Battery cell mounting seat, battery module and battery pack

Abstract

The utility model provides a battery cell mounting seat, a battery module and a battery pack. The battery module comprises a mounting plate (1) and a supporting part (2), the supporting part (2) is arranged at the end of the mounting plate (1) in the Y-axis direction, the supporting part (2) comprises a supporting section (21) and fixing sections (22) located at the two ends of the supporting section (21), and the supporting section (21) extends towards the outer side of the supporting part (2) in the X-axis direction and protrudes out of the mounting plate (1). According to the battery cell mounting seat, the battery module and the battery pack provided by the utility model, the problem of insufficient welding of a welding spot caused by lack of effective support in the welding process of a tab and a busbar of the existing battery module can be solved.

Description

Technical Field

[0001] This utility model relates to the field of battery processing and manufacturing technology, specifically to a cell mounting base, a battery module, and a battery pack. Background Technology

[0002] Lithium-ion batteries, especially solid-state batteries, have garnered significant attention in the electric vehicle energy storage field due to their revolutionary energy storage solutions, characterized by high safety, high energy density, and long lifespan. They are considered a key direction for future battery technology development. Compared to traditional liquid electrolyte lithium-ion batteries, solid-state batteries use solid electrolytes instead of liquids, significantly improving battery stability and safety, especially in extreme environments. However, battery module assembly faces significant challenges, particularly in the welding of the tabs and busbars.

[0003] Typically, the tabs and busbars in a battery module are connected using resistance welding or laser welding to achieve series or parallel connection between cells and construct a complete battery system. However, during the welding process, the tabs and busbars lack effective support and are prone to displacement or deformation due to the instantaneous high temperature and pressure generated during welding, resulting in poor weld quality and incomplete solder joints. Incomplete solder joints not only reduce the conductivity of the battery module and affect its overall performance, but may also lead to safety hazards, such as localized overheating or unstable connections between cells, severely reducing the product quality and safety of solid-state batteries. Utility Model Content

[0004] The main purpose of this utility model is to provide a cell mounting base, a battery module, and a battery pack, which can solve the problem that the tabs and busbars of existing battery modules lack effective support during the welding process, resulting in poor solder joints.

[0005] To achieve the above objectives, according to one aspect of the present invention, a battery module is provided, including a mounting plate and a support portion. The support portion is disposed at the end of the mounting plate along the Y-axis direction. The support portion includes a support section and fixed sections located at both ends of the support section. The support section extends outward from the support portion along the X-axis direction and protrudes from the mounting plate.

[0006] Furthermore, the support also includes a connecting section, which is disposed on the support section and extends along the Y-axis direction. The connecting section is connected to the mounting plate.

[0007] Furthermore, the support section and the fixed sections located at both ends of the support section surround and form a passageway.

[0008] Furthermore, a first fixing post is provided on the fixed section, and a first fixing hole is provided on the mounting plate, with the first fixing post and the first fixing hole being fixedly connected.

[0009] Furthermore, the mounting plate is a C-shaped plate, and reinforcing ribs are provided at the bends of the C-shaped plate.

[0010] Furthermore, a second fixing post is provided on the connecting section.

[0011] According to another aspect of the present invention, a battery module is also provided, including a cell mounting base and a busbar. The busbar is installed at the end of the cell mounting base, and at least one cell is installed in the cell mounting base. The cell has tabs at both ends. When a support section and a fixed section located at both ends of the support section surround and form a through groove, the tabs extend out of the through groove and are electrically connected to the busbar. The cell mounting base is the aforementioned cell mounting base.

[0012] Furthermore, the busbar is mounted on the support, and the busbar is provided with a through hole, through which the electrode tabs pass and are electrically connected to the busbar.

[0013] Furthermore, a second fixing hole is provided on the busbar, and when a first fixing post is provided on the fixing section, the first fixing post is fixedly connected to the second fixing hole.

[0014] Furthermore, the busbar includes electrical connection sections located on both sides of the through hole, the tabs protrude through the through hole and bend towards the electrical connection sections, the tabs are electrically connected to the electrical connection sections, and the support includes a support section that can support the electrical connection sections.

[0015] Furthermore, the battery module also includes an end plate and a base. The end plate is disposed at the end of the battery module. Along the Y-axis, the height of at least one end of the end plate is lower than the height of the cell mounting base. The base is disposed at the end of the end plate where the height is lower than the height of the cell mounting base. The base is electrically connected to the busbar.

