Method for diagnosing water-containing state of fuel cell stack
US10964962B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Mar 2, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for diagnosing a water-containing state of a fuel cell stack includes steps of: applying an alternating current (AC) signal having a predetermined frequency to the fuel cell stack to calculate each of an electrolyte membrane impedance, an anode impedance, and a cathode impedance from an output voltage and an output current of the fuel cell stack corresponding to the AC signal; and diagnosing the water-containing state of the fuel cell stack on the basis of the electrolyte membrane impedance, the anode impedance, and the cathode impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.