FUEL CELL SYSTEM

摘要

A fuel cell system (10) includes: a fuel cell stack (20) which receives a reaction gas and generates electricity; and a controller (70) which supplies to the fuel cell stack (20), a high-pressure reaction gas as compared to the normal operation pressure when the temperature of the fuel cell stack (20) is below a predetermined threshold value and a water amount contained in the fuel cell stack (20) is below a predetermined threshold value. When the reaction gas supply pressure is increased, the water removal amount by the reaction gas is lowered and the water balance in the fuel cell stack proceeds in such a direction that the water contained in the reaction gas is accumulated in a film-electrode assembly. However, since the water amount contained in the fuel cell stack (20) is below the threshold value, it is possible to increase the low-temperature start performance while suppressing flooding.