Method and apparatus for controlling wireless power of a receiver in a wireless power transmission/reception system

• US 10,333,359 B2
• Filed: 11/22/2017
• Issued: 06/25/2019
• Est. Priority Date: 06/07/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Se-Ho, Lee, Young-Min, Lee, Kyung-Woo, Byun, Kang-Ho
• Primary Examiner(s): Deberadinis, Robert L
• Application Number:
  US15/821,290
• Publication Number:
  US 20180083454A1
• Time in Patent Office: 580 Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A method and apparatus are provided for controlling power in a wireless power transmission/reception system. The method includes receiving power information from a receiver within a charging area; determining whether power is available for the receiver based on the power information; if the power is available for the receiver, transmitting, to the receiver, a first response requesting the receiver to perform charging; and if the power is not available for the receiver, transmitting, to the receiver, a second response requesting the receiver to maintain a standby state

Claims

1. A method for controlling wireless power transmission at an electronic device, the method comprising:

receiving power information from a receiver within a charging area;

determining whether power is available for the receiver based on the power information;

if the power is available for the receiver, transmitting, to the receiver, a first response requesting the receiver to perform charging; and

if the power is not available for the receiver, transmitting, to the receiver, a second response requesting the receiver to maintain a standby state.

2. The method of claim 1, wherein the first response includes information about an amount of available power of the electronic device.

3. The method of claim 1, wherein the first response includes a total power quantity capable of being supplied to the receiver from the electronic device.

4. The method of claim 1, wherein determining whether the power is available for the receiver comprises:

identifying remaining power of the electronic device; and

determining whether the remaining power is larger than available power for charging the receiver.

5. The method of claim 4, further comprising, if the remaining power is not larger than the available power for charging the receiver, determining that the power is not available for the receiver.

6. The method of claim 1, further comprising, if the power is not available for the receiver, transmitting a request to wait for another response from the electronic device.

7. The method of claim 6, further comprising:

identifying a total amount of power capable of being supplied to the receiver from the electronic device; and

determining whether the total amount of power is larger than available power for charging the receiver.

8. The method of claim 7, further comprising, if the total amount of power is larger than the available power for charging the receiver, determining that the power is available for the receiver.

9. An electronic device for controlling wireless power transmission, the electronic device comprising:

a communication unit; and

a processor configured to;

receive, through the communication unit, power information from a receiver within a charging area,

determine whether power is available for the receiver based on the power information,

control the communication unit to transmit, to the receiver, a first response requesting the receiver to perform charging, if the power is available for the receiver, and

control the communication unit to transmit, to the receiver, a second response requesting the receiver to maintain a standby state, if the power is not available for the receiver.

10. The electronic device of claim 9, wherein the first response includes an amount of available power of the electronic device.

11. The electronic device of claim 9, wherein the first response includes a total amount of power capable of being supplied to the receiver from the electronic device.

12. The electronic device of claim 9, wherein the processor is further configured to:

identify remaining power of the electronic device, and

determine whether the remaining power is larger than available power for charging the receiver.

13. The electronic device of claim 12, wherein the processor is further configured to, if the remaining power is not larger than the available power for charging the receiver, determine that the power is not available for the receiver.

14. The electronic device of claim 9, wherein the processor is further configured to control the communication unit to transmit a request to wait for another response from the electronic device, if the power is not available for the receiver.

15. The electronic device of claim 9, wherein the processor is further configured to:

identify a total amount of power capable of being supplied to the receiver from the electronic device, and

determine whether the total amount of power is larger than available power for charging the receiver.

16. The electronic device of claim 15, wherein the processor is further configured to, if the total amount of power is larger than the available power for charging the receiver, determine that the power is available for charging the receiver.

17. A method for receiving wireless power at a receiver, the method comprising:

transmitting power information to an electronic device;

performing charging, if a first response is received indicating that the wireless power is available from the electronic device; and

maintaining a standby state, if a second response is received indicating that the wireless power is not available from the electronic device.

18. The method of claim 17, wherein the first response includes information about an amount of the available power of the electronic device.

19. The method of claim 17, wherein the first response includes a total amount of power capable of being supplied to the receiver from the electronic device.

20. The method of claim 17, further comprising, if the wireless power is not available from the electronic device, waiting for another response from electronic device.

21. A receiver for receiving wireless power, the receiver comprising:

a communication unit; and

a controller configured to;

control the communication unit to transmit power information to an electronic device,

perform charging, if a first response is received through the communication unit indicating that the wireless power is available from the electronic device, and

maintain a standby state, if a second response is received through the communication unit indicating that the wireless power is not available from the electronic device.

22. The receiver of claim 21, wherein the first response includes an amount of the available power of the electronic device.

23. The receiver of claim 21, wherein the first response includes a total amount of power capable of being supplied to the receiver from the electronic device.

24. The receiver of claim 21, wherein the controller is further configured to wait for another response from the electronic device, if the wireless power is not available from the electronic device.