Pressing device of positive electrode prefabricated sulfur for sodium-sulfur battery

Abstract

The invention discloses a pressing device of positive electrode prefabricated sulfur for a sodium-sulfur battery, which can effectively improve the preparation efficiency. The pressing device comprises a pressing system, a cooling system, a sulfur injection system, a heating system, a waste gas discharging system and a control system. The pressing system comprises a pressing chamber and a pressing mold which is installed inside the pressing chamber; the cooling system is connected with the pressing mold; the sulfur injection system comprises a sulfur smelting tank, a feeding transitional chamber and a sulfur injection groove, and the sulfur smelting tank is arranged outside the pressing chamber; the feeding transitional chamber is communicated with the sulfur smelting tank; one end of the sulfur injection groove is arranged in the feeding transitional chamber, and the other end of the sulfur injection groove passes through the side wall of the pressing chamber to be connected between an upper die and a lower die via a moving mechanism; the heating system is respectively connected with the pressing mold, the feeding transitional chamber, a sulfur discharging pipe and the sulfur smelting tank; the waste gas discharging system is arranged in a waste gas discharging port in the top surface of the pressing chamber; and the control system comprises a programmable controller and is connected with the pressing system, the sulfur injection system, the heating system, the cooling system and the waste gas discharging system respectively through signals.

Description

technical field [0001] The invention relates to a pressing device for prefabricating positive electrode sulfur of a sodium-sulfur battery. Background technique [0002] Sodium-sulfur (NaS) battery is a rechargeable battery composed of sodium for the negative electrode, sulfur for the positive electrode, and ceramic alumina materials for the electrolyte. It has the advantages of high energy storage density, high efficiency, low operating cost, easy maintenance, no pollution to the environment, and long service life. [0003] In the preparation of the positive electrode of the existing sodium-sulfur battery, liquid sulfur is injected into the carbon felt block first, so that the liquid sulfur penetrates into the carbon felt, and then cooled and solidified, and then the sulfur-containing carbon felt block is cut into the desired shape. This preparation method has a cumbersome process and a long production cycle, which is not conducive to the industrialization and large-scale p...

AI Technical Summary

Problems solved by technology

This preparation method is cumbersome and has a long production cycle, which is not conducive to the industrialization and large-scale production of sodium-sulfur batteries.

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