Sampling assembly, battery pack and vehicle

Abstract

The utility model belongs to the technical field of power batteries, and particularly relates to a sampling assembly, a battery pack and a vehicle. The utility model aims to solve the problem of unstable charging and discharging performance of the battery pack in the related technology. According to the sampling assembly, the support is used for being supported between the battery cell cover plate and the upper cover of the battery pack, the busbar and the pole are protected in the sampling space constructed by the support, and when a Z-direction external load is applied to the top of the battery pack, the Z-direction external load is transmitted along the upper cover-support-battery cell cover plate; the stress borne by the connecting part of the busbar and the pole is reduced, so that the connecting stability of the pole and the busbar is improved, and the stability of the charging and discharging performance of the battery pack is further improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of power battery technology, and in particular to a sampling assembly, 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, in vehicles using CTB technology, the Z-direction external load applied to the top of the battery pack is large. These stresses are transmitted to the welding parts of the pole and the aluminum bar, which can easily lead to reduced welding stability, and thus cause unstable charging and discharging performance 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 sampling assembly, a battery pack and a vehicle to solve the technical problem of unstable charging and discharging performance of the battery pack.

[0006] To achieve the above objectives, the present application provides a sampling assembly, including:

[0007] A bracket, comprising a support plate and a plurality of first reinforcement members, wherein the plurality of first reinforcement members are arranged on the same side of the support plate, and the plurality of first reinforcement members are arranged to enclose a sampling space, the support plate is provided with a limiting hole, the limiting hole is communicated with the sampling space, the support plate is used to be stacked on a cover plate of a battery module, and the limiting hole is used to allow the pole of the battery module to pass through;

[0008] A bus bar, which is arranged in the sampling space, the periphery of the bus bar abuts against the support plate, and the bus bar is used to be connected to the pole;

[0009] A sampling harness is arranged in the sampling space, and a sampling terminal of the sampling harness is connected to the bus bar.

[0010] In some embodiments that may include the above-mentioned embodiments, there are multiple limiting holes, and the multiple limiting holes are used to be arranged in one-to-one correspondence with the multiple poles of the battery cell module; the bus is used to connect with two adjacent poles along the first direction.

[0011] In some embodiments that may include the above embodiments, the bracket further includes a second reinforcement member, which is arranged on a side of the support plate facing the first reinforcement member, and the second reinforcement member is separated between two adjacent bus bars along the first direction.

[0012] In some embodiments that may include the above embodiments, the sampling space includes a first sampling space and a second sampling space, the limiting hole includes a first limiting hole and a second limiting hole, the first limiting hole is connected to the first sampling space, the second limiting hole is connected to the second sampling space, and the first limiting hole and the second limiting hole are used for allowing two adjacent poles to pass through.

[0013] In some embodiments that may include the above embodiments, the first reinforcement member further encloses a containing space, and the containing space is located between the first sampling space and the second sampling space; the sampling assembly also includes a fixing glue, and the fixing glue is filled in the containing space.

[0014] In some embodiments that may include the above-mentioned embodiments, the bus includes a battery cell connection part and a sampling connection part; the side of the battery cell connection part facing the support plate includes a first support area and a pole accommodating area, and the side of the battery cell connection part away from the support plate includes a second support area and a wiring area; the pole accommodating area is used to accommodate at least part of the poles of the battery cell module; the sampling connection part is connected to the edge of the battery cell connection part, and the side of the sampling connection part facing the wiring area is adjacent to the wiring area; the sampling harness is arranged in the wiring area, and the sampling terminal of the sampling harness is connected to the sampling connection part.

[0015] In some embodiments, which may include the above embodiments, the first support area abuts the support plate.

[0016] In some embodiments that may include the above embodiments, a first insulating glue is provided between the sampling wire harness and the bus bar.

[0017] An embodiment of the present application also provides a battery pack, comprising the sampling assembly in the above embodiment.

[0018] An embodiment of the present application also provides a vehicle, comprising the battery pack in the above embodiment.

