Rapid and efficient lithium ion battery negative electrode homogenate stirring method

A technology of a lithium-ion battery and a stirring method, which is applied in the field of lithium-ion batteries, can solve the problems of easy holding of paddles at high speed, easy overload alarm of motor current, large influence on efficiency and equipment cost, etc.
CN113244831APending Publication Date: 2021-08-13河南克能新能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
河南克能新能源科技有限公司
Publication Date
2021-08-13

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Abstract

The invention provides a rapid and efficient lithium ion battery negative electrode homogenate stirring method. The method comprises the following steps: 1) adding a glue solution into powder while stirring; 2) continuing to add the glue solution, and stirring; (3) adding the glue solution and N-methyl pyrrolidone, and stirring; and 4) adding the butadiene styrene rubber, then adding the rest of the glue solution, and stirring. Compared with the prior art, the glue solution is divided into four parts, the mixing sequence of each step and the amount of the added glue solution are controlled, and the stirring speed and time of each step are controlled, so that uniform dispersion of the slurry is facilitated, and the fineness, stability and rheological property of the slurry and the cycle performance of a battery cell are improved.
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Description

technical field

[0001] The invention relates to the field of lithium ion batteries, in particular to a fast and efficient method for homogenizing and stirring negative electrodes of lithium ion batteries. Background technique

[0002] Lithium-ion batteries have the advantages of high energy density, high cycle times, low self-discharge, low pollution, and no memory effect. Based on its advantages, since the invention of lithium-ion batteries, it has been widely used in all aspects of life, such as smartphones, automotive power batteries, smart wearable devices, small power batteries, PT products, etc., and has become the most widely used secondary battery. Battery.

[0003] The most critical process of lithium-ion battery production is the production of slurry. At present, there are various equipment for slurry production, but the market is still dominated by double-planetary agitators and three-planetary agitators (without dispersing discs). Double planetary mixers genera...

Claims

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