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Next-Gen E-Mobility TIM Solutions

Thermal Grease For EV Power Battery Module Thermal Management

Engineered with low thermal impedance, extreme pump-out resistance, and high dielectric reliability to ensure peak thermal dissipation across high-voltage EV battery modules, BMS controllers, and powertrain electronics.

Market Dynamics & Engineering Challenges

The Critical Role of Thermal Grease in Modern EV Battery Systems

As electric vehicle platforms transition from 400V to 800V fast-charging architectures, battery modules generate localized heat fluxes exceeding historical thresholds. Thermal interface grease stands as the frontline defense against thermal runaway and efficiency degradation.

Thermal Bottlenecks in High-Density EV Battery Packs

Modern lithium-ion battery modules (utilizing NCM, NCA, and LFP chemistries) require a tight operating temperature window, typically between 15°C and 35°C. Operating beyond 45°C drastically accelerates capacity degradation, shortens cycle life, and increases the catastrophic risk of localized thermal runaway. With the continuous increase in volumetric energy density—driven by Cell-to-Pack (CTP), Cell-to-Chassis (CTC), and blade battery form factors—interfacial heat management has transitioned from a passive design consideration into an active powertrain engineering priority.

Microscopic surface roughness between metal liquid cooling plates (extruded aluminum cold plates) and battery casing surfaces creates air voids. Because static air possesses an extremely low thermal conductivity of roughly 0.026 W/m·K, these microscopic air pockets act as severe thermal insulators. High-performance automotive-grade thermal grease displaces all interstitial air, creating a seamless, uninterrupted conduction bridge with thermal conductivities reaching from 3.0 W/m·K up to 8.0 W/m·K.

  • Zero Interfacial Contact Resistance: Thixotropic paste consistency flows under low assembly pressure to achieve ultra-thin bond lines (
  • High Thermal Transmittance: Eliminates microscopic thermal bottlenecks at cell-to-chassis and cell-to-cold-plate junctions.
  • Broad Operating Temperature Envelope: Stable performance ranging from -50°C to +200°C without phase separation or hardening.

Technical Performance Benchmark Matrix

Automotive thermal engineers require stringent validation metrics before qualifying thermal paste into Tier-1 EV supply chains. Songxi's advanced thermal greases conform to the highest automotive standards:

Thermal Conductivity
3.5 - 8.0 W/m·K (ASTM D5470)
Thermal Impedance
< 0.04 °C·in²/W @ 50 psi
Dielectric Breakdown
> 10 kV/mm (ASTM D149)
Volume Resistivity
> 1.0 × 10¹⁴ Ω·cm
Flame Retardant Class
UL 94 V-0 Certified
Low Outgassing / Siloxane
D4-D10 < 100 ppm / Low VOC
Formulation Engineering

Solving the "Pump-Out" and "Dry-Out" Challenges in Automotive Environments

Electric vehicle power battery modules experience extreme dynamic vibrational loads, harsh power cycling, and repetitive thermal expansion/contraction over 10 to 15 years of vehicular life.

Anti-Pump-Out Rheology

Traditional consumer thermal grease migrates out of the interface when surfaces expand and contract repeatedly during vehicle acceleration and braking. Songxi optimizes the crosslinked polymer matrix and particle packing morphology to exhibit non-Newtonian shear-thinning behavior under dispensing and robust elastic modulus recovery under thermal shock.

Zero Oil Bleeding & Dry-Out

Silicone oil separation (bleeding) can contaminate electrical terminals and optical sensors, while leaving behind dried, brittle fillers that create thermal barriers. Our ultra-purified synthetic base fluid and proprietary surface-treated ceramic fillers (Al₂O₃, AlN, BN) ensure less than 0.1% volatile mass loss and zero oil separation under continuous 150°C aging tests.

Automated High-Speed Dispensing

Engineered for automated Giga-factory manufacturing lines, our thermal greases and two-component dispensable thermal gels exhibit stable low-viscosity flow curves under automated robotic dispensing nozzles. This enables rapid line cycle times, zero stringing, uniform spread, and minimal nozzle wear over multi-million vehicle production volumes.

Our Vision & Core Focus

Our Mission

Songxi Technology is a high-tech enterprise specializing in the R&D, production, and sales of electronic adhesives. Based on silicone, polyurethane, acrylic, and epoxy systems, we provide reliable bonding, sealing, and protection solutions for power electronics, optoelectronics, new energy, automotive, and aerospace industries.

