Battery pack explosion-proof valve structure, battery pack structure and automobile

Abstract

The invention provides a battery pack explosion-proof valve structure, a battery pack structure and an automobile. The battery pack explosion-proof valve structure comprises: an explosion-proof valve body, wherein the explosion-proof valve body comprises a separation blade which is matched with an exhausting hole n a battery pack box body and a connecting rod which is vertical to the separation blade and is arranged toward the inside of the battery pack box body; a limiting structure arranged on the surface of the separation blade, wherein the limiting structure comprises a connecting sheet and a plurality of limiting supporting legs formed by extending and bending an edge of the connecting sheet, the connecting sheet is arranged on the connecting rod in a penetrating manner and is fitted and connected with the separation blade, and one end of each limiting supporting leg abuts against an edge of the exhausting hole when the explosion-proof valve body moves along the axial direction of the connecting rod; an elastic cover, wherein the top of the elastic cover is fixedly connected with the connecting rod and the bottom of the elastic cover is fixed on the battery pack box body. When the elastic cover is at a free state, the separation blade covers the exhausting hole; when pressure in the battery pack box body is greater than pressure outside the battery pack box body, the elastic cover has elastic deformation; the separation blade gets far away from the exhausting hole along the axial direction of the connecting rod under the action of air pressure and an elastic force of the elastic cover.

Description

technical field [0001] The invention relates to the technical field of battery design, in particular to a battery pack explosion-proof valve structure, a battery pack structure and an automobile. Background technique [0002] With the rapid development of electric vehicles, battery packs, as the core key components of electric vehicles, have higher and higher safety requirements. In extreme cases, when the internal short circuit of the battery pack or thermal runaway of the cells occurs, the internal temperature and pressure of the battery pack will rise rapidly. At this time, it is difficult to quickly exhaust the battery pack, which will cause the battery pack to explode due to excessive expansion. Contents of the invention [0003] The object of the present invention is to provide a battery pack explosion-proof valve structure, a battery pack structure and a car, which are used to solve the problem of possible explosion when the internal temperature and pressure of the ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a battery pack explosion-proof valve structure, a battery pack structure and a car, which are used to solve the problem of possible explosion when the internal temperature and pressure of the battery pack rise rapidly

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