solar street lamp controller

Solar Street Light Controller Maintenance

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The solar street light controller is applied in the solar photovoltaic lighting system. It is called solar charge and discharge controller, which coordinates the work of the solar panel, battery, and load. Solar controller is the core component of solar street lights, which has the function of light control, time control, charging and discharging, etc. Keep it dry in use, and do not touch the button at discretion. Malfunction must be in professional operation.

It can be seen how important the solar street lamp controller is. What should I do if such an important part breaks down? Luxman light will share with you some of our own conclusions on this issue.

1.Protection, troubleshooting, and maintenance of solar street lamp controller

Protection function of solar street lamp controller
Short circuit of photovoltaic panelThe input terminal of the photovoltaic panel is short-circuited. When the short circuit condition is clear, the charging will continue automatically.
OverloadIf the current of the load exceeds the rated current of the controller, the controller will disconnect the load. In case of overload, it can only reduce the power consumption equipment at the load end and press the setting button once to eliminate it.
Load short circuitWhen the load is short-circuited, the controller will automatically protect it. After the controller automatically recovers the output, the protection action must be eliminated by pressing the setting button once.
Polarity reversal of the photovoltaic panelThe polarity of a photovoltaic panel is connected reversely, the controller will not be damaged, and it will continue to work normally after correcting the wiring error.
Battery polarity reverse protectionThe battery polarity is connected reversely, the controller will not be damaged, and it will continue to work normally after correcting the wiring error.
Overheat protectionThe controller automatically protects the radiator by detecting whether the temperature of the radiator exceeds 85 ℃, and stops charging and discharging when the temperature of the radiator exceeds 85 ℃.

2.Troubleshooting of solar street lamp controller power generation system

Troubleshooting of solar street lamp controller power generation system
PhenomenonSolution
When there is direct sunlight photovoltaic module, the charging indicator (1) is not on;Check whether the wiring at both ends of the battery power supply is correct and whether the contact is reliable;
The load indicator (3) is on, but there is no output;

 

Please check whether the electric appliance is connected correctly and reliably;
The load indicator lamp (3) flashes fast and has no output;

 

 

There is a short circuit in the output. Please check the output circuit. After removing all loads, press the setting button once, and the controller will return to normal output;
Load indicator light (3) flashes and no outputIf the load power exceeds the rated power, please reduce the power consumption equipment. Press the setting button once and the controller will resume output.

Related article:

How to choose batteries for your solar street lamp project?

Please contact us through the form below. Thanks!

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from e solar street light

Form E Certificate for solar street light

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China has signed a free trade agreement with ASEAN countries. Some ASEAN customers of LUXMAN  solar street light are worried about their import tariffs. In fact, if the manufacturer can provide solar street light with FORM E Certification,

Then ASEAN importers do not need to pay importing tax when importing solar street lamp products from China.

Brief introduction

FORM E CERTIFICATE in Chinese is called CERTIFICATE OF PREFERENTIAL ORIGIN OF China-ASEAN FREE TRADE AREA, or CERTIFICATE OF ASEAN for short, and its English name is 《ASEAN-CHINA FREE TRADE AREA PREFERENTIAL TARIFF CERTIFICATE OF ORIGIN FORM E》. The issuance of FORM E certificates is limited to products entitled to tariff preferences under the published 《Agreement on trade-in goods》, which must comply with 《The rules of origin of the china-ASEAN free trade area》. The contents of the certificate shall be completed in English.

Agreement countries are Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, Vietnam.

FORM A shall be used when applying for the FORM E certificate in writing. The items of the application form should be filled in truthfully, and the same fields as the certificate should be consistent with the content of the certificate.

Role

In international trade, countries in the world generally implement import trade control according to their respective foreign trade policies and impose differential tariffs and quantitative restrictions on imported goods, and the customs carry out statistics. The FORM E certificate is the certificate of goods issued by the importing and exporting countries, and it is also an important certificate for international trade.

To sum up, it has the following functions:

(1) an important tool for determining tariff treatment of products and improving market competitiveness;

(2) to prove the internal quality of the product or the basis for foreign exchange settlement;

(3) the basis for trade statistics;

(4) the importing country implements the differential quantity control, carries on the trade management tool.

Tips:

Since January 1, 2004, all agricultural products exported to ASEAN (HS chapters 1-8) can enjoy preferential tariff treatment by virtue of the preferential certificate of origin of a China-ASEAN free trade area (FORM E) issued by the inspection and quarantine body. From July 20, 2005, more than 7,000 kinds of normal products began to reduce the overall tax. China and the six old ASEAN members (namely Brunei, Indonesia, Malaysia, the Philippines, Singapore, and Thailand) reduced their tariffs on 40% of the tariff items to 0-5% by July 2005; In January 2007 the tariff on 60% of the items will be reduced to 0-5%. Tariffs were eventually cut to zero on January 1, 2010. For Laos, Myanmar, and Cambodia, 50 percent of the tariff items were reduced to 0-5 percent by January 2009 and January 2012. In 2013, the 40 percent tariff was reduced to zero. Vietnam’s 50% tariff fell to 0-5% in 2010. Four other countries (Laos, Myanmar, Cambodia, and Vietnam) cut tariffs to zero in 2015.

