Design method of novel wireless electric energy transmission coil shielding structure
A technology of wireless power transmission and shielding structure, applied in the direction of preventing/reducing unwanted electrical/magnetic effects, circuits, electrical components, etc., can solve the problems of underutilization of magnetic conductive materials, cumbersome shielding structure, etc., to reduce the cost , the effect of reducing dosage and reducing weight
Inactive Publication Date: 2018-09-04
WUHAN UNIV +1
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Problems solved by technology
This shield structure is bulky and does not take full advantage of the magnetically permeable material
Method used
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Embodiment Construction
[0032] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0033] This embodiment is achieved through the following technical solutions:
[0034] Step 1: According to coil structure and parameters, power supply parameters, including coil wire radius, coil starting radius, coil outer edge radius, coil wire spacing, coil wire material, coil turns, coil shape, input current, input frequency, input Voltage, input power, calculate the flux linkage of the coil;
[0035] Step 2: According to the calculated coil flux linkage, draw the relationship curve between the distance from the center of the circle and the thickness, and select the shielding material with appropriate characteristics, including the relative magnetic permeability of the shielding material, the density of the shielding material, the price of the shielding material, the ductility of the shielding material, and the shielding material heat resistance;...
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The invention relates to the technical field of wireless electric energy transmission, and specifically relates to a design method of novel wireless electric energy transmission coil shielding structure. The design method calculates the flux linkage of the coil according to the structure and parameters of the coil and the power supply parameters, draws a relation curve of the distance from the center of a circle and the thickness, selects shielding materials with suitable characteristics, determines the thickness of each part of the shielding structure, determines the section curve of the shielding structure, then according to the area equivalence principle, performs fan-shaped simplification on the shielding structure, and finally performs optimization of edge structure on the shielding structure after fan-shaped simplification to produce an optimal shielding structure. The design method of novel wireless electric energy transmission coil shielding structure can restrain the magneticfield direction while reducing the magnetic field leakage, so as to enable magnetic fields as many as possible to participate in the wireless electric energy transmission process, thus reducing the amount of the high magnetic permeability material, reducing the weight of the magnetic gathering shielding structure, reducing the cost of the magnetic shielding structure, and being conducive to the wide application of the wireless electric energy transmission technology.
Description
technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to a design method of a novel wireless power transmission coil shielding structure. Background technique [0002] At present, coils commonly used in wireless power transmission technology are mainly divided into two structures, one is a coil with a spiral structure, and the other is a coil with a spiral structure. Spiral structure coils are mainly used in wireless power transmission systems with long transmission distances, and spiral structure coils are mainly used in wireless power transmission systems with relatively short distances. Compared with the helical structure coil, the volume of the spiral structure coil is reduced when the same electric energy is transmitted, but the magnetic gathering effect is weak, the magnetic field radiated outward is large, and the transmission efficiency is low. In order to improve the transmission efficiency, en...
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Patent Timeline
Login to View More IPC IPC(8): H02J50/10H02J50/70H01F27/36H01F41/00
CPCH01F27/36H01F41/00H02J50/10H02J50/70
Inventor 王军华代中余和远舰黄虹李逸达金磊方支剑
Owner WUHAN UNIV