"10,000-hour reliability certification for photovoltaic modules, with traditional equipment experiencing light intensity drift exceeding 8% after 3,000 hours, data failure requires rework." "Weather resistance test for building materials, spectral replication deviation leads to the actual service life being 5 years shorter than the test value, resulting in engineering rework losses of tens of millions." "In agricultural photovoltaic research, poor uniformity of light leads to the dispersion of crop growth experimental data." The "two-year delay in the project" - In scenarios such as long-term reliability testing, engineering material verification, and interdisciplinary research, the deep-seated pain points of "insufficient steady-state sustainability, weak industry adaptability, and excessive energy consumption" have plunged countless enterprises and research institutions into a predicament of "repeated investment, out-of-control risks, and lagging progress".
Saifan Optoelectronics has been deeply engaged in optoelectronic technology for 20 years. Based on tens of millions of test data, it has iteratively upgraded and launched a new generation of 3A-level steady-state solar simulators. With three core advantages: "IEC 60904-9 3A full index long-term compliance + xenon lamp/LED dual light source options + industry-customized solutions" It perfectly meets the demands of all scenarios, ranging from short-term detection to long-term testing lasting tens of thousands of hours. Today, this "evergreen tree of light testing" has served over 300 high-end customers worldwide, achieving a 100% efficiency rate for long-term test data, increasing the accuracy of industry-specific tests to 99.8%, and reducing the overall usage cost by 40%. It has become the "trusted choice" in fields such as photovoltaic, building materials, agriculture, and scientific research.
1. Long-term certification of photovoltaic modules: 10,000-hour steady-state no drift, passing the highest level of TUV /UL certification in one go
Mr. Chen, the reliability testing manager of a global TOP3 photovoltaic enterprise, was once extremely troubled by the 10,000-hour long-term certification. "We aim to achieve the highest level of component certification from TUV Rheinland. We need to conduct stable tests for 10,000 consecutive hours. However, after running the traditional simulator for 3,000 hours, the light intensity drift exceeds 8%, and the spectral matching degree drops to grade B. All the 2 million yuan in testing costs and six months invested in the early stage have been wasted." " What is more challenging is that the splicing error in the segmented testing of 210mm + super-large size components makes it difficult for the certification data to be accepted by international institutions.
The "long-term steady-state" core technology of the new generation of 3A-level steady-state solar simulator from Saifan has completely solved the certification problem. The equipment is equipped with the 8th generation steady-state drive system, featuring constant current and constant voltage dual closed-loop control. The current stability is ≤±0.005%, and it is combined with a military-grade dual circulation water cooling system (temperature control accuracy ±0.05℃). After continuous operation for 10,000 hours, the light intensity drift is ≤±1.5%, and the spectral matching degree always remains ≥97%. Far exceeding the requirements of the IEC 60904-9 3A standard. Equipped with a 3.2m×5.0m ultra-large format uniform light system, it can cover 210mm + ultra-large size components at one time, with zero splicing error. The test data has been 100% reviewed by international institutions such as TUV, UL, and IEC.
"Now, the 10,000-hour long-term certification is passed in one go, the component premium has increased by 15%, and the annual new revenue exceeds 600 million yuan." " Engineer Chen introduced that the equipment supports dual light source switching between xenon lamps and LED - the xenon lamp version has a spectrum closer to natural sunlight and is compatible with high-end certifications. The LED version has a lifespan of up to 100,000 hours and is suitable for mass production testing. Customers can choose according to their needs. The intelligent calibration system automatically calibrates every 100 hours and can also be linked with photovoltaic testing software to generate certification reports. "Previously, imported equipment cost 12 million yuan, with a delivery period of 8 months." The customized model of Saifan saves 6 million yuan, with delivery within 45 days. It also offers full technical support throughout the certification process. Domestic equipment has completely broken the international monopoly.
Ii. Weather Resistance Verification of Engineering Materials: Industry-specific spectrum + uniform irradiation, precise prediction of actual service life
Mr. Liu, the R&D director of a large building materials group, once encountered a fatal problem of "disconnection between test data and reality" : The building-integrated photovoltaic (BIPV) panels we developed have a weather resistance lifespan of 15 years as tested in the laboratory. However, after only 8 years of actual installation, yellowing and cracking occurred, resulting in the rework of 12 projects across the country and losses exceeding 120 million yuan. The core problem lies in the fact that the traditional simulator spectrum cannot match the actual application scenarios of building materials, and the irradiation uniformity is poor. The local test data cannot represent the performance of the entire board.
