In the global new energy battery industry, battery boxes serve as the core protective carrier for power battery packs and energy storage battery modules, responsible for isolating external environments, protecting internal battery components and preventing safety hazards. Battery boxes face harsh working conditions such as moisture intrusion, dust pollution, temperature fluctuations, mechanical vibration and potential fire risks, which put forward strict requirements for the flame retardancy, sealing, waterproofing and durability of sealing materials. Battery box flame-retardant sealing silicone foam is a professional functional material specially developed for battery box sealing and protection, tailored to the high-safety and high-reliability requirements of battery boxes. Tengye supplies high-performance battery box flame-retardant sealing silicone foam, fabricated with battery-grade flame-retardant silicone raw materials and precision closed-cell foaming technology, to provide all-round, long-lasting flame-retardant and sealing protection for battery boxes, ensuring the safe and stable operation of the entire battery system.
Battery-Grade Flame-Retardant Silicone Material & Box-Optimized Foaming Process
Our battery box flame-retardant sealing silicone foam adopts imported high-purity, battery-grade flame-retardant silicone raw materials, with a halogen-free, low-smoke, non-toxic and environment-friendly formula that is specially optimized for battery box working characteristics. We adopt advanced closed-cell foaming technology to form a uniform and dense porous internal structure, which perfectly balances soft flexibility, high resilience, tight sealing and excellent flame retardancy, eliminating material defects that may cause abrasion, corrosion or damage to battery box shells, internal modules and circuit components.
This professional battery-grade flame-retardant silicone foam features an ultra-wide operating temperature range from -60℃ to 230℃, maintaining stable physical properties even under long-term high-temperature operation of internal batteries, extreme low-temperature storage and temperature cycle changes, without hardening, cracking, softening or deformation. It has excellent chemical resistance, effectively resisting corrosion from battery electrolyte, cleaning agents and acidic-alkaline substances, and also boasts outstanding aging resistance and weather resistance, adapting to long-term use in indoor and outdoor battery box scenarios. All products fully comply with RoHS 2.0, REACH, UL 94 V-0 and battery industry safety standards, with authoritative third-party test reports from SGS, Intertek and other institutions available for verification, fully meeting the strict quality and safety requirements of the global new energy battery box industry.
Core Performance Advantages for Battery Boxes
Targeted at the unique pain points of battery box sealing and protection, our battery box flame-retardant sealing silicone foam breaks through the limitations of traditional sealing materials, with fully optimized performance to meet the high-standard flame-retardant and sealing needs of battery boxes, covering all-round functional advantages:
-
Top-Tier Flame Retardancy: Meets UL 94 V-0 the highest flame retardant standard, self-extinguishing immediately after leaving the fire, with no molten dripping and no release of toxic and harmful gases, effectively blocking the spread of fire inside and outside the battery box, isolating fire hazards, and protecting adjacent equipment and personnel safety.
-
High-Level Sealing & Waterproof Dustproof: The dense closed-cell structure and soft compliant texture enable tight fitting with battery box flanges, cover gaps, wiring ports and shell joints, achieving IP67-IP68 professional protection rating, effectively blocking rainwater, moisture, dust, sediment and fine particles from invading the battery box, avoiding circuit short circuits, battery corrosion and performance attenuation caused by external environment intrusion.
-
Excellent Shock Absorption & Cushioning: The unique porous foamed structure efficiently absorbs vibration and impact generated during battery box transportation, installation and operation, reducing stress on battery box shells and internal modules, preventing structural deformation, loose connections and component damage, ensuring the integrity of the battery box and internal components.
-
Superior Temperature Resistance: Specially optimized for battery box temperature changes, it maintains stable flexibility and resilience in high-temperature (internal battery working heating) and low-temperature (outdoor storage, cold area operation) environments, without performance degradation, ensuring reliable flame retardancy and sealing performance in all climate and working conditions.
-
Low Compression Set & Durable Resilience: Possesses exceptional rebound performance, with a compression set of ≤5% after long-term continuous compression, retaining tight fitting and sealing effect under sustained assembly pressure of the battery box cover, avoiding sealing failure caused by permanent deformation during long-term use.
-
Box-Friendly & Non-Corrosive: The material is neutral and non-corrosive, with no chemical reaction with battery box shells (aluminum alloy, steel, plastic), internal battery modules and circuit components, ensuring no damage to battery box and internal parts during long-term contact use, and compatible with various battery box materials.
-
Easy Installation & High Compatibility: Light in weight, soft in texture and good in fit, it can be easily installed in irregular gaps and flanges of battery boxes, compatible with automated assembly lines and manual installation, effectively improving battery box assembly efficiency and sealing accuracy.
Main Application Scenarios
Our battery box flame-retardant sealing silicone foam is widely used in various battery box types with high safety, flame retardancy and sealing requirements, covering all core fields of the new energy battery industry:
-
New Energy Vehicle Battery Boxes: Flame-retardant sealing for power battery boxes of passenger cars, commercial vehicles, electric buses and trucks, adapting to the harsh vehicle-mounted vibration, temperature fluctuation and outdoor environment.
