Polar column and battery cell with same

Abstract

The invention provides a polar column and a battery cell with the same. The polar column comprises a first column body, a second column body and a sliding part, wherein the first column body comprises a bottom plate and an annular boss arranged on the bottom plate, the annular boss is provided with a containing cavity, and the bottom plate is located at the first end of the containing cavity; the second column body covers the second end of the containing cavity; the sliding part is movably arranged in the containing cavity, the sliding part divides the containing cavity into a first cavity body and a second cavity body which are independent from each other, and the second cavity body is located between the first cavity body and the bottom plate; the bottom plate is provided with a first through hole, the first through hole is communicated with the second cavity, the annular boss is provided with a second through hole, and the second through hole is communicated with the containing cavity. According to the technical scheme provided by the invention, the problems of poor safety and short service life of the battery cell in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to the field of power batteries, in particular, to a pole and a battery cell having the same. Background technique [0002] In the field of power batteries, how to ensure the safety and reliability of batteries during use is the top priority for battery manufacturers. In practical applications, when the battery cell is used improperly or under harsh conditions (such as high temperature environment or overcharge and discharge), affected by its own chemical system, a large amount of gas will be generated inside the battery cell, causing the air pressure to rise sharply, and the battery cell will explode. . [0003] The commonly used solution at present is to add an explosion-proof valve structure to the top cover of the cell, so that when the internal air pressure of the cell reaches a certain value, the explosion-proof valve will be opened to achieve the purpose of pressure relief. However, this method is destructive protection, ...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a pole and a cell with it, so

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