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Structure and method for assembling battery top cover and pole

A technology of assembling structure and top cover, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, electrolyte batteries, etc. The effect of reducing assembly cost, reducing assembly difficulty, and improving overcurrent capability

Pending Publication Date: 2019-12-17
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned scheme prevents the expansion of the battery to a certain extent, but the inventors have found that this scheme still has the following defects at least: first, the structure is complicated and difficult to disassemble and install; The friction welding process is used to connect, which leads to an increase in cost; third, the stability between the pole and the battery cover is poor, and it is prone to failure due to factors such as the environment, resulting in a greater safety risk

Method used

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  • Structure and method for assembling battery top cover and pole
  • Structure and method for assembling battery top cover and pole
  • Structure and method for assembling battery top cover and pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1~6 As shown, an assembly structure of a battery top cover and a pole, including a top cover sheet 3, a first pole 1 and a second pole 2 installed on the top cover sheet 3, the first pole 1 and the top cover sheet 3 The first plastic part 41 is formed by encapsulation between the second pole 2 and the top cover sheet 3, and the second plastic part 42 is formed by encapsulation between the second pole 2 and the top cover sheet 3. The first pole 1 includes a first metal block 11 and at least one A metal block 11 is a first metal nail 12 with a concave-convex fit. The first metal nail 12 is welded to the first metal block 11. The second pole 2 includes a second metal block 21 and at least one second metal block 21 with a concave-convex fit. Two metal nails 22 , the second metal nails 22 are welded to the second metal block 21 . Since the pole is generally composed of a bottom base and a cylinder connected to the bottom base, if the materials of the two are...

Embodiment 2

[0044] The difference from Example 1 is that the resistance of the conductive plastic in this example is 1001Ω~30000Ω. The resistance of the conductive plastic is further limited, so that when the battery fails, the positive pole and the negative pole are connected to form an internal protection circuit, while ensuring the safety performance of the battery.

[0045] Other structures are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0047] Such as Figure 1~6 As shown, an assembly method of a battery top cover and a pole, comprising:

[0048] Insert at least one first metal nail 12 into the first groove 111 at the bottom of the first metal block 11, and then weld along the gap formed between the first groove 111 and the first metal nail 12, so that the first metal nail 12 welded to the first metal block 11 to form the first pole 1;

[0049] Insert at least one second metal nail 22 into the second groove 211 at the bottom of the second metal block 21, and then weld along the gap formed between the second groove 211 and the second metal nail 22, so that the second metal nail 22 welded to the second metal block 21 to form the second pole 2;

[0050] The first pole 1 and the second pole 2 are accommodated in the recess 331 of the pole installation hole 33, and then the first plastic part 41 is glued between the first pole 1 and the top cover sheet 3, and the second The plastic part 42 is glued between the ...

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Abstract

The invention discloses a structure and method for assembling a battery top cover and a pole. The structure comprises a top cover sheet, and a first pole and a second pole which are arranged on the top cover sheet, wherein a first plastic part is formed between the first pole column and the top cover plate in a rubber coating manner, a second plastic part is formed between the second polar columnand the top cover plate in a rubber coating manner, the first pole comprises a first metal block and at least one first metal nail matched with the first metal block in a concave-convex mode, the first metal nail is welded to the first metal block, the second pole comprises a second metal block and at least one second metal nail matched with the second metal block in a concave-convex mode, and thesecond metal nail is welded to the second metal block. The structure is advantaged in that the pole formed by friction welding is omitted, the production cost for assembling the top cover and the pole can be reduced, the overall overcurrent capacity of the pole can be improved, moreover, the stability between the pole and the battery cover plate is improved, so safety performance of a battery cell is improved. In addition, the invention also discloses an assembly method of the battery top cover and the pole.

Description

technical field [0001] The invention belongs to the technical field of battery production and manufacturing, and in particular relates to an assembly structure and an assembly method of a battery top cover and a pole. Background technique [0002] With the development of modern society and the enhancement of people's awareness of environmental protection, more and more devices choose to use lithium batteries as power sources, such as mobile phones, notebook computers, power tools and electric vehicles, etc., which provides a great opportunity for the application and development of lithium batteries wide open space. Among them, lithium batteries used in electric tools and electric vehicles are generally called power batteries. Among them, the structure and manufacturing process of the pole and top cover of the power battery directly affect the performance of the lithium-ion battery cell and even the entire battery. [0003] Among them, the Chinese patent literature disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/058
CPCH01M10/058H01M10/0525Y02E60/10Y02P70/50
Inventor 姜斌邹武元李勇军王程
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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