[0019] The sampling assembly, battery pack and vehicle provided in the embodiments of the present application, the bracket is used to support between the battery cover and the battery pack cover, and the bus and the pole are protected in the sampling space constructed by the bracket. When the Z-direction external load is applied to the top of the battery pack, it is transmitted along the upper cover-bracket-battery cell cover, thereby reducing the stress on the connection between the bus and the pole, increasing the stability of the connection between the pole and the bus, and thereby improving the stability of the charging and discharging performance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 A cross-sectional view of a battery pack provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 The enlarged schematic diagram of P1 in the middle;

[0023] Figure 3 A schematic diagram of the structure of the sampling assembly provided in an embodiment of the present application after being connected to a battery cell module;

[0024] Figure 4 for Figure 3 The enlarged schematic diagram of P2 in the middle;

[0025] Figure 5 A schematic diagram of the structure of a bracket in a sampling assembly provided in an embodiment of the present application at a first viewing angle;

[0026] Figure 6 for Figure 5 The enlarged schematic diagram of P3 in the middle;

[0027] Figure 7 Schematic diagram of the structure of the bus in the sampling assembly provided in the embodiment of the present application Figure 1 ;

[0028] Figure 8 Schematic diagram of the structure of the bus in the sampling assembly provided in the embodiment of the present application Figure 2 ;

[0029] Fig. 9 Schematic diagram of the structure of the bus in the sampling assembly provided in the embodiment of the present application Figure 3 ;

[0030] Fig.10 Schematic diagram of the structure of the bus in the sampling assembly provided in the embodiment of the present application Figure 4 ;

[0031] Fig.11 Schematic diagram of the structure of the bus in the sampling assembly provided in the embodiment of the present application Figure 5 ;

[0032] Fig.12 A schematic diagram of the structure of the sampling assembly provided in an embodiment of the present application after the bus and the sampling harness are connected to the battery cell module;

[0033] Fig.13 for Fig.12 The enlarged schematic diagram of P4 in the middle;

[0034] Fig.14 for Fig.12 A magnified schematic diagram of P5 in the figure.

[0035] Description of reference numerals:

[0036] 10. Shell;

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

[0038] 20. Battery cell module;

[0039] 210, battery cell; 211, pole;

[0040] 212. battery cell body; 213. cover plate;

[0041] 30. Bracket;

[0042] 301, support space; 302, sampling space;

[0043] 3021, a first sampling space; 3022, a second sampling space;

[0044] 303, accommodating space; 310, supporting plate;

[0045] 311. Limiting hole; 3111. First limiting hole;

[0046] 3112, second limiting hole; 320, first reinforcement member;

[0047] 330, second reinforcement member;

[0048] 40. Bus;

[0049] 410. Cell connection portion; 411. First support area;

[0050] 412. Pole accommodating area; 413. Second supporting area;

[0051] 414, routing area; 4141, first routing area;

[0052] 4142, second routing area; 415, through hole;

[0053] 420, sampling connection portion;

[0054] 50. Sampling harness;

[0055] 510. sampling terminal; 520. first insulating adhesive. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] As described in the background technology, the battery pack in the related art has the problem of unstable charging and discharging performance. The applicant has found through research that the reason for this problem is that after the battery pack cover is used as a part of the vehicle body floor, the top of the battery pack is subjected to a large Z-direction external load. These stresses will be transmitted downward to the welding parts of the pole and the aluminum bar, resulting in reduced welding stability and even failure of the welding of the aluminum bar and the pole, which in turn leads to the problem of unstable charging and discharging performance of the battery pack.

[0061] In response to the above technical problems, an embodiment of the present application provides a sampling assembly, in which a bracket is used to support between a battery cell cover and a battery pack upper cover, and the bus and the pole are protected in a sampling space constructed by the bracket. When an external load in the Z direction is applied to the top of the battery pack, it is transmitted along the upper cover-bracket-battery cell cover, thereby reducing the stress on the connection between the bus and the pole, increasing the stability of the connection between the pole and the bus, and thereby improving the stability of the charging and discharging performance of the battery pack.

[0062] 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.

[0063] refer to Figure 1-Figure 4 This embodiment provides a sampling assembly, including a bracket 30, a bus 40 and a sampling harness 50.

[0064] It should be noted that the sampling assembly in the embodiment of the present application is used to be disposed in a housing 10 in a battery pack and is connected to a cell module 20 of the battery pack.

[0065] 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 accommodation space. The battery cell module 20 is arranged in the accommodation space. The support structure 30 is arranged between the battery cell module 20 and the upper cover 120 .

