Strict quality control in the production process of photovoltaic modules

　　The production process of photovoltaic modules involves multiple procedures, and the required instruments and equipment are also diverse. The following are some of the main production equipment, functions, and applications for photovoltaic module production.

　　1、 Automatic battery cell sorting machine

　　Function: Select and combine battery cells with consistent or similar performance, classify the output parameters (current, voltage) of the tested battery cells, detect battery cell defects in advance, and use EL to detect defects such as hidden cracks, black spots, and black spots in the battery cells.

　　Application: Used for power detection, sorting, and defect detection of battery cells to ensure the quality of components

　　2、 Laser cutting machine

　　Function: Use a laser cutting machine to cut the battery cells into the required size according to the component specifications. The conventional "half cutting technique" is used to cut the entire battery cell in half, which has improved efficiency.

　　Application: In the production of photovoltaic modules, it is used for cutting solar cells and has the characteristics of smooth cutting surface, high precision, and fast speed.

　　3、 EVA/TPT cutting machine

　　Function: Mechanical equipment used for cutting EVA (ethylene vinyl acetate copolymer) and TPT (polytetrafluoroethylene) materials. This type of cutting machine has a wide range of applications in the production of solar modules, which can significantly improve production efficiency and cutting accuracy, reduce raw material waste,

　　Application: It has the characteristics of high work efficiency, easy operation, smooth running, automatic tension control, high processing accuracy and automation level.

　　4、 Solar cell string welding machine

　　Function: Through precise welding technology, the positive and negative terminals of the battery cells are connected in series using welding strips to form a battery string.

　　Application: Mainly suitable for the production of photovoltaic cell modules, improving production efficiency and product standardization level, and enhancing the overall operational efficiency and stability of photovoltaic power generation systems.

　　5、 Solar module EL appearance tester

　　Function: A device used to detect internal and external defects in solar cell modules. Its working principle is based on the electroluminescence characteristics of crystalline silicon, and it uses a high-definition infrared camera to capture near-infrared images to detect internal defects in the module

　　Application: Mainly used to detect internal and external defects of solar cell modules, such as hidden cracks, fragments, virtual welding, broken grids, foreign objects and other abnormal phenomena. It has the advantages of high sensitivity, fast detection speed, and intuitive results, which can improve the quality of photovoltaic modules and reduce losses in the production process.

　　6、 Solar cell module laminating machine

　　Function: Lay the battery string on the substrate (backboard EVA solar cell EVA tempered glass), and then use a laminating machine to heat and pressure the EVA layer to melt it, bonding the various layers of substrate together to form the basic prototype of the photovoltaic module.

　　Application: Applied to solar photovoltaic production lines, it is a key equipment for completing the process from raw materials to finished solar panels. With the continuous development of the solar energy industry, the technology of laminating machines is also constantly advancing, with advantages such as high efficiency, energy saving, simple operation, and greater intelligence.

　　7、 Solar module framing machine

　　Function: A device used for assembling solar panel frames, mainly applied in the solar photovoltaic industry. By means of automation or semi automation, the solar panels are fixed inside the aluminum alloy frame to ensure the stability and sealing of the components.

　　Application: By assembling cylinders, linear guides, and steel structures, the aluminum alloy frame after module lamination can be pressed and positioned, simplifying the workload of workers, improving product quality, protecting photovoltaic modules from external environmental influences, and preventing damage.

　　8、 Component EL defect detector

　　Function: A device that uses the principle of electroluminescence (EL) to detect internal defects in solar panels. It applies voltage to the solar panel to make the defect areas inside it glow, and then captures these glowing areas through high-definition cameras to achieve precise positioning and analysis of internal defects in the photovoltaic panel.

　　Application: The component EL defect detector is suitable for the inspection of photovoltaic power plant components upon arrival and testing of components on brackets after installation, as well as quality inspection of components in warehouses/laboratories/factories. It can help users better complete product quality testing and control production and installation risks.

　　9、 Solar module IV tester

　　Function: A device specifically designed for accurately measuring the output power of photovoltaic modules. By simulating the conditions of sunlight exposure, the light energy is converted into electrical energy, and key parameters such as output current, voltage, and power of photovoltaic modules are measured in real time. The device also draws the current voltage (I-V) curve. Through this curve, we can intuitively understand the performance characteristics of photovoltaic modules under different working states.

　　Application: Performance evaluation: By measuring the voltage and current characteristics of photovoltaic modules, the IV tester can evaluate their power and efficiency, and is an important means of laboratory or on-site performance testing of photovoltaic modules. Quality control: During the production process, IV testing helps manufacturers ensure that their products meet established performance standards. Performing IV testing on installed photovoltaic systems can identify and diagnose potential electrical performance issues. Fault diagnosis and troubleshooting: The IV tester can accurately identify fault problems in photovoltaic modules. By comparing and analyzing the changes in the IV curve, operation and maintenance personnel can quickly locate the fault location and take corresponding maintenance measures. R&D support: During the development phase of photovoltaic cells, the IV tester provides key data to improve and optimize battery design.

　　The production process of photovoltaic modules requires strict quality control and testing to ensure the performance and quality of the final product. As a 15 year dedicated solar equipment manufacturer, Yaohua Laser is dedicated to providing customers with 10-500MW photovoltaic module production line solutions and comprehensive services. With the continuous improvement of solar energy technology and further reduction of production costs, solar energy as a clean energy source will be widely applied worldwide.

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