Wireless power transmission system, and method for controlling wireless power transmission and wireless power reception

• US 10,355,533 B2
• Filed: 01/25/2019
• Issued: 07/16/2019
• Est. Priority Date: 03/23/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Nam Yun, Kwon, Sang Wook, Park, Yun Kwon
• Primary Examiner(s): Deberadinis, Robert L
• Application Number:
  US16/257,935
• Publication Number:
  US 20190173321A1
• Time in Patent Office: 172 Days
• CPC Class Codes: G01R 23/04 adapted for measuring in circuits having distributed constants
• CPC Class Codes: G01R 27/04 in circuits having distributed constants , e.g. having very long conductors or involving high frequencies
• 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 50/50 using additional energy repeaters between transmitting devices and receiving devices
• 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 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

A wireless power transmission system, and a method for controlling wireless power transmission and wireless power reception are provided. According to an aspect, a method for controlling a wireless power transmission may include: detecting a plurality of target devices used to wirelessly receive power; selecting a source resonating unit from among a plurality of source resonating units, based on the amount of power to be transmitted to one or more of the plurality of target devices, a coupling factor associated with one or more of the plurality of target devices, or both; and wirelessly transmitting power to a target device using the selected source resonating unit.

Claims

1. A wireless power transmitting apparatus, the apparatus comprising:

a power transmitter having a plurality of power transmitting elements; and

a controller configured to;

detect a first target device configured to receive wireless power,

receive information on an amount of power required by the first target device and identification (ID) information of the first target device from the first target device,

select at least one power transmitting element from among the plurality of power transmitting elements, based on the ID information of the first target device, and

control the power transmitter to transmit, to the first target device, wireless power corresponding to the information on the amount of power required by the first target device via the selected at least one power transmitting element.

2. The wireless power transmitting apparatus of claim 1, wherein the controller further configured to control the power transmitter to transmit, to a second target device, wireless power via at least one power transmitting element selected from among the plurality of power transmitting elements based on ID information of the second target device.

3. The wireless power transmitting apparatus of claim 2, wherein the at least one power transmitting element selected based on the ID information of the first target device and the at least one power transmitting element selected based on the ID information of the second target device are arranged in an array.

4. The wireless power transmitting apparatus of claim 2, an amount of power transmitted by the at least one power transmitting element selected based on the ID information of the first target device is different from an amount of power transmitted by the at least one power transmitting element selected based on the ID information of the second target device.

5. The wireless power transmitting apparatus of claim 2, wherein a frequency of wireless power by the at least one power transmitting element selected based on the ID information of the first target device is different from a frequency of wireless power by the at least one power transmitting element selected based on the ID information of the second target device.

6. The wireless power transmitting apparatus of claim 1, wherein the controller further configure to:

detect a second target device configured to receive wireless power,

receive information on an amount of power required by the second target device and ID information of the second target device from the second target device,

select at least one power transmitting element from among the plurality of power transmitting elements, based on the ID information of the second target device, and

control the power transmitter to transmit, to the second target device, wireless power corresponding to the information on the amount of power required by the second target device via the at least one power transmitting element selected based on the ID information of the second target device.

7. The wireless power transmitting apparatus of claim 1, wherein the ID information corresponds to location information of the plurality of power transmitting elements.

8. The wireless power transmitting apparatus of claim 7, wherein the location information indicates a location corresponding to at least one of power transmitting element among the plurality of power transmitting elements.

9. The wireless power transmitting apparatus of claim 1, wherein the controller further configured to stop supplying power to the plurality of power transmitting elements except to the selected at least one transmitting element, in response to the at least one transmitting element selected based on the ID information of the first target device.

10. A wireless power transmitting method performed by an electronic device, the method comprising:

detecting a first target device configured to receive wireless power;

receiving information on an amount of power required by the first target device and identification (ID) information of the first target device from the first target device;

selecting at least one power transmitting element from among a plurality of power transmitting elements of the electronic device, based on the ID information of the first target device; and

transmitting, to the first target device, wireless power corresponding to the information on the amount of power required by the first target device via the selected at least one power transmitting element.

11. The wireless power transmitting method of claim 10, further comprising transmitting, to a second target device, wireless power via at least one power transmitting element selected from among the plurality of power transmitting elements based on ID information of the second target device.

12. The wireless power transmitting method of claim 11, wherein the at least one power transmitting element selected based on the ID information of the first target device and the at least one power transmitting element selected based on the ID information of the second target device are arranged in an array.

13. The wireless power transmitting method of claim 11, an amount of power transmitted by the at least one power transmitting element selected based on the ID information of the first target device is different from an amount of power transmitted by the at least one power transmitting element selected based on the ID information of the second target device.

14. The wireless power transmitting method of claim 11, wherein a frequency of wireless power by the at least one power transmitting element selected based on the ID information of the first target device is different from a frequency of wireless power by the at least one power transmitting element selected based on the ID information of the second target device.

15. The wireless power transmitting method of claim 10, further comprising:

detecting a second target device configured to receive wireless power,

receiving information on an amount of power required by the second target device and ID information of the second target device from the second target device,

selecting at least one power transmitting element from among the plurality of power transmitting elements, based on the ID information of the second target device, and

transmitting, to the second target device, wireless power corresponding to the information on the amount of power required by the second target device via the at least one power transmitting element selected based on the ID information of the second target device.

16. The wireless power transmitting method of claim 10, wherein the ID information corresponds to the location information of the plurality of power transmitting elements.

17. The wireless power transmitting method of claim 16, wherein the location information indicates a location corresponding to at least one of power transmitting element among the plurality of power transmitting elements.

18. The wireless power transmitting method of claim 10, further comprising stopping supplying power to the plurality of power transmitting elements except to the selected at least one power transmitting element, in response to the at least one power transmitting element selected based on the ID information of the first target device.

19. A non-transitory computer-readable storage medium storing instructions, which when executed by a processor, cause the processor to implement the method of claim 10.