Automatic Inline Solar Panel EL Tester

Profile

The YH-EL4 PV module Automatic EL Tester is an advanced EL Tester designed for seamless integration into a Solar Panel Production Line. It applies an external constant current stabilized power supply to the battery module and uses electroluminescence technology for specialized EL tester image acquisition on semi-finished and finished photovoltaic cell modules before lamination, after lamination, and post-packaging. The device delivers high-quality imaging results on a large display, allowing for precise detection of various Solar Panel Electroluminescence test sale defects that are not visible to the naked eye. Customized YOHA software further enhances the clarity of these images.
Detect Defect Types
Battery Material Defects:
Includes fragments, hidden cracks, broken grids, and contamination.
Welding Process Defects:
Covers issues such as virtual welding and desoldering.
Mixing of Different Levels:
Identifies inconsistencies in material quality.
Application:
This Automatic EL Tester is used for automated testing and recording of solar modules—including mono-crystalline, poly-crystalline, and thin-film types—in a Solar Panel Production Line. It evaluates performance metrics to support quality control and optimization in solar cell production, ensuring that any Electroluminescence test sale defect is detected with high-quality EL tester image acquisition.
Technical Data:

Equipment Workflow:

1. The solar panel is placed face down with the long side facing forward into the docking station. The blocking device is raised to put the modules in entry waiting status. At the same time, barcode scanning is automatically performed, and after scanning, a photo is automatically taken using EL tester image acquisition.

2. The system captures images and the software automatically stitches them together for large panel size EL tester results.

3. After the large display shows the final image, the system gives an OK or NG signal and transmits it to the next level for action.

Equipment Structure:

1. This EL Tester mainly consists of the following units: automatic feeding and discharging mechanism, EL tester image acquisition system, automatic power-on mechanism, specialized software, and printing system.

2. Subsystem Description
   2.1 Automatic Feeding and Discharging Mechanism

   • Cabinet design enables seamless integration with an automatic transmission line (height 900-1080mm).

   • The transmission system employs roller and belt or guide rail methods for smooth material flow.

   2.2 Photography System Organization

   • The fully automatic EL Tester functions as a darkroom to prevent direct sunlight interference.

   • The EL tester image acquisition system utilizes multiple industrial cameras for high-resolution imaging.

   • The large panel size EL tester design ensures accurate imaging without distortion.

   2.3 Automatic Power-On Mechanism

   • A specialized fixture holds the electrode wire connector securely before testing.

   • The system employs a lifting probe contact method for automatic measurement and analysis.

This large panel size EL tester is optimized for Electroluminescence test sale applications, ensuring superior imaging on a large display. The fully automated process enhances efficiency and quality control in solar panel production lines.
Our Services:

About Us:

Yoha Solar is a high-tech enterprise dedicated to the research, development, manufacturing, sales, and after-sales service of serial photoelectric automation equipment.
15+ Years Engaged In Solar
300+ Customers Worldwide

Our company primarily serves the solar photovoltaic industry and holds its own import and export rights. We have developed a range of independent R&D equipment.
Main Machinery:Fiber Laser Cutting Machine
Solar cell sorting Machine
Solar Cell IV tester
EL defect tester
EL and AOI Appearance Tester
Solar Panel Production Line
Other Auxiliary Machines