Coils, Wireless Power Transmitters and Receivers, Near Field Communicators and Electronics

Abstract

The invention discloses a coil device, a wireless power transmitter and receiver, a near field communicator and electronic equipment, comprising: a board; a first coil pattern, the first coil pattern includes N first coil conductive patterns; and a second The coil pattern, the second coil pattern includes M second coil conductive patterns; N≥2, M≥2; the end area of ​​the first coil conductive pattern is electrically connected to the end area of ​​the second coil conductive pattern; along the inner side of the coil device In the direction to the outside, the end region where the i-th first coil conductive pattern exists is only electrically connected to the end region of the j-th second coil conductive pattern; the end region where there is the ith first coil conductive pattern is only electrically connected to the The end regions of the conductive pattern of the j'th second coil are electrically connected; 1≤i<i'≤N, 1≤j'<j≤M. The coil device of this kind can further improve the quality factor of the coil device and improve the transmission efficiency of the coil device on the basis of the existing coil structure.

Description

technical field [0001] The invention belongs to the field of coil structure design, and in particular relates to a coil device, a wireless power transmitter and receiver, a near-field communicator and electronic equipment. Background technique [0002] Inductance coils are more and more commonly used in electronic equipment, especially in some new applications, such as NFC (Near Field Communication) and wireless charging. [0003] For high-frequency coils, due to the high operating frequency, the current is often concentrated and distributed on the surface of the conductor, which is called the skin effect. The skin effect is the root cause of the excessive coil equivalent resistance. [0004] Refer to the accompanying drawings in the manual figure 1 as well as figure 2 , Existing coils mostly use multi-strand multi-layer series connection, divide the line width or thickness into multiple parts, so that the current can be evenly distributed inside the conductor, suppress t...

AI Technical Summary

Problems solved by technology

[0005] However, the improvement of the quality factor of the existing multi-strand multi-layer coil is limited. In order to further improve the transmission efficiency of the coil, it is necessary to find a new coil structure that improves the coil quality factor.

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