Lithium battery protected from intrusion by pointed elements
US10147924B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2011 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Feb 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a lithium battery, the operation of which is security-protected by the interposition of resilient films. The battery is made up of a battery cell PEN, which comprises a film of an electrolyte E containing a lithium salt between a film P forming a positive electrode and a film N forming a negative electrode, or made up of a stack of battery cells PEN, said stack comprising two terminal battery cells between which are optionally placed one or more intermediate battery cells, said battery being characterized in that it comprises at least two protective films Fp made of a resilient material, at least one of the electrodes of the battery cell or of each terminal battery cell being in contact with a protective film Fp made of a resilient material. In particular, at least two protective films Fp are made of a resilient material having an elongation at break denoted by ame and a thickness denoted by eme, at least one of said protective films Fp in contact with a connection layer, for connecting an electrode, having a thickness emax, said film having a thickness eme such that eme>emax/ame. The invention relates to “lithium” batteries, the negative electrode of which…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.