A battery module, according to one embodiment of the present invention, comprises: at least one battery cell; a module case for receiving the battery cell; a relay unit provided to the module case and electrically connected to the at least one battery cell; and a shunt unit provided on the outer side of the module c...

A power storage device, according to one embodiment of the present invention, comprises: a rack container having a predetermined accommodation space; a plurality of battery racks which are disposed in the rack container and have a coolant tank including a predetermined refrigerant; and at least one flow supplementin...

One aspect of the present invention comprises: a porous polymer substrate; and a porous coating layer, wherein the porous coating layer includes P(VDF-TrFE-CTFE) and PVDF-CTFE as binder polymers. By changing the characteristics of binder polymers by means of aforesaid feature, it is possible to provide a separator h...

Disclosed is a battery module having reduced risk of secondary ignition or explosion and improved cooling efficiency. To achieve the above purpose, the battery module according to the present invention comprises: a cell assembly including a plurality of secondary batteries stacked with one another in the front and r...

Disclosed is a battery module having a reduced risk of ignition or explosion and enhanced durability against external impacts. In order to achieve the above-described objective, the battery module according to the present invention comprises: a plurality of secondary batteries arranged in two rows in the front and r...

The present invention relates to a battery pack having a movable busbar assembly, and a secondary battery comprising same, and, more specifically, to a battery pack having a movable busbar assembly, and a secondary battery comprising same, the movable busbar assembly enabling, in a side plate direction of a pack cas...

The present invention pertains to: a carbon nanotube having a specific surface area of 100 m2/g to 196 m2/g and having an La(100) of less than 7.0 nm as measured by XRD; an electrode including the carbon nanotube; and a secondary battery.

A battery management apparatus according to an embodiment of the present invention may comprise: a battery control unit for receiving an operation state of a detected motor and detecting a charged state of a battery; and a condition control unit for adjusting an operation condition of the battery control unit by app...

The present invention relates to: an electrolyte for a lithium secondary battery, the electrolyte comprising a lithium salt, an organic solvent, and an additive which includes a compound represented by chemical formula 1; and a lithium secondary battery including same.

Disclosed are an exterior material for a secondary battery, and a method and device for manufacturing an exterior material for a secondary battery. Provided according to an aspect of the present invention is a method for manufacturing an exterior material for a secondary battery, the method comprising: a first step ...

The present invention relates to a cylindrical secondary battery in which the shapes of a first gasket and a second gasket are changed to secure the sealing and insulating characteristics of the cylindrical secondary battery, and in particular, to a cylindrical secondary battery comprising: a cylindrical can for acc...

A battery module according to an embodiment of the present invention comprises: a battery cell stack comprising a plurality of battery cells stacked on each other; and a heat sink placed on one side of the battery cell stack, wherein the heat sink comprises a cooling pipe, at least one rupture part, and a sealing ma...

The present invention provides a lithium secondary battery comprising: a positive electrode comprising aluminum-doped bimodal lithium cobalt oxide which comprises a first lithium cobalt oxide and a second lithium cobalt oxide having different average particle sizes (D50) from each other; a negative electrode compris...

The present invention relates to a cylindrical battery in which an electrode assembly is embedded in a metal can, the cylindrical battery including a gas discharge member provided in a safety vent positioned on the upper end of the electrode assembly.

The present invention provides an electrolyte for a lithium secondary battery, and a lithium secondary battery comprising same, the electrolyte comprising: an additive comprising a compound represented by chemical formula 1; an oligomer comprising a unit represented by chemical formula 2 and including an acrylate gr...

Provided are a device, method, and battery pack for determining the degree of degradation of a battery. The device generates first sensing information indicating the voltage and current of the battery while the battery is being charged with a first constant current. The device generates second sensing information in...

The present invention provides an anode active material for a lithium secondary battery, and a preparation method therefor, the anode active material comprising a silicon-silicon oxide-magnesium silicate composite, which comprises a silicon oxide (SiO x, 0

The present invention relates to an electrochemical device comprising a separation membrane having a dotted line, and a short circuit inducing member, and a method capable of evaluating safety under internal short circuit conditions by using the electrochemical device. When using the electrochemical device of the pr...

The present invention relates to a press jig comprising: a pair of plate-shaped members that include a plurality of independently formed protrusions spaced apart from each other on a surface that comes into contact with the secondary battery when pressed; and a heating unit that heats the protrusions formed on the p...

The present invention relates to electrolyte for a lithium secondary battery, and a lithium secondary battery comprising same, the electrolyte comprising lithium salt, a first additive, a second additive, and an organic solvent, wherein the first additive comprises a compound expressed by chemical formula 1 and the ...

The present invention relates to a lithium secondary battery, comprising: a cathode comprising a lithium nickel cobalt manganese-based oxide as a cathode active material; an anode comprising a carbon-based anode active material; a separator interposed between the anode and the cathode; and a nonaqueous electrolyte s...

The present invention provides a secondary battery having a novel structure in which unit cells which become thinner in one direction are radially assembled, and a device comprising same, and when a collector having a through-hole in the thickness direction is to be applied, the variation range of the concentration ...

An aspect of the present invention may provide a battery module that enables intuitive identification of a swelling amount of battery cells received in a module housing, the battery module comprising: a cell pressing plate received in the module housing and disposed to face at least one side among opposite lengthwis...

A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells is stacked; a module frame in which the battery cell stack is accommodated and of which the top is open; and an upper plate covering the battery cell stack on the open module fr...

The present invention relates to a device for setting a power limit value of a battery bank having a plurality of battery racks connected in parallel, and comprises a battery bank control device comprising: a voltage measurement unit for measuring the voltage of each of a plurality of battery racks; a first power li...

The present invention relates to a slot-die coating apparatus for coating an electrode active material slurry on an electrode current collector, the apparatus comprising: a coating roller; a die comprising a lower discharge part through which a first electrode active material slurry is discharged; and an upper die p...

The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery comprising same, the electrolyte comprising: a lithium salt having a molar concentration of 1.5-2.0 M; an oligomer comprising a unit represented by chemical formula 1 and containing an acrylate group at an...

A bus bar module according to one embodiment of the present invention comprises: a bus bar including a lower plate and an upper plate superimposed on the lower plate; an electrode lead positioned between the upper plate and the lower plate; and connection parts disposed between the upper plate and the electrode lead...

The present invention provides an electrolyte for a lithium secondary battery, and a lithium secondary battery comprising same, the electrolyte comprising: lithium salt; an organic solvent; and at least one cyanosilane-based compound selected from the group consisting of a compound represented by chemical formula 1 ...

A battery module according to one embodiment of the present invention comprises: a plurality of battery cells; and a bus bar which electrically connects the plurality of battery cells, wherein the bus bar comprises: a bus bar body; and a safety portion inserted into a part of the bus bar body and surrounded by the b...

The present invention relates to a lamination apparatus for bonding an electrode assembly including an electrode and a separator, comprising: a transfer part for transferring an electrode assembly; a heating roller part for heating the electrode assembly transferred by the transfer part; and a rolling roller for rol...

The present invention includes a battery current measuring device comprising: a switching element for controlling the charging/discharging of a battery; an A/D converter for converting the voltages at both ends of the switching element to digital values; a temperature compensation unit comprising a diode structure c...

The present invention relates to a method for evaluating resistance welding quality of a battery by using eddy current signal characteristics, wherein high reliability can be provided by preventing an error caused by a variation according to differences in physical properties of individual batteries, and an evaluati...

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery, comprising: an organic solvent; a lithium salt; and a compound represented by the following chemical formula 1, and to a lithium secondary battery comprising same.

The present invention relates to: a non-aqueous electrolytic solution additive for a lithium secondary battery which forms a stable film on the surface of a positive electrode, and thus is able to suppress the elution of a transition metal; a non-aqueous electrolytic solution for a lithium secondary battery comprisi...

A battery module according to an embodiment of the present invention is characterized by comprising: a plurality of battery cell assemblies including a plurality of battery cells stacked on each other; and at least one cooling unit which is provided between the plurality of battery cell assemblies and of which the i...

A battery module according to one embodiment of the present invention comprises: a first battery cell and a second battery cell, each of which includes an anode lead and a cathode lead, and which are interconnected in series; a short circuit induction member of which one side in a lengthwise direction is disposed be...

A solid electrolyte membrane according to the present invention has an ion conduction-blocking layer, which is formed in the electrolyte membrane by means of a polymer material having low ionic conductivity through polymer phase separation under high-temperature conditions such as when the temperature inside a batte...

Disclosed is a battery pack exhibiting enhanced weldability between connection plates of a plurality of battery modules. In order to attain the purpose, a battery pack according to the present invention comprises a plurality of battery modules arrayed in a forward-backward direction, wherein each of the plurality of...

The present invention provides a battery module and a battery pack, which are improved in durability. In order to achieve the purpose described above, the battery module according to the present invention comprises: multiple cylindrical battery cells, each of which has an electrode terminal; a module case having a r...

Provided is a method for recovering and reusing an active material from a positive electrode scrap. A method for reusing a positive electrode active material according to the present invention includes: (a) a step in which a positive electrode scrap including a lithium cobalt oxide positive electrode active material...

A secondary battery of the present invention has a structure in which a first electrode sheet and a second electrode sheet are stacked and wound while a separation sheet is interposed therebetween, and comprises: an electrode assembly in which a first electrode tap protrudes from the first electrode sheet and a seco...

A separator for an electrochemical device according to the present invention has a low content of secondary particles that are inorganic particles aggregated in an inorganic coating layer. In particular, the amount of secondary particles protruding above a predetermined height toward the surface of the separator is ...

