End plate assembly and battery module with same
By setting mounting slots and limiting structures in the end plate assembly, reliable connection of multiple sub-end plates is achieved, solving the problem of end plate assembly adapting to various battery module models, reducing mold opening costs and manufacturing costs, and improving the reliability and strength of the battery module.
Patent Information
- Application Number
- CN202520409647.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-10
AI Technical Summary
In the existing technology, the mold opening cost of the end plate assembly is high, and it cannot be adapted to various models of battery modules, which leads to an increase in the manufacturing cost of the battery module.
Design an end plate assembly including multiple first sub-end plates, connecting plates and fasteners. By setting mounting slots and limiting structures on the sub-end plates, a reliable connection between multiple sub-end plates can be achieved, adapting to different cell group numbers and arrangements, without the need to open new end plate molds.
It reduces the mold opening cost of the end plate assembly, increases the utilization rate of parts, reduces the manufacturing cost of the battery module, and improves the reliability and strength of the battery module.
Smart Images
Figure CN223941926U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of battery technology, and in particular to an end plate assembly and a battery module having the same. Background Technology
[0002] In the existing technology, the end plate is an important component of the battery module. It has irreplaceable functions such as fixing the output electrode base, resisting the expansion force of the battery cell, and providing mounting holes. Battery modules have single-row, double-row, and triple-row cell solutions, which require different end plates to be adapted according to the different number of rows of cells. However, the mold opening cost of the end plate is relatively high. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an end plate assembly that can be adapted to various types of battery modules, reducing the mold opening cost of the end plate assembly.
[0004] This utility model also proposes a battery module, which includes the aforementioned end plate assembly.
[0005] An end plate assembly according to an embodiment of the present invention is used in a battery module and includes a plurality of first sub-end plates, a connecting plate, and a plurality of first fasteners. The length direction of the first sub-end plates is the same as the length direction of the end plate assembly. The plurality of first sub-end plates abut against each other sequentially along the length direction of the end plate assembly. At least one end face of the width direction of the first sub-end plate is provided with mounting grooves at both ends along the length direction of the first sub-end plate. The bottom wall of the mounting groove is provided with a first connecting hole. The side of the mounting groove near the end face of the first sub-end plate in the length direction is open. The connecting plate is disposed in two mounting grooves of two adjacent first sub-end plates. The connecting plate is provided with a first through hole opposite to the first connecting hole. Each first fastener passes through the opposite first through hole and the first connecting hole.
[0006] According to the end plate assembly of this utility model embodiment, by providing mounting grooves at both ends of at least one end face in the width direction of the first sub-end plate along the length direction of the first sub-end plate, and the connecting plate being disposed in the two mounting grooves of two adjacent first sub-end plates, and the first fastener realizing the fastening connection between the connecting plate and the adjacent first sub-end plates, the connection between multiple first sub-end plates can be realized relatively simply and reliably. It can adapt to the number and arrangement of cell groups in the battery module, and can adapt to various models of battery modules without opening new end plate molds according to the number and arrangement of cell groups in the battery module, thereby reducing the mold opening cost of the end plate assembly, increasing the component utilization rate of the end plate assembly, and reducing the manufacturing cost of the battery module.
[0007] In some embodiments of this utility model, a first assembly groove and a second assembly groove are respectively provided at both ends of the length direction of the first sub-end plate. A limiting post is provided in the first assembly groove, and a limiting hole is provided in the second assembly groove. The axial direction of the limiting post and the limiting hole is the same as the width direction of the first sub-end plate, and the limiting post passes through the limiting hole of the adjacent first sub-end plate.
[0008] In some embodiments of this utility model, the limiting post includes a first post, and there are multiple first posts. The multiple first posts are arranged at intervals along the thickness direction of the first sub-end plate. The limiting hole includes multiple first holes disposed opposite to the first posts, and the first posts pass through the first holes.
[0009] In some embodiments of this utility model, the limiting post further includes a second post, the second post and the first post are arranged at intervals along the width direction of the first sub-end plate, and the limiting hole includes a second hole disposed opposite to the second post, the second post passing through the second hole.
