Module battery pole plate and module battery thereof

Abstract

The utility model relates to a module battery pole column plate and a module battery thereof in the technical field of battery modules, the module battery pole column plate comprises a top plate and an insulating bottom shell, two ends of the top plate and the insulating bottom shell are respectively provided with a positive electrode contact part and a negative electrode contact part, and the positive electrode contact part and the negative electrode contact part respectively comprise a conductive block and a flat-head pole column. The middle part of the flat-end pole is a pole part with a columnar structure, the top end of the flat-end pole is a limiting convex disc part which protrudes outwards, the middle part of the conductive block is provided with a clearance hole, a clamp spring is arranged between the limiting convex disc part and the top end surface of the conductive block, and the clamp spring is clamped between the limiting convex disc part and the conductive block to form a limiting structure; the clamping spring is clamped between the limiting convex disc part and the conductive block to form a limiting structure, so that a stable connecting structure between the limiting convex disc part and the conductive block can still be kept under the condition that the flat head rivet does not need to be riveted in a spin riveting manner.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a module battery pole plate and a module battery thereof. Background Art

[0002] Generally, a battery module is provided on the top of a square battery. The battery module includes a cover plate body, a lower plastic, a connecting piece and a pole column mounted on the cover plate body. As a main component of an automotive power battery, the safety performance of the battery module mainly used for circuit connection is extremely important.

[0003] According to the Chinese utility model patent with the publication number CN219717043U, there is disclosed a battery cover plate with a good insulation structure. Among them, the positive contact part is composed of a positive conductive block and a positive flat head rivet. In this structure, a downward convex isolation sleeve is provided on the bottom end surface of the insulation base. The isolation sleeve is respectively sleeved in the middle parts of the positive contact part and the negative contact part, and the isolation sleeve is inserted between the positive contact part and the negative contact part and the first insertion hole, so that a good insulation isolation structure is formed between the middle parts of the positive contact part and the negative contact part and the top plate, ensuring the original insulation and short-circuit prevention efficiency of the battery cover plate.

[0004] For the traditional conductive block and the flat head rivet, the flat head rivet is inserted into the conductive block, and the end of the flat head rivet is riveted and deformed outward by a spinning riveting process to abut against the top end surface of the conductive block, thus completing the fixation between the conductive block and the flat head rivet. However, when spinning and riveting the flat head rivet, other components of the battery cover plate may be damaged. Therefore, it is urgent to develop a module battery pole plate and a module battery thereof to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a module battery pole plate and a module battery thereof, in order to better solve the technical problem that when spinning and riveting a flat head rivet, other components of the battery cover plate may be damaged.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The module battery pole plate includes a top plate and an insulating bottom case. Positive contact parts and negative contact parts are respectively provided at both ends of the top plate and the insulating bottom case. The bottoms of the positive contact parts and the negative contact parts are used to connect the battery cells inside the module battery. Both the positive contact part and the negative contact part include a conductive block and a flat head pole. The middle part of the flat head pole is a columnar pole part, and the top end of the flat head pole is a limiting convex disc part protruding outwards. A clearance hole matching the limiting convex disc part is opened in the middle of the conductive block. The conductive block is sleeved on the middle part of the pole part through the clearance hole, and the limiting convex disc part is located above the clearance hole. A snap spring is arranged between the limiting convex disc part and the top end face of the conductive block. The snap spring is clamped between the limiting convex disc part and the conductive block to form a limiting structure.

[0008] In the above description, as a further solution, the bottom of the flat head pole is a bottom plate. The bottom plate is horizontally arranged in a plate-like structure at the bottom end of the pole part. The top of the flat head pole passes through the insulating bottom case and the top plate in sequence. The limiting convex disc part extends above the top plate to be connected with the conductive block and the snap spring. The bottom plate abuts against the bottom end face of the insulating bottom case.

[0009] In the above description, as a further solution, an insulating component is arranged between the positive contact part and the negative contact part and the top plate. The insulating component includes an insulating rubber seat. The insulating rubber seat is arranged between the positive conductive block and the negative conductive block and the top plate. The bottoms of the positive conductive block and the negative conductive block are both embedded in the insulating rubber seat.

[0010] In the above description, as a further solution, the insulating component further includes a sealing ring. The sealing ring is sleeved on the middle part of the flat head pole. The upper edges of the sealing ring respectively extend between the top plate and the side wall of the flat head pole.

[0011] In the above description, as a further solution, an exhaust grille is opened in the middle of the insulating bottom case. A through hole is opened in the middle of the top plate. The through hole is located above the exhaust grille. An explosion-proof film is arranged inside the through hole. The explosion-proof film covers above the exhaust grille.

