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China Roller Press Calendering Machine for Lithium-ion Battery Electrodes - Leading Suppliers & Factory
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China Roller Press Calendering Machine for Lithium-ion Battery Electrodes - Leading Suppliers & Factory

Introducing our state-of-the-art calendering machine, meticulously designed for compressing electrode materials to precise thicknesses. This crucial process significantly boosts the packing density of the electrodes, which is essential for optimizing the electrochemical performance and energy density of lithium-ion batteries. As a leading factory in China, we pride ourselves on providing top-quality machinery that meets the demands of the industry. Trust our experienced suppliers to deliver innovative solutions that enhance your battery production capabilities
  • Brand WS
  • Original Dongguan, China
  • MOQ 1 PC
  • Lead time 2 Months
  • Certified: CE, UL

EQUIPMENT CHARACTERISTICS

The process of calendering in battery manufacturing involves the compression and smoothing of the electrode substrate, typically a thin metal foil coated with electrode slurry. This critical step is achieved using a rolling press machine, where controlled pressure is applied to the electrode materials between two rolls.

Compression and Smoothing

As the electrode substrate enters the calendering machine, it passes between precision-engineered rollers. These rollers exert controlled pressure on the electrode material, compacting it to enhance density and reduce porosity. This compression not only improves the mechanical strength of the electrode but also ensures optimal electrical conductivity throughout the battery cell.

Temperature Control

In addition to pressure, temperature control is often integrated into the calendering process. Heat can aid in the binding process of the electrode materials, promoting adhesion and stability. Uniform heating across the electrode ensures consistent material properties and thickness, crucial for reliable battery performance.

Key Features

1. Vibration Reduction: Specialized design features within the calendering machine minimize vibrations during the rolling process. This reduces the risk of belt breakage and ensures continuous operation without interruptions.

2. Stable Pressure: The machine maintains stable pressure throughout the rolling process, essential for achieving uniform electrode thickness and minimizing material deformation. Consistent pressure application helps in maintaining the structural integrity of the electrode and ensures predictable performance in battery cells.

3. High Roller Cylindricity: The precision-engineered rollers exhibit high cylindricity, meaning they are perfectly cylindrical with minimal deviation from true roundness. This characteristic contributes to uniform compression and smoothing of the electrode material, further enhancing the quality and reliability of the battery components.

In Conclusion

The calendering process in battery manufacturing is crucial for refining the electrode substrate, optimizing its physical properties, and preparing it for subsequent assembly into battery cells. By adhering to stringent control parameters such as stable pressure, controlled temperature, and vibration reduction, manufacturers can consistently produce electrodes with superior performance characteristics essential for advanced energy storage solutions.

SPECIFICATION OF EQUIPMENT

Product Calendering Machine 96x200 Calendering Machine 300x350 Calendering Machine 300x350 Type 2 Calendering Machine 400x450 Calendering Machine 600x650
Model WS-GY-96*200 WS-GY-300*350-1 WS-GY-300*350-2 WS-GY-400*450 WS-GY-600*650
Roller size φ96mm*200mm φ300mm×350mm φ300mm×350mm φ400mm*450mm φ600mm*650mm
Equipment dimension 526*35*370(mm) 1650mm×650mm×1250mm 1650mm×600mm×1200mm 2600*780*1500(mm) 1600*3600*2200(mm)
Equipment weight 95KG 3.5t 3t 5T 19T
Power 300W 10kw 5KW 14KW 32KW
Maximum linear speed of rolling 0~4m/min 10m/min 8m/min 2~20m/min 25m/min
Maximum working pressure 3T 60t 60t 500KN-3000KN 400T

FREQUENTLY ASKED QUESTIONS

What is the primary function of a calendering machine in battery production?
The main function is to compress and smooth the electrode substrate coated with slurry. This process compacts active materials, enhances density, reduces porosity, and boosts electrical conductivity and mechanical stability for battery cells.
Why is high roller cylindricity critical for electrode rolling presses?
High roller cylindricity guarantees consistent and even pressure across the full width of the material, preventing thickness variations and ensuring uniform electrochemical performance across the entire electrode foil.
How does temperature control benefit the calendering process?
Integrated heating aids in the binder activation and cohesion within electrode slurry, improving coating adhesion to the substrate while maintaining consistent mechanical properties across varying operational conditions.
What measures prevent foil or belt breakage during continuous operation?
Advanced vibration reduction designs, high-precision roller balancing, and smooth pressure distribution systems collectively reduce physical stress on the foil, mitigating breakage risks during high-speed rolling.
How do I choose between laboratory-scale and industrial rolling press models?
Model selection depends on required production capacity, roller width, linear speed requirements, and required rolling force. For R&D or lab testing, smaller units like the WS-GY-96*200 are ideal, while mass production lines require heavy-duty presses like WS-GY-600*650.
Can the rolling speed and working pressure be adjusted on these units?
Yes, each model is engineered with variable speed controls (ranging up to 25m/min depending on the model) and adjustable pressure settings to accommodate diverse electrode formulas and substrate thicknesses.