Ceramic collars for active brazing in sodium-based thermal batteries

US9028997B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9028997-B2
Application numberUS-201213729343-A
CountryUS
Kind codeB2
Filing dateDec 28, 2012
Priority dateDec 28, 2012
Publication dateMay 12, 2015
Grant dateMay 12, 2015

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Abstract

Official abstract text for this publication.

The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and include inwardly extending recesses. The portions of the outer and inner Ni rings active brazed to the outwardly facing portions of the collar may be inwardly facing. The alpha-alumina collar may include a greater coefficient of thermal expansion than each of the outer and inner Ni rings, and the alpha-alumina collar and outer and inner Ni rings may be configured such that a portion of the outer and inner Ni rings is deformed into the inwardly extending recesses of the alpha-alumina collar after active brazing thereof.

First claim

Opening claim text (preview).

We claim: 1. A sub-assembly for at least partially sealing a cell of a sodium-based thermal battery, the sub-assembly including: an outer metal ring defining a first aperture and including a first portion and a second portion, the second portion including a first inwardly facing sealing surface; an inner metal ring defining a second aperture that is smaller than the first aperture of the outer metal ring in at least one dimension and including a third portion and a fourth portio…

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What does patent US9028997B2 cover?
The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and includ…
Who is the assignee on this patent?
Gen Electric
What technology area does this patent fall under?
Primary CPC classification H01M10/39. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue May 12 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).