Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Comprehensive utilization method for waste lithium ion batteries

A lithium-ion battery, waste technology, applied in the field of waste new energy electric vehicle recycling, can solve the problems of low recycling efficiency, waste of resources, high energy consumption, and achieve the effect of fast discharge time

Active Publication Date: 2016-09-21
普定县银丰农业科技发展有限公司
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a comprehensive utilization method of waste lithium-ion batteries to solve many disadvantages in the existing lithium-ion battery recycling, such as high energy consumption, low recovery efficiency, and a large amount of waste of resources.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Take 5 waste lithium-ion batteries and use a 25kΩ resistor to perform short-circuit discharge for 20 minutes, and then let them stand for 2 hours;

[0023] Step 2: Open 3 liquid guide holes around the bottom of the spent lithium-ion battery with a shell, then put it into a centrifuge, adjust the centrifuge speed to 200r / s, centrifuge for 10min, and discharge the internal electrolyte. Put it into a container, and obtain the remaining body including the steel casing and the positive and negative electrode materials after the electrolyte is discharged;

[0024] Step 3: Add 18mL of LiOH solution with a concentration of 1mol / L to the electrolyte solution obtained in step 2, which can make the dangerous electrolyte solution generate a stable lithium salt solution, and then further concentrate and purify to obtain LiOH and Li 2 CO 3 ;

[0025] Step 4: Put the remaining body obtained in step 2 into an ultrasonic cleaning machine equipped with absolute ethanol for clea...

Embodiment 2

[0031] Step 1: Take 5 waste lithium-ion batteries and use a 50kΩ resistor to short-circuit discharge for 10 minutes and let them stand for 3 hours;

[0032] Step 2: Open 5 liquid guide holes around the bottom of the spent lithium-ion battery with a shell, then put it into a centrifuge, adjust the centrifuge speed to 300r / s, centrifuge for 15min, discharge the internal electrolyte, and electrolyze the discharged internal The liquid is put into the container, and the remaining body including the steel shell and the positive and negative electrode materials is obtained after the electrolyte is discharged;

[0033] Step 3: Add 18mL of LiOH solution with a concentration of 1mol / L to the electrolyte solution obtained in step 2, which can make the dangerous electrolyte solution generate a stable lithium salt solution, and then further concentrate and purify to obtain LiOH and Li 2 CO 3 ;

[0034] Step 4: Put the remaining body obtained in step 2 into an ultrasonic cleaning machine ...

Embodiment 3

[0040] Step 1: Take 5 waste lithium-ion batteries and use a 35kΩ resistor to short-circuit discharge for 15 minutes and let them stand for 2.5 hours;

[0041] Step 2: Open 4 liquid guide holes around the bottom of the spent lithium-ion battery with a shell, then put it in the centrifuge for 13 minutes, the centrifuge speed is 250r / s, discharge the internal electrolyte, and put the discharged internal electrolyte into the container , and obtain the remaining body including the steel casing and the positive and negative electrode materials after the electrolyte is discharged;

[0042] Step 3: Add 18mL of LiOH solution with a concentration of 1mol / L to the electrolyte solution obtained in step 2, which can make the dangerous electrolyte solution generate a stable lithium salt solution, and then further concentrate and purify to obtain LiOH and Li 2 CO 3 ;

[0043] Step 4: Put the remaining body obtained in step 2 into an ultrasonic cleaning machine equipped with absolute ethano...

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
Resistance valueaaaaaaaaaa
Hole diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for comprehensive utilization of waste lithium ions. Firstly, a resistor is used to perform short-circuit discharge on waste lithium ion batteries; secondly, a liquid conduction hole is opened around the bottom of the waste lithium ion battery with a shell to discharge the internal electrolyte, and the discharged internal The electrolyte is put into the container, and the remaining body including the steel shell and the positive and negative materials is obtained after the electrolyte is discharged; again, by adding LiOH solution to the obtained electrolyte, the dangerous electrolyte can be generated into a stable lithium salt solution , and then further concentrated and purified to obtain LiOH and Li 2 CO 3 ; Then adopt physical methods to separate the steel casing, the positive electrode material lithium cobaltate and the negative electrode material graphite for the remaining body of the gained; finally the positive electrode material lithium cobaltate is sequentially passed through alkali washing, pickling, and sodium carbonate to precipitate cobalt to obtain cobalt carbonate precipitation The obtained cobalt carbonate precipitate is placed in a high-temperature sintering furnace for calcination to obtain cobalt oxide products, thereby realizing green and efficient comprehensive recycling of waste lithium-ion batteries.

Description

technical field [0001] The invention belongs to the technical field of recycling waste and old new energy electric vehicles, and in particular relates to a comprehensive utilization method of waste and old lithium ion batteries. Background technique [0002] With the widespread popularization of electric vehicles, laptop computers, mobile phones, etc., the consumption of lithium-ion batteries is huge, and the consumption of non-renewable metal resources is quite large. Lithium-ion batteries are composed of positive electrodes, separators, negative electrodes, organic electrolytes, wiring piles, and battery casings. The positive electrode is generally made of lithium cobaltate, and the separator is generally a specially formed polymer film. The film has a microporous structure that allows lithium ions to pass through freely, but electrons cannot pass through. The negative electrode active material is graphite or carbon similar to graphite. The organic electrolyte is a carbon...

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): H01M10/54
CPCY02W30/84H01M10/54
Inventor 陈剑钟安祯
Owner 普定县银丰农业科技发展有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com