Parallel structure sealing electrode and assembly method thereof

Abstract

The invention is a parallel structure sealing electrode and an assembly method thereof. The parallel structure sealing electrode saves space and realizes good sealing of a liquid metal battery for long term working under a high temperature environment. The electrode includes a battery cover plate, an external transition ring, an insulation structure, an internal transition ring, an electrode core and a liquid sealing bowl holder that are disposed coaxially. Sealing insulation connection of the battery cover plate, the insulation material and the electrode core is achieved through the external transition ring and the internal transition ring, the setting of the internal transition ring increases a stress release structure, and the battery cover plate upper end face is adopted as the positioning end face, a positioning clamp stand disposed on the electrode core is utilized to position the electrode core, the distance from the positioning clamp stand lower surface to the electrode core lower surface ensures the distances from the electrode core to a battery internal active material, the liquid sealing bowl holder is utilized to realize isolation of the battery internal active material, and the connection of the external transition ring, the insulation structure and the internal transition ring is protected by means of liquid sealing, thereby avoiding corrosion to the sealing electrode, and guaranteeing a lasting battery life.

Description

technical field [0001] The invention relates to the technical field of energy storage batteries, in particular to a parallel structure sealing electrode and an assembly method thereof. Background technique [0002] Liquid metal battery is a new type of energy storage battery that has developed rapidly in recent years. It is composed of molten positive electrode, electrolyte, and negative electrode that are automatically layered at 300-700 ° C. It has simple structure, low cost, good high-current characteristics, and long service life. In recent years, it has attracted extensive attention in the field of large-scale energy storage. [0003] Since liquid metal batteries generally operate at a high temperature of 300-700°C, and the liquid active substances such as electrolyte salts and lithium have a certain vapor pressure, the design of the insulating and sealing structure between the positive and negative electrodes of the battery is extremely important. . At room temperatu...

AI Technical Summary

Problems solved by technology

However, welding between ordinary metals at high temperatures cannot achieve good insulation

General tight fit and difficult to achieve a good seal

The existing stable sealing technology mainly focuses on leading the sealed part of the liquid metal battery out of the high temperature environment for room temperature sealing. The biggest problem with this kind of sealing is that it is easy to cause the size of the sealing structure to be too large, the space utilization rate is extremely poor, and the sealing cost is also very high. , not suitable for industrialization

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