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Proton exchange membrane fuel cell stack and fuel cell stack module

  • US 8,026,020 B2
  • Filed: 05/08/2007
  • Issued: 09/27/2011
  • Est. Priority Date: 05/08/2007
  • Status: Active Grant
First Claim
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1. A proton exchange membrane fuel cell stack, comprising:

  • a plurality of repeating, serially electrically coupled fuel cell stack modules, wherein the respective fuel cell stack modules include an electrically conductive heat sink having a low thermal conductive mass, and wherein the thermal conductive mass of individual heat sinks of individual fuel cell stack modules provide a substantially different degree of cooling for each of the respective fuel cell stack modules within the fuel cell stack, so that a resulting operating temperature of any one of the plurality of fuel cell stack modules differs from an operating temperature of any other of the plurality of fuel cell stack modules by less than about ten percent.

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