Sample of Original solar street light with FORM E from LUXMAN:

form e solar light

Related article:

https://luxmanlight.com/how-to-choose-batteries-for-your-solar-street-light-project/

Please contact us through the form below. Thanks!

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SONCAP

Nigeria SONCAP Certificate For Solar Street Light

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Clients from Nigeria always have concerns about SONCAP Certificate For Solar Street Light

SONCAP stands for the Standards Organization of Nigeria’s Conformity Assessment Programme and stands for Nigeria’s mandatory Conformity Assessment process. SONCAP is a new policy implemented by the Nigerian federal government to control the export of substandard and unsafe products to the country. SONCAP became effective on September 1, 2005, with a grace period of 90 days, i.e., December 1, 2005.

The purpose of the SONCAP

To ensure that controlled products exported to and entering the market in Nigeria comply with the relevant provisions of Nigerian industrial standards;
Ensuring a quality platform for imported goods and locally made products to prevent unfair market competition;
Prevent dumping of substandard goods on the Nigerian market, thereby avoiding losses to the state and importers;
Avoiding loss of life and property, including foreign exchange losses paid to exporters;

To prevent negative impacts, such as environmental pollution, arising from the destruction of substandard products by relevant regulatory bodies;
To facilitate trade by ensuring speedy clearance of imported goods;

SONCAP certification mandatory directory:

Except for the following:

1) food;

2) drugs;

3) medical products other than medical equipment and machinery;

4) as chemical raw materials for production;

5) military products;

6) import of products banned by the Nigerian government;

7) used products other than automobiles.

(mandatory listing of products to provide HS codes to confirm whether their products are within the regulated products.)

SONCAP process

To make this certificate, we need to apply for PC first. The importer will get the PC and apply for FORM M at the bank of the importing country. After the FORM M is available, we will apply for SONCAP certificate on our side before shipment, which can be directly used for customs clearance.

Step 1 apply for PC (product certificate)

There are three options as follows:

PC1=(unregistered product certificate) is equivalent to a one-time use certificate. Each shipment needs to be reapplied, and the shipment needs to be inspected. It is generally applicable to the case of an occasional shipment.

PC2=(registered status product certificate) is reusable and is valid for one year. The inspection rate is a quarterly sampling of 40%, generally applicable to multiple shipments. (high-risk products cannot be PC2)

PC3=(licensed status product certificate) is only issued to the manufacturer, a year of validity, inspection rate is half a year once, other batches of goods exempted from inspection, generally applicable to the delivery frequency.

Application for PC:

  1. The application form
  2. Test report (international standard or national standard report issued by CNAS qualification test)
  3. The ISOcertification
  4. Inspection

Step 2: apply for SONCAP certificate:

According to the situation of the company, choose one of the above three kinds of PCS, and then apply for SONCAP certificate. The inspection frequency of SONCAP certificate depends on the type of PC. Directly handle SONCAP certificate within the PC validity period.

Application for SONCAP certification in Nigeria:

  1. The application form
  2. PC scan copy
  3. Scanned copy of Form m (applied by the importer at the national bank of Nigeria according to the PC information)
  4. Invoice, packing list and bill of lading

LUXMAN produces the most authoritative SONCAP certification in the shortest period to ensure the smooth customs clearance of products exported to Nigeria. The product quality and service efficiency have been widely recognized by customers.

LUXMAN SONCAP Certificate of solar street light sample:

SONCAP

solar street light pole

Inspection and acceptance standard of solar street light pole

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Requirements for material and process

  1. The main bar shall be formed in one time, and the welding seam of the steel bar (Q235) shall be flat and smooth, and the flatness error between the convex part of the welding seam of the whole bar and the bar shall not be greater than ± 1mm. (method to detect the error between the protruding part of the welding seam of the lamp pole and the adjacent flat place with the thickness gauge of the lamp pole.) The welding mode of lamp pole is automatic sub-arc welding, and the dye Detection Inspection meets the requirements of international standard GB / t3323-1989111. The lamp pole shall be fixed by threading nails and jacking screws. (visual inspection)

