Electrode Assembly, Cylindrical Battery Cell, And Battery Pack Comprising Same

Abstract: The present invention relates to an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, wherein a first side of the first electrode plate and a first side of the second electrode plate are arranged facing in opposite directions, a first side of the separator protrudes outside a second side of the first electrode plate and is disposed on an electrode active material portion of the second electrode plate, and a second side of the separator protrudes outside a second side of the second electrode plate and is disposed on a non-coated part of the first electrode plate. According to one aspect of the present invention, non-coated parts protruding from the top and bottom of the electrode assembly can be used as electrode tabs to reduce the internal resistance and increase the energy density of a battery cell. According to another aspect of the present invention, the structure of the non-coated part of the electrode assembly is improved to prevent interference, especially between the non-coated part of the electrode plate and the separator, in the formation process of a beading part of a battery can, and thus melting and damage of the separator are reduced when bending and welding the non-coated part.

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