OSLB-1300 Back Contact Cell Welding Machine Overview
Precision Welding Solution for BC Series Solar Cells
The OSLB-1300 is a fully automatic back contact cell welding machine engineered for high-speed, high-precision welding of BC series solar cell strings, including IBC, ABC, and HPBC cell technologies. Developed by Ooitech, this advanced stringer machine achieves a production capacity of ≥1,000 cells per hour with a cell fragmentation rate of ≤0.2%, making it an essential piece of equipment for manufacturers producing next-generation back contact solar panels.
The equipment integrates a complete workflow from cell loading to welded string unloading. The system includes A/B dual cell loading boxes, A/B gluing control systems, a loading translational mechanical arm, cell transmission table, cell flipping system, CCD + four-axis SCARA robot detection and positioning system, ribbon handling mechanism, welding transmission table, infrared temperature-controlled heating system, inline string EL inspection system, and a fully automated unloading mechanism.
How the OSLB-1300 Works
The working principle follows a streamlined automated process:
The loading translational mechanical arm picks solar cells from the cell box and places them on the gluing table for positioning and glue/solder paste application.
The transfer station moves cells to the CCD detection and positioning station, where the industrial camera sends coordinate data to the four-axis SCARA robot.
The robot corrects cell placement with ±0.2mm accuracy and positions cells onto the welding transfer station.
Ribbon clamping claws pull processed ribbons to the welding station while the manipulator lays glued cells onto the welding ribbons. Claws and robot work alternately to complete ribbon and cell placement.
The welding transfer station features multiple independently controlled temperature zones for precise welding control.
Arranged ribbons and cells pass through the infrared heating light box station where controlled heating completes the soldering process.
Welded cell strings are conveyed to the unloading station for EL inspection, then the unloading mechanism places strings into cell string boxes with clean paper separation to prevent scratching.
Technical Parameters
| Parameter | Specification |
|---|
| Model | OSLB-1300 |
| Production Capacity | ≥1,000 PCS/H |
| Positioning Accuracy | ±0.10mm |
| Maximum Operating Speed | 1,000mm/s (Adjustable) |
| Applicable Cell Size | 166210 x 30166mm |
| Maximum String Length | 1,800mm |
| Welding Method | Gluing + Ribbon Welding |
| Gluing Systems | 4 Sets |
| Cell Detection | CCD Camera Detection (Missing Corner) |
| Placing Accuracy | ±0.2mm |
| Spray Media | Solder Paste or Conductive Glue (Customer Process) |
| Cell Fragmentation Rate | ≤0.2% (Class A Cells) |
| Equipment Failure Rate | ≤3% |
| Loading/Unloading Method | Automatic Loading and Unloading |
| Electrical System | PLC + Touchscreen + Servo + Module |
| HMI | Touchscreen, Friendly Interface |
| Error Alarm | Real-Time Fault Alarm |
| Device Color | Main Traffic White + Sky Blue |
Key Technical Advantages
A/B Dual Cell Loading and Gluing System
Dual A/B loading boxes handle A and B cells independently for seamless production
High-precision double gluing platform with precision gluing valves
Servo motor and ball screw drive ensure consistent glue application
Two-way adjustable material box accommodates all cell sizes up to 210mm
Automatic empty cell detection with alarm notification
Advanced CCD + SCARA Robot Positioning
Four-axis SCARA robot delivers fast and accurate cell placement
800W pixel industrial camera for high-resolution cell inspection
±0.2mm positioning accuracy ensures precise cell-to-ribbon alignment
Built-in detection for missing corners and incorrect cell placement
Coordinates transmitted in real time for dynamic correction
Precision Welding Transfer and Infrared Heating
Multi-zone welding transfer table with individual temperature control per zone
Real-time temperature monitoring with PID temperature control and adjustment
Teflon belt conveyor prevents material adhesion
Zoned adsorption system secures cells during transport
Dedicated infrared lamp heating module with high-precision temperature control for uniform soldering
Comprehensive Ribbon Handling System
10 sets of linear mechanisms for ribbon handling
10 sets of ribbon inspection mechanisms ensure ribbon quality
Front and rear modules press ribbons into position
19 sets of ribbon grippers with servo-driven linear guide modules for high-precision ribbon pulling
Inline EL Inspection and Automated Unloading
3-camera EL inspection system supports maximum string length of 1,800mm
Detects micro-cracks, cold solder joints, and welding defects in real time
Automated unloading conveyor with servo motor and PU belt drive
