Application of the Xindashida SR20 Multi-Axis Robot in the Loading and Unloading of EL Testing Equipment in the Photovoltaic Industry
2025-07-25
Application of the Xindashida SR20 Multi-Axis Robot in the Loading and Unloading of EL Testing Equipment in the Photovoltaic Industry
Project Background
Before photovoltaic modules are packaged according to their quality grades, they must undergo testing. The EL (Electroluminescence) test is based on the principle that when a photovoltaic module is powered, charge carriers recombine at the PN junction, releasing photons with wavelengths ranging from approximately 900 to 1200 nm. These emitted photons are captured by a highly sensitive infrared camera to produce an image of the luminescence. In normal areas, the luminescence is uniform; however, defective areas—such as hidden cracks or broken busbars—exhibit dark spots or abnormal streaks because charge carrier recombination is hindered in these regions.
Traditional photovoltaic production lines require manual installation and removal of testing fixtures. Thanks to their high speed, high precision, and exceptional stability, the Xindash SR20 and SR10 robots have successfully replaced human labor to achieve automation.
Customer needs
• High requirements for production line flexibility; multiple production lines need to be compatible with different component designs.
• Traditional production lines rely heavily on manual labor and have lower efficiency.
• High trajectory accuracy is required when inserting the test plug;
Xinshida Solution
Proposal Description
Select the Xindash SR series SR20/1700 or SR10/2000 robot, paired with a high-precision vision system and a flexible gripper.
Scheme advantages
• Platform-based development—1700- or 2000-arm spans can be paired with different production line layout options;
• Visual positioning: The robot’s high-speed plug-and-pull motion is compatible with various connection methods, including straight insertion and mating insertion.
• Customize pipeline I/O and corresponding matching cables by pairing with different fixture solutions;
• It maintains excellent trajectory accuracy even at high speeds, meeting the 15-second production line takt time requirement.
• The overall workstation occupies less floor space than a manual workstation and can be directly used for upgrading existing lines.
• A single workstation can save 2 workers, while a two-station loading and unloading system can save 4 workers.
Scheme Composition
The project is equipped with two sets of Xindash SR series SR20/1700 units.
Associated products
SR20/1700 Universal Robot
Project Results
Xindashida Robotics has delved deeply into the photovoltaic industry, identifying and addressing customer pain points and achieving successful deployments at several leading end-user sites. As the pace of photovoltaic production lines continues to accelerate, Xindashida Robotics’ advantages—high speed, high precision, and exceptional stability—have earned the trust of its customers.
