[One]Cross-Citation with Related Application(s)
[2]
This application claims the benefit of priority based on Korean Patent Application No. 10-2019-0034618 dated March 26, 2019, and all contents disclosed in the literature of the Korean patent application are incorporated as a part of this specification.
[3]
The present invention relates to a battery module and a manufacturing method thereof, and more particularly, to a battery module having improved assembly easiness and a manufacturing method thereof.
background
[4]
Since the secondary battery is easy to apply according to product groups and has electrical characteristics such as high energy density, it is commonly applied not only to portable devices but also to electric vehicles or hybrid vehicles driven by an electric drive source, power storage devices, and the like. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that not only the primary advantage of being able to dramatically reduce the use of fossil fuels but also the fact that no by-products are generated from the use of energy.
[5]
The battery pack applied to the electric vehicle has a structure in which a plurality of cell assemblies including a plurality of unit cells are connected in series to obtain high output. In addition, the unit cell can be repeatedly charged and discharged by an electrochemical reaction between components, including positive and negative current collectors, separators, active materials, electrolytes, and the like.
[6]
On the other hand, in recent years, as the need for a large-capacity structure, including its use as an energy storage source, increases, the demand for a battery pack having a multi-module structure in which a plurality of battery modules in which a plurality of secondary batteries are connected in series and/or in parallel is aggregated is increasing. .
[7]
When configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module including at least one battery cell is first configured, and other components are added using the at least one battery module to configure the battery pack. How to do it is common The number of battery modules included in the battery pack or the number of battery cells included in the battery module may be variously set according to a required output voltage or charge/discharge capacity.
[8]
When manufacturing the battery module, the bus bar is connected to the electrode lead of the battery cell assembly. In this process, the upper assembly on which the flexible printed circuit board for sensing is formed and the bus bar frame to which the bus bar is attached are hinged and rotated to form the bus bar frame. It has a structure coupled to the battery cell assembly. However, in this structure, there is a problem in that the bus bar frame is separated and flows from the hinge part, or the flexible printed circuit board is damaged in the hinge part. There is a problem with sorting.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[9]
An object of the present invention is to solve this problem, and to provide a battery module and a method for manufacturing the same, which facilitates assembly between parts in the battery module and improves stability by simplifying the structure.
[10]
However, the problems to be solved by the embodiments of the present invention are not limited to the above problems and may be variously expanded within the scope of the technical idea included in the present invention.
means of solving the problem
[11]
A battery module according to an embodiment of the present invention accommodates a battery cell assembly including a plurality of battery cells stacked adjacent to each other and stacked in parallel, a plurality of electrode leads protruding from each of the plurality of battery cells, and the battery cell assembly and a module cover, wherein the module cover corresponds to an upper cover part exposing the plurality of electrode leads while covering the upper surface and side surfaces of the battery cell assembly, and a plurality of electrode leads exposed by the upper cover part and a bus bar frame unit integrally formed with the upper cover unit by being coupled to the upper cover unit at a position where the bus bar frame unit includes a plurality of bus bars electrically connected to the plurality of electrode leads.
[12]
The bus bar frame part may include a plurality of slits into which the plurality of electrode leads are inserted, and the plurality of bus bars may be positioned inside the plurality of slits.
[13]
The plurality of slits may be opened toward a lower surface of the battery cell assembly exposed by the upper cover part.
[14]
The battery cell assembly may further include an insulating pad surrounding the periphery of the battery cell assembly and positioned between the battery cell assembly and the upper cover part.
[15]
The upper cover part may further include a cell housing tape positioned between the battery cell assembly and the upper cover part.
[16]
The module cover may further include a lower plate that covers a lower surface of the battery cell assembly exposed by the upper cover part.
[17]
The battery module may further include a heat dissipation pad positioned between the lower plate and the battery cell assembly.
[18]
Each of the plurality of bus bars may include a clamp part into which the electrode lead is inserted, and a fixing part for connecting and fixing the clamp part.
[19]
A portion in which the bus bar frame part and the upper cover part are coupled may be in a state in which they are coupled by welding.
[20]
A method for manufacturing a battery module according to another embodiment of the present invention provides a battery cell assembly including a plurality of battery cells stacked adjacent to each other and a plurality of electrode leads protruding from each of the plurality of battery cells preparing an upper cover part including a space for accommodating the battery cell assembly including an upper surface and two side surfaces perpendicular to the upper surface, the upper cover part and two manufacturing a module cover by integrally combining the upper cover part and the bus bar frame part after disposing the bus bar frame part; and accommodating the battery cell assembly in the space.
