Battery cooling system and method for controlling the same

A method of controlling a battery cooling system, the method comprising:

• detecting a first temperature which is the temperature of aft of the environment where the battery cooling system is located;
• comparing the first temperature with a first predetermined reference temperature in a controller;
• controlling a flow speed of a coolant to flow into a battery system;
• and providing a signal to a control valve so as to control a flow direction of the coolant;
• further comprising supplying the coolant passing through a cooling fan to the battery system connected to the cooling fan so as to cool the battery system, wherein the controlling is performed with the cooling fan.

A battery cooling system, comprising:

• a cooling fan connected to a battery system and configured to control a flow speed of a coolant to flow into the battery system;
• a reservoir configured to store the coolant;
• first to fourth coolant paths;
• a control valve configured to receive the coolant from the environment via the first coolant path or from the reservoir;
• a heat exchanger connected to the cooling fan via the third coolant path and configured to lower the temperature of the coolant, wherein the control valve is further configured to selectively supply the coolant to one of the heat exchanger via the second coolant path and the cooling fan via the fourth coolant path;
• and
• a controller configured to i) compare a first temperature, which is the temperature of air of the environment where the battery cooling system is located, with a first predetermined reference temperature and ii) control the control valve based on the comparison.