Lithium ion battery with thermal sensitive layer
US9711774B2 · kind B2 · utility
2Cited by
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20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 3, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application provides a lithium ion battery including a thermal sensitive layer comprising polymer particles. The thermal sensitive layer may be disposed between the electrodes and the separator. When the lithium ion battery is under thermal runaway condition and the internal temperature rises to a critical temperature, the polymer particles undergo a thermal transition process (melting) to form an insulating barrier on the electrodes, which blocks lithium ion transfer between the electrodes and shuts down the internal current of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.