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公开(公告)号:US20230307624A1
公开(公告)日:2023-09-28
申请号:US18315805
申请日:2023-05-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor: Hanli FU , Zhenhua LI , Jiawei XU , Ziyu YANG , Shuoyan XU , Qiang GUO , Xing LI , Shaojun NIU , Haizu JIN
IPC: H01M4/505 , H01M4/58 , H01M10/0525 , H01M10/054 , H01M4/131
CPC classification number: H01M4/505 , H01M4/5825 , H01M10/0525 , H01M10/054 , H01M4/131
Abstract: A secondary battery includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative electrode active material. The positive electrode plate includes a positive electrode active material. The negative electrode active material is selected from one or more of a silicon-based material and a tin-based material. The positive electrode active material has a molecular formula of M1xMnyM2zOaAb. M1 represents one or two of Mg and Al. M2 represents one or two of Co and Ni. A represents one or more of N, P, and S. 0
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公开(公告)号:US20220320677A1
公开(公告)日:2022-10-06
申请号:US17842622
申请日:2022-06-16
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor: Qiang GUO , Zhenhua LI , Xinzhan WU , Jiawei XU , Qingsong XIE , Haizu JIN
IPC: H01M50/342 , H01M50/375 , H01M50/218 , H01M50/249
Abstract: The embodiments of the application provide a battery cell and a manufacturing method and system therefor, a battery and an electric device. An end cover assembly includes: a battery box including a first wall and a pressure relief mechanism; and a protective member positioned on an outer side of the first wall and including a body portion, a shielding portion and a weak portion. The shielding portion can block emissions released from other battery cells, so as to reduce risk of melt-through of the pressure relief mechanism caused by the emissions. When thermal runaway occurs in the battery cell, the weak portion is broken under the action of a high-temperature and high-pressure substance, such that the high-temperature and high-pressure substance are discharged in time.
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