A power battery composite pole structure
By using the moving and resetting mechanisms of the copper base and cylindrical structure, the problem of loose threaded connections in the assembly of power battery terminals was solved, achieving stable connection of the terminals and improving the reliability and stability of the assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DAZHOU XINHONG INNOVATION PRECISION IND CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-24
AI Technical Summary
In the current assembly of power battery terminals, the threaded connection has insufficient anti-rotation capability, which makes the connectors easy to loosen, affecting the reliability and stability of the assembly.
It adopts a copper base and cylindrical structure, combined with a moving mechanism and a resetting mechanism. Through the cooperation of the insertion post and the mounting groove, it realizes the limited installation and anti-rotation of the bidirectional threaded rod, ensuring the stable connection of the pole post.
It improves the stability and reliability of pole assembly, prevents loosening, and has a simple structure that is easy to use.
Smart Images

Figure CN224554481U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite terminal technology for power batteries, and in particular to a composite terminal structure for power batteries. Background Technology
[0002] Composite terminals for power batteries are key components for connecting dissimilar materials (copper / aluminum) in the internal and external circuits of a battery. Through innovative structural and material technologies, they improve the battery's conductivity, sealing, and production efficiency. The external circuit of a power battery requires lightweight, low-cost aluminum, while the internal negative electrode current collector is copper foil. Therefore, a copper-aluminum composite terminal is needed to achieve electrical connection. Typically, two sets of terminals need to be assembled.
[0003] During the assembly of the two sets of pole posts, threads are usually used. However, the use of threads can lead to the problem that the connecting parts are prone to loosening due to insufficient anti-rotation capability. This seriously affects the reliability and stability of the assembly and is not conducive to assembling the two sets of pole posts. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a composite electrode structure for power batteries, which solves the problems mentioned in the background.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A composite terminal structure for a power battery includes a copper base, a first terminal fixedly mounted on the top of the copper base, a baffle plate fixedly mounted on the top of the first terminal, a cylindrical body placed on the top of the copper base, a second terminal fixedly mounted on the top of the cylindrical body, an installation groove formed on the surface of the cylindrical body, an installation post installed inside the copper base via a moving mechanism, and a slot formed inside the copper base, with an insertion post installed on the inner wall of the slot via a reset mechanism.
[0007] Preferably, the moving mechanism includes a bidirectional threaded rod rotatably mounted inside a copper base, a moving block threadedly fitted on the surface of the bidirectional threaded rod, a moving plate fixedly mounted on the top of the moving block, one side of the moving plate and one end of the mounting column being fixedly mounted, and a slot being formed on the surface of the bidirectional threaded rod.
[0008] Preferably, the reset mechanism includes a sliding column slidably mounted on the inner wall of the slot, a sliding plate fixedly mounted on one end of the sliding column, a spring fixedly mounted on the inner wall of the slot, one end of the spring and one side of the sliding plate being fixedly mounted, and one side of the sliding plate and one end of the insertion column being fixedly mounted.
[0009] Preferably, the top of the copper base is provided with a sliding groove, and the inner wall of the sliding groove is in contact with the surface of the moving plate.
[0010] Preferably, the inner wall of the mounting groove is adapted to the surface of the mounting post, and the inner wall of the slot is adapted to the surface of the insertion post.
[0011] Preferably, the number of mounting slots is two sets and they are arranged symmetrically, and the number of moving blocks, moving plates and mounting columns is two sets and they are arranged symmetrically.
