Battery Laser Cleaning Machine

Laser cleaning is a fundamentally innovative process that uses fiber lasers to remove rust, oxides, paint, and other coatings from metal surfaces in a completely non-contact manner. Its greatest advantage is that it does not alter the material's properties. Laser cleaning requires no chemicals or consumables, making it more environmentally friendly and ecologically sound than traditional cleaning processes using acids, solvents, or mechanical abrasion (such as sandblasting). Laser cleaning is also increasingly used as a pretreatment for surface functionalization, preparing surfaces for subsequent manufacturing steps. This is also true in battery production, which aims to reduce the world's dependence on fossil fuels.

The battery industry has benefited significantly from modern laser technology. For example, in the production of lithium-ion batteries for electric vehicles and energy storage systems, lasers can reduce cost pressures and accelerate product cycles. A coordinated laser system consisting of a laser and a laser deflection unit achieves unparalleled high-quality results, even during the cleaning process. Laser systems operate highly dynamically, even in confined spaces, with fully automatic repeatability and absolute precision.

• Laser cleaning of surfaces in battery production

Battery manufacturing requires numerous welded and bonded joints that are critical to the functionality of the product. Adhesives, sealants, pastes, potting compounds, gap fillers and encapsulants are used to provide thermal, structural, sealing and damping properties to the battery. Removing impurities before bonding or treating the battery improves the chemical properties that hold the parts together and determines the conductivity of the contacts, improving battery life. With the latest structural battery technologies, good surface connections are especially important. This is because here the quality of the mechanical connection affects the vehicle strength and thus the overall safety of the vehicle.

• Perfect cleaning of electrical contacts

The technical requirements for battery production are enormous at every step of production. Battery modules have hundreds to thousands of poles that must be cleaned before welding, so even a 1% deviation can lead to massive recalls. And those are expensive and reputationally damaging! In the laser welding industry, 6 sigma precision is simply no longer enough, it requires 7 sigma: 0.019 defects per million welds. Laser cleaning provides the precision needed here to ensure consistent cleaning results and avoid quality problems. „For example, the contacts of pouch cells are cleaned without contact at unsurpassed speed, ensuring pure current connections between dissimilar metals such as copper and aluminum without the disturbing influence of foreign particles such as paint, epoxy, oil," explains Frédéric Faity, Technical Sales Manager at RAYLASE of the complex production process. With its precision and speed, the fully automated contactless laser removal process of contaminants on battery busbars and battery submodules is simply unsurpassed in its quality.

• Oxide removal on battery cells

When flammable substances react with oxygen, oxides are formed. In battery production, these are usually metal oxides that can impede the flow of current. They must be removed before welding or joining processes. Laser oxide removal is a good choice here. It can remove oxides in a very gentle way without contaminating the base metal underneath. With the micrometer precision of the laser, oxides can be cleaned in controlled layers and from predefined areas. 

Shandong Qiangyuan Laser Of Sdiit Ltd. (SDQY Laser), established in June 2021 and headquartered in the Liaocheng High-tech Zone in Shandong Province, is a national high-tech enterprise specializing in the research and development, production, sales, and comprehensive solutions of laser cleaning and welding equipment.

Main Business: Focusing on laser cleaning, the company offers over 30 products, including continuous laser cleaning machines (1500W-6000W), pulsed laser cleaning machines (50W-1000W), and mobile cleaning platforms.

Technological Breakthroughs: SDQY Laser holds over 50 domestic and international patents, filling numerous technological gaps in China.

R&D Background: Led by the Laser Research Institute of the Shandong Academy of Sciences, the company's R&D team includes PhDs in various disciplines, including optics, mechanics, and materials science.

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