The invention provides a coil apparatus (100) for inductive power transmission, comprising an electromagnetic coil (102) for emitting and/or picking up an electromagnetic field (112) on a transmission side (106) of the coil apparatus (100), and comprising a housing wall (104), which covers the coil (102) on the transmission side (106) and is transmissive to the electromagnetic field (112). Furthermore, the coil apparatus (100) comprises a housing medium (108), which is enclosed by the housing wall (104) in such a way that, when a through-opening (110) is formed in the housing wall (104), the housing medium (108) passes through the through-opening (110). Alternatively, a housing vacuum is provided which is enclosed by the housing wall in such a way that, when a through-opening is formed in the housing wall, atmospheric air (118) passes through the through-opening. Among further aspects, a vehicle comprising such a coil apparatus and a method for inductive power transmission are provided. The method comprises steps of providing an electromagnetic coil (102) for emitting and/or picking up an electromagnetic field (112), covering the coil (102) on a transmission side (106) with a housing wall (104) which is transmissive to the electromagnetic field (112), enclosing a fluid (116) with an internal pressure which is different than the atmospheric air by the housing wall (104), sending the internal pressure, evaluating whether the internal pressure reaches a presettable internal pressure threshold value, and outputting a signal when the internal pressure reaches the internal pressure threshold value.


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    Title :

    Coil apparatus and method for inductive power transmission


    Contributors:

    Publication date :

    2018-06-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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 / H01F MAGNETS , Magnete



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