Wireless power transmission/reception device

• US 10,218,205 B2
• Filed: 09/30/2015
• Issued: 02/26/2019
• Est. Priority Date: 10/07/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Jae-Hyun, Ryu, Young-Ho, Kwak, Kyu-Sub, Kwon, Sang-Wook, Kim, Do-Won, Kim, Dong-Zo, Song, Keum-Su, Ahn, Chi-Hyung
• Primary Examiner(s): Fleming, Fritz M
• Assistant Examiner(s): Dhillon, Jagdeep
• Application Number:
  US14/870,775
• Publication Number:
  US 20160099577A1
• Time in Patent Office: 1,245 Days
• Field of Search: 307 43, 307104, 307149, 307 82, 315 70, 343788, 343786
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

Apparatuses, systems, and methods of wireless power transmission/reception are described. In one wireless power transmission/reception device, a planar resonator capable of generating magnetic fields has one or more ferrite members mounted thereon such that the magnetic fields generated by the planar resonator have an overall direction substantially tilted or parallel to its opening/face, i.e., to the plane of the planar resonator. In a wireless power reception device, the planar resonator generates magnetic fields and an induced current when being resonated by external magnetic fields; in a wireless power transmission device, the planar resonator generates magnetic fields when being supplied with power.

Claims

1. A wireless power reception device comprising:

a planar resonator configured to be coupled with external magnetic fields and generate an induced current;

a first ferrite member mounted on a first side of the planar resonator and positioned in a lower portion of the planar resonator; and

a second ferrite member mounted on a second side of the planar resonator opposite to the first side and positioned in an upper portion of the planar resonator,

wherein the external magnetic fields pass through an aperture of the planar resonator substantially from one of the first side of the lower portion of the planar resonator and the second side of the upper portion of the planar resonator to the other of the first side of the lower portion of the planar resonator and the second side of the upper portion of the planar resonator.

2. The wireless power reception device of claim 1, wherein the first ferrite member and the second ferrite member are staggered in relation to each other on the planar resonator.

4. The wireless power reception device of claim 1, wherein the planar resonator comprises at least one of a loop antenna and an LC resonance circuit.

5. The wireless power reception device of claim 1, wherein the planar resonator is one of a plurality of planar resonators which are arranged in series or parallel to each other.

6. The wireless power reception device of claim 1, wherein the wireless power reception device comprises a portable electronic device.

7. The wireless power reception device of claim 1, further comprising:

a battery pack,

wherein the planar resonator supplies charging power to the battery pack.

8. The wireless power reception device of claim 1, wherein the wireless power reception device is a wearable electronic device including a main body, a circuit board within the main body, and a wearing band extending from the main body, and

wherein the planar resonator is provided on any one of the circuit board, an edge of the main body, and the wearing band.

9. The wireless power reception device of claim 1, wherein the wireless power reception device is a wearable display device including a display, an optical lens, and at least one housing that accommodates a battery pack, and

wherein the planar resonator is disposed on any one of the optical lens and the housing.

12. The wireless power reception device of claim 1, wherein the planar resonator is one of a plurality of planar resonators, the device further comprising:

a plurality of battery packs,

wherein the plurality of planar resonators are arranged so that each planar resonator corresponds to one of the plurality of battery packs.

3. A wireless power reception device comprising:

a planar resonator configured to be coupled with external magnetic fields and generate an induced current;

a first ferrite member disposed adjacent to one end of an upper portion of the planar resonator;

a second ferrite member disposed adjacent to the opposite end of the upper portion of the planar resonator; and

a third ferrite member mounted on a central region of the planar resonator and positioned in a lower portion of the planar resonator,

wherein the external magnetic fields pass through an aperture of the planar resonator substantially from the one end and the opposite end of the upper portion of the planar resonator to the central region of the lower portion of the planar resonator, or substantially from the central region of the lower portion of the planar resonator to the one end and the opposite end of the upper portion of the planar resonator.

10. A wireless power reception device comprising:

a planar resonator comprising an aperture formed through from a lower portion of the planar resonator to an upper portion of the planar resonator, and configured to generate magnetic fields and an induced current when being resonated by external magnetic fields; and

one or more ferrite members mounted on the planar resonator such that the magnetic fields generated by the planar resonator have an overall direction substantially tilted or parallel to the aperture,

wherein the wireless power reception device is a wearable display device which includes;

a pair of optical lenses;

a first housing that accommodates one of the optical lenses;

a second housing that accommodates the other of the optical lenses;

a third housing connected to the first housing via a first housing connection; and

a fourth housing connected to the second housing via a second housing connection,

wherein at least one of the first, second, third, and fourth housings has a battery pack embedded therein, and

wherein the planar resonator is disposed in at least one of the first, second, third, and fourth housings, the first and second housing connections, and the optical lenses.

11. The wireless power reception device of claim 10, wherein the first and second housings are connected via a bridge.

13. A wireless power transmission device comprising:

a planar configured to be coupled with external magnetic fields and generate an induced current;

a first ferrite member mounted on a first side of the planar resonator and positioned in a lower portion of the planar resonator; and

a second ferrite member mounted on a second side of the planar resonator opposite to the first side and positioned in an upper portion of the planar resonator,

wherein the external magnetic fields pass through an aperture of the planar resonator substantially from one of the first side of the lower portion of the planar resonator and the second side of the upper portion of the planar resonator to the other of the first side of the lower portion of the planar resonator and the second side of the upper portion of the planar resonator.

14. The wireless power transmission device of claim 13, wherein the first ferrite member and the second ferrite member are staggered in relation to each other on the planar resonator.

16. The wireless power transmission device of claim 13, wherein the planar resonator comprises at least one of a loop antenna and an LC resonance circuit.

17. The wireless power transmission device of claim 13, wherein the planar resonator is one of a plurality of planar resonators which are arranged in series or parallel to each other.

18. The wireless power transmission device of claim 13, wherein the planar resonator comprises primary planar resonator,

wherein the primary planar resonator and a secondary planar resonator of a portable electronic device are capable of forming an electromagnetic field coupling by which the primary planar resonator induces a current in the secondary planar resonator through its generated magnetic fields.

19. The wireless power transmission device of claim 18, wherein the wireless power transmission device comprises a charging cradle and the portable electronic device is placed on or near the charging cradle to be supplied with a charging power.

20. The wireless power transmission device of claim 19, wherein the portable electronic device includes a battery pack, and the supplied charging power is used to charge the battery pack.

21. The wireless power transmission device of claim 18, further comprising:

a surface where the portable electronic device may be removably placed on or near to form the electromagnetic field coupling of the primary and secondary planar resonators.

22. The wireless power transmission device of claim 21, wherein a plurality of portable electronic devices may be removably placed on or near the surface in order to form electromagnetic field coupling of the primary planar resonator and the secondary planar resonators of the plurality of portable electronic devices at the same time.

15. A wireless power transmission device comprising:

a planar resonator configured to be coupled with external magnetic fields and generate an induced current;

a first ferrite member disposed adjacent to one end of an upper portion of the planar resonator;

a second ferrite member disposed adjacent to the opposite end of the upper portion of the planar resonator; and

a third ferrite member disposed on a central region of a lower portion of the planar resonator opposite to the upper portion of the planar resonator,

wherein the external magnetic fields pass through an aperture of the planar resonator substantially from the one end and the opposite end of the upper portion of the planar resonator to the central region of the lower portion of the planar resonator, or substantially from the central region of the lower portion of the planar resonator to the one end and the opposite end of the upper portion of the planar resonator.