Lithium ion secondary battery and method for manufacturing the same
US9972818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Mar 9, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion secondary battery according to an embodiment of the present disclosure includes: a positive electrode extending along a first direction; a negative electrode extending along the first direction and disposed opposite to the positive electrode along a second direction orthogonal to the first direction; and a separator with a crosslinked structure, extending along the first direction and provided between the positive electrode and the negative electrode. The separator includes an opposite region opposite to the positive electrode and the negative electrode along the second direction, and a surplus region not opposite to the positive electrode and/or the negative electrode along the second direction, and the surplus region has lower porosity than the opposite region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.