Solar Street Light pole workmanship

  1. The anti-corrosion treatment is hot-dip galvanizing, and the surface of the galvanizing layer is required to be smooth and beautiful with consistent luster. There is no wrinkle, sagging, zinc tumor, peeling, spot, and defects on the internal and external surfaces. (the previous visual inspection) the thickness of the zinc layer is more than 85um (the thickness of the zinc layer is tested with a lamp post thickness gauge). The adhesion of the zinc layer shall meet the gb2694-98 standard to ensure that it will not fade for 8 years. The wind resistance of lamp-post shall be designed as per 36.9m/s. The anti-corrosion life of the lamp pole is more than 20 years. (the manufacturer shall provide relevant inspection reports of some national institutions)
  2. The thickness of plastic spraying on the surface of lamp pole shall be no less than 100um, the adhesion shall reach gb9286-880, the surface shall be smooth: the hardness shall be no less than 2h, the outdoor weather-resistant material shall be adopted, and the plastic spraying material shall be all polyester plastic powder. (hardness of the material is indicated by indentation diameter)
  3. The lamp pole process and acceptance standards shall be in accordance with the national standards. The design factor is 1.8. The design life of the lamp pole is more than 20 years. (inspection report provided by the manufacturer)
  4. The lamp pole shall be designed to facilitate the wire penetration and the hand hole door shall be in the form of backpack door. (visual inspection) the pole door must be flat and smooth, and the flatness error with this pole shall not be greater than ± 1mm (the flatness shall be detected by the pole detector). The interchangeability between the same pole door and the door shall be good, so as to meet the requirements of anti-theft and rainproof. After the cutting of the bar and door, the local reinforcement treatment is carried out to basically achieve the strength of the original integral bar. (change the small doors of two poles to see interchangeability)
  5. Appearance color: according to the color of the contract. (visual inspection)

The technical standard of solar street light pole:
Executive standard

  1. GB2694-88 quality of hot-dip galvanizing
  2. Gb10854-89 steel structure welding boundary dimension
  3. Gb77-88 carbon structural steel
  4. Gb1591-93 low-density structural steel technical specifications
  5. Gb2519-88 hot rolling steel plate including strip steel variety
  6. DL / t646-98 specification for manufacturing steel pole of transmission line
  7. Aasht01994 light pole, high pole and traffic signal pole

Technical parameters of solar street light pole:

  1. Taper: 12:1000
  2. Straightness deviation: < 0.2%
  3. Length deviation: < 5nlm
  4. Offset deviation: + 2mm
  5. Twist degree of lamp body: < 5 °
  6. Straightness of rod: < 1mm
  7. Bending arm-twist: < 2 °
  8. Offset deviation of bent arm part: < 15 °
  9. Perpendicularity deviation between flange and rod: < 1 °
  10. Deviation of flange welding position: < 2mm
  11. The thickness of zinc coating: ≥ 85um
  12. The thickness of plastic spraying on the surface of the lamp pole: ≥ 100um
  13. Design coefficient: 1.8
  14. Wind resistance: 36.9m/s

Technical test standard of solar street light pole:

  1. Adhesion test: the cross mark is vertically adhered with special adhesive tape for 12 times without peeling.
  2. Thickness test of the galvanized layer: take any 30 points, and the arithmetic mean value is greater than 86um.
  3. Salt spray resistance test: 5% NaCl, 35 ° C, 96 hours without yellow rust.
  4. Thickness uniformity test of zinc coating, copper sulfate immersion test for 6 times without copper hanging.

Technical parameters of polyester powder for lamp pole and lamp:

  1. State in the container: uniform color, loose without caking
  2. Sieve residue (88 um%): < 0.5
  3. Curing conditions: 180-200 ± 2 ° C for 10-20 minutes
  4. Appearance: flat and smooth, with slight anti orange wrinkle
  5. Film thickness: 100um
  6. Color: meet the standard color board and allowable color deviation range determined by the supplier and the demander
  7. Luster: high light ≥ 85%, half-light 51-84%, flat light 50-15%, no light < 14%
  8. Impact strength: 50kg / C ㎡
  9. Pencil hardness ≥ 2H (no scratch)
  10. Adhesion (cross-cut method): level 0
  11. Bending test (tapered shaft): 3mm pass
  12. Cupping test ≥ 6mm

Technical parameters of polyester powder for lamp pole and lamp:

  1. 1.State in the container: uniform color, loose without caking
  2. Sieve residue (88 um%): < 0.5
  3. Curing conditions: 180-200 ± 2 ° C for 10-20 minutes
  4. Appearance: flat and smooth, with slight anti orange wrinkle
  5. Color: meet the standard color board and allowable color deviation range determined by the supplier and the demander
  6. Luster: high light ≥ 85%, half-light 51-84%, flat light 50-15%, no light < 14%
  7. Impact strength: 50kg / C ㎡
  8. Pencil hardness ≥ 2H (no scratch)
  9. Adhesion (cross-cut method): level 0
  10. Bending test (tapered shaft): 3mm pass
  11. Cupping test ≥ 6mm

Related article:

https://luxmanlight.com/how-to-choose-batteries-for-your-solar-street-light-project/

Please contact us through the form below. Thanks!

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Fabrica de lámpara solar vial

System Design of Split-type Solar Street Light

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The Split-type solar street light is composed of the solar panels (including bracket), lamp head, control box (with the controller, battery, etc.) and lamp pole, foundation, etc. Split-type Solar street lamps generally form their own power supply system and are not connected with the grid network. There are two kinds of solar street lamp system: 12V and 24V.

100w Lámpara solar vial

Solar cell selection

1.Types:

Solar cells convert solar energy into electricity. There are three kinds of more practical solar cells: monocrystalline silicon, polycrystalline silicon, and amorphous silicon.

