Battery module and battery pack
By adopting the clamping structure of limiting grooves and hooks in the battery module, the problems of difficulty in assembly and fatigue failure of conductive blocks are solved, and the tight installation of conductive blocks and end plate bodies is achieved, reducing manufacturing accuracy and cost.
Patent Information
- Application Number
- CN202421604316.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-07-05
AI Technical Summary
In the prior art, the degree of freedom constraints of conductive blocks are insufficient, resulting in assembly difficulties, prone to misalignment, and the parts assembled with them have the risk of fatigue failure, which increases the manufacturing accuracy requirements and costs of parts and busbars.
The battery module adopts the design of the end plate body and the conductive block. The end plate body is equipped with an installation groove. The conductive block limits the displacement of the conductive block through the clamping structure of the limit groove and the hook, thereby increasing the installation reliability of the conductive block and the end plate body.
Through the clamping structure of the limiting groove and the hook, the conductive blocks are ensured to closely cooperate on the end plate body, avoid assembly difficulties and fatigue failure risks, and reduce manufacturing accuracy and cost requirements.
Smart Images
Figure CN223285138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery module and a battery pack. Background Art
[0002] In the prior art, the conductive blocks lacked sufficient freedom constraints, making assembly difficult and even leading to misalignment. Furthermore, the components assembled with them face the risk of fatigue failure during actual use. This creates high precision requirements for both the components themselves and the busbars they assemble with, leading to increased costs. Utility Model Content
[0003] The embodiments of the present invention provide a battery module and a battery pack, which can improve the technical problem of insufficient freedom constraints of existing conductive blocks.
[0004] In a first aspect, the present application provides a battery module, comprising:
[0005] The end plate body is provided with a mounting groove, the end plate body includes a groove bottom wall and two groove side walls forming the mounting groove, the two groove side walls are arranged at opposite ends of the groove bottom wall, and each groove side wall is respectively provided with a first limit member;
[0006] A conductive block is installed in the installation slot, the conductive block includes two end walls, each end wall faces one of the slot side walls, and the end wall is provided with a second limiting member corresponding to the first limiting member;
[0007] Wherein, one of the first limiting member and the second limiting member is a limiting groove, and the other is a hook, and the hook is engaged in the limiting groove to limit the displacement of the conductive block.
[0008] In one embodiment, the first limiting member is a hook, and the second limiting member is a limiting groove.
[0009] In one embodiment, the end wall is provided with an opening and includes a peripheral wall surrounding the opening, the hook includes an elastic arm and a hook holding portion, the elastic arm is arranged in the opening, one end of the elastic arm is elastically connected to the peripheral wall, and the other end of the elastic arm is connected to the hook holding portion, and the hook holding portion is protruded toward the limiting groove.
[0010] In one embodiment, the hooking portion includes a stop surface and a guide surface, one end of the guide surface is connected to the elastic arm, and the other end is inclined in a direction away from the end wall and the elastic arm, the stop surface is connected to the guide surface, and the other of the end wall and the groove side wall includes a limiting wall forming the limiting groove, and when the hooking portion is engaged in the limiting groove, the limiting wall and the stop surface are engaged in a limiting manner. In one embodiment, the elastic arm includes an inclined surface, the inclined surface is located at one end of the elastic arm away from the peripheral wall, the inclined surface is inclined in a direction away from the other of the end wall and the groove side wall, and is connected to the guide surface.
[0011] In one embodiment, the limiting arm and the hooking portion are an integrally formed structure.
[0012] In one embodiment, when the conductive block is installed in the installation slot, each end wall and the corresponding slot side wall are clearance-fitted.
[0013] In one embodiment, the conductive block also includes two first plug-in portions, and each of the end walls is provided with a first plug-in portion protruding from one end close to the bottom wall of the groove. Each of the groove side walls includes a bottom end close to the bottom wall of the groove, and the bottom end is recessed away from the mounting groove to form a fixed groove, and each of the first plug-in portions is correspondingly plugged into one of the fixed grooves.
[0014] In one embodiment, the conductive block includes two second plug-in portions, and a second plug-in portion is protruded from one end of each end wall away from the bottom wall of the slot. The slot side wall includes a top end away from the bottom wall of the slot, and the end plate body includes a top surface connected to the top end, and the second plug-in portion abuts against the top surface.
[0015] In one embodiment, each of the first plug-in portions includes a protruding structure extending away from the bottom wall of the slot, and the battery module further includes a bus bar installed between the two protruding structures.
