Products Description
A nickel spot welder is a resistance welding device specifically designed for welding nickel strips and nickel-plated steel to lithium battery cell terminals, serving as core equipment on battery PACK assembly lines. Whether for series/parallel combinations of 18650, 21700 cylindrical cells, or high-volume manufacturing of power battery modules and energy storage battery packs, the nickel spot welder delivers efficient, stable, and precise welds that ensure reliable electrical connections and consistency.
Compared to traditional soldering, spot welding does not damage the internal structure of battery cells, with low internal resistance and minimal heat generation - making it the preferred process for lithium battery assembly.
Key Selling Points
Optimized for Battery Nickel Strip Welding
Specifically designed for pure nickel, nickel-plated steel, and copper-nickel composite strips (0.05–0.5mm thickness). Adjustable welding pulse width delivers strong joints with minimal spatter and no discoloration. Suitable for 18650, 21700, 26650, 32650, and various cylindrical cells.
MFDC/Transistor Technology - Clean Welds
Microcomputer control or transistor power supplies with fast current rise and millisecond-level precision. Supports constant current, constant voltage, and constant power modes. Dual-pulse design: pre-weld removes oxide layer, main weld ensures clean, uniform, non-blackening joints.
Multiple Drive Options - From DIY to Production
Foot-operated: Cost-effective for small-batch, repair, DIY
Pneumatic: Stable pressure for medium-volume production
Servo-electric: High precision with anti-impact - ideal for automated lines
Highly Automated - One Operator, Multiple Machines
Fully automatic models feature X/Y/Z/R multi-axis servo drives, DXF file import for automatic welding path generation, array layout, breakpoint resumption, and zone welding. Speeds reach 9000–10500 points/hour (approx. 0.4 seconds per weld). One operator monitors multiple units.
Water-Cooled Electrodes - Sustained Operation
High-power automatic models feature chiller-based circulating water cooling, effectively managing electrode temperature for consistent weld quality during extended production runs.
Quality Monitoring & Alarms
Real-time monitoring of welding current, voltage, power, and resistance waveforms. Automatic alarms and shutoff for undercurrent, undervoltage, or spatter. Prevents defective products from leaving the line.
Applications
Lithium Battery PACK Assembly: 18650, 21700, 26650, 32650 cylindrical cell series/parallel nickel strip welding
Power Battery Modules: EV battery packs, power tool battery packs
Energy Storage Battery Packs: Home ESS, base station battery packs
Consumer Electronics Batteries: Mobile phone, laptop, MP3 batteries
Hardware/Appliance Components: Wire-to-terminal connections, appliance part lead welding
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