| 摘要 |
The objective of the present invention is to provide a battery in which a tab that is led out from an electrical conductor of an electrode unit is prevented from corroding, and is secured to a bonding portion of a covering body with good hermetic sealing characteristics. A cell (1) of a battery is provided with: a plurality of electrode units (8 (or electrode units (6, 9, 9, 6))) which are stacked on one another and each of which includes an electrode containing an acidic or alkaline electrolytic solution and a rectangular tab (82a (or tabs (62a, 92a, 92a, 62a))); a covering body (2) which covers the plurality of electrode units and which has a bonding portion (23) which overlaps and is bonded to an outer peripheral edge portion of each of the plurality of electrode units; and a sealant (84 (or sealants (64, 94, 94, 64))) which covers the tabs and is bonded while being sandwiched in the bonding portion 23. The sealant is formed in such a way that the width thereof gradually increases in the direction in which the plurality of electrode units are stacked. |
