Standardized Inductive Charging to Integrate Autonomous Driving Fleets into the Energy Infrastructure

Authors

C. Lämmle, MAHLE International GmbH, Stuttgart; T. Würz, S. Perras, SIEMENS AG, Munich; P. Grabherr, MAHLE New Mobility Solutions GmbH, Kornwestheim:

Year

2024

Print Info

Production/Publication ÖVK

Summary

To shape future mobility and intelligent energy infrastructures, MAHLE and SIEMENS have committed to foster the inductive charging of electric vehicles. The wireless power transfer system is based on coil systems utilizing resonant coupling with impedance matching networks located on the vehicle and ground assembly sides. This wireless power transfer system facilitates transfer efficiencies of up to 92 % with optimal positioning, which is close to that achieved by conductive charging, which is typically around 94 %. The detection of living or foreign objects ensures safety at all times. Successful standardization guarantees the compatibility of the vehicle and ground wireless charging assemblies produced by different manufacturers. The end user is able to experience convenient and reliable wireless charging due to the positioning system, which is robust to environmental influences. The full automation of the wireless power transfer system without physical user interaction enables charging of autonomous vehicle fleets and makes the acceptance of charging as part of everyday life obsolete.

The continuous power transfer of 11 kW has been proven in a test environment and in a vehicle. To roll out inductive charging technology, ground assemblies will be installed in private, semi-public and public parking areas. MAHLE and SIEMENS are also developing wireless bi-directional power transfer capability to enable the use of the battery capacity of grid-friendly vehicles, as part of a sustainable energy infrastructure.

ISBN

978-3-9504969-3-2

DOI

https://doi.org/10.62626/5rrz-qo6u Copy link