Piezoelectric wireless energy transmission device based on magnetic coupling

A wireless energy transmission, wireless energy technology, applied in circuit devices, battery circuit devices, transportation and packaging, etc., can solve the problems of low energy transmission power and efficiency, low acoustic impedance matching, etc., to improve energy transmission efficiency and robustness. Rod, broaden the working bandwidth, enhance the effect of coupling efficiency

Pending Publication Date: 2022-05-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the air coupling method is commonly used in ultrasonic piezoelectric wireless energy transmission technology, because the solid acoustic impedance is , the air acoustic impedance is , the acoustic impedance matching degree of the two is low, so that the power and efficiency of energy transmission are extremely low

Method used

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  • Piezoelectric wireless energy transmission device based on magnetic coupling
  • Piezoelectric wireless energy transmission device based on magnetic coupling
  • Piezoelectric wireless energy transmission device based on magnetic coupling

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Embodiment Construction

[0036] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0037] It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These still belong to the protection scope of the present invention.

[0038] It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer "Respectively refer to the direction towards or away from the geometric center of the component, because the transmitting part and receiving part of the device are mirror symmetrical structures, they are exactly the same.

[0039] The e...

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PUM

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Abstract

The invention discloses a piezoelectric wireless energy transmission device based on magnetic coupling, which is used for non-contact energy transmission, and comprises a wireless energy transmitting end which is composed of a base, a piezoelectric cantilever beam, a permanent magnet, a power supply and an amplifying circuit, converts electric energy into mechanical energy by utilizing a piezoelectric effect, and transmits the mechanical energy to the piezoelectric cantilever beam; wireless energy transmission is carried out through magnetic coupling; the wireless energy receiving end is composed of a base, a piezoelectric cantilever beam, a permanent magnet, a rectifying circuit and a load, and the transmitted mechanical energy is converted into electric energy through the piezoelectric effect. The transmitting end and the receiving end are mutually coupled through the permanent magnet, the mechanical coupling effect of the transmitting end and the receiving end can be greatly enhanced by introducing the permanent magnet, the energy transmission power and efficiency are improved, the working bandwidth of the system can be widened, and the energy transmission efficiency is not limited by the frequency matching degree of the transmitting end and the receiving end.

Description

technical field [0001] The invention belongs to the field of wireless energy transmission, in particular to a piezoelectric wireless energy transmission device based on magnetic coupling. Background technique [0002] Today, with the rapid development of science and technology, with people's pursuit of wireless electronic equipment and a more beautiful appearance, and the requirements for charging safety under extreme conditions such as high temperature and underwater, it is necessary to avoid repeated charging for implantable biomedical equipment. The need to replace the battery, wireless energy transmission technology can get rid of the line to realize the portability of completely separating the electrical appliance from the power supply; the flexibility to avoid inapplicable interfaces and poor contact; the wide application range and the versatility of general standards; no need to connect to unknown cables Security, showing broad prospects for development. [0003] At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J7/02
CPCH02J50/12H02J7/02
Inventor 徐佳文逯航严如强
Owner SOUTHEAST UNIV
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