a hub motor technology
-wheel motor technology, also known as a wheel built motor technology, which is most characteristic of the power transmission and the brake device are integrated into the hub, so the mechanical portion of the electric vehicle greatly simplified. Wheel motor technology is not new, as early as 1900, Porsche produced the first front wheel motor equipped with an electric car in the 1970s, this technology has been used in mining trucks and other fields. For wheel motor passenger cars used, Japanese manufacturers to carry out research and development for the technology earlier, the current leader, international auto giants including General Motors, Toyota, are also all been involved in the technology. Currently there are own-brand car makers began the development of this technology, in the 2011 Shanghai auto show Ruiqi X1 extended-range electric car on the use of in-wheel motor technology. Advantages and disadvantages of
wheel motor
1 advantages: a large number of transmission components are omitted, so that the vehicle simpler structure
2 advantages: to achieve more complex driving manner
three advantages: ease of using a variety of technologies of new energy vehicles
one disadvantage: increases the moment of inertia of the unsprung mass and the hub, have an impact on vehicle handling
2 drawbacks: limited electrical braking performance, to maintain the braking system operation needs to consume a lot of power
compared to a centralized power of the motor drive, in-wheel motor technology has great advantages it is more flexible layout, does not require complex mechanical transmission system, but also its own significant deficiencies, such as seals and starting current / torque balance between, and a differential drive wheel steering problems, etc., if the project solve these problems, in-wheel motor drive technology will have broad prospects in the future of new energy vehicle.