| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for a fuel battery system that can suppress occurrence of fuel shortage during stop period and high voltage degradation of a unit cell.SOLUTION: A control device 200 of a fuel battery system 100 executes voltage reducing control of supplying fuel gas so that anode pressure is equal to predetermined pressure when the stack voltage during a stop period is not less than a predetermined voltage, calculates a fuel gas residual amount based on at least the pressure of a fuel gas source 22, estimates a fuel gas supply amount required to increase the anode pressure till the predetermined pressure, calculates an executable frequency of the voltage reducing control based on the fuel gas residual amount and the fuel gas supply amount, and notifies the supplement timing of the fuel gas based on the executable frequency and a time when the stack voltage can be kept to be less than the predetermined voltage after the voltage reducing control is executed. The control device 200 estimates the fuel gas supply amount based on the atmosphere pressure, or corrects a reference fuel gas supply amount required to increase the anode pressure from a reference pressure to a predetermined pressure based on the atmospheric pressure and estimates the fuel gas supply amount.SELECTED DRAWING: Figure 1 |
