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Title Cell casing with a hermetical mechanical seal and a hermetically sealed sodium--sulfur cell
Creator/Author Breiter, M.W. ; Mitoff, S.P. ; Powers, R.W.
Publication Date1975 Feb 18
OSTI IdentifierOSTI ID: 7355640
Report Number(s)US 3946751
Resource TypePatent
Subject25 ENERGY STORAGE; SODIUM-SULFUR BATTERIES; DESIGN; CONTAINERS; SEALS; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ENERGY STORAGE SYSTEMS; METAL-NONMETAL BATTERIES
Description/Abstract A cell casing with a hermetic mechanical seal comprising a ceramic ring, an inner casing of a solid sodium ion-conductive material with one open end, and a glass seal sealing a portion of the outer wall of the inner casing adjacent its open end within and to the ceramic ring is described. A first outer casing portion has at least one open end and a flange at the open end. The first outer casing portion surrounds the inner casing and is spaced away from it, the flange of the first outer casing portion being adjacent the ceramic ring. A second outer casing portion has at least one open end and a flange at the open end positioned with the flange adjacent the ceramic ring, whereby the second outer casing portion is spaced from, and extends in an opposite direction to, the first outer metallic casing portion. The first and second outer casing portions are joined to the ceramic ring by a hermetic mechanical seal, thereby forming a continuous outer cell casing. The hermetic mechanical seal is insulated electrically from the outer casing portions. The hermetic mechanical seal comprises a pair of retainer rings, each retainer ring of the pair of retainer rings being positioned between the ceramic ring and an adjacent flange of an associated outer casing portion. There is a pair of open edge metallic sealing rings, each of the pair of sealing rings being positioned outside of and spaced from the associated retainer ring. A retaining collar is positioned around each outer casing portion and in contact with the opposite surface of the outer casing portion flange. Each collar is provided with at least a pair of apertures, and the collars are positioned so that the respective apertures of the associated collars are aligned. A threaded fastener passes through each of the pairs of associated apertures. The threaded fasteners are thus positioned tightly and form a hermetic seal.
Country of PublicationUnited States
LanguageEnglish
FormatSize: Pages: v
RightsPatent Assignee: General Electric Co.
System Entry Date2007 Jun 04

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