FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL

摘要

An object is to readily provide an output limit of a fuel cell by using temperature of a cooling medium, while improving the startability of a fuel cell. When a cell voltage obtained from an end-portion cell of a fuel cell is equal to or lower than a first threshold value, a controller of a fuel cell system sets an output limit amount used for output limit of the fuel cell to be smaller than an output limit amount according to temperature of a cooling medium measured by a temperature measurement unit.

主权项

1. A fuel cell system, comprising:
a fuel cell configured by stacking a plurality of cells; a cell monitor configured to measure voltage of each of the cells as a cell voltage; a temperature measurement unit configured to measure temperature of a cooling medium used to cool down the fuel cell; and a controller configured to provide an output limit of the fuel cell in response to a decrease of the cell voltage and determine an output limit amount for the output limit according to the temperature of the cooling medium measured by the temperature measurement unit, wherein when the cell voltage obtained from an end-portion cell of the fuel cell is equal to or lower than a first threshold value, the controller sets an output limit amount used for the output limit to be smaller than the output limit amount according to the temperature of the cooling medium measured by the temperature measurement unit.