Laser marking helps lithium battery traceability - 355nm UV nanosecond laser

Lithium battery from batching to pole piece cutting to complete packaging and delivery, the whole process involves many processes, in so many processes, how to realize lithium battery from raw materials, production process and technology, product batch, date and other complex information What about traceability?

Laser marking, yes!

Laser marking uses a high-energy-density laser to irradiate the surface of the battery package, and exposes the deep material through the evaporation of the surface material, thereby engraving high-quality graphic information containing production information, batch number and other information. Compared with inkjet printing, laser marking has high consistency of graphic information, high quality, no consumables, energy saving and environmental protection. It is a permanent mark, even if it is a complex two-dimensional code graphic. It can easily realize the traceability of products and help lithium battery manufacturers to improve quality and efficiency.

Therefore, choosing a suitable laser to achieve high-resolution, high-definition laser marking becomes the key point. With the characteristics of high single-photon energy, small spot diameter and high material absorption rate, the processing efficiency can be greatly improved by integrating the RFH 355nm ultraviolet nanosecond solid-state laser in the lithium battery production line.

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Marking with RFH 355nm UV nanosecond laser belongs to cold processing, which is especially suitable for ultra-fine processing scenarios. It has excellent beam quality (M2<1.2), and the diameter of the focused spot is less than 20 microns, which is very suitable for fine and clear marking in a small area. information or complex graphics such as two-dimensional codes; very small pulse width, about 20ns, the heat-affected zone is very small during marking, which can greatly reduce the mechanical deformation of the material, and the marking is clear and firm , better than ink coding and pure; in addition, most materials have a generally high absorption rate of ultraviolet laser, whether it is aluminum, aluminum alloy, stainless steel and other metals, alloy surfaces or plastic packaging can be "take all", the marked Works well.

In addition, laser marking belongs to non-contact processing, which does not generate internal stress and deformation, which not only ensures the original accuracy of the workpiece, but also does not cause corrosion, wear, poison and pollution to the surface layer, which greatly improves the processing efficiency. And through the integration of optical components and motion components, it can be marked on the surface of any regular or irregular object, and the surface of cylindrical lithium batteries is also competent.