The solar street light system can guarantee normal work in rainy weather for more than 15 days! Its system is composed of LED light source (including drive), solar panel, battery (including battery incubator), solar street light controller, street light pole (including foundation) and auxiliary material wire.
Solar cell components generally use monocrystalline silicon or polycrystalline silicon solar cell components; LED lamp holders generally use high-power LED light sources; The advanced controller also has the function of adjusting the lighting time in four seasons, half-power function, intelligent charging and discharging function, etc.; the battery is usually placed underground or there will be a special battery insulation box, which can use valve-regulated lead-acid batteries, colloidal batteries, Iron-aluminum batteries or lithium batteries, etc. Solar lamps work fully automatically without trenching and wiring, but the lamp pole needs to be installed on the embedded parts (concrete base). 1. High luminous efficiency, low power consumption, long service life and low working temperature.
2. Strong safety and reliability.
3. Fast response, small unit size, green and environmental protection.
4. Under the same brightness, the power consumption is one-tenth of incandescent lamps and one-third of fluorescent lamps, but the life span is 50 times that of incandescent lamps and 20 times that of fluorescent lamps, which is after incandescent lamps, fluorescent lamps, and gas discharge lamps. The fourth generation of lighting products.
5. The advent of a single high-power ultra-brightness LED makes it possible for the LED application field to enter the high-efficiency lighting source market, and will be one of the greatest inventions of mankind since Edison invented the incandescent lamp. 1) Inclination design
In order to allow the solar cell module to receive as much solar radiation as possible throughout the year, we need to choose an optimal inclination angle for the solar cell module.
The discussion on the optimal inclination angle of solar cell modules is used in different regions and depends on different regions.
2) Wind-resistant design
In the solar street light system, a structural issue that requires great attention is the wind resistance design. The wind resistance design is mainly divided into two parts, one is the wind resistance design of the battery module bracket, and the other is the wind resistance design of the light pole. Let’s analyze the above two parts separately.
⑴Wind-resistant design of solar cell module support
According to the technical parameter data of the battery module manufacturer, the windward pressure that the solar battery module can withstand is 2700Pa. If the wind resistance coefficient is selected as 27m/s (equivalent to a tenth-level typhoon), according to non-viscous fluid mechanics, the wind pressure of the battery module is only 365Pa. Therefore, the component itself can fully withstand the wind speed of 27m/s without damage. Therefore, the key thing to consider in the design is the connection between the battery module bracket and the light pole.
In the design of this set of street light system, the connection between the battery component bracket and the light pole is designed to be fixedly connected by bolts.
⑵Wind-resistant design of street light poles
The parameters of the street lights are as follows:
Panel inclination A = 16o Light pole height = 5m
The design selects the width of the weld at the bottom of the light pole δ = 4mm, and the outer diameter of the bottom of the light pole = 168mm
The surface where the weld is located is the damaged surface of the light pole. The distance from the calculation point P of the failure surface resistance moment W of the light pole to the line of action of the load F of the battery plate subjected to the light pole is
PQ = [5000+(168+6)/tan16o]×Sin16o = 1545mm=1.545m. Therefore, the moment of wind load on the failure surface of the light pole M = F × 1.545.
According to the design maximum allowable wind speed of 27m/s, the basic load of 2×30W double-lamp solar street light panels is 730N. Considering a safety factor of 1.3, F = 1.3 x 730 = 949N.
So, M = F×1.545 = 949×1.545 = 1466N.m.
According to mathematical derivation, the resistance moment of the circular failure surface W = π×(3r2δ+3rδ2+δ3).
In the above formula, r is the inner diameter of the ring, and δ is the width of the ring.
Failure surface resistance moment W = π×(3r2δ+3rδ2+δ3)
=π×(3×842×4+3×84×42+43)= 88768mm3
=88.768×10－6 m3
Stress caused by wind load moment on failure surface = M/W
= 1466/(88.768×10－6) =16.5×106pa =16.5 Mpa<<215Mpa
Among them, 215 Mpa is the bending strength of Q235 steel.
