Wireless power transmission coil, coil assembly and electronic device

Abstract

Disclosed is a wireless power transmission coil, a coil assembly and an electronic device. By dividing the continuously wound wireless power transmission coil into a first section and a second section that are arranged along a circumferential direction. Different winding method are used in the first section and the second section. So the first section has a first maximum thickness. The second section has a second maximum thickness. The first section has a first width from the outer edge to the inner edge. The second section has a second width from the outer edge to the inner edge. The second maximum thickness is greater than the first maximum thickness and the second width is less than the first width. In this way, the size of the wireless power transmission coil is adjusted to fit the shape of the space in the electronic device, and the area of the wireless power transmission coil is not reduced too much, so the charging efficiency of wireless charging is ensured.

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