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Solar LED lights

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Edit this paragraph Profile
LED light energy-saving, high luminous efficiency, the unit can produce 80LM W or even higher luminous flux. The color is good, pure white light, all visible light. Other most important thing is to use DC drive, on this point in solar energy particularly important because the electricity is solar DC, this part of the inverter can save costs and energy consumption. Solar LED Street Light takes solar energy, charging during the day and night use, without complex and expensive pipeline laying, can be adjusted layout of lighting, security, clean energy, without manual operation stable and reliable, maintenance-free electricity savings. System consists of components in solar cells (including bracket), LED lamp, the control box (with a controller, battery) and the poles of several parts;
Edit this paragraph system basically consists
Solar LED lights part of the main components of the solar cell (including bracket), LED lamp, the control box (with a controller, battery) and the poles of several parts; luminous efficiency of solar panels to 127Wp/m2, efficient, and system design is very favorable wind; LED lamp light source with single powerful LED (30W-100W) as a light source, using a unique multi-chip integrated single-mode for the light source design, selection of imported high brightness chips. Control box with stainless steel as a material box, beautiful and durable; control box placed on maintenance-free lead-acid batteries and charge-discharge controller. The system selected valve-regulated lead-acid batteries, because of its minimal maintenance, it is also known as "maintenance-free battery" will help reduce the cost of system maintenance; charge and discharge controller is designed to take into account the full-featured (with photo control, time control, overcharge protection, over discharge and reverse polarity protection, etc.) and cost control, to achieve a very high price.
Edit this paragraph system design
Solar street lamp solar lighting design and general compared to the same basic principle, but the need to consider links more. Photosynthetic solar power LED below lights, for example, in several areas for analysis. Solar cell module selection design requirements: Sanmenxia area, the load input voltage 24V power 34.5W, daily working hours 8.5h, to ensure that the number of consecutive rainy days 7 days. ⑴ Sanmenxia area nearly two decades the average annual radiation 107.7Kcal/cm2, by simple calculation, the peak sunshine hours in Changsha about 3.424h; ⑵ load at the required power consumption = = 12.2AH ⑶ Changsha, the total charge photosynthetic solar modules current = 1.05 × 12.2 × ÷ (3.424 × 0.85) = 5.9A where the number of days between two consecutive rainy days for the design of the shortest 20 days, 1.05 to Henan China solar module photovoltaic technology systems integration loss coefficient, 0.85 for the battery charging efficiency. ⑷ photosynthetic solar modules for at least the number of total power = 17.2 × 5.9 = 102W peak output power selection 110Wp, a single block 55Wp standard battery components, should be able to ensure the street system in most cases, the normal year of operation.
Edit this paragraph battery selection
Calculation of design capacity battery compared to the peak wattage of solar modules to be simple. Based on the above calculation that the load on power consumption 12.2AH. In the case of the battery is full, can work seven rainy days, coupled with the work of the first night, the battery capacity: 12.2 × (7 +1) = 97.6 (AH), 2 sets 12V100AH ​​selected to meet the requirements of the battery .
Edit this paragraph LED light source
LED light source of business more beautiful, but because of the mixed enterprise technology, so the product's performance is different, especially the brightness and light decline, relatively large difference between life, the following high-power LED lamps to introduce to you to do in the selection of related products reference.
Material
Vacuum coating reflector; high-purity aluminum reflector, light housing and heat sink; high-strength tempered glass; high-power LED light source; high efficiency constant current source.
Application areas
City streets, pavements, squares, schools, parks, gardens, residential areas, factories and other needs of outdoor lighting.
Special Features
1, the use of proprietary single powerful package of LED (30W-100W) as a light source, using a unique multi-chip integrated single-mode for the light source design, selection of imported high brightness chip; 2, the first one radiator and lamp shells design, LED is closely connected directly with the shell, shell heat through convection heat and air wing, and fully guarantee the service life of 50,000 hours LED lights. By working 12 hours per day, more than 10 years of their life also, very low maintenance costs; 3, light surface corrosion-resistant UV treatment, high temperature resistant silicone foam seal, dust and water effectively, to achieve the overall lighting protection IP65 rating; 4, with single elliptical aluminum reflector cavity, with the multi-surface reflector, vacuum coating, targeted control of the LED light from within the need to improve the lighting effect of the light uniformity and light energy utilization, highlight the advantages of better energy-saving LED lights. Compared with traditional sodium lights, can save more than 70%; 5, no adverse glare, no strobe. Eliminate the adverse ordinary lights glare caused by glare, visual fatigue and visual interference, improve driving safety; 6, start without delay, power that is of normal brightness, without waiting for, eliminating the long time start process of traditional street lights; 7 , Environment friendly: no lead, mercury and other pollution elements, no pollution to the environment; 8, combined with solar energy is a perfect partner, give full play to work with low voltage LED current advantages of energy saving, solar photovoltaic panels and LED light source combining the best price for customers and high reliability.
