OEM&Lieferant Ausgabe 1/2020

84 eMobility Using the eyes of the vehicle for positioning By Ergun Yavuz, Project Manager / Senior Systems Engineer E/E Systems and Software Development, ServiceXpert GmbH and Amith Phalguni, Systems Engineer E/E Systems and Software Development, ServiceXpert GmbH The increasing electrification of vehicles calls for research and development of new and innovative charging para- digms. In comparison to wired charging, inductive or wireless charging is a convenient alternative. The efficiency of wireless or inductive charging technology is dependent on many factors, but the significant one being the position of the automobile over the inductive charging pad. ServiceXpert Gesellschaft für Service-Informationssysteme mbH uses technology currently present in automobiles and applies them for future-oriented developments. In today‘s contemporary automotive industry, most vehicles are equipped with one or more cameras that perform various tasks pertain- ing to advanced driver assistance systems (ADAS). The future of e-mobility is to solve complex problems by aiding in the design and development of innovative solutions, like simplifying the charging process. The engi- neers at ServiceXpert use current concepts and existing technologies to develop them further in order to create future-proof elec- tromobility. The concept of charging without cables and without a physical registration or organizational process on a charging station is charming and would significantly increase the comfort of drivers of electric vehicles. In- ductive charging technology is a new break- through in the field of charging methods for electric vehicles. Since inductive charging is completely wireless, there is no need to use long and heavy charging cables, hence, making inductive charging by far the most convenient method to charge an automobile. This charging technology is based on the prin- ciple of electromagnetic induction, an elec- tromagnetic field is induced between two pads containing magnetic coils. In this way the energy is transferred from a magnetic coil present in the ground pad, which is located, for example, at parking spot reserved for electric vehicles, to the corresponding mag- netic coil present at the base of an electric automobile. The position and placement of the coils with respect to each other conforms to the stan- dards specified in the standard IEC 61980. The standards prescribe a positioning window in relation to the coil center in which inductive charging is allowed. A positioning system not only helps to increase efficiency, but also ensures that the prescribed standards for po- sitioning are met. An auxiliary system is there- fore indispensable, if automobiles are to be charged inductively within the standardized frame conditions. In order to precisely determine the position of the vehicle, the detection and calculation Images: © ServiceXpert GmbH S H A R E