FUEL CELL SYSTEM AND METHOD OF RECOVERYING CELL VOLTAGE THEREOF

摘要

An amount of power generation is increased in the case where a difference in water content between some and others of the cells is greater than a predetermined value. In the case of satisfaction of a first condition that the difference in water content between some and others of the cells is greater than the predetermined value, a fuel battery may be caused to perform an operation in which the amount of power generation exceeds that in the normal operation to reduce a cell voltage difference .DELTA.V between an average cell voltage Va and a minimum cell voltage Vb. The first condition is, for example, that the cell voltage difference .DELTA.V, which is a difference between the average cell voltage Va and the minimum cell voltage Vb, is greater than a first threshold value.