According to an embodiment of the present disclosure, a battery module includes: a cartridge including an accommodation space therein; a plurality of battery cells placed in the accommodation space; a cooling unit configured to cool the battery cells; and a heat exchange unit configured to exchange heat with the cooling unit, wherein the heat exchange unit includes: a heat exchange chamber having an inner space; a lower cooling flow path located in the heat exchange chamber and through which a cooling fluid flows; an upper cooling flow path located above the lower cooling flow path and through which the cooling fluid supplied from the lower cooling flow path flows; and a connection flow path configured to supply the cooling fluid flowing in the lower cooling flow path to the upper cooling flow path.