Luminous flux attenuation is a key indicator for determining LED lifetime. The US Energy Star (ES) reduces the lumen maintenance of LED lighting products to less than 70%, which is defined as the end of life of LED lighting products. The US Energy Star proposes to measure the lumen maintenance rate of 6000 hours at 25 °C ± 1 °C and infer the lifetime of LED lighting products (6000 hours luminous flux maintenance rate is not less than 91.8%). Compared with the development of LED lighting technology and the speed of product upgrading, the test time of 6000 hours (or above) is still too long to meet the requirements of rapid industrial development. The development of a fast reliability test method for life assessment of LED lighting products has become a critical issue for the industry. In response to this problem, the National Key Laboratory of Semiconductor Lighting and Innovation has developed a "Test Method for Accelerated Attenuation of Luminous Output of CSA020 LED Lighting Products" after two years of research. Based on the experimental methods of ENERGY STAR, LM-79, LM-80H and TM-21, CSA020 proposes a theoretical basis based on the "e-index model", "Arrhenius acceleration model" and "Poisson distribution". A new accelerated decay test method: further reducing test time by increasing the ambient temperature during the test (to increase the junction temperature of the LED). Under the recommended test conditions of a maximum temperature of 55 ° C, data within 2000 hours can be used to replace the 6000 hours of data at room temperature required by the ES method. This method not only shortens the traditional 6000-hour test time to 2000 hours, but also maintains the quality and precision of the ES method. Fan Xuejun said that the feasibility and rationality of the accelerated attenuation test method adopted by the standard was not only proved theoretically, but also verified by the actual test data of LED lighting fixtures. At present, CSA020 has been discussed and consulted by more than 400 members of the National Semiconductor Lighting Engineering R&D and Industry Alliance. It has been voted by more than 80 official members and officially released, and gradually in the domestic testing institutions. Promote the application. As a test method to quickly determine the life of LED lighting products, it will better support the national finance Outdoor Trolley Power Supply,Solar Energy Storage,Outdoor Charging Station,Outdoor Storage Battery Sichuan Liwang New Energy Technology Co. , https://www.liwangnewenergy.com