BATTERY MODULE AND BATTERY PACK COMPRISING SAME

Disclosed is a battery module, which includes a cell assembly including a plurality of secondary batteries and having a fluid path formed between the secondary batteries; an inlet duct located at one side surface of the cell assembly so as to cover the one side surface of the cell assembly, and having an inlet port such that the fluid introduced through the inlet port flows into the fluid path; an outlet duct located at the other side surface of the cell assembly so as to cover the other side surface of the cell assembly, and having an outlet port such that the fluid discharged from the fluid path flows out through the outlet port; and an entrance cover installed to at least one of the inlet port and the outlet port, and having a plurality of ribs formed in a plate shape and slantly arranged so that an inner and outer direction of the ribs is inclined with a predetermined angle from a direction parallel to the ground, wherein at least one of inner and outer ends of at least one of the plurality of ribs is bent.