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

Abstract: Disclosed are an electrode assembly, a cylindrical battery cell, and a battery pack and a vehicle comprising same. The electrode assembly is a jelly roll-type electrode assembly having a structure in which first and second electrode plates having a sheet shape and a separator interposed therebetween are wound in one direction, wherein at least one of the first and second electrode plates includes an uncoated portion on a long side end that is not coated with an active material layer. At least a portion of the uncoated portion is used as an electrode tab. In addition, the uncoated portion includes a core-side uncoated portion adjacent to a core of the electrode assembly, an outer circumference-side uncoated portion adjacent to the outer circumferential surface of the electrode assembly; and a middle uncoated portion interposed between the core-side uncoated portion and the outer circumference-side uncoated portion. Preferably, at least one of the core-side uncoated portion and the outer circumference-side uncoated portion has a relatively smaller height in the winding axis direction than the middle uncoated portion.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents