A foreign object detection apparatus including a plurality of object sensing devices positioned between a transmission pad and a reception pad of a wireless charging system; and a detection circuit configured to determine whether a foreign object is present between the transmission pad and the reception pad based on data received from the plurality of object sensing devices. Further, each of the plurality of object sensing devices includes a first coil unit wound with a first coil in a first direction, and a second coil unit wound with a second coil in a second direction different from the first direction; and the first coil unit and the second coil unit overlap each other.


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    Title :

    Foreign object detection apparatus and wireless charging system including the same


    Contributors:
    BAEK JONGSEOK (author) / LEE BYUNGHYUK (author) / CHO YONGNAM (author) / CHOI BOHWAN (author)

    Publication date :

    2021-02-16


    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



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