Title of invention: Terminal case with improved secondary battery state estimation function
Technical field
[One]
This application is an application for claiming priority for Korean Patent Application No. 10-2018-0019431 filed on February 19, 2018, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
[2]
The present invention relates to a terminal case having an improved secondary battery state estimation function, and more particularly, to a terminal case configured to effectively estimate the life or deterioration state of a secondary battery while the secondary battery is deteriorating.
Background
[3]
In recent years, as the demand for portable electronic products such as notebook computers, video cameras, portable telephones, etc. is rapidly increasing, and development of electric vehicles, energy storage batteries, robots, satellites, etc. is in earnest, high-performance secondary batteries capable of repetitive charging and discharging Research on is being actively conducted.
[4]
Currently commercialized secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries, among which lithium secondary batteries have little memory effect compared to nickel-based secondary batteries, so charging and discharging are free. The self-discharge rate is very low and the energy density is high.
[5]
These lithium secondary batteries mainly use lithium-based oxides and carbon materials as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate to which the positive electrode active material and the negative electrode active material are applied, respectively, are disposed with a separator therebetween, and an exterior material that seals and accommodates the electrode assembly together with an electrolyte solution, that is, a battery case.
[6]
In general, lithium secondary batteries can be classified into can-type secondary batteries in which an electrode assembly is embedded in a metal can, and secondary batteries in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material. In general, such secondary batteries are manufactured through a process in which an electrolyte is injected while the electrode assembly is accommodated in an exterior material, and the exterior material is sealed.
[7]
In recent years, as the application range of such secondary batteries is expanded, secondary batteries are widely used not only in small portable devices including smart phones, but also in mid- to large-sized devices such as electric vehicles and power storage devices including hybrid vehicles.
[8]
In the case of such a secondary battery, as the use period increases, performance deteriorates from the initial stage. In addition, estimating the degree of performance degradation of the secondary battery is called estimating the state of health (SOH) of the secondary battery, and the SOH of the secondary battery is an important factor in determining the replacement timing of the secondary battery.
[9]
In addition, the secondary battery may have a different degree of deterioration for each secondary battery depending on a manufacturing environment or a use environment of the secondary battery. And, in the case of a battery pack including a plurality of secondary batteries, there is a need to accurately estimate the lifespan of each of these secondary batteries according to each degree of deterioration. Typically, the BMS (Battery Management System) can efficiently operate the battery pack based on the accurate estimation of the life of each secondary battery included in the battery pack.
Detailed description of the invention
Technical challenge
[10]
The present invention is invented under the background of the prior art as described above, and relates to an improved terminal case capable of effectively estimating the life or deterioration state of the secondary battery in the process of deteriorating the secondary battery.
[11]
Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.
Means of solving the task
[12]
The terminal case according to an aspect of the present invention for achieving the above object may be connectable to a positive lead, a negative lead, a first measurement lead, and a second measurement lead provided in a secondary battery.
[13]
The terminal case may include a housing part coupled to the secondary battery; A plurality of normal mode terminals provided on a first surface of the housing unit and connectable to the positive electrode lead, the negative electrode lead, the first measurement lead, and the second measurement lead, respectively, when the first surface faces the secondary battery; And a second surface of the housing part that is different from the first surface, and when the second surface faces the secondary battery, the positive electrode lead, the negative electrode lead, the first measurement lead, and the second measurement lead can be connected to each other. It may include a plurality of measurement mode terminals.
[14]
The plurality of normal mode terminals may be provided at a position symmetrical to the positions of the plurality of measurement mode terminals provided on the second surface on the first surface.
[15]
The plurality of normal mode terminals may be provided at positions corresponding to the plurality of measurement mode terminals when the housing part is rotated along a rotation axis.
[16]
The rotation axis may include a linear axis perpendicular to both the first and second surfaces of the outer surface of the housing and passing through the centers of both sides parallel to each other.
[17]
The housing part may be coupled to the secondary battery with the first or second surface facing the secondary battery.
[18]
The terminal case according to an embodiment of the present invention includes a detachable member provided in the housing portion to surround the first and second surfaces, respectively, and surrounding the outer surface of the secondary battery and fixedly coupling the secondary battery and the housing portion. It may contain more.
[19]
The terminal case according to another embodiment of the present invention may further include a rotating member coupled to a position through which the axis of rotation of the housing part passes, on each of the outer surfaces of the housing part except for the first and second surfaces. have.
[20]
The terminal case according to another exemplary embodiment of the present invention may further include a connection member extending from the rotation member and capable of connecting the rotation member and a coupling member coupled to the secondary battery.
[21]
When the housing part and the secondary battery are coupled while the first surface faces the secondary battery, the plurality of normal mode terminals are in contact with the first measurement lead, the second measurement lead, and the positive electrode lead. It may include a positive electrode terminal, and a first charging and discharging negative terminal in contact with the negative lead.
[22]
The plurality of measurement mode terminals may include a second charging/discharging positive terminal in contact with the positive lead, and a second charging/discharging positive terminal in contact with the positive lead when the housing part and the secondary battery are coupled with the second surface facing the secondary battery. 2 A charge/discharge negative terminal, a first measurement terminal in contact with the first measurement lead, and a second measurement terminal in contact with the second measurement lead may be provided.
[23]
A battery pack according to another aspect of the present invention includes a terminal case according to the present invention.
Effects of the Invention
[24]
According to an aspect of the present invention, a terminal case including a plurality of terminals having various shapes may be provided so as to accurately measure a potential difference between two electrode plates.
[25]
In addition, as the secondary battery deteriorates, a structure capable of externally measuring the reaction non-uniformity occurring in the planar direction of the plurality of electrode plates provided in the electrode assembly is provided, thereby making it easier and more accurate to determine the degree of deterioration of the secondary battery. It has the advantage of helping you.
[26]
In particular, it is possible to selectively operate the normal mode for charging and discharging the secondary battery according to the operation mode of the terminal case, and the measurement mode for estimating the life or deterioration of the secondary battery. There is an advantage of being able to quickly estimate the degree of deterioration of a secondary battery.
[27]
In addition to the present invention may have a variety of other effects, these other effects of the present invention can be understood by the following description, can be more clearly understood by the embodiments of the present invention.
Brief description of the drawing
[28]
The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of ​​the present invention together with the detailed description of the present invention to be described later. It is limited to and should not be interpreted.
[29]
1 is an exploded perspective view schematically showing the configuration of a secondary battery according to an embodiment of the present invention.
[30]
2 is a perspective view illustrating the secondary battery shown in FIG. 1.
[31]
3 is an exploded perspective view schematically showing the configuration of an electrode assembly according to an embodiment of the present invention.
[32]
4 and 5 are perspective views schematically showing a coupling configuration between a measuring plate and an insulating member according to different embodiments of the present invention.
[33]
6 is an exploded perspective view schematically showing a configuration of an electrode assembly according to another embodiment of the present invention.
[34]
7 is a perspective view schematically showing a partial configuration of a secondary battery and a terminal case according to an embodiment of the present invention.
