Battery pack

Abstract

To suppress an influence of gas generated from a battery cell on wires.SOLUTION: A battery pack 1 includes a battery module 10 including a module housing 500, and a high-voltage line 600 existing at least partially on one side with respect to the battery module 10 and electrically connected to the battery module 10. The amount of gas emission on the other side, which is different from the one side, of the module housing 500 is more than the amount of gas emission on the one side of the module housing 500.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a battery pack. [Background technology]

[0002] In recent years, various battery packs have been developed. A battery pack includes a battery module and a housing that houses the battery module. The battery module includes battery cells.

[0003] Patent Document 1 describes a battery module. The battery module includes a plurality of battery cells and gas venting structures located on both sides of the plurality of battery cells.

[0004] Patent Document 2 describes a battery pack. The battery pack includes a battery module and an internal frame that defines a vent hole. Gas generated from the battery module enters the vent hole and is discharged through the internal frame.

[0005] Patent Document 3 describes a battery pack. The battery pack includes a battery module and a pack frame. Gas generated from the battery module is discharged through a gas transfer passage inside the pack frame. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2023-513503 [Patent Document 2] Special Publication No. 2023-540090 [Patent Document 3] Special Publication No. 2023-530296 Summary of the Invention [Problem to be solved by the invention]

[0007] In a battery module electrically connected to wiring such as a high-pressure valve, a relatively high-temperature gas may be generated from the battery cell due to an abnormality in the battery cell. In the battery module, it is sometimes necessary to suppress the impact of the gas generated from the battery cell on the wiring.

[0008] One example of an object of the present invention is to suppress the influence of gas generated from a battery cell on wiring. Other objects of the present invention will become apparent from the description of this specification. [Means for solving the problem]

[0009] One aspect of the present invention is as follows. 1. A battery module having a gas exhaust section; wiring located at least partially on one side of the battery module and electrically connected to the battery module; Equipped with A battery pack, wherein the amount of gas discharged on the other side different from the one side of the gas discharge part is greater than the amount of gas discharged on the one side of the gas discharge part. 2. The battery pack according to claim 1, wherein the one side and the other side are located on opposite sides of the battery module. 3. The battery pack according to 1. or 2., wherein the wiring electrically connected to the battery modules is at least partially located between the battery modules. 4. The battery pack according to any one of 1. to 3., further comprising a heat-resistant body that at least partially covers the wiring. [Effects of the Invention]

[0010] According to the above aspect of the present invention, it is possible to suppress the influence of gas generated from the battery cell on the wiring. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 2 is an exploded top perspective view of the battery module according to the embodiment. [Figure 2]FIG. 2 is a plan view of the battery pack according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, similar components are designated by similar reference numerals, and the description thereof will be omitted as appropriate.

[0013] FIG. 1 is an exploded perspective view of a battery module 10 according to an embodiment.

[0014] For the sake of explanation, FIG. 1 shows the X, Y, and Z directions. The X direction indicates the front-rear direction of the battery module 10. The Y direction is one of the directions perpendicular to the X direction. The Y direction indicates the left-right direction of the battery module 10. The Z direction is a direction perpendicular to both the X and Y directions. The Z direction indicates the up-down direction of the battery module 10. The arrows pointing to the X direction, the Y direction, and the Z direction indicate the rear, right, and up directions of the battery module 10, respectively. Hereinafter, as necessary, the tip side of the arrow indicating the X direction will be referred to as the +X side, the opposite side of the tip of the arrow indicating the X direction will be referred to as the -X side, the tip side of the arrow indicating the Y direction will be referred to as the +Y side, the opposite side of the tip of the arrow indicating the Y direction will be referred to as the -Y side, the tip side of the arrow indicating the Z direction will be referred to as the +Z side, and the opposite side of the tip of the arrow indicating the Z direction will be referred to as the -Z side. The relationship between the X direction, Y direction, and Z direction and the front-rear direction, left-right direction, and up-down direction of the battery module 10 is not limited to the above example.

[0015] The battery module 10 includes a plurality of battery cells 100, a plurality of compression pads 200, a first voltage detection device 300, a second voltage detection device 400, a module housing 500, a positive bus bar 610, and a negative bus bar 620.

