A power transmission device wirelessly transmits electric power to a power reception device. A power transmission coil is configured by winding a conductive wire. A foreign object detection device detects a foreign object. Sensor coils are placed to cover the power transmission coil. A detector executes determination processing of determining existence of the foreign object on each of the sensor coils, based on a comparison result between a comparison target value based on output voltage output from one sensor coil of the sensor coils and a threshold value set to the one sensor coil. The detector executes threshold value change processing of changing the threshold value set to the one sensor coil on each of the sensor coils, based on induced voltage induced in the one sensor coil by magnetic flux generated by the power transmission coil.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    POWER TRANSMISSION DEVICE AND ELECTRIC POWER TRANSMISSION SYSTEM


    Beteiligte:
    KONDO KAZUKI (Autor:in) / GOTANI AKIRA (Autor:in) / OHNISHI MASAHIDE (Autor:in)

    Erscheinungsdatum :

    18.05.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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



    ELECTRIC POWER TRANSMISSION DEVICE AND ELECTRIC POWER TRANSMISSION SYSTEM

    HASHIMOTO TOSHIYA / MISAWA TAKAHIRO / NAGATA HIDEO | Europäisches Patentamt | 2019

    Freier Zugriff

    Power transmission device and electric power transmission system

    KONDO KAZUKI / GOTANI AKIRA / OHNISHI MASAHIDE | Europäisches Patentamt | 2023

    Freier Zugriff

    TRANSMISSION DEVICE, AND ELECTRIC POWER TRANSMISSION SYSTEM

    II AKIHIRO | Europäisches Patentamt | 2022

    Freier Zugriff

    Resonance coil, electric power transmission device, electric power receiving device, and electric power transmission system

    ICHIKAWA SHINJI / KIKUMA NOBUYOSHI / KADOI MASAFUMI | Europäisches Patentamt | 2017

    Freier Zugriff