Electrode Assembly, Secondary Battery, Battery Pack And Automobile Comprising Same

Abstract: An electrode assembly of the present invention is an electrode assembly in which an anode, a cathode, and a separator interposed therebetween are wound around a winding axis to define a core and an outer circumferential surface, wherein an electrode, which is the anode or the cathode, is a sheet-shaped current collector having a long side and a short side, and includes a current collector including a non-coated portion at an end of the long side, wherein the non-coated portion itself includes an electrode tab defined section used as an electrode tab and at least one electrode tab undefined section not used as an electrode tab, wherein the maximum current path for the at least one electrode tab undefined section includes a width direction current path along the short side of the current collector and a longitudinal current path along the long side of the current collector, wherein when the length of the width direction current path and the length of the longitudinal current path are L1 and L2, respectively, the current path ratio (L2/L1) is 11 or less.

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