| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for increasing the area for bonding an electrode terminal with an electrode body in a storage battery.SOLUTION: A storage battery comprises: an electrode body; and electrode terminals. The electrode body has: an electrode lamination part; and a protruding part. The electrode lamination part is formed by positive and negative electrode sheets laminated on one another through separators; and one kind of electrode sheets of the positive and negative electrode sheets protrude from the electrode lamination part to form the protruding part. The protruding part has a constrained part, and a middle part. The constrained part is formed by, of the protruding parts of the electrode sheets bundled at tip ends in a laminating direction, the tip ends. The thickness of the tip ends thus bundled is smaller than the thickness of the electrode lamination part. The middle part is located between the electrode lamination part and the constrained part. In the middle part, the thickness is gradually reduced from the thickness of the electrode lamination part to the thickness of the tip ends bundled. The electrode terminals are each formed by a flat plate which consists of: a first flat part connected with the constrained part; and a second flat part offset on the outer side of the first flat part in the laminating direction of the electrode lamination part, of which the edge located on the side of the electrode lamination part abuts against the middle part. |
