Patent ID: 7457102
Filing Date: 2008-11-25
Classification: H01G

Abstract:
1. A capacitor comprising: a capacitor element including an anode and a cathode, and a separator intervening between the anode and the cathode, wherein the anode and the cathode are rolled together with the separator, so that the capacitor element is formed such that it includes a hollow section and the anode and the cathode are oriented in opposite directions, and wherein each of the anode and the cathode comprises a polarized electrode layer formed on a current collecting unit made of metal foil; a cylindrical metal housing having a bottom and enclosing the capacitor element and driving electrolyte, wherein one of the anode and the cathode of the capacitor element is coupled to an inner face of the bottom of the cylindrical metal housing; and a terminal plate having an inner face coupled to the other of the anode and the cathode of the capacitor element, said terminal plate sealing an opening of the metal housing, wherein the inner face of the terminal plate is referred to as a reference plane, and the reference plane is protruded toward an outer surface side leaving a plurality of belt-like coupling sections which extend from a rim toward a center of the terminal plate, and the terminal plate has a protrusion to be fitted into the hollow section of the capacitor element, and the terminal plate also has a terminal at a center of its outer surface for external connection, so that said one of the anode and the cathode of the capacitor element is brought out through the metal housing and said other of the anode and the cathode of the capacitor element is brought out through the terminal of the terminal plate, and wherein the terminal plate has a rotation stopper formed of at least one of a dint and a protrusion on the outer surface.