Wireless charging method and electronic device implementing the same

1. A wireless charging method in a portable electronic device, the method comprising:

connecting wirelessly the portable electronic device with a wireless power supply device;

connecting the portable electronic device with at least one external device;

monitoring charging efficiency of a device being charged by the wireless power supply device;

when the charging efficiency is either equal to or smaller than a given first threshold, identifying a distance between the wireless power supply device and the device being charged; and

when the distance is either equal to or greater than a given second threshold, outputting a notification for indicating a need of movement;

wherein the portable electronic device is configured to supply electric power to the at least one external device, when the portable electronic device has a battery charging percentage greater than a given threshold.

2. The method of claim 1 , further comprising:

detecting a user input for requesting a stop of a charging process for at least one device selected from devices being currently charged by the wireless power supply device; and

transmitting a message for requesting a stop of the charging process for the selected at least one device to the wireless power supply device.

3. The method of claim 2 , further comprising:

displaying charging status information about each of the devices being charged.

4. The method of claim 3 , wherein the displaying of the charging status information includes one of:

transmitting a message for requesting the charging status information to an external device from among the devices being currently charged; and

receiving periodically the charging status information from the external device.

5. The method of claim 1 , further comprising:

displaying charging status information about each connected external device;

detecting a user input for selecting at least one of the connected external device; and

transmitting a message for the selected device to the wireless power supply device.

6. The method of claim 1 , further comprising:

when the distance is either equal to or smaller than the given second threshold and when a number of the devices being charged is either equal to or greater than a given number, outputting a notification for indicating the number of the devices being currently charged.

7. The method of claim 6 , further comprising:

when the distance is either equal to or smaller than the given second threshold and when the number of the devices being charged is either equal to or smaller than the given number, outputting a notification for indicating the need of an angle adjustment.

8. The method of claim 1 , further comprising:

monitoring charging efficiency of a device being charged by the wireless power supply device; and

when the charging efficiency is either equal to or smaller than a given first threshold, transmitting to the wireless power supply device a message for requesting a stop of a charging process for the device being charged.

9. The method of claim 1 , wherein the wireless power supply device is of a moveable type.

10. A portable electronic device comprising:

a battery;

a wireless charging unit configured to receive wireless electric power from a wireless power supply device and to charge the battery;

a short-range wireless communication unit configured to connect with at least one external device and to connect with the wireless power supply device;

a user interface unit configured to interact with a user, and

a control unit configured to monitor charging efficiency of a device being currently charged by the wireless power supply device, when the charging efficiency is either equal to or smaller than a given first threshold, identify a distance between the wireless power supply device and the device being charged, and when the distance is either equal to or greater than a given second threshold, control the user interface unit to output a notification for indicating a need of movement,

wherein the portable electronic device is configured to supply electric power to the at least one external device, when the portable electronic device has the battery charging percentage greater than a given threshold.

11. The portable electronic device of claim 10 ,

wherein the control unit is further configured to:

receive a user input from the user interface unit, the user input requesting a stop of a charging process for at least one selected from devices being charged by the wireless power supply device, and

control the short-range wireless communication unit to transmit a message for requesting a stop of the charging process for the selected device to the wireless power supply device.

12. The portable electronic device of claim 11 , wherein the control unit is further configured to control the user interface unit to display thereon charging status information about each of the devices being charged.

13. The portable electronic device of claim 12 , wherein the control unit is further configured to control the short-range wireless communication unit to transmit a message for requesting the charging status information to an external device from among the devices being charged, or receive periodically the charging status information from the external device through the short-range wireless communication unit.

14. The portable electronic device of claim 10 ,

wherein the control unit is further configured to:

control the user interface unit to display thereon charging status information about each connected external device,

detect a user input for selecting at least one of the connected external device through the user interface unit, and

control the short-range wireless communication unit to transmit a message for the selected external device to the wireless power supply device.

15. The portable electronic device of claim 10 , wherein the control unit is further configured, when the distance is either equal to or smaller than the given second threshold and when a number of the devices being charged is either equal to or greater than a given number, to control the user interface unit to output a notification for indicating the number of the devices being currently charged.

16. The portable electronic device of claim 15 , wherein the control unit is further configured, when the distance is either equal to or smaller than the given second threshold and when the number of the devices being charged is either equal to or smaller than the given number, to control the user interface unit to output a notification for indicating the need of an angle adjustment.

17. The portable electronic device of claim 10 , wherein the control unit is further configured to:

monitor charging efficiency of a device being currently charged by the wireless power supply device, and

when the charging efficiency is either equal to or smaller than a given first threshold, control the short-range wireless communication unit to transmit to the wireless power supply device a message for requesting a stop of a charging process for the device being charged.

18. The portable electronic device of claim 10 , wherein the wireless power supply device is of a moveable type.