Fuel cell system

摘要

A fuel cell system of the present invention includes: a fuel cell supplied with fuel gas and oxidizing gas to generate electricity; a fuel gas supply unit supplying the fuel gas to the fuel cell; an oxidizing gas supply unit supplying the oxidizing gas to the fuel cell; an aftercooler cooling the oxidizing gas supplied to the fuel cell by heat exchange with a coolant; an oxidizing gas temperature detector detecting temperature of the oxidizing gas; and a coolant circulation controller starting circulation of the coolant when the detected temperature of the oxidizing gas exceeds a predetermined value. The predetermined value is set to a value of not higher than a minimum electricity generation temperature of the fuel cell, and a circulation timing and flow rate of the coolant for the aftercooler are controlled such that the supplied oxidizing gas does not become cold. This enables the fuel cell to generate electricity at cold start-up.

主权项

1. A fuel cell system, comprising:
a fuel cell configured to be supplied with fuel gas and oxidizing gas to generate electricity, the fuel cell comprising an electrolyte membrane configured to contain water formed by reacting the fuel gas with the oxidizing gas; a fuel gas supply unit configured to supply the fuel gas to the fuel cell; an oxidizing gas supply unit configured to supply the oxidizing gas to the fuel cell; a component temperature detector configured to detect a temperature of a cooling system component disposed on a flow path through which a coolant circulates and reduces a temperature of the oxidizing gas and, wherein a coolant circulation controller is configured to start circulation of the coolant when the component temperature exceeds a predetermined temperature not higher than an upper temperature limit of the cooling system component.