A secondary battery according to an embodiment of the present invention comprises: an electrode assembly having a jelly-roll structure and comprising a cathode sheet, an anode sheet, and a separator; a cylindrical case in which the electrode assembly is contained; and a flat spiral spring placed between the outer ci...

The present invention relates to a big data-based battery inspection method. Specifically, the present invention is for providing a big data-based battery inspection method which applies information on a metal part of a battery measured by an eddy current sensor to a discrimination function so as to quickly inspect ...

Disclosed in the present invention is a vehicle battery pack that is configured to enable smooth communication or power connection with a vehicle when mounted on an electric vehicle. A battery pack according to one aspect of the present invention is a battery pack that has a vehicle control unit, an auxiliary batter...

A relay control device according to an embodiment of the present invention comprises: a relay which is disposed in a main path between a battery cell and a pack terminal and is configured to connect or disconnect the main path according to an operation state; and a comparator configured to receive a comparison volta...

According to the present invention, a device for sensing swelling of a battery module comprises: a swelling sensing panel having an edge in contact with the inner surface of a battery module housing; a slant part protruding from the inner surface of the battery module housing and having a slanted surface extending f...

According to the present invention, a method for manufacturing an electrode assembly in which an anode, a separator and a cathode are repeatedly stacked, comprises: a unit cell manufacturing step (S10) of manufacturing a unit cell having a predetermined stacked structure of an anode, a separator and a cathode; a fil...

The present invention relates to a method for manufacturing an electrode assembly, the method comprising the steps of: (a) transferring a plurality of base unit bodies from a first set position to a second set position one by one; (b) measuring a distance between a full width dismal end which is a dismal end of a fi...

A battery module according to the present invention comprises: a plurality of battery cells having an electrode terminal formed thereon; a module housing having an inner space for accommodating the plurality of battery cells; and a module bus bar for electrically connecting the plurality of battery cells. The module...

Provided is a method for reusing an active material by recovering the active material from a cathode scrap. A method for reusing a cathode active material according to the present invention comprises the steps of: (a) thermally treating a cathode scrap including a lithium composite transition metal oxide cathode act...

A secondary battery according to an embodiment of the present invention comprises a cathode in which a cathode material is coated on a cathode current collector, the cathode material including an irreversible additive and a cathode active material, wherein the irreversible additive contains lithium nickel oxide (LNO...

A manufacturing method of the present invention is a method for manufacturing an electrode assembly comprising anodes, separators, and cathodes which are repeatedly stacked, the method comprising: a unit cell manufacturing step (S10) for manufacturing unit cells, each of which has a predetermined stack structure of ...

A battery module according to one embodiment of the present invention comprises: battery cells; a module case for accommodating the battery cells; and a bus bar assembly electrically connected to electrode leads of the battery cells, wherein the bus bar assembly comprises: a bus bar frame arranged on at least one si...

The present invention relates to a method for preparing a pouch-type battery case comprising the steps of: (a) positioning a laminate sheet for a pouch-type battery case on a lower mold; (b) molding an electrode assembly storing part by pressing the laminate sheet by means of an upper mold; (c) molding a venting gui...

A battery module according to an embodiment of the present invention comprises: a battery cell stack comprising a plurality of battery cells stacked together; a first frame covering the bottom of the battery cell stack; and a second frame covering the top of the battery cell stack, wherein: the first frame includes ...

According to one embodiment of the present invention, a secondary battery comprises: a jelly-roll type electrode assembly immersed in a liquid electrolyte; a battery case accommodating the electrode assembly and the liquid electrolyte therein; a cap assembly joined to an upper portion of the battery case; and a refe...

The present invention relates to a battery module intended to prevent heat transfer between cell module assemblies in the battery module. The battery module comprises a plurality of cell module assemblies and module plates, wherein the cell module assemblies include a plurality of battery cells and individual housin...

The present invention relates to an electrolyte for a lithium metal secondary battery. When applied to a secondary battery including a lithium metal as an anode active material, the electrolyte of the present invention can reduce a side reaction, and shows excellent stability, thus improving life span characteristic...

A battery pack according to an embodiment of the present invention comprises: a plurality of battery modules, each comprising a battery cell stack which comprises a plurality of battery cells stacked together and a module frame in which the battery cell stack is received; a pack frame in which the plurality of batte...

The present invention provides a method for diagnosing the degradation of an electrode active material for a secondary battery, the method comprising the steps of: manufacturing a lithium secondary battery including a cathode and an anode present to face the cathode, the cathode comprising a cathode active material ...

The present invention relates to an electrode assembly and a secondary battery comprising same. The electrode assembly according to the present invention is an electrode assembly in which a positive electrode, a separator, and a negative electrode are alternately laminated and wound, wherein: the positive electrode ...

Provided is a method for quantitative analysis of a carbon-based hybrid anode, wherein the method comprises the steps of: preparing a secondary battery having a carbon-based hybrid anode including a carbon-based anode active material and a non-carbon-based anode active material; measuring, by using an X-ray diffract...

A method for manufacturing an electrode lead, according to an embodiment of the present invention for addressing an issue, comprises the steps of: manufacturing a first electrode lead and a second electrode lead, respectively; and forming a connection part by adhering the first electrode lead and the second electrod...

The present invention relates to an anode and a secondary battery comprising the anode, wherein: the anode comprises a current collector and an anode active material layer disposed on the current collector; the anode active material layer comprises a conductor, an anode active material, and a binder; the anode activ...

The present invention relates to an electrode assembly in which a first electrode and a second electrode are wound in a jelly-roll shape in a state in which a separator is interposed therebetween, the electrode assembly comprising: a first electrode including a first winding start part provided at a winding start po...

A battery module according to an embodiment of the present invention comprises: battery cells; a module case accommodating the battery cells; and a bus bar assembly electrically connected to electrode leads of the battery cells, wherein the bus bar assembly comprises: a bus bar frame arranged on at least one side of...

Provided is a method for predicting the lifespan characteristic of a secondary battery including a carbon-based hybrid anode, the method comprising the steps of: during charging and discharging of a target secondary battery including a target carbon-based hybrid anode including a carbon-based anode active material a...

A battery pack according to an embodiment of the present invention comprises: a module stack structure in which a plurality of battery modules are stacked; a pack housing including a lower housing supporting the module stack structure from a lower portion and an upper housing coupled to the lower housing from an upp...

A battery pack according to an embodiment of the present invention comprises: a pack case; a plurality of battery modules each accommodated in the pack case and comprising a plurality of battery cells stacked on each other therein; at least one partitioning heat insulating member arranged to partition the plurality ...

A battery module according to an embodiment of the present invention comprises: a battery cell stack which is a stack of a plurality of battery cells; and a module frame for accommodating the battery cell stack. A venting part is formed on the lower surface of the module frame. The battery cell comprises: a cell bod...

A press roll device according to the present invention passes a unit cell between an upper roll and a lower roll. The press roll device is characterized by comprising: the lower roll; the upper roll; a lower mount which is immobilized and to which the lower roll is mounted; an upper mount which is restrained by a br...

A battery module, according to one embodiment of the present invention, is characterized by comprising: a plurality of battery cells layered on one another; and a plurality of adhesive members which are arranged between the plurality of battery cells and which can be removed by a user.

The present invention relates to an electrode assembly comprising a coated part coated with an electrode active material, and an electrode having an electrode tab without an electrode active material, wherein the electrode includes a crack diffusion prevention part, and the crack diffusion prevention part includes a...

The present invention relates to a non-aqueous electrolyte solution to which a Lewis base compound is added. The non-aqueous electrolyte solution can maintain the passivation ability of an SEI film when stored at high temperatures, by scavenging HF and PF5, which are formed as decomposition products of a lithium sal...

Disclosed in the present invention is a battery pack which reduces the number of components and increases energy density and manufacturing efficiency. The battery pack according to the present invention for achieving the above purpose comprises: a plurality of battery cells in the form of being elongated in a vertic...

A relay control device and method according to one embodiment of the present invention can maintain relays in a closed state even if a processor is reset due to the occurrence of a system error. Therefore, the relay control device and method according to the one embodiment of the present invention maintain the opera...

The present invention relates to a silicon-carbon composite negative electrode active material, an negative electrode comprising same, and a secondary battery, the silicon-carbon composite negative electrode active material comprising: a core comprising SiOX(0=X<2); a carbon layer covering at least a portion of the ...

A battery cell, according to one embodiment of the present invention, comprises: an electrode assembly including an anode, a cathode, and a separator; and a pouch case having a depression in which the electrode assembly is accommodated, wherein the pouch case is bent on the basis of the corner line of at least one o...

The present invention relates to a lithium secondary battery activation method, comprising: a first step of preparing a secondary battery that includes a positive electrode including a sacrificial positive electrode material represented by chemical formula 1 and having a rhombic structure, a negative electrode, a se...

The present invention relates to an electrode comprising: an electrode active material sheet including an electrode active material and a binder polymer; and a current collector including a mesh structure body, wherein at least a part of the mesh structure body is inserted into the electrode active material sheet, a...

The present invention relates to an dry quality evaluation device for an electrode comprising: an oven for providing a space in which an electrode is dried; a measurement unit which is positioned at the outlet of the oven, and which measures the color coordinate value of an electrode active material layer for the dr...

The present invention relates to an electrode drying device and an electrode drying method, the electrode drying device comprising: an oven which provides a space where an electrode is dried and includes a hot air nozzle or an infrared heater; a color coordinate measurement unit which is disposed at the outlet of th...

