Support assembly, battery and battery pack

Abstract

The utility model provides a kind of support assembly, battery and battery pack, the support assembly is used for battery, the battery includes multiple battery monomers, the support assembly includes first support and second support, the first support and the second support are suitable for fixing multiple battery monomers;Wherein, the first support and the second support are symmetrically arranged, so that first support and second support can share a set of mould, so as to save the mould opening expense of support assembly.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a support assembly, a battery, and a battery pack. Background Technology

[0002] In related technologies, the support assembly for fixing multiple cylindrical battery cells includes an upper support and a lower support, and the overall mold cost of the upper and lower supports is relatively high. Utility Model Content

[0003] The embodiments of this utility model provide a bracket assembly, a battery, and a battery pack, which can improve the technical problem of high mold costs for upper and lower brackets in related technologies.

[0004] In a first aspect, embodiments of the present invention provide a support assembly for a battery, the battery comprising a plurality of battery cells, the support assembly comprising a first support and a second support, the first support and the second support being adapted to fix the plurality of battery cells; wherein the first support and the second support are symmetrically arranged.

[0005] By configuring the bracket assembly that holds multiple battery cells as a first bracket and a second bracket, and symmetrically arranging the first and second brackets, a single mold can be used for both, thus saving on mold-making costs for the bracket assembly. Furthermore, due to the symmetrical structure of the first and second brackets, blind assembly can be achieved during the assembly of the bracket assembly with multiple battery cells, thereby saving assembly production time.

[0006] In one embodiment, the first bracket includes a plurality of first connecting parts, and the second bracket includes a plurality of second connecting parts, with each first connecting part corresponding to a second connecting part. By providing a plurality of first connecting parts on the first bracket and a plurality of second connecting parts on the second bracket, and establishing a one-to-one correspondence between the plurality of first connecting parts and the plurality of second connecting parts, a fixed connection is achieved between the first bracket, the second bracket, and the plurality of battery cells.

[0007] In one embodiment, the first bracket has a plurality of first connecting portions at one end facing the second bracket, each first connecting portion extending along the height direction of the battery cell. The second bracket has a plurality of second connecting portions at one end facing the first bracket, each second connecting portion extending along the height direction of the battery cell. The end of each first connecting portion is connected to the end of a second connecting portion. By placing the plurality of first connecting portions of the first bracket at one end facing the second bracket and the plurality of second connecting portions of the second bracket at one end facing the first bracket, with each first and second connecting portion extending along the height direction of the battery cell and the end of each first connecting portion connected to the end of a second connecting portion, the first and second connecting portions are configured to extend and connect in opposite directions along the height direction of the battery cell. This replaces the long screw used to connect the upper and lower brackets in related technologies, thereby improving the efficiency of the assembly and alignment operation between the first and second brackets.

[0008] In one embodiment, the support assembly further includes a plurality of support connectors, each of which connects a first connecting portion and a second connecting portion. By using the plurality of support connectors, a one-to-one correspondence is formed between the plurality of first connecting portions of the first support and the plurality of second connecting portions of the second support, thereby enabling a stable connection between the first support and the second support.

[0009] In one embodiment, the first connecting part is provided with a first through hole, and the second connecting part is provided with a second through hole. One end of the connector is fixed in the first through hole, and the other end of the connector is fixed in the second through hole. This facilitates the rapid assembly and connection of the bracket connector, the first connecting part of the first bracket, and the second connecting part of the second bracket. It also facilitates the subsequent disassembly and assembly of the first bracket and the second bracket, as well as the repair and replacement of the battery cells, by removing multiple bracket connectors.

[0010] In one embodiment, the first connecting portion includes a first connecting post and a plurality of first reinforcing parts, which are arranged circumferentially around the first connecting post. By setting the first connecting portion as a structure in which the first connecting post and the plurality of first reinforcing parts are circumferentially surrounding the first connecting post, the structural strength of the first connecting portion is enhanced while the weight of the first bracket is reduced.

[0011] In one embodiment, the second connecting portion includes a second connecting post and a plurality of second reinforcing parts, with the plurality of first reinforcing parts arranged circumferentially around the first connecting post. By setting the second connecting portion as a structure in which the second connecting post and the plurality of second reinforcing parts circumferentially surround the second connecting post, the structural strength of the second connecting portion is enhanced while the weight of the second bracket is reduced.