[21]
The bus bar frame part includes a plurality of slits including openings into which the plurality of electrode leads are inserted, and the step of accommodating the battery cell assembly in the space includes inserting the plurality of electrode leads into the openings formed in the plurality of slits. It may include the step of inserting into
[22]
The bus bar frame part may include a plurality of bus bars positioned in the plurality of slits and electrically connected to the plurality of electrode leads.
[23]
The method may further include wrapping at least a portion of an outer surface of the battery cell assembly with an insulating pad before accommodating the battery cell assembly in the space.
[24]
The method may further include attaching a cell housing tape to an inner wall of the space of the upper cover part before accommodating the battery cell assembly in the space.
[25]
Accommodating the battery cell assembly in the space includes accommodating the battery cell assembly such that an upper surface of the battery cell assembly faces downward, and a lower surface of the battery cell assembly opposite to the upper surface of the battery cell assembly It may further include the step of arranging a lower plate to cover the coupling with the upper cover part.
[26]
The method may further include providing a heat dissipation pad positioned between the lower plate and a lower surface of the battery cell assembly.
[27]
The upper cover part and the bus bar frame part may be coupled by welding.
[28]
A battery pack according to another embodiment of the present invention may include the above-described at least one battery module and a pack case for packaging the at least one battery module.
[29]
A device according to another embodiment of the present invention may include the above-described at least one battery pack.
Effects of the Invention
[30]
According to the embodiments, it is possible to prevent damage to parts and assembly separation caused by the hinge structure by integrating the bus bar frame and the upper cover, and also to assemble in the form of inserting an electrode lead into a slit formed in the bus bar frame. Accordingly, it is possible to provide a battery module and a method for manufacturing the same, which simplifies the manufacturing process and increases precision.
Brief description of the drawing
[31]
1 is an exploded view of a battery module according to an embodiment of the present invention.
[32]
2 is a diagram illustrating a coupling state of a module cover and a battery cell assembly in a battery module according to an embodiment of the present invention.
[33]
3 is a view showing a coupling state of an electrode lead and a bus bar in the battery module according to an embodiment of the present invention.
[34]
4 is a view showing a module cover according to an embodiment of the present invention.
[35]
5 is a cross-sectional view illustrating a module cover and a battery cell assembly according to another embodiment of the present invention.
[36]
6 is a view showing a cross-section of a battery module according to another embodiment of the present invention.
Modes for carrying out the invention
[37]
Hereinafter, with reference to the accompanying drawings, various embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. The present invention may be embodied in several different forms and is not limited to the embodiments described herein.
[38]
In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.
[39]
In addition, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar. In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. And in the drawings, for convenience of description, the thickness of some layers and regions is exaggerated.
[40]
Further, when a part of a layer, film, region, plate, etc. is said to be “on” or “on” another part, it includes not only cases where it is “directly on” another part, but also cases where another part is in between. . Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. In addition, to be "on" or "on" the reference part means to be located above or below the reference part, and to necessarily mean to be located "on" or "on" in the direction opposite to the gravity no.
[41]
In addition, throughout the specification, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.
[42]
Hereinafter, a battery module according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 .
[43]
1 is an exploded view of a battery module according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a coupling state of a module cover and a battery cell assembly in a battery module according to an embodiment of the present invention, FIG. 3 is a view showing the coupling state of the electrode lead and the bus bar in the battery module according to an embodiment of the present invention
[44]
Referring to FIG. 1 , the battery module 10 according to the present embodiment includes a plurality of battery cells 110 stacked adjacent to each other and stacked in parallel, and a plurality of electrode leads protruding from each of the plurality of battery cells 110 . 120 ) including a battery cell assembly 100 , and a module cover 200 accommodating the battery cell assembly 100 , wherein the module cover 200 covers the top and side surfaces of the battery cell assembly 100 . In combination with the upper cover part 210 exposing the plurality of electrode leads 120 and the upper cover part 210 at positions corresponding to the plurality of electrode leads 120 exposed by the upper cover part 210, and a bus bar frame unit 220 integrally formed with the upper cover unit 210 , wherein the bus bar frame unit 220 includes a plurality of bus bars 230 electrically connected to the plurality of electrode leads 120 . includes
[45]
The battery cell assembly 100 is an assembly of secondary batteries including a plurality of battery cells 110 . The battery cell assembly 100 may include a plurality of battery cells 110 , and each battery cell 110 may include an electrode assembly, a battery case, and an electrode lead 120 protruding from the electrode assembly. The electrode assembly may include a positive electrode plate, a negative electrode plate, and a separator. The battery case is for packaging the electrode assembly, and may be formed of a laminate sheet including a resin layer and a metal layer. Such a battery case may include a case body and a cell terrace 112 (shown in FIG. 3 ). The electrode lead 120 may be electrically connected to the electrode assembly. In addition, the battery cell 110 may be a pouch-type battery cell having a plate shape, but is not limited thereto.
