A thermal expansion type anti-overheating automatic cooling safety battery pack

Abstract

The invention discloses a thermal expansion type anti-overheating automatic cooling safety battery pack, which includes a casing, two sets of terminals are symmetrically inserted on the outer wall of the casing, and a cold liquid chamber is opened on the bottom wall of the casing. A plurality of circulation cavities are symmetrically opened in the side wall of the housing, and the plurality of circulation cavities communicate with the cooling liquid chamber, and a plurality of battery cartridges are installed on the inner bottom wall of the housing, each of the battery cartridges Filters are installed at both ends. In the present invention, the power battery is separately placed in the power hole and immersed in liquid for cooling protection, which can prevent the power battery from contacting the air and then use the heat generated by the power battery thermal runaway to realize liquid flow circulation and air circulation cooling, avoiding The battery burns, which increases the safety and reliability of the battery pack and reserves enough time for passengers to escape.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a thermal expansion type anti-overheating automatic cooling safety battery pack. Background technique [0002] As a zero-emission vehicle, new energy vehicles are one of the main models in the world. New energy vehicles use power batteries to provide energy. The safety of power batteries is related to the safety of new energy vehicles. "Safety requirements for power batteries for electric vehicles" There will be no fire or explosion inside, leaving time for the occupants to escape safely. [0003] Existing batteries are protected by thermal management technology. When a lithium battery is short-circuited, it will heat up rapidly, and it will catch fire and burn quickly when it comes into contact with air. The burning speed is fast and it emits toxic substances, which is not conducive to the safety of passengers. Contents of the invention [0004] The purpose of the present i...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that the power battery is easy to burn when in contact with air after short circuit, the burning speed is fast and toxic substances are emitted, and a thermal expansion type anti-overheating automatic cooling safety battery pack is proposed

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