[0016] Furthermore, the end plate includes an end plate crimping area located in the middle of the end plate, and strap crimping areas located at both ends of the crimping area. Along the X-axis direction, the height of the end plate crimping area is greater than the height of the strap crimping area.

[0017] Furthermore, a limiting part is provided on the side of the strap crimping area away from the end plate crimping area.

[0018] According to another aspect of the present invention, a battery pack is also provided, including a battery module, wherein the battery module is the aforementioned battery module.

[0019] Using the technical solution of this utility model, the mounting plate is used to support the battery cell and the support portion. The support portion plays the role of fixing and supporting the battery cell in the battery cell mounting base. The support portion includes a support section. When the battery cell mounting base proposed by this utility model is applied to a battery module or battery pack, the support section extending outward along the X-axis direction of the support portion is used to support the tabs and the busbar. The fixing sections located at both ends of the support section can cooperate with the fixing structure on the busbar to realize the installation and fixing of the busbar.

[0020] By providing a support section extending outward along the X-axis on the support, the support can support the welding position of the tab and the busbar during the electrical connection process. This prevents the tab and the busbar from shifting or deforming due to the high temperature and pressure generated during welding under high preload conditions, thereby avoiding the problem of poor solder joints and improving the product performance and safety of solid-state batteries. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof.

[0022] In the picture:

[0023] Figure 1 A schematic diagram of the overall structure of the battery cell mounting base of this utility model is shown;

[0024] Figure 2 An exploded view of the battery cell mounting base of this utility model is shown;

[0025] Figure 3 An exploded view of the battery module's cell mounting base and the battery cell of this utility model is shown.

[0026] Figure 4 This diagram illustrates the assembly of the battery module's cell mounting base and the battery cell according to the present invention.

[0027] Figure 5 A schematic diagram of the overall structure of the end plate of the battery module of this utility model is shown;

[0028] Figure 6 A schematic diagram of the first overall structure of the battery module of this utility model is shown;

[0029] Figure 7 A schematic diagram of the second overall structure of the battery module of this utility model is shown.

[0030] The above figures include the following reference numerals:

[0031] 1. Mounting plate; 11. Reinforcing rib; 2. Support part; 21. Support section; 22. Fixing section; 23. Second fixing post; 24. Connecting section; 25. First fixing post; 26. Through groove; 27. First fixing hole; 3. Battery cell; 31. Electrode; 4. Busbar; 41. Through hole; 5. End plate; 51. End plate crimping area; 52. Strap crimping area; 53. Limiting part; 6. Base. Detailed Implementation

[0032] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] See also Figures 1 to 7 As shown, this utility model provides a battery cell mounting base, including a mounting plate 1 and a support part 2. The support part 2 is disposed at the end of the mounting plate 1 along the Y-axis direction. The support part 2 includes a support section 21 and a fixing section 22 located at both ends of the support section 21. The support section 21 extends outward along the X-axis direction and protrudes from the mounting plate 1.

[0034] In the above technical solution, the mounting plate 1 is used to support the battery cell 3 and the support part 2. The support part 2 plays the role of fixing and supporting the battery cell in the battery cell mounting base. The support part 2 includes a support section 21. When the battery cell mounting base proposed in this utility model is applied to a battery module or battery pack, the support section 21, which extends outward along the X-axis direction towards the outside of the support part 2, is used to support the tabs and the busbar. The fixing sections 22 located at both ends of the support section 21 can cooperate with the fixing structure on the busbar 4 to realize the installation and fixing of the busbar 4.

[0035] By providing a support section 21 extending outward along the X-axis direction on the support section 2, the support section 2 can support the welding position of the tab and the busbar during the electrical connection process, preventing the tab and the busbar from shifting or deforming due to the high temperature and pressure generated during welding under high preload conditions, thereby avoiding the problem of poor welding and improving the product performance and safety of solid-state batteries.

[0036] In one embodiment of the present invention, the support part 2 further includes a connecting section 24, which is disposed on the support part 21, extends along the Y-axis, and is connected to the mounting plate 1.

