Shulou(Shulou.com)11/24 Report--

CTOnews.com, December 11, according to the official news of Hongqi Automobile, the blasting speed of the high-speed motor rotor assembly independently developed by the Electrical and Mechanical Drive Development Department of Hongqi Research and Development Institute has reached 34000 r / min, which is 60% higher than that of Hongqi's existing products, breaking through the industry limit, marking a new level of high-speed electric drive system and will greatly enhance the vehicle charm of Hongqi products.

▲ carbon fiber rotor, Tuyuan Hongqi according to introduction, motor rotor assembly blasting speed test is an important means to test the maximum critical speed of the rotor, representing the limit speed operation capacity of the motor rotor. The highest speed of the high-speed electric drive product of a foreign leading T company has reached 19000r / min, and the speed breakthrough of 34000 r / min in the motor rotor assembly test of the R & D Institute has reached the leading level in the industry.

CTOnews.com learned that high-speed, as the core development trend of the electric drive system, can effectively reduce the motor volume, reduce the moment of inertia, enhance the dynamic response, greatly improve the power density of the drive motor, and realize the motor miniaturization and lightweight. However, high speed brings a series of technical challenges such as high centrifugal force and high heating, which puts forward high requirements for motor rotor design, application of core materials, low loss optimization and so on.

To meet the difficulties, the Electrical and Mechanical Drive Development Department has set up a special research team to develop a high-speed electric drive system relying on a platform technology research project, in-depth benchmarking analysis of foreign high-speed electric drive technology, firm independent research and development, and innovative breakthroughs. Master the design method of key parameters of carbon fiber sheath from scratch, apply the carbon fiber wrapping technology scheme of rotor assembly for the first time, design a new rotor topology and break through the design problems of high-speed rotor. And successfully trial-produced the prototype.

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