The present invention relates to a secondary battery pressurization device comprising: an arrangement member on which a secondary battery including an electrode assembly and a pouch is disposed; and a pressurization member which pressurizes the secondary battery disposed on the arrangement member, wherein the pressu...

The present invention relates to a secondary battery rolling apparatus for correcting the external shape of a secondary battery, the apparatus comprising: a jig member having a bottom plate and at least one correction mold which is disposed on the upper surface of the bottom plate and into which the secondary batter...

A method for manufacturing an electrode assembly according to an embodiment of the present invention for solving the problem comprises the steps of: manufacturing a positive electrode by coating a positive electrode active material on at least a portion of a positive electrode collector formed by laminating a first ...

The present invention relates to an electrode assembly comprising a positive electrode, a negative electrode, and a separator interposed between the positive electrode and negative electrode. The positive electrode comprises a positive electrode active material layer formed on a positive electrode current collector....

A sub pack according to an embodiment of the present invention comprises: a battery module assembly comprising multiple unit modules; and a BMS assembly coupled to one lengthwise side of the battery module assembly. The battery module assembly comprises: a first sub module including multiple unit modules connected a...

The present invention relates to a battery charging/discharging system which includes a cooling unit enabling uniform flow rate distribution so that temperature differences between a plurality of battery cells can be minimized during the charging and discharging of the plurality of battery cells. The battery chargin...

The present invention pertains to a negative electrode and a secondary battery including same. The negative electrode includes a negative electrode current collector, a first negative electrode active material layer disposed on the negative electrode current collector, and a second negative electrode active material...

The present invention relates to a battery module provided with a rail-type socket and a battery pack comprising same and, more specifically, to a battery module and a battery pack comprising same, the battery module comprising a plurality of first battery cell assemblies that are connected in series and in which tw...

Disclosed is a battery module having enhanced manufacturing efficiency and cooling efficiency. To achieve the above-described objective, the battery module according to the present invention comprises: a plurality of secondary batteries; and a cooling member configured to load the plurality of secondary batteries, w...

To solve the problem, an electrode according to an embodiment of the present invention comprises: an active material coating portion in which an electrode active material is coated on at least one surface of an electrode current collector; and an active material non-coating portion that is formed at one side of the ...

Disclosed are a pouch-type secondary battery and a battery module. According to one aspect of the present invention for achieving the objective, provided is a pouch-type secondary battery comprising an exterior material which includes: an accommodating portion having a space for accommodating an electrode assembly; ...

An electrode assembly manufacturing method according to an embodiment of the present invention to solve the above problem comprises the steps of: manufacturing an electrode by applying an electrode active material to at least a part of an electrode current collector formed by sequentially laminating a first electrod...

The present invention relates to a pouch-type case molding apparatus having no dent or corrugation on a pouch folding part, a pouch-type case manufacturing method using same, and a pouch-type case manufactured by means of the molding apparatus, the pouch-type case having a terrace step.

The present invention relates to a system and method for battery diagnosis according to altitude using an atmospheric pressure sensor, wherein the system and method differently set diagnostic levels and algorithms according to altitudes, and diagnose the state of a battery pack on the basis of a diagnostic algorithm...

A battery module according to one embodiment of the present invention comprises: a battery cell stack including one or more battery cells, each having electrode leads; a module frame for accommodating the battery cell stack; and a flame retardant cap sheet arranged between the battery cell stack and the module frame...

The battery module according to one embodiment of the present invention comprises: a battery cell stack formed by stacking a plurality of battery cells; and barrier layers interposed between neighboring battery cells among the plurality of battery cells, wherein the barrier layers comprise body parts parallel to the...

A battery module according to an embodiment of the present invention comprises: a battery cell stack comprising one or more battery cells; and a module frame in which the battery cell stack is accommodated, wherein at least one surface of the module frame includes a pattern structure comprising repeating patterns of...

The battery module according to one embodiment of the present invention comprises a battery cell stack formed by stacking a plurality of battery cells, and barrier layers interposed between neighboring battery cells from among the plurality of battery cells, wherein the thickness of the barrier layers are different ...

The present invention relates to a separator for a lithium secondary battery, the separator comprising: a separator substrate formed of a porous polymer resin; and a heat-resistant layer added to at least one side of the separator substrate and containing a phenol resin undergoing a curing reaction when heated, wher...

The present invention relates to a negative electrode, comprising a negative electrode current collector; and a negative electrode active material layer disposed on the negative electrode current collector and including a negative electrode active material, wherein the negative electrode active material includes nat...

The present invention relates to a battery cell comprising a separator in which a perforated line and magnetic bodies adjacent to the perforated line are formed, and a method for evaluating battery cell safety by using same, wherein the battery cell can induce an internal short circuit without physical deformation o...

A battery rack according to an embodiment of the present invention comprises: a plurality of battery modules; a rack case for accommodating the plurality of battery modules; a coolant tank provided on the upper side of the rack case and provided with a predetermined refrigerant; a pipe unit connecting the coolant ta...

The present invention relates to automatically allocating an ID to a battery module. The present invention comprises: battery modules inserted into a battery module mounting unit formed in at least one battery rack; and a higher-level BMS in wireless communication with the battery modules. The battery modules each c...

A secondary battery, a method for manufacturing the secondary battery, and a battery pack comprising the secondary battery are provided. According to the present invention, a secondary battery having a curved surface can be manufactured without a separate pressing step for forming a curved surface. ...

Disclosed in the present invention is a battery pack with improved ease of use and durability. The battery pack according to the present invention for achieving the above objective comprises: a battery module having a plurality of secondary batteries; and a pack housing having an outer wall configured to form an inn...

Disclosed are an electrode for a secondary battery and a method for manufacturing the electrode. According to an aspect of the present invention, a first cut line and second cut line for cutting an electrode sheet intersect each other to form an intersection region on the electrode sheet. In the intersection region,...

The present invention relates to an electrode sheet comprising: a first cathode mixture layer which is formed in a central portion of a holding part and contains a first cathode active material of lithium nickel cobalt manganese oxide; and a second cathode mixture layer which is formed at one end or both ends of the...

In the present invention, a slurry for a second cathode mixture is applied to both edge regions of an electrode sheet holing portion during storage of an electrode sheet having a high content of nickel, wherein the edge regions are vulnerable to moisture penetration and high in rolling reduction ratio and the slurry...

Provided is a method for determining the degree of wetting of a lithium ion battery cell by using a low current test. The wetting degree determination method according to the present invention comprises the steps of: a) acquiring, as a reference charging profile, a charging profile obtained by making a record while ...

The present invention relates to a battery module and a method for manufacturing a heat dissipating member, the battery module comprising: a battery cell stack in which a plurality of pouch-type battery cells are stacked; a battery module housing for accommodating the battery cell stack; and the heat dissipating mem...

The present invention relates to an electrode capable of preventing detachment of an active material during a notching process and a process of using the electrode, and to a method for manufacturing same, wherein the electrode has a structure in which an electrode active material layer is formed on a current collect...

A secondary battery according to one embodiment of the present invention comprises: a current interrupt device (CID); a safety vent positioned on the current interrupt device and electrically connected to the current interrupt device; and a CID gasket for encompassing the edges of the current interrupt device, where...

According to the present embodiment, provided are a positive electrode for a lithium secondary battery and a lithium secondary battery comprising same, the positive electrode comprising: a positive electrode current collector; a primer coating layer formed on the positive electrode current collector; and a positive ...

A degassing apparatus for a pouch that comprises a body part, on which an electrode assembly is mounted, and into which an electrolyte is injected, and a gas pocket part extending from the body part to one side, according to the present invention comprises: a lower mold placed on a bottom surface of the body pa...

The present invention relates to a facility for manufacturing a secondary battery comprising: a separation sheet supply device configured to supply two separation sheets 5 to be disposed vertically; an electrode supply device configured to supply electrodes to be disposed between the two separation sheets and o...

The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed ...

APPARATUS FOR RECOVERING ACTIVE MATERIAL AND METHOD FOR REUSING ACTIVE MATERIAL BY USING SAME. An active material recovery apparatus capable of easily recovering an electrode 5 active material from an electrode scrap in its intrinsic shape and a positive electrode active material reuse method using the active ...

The present disclosure relates to a method for manufacturing a secondary battery including a gel polymer electrolyte and a secondary battery obtained thereby. The method can inhibit thermal crosslinking of a gel polymer electrolyte during the wetting 5 with an electrolyte, and facilitate thermal crosslinking afte...

ACTIVATION PROTOCOL GENERATING METHOD, AND ACTIVATION METHOD AND DEVICE USING SAME. Provided is a method of generating a charge/discharge protocol of an additional charging/discharging operation included in an activation method, the activation method including a jig formation operation, an aging operation, a...

DIE COATER AND INSPECTION DEVICE THEREFOR. A device for inspecting a die coater including a first die, a second die, and a shim formed between the first die and the second die according to an embodiment of the present invention for solving the above problem includes a rail formed to be fixed long on one sur...

The present invention relates to a pouch-type battery case comprising a pouch film laminate including a sealant layer, a gas barrier layer, and a surface protective layer. The sealant layer is formed of a first polymer and is formed on the innermost layer, and the surface protective layer is formed of a second polym...

The present technology relates to a positive electrode for a lithium secondary battery, and the positive electrode includes: a first positive electrode mixture layer contacting a positive electrode current collector; and at least one second positive electrode mixture layer arranged on the first positive electrode...

A sacrificial positive electrode material, a positive electrode comprising the same, and a lithium 5 secondary battery having the positive electrode are disclosed herein. In some embodiments, a sacrificial positive electrode material includes a lithium cobalt oxide represented by the following Chemical Formula 1,...

