According to the vehicle-mounted fuel cell parking purging method and system provided by the invention, electrical parts of a vehicle do not need to be added, and two working modes of voltage reduction and voltage boosting can be realized only by adopting a bidirectional isolation DCDC (Direct Current-Direct Current). Meanwhile, a mode that the low-voltage storage battery is matched with the bidirectional isolation DCDC is adopted, on the premise that a power battery is not used, the fuel cell can be purged for several times in a short time after the vehicle stops running, the purge mode can greatly shorten the time of single purge, the probability of mechanical damage to the proton exchange membrane is effectively reduced, and the service life of the fuel cell is prolonged.

    本发明提供一种车载燃料电池停车吹扫方法及系统,不需要增加车辆的电气部件,仅采用双向隔离DCDC,即可实现降压、升压两种工作模式。同时,采用低压蓄电池与双向隔离DCDC相配合的方式,可在不使用动力电池的前提下,完成车辆停驶后对燃料电池的分次短时吹扫,该吹扫模式可大大缩短单次吹扫的时间,有效减小质子交换膜受到的机械损伤的机率,延长燃料电池的使用寿命。


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    Title :

    Vehicle-mounted fuel cell parking purging method and system


    Additional title:

    一种车载燃料电池停车吹扫方法及系统


    Contributors:
    WANG HAIPING (author) / ZHANG PU (author) / YI YAFEI (author) / LI PENG (author) / GAO HUIGANG (author) / CHEN YUN (author) / JI YANQUAN (author) / YUAN DIAN (author) / YANG JUN (author)

    Publication date :

    2024-10-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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