The invention discloses an electric vehicle, a charging and discharging circuit thereof and a control method of the charging and discharging circuit. The charging and discharging circuit comprises a bidirectional DC/DC conversion unit, a motor control unit, a generator control unit, an isolation conversion unit, an OBC control unit, a first controllable switch unit and a second controllable switch unit, and the bidirectional DC/DC conversion unit, the motor control unit and the generator control unit are connected with one another. By configuring the on-off states of the first controllable switch unit and the second controllable switch unit, at least part of switch tubes in the bidirectional DC/DC conversion unit, the motor control unit, the generator control unit and the OBC control unit form a part of a charging and discharging loop, and energy isolation transmission between the power battery unit and external alternating current charging and discharging equipment is achieved. According to the charging and discharging circuit, the leakage current of the charging and discharging circuit can be reduced, the safety and the reliability of the charging and discharging circuit can be improved, and the weight and the size of the charging and discharging circuit can be reduced by forming a part of the charging and discharging loop through at least part of the switching tubes.

    本发明公开了一种电动车辆及其充放电电路和充放电电路的控制方法。该充放电电路包括:相互连接的双向DC/DC变换单元、电动机控制单元和发电机控制单元、以及隔离变换单元、OBC控制单元、第一可控开关单元和第二可控开关单元,电动车辆以交流充放电模式工作时,通过配置第一可控开关单元和第二可控开关单元的开关状态,使双向DC/DC变换单元、电动机控制单元、发电机控制单元和OBC控制单元中的至少部分开关管构成充放电回路的一部分,实现动力电池单元与外部交流充放电设备之间的能量隔离传递。本发明中,不仅可以减低充放电电路的漏电流,提高充放电电路的安全性和可靠性,而且通过至少部分开关管构成充放电回路的一部分,可降低充放电电路的重量和体积。


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    Title :

    Electric vehicle, charging and discharging circuit thereof and control method of charging and discharging circuit


    Additional title:

    电动车辆及其充放电电路和充放电电路的控制方法


    Contributors:
    CHEN MINGWEN (author) / LIU WENFANG (author) / ZHENG LEPING (author) / XUE PENGHUI (author) / WANG LIANG (author)

    Publication date :

    2023-08-08


    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



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