The invention relates to the technical field of electric vehicles, in particular to a load current balancing method and device of a charging pile and the charging pile. The current balancing device comprises a plurality of power supply modules which are connected in parallel and a plurality of standby redundant modules, the invention also provides a load current balancing method of the charging pile, and the method comprises the following steps: automatically setting the power supply module with the maximum output current as a main module, and setting the other power supply modules as slave modules; acquiring a voltage error V1'of the main module; each differential amplifier module outputs the voltage reference difference delta V of each slave module; each slave module is modulated according to the voltage reference difference delta V, so that the output current of each slave module is consistent with that of the master module, and on the basis of the prior art, aiming at the problem of current imbalance easily caused by a mode that a plurality of charging modules are connected in parallel in the charging pile, when the power supply module fails to operate, the standby redundant module is replaced in time, and the power supply module is replaced in time. And the load current of the charging pile can be balanced.

    本发明涉及电动汽车技术领域,具体涉及一种充电桩的负载电流均衡方法、装置和充电桩;电流均衡装置包括若干相互并联的电源模块以及若干备用冗余模块,还提出一种充电桩的负载电流均衡方法,包括如下步骤:将输出电流最大的电源模块自动设置为主模块,其余电源模块为从模块;获取主模块的电压误差V1';各差分放大器模块输出各从模块的电压基准差ΔV;各从模块根据电压基准差ΔV进行调制,使得各从模块输出电流与主模块一致,在现有技术的基础上,针对于充电桩使用多个充电模块并联的方式容易出现电流不均衡的问题,在电源模块出现无法运行的故障时,及时更换备用冗余模块,使得充电桩的负载电流能达到均衡。


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    Titel :

    Load current balancing method and device of charging pile and charging pile


    Weitere Titelangaben:

    一种充电桩的负载电流均衡方法、装置和充电桩


    Beteiligte:
    QIAN CHANG (Autor:in)

    Erscheinungsdatum :

    2023-08-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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