What factors will affect the future development of solar street lights?

Soon after solar cells entered the stage of use, they began to be used in the field of lighting. In my country, solar cells have been used on navigation marks as early as the early 1970s. In recent years, not only the clean and environmentally friendly energy of solar street lights has been familiar to the public. Solar garden lights and landscape lights are also widely used, and solar street lights have also entered people's attention. The advantages of solar lighting without cables, no consumption of conventional energy and long service life have been widely recognized by the society. Many areas, including some rural, urban and western areas, have promoted the use of solar street lights, and have received certain praises. However, many industry experts also pointed out some notable issues. 1. The related technology is lacking Although the use of solar lighting system devices has become more and more widespread, there are still some problems in the power, light efficiency and service life of solar street lamps. According to the survey, for rural roads with narrow roads and low lighting requirements, low-power solar street lights can meet the requirements; but for cities with high street lighting requirements, solar street lights still have a learning point: light coverage Low, the brightness is uneven. Some of the solar street lights that have been piloted and used in Zhuhai before, some relevant personnel said that the current technical indicators of solar street lights, its illuminance cannot fully meet the requirements of losing the main road, so most cities still will not use solar street lights to replace the original ones. Some main road lights. In addition, the service life of solar panels also restricts the promotion and use of solar street lights. According to previous surveys, the conversion rate of solar panels is low and the cost is high. If you want to keep the lights on for a longer time, you should improve the configuration and match the components reasonably, instead of simply increasing the battery capacity. In addition, if solar street lights are to be used more widely, in addition to considering the photoelectric conversion efficiency of solar panels, local solar radiation time and atmospheric dust should also be considered. 2. Environmental pollution problem The biggest advantage of solar street light is that it is the cleanest solar energy, and each street light has a small generator. However, at present, the batteries used in solar street lamps are mainly lead-acid batteries, which are mainly composed of lead, sulfuric acid and some other metals and plastics. The acid solution of waste batteries contains a large amount of lead, and random discharge will not only seriously pollute the soil and Water sources will cause damage to the air and ecological balance, and also cause diseases of human metabolism and nerves. At present, the recycling of waste products in China is still in a relatively disordered state, so many lead-acid batteries that have been used and scrapped are polluting our living environment. In the research and development of solar lighting products, it is necessary to consider many aspects to reduce the pollution of the products to the environment. Relevant industries should speed up technological innovation and realize the recycling of polluting batteries as soon as possible, otherwise it will have a serious impact on our living environment and the solar street light industry. 3. Post-maintenance should be paid attention to At present, many regions are piloting the promotion of solar street lights, especially in the construction of new rural areas in some places, solar street lights are used in large quantities. Because the average life of the battery used in solar street lights is 500 times of charge and discharge [7]. Compared with ordinary street lights, solar street lights have a relatively large initial investment and relatively high maintenance costs. They need to be replaced every one and a half to two years, and the cost is about one-third of the initial investment cost. In addition, the light source is damaged. need to be replaced later. Therefore, after the solar street light project is completed, it is not a one-time thing to install the photovoltaic lighting system in place.