Battery Tab & Busbar Spot Welding Machine, Copper to Copper Welding for Battery Pack Assembly Production

This workbench-style battery tab and busbar spot welding machine is specially developed for lithium battery pack production, designed for copper-to-copper welding and reliable cell-to-busbar connections. It delivers consistent, repeatable spot placement, making it ideal for small-batch prototyping, pilot workshops and mass battery assembly lines.

Unlike ordinary spot welders that struggle with copper materials, this unit is optimized for high-conductivity copper tabs and copper busbars. It achieves stable welding joints without burning, cracking or excessive thermal impact on battery cells. With a flexible welding arm structure, operators can easily adjust the welding head position to align different battery layouts, greatly improving the convenience and consistency of manual bench spot welding for battery packs.

The adjustable cantilever welding arm supports multi-directional movement of the welding head. It can reach different positions on the workbench freely, adapting to various battery module arrangements, including cylindrical cells, prismatic cells and custom battery pack layouts. The guiding structure ensures stable vertical feeding of the welding tip, helping operators achieve repeatable spot placement for every weld point.

Copper has high thermal conductivity, which brings great challenges to spot welding. This machine adopts a special welding energy control algorithm, accurately outputting concentrated pulse energy. It forms firm, low-resistance copper-copper joints, avoids cold solder and over-burning, and keeps the internal resistance of the battery connection stable, which is critical for the safety and cycle life of lithium battery packs.

Equipped with a color touchscreen HMI, users can set and store multiple welding parameters. Welding current, pulse time, delay and energy levels are all adjustable. Preset recipes can be saved for different copper thicknesses, tab sizes and busbar specifications. The system supports real-time status monitoring, fault alarm and parameter locking, preventing misoperation in continuous production.

The machine is fitted with an emergency stop button on the control panel. It comes with safety reminders and protective prompts, requiring operators to wear protective glasses during operation. The internal circuit has over-current, over-temperature and overload protection functions. The cabinet adopts a heat dissipation structure, which can run continuously for long hours in the battery assembly workshop.

The main unit is installed on casters for easy movement between workstations. It matches a modular workbench for battery positioning fixtures. Operators can place battery modules on the fixture, align the welding tip and complete spot welding efficiently. It is widely used for manual semi-automatic battery pack production.

1. Stable Copper-Copper Welding: Solves the difficulty of welding high-conductivity copper, producing low-resistance, reliable joints.
2. Repeatable Spot Positioning: The guided welding arm ensures consistent spot placement, reducing defective welds.
3. Recipe Storage Function: Save parameter groups for different workpieces and switch quickly between products.
4. Low Thermal Damage: Concentrated pulse energy avoids excessive heat transfer to battery cells, protecting batteries from thermal damage.
5. High Flexibility: Movable host and adjustable welding arm suit various battery pack layouts and small-batch customized production.
6. Compact Floor Space: Bench-top operation design integrates easily into existing battery assembly workshops.

This spot welder is mainly used in lithium battery pack manufacturing, including energy storage battery packs, electric vehicle auxiliary battery packs, e-bike battery packs, portable power station assembly and battery R&D laboratories. It is used for tab welding, busbar connection and battery module wiring.

Each machine is tested with copper busbar welding before shipment to verify welding stability and consistency. We provide operation manuals, parameter reference guides and remote technical support. Custom welding fixtures and process parameter tuning services are available upon request to match your specific battery production requirements.