| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery to carry out a stable electroconductive connection simply, easily and inexpensively in a battery requiring high output power. SOLUTION: As for an electrode plate having the same polarity as the battery can, there are non-coated parts at one end in the longitudinal direction and one end in the width-wise direction, the non-coated part in the longitudinal direction and the bottom part of the battery can are connected with a lead, and the non-coated part in the width-wise direction protrudes and forms a spiral protruded part at the bottom end side end part, and this is the wound lithium ion battery in which one part or the whole part of the non-coated parts in the protruded part opposed by winding are electrically connected with each other. COPYRIGHT: (C)2004,JPO |
