Research and Design of DC Charging System for Electric Vehicle

New energy electric vehicles have low energy consumption and do not directly produce gas pollution, and have gradually become the main research and development target of China's auto industry. Charging piles are one of the main sources of energy for electric vehicles, and the DC charging piles output adjustable DC power, and the adjustment range is large, which can directly achieve the requirements for fast charging of the power battery of electric vehicles. This paper first introduces the development status of charging piles, then analyzes the principle of DC charging piles, and designs the hardware and software of DC charging piles. The safe and efficient DC charging pile system has laid a good foundation for the development of electric vehicles in China.