Solar Street Light System

Solar street lamp system
The solar street lamp system can guarantee the normal work of the cloudy and rainy weather for more than 15 days. Its system consists of LED light source (including drive), solar panel, storage battery (including storage battery incubator), solar street lamp controller, street lamp pole (including base) and accessories wire, etc. .
The solar cell module generally single crystal silicon or polycrystalline silicon solar cell components; the LED lamp general high-power LED light source; the controller is usually placed on poles, with light control, time control, overcharge and overdischarge protection and reverse connection protection, the controller has more higher four quarter adjusted lighting time function, power function, semi intelligent charging and discharging function; battery generally placed in the ground or there will be a special battery box, the VRLA battery, battery, battery or colloidal iron and aluminum lithium battery etc.. Solar energy lamp automatic work, without trenching wiring, but need lamp device in the embedded parts (concrete base).
LED light source for solar street lamps
1. the luminous efficiency is high, the power consumption is small, the service life is long, and the working temperature is low.
2. safety and reliability.
3. the reaction speed is fast, the unit volume is small, and the green environment is green.
4. under the same brightness, the electricity consumption is 1/10 of the incandescent lamp, 1/3 of the fluorescent lamp, but the life is 50 times of the incandescent lamp, and the fluorescent lamp 20 times is the fourth generation lighting product after the incandescent lamp, the fluorescent lamp and the gas discharge lamp.
5., the advent of a single high-power super bright LED is possible to cross the high efficiency lighting market in the field of LED application. It will be one of the greatest inventions after Edison invented the incandescent lamp.

Solar street lamp battery pack bracket
1) dip angle design
In order to allow solar cell components to receive as much solar radiation as possible in one year, we have to choose a best dip for the solar cell components.
The discussion on the optimal angle of solar cell components is used in different areas according to different regions.
2) wind resistant design
In the solar street lamp system, one of the most important problems in structure is the wind resistance design. The wind resistance design is divided into two main blocks, one is the wind resistance design of the battery assembly bracket and the second is the wind resistance design of the lamp pole. The following two blocks are analyzed respectively.
Wind resistance design of solar cell component support
According to the technical data of the battery assembly manufacturers, the solar cell components can withstand the upwind pressure of 2700Pa. If the wind resistance coefficient is selected as 27m/s (equivalent to typhoon ten), according to the non viscous fluid mechanics, the wind pressure of the battery assembly is only 365Pa. So, the component itself is completely able to withstand the wind speed of the 27m/s without damage. Therefore, the key to the design is the connection between the battery pack support and the lamp pole.
In the design of this lamp system, the connection between the battery assembly support and the lamp rod is designed and connected with the bolt rod.
The wind resistant design of the lamp
The parameters of the street lamp are as follows:
The dip angle of the battery board A = 16O height of the lamp pole = 5m
The design selection of the bottom weld width at the bottom of the lamp bar = 4mm lamppost bottom diameter = 168mm
The face of the weld is the damage surface of the lamp pole. The distance from the calculation point P to the moment W of the lamppost failure surface is the distance between the F action line of the battery plate acting on the lamp pole.
PQ = [5000+ (168+6) /tan16o] * Sin16o = 1545mm=1.545m. Therefore, the moment of action of wind load on the damage surface of the lamp bar M = F x 1.545.
According to the design of 27m/s maximum wind speed, the basic load of 2 * 30W head lamp solar street lamp panels for 730N. Consider the safety factor of 1.3, F = 1.3 * 730 = 949N.
So, M = F * 1.545 = 949 * 1.545 = 1466N.m.
According to the mathematical derivation, the resistance of the ring shaped failure surface to the moment W = pi * * (3R2 Delta +3r Delta 2+ delta 3).
In the upper form, R is the inner diameter of the ring, and the delta is the ring width.
Failure surface resistance moment W = Pi x (3R2 Delta +3r Delta 2+ delta 3)
= * * * (3 x 842 x 4+3 x 84 x 42+43) = 88768mm3
=88.768 * m3.
The stress caused by the moment of action of wind load on the failure surface = M/W
1466/ = (88.768 * 10-6) =16.5 * 106pa =16.5 Mpa<<215Mpa
Among them, 215 Mpa is the flexural strength of Q235 steel.
Therefore, the design of the selection of weld width to meet the requirements, as long as the quality of welding can be guaranteed, the wind resistance of the lamp is no problem.

