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Solar Street Lamp Components

Solar street lamp system can ensure normal operation in cloudy and 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 lamp controller, street lamp pole (including foundation) and auxiliary wire rod.

Solar Street Lamp Components 1

Monocrystalline silicon or polycrystalline silicon solar cell modules are generally used for solar cell modules; LED lamp cap generally adopts high-power LED light source; The controller is generally placed in the lamp pole, with light control, time control, overcharge and discharge protection and reverse connection protection. The more advanced controller has the function of adjusting the lighting time in four seasons, half power function, intelligent charge and discharge function, etc; The battery is generally placed underground or there will be a special battery insulation box. Valve regulated lead-acid battery, colloidal battery, iron aluminum battery or lithium battery can be used. The solar lamp works automatically without trenching and wiring, but the lamp pole needs to be installed on the embedded parts (concrete base). [2]

LED light source1. High luminous efficiency, low power consumption, long service life and low working temperature.2. Strong safety and reliability.

3. Fast reaction speed, small unit volume and green environmental protection.4. At the same brightness, the power consumption is one tenth of that of incandescent lamps and one third of that of fluorescent lamps, while the service life is 50 times that of incandescent lamps and 20 times that of fluorescent lamps. It is the fourth generation of lighting products after incandescent lamps, fluorescent lamps and gas discharge lamps.5. The advent of a single high-power ultra bright LED makes it possible for the LED application field to cross into the high-efficiency lighting source market. It will be one of the greatest inventions of mankind after Edison invented the incandescent lamp. [3]

Battery module bracket1) Inclination designIn order to make the solar cell module receive as much solar radiation as possible in a year, we should choose an optimal inclination angle for the solar cell module.

Solar Street Lamp Components 2

The discussion on the optimal inclination of solar cell modules is used in different regions according to different regions.2) Wind resistant designIn the solar street lamp system, a structural problem that needs to be paid great attention to is the wind resistance design. The wind resistance design is mainly divided into two parts: one is the wind resistance design of battery module support, and the other is the wind resistance design of lamp pole. The following analysis is made according to the above two parts.

(1) wind resistance design of solar cell module supportAccording to the technical parameter data of the battery module manufacturer, the upwind pressure that the solar cell module can withstand is 2700pa. If the wind resistance coefficient is selected as 27m / S (equivalent to level 10 typhoon), according to inviscid hydrodynamics, the wind pressure borne by the battery module is only 365pa. Therefore, the module itself can withstand the wind speed of 27m / s without damage. Therefore, the key to be considered in the design is the connection between the battery module support and the lamp post.In the design of this set of street lamp system, the connection between the battery module support and the lamp pole is designed to be fixed and connected with a bolt rod.

wind resistance design of street lamp poleThe parameters of street lamps are as follows:Inclination of battery panel a = 16O, lamp pole height = 5m

Design and select the weld width at the bottom of the lamp post = 4mm lamp pole bottom outer diameter = 168mmThe surface where the weld is located is the failure surface of the lamp post. The distance from the calculation point P of the resistance moment w of the failure surface of the lamp pole to the action line of the battery plate action load f on the lamp pole isPQ = [50001686/tan16o] Sin16o = 1545mm=1.545m Therefore, the action moment of wind load on the failure surface of lamp pole M = F 1.545

According to the design maximum allowable wind speed of 27m / s, 2 The basic load of 30W double head solar street lamp panel is 730n. Considering the safety factor of 1.3, f = 1.3 730 = 949NSo, M = F 1.545 = 949 1.545 = 1466N.mAccording to mathematical derivation, the resistance moment of circular failure surface w = 3r2 3r 2 3

Where R is the inner diameter of the ring, Is the ring width.Resistance moment of failure surface w = 3r2 3r 2 3= 3 eight hundred and forty-two 43 eighty-four 4243= 88768mm3

=88.768 106 m3Stress caused by moment of action of wind load on failure surface = m / W= 1466/88.768 106 =16.5 106pa =16.5 Mpa

215 MPa is the bending strength of Q235 steel.Therefore, the weld width selected in the design meets the requirements. As long as the welding quality can be guaranteed, the wind resistance of the lamp post is no problem.controller

The main function of solar charge and discharge controller is to protect the battery. The basic functions must include overcharge protection, over discharge protection, optical control, time control, anti reverse connection, charging trickle protection, undervoltage protection, waterproof protection, etc. [1] 1) Device selectionIn the selection of devices, at present, there are single-chip microcomputer and comparator. There are many schemes, each with its own characteristics and advantages. The corresponding scheme should be selected according to the demand characteristics of the customer group, which will not be described in detail here.

2) Surface treatmentThis series of products adopt new electrostatic coating technology, mainly FP professional building materials coating, which can meet the requirements of customers for the coordination of product surface color and environment. At the same time, the products have high self-cleaning, strong corrosion resistance and aging resistance, and are suitable for any climate and 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. Other indicators have met or exceeded the relevant requirements of GB.3) Charging trickle protection

When zhirun solar panel charges the battery, if the battery continues to charge at high voltage after reaching the peak voltage, it is easy to cause water loss or out of control of the battery; If the battery cannot be saturated when charging is stopped. This controller immediately depressurizes 1V after charging to the peak voltage, and then enters the trickle charging state, which ensures that the battery can be stable in the full state, while avoiding water loss or out of control. It is similar to circulating charging the battery, which not only effectively protects the battery, but also improves the charging times of the battery and has a longer service life.

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