The invention provides a vehicle-mounted quick charging system. In a driving mode, an inversion unit converts direct current output by a load battery into alternating current to drive a motor. In a charging mode, an input rectification unit is connected to an alternating current power supply and is composed of a plurality of groups of rectification circuit bridge arms and a follow current tube, and the follow current tube is an upper bridge switch tube and a lower bridge switch tube of a first bridge arm in the inversion unit, the first bridge arm or a plurality of bridge arms. An energy storage inductor is connected with a DC/DC conversion unit. The DC/DC conversion unit is connected with the load battery, is composed of at least one bridge arm except the bridge arm serving as the followcurrent tube in the inversion unit or the bridge arm where the switch tube serving as the follow current tube is located, and is used for outputting direct current to the load battery. According to the system, a part of devices of an electric vehicle inverter are repeatedly used as a part of an input rectifier stage and an output DC/DC stage in a charging circuit, so that the cost and the size arereduced, the power density of the system is improved, and the technical scheme integrating charging and driving is achieved.

    本发明提供了一种车载快速充电系统,在驱动模态下,逆变单元将负载电池输出的直流电转换为交流电,驱动电机;在充电模态下,输入整流单元接入交流电源,该单元由多组整流电路桥臂及续流管组成,续流管为逆变单元中第一桥臂的上桥开关管、下桥开关管、第一桥臂或多条桥臂;储能电感连接DC/DC转换单元;DC/DC转换单元连接负载电池,由除逆变单元中作为续流管的桥臂或作为续流管的开关管所在的桥臂以外的至少一条桥臂构成,用于输出直流电至负载电池。该系统重复利用了电动车逆变器的部分器件,作为充电电路中输入整流级以及输出DC/DC级的一部分,降低了成本与体积,提高了系统的功率密度,是一个集成充电和驱动的技术方案。


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    Titel :

    Vehicle-mounted quick charging system


    Weitere Titelangaben:

    一种车载快速充电系统


    Beteiligte:
    LIN ZHUANG (Autor:in)

    Erscheinungsdatum :

    2020-12-11


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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