Semi Automatic Cylindrical Battery Winding Machine for Lithium Ion Cell Production

Product Overview

This semi-automatic cylindrical battery winding machine is engineered for the precision assembly of high-performance cylindrical lithium-ion cells. By combining manual electrode feeding with automated separator unwinding, precision core winding, automated station indexing, transverse termination taping, and seamless finished cell discharging, the equipment delivers an optimal balance of operational flexibility and industrial-grade throughput. It serves as an essential bridge between laboratory battery prototyping and fully automated gigafactory production.

Designed specifically for research institutes, pilot lines, and specialized cell manufacturing facilities, the system accommodates large-format and standard cylindrical cell formats, ranging from 28 mm to 60 mm in finished outer diameter. The integrated process guarantees structural uniformity, preventing core slippage, electrode dislocation, and physical damage during high-speed winding cycles.

Built on a rigid, vibration-dampened frame, this unit delivers exceptional mechanical repeatability and tension stability under continuous operating conditions. High-precision alignment mechanisms and dual active unwinding modules maintain tight cross-sectional tolerances, ensuring cell-to-cell consistency, high electrochemical reliability, and minimum production scrap rates exceeding 98% yield standards.

Key Features

• Dual Opposed Winding Needle Architecture: Features a single-pin pass-through winding core structure that ensures high concentricity and rigid mechanical support, facilitating rapid pin diameter changeovers from 8.0 mm to 15.0 mm.
• Semi-Automated Workflow Integration: Automates critical sequential steps—including separator pre-winding, main winding, turret indexing, precision separator cut-off, automated termination taping, and final cell unloading—to drastically reduce cycle times while minimizing operator error.
• Precision Transverse Termination Taping: Employs a motorized transverse tape applicator that places termination tape perpendicular to the electrode tabs without exerting excessive tensile stress on the finished roll, ensuring a flat, wrinkle-free finish.
• Active Separator Tension Regulation: Dual independent unwinding stations incorporate pneumatic regulators and proximity switch feedback loops to dynamically adjust web tension throughout the entire winding cycle, preventing separator stretching or necking.
• Integrated Electrode Dust Extraction: Built-in surface cleaning and dust removal mechanisms eliminate loose particulate matter and metallic burrs from cathode and anode strips prior to entering the winding zone, preventing micro-short circuits.
• Optimized Tooth-Cutter Pre-Winding: Implements specialized serrated cutter tooling for clean separator cutting and minimal pre-winding lead length, saving separator materials on high-volume production batches.
• Strict Three-Layer Wrapping Alignment: Enforces standard cylindrical battery internal geometries, guaranteeing that the separator fully encloses the negative electrode while the negative electrode completely encloses the positive electrode.
• Variable Speed Servo Drive: Allows fine digital speed profiling during initial lead-in, core acceleration, and terminal deceleration to maintain exact layer-to-layer registration across long electrode lengths up to 7000 mm.

Applications

Technical Specifications

Why Choose This Product

• Superior Geometric Repeatability: By enforcing high mechanical alignment standards with active closed-loop tensioning, this system guarantees that cathode, anode, and separator boundaries maintain strict ±0.5 mm relative alignment, critical for preventing catastrophic lithium dendrite formation.
• Broad Form Factor Adaptability: The modular design easily adjusts across wide dimensional ranges (electrode widths up to 318 mm and cell diameters up to 60 mm), protecting capital investments against evolving cylindrical cell standards from legacy 21700 to advanced 4680 formats.
• Industrial Build Quality and Reliability: Fabricated with high-grade tool steel winding pins, hard-anodized aluminum rollers, and heavy-duty pneumatic components, this equipment provides continuous, vibration-free operation under multi-shift manufacturing schedules.
• Minimal Maintenance and Fast Tooling Swaps: Tool-less single-side guide adjustments, quick-release winding needle couplers, and standard core adaptors reduce routine line retooling times to under 30 minutes, maximizing overall equipment effectiveness (OEE).
• Comprehensive Turnkey Engineering Support: Backed by dedicated technical specialists who provide customized pin machining, on-site commissioning, operator training, and process parameter optimization tailored to your active material recipes.

Contact our technical sales team today to request a customized quote or to consult with an engineer regarding your specific cell dimensions and winding process requirements.

Trusted by Industry Leaders