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A wireless power transmission coil with impedance matching function

A wireless power transmission and impedance matching technology, which is applied in the direction of transformer/inductor coil/winding/connection, circuit, inductor, etc., can solve the problems of improving and unfavorable wireless power transmission efficiency, matching and adjustment methods, and achieves The effect of flexible matching, improved efficiency, and simple adjustment method

Inactive Publication Date: 2020-09-22
TIANJIN POLYTECHNIC UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the resonant coil mostly adopts two-terminal feeding mode, and its impedance remains unchanged at a fixed frequency. Impedance matching needs to be realized by other means, such as adding an additional impedance matching network or adding an impedance matching coil, and the complexity of matching and adjustment methods High, which is not conducive to the improvement of the work efficiency of wireless power transmission

Method used

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  • A wireless power transmission coil with impedance matching function
  • A wireless power transmission coil with impedance matching function

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] Such as figure 1 As shown, a novel wireless power transmission coil with impedance matching function of the present invention includes: a helical coil 1 , a coaxial line input end 2 , a matching rod 3 , and a short-circuit ring 4 . The helical coil 1 has a cylindrical helical structure as a whole, and the coaxial line input end 2 is a feeding end of high-frequency electric energy, which is located at the center of the helical coil;

[0022] The radius of the helical coil is 30cm, and it is made of a copper tube with an outer diameter of 8mm and an inner diameter of 6mm, and the total length of the copper tube is half the wavelength corresponding to the working frequency.

[0023...

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Abstract

The invention discloses a wireless power transmission coil with an impedance matching function, belongs to the range of wireless electric energy transfer and conversion, can realize match of the output impedance or the load impedance of a wireless power transmission power supply to efficiently transmit wireless electric energy, and has a wide application prospect. The wireless power transmission coil solves the problem that the impedance of a conventional wireless power transmission coil cannot be adjusted, and the input impedance of the coil can be flexibly adjusted. The wireless power transmission coil primarily comprises a spiral coil (1), a coaxial input end (2), a matching rod (3) and a short-circuit ring (4). The wireless power transmission coil can serve as an emitting coil or a receiving coil in a wireless power transmission system, and has the advantages of being adjustable in input impedance, flexible to match, simple to operate and the like.

Description

technical field [0001] The invention belongs to the field of wireless power transmission and conversion, is mainly applied in a magnetic resonance wireless power transmission system, and relates to a resonant coil for wireless power transmission with an impedance matching function. Background technique [0002] The application of wireless power transmission technology expands the method of power transmission and reduces the dependence on wired power supply to a certain extent, thereby avoiding the safety problems of traditional wire power supply in some special occasions, such as mines and seabeds. , with higher flexibility and security. As one of the basic methods of wireless power transmission, magnetic resonance coupled wireless power transmission technology was first proposed by researchers at the Massachusetts Institute of Technology in 2007. Due to the obvious advantages of this technology in transmission efficiency, transmission power and transmission distance, it has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H01F38/14H01F27/28H01F27/29
CPCH01F27/2823H01F27/29H01F38/14H02J50/12
Inventor 张献孟浩王朝晖金耀倪雪晶王杰高妍白雪宁
Owner TIANJIN POLYTECHNIC UNIV