The invention relates to a wireless charging control method and device for an electric automobile. The method comprises the steps of detecting the voltage phase and the current phase of a coupling coil of an energy transmitting terminal in real time, and judging the size of the voltage phase and the current phase; and if the voltage phase leads/lags the current phase, controlling to reduce/increase the voltage duty ratio of an energy receiving terminal. In the wireless energy transmission process, when the voltage phase of the energy transmitting terminal leads the current phase, the voltage duty ratio of the energy receiving terminal is controlled to be reduced; and when the voltage phase of the energy transmitting terminal lags behind the current phase, the voltage duty ratio of the energy receiving terminal is controlled to be increased, so that the energy transmitting terminal and the energy receiving terminal can reach a resonance state, and the energy transmission efficiency is improved.

    本发明涉及一种电动汽车无线充电控制方法及装置,该方法包括:实时检测能量发射端耦合线圈的电压相位和电流相位,并判断电压相位和电流相位的大小;若电压相位超前/滞后电流相位,则控制减小/增大能量接收端的电压占空比。本发明通过在无线能量传输过程中,当能量发射端的电压相位超前电流相位时,则控制减小能量接收端的电压占空比;当能量发射端的电压相位滞后电流相位时,则控制增大能量接收端的电压占空比,从而使得能量发射端和能量接收端能够达到谐振状态,提高了能量传输效率。


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    Titel :

    Wireless charging control method and device for electric automobile


    Weitere Titelangaben:

    一种电动汽车无线充电控制方法及装置


    Beteiligte:
    ZHANG LONGFEI (Autor:in) / TONG LIFENG (Autor:in) / LIU WEI (Autor:in)

    Erscheinungsdatum :

    2020-04-17


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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