Battery pack and vehicle

Abstract

The utility model belongs to the technical field of power batteries, and particularly relates to a battery pack and a vehicle. The utility model aims to solve the problem of low structural strength of the battery pack in the related art. According to the battery pack and the vehicle, the supporting piece is arranged between the upper cover and the battery cell module, the supporting space, the sampling space and the containing space are constructed on the supporting piece, the pole columns, the busbars and the sampling wire harnesses of the battery cells are all arranged in the sampling space, the supporting space and the containing space are filled with the fixing glue, and the battery cell module and the upper cover are firmly bonded through the fixing glue; according to the battery pack, fixing glue is arranged between the battery cell module and the tray, so that the battery cell module and the tray are firmly bonded, the top of the battery cell module and the top of the battery cell module are firmly bonded with the shell, and the overall structural strength of the battery pack is effectively improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of power batteries, and in particular to a battery pack and a vehicle. Background Art

[0002] As the core power supply component of electric vehicles, the battery pack determines key indicators such as the electric vehicle's driving range, cost, service life, safety, and maintainability.

[0003] In vehicles using CTB (cell to body) technology, the upper cover of the battery pack is integrated with the body floor, allowing the power battery system to serve as both an energy body and a body structural member to participate in the force transmission and force bearing of the entire vehicle, streamlining the structure and achieving a higher degree of integration.

[0004] However, since the force-bearing capacity of the top of the relevant battery pack is relatively small, in vehicles with CTB technology, the Z-direction external load applied to the top of the battery pack is relatively large, resulting in a decrease in the structural strength of the battery pack. Utility Model Content

[0005] In view of this, the main purpose of the embodiments of the present application is to provide a battery pack and a vehicle to solve the technical problem of low structural strength of the battery pack.

[0006] To achieve the above-mentioned purpose, an embodiment of the present application provides a battery pack, including a shell, a battery cell module and a support member, the shell including a tray and an upper cover, the tray and the upper cover are arranged to form a closed accommodating cavity; the battery cell module includes a battery cell, the battery cell includes at least two poles, the battery cell module is arranged in the accommodating cavity, the poles face the upper cover, and a fixing glue is arranged between the battery cell module and the tray; the support member is arranged between the battery cell module and the upper cover, the support member is constructed with a supporting space, a sampling space and an accommodating space connected between the upper cover and the battery cell module, the pole is accommodated in the sampling space, the accommodating space corresponds to the position between two adjacent poles, the supporting space and the accommodating space are located on opposite sides of the sampling space, and the supporting space and the accommodating space are both filled with fixing glue.

[0007] In some embodiments that may include the above embodiments, the battery pack further includes a bus, which is disposed in the sampling space and connected to the pole; a side of the bus facing away from the upper cover abuts against the support member.

[0008] In some embodiments that may include the above embodiments, the battery pack further includes a sampling harness, the sampling harness is disposed in the sampling space, and a sampling terminal of the sampling harness is connected to the bus.

[0009] In some embodiments that may include the above embodiments, a first insulating glue is provided between the sampling wire harness and the bus bar.

[0010] In some embodiments that may include the above-mentioned embodiments, the battery cell module includes multiple battery cell groups, the battery cell groups include multiple battery cells, the multiple battery cells are arranged in sequence along a first direction, and the multiple battery cell groups are arranged in sequence along a second direction; the support space is arranged corresponding to two of the battery cells adjacent to each other along the second direction.

[0011] In some embodiments that may include the above embodiments, the battery cell includes a battery cell body and a cover plate, the cover plate is arranged on a side of the battery cell body facing the upper cover, and the support member is arranged between the cover plate and the upper cover.

[0012] In some embodiments that may include the above embodiments, the battery cell further includes an explosion-proof valve, the explosion-proof valve is arranged on a side of the battery cell away from the pole, and the fixing glue is arranged on the periphery of the explosion-proof valve.

[0013] In some embodiments that may include the above embodiments, an insulating protective layer is further provided between the support member and the upper cover.