[0016] The multiple battery cells 100 and the multiple compression pads 200 are stacked alternately in the Y direction. Each compression pad 200 is disposed between adjacent battery cells 100 in the Y direction. Hereinafter, unless otherwise specified, a stack of battery cells 100 refers to the multiple battery cells 100 and the multiple compression pads 200 stacked alternately in the Y direction. The dimension of each battery cell 100 in the X direction is the dimension in the longitudinal direction of each battery cell 100. The dimension of each battery cell 100 in the Z direction is the dimension in the lateral direction of each battery cell 100. The dimension of each battery cell 100 in the Y direction is the dimension in the thickness direction of each battery cell 100. The shape of each battery cell 100 is not limited to this example.

[0017] Each battery cell 100 includes a battery element (not shown), an outer casing 110, a positive electrode terminal 122, and a negative electrode terminal 124. In one example, the battery element includes a plurality of positive electrodes and a plurality of negative electrodes (not shown) stacked alternately in the Y direction, and a separator (not shown) positioned between adjacent positive electrodes and negative electrodes in the Y direction. The outer casing 110 seals the battery element and an electrolyte (not shown). The positive electrode terminal 122 is electrically connected to the positive electrode of the battery element. The positive electrode terminal 122 is drawn out from one of both sides of the outer casing 110 in the X direction. The negative electrode terminal 124 is electrically connected to the negative electrode of the battery element. The negative electrode terminal 124 is drawn out from the other side of the outer casing 110 in the X direction. However, the structure of each battery cell 100 is not limited to this example.

[0018] Each battery cell 100 may be an all-solid-state battery. In an all-solid-state battery, a solid electrolyte layer is provided in the portion corresponding to the separator. An all-solid-state battery does not contain an electrolyte solution. Hereinafter, unless otherwise specified, each battery cell 100 will be described as a battery cell containing an electrolyte solution.

[0019] The multiple battery cells 100 are electrically connected in a combination of series and parallel. Specifically, cell groups including at least two battery cells 100 adjacent to each other in the Y direction and connected in parallel are stacked in the Y direction and connected in series. A terminal group 120 including a positive terminal 122 drawn from a battery cell 100 of one cell group connected in parallel and a negative terminal 124 drawn from a battery cell 100 of another cell group connected in parallel is located on the -X side of the stack of battery cells 100. The positive terminal 122 and the negative terminal 124 in the terminal group 120 are electrically connected to each other by a joining method such as laser welding. A terminal group 120 is also located on the +X side of the stack of battery cells 100. Thus, multiple cell groups are connected in series from a cell group located at one end of the stack of battery cells 100 in the Y direction to a cell group located at the other end of the stack of battery cells 100 in the Y direction. Hereinafter, unless otherwise specified, the -X side terminal group 120 refers to the terminal group 120 located on the -X side of the stack of battery cells 100, and the +X side terminal group 120 refers to the terminal group 120 located on the +X side of the stack of battery cells 100.

[0020] The electrical connection of the plurality of battery cells 100 is not limited to the above example. For example, the cell group may include three or more battery cells 100 connected in parallel. Alternatively, a stack of battery cells 100 may be formed by connecting single battery cells 100 in series.

[0021] The first voltage detecting device 300 detects the voltages of the plurality of −X side terminal groups 120. The first voltage detecting device 300 has a first holding body 310, a plurality of first voltage detecting terminals 320, and a first connector 340.

[0022] The first holder 310 covers the -X side portion of the stack of battery cells 100. The first holder 310 is, for example, an insulator such as resin. The first holder 310 defines a plurality of first openings 311. Each of the plurality of -X side terminal groups 120 is exposed toward the -X side through each of the plurality of first openings 311.

[0023] Each of the multiple first voltage detection terminals 320 is located on the -X side with respect to each of the multiple -X side terminal groups 120. Each first voltage detection terminal 320 is made of a conductor such as metal. The +X side surface of each first voltage detection terminal 320 and the -X side surface of each -X side terminal group 120 are joined to each other by a joining method such as laser welding. Therefore, each first voltage detection terminal 320 and each -X side terminal group 120 are electrically connected to each other. Therefore, the first voltage detection device 300 can detect the voltage of each -X side terminal group 120 using each first voltage detection terminal 320. The multiple first voltage detection terminals 320 are integrally held by a first holder 310. Therefore, by placing the first holder 310 at an appropriate position with respect to the stack of battery cells 100, each of the multiple first voltage detection terminals 320 can be positioned appropriately with respect to each of the multiple -X side terminal groups 120.