The present invention relates to a negative electrode whose rapid charging performance and lifetime characteristics are excellent and a secondary battery including the negative electrode, and specifically, to a negative electrode, which 5 includes a current collector and a negative electrode active material layer...

The present invention relates to a method for evaluating the quality of an electrode, which, by measuring the color coordinates of electrodes before roll-pressing, can simply and rapidly detect defective electrodes and, in particular, to a method for evaluating the quality of an electrode, the method comprising the ...

Provided is a secondary battery which includes: one or more positive electrodes including a positive electrode active material layer; a plurality of negative electrodes including a first negative electrode including a silicon-based active material and a 5 second negative electrode including a carbon-based active ...

The present invention relates to an electrode slurry coating device and method and comprises: a coater that coats a metal foil with an electrode slurry; a residual oil level measuring unit that measures a residual oil level on the surface of the metal foil before electrode slurry coating; and a control unit that det...

The non-aqueous electrolyte solution of claim 1, wherein the organic solvent includes one or a combination of two or more selected from the group consisting of a carbonate compound, an ether compound, an ester compound, a ketone compound, and an alcohol 5 compound.

The present invention relates to a sacrificial anode material having reduced gas generation, and a preparation method therefor, and the method for preparing the sacrificial anode material allows a material mixture to be fired at a humidity, satisfying a specific range, in an inert gas atmosphere containing a small a...

The present technology relates to a positive electrode for a lithium secondary battery 5 and a lithium secondary battery including the positive electrode. The positive electrode includes: a safety function layer arranged on a positive electrode current collector; and a positive electrode mixture layer arranged on...

The present invention relates to: a negative electrode active material which includes silicon-based composite particles comprising SiOx (0

The apparatus for preparing a cell according to an embodiment of the present invention includes an electrode reel from which an electrode sheet, which is to be a plurality of electrodes, is unwound, a separator reel from which a separator sheet, which is stacked with the electrode while covering the electrode b...

An apparatus for manufacturing a unit cell, according to an embodiment of the present invention, comprises: a central electrode reel from which a central electrode sheet having a plurality of central electrodes is unwound; a separator reel from which a separator sheet stacked with the central electrodes is unwound; ...

The apparatus for preparing a unit cell according to an embodiment of the present invention includes a lower separator reel from which a lower separator sheet is unwound, a first nozzle for applying an adhesive to at least a portion of one surface facing upward of the unwound lower separator sheet, an upper sep...

The present invention relates to a battery module having a fire extinguishing unit including an extinguishing material and, more specifically, to a battery module having a fire extinguishing unit including an extinguishing material, the battery module comprising: a plurality of battery cells (100) laminated vertical...

A battery module, according to one embodiment of the present invention, comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame which accommodates the battery cell stack; a first bus bar frame which is accommodated in the module frame and covers a front surface of the batter...

According to one embodiment of the present disclosure, a free-standing film for dry electrode, comprising: a binder, an active material and a conductive material, wherein the free-standing film has a tensile strength of 2000 gf/cm2 or more based on a 10 thickness of 200㎛. [fig-1.]

The present invention relates to: a negative electrode including a first negative electrode active material and a second negative electrode active material, wherein the first negative electrode active material includes ethylene carbonate; a method for manufacturing the negative electrode; a secondary battery; and a ...

The present invention relates to an electrode sheet cutting apparatus including an upper cutter and a lower cutter configured to apply force to opposite surfaces of an electrode sheet while moving at the same speed, wherein the electrode sheet is cut from one side to the other side, whereby deformation of the e...

There is provided a method for collecting and reusing an active material from 5 positive electrode scrap. The positive electrode active material reuse method of the present disclosure includes (a) thermally treating positive electrode scrap comprising a lithium composite transition metal oxide positive electrode ...

Provided are a free standing film, a manufacturing method thereof, a dry electrode comprising same, and a secondary battery. The free standing film for a dry electrode according to an embodiment of the present invention comprises: an active material; a binder comprising fiberized polymer; and a carrier, wherein the ...

The present invention relates to an anode for an all-solid-state battery and an all-solid-state battery including same, the anode enabling provision of an all-solid-state battery having superb properties of contact between an anode and a solid electrolyte, as well as improved lifespan properties. ...

The present invention relates to a method for manufacturing a separator-integrated electrode having inorganic layers with a multilayer structure, and a separator-integrated electrode manufactured thereby, and provides a method for manufacturing a separator-integrated electrode, and a separator-integrated electrode m...

A battery module according to an embodiment of the present invention comprises: at least one battery cell; a module case for receiving the at least one battery cell; an extinguishing unit, at least a part of which is disposed in the module case and which directly sprays a fire-extinguishing agent into the module cas...

The present invention relates to a method for manufacturing a secondary battery having improved resistance, in which an electrode is manufactured using an electrode slurry comprising succinonitrile, and by which, compared to the prior art, an effect is achieved of, in a process for laminating the electrode with a se...

A battery management device, a battery management method, and a battery pack are provided. Using a plurality of input data sets associated with external parameters observable outside a battery cell and a plurality of desired data sets associated with internal parameters not observable outside the battery cell, the b...

The present invention relates to a heat sink which is coupled to a pack tray having a plurality of secondary batteries mounted thereon, and which has an inlet and an outlet so that a coolant flows in and out of an internal chamber, the heat sink comprising dimples that convexly protrude toward the inside of the cham...

The present invention relates to a method and system for evaluating insulation and lithium ion conductivity characteristics of a separator for an electrochemical device, in which insulation and lithium ion conductivity characteristics are evaluated while a separator-containing measurement object to be tested and an ...

The present invention relates to a device for bending a battery cell flexible printed circuit board and a bending method using same and, more specifically, to a bending device for a battery cell flexible printed circuit board and a bending method using same, the bending device comprising: a die (300) including a sup...

The present invention relates to a battery management system and a battery pack, and a battery management system according to one embodiment of the present invention comprises: a pack voltage sampling unit for periodically sampling the pack voltage of a battery pack; a pack current sampling unit for sampling the pac...

A battery module according to an embodiment of the present invention comprises: battery cells; a module case for accommodating the battery cells and having an inner cooling flow path on both sides of the battery cells; venting openings provided on both lateral surfaces of the module case; sheet members which are mou...

A secondary battery according to an embodiment of the present invention comprises: a jelly-roll electrode assembly in which a first electrode sheet, a second electrode sheet, and a separator provided between the first electrode sheet and the second electrode sheet are wound together; and a first electrode tab bonded...

A battery case for a secondary battery according to an embodiment of the present invention for solving the problem comprises: a cup part provided with an accommodation space which accommodates an electrode assembly formed by stacking an electrode and a separator; a sealing part formed to extend outward from the cup ...

The present invention provides a battery module which has enhanced energy density and cooling efficiency. The battery module according to the present invention for achieving the purpose described above comprises: a plurality of cylindrical battery cells horizontally arranged and electrically connected with one anoth...

The present invention relates to a cylindrical battery in which an electrode assembly is embedded in a battery case, a top cap is mounted on the upper side of the electrode assembly, the top cap and the electrode assembly are electrically connected by a positive pole tab, and the positive pole tab includes an extens...

The present invention relates to a secondary battery. The secondary battery may comprise: an electrode assembly; a battery case in which the electrode assembly is received; a first electrolyte which is received in the battery case and with which the electrode assembly is primarily impregnated; and a reinforcement el...

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. Particularly, the aim of the present invention is to provide a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery having improved high-rate ...

A battery pack according to the present invention can comprise: a plurality of battery modules having a plurality of battery cells and a module housing for accommodating the plurality of battery cells; a heat insulating material interposed between two battery modules facing each other among the plurality of battery ...

The present invention relates to a high-voltage battery module, which introduces a bridge bus bar exposed to the outside so as to reduce the risk of accident caused by an electric shock when handling the high-voltage battery module, thereby connecting a cell assembly only when used after electrically and temporarily...

A welding failure inspection method of the present invention comprises: a threshold resistance setting step (S100) of measuring the resistance of a welding part in a sample group so as to derive a threshold resistance value, which becomes the determination criterion of weak welding; a resistance measurement step (S2...

The present invention relates to a battery module with an improved battery cell stacking method, and a battery pack comprising same. By alternately stacking a second cell assembly and a first cell assembly, having a plurality of battery cells connected in a single layer, space efficiency in the battery module and th...

The present invention relates to a method for manufacturing a second battery, comprising the steps of: (a) alternately stacking an electrode and a separation membrane so as to manufacture an electrode assembly; (b) laminating the electrode assembly at a pressure of 5kgf/? or more so as to bond the electrode and the ...

The present invention relates to a device and method for updating a current pattern for rapid charging, and a computer program, stored in a storage medium, for performing same. The device for updating a current pattern for rapid charging comprises: a resistance calculation unit for calculating the internal resistanc...

A battery module according to an embodiment of the present invention comprises: a module frame having inserted therein a battery cell stack which is a stack of a plurality of battery cells; end plates covering the front and rear surfaces of the battery cell stack and coupled to the module frame; and a cell terrace a...

Disclosed in the present invention is a battery module with improved safety against fire or explosions. A battery module for achieving the above objective, according to the present invention, comprises: at least one cell assembly including a plurality of secondary batteries; a gas pipe configured to move gas generat...

A battery pack according to the present invention comprises: a battery module which comprises multiple secondary batteries and a module case having an outer wall configured to form an inner space for receiving the multiple secondary batteries; and a pack housing which comprises an intermediate housing having an oute...

