The invention discloses an electric vehicle wireless charging foreign matter detection system transmitting side power control method and system, and relates to the field of foreign matter detection for an electric vehicle wireless charging system, and the method comprises the steps that the electric vehicle wireless charging system transmits electric energy from a transmitting side to a receiving side load through magnetic induction coupling; meanwhile, the biological foreign matter detection system starts to operate, the detection circuit processes the voltage of the detection coil to obtain detection voltage, the detection voltage is input into the DSP control circuit, and whether the biological foreign matter exists or not is judged; the output voltage of the inverter is adjusted by adjusting the PWM driving phase shift angle through the transmitting side power control system, and whether the biological foreign matter leaves or not is verified, so that the transmitting side power is controlled. By adopting the phase shift control power regulation method, the system size is reduced, the high-frequency loss is reduced, the power regulation accuracy is improved, the safety control on the power of the transmitting side is realized, and meanwhile, the wireless charging speed of the electric vehicle is increased.

    本发明公开了电动车无线充电异物检测系统发射侧功率控制方法及系统,涉及电动汽车无线充电系统用异物检测领域,包括电动汽车无线充电系统通过磁感应耦合将电能从发射侧传输至接收侧负载中;同时生物异物检测系统开始运行,检测电路对检测线圈的电压进行处理,得到检测电压,并将此检测电压输入至DSP控制电路中,判断是否存在生物异物;通过发射侧功率控制系统调节PWM驱动移相角调节逆变器输出电压,并验证生物异物是否离去,从而控制发射侧功率。本发明通过采用移相控制的功率调节方法,不仅减小系统体积,还减少高频损耗,提高功率调节的精确性,实现对发射侧功率的安全控制,同时加快电动汽车的无线充电速度。


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    Title :

    Transmission side power control method and system of electric vehicle wireless charging foreign matter detection system


    Additional title:

    电动车无线充电异物检测系统发射侧功率控制方法及系统


    Contributors:
    MO YUHONG (author) / XIAO JING (author) / CHEN SHAONAN (author) / ZHOU KE (author) / ZHUO HAOZE (author) / CHEN WEIDONG (author) / WU XIAORUI (author) / GONG WENLAN (author) / LIU QUAN (author) / GUO MIN (author)

    Publication date :

    2024-10-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    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 / 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



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