Not long after the Xiaomi car launch conference ended, Mr. Lei completely presented all the information about Xiaomi SU7 from the inside to the outside during the 3 hours he spent on the stage. Now let us review the technical capabilities of Xiaomi SU7 in all aspects that dare to shout "Are Xiaomi far ahead?"

Appearance design features: Currently the mass-produced model with the lowest drag coefficient.

In terms of body size, the length, width and height of the vehicle are 4997/1963/1440mm, and the wheelbase is 3000mm. The wheel-to-axle ratio of 3 times, the wheel height ratio of 2 times and the aspect ratio of 1.36 times create a sporty proportion. The 28° front windshield + 17° fastback rear + G4 continuous curve create a dynamic silhouette. At the same time, after adjustments to details such as frameless rearview mirrors, lidar, semi-hidden door handles, and 8 sets of air ducts + 17 air outlets throughout the body, the vehicle's wind resistance coefficient is 0.195Cd, surpassing the former champion Geely Galaxy E8 (0.199Cd), becoming the mass-produced model with the lowest drag coefficient currently on the market.

In terms of detailed design, the vehicle's features also include water drop headlights that resemble a "meter" light source, halo taillights composed of 360 light-emitting elements, and an electric rear spoiler with a maximum downforce of 130kg. In terms of color, SU7 provides three colors, namely Gulf Blue, Elegant Gray, and Olive Green. Each color also has corresponding limited customized color versions of Xiaomi 14, Xiaomi 14 Pro and Watch S3.

Interior design features: three colors, interior fabrics are environmentally friendly and harmless.

Next, let’s talk about the design features inside the cockpit. The entire cockpit adopts a wrap-around design, and the three interior colors are Galaxy Gray, Twilight Red, and Obsidian Black. The interior materials have all passed OEKO-TEX (textile industry standard certification system) certification to ensure that the interior materials are of the correct quality. Harmless to humans.

The diameter of the three-spoke D-shaped sports steering wheel is 363mm, and the minimum turning radius of the vehicle is 5.7m. Although it is a general trend to simplify the complex and integrate more and more functional settings into the screen, SU7 still retains some physical buttons as much as possible, including the 50W mobile phone wireless charging in the central channel and the four behind the one-button start button. The buttons control the air conditioning temperature, air volume, tailgate switch and suspension height adjustment respectively. There are magnetic interfaces around the screen, and a dedicated car control keyboard can be added at the bottom to meet the finger touch requirements of real buttons.

The sound system of the entire cabin includes 23 speakers and 2 main driver headrest speakers, which can achieve a 7.1.4-channel Dolby Atmos sound field effect. Headrest speakers are becoming more and more popular now. When other passengers in the car are immersed in music, the driver can receive navigation announcements through the headrest speakers alone without disturbing each other.

12-way power-adjustable sports seats are standard on both configuration versions. The seats are covered with Nappa full-grain leather and are filled with 3D-Mesh mesh support + 15mm memory foam + high-density PU foam filling material. The height of the support is increased to 135mm to achieve excellent ergonomic design. The Max version of the seat also adds an active side support function. When the vehicle turns, inflate is inflated into the side wings of the seat, and the height of the side wings can be adjusted by about 10mm to provide better side support. There are 7 airbags distributed throughout the cockpit, of which the length of the side curtain airbags is 2040mm.

In terms of space, the glass area of the entire cockpit reaches 5.35 square meters. The largest and most transparent part is the panoramic canopy. The entire canopy is silver-plated, which can isolate 99%+ of ultraviolet and infrared rays, so there is no worry about exposure to the sun. The transparent design not only creates a spacious feeling visually, but is also quite accomplished in terms of actual size. The vertical space in the front row is 1012mm, and the knee clearance in the rear row is 105mm. You can see a more intuitive space experience in the video at the end of the article. exhibit.

In terms of storage space, SU7 has a 517L trunk with a conventional depth of 1136mm, which can be increased to more than 2m after the second row of seatbacks are folded down. The space is already very large. This is not over yet. Thanks to the structural optimization of the front part and the inclined radiator design, the front of the SU7 also has a 105L front trunk, which is much larger than the Porsche Taycan (84L) and Model S (89L). .

Xiaomi's ThePaper OS smart cabin system can achieve cross-terminal interaction.

In terms of smart cabin hardware, the SU7 center console contains 3 screen hardware:

1. 56-inch HUD head-up display (10°x3.6° wide viewing angle, 1500:1 contrast ratio, 13000 nits brightness)

2. Flip instrument display system including 7.1-inch screen

3. 16.1-inch 3K large screen (aspect ratio 16:10, 91.7% screen-to-body ratio, 1024 levels of dynamic dimming)

The smart cabin system is built-in the latest and most powerful Qualcomm Snapdragon 8295, the car-grade chip currently in mass production cars, with a computing power of up to 30TOPS. System software is Xiaomi’s strength. It is equipped with Xiaomi’s self-developed Xiaomi HyperOS system, which has the characteristics of fast startup, fast upgrade, and convenient operation. Based on Xiaomi's strong consumer electronics product ecosystem, SU7 also has a strong interconnection ecosystem that spans many aspects of the human and car family. The system also specifically considers account security. When logging in to different user accounts, the customized layouts of each account (desktop layout, sitting posture, driving habits, etc.) are independent of each other and invisible to each other. Private data will also be automatically isolated when the vehicle is sent for repair. Personnel cannot view or recall the information.

