电动汽车分类及优缺点（Electric vehicle classification and advantages and disadvantages）.doc

电动汽车分类及优缺点（Electric vehicle classification and advantages and disadvantages） Six categories and advantages and disadvantages of electric vehicles Electric vehicles include: hybrid electric vehicles (HEV), pure electric vehicles (BEV), fuel cell vehicles (FCEV), hydrogen engine vehicles and gas-powered cars, mellow cars, etc Hybrid car Hybrid power is the type of vehicle that USES conventional fuel and is equipped with an electric motor/engine to improve low-speed power output and fuel consumption. Depending on the fuel type, it can be divided into two types: gasoline hybrid and diesel. At present, the mainstream of hybrid vehicles in the domestic market is the gasoline hybrid power, and the diesel hybrid model in the international market is developing rapidly. Advantages: 1. The maximum power of the internal combustion engine can be determined by the power of the average requirement after using the hybrid power. At this time, it is in the optimal working condition of low fuel consumption and low pollution. When the power of large power internal combustion engine is insufficient, the battery should be added. When the load is low, the power of the spare power can be charged to the battery, and the battery can be recharged continuously because of the sustainable work of the internal combustion engine, which is the same as a regular car. 2. Because of the battery, it can easily recover the energy of braking, downhill and idle speed. 3. In the busy urban area, the internal combustion engine can be shut down, driven by the battery alone to achieve zero emission. 4. With the internal combustion engine, it is very convenient to solve the problems encountered by pure electric vehicles such as air conditioning, heating and defrosting. 5. You can make use of the existing gas stations to fill up the gas. No further investment. 6. The battery can be kept in a good working state. It shall not be charged, overlaid, prolonged its service life, and lower the cost. Disadvantages: the