[0012] In the above description, as a further solution, a first liquid injection hole and a second liquid injection hole are respectively opened in the middle parts of the top plate and the insulating bottom case. The first liquid injection hole is located above the second liquid injection hole. A sealing nail is arranged at the top of the top plate. The bottom of the sealing nail is inserted into the first liquid injection hole and the second liquid injection hole.

[0013] A module battery is provided with the above-mentioned module battery pole plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] The module battery pole plate and the module battery of the present application, wherein both the positive contact part and the negative contact part include a conductive block and a flat head pole. The top end of the flat head pole is a limiting convex disc part protruding outward. A snap spring is provided between the limiting convex disc part and the top surface of the conductive block. A limiting structure is formed by clamping the snap spring between the limiting convex disc part and the conductive block. Without the need to spin-rivet and flatten the flat head rivet, a stable connection structure between the limiting convex disc part and the conductive block can still be maintained. At the same time, the flat head pole can be installed without using the traditional rotary riveting process, effectively reducing the situation that the battery cover plate is damaged due to the large pressure received during rotary riveting, resulting in damage to other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic exploded perspective view of the module battery pole plate of the present utility model;

[0017] Figure 2 is Figure 1 a partial enlarged structural schematic diagram of A in

[0018] Figure 3 is a schematic cross-sectional view of the module battery pole plate of the present utility model along the B-B direction;

[0019] Figure 4 is Figure 3 a partial enlarged structural schematic diagram of C in

[0020] In the figure: 1 - top plate, 11 - through hole, 12 - first liquid injection hole, 2 - insulating bottom shell, 21 - exhaust grille, 22 - second liquid injection hole, 3 - positive contact part, 31 - positive conductive block, 32 - flat head pole, 4 - negative contact part, 5 - sealing nail, 6 - explosion-proof sheet, 8 - insulating component, 81 - sealing ring, 82 - insulating rubber seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model. The present utility model will be described in detail below with reference to the drawings.

[0022] Please refer to Figures 1-4, the module battery terminal plate in its specific implementation includes a top plate 1 and an insulating bottom case 2. Positive contact parts 22 and negative contact parts 4 are respectively provided at both ends of the top plate 1 and the insulating bottom case 2. The bottoms of the positive contact parts 22 and the negative contact parts 4 are used to connect the battery cells inside the module battery. Both the positive contact parts 22 and the negative contact parts 4 include conductive blocks 31 and flat-head poles 32. The middle part of the flat-head pole 32 is a columnar pole part 322, and the top end of the flat-head pole 32 is an outwardly protruding limit convex disc part 323. A clearance hole 311 matching the limit convex disc part 323 is opened in the middle of the conductive block 31. The conductive block 31 is sleeved on the middle part of the pole part 322 through the clearance hole 311, and the limit convex disc part 323 is located above the clearance hole 311. A snap spring 9 is provided between the limit convex disc part 323 and the top end surface of the conductive block 31. The snap spring 9 is clamped between the limit convex disc part 323 and the conductive block 31 to form a limiting structure.

[0023] An exhaust grille 21 is opened in the middle of the insulating bottom case 2, and a through hole 11 is opened in the middle of the top plate 1. The through hole 11 is located above the exhaust grille 21. An explosion-proof film 6 is provided inside the through hole 11. The explosion-proof film 6 covers the exhaust grille 21. First liquid injection holes 12 and second liquid injection holes 22 are respectively opened in the middle parts of the top plate 1 and the insulating bottom case 2. The first liquid injection holes 12 are located above the second liquid injection holes 22. A sealing nail 5 is provided on the top of the top plate 1. The bottom of the sealing nail 5 is inserted into the first liquid injection holes 12 and the second liquid injection holes 22.

[0024] Both the positive contact parts 22 and the negative contact parts 4 include conductive blocks 31 and flat-head poles 32. The top end of the flat-head pole 32 is an outwardly protruding limit convex disc part 323. A snap spring 9 is provided between the limit convex disc part 323 and the top end surface of the conductive block 31. The snap spring 9 is clamped between the limit convex disc part 323 and the conductive block 31 to form a limiting structure. As Figure 4 shown, without the need to spin-rivet and flatten the flat-head rivets, a stable connection structure between the limit convex disc part 323 and the conductive block 31 can still be maintained.

[0025] Specifically, as Figure 2 and 3 shown, the bottom of the flat-head pole 32 is a bottom plate 321. The bottom plate 321 is horizontally arranged in a plate-shaped structure at the bottom end of the pole part 322. The top of the flat-head pole 32 passes through the insulating bottom case 2 and the top plate 1 in sequence. The limit convex disc part 323 extends above the top plate 1 to be connected with the conductive block 31 and the snap spring 9. The bottom plate 321 abuts against the bottom end surface of the insulating bottom case 2. By the bottom plate 321 abutting against the bottom end surface of the insulating bottom case 2, and at the same time, the limit convex disc part 323 can form a stable connection structure with the conductive block 31 through the snap spring 9, a limiting structure of upper and lower clamping can be formed between the top plate 1 and the insulating bottom case 2, providing good connection stability for the whole module battery terminal plate.

