Method for monitoring dispersion uniformity of lithium ion battery slurry on line

A lithium-ion battery, uniformly dispersed technology, applied in the preparation of secondary batteries, battery electrodes, test samples, etc., can solve the problems of unguaranteed safety performance, poor reliability of evaluation data, and long evaluation period, etc. Achieve the effect of saving production time, shortening evaluation cycle, and enhancing reliability

Inactive Publication Date: 2021-01-29
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The uniformity of the battery slurry is good, and the prepared battery has high consistency in capacity, internal resistance, etc., and the safety performance of the battery is good. Otherwise, the consistency is poor, and the safety performance cannot be guaranteed.
Nowadays, most l

Method used

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  • Method for monitoring dispersion uniformity of lithium ion battery slurry on line
  • Method for monitoring dispersion uniformity of lithium ion battery slurry on line
  • Method for monitoring dispersion uniformity of lithium ion battery slurry on line

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] S1, a first electrode group and a second electrode group are arranged on the inner wall of the mixing tank 1 of the mixing machine, wherein the first electrode group is located below the liquid level of the lithium-ion battery slurry 6, and is composed of a copper electrode 2 and a copper electrode 9, The second electrode group is located at the bottom of the mixing tank 1 of the mixing machine, and consists of a copper electrode 3 and a copper electrode 10. The first electrode group and the second electrode group are respectively connected to the resistance meter 12 through the double-pole double-throw switch 11; A dispersing shaft 4 and a stirring shaft 5 are arranged inside the stirring tank 1, a dispersing disc 8 is arranged at the lower end of the dispersion shaft 4, and a stirring paddle 7 is arranged at the lower end of the stirring shaft 5;

[0025] S2. Drive the dispersing plate 8 by the dispersing shaft 4 and the stirring paddle 7 by the sti...

Example Embodiment

[0031] Example 2

[0032] S1, a first electrode group and a second electrode group are arranged on the inner wall of the mixing tank 1 of the mixing machine, wherein the first electrode group is located below the liquid level of the lithium-ion battery slurry 6, and is composed of a copper electrode 2 and a copper electrode 9, The second electrode group is located at the bottom of the mixing tank 1 of the mixing machine, and consists of a copper electrode 3 and a copper electrode 10. The first electrode group and the second electrode group are respectively connected to the resistance meter 12 through the double-pole double-throw switch 11; A dispersing shaft 4 and a stirring shaft 5 are arranged inside the stirring tank 1, a dispersing disc 8 is arranged at the lower end of the dispersion shaft 4, and a stirring paddle 7 is arranged at the lower end of the stirring shaft 5;

[0033] S2. Drive the dispersing plate 8 by the dispersing shaft 4 and the stirring paddle 7 by the sti...

Example Embodiment

[0040] Example 3

[0041] S1, a first electrode group and a second electrode group are arranged on the inner wall of the mixing tank 1 of the mixing machine, wherein the first electrode group is located below the liquid level of the lithium-ion battery slurry 6, and is composed of a copper electrode 2 and a copper electrode 9, The second electrode group is located at the bottom of the mixing tank 1 of the mixing machine, and consists of a copper electrode 3 and a copper electrode 10. The first electrode group and the second electrode group are respectively connected to the resistance meter 12 through the double-pole double-throw switch 11; A dispersing shaft 4 and a stirring shaft 5 are arranged inside the stirring tank 1, a dispersing disc 8 is arranged at the lower end of the dispersion shaft 4, and a stirring paddle 7 is arranged at the lower end of the stirring shaft 5;

[0042] S2. Drive the dispersing plate 8 through the dispersing shaft 4, and drive the stirring paddle ...

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Abstract

The invention discloses a method for monitoring dispersion uniformity of a lithium ion battery slurry on line. The method comprises the following steps: arranging a plurality of electrode groups on the inner wall of a slurry mixing machine stirring tank, wherein at least one electrode group is positioned below a liquid level surface of the lithium ion battery slurry, and at least one electrode group is positioned at the bottom of the slurry mixing machine stirring tank; and each electrode group is connected with a resistance meter; and stirring a lithium ion battery slurry, measuring the resistivity of each electrode group at set intervals by using the resistance meter, ending stirring when the resistivity, measured by the resistance meter, of each electrode group is basically kept unchanged, and judging the dispersion uniformity of the slurry according to the difference between the resistivity of each electrode group. According to the method, excessive stirring can be avoided, production time is saved, the uniformity of the obtained lithium ion battery slurry can be effectively and scientifically judged, an evaluation period of the lithium ion battery slurry is shortened, and thereliability of evaluation data is enhanced.

Description

technical field [0001] The invention relates to the technical field of lithium-ion battery production, in particular to a method for on-line monitoring the dispersion uniformity of slurry of lithium-ion batteries. Background technique [0002] In recent years, with the vigorous development of new energy technology, the production technology of new energy vehicles has also become increasingly sophisticated. As the core component of new energy vehicles, lithium-ion batteries still face many challenges in manufacturing. The safety and consistency of batteries have always been difficult issues that plague the battery industry. To solve the problem of battery consistency, we must start from the source of battery production. Mixing is to mix the materials for lithium-ion batteries evenly. This is the first step in battery production and the basis for ensuring battery consistency. The uniformity of the battery slurry is good, and the prepared battery has high consistency in terms ...

Claims

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Application Information

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IPC IPC(8): G01N27/07G01N1/38H01M4/1391H01M4/1393H01M4/1395H01M4/1397H01M10/058H01M10/0525
CPCG01N27/07G01N1/38H01M4/1391H01M4/1393H01M4/1395H01M4/1397H01M10/058H01M10/0525Y02E60/10Y02P70/50
Inventor 张金华汪伟郑刚
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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