BATTERY MODULE AND METHOD OF MANUFACTURING BATTERY MODULE

Disclosed herein are a battery module and a method of manufacturing the battery module. The battery module includes: a cell stack including a plurality of battery cells; an outer partition forming an external housing; an inner partition fixed to the outer partition and supporting a side surface of the cell stack; a movable end block supporting an outermost battery cell of the cell stack, and configured to move along the inner partition and apply pressure to the cell stack; and a movable partition functioning as an intermediate partition positioned between the outer partition and the inner partition, the movable partition being configured to have a same height as the outer partition and define a first internal space between the outer partition and the movable partition. The movable partition moves along the outer partition and varies a size of the first internal space.