Independent silicone vacuum suction cups for cell strings and clean paper
Clean paper separation prevents string surface scratching during stacking
Intelligent Software Control
Specialized software for easy editing and parameter modification
Friendly human-machine interface with touchscreen operation
Centralized numerical control with keyboard-based parameter settings
All main parameters can be saved and recalled
Dual working modes (Operation and Setting) with hierarchical password protection
Real-time fault alarm system for immediate troubleshooting
Premium Component Selection
| Component | Brand | Application |
|---|
| Steel Frame | China | Machine Frame |
| PLC | INOVANCE / China | Machine Control System |
| Proximity Switch | OMRON | Robot Arm Positioning Control |
| Pneumatic Components | AirTAC / SMC | Whole Machine Pneumatics |
| Air Switch | Chint | Machine Control System |
| AC Contactor | Schneider | Machine Control System |
| Control Card | China | Machine Control System |
| Servo Motor | INOVANCE / Xinjie | X/Y Module Drive |
| Touchscreen | Kunlun Tongtai / INOVANCE | HMI Control System |
| Guide Rail & Screw Rod | WON | X/Y Module |
| Four-Axis Robot | China | Cell Grabbing and Positioning |
| Camera | China | CCD Detection Positioning |
| Infrared Welding Light Box | Customized | Cell and Ribbon Welding |
Product Applications
Back Contact Solar Panel Production Lines
The OSLB-1300 is specifically designed for manufacturers producing back contact solar modules, where electrical connections are made on the rear surface of the cell. This machine is the core welding equipment for:
IBC (Interdigitated Back Contact) solar panel production - Full rear-contact cell architecture requiring precise glue application and ribbon alignment on the back surface
ABC (All Back Contact) solar panel manufacturing - Advanced back contact technology demanding high placement accuracy and low breakage rates
HPBC (Hybrid Passivated Back Contact) solar panel lines - Next-generation hybrid back contact cells requiring controlled infrared welding processes
General BC series solar cell string welding - Any back contact cell technology utilizing glue or solder paste with ribbon interconnection
Applicable Production Scales
Solar panel production lines ranging from 5MW to 1GW annual capacity
New factory setups requiring turnkey back contact module production equipment
Existing production line upgrades from conventional to back contact cell technology
Research and development facilities for back contact solar cell and module optimization
The machine supports cell dimensions from 166mm to 210mm with flexible string lengths up to 1,800mm, accommodating M6, M10, and M12 cell formats commonly used in modern high-efficiency back contact solar modules.
Warranty and After-Sales Service
Warranty Coverage
One-year warranty after successful installation, or 16 months from Bill of Lading date, whichever comes first
Machines must be operated by trained personnel after installation and training
Free maintenance services and necessary spare parts during warranty period (excluding consumables; courier costs borne by buyer)
If buyer's engineers cannot resolve issues during warranty, Ooitech will dispatch engineers to the buyer's facility (round-trip tickets, local transport, hotel, and food costs borne by buyer)
Warranty Exclusions
Damage from misuse, abuse, or unauthorized modification by parties other than Ooitech-authorized technicians
Equipment use inconsistent with the operation manual
Consumable parts are provided upon payment
Post-Warranty Support
Free online technical guidance and support continues after warranty expiration
Spare parts supplied at favorable prices
On-site engineer visits available with buyer covering travel, visa, accommodation, food, and labor costs per Ooitech standards
Contact Ooitech - Get a Quotation
Your Trusted Partner for Solar Panel Production Solutions
Ooitech, founded in 2013, is dedicated to providing turnkey solar energy solutions with over 10 years of experience in the PV industry and industrial laser applications. Our equipment has been exported to Poland, Hungary, Korea, Mexico, Egypt, Algeria, India, Saudi Arabia, Syria, Kazakhstan, and many more countries worldwide.
Ooitech turnkey solutions include:
Supply 5MW to 1GW solar module production lines
Upgrade traditional PV lines to the newest MBB production lines
Factory construction consulting and facility layout design
Raw material sourcing guidance
Production procedure assistance and solar power station installation support
For pricing, technical consultation, or a customized production line proposal for the OSLB-1300 Back Contact Cell Welding Machine, contact our team today:
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