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

A continuous production device and process for lithium battery slurry

A production device and slurry technology, applied in electrode manufacturing, transportation and packaging, chemical instruments and methods, etc., can solve the problems of long mixing time and poor mixing quality, reduce industrial electricity consumption, save energy costs, reduce The effect of mixing time

Active Publication Date: 2021-02-26
SHANDONG AOYU POWER SUPPLY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a continuous production device and process for lithium battery slurry, which overcomes the problems of long mixing time and poor mixing quality in the prior art

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
  • A continuous production device and process for lithium battery slurry
  • A continuous production device and process for lithium battery slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] use as figure 1 The shown device is used to produce lithium battery slurry, including the following steps:

[0044] Production of cathode slurry:

[0045] (1) The solvent NMP with a mass ratio of 60:5:10:90, the glue solution (PVDF is dissolved in NMP, and the glue solution mass percentage concentration is 10%), the conductive agent SP and the active material lithium manganate are fed Add it into the mixing tank, the stirring speed is 1800r / min, and the stirring time is 20min, and the mixed slurry obtained after stirring and mixing enters the powder-liquid dispersion mixing pump through the first pipeline;

[0046] (2) The mixed slurry entering the powder-liquid dispersion mixing pump is dispersed and mixed for 30 minutes, the dispersion speed is 2500r / min, and the flow rate of the mixed slurry is 2-6m 3 / h, and then enter the storage tank through the second pipeline to obtain the standby lithium battery positive electrode slurry. Among them, 2-6m of materials can be...

Embodiment 2

[0052] use as figure 1 The shown device is used to produce lithium battery slurry, including the following steps:

[0053] Production of cathode slurry:

[0054] (1) The solvent NMP with a mass ratio of 100:38:20:80, the glue (PVDF is dissolved in NMP, and the concentration of the glue is 2%), the conductive agent KS and the active material lithium iron phosphate are fed Add it into the mixing tank, the stirring speed is 1500r / min, and the stirring time is 30min, and the mixed slurry obtained after stirring and mixing enters the powder-liquid dispersion mixing pump through the first pipeline;

[0055] (2) The mixed slurry entering the powder-liquid dispersion mixing pump is dispersed and mixed for 20 minutes, the dispersion speed is 4500r / min, and the flow rate of the mixed slurry is 2-6m 3 / h, and then enter the storage tank through the second pipeline to obtain the standby lithium battery positive electrode slurry. Among them, 2-6m of materials can be mixed per hour 3 . ...

Embodiment 3

[0061] use as figure 2 The shown device is used to produce lithium battery slurry, including the following steps:

[0062] Production of cathode slurry:

[0063] (1) Add solvent NMP, glue solution (PVDF dissolved in NMP, glue solution mass percentage concentration is 30%) and conductive agent KS with a mass ratio of 150:20:20:70 into the stirring tank through the feed port , the stirring speed is 1500r / min, the stirring time is 30min, the mixed slurry obtained after stirring and mixing enters the powder-liquid dispersion mixing pump through the first pipeline;

[0064] (2) The mixed slurry entering the powder-liquid dispersion mixing pump is dispersed and mixed for 20 minutes, the dispersion speed is 4500r / min, and the flow rate of the mixed slurry is 2-6m 3 / h, enter the secondary mixing tank through the second pipeline;

[0065] (3) Add the active material lithium iron phosphate into the secondary stirring tank, and continue stirring and mixing with the mixed slurry, the...

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a continuous production device and process for lithium battery slurry, which sequentially includes a stirring tank, a powder-liquid dispersion mixing pump and a storage tank; the stirring tank includes a feed port and a discharge port, and the The powder-liquid dispersion mixing pump includes a mixing inlet and a mixing outlet, the outlet of the mixing tank is connected to the mixing inlet of the powder-liquid dispersion mixing pump through the first pipeline, and the mixing of the powder-liquid dispersion mixing pump is The material outlet is connected with the material storage tank through the second pipeline. The lithium battery slurry mixed with the device and process of the present invention has better slurry quality and lower viscosity than the traditional process, and is more conducive to subsequent coating. It is found through testing that the viscosity of the slurry mixed by the traditional process is about 6000-9000mPa·s, while the viscosity of the slurry mixed by the device of the present invention is about 3000-5000mPa·s.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a continuous production device and process for lithium battery slurry. Background technique [0002] Traditional lithium battery positive and negative electrode mixing uses a mixer, which takes a long time, consumes a lot of power and the mixing quality of the slurry is not good. For example, when mixing materials for a negative electrode, first prepare the glue solution, then put the glue solution into the mixer, and add SP while stirring and dispersing. Stir at low speed to disperse, then stir at high speed to disperse, the time is 1.0~1.5h. The solvent and active substance are then added with stirring. Stir and disperse for 1.0 to 1.5 hours. After that, scrape the slurry and tank wall, and then stir and disperse at high speed for 3.0~4.0h. After the mixing is completed, the slurry is stored in a transfer tank for later use. During the whole mixing process, the s...

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): B01F13/10H01M4/04
CPCH01M4/04B01F33/80Y02E60/10
Inventor 邱松张益明孟祥辉李洪文
Owner SHANDONG AOYU POWER SUPPLY