System and method for controlling charging of plug-in vehicle
View Patent ↗A system and method for controlling charging of plug-in vehicle are provided to charge a high-voltage battery mounted in the vehicle by converting AC power into DC power using an OBC. The method includes determining whether the high-voltage battery is charged by the operation of the OBC and whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the high-voltage battery is charged to determine whether to cool the high-voltage battery. Additionally, whether the temperature of the high-voltage battery is greater than a predetermined failure determination temperature is determined to determine whether the high-voltage battery is abnormal when the temperature of the high-voltage battery is greater than the reference cooling temperature. A battery cooling fan mounted in the vehicle is maximally driven to cool the high-voltage battery when the temperature of the high-voltage battery is greater than the failure determination temperature.
1. A method for controlling charging of a plug-in vehicle, to charge a high-voltage battery mounted in the plug-in vehicle by converting alternating current (AC) power into direct current (DC) power using an on-board charger (OBC), comprising:
determining, by a controller, whether the high-voltage battery is charged by an operation of the OBC;
determining, by the controller, whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the high-voltage battery is charged, to determine whether to cool the high-voltage battery;
determining, by the controller, whether the temperature of the high-voltage battery is greater than a predetermined failure determination temperature to detect a failure of the high-voltage battery when the temperature of the high-voltage battery is greater than the reference cooling temperature;
operating, by the controller, a battery cooling fan mounted in the vehicle at a maximum level to cool the high-voltage battery when the high-voltage battery is charged and the temperature of the high-voltage battery is greater than the failure determination temperature;
stopping, by the controller, the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the failure determination temperature; and
determining, by the controller, whether the vehicle is being driven before determining whether the high-voltage battery is charged,
wherein the determining of whether the high-voltage battery is charged is performed in response to determining that the vehicle is not being driven.
2. The method of claim 1 , wherein the failure determination temperature is greater than the reference cooling temperature.
3. The method of claim 1 , further comprising:
stopping, by the controller, the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the reference cooling temperature.
4. The method of claim 1 , wherein the method returns to the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the high-voltage battery is charged, after the battery cooling fan is operated at the maximum level.
5. The method of claim 1 , further comprising:
stopping, by the controller, the operation of the battery cooling fan, in response to determining that the high-voltage battery is not charged by the operation of the OBC.
6. The method of claim 5 , further comprising:
operating, by the controller, the battery cooling fan when the temperature of the high-voltage battery is greater than the reference cooling temperature.
7. The method of claim 1 , further comprising:
determining, by the controller, whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being driven to determine whether to cool the high-voltage battery; and
operating, by the controller, the battery cooling fan in a multistage manner when the temperature of the high-voltage battery is greater than the reference cooling temperature,
wherein the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being operated and the operation of the battery cooling fan in a multistage manner are performed in response to determining that the vehicle is being driven.
8. The method of claim 7 , wherein the method returns to the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being driven, after operating the battery cooling fan in a multistage manner.
9. The method of claim 7 , further comprising:
stopping, by the controller, the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the reference cooling temperature.
10. A system for controlling charging of a plug-in vehicle, to charge a high-voltage battery mounted in the plug-in vehicle by converting alternating current (AC) power into direct current (DC) power using an on-board charger (OBC), comprising:
a memory configured to store program instructions; and
a processor configured to execute the program instructions, the program instructions when executed configured to:
determine whether the high-voltage battery is charged by operation of the OBC;
determine whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the high-voltage battery is charged, to determine whether to cool the high-voltage battery;
determine whether the temperature of the high-voltage battery is greater than a predetermined failure determination temperature to detect a failure of the high-voltage battery when the temperature of the high-voltage battery is greater than the reference cooling temperature;
operate a battery cooling fan mounted in the vehicle at a maximum level to cool the high-voltage battery when the high-voltage battery is charged and the temperature of the high-voltage battery is greater than the failure determination temperature;
stop the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the failure determination temperature;
determine whether the vehicle is being driven before determining whether the high-voltage battery is charged,
wherein the determining of whether the high-voltage battery is charged is performed in response to determining that the vehicle is not being driven.
11. The system of claim 10 , wherein the failure determination temperature is greater than the reference cooling temperature.
12. The system of claim 10 , wherein the program instructions when executed are further configured to:
stop the operation of the battery cooling fan, in response to determining that the high-voltage battery is not charged by the operation of the OBC.
13. The system of claim 10 , wherein the program instructions when executed are further configured to:
stop the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the reference cooling temperature.
14. The system of claim 12 , wherein the program instructions when executed are further configured to:
operate the battery cooling fan when the temperature of the high-voltage battery is greater than the reference cooling temperature.
15. The system of claim 10 , wherein the program instructions when executed are further configured to:
return to the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the high-voltage battery is charged, after the battery cooling fan is operated at the maximum level.
16. The system of claim 10 , wherein the program instructions when executed are further configured to:
determine whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being driven to determine whether to cool the high-voltage battery; and
operate the battery cooling fan in a multistage manner when the temperature of the high-voltage battery is greater than the reference cooling temperature,
wherein the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being operated and the operation of the battery cooling fan in a multistage manner are performed in response to determining that the vehicle is being driven.
17. The system of claim 16 , wherein the program instructions when executed are further configured to:
return to the determining of whether the temperature of the high-voltage battery is greater than a predetermined reference cooling temperature while the vehicle is being driven, after operating the battery cooling fan in a multistage manner.
18. The system of claim 16 , wherein the program instructions when executed are further configured to:
stop the operation of the battery cooling fan, in response to determining that the temperature of the high-voltage battery is less than the reference cooling temperature.