This article**: Times Finance Author: Zhang Xu
1003 days after Xiaomi made a car, Lei Jun held a technical conference, only talking about technology, not **.
The meeting was full of adjectives such as "first" and "leading", and when explaining a large number of technical details, Lei Jun would ask from time to time: "Do you understand it, if you don't understand it, why don't I say it again?"”
Lei Jun doesn't want to make quick money, this is his career of "gambling all his honors". To this end, Lei Jun expressed his attitude: "If you save a car, it will be almost the same if you invest three or four hundred R&D personnel and one billion yuan." In the 1,003-day car research and development process, Xiaomi invested more than 10 billion yuan and more than 3,400 engineers.
Xiaomi Su7.
Lei Jun also put forward a principle to Xiaomi Auto - to be upright and surprising, to fully respect the laws of the automotive industry, to ensure that the first car is done well, and then innovate under this premise. Xiaomi's first model SU7 also reflects Lei Jun's pursuit from the naming, SU refers to Speed Ultra.
This model will be mass-produced and delivered next year, and at the end of 2023, will it really be extreme and leading, and will it be enough to carry Lei Jun's dream?Everything has to go back to technology.
The motor was cut off by Huawei, and the next generation is stronger.
To achieve "high performance", Xiaomi first took out its own developed motor - HyperEngine V6 V6S. The reason why the naming method of "V+ number" was chosen was actually to benchmark the name of the large-displacement fuel engine, and Lei Jun hoped to arouse the public's recognition of performance.
The V6 V6S motor optimizes the rotor stress through AI** to achieve a rotor structure topology of 200,000 times of high rotation, and successfully finds the optimal rotor stress distribution at high speed. In addition, the stator and rotor air gap limit of this motor has been reduced to 13mm, which reduces the magnetic resistance to achieve high performance.
Judging by the results, the motor is divided into different versions with a maximum power of 220kW and 275kW, with a maximum speed of 21000rpm. As a comparison, the maximum speed of the ZEEKR 001 FR motor is 20620rpm, while the Zhiji LS6, which also has a motor speed of 21000rpm, has a maximum power of 215kW, which is slightly lower than the Xiaomi motor.
Lei Jun had hoped that this motor would become the fastest motor on a domestic car, but the time of the press conference was a step late, leaving Xiaomi out of the title. In Lei Jun's words: "We were cut off by our friends. ”
It is Huawei, an old rival in the mobile phone market. The Zhijie S7, which was released in November this year, is equipped with a motor with a speed of 22,000 rpm on a production car, and the maximum efficiency of the motor can reach 98%.
Lei Jun said that the speed of the ultramotor in the laboratory can reach 35,000 rpm.
However, Xiaomi still has a back hand. The 27,200-rpm HyperEngine V8S motor is expected to be installed in 2025. Accompanied by the exclamations at the scene, Lei Jun also showed the third-generation motor, the next-generation super motor in the laboratory, which can reach a speed of 35,000rpm.
1 degree more than a 100 degree battery.
If the motor misses the "strongest", then the other two technologies, Xiaomi has taken the lead by a very narrow margin.
As the three major parts of electric vehicles, power batteries are related to a series of key indicators such as mileage. The SU7 is equipped with CATL's Kirin battery pack, which adopts CTB technology and inverts the battery cells to improve space utilization and vehicle safety. In terms of battery life and charging, the Xiaomi car SU7 has a CLTC range of 800 km, with a range of 200 km in 5 minutes and 510 km in 15 minutes.
Lei Jun said that the upper limit of the battery pack capacity of the 800V high-voltage platform developed by Xiaomi Auto can reach 150 degrees, and the CLTC range is more than 1,200 kilometers. However, Xiaomi did not fill the parameters, but chose a number with zero and whole - 101 degrees, and won the 100-degree battery of many new cars with an advantage of 1 degree.
Lei Jun said that the CTB battery achieved 778% volumetric efficiency.
A person in the power battery industry explained to Times Finance: "100-degree batteries are being adopted by more and more new models, because the 800V high-voltage architecture saves space and cost, and allows larger battery packs to be put on the car." In addition, the combination of large battery + single motor can bring longer battery life, or bring better performance to dual-motor products and enhance product competitiveness. ”
Judging from the recently released new cars, "800V high-voltage architecture + 100-degree battery + 800 km range" has almost become the standard. For example, the 100-degree battery of the Zhijie S7 with a single rear motor can have a range of up to 855km. The ZEEKR 007, which was released a day earlier than Xiaomi Auto, also has a 100-degree battery pack version, with a maximum range of up to 870km in the single-motor version.
Very similar to the Kirin battery pack that supports 800V fast charging on the Xiaomi car SU7, there is also a 100-degree Kirin battery pack on the ZEEKR 001FR, with a maximum charging rate of 4C, and the fastest charging time for SoC 10%-80% is 15 minutes.
Behind the dazzling data, the cost of Kirin batteries is also "far ahead". At present, the supporting models are generally higher, and the price of the Zeekrypton 009ME model is 4990,000-5880,000 yuan, ZEEKR 001FR starts at **7690,000 yuan. It's no wonder that Lei Jun shouted in the guessing link: "9."90,000, 1490,000 impossible, respect technology!”
Slightly better than Tesla die-casting machines.
In addition to the three major pieces, Xiaomi cars have not missed another fashion - integrated die-casting. Xiaomi claims to be the only domestic automaker that independently develops both a large die-casting equipment cluster and die-casting materials.