In terms of human-vehicle interconnection, ThePaper OS system supports cross-terminal screencasting on mobile phones. Mobile phone applications can be directly projected onto the central control screen to realize functions such as short video viewing, web browsing, and online meetings. There are preset standardized interfaces behind the driver and passenger, which can be connected to devices such as Xiaomi tablets or Apple iPads. After being connected, Xiaomi tablets and Apple iPads can be continuously powered through the 22.5W magnetic interface. At the same time, the tablets can also be connected to the car to directly control the car. Part of the hardware includes more than 30 car control functions including navigation, seats, and air conditioning. The standardized interface is not limited to tablets, but can also be connected to external devices such as vehicle-mounted clothes hangers with a maximum load capacity of 20 kilograms.

In terms of Chejia Internet, through the password-free connection with the same account, SU7 can remotely control 1,000+ Mijia devices, and even supports setting up automated scene linkage, allowing you to quickly adjust the air conditioner temperature and turn on the lights when you drive home from get off work. wait. Using the magnetic interface around the central control screen, SU7 also prepares a dedicated physical keyboard and aromatherapy system for the control screen. At the same time, the Xiaomi ecosystem is opened to third parties to realize child safety seat status reminders (whether seat belts are fastened), calling the Xiaomi tablet camera (checking the status of children in the back), etc.

Motor: The 21,000-rpm super motor has been put into mass production, and its speed exceeds that of the Model S Plaid.

Xiaomi SU7 has two power versions, the 668km single-motor rear-wheel drive version and the 800km dual-motor four-wheel drive Max version. The two cars have slightly different hardware configurations and power parameters. In terms of motors, the rear drive is equipped with Xiaomi Super Motor V6 (United Motor Vehicles). Automotive electronics), Max (four-wheel drive) is UMC Inovance's Xiaomi super motor V6s, both motors have a maximum speed of 21,000 rpm. However, in terms of motor speed, the "20000+ Club" already has many opponents, including Model S Plaid (20000rpm), Zhijie S7 (the release speed of Huawei DriveONE mass production car is 22000rpm), Jikrypton 001 FR (21000rpm), Xiaomi The speed of super motor V6 and V6s has reached the industry-leading level.

In terms of power parameters, the V6 motor equipped with the single-motor version has a maximum power of 299Ps (220kW), a peak torque of 400N.m, an acceleration time of 0-100km/h in 5.28s, and a top speed of 210km/h. The dual-motor four-wheel drive version uses a V6s super motor. The maximum power of a single motor is 374Ps (275kW), the peak torque is 500N.m, and the power density is 6.78kW/kg. After the dual-motor combination, the Xiaomi SU7 Max system has a total power of 673Ps (495kW), a total system peak torque of 838N.m, a 0-100km/h time of 2.78s, and a top speed of 265km/h. The parameter performance is better than the Model S dual-motor all-wheel drive version. (Corresponding parameters: 3.2s and 250km/h), but lower than the Plaid version (corresponding parameters: 2.1s and 322km/h).

Considering that the Max version deliberately set a Boost mode button on the steering wheel (which lasts for up to 20 seconds of excessive torque output) and set an ejection start mode in the driving mode, I guess that the strongest state can only be turned on in a specific mode, after all, it is so fast The acceleration may cause danger to unprepared people. In addition, SU7 also prepares unlimited freedom for users to adjust the driving mode, including 10 adjustable items. Personalized settings can be uploaded to the Xiaomi community to share with other riders.

At the press conference, Mr. Lei also announced Xiaomi’s self-developed next-generation super motor: V8s. It was revealed at the press conference that the motor has been mass-produced and is planned to be put into cars in 2025. Compared with V6 and V6s, V8s uses a silicon carbide electronic control module with a maximum speed of 27,000 rpm. The maximum power of the motor is further increased to 578Ps (425kW), the peak torque is 635N.m, and the maximum efficiency is 98.11%. The power density is 10.14kW/kg.

In order to withstand ultra-high speeds, the rotor is made of a new generation of 960MPa silicon steel material, and the "stepped" design of the rotor silicon steel sheets is adopted. At the same time, in order to improve the temperature control capability and prevent overheating at high speeds, the V8s super motor also adopts two-way full oil cooling technology, including stator double-circulation three-dimensional oil circuit design and rotor S-shaped oil circuit design. At the meeting, a super motor was even revealed that is still in the technical pre-research stage. It uses laser winding rotor technology and can reach a speed of up to 35,000 rpm in a laboratory environment.

In the research and development of high-speed motors, different brands adopt slightly different technical routes. For example, the Model S Plaid motor uses carbon-wrapped motor rotor technology, and Huawei DriveONE uses silicon steel sheets for its rotors like Xiaomi Super Motor.

Battery: 871V silicon carbide high-voltage platform combined with CTB technology, battery capacity 101kWh.

The rear-wheel drive model was not introduced much at this conference, but the corresponding data was still released. The battery is equipped with a 73.6kWh lithium iron phosphate battery provided by Fudi, with a CLTC range of 668km. The system supports 400V fast charging, and charging for 15 minutes can increase the battery life by about 330km.

The Max version is equipped with Ningde era ternary lithium Kirin battery. The entire battery system adopts CTB (battery and chassis integration) technology. The battery height is 120mm, the capacity is 101kWh, and the CLTC range (four-wheel drive) is 800km. The entire system uses an 871V (some other brands will also call it "quasi-900V" in publicity) charging platform. The charging speed is extremely fast. Data released on site showed that charging can extend the battery life by 220km in 5 minutes and 510km in 15 minutes.