OSLB-1300 Back Contact Cell Welding Machine Overview

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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

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

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:

• Email: [email protected]

• Phone: +8618571646990

• WhatsApp: +8615961592660

• Head Office: Wuhan Yangtze River Center, Wuhan, China

• Website: www.ooitech.com

Watch our solar panel production line videos and subscribe to our YouTube channel for the latest factory updates and equipment demonstrations:

• YouTube Channel: www.youtube.com/ooitech

• MBB Full Automatic Production Line Video: Watch Here

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• Product Catalogue: Download Catalogue

• Company Profile: Download Company Profile