Sealed battery with less electrolyte leakage
US6838207B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2000 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The object of the present invention is to provide a sealed battery that includes a gas release valve formed on the closure cap by covering a gas release hole with a thin film that rarely breaks even if the battery is dropped. For this object, the external casing of the sealed battery includes a shielding member passing no drop of the electrolyte between the thin film and the generator element so as to form a gas channel from the internal space of the external casing to the gas release hole. When the sealed battery is dropped, electrolyte drops are pushed out of the generator element at the side opposed to the thin film. The thin film, however, is prevented from being directly hit by the drops due to the presence of the shielding member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.