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Upper cover assembly of lithium battery

A technology for cover components and lithium batteries, which is applied to battery pack parts, battery cover/end cover, electrical components, etc., can solve problems such as explosion, bulging and cracking of the battery shell, poor safety, etc., and achieve high safety and good explosion-proof Performance, the effect of avoiding explosion

Inactive Publication Date: 2016-07-27
JIANGSU YUHAO NEW ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lithium batteries have the advantages of high voltage, long life, high energy density, and portability, and their application fields are also expanding, but their safety is worse than other secondary batteries. When the power lithium battery is overcharged, its internal electrolyte, etc. The material will be cracked to produce gas, which will cause the battery case to bulge and rupture, allowing oxygen to enter and react with lithium ions accumulated on the surface of the negative electrode, resulting in an explosion

Method used

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the 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.

[0021] Such as Figure 1 to Figure 3 As shown, embodiments of the present invention include:

[0022] A lithium battery top cover assembly, comprising a top cover body 1, a positive pole pole 2, a negative pole pole 3, a positive pole gasket 4, a negative pole gasket 5, an explosion-proof valve 6 and a protective film 7, the positive pole pole 2 and the negative pole The poles 3 are respectively arranged at the left and right ends of the upper cover body 1, and the positive electrode gasket 4 and the negative electr...

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Abstract

The invention discloses an upper cover assembly of a lithium battery. The upper cover assembly comprises an upper cover body, a positive electrode post, a negative electrode post, a positive electrode gasket, a negative electrode gasket, an anti-explosion valve and a protection film, wherein the positive electrode post and the negative electrode post are arranged at the left and right ends of the upper cover body respectively; the positive electrode gasket and the negative electrode gasket are arranged at the bottom of the upper cover body, and are corresponding to the positions of the positive electrode post and the negative electrode post respectively; the anti-explosion valve is arranged on the upper cover body and positioned between the positive electrode post and the negative electrode post; the anti-explosion valve adopts a circular structure; and the protection film is adhered to the upper part of the anti-explosion valve. By adoption of the mode, the upper cover assembly of the lithium battery is simple in structure and provided with the anti-explosion valve, and the protection film is adhered to the upper part of the anti-explosion valve, so that the upper cover assembly has a relatively good anti-explosion performance and high safety; and therefore, an explosion phenomenon when the lithium battery is over-charged can be fully avoided.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a lithium battery upper cover assembly. Background technique [0002] Lithium batteries have the advantages of high voltage, long life, high energy density, and portability, and their application fields are also expanding, but their safety is worse than other secondary batteries. When the power lithium battery is overcharged, its internal electrolyte, etc. The material will be cracked to produce gas, which will cause the battery shell to bulge and rupture, allowing oxygen to enter and react with the lithium ions accumulated on the surface of the negative electrode, and then explode. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a lithium battery upper cover assembly, which has a simple structure and is equipped with an explosion-proof valve. Explosion phenomenon when the battery is overcharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12H01M10/0525H01M50/147H01M50/30H01M50/342
CPCH01M10/0525H01M50/147H01M50/342H01M50/30Y02E60/10
Inventor 潘宇锋
Owner JIANGSU YUHAO NEW ENERGY TECH
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