Performs ultrasonic pre-welding and final tab-to-collector welding, followed by welding spot flattening and in-line insulation verification to ensure low-resistance connection and electrical safety of high-power pouch cells.
Why this machine: Large-format cells require low-resistance electrical joints. Automated energy control ensures high-strength welds that won’t overheat or fail under EV current loads.
Ideal User: EV battery manufacturers and module-oriented cell suppliers.
When to choose: When manual welding is insufficient for the current loads or safety requirements of the application.
Related Equipment: Related Equipment: stacking (Lamination) machine · Sealing machine · OCV testing machine
These features stabilize tab-to-collector joining through controlled energy delivery and positional restraint.
This machine is designed for welding current-collecting components in EV battery cells.
Its core functions include:
| Cell spec. (L) | 120-320mm |
| Cell spec. (W) | 80-200mm |
| Cell spec. (T) | 5-15mm |
| Production efficiency | 6-10ppm |
| Pre-welding postion positioning accuracy | ±0.5mm |
| Tab cutting positioning accuracy | ±0.5mm, burr≤30μm |
| Tape application position accuracy | ±0.5mm |
| Tape cutting length accuracy | ±0.5mm |
| First-pass yield (FPY) | ≥99.5% |
| Equipment utilization rate | ≥95% |
| Power | 25KW |
| Weight | 4.5T |
| Equipment dimension (reference) | 11500×3500×2200mm (LxWxH) |
This section outlines the welding step within pouch cell electrical integration.
Tabs are joined to conductive elements to establish current paths before final enclosure or testing stages.
Packaging focuses on welding heads and positioning mechanisms.
Welding preparation is standardized through the patented tab and corner forming equipment, which shapes electrode tabs and edge geometry before ultrasonic joining.
By ensuring uniform tab dimensions and surface condition prior to welding, it supports stable electrical connection and reduces variability in high-power pouch cell assembly.
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