Electronic apparatus, charge controlling method, and computer-readable recording medium

1. An electronic apparatus comprising:

a battery;

a charging circuit configured to charge the battery using power received from an external power source; and

a controller configured to:

control the charging circuit to charge the battery with a first current until a voltage of the battery becomes equal to a first target voltage,

based on the voltage of the battery being equal to or higher than the first target voltage, control the charging circuit to stop charging the battery during a preset period, and

after the preset period, control the charging circuit to charge the battery with a second current lower than the first current until the voltage of the battery becomes equal to a second target voltage greater than the first target voltage.

2. The electronic apparatus as claimed in claim 1 , wherein the controller is further configured to control the charging circuit to charge the battery with a constant voltage corresponding to the second target voltage based on the voltage of the battery becoming equal to the second target voltage.

3. The electronic apparatus as claimed in claim 1 , wherein the controller is further configured to control the charging circuit to charge the battery with a third current or to receive a discharge current from the battery, in the preset period provided between a period during which the battery is charged with the first current and a period during which the battery is charged with the second current, and

the third current is smaller than the first current or the second current.

4. The electronic apparatus as claimed in claim 3 , wherein the controller is further configured to control the charging circuit to charge the battery with the third current in the preset period,

the third current comprises current of different levels, and

the preset period includes a plurality of time sections in which the battery is charged with the current of different levels, respectively.

5. The electronic apparatus as claimed in claim 1 , wherein the preset period is more than 0 seconds and less than 60 seconds.

6. The electronic apparatus as claimed in claim 1 , wherein the controller is further configured to control to measure the voltage of the battery in the preset period.

7. The electronic apparatus as claimed in claim 1 , further comprising a wireless charging unit configured to receive the power wirelessly from the external power source and charge the battery by converting the received power to a power having at least one of the first current or the second current, respectively, under a control of the controller.

8. A charge controlling method of an electronic apparatus including a battery, the charge controlling method comprising:

receiving a power from an external power source;

charging the battery with a first current, until a voltage of the battery becomes equal to a first target voltage;

based on the voltage of the battery being equal to or higher than the first target voltage, stop charging the battery during a preset period; and

after the preset period, charging the battery with a second current lower than the first current until the voltage of the battery becomes equal to a second target voltage greater than, the first target voltage.

9. The charge controlling method as claimed in claim 8 , further comprising charging the battery with a constant voltage corresponding to the second, target voltage based on the voltage of the battery becoming equal to the second target voltage.

10. The charge controlling method as claimed in claim 8 , further comprising charging the battery with a third current or receiving a discharge current from the battery, in the preset period provided between a period during which the battery is charged with the first current and a period during which the battery is charged with the second current,

wherein the third current is smaller than the first current or the second current.

11. The charge controlling, method as claimed in claim 10 , further comprising charging the battery with the third current in the preset period,

wherein the third current comprises current of different levels, and

the preset period includes a plurality of time sections in which the battery is charged with the current of different levels, respectively.

12. The charge controlling method as claimed in claim 8 , wherein the preset period is more than 0 seconds and less than 60 seconds.

13. The charge controlling method as claimed in claim 8 , further comprising measuring the voltage of the battery in the preset period.

14. The charge controlling method as claimed in claim 8 , further comprising:

receiving the power wirelessly from the external power source; and

converting the received power to a power having at least one of the first current or the second current, respectively.

15. A non-transitory computer-readable recording medium including a program for executing a charge controlling method of an electronic apparatus including a battery, the charge controlling method comprising:

receiving a power from an external power source;

charging the battery with a first current until a voltage of the battery becomes equal to a first target voltage;

based on the voltage of the battery being equal to or higher than the first target voltage, stop charging of the battery during a preset period, and

after the preset period, charging the battery with a second current lower than the first current until the voltage of the battery becomes equal to a second target voltage greater than the first target voltage.

16. The non-transitory computer-readable recording medium as claimed in claim 15 , wherein the charge controlling method further comprises charging the battery with a third current or receiving a discharge current from the battery, in the preset period between a period during which the battery is charged with the first current and a period during which the battery is charged with the second current,

wherein the third current is smaller than the first current or the second current.