Battery Cell And Battery Module Including Same

Abstract: A battery cell, according to one embodiment of the present invention, comprises: a battery case in which an electrode assembly is mounted in an accommodating part, and which includes a sealing part having a structure of which an outer periphery is sealed; an electrode lead which is electrically connected to an electrode tab included in the electrode assembly and protrudes outwardly from the battery case by passing through the sealing part; and a lead film which is located at a portion corresponding to the sealing part of at least one of an upper portion and a lower portion of the electrode lead, wherein the lead film is indented toward the outside of the battery case and has a recessed portion opened toward the inside of the battery case, and includes a coating layer located on a gas discharge portion of the lead film and containing a fluorine-based polymer.

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