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What Parameters Matter Most in a Lithium Battery Laser Welding Machine?
szhaiwei
2025-11-01
When evaluating a lithium battery laser welding machine, buyers often focus on laser power. While important, it’s only one part of the picture. Several key parameters work together to determine weld quality, consistency, and process reliability—especially in high-precision battery manufacturing.
Laser Power and Its Application Range
Power, measured in watts (W), typically ranges from 100W to 6000W for lithium battery applications. However, the right power depends on material and thickness. For thin copper or aluminum tabs (0.1–1.0mm), 1000–1500W is often sufficient. Higher power isn’t always better—it must be matched with other settings to avoid excessive heat input.
Pulse Frequency and Overlap Control
Pulse frequency (Hz) determines how many pulses are delivered per second. In pulsed welding, this affects weld continuity. A frequency that’s too low may result in intermittent fusion; too high can cause overheating if not balanced with speed. For stable results, 200–400Hz is commonly used in lithium battery laser welding machine systems.
Beam Quality (M²) and Focusability
A lower M² value means a tighter, more concentrated beam. High beam quality allows for smaller spot sizes and deeper penetration with less power. This is critical when welding narrow joints or heat-sensitive materials without damaging nearby components.
Pulse Shape and Duration
Adjustable pulse profiles—such as peak power ramping or flat-top pulses—help control spatter and stabilize the melt pool. Short pulse durations reduce thermal stress, making them ideal for sealing battery cases or welding dissimilar metals.
Welding Speed and Path Accuracy
Speed (mm/s) must be synchronized with laser output. Faster speeds reduce heat buildup but require precise motion control. The integration of the lithium battery laser welding machine with high-accuracy stages or robotic arms ensures consistent seam tracking and repeatability.
Focus Position and Spot Size
The focal point’s position relative to the workpiece affects penetration and weld width. A typical spot size of 0.2–0.6mm is used, depending on lens and application.
Understanding these parameters—and how they interact—helps users choose a lithium battery laser welding machine that delivers reliable, high-quality results in real-world production environments.
For a reliable and cost-effective solution, consider Haiwei Laser’s lithium battery laser welding machine—designed for stable, trouble-free operation in demanding production environments.
REPORT