Wireless power transmitter, electronic device receiving power wirelessly, and method for operating same
A wireless power transmitter according to various embodiments of the present invention can comprise a plurality of patch antennas, a coil, and a processor. The processor can control such that an electronic device is detected, the plurality of patch antennas and/or the coil is selected as a power transmission circuit for transmitting power for charging the electronic device, and power is transmitted by means of the plurality of patch antennas and/or the coil in accordance with the selection.
1. A wireless power transmitter comprising:
multiple patch antennas configured to transmit power to an electronic device according to a first charging method;
a coil configured to transmit power to the electronic device according to a second charging method;
a communication circuit; and
a processor,
wherein the processor is configured to:
control the wireless power transmitter to detect the electronic device,
based on detecting the electronic device, control the wireless power transmitter to transmit a first testing power through the multiple patch antennas and a second testing power through the coil,
based on transmitting the first testing power and the second testing power, receive, from the electronic device, through the communication circuit, information indicating at least one charging method for charging the electronic device, wherein the at least one charging method is at least one of the first charging method and the second charging method, and
based on the received information indicating the at least one charging method, select at least one power transmission circuit among the coil or the multiple patch antennas, and control the wireless power transmitter to transmit power for charging the electronic device using the selected at least one power transmission circuit.
2. The wireless power transmitter of claim 1 , wherein the processor is further configured to:
determine a distance between the wireless power transmitter and the electronic device, and
select, based on the distance, at least one of the coil or the multiple patch antennas, as a as the at least one power transmission circuit for charging the electronic device.
3. The wireless power transmitter of claim 2 , wherein the processor is further configured to:
based on the distance exceeding a threshold distance, select the multiple patch antennas as the at least one power transmission circuit for charging the electronic device, and
based on the distance being equal to or less than the threshold distance, select the coil as the at least one power transmission circuit for charging the electronic device.
4. The wireless power transmitter of claim 3 , wherein the processor is configured to:
based on the threshold distance corresponding to the electronic device, select the at least one power transmission circuit for charging the electronic device.
5. The wireless power transmitter of claim 1 ,
wherein the at least one charging method is determined by the electronic device based on a first magnitude, at which the first testing power is received in the electronic device, and a second magnitude, at which the second testing power is received in the electronic device.
6. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to receive, through the communication circuit, first information of a first magnitude, at which the first testing power is received in the electronic device, and second information of a second magnitude, at which the second testing power is received in the electronic device, and
select, using the received first information and the received second information, at least one of coil or the multiple patch antennas as the at least one power transmission circuit for charging the electronic device.
7. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to transmit a first transmission intensity of the first testing power and a second transmission intensity of the second testing power to the electronic device through the communication circuit, and
wherein the at least one charging method is determined by the electronic device based on a first transmission efficiency of the first testing power identified based on the first transmission intensity of the first testing power and a first reception intensity of the first testing power, and a second transmission efficiency of the second testing power identified based of the second transmission intensity of the second testing power and a second reception intensity of the second testing power.
8. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to:
receive, through the communication circuit, a first reception intensity of the first testing power in the electronic device and a second reception intensity of the second testing power in the electronic device,
determine a first transmission efficiency of the first testing power based on first transmission intensity of the first testing power and the first reception intensity of the first testing power,
determine a second transmission efficiency of the second testing power based on a second transmission intensity of the second testing power and the second reception intensity of the second testing power,
based on the first transmission efficiency of the first testing power and the second transmission efficiency of the second testing power, select at least one of the coil or the multiple patch antennas as the at least one power transmission circuit for charging the electronic device.
9. The wireless power transmitter of claim 1 , wherein the processor is further configured to:
based on transmitting of the first testing power and the second testing power, determine whether a specified protocol is violated, and
based on a determination result, select at least one of the coil or the multiple patch antennas as the at least one power transmission circuit for charging the electronic device.
10. The wireless power transmitter of claim 1 , wherein the processor is further configured to:
detect a living body located near the wireless power transmitter, and
based on whether the living body is influenced, select at least one of the coil or the multiple patch antennas as the at least one power transmission circuit for charging the electronic device.
11. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to:
receive information of the electronic device through the communication circuit, and
based on the received information of the electronic device, select at least one of the coil or the multiple patch antennas as the at least one power transmission circuit for charging the electronic device.
12. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to receive, through the communication circuit, the information indicating the at least one charging method specified via a user interface of the electronic device.
13. The wireless power transmitter of claim 1 ,
wherein the processor is further configured to transmit, to the electronic device, information of the selected at least one power transmission circuit for charging the electronic device.
14. The wireless power transmitter of claim 1 , wherein the processor is further configured to:
control the wireless power transmitter to transmit first power through the multiple patch antennas at a first time point, and
control the wireless power transmitter to transmit second power through the coil at a second time point.