| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric power storage device cell or the like for not easily causing deformation and breakage of a flat rolled electrode when bearing is applied to a flat surface, and maintaining high battery performance and stability over a long period of time. <P>SOLUTION: For a flat rolled electrode 4, a positive electrode 8 and a negative electrode 9 for which an electrode active material is applied to current collector foil, and a separator 11 are piled up and rolled into a flat shape. At positive electrode and negative electrode peripheral edge parts, respectively, side edge parts are electrically connected in a lamination direction, and a positive electrode terminal and a negative electrode terminal are connected. An exterior container 6 houses the flat rolled electrode, a connection part 12 between the positive electrode terminal and the positive electrode peripheral edge part, and a connection part 13 between the negative electrode terminal and the negative electrode peripheral edge part. A buffer material 5 is provided between the exterior container and the flat rolled electrode and the pair of connection parts, and the buffer material is thicker at a part covering the connection parts than at a part covering a flat part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