[35]
8 and 9 are diagrams schematically showing configurations of a plurality of normal mode terminals and a plurality of measurement mode terminals of FIG. 7.
[36]
10 and 11 schematically show a state in which a plurality of electrode leads provided in a secondary battery according to an embodiment of the present invention are connected to a plurality of normal mode terminals and a plurality of measurement mode terminals provided in a housing part, respectively. It is a drawing.
[37]
12 is a diagram schematically illustrating an arrangement relationship of a plurality of terminals provided in a terminal case according to an embodiment of the present invention.
[38]
13 is a diagram schematically illustrating a configuration in which a terminal case according to an embodiment of the present invention is coupled to a secondary battery.
[39]
14 is a diagram schematically illustrating a configuration in which a terminal case according to another embodiment of the present invention is coupled to a secondary battery.
Mode for carrying out the invention
[40]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of ​​the present invention.
[41]
Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.
[42]
In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, the detailed description thereof will be omitted.
[43]
Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components unless specifically stated to the contrary. In addition, throughout the specification, when a part is said to be "connected" to another part, it is not only "directly connected", but also "indirectly connected" with another element interposed therebetween. Include.
[44]
[45]
1 is an exploded perspective view schematically showing the configuration of a secondary battery according to an embodiment of the present invention, and FIG. 2 is a combined perspective view of the secondary battery illustrated in FIG. 1.
[46]
1 and 2, the secondary battery 1 according to the present invention includes an exterior material 200, an electrode assembly 100, a positive electrode lead 310, a negative electrode lead 320, and a first measurement lead 330. And a second measurement lead 340. The secondary battery 1 may be a pouch type.
[47]
The exterior material 200 has a concave inner space, and the electrode assembly 100 and an electrolyte may be accommodated in the inner space.
[48]
In particular, the exterior material 200 may be composed of an upper cover 210 and a lower cover 220, and in this case, the concave inner space is the upper cover 210 and the lower cover 220 as shown in FIG. Can be formed on all.
[49]
The exterior material 200 may be configured in a form in which outer peripheral portions of the upper cover 210 and the lower cover 220 are sealed. That is, the upper cover 210 and the lower cover 220 each have a sealing portion (S) on the rim of the inner space, and the sealing portion (S) is sealed by a method such as heat fusion, so that the interior of the exterior material 200 The space can be closed.
[50]
The electrode assembly 100 includes a separator, a plurality of first electrode plates 110, a plurality of second electrode plates 120, a plurality of first electrode tabs 111, a plurality of second electrode tabs 121, and It may include a 1 measuring plate, a second measuring plate, a first measuring tab and a second measuring tab. Hereinafter, for convenience of description, it is assumed that the first electrode plate is a positive electrode plate and the second electrode plate is a negative electrode plate. In this case, the first electrode tab may be referred to as an anode tab, and the second electrode tab may be referred to as a negative electrode tab. Of course, it is not limited that the first electrode plate is a negative plate and the second electrode plate is a positive plate.
[51]
The configuration of the electrode assembly 100 will be described in detail with reference to FIG. 3. 3 is an exploded perspective view schematically showing the configuration of an electrode assembly according to an embodiment of the present invention. However, for convenience of description, the separator is not shown in FIG. 3. Referring to FIG. 3, the electrode assembly 100 includes a plurality of electrode plates 110, 120, 130, and 140 with a separator therebetween. In particular, a plurality of electrode plates are accommodated in the inner space of the exterior material 200 in a stacked form with a separator therebetween. More specifically, the electrode assembly 100 may be configured in a form in which a plurality of positive electrode plates 110 and a plurality of negative electrode plates 120 are stacked in the vertical direction.
[52]
Here, the electrode plate is composed of a positive plate 110 or a negative plate 120, and the electrode assembly 100 is stacked so that the positive plate 110 and the negative plate 120 face each other with a separator interposed therebetween. It can be configured in a form. That is, the electrode assembly 100 may be configured in a form in which the positive electrode plate 110 and the negative electrode plate 120 are alternately stacked with a separator interposed therebetween, and the positive electrode plate 110 and the negative electrode plate 120 are disposed to be spaced apart a predetermined distance from each other. do. In addition, the positive electrode plate 110 and the negative electrode plate 120 are formed in a structure in which an active material slurry is applied to a current collector, and the slurry is usually formed by stirring a granular active material, an auxiliary conductor, a binder, and a plasticizer while a solvent is added. Can be.
[53]
The positive electrode tab 111 may extend from a plurality of positive plates 110, and the negative electrode tab 121 may extend from a plurality of negative plates 120. More specifically, the positive electrode tab 111 may be provided on the non-coated portion of the positive electrode plate 110 to which the positive electrode active material is not applied, and the negative electrode tab 121 is provided on the non-coated portion of the negative plate 120 to which the negative active material is not applied. Can be. For example, the positive electrode tab 111 and the negative electrode tab 121 are formed to protrude from the electrode plate, and the electrode plate is cut out or a metal plate of the same or different material is attached to the electrode plate. Can be formed.
[54]
The first measurement plate 130 and the second measurement plate 140 are configured to have the same polarity. For example, both the first measurement plate 130 and the second measurement plate 140 may be plates having a positive or negative polarity. More specifically, the first measurement plate 130 and the second measurement plate 140 are configured in a form in which a positive electrode active material is coated on the surface of an aluminum current collector, or a negative active material is applied on the surface of an aluminum current collector. Can be.
[55]
The first measurement plate 130 and the second measurement plate 140 may be provided in place of at least one of the positive electrode plate 110 and the negative electrode plate 120. More specifically, the one positive electrode plate 110 or negative electrode plate 120 in place of at least one positive electrode plate 110 or negative electrode plate 120 among a plurality of positive electrode plates 110 and negative electrode plates 120 that are alternately stacked in the vertical direction. The first measuring plate 130 and the second measuring plate 140 may be provided at the position of.
[56]
For example, the first measurement plate 130 and the second measurement plate 140 may be provided at a position of the one positive electrode plate 110 in place of the one positive electrode plate 110. In this case, both the first measurement plate 130 and the second measurement plate 140 may be plates having a positive polarity. Likewise, the first measurement plate 130 and the second measurement plate 140 may be provided at the position of the one negative electrode plate 120 in place of the one negative electrode plate 120. In this case, both the first measurement plate 130 and the second measurement plate 140 may be plates having a negative polarity.
[57]
The first measuring tab 131 is electrically connected to the first measuring plate 130, and the second measuring tab 141 is electrically connected to the second measuring plate 140. Here, the first measurement tab 131 may extend from the first measurement plate 130, and the second measurement tab 141 may extend from the second measurement plate 140. More specifically, the first measurement tab 131 is provided on the uncoated portion of the first measurement plate 130 to which the positive electrode active material is not applied, and 2 Measurement tabs 141 may be provided. For example, the first measurement tab 131 and the second measurement tab 141 may be formed to protrude from the first measurement plate 130 and the second measurement plate 140. At this time, the first measuring tab 131 and the second measuring tab 141 are in a form in which the first measuring plate 130 and the second measuring plate 140 are cut off, or the first measuring plate 130 and the second measuring plate It may be formed in a form in which a metal plate of the same or different material is attached to the plate 140.
