Separator, secondary battery containing such separator, and related battery module, battery pack, and apparatus
US12132226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2023 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Feb 24, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application relates to a separator, including a substrate and a coating layer provided on at least one surface of the substrate. The coating layer includes organic particles and inorganic particles, the organic particles include first-type organic particles, the inorganic particles form an inorganic particle layer, and the first-type organic particles are embedded into the inorganic particle layer and form bulges on a surface of the inorganic particle layer. A number-based median particle size of the first-type organic particles is ≥12 μm, and a ratio of an average height of the bulges to a thickness of the inorganic particle layer is ≥4. This application further relates to a separator preparation method, a secondary battery containing such separator, and a related battery module, battery pack, and apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.