[0026] For a further solution, specifically, as Figure 2 and 3 shown, an insulating component 8 and a sealing ring 81 are provided between the positive electrode contact portion 22 and the negative electrode contact portion 4 and the top plate 1. The insulating component 8 includes an insulating rubber seat 82. The insulating rubber seat 82 is disposed between the positive electrode conductive block 31 and the negative electrode conductive block 31 and the top plate 1. The bottoms of the positive electrode conductive block 31 and the negative electrode conductive block 31 are both embedded in the insulating rubber seat 82. The sealing ring 81 is sleeved in the middle of the flat head pole column 32, and the upper edge of the sealing ring 81 extends between the top plate 1 and the side wall of the flat head pole column 32 respectively.

[0027] Through the structure that the positive electrode conductive block 31 and the negative electrode conductive block 31 are respectively embedded in the insulating rubber seat 82, on the one hand, it plays a role in isolating and insulating the positive electrode conductive block 31 and the negative electrode conductive block 31 from the top plate 1. On the other hand, the insulating rubber seat 82 is fixedly connected to both ends of the top plate 1, playing a role in positioning the positive electrode conductive block 3131 and the negative electrode conductive block 31 on the top end surface of the top plate 1. A rubber sealing ring 81 with good insulating performance is sleeved in the middle of the flat head pole column 32. At the same time, the upper edge of the sealing ring 81 extends between the top plate 1 and the side wall of the flat head pole column 32 and the side wall of the flat head pole column 32 respectively, forming a good covering and isolating structure for the side wall of the flat head pole column 32, effectively preventing the situation that the flat head pole column 32 and the flat head pole column 32 are short-circuited through the top plate 1.

[0028] A module battery, and the module battery is provided with the above-mentioned module battery pole plate.

[0029] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A module battery column plate, comprising a top plate and an insulating bottom shell, wherein the top plate and the insulating bottom shell are provided with a positive contact portion and a negative contact portion at both ends, respectively, and the bottoms of the positive contact portion and the negative contact portion are used to connect the battery cells inside the module battery, characterized in that: The positive electrode contact part and the negative electrode contact part both include a conductive block and a flat-head pole, the middle part of the flat-head pole is a pole part with a columnar structure, the top of the flat-head pole is a limiting convex disc part protruding outward, the middle part of the conductive block is provided with an air avoidance hole matching the limiting convex disc part, the conductive block is sleeved on the middle part of the pole part through the air avoidance hole, and the limiting convex disc part is located above the air avoidance hole, a retaining spring is provided between the limiting convex disc part and the top surface of the conductive block, and the retaining spring is clamped between the limiting convex disc part and the conductive block to form a limiting structure.

2. The module battery column plate according to claim 1, characterized in that: The bottom of the flat-head pole is a bottom plate, which is horizontally arranged at the bottom end of the pole part in a plate-type structure. The top of the flat-head pole passes through the insulating bottom shell and the top plate in sequence. The limiting convex disc part extends to the top of the top plate and is connected to the conductive block and the retaining spring, and the bottom plate abuts against the bottom end surface of the insulating bottom shell.

3. The module battery column plate according to claim 2, characterized in that: An insulating component is provided between the positive contact part, the negative contact part and the top plate, and the insulating component includes an insulating rubber seat, which is arranged between the positive conductive block, the negative conductive block and the top plate, and the bottoms of the positive conductive block and the negative conductive block are embedded in the insulating rubber seat.

4. The module battery pole plate according to claim 3, characterized in that: The insulating assembly also includes a sealing ring, which is sleeved on the middle part of the flat-head pole, and the upper edge of the sealing ring extends between the top plate and the side wall of the flat-head pole.

5. The module battery pole plate according to claim 4, characterized in that: An exhaust grille is provided in the middle of the insulating bottom shell, a through hole is provided in the middle of the top plate, the through hole is located above the exhaust grille, an explosion-proof plate is provided inside the through hole, and the explosion-proof plate covers the exhaust grille.

6. The module battery column plate according to any one of claims 1 to 5, characterized in that: The top plate and the insulating bottom shell are respectively provided with a first injection hole and a second injection hole in the middle, the first injection hole is located above the second injection hole, a sealing nail is provided on the top of the top plate, and the bottom of the sealing nail is inserted into the first injection hole and the second injection hole.

7. Modular battery, characterized in that: The module battery is provided with the module battery pole plate according to any one of claims 1 to 6.

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