Wireless power transmission/reception device

Patent metadata

Field	Value
Publication number	US-11025100-B2
Application number	US-201916711846-A
Country	US
Kind code	B2
Filing date	Dec 12, 2019
Priority date	Mar 5, 2015
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

The present description relates to a wireless power transmission/reception device. The present description provides a magnetic field controlling member for focusing a magnetic field between a primary coil, which is connected to a power source of a wireless power transmission system and forms a magnetic field, and a secondary coil which is for receiving power by means of the magnetic field. The magnetic field controlling member includes: a substrate, between the primary coil and secondary coil, of which one side faces the primary coil or secondary coil; a pattern unit which is placed on the substrate and has a plurality of thin films that are positioned at a predetermined distance away from each other; and a connecting unit which electrically connects the plurality of thin films.

First claim

The invention claimed is:

1. An apparatus comprising:
a first surface configured to face a primary coil a wireless power transmitter that generates a magnetic field;
a second surface configured to face a secondary coil of a wireless power receiver that receives power via the magnetic field; and
a magnetic field control member that includes a plurality of linear thin films arranged side by side on either the first surface or the second surface, wherein the magnetic field control member is configured to focus the magnetic field between the primary coil and the secondary coil.

2. The apparatus of claim 1 , wherein the magnetic field control member is configured to cause the magnetic field to be focused on the secondary coil to reduce an influence of the magnetic field on parts of the wireless power receiver other than the secondary coil.

3. The apparatus of claim 1 , wherein the plurality of linear thin films are spaced apart from each other by a fixed interval.

4. The apparatus of claim 3 , wherein the first surface and the second surface are opposite sides of a substrate, and wherein the plurality of linear thin films is disposed on one side of the substrate.

5. The apparatus of claim 3 , wherein the magnetic field control member further includes a connection unit electrically connecting the plurality of linear thin films.

6. The apparatus of claim 5 , wherein the connection unit electrically connects one end of each of the plurality of linear thin films to each other.

7. The apparatus of claim 5 , wherein the connection unit electrically connects both ends of the plurality of linear thin films to each other.

8. The apparatus of claim 3 , wherein each of the plurality of linear thin films have a same length.

9. The apparatus of claim 3 , wherein the fixed interval about 1 mm.

10. The apparatus of claim 3 , wherein the plurality of linear thin films is formed of copper or a mixture or compound containing copper.

11. A wireless power transmitter comprising:
a primary coil configured to generate a magnetic field; and
a magnetic field control member having a first portion thereof configured to face the primary coil and a second portion thereof configured to face a secondary coil of a wireless power receiver that receives power via the magnetic field, wherein the magnetic field control member includes a plurality of linear thin films arranged side by side and is configured to focus the magnetic field between the primary coil and the secondary coil.

12. The wireless power transmitter of claim 11 , wherein the magnetic field control member is configured to cause the magnetic field to be focused on the secondary coil to reduce an influence of the magnetic field on parts of the wireless power receiver other than the secondary coil.

13. The wireless power transmitter of claim 11 , wherein the plurality of linear thin films are spaced apart from each other by a fixed interval.

14. The wireless power transmitter of claim 13 , wherein the first portion and the second portion represent opposite sides of a substrate, and wherein the plurality of linear thin films is disposed on one side of the substrate.

15. The wireless power transmitter of claim 13 , wherein the magnetic field control member further includes a connection unit electrically connecting the plurality of linear thin films.

16. A wireless power receiver comprising:
a secondary coil configured to receive power via a magnetic field generated by a primary coil of a wireless power transmitter; and
a magnetic field control member having a first portion thereof configured to face the primary coil and a second portion thereof configured to face the secondary coil, wherein the magnetic field control member includes a plurality of linear thin films arranged side by side and is configured to focus the magnetic field between the primary coil and the secondary coil.

17. The wireless power receiver of claim 16 , wherein the magnetic field control member is configured to cause the magnetic field to be focused on the secondary coil to reduce an influence of the magnetic field on parts of the wireless power receiver other than the secondary coil.

18. The wireless power receiver of claim 16 , wherein the plurality of linear thin films are spaced apart from each other by a fixed interval.

19. The wireless power receiver of claim 18 , wherein the first portion and the second portion represent opposite sides of a substrate, and wherein the plurality of linear thin films is disposed on one side of the substrate.

20. The wireless power receiver of claim 18 , wherein the magnetic field control member further includes a connection unit electrically connecting the plurality of linear thin films.

Assignees

• Ge Hybrid Tech Llc

Inventors

• Jung Chun Kil

Classifications

• H02J50/50 Primary

  using additional energy repeaters between transmitting devices and receiving devices · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H01F10/12

  being metals or alloys (intermetallic compounds H01F10/18) · CPC title

• H01F27/363

  made of electrically conductive material · CPC title

• H01F38/14

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