Fuel cell shut-down procedure including vaporization phase
US9048472B2 · kind B2 · utility
0Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2008 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Aug 5, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shut-down procedure for an electricity delivery system comprising a fuel cell, the cell being fed with pure oxygen as oxidant and delivering an electrical voltage to an electrical power line. The electricity delivery system comprises a fuel gas circuit on the anode side, and a pure oxygen circuit on the cathode side. The shut-down procedure comprises the steps of an initial step during which the oxygen gas feed is interrupted, and an electrical consumption phase during which a hold current is drawn from the fuel cell until the pressure in the oxygen circuit reaches the water vapor pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.