Sleeve-to-embedded electric field coupling mechanism and its ec-wpt system

Abstract

The invention provides a sleeve oppositely-embedded type electric field coupling mechanism and an EC-WPT system formed by the same. The device comprises an outer sleeve and an inner sleeve, wherein the outer sleeve comprises a first metal ring cylindrical surface, a second metal ring cylindrical surface sleeved in a lower half section of the first metal ring cylindrical surface, and a first insulating dielectric layer filled between the first metal ring cylindrical surface and the second metal ring cylindrical surface, the inner sleeve comprises a third metal ring cylindrical surface, a fourthmetal ring cylindrical surface arranged outside the upper half section of the third metal ring cylindrical surface in a sleeving manner, and a second insulating dielectric layer filled between the third metal ring cylindrical surface and the fourth metal ring cylindrical surface, the second metal ring cylindrical surface and the fourth metal ring cylindrical surface are the same in length, and end faces of the second metal ring cylindrical surface and the fourth metal ring cylindrical surface are opposite. The EC-WPT system is advantaged in that the structure is compact, the negative couplingcoefficient is achieved, the EC-WPT system constructed is quite suitable for wireless energy transmission of a rotating mechanism, the electric leakage field suppression effect is good, the system analysis process is simple, and parameters are easy to design.

Description

technical field [0001] The invention relates to wireless power transmission technology, in particular to a sleeve-to-embedded electric field coupling mechanism and an EC-WPT system formed thereof. Background technique [0002] Electric-Field Coupled Wireless Power Transfer (EC-WPT) technology is an emerging technology that uses the alternating electric field between the metal plates as the energy transmission medium. The electric field coupling mechanism is simple, thin, and low in cost. The shape is variable; in the working state, most of the electric flux of the electric field coupling mechanism is distributed between the electrodes, and the electromagnetic interference to the surrounding environment is very small; when there is a metal conductor between or around the electric field coupling mechanism, it will not cause the conductor Eddy current loss occurs. At present, many experts and scholars have conducted research on the application of EC-WPT technology in electric ...

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Problems solved by technology

[0006] However, the stacked coupling mechanism can also have various coupling forms. The existing literature only studies the modeling, coupling characteristics and safety of the flat coupling mechanism, and the two receiving plates of the flat coupling mechanism used It is completely symmetrical to the emitter plate, and does not take into account the inherent changes in the characteristics of the coupling mechanism when the plate is in different positions

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