Laser processing in the new energy vehicle manufacturing field of a large number of applications, due to the flexibility, high processing accuracy, high speed and good quality of processing and other factors, in many manufacturing processes show superior cost-effective.
The 60-100 watt and 100-400 watt CO₂ lasers with scanning mirrors have shown stable and excellent processing results in the manufacturing of automotive batteries, parts and interiors, such as marking and engraving, cutting of various film airbag displays, surface treatment, cleaning, scribing, drilling, welding and so on, the following look at a few practical examples of applications.
Laser marking
Laser marking can be used on almost all materials and all kinds of irregular surfaces, and is extremely flexible, able to cope with diversified and complex needs. The high quality and durability of laser marking is an excellent choice for automotive parts and electronic products, which require high quality and durability.
Hairpin Stripping
The insulating materials commonly used in hairpins, including organic composites such as polyamide (PA), polyether (PE) and polyimide (PI), absorb well at the longer wavelengths within the far-infrared spectrum, so we believe that CO₂ lasers are the optimal solution for removing residues from the surface of flat copper wire. Furthermore, CO₂ lasers effectively remove the insulation without damaging the substrate and are very cost-effective, making them an excellent choice for flat wire cleaning, which is now widely used.
Interior Cutting/Processing
In a variety of processes such as cutting applications for interior fabrics, laser processing offers outstanding advantages in terms of cut quality, no burrs, no damage to the material, and superior machining and repeatability compared to conventional processes. In addition, laser processing can also be a variety of leather, fabric, synthetic materials, car trim microporous perforation, scribing and so on.
Metal Foil Structuring Processing
Through laser ablation and other processes, 3D microstructures are formed on metal foils to enable better adhesion of active materials, thereby extending battery life.
Active Material Processing
Creating diffusion pores in electrodes to optimize the electrochemical performance of the electrodes and reduce the loss of active material, Novanta's vibrators and motors allow for the formation of fast, efficient pore patterns with micrometer-level accuracy.
Pole Piece Cutting
Laser cutting is gradually replacing mechanical slitting in the cutting process of electrode sheets. Laser pole piece cutting not only achieves high precision, but is also easy and efficient to operate, and allows changes to be made to the pattern and geometry at any time.
Laser Contact Processing
Laser Contact Processing is the process of welding multiple layers of film together to form electrical components, with a wide range of wavelength options that can be adapted to a variety of laser source types, while ensuring high integrity welds.
Laser Cleaning
Laser cleaning removes dust, oxides or other coatings that may affect bonding quality, helping to improve the surface quality of the cell and enhance conductivity, among other things. Laser cleaning has become the preferred method of pole cleaning because it is green, efficient and causes little damage to the foil.
Laser Seal/PACK Welding
There are a large number of welding applications for single cells and battery modules, where high quality and sealing of copper, aluminum and alloy materials is required. In the final processing step, the batteries are assembled together, and for this purpose, the batteries are laser welded to the busbar, which allows flexible welding of different materials and positions.
