Wireless power transfer method, apparatus and system

• US 10,601,253 B2
• Filed: 09/04/2018
• Issued: 03/24/2020
• Est. Priority Date: 07/24/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yongcheol, Lee, Hyunbeom
• Primary Examiner(s): Cavallari, Daniel J
• Application Number:
  US16/121,128
• Publication Number:
  US 20190044388A1
• Time in Patent Office: 567 Days
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

A communication method of a wireless power receiver performing communication with a wireless power transmitter through a plurality of slots, the method includes receiving allocation of any one of the plurality of slots from the wireless power transmitter, receiving provision of at least one of the plurality of slots from the wireless power transmitter as locked slots subsequent to the allocation, and transmitting information associated with a configuration phase and information associated with a negotiation phase to the wireless power transmitter within the locked slots.

Claims

1. A communication method of a wireless power receiver performing communication with a wireless power transmitter through a plurality of slots, the method comprising:

receiving allocation of any one of the plurality of slots from the wireless power transmitter;

receiving provision of at least one of the plurality of slots from the wireless power transmitter as locked slots subsequent to the allocation; and

transmitting information associated with a configuration phase and information associated with a negotiation phase to the wireless power transmitter within the locked slots.

2. The method of claim 1, wherein the provision of the locked slots is suspended when the transmission of the information associated with the configuration phase and the information associated with the negotiation phase is completed.

3. The method of claim 2, wherein the at least one slot is provided as locked slots prior to the provision of the locked slots is suspended, and the at least one slot is provided as free slots subsequent to the provision of the locked slots is suspended.

4. The method of claim 1, wherein remaining slots excluding any one slot allocated to the wireless power receiver among the plurality of slots are free slots, and the locked slots are at least one of the free slots.

5. The method of claim 4, wherein the free slots are slots for allowing transmission of information by the wireless power receiver.

6. The method of claim 1, wherein the information associated with the configuration phase comprises:

identification data packets, one or more proprietary data packets and an identification packet (CFG).

7. The method of claim 1, wherein the information associated with the negotiation phase comprises:

one or more negotiation data packets, optionally intermixed with proprietary data packets, and a specific request and end-negotiation packet.

8. The method of claim 1, wherein the locked slots limits the transmission of information associated with the configuration phase and information associated with the negotiation phase from another wireless power receiver other than the wireless power receiver.

9. A wireless power receiver for performing communication with a wireless power transmitter using a plurality of slots, the wireless power receiver comprising:

a power reception unit configured to receive a wireless power from the wireless power transmitter; and

a power reception controller configured to control the reception of the wireless power,

wherein the wireless power receiver receives allocation of any one of the plurality of slots from the wireless power transmitter, receives provision of at least one of the plurality of slots from the wireless power transmitter as locked slots subsequent to the allocation, and transmits information associated with a configuration phase and information associated with a negotiation phase to the wireless power transmitter within the locked slots.

10. The wireless power receiver of claim 9, wherein the locked slots limits the transmission of information associated with the configuration phase and information associated with the negotiation phase by other wireless power receivers other than the wireless power receiver.

11. The wireless power receiver of claim 9, wherein the provision of the locked slots is suspended when the reception of information associated with the configuration phase and information associated with the negotiation phase is completed.

12. The wireless power receiver of claim 9, wherein the at least one slot is provided as locked slots prior to the provision of the locked slots is suspended, and the at least one slot is provided as free slots subsequent to the provision of the locked slots is suspended.

13. The wireless power receiver of claim 9, wherein remaining slots excluding any one slot allocated to the wireless power receiver among the plurality of slots are free slots, and the locked slots are provided as at least one of the free slots.

14. The wireless power receiver of claim 9, wherein information associated with the configuration phase comprises:

identification data packets, one or more proprietary data packets and an identification packet (CFG).

15. The wireless power receiver of claim 9, wherein information associated with the negotiation phase comprises:

one or more negotiation data packets, optionally intermixed with proprietary data packets, and a specific request and end-negotiation packet.