The invention relates to a method for accurately measuring the impedance of a fuel cell stack in a vehicle during operation of the vehicle. The method includes: determining whether measuring the impedance of the fuel cell stack is requested during driving of the vehicle driven by using a power of a fuel cell stack, switching a DC-DC converter connecting the fuel cell stack and a battery to each other to a buck mode when measuring the impedance is requested, thereby blocking output current of the fuel cell stack from flowing to the battery through the DC-DC converter, determining a first current value of the fuel cell stack for measuring the impedance, controlling a resistance value of a COD variable resistor consuming the output current of the fuel cell stack according to the first current value, and measuring the impedance of the fuel cell stack while the output current of the fuel cell stack is maintained at the first current value.

    本公开涉及一种用于在车辆运行期间精确地测量车辆中燃料电池堆的阻抗的方法,该方法包括:判断在通过利用燃料电池堆的电力驱动的车辆运行期间是否请求测量燃料电池堆的阻抗;当请求测量阻抗时,将连接燃料电池堆和电池的DC‑DC转换器切换到降压模式,从而切断燃料电池堆的输出电流通过DC‑DC转换器流到电池;确定用于测量阻抗的燃料电池堆的第一电流值;根据第一电流值,控制消耗燃料电池堆的输出电流的COD可变电阻器的电阻值;以及在将燃料电池堆的输出电流保持为第一电流值时,测量燃料电池堆的阻抗。


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    Titel :

    METHOD FOR MEASURING IMPEDANCE OF FUEL CELL STACK IN VEHICLE


    Weitere Titelangaben:

    用于测量车辆中燃料电池堆的阻抗的方法


    Beteiligte:
    PARK GUN-HYUNG (Autor:in)

    Erscheinungsdatum :

    2021-06-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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