G10 Epoxy Sheets in EV Battery Pack Insulation Systems

Core Applications of G10 Epoxy Sheets in EV Battery Pack Insulation Systems In the Power Battery System (Pack) of Ne...

Core Applications of G10 Epoxy Sheets in EV Battery Pack Insulation Systems

In the Power Battery System (Pack) of New Energy Vehicles (EVs), G10 Epoxy Sheets have evolved from simple insulation gaskets into core materials that ensure battery safety and structural integrity. As battery systems migrate toward 800V high-voltage architectures, the importance of G10 has become even more prominent.

1. Inter-module Insulation Spacers

• Specific Use: Placed between battery modules or between modules and the metal casing.
• Core Value: In extremely compact battery pack spaces, G10 prevents high-voltage breakdown with its superior dielectric strength (typically >40kV/mm). Its low water absorption (~0.1%) ensures that insulation performance does not degrade in humid environments.

2. Busbar Supports and Fixation Brackets

• Specific Use: Physical fixation base for high-voltage copper or aluminum busbars.
• Core Value: G10 offers excellent creep resistance. With modified CTI (Comparative Tracking Index) reaching 600V, it effectively reduces safe creepage distances in high-voltage architectures.

3. Battery Cluster End Plates and Side Plates

• Specific Use: Structural support at the ends of battery clusters.
• Core Value: G10 achieves significant lightweighting (density is only 1/4 that of steel). In the event of a collision, the glass-fiber reinforced structure protects cells from physical compression.

4. MSD and PDU Internal Liners

• Specific Use: Base for Manual Service Disconnects or insulation barriers inside PDUs.
• Core Value: G10 possesses outstanding arc resistance and flame retardancy (complying with UL 94 V-0), preventing fire hazards during circuit switching

Technical Specifications: G10 vs. Standard Plastics