Dynamic stable endurance wireless charging system for unmanned aerial vehicle

Abstract

The invention relates to the technical field of magnetic coupling resonance type wireless power transfer, in particular to a dynamic stable endurance wireless charging system for an unmanned aerial vehicle. The system comprises the unmanned aerial vehicle, a charging platform, a power transmitting unit and a power receiving unit, the power transmitting unit is arranged in the charging platform, and the power receiving unit is arranged on the unmanned aerial vehicle; the power transmitting unit transmits energy to the power receiving unit. By means of the wireless charging system, the error-tolerant rate between a transmission coil and a receiving coil is increased; dynamic stable endurance wireless charging can be achieved; a matrix type transmission coil is adopted, the coupling coefficient between the transmission coil and the receiving coil is increased, and the overall efficiency of the system is improved; the receiving coil adopts a three-dimensional five-coil structure, and the intensity of a magnetic field parallel to the plane where the transmission coil and the receiving coil are located is fully utilized; therefore, waste of a transmission coil non-directional magnetic field is reduced, and by means of a positioning auxiliary cover installed above a charging area, the requirement of the positioning precision is lowered.

Description

technical field [0001] The invention belongs to the technical field of magnetic coupling resonant wireless power transmission, and in particular relates to a wireless charging system for dynamic and stable battery life of unmanned aerial vehicles. Background technique [0002] According to different transmission mechanisms, wireless power transmission technology is mainly divided into four forms: electromagnetic radiation, electric field coupling, magnetic coupling resonance and ultrasonic coupling. The basic principle of magnetic coupling resonant wireless power transmission technology is: through the high-frequency inverter circuit, the direct current is converted into high-frequency alternating current, and the coils on both sides of the transmitting end and the receiving end undergo self-resonance under the cooperation of the compensation capacitor, so that the coil loop impedance value A minimum is reached, so that most of the energy oscillates back and forth between th...

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Problems solved by technology

[0004] At present, drone technology is developing rapidly, but the problems of insufficient battery power and limited battery life have not been resolved, which limits the development of drone applications.

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