Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1983-07-26
1985-04-02
Hearn, Brian E.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429181, H01M 208, H01M 202
Patent
active
045087970
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.
REFERENCES:
patent: 1323307 (1919-12-01), Noble et al.
patent: 3228804 (1966-01-01), Weidner
patent: 4071663 (1978-01-01), Bredbonner
patent: 4224388 (1980-09-01), Stadnick
patent: 4241152 (1980-12-01), Klink
patent: 4326016 (1982-04-01), Selover et al.
patent: 4430396 (1984-02-01), Hayes
Battles James E.
Knoedler Reinhard
Nelson Paul A.
Shimotake Hiroshi
Glenn Hugh W.
Hearn Brian E.
Hightower Judson R.
Kalafut Stephen J.
Lind Charles F.
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