BATTERY PACK OF STAIR-LIKE STRUCTURE

摘要

PURPOSE: A battery pack is provided to improve the capacity of a device per unit volume by including a stair-like structure of which the shape varies with the curvature of the device. CONSTITUTION: A battery pack (200) includes a two or more battery cells (110, 120, 130) laminated in a height direction, based on a plane; and includes one or more battery cells the size of which are the same or different from the size of the two or more battery cells. The laminate structure of the battery cells is at least one stair-like structure with a specific width and height. The stair-like structure is formed in the electrode terminal-formed part or an electrode terminal-non-formed part (150). The battery cell additionally includes an adhesive unit for attaching the battery cells to each other.