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What is the design principle of solar street lamp outdoor?


Published by Mars July 06,2020

         With the increasing scarcity of the earth"s resources, the investment cost of basic energy is rising, and solar energy is increasingly valued as an inexhaustible and inexhaustible source of safety and environmental protection. At the same time, with the development and progress of solar photovoltaic technology, the application of solar street lamp outdoor products in environmental protection and energy saving, solar street lamp outdoor, garden lights, lawn lights and other applications have gradually formed scale.

                                            solar panel street lamp

         The solar street lamp outdoor consists of the following components: solar panels, solar controllers, battery packs, light sources, poles and fixture housings. Solar panels are the core part of solar street light lamp. Their function is to convert the solar radiation capacity into electrical energy or to store it in a battery. Among the many solar cells, single crystal silicon solar cells, polycrystalline silicon solar cells, and the like are more common and practical. In the eastern and western regions where sunlight is abundant, it is better to use polycrystalline silicon solar cells because the production process of polycrystalline silicon solar cells is relatively simple and the price is lower than that of single crystal. In the southern regions where there are more rainy days and less sunshine, it is better to use monocrystalline silicon solar cells because the performance parameters of monocrystalline silicon solar cells are relatively stable.

                                           solar panel street light

           Regardless of the size of the solar luminaire, a good performance charge and discharge controller is essential. In order to extend the life of the battery, its charging and discharging conditions must be limited to prevent overcharging and deep charging of the battery. In places with large temperature differences, qualified controllers should also have temperature compensation. At the same time, the solar street light lamp controller should have the function of street light control, with light control and time control functions, and should have the function of automatic cutting and controlling load at night, which is convenient for extending the working time of street lamps in rainy days. Since the input energy of the solar photovoltaic system is extremely unstable, it is generally necessary to configure the battery system to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. The choice of battery capacity generally follows the following principles: First, the energy of the daytime solar cell module is stored as much as possible while meeting the nighttime illumination, and at the same time, it is also necessary to store the electric energy required for the nighttime illumination of the continuous rainy day. If the battery capacity is too small, it can not meet the needs of night lighting. The battery is too large. On the one hand, the battery is always in a deficient state, which affects the battery life and causes waste. The battery should match the solar battery and the street light. A simple way to determine the relationship between them. The solar cell power must be more than 4 times higher than the load power for the system to work properly. The voltage of the solar cell should exceed 20~30% of the working voltage of the battery to ensure normal negative charge to the battery. The battery capacity must be more than 6 times higher than the daily load of the load.

                                                solar panel street light

        Generally, solar street light lamp use LED light sources. LED light source, long life, up to 100,000 hours, low operating voltage, with the advancement of technology, LED performance will be further improved. The height of the pole should be determined according to the width of the road, the spacing of the lamps, the illumination standard of the road. According to the collection of many foreign solar light materials, most of the lighting and heat saving are selected. Most of them choose energy saving. The appearance requirements of the lamps are not high, so it is relatively practical.


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