Street lighting solutions and street lamps using advanced solar technology.

1 A broad light is high-tech Co., Ltd. Beijing
2 Beijing Solar Energy Technology Co., Ltd. Platt
3 Beijing China New Energy Industry Co., Ltd. Sun
4 Beijing Tsinghua Sunshine Technology Co., Ltd.
5 Beijing Sunshine Technology Development Co., Ltd. Po Sang
6 Beijing Four Seasons Solar Energy Technology Co., Ltd. Song Mu
7 Temple Beijing Solar Energy Industry Co., Ltd.
8 Beijing Tianyuan Solar Energy Industry Co., Ltd.
9 Ian Van Beijing Science and Technology Development Co., Ltd. Sun
10 Kennedy Solar Energy Industry Co., Ltd. Beijing
11 Yu Xin Beijing Solar Energy Industry Co., Ltd.
12 Section of the Beijing solar lighting Energy Industry Company
13 Solar Energy Equipment Manufacturing Co., Ltd. Changzhou Now
14 New Material Technology Co., Ltd. Yangtze Chuzhou
15Shunde District of Foshan City, 15 London Electric Co Australia
16 Fujian San Yuan Electronics Technology Co., Ltd.
17 Guangdong Midea Electric Appliance Manufacturing Co., Ltd. kitchen
18Guangdong Macro Gas Appliance Co., Ltd. 18
19 Five-Star Solar Co., Ltd. Guangdong
20Solar Energy Co., Ltd. Haining Lucky 20
21 Haining Solar Energy Industry Co., Ltd. Hi
22 Solar Energy Technology Co., Ltd. Haining Yushchenko
23 Hefei Meiling Solar Energy Technology Co., Ltd.
24Solar Energy Technology Co., Ltd. Hefei Rongshida 24
25 Solar Energy Co., Ltd. Hebei Light
26Solar Energy Co., Ltd. Hebei Ring 26
27 Solar Energy Technology Co., Ltd. Henan fly
28 Solar Energy Group Co., Ltd. Hubei, China Yang
29 Huang Ming solar lighting Energy Co., Ltd.
30Solar Energy Co., Ltd., Jinan Jia source 30
31Prosperity Electric Co., Ltd. Jiaxing 31
32 Jiaxing Sunshine New Energy Co., Ltd., Tongji
33Solar Energy Co., Ltd. Jiangsu 33 Auster
34 Wright Solar Technology Co., Ltd. Jiangsu Bedford
35 Solar Energy Technology Co., Ltd. Jiangsu Light Kitchen
36 brilliant solar lighting Co., Ltd. Jiangsu Huaiyin
37Jia Jia Solar Energy Co., Ltd. Jiangsu 37
38Solar Energy Industry Co., Ltd. Jiangsu Sunshine 38
39Jan Solar Co., Ltd., Jiangsu Province, China
40Dual Energy Solar Co., Ltd. Jiangsu 40
41 Jiangsu New Energy Co., Ltd. Sun Bao
Solar Energy Co., Ltd. Jiangsu Sun Yu 42
43 Solar Energy Group Co., Ltd. Jiangsu per liter
44 Solar Energy Co., Ltd. Kaifeng Fu warm children
Nanjing is still 45 times the Special Technology Development Co., Ltd.
46 Solar Energy Technology Engineering Co., Ltd. Qingdao Aucma
Haier Qingdao Economic and Technological Development Zone 47 Water Heater Co., Ltd.
48 group or Group Co., Ltd.
49Solar Energy Co., Ltd. Rizhao Fu 49 days
50Section 50 of the U.S. Solar Energy Sunshine Manufacturing Co., Ltd.
51 Solar Energy Co., Ltd. Shandong Hatt
52 Solar Technology Development Co., Ltd. Shandong Gold
53 Solar Energy Technology Co., Ltd. Shandong, Beijing, Cape
54 New Energy Co., Ltd. Shandong Power Norit
55 days of Shandong Asahi Solar Co., Ltd. Dragon Optical
56 Sunshine Energy Development Co., Ltd. Shandong Peony
57Emperor Solar Co., Ltd. Shandong Hot 57
58Solar Energy Co., Ltd. Shandong, Le Sang 58
59 Solar Energy Co., Ltd. Shandong Tianfeng
60 New Energy Co., Ltd. Shandong, Wang Pu
61 New Energy Technology Co., Ltd. Shandong Duck
62 Blue Sky Technology Co., Ltd. Shandong Branch
63 Sichuan Changhong Electric Co., Ltd.
64Super 64 Di Electric Industrial Co., Ltd., Sichuan
65 incident in Sichuan Xing Energy Technology Co., Ltd.
66Solar Energy Co., Ltd. 66 Tongcheng Guangrun
67 Best New Energy Development Co., Ltd. Wuhu
68 Panda Electronics Group Co., Ltd.
69Day 69 Yangzhou Lida Co., Ltd.
70Solar Energy Co., Ltd. Yingkou Panpan 70
71 through Solar Technology Co., Ltd. in Yunnan province
72Le 72 high Zhejiang New Energy Co., Ltd.
73Le 73 Home Depot Solar Co., Ltd. Zhejiang
74 Hot New Energy Co., Ltd. Zhejiang every family
75 Zhejiang Meida Solar Energy Industrial Co., Ltd.
76Zhe Jiang Shenhao Light Technology Co., Ltd. 76
77 Solar Energy Co., Ltd. Zhejiang God too
78Zhe Jiang Sidi special 78 New Energy Co., Ltd.
79Zhejiang Modern New Energy Co., Ltd. 79
80Zhongshan Vantage Gas Appliance Co., Ltd. 80
81Electric Co., Ltd. Chongqing Oukai 81
82 Kate Electric Co., Ltd. Qingdao
83 Wing Solar Co., Ltd. in Qinhuangdao
84 Beijing Shi Jia Solar Energy Industry Co., Ltd. Sun
85 Anhui Environmental Energy Technology Co., Ltd. at the source
86 Beijing Solar Energy Research Institute Co., Ltd. 86
87 Weifang Ocean off Long 87 Solar Technology Co., Ltd.
88 Yuxi City, Yunnan Province, so standard 88 Solar Equipment Co., Ltd.
89 Yang Hong 89 New Energy Co., Ltd. Zhejiang

