Positive electrode plate, secondary battery, battery module, battery pack, and electrical device
US12062783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2023 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Jun 8, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive electrode plate includes a positive current collector, and a positive active material layer disposed on at least one surface of the positive current collector. The positive active material layer includes a first active material layer and a second active material layer that are sequentially stacked in a direction away from the surface. The first active material layer includes a first composite particle. The first composite particle includes a first lithium iron phosphate particle and a first carbon layer that coats a surface of the first lithium iron phosphate particle. The second active material layer includes a second composite particle. The second composite particle includes a second lithium iron phosphate particle and a second carbon layer that coats a surface of the second lithium iron phosphate particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.