Therefore, the width of the weld seam selected in the design meets the requirements. As long as the welding quality can be guaranteed, there is no problem with the wind resistance of the light pole. The main function of the solar charge and discharge controller is to protect the battery. The basic functions must have overcharge protection, overdischarge protection, light control, time control, anti-reverse connection, charging trickle protection, undervoltage protection, waterproof protection, etc. The general parameters of battery anti-overcharge and over-discharge protection voltage are shown in the table
1) Device selection
In the selection of devices, there are currently single-chip microcomputers and comparators. There are many schemes, each with its own characteristics and advantages. The corresponding scheme should be selected according to the needs of the customer group, and will not be detailed here.
2) Surface treatment
This series of products adopts the new technology of electrostatic coating, mainly based on FP professional building material coatings, which can meet the customer’s requirements for product surface color and environment coordination. climate environment. The processing technology is designed to be coated on the basis of hot-dip galvanizing, which greatly improves the product performance and meets the most stringent requirements of AAMA2605.2005, and other indicators have reached or exceeded the relevant requirements of GB.
3) Charging trickle protection
When the Yijia solar panel is charging the battery, after the battery reaches the peak voltage, if the battery continues to be charged at high voltage, it will easily cause the battery to lose water or lose control; if the charging is stopped, the battery will not be saturated. This controller immediately drops the voltage by 1V after charging to the peak voltage, and then enters the trickle charging state, which ensures that the battery can be stabilized in a full state, and at the same time avoids loss of water or loss of control, similar to cyclic charging of the battery, which is not only efficient It not only protects the battery, but also improves the charging times of the battery, and has a longer service life. *Main material: The light pole is all steel structure, the whole is hot-dip galvanized/sprayed treatment
*Solar module: crystalline silicon 15-80WP (according to load configuration)
*System working voltage: DC 12V—24V
*Controller: special controller for solar lamps, light control + time control, intelligent control (the light turns on automatically at night, and the light turns off at dawn)
*Energy storage battery: Fully enclosed maintenance-free lead-acid battery 12V17Ah—80Ah (according to load configuration)
*Light source type: energy-saving high-power integrated LED, rare earth high-efficiency energy-saving lamps (configurable according to customer requirements)
*Protection grade: IP65
* Operating temperature: -30 degrees to 70 degrees, wind resistance ≥ 150Km/h
* Lighting time: 4 to 14 hours (can be adjusted according to needs)
* Light pole height: 2 meters to 4 meters (can be made according to customer requirements)
*Continuous work in rainy weather (can be made according to customer requirements)
3) Charging trickle protection
When the Yijia solar panel is charging the battery, after the battery reaches the peak voltage, if the battery continues to be charged at high voltage, it will easily cause the battery to lose water or lose control; if the charging is stopped, the battery will not be saturated. This controller immediately drops the voltage by 1V after charging to the peak voltage, and then enters the trickle charging state, which ensures that the battery can be stabilized in a full state, and at the same time avoids loss of water or loss of control, similar to cyclic charging of the battery, which is not only efficient It not only protects the battery, but also improves the charging times of the battery, and has a longer service life. *Main material: The light pole is all steel structure, the whole is hot-dip galvanized/sprayed treatment
*Solar module: crystalline silicon 15-80WP (according to load configuration)
*System working voltage: DC 12V—24V
*Controller: special controller for solar lamps, light control + time control, intelligent control (the light turns on automatically at night, and the light turns off at dawn)
*Energy storage battery: Fully enclosed maintenance-free lead-acid battery 12V17Ah—80Ah (according to load configuration)
*Light source type: energy-saving high-power integrated LED, rare earth high-efficiency energy-saving lamps (configurable according to customer requirements)
*Protection grade: IP65
* Operating temperature: -30 degrees to 70 degrees, wind resistance ≥ 150Km/h
* Lighting time: 4 to 14 hours (can be adjusted according to needs)
* Light pole height: 2 meters to 4 meters (can be made according to customer requirements)
*Continuous work in rainy weather (can be made according to customer requirements)
Post time: Dec-01-2022