FUEL CELL SYSTEM AND REFRIGERANT FLOW RATE ESTIMATION METHOD OF FUEL CELL SYSTEM

摘要

This fuel cell system is provided with: a fuel cell group comprising multiple fuel cells; a refrigerant distribution flow path which distributes a refrigerant individually to the fuel cells constituting the fuel cell group; a pre-distribution refrigerant flow rate acquisition unit which acquires a pre-distribution refrigerant flow rate, which is the flow rate of the refrigerant prior to distribution; a first outlet temperature detection unit which is provided in the refrigerant outlet of at least a first fuel cell in the fuel cell group in the refrigerant distribution flow path and which detects a first outlet temperature, which is the outlet temperature of the refrigerant in the first fuel cell; a voltage acquisition unit which acquires a first voltage, which is the voltage of at least the first fuel cell; a current acquisition unit which acquires a first current, which is the current of at least the first fuel cell; and a controller. The controller calculates a first individual supply flow rate of the first fuel cell on the basis of the first voltage, the first current, and the first outlet temperature, and calculates a second individual supply flow rate of at least one second fuel cell, which is a fuel cell other than the first fuel cell, on the basis of the first individual supply flow rate and the pre-distribution refrigerant flow rate.