[0010] In some embodiments of this utility model, a first boss is provided on the bottom wall of the first assembly groove, and a limiting post is provided on the first boss. The axial direction of the limiting post is the same as the width direction of the first sub-end plate. Along the length direction of the first sub-end plate, the free end face of the first boss extends beyond the end face of the first sub-end plate where the first assembly groove is provided.
[0011] In some embodiments of this utility model, a second boss is provided on the bottom wall of the second assembly groove, and the limiting hole is provided on the second boss. The axial direction of the limiting hole is the same as the width direction of the first sub-end plate. Along the length direction of the first sub-end plate, the free end face of the second boss extends beyond the end face of the first sub-end plate where the second assembly groove is provided. Along the width direction of the first sub-end plate, the first boss and the second boss are alternately arranged and their end faces abut against each other.
[0012] In some embodiments of this utility model, the first assembly groove and the second assembly groove both penetrate the first sub-end plate along the thickness direction of the first sub-end plate.
[0013] In some embodiments of this utility model, the mounting groove penetrates through the first sub-end plate along the thickness direction of the first sub-end plate.
[0014] In some embodiments of this utility model, the end face of the connecting plate away from the bottom wall of the mounting groove does not extend beyond the end face of the first sub-end plate where the mounting groove is located.
[0015] The battery module according to an embodiment of the present invention includes a cell assembly and an end plate assembly, wherein the end plate assembly is disposed at both ends of the cell assembly in the length direction and / or width direction.
[0016] According to the battery module of this utility model embodiment, by providing mounting grooves at both ends of at least one end face in the width direction of the first sub-end plate along the length direction of the first sub-end plate, and the connecting plate being disposed in the two mounting grooves of two adjacent first sub-end plates, and the first fastener realizing the fastening connection between the connecting plate and the adjacent first sub-end plates, the connection between multiple first sub-end plates can be realized relatively simply and reliably. It can adapt to the number and arrangement of battery cells in the battery module, and can adapt to various models of battery modules without opening new end plate molds according to the number and arrangement of battery cells in the battery module, thereby reducing the mold opening cost of the end plate assembly, increasing the component utilization rate of the end plate assembly, and reducing the manufacturing cost of the battery module.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0019] Figure 1 This is a perspective view of the end plate assembly according to an embodiment of the present utility model;
[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 yes Figure 2 Enlarged view of the separation of two adjacent first sub-end plates in the middle;
[0022] Figure 4 This is a perspective view of the first sub-end plate of the end plate assembly according to an embodiment of the present utility model;
[0023] Figure 5 A perspective view of an endplate assembly according to another embodiment of the present invention.
[0024] Figure label:
[0025] 100. Endplate assembly;
[0026] 1. First sub-end plate; 11. Mounting groove; 111. First connecting hole; 12. First assembly groove; 121. Limiting post; 1211. First post; 1212. Second post; 122. First boss; 13. Second assembly groove; 131. Limiting hole; 1311. First hole; 1312. Second hole; 132. Second boss;
[0027] 2. Connecting plate; 3. First fastener. Detailed Implementation
[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The following is for reference. Figures 1-5 Description of an end plate assembly 100 according to the present invention.
[0032] The end plate assembly 100 according to an embodiment of the present utility model includes a plurality of first sub-end plates 1, a connecting plate 2, and a plurality of first fasteners 3.
[0033] Specifically, the end plate assembly 100 is used in the module. The end plate assembly 100 can fix the output electrode base, resist the expansion force of the cell assembly, increase the strength of the battery module, and increase the reliability of the battery module. At the same time, the end plate assembly 100 can be equipped with mounting holes, which facilitates the movement and assembly of the battery module and reduces the manufacturing cost of the battery module and subsequent battery pack.
[0034] In this embodiment, the first sub-end plate 1 is a die-cast end plate, which has a relatively stable structure and high strength, and can be widely used in battery modules.
