Receiving antenna and wireless power receiving device including the same

Patent metadata

Field	Value
Publication number	US-2016156103-A1
Application number	US-201414901426-A
Country	US
Kind code	A1
Filing date	Jun 16, 2014
Priority date	Jun 27, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a soft magnetic layer stacked on the substrate, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer, and an insulating layer is formed between the soft magnetic layer and the receiving coil.

First claim

1 . A receiving antenna of a wireless power receiving device wirelessly charging electric power, the receiving antenna comprising:
a substrate; a soft magnetic layer stacked on the substrate; a receiving coil wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer; and an adhesive layer formed between the soft magnetic layer and the receiving coil.

2 . The receiving antenna of claim 1 ,
wherein the adhesive layer includes a first adhesive layer formed on the soft magnetic layer, an insulating layer formed on the first adhesive layer, and a second adhesive layer formed on the insulating layer.

3 . The receiving antenna of claim 1 , wherein the insulating layer is a film including a polyethylene terephthalate (PET) material.

4 . The receiving antenna of claim 1 , wherein the soft magnetic layer includes a soft magnetic metal powder and a polymer resin.

5 . The receiving antenna of claim 1 , wherein the soft magnetic layer includes a groove portion.

6 . The receiving antenna of claim 5 , wherein the receiving coil is accommodated in the groove portion.

7 . The receiving antenna of claim 1 , further comprising a support means stacked on the receiving coil.

8 . The receiving antenna of claim 1 , wherein the receiving coil is embedded in one surface of the soft magnetic layer.

9 . A method of fabricating a receiving antenna, the method comprising:
stacking a plurality of sheets including a soft magnetic metal powder and a polymer resin; forming an adhesive layer on an upper plane of the plurality of sheets; disposing a receiving coil on the adhesive layer; and compressing the plurality of sheets, the adhesive layer, and the receiving coil to form the receiving coil inside of the plurality of sheets.

10 . The method of claim 9 , wherein the soft magnetic metal powder includes an Fe-silicon-based alloy.

11 - 12 . (canceled)

13 . A wireless power receiving device wirelessly charging electric power, comprising:
a substrate; a soft magnetic layer stacked on the substrate; a receiving coil wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer; an adhesive layer formed between the soft magnetic layer and the receiving coil; a circuit unit connected to the receiving coil, and configured to convert electromagnetic energy into electrical energy; and a storage unit configured to store the electrical energy.

14 . The receiving antenna of claim 4 , wherein the soft magnetic layer includes a plurality of stacked sheets including the soft magnetic metal powder and the polymer resin.

15 . The receiving antenna of claim 14 , wherein the soft magnetic metal powder includes an Fe-silicon-based alloy.

16 . The receiving antenna of claim 15 , wherein the polymer resin includes at least one of a rubber-based polymer resin, an epoxy-based polymer resin, and a silicon-based polymer resin.

17 . The method of claim 9 , wherein the adhesive layer includes a first adhesive layer formed on the plurality of sheets, an insulating layer formed on the first adhesive layer, and a second adhesive layer formed on the insulating layer.

18 . The method of claim 10 , wherein the polymer resin includes at least one of a rubber-based polymer resin, an epoxy-based polymer resin, and a silicon-based polymer resin.

19 . The method of claim 9 , further comprising fabricating the plurality of sheets including the soft magnetic metal powder and the polymer resin,
each sheet is fabricated by performing film casting on ink including a solvent, the soft magnetic metal powder and the polymer resin.

20 . The wireless power receiving device of claim 13 , wherein the adhesive layer includes a first adhesive layer formed on the soft magnetic layer, an insulating layer formed on the first adhesive layer, and a second adhesive layer formed on the insulating layer.

21 . The wireless power receiving device of claim 13 , wherein the soft magnetic layer includes a soft magnetic metal powder and a polymer resin.

22 . The wireless power receiving device of claim 21 , wherein the soft magnetic layer includes a plurality of stacked sheets including the soft magnetic metal powder and the polymer resin.

Assignees

• Lg Innotek Co Ltd

Inventors

• Bae Seok
• Choi Donchul
• Hyun Soon Young

Classifications

• H02J50/10

  using inductive coupling · CPC title

• H01Q7/06 Primary

  with core of ferromagnetic material (H01Q7/02 takes precedence) · CPC title

• H02J50/27

  characterised by the type of receiving antennas, e.g. rectennas · CPC title

• H02J50/20

  using microwaves or radio frequency waves · CPC title

• H02J7/025

  Electricity · mapped topic