Structure of planar magnetic core of wireless power supply coil
A technology of wireless power supply and coil plane, applied in the direction of circuits, inductors, electrical components, etc., can solve the problems of magnetic core saturation, inability to transmit efficiently, and inability to guarantee the coupling of wireless power supply coils, etc., to improve the saturation value of the magnetic core , Avoid core saturation and ensure stability
Active Publication Date: 2019-07-30
NANJING UNIV OF POSTS & TELECOMM
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[0003] The purpose of the present invention is to provide a wireless power supply coil to solve the problems in the prior art that the magnetic core of the wireless power supply coil is saturated under the condition of high excitation current and the coupling between the wireless power supply coils cannot be guaranteed, resulting in the inability to transmit efficiently. The structure of the planar magnetic core can realize the free combination of magnetic cores with different permeability; the specific technical scheme is as follows:
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[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0015] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be unders...
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The invention discloses a structure of a planar magnetic core of a wireless power supply coil. The structure comprises the planar magnetic core, a central magnetic column and the wireless power supplycoil, wherein the central magnetic column is arranged at the axis position of the wireless power supply coil; the whole planar magnetic core is uniformly arranged right below the wireless power supply coil in a surrounding manner by taking the central magnetic column as a circle center; the planar magnetic core consists of a high-magnetic conductivity magnetic core and a low-magnetic conductivitymagnetic core; the low-magnetic conductivity magnetic core is arranged on the high-magnetic conductivity magnetic core; the central magnetic column consists of an inside magnetic core and an outsidemagnetic core; the outside magnetic core is arranged to be close to the vicinity of the wireless power supply coil for improving the coupling coefficient of the wireless power supply coil; and the inside magnetic core is arranged to be far away from the vicinity of the wireless power supply coil for enhancing the current saturation of the wireless power supply coil. The structure is capable of avoiding the magnetic core saturation of the wireless power supply coil under high excitation current conditions, and realizing high-efficiency wireless transmission.
Description
technical field [0001] The invention belongs to the technical field of wireless power supply, in particular to the design of a planar magnetic core of a wireless power supply coil, and in particular to the structure of a planar magnetic core of a wireless power supply coil. Background technique [0002] With the advancement of technology, wireless power supply technology is becoming more and more popular. Magnetic cores such as ferrite are widely used in wireless power supply coils to improve the coupling efficiency of wireless power supply systems. However, due to the high working current of the wireless power supply coil, a single magnetic core is difficult to ensure the optimum of the system, which affects the stability and transmission efficiency of the system. The stability of the inductance of the wireless power transmission coil is directly related to the stability of the system coupling. Therefore, it is of great significance to design a wireless power supply coil w...
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IPC IPC(8): H01F38/14
CPCH01F38/14
Inventor 周岩钱思尧田家良
Owner NANJING UNIV OF POSTS & TELECOMM