Electrode Slitter
Lithium Battery Electrode Sheet Continuous Slitting Machine 200 to 560 mm Slitting Width
Item Number : FQ03
Price varies based on specs and customizations
- Guaranteed Slitting Width
- 200-560 mm
- Slit Width Accuracy
- +/-0.05 mm
- Mechanical Running Speed
- 50 m/min
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Product Overview
This system is a continuous roll-to-roll slitting machine for calendered lithium battery positive and negative electrode sheets. It unwinds coated electrode rolls, guides the web through a configured circular-knife set, and rewinds the separated strips onto upper and lower differential shafts. Independent edge-scrap collection, closed-loop tension control, web guiding, and dust removal work together to keep material travel stable throughout the process.
The equipment supports calendered electrodes used with lithium iron phosphate, lithium cobalt oxide, lithium manganate, ternary materials, nickel cobalt manganese oxide, lithium titanate, carbon, and graphite systems. It is suited to battery electrode production lines that require multiple continuous slit strips, including the specified 56/58 mm, one-out-nine arrangement, while accommodating incoming foil widths up to 560 mm.
Built for repeatable industrial operation, this unit combines controlled web handling with precision rotary shearing and stable rewinding. Its process targets address the conditions procurement and production teams monitor closely: slit-width accuracy, metal-burr control, strip straightness, winding alignment, dust removal, and sustained equipment availability.
Key Features
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Continuous Multi-Strip Rotary Slitting: Circular disc knives perform simultaneous multi-strip roll shearing, enabling continuous conversion of calendered electrode sheets. The cutting configuration is arranged to meet the required process width and includes knives, spacers, and knife sleeves for each knife holder.
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Closed-Loop Tension Control: An automatic, continuous closed-loop tension control system manages web tension from unwind through slitting and rewind. Stable tension transmission helps maintain smooth material travel and supports consistent cut quality across the roll.
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Precision Web Guiding: The unwind correction controller provides a travel range of +/-50 mm with +/-0.2 mm accuracy. Automatic guiding reduces lateral web deviation before the material enters the knife group, supporting orderly strip formation and rewinding.
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Controlled Slit Accuracy: The equipment is specified for +/-0.05 mm slit-width accuracy. This level of control is important when preparing repeatable electrode strip formats for downstream cell assembly operations.
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Burr and Straightness Management: The specified longitudinal metal burr is less than 8 um beyond the coating surface, while transverse metal burr is less than 10 um in the electrode direction. Electrode meandering is specified at +/-0.5 mm per 1000 mm, helping maintain strip geometry within the defined process window.
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Dual Differential-Shaft Rewinding: Upper and lower differential-shaft rewind units separately collect the slit electrode strips. The maximum rewind width is 650 mm with a 40# differential shaft, and rewind accuracy is specified at +/-0.4 mm.
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Integrated Dust Removal: A cleaning device brushes off and extracts loose powder after slitting, with an upper-knife dust-extraction arrangement included. This supports cleaner strip handling where surface debris could affect subsequent production steps.
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Robust Edge-Scrap Collection: An independent nip-roll collection system receives edge scrap, and its tension can be adjusted manually. It processes edge trim greater than 3 mm; a 5 mm edge trim is recommended to improve waste-strip stability.
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Industrial Throughput Capability: Mechanical speed is continuously adjustable to a maximum of 50 m/min, with a specified slitting speed of 20-50 m/min depending on achieved slit quality. The system is specified for equipment availability of at least 95%.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Lithium iron phosphate electrode production | Slits calendered positive and negative electrode rolls used in lithium iron phosphate cell manufacturing. | Controlled web handling supports stable preparation of multiple electrode strips from wide parent rolls. |
| Nickel cobalt manganese electrode processing | Converts calendered electrode sheets for nickel cobalt manganese oxide material systems into specified strip formats. | Precision rotary shearing helps maintain defined slit widths and controlled metal-burr performance. |
| Lithium cobalt oxide and lithium manganate cell lines | Processes coated and rolled electrode materials for lithium cobalt oxide and lithium manganate battery manufacturing. | Dual upper and lower rewinding separates slit strips into orderly finished rolls. |
| Lithium titanate electrode conversion | Handles calendered lithium titanate electrode material within the supported foil, electrode-thickness, and roll-diameter limits. | Closed-loop tension and automatic web guiding promote stable movement of sensitive coated webs. |
| Graphite and carbon anode preparation | Slits graphite or carbon-based negative electrode sheets after coating and calendering. | Integrated brushing and extraction remove loose powder generated around the slitting stage. |
| Pilot-line electrode format development | Produces repeated multi-strip widths, including the stated 56/58 mm one-out-nine configuration, for process development and evaluation. | Adjustable continuous operation allows teams to establish slitting conditions based on actual cut results. |
