The battery system in the Audi e-tron is located beneath the cabin and is 2.28 meters (90 inches) long, 1.63 meters (63.6 inches) wide and 34 centimeters (13.4 in) high. It comprises a total of 36 cell modules in square aluminum housings, each of which is roughly the size of a shoe box. They are arranged on two levels, known as “floors” – a longer lower floor and a shorter upper one. At market launch, each module is equipped with twelve pouch cells having a flexible outer skin of aluminum-coated polymer. The battery operates with a nominal voltage of 396 volts and stores 95 kWh of energy.
Hybrid technology offers considerable potential for CO2 savings, with maximum flexibility in terms of applications: electrification of auxiliary components, mild hybrid applications with 48-volt drive motors in parallel (recuperation/boosting), high-voltage or serial architectures, and plug-in hybrids (purely electric driving for long distances).
48-volt system: 10 percent less CO2 in distribution transport
For light- and medium-weight commercial vehicles up to 12 metric tons in distribution transport, MAHLE offers a robust, compact 48-volt drive system with water cooling and integrated electronics, providing a power output of up to 30 kW. Because of the low level of waste heat from the electric drives (boosting/recuperation) connected in parallel, the cooling architecture used for vehicles with a combustion engine or battery can be adapted easily and effectively for this price-sensitive application area.
Consistent use of electrically driven, beltless auxiliary components—such as electric fans, electric air conditioning compressors, or electric main coolant pumps—can produce a total CO2 savings potential of around 10 percent in urban distribution transport.