Power supply device, vehicle having the same, and method of controlling the same

1. A power supply device comprising:

a solar generator;

a battery configured to:

supply power for driving at least one load; and;

perform a recharge;

a charge amount detector configured to detect a charge amount of the battery; and

a controller configured to:

perform charging control on the battery using electric energy generated by the solar generator, and

perform charging termination control on the battery when the detected charge amount of the battery is greater than or equal to a first reference charge amount,

wherein the controller is further configured to:

identify an accumulative value of current during charging and discharging of the battery;

identify a number of times the charge amount falls to a minimum charge or below; and

when the accumulative value of current exceeds a first reference value or the identified number of times exceeds a second reference value, determine that a condition for entry into a refresh mode for charging the battery to the first reference charge amount is satisfied.

2. The power supply device of claim 1 , wherein the power supply device further comprises:

a light amount detector configured to detect an amount of light on the solar generator,

wherein the controller is configured to:

identify the detected amount of light when the condition for entry into the refresh mode is determined to be satisfied;

when the identified amount of light is less than a first reference amount of light, not perform the charging control on the battery; and

when the identified amount of light is greater than or equal to a second reference amount of light, perform the charging control on the battery.

3. The power supply device of claim 2 , wherein the controller is configured to:

determine that the detected charge amount of the battery is greater than or equal to a second reference charge amount when the identified amount of light is greater than or equal to the first reference amount of light and less than the second reference amount of light; and

perform the charging control on the battery when the detected charge amount of the battery is determined to be greater than or equal to the second reference charge amount.

4. The power supply device of claim 3 , wherein the controller is configured to:

predict an amount of power generated by the solar generator based on the detected amount of light and a time remaining until a sunset when the detected charge amount of the battery is determined to be less than the second reference charge amount;

perform the charging control on the battery when a value of the predicted amount of power less an amount of power consumed by the at least one load is greater than or equal to zero; and

not perform charging control on the battery when the value of the predicted amount of power less the amount of power consumed by the at least one load is less than zero.

5. The power supply device of claim 1 , wherein the controller is configured to:

cancel the refresh mode when the detected charge amount of the battery is the first reference charge amount;

reset the accumulative value of current during charging and discharging of the battery; and

reset the identified number of times.

6. A vehicle comprising:

a solar generator;

a first battery configured to:

supply power for driving at least one load; and

perform a recharge;

a first charge amount detector configured to detect a charge amount of the first battery; and

a controller configured to:

perform charging control on the first battery using electric energy generated by the solar generator in a parked state;

determine whether the detected charge amount of the first battery is greater than or equal to a first reference charge amount during the charging control of the first battery; and

perform charging termination control on the first battery when the detected charge amount of the first battery is determined to be greater than or equal to the first reference charge amount,

wherein the controller is further configured to:

identify an accumulative value of current during charging and discharging of the first battery;

identify a number of times the charge amount of the first battery falls to a minimum charge or below;

identify a number of the ignitions; and

determine that a condition for entry into a refresh mode for charging the first battery to the first reference charge amount is satisfied when the accumulative value of current exceeds a first reference value, the identified number of times the charge amount falls to a minimum charge or below exceeds a second reference value, or the identified number of the ignitions exceeds a third reference value.

7. The vehicle of claim 6 , wherein the vehicle further comprises:

a light amount detector configured to detect an amount of light on the solar generator,

wherein the controller is configured to:

when the condition for entry into the refresh mode is determined to be satisfied, identify the detected amount of light;

when the identified amount of light is less than a first reference amount of light, not perform the charging control on the battery; and

when the identified amount of light is greater than or equal to a second reference amount of light, perform the charging control on the first battery.

8. The vehicle of claim 7 , wherein the controller is configured to:

determine whether the detected charge amount of the first battery is greater than or equal to a second reference charge amount when the identified amount of light is greater than or equal to the first reference amount of light and less than the second reference amount of light; and

perform the charging control on the first battery when the detected charge amount of the first battery is determined to be greater than or equal to the second reference charge amount.

9. The vehicle of claim 8 , wherein the controller is configured to:

predict an amount of power generated by the solar generator based on the detected amount of light and a time remaining until a sunset when the detected charge amount of the first battery is determined to be less than the second reference charge amount;

perform the charging control on the first battery when a value of the predicted amount of power less an amount of power consumed by the at least one load is greater than or equal to zero; and

not perform the charging control on the first battery when the value of the predicted amount of power less the amount of power consumed by the at least one load is less than zero.

10. The vehicle of claim 6 , wherein the controller is configured to:

cancel the refresh mode when the detected charge amount of the first battery reaches the first reference charge amount;

reset the accumulative value of current during charging and discharging of the first battery;

reset the identified number of times the charge amount falls to the minimum charge or below; and

reset the identified number of the ignitions.

11. The vehicle of claim 6 , wherein the vehicle further comprises:

a second battery;

a second charge amount detector configured to detect a charge amount of the second battery;

a switch configured to connect the solar generator to the first battery or the second batter; and

a light amount detector configured to detect an amount of light on the solar generator,

wherein the controller is configured to:

when the condition for entry into the refresh mode is determined to be satisfied, identify the detected amount of light;

when the identified amount of light is less than a first reference amount of light, not perform charging control on the first battery and the second battery; and

when the identified amount of light is greater than or equal to a second reference amount of light, perform charging control on the first battery and the second battery.

12. The vehicle of claim 11 , wherein the controller is configured to:

identify the detected charge amount of the first battery;

identify the detected charge amount of the second battery; and

when the charge amount of the first battery is greater than or equal to a second reference charge amount during the charging control of the first battery and the second battery, perform preferential charging control on the first battery.

13. The vehicle of claim 11 , wherein the controller is configured to:

identify the detected charge amount of the first battery;

identify the detected charge amount of the second battery; and

when the charge amount of the second battery is less than a second reference charge amount during the charging control of the first battery and the second battery, perform preferential charging control on the first battery.

14. The vehicle of claim 11 , wherein the controller is configured to:

identify the detected charge amount of the first battery;

identify the detected charge amount of the second battery; and

when the charge amount of the first battery is less than a second reference charge and the charge amount of the second battery is greater than or equal to the second reference charge amount during the charging control of the first battery and the second battery perform preferential charging control on the second battery.

15. The vehicle of claim 11 , wherein the vehicle further comprises:

an alternator,

wherein the controller is configured to:

when an ignition-on command is received, determine whether the detected charge amount is less than the first reference charge amount; and

when the detected charge amount is determined to be less than the first reference charge amount, control the alternator to charge the first battery.