[0012] In one embodiment, the first bracket includes a first main body portion, which has multiple rows of first fixing slots, and each first connecting portion is disposed between two adjacent rows of first fixing slots. When the first fixing slots of the first bracket are configured to fix cylindrical battery cells, the cross-sections of the multiple first fixing slots are all circular. The surface area of ​​the longitudinal connecting portion between two adjacent rows of first fixing slots is much larger than the surface area of ​​the transverse connecting portion between two adjacent first fixing slots in the same row, which is beneficial for setting a first connecting portion with a larger surface area, thereby enhancing the structural strength of the first connecting portion.

[0013] In one embodiment, the second bracket includes a second main body portion, which has multiple rows of second fixing slots. Each second connecting portion is disposed between two adjacent rows of second fixing slots. When the second fixing slots of the second bracket are configured to fix cylindrical battery cells, the cross-sections of the multiple second fixing slots are all circular. The surface area of ​​the longitudinal connecting portion between two adjacent rows of second fixing slots is much larger than the surface area of ​​the transverse connecting portion between two adjacent second fixing slots in the same row. This facilitates the provision of a second connecting portion with a larger surface area, thereby enhancing the structural strength of the second connecting portion.

[0014] In one embodiment, the first fixing groove includes a first bottom wall adapted to abut against one end of the battery cell, and the first bottom wall has a first opening adapted to avoid one of the terminals of the battery cell; and / or, the second fixing groove includes a second bottom wall adapted to abut against the other end of the battery cell, and the second bottom wall has a second opening adapted to avoid the other terminal of the battery cell.

[0015] In one embodiment, the first bracket or the second bracket further includes a plurality of housing fixing parts, which are used to fix the battery to the housing. The plurality of housing fixing parts are disposed around the plurality of first connecting parts or the plurality of second connecting parts. During the battery pack assembly process, a plurality of individual battery cells are first fixed in a plurality of first fixing slots of the first bracket and a plurality of second fixing slots of the second bracket. Then, a plurality of bracket connectors are connected to the plurality of first connecting parts of the first bracket and the plurality of second connecting parts of the second bracket to form a battery module. The battery module is then connected and fixed to the housing. Therefore, the plurality of housing fixing parts are disposed around the plurality of first connecting parts or the plurality of second connecting parts for easy assembly.

[0016] Secondly, an embodiment of the present invention provides a battery, the battery comprising: the aforementioned support assembly; and a plurality of battery cells, wherein the plurality of battery cells are fixed to the support assembly.

[0017] Thirdly, embodiments of the present invention provide a battery pack, the battery pack comprising: a housing; and the aforementioned battery, the battery being disposed within the housing.

[0018] The beneficial effects of the embodiments of this utility model are as follows: In embodiments of this invention, the bracket assembly for fixing multiple battery cells is configured as a first bracket and a second bracket, which are symmetrically arranged. Therefore, the first and second brackets can share a single mold, thus saving on mold-making costs for the bracket assembly. Furthermore, due to the symmetrical structure of the first and second brackets, blind assembly can be achieved during the assembly of the bracket assembly with the multiple battery cells, thereby saving assembly production time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the battery provided in an embodiment of the present invention. Figure 2 This is a three-dimensional structural view of the battery provided in an embodiment of the present invention; Figure 3 This is an exploded view of the battery support assembly provided in an embodiment of this utility model; Figure 4 This is a cross-sectional view of the battery support assembly provided in an embodiment of the present invention; Figure 5 This is a perspective view of the first bracket of the battery bracket assembly provided in an embodiment of the present invention; Figure 6 This is a perspective view of the second bracket of the battery bracket assembly provided in an embodiment of the present invention.

[0021] 10. Bracket assembly; 20. Battery; 1. First bracket; 11. First main body; 111. First fixing groove; 112. First bottom wall; 113. First opening; 12. First connecting part; 121. First connecting post; 122. First reinforcing part; 123. First through hole; 13. First housing fixing part; 14. First connecting row fixing part; 2. Second bracket; 21. Second main body; 211. Second fixing groove; 212. Second bottom wall; 213. Second opening; 22. Second connecting part; 221. Second connecting column; 222. Second reinforcing part; 223. Second through hole; 23. Second housing fixing part; 24. Second connecting row fixing part; 3. Battery cell; 31. One of the terminals; 32. The other terminal; 51. Bracket connector; 52. Fastener; 53. Box connector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0023] In related technologies, the support assembly for fixing multiple cylindrical battery cells includes an upper support and a lower support, and the overall mold cost of the upper and lower supports is relatively high.