[58]
The positive electrode lead 310 is configured such that one end is in electrical contact with the positive electrode tab 111 and the other end is exposed to the outside of the exterior material 200. In addition, a portion of the anode lead 310 is interposed in the exterior material 200. More specifically, a plurality of positive electrode tabs 111 formed to protrude from each of the plurality of positive electrode plates 110 may be connected to the positive electrode lead 310 while in contact with each other. In this case, the connection between the plurality of positive electrode tabs 111 and/or the connection between the positive electrode tab 111 and the positive electrode lead 310 may be performed by welding or the like. For example, as shown in FIG. 1, the anode lead 310 may be directly connected to a plurality of anode tabs 111 formed to protrude from the plurality of anode plates 110.
[59]
In addition, the anode lead 310 may be interposed between the upper cover 210 and the lower cover 220 so that a part of the anode lead 310 may be located in the inner space of the exterior material 200. In addition, the remaining portion of the anode lead 310 may be exposed to the outside of the exterior material 200. For example, as shown in FIG. 2, the anode lead 310 may be formed to protrude in the outer direction of the exterior material 200, so that a part of the anode lead 310 may be exposed to the outside of the exterior material 200.
[60]
One end of the negative lead 320 is in electrical contact with the negative electrode tab 121 and the other end of the negative lead 320 is configured to be exposed to the outside of the exterior material 200. In addition, a portion of the cathode lead 320 is interposed in the exterior material 200. More specifically, a plurality of negative electrode tabs 121 formed to protrude from each of the plurality of negative electrode plates 120 may be connected to the negative electrode lead 320 in contact with each other. In this case, the connection between the plurality of negative electrode tabs 121 and/or the connection between the negative electrode tab 121 and the negative electrode lead 320 may be performed by welding or the like. For example, as shown in FIG. 1, the negative electrode lead 320 may be directly connected to a plurality of negative electrode tabs 121 formed to protrude from the plurality of negative electrode plates 120.
[61]
In addition, the cathode lead 320 may be interposed between the upper cover 210 and the lower cover 220 so that a part of the cathode lead 320 may be located in the inner space of the exterior material 200. In addition, the rest of the cathode lead 320 may be exposed to the outside of the exterior material 200. For example, as shown in FIG. 2, the cathode lead 320 is formed to protrude in the outer direction of the exterior material 200, so that a part of the cathode lead 320 may be exposed to the outside of the exterior material 200.
[62]
One end of the first measurement lead 330 is in electrical contact with the first measurement tab 131, and the other end of the first measurement lead 330 is exposed to the outside of the exterior material 200. In addition, a portion of the first measurement lead 330 is interposed in the exterior material 200. More specifically, the first measurement tab 131 formed to protrude from the first measurement plate 130 may be connected to the first measurement lead 330. In this case, the connection between the first measurement tab 131 and the first measurement lead 330 may be performed by welding or the like. For example, as shown in FIG. 1, the first measurement lead 330 may be directly connected to the first measurement tab 131 formed to protrude from the first measurement plate 130.
[63]
In addition, the first measurement lead 330 may be interposed between the upper cover 210 and the lower cover 220 so that a part of the first measurement lead 330 may be located in the inner space of the exterior material 200. In addition, the rest of the first measurement lead 330 may be exposed to the outside of the exterior material 200. For example, as shown in FIG. 2, the first measurement lead 330 is formed to protrude in the outer direction of the exterior material 200, so that a part of the first measurement lead 330 may be exposed to the outside of the exterior material 200.
[64]
One end of the second measurement lead 340 is configured to be in electrical contact with the second measurement tab 141, and the other end of the second measurement lead 340 is exposed to the outside of the exterior material 200. In addition, a part of the second measurement lead 340 is interposed in the exterior material 200. More specifically, the second measurement tab 141 protruding from the second measurement plate 140 may be connected to the second measurement lead 340. In this case, the connection between the second measurement tab 141 and the second measurement lead 340 may be performed by welding or the like. For example, as shown in FIG. 1, the second measurement lead 340 may be directly connected to the second measurement tab 141 formed to protrude from the second measurement plate 140.
[65]
In addition, the second measurement lead 340 may be interposed between the upper cover 210 and the lower cover 220 so that a part of the second measurement lead 340 may be located in the inner space of the exterior material 200. In addition, the rest of the second measurement lead 340 may be exposed to the outside of the exterior material 200. For example, as shown in FIG. 2, the second measurement lead 340 is formed to protrude in the outer direction of the exterior material 200, so that a part of the exterior material 200 may be exposed to the outside.
[66]
In the present invention, the state of the secondary battery may be estimated using the first measurement lead 330 and the second measurement lead 340. In particular, according to the present invention, a lifespan or a deterioration state of the secondary battery may be estimated by using a potential difference between the first measurement lead 330 and the second measurement lead 340. For example, when the secondary battery 1 deteriorates, a potential difference occurs between the first measurement lead 330 and the second measurement lead 340, and the life of the secondary battery may be estimated according to the degree of the generated potential difference.
[67]
The first measurement tab 131 may be configured to be integrated with the first measurement lead 330 in the form of a single plate. In addition, the second measurement tab 141 may be configured to be integrated with the second measurement lead 340 in the form of a single plate.
[68]
In addition, the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 may be in the same direction from the exterior material 200. For example, as shown in FIGS. 1 and 2, the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 are + in FIGS. 1 and 2. It may protrude in the y-axis direction.
[69]
According to this configuration of the present invention, it is possible to easily measure voltages for the first measurement lead and the second measurement lead. In particular, the first measurement lead 330 and the second measurement lead 340 may easily contact a measurement terminal configured to be connected to the first measurement lead 330 and the second measurement lead 340.
[70]
In addition, the first measurement tab 131 and the second measurement tab 141 are between the positive electrode tab 111 and the negative electrode tab 121, in a horizontal direction with the positions of the positive electrode tab 111 and the negative electrode tab 121 It can be formed in different locations. That is, the first measurement lead 330 and the second measurement lead 340 may be formed to be parallel to the positive lead 310 and the negative lead 320. For example, as shown in FIG. 1, the first measurement tab 131 and the second measurement tab 141 are between the positive electrode tab 111 and the negative electrode tab 121, and the positive electrode tab 111 and the negative electrode tab It may be formed at a position spaced apart from 121 by a predetermined distance in the x-axis or x- and z-axis directions. In addition, the anode lead 310, the cathode lead 320, the first measurement lead 330, and the second measurement lead 340 are formed in parallel, so that the anode lead 310 and the cathode lead protruding out of the exterior material 200 are formed. 320), portions of the first measurement lead 330 and the second measurement lead 340 may be parallel. Specifically, the anode lead 310, the cathode lead 320, the first measurement lead 330, and the second measurement lead 340 are located on the same virtual plane, so that each longitudinal direction can face the same direction. have. For example, referring to FIG. 2, the anode lead 310, the cathode lead 320, the first measurement lead 330, and the second measurement lead 340 are located on the same plane, and the top surfaces of each are parallel, Each longitudinal direction may equally face the +y direction. According to this configuration of the present invention, charging and discharging of the secondary battery and estimation of the state of the secondary battery can be easily performed. In particular, according to this configuration of the present invention,
[71]
[72]
Referring to FIG. 3, the electrode assembly 100 according to the present invention may be configured in a form in which a plurality of electrode plates are stacked in a vertical direction. In particular, the first measurement plate 130 and the second measurement plate 140 may be provided in place of at least one of the plurality of positive electrode plates 110 and negative electrode plates 120. More specifically, the first measurement plate 130 and the second measurement plate 140 may be stacked on the same layer in the electrode assembly 100 in which a plurality of electrode plates are stacked.
