Invention Grant
- Patent Title: Secondary battery, method for manufacturing the same, and apparatus containing the same
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Application No.: US17513937Application Date: 2021-10-29
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Publication No.: US11322739B2Publication Date: 2022-05-03
- Inventor: Jianjun Ma , Rui Shen , Libing He
- Applicant: Contemporary Amperex Technology Co., Limited
- Applicant Address: CN Ningde
- Assignee: Contemporary Amperex Technology Co., Limited
- Current Assignee: Contemporary Amperex Technology Co., Limited
- Current Assignee Address: CN Ningde
- Agency: Law Offices of Liaoteng Wang
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/36 ; H01M4/1315 ; H01M4/587 ; H01M10/052 ; H01M4/04 ; H01M4/525 ; H01M4/02

Abstract:
The present application relates to a secondary battery, a method for manufacturing the same and an apparatus containing the same. Specifically, in the secondary battery, the first negative electrode film comprises a first negative electrode active material, the second negative electrode film comprises a second negative electrode active material. The first negative electrode active material comprises natural graphite and satisfies: 12%≤A≤18%; the second negative electrode active material comprises artificial graphite and satisfies: 20%≤B≤30%; A is a resilience rate of the first negative electrode active material measured under an action force of 15,000 N, and B is a resilience rate of the second negative electrode active material measured under an action force of 15,000 N. The secondary battery of the present application can have better kinetic performance and better high-temperature storage performance while maintaining higher energy density.
Public/Granted literature
- US2156204A Dipping machine Public/Granted day:1939-04-25
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