Unmanned aerial vehicle, unmanned aerial vehicle-mounted wireless receiving unit thereof and anti-offset coupling coil for wirelessly charging unmanned aerial vehicle

Abstract

The invention discloses an unmanned aerial vehicle, an unmanned aerial vehicle-mounted wireless receiving unit thereof and an anti-offset coupling coil for wirelessly charging the unmanned aerial vehicle. The unmanned aerial vehicle-mounted wireless receiving unit is used for transmitting electric energy with a transmitting coil mounted on a wireless charging platform unit through resonance magnetic coupling. The unmanned aerial vehicle-mounted wireless receiving unit comprises a main receiving coil (21) and two auxiliary receiving coils (22 and 23) connected with the main receiving coil in series; the main receiving coil is of a planar circular spiral coil structure; and the two auxiliary receiving coils are of long-strip-shaped structures. The anti-offset coupling coil for wirelessly charging the unmanned aerial vehicle comprises an unmanned aerial vehicle-mounted wireless receiving unit, and a transmitting coil (12) and a voltage-regulating frequency-conversion module which are mounted on the unmanned aerial vehicle wireless charging platform unit. The unmanned aerial vehicle comprises an unmanned aerial vehicle body and an unmanned aerial vehicle-mounted wireless receiving unit. Magnetic field coupling can be guaranteed when the unmanned aerial vehicle lands at any position on the charging platform, and barrier-free stable charging of the unmanned aerial vehicle is achieved.

Description

Technical field [0001] The invention relates to an unmanned aerial vehicle and its carrying wireless receiving unit and an anti-offset coupling coil for wireless charging thereof, belonging to the technical field of unmanned aerial vehicles. Background technique [0002] The concept of Wireless Power Transfer (WPT) was first proposed by the scientist Nikola Tesla in the 19th century. In recent years, when the Marin Soljacic research team at the Massachusetts Institute of Technology (MIT) used this technology to light up a 60-watt light bulb at a distance of two meters, it has once again become a research hotspot in academia. [0003] The working principle of the wireless charging system is: the high-frequency AC power generated by the high-frequency AC power is passed into the transmitting coil, and an alternating high-frequency magnetic field is generated in the space around it; when the high-frequency magnetic field passes through the receiving coil, according to the law of elect...

AI Technical Summary

Problems solved by technology

[0005] It is precisely because of the distribution characteristics of the magnetic field that when the transmitting and receiving devices cannot be completely aligned, part of the magnetic field will not be effectively coupled and utilized.

As the offset increases, the effective magnetic field coupled will become less and less, and the transmission efficiency will decrease accordingly, which cannot meet the corresponding requirements of the load, that is, the system cannot maintain stable operation when the offset is large

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