[0024] Embodiments of this application provide a battery pack, which can be a power battery pack or an energy storage battery pack. For example... Figure 1 As shown, the battery pack includes a housing (not shown) and batteries 20, which are housed and secured inside the housing. As an example, the battery 20 includes multiple individual battery cells 3, which are first assembled into a battery module and then housed within the housing. Each individual battery cell 3 is the smallest unit for storing and outputting electrical energy. The individual battery cell 3 can be a secondary or primary battery. The individual battery cell 3 can be, but is not limited to, metal batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries. The individual battery cell 3 can be cylindrical, flat, cuboid, or other shapes.

[0025] Embodiments of this application provide a battery 20, such as Figure 1 and Figure 2As shown, the battery 20 includes multiple battery cells 3 and a support assembly 10. The support assembly 10 includes a first support 1 and a second support 2. The multiple battery cells 3 are fixed between the first support 1 and the second support 2, wherein the first support 1 and the second support 2 are symmetrically arranged.

[0026] By constructing a support assembly 10 with symmetrical first bracket 1 and second bracket 2 to fix multiple battery cells 3, the support assembly 10 can be produced using a single mold due to the symmetrical structure of the first bracket 1 and second bracket 2. In contrast to related technologies where the upper and lower brackets of the support assembly have different structures and therefore require two sets of modules for production, the support assembly 10 provided in this application can be produced using a single module, effectively saving mold-making costs and reducing production costs. Analysis by the applicant revealed that the mold-making cost for the battery structural components of the support assembly 10 using symmetrical first bracket 1 and second bracket 2 accounts for 8% to 10% of the corresponding battery pack design cost, while in related technologies with asymmetrical upper and lower brackets, the mold-making cost for the battery structural components accounts for 15% to 20% of the corresponding battery pack design cost. Furthermore, because the first bracket 1 and second bracket 2 are completely symmetrical, they can be blind-assembled, thus saving production time.

[0027] In some embodiments, such as Figures 3 to 6 As shown, the first bracket 1 includes multiple first connecting parts 12, and the second bracket 2 includes multiple second connecting parts 22. Each first connecting part 12 is connected to a corresponding second connecting part 22. By setting multiple first connecting parts 12 on the first bracket 1 and multiple second connecting parts 22 on the second bracket 2, and connecting the multiple first connecting parts 12 and the multiple second connecting parts 22 in a one-to-one correspondence, a fixed connection is achieved between the first bracket 1, the second bracket 2, and the multiple battery cells 3. Compared to related technologies, where the upper and lower brackets of the bracket assembly need to be connected and fixed by long screws, in actual production, the long screws need to be aligned with the assembly holes of the upper and lower brackets respectively, which is difficult and time-consuming. However, in the embodiment of this application, by correspondingly connecting the multiple first connecting parts 12 of the first bracket 1 to the multiple second connecting parts 22 of the second bracket 2, the assembly difficulty is reduced, thereby saving production time.

[0028] In some embodiments, continue to refer to Figures 3 to 6 The first bracket 1 includes a first main body 11 and a plurality of first connecting parts 12 connected to the bottom surface of the first main body 11. A plurality of first fixing grooves 111 are also provided at the bottom of the first main body 11, and one end of each battery cell 3 is fixed in a first fixing groove 111.

[0029] The second bracket 2 includes a second main body 21 and a plurality of second connecting parts 22 connected to the bottom surface of the second main body 21. A plurality of second fixing grooves 211 are also provided at the bottom of the second main body 21, and the other end of each battery cell 3 is fixed in a second fixing groove 211.

[0030] The battery cell 3 is fixed by fixing one end of each battery cell 3 to a first fixing groove 111 at the bottom of the first main body 11 of the first bracket 1 and fixing the other end of each battery cell 3 to a second fixing groove 211 at the bottom of the second main body 21 of the second bracket 2.

[0031] As an example, the battery cell 3 is set to be cylindrical, and the cross-sections of the first fixing groove 111 and the second fixing groove 211 are both set to be circular.

