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A magnetic coupling wireless energy transmission method and device based on magnetic fluid

A wireless energy transmission and magnetic fluid technology, applied in the electromagnetic field, can solve the problems of increased loop reluctance, low power transmission capacity and efficiency, and achieve the effects of increasing mutual inductance, high power and efficient transmission, and reducing weight.

Active Publication Date: 2022-03-11
CHONGQING UNIV
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Problems solved by technology

According to the magnetic circuit theory, when there is a very small air gap in the complete magnetic circuit, the reluctance of the entire circuit will increase rapidly, and most of the magnetic field energy will be dispersed in the air, so the power transmission capacity and efficiency are low

Method used

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  • A magnetic coupling wireless energy transmission method and device based on magnetic fluid
  • A magnetic coupling wireless energy transmission method and device based on magnetic fluid
  • A magnetic coupling wireless energy transmission method and device based on magnetic fluid

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Ferrofluids combine the fluidity of liquids with the permeability of ferromagnetic materials. It can be seen from the transformer theory that if there is a very small air gap in the magnetic circuit, the reluctance of the entire magnetic circuit will increase sharply, resulting in a decrease in the coupling performance between the coils. The fluidity of the magnetic fluid enables it to densely fill the air between the coils. At the same time, its high magnetic permeability can effectively increase the magnetic permeability between the coils, thereby increasing the coupling strength of the magnetic field between the coils, thereby enhancing the energy transmission capacity. .

[0044] refer to figure 1 (a) to (c), the present invention proposes a magnetic coupling energy transfer device based on magnetic fluid, which includes a cyli...

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Abstract

The invention relates to a magnetic coupling wireless energy transmission method and device based on magnetic fluid, and belongs to the field of electromagnetic technology. This method utilizes the dual characteristics of fluidity and permeability of magnetic fluid, and uses magnetic fluid as an energy transfer medium to replace the air medium between the primary coil and the secondary coil, so as to reduce the reluctance of the coupled magnetic circuit and improve the power transfer capacity and efficiency. After a certain high-frequency alternating current is passed through the primary coil, an induced electromotive force will be generated in the secondary coil. The cylindrical container is used to hold the magnetic fluid that replaces the air medium, and the coil support structure is used to adjust and fix the spatial position of the coil. , the ferrofluid medium has a higher magnetic permeability relative to air. The invention enables the wireless energy transmission device to effectively reduce the size and weight, and realize high-capacity and high-efficiency transmission of power.

Description

technical field [0001] The invention belongs to the field of electromagnetic technology, and relates to a magnetic coupling wireless energy transmission method and device based on magnetic fluid. Background technique [0002] At present, the research on wireless charging has encountered many bottlenecks, and the main direction of research is to improve the transmission capacity and efficiency of power. Whether it is inductive charging or magnetic resonance charging, the transmission medium of the magnetic field between the coils is air. According to the magnetic circuit theory, when there is a very small air gap in the complete magnetic circuit, the reluctance of the entire circuit will increase rapidly, and most of the magnetic field energy will be dispersed in the air, so the power transmission capacity and efficiency are low. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a magnetic coupling wireless energy transf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/00H02J50/10
CPCH02J50/00H02J50/10
Inventor 何为吴宇奇张哲罗智明刘小虎
Owner CHONGQING UNIV
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