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What’s the benefit of using lithium battery in solar street light? Lithium battery is a kind of controllable, non-polluting energy storage dry battery, which is more stable and safer than lead-acid storage battery. They are different. The service life of lead-acid storage battery is only two or three years, while the service life of lithium battery can be up to ten years. Besides, the service life of LED light source in the solar street light is around fifty thousand hours, which amounts to ten years. Therefore, the lithium battery can perfectly match with solar street light system, so that it is unnecessary to change the battery frequently. Lithium batteries are small in size, light in weight, and easy to transport. Compared with the lead-acid gel battery used in the solar street light with the same power, the weight of lithium storage battery is about one-third and the volume is about one-third. Lithium batteries have high energy density and longer service life. Energy density refers to the amount of energy stored in a certain unit of space or mass. The greater the energy density of a battery, the more electricity stored per unit weight or volume. Lithium batteries are pollution-free, while lead-acid batteries will pollute the environment with metal lead. Lithium battery is more intelligent. The solar street light with lithium battery is able to make intelligent and optimized calculation on battery capacity, operating time and weather condition according to the users’ demand. Lithium battery can adapt to hostile environment, whose working temperature range is -20℃--60℃. It can function normally even in the northern area with temperature of -45℃. The solar street light with lithium battery is easy to maintain. When maintaining the solar street light, we only need to take the battery from the lamp post or the solar panel. However, when maintaining the traditional street light, we need to dig out the buried battery, which is much more troublesome than lithium battery solar street light maintenance. During the day, the solar panel receives solar energy and converts it into electricity, which will be stored in the battery. At night, when the illuminance gradually decreases to about 10lux and the open circuit voltage of the solar panel is about 4.5V, the charge and discharge controller will detect the value and the battery will start to discharge the lamp holder. The storage battery will stop discharging after 8.5 hours. The main function of the controller is to protect the storage battery.View Detail
Company News
Double Ninth Festival, long blessings. Today is the Double Ninth Festival, a traditional folk festival on September 9th of the Chinese lunar calendar. In ancient times, people would climb high to pray for blessings. It has been passed down to this day and has added connotations such as respecting the elderly. Climbing high to appreciate autumn and being grateful and respectful to the elderly are the two major themes of today’s Double Ninth Festival activities. RoadSmart wishes you good health and good luck during the Double Ninth Festival.View Detail
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Solar street light city lighting The original function of urban road lighting is just lighting. But in modern society, it has been given a new meaning. Urban road lighting is also a kind of urban landscape design. With the improvement of living standard, people are paying more attention to urban road lighting design. Street lights along the urban road provide a safe and comfortable artificial luminous environment for people, which meets people’s demand, encourages people to go outside at night and thus leading to more urban activities. The quality of artificial luminous environment and people’s feeling mainly depend on illuminance, dazzle control and photochromism of the street lights. Urban road lighting design not only affects the appearance of a city, but also affects urban residents’ livelihood. Therefore, designers should take all aspects of factors into consideration when planning and designing the urban road lighting. Only in this way can we promote the development of modern cities. We will talk about how to plan and design the urban road lighting in a scientific and reasonable way in this article. The staff should pay attention to the project environment when designing the street light circuits. Besides, staff need to ensure that the transformer is capable of meeting electricity demands of all the facilities. What’s more, the builders should pay attention to the public facilities along the roads when laying the cables. Generally, the low-voltage cables are buried underground through direct burial way, which can not only ensure the normal operation of the cables, but also protect the green belt from damage. As we mentioned before, the functions of urban road lighting are more than providing lighting for people. It is also a part of urban landscape. Therefore, the aesthetic lamp are chosen in the planning and design of urban road lighting systems. At present, the light sources used in road lighting mainly include high-pressure sodium lamps, metal halide lamps, LED lights and electrodeless lamps. All of the light sources have their own characteristics. Designers should make reasonable choices based on road functions and the requirements of the national green lighting plan, so as to not only meet the requirements of road lighting standards, but also achieve the goal of energy saving and emission reduction. The choice of light source should also meet the following two requirements: one is to meet the road illumination requirements, and the other is to meet the power density value requirements. Therefore, the designer should select the appropriate light source on the basis of comprehensive consideration of various factors. In modern city, the factors to consider of road lighting circuit design are not just illumination and power supply. Based on the goal of saving energy, the design of urban road lighting circuits serves for lighting time control of the street lights. The staff can use the computer terminal to monitor the lighting condition of street lights in real time in the urban area where the intelligent control system has been installed. For other areas, manual inspection is adopted to adjust the lighting time. As China's road transportation facilities are relatively complete and urban road lighting circuits are buried underground, overall planning must be taken into account when designing urban road lighting circuits. Designers should make a comprehensive assessment of urban road lighting circuits from two aspects.View Detail
