关键词: 新能源汽车；充电桩；直流充电；大功率充电；小功率直流充电；发展趋势

Abstract: As the permeability of new energy vehicles has been further improved in recent years, the importance of DC charging as a fast energy replenishment method has become increasingly prominent. At present, according to different energy supplement scenarios, the main DC charging modes of electric vehicles include DC charging, high-power DC charging and low-power DC charging. Based on in-depth research on the product and technology planning of 15 enterprises such as passenger cars, commercial vehicles and electric charging operation, combined with standard development, national and local policies and macro situation, this paper analyzes and concludes the development direction of electric vehicle DC charging: High-power DC charging will mainly be used for high-end models; Low-power DC charging scenarios will be developed in specific scenarios, such as service providers and community public DC charging scenarios, and will be developed according to the popularity of V2G technology. In terms of charging power, the vehicle model development will gradually upgrade from models supporting charging power of less than 100 kW to models supporting charging power of more than 180kW. The mainstream charging power of pile enterprises will also be increased to 120 kW～180 kW, and charging piles with higher power of 240kW and 360kW will be equipped.

Key words: New energy vehicles; Charging piles; DC charging; High-power charging; Low-power DC fast charge; Development trend