Optimized dispersion method for lithium battery positive electrode slurry, and slurrying device thereof

A positive electrode slurry and lithium battery technology, applied in chemical instruments and methods, measuring devices, mixing methods, etc., can solve the problems of adverse effects on the comprehensive performance of lithium batteries, insufficient and uniform dispersion, etc., to increase the detection range and avoid excessive The effect of more loss and improved accuracy

Inactive Publication Date: 2015-02-04
WANXIANG 123 CO LTD +2
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for optimizing the dispersion of positive electrode slurry for lithium batteries in order to overcome the problem that the cu

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  • Optimized dispersion method for lithium battery positive electrode slurry, and slurrying device thereof

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[0025] Example 1:

[0026] A method for optimizing dispersion of positive electrode slurry for lithium batteries, comprising the following steps:

[0027] 1) Disperse the slurry with different proportions in advance through a small test in advance, and then measure the electrical conductivity of the slurry at different temperatures in this state;

[0028] 2) Store and preset the data obtained in step 1) as the reference value in the controller connected to the conductivity tester;

[0029] 3) Real-time monitoring of the electrical conductivity of the slurry at different positions in the pulping device at different temperatures by the electrical conductivity tester, and comparing the obtained data with the preset reference value in the controller to evaluate the uniformity of the slurry , when the conductivity monitored in real time is consistent with the preset reference value, so as to determine the end time of pulping. Among them, two conductivity testers are used and th...

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Abstract

The invention relates to the technical field of lithium batteries, and specifically relates to an optimized dispersion method for lithium battery positive electrode slurry, and a slurrying device thereof. The optimized dispersion method for the lithium battery positive electrode slurry comprises the steps of (1) determining conductivities of slurries in different proportions when the slurries are fully and uniformly dispersed by lab-scale tests; (2) storing data obtained by the step (1) in microprocessors of conductivity testers and presetting the data as reference values; (3) monitoring the conductivities of the slurries in different positions at different temperatures in real time through the conductivity testers, and comparing the obtained data with the preset reference values in the controller so as to evaluate uniformity of the slurry, and determining a slurrying end time when the conductivity monitored in real time is fit to the preset reference value. The slurrying device comprises a main body. The main body is provided with a controller for controlling open and close of the slurrying device, three conductivity testers connected with the controller, and a stirrer. The dispersion situations of the slurry are mastered in real time and the slurrying end time can be controlled accurately, by using the method and the device.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a method for optimizing the dispersion of positive electrode slurry of lithium batteries and a slurry making device thereof. Background technique [0002] Lithium battery is a new type of high-energy battery successfully developed in the 20th century. Lithium batteries have the advantages of high voltage, high energy density, good cycle performance, small self-discharge, no memory effect, wide operating temperature range, etc. make a large impact. The preparation of lithium battery slurry is divided into positive and negative electrode slurry. The positive electrode slurry is composed of binder, conductive agent, active material, and solvent. Whether the positive electrode slurry is evenly dispersed will directly affect the battery performance such as the capacity of the battery, and then affect the performance of the battery. service life. At present, there is no co...

Claims

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Application Information

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IPC IPC(8): B01F3/00B01F15/00B01F7/18G01R27/02B01F23/00
Inventor 张兴国郑丁张景国董峰史离全吴赛舟
Owner WANXIANG 123 CO LTD
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