The present invention relates to a cylindrical battery comprising electrode assemblies and top cap assemblies positioned on the electrode assemblies, wherein the top cap assemblies are electrically separated from each other by means of an insulating member.

A battery module according to an embodiment of the present invention comprises: battery cells stacked together; a module case for accommodating the battery cells; a thermal resin for filling so as to at least partially cover electrode lead portions of the battery cells within the module case; a laser sensor, provide...

The present invention relates to a non-aqueous electrolyte capable of implementing excellent lifespan characteristics when applied to a high-voltage battery and to a lithium secondary battery comprising same. The non-aqueous electrolyte of the present invention comprises an organic solvent, a lithium salt, a compoun...

Proposed is a method for manufacturing a globular carbon-based anode active material, the method comprising the steps of: mixing a flake graphite, a solid pitch, and a liquid pitch, followed by globularization to prepare globular raw particles; firing the globular raw particles; carbon-coating the resultant fired pa...

A method for manufacturing a battery cell for evaluating lithium precipitation behavior according to the present invention comprises: an electrode assembly manufacturing step (S10) for manufacturing an electrode assembly having an overhang region in which a positive electrode protrudes from a negative electrode; a b...

The present invention relates to an electrode drying method and system which can suppress swelling of binder components in the process of drying an electrode, and can improve the adhesive strength between an electrode mixture layer and an electrode current collector.

Disclosed is a battery module having improved safety against fire or thermal runaway. A battery module according to the present invention to achieve the above purpose comprises: a cell assembly including at least two battery cells; a module housing having an internal space for accommodating the cell assembly and a c...

A battery module according to one embodiment of the present invention comprises: battery cells stacked on one another; a module case for accommodating the battery cells; a thermal resin filled in the module case so as to at least partially cover electrode lead parts of the battery cells; a temperature sensor provide...

The present invention provides a battery system comprising: at least one secondary battery including a negative electrode including a silicon-based active material, a positive electrode facing the negative electrode, a separator disposed between the negative electrode and the positive electrode, and an electrolyte; ...

The present invention provides a method for manufacturing a secondary battery, comprising the steps of: forming an electrode assembly including an anode having a silicon-based active material, a cathode facing the anode, and a separator interposed between the anode and the cathode; injecting an electrolyte into the ...

The present invention relates to a pouch type battery cell and a manufacturing method therefor, the pouch type battery cell comprising: a pouch type battery case made of a laminate sheet; an electrode assembly accommodated in the pouch type battery case; and a vent part for discharging the gas inside the pouch type ...

A separator and an electrochemical device comprising same according to the present invention have a low internal resistance between the separator and an electrode. The separator comprises a heat resistant coating layer containing heat resistant particles, wherein the heat resistant particles are inorganic particles ...

The present invention relates to a battery cell having asymmetrically formed electrode leads, and a battery module comprising same, and provides a battery module having superior space efficiency and improved mechanical strength.

The present invention relates to a battery cell having asymmetric electrode leads, and a battery module comprising same, and provides a battery module having excellent space efficiency and improved mechanical strength.

A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a first bus bar connected with an electrode lead extending from the battery cells; and a connection member connected with the first bus bar for connection with othe...

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising same. Particularly, the objective of the present invention is to provide a non-aqueous electrolyte solution for a lithium secondary battery, comprising a lithium salt, an org...

The present invention relates to a battery pack comprising: a battery module assembly including two or more battery modules, each of which includes one or more battery cells embedded and arranged adjacent to each other in a cartridge; a base plate on which the battery module assembly is mounted; and a hold-down brac...

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. Specifically, the present invention relates to: a non-aqueous electrolyte for a lithium secondary battery, comprising a lithium salt, an organic solvent, and a compound serving ...

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. Specifically, the present invention relates to: a non-aqueous electrolyte for a lithium secondary battery, comprising a lithium salt, an organic solvent, and a compound serving ...

The present invention provides: a negative electrode for a lithium secondary battery having excellent dispersibility, adhesion, and tensile strength properties; and a lithium secondary battery including same. The negative electrode for a lithium secondary battery comprises a negative electrode active material, a con...

A solid electrolyte membrane according to the present invention comprises a polymer material having low ionic conductivity, by which an ionic conduction blocking layer is formed in the electrolyte membrane through polymer phase separation under high-temperature conditions such as increases in the internal temperatur...

A battery management device according to an embodiment of the present invention comprises: a voltage measurement unit configured to measure a voltage of a battery module and output a measured voltage value; a current measurement unit configured to measure charging current of the battery module and output a measured ...

According to the present invention, a battery pack comprises a plurality of battery modules and a pack case in which the battery modules can be fixedly installed, wherein the pack case may comprise: a pack tray which supports the bottom of the battery modules; and a pack cover which is coupled to the pack tray to co...

Disclosed are a secondary battery and a battery pack comprising the secondary battery. According to an aspect of the present invention, provided is a secondary battery, in which a short-circuit portion, accommodated in an external casing and having electrical conductivity, is attached to a separator in an electrode ...

A pouch-type battery case according to an embodiment of the present invention for solving the problem comprises a cup part which is formed to accommodate therein an electrode assembly formed by stacking an electrode and a separator, wherein the cup part includes: a bottom portion forming the bottom; outer walls form...

The irreversible additive included in a cathode material for a secondary battery, according to an embodiment of the present invention, is an oxide represented by chemical formula 1, wherein the oxide has a trigonal crystalline structure. Li2+aNi1-bTibO2+c(1). In the formula, -0.2=a=0.2, 0

An anode for a lithium secondary battery, of the present invention, comprises: a first anode active material layer arranged on a current collector; and a second anode active material layer arranged on the first anode active material layer, wherein the first anode active material layer comprises uncoated artificial g...

The present invention relates to a battery cell for evaluating an internal short circuit, and a method for evaluating using the battery cell, wherein an internal short circuit state of a battery cell can be easily induced and, at the same time, an effective internal short circuit evaluation is possible, the battery ...

The present invention relates to a battery module comprising a venting structure, and a battery pack comprising same. The battery module according to an embodiment of the present invention comprises: a battery cell stack which is a stack of a plurality of battery cells; a module frame for accommodating the battery c...

A battery rack according to an embodiment of the present invention comprises: a plurality of battery modules each of which comprises battery cells; a rack case in which the plurality of battery modules are received; an extinguishing water supply unit which is connected to the plurality of battery modules; and a brac...

The present invention relates to an anode for a secondary battery, a manufacturing method of same, and a lithium metal secondary battery including same, the anode being formable by a more simplified method, and comprising an anode protection layer capable of effectively inhibiting the growth of acicular dendrites wh...

A battery module according to an embodiment of the present invention comprises: multiple battery cells stacked on each other; a module case receiving the multiple battery cells; and multiple thermal runaway prevention units provided in the module case and disposed between each pair of the multiple battery cells in t...

The present invention provides a battery pack in which the risk of secondary ignition or explosion is reduced. The battery pack according to the present invention for achieving the above purpose comprises: at least one battery module which includes a cell assembly having a plurality of secondary batteries arranged i...

The present invention relates to a battery pack comprising: one or more battery module housings each of which accommodates a plurality of battery modules therein; a battery pack case in which the one or more battery module housings are accommodated; a water tank which is disposed over the battery module housings; an...

The present invention relates to a battery pack comprising: one or more battery module housings each of which accommodates a plurality of battery cells therein; a battery pack case in which the one or more battery module housings are accommodated; a water tank which is disposed on the battery module housings; and a ...

The invention of the present application relates to an electrode-forming device that is equipped with a notching pilot pin for reducing a level difference that can occur during the process of notching an electrode, and a method for forming an electrode using the device.

Provided is a method for recovering and reusing an active material from a positive electrode scrap. The method for reusing a positive electrode active material of the present invention comprises the steps of: (a) thermally decomposing a binder and a conductive material in an active material layer by heat treating in...

The present invention relates to a battery module having a pocket capable of capturing flare and spark ejected at the time of swelling, and more particularly to a battery module including a cell stack including a plurality of battery cells stacked in a vertical direction and a protective case configured to receive t...

The present invention relates to a pouch film laminate for manufacturing a pouch-type battery case accommodating an electrode assembly therein. The pouch film laminate of the present invention comprises: a sealant layer prepared from a first polymer and formed in the innermost layer; a surface protection layer prepa...

An electrode for a secondary battery, according to one embodiment of the present invention, comprises an electrode current collector and an electrode layer located on the electrode current collector, wherein the electrode layer includes an active material, a conductive material, and an electrode composition in which...

The present invention relates to an electrode assembly manufacturing apparatus including an electrode sheet supply unit configured to supply an electrode sheet having an electrode mixture coating portion and an electrode mixture non-coating portion formed thereon, a cutting unit disposed at the rear of the elec...

The present invention relates to a gas venting device, and a battery module and battery pack comprising same, wherein, by continuously reducing the cross-sectional area of a flow path along a gas discharge direction, a greater flow rate of gas can be discharged even when a venting disc having the same area is used. ...

The present invention relates to a gas venting device, and a battery module and a battery pack comprising same. By continuously reducing, in a gas discharge direction, the cross-sectional area of a flow path, a greater flow rate of gas can be discharged even when a venting disc having the same area is used. ...

The present disclosure relates to a separator. The separator includes an electrode 5 adhesive portion having a high content of binder and formed on the surface of the separator to provide increased binding force to an electrode and improved processability during the manufacture of a battery. Thus, the separator and ...

WELDING ELECTRODE INSPECTION DEVICE FOR MEASURING WHETHER WELDING ELECTRODE IS NORMAL AND INSPECTION METHOD USING SAME The present invention relates to a welding rod inspection apparatus for measuring whether a welding rod is deformed and an inspection method using the same, and more particularly a welding rod insp...