[0032] In some embodiments, continue to refer to Figures 3 to 6 The first main body 11 of the first bracket 1 has a plurality of first connecting portions 12 at one end facing the second bracket 2, each first connecting portion 12 extending along the height direction of the battery cell 3. The second main body 21 of the second bracket 2 has a plurality of second connecting portions 22 at one end facing the first bracket 1, each second connecting portion 22 extending along the height direction of the battery cell 3, and the end of each first connecting portion 12 connecting to the end of the second connecting portion 22. By setting the plurality of first connecting portions 12 of the first bracket 1 at one end facing the second bracket 2, and setting the plurality of second connecting portions 22 of the second bracket 2 at one end facing the first bracket 1, with each first connecting portion 12 and each second connecting portion 22 extending along the height direction of the battery cell 3, and the end of each first connecting portion 12 connecting to the end of the second connecting portion 22, the first connecting portions 12 and the second connecting portions 22 are configured to extend and connect in opposite directions along the height direction of the battery cell 3, thereby replacing the long screw used to connect the upper and lower brackets in related technologies, and thus improving the efficiency of the assembly and alignment operation between the first bracket 1 and the second bracket 2.

[0033] In some embodiments, continue to refer to Figures 3 to 6The first connecting portion 12 of the first bracket 1 includes a first connecting post 121, and the second connecting portion 22 of the second bracket 2 includes a second connecting post 221. The end of the first connecting post 121 is connected to the end of the second connecting post 122, thereby achieving the connection and fixation between the first bracket 1, the second bracket 2, and the multiple battery cells 3. Compared with related technologies, where the upper and lower brackets used to fix the multiple battery cells are fixed by long screws, the long screws need to be aligned and connected with the assembly holes of the upper and lower brackets respectively, which is difficult and time-consuming to assemble. In the embodiments of this application, by connecting the end of the first connecting post 121 and the end of the second connecting post 221, the operation is convenient and it is beneficial to save production time.

[0034] In some embodiments, the bracket assembly 10 further includes a plurality of bracket connectors 51 and a plurality of fasteners 52. Each bracket connector 51 connects a first connecting portion 12 of the first bracket 1 and a second connecting portion 22 of the second bracket 2. By using the plurality of bracket connectors 51 and the plurality of fasteners 52, a one-to-one correspondence is formed between the plurality of first connecting portions 12 of the first bracket 1 and the plurality of second connecting portions 22 of the second bracket 2, thereby forming a stable connection between the first bracket 1 and the second bracket 2.

[0035] In a specific embodiment, the bracket connector 51 can be a common standard bolt, and the fastener 52 can be a common standard nut, thereby replacing the use of long screws for fixing the upper and lower brackets in related technologies, thus effectively reducing the material cost of the bracket assembly 10.

[0036] In some embodiments, each first connecting portion 12 of the first bracket 1 is provided with a first through hole 123, and each second connecting portion 22 of the second bracket 2 is provided with a second through hole 223. One end of the bracket connector 51 is fixed in the first through hole 123, and the other end of the bracket connector 51 is fixed in the second through hole 223 by a fastener 52. This facilitates the quick assembly and connection of the bracket connector 51, the fastener 52, the first connecting portion 12 of the first bracket 1, and the second connecting portion 22 of the second bracket 2. It also facilitates the subsequent disassembly and assembly of the first bracket 1 and the second bracket 2 by removing multiple bracket connectors 51, as well as the repair and replacement of the battery cell 3.

[0037] In some embodiments, such as Figures 3 to 5As shown, each first connecting portion 12 of the first support 1 includes a first connecting post 121 and a plurality of first reinforcing portions 122, which are arranged circumferentially around the first connecting post 121. By configuring the first connecting portion 12 as a structure in which the first connecting post 121 and the plurality of first reinforcing portions 122 circumferentially surround the first connecting post 121, the structural strength of the first connecting portion 12 is enhanced while reducing the weight of the first support 1. As an example, the first reinforcing portion 122 includes fins.

[0038] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, each second connecting portion 22 of the second support 2 includes a second connecting post 221 and a plurality of second reinforcing portions 222, which are arranged circumferentially around the second connecting post 221. By configuring the second connecting portion 22 as a structure in which the second connecting post 221 and the plurality of second reinforcing portions 222 circumferentially surround the second connecting post 221, the structural strength of the second connecting portion 22 is enhanced while reducing the weight of the second support 2. As an example, the second reinforcing portion 222 includes fins.

[0039] In some embodiments, such as Figures 3 to 5 As shown, the first bracket 1 includes a first main body 11, which has multiple rows of first fixing slots 111. Each first connecting part 12 is disposed between two adjacent rows of first fixing slots 111. When the first fixing slots 111 of the first bracket 1 are used to fix cylindrical battery cells, the cross-sections of the multiple first fixing slots 111 are all circular. The surface area of ​​the longitudinal connecting part between two adjacent rows of first fixing slots 111 is much larger than the surface area of ​​the transverse connecting part between two adjacent first fixing slots 111 in the same row. This facilitates the provision of a first connecting part 12 with a larger surface area, thereby enhancing the structural strength of the first connecting part 12.

