| 摘要 |
PROBLEM TO BE SOLVED: To reset a lowered voltage by draining water sufficiently, even when the water content difference of laminated cells is large, and there is a cell of less air flow.SOLUTION: In a fuel cell system 1 including a fuel cell 2 constituted of a plurality of cells 21, a cell monitor 170 for detecting the cell voltage of each cell 21 and a control unit 7, when the difference of water content of some cells 21 and other cells 21 goes over a predetermined value, e.g., when the cell voltage difference ΔV between the average cell voltage Va of respective cell voltages and the lowest cell voltage Vb in respective cell voltages is larger than a first threshold, the fuel cell 2 is operated with a power generation amount exceeding that at the time of normal operation, thus reducing the cell voltage difference ΔV of the average cell voltage Va and lowest cell voltage Vb.SELECTED DRAWING: Figure 1 |