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Things You Need to Know about Solar Battery Installation Generating clean, green energy for your home using solar panels helps you save money and reduce your environmental impact. Battery technology has developed rapidly in the last few years, giving more options to solar households connected to the grid to store their own energy in a solar battery. Solar battery can help you leverage the full potential of your solar panels. The significant reduction in the cost of battery storage systems in recent years means that installing a solar battery is fast becoming a viable option for many households. This article covers the basics you need to know about solar battery installation. What different types of batteries are available? Lithium-Ion Battery Home solar batteries made with lithium-ion are becoming a popular choice. Lithium-ion solar batteries are popular for their compact design, higher Depth of Discharge rating, and extended lifespan compared to lead-acid batteries. Lithium-ion technology has been used for many years in portable devices, including in laptops and mobile phones. Because of these benefits, lithium-ion batteries are typically more expensive than other solar battery types, but this initial investment can pay off over time. Due to falling costs and increased production, they can now be manufactured in larger sizes and are well-suited to storing solar power. Lead-Acid Battery Lead-acid batteries are similar to the battery type found in most gas-powered vehicles, and have been used for decades as solar storage options, though they are now typically used in more DIY storage solutions. Lead-acid batteries are significantly cheaper than other solar battery types, but they have a shorter lifespan and lower Depth of Discharge rating. Lead-acid batteries also have less capacity than lithium-ion batteries, so multiple batteries are usually connected together into a solar battery bank to provide enough storage, making the installation more complicated. Where can I install a solar battery storage system? Some battery storage systems can be wall mounted, others are floor standing and some are best located inside, while others should be installed outside. You may also choose to install multiple solar batteries to increase your storage capacity, in which case you will need extra storage space. Lead-acid batteries tend to be physically larger than lithium batteries and are usually installed outside or in a utility room as they vent hydrogen when charged. Some batteries (usually lithium batteries) are designed to be wall mounted inside a utility room, which helps control their temperature. If your battery is designed to be installed outside, it will come with a weatherproof enclosure, though you will still need to find a suitable place to install it. This will need to include access for electrical wiring, consider flooding/splashing of the enclosure, preferably be out of direct sunlight and not be adjacent to heat or ignition sources. If your battery is installed inside, you may also need to consider ventilation. It is recommended that battery storage systems not be installed in a habitable room, like a living room or bedroom.Tips for wiring your solar batteries Besides, learning how to wire your solar battery is also important. The following are some general tips for wiring your solar system batteries. 1.Keep all connecting wires the same size and length wherever possible. 2.Try to avoid shorting solar batteries and be very careful when connecting them up. 3.Always maintain a gap between batteries to ensure adequate cooling. 4.Minimize dirt and debris around the battery house to avoid shorting and damage to batteries. 5.Place the solar battery bank and the inverter as close as practicable to keep things efficient. 6.Route your wires carefully to keep them as straight as possible and easily visible. 7.Use cable ties to secure wires regularly to maintain capacity and minimise electromagnetic interference. Learning knowledge about solar battery installation saves you time and money and also assure the normal operation of solar battery storage system. Related Articles:Some Common Myths about Solar PanelsHow to choose solar storage battery for your need? Tags: All In One Solar Street Light All In Two Solar Street Light Solar Garden LightView Detail
