WGC-650 Bottom Welding / Grooving Machine

Bottom Welding and Grooving Machine for Cylindrical Cell Assembly

The Bottom Welding and Grooving Machine for Cylindrical Cells is a semi-automatic production system designed for two critical steps in cylindrical battery assembly: bottom spot welding and can grooving. In this process, the cell is transferred into the welding position, where the bottom tab or internal connection is welded to the cell can base, after which the cell is moved to the grooving station for controlled formation of the can groove near the mouth of the steel shell. This integrated workflow supports improved positional consistency, smoother material handling, and more efficient pilot-scale or pre-production cell assembly. It is offered for cylindrical formats including 18650, 21700, 26650 and 32650 with suitable die changes.

Key Features and Technical Highlights

• Integrated bottom welding and grooving in one connected machine
• Semi-automatic operation, with the two stations also usable separately
• Suitable for common cylindrical steel-can battery formats
• Adjustable process settings for grooving depth, shoulder formation, welding pressure, stroke, voltage, current and timing
• Production counting, manual debugging and fault-prompt functions for process control
• Nominal throughput of 40–50 cells per minute
• Power supply: 220–380 V, 50 Hz
• Equipment power: 4500 W
• Dry air requirement: 0.5–0.6 MPa
• Overall machine size: 2280 × 850 × 1520 mm
• Weight: 300 kg
  
  

Applications and Compatibility

This machine is well suited to lithium-ion, sodium-ion and related cylindrical cell R&D lines, pilot production facilities, and battery manufacturing environments where repeatable mechanical forming and electrical joining are required. It is particularly useful after jelly-roll insertion and before final sealing operations, helping researchers and engineers maintain better dimensional uniformity and electrical connection quality across batches. It can be paired with related ScienceGears solutions such as cylindrical winding machines, electrolyte filling systems, crimping and sealing equipment, and battery cyclers for a more complete cell fabrication workflow.

Why Choose ScienceGears

ScienceGears supplies advanced battery research instruments and cell assembly equipment for Australia and New Zealand, with a focus on technically informed support, workflow suitability, and application-based guidance. For laboratories and engineering teams building cylindrical cells, this system provides an efficient route to combine bottom welding and grooving in a compact semi-automatic platform while maintaining flexibility for different cell sizes and process requirements.