Wireless power transmitter for supporting multiple charging schemes

• US 9,553,478 B2
• Filed: 10/09/2014
• Issued: 01/24/2017
• 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:
  US14/510,752
• Publication Number:
  US 20150102773A1
• Time in Patent Office: 838 Days
• Field of Search: 320/108, 320/114, 320/115, 320/137, 307/104
• US Class Current: 1/1
• 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 first wireless transmitting unit disposed at a rear surface of the wireless power receiver and having a first charging scheme;

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; and

a controller configured to detect a charging scheme of the wireless power receiver, select one from the first wireless transmitting unit or the second wireless transmitting unit according to the charging scheme of the wireless power receiver, and transmit power through the selected wireless transmitting unit.

2. The wireless power transmitter of claim 1, wherein the second wireless transmitting unit is inclined from the first wireless power transmitter.

3. The wireless power transmitter of claim 1, wherein the second wireless transmitting unit is perpendicular to the first wireless transmitting unit.

4. The wireless power transmitter of claim 1, wherein a center of the second wireless transmitting unit is aligned on a same axis with a center of the wireless power receiver.

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

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

7. The wireless power transmitter of claim 1, further comprising a housing, wherein the wireless power receiver is received in the housing and the first and second wireless transmitters are accommodated in the housing.

8. The wireless power transmitter of claim 7, wherein a receiving groove for receiving the wireless power receiver is formed in the housing.

9. The wireless power transmitter of claim 8, wherein the first wireless transmitter is installed on a bottom surface of the receiving groove of the housing.

10. The wireless power transmitter of claim 8, wherein the second wireless transmitter is accommodated on an inner side surface of the receiving groove of the housing.