Patent ID: 8722265

Claim:
A fuel cell system comprising: a fuel cell that generates electric power upon a supply of a reaction gas; a power storage device that is charged with at least a part of power generated by the fuel cell; a control device including a high potential avoidance voltage setting device, the control device programmed to control an output voltage of the fuel cell with, as an upper limit, a high-potential avoidance voltage lower than an open end voltage thereof and variably set the high-potential avoidance voltage in accordance with a current state of charge of the power storage device based on a first threshold value and a second threshold value of the state of charge, wherein the second threshold value is higher than the first threshold value, wherein the high-potential avoidance voltage, which corresponds to the state of charge lower than the first threshold value, is lower than the high-potential avoidance voltage which corresponds to the state of charge between the first and the second threshold value, and wherein the high-potential avoidance voltage, which corresponds to the state of charge higher than the second threshold value, is higher than the high-potential avoidance voltage which corresponds to the state of charge between the first and the second threshold value.