[car home New Car Launch] On December 28th, Xiaomi Automobile held a technical conference, and the long-awaited (|) was also unveiled. Xiaomi SU7 is positioned as a pure electric medium-sized and large-sized car, which is equipped with a number of brand-new technology products such as Xiaomi super motor, self-developed CTB battery and autonomous driving technology. In terms of power, the maximum power of Xiaomi SU7 dual-motor version is 673 horsepower, the acceleration time from 0 to 100 km/h is 2.78 seconds, and it is equipped with Contemporary Amperex Technology Co., Limited ternary lithium battery with a capacity of 101kWh, and the CLTC cruising range is 800km. The single-motor version has a maximum power of 299 HP, an acceleration time of 5.28 seconds from 0 to 100 km/h, and a capacity of 73.6kWh. The CLTC cruising range is 668km.
The information of this conference is huge. Lei Jun showed the technological breakthroughs made by Xiaomi Automobile in "grinding a sword for a thousand days", and at the end of 2023, it gave the car circle a new shock. Xiaomi released five technologies in this conference, including Xiaomi super motor, Xiaomi self-developed CTB battery technology, super die casting, autonomous driving technology and Modena platform architecture. See below for details. Friends who are not interested in technology can also turn directly to the bottom of the article to see the car.
More exciting videos are all on the car home video platform.
■ Xiaomi Super Motor
At the press conference, Xiaomi brought a self-developed super motor with innovations in rotor materials, stators, silicon carbide and other technologies. The motors are divided into three models: HyperEngine V8s, V6 and V6s. The V6 has a maximum power of 299 HP and a peak torque of 400N·m, and adopts a 400V architecture. The maximum power of V6s is 374 HP, and the peak torque is 500N·m, and it adopts 800V architecture. The maximum power of V8s is 578 horsepower, the peak torque is 635N·m, and the highest efficiency is 98.11%. The power density is 10.14kw/kg, and it will get on the train in 2025. In addition, Xiaomi has developed the pre-research technology of super motor rotor, which has achieved the highest speed of 35000rpm in the laboratory.
■ Xiaomi self-developed CTB battery technology
Xiaomi SU7 adopts 871V silicon carbide high-voltage platform, and its integration efficiency reaches 77.8%. In the mature system, it can support up to 132kWh capacity and achieve 1000+km CLTC battery life. The upper limit of the platform can support up to 150kWh capacity and 1200+km CLTC battery life. Xiaomi has independently developed CTB(Cell to Body) battery technology. In terms of key technological innovation, it adopts two-in-one floor cover, battery cell inversion, multi-functional elastic interlayer and minimalist wiring harness, which improves the overall integration efficiency by 24.4%.
"CTB" is one of the battery integration technologies. At present, there are CTP(Cell to Pack), CTC(Cell to Chassis) and CTB(Cell to Body) in the industry. Among them, CTP was first put forward by Contemporary Amperex Technology Co., Limited, and BYD’s blade battery is one of the best. CTB is simpler and more direct in structure, reducing the space lost due to the connection between the car body and the battery cover, and further improving the space utilization rate. CTC is mounted on models of Tesla, Zero Run and other brands.
In terms of battery safety, Xiaomi adopted the industry’s first "battery inversion" technology, with the pressure relief valve facing downwards, and in extreme cases, it quickly released energy downwards to ensure the safety of the passenger compartment to the greatest extent. In terms of physical protection, it adopts 14 layers of protection; And with unique heat dissipation and heat insulation design; At the same time, it is also equipped with a full-stack self-developed battery management system and battery cloud security to ensure battery safety in a multi-pronged manner. Xiaomi battery adopts 17 layers of high-voltage insulation protection, dual large-area active water cooling, 165 pieces of aerogel insulation material on the side of the battery cell, and is equipped with Che Yun collaborative safety early warning, and the battery management software is self-developed.
