DOUBLE-SIDED COOLING-TYPE BATTERY MODULE AND HEAT SINK INCLUDED THEREIN

A battery module according to the present disclosure may include: a plurality of cell assemblies including a plurality of battery cells; and a heat sink disposed between adjacent cell assemblies among the plurality of cell assemblies and having a plurality of cooling-medium channels through which a cooling medium flows and both surfaces configured in a planar shape to come into surface-contact with the cell assemblies.