Nonaqueous electrolyte secondary battery
US11509021B2 · kind B2 · utility
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Key dates
| Filing date | Jul 27, 2018 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, wherein the separator includes an inorganic filler layer which includes a first filler layer containing phosphate salt particles and a second filler layer disposed on the first filler layer and containing inorganic particles more heat resistant than the phosphate salt particles, and the BET specific surface area of the phosphate salt particles is in the range of not less than 5 m2/g and not more than 100 m2/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.