Applies multi-stage vacuum compression and sealing for large cells to control swelling risk and internal pressure balance.
Why this machine: Its multi-stage deep-vacuum process is specifically calibrated for thick EV electrodes, achieving a final moisture content of <20ppm. This is critical to pass automotive safety standards and prevent swelling over thousands of cycles.
Ideal User: EV pouch cell manufacturers and automotive battery pilot or production lines.
When to choose: When sealing large-format cells where incomplete degassing can lead to swelling, safety risks, or early pack failure.
Related Equipment: EV electrolyte filling machine · EV battery packaging machine · OCV testing machine for EV battery cells . Multi-tabs laser notching & slitting machine
These features execute staged degassing and sealing under conditions suited for large cavity structures.
Core Advantages vs Conventional Vacuum Sealing Models
Large-format EV battery cells generate significantly higher gas volumes during formation compared to small consumer cells. Deep-vacuum sealing systems are specifically designed to address this challenge through multi-stage degassing strategies and stable pressure control.
By thoroughly removing trapped gases from thick electrodes and high-capacity cells, these systems mitigate swelling risks, improve mechanical stability, and enhance long-term safety. This capability is a decisive factor in ensuring durability and reliability across extended EV duty cycles.
This machine is designed for vacuum sealing of large-format EV battery cells.
Its core functions include:
| Cell spec. (L) | 160-300mm |
| Cell spec. (W) | 100-250mm |
| Cell spec. (T) | 5-15mm |
| Production efficiency | 6-8ppm |
| Sealing thickness accuracy | ±0.015mm |
| Width of Unsealed area | 0.5-1.5mm |
| First-pass yield (FPY) | ≥99.5% |
| Equipment utilization rate | ≥95% |
| Power | 25KW |
| Weight | 7T |
| Equipment dimension (reference) | 11500×2400×2500mm (LxWxH) |
This section outlines vacuum enclosure within large-format pouch cell production.
Degassing and final sealing prepare cells for formation, aging, and electrical evaluation.
Packaging focuses on large vacuum chambers and structural frames.
A patented Reinforced Vacuum Chamber Mechanism provides dimensional stability for large pouch cells during evacuation and sealing.
The structure supports repeatable processing under higher mechanical load conditions.
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