New PV applications: Solar Road
2017-12-18

Recently, the first paragraph of the domestic photovoltaic road Jinan news sparked a hot debate on the PV ring. It is understood that the photovoltaic high-speed pavement is divided into three layers, the top layer is "transparent concrete", this layer directly with the vehicles and pedestrians, PV modules can play a protective role; the middle layer that is, photovoltaic components can be passed Solar power generation; the last layer is the insulating layer, which can play the role of isolated moisture. At present, the pavement has achieved grid-connected power generation, and the electricity generated by this photovoltaic pavement has been connected to the charging pile. The emergence of photovoltaic roads let people see the broad prospects for photovoltaic applications, especially in the era of rapid development of new energy vehicles, the release of a large number of charging pile, if the future of photovoltaic roads can be combined with the charging pile or will give a new The development of energy vehicles and photovoltaic power generation brings new opportunities.



The fantasy of the solar highway


Although the first photovoltaic road only appeared in Jinan recently, the concept of the solar highway was first proposed by a couple of scientists from the United States in 2006. They also set up a company that specializes in the application of solar energy to ground scenes.


After continuous research, in order to realize the idea of Solar Roadway, they developed a kind of tempered glass that can be laid on the ground. This glass panel is embedded with photovoltaic panels, a total of six layers, from top to bottom are: tempered glass, LED light indicator layer, the circuit layer, with recycled materials consisting of the basic ground floor, flood and water storage Floor.


It is envisaged that solar-powered roads using this tempered glass not only generate electricity, but also provide road lighting and traffic instructions, intelligent road surface detection, and electric snow drying. The most amazing is that, according to the final idea, such a solar road will be in the future to achieve wireless charging of electric vehicles. If the above functions can be achieved, then this solar road can be described as a "Sunshine Avenue" it!


The couple's "fantasy" not only aroused the interest of the American people, but also got the attention of the government. Following the Solar Roadway concept, the U.S. couple won more than $ 2 million in IndieGogo crowdfunding and received $ 1 million from the U.S. Department of Energy and the Federal Highway Administration.


With so much support, the solar-powered road paved with this vision faces the problem of high production costs, and currently Solar Roadway's products are hand-made and can not be put into production. The latest news is that Solar Roadway will lay its solar pavement on the famous U.S. Route 66.


Solar road swept the world



Since the introduction of Solar Roadway concept by couple of scientists in the United States, the solar energy highway has attracted the attention of many countries in the world. And the real solar energy highway has started to appear all over the world, almost sweeping the globe.


In October 2014, the world's first solar road was set up, which was made up of a concrete module with solar cells covered in a thin layer of toughened glass of only 70 meters in length. It was a bicycle lane and only Allow pedestrians and bicycles to get on the road. Stunningly, the highway costs as much as 3.5 million euros (about 23 million yuan), and the cost of a meter alone exceeds 300,000 yuan. It is simply a solar-powered road with money.


Two years later, France announced that it will build 966 kilometers of the longest solar-powered road in the world with a total mileage of 5 years across France. If the project is completed, the solar road will provide solar power to 5 million people in France. The project partner is Colas Group, the French leader in transport infrastructure. They proposed the solution of replacing the toughened glass with Wattway's film. It is understood that Wattway film is only 7 mm thick, which not only can waterproof, but also can withstand rolling. Colas claims that the film has a 10-year lifespan and can last for 20 years even in crowded, under-stream parking lots or neighborhoods.


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