Gas leak detection method for fuel cell
US6815107B2 · kind B2 · utility
13Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to improve detecting accuracy in a gas leak detection for a fuel cell, in a gas leak detection method for a fuel cell having a solid polymer electrolyte membrane sandwiched by an anode and a cathode, an output voltage is measured in an activated over-potential region in a state in which the pressure of fuel gas which is supplied to the anode is maintained higher than the pressure of gas which is supplied to the cathode, and a gas leak is determined to exist when the output voltage is lower than a predetermined pressure value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.