At the first press conference of Xiaomi Automobile, Lei Jun summed up in one sentence, "We have to do at least 100" first, only, and most ", so it is not a problem for me that friends occasionally cut off one or two Hu." The technical links of the press conference mainly involved five fields: electric drive, battery, large die casting, intelligent driving, and intelligent cockpit. Among them, the world’s highest speed motor, 9,100 tons of large die casting and other three electric and manufacturing technologies all made Xiaomi’s eyes shine in the industry for technology-based cars. In the second half of the press conference, Lei Jun also spent an hour and a half talking about SU7 design, safety, performance and other key indicators. Compared with the new car conference, the price was not announced. But Lei Jun said: "100 degrees, ternary lithium, Ningde era" three cars together are more than 400,000 yuan. So don’t shout 99,000 anymore, 149,000 is unlikely, still have to respect technology ", Lei Jun ruled out the price below 149,000.
motor
Xiaomi has released three self-developed motors, HyperEngine V6/V6s and HyperEngine V8s. The HyperEngine V6/V6s super motor has a maximum speed of 21000rpm, of which the HyperEngine V6 has a maximum power of 299PS and a maximum torque of 400N · m. The HyperEngine V6s has a maximum power of 374PS and a maximum torque of 500N · m. The HyperEngine V8s has a maximum speed of 27200rpm, an output power of 425kW and a peak torque of 635N · m. It adopts the industry’s first 960MPa highest strength special silicon steel sheet and is expected to be on the bus in 2025.
Battery
Xiaomi self-developed the world’s first CTB integrated battery with inverted cells. The battery capacity can reach up to 150 degrees, and the theoretical CLTC cruising range is as high as 1200km +. The CTB integrated battery adopts two-in-one floor cover, cell inversion, multi-functional elastic interlayer and minimalist wiring harness design, which makes the integrated efficiency reach 77.8%, the overall improvement is 24.4%, and the height of 17mm is released. The double large-sided strong cooling solution ensures that both sides of the battery have heat dissipation plates, and the cooling area reaches the largest in the same class of 7.8m 2, achieving a cooling effect of 4 times the industry average. "Challenge the king of winter trams", Lei Jun said, Xiaomi aspires to be the king of winter electric vehicle battery life. After the new car is launched, everyone is welcome to test it.
Large die casting
Xiaomi HyperCasting, a 9100t super die-casting technology developed by Xiaomi, has become the only domestic automaker to independently develop both a "large die-casting equipment cluster" and a "die-casting material".
In terms of equipment innovation, the cluster equipment covers an area of 840m 2, with a total weight of 1050t, which is equivalent to the size of two basketball courts, and the clamping force reaches 9100t at the top of the industry. In terms of material research and development, the optimal alloy formula is selected from 10.16 million formulas to ensure the perfect combination of strength, toughness and stability. Self-developed high-strength, high-toughness and heat-free environmentally friendly die-casting material "Titan Alloy". Focus on the pain point of "high maintenance cost" of integrated die-casting, and adopt a three-stage repairable design: integrated die-casting rear floor + medium and high-speed collapse zone + low-speed collapse zone. In medium and low-speed collisions, there is no need to replace large die castings; in high-speed collisions, this design can meet the 90km/h rear collision mark.
Smart driving
Adaptive zoom BEV technology, road large model and super-resolution occupancy network technology constitute the three key technologies of Xiaomi’s intelligent driving. The industry’s first adaptive zoom BEV technology can zoom like the human eye, and can adaptively call different perception algorithms according to different scenes. Its perception grid can reach a minimum of 0.05m and a maximum of 0.2m, the recognition range extends from 5cm to 250m, the parking scene is more accurate, the urban scene can be seen wider, and the high-speed scene can be seen farther.
In terms of obstacle recognition, Xiaomi’s super-resolution occupancy network technology implementation provides unlimited types of special-shaped obstacle recognition. Compared with the traditional occupancy network, which relies on natural language models to describe obstacles as squares, Xiaomi’s innovative super-resolution vector algorithm can simulate all visible objects into three-dimensional objects with continuous surfaces, thus improving the recognition accuracy to 0.1m, which is twice the industry level. The self-developed one-button noise reduction function completely eliminates the impact of rain and snow on the recognition, greatly reducing the probability of false recognition. On the hardware side, the system is equipped with top-of-the-line configuration, including two NVIDIA Orin high-computing power chips, with a comprehensive computing power of up to 508TOPS. The sensing hardware includes 1 lidar, 11 high definition cameras, 3 millimeter wave radars and 12 ultrasonic radars (Max version models). Lei Jun stressed that the goal of Xiaomi Smart Driving is to enter the first echelon of the industry in 2024, and it is expected that the city NOA will land in 100 cities in 2024. The longer-term goal is to be the first in the industry.