-
Energy Storage Battery Boxes: Sealing and flame-retardant protection for household, industrial & commercial and large-scale utility energy storage battery boxes, container-type energy storage battery cabinets, adapting to indoor and outdoor energy storage scenarios.
-
Industrial Battery Boxes: Sealing and protection for industrial power battery boxes, military battery boxes and special-purpose battery boxes, meeting high-standard safety and flame retardancy requirements.
-
Square-Shell/Cylindrical/Soft-Pack Battery Boxes: Customized sealing and flame-retardant protection for battery boxes matching different battery cell types, adapting to the structural characteristics of various battery modules.
Custom OEM/ODM Service
We provide comprehensive personalized customization solutions to match the diversified structures, sizes and performance needs of different battery box types, supporting personalized R&D testing, small-batch trial production and large-scale mass production:
-
Specification & Shape Customization: Customize thickness (1mm-20mm), density, hardness, color and external dimensions according to customer needs; support die-cutting, molding and special-shaped processing based on 2D/3D drawings or physical samples of battery boxes.
-
Performance Optimization: Adjust material formulas to enhance flame retardancy, sealing performance, temperature resistance and waterproofing; optional self-adhesive backing, surface smoothing and anti-static processing to meet the assembly needs of battery boxes.
-
Rapid Prototyping: Deliver customized samples within 7-12 days for battery box fitment and performance testing, with timely adjustments according to customer feedback to meet actual battery box assembly requirements.
-
Stable Mass Production: Support small-batch trial production for battery box R&D and large-scale continuous production for mass delivery, with complete quality traceability system to ensure consistent product quality and on-time supply, complying with battery industry production standards.
Precautions for Use
To ensure the full performance of battery box flame-retardant sealing silicone foam, extend its service life and guarantee stable flame-retardant and sealing effect during long-term battery box operation, please strictly abide by the following guidelines during installation, use and storage:
-
Before installation, thoroughly clean the bonding surface of battery box flanges, covers and shell joints to keep it dry, smooth, free of oil, dust, burrs and impurities, ensuring a tight and gap-free fit between the foam and the battery box surface.
-
Control the compression ratio reasonably during installation, generally controlled at 30%-50%, avoid excessive compression to prevent permanent deformation of the foam, which will directly affect its flame retardancy, sealing, shock absorption and temperature resistance performance.
-
Store the product in a cool, dry and ventilated environment before installation, avoid long-term exposure to strong sunlight, high-temperature heat sources and open flames, and keep away from flammable, explosive and corrosive chemicals (such as battery electrolyte) to prevent premature aging and performance degradation.
-
Select the appropriate product specifications, thickness, hardness and performance grade according to the battery box type, application scenario and battery industry safety standard requirements, especially ensuring the flame retardancy grade meets the actual safety needs.
-
During transportation, handling and installation, avoid sharp object scratches, heavy pressure and violent impact on the foam, so as not to damage the internal foaming structure and external shape, affecting its normal flame-retardant and sealing performance.
-
During battery box maintenance, check the fitting condition of the foam regularly, especially for battery boxes in harsh outdoor environments, and replace the aged, deformed or damaged foam in a timely manner to maintain the flame-retardant and sealing protection effect of the battery box.
Strict Quality Control System
Adhering to the principle of "quality first, safety supreme", we implement a full-process strict quality control system for battery box flame-retardant sealing silicone foam, covering raw material procurement, production processing to finished product delivery, ensuring each batch of products meets the high standards of the battery box industry:
-
Raw Material Inspection: 100% full inspection of battery-grade flame-retardant silicone raw materials, verifying flame retardancy, temperature resistance, environmental protection indicators and battery box compatibility before entering the production process.
-
In-Process Monitoring: Real-time dynamic control of foaming, molding and cutting parameters to ensure uniform pore structure, accurate dimensional tolerance and no defects such as bubbles, burrs, cracks and flash, meeting battery box assembly accuracy requirements.
-
Finished Product Testing: Conduct comprehensive performance tests including flame retardancy, sealing, waterproofing, shock absorption, temperature cycle and compression set, issuing complete test reports and certification documents for each batch, ensuring product consistency and reliability.
Tengye: Your Trusted Battery Box Sealing Partner
At Tengye, we focus on the R&D, production and customized services of high-performance battery box flame-retardant sealing silicone foam, relying on professional foaming technology, strict quality control and intimate after-sales support, to provide safe, durable and reliable flame-retardant and sealing solutions for global battery box manufacturers and battery system suppliers. We are committed to improving the safety, stability and service life of battery boxes, and becoming a long-term trusted core partner in the global new energy battery industry. Contact us today to get a free technical consultation, customized sample and exclusive quotation for mass production!
