Wireless power transmission system, method and tracking type transmitting coil device

Abstract

The invention provides a wireless power transmission system and method as well as tracking-type transmitting coil devices. On the basis of the prior art in coil array wireless charging, the conventional fixed transmitting coil is designed to be a tracking-type transmitting coil, a plurality of sets of the tracking-type transmitting coil devices are arranged under the pavement along the road, and a vehicle positioning system is arranged; each set of the tracking-type transmitting coil device comprises the tracking-type transmitting coil, a guide rail, a pulley and a tracking device; the pavement direction of the guide rail is perpendicular to the advancing direction of an electric vehicle; each tracking-type transmitting coil is fixed on the corresponding pulley; a motor is mounted on each pulley; each tracking device acquires vehicle position information from a vehicle positioning system, sends a corresponding control signal to the corresponding motor of the pulley, and drives the pulley to move left and right on the corresponding guide rail, so that the corresponding tracking-type transmitting coil can achieve tracking of the electric vehicle. Through adoption of the wireless power transmission system and method as well as the tracking-type transmitting coil devices, the problem that a vehicle cannot drive on a high-charging-efficiency route and is low in charging efficiency is solved; the tracking-type transmitting coil devices can further be applied to other technical fields of wireless charging for charging efficiency improvement.

Description

technical field [0001] The present invention relates to a wireless charging technology, in particular to a coil array dynamic wireless charging technology, in particular to a tracking type high-efficiency wireless charging transmitting coil device applied to the coil array dynamic wireless charging technology. Background technique [0002] Wireless power transmission technology can be divided into three types: the first is inductively coupled power transmission, which uses the principle of loosely coupled transformers for charging, and the transmitting end and receiving end generally have an iron core device that reduces the loop reluctance, which is suitable for small power, short distance applications. The second type is electromagnetic coupling resonant power transmission, which is suitable for medium-distance energy transmission through the resonant transmission of inductance and distributed capacitance on the resonator with high quality factor. The third is electromagn...

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the technical problem of low charging efficiency of the existing coil array wireless charging system; it provides a technology using a tracking type high-efficiency wireless charging transmitting coil mechanism, and obtains the position information of the electric vehicle through the vehicle positioning system to realize the tracking of the electric vehicle. The tracking can greatly improve the charging efficiency

[0005] Another purpose of the present invention is to solve the problem of fixing the transmitting coil in the existing wireless power supply technology; it provides a technology that enables the transmitting coil to move and track by installing guide rails, pulleys, tracking devices and vehicle positioning systems to overcome the traditional dynamic charging. The disadvantage of low charging efficiency due to the left and right deviation of electric vehicles

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