In addition, Xiaomi also released an efficient dual-mode heat pump. The heat pump has two modes. Direct type: special heat is directly supplied to the passenger cabin to improve heat transfer efficiency. Indirect: one heat is used to connect multiple heat paths to meet the needs of more scenes. At-15 C CLTC, the comfortable temperature of the passenger compartment can be maintained without additional heater. At-20 C, heat can still be extracted from cold air to supplement heat energy for the passenger compartment.
■ Super large die casting technology
Xiaomi independently designed the "9100-ton integrated large die-casting equipment cluster system", which is self-developed and self-built from aluminum ingots to finished castings, including 9 processes, 60 equipment and 433 process parameters. Realize the integration of 72 parts of Xiaomi automobile rear floor, reduce 840 solder joints, reduce weight by 17%, and reduce production hours by 45%.
This "9100-ton" data is leading in the industry. As a reference and comparison, in 2020, Tesla got a 6000-ton Giga Press die casting machine from Lijin, and Lijin is also providing a 9000-ton Giga Press die casting machine for Tesla. And companies such as Krypton and Gaohe have 7200-ton die casting machines. If you want to know more about integrated die-casting, please click "40% cost reduction". Can integrated die-casting really seal the gods? 》。
The integrated die casting process is suitable for high-end and large-volume vehicles, which can reduce part of the cost. Of course, the blowhole problem in die casting and the thermal expansion and cold contraction after heat treatment must also be faced. In this regard, Tesla, Gaohe and other car companies have independently developed aluminum alloy materials, and Xiaomi is no exception. Xiaomi also released the 72-in-1 integrated die-casting floor, which reduced the weight by 17% and reduced the noise in the car by 2 decibels.
In addition, Xiaomi also released the self-developed "Titan Alloy", which is a high-strength and high-toughness heat-treatment-free environmental protection die-casting material. Trace elements such as rare earth and zirconium are added to the formula to further enhance the strength of the material.
After Tesla started the wave of integrated die casting, its maintenance cost has also attracted the attention of all parties. In this regard, Xiaomi adopts a three-stage maintainable design, which integrates the floor after die casting+collapse zone+anti-collision beam, significantly improving the structural strength, and there is no need to replace large die castings for medium and low speed collisions.
■ Automatic driving
Last August, Xiaomi Xiaolu used her own assisted driving ability to realize automatic U-turn, automatic right turn, automatic detour, automatic detour of accident vehicles, automatic detour around the island, zebra crossing to yield to pedestrians, autonomous parking service, automatic detour of 90-degree extremely narrow bend, automatic charging of mechanical arm and so on.
Today, Xiaomi’s autopilot assistance has ushered in a breakthrough. Xiaomi autopilot system is equipped with 1 lidar, 11 high-definition cameras, 3 millimeter-wave radars and 12 ultrasonic radars. The chip is equipped with two NVIDIA DRIVE Orin chips with a computing power of up to 508TOPS. Xiaomi SU7 is equipped with full-stack self-developed intelligent driving technology, with advanced technologies such as zoom BEV, large road model and super-resolution network occupation.
Xiaomi autopilot system has 27 functions in three categories: high-speed navigation, urban navigation and parking service. Xiaomi will open NOA in 100 cities next year, and announced that Xiaomi smart driving will enter the first camp in the industry in 2024. For reference, the NOA progress of the head player’s city is as follows.
■ Xiaomi Auto Modena Platform Architecture
The "Modena" platform architecture of Xiaomi Automobile starts from the underlying technology and adopts forward development, which consists of product attributes, standardization system and underlying technology modules. The platform enables Xiaomi Automobile to achieve 82km/h Elk test results, 51 000 N m/deg torsional stiffness, 77.8% volume efficiency of battery and 99.81% peak efficiency of motor, creating many firsts in the industry.
