Stop control method for fuel cell system

A stop control method for a fuel cell system of a vehicle can include: determining whether a fuel cell of the fuel cell system is shut down when a key-off signal is received; comparing a voltage of the fuel cell with a first set voltage when it is determined that the fuel cell is not shut down; cont...

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Bibliographische Detailangaben
Hauptverfasser:	Park, Gun Hyung, Kim, Hyun Hie
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A stop control method for a fuel cell system of a vehicle can include: determining whether a fuel cell of the fuel cell system is shut down when a key-off signal is received; comparing a voltage of the fuel cell with a first set voltage when it is determined that the fuel cell is not shut down; controlling a voltage of a high-voltage terminal downwardly when the voltage of the fuel cell is larger than the first set voltage; turning on a cathode oxygen depletion (COD) relay a first time after controlling the voltage of the high-voltage terminal downwardly; turning off a high-voltage terminal relay a first time after turning on the COD relay, the high-voltage relay disposed between the fuel cell and the high-voltage terminal; and shutting down the fuel cell and performing key-off control after turning off the high-voltage terminal relay.