[73]
For example, as shown in FIG. 3, the first measuring plate 130 and the second measuring plate 140 may be provided at a position of the one positive plate 110 in place of one positive plate 110. have. That is, the first measurement plate 130 and the second measurement plate 140 may be provided on the same layer between the two negative electrode plates 120. Further, although not shown in the drawings, the first measurement plate 130 and the second measurement plate 140 may be provided at a position of the one negative electrode plate 120 in place of the one negative electrode plate 120. That is, the first measurement plate 130 and the second measurement plate 140 may be provided on the same layer between the two positive electrode plates 110. According to this configuration of the present invention, since it is possible to measure the potential difference due to irregularities inside the interest battery, it is possible to more accurately estimate the state of the secondary battery.
[74]
[75]
The electrode assembly 100 according to the present invention may further include an insulating member 150. This will be described in more detail with reference to FIGS. 4 and 5. 4 and 5 are perspective views schematically showing a coupling configuration between a measuring plate and an insulating member according to different embodiments of the present invention.
[76]
4 and 5, the insulating member 150 may fix the first measurement plate 130 and the second measurement plate 140. More specifically, the insulating member 150 includes the first measuring plate 130 and the second measuring plate 130 so that the first measuring plate 130 and the second measuring plate 140 can be positioned side by side on one layer among a plurality of electrode plates. The measuring plate 140 may be fixed.
[77]
For example, as shown in FIG. 4, the insulating member 150 is made of an insulating material, and may be implemented as a plate having the same size as other electrode plates provided in the electrode assembly 100. In addition, an inner space 151 having the same size as the area of ​​the first and second measurement plates 130 and 140 may be formed in the insulating member 150. Here, the inner space 151 may be an empty space having the same size as the area of ​​the first measurement plate 130 and the second measurement plate 140 and open at the top and the bottom and penetrated in the vertical direction. In addition, the first measuring plate 130 and the second measuring plate 140 may be provided in the inner space 151. Here, the first measuring plate 130 and the second measuring plate 140 may be fitted and fixed in the inner space 151 of the insulating member 150 in the direction a of FIG. 4. In this case, the inner space into which the first measuring plate 130 is inserted and the inner space into which the second measuring plate 140 is inserted may be configured to be spaced apart by a predetermined distance in the first direction. Here, the first direction may include the x-axis direction shown in FIGS. 2 and 3. Accordingly, the first measuring plate 130 and the second measuring plate 140 are coupled to the insulating member 150 so that the insulating state can be maintained. As another example, as shown in FIG. 5, the insulating member 150 is made of an insulating material, and may be positioned between the first measuring plate 130 and the second measuring plate 140. For example, the insulating member 150 may be formed in the form of a rod extending in the longitudinal direction of the first measuring plate 130 and the second measuring plate 140. In addition, the insulating member 150 is in a horizontal direction, that is, in a state in which the wide surface is laid to face the top and the bottom, It is interposed between the first measuring plate 130 and the second measuring plate 140 arranged parallel to each other in the first direction, so that the space between the first measuring plate 130 and the second measuring plate 140 can be separated. have. The first measurement plate 130 and the second measurement plate 140 may be electrically insulated through the insulating member 150.
[78]
In particular, the insulating member 150 may be configured in a form in which the first measuring plate 130 and the second measuring plate 140 can be fitted to the insulating member 150. More specifically, the insulating member 150 may include an inner groove 152. The inner groove 152 is the length of the first measuring plate 130 and the second measuring plate 140 so that the first measuring plate 130 and the second measuring plate 140 can be bound to the inner groove 152 It can be formed long in the direction. Here, the first measuring plate 130 and the second measuring plate 140 may be fitted and fixed in the inner groove 152 of the insulating member 150 in the direction a of FIG. 5.
[79]
In addition, the insulating member 150 may be configured to electrically insulate between the first measuring plate 130 and the second measuring plate 140. More specifically, the insulating member 150 includes the first measuring plate 130 and the second measuring plate 140 so that the distance between the first measuring plate 130 and the second measuring plate 140 can be maintained by a predetermined distance. Can be separated. In addition, the insulating member 150 may be made of an insulating material and configured so that the first measuring plate 130 and the second measuring plate 140 are not in contact. For example, as shown in FIGS. 4 and 5, the first measurement plate 130 and the second measurement plate 140 may be spaced apart from each other by the insulating member 150 so as not to contact each other.
[80]
[81]
6 is an exploded perspective view schematically showing a configuration of an electrode assembly according to another embodiment of the present invention. However, for convenience of explanation, the separator is not shown in FIG. 6 as well. In addition, in the present embodiment, a detailed description of portions to which the description of the previous embodiment can be similarly applied will be omitted, and portions with differences will be mainly described.
[82]
Referring to FIG. 6, the electrode assembly 100 according to the present invention may be configured in a form in which a plurality of electrode plates 110, 120, 130, and 140 are stacked in a vertical direction. In particular, the first measurement plate 130 and the second measurement plate 140 are provided at the positions of the two electrode plates instead of two electrode plates having the same polarity among the plurality of positive electrode plates 110 and negative plate 120. Can be. That is, the first measurement plate 130 is provided in place of any one of the plurality of positive electrode plates 110 and the negative electrode plate 120, and the second measurement plate 140 includes a plurality of positive plates 110 and negative plates. Among 120, it may be provided in place of another electrode plate having the same polarity as the specific electrode plate. The first measurement plate 130 and the second measurement plate 140 may be configured to be stacked on different layers.
[83]
For example, as shown in FIG. 6, each of the first measurement plate 130 and the second measurement plate 140 is provided at the positions of the two positive plates 110 instead of the two positive plates 110 Can be. That is, the first measuring plate 130 is provided at a position of the first positive plate among the plurality of positive plates 110, and the second measuring plate 140 is a second plate not identical to the first positive plate among the plurality of positive plates 110. It may be provided at the position of the positive plate. Therefore, the first measurement plate 130 and the second measurement plate 140 are provided between the negative electrode plate 120, respectively, and the first measurement plate 130 and the second measurement plate 140 may be provided on different layers. have.
