A kind of glass sealing tool for sodium-sulfur battery

Abstract

The invention discloses a sodium-sulfur battery glass sealing tool, which comprises a tool base arranged horizontally, a lower boss coaxial with the tool base is arranged in the center of the top surface of the tool base, the top surface of the lower boss is horizontal, and the lower The outer peripheral surface of the boss is vertical, and it also includes a vertically arranged frock sleeve and a horizontally arranged locating ring, the top surface of the frock base and the bottom surface of the locating ring are all horizontal, and the lower end plane of the frock sleeve and The top surface of the tooling base is fitted, and the inner peripheral surface of the tooling sleeve can cooperate with the outer peripheral surface of the insulating ceramic ring in the sodium-sulfur battery; the upper end plane of the tooling sleeve is fitted with the bottom surface of the positioning ring, and the radial direction of the positioning ring The center is provided with a fixed through hole coaxial with the positioning ring, which can cooperate with the outer peripheral surface of the solid electrolyte ceramic tube in the sodium-sulfur battery. The technical effect is that it can complete the encapsulation between the sodium-sulfur battery insulating ceramic ring and the solid electrolyte ceramic tube on a large scale, and ensure the concentricity between the sodium-sulfur battery insulating ceramic ring and the solid electrolyte ceramic tube after glass sealing.

Description

technical field [0001] The invention relates to a sodium-sulfur battery glass sealing tooling in the field of energy storage. Background technique [0002] Sodium-sulfur battery is an energy storage battery that can achieve high efficiency and large capacity at the same time. It has obvious technical advantages and is considered to be one of the most promising chemical energy storage batteries. The negative electrode active material of the sodium-sulfur battery is metal sodium, the positive electrode active material is sulfur, and the electrolyte and diaphragm are solid electrolyte ceramic tubes made of β”-alumina. The upper limit of the normal operating temperature of the sodium-sulfur battery is about 330°C. Leakage of positive or negative active materials is not allowed during the process, so sodium-sulfur batteries must have good packaging quality.In sodium-sulfur batteries, the insulating ceramic ring made of α-alumina and the solid electrolyte ceramic tube are sealed b...

AI Technical Summary

Problems solved by technology

However, during glass sealing, as the temperature continues to rise, the glue will volatilize. When the temperature is higher than the softening point of the glass, the glass begins to deform and flow. At this time, the glue loses its ability to fix the insulating ceramic ring and the solid electrolyte ceramic tube. The role of glass melting and cooling may produce asymmetric tension around the insulating ceramic ring and solid electrolyte ceramic tube, thus causing the eccentricity of the insulating ceramic ring and solid electrolyte ceramic tube

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