A smart, low-cost AC charging system for electrical vehicles

For the industry development of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of the construction of charging facilities. Firstly, this paper describes the importance of AC charging piles for electric vehicle development. And then, the structure and the problems of the current AC charging pile are discussed. After that, a new charging system for electric vehicles is given and its structure, functional block diagram, charging payment process and system reliability are discussed in detail. By studying existing AC charging piles on the market, the paper presents a smart, low-cost AC charging system to reduce the cost investigated by power grid companies and operational bodies when constructing a large number of AC charging piles. Compared with the conventional one, the proposed system has prominent features of low cost, small footprint and low investment.