BATTERY PACK INCLUDING HEAT CONDUCTION MEDIUM WITH LOUVER FIN SHAPE

Disclosed is a battery pack, which includes a plurality of battery modules; a tray giving a space where the plurality of battery modules are placed; a plurality of beam frames installed to traverse an upper surface of the tray to partition spaces where the plurality of battery modules are capable of being individually placed; and a plurality of heatsinks formed to have a hollow structure through which a coolant flows, the plurality of heatsinks being selectively coupled to a part of the plurality of beam frames so as to be disposed to face a side surface of the battery modules, respectively, wherein a heat conduction medium having a louver structure is interposed at a thermal interface of the heatsink and the battery module.