MotorWeld-BL500: Blue Laser Welding for Copper Busbars & EV Motor Terminals

The MotorWeld-BL500 leverages 500W of blue laser power (450nm) — the wavelength at which copper absorbs laser energy most efficiently (>65%) — for precision welding of copper busbars, motor terminals, and power electronics interconnects. It delivers the cleanest possible copper welds with minimal heat input and zero spatter.

Key Features

• 500W blue laser (450nm) — >65% absorption on copper, highest of any commercial laser wavelength
• Conduction mode welding: no keyhole, no spatter, ideal for thin copper foils and terminals
• Spot size: 50–200μm adjustable for fine-pitch terminal welding
• Galvo scanner: 200×200mm field for flexible weld pattern programming
• Integrated pyrometer: real-time weld temperature monitoring
• Nitrogen purge: prevents copper oxidation during welding

Technical Specifications

Applications

EV motor terminal-to-busbar connections, power module copper clip bonding, battery cell tab welding (copper foil), inverter busbar joints, and DC-DC converter copper interconnects.

Blue vs. Green vs. IR for Copper Welding

Blue (450nm) offers the highest copper absorption (>65%), making it ideal for thin-section conduction welding where heat input must be minimized. Green (532nm) provides ~40% absorption and is better suited for deeper keyhole welds in hairpin applications. IR (1070nm) should be avoided for bare copper due to <5% absorption and severe spatter. The BL500 is the right choice when weld resistance, cosmetic appearance, and minimal HAZ are the primary requirements.