Waste power lithium battery all-component cleaning and recycling method

A recycling method, lithium battery technology, applied in battery recycling, separation method, recycling of waste collectors, etc., can solve problems such as harsh process conditions and difficulty in large-scale industrial application, and achieve wide trial range, huge economic benefits and social benefits Benefits, the effect of realizing zero discharge of three wastes

Inactive Publication Date: 2019-12-31
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses supercritical carbon dioxide to extract and recover the electrolyte, and the process conditions are harsh, making it difficult to achieve large-scale industrial application.

Method used

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  • Waste power lithium battery all-component cleaning and recycling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) The steps of charged crushing of waste batteries under the protection of inert gas and closed atmosphere: 3 kg of waste power ternary lithium batteries are charged and crushed under the protection of carbon dioxide gas and closed atmosphere. The crushing process adopts primary crushing to obtain waste battery scraps, and the crushed battery scraps are transported to the ultrasonic enhanced extraction process by a closed system.

[0022] (2) The step of extracting and recovering the electrolyte by forced extraction method: the broken battery scraps enter the ultrasonic enhanced extraction process, the extraction temperature is 20°C, the extraction time: 60min, and the extraction flow rate: 1:2, so that the electrolysis of the battery scraps Liquid extraction enters the extractant, and through distillation and condensation, the electrolyte is efficiently separated and recovered.

[0023] (3) The step of extracting and recovering the binder by using a new extraction me...

Embodiment 2

[0027] (1) Steps of charged crushing of waste batteries under inert gas protection and airtight atmosphere: 10kg of waste power ternary lithium batteries are charged and crushed under nitrogen protection and airtight atmosphere. The crushing process adopts primary crushing to obtain waste battery scraps, and the crushed battery scraps are transported to the ultrasonic enhanced extraction process by a closed system.

[0028] (3) The step of extracting and recovering the electrolyte by forced extraction method: the battery fragments obtained by crushing enter the ultrasonic enhanced extraction process, the extraction temperature is 22°C, and the extraction time is 10 minutes: the extraction flow rate: 1:5, so that the electrolysis of the battery fragments Liquid extraction enters the extractant, and through distillation and condensation, the electrolyte is efficiently separated and recovered.

[0029](3) The step of extracting and recovering the binder by using a new extraction ...

Embodiment 3

[0033] (1) Steps of charged crushing of waste batteries under inert gas protection and closed atmosphere: 30kg of waste power ternary lithium batteries are charged and crushed under argon protection and closed atmosphere. The crushing process adopts primary crushing to obtain waste battery scraps, and the crushed battery scraps are transported to the ultrasonic enhanced extraction process by a closed system.

[0034] (4) The step of extracting and recovering the electrolyte by forced extraction method: the crushed battery scraps enter the ultrasonic enhanced extraction process, the extraction temperature is 25°C, the extraction time: 120min, and the extraction flow rate: 1:1, so that the electrolysis of the battery scraps Liquid extraction enters the extractant, and through distillation and condensation, the electrolyte is efficiently separated and recovered.

[0035] (3) The step of extracting and recovering the binder by using a new extraction method: the battery debris afte...

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Abstract

The invention belongs to the waste battery recycling technology field, and discloses a waste power lithium battery all-component cleaning and recycling method. The method comprises the following stepsof (1) under inert gas protection and an unclosed state, disassembling and crushing to obtain crushed battery materials; and (2) separating and recycling an electrolyte from the crushed waste power lithium battery materials by adopting a forced extraction method; (3) extracting and recycling a binder; (4) drying the crushed battery materials; and (5) sorting and screening the dried crushed battery materials, and separating and recycling an electrode powder and copper-aluminum particles. The method has advantages that through an extraction method, the electrode powder, the binder and an organic solvent are completely separated from each other, and the electrolyte, the binder and the electrode powder in the waste power lithium ion battery are efficiently recycled. A whole process has zero emission of three wastes and is environment-friendly.

Description

technical field [0001] The invention relates to the field of recycling waste lithium-ion batteries, in particular to a technology for cleaning and recycling all components of waste power lithium batteries. Background technique [0002] In recent years, my country has vigorously promoted and applied new energy vehicles, driving the rapid growth of the power battery market. The production and sales of power batteries are increasing year by year, followed by a large number of batteries facing retirement and scrapping. Calculated on the basis of battery life of 8-10 years, after 2018 new energy vehicle power batteries began to be decommissioned on a large scale. In 2030, the scrap volume will reach 3 million tons (300GWh). With the further promotion of new energy vehicles, the number of electric vehicles will increase, and the market demand for power batteries will be further released. In the future, the scale of the power battery recycling market will expand, and the industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54B01D11/02
CPCB01D11/0284H01M10/54Y02W30/84
Inventor 李兰兰王甲琴陈天翼张明兰保毓鹏柴艮风王杰伟吴明敏
Owner JINCHUAN GROUP LIMITED
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