Xiaomi brings a fresh breath to EV industry with SU7

Global technology giant Xiaomi announced its highly anticipated first electric vehicle, Xiaomi SU7. At the launch, Xiaomi Group Founder, President and CEO Lei Jun shared innovations in electric vehicle technologies with the participants.

Xiaomi, which recently launched its Electric Vehicle Technologies, announced innovations in its five basic technologies: E-Motor, Battery, Xiaomi Die Casting, Xiaomi Pilot Autonomous Driving and Smart Cabin. Xiaomi aims to reshape those used in the automotive industry by further developing basic technologies.

At the launch, Xiaomi introduced its first electric vehicle, the highly anticipated Xiaomi SU7. Xiaomi SU7, which draws attention with its design, range, safety and other features and is defined as a “full-size, high-performance eco-technological sedan”, aims to push the boundaries of performance, ecosystem and mobile smart world.

Xiaomi aims to become one of the five largest automotive manufacturers in the world

Quoting a Chinese poem, “We are reaching the top with firm steps,” said Xiaomi Group Founder, President and CEO Lei Jun, adding that Xiaomi’s entry into the automotive industry is an important transition from the smartphone industry to another industry and in terms of the “Human x Automobile x Home” strategy. He stated that it marked a big step. Stating that there is very limited room for maneuver in the automotive industry, which has a history of more than a hundred years, Lei Jun said, “As Xiaomi, we have made major investments by focusing on developing basic technologies in order to create an extraordinary vehicle. In the next 15-20 years, the world’s top five automotive manufacturers “We aim to be among them,” he said.

Smart electric vehicles show a trend towards the integration of the automotive industry with consumer electronics and smart ecosystems. The integration of full-stack technologies represents a necessary step for the development of the industry. Lei Jun states that Xiaomi electric vehicles will completely reshape the automotive industry and lead to a significant technological leap by integrating industrial production, smart software and artificial intelligence.

Xiaomi’s electric vehicles take a top-down approach, starting from the development of key core technologies and in-depth independent research in key technology sectors. With the commitment to “ten times more investment, consciously creating a perfect car”, Xiaomi has invested over CNY 10 billion in the field of electric vehicles, in the initial research and development phase. The R&D team consists of more than 3,400 engineers and more than a thousand technical experts in critical fields both in China and abroad. At the event, groundbreaking innovations regarding the development of five technologies that form the basis of Xiaomi’s electric vehicle were introduced. Various technologies developed by Xiaomi in critical areas such as E-Motor, Battery, Xiaomi Die Casting, Xiaomi Pilot Autonomous Driving and Smart Cabin have broken new ground both locally and globally, as the first of their kind. This reveals the 13 years of extensive technological know-how that Xiaomi has acquired since its founding.

e-motor

At the event, Xiaomi showcased its independently developed and manufactured E-engines, HyperEngine V6/V6s and HyperEngine V8s. Using innovative technologies such as Bidirectional Full Oil Cooling Technology, S-shaped oil circuit design and cascading silicon steel lamination design, these three e-motors push the industry’s performance limits to new heights, rivaling the performance of traditional large V8 and V6 powertrains from the internal combustion engine era. carrying.

In particular, with a maximum speed of 27,200 rpm, 425kW power and 635N-m peak torque, the HyperEngine V8s sets a global record in the field of electric motors. HyperEngine V8s uses the industry’s first ultra-high strength silicon steel plate with a tensile strength of 960MPa to exceed the industry standard of 27,200 rpm. It emerges with more than twice the resistance compared to mainstream industry products.

In terms of cooling design, HyperEngine V8s features Bidirectional Full Oil Cooling Technology and S-shaped oil circuit design. A double-loop oil circuit is used in the stator, which increases the heat dissipation area by 100% and provides a cooling effect of up to 20°C. Simultaneously, the rotor section uses the patented S-shaped oil circuit, increasing the heat dissipation area by 50% and providing a cooling effect of up to 30°C. In addition, the stator, whose silicon steel laminations have a “step-like” stepped design, expands the effective heat dissipation area by 7%.

HyperEngine V8s, which is currently under development, is planned to go into mass production in 2025 and be used in Xiaomi electric vehicles.

