The invention relates to the field of engineering machinery, and discloses a power supply method and a power supply system for engineering machinery, and the power supply method comprises the steps: dividing loads in the engineering machinery into a first-stage load, a second-stage load and a third-stage load according to the power supply priority from high to low; under the condition that it is determined that an engine of the engineering machine is not started, when it is determined that commercial power is input, the commercial power supplies power to the first-stage load and the second-stage load, and when it is determined that no commercial power is input, a storage battery of the engineering machine supplies power to the first-stage load, and the second-stage load supplies power to the second-stage load; and the storage battery selectively supplies power to the secondary load or removes power from the secondary load according to the electric quantity condition. According to the power supply method, on the premise that basic functions of the engineering machinery are maintained, the electricity shortage phenomenon of the storage battery is avoided, and therefore the problem that the electric quantity of the storage battery is insufficient to start the engine is solved.

    本发明涉及工程机械领域,公开了一种工程机械的供电方法及供电系统,供电方法包括:将工程机械中负载按照从高到底的供电优先级分为一级负载、二级负载以及三级负载;确定工程机械的发动机未启动的情况下,当确定有市电输入时,使所述市电为所述一级负载和所述二级负载供电,当确定没有市电输入时,使工程机械的蓄电池为所述一级负载供电,并使所述蓄电池根据电量情况选择性地为所述二级负载供电或撤去供电。本发明的供电方法可在确保工程机械维持基本功能的前提下,避免蓄电池的亏电现象,从而避免蓄电池的电量不足以启动发动机的问题。


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    Title :

    Power supply method and power supply system for engineering machinery


    Additional title:

    工程机械的供电方法及供电系统


    Contributors:
    TANG SHUDI (author) / ZHENG JIE (author) / WANG FENG (author) / HU YUZHI (author) / DENG XIAO (author)

    Publication date :

    2025-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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