The invention relates to a power management method for a multi-stack hydrogen fuel cell system. The power management method comprises the following steps: acquiring real-time information about the speed, acceleration and accelerator pedal of a vehicle; calculating the real-time power demand Pd of the vehicle; acquiring real-time state information of the multi-stack fuel cell system and a power cell; and according to the power demand Pd and the real-time state information, determining the number of opened fuel cell stacks in the multi-stack hydrogen fuel cell system at each moment through a lag control strategy, and then determining which fuel cell stacks are the ones to open according to the accumulated operation time of each fuel cell stack and the principle of uniform distribution of working time, thereby realizing power flow distribution of the power cell and the multi-stack hydrogen fuel cell system. According to the power management method, the effective working time of each fuel cell stack is shortened, start-stop frequency is reduced, and the service life of the system is prolonged; and the aging degrees of all the fuel cell stacks are close, and maintenance is convenient.

    本发明涉及一种多堆氢燃料电池系统功率管理方法,包括以下步骤:获取车辆速度、加速度和油门踏板实时信息;计算车辆实时功率需求Pd;获取多堆燃料电池系统和动力电池的实时状态信息;根据所述功率需求Pd和所述实时状态信息,通过滞后控制策略确定每一时刻的多堆氢燃料电池系统中燃料电池堆的开启数量,然后根据每个燃料电池堆的累计运行时间,依据工作时间均匀分布的原则确定开启哪些燃料电池堆,实现动力电池和多堆氢燃料电池系统的功率流分配。本发明的电池系统功率管理方法缩短了每个燃料电池堆的有效工作时间,减少了启停次数,延长了使用寿命;保证了各燃料电池堆的老化程度相近,便于维护。


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    Title :

    Power management method for multi-stack hydrogen fuel cell system


    Additional title:

    多堆氢燃料电池系统功率管理方法


    Contributors:
    ZHUANG WEICHAO (author) / NIU JUNYAN (author) / YIN GUODONG (author)

    Publication date :

    2021-11-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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