[84]
In addition, although not shown in the drawings, the first measurement plate 130 and the second measurement plate 140 may be provided at positions of the two negative plates 120 instead of the two negative plates 120. That is, the first measuring plate 130 is provided at a position of the first negative plate among the plurality of negative plates 120, and the second measuring plate 140 is a second plate not identical to the first negative plate among the plurality of negative plates 120. It may be provided at the position of the negative plate. Therefore, the first measurement plate 130 and the second measurement plate 140 are provided between the positive electrode plate 110, respectively, and the first measurement plate 130 and the second measurement plate 140 may be provided on different layers. have.
[85]
According to this configuration of the present invention, the first measurement plate and the second measurement plate are not included in any one of the positive plate or the negative plate to be separated by a predetermined distance, but two positive plates selected from a plurality of positive plates or two selected from a plurality of negative plates are Since the secondary battery according to the present invention can be manufactured by replacing the negative electrode plate with the first measurement plate and the second measurement plate, manufacturing of the secondary battery can be made easier.
[86]
7 is a perspective view schematically showing a partial configuration of a secondary battery and a terminal case according to an embodiment of the present invention. 8 and 9 are diagrams schematically showing configurations of a plurality of normal mode terminals and a plurality of measurement mode terminals of FIG. 7.
[87]
The terminal case 2 according to the present invention may be coupled to the secondary battery 1 in order to estimate the deterioration state of the secondary battery 1. In addition, the terminal case 2 according to the present invention is used for estimating the state of the secondary battery 1 and may be used to estimate the life of the secondary battery 1. In particular, the terminal case 2 can be connected to the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 provided in the secondary battery 1, It can be applied to a device for estimating the life of the secondary battery 1.
[88]
The secondary battery 1 according to the present invention may have an outer surface taped. For example, as illustrated in FIG. 7, the secondary battery 1 may have a rectangular parallelepiped shape by taping an outer surface. And the secondary battery 1 may be provided with a plurality of leads on one surface. For example, as shown in FIG. 7, the secondary battery 1 has a positive electrode lead 310, a negative electrode lead 320, a first measurement lead 330, and a 2 measurement leads 340 may be provided.
[89]
The anode lead 310, the cathode lead 320, the first measurement lead 330, and the second measurement lead 340 according to the present invention may be formed to be bent upward or downward. More specifically, the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 are bent upward or downward so that a flat surface faces the outside of the secondary battery 1. It can be configured to face. For example, as shown in FIG. 7, the positive lead 310, the negative lead 320, the first measurement lead 330 and the second measurement lead 340 are in the +z axis direction or the -z axis direction. It is bent to, the flat surface may be configured to face the +y axis direction.
[90]
The heights of the positive electrode lead 310, the negative electrode lead 320, the first measurement lead 330 and the second measurement lead 340 may be lower than the height of one surface of the secondary battery 1. Specifically, a portion bent in each of the positive lead 310, the negative lead 320, the first measurement lead 330 and the second measurement lead 340 may be configured to have a height corresponding to half the height of the one surface. I can. For example, as shown in FIG. 7, the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 are formed from the lower surface of the secondary battery 1. It may be formed in a form bent upward (in the z-axis direction) by a predetermined height h. According to this configuration of the present invention, a plurality of leads can easily contact a measurement terminal or the like.
[91]
The terminal case 2 according to the present invention includes a housing part 400, a plurality of normal mode terminals, and a plurality of measurement mode terminals.
[92]
The housing part 400 may be coupled to one surface of the secondary battery 1 provided with the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340. have. For example, as shown in FIG. 7, the housing part 400 may be coupled to one side of the secondary battery 1 in a direction b of FIG. 7.
[93]
The housing part 400 may be configured to be coupled to the secondary battery 1 with a first surface of the housing part 400 or a second surface of the housing part 400 facing the secondary battery 1. . The housing 400 may be coupled to one side of the secondary battery 1 by having a coupling portion. For example, although not shown in the drawing, the housing part 400 includes a coupling part protruding from the housing part 400 in the direction of the secondary battery 1 on a surface in the -y-axis direction of FIG. 7, The secondary battery 1 may have a predetermined groove formed to fix the coupling portion. In addition, when the housing part 400 approaches the secondary battery 1 in the -y-axis direction of FIG. 7, the coupling part may be fixed to the groove.
[94]
The plurality of normal mode terminals may include an electrically conductive material such as metal. And, these terminals may be configured in a plate shape. In addition, a plurality of normal mode terminals may be provided on an inner surface configured to face the electrode lead side of the secondary battery 1. That is, a plurality of normal mode terminals may be provided on the first surface of the housing unit 400 configured to face the secondary battery 1. Here, the first surface may be referred to as one surface configured to be coupled to the secondary battery 1 in the housing part 400.
[95]
In addition, the plurality of normal mode terminals may be configured to be connected to the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340, respectively. Specifically, the plurality of normal mode terminals may selectively contact the positive lead 310, the negative lead 320, the first measurement lead 330 and the second measurement lead 340. In particular, the plurality of normal mode terminals according to the present invention include a positive electrode lead 310, a negative electrode lead 320, and a first measurement lead 330 provided in the secondary battery 1 when charging or discharging the secondary battery 1. ), and the second measurement lead 340.
[96]
The plurality of normal mode terminals may be provided so as to be positioned at a predetermined height h from the lower surface of the housing unit 400 in the upper direction (in the +z-axis direction). Through this configuration, a plurality of normal mode terminals can accurately contact the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 provided in the secondary battery 1. I can.
[97]
The plurality of measurement mode terminals may be made of an electrically conductive material such as metal. In addition, the plurality of measurement mode terminals may be formed in a plate shape. In addition, the plurality of measurement mode terminals are configured to face the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 of the secondary battery 1 in an outward direction. It may be provided on the outer surface provided as. That is, a plurality of measurement mode terminals may be provided on a second surface of the housing unit 400 different from the first surface.
[98]
The plurality of normal mode terminals may be provided at positions symmetrical with the plurality of measurement mode terminals provided on the first surface and the second surface. That is, when the housing part 400 is rotated, the plurality of normal mode terminals may be provided at positions on the first surface that are symmetrical with the positions of the plurality of measurement mode terminals.
[99]
For example, a plurality of measurement mode terminals may be provided on a second surface of the housing unit 400 located in the +y-axis direction of FIG. 7 from a first surface provided with a plurality of normal mode terminals. Referring to FIG. 7, a first surface provided with a plurality of normal mode terminals and a second surface provided with a plurality of measurement mode terminals may be parallel to each other. However, the first surface provided with the plurality of normal mode terminals and the second surface provided with the plurality of measurement mode terminals suffice as long as the outer surfaces of the housing part 400 are different from each other, and are not limited only to planes parallel to each other.
[100]
In addition, the plurality of measurement mode terminals may be connected by contacting the positive lead 310, the negative lead 320, the first measurement lead 330 and the second measurement lead 340.
[101]
A plurality of measurement mode terminals may be provided on the second surface of the housing unit 400 and may be provided to be positioned at a predetermined height h from the upper surface of the housing unit 400 in a downward direction (in the -z axis direction) have. Accordingly, the plurality of measurement mode terminals may accurately contact the plurality of electrode leads provided in the secondary battery 1.