1) Monocrystalline silicon solar cell performance parameters are relatively stable. It is suitable for use in southern areas where there are more rainy days and less sunlight;

2) Polycrystalline silicon solar cell production process is relatively simple, the price is lower than monocrystalline silicon. It is suitable for use in the East and west areas with sufficient sunlight and good sunshine;

3) Amorphous silicon solar cells have low requirements for sunlight conditions and are suitable for outdoor areas with insufficient sunlight.

2.Working voltage

The working voltage of the solar cell is about 1.5 times the battery voltage, which can guarantee the normal charging of the battery. 8-9v is required for charging 6V battery

For solar cells, 15-18v solar cells are needed to charge 12V batteries. It needs a 33-36v solar cell to charge a 24V battery.

3.Output power WP

The output power per unit area of the solar cells is about 127wp / m2.

Solar cells are generally composed of multiple solar cells in series, and their capacity depends on the total consumption of lighting sources and transmission components.

Power and local solar radiation. The output power of solar cell should be more than 3-5 times of the light source power: when the light is abundant and the lamp is on

The short sunshine area is more than (3-4) times, and vice versa.

4 Average peak sunshine hours H

The output power WP of the solar cell is the 10L standard defined by the European Commission under the standard sunlight conditions, with the radiation intensity of 1000W / m2, The output power of solar cells at atmospheric quality AM1.5 and cell temperature 252c. The output power of the same solar cell is different at different times and different places. The so-called standard conditions are close to the sunshine conditions around noon on a sunny day.

Table 1 sunshine conditions in different regions of China

Regional divisionRich regionsRelative Rich regionsAvailable areas

Poor area

Annual total radiation

（KJ/cm2.Year）

≥580500～580420～500≤420
 

 

 

 

 

Region

Western Inner Mongolia, western Gansu, southern Xinjiang, Qinghai Tibet PlateauNorthern Xinjiang, Northeast China, Eastern Inner Mongolia, North China, Northern Shanxi, Ningxia, Gansu, Eastern Qinghai Tibet Plateau, Hainan, TaiwanNortheast North end, Inner Mongolia Hulun, lower reaches of the Yangtze River, Fujian, Guangdong, Guangxi, Guizhou, Yunnan, Henan, Shaanxi

Parts of Chongqing, Sichuan, Guizhou, Guangxi and Jiangxi

Continuous rainy days237

5

FeaturesAnnual sunshine≥3000h

Percentage ≥0.75

Annual sunshine 2400～3000h

Percentage 0.6 ～ 0.7

Annual sunshine 1600 ～2400h

Percentage 0.6～ 0.4

Annual sunshine≤1600h

Percentage ≤0.4

5. Selection and installation of solar light components.

Generally, Split-type solar street light pole is more than 5m, with a high center of gravity. Most of the solar panels are hanging type, in order to enhance the wind resistance of the whole set of equipment, generally

Select the component power required by the composition of multiple solar panels.

Fabrica de lámpara solar vial

Table-3 annual average sunshine time and optimal installation angle of major cities in China

CityLatitudeOptimum inclination（0）Annual average sunshine time（h）CityLatitudeOptimum inclination（0）Annual average sunshine time（h）
Harbin45.68+34.4Hangzhou30.23+33.42
Changchun43.90+14.8Nanchang28.67+23.81
Shenyang41.77+14.6Fuzhou26.08+43.46
BeiJing39.8+45Ji’nan36.68+64.44
Tianjin39.10+54.65Zhengzhou34.72+74.04
Hohhot40.78+35.6Wuhan30.63+73.80
TaiYuan37.78+54.8Changsha28.20+63.22
Urumqi43.78+124.6Guangzhou23.13-73.52
Xi Ning36.75+15.5Haikou20.03+123.75
Lan Zhou36.05+84.4Nanning22.82+53.54
Yinchuan38.48+25.5Chengdu30.67+22.87
Xi An34.30+143.6Guiyang26.58+82.84
Shang Hai31.17+33.8Kunming25.02-84.26
Nan Jing32.00+53.94Lhasa29.70-86.7

Battery selection

The battery stores the power generated by the solar panel when it is illuminated, and then releases it when it needs lighting at night.

The Split-type solar street light system with battery is mainly discussed

Type selection

1) Lead-acid (CS) battery: suitable for low- temperature high rate discharge, low specific energy, most of the current Split-type solar street light. Maintenance- free sealing,The price is low. Pay attention to prevent lead-acid pollution, which should be phased out.

2) Nickel cadmium (Ni Cd) battery: high discharge rate, good low- temperature performance, long cycle life, small system. Pay attention to prevent cadmium pollution.

3) Ni-H battery: high rate discharge, good low- temperature performance, low price, pollution-free, green and environmental protection battery. Small system.

4) Lithium battery: small size, good temperature performance, no pollution, long life.

At present, lead-acid maintenance-free battery, ordinary lead-acid battery and alkaline nickel-cadmium battery are used less and less due to environmental protection and volume reasons. People tend to use more compact design lithium battery, especially the stable and long-life lithium iron phosphate battery.

Capacity selection

The capacity of the battery is too small to meet the needs of lighting at night, if the capacity is too large, the battery is always in a state of power loss, which affects the battery life,

It also causes waste. The ratio of battery capacity (ah) to load capacity (ah) should be more than 3-6 times: in areas with less days of continuous rainy days, it should be more than 3-4 times

It is 5-6 times more than that in rainy days.

