| 摘要 |
PROBLEM TO BE SOLVED: To secure sufficient volume energy density, to cope with the realization of higher capacity and to improve productivity. SOLUTION: When a plurality of electrode pairs each composed by laminating a positive electrode having a quadrilateral plane form and a negative electrode having a quadrilateral form via a separator having a quadrilateral form parallelogram are laminated, one side of each of the quadrilaterals of the same kind of layers in at least one kind of the positive electrode, the negative electrode and the separator of the electrode pair adjacent to each other are connected together. It is preferable that one side of each of the quadrilaterals of the negative electrodes of the electrode pairs adjacent to each other are connected together. In each of the electrode pairs is composed by forming the negative electrode 1 as one sheet, arranging a divided positive electrode 3a or the like on it and folding them, one side of each of the quadrilaterals of the negative electrodes 1 to the electrode pairs adjacent to each other are connected together. |
