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US 12,749,692 B2Granted
System and method for controlling fuel cell
AssigneesHyundai Motor Company, Kia Corporation
InventorYong Hee Lee
Life of this patent
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Abstract
A system and a method for controlling a fuel cell according to an embodiment are disclosed. The system for controlling a fuel cell includes a fuel cell, a hydrogen purge valve connected between the fuel cell and a hydrogen tank and configured to supply or cut off hydrogen to the fuel cell, and a controller configured to adjust an opening degree of the hydrogen purge valve based on an accumulated current value of the fuel cell calculated in advance and control a flow rate of the hydrogen.
Claims18
A system for controlling a fuel cell, the system comprising:
- the fuel cell;
- a hydrogen purge valve connected between the fuel cell and a hydrogen tank and configured to supply or cut off hydrogen to the fuel cell;
- and
- a controller configured to adjust an opening degree of the hydrogen purge valve based on an accumulated current value of the fuel cell calculated in advance and control a flow rate of the hydrogen,
- wherein the controller includes:
- a current management unit configured to accumulate currents of the fuel cell to calculate the accumulated current value;
- a duty ratio calculation unit configured to calculate a duty ratio of a pulse width modulation (PWM) signal based on the calculated accumulated current value;
- and
- a valve control unit configured to generate the PWM signal having the calculated duty ratio and apply the generated PWM signal to the hydrogen purge valve to adjust the opening degree of the hydrogen purge valve.
6 more elements
A method of controlling a fuel cell, the method comprising:
- accumulating, by a controller, currents of the fuel cell to calculate an accumulated current value;
- calculating, by the controller, a duty ratio of a pulse width modulation (PWM) signal based on the calculated accumulated current value,
- adjusting, by the controller, an opening degree of a hydrogen purge valve based on the calculated accumulated current value;
- and
- controlling, by the controller, a flow rate of hydrogen, wherein the controlling includes generating, by the controller, the PWM signal having the calculated duty ratio and applying, by the controller, the generated PWM signal to the hydrogen purge valve to adjust the opening degree of the hydrogen purge valve.
2 more elements
Dependencies are inferred from the claim text.