Advanced Picosecond Laser Black Marking For Power Battery Aluminum

On new energy power battery production lines, every cell can be traced back to its origin, all thanks to a small QR code that carries traceability information throughout the entire process, from raw materials, manufacturing, and assembly to delivery and after-sales service. Efficiently marked and clearly labeled QR codes have become a crucial data interface for intelligent manufacturing.

Power battery casings are generally made of pure aluminum. Initially, the method of using Q-switched lasers to create white codes had issues with unstable recognition. Later, the method of using MOPA lasers to create gray codes had problems such as the inability to modify codes due to their depth. High efficiency, repairability, and high recognizability have become the new pursuit for cell marking.

I. Breakthrough: GZTECH YFPP-100-P10 Fiber Picosecond Laser Black Marking Solution

Addressing this challenge, GZTECH has launched the YFPP-100-P10 fiber picosecond laser based on nine-cavity mode-locking technology. Specifically designed for marking QR codes on the aluminum casings of power batteries, it delivers a faster, more accurate, and more stable marking experience.

YFPP-100-P10

| Beam quality M² < 1.4

| Minimum pulse width < 20 ps, compatible with 2~500ns

| Maximum peak power 200kW

| Air cooling, compact design, universal control interface

With its ultra-short pulse width and high peak power, the YFPP-100-P10 can complete a set of QR codes (white background, black code) in 1.48 seconds, achieving a stable A-level scanning rating. The surface is tactile, and the codes can be erased and reprinted, marking it highly compatible with high-speed automated production lines. This solution has been successfully applied to several leading battery companies and is operating stably under high-cycle and high-reliability requirements, receiving widespread praise.

II. Why Choose Picosecond Lasers? Four Reasons Customers Share Their Views

1. Clearer Coding, Easier Scanning

Ultra-short pulse width and high peak power output results in high contrast and sharp edges in the black area, with a complete and stable code structure. It can be quickly recognized by conventional barcode scanners, easily achieving A-level scanning rating.

2. Seamless Coding, Supports Erasure and Re-marking

Picosecond lasers have minimal thermal impact, causing no damage to the substrate or leaving dents. The QR code area is tactile. If information needs to be changed, it can be erased and re-marked, greatly improving coding flexibility and yield.

3.  Faster Marking, More Stable Production Lines

In actual testing with a "10*7 plain text + DM code" format, a white background with black code can be completed in just 1.48 seconds. Compared to traditional nanosecond lasers (approximately 6 seconds), efficiency is improved by over 50%, significantly shortening the processing time per piece and increasing overall line capacity.

4. Highly compatible with large processing area

Supports wide-range pulse width adjustment (2~500 ns), combined with excellent beam quality, it can maintain consistent code patterns, uniform grayscale, and stable levels even in large-format, multi-code-position processing scenarios, making it highly adaptable to various automated production line systems.

III. Real-world test data verification: Fast and stable, A-level scanning rating

The YFPP-100-P10 laser achieves ideal speed and effect balance in blackening aluminum shell surfaces through optimized waveform and parameter combinations. Below are some typical real-world test data:

Effect photos

Actual test results clearly show that even under high-speed marking, the YFPP-100-P10 can still maintain the QR code A-level scanning rating, with no tactile feedback, no burrs, and no burnt edges in the marking area, fully guaranteeing processing quality.

Leveraging its extensive database of anti-piracy techniques and industry experience, GZTECH can provide customized laser processing solutions tailored to customer needs, achieving optimal results and efficiency.

For more process solutions and sample testing, please contact us!

We will provide you with reliable and efficient traceability and identification solutions using highly stable picosecond lasers and comprehensive technical services.

GZTECH, adding a "laser key" to intelligent manufacturing.