Solar lawn light and power system design unique advantages as solar lawn light, rapid development in recent years.

A, LED solar lighting technical principles

Solar lawn light and power system design unique advantages as solar lawn light, rapid development in recent years. Lawn small power, mainly for the purpose of decoration, the high mobility requirements, the circuit laid difficulties, the venue for the high water requirements. This makes the solar-powered lawn show many unprecedented advantages.

1, LED Solar Lawn definition

The main use of solar energy lawn lamp solar energy to work, when the sunlight during the day in the solar battery, the light energy into electricity stored in batteries, and then from the battery at night as the lawn of the LED (light emitting diode ) to provide power.

2, LED solar lawn of the structure and composition

By the solar modules (photovoltaic panels), super bright LED lights (light source), maintenance-free rechargeable batteries, automatic control circuit, lighting and so on.

3, LED solar lawn of the system components

Solar lawn boost IC, can automatically switch between charge and discharge behavior, when the solar charging panels during the day when the sun sensor, automatically switch to turn off the lights into the state of charge, when darkness fell less than a solar charging panel sun sensor, automatically switching to enter the battery discharge state of the lights. Solar lawn boost IC, 1.5 volt rechargeable battery can output voltage raised to 3.6 volts.

A circuit board should be equipped with an IC 5 1-7 rechargeable batteries can drive LED light emitting diodes; several sets of IC circuit board so; solar lawn lamp controller integrated circuit and some peripheral components, the mainfeatures include charging circuit, driver circuit, control circuit and PWM photosensitive circuit. The controller has a high conversion efficiency: 80 ~ 85% (typical), can reduce the solar cell version of the power requirements; low start voltage: 0.9V (max); adjustable output current and other characteristics.

