Color spectrum technology spectrophotometer has been applied in the photovoltaic industry - Database & Sql Blog Articles

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With the development and utilization of new energy, the photovoltaic industry is developing rapidly in China. In the development of the photovoltaic industry, the most prominent is the widespread use of solar cells. In order to fix the solar cells, and to be insulated, moisture-proof and isolated from the air to increase the service life of the solar cells, the solar backing film plays a very large effect. The spectrophotometer of Hangzhou Caipu Technology has been applied in the quality inspection of solar backsheet.
In the solar photovoltaic module lamination process, the solar cells are bonded using two layers of film, so that the solar cells are integrated with the glass and the back sheet. Two layers of film generally have a layer that needs to be cut off by short-wave UV. The back plate itself has a certain resistance to the ultraviolet light intensity of ultraviolet light of 300 nm to 380 nm, but some of the back plate may still undergo yellowing under the irradiation of ultraviolet light, resulting in destruction of the molecular component of the back plate layer, and the whole of the back plate. Performance is degraded, while the reflectivity of the backplane is reduced, affecting the overall output of the component. Therefore, the yellowing of the solar backing film (Fig. 1) also greatly affects the quality of the solar backing, which requires measurement of the yellowing value of the solar backing film.

Figure 1 - Solar back sheet

Jiangsu Photovoltaic Technology Co., Ltd. is a high-tech enterprise engaged in the development, manufacture, sales and application of polyvinylidene fluoride (PVDF) plastic products. The company has independent production technology of fluorine film, PVDF special masterbatch and fluoroplastic products, complete supporting production equipment, technicians have long been committed to the research and development of domestic fluorine products, master the international advanced film production technology, and have a solid theoretical foundation. Excellent research and development capabilities and rich experience. In the product development process, the company has four patents including PVDF membrane technology, PVDF products and special masterbatch technology. In the process of producing solar backing film, the common colorimeter that the company has been using cannot accurately measure the yellowing value of the solar backing film. Therefore, we are looking for the spectrophotometer CS-660 using color spectrum technology (Figure 2). ) to test the product and get accurate values.

Figure 2 - Hangzhou color spectrum spectrophotometer CS-660

Hangzhou Color Spectrum Technology Co., Ltd. independently developed the spectrophotometer CS-660 based on ergonomic new fashion design, low power consumption design, and is a large capacity rechargeable lithium battery configuration, which can simultaneously measure SCI (including mirror surface) Reflective) and SCE (specialized specular reflection) for laboratory, factory or field operation, enabling optimal color measurement in quality control in virtually all applications. At the same time, it integrates a number of technical features and extends the boundary of color quality control in production. The built-in software contains all the necessary color equations, standard light sources suitable for different tasks, and a large number of specific industry and application indicators. Powder test accessories can also be added. It is easy to measure the color of samples such as powders and granules.
The following describes how to use the spectrophotometer CS-660 of Hangzhou Caipu Technology to test the yellowing value of the solar backsheet.
Step 1: First prepare the standard and sample of the solar backing film to be tested (Figure 3);

Figure 3 - Solar backsheet standard and sample

Step 2: Turn on the spectrophotometer CS-660, first perform black and white calibration. After the black and white calibration is completed, press the “Print” button to first position the measurement area and align the standard to be tested with the test hole (see Figure 4). Be careful not to leak light to avoid affecting the test results, then press the “Test” button to complete the measurement after “drop” sound, and check the test results (Figure 5);

Figure 4 - Aligning the standard to the test hole

Figure 5 - Standard test results

Step 3: After the above standard measurement is completed and saved, press the “Menu” button to enter the “Sample Measurement” interface under the standard, and align the sample with the test hole according to the standard measurement method (eg Figure 6), press the “Test” button to measure, “Drop” sound to complete the color difference measurement, and view the measurement results (Figure 7).

Figure 6 - Sample measurement

Figure 7 - Sample measurement results

After the measurement is completed, the yellowing value of the measured solar backing film and the difference between different samples can be seen through the instrument. The accurate data intuitively expresses the quality of the product and can meet the high requirements of the customer for product quality. Thereby improving product quality, ensuring solar cell absorption of sunlight, and increasing the power output of solar photovoltaic modules. I believe that enterprises can achieve long-term development through mutual benefit and win-win cooperation between the two sides!
The products of Hangzhou Caipu Technology Co., Ltd. are widely used in domestic printing, coating, auto parts, metal, home appliances, gold standard test paper, food safety, medical inspection and other industries and scientific research institutions. At the same time, new products are continuously introduced in the development process to expand products. Widely used in all walks of life, the company's unremitting efforts in technology research and development and brand services ensure the stability of the company's products, and is committed to providing customers with the highest quality products and services with leading technology.