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Detecting an arrangement based on predefined signatures in an inductive power transfer system

  • US 10,543,756 B2
  • Filed: 04/05/2019
  • Issued: 01/28/2020
  • Est. Priority Date: 07/23/2014
  • Status: Active Grant
First Claim
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1. A secondary unit arrangement of an inductive power transfer system, comprising:

  • a secondary unit having a secondary winding structure for receiving a magnetic or electromagnetic field generated by a primary unit of the inductive power transfer system and for producing an electric voltage by magnetic induction,a detector device comprising a plurality of detection elements for detecting an arrangement comprising the primary unit, wherein each detection element of the plurality of detection elements comprising at least one winding of an electric line formed as a coil,an evaluation device programmed or configured to;

    determine at least one electrical property of the detector device with respect to different regions of the arrangement, thereby generating determination results consisting of a determination result for different regions of the arrangement,compare the determination results with existing information about the arrangement to be detected, wherein the existing information includes information about expected values for the different regions of the arrangement, thereby generating a comparison result,decide, from the comparison result, whether the determination results indicates that the detector device has detected the arrangement as expected, thereby identifying the arrangement comprising the primary unit, wherein different types of primary units have different signatures, andidentify the arrangement comprising the primary unit of a specific type of primary units, for which specific type of primary units information about its signature exists, by deciding from the comparison result whether the determination results indicate that the detector device has detected the arrangement comprising the primary unit of the specific type of primary units.

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