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Wireless power transmission device

A technology of wireless energy transmission and transmitting coils, which is applied in the direction of circuit devices, circuits, inductors, etc., can solve the problems of poor coupling coefficients between transmitting coils and receiving coils, and achieve the effect of improving coupling coefficients, simple structure, and easy implementation

Inactive Publication Date: 2020-05-26
CRM ICBG (WUXI) CO LTD
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The selection of the transmitter coil and the receiver coil is generally selected from the existing coils based on the inductance value determined by the system design. The selected existing coils can often meet the basic functional performance requirements of the system, but are not the coils with the best performance. , which means that the coupling coefficient between the transmitting coil and the receiving coil is poor

Method used

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  • Wireless power transmission device
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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0028] The wireless power transmission device includes a transmitting coil and a receiving coil coupled to each other, wherein the transmitting coil is a sparsely wound structure, and the gap between adjacent turns in the transmitting coil is not less than 1mm, which is used to improve The coupling coefficient between the transmitting coil and the receiving coil. The size of the receiving coil is not larger than that of the transmitting coil. In this embodiment, the size ratio of the transmitting coil to the receiving coil is 4:1.

[0029] The size of the pitch of the transmitting coil is proportional to the number of turns of the transmitting coil, and the number of turns increases with the increase of the pitch.

[0030] In this embodiment, the pitch of the transmittin...

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Abstract

The invention relates to a wireless power transmission device. The wireless power transmission device comprises a transmitting coil and a receiving coil which are coupled with each other, wherein thetransmitting coil is of a sparsely-wound structure, and a gap between adjacent turns in the transmitting coil is not less than 1mm and used for improving a coupling coefficient between the transmitting coil and the receiving coil. According to the wireless power transmission device adopting the structure, the coupling coefficient between the transmitting coil and the receiving coil can be effectively improved, so that the transmission efficiency of the whole wireless power transmission system is improved. The device is simple in structure, easy to realize and relatively good in applicability.

Description

technical field [0001] The present invention relates to the field of power transmission, in particular to the technical field of wireless power transmission, and specifically refers to a wireless power transmission device. Background technique [0002] With the development of science and technology, wireless power transmission technology has been more and more widely used, and the coupling ability of the coupling coil has an important impact on wireless power transmission. The design of the coupling coil has become a key point to improve the efficiency of wireless power transmission . In the prior art, double-coils are connected in series and parallel to improve the coupling capability of the coils. The double-coil coil structure is as follows: figure 1 As shown, in this kind of double-coil coil structure, a magnetic field will be generated between the two coils to cause cancellation and shielding, which will eventually lead to a reduction in the mutual inductance between t...

Claims

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Application Information

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IPC IPC(8): H02J50/10H01F27/00H01F27/28H01F38/14
CPCH01F27/006H01F27/2823H01F38/14H02J50/10
Inventor 王珂吴建新高涛
Owner CRM ICBG (WUXI) CO LTD
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