Flow field plates in fuel cells
US9853297B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2014 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Aug 19, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of producing a flow field plate for a fuel cell comprises over-profiling relief features in a die set to more accurately reproduce the intended flow channel features in the pressed plate. The process includes determining a target relief profile of features extending across the plate along at least a first dimension of the plate, modulating the relief profile with an over-profiling parameter, as a function of the first dimension; forming a die with the modulated relief profile; and pressing a flow field plate using the die with modulated relief profile to thereby produce the unmodulated, target relief profile in the flow field plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.