Automatic voltage imbalance detector
US4424491A · kind A · utility
203Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | May 20, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for indicating and preventing damage to voltage cells such as galvanic cells and fuel cells connected in series by detecting sequential voltages and comparing these voltages to adjacent voltage cells. The device is implemented by using operational amplifiers and switching circuitry is provided by transistors. The device can be utilized in battery powered electric vehicles to prevent galvanic cell damage and also in series connected fuel cells to prevent fuel cell damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.