Method of controlling opening degree of air flow rate control valve in fuel cell stack and apparatus
AssigneesHyundai Motor Company, Kia Corporation
InventorsSeung Man Park, Jae Sung Ryu, Ji Hoon Ryu
Life of this patent
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Abstract
An apparatus of a fuel cell system may perform a method comprising, based on entry into an idle operation state of a fuel cell stack of the fuel cell system after start-up of the fuel cell system, controlling airflow to the fuel cell stack such that a current of the fuel cell stack converges to a predetermined current, based on the current of the fuel cell stack converging to the predetermined current, controlling a voltage drop slope of a fuel-cell direct current DC-DC converter (FDC), and controlling, based on the controlled voltage drop slope of the FDC, an operation of the fuel cell stack.
Claims20
A method performed by an apparatus of a fuel cell system, the method comprising:
- based on entry into an idle operation state of a fuel cell stack of the fuel cell system after start-up of the fuel cell system, controlling airflow to the fuel cell stack such that a current of the fuel cell stack converges to a predetermined current;
- based on the current of the fuel cell stack converging to the predetermined current, controlling a voltage drop slope of a fuel-cell direct current DC-DC converter (FDC);
- and
- controlling, based on the controlled voltage drop slope of the FDC, an operation of the fuel cell stack.
An apparatus of a fuel cell system, the apparatus comprising:
- a processor;
- and
- a memory storing at least one instruction that, when executed by the processor communicating with the memory, is configured to cause the apparatus to:
- based on entry into an idle operation state of a fuel cell stack of the fuel cell system after start-up of the fuel cell system, control airflow to the fuel cell stack such that a current of a fuel cell stack converges to a predetermined current, and
- based on the current of the fuel cell stack converging to the predetermined current, control a voltage drop slope of a fuel-cell direct current DC-DC converter (FDC).
A method performed by an apparatus of a fuel cell system, the method comprising:
- reducing, based on detecting entry into an idle operation state of a fuel cell stack of the fuel cell system, an air supply to the fuel cell stack to decrease a current of the fuel cell stack;
- controlling, based on the current of the fuel cell stack being reduced to a predetermined threshold, a voltage of the fuel cell stack to follow a predefined voltage drop profile during the idle operation state;
- adjusting an air supply condition based on a deviation between the voltage of the fuel cell stack and a reference voltage;
- and
- controlling, based on the adjusted air supply condition, an operation of the fuel cell system.
Dependencies are inferred from the claim text.