Battery Management Systems (BMS) are critical components of electric vehicles (EVs), responsible for monitoring battery cell voltage, temperature, and state of charge, as well as ensuring safe and efficient battery operation. BMS enclosures must meet strict requirements for heat resistance, flame retardancy, insulation, and hermetic sealing to protect internal circuits from humidity, coolant exposure, and mechanical impact. Traditional assembly methods often struggle to balance these requirements—adhesives may degrade under high temperatures, while ultrasonic welding may not provide sufficient sealing or structural strength. DaokeDao plastic laser welding provides a stable, reliable joining solution for high-performance engineering plastics commonly used in BMS enclosures, including PA66-GF, PC/ABS, and flame-retardant PP. The non-contact process eliminates mechanical stress, preventing damage to internal sensors and circuits. It achieves a hermetic seal that meets IP67 standards, effectively blocking moisture and coolant intrusion. With precise energy control, the laser welding process avoids material degradation, ensuring long-term structural stability even under extreme temperature cycles (-40°C to 150°C) and vibration. Our laser systems are designed to integrate seamlessly into automated EV battery assembly lines, supporting high-volume production with consistent quality. They comply with strict automotive standards such as IATF 16949 and IEC 62133, helping new energy vehicle manufacturers improve the safety, reliability, and service life of battery packs.
