Why Are Automakers Increasingly Focused on the LongTerm Reliability of Battery Coatings?


In the era of electric vehicles, the battery is the "heart," and the battery coating is its "protective suit." In the past, automakers only cared about how far the battery could take the vehicle, but now they are more concerned about: will this protective suit still work after several years? Lankwitzer has provided an answer with a disruptive technology – UV insulating coating.

Ⅰ. Harsh Environmental Conditions: Salt Spray and Electrolyte Exposure Daily

In China's coastal areas and northern regions where snowmelting agents are used, the salt spray concentration in winter can be 3 times higher than that of seawater. Traditional PET blue films start to rust after 500 hours of salt spray exposure, while Lankwitzer's UV coating shows no peeling even after 1,000 hours of salt spray exposure plus aging tests at 85°C/85% RH. Additionally, it resists electrolyte corrosion and swelling, ensuring the battery pack "remains free of perforations for ten years."

Ⅱ.Aluminum Casings Fear Impact, Circuits Fear Moisture

Once the coating is scratched by chassis impacts, the aluminum alloy oxide film will expand rapidly, leading to a strength reduction of over 30%. Lankwitzer's UV coating has an adhesion strength of >16 MPa with aluminum casings, a dielectric strength of ≥160 kV/mm, and an insulation resistance of >10 GΩ, which can effectively prevent electrochemical corrosion and highvoltage breakdown.

Ⅲ. National Standard Certification for Enhanced Peace of Mind

Lankwitzer's UV coating has passed the certification of the new national standard GB 380312025 and has become the preferred choice for mass production by automakers such as BMW and Volvo.

Ⅳ. One Repair Equals the Cost of Ten Coatings

Globally, annual recalls caused by battery corrosion or water ingress exceed 10 billion yuan. Lankwitzer's UV coating boasts a firstpass yield of >99.5%, with a single cell spraying time of ≤3 seconds. Repairs only require 36 seconds of laser paint stripping, significantly reducing aftersales costs.

Ⅴ. UV Curing Makes "Long Lifespan" No Longer Expensive

 Zero VOC, 100% solid content: Secondlevel curing, no baking required, and can be directly integrated into CTC production lines;

 Precise film thickness control: Robot spraying with an error of ±10 μm, avoiding "waste from excessive thickness and rust from insufficient thickness";

 Green and energysaving: Coating utilization rate is close to 95%, and energy consumption is much lower than that of traditional baking coatings.

Battery coatings have evolved from "the icing on the cake" to "a safety bottom line + a cost red line." Lankwitzer's UV insulating coating proves that whoever can keep this protective suit free from cracking, peeling, and aging for years will make batteries safer, users more assured, and themselves more costeffective.


Go to Top