[46]
The electrode leads 120 may be formed in a flat plate to protrude toward at least one side of the battery cell 110 . These electrode leads 120 may be stacked and protruded in one direction, and through this, series or parallel connection between the electrode leads 120 may be possible. The electrode leads 120 may function as battery terminals and may be formed of a metal material such as copper or aluminum. In addition, the electrode lead 120 may be formed in various thicknesses and may be formed in various widths. The thickness or width of the electrode lead 120 may be manufactured differently according to the specifications of the secondary battery and the battery module.
[47]
The plurality of battery cells 110 are vertically stacked so that the electrode leads 120 are aligned in one direction to form the battery cell assembly 100 . The battery cell assembly 100 includes an upper cover part 210 exposing a plurality of electrode leads 120 while covering the top and side surfaces of the battery cell assembly 100 , and a plurality of parts exposed by the upper cover part 210 . It is received in the module cover 200 including the bus bar frame part 220 integrally formed with the upper cover part 210 by combining with the upper cover part 210 at a position corresponding to the electrode lead 120 of the . At this time, the electrode leads 120 stacked and protruded in one direction are electrically connected to the bus bar 230 included in the bus bar frame unit 220 .
[48]
That is, the bus bar frame part 220 includes a plurality of slits 221 into which the plurality of electrode leads 120 can be inserted, and the inside of each slit 221 is electrically connected to the electrode leads 120 . A bus bar 230 is located. The slit 221 is opened toward the lower surface of the battery cell assembly 100 exposed by the upper cover part 210 . The bus bar 230 has a tongs or clip shape elongated along the longitudinal direction of the slit 221 as shown in FIG. 3 . Referring to FIG. 3 , the bus bar 230 may be formed of a clamp part 231 formed to insert the electrode lead 120 , and a fixing part 232 for connecting and fixing the clamp part 231 .
[49]
The tongs 231 may be formed to extend from the fixing part 232 in an oblique direction toward the opening of the slit 221 , and when the electrode lead 120 is inserted, the electrode lead 120 is the tongs. Between the extended portions of the 231 may be in contact with the inner surface of the tongs (231). The fixing part 232 serves to connect and fix the tongs 231 at the lower side of the tongs 231 . The fixing part 232 is connected to the lower end of the tongs 231 , and according to an embodiment of the present invention, the fixing part 232 is formed to have a curvature downward of the tongs 231 , and the electrode lead 120 . ) facilitates insertion of the tongs 231 and at the same time elastically inhibits deformation or movement of the tongs 231 so that the tongs 231 are fixed.
[50]
The bus bar 230 as described above may be mounted on the slit 221 formed in the bus bar frame part 220 integrally formed with the upper cover part 210 . The slit 221 is opened in a direction opposite to the upper surface of the upper cover part 210 , and is opened in a direction facing the lower plate 300 as shown in FIG. 1 . Accordingly, as shown in FIG. 2 , when the battery cell stack 100 is accommodated in the module cover 200 , the electrode lead 120 is connected to the bus bar in a state in which the upper cover part 210 faces downward. The electrode lead 120 is inserted into the slit 221 to make contact with the 230 .
[51]
At this time, the tongs 231 and the fixing part 232 of the bus bar 230 are formed in a bent plate-shaped clip shape having a minimum width sufficient to be in contact with the flat surface of the electrode lead 120 . By reducing the unnecessary volume of the busbar structure, a lighter busbar device can be mounted on the battery module.
