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Vertical Vacuum Sealing Machine | Pouch Battery Final Seal Equipment with -0.095MPa Vacuum & 260°C Temperature Control
This Vertical Vacuum Sealing Machine is designed for final vacuum sealing of soft pack (pouch) batteries. Featuring a vertical single-chamber design with a moving chamber mechanism, the system automatically transports the battery to the vacuum sealing station where the chamber is evacuated to -0.095MPa, the gas bag is punctured, and the pouch edge is heat sealed. Available with sealing temperature up to 260°C (±2°C accuracy) and sealing head length of 350mm, this machine handles batteries up to 330×250mm (including gas bag) with thicknesses of 3-10mm. The simple manual loading/unloading process and reliable vacuum sealing make it ideal for R&D, pilot lines, and small-batch production.
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Pouch cell vacuum sealing Product Overview
The Vertical Vacuum Sealing Machine is a specialized piece of equipment for the final sealing (secondary sealing) of soft pack (pouch) lithium batteries. After electrolyte filling and initial sealing (primary sealing), the battery enters this machine for vacuum degassing and final sealing – a critical step that removes residual gases and ensures long-term battery performance and safety.
The machine features a vertical single-chamber design where the battery is manually placed in the chamber at the loading/unloading position. When the operator activates the dual-start buttons, the chamber automatically moves to the vacuum sealing station. The upper and lower chambers close, the cylinder press plate clamps the cell, a pre-vacuum is drawn, the gas bag is punctured to release gases, a vacuum holding phase ensures complete degassing, and the final heat seal is performed. The chamber then returns to the loading/unloading position for manual removal. This compact, bench-top design is ideal for R&D facilities, pilot production lines, and small-batch manufacturing.
Process Flow
Manual Loading: Operator places the battery into the open sealing chamber at the loading/unloading position.
- Dual-Start Activation: Operator presses both start buttons simultaneously to initiate the cycle
Chamber Movement: The chamber automatically moves to the vacuum sealing station.
Chamber Closing: Upper and lower chambers close to form an airtight environment.
Cell Clamping: Cylinder press plate clamps the cell to secure it during sealing.
Pre-Vacuum: Chamber is evacuated to a pre-set vacuum level.
Gas Bag Puncture: The gas bag is pierced to release internal gases and electrolyte vapors.
Vacuum Holding: Chamber maintains vacuum at ≤-0.095MPa for complete degassing.
Heat Sealing: The sealing head applies heat (up to 260°C) and pressure to seal the pouch edge.
Chamber Return: The chamber returns to the loading/unloading position.
Manual Unloading: Operator removes the finished sealed battery. The cycle repeats.
Vertical vacuum sealing machine Key Features & Advantages
| Feature | Benefit |
| Vertical Single-Chamber Design | Compact footprint; easy loading/unloading; ideal for R&D and small-batch production |
| Moving Chamber Mechanism | Automatic transport between loading and sealing stations for operator safety |
| High-Vacuum Capability | ≤-0.095MPa vacuum level ensures complete gas removal for optimal cell performance |
| Gas Bag Puncture System | Automated puncture for efficient degassing before final sealing |
| High-Temperature Capability | Up to 260°C with ±2°C accuracy for all standard aluminum film sealing requirements |
| Temperature Compensation Setting | Allows fine-tuning for consistent seal quality |
| High-Precision Parallelism | ±0.01mm for uniform pressure distribution across the seal edge |
| Adjustable Sealing Time | 0-99.9 seconds for process optimization |
| 350mm Sealing Head Length | Accommodates a wide range of battery sizes (up to 330×250mm) |
| Manual Operation with Safety Interlocks | Dual-start buttons and chamber positioning ensure safe operation |
| Multiple Cell Capacity | Small batteries can be sealed simultaneously (depending on size) |
Control System
PLC Control: Reliable and repeatable operation with sealed process parameters.
HMI Touchscreen: User-friendly interface for setting sealing temperature, time, vacuum parameters, and compensation values.
Temperature Monitoring: Real-time display of sealing head temperature with ±2°C accuracy.
Vacuum Monitoring: Digital display of chamber vacuum level.
Cycle Control: Automatic chamber movement and sealing sequence with position interlock.
Pouch battery final sealer Technical Specifications
| Parameter | Specification |
| Applicable Battery Size | Length ≤330mm, Width ≤250mm (including gas bag), Thickness 3-10mm |
| Sealing Head Length | 350mm |
| Sealing Width | 4-6mm (customer-specified upon order) |
| Sealed Edge Thickness | 0.14 – 0.3mm |
| Sealing Temperature | Room temp – 260°C adjustable, with compensation setting, control accuracy ±2°C |
| Sealing Head Parallelism | ±0.01mm |
| Sealing Time | 0 – 99.9 seconds adjustable |
| Chamber Vacuum Level | ≤ -0.095MPa |
| Mechanical Speed | 2PPM (varies by operator skill; multiple small cells can be sealed simultaneously) |
| Air Source | ≥0.5MPa, 80L/min |
| Power Supply | AC220V, 3KW |
| Vacuum Source | ≤ -0.095MPa, 200L/min |
| Machine Dimensions | 700mm(L) × 800mm(W) × 1600mm(H) |
| Machine Weight | Approx. 1T |