Breathable pressure release valve applied to power battery pack

A power battery pack and vent valve technology, applied in electrical components, battery pack components, circuits, etc., can solve the problems of poor consistency of blasting pressure, affecting sealing reliability, and small pressure relief diameter, achieving good versatility, The effect of reducing air convection and low pressure relief opening pressure
CN109904367AActive Publication Date: 2019-06-18JIANGLING MOTORS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGLING MOTORS
Publication Date
2019-06-18

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Abstract

The invention relates to the field of new energy automobiles, in particular to a breathable pressure release valve applied to a power battery pack. The breathable pressure release valve comprises a breathable valve protective cover, a breathable film and a breathable valve base; the breathable film is arranged between the breathable valve protective cover and the breathable valve base in a sleeving mode; a cavity structure with an opening is formed in the lower portion of a breathable valve protective cover main body; the inner edge of the cavity of the breathable valve protective cover is provided with a clamping structure used for clamping the breathable valve base; the outer edge of the breathable valve base is attached to the inner wall of the breathable valve protective cover; and a plurality of through vent holes are formed in the side walls of the breathable valve protective cover between the breathable valve protective cover and the breathable valve base in a point spacing mode. The breathable pressure release valve is convenient and rapid to mount; the breathable pressure release valve is mounted in a battery box shell with an opening position; the mounting can be completed by mounting a fastening piece in a box body; and the mounting process is short in time.
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Description

Technical field

[0001] The invention relates to the field of new energy vehicles, in particular to a ventilating pressure relief valve applied to a power battery pack. Background technique

[0002] The power battery pack installed on the bottom of the vehicle needs to reach the IP67 protection level. Due to the heating of the battery cell during the charging and discharging process and the change of the external environment of the vehicle, it is necessary to realize the gas breathing inside and outside the box to ensure the pressure balance inside and outside the box. So as to ensure the reliability of the sealing structure; in addition, the battery pack must be able to achieve rapid exhaust and pressure relief under extreme conditions such as thermal runaway of the battery cell.

[0003] Currently, spring blasting type venting pressure relief valves or thimble blasting type venting pressure relief valves are mostly used on battery packs. The blasting pressure of thimble blasting v...

Claims

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