[52]
The electrode lead 120 is electrically connected to the bus bar 230 , and for this purpose, contact between the electrode lead 120 and the bus bar 230 is required. To this end, the electrode leads 120 are stacked in a flat plate shape in the horizontal direction to protrude from each of the plurality of battery cells 110 , and the protruding electrode leads 120 are, in turn, the tongs 231 of the bus bar 230 . ), it is contacted and fixed from the left and right by the tongs 231 to form an electrical connection with the bus bar 230 .
[53]
Next, the configuration of the module cover 200 will be described in more detail with further reference to FIG. 4 .
[54]
4 is a view showing a module cover according to an embodiment of the present invention.
[55]
The module cover 200 has an upper cover part 210 that covers the upper and both sides of the battery cell assembly 100 , and two surfaces not covered by the upper cover part 210 , that is, the electrode leads 120 are exposed. It is constituted by the two bus bar frame parts 220 covering the surface to be integrally formed.
[56]
As shown in FIG. 4 , the upper cover part 210 includes an upper surface covering the upper portion of the battery cell assembly 100 and two side surfaces extending vertically from the longitudinal edge of the upper surface to both sides. The upper cover part 210 may include a skeleton-shaped reinforcing material inside to increase rigidity. As described above, the upper cover part 210 composed of the upper surface and the side surfaces formed on both sides is formed to have an angled U-shape in cross section, and the side surfaces are formed to be elongated in the extending direction.
[57]
The two bus bar frame parts 220 are respectively coupled to both ends of the upper cover part 210 formed in this way. When the bus bar frame part 220 is integrally coupled to the upper cover part 210 , the module cover 200 in the form of a box with an open surface in which the battery cell assembly 100 can be accommodated is completed. In this case, the bus bar frame part 220 may be coupled to the upper cover part 210 by welding along a side in contact with the upper cover part 210 . Alternatively, after forming a groove inside the upper cover part 210, it is also possible to assemble it by inserting both sides of the bus bar frame part 220 into the groove, and the integrally formed method is not particularly limited. does not
[58]
In addition, the battery module 10 extends in the longitudinal direction of the battery cell assembly 100 from the upper portion of the battery cell assembly 100 and is mounted on a flexible printed circuit board configured to sense the battery cell 110 (Flexible Printed Circuit Board, FPCB) (40). As shown in FIG. 4 , in the present embodiment, the flexible printed circuit board 40 is disposed on the inside of the upper surface of the upper cover part 210 , and is then mounted on the battery cell assembly 100 to be accommodated in the battery cells and electrical power. can be connected to
[59]
As described above, by the configuration in which the bus bar frame part 220 and the upper cover part 210 are integrally formed, the conventional ICB (Internal Circuit Board) cover and the bus bar frame positioned on the upper part of the battery cell assembly are formed by a hinge structure. Structures that are bound can be excluded. That is, in the conventional combination of the hinge structure, the separation of the ICB cover and the bus bar frame occurs at the hinge part, or when the module is moved in the temporarily assembled state, there is a difficulty in responding to automation due to the flow generated in the hinge part, or passing the hinge part. There were problems such as breakage of the flexible printed circuit board. In addition, the bus bar of the bus bar frame was configured to be coupled to the electrode lead of the battery cell assembly by rotation of the bus bar frame, and in this process, it was difficult to align the bus bar frame and the electrode lead.
[60]
However, in this embodiment, since the bus bar frame part 220 and the upper cover part 210 are integrally formed as described above, the hinge structure that causes many problems as described above is excluded altogether. problems that arise can be resolved. In addition, since the method of coupling the electrode leads 120 and the bus bar 230 is simply performed by inserting the electrode leads 120 into the slits 221 formed in the bus bar frame part 220 , the manufacturing process It is also possible to combine the electrode lead 120 and the bus bar 230 with precision while simplifying.
[61]
Meanwhile, as shown in FIG. 1 , the battery module 10 may be completed by coupling the lower plate 300 to the opening of the module cover 200 in which the battery cell assembly 100 is accommodated.
[62]
Next, a method of manufacturing a battery module according to an embodiment of the present invention will be described.
[63]
First, a battery cell assembly 100 including a plurality of battery cells 110 adjacent to each other and stacked in parallel and a plurality of electrode leads 120 protruding from each of the plurality of battery cells 110 is provided.
[64]
In addition, the upper cover part 210 is provided with an upper surface and two side surfaces extending vertically from the longitudinal edge of the upper surface to both sides and including a space in which the battery cell assembly 100 is disposed.