[0066] The battery cell module 20 may include a plurality of battery cell groups, each of which includes a plurality of battery cells 210, wherein the plurality of battery cells 210 are sequentially arranged along the first direction X, and the plurality of battery cell groups are sequentially arranged along the second direction Y. The battery cell 210 includes a battery cell body 212, two poles 211, and a cover plate 213, wherein the cover plate 213 covers a side of the battery cell body 212 facing the upper cover 120, and the two poles 211 are spaced apart along the second direction Y on a side of the battery cell body 212 facing the upper cover 120, and extend to the outside of the cover plate 213.

[0067] refer to Figure 2-Figure 6 The bracket 30 includes 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 a 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 sampling space 302 and a receiving space 303. The sampling space 302 corresponds to the position of the pole 211, and the receiving space 303 corresponds to the position between the two poles 211. The support space 301 and the receiving 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.

[0068] 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.

[0069] The busbar 40 and the sampling harness 50 are both disposed in the sampling space 302. The side of the busbar 40 that is away from the upper cover 120 can be welded to the pole 211 to extract the current of the battery cell 210. The sampling terminal 510 of the sampling harness 50 is electrically connected to the busbar 40 to collect the voltage and temperature of the battery cell 210.

[0070] 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 bracket 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-bracket 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.

[0071] 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 bracket 30 and the cover 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.

[0072] 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.

[0073] In some embodiments, the distance between the side of the bus 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 bus 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 bracket 30, making it difficult for the stress to be transmitted to the bus 40 and the pole 211, thereby increasing the stability of the welding portion of the bus 40 and the pole 211.

[0074] 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.

[0075] This embodiment does not limit the number of support spaces 301 and accommodation spaces 303, as long as the position between the two poles 211 of each battery cell 210 has an accommodation space 303, and the positions at both ends of each battery cell 210 along the second direction Y have support spaces 301.

[0076] Further, the support space 301 may be provided corresponding to two battery cells 210 adjacent to each other in the second direction Y, that is, the same support space 301 corresponds to two battery cells 210 adjacent to each other in 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. The support space 301 is supported between the two ends of the battery cell 210 in the second direction Y and the upper cover 120, and when an external load in the third direction Z is applied to the two ends of the battery cell 210 in the second direction Y, the stress is borne by the bracket 30.

[0077] refer to Figure 2 Optionally, the side of the bus structure 40 facing away from the upper cover 120 can be in contact with the support structure 30, so that even if the stress from the upper cover 120 is transmitted to the bus structure 40, it will be transmitted along the bus structure 40-support structure 30-cover plate 213, avoiding the stress from being transmitted to the welding part of the bus structure 40 and the pole 211, thereby increasing the stability of the electrical connection between the pole 211 and the bus structure 40, thereby improving the stability of the charging and discharging performance of the battery pack.

[0078] In some possible implementations, the bus structure 40 may be connected to two poles 211 adjacent to each other along the first direction X, as shown in FIG. Figure 4 The support structure 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 structures 40 along the first direction X.

[0079] The second reinforcement 330 is disposed between two adjacent bus structures 40 along the first direction X, which can not only separate the two adjacent bus structures 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.

[0080] In the bracket 30 corresponding to one battery cell 210, 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 respectively correspond to the positions of the two ends of the cover plate 213 along the second direction Y. 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 arranged 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 reinforcing member 320 and the supporting plate 310 are surrounded by the first supporting space 301, the first sampling space 3021, the accommodating space 303, the second sampling space 3022 and the second supporting space 301 which are arranged in sequence along the second direction Y.

[0081] In some embodiments, the sampling assembly may further include fixing glue, which may be filled in the accommodating space 303 . The fixing glue in the accommodating space 303 may further firmly bond the battery cell module 20 and the upper cover 120 , thereby further improving the connection strength between the upper cover 120 and the battery cell module 20 .

[0082] refer to Figure 2 Optionally, the side of the busbar 40 facing away from the upper cover 120 can be in contact with the bracket 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-bracket 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.

[0083] 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. Figure 4 The bracket 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.

[0084] 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.

[0085] 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 .

[0086] refer to Figure 7 The bus structure 40 may include a cell connection portion 410 and a sampling connection portion 420 .

