Cylindrical Battery Cell, And Battery Pack And Vehicle Comprising Same

Abstract: A cylindrical battery cell comprises a battery can which receives a jelly-roll-shaped electrode assembly therein, and a cap which covers and closes an open end of the battery can. The cap is joined to an electrode tab of the electrode assembly. The cap has two or more electrode connection parts, and each of the electrode connection parts protrudes toward the inside of the battery can in an axial direction. The electrode connection parts are spaced apart from each other in a circumferential direction with reference to the center of the cap, and at least two electrode connection parts are arranged to face each other with reference to the center of the cap. The cap functions as both a current collector and a cap, so that energy density can be increased. Manufacturing methods together with a battery pack comprising the battery cell and a vehicle equipped with the battery pack are also disclosed.

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