Fast Technology reported on January 11 that Lei Jun, the founder of Xiaomi, issued a detailed introduction to the Xiaomi car SU7 intelligent chassis.
Lei Jun said that the Xiaomi car intelligent chassis has the world's leading hardware configuration, for which Xiaomi automotive engineers through strong structural design and regardless of the cost of materials, for the Xiaomi SU7 to create a torsional rigidity of up to 51000N·m DEG body, while making its center of gravity as low as 443mm, front and rear counterweight close to 50:50.
At the same time, the Xiaomi Su7 opted for a front double ball joint double wishbone rear five-link independent suspension, and an all-aluminum suspension link was adopted to reduce the unsprung mass.
This suspension structure can control the wheels more effectively under today's advanced technical level, which has also become the best basis for the excellent handling and comfort of the Xiaomi Su7.
In addition, Xiaomi SU7 is equipped with a closed air spring system jointly developed with Tuopu Group and a CDC damping variable shock absorber provided by ZF, in which the closed air spring system can increase the adjustment speed by 100% compared with the traditional open system, and the powerful adjustment ability makes both comfort and handling.
In terms of braking system, Xiaomi SU7 is equipped with Brembo front 4-piston brake calipers, matching the world's first Bosch DPB+ESP100 full decoupling braking system, not only makes the Xiaomi Su7 100-0km h braking distance as low as 333M, which brings a more responsive and linear braking feeling; The quadruple safety design of the braking system greatly reduces the risk of brake failure.
In addition, the Xiaomi smart chassis uses the best parts in the cost range, and also gathers the world's top manufacturers such as Continental, ThyssenKrupp, Nexteer, Benteler, etc., and the overlap rate between the components of the Xiaomi smart chassis and the BBA** business has reached 67%.
Xiaomi's full-stack self-developed chassis control algorithm.
The core of Xiaomi's intelligent chassis is a full-stack self-developed chassis control algorithm, which allows vehicle driving to have the ability of full-dimensional perception and global collaborative control, which can not only perceive changes in road conditions ahead in advance, but also respond quickly in milliseconds, realize global collaborative control of the body, prepare the vehicle in advance, effectively reduce safety risks, and far exceed the passive chassis control of traditional cars
The first is the road adaptation, which can realize the ability to cross bumps and walk on flat ground. Based on intelligent perception, it can detect the road surface conditions at a distance of up to 150 meters, control the damping of the CDC shock absorber at a frequency of 1000 seconds in advance, and dynamically adjust the torque in real time with 500 seconds to calmly cope with complex road surfaces such as speed bumps and slippery roads.
The second is the adaptive cornering, which can keep the vehicle stable when cornering or starting and stopping at high speeds through real-time control of motor torque and CDC damping. Neither "pushing" nor "tailing", high-speed cornering is fast and stable;
The intelligent aerodynamic system can automatically adjust the angle of the electric tail, the opening and closing angle of the active air intake grille and the height of the air spring according to different speeds. It provides better downforce and grip at high speeds, and reduces air resistance during daily driving, allowing the Xiaomi Mi Su7 to have more extreme handling performance and battery life.
Finally, there is the active flank support, which actively inflats the seat when cornering, providing reverse support for the body to roll. When the vehicle is cornering at high speed, the side of the seat wing on one side can be 1It is raised by 10 mm in 5 seconds to effectively support the driver's body.
The official said that the Xiaomi intelligent chassis is a set of ultra-intelligent, adjustable, and adaptable chassis systems to various road conditions, bringing users an unprecedented excellent driving experience.