Solar street lamps to buy, use and maintenance of knowledge collection ( 3) The sun

Solar panels are the most important parts of solar street lights, also affect the cost of solar street lamps system of one of the key components. He converts the sun's radiant energy into electric energy, stored in sent to the storage battery is a source of energy for solar street lamps, it is by the

solar panel is the most important parts in solar street lamps, also affect the cost of solar street lamps system of one of the key components. He will be the sun's radiant energy into electricity and store it into the battery. It is the energy of solar street light. It consists of toughened glass, EVA, battery slice, the back, the aluminum alloy frame, junction box, such as silicone materials. According to the material and performance, it can be divided into crystalline silicon panels, amorphous silicon panels, chemical fuel panel and flexible solar cells. Crystalline silicon solar cells are more commonly used in solar street light system. Stability of monocrystalline silicon solar cell performance parameters, the photoelectric conversion efficiency is high, suitable for the southern rainy, relative shortage of rizhao area. Polycrystalline silicon solar battery material is easy to make, save power consumption, the total production cost is low, the photoelectric conversion efficiency is slightly low, suitable for use in sunny, sunshine good region. Is developing rapidly at present, a new type of flexible thin film solar cells are constantly improve performance, and applied to the solar street light system. It does not need to use glass back and cover plate, the weight of the flexible thin film solar cell is 80% lighter than double deck glass solar energy battery components. Use PVC back and ETFE membrane cover plate of the flexible thin-film solar cells can even random bending, easy to carry. Do not need special support when installation, can be easily installed on the roof and use on the top of the tent. The working voltage of the solar cell is an important parameter in the design of solar panels. In general, the working voltage of the solar cell battery voltage of 1. 5 times, to ensure the normal charging of battery. For example, the 6 v battery charging need 8 ~ 9 v solar cells, to the 12 v battery charging need 15 ~ 18 v solar cells. For 24 v battery needs 33 ~ 36 v solar cells. Finally, you need to determine the solar street light system is the output power of solar panels Wp in standard solar lighting, the 10 l standards set by the European commission, 1000 watts per square metre of radiation intensity and atmospheric quality AM1. 5, battery temperature 252 ℃ under the condition of the output power of solar cells. The same power output of the solar cell is different in different time and different locations. 。 Solar panels are usually consists of multiple series of solar battery, the capacity depends on the lighting source, line transmission components and the total power of local solar radiation energy consumption. The output power of solar cell stack should be greater than 3 ~ 5 times of the light source power; Reference data tables - 1 China sunshine condition in different areas of the regionalism rich regions rich regions available regional poverty area annual total radiation ( Kilojoules per square centimeters) 。 Year) Acuity in 580500 ~ 580420 ~ 500, 420 or less western Inner Mongolia, western gansu, southern xinjiang, northern xinjiang, northeast qinghai-tibet plateau, eastern Inner Mongolia, north China, shaanxi, ningxia, gansu, the eastern qinghai-tibet plateau, hainan and Taiwan northeast, hulunbuir, Yangtze river, fujian, guangdong, guangxi, guizhou, yunnan, shaanxi, henan, chongqing, sichuan, guizhou, guangxi and jiangxi parts of consecutive rainy days sunshine 3000 hours or more percentage 0 or 2375 features. In 75, sunshine percentage 0 2400 ~ 3000 hours. 6 0. 7 years, sunshine time of 1600 ~ 2400 hours