Solar street lamp controller
The main function of the solar charge and discharge controller is to protect the battery. The basic functions must have overcharge protection, overplay protection, light control, time control, anti reverse connection, charge trickle flow protection, undervoltage protection, waterproof protection and so on.
1) selection of devices
Currently, there are many ways to choose devices, such as single chip microcomputer and comparator. There are many characteristics and advantages. We should choose corresponding solutions according to the needs of customers.
2) surface treatment
This series of products adopts the new technology of electrostatic coating, mainly based on FP professional building materials, which can meet the customers' requirements for the product's surface color and environment. At the same time, the product has high self-cleaning property, strong corrosion resistance and aging resistance, and is suitable for any climate environment. Process design for hot galvanizing on the basis of painting, the product performance is greatly improved, to achieve the most stringent AAMA2605.2005 requirements, the relevant requirements of other indicators have reached or exceeded GB.
3) charge trickle protection
When Yijia solar panels charge the battery, if the battery reaches the peak voltage, if it continues to charge at high voltage, it will cause the battery to lose water or get out of control. If it stops charging, the battery will not be saturated. This controller to the peak voltage immediately after buck 1V in charge, and then into the trickle charge state, ensure the battery can be stabilized on the full state, while avoiding the loss or out of control, similar to the cycle of the battery charge, not only efficient to protect the battery, but also increase the number of charging the battery, longer service life.

Working principle of solar street lamp
Description: the working principle of solar street lamp solar street lamps during the day under the control of intelligent controller, solar panels after sunlight irradiation, absorbs solar energy and convert it into electricity, solar battery components to the battery charging, night battery provides power to the LED lamp light source, realize the function of illumination. The DC controller can ensure that the battery pack is not damaged due to overcharge or overdischarge, and has the functions of light control, time control, temperature compensation, lightning protection and reverse polarity protection.

 Technical advantages of solar street lamps
1. installation is simple: when the solar street lamp is installed, the complex line is not installed, only a cement base is made, a battery pit is made, and the galvanized bolt is fixed. Do not need to consume a lot of manpower, material and financial resources consumption, simple installation, no need wiring or "cut" dig construction, no power rationing concerns.
2. less investment funds: solar street lamps once investment, long-term benefit, because the line is simple, do not produce maintenance costs, do not produce expensive electricity. 6 - 7 years to recover the cost, 3 - 4 year savings of about 1000000 electricity and maintenance costs. The cost of electric circuit lights is high and the line is complicated, and it is necessary to repair the line without interruption for a long time. In the case of special voltage instability, it is inevitable that the sodium lamp is bad. With the prolongation of the years, the aging of the line and the cost of maintenance are increasing year by year.
3., safety performance is good: solar street lamps, because of 12 to 24V low voltage, stable voltage, reliable operation and no hidden danger, are ideal products for ecological communities and road administration departments. There were no accidents such as electric shock, fire and other accidents. City circuit lights have great potential safety risks, people's living environment is constantly changing, road reconstruction, landscape engineering construction, power supply is not normal, water and gas pipeline cross construction and many other aspects bring many hidden dangers to.
4. energy conservation and environmental protection: solar energy conversion to provide electrical energy, inexhaustible. No pollution, no noise, no radiation. Solar street lamps can add new selling points to the development and popularization of noble ecological areas, and reduce the cost of property management and reduce the cost of public sharing. To sum up, the inherent characteristics of solar lighting, such as safety, no hidden trouble, energy saving, no consumption, environmental protection, easy installation, automatic control and maintenance free, will directly bring obvious advantages to the sale of real estate and the construction of municipal engineering.
5. long life: solar lamp life is much higher than the ordinary electric lamp life, such as the main components of solar lamps, solar battery components of the service life of 25 years; the average life expectancy of the low pressure sodium lamp for 18000 hours; the average life of a low voltage high efficiency energy saving lamp for 6000 hours; the average life expectancy of the ultra bright LED is greater than 50000 hours; solar energy battery life for 38AH following 2-5 years; 38-150AH 3-7. High technology content, control system, accessories are international brand, intelligent design, reliable quality. According to the conventional cell according to the local price bureau according to the provisions of the pure residential area is a one-time charge of residential street maintenance costs 6 yuan / square meters ", makes the initial investment to be higher than ordinary lamps solar lamps a lot of initial investment. In summary, the comprehensive comparison of the solar lamps and lanterns to save investment features is quite obvious.
The solar power system, the performance of the battery directly affects the service life and the comprehensive cost and operation quality of the system, using the latest achievements of the company and the storage China academy metal jointly developed in this project can type colloidal battery, compared with ordinary lead-acid battery, it has the following outstanding characteristics in design and manufacturing process:
The service life is too long, and the service life is five to ten years under normal conditions.
With the suitable formula of positive and negative alloy and the ratio of active material, the battery is more suitable for the charging and discharging characteristics of the energy storage battery.
The design of colloidal electrolyte effectively inhibits the deactivation of active substances and the sulfation of plates, thus slowing down the performance degradation of batteries. The deep charging and discharging life of the battery has been greatly improved. Using the four generation LED light source lighting products.