| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel battery system that can suppress degradation of power generation performance.SOLUTION: A fuel battery system includes a fuel battery which is supplied with oxidant gas and fuel gas to generate power, a supplier for supplying the oxidant gas to the fuel battery, a re-supplier for re-supplying the oxidant gas discharged from the fuel battery to the fuel battery, and a controller for performing a refresh operation for recovering the power generation performance of the fuel battery, estimating the cell voltage of the fuel battery after increase based on the refresh operation, and reducing the oxygen concentration of the oxidant gas to be supplied to the fuel battery by driving the supplier and the re-supplier when the estimated cell voltage exceeds a predetermined upper limit value based on a power generation amount required with respect to the fuel battery.SELECTED DRAWING: Figure 1 |
