Wireless charging system coupling coil and preparation method thereof

Abstract

The invention provides a coupling coil of a wireless charging system and a preparation method of the coupling coil. The method comprises the steps of (S1) determining a coupling coefficient of the coupling coil; (2) determining an inductance value of the coupling coil and working current of the coupling coil according to the coupling coefficient; (S3) determining the Litz wire specification according to the working current of the coupling coil; and (S4) determining the number of turns of the coupling coil according to the inductance value of the coupling coil. The complicated work of designing the coupling coil of the wireless charging system is decomposed into a few of steps; the overall design process is clear and distinct; the operability is high; through the scheme designed by the invention, the technical indexes can be met; and relatively high power transmission efficiency can be achieved through selecting an optimal design scheme.

Description

technical field [0001] The present invention relates to wireless charging technology, in particular to a wireless charging system coupling coil and a preparation method thereof. Background technique [0002] Due to its characteristics of safety, convenience and environmental protection, wireless power transmission technology has been paid more and more attention in people's life. This technology involves power electronic circuit, coil electromagnetic design, automatic control, communication protocol and many other aspects. At present, the research on wireless charging mainly focuses on the wireless charging circuit topology, control strategy and coil structure, and there are few studies on the design method of the coupling coil of the wireless charging system. However, as the most important component in the wireless charging system, the coupling coil is not only closely related to the power and efficiency of electric energy transmission, but also determines the stability an...

AI Technical Summary

Problems solved by technology

However, this design method cannot realize the optimal selection of parameters, and the coil wound according to experience may not be able to match the working state of the system, resulting in low power transmission efficiency, and may require multiple adjustments, resulting in labor costs and time costs for coil winding increase, affecting the system development process

A few foreign literatures have studied the parameter optimization design process of the wireless charging system, but the design method only involves the selection of the inductance, and does not involve the determination method of the Litz wire structure and the number of turns, nor does it include the intuitive design requirements such as coil size and distance In the design process, so the design process is incomplete and divorced from actual production

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