[0014] In some embodiments that may include the above embodiments, a potting member is further provided between the insulating protective layer and the upper cover.

[0015] An embodiment of the present application also provides a vehicle, comprising the battery pack in the above embodiment.

[0016] The battery pack and vehicle provided in the embodiments of the present application are provided with a support member between the upper cover and the battery cell module, and a support space, a sampling space and a accommodating space are constructed on the support member. The poles, bus bars and sampling harnesses of the battery cells are all arranged in the sampling space, and the support space and the accommodating space are both filled with fixing glue, which firmly bonds the battery cell module and the upper cover. The present application also provides fixing glue between the battery cell module and the tray, so that the battery cell module and the tray are firmly bonded, so that the top and the bottom of the battery cell module can be firmly bonded to the shell, effectively improving the overall structural strength of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1A schematic diagram of the structure of a battery pack provided in an embodiment of the present application at a first viewing angle;

[0019] Figure 2 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application at a second viewing angle;

[0020] Figure 3 for Figure 2 Sectional view along AA direction;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram of P1 in the middle;

[0022] Figure 5 for Figure 3 The enlarged schematic diagram of P2 in the middle;

[0023] Figure 6 A schematic structural diagram of a support member in a battery pack provided in an embodiment of the present application at a first viewing angle;

[0024] Figure 7 for Figure 6 The enlarged schematic diagram of P3 in the middle;

[0025] Figure 8 A schematic diagram of the structure of a battery cell module, a support member, a bus bar and a sampling harness in a battery pack provided in an embodiment of the present application;

[0026] Fig. 9 for Figure 8 The enlarged schematic diagram of P4 in the middle;

[0027] Fig.10 Schematic diagram of the structure of the busbar in the battery pack provided in the embodiment of the present application Figure 1 ;

[0028] Fig.11 Schematic diagram of the structure of the busbar in the battery pack provided in the embodiment of the present application Figure 2 ;

[0029] Fig.12 Schematic diagram of the structure of the busbar in the battery pack provided in the embodiment of the present application Figure 3 ;

[0030] Fig.13 Schematic diagram of the structure of the busbar in the battery pack provided in the embodiment of the present application Figure 4 ;

[0031] Fig.14 Schematic diagram of the structure of the busbar in the battery pack provided in the embodiment of the present application Figure 5 ;

[0032] Fig.15 A schematic diagram of the structure of a battery cell module, a bus bar and a sampling harness in a battery pack provided in an embodiment of the present application;

[0033] Fig.16 for Fig.15 The enlarged schematic diagram of P5 in the middle;

[0034] Fig.17 for Fig.15 A magnified schematic diagram of P6 in the figure.

[0035] Description of reference numerals:

[0036] 10. Shell;

[0037] 110. tray; 120. upper cover;

[0038] 101, fixing glue;

[0039] 20. Battery cell module;

[0040] 210, battery cell; 211, pole;

[0041] 212. battery cell body; 213. cover plate;

[0042] 214. Explosion-proof valve;

[0043] 30. Supporting parts;

[0044] 301, support space; 302, sampling space;

[0045] 3021, a first sampling space; 3022, a second sampling space;

[0046] 303, accommodating space; 310, supporting plate;

[0047] 311. Limiting hole; 3111. First limiting hole;

[0048] 3112, second limiting hole; 320, first reinforcement member;

[0049] 330, second reinforcement member;

[0050] 40. Bus;

[0051] 410. Cell connection portion; 411. First support area;

[0052] 412. Pole accommodating area; 413. Second supporting area;

[0053] 414, routing area; 4141, first routing area;

[0054] 4142, second wiring area; 420, sampling connection part;

[0055] 50. Sampling harness;

[0056] 510, sampling terminal; 520, first insulating glue;

[0057] 60. Insulation protective layer;

[0058] 70. Second insulating glue. DETAILED DESCRIPTION

[0059] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0060] Secondly, it should be noted that in the description of the embodiments of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0061] In addition, it should be noted that in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] As described in the background technology, the battery pack in the related art has the problem of low structural strength. The applicant has found through research that the reason for this problem is that the structural stability between the upper cover, the battery cell module and the tray in the battery pack in the related art is low. After the upper cover of the battery pack is used as part of the vehicle body floor, the top of the battery pack is subjected to a large external load in the Z direction, resulting in the problem of low structural strength of the battery pack.