[0024] The first connector 340 is provided on the first holding body 310. The multiple first voltage detection terminals 320 and the first connector 340 are electrically connected to each other via multiple voltage detection lines not shown in Fig. 1. The multiple voltage detection lines are routed between the first voltage detection terminals 320 and the first connector 340 via the first holding body 310.

[0025] The second voltage detecting device 400 detects the voltages of the plurality of +X side terminal groups 120. The second voltage detecting device 400 has a second holding body 410 and a plurality of second voltage detecting terminals 420.

[0026] The second holder 410 covers the +X side portion of the stack of battery cells 100. The second holder 410 is, for example, an insulator such as resin. The second holder 410 defines a plurality of second openings 411. Each of the multiple +X side terminal groups 120 is exposed toward the +X side through each of the multiple second openings 411.

[0027] Each of the multiple second voltage detection terminals 420 is located on the +X side with respect to each of the multiple +X side terminal groups 120. Each second voltage detection terminal 420 is made of a conductor such as metal. The -X side surface of each second voltage detection terminal 420 and the +X side surface of each +X side terminal group 120 are joined to each other by a joining method such as laser welding. Therefore, each second voltage detection terminal 420 and each +X side terminal group 120 are electrically connected to each other. Therefore, the second voltage detection device 400 can detect the voltage of each +X side terminal group 120 using each second voltage detection terminal 420. The multiple second voltage detection terminals 420 are integrally held by a second holder 410. Therefore, by placing the second holder 410 at an appropriate position with respect to the stack of battery cells 100, each of the multiple second voltage detection terminals 420 can be positioned at an appropriate position with respect to each of the multiple +X side terminal groups 120.

[0028] Similar to the first voltage detection device 300, the multiple second voltage detection terminals 420 and a connector not shown in FIG. 1 are electrically connected to each other via multiple voltage detection lines not shown in FIG. 1.

[0029] The module housing 500 includes a first plate 510, a second plate 520, a third plate 530, a fourth plate 540, a fifth plate 550, and a sixth plate 560. Each plate is, for example, a conductor such as a metal.

[0030] The first plate 510 covers the -X side portion of the stack of battery cells 100 with the first voltage detection device 300 positioned between the stack of battery cells 100 and the first plate 510. The second plate 520 covers the +X side portion of the stack of battery cells 100 with the second voltage detection device 400 positioned between the stack of battery cells 100 and the second plate 520. The third plate 530 covers the -Y side portion of the stack of battery cells 100 with the first insulating cover 532 positioned between the stack of battery cells 100 and the third plate 530. The first insulating cover 532 can electrically insulate the battery cell 100 located at one end on the -Y side from the third plate 530. The first insulating cover 532 is made of, for example, silica aerogel. The fourth plate 540 covers the +Y side portion of the stack of battery cells 100, with the second insulating cover 542 positioned between the stack of battery cells 100 and the fourth plate 540. The second insulating cover 542 electrically insulates the battery cell 100 located at the other end of the +Y side from the fourth plate 540. The second insulating cover 542 is made of, for example, silica aerogel. The fifth plate 550 covers the -Z side portion of the stack of battery cells 100, with the thermally conductive adhesive 552 positioned between the stack of battery cells 100 and the fifth plate 550. The thermally conductive adhesive 552 allows heat generated from the stack of battery cells 100 to dissipate toward the fifth plate 550. The sixth plate 560 covers the +Z side portion of the stack of battery cells 100.

[0031] The positive electrode bus bar 610 is located at the end of the first holder 310 on the -Y side. The positive electrode bus bar 610 and the -X side positive electrode terminal 122 of the cell group including the multiple battery cells 100 located at one end on the -Y side are joined to each other by a joining method such as laser welding. Therefore, the positive electrode bus bar 610 and the cell group located at one end on the -Y side are electrically connected to each other. The positive electrode bus bar 610 functions as an external terminal for electrically connecting the battery module 10 to an external device such as another battery module.

[0032] The negative electrode bus bar 620 is located at the end of the first holder 310 on the +Y side. The negative electrode bus bar 620 and the negative electrode terminal 124 on the -X side of the cell group including the plurality of battery cells 100 located at the other end on the +Y side are joined to each other by a joining method such as laser welding. Therefore, the negative electrode bus bar 620 and the cell group located at the other end on the +Y side are electrically connected to each other. The negative electrode bus bar 620 functions as an external terminal for electrically connecting the battery module 10 to an external device such as another battery module.

