面向便携式电子设备的无线电能传输研究

Research on Wireless Power Transmission for Portable Electronic Devices

基于耦合模理论研究了强磁耦合谐振技术应用于便携式电子设备无线电能传输的可行性。结合理论分析结果,设计并制作出便携式电子设备大小的平面螺旋电感,构造高品质因数值谐振体。根据系统阻抗随谐振体之间距离变化的特点,设计出4线圈结构的系统拓扑以实现系统阻抗匹配。搭建实验平台,测试系统传输特性,实验结果表明系统在一定距离内传输效果良好,实现了中距离的无线电能传输。证明了系统设计的可行性。

The feasibility of using strong magnetic resonance coupling technology for wireless power transmission for portable electronic devices is analyzed based on the coupled mode theory.Combined with theoretical analysis,the planar inductors with the size of portable electronic devices are designed and made and the high quality factor resonators are constructed.As the impedance of the system changes when the distance between the resonators varies,the four coils structure is designed to match the impedance of the system.The experiment platform is set up to test the transmission characteristics of the system.The experimental results show that the system is of good transmission efficiency within a certain distance.The mid-range wireless power transmission is successfully implemented and the feasibility of the system design is proved.