BRIDGELESS SEALED SODIUM-BASED THERMAL BATTERIES AND METHODS OF SEALING SAME

• Main Authors: RAHMANE MOHAMED, KUMAR SUNDEEP, COLE RAYMOND R, WILLSON PATRICK D, JOHNSON NEIL A
• Format: Patent
• Language: English
• Published: 02.10.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

The present application provides configurations, components, assemblies and methods for sealing cells of sodium-based thermal batteries, such as NaMx cells, without a bridge member. In some embodimentsl the cells may include an electrically conductive case directly hermetically sealed to an electrically insulating ceramic collar of the cell to hermetically seal an anodic chamber of the cell. In some embodiments the ceramic collar and an electrolyte separator tube may be a cosintered one-piece member. In some embodiments the case and the ceramic collar and separator tube may form a hermetically sealed anodic chamber therebetween. In some embodiments the separator tube may define, at least in part, a cathodic chamber therein. In some embodiments the cells may include a current collector hermetically sealed to the ceramic collar, and a cap member hermetically sealed to the current collector to hermetically seal the cathodic chamber of the cell.