[0064] In response to the above technical problems, an embodiment of the present application provides a battery pack and a vehicle, wherein a support member is arranged between an upper cover and a battery cell module, and a support space, a sampling space and a accommodating space are constructed on the support member, the poles, bus bars and sampling harness of the battery cell are arranged in the sampling space, and the support space and the accommodating space are filled with fixing glue, which firmly bonds the battery cell module and the upper cover. The present application also arranges fixing glue between the battery cell module and a tray, so that the battery cell module and the tray are firmly bonded, so that the top and the bottom of the battery cell module can be firmly bonded to the shell, effectively improving the overall structural strength of the battery pack.

[0065] The principles and features of the embodiments of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the embodiments of the present application and are not used to limit the scope of the embodiments of the present application.

[0066] refer to Figure 1-Figure 4 This embodiment provides a battery pack, including a shell 10, a battery cell module 20 and a support member 30.

[0067] The housing 10 includes a tray 110 and an upper cover 120 . The tray 110 and the upper cover 120 are arranged to form a closed accommodating cavity. The battery cell module 20 is arranged in the accommodating cavity. The support member 30 is arranged between the battery cell module 20 and the upper cover 120 .

[0068] A fixing glue 101 is provided between the battery cell module 20 and the tray 110. The fixing glue 101 may be structural glue or foam glue, etc. The fixing glue 101 is bonded between the battery cell module 20 and the tray 110. The fixing glue 101 has high bonding strength, so that the battery cell module 20 and the tray 110 can be firmly bonded.

[0069] The battery cell module 20 includes a battery cell 210, which includes a battery cell body 212, at least two poles 211, a cover plate 213 and an explosion-proof valve 214. The cover plate 213 covers the side of the battery cell body 212 facing the upper cover 120. The multiple poles 211 of the battery cell 210 are arranged at intervals along the second direction Y on the side of the battery cell body 212 facing the upper cover 120 and extend to the outside of the cover plate 213.

[0070] refer to Figure 5-Figure 7The support member 30 may include a support plate 310 and a plurality of first reinforcement members 320, the support plate 310 is stacked on the cover plate 213, the plurality of first reinforcement members 320 are arranged on the side of the support plate 310 away from the cover plate 213, and the plurality of first reinforcement members 320 are arranged to form a support space 301, a sampling space 302 and a accommodating space 303, the sampling space 302 corresponds to the position of the pole 211, the accommodating space 303 corresponds to the position between two adjacent poles 211, the support space 301 and the accommodating space 303 are located on opposite sides of the sampling space 302, that is, the support space 301 corresponds to the position of the end of the cover plate 213 along the second direction Y.

[0071] The support space 301, the sampling space 302 and the accommodating space 303 are all connected between the upper cover 120 and the battery module 20. The support plate 310 can be configured with a limiting hole 311, which is connected to the sampling space 302, and the pole 211 can be inserted into the limiting hole 311.

[0072] The support space 301 may include a first support space 301 and a second support space 301, and the first support space 301 and the second support space 301 correspond to the positions of the two ends of the cover plate 213 along the second direction Y, respectively. The sampling space 302 may include a first sampling space 3021 and a second sampling space 3022, and the limiting hole 311 may include a first limiting hole 3111 and a second limiting hole 3112, the first limiting hole 3111 is connected to the first sampling space 3021, and the second limiting hole 3112 is connected to the second sampling space 3022, and the two poles 211 are respectively penetrated in the first limiting hole 3111 and the second limiting hole 3112. The accommodating space 303 is located between the first sampling space 3021 and the second sampling space 3022, that is, the first reinforcement member 320 and the support plate 310 are surrounded by the first support space 301, the first sampling space 3021, the accommodating space 303, the second sampling space 3022 and the second support space 301 arranged in sequence along the second direction Y.

