New Module Flaw Detection Solution! Yoha Solar Ships Inline PV Module EL Defect Detector for Mass Pr
On April 25, 2026, Yoha Solar completed the official loading and delivery of its self-developed and self-manufactured YH-EL4 inline PV module EL defect detector. The equipment will be fully deployed in the customer’s fully automatic PV module production line for mass production quality inspection. Tailored for refined full-process quality control of PV modules, this detector adopts mature core electroluminescence (EL) testing technology and a fully automatic intelligent operating architecture. It perfectly meets the rigid quality inspection demands of large-scale PV module manufacturing, builds a solid quality barrier for finished PV products, and empowers the PV manufacturing industry to achieve quality improvement, efficiency growth and compliant development.
As a core non-destructive quality inspection device for PV module production processes, the YH-EL4 inline PV module EL defect detector focuses on full-process defect tracing and quality screening throughout PV module manufacturing. It comprehensively covers the detection of all key module defects, accurately identifies fundamental material flaws such as cell fragments and micro-cracks, as well as process risks including cold solder joints and desoldering. Additionally, it strictly inspects process compliance issues such as the mixed use of solar cells of different grades, effectively preventing unqualified modules from flowing into subsequent production processes and the end market.
All core technical parameters of the equipment are optimized and verified under actual mass production conditions, delivering excellent compatibility and operational stability for industrial production scenarios. The detector supports the testing of monocrystalline and polycrystalline PV modules with a size of 2600×1500mm, fully adapting to module detection requirements before and after lamination. Adopting an inline automatic testing mode, the single-module testing cycle is ≤15 seconds with adjustable operating speed to match diverse production line takt time. Equipped with a 60-megapixel high-definition EL testing configuration and adjustable image acquisition time ranging from 100ms to 700ms, it balances high production line efficiency and micron-level testing accuracy. The control system consists of Siemens PLC and Weinview touch screen, realizing full automatic operations including feeding, positioning, power-on testing and image processing. The flexible adjustable probe position further adapts to the testing conditions of various PV module specifications.
The whole machine adopts a four-camera area array upward shooting configuration with customized industrial cameras, delivering clear imaging without corner rounding or distortion and achieving full coverage detection for 72-cell encapsulated modules. Equipped with an automatic barcode scanning function, the equipment synchronously records module unique identifiers to realize precise binding and traceability of testing data and module information. Composed of four core units including an automatic feeding and discharging system, high-definition imaging system, automatic power supply system and professional testing software, the device operates automatically with minimal manual intervention, and can also be switched to manual control mode to meet production commissioning and quality rechecking scenarios.
Yoha Solar has long been deeply engaged in the field of intelligent PV manufacturing and quality inspection, adhering to strict production quality standards. Relying on self-developed high-performance equipment and full-cycle thoughtful after-sales services, the company continuously iterates PV testing technologies and supporting services. With stable operation and high-precision efficient detection performance, Yoha Solar’s PV quality inspection equipment has gained high recognition and trust from PV manufacturers at home and abroad, continuously enhancing its brand reputation and market influence as a preferred partner for PV quality inspection equipment.
In the future, Yoha Solar will continue to focus on the intelligent PV manufacturing and quality inspection track, empowering high-quality production of PV enterprises with reliable self-developed equipment and professional after-sales support. Centering on the core demand for quality upgrading of the PV industry, the company will continuously increase R&D investment in core PV quality inspection technologies, iteratively optimize the performance and craftsmanship of all testing equipment, and polish high-standard product quality and a full-cycle after-sales service system. Yoha Solar will keep helping global PV manufacturers reduce costs, improve efficiency and strictly control quality, and work with the whole industry to build a new pattern of high-quality development for the PV new energy industry.
As a core non-destructive quality inspection device for PV module production processes, the YH-EL4 inline PV module EL defect detector focuses on full-process defect tracing and quality screening throughout PV module manufacturing. It comprehensively covers the detection of all key module defects, accurately identifies fundamental material flaws such as cell fragments and micro-cracks, as well as process risks including cold solder joints and desoldering. Additionally, it strictly inspects process compliance issues such as the mixed use of solar cells of different grades, effectively preventing unqualified modules from flowing into subsequent production processes and the end market.
All core technical parameters of the equipment are optimized and verified under actual mass production conditions, delivering excellent compatibility and operational stability for industrial production scenarios. The detector supports the testing of monocrystalline and polycrystalline PV modules with a size of 2600×1500mm, fully adapting to module detection requirements before and after lamination. Adopting an inline automatic testing mode, the single-module testing cycle is ≤15 seconds with adjustable operating speed to match diverse production line takt time. Equipped with a 60-megapixel high-definition EL testing configuration and adjustable image acquisition time ranging from 100ms to 700ms, it balances high production line efficiency and micron-level testing accuracy. The control system consists of Siemens PLC and Weinview touch screen, realizing full automatic operations including feeding, positioning, power-on testing and image processing. The flexible adjustable probe position further adapts to the testing conditions of various PV module specifications.
The whole machine adopts a four-camera area array upward shooting configuration with customized industrial cameras, delivering clear imaging without corner rounding or distortion and achieving full coverage detection for 72-cell encapsulated modules. Equipped with an automatic barcode scanning function, the equipment synchronously records module unique identifiers to realize precise binding and traceability of testing data and module information. Composed of four core units including an automatic feeding and discharging system, high-definition imaging system, automatic power supply system and professional testing software, the device operates automatically with minimal manual intervention, and can also be switched to manual control mode to meet production commissioning and quality rechecking scenarios.
Yoha Solar has long been deeply engaged in the field of intelligent PV manufacturing and quality inspection, adhering to strict production quality standards. Relying on self-developed high-performance equipment and full-cycle thoughtful after-sales services, the company continuously iterates PV testing technologies and supporting services. With stable operation and high-precision efficient detection performance, Yoha Solar’s PV quality inspection equipment has gained high recognition and trust from PV manufacturers at home and abroad, continuously enhancing its brand reputation and market influence as a preferred partner for PV quality inspection equipment.
In the future, Yoha Solar will continue to focus on the intelligent PV manufacturing and quality inspection track, empowering high-quality production of PV enterprises with reliable self-developed equipment and professional after-sales support. Centering on the core demand for quality upgrading of the PV industry, the company will continuously increase R&D investment in core PV quality inspection technologies, iteratively optimize the performance and craftsmanship of all testing equipment, and polish high-standard product quality and a full-cycle after-sales service system. Yoha Solar will keep helping global PV manufacturers reduce costs, improve efficiency and strictly control quality, and work with the whole industry to build a new pattern of high-quality development for the PV new energy industry.
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