Electrode Assembly Wrapping Device, Wrapping Method, and Electrode Assembly Manufactured According to the Same

A method of wrapping an electrode assembly, the method comprising:

• seating a cut first film above a plurality of sealing bars on an upper surface of a lower stage;
• aligning and seating an electrode assembly above the first film;
• and
• lowering an upper stage so that a plurality of sealing bars on a bottom surface of the upper stage contact the electrode assembly;
• lowering the lower stage and the upper stage while the lower stage and the upper stage are in close contact with the electrode assembly, so that a pair of side sealing blocks protruding from sides of the sealing bars adhere the first film to sides of the electrode assembly, wherein the sealing bars of the lower stage and the side sealing blocks are operated to attach the first film to a bottom surface and the sides of the electrode assembly;
• aligning and seating a cut second film on an upper surface of the electrode assembly with the upper stage deviated with respect to the lower stage;
• lowering the upper stage so that a plurality of sealing bars in the upper stage contact the second film;
• and
• lowering the lower stage and the upper stage below the sealing blocks while the lower stage and the upper stage are in close contact with the electrode assembly, and subsequently raising the lower stage and the upper stage such that the side sealing blocks adhere the second film protruding from the sides of the sealing bars to the sides of the electrode assembly, wherein the sealing bars of the upper stage and the side sealing blocks are operated to attach the second film to the upper surface and sides of the electrode assembly.

An electrode assembly, comprising:

• a plurality of battery cells stacked therein;
• a first film attached to a bottom surface and opposite side surfaces of the electrode assembly;
• and
• a second film attached to an upper surface and the opposite side surfaces of the electrode assembly.