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The Advantages and Disadvantages of Solar Street Light Advantages 1、Energy-saving: Solar street light generates electricity by absorbing solar power, which saves the electricity bill. 2、Safe: AC power supply lighting fixtures have safety risks due to various reasons such as construction quality, raw materials embrittlement and disorder of the power supply system. Solar street lights do not use AC current so there is no safety risk. 3、Environmentally-friendly: Solar street light causes no pollution and radiation, which conforms to modern low-carbon and environmental awareness. 4、Durable: The components of solar street light can keep good performance for ten years. And the solar panels can last for twenty-five years. 5、Low Maintenance Cost: In the remote area, the cost for power transmission and distribution is quite high. So, the cost for traditional street light is higher. Instead, solar street light only requires regular maintenance and save the utility electricity bills. 6、Easy Installation: To install a solar street light is easy and convenient. Customers can choose and adjust the size of solar street light based on their needs. 7、Independent Power Supply System: Off-grid solar street light system is freer and more independent in obtaining power. Actually, it is known that the biggest advantage of solar street light is environmentally-friendly and energy-saving. It will be applied to China and the whole world. With the popularization of solar power, people will tend to reduce the use of other power. The application of solar power will make our world more beautiful. Disadvantages 1、The project cost of solar street light is relatively high. The project cost of solar street light is higher than traditional street light because the components of solar street light include solar battery and solar panels. The solar street light requires huge investment which will bring economic pressure although the maintenance fee is low. 2、The solar street light may not work when there is no sunlight. The working principle of solar street light is that solar panels convert sunlight into electricity. The electricity power is then stored in solar rechargeable batteries. The battery will supply power to the light at night. Solar street lights can not be applied to areas where there is insufficient sunlight. If solar street lights encounter continuous rainy days, the electricity will not be generated and the lights are unlikely to work. 3、The solar street light is likely to be stolen. The components of solar street light are somewhat valuable. If the solar street lights are installed in the sparsely-populated area, the thieves will steal the components except lamp-post and then sell them to earn money. In conclusion, solar street light can save the installation fee, project cost and electricity bills. Although it has some disadvantages, but the advantages of solar street light are more than traditional street light. We believe that the solar street light will be applied widely and become the ideal lighting system in both big cities and countries in the future.View Detail
Oversea activities
Road Smart China&Myanmar Friendship Smart Solar Street Light Sep. 25 - 28, with the support of the Yunnan Provincial People's Government and Yunnan Provincial Department of Commerce, Yunnan Green Energy Industry Association and Department of Research and Innovation, ministry of education of Myanmar held a PV application technology training conference in Rangoon. This meeting aims to strengthen China and Myanmar PV application technology communication, display advanced photovoltaic applications, to enhance the photovoltaic technology and create a good opportunity for two countries. RoadSmart Co., Ltd, representing one of the most advanced solar street light manufacturers in the industry in China, was invited to the conference as a training guest to give relevant technical explanations and exchanges. The night before the meeting,Yunnan Green Energy Industry Association Secretary-General and Road Smart operations director and his staff, visited the reconstruction of solar street lights demonstration project in Yunnan Province undertaked by Road Smart, separately installed in Mande Le Hospitals, temples, provincial governments and Rangoon hospitals, the Ministry of Education, hotels. The scene of the lighting effect was unanimously approved by people. At the same time, Road Smart operations director of the project explained the wokring conditions of these solar street lights, focusing on explain the promote and use of Road Smart solar street lights in Myanmar, will meet the needs of night lighting at local place, bring convenience to residents' travel. In the meeting, the director of the Department of Research and Innovation, ministry of education of Myanmar made an important speech on the opening of the meeting. He said that the friendship between China and Myanmar has a long history and the two sides have close contacts, extensive cooperation and complementary advantages. Myanmar's average sunshine for a long time, adequate light resources, if most efficient, maximize use solar energy will be able to solve the shortage of energy in Myanmar, and can save a lot of financial expenditure. In recent years, Myanmar government given a lot of advocacy to support to speed up the development of photovoltaic technology, also continue to carry out industry conferences to discuss the exchange of photovoltaic applications. During the meeting,Road Smart operations director explained the solar street lamp industry trends and the current industry advanced technology and future development direction. He Ssaid a good solar street lights need to integrate seven major disciplines, only enterprise have real strength can create an extreme solar street lights, andRoad Smart solar street lights will provide the most professional and most quality basis Construction material selection for countries along "the belt and road". This meeting has also received high attention from myanmar's ministry of education and media.View Detail