[0073] In some possible implementations, the first reinforcement member 320 may include reinforcement ribs, the first reinforcement member 320 may extend along the first direction X, and a plurality of first reinforcement members 320 may be arranged along the second direction Y at intervals.

[0074] A functional structure may be provided in the accommodating space 303 , and the functional structure may include at least one of a fixing glue 101 , a cooling structure or a smoke exhaust structure.

[0075] refer to Figure 4 and Figure 7 In some embodiments, the support space 301 may be filled with a fixing glue 101 . The fixing glue 101 may be a structural glue or a foaming glue, etc. The fixing glue 101 firmly bonds the battery module 20 and the upper cover 120 .

[0076] In the battery pack of this embodiment, the support member 30 is supported between the battery cell module 20 and the upper cover 120, so that the upper cover 120 is effectively supported, thereby improving the pressure-bearing capacity of the upper cover 120 of the battery pack; in addition, the fixing glue 101 in the support space 301 can firmly bond the upper cover 120 and the battery cell module 20, so that the connection between the battery cell module 20 and the upper cover 120 is more stable, thereby effectively improving the overall strength of the battery pack.

[0077] In the implementation method in which the functional mechanism includes the fixing glue 101, the fixing glue 101 can be filled in the accommodating space 303. The fixing glue 101 in the accommodating space 303 can further firmly bond the battery cell module 20 and the upper cover 120, further improving the connection strength between the upper cover 120 and the battery cell module 20.

[0078] In some embodiments, the battery cell module 20 may include a plurality of battery cell groups, each battery cell group includes a plurality of battery cells 210 , the plurality of battery cells 210 are sequentially arranged along a first direction X, and the plurality of battery cell groups are sequentially arranged along a second direction Y.

[0079] There can be multiple sampling spaces 302 and limiting holes 311, and the number of sampling spaces 302 and limiting holes 311 matches the number of poles 211 in the battery cell module 20. Each limiting hole 311 is arranged in a one-to-one correspondence with each sampling space 302, and each limiting hole 311 is arranged in a one-to-one correspondence with each pole 211.

[0080] This embodiment does not limit the number of support spaces 301 and accommodating spaces 303, as long as the position between two adjacent poles 211 of each battery cell 210 has an accommodating space 303, and the positions of both ends of each battery cell 210 along the second direction Y have support spaces 301.

[0081] refer to Figure 4 and Figure 7 Further, the support space 301 is arranged corresponding to two battery cells 210 adjacent to each other along the second direction Y, that is, the same support space 301 corresponds to two battery cells 210 adjacent to each other along the second direction Y, part of the support space 301 corresponds to one of the two battery cells 210, part of the support space 301 corresponds to the other, and part of the support space 301 corresponds to the gap between the two battery cells 210. In this way, the fixing glue 101 in the support space 301 can not only support the two battery cells 210, but also connect the two battery cells 210, so that the structure of the battery cell module 20 is more stable, and thus the structure of the battery pack is also more stable.

[0082] In some embodiments, the battery pack may further include a bus bar 40 . The bus bar 40 may be disposed in the sampling space 302 . The side of the bus bar 40 facing away from the upper cover 120 may be welded to the pole 211 to conduct the current of the battery cell 210 .

[0083] refer to Figure 5 , Figure 7-Figure 9 The bus 40 is arranged in the sampling space 302, so that the bus 40 and the pole 211 are protected in the sampling space 302 constructed by the support member 30. When the external load in the third direction Z is applied to the top of the battery pack, it is transmitted along the upper cover 120-support member 30-cover plate 213, thereby reducing the stress on the welding parts of the bus 40 and the pole 211, increasing the stability of the connection between the pole 211 and the bus 40, and thereby improving the stability of the charging and discharging performance of the battery pack.

