Hermetically sealed electrical feedthrough for high temperature secondary cells

Patent · Tue Jan 01 04:00:00 EST 1985

OSTI ID:865393

Knoedler, Reinhard ^[1]; Nelson, Paul A ^[2]; Shimotake, Hiroshi ^[3]; Battles, James E ^[4]

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1. Nussloch, DE
2. Wheaton, IL
3. Hinsdale, IL
4. Oak Forest, IL

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4508797
• OSTI ID: 865393
• Country of Publication: United States
• Language: English

Related Subjects

/429/
adjacent
adjacent surfaces
alumina
aluminum
annularly
annularly disposed
appropriate
axial
axial direction
beryllium
beryllium oxide
boron
boron nitride
cell
cell housing
cells
compacts
components
compressed
confined
conically
conically tapered
degree
direction
disclosed
disposed
diverging
electrical
electrical feedthrough
electrically
electrically isolating
feedthrough
fitted
formed
fuses
hermetically
hermetically seal
hermetically sealed
highly
housing
impervious
insulator
interior
isolating
lithium
located
metal
metal sulfide
moreover
movement
nitride
outwardly
oxide
pair
passthrough
powdered
rendering
respective
rings
rings fitted
seal
sealed
sealing
sealing rings
secondary
secondary cell
secondary cells
sized
snuggly
spaced
structural
sulfide
sulfide cell
surfaces
tapered
temperature
temperature secondary
terminal
upper
upstanding
wall