随着社会的发展、人民生活水平的提高,城市内的汽车越来越多,它不仅消耗着大量的石油,而且造成严重的空气污染和噪音污染。于是,人们开始注意研制不燃油、少污染的交通车辆——电动车辆。(一)电动车辆及其发展意义电动车就是以电为动力源的车辆。从这个广义的定义上说,电机车、有轨和无轨电车都属于电动车。但这些电动车是靠车身外的供电来获得动力的。现在 With the development of society, the improvement of people’s living standards and the increasing number of vehicles in cities, it not only consumes a large amount of oil, but also causes serious air pollution and noise pollution. As a result, people began to pay attention to the development of non-fuel oil, less polluting traffic vehicles - electric vehicles. (A) of electric vehicles and its development significance Electric car is a vehicle powered by electricity. From this broad definition, electric locomotives, rail and trolleybuses are all electric vehicles. However, these electric vehicles rely on the power supply outside the vehicle to obtain power. just now