Secondary Battery, And Battery Pack And Vehicle Comprising Same

Abstract: The present specification provides a secondary battery comprising: an electrode assembly formed by stacking and winding a first electrode, a separation film and a second electrode, the first electrode including a first electrode current collector and an electrode active material layer provided on the first electrode current collector, and a long side end, according to the winding direction of the current collector, including an uncoated part of the first electrode in which the electrode active material layer is not provided; and a current collector plate provided at one end of the electrode assembly to which the uncoated part of the first electrode is exposed, and which includes a central part corresponding to a winding core of the electrode assembly, and two or more legs which have one end connected to the central part, and which extend in the outward direction of the electrode assembly, wherein the central part includes a current collector plate hole.

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