Long life metal-air (battery and button cells therefor) cell having increased current pulse capability
US5451473A · kind A · utility
24Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M50/216
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal-air cell is disclosed that provides high currents on an intermittent basis to electrical loads connected thereto. In one embodiment of the present invention, a restrictive membrane is effectively supported by the bottom of the cathode can, and is separated from an air cathode assembly disposed within the cell by an air reservoir. The air reservoir provides sufficient oxygen to the air cathode assembly during periods of high current drain upon the cell. Upon returning to low drain conditions, the air reservoir is gradually replenished by air flowing through the restrictive membrane at a controlled rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.