Stack and folding-typed electrode assembly and method for preparation of the same
First Claim
1. 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.
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Accused Products
Abstract
Disclosed herein is 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 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 outermost electrodes forming the outside of the electrode assembly, respectively, wherein the method including a step of continuously supplying a cathode sheet, an anode sheet, a first separator sheet, and a second separator sheet, 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, a step of arranging cathode tabs and anode tabs at the respective stages, while the cathode tabs and the anode tabs are opposite to each other, and arranging electrode tabs having the same polarity between the neighboring stages, while the electrode tabs are opposite to each other, such that the electrode tabs having the same polarity are located all together at predetermined positions of the wound electrode assembly, and a step of supplying electrodes the number of which is odd from two electrode sheets and electrodes the number of which is even from one electrode sheet.
5 Citations
25 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification