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A lithium-ion battery positive and negative electrode slurry mixing production line and production process

A technology for lithium ion batteries and positive and negative electrodes is applied in the field of lithium ion battery positive and negative electrode slurry mixing production lines and production processes. , the effect of reducing energy consumption

Active Publication Date: 2019-05-03
广州番中电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the raw materials are generally transported to the planetary mixer by manual or vacuum feeding for direct mixing. This relatively primitive pulping method will not only cause dust to fly and float because the raw materials are added from the top of the planetary mixer. The situation, but also due to the non-uniform dispersion due to the lack of pre-dispersion

Method used

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  • A lithium-ion battery positive and negative electrode slurry mixing production line and production process
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  • A lithium-ion battery positive and negative electrode slurry mixing production line and production process

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Experimental program
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Effect test

preparation example Construction

[0088] Whether it is the preparation of positive electrode slurry or negative electrode slurry, it is necessary to use a variety of different powder materials. Each powder material corresponds to a hopper. When working, the powder materials first need to be added to different hoppers of the feeding mechanism.

[0089] S2. The powder is measured by the weighing mechanism and transported to the twin-screw mixer for mixing;

[0090] The weighing mechanism measures the powder and transports it to the twin-screw mixer for mixing. During this process, the weighing mechanism adjusts the speed of powder feeding according to the mixing speed of the twin-screw mixer so that the twin-screw mixer can realize dynamic mixing. It can realize the mixing of powder more fully and efficiently.

[0091] S3, feeding the mixed powder into the bucket;

[0092] After the mixing of the ingredients is completed, the materials will be fed into the barrel. It should be noted that the number of barrels c...

Embodiment 1

[0121] PT300 dry mixing method (positive electrode slurry, taking lithium cobalt oxide as an example)

[0122]PT dry mixing pulping equipment consists of a set of weighing mechanism, RGV trolley system, solvent input mechanism, 4 PT7-300L planetary mixers, etc.; the weighing mechanism consists of one 600L measuring tank, two 400L measuring tanks, and 500L Composition of double screw mixing powder machine.

[0123] a1. Add active substances, conductive agents and binders to different hoppers of the feeding mechanism;

[0124] a2. The powder is measured by the weighing mechanism and then transported to the double-screw mixer. The double-screw mixer is rotating

[0125] The speed is 45rpm, and the powder is mixed for 20min;

[0126] a3. Feed the mixed powder into the bucket;

[0127] a4. According to the set route, the RGV trolley transports the material barrel to the idle planetary mixer;

[0128] a5. Add 50% solvent to the planetary mixer. The planetary mixer stirs the powd...

Embodiment 2

[0134] PT650 dry mixing method (negative electrode slurry, taking lithium cobalt oxide as an example)

[0135] The PT dry mixing pulping equipment consists of a set of weighing mechanism, RGV trolley system, solvent input mechanism, 6 PT7-650L planetary mixers, etc.; the weighing mechanism consists of one 1000L measuring tank, two 400L measuring tanks, and 1000L Composition of double screw mixing powder machine.

[0136] b1. Put graphite and binder into different hoppers of the feeding mechanism;

[0137] b2. The powder is measured by the weighing mechanism and then transported to the double-screw mixer. The double-screw mixer is rotating

[0138] The speed is 45rpm, and the powder is mixed for 20min;

[0139] b3. Feed the mixed powder into the bucket;

[0140] b4. According to the set route, the RGV trolley transports the material barrel to the idle planetary mixer;

[0141] b5. Add 50% of the solvent to the planetary mixer. The planetary mixer stirs the powder and solven...

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Abstract

The invention discloses a lithium ion battery positive and negative electrode slurry mixing production line and a production process, through the setting of a feeding mechanism, a weighing mechanism, a mixing mechanism, a conveying mechanism, a solvent input mechanism, a stirring mechanism and a slurry defoaming mechanism, and The method of mixing first and then stirring can not only reduce the mixing and stirring time, but also improve the uniformity of materials and reduce equipment investment and production costs. The lithium ion battery positive and negative electrode slurry mixing production line of the present invention is connected with a coating mechanism, including a feeding mechanism, a weighing mechanism, a mixing mechanism, a conveying mechanism, a solvent input mechanism, a stirring mechanism and a slurry defoaming mechanism; The mechanism is connected with the weighing mechanism, and the material is transported to the weighing mechanism; the weighing mechanism includes at least two sets of metering units, and the metering units include successively connected metering tanks and metering screw, and the metering screw It is connected with the mixing mechanism and delivers the metered material to the mixing mechanism.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a production line and a production process for mixing positive and negative electrode slurry of lithium ion batteries. Background technique [0002] With the development of science and technology and the improvement of people's material and cultural living standards, people's demand for batteries is increasing, and the requirements for battery performance are also getting higher and higher. Especially with the advent of a large number of industrial, civilian and portable electronic products brought about by the rapid development of the information and microelectronics industry, the research and development of electric vehicles, and the enhancement of environmental protection awareness, people are interested in small size, light weight, The demand for high-energy, safe and reliable batteries that can be recharged and used is more urgent. Lithium-ion battery is a new type of b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F15/04B01F13/10B01D19/02H01M10/0525
CPCB01D19/02H01M10/0525B01F33/812B01F33/813B01F33/81B01F35/832B01F2101/59Y02E60/10
Inventor 洪继西
Owner 广州番中电气设备有限公司
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