OVERVIEW
Cell Thermal Conductive Gap Filler Pad is a high-performance thermal interface material designed for EV battery packs and energy storage systems. It efficiently transfers heat from battery cells to cooling plates while providing electrical insulation, vibration damping, and conformability to uneven surfaces. The pad effectively reduces hot spots, maintains uniform cell temperature, and enhances overall battery safety and cycle life.
Key Features
High Thermal Conductivity: Rated between 2– 8 W/mK, ensuring rapid heat transfer from battery cells to cooling systems.
Excellent Electrical Insulation: Dielectric strength greater than 5 kV/mm with CTI 600 rating, providing safe operation in high-voltage environments.
Low Silicone Outgassing: Minimizes volatile emissions, protecting sensitive electronic components and optical sensors.
Wide Temperature Stability: Reliable operation from -40°C to 180°C, suitable for harsh automotive and stationary storage conditions.
UL 94 V-0 Flame Retardant: Self-extinguishing material meets international safety standards.
Stable Dielectric Constant: Maintains εr<8εr<8 from 1kHz to 1GHz (ASTM D150), ensuring consistent high-frequency performance.
High Compressibility: Conforms to irregular cell surfaces under low mounting pressure, reducing contact thermal resistance.
Technical Specifications (Typical)
| Parameter | Value |
|---|---|
| Thermal Conductivity | 2 – 4 W/mK |
| Dielectric Strength | >5 kV/mm |
| CTI (Comparative Tracking Index) | 600 |
| Dielectric Constant (@1kHz/1MHz/1GHz) | <8 (ASTM D150) |
| Operating Temperature | -40°C to 180°C |
| Flammability Rating | UL 94 V-0 |
| Outgassing (Silicone Volatiles) | Low |
| Thickness Range | 0.5– 3 mm (customizable up to 5.0 mm) |
| Tolerance | ±0.2 mm |
Applications
EV / HEV Battery Packs – thermal management between prismatic or pouch cells and cold plates
Energy Storage Systems (ESS) – uniform cell temperature distribution
Stationary Battery Banks – long-life thermal interface solution
Power Battery Modules – gap filling for stacked cell configurations
Why Choose This Product?
Proven reliability in automotive and energy storage applications
Custom die‑cut shapes available to match your module layout
Full compliance with RoHS, REACH, and UL standards
Technical datasheet available upon request
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