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Wireless charging receiving coil and preparation method thereof

A wireless charging and receiving coil technology, applied in the direction of transformer/inductor coil/winding/connection, circuit, inductor, etc., can solve the problems of difficult integration and large area, and achieve high power receiving ability and high quality factor. Effect

Active Publication Date: 2019-04-30
苏州创印电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the wireless charging receiving coil is usually made of copper wires, and some researches are to print the wireless charging receiving coil on the PCB circuit board, but the wireless charging receiving coils are all rigid, And the area is large, it is difficult to integrate into portable and wearable devices

Method used

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  • Wireless charging receiving coil and preparation method thereof
  • Wireless charging receiving coil and preparation method thereof
  • Wireless charging receiving coil and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0086] see figure 1 Shown is the structure of a wireless charging receiving coil provided in Embodiment 1 of the present application. The wireless charging receiving coil is a 4-layer series structure, including 1 layer of flexible substrate 104, 3 flexible insulating layers 10, and 4 conductive coil layers. 11, 3 via holes 12, 2 terminals 131, 132. The bottom layer is the flexible substrate 104 as the base layer, and the upward sequence is the first conductive coil layer 114, the first insulating layer 103, the second conductive coil layer 113, the second insulating layer 102... until the fourth conductive coil layer The coil layers 111 are separated by insulating layers 10 between adjacent conductive coil layers, forming a multi-layer structure in which conductive coil layers and insulating layers are stacked alternately.

[0087] Wherein, the conductive coil layers of different layers have the same orientation after being connected in series, and the inner end 146 of the f...

Embodiment 2

[0095] see Figure 4 Shown is the structure of a wireless charging receiving coil provided by Embodiment 2 of the present application. The wireless charging receiving coil is a 4-layer series-parallel structure, in which the upper two layers 211, 212 are connected in parallel, and the lower two layers 213, 214 are connected in parallel. , and then the upper two layers are connected in series with the lower two layers, which also includes 1 layer of flexible substrate 204 , 3 flexible insulating layers 20 , 4 conductive coil layers 21 , 5 via holes 22 , and 2 terminals 231 , 232 . The bottom layer is the base layer 204, and upwards are the first conductive coil layer 214, the first insulating layer 203, the second conductive coil layer 213, the second insulating layer 202... until the fourth conductive coil layer 211, Adjacent conductive coil layers are separated by insulating layers 20 to form a multi-layer structure in which conductive coils and insulating layers are stacked ...

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Abstract

The invention discloses a wireless charging receiving coil and a preparation method thereof. The wireless charging receiving coil includes a flexible base and a multi-layer flexible coil plate. The multi-layer flexible coil plate includes a plurality of alternately stacked conductive coil layers and a plurality of insulating layers, wherein a first conductive coil layer is disposed on the flexible base. On one side, the first insulating layer is disposed on the first conductive coil layer. At the same time, via holes are also provided in each insulating layer. The via holes are filled with conductive materials to connect the plurality of conductive coil layers. The conductive coils are connected in series and / or in parallel to form a wireless charging coil, and the conductive coils in multiple conductive coil layers have the same current direction. The wireless charging receiving coil provided by the present invention has the advantages of ultra-thin, flexible, ultra-small, high quality factor, etc., has strong power receiving ability, fully complies with the Qi standard, and can be used in portable and wearable devices.

Description

technical field [0001] The invention specifically relates to a wireless charging receiving coil and a preparation method thereof, belonging to the technical field of wireless charging. Background technique [0002] With the development of nanofabrication technology and very large integrated circuit (VLSI) technology, the size of electronic components and control chips is getting smaller and smaller, making electronic products develop in the direction of small, portable, integrated and wearable. At present, electronic products are required to be integrated and fully enclosed. They need to improve the life and reliability of the products while being waterproof and dustproof. This poses a challenge to the charging process of electronic products. For example, electronic products such as mobile phones and tablet computers (PDA) A rechargeable battery (such as a lithium battery) generally needs to have a charging interface on it to charge the internal battery of an electronic prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/10H01F38/14H01F27/28H01F27/32H02J7/00
CPCH02J7/025H01F27/2804H01F27/323H01F38/14H01F2038/143H01F2027/2809
Inventor 刘福星顾唯兵张克栋李亚邦崔铮
Owner 苏州创印电子科技有限公司
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