The integrated die-casting of the car body was first applied to the Model Y by Tesla, and under the effect of the 6,000-ton die-casting machine, the original more than 70 rear floor parts were simplified to two, reducing more than 1,000 solder joints. However, the die-casting mold design, material, processing, inspection, mold trial and other processes of automobile integrated die-casting technology are long and costly, and the mold is customized for special vehicles, if the follow-up sales are not good, it is difficult to amortize the cost through volume.
But Xiaomi gritted its teeth and caught up with this trend. Lei Jun said that the clamping force of Xiaomi's super large die-casting is 9,100 tons, which can make the rear floor of the car realize 72 parts in one, reduce the number of solder joints by 840, reduce the overall weight by 17%, and reduce production man-hours by 45%. He showed a die-casting cluster equipment with his own character model**, which is full of visual impact of the collision of big industry and technology.
The Tesla Cybertruck, which is about to be delivered, is built with a 9,000-ton die-casting machine, and in China, Cialis also uses a 9,000-ton one-piece die-casting technology on the AITO M9, and Xiaomi once again takes the lead with a slight advantage of 100 tons.
Xiaomi Super Die Casting.
It will take time to drive the first echelon intelligently.
Intelligent driving is also the focus of Xiaomi's automotive technology conference. In terms of hardware, Xiaomi's intelligent driving system is equipped with two NVIDIA Orin high-computing power chips, with a comprehensive computing power of up to 508TOPS. The perception hardware includes 1 lidar, 11 high-definition cameras, 3 millimeter-wave radars and 12 ultrasonic radars (MAX version of the model).
Adaptive zoom BEV technology, road model and super-resolution occupancy network technology constitute the three key technologies of Xiaomi's intelligent driving. With the support of these technologies, Xiaomi Su7 can realize the ability to recognize real-time road conditions, intelligently adjust driving tracks, identify unlimited types of special-shaped obstacles, and adaptively call different perception algorithms according to different scenarios.
In December this year, there were two consecutive snowfalls in Beijing, and near the Xiaomi Industrial Park, the Xiaomi SU7 was being tested on the road in this environment. The road test** displayed at the press conference showed that in rainy and snowy weather, the SU7 was able to successfully complete operations such as overtaking, avoiding traffic jams, avoiding pedestrians, mixing lane safety situation, and large turns, and no one took over the whole process.
Valet Parking Test**.
Lei Jun's goal for Xiaomi Auto Smart Driving is to enter the first echelon in 2024, and the urban NOA function will be opened in 100 cities by the end of next year.
Xiaomi announced that it would enter the first echelon in 2024, but the first echelon has long been out of the dust. Driven by the Transformer + BEV architecture led by Tesla, the intelligent driving algorithm is approaching the end-to-end intelligent driving model, making intelligent driving begin to enter a new era of urban NOA.
At present, the first echelon, represented by Wei Xiaoli and Huawei, is actively promoting the implementation of urban NOA functions and a wider coverage of "no-map solutions". At the M9 press conference, Yu Chengdong announced that at the end of December 2023, he would land in cities across the country.
On the same day that Xiaomi held a press conference, Ren Shaoqing, vice president of intelligent driving R&D at NIO, showed the latest progress of NOA. Nearly 320,000 kilometers of available mileage in urban areas have been verified and released by NIO's global pilot assistance NOP+, and a total of 208 cities have been connected to the network.
The second-tier brands are also improving their technology in high-speed NOA, and will explore expanding their functions to higher-level urban NOA functions in 2024. From this point of view, Xiaomi's "opening 100 cities NOA by the end of 2024" has been opened up by the first echelon.
In addition to urban NOA, the race for L3 autonomous driving has also begun. At the end of 2023, brands such as BMW, Mercedes-Benz, Zhiji, BYD, Deep Blue, AVATAR, and Cialis have officially announced that they have obtained L3 test licenses.
China Galaxy ** said that with the continuous upgrading and improvement of domestic independent brand technology, the Ministry of Industry and Information Technology issued in the early stage of the "Carry out intelligent networked vehicle access and road access pilot work" notice for the development of high-level intelligent driving to eliminate policy obstacles, it is expected that the urban NOA function will become the main theme of the autonomous driving industry in 2024, the main engine factory will continue to increase investment in the urban NOA function, promote the acceleration of the product "intelligent" competition, and help the autonomous driving industry enter the fast lane of development.
To take the lead in intelligent driving, L3 autonomous driving will undoubtedly become another highland for Xiaomi to compete for. Of course, Xiaomi, as one of the youngest new car-making forces, has a growth rate that should not be underestimated. Lei Jun fully understood, he said: "The goal of Zhijia is to be the first echelon in 2024, and I hope to be the first in the industry if I give some time, which is the most volatile part of our industry." ”
Design goals: 100 "first", "only" and "most".
In fact, in the face of a rapidly developing industry, no one can be the first for too long.
For example, Lei Jun announced on the 28th that "the turning radius of Xiaomi Su7 is 5.."7 meters, 100 zero brakes can do 333 meters, leading a group of luxury cars. As soon as the words fell, Hongqi pushed this achievement one step further.
Hongqi said on December 29 that at the test site in Qionghai, Hainan Province, Hongqi's new autonomous electric vehicle achieved a braking distance of 29 kilometers per 100 kilometers68 meters, successfully breaking the world record for 100 kilometers of braking distance for electric vehicles.
Hongqi said that for the first time in the production of models to shorten the braking distance to less than 30m, this breakthrough marks China's independent progress in chassis technology, will have a far-reaching impact on the global automotive safety field.
The braking distance of the Xiaomi car won at 100 km, but not for long. And this has become a microcosm of the rapid development of the industry, no brand can always lead in all fields, but stronger technology can allow consumers to continue to enjoy better products, and boost the progress of the industry.