Lab Manual Lithium Battery Stacking Machines for Pouch Cell

Lab Manual Lithium Battery Stacking Machines is suitable for the lamination process of battery cells. The positive and negative electrodes and the separator are laminated in a Z shape.

Main functions and features:

* Desktop type, can be placed on a common desktop;

* The machine is easy to adjust, operate and maintain;

* It is suitable for a large range of cell lamination;

* High working efficiency, with digital display counter;

* Using pedal switch to control the movement of the cylinder;

Purchase information:

If you are interested in our lamination stacking machine, please contact us for more information.

• Tel：138 3857 9492

• Email：carol@cysitech.com

• Contact：Carol Xu

• Wechat：15290599353

• WhatsApp/Skype: 13838579492

Technical parameters:

Application Case: Small Lithium Battery Production:

Background and Demand:

A startup company focuses on the research and development and production of small lithium batteries, which are mainly used in wearable devices, sensors, and small electronic products. The company is currently in the trial production stage and plans to produce small cylindrical lithium batteries (such as 14500 type) through a manual stacking machine to meet small batch and diversified customer needs. As the company is in the early stages of development, equipment investment needs to maintain a reasonable budget, and the production process must be simple and easy to control, and easy to debug and operate.

Equipment Selection:

The company chose a manual stacking machine suitable for small batch production and diversified needs. The equipment has the following features:

Manual operation: Through manual stacking, the operator can flexibly adjust the number of stacking layers and pressure according to needs, which is convenient for process adjustment.

Simple structure: The equipment has a simple structure, is easy to operate and maintain, and is suitable for initial small-scale production.

Diversity support: Supports different types of battery stacking, including cylindrical, square and soft-pack battery stacking processes, with strong adaptability.

Adjustment flexibility: The pressure and number of stacking layers of the equipment are adjustable to meet the needs of different battery specifications and different electrode materials.

High reliability: Although it is a manual operation, the equipment design ensures the precise stacking of each electrode, effectively avoiding problems such as misalignment and overlap.

Process flow:

1. Material preparation:

Electrode sheet: The positive and negative electrode materials are prepared through coating and drying processes and cut into sizes suitable for battery specifications.

Diaphragm sheet: Polyolefin materials such as PP or PE are used, and the diaphragm sheet needs to be cut to a size that matches the size of the electrode sheet.

Current collector: Aluminum foil is used as the positive current collector and copper foil is used as the negative current collector. After stamping and cutting, it is ready for lamination.

2. Manual lamination process

The lamination process begins: The operator manually stacks the positive electrode, diaphragm and negative electrode sheets one by one. After each layer is stacked, the operator needs to carefully check the alignment to ensure that there is no misalignment or overlap between the layers. This process requires high manual operation skills and meticulous inspection.

Lamination pressure adjustment: The manual lamination machine is equipped with a pressure control system. The operator can adjust the lamination pressure according to different materials and battery requirements to ensure a good combination between the electrode layer and the diaphragm. Through appropriate pressure, battery performance can be improved and internal resistance can be reduced.

Multi-layer stacking: According to the battery design requirements, the positive electrode, separator, and negative electrode are stacked alternately. After each layer is stacked, the operator needs to manually check whether it is stacked neatly to ensure the consistency of the battery.

Interlayer inspection: Each layer in the stacking process needs to be carefully checked to ensure that there is no misalignment or uneven stacking to avoid problems in the subsequent packaging process.

3. Stacking completion:

After the stacking is completed, the battery cell forms a multi-layer structure and is ready to enter the next process such as packaging and injection.

The manual stacking machine is simple to operate, suitable for small batch production, and it is also convenient for production personnel to adjust the production process according to needs.

4. Quality control:

After each batch of battery stacking is completed, the operator will conduct a comprehensive inspection to ensure the neatness of the stacking and the alignment accuracy between layers.

In order to ensure the consistency of the battery, the stacked battery cell will also be routinely tested, such as internal resistance and appearance inspection, to ensure that no abnormalities occur.

Challenges and solutions:

High operating accuracy requirements: Due to manual operation, some operators are prone to problems such as inaccurate alignment or overlap. The company ensures product consistency by strengthening operator training and regularly checking the stacking process.

Slow stacking speed: The speed of manual stacking is relatively slow, which limits production efficiency. As the order volume increases, the company plans to gradually introduce automated stacking equipment to improve production efficiency.

Experimental results and achievements:

Improved production flexibility: The manual stacking machine has a high process adjustment flexibility, which can adapt to the needs of different batteries and meet the needs of small batch production and customized products.

Stable battery performance: Through manual stacking, the stacking quality of each battery is well controlled, the contact between the stacking layers is good, the internal resistance is low, and the battery performance is stable.

Low production cost: Compared with automated equipment, the investment cost of manual stacking machines is low, which is suitable for the company's current production needs and budget. The manual operation used in production reduces the maintenance cost of the equipment and saves initial investment.

Summary:

By using manual stacking machines, the company has successfully improved the production capacity of small lithium batteries and can flexibly respond to the customized needs of different customers. During the production process, although manual operation is less efficient, it can provide a high degree of process adjustment space to ensure the consistency and high quality of the battery. In the future, as production demand grows, the company will consider gradually introducing automated stacking equipment to further improve production efficiency and meet higher market demand.