The invention provides a power control method of a fuel cell system. The power control method comprises the following steps: starting the fuel cell system; judging whether the fuel cell system is in arunning state or not, and if so, acquiring riding demand power Preq; solving a target current Ireq according to a power-current relation obtained in advance, and enabling the output current Iout of the fuel cell to be equal to the target current Ireq; acquiring actual output power Po of the fuel cell and judging whether the actual output power is in a steady state or not; if so, calculating powerdeviation and judging whether the rate deviation delta P= Preq-Po is greater than or equal to a preset threshold Pt or not; if so, calculating current deviation delta I according to the output current Iout, the required power Preq and the power deviation delta P; and making the output current of the fuel cell be equal to Iout+delta I. The method has the advantages that the maximum net output power of the fuel cell stack is estimated without depending on the identification process of a polarization curve, and the method is suitable for more application scenes; and output current fluctuation ofthe fuel cell stack cannot be caused, and the service life attenuation of the fuel cell stack cannot be accelerated.

    本发明提供了一种燃料电池系统的功率控制方法,包括:燃料电池系统启动;判断燃料电池系统是否处于运行状态,若“是”获取乘车需求功率P;根据预先得到功率‑电流关系求得目标电流I并使燃料电池的输出电流I等于目标电流I;获取燃料电池的实际输出功率P并判断实际输出功率是否处于稳态,若“是”计算功率偏差并判断率偏差ΔP=P‑P是否大于等于预设的阈值P,若“是”根据输出电流I、需求功率P和功率偏差ΔP计算电流偏差ΔI;使燃料电池的输出电流等于I+ΔI。这种方法的优点在于:不依赖极化曲线的辨识过程对燃料电池电堆的最大净输出功率进行估算,适用于更多的应用场景;不会引起电堆输出电流波动且不会加速电堆的寿命衰减。


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    Titel :

    Power control method of fuel cell system


    Weitere Titelangaben:

    一种燃料电池系统的功率控制方法


    Beteiligte:
    ZHAO XINGWANG (Autor:in) / ZHANG GUOQIANG (Autor:in) / YANG SHAOJUN (Autor:in) / JIA NENGYOU (Autor:in) / ZHANG HE (Autor:in)

    Erscheinungsdatum :

    2020-07-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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