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Title: Hermetically sealed electrical feedthrough for high temperature secondary cells

Abstract

A passthrough seal is disclosed for electrically isolating the terminal in a lithium/metal sulfide cell from the structural cell housing. The seal has spaced upper and lower insulator rings fitted snuggly between the terminal and an annularly disposed upstanding wall, and outwardly of a powdered insulator also confined between the upstanding wall and terminal. The adjacent surfaces of the upper insulator ring and the respective upstanding wall and terminal are conically tapered, diverging in the axial direction away from the cell interior, and a sealing ring is located between each pair of the adjacent surfaces. The components are sized so that upon appropriate movement of the upper insulator ring toward the lower insulator ring the powdered insulator and sealing rings are each compressed to a high degree. This compacts the powdered insulator thereby rendering the same highly impervious and moreover fuses the sealing rings to and between the adjacent surfaces. The upper and lower insulator rings might be formed of beryllium oxide and/or alumina, the powdered insulator might be formed of boron nitride, and the sealing rings might be formed of aluminum.

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
6925362
Application Number:
ON: DE84011122
Assignee:
Dept. of Energy ERA-09-026086; EDB-84-082735
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; LITHIUM-SULFUR BATTERIES; SEALS; ALUMINIUM; ALUMINIUM OXIDES; BERYLLIUM OXIDES; BORON NITRIDES; ELECTRICAL INSULATION; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BERYLLIUM COMPOUNDS; BORON COMPOUNDS; CHALCOGENIDES; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELEMENTS; METAL-NONMETAL BATTERIES; METALS; NITRIDES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PNICTIDES 250903* -- Energy Storage-- Batteries-- Materials, Components, & Auxiliaries

Citation Formats

Knoedler, R., Nelson, P.A., Shimotake, H., and Battles, J.E. Hermetically sealed electrical feedthrough for high temperature secondary cells. United States: N. p., 1983. Web.
Knoedler, R., Nelson, P.A., Shimotake, H., & Battles, J.E. Hermetically sealed electrical feedthrough for high temperature secondary cells. United States.
Knoedler, R., Nelson, P.A., Shimotake, H., and Battles, J.E. Tue . "Hermetically sealed electrical feedthrough for high temperature secondary cells". United States.
@article{osti_6925362,
title = {Hermetically sealed electrical feedthrough for high temperature secondary cells},
author = {Knoedler, R. and Nelson, P.A. and Shimotake, H. and Battles, J.E.},
abstractNote = {A passthrough seal is disclosed for electrically isolating the terminal in a lithium/metal sulfide cell from the structural cell housing. The seal has spaced upper and lower insulator rings fitted snuggly between the terminal and an annularly disposed upstanding wall, and outwardly of a powdered insulator also confined between the upstanding wall and terminal. The adjacent surfaces of the upper insulator ring and the respective upstanding wall and terminal are conically tapered, diverging in the axial direction away from the cell interior, and a sealing ring is located between each pair of the adjacent surfaces. The components are sized so that upon appropriate movement of the upper insulator ring toward the lower insulator ring the powdered insulator and sealing rings are each compressed to a high degree. This compacts the powdered insulator thereby rendering the same highly impervious and moreover fuses the sealing rings to and between the adjacent surfaces. The upper and lower insulator rings might be formed of beryllium oxide and/or alumina, the powdered insulator might be formed of boron nitride, and the sealing rings might be formed of aluminum.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {7}
}