Battery connection

When connecting in parallel, the unbalanced effect of each cell should be considered. The number of parallel groups should not exceed

Pay attention to battery anti-theft.

LUXMAN - 80w Lámpara solar vial

Controller

The operation of solar street lamp is controlled by controller. Most controllers realize intelligent control. The controller shall have the following functions:

1.Street lamp control

Light control, time control, temperature control and other functions are available. With dimming (or midnight lights) function

2.Battery management

Limit the charging and discharging conditions of the battery to extend its service life:

1) Anti reverse charging control:

2) Anti overcharge control:

3) Anti over discharge control;

4) Temperature compensation.

Automatic protection

Solar cell reverse connection protection, battery reverse connection protection, battery open circuit protection, anti reverse charging protection at night, output short circuit protection, etc.

Indicator light display

Display the working status of main components of solar street lamp: battery, solar cell, LED lamp, etc.

Controller voltage

Controller voltage = battery voltage.

Tilt angle design of solar cell

The  solar cell angle inclination refers to the angle between the solar panel plane to the horizontal ground.

The inclination angle of solar cell module (which refers to the angle between the plane of solar cell and the ground plane) has been discussed in many technical circles. Tilt angle according to location.

Set (latitude, etc.) to determine; the front of the solar panel is facing the sun (or South slightly West), and the inclination angle is consistent with the local latitude. If conditions permit·

The tilt angle of solar panel can be adjusted according to the season.

Refer to “table-3” for the installation angle of solar cells in major cities in China.

 Wind resistant design of Solar street lamp

wind resistant design of Solar cell module

According to the maximum wind power, the wind resistance design of olar street lamp is carried out:

Table 4 corresponding relationship between wind force and wind speed

NameMaximum wind speed（m/s）Wind force (grade)NameMaximum wind speed（m/s）Wind force (grade)
Tropical depression（TD）10.8 ～17.16～7(Bottom center)Typhoon（TY）32.7 ～ 41.412 ～13
tropical storm（TS）2 ～24.48～9violent typhoon（STY）41.5 ～ 50.914 ～15
Strong tropical storm（STS）24.5 ～ 32.610 ～11Super typhoon（Super TY）＞51.0≥16

Note: from “GB / T 19201-2006”

There are more typhoons in the south of China. The solar street lamp pole should be able to resist at least grade 12 typhoons, and most areas in the North should be able to resist grade 10 gales.

Wind resistance design of street lamp pole

Lámpara solar vial

1) Solar module: the manufacturer shall ensure that it can withstand the local wind speed without damage, with the emphasis on the connection between the battery module bracket and the light pole.

2) Lighting pole and foundation; wind resistance design of street lamp pole and foundation and height, area, inclination angle, pole structure, local maximum wind speed, etc. of battery board

Relevant, the calculation and design shall be carried out by the lamp pole manufacturer or structural discipline to ensure the stability of the Split-type solar street light pole at the maximum wind speed.

Main light source and application of solar lighting

There are two forms of light source and solar energy system:

HID lamp

1) Solar powered HID lamp electronic ballast (or trigger, the same below). ）In fact, it is a DC / AC high-value converter. Therefore, the Split-type solar street lighting system generally does not need additional DC / AC inverter to reduce the circuit loss. This form is suitable for the new solar street lamp project.

2) Equipped with traditional HID lamp electronic ballast: connected to AC220 mains power supply. Its electronic ballast is essentially AC / DC / AC high-frequency converter. If it is connected with solar energy system, DC / AC small power inverter shall be added between battery and hid lamp electronic ballast. This form is suitable for street lamp reconstruction.

LED lamp

Solar powered street light does not need additional DC / AC inverter to reduce the circuit loss too, it allows up to 65% energy savings than conventional solar street light.

Application: low power solar LED lamps are used in residential or commercial areas, such as 5W / 10W / 15W / 25W / 30W, etc. High power solar street lamps are generally used in industrial parks and road lighting, such as 40W / 60W / 80W / 100W / 120W.

Lightning protection and grounding

Safety voltage

The solar street lamp generally uses dcl2v or DC24V. It is a safe voltage and does not do electrical protection grounding

Lightning protection and grounding

1) Street lamps and solar panels shall not be used as lightning arresters;

2) Use metal lamp post as lightning arrester and downlead:

3) When the reinforcement cage of street lamp foundation is below -0.50m and the surface area of reinforcement is more than 0.37m2, it can be used as lightning protection grounding body. Otherwise, the artificial grounding electrode shall be added, with the grounding resistance ≤ 10 Ω. If necessary, connect the grounding body. The grounding method is the same as that of general street lamp

4) TVs (transient voltage suppression) lightning protection is set in the street lamp controller

 

Design example

Split LED solar street lights are to be installed on a pavement in Shanghai. The lamp is 5 meters high, the street lamp input voltage is 24V, the power is 70W, the work is 8.5h every day, to ensure the continuous rainy days 7 days to provide lighting.

