Electric bicycles of different constructions

Electric bicycles are based on batteries as auxiliary energy sources. It is a mechatronics personal vehicle equipped with motor, controller, storage battery, turning handle and other control parts and display instrument system.

Common structure
Most electric bicycles use a hub-type motor to directly drive the front or rear wheels to rotate. These in-wheel motors are matched with wheels with different wheel diameters according to different output speeds. It is used to drive the whole vehicle and the speed can reach 20km/h. The shape of these electric vehicles is different from the location where the battery is installed. But its driving and control principles have similarities. This type of electric bicycle is the mainstream of electric vehicle products.

Specially constructed electric bicycle
A small number of electric vehicles are driven by non-hub motors. These electric vehicles use side-mounted or columnar motors, mid-mounted motors, and friction tire motors. Generally, the weight of the electric vehicle driven by this motor will be reduced, and the efficiency of the motor will be lower than that of the wheel hub. In the case of the same battery energy, the whole vehicle using these motors will generally reduce the continuous mileage of the wheel-type vehicle by 5%-10%.