Method of making bipolar plate with coolant channels
US7855031B2 · kind B2 · utility
1Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Oct 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Bipolar plates in a fuel cell stack tend to experience lower operating temperatures near and at the ends of the stack, and these plates require lower coolant flow. But common stamping tooling can be used to make all of the plates for the stack when suitable coolant flow restrictors are stamped into each plate for lowest coolant flow. The flow restrictors are then trimmed (or their formation avoided) from those plates designated for higher coolant flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.