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

Recycling method and application of waste lithium ion battery

A lithium-ion battery and battery technology, applied in battery recycling, recycling technology, recycling by waste collectors, etc., can solve the problems of waste of resources and energy, complex procedures, etc., achieve recycling, broad application prospects, and increase leaching rate Effect

Active Publication Date: 2021-03-19
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a method for recycling waste lithium ion batteries, so as to alleviate the existing technologies in the prior art that require the positive electrode active material to be stripped from the positive electrode sheet, resulting in complicated procedures and waste of resources and energy question

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
  • Recycling method and application of waste lithium ion battery
  • Recycling method and application of waste lithium ion battery
  • Recycling method and application of waste lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097]The recovery method of the waste lithium-ion battery provided in this embodiment includes the following steps:

[0098](A) Prepreatment of waste lithium ion batteries to obtain a positive and negative pole sheet of 2mm * 2 mm;

[0099]Among them, the lithium-ion battery is a platelet of a waste nickel-manganese acid, and the pretreatment comprises soaking of a waste lithium ion battery containing the remaining electricity amount in a 2 m sulfate solution, discharges 24 h; then uses a steel saw to use a tissue ion battery Switch a small port on both sides of the head, tilted stationary, the electrolytic solution is completely dried, completely saw the battery head, remove two equivalent sized battery rolls; under the ventilation cabinet, manually peeled out of most plastic separators , Use the shredder to uniformly cut it to the appropriate specifications;

[0100](B) Complete the positive and negative plate 30g and the carbonaceous reducing agent coke powder 2G, pour it into the crucib...

Embodiment 2

[0106]The recovery method of the waste lithium-ion battery provided in this example, the specific process flow,figure 1 As shown, including the following steps:

[0107](A) Prepreatment of waste lithium ion batteries to obtain a positive and negative pole sheet of 2mm * 2 mm;

[0108]Among them, the lithium-ion battery is a platelet of a waste nickel-manganese acid, and the pretreatment comprises soaking of a waste lithium ion battery containing the remaining electricity amount in a 2 m sulfate solution, discharges 24 h; then uses a steel saw to use a tissue ion battery Switch a small port on both sides of the head, tilted stationary, the electrolytic solution is completely dried, completely saw the battery head, remove two equivalent sized battery rolls; under the ventilation cabinet, manually peeled out of most plastic separators , Use the shredder to uniformly cut it to the appropriate specifications;

[0109](B) Positive and negative electrode 30g and carbonaceous reducing dosage coke po...

Embodiment 3

[0115]The recovery method of the cancer ion battery provided in this embodiment is resembled in step (b) to replace the chlorinated cobalt chloride in step (b) to chloride, and the remaining steps and process parameters are the same as in Example 2.

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

No PUM Login to View More

Abstract

The invention provides a recycling method and application of a waste lithium ion battery, and relates to the technical field of battery recycling. The recycling method of the waste lithium ion batterycomprises the following steps: mixing positive and negative plates, a carbonaceous reducing agent and an optional chlorinating agent, roasting, leaching and separating the obtained roasted material to obtain a lithium-containing leaching solution and leaching residues, and preparing a lithium battery precursor from the leaching residues; wherein the positive plate and the negative plate are directly used as raw materials, and the step of preferentially separating the positive active material from the positive plate and the negative plate in advance is not needed, so that the operation procedures are reduced, the time and economic costs are reduced, and the reducibility and the contained energy of materials such as the current collector, the negative graphite carbon and a small amount of unseparated diaphragm plastic can be fully utilized; damage to the structure of the positive electrode active material is increased. Moreover, the introduction of the chlorinating agent not only increases the leaching rate of Li and achieves the purpose of preferentially extracting lithium, but also reduces the addition of other impurity metal elements.

Description

Technical field[0001]The present invention relates to the field of battery recovery, in particular, to a recovery method and application of a waste lithium ion battery.Background technique[0002]The lithium-ion battery is a new energy battery. It has a large extent to alleviate the dependence and destruction of humanity on natural resources, and its raw material toxicity is much lower than the cadmium-nickel battery, lead-acid battery, is gradually being gradually The society is accepted and is expected to be the leading future of new energy. In addition to low toxicity, the lithium battery has a long cycle life, high than energy, small self-discharge effect, small size, high operating voltage, has a wide range of temperature range, green environmental protection, and is widely used in 3C products ( Computer class, communication and consumer electronics), automotive (plug-in hybrid vehicles, pure electric vehicles, hybrid vehicles) and electric vehicles, etc. However, its life is low...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525H01M10/54H01M10/0525C22B7/00C22B26/12C22B23/00C22B47/00
CPCC22B7/007C22B23/0423C22B26/12C22B47/00H01M4/505H01M4/525H01M10/0525H01M10/54Y02E60/10Y02W30/84Y02P10/20
Inventor 王海北邓超群周起帆郑朝振刘三平
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD