Composite magnetic coupling resonance type wireless power transmission coil

A resonant radio, transmission coil technology, applied in the direction of transformer/inductor coil/winding/connection, circuit, inductor, etc., can solve the problems of limiting the use range of magnetic coupling resonant wireless power transmission technology and occupying large equipment space. , to achieve the effect of good conductivity, increase loss, reduce mutual inductance and coupling coefficient

Pending Publication Date: 2019-07-12
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the application scenarios of miniaturized devices such as mobile terminals and implanted devices, the magnetically coupled inductive wireless power transfer (MCI-WPT) system with a four-coil structure compared with a double-coil structure has two additional coils, As a result, the equipment space is too large, which seriously limits the application range of magnetic coupling resonant wireless power transmission technology.

Method used

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  • Composite magnetic coupling resonance type wireless power transmission coil
  • Composite magnetic coupling resonance type wireless power transmission coil
  • Composite magnetic coupling resonance type wireless power transmission coil

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1, a composite magnetic coupling resonant wireless power transmission coil described in the present invention is a solenoid coil (such as image 3 ), the cross-section of the transmission line used for winding the coil is a multi-layered concentric circle, such as figure 1 As shown: it includes a solid copper conductor 1 , a first insulating layer 2 , a copper conductive layer 3 , a conductive layer 4 of high-conductivity material made of silver, and a second insulating layer 5 . The resonant frequency of the magnetically coupled resonant wireless power transfer (MCR-WPT) system designed in this embodiment is 1 MHz, and the thickness of the corresponding copper conductive layer 3 is 0.065 mm. The solid copper conductor 1 is a copper wire with a wire diameter of 1.8mm, the first insulating layer 2 is coated on the outer surface of the solid copper conductor 1, and the copper conductive layer 3 is plated on the On the outer surface of the first insulating laye...

Embodiment 2

[0030] Embodiment 2, a composite magnetic coupling resonant wireless power transmission coil described in the present invention is a planar spiral coil (such as Figure 4 ), the cross-section of the transmission line used for winding the coil is a multi-layered concentric circle, such as figure 1 As shown: it includes a solid copper conductor 1 , a first insulating layer 2 , a copper conductive layer 3 , a conductive layer 4 of high-conductivity material made of silver, and a second insulating layer 5 . The resonant frequency of the magnetically coupled resonant wireless power transfer (MCR-WPT) system designed in this embodiment is 1 MHz, and the thickness of the thin wall of the corresponding copper conductive layer is 0.065 mm. The solid copper conductor 1 is a copper wire with a wire diameter of 1.8mm, the first insulating layer 2 is coated on the outer surface of the solid copper conductor 1, and the copper conductive layer 3 is plated on the On the outer surface of the ...

Embodiment 3

[0031] Embodiment 3, a composite magnetic coupling resonant wireless power transmission coil described in the present invention is a planar rectangular coil (such as Figure 5 ), the cross-section of the transmission line used for winding the coil is a multilayer concentric rectangle, such as figure 2 As shown: it includes a solid copper conductor 1 , a first insulating layer 2 , a copper conductive layer 3 , a conductive layer 4 of high-conductivity material made of silver, and a second insulating layer 5 . The resonant frequency of the magnetically coupled resonant wireless power transfer (MCR-WPT) system designed in this embodiment is 1 MHz, and the thickness of the corresponding copper conductive layer 3 is 0.065 mm. The solid copper conductor 1 is a copper conductor with a length of 1.8mm and a width of 0.8mm, the first insulating layer 2 is coated on the outer surface of the solid copper conductor 1, and the copper conductive layer 3 uses the NCVM non-conductive electro...

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Abstract

The invention relates to a composite magnetic coupling resonance type wireless power transmission coil. The cross section of a transmission line adopted for winding a transmission coil is a layered structure which is formed by compounding a solid copper conductor, a first insulating layer, a copper conducting layer, a high-conductivity material conducting layer and a second insulating layer; the solid copper conductor forms an excitation coil or a load coil of the composite magnetic coupling resonance type wireless power transmission coil, and the copper conducting layer and the high-conductivity material conducting layer commonly form a transmitting coil or a receiving coil of the composite magnetic coupling resonance type wireless power transmission coil, so that the excitation coil andthe transmitting coil or the load coil and the receiving coil are compounded into a whole. The internal resistance, caused due to the skin effect, of the transmitting coil and the receiving coil in ahigh-frequency condition can be reduced in a four-coil magnetic coupling resonance type wireless power transmission system, the quality factor of the coils can be improved and high-efficiency transmission of power is achieved so as to provided convenience for miniature and miniaturized devices using the four-coil magnetic coupling resonant wireless power transmission technology.

Description

technical field [0001] The invention belongs to the field of wireless power transmission, and in particular relates to a composite magnetic coupling resonant wireless power transmission coil. Background technique [0002] With the development of economy and society, electric energy plays an increasingly important role in people's life. Traditional power transmission often relies on a huge transmission network. Since the transmission lines are basically directly exposed to the open air, on the one hand, it brings a series of problems such as frequent accidents and difficult maintenance, and also causes high construction costs, high manpower and material resources. question. With the advancement of science and technology, more and more electrical devices, such as implanted, underwater devices and other equipment with special working environments, have an increasingly urgent demand for wireless power transmission. Based on the huge commercial prospects, people have been workin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J5/00H01B7/00H01B7/02H01F27/28H01F38/14
CPCH01B7/0009H01B7/0216H01F27/2823H01F38/14H01F2027/2833H02J5/005H02J50/12
Inventor 程琳李平
Owner LANZHOU UNIVERSITY
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