[0084] Optionally, the distance between the side of the busbar 40 facing away from the pole 211 and the support plate 310 can be smaller than the distance between the first reinforcement 320 and the support plate 310, that is, when the battery pack is upright, the top of the busbar 40 is lower than the top of the first reinforcement 320. When an external load in the third direction Z is applied to the top of the battery pack, the stress is borne by the support member 30, making it difficult for the stress to be transmitted to the busbar 40 and the pole 211, thereby increasing the stability of the welding portion of the busbar 40 and the pole 211.

[0085] refer to Figure 5 Optionally, the side of the busbar 40 facing away from the upper cover 120 can be in contact with the support member 30, so that even if the stress from the upper cover 120 is transmitted to the busbar 40, it will be transmitted along the busbar 40-support member 30-cover plate 213, avoiding the stress from being transmitted to the welding part between the busbar 40 and the pole 211, thereby increasing the stability of the electrical connection between the pole 211 and the busbar 40, thereby improving the stability of the charging and discharging performance of the battery pack.

[0086] In some possible implementations, the busbar 40 may be connected to two poles 211 adjacent to each other along the first direction X, as shown in FIG. Fig. 9 The support member 30 further includes a second reinforcement member 330 , which is disposed on a side of the support plate 310 away from the cover plate 213 , and the second reinforcement member 330 is separated between two adjacent bus bars 40 along the first direction X.

[0087] The second reinforcement 330 is disposed between two adjacent bus bars 40 along the first direction X, which can not only separate the two adjacent bus bars 40 along the first direction X, but also further support the upper cover 120, thereby improving the pressure bearing capacity of the upper cover 120 and the structural strength of the entire battery pack.

[0088] refer to Figure 5In some embodiments, the battery pack may further include a sampling harness 50 , which may be disposed in the sampling space 302 , and a sampling terminal 510 of the sampling harness 50 is electrically connected to the bus 40 to collect voltage and temperature of the battery cell 210 .

[0089] The sampling harness 50 is arranged in the sampling space 302, so that the sampling harness 50 is protected in the sampling space 302 together with the bus 40 and the pole 211. When the external load in the third direction Z is applied to the top of the battery pack, the support member 30 and the cover plate 213 are subjected to stress, which reduces the stress on the sampling harness 50, the bus 40 and the pole 211, making it difficult for the sampling harness 50, the bus 40 and the pole 211 to be damaged under the action of stress.

[0090] Furthermore, a first insulating adhesive 520 may be provided between the sampling harness 50 and the bus 40 . The first insulating adhesive 520 can not only fix the sampling harness 50 and the bus 40 , but also serve as a layer of insulating protection between the sampling harness 50 and the bus 40 .

[0091] refer to Figure 5 In some embodiments, a second insulating adhesive 70 may be provided between the cover plate 213 and the support plate 310, and between the pole 211 and the support plate 310. The second insulating adhesive 70 between the pole 211 and the support plate 310 may provide insulation protection between the pole 211 and the support member 30, and between the busbar 40 and the cover plate 213. The second insulating adhesive 70 between the cover plate 213 and the support plate 310 may provide insulation protection between the cover plate 213 and the support member 30.

[0092] The second insulating glue 70 is filled between the cover plate 213 and the support plate 310, and between the pole 211 and the support plate 310, so that there is no gap between the cover plate 213 and the support plate 310, and between the pole 211 and the support plate 310, thereby improving the insulation between the cover plate 213 and the support plate 310, between the pole 211 and the support plate 310, and between the bus 30 and the cover plate 213.

[0093] In addition, the second insulating adhesive 70 can eliminate the gap between the cover plate 213 and the support plate 310 along the third direction Z caused by the tolerance, thereby reducing the influence of the stress along the third direction Z on the pole 211 and the busbar 40 .

[0094] refer to Fig.10 In some embodiments, the bus bar 40 may include a cell connection portion 410 and a sampling connection portion 420 .

[0095] The cell connection portion 410 is configured to be connected to the pole 211 of the cell 210 , and the sampling connection portion 420 is configured to be connected to the sampling harness 50 .

