Production method of anti-explosion valve sheet, lithium ion battery and anti-explosion cover plate of lithium ion battery

A lithium-ion battery, production method technology, applied in secondary batteries, battery pack parts, circuits, etc., can solve the problems of affecting sealing, high adhesive curing conditions, low production efficiency, etc., and achieve good air tightness and The effect of explosion-proof, simple and easy production process, good safety and reliability

Inactive Publication Date: 2012-08-15
SHENZHEN B&K TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of implementing the present invention, the inventor found that the existing explosion-proof cover plate has the following disadvantages: (1) The curing condition of the adhesive for bonding the main cover plate and the explosion-proof valve plate is relatively high, and the adhesive is in the organic After soaking in the electrolyte for a period of time, the adhesiveness will decrease, which will cause the edge of the explosion-proof valve plate to separat

Method used

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  • Production method of anti-explosion valve sheet, lithium ion battery and anti-explosion cover plate of lithium ion battery
  • Production method of anti-explosion valve sheet, lithium ion battery and anti-explosion cover plate of lithium ion battery
  • Production method of anti-explosion valve sheet, lithium ion battery and anti-explosion cover plate of lithium ion battery

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[0011] The production method of the lithium-ion battery explosion-proof valve plate, the lithium-ion battery and its explosion-proof cover plate of the present invention will be described with reference to the accompanying drawings.

[0012] The production method of the lithium-ion battery explosion-proof valve plate of the present invention comprises: performing forging processing on the reserved area on the main cover plate 1 of the explosion-proof cover plate, so that the reserved area forms an airtight film integrally connected with the main cover plate 1 The explosion-proof valve sheet 2 is composed of a film sheet.

[0013] In specific implementation, such as figure 1 Shown is a flowchart of a method for producing an explosion-proof valve plate in a preferred embodiment of the present invention. This production method comprises the steps:

[0014] S1: before forging the main cover 1 , pre-open a reserved hole in the reserved area of ​​the main cover 1 .

[0015] Speci...

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Abstract

The embodiment of the invention discloses a production method of an anti-explosion valve sheet of a lithium ion battery. The anti-explosion valve sheet which is integrally connected with a main cover plate is machined by repeated forging and pressing or hot melting treatment after forging. Compared with the conventional anti-explosion cover plate which is formed by adhering or welding the main cover plate and the anti-explosion valve sheet, the anti-explosion valve sheet produced by using the production method provided by the invention has the advantages of better gas tightness and anti-explosion property, higher production efficiency and lower production cost. The lithium ion battery with the anti-explosion valve sheet is safer and more reliable.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a production method for an explosion-proof valve plate of a lithium-ion battery, a lithium-ion battery and an explosion-proof cover plate thereof. Background technique [0002] Lithium-ion battery is a new type of chemical power source. It has the characteristics of small size, light weight, strong power, no memory, and environmental protection. It is widely used in wireless electronic devices such as mobile phones, cameras, video cameras, and PDAs. [0003] However, when the lithium-ion battery is used improperly, such as overcharge, short circuit, overheating, etc., gas will be generated inside the battery, causing the internal pressure of the battery to increase, and there is a possibility of explosion. In order to solve this technical problem, in addition to adding protective circuits to existing lithium-ion batteries, explosion-proof covers are often added to the batteri...

Claims

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Application Information

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IPC IPC(8): H01M2/12H01M2/04H01M10/0525
CPCY02E60/10
Inventor 高建新
Owner SHENZHEN B&K TECH
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