[0012] Preferably, the bottom of the second pole post and the top of the baffle plate are in contact with each other, and the inner wall of the cylinder is adapted to the surface of the first pole post.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This power battery composite terminal structure, by inserting the cylindrical body at the bottom of the second terminal into the surface of the first terminal, makes the bottom of the second terminal fit with the baffle plate. By using a reset mechanism to drive the insertion post away from the inner wall of the slot, the limiting installation of the bidirectional threaded rod can be released. Then, by using a moving mechanism to drive the two sets of mounting posts to move towards each other, the two sets of mounting posts are respectively inserted into the inner walls of the two sets of mounting slots, thus limiting the installation of the cylindrical body and the second terminal. This allows for assembly. By using a reset mechanism to drive the insertion post into the inner wall of the slot, the bidirectional threaded rod is limited and installed, thus preventing the bidirectional threaded rod from rotating. This makes the assembly more stable and prevents it from easily falling off. The structure is simple and easy to use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the isometric projection of this utility model;
[0015] Figure 2 This is a structural schematic diagram of the front sectional view of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the present invention, shown in a side sectional view.
[0017] Figure 4 This is an enlarged view of section A of this utility model;
[0018] Figure 5 This is an enlarged view of section B of this utility model.
[0019] In the diagram: 1. Copper base; 2. First pole post; 3. Baffle plate; 4. Cylinder; 5. Second pole post; 6. Mounting groove; 7. Bidirectional threaded rod; 8. Moving block; 9. Moving plate; 10. Mounting post; 11. Slot; 12. Groove; 13. Sliding post; 14. Spring; 15. Slide plate; 16. Insert post; 17. Sliding groove. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example: Refer to Figure 1-5 This utility model provides a technical solution: a composite terminal structure for a power battery, including a copper base 1, a first terminal 2 fixedly mounted on the top of the copper base 1, a baffle plate 3 fixedly mounted on the top of the first terminal 2, a cylindrical body 4 placed on the top of the copper base 1, a second terminal 5 fixedly mounted on the top of the cylindrical body 4, the bottom of the second terminal 5 fitting against the top of the baffle plate 3, the inner wall of the cylindrical body 4 adapting to the surface of the first terminal 2, an installation groove 6 formed on the surface of the cylindrical body 4, and an installation column 10 mounted inside the copper base 1 via a moving mechanism, the moving mechanism including a bidirectional mechanism rotatably mounted inside the copper base 1. The threaded rod 7 has a movable block 8 threadedly fitted on its surface. A movable plate 9 is fixedly installed on the top of the movable block 8. A groove 17 is opened on the top of the copper base 1. The inner wall of the groove 17 fits against the surface of the movable plate 9, limiting the movement of the movable plate 9 and making its movement more stable. One side of the movable plate 9 is fixedly installed on one end of the mounting column 10, which facilitates the movement of the mounting column 10. The surface of the double-threaded rod 7 has a slot 11. There are two sets of mounting slots 6 arranged symmetrically. There are two sets of movable blocks 8, movable plates 9 and mounting columns 10 arranged symmetrically.
[0022] Specifically, the copper base 1 has a slot 12 inside. A pin 16 is installed on the inner wall of the slot 12 via a reset mechanism. The reset mechanism includes a sliding post 13 slidably mounted on the inner wall of the slot 12. A sliding plate 15 is fixedly mounted on one end of the sliding post 13. A spring 14 is fixedly mounted on the inner wall of the slot 12. One end of the spring 14 is fixedly mounted to one side of the sliding plate 15, and one side of the sliding plate 15 is fixedly mounted to one end of the pin 16, facilitating the reset movement of the pin 16. The inner wall of the mounting slot 6 matches the surface of the mounting post 10, and the inner wall of the slot 11 matches the surface of the pin 16. The process involves inserting the cylinder 4 at the bottom of the second pole post 5 into the first pole post 2. The surface of the plate allows the bottom of the second pole post 5 to fit against the baffle plate 3. By using the reset mechanism to move the insertion post 16 away from the inner wall of the slot 11, the limiting installation of the bidirectional threaded rod 7 can be released. Then, by using the moving mechanism, the two sets of mounting posts 10 can be moved towards each other, so that the two sets of mounting posts 10 are respectively inserted into the inner walls of the two sets of mounting slots 6. This limits the installation of the cylinder 4 and the second pole post 5, and then assembles them. By using the reset mechanism to move the insertion post 16 into the inner wall of the slot 11, the bidirectional threaded rod 7 can be limited and installed, thus preventing the bidirectional threaded rod 7 from rotating. This makes the assembly more stable and prevents it from easily falling off. The structure is simple and easy to use.
