Wireless power transmitter for supporting multiple charging schemes

• US 9,837,851 B2
• Filed: 12/12/2016
• Issued: 12/05/2017
• Est. Priority Date: 10/10/2013
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Song, Young Kil
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US15/375,280
• Publication Number:
  US 20170104360A1
• Time in Patent Office: 358 Days
• Field of Search: 320108, 320114, 320115, 320137, 307104
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• 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 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

The wireless power transmitter includes a first wireless transmitting unit disposed at a rear surface of the wireless power receiver and having a first charging scheme, and a second wireless transmitting unit disposed on at least one of side surfaces of the wireless power receiver and having a second charging scheme different from the first charging scheme. The wireless power transmitter may more efficiently charge the wireless power receiver.

Claims

1. A wireless power transmitter for charging a wireless power receiver, the wireless power transmitter comprising;

a housing having a receiving groove, the housing receiving the wireless power receiver in the receiving groove; and

a first wireless transmitter having a first charging scheme and a second wireless transmitter having a second charging scheme, the first wireless transmitter and the second wireless transmitter being accommodated in the housing;

wherein the receiving groove has a bottom surface and an inner side surface that is inclined from the bottom surface,

wherein the first wireless transmitter is provided to face the bottom surface, and

wherein the second wireless transmitter is provided to face the inner side surface.

2. The wireless power transmitter of claim 1, wherein the first wireless transmitter includes a first coil, and

wherein the first coil is provided to face the bottom surface.

3. The wireless power transmitter of claim 1, wherein the second wireless transmitter includes a second coil, and

wherein the second coil is provided to face the inner side surface.

4. The wireless power transmitter of claim 3, wherein the second coil is provided away from a first coil of the first wireless transmitter toward a top surface of the housing.

5. The wireless power transmitter of claim 3, wherein the second coil is provided in a region that is outside of a region where the first coil is provided.

6. The wireless power transmitter of claim 1, wherein a bottom portion width of the receiving groove is smaller than a top portion width of the receiving groove.

7. The wireless power transmitter of claim 1, further comprising a controller that transmits power through the first wireless transmitter or the second wireless transmitter based on a charging scheme of the wireless power receiver.

8. The wireless power transmitter of claim 1, further comprising an interface that receives power from a power supply and provides the power to the wireless power transmitter.

9. The wireless power transmitter of claim 1, wherein the first charging scheme is an electromagnetic induction scheme.

10. The wireless power transmitter of claim 1, wherein the second charging scheme is a resonance scheme.

11. A wireless power transmitter for charging a wireless power receiver, the wireless power transmitter comprising;

a housing having a having a placement surface, the housing receiving the wireless power receiver on the placement surface; and

a first wireless transmitter having a first charging scheme and a second wireless transmitter having a second charging scheme, the first wireless transmitter and the second wireless transmitter being accommodated in the housing;

wherein the housing has a bottom surface and an outer side surface this is inclined from the bottom surface,

wherein the first wireless transmitter is provided to face the bottom surface, and

wherein the second wireless transmitter is provided to face the outer side surface.

12. The wireless power transmitter of claim 11, wherein the first wireless transmitter has a first coil, and

wherein the first coil is provided to face the bottom surface.

13. The wireless power transmitter of claim 11, wherein the second wireless transmitter has a second coil, and

wherein the second coil is provided to face the outer side surface.

14. The wireless power transmitter of claim 13, wherein the second coil is positioned away from a first coil of the first wireless transmitter toward a top surface of the housing.

15. The wireless power transmitter of claim 13, wherein the second coil is provided in a region of the housing that is outside the region of housing where the first coil is provided.

16. The wireless power transmitter of claim 11, wherein a bottom portion width of the housing is larger than a top portion width of the placement surface.

17. The wireless power transmitter of claim 11, further comprising a controller that transmits power through the first wireless transmitter or the second wireless transmitter according to a charging scheme of the wireless power receiver.

18. The wireless power transmitter of claim 11, further comprising an interface that receives power from a power supply and provides the power to the wireless power transmitter.

19. The wireless power transmitter of claim 11, wherein the first charging scheme is an electromagnetic induction scheme.

20. The wireless power transmitter of claim 11, wherein the second charging scheme is a resonance scheme.