Wireless power transmitting device and method for controlling the same

• US 10,148,320 B2
• Filed: 03/31/2017
• Issued: 12/04/2018
• Est. Priority Date: 03/31/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shin, Jae-Hyuck, Lee, Kyung-Woo, Lee, Sang-Wook, Kim, Chang-Hyun
• Primary Examiner(s): Wendell, Andrew
• Application Number:
  US15/475,267
• Publication Number:
  US 20170288739A1
• Time in Patent Office: 613 Days
• CPC Class Codes: H04B 17/101 for measurement of specific parameters of the transmitter or components thereof
• CPC Class Codes: H04B 17/102 Power radiated at antenna
• CPC Class Codes: H04B 17/327 Received signal code power [RSCP]
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04M 15/8207 Time based data metric aspects, e.g. VoIP or circuit switched packet data
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/24 Accounting or billing
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity

Abstract

Methods and apparatuses are provided for controlling a wireless power transmitting device. Information is received about a position of an electronic device from another wireless power transmitting device. Power is transmitted to the electronic device using the information about the position of the electronic device received from the other wireless power transmitting device.

Claims

1. A first wireless power transmitting device, comprising:

a plurality of power transmission antennas;

a communication circuit; and

a processor configured to;

control to receive, through the communication circuit, information about a first direction of a second wireless power transmitting device toward an electronic device from the second wireless power transmitting device,

identify a second direction of the first wireless power transmitting device toward the electronic device using the first direction, and

control to wirelessly transmit, through the plurality of power transmission antennas, power to the second direction for charging the electronic device.

2. The first wireless power transmitting device of claim 1, wherein the processor is further configured to control to form, through the plurality of power transmission antennas, a radio frequency (RF) wave in the second direction and determine whether or not to adjust a magnitude of the RF wave using received power-related information of the electronic device that is received through the communication circuit, while forming the RF wave.

3. The first wireless power transmitting device of claim 2, wherein the processor is further configured to maintain the magnitude of the RF wave when the received power-related information of the electronic device meets a preset condition, and to adjust the magnitude of the RF wave when the received power-related information of the electronic device does not meet the preset condition.

4. The first wireless power transmitting device of claim 1, wherein the processor is further configured to transmit, through the plurality of power transmission antennas, the power to the electronic device using the first direction, a position of the first wireless power transmitting device, and a position of the second wireless power transmitting device.

5. The first wireless power transmitting device of claim 1, wherein the processor is further configured to receive, through the communication circuit, a position of the electronic device with respect to the second wireless power transmitting device, and wherein the processor is further configured to determine the position of the electronic device with respect to the first wireless power transmitting device using a position of the electronic device with respect to the second wireless power transmitting device, a position of the second wireless power transmitting device, and a position of the first wireless power transmitting device, and to control the plurality of power transmission antennas to transmit the power to the electronic device based on the position of the electronic device with respect to the first wireless power transmitting device.

6. The first wireless power transmitting device of claim 1, wherein the first wireless power transmitting device is further configured to receive the position of the electronic device with respect to a point in an area where the first wireless power transmitting device and the second wireless power transmitting device are positioned, and wherein the processor is further configured to control the plurality of power transmission antennas to transmit the power to the electronic device based on a position of the electronic device with respect to the second wireless power transmitting device.

7. The first wireless power transmitting device of claim 1, further comprising a memory configured to store information about charging of the electronic device including at least one of a time charged, an amount charged, and an amount billed for the electronic device.

8. The first wireless power transmitting device of claim 7, wherein, upon receiving a request for the information about the charging of the electronic device, the processor is further configured to provide, through the communication circuit, the information about the charging of the electronic device or send the information about the charging of the electronic device to a managing server.

9. The first wireless power transmitting device of claim 1, wherein the processor is further configured to control initiation of the transmission of the power to the electronic device when a handoff signal for the electronic device is received from the second wireless power transmitting device through the communication circuit.

10. A second wireless power transmitting device, comprising:

a plurality of power transmission antennas;

a plurality of communication antennas; and

a processor configured to;

receive, through each of the plurality of communication antennas, a first communication signal from an electronic device,

determine a direction toward which the electronic device is positioned based on each of a plurality of time points for reception of the first communication signal by each of the plurality of communication antennas,

control to transmit, through the plurality of power transmission antennas, power to the electronic device using the direction toward which the electronic device is positioned, and

send a second communication signal including the direction a first wireless power transmitting device.

11. The second wireless power transmitting device of claim 10, wherein the processor is further configured to determine a distance from the second wireless power transmitting device to the electronic device and send a third communication signal including the distance to the other wireless power transmitting device.

12. The second wireless power transmitting device of claim 11, wherein the processor is further configured to compare a transmission strength included in the first communication signal with a reception strength of the first communication signal, and determine the distance according to a result of the comparison.

13. The second wireless power transmitting device of claim 11, wherein the processor is further configured to form, through the plurality of power transmission antennas, a radio frequency (RF) wave in the direction toward which the electronic device is positioned, and determine the distance using received power-related information of the electronic device that is received from the plurality of communication antennas upon forming the RF wave.

14. The second wireless power transmitting device of claim 13, wherein the processor is further configured to maintain a magnitude of the RF wave when the received power-related information of the electronic device meets a preset condition, and to adjust the magnitude of the RF wave when the received power-related information of the electronic device does not meet the preset condition.

15. The second wireless power transmitting device of claim 10, wherein the processor is further configured to send a handoff signal to the other wireless power transmitting device through the plurality of communication antennas when a handoff condition is met.

16. The second wireless power transmitting device of claim 15, wherein the plurality of communication antennas is further configured to receive a fourth communication signal including received power-related information of the electronic device, and wherein the processor is further configured to send the handoff signal when at least one of a current, a voltage, and a power included in the received power-related information is less than a preset threshold.

17. The second wireless power transmitting device of claim 15, wherein the processor is further configured to stop transmitting the power after sending the handoff signal.

18. The second wireless power transmitting device of claim 15, wherein the processor is further configured to stop transmitting the power when a handoff complete signal is received through the plurality of communication antennas.