The rapid transition toward 800V high-voltage architectures in the Electric Vehicle (EV) industry has placed unprecedented demands on motor insulation systems. Historically, motor slot insulation relied heavily on flexible laminates like NMN (Nomex-Mylar-Nomex) or DMD. However, as power density increases, the limitations of these composite materials are becoming apparent.
The Rise of Monolithic 600μm PET Film Yuxing’s 600μm specialized BoPET film offers a disruptive alternative to traditional laminates. The primary technical advantage is its monolithic structure. Unlike laminates that utilize adhesives to bond different layers, Yuxing’s thick PET film eliminates the risk of delamination—a critical failure mode caused by high-frequency vibrations and thermal cycling in EV motors.
Key Technical Advantages:
Superior Dielectric Integrity: With a thickness reaching 600μm, the film provides a robust dielectric barrier capable of withstanding high partial discharge inception voltages (PDIV).
Mechanical Resilience: It features high tensile strength and puncture resistance, essential for surviving the mechanical stress of automated high-speed needle-winding processes.
Thermal Management: PET has a higher inherent thermal conductivity compared to the air-pockets often trapped within multi-layer laminates, facilitating better heat dissipation from the copper windings.
By switching to Yuxing’s 600μm film, EV manufacturers can simplify their supply chain, reduce component thickness, and significantly improve the long-term reliability of the propulsion system.