New Energy Vehicle Battery Sealing: The Critical Safeguard of Automotive Dispensing Systems

1. Ultimate Metering Accuracy: Avoiding Sealing Hazards from "Adhesive Deviation"
   Precision sealing of battery components (such as thermal conductive dispensing between cells) and structural bonding of battery pack frames require minimal and uniform adhesive volume. Insufficient adhesive leads to sealing failure, while excess causes material waste. Centron's Miflo series screw metering system, used in automotive dispensing, achieves a metering accuracy of ±1% with a minimum discharge volume as low as 0.014ml, precisely meeting the micro-dispensing needs of battery components. Similarly, the Puflo series plunger metering system offers ±1% accuracy and supports dual-component variable ratios (e.g., 100:100 to 100:10), adapting to the dispensing process for dual-component structural adhesives in battery packs, avoiding sealing risks from adhesive deviations at the source .

2. High-Viscosity Compatibility: Addressing "Special Material" Delivery Challenges
   Commonly used thermal conductive adhesives and structural adhesives for batteries are often medium to high viscosity materials (some may exceed 20,000 cps). If the dispensing system cannot deliver these stably, issues like glue breakage or sagging can occur. The feeding system in Centron's automotive dispensing solution uses a combination of ram pumps and bottom-fed pumps to directly transfer raw materials with viscosities ≥20,000 cps from original 20L/50L/200L packaging to the metering system, avoiding contamination from secondary handling. The Cyflo series gear metering system is compatible with high-viscosity fluids ranging from 20,000 to 3,000,000 cps, with an outlet pressure of up to 280 bar, ensuring stable delivery of high-viscosity adhesives and guaranteeing the continuity of the sealing process .

3. Continuous Production Capability: Balancing "Efficiency" and "Sealing Stability"
   The high production capacity demands for new energy vehicle batteries require dispensing systems to have continuous production capabilities, avoiding process interruptions from停机换料. Centron offers a dual-component dual-pump switching system for the battery industry, enabling non-stop material changeover and ensuring continuous dispensing. Simultaneously, the transfer system can pre-treat high-viscosity dual-component materials (e.g., stirring, degassing), achieving a material utilization rate of up to 99%. This reduces waste and ensures consistency in dispensing for each batch, keeping sealing performance stable and controllable .

1. Intelligent Control System: Ensuring Long-Term Stability of Dispensing Accuracy
   The ability to maintain dispensing accuracy long-term depends on the control system's response and adjustment capabilities. The Centron CS2000 series control system features a rapid program scan cycle as low as 1ms, enabling quick response to dispensing parameter changes and reducing adhesive pattern fluctuations. It also includes an adaptive control function that self-learns from adhesive viscosity variations, adjusting metering parameters in real-time to maintain ±1% accuracy even with slight material fluctuations. Furthermore, the system supports storing 255 independent recipes. For the dispensing needs of different battery models, simply switching recipes allows quick adaptation without frequent hardware adjustments, indirectly ensuring the stability of the sealing process .

2. Targeted Dispensing and Transfer Design: Adapting to Different Battery Sealing Scenarios
   Sealing requirements vary significantly across different parts of the battery, demanding flexibility from the dispensing system. For example, for large-area dispensing on battery trays, Centron's flat-nozzle dispensing valves (dispensing width 20-110mm) can be paired to ensure uniform adhesive coverage. For precise sealing of battery modules, needle-type dispensing valves (pressure 0-350 bar) can be selected for accurate dot dispensing. Regarding the transfer system, Centron uses SUS304 stainless steel day tanks (with optional volumes of 30L, 45L, 60L), featuring polished interiors and nano-coatings externally to ensure clean, contamination-free material handling. They also support vacuum degassing functions, preventing seal failure caused by bubbles in the adhesive .

3. Wear-Resistant and Corrosion-Resistant Design: Extending System Life, Reducing Sealing Risks
   Some materials used in battery dispensing (e.g., highly filled thermal conductive adhesives) are abrasive. If components of the dispensing system wear easily, it can lead to accuracy degradation, subsequently affecting sealing. Centron integrates DuraTec wear-resistant technology into its dispensing systems, using wear-resistant seals and surface materials that can extend equipment service life by over 50%. Key components (e.g., dispense valve needles, metering screws) are made from durable materials like tungsten steel or stainless steel, with sealing structures tested for over 100,000 cycles, maintaining accuracy under long-term use and reducing sealing hazards caused by component wear .
   
   

III. Service Support: Enabling the Automotive Dispensing System to "Continuously Safeguard" Battery Sealing

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