Power Battery Dual-Side spot welder TWSL-700L: Precision Welding Solution for Next-Gen Energy Storage

Industry Challenges in Battery Welding

As global demand for electric vehicles and energy storage systems surges, manufacturers face critical challenges in battery assembly:

Precision Gaps: Manual welding causes electrode misalignment, increasing short-circuit risks

Low Throughput: Traditional machines achieve <2,000pcs/day, lagging behind TWh-scale production demands

Compatibility Issues: Fixed tooling limits scalability across diverse battery formats (18650/21700/4680 cells)

TWSL-700L’s Five Core Technological Breakthroughs

Model: TWSL-700L

(Compatibility: Φ18–21mm | Length ≤70mm | Welding Efficiency 3,500pcs/h)

1. Dual-Side Synchronous Precision Welding

±0.05mm Positioning Accuracy: Laser-guided system ensures micron-level weld alignment

0.08–0.12mm Ultra-Thin Nickel Strip Welding: Optimized for high-energy-density automotive batteries

2. Intelligent Welding Architecture

PLC+Human-Machine Interface: Full-Chinese LCD programming with 100+ process parameter presets

600×310mm Free Travel Range: Accommodates irregular battery geometries

3. Advanced Process Control

Dual-Pulse Welding Technology: 800Hz high-frequency pulses ensure joint strength and conductivity

<60dB Noise Emission: Meets industrial noise pollution standards

4. Digital Production Enablement

MES System Integration: Barcode-based traceability from cell ID to welding parameters

SPC Statistical Process Control: Auto-generates quality reports, reducing defect rates by 70%

5. Energy Efficiency Optimization

Variable Frequency Drive: Idle power consumption <0.8kW (EU ErP compliant)

Hybrid Cooling System: Dual-fan + liquid-cooled design for 24/7 operation

Six Application Scenarios Driving ROI

Customer Success Stories

Global EV Battery Leader: Deployed 16 units of TWSL-700L, achieving:

Annual capacity: 36GWh (previously 12GWh)

Welding accuracy: ±0.05mm (vs. industry standard ±0.2mm)

European Energy Storage OEM: High-precision welding extended battery lifespan to 15+ years

Key Competitive Advantages

Dimension Traditional Welders TWSL-700L Welder

Single-Unit Output 2,000pcs/day 3,500pcs/day

Welding Precision ±0.2mm ±0.05mm

Tooling Adaptability Limited 5-Minute Setup Changes

Data Traceability Manual Records Full Lifecycle DB

Technical Specifications

Parameter Specification

Voltage Range AC220V/AC380V (50/60Hz)

Max Welding Speed 3,500pcs/hour

Temperature Stability ±1℃ @25℃ Ambient

Safety Features Overload Protection/ESD Guard

Certifications CE/UL/ISO 9001

Why Choose SUNKALEAD?

Proven Innovation: Core algorithm protected by Chinese invention patent 

Cost Efficiency: 60% lower TCO vs. imported counterparts

Ecosystem Synergy: Native integration with SUNKALEAD taping/molding systems

Accelerate Your Battery Manufacturing

 Free Whitepaper: "Achieving 4680 Battery Consistency with Advanced Welding Technology"

 Demo Request: Book a virtual factory tour of our Guangdong R&D center

Custom Solutions: Dedicated R&D for solid-state battery/tape automation 

Free Consultation: For any inquiries about battery pack assembly line solutions,please don't hesitate to contact us.