Negative electrode plate, secondary battery, battery module, battery pack, and apparatus
US11258060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an apparatus. The negative electrode plate includes a negative current collector and a plurality of active substance layers formed on the negative current collector, where the plurality of active substance layers include at least a first active substance layer and a second active substance layer; the first active substance layer includes a first negative active substance, and the second active substance layer includes a second negative active substance; a ratio of thickness of the negative active substance of the first active substance layer to average particle size of the first negative active substance is 2.0 to 4.0; and a ratio of thickness of the second active substance layer to average particle size of the second negative active substance is 2.2 to 5.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.