With the rapid development of the new energy vehicle industry, the reliability requirements for its core electronic components have reached unprecedented heights. Complex circuit systems need to operateably in harsh environments with high voltage, drastic temperature changes, humidity, and vibration. Therefore, "conformal coating" (waterproof, salt-fog proof, dustproof, which provides superior protection, has become an indispensable key material. Ancham® AS35(50) conformal coating launched by Yaskawa New Materials, with its technical characteristics, is becoming an ideal choice for protecting the electronic systems of new energy vehicles.
Ancham AS35(50) Silicone Conformal Coating: The "Invisible Armor" for Electronic Systems
Conformal is a special coating applied to printed circuit boards (PCBs) that forms a thin, transparent protective film. This "invisible armor" is primarily used to isolate moisture, dust and chemical contaminants, and can also relieve mechanical vibrations and stress shocks, significantly improving the stability of electronic components and extending their service life. Among various conformal coatings, resin, with its unique molecular structure, exhibits excellent low-temperature flexibility and high-temperature stability. Its low modulus characteristic can effectively absorb stress, avoiding damage to precision components due to expansion and contraction, making it particularly suitable for applications in complex and changing environments.
Ancham New Material Ancham AS35(50): Technological characteristics lead the industry standard
Ancham® AS35(50) a one-component organic silicone tri-proof paint with 100% solid content. The solvent-free formula makes it more advantageous in terms of environmental protection and construction safety This product has the characteristics of low viscosity and easy flow, suitable for efficient construction processes such as spraying or flow coating, and can achieve thick coating and easy degassing, with smooth surface without bubbles after curing, ensuring the uniformity and integrity of the protective layer.
Ancham AS35(50) stands out for its exceptional technical performance:
• Outstanding electrical insulation: With insulation strength ≥0 kV/mm and a volume resistivity of up to 7.0x10¹³ Ω.cm, it provides a robust insulation barrier for high-voltage circuits in new energy vehicles.
• Broad temperature resistance: The operating temperature range of -50°C to 200°C ensures it can handle the thermal management range battery packs during charging and discharging, the heat generated by motor controllers, and extreme conditions such as severe cold in the north.
• Fire retardant safety: Compliant UL94-V0 flammability standards, it can effectively prevent the spread of flames in the event of an electrical fault, buying valuable time for passenger safety.
• adhesion and flexibility: With a scratch adhesion grade of 0 and a Shore A hardness of 30±5, it ensures that the protective film remains firmly attached to substrate under various stresses, without curling or cracking.
Main application scenarios of Ancham AS35(50):
1. Battery Management System (BMS): The BMS main control board is responsible for monitoring the battery status, and its directly affects the safety of the entire vehicle. The excellent electrical insulation of AS35(50) prevents high-voltage creeping, and its wide temperature resistance ensures stable performance the drastic temperature changes inside the battery pack. The V0-level flame retardancy provides crucial passive safety for the battery pack.
2. Onboard Charger (O) and DC-DC Converter: These components contain high-voltage and high-current circuits. The high insulation strength and high volume resistivity of AS35(50) effectively isolate high voltage and prevent short circuit failure. Its excellent base material wetting property can fully cover complex PCB boards with different height components, leaving no gaps.
3. Controller and Inverter: As the core power unit driving the vehicle, the IGBT modules and other power devices inside generate a large amount of heat during operation. The high-temperature (200°C for long-term) and low-stress characteristics of AS35(50) can handle the heat generated by the power module and the cold hot cycles, protecting the welding points and leads.
4. Various Sensors and Control Units: Sensors and ECU units spread throughout the vehicle also need protection. The goodhesion of AS35(50) to porous substrates and its moisture and chemical corrosion resistance can effectively resist the erosion of splashed water from the chassis, salt mist, and oil, enhancing the environmental adaptability of the entire vehicle.
With its comprehensive technical advantages, Ancham® AS35(50) silicone conformal coating provides a one- high-reliability protection solution for the electronic system of new energy vehicles. It not only meets the industry's stringent requirements for material performance but also its easy application and fasturing characteristics align with the pursuit of efficiency in modern production. As new energy vehicles develop towards higher voltage and smarter, Ancham will continue to focus on the research and development of innovative, injecting strong impetus into the robust development of the industry chain.
