Closed-Loop Cooling Device for Batteries

Provided is a closed-loop cooling device for batteries, including: a housing including components of the cooling device for batteries disposed therein and sealed to prevent outer air from being introduced thereinto; a battery module disposed inside the housing; an inlet duct including an intake port through which cooled gas is introduced into the battery module; a blower fan including an exhaust port through which gas present inside the battery module is discharged and sucking and discharging the gas; a loop duct having one side connected to the exhaust port and the other side connected to the intake port to deliver the gas; a heat exchanger connected to the loop duct to cool heated gas; and a pipe through which a cooling fluid to cool the heat exchanger moves.