Xiaomi’s self-developed HyperEngine V6/V6s E-motors surpass the most powerful mass-produced electric motor worldwide with an industry-leading rotation speed of 21,000 rpm. HyperEngine V6 super engine has 299PS maximum power and 400N-m maximum torque.
While the HyperEngine V6s super engine reaches 374PS maximum power and 500N-m maximum torque.

Battery

Xiaomi independently pioneers CTB Integrated Battery Technology by leveraging groundbreaking Reverse Cell Technology, a versatile elastic interlayer and a streamlined cabling system. This technology has an impressive battery integration efficiency of 77.8%, reaching the highest efficiency among CTB batteries worldwide. It also exhibits a significant overall performance increase of 24.4% and a reduced height of 17 mm. The theoretical charging range of CLTC, whose maximum battery capacity reaches 150 kWh, exceeds 1200 km.

Xiaomi uses industry-leading safety design standards to ensure stable performance during long-range travel. The downward pressure relief valve maximizes passenger compartment safety by quickly releasing energy in emergency situations. The 14-layer robust physical protection system includes three layers of upper support, three layers of side protection and eight layers of lower protection.

In terms of heat dissipation, a double-sided water cooling solution applies heat dissipation plates on both long sides of the battery cells, achieving a cooling area of 7.8m², four times the industry average. There are 165 airgel insulation materials on the sides of the battery cells that can withstand temperatures up to 1000°C.

Xiaomi electric vehicles with ASIL-D, the highest functional safety level, have a Battery Management System (BMS) also developed by Xiaomi. This battery management system includes three independent thermal runaway monitors and alarms, as well as an early warning system that operates around the clock. With industry-leading reliability, each Xiaomi battery undergoes the most stringent battery safety testing, including more than 1050 safety verifications and 96 times the international endurance testing standard.

Xiaomi Die Casting Technology

By introducing its self-developed die-casting technology Xiaomi Die-Casting T9100 cluster and proprietary die-casting alloy material Xiaomi Titans Metal, Xiaomi has become the only domestic automaker in China to conduct its own research on both large die-casting and materials at the same time.

Xiaomi Die-Casting T9100 covers an area of 840m², with a total weight of 1050t and locking force of 9100t. Xiaomi has also developed a mold model quality evaluation system that can complete inspections of individual parts within 2 seconds, offering an efficiency ten times higher than manual inspection. The application of this cluster achieves remarkable success in electric vehicle production, with the rear underbody combining 72 components, reducing welded joints by 840, reducing total vehicle weight by 17%, and significantly shortening production hours by 45%.

In the field of materials research and development, Xiaomi has developed Xiaomi Titans Metal, a high-strength, high-flexibility, heat-treated die-casting material. Xiaomi’s self-developed “Multi-Material Performance Simulation System” selects the optimal alloy formula among 10.16 million possibilities, ensuring a perfect combination of strength, rigidity and stability.

While the industry focuses on the tonnage of die-cast clamping pressure, Xiaomi has been steadily using a full-stack self-searching method. From materials and equipment sets to finished castings, Xiaomi has completed almost all aspects of the large die casting industrial chain.

Xiaomi Pilot Autonomous Driving

Xiaomi uses all its unique advantages in the field of smart software as a global technology leader that enables the integration of the automotive and consumer electronics sectors with smart ecosystems. The company leads the industry with Adaptive BEV, Road-Mapping Foundational Model and Super-Res Occupancy Network technologies that take autonomous driving to the next level.

Adaptive BEV Technology stands out as an industry-leading innovation that activates different detection algorithms depending on the scenario. The detection area is minimum 5 cm and maximum 20 cm, and the recognition range can range from 5 cm to 250 m. This technology provides wider visibility in urban use, farther vision at high speeds and greater precision when parking.

Road-Mapping Foundational Model technology revolutionizes traditional methods of sensing road conditions. The model not only detects road conditions in real time and intelligently switches to a more suitable driving route, but also can navigate complex intersections smoothly without the need for high-resolution maps, thanks to the information it learns from complex intersection scenarios and experienced driver habits.

In terms of obstacle recognition, Xiaomi’s Super-Res Occupancy Network Technology manages to recognize irregular obstacles without category limitations. Compared to traditional networks that interpret obstacles as blocks, Xiaomi’s innovation