Smart Cockpit
The smart cockpit is Xiaomi’s "comfort zone", and it is the last part of Xiaomi’s "people, cars, and home ecology". In addition to the basic driver interconnection function, there is also a rich car and machine ecology. The first five-seat five-tone zone interaction function supports stable and cooperative wake-up of multiple devices. Almost all operations can be completed through the voice control of "Xiao Ai Classmate", and the core functions support offline use. The car start-up speed reaches 1.49 seconds. The industry’s first cockpit system streaming OTA upgrade technology realizes the upgrade while downloading. Mijia devices have no feeling of getting on the bus. At present, Xiaomi’s smart cockpit has supported 1000 + Mijia devices, automatic discovery, password-free access, and can set up automated scenes. Xiaomi also opens a unified standardized interface and rich standard protocols, and the built-in CarIoT expansion base supports a variety of devices to access, such as smart fragrances. Four sets of Pin point power supply communication design expandable physical buttons. In addition to Xiaomi users, "Apple users can also have a silky experience", Xiaomi fully supports wireless CarPlay car, and provides iPad-exclusive accessories and exclusive applications on the rear expansion screen.
appearance
Mi SU7 creates three body colors of bay blue, elegant gray and olive green, bringing a beautiful experience that originates from nature and returns to nature. With the goal of "design that can stand the test of time", it was jointly completed by BMW’s first Chinese designer Li Tianyuan, former Mercedes-Benz German headquarters senior exterior designer Qiu Zhen, and former BMW senior interior designer Shin. 28 degrees of front windshield, 17 degrees of large back and continuous curvature of the whole car profile G4, plus borderless water drop rearview mirror and goose warm stone lidar design, after 1000 + digital model simulation tests and 300 + mud model adjustments, the Xiaomi SU7 "world’s lowest wind resistance for mass-produced cars" – 0.195Cd, which combines extremely low energy consumption and ultra-high battery life performance. The body size of the Xiaomi SU7 is 4997mm x 1963mm x 1440mm, the wheelbase is 3000mm, the trunk volume is 517L, and the front trunk volume is 105L.
performance
Equipped with the HyperEngine V6/V6s super motor jointly developed by Xiaomi. The Xiaomi SU7 Max version adopts dual-motor all-wheel drive, peak torque up to 838N · m, total power up to 495kW, maximum speed up to 265km/h, 0-200km/h acceleration is only 10.67 seconds, and zero hundred acceleration is as fast as 2.78 seconds (minus start time). It adopts front and double fork arms rear five-bar independent suspension, equipped with Xiaomi Blast intelligent chassis, equipped with CDC damping variable shock absorber, Bosch ESP10.0 body stability system, Bosch DPB brake controller, Brembo four-piston fixed caliper and many other super configurations, turning radius 5.7 meters, 100-zero braking distance 33.3 meters.
safety
In terms of important active and passive safety, the Xiaomi SU7 is equipped with an armored cage-type steel-aluminum hybrid body, with high-strength steel and aluminum alloys accounting for 90.1% of the body, and the torsional stiffness of the whole vehicle reaches 51000N · m/deg, fully meeting the European and European double five-star safety standards. Xiaomi’s CTB integrated battery technology has state-of-the-art heat dissipation and thermal insulation design, as well as the world’s most stringent battery safety testing and 14-layer hard core physical protection, as well as Xiaomi Car Cloud Collaborative Safety Warning System and other technical blessings, creating an all-round safety system without dead ends, and at the same time has excellent battery life.
The Xiaomi Mi SU7 has two battery life versions, with a range of 668km and 800km under CLTC conditions, respectively. The MAX version uses 800V super fast charging, and the battery life can reach 220km after 5 minutes of charging, truly optimizing performance and efficiency. Global security protection, from the bottom to the application layer, from single device to Inter-App communications, is equipped with 16 active security configurations and strict privacy security protection.
In 1003 days, Xiaomi Auto finally ushered in its first official release. "3,400 engineers, over 10 billion R & D investment, more than 10 times the investment". Xiaomi handed in its first answer sheet at the end of 2023 when it rolled up to Flying. From Wei Xiaoli in the car 2.0 era to "Hua Xiaomei" in the 3.0 era, building a car has never been an easy task. As a contrast, NIO delivered ES8 for the first time in June 2018. Its 2016-2018 R & D expenses for three consecutive years were 14.65, 26.03, and 3.998 billion yuan respectively, with a cumulative total of 8.066 billion yuan. As of the end of 2018, there were 808 employees worldwide. It can be seen that in terms of funds, the scale of tens of billions is basically the basic investment of a new enterprise, but in terms of team size, Xiaomi has indeed expanded rapidly. Therefore, Lei Jun also repeatedly "warned" the price of SU 7, lowering users’ price expectations.
In addition to the previous "may be a bit expensive", at the press conference, when introducing the SU 7’s zero-hundred acceleration, maximum speed and maximum power compared with Taycan Turbo and Model S, Lei Jun once again sounded the "price alarm", "Speaking of this, I believe everyone has a basic understanding of what kind of car SU7 is, so everyone really don’t call it 99,000, this is impossible, 149,000 is also unlikely." At present, in the car industry where prices are flying, Lei Jun obviously does not want to take the "cost-effective" route. After this technical conference, Xiaomi’s technology can support the high price of SU 7, depending on the market feedback. (Source: Xiaomi Auto)