Lithium ion battery tab with gridding structure design, and preparation method thereof

A lithium-ion battery, grid technology, applied in the direction of secondary batteries, structural parts, battery pack parts, etc., can solve the problems of frequent electric vehicle safety accidents, illegal operation by users, and removal of defective batteries, and achieve a simple structure. , The effect of reducing serious accidents and facilitating welding
CN112332037AActive Publication Date: 2021-02-05HEFEI GUOXUAN HIGH TECH POWER ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI GUOXUAN HIGH TECH POWER ENERGY
Publication Date
2021-02-05

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Abstract

The invention provides a lithium ion battery tab with a gridding structure design, and a preparation method thereof. The lithium ion battery tab comprises at least one main tab, the main tab is of a composite layer structure and comprises at least one base film layer and at least one current collector layer, and the current collector layer covers one side surface or two side surfaces of the base film layer; two ends of the current collector layer along a current path are full-coverage areas designed by full coverage of a conductive material, and a gridding area is arranged in the middle of thecurrent collector layer; and a plurality of current collector modules are arranged in the gridding area, and the current collector modules are communicated through gridding bridges, and the current collector modules and the full coverage area are communicated through gridding bridges. When a short circuit occurs in the battery, the internal resistance of the base film layer can be increased alongwith the rise of the temperature, and heat is released, so that the grid bridge in the gridding area of the main tab is heated and fused, the circuit is cut off, and the occurrence of serious accidents is reduced.
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Description

technical field

[0001] The invention relates to the technical field of lithium-ion batteries, in particular to a gridded structure design and a manufacturing method of tabs of lithium-ion batteries. Background technique

[0002] Lithium-ion batteries have the advantages of small size, large capacity, long service life, low self-discharge rate, no memory effect, and environmental protection. They are currently widely used in commercial vehicles, special vehicles, electric bicycles, energy storage systems, and medical equipment. Due to technical limitations, it is difficult to completely remove the problematic batteries in the production process and users have illegal operations during use, resulting in frequent safety accidents of electric vehicles, of which battery short circuits account for a large part, and there is currently no effective means to solve this problem. Contents of the invention

[0003] An object of the present invention is to provide a tab of a lithium-i...

Claims

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