| 摘要 |
<P>PROBLEM TO BE SOLVED: To estimate water distribution in a fuel cell stack by a simple structure to appropriately control the power generation of a fuel cell. <P>SOLUTION: A fuel cell system includes a unit cell 610, the fuel cell stack 600 formed by laminating the unit cells, an oxide gas supply system 700 supplying an oxide gas to the fuel cell stack, a cooling system 750 supplying a coolant flowing in a direction intersecting with an oxide gas flowing direction to the fuel cell stack, a temperature measuring unit 790 measuring the temperature of the coolant discharged from the fuel cell stack at an upstream and a downstream of the oxide gas flow, and a control unit 530 deciding a dry state in the fuel cell stack using a difference between two coolant temperatures to control the supply and discharge of the oxide gas to and from the fuel cell stack based on the dry state. <P>COPYRIGHT: (C)2011,JPO&INPIT |
