Battery Electrolyte Diffusion Pre Sealing and Secondary Sealing Three in One Machine

Product Overview

This multi-functional processing system integrates electrolyte standing diffusion, vacuum pre-sealing, and secondary degassing final sealing into a singular, compact platform engineered for high-performance battery fabrication. By consolidating critical post-filling cell preparation steps, the equipment facilitates thorough electrolyte absorption into porous electrode matrices under controlled negative pressure while executing hermetic vacuum thermal seals on laminated aluminum pouch packaging.

Designed primarily for lithium-ion pouch cell research, cylindrical cell electrolyte wetting, and pilot-scale prototyping lines, this unit serves electrochemical laboratories and battery manufacturing facilities seeking rigorous process consistency. The integrated design minimizes cell handling between electrolyte injection and final sealing, effectively preventing atmospheric contamination, reducing volatile solvent evaporation, and preserving pristine internal cell chemistry across sensitive research workflows.

Engineered with an anti-corrosion treated aluminum alloy vacuum chamber, heavy-duty pneumatic actuators, and precision-machined brass heating heads, the system delivers exceptional mechanical stability and process repeatability. Whether deployed on standard laboratory benches or integrated directly into inert atmosphere gloveboxes, the apparatus guarantees uniform pressure distribution, tight thermal tolerances, and dependable vacuum integrity throughout rigorous cell assembly cycles.

Key Features

• Integrated Tri-Functional Architecture: Combines post-injection electrolyte diffusion, vacuum thermal pre-sealing, and post-formation secondary degassing and final sealing into a single consolidated workstation, maximizing floor space and optimizing cell processing efficiency.
• Precision-Machined Brass Sealing Dies: Features durable 400 mm brass heating heads that provide rapid thermal conductivity, outstanding mechanical rigidity, and uniform heat transfer across the entire 5 mm seal seam, with custom sealing widths available to match specific pouch dimensions.
• Corrosion-Resistant Aluminum Vacuum Chamber: Constructed from high-strength aluminum alloy engineered to withstand corrosive liquid electrolytes and aggressive organic solvents, ensuring long-term structural integrity and minimal maintenance requirements.
• Advanced Digital PID Temperature Regulation: Delivers precise independent thermal control from ambient up to 250°C with an accuracy of ±2°C, preventing localized overheating and ensuring the consistent melt bonding of polymer sealing layers.
• High-Vacuum Deep Evacuation: Achieves deep vacuum levels exceeding -95 kPa, rapidly extracting trapped micro-bubbles from electrode layers to promote complete electrolyte infiltration and ensure void-free pouch hermeticity.
• Broad-Range Programmable Timers: Offers fully adjustable standing diffusion intervals from 0 to 9999 seconds and sealing dwell times from 0 to 99 seconds, allowing operators to fine-tune soaking kinetics and thermal bonding parameters for diverse cell chemistries.
• Linear Pneumatic Pressure Control: Utilizes an adjustable pneumatic pressing system delivering 0 to 8 kg/cm² of sealing force, ensuring precise mechanical compression without risking damage to delicate separator films or pouch foil substrates.
• Verified Sealing Head Parallelism: Precision-ground die surfaces guarantee flawless mechanical alignment, verified under 0.6 MPa sealing pressure at 200°C to eliminate micro-gaps, uneven seal thickness, or localized stress concentrations.
• Glovebox-Ready Pneumatic Configuration: Operates via standard 0.4 to 0.6 MPa compressed gas supplies, allowing seamless integration inside closed inert-gas glovebox environments by utilizing the matching glovebox working gas as the pneumatic driving medium.
• High-Throughput Cycling Capability: Pneumatic drive mechanisms achieve cycling speeds of ≥180 operations per hour with an economical gas consumption of approximately 0.2 L per sealing cycle, supporting continuous prototyping runs.

Applications

Technical Specifications

Why Choose This Product

• Consolidated Laboratory Workflow: By unifying electrolyte diffusion, initial pre-sealing, and post-formation secondary sealing into one machine, this unit minimizes equipment footprint and eliminates cell transport risks between separate processing stations.
• Superior Thermal and Mechanical Uniformity: The heavy-duty brass sealing assemblies and precision-machined linear pneumatic actuators deliver flat, parallel sealing contact verified under rigorous pressure and temperature benchmarks, preventing pouch leakage and micro-pinhole formation.
• Robust Chemical and Corrosion Resistance: Manufactured with treated aluminum alloy chambers and corrosion-resistant hardware, the equipment provides long-term operational durability even when continuously exposed to aggressive battery electrolyte vapors.
• Seamless Glovebox Integration: Engineered specifically for cleanroom and glovebox deployments, the pneumatic system operates smoothly using inert system gases, preserving chamber purity and protecting sensitive lithium-metal and sulfide-based cell chemistries.
• Flexible Parameter Programmability: With broad adjustment ranges for vacuum dwell, heating duration, thermal setpoints, and sealing force, the system adapts effortlessly to diverse research requirements and custom pouch dimensions.

Contact our technical engineering team today to receive a detailed quotation or to discuss custom tooling options tailored to your battery development specifications.

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