[0035] like Figure 1 , Figure 4 and Figure 5 As shown, the length direction of the first sub-end plate 1 (e.g.) Figure 1 The first direction shown is the same as the length direction of the end plate assembly 100. Multiple first sub-end plates 1 are sequentially abutted along the length direction of the end plate assembly 100. Different numbers of first sub-end plates 1 can be selected according to the number and arrangement of the battery cells in the battery module to meet the assembly requirements of battery modules with different numbers of battery cells.
[0036] like Figure 1 and Figure 4 As shown, the width direction of the first sub-end plate 1 (e.g.) Figure 1 At least one end face of the first sub-end plate 1 in the second direction shown is provided with mounting grooves 11 at both ends along the length direction of the first sub-end plate 1. The bottom wall of the mounting groove 11 is provided with a first connecting hole 111. The side of the mounting groove 11 near the end face of the first sub-end plate 1 in the length direction is open. The connecting plate 2 is provided in the two mounting grooves 11 of the two adjacent first sub-end plates 1. The connecting plate 2 is provided with a first through hole opposite to the first connecting hole 111. Each first fastener 3 passes through the opposite first through hole and first connecting hole 111. Understandably, when the connecting plate 2 is installed into the mounting slot 11, the first fastener 3 secures the connecting plate 2 to the adjacent first sub-end plate 1. This allows for a relatively simple and reliable connection between multiple first sub-end plates 1, adapting to the number and arrangement of battery cells in the battery module. Furthermore, it eliminates the need to create new end plate molds based on the number and arrangement of battery cells in the battery module, thus adapting to various battery module models. This reduces the mold opening cost of the end plate assembly 100, increases the component utilization rate of the end plate assembly 100, and lowers the manufacturing cost of the battery module.
[0037] Meanwhile, the connecting plate 2 can limit the first sub-end plate 1 along the length direction of the first sub-end plate 1, increasing the reliability of the connection between adjacent first sub-end plates 1.
[0038] According to the embodiment of the present invention, the end plate assembly 100 has mounting grooves 11 at both ends of at least one end face of the first sub-end plate 1 in the width direction along the length direction of the first sub-end plate 1. The connecting plate 2 is disposed in the two mounting grooves 11 of two adjacent first sub-end plates 1, and the first fastener 3 realizes the fastening connection between the connecting plate 2 and the adjacent first sub-end plates 1. The connection between multiple first sub-end plates 1 can be realized in a relatively simple and reliable manner. It can adapt to the number and arrangement of battery cells in the battery module, and can adapt to various models of battery modules without opening new end plate molds according to the number and arrangement of battery cells in the battery module. This reduces the mold opening cost of the end plate assembly 100, increases the component utilization rate of the end plate assembly 100, and reduces the manufacturing cost of the battery module.
[0039] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first sub-end plate 1 has a first assembly groove 12 and a second assembly groove 13 at both ends along its length. A limiting post 121 is provided in the first assembly groove 12, and a limiting hole 131 is provided in the second assembly groove 13. The axial direction of the limiting post 121 and the limiting hole 131 is the same as the width direction of the first sub-end plate 1. The limiting post 121 passes through the limiting hole 131 of an adjacent first sub-end plate 1. The limiting post 121 and the limiting hole 131 can position adjacent first sub-end plates 1 during assembly of multiple first sub-end plates 1, facilitating the assembly of the end plate assembly 100.
[0040] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the limiting post 121 includes a first post 1211, and there are multiple first posts 1211. The multiple first posts 1211 are along the thickness direction of the first sub-end plate 1 (e.g., Figure 1 As shown in the third direction, the limiting holes 131 are arranged at intervals, and include a plurality of first holes 1311 disposed opposite to the first posts 1211, with the first posts 1211 passing through the first holes 1311. The plurality of first posts 1211 arranged at intervals along the thickness direction of the first sub-end plate 1 can limit the first sub-end plate 1 along the thickness direction of the first sub-end plate 1, increasing the reliability of the connection between adjacent first sub-end plates 1.
[0041] In some embodiments of this utility model, such as Figure 2 and Figure 3As shown, the limiting post 121 also includes a second post 1212, which is spaced apart from the first post 1211 along the width direction of the first sub-end plate 1. The limiting hole 131 includes a second hole 1312 opposite to the second post 1212, and the second post 1212 passes through the second hole 1312. The first post 1211 and the second post 1212, which are spaced apart along the width direction of the first sub-end plate 1, can limit the first sub-end plate 1 along the width direction of the first sub-end plate 1, increasing the reliability of the connection between adjacent first sub-end plates 1.
