BATTERY MODULE AND BATTERY PACK

A battery module () comprising a plurality of battery cells (), a busbar assembly () configured to electrically couple the battery cells (), a housing () having an inner space (), and the plurality of battery cells () being arranged in the inner space (), a plurality of recesses () in the inner space () of the housing (), the battery cells () being arranged towards the recesses (), wherein the recess () has rotationally asymmetric shape relative to a central axis () of the corresponding battery cell (), and a filler () arranged in the recess () and attached to the battery cell (), whereby the recess () prevents the filler () and the battery cell () being rotated by the rotationally asymmetric shape of the recess ().