Patent ID: 8765298

Claim:
An electrode assembly comprising: a positive electrode plate comprising a positive electrode active material, a positive electrode tab and a positive electrode collector plate having a first surface and a second surface, a negative electrode plate comprising a negative electrode active material and a negative electrode tab; and a rectangular separator disposed between the positive electrode plate and the negative electrode plate, wherein a negative electrode cutoff portion provides a space disposed on the negative electrode plate corresponding to a position of the positive electrode tab, and a positive electrode cutoff portion provides a space disposed on the positive electrode plate corresponding to a position of the negative electrode tab; wherein the positive electrode tab is attached to the first surface of the positive electrode collector plate, a positive electrode active material is coated on the entire second surface of the positive electrode collector plate and the entire first surface of the positive electrode collector plate except for the portion of the first surface of the positive electrode collector plate on which the positive electrode tab is attached, and the positive electrode cutoff portion is disposed on a position of the positive electrode collector plate overlapping the negative electrode tab.