The invention provides a power supply system of an electric crane. A power battery and an emergency power supply are arranged in parallel, when the power battery breaks down, a whole vehicle control unit cuts off an output circuit of the power battery and conducts an output circuit of the emergency power supply, and the emergency power supply is used for providing electric energy needed by liftingoperation or running operation of the electric crane; emergency retraction and downward bending of an arm support of the electric crane can be achieved, the load is released, the electric crane can automatically run to an open space or a maintenance place, the situation that the electric crane carries the load or the arm support does not retract and downward bend and cannot move is avoided, and the electric crane can also be prevented from hindering normal work of other devices.

    本发明提供了一种电动吊车的动力电源系统,通过并行设置动力电池和应急电源,并在动力电池故障时,整车控制单元切断动力电池的输出线路并导通应急电源的输出线路,利用应急电源来提供电动吊车举升操作或行驶操作所需的电能,可以实现电动吊车的紧急缩回和俯下臂架、释放负载且自行行驶至空旷处或维修处,避免电动吊车上载有负载或臂架未缩回和俯下而不能移动,也能够避免电动吊车阻碍其他设备的正常工作。


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    Title :

    Power supply system of electric crane


    Additional title:

    一种电动吊车的动力电源系统


    Contributors:
    ZHOU CHENGBO (author) / LI JIANGTAO (author) / ZHOU YABO (author)

    Publication date :

    2021-01-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B66C Krane , CRANES




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