A power feeder of a contactless power transmission device includes a housing base member, a primary coil provided on the housing base member and configured to generate magnetic flux, a cover attached to the housing base member and configured to cover the primary coil, a capacitance sensor including a detection electrode between the primary coil and the cover, and configured to detect foreign matter around the cover based on a change in capacitance detected using the detection electrode, and a high-dielectric member embedded in the cover and having a permittivity higher than that of a material for the cover.
Contactless power transmission device, and power feeder and power receiver for use in the same
2017-07-11
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01F MAGNETS , Magnete / H04B TRANSMISSION , Übertragung |
European Patent Office | 2018
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