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Introduction to Integrated Solar Street Light With the increasing awareness of environmental protection and current global energy crisis, more and more countries gradually began to pay attention to the use of solar energy. Solar street light is a common solar product. The solar lighting technology has evolved considerably and been constantly changing since its initial production and launching. With the help of remarkable advancements in solar lighting technology and people’s vision to produce cost-effective compact solar street lights, they have created integrated solar street lights. These street lights have high efficiency, prolonged backup and acquire the best overall performance better than the older versions of solar street lights, making them widely used today. What is integrated solar street lightIntegrated solar street light is a contemporary outdoor lighting solution and have become famous in the recent times due to their compact, stylish and lightweight designs. From the word itself, “integrated” combined several components in one product. It comes with solar panels, LED fixtures, LED driver technology, a lithium-ion battery with advanced charging technology, a PIR motion sensor, and other smart technologies and electronics all compacted in one body with a mounted pole stand. The integrated solar street light can easily be mounted on a pole top. The main componentsSolar Panel---This is one of the most important parts of an integrated solar street light. Solar panels will convert solar energy into electricity. LED Fixture---This is commonly used as the luminary of a modern solar street light. LED fixtures provide higher lumens with low consumption of energy. Energy consumption of LED fixture is just about half of what traditional HPS fixtures require. Rechargeable Battery---Connected to the solar panel, batteries are involved in storing electricity during the day & for providing electricity to the fixture during the night. While the battery capacity will affect backup time of the light, the life cycle of the battery is a very important factor. Lithium ion batteries are most popular these days as they are compact in size and can integrate well within the street light. Mounting Pole---Since there are components mounted on top of the pole, strong poles are necessary for all street lights. Solar panels, fixtures and batteries compose an integral part of a solar street light. Solar panels and all electronics are integrated into the pole itself in some newer designs. How does integrated solar street lights workThe solar panels of integrated solar street light convert solar energy into electricity and then recharge the storage batteries. During the day, even on cloudy days, the solar panel collects the energy needed for storage and automatically supplies LED lights at night, enabling night lighting. The integrated solar street light uses a PIR motion sensor that automatically adjusts the brightness of the LED light when it detects movement at a near distance. When it detects any body movement near the light post, the LED fixtures will adjust and produce full brightness. Then, when it no longer detects movement, it automatically reduces its brightness. Why choose integrated solar street lightIntegrated solar street lights bring a lot of benefits to consumers. Here are some of these benefits. Easy transport and installationWith its compact size, it is easy to ship plus it has an easy installation process that can be done in a few minutes only. When installing integrated solar street lights, there is no complex wiring process, unlike the traditional street lights. If you’re only new to this, you can still install it without difficulty because it doesn’t require an engineering or electrical background and skills in setting it up. Lower shipping costBecause integrated solar street lights are compact in structure and have an all-in-one design, the shipping cost is also lower. Besides, these lights are lightweight which makes the transportation and installation effortless. Lesser energy consumptionLED technology is used to deliver brighter light consuming lesser energy.An LED fixture has significantly boosted the luminous efficacy up to 200 lumens per watt. Also, with the aid of solar batteries, consumers can still get the same brightness at night while consuming much less energy. Integrated solar street lights equipped with this kind of light source can easily get 5+ days autonomy, making it possible to operate normally in areas with constant rainy seasons. Minimal to zero maintenanceCompared to traditional street lights, integrated solar street lights require minimal to zero maintenance due to their materials and compact design. They are waterproof, shock proof, rust proof and resistant to adverse weather conditions. Investing in integrated solar street light seems to provide you with utmost benefits. Although the initial investments seems high but in the long run this kind of solar street lights will prove to be providing a longer life cycle even with extensive use. Road Smart produces safe, efficient and cost-effective integrated solar street lights and provides you with great after-sales service.View Detail
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How does temperature affect your solar battery? our renewable With the increasing adoption of solar battery storage, we are closer to energy future. By saving excess power generation for later use, homeowners with a solar power system and solar battery storage use less electricity from the utility grid, and can even avoid power outages from the grid system. When you install your own solar battery, you may think about how to maintain and keep it work normally. These days are so hot that some homeowners worry about their solar battery. Because the higher the surrounding temperature is, the harder the batteries need to work. Temperature affects everything living or non-living. Since solar batteries operate on chemical processes, temperature affects them seriously. Temperature affects battery performance in two ways. The standard capacity rating of