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Cover plate used for battery metal shell and metal outer shell

A metal casing and cover plate technology, which is applied in the direction of battery cover/end cover, battery box/coat, battery pack parts, etc., can solve the problems of scrapped pass-through rate, so as to prevent electrolyte leakage, reduce potential safety hazards, and avoid The effect of battery life

Pending Publication Date: 2018-05-01
桑德新能源技术开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of low pass-through rate caused by welding defects and direct scrapping when welding the liquid injection hole of the cover plate in the prior art

Method used

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  • Cover plate used for battery metal shell and metal outer shell
  • Cover plate used for battery metal shell and metal outer shell

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as figure 1 As shown, the embodiment of the present invention provides a cover plate for a battery metal case, including a cover plate body 1, and a liquid injection hole penetrating along the thickness direction of the cover plate body 1 is provided on the cover plate body 1; wherein, The liquid injection hole includes a liquid ...

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Abstract

The invention relates to the technical field of lithium-ion batteries, and particularly to a cover plate used for a battery metal outer shell and the metal shell. The cover plate comprises a cover plate body; injection hole which penetrates along the thickness direction of the cover plate body is formed in the cover plate body; the injection hole comprises an injection part and a sealing part; when the cover plate is arranged at the shell of the metal outer shell, the injection part faces the shell and the sealing part departs from the shell; the sealing part takes on a stair-shaped structure;the stair-shaped structure comprises at least two step surfaces; the aperture corresponding to each step surface increases gradually from the injection part to the surface of the cover plate body; atleast two sealing parts which separately arranged in matching with the step surfaces, are provided and are used for sealing the sealing part. Discarding of the battery caused by one-time sealing failure is avoided, the first pass yield of production is increased, electrolyte leakage caused by poor sealing is completely eradicated, and safety hazard in the whole lithium-ion battery production process is reduced.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a cover plate and a metal case for a battery metal case. Background technique [0002] With the rapid development of the new energy automobile industry, the lithium-ion battery production process, which is the core component of the new energy automobile industry, has also been mentioned in a crucial position. The direct rate of the lithium-ion battery production process affects the cost of lithium-ion batteries. Consistency plays a vital role. Therefore, in the production process, maximizing the throughput rate of the production process has become the core issue of the manufacturing lithium-ion battery production base. [0003] The existing production process is to directly cover the welding aluminum sheet on the liquid injection hole, and seal and weld the aluminum sheet and the liquid injection hole on the cover plate of the square aluminum case lithium-ion batter...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/08H01M2/36H01M50/147H01M50/183H01M50/636
CPCH01M50/147H01M50/183H01M50/636H01M50/60Y02E60/10
Inventor 王志忠娄忠良
Owner 桑德新能源技术开发有限公司
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