We are committed to becoming a trusted provider of functional polymer material solutions for the electronics industry. Through continuous innovation and application development, we promote the localization of high-end electronic adhesives and help intelligent devices achieve greater stability and durability.

Songxi Technology R&D and Manufacturing Base
Comprehensive Material Matrix

Our Business

From standard catalog formulations to tailored polymer synthesis, Songxi delivers end-to-end electronic adhesive and thermal management capabilities.

Core Business Icon

Core Business

Songxi's business covers three functional areas: adhesive & sealing, potting & protection, and thermal interface materials. Our product portfolio includes PCBA fixing adhesives, UV adhesives, sealants, thermal conductive potting compounds, thermal greases, pads, two-component thermal gels, EMI shielding sealants, and reactive hot melt adhesives.

Customized Products Icon

Customized Products

Our products serve power batteries, photovoltaic modules, drones, automotive electronics, 5G communications, and LED lighting. We provide both standard products and customized solutions for applications such as BMS conformal coating, IGBT thermal filling, and power battery structural bonding, supported by extensive technical experience and application expertise.

Academic Excellence & International Quality

R&D And Quality

Led by a Ph.D. in Polymer Materials from Sichuan University, Songxi's R&D team has nearly twenty years of silicone application experience and has participated in over 100 product development projects. We maintain cooperation with research institutions including Chenguang Chemical Research Institute, Sichuan University, and Beijing Institute of Technology.

Certified with ISO9001, Songxi operates a comprehensive management system covering procurement, production, inspection, and after-sales service. Our products comply with RoHS and REACH requirements, with SGS verification and UL 94 V-0 flame retardant certification, ensuring consistent quality, electrical insulation integrity, and reliable delivery for tier-1 automotive manufacturing programs.

Advanced R&D, Testing & Automated Production Facilities

Automotive Grade Lineup

Comprehensive Thermal & Adhesive Product Series

Explore our full line of specialized thermal grease, potting compounds, structural adhesives, and interface gap fillers engineered for high-reliability EV powertrain integration.

Two-component thermal gel for automotive battery BMS module
EV BMS Cooling
Two-Component Thermal Gel for Automotive BMS Modules

Automated dispensable gel with exceptional thermal dissipation, vibration buffering, and low modulus to protect fragile surface components.

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Thermal grease for chip-level gaps
Semiconductor Grease
Thermal Grease For EV Power Battery Controller Chips

Formulated with ultra-fine ceramic micro-particles to maximize thermal transfer efficiency across high-density power semiconductor chips.

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Thermal pads for module-level uneven gaps
Gap Pad System
Automotive Battery Module Level Uneven Gap Thermal Pads

Engineered for large mechanical tolerance absorption between battery casing frames, cold plates, and cell modules.

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Heat dissipating potting silicone
Flame Retardant TIM
UL 94 V-0 Heat Dissipating Potting Silicone Compound

Self-extinguishing, deep-curing silicone potting material designed to isolate moisture and dissipate concentrated heat in EV onboard chargers (OBC).

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Phase change & non-silicone thermal grease
Non-Silicone Option
Non-Silicone Thermal Grease For Sensitive Optoelectronics

Synthetic fluid matrix eliminates siloxane volatilization risks, ensuring zero contact poisoning in optical sensors and high-voltage relays.

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IGBT Inverter Thermal Gel
High-Voltage IGBT
Thermal Conductive Gel for EV Inverter & SiC Modules

High-dielectric, ultra-stable thermal interface formulation tailored for 800V silicon carbide (SiC) traction inverters.

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Thermal conductive structural adhesive
Structural Bonding
Thermal Conductive Structural Adhesive for CTP Packs

Dual-functional adhesive delivering high structural tensile-shear strength combined with direct thermal pathing from cell to pack base.

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Customized battery thermal management sealant
Pack Enclosure
EMI Shielding & Thermal Sealant for Power Distribution (PDU)

Integrated electromagnetic interference shielding and high thermal conduction sealant for next-generation electric powertrain enclosures.

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Enduring Excellence in Advanced Electronic Polymers

Songxi adheres to integrity and quality throughout material selection, production, and delivery, turning reliability into a competitive advantage and earning long-term customer trust through professional service and continuous improvement across global markets.

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