Semi-sealed discharging device for batched recovery of waste and used lithium ion batteries

Abstract

A semi-sealed discharging device for batched recovery of waste and used lithium ion batteries includes: a semi-sealed discharging container filled with a discharging solution, a battery feeding apparatus, a discharge transmission apparatus, a tail gas treatment apparatus, and a battery recovery groove. The lithium ion batteries are fed into a battery storage bin, and then enter the discharging container through a star-shaped material adding device. The batteries then fall into the discharging solution, of which the molar ratio of ferrous sulfate to manganese sulfate is 2:1, to start discharge; after discharging for 14 h, the batteries are floated to the liquid level of the solution along with a conveyor belt and enter a drainage zone; in the draining zone, the solution on the surfaces of the batteries flows away from the holes in the conveyor belt, air generated from an air collecting cover accelerating the draining process; the drained batteries then move to the end of the conveyor belt and fall into the battery recovery groove, wherein the air in the container flows into and is collected in the air collecting cover through an air inlet, so that potential volatile gas are adsorbed through an adsorption chamber and the air is discharged by means of a centrifugal fan. The device is easy to use, is safe and high-effective, is low in cost and is green and environment-friendly.

Description

technical field [0001] The invention relates to the device design for large-scale discharge of waste lithium ion batteries, which is an efficient and environmentally friendly discharge device designed for a large number of waste lithium ion batteries with residual power, and belongs to the field of electronic waste treatment and resource utilization in the field of environmental protection . Background technique [0002] With the continuous progress and development of science and technology, lithium-ion batteries can be seen everywhere, ranging from portable electronic devices such as mobile phones, computers, cameras, etc., to new energy vehicles, military aerospace and other energy storage fields. The application space of lithium-ion batteries as energy storage power supplies more widespread. Studies have shown that the cycle of lithium ions is about 500 times, and in the process of repeated charge and discharge, the electrode expansion of lithium ion batteries is easy to...

AI Technical Summary

Problems solved by technology

The discharge solution of this method is strongly alkaline, which is easy to corrode the shell of the lithium-ion battery, and the electrolyte inside the battery leaks out, causing the generation of polluting organic gases, which will also endanger the health of workers in industrial production practice.

At the same time, the total duration of the discharge process is about 70h, the discharge process is long, and the discharge efficiency is very low, which is not conducive to industrial applications

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