The invention provides a high-voltage direct-current charging circuit and a charging method for an electric vehicle. The charging circuit comprises a power supply, a motor controller which comprises a first phase, a second phase and a third phase, a motor which comprises a first winding, a second winding and a third winding, a switch element K1 with one end connected to the parallel connection part of the first winding, the second winding and the third winding and the other end externally connected to a direct current charging seat, and an interface capacitor C2. When the direct current charging seat outputs low-voltage direct current to the charging circuit, the switch element K1 is closed, and the first phase, the second phase and the third phase are closed, so that the first phase, the second phase and the third phase are used as switch bridge arms of a booster circuit of the charging circuit, and the low-voltage direct current is boosted to high-voltage direct current based on energy extraction of the direct current charging seat. After the technical scheme is adopted, the driving inverter is used as the DCDC circuit of the power conversion circuit, so that the 400V direct-current quick charging pile can be directly applied to direct-current quick charging of an electric automobile with an 800V high-voltage bus system.

    本发明提供了一种电动汽车高压直流充电电路及充电方法,充电电路包括电源;电机控制器,包括第一相、第二相、第三相;电机,包括第一绕组、第二绕组及第三绕组;开关元件K1,一端连接在第一绕组、第二绕组及第三绕组的并接处,另一端外连至一直流充电座;接口电容C2;当直流充电座向充电电路输出低压直流电时,开关元件K1闭合,第一相、第二相、第三相闭合,使得第一相、第二相、第三相用作为充电电路的升压电路的开关桥臂,基于对直流充电座的抽能使得低压直流电升压至高压直流电。采用上述技术方案后,使用驱动逆变器作为功率变换电路的DCDC电路,使400V直流快速充电桩可直接应用于具有800V高压母线系统的电动汽车直流快速充电。


    Access

    Download


    Export, share and cite



    Title :

    High-voltage direct-current charging circuit and charging method for electric vehicle


    Additional title:

    一种电动汽车高压直流充电电路及充电方法


    Contributors:
    SHEN JIE (author) / LI YISU (author)

    Publication date :

    2021-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



    High-voltage direct-current charging circuit and method for electric vehicle

    SHEN JIE / LI YISU | European Patent Office | 2021

    Free access


    Direct-current charging contactor, ultrahigh-voltage electric vehicle and power battery charging method

    ZHOU LIN / WANG LUXI / LI JUN et al. | European Patent Office | 2021

    Free access

    Electric vehicle direct current charging interface and charging system

    WU HUIBO / WU KAIFEI / LI WEIFU | European Patent Office | 2021

    Free access

    CHARGING DEVICE FOR DIRECT-CURRENT CHARGING OF ELECTRIC VEHICLE

    FAN JINYAN | European Patent Office | 2024

    Free access