The current challenges faced by new energy vehicle motors include: high temperature, vibration and noise, weight and volume, and high speed. In general, the field of new energy vehicles is currently facing several development directions: 800V high-voltage drive motors, wheel hub motors, High power and lightweight motor, and axial motors.

The high-voltage platform is the development direction of electric vehicles in the future. As the main component of the vehicle, the high-voltage platform also plays a key role in the design of the drive motor. How to ensure the safety and reliability of the high-voltage components after the voltage is increased is very important. Whether it is IGBTs and relays used in motor controllers, or insulation systems in motor structures, etc., will be affected and challenged by voltage rise.

2. Wheel hub motor

According to the position of the driving motor, the driving methods of new energy vehicles can be divided into centralized motor drive, wheel side motor drive and hub motor drive.

3. High power and lightweight motor

As the new energy electric vehicle market becomes more and more active, the integrated research on the electric drive system of electric vehicles has begun to enter the vision field of engineers. By integrating the three components of the drive motor, inverter and reducer, it can Realize light weight, high efficiency, miniaturization, reduce cost at the same time, free up space to a certain extent, and facilitate the layout of the whole vehicle.

The in-wheel motor, which installs the drive system in the wheel, further promotes the miniaturization and weight reduction of the electric drive system. With the continuous development of new energy vehicle technology, the integrated design of components has become an inevitable trend.

Through integrated design, on one hand, it can simplify the assembly of the main engine factory and improve the product qualification rate; on the other hand, it can reduce the number of suppliers on a large scale, and can also achieve the purpose of light weight and cost saving.

Compared with traditional radial motors, axial flux motors have more advantages: small size, light weight, high efficiency, high torque and other outstanding advantages. In the field of new energy vehicles, axial flux motors have greater advantages. Industry application YASA, an axial flux motor company in Oxford, England, was acquired by Mercedes-Benz in mid-2021, and will build a factory in Berlin for mass production, which is planned to be used for mass production of new energy vehicles. High efficiency, increased battery life, saving battery costs.

Transmission system advantages: directly reduce the transmission ratio of the gearbox to reduce transmission loss and gear speed; can reduce the cost of the transmission system; can increase the life of the gear; reduce the noise of the motor and gear.

Lightweight advantage: The axial flux motor is used to increase the torque while reducing the weight of the gearbox.

In the future, new energy vehicle motors are gradually moving towards the era of lightweight, high efficiency, and axial flux motors will be one of the best choices in the future.

Compared with the traditional motor material electric laminations, Focus New material is mainly committed to the development of new material SMC (soft magnetic composite material).

Compared with traditional motors, SMC axial flux motors have their unique advantages and characteristics. SMC material is characterized by a nano-scale insulating layer coated with high-purity iron powder. The material is isotropic and can be three-dimensionally formed and magnetically guided. Its powder metallurgy pressing and heat treatment processes are simple. It is easy to process and suitable for mass production, it can press more complex parts, which cannot be replaced by silicon steel sheet. In the drive structure of new energy vehicles, the assembled axial flux motor has a simple and compact structure and is easy to assemble.

Axial magnetic circuit motors applied with SMC materials have the following advantages:

Excellent technology: three-dimensional net shape, high material utilization rate. Winding and off-line is simple, and the slot fill rate is high. Fewer parts, easy to assemble and automate, and easy to recycle parts.

More compact construction: higher power density and lower weight. The axial effective length is shorter, which is easy for system integration design.

Excellent performance: high torque, high power density. The three-dimensional heat conduction is uniform and the heat load is higher. Winding integrated cooling design, better power density. High frequency loss is lower and efficiency is higher.

In the application of new energy vehicles, SMC axial flux motors also have many applications, including: auxiliary motors, electronic water pumps, compressor motors, etc. In industrial applications, it can be used in different fields such as robot servo motors, linear oil extraction motors, elevator traction machines, and high-speed motors for home appliances.