Square battery shell with high pressure resistance

Abstract

The utility model relates to the technical field of battery cases, and particularly discloses a square battery case with high pressure resistance, which comprises a case body, a battery body is arranged in the case body, and a limiting mechanism is arranged above the case body; the limiting mechanism comprises a cut corner, the cut corner is arranged on the periphery of the top end of the shell, a threaded rod penetrates out of the interior of the cut corner, the end, penetrating out of the cut corner, of the threaded rod is connected with a rotating block, a limiting block is fixed to the end, located in the cut corner, of the threaded rod, and the end, away from the threaded rod, of the limiting block is connected with an abutting block. The battery body can be located in the shell and is in an elastic clamping and pressing state through a cut corner, a rotating block, a threaded rod, a limiting block, an abutting block, a limiting hole, a bearing plate and a damping spring in cooperation with an attaching plate and a first damping spring, the situation that the battery body is collided when the shell shakes or deviates when the shell is subjected to external force pressure or collision is avoided, and the service life of the battery body is prolonged. And a protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cases, in particular to a square battery case with high voltage resistance performance. Background Technique

[0002] Currently in the market, cylindrical batteries, square batteries, and soft-pack batteries are mostly made into battery packs through parallel or series connection. The batteries used in new energy vehicles are usually square batteries, so the corresponding outer shells are also square structures.

[0003] In the existing technology, the overall capacity and area of the square battery case and the supporting battery are relatively large, and deformation may occur during use or charging, resulting in deformation of the outer shell volume, thereby causing compression or influence on the internal battery, presenting certain risks.

[0004] The existing patent (Publication No.: CN217934030U) discloses a square battery aluminum case with high voltage resistance performance. By setting the thickened part and the fillet two, both the strength at the corners of the battery outer shell body is enhanced, and the stress at the corners of the battery outer shell body can be released, thereby reducing the deformation amount and making it difficult for cracks to appear at the four corners of the battery outer shell body. The longitudinal reinforcing ribs, transverse reinforcing ribs, vent hole one, and vent hole two provided can enhance the strength of the surface of the battery outer shell body and also increase the heat dissipation area of the longitudinal reinforcing ribs, facilitating the flow of air.

[0005] In view of the above problems, although the solution given by the existing patent can improve the strength of the outer shell through the cooperation of components such as reinforcing ribs, in the actual use process, when the battery outer shell is subjected to pressure or impact, it will shake, causing pressure and knocking on the internal battery, resulting in damage. Summary of the Invention

[0006] The purpose of the utility model is to provide a square battery case with high voltage resistance performance, which can enable the battery body to be located inside the case and be in a state of elastic clamping and pressing, avoiding the situation where the battery body is knocked when the case shakes or deviates when the case is subjected to external pressure or impact, and playing a protective role, so as to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A square battery case with high voltage resistance performance, including a case, a battery body is arranged inside the case, and a limiting mechanism is arranged above the case.

[0008] The limiting mechanism includes a cut angle, which is arranged around the top of the shell, and a threaded rod is passed through the inside of the cut angle, one end of the threaded rod passing through the cut angle is connected to a rotating block, and a limiting block is fixed at one end of the threaded rod located inside the cut angle, the end of the limit block away from the threaded rod is connected to a resistance block, and a limiting hole is opened in the resistance block corresponding to the position of the limit block, a bearing plate is sleeved under the battery body, and a damping spring is embedded in the bottom end of the bearing plate.

[0009] Preferably, the abutment block is tightly fitted to the battery body, and the abutment block forms a rotating structure with the limiting block through the limiting hole.

[0010] Preferably, bonding plates are fixed on both sides of the outer wall of the abutment block, and the outer wall of the bonding plate is connected to a first shock-absorbing spring.

[0011] Preferably, connecting shells are fixed on both sides of the outer wall of the shell, and filter plates are embedded in the outer walls of the connecting shells.

[0012] Preferably, a connecting plate is fixed below the laminating plate, and an anti-collision mechanism is provided on one side of the connecting plate.

[0013] Preferably, the anti-collision mechanism comprises a connecting block, the connecting block is embedded in the filter plate, and a second shock-absorbing spring is embedded in the connecting block, and one end of the second shock-absorbing spring is connected to the connecting plate.

