Patent ID: 8603693

Claim:
An output limiting device for a fuel cell which is cooled by a coolant supplied thereto, comprising: an inlet coolant temperature sensor which detects an inlet coolant temperature at a coolant inlet of the fuel cell; an outlet coolant temperature sensor which detects an outlet coolant temperature at a coolant outlet of the fuel cell; and an output limiter which limits power or current extracted from the fuel cell according to the detected inlet coolant temperature and the detected outlet coolant temperature, wherein the output limiter comprises: an output limiting value calculation unit configured to calculate an output limiting value as a limiting value of the power or current according to the inlet coolant temperature; an output limiting value correction unit configured to correct the output limiting value to be smaller, as a deviation obtained by subtracting a target temperature limit at the coolant outlet of the fuel cell from the outlet coolant temperature becomes larger; and a limiting unit configured to limit the power or current extracted from the fuel cell, based on the corrected output limiting value.