印制无线电能传输线圈的设计与优化

Design and Optimization of Printed Wireless Power Transmission Coils

为更好地适应无线充电技术的应用需求,设计一种具有较高平面偏移容忍度的无线电能传输系统磁耦合结构。该结构的接收端采用印制电路板制作,并在不增加敷铜面的基础上集成平面螺线管结构,在保证线圈制作精度及结构稳定的基础上,提高磁耦合机构的抗偏移性能。依据互感原理建立基于LCC-S谐振网络的系统数学模型。根据磁耦合机构互感波动及系统效率优化线圈尺寸参数。依据优化结果制作磁耦合机构及传输系统样机。磁耦合机构互感参数测量及系统传输实验结果表明,该结构在一定平面偏移范围内具有较好的抗偏移效果。

In order to better adapt to the application requirements of wireless power transmission technology,a magnetic coupling structure of WPT system with a high misalignment tolerance was designed.The receiving end of this structure is made of PCB,and a planar solenoid structure is integrated without increasing the copper surface.,which improves the misalignment tolerance performance of the magnetic coupling mechanism while ensuring the accuracy of coil production and structural stability.Firstly,a system mathematical model was established based on LCC-S resonant network according to the principle of mutual inductance..The coil size parameters were optimized based on the mutual inductance fluctuation and system efficiency,and a prototype was developed based on the optimization results.The measurement of mutual inductance parameters of the magnetic coupling mechanism and the experimental results of system transmission show that the structure has good anti offset effect within a certain range of plane offset.