An electric car is a vehicle which gets power from one electric motor or more, and an electric car use electrical energy to store batteries or another energy storage device. The developmental history of electric cars is very long, and the first automobile all over the world was an electric car. However, electric cars had two terrible disadvantages: the problem of energy technology and mileage limit around 20 century. The problems made electric cars disappeared from citizens eyes for a while. Until recent decades, gas’ price was more and more expensive, and the environment pollution is more and more terrible; government started to focus on the development of electric cars which is green, and use electric as fuel. Right now, the problem of energy technology and mileage limit is solved basically even though there are still some problems that need to face. In modern society, electric cars are more and more popular. According to Triangle Business Journal,” Chris Bagley stated that volume was low, but electric car sales growth was brisk. In the early 2000, Toyota Priuses and other electric cars only sold out about 800 to 1000 EVs. At the first month of 2013, there were many electric cars selling out such as Nissan’s leaf and Chevrolet Volt. They were 6800 and 24500 vehicles. And the charging station was the same situation. Right now there were much more charging stations then before. Electric cars sold volume jump very fast. Electric cars are much better performance than gas-power cars in main three fields: pollution, economic, and energy.…