基于电磁谐振式无线充电线圈实验研究

The experimental study on coils based on electromagnetic resonance wireless power transfer

消费类电子产品传统的外接充电方式一般通过"有线"方式来实现。多电子设备充电装置之间往往并不通用,携带多个充电器也存在不便。目前,无线充电已成为广泛关注的替代方案。文中通过实验对电磁谐振式无线充电方法进行研究,在分别改变线圈半径、线圈匝数、线圈疏密程度以及谐振频率的情况下,得到并对比其在不同状态下的性能。首先,采用MOSFET对整个电路进行分析设计,其中发射电路和接收电路均采用电感与电容的并联匹配方式;其次,对发射线圈和接收线圈的不一致性进行分析。

The traditional way of charging of consumer electronics products is generally realized by wired mode. Considering charging devices between electronic equipments are not compatible,and it is not convenient to carry a plurality of chargers. At present,wireless charging has become a hot spot,potentially to replace the wired charging. This paper presents the electromagnetic resonance type wireless charging circuit. By changing the coil radius,coil turns,the density and the resonant frequency,respectively,the performance is obtained and compared under different conditions above. It first analyzes and designs circuit by MOSFET,where both transmitting and receiving circuit are using parallel matching of inductor and capacitor,Then it analyzes the inconsistency of the transmitting coil and receiving coil.