| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving method of a fuel cell in which an optimal fuel concentration is set up and a stable operation and improvement of output power can be attained. <P>SOLUTION: In the operation method of a fuel cell device, a fuel shortage amount is calculated from a difference between a fuel concentration detected by a concentration detecting unit 31 and a predetermined required fuel concentration, and an power generation efficiency rate is obtained based on a temperature of the power generation unit 12 by a temperature detecting unit 18 and a load current of the power generation unit measured by a controlling unit 16. Based on an output of the power generation unit and the obtained power generation efficiency rate, a fuel consumption amount to be consumed by the generation of the power generation unit and a fuel equivalent to a sum of a calculated fuel shortage and a consumed fuel amount is supplemented to a mixing tank 28 by a supply unit and the fuel concentration supplied to the power generation unit is controlled. <P>COPYRIGHT: (C)2009,JPO&INPIT |
