The Advantages of Annular Laser Welding Technology
With the rapid growth of the new energy vehicle (NEV) industry, demands for battery performance and safety have significantly increased. In lithium-ion battery pack (PACK) manufacturing, laser welding is widely adopted for its high precision and efficiency. However, traditional laser welding methods had critical limitations—until the breakthrough annular laser beam welding technology was developed.
Challenges with Traditional Laser Welding
× Excessive Heat-Affected Zone (HAZ)
Conventional spot or linear laser beams create uneven energy distribution, leading to larger HAZ, material degradation, and part distortion.
× Inconsistent Weld Quality
When welding multi-layer or varying-thickness materials, standard lasers struggle to maintain uniform penetration and seam stability.
×Low Efficiency in Complex Applications
Adjusting parameters for intricate geometries or high-precision welds is time-consuming, reducing throughput.
The Breakthrough: Annular Laser Welding
Developed around 2015, annular laser welding introduces a revolutionary energy distribution—a ring-shaped beam with lower intensity at the center and higher intensity at the edges. This innovation solves traditional welding pain points with:
✓ Minimized Heat Input & Distortion
The annular beam concentrates heat precisely at the weld zone, reducing HAZ by up to 30% and preventing material warping.
✓ Superior Weld Consistency
Uniform energy distribution ensures stable penetration depth and seam integrity, even on dissimilar or multi-layer materials.
✓ Adaptability for Complex Applications
Ideal for micro-components, busbars, and sensitive battery materials, offering unmatched flexibility and control.
✓Higher Production Efficiency
Simplified parameter setup and faster processing speeds boost output without compromising quality.
YaoLaser’s Advanced
Welding Solutions
At YaoLaser, we recognize that high-reliability welding is critical for battery safety and performance. That’s why our laser welding systems come standard with annular beam technology, enabling:
✔ Industry-leading precision for lab-scale R&D or mass production
✔ Seamless integration into
automated battery assembly lines
✔ Lower operational costs with reduced rework and higher yield
Upgrade your production with YaoLaser—where innovation meets reliability.
