Introduction:
In a groundbreaking announcement on December 28, Xiaomi has ventured into the electric vehicle (EV) sector, introducing its inaugural electric car, the SU7 Max Sedan, equipped with remarkable and awe-inspiring features.
From smartphones and trimmers to weighing machines, Xiaomi is undeniably spearheading a revolution in various industries, and now, it has made a notable entry into the automotive realm.
By unveiling this car model, which underwent a development process costing over 10 billion Yuan, Xiaomi is poised to challenge established automobile giants such as Tesla and Porsche.
This development has ignited comparisons with Tesla’s Model S Plaid electric motor, with Xiaomi’s offering boasting impressive features such as higher speed, power density, and efficiency.
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Xiaomi EV vs. Tesla Model S Plaid Electric Motor:
The HyperEngine V8s is a permanent magnet synchronous electric motor, utilizing high-performance NdFeB permanent magnets in the rotor to create a powerful magnetic field. In contrast, the Tesla Model S Plaid motor is an IPM-SynRM electric motor, combining synchronous permanent magnet and reluctance motor technologies.
Notably, the HyperEngine V8s showcases superior performance metrics, with a maximum speed of 27200 rpm, surpassing the Plaid’s ∼20000 rpm.
The power density of the V8s stands at an impressive 10.14 kW/kg, while the Plaid’s motor reaches ∼5.5 kW/kg. Additionally, Xiaomi’s motor achieves an efficiency of 98.11%, surpassing the Plaid’s ∼96%.

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Here’s a table summarizing the key features of Xiaomi’s SU7 Max electric car:
Feature | Specification |
---|---|
Electric Motors | Xiaomi Hyper Engine with a revolution of 21,000rpm |
Acceleration (0 to 100 Km/hour) | 2.78 seconds (outperforms Tesla’s Model S) |
Driving Range on a Single Charge | 800 Km |
Chassis Force | Modena architecture with a die-cast chassis force of 9,100 tons (greater than Tesla’s vehicles) |
Autonomous Driving Platform | Xiaomi Pilot powered by up to two NVIDIA Drive Orin processors, top-mounted Lidar with a visual range of up to 200 meters, pixel accuracy of 0.1 meters |
In-Car Entertainment System | HyperOs powered by Snapdragon 8295 processor, fast boot time of 1.49 seconds, 16.1-inch 3K touchscreen for media control, seat adjustment, and smart home appliances control |
Rear Seat Entertainment | Optional Xiaomi Pad tablets, mountable on magnetic ports behind front headrests |
Overall Experience | Comfortable ride with full entertainment features |
Xiaomi EV: Innovations Driving Energy Density and Efficiency
Xiaomi’s achievement in energy density and efficiency is attributed to several groundbreaking innovations:
Special Silicon Steel Sheet: The development of the industry’s highest strength special silicon steel sheet has been instrumental. Using a 0.2mm ultra-thin silicon steel sheet in the stator and a 0.35mm thin ultra-high-strength silicon steel sheet in the rotor reduces eddy-current losses at high frequencies, enhancing motor efficiency.
Hairpin Flat Wire Winding: The eight-layer hairpin flat wire winding in the stator, with a slot fill factor of up to 77%, allows for a smaller stator and generates a stronger magnetic field.Additionally, The rectangular shape of the hairpins, exceeding the conventional 45-50% fill factor, enables higher current capacity, improving efficiency and reducing heat generation.
Reduced Air Gap Limit: Xiaomi has successfully reduced the stator and rotor air gap limit to 1.3mm, minimizing the magnetic path reluctance originating from the air gap. A narrower air gap enhances the magnetic circuit, contributing to increased motor efficiency.
Patented Oil Cooling: The HyperEngine V8s incorporates patented oil cooling technology, enhancing heat dissipation and ensuring optimal temperature management. This not only improves efficiency but also enhances the reliability and lifespan of the motor.
AI Simulation Technology: Xiaomi leveraged AI simulation technology to optimize the design and performance of these electric motors, ensuring a holistic approach to efficiency and reliability.
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Xiaomi EV: Implications for Industry
Xiaomi’s HyperEngine V8s presents a formidable challenge to Tesla, showcasing superior speed, power density, and efficiency. The use of cutting-edge materials, innovative winding techniques, and advanced cooling solutions set Xiaomi apart.

This competition is likely to drive both companies towards continuous innovation, ultimately benefiting consumers with more efficient and high-performance electric vehicles.
Performance Metrics:
Speed:
- Xiaomi HyperEngine V8s: Impressive maximum speed of 27200 rpm.
- Tesla Model S Plaid: Attains a maximum speed of ∼20000 rpm (redline ∼23000 rpm).
Power Density:
- Xiaomi HyperEngine V8s: Boasts an outstanding power density of 10.14 kW/kg.
- Tesla Model S Plaid: Achieves a power density of ∼5.5 kW/kg.
Efficiency:
- Xiaomi HyperEngine V8s: Impressive efficiency rating of 98.11%.
- Tesla Model S Plaid: Slightly lower efficiency at ∼96%.
This healthy competition is expected to catalyze further technological advancements, ultimately benefitting the entire electric vehicle ecosystem.
Conclusion:
Xiaomi’s HyperEngine V8s represents a major milestone in the evolution of electric motor technology.
The combination of innovative design elements, cutting-edge materials, and AI optimization positions Xiaomi as a formidable player in the electric vehicle market.
Additionally,the ongoing rivalry with Tesla is likely to spur continuous innovation, setting the stage for a new era of high-performance electric vehicles.
As the industry witnesses these advancements, consumers can anticipate more efficient and powerful electric cars in the near future.