| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly efficient discharge performance better than the conventional case, regarding a nonaqueous electrolyte secondary battery formed to house a wound electrode body having the charging and discharging capability in a battery can made of a cylinder body and a lid body. SOLUTION: A wound electrode body 4 has the base ends of two or more strip type positive electrodes 5 connected to a winding core 41, and strip type negative electrodes 7 as counter electrodes are laid among a plurality of the positive electrodes 5. In addition, strip type separators 6 are laid between the positive electrode 5 and the negative electrode 7 faced to each other, and spirally wound. Also, each negative electrode 7 is connected to a cylinder body via a current collecting tab 8, thereby enabling the generated power of the wound electrode body 4 to be taken outside from the upper end of the winding core 41 projected from the cylinder body as well as the cylinder body. |