4, LED solar lighting source advantage

At present, most lawn use LED as a light source, LED, long life, up to 100,000 hours or more, low voltage, very suitable for application in solar lawn light on. In particular, LED technology has experienced a breakthrough in the key, and its properties in the past 5 years has greatly improved its cost performance has greatly improved.

In addition, LED by the low voltage DC power supply, its low cost and light control, so adjust the light and shade, frequent switches are possible, and will not adversely affect the performance of LED. You can also easily control the color, change the distribution of light, resulting in dynamic mirage, so it is particularly applicable in the solar lawn light on.

Second, the technical principles of solar corridor light

Solar corridor light is a new type of architectural lighting systems. Solar corridor light a single light with sound and light control, to achieve people to light, people go out the lamp, energy saving, saving, easy to use. Solar power system installation simple knot, easy to use, there is no power rationing power concerns.Solar corridor light source using a long life and low-voltage power supply system independent, safe and reliable performance, one-time investment, long-term free, residential buildings and office buildings to meet the different needs, both in line with the national green energy efficient building requirements, but also enhance the building building quality.

1, the working principle

Solar corridor light installed in the building include a roof of solar cells and installation of lighting in all floors, and the unity of place in the battery, charge and discharge controller. Battery and lighting on each floor connected by wires. Use of LED lighting load, and work with sound and light control switch.

During the day, solar modules in a certain intensity of the sunlight to generate electricity through solar energy stored in the battery charge and discharge within the controller; night, the battery charge and discharge through the power load controller. Typically, the solar system was designed according to the actual situation will increase the battery capacity to ensure the rainy-day lighting.

2, the system performance

(1) lighting power range :2-5W;

(2) Power Supply Type: DC;

(3) solar cell conversion efficiency:> 15.5%;

(4) the system power efficiency:> 85%; (5) solar cell open circuit voltage: (6) solar maximum operating current: <1.8A;

(7) Battery Configuration Voltage: DC12V8, battery voltage protection point: 11.6V ± 1%;

(8) Battery voltage protection point: 11.6V ± 1%; (9) battery overcharge protection point: 14.4V ± 1%;

(10) Battery overcharge recovery point: 13.8V ± 1%; (11) with battery and solar cell polarity protection;

(12) with the load short-circuit and overload protection;

(13) Control: battery overcharge and over discharge control, lighting control of a single voice;

(14) system lamps, LED lamps (DC).

Integrated Solar Road corridor can be drawn on the edge lights:

(1) energy: photovoltaic conversion of solar energy to provide power, inexhaustible;

(2) Environment: pollution, no noise, the no radiation;

(3) Safety: Low voltage DC power supply, no electric shock, fire and other accidents;

(4) easy: Install the brevity and easy to use, no electricity rationing power concerns;

(5) Long life: solar panels more than 20 years, 3-5 years battery, LED light up to 50,000 hours or more;

(6), high grade: Technology products, green energy, and use scientific and technological, green image to improve, enhance quality;

(7) economy: an investment in long-term good enough;

(8) applies to a wide range: solar energy from nature, so where there are places where sunshine can be used.

Corridor lights are instances of utility corridor lighting, installation and maintenance management is the principle property owners and assessed, and now consists of two parts corridor light charges, some of which is the maintenance fee, the other is electricity. But the actual charges vary in the corridor lights there is no uniform standard, making the owners and property management departments contradiction. There are many corridor light switches still use old-fashioned light bulbs and all night long bright lights to LED lighting If the corridor, the use of sound and light control switch. This kind of LED solid-state LED light source for lighting, power consumption is just an ordinary incandescent lamp 1 / 8, life is it 10 times.

For example, the original use of the corridor area will be changed to 25W incandescent lamp 3W LED lamps, each lamp can save energy consumption to 8 times, that the corridor lights per lamp per year of electricity consumption only 1.68 (the original need for 18.25 degrees), 300 corridor lights only 504 kWh, annual savings of 4971 kWh. The use of solar corridor light not only in saving energy easy to use, but also an investment in long-term free of charge, easing the conflict with the owners of property management property management reduces costs, comprehensive costs more cost-effective.