[0016] In a second aspect, the present application also provides a battery pack, which includes the battery module as described above.
[0017] Beneficial effects of the embodiments of the present utility model:
[0018] In an embodiment of the present utility model, the battery module includes an end plate body and a conductive block. The end plate body is provided with a mounting groove for placing the conductive block. The end plate body includes a groove bottom wall and two groove side walls forming the mounting groove. The two groove side walls are arranged at opposite ends of the groove bottom wall, and each groove side wall is provided with a first limiting member. The conductive block is installed in the mounting groove. The conductive block includes two end walls, each end wall faces a groove side wall, and the end wall is provided with a second limiting member corresponding to the first limiting member. Among them, one of the first limiting member and the second limiting member is a limiting groove, and the other is a hook, and the hook is clamped into the limiting groove to limit the displacement of the conductive block. By adding the first limiting member and the second limiting member between the end wall and the groove side wall as a clamping structure, the end wall and the groove side wall are tightly fitted, thereby ensuring the reliability of the installation of the conductive block on the end plate body and avoiding the situation where the conductive block is insufficiently constrained. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 This is a schematic structural diagram of a battery module provided by an embodiment of the present utility model;
[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of a battery module part A is shown;
[0022] Figure 3 This is a schematic structural diagram of a conductive block provided by an embodiment of the present utility model;
[0023] Figure 4 yes Figure 3 An enlarged schematic diagram of a conductive block part B is shown;
[0024] Figure 5 yes Figure 1 A cross-sectional view of the battery module shown;
[0025] Figure 6 yes Figure 5 An enlarged schematic diagram of part C of the battery module is shown.
[0026] Reference numerals:
[0027] 100. Battery module;
[0028] 10. End plate body; 11. Mounting slot; 111. Slot bottom wall; 112. Slot side wall; 1121. Fixing slot; 1122. Top surface; 113. Limiting slot; 1131. Limiting wall;
[0029] 20. Conductive block; 21. End wall; 22. Hook; 23. Opening; 231. Peripheral wall; 24. Elastic arm; 241. Inclined surface; 25. Hooking portion; 251. Stop surface; 252. Guide surface; 26. First plug-in portion; 27. Second plug-in portion; 271. Protruding structure; DETAILED DESCRIPTION
[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.
[0031] In the prior art, the conductive blocks lacked sufficient freedom constraints, making assembly difficult and even leading to misalignment. Furthermore, the components assembled with them face the risk of fatigue failure during actual use. This creates high precision requirements for both the components themselves and the busbars they assemble with, leading to increased costs.
[0032] Please refer to Figure 1 , Figure 1 It is a structural schematic diagram of a battery module provided by an embodiment of the present utility model. The present application provides a battery module 100, which includes an end plate body 10 and a conductive block 20. The end plate body 10 is provided with a mounting groove 11, and the mounting groove 11 is used to place the conductive block 20. The end plate body 10 includes a groove bottom wall 111 and two groove side walls 112 forming the mounting groove 11. The two groove side walls 112 are arranged at opposite ends of the groove bottom wall 111, and each groove side wall 112 is respectively provided with a first limiting member. The conductive block 20 is installed in the mounting groove 11. The conductive block 20 includes two end walls 21, each end wall 21 faces one of the groove side walls 112, and the end wall 21 is provided with a second limiting member corresponding to the first limiting member.
[0033] Among them, the reference Figure 2-Figure 3 , Figure 2 yes Figure 1 The enlarged schematic diagram of the battery module part A is shown. Figure 311. The first and second limiting members include a limiting groove 113 and a hook 22. The hook 22 engages with the limiting groove 113 to limit the displacement of the conductive block 20.
[0034] In some embodiments, the first limiting member is a limiting groove 113, and the second limiting member is a hook 22. The hook 22 is set on the end wall 21. When the conductive block 20 is installed in the installation groove 11, the hook 22 moves to the limiting groove 113 and the hook 22 is correspondingly engaged with the limiting groove 113.
[0035] In some embodiments, the first limiting member is a hook 22, and the second limiting member is a limiting groove 113. The hook 22 is arranged on the groove side wall 112. When the conductive block 20 is installed in the installation groove 11, the limiting groove 113 moves to the hook 22, and the hook 22 is correspondingly engaged with the limiting groove 113.
