Unlock instant, AI-driven research and patent intelligence for your innovation.

Waste ternary lithium battery recycling and sorting process

A ternary lithium battery and waste technology, which is applied in the field of waste ternary lithium battery recycling and sorting process, can solve the problems of low recovery rate and high recycling cost, and achieve the effects of high recovery rate, reduced recycling cost and simple operation steps

Inactive Publication Date: 2019-08-13
福建常青新能源科技有限公司
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the currently reported waste lithium battery recycling methods are mainly aimed at the positive electrode material containing a single lithium cobalt oxide, the emergence of a large number of cobalt-based, nickel-doped and manganese-based lithium batteries will bring huge challenges to the recycling of used lithium batteries.
The existing recovery methods for various lithium-ion batteries have low recovery rates and high recovery costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waste ternary lithium battery recycling and sorting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , in an embodiment of the present invention, a waste ternary lithium battery recycling and sorting process includes the following steps:

[0029] (1) Soak the waste NCM532 ternary lithium battery in saturated salt water and discharge for 10 hours;

[0030] (2) Wash the discharged waste NCM532 ternary lithium battery with clean water, clean the battery salt water, and then dry it;

[0031] (3) Cutting and crushing the cleaned and dried battery to obtain battery slices, the diameter of which is 1 cm;

[0032] (4) The obtained battery slices are separated by flotation to separate the battery pole piece from the plastic casing and the diaphragm to obtain the positive and negative pole pieces;

[0033] (5) Soak the positive and negative electrodes in an organic solvent for 5 hours, heat the organic solvent to 50° C., and continue stirring to dissolve the binder in the active material of the battery with the organic solvent. The liquid ratio is 1:20, and the o...

Embodiment 2

[0041] In an embodiment of the present invention, a waste ternary lithium battery recycling and sorting process includes the following steps:

[0042] (1) Soak the waste NCM532 ternary lithium battery in saturated salt water and discharge for 10 hours;

[0043] (2) Wash the discharged waste NCM532 ternary lithium battery with clean water, clean the battery salt water, and then dry it;

[0044] (3) Cutting and crushing the cleaned and dried battery to obtain battery slices, the diameter of which is 2 cm;

[0045] (4) The obtained battery slices are separated by flotation to separate the battery pole piece from the plastic casing and the diaphragm to obtain the positive and negative pole pieces;

[0046] (5) Soak the positive and negative electrodes in an organic solvent for 6 hours, while heating the organic solvent to 60°C and continuously stirring, using the organic solvent to dissolve the binder in the active material of the battery, and the organic solvent and the solid of...

Embodiment 3

[0054] In an embodiment of the present invention, a waste ternary lithium battery recycling and sorting process includes the following steps:

[0055] (1) Soak the waste NCM532 ternary lithium battery in saturated salt water and discharge for 11 hours;

[0056] (2) Wash the discharged waste NCM532 ternary lithium battery with clean water, clean the battery salt water, and then dry it;

[0057] (3) Cutting and crushing the cleaned and dried battery to obtain battery slices, the diameter of which is 1.5 cm;

[0058] (4) The obtained battery slices are separated by flotation to separate the battery pole piece from the plastic casing and the diaphragm to obtain the positive and negative pole pieces;

[0059] (5) Soak the positive and negative electrodes in an organic solvent for 5.5 hours, while heating the organic solvent to 55°C and continuously stirring, using the organic solvent to dissolve the binder in the active material of the battery, and the organic solvent and the posi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of batteries. More specifically, the invention relates to a waste ternary lithium battery recycling and sorting process. The process comprises the following steps: crushing a waste ternary lithium battery; separating out the positive and negative electrode pieces, and putting the positive electrode piece and the negative electrode piece into an organicsolvent; soaking and stirring the electrode pieces with the organic solvent, performing screening to obtain oversize materials and undersize materials after fully stirring; performing the filter pressing and drying of the undersize materials; performing the water washing of the oversize materials, thereby achieving the separation of an electrode active material from copper-aluminum foil; performing separating to obtain oversize materials which are copper-aluminum foil and the undersize materials which are electrode active material; performing the filter pressing and drying of the undersize materials to achieve the recycling of the electrode active material. The process has the advantages that the operation steps are simple, the recycling cost of the lithium battery is greatly reduced, theelectrode active material and metal components in the lithium battery can be efficiently separated, the recycled material is high in purity and recycling rate, the used organic solvent can be recycled, the recycling cost is saved, and energy conservation and environmental protection are facilitated.

Description

technical field [0001] The invention relates to the technical field of batteries, more specifically, a process for recycling and sorting waste ternary lithium batteries. Background technique [0002] Since the successful development of lithium-ion batteries in the 1990s, they have been widely used in mobile phones, notebook computers, Camcorders, digital cameras and many other fields. With the widespread use of lithium batteries in the world, a large amount of waste lithium batteries will inevitably be produced. However, waste lithium-ion batteries contain a large amount of valuable metals. Recycling these valuable metals, especially cobalt, will greatly alleviate the shortage of cobalt resources. At the same time, it can "turn waste into treasure" and provide raw materials for the preparation of new lithium battery cathode materials. [0003] Lithium-ion secondary batteries are mainly composed of positive and negative electrodes, separator, electrolyte, casing and other ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M10/54B09B3/00
CPCH01M10/54B09B3/80Y02W30/20Y02W30/84
Inventor 王春虎李建球石小东钟姝张东学晁锋刚杨志张德剑陈征贤
Owner 福建常青新能源科技有限公司