BATTERY MODULE, VEHICULAR BATTERY PACK, AND ELECTRIC VEHICLE

A battery module (1) includes: a cell stack (2) in which multiple battery cells (2a) are stacked along a predetermined stacking direction (Do); a pair of end plates (3) disposed on both end faces of the cell stack (2) in the stacking direction (Do); and a mid-plate (4) disposed in an intermediate portion of the cell stack (2) in the stacking direction (Do). The mid-plate (4) has a pair of main faces (4a) each facing the battery cell (2a), multiple side faces (4b) each connecting outer edges of the pair of main faces (4a), and a recess (4d) extending in a cross direction Dw that intersects the stacking direction Do on at least one of the side faces (4b).