Disclosed is a current measurement apparatus configured to quickly block current. The current measurement apparatus includes a first terminal; a second terminal; a resistor interposed in a separated space between the first terminal and the second terminal; a circuit board; a control unit mounted on the circuit bo...

The present invention relates to a secondary battery manufacturing method and a secondary battery. The secondary battery manufacturing method, according to the present invention, comprises: a cutting step of forming a cut part by cutting a slit in a pouch portion in an arc shape; a forming step of, after the cutting...

The present invention provides a sealing process for a secondary battery of the present invention, which thermally fuses and seals a sealing portion that extends along an edge 5 surface of a battery case, the sealing process comprising: an arrangement operation of disposing the sealing portion of the battery ca...

The present invention provides a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. Specifically, the non-aqueous electrolyte for a lithium secondary battery comprises a lithium salt, an organic solvent, and a compound represented by chemical formula 1, whereby a...

The present invention relates to a battery pack assembly system and to a battery pack assembly method using same, the battery pack assembly system comprising: a battery cell supply unit for arranging and supplying a plurality of battery cells; a robot arm for moving the plurality of battery cells; a plasma processin...

Two types of solvents are used when coating an adhesive layer, and a beta crystalline phase of a second binder resin is induced due to a polarity ratio, and as a result, uniform porous structures are formed, thus improving movement paths of lithium ions, such that even when the adhesive layer is formed, resistance o...

According to the invention, provided is a battery pack comprising a plurality of battery modules, and a pack case in which the battery modules can be fixed and installed, wherein the pack case comprises: a pack tray located below the battery modules; and a pack cover which is mutually coupled to the pack tray so as ...

The present invention provides a battery pack in which the risk of secondary ignition or explosion is reduced. The battery pack according to the present invention for achieving the above purpose comprises at least two battery modules arranged in one direction; and an extinguishment unit. The extinguishment unit comp...

In order to solve the problem, an electrode assembly according to an embodiment of the present invention comprises: a first electrode which is formed to have one sheet shape and which has an in-folding shape and an out-folding shape repeated at predetermined intervals; a second electrode including a plurality of pie...

The present invention relates to a battery module that prevents swelling of a battery cell and a method for manufacturing same. The battery module according to an embodiment of the present invention comprises: a battery cell stack having a plurality of battery cells stacked therein; a first frame having a lower side...

A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame for accommodating the battery cell stack; and a heat sink formed under the module frame to cool the plurality of battery cells, wherein the heat sink...

An anode current collector for a lithium-free battery according to an embodiment of the present invention is an anode current collector for a lithium-free battery, the anode current collector comprising: a metal current collecting substrate; a conductive layer that is formed on at least one surface of the metal curr...

A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame for accommodating the battery cell stack; an end plate for covering the front and rear surfaces of the battery cell stack; a heat sink formed on the ...

A welding quality inspection device according to the present invention is a device for inspecting welding quality at a welding part for electrical connection or mechanical coupling in a lithium secondary cell. The welding quality inspection device is characterized by comprising: a measurement unit which brings a res...

The present invention provides a lithium-free battery, and a method for manufacturing same, the lithium-free battery comprising a positive electrode, a negative electrode, a separator, and a lithium non-aqueous electrolyte, wherein the negative electrode includes: a metal substrate including at least one metal selec...

The present invention relates to a battery module for which stiffness is secured and which has a simplified structure, and a battery pack including same. A battery module, according to one embodiment of the present invention, comprises: a battery cell stack in which a plurality of battery cells are stacked; a bottom...

A battery pack according to one embodiment of the present invention comprises: a plurality of battery modules; a plurality of heat sinks formed under each of the plurality of battery modules; a first flow channel for supplying a refrigerant to each of the plurality of heat sinks; and a second flow channel for discha...

Proposed is a method for manufacturing a globular carbon-based anode active material, the method comprising the steps of: mixing a small grain flake graphite and a large grain flake graphite which has a larger mean diameter than the small grain flake graphite, followed by globularization to prepare globular raw part...

Disclosed is a battery pack having improved stability against thermal runaway of a battery module. A battery pack according to the present invention for achieving the above objective comprises; at least one battery module including a plurality of battery cells and a module housing for accommodating the plurality of ...

The present invention provides a battery device comprising: a plurality of battery cells; a BMS for managing the plurality of battery cells; and a connection control unit that enables the plurality of battery cells to be sequentially connected to the BMS, wherein the connection control unit connects a battery cell t...

The present invention relates to a battery module simulation system and method that can easily change the pressure and temperature applied to a battery cell in a pressure measurement test of the battery cell, and thus can easily implement pressure and temperature conditions in a battery module. ...

The present invention relates to a battery pack comprising a heat dissipation structure of a protective circuit module (PCM) using a heat dissipation tape, and provides a battery pack comprising a heat dissipation structure for dispersing and dissipating heat from a protection circuit module (PCM) that is formed by ...

A battery pack according to an embodiment of the present invention comprises: a battery module comprising a battery cell stack structure having a plurality of battery cells stacked therein; and a pack frame which accommodates the battery module, wherein the pack frame comprises a bottom portion on which the battery ...

In an FPCB comprising a pattern circuit layer according to an embodiment of the present invention for achieving the above objects, the pattern circuit layer has a pattern fuse embedded therein, and the pattern fuse includes: a first conductive wire made of a metal and having a spiral structure; and a second conducti...

The present disclosure relates to a separator for a lithium 5 secondary battery, a method for manufacturing the same, and a lithium secondary battery including the separator. The separator includes a porous polymer substrate having a plurality of pores, and a porous coating layer formed on at least one surface of...

An electrode assembly according to an embodiment of the present invention includes a plurality of unit cells for forming a radial structure with 5 reference to a center, wherein a thickness of the unit cell is reduced while going to the center from an external side of the radial structure with respect to a horizonta...

A battery pack according to an embodiment of the present invention comprises: a plurality of battery modules; a pack housing in which the plurality of battery modules are received; and an energy consumption unit which is received in the pack housing and connected to at least one of the plurality of battery modules t...

Provided is a method for recovering and reusing an active material from cathode scrap. A method for reusing a cathode active material according to the present invention comprises the steps of: (a) heat-treating, in air, a cathode scrap comprising a lithium cobalt oxide cathode active material layer on a current coll...

The present invention relates to a positive electrode for a lithium secondary battery, and a 5 lithium secondary battery including the same. The positive electrode for a lithium secondary battery according to the present invention sequentially includes a first mixture layer and a second mixture layer on a positiv...

The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed ...

An electrode manufacturing apparatus according to an embodiment of the present invention, driving an electrode substrate having a coated portion and a non-coated portion, comprises a driving roller which drives the electrode substrate, wherein the driving roller comprises a first roller and a second roller surroundi...

The present invention relates to a composite anode active material comprising: a silicon-based core particle; an outer carbon coating layer located on the silicon-based core particle; first single-walled carbon nanotubes, which are in contact with the outer carbon coating layer and protrude from the outer carbon coa...

The present invention relates to a cathode for a lithium secondary battery, comprising: first cathode active material layers comprising a nickel-rich first cathode active material; and second cathode active material layers comprising a second cathode active material and a solid electrolyte. The present invention pro...

The present invention relates to an anode and a secondary battery comprising same, the anode comprising: a core including an anode active material layer, wherein the anode active material layer includes an anode active material, the anode active material includes a carbon-based anode active material, and the carbon-...

Disclosed are an anode active material, an anode comprising same, and a lithium secondary battery, the anode active material comprising: a graphite core; a first carbon coating layer encompassing the outside of the graphite core; and a second carbon coating layer encompassing the outside of the first carbon coating ...

Provided are a separator and an electrochemical device comprising same, the separator comprising: a core part substrate having a plurality of pores; and a skin part substrate having a plurality of pores positioned on both surfaces of the core part substrate, wherein both the core part substrate and the skin part sub...

The present invention relates to an electrode assembly and a secondary battery comprising the same. The electrode assembly according to the present invention comprises an 5 electrode stack, in which electrodes and a separator are alternately stacked to be wound and a temperature difference compensating member dispos...

A battery cell according to one embodiment of the present disclosure includes an electrode assembly containing a plurality of electrode plates stacked with a separator interposed therebetween; and a battery case in which the electrode assembly is mounted onto a receiving part, wherein the electrode assembly compr...

A battery pack, according to the present invention, may comprise: a pack case; a plurality of battery modules which are loaded in the pack case; a plurality of slave modules which are mounted in the respective battery modules so as to monitor the respective states of the battery modules, and which are each provided ...

The present invention relates to a negative electrode comprising a negative electrode current collector; and a negative electrode active material layer formed on the negative electrode current collector, wherein the negative electrode active material 5 layer comprises a silicon-based active material, a binder, a ...

A non-aqueous electrolyte solution for a lithium secondary battery according to the present technology includes: a lithium salt; an organic solvent; and a first additive, and the first additive includes a compound represented by following chemical formula 1: [Chemical formula 1] 5 . Herein, R1 is a substituted or...

A negative electrode active material for a lithium secondary battery according to the present technology is composed of artificial graphite secondary particles obtained by granulating carbon-based initial particles having different average particle diameters (D50), in which the carbon-based initial particles include...

The present disclosure relates to a negative electrode active material for a lithium secondary battery, a lithium secondary battery including the same, and a method for preparing the negative electrode active material. The negative electrode active material 5 includes a coating layer self-bound to the surface of ...

