Method and system for anode gas recirculation in fuel cells
US8672643B2 · kind B2 · utility
0Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2009 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One of the main objects in providing optimal mass exchange for fuel cells, especially mobile fuel cells, is anode gas supply to fuel cell stack based on stoichiometric characteristics depending on variable loads and anode gas recirculation. External loads may vary in wide range and arbitrary change, thus complicate the optimal mass exchange in fuel cell stack. A new original technology is disclosed for anode gas supply using a multi-stage ejector. This technology, an ejector design and control system allow increasing fuel cell efficiency with quick loads changing from minimal to maximal as well as at cold start.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.