The invention discloses a dynamic wireless charging foreign matter detection method for an electric vehicle, and the method comprises the steps: calculating the output current of an inverter circuit when a primary side compensation circuit has no foreign matter in a charging state and a non-charging state of the electric vehicle; calculating the phase difference between the output current and theoutput voltage in the two states; calculating the output current of the inverter circuit when the electric vehicle is in a charging state or a non-charging state and foreign matters exist in the sidecompensation circuit; calculating the phase difference between the output current and the output voltage in the two states; detecting the actual current and the actual voltage of the inverter circuitand the actual phase difference between the actual current and the actual voltage in real time; and judging whether foreign matters exist between the primary side compensation circuit and a secondaryside compensation circuit or not when the electric vehicle is in different states. The method is simple in step, easy to implement and high in practicability.

    本发明公开了一种电动汽车动态无线充电异物检测方法,计算电动汽车处于充电状态和不充电状态下,原边补偿电路无异物时逆变电路的输出电流;计算两种状态下输出电流和输出电压之间的相位差;计算电动汽车处于充电状态和不充电状态下,边补偿电路有异物时逆变电路的输出电流;计算两种状态下输出电流和输出电压之间的相位差;实时检测逆变电路的实际电流和实际电压,以及实际电流和实际电压之间的实际相位差;判断电动汽车处在不同状态下,原边补偿电路与副边补偿电路之间有无异物。本方法步骤简单,易于实现,实用性强。


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    Title :

    Dynamic wireless charging foreign matter detection method for electric vehicle


    Additional title:

    一种电动汽车动态无线充电异物检测方法


    Contributors:
    FEI YIJUN (author) / YIN YONG (author) / XIAO YUHUA (author) / XU YAN (author) / YANG QINGSHENG (author) / LIU YU (author) / WU TAO (author)

    Publication date :

    2021-03-16


    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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