Lithium battery equipment serves as the cornerstone of lithium battery manufacturing. The production process of lithium batteries is extremely complex, encompassing over 30 intricate procedures that are interconnected and require the coordinated operation of various precision equipment.

Specific to the production process, the manufacturing process of lithium batteries can be divided into four main stages: electrode plate production, cell assembly, cell activation test, as well as module/pack sealing. Among them, the electrode plates production in the front stage and the cell assembly in the middle stage are crucial. They encompass the precise preparation of cathode and anode materials, high-precision winding or stacking processes, pre-sealing of cells, and the crucial step of electrolyte injection.

These procedures place extremely high demands on the precision, efficiency, and consistency of the equipment, serving as the core steps to ensure excellent performance and stable quality of lithium batteries.

1. Thermal Composite Slicing Machine

The thermal composite slicing machine independently developed by UW Laser is primarily used as a key equipment for electrode unit forming in lithium battery manufacturing. The thermally composite technology ensures the uniformity and consistency of the composite electrode, thereby guaranteeing the high quality of the battery cell. It is suitable for large-scale production and can meet the demands of high-volume manufacturing.

Furthermore, with the increasing demand for large-sized electrodes in the industry, thermal composite technology can adapt to this trend, addressing the limitations of traditional technologies that cannot meet the production requirements for large electrodes.

Highlights

Equipment Integration

The equipment can achieve integrated functions such as automatic unwinding of separators, automatic alignment of electrodes, and online detection of composite effects. It can reduce both site and equipment costs, while effectively enhancing production efficiency.

High Adaptability

The material box is compatible with both manual and automatic loading, can accommodate various electrode sizes, and is equipped with isolation protection and dust removal cleaning functions.

Precise Recognition

CCD recognizes the position of the electrode for positioning and correction, with a correction accuracy error of less than 0.1mm.

High-Precision Control

The key components such as separator unwinding, composite roller, cooling roller, and heating roller are all controlled by high-precision servo motors. The equipment utilizes electromagnetic heating to achieve temperature control with an accuracy of ±2℃. The robotic arm boasts a repeated positioning accuracy error of less than 0.02mm and a handling acceleration of up to 4G.

2. UW Thermal Composite Single-Station Stacking Machine

Currently, the mainstream stacking equipment on the market mainly includes four types: the Z-shaped stacking machine, the cutting and stacking machine, the thermal composite stacking machine, and thw rolling and stacking machine. Among them, the Z-shaped stacking technology is currently the most widely used in China.

The UW thermal composite single-station stacking machine stacks the composited negative and positive electrodes alternately. Compared to conventional stacking machines, it involves a higher level of technical difficulty.

Highlights

High Compatibility

It is compatible with multiple types of battery cells and has a compatibility range for electrode sheet length up to 1250mm.

High-Precision Design

The alignment accuracy error between adjacent electrode sheets is strictly controlled within ±0.3mm, and the overall alignment accuracy error of the battery cell is controlled within ±0.5mm.

Flexible Switching

The stacking method is flexible, supporting two modes: alternating stacking of thermally laminated positive and negative electrode sheets, and Z-shaped stacking.

Modular Design

The equipment layout is relatively regular, featuring spacious material loading spaces for material boxes and centralized unloading areas for finished products. It facilitates automatic material loading and unloading docking, as well as integration with logistics lines and production lines.

3. UW Single-Station Stacking Machine

The UW Single-Station Stacking Machine is suitable for automated cells assembly, capable of handling processed positive and negative electrode sheets as well as slit separators. The advanced technology of this equipment lies in its high compatibility, high stability, and integrability.

Highlights

High Compatibility

Adaptable to both manual and automatic feeding methods, it is compatible with various types of cells and can accommodate different tail winding turns. The platen pressure and hot pressing time are adjustable, making it suitable for both hot pressing and cold pressing modes.

High Stability

The electrode positioning and correction accuracy is high, and the handling robot also boasts high positioning accuracy and fast handling speeds.

Modular Design

It adopts an integrated modular design, facilitating changeovers for producing different prototype battery cells. The changeover of prototype materials can be completed within 2-3 hours.

Closed-Loop Control of Key Data

Online detection of separator tension and CCD inspection of electrode alignment ensure the precision and stability of cell assembly.