[102]
A plurality of normal mode terminals and a plurality of measurement mode terminals may be provided on the first surface of the housing unit 400 and the second surface of the housing unit 400 so as to be symmetrical with each other in the vertical direction. For example, as shown in FIG. 7, when the first surface of the housing unit 400 faces the secondary battery 1, a plurality of normal mode terminals are located at the lower end of the first surface, and a plurality of measurement mode terminals May be located on the upper end of the second side. Conversely, when the housing part 400 is rotated so that the second side faces the secondary battery 1, a plurality of measurement mode terminals are located at the lower end of the second surface, and a plurality of normal mode terminals are located at the upper end of the first surface. can do.
[103]
The plurality of normal mode terminals according to an embodiment of the present invention may include a first charge/discharge positive terminal 511 and a first charge/discharge negative terminal 512. In addition, the first charge/discharge positive terminal 511 and the first charge/discharge negative terminal 512 may be made of an electrically conductive material such as metal.
[104]
The first charge/discharge positive terminal 511 may contact all of the first measurement lead 330, the second measurement lead 340, and the positive electrode lead 310. In addition, the first charge/discharge negative terminal 512 may be in contact with the negative lead 320.
[105]
For example, as shown in FIGS. 7 and 8, the first charge/discharge positive terminal 511 and the first charge/discharge negative terminal 512 have a positive electrode lead bent toward the outer surface of the secondary battery 1 ( 310), the negative electrode lead 320, the first measurement lead 330, and the second measurement lead 340 may be provided at positions facing each other to contact the corresponding leads, respectively.
[106]
The plurality of measurement mode terminals according to an embodiment of the present invention include a second charge/discharge positive terminal 610, a second charge/discharge negative terminal 620, a first measurement terminal 630, and a second measurement terminal 640. Can include. In addition, the second charging/discharging positive terminal 610, the second charging/discharging negative terminal 620, the first measuring terminal 630 and the second measuring terminal 640 may be made of an electrically conductive material such as metal.
[107]
The second charge/discharge positive terminal 610 may contact the positive lead 310, and the second charge/discharge negative terminal 620 may contact the negative lead 320. Further, the first measurement terminal 630 may contact the first measurement lead 330, and the second measurement terminal 640 may contact the second measurement lead 340.
[108]
For example, as shown in FIGS. 7 and 9, a second charge/discharge positive terminal 610, a second charge/discharge negative terminal 620, a first measurement terminal 630 and a second measurement terminal 640 May contact the corresponding electrode lead of the positive lead 310, the negative lead 320, the first measurement lead 330, and the second measurement lead 340 of the secondary battery 1, respectively.
[109]
[110]
10 and 11 schematically show a state in which a plurality of electrode leads provided in a secondary battery according to an embodiment of the present invention are connected to a plurality of normal mode terminals and a plurality of measurement mode terminals provided in a housing part, respectively. It is a drawing.
[111]
First, referring to FIG. 10, a plurality of normal mode terminals according to the present invention include a positive electrode lead 310, a negative electrode lead 320, a first measurement lead 330, and a second measurement lead provided in the secondary battery 1. Can be contacted with 340. In this case, the housing part 400 may be coupled to the secondary battery 1 with the first surface of the housing part 400 facing the secondary battery 1.
[112]
The first charge/discharge positive electrode terminal 511 may be configured to contact the positive electrode lead 310 of the secondary battery 1. In addition, when the first measurement lead 330 and the second measurement lead 340 are leads having a positive polarity, the first charging/discharging positive terminal 511 has a first measurement lead 330 and a second measurement lead ( 340). In addition, the first charge/discharge positive electrode terminal 511 may be formed to be long in the width direction so as to contact all of the first measurement lead 330, the second measurement lead 340, and the positive lead 310. For example, as shown in FIG. 10, the first charge/discharge positive terminal 511 may be formed to be long in the x-axis direction. Through this configuration, when the secondary battery 1 is charged or discharged, the first charge/discharge positive electrode terminal 511 includes a plurality of first electrode plates 110 having positive polarity included in the secondary battery 1 , It may be electrically connected to the first measuring plate 130 and the second measuring plate 140.
[113]
The first charge/discharge negative terminal 512 may be in electrical contact with the negative lead 320 of the secondary battery 1. To this end, the first charge/discharge negative terminal 512 may be provided at a position facing the negative lead 320 when the housing part 400 is coupled to the secondary battery 1. For example, as shown in FIG. 10, the first charge/discharge negative terminal 512 may be connected to the negative lead 320 in a one-to-one manner. That is, when the secondary battery 1 is charged or discharged, the first charge/discharge negative terminal 512 may be electrically connected to the plurality of negative plates 120 included in the secondary battery 1. For example, as shown in FIG. 10, the first charge/discharge negative terminal 512 is provided at a position spaced apart from the first charge/discharge positive terminal 511 by a predetermined distance in the +x-axis direction, and the negative lead 320 ) Can be faced.
[114]
On the other hand, although not shown in the drawing, when the first charging and discharging negative terminal 512 is a lead having a negative polarity of the first measurement lead 330 and the second measurement lead 340, the first measurement lead ( 330 and the second measurement lead 340 may be configured to be in electrical contact. In this case, the first charge/discharge negative terminal 512 may be formed to be elongated in the width direction (in the x-axis direction).
[115]
Referring to FIG. 11, a plurality of measurement mode terminals according to the present invention may be in contact with a plurality of electrode leads provided in the secondary battery 1. In this case, the housing part 400 may be coupled to the secondary battery 1 with the second surface of the housing part 400 facing the secondary battery 1.
[116]
When the housing part 400 is coupled to the secondary battery 1 with the second surface of the housing part 400 facing the secondary battery 1, the second charging/discharging positive terminal 610 is a positive lead 310 It may be provided in a position facing the. The second charge/discharge positive terminal 610 may be electrically connected to the positive lead 310. Specifically, the second charge/discharge positive terminal 610 may be connected to the positive lead 310 in a one-to-one manner, as shown in FIG. 11.
[117]
When the housing part 400 is coupled to the secondary battery 1 with the second surface of the housing part 400 facing the secondary battery 1, the second charging/discharging negative terminal 620 is a negative lead 320 It may be provided in a position facing the. The second charging/discharging negative terminal 620 may be electrically connected to the negative lead 320. Specifically, the second charging/discharging negative terminal 620 may be connected to the negative lead 320 in a one-to-one manner, as shown in FIG. 11.
[118]
When the housing part 400 is coupled to the secondary battery 1 with the second surface of the housing part 400 facing the secondary battery 1, the first measurement terminal 630 is a first measurement lead 330 It may be provided in a position facing the. The first measurement terminal 630 may be electrically connected to the first measurement lead 330. More specifically, the first measurement terminal 630 may be connected to the first measurement lead 330 in a one-to-one manner, as shown in FIG. 11.
