A control apparatus for a vehicle-mounted fuel cell power generation
system in accordance with the invention predicts a possibility of
collision of a vehicle. If determining that the possibility of collision
is high (YES at S12), the control apparatus stops the fuel cell power
generation system. By stopping the power generation before a collision
occurs, the safety of the fuel cell power generation system can be
improved. If after the system stops, a collision does not occur (NO at
S16), the system is restarted. If a collision occurs (YES at S16),
high-voltage relays are switched off to stop the supply of electric power
from an electricity storage to various loads of the vehicle.