[0037] In the above technical solution, the connecting segment 24 is used to connect and fix the support part 2 to the mounting plate 1, ensuring the accurate installation position of the support part 2. The connecting segment 24 extends along the Y-axis towards the center of the mounting plate 1 on the support segment 21, thereby ensuring a large contact area between the connecting segment 24 and the mounting plate 1. This effectively improves the stability of the support part 2 and prevents it from loosening or being damaged during battery module operation or transportation, which would affect the safety and performance of the battery cell. The connecting segment 24 and the mounting plate 1 can be connected by riveting, welding, or snap-fitting.

[0038] In one embodiment of the present invention, the support section 21 and the fixing sections 22 located at both ends of the support section 21 surround and form the through groove 26.

[0039] In the above technical solution, when the cell mounting base proposed by this utility model is applied to a battery module or battery pack, the groove 26 can provide a path for the cell tabs of the battery module or battery pack to pass through the cell mounting base, so that the tabs can extend from the cell mounting base and directly lead to the busbar of the module, which facilitates subsequent electrical connection and welding operations and improves the assembly efficiency of the battery module.

[0040] In one embodiment of this utility model, a first fixing post 25 is provided on the connecting section 24, and a first fixing hole 27 is provided on the mounting plate 1. The first fixing post 25 is fixed to the first fixing hole 27.

[0041] In the above technical solution, the first fixing post 25 is located on the connecting section 24 and is used to cooperate with the first fixing hole 27 for fixation. The first fixing hole 27 is set on the mounting plate 1, and its position and size must match the first fixing post 25 to ensure precise docking and firm connection between the components. Through the cooperation of the first fixing post 25 and the first fixing hole 27, the support part 2 can be quickly and stably installed on the mounting plate 1.

[0042] In one embodiment of this utility model, the mounting plate 1 is a C-shaped plate, and a reinforcing rib 11 is provided at the bend of the C-shaped plate.

[0043] In the above technical solution, the mounting plate 1 serves as the basic mounting structure for the solid-state battery module. Setting the mounting plate 1 as a C-shaped plate not only better supports the battery cells and related components, but its specific shape also enhances the structural rigidity. Reinforcing ribs 11 are provided at the bends of the C-shaped plate, significantly enhancing the structural strength of the mounting plate 1 at the bends and reducing the possibility of deformation and damage to the mounting plate 1 under external forces.

[0044] In one embodiment of this utility model, a first fixing post 25 is provided on the connecting segment 24.

[0045] In the above technical solution, the first fixing post 25 set on the connecting section 24 can realize the quick positioning and connection and fixation between components. When the cell mounting base proposed by this utility model is applied to a battery module or battery pack, the first fixing post 25 can cooperate with the fixing structure on the busbar to achieve the effect of firmly connecting and combining external components such as the busbar with the cell mounting base.

[0046] In one embodiment of this utility model, the mounting plate 1 is a metal heat dissipation plate such as an aluminum plate, with a thickness of 0.1mm to 3mm, preferably 0.2mm to 1mm.

[0047] In the above technical solution, by using an aluminum plate with a thickness of 0.1mm to 3mm, preferably 0.2mm to 1mm, the structural strength of the cell mounting base is significantly enhanced while ensuring its lightweight design. When this cell mounting base is applied to a battery module, it can significantly improve the structural strength of the module. Simultaneously, using a metal heat sink with good thermal conductivity, such as an aluminum plate, as the mounting plate 1 increases the heat transfer efficiency of the battery module, thereby improving the thermal stability of the solid-state battery.

[0048] See also Figures 1 to 7 As shown, this utility model also provides a battery module, including a cell mounting base and a busbar 4. The busbar 4 is installed at the end of the cell mounting base. At least one cell 3 is installed in the cell mounting base. The cell 3 has tabs 31 at both ends. When the support section 21 and the fixing section 22 located at both ends of the support section 21 surround and form a through groove 26, the tabs 31 extend out of the through groove 26 and are electrically connected to the busbar 4. The cell mounting base is the cell mounting base of the above embodiment.

[0049] In the above technical solution, the cell mounting base provides an installation platform for the cell 3, which is the core of the battery module and is responsible for storing and releasing electrical energy. The tabs 31 at both ends of the cell 3 mainly provide a channel for energy exchange with the outside world. The tabs 31 extend from the through groove 26 formed by the support section 21 and the fixing section 22, and form an electrical connection with the busbar 4. The support part 2 can position and fix the busbar installed on the cell mounting base.

