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High-efficiency wireless charging method

A wireless charging and high-efficiency technology, applied in current collectors, electric vehicles, electrical components, etc., can solve the problems of limited charging distance, mutual influence impedance matching of receiving terminals, inconsistent charging efficiency of receiving terminals, etc., to achieve uniform magnetic field distribution, improve Efficiency and charging distance, effect of enhanced magnetic field strength

Active Publication Date: 2020-08-04
JINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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Embodiment Construction

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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Abstract

The invention discloses a high-efficiency wireless charging method. The lattice constant of a metasurface is adjusted, the metasurface is excited by an excitation source to work in a continuous regionbound state mode according to a preset frequency parameter, further the quality factor of the metasurface is further improved on the basis of a single resonator, the magnetic field intensity of the metasurface can be greatly enhanced, the magnetic flux passing through the receiving terminal is increased, and the wireless charging efficiency and the charging distance are improved; besides, by adjusting the lattice constant of the metasurface, coupling between metasurface dielectric cylinder units can be controlled, and therefore magnetic field distribution of the metasurface can be flexibly adjusted and controlled; meanwhile, after the lattice constant is adjusted, the magnetic field intensity of the metasurface can be gradually diffused, uniform magnetic field distribution is achieved, and therefore multiple receiving terminals can be charged efficiently.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a high-efficiency wireless charging method. Background technique [0002] Continuum bound states appear as non-decaying resonances, which are essentially a wave phenomenon that has been shown to occur in many different areas of wave physics, including acoustics, microwaves, and nanophotonics. Meanwhile, the continuum bound state can be regarded as a resonance with zero linewidth, that is, the continuum bound state is a kind of resonance mode. Furthermore, the ideal continuum-bound state mode has an infinite quality factor, but in practice, the metasurface working in the continuum-bound state mode also has an ultra-high quality factor. [0003] The metasurface working in the continuum bound state mode is related to the transmission performance of WPT technology. WPT technology refers to wireless power transfer technology, and wireless power transfer technology is also c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/00H02J50/40H02J50/12H02J7/00
CPCH02J7/00H02J7/0013H02J50/00H02J50/12H02J50/40
Inventor 徐毅谢耀祖
Owner JINAN UNIVERSITY
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