[119]
When the housing part 400 is coupled to the secondary battery 1 with the second surface of the housing part 400 facing the secondary battery 1, the second measurement terminal 640 is a second measurement lead 340 It may be provided in a position facing the. The second measurement terminal 640 may be electrically connected to the second measurement lead 340. Specifically, as shown in FIG. 11, the second measurement terminal 640 may be connected to the second measurement lead 340 in a one-to-one manner.
[120]
The first measurement terminal 630 may be electrically connected to the first measurement plate 130 provided in the electrode assembly 100 through the first measurement lead 330, and the second measurement terminal 640 is a second measurement It may be electrically connected to the second measurement plate 140 provided in the electrode assembly 100 through the lead 340.
[121]
[122]
12 is a diagram schematically illustrating an arrangement relationship of a plurality of terminals provided in a terminal case according to an embodiment of the present invention.
[123]
Referring to FIG. 12, the terminal case 2 according to the present invention includes a first charge/discharge positive terminal 511, a first charge/discharge negative terminal 512, and a fourth charge/discharge terminal on the first surface of the housing unit 400. A discharge positive terminal 521, a fourth charging and discharging negative terminal 522, a third measuring terminal 523, and a fourth measuring terminal 524 may be included. In addition, the terminal case 2 includes a second charging/discharging positive terminal 610, a second charging/discharging negative terminal 620, a first measuring terminal 630, and a second measuring terminal on the second surface of the housing part 400. 640, a third charging/discharging positive terminal 650 and a third charging/discharging negative terminal 660 may be included. Here, the first surface of the housing part 400 may refer to one surface of the housing part 400 provided in the -y-axis direction of FIG. 12. Further, the second surface of the housing part 400 may refer to one surface of the housing part 400 provided in the +y-axis direction of FIG. 12.
[124]
A plurality of terminals provided on each of the first and second surfaces of the housing unit 400 according to the present invention may be connected to each other. For example, the terminal case 2 may include an electrical circuit inside the housing unit 400 so that a plurality of terminals are electrically connected to each other.
[125]
First, the first charging/discharging positive terminal 511 provided on the first surface of the housing part 400 is connected to the third charging/discharging positive terminal 650 provided on the second surface of the housing part 400, and 1 The charge/discharge negative terminal 512 may be connected to the third charge/discharge negative terminal 660 provided on the second surface of the housing part 400.
[126]
For example, when the first surface of the housing unit 400 is coupled to the secondary battery 1, the first charging/discharging positive terminal 511 and the first charging/discharging negative terminal 512 are electrode leads of the secondary battery 1 Can be contacted. In addition, the third charging/discharging positive terminal 650 and the third charging/discharging negative terminal 660 may exchange charge/discharge current through the first charging/discharging positive terminal 511 and the first charging/discharging negative terminal 512. have.
[127]
Next, a second charge/discharge positive terminal 610, a second charge/discharge negative terminal 620, a first measurement terminal 630 and a second measurement terminal 640 provided on the second surface of the housing part 400 Is a fourth charging and discharging positive terminal 521, a fourth charging and discharging negative terminal 522, a third measuring terminal 523 and a fourth measuring terminal 524 provided on the first surface of the housing unit 400, respectively. Can be connected. For example, as shown in FIG. 12, the second charge/discharge positive terminal 610 may be connected to the fourth charge/discharge positive terminal 521 in one-to-one, and the second charge/discharge negative terminal 620 is a fourth It may be connected to the charge/discharge negative terminal 522 in a one-to-one manner. In addition, the first measurement terminal 630 may be connected to the third measurement terminal 523 in a one-to-one manner, and the second measurement terminal 640 may be connected to the fourth measurement terminal 524 in a one-to-one manner.
[128]
Through this configuration, when the second surface of the housing unit 400 is coupled to the secondary battery 1, the second charging/discharging positive terminal 610 is in contact with the positive lead 310 of the secondary battery 1 , The second charging/discharging negative terminal 620 may contact the negative lead 320 of the secondary battery 1. In addition, the first measurement terminal 630 is in contact with the first measurement lead 330 of the secondary battery 1, and the second measurement terminal 640 is in contact with the second measurement lead 340 of the secondary battery 1 Can be.
[129]
In this case, the fourth charge/discharge positive terminal 521 is electrically connected to the positive lead 310 through the second charge/discharge positive terminal 610, and the fourth charge/discharge negative terminal 522 is a second charge/discharge negative electrode. It may be electrically connected to the negative lead 320 through the terminal 620. In addition, the third measurement terminal 523 is electrically connected to the first measurement lead 330 through the first measurement terminal 630, and the fourth measurement terminal 524 is controlled through the second measurement terminal 640. 2 It may be electrically connected to the measurement lead 340. In this case, the third measurement terminal 523 and the fourth measurement terminal 524 may be applied with the same voltage as the first measurement plate 130 and the second measurement plate 140, respectively.
[130]
The secondary battery 1 state estimation apparatus to which the terminal case 2 according to the present invention is applied measures a potential difference between the third measurement terminal 523 and the fourth measurement terminal 524, and uses the potential difference to measure the secondary battery. (1) Life and deterioration conditions can be estimated.
[131]
[132]
13 is a diagram schematically illustrating a configuration in which a terminal case according to an embodiment of the present invention is coupled to a secondary battery.
[133]
Referring to FIG. 13, the terminal case 2 according to the present invention may further include a rotation member 710, a connection member 720, and a coupling member 730.
[134]
The terminal case 2 according to the present invention may be coupled to the secondary battery 1. In particular, the terminal case 2 according to the present invention may be coupled to the secondary battery 1 using the rotating member 710, the connecting member 720, and the coupling member 730.
[135]
The housing part 400 according to an embodiment of the present invention may be rotated about a rotation axis. Specifically, the housing part 400 may be rotated so that the first or second surface faces the secondary battery 1. When the first surface of the housing unit 400 faces the secondary battery 1, it may be positioned so that the second surface faces the secondary battery 1 by rotating about a rotation axis. For example, the axis of rotation of the housing unit 400 may include a linear axis passing through the center of both surfaces that are perpendicular to both the first and second surfaces of the outer surface of the housing unit 400 and are parallel to each other. 13, the rotation axis of the housing unit 400 is a central axis (C), the housing unit 400 is rotated about the central axis (C), so that the first or second surface is a secondary battery (1). ) Can be directed.
[136]
The rotation member 710 may be coupled to at least two portions of the housing part 400. In particular, the rotating member 710 may be coupled to both surfaces of the housing unit 400, respectively. For example, the rotating member 710 may be coupled to a position through which the axis of rotation of the housing unit 400 passes, on any both surfaces of the outer surface of the housing unit 400 except for the first and second surfaces.
[137]
For example, the rotation member 710 may include a turning plate and a turning screw so that the housing unit 400 can be rotated in the vertical direction. In addition, when the housing unit 400 rotates, the rotation member 710 may be coupled to a position through which the axis of rotation of the housing unit 400 passes. For example, when the turning screw is coupled to the housing part 400, the housing part 400 may rotate using the turning screw as a rotation axis. That is, as shown in FIG. 13, the housing part 400 may be rotated using a central axis C passing through the rotating member 710 as a rotation axis.
