What are the shortcomings of solar street light at present?

It is possible that the technicians who produce LED lighting do not have enough understanding of switching power supplies, so the power supply can work normally, but some key evaluations and electromagnetic compatibility considerations are not enough, and there are still certain hidden dangers. Most LED power supply manufacturers have transformed from ordinary switching power supplies to make LED power supplies, and they do not have enough understanding of the characteristics and use of LEDs; there are almost no standards for LEDs at present, and most of them refer to the standards of switching power supplies and electronic rectifiers; Now most of the LED power supplies are not unified, so most of them are relatively small. The purchase volume is small, the price is high, and the component suppliers are not very cooperative; the stability of the LED power supply: wide voltage input, high temperature and low temperature operation, over temperature, over voltage protection and other issues have not been solved one by one. The first is the overall life of the drive circuit, especially the life of key components such as: the life of the capacitor at high temperature directly affects the life of the power supply; it is the LED driver that should challenge higher conversion efficiency, especially when driving high-power LEDs, because All the power that is not used as light output is dissipated as heat, and the power conversion efficiency is too low, which affects the energy-saving effect of LEDs; at present, in applications with low power (1-5W), the cost of constant current drive power The proportion is close to 1/3, which is close to the cost of the light source, which affects the market promotion to a certain extent. With the increasing application of LEDs, the performance of LED drive power will be more and more suitable for the requirements of LEDs.