[0033] 1 , the positive electrode terminal 122 at the end of a plurality of serially connected cell groups is the positive electrode terminal 122 on the -X side of the cell group located at one end on the -Y side, and the negative electrode terminal 124 at the end of a plurality of serially connected cell groups is the negative electrode terminal 124 on the -X side of the cell group located at the other end on the +Y side. Thus, the positive electrode bus bar 610 is disposed on both the -X side and the -Y side of the stack of battery cells 100, and the negative electrode bus bar 620 is disposed on both the -X side and the +Y side of the stack of battery cells 100. However, the arrangement of the positive electrode terminal 122 and the negative electrode terminal 124 at the end of a plurality of serially connected cell groups may differ depending on the number of cell groups included in the stack of battery cells 100. For example, there are cases where the positive electrode terminal 122 at the end of a group of multiple cells connected in series is the positive electrode terminal 122 on the -X side of the cell group located at one end on the -Y side, and the negative electrode terminal 124 at the end of a group of multiple cells connected in series is the negative electrode terminal 124 on the +X side of the cell group located at the other end on the +Y side. In this case, the positive electrode bus bar 610 is arranged on the -X side and the -Y side of the stack of battery cells 100, and the negative electrode bus bar 620 is arranged on the +X side and the +Y side of the stack of battery cells 100.

[0034] Fig. 2 is a plan view of a battery pack 1 according to an embodiment. In Fig. 2, the arrow with a black dot indicating the Z direction indicates that the arrow indicating the Z direction extends from the back to the front of the page.

[0035] The battery pack 1 according to the embodiment includes a plurality of battery modules 10 and a pack housing 20. In Fig. 2, each battery module 10 is shown with the fifth plate 550 removed.

[0036] In the example shown in FIG. 2 , four battery modules 10 are arranged in two rows and two columns in the X and Y directions, respectively, as viewed in the Z direction. The two battery modules 10 located on the +X side in FIG. 2 are arranged in the same orientation as the battery modules 10 shown in FIG. 1 . Therefore, each of the two battery modules 10 located on the +X side in FIG. 2 is arranged with the first plate 510 and the second plate 520 of each battery module 10 located on the -X side and +X side, respectively. The two battery modules 10 located on the -X side in FIG. 2 are arranged with the battery module 10 shown in FIG. 1 rotated 180° around the Z direction. Therefore, each of the two battery modules 10 located on the -X side in FIG. 2 is arranged with the first plate 510 and the second plate 520 of each battery module 10 located on the +X side and -X side, respectively. The number and arrangement of the multiple battery cells 100 are not limited to the example shown in FIG. 2 . For example, the battery pack 1 may include only one, two, three, or five or more battery modules 10.

[0037] The pack housing 20 houses multiple battery modules 10. The pack housing 20 has a lower plate 22, side frames 24, and a support frame 26. The lower plate 22 has a generally plate shape perpendicular to the Z direction. The multiple battery modules 10 are located on the +Z side of the +Z side surface of the lower plate 22. The side frames 24 are located around the entire periphery of the lower plate 22 in the Z direction. The side frames 24 are located on the +Z side of the +Z side surface of the lower plate 22. When viewed from the Z direction, the support frame 26 is located within the area surrounded by the side frames 24. The support frame 26 at least partially surrounds the multiple battery modules 10 in the Z direction. The support frame 26 is located on the +Z side of the +Z side surface of the lower plate 22. The battery modules 10 and the support frame 26 can be fastened to each other using fasteners such as bolts. The pack housing 20 also has an upper plate (not shown in FIG. 2 ). The upper plate is located on the +Z side relative to the plurality of battery modules 10, the lower plate 22, the side frames 24, and the support frame .