[0042] Of course, this utility model is not limited to this. The second column 1212 can be a plurality of columns arranged at intervals along the thickness direction of the first sub-end plate 1, which can further limit the first sub-end plate 1 in the thickness direction of the first sub-end plate 1 and increase the reliability of the connection between adjacent first sub-end plates 1.
[0043] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, a first boss 122 is provided on the bottom wall of the first assembly groove 12, and a limiting post 121 is provided on the first boss 122. The axial direction of the limiting post 121 is the same as the width direction of the first sub-end plate 1. Along the length direction of the first sub-end plate 1, the free end face of the first boss 122 extends beyond the end face of the first sub-end plate 1 where the first assembly groove 12 is provided. This allows the first boss 122 to extend into the second assembly groove 13 of the adjacent first sub-end plate 1, facilitating the assembly of the limiting post 121 and the limiting hole 131.
[0044] Furthermore, such as Figure 2 and Figure 3 As shown, a second boss 132 is provided on the bottom wall of the second assembly groove 13, and a limiting hole 131 is provided on the second boss 132. The axial direction of the limiting hole 131 is the same as the width direction of the first sub-end plate 1. Along the length direction of the first sub-end plate 1, the free end face of the second boss 132 extends beyond the end face of the first sub-end plate 1 where the second assembly groove 13 is provided, so that the second boss 132 can extend into the first assembly groove 12 of the adjacent first sub-end plate 1, which facilitates the assembly of the limiting post 121 and the limiting hole 131.
[0045] Along the width direction of the first sub-end plate 1, such as Figure 2 and Figure 3As shown, the first boss 122 and the second boss 132 are alternately arranged and their end faces abut against each other, so that the first boss 122 and the second boss 132 can limit the first sub-end plate 1 in the width direction, increasing the connection reliability of the first sub-end plate 1; at the same time, when the end plate assembly 100 is subjected to external force impact, the impact force of the limiting post 121 (including the first post 1211 and the second post 1212) can be distributed to the first boss 122 and the second boss 132, avoiding the limiting post 121 from breaking under force and avoiding the limiting failure of the limiting post 121.
[0046] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, along the thickness direction of the first sub-end plate 1, both the first assembly groove 12 and the second assembly groove 13 penetrate the first sub-end plate 1, which facilitates the processing and manufacturing of the first assembly groove 12 and the second assembly groove 13, reducing the manufacturing cost of the first sub-end plate 1. Furthermore, it can reduce the weight of the first sub-end plate 1, achieving lightweighting of the first sub-end plate 1.
[0047] In some embodiments of this utility model, such as Figure 1 and Figure 4 As shown, the mounting groove 11 extends through the first sub-end plate 1 along its thickness direction, facilitating its fabrication and reducing manufacturing costs. This also reduces the weight of the first sub-end plate 1, achieving a lighter design.
[0048] In some embodiments of this utility model, such as Figure 1 As shown, the end face of the connecting plate 2 away from the bottom wall of the mounting groove 11 does not exceed the end face of the first sub-end plate 1 with the mounting groove 11. This prevents the connecting plate 2 from protruding from the first sub-end plate 1, avoids sharp protrusions on the end plate assembly 100, and prevents scratches to the operator's arm or the machine during the transfer and assembly of the end plate assembly 100, thus avoiding personal injury or property damage. Simultaneously, it prevents the connecting plate 2 from being the first to bear the force when the battery module is impacted by external force, preventing damage to the connecting plate 2, preventing breakage of the connecting plate 2, and preventing assembly failure of the end plate assembly 100.
[0049] The battery module according to an embodiment of the present utility model includes a cell assembly and an end plate assembly 100. The end plate assembly 100 is disposed at both ends of the cell assembly in the length direction and / or width direction, and can protect the cell assembly in the length direction and / or width direction.