According to one embodiment of the present invention, provided are a secondary battery electrode assembly and a secondary battery comprising same, the electrode assembly comprising: a stack including a cathode, an anode and a separation membrane inserted between the cathode and the anode, the separation membrane bei...

The present invention relates to a cathode for a lithium secondary battery, and a lithium secondary battery comprising same, and the cathode for a lithium secondary battery sequentially comprises a first coating layer and a second coating layer on a current collector, wherein, since a pattern layer in which a conduc...

According to the present invention, provided may be a battery pack comprising: a pack case including a pack tray which supports the lower parts of battery modules, and a pack cover which covers the battery modules and is provided in contact with the top surfaces of the battery modules; and a heat sink installed on t...

The present invention relates to a non-destructive diagnostic method capable of diagnosing the degradation of a lithium secondary battery without disassembling the battery, and provides a method for diagnosing the cause of degradation of a lithium secondary battery, comprising the steps of: (A) preparing a lithium s...

An anode for a secondary battery according to an embodiment of the present invention comprises: an anode current collector; a first active material layer obtained by coating a first anode slurry containing a first anode active material on the anode current collector; and a second active material layer obtained by co...

A secondary battery and a method for manufacturing the secondary battery are disclosed. The purpose of the present invention is to manufacture a secondary battery having a small radius of curvature in comparison to the conventional art.

The present invention relates to a pouch-type battery cell, which is a battery cell accommodating an electrode assembly in a pouch-type battery case, in which: the electrode assembly includes positive and negative electrodes each having a structure in which the overall-width direction is shorter than the overall-len...

The present invention relates to a device and method for diagnosing the state of a battery pack and, more specifically, to a device and method for diagnosing the state of a battery pack on the basis of the states of charge of battery modules provided in the battery pack. According to the present invention, the state...

The present invention relates to a pressing apparatus capable of uniformly pressing an object to be pressed using a pressure adjustment portion having a fluid contained therein irrespective of the shape of the object and a pressing method using the same.

The present invention relates to a pouch-shaped battery case shaping apparatus including a volatile lubricant supply unit and a pouch-shaped battery case manufacturing method using the same, and more particularly to a pouch-shaped battery case shaping apparatus including a punch configured to shape a laminate ...

“ELECTRODE QUALITY EVALUATION METHOD AND ELECTRODE MANUFACTURING METHOD” Provided is a method of evaluating electrode quality, which includes: providing a plurality of electrodes which include a current collector and an active material layer 5 formed on the current collector and have not been roll-pressed; mea...

The present invention relates to a pouch-shaped battery case shaping apparatus using an electromagnetic field and a pouch-shaped battery case shaping method using the same, and more particularly to a pouch-shaped battery case shaping apparatus including a punch configured to press a laminate sheet in order to s...

A secondary battery of the present invention comprises: an electrode assembly having an electrode lead coupled thereto; a pouch including an accommodation part in which the electrode assembly is accommodated while the tip of the electrode lead is drawn out of the accommodation part, and a sealing part which is forme...

A battery pack according to the present invention comprises: a plurality of battery cells; a temperature measurement unit for measuring the temperature of at least one from among the plurality of battery cells; a temperature sensor which is connected to the temperature measurement unit, and which detects the tempera...

The present invention relates to a battery case forming apparatus comprising: a punch for forming a battery case by pressing a laminate sheet; a die having an accommodation part, which has a size corresponding to that of an electrode assembly accommodation part formed by means of the punch; a holder for fixing the o...

Provided is a method for recovering and reusing an active material from positive electrode scrap. The method for reusing a positive electrode active material of the present invention comprises the steps of: (a) dry-grinding positive electrode scrap, comprising a lithium composite transition metal oxide positive elec...

The present invention relates to an electrode assembly and a battery cell comprising same, wherein the electrode assembly comprises: a positive electrode having a positive electrode mixture layer formed on at least one surface of a positive electrode current collector; a negative electrode having a negative electrod...

axyz2The present invention relates to a lithium secondary battery comprising a positive electrode a negative electrode a separation membrane and a non aqueous electrolyte wherein: the positive electrode comprises a positive electrode active material of LiNiMnCoO(a+x+y+z=2 0.9=a=1.1 0=x 0=y 0=z); the non aqueous elec...

The present invention relates to a positive electrode for a secondary battery the positive electrode comprising: a positive electrode current collector; a first positive electrode mixture layer laminated on the positive electrode current collector and comprising a first positive electrode active material and a first...

The present invention provides a battery pack the battery pack comprising: a plurality of cylindrical battery cells in which a cap assembly is coupled to an open side of a cylindrical can so as to form a clamping part and a first electrode terminal and a second electrode terminal are formed on the upper surface of t...

Provided are an electrode unit and a method for producing such an electrode unit. According to the present invention, after producing an electrode unit utilizing heat, the bending phenomenon of the electrode unit that arises from cooling same can be eliminated or minimized. To that end, the method for producing an e...

The present invention relates to an electrolyte containing a polydopamine and a lithium-sulfur battery including the same and, more particularly, to a technique in which polydopamine contained in an electrolyte adsorbs a lithium polysulfide eluted from a positive electrode of a lithium-sulfur battery. When using an ...

The present invention relates to a battery management system and to a battery management system that can prevent the insulation resistance between a voltage measurement unit and a control unit from dropping by separating the voltage measurement unit that measures battery voltages and the control unit that controls t...

A battery pack is disclosed. According to one embodiment of the present invention, the battery pack comprises: battery modules including a plurality of battery cells, which are stacked, and a casing member encompassing the plurality of battery cells; and a connecting member for connecting the plurality of battery mo...

The present invention relates to a cap assembly mounted on an open upper end of a cylindrical can of a battery having a structure in which an electrode assembly is embedded, comprising: a safety vent for discharging gas while rupturing when an internal pressure of the battery rises; an upward protruding cap plate mo...

The present invention relates to a secondary battery comprising an electrode assembly in which electrodes and separators are alternately stacked and wound wherein the electrode comprises: a current collector; a first coating layer formed by firstly coating an electrode active material on a surface of the current col...

A device and method for testing the strength of an end plate is provided. A test device according to an embodiment of the present invention is for testing an end plate mounted on a battery module. The test device comprises: a memory unit for storing a first parameter, which indicates the number of battery cells comp...

Disclosed is a bus bar assembly of the present invention. A bus bar assembly of the present invention is a bus bar assembly electrically connecting a plurality of battery cells each of which includes an electrode lead, and comprises: a fixed bus bar arranged in a rod conductor form; a pair of movable bus bars arrang...

The present application can provide a battery module, a fabrication method therefor, and a resin composition applied to the fabrication method. The present application can provide a battery module that is fabricated in a simple process and at low cost and shows an excellent output-to-volume, a fabrication method the...

The present invention relates to a strip-shaped electrode used for a cylindrical jelly roll in which a strip-shaped electrode assembly is wound in a cylindrical shape such that a hollow space is formed at a core part thereof, and a lithium secondary battery comprising the same, the strip-shaped electrode comprising:...

The present invention relates to a composition for a gel polymer electrolyte, and a lithium secondary battery including a gel polymer electrolyte formed therefrom, and more specifically, to a composition for a gel polymer electrolyte, and a lithium secondary battery including a gel polymer electrolyte prepared by po...

Composite particles which are anode active materials, according to the present invention, sufficiently secure electrochemical reaction sites of solid electrolytes and electrode active materials, and thus, problems of capacity reduction and output reduction do not occur. The composite particles according to the prese...

The present invention relates to an electrode assembly having a lamination stack type structure in which a bending phenomenon is prevented, and the electrode assembly of the present invention comprises a unit body stack part formed by stacking at least one basic unit having a four-layer structure in which a first el...

The present invention provides: a press jig for pressing battery cells, the press jig comprising a press unit, which includes a plurality of press plates positioned at the outermost parts of a plurality of battery cells and between the battery cells so as to separate the space in which the plurality of battery cells...

The present invention provides a battery assembly in which battery cells can be pressed, the battery assembly comprising: a plurality of battery cells; a pressing part including a plurality of pressing plates and pressing frames, the pressing plates being positioned on the outermost portions of the plurality of batt...

Provided is a charging/discharging device comprising: a temperature measuring instrument suitable for measuring the temperature of each secondary battery so that the temperature deviation between secondary batteries, which can occur during charging/discharging in a formation process and a capacity test after a secon...

A slot die coater adjusting device according to an embodiment of the present invention comprises: a lower die having a lower discharge port for discharging a first active material slurry; and an upper die having an upper discharge port for discharging a second active material slurry, wherein the upper die is moved t...

A battery module according to one embodiment of the present invention comprises: a plurality of battery cells stacked adjacently in parallel; a battery cell assembly having a plurality of electrode leads protruding from each of the plurality of battery cells; and a module cover for accommodating the battery cell ass...

The present invention relates to a battery module having improved space utilization of a secondary battery, and a battery pack including same. The battery module comprises: a battery cell stack in which multiple battery cells are stacked; a bus bar frame formed at each of the front and back surfaces of the battery c...

The present invention relates to a method for manufacturing a cathode for a secondary battery, the method comprising the steps of: providing a cathode having a cathode current collector and a cathode active material layer formed on the cathode current collector and containing a lithium transition metal oxide; and im...

The present invention pertains to a negative electrode for a lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including same. More specifically, the negative electrode for a lithium secondary battery according to the present invention has a protective layer containing a thr...

An apparatus for determining the state of degradation of a battery is provided. The apparatus comprises: a sensing unit configured to output sensing information indicating a voltage and a current of the battery; and a control unit. The control unit determines a degradation rate and a measured Q-dV/dQ curve of the ba...

