Recently, more and more unmanned aerial vehicles (UAVs) have been used in industry, public services and commercial fields. However, the UAV is generally limited by the battery capacity, and the operation radius is greatly limited. In this paper, to increase the flight time of the UAV, the recharging station by using wireless power transfer technology is proposed. A new receiver magnetic coupler is given, the receiver coil is wound around the hollow ferrite core, which realizes the strong coupling of the primary and secondary coils, and improves the anti-misalignment ability of the UAV. The weight of the receiver is relatively light, so the effect on the weight bearing of UAV is small. In addition, the compact coil structure is also easy to install on the UAV. The feasibility of the proposed wireless charging method is verified by a 185 W laboratory prototype. The weight of the magnetic receiver is 98 g and the operating distance is 20 mm, with a measured maximum efficiency of 90.40%.

近来，越来越多的无人机被用于工业，公共服务和商业领域。但是，UAV通常受到电池容量的限制，并且操作半径受到很大限制。为了增加无人机的飞行时间，提出了利用无线电力传输技术的充电站。给出了一种新型接收器磁耦合器，接收器线圈缠绕在空心铁氧体磁芯上，实现了初级线圈和次级线圈的强耦合，并提高了无人机的抗错位能力。接收器的重量相对较轻，因此对无人机的承重影响很小。另外，紧凑的线圈结构也易于安装在无人机上。185 W实验室原型验证了所提出的无线充电方法的可行性。磁接收器的重量为98克，工作距离为20毫米，测得的最大效率为90.40％。