CN218939859U

CN218939859U - Improved lithium battery cover plate

Info

Publication number: CN218939859U
Application number: CN202221526653.XU
Authority: CN
Inventors: 陈少翔; 梁钜江; 施伟
Original assignee: Anhui Fangzheng New Energy Technology Co ltd
Current assignee: Anhui Fangzheng New Energy Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-04-28
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses an improved lithium battery cover plate, which relates to the technical field of battery cover plate bodies and comprises a cover plate body, wherein pole through holes are symmetrically formed in the bottom of the cover plate body, a first aluminum sheet is arranged on one side of the top of the cover plate body, a second aluminum sheet is arranged on the other side of the top of the cover plate body, a first upper plastic is arranged above the first aluminum sheet, a second through hole is formed in the middle of the first upper plastic, a square boss is connected in the middle of the bottom of the first upper plastic, and a round boss is connected to one side of the bottom of the first upper plastic. The lithium battery is reasonable in structure, the square bosses with the heights not smaller than that of the round bosses are arranged at the bottoms of the first upper plastic and the second upper plastic, so that the stress areas of the first upper plastic and the second upper plastic are increased, the torque is increased, the anti-rotation torque of the first upper plastic and the second upper plastic is further enhanced, the lithium battery is not easy to loosen, and the electrical performance of the lithium battery is enhanced.

Description

Improved lithium battery cover plate

Technical Field

The utility model relates to the technical field of battery cover plate bodies, in particular to an improved lithium battery cover plate.

Background

The lithium battery generally comprises a shell and a cover plate body at the top, wherein the cover plate body is provided with an upper plastic and a lower plastic which are used for fixing the pole, the lower plastic can play a certain positioning role in the assembly process of the cover plate body, the upper plastic supports the upper part of the pole and prevents the pole from sinking, the stability of the upper plastic needs to be ensured during the assembly, the upper plastic is prevented from rotating around the pole, and thus, the sealing of the pole can be influenced, even the adverse phenomena such as pole sinking and the like can be caused, and the use effect and the service life of the lithium battery are directly influenced.

The Chinese patent literature with the publication number of CN210403786U discloses a polar plate type lithium battery cover plate with an improved structure, which has the advantage that whether a pressure relief explosion-proof mechanism is damaged or not can be found rapidly and intuitively, however, the actual anti-torsion effect of the upper plastic in the cover plate is not obvious, so that the lithium battery is easy to loose, the positions of the anode and the cathode are not easy to distinguish, the production efficiency is slowed down, and the application provides an improved lithium battery cover plate.

Disclosure of Invention

In order to overcome the above-mentioned technical problems, an object of the present utility model is to provide an improved lithium battery cover plate.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a lithium cell apron of improvement, includes the apron body, the post through-hole has been seted up to the top symmetry of apron body, top one side of apron body is provided with first aluminum sheet, the top opposite side of apron body is provided with second aluminum sheet, square recess has been seted up at the middle part of first aluminum sheet, first through-hole has been seted up in the top outside of first aluminum sheet, third through-hole has been seted up in the top outside of second aluminum sheet, first plastic on the top of first aluminum sheet is provided with, second plastic on the top of second aluminum sheet is provided with the second, the second through-hole has all been seted up at the middle part of first plastic on plastic and the second, just all be provided with square boss in the middle of the bottom of plastic on first plastic and the second, the bottom of plastic just being located first through-hole and third through-hole is provided with circular boss respectively, the below symmetry of apron body is provided with the polar plate, the top of polar plate is connected with the post.

As a further scheme of the utility model: the first through hole and the third through hole are symmetrically arranged about the axis of the cover plate body.

As a further scheme of the utility model: the bottom of apron body is connected with down the plastic, and the fourth through-hole has been seted up to the bottom of plastic just being located the below of utmost point post through-hole down, utmost point post, fourth through-hole, utmost point post through-hole, square recess and second through-hole follow supreme setting that link up down.

As a further scheme of the utility model: the height of the square boss is not smaller than that of the round boss.

As a further scheme of the utility model: the two circular bosses are respectively clamped and connected with the first through hole and the third through hole.

As a further scheme of the utility model: the inside of first last plastic is provided with the positive pole piece, the inside of second last plastic is provided with the negative pole piece.

The utility model has the beneficial effects that:

1. the lithium battery is reasonable in structure, the square bosses with the heights not smaller than that of the round bosses are arranged at the bottoms of the first upper plastic and the second upper plastic, so that the stress areas of the first upper plastic and the second upper plastic are increased, the torque is increased, the anti-rotation torque of the first upper plastic and the second upper plastic is further enhanced, the lithium battery is not easy to loosen, and the electrical performance of the lithium battery is enhanced.

2. Through set up first through-hole and third through-hole at the top of first and second aluminium sheet of light, and first through-hole and third through-hole are located corresponding position respectively for can be convenient discernment positive and negative mounting position, save time improves installation effectiveness.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the bottom structure of the first upper plastic in the present utility model;

FIG. 3 is a schematic cross-sectional view of a first upper plastic in accordance with the present utility model.

