High Power Density Central Distributed Dual-motor Electric Drive

Shanghai Auto Show Highlights: High-power-density central distributed dual-motor electric motor released.

On April 19, Shanghai Transmission and PanGood released a new generation of electric motor assembly for passenger cars at the Shanghai Auto Show: a central distributed dual-motor drive. At the new product launch conference, the guests were full of expectations and interests about the new products.

As the world's first centrally integrated dual-motor independent drive electric motor product. Compared with the previous generation product, the Z-direction height of the new product is reduced by 39%, and the weight is reduced by 25.3%. At the same time, it has many advantages:

1. Integrated axial field motor and dual motor controller has compact structure, excellent performance, and is suitable for high-performance vehicles

2. The electronic differential speed control is adopted to improve the steering stability and driving safety of the vehicle through independent control of the motor torque.

It is worth mentioning that the "Next Generation High Power Density Electric Motor System" is the core link of the industry chain in the "Energy-saving and New Energy Vehicle Technology Roadmap 2.0". The overall power density of the product has been increased from the original 1kW/kg to 3.15kW /kg to achieve the high power density of the entire product, which is a huge improvement.

The use of centrally integrated dual-motor independent drive electric drive products can also provide customers with more flexible vehicle layouts and easier implementation of drive wheel anti-skid (TCS), electronic differential control (EDS) and direct yaw moment control (DYC). Mainly manifested as:

1. It has a more flexible vehicle layout capability. For instance, rear drives can be arranged in forward and reverse directions.

2. The electric motor has a symmetrical structure and the half-shaft is of equal length, which is conducive to the same rigidity of the left and right motor shafts.

3. Distributed motor, capable of anti-skid control of driving wheels.

4. No need of mechanical differential lock, with good vehicle escape performance.

5. Distributed drive has redundant degrees of freedom control. Therefore, drive wheel torque can be independently distributed and directly yaw torque control. The real-time active safety control of the vehicle and ESP build a double safety guarantee for the vehicle together.

6. The electronic differential can control the torque of the inner and outer driving wheels. Compared with the traditional mechanical differential vehicle, it can obtain a smaller turning radius. The vehicle speed is higher and the roll is smaller during the turning process, giving the driver a more flexible control experience, and the passengers a smoother turning experience.

7. Cooperating with the rear wheel steering, it can further improve the maneuverability of the car at low speeds and reduce tire wear.

Embracing change requires not only calmness, but also tolerance and hard technology support. Just as the axial magnetic flux CDU of PanGood has been one of the world’s first to reach industrialization. Changing directions may lead to huge differences.