Xiaomi SU7Ultra Revolutionizing the Future of Electric Vehicles

TapTechNews August 6th news, the prototype of the Xiaomi SU7Ultra was unveiled in July this year, and it will challenge the non-production lap speed list in October this year, and officially challenge the Nürburgring production lap speed list in 2025.

Xiaomi officially announced today the relationship between the SU7Ultra prototype and the Xiaomi SU7, as follows:

What is the 「Xiaomi SU7Ultra prototype」?

The Xiaomi SU7Ultra prototype is a track prototype built based on the pure electric architecture of the Xiaomi SU7, but it is not entirely a customized model for 「lapping」, but has a more important significance. Its core hardware and body structure are all independently designed and developed by Xiaomi Automobile: the super motor V8s it carries is completely independently developed by Xiaomi, and the vehicle thermal management system, electric drive controller, battery controller, etc., are also all independently designed and developed by Xiaomi Automobile.

「Bone sharing」the body structure of the Xiaomi SU7

At the end of 2023, at the Xiaomi Automobile Technology Conference, the Xiaomi SU7 and the brand-new pure electric architecture independently developed by Xiaomi Automobile were released simultaneously. This pure electric architecture has the characteristics of high integration, large bandwidth, and extremely high rigidity, the torsional stiffness of the whole vehicle is 51,000 N·m/degree. The 「Xiaomi SU7Ultra prototype」 is directly developed based on this architecture, and the cage body as the core of the architecture is reused.

The 「Xiaomi SU7Ultra prototype」 adopts the high-rigidity cage body同源 with the Xiaomi SU7, including ultra-high-strength steel with a yield strength of up to 2,000 MPa. Combined with the cage anti-roll cage welded to the body frame according to the FIA racing regulations.

「Energy homology」Xiaomi CTB integrated battery

The Xiaomi SU7 car uses the CTB integrated battery technology, and the volumetric efficiency of the battery pack can reach up to 77.8%, and the maximum can support a battery capacity of 150 kWh.

The Xiaomi SU7Ultra prototype also adopts CTB battery technology, can achieve a 1,330 kW discharge power of the track-specific high-power battery, by using thinner electrode plate designs, etc., this battery can still output more than 800 kW power at 20% low power.

「Power homology」Xiaomi super motor

The Xiaomi super motor series has already launched two generations of products: the first-generation V6 and V6s super motors have been mass-produced and installed on the Xiaomi SU7; the second-generation V8s motor has also been first installed on the 「Xiaomi SU7Ultra prototype」.

Already mass-produced Xiaomi super motors V6 and V6s can reach a high speed of 21,000 rpm, and the single-unit maximum power is 220 kW and 275 kW respectively.

The Xiaomi super motor V8s is the first motor completely independently developed by Xiaomi Automobile. After the redesign of the stator and rotor and the upgrade of materials, the maximum speed of V8s has been increased to the currently highest mass-produced 27,200 rpm, and it has a high power of 425 kW (578 PS). At the same time, the Xiaomi super motor V8s has also achieved the highest efficiency of 98.11% and an ultra-high power density of 10.14 kW/kg, and the single-unit performance can be comparable to that of a large V8 engine in a fuel vehicle.

To improve the power performance as much as possible, the Xiaomi SU7Ultra prototype is equipped with 3 Xiaomi super motors at a time, including 2 V8s and 1 V6s, which together form a three-motor four-wheel drive system with a total power of 1,138 kW (that is, 1,548 PS).

TapTechNews previously reported that the Xiaomi SU7Ultra car globally premiered the CATL Kirin II battery, was equipped with the Xiaomi V8s super motor, used the track-specific APRacing braking system, the body panels were 100% carbon fiber materials, and the whole vehicle was reduced to 1,900 kg, with a 0-100 km/h acceleration of 1.97 seconds.

Related reading:

「The official release of the Xiaomi SU7Ultra prototype: V8s gets on the car for the first time, 1-second-level zero-to-hundred acceleration」