[0038] The four battery modules 10 shown in FIG. 2 are electrically connected to one another via a plurality of high-voltage lines 600. Five high-voltage lines 600 are shown in FIG. 2. The first high-voltage line 600 is a wiring that electrically connects the positive bus bars 610 of the battery modules 10 on the −X and +Y sides to the negative bus bars 620 of the battery modules 10 on the +X and +Y sides. The second high-voltage line 600 is a wiring that electrically connects the positive bus bars 610 of the battery modules 10 on the +X and +Y sides to the negative bus bars 620 of the battery modules 10 on the +X and −Y sides. The third high-voltage line 600 is a wiring that electrically connects the positive bus bars 610 of the battery modules 10 on the −X and −Y sides to the negative bus bars 620 of the battery modules 10 on the −X and +Y sides. The fourth high-voltage line 600 is a wiring that is electrically connected to the positive bus bars 610 of the battery modules 10 on the +X and −Y sides. The fourth high-voltage line 600 is drawn from the positive electrode bus bar 610 of the battery module 10 on the +X side and the -Y side toward the -Y side. The fifth high-voltage line 600 is a wiring electrically connected to the negative electrode bus bar 620 of the battery module 10 on the -X side and the -Y side. The fifth high-voltage line 600 is drawn from the negative electrode bus bar 620 of the battery module 10 on the -X side and the -Y side toward the -Y side. Therefore, the four battery modules 10 are connected in series.

[0039] 2, each high-voltage wire 600 is at least partially located between adjacent battery modules 10 in the X direction. In the example shown in FIG. 2, the support frame 26 includes a support extension 27 located between two battery modules 10 on the +X side and two battery modules 10 on the -X side. The support extension 27 extends in the Y direction. Each high-voltage wire 600 is at least partially located on the +Z side with respect to the +Z side surface of the support extension 27.

[0040] In each battery module 10, a relatively high-temperature gas may be generated from the battery cell 100 due to an abnormality in the battery cell 100. The module housing 500 of each battery module 10 serves as a gas exhaust section that exhausts gas generated from the battery cell 100. In the embodiment, the first plate 510 of the module housing 500 defines a gas exhaust hole for exhausting gas generated from the battery cell 100. Therefore, the gas generated from the battery cell 100 can be exhausted to the outside of the battery module 10 through the gas exhaust hole of the first plate 510. In the embodiment, the second plate 520 of the module housing 500 defines a gas exhaust hole for exhausting gas generated from the battery cell 100. Therefore, the gas generated from the battery cell 100 can be exhausted to the outside of the battery module 10 through the gas exhaust hole of the second plate 520. Therefore, in the embodiment, the gas generated from the battery cell 100 in each battery module 10 can be exhausted to both sides of the battery module 10 in the X direction.

[0041] In the example shown in FIG. 2, in each battery module 10, multiple adhesives 562 are located between the +Z side portions of the multiple battery cells 100 shown in FIG. 1 and the -Z side surface of the fifth plate 550 shown in FIG. 1. The multiple adhesives 562 bond the +Z side portions of the multiple battery cells 100 and the -Z side surface of the fifth plate 550 shown in FIG. 1 to each other. When viewed from the Z direction, the multiple adhesives 562 are aligned in the Y direction with each adhesive 562 extending obliquely with respect to the X direction. In each battery module 10 on the +X side, the Y direction dimension of each adhesive 562 narrows toward the +X side. In each battery module 10 on the -X side, the Y direction dimension of each adhesive 562 narrows toward the -X side. However, the shape and arrangement of the multiple adhesives 562 are not limited to the example shown in FIG. 2.

[0042] In the example shown in FIG. 2 , the gaps between adjacent adhesives 562 in the Y direction in each battery module 10 define paths for discharging gas generated from the battery cells 100. In each battery module 10 on the +X side, the Y dimension of the gaps between adjacent adhesives 562 in the Y direction increases toward the +X side. Therefore, in each battery module 10 on the +X side, gas generated from the battery cells 100 is more likely to propagate toward the +X side than toward the −X side. Therefore, in each battery module 10 on the +X side, the amount of gas discharged from the +X side of the module housing 500 is greater than the amount of gas discharged from the −X side of the module housing 500. Therefore, compared to a case in which the amount of gas discharged from both sides of the module housing 500 in the X direction in each battery module 10 on the +X side is equal, the impact of gas generated from the battery cells 100 in each battery module 10 on the +X side on the high-voltage line 600 can be suppressed. In each battery module 10 on the −X side, the Y dimension of the gaps between adjacent adhesives 562 in the Y direction increases toward the −X side. Therefore, in each battery module 10 on the -X side, gas generated from the battery cells 100 propagates more easily toward the -X side than toward the +X side. Therefore, in each battery module 10 on the -X side, the amount of gas discharged on the -X side of the module housing 500 is greater than the amount of gas discharged on the +X side of the module housing 500. Therefore, compared to a case in which the amounts of gas discharged on both sides of the module housing 500 in the X direction are equal in each battery module 10 on the -X side, the impact of gas generated from the battery cells 100 in each battery module 10 on the -X side on the high-voltage line 600 can be suppressed.