a battery is based on each cell having an electrolyte temperature of 25ºC (77ºF). Temperatures below the nominal 25ºC (77ºF) reduce the battery’s effective capacity and lengthen the time to restore the battery to full charge. Temperatures above 25ºC (77ºF) will slightly increase capacity but also will increase self-discharge and shorten battery life. Although the capacity of a battery will increase as temperatures rise, any cycle life loss due to operating at higher temperatures is not recoverable. When the temperature is too high, the surrounding insulation and protection around the battery may break down or melt. You may notice these from the battery: bulging, bubbling, emitting gas, sparks or even flames. If it really happens, please quickly remove the battery connection to your home or grid. It may be dangerous. Therefore, homeowners with solar battery storage should learn to take care of their solar batteries and keep them cool in the hot summer. Keeping the solar battery indoors Keeping the battery indoors will help insulate against harshness of temperature changes outside. One of the ideal locations would probably be in your garage. Please avoid installing your solar battery in locations exposed to direct sunlight. This may affect the overall battery performance shorten the battery life. In addition, keep the solar battery indoors will help against other weather elements as well as birds wanting to start a nest above the battery. Batteries also need ventilation Batteries need a decent amount of ventilation, but you don’t need to go overboard. Almost all manufacturers will ask for a location with good ventilation. If your battery is located outdoors, then you do not need to worry too much about ventilation. If it is installed indoors, then you should probably not put too many things in front of it. For example, installing it inside another cupboard. Also, do not forget to keep the solar battery away from debris. Keep the battery away from heat producing appliances You ought to probably put the battery away from other appliances in your home that tends to create heat. This could be your heater, hot water tank, pool heater etc. You would ideally want to reduce the temperature to around 15 degrees. The closer it is to this temperature, the better your solar battery will run. The above talk about the temperature’s effect on solar battery and how to protect them from high temperature in summer. Regular maintenance is necessary to keep them work normally.View Detail
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The Features of Intelligent Lighting System The intelligent lighting system (ILS) is one of the most advanced lighting and energy management systems available today. System intelligence is built into every luminaire, monitoring and reacting to occupancy, pre-selected light levels and changes in ambient daylight levels. The objective of the intelligent lighting system is to offer a unique and special light in the right place with the necessary or ideal intensity. The intelligent lighting system will work automatically in accordance with the pre-selected lighting modes, and these lighting modes will automatically switch according to the pre-selected time. The intelligent lighting system uses advanced electronic technology to intelligently control the illuminance of the lamps in a certain area. When the outdoor light is strong, the indoor illuminance will be automatically lowered, and when the outdoor light is weak, the indoor illuminance will be automatically improved. The indoor illuminance should be always kept near a constant value. Intelligent lighting system has the following functions: loop control, flood alarm, detection of loop current, voltage, power factor, power level, single lamp current and temperature. Intelligent lighting system has the ability to adapt to any type of office, home office, hospital or hotel, providing better clarity in any space and according to the needs of each client. The intelligent lighting system can automatically adjust the illuminance according to the brightness conditions in the house, which not only extends the service life of the lamps, but also saves electricity and contributes to environmental protection. The main reason of the break-down of the light source is the overvoltage of the power grid. The intelligent lighting control system adopts a soft start method, which can successfully control the impulse voltage and surge voltage of the power grid, so that the filament is protected from thermal shock, and the service life of the light source will be extended. Generally, intelligent lighting systems can extend the service life of the light source by 2 to 4 times, which not only reduces the number of light sources that are used, but also greatly reduces the workload of replacing the light source and effectively reduce the operating cost of the lighting system. With the development of domestic intelligent lighting R&D and production technology and the product promotion, intelligent lighting applications in the home field are expected to be popularized. The intelligent lighting system uses intelligent induction to control the lights, which brings a lot of benefits to people's lives. For example, the night mode of the intelligent lighting system in the house is convenient for users. When you wake up at midnight, if you turn on the headlights, it will affect your companion’s sleep, the smart night light can solve this problem for users. A research report pointed out that the combination of intelligent technology, electronic ballasts and other new-type lighting sources and lighting technology will help build a brand-new lighting technology platform. Its application fields range from intelligent home lighting to intelligent urban lighting, which has infinite and broad prospects.View Detail