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Title: Feedthrough terminal for high-power cell

A feedthrough terminal for a high power electrochemical storage cell providing low resistance coupling to the conductive elements therein while isolating the terminal electrode from the highly corrosive environment within the cell is disclosed. A large diameter, cylindrical copper electrode is enclosed in a stainless steel tube with a BN powder feedthrough seal maintained around the stainless steel tube by means of facing insulative bushings and an outer sleeve. One end of the copper conductor is silver-brazed directly to a flat, butterfly bus bar within the cell, with the adjacent end of the surrounding outer feedthrough sleeve welded to the bus bar. A threaded seal is fixedly positioned on a distal portion of the stainless steel tube immediately adjacent the distal insulative bushing so as to compress the feedthrough seal in tight fitting relation around the stainless steel tube in providing a rugged, leak-proof electrical feedthrough terminal for the power cell.
Authors:
Publication Date:
OSTI Identifier:
6452166
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 30 DIRECT ENERGY CONVERSION; ELECTROCHEMICAL CELLS; CONNECTORS; COPPER; CORROSION; ELECTRIC CONDUCTORS; ELECTRIC CONTACTS; ELECTRODES; HIGH TEMPERATURE; SEALS; CHEMICAL REACTIONS; CONDUCTOR DEVICES; ELECTRICAL EQUIPMENT; ELEMENTS; EQUIPMENT; METALS; TRANSITION ELEMENTS 250903* -- Energy Storage-- Batteries-- Materials, Components, & Auxiliaries; 300503 -- Fuel Cells-- Materials, Components, & Auxiliaries