[0043] 2, the multiple high-voltage lines 600 are at least partially located between two battery modules 10 on the +X side and two battery modules 10 on the -X side. Therefore, compared to a case where the gas discharge amounts on both sides of the module housing 500 in the X direction in the battery modules 10 on both sides of each high-voltage line 600 in the X direction are equal, the impact of gas generated from the battery cells 100 of the battery modules 10 on each high-voltage line 600 can be suppressed.

[0044] The method for adjusting the gas discharge amount on the +X side of the module housing 500 and the gas discharge amount on the -X side of the module housing 500 is not limited to the above-described method. In one example, the total area of ​​the multiple gas discharge holes of the first plate 510 may be larger than the total area of ​​the multiple gas discharge holes of the second plate 520. In this example, the gas discharge amount on the side where the first plate 510 is located can be made larger than the gas discharge amount on the side where the second plate 520 is located without adjusting the gas discharge amount on both sides in the X direction using multiple adhesives 562. In another example, the first plate 510 may define gas discharge holes while the second plate 520 does not define gas discharge holes. In this other example, the gas discharge amount on the side where the first plate 510 is located can be made larger than 0 while the gas discharge amount on the side where the second plate 520 is located is 0.

[0045] In the embodiment, a larger amount of gas is discharged toward the side opposite to the side where the high-voltage wire 600 of each battery module 10 is located than toward the side where the high-voltage wire 600 of each battery module 10 is located. However, as long as a relatively large amount of gas is not discharged toward the side where the high-voltage wire 600 of each battery module 10 is located, a larger amount of gas may be discharged toward a side other than the side where the high-voltage wire 600 of each battery module 10 is located than toward the side where the high-voltage wire 600 of each battery module 10 is located. For example, in the example shown in FIG. 2 , a larger amount of gas may be discharged toward the +Y side or −Y side of each battery module 10 than toward the side where the high-voltage wire 600 of each battery module 10 is located.

[0046] As shown in FIG. 2 , the cover 602 may cover a portion of each high-voltage wire 600 that is located on the +Z side of the support extension portion 27. The cover 602 is a heat-resistant material such as an iron cover. The cover 602 is located, for example, on the +Z side of the above-mentioned portion of each high-voltage wire 600. By having the cover 602 at least partially cover each high-voltage wire 600, the high-voltage wire 600 can be protected from gas discharged from each battery module 10 toward the high-voltage wire 600. Therefore, the impact of gas generated from the battery cells 100 on the high-voltage wire 600 can be suppressed compared to when the cover 602 is not provided.

[0047] Although the embodiments of the present invention have been described above with reference to the drawings, these are merely examples of the present invention, and various other configurations can also be adopted. [Explanation of symbols]

[0048] REFERENCE SIGNS LIST 1 battery pack, 10 battery module, 20 pack housing, 22 lower plate, 24 side frame, 26 support frame, 27 support extension portion, 100 battery cell, 110 exterior material, 120 terminal group, 122 positive terminal, 124 negative terminal, 200 compression pad, 300 first voltage detection device, 310 first holder, 311 first opening, 320 first voltage detection terminal, 340 first connector, 400 second voltage detection device, 410 second holder, 411 second opening, 420 second voltage detection terminal, 500 module housing, 510 first plate, 520 second plate, 530 third plate, 532 first insulating cover, 540 fourth plate, 542 second insulating cover, 550 fifth plate, 552 thermally conductive adhesive, 560 sixth plate, 562 adhesive, 600 High voltage wire, 602 cover, 610 positive busbar, 620 negative busbar

Claims

1. a battery module having a gas exhaust section; wiring located at least partially on one side of the battery module and electrically connected to the battery module; Equipped with A battery pack, wherein the amount of gas discharged on the other side different from the one side of the gas discharge part is greater than the amount of gas discharged on the one side of the gas discharge part.

2. The battery pack according to claim 1 , wherein the one side and the other side are located on opposite sides of the battery module.

3. The battery pack according to claim 1 , wherein the plurality of wirings electrically connected to the plurality of battery modules are at least partially located between the plurality of battery modules.

4. The battery pack according to claim 1 , further comprising a heat-resistant body at least partially covering the wiring.

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