BATTERY MODULE HAVING PROTECTION STRUCTURE OF CELL STACK

A battery module according to an embodiment includes: a cell structure configured by stacking a plurality of secondary battery cells; a frame including at least one opening and configured to accommodate the cell structure in an inner space thereof through the opening; and a side plate covering the opening and including a protection cover disposed between the cell structure and the frame to cover the cell structure, wherein the protection cover may include a convex edge toward the inside of the cell structure.