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This equipment is used for the Z-fold stacking of cathode and anode electrodes and separators for sodium-ion battery cells, employing a dual-station simultaneous stacking method. The separator is actively unwound with automatic EPC, passes through a tensioning mechanism, and is fed into the stacking table. The stacking table, carrying the separator, moves back and forth between the left and right stations to place the electrodes. Cathode and anode electrode robot arms extract the respective electrodes from their magazines, place them onto a positioning platform for precise alignment, and then stack them onto the stacking table. After reaching the preset number of layers, the cell stack is clamped by a robot arm handling mechanism, the separator is cut, and the stack is transferred to the taping station for automatic taping. Simultaneously, the separator on the stacking table is blown and flipped over to initiate the automatic stacking of the next cell. The taped cell stack is then transferred downwards.
1. Active separator unwinding; Tension control; Separator EPC; Separator static elimination.
2. Ensures high overall stacking accuracy through precise positioning of the electrodes.
3. High stacking efficiency.
4. Dust Protection: Dust protection mechanisms installed on magazines and pre-positioning stations.
5. Reliability: Equipment modules are secured using dowel pins.
6. Multi-Sheet/Single-Sheet Protection: Equipped with multi-sheet, single-sheet detection using ultrasonic sensors for precise measurement, triggering alarms and machine stop to effectively prevent multiple sheets from being stacked into the cell.
7. Incoming Electrode Inspection: Fiber optic sensors inspect the four corners and the tabs of the electrodes, detecting and identifying missing/bent corners or defects. The system automatically alarms and stops for NG sheets.
8. Dust collection devices are installed at the electrode magazines, stacking table, and pick-up locations, with centralized dust handling.
Name | Parameters | Remarks |
Stacking Speed | Single station ≤ 0.6 s/pcs (full machine 0.3s/sheet) | |
Auxiliary Time | ≤12s | |
Alignment Accuracy Between Electrode and Separator | Center deviation ≤ ±0.2 mm | |
Separator End-Face Alignment Accuracy | ≤±0.4mm | |
Alignment Accuracy Between Adjacent Electrodes | ≤±0.2mm | |
Overall Electrode Alignment Accuracy | ≤±0.3mm | |
Camera | 5-megapixel, pixel accuracy ≤ 0.05 mm | |
CCD Positioning Accuracy | ≤±0.1mm | |
Linear Motor Speed | 3 m/s, repeatability ≤ ±0.02 mm | |
Static Voltage | ≤300V | |
EPC Accuracy | ≤0.3mm | |
Tape Cutting Accuracy | ±1mm | |
Taping Position Accuracy | ±1mm | |
Number of Stacking Layers | Adjustable within the thickness adaptability range | |
Outer Wrapping Separator | No tail winding; outer layer of the cell is a single layer of separator | |
Ambient Temperature | 5～35℃ | |
Relative Humidity | 5～55％HR | |
Air / Dust | Free from salt-containing, toxic, or corrosive gases; no conductive dust present | |
Magnetic Field and Vibration | Free from magnetic fields affecting the equipment; free from shocks and perceptible vibrations | |
Compressed Air | 0.5–0.7 MPa (5–7 kgf/cm²), consumption 800 L/min | |
Vacuum | Pressure: -70 kPa, consumption 400 L/min, dry | |
Power Supply | AC380V three-phase; voltage fluctuation ±10% | |
Power | 12 kW, frequency 50 Hz | |
Equipment Dimensions | L2,150* W4,500* H2,400mm | |
Weight / Load Capacity | Approx. 5,500Kg；＞650Kg/M² |
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