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The new energy vehicle industry is developing rapidly, and power battery systems have increased demands for safety and reliability, posing challenges to battery insulation coating processes. UV coating has emerged as a new trend due to its rapid curing, strong adhesion, and high insulation properties, but it has high requirements for the surface roughness of battery cases. Laser technology supports the UV coating process with its precise control capabilities. GZTECH has introduced 1000W pulsed lasers, including single-mode and multi-mode solutions, suitable for different battery cases. Laser texturing technology is becoming a new trend, and GZTECH will continue to invest in research and development to provide more efficient and precise products and services for the new energy battery industry.
GZTECH Battery Shell Texturing Case Sharing丨Driving Technological Innovation and Upgrading in the New Energy Sector
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Author: Site Editor
Publish Time: 2025-04-14
Origin: Site
In recent years, the new energy vehicle industry has witnessed rapid development, with power battery systems continuously undergoing upgrades and innovations toward lightweight and high-voltage directions. As technology advances and battery energy density increases alongside system voltage elevation, the demands for battery safety and reliability have grown ever higher. Against this backdrop, battery insulation coating processes, a critical link in ensuring safe battery operation, face heightened technical challenges. Leveraging its efficiency, precision, and flexibility, laser technology is playing an increasingly vital role in battery insulation coating processes.
I. Limitations of Current Traditional Battery Coating Processes
At present, the mainstream insulation solutions for battery cells can be roughly categorized into four types: PET insulation film, powder coating, epoxy coating, and UV insulation coating. The PET film, in its thin-film form, exhibits weak adhesion to the battery casing, making it prone to detachment under complex operating conditions and thereby reducing battery safety. Although the epoxy coating process partially addresses the issue of inadequate adhesion in PET films, its lengthy curing time adversely affects production efficiency. Powder spraying is also employed in certain situations, but it is difficult to control its uniformity and poses significant safety hazards. Additionally, powder spraying has a certain environmental impact, which does not align with the environmental protection requirements of modern manufacturing. Consequently, the UV coating process, with its advantages of rapid curing, strong adhesion, and high insulation, is gradually emerging as a new trend in battery insulation coating.
II. Exploration of the Battery Shell Texturing Process
The UV coating process imposes extremely high requirements on the surface roughness (Ra value) of battery cases. Precise control of surface roughness is the key to ensuring coating adhesion, insulation performance, aging resistance, and improving the efficiency of the UV coating process. In this field, laser technology, with its excellent precision control capability, provides strong support for the optimization and upgrading of the UV coating process.
Laser texturing is a process that utilizes high-energy pulsed lasers to form micron-scale rough structures on the surface of battery cases. When the laser irradiates the material surface, the material absorbs laser energy, causing partial vaporization of the material and resulting in the formation of minute concave-convex structures on the surface. The effectiveness of laser texturing technology is influenced by various parameters, including laser average power and peak power, pulse frequency, pulse width, galvanometer scanning speed, spot shape, etc. During application, precise adjustment of the Ra value can be achieved by controlling these influencing factors to meet the requirements of different coating materials.
1. Impact of average power on Ra: When the peak power remains constant, as the average power increases, the Ra value also increases accordingly.
2. Impact of overlap rate on Ra: When the average power is kept constant, a higher overlap rate leads to a larger Ra value.
3. The influence of laser process parameters on texturing Ra value
III. GZTECH Battery Shell Texturing Solution
GZTECH specializes in the research and development, production, and sales of advanced fiber lasers. In response to the material characteristics and process requirements of battery shells, we have launched 1000W pulse lasers in various types, offering both single-mode (GM) and multi-mode (GMC) laser solutions to meet the diverse production needs of battery shell texturing.
1. GZTECH GM Single mode Laser Texturing Solution
Model recommendation : YFPN-1000-GM
Solution advantages: Circular spot single-mode laser, with a large processing format and a wide controllable range of roughness. The adjustable range of Ra is 0.1~3μm.
YFPN-1000-GM sampling effect presentation:
2. GZTECH GMC Multi-mode Laser Texturing Solution
Model recommendation: YFPN-1000-GMC-H5、YFPN-1500-GMC-H15、YFPN-1000-GMC-H50
Solution advantages: High power output, with a relatively large focused spot size, high efficiency, and the maximum efficiency can reach over 9000 mm²/s. It supports full automation integration, has a wide range of applications, and meets the requirements of battery shells with different materials and thicknesses. YFPN-1000-GMC-H50 square-spot laser, specially customized for battery texturing, can be used in conjunction with galvanometer for flight sampling, significantly improving processing efficiency.
YFPN-1000-GMC-H5 sampling effect presentation:
YFPN-1500-GMC-H15 sampling effect presentation:
YFPN-1500-GMC-H50 sampling effect presentation:
Presentation of texturing solution effects
Laser texturing technology is gradually becoming a new trend in battery shell surface treatment. Relying on its profound accumulation in the field of laser technology, GZTECH has launched a series of laser texturing solutions suitable for battery shell surface treatment, providing efficient, precise, and stable innovative choices for the new energy battery industry. GZTECH will continue to increase investment in research and development, optimize laser performance, and develop more lasers suitable for the new energy sector, offering customers higher-quality products and services.
Promote laser to be a fundamental tool for smart manufacturing
