US 12,297,918 B2
Bidirectional pressure relief valve, battery and electric device
Fan Zhang, Ningde (CN); Lei Chen, Ningde (CN); Heyuan Li, Ningde (CN); and Langchao Hu, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Apr. 14, 2023, as Appl. No. 18/134,978.
Application 18/134,978 is a continuation of application No. 17/854,687, filed on Jun. 30, 2022, granted, now 11,662,036.
Application 17/854,687 is a continuation of application No. PCT/CN2021/093427, filed on May 12, 2021.
Claims priority of application No. 202010898974.1 (CN), filed on Aug. 31, 2020.
Prior Publication US 2023/0250885 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 17/196 (2006.01); H01M 50/204 (2021.01); H01M 50/325 (2021.01)
CPC F16K 17/196 (2013.01) [H01M 50/204 (2021.01); H01M 50/325 (2021.01); H01M 2200/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A bidirectional pressure relief valve, comprising:
a valve seat having a first end and a second end opposite each other, a channel and a partition plate, the channel penetrating the first end and the second end, a first pressure relief hole being provided on the partition plate, and the partition plate being arranged on an inner wall of the channel, and dividing the channel into a first cavity and a second cavity in an axial direction of the channel;
a first valve structure, at least part of the first valve structure being located inside the first cavity and being configured to open or close the first pressure relief hole so as to cause the first cavity to be in communication with or be isolated from the second cavity; and
a second valve structure, at least part of the second valve structure being located inside the second cavity and being configured to open or close a second pressure relief hole so as to cause the first cavity to be in communication with or be isolated from the second cavity,
wherein the first valve structure comprises a first elastic structure and a first valve body, the first elastic structure abutting against the first valve body, the first valve body comprises a first valve plate and a first sealing gasket, at least part of the first valve plate being located between the first elastic structure and the first sealing gasket, and the first valve body being configured to open or close the first pressure relief hole by means of the first sealing gasket,
a rigidity of the first valve plate is greater than that of the first sealing gasket, and
a surface of the first valve plate away from the first elastic structure has a first groove, at least part of the first sealing gasket being accommodated in the first groove.