[0050] According to the battery module of this utility model embodiment, by providing mounting grooves 11 at both ends of at least one end face of the first sub-end plate 1 in the width direction along the length direction of the first sub-end plate 1, the connecting plate 2 is disposed in the two mounting grooves 11 of two adjacent first sub-end plates 1, and the first fastener 3 realizes the fastening connection between the connecting plate 2 and the adjacent first sub-end plates 1, the connection between multiple first sub-end plates 1 can be realized relatively simply and reliably, which can adapt to the number and arrangement of cell groups in the battery module, and can adapt to various models of battery modules without opening new end plate molds according to the number and arrangement of cell groups in the battery module, thereby reducing the mold opening cost of the end plate assembly 100, increasing the component utilization rate of the end plate assembly 100, and reducing the manufacturing cost of the battery module.
[0051] The end plate assembly 100 and other configurations and operations of the battery module having the end plate assembly according to the present invention are known to those skilled in the art and will not be described in detail here.
[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An endplate assembly, characterized in that, For use in battery modules and including: Multiple first sub-end plates, the length direction of the first sub-end plates is the same as the length direction of the end plate assembly, the multiple first sub-end plates abut against each other in sequence along the length direction of the end plate assembly, at least one end face of the first sub-end plate in the width direction is provided with mounting grooves at both ends along the length direction of the first sub-end plate, the bottom wall of the mounting groove is provided with a first connecting hole, and the side of the mounting groove near the end face of the first sub-end plate in the length direction is open. A connecting plate is disposed in two mounting slots of two adjacent first sub-end plates, and the connecting plate is provided with a first through hole opposite to the first connecting hole; Multiple first fasteners, each of the first fasteners passing through the corresponding first through hole and first connecting hole.
2. The endplate assembly according to claim 1, characterized in that, The first sub-end plate has a first assembly groove and a second assembly groove at both ends along its length. The first assembly groove has a limiting post, and the second assembly groove has a limiting hole. The axial direction of the limiting post and the limiting hole is the same as the width direction of the first sub-end plate. The limiting post passes through the limiting hole of the adjacent first sub-end plate.
3. The end plate assembly according to claim 2, characterized in that, The limiting post includes: The first post, there are multiple first posts, and the multiple first posts are arranged at intervals along the thickness direction of the first sub-end plate. The limiting hole includes multiple first holes arranged opposite to the first posts, and the first posts pass through the first holes.
4. The end plate assembly according to claim 3, characterized in that, The limiting post also includes: The second post is arranged at intervals with the first post along the width direction of the first sub-end plate. The limiting hole includes a second hole that is disposed opposite to the second post, and the second post passes through the second hole.
5. The end plate assembly according to claim 2, characterized in that, A first boss is provided on the bottom wall of the first assembly groove, and a limiting post is provided on the first boss. The axial direction of the limiting post is the same as the width direction of the first sub-end plate. Along the length direction of the first sub-end plate, the free end face of the first boss extends beyond the end face of the first sub-end plate where the first assembly groove is provided.
6. The endplate assembly according to claim 5, characterized in that, The bottom wall of the second assembly groove is provided with a second boss, and the limiting hole is provided on the second boss. The axial direction of the limiting hole is the same as the width direction of the first sub-end plate. Along the length direction of the first sub-end plate, the free end face of the second boss extends beyond the end face of the first sub-end plate where the second assembly groove is provided. Along the width direction of the first sub-end plate, the first boss and the second boss are alternately arranged and their end faces abut against each other.
7. The end plate assembly according to claim 2, characterized in that, Along the thickness direction of the first sub-end plate, both the first assembly groove and the second assembly groove penetrate the first sub-end plate.
8. The endplate assembly according to claim 1, characterized in that, The mounting groove extends through the first sub-end plate along its thickness direction.
9. The endplate assembly according to claim 1, characterized in that, The end face of the connecting plate away from the bottom wall of the mounting groove does not extend beyond the end face of the first sub-end plate where the mounting groove is located.
10. A battery module, characterized in that, include: Battery cell assembly; According to any one of claims 1-9, the end plate assembly is disposed at both ends of the cell assembly in the length direction and / or width direction.