Novel lithium battery cover plate structure

Abstract

The utility model relates to the technical field of battery cover plates, in particular to a novel lithium battery cover plate structure, which aims to solve the problems of loosening risk and poor stability of a lithium battery cover plate under vibration or impact in the prior art, and comprises a lithium battery body and two groups of battery cover plate structures arranged at two ends of the lithium battery body, and the battery cover plate structures are respectively used as a positive electrode and a negative electrode of the lithium battery body. Through the upper pressing block red copper layer and the lower red copper connecting piece, the mechanical strength of connection is enhanced, the stability of overall connection is improved, and the loosening risk under vibration or impact is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery covers, and more specifically, to a novel lithium battery cover structure. Background Art

[0002] A lithium battery cover is a protective component used on the outside of a lithium-ion battery, usually made of metal or plastic. Its main function is to protect the battery cells inside the battery and prevent damage to the battery from the external environment. It also provides mechanical strength to ensure the safety of the battery during use. Excellent cover design has an important impact on extending battery life and ensuring user safety. However, the lithium battery cover in the existing technology is at risk of loosening under vibration or impact and has poor stability. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, meet practical needs, and provide a new lithium battery cover structure to solve the problems in the prior art of lithium battery covers having the risk of loosening under vibration or impact and poor stability.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a novel lithium battery cover structure, comprising a lithium battery body, and two battery cover structures arranged at both ends of the lithium battery body, the battery cover structures serving as the positive electrode and negative electrode of the lithium battery body respectively;

[0005] The battery cover structure includes a PP insulating bracket, a lower copper connecting piece is provided at the bottom of the PP insulating bracket, a lower connecting block is provided between the lower copper connecting piece and the PP insulating bracket, an upper connecting block is provided on the top of the PP insulating bracket, an upper pressing block copper layer is provided on the top of the upper connecting block, and an upper pressing block aluminum layer is provided on the top of the upper pressing block copper layer;

[0006] The bottom of the copper layer of the upper pressing block is punched to form a plurality of convex step structures, and the convex step structure is stretched downward to form a boss structure, the bottom of the boss structure is punched to form a triangular backset plate structure, the top of the lower copper connecting piece is punched to form a plurality of concave-convex platform structures, the top of the concave-convex platform structure is punched to form a through-hole structure, and the through-hole structure surface is punched to form a lower step structure, and the boss structure formed by punching the copper layer of the upper pressing block and the lower step structure formed by punching the lower copper connecting piece are fixed by riveting and flanging.

[0007] Preferably, the boss structure formed by stamping the copper layer of the upper pressing block and the lower step structure formed by stamping the lower copper connecting piece are fixed by riveting and flanging, and then fixed by laser welding.

[0008] Preferably, the upper pressing block copper layer and the upper pressing block aluminum layer are riveted, and the upper pressing block copper layer and the upper pressing block aluminum layer are riveted and then welded by laser.

[0009] Preferably, an insulating sealing ring is provided between the convex step structure formed by punching the bottom of the copper layer of the upper pressing block and the PP insulating bracket, and the insulating sealing ring is made of fluororubber.

[0010] Preferably, the top of the lower connecting block and the bottom of the PP insulating bracket are fixed by riveting, and the lower connecting block and the PP insulating bracket are fixed by riveting and then welded by laser.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model enhances the mechanical strength of the connection through the upper pressure block copper layer and the lower copper connecting piece, improves the stability of the overall connection, and reduces the risk of loosening under vibration or impact.

[0013] 2. In the present invention, the bottom of the copper layer of the upper pressing block is punched to form a plurality of convex step structures, and the convex step structure is stretched downward to form a boss structure. The bottom of the boss structure is punched to form a triangular setback plate structure. The design can reduce unnecessary contact between components and reduce the risk of short circuit, thereby improving the overall safety of the battery.

[0014] 3. The present invention can reduce the reliance on adhesives or additional fixings in traditional methods, thereby simplifying the manufacturing process, improving production efficiency and reducing production costs.

[0015] 4. The utility model can ensure the accuracy and consistency of components during the assembly process, improve the quality control in the production process, and reduce rework and scrap rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a front view of the PP insulating bracket in the utility model;

[0018] Figure 3 This is a schematic diagram of the split structure of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Lithium battery body; 2. PP insulation bracket; 3. Lower copper connecting piece; 4. Lower connecting block; 5. Upper connecting block; 6. Upper pressing block copper layer; 7. Upper pressing block aluminum layer; 8. Insulation sealing ring. DETAILED DESCRIPTION

[0021] like Figures 1 to 3 As shown, the utility model relates to: a novel lithium battery cover structure, including a lithium battery body 1, and also includes two sets of battery cover structures arranged at both ends of the lithium battery body 1, the battery cover structures serving as the positive electrode and the negative electrode of the lithium battery body 1 respectively;

[0022] The battery cover structure includes a PP insulating bracket 2, a lower copper connecting piece 3 is provided at the bottom of the PP insulating bracket 2, a lower connecting block 4 is provided between the lower copper connecting piece 3 and the PP insulating bracket 2, an upper connecting block 5 is provided on the top of the PP insulating bracket 2, an upper pressing block copper layer 6 is provided on the top of the upper pressing block copper layer 6, and an upper pressing block aluminum layer 7 is provided on the top of the upper pressing block copper layer 6;

[0023] Specifically, the upper pressing block copper layer 6 and the lower copper connecting piece 3 enhance the mechanical strength of the connection, improve the stability of the overall connection, and reduce the risk of loosening under vibration or impact.

