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Anti-short circuit method of lithium ion battery

A lithium-ion battery, anti-short circuit technology, applied in the direction of circuits, secondary batteries, battery pack components, etc., can solve problems such as short circuit, fire, battery easy to overlap, etc., to achieve easy operation and control, easy operation, and convenient photography recognition effect

Inactive Publication Date: 2019-07-30
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing battery tabs are easy to overlap, cause short circuit, and cause fire, and provide a method for preventing short circuit of lithium ion battery

Method used

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  • Anti-short circuit method of lithium ion battery
  • Anti-short circuit method of lithium ion battery
  • Anti-short circuit method of lithium ion battery

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specific Embodiment approach 1

[0026] Specific Embodiment 1: This embodiment describes a short-circuit prevention method for lithium-ion batteries. The method is to cover the surface of the exposed tabs of the lithium-ion battery with insulating materials. During the production process, even if two tabs are overlapped Together, they will not be turned on to cause a short circuit of the battery, and the size and thickness of the insulating material are controlled within the process range.

specific Embodiment approach 2

[0027] Specific embodiment two: a kind of lithium-ion battery anti-short-circuit method described in specific embodiment one, described insulating material is Teflon, alumina ceramics, ceramic polymer or polytetrafluoroethylene, needs to have wear-resisting, resistant Basic properties such as high temperature, insulation, corrosion resistance, and easy operation should also have obvious color difference from the surface of tabs and batteries.

specific Embodiment approach 3

[0028] Specific embodiment three: a lithium-ion battery anti-short circuit method described in specific embodiment 1 or 2, the thickness of the insulating material is 10-20um, too thin will affect the wear resistance of the coating, and too thick will waste materials, At the same time, it will also increase the weight of the battery tab, causing the tab to bend.

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Abstract

The invention discloses an anti-short circuit method of a lithium ion battery, and belongs to the technical field of lithium battery manufacturing. The method is characterized in that an insulating material covers the surface of a tab exposed outside the lithium ion battery. The insulating material is teflon, alumina ceramic, ceramic polymer or polytetrafluoroethylene. The thickness of the insulating material is 10-20 microns. The insulating material covers the surface of the tab in a spraying or pasting manner, and the process is completed before the battery is charged. The coverage range ofthe insulating material cannot exceed a tab cutting area. The insulating material used in the method has the advantages of wear resistance, high temperature resistance, corrosion resistance, insulation and easy operation: in a production process, the battery needs to be transported from one process to another process; a coating on the tab is rubbed continuously; the coating is likely to disappearif the material is not wear-resistant, and finally the purpose of insulating in the production process cannot be achieved; and the selected insulating material has relatively good wear resistance andcan ensure that the coating can play a role in the whole production process of the battery.

Description

technical field [0001] The invention belongs to the technical field of lithium battery manufacturing, and in particular relates to a method for preventing short circuit of a lithium ion battery. Background technique [0002] Lithium batteries have the advantages of high energy, high battery voltage, wide operating temperature range, long storage life and small size, and have been widely used in military and civilian small electrical appliances. When the distance between the tabs of a lithium-ion battery is less than 10mm, the positive and negative tabs are very easy to overlap and cause a short circuit, which poses a serious safety hazard. At present, battery manufacturers generally use an insulating sleeve for the lug cover. This method has at least the following problems: the sleeve is easy to fall off; the process is complicated, and it is difficult to realize automatic production; the process of charging and discharging or testing using the tab must be removed first. Ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M10/058H01M10/0525H01M50/531
CPCH01M10/058H01M10/0525H01M50/531Y02E60/10Y02P70/50
Inventor 何伊周仕昌朱永康曾玉祥徐延铭
Owner ZHUHAI COSMX BATTERY CO LTD
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