Techniques for detecting foreign objects in a charging path of a wireless power transfer system are disclosed. An example apparatus for detecting a presence of a foreign object includes a foreign object detection (FOD) system, a living object protection (LOP) system, a control circuit operably coupled to the FOD system and the LOP system and configured to detect a change in one or more power transfer parameters, perform a calibration procedure on the FOD system based on the change in the one or more power transfer parameters, operate the LOP system in a high sensitivity mode concurrently with the calibration procedure, and operate the LOP system in a standard detection mode upon completing the calibration procedure.


    Access

    Download


    Export, share and cite



    Title :

    Wireless charging transmitter with foreign object and living object detection systems


    Contributors:

    Publication date :

    2019-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    WIRELESS CHARGING TRANSMITTER WITH FOREIGN OBJECT AND LIVING OBJECT DETECTION SYSTEMS

    DIMKE BERNWARD / STAMENIC MILENKO | European Patent Office | 2018

    Free access

    WIRELESS CHARGING TRANSMITTER WITH FOREIGN OBJECT AND LIVING OBJECT DETECTION SYSTEMS

    DIMKE BERNWARD / STAMENIC MILENKO | European Patent Office | 2019

    Free access

    FOREIGN OBJECT DETECTION APPARATUS AND METHOD, AND WIRELESS CHARGING TRANSMITTER DEVICE

    WANG SHUYANG / CHEN SHUANGQUAN / MAO YUNHE et al. | European Patent Office | 2022

    Free access

    WIRELESS CHARGING SYSTEM INCLUDING A FOREIGN OBJECT DETECTION APPARATUS

    BAEK JONGSEOK / LEE BYUNGHYUK / CHO YONGNAM et al. | European Patent Office | 2022

    Free access

    Foreign object detection method and apparatus, and wireless charging system

    TANG CHUNSEN / WANG ZHIHUI / WANG YAOYI et al. | European Patent Office | 2024

    Free access