Vol. 120

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Research on Resonant Wireless Energy Supply Double-Layer Receiving Coupler for Portable Electronic Equipment

By Weihua Chen, Kun Qian, and Xiaoheng Yan
Progress In Electromagnetics Research C, Vol. 120, 275-291, 2022


In order to reduce the electromagnetic interference on the receiving side of electronic equipment in the process of wireless energy supply, a magnetic coupling resonant wireless energy supply system for portable electronic equipment with double-layer PCB coil structure is designed under the condition of 100 kHz. Firstly, the circuit principle is analyzed, and the compensation circuit model of LCC-P is established; Then, the coil model is constructed and optimized, the effects of turns and wire diameter on the coil self inductance and coupling coefficient are analyzed. The best parameters are selected, and the magnetic field distributions of the three coil structures at different distances are simulated and studied. Finally, an experimental platform is built to study the transmission efficiencies of different receiving coils at different spacings. The magnetic field intensities at different positions are compared to further verify the performance of double-layer coils. The experimental results show that when the coil spacing is in the range of 4-16 mm, the efficiency can reach 40%-71%. The central magnetic field of the coil is increased by 16%, and the external magnetic field is reduced by more than 20%. The temperature rise of one hour charging is 5.34˚C, which is only 0.78˚C higher than that of other coils


Weihua Chen, Kun Qian, and Xiaoheng Yan, "Research on Resonant Wireless Energy Supply Double-Layer Receiving Coupler for Portable Electronic Equipment," Progress In Electromagnetics Research C, Vol. 120, 275-291, 2022.


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