The invention discloses a method for detecting the charging range of a wireless charging system, which is used for identifying the alignment positions of a transmitting coil and a receiving coil based on a mutual inductance principle so as to reliably detect the charging range of the wireless charging system. The wireless charging system comprises a transmitting end and a receiving end, and is characterized in that the transmitting end comprises a direct-current power supply, a high-frequency inverter, a first compensation inductor, a first group of compensation capacitors and a transmitting coil; the receiving end comprises a receiving coil, a second group of compensation capacitors, a second compensation inductor, a rectifying and filtering module and a system load; # imgabs0 # Ucf2 = (j.omega.Lf2 + RLf2 + RL). ILf2 can be obtained by listing a Kirchhoff voltage equation of a secondary side, so that the impedance of # imgabs1 # is equal to that of Lf2 and Cf2 at the frequency of 85.5 kHz, and when RL tends to 0, the mutual inductance detection value of the system # imgabs3 # can be obtained by # imgabs2 #

    本发明公开了一种无线充电系统充电范围检测方法,其基于互感原理来识别发射线圈和接收线圈的对位位置,进而可靠检测无线充电系统的充电范围。无线充电系统包括发射端和接收端,其特征在于:所述发射端包括直流电源、高频逆变器、第一补偿电感、第一组补偿电容、发射线圈;所述接收端包括接收线圈、第二组补偿电容、第二补偿电感、整流滤波模块、系统负载;通过列写副边的基尔霍夫电压方程可得到#imgabs0#Ucf2=(j·ω·Lf2+RLf2+RL)·ILf2进而得到#imgabs1#由Lf2和Cf2在85.5kHz频率下阻抗相等,当RL趋向于0的时候,#imgabs2#可以得到系统的互感检测值为#imgabs3#


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    Title :

    Charging range detection method for wireless charging system


    Additional title:

    一种无线充电系统充电范围检测方法


    Contributors:
    MENG HAO (author) / HU CAIFEI (author) / SONG LEI (author) / XU BIN (author)

    Publication date :

    2025-03-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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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