Motor, as the “heart” of new energy vehicles, its technical innovation directly drives the green transformation of the whole industry.
In recent years, domestic and foreign motor technology competition is fierce, Chinese enterprises such as BYD, Ningde Times with permanent magnet synchronous motor technology to dominate the market, while the European and American enterprises are in the field of rare-earth motors to actively explore. Facing the pressure of environmental protection and upgrading of consumer demand, high sales, lightweight and intelligent motor technology has become the future trend! According to the development at home and abroad, its development can be summarized as the following 4 major development directions!
1, high sales rate and high performance of the pursuit of the very high
Wide bandwidth semiconductor material innovation: silicon carbide (SiC) and gallium nitride (GaN) and other wide bandwidth semiconductor materials, because of its low conduction loss, high temperature and high voltage resistance and other characteristics, will be in the new energy automobile motor drive system to get a wider range of applications, and significantly improve the efficiency and reliability of the motor. According to industry data, the efficiency of automotive motor drive system using SiC technology can be increased by more than 10%, while significantly reducing the volume and weight.
Continuous optimization of motor topology: axial flux motors are gradually becoming the new favorite in the field of new energy vehicles due to their unique design, which realizes the perfect combination of high power density and low weight. In addition, switched reluctance motors (SRMs), as high-selling motors without rare earth materials, are expanding their application scope through the deep integration of power electronics and Internet of Things (IoT) technologies, showing great potential especially in terms of high energy efficiency and low cost.
2, lightweight and miniaturization technology breakthroughs
The lightweight process of hub motor: hub motor technology realizes great simplification of the structure by directly integrating the drive motor into the wheel, but its weight and heat dissipation problems have been the bottleneck restricting its development. In the future, with the application of lightweight materials (such as carbon fiber composites) and the innovation of thermal management technology, hub motor is expected to achieve further weight reduction and high pin heat dissipation, and improve the performance of the whole vehicle.
R & D and application of new materials: In addition to carbon fiber composite materials, aluminum alloys and other lightweight and high-strength materials will also be more widely used in new energy vehicle motors. These materials not only reduce the weight of the motor, but also improve the rigidity and durability of the structure.
3, the deep integration of intelligence and network connectivity
Wide application of intelligent control algorithms: with the continuous maturity of model predictive control (MPC), adaptive control and other advanced algorithms, the control accuracy and response speed of new energy vehicle motors will be improved, enabling real-time adjustment of the motor's operating state and optimization of energy distribution, and realizing higher energy efficiency and better driving experience.
Deep integration of Telematics: In the future, it will be deeply integrated into the Telematics system, realizing information sharing and cooperative control among vehicles. This will not only help improve overall energy efficiency and protection, but also provide vehicle owners with a more convenient and personalized service experience. Such as through the vehicle networking platform to collect and analyze vehicle operation data, can predict and solve potential failure problems in advance, improve vehicle reliability and service life.
4、Reduce dependence on rare earth materials and sustainable development
Innovative application of Synchronous Reluctance Permanent Magnet Motor: Synchronous Reluctance Permanent Magnet Motor (SynRM-IPM) combines the advantages of Permanent Magnet Synchronous Motor (PMSM) and Synchronous Reluctance Motor (SRM) to reduce the use of rare-earth materials while maintaining a high sales rate. This type of motor shows excellent performance at both low and high speeds, and is one of the important development directions for future motors for new energy vehicles.
Continuous exploration of new material research and development: In order to reduce the dependence on rare earth materials and realize sustainable development, research institutions and enterprises around the world are working on the research and development of new permanent magnet materials. For example, new permanent magnet materials such as ferro-nitrogen compounds and ferrite magnets are expected to gradually replace rare earth permanent magnet materials and reduce production costs.
