US 12,113,247 B2
Shell for battery cell, battery cell, battery, and power consuming device
Xiaobo Chen, Ningde (CN); and Mingguang Gu, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Mar. 13, 2024, as Appl. No. 18/604,186.
Application 18/604,186 is a continuation of application No. PCT/CN2022/088855, filed on Apr. 24, 2022.
Prior Publication US 2024/0222822 A1, Jul. 4, 2024
Int. Cl. H01M 50/578 (2021.01); H01M 50/581 (2021.01)
CPC H01M 50/578 (2021.01) [H01M 50/581 (2021.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A shell for a battery cell, comprising a pressure relief mechanism, wherein the pressure relief mechanism comprises:
a body;
a first weakened portion arranged on the body, the first weakened portion having two first free ends, and a straight line connecting the two first free ends not completely overlapping with the first weakened portion and jointly defining a pressure relief portion; and
a second weakened portion arranged on the body, a first projection of the first weakened portion on a plane perpendicular to a first direction not intersecting a second projection of the second weakened portion on the plane, the first direction being a thickness direction of the pressure relief portion,
wherein the pressure relief portion is configured to, when an internal pressure or temperature of the battery cell reaches a threshold, open with the first weakened portion as a boundary and flip toward one side where the second weakened portion is located.