NOVELTY - The device has a curved structure formed at a position of an outside of the device, where a secondary battery comprises an external appearance corresponding to a shape of the curved structure is mounted at the position of the device at which the curved structure is formed. The secondary battery includes battery cell that comprises a stacked type electrode assembly comprising a cathode, an anode and a separator that is placed between the cathode and the anode mounted in a battery case or a battery pack that comprises the battery cell mounted in a pack case.    USE - Electric device e.g. mobile phone, portable computer, laptop computer, netbook computer, smartphone, smart pad, tablet personal computer (PC), light electric vehicle (LEV), electric vehicle, hybrid electric vehicle, plug-in hybrid electric vehicle and a power storage device (all claimed).    ADVANTAGE - The device is manufactured based on various designs including a curved structure and a secondary battery such that an external appearance of which corresponds to the curved structure of the device is mounted in the device, so that inner space of the device is efficiently used, thus reducing volume of the devices. The device is designed with a compact structure based on various designs while maintaining more stable and increased electrical capacity. The device allows a cathode plate, separator plate, and the anode plate to be laminated in unit of each electrode group to minimize expansion in volume of the stacked type electrode assembly due to swelling.    DETAILED DESCRIPTION - The battery cell is a pouch-shaped battery. The secondary battery is a lithium secondary battery that is be classified as cylindrical secondary battery, prismatic secondary battery and pouch-shaped secondary battery. The battery case is formed of a laminate sheet comprising a metal layer and a resin layer. The battery case is a pouch-shaped battery case.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a battery cell.    Length of stacked type electrode assembly (L1)    Round corner (R1)    Width of stacked type electrode assembly (W1)    Electrode terminals (140, 141)    Side face (163)    Battery cell (182)