METHOD FOR PREPARING A JELLY-ROLL TYPE ELECTRODE ASSEMBLY AND A SECONDARY BATTERY

摘要

The present invention relates to a method for manufacturing a jelly-roll type electrode assembly, and provides a method for manufacturing an electrode assembly, the method comprising: a notching step of forming a plurality of electrode units by notching each unidirectionally long cathode and anode into a predetermined size and shape, and notching the electrode units so as to be electrically connected to each other by connecting units at both ends of the electrode units; a stacking step of forming a unit cell by arranging the cathodes and anodes on top of each other with a separation film being a boundary; and a winding step of winding the unit cell by bending the connecting unit so that the electrode units of the cathodes and anodes can lie on top of each other. Furthermore, the present invention provides a method for manufacturing a secondary battery using the obtained electrode assembly. In manufacturing the jelly-roll type electrode assembly and polymer secondary battery, the simplification of the production process of which is easy according to the present invention, it is possible to manufacture a jelly-roll type electrode assembly and a polymer secondary battery having excellent design flexibility. Furthermore, the purpose of the present invention is to provide an efficient method for processing a separation film used for manufacturing an electrode assembly so as to conform to the shape of the electrode assembly.