[0014] Preferably, the anti-collision mechanism further comprises a contact plate, the contact plate is fixed to the outer wall of the connecting plate, and rubber pads are connected to both ends of the contact plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the cutting angle, rotating block, threaded rod, limit block, abutment block, limit hole, bearing plate and damping spring, in conjunction with the laminating plate and the first shock-absorbing spring, the battery body can be located in the shell, in a state of elastic clamping and pressing, to prevent the shell from being bumped when it is shaken or offset by external pressure or impact, thus achieving a protective effect;

[0017] 2. The connecting plate, connecting block, second shock-absorbing spring, connecting plate, contact plate and rubber pad cooperate with the connecting shell and filter plate to play an anti-collision and heat dissipation effect on both sides of the shell, improve the functionality of the shell, and play a certain protective effect when subjected to external pressure or impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Overall structural view of the present utility model;

[0020] Figure 2 Internal structural view of the housing of the present utility model;

[0021] Figure 3 Structural view of the abutting block of the present utility model;

[0022] Figure 4 Structural view of the connecting plate of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1. Housing; 2. Battery body; 3. Limiting mechanism; 301. Chamfer; 302. Rotating block; 303. Threaded rod; 304. Limiting block; 305. Abutting block; 306. Limiting hole; 307. Bearing plate; 308. Damping spring; 4. Fitting plate; 5. First shock-absorbing spring; 6. Connecting shell; 7. Filter plate; 8. Connecting plate; 9. Anti-collision mechanism; 901. Connecting block; 902. Second shock-absorbing spring; 903. Connecting plate; 904. Abutting plate; 905. Rubber pad. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0026] The present utility model provides a technical solution:

[0027] Please refer to Figures 1 to 3, A square battery case with high voltage resistance performance, including a case 1. Inside the case 1, there is a battery body 2, and a limiting mechanism 3 is arranged above the case 1. The limiting mechanism 3 includes a chamfer 301, which is arranged around the top end of the case 1. A threaded rod 303 passes through the inside of the chamfer 301. One end of the threaded rod 303 passing through the chamfer 301 is connected with a rotating block 302. One end of the threaded rod 303 located inside the chamfer 301 is fixed with a limiting block 304. One end of the limiting block 304 away from the threaded rod 303 is connected with a contact block 305. The contact block 305 is provided with a limiting hole 306 corresponding to the position of the limiting block 304. A bearing plate 307 is sleeved below the battery body 2. A damping spring 308 is embedded at the bottom end of the bearing plate 307. The contact block 305 is in close contact with the battery body 2. A rotating structure is formed between the contact block 305 and the limiting block 304 through the limiting hole 306. Two sides of the outer wall of the contact block 305 are fixed with fitting plates 4, and the outer wall of the fitting plates 4 is connected with a first damping spring 5.

[0028] By adopting the above technical solution, by turning the rotating block 302, under the cooperation of the chamfer 301 and the threaded rod 303, the limiting block 304 drives the contact block 305 to press the battery body 2 tightly. The limiting hole 306 is used to prevent the contact block 305 from rotating during turning, thus achieving limiting. When pressing tightly, the bearing plate 307 is elastically supported by the damping spring 308 and abuts against the lower part of the battery body 2, so that the battery body 2 is elastically abutted inside the case 1 to avoid deviation or collision caused by pressure or impact, improving the voltage resistance performance. And in cooperation with the fitting plates 4 and the first damping spring 5, the battery body 2 is elastically supported to further improve the voltage resistance.

[0029] Specifically, as Figure 1 , Figure 3 and Figure 4 shown, two sides of the outer wall of the case 1 are fixed with connecting shells 6. A filter plate 7 is embedded on the outer wall of the connecting shells 6. A connecting plate 8 is fixed below the fitting plate 4. One side of the connecting plate 8 is provided with an anti-collision mechanism 9. The anti-collision mechanism 9 includes a connecting block 901, which is embedded in the filter plate 7. A second damping spring 902 is embedded in the connecting block 901. One end of the second damping spring 902 is connected with a connecting plate 903. The anti-collision mechanism 9 further includes a contact plate 904, which is fixed on the outer wall of the connecting plate 903. Rubber pads 905 are connected to both ends of the contact plate 904.

[0030] By adopting the above technical scheme, firstly, with the cooperation of the connecting shell 6 and the filter plate 7, the heat dissipation effect is achieved on the battery body 2, and the connecting plate 8 is fixed between the bearing plate 307 and the bonding plate 4. The second shock-absorbing spring 902 embedded can elastically push the connecting plate 903, and stably slide under the limit of the connecting block 901. When the contact plate 904 is pressurized, the offset state is avoided to affect the battery body 2. At the same time, it has a certain shock-absorbing property to improve the pressure resistance. The two ends of the contact plate 904 are bonded by the rubber pad 905 to increase the contact surface of the contact plate 904.

[0031] Working principle: The bearing plate 307 is elastically supported by the damping spring 308, and the battery body 2 is located inside the shell 1. By twisting the rotating block 302, the threaded rod 303 is threadedly connected with the cut corner 301 to adjust the position, thereby driving the resistance block 305 to make the bearing plate 307 resist and clamp the battery body 2 to play a limiting effect to prevent it from shaking due to pressure. The resistance block 305 is prevented from rotating with the limiting hole 306 when the position is adjusted, and the resistance block 304 is prevented from escaping from the limiting hole 306. The four resistance blocks 30 5, an L-shaped cross-section bonding plate 4 is fixed between the bonding plate 4 and the bearing plate 307, which is bonded to the battery body 2 and is protected from collision due to impact or pressure by the first shock-absorbing spring 5. The filter plate 7 opened by the connecting shell 6 has a heat dissipation effect. A connecting plate 8 is fixed between the bonding plate 4 and the bearing plate 307, which is used to embed the second shock-absorbing spring 902, so that the connecting plate 903 slides along the connecting block 901, thereby pushing the contact plate 904 to avoid pressure or impact on both sides to achieve pressure resistance. At the same time, the contact plate 904 is fixed by the rubber pad 905 and has pressure resistance through elasticity.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A square battery case with high voltage resistance performance, comprising a case body (1), characterized in that: A battery body (2) is arranged inside the housing (1), and a limiting mechanism (3) is arranged above the housing (1); The limiting mechanism (3) comprises a cut corner (301), the cut corner (301) being arranged around the top of the shell (1), and a threaded rod (303) passing through the inside of the cut corner (301), one end of the threaded rod (303) passing through the cut corner (301) being connected to a rotating block (302), and a limiting block (304) being fixed at one end of the threaded rod (303) located inside the cut corner (301), one end of the limit block (304) away from the threaded rod (303) being connected to a resistance block (305), and a limiting hole (306) is provided in the resistance block (305) at a position corresponding to the limit block (304), and a bearing plate (307) is sleeved below the battery body (2), and a damping spring (308) is embedded at the bottom end of the bearing plate (307).

2. The square battery case with high voltage resistance performance according to claim 1, wherein: The abutment block (305) is tightly fitted to the battery body (2), and the abutment block (305) forms a rotating structure with the limiting block (304) through the limiting hole (306).

3. The square battery case with high voltage resistance performance according to claim 1, characterized in that: Adhesive plates (4) are fixed to both sides of the outer wall of the abutment block (305), and the outer wall of the adhesive plate (4) is connected to a first shock-absorbing spring (5).

4. A square battery case with high voltage resistance performance according to claim 1, characterized in that: A connecting shell (6) is fixed to both sides of the outer wall of the shell (1), and a filter plate (7) is embedded in the outer wall of the connecting shell (6).

5. A square battery case with high voltage resistance performance according to claim 3, characterized in that: A connecting plate (8) is fixed below the laminating plate (4), and an anti-collision mechanism (9) is provided on one side of the connecting plate (8).

6. The square battery case with high voltage resistance performance according to claim 5, characterized in that: The anti-collision mechanism (9) comprises a connecting block (901), the connecting block (901) being embedded in the interior of the filter plate (7), and a second shock absorbing spring (902) being embedded in the interior of the connecting block (901), and one end of the second shock absorbing spring (902) being connected to a connecting plate (903).

7. A square battery case with high voltage resistance according to claim 6, characterized in that: The anti-collision mechanism (9) further comprises a contact plate (904), wherein the contact plate (904) is fixed to the outer wall of the connecting plate (903), and rubber pads (905) are connected to both ends of the contact plate (904).

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