CYLINDRICAL SECONDARY BATTERY HAVING MULTILAYER-STRUCTURED BATTERY CASE, AND METHOD FOR MANUFACTURING SAME

The present invention relates to a cylindrical secondary battery having a multilayer-structured battery case and a method for manufacturing same, and more specifically, to the cylindrical secondary battery having the multilayer-structured battery case and the method for manufacturing same, wherein the cylindrical secondary battery comprises: an electrode assembly which includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, a positive electrode tab of which one side is connected to the positive electrode, and a negative electrode tab of which one side is connected to the negative electrode; a cap assembly including a current interrupting member that is disposed above the electrode assembly and interrupts currentwhen the pressure inside the battery rises, a safety vent connected to the upper end of the current interrupting member, and a top cap having a shape that protrudes upward, the lower surface of the outer circumferential surf