FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL SYSTEM

摘要

A fuel cell system includes a fuel cell and a controller that controls a voltage of the fuel cell. The controller sets a target increase amount ΔV, based on a target voltage which is a target value of voltage relative to a predetermined electric current of the fuel cell. The controller sets a processing condition of a temporary voltage drop process, based on the target increase amount ΔV. The controller performs a temporary voltage drop process under the set processing condition. The temporary voltage drop process temporarily drops the voltage of the fuel cell based on a power generation characteristic of the fuel cell, so as to cause a temporary increase in electric current of the fuel cell and change the power generation characteristic of the fuel cell.

主权项

1. A fuel cell system, comprising:
a fuel cell; and a controller that controls a voltage of the fuel cell, wherein the controller sets a processing condition to change a power generation characteristic of the fuel cell expressed as a relationship between electric current and voltage, based on a target voltage increase amount, which is a difference between a present voltage relative to a predetermined electric current of the fuel cell and a target voltage that is a target value of voltage relative to the predetermined electric current of the fuel cell, and the controller performs a temporary voltage drop process under the processing condition, wherein the temporary voltage drop process temporarily drops the voltage of the fuel cell based on the power generation characteristic of the fuel cell, so as to cause a temporary increase in electric current of the fuel cell and change the power generation characteristic of the fuel cell.