Try the Split-type solar street light  design.

1 solar cell selection

1) average annual sunshine time in Shanghai: check “table — 1” : 3.8h.

2) daily electricity consumption of street lamps:

(70/24) * 8.5 = 24.79 (Ah)

3) total charging current of battery:

(24.79 *1.05)/(3.8*0.85)=8.06(A)

1.05 is the comprehensive loss coefficient of the solar cell module system, and o. 85 is the charging efficiency of the battery.

4) total power of solar cells

8.06 * 31.17 = 251.23 (W)

Choose 2pcs Pm=135W solar panels in parallel. The best working voltage is 34.8V. Optimal operating current 3.88A. The component size is 800*1580*50mm

2.Battery selection

Battery capacity: 8.06*(7+1)=64.48(Ah)

Choose a maintenance-free DC24V – 70Ah lead-acid battery.

3.The controller

Select the intelligent controller. According to the requirements of Shanghai street lamp system, adjust the controller parameters and protect the street lamp batter

4. Angle of solar cell

Check “table — 1”, dip Angle of solar cells in Shanghai:

31．170+30=34.170

The direction of the solar pack is due south slightly to the west, with a horizon dip Angle of 34.170

 5.Wind resistance design of lamp post

As far as possible to use solar street lamp sets of products, by the manufacturer to provide qualified supporting anti-wind lamppost material and basic drawings, or by the structure of professional technical personnel according to the local climate conditions of the lamp poles and foundation anti-wind design or verification.

Related article:

https://luxmanlight.com/how-to-choose-batteries-for-your-solar-street-light-project/

Please contact us through the form below. Thanks!

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all in one solar street light

How to Design the All In One Solar Street Lamp?

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All In One Solar Street Lamp Appearance Design

“A good aircraft must be a good-looking one,” said Dassault, a French aircraft designer. The same goes for all in one solar street lamps.

Taking the all in one solar street lamp as an example, the application of solar LED street lamp has attracted more and more customers’ attention and favor, but there are some problems in the structural design, lighting creativity, modeling design and other aspects, which has caused considerable confusion to the use and selection of customers. We discuss the five problems existing in the structure and appearance design of all in one solar street light and put forward the corresponding solutions. The main problems existing in the single old solar street lamps on the market are as follows

LUXMAN - all in one solar street led light

First, the surface treatment of materials is difficult to withstand the erosion of a harsh environment for a long time. All lamps are directly installed outdoors, which may encounter acid rain, sandstorm, Blizzard, insolation, and other harsh environments.

Due to the large proportion of aluminum alloy, although its corrosion resistance has been greatly improved after anodizing treatment, it is still impossible to ensure that the oxide film will not be damaged when the lamp is installed. When the oxide film is damaged, the active chemical properties of aluminum alloy can be shown. In some places with relatively large pollution, acid rain is easy to occur, and acid water will accumulate in some gaps on the lamp body. The evaporation of acid water in the gaps will corrode the lamp body after rain and sunny days. The corroded lamp body not only affects the appearance, heat dissipation, but also mechanical properties.

Second, the regular rectangular appearance design does not meet the requirements of wind resistance. The rectangular shape mentioned here refers to the rectangular shape of the lamps and lanterns, and each face presents a large area of a plane. Such a plane is easy to bear force when the wind blows vertically from a plane, its plane cannot differentiate the wind, thus causing pressure on the lamp pole and the fixed structure of lamps and lanterns. This pressure is not obvious in the general situation, but when the lamp pole after a long time of aging and corrosion, if in the coastal areas of a typhoon, there may be a tilt or bending lamp pole or the risk of falling lamps.

Lámpara solar todo en uno-uno.png

Thirdly, the failure rate of the LED street lamp caused by gluing treatment is high. Gluing treatment mainly refers to the need to apply a lot of industrial glue to make water-proof in the production process due to the congenital profile design reasons, which often leads to three problems: 1. Uneven gluing, resulting in water leakage;

2. Long-term use of lamps, resulting in aging of internal glue, resulting in weakening or complete loss of water-proof function ;

3. Too much gluing and untidy interior of the lamp body may cause poor heat dissipation and affect the lithium battery and LED lamp beads.

This will lead to water damage to the battery on rainy days or LED aging faster, higher failure rate.

 

Fourth, the overall design brings later maintenance difficulties. Integral design refers to the lamp the entire light source cavity is designed as an unmaintainable whole, or the light source module or the battery package is designed as an unmaintainable whole. The practice in recent years shows that it is impossible for LED lamps to be 100% maintenance-free. And this kind of integral type lamps and lanterns just cannot maintain, after general street lamp appears fault, cannot finish the maintenance task in the overhead car, want to change the whole lamp to return to manufacturer repair. This approach forces the manufacturer to become both a manufacturer and a service provider, at a great cost.

We discussed some solutions to these five problems. For the first and second problems, we believe that the lamps and lanterns need to be structural-type waterproof, reduce the amount of glue, and as far as possible to make a streamlined multi-angle lamp body, to have a reasonable design of heat dissipation holes and diversion surface. In this way, the product has three advantages: 1, the streamlined shape is conducive to direct most of the water to the ground, reducing the corrosion of acid and alkali substances on the lamps; 2, the streamlined surface can greatly reduce the accumulation of dust and snow above, conducive to heat dissipation and reduce the lamp pole and lamp pressure; 3, the multi-angle surface can differentiate the wind force into multiple directions, reducing the pressure of lamp poles and lamps.

For the third and fourth problems, we suggest that the overall design of lamps should be replaced by modular design.

For the fifth problem, it is suggested that the design of luminaires should be considered from the perspective of operators, and attention should be paid to details in the design.

In the aspect of design, compared with the traditional lighting, the integrated solar street lamp LED module has the characteristics of small size and flexible array mode, which can realize various and exquisite product design. In addition, lighting design engineers should develop industrial and artistic design products in combination with regional culture. All places have their own unique regional culture and customs. Only lamps designed according to local characteristics can be more popular with people, and also can let visitors know more about local characteristics.

In addition, lighting designers should not only be proficient in lighting common sense, but also constantly improve their comprehensive quality, go deep into life, know how to find and feel the beauty of life, and integrate emotion into the design of works, so as to realize the design of lamps with vitality and ideas.

With the increasing competition and internationalization of the Chinese market, many small and medium-sized enterprises lack the support of market networks and brands, so they should take the road of professional development and pay attention to product quality. The development of enterprises focuses on how to develop products with high quality, long life, and low price, so as to create a win-win situation for consumers, enterprises and the government.

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How to Extend the Lifespan of Integrated Solar Street Light

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The service life of the integrated solar street light is mainly affected by four factors: solar panel, controller, lamp module and battery pack, and the most important is the service life of lithium battery. The life span of the solar street lamp directly affects the subsequent maintenance cost of customers.

The integrated solar panel is mainly divided into monocrystalline silicon, polycrystalline silicon, and amorphous silicon. The conversion efficiency of monocrystalline silicon solar panel is the highest, the photoelectric conversion efficiency is about 15%, and the highest is 24%. However, the charging effect on rainy days is not as good as polycrystalline silicon, and the production cost is high. As monocrystalline silicon or polycrystalline silicon is generally encapsulated by toughened glass and waterproof resin, it is durable and has a service life of 15 years, up to 25 years. The output power efficiency is 90% after 15 years and 85% after 25 years.

Different brands of LED Chips have a different service life. At present, integrated solar street lamps use LED lamps. The LED lamps have high luminous efficiency and service life of up to 50000 hours. Theoretically, 12 hours a day can be used for 11 years.

For the integrated solar street lamp controller, it is not only necessary to control, monitor and maintain the operation status of photovoltaic modules, lithium batteries and loads but also need to control the lithium batteries to ensure the operation status of lithium batteries.  At the same time, it directly maintains the load of the solar street lamps and provides a useful and relatively stable working environment, especially in critical conditions such as lithium battery power shortage or Undervoltage operation.

Reminder: a high precision, high stability controller plays a very critical role, can effectively extend battery life.

The lithium battery life of Luxman light factory’s series of integrated solar street lamps can reach about 6-8 years.

To sum up, the comprehensive service life of integrated solar street lamps is about 8 years, during which there is no maintenance, no electric charge, energy-saving, and environmental protection. Compared with the street lamps with traditional electric lighting, it can save a lot of costs and also contribute to the protection of the environment.

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What is Integrated Solar LED Street Light?

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Integrated solar LED street light, also known as solar LED integrated light, is a combination of high-efficiency solar panels, 6-8 years long-life lithium batteries, high-luminous-efficiency LEDs and intelligent controllers, PIR human sensor modules, anti-theft installation brackets. Also called all in one solar LED street light or integrated solar LED garden light.

integrated solar light

Working principle

The integrated solar street lamp is converted into electricity by solar panels and then recharges the lithium batteries in the integrated solar street lamp. During the day, even on cloudy days, the solar generator (solar panel) collects the energy needed for storage and automatically supplies LED lights at night, enabling night lighting.

At the same time, the integrated solar street lamp has PIR human body sensing function, which can realize the infrared sensing control lamp working mode of the intelligent human body at night. When there is a person, it will be 100% bright, and when there is no person, it will automatically change to 30% brightness after a certain time delay. saving more energy intelligently.  Solar energy, as a safe and environmentally friendly new energy with an inexhaustible supply, plays an important role in the integration of solar street lights.

Structure and composition

The main components of the integrated solar LED street lamp is as follows: it is composed of an integrated lamp (configuration: high-efficiency solar panel, high-capacity lithium battery, MPPT intelligent controller, high-brightness LED Chips, PIR human body sensor probe, anti-theft installation bracket) and a lamp pole.

integrated led solar street light

Structure and composition

The main components of the integrated solar LED street lamp is as follows: it is composed of an integrated lamp (configuration: high-efficiency solar panel, high-capacity lithium battery, MPPT intelligent controller, high-brightness LED Chips, PIR human body sensor probe, anti-theft installation bracket) and a lamp pole.

 

Functional features

The integrated solar LED street lamp adopts the integrated design, which is simple, fashionable, light and practical.

