Discharging device and method for waste power lithium-ion battery pack

Abstract

The invention provides a waste and old power lithium ion battery pack discharging device and method. The device comprises a traveling crane device, a discharging unit, a discharging pool, a liquid storage pool, a discharging liquid conveying component, a residue discharging liquid removal component and a shade drying pool, wherein a sealing cover and a discharging cage are connected to form the discharging unit. The method is based on the device; a waste and old lithium ion battery pack is put into the discharging cage of the discharging unit; a mechanical grasping hand arranged on the traveling crane device grasps the sealing cover; the discharging unit is put into the discharging pool by the mechanical grasping hand; the discharging liquid is injected into the discharging pool through the liquid storage pool; through discharging, the discharging liquid is pumped out from the discharging pool; residue liquid drips on the surface of the battery pack are blown off; the discharging unitis moved to the shade drying pool; after the shade drying, the discharging unit is moved to a battery pack delivery region for battery pack discharging. The waste and old power lithium ion battery pack discharging device and method have the obvious characteristics that the operation is simple; safety and efficiency are high; the automation degree is high; environment-friendly effects and the likeare achieved.

Description

technical field [0001] The invention relates to a large-scale discharge device and method for waste and old power lithium ion batteries, belonging to the electronic waste treatment in the field of environmental protection. Background technique [0002] my country has become the world's largest new energy vehicle market, reaching 500,000 vehicles in 2016. As the service life of batteries, key components of electric vehicles, gradually expires, the amount of scrapped power batteries is also increasing. It is estimated that by 2030, the amount of scrapped power batteries for vehicles will reach 101Gwh, and the amount of scrapped power batteries will be about 1.16 million tons. [0003] 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 block the active material, resulting in deactivation. However, the scrapped power lithium-ion battery is differe...

AI Technical Summary

Problems solved by technology

This method is an open system, which will pose a huge threat to the safety of the working environment and the health of operators in industrial production practice

[0007] Chinese invention patent CN201510293356.3 provides an electrolytic discharge method in which waste lithium-ion batteries are placed in a mixed solution, and the mixed solution is NaSO 4 , K 2 SO 4 ,NaNO 3 and KNO 3 Wait for one or more than two saturated salt solutions to mix with Na in any ratio 2 CO 3 , K 2 CO 3 , a mixture of one or more than two of NaOH and KOH in any proportion, and adjust the pH value to 10-12; 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 Leakage will cause 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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