Semi-automatic Lamination Stacking Machine for Lithium battery manufacturing

Semi-automatic Lamination Stacking Machine is suitable for the lamination process of battery cells. It can stack the positive and negative electrodes and the diaphragm in a Z-shape. It is a device that can be used in the lamination process of lithium-ion battery electrodes. The device adopts an automatic tension control system for the diaphragm. The cylinder drives the diaphragm to move left and right to achieve Z-shaped lamination. The cantilever design is easy to operate. Compared with manual lamination machines, this equipment has the characteristics of high lamination efficiency, good lamination uniformity, and a wide range of applicable battery sizes. It is an ideal choice for R&D sample production and small-batch trial production equipment.

Main features

 The machine is easy to adjust, operate and maintain;

 It is suitable for a wide range of battery cell stacking sizes;

 Semi-automatic stacking and tension control system;

Automatic counting and zeroing function;

Automatically maintain the last used parameter status after power failure or non-use;

 The whole machine is suitable for a wide range of battery sizes;

 The cylinder movement is controlled by a foot switch;

 High work efficiency, with digital display timer;

 Desktop type, can be placed on an ordinary desktop, with exquisite and beautiful appearance.

 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

 Case: medium-sized lithium battery production

 Background and demand

A medium-sized lithium battery manufacturer focuses on providing power batteries for power tools, electric bicycles and energy storage systems. As the company's production scale gradually expands, it begins to need to improve production efficiency and ensure the stability of product quality. Due to the increasingly stringent requirements on the size and electrical performance of battery products, manual stacking machines cannot meet production needs. Therefore, the company decided to introduce a semi-automatic stacking machine to improve production efficiency, reduce labor intensity, and maintain high production flexibility.

 Equipment selection

The company chose a semi-automatic stacking machine suitable for medium-sized lithium battery production. The equipment has the following features:

 Semi-automatic operation: The equipment completes some operations through electric drive, such as automatic feeding and automatic positioning, which reduces the complexity and work intensity of manual operation.

High-precision stacking: The equipment has a precise alignment and pressure adjustment system to ensure high-precision alignment between the electrode sheet and the diaphragm layer.

High flexibility: Although it is semi-automatic, it still allows operators to adjust according to different product specifications to meet the production needs of different types of batteries.

Improved production efficiency: Semi-automatic operation effectively improves production speed, reduces manual intervention, and improves production efficiency.

Moderate footprint: Compared with fully automated equipment, semi-automatic stacking machines have a smaller footprint and are suitable for limited space in factories.

 Process flow

1.Material preparation

Electrode sheets: Positive and negative electrode sheets need to be cut and coated according to the specifications of lithium batteries. Commonly used electrode materials include lithium cobalt oxide, nickel cobalt aluminum (NCA) and nickel cobalt titanium (NCM).

Diaphragm sheets: Commonly used diaphragm materials are polyolefins (such as PE and PP). These diaphragm sheets need to be cut to a size suitable for the battery size.

Current collector: Aluminum foil is usually used for the positive electrode and copper foil is used for the negative electrode. After stamping and cutting, they are ready for stacking.

 2.Semi-automatic stacking process

Automatic feeding: The operator places the electrode sheets, diaphragm sheets and current collector materials in the feed trough, and the equipment automatically feeds them to the stacking position. The electrode sheets can be accurately fed into the workbench through the electric feeding system.

Automatic alignment: The semi-automatic stacking machine automatically aligns the positive and negative electrode sheets and diaphragm sheets through sensors and positioning systems to ensure that the electrode sheets and diaphragms of each layer are accurately aligned, reducing the misalignment problem caused by imprecise manual operation.

Lamination process: After the electrode sheets and diaphragms are stacked, the equipment will control the pressure to ensure the tight combination of each layer. The pressure system is adjustable, allowing flexible adjustment according to different materials and battery specifications.

Manual intervention: Although the stacking process is semi-automated, the operator still needs to check the placement and alignment of the materials to ensure that every link in the equipment operation process is correct. The operator can adjust the machine parameters such as pressure and speed as needed to meet the production needs of different batteries.

Multi-layer stacking: According to the battery design requirements, the positive electrode, negative electrode, and diaphragm sheets are stacked in sequence to complete multiple stacking layers. The operator monitors the stacking progress through the touch screen of the equipment to ensure a smooth production process.

 3.Quality control

Accuracy check: After each round of stacking, the equipment will perform accuracy inspection to ensure the consistency of alignment and pressure between electrode layers to avoid battery performance problems caused by imprecise stacking.

Size inspection: The automatic measuring system detects the size of the battery cell after stacking to ensure that it meets the specification requirements. If an abnormality is found, the equipment will automatically stop and alarm, and prompt the operator to make adjustments.

Interlayer pressure detection: The equipment also has a pressure monitoring function to monitor the pressure during the stacking process in real time to ensure the bonding force of each layer of electrode sheets.

 4.Stacking completed

After stacking, the battery cell is ready for the next step of packaging, injection and other operations. The stacking machine can be flexibly configured according to the different specifications of the battery to meet the diverse product needs.

Challenges and solutions

Production efficiency and quality balance: When starting to use the semi-automatic stacking machine, some operators are worried about the balance between speed and quality. In order to ensure quality, the factory has strengthened the operation training of employees and regularly performs machine maintenance to ensure that the equipment runs stably at high efficiency.

High flexibility requirements: Although the semi-automatic stacking machine has a certain degree of flexibility, manual intervention and adjustment are still required when handling batteries of certain special specifications. The company has adjusted the collaboration between operators and equipment to achieve the best balance between efficiency and precision in production.

Experimental results and achievements

Improved production efficiency: Compared with manual stacking, the semi-automatic stacking machine has greatly improved production efficiency and shortened the production cycle by more than 30%, which can meet the needs of mass production.

Product consistency: The high-precision alignment and pressure control system of the equipment ensures the precise stacking of each layer of electrodes, greatly improving the consistency and reliability of the product.

Enhanced flexibility: The semi-automatic stacking machine can flexibly adjust the production process, adapt to different battery specifications, meet customer customization needs, and enhance the adaptability of production.

 Summary

By introducing the semi-automatic stacking machine, the company has successfully improved production efficiency and product quality and met the production needs of medium-sized lithium batteries. The semi-automatic operation of the equipment greatly reduces the complexity of manual operation, improves the accuracy and consistency of the stacking process, and reduces errors caused by manual factors. With the continuous expansion of production scale, the semi-automatic stacking machine can support a more efficient production line layout while ensuring flexibility. In the future, the company plans to gradually transition to fully automated equipment according to market demand to further improve production scale and automation level.