Patent ID: 7691505
Filing Date: 2010-04-06
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell stack including a laminate formed by combining a membrane electrode assembly composed of an electrolyte membrane, an anode jointed to one side of the electrolyte membrane, and a cathode joined to the other side of the electrolyte membrane, with a fuel channel plate having a fuel channel for supplying a fuel to the anode, an oxidant channel plate having an oxidant channel for supplying an oxidant to the cathode, and a heat-medium channel plate having a heat-medium channel for a heat medium to flow through; a unit which cools the heat medium exhausted from the fuel cell stack before puffing the heat medium into the fuel cell stack for circulation; a fuel humidifying unit which humidifies the fuel by heat exchange with the heat medium; an oxidant humidifying unit which humidifies the oxidant by heat exchange with the heat medium; and a control unit which stops power generation of the fuel cell in a system stopping process while continuing the circulation of the heat medium until a predetermined cooling stop condition holds.