Transmit-receive antenna structure for magnetic resonance coupling wireless power transmission system

Abstract

The invention discloses a transmit-receive antenna structure for a magnetic resonance coupling wireless power transmission system. Based on a magnetic resonance coupling wireless power transmission scheme, a transmitting antenna employs a series resonance coil array structure with reverse winding, and a receiving antenna employs a resonance coil structure with parasitic coupling. The transmittingantenna is of a flat plate type design and comprises three dielectric layers and four printed circuit structures, and an outermost planar multi-turn coil and a plurality of inner planar multi-turn coils are connected in series to form a closed coil structure. The receiving antenna is also of a flat-plate structure, the front surface is a receiving resonance coil, and the back surface is a parasitic coupling resonance coil. By adopting the series resonance coil array structure with the reverse winding, the transmission efficiency is kept balanced when the receiving antenna moves at different transverse positions in the area of the transmitting antenna, so that the wireless charging and power supply requirements of one or more electronic devices are met when the size difference of the wireless transmitting and receiving ends is large.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to a transceiver antenna structure for a magnetic resonance coupling wireless power transmission system. Background technique [0002] With the continuous development of electronic information technology and automation control technology, various home appliances, electronic consumer products, mobile communication equipment, etc. are widely popularized. Traditional household appliances generally rely on the wired connection between the power cord and the power socket to supply power to the device. Electronic devices with built-in batteries generally also use a wired connection between the charging cable and the power socket, so in daily life In life, wires occupy a lot of our activity space, and subsequently limit the convenience of equipment use. However, in recent years, the research and application of wireless energy transmission technology has rap...

AI Technical Summary

Problems solved by technology

The traditional single-coil structure, that is, only one multi-turn square loop coil, is difficult to meet the requirements of stable transmission efficiency when the receiving antenna is placed in different positions within the range of the transmitting antenna. Only when the receiving antenna is placed parallel to the center of the transmitting antenna , its transmission efficiency is high, but when moving to the edge, the transmission efficiency drops very obviously, especially in the edge area of ​​the transmitting antenna is very low

In addition, by adding a reverse winding structure in the multi-turn square loop coil, the problem of the horizontal degree of freedom of the transmitting and receiving antenna can be improved. Most of the positions can meet the daily charging needs, but when the receiving antenna moves to the opposite direction of the transmitting antenna When going to the winding area, the transmission efficiency drops significantly, it can also be said that the transmission efficiency is not high, and it cannot meet the current demand for wireless charging

Images