| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery capable of partially deforming or cleaving an exterior material, thereby releasing internal pressure, when the internal pressure increases. SOLUTION: A member 60 for partitioning the surface of the exterior material 40 into a plurality of zones is arranged by firmly sticking on the surface of the exterior material 40 existed on at least one of both front and back surfaces of the secondary battery 1. The secondary battery 1 includes a charging and discharging element having an electrode plate laminated via a separator, the exterior material 40 for sealing by covering the charging and discharging element, and electrode terminals 21, 22 connected to the electrode plate and leading from the exterior material 40. COPYRIGHT: (C)2009,JPO&INPIT
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