4. How do the “Trilogy” of direct drive motors, wheel motors, and hub motors play?
1 At present, the market advantage is direct drive motor + traditional axle. The traditional axle is based on engine drive, which meets the requirements of motor sports, that is, the change of vehicle speed, vehicle motion stability and frequent vehicle bumps. The Dongfeng Canna Axle of the direct drive motor can answer these questions.
2 wheel motors are equipped with axles. BYD and Changjiang Automobile have tried to promote the application of wheel motors. However, in terms of the principle of motor sports, the wheel-side motor can't answer the axle, how does it take advantage of the traditional axle?
How does the 3 hub motor reduce the drive? There is a very large direct drive torque. The impact of the wheel hub motor on the road is very large, and how can reliability and durability be guaranteed? How does the hub motor overcome the bumps in the car? The traditional axle is omitted, but its function cannot be saved.
Hubei Tate Electromechanical Co., Ltd. introduced its technology from the Netherlands (e-Traction). Founded in 1981, it is a pioneer in the development of wheel hub motors and has more than 200 invention patents. It is tested on buses in 11 cities in 8 countries in Europe, with a maximum running time of more than 9 years.
Seriously think about it, the trial has been more than 9 years, still trial, since it is trial, 3 cities in each city in 11 cities, the cumulative will not exceed 33 buses. When it comes to China, it will be mass-produced to 5,000 vehicles. It seems logically unreasonable? The pure electric bus that drives the motor + traditional axle is the most conservative estimate of more than 200,000. Dongfeng Canna Axle, which is a direct-drive motor, is not widely used.
The core technology is accumulated by time. How do the three-part trilogy of direct drive motors, wheel motors, and hub motors play? Have to practice steadily, don't rush to say straightforward, who will replace who, who will subvert.
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