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Lithium ion battery cover with explosion-proof function

A lithium-ion battery and battery cover technology, which is applied in the direction of battery cover/end cover, secondary battery, battery pack components, etc., can solve the problems of poor explosion-proof consistency, achieve consistency, simple structure, and good explosion-proof effect Effect

Pending Publication Date: 2021-02-05
GUANG DONG VDL NEW ENERGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a lithium-ion battery cover w

Method used

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  • Lithium ion battery cover with explosion-proof function

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[0012]In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0013]Such asfigure 1 withfigure 2As shown, the present invention provides a lithium-ion battery cover with explosion-proof function, including a battery cover plate 1, an explosion-proof membrane 2 arranged on the battery cover plate 1, and an airtight seal is formed between the explosion-proof membrane 2 and the battery cover plate 1. In t...

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Abstract

The invention discloses a lithium ion battery cover with an explosion-proof function, and the cover comprises a battery cover plate and an explosion-proof membrane arranged on the battery cover plate;a closed area is formed between the explosion-proof membrane and the battery cover plate, a sharp object is arranged in the closed area, and the sharp end of the sharp object points to the explosion-proof membrane. The technical problem that an existing battery cover is poor in anti-explosion consistency is solved; when excessive gas is generated in the battery, the explosion-proof membrane bulges outwards to touch the sharp object to be punctured, so the internal gas is released, and the battery is prevented from exploding; by adopting the scheme, the thickness of the explosion-proof membrane can be slightly thicker than that of a conventional explosion-proof membrane, on the one hand, the thickness precision of the thicker explosion-proof membrane is easier to guarantee, and the explosion-proof precision is greatly improved; on the other hand, it is ensured that the explosion-proof membrane cannot be crushed by internal gas before colliding with a sharp object, the consistency of explosion-proof indexes of the lithium ion battery can be kept, and the explosion-proof membrane has the advantages of being simple in structure and good in explosion-proof effect.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to an explosion-proof lithium ion battery cover. Background technique [0002] At present, for lithium-ion batteries, some batteries use battery covers with explosion-proof membranes. Because the thickness of the explosion-proof membranes is relatively thin, it is difficult to maintain the same thickness after processing. If the explosion-proof membrane is too thick, the explosion-proof membrane will not be easy to open and cannot play the role of explosion-proof. Therefore, the existing lithium-ion battery cover has the problem of poor explosion-proof consistency, which cannot meet the needs of the market. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provide a lithium-ion battery cover with an explosion-proof function, which solves the technical problem of poor explosion-proof consist...

Claims

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Application Information

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IPC IPC(8): H01M50/147H01M50/342H01M10/0525
CPCH01M10/0525Y02E60/10
Inventor 张良均
Owner GUANG DONG VDL NEW ENERGY CO LTD
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