Magnetic coupling resonant-type wireless power transmitting bowl-shaped primary coil

A resonant radio and primary coil technology, applied in the direction of circuits, inductors, collectors, etc., can solve the problem of narrow transmission range, achieve good voltage transmission and distance transmission characteristics, improve voltage transmission characteristics and distance transmission characteristics Effect

Inactive Publication Date: 2017-10-20
ZHEJIANG UNIV
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  • Claims
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Problems solved by technology

[0006] Aiming at the problem that the existing magnetically coupled resonant wireless power transmission range is very narrow, the present invention provides a magnetically coupled resonant wireless power transmission bowl-shaped primary coil, which utilizes the interaction of the magnetic field lines of the bowl-shaped coil in space, A 3D bowl-shaped coil is designed, so that while ensuring a long transmission distance, the expansion and uniformity of the secondary coil in the same plane as the primary coil are improved at the same time

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  • Magnetic coupling resonant-type wireless power transmitting bowl-shaped primary coil
  • Magnetic coupling resonant-type wireless power transmitting bowl-shaped primary coil
  • Magnetic coupling resonant-type wireless power transmitting bowl-shaped primary coil

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Embodiment Construction

[0017] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 and figure 2 As shown, the magnetically coupled resonant wireless power transmission bowl-shaped primary coil of the present invention includes 7 identical planar circular coil groups stacked to form a bowl-shaped three-dimensional structure, a circular coil group is placed flat in the center, and 6 circular coil groups The coil evenly surrounds the central coil group, and the angle between each surrounding coil group and the central coil group is 60 degrees, each surrounding coil group overlaps with the bottom of the central coil group, and 7 identical planar circular coil groups are connected in series , each planar coil group is wound clockwise and after winding, the directions of the magnetic induction lines formed by the coi...

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Abstract

The invention discloses a magnetic coupling resonant-type wireless power transmitting bowl-shaped primary coil. Seven identical planar circular coil groups are in lap winding to form a bowl-shaped three-dimensional structure; the seven identical planar circular coil groups are in mutual serial connection; each planar circular coil group is in clockwise winding, and after winding, directions of magnetic induction lines formed by coil current all face the same side. According to the bowl-shaped coil, in a condition of a long transmission distance of a charging platform, the voltage transmission characteristics and the distance transmission characteristics are greatly improved; while a bowl-shaped transmitting coil keeps various advantages of wireless charging, improvement of the voltage transmission characteristics and the distance transmission characteristics provides better user experience for actual application of later small-power wireless charging; and through actual measurement, the voltage transmission characteristics and the distance transmission characteristics of the 3D bowl-shaped coil are obviously better than existing other schemes.

Description

technical field [0001] The invention belongs to the technical field of wireless power supply, and in particular relates to a magnetic coupling resonant wireless power transmission bowl-shaped primary coil. Background technique [0002] Wireless power transmission technology solves the defect of traditional wire direct contact power supply. It is an effective and safe power transmission method. Therefore, it was selected as one of the top ten scientific research directions in the future by the American "Technology Review" magazine, and the electromagnetic resonance method is a wireless power transmission method. An important principle in energy transmission technology. Through the existing research on the energy exchange of lossless oscillating systems at different operating frequencies, it is concluded that one of the necessary conditions for magnetically coupled resonant wireless power transfer technology is to keep the oscillating system with the same natural resonance fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J7/02H01F38/14
CPCH02J50/12H01F38/14H02J7/025
Inventor 卫璇邬明洲戴悦马皓
Owner ZHEJIANG UNIV
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