The present invention discloses an electric automobile charging system. On one hand, high-voltage alternating current output by a power grid is subjected to voltage division in the mode that N power modules are connected in series and directly hung on the power grid, voltage reduction is conducted through a DC-DC conversion module, a step-down transformer does not need to be arranged, the system loss is small, and N is a positive integer not smaller than 2. The power module comprises a first H-bridge rectifier module, a first capacitor, an H-bridge inverter module, an isolation transformer, a second H-bridge rectifier module, a second capacitor and a DC-DC conversion module. On the other hand, the power module does not need to be provided with a cabinet, the size of the whole system is greatly reduced, and construction cost is obviously reduced. Besides, the output voltage of the DC-DC conversion module is the DC voltage, the electric vehicle can be charged only by connecting a charging wire with the charging module, the number of required cables is small, a feeder cabinet does not need to be arranged, and the whole charging system can rapidly charge 3N electric vehicles at the same time.

    本发明公开了一种电动汽车充电系统,一方面,通过N个功率模块串联直挂电网的方式对电网输出的高压交流电进行分压,经DC‑DC转换模块进行降压,无需设置降压变压器,系统损耗较小,N为不小于2的正整数。功率模块包括第一H桥整流模块、第一电容、H桥逆变模块、隔离变压器、第二H桥整流模块、第二电容及DC‑DC转换模块。另一方面,功率模块无需设置柜体,整体系统的体积大幅度减小,建设成本明显降低。此外,由于DC‑DC转换模块输出电压为直流电压,只需充电线连接充电模块,即可为电动汽车充电,需要的线缆数量较少,无需设置馈线柜,且整个充电系统可以同时满足3N台电动汽车的快速充电。


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    Title :

    Electric automobile charging system


    Additional title:

    一种电动汽车充电系统


    Contributors:
    HE JIANMING (author) / QIU WENJUN (author) / ZHANG MIN (author) / ZHOU FANGYUAN (author) / WU LIRAN (author) / CHEN GUANGZAN (author) / TIAN HUAGUI (author) / TIAN ZHE (author) / XIAO YUXIANG (author) / XU XIAOTIAN (author)

    Publication date :

    2021-11-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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