Method for detecting the permeability state of the ion exchanger polymer membrane of a fuel cell
US9252441B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Procedure for detecting the permeability state of the polymeric ion-exchange membrane of a fuel cell stack, in which, as soon as the pressure difference in the anode and cathode circuits drops to a value below a threshold value PS, the pressure variation in said circuits for a predetermined time period tC is measured and the pressure difference in these circuits at the end of a predetermined time period, called the control pressure PC, is calculated and a warning is given when the control pressure PC is below a warning threshold PA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.