[65]
Then, the module cover 200 is completed by integrally coupling the bus bar frame parts 220 to both ends of the upper cover part 210 in the longitudinal direction.
[66]
Then, the battery cell assembly 100 is accommodated in the module cover 200 . At this time, the electrode lead 120 of the battery cell assembly 100 is assembled to be inserted into the slit 221 of the bus bar frame part 220 . That is, by inserting the electrode lead 120 into the tongs 231 of the bus bar 230 positioned inside the slit 221 so that the tongs 231 and the electrode lead 120 come into contact with each other, the bus bar 230 and the electrode lead 120 may be electrically connected.
[67]
Then, the battery module 10 may be completed by coupling the lower plate 300 to the opening of the module cover 200 in which the battery cell assembly 100 is accommodated. The lower plate 300 may be coupled to the module cover 200 along the edge of the lower plate 300 by welding, but is not particularly limited. At this time, since the portion where the lower plate 300 is positioned becomes the lower surface of the battery module 10, the battery module 10 in its original use state can be obtained by turning over the battery module 10 again after assembly is completed. have.
[68]
According to the manufacturing method of the battery module as described above, in particular, the electrode lead 120 and the bus bar 230 are coupled to the slit 221 formed in the bus bar frame 220 rather than by rotation of the bus bar frame. Since it is made by inserting 120, the process can be performed simply and precisely.
[69]
Next, a battery module according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6 .
[70]
5 is a view illustrating a cross-section of a module cover and a battery cell assembly according to another embodiment of the present invention, and FIG. 6 is a view showing a cross-section of a battery module according to another embodiment of the present invention.
[71]
As shown in FIG. 5 , the battery cell assembly 100 according to the present embodiment includes an insulating pad 114 covering at least a portion of an outer surface thereof. That is, by accommodating the battery cell assembly 100 in the module cover 200 in a state in which the battery cell assembly 100 is covered with the insulating pad 114 , the battery cell collides with the edge of the module cover 200 . It is possible to prevent the assembly 100 from being damaged. In addition, since the battery cell assembly 100 is once more protected by the insulating pad 114, it is possible not only to obtain an insulating effect so as not to be affected by a sudden external temperature change, but also to obtain an insulating effect from other conductive parts. Therefore, it is preferable The insulating pad 114 may be a pad made of polyurethane or silicone foam, but is not particularly limited.
[72]
In addition, as shown in FIG. 5 , in the battery module 10 according to the present embodiment, the module cover 200 may further include a cell housing tape 201 attached to the inside thereof. That is, the module cover 200 in contact with the battery cell assembly 100 by attaching the cell housing tape 201 to the inside of the module cover 200 before receiving the battery cell assembly 100 in the module cover 200 . ) It is preferable to protect the inner surface and the battery cell assembly 100. As the cell housing tape 201, a tape made of a material such as an acrylic tape or a urethane foam tape may be used, but is not particularly limited.
[73]
In addition, as shown in FIG. 6 , the battery module 10 according to the present embodiment may further include a heat dissipation pad 310 positioned between the lower plate 300 and the battery cell assembly 100 . By providing the heat dissipation pad 310 , heat generated from the battery cell assembly 100 may be effectively dissipated. As the heat dissipation pad 310, a pad made of a thermally conductive resin may be used, for example, at least one of an acrylic resin, an epoxy resin, a urethane resin, an olefin resin, an EVA (ethylene vinyl acetate) resin, or a silicone resin. can do. As described above, according to this embodiment, since the heat dissipation pad 310 is provided between the lower plate 300 and the battery cell assembly 100, the process of injecting and curing the resin composition into the conventional module frame is omitted. It is possible to obtain excellent heat dissipation performance while simplifying the
[74]
Meanwhile, one or more battery modules according to an embodiment of the present invention may be packaged in a pack case to form a battery pack.
[75]
The above-described battery module and battery pack including the same may be applied to various devices. Such a device may be applied to transportation means such as an electric bicycle, an electric vehicle, and a hybrid vehicle, but the present invention is not limited thereto and is applicable to various devices that can use a battery module and a battery pack including the same, and this It belongs to the scope of the invention.
