Cylindrical Battery Cell Having Spiral Welding Part, And Battery Module Comprising Same

Abstract: The present invention relates to a cylindrical battery cell having a cap assembly mounted at the upper end of a battery case in which an electrode assembly is accommodated, wherein the upper end of the battery case has a crimping part, which wraps around the outer periphery of the cap assembly and is bent toward the center, the crimping part is an anode terminal, the cap assembly has a central top cap, which is a cathode terminal, and the anode terminal and/or the cathode terminal has a discontinuous spiral welding part. Provided is the cylindrical battery cell having improved safety by preventing over-welding at the cathode terminal and the anode terminal.

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