[0036] It should be noted that the illustrations in this application only illustrate the first limiting member as the limiting groove 113 and the second limiting member as the hook 22, and the illustrations do not constitute a limitation on the positions of the first limiting member and the second limiting member.
[0037] Specifically, the hook 22 is positioned toward the limiting slot 113 and can engage with the limiting slot 113 to switch the conductive block 20 and the end plate body 10 between a locked and unlocked state. When the hook 22 extends and resides within the limiting slot 113, the conductive block 20 and the end plate body 10 are locked. In the locked state, the hook 22 disengages from the limiting slot 113 to unlock the conductive block 20 and the end plate body 10.
[0038] It is understood that when the conductive block 20 is installed in the mounting slot 11 along the first direction, the slot sidewalls 112 at both ends of the end wall 21 can limit the displacement of the conductive block 20 along the second direction, and the hook 22 and the limiting slot 113 cooperate to limit the displacement of the conductive block 20 along the first direction. Compared to the prior art, the present application provides a first limiting member and a second limiting member as a locking structure between the end wall 21 and the slot sidewall 112 to ensure a tight fit between the end wall 21 and the slot sidewall 112, ensuring the secure installation of the conductive block 20 on the end plate body 10 and avoiding the situation where the conductive block 20 is insufficiently restrained.
[0039] The first direction and the second direction are two perpendicular directions in the same plane.
[0040] In some embodiments, one of the end wall 21 and the groove side wall 112 is provided with an opening 23 and includes a peripheral wall 231 surrounding the opening 23, and the limiting member includes an elastic arm 24 and a hook holding portion 25, and the elastic arm 24 is arranged in the opening 23, one end of the elastic arm 24 is elastically connected to the peripheral wall 231, and the other end of the elastic arm 24 is connected to the hook 22, and the hook holding portion 25 is protruded toward the limiting groove 113.
[0041] Specifically, the peripheral wall 231 includes four sequentially connected side edges. The elastic arm 24 is connected to one side edge of the peripheral wall 231 and extends toward the opposite side edge. The elastic arm 24 and the hooking portion 25 are integrally formed. This integral connection enhances structural stability, simplifies the installation process, and improves production efficiency.
[0042] In some embodiments, the end wall 21 defines an opening 23 , the elastic arm 24 is disposed in the opening 23 , and one end of the elastic arm 24 is elastically connected to the end wall 21 .
[0043] In some embodiments, the slot sidewall 112 defines an opening 23 , the elastic arm 24 is disposed in the opening 23 , and one end of the elastic arm 24 is elastically connected to the slot sidewall 112 .
[0044] It is understood that during the installation process, the user applies force to push the conductive block 20 into the installation slot 11. At this time, the elastic arm 24 is elastically deformed, and the hook 22 slides and engages with the limiting wall 1131 of the limiting slot 113. During the unlocking process, the user applies force to pull the conductive block 20 out of the limiting slot 113. When the hook 22 is completely out of the limiting slot 113, the elastic arm 24 recovers its deformation, driving the hooking portion 25 to return to its original position.
[0045] Please refer to Figure 4 , Figure 4 yes Figure 3 An enlarged schematic diagram of a portion B of the conductive block is shown. In some embodiments, the hook 22 includes a stop surface 251 and a guide surface 252. One end of the guide surface 252 is connected to the elastic arm 24, and the other end is inclined in a direction away from the other of the end wall 21 and the slot side wall 112. Specifically, when the first limiting member is the hook 22, the stop surface 251 is inclined in a direction away from the elastic arm 24 and the end wall 21; however, when the second limiting member is the hook 22, the stop surface 251 is inclined in the opposite direction away from the elastic arm and the slot side wall 112. The stop surface 251 is connected to the guide surface 252. The other of the end wall 21 and the slot side wall 112 includes a limiting wall 1131 that forms the limiting groove 113. When the hook 22 is engaged with the limiting groove 113, the limiting wall 1131 and the stop surface 251 engage in a limiting manner.
[0046] Specifically, when the hook 22 is provided on the end wall 21, the guide surface 252 is inclined in a direction away from the groove side wall 112; when the hook 22 is provided on the groove side wall 112, the guide surface 252 is inclined in a direction away from the end wall 21. During the installation process of the hook 22 and the limiting groove 113, the inclined guide surface 252 plays a guiding role, facilitating the hook 22 to enter the limiting groove 113. After the installation is completed, the stop surface 251 will not directly abut against the limiting wall 1131, but when the conductive block 20 moves along the first direction, the stop surface 251 can abut against the limiting wall 1131 to limit the displacement of the conductive block 20. The hook 22 can be a straight structure, and form a certain angle with the stop surface 251, such as 45°, 50°, 55°, 60°, etc., which is not limited in this application.
