POWER GENERATION STOPPING METHOD FOR FUEL CELL SYSTEM AND FUEL CELL SYSTEM
First Claim
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1. A power generation stopping method for a fuel cell system including a fuel cell, comprising:
- continuing generating electric power by the fuel cell via electrochemical reaction between fuel gas and oxidant gas during a post running period after the fuel cell system is ordered to stop;
supplying a coolant at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature; and
supplying a coolant to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature.
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Abstract
A power generation stopping method for a fuel cell system including a fuel cell, includes continuing generating electric power by the fuel cell via electrochemical reaction between fuel gas and oxidant gas during a post running period after the fuel cell system is ordered to stop. A coolant is supplied at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature. A coolant is supplied to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature.
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Citations
3 Claims
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1. A power generation stopping method for a fuel cell system including a fuel cell, comprising:
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continuing generating electric power by the fuel cell via electrochemical reaction between fuel gas and oxidant gas during a post running period after the fuel cell system is ordered to stop; supplying a coolant at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature; and supplying a coolant to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature. - View Dependent Claims (2)
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3. A fuel cell system comprising:
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a fuel cell to generate electric power via electrochemical reaction between fuel gas and oxidant gas; a fuel gas supplier to supply the fuel gas into the fuel cell; an oxidant gas supplier to supply the oxidant gas into the fuel cell; a coolant supplier to supply a coolant into the fuel cell; and circuitry configured to control the fuel cell to continue generating the electric power during a post running period after the fuel cell system is ordered to stop; control the coolant supplier to supply the coolant at a first flow rate to the fuel cell during the post running period until temperature of the fuel cell reaches a threshold temperature; and control the coolant supplier to supply the coolant to the fuel cell at a second flow rate larger than the first flow rate during the post running period after the temperature of the fuel cell has reached the threshold temperature.
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Specification