| 摘要 |
PROBLEM TO BE SOLVED: To provide a packed battery with excellent resistance characteristics against peeling off by an electrolyte solution of a joining part of a lead terminal and an outer package body. SOLUTION: The packed battery made by laminating a plural number of a unit cell with a positive electrode lead terminal 11 and a negative electrode lead terminal 12 extended outside from a unit cell main body is provided with a means by which an electrolyte solution in the packed battery is prevented from contacting a joint part of the lead terminal and the outer package, for instance, a means for putting the side where the lead terminal is not extended headed downward. With this, an attack by the electrolyte solution on a joint interface of the lead/outer package in a battery is alleviated, and thus, a packed battery hardly affected by peeling off degradation of the lead/outer package and with an excellent sealing reliability can be provided. COPYRIGHT: (C)2004,JPO |