[0087] 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 .

[0088] The following embodiments describe the bus structure 40 by taking the battery cell 210 of the battery cell module 20 as an example. The top of the bus structure 40 is the side of the bus structure 40 facing the upper cover 120 , and the bottom of the bus structure 40 is the side of the bus structure 40 facing the battery cell 210 .

[0089] refer to Figure 8 The bottom of the cell connecting portion 410 may include a first supporting area 411 and a pole accommodating area 412 . The pole accommodating area 412 and the first supporting area 411 are staggered, and the pole accommodating area 412 is recessed relative to the first supporting area 411 .

[0090] 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 structure 40, so that the pole 211 and the bus structure 40 at least partially overlap along the third direction Z, reducing the space occupied by the bus structure 40 and the battery cell 210 along the third direction Z.

[0091] refer to Figure 9-11 The top of the battery cell connecting portion 410 may include a second supporting area 413 and a wiring area 414 . The wiring area 414 and the second supporting area 413 are staggered, and the wiring area 414 is recessed relative to the second supporting area 413 .

[0092] The sampling harness 50 is accommodated in the routing area 414 , and the sampling harness 50 and the bus structure 40 at least partially overlap along the third direction Z, thereby reducing the space occupied by the bus structure 40 and the sampling harness 50 along the third direction Z.

[0093] The sampling connection portion 420 can be connected to the edge of the battery cell connection portion 410, and the side of the sampling connection portion 420 facing the routing area 414 is adjacent to the routing area 414, and the side of the sampling connection portion 420 facing the routing area 414 is staggered with the routing area 414, and the side of the sampling connection portion 420 facing the routing area 414 is recessed relative 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 structure 40 at least partially overlap along the third direction Z.

[0094] The bus structure 40, the pole 211, the sampling harness 50 and the sampling terminal 510 in this embodiment all at least partially overlap with the bus structure 40 along the third direction Z, thereby reducing the occupied space of the whole formed by the battery cell 210, the bus structure 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.

[0095] 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 adjacent to the sampling connection part 420 .

[0096] refer to Fig.12 In 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 adjacent to the sampling connection part 420 .

[0097] refer to Fig. 9 , Fig.12 and Fig.13 The bus structure 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 connection part 410, and the other pole 211 is welded to the pole accommodating area 412 of another battery cell connection part 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 connection part 420.

[0098] Furthermore, the two routing areas 414 may be located on the same side of the bus structure 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 .

[0099] refer to Fig.10In 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 adjacent to 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.

[0100] refer to Fig.10 , Fig.12 and Fig.13 , the bus structure 40 in this embodiment can be connected between two adjacent poles 211 of the first battery cell and the second battery cell, and the first battery cell and the second battery cell are respectively located in two adjacent battery cell groups, so that the bus structure 40 can electrically connect the two adjacent battery cell groups. It should be noted that the first battery cell and the second battery cell are arranged adjacent to each other along the second direction Y, the first battery cell is located in one of the two adjacent battery cell groups, the second battery cell is located in the other of the two adjacent battery cell groups, and the first battery cell and the second battery cell are located at the ends of the battery cell groups along the second direction Y. When specifically set, one pole 211 is welded to the pole accommodating area 412 of one battery cell connection part 410, and the other pole 211 is welded to the pole accommodating area 412 of another battery cell connection part 410. The sampling terminal 510 of the sampling harness 50 is welded to the top of the sampling connection part 420, and the sampling harness 50 is arranged along the routing area 414 connected to the sampling connection part 420.

[0101] 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.

[0102] refer to Fig.11 In some possible implementations, the bus structure 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.

[0103] refer to Fig.11 , Fig.12 and Fig.14The bus structure 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.

[0104] refer to Figure 7 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 structure 40 easier to manufacture.

[0105] In some embodiments, the above-mentioned pole accommodating area 412 can correspond to the second support area 413, so that after the pole accommodating area 412 is recessed relative to the routing area 414, the portion of the second support area 413 corresponding to the pole accommodating area 412 does not bulge as the pole accommodating area 412 is recessed, thereby reducing the space occupied by the bus structure 40 along the third direction Z, and thereby reducing the space occupied by the battery pack along the third direction Z.

