BATTERY MODULE

A battery module can include a plurality of stacked battery cells, an inner venting sheet that is disposed at a side of the battery cells, the inner venting sheet including an inner notch part having a thickness smaller than a thickness of a peripheral area or having a cut shape in an area facing the battery cells, and an outer venting sheet disposed so that the inner venting sheet is between the battery cells and the outer venting sheet, the outer venting sheet including an outer notch part having a thickness smaller than a thickness of a peripheral area or having a cut shape.