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On December 28th, Xiaomi Automobile Technology Conference was held in the National Convention Center, which officially revealed the progress and breakthrough of five core technologies of Xiaomi Automobile, and ushered in the first appearance of Xiaomi SU7, the first product of the platform. The design, performance, battery life, safety and other details of SU7 were made public for the first time. Next, let’s briefly understand the core technology of the big show at the meeting and the details of Xiaomi SU7, and finally we will analyze and summarize it.
01
Release of five core technologies
At this conference, Lei Jun mainly introduced the five core technologies of Xiaomi Automobile: electric drive, battery, large die casting, intelligent cockpit and intelligent driving.
01
Xiaomi "super motor"
The speed of V6 and V6s which have been mass-produced is 21,000 rpm. Among them, the V6 super motor has a maximum power of 220kW and a peak torque of 400N·m, and is built with a 400V architecture. The V6s super motor has a maximum power of 275kW and a peak torque of 500N·m, and is built with 800V architecture. As for the V8s, which has not been mass-produced, the speed is as high as 27,200 rpm, which is the first in the industry from the data point of view, but it will not be available until 2025.
02
CTB integrated battery technology
The integrated efficiency of CTB integrated battery of Xiaomi Automobile reached 77.8%, which increased by 24.4% and released the height of 17 mm.. At the same time, the full-stack self-developed battery management system equipped with ASIL-D’s highest functional safety level can collect data in real time, encrypt the cloud through the private network for analysis and early warning, and realize active power failure within 4ms when necessary.
03
9100t Super Die Casting
The mold force reaches 9100t, and Xiaomi’s self-developed visual large model quality judgment system can complete the inspection within 2 seconds, with 10 times higher efficiency than manual work and 5 times higher precision than elite. With the application of this technology, 72 parts of the back floor of Xiaomi automobile are integrated, 840 solder joints are reduced, the overall weight is reduced by 17%, and the production hours are greatly reduced by 45%. In terms of material research and development, Xiaomi has developed a high strength, high toughness and heat-free environmental protection die-casting material "Titan alloy".
04
Full-stack self-developed intelligent driving technology
The industry’s first three key technologies, namely, adaptive zoom BEV technology, large road model and super-resolution occupation network technology, can be combined with the large air-to-end perception decision model, and can accurately park in the 0.05m mechanical garage. Lei Jun said that it is estimated that more than 100 cities can start urban assisted driving by the end of 2024.
05
"People-centered" Intelligent Cockpit
1.49S starts at top speed, the cockpit system is upgraded for 3 minutes, and the whole vehicle is upgraded for 30 minutes. It has a strong ecology, deeply adapts to mainstream applications, and more than 5,000 applications get on the bus. Moreover, the mobile phone X car is interconnected and connected across terminals, and the mobile phone application PIN is put on the car anytime and anywhere, and the car machine is native in seconds. In addition, the huge hardware ecology, the mijia equipment, and no feeling of getting on the bus. Car IOT hardware ecology is fully open to the public and freely develops various applications.
02
Xiaomi SU7 has bright parameters.
With the blessing of five core technologies, the core competitiveness of SU7 has the following points:
01
The maximum power is 495kW, the acceleration time is 2.78 seconds per 100 km, the braking distance is 33.3m per 100 km, and the maximum speed can reach 265 km/h, which exceeds Taycan Turbo and Model S.
02
CLTC has a mileage of 800 kilometers, and supports 800V super fast charging, supporting 200 kilometers battery life in 5 minutes and 510 kilometers battery life in 15 minutes.
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03
The car is equipped with five screens, including a 16.1-inch central control screen, a 56-inch HUD, a 7.1-inch instrument panel and two millet tablets in the rear seat. The car machine uses the latest 8295 car and chips and the 澎湃 OS interactive system, which can make the car machine of Xiaomi SU7 highly integrated with Xiaomi mobile devices and even intelligent furniture, and the accounts can be interoperable, so applications can be directly used on the car.
