Wireless electric energy transmission system and method based on double-layer two-way spiral coils

A wireless energy transmission, two-way spiral technology, applied in electromagnetic wave systems, electrical components, circuit devices, etc., can solve the problems of frequency splitting and low transmission efficiency, and achieve the effect of improving utilization efficiency, making full use of space resources

Inactive Publication Date: 2014-08-13
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0010] Technical problem: The purpose of the present invention is to propose a wireless power transmission system and method based on a double-layer bidirectional helical coil for the problem of low transmission efficiency due to frequency splitting during short-distance energy transmission of the wireless power transmission system

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  • Wireless electric energy transmission system and method based on double-layer two-way spiral coils
  • Wireless electric energy transmission system and method based on double-layer two-way spiral coils
  • Wireless electric energy transmission system and method based on double-layer two-way spiral coils

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Embodiment Construction

[0041] In order to make the content and advantages of the technical solution of the present invention more clear, the wireless power transmission system and method based on the double-layer bidirectional helical coil of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0042] The implementation process of the wireless power transmission system and method based on the double-layer bidirectional helical coil of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] figure 1 It is an example diagram of the frequency splitting phenomenon of the magnetically coupled resonant wireless power transfer system.

[0044] Such as figure 1 As shown, the frequency splitting phenomenon is very common in magnetic coupling resonanc...

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Abstract

The invention discloses a wireless electric energy transmission system based on double-layer two-way spiral coils in the technical field of wireless electric energy transmission. The problem that in the close range energy transmission process of the wireless electric energy transmission system, the transmission efficiency of the system is low due to the influence of frequency splitting is mainly solved. Based on a magnetic coupling resonance wireless electric energy transmission system of the Massachusetts Institute of Technology, the double-layer two-way wound transmitting coils are designed, namely an inner layer coil with the same number and pitch of turns is wound in the opposite direction in the inner space of an original single-layer one-way wound transmitting coil, because the winding direction of the inner layer coil is opposite to that of the original coil, so that the intensity of the coupling coefficient is reduced, the influence on the transmission efficiency of the system of the frequency splitting in the close range energy transmission process is reduced, the wireless electric energy transmission system can break away from a frequency splitting area within a shorter distance to achieve the critical coupling state, and the energy transmission efficiency of the wireless electric energy transmission system working in the close range frequency splitting area is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and relates to a wireless power transmission system based on a double-layer bidirectional helical coil, in particular to a new design method of a transmitting coil in a wireless power transmission system, so as to reduce the frequency of short-distance energy transmission The impact of splitting on the transmission efficiency improves the short-distance energy transmission efficiency of the wireless power transmission system. Background technique [0002] Since Nikola Tesla proposed the theory of wireless power transfer a century ago, wireless power transfer has been a hot research topic. Experts at home and abroad have been conducting research on wireless power transmission for many years, but the progress of scientific research has been slow. In November 2006, at the Industrial Physics Forum of the American Physical Society, the Marin Soljacic research group of the Massachus...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/12
Inventor 田子建林越
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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