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A method and device for realizing wireless energy transmission based on a metal grid cavity structure

A metal grid and wireless energy transmission technology, which is applied in the fields of instruments, calculations, and electrical digital data processing, can solve problems such as practical application difficulties, cost issues, and large cavity size, and achieves less deformation, lower implementation difficulty, and work The effect of low frequency

Active Publication Date: 2022-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, this method has relatively high requirements for the device, and requires the resonant structure to have a high quality factor Q, and needs to build a closed metal cavity structure, and the cavity size is often large, which brings cost problems and is difficult to break away from. In the laboratory environment, it is difficult to apply in practice

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  • A method and device for realizing wireless energy transmission based on a metal grid cavity structure
  • A method and device for realizing wireless energy transmission based on a metal grid cavity structure
  • A method and device for realizing wireless energy transmission based on a metal grid cavity structure

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Embodiment Construction

[0041] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, so as to understand the features and advantages of the present invention more clearly.

[0042] This embodiment provides a method and device for realizing wireless energy transmission based on a metal grid cavity structure. The structural diagram of the device is shown in figure 1 shown. The system consists of a transmitter, a metal grid cavity and a receiver.

[0043] The transmitter adopts a linear probe antenna. When it is at a specific position in the metal grid cavity, the electromagnetic wave changing in the excitation cavity is reflected on the inner wall of the metal grid cavity structure to form a standing wave, and then forms an electromagnetic field mode, and then through the receiving The receiver coil in the receiver resonates with the electromagnetic field pattern to wirelessly transmit power to the receiver.

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Abstract

The invention discloses a method and a device for realizing wireless energy transmission based on a metal grid cavity structure, and belongs to the technical field of wireless energy transmission. The metal grid cavity structure of the present invention is based on the characteristic that the electromagnetic wave impenetrable size is much smaller than its wavelength, and when the grid size of the metal grid cavity is small, standing waves can be generated by excitation, thereby forming a field distribution of a specific electromagnetic field mode, and Combined with the wireless energy transmission method based on the quasi-static resonant cavity, the probe antenna is used to excite the electromagnetic field mode in the metal grid cavity, and the energy transmission is performed through the field distribution of the mode and the resonance of the coil in the receiving module. Based on the theory of electromagnetic shielding effect and standing wave formation, the present invention adopts a metal grid cavity structure instead of a closed metal cavity, which can not only effectively excite the electromagnetic field mode of the cavity itself for wireless energy transmission, but also solve the cost and application problems. Inconvenience.

Description

technical field [0001] The invention belongs to the technical field of wireless energy transmission, and in particular relates to a method and device for realizing wireless energy transmission based on a metal grid cavity structure. Background technique [0002] With the rapid development of electronic devices such as mobile phones, tablet computers, and smart bracelets, the traditional energy transmission method that uses power transmission cables to power equipment will bring a series of problems such as high cost, inconvenient portability, and complicated cable arrangement. Using wireless to transmit energy can solve these problems very well. Wireless Power Transfer (WPT) refers to the wireless transmission of energy from the power supply end to the load end. It does not require direct contact with metal electrodes, which can avoid the exposure of conductors and the generation of electric sparks. Compared with the traditional wired energy transmission method, wireless en...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/3308
Inventor 张巧利岳震赵德双
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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