Secondary explosion-proof battery steel shell

Abstract

A secondary explosion-proof battery steel shell disclosed by the present invention comprises an outer shell and a roll core, C-shaped plates are fixedly connected to the periphery of the interior of the outer shell, and first sliding grooves are formed in the top and the bottom of each C-shaped plate; buffer plates are slidably connected to the first sliding grooves, and a plurality of first springs are fixedly connected between the outer shell and the buffer plates; a plurality of conical holes are formed in the outer shell, and sealing balls tangent to the conical holes are arranged in the conical holes. In the invention, under the action of the first springs and the buffer plates, the impact force of airflow generated during explosion to the outer shell is buffered; meanwhile, the plurality of through holes are formed in the buffer plates, and one stream of airflow is dispersed into a plurality of streams of direct-current airflow, so that the impact force of the airflow to the outer shell is further reduced; and then the airflow applies the impact force to the sealing balls through the small ends of the conical holes, the sealing balls are pushed to open the conical holes, and the air pressure generated by explosion in the outer shell is rapidly relieved, so that the secondary explosion-proof effect is achieved, and the situation of chain explosion is avoided.

Description

technical field [0001] The invention relates to the technical field of battery steel casings, in particular to a secondary explosion-proof battery steel casing. Background technique [0002] A battery refers to a cup, tank, or other container or part of a composite container that contains an electrolyte solution and a metal electrode to generate current. It is a device that can convert chemical energy into electrical energy. It has a positive pole and a negative pole. [0003] At present, most of the cylindrical power battery shells on the market are made of steel. Due to unstable performance or improper use, the battery cells will heat up. Once the explosion is powerful, it will cause a chain reaction. In the improved technical solution, the battery positive electrode is equipped with The explosion-proof cap has a certain explosion-proof effect. However, for the situation where the internal pressure of the battery increases sharply, the explosion-proof cap releases the pres...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the cylindrical power battery shells on the market are made of steel. Due to unstable performance or improper use, the battery cells will heat up. Once the explosion is powerful, it will cause a chain reaction. In the improved technical solution, the battery positive electrode is equipped with The explosion-proof cap has a certain explosion-proof effect. However, for the situation where the internal pressure of the battery increases sharply, the explosion-proof cap releases the pressure slowly, and the steel shell of the battery will still explode, and the above-mentioned explosion rupture may occur in the cylindrical The side of the battery steel case, thus causing a chain explosion, therefore, the present invention proposes a secondary explosion-proof battery steel case

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