[0047] In some embodiments, the elastic arm 24 includes a slope 241, which is located at one end of the elastic arm 24 away from the peripheral wall 231. The slope 241 is inclined in a direction away from the end wall 21 and the other of the groove side walls 112, and is connected to the guide surface 252.
[0048] Specifically, the elastic arm 24 also includes a flat surface, connected to a sloped surface 241. When the hook 22 is positioned on the end wall 21, the sloped surface 241 is tilted away from the slot sidewall 112. When the hook 22 is positioned on the slot sidewall 112, the sloped surface 241 is tilted away from the end wall 21. The sloped surface 241 reduces the thickness of the elastic arm 24, facilitating its elastic deformation and allowing the hook portion 25 to engage the retaining groove 113.
[0049] Please refer to Figure 5-Figure 6 , Figure 5 yes Figure 1 A cross-sectional view of the battery module shown, Figure 6 yes Figure 5 The enlarged schematic diagram of the battery module part C is shown. In some embodiments, when the conductive block 20 is installed in the installation slot 11 , each end wall 21 and the corresponding slot side wall 112 are clearance-fitted.
[0050] It is understood that during the actual assembly process, the conductive block 20 is pushed in along the first direction. Since the slot sidewalls 112 and the end wall 21 are clearance-fitted, while the hooks 22 and the limiting slots 113 are interference-fitted, the conductive block 20 is only subjected to a small friction force between the hooks 22 and the limiting slots 113 during the pushing process, facilitating the assembly of the conductive block 20 and the end plate body 10. Finally, the conductive block 20 enters the mounting slot 11 of the end plate body 10, and the assembly is complete. It is understood that after the conductive block 20 is installed, there is still a slight amount of movable clearance. This clearance can eliminate errors caused by manufacturing and assembly, allowing the conductive block 20 to be better assembled with the busbar via fasteners later, thereby reducing manufacturing costs and improving assembly efficiency.
[0051] Please continue to refer to Figure 4 In some embodiments, the conductive block 20 further includes two first plug-in portions 26, and each of the end walls 21 is provided with a first plug-in portion 26 protruding from one end close to the groove bottom wall 111. Each of the groove side walls 112 includes a bottom end close to the groove bottom wall 111, and the bottom end is recessed away from the mounting groove 11 to form a fixed groove 1121. Each of the first plug-in portions 26 is correspondingly plugged into one of the fixed grooves 1121.
[0052] Specifically, the fixing groove 1121 is connected to the mounting groove 11, and the width of the fixing groove 1121 extending along the second direction is greater than the width of the mounting groove 11 extending along the second direction. When the conductive block 20 is installed in the mounting groove 11, the two protruding first plug-in parts 26 are plugged into the fixing grooves 1121 at both ends, wherein the end plate body 10 includes a fixing groove wall forming the fixing groove 1121, and the top of the first plug-in part 26 abuts against the fixing groove wall at the top to limit the movement of the first plug-in part 26 along the third direction.
[0053] The third direction is a vertical direction relative to the first direction and the second direction, and the third direction is perpendicular to the first direction and the second direction.
[0054] In some embodiments, the conductive block 20 includes two second plug-in portions 27, and a second plug-in portion 27 is protruded from one end of each end wall 21 away from the groove bottom wall 111. The groove side wall 112 includes a top end away from the groove bottom wall 111, and the end plate body 10 includes a top surface 1122 connected to the top end, and the second plug-in portion 27 abuts against the top surface 1122.
[0055] Specifically, the top surface 1122 is connected to the top of the slot sidewall 112 and extends in the second direction. Each end wall 21 has a first plug-in portion 26 protruding from the end closest to the slot bottom wall 111, and a second plug-in portion 27 protruding from the end farther from the slot bottom wall 111. Each first plug-in portion 26 is plugged into a corresponding fixing slot 1121, while the second plug-in portion abuts against the top surface 1122.
[0056] As will be appreciated, the second plug-in portion 27 is positioned above the first plug-in portion 26 to limit the movement of the conductive block 20 in the third direction. In actual use, the battery module 100 experiences a significant load in the third direction, and the positional limitations of the first and second plug-in portions 26, 27 in the third direction effectively ensure the secure mounting of the conductive block 20 on the end plate body 10, limiting displacement of the conductive block 20 in the third direction.
