The control method of fuel cell system and fuel cell system

The control method of fuel cell system and fuel cell system

  • CN 101,946,352 B
  • Filed: 02/10/2009
  • Issued: 09/16/2015
  • Est. Priority Date: 02/19/2008
  • Status: Active Grant
First Claim
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1. a fuel cell system, possesses:

  • Fuel cell, clamps membrane-electrode assembly and being formed by dividing plate, and described membrane-electrode assembly is formed by engaging anode and negative electrode respectively on the two sides of dielectric film;

    Fuel gas supply portion, to described anode supply fuel gas;

    Oxidant gas supply unit, to described negative electrode supply oxidant gas;

    Coolant circulation portions, is used in the coolant cooling described fuel cell and is recycled to the coolant stream be formed in described dividing plate;

    AndControl part,Described control part is after the generating of described fuel cell stops, be predicted as the generation water generated because of the electrochemical reaction between described fuel gas and described oxidant gas in generating can freeze in described membrane-electrode assembly time, described generation water freeze tight before the moment carry out following temperature gradient formation control;

    start described fuel gas supply portion and described oxidant gas supply unit;

    And/or start described coolant circulation portions, with the mode formation temperature gradient between described membrane-electrode assembly and described dividing plate making the temperature of described membrane-electrode assembly relatively uprise than the temperature of described dividing plate,Described temperature gradient formation control only carries out during till formation temperature gradient between membrane-electrode assembly and dividing plate, stops rapidly after this temperature gradient of formation.

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