[0024] Furthermore, the bottom of the upper pressing block copper layer 6 is punched to form a plurality of convex step structures, and the convex step structure is stretched downward to form a boss structure, the bottom of the boss structure is punched to form a triangular backset plate structure, the top of the lower copper connecting piece 3 is punched to form a plurality of concave-convex platform structures, the top of the concave-convex platform structure is punched to form a through-hole structure, and the through-hole structure is punched to form a lower step structure, and the boss structure formed by punching the upper pressing block copper layer 6 and the lower step structure formed by punching the lower copper connecting piece 3 are fixed by riveting and flanging;

[0025] Specifically, the bottom of the copper layer 6 of the upper pressing block is punched to form a plurality of convex step structures, and the convex step structure is stretched downward to form a boss structure, and the bottom of the boss structure is punched to form a triangular reverse plate structure design, which can reduce unnecessary contact between components and reduce the risk of short circuit, thereby improving the overall safety of the battery.

[0026] Furthermore, the boss structure formed by stamping the copper layer 6 of the upper pressing block and the lower step structure formed by stamping the lower copper connecting piece 3 are fixed by riveting and flanging, and then fixed by laser welding;

[0027] Specifically, the strength of the connection between the upper pressing block copper layer 6 and the lower copper connecting piece 3 is increased.

[0028] Furthermore, the upper pressing block copper layer 6 and the upper pressing block aluminum layer 7 are riveted, and the upper pressing block copper layer 6 and the upper pressing block aluminum layer 7 are then laser welded after being riveted;

[0029] Specifically, the connection strength between the upper pressing block copper layer 6 and the upper pressing block aluminum layer 7 is increased.

[0030] Furthermore, an insulating sealing ring 8 is provided between the convex step structure formed by stamping the bottom of the upper copper layer 6 and the PP insulating bracket 2. The insulating sealing ring 8 is made of fluororubber.

[0031] Specifically, the insulating sealing ring 8 is provided to ensure the insulating sealing between the convex step structure formed by punching the bottom of the copper layer 6 of the upper pressing block and the PP insulating bracket 2.

[0032] Furthermore, the top of the lower connecting block 4 is fixed to the bottom of the PP insulating bracket 2 by riveting, and the lower connecting block 4 and the PP insulating bracket 2 are fixed by riveting and then welded by laser;

[0033] Specifically, the strength of the connection between the lower connecting block 4 and the PP insulating bracket 2 is increased.

[0034] Working principle: This embodiment provides a new type of lithium battery cover plate structure. When in use, the mechanical strength of the connection is enhanced by the upper pressing block copper layer 6 and the lower copper connecting piece 3, the stability of the overall connection is improved, and the risk of loosening under vibration or impact is reduced. A convex step structure is punched at the bottom of the upper pressing block copper layer 6, and the convex step structure is pulled downward to form a boss structure. A triangular reverse plate structure is punched in the middle of the bottom of the boss structure, and then a concave-convex platform structure is punched on the top of the lower copper connecting piece 3, a through-hole structure is punched on the concave-convex platform structure, and a lower step structure is punched on the surface of the through-hole structure. In this way, the boss structure punched out of the upper pressing block copper layer 6 and the lower step structure punched out of the lower copper connecting piece 3 can be adhered. After the convex step punched out of the bottom of the upper pressing block copper layer 6 passes through the through-hole structure, it is riveted and flanging fixed, and then laser welding is performed to connect the overcurrent.

[0035] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A novel lithium battery cover structure, comprising a lithium battery body (1), characterized in that: It also includes two sets of battery cover structures arranged at both ends of the lithium battery body (1), and the battery cover structures serve as the positive electrode and negative electrode of the lithium battery body (1) respectively; The battery cover plate structure comprises a PP insulating support (2), a lower copper connecting piece (3) is provided at the bottom of the PP insulating support (2), a lower connecting block (4) is provided between the lower copper connecting piece (3) and the PP insulating support (2), an upper connecting block (5) is provided at the top of the PP insulating support (2), an upper pressing block copper layer (6) is provided at the top of the upper connecting block (5), and an upper pressing block aluminum layer (7) is provided at the top of the upper pressing block copper layer (6).

2. A novel lithium battery cover structure according to claim 1, characterized in that: The bottom of the upper pressing block copper layer (6) is punched to form a plurality of convex step structures, and the convex step structures are stretched downward to form a boss structure, the bottom of the boss structure is punched to form a triangular back-set plate structure, the top of the lower copper connecting piece (3) is punched to form a plurality of concave-convex platform structures, the top of the concave-convex platform structure is punched to form a through-hole structure, the through-hole structure surface is punched to form a lower step structure, and the boss structure punched to form the upper pressing block copper layer (6) and the lower step structure punched to form the lower copper connecting piece (3) are fixed by riveting and flanging.

3. The novel lithium battery cover structure according to claim 1, characterized in that: The boss structure formed by punching the copper layer (6) of the upper pressing block and the lower step structure formed by punching the lower copper connecting piece (3) are fixed by riveting and flanging, and then fixed by laser welding.

4. The novel lithium battery cover structure according to claim 1, characterized in that: The upper pressing block copper layer (6) and the upper pressing block aluminum layer (7) are riveted, and the upper pressing block copper layer (6) and the upper pressing block aluminum layer (7) are then laser welded after being riveted.

5. The novel lithium battery cover structure according to claim 1, characterized in that: An insulating sealing ring (8) is provided between the convex step structure formed by punching the bottom of the upper pressing block copper layer (6) and the PP insulating bracket (2), and the insulating sealing ring (8) is made of fluororubber.

6. The novel lithium battery cover structure according to claim 1, characterized in that: The top of the lower connecting block (4) and the bottom of the PP insulating support (2) are fixed by riveting, and the lower connecting block (4) and the PP insulating support (2) are then laser welded after being riveted.

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