Separator including resin member formed inside porous substrate, and secondary battery equipped therewith
US10777795B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 4, 2016 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jul 6, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The separator for secondary battery, comprising: a porous substrate having a melting temperature or a decomposition temperature of 200° C. or more; and a resin member formed at least inside of the substrate in a plane section that occupies at least a part of a plane along with a thickness direction of the substrate; wherein said resin member is coated on inner surfaces of pores without completely blocking connecting paths that connects pores of the porous member, and wherein a distribution density of the resin member becomes lower toward inside of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.