Magnetic Resonance Based Wireless Charging Method

Abstract

The invention discloses a wireless charging method based on magnetic resonance. By adjusting the lattice constant of the metasurface and according to the preset frequency parameters, under the excitation of the excitation source, the metasurface works in the bound state mode of the continuum, thereby making the supersurface The quality factor of the surface is further improved on the basis of a single resonator, which can greatly enhance the magnetic field strength of the metasurface, increase the magnetic flux passing through the receiving terminal, and improve the efficiency and charging distance of wireless charging; in addition, by adjusting the metasurface The lattice constant can control the coupling between the metasurface dielectric pillar units, so as to flexibly adjust the magnetic field distribution of the metasurface; at the same time, after adjusting the lattice constant, the magnetic field strength of the metasurface can be gradually diverged to achieve a more uniform magnetic field distribution. In this way, multiple receiving terminals with high efficiency can be charged.

Description

Technical field [0001] The present invention relates to wireless charging technology, and more particularly relates to a wireless charging method based on magnetic resonance. Background technique [0002] Bound state to continuum resonance showed no attenuation, a wave phenomenon which is essentially, been shown to occur in many different areas of physics fluctuations, including acoustic, nano-photonics and microwave. Meanwhile, the continuous area may be considered as bound states with zero resonance line width, i.e., bound states is a continuum resonance mode. Further, it is desirable continuum bound state mode having a quality factor of infinity, in reality, in a continuous working surface area bound by the super-states also have ultra-high mode quality factor. [0003] Working in the area bound by the continuous transmission performance over the surface of the WPT art there is a link-state mode, WPT technology is wireless power transmission technology, the wireless power tran...

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Problems solved by technology

[0004] However, the charging distance of the magnetic induction coupling charging method at this stage is limited, and its actual charging distance is on the order of millimeters. Although it can realize multi-terminal wireless charging, there are still problems such as mutual influence of receiving terminals and impedance matching, which leads to inconsistent charging efficiency of each receiving terminal.

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