Cylindrical Lithium Battery Pack Nickel Coil Strip Busbar Cutting Machine China

Nickel Strip Cutting Machine

Nickel strip cutting machine is widely used in cylindrical tricycle scooter electric tools lithium‑ion battery PACK and energy‑storage battery pack manufacturing. It cuts coiled nickel strip, nickel‑plated steel strip and nickel‑copper composite strip into required‑size nickel tabs. It is also compatible with copper strip and aluminum strip. Key performance requirements include low burr on cutting edge and high dimensional accuracy, to prevent metal burrs from piercing cell separators.

Main Types

1. Desktop CNC Cutting Machine (Laboratory & Small‑batch PACK Production)

·         Applicable material thickness: 0.05‑0.3 mm; max width ≤100 mm, for 18650 / 21700 battery connecting tabs

·         Driving mode: stepper‑motor feeding, guillotine‑type shearing

·         Cutting accuracy: ±0.05~±0.1 mm; cutting speed: 0‑130 cuts per minute

·         Functions: touch‑screen setting for length, quantity and speed; batch counting; material‑lack alarm stop; optional optical sensor positioning for pre‑punched nickel strips

·         Power supply: AC220V; power consumption ~200W; net weight ~30 kg

2. Full‑automatic Heavy‑duty Nickel Strip Cutter (Mass‑production Line)

·         Equipped with automatic decoiler, tension control and web correction, connectable to assembly line

·         Max working width: 300‑500 mm, for energy‑storage module busbar strips

·         Optional functions: waste removal, CCD visual inspection, defective‑part rejection, multi‑strip simultaneous cutting

·         Blade type: flat shear blade / die‑cutting mould; cemented carbide blades for minimal burr

3. Laser Cutting (High‑end tab & ultra‑thin nickel foil)

·         Advantage: nearly zero mechanical burr

·         Disadvantage: metal spatter residue generated; dust‑removal system required; high equipment investment

Important note: Nickel material features high toughness. Ordinary blades easily chip and produce heavy burrs. High‑speed‑steel or cemented‑carbide blades are mandatory. Blade clearance adjustment is critical. Excessive burrs may cause battery short‑circuit risk.

Typical Technical Specifications (Reference Model: BK‑NC‑100 / BK‑CTD100)

Selection Guidelines for Energy‑storage & PACK Production Line

1.    Material thickness: For strips thicker than 0.25 mm, select high‑shear‑force model; avoid foil wrinkling for ultra‑thin nickel foil.

2.    Burr control: For energy‑storage battery modules, burr height shall be less than 20 μm to avoid safety hazard; cemented‑carbide blades are preferred.

3.    Pre‑punched nickel strip: Machine with optical fiber sensor is required to eliminate accumulated position error.

4.    Small‑batch sampling: Desktop CNC unit is sufficient. For mass production, adopt automatic decoiler plus tension control to prevent material offset.

5.    EU export: Confirm CE certification for overseas factory deployment.

Main Domestic Equipment Manufacturers

·         BLUEKEY, Lab‑scale & mid‑size PACK equipment, heavy export volume

·         Bluekey: General metal strip cutter with cost‑effective solution

·         Bluekey: Large‑scale lithium‑battery turn‑key line, pole‑piece / nickel‑strip die‑cutting & laser cutting for large‑scale projects

Common Troubleshooting

1.    Heavy burr on cutting edge: Dull blade, excessive blade clearance, improper blade material. Readjust clearance or replace cemented‑carbide blade.

2.    Unstable cutting length: Feeding roller slip or unstable material tension. Enable optical positioning for pre‑punched strips.

3.    Bent & deformed nickel tabs: Excessive pressure of feeding roller. Reduce roller pressure.