Battery cooling control system and method thereof

1 . A battery cooling control system, comprising:

an electric water pump (EWP) configured to circulate coolant to cool a battery;

a chiller configured to cool the coolant; and

a controller electrically connected with the EWP and the chiller,

wherein the controller is configured to:

enter a battery cooling control mode to monitor a current temperature of the battery, when battery charging is scheduled,

determine the cooling control mode based on the current temperature of the battery, and

control cooling using at least one of the EWP or the chiller depending on the determined cooling control mode.

2 . The battery cooling control system of claim 1 , wherein the controller enters a first cooling control mode to control a driving revolution per minute (RPM) of the EWP with reference to a previously stored cooling map depending on a change in temperature of the battery, when the current temperature of the battery is greater than or equal to a first reference temperature, and

wherein the first reference temperature is a temperature for having a maximum charging current based on a battery state of charge (SOC).

3 . The battery cooling control system of claim 2 , wherein the controller starts driving of the EWP and stops driving the chiller, when entering the first cooling control mode.

4 . The battery cooling control system of claim 2 , wherein the controller enters a second cooling control mode to control the EWP and the chiller, when the current temperature of the battery is greater than or equal to a second reference temperature, in the first cooling control mode, and

wherein the second reference temperature is a criterion for determining whether to drive the chiller.

5 . The battery cooling control system of claim 4 , wherein the controller maintains the second cooling control mode or switches to the first cooling control mode based on a result of comparing the current temperature of the battery with the second reference temperature, in the second cooling control mode.

6 . The battery cooling control system of claim 4 , wherein the controller calculates a target RPM for maintaining the current temperature of the battery as the first reference temperature, when entering the second cooling control mode, and controls a driving RPM of the chiller based on the target RPM.

7 . The battery cooling control system of claim 4 , wherein the controller maintains the second cooling control mode, when the current temperature of the battery is greater than or equal to the second reference temperature, in the second cooling control mode, and switches from the second cooling control mode to the first cooling control mode, when the current temperature of the battery is less than the second reference temperature.

8 . The battery cooling control system of claim 4 , wherein the controller suppresses driving of the EWP and the chiller, when the current temperature of the battery is less than the first reference temperature.

9 . The battery cooling control system of claim 1 , further comprising:

a navigator configured to search for a charging station based on a battery SOC and a driving route and set the searched charging station to a charging destination, when the battery SOC is less than or equal to a predetermined threshold while driving or when there is a request by a user,

wherein the controller calculates a remaining driving distance to the charging destination and a charging destination arrival time based on a current position of a vehicle.

10 . The battery cooling control system of claim 9 , wherein the controller stops battery cooling control, when the vehicle arrives at the charging destination.

11 . A battery cooling control method, comprising:

entering, by a controller, a battery cooling control mode to monitor a current temperature of a battery, when battery charging is scheduled;

determining, by the controller, the cooling control mode based on the current temperature of the battery; and

controlling, by the controller, cooling using at least one of an EWP or a chiller depending on the cooling control mode.

12 . The battery cooling control method of claim 11 , wherein determining the cooling control mode includes:

determining, by the controller, the cooling control mode as a first cooling control mode, when the current temperature of the battery is greater than or equal to a first reference temperature;

determining, by the controller, the cooling control mode as a second cooling control mode, when the current temperature of the battery is greater than or equal to a second reference temperature, in the first cooling control mode; and

maintaining, by the controller, the second cooling control mode or switching to the first cooling control mode based on a result of comparing the current temperature of the battery with the second reference temperature, in the second cooling control mode.

13 . The battery cooling control method of claim 12 , wherein the first reference temperature is a temperature for having a maximum charging current based on a battery SOC, and

wherein the second reference temperature is a criterion for determining whether to drive the chiller.

14 . The battery cooling control method of claim 12 , wherein controlling the cooling includes:

starting, by the controller, driving of the EWP and stopping driving the chiller, when entering the first cooling control mode.

15 . The battery cooling control method of claim 14 , wherein controlling the cooling further includes:

controlling, by the controller, a driving RPM of the EWP with reference to a previously stored cooling map depending on a change in temperature of the battery in the first cooling control mode.

16 . The battery cooling control method of claim 12 , wherein controlling the cooling includes:

calculating, by the controller, a target RPM for maintaining the current temperature of the battery as the first reference temperature when entering the second cooling control mode; and

controlling, by the controller, a driving RPM of the chiller based on the target RPM.

17 . The battery cooling control method of claim 12 , further comprising:

suppressing, by the controller, driving of the EWP and the chiller, when the current temperature of the battery is less than the first reference temperature.

18 . The battery cooling control method of claim 12 , wherein maintaining the second cooling control mode or switching to the first cooling control mode includes:

maintaining, by the controller, the second cooling control mode, when the current temperature of the battery is greater than or equal to the second reference temperature; and

switching, by the controller, from the second cooling control mode to the first cooling control mode, when the current temperature of the battery is less than the second reference temperature.

19 . The battery cooling control method of claim 11 , wherein monitoring the current temperature of the battery includes:

searching, by a navigator, for a charging station based on a battery SOC and a driving route and setting, by the navigator, the searched charging station to a charging destination, when a battery SOC is less than or equal to a predetermined threshold while driving or when there is a request by a user; and

calculating, by the controller, a remaining driving distance to the charging destination and a charging destination arrival time based on a current position of a vehicle.

20 . The battery cooling control method of claim 19 , further comprising:

stopping, by the controller, battery cooling control, when the vehicle arrives at the charging destination.