| abstract |
(57) [Summary] [Problem] To provide an electrode-wound battery capable of suppressing the manufacturing cost and adopting an excellent volumetric efficiency by adopting a simple current collection processing method. SOLUTION: In an electrode wound type battery having an electrode body formed by winding the electrode sheets 10 and 20 around a winding core 50, one end in the longitudinal direction located on the winding center side of the electrode sheets 10 and 20. A part of the electrode mixture layer non-formed portions 13 and 23 is provided in the portion, and the electrode mixture non-formed portions 13 and 23 are joined to the current collecting terminal portions 51 and 52 of the wound core 50. I do. |