Secondary battery, method for manufacturing the same, and apparatus containing the same
US11322739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.