Sunfree Lighting Limited is a high-tech company specialized in R&D and production of solar LED lights and LED lighting.

Do you know the led ( Light emitting diode) Street lamps and the led lights are in the system

by:SUNFREE     2021-02-12
Main component of LED street lamp: solar panels, street lamp, controller and battery charging and discharging. LED lights factory it is a solid cold light source, green pollution-free, less power consumption, high photosynthetic efficiency, long life, therefore, the LED street light will become the best choice of the road lighting energy saving reconstruction. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. Its working principle is that in the daytime, photovoltaic panels by radiation absorption of solar radiant energy, produce electromotive force, an electrical current, and through the controller to be filling the battery charging and discharging. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. When the current is lower than 6 amps, the system think at the moment the sun already exists. When it falls, the controller will stop charging and started to enter the discharge mode, released from the battery power to the lamp. At this point, the lamp can light up. The design of the led street lamp system there are several key points. First of all, luminous flux and lamp power. Second, turn on the light the length of time every night. Because each place is different, different or owner, or the application environment is different, every night the requirements of the length of the light and the dimming curve is also different. 3 it is the requirement of the continuous rainy days. Continuous rain, refers to the there is no charge for rainy days. Simply put, if you pull the plug of the photovoltaic panels, battery charge when the number of days can work at full capacity. Four is where is the application of solar radiation resources in this area, as well as the best illumination Angle. Through the analysis of I, my goal is to share with you this today, so you can learn a lot about how do led street light system, configuration is calculated. The first lamp is a power supply. Suppose every 30 w, light time, 5 hours, 100% 50% 5 hours. Means that all the power is 7 day. 5 hours. Three consecutive cloudy day need to support. 。 Choose at present more popular 12. 8 volts lithium iron phosphate battery. 。 First of all, calculated daily consumption of electricity. Full power every 30 W, full power 7 hours a day, in a period of 30 x 7 hours, the mean daily consumption of 210 watts, at 12. 8 v system, the capacity of the battery is 16. 4. But it must pay attention to 12. 3 8 v, because it is now a lot of use. 2 volts. As we know, 210 watt hour, that is, 12. 8 volts of 16. 4 am hours, it is the energy consumption of every day, if you need two to three days in a row, this means that the 630 watt hour. Considering the depth of discharge of lithium-ion batteries. Assuming that 100 - watt hour discharge, is impossible to release 100 watt hour. Maximum emissions by 90%, so consider emissions 90% of depth. Because the battery is low, the battery will be through the cable to the light. There will be some loss, wire loss, assuming that 10% of the wire loss, so the 630 w is 0. 9 is removed. We have 778 watts. The capacity of battery capacity, we need to make the system configuration. Let's take a look at the capacity of photovoltaic panels fast calculation. We just calculated that if the capacity of the photovoltaic panels calculated at 210 watt hour every day, so the capacity of the photovoltaic panels will one day need charging conditions, that is to say, the daily electricity consumption is 16. 4 ampere hour. According to the available around the sunshine time difference, assuming available sunshine time, effective time for 4 hours. 16. 4 ampere hour is equal to 4 divided by four hours.
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