[0040] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, the second bracket 2 includes a second main body 21, which has multiple rows of second fixing slots 211. Each second connecting part 22 is disposed between two adjacent rows of second fixing slots 211. When the second fixing slots 211 of the second bracket 2 are configured to fix cylindrical battery cells, the cross-sections of the multiple second fixing slots 211 are all circular. The surface area of ​​the longitudinal connecting part between two adjacent rows of second fixing slots 211 is much larger than the surface area of ​​the transverse connecting part between two adjacent second fixing slots 211 in the same row. This facilitates the provision of a second connecting part 22 with a larger surface area, thereby enhancing the structural strength of the second connecting part 22.

[0041] In some embodiments, such as Figures 3 to 5 As shown, the first fixing groove 111 of the first bracket 1 includes a first bottom wall 112, which is adapted to abut one end of the battery cell 3. A first opening 113 is also provided on the first bottom wall 112, which is adapted to avoid one of the terminals of the battery cell 3. The second fixing groove 211 of the second bracket 2 includes a second bottom wall 212, which is adapted to abut the other end of the battery cell 3. A second opening 213 is also provided on the second bottom wall 212, which is adapted to avoid the other terminal of the battery cell 3.

[0042] By abutting one end of the battery cell 3 against the first bottom wall 112 of the first fixing groove 111 of the first bracket 1, and abutting the other end of the battery cell 3 against the second bottom wall 212 of the second fixing groove 211 of the second bracket 2, the battery cell 3 is stably fixed along the height direction. Simultaneously, a first opening 113 is provided on the first bottom wall 112 of the first fixing groove 111 of the first bracket 1, through which one of the terminals of the battery cell 3 is exposed, facilitating electrical connection between the busbar and the terminal of the battery cell 3. Similarly, a second opening 213 is provided on the second bottom wall 212 of the second fixing groove 211 of the second bracket 2, through which the other terminal of the battery cell 3 is exposed, facilitating electrical connection between the busbar and the terminal of the battery cell 3.

[0043] In some embodiments, the first bracket 1 or the second bracket 2 further includes a plurality of housing fixing parts for fixing the battery to the housing. These housing fixing parts are disposed around the plurality of first connecting parts 12 or the plurality of second connecting parts 22. During the battery pack assembly process, multiple battery cells 3 are first fixed in the plurality of first fixing slots 111 of the first bracket 1 and the plurality of second fixing slots 211 of the second bracket 2. Then, multiple bracket connectors 51 are connected to the plurality of first connecting parts 12 of the first bracket 1 and the plurality of second connecting parts 22 of the second bracket 2 to form a battery module. The battery module is then connected and fixed to the housing. Therefore, the multiple housing fixing parts are disposed around the plurality of first connecting parts 12 or the plurality of second connecting parts 22 for convenient assembly.

[0044] In some embodiments, the housing fixing part of the first bracket 1 or the second bracket 2 is provided as a threaded hole, and the bracket assembly 10 further includes a housing connector 53, which passes through the threaded hole of the first bracket 1 or the second bracket 2 and the threaded hole on the housing and is fixed by fastening bolts.

[0045] As an example, such as Figures 3 to 6As shown, the first bracket 1 includes multiple first housing fixing parts 13, each of which can be a threaded hole. Another threaded hole is provided on the housing, allowing bolts to pass sequentially through the threaded holes on the first bracket 1 and the housing, and then secured with nuts. The second bracket 2 includes multiple second housing fixing parts 23, each of which can be a threaded hole. Another threaded hole is provided on the housing, allowing bolts to pass sequentially through the threaded holes on the second bracket 2 and the housing, and then secured with nuts.

[0046] In some embodiments, the first bracket 1 or the second bracket 2 includes at least one connecting bar fixing part, which is used to fix at least one connecting bar onto the first bracket 1 or the second bracket 2. The at least one connecting bar fixing part is disposed around the periphery of the plurality of first connecting parts 12 or the plurality of second connecting parts 22. During the battery pack assembly process, the plurality of battery cells 3 are first fixed in the plurality of first fixing slots 111 of the first bracket 1 and the plurality of second fixing slots 211 of the second bracket 2. Then, the plurality of bracket connectors 51 are connected to the plurality of first connecting parts 12 of the first bracket 1 and the plurality of second connecting parts 22 of the second bracket 2. Finally, the plurality of connecting bars are connected to the plurality of terminals of the plurality of battery cells 3, wherein the output connecting bar located at the tail end is fixed by the connecting bar fixing part.

