Water management in fuel cells
US8277998B2 · kind B2 · utility
1Cited by
4References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 31, 2004 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Dec 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrochemical fuel cell having an anode, an ion transfer membrane and a cathode has liquid water delivered to the fluid flow channels within the cathode so as to maintain a relative humidity of 100% throughout the fluid flow channels. A calibration method and apparatus is described for determining an optimum quantity or range of quantities of liquid water to be delivered to the cathode fluid flow channels under varying operating conditions. An operating method and apparatus is described that ensures an optimum quantity of liquid water is delivered to the cathode fluid flow channels under varying operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.