Lithium ion secondary battery
US8114543B2 · kind B2 · utility
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Key dates
| Filing date | Dec 11, 2006 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2029 |
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, having a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode, the positive electrode and the negative electrode each having a collector and an active material layer provided over the collector, and the relationship Ts≧4Tc being satisfied, where Ts is the puncture strength of the separator, and Tc is the puncture strength of the collector of the positive electrode and/or the negative electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.