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Integrated module of bipolar plate for fuel cell stack

  • US 20040115513A1
  • Filed: 11/25/2003
  • Published: 06/17/2004
  • Est. Priority Date: 12/04/2002
  • Status: Abandoned Application
First Claim
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1. An integrated bipolar plate module for a fuel cell stack comprising a plurality of cell units, each of which includes a membrane electrode assembly including an anode catalyst layer, a cathode catalyst layer, and a proton exchange membrane between the anode and cathode catalyst layers, the membrane electrode assembly further including an anode gas diffusion layer and a cathode gas diffusion layer adjacent to the anode catalyst layer and the cathode catalyst layer respectively, the integrated bipolar plate module comprising:

  • a cathode fluid flow plate, formed with a plurality of channels for conveying a cathode gas;

    an anode fluid flow plate, formed with a plurality of channels for conveying an anode gas; and

    a coolant fluid flow plate, which is mounted and sandwiched between the cathode fluid flow plate and the anode fluid flow plate, formed with a plurality of channels for conveying a coolant between the cathode fluid flow plate and the anode fluid flow plate;

    whereby every two adjacent cell units of the fuel cell stack are separated by a bipolar plate module so that the cathode gas is conveyed to an adjacent cathode gas diffusion layer through the channels of the cathode fluid flow plate and the anode gas is conveyed to an adjacent anode gas diffusion layer through the channels of the anode fluid flow plate respectively.

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