[0050] The battery module provided by this utility model, by setting a support part 2 with a support section 21, ensures that the support section 21 can support the welding position of the tab and the busbar in the electrical connection process, and avoids the tab and the busbar from shifting or deforming due to the high temperature and pressure generated during welding under high pre-tightening force conditions, thereby avoiding the problem of poor welding of the solder joint and improving the product performance and safety of solid-state batteries.

[0051] In one embodiment of this utility model, multiple cell mounting bases are stacked along the X-axis to form a battery module. The support section 21 cooperates with the through groove 26 in the adjacent cell mounting base, thereby guiding the cell mounting bases during the stacking and assembly process of multiple cell mounting bases and ensuring that adjacent cell mounting bases can be accurately assembled.

[0052] In one embodiment of this utility model, the busbar 4 is mounted on the support part 2, and the busbar 4 is provided with a through hole 41. The electrode 31 passes through the through hole 41 and is electrically connected to the busbar 4.

[0053] In the above technical solution, the busbar 4 is used to collect and distribute the current between the battery cells, and is a key component in the battery module to realize series or parallel connection. The through hole 41 provided on the busbar 4 allows the electrode tab 31 of the battery cell to pass through it, so that the electrode tab 31 can contact the surface of the busbar 4 and be electrically connected by means of welding or other methods.

[0054] In one embodiment of this utility model, along the X-axis direction, there is a gap between the outer side of the busbar 4 and the support portion 2, and the electrode tab can pass through the gap and be electrically connected to the busbar 4.

[0055] In the above technical solution, the gap between the outer side of the busbar 4 and the support part 2 allows the electrode 31 of the battery cell to pass through it, so that the electrode 31 located on the outer side of the busbar 4 can contact the surface of the busbar 4 and be electrically connected by means of welding or the like.

[0056] In one embodiment of this utility model, a second fixing hole is provided on the busbar 4. When a second fixing post 23 is provided on the fixing section 22, the second fixing post 23 is fixedly connected to the second fixing hole.

[0057] In the above technical solution, the second fixing hole is used to engage with the second fixing post 23 in the support part 2 to realize the quick connection between the busbar 4 and the support part 2, improve the assembly efficiency, and at the same time ensure the tight assembly between the components.

[0058] In one embodiment of the present invention, the busbar 4 includes electrical connection sections located on both sides of the through hole 41, the tab 31 extends out of the through hole 41 and bends into the electrical connection section, the tab 31 is electrically connected to the electrical connection section, and the support part 2 includes a support section 21, which can support the electrical connection section.

[0059] In the above technical solution, the electrical connection section is located on both sides of the through hole 41. The tab 31 extends through the through hole 41, bends towards the electrical connection section, and fits against the electrical connection section, ensuring sufficient contact area between the tab 31 and the busbar 4. The tab 31 is electrically connected to the electrical connection section, improving the reliability of the electrical connection and reducing the possibility of poor connection. The support section 21, as part of the support part 2, supports the electrical connection section. When the tab and the electrical connection section are electrically connected under high preload conditions, the high temperature and pressure generated during welding may cause the tab and the electrical connection section to shift or deform, resulting in the problem of poor solder joint. By setting the support section 21 to support the electrical connection section, the above situation is avoided, thereby improving the product quality and safety of the solid-state battery and increasing the yield rate.

[0060] In one embodiment of this utility model, the surface of the support segment 21 that contacts the busbar 4 and supports the busbar 4 is a plane.

[0061] In the above technical solution, the support effect of the uneven contact surface is poor, and there is still a possibility that the electrode and busbar 4 will deform during the welding process, resulting in poor welding. Therefore, the contact surface between the support section 21 and the busbar 4 is designed as a plane, which can ensure the effective support of the support section 21 for the busbar 4 and avoid the problem of poor welding.

[0062] In one embodiment of the present invention, the battery module further includes an end plate 5 and a base 6. The end plate 5 is disposed at the end of the battery module. Along the Y-axis direction, the height of at least one end of the end plate 5 is lower than the height of the cell mounting base. The base 6 is disposed at the end of the end plate 5 where the height is lower than the height of the cell mounting base. The base 6 is electrically connected to the busbar 4.

