METAL FOREIGN OBJECT DETECTION SYSTEM FOR INDUCTIVE POWER TRANSMISSION SYSTEMS
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Accused Products
Abstract
The invention relates to a detection system for detecting electrically conductive foreign objects (F) in the area (3) between the primary winding and secondary winding of an inductive power transmission system, wherein the detection system also has at least one primary coil (LA) and at least one secondary coil (LB) which are coupled together, and that at least one primary coil (LA) and/or at least one secondary coil (LB) of the detection system is an integral part of at least one electric resonant circuit (LA-CA; LB-CB), wherein an electric source (7) energises at least one resonant circuit (LA-CA), and that a monitoring device monitors at least one electric variable on the secondary side and/or on the primary side of the detection system and effects the foreign object detection by means of the measured electric variable.
19 Citations
39 Claims
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1-19. -19. (canceled)
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20. A detection system for detecting electrically conductive foreign objects in an area between a primary winding and a secondary winding of an inductive power transmission system, wherein the detection system includes:
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at least one primary coil and at least one secondary coil which are coupled together, and wherein at least one primary coil and/or at least one secondary coil of the detection system is an integral part of at least one electric resonant circuit, wherein an electric source is configured to energize at least one resonant circuit, and a monitoring device configured to monitor at least one electric variable on the secondary side and/or on the primary side of the detection system and to perform foreign object detection based at least in part on the measured electric variable. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification