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Cell maintenance device for fuel cell stacks

  • US 7,474,078 B2
  • Filed: 12/19/2003
  • Issued: 01/06/2009
  • Est. Priority Date: 12/19/2003
  • Status: Expired due to Fees
First Claim
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1. A fuel cell maintenance device, comprising:

  • a switch;

    a pulse generator capable of pulsing a cathode of at least one cell of a fuel cell stack through the switch when the switch is closed wherein the pulse generator generates a digital pulse;

    a relay capable of shorting the cell of a fuel cell stack; and

    a dielectrically isolated driver capable of driving the relay.

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