A deep-dive in to Audi's new EV platform

Powertrain Innovations

At the heart of the PPE are newly developed electric motors, power electronics, transmissions, and high-voltage batteries, all meticulously engineered for optimal performance. The electric motors are more compact and efficient than those used in previous models, leading to a 40-kilometer increase in range compared to the first-generation Audi e-tron. These motors are also able to rotate freely when not in use, minimizing drag losses and enhancing overall efficiency.

The new rotor oil cooling system allows for a reduction in the use of heavy rare earth elements, decreasing the motor's weight by 20 percent and its installation space by 30 percent.

Advanced Power Electronics and Transmission

The PPE has high-efficiency silicon carbide semiconductors, which enhance performance under partial loads by 60 percent compared to traditional silicon semiconductors. This improvement results in a 20-kilometer range advantage and contributes significantly to the overall efficiency of the PPE electric motors.

The 800-volt architecture enables the use of thinner wiring, reducing weight and raw material consumption. The transmission features dry sump lubrication and an electric oil pump, with nozzles spraying the gears directly to minimize friction losses and further enhance efficiency.

Enhanced Charging Performance

The PPE's 800-volt architecture supports charging outputs of up to 270 kW, allowing for rapid charging speeds.

Audi has optimized the battery cell chemistry to balance energy density and charging performance, allowing the Audi Q6 e-tron to charge from 10 percent to 80 percent in just 21 minutes.

The system’s ability to predict it’s thermal management plays a crucial role in this process, using data from the navigation system, route, and usage patterns to pre-condition the battery for optimal charging performance. This system ensures the battery is cooled or heated as needed, reducing charging times and extending battery life.

Innovative Thermal Management

Audi has significantly redesigned the vehicle's thermal management system, incorporating both a water-glycol heat pump and an air heat pump. This dual approach manages waste heat from the electric motor, power electronics, and battery, even using ambient air as an additional heat source. An 800-volt air PTC heater directly supports interior temperature control, avoiding heat losses associated with traditional water-based systems.

Regenerative Braking and E³ 1.2 Architecture

The PPE's advanced recuperation system allows for 95 percent of everyday braking to be handled via regenerative braking, with hydraulic friction brakes used less frequently. This system ensures a smooth transition from regenerative to mechanical braking, providing a consistent pedal feel, something that is regularly lacking with regenerative braking. The Intelligent Brake System (IBS) has been significantly improved, allowing for axle-specific brake blending and two-stage coasting recuperation.

Audi's new E³ 1.2 electronic architecture further enhances the digital experience for customers. This scalable and future-proof system supports larger, higher-resolution screens, over-the-air updates, and the integration of new features via Functions on Demand. The Q6 e-tron series introduces a new Android Automotive-based infotainment platform and a deeply integrated digital assistant, enhancing user interaction through voice commands and visual displays.

Digital Enhancements and Future Display

With E³ 1.2, Audi customers benefit from an array of digital features, including a new standardized infotainment platform that supports third-party apps. These apps, available directly on the vehicle's display, cover categories such as music, navigation, and productivity. The Audi smartphone interface remains available for integrating Apple CarPlay and Android Auto, ensuring a seamless digital experience.

The Premium Platform Electric (PPE) represents a significant leap forward in Audi's journey toward sustainable premium mobility. With its advanced powertrain components, efficient power electronics, innovative thermal management, and enhanced digital architecture, the PPE sets a new standard for electric vehicles.

Audi and Porsche's commitment to innovation and sustainability is evident in every aspect of the PPE, from its cutting-edge charging capabilities to its user-friendly digital features. As both brands continue to expand their electric vehicle portfolio, the PPE will play a crucial role in shaping the future of premium electric mobility.