BATTERY CELL AND BATTERY MODULE COMPRISING SAME

Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case through the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead. The lead film has a dented portion recessed in an outer direction of the battery case, the dented portion is open toward the inside of the battery case, the sealing portion located on a gas discharge portion of the dented portion has an indented sealing portion recessed inward at an outer side of the battery case, and the indented sealing portion does not overlap with at least a part of the gas discharge portion on a plane.