MANUFACTURING METHOD OF CURVED SECONDARY BATTERY

The present disclosure relates to a method of manufacturing a curved secondary battery having a target radius of curvature, the method comprising the steps of:(a) incorporating an electrode assembly including a cathode, an anode, and a separator interposed between the cathode and the anode into a battery case together with an electrolyte to manufacture a secondary battery;(b) subjecting the secondary battery to a first activation and degassing it;(c) subjecting the degassed secondary battery to a first hot press so as to have a first radius of curvature;(d) subjecting the secondary battery passed through the first hot press step to a second activation; and(e) subjecting the secondary battery passed through the second activation to a second hot press so as to have a second radius of curvature.