The invention discloses a fuel cell system and a whole vehicle power-on and insulation fault self-diagnosis method thereof, the fuel cell system comprises an electric pile, a boost DC and a whole vehicle lithium battery, an electric pile main negative contactor is arranged between an output end negative electrode of the electric pile and the boost DC, and a boost DC main negative contactor is arranged between an output end negative electrode of the boost DC and a negative electrode of the whole vehicle lithium battery; according to the whole vehicle power-on method of the fuel cell system, if the fuel cell system is not processed, all cooling liquid needs to be replaced; as the special cooling liquid for the fuel cell engine is expensive, the material cost for replacing the cooling liquid after long-time parking cannot be accepted; the after-sales labor cost is reduced; in the prior art, 1-2 after-sales personnel need to treat and replace cooling liquid in half a day, bubbles in a cooling pipeline need to be emptied after replacement is completed, and if the bubbles cannot be emptied, the stability of engine operation can be influenced.

    本发明公开了一种燃料电池系统及其整车上电和绝缘故障自诊断方法,包括电堆、升压DC和整车锂电池,所述电堆的输出端负极与升压DC之间设有电堆主负接触器,所述升压DC的输出端负极与整车锂电池的负极之间设有升压DC主负接触器;本发明提供了一种燃料电池系统的整车上电方法,若不是该来处理,则需要更换全部冷却液;由于燃料电池发动机专用冷却液价格昂贵,长时间停放一次更换一次冷却液物料成本接受不了;减少售后人力成本;现成更换冷却液需要1‑2名售后人员半天时间来处理更换,更换完成后还需要将冷却管路中的气泡排净,若气泡无法排净还会影响发动机运行的稳定性。


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    Title :

    Fuel cell system insulation resistance diagnosis and recovery method


    Additional title:

    一种燃料电池系统绝缘电阻诊断及恢复方法


    Contributors:
    YU KAI (author) / FANG YUGUANG (author) / LIU ZHIYANG (author) / LU JIANSHAN (author)

    Publication date :

    2023-06-09


    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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