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Fuel cell flooding detection

  • US 20050175872A1
  • Filed: 02/09/2004
  • Published: 08/11/2005
  • Est. Priority Date: 02/09/2004
  • Status: Active Grant
First Claim
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1. A fuel cell stack comprising:

  • a fuel cell having an inlet, a flow field in fluid communication with said inlet and an outlet in fluid communication with said flow field;

    a vaporized water source in fluid communication with said inlet;

    a differential pressure transducer repeatedly measuring a differential pressure across said flow field and generating a set of differential pressure signals; and

    a controller in communication with said differential pressure transducer, said controller having executable logic for determining a differential pressure fluctuation parameter from said set of differential pressure signals and control circuitry for controlling said vaporized water source in response to said differential pressure fluctuation parameter.

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