[0106] The routing area 414 can correspond to the first support area 411, so that after the routing area 414 is recessed relative to the second support area 413, the portion of the first support area 411 corresponding to the routing area 414 does not bulge as the routing area 414 is recessed, thereby reducing the space occupied by the bus structure 40 along the third direction Z, and thereby reducing the space occupied by the battery pack along the third direction Z.

[0107] In some embodiments, the sampling connection portion 420 is staggered with the first support area 411 on one side thereof, and the sampling connection portion 420 is recessed relative to the sampling connection portion 420 on the side thereof facing the first support area 411, so that the thickness of the sampling connection portion 420 along the third direction Z is increased, thereby improving the strength of the confluence structure 40.

[0108] In some possible implementations of the embodiments of the present application, a through hole 415 may be opened in the center of the pole accommodating area 412, and the through hole 415 passes through the battery cell connecting part 410. The through hole 415 is used to correspond to the center of the pole 211. When the bus structure 40 is welded to the pole 211, the welder can observe through the through hole 415 whether the pole accommodating area 412 is aligned with the pole 211 to ensure that the bus structure 40 is welded in place.

[0109] The battery pack in this embodiment includes the sampling assembly in the above embodiment. The specific structure, working principle and function of the sampling assembly 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.

[0110] The vehicle in this embodiment includes a battery pack, and the battery pack includes the sampling assembly in the above embodiment. The specific structure, working principle and function of the sampling assembly 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.

[0111] 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 sampling assembly, characterized in that: include: A bracket, comprising a support plate and a plurality of first reinforcement members, wherein the plurality of first reinforcement members are arranged on the same side of the support plate, and the plurality of first reinforcement members are arranged to enclose a sampling space, the support plate is provided with a limiting hole, the limiting hole is communicated with the sampling space, the support plate is used to be stacked on a cover plate of a battery module, and the limiting hole is used to allow the pole of the battery module to pass through; A bus bar, which is arranged in the sampling space, the periphery of the bus bar abuts against the support plate, and the bus bar is used to be connected to the pole; A sampling harness is arranged in the sampling space, and a sampling terminal of the sampling harness is connected to the bus bar.

2. The sampling assembly according to claim 1, characterized in that: There are a plurality of the limiting holes, and the plurality of the limiting holes are used to be arranged in one-to-one correspondence with the plurality of poles of the battery cell module; The busbar is used to connect two adjacent poles along a first direction.

3. The sampling assembly according to claim 2, characterized in that: The bracket further includes a second reinforcement member, which is disposed on a side of the support plate facing the first reinforcement member, and the second reinforcement member is separated between two adjacent bus bars along the first direction.

4. The sampling assembly according to any one of claims 1 to 3, characterized in that: The sampling space includes a first sampling space and a second sampling space, and the limiting hole includes a first limiting hole and a second limiting hole, the first limiting hole is connected to the first sampling space, and the second limiting hole is connected to the second sampling space, and the first limiting hole and the second limiting hole are respectively used for two adjacent poles to pass through.

5. The sampling assembly according to claim 4, characterized in that: The first reinforcement member is further surrounded by a containing space, and the containing space is located between the first sampling space and the second sampling space; The sampling assembly includes fixing glue, and the fixing glue is filled in the accommodating space.

6. The sampling assembly according to any one of claims 1 to 3, characterized in that: The busbar includes a cell connection portion and a sampling connection portion; The side of the cell connection portion facing the support plate includes a first support area and a pole accommodating area, and the side of the cell connection portion facing away from the support plate includes a second support area and a wiring area; The pole accommodating area is used to accommodate at least part of the poles of the battery cell module; The sampling connection portion is connected to the edge of the cell connection portion, and the sampling connection portion is adjacent to the wiring area on a side facing the wiring area; The sampling harness is arranged in the wiring area, and a sampling terminal of the sampling harness is connected to the sampling connection portion.

7. The sampling assembly according to claim 6, characterized in that: The first supporting area abuts against the supporting plate.

8. The sampling assembly according to any one of claims 1 to 3, characterized in that: A first insulating adhesive is provided between the sampling wire harness and the bus bar.

9. A battery pack, characterized in that: Comprising the sampling assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that: Comprising the battery pack as claimed in claim 9.

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