A new metal detection method based on balanced coil for mobile phone wireless charging system

2016 International Conference on New Energy and Future Energy System

Zhou, B.^1 ; Liu, Z.Z.^1 ; Chen, H.X.^1 ; Zeng, H.^1 ; Hei, T.^1

School of Electrical Engineering, Shandong University, Jinan

250061, China^1

关键词: Circuit modeling;    Detecting methods;    Hardware and software;    High temperature;    Magnetic field coupling;    Metal detection;    Wireless charging;    Wireless charging system;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012029/pdf
DOI  :  10.1088/1755-1315/40/1/012029

来源: IOP

【 摘 要 】

The wireless charging time of mobile phone will increase greatly if the metal objects mix in the magnetic field coupling area. In addition, the fire may be caused as for the high temperature of metal objects. The paper proposed an improved detecting method based on balance coil for mobile phone wireless charging system according to comparing the advantages and disadvantages of traditional metal detection methods. The circuit model was established, and hardware and software were optimized. At last, experimental results verified the theoretical analysis.