Current Collecting Plate Of Cylindrical Cells Laser Welding Machine By Hanwei AMB

Reduced Heat-Affected Zone (HAZ): Short-wavelength lasers (e.g., 450nm blue or 1,064nm infrared) minimize heat diffusion. For copper collectors (absorption rate <5% at 1,064nm), single-mode annular beam lasers achieve 65% absorption, lowering power requirements by 84% and preventing foil perforation

Insulating Layers: Some designs integrate thermally conductive silicone beneath the collector to dissipate heat and isolate the separator

• Turret Flying Welding: Rotating turrets combined with galvanometers enable dynamic "flight welding" at speeds >300mm/s. Self-developed algorithms (e.g., high-precision dynamic compensation) correct trajectory deviations during rotation, maintaining ±0.05mm accuracy at 100°/s
• Multi-Track Processing: Oscillation patterns (e.g., "sin wave") increase weld seam density without re-melting defects, cutting total welding time to 1.02s per collector

• Single-Mode Annular Beams: These lasers feature independently adjustable core/ring beams (millisecond switching) for dual functions:
  • Core beam: Deep penetration (depth-to-width ratio >1:10) for thick copper collectors.
  • Ring beam: Preheating/surface treatment to reduce splatter
• Power-Speed Synchronization: Algorithms like "4+1 motion-energy interpolation" synchronize laser power with velocity variations, especially at corners (R <5mm), eliminating voids or uneven seams

• Louvered Collector Design: Collectors with through-holes allow electrode tabs to pass through and bend into an "L-shape" atop the disc. This positions the welding zone abovethe collector, reducing laser penetration depth by 60% and intercepting metal debris
• Reinforced Ribs: Radial or circular ribs resist deformation during casing insertion, maintaining weld-zone flatness