Electrically connecting multiple cathodes in a case negative multi- anode capacitor

A capacitor, which comprises:

• a) a casing comprising first and second casing members secured to each other;
• b) a first anode of tantalum housed within the casing;
• c) a second anode of tantalum housed within the casing, wherein the first anode is electrically connected to the second anode by a first anode wire having opposite ends contacting the respective first and second anodes;
• d) a feedthrough wire extending outside the casing and electrically isolated there from by a glass-to-metal seal, wherein the feedthrough wire is electrically connected to the first anode wire as the positive terminal for the capacitor;
• e) a cathode comprising ruthenium oxide active material supported by and in contact with a first face wall of the first casing member and a second face wall of the second casing member;
• f) a first cathode current collector disposed between the first and second anodes and having opposed first and second major faces provided with ruthenium oxide active material thereon, wherein the cathode current collector is electrically connected to the casing as the negative terminal for the capacitor;
• and
• g) an electrolyte contacting the cathode and the first and second anodes.

A method for providing a capacitor, comprising the steps of:

• a) providing a casing comprising a first casing member and a second casing member, each of the casing members including a face wall supporting and in contact with cathode active material;
• b) providing a first anode of anode active material comprising inner and outer face walls and a second anode of anode active material comprising inner and outer face walls;
• c) electrically connecting the first anode to the second anode by a first anode wire having opposed ends contacting the respective first and second anodes;
• d) connecting a feedthrough wire to the first anode wire as the positive terminal for the capacitor with the feedthrough wire extending outside the casing and electrically isolated there from by a glass-to-metal seal;
• e) disposing a current collector having opposed first and second major faces provided with cathode active material between the first and second anodes, thereby forming an anode/cathode assembly, wherein the cathode current collector is electrically connected to the casing as the negative terminal for the capacitor;
• f) positioning the anode/cathode assembly inside the first casing member with the feedthrough wire extending outside the first casing member and electrically insulating there from by a glass-to-metal seal;
• g) securing the first casing member to the second casing member to provide an enclosure containing the anode/cathode assembly;
• and
• h) providing an electrolyte inside the casing to operatively associate the cathode with the first and second anodes.