So from a market point of view, not only on the existing corridor for energy-saving lighting system, users can also install solar power system requirements, prospects for promotion.

Generally believed that the excellent performance of the solid LED as a light source, white LED is the most promising. Therefore, many countries have invested heavily in actively high power, high efficiency white LED. There are already commercial lighting level white LED, the price is constantly declining.
1 white LED performance
(1) the characteristics of white LED
White LED lighting-class power for the W, 3 W, 5 W, 0 W, 5 W,
The so-called white LED lighting level is the single package, with a “W” 20 W and other products.
(2) the curve parameters of white LED
Can be seen from the curve: when added to the forward voltage is less than its threshold voltage, the forward current is very small, the brightness is very low. When added to the forward voltage on it exceeds the threshold voltage when, LED starts to conduct and emit light. With further increase the forward voltage, forward current of a sudden rapid increase in the brightness of light is gradually increased, the forward voltage and forward current showed a linear relationship basically, it is necessary to strictly control the forward current size, to prevent the use of the process exceeds its maximum current and seriously shorten its life, and even cause permanent damage.
(3) white LED in the shape of the structure
Common single-level white solar lighting package form factor.Because of its power consumption is higher, when the PN junction temperature to prevent the work
Life through high impact, heat can become safe and effective work of the main issues, while the output of white light to the chip taken out as effectively as possible to improve the luminous efficiency of LED is also a critical issue. High-power white LED is usually by a single or multiple chip package according to parallel or series model substrate in the same heat, showing the hexagonal appearance (Figure 2a). Of course, there are less power (W) is the use of white LED chip form (see Figure 2b), mainly for some special applications, such as digital cameras flash.

2 White LED Application
White solar lighting level to ensure not only be a good application, but also to obtain higher efficiency, the first is the need to meet certain application conditions, followed by the need to adopt suitable LED driver circuit to meet with the requirements of the parameters of work .
(1) application conditions
① drive circuit is a power supply for LED special power supply, to have a simple circuit structure, small footprint and high efficiency volume;
② output driver circuit parameters (current, voltage) with the LED to be driven to match the technical parameters to meet the requirements of LED and high precision constant current control and the right pressure limiting function. Multiple outputs, each road should be able to individually control the output;
③ with linearity better dimming capabilities to meet the different applications of the LED brightness adjustment requirements;
④ In the abnormal state (LED open circuit, short circuit, driver circuit fault), the circuit can be on the circuit itself, LED and users have the appropriate protection;
⑤ drive circuit work, electrical work on other less interference to meet the requirements related to electromagnetic compatibility.
(2) linear drive applications
Linear drive application is one of the most simple and most direct way to drive applications. White LED applications in lighting level, although there is low efficiency and poor regulation, but because of its circuit are simple, compact and can meet the general requirements, so in certain occasions used more often.
① VDD + power supply means limiting resistor R
Circuit has the advantage of simple structure and low cost.Resistor in series with the LED as the additional loss of large, linear power supply VDD and its power consumption is also large, so the two are added together the overall efficiency is low (“50%), plus LED current control accuracy is low, the brightness is not adjustable, it is generally only used in small power and short time according to
Specified occasions, such as LED flashlights, emergency lighting.
② steady power supply with current limiting resistor VDD + R + S mode electronic switch
The advantage is to not only improve the LED current control accuracy, and the LED’s brightness can also change the on-off switch S than to adjust. However, due to series resistance and linear steady flow of additional power losses are high, so the resulting overall efficiency is still low, the specific scope of application subject to greater restrictions.