[0063] In the above technical solution, the main function of the end plate 5 is to provide structural support for the sides of the battery module, position and fix the cell assembly, and reduce damage to the internal components of the module from external impacts. The base 6 is the positive and negative output terminals of the battery module, providing an interface for electrical connection between the external circuitry and the internal busbars of the module. The height of at least one end of the end plate 5 is lower than the height of the cell mounting base, making the length of the end plate 5 less than the length of the cell mounting base. This reduces deformation of the end plate 5 under preload and improves the structural stability of the entire battery module. The base 6 is positioned at the end of the end plate 5 where its height is lower than the cell mounting base. This ensures that the base 6 will not interfere with the cell mounting base or other electrical components during installation and electrical connection, thereby optimizing the electrical connection layout and reducing electrical connection failures caused by collisions or external factors.

[0064] In one embodiment of this utility model, the end plate 5 is provided with a base fixing hole, and the base 6 is installed and fixed on the end plate 5 by means of a fixing structure such as riveting, screwing or snapping, which cooperates with the base fixing hole.

[0065] In one embodiment of the present invention, the end plate 5 includes an end plate crimping area 51 located in the middle of the end plate 5, and strap crimping areas 52 located at both ends of the end plate crimping area 51. Along the X-axis direction, the height of the end plate crimping area 51 is greater than the height of the strap crimping area 52.

[0066] In the above technical solution, the end plate crimping area 51 is located in the middle of the end plate. Its increased height design can concentrate the transmission of pre-tightening force, ensuring tight contact between the cells. At the same time, the higher height of the end plate crimping area 51 also enhances the bending strength of the end plate 5 and reduces the deformation of the end plate 5 under large pre-tightening force. The strap crimping areas 52 are located at both ends of the end plate and are used to accommodate the straps. The straps apply pre-tightening force to the battery module through the crimping areas, keeping the internal cells and heat-conducting components in tight contact. The height of the end plate crimping area 51 is designed to be greater than the height of the strap crimping area 52, thereby forming a boss in the end plate crimping area 51 relative to the strap crimping area 52. This boss positions the side of the strap closest to the end plate crimping area 51, ensuring the accuracy of the strap binding position and thus improving the binding and fastening effect. When assembling the battery module with the binding strap, the crimping tool crimps the end plate crimping area 51, and then the binding strap is installed to the binding strap crimping area 52, providing pre-tightening force to the battery module through the binding strap.

[0067] In one embodiment of the present invention, a limiting part 53 is also provided on the side of the strap crimping area 52 away from the end plate crimping area 51.

[0068] In the above technical solution, the limiting part 53 is used to position the side of the strap away from the end plate pressing area 51, preventing the strap from sliding outward and ensuring the accuracy of the strap's binding position, thereby ensuring the strap's fastening effect. The height of the limiting part 53 is designed to be greater than the height of the strap pressing area 52, which, together with the end plate pressing area 51 which is higher than the strap pressing area 52, forms a groove in the strap pressing area 52, further improving the accuracy of the strap's positioning and limiting the strap to prevent it from shifting.

[0069] In one embodiment of this utility model, a lifting hole is also provided on the end plate, which is located at the top of the end plate. The lifting hole facilitates the lifting and transport of the battery module.

[0070] In one embodiment of this utility model, the end plate is made of high elastic modulus and high strength carbon fiber composite material.

[0071] In the above technical solution, carbon fiber composite materials possess high strength and light weight, meaning they can reduce the overall weight of the battery module while maintaining structural strength. The high modulus of elasticity and high strength of carbon fiber composite materials give them excellent resistance to deformation under preload. Since the preload required for solid-state battery modules is much greater than that of traditional battery modules, using carbon fiber composite materials as end plates ensures that the end plates remain stable even under high preload, avoiding poor battery contact or decreased module structural stability due to end plate deformation.

[0072] See also Figures 1 to 7As shown, this utility model also provides a battery pack, including a battery module, which is the battery module of the above embodiment.

[0073] In the above technical solutions, when the tab and the electrical connection section are electrically connected, the high temperature and pressure generated during welding may cause the tab and the electrical connection section to shift or deform, resulting in the problem of poor welding. The battery pack proposed in this utility model adopts the battery module of the above embodiment and uses the support section 21 to support the electrical connection section, which avoids the situation of shifting or deforming when the tab and the electrical connection section are welded, thereby avoiding the problem of poor welding and improving the product quality and safety of solid-state batteries.

