| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery having high output, capable of charging and discharging at a high rate, having low resistance, and reliable current collecting structure. <P>SOLUTION: The secondary battery is equipped with at least an electrode group 4 formed by winding a positive plate 1 having a positive mix coated part 1b and a positive mix uncoated part 1a formed at one end in the width direction on a positive current collector, a negative plate 2 having a negative mix coated part 2b and a negative mix uncoated part 2a formed at one end in the width direction on a negative current collector, and a separator 3 facing at least the positive mix coated part of the positive plate 1 and the negative mix coated part 2b of the negative plate 2 in the length direction; a positive current collecting member 10 and a negative current collecting member 11 having blade edge-shaped protruded parts 12a smaller than the width of the positive mix uncoated part 1a and that of the negative mix uncoated part 2a, and the electrode group 4 and the positive current collecting member 10 and the negative current collector member 11 are connected through the protruded parts 12a of the positive current collecting member 10 and the negative current collecting member 11 and notch parts installed in the electrode group of the positive mix uncoated part 1a and the negative mix uncoated part 12. <P>COPYRIGHT: (C)2008,JPO&INPIT |
