FUEL CELL SYSTEM AND METHOD FOR CONTROLLING THE SAME
First Claim
1. A method for controlling a fuel cell system including a fuel cell and a secondary battery, to variably control an output power of the fuel cell, the method comprising the steps of:
- (i) charging the secondary battery with the output power or discharging the secondary battery, depending on an amount of power supplied to a load and the output power;
(ii) detecting a remaining capacity CR of the secondary battery;
(iii) selecting one of two or more preset power generation modes of the fuel cell differing in the output power, depending on the remaining capacity CR;
(iv) detecting the number of cycles of the charging and discharging of the secondary battery; and
(v) correcting conditions for selecting the power generation mode, on the basis of the detected number of cycles of the charging and discharging.
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Accused Products
Abstract
Disclosed is a method for controlling a fuel cell system including a fuel cell and a secondary battery, to variably control an output power of the fuel cell. The method includes the steps of: (i) charging the secondary battery with the output power or discharging the secondary battery, depending on an amount of power supplied to a load and the output power; (ii) detecting a remaining capacity CR of the secondary battery; (iii) switching stepwise the output power, depending on the remaining capacity CR; (iv) detecting the number of cycles of the charging and discharging of the secondary battery; and (v) correcting conditions for switching the output power, on the basis of the detected number of cycles of the charging and discharging.
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Citations
11 Claims
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1. A method for controlling a fuel cell system including a fuel cell and a secondary battery, to variably control an output power of the fuel cell, the method comprising the steps of:
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(i) charging the secondary battery with the output power or discharging the secondary battery, depending on an amount of power supplied to a load and the output power; (ii) detecting a remaining capacity CR of the secondary battery; (iii) selecting one of two or more preset power generation modes of the fuel cell differing in the output power, depending on the remaining capacity CR; (iv) detecting the number of cycles of the charging and discharging of the secondary battery; and (v) correcting conditions for selecting the power generation mode, on the basis of the detected number of cycles of the charging and discharging. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A method for controlling a fuel cell system including a fuel cell and a secondary battery, to variably control an output power of the fuel cell, the method comprising the steps of:
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(i) charging the secondary battery with the output power or discharging the secondary battery, depending on an amount of power supplied to a load and the output power; (ii) detecting a remaining capacity CR of the secondary battery; (iii) comparing the remaining capacity CR with at least one reference value RV, and selecting one of two or more preset power generation modes of the fuel cell differing in the output power, on the basis of a result of the comparison; and (iv) detecting the number of cycles of the charging and discharging, on the basis of the number of times the power generation mode has been switched.
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10. A fuel cell system including a fuel cell and a secondary battery, to variably control an output power of the fuel cell, the system comprising:
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a means for charging the secondary battery with the output power or discharging the secondary battery, depending on an amount of power supplied to a load and the output power of the secondary battery; a means for detecting a remaining capacity CR of the secondary battery; a means for selecting one of two or more preset power generation modes of the fuel cell differing in the output power, depending on the remaining capacity CR; a means for detecting the number of cycles of the charging and discharging the secondary battery; and a means for correcting conditions for selecting the power generation mode, on the basis of the detected number of cycles of the charging and discharging. - View Dependent Claims (11)
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Specification