Automatic Cylindrical Lithium Battery Winding Machine for Cell Assembly

Product Overview

This automatic cylindrical lithium battery winding machine delivers precision, high-speed core assembly engineered for commercial battery manufacturing and advanced energy storage pilot lines. The system automates the entire cell winding workflow: active unwinding of cathode foils, anode foils, and dual separator films; dynamic tension regulation; static elimination; inline dust extraction; precision edge-position web guiding (EPC); high-speed winding; and automatic termination taping. By integrating multi-axis servo synchronization with automated short-circuit inspection and non-marking robotic offloading, this equipment ensures high yield rates, tight concentricity, and uniform layer alignment across continuous shifts.

Designed for cylindrical lithium-ion formats ranging from 16 mm to 28 mm in diameter, the equipment accommodates various battery chemistries, including NMC, LFP, NCA, and next-generation sodium-ion formulations. It serves demanding battery pack developers, high-rate power cell manufacturers, consumer electronics battery producers, and high-throughput research institutions requiring automated consistency. Flexible parameter programming permits rapid switching between cathode-first and anode-first feeding modes without requiring mechanical redesign.

Engineered for 24/7 industrial environments, this unit integrates high-rigidity linear slide assemblies, precision cam indexers, and isolated pneumatic blowing loops to sustain tight mechanical tolerances. The rigid mechanical construction dampens high-frequency vibrations during high-speed spindle rotation, maintaining operational acoustic noise below strict enterprise thresholds. Industrial teams can rely on this winding system for reduced electrode damage, elimination of micro-shorts, and dependable high-volume production.

Key Features

• Servo-Driven Indexing Turntable: Employs a dedicated servo motor paired with a precision cam divider mechanism to drive rotary station indexing, delivering high positioning accuracy and rapid station transition times.
• Dual Semi-Needle Spindle Mechanism: Utilizes an advanced dual semi-needle single-side needle extraction architecture that optimizes winding spindle dynamics, increases linear winding speeds, and guarantees smooth cell release.
• Five-Minute Quick-Change Tooling: Features an optimized spindle and clamp release system that allows complete winding needle changeover and resumption of normal production within five minutes.
• Precision Slide-Rail Modular Assembly: Replaces conventional fixed mountings with high-precision linear slide-rail structures across all winding stations, ensuring tight mechanical clearance fitting and smooth linear motion.
• Wide Cylindrical Format Compatibility: Fully compatible with cylindrical cell diameters from φ16 mm to φ28 mm and core widths from 50 mm to 60 mm, requiring only a mechanical pick-up clamp exchange and quick software recipe adjustment.
• Segmented Proportional Tension Control: Controls active unwinding stations for positive plates, negative plates, and separators via proportional pressure valves, enabling precise multi-stage tension profiling throughout the winding cycle.
• Dynamic Edge-Position Web Guiding (EPC): Incorporates high-sensitivity edge-detection sensors and fast-response alignment actuators on all material paths to eliminate winding skew and ensure tight edge alignment.
• Inline Dual-Station Dust Extraction: Integrates active vacuum dust removal nozzles directly at the electrode foil unwinding and cutting stations, effectively eliminating airborne particulate contamination.
• Integrated Short-Circuit Testing and Auto-Discharge: Features a dedicated short-circuit testing station with an integrated discharge circuit and protective safety enclosure, verifying cell insulation integrity in a single step.
• Anti-Wrinkle Roll-On Termination Taping: Applies protective termination tape using a rolling-action applicator head that prevents bubble entrapment, surface wrinkling, or tape edge lift.
• Non-Marking Robotic Manipulator Offloading: Uses a multi-axis robotic pick-and-place arm combined with a flat belt conveyor to transfer wound jelly rolls gently to downstream stations, eliminating core deformation.
• Ergonomic Sliding Operator Console: Mounts the primary human-machine interface (HMI) on a sliding track for flexible positioning, enhancing operator safety and operational convenience during coil changeover and maintenance.

Applications

Technical Specifications

Why Choose This Product

• Superior Mechanical Rigidity & Repeatability: Built on a heavy-gauge 3000 kg structural steel frame with slide-rail component alignment, this system eliminates spindle drift and guarantees consistent jelly roll concentricity across high-volume production shifts.
• Maximized Machine Uptime: The dual semi-needle spindle architecture combined with a 5-minute rapid changeover mechanism drastically reduces tooling change downtime when transitioning between 18650, 21700, and custom cylindrical battery formats.
• Zero-Defect Inline Quality Assurance: Integrated multi-stage EPC edge guiding, precision proportional tension control, contact short-circuit verification, and color-mark defective lane rejection safeguard downstream processes from compromised cells.
• Seamless Production Line Integration: Featuring an isolated right-side control cabinet and modular robotic conveyor offloading, the equipment connects smoothly with downstream reaming, can insertion, tab welding, and automated assembly systems.

Contact our technical engineering team today to request a quotation or discuss customized tooling and line integration for your battery manufacturing facility.

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