Supercapacitor Semi Automatic Winding Machine for Cylindrical Lithium Ion Cells

Product Overview

This semi-automatic winding system is designed for precision winding of cylindrical lithium-ion battery cells. Operators manually feed positive and negative electrode sheets into the winding section, where the equipment interleaves them with separator material, performs the programmed winding process, applies termination tape automatically, and discharges the finished cell automatically. Its single-needle through-winding architecture supports accurate formation while keeping needle replacement straightforward.

The equipment is suited to cylindrical cell development, pilot production, and manufacturing processes requiring controlled winding of electrode and separator materials. It supports separator widths and electrode widths from 33-150 mm, accommodating cylindrical cells with applicable outside diameters of ∮35-62∮ mm. The process is engineered to achieve the specified layer relationship: separator wrapping the negative electrode and negative electrode wrapping the positive electrode.

Built around dedicated winding, station-transfer, separator-unwinding, electrode-guiding, taping, unloading, and control assemblies, this unit is configured for repeatable operation. Active separator unwinding, adjustable winding speed, dust removal, and controlled transverse tape placement help maintain stable processing under defined material and alignment conditions.

Key Features

• Single-Needle Through-Winding Structure: Two winding assemblies use a single-head through-winding configuration to support winding accuracy and convenient winding-needle replacement. Needle specifications are available from ∮6 mm to ∮10 mm according to customer requirements.

• Semi-Automatic Process Sequence: Operators introduce the positive and negative electrode sheets, while this system performs winding, needle changing, termination-tape application, and cell unloading automatically. This division of work supports direct operator control at material entry with automatic handling of the subsequent winding operations.

• Active Dual Separator Unwinding: Two separator-unwinding assemblies actively unwind the separator rolls using pneumatic adjustment control. A tension proximity-switch control method automatically and smoothly adjusts tension during winding, helping maintain controlled separator feed throughout the cycle.

• Adjustable Winding Speed: The winding needle speed is adjustable, allowing the operating process to be set in line with the selected material and winding requirement. This provides a controllable operating variable for cylindrical cell winding rather than a fixed winding condition.

• Transverse Termination Tape Application: Termination tape is applied transversely, with the tape perpendicular to the electrode tab. The tape is applied flat, its position can be precisely controlled, and the method is designed to avoid pulling the cell tight during taping.

• Defined Electrode and Separator Wrap Sequence: The process is configured so that the separator fully wraps the negative electrode and the negative electrode wraps the positive electrode. Separator pre-winding uses a toothed-knife process intended to reduce the required pre-winding separator length.

• Integrated Electrode Dust Removal: A dedicated electrode-sheet dust-removal device is included in the process equipment. This supports cleaner electrode handling before and during the winding operation.

• Convenient Material Guidance and Changeover: Two electrode-guiding assemblies provide single-side adjustment for convenient setup. The equipment is designed for convenient operation, with adjustment and specification changes described as simple and rapid.

• Controlled Alignment Capability: When supplied electrode and separator materials meet the stated width, curvature, and roll-form conditions, the winding process can achieve separator and electrode alignment errors below ±0.5 mm. The finished cross-section alignment is specified at ±0.5 mm.

• Automatic Station Transfer and Unloading: A station-transfer assembly moves work between the winding and tape-application stations. A combined taping and unloading assembly completes termination taping and automatic cell discharge after winding.

Applications

Technical Specifications

Why Choose This Product

• Purpose-Built Winding Architecture: The two-set single-head through-winding arrangement, dedicated station transfer, and integrated taping and unloading functions provide a complete equipment configuration for the stated cylindrical-cell winding process.

• Measurable Alignment Control: Under the specified incoming-material conditions, this system supports separator and electrode alignment errors below ±0.5 mm, with finished cross-section alignment specified at ±0.5 mm.

• Stable Separator Handling: Dual active separator unwinding with pneumatic adjustment and proximity-switch tension control is designed to smooth tension changes during winding, supporting consistent separator delivery.

• Practical Production Operation: Manual electrode entry is paired with automatic winding, needle change, transverse tape application, and unloading. Single-side electrode guidance and convenient needle replacement support efficient adjustment and specification changeover.

• Process-Focused Build Quality: Integrated dust removal, controlled transverse tape placement, separator outer-wrap finishing, and the stated ≥98% qualification rate excluding non-equipment factors focus the equipment on reliable wound-cell output.

Contact us for a quote or a custom configuration matched to your cylindrical cell dimensions, winding-needle requirements, and material specifications.

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