Secondary battery, battery module, battery pack, and electrical apparatus
US12199276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2024 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jun 7, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a secondary battery, a battery module, a battery pack, and an electrical apparatus. The secondary battery comprises a positive electrode plate and a non-aqueous electrolyte solution, where the positive electrode plate comprises a positive electrode active material having a core-shell structure and comprising an inner core and a shell cladding the inner core, where the inner core has a chemical formula of Li1+xMn1−yAyP1−zRzO4, a first cladding layer comprises crystalline pyrophosphates LiaMP2O7 and/or Mb(P2O7)c, a second cladding layer comprises a crystalline phosphate XPO4, and a third cladding layer is carbon; and the non-aqueous electrolyte solution comprises a first additive comprising one or more compounds in the group consisting of a compound represented by formula 1, a compound represented by formula 2, and a compound represented by formula 3, thereby improving rate performance, cycling performance, and high-temperature stability of a lithium manganese phosphate secondary battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.