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FCPM freeze start heater

  • US 8,053,117 B2
  • Filed: 06/09/2004
  • Issued: 11/08/2011
  • Est. Priority Date: 06/09/2004
  • Status: Expired due to Fees
First Claim
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1. A fuel cell system comprising:

  • a fuel cell stack providing output power; and

    a heater circuit including a heater for heating the fuel cell stack during system start-up, said heater being electrically coupled to the output of the fuel cell stack, said heater circuit further including a controller for controlling the amount of heat provided by the heater, said controller monitoring stack voltage and current flow through the heater and controlling the amount of power the heater draws from the stack based on the amount of power that is available from the stack.

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