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Disassembling processing method of waste sodium-sulfur cells

A technology of sodium-sulfur battery and treatment method, applied in battery recycling, solid waste removal, recycling by waste collectors, etc., to achieve the effect of simple operation and environmental friendliness

Inactive Publication Date: 2013-07-10
SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no specialized institution and relevant technical support to dismantle waste sodium-sulfur batteries. Therefore, a disassembly method that can be used for waste sodium-sulfur batteries is one of the research directions for those skilled in the art.

Method used

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  • Disassembling processing method of waste sodium-sulfur cells

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with examples.

[0019] When the capacity of the sodium-sulfur battery decays to 80% of the initial capacity, the sodium-sulfur battery is considered unusable. For example, for a sodium-sulfur battery with a rated capacity of 50Ah, when the charge and discharge capacity of the battery decreases to 40Ah, the service life of the battery is considered to be terminated, and it is a waste sodium-sulfur battery.

[0020] see figure 1 The sodium-sulfur battery includes an electric furnace 2 and a battery body 1 disposed in the electric furnace 2, the battery body 1 includes a casing 18, an electrolyte ceramic tube 11 disposed in the casing 18, and a negative electrode core tube 16 disposed in the electrolyte ceramic tube 11 , the negative electrode cover 13 located on the upper part of the electrolyte ceramic tube 16 nozzles, the lower sealing part 14 located on the lower part of the electrolyte ceramic tube...

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Abstract

The invention discloses a disassembling processing method of waste sodium-sulfur cells. The method comprises discharging the sodium-sulfur cells, cooling an electric furnace from an operating temperature to a room temperature, taking out the cell bodies, successively disassembling anode tabs and cathode covers from the cell bodies by using cutting tools, cleaning a cathode core tube with alcohol, then pulling out the cathode core tube from an electrolyte ceramic tube, successively disassembling cell bottom covers and lower sealing parts from the cell bodies by using the cutting tools, splitting a housing, immersing, cleaning sodium polysulfide in carbon felts between the housing and the electrolyte ceramic, and finally separating the electrolyte ceramic tube from the carbon felts and the housing. The disassembling processing method of waste sodium-sulfur cells is simple to operate and environment-friendly, totally prevents generation of fire hazards and other dangerous situations caused by reactions of moisture in the environment, oxygen and a high-temperature environment with metallic sodium, sodium polysulfide, sulfur and the like in the waste sodium-sulfur cells, and has an important practical value for processing the waste sodium-sulfur cells.

Description

technical field [0001] The invention relates to a dismantling method of a sodium-sulfur battery, in particular to a dismantling and treatment method of a waste sodium-sulfur battery. Background technique [0002] Currently used energy storage technologies are mainly divided into: chemical energy storage, physical energy storage and superconducting energy storage. Electrochemical energy storage has a long history. At present, it has developed types including lead-acid batteries, nickel-based batteries, lithium-based batteries, flow batteries, and sodium-sulfur batteries. Among them, flow batteries and sodium-sulfur batteries are regarded as emerging, efficient and promising electric energy storage batteries. [0003] During the manufacture and use of sodium-sulfur batteries, it is inevitable that some unqualified or damaged batteries will appear. If a large number of waste batteries are piled up together, the high temperature environment in summer will easily lead to moistur...

Claims

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Application Information

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IPC IPC(8): H01M10/54B09B3/00
CPCY02W30/84
Inventor 韩金铎刘宇杨建平黄毓敏阮前途潘红涛王泽永
Owner SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECH
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