Cooling device for battery cell and battery module comprising the same

A cooling device for battery cells comprising:

• a heat sink with a hollow structure disposed adjacent to at least one side of a battery cell assembly and having a channel formed therein through which a coolant flows, the battery cell assembly comprising a plurality of battery cells;
• and
• a cooling plate configured to carry out heat exchange with the battery cells, the cooling plate comprising a heat absorbing part interposed between the battery cells such that one surface or both surfaces come into contact with the battery cells, and a heat emitting part extending from the heat absorbing part and exposed to the channel, wherein the heat emitting part comprises plural bent surfaces with at least one bent surface arranged parallel to the channel, wherein the bent surfaces are arranged apart from each other at a predetermined interval with through-holes placed therebetween, and at least one through-hole through which the coolant goes.