Fuel cell system, control method for the fuel cell system, and vehicle equipped with the fuel cell system

摘要

A fuel cell system includes a fuel cell, a secondary cell, and a control portion that controls the amount of electricity generated when the fuel cell is started. A start-time target voltage is set so as to avoid the overcharged state of the secondary cell. A voltage adjustment portion that adjusts the output voltage of the fuel cell between an open-circuit voltage and a high-potential-avoiding voltage adjusts the amount of electricity generated at the time of starting the fuel cell, on the basis of the start-time target voltage.

主权项

1. A fuel cell system comprising:
a fuel cell that generates electricity through an electrochemical reaction between a fuel gas and an oxidant gas; a secondary cell that is chargeable and dischargeable and that is charged with electric power that is output from the fuel cell; a control portion that controls amount of electricity generated at a time of starting the fuel cell; a voltage adjustment portion that charges the secondary cell with surplus electric power at the time of starting the fuel cell, and that adjusts output voltage of the fuel cell between an open-circuit voltage and a high-potential-avoiding voltage; and a start-time target voltage setting portion that sets a start-time target voltage before the fuel cell starts generating electricity such that an overcharged state of the secondary cell is avoided, wherein the control portion controls the amount of electricity generated at the time of starting the fuel cell so that the start-time target voltage is reached.