■ Xiaomi 澎湃 OS
On the 27th, Xiaomi 澎湃 OS launched a new logo to meet you with a new image. 澎湃 OS is the largest underlying reconstruction in the history of Xiaomi system. This system is not only suitable for mobile phones and smart homes, but has been upgraded to the whole ecology of people, cars and homes. Xiaomi also introduced NPU technology, so that its large model can be arranged in the terminal, rather than in the cloud, and the real large model can be boarded.
■ Xiaomi’s new strategy is "the whole ecology of people and cars"
Lei Jun said that with the release of Xiaomi Auto SU7, "the whole ecology of people and cars" finally closed, and ushered in a "leap" moment. That is to say, fully open up the scenes of "people, cars" and "home", realize seamless connection of hardware and equipment, cooperate in real time, drive industrial chain partners, and create a super intelligent ecology with people as the center and active service to people.
Xiaomi 澎湃 OS has opened more than 200 categories, including Xiaomi Auto, with Xiaomi HyperConnect cross-end interconnection framework, efficiently connecting more than 600 million devices around the world, covering more than 95% of users’ life scenes, so that intelligence can serve everyone in detail. At the same time, because of the empowerment of AI, people’s operating habits will make "the whole ecology of people, cars and homes" smarter. As an intelligent center, Xiaomi HyperMind can perceive and learn people’s daily habits and provide active intelligent services. In day-to-day use, Xiaomi 澎湃 OS will unconsciously become an intelligent center that knows you better.
■ Xiaomi SU7
We have photographed the real car of Xiaomi SU7. Let’s take a look at this new car. According to the official, the headlights of the new car are designed in the shape of meters. Among the squint models, the big eyes of Xiaomi SU7 can be said to be "rare and valuable". Headlights adopt rounded polygon shape, and the interior adopts a light cavity structure similar to a rice shape to enhance recognition. In addition, there is a real air duct under the headlights to help the brake system dissipate heat, and the lower enclosure and the hood highlight the sense of movement, which is quite sporty. In addition, the drag coefficient of the car is only 0.195Cd.
"Three body colors, namely olive green, elegant gray and bay blue"
More exciting videos are all on the car home video platform.
From the side, the new car does not use a hidden door handle, and it is equipped with two different petal-shaped wheels and yellow calipers, which looks young and lively. From the rear of the car, the LOGO is consistent with xiaomi’s LOGO, and the pinyin of "Xiaomi" at the tail highlights its identity. The silver decoration around it highlights the sense of strength, and the active tail highlights the sporty atmosphere. In terms of body size, its length/width/height are 4997/1963 /1440mm respectively, and its wheelbase is 3000mm.
In terms of power, Xiaomi SU7 dual-motor version has a maximum power of 673 HP, a peak torque of 838N·m, a 0-100km/h acceleration of 2.78 seconds, and a maximum speed of 265 km/h. It also has Boost mode and ejection start mode. The braking system is equipped with Braebo four-piston calipers, and the braking distance is 33.3m at 100-0 km/h. The dual-motor version is equipped with a Contemporary Amperex Technology Co., Limited ternary lithium battery with a capacity of 101kWh, with a CLTC battery life of 800km, and is equipped with an 800V super fast charge, with a battery life of 220km in 5 minutes and 510km in 15 minutes. The single-motor version has a maximum power of 299 HP, an acceleration time of 5.28 seconds from 0 to 100 km/h, and a capacity of 73.6kWh. The CLTC cruising range is 668km.
Look at the interior of the new car, which is equipped with three steering wheels and red decoration around the driving mode switch button, highlighting the sense of movement. On the screen side, the new car uses a 7.1-inch flip instrument screen and a 16.1-inch central control screen with a resolution of 3K, and is equipped with a 56-inch HUD with a maximum brightness of 13000nit. In addition, SU7 also retains most of the physical keys, making it easier to operate common functions.
"Xiaomi intelligent fragrance machine"
The interior of Xiaomi SU7 will be available in three colors: Galaxy Grey, Obsidian Black and Twilight Red. In addition, it will be equipped with ambient lights, sports style Nappa leather seats, 5.35 square meters glass roof, 15-speaker sound system and so on. The new car has a large-capacity front compartment of 105L L. In addition, the storage space of the center console supports hardware expansion. The picture above shows the Xiaomi intelligent fragrance machine.
