The invention provides a load changing device for a fuel cell engine, belongs to the technical field of hydrogen fuel cells, and solves the problem that stable operation cannot be ensured due to local gas shortage in the load changing process of an existing fuel cell. The device comprises a gas flow sensor used for measuring the real-time gas flow at an air inlet of the engine; a current sensor used for measuring the real-time output current of the fuel cell; and an air compression control device which is used for judging whether cross-working-condition load changing occurs or not after starting according to a load changing instruction of a user, and determining a target gas flow after the starting time according to the load changing type, controlling the air compressor to respond at an air inlet speed exceeding the target gas flow, and in the response process, identifying the initial time when the target gas flow is reached, obtaining the output current of the fuel cell at each initial time, and judging whether the load changing process is stable or not, if not, performing supplementary response, and adjusting to the gas flow corresponding to the load changing target after the load changing process is stable.

    本发明提供了一种用于燃料电池发动机的变载装置,属于氢燃料电池技术领域,解决了现有燃料电池变载过程中局部欠气、无法保证稳定运行的问题。该装置包括:气体流量传感器,用于测量发动机进气口处的实时气体流量;电流传感器,用于测量燃料电池的实时输出电流;空气压缩控制设备,用于根据用户的变载指令启动后,判断是否发生跨工况变载;以及,根据变载类型确定启动时刻之后的目标气体流量,控制空气压缩机以超过目标气体流量的进气速度进行响应,并且,在上述响应过程中,识别达到目标气体流量的初始时刻,获取每一初始时刻燃料电池的输出电流,判断变载过程是否稳定,如果不稳定,进行补充响应,直到稳定后调整至变载目标对应的气体流量。


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    Title :

    Load changing device for fuel cell engine and load changing method thereof


    Additional title:

    用于燃料电池发动机的变载装置及其变载方法


    Contributors:
    GUO XINYUAN (author) / LIU RAN (author) / DAI LIJUN (author) / GAO YUNQING (author) / LI FEIQIANG (author)

    Publication date :

    2021-10-12


    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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