[0023] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.
[0024] In use: When using this power battery composite terminal structure, by inserting the cylindrical body 4 at the bottom of the second terminal 5 into the surface of the first terminal 2, the bottom of the second terminal 5 is brought into contact with the blocking plate 3. By pulling the sliding column 13, the sliding plate 15 is moved, which in turn moves the insertion post 16, causing the insertion post 16 to leave the inner wall of the slot 11. This releases the limiting installation of the bidirectional threaded rod 7. Then, by rotating the bidirectional threaded rod 7, the two sets of moving blocks 8 are moved towards each other. The moving blocks 8 then move the two sets of moving plates 9 towards each other. The two sets of mounting posts 10 are moved towards each other, so that the two sets of mounting posts 10 are inserted into the inner walls of the two sets of mounting slots 6 respectively, thereby limiting the installation of the cylinder 4 and the second pole post 5, and then assembling them. By releasing the sliding post 13, the spring 14 returns to its original position and drives the sliding plate 15 to move. The sliding plate 15 drives the insertion post 16 to move, so that the insertion post 16 is inserted into the inner wall of the slot 11, thereby limiting the installation of the bidirectional threaded rod 7, thereby preventing the bidirectional threaded rod 7 from rotating, making the assembly more stable and preventing it from easily falling off. The structure is simple and easy to use.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.
Claims
1. A composite terminal structure for a power battery, comprising a copper base (1), characterized in that, The top of the copper base (1) is fixedly installed with a first pole post (2), and the top of the first pole post (2) is fixedly installed with a baffle plate (3). The top of the copper base (1) is placed with a cylinder (4), and the top of the cylinder (4) is fixedly installed with a second pole post (5). The surface of the cylinder (4) is provided with an installation groove (6). The inside of the copper base (1) is installed with an installation column (10) through a moving mechanism. The inside of the copper base (1) is provided with a slot (12), and the inner wall of the slot (12) is installed with an insertion column (16) through a reset mechanism.
2. The composite electrode structure for a power battery according to claim 1, characterized in that, The moving mechanism includes a bidirectional threaded rod (7) rotatably installed inside a copper base (1). A moving block (8) is threadedly fitted on the surface of the bidirectional threaded rod (7). A moving plate (9) is fixedly installed on the top of the moving block (8). One side of the moving plate (9) and one end of the mounting column (10) are fixedly installed. A slot (11) is opened on the surface of the bidirectional threaded rod (7).
3. The composite electrode structure for a power battery according to claim 1, characterized in that, The reset mechanism includes a sliding column (13) slidably installed on the inner wall of the slot (12), a sliding plate (15) fixedly installed at one end of the sliding column (13), a spring (14) fixedly installed on the inner wall of the slot (12), one end of the spring (14) and one side of the sliding plate (15) being fixedly installed, and one side of the sliding plate (15) and one end of the insert (16) being fixedly installed.
4. The composite electrode structure for a power battery according to claim 2, characterized in that, The top of the copper base (1) is provided with a groove (17), and the inner wall of the groove (17) is in contact with the surface of the moving plate (9).
5. A composite electrode structure for a power battery according to claim 2, characterized in that, The inner wall of the mounting groove (6) is adapted to the surface of the mounting post (10), and the inner wall of the slot (11) is adapted to the surface of the insertion post (16).
6. A composite electrode structure for a power battery according to claim 2, characterized in that, The number of the mounting slots (6) is two sets and they are arranged symmetrically. The number of the moving blocks (8), moving plates (9) and mounting columns (10) is two sets and they are arranged symmetrically.
7. The composite electrode structure for a power battery according to claim 1, characterized in that, The bottom of the second pole post (5) is in contact with the top of the baffle plate (3), and the inner wall of the cylinder (4) is adapted to the surface of the first pole post (2).