[0074] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: the mounting plate 1 is used to support the battery cell 3 and the support part 2. The support part 2 plays the role of fixing and supporting the battery cell in the battery cell mounting base. The support part 2 includes a support section 21. When the battery cell mounting base proposed by this utility model is applied to a battery module or battery pack, the support section 21 extending outward along the X-axis direction towards the outside of the support part 2 is used to support the tabs and the busbar. The fixing sections 22 located at both ends of the support section 21 can cooperate with the fixing structure on the busbar 4 to realize the installation and fixing of the busbar 4.

[0075] By providing a support section 21 extending outward along the X-axis direction on the support section 2, the support section 2 can support the welding position of the tab and the busbar during the electrical connection process, preventing the tab and the busbar from shifting or deforming due to the high temperature and pressure generated during welding under high preload conditions, thereby avoiding the problem of poor welding and improving the product performance and safety of solid-state batteries.

[0076] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0077] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery cell mounting base, characterized in that, It includes a mounting plate (1) and a support part (2). The support part (2) is disposed at the end of the mounting plate (1) along the Y-axis direction. The support part (2) includes a support section (21) and a fixing section (22) located at both ends of the support section (21). The support section (21) extends outward of the support part (2) along the X-axis direction and protrudes from the mounting plate (1).

2. The cell mounting base according to claim 1, characterized in that, The support part (2) further includes a connecting section (24), which is disposed on the support part (21) and extends along the Y-axis direction. The connecting section (24) is connected to the mounting plate (1).

3. The cell mounting base according to claim 2, characterized in that, The support section (21) and the fixing sections (22) located at both ends of the support section (21) surround to form a through groove (26); and / or, a first fixing post (25) is provided on the connecting section (24), and a first fixing hole (27) is provided on the mounting plate (1), and the first fixing post (25) is fixedly connected to the first fixing hole (27).

4. The cell mounting base according to claim 2, characterized in that, The mounting plate (1) is a C-shaped plate, and a reinforcing rib (11) is provided at the bend of the C-shaped plate; and / or, a second fixing post (23) is provided on the fixing section (22).

5. A battery module, characterized in that, The device includes a battery cell mounting base and a busbar (4). The busbar (4) is installed at the end of the battery cell mounting base. At least one battery cell (3) is installed in the battery cell mounting base. The battery cell (3) has tabs (31) at both ends. When the support section (21) and the fixed section (22) located at both ends of the support section (21) surround and form a through groove (26), the tabs (31) extend out of the through groove (26). The tabs (31) are electrically connected to the busbar (4). The battery cell mounting base is the battery cell mounting base according to any one of claims 1 to 4.

6. The battery module according to claim 5, characterized in that, The busbar (4) is mounted on the support (2), and the busbar (4) is provided with a through hole (41). The electrode (31) passes through the through hole (41) and is electrically connected to the busbar (4).

7. The battery module according to claim 6, characterized in that, The busbar (4) is provided with a second fixing hole. When the fixing section (22) is provided with a second fixing post (23), the second fixing post (23) is fixedly connected to the second fixing hole.

8. The battery module according to claim 6, characterized in that, The busbar (4) includes electrical connection sections located on both sides of the through hole (41), the tab (31) extends through the through hole (41) and bends toward the electrical connection section, the tab (31) is electrically connected to the electrical connection section, and the support (2) includes a support section (21) that can support the electrical connection section.

9. The battery module according to claim 6, characterized in that, The battery module further includes an end plate (5) and a base (6). The end plate (5) is disposed at the end of the battery module. Along the Y-axis direction, the height of at least one end of the end plate (5) is lower than the height of the cell mounting base. The base (6) is disposed at the end of the end plate (5) where the height is lower than the height of the cell mounting base. The base (6) is electrically connected to the busbar (4).

10. The battery module according to claim 9, characterized in that, The end plate (5) includes an end plate crimping area (51) located in the middle of the end plate (5) and strap crimping areas (52) located at both ends of the crimping area (51). Along the X-axis direction, the height of the end plate crimping area (51) is greater than the height of the strap crimping area (52).

11. The battery module according to claim 10, characterized in that, A limiting part (53) is also provided on the side of the strap crimping area (52) away from the end plate crimping area (51).

12. A battery pack, characterized in that, Includes the cell mounting bracket as described in any one of claims 1 to 4 or the battery module as described in any one of claims 5 to 11.

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