48 Volt High Power – Much More than a Mild Hybrid

Authors

Dr. Stefan Lauer, Mattia Perugini, Richard Weldle, Friedrich Graf, Vitesco Technologies, Regensburg, Germany

Summary

It is widely accepted that hybrid electric vehicles will be an important tool, besides pure electric vehicles, to lower the CO2 emissions of passenger cars in the coming decade and beyond. Up to now, high cost and system impact on existing drivetrains prevented the introduction of these systems on a large scale. By increasing the peak power to 30 kW, the highly compact 48 Volt High Power electric drive by Vitesco Technologies now facilitates a full hybrid based on 48 V technology. This means highest fuel efficiency and low CO2 emissions known from HV hybrids as well as a ‘hybrid feeling’ by pure electric driving and all this at an attractive price.

The 48 V hybrid system is rounded off by the ‘Advanced Energy Storage’ (AES), a space-saving single power supply unit for both 12 V and 48 V. The use of Li-ion technology and the removal of the 12 V lead acid battery leads to a high charge / discharge cycle count number, high power density and a significant weight reduction. Finally, a 48 V plug-in hybrid variant is proposed as attractive fuel saving concept.

Members Login