ECS-R Multifunctional Vacuum Electrolyte Injection & Standing & Sealing Machine for Pouch Cells, ERPCVEISSM

A Multifunctional Vacuum Electrolyte Injection, Standing (Diffusion/Soaking), and Sealing Machine is a core piece of assembly equipment used in laboratory R&D, pilot lines, and industrial production of pouch-type lithium-ion, solid-state (liquid/gel hybrid), and sodium-ion battery cells. By integrating precision liquid dosing, controlled vacuum cycling, standing/soaking time, and thermal pre-sealing into a single airtight workstation (or glovebox-integrated module), it prevents electrolyte evaporation, moisture contamination, and micro-bubble entrapment within the porous electrode stack.

The vacuum electrolyte injection & standing machine normally includes the following procedures: (1) Pre-Evacuation (Vacuuming): The assembled pouch or cylindrical cell is placed into the machine's sealed working chamber. The system draws a deep vacuum (typically -90 to -95 kPa), extracting all trace air and ambient moisture from the internal electrode folds and separator pores. (2) Precision Micro-Injection: While remaining under vacuum, a high-purity ceramic rotary metering pump delivers a precisely metered volume of electrolyte into the cell. (3) Vacuum Standing & Diffusion (The Pressure Swing): The machine enters its programmed standing phase. It toggles between deep vacuum levels and controlled atmosphere venting (often using an inert gas like Argon). This pressure swing mechanism utilizes capillary action to forcefully drive the liquid electrolyte deep into the micro-pores of the electrodes, achieving maximum wetting. (4) Vacuum Pre-Sealing (Thermal Impulse Sealing): While maintaining the target chamber vacuum (to prevent air entrapment), heated sealing blades clamping with regulated pneumatic pressure (0.2 MPa} - 0.6 MPa) heat-seal the inner polypropylene (PP) layer of the aluminum laminate film.