Soft pack battery dry electrode forming machine

CY-BPC-DF200 Soft pack battery dry electrode forming machine is a solid state battery electrode sheet dry process film, and can continuously roll thin, cutting edge equipment, three rollers: independent setting pressure Max.10T; Can be independently set speed Max.40mm/S; The roller gap can be independently set to Max.1.5mm; Independent setting temperature, Max.150℃; Equipped with stainless steel support belt to prevent broken tape after forming, with low tension winding. The film thickness of negative electrode is 70μm, the film thickness of positive electrode is 120μm, and the ratio of positive and negative PTFE is less than or equal to 2%.

Product characteristics:

1. Three roller horizontal arrangement, independent pressure control; Independent temperature control; Independent electric regulating roller gap; Independent speed adjustable;

2. Roll compression can be repeated several times (to set the roll gap);

3. Built-in edge cutting function;

4. Small tension to prevent broken or stretched after forming;

5. The roller adopts imported special steel, segmented intelligent heating system, which can heat up to 150℃, and the hardness attenuation is less than 5%;

6. The patented electric heating roller has no pollution, accurate temperature control and good uniformity;

7. Automatically adjust the roll gap through the stepper motor;

8. Differential speed up to 10 times (related to film thickness, this parameter is only for reference);

9. Patented hydraulic balance rolling mechanism, pressure output and pressure stability;

Integral gantry frame, CNC precision machining, to ensure high stability.

Contact information:

If you are interested in our Soft pack battery dry electrode forming machine, please contact us for more information and a quote.

Phone：+86 136 6380 8508

Email：jason@cysitech.com

Sales manger：Jason.Zhang

WhatsApp:+86 150 3827 2566

Wechat：cykytech

Technical parameters：

 Application case

Experiment preparation

1. Material preparation: Prepare an appropriate amount of positive electrode material (such as lithium cobaltate), negative electrode material (such as graphite), conductive agent (such as carbon black) and binder (such as PVDF).

2. Tool preparation: In addition to the dry electrode forming machine, electronic scales, stirrers, gloves and other auxiliary tools need to be prepared.

3. Environment preparation: Ensure that the operation area is clean and dust-free, and that the temperature and humidity meet the technical requirements to avoid the impact of static electricity and dust.

Experimental procedure

1. Raw material mixing:

1. Use electronic scale to accurately weigh the required positive electrode material, negative electrode material, conductive agent and binder.

2. Put the measured material into the mixing device of the dry electrode forming machine and start the mixing procedure to ensure that the components are evenly mixed.

2. Electrode molding:

1. Pour the mixed electrode material into the hopper of the dry electrode forming machine.

2. Set the appropriate calender parameters, including pressure, speed and temperature. According to the characteristics of the electrode material, small batch tests can be carried out first and adjusted to the best state before being formally put into production.

3. Start the dry electrode forming machine, and the electrode material is pressed into the required thickness of the electrode sheet through the calender device.

3. Electrode cutting:

1. Take the pressed electrode sheet out of the forming machine and cut it into the required size and shape with the cutting tool.

2. Check the cut electrode sheet to ensure that the edges are neat and without cracks.

4. Electrode pretreatment:

1. Place the cut electrode on the operating table and check whether there are any defects or uneven places.

2. If necessary, use a polishing tool to lightly polish the electrode sheet to ensure a smooth surface.

5. Electrode assembly:

1. Send the treated electrode sheet to the subsequent battery assembly line and assemble it together with materials such as diaphragm and aluminum-plastic film.

6. Quality inspection:

1. Carefully check each electrode sheet to ensure uniform thickness, no cracks, no impurities.

2. Carry out appearance inspection and performance test on the assembled soft pack lithium battery to ensure that it meets the quality standard.

7. Performance test:

 Randomly select some samples for charge-discharge cycle test to evaluate key indicators such as capacity retention rate and internal resistance of the battery.

Result analysis

Through the use of dry electrode forming machines, the company achieved the following results in the electrode preparation and molding process of soft-pack lithium batteries:

Improve production efficiency: the dry process avoids the use of solvents, simplifies the production process, and shortens the preparation time of electrode materials.

Improve environmental performance: dry process reduces solvent volatilization and emission, reduces environmental pollution, in line with the concept of green production.

Enhanced electrode consistency: The high-precision mixing and calender system ensures the uniformity and consistency of the electrode material and improves the quality of the electrode sheet.

Improve battery performance: The electrode sheet prepared by the dry method has better electrical conductivity and mechanical strength, which helps to improve the overall performance of the battery, including charge and discharge efficiency and cycle life.