随着城市交通状况的日渐恶化和环保呼声的不断高涨,电动自行车将受到越来越多国家消费者的欢迎。 80年代中期,欧洲一些国家推出了助动自行车,它大多采用二冲程小马力汽油发动机,因其燃烧不充分,排污甚至超过小汽车,所以发展受到了限制。80年代后期,欧美开始发展电动自行车,即在自行车安装电动机和高效蓄电池,驱动自行车前 With the deteriorating urban traffic conditions and rising environmental protection voices, electric bicycles will be more and more countries welcomed by consumers. In the mid-1980s, a number of European countries introduced mopeds. Most of the mopeds used two-stroke small-horsepower gasoline engines. Due to their inadequate combustion and the emission of sewage even surpass that of cars, the development has been limited. The late 1980s, Europe and the United States began to develop electric bicycles, that is, the installation of electric motors and efficient bicycle batteries, driving the bicycle before