CN215644689U

CN215644689U - Horizontal laminated battery cover plate and lithium battery thereof

Info

Publication number: CN215644689U
Application number: CN202120562499.0U
Authority: CN
Inventors: 陈文炬; 汪正兵; 白科; 黄浩; 游杰; 陈富源
Original assignee: Jiangxi ANC New Energy Technology Co Ltd
Current assignee: Jiangxi ANC New Energy Technology Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-01-25
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to the field of new energy lithium battery manufacturing, in particular to a horizontal laminated battery cover plate and a lithium battery thereof. The horizontal laminated battery comprises a positive cover plate, an aluminum shell, a battery cell and a negative cover plate. Wherein the aluminum hull is both ends hollow structure, and anodal apron welds at the both ends of aluminum hull with the negative pole apron, and utmost point post increases the phenomenon emergence that the rivet structure can avoid the lithium cell to take place the short circuit when filling soon on the apron on the phenomenon take place. The positive pole and the negative pole are arranged at two ends of the battery, so that the flow area of the battery is increased, and the capacity of the battery is improved. The safety valve adopts sealed nail welding for the steel sheet, and steel sheet preparation technology is simpler, and the apron main part adopts the stair structure, can the full weld side position, effectively improves the security performance of battery, has guaranteed welded efficiency, avoids appearing the rosin joint phenomenon.

Description

Horizontal laminated battery cover plate and lithium battery thereof

Technical Field

The utility model relates to the field of new energy lithium battery manufacturing, in particular to a horizontal laminated battery cover plate and a lithium battery thereof.

Background

The power battery is the development direction of new energy automobiles and energy storage power stations, so the safety of the battery is of great importance. The battery cover plate is used as an important component of the power battery and determines the sealing performance and the insulating performance of the power battery. The lithium battery cover plate of present volume production avoids the material extravagant, and the battery cover plate size is the same with the aluminum hull, can cause the welding mouth rosin joint of battery cover plate and aluminum hull to be more when the welding, and also can appear the phenomenon of deep-fry welding. All must set up utmost point post device for the battery apron, among the prior art, because utmost point post, connection piece and apron are connected firmly inadequately, when the battery fills soon or overcharges, very easily appear the battery short circuit, catch fire, the phenomenon of explosion when serious, in the manufacturing and the use of battery, it is not comprehensive enough to the security performance protection of battery. And the positive and negative poles of the lithium battery cover plate are arranged on the same side, so that the capacity is difficult to be fully exerted when the electric core passes through the current, the first effect of the battery is easy to be lower, and the capacity is lower than the set capacity, thereby causing a large amount of defective products.

SUMMERY OF THE UTILITY MODEL

In light of the problems noted in the background, the present invention provides a horizontal laminated battery cover plate and associated battery structure, which will be further described below.

Horizontal lamination battery apron, its characterized in that: the rivet fixing device comprises a rivet 1, a pole 2, an insulating pad 3, a cover plate main body 4, a switching sheet 5 and a rivet fixing block 6, wherein the rivet 1 is connected with the pole 2, the pole 2 is connected with the insulating pad 3, the insulating pad 3 is connected with the cover plate main body 4, two ends of the cover plate main body 4 are of stepped structures, a safety valve 7 or a liquid injection hole 8 is arranged on the cover plate main body 4, the other surface of the cover plate main body 4 is connected with the switching sheet 5, and the rivet 1, the pole 2, the insulating pad 3, the cover plate main body 4 and the switching sheet 5 are fixed in sequence by the rivet fixing block 6;

the cover plate main body 4 is an anode cover plate 9 or a cathode cover plate 10, the safety valve 7 is arranged on the cathode cover plate 10, and the liquid injection hole 8 is arranged on the anode cover plate 9.

Furthermore, two ends of the cover plate main body 4 are of a step structure, and the length of the protruding part 13 is 1-2 mm;

further, the liquid injection hole 8 is internally provided with threads, and is sealed by a screw with threads after liquid injection is finished;

further, the safety valve 7 is made of a steel sheet material, the thickness of the safety valve is 0.3-1mm, and the safety valve is welded by adopting a sealing nail;

the utility model provides a lithium battery, includes horizontal lamination battery apron, still includes aluminum hull 11 and electric core 12, and aluminum hull 11 is both ends hollow structure, and anodal apron 9, negative pole apron 10 weld in the both ends of aluminum hull 11.

