Post type lithium battery cover plate

Abstract

The invention discloses a post type lithium battery cover plate which comprises a substrate, wherein the center of the substrate is provided with an explosion-proof hole, and the two sides of the substrate are respectively provided with a post installing hole; one end of a post passes through the installing holes, and the other end of the post is connected to the substrate by virtue of a rivet and an electrode pressing plate; the electrode pressing plate is arranged on the upper joint face of the rivet and the substrate, and the lower joint face of the rivet and the substrate is provided with an electrode extraction slice; and joints of the electrode pressing plate, the electrode extraction slice and the substrate are respectively provided with a sealing gasket. In the process of assembling a battery, a lug is connected with the post firstly, then the post and an electrode core connected with the post are arranged in a battery shell, and then the cover plate is sleeved on the post, and finally, the cover plate is fixedly connected with the battery shell. In the lithium battery cover plate, the length of the electrode extraction slice is not required to be increased, thereby effectively avoiding the occurrence of short-circuiting caused by the contact between the extraction slice and the battery shell; and the lithium battery cover plate has the advantages of simple structure and convenience in use.

Description

technical field [0001] The invention relates to a cover plate of a power lithium battery, in particular to a cover plate of a pole type lithium battery. Background technique [0002] Lithium batteries have the advantages of light weight, high capacity, long life, low self-discharge rate, no memory effect, and no pollution. Especially power lithium batteries are widely used in electric bicycles, electric hardware tools and other equipment. These equipment require batteries to have Large capacity, high power and other conditions, power lithium batteries have certain advantages in this respect, but the cover plate structure of ordinary pole type lithium batteries is relatively complicated, and the cover plate is usually provided with electrode tabs, electrode tabs and battery The contact of the shell is easy to produce a short circuit phenomenon, which brings inconvenience to use. Contents of the invention [0003] The purpose of the present invention is to solve the above p...

AI Technical Summary

Problems solved by technology

[0002] Lithium batteries have the advantages of light weight, high capacity, long life, low self-discharge rate, no memory effect, and no pollution. Especially power lithium batteries are widely used in electric bicycles, electric hardware tools and other equipment. These equipment require batteries to have Large capacity, high power and other conditions, power lithium batteries have certain advantages in this respect, but the cover plate structure of ordinary pole type lithium batteries is relatively complicated, and the cover plate is usually provided with electrode tabs, electrode tabs and battery Shell contact is prone to short circuit phenomenon, which brings inconvenience to use

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