· Use solar power to save electricity and protect resources;

· Adopt the human body infrared induction control technology, the light will be on when people come, and the light will be dark when people go, so as to extend the lighting time;

· Adopt high-capacity long-life lithium battery to ensure the service life of the product, generally up to 6-8 years;

· No need for cable, extremely convenient installation;

· Waterproof structure, safe and reliable;

· Easy to expand other functions such as timing and APP control, USB interface, CCTV camera;

· Adopt a modular design concept to facilitate installation, maintenance, and repair;

· Alloy materials are used as the main structure, with good anti-rust and anti-corrosion functions;

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Classification and Safety symbols of LED luminaires

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 According to the safety performance of the LED luminaires

The LED Luminaires are divided into four categories, namely:

LED luminaire Classification

Class 0 LED Luminaire

Rely on basic insulation for protection against electric shock-only rely on PVC for electrical wires for insulation. In the event of a basic insulation failure (a corruption of the wire: such as broken wires, aging), an electric shock or fire hazard may result. Protection against electric shock has to rely on the environment.

Class ⅠLED  Luminaire

The protection against electric shock not only depends on the basic insulation but also includes additional safety measures, that is, connecting accessible conductive parts to protective grounding conductors in fixed lines, so that accessible conductive parts will not be charged in the event of basic insulation failure. (Class 0 lamp + Ground wire)

Class Ⅱ Luminaire

(1) Definition of Class 2 lamps:

Protection against electric shock not only depends on basic insulation, but also has additional safety measures, such as double insulation or reinforced insulation, but there is no protection against grounding or installation conditions.

wind solar hybrid street light

(2) Features and standard requirements for Class 2 lamps:

  1. Such a luminaire may have one of the following forms:

a) A luminaire with a complete housing made of durable and sturdy insulating material that encloses all metal parts, except that small parts such as nameplates, screws and rivets are completely isolated from live parts with insulating material. Insulation is at least equivalent to reinforced insulation. Such a luminaire is called an insulated shell type I luminaire.

b) Lamps with sturdy all-metal enclosures are all double-insulated inside, except for those parts where double-insulation is obviously not feasible. Such luminaires are referred to as metal housing type II luminaires.

c) A luminaire having a combination of a) and b) above.

d)Insulated shell-type n lamps can form part or all of supplementary insulation or reinforced insulation.

e)The luminaire is still considered as a Class II luminaire if it is grounded to aid starting, rather than directly connected to accessible metal parts. The lamp cap housing and the light source’s starting band are not considered to be easily accessible metal parts, except those which are determined to be live parts by tests.

f)If a lamp with double insulation and/or reinforced insulation has a unified ground terminal or ground contact, the lamp has a Class I structure. However, if a fixed type II luminaire is used in a loop installation, it may have an internal terminal block. This terminal is used to maintain the electrical continuity of the ground conductor, and this ground conductor does not terminate in the luminaire. Internal terminal blocks are isolated from accessible metal through Class II insulation.

Class III Luminaire

The power supply used is a safety extra-low voltage, and no low voltage higher than SELV (36V) is generated inside the lamp: Convert the mains power to a low voltage of 36v (by adding a transformer).

Anti – shock level symbol description

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Solar Street Lamp Controller Design Principle

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Solar street lamp controller is the smallest part of the whole solar street lamp system

its cost is also one of the lower parts, but it is a very important part of the whole system, is the control center of the whole solar street lamp system. With the development of the industry, the function of the solar street lamp controller is more and more, and the degree of intelligence is more and more high, so the reasonable and scientific design of solar street lamp controller standards, quality and parameters is very critical. After years of experience in controller development and use, LUXMAN summarized the following principles:

High-quality electronic components

The life of the components determines the life of the solar lamp controller, so the controller must strictly control the raw material incoming inspection, Luxman chose the  Japan Rubycon capacitor, TI chip, the quality of these components is stable,

Accurate parameter setting

Pay attention to the controller and solar street light battery supporting, especially the battery voltage, solar street light controller and solar street light lighting module source matching, solar street light LED module input voltage and solar street light controller output voltage must be consistent. The power distribution of the solar street lamp controller should be reasonable, The lighting time and power of the street lamp should be reasonably distributed according to the power generation and storage capacity of the solar street lamp system.

Note that the lead acid battery solar street light controller and lithium battery  solar street lamp controller is not universal.

Reliable software performance

The performance of the software should be stable. Luxman’s controller software is based on many practical application parameters and feedback settings. The installation environment has a great impact on the lamps. For example, in Japan, Canada, and other countries, the sunshine time in winter is relatively short and the lighting time needs to be longer. Therefore, for different projects and applications, we provide customized program services to ensure that our products are stable.

Reasonable use of the management function

The current solar street lamp controller in addition to the regular function of time control(lights up for 12 hours every night), infrared (people come to light, people go to light out or dim), intelligent management output (the same electricity can ensure that the lights do not go out for a week or a month or even longer). We can also add a camera, Bluetooth connection, support app, pad, computer remote control, etc. these functions must be selected and set according to the needs of users.
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