Has the advantages that: compared with the prior art, the utility model can improve the firmness of the post, the cover plate and the connecting sheet by additionally arranging the rivet on the cover plate post. The positive and negative electrode cover plates are arranged at the two ends of the battery, so that the positive and negative electrode posts can increase the current flowing area at the two ends of the battery, and the capacity exertion of the battery is improved. The apron main part adopts the stair structure, can carry out the full weld side position with the aluminum hull, has guaranteed welded efficiency, has avoided the problem of rosin joint to exist. The steel sheet is selected as the safety valve and welded by the sealing nails, and compared with the existing lithium battery safety valve, the steel sheet is simpler to process, so that the safety performance of the battery can be more effectively protected while the manufacturing process of the battery cover plate is simplified.

Drawings

FIG. 1: the utility model discloses a structural schematic diagram of a horizontal laminated battery cover plate;

FIG. 2: the horizontal laminated battery cover plate is a top view of the positive electrode cover plate;

FIG. 3: the horizontal laminated battery cover plate is a top view of the negative electrode cover plate;

FIG. 4: the utility model discloses a structural schematic diagram of a horizontal laminated battery.

In the figure: rivet 1, utmost point post 2, insulating pad 3, apron main part 4, switching piece 5, rivet fixed block 6, relief valve 7, notes liquid hole 8, anodal apron 9, negative pole apron 10, aluminum hull 11, electric core 12, salient position 13.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and all of the technical features or connections of the present invention that are not described in detail are prior art.

Horizontal laminated battery cover plate: the positive cover plate and the negative cover plate have the same structure; the rivet, the polar column, the insulating pad, the cover plate main body, the adapter sheet and the rivet fixing block are sequentially fixed by the rivet fixing block;

the cover plate main body is an anode cover plate or a cathode cover plate, the safety valve is arranged on the cathode cover plate, and the liquid injection hole is formed in the liquid injection hole.

Wherein, the two ends of the cover plate main body are of step structures, and the length of the protruding part is 1-2 mm;

wherein, the liquid injection hole is internally provided with threads and is locked by a screw after the liquid injection is finished;

wherein the safety valve is made of steel sheet material, the thickness of the safety valve is 0.3-1mm, and the safety valve is welded by adopting a sealing nail;

lithium battery: and (3) putting the pole piece (theoretical value is 60Ah) of the laminated lithium battery into an aluminum shell, and respectively welding the positive cover plate and the negative cover plate at two ends of the aluminum shell to obtain the finished lithium battery.

The 50 lithium batteries assembled by adopting the process have no welding failure, and the welding efficiency is ensured and the problem of insufficient welding is avoided at the full-welding side position in the manufacturing process of the lithium batteries. In the aspect of first-effect exertion, the first-effect mean value of the embodiment is 60.09, the capacity exertion is good, the overcurrent area of the positive and negative poles at two ends of the battery, which can increase the current, can be obtained, and the capacity exertion of the battery is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a horizontal lamination battery apron which characterized in that: the rivet fixing device comprises a rivet (1), a pole (2), an insulating pad (3), a cover plate main body (4), a switching sheet (5) and a rivet fixing block (6), wherein the rivet (1) is connected with the pole (2), the pole (2) is connected with the insulating pad (3), the insulating pad (3) is connected with the cover plate main body (4), two ends of the cover plate main body (4) are of a step structure, a safety valve (7) or a liquid injection hole (8) is arranged on the cover plate main body (4), the other surface of the cover plate main body (4) is connected with the switching sheet (5), and the rivet fixing block (6) fixes the rivet (1), the pole (2), the insulating pad (3), the cover plate main body (4) and the switching sheet (5) in sequence;

the cover plate main body (4) is an anode cover plate (9) or a cathode cover plate (10), the safety valve (7) is arranged on the cathode cover plate (10), and the liquid injection hole (8) is arranged on the anode cover plate (9).

2. The horizontal laminated battery cover plate of claim 1, wherein: the two ends of the cover plate main body (4) are of step structures, and the length of a protruding part (13) of the cover plate main body is 1-2 mm.

3. The horizontal laminated battery cover plate of claim 1, wherein: and threads are arranged in the liquid injection hole (8), and the liquid injection hole is sealed by a threaded screw after liquid injection is finished.

4. The horizontal laminated battery cover plate of claim 1, wherein: the safety valve (7) is made of a steel sheet material, is 0.3-1mm thick and is welded by sealing nails.

5. A lithium battery, characterized in that: the horizontal laminated battery cover plate comprising any one of claims 1-4, further comprising: the battery comprises an aluminum shell (11) and a battery cell (12), wherein the aluminum shell (11) is of a hollow structure with two ends, and a positive cover plate (9) and a negative cover plate (10) are welded at two ends of the aluminum shell (11).