| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply device which can cope with a high load demand, while taking into consideration the power generation efficiency of a fuel cell. <P>SOLUTION: The power supply device comprises the fuel cell, a power storage device which is connected to an electrical load in parallel with the fuel cell, and a control device which controls output of the fuel cell and charge of the storage device. The control device drives the fuel cell at a high efficiency point (step S15, S17), when the load demand is smaller than the power at the high efficiency point of the fuel cell (step S13:y) and charges the surplus power to the storage device. When the load demand is the same or more than the power at the above high efficiency point (S13:n), power corresponding to the load demand is outputted from the fuel cell (step S31, S17). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