[0096] The following embodiments describe the bus 40 by taking the battery cell 210 of the battery cell module 20 as an example. The top of the bus 40 is the side of the bus 40 facing the upper cover 120 , and the bottom of the bus 40 is the side of the bus 40 facing the battery cell 210 .

[0097] refer to Fig.11 The bottom of the cell connecting portion 410 may include a first supporting area 411 and a pole accommodating area 412 , and the pole accommodating area 412 is recessed upward relative to the first supporting area 411 .

[0098] After the pole 211 of the battery cell 210 is accommodated in the pole accommodating area 412, at least part of the pole 211 is hidden in the bus 40, so that the pole 211 and the bus 40 at least partially overlap along the third direction Z, reducing the space occupied by the bus 40 and the battery cell 210 along the third direction Z.

[0099] refer to Figure 12-14 The top of the cell connecting portion 410 may include a second supporting area 413 and a wiring area 414 , and the wiring area 414 is recessed downward relative to the second supporting area 413 .

[0100] The sampling wire bundle 50 is accommodated in the routing area 414 , and the sampling wire bundle 50 and the bus 40 at least partially overlap along the third direction Z, thereby reducing the space occupied by the bus 40 and the sampling wire bundle 50 along the third direction Z.

[0101] The sampling connection portion 420 can be connected to the edge of the battery cell connection portion 410, the top of the sampling connection portion 420 is recessed downward relative to the second support area 413, the top of the sampling connection portion 420 is connected to the routing area 414, and the sampling terminal 510 of the sampling harness 50 is connected to the top of the sampling connection portion 420, so that the sampling terminal 510 and the bus 40 at least partially overlap along the third direction Z.

[0102] The busbar 40, the pole 211, the sampling harness 50 and the sampling terminal 510 in this embodiment at least partially overlap with the busbar 40 along the third direction Z, thereby reducing the occupied space of the whole formed by the battery cell 210, the busbar 40, the sampling harness 50 and the sampling terminal 510 along the third direction Z, thereby reducing the occupied space of the battery pack along the third direction Z.

[0103] In some possible implementations, there may be two cell connection parts 410 , which are respectively connected to opposite sides of the sampling connection part 420 , and a routing area 414 of at least one cell connection part 410 is connected to the top of the sampling connection part 420 .

[0104] refer to Fig.12In some possible implementations, the two battery cell connection parts 410 may be respectively connected to the two sides of the sampling connection part 420 along the first direction X, and the routing areas 414 of the two battery cell connection parts 410 are both connected to the top of the sampling connection part 420 .

[0105] refer to Fig.12 , Fig.15 and Fig.16 The bus 40 in this embodiment can electrically connect two adjacent poles 211 along the first direction X, wherein one pole 211 is welded to the pole accommodating area 412 of one battery cell connecting portion 410, and the other pole 211 is welded to the pole accommodating area 412 of another battery cell connecting portion 410, and the sampling harness 50 is arranged along the sampling area, and the sampling terminal 510 of the sampling harness 50 is welded to the sampling connecting portion 420.

[0106] Furthermore, the two routing areas 414 may be located on the same side of the bus 40 along the second direction Y, so that the sampling harness 50 may extend along the second direction Y, reducing the bending path of the sampling harness 50 and facilitating the arrangement of the sampling harness 50 .

[0107] refer to Fig.13 In some possible implementations, the two battery cell connection parts 410 can be respectively connected to the two sides of the sampling connection part 420 along the second direction Y, the routing area 414 of one battery cell connection part 410 is connected to the top of the sampling connection part 420, and the second support area 413 of the other battery cell connection part 410 is separated between the routing area 414 and the sampling connection part 420.

