Patent ID: 11949119
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A cover assembly of a secondary battery, comprising:
a cover plate comprising a gas vent;
a pressing block provided with a center hole opposite to the gas vent;
a gas exhaust valve configured to seal the gas vent and create a thermal deformation in response to an increase in temperature to get out of a state of sealing the gas vent; and
a protective part at least partially covering the gas vent and having a gas permeability coefficient smaller than a gas permeability coefficient of the gas exhaust valve,
wherein a first protrusion is provided on a surface of the cover plate facing the gas exhaust valve, and the first protrusion presses against the gas exhaust valve; and the first protrusion is located at a side of a connection portion of the protective part close to the gas vent, and
wherein a second protrusion is provided on a surface of the pressing block facing the gas exhaust valve, and the second protrusion presses against the gas exhaust valve; and the second protrusion is located at a side of the connection portion facing away from the gas vent.