| Battery manufacturing edge-trim recovery | Collects side trim generated during electrode strip conversion using dedicated waste handling. | Independently adjustable scrap tension helps maintain stable edge-material collection. |
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Site-facing item number | FQ03 | |
| Suitable electrode systems | Lithium iron phosphate, lithium cobalt oxide, lithium manganate, ternary materials, nickel cobalt manganese oxide, lithium titanate, carbon, graphite, and related systems | For coated and calendered electrode sheets |
| Unwind type | Single-shaft center unwind | |
| Splicing method | Manual web splicing | |
| Tension control | Automatic closed-loop, continuous tension control system | |
| Slitting method | Circular disc knives for simultaneous multi-strip continuous rotary shearing | Knife-type roll slitting |
| Guaranteed slitting width | 200-560 mm | |
| Slitting specification | 56/58 mm, one-out-nine, two groups | Each knife holder includes knives, spacers, and knife sleeves |
| Effective slitting width | Maximum 530 mm | |
| Slit-width accuracy | +/-0.05 mm | |
| Roller-face design width | 650 mm | |
| Mechanical running speed | 50 m/min | |
| Mechanical speed setting | Maximum 50 m/min, continuously adjustable | |
| Slitting speed | 20-50 m/min | Determined by slitting result |
| Slitting acceptance speed | 50 m/min | |
| Electrode thickness range | 80-250 um | |
| Slittable electrode thickness | 90-300 um | |
| Incoming aluminum foil thickness | 10-30 um | Width 100-560 mm; maximum roll diameter 450 mm |
| Incoming copper foil thickness | 6-30 um | Width 100-560 mm; maximum roll diameter 450 mm |
| Adaptable copper foil thickness | 5-20 um | |
| Adaptable aluminum foil thickness | 10-25 um | |
| Maximum foil width | 560 mm | |
| Maximum unwind roll diameter | Phi 450 mm | |
| Maximum unwind weight | 250 kg | |
| Unwind core inside diameter | Phi 3 inch (Phi 76.2 mm) | |
| Web-guiding controller travel and accuracy | +/-50 mm; +/-0.2 mm | Unwind correction control |
| Rewinding method | Upper and lower sets of differential-shaft winding devices | |
| Differential-shaft configuration | Nishimura method | |
| Maximum rewind width | 650 mm | Equipped with 40# differential shaft |
| Maximum rewind diameter | Phi 450 mm | |
| Rewind shaft diameter | Phi 3 inch inside diameter | Rewind core supplied by the user |
| Rewind accuracy | +/-0.4 mm | |
| Rewind pressure roller | Two-wheel rolling roller | Helps prevent wound-roll edge curl |
| Longitudinal metal burr | Less than 8 um | Beyond electrode coating surface; in the direction beyond the electrode |
| Transverse metal burr | Less than 10 um | In the electrode direction |
| Electrode meandering | +/-0.5 mm/1000 mm | Curvature in the slitting direction; measured by fixing both ends of a flat strip against a one-meter ruler and checking the maximum gap |
| Slitting knives | Domestic tungsten carbide alloy knives | |
| Standard supplied knife sizes | Phi 100 x Phi 65 x 0.7 (30 degrees); Phi 100 x Phi 55 x 2.0 (90 degrees) | Factory standard |
| Minimum usable upper-knife outside diameter | Phi 96 mm | |
| Cleaning system | Dust-removal device brushes and extracts floating powder after slitting; upper-knife dust extraction included | |
| Edge-scrap handling | Independent nip-roll collection device | Edge-scrap tension manually adjustable; edge scrap greater than 3 mm, with 5 mm recommended for stable collection |
| Electrical supply | Three-phase 380 V / 30 A / 50 Hz | |
| Air consumption | 450 L/h | |
| Total power | Approximately 5 kW | |
| Equipment availability | At least 95% | |
| Overall equipment dimensions | Approximately 1800 x 2200 x 1900 mm | Length x width x height |
| Dust collector dimensions | Approximately 800 x 600 x 1400 mm | Length x width x height |
| Knife-holder cart dimensions | Approximately 1200 x 400 x 1000 mm | Length x width x height |
| Weight | Approximately 3.5 t | |
| Standard equipment color | Dark gray | |
| Included documentation | Chinese operation manual, equipment maintenance manual, and documentation for purchased components | |
| Operating sequence | Transfer-cart loading to unwind shaft, splicing platform, traction roller, knife group, roller group, upper and lower differential-shaft rewinding, and edge-scrap winding | Set required electrode tension, switch web guiding to automatic mode, and start automatic slitting, winding, and collection |
Why Choose This Product
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Production-Focused Web Control: Closed-loop tension control, automatic correction, and dedicated traction and roller stages are integrated around the slitting process to support smooth, stable electrode travel.
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Measured Quality Targets: Specified controls for slit width, burr level, meandering, and rewind accuracy give engineering and procurement teams objective parameters for assessing output consistency.
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Durable Cutting and Winding Architecture: Tungsten carbide alloy knives, multi-strip circular shearing, differential-shaft rewinding, and a two-wheel pressure-roller arrangement are configured for repeatable roll handling in continuous operation.
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Complete Material-Handling Scope: The system covers unwind, manual splicing, guided transport, slitting, dust extraction, separate upper and lower rewind, and adjustable edge-trim collection in one coordinated process.
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Practical Commissioning Support: Supplied operating and maintenance documentation supports installation, routine operation, and service planning, while the documented operating sequence provides a clear basis for production setup.
Contact us for a quote or a custom electrode slitting solution matched to your roll format, material system, and required strip configuration.
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