Vacuum Standing Box
PRODUCT PARAMETERS
Description
Vacuum Standing Box – Multi-Stage Vacuum System for Battery Electrolyte Wetting
We designed this Vacuum Standing Box specifically for pouch cell processing after electrolyte injection. It uses a controlled multi-stage vacuum process to remove air bubbles from the cell while ensuring complete electrolyte penetration. Unlike single-stage systems, this equipment prevents excessive electrolyte loss through its unique trapezoidal vacuuming method.
Working Principle
The upper cavity presses onto the bottom plate to form a sealed chamber. First, the system performs an initial vacuum cycle. Then, it releases the vacuum and allows the cell to rest. Next, it applies a second vacuum to reach -70KPa and holds this level for a programmed period. Finally, it performs a third vacuum cycle reaching -95KPa to thoroughly remove residual air from the cell.
Why three-stage vacuuming?
The trapezoidal vacuuming method prevents a large amount of electrolyte from being pumped out during degassing. Consequently, it allows the electrolyte to penetrate completely into the electrode materials while maintaining proper electrolyte volume in the cell.
Technical Parameters
| No. | Parameter | Specification |
|---|---|---|
| 1 | Compatible Cell Size | Length: 80-200mm (with tabs) / Width: 50-150mm (with air bag) |
| 2 | Equipment Dimensions | L550 × W440 × H750mm (max height with cavity open) |
| 3 | Programmable Cycles | 0 – 3 times (settable) |
| 4 | Pumping Time | 0 – 60 min (settable) |
| 5 | Standing Time | 0.1 – 99 s (settable) |
| 6 | Opening Stroke | 250 mm |
| 7 | Vacuum Connection | Tube inner dia. 25mm / Outer dia. Φ26mm |
| 8 | Vacuum Pump Capacity | 63 m³/h |
| 9 | Vacuum Degree (Standing) | ≤ -0.095 MPa (holds ≤ -0.090 MPa after 1 minute) |
| 10 | Chamber Size | 360L × 280W × 350H mm |
| 11 | Electric Box Size | 300L × 200W × 400H mm |
| 12 | Product Qualification Rate | ≥99.5% |
| 13 | Production Capacity | Depends on vacuum conditions (customer process related) |
| 14 | Equipment Weight | 87 kg |
| 15 | Operational Failure Rate | ≤2%/year |
| 16 | Equipment Utilization Rate | 98% |
| 17 | Power Supply | AC220V, 50Hz |
| 18 | Power Consumption | 1.0 KW |
| 19 | Compressed Air Source | 0.6 – 0.8 MPa |
| 20 | Air Pipe Diameter | Φ8 mm |
| 21 | Relative Humidity | 20 – 90% RH |
| 22 | Environment Temperature | 10 – 40°C |
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