Wireless power reception apparatus and wireless power transmission system including the same

Patent metadata

Field	Value
Publication number	US-10297380-B2
Application number	US-201615547777-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 25, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A wireless power receiving apparatus which wirelessly charges power according to one embodiment of the present invention includes a substrate, a soft magnetic layer which is laminated on the substrate and is formed with a plurality of patterns including at least 3 lines radiated from predetermined points, and a coil which is laminated on the soft magnetic layer and receives electromagnetic energy radiated from a wireless power transmitting apparatus.

First claim

The invention claimed is:

1. A magnetic sheet, comprising:
a substrate; and
a soft magnetic layer arranged on the substrate,
wherein the soft magnetic layer includes an Fe-based metal ribbon in which crack patterns are formed,
wherein the crack patterns include a first pattern and a plurality of second patterns disposed to be adjacent to the first pattern,
wherein each of the first pattern and the plurality of second patterns includes six or more radiated lines that radiate from a predetermined center point, and an edge portion that surrounds the radiated lines,
wherein the number of the plurality of second patterns is 3 to 8,
wherein the center points of the first pattern and the plurality of second patterns are spaced apart from each other by a predetermined rule,
wherein a portion of a region between the edge portion of the first pattern and the edge portions of the plurality of second patterns includes a non-pattern area, and
wherein a part of the edge portion of the first pattern includes a discontinuous section.

2. The magnetic sheet of claim 1 , wherein the first pattern includes:
a first region formed by a first radiated line and a second radiated line, which are adjacent to each other. among the plurality of radiated lines;
a second region formed by the second radiated line and a third radiated line, which are adjacent to each other;
a third region formed by the third radiated line and a fourth radiated line, which are adjacent to each other;
a fourth region formed by the fourth radiated line and a fifth radiated line, which are adjacent to each other; and
a fifth region formed by the fifth radiated line and a sixth radiated line, which are adjacent to each other,
wherein the edge portion of the first pattern includes a plurality of edge lines,
wherein the plurality of edge lines include:
a first edge line that surrounds a part of the first region; and
a second edge line that surrounds a part of the second region and extends from the first edge line, and

wherein the discontinuous section is formed in the third region.

3. The magnetic sheet of claim 2 ,
wherein at least one of the plurality of radiated lines of the first pattern is not connected to the edge portion of the first pattern.

4. The magnetic sheet of claim 2 , wherein
the first and second radiated lines of the first pattern, which are adjacent to each other, form an acute angle,
the second and third radiated lines of the first pattern, which are adjacent to each other, form an acute angle,
the third and fourth radiated lines of the first pattern, which are adjacent to each other, form an acute angle,
the fourth and fifth radiated lines of the first pattern, which are adjacent to each other, form an acute angle, and
the fifth and sixth radiated lines of the first pattern, which are adjacent to each other, form an acute angle.

5. The magnetic sheet of claim 1 ,
wherein the edge portion of the first pattern has a circular shape.

6. The magnetic sheet of claim 4 ,
further comprising a plurality of radiated lines, which radiate from the center point of the first pattern, between the fifth region and the first region.

7. The magnetic sheet of claim 1 ,
wherein a distance between two predetermined points of the edge portion, which face each other and come into contact with a virtual straight line passing through the center point of the first pattern, is in a range of 50 μm to 600 μm.

8. The magnetic sheet of claim 1 ,
wherein a thickness of the soft magnetic layer is in a range of 0.01 mm to 0.04 mm.

9. The magnetic sheet of claim 1 ,
wherein a part of the edge portions of the plurality of the second patterns includes at least one discontinuous section.

10. A magnetic sheet, comprising:
a substrate; and
a soft magnetic layer arranged on the substrate,
wherein the soft magnetic layer includes an Fe-based metal ribbon in which crack patterns are formed,
wherein the crack patterns include a first pattern and a plurality of second patterns disposed to be adjacent to the first pattern,
wherein each of the first pattern and the plurality of second patterns includes six or more radiated lines that radiate from a predetermined center point; and an edge portion that surrounds the radiated lines,
wherein the number of the plurality of second patterns is 3 to 8,
wherein the center points of the first pattern and the plurality of second patterns are spaced apart from each other by a predetermined rule,
wherein a portion of a region between the edge portion of the first pattern and the edge portions of the plurality of second patterns includes a non-pattern,
wherein the edge portion of the first pattern includes a plurality of edge lines, and
wherein at least one edge line of the plurality of edge lines includes a discontinuous section which is not connected to another edge line adjacent thereto.

11. The magnetic sheet of claim 10 , wherein the first pattern includes:
a first region formed by a first radiated line and a second radiated line, which are adjacent to each other, among the plurality of radiated lines;
a second region formed by the second radiated line and a third radiated line, which are adjacent to each other;
a third region formed by the third radiated line and a fourth radiated line, which are adjacent to each other;
a fourth region formed by the fourth radiated line and a fifth radiated line, which are adjacent to each other; and
a fifth region formed by the fifth radiated line and a sixth radiated line, which are adjacent to each other, wherein the plurality of edge lines of the first pattern include:
a first edge line which surrounds at least a part of the first region and is closest to the center point of the first pattern; and
a second edge line which surrounds at least a part of the second region, extends from the first edge line, and is closest to the center point of the first pattern, and

wherein the discontinuous section is formed in the third region.

12. The magnetic sheet of claim 11 , further comprising:
a third edge line that surrounds at least a part of the third region and is closest to the center point of the first pattern; and
a fourth edge line that surrounds at least a part of the fourth region and is closest to the center point of the first pattern.

13. The magnetic sheet of claim 12 ,
wherein the third edge line extends from the second edge line, and the third edge line is spaced apart from the fourth edge line.

14. The magnetic sheet of claim 13 ,
wherein an end point of the first edge line is directly connected to a start point of the second edge line, an end point of the second edge line is directly connected to a start point of the third edge line, and an end point of the third edge line is spaced apart from a start point of the fourth edge line.

15. The magnetic sheet of claim 10
wherein at least one of the plurality of radiated lines of the first pattern is not connected to the edge portion of the first pattern.

16. The magnetic sheet of claim 10 , wherein the edge portion of the first pattern has a circular shape.

17. The magnetic sheet of claim 11 , further comprising a plurality of radiated lines, which are radiated from the center point of the first pattern, between the fifth region and the first region.

18. The magnetic sheet of claim 11 ,
wherein a distance between two predetermined points of the edge portion, which face each other and come into contact with a virtual straight line passing through the center point of the first pattern, is in a range of 50 μm to 600 μ

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim So Yeon
• Bae Seok
• Yeom Jai Hoon
• Lee Sang Won
• Song Ji Yeon

Classifications

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J50/12 Primary

  of the resonant type · CPC title

• H01F27/25 Primary

  made from strips or ribbons (H01F27/26 takes precedence) · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J7/025

  Electricity · mapped topic