The present invention relates to a cathode for a secondary battery and a lithium secondary battery including the cathode for a secondary battery, the cathode comprising a cathode active material layer formed on the surface of a cathode current collector, wherein: the cathode active material layer has a multilayer st...

Disclosed are a CID filter and a secondary battery including the CID filter. According to an aspect of the present invention, disclosed is a secondary battery in which a main through hole and auxiliary through holes are formed in a main body of a CID filter, the auxiliary through holes being formed between a CID gas...

The present invention relates to a secondary battery comprising: a first electrode having a first current collector and a first electrode active material coated on at least one surface of the first current collector; and a second electrode having a second current collector and a second electrode active material coat...

The present invention relates to a negative electrode for a secondary battery comprising: a negative electrode current collector; and a negative electrode active material layer formed on the negative electrode current collector and including a negative electrode active material for a secondary battery, wherein the n...

The present invention relates to: a current collector comprising a metal plate having a plurality of through holes formed in the thickness direction, and a porous reinforcing material filling the through holes of the metal plate; and a secondary battery comprising the current collector, and provides the effects of i...

The present invention provides an anode active material comprising: an active material core capable of adsorbing and dissolving lithium ions; a plurality of conductive materials located on the surface of the active material core; a plurality of organic linkers each including a hydrophobic group and a polar functiona...

A battery module according to an embodiment of the present invention comprises: a battery cell laminate in which a plurality of battery cells are laminated; a first L-shaped frame which receives the battery cell laminate and has an upper portion and one side surface that are open; and a second L-shaped frame which r...

The present invention relates to: an electrochemical element which comprises a separator having through-holes formed therein, a through-hole cover material, and a spacer; and a method for using the electrochemical element to evaluate the safety of an energy storage device by means of an internal short circuit. An en...

The present invention relates to a coating separator which is for a secondary battery and includes: a separator substrate comprising a porous polymer resin; and a coating layer coated on at least one surface of the separator substrate, wherein the coating layer includes an inorganic material and a coupling agent, th...

The present invention relates to: an electrolyte for a lithium secondary battery, comprising lithium salt, an organic solvent and an additive, wherein the additive comprises a compound represented by chemical formula 1 and a compound represented by chemical formula 2; and a lithium secondary battery comprising the e...

A battery module according to one embodiment of the present invention comprises: a cell stack including a plurality of battery cells; and a phase change preheater disposed on the cell stack and containing a phase change material therein which caseus a phase change according to the formation of crystal nuclei and thu...

The present invention relates to a non-aqueous electrolyte additive, a non-aqueous electrolyte for a lithium secondary battery including same, and a lithium secondary battery including same, and, particularly, to: a non-aqueous electrolyte additive using a Lewis base-based compound capable of quickly reacting with a...

The disclosed battery module comprises: a cell assembly including at least one battery cell; a cover plate for covering one surface of the cell assembly; and a busbar frame which covers the other surface, adjacent to the one surface, of the cell assembly, and is rotatably coupled to the cover plate, wherein the cove...

A battery module according to the present invention is a battery module comprising: a plurality of battery cells; and a module housing forming an inner space for accommodating the battery cells, wherein the module housing may comprise: a base plate forming the bottom surface of the module housing; a cover plate inte...

A battery pack according to an embodiment of the present invention comprises: a battery module comprising a cell stack body in which one or more battery cells are stacked, and a module frame for accommodating the cell stack body; a pack frame for accommodating the battery module; and a thermally conductive resin lay...

The present invention relates to a battery module including a busbar structure for connecting to an electrode lead, the battery module comprising: a battery cell stack in which a plurality of battery cells are stacked; electrode leads which are formed protruding from the battery cell stack; a busbar electrically con...

A battery module according to an embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame that accommodates the battery cell stack; and a first heat sink that is located above the module frame, wherein the first heat sink includes an upper ...

The present invention relates to an electrolyte for a lithium secondary battery, and a lithium secondary battery comprising same, the electrolyte comprising: a lithium salt; a non-aqueous solvent including a fluorine-based organic solvent; and a fluorine-based compound represented by [chemical formula 1]. ...

A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame for housing the battery cell stack; and a barrier located between the battery cell stack and module frame, wherein the barrier comprises a first barr...

A battery module according to an embodiment of the present invention comprises: a battery cell stack body in which a plurality of battery cells are stacked; a U-shaped frame for accommodating the battery cell stack body and having an open upper portion; an upper plate provided on the open upper portion of the U-shap...

The invention of the present application relates to a gasket for a cylindrical battery and a cylindrical battery comprising same, the gasket comprising: a support portion for supporting a cap assembly; and a crimping portion extending upward outside the support portion, and having an end at which an extension portio...

The present invention relates to a method for quantifying and diagnosing the quality of manufacturing equipment, that is, to a quantitative diagnostic method for the quality of manufacturing equipment. It is possible to quantify the quality of manufacturing equipment having a plurality of production elements and dia...

A battery management system according to the present disclosure corresponds to a system for performing an individually configured task by each of multiple battery management systems, and transmitting a result of the performed task to a master battery management system via wireless communication. The battery manageme...

A battery pack provided in a vehicle according to an embodiment of the present invention comprises: a battery module having a battery cell; a relay unit connecting the battery module and a motor unit of the vehicle; and a control unit connected to the relay unit and the motor unit and controlling the relay unit and ...

The present invention relates to a solid electrolyte membrane for a solid-state battery, the solid electrolyte membrane comprising two or more solid electrolyte layers and one or more volume expansion layers, wherein the volume expansion layers are arranged between the solid electrolyte layers, the solid electrolyte...

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising same. In particular, the present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, comprising: as a first additive, a compound represen...

The present invention relates to a conductive material dispersion which comprises a carbon-based conductive material, a main dispersant, an auxiliary dispersant, and a dispersion medium, wherein the main dispersant is a nitrile-based copolymer, and the auxiliary dispersant is a copolymer including: an oxyalkylene un...

A battery module according to an embodiment of the present invention comprises: a battery cell laminate in which a plurality of battery cells are laminated side by side and adjacent to one another; and a heating-cooling composite fin interposed between adjacent battery cells among the plurality of battery cells. The...

A battery balancing device according to one embodiment of the present invention comprises: a first selection unit for selectively connecting each of a plurality of batteries, which are included in a first battery group, between a first node and a second node; a resistance adjustment unit for connecting a first resis...

The present invention relates to a lithium secondary battery case composed of laminate sheet including an outer layer / barrier layer / inner layer structure, the case comprising: a first area which is an area in which gas discharge is easier or expansion is relatively better; and a second area which is the remainin...

The present invention relates to an electrode slurry coating method and apparatus comprising a pressure adjustment member for adjusting the discharge pressure of slurry, and enables electrode slurry to be discharged under constant pressure even when a coated part and an uncoated part are repeatedly formed on a curre...

The present invention relates to an anode active material, comprising: an active material core capable of occluding lithium ions thereto or discharging lithium ions therefrom; a conductive material positioned on the surface of the active material core; an organic linker connecting the active material core and the co...

A battery module according to an embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a lower frame for housing the battery cell stack; and an upper plate for covering the top of the lower frame, wherein between the plurality of battery cells of the b...

The present invention relates to a method and a system for detecting a connection fault of a parallel connection cell, and, more particularly, to a method and a system for detecting a connection fault of a parallel connection cell, the method and the system providing improved accuracy for a battery being discharged ...

A battery module according to an embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame in which the battery cell stack is received, and a top portion of which is open; an upper plate for covering the battery cell stack on the open top po...

An ESS according to an embodiment of the present invention comprises: a sub-ESS lamination including a plurality of sub-ESSs including a plurality of battery modules and a battery rack for receiving the plurality of battery modules; an ESS housing for receiving the plurality of sub-ESSs; a sensor installed in the ES...

A battery pack, according to the present invention, may comprise: a plurality of battery modules arranged along at least one direction; a resistor connected to an abnormal battery module operating abnormally from among the battery modules to absorb energy; an event detection unit configured to detect the abnormal ba...

The present invention relates to a cathode additive, a method of preparing same, a cathode comprising same, and a lithium secondary battery. More specifically, one embodiment of the present invention provides a cathode additive for a lithium secondary battery, the additive comprising: a compound represented by chemi...

A battery module according to an embodiment of the present invention comprises: a battery cell staked structure in which a plurality of battery cells are stacked; and a wrap film covering the top surface, bottom surface, and side surfaces of the battery cell stacked structure, wherein the wrap film continuously exte...

A battery module according to an embodiment of the present invention comprises: a battery cell stack comprising a plurality of battery cells stacked together; a first frame member which receives the battery cell stack therein and is open at the top thereof; a second frame member which is disposed on the first frame ...

The present invention relates to a battery module using insulation oil, and a battery pack including same. The battery module comprises: a battery cell laminate constituted by battery cells which are stacked on one another, each of which is constituted by edge surfaces and flat surfaces; electrode leads protruding f...

A battery module according to an embodiment of the present invention comprises: a first module and a second module, each of which includes a cell stack including a plurality of battery cells vertically stacked, and a busbar frame assembly for covering the front surface and the rear surface of the cell stack; and a p...

A battery module is disclosed. A battery module according to an embodiment of the present invention comprises: a battery cell stack comprising multiple battery cells stacked on each other; a casing enclosing the battery cell stack; and a heat transfer member disposed between one battery cell of the battery cell stac...

The present invention provides an electrolyte for lithium secondary battery and lithium secondary battery comprising same, the electrolyte comprising lithium salts, an organic solvent, and a compound represented by chemical formula 1.