Solar street light of the sun's energy is not stable, strong energy by day but at night did not provide energy, and solar street lamps needs to work in the evening, so the solar street light system requirement for battery. Strong basic structure first by solar photovoltaic solar street light
solar energy street light during the day is very strong, but at night without power supply, solar street lamps need to work at night, so the system needs to be equipped with battery solar street lamps. The basic structure of high-power photovoltaic solar street light is mainly composed of solar panels, stents, light, controller, batteries, light pole and the lamp shell. Choice of battery capacity is usually follow the following criteria: first of all, on the premise of meet the night lighting, solar cell module to absorb energy during the day should be stored as much as possible, at the same time electricity to satisfy the requirement of the continuous rainy day and night lighting. Because the factory of Harbin light pole should the capacity of the battery and solar power components, such as light source, lighting design time match. , the battery is too small, cannot meet the requirements, it's not easy and it's too big full, thus affecting the life of the battery, and funds are added together. The solar modules output power should be selected according to the solar lamp light source power, use of time, and to determine the local climate and geographical conditions. In solar energy lamp, performance of charging and discharging controller is indispensable. In order to prolong the service life of batteries, must limit the charging and discharging conditions, in order to prevent the battery overcharge and depth charge. In difference in temperature big place, qualified controller should also has temperature compensation function. Solar controller should have street light control, light control and time control functions, and should have the function of the automatic block load at night, in order to prolong the working hours of street lamp on a rainy day. The lithium battery integrated companies choose street lamp controller is first-line brand in China. At present, the mall is good and bad people everywhere, price competition is more and more intense, lead to the different products. Voltage of about 5 w, voltage is 3. 7 v gesture can only be used in some low power system for lighting requirements is not high or stream of people very little corner, indicating effect. Controller is essentially the same lamp board together, is not waterproof and not rain, but in use process will produce a larger quantity of heat. 3. 7 v system of aluminum plate is usually very low thermal conductivity, heat is not lost in the process of long-term use, result in product damage rate is relatively high. Compared with 12 v system, the power of the lamps and lanterns, lighting and illumination cannot satisfy the requirement of the street lamp lighting. For the same AH lithium battery, 3. 7 v system capacity was only about a third of the 12 v system. If the capacity is low, if the same power, lighting duration will be too short, street lamp lighting effect can not achieve. Currently, the main shopping mall that is commonly used in lithium batteries ternary lithium battery and lithium iron phosphate batteries. Some manufacturers will use high manganese lithium battery. High manganese lithium battery's main advantage is that the price, but its safety performance is poor. Under the environment of high temperature climate, they are most likely to burn. When the 3. 7 v system is used for 30 w, can give a light to increase some of the burden. In a short period of time, the light efficiency and intensity of illumination will be similar to the 12 v system, but the long-term use of will cause a lot of light attenuation. As a result, the service life of lamps and lanterns greatly shortened. Use them in the road lighting system is very undesirable. This is business people treat people irresponsible way. Most of the large domestic controller manufacturers don't make small under 12 v system. Due to the large small system stability is poor, the current, death light and blind light is very prominent. This is not a technical question, it is a question of physical sense. Powerful photovoltaic solar company 12 v lithium ion lamp adopts low voltage high current distributed current structure, protecting the life span of the light source.