新能源汽车（New energy vehicle）.docVIP

新能源汽车（New energy vehicle） Charging stations adopt centralized charging, which can charge more than one new energy vehicle at the same time. It is often used for charging new energy vehicles such as environmental sanitation and public transportation. Charging piles are mainly distributed in the residential areas or work areas near the parking lot, mostly for private use of new energy vehicles charging. At present, Chinas pilot cities charge less equipment, and equipment distribution is more concentrated, consumers charging inconvenience, charging facilities construction progress lagging behind, dragged down new energy vehicles promotion. We analyze the slow progress of charging facilities construction, mainly due to various reasons: (1) the lack of national standards leads to the conclusion that the charging model is inconclusive There are two kinds of energy supply modes for new energy vehicles, which are charging type and switching mode, and there is no unified opinion on what is the main type and what is the time. This problem involves the game power group and vehicle manufacturers, the national power and Southern Power advocated mainly for electricity, charging auxiliary, centralized charging and unified distribution; most automobile manufacturers claim charge, energy supply mode for electric auxiliary. In addition, the lack of standards has also led to the car manufacturers are not unified charging interface, communication protocol, arrangement mode, charging equipment are not universal. Comparison of advantages and disadvantages of energy supply model Energy supply model advantages and disadvantages Charging slow charge current is about 15A, equipment requirement is low, installation cost is small, and it is suitable for cell matching. Time consuming, usually charging 5-10 hours. Fast charging time is short, generally need to charge 20 minutes -2 hours. 1, charging current is generally more than 150A, equipment requirements, installation costs; 2, to the batter