Precision Transfer Coating Machine for Lithium Ion Battery Electrodes

Product Overview

This precision transfer coating machine is engineered for coating lithium-ion battery positive and negative electrode sheets with prepared slurry. The integrated line combines unwinding, coating-head, oven, traction, rewinding, and electrical-control functions to apply slurry uniformly to a substrate, dry the coating, and produce a rewound electrode roll ready for downstream processing. It supports control of coating dimensions and coating weight within the applicable process range.

The equipment is intended for battery electrode development and production workflows using aluminium foil for positive electrodes and copper foil for negative electrodes. It accommodates lithium iron phosphate and ternary positive-electrode slurry systems, along with graphite negative-electrode slurry. Continuous and intermittent coating modes support electrode formats that require uninterrupted coated areas or controlled uncoated gaps for subsequent cell manufacturing steps.

Designed around a complete roll-to-roll process path, this system provides coordinated material transport from unwinding through drying and collection. Its specified foil-width capability, coating-width capacity, oven configuration, roll-load rating, and mechanical speed provide a practical platform for controlled electrode preparation under demanding battery R&D and pilot-process conditions.

Key Features

• Integrated Roll-to-Roll Process Line: The equipment combines unwinding, precision slurry coating, oven drying, traction, rewinding, and electrical control in one coordinated process. This configuration prepares coated electrode rolls for subsequent battery-cell manufacturing operations.

• Positive and Negative Electrode Capability: The unit is configured for aluminium-foil positive electrodes and copper-foil negative electrodes. It supports positive slurries based on lithium iron phosphate or ternary materials and negative slurries based on graphite.

• Continuous and Intermittent Coating Modes: Both electrode sides support continuous coating and intermittent coating. The defined minimum gap length of 5 mm and minimum coating length of 30 mm enable controlled patterning where electrode design requires uncoated sections.

• Up to 300 mm Coating Width: A maximum coating width of 300 mm supports electrode development and process work across the stated substrate-width range. The 400 mm roller-face width provides the roll-handling geometry specified for the system.

• Defined Coating Thickness and Weight Windows: The unit supports single-side dry coating thickness from 50 to 250 µm for both electrode types. It also addresses the distinct single-side coating-weight ranges required for positive and negative electrode processes.

• Nine-Metre Electric Heating Oven: The single-layer oven uses electric heating and comprises three 3 m sections for a total length of 9 m. With a maximum oven temperature of 140℃, the drying stage is integrated directly into the coating and rewinding workflow.

• High-Capacity Roll Handling: Both unwinding and rewinding accommodate rolls up to φ300 mm diameter and 100 kg. Compatibility with metal, ABS plastic, and paper cores provides flexibility for the specified 3-inch core format.

• Process-Linked Operating Speeds: Positive-electrode coating is specified at 1 to 4 m/min, while negative-electrode coating is specified at 1 to 5 m/min. The mechanical no-load speed reaches a maximum of 6 m/min, supporting coordinated transport through the equipment.

• Material Condition Awareness: The process is designed around foil and slurry conditions that directly affect web transport and coating results. Foil used for acceptance should be free from looseness, uneven thickness or weight, surface oil contamination, and other conditions that can affect running or coating performance.

Applications

Technical Specifications

Why Choose This Product

• Complete electrode-coating architecture: The coordinated unwinding, coating, drying, traction, and rewinding arrangement supports a clear and controlled process flow from prepared slurry to collected electrode roll.

• Specification-led process control: Defined limits for foil dimensions, slurry solids, density, viscosity, dry thickness, coating weight, coating speed, and intermittent-pattern dimensions give technical teams a concrete basis for process planning.

• Robust roll-handling capacity: The specified 100 kg capacity and φ300 mm maximum diameter at both ends of the line support substantial material handling within the stated roll format.

• Flexible positive and negative electrode processing: Aluminium-foil cathode and copper-foil anode workflows are addressed with their respective slurry materials, solvents, and operating ranges.

• Premium process investment: The integrated 9 m electric-heating oven, defined mechanical-speed capability, and full roll-to-roll layout are suited to organizations that value repeatable electrode preparation and durable process capability over isolated equipment functions.

Contact us for a quote or a custom solution aligned with your electrode substrate, slurry, coating-pattern, and process-capacity requirements.

Trusted by Industry Leaders