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Secondary Battery

Cylindrical

Cylindrical batteries feature standardized structures, excellent productivity, superior heat dissipation, high stability, and cost efficiency, making them ideal for mass production.

INLaser welding systems are deployed in key processes such as tab welding, cap sealing, can joining, and protection device welding in cylindrical battery manufacturing, maximizing cell stability and lifespan through low spatter and low heat-affected zone technology.
Cylindrical

INLaser Systems for Cylindrical Battery Lines

On-The-Fly System

On-The-Fly System

Continuous laser welding of caps, lead tabs, and injection holes even during high-speed transfer to reduce cycle time.

Vision Inspection (AOI) System

Vision Inspection (AOI) System

Automatic optical inspection of welding beads and cap/can surfaces for early defect detection.

Unified Traceability & Connectivity

Unified Traceability & Connectivity

Integration with MES and other systems for cell-level traceability of equipment and quality data.

Key Processes: Cylindrical Battery Lines

Cap Welding

High-speed, high-precision laser welding of cylindrical cell caps to ensure sealing reliability and internal pressure maintenance.

  • On-The-Fly welding for reduced cycle time and uniform quality
  • Vision inspection for automatic detection of bead shape and underfill

Lead Tab Welding

Stable joining of electrode lead tabs and caps/terminals to minimize contact resistance and ensure output and lifespan.

  • Minimized spatter and over-penetration through micro-focus control
  • Process parameter library for various materials and thicknesses

Injection Hole Welding

Laser sealing of injection holes after electrolyte filling to prevent leakage and ensure stable cell performance.

  • Minimized HAZ through micro-spot control
  • Automatic recognition and alignment of injection hole positions with vision guidance

Injection Hole & Can Surface Cleaning

Removal of contamination, oxide film, and burrs from injection hole and can surfaces before welding to ensure stable welding quality and appearance.

  • Dry cleaning with laser without chemicals
  • Reduced defect rate through removal of oil, dust, and coating residues
  • Improved quality of subsequent welding and marking processes

Process Map: Cylindrical Battery Lines

Welding

  • Cap Welding
  • Lead Tab Welding
  • Injection Hole Welding
  • ± Current Collector & JR
  • Other Special Welding Processes

Cleaning

  • Injection Hole & Can Surface Cleaning
  • Other Cleaning Processes

Marking

  • JR PKG Marking
  • Capton Tape Marking
  • Can Surface Marking
  • Electrode Foil Marking

Cutting

  • Capton Tape Cutting
  • Can Body Cutting