Saifan's industry-customized solutions precisely meet the testing requirements of building materials. The device is equipped with a dedicated spectral library for building materials. It optimizes the energy proportion of the ultraviolet band (300-400nm) for different materials such as BIPV, exterior wall coatings, and door and window glass. The spectral matching degree is ≥98.5%, and the consistency with the actual outdoor lighting conditions exceeds 96%. Combined with distributed multi-point uniform light technology, the irradiation uniformity is ≤±2%, the temperature difference of the entire board material is ≤±0.8℃, and the deviation of the test data of the same batch is ≤1%, which can accurately predict the actual service life of the material.
"Now, the actual service life of BIPV panels deviates from the test value by no more than one year, and there have been no more rework issues." " Engineer Liu introduced that the equipment supports long-term continuous operation and can complete extreme weather resistance tests ranging from 5,000 to 20,000 hours. Combined with rain and sandstorm simulation modules, it can fully reproduce complex outdoor environments. The energy consumption advantage is equally significant: "Previously, the annual electricity cost for six traditional devices was 500,000 yuan, and the maintenance cost was 300,000 yuan." Now, the annual electricity cost for one Saifan Steady-state device is only 80,000 yuan, the maintenance cost has dropped to 40,000 yuan, and it also saves 80% of the laboratory space. The equipment investment can be recovered within three years.
Iii. Interdisciplinary Research Experiments: Flexible regulation + low-noise design to facilitate the implementation of cutting-edge achievements
Professor Wang from the College of Agriculture and Environment of a certain university was once worried about the cross-disciplinary research experiment of photovoltaic agriculture: "We study the growth patterns of crops under photovoltaic panels and need to precisely control the light intensity and spectral composition. However, the traditional simulator light emphasizes a coarse node step size (5%), and the spectrum is fixed and unadjustable, which leads to the dispersion of the crop photosynthetic efficiency test data and delays the project by two years." What's more troublesome is that the operating noise of the equipment exceeds 70dB, which affects the growth environment of plants. Moreover, the small light spot splicing leads to uneven lighting on the pilot platform, making it impossible to scale up the experiment.
The research customization version of Saifan's 3A-level steady-state solar simulator makes cross-disciplinary research smoother. The equipment supports continuous adjustment of light intensity with an accuracy of 0.1%, and independent control of ultraviolet, visible and near-infrared bands (with an accuracy of 1%). It can simulate the lighting environment under different light transmittance rates of photovoltaic panels, and is suitable for various scientific research scenarios such as crop growth, photocatalysis and photoelectric conversion. Adopting low-noise light source driving technology, the operating noise is ≤55dB, close to the background noise of the laboratory, and does not interfere with the growth of organisms or the operation of precision instruments.
Now we have successfully developed the optimal lighting solution for photovoltaic agriculture. Last year, we published three papers in top SCI journals and applied for four national invention patents. After the project was implemented, the income per mu increased by 2,000 yuan. Professor Wang praised that a single unit of the equipment can cover a 200-square-meter pilot platform, with a light uniformity of 97%, and the repeatability of experimental data has been increased from 65% to 99%. "Through the upper computer software, the light change curve can be preset, and it can be linked with temperature, humidity, and CO₂ sensors to achieve closed-loop control. Previously, it required four people to take turns operating Now, one person can complete the entire process of the experiment. More surprising energy consumption: The annual electricity cost for 30 traditional small light spot devices is 400,000 yuan, while that for 1 Saifan steady-state device is only 50,000 yuan, saving 350,000 yuan in electricity costs annually.
Iv. Core Technology Revelation: Why Can It Achieve a Dual Breakthrough of "Long-Term Stability + Industry Adaptation"?
The core competitiveness of Saifan's new generation of 3A-level steady-state solar simulator stems from four industry-leading technologies:
Dual-light source steady-state architecture: Xenon lamp/LED dual light sources are available, both meeting the 3A full index long-term compliance. The spectral matching degree of the xenon lamp version is ≥98%, and the lifespan of the LED version is 100,000 hours, adapting to the cost and precision requirements of different scenarios.
8th generation steady-state drive technology: Constant current and constant voltage dual closed-loop control, current stability ≤±0.005%, dual-circulation water-cooling system temperature control accuracy ±0.05℃, light intensity drift within 10,000 hours ≤±1.5%.
Industry-customized spectral library: Built-in dedicated spectral solutions for photovoltaic, building materials, agriculture, scientific research, etc. It can fine-tune the band proportion according to needs to meet the testing standards of different industries.
Ultra-large format uniform light system: Maximum format of 3.2m×5.0m, PTFE integrating sphere reflectivity ≥99.6%, aspheric condenser after 300,000 optical simulations, uniformity ≤±2%, no edge distortion.
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