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Precision engineered adhesive and thermal sealing systems tailored for rigorous automotive power modules, battery packs, and intelligent electronic architectures.
As global electric mobility accelerates toward higher energy densities, fast-charging 800V architectures, and integrated Cell-to-Pack (CTP) / Cell-to-Chassis (CTC) designs, thermal management and ingress defense have converged into a singular, critical discipline.
Lithium-ion power battery enclosures operate under extreme environmental stressors including road wash, condensation, immersion, and humidity cycling. Ingress of even microscopic water droplets causes dendrite formation, dielectric breakdown, and catastrophic short circuits. Waterproof adhesive sealants form an unbroken elastomeric matrix along pack-to-tray seams and busbar interfaces, preserving long-term electrical isolation under high pressures.
Rapid DC charging cycles generate intense localized heat spikes. Formulations hybridized with sub-micron alumina, boron nitride, and aluminum hydroxide conductive fillers facilitate direct conduction pathways from prismatic and cylindrical cells to liquid cooling plates. This continuous thermal interface reduces hot spot resistance, harmonizes pack-wide thermal gradients, and prolongs battery cell lifecycle.
Thermal mitigation is incomplete without rigorous flame retardancy. When a single cell undergoes an internal short circuit, modern adhesive sealants act as an ablative, ceramic-forming thermal barrier. Meeting UL94 V-0 standards, they delay cell-to-cell thermal propagation, venting gases safely through engineered channels while maintaining housing mechanical integrity during emergency shutdown sequences.
Cell-to-Pack (CTP) and Cell-to-Body (CTB) architectures replace conventional mechanical fasteners with high-modulus structural adhesives. By offering tensile lap shear strengths exceeding 10–15 MPa alongside high elongation-at-break (>150%), advanced silicone and polyurethane sealants absorb harsh road vibrations, torsional vehicle chassis flexing, and mechanical shock without delamination.
800V+ high-voltage platforms demand superior volume resistivity (>10¹⁴ Ω·cm) and breakdown voltage thresholds exceeding 20 kV/mm. Our waterproof sealing chemistry prevents electrochemical migration (ECM) and galvanic corrosion across mixed substrate joints (aluminum alloy, sheet molding compound (SMC), copper busbars, and engineered plastics) over a 15-year operational lifespan.
High-volume automotive gigafactories require rheologically stabilized, non-sagging sealants optimized for automated robotic dispensing. Engineered thixotropic index controls enable precise bead profiling, rapid room-temperature or dual-cure mechanisms, and bubble-free automated inline assembly lines, driving takt time reductions and zero-defect yields.
The structural evolution of EV traction batteries has shifted from modular, multi-tier assemblies to direct-to-structure methodologies. This transition elevates the adhesive sealant from a simple secondary gasket into a primary structural and thermal transfer component.
1. Cell-to-Cold Plate Bonding: The interface between battery cell bottoms and aluminum liquid cooling plates requires zero voiding to prevent air traps that act as thermal insulators. Low-viscosity, thermally conductive structural sealants flow into microscopic surface asperities, creating an unbroken heat conduit while offering durable waterproof adhesion.
2. Enclosure Perimeter & Service Lid Sealing: Battery pack covers (composed of aluminum or composite SMC) require continuous, service-removable or permanent sealants that survive gravel impact, salt spray (ASTM B117), chemical immersion (coolant, oil), and thermal shock cycling from -40°C to 125°C.
3. Battery Management System (BMS) Protection: High dielectric strength PCBA fixing adhesives and conformal encapsulants protect sensitive voltage sensors, microcontrollers, and wiring harnesses against dendrite formation, solder joint cracking, and electrochemical migration.
Empowering intelligent manufacturing and sustainable clean energy with advanced functional polymer technologies.
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.
Comprehensive material chemistry tailored to modern industrial requirements.
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.
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.
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 and reliable delivery.
Explore our full line of industrial-grade polymer solutions spanning waterproof sealants, optical adhesives, PCBA protection, and electromagnetic shielding.
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.