[0057] Specifically, when the conductive block 20 is installed in the mounting slot 11 along the first direction, due to the limiting constraints of the first plug-in portion 26 and the second plug-in portion 27, the conductive block 20 can only move parallel to the first and second directions. The end wall 21 and the slot sidewall 112 limit the movement of the conductive block 20 in the second direction. At the same time, the first and second limiting members limit the movement of the conductive block 20 in the first direction. Therefore, the structure of the conductive block 20 can limit the relative displacement of the conductive block 20 and the end plate body 10 in at least three directions. The multi-directional limiting avoids the previous situation of insufficient constraints, can reduce some of the external impact on the bus, and prevent fatigue failure of the bus.
[0058] In some embodiments, each of the first plug-in portions 26 includes a protruding structure 271 extending away from the slot bottom wall 111 . The battery module 100 further includes a bus bar installed between the two protruding structures 271 .
[0059] Specifically, the protruding structure 271 extends along the third direction and away from the bottom wall 111 of the groove, and an assembly groove for accommodating the bus is formed between the two oppositely arranged protruding structures 271, which facilitates the bus to be installed in the assembly groove and fixedly connected to the conductive block 20.
[0060] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.
Claims
1. A battery module, characterized in that: include: The end plate body is provided with a mounting groove, the end plate body includes a groove bottom wall and two groove side walls forming the mounting groove, the two groove side walls are arranged at opposite ends of the groove bottom wall, and each of the groove side walls is respectively provided with a first limiting member; A conductive block is installed in the installation slot, the conductive block includes two end walls, each end wall faces one of the slot side walls, and the end wall is provided with a second limiting member corresponding to the first limiting member; Wherein, one of the first limiting member and the second limiting member is a limiting groove, and the other is a hook, and the hook is engaged in the limiting groove to limit the displacement of the conductive block.
2. The battery module according to claim 1, wherein: The first limiting member is a hook, and the second limiting member is a limiting groove.
3. The battery module according to claim 2, characterized in that: The end wall is provided with an opening and includes a peripheral wall surrounding the opening. The hook includes an elastic arm and a hook holding portion. The elastic arm is arranged in the opening. One end of the elastic arm is elastically connected to the peripheral wall, and the other end of the elastic arm is connected to the hook holding portion. The hook holding portion is protruding toward the limiting groove.
4. The battery module according to claim 3, characterized in that: The hooking portion includes a stop surface and a guide surface, one end of the guide surface is connected to the elastic arm, and the other end is inclined in the direction away from the end wall and the elastic arm, the stop surface is connected to the guide surface, and the other of the end wall and the groove side wall includes a limiting wall forming the limiting groove, and when the hooking portion is clamped in the limiting groove, the limiting wall and the stop surface are limited and matched.
5. The battery module according to claim 4, characterized in that: The elastic arm includes an inclined surface, which is located at one end of the elastic arm away from the peripheral wall. The inclined surface is inclined in a direction away from the end wall and the other of the groove side walls and is connected to the guide surface.
6. The battery module according to claim 3, characterized in that: The elastic arm and the hooking portion are an integrally formed structure.
7. The battery module according to any one of claims 1 to 6, characterized in that: When the conductive block is installed in the installation slot, each end wall is clearance-fitted with the corresponding slot side wall.
8. The battery module according to any one of claims 1 to 6, characterized in that: The conductive block also includes two first plug-in portions, and each end wall is provided with a first plug-in portion protruding from one end close to the bottom wall of the groove. Each groove side wall includes a bottom end close to the bottom wall of the groove, and the bottom end is recessed away from the mounting groove to form a fixed groove, and each first plug-in portion is correspondingly plugged into one of the fixed grooves.
9. The battery module according to claim 8, characterized in that: The conductive block includes two second plug-in parts, and a second plug-in part is protruded from one end of each end wall away from the bottom wall of the groove. The groove side wall includes a top end away from the bottom wall of the groove, and the end plate body includes a top surface connected to the top end, and the second plug-in part abuts against the top surface.
10. The battery module according to claim 9, characterized in that: Each of the first plug-in portions includes a protruding structure extending away from the bottom wall of the slot. The battery module also includes a bus bar installed between the two protruding structures.
11. A battery pack, characterized in that: Comprising the battery module according to any one of claims 1 to 10.