[0047] As an example, such as Figures 3 to 6 As shown, the first bracket 1 includes at least one first connecting strip fixing part 14, which can be a threaded hole. Another threaded hole is provided on the connecting strip, and a bolt can pass through the threaded hole on the connecting strip and the threaded hole on the first bracket 1 in sequence, and be fixed by a nut. The second bracket 2 includes at least one second connecting strip fixing part 24, which can be a threaded hole. Another threaded hole is provided on the connecting strip, and a bolt can pass through the threaded hole on the connecting strip and the threaded hole on the second bracket 2 in sequence, and be fixed by a nut.

[0048] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A support assembly (10) for a battery (20), said battery comprising a plurality of battery cells (3), characterized in that, The bracket assembly (10) includes a first bracket (1) and a second bracket (2), the first bracket (1) and the second bracket (2) being adapted to fix a plurality of battery cells (3); wherein the first bracket (1) and the second bracket (2) are symmetrically arranged.

2. The support assembly (10) according to claim 1, characterized in that, The first bracket (1) includes a plurality of first connecting parts (12), and the second bracket (2) includes a plurality of second connecting parts (22), with each first connecting part (12) corresponding to a second connecting part (22).

3. The support assembly (10) according to claim 2, characterized in that, The first bracket (1) has a plurality of first connecting parts (12) at one end facing the second bracket (2), each of the first connecting parts (12) being configured to extend along the height direction of the battery cell (3). The second bracket (2) has a plurality of second connecting parts (22) at one end facing the first bracket (1), each of the second connecting parts (22) being configured to extend along the height direction of the battery cell (3).

4. The support assembly (10) according to claim 3, characterized in that, The bracket assembly (10) further includes a plurality of bracket connectors (51), each of the bracket connectors (51) being connected to a first connecting part (12) and a second connecting part (22).

5. The support assembly (10) according to claim 4, characterized in that, The first connecting part (12) is provided with a first through hole (123), the second connecting part (22) is provided with a second through hole (223), one end of the bracket connector (51) is fixed in the first through hole (123), and the other end of the bracket connector (51) is fixed in the second through hole (223).

6. The support assembly (10) according to claim 2, characterized in that, The first connecting part (12) includes a first connecting post (121) and a plurality of first reinforcing parts (122), and the plurality of first reinforcing parts (122) are arranged at intervals along the circumference of the first connecting post (121); And / or, the second connecting portion (22) includes a second connecting post (221) and a plurality of second reinforcing portions (222), wherein the plurality of first reinforcing portions (122) are arranged circumferentially at intervals along the first connecting post (121).

7. The support assembly (10) according to claim 2, characterized in that, The first bracket (1) includes a first main body (11), which is provided with multiple rows of first fixing slots (111), and each first connecting part (12) is disposed between two adjacent rows of first fixing slots (111). And / or, the second bracket (2) includes a second main body (21), the second main body (21) is provided with multiple rows of second fixing slots (211), and each second connecting part (22) is disposed between two adjacent rows of second fixing slots (211).

8. The support assembly (10) according to claim 7, characterized in that, The first fixing groove (111) includes a first bottom wall (112), the first bottom wall (112) is adapted to abut against one end of the battery cell (3), and the first bottom wall (112) is provided with a first opening (113), the first opening (113) is adapted to avoid one of the terminals (31) of the battery cell (3); And / or, the second fixing groove (211) includes a second bottom wall (212) adapted to abut against the other end of the battery cell (3), and the second bottom wall (212) is provided with a second opening (213) adapted to avoid another terminal post (32) of the battery cell (3).

9. The support assembly (10) according to any one of claims 2 to 7, characterized in that, The first bracket (1) or the second bracket (2) further includes a plurality of housing fixing parts (13, 23), which are used to fix the battery (20) to the housing. The plurality of housing fixing parts (13, 23) are disposed around the plurality of first connecting parts (12) or the plurality of second connecting parts (22).

10. A battery (20), characterized in that, The battery includes: The support assembly (10) according to any one of claims 1 to 8; Multiple battery cells (3) are fixed to the bracket assembly (10).

11. A battery pack, characterized in that, The battery pack includes: Box; The battery (20) of claim 9, wherein the battery (20) is disposed within the housing.

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