Patent ID: 7931980

Claim:
An electrode assembly, comprising: a first electrode plate comprising a first electrode collector, a first electrode coated portion, a first electrode uncoated portion formed on at least one side of the first electrode plate, and a first electrode tab formed on the first electrode uncoated portion of a first side of the first electrode plate; a second electrode plate comprising a second electrode collector, a second electrode coated portion, a second electrode uncoated portion formed on at least one side of the second electrode plate, and a second electrode tab formed on the second electrode uncoated portion of a first side of the second electrode plate; and a first separator for insulating the first electrode plate and second electrode plate from each other; and an insulation tape that is attached to the first separator; wherein the first separator is wound with the first electrode plate and second electrode plate to insulate them from each other, wherein the insulation tape overlaps at least one of the first electrode tab and the second electrode tab, wherein a second side of the first electrode plate is opposite the first side of the first electrode plate, wherein a second side of the second electrode plate is opposite the first side of the second electrode plate, wherein the insulating tape is coupled to a surface of the first separator facing at least one of the second side of the first electrode plate and the second side of the second electrode plate, and wherein the insulation tape is attached to at least an end of the separator corresponding to the position of the first electrode tab or the second electrode tab to at least an end of the separator to prevent the separator from contracting.