(3) Switch drive applications
By switching drivers (Figure 4) can get a good current control accuracy and high overall efficiency. Driver application mode switching buck and the boost is divided into two broad categories.
① buck switch drive
Buck switch driver is higher than the LED supply voltage for the voltage or multiple LED driver in case of using parallel applications. The main principle is to use the circuit in accordance with the requirements of the electronic switch S off the resulting current chopper to get to meet the work requirements of LED forward current value, the negative feedback through the current (from the current sampling R0) such that flow through LED forward current stabilized at a certain range, and can be both a dimming function. Figure 4 is to play the role of the inductor L S and S open storage turns off when the continuous current role in order to reduce the flow through the LED forward current fluctuations.
② boost switch driver
Boost switch driver is less than the LED supply voltage for the voltage or the number of LED in series driven by the application of the case. The working principle of the circuit is the use in accordance with the requirements of the electronic switch S off the on-off effect. When the power supply V S to open storage inductor L, S L turns off the voltage polarity reversal on electric and power (DD) voltage V DD to get the overlay work to meet the requirements of LED forward current and forward voltage through the current negative feedback (from R0 to current sampling), so that
May flow through the LED’s forward current stabilized at a certain range, but can be both a range of dimming.

3 Conclusion

Some European countries such as Germany already use solar lighting power, the U.S. has in large quantities. China’s most prestigious research institutions solar photovoltaic system — Ministry of Education, Engineering Research Center of the technology have been listed in the “energy inventory”: the national annual increase of 50 million outdoor lighting, solar lighting can be accounted for ifthousandth year, the state could save nearly 700 million kWh of electricity, equivalent to the state to send a 00,000 kilowatts of power stations. We look forward to this is not the cleanest energy in the
A long time in the future to all households.

Can be used to replace the newly developed high-power solid shining general lighting devices, although subject to the current price, to a certain extent, restricted the application of the speed, but because of its excellent performance, with the development of technology continues to progress, can be predicted white LED lighting-class must have a good prospect. In this paper, its performance characteristics, drive parameters, drive requirements, drive circuit efficiency discussion, white LED lighting-class practical application has some reference value.

I. Background, purpose and meaning
As a global energy crisis, the world generally given to renewable energy use and research. Solar energy as an emerging green energy, with its inexhaustible, pollution, etc., are being rapidly

The application. solar lighting do not hand in its management and control, install a one-time investment in electricity costs without future, without setting up transmission lines or trenching cabling. Can be easily installed in Plaza, schools, parks, and not easy to set up transmission lines and many other advantages place more and more attention.

1.1 The need for new energy development
The 21st century, mankind is faced with the realization of economic and social sustainable development, major challenges, how can the limited energy and environmental protection under the dual constraints of economic development has become a hot question

Problems. The energy issue is more prominent, not only in the lack of conventional energy sources, more serious is that fossil energy development and utilization of environmental degradation is exacerbated. Mainly for the following aspects:
(1) energy shortages. Limited conventional energy sources and distribution is uneven, resulting in most countries of the world’s energy supply can not meet the needs of their economic development. In the long run, the world has exploration

Oil reserves can only be used out in 2020, natural gas can only be extended to 2040 or so, even if abundant coal resources would only last two to three years. Therefore, people have to face sooner or later, fossil fuel

Material depletion of the crisis situation.
(2) environmental pollution. Burning of coal, oil and other fossil fuels, every year hundreds of tons of sulfur and other harmful substances into the sky, the atmosphere has been seriously polluted the environment, directly affecting the health and life of residents

Quality; and even the formation of acid rain in some areas, serious pollution of soil and water resources.
(3) the greenhouse effect. The use of fossil fuels not only causes environmental pollution, emit large amounts of greenhouse gases, greenhouse effect, causing global climate change

1.2 The advantages of solar energy utilization
To solve the energy problems of mankind to achieve sustainable development can only rely on science and technology, large-scale exploitation of renewable and clean energy. It is predicted that by mid-century renewable energy in the world can.

