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Coil structure and preparation method of composite coil structure
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A composite coil and coil technology, which is applied in coil manufacturing, inductance/transformer/magnet manufacturing, inductors, etc., can solve the problems of thick overall antenna, complex preparation process, heat generation, etc., achieve optimized performance, simplify the preparation process, reduce The effect of production costs
Active Publication Date: 2021-05-07
上海威斯科电子材料有限公司
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[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a coil structure and a method for preparing a composite coil structure, which is used to solve the problems of complex preparation process and poor antenna overall Problems with thicker thickness and severe heat generation
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Embodiment 1
[0053] Such as figure 1 As shown, this embodiment provides a preparation method of a coil structure, the preparation method comprising:
[0054] Provide a laminated structure 11, the laminated structure 11 sequentially includes an adhesive layer 111, a metal layer 112 and an insulating layer 113 from bottom to top;
[0055] Die-cutting the laminated structure 11 by a die stamping process to form a coil 12; and
[0056] Provide a flexible circuit board 13 with conductive lines 132 and gold fingers 133 , and electrically connect the coil 12 and the gold fingers 133 through the conductive lines 132 to form the coil structure 10 .
[0057] As an example, such as figure 2 As shown, the method for forming the laminated structure 11 includes:
[0058] providing an adhesive layer 111 and a metal layer 112, and hot pressing the metal layer 112 on the adhesive layer 111 by using a hot pressing process; and
[0059] The insulating layer 113 is formed on the metal layer 112 by a spra...
Embodiment 2
[0086] Such as Figure 7 As shown, this embodiment provides a preparation method of a composite coil structure, the preparation method comprising:
[0087] providing a heat dissipation layer 20 and a shielding layer 30, and attaching the shielding layer 30 to the upper surface of the heat dissipation layer 20; and
[0088] A coil structure 10 prepared by the preparation method described in Embodiment 1 is provided, and the coil structure 10 is attached to the upper surface of the shielding layer 30 to form the composite coil structure 100 .
[0089] As an example, a roll-to-roll embossing process or a sheet embossing process is used to attach the shielding layer to the upper surface of the heat dissipation layer.
[0090] Specifically, the heat dissipation layer 20 includes a graphite sheet; the shielding layer 30 includes a lamination of sendust, ferrite or glue layer and nanocrystals, wherein the number of laminations is greater than one; preferably, In this embodiment, th...
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Abstract
The present invention provides a method for preparing a coil structure and a composite coil structure. The method for preparing the coil structure includes: providing a laminated structure, wherein the laminated structure includes an adhesive layer, a metal layer and an insulating layer from bottom to top; The die stamping process punches the laminated structure to form a coil; and provides a flexible circuit board with a conductive line and a gold finger, and electrically connects the coil to the gold finger through a conductive line to form a coil structure . The coil structure and the preparation method of the composite coil structure provided by the present invention solve the problems in the prior art that the coil is formed by the FPC preparation process, the preparation process is complicated, the overall thickness of the antenna is relatively thick, and the heat generation is serious.
Description
technical field [0001] The invention relates to the fields of wireless charging and near-field communication, in particular to a coil structure and a preparation method of a composite coil structure. Background technique [0002] Wireless charging technology (Wireless charging technology or Wireless charge technology) originates from wirelesspower transmission technology and can be divided into low-power wireless charging and high-power wireless charging. Low-power wireless charging often adopts electromagnetic induction, such as the Qi method for charging mobile phones. High-power wireless charging often uses resonance, such as the charging method of electric vehicles. [0003] With the advent of the 5G era, the power consumption of mobile terminals has increased sharply, but the battery industry has not had a technological breakthrough and cannot support the high power consumption of 5G. As a result, mobile terminals supporting 5G have short standby time and user experie...
Claims
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