In the figure: 1. a cover plate body; 2. a post through hole; 3. a first aluminum sheet; 4. square grooves; 5. a first through hole; 6. a first upper plastic; 61. square boss; 62. a circular boss; 7. a second through hole; 8. a positive electrode block; 9. a second upper plastic; 10. a negative electrode block; 11. a polar plate; 12. a pole; 13. lower plastic; 14. and a second aluminum sheet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, an improved lithium battery cover plate comprises a cover plate body 1, pole through holes 2 are symmetrically formed in the top of the cover plate body 1, pole plates 11 are symmetrically arranged below the cover plate body 1, pole posts 12 are connected to the tops of the pole plates 11, lower plastic 13 is connected to the bottom of the cover plate body 1, fourth through holes are formed in the two ends of the bottom of the lower plastic 13 and below the pole through holes 2, a first aluminum sheet 3 is arranged on one side of the top of the cover plate body 1, a second aluminum sheet 14 is arranged on the other side of the top of the cover plate body 1, square grooves 4 are formed in the middle of the first aluminum sheet 3 and the second aluminum sheet 14, first through holes 5 are formed in one side, away from the middle of the lower plastic 13, of the second aluminum sheet 14 is provided with third through holes, the first through holes 5 and the third through holes are symmetrically arranged about the axis of the cover plate body 1, a first upper plastic 6 is arranged above the first aluminum sheet 3, a second upper plastic 9 is arranged at the top of the second aluminum sheet 14, a positive electrode block 8 is arranged in the first upper plastic 6, a negative electrode block 10 is arranged in the second upper plastic 9, second through holes 7 are formed in the middle of the first upper plastic 6 and the middle of the second upper plastic 9, firstly, the positions of the first through holes 5 and the third through holes are distinguished, so that the placement positions of the positive electrode block 8 and the negative electrode block 10 are determined, the positive electrode block 8 is placed in the first upper plastic 6, the negative electrode block 10 is placed in the second upper plastic 9, and then the top surfaces of the two pole posts 12 are respectively fixed with the positive electrode block 8 and the negative electrode block 10 through welding;

as shown in fig. 1-3, the middle parts of the bottoms of the first upper plastic 6 and the second upper plastic 9 are respectively connected with a square boss 61, the bottoms of the square bosses 61 and the bottoms of the square grooves 4 are corresponding, the bottoms of the first upper plastic 6 and the second upper plastic 9 are respectively provided with a round boss 62, the height of the square boss 61 is not smaller than that of the round boss 62, the round boss 62 is respectively clamped and connected with the first through hole 5 and the third through hole, so that the stress areas of the first upper plastic 6 and the second upper plastic 9 are increased, the torque is increased, the anti-rotation torque of the first upper plastic 6 and the second upper plastic 9 is further enhanced, the lithium battery is not easy to loosen, and the electrical performance of the lithium battery is enhanced.

The working principle of the utility model is as follows: firstly, through distinguishing the positions of the first through hole 5 and the third through hole, the placement positions of the positive electrode block 8 and the negative electrode block 10 are determined, the positive electrode block 8 is placed in the first upper plastic 6, the negative electrode block 10 is placed in the second upper plastic 9, the circular boss 62 arranged at the bottom of the first upper plastic 6 and the circular boss 62 arranged at the bottom of the second upper plastic 9 are clamped with the first through hole 5 and the third through hole respectively, then, through the through matching of the pole 12, the fourth through hole, the pole through hole 2 and the second through hole 7, the top surface of the pole 12 is fixed with the positive electrode block 8 and the negative electrode block 10 through welding, meanwhile, the square bosses 61 with the heights not smaller than the height of the circular bosses 62 are arranged at the bottoms of the first upper plastic 6 and the second upper plastic 9, so that the stress area of the first upper plastic 6 and the second upper plastic 9 is improved, the torque is increased, the rotation preventing torsion of the first upper plastic 6 and the second upper plastic 9 is further enhanced, the lithium battery is not easy to loosen, and the electrical performance of the lithium battery is enhanced.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a lithium cell apron of improvement, includes apron body (1), its characterized in that, post through-hole (2) have been seted up to the top symmetry of apron body (1), the top one side of apron body (1) is provided with first plastic (3) of light aluminum sheet, the top opposite side of apron body (1) is provided with second plastic (14) of light aluminum sheet, square boss (4) have been seted up at the middle part of first plastic (3) of light aluminum sheet, first through-hole (5) have been seted up in the top outside of first plastic (3) of light aluminum sheet, third through-hole has been seted up in the top outside of second plastic (14), the top of first plastic (3) of light aluminum sheet is provided with first last plastic (6), the top of second plastic (9) is provided with second last plastic (6) and second and all sets up second through-hole (7), just first plastic (6) and second go up in the middle of the bottom of plastic (9) all are provided with square boss (61), first plastic (6) and second plastic (9) are gone up the bottom and are provided with circular boss (11) of first plastic (9) and are located under the top of first plastic (9) respectively.

2. An improved lithium battery cover plate according to claim 1, characterized in that the first through hole (5) and the third through hole are arranged symmetrically with respect to the axis of the cover plate body (1).

3. An improved lithium battery cover plate according to claim 1, characterized in that the bottom of the cover plate body (1) is connected with a lower plastic (13), a fourth through hole is formed in the bottom of the lower plastic (13) and below the post through hole (2), and the post (12), the fourth through hole, the post through hole (2), the square groove (4) and the second through hole (7) are arranged in a penetrating manner from bottom to top.

4. An improved lithium battery cover plate according to claim 1, characterized in that the height of the square boss (61) is not smaller than the height of the circular boss (62).

5. An improved lithium battery cover plate according to claim 1, characterized in that two of said circular bosses (62) are clamped and connected with the first through hole (5) and the third through hole, respectively.

6. An improved lithium battery cover plate according to claim 1, characterized in that the first upper plastic (6) is internally provided with a positive electrode block (8) and the second upper plastic (9) is internally provided with a negative electrode block (10).