Patent ID: 9190637
Filing Date: 2015-11-17
Classification: H01M,Y02E

Abstract:
1. A rechargeable battery, comprising: an electrode assembly that performs charging and discharging; a case in which the electrode assembly is installed; a cap plate coupled to the case; a lead tab connected to an electrode of the electrode assembly; and an electrode terminal in the cap plate and connected to the lead tab, the electrode terminal including a column portion inserted into a terminal hole of the cap plate and a flange portion at one end of the column portion, the flange portion being wider than a cross-section of the column portion, and the flange portion being at an inner side of the cap plate, and the lead tab including an insertion portion into which the column portion is inserted and a concave receiving groove corresponding to the flange portion, the concave receiving groove extending from the insertion portion at an inner surface of the lead tab and receiving the flange portion at a side of the lead tab facing oppositely from the cap plate, the lead tab being welded in a surface contact manner to the flange portion along an inner surface of an external circumference of the insertion portion, a surface of the flange portion facing oppositely from the cap plate and a surface of the side of the lead tab facing oppositely from the cap plate forming a flush surface.