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US 12,119,523 B2Granted
Fuel cell system and method for controlling the same
AssigneesHyundai Motor Company, Kia Corporation
InventorSeung Ho Shin
Life of this patent
Estimating the term…
Abstract
A fuel cell system and a method for controlling the same may adjust generation of condensate water in a fuel cell by setting relative humidities and temperature and pressure conditions of the fuel cell so as to maintain a constant current density, and may alleviate performance deterioration of the fuel cell during operation by removing an excessive amount of the generated condensate water by injecting a cathode pressure impulse into the fuel cell.
Claims11
A method for controlling a fuel cell system, the method comprising:
- deriving, by a controller, target relative humidities of a fuel cell;
- deriving, by the controller, operating conditions of the fuel cell to achieve the target relative humidities of the fuel cell;
- controlling, by the controller, operation of the fuel cell based on the derived operating conditions, and measuring output voltage of the fuel cell;
- and
- controlling, by the controller, an air supplier of the fuel cell to form an impulse to supply air to the fuel cell when the output voltage of the fuel cell is less than a target output voltage reference;
- wherein controlling the air supplier comprises:
- comparing the measured output voltage with the target output voltage reference, and forming a cathode pressure impulse by controlling the air supplier of the fuel cell depending on a result of comparison;
- and
- injecting the formed cathode pressure impulse into the fuel cell.
6 more elements
A fuel cell system comprising:
- a fuel cell stack comprising channels of an anode and a cathode, and a reaction part formed between the two channels;
- a hydrogen supplier configured to supply hydrogen to the channel of the anode of the fuel cell stack;
- an air supplier configured to supply air to the channel of the cathode of the fuel cell stack;
- and
- a controller configured to derive target relative humidities of a fuel cell and operating conditions of the fuel cell depending on the target relative humidities, to control operation of the fuel cell based on the derived operating conditions, to measure output voltage of the fuel cell, and to control the air supplier of the fuel cell to form an impulse so as to supply air to the fuel cell when the output voltage of the fuel cell is less than a target output voltage reference;
- wherein controlling the air supplier comprises:
- comparing the measured output voltage with the target output voltage reference, and forming a cathode pressure impulse by controlling the air supplier of the fuel cell depending on a result of comparison;
- and
- injecting the formed cathode pressure impulse into the fuel cell.
6 more elements
Dependencies are inferred from the claim text.