04
Full-stack self-developed intelligent technology and self-developed sensing technology, self-developed adaptive zoom BEV technology, large road model and super-resolution network technology are adopted to achieve a comprehensive leap in visibility accuracy, sensing accuracy and control accuracy.
05
The length, width and height of Xiaomi SU7 are 4997/1963/1440mm and the wheelbase is 3000mm. The drag coefficient of Xiaomi SU7 is only 0.195Cd, which is the lowest in the world.
06
The super-large die casting technology adopted has 90.1% high-strength steel and aluminum alloy, the highest strength of 2000MPa and the torsional stiffness of 51000 N m/deg.
03
Can we achieve "leapfrogging"?
At the meeting, Lei Jun said that he put high demands on the R&D team, and the design goal was to start from 100 "first, only and most", with the goal of building dream cars in a new era of automobile industry, becoming the top five automobile manufacturers in the world in the next 15 to 20 years, and working hard for the overall rise of China automobile industry.
First of all, we can be sure that the technologies released at the Xiaomi conference are not bad, and the Xiaomi SU7 has no obvious shortcomings at present. The explosion potential in terms of flow, product strength and design has been demonstrated, but after careful study, Xiaomi Automobile has no more prominent highlights. Some of the technologies it shows are "far ahead" or "pioneering". In fact, some friends have mass-produced them to real cars and launched them on the market.
For example, Xiaomi Automobile will adopt CTB technology in its battery system. As early as last June, BYD took the lead in releasing CTB technology in the industry and installed it on its BYD Seal model. Although the volume utilization rate of CTB battery released by Xiaomi is higher than that of BYD, the volume utilization rate of 77.8% is not the highest. Previously, the volume utilization rate of the "BRIC battery" released by Extreme Krypton Automobile has reached 83.7%.
Another example is Xiaomi’s 9100t super-large die-casting, with a press of 9100t, but Tucki has already used a press of 12000t, and the largest die-casting machine equipment factory in China is developing a press of 20000t. Therefore, 9100 tons is not leading, only the mainstream.
At the same time, at present, the main product details of Xiaomi SU7 are almost fully disclosed, leaving only the last "card"-price, which is also the most controversial place. At the meeting, after comparing various models, Lei Jun said: "Let’s stop calling 99,000 and 149,000. This is impossible, but we should respect technology." In other words, Xiaomi SU7 is likely to fall in the price range of 200,000-300,000.
But can the price range of 200,000-300,000 coincide with Xiaomi’s existing user base? You know, at the beginning of Xiaomi’s announcement to build a car, most of the voices on the Internet hoped that Xiaomi would knock down the price of the car. This time, the pricing may exceed the budget of most people. More importantly, the price range of 200,000-300,000 is actually the most competitive range of new energy vehicles in China. For consumers who can accept this price range, it is still unknown whether SU7 can meet their demand points, and Xiaomi Automobile currently lacks brand recognition and trust, which can actually give consumers little confidence.
For a long time, Xiaomi has given people the impression that it has amazing hard power and amazing cost performance. But this time, Xiaomi obviously didn’t want to continue to take the civilian route, and changed to a mid-to high-end route. The price exceeded expectations, and the road would naturally be more difficult. In addition to the price, the Xiaomi car that everyone expects unanimously is a model that can come up with some subversive new technologies. However, the actual situation of Xiaomi SU7 seems to be almost interesting, and it seems that people have not been able to see the unique side of Xiaomi.
However, in any case, it is worthy of tribute that Xiaomi Automobile has taken a brave first step seriously. Xiaomi, who has crossed the border to the automobile field, has a lot of core technologies. Starting from the lowest technology, it has spent ten times to build a good car. At the same time, Xiaomi Automobile has natural traffic and user attention, which not only helps to promote healthy competition in the industry, but also is likely to become a key role in leading the next development trend. Finally, let’s look forward to next year, and Xiaomi Auto will bring us more surprises!