HYDROGEN RECIRCULATION SYSTEM FOR FUEL CELL VEHICLE

A hydrogen recirculation system for a fuel cell vehicle is provided to allow recirculation of hydrogen by using compression energy of high-pressure hydrogen, to avoid a need for an additional power source, to control the recirculation flow depending on the load on a stack, to prevent a drop in press...

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Bibliographic Details
Main Author HWANG, KI HO
Format Patent
LanguageEnglish
Published 20.02.2008
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:A hydrogen recirculation system for a fuel cell vehicle is provided to allow recirculation of hydrogen by using compression energy of high-pressure hydrogen, to avoid a need for an additional power source, to control the recirculation flow depending on the load on a stack, to prevent a drop in pressure, and to facilitate design of a pressure regulator. A hydrogen recirculation system for a fuel cell vehicle allows hydrogen stored in a hydrogen tank(100) to be depressurized through regulators(110,120) and to be supplied to a fuel cell stack(130), and causes the hydrogen discharged from the stack(130) to be reutilized through a hydrogen recirculation line(150). In the hydrogen recirculation system, a hydrogen recirculation turbine(10) is mounted to a hydrogen feeding line(140) so as to permit recirculation of hydrogen by using compression energy of the hydrogen feed while controlling the recirculation pressure by the recirculated hydrogen having a variable flow depending on the output of the stack(130).
Bibliography:Application Number: KR20060124671