[0108] refer to Fig.13 , Fig.15 and Fig.16 , the busbar 40 in this embodiment can be connected between two adjacent poles 211 of the first battery cell 210 and the second battery cell 210, and the first battery cell 210 and the second battery cell 210 are respectively located in two adjacent battery cell groups, so that the busbar 40 can electrically connect the two adjacent battery cell groups. It should be noted that the first battery cell 210 and the second battery cell 210 are adjacently arranged along the second direction Y, the first battery cell 210 is located in one of the two adjacent battery cell groups, the second battery cell 210 is located in the other of the two adjacent battery cell groups, and the first battery cell 210 and the second battery cell 210 are located at the ends of the battery cell groups along the second direction Y. In the specific setting, one pole 211 is welded to the pole accommodating area 412 of one battery cell connecting part 410, and the other pole 211 is welded to the pole accommodating area 412 of another battery cell connecting part 410. The sampling terminal 510 of the sampling harness 50 is welded to the top of the sampling connection portion 420 , and the sampling harness 50 is arranged along the routing area 414 communicating with the sampling connection portion 420 .

[0109] Further, the routing area 414 connected to the sampling connection part 420 may include a first routing area 4141 and a second routing area 4142, the first routing area 4141 is spaced apart from the sampling connection part 420, and the second routing area 4142 is connected between the sampling connection part 420 and the first routing area 4141. The extension direction of the first routing area 4141 may be parallel to the first direction X, and the extension direction of the second routing area 4142 may be parallel to the second direction Y, so that the extension direction of the sampling harness 50 is consistent with the arrangement direction of each battery cell 210 of the battery cell group, so that the arrangement of the sampling harness 50 is more concise and regular, and it is easy to arrange.

[0110] refer to Fig.14 In some possible implementations, the busbar 40 may include a cell connection portion 410 , and the cell connection portion 410 is connected to one side of the sampling connection portion 420 along the first direction X.

[0111] refer to Fig.14 , Fig.15 and Fig.17 The busbar 40 in this embodiment can be connected to the pole 211 at the end of the battery cell group, and the pole 211 can be welded to the pole accommodating area 412 of the battery cell connecting part 410. The sampling terminal 510 of the sampling harness 50 is welded to the top of the sampling connecting part 420, and the sampling harness 50 is arranged along the routing area 414.

[0112] refer to Fig.10 In some embodiments, the cell connection portion 410 may be in the shape of a plate. The first support area 411 constitutes the bottom surface of the cell connection portion 410, and the second support area 413 constitutes the top surface of the cell connection portion 410. The flat cell connection portion 410 has a simpler structure, making the busbar 40 easier to manufacture.

[0113] refer to Figure 5 In some embodiments, an insulating protective layer 60 may be further provided between the support member 30 and the upper cover 120 . The insulating protective layer 60 has insulating properties and may include an insulating film or an insulating plate. The insulating protective layer 60 provides insulating protection between the support member 30 and the upper cover 120 .

[0114] In some embodiments, a potting component may also be provided between the insulating protective layer 60 and the upper cover 120. The potting component has fluidity before curing and has adhesion after curing. The potting component may include a potting glue. The potting component is injected between the insulating protective layer 60 and the upper cover 120. The potting component has a certain fluidity and can be filled into the gap between the insulating protective layer 60 and the upper cover 120, and between the support member 30 and the insulating protective layer 60. After curing, the support member 30, the insulating protective layer 60 and the upper cover 120 can be bonded as a whole, so that the structural strength of the battery pack is higher.

[0115] Furthermore, the insulating protective layer 60 can be constructed with a plurality of connecting holes, which are connected to the supporting space 301 or the accommodating space 303. After the insulating protective layer 60 is laid on the top of the supporting member 30, when the potting glue is injected, the potting glue can flow into the supporting space 301 or the accommodating space 303 through the connecting holes to bond between the fixing glue 101 and the upper cover 120, thereby improving the structural rigidity between the fixing glue 101 and the upper cover 120.

[0116] In the implementation mode where the functional mechanism includes a cooling structure, the cooling structure is configured to cool the pole 211 and the bus 40, and the cooling structure may include a cooling tube. When the battery pack is working, the bus 40 generates Joule heat, and the cooling structure cools the bus 40 and the pole 211 to avoid the problem of excessive temperature of the pole 211 and the bus 40.