[76]
Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the
[77]
Explanation of symbols
[78]
10: battery module
[79]
100: battery cell assembly
[80]
120: electrode lead
[81]
200: module cover
[82]
210: upper cover part
[83]
220: bus bar frame unit
[84]
230: bus bar
[85]
221: slit
[86]
300: lower plate

WE CLAIMS

A battery cell assembly comprising: a battery cell assembly having a plurality of battery cells stacked adjacent to each other and a plurality of electrode leads protruding from each of the plurality of battery cells; and a module cover accommodating the battery cell assembly, wherein the module cover includes an upper cover portion exposing the plurality of electrode leads while covering an upper surface and side surfaces of the battery cell assembly, and the upper cover portion exposed by the upper cover portion and a bus bar frame part coupled to the upper cover part at positions corresponding to the plurality of electrode leads and integrally formed with the upper cover part, wherein the bus bar frame part includes a plurality of buses electrically connected to the plurality of electrode leads. A battery module comprising a bar.
[Claim 2]
The battery module of claim 1 , wherein the bus bar frame part includes a plurality of slits into which the plurality of electrode leads are inserted, and the plurality of bus bars are positioned inside the plurality of slits.
[Claim 3]
The battery module of claim 2, wherein the plurality of slits are opened toward a lower surface of the battery cell assembly exposed by the upper cover part.
[Claim 4]
The battery module of claim 1 , wherein the battery cell assembly further comprises an insulating pad surrounding the periphery of the battery cell assembly and positioned between the battery cell assembly and the upper cover part.
[Claim 5]
The battery module of claim 1, wherein the upper cover part further comprises a cell housing tape positioned between the battery cell assembly and the upper cover part.
[Claim 6]
The battery module of claim 1, wherein the module cover further includes a lower plate that covers a lower surface of the battery cell assembly exposed by the upper cover part.
[Claim 7]
The battery module of claim 6, further comprising a heat dissipation pad positioned between the lower plate and the battery cell assembly.
[Claim 8]
The method of claim 1, wherein each of the plurality of bus bars comprises a clamp portion into which the electrode lead is inserted and a fixing portion for connecting and fixing the clamp portion.
[Claim 9]
The battery module of claim 1, wherein the bus bar frame part and the upper cover part are coupled by welding.
[Claim 10]
providing a battery cell assembly including a plurality of battery cells stacked in parallel adjacent to each other and a plurality of electrode leads protruding from each of the plurality of battery cells; preparing an upper cover part including a space for accommodating the battery cell assembly including an upper surface and two side surfaces perpendicular to the upper surface; manufacturing the module cover by arranging the upper cover part and the two bus bar frame parts to cover the open both ends of the space and then integrally combining the upper cover part and the bus bar frame part; and accommodating the battery cell assembly in the space.
[Claim 11]
11 . The method of claim 10 , wherein the bus bar frame part includes a plurality of slits including openings into which the plurality of electrode leads are inserted, and accommodating the battery cell assembly in the space comprises connecting the plurality of electrode leads to the plurality of slits. Method of manufacturing a battery module comprising the step of inserting into the opening formed in the slit.
[Claim 12]
The method of claim 10 , wherein the bus bar frame part includes a plurality of bus bars positioned in the plurality of slits and electrically connected to the plurality of electrode leads.
[Claim 13]
The method of claim 10 , further comprising wrapping at least a portion of an outer surface of the battery cell assembly with an insulating pad before accommodating the battery cell assembly in the space.
[Claim 14]
The method of claim 10 , further comprising attaching a cell housing tape to an inner wall of the space of the upper cover part before accommodating the battery cell assembly in the space.
[Claim 15]
The method of claim 10, wherein the step of accommodating the battery cell assembly in the space comprises accommodating the battery cell assembly such that an upper surface of the battery cell assembly faces downward, and the upper surface of the battery cell assembly is opposite to the upper surface of the battery cell assembly. The method of manufacturing a battery module further comprising: arranging a lower plate to cover a lower surface of the battery cell assembly and coupling the lower plate with the upper cover part.
[Claim 16]
The method of claim 15 , further comprising: providing a heat dissipation pad positioned between the lower plate and a lower surface of the battery cell assembly.
[Claim 17]
The method of claim 10 , wherein the upper cover part and the bus bar frame part are coupled by welding.
[Claim 18]
A battery pack comprising at least one battery module according to any one of claims 1 to 9, and a pack case for packaging the at least one battery module.
[Claim 19]
A device comprising at least one battery pack according to claim 18 .