Lithium ion battery with top cover easy to replace

Abstract

The lithium ion battery comprises a shell, an opening is formed in the top of the shell, a containing groove used for containing electrolyte solution is formed in the bottom of the shell, a rolling groove is formed in the position, close to the opening, of the top of the shell, and a cover cap used for sealing the rolling groove is arranged at the top of the rolling groove. The cover cap comprises an outer cover fixedly arranged on the top, and the center of the outer cover is detachably connected with the top cover. The utility model aims to provide a lithium ion battery which is easier to realize timely lossless replacement of a top cover.

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