Pouch Cell Secondary Vacuum Sealing Machine with Pouch Piercing and Final Degassing Function

Product Overview

This secondary vacuum sealing system is an essential thermal packaging platform engineered specifically for pouch cell battery manufacturing, pilot-scale assembly lines, and electrochemistry research laboratories. Built to execute the critical post-electrolyte-filling degassing and final hermetic sealing stages, the equipment incorporates an integrated piercing mechanism that pierces the gas pocket under deep vacuum before applying uniform heat and pressure to achieve a permanent, gas-tight bond. By removing evolved gases and resealing the aluminum-laminated pouch in a single controlled cycle, the system prevents cell swelling, eliminates internal moisture ingress, and guarantees long-term electrochemical stability.

Designed for demanding laboratory R&D and flexible pilot-scale cell production, the platform accommodates various pouch dimensions, cathode-anode chemistries, and specialized polymer laminates. The robust aluminum-alloy vacuum chamber provides rapid evacuation and corrosion resistance against aggressive electrolyte vapors, while the precision pneumatic actuation ensures repeatable sealing parameters across continuous operation. Target users include lithium-ion battery developers, solid-state electrolyte researchers, supercapacitor manufacturers, and academic institutes requiring reliable, repeatable final sealing performance without compromising seal integrity.

Every mechanical and electrical sub-assembly is engineered for operational reliability, high thermal efficiency, and minimal maintenance overhead. High-conductivity copper sealing blades reduce electrical consumption while accelerating heat transfer to the packaging film, and dual-axis linear guide bushings maintain parallel alignment across the entire sealing plane. Whether processing standard lithium polymer cells or high-voltage experimental pouch configurations, this sealing system provides the process consistency and process control essential for modern energy storage development.

Key Features

• High-Conductivity Copper Sealing Bars: Precision-machined solid copper sealing heads deliver superior thermal conductivity and uniform heat transfer, cutting power consumption compared to conventional heating alloys while shortening warm-up and dwell cycle times.
• Integrated Automatic Pouch Piercing Mechanism: Built-in mechanical piercing apparatus automatically punctures the electrolyte injection/gas pocket inside the evacuated chamber, ensuring thorough gas extraction prior to thermal sealing.
• Dual Linear Guide Sleeve Precision Alignment: Upper and lower sealing bars, along with the vacuum chamber cover, are guided by hardened dual linear sleeves to ensure absolute parallelism, eliminate shearing stresses, and maintain an edge thickness variance below 15 µm.
• Corrosion-Resistant Structural Chamber: Constructed from high-density structural aluminum alloy, the vacuum chamber resists corrosive electrolyte solvents, fluorinated additives, and mechanical fatigue under deep vacuum conditions down to ≤-96 kPa.
• Independent Temperature and Pressure Regulation: High-precision PID temperature controllers maintain thermal stability within ±1.5°C up to 250°C, while an external pressure regulating valve allows fine pneumatic force tuning from 0 to 7 kg/cm².
• Wide Process Compatibility: Easily adjustable tooling accommodates standard and custom pouch formats up to 300 mm in edge length and film thicknesses ranging from 60 µm to 300 µm with fast changeover between cell batches.
• High Throughput and Low Air Consumption: Pneumatic drive architecture delivers operating speeds exceeding 180 cycles per hour with an economical compressed air consumption rate of approximately 0.2 L per sealing stroke.
• Compact Ergonomic Benchtop Footprint: Compact frame footprint integrates pneumatic manifolds, digital timing circuits, and safety interlocks into a self-contained unit suitable for cleanroom environments and glovebox integration.

Applications

Technical Specifications

Why Choose This Product

• Superior Thermal and Mechanical Precision: Equipped with solid copper sealing elements and dual-sleeve linear guides, this machine guarantees absolute temperature uniformity and parallel mechanical clamping, maintaining a critical seal thickness variance of less than 15 µm across the entire weld.
• Optimized Energy Efficiency & Cycle Speed: High thermal diffusivity copper heating heads transfer heat instantly to packaging films, minimizing standby power loss, reducing electricity consumption compared to standard steel dies, and supporting operational throughputs exceeding 180 cycles per hour.
• Robust Chemical & Vacuum Integrity: The precision-machined aluminum alloy chamber delivers continuous vacuum holding performance down to ≤-96 kPa while resisting electrochemical corrosion from volatile carbonates, esters, and salt decomposition by-products.
• Versatile Process Adaptability: With fully independent regulation of temperature (RT–250°C), pneumatic pressure (0–7 kg/cm²), and dwell duration (0–99 s), the equipment provides comprehensive flexibility for diverse cell dimensions, tab lead configurations, and multilayer pouch materials.

Contact our technical engineering team today to request a comprehensive quotation, review custom sealing bar options, or configure tailored battery assembly solutions for your laboratory or pilot line.

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