[138]
The connection member 720 may connect the coupling member 730 coupled to the secondary battery 1 and the rotation member 710 provided in the housing unit 400. In particular, the connection member 720 may be formed to extend from the rotation member 710. More specifically, the connection member 720 extends from the rotation member 710 to connect the coupling member 730 coupled to the secondary battery 1 and the rotation member 710 provided in the housing unit 400. have.
[139]
The coupling member 730 may be physically coupled to at least a portion of the secondary battery 1. That is, the coupling member 730 may be coupled to the secondary battery 1 so as to surround the outer surface of the secondary battery 1. For example, as illustrated in FIG. 13, the coupling member 730 may be configured in a strip shape to contact at least a portion of the secondary battery 1.
[140]
Through this configuration, the terminal case 2 according to the present invention can be rotated using the central axis C as a rotation axis. In addition, the terminal case 2 according to the present invention has a plurality of terminals divided into a case of charging or discharging the secondary battery 1 and a case of estimating the state of the secondary battery 1, and a plurality of terminals are provided. As the terminal case 2 is rotated, the state of the secondary battery 1 can be easily estimated.
[141]
[142]
14 is a diagram schematically illustrating a configuration in which a terminal case according to another embodiment of the present invention is coupled to a secondary battery 1.
[143]
Referring to FIG. 14, the terminal case 2 according to the present invention may further include a detachable member 740.
[144]
The detachable member 740 may be coupled to the first surface and the second surface of the housing unit 400, respectively. In particular, the detachable member 740 may be configured in a rectangular strip shape so that the protruding portion surrounds the secondary battery 1. For example, as shown in FIG. 14, the detachable member 740 may be implemented as a rectangular strip configured to protrude from the housing part 400.
[145]
In addition, the detachable member 740 may be fixed to the secondary battery 1 when the housing part 400 is coupled to the secondary battery 1. Specifically, when the housing part 400 is coupled to the secondary battery 1, the detachable member 740 may contact and be fixed to the outer surface of the secondary battery 1. In particular, the detachable member 740 may be provided with an inner space configured to surround one side of the secondary battery 1. For example, as shown in FIG. 14, the detachable member 740 is fixed to the secondary battery 1 in a form surrounding the secondary battery 1 when the housing part 400 is coupled to the secondary battery 1 Can be.
[146]
The terminal case 2 according to the present invention can be easily detached from the secondary battery 1. In particular, the user can easily and selectively detach the first surface or the second surface of the housing unit 400 from the secondary battery 1.
[147]
The terminal case 2 according to the present invention may be provided in the battery pack itself. That is, the battery pack according to the present invention may include the terminal case 2 according to the present invention described above. Here, the battery pack may include a plurality of secondary batteries, terminal cases, electrical equipment (BMS, relays, fuses, etc.) and cases.
[148]
[149]
As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of ​​the present invention and the following by those of ordinary skill in the art to which the present invention pertains. It goes without saying that various modifications and variations are possible within the equivalent range of the claims to be described.
[150]
[151]
(Explanation of code)
[152]
1: pouch type secondary battery 2: terminal case
[153]
100: electrode assembly 110: positive plate
[154]
111: positive tab 120: negative plate
[155]
121: negative electrode tab 130: first measurement plate
[156]
131: first measuring tab 140: second measuring plate
[157]
141: second measuring tab 150: insulating member
[158]
151: inner space 152: inner groove
[159]
200: pouch exterior material 210: upper pouch
[160]
220: lower pouch 310: positive lead
[161]
320: negative lead 330: first measurement lead
[162]
340: second measurement lead 400: housing portion
[163]
511: first charge/discharge positive terminal 512: first charge/discharge negative terminal
[164]
521: fourth charge/discharge positive terminal 522: fourth charge/discharge negative terminal
[165]
523: third measurement terminal 524: fourth measurement terminal
[166]
610: second charge/discharge positive terminal 620: second charge/discharge negative terminal
[167]
630: first measurement terminal 640: second measurement terminal
[168]
650: third charge/discharge positive terminal 660: third charge/discharge negative terminal
[169]
710: rotating member 720: connecting member
[170]
730: contact member 740: detachable member
Claims
[Claim 1]
A terminal case connectable to a positive electrode lead, a negative electrode lead, a first measurement lead and a second measurement lead provided in a secondary battery, the terminal case comprising: a housing portion capable of being coupled to the secondary battery; A plurality of normal mode terminals provided on the first surface of the housing unit and each connectable to the positive electrode lead, the negative electrode lead, the first measurement lead, and the second measurement lead when the first surface faces the secondary battery ; And a second surface of the housing part that is provided on a second surface different from the first surface, and when the second surface faces the secondary battery, the positive electrode lead, the negative electrode lead, the first measurement lead, and the second measurement lead. A terminal case comprising a plurality of measurement mode terminals each connectable with.
[Claim 2]
The terminal case according to claim 1, wherein the plurality of normal mode terminals are provided at a position symmetrical to a plurality of measurement mode terminals provided on the second surface on the first surface.
[Claim 3]
The method of claim 2, wherein the plurality of normal mode terminals are provided at positions corresponding to positions of the plurality of measurement mode terminals when the housing unit is rotated along a rotation axis, and the rotation axis comprises the outer surface of the housing unit. A terminal case comprising a linear axis passing through the center of both surfaces perpendicular to both the first and second surfaces and parallel to each other.
[Claim 4]
The terminal case of claim 1, wherein the housing part is capable of being coupled to the secondary battery with the first or second surface facing the secondary battery.
[Claim 5]
The terminal of claim 4, further comprising a detachable member provided in the housing unit to surround the first and second surfaces, respectively, and surrounding an outer surface of the secondary battery and fixedly coupling the secondary battery and the housing unit case.
[Claim 6]
The method of claim 1, further comprising a rotation member coupled to a position through which the rotation axis of the housing unit passes, on each of the outer surfaces of the housing unit except for the first and second surfaces, the rotation axis of the housing unit And a linear axis passing through the center of both surfaces perpendicular to both the first surface and the second surface of the outer surface of the housing part and parallel to each other.
[Claim 7]
The terminal case of claim 6, further comprising a connection member extending from the rotation member and capable of connecting the rotation member and a coupling member coupled to the secondary battery.
[Claim 8]
The method of claim 1, wherein the plurality of normal mode terminals include the first measurement lead, the second measurement lead, and the positive electrode lead when the housing portion and the secondary battery are coupled while the first surface faces the secondary battery. A terminal case comprising a first charge/discharge positive terminal in contact, and a first charge/discharge negative terminal in contact with the negative lead.
[Claim 9]
The method of claim 1, wherein the plurality of measurement mode terminals include: a second charge/discharge positive electrode terminal in contact with the positive electrode lead when the housing part and the secondary battery are coupled while the second surface faces the secondary battery, A terminal case comprising a second charging/discharging negative terminal in contact with the negative lead, a first measurement terminal in contact with the first measurement lead, and a second measurement terminal in contact with the second measurement lead.
[Claim 10]
A battery pack comprising the terminal case according to any one of claims 1 to 9.