[0117] refer to Figure 4 In some possible implementations, the explosion-proof valve 214 can be arranged on the side of the battery cell 210 away from the pole 211, and the fixing glue 101 is arranged on the periphery of the explosion-proof valve 214, that is, the fixing glue 101 avoids the explosion-proof valve 214 area. The explosion-proof valve 214 can be connected to the smoke exhaust channel constructed by the tray 110 to discharge the gas generated when the battery cell 210 has thermal runaway into the external environment of the battery pack, thereby dissipating the heat of the battery pack.

[0118] In some other possible implementations, the explosion-proof valve 214 can be arranged on the side of the battery cell 210 facing the upper cover 120, and the explosion-proof valve 214 is connected to the accommodating space 303. In this embodiment, the functional mechanism may include a smoke exhaust structure, which is connected to the explosion-proof valve 214. The gas generated when the battery cell 210 has thermal runaway is discharged from the explosion-proof valve 214 and discharged into the external environment of the battery pack along the smoke exhaust structure, thereby dissipating the heat of the battery pack.

[0119] Based on the above implementation, an embodiment of the present application also provides a vehicle, including the battery pack provided in the above embodiment.

[0120] In some embodiments, the above-mentioned vehicle may include a body, the body structure has a body floor, an installation opening may be opened on the body floor, the battery pack shell 10 may be connected to the body floor, and the battery pack upper cover 120 blocks the installation opening on the body floor, which can improve the integration of the vehicle and reduce the weight of the vehicle.

[0121] The vehicle in this embodiment includes the battery pack in the above embodiment. The specific structure, working principle and function of the battery pack have been described in detail in the above embodiment, and will not be repeated here. For details, please refer to the description of the above embodiment.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: include: A housing, comprising a tray and an upper cover, wherein the tray and the upper cover are arranged to form a closed accommodating cavity; A battery cell module, comprising a battery cell, wherein the battery cell comprises at least two poles, the battery cell module is arranged in the accommodating cavity, the poles face the upper cover, and a fixing glue is arranged between the battery cell module and the tray; A support member is arranged between the battery cell module and the upper cover, the support member is constructed with a support space, a sampling space and a accommodating space which are connected between the upper cover and the battery cell module, the pole is accommodated in the sampling space, the accommodating space corresponds to the position between two adjacent poles, the support space and the accommodating space are located on opposite sides of the sampling space, and the support space and the accommodating space are both filled with fixing glue.

2. The battery pack according to claim 1, characterized in that: The battery pack further includes a bus bar, which is disposed in the sampling space and connected to the pole; A side of the busbar facing away from the upper cover abuts against the support member.

3. The battery pack according to claim 2, characterized in that: The battery pack further includes a sampling harness, which is disposed in the sampling space, and a sampling terminal of the sampling harness is connected to the bus bar.

4. The battery pack according to claim 3, characterized in that: A first insulating adhesive is provided between the sampling wire harness and the bus bar.

5. The battery pack according to claim 1, characterized in that: The battery cell module includes a plurality of battery cell groups, the battery cell groups include a plurality of battery cells, the plurality of battery cells are sequentially arranged along a first direction, and the plurality of battery cell groups are sequentially arranged along a second direction; The supporting space is arranged corresponding to two of the battery cells adjacent to each other along the second direction.

6. The battery pack according to claim 1, characterized in that: The battery cell comprises a battery cell body and a cover plate, wherein the cover plate is arranged on a side of the battery cell body facing the upper cover, and the support member is arranged between the cover plate and the upper cover.

7. The battery pack according to any one of claims 1 to 6, characterized in that: The battery core further includes an explosion-proof valve, which is arranged on a side of the battery core away from the pole, and the fixing glue is arranged on the periphery of the explosion-proof valve.

8. The battery pack according to any one of claims 1 to 6, characterized in that: An insulating protective layer is also arranged between the support member and the upper cover.

9. The battery pack according to claim 8, characterized in that: A potting component is also arranged between the insulating protection layer and the upper cover.

10. A vehicle, characterized in that: Comprising a battery pack as described in any one of claims 1 to 9.

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