FUEL CELL SYSTEM AND METHOD OF CONTROLLING OPERATION OF FUEL CELL
First Claim
1. A fuel cell system comprising:
- a fuel cell including an electrolyte membrane;
a sensor configured to measure a temperature of the fuel cell; and
a controller configured to cause the fuel cell to perform a wet operation to increase a water balance at a cathode of the fuel cell to a value higher than a water balance at the cathode during a normal operation of the fuel cell, when the temperature of the fuel cell measured by the sensor is maintained at a first threshold temperature or higher for a prescribed period of time or longer and then the temperature of the fuel cell decreases to below a second threshold temperature that is equal to or lower than the first threshold temperature.
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Accused Products
Abstract
A fuel cell system includes a fuel cell including an electrolyte membrane, a sensor configured to measure a temperature of the fuel cell, and a controller. The controller is configured to cause the fuel cell to perform a wet operation to increase a water balance at a cathode of the fuel cell to a value higher than a water balance at the cathode during a normal operation of the fuel cell, when the temperature of the fuel cell measured by the sensor is maintained at a first threshold temperature or higher for a prescribed period of time or longer and then the temperature of the fuel cell decreases to below a second threshold temperature that is equal to or lower than the first threshold temperature.
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Citations
8 Claims
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1. A fuel cell system comprising:
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a fuel cell including an electrolyte membrane; a sensor configured to measure a temperature of the fuel cell; and a controller configured to cause the fuel cell to perform a wet operation to increase a water balance at a cathode of the fuel cell to a value higher than a water balance at the cathode during a normal operation of the fuel cell, when the temperature of the fuel cell measured by the sensor is maintained at a first threshold temperature or higher for a prescribed period of time or longer and then the temperature of the fuel cell decreases to below a second threshold temperature that is equal to or lower than the first threshold temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling an operation of a fuel cell including an electrolyte membrane, the method comprising:
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measuring a temperature of the fuel cell; and causing the fuel cell to perform a wet operation to increase a water balance at a cathode of the fuel cell to a value higher than a water balance at the cathode during a normal operation of the fuel cell, when the temperature of the fuel cell is maintained at a first threshold temperature or higher for a prescribed period of time or longer and then the temperature of the fuel cell decreases to below a second threshold temperature that is equal to or lower than the first threshold temperature.
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Specification