Effective thermal management is critical for EV battery safety and longevity. As fast charging increases heat density, selecting the right thermal interface materials (TIMs) is essential. IOTA Silicone Oil provides this streamlined guide to help OEMs and PACK manufacturers optimize thermal solutions.
Core Requirements for Battery TIMs
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High Thermal Conductivity: ≥1.0 W/m·K to efficiently dissipate cell heat.
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Wide Temp Range: Stable performance from -40℃ to 150℃.
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High Insulation: Volume resistivity ≥10¹⁴ Ω·cm for high-voltage safety.
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Durability & Processability: Non-hardening for 5-8 years; compatible with automated dispensing or manual application.
IOTA Thermal Management Product Matrix
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IOTA GNJ 3128F (Phenyl Silicone Gel): Withstands 300℃+; non-sagging, high thermal conductivity for module-to-cooling plate filling.
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IOTA LSR 3100G (Addition-Cure Potting Compound): Excellent moisture/insulation protection for overall pack potting and structural support.
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IOTA-201 (High-Viscosity Dimethicone): 50k–1M cSt; stable base oil for formulating thermal greases.
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IOTA-255 (Methylphenyl Silicone Oil): Withstands 250℃–300℃; highly anti-oxidative for extreme heat applications.
Selection & Process Matching
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Gap Filling: Use IOTA GNJ 3128F combined with fillers (Alumina/BN) to achieve 1.5~3.0 W/m·K and reduce contact resistance.
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Application Method: Use low-viscosity oils (IOTA-201 base) for automated dispensing; use thickened greases or pre-cured gels for manual application or complex gaps.
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Long-Term Reliability: Opt for addition-cure systems (IOTA LSR 3100G/GNJ 3128F). They release no byproducts during curing, preventing corrosion on battery terminals and BMS components.
Frequently Asked Questions (FAQ)
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Thermal Grease vs. Gel? Use grease for gaps <0.5mm; use IOTA GNJ 3128F gel for gaps 0.5~5mm due to its excellent thixotropy and anti-sag properties.
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Base Oil Selection? IOTA-201 (50k-100k cSt) is ideal for standard use. Upgrade to IOTA-255 phenyl oil for local temps >150℃ to ensure low volatility.
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Flame Retardancy? Yes, UL94 V-0 rating is recommended. IOTA gels can be formulated with flame-retardant fillers.
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Domestic Material Reliability? Absolutely. IOTA’s core products match international standards in conductivity and aging resistance, with proven mass production at top domestic EV manufacturers.
Technical Support & Sampling
For detailed TDS, formulation guidance, and samples, contact IOTA Silicone Oil via our website (http://www.siliconeoil.net) or Sales Manager Zhang (Phone/WeChat: 18055211309, Email: zyf@siliconeoil.cn).
