Automatic Inline Solar Panel EL Tester

Technical Data:

1.Specifications:

1.1 Dark Box (Aluminum Alloy Profile, Aluminum-Plastic Panels)
The design is aesthetic, sleek, and lightweight, making it easy to transport and install, which is crucial for an Automated Solar Panel EL Tester operating on a Solar Panel Production Line. The aluminum-plastic panels effectively block external light from entering the dark box—a critical feature for high-quality EL Tester imaging and accurate EL Defect Testing. Additionally, the inner surface uses reflective aluminum-plastic panels to enhance the imaging quality required for an Automated Solar Panel EL Tester in a Solar Panel Production Line.

1.2 Shooting Mode
· Single (or Dual) Camera is integrated within the Automated Solar Panel EL Tester to capture EL defects with precision during EL Defect Testing.

1.3 Monitoring Points
· Before Lamination, the EL Tester monitors the solar modules as they move along the Solar Panel Production Line.
· After Lamination, the Automated Solar Panel EL Tester verifies EL defects to ensure quality in EL Defect Testing.

1.4 Camera
· Camera Sensor Manufacturers: Sony + Nikon, selected to meet the stringent requirements of an EL Tester used in Automated Solar Panel EL Tester setups.
· CCD Target Surface: Corresponding to the pixel resolution, ensuring the EL Tester delivers high-quality images for effective EL Defect Testing.
· Camera Type: CCD Cooling Type (Internal + External Cooling), essential for maintaining performance in an Automated Solar Panel EL Tester.
· Pixel: 24 Megapixels, providing the resolution needed for detailed EL Defect Testing.
· Image Acquisition Time: Adjustable from 1 to 60 seconds to adapt to various testing speeds on a Solar Panel Production Line.
· Capable of detecting cracks as small as 0.5mm in width, a key metric for EL Tester performance in EL Defect Testing.

1.5 Lighting Mode
· Mirror Reflective Side Lighting Mode is optimized for an Automated Solar Panel EL Tester to enhance contrast during EL Defect Testing on a Solar Panel Production Line.

1.6 Power Supply
· Voltage: 0-60V (Adjustable) to support the operation of an EL Tester on a Solar Panel Production Line.
· Current: 0-10A (Adjustable), ensuring stable power for EL Defect Testing in an Automated Solar Panel EL Tester.

1.7 Test Range
· Test Ambient Temperature: -10°C to 40°C, allowing the EL Tester to operate reliably across different conditions in a Solar Panel Production Line.

1.8 Test Parameters
· Target, Gain, Time, Gamma, Contrast, Data Wide settings are calibrated for EL Defect Testing.
· Component Type Tested: Solar Modules (Monocrystalline and Polycrystalline), integral to the Automated Solar Panel EL Tester used on a Solar Panel Production Line.

2. Equipment Configuration

2.1 One chassis forms the structural base for the Automated Solar Panel EL Tester.
2.2 One piece of 8mm tempered glass is installed as part of the EL Tester setup in the Solar Panel Production Line.
2.3 One reflective mirror is included to enhance EL Defect Testing.
2.4 One power supply unit is calibrated to support the EL Tester.
2.5 One computer is used to control the Automated Solar Panel EL Tester.
2.6 One set of specialized software is developed for EL Tester operations and EL Defect Testing.
2.7 Camera is an integral part of the Automated Solar Panel EL Tester.
2.8 One electrical control box manages the functions of the EL Tester on the Solar Panel Production Line.

3. Equipment Performance Specifications

The equipment has superior overall performance, essential for an Automated Solar Panel EL Tester operating in a high-speed Solar Panel Production Line:
3.1 Unique technology ensures more stable performance and higher efficiency in EL Defect Testing.
3.2 Fast testing speed enables the EL Tester to keep pace with the Solar Panel Production Line.
3.3 It can operate continuously for 24 hours without interruption, a critical feature for an Automated Solar Panel EL Tester.
3.4 Its rational structure makes installation and maintenance of the EL Tester more convenient and straightforward on the Solar Panel Production Line.
3.5 Optimal configuration of all systems and components ensures the EL Tester achieves the highest efficiency in EL Defect Testing.
3.6 A user-friendly control panel design offers simple and programmable operation, facilitating the use of an Automated Solar Panel EL Tester.
3.7 The module is photographed with the front facing down, ensuring accurate EL Defect Testing for both pre- and post-lamination phases in a Solar Panel Production Line.
3.8 Test Size: 2400x1300mm, suitable for integration into an Automated Solar Panel EL Tester within a Solar Panel Production Line.

4. Detectable Defect Types

The EL Tester is capable of detecting various defect types during EL Defect Testing:
· Welding Black Spots
· Hidden Crack Black Spots
· Mixed Current Levels
· Battery Process Defects
· Typical Cold Soldering
· Battery Raw Material Contamination
These defect types are critical for maintaining quality on a Solar Panel Production Line using an Automated Solar Panel EL Tester.

5. Dedicated Control Software

5.1 Designed specifically for the industry, the software features a user-friendly interface for ease of operation of the EL Tester during EL Defect Testing on a Solar Panel Production Line.
5.2 Its unique photo query functionality enhances the capabilities of the Automated Solar Panel EL Tester.
5.3 The system automatically scans barcode numbers and saves files with barcode-based names; it supports a Chinese-language interface, automatic control of the constant current source, barcode scanning, and automatic categorization and saving—all integrated into the EL Tester for efficient EL Defect Testing.
5.4 Flexible defect criteria settings allow adjustment of the degree and quantity of black spots, broken grids, fragments, and other defects, providing automatic statistics of defect types and quantities and automatic text file creation for saving test results from the Automated Solar Panel EL Tester.

6. Wide Applicability

The EL Tester is suitable for testing both monocrystalline and polycrystalline silicon solar modules on a Solar Panel Production Line, ensuring reliable EL Defect Testing across different module types.

7. Defect Detection Principle

The principle of EL Defect Testing in the Automated Solar Panel EL Tester is based on electroluminescence (EL) brightness, which is proportional to the minority carrier diffusion length. By applying voltage to the solar cell, it emits light that is captured by an infrared imager integrated into the EL Tester. Due to the lower diffusion length at defective areas, they emit weaker light, resulting in darker images that enable effective identification of defect types. This principle is essential for diagnosing process defects from silicon wafer issues, diffusion, etching, printing, sintering, and other manufacturing processes on a Solar Panel Production Line using an Automated Solar Panel EL Tester.

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