Edit this paragraph solar modules
Solar lights solar panel is the core part of the solar street lights in some of the highest value. Its role is to convert the sun's radiation into electricity, stored in batteries or sent. Among the many solar cells in general and more practical than a single crystal silicon solar cells, polycrystalline silicon solar cells and three kinds of amorphous silicon solar cells. Good enough sunshine in the sun east and west areas, the use of polycrystalline silicon solar cells as well, because the polycrystalline silicon solar cell production process is relatively simple, the price is lower than the single crystal. More rainy days in the sun relative to the south is not very adequate, the use of single crystal silicon solar cells as well, because the performance parameters of single crystal silicon solar cells is relatively stable. Amorphous silicon solar cells in the absence of sufficient sunlight outside is better, because the amorphous silicon solar cells requires the sun is low light conditions. Huayu new energy conversion efficiency of silicon is relatively high, glass light performance, increase their conversion efficiency.
Edit this paragraph solar panel bracket
1) The angle designed to make solar modules in the year received solar radiation as much as possible, we want to choose the best solar cell module angle. The best angle on the solar cell module of the problem in recent years appeared in a number of academic journals for quite a few. The lights used for the Changsha region, according to this design reference data in the literature, selected Changsha photosynthetic solar cell module bracket inclination 16o. 2) The wind-resistant design in the solar street lighting system, the structure of a very important issue is the need to wind-resistant design. Wind-resistant design is divided into two blocks, one for battery components stent wind-resistant design, two for the poles of the wind-resistant design. The following two were done according to the above analysis. ⑴ solar wind component stent battery components manufacturers design basis information on the technical parameters of the solar cell module to withstand the wind pressure was 2700Pa. If the wind factor selected for the 27m / s (equivalent to ten typhoons), according to non-viscous fluid, battery components to withstand the pressure only 365Pa. Therefore, the component itself is completely under 27m / s wind speed and will not destroy the the. Therefore, the design of key components to consider is the battery bracket and pole connections. In this set of lights in the design of the system components support the battery connection poles designed for use with the rod bolts fixed connection. ⑵ street lamp poles in the wind-resistant design parameters are as follows: solar panel angle A = 16o Pole height = 5m poles at the bottom of the design selected Weld width δ = 4mm diameter = 168mm pole seam where the bottom surface of the light pole damage surface. Failure surface resistance moment W pole calculation point P to the role of the poles of the battery plates by the role of the line load F distance PQ = [5000 + (168 +6) / tan16o] × Sin16o = 1545mm = 1.545m. Therefore, the wind load effect of surface damage in the pole moment M = F × 1.545. According to 27m / s maximum allowable wind speed design, 2 × 30W dual-photosynthetic solar street lamp panels Changsha basic load of 730N. Consider the safety factor of 1.3, F = 1.3 × 730 = 949N. Therefore, M = F × 1.545 = 949 × 1.545 = 1466N.m. According to mathematical deduction, annular sliding surface resistance moment W = π × (3r2δ +3 rδ2 + δ3). Above formula, r is the ring diameter, δ is the ring width. Failure surface resistance moment W = π × (3r2δ +3 rδ2 + δ3) = π × (3 × 842 × 4 +3 × 84 × 42 +43) = 88768mm3 = 88.768 × 10-6 m3 wind load in the destruction of the surface effect of moment due to stress = M / W = 1466 / (88.768 × 10-6) = 16.5 × 106pa = 16.5 Mpa <<215Mpa of which, 215 Mpa flexural strength of steel is Q235. Therefore, the design meet the requirements of the selected weld width, as long as the welding quality can be guaranteed, the poles of the wind is no problem.
