The embodiment of the invention discloses an engineering machinery energy management system, a method, a device and a storage medium. A central controller in the system is used for controlling operation of a range extender, an energy management unit, a lithium battery system and a load. The range extender supplies power to the load according to the preset power, and in the power supply process, when the preset power is larger than the power needed by the load, the range extender supplies power to the load and charges the lithium battery system at the same time; when the preset power of the range extender is smaller than the power required by the load, the lithium battery system and the range extender supply power to the load at the same time; and the energy management unit is used for controlling connection or disconnection of circuits between every two of the range extender, the load and the lithium battery system. According to the system of the invention, the range extender supplies power to the load according to the preset power, and most power output by the range extender is directly supplied to the load, so that energy conversion consumption in the charging and discharging process of the energy storage system is avoided, and the energy efficiency of the range extender is greatly improved.

    本申请实施例公开了一种工程机械能量管理系统、方法、装置和存储介质,该系统中的中央控制器用于分别控制增程器、能量管理单元、锂电池系统和负载的运作;增程器按照预设功率为负载供电,并在供电过程中,当预设功率大于负载所需功率时,增程器为负载供电的同时为锂电池系统充电;当增程器的预设功率小于负载所需功率时,锂电池系统和增程器同时为负载供电;能量管理单元用于控制增程器、负载和锂电池系统两两之间的电路导通或断开。本申请实施例通过使增程器按照预设功率为负载供电,增程器输出的大部分功率直接供给负载,避免了储能系统充放电过程中的能量转换消耗,大大提高了增程器的能效。


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    Title :

    Engineering machinery energy management system, method, device and storage medium


    Additional title:

    工程机械能量管理系统、方法、装置和存储介质


    Contributors:
    YI LANGLIN (author)

    Publication date :

    2022-02-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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