Method of manufacturing an electrode unit and the electrode unit

Electrode unit (30) includes a first electrode plate on which the first active material layer formed as (40), a first separator for covering the first surface of the first electrode plate (40) (50), the first electrode plate a second separator (60) covering the second surface (40). Further electrode unit (30) has a second electrode plate having different second active material layer having polarity is formed (70) from the first electrode plate (40). The first electrode plate (40) has a first joint portion of the first separator (50) (50a, 50b) and, a second junction of the second separator (60) (60a, 60b), that are joined in the first separator (50) and wrapped in a second separator (60). The edge of the second electrode plate (70), the second active material layer non-formation region in which the second active material layer is not formed (70N) is provided. The second active material layer non-formation region (70N) first joint (50a, 50b) or the second joint (60a, 60b) is either a bond.