Source structure will account for 50% or more, including solar and renewable energy in this century will be an unprecedented pace, and gradually became the focus of the energy base of human society. solar lighting with Has unique advantages, the development and utilization in the 21st century will develop by leaps and bounds, and will eventually transfer the energy structure in the world, take a leading role, the late 21st century, the dominant source of energy. Our link with Guangzhou

Large, has a very rich solar energy resources. It is estimated that the total solar radiation throughout the country reached 335 ~ 837 586 in value. From the national distribution of the total solar radiation, Tibet, Qinghai

Shanghai, Xinjiang, Inner Mongolia, southern Shanxi, northern Shaanxi, Hebei, Shandong, Liaoning, Jilin, western, central and southwestern Yunnan Province, in southeastern Guangdong, Fujian, southeast, east and west of Hainan Island

And southwest of Taiwan Province and other large areas large amount of solar radiation. Especially in the largest Tibetan Plateau, where the average altitude of 4000m or more, thin atmosphere, clean, good transparency

, Low latitude, sunshine time is long. For example, known as the “Solar City”of Lhasa City, 1961-1970, on average, the annual average sunshine time is 3005.7h, relative sunshine 68%

108.5 average sunny days, cloudy days was 98.8 days, the global solar radiation for the 816, than the other provinces and the country with the high latitude regions. Sichuan and Guizhou provinces, the country’s total amount of solar radiation

Minimum, especially in the Sichuan Basin is the most, where rain and more fog, less sunny. For example, known as “fog’’said the Chengdu, the annual average sunshine time is only 1 152.2h, relative sunshine duration for the

26%, the annual average of 24.7 sunny days, cloudy days of 244.6 days. Other areas of the total solar radiation center.
Solar energy as an “inexhaustible” security, environmental protection and new energy sources more and more attention. Here we use solar lighting and electricity for lighting effects and practical contrast.
Installation of complex lighting electricity: electric lighting in the City project has a complex operating procedures, the first laying of cables, cable channel will be carried out here, excavation, laying of underground pipe, pipe threading, back

Fill such a large number of infrastructure projects. Then a long period of installation and commissioning, if any of the lines in question, will have to rework large areas. And complex terrain and line requirements, the cost of labor and supporting materials

High. The high electricity tariff lighting: lighting electricity work has a fixed high tariffs for long-term continuous and other configurations on the line for maintenance or replacement, maintenance costs every year. Sun

Free electricity to lighting: solar lighting is a one-time investment, no maintenance costs, investment costs recovered for three years, long-term benefit.
Mains lighting a security risk: utility construction quality due to lighting, landscape renovation project, materials aging, power supply not normal, water and electricity pipes and other aspects of the conflict brought a lot of security

Risk. No safety hazards of solar lighting: solar lighting is super low-voltage products, safe and reliable operation.
Other advantages of solar lighting: green, high ecological community for the development and promotion of the addition of new selling point; sustainable reduction of property management costs and reduce some of the owners share the costs of public

Use. Described in the foregoing comparison, solar lighting, no safety problems, no energy consumption, environmental protection, ease of installation, maintenance and other automatic control for the inherent characteristics of real estate sales, public works

Building can be used directly to bring significant advantages.

1.3 The advantages of solar LED street lights
With the deepening of sustainable development, people active in the development of new types of renewable energy, while also advocating green energy saving technology in the lighting field, long life and safety of green energy

Rich green color of the LED solid-state lighting, micro-has also been recognized as the world an important way to energy saving, solar LED lights also integrates the advantages of both.
LED (Light Emitting Diode, Light Emitting Diode) is a kind of energy into visible light to the semiconductor light emitting device, do not rely on heating the filament to glow, but on the positive and negative materials

Charge recombination to light energy conversion efficiency is very high. With high efficiency, energy saving, long life, maintenance-free, environment protection. Relatively large power consumption of traditional light sources, and mostly under high pressure,

Link inverter with boost energy efficiency and reduced, while the LED using low voltage DC power supply, security and lighting control and low cost. LED response time is normally only a few nanoseconds to a few nanoseconds, so that

Frequent switching, adjusting brightness possible. And as all solid-state LED light, shock, impact resistance not broken, low heat, no heat radiation, is a cold light source, mercury, sodium and other elements may be