Polyelectrolytic fuel cell and the method of controlling the ope

Details Polyelectrolytic fuel cell and the method of controlling the ope Polyelectrolytic fuel cell and the method of controlling the ope

1995-11-09

1999-08-17

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 34, H01M 804

Patent

active

059392185

ABSTRACT:
When at least either one of the output voltage and internal resistance of a plurality of stacked unit cells and the humidity of oxidizing gas being discharged has deviated from the tolerance, the supply conditions of oxidizing gas to the polyelectrolytic fuel cell are changed. Specifically, when output voltage had decreased, when internal resistance has increased, or when the humidity of discharge gas has increased, the flow rate of oxidizing gas is increased, or its pressure increases, or the humidity of oxidizing gas is reduced. As a result, moisture inside the cell is removed and flooding and the resulting falls in output voltage are prevented. In addition, the generation of hydrogen gas in the passages for oxidizing gas is contained.

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