In terms of car system, Xiaomi 澎湃 OS will be installed in the car system of SU7. Xiaomi SU7 is equipped with Snapdragon 8295 chip, and the Xiaomi tablet can be seamlessly mounted on the car, which is used as the rear expansion screen. Xiaomi SU7 supports five-screen linkage, and its application ecology covers mainstream in-vehicle applications, tablet applications and mobile phone applications, supports CarPlay and airplay, and supports Apple iPad to get on the bus.
In addition, Xiaomi CarloT Ecology will be fully open to the three parties, with a unified standardized interface, the richest communication standard protocols and a lightweight transformation plan for existing equipment. In addition, Xiaomi Car Machine innovatively applies streaming upgrade technology, and OTA upgrade speed is faster. The cockpit system is upgraded in 3 minutes and the whole car is upgraded in 30 minutes.
In terms of channels, Xiaomi should adopt a model similar to the series of questions, and put the car in Xiaomi House for display and sales. The staff of a Xiaomi Home store in Xujiahui, Shanghai introduced that the exhibition car will arrive at the store in the first quarter of next year. A staff member of a Xiaomi home in Beijing said that many Xiaomi stores in Beijing are small in size and located on the first floor of the shopping mall, which makes it difficult to place the exhibition cars. Therefore, Xiaomi will transform existing large-scale stores and open a new Xiaomi home to sell cars. A staff member of a Xiaomi store in Foshan, Guangdong, said that some leaders have visited the store to inspect the location of the exhibition car, and other stores with exhibition cars will be selected according to the area.
■ History of Xiaomi’s car making
Give you a brief timeline:
1. On March 30, 2021, Lei Jun, the founder of Xiaomi, said in a public speech that in the next decade, Xiaomi will invest 10 billion US dollars to build cars, and Lei Jun will be personally responsible for the car-making business.
2. In September 2021, Xiaomi Automobile Co., Ltd. was incorporated. On November 27th of the same year, the Management Committee of Beijing Economic Development Zone signed a cooperation agreement with Xiaomi, announcing that Xiaomi Automobile had settled in Beijing Economic Development Zone.
3. In March 2022, Xiaomi Automobile announced that the first production car will be officially mass-produced in the first half of 2024.
4. In August 2022, on the 500th day of Xiaomi’s official announcement to enter the electric vehicle industry, Lei Jun announced the latest progress of Xiaomi Automobile at the autumn new product launch conference-the goal is to enter the first camp of the auto driving industry in 2024.
5. In 2023, spy photos, design drawings, pictures drawn by media and individuals of Xiaomi Automobile began to flow out gradually.
6. In November 2023, Xiaomi SU7 was declared to the Ministry of Industry and Information Technology.
7. At the end of December 2023, Xiaomi announced that it would build a car for 1000 days, and the first press conference was held today.
■ Edit comments
After being in the car circle for so long, I once believed that "there is nothing new under the sun", but I have to say that Xiaomi’s press conference was really interesting for a long time. At the end of 2023, when the new forces became old guns, this new catfish made us find the original fun.
This is the best time. China new energy automobile enterprises hit the water in the middle, the waves stopped the flying boat, and actively participated in development and change; It is also the worst time. Dozens of car companies are rolled into a pot of porridge, and the number of car companies that disappear is countless. Therefore, I maintain a positive and respectful attitude towards the newcomer Xiaomi. We pay attention to the new forces of building cars. Isn’t it just that we love the strength of "being in the prime of life and scolding Fang Qiu"?
Of course, we have to admit that, no matter how good it is, cars are essentially used to drive. We expect the follow-up Xiaomi SU7 to give you more surprises in the real car experience, and please look forward to the follow-up evaluation content of car home. (Text/car home Xing Yueyang)
关于作者