US 11,949,122 B2
Bidirectional vent valve, battery, and electrical device
Heyuan Li, Liyang (CN); Fan Zhang, Liyang (CN); and Lei Chen, Liyang (CN)
Assigned to JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED, Liyang (CN)
Filed by JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED, Liyang (CN)
Filed on Jul. 8, 2022, as Appl. No. 17/861,103.
Application 17/861,103 is a continuation of application No. PCT/CN2021/092892, filed on May 10, 2021.
Claims priority of application No. 202110032669.9 (CN), filed on Jan. 12, 2021.
Prior Publication US 2022/0344770 A1, Oct. 27, 2022
Int. Cl. H01M 50/333 (2021.01); F16K 17/18 (2006.01); F16K 27/02 (2006.01); H01M 50/24 (2021.01)
CPC H01M 50/333 (2021.01) [F16K 17/18 (2013.01); F16K 27/0209 (2013.01); H01M 50/24 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A bidirectional vent valve, comprising:
a valve seat, wherein the valve seat is configured to form a gas duct, and the gas duct comprises a first end and a second end;
a bidirectional valve assembly, wherein the bidirectional valve assembly is disposed in the gas duct, the bidirectional valve assembly comprises a first valve plate and a second valve plate, a first through-hole is provided on the first valve plate, a second through-hole is provided on the second valve plate, and a projection of the first through-hole in an axial direction of the gas duct is separated from a projection of the second through-hole in the axial direction of the gas duct, wherein
the first valve plate and the second valve plate are disposed coaxially with the gas duct and,
one of the first through-hole or the second through-hole is disposed coaxially with the gas duct, and the other is disposed along a circumferential direction of the gas duct; and
a first elastic component, wherein a force exertion end of the first elastic component abuts against the first valve plate or the second valve plate so that the first elastic component exerts a force on the first valve plate and/or the second valve plate to make the first valve plate and the second valve plate approach each other to close the gas duct, and, when an air pressure difference between the first end and the second end of the gas duct reaches a first threshold, the first valve plate is configured to move toward the first end to open the gas duct, or, the second valve plate is configured to move toward the second end to open the gas duct; and, wherein
the bidirectional valve assembly further comprises a first sealing element, the first sealing element is disposed on the first valve plate and/or the second valve plate, and, when the bidirectional valve assembly closes the gas duct, the first sealing element is located between the first valve plate and the second valve plate and separates the first through-hole from the second through-hole, wherein a blocking portion is disposed on an inner wall of the gas duct, and, in an axial direction of the gas duct, the first valve plate and the second valve plate are disposed on two sides of the blocking portion respectively, the first valve plate is located on a side that is of the blocking portion and that is close to the first end, and the second valve plate is located on a side that is of the blocking portion and that is close to the second end.