一种无线充电线圈组件

Abstract

本实用新型公开了一种无线充电线圈组件，包括磁片主体以及线圈，线圈包括在磁片主体的轴向上叠置的第一线圈层以及第二线圈层，第一线圈层包括第一接线端、多个绕磁片主体的轴线绕制的第一线圈段以及第一连接端，第二线圈层包括第二接线端、多个绕磁片主体的轴线绕制的第二线圈段以及第二连接端，多个第二线圈段与多个第一线圈段均沿磁片主体的径向排布；第一连接端与第二连接端衔接于磁片主体的中心轴上；第一接线端以及第二接线端均由磁片主体的外周伸出。本实用新型的线圈通过将两端的接线端由磁片主体的外周伸出，便于将两个接线端与外部电源或者用电设备进行连接，形成完整的电流回路；无需在磁片主体上开槽来引出接线端。

Claims

1. A wireless charging coil assembly, characterized by: include, Magnetic sheet body; The coil includes a first coil layer and a second coil layer stacked axially on the magnetic sheet body. The first coil layer includes a first terminal, a plurality of first coil segments wound around the axis of the magnetic sheet body, and a first connecting end. The second coil layer includes a second terminal, a plurality of second coil segments wound around the axis of the magnetic sheet body, and a second connecting end. The plurality of second coil segments and the plurality of first coil segments are arranged radially along the magnetic sheet body. The first connecting end and the second connecting end are connected to the central axis of the magnetic sheet body. The first terminal and the second terminal both extend from the outer periphery of the magnetic sheet body.

2. The wireless charging coil assembly of claim 1, wherein: The coil is made of a first flat wire made of copper.

3. The wireless charging coil assembly of claim 2, wherein: The coil is made of a second flat wire made of graphene copper.

4. The wireless charging coil assembly of claim 3, wherein: The first coil layer and the second coil layer are integrally formed.

5. The wireless charging coil assembly of claim 4, wherein: The first flat wire or the second flat wire is wound N turns from the outside to the inside along the radial direction of the magnetic sheet body to form the first coil layer. The first connecting end of the first coil layer extends along the axial direction of the magnetic sheet body to the side of the first coil layer away from the magnetic sheet body, and is wound M turns from the inside to the outside along the radial direction of the magnetic sheet body to form the second coil layer, where N+M≥11.

6. The wireless charging coil assembly according to claim 5, characterized in that: N=M, and N+M=11.

7. The wireless charging coil assembly of claim 3, wherein: The first coil layer is a first coil, and the second coil layer is a second coil. The first coil and the second coil are electrically connected by the first connection terminal and the second connection terminal.

8. The wireless charging coil assembly of claim 7, wherein: Both the first coil and the second coil are wound from the first flat wire or the second flat wire; or, one of the first coil and the second coil is wound from the first flat wire, and the other is wound from the second flat wire.

9. The wireless charging coil assembly of claim 3, wherein: The first or second flat wire has an axial thickness of H1 along the magnetic sheet body, with a value ranging from 0.2mm to 0.35mm. The first or second flat wire has a radial width of L along the magnetic sheet body, with a value ranging from 1.8mm to 2.2mm. The axial thickness of the magnetic sheet body is H2, with a value ranging from 1.0mm to 1.2mm.

10. The wireless charging coil assembly of claim 1, wherein: A support shaft is provided at the central axis of the magnetic sheet body, and multiple second coil segments and multiple first coil segments are wound around the support shaft; a receiving groove is provided on the support shaft, and the receiving groove extends through to the axial end face of the support shaft; the connection between the first connecting end and the second connecting end is embedded in the receiving groove.

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