FUEL CELL SYSTEM AND VOLTAGE LIMIT METHOD

摘要

Provided is a fuel cell system which can suppress melting out of the positive electrode by an excessive electromotive force without increasing a power consumption during generation of electricity. When an electromotive force V1 by a generation unit (10) exceeds a predetermined threshold voltage Vp at which the positive electrode of each of unit cells (10A to 10F) melts out, the power based on the exceeding voltage ?V is thermally consumed by a voltage limit circuit (3) so as to limit the electromotive force V1 of the generation unit (10) is limited to the threshold voltage Vp or below. The voltage limit circuit may include a Zener diode, a shunt regulator, and a transistor.