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    METHOD AND SYSTEM FOR CONTROLLING HYDROGEN SUPPLY FOR FUEL CELL
    2.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING HYDROGEN SUPPLY FOR FUEL CELL 审中-公开

    公开(公告)号：US20190074529A1

    公开(公告)日：2019-03-07

    申请号：US15839227

    申请日：2017-12-12

    Applicant: Hyundai Motor Company ,  Kia Motors Corporation

    Inventor： Boung Ho Min ,  Kyung Won Suh ,  Kyu II Lee

    IPC: H01M8/04746 ,  H01M8/04089 ,  H01M8/0438 ,  H01M8/24 ,  H01M8/04992

    Abstract: A method and a system for controlling hydrogen supply for a fuel cell are provided. The method includes calculating a target hydrogen supply pressure, which is a target pressure value of hydrogen supplied to a fuel cell stack based on a required output. A fuel supply valve (FSV) duty is then adjusted based on the calculated target hydrogen supply pressure and modes are determined based on the FSV duty or actual hydrogen supply pressure measurements of a sensor. A hydrogen supply pressure measurement is calculated according to each of the determined modes and the FSV duty is corrected based on the calculated target hydrogen supply pressure and the hydrogen supply pressure measurement.

    Method and system for controlling charging of low-voltage battery
    9.
    发明授权
    Method and system for controlling charging of low-voltage battery 有权

    公开(公告)号：US10272797B2

    公开(公告)日：2019-04-30

    申请号：US15137186

    申请日：2016-04-25

    Applicant: Hyundai Motor Company

    Inventor： Kyu Il Lee ,  Boung Ho Min ,  Kyung Won Suh

    IPC: B60L1/00 ,  B60L11/18 ,  H02J7/00 ,  H02J7/34 ,  H02J1/00

    Abstract: A system and method for controlling charging of a low-voltage battery are provided. The method includes determining a state of charge of the low-voltage battery of a vehicle based on a voltage of the low-voltage battery and determining a state of charge of the low-voltage battery based on a magnitude of consumed power of a low-voltage direct current (DC) converter (LDC) providing charged power to the low-voltage battery during a period in which vehicle start-up is performed. A charged voltage of the low-voltage battery is then set based on a determination result of the state of charge of the low-voltage battery.

    Method for diagnosing current sensor of fuel cell system
    10.
    发明授权
    Method for diagnosing current sensor of fuel cell system 有权

    公开(公告)号：US09666887B2

    公开(公告)日：2017-05-30

    申请号：US14842809

    申请日：2015-09-01

    Applicant: HYUNDAI MOTOR COMPANY

    Inventor： Sung Gone Yoon ,  Kyung Won Suh

    IPC: G01R31/00 ,  H01M8/04664 ,  G01R19/00 ,  G01R35/00 ,  H01M8/0438 ,  H01M8/04537

    CPC classification number: H01M8/04686 ,  G01R19/0092 ,  G01R35/00 ,  H01M8/04388 ,  H01M8/04589

    Abstract: A method for diagnosing a current sensor of a fuel cell system includes calculating an estimated duty value of a hydrogen pressure control valve, corresponding to a sensing value of the current sensor, while operating the fuel cell system. The estimated duty value is compared with an actual duty value where the hydrogen pressure control valve is controlled during the operation of the fuel cell system, thereby calculating an error value between the estimated duty value and the actual duty value. The error value is compared with a critical value in a normal range, thereby determining whether a failure occurs in the current sensor. The hydrogen pressure control valve controls a pressure of hydrogen supplied to a fuel cell stack of the fuel cell system.

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