METHOD FOR MANUFACTURING A ELECTRODE ASSEMBLY FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING A LITHIUM SECONDARY BATTERY AND SECONDARY BATTERY APPLYING THE SAME

摘要

PURPOSE: A manufacturing method of an electrode assembly is provided to prevent the formation of cracks of a positive active material by stress due to curvature when an electrode assembly is winded, thereby preventing short circuit of electrodes. CONSTITUTION: A manufacturing method of an electrode assembly comprises a step of arranging a positive electrode plate, a negative electrode plate, and a separator (S100); a step of forming a jelly roll by winding the positive electrode plate, the negative electrode plate, and the separator to form a jelly roll (S200); a step of drying the jelly roll (S300). The step of preparing the negative electrode plate comprises a step of spreading a negative active material on a negative current collector; a step of rolling the negative current collector; and a step of drying the rolled negative electrode current collector. The step of preparing the positive electrode plate comprises a step of spreading a positive active material on a positive current collector; and a step of rolling the positive electrode current collector. [Reference numerals] (S100) Step of arranging a positive electrode plate, a negative electrode plate, and a separator; (S200) Step of forming a jelly roll by winding the electrode assembly; (S300) Step of drying the jelly roll