Patent ID: 6477037
Filing Date: 2002-11-05
Classification: A61N

Abstract:
An electrolytic capacitor comprising:a hermetically sealed capacitor case defining an interior case chamber, the case having a case side wall extending to a side wall upper opening edge, and a cover hermetically sealed against the side wall upper opening edge to enclose the interior case chamber, an electrode stack assembly and electrolyte located within the interior case chamber, the electrode stack further comprising a plurality of capacitor layers stacked in registration upon one another, each capacitor layer comprising a cathode layer having a cathode tab, an anode sub-assembly comprising at least one anode layer having an anode tab, and a separator layer located between adjacent anode and cathode layers, whereby all the adjacent cathode layers and anode layers of the stack are electrically insulated from one another by the separator layer, anode terminal means extending through said capacitor case side wall for electrically connecting a plurality of anode tabs to one another and providing an anode connection terminal at the exterior of said case in relation to an external encapsulation area of the case side wall; cathode terminal means extending through an encapsulation area of said capacitor case side wall for electrically connecting a plurality of cathode tabs to one another and providing a cathode connection terminal at the exterior of said case in relation to said external encapsulation area; a connector assembly electrically attached to said anode connection terminal for making electrical connection with said anode tabs and electrically attached to said cathode connection terminal for making electrical connection with said cathode tabs; and a connector block formed of an epoxy droplet adhered to the encapsulation area of said capacitor side wall surrounding and encapsulating said anode and cathode connection terminals and the electrical connections with the connector assembly, wherein the cathode terminal means comprises a cathode feedthrough pin extending through a cathode opening in said case side wall having an internal pin end connected to said plurality of cathode tabs and an external pin end extending away from said case to provide said cathode connection terminal, said cathode feedthrough pin electrically connected with said case.