Stack and folding-typed electrode assembly and method for preparation of the same

A method of locating a plurality of full cells constructed in a cathode/separator/anode structure, as basic units, on a separator sheet having a continuous length, further locating a unit electrode or a bi-cell on the separator sheet, and winding the full cells and either the unit electrode or the bi-cell to continuously manufacture a stacking/folding type electrode assembly constructed in a structure in which anodes are located at the outer most electrodes forming the outside of the electrode assembly, respectively, the method comprising:

• continuously supplying a cathode sheet to which a cathode active material is applied, an anode sheet to which an anode active material is applied, a first separator sheet disposed between a cathode and an anode of a full cell or a bi-cell, and a second separator sheet used to wind the full cells, the unit electrode, and the bi-cell, to manufacture the unit cells, successively arranging the unit cells on the second separator sheet from a first stage to an nth stage, and winding the unit cells;
• arranging cathode tabs all together at the right-side upper end or the left-side upper end of the electrode assembly, and arranging the anode tabs all together at the left-side upper end or the right-side upper end of the electrode assembly, arranging electrode tabs having the same polarity in a symmetrical position between the neighboring stages;
• and
• supplying an odd number of electrodes of the electrode assembly from two electrode sheets and an even number of electrodes of the electrode assembly from one electrode sheet.