FUEL CELL SYSTEM, METHOD AND PROGRAM OF DETERMINING CAUSE OF NEGATIVE VOLTAGE, AND STORAGE MEDIUM STORING PROGRAM

摘要

A fuel cell system includes a fuel cell (20); a voltage measuring portion that measures a voltage of the fuel cell (20); an electric current adjusting portion that adjusts an electric current flowing in the fuel cell (20); an electric current-voltage characteristic information obtaining portion that controls the electric current adjusting portion to change the electric current, and obtains electric current-voltage characteristic information that is information indicating a correspondence relation between an electric current value and a voltage value measured by the voltage measuring portion; and a negative voltage cause determining portion that determines, if the voltage of the fuel cell (20) is a negative voltage, a cause of the negative voltage of the fuel cell (20), based on the obtained electric current-voltage characteristic information.