Edit this paragraph Solar Controller
Solar Charge Controller's main role is to protect the battery. Basic functions must have overcharge protection, over discharge protection, light control, time control and anti-reverse and so on. Battery against over charge, over discharge protection voltage general parameters in Table 1) when the battery voltage reaches the set value after the change in state of the circuit. In the selection of devices, there are currently using SCM, but also by the comparator, the program more, have their own characteristics and advantages, should be based on the needs of customers corresponding characteristics of the selected program. 2) The electrostatic surface coating products using new technologies to FP-based paint professional building materials, colors and surface of products to meet environmental requirements coordinated, while products with high self-cleaning, strong corrosion resistance, aging resistance, suitable for any climate and environment. Design process based on hot-dip zinc coating, greatly improved the product performance to achieve the most stringent requirements AAMA2605.2005, other indicators have met or exceeded the relevant requirements of GB.
Edit this paragraph comparison
1, solar panels
Solar lights solar panel is the core part of the solar street lights in some of the highest value. Its role is to convert the sun's radiation into electricity, stored in batteries or sent. Among the many solar cells in general and more practical than a single crystal silicon solar cells, polycrystalline silicon solar cells and three kinds of amorphous silicon solar cells. Good enough sunshine in the sun east and west areas, the use of polycrystalline silicon solar cells as well, because the polycrystalline silicon solar cell production process is relatively simple, the price is lower than the single crystal. More rainy days in the sun relative to the south is not very adequate, the use of single crystal silicon solar cells as well, because the performance parameters of single crystal silicon solar cells is relatively stable. Amorphous silicon solar cells in the absence of sufficient sunlight outside is better, because the amorphous silicon solar cells requires the sun is low light conditions.
2, solar controller
No matter the size of solar lamps, a good charge and discharge controller performance is essential. In order to extend battery life, its charge and discharge conditions must be limited to prevent over charge and depth charge the battery. In the large temperature difference, the controller should have qualified temperature compensation. At the same time both solar street lamp controller should control, with light control, time control function, and should have control of the load function automatically cut the night, easy to extend the rainy day street working hours.
3, battery
Since the input of solar energy photovoltaic power generation system unstable, so in general need to configure the battery system to work. Generally lead-acid battery, Ni-Cd batteries, Ni-H batteries. The choice of battery capacity generally follow the following principles: First, to meet the premise of the night lighting, the solar modules during the day and store it as energy, but also can store the night lighting to meet the needs of consecutive rainy days in power. Battery capacity is too small not to meet the needs of night lighting, battery is too large, on the one hand always in the loss of battery power status, affect the battery life, also causing waste. Batteries should be solar cells, electrical load (lights) to match. Used a simple method to determine the relationship between them. Solar power must be 4 times higher than the load power over the system to work properly. Solar battery voltage exceeds the battery voltage to 20 to 30%, in order to ensure the normal negative charge to the battery. Battery capacity must be higher than the consumption of the load at more than 6 times better.
4, light source
Solar street light with solar lighting which is an important indicator can be used normally, the general solar lighting using low energy saving lamps, low pressure sodium lamp, lamp, DLED source. (1) Low energy-saving lamps: low power, high light efficiency, but the service life of 2,000 hours, low voltage lamp black, generally suitable for solar lawn light, garden light. (2) low pressure sodium lamps: low pressure sodium lights with high efficiency (up to 200Lm / w), subject to the inverter, low pressure sodium expensive, making the system highly, with less. (3) discharge lamp: low power, high light efficiency. The lights in 220V (pure sine wave, frequency 50 Hz) under normal use of electricity, up to 50,000 hours life, life in the solar lights on and the general energy-saving lamps significantly reduce the almost (because solar lighting is a square wave inverter , solar power 220V output frequency, term position, voltage is not compared and the general city electricity).
Edit this paragraph other
With the growing shortage of conventional energy, solar energy will be more widely applied, particularly in the field of solar power in just a few years time, has developed into a sunrise industry mature. 1: the application of solar power is currently restricted part of one of the most important is the price of solar energy to a two-way street, for example, a total of two loads of 60 watts, (the Yangtze River and effective light 4.5h / day, night Discharge 7 hours, increasing the amount of solar panels 20% reserve basis) of its need to 160W solar panel about 30 yuan per watt basis, the cost of solar panels necessary to 4,800 yuan, plus the cost of batteries 180AH are about 1800 so, the whole street into a one-time cost is much higher than the circuit city lights, solar street light field caused a major bottleneck. 2: The battery life should consider the application in the entire street lighting system, the general battery warranty of three years or five years, but generally the battery in a year or even six months after the charge will appear dissatisfied with the situation, some of the actual charge rate may drop to 50%, which will affect the period of consecutive rainy days normal lighting at night, so I chose a better battery is particularly important. 3: Some engineering companies are often used as a solar street light LED lighting, LED lights, but poor quality of layers missing, LED light serious decline six months is likely to decay 50% of the illumination. So be sure to choose a slower decline LED light lamp, or use electrodeless lamp, low pressure sodium lamp and so on. 4: the choice of the controller is also often overlooked is a problem in engineering business, the controller layer of poor quality and missing, 12V/10A controller market price of 100-200 per month, while the value of the entire streetlight system in the smallest some, but it is a very important link. Controller will have a direct impact on solar streetlight system component life, and the purchase cost of the entire system, one: should choose a low-power controller, the controller work 24 hours a day, as it's own power is greater, will consume some power, the best choice for power in the 1 mA (MA) under control. Second: To select high efficiency charge controller with MCT charge mode controller can automatically track the maximum current of solar panels, especially in the winter or periods of insufficient light, MCT charge mode about 20% higher than the efficiency. C: should be selected with a two-way adjustable power controller, the controller has a power adjustment has been widely promoted, few pedestrians at night time can be automatically shut down one or two light, saving electricity, you can adjust for power LED lamps . In addition to the above selected power-saving features, it should also focus on batteries and other components of the controller protection features, such as a trickle charge mode of the controller can well protect the battery, increasing battery life, the other to set the controller undervoltage protect the value, try to protect the value of the transferred voltage in ≥ 11.1V, to prevent battery over discharge. 5: a place far away from the city should also pay attention to security work, a lot of business because of the construction project oversight, there is no effective anti-theft, lead batteries, solar panels and other components were stolen, not only affects the normal lighting, but also caused unnecessary damage to property. Mostly currently works as a theft case, battery, battery buried pouring cement is an effective anti-theft measures in the light pole is best to install the battery box to be welded reinforcement. 6: waterproof controller, the controller usually installed in the lamp, battery boxes, in general, not water, but in practical cases, the controller cable terminals often because of rain along the cable into the controller, causing a short circuit. Therefore, it should be noted in the construction of the internal cable bent "U" shaped and solid type, the external connector can also be fixed for the "U" type, so the rain can not cause the controller Drizzle short, while also including an outside Apply waterproof glue interface. 7: Among the many practical applications of solar lights, solar street lights in many places can not meet the normal lighting needs, especially in the rainy days even more prominent, in addition to using the related components of poor quality, another major reason is that blindly reduce the group parts cost, not the design configuration according to demand, reducing the use of solar panels and battery standards, resulting in cloudy days can not provide street lighting. Here are solar panels and batteries configured formula: a: First calculate the current: as: 12V battery system; 30W lamp 2, a total of 60 watts. Current = 60W ÷ 12V = 5 A two: calculate the battery capacity needs: such as: street lighting, night time, the need for total full load 7 hours (h); (such as open 8:00 pm, 11:30 off a Road the night, 4:30 am open 2-way, closed 5:30 am) need to meet the continuous rainy days 5 days lighting needs. (Rainy days plus 5 days of lighting the night before, namely, 6 days) Battery = 5A × 7h × (5 +1) days = 5A × 42h = 210 AH another in order to prevent battery overcharge and over discharge, charging the battery to 90% of the general ; discharge the remaining 20%. Therefore, the application 210AH only about 70% of the real standard. Three: calculate the peak demand for solar panels (WP): lights night time lighting needs total of 7 hours (h); ★: solar panels per day subject to effective illumination time was 4.5 hours (h); at least relax the solar panels set aside 20% of the amount of demand. WP ÷ 17.4V = (5A × 7h × 120%) ÷ 4.5h WP ÷ 17.4V = 9.33 WP = 162 (W) ★: 4.5h time of day, light areas near the Yangtze River sunshine factor. Another component in the solar street light, line loss, the loss of control, and ballast, or constant current power sources are different, the practical application may be about 5% -25%. So 162W is only theoretical value, based on the actual situation requires an increase in

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