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Enhanced transmitting coil applicable to wireless power supply system of electric automobile

A technology of power supply system and transmitting coil, which is applied in the direction of electromagnetic wave system, transformer/inductor coil/winding/connection, circuit, etc., to achieve the effect of improving the transmission distance and transmission efficiency, enhancing the emission electromagnetic field, and enhancing the transmission magnetic field

Inactive Publication Date: 2015-12-02
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the transmission efficiency of the electric vehicle wireless power supply system needs to be further improved

Method used

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  • Enhanced transmitting coil applicable to wireless power supply system of electric automobile
  • Enhanced transmitting coil applicable to wireless power supply system of electric automobile

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Embodiment Construction

[0014] The transmitting coil of the present invention will be further described below through embodiments and in conjunction with the accompanying drawings.

[0015] The invention is an enhanced unidirectional radiation electromagnetic field transmitting coil. The transmitting coil is arranged with several layers of concentric spiral planar coils sequentially from the inside to the outside. The spiral planar coil is covered with an electromagnetic shielding radiation layer; the innermost layer There is a magnetic core in the center of the helical planar coil, and the helical planar coils of the adjacent layers are respectively wound in opposite directions with insulated wires, that is, one of the two helical planar coils of the adjacent layer is wound clockwise from the inside to the outside. , and the other helical planar coil is wound counterclockwise from the inside to the outside; the head ends of all the helical planar coils are connected, and the tail ends of all the heli...

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Abstract

The invention discloses an enhanced transmitting coil applicable to a power supply system of an electric automobile. The enhanced transmitting coil comprises a plurality of layers of concentrical spiral planar coils which are sequentially arranged from inside to outside, wherein the spiral planar coils are covered with an electromagnetic radiation shielding layer. A magnetic core is arranged at the center of the innermost-layer spiral planar coils and is the same as the spiral planar coils in shape. The adjacent layers of spiral planar coils are respectively formed by winding insulation leads in the opposite directions. The head ends of all spiral planar coils are connected, and the tail ends of all spiral planar coils are connected. The adjacent layers of spiral planar coils are reversely connected in parallel and are opposite in current direction during working so that a transmitting electromagnetic field can be enhanced. The electromagnetic radiation shielding layer can be used for constraining one-way transmission of the magnetic field produced by the transmitting coils and plays the combined effect with the spiral planar coils reversely connected in parallel, the transmitting magnetic field of the transmitting coils can be enhanced, accordingly a transmission distance is increased, and transmission efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of transmitting coil design for a wireless power supply system, and in particular relates to an enhanced transmitting coil suitable for an electric vehicle power supply system. Background technique [0002] Electric vehicle wireless power supply technology can be divided into two types: the first is inductive magnetic coupling wireless power supply technology, which uses the principle of electromagnetic induction to supply energy to electric vehicles through magnetic coupling. The effective transmission distance of energy is short, and electric vehicles need to be parked. Alignment with the charging coil at the proper position enables energy transmission, suitable for applications such as charging stations like traditional gas stations. The second is the resonant magnetic coupling wireless power supply technology, which transmits energy through the resonance of the inductor on the resonator and the distribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/14H01F27/28H02J17/00
Inventor 王军华代中余
Owner WUHAN UNIV
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