COMPOSITE EXPLOSION-PROOF VALVE, COVER PLATE ASSEMBLY, AND BATTERY
First Claim
1. An explosion-proof valve, comprising at least two layers of explosion-proof membranes and a flame-retardant structure located between the at least two layers of explosion-proof membranes.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure provides a composite explosion-proof valve mounted on a battery cover plate assembly, a cover plate assembly containing the explosion-proof valve, and a battery. The composite explosion-proof valve includes at least two layers of explosion-proof membranes and a flame-retardant structure located between the at least two layers of explosion-proof membranes. When the battery (such as internal temperature or internal pressure) is abnormal, the first layer of explosion-proof membrane is opened. Under the action of the flame-retardant structure, the composite explosion-proof valve is in a local oxygen-deficient state, and it is difficult for a high-temperature combustible matter ejected from the battery to ignite under the local oxygen-deficient condition. Therefore, the composite explosion-proof valve is capable of reliving pressure in time when the battery is abnormal and effectively preventing external oxygen from entering, thereby preventing occurrence of battery combustion and explosion and avoiding secondary disasters and larger abnormity.
1 Citation
37 Claims
- 1. An explosion-proof valve, comprising at least two layers of explosion-proof membranes and a flame-retardant structure located between the at least two layers of explosion-proof membranes.
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4-5. -5. (canceled)
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Specification