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Negative Pressure Formation Machine
Our prismatic cell formation equipment is a high‑precision negative pressure formation machine designed for prismatic aluminum‑case cells. This vacuum negative pressure prismatic cell forming machine offers 24 independent channels, 150A charge/discharge current, and adjustable negative pressure from 0 to -100kPa. With ±0.05% voltage/current accuracy, 0.1mV resolution, and 64‑step programmable profiles, it ensures superior SEI formation and gas removal – ideal for EV and ESS prismatic cell production.
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Prismatic Cell Formation Equipment – High‑Precision Negative Pressure Formation Machine for Prismatic Lithium Batteries
What Is Prismatic Cell Formation Equipment?
This equipment performs the formation process for prismatic lithium‑ion cells under controlled negative pressure. Formation activates the cell by precisely charging/discharging to build the SEI (solid electrolyte interphase) layer, while the negative pressure environment removes gases generated during the process, improving SEI consistency and reducing internal pressure. Our prismatic cell formation equipment is specifically designed for aluminum‑case prismatic cells used in EVs and energy storage systems.
Negative Pressure Formation Machine – Key Technical Specifications
| Power supply | AC380±10%/50Hz | Equipment dimensions | L940xW1400xH1967mm |
| Operating power consumption | ≤22.5 KW | Number of channels | 24 channels per machine |
| Cell compatibility | Length 65‑210 mm, thickness 15‑120 mm, height 0‑300 mm, tab length 40‑150 mm | Charge/Discharge Voltage Range | DC 0mV~4.5V/DC2V~4.5V |
| Constant voltage range | DC 2~4.5V | Voltage measurement range | DC 0V~5V |
| Charge/discharge current range | 300mA~150A | Voltage measurement & control accuracy | ±(0.05% RD + 0.05% FS) |
| Voltage control/sampling resolution | 0.1mV | Current measurement & control accuracy | ±(0.05% RD + 0.05% FS) |
| Current control/sampling resolution | 1mA | Time measurement control accuracy | ≤±0.1% |
| Charge/discharge modes | CC, CV, CC+CV, CP, CR | Negative pressure range | (-100KPa-0)(adjustable) |
| Discharge cut‑off conditions | Voltage, time, capacity | Charge cut‑off conditions | Voltage, current, time, capacity, -ΔV |
| Control method | PC control, entire cabinet control with barcode scanning system | Process programming | Up to 64 steps, 256 cycles |
| Protection functions | Over‑voltage, under‑voltage, over‑current, under‑current, over‑capacity, power failure protection, data recovery | ||
Vacuum Negative Pressure Prismatic Cell Forming Machine – Features & Advantages
1. High Precision & Accuracy
Voltage and current measurement/control accuracy of ±(0.05% RD + 0.05% FS) ensures consistent formation across all cells.
0.1mV voltage resolution and 1mA current resolution enable fine‑tuned control of formation profiles.
2. Adjustable Negative Pressure (0 to -100kPa)
The vacuum system removes gas generated during formation, reducing internal cell pressure and improving SEI film uniformity.
Stepped negative pressure profiles can be programmed to match gas evolution at different formation stages.
3. Wide Cell Compatibility
Handles prismatic cells from 65mm to 210mm in length, 15‑120mm thickness, and tab lengths 40‑150mm – covers most EV and ESS cell formats.
Customizable fixtures available.
4. Flexible Process Programming
Up to 64 steps per cycle and 256 loops – create complex charge/discharge sequences (e.g., formation, aging, grading).
Supports multiple cut‑off conditions: voltage, current, time, capacity, and -ΔV for charge termination.
5. Independent 24‑Channel Control
Each channel operates independently; individual channel start/stop without affecting others.
Barcode scanning system for full cell traceability.
6. Advanced Protection & Data Security
Over‑voltage, under‑voltage, over‑current, under‑current, over‑capacity protection.
Power failure protection with data recovery – resume testing automatically after power restoration.
Hardware reverse polarity protection.
7. MES & Data Management
PC‑based control with data logging and export (CSV, Excel).
Optional MES integration for real‑time data upload and recipe download.
8. Compact & Energy Efficient
Dimensions 940×1400×1967mm – small footprint for high‑density installation.
≤22.5kW operating power reduces energy costs.
📥 Download the Detailed Technical Brochure to explore full specifications and integration guides.
📞 Contact Our Engineering Team for a provide confidential consulting and customized performance analysis for your specific yield goals.