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

Recycling process and separation device of cathode material of waste lithium iron phosphate battery

A lithium iron phosphate battery, lithium iron phosphate technology, applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of difficult control of toxic by-products, technical difficulties, environmental pollution, etc., to reduce two Secondary pollution, improved economy, and high work efficiency

Active Publication Date: 2018-11-23
HEFEI UNIV OF TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical method can effectively recycle waste lithium iron phosphate batteries and obtain high-value materials, but the process is more complicated, the cost is higher, the technical difficulty is relatively large, and the toxic by-products of the reaction are difficult to control, which seriously pollutes the environment

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 process and separation device of cathode material of waste lithium iron phosphate battery
  • Recycling process and separation device of cathode material of waste lithium iron phosphate battery
  • Recycling process and separation device of cathode material of waste lithium iron phosphate battery

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0047] Disassemble the shell of the waste power supply to obtain the packaged lithium iron phosphate battery, discharge treatment, cut the aluminum shell, separate the battery core from the aluminum shell, peel off the plastic film covering the battery core, remove the electrolyte, and obtain the battery core.

[0048] Take out the positive electrode sheet and the negative electrode sheet of the lithium iron phosphate battery from the battery cell, and unfold the positive electrode sheet and the negative electrode sheet separately.

[0049] For the positive plate of lithium iron phosphate battery, the temperature is raised to 100°C by preheating, so that the residual electrolyte is completely volatilized; after the preheating is completed, mechanical separation is performed. Mechanical separation is to use a clamp to fix and tension the positive plate of lithium iron phosphate battery. For The tensioned lithium iron phosphate battery positive plate is ground on its surface with...

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 discloses a recovery technology and a separation device of a waste lithium iron phosphate battery cathode material. The recovery technology is characterized by firstly separating a lithium iron phosphate material from an aluminum foil by adopting a physical method of heating treatment and mechanical force separation, and then obtaining a novel lithium iron phosphate material by adopting the technologies of fine smashing, dissolving and impurity removing, and roasting, repairing and lithium supplementing; separating and obtaining a lithium iron phosphate recovery material by the separation device through a grinding mode of a millstone. The safe and industrial recovery method and the separation device are provided for recycling of the waste lithium iron phosphate battery cathode material, the material recovery rate can be increased, the cost is reduced, a chemical recovery technology is simplified, the resources are saved, and environment pollution is reduced.

Description

technical field [0001] The invention relates to the recovery and reuse of waste batteries, more specifically to a comprehensive recovery process and mechanical separation device for the positive electrode materials of waste lithium iron phosphate batteries. Background technique [0002] Lithium iron phosphate (LiFePO 4 ) Cathode materials are widely used in large electric vehicles, hybrid electric vehicles and other fields due to their advantages such as low price, good cycle performance, high theoretical specific capacity (170mAh / g), superior thermal stability, safety and reliability. The cycle life of lithium-ion power batteries is limited, generally 3 to 5 years. With the rapid development of the new energy automobile industry, a large number of waste power batteries are scrapped, which will inevitably cause a huge waste of resources and serious pollution of the environment. Therefore, from the aspects of cost reduction, environmental protection and resource utilization...

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 Patents(China)
IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 吴仲伟杨则恒朱华炳陈波
Owner HEFEI UNIV OF TECH
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