Battery Cell And Battery Module Including Same

Abstract: A battery cell according to an embodiment of the present invention comprises: a battery case which includes a reception portion in which an electrode assembly is mounted, and includes a sealing portion having a structure, the outer periphery of which is sealed; an electrode lead which is electrically connected to an electrode tab included in the electrode assembly and which protrudes out of the battery case through the sealing portion; and a lead film positioned on a portion of at least one of the upper portion and the lower portion of the electrode lead, the portion corresponding to the sealing portion, wherein the lead film has a recessed portion indented toward the outer side of the battery case, and the recessed portion is open toward the inside of the battery case, and the sealing portion positioned on a gas discharging portion of the recessed portion includes an indented sealing portion indented in a direction from the outer side to the inside of the battery case, and the indented sealing portion does not overlap at least a portion of the gas discharging portion on a plane.

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