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    SYSTEM AND METHOD FOR REDUCING LEAKAGE FLUX IN WIRELESS CHARGING SYSTEMS
    1.
    发明申请
    SYSTEM AND METHOD FOR REDUCING LEAKAGE FLUX IN WIRELESS CHARGING SYSTEMS 有权
    在无线充电系统中减少漏电流的系统和方法

    公开(公告)号：US20170070075A1

    公开(公告)日：2017-03-09

    申请号：US14846394

    申请日：2015-09-04

    Applicant: QUALCOMM Incorporated

    Inventor： Leandro Percebon ,  Michael Werner ,  Daniel Kuerschner ,  Wojciech Chlebosz

    IPC: H02J7/02 ,  H02J7/04 ,  B60L11/18

    CPC classification number: H02J7/025 ,  B60L11/182 ,  H02J5/005 ,  H02J7/042 ,  H02J50/10 ,  H02J50/70

    Abstract: One innovation includes a system for reducing magnetic flux of a wireless charging field in a wireless power charging system. The system comprises a wireless power transmitter configured to generate the wireless charging field, the field comprising the magnetic flux and a collector comprising a ferromagnetic material and configured to reduce the magnetic flux. The collector is positioned between a first distance and a second distance at a third distance from the transmitter. The collector is configured to reduce the magnetic flux at a first level at the first distance, at a second level at the second distance, and at a third level at the third distance, the third level greater than each of the first and second levels.

    Abstract translation: 一种创新包括用于减少无线充电系统中无线充电领域的磁通量的系统。 该系统包括被配置为产生无线充电场的无线电力发射器，该磁场包括磁通量，并且集电器包括铁磁材料并被配置为减小磁通量。 收集器位于离发射器第三距离处的第一距离和第二距离之间。 收集器被配置为在第一距离处以第二距离处的第一电平减小磁通量，在第三距离处减小第三电平的第三电平，第三电平大于第一电平和第二电平。

    Dynamic mutual sensing foreign object detection loops
    4.
    发明授权
    Dynamic mutual sensing foreign object detection loops 有权

    公开(公告)号：US10181759B2

    公开(公告)日：2019-01-15

    申请号：US15264732

    申请日：2016-09-14

    Applicant: QUALCOMM Incorporated

    Inventor： Swagat Chopra ,  Leandro Percebon

    IPC: H02J50/60 ,  H02J50/10 ,  B60L11/18 ,  G01V3/10 ,  H02J7/02

    Abstract: Techniques for detecting a presence of a foreign object within a region for wirelessly transferring power to charge an electric vehicle are discloses. An example apparatus according to the disclosure includes a foreign object detection (FOD) structure including a transmitting loop structure, a receiving loop structure galvanically isolated from the transmitting loop structure and positioned relative to the transmitting loop structure such that a magnetic field generated by the transmitting loop structure induces a first voltage in the receiving loop structure, wherein the first voltage is below a threshold value, and a control circuit configured to drive the transmitting loop structure and detect a change in a magnitude of the first voltage in the receiving loop structure in response to the presence of the foreign object within the magnetic field.

    Hybrid foreign object detection (FOD) loop array board
    6.
    发明授权
    Hybrid foreign object detection (FOD) loop array board 有权

    公开(公告)号：US10124687B2

    公开(公告)日：2018-11-13

    申请号：US15264908

    申请日：2016-09-14

    Applicant: QUALCOMM Incorporated

    Inventor： Leandro Percebon ,  Daniel Kuerschner

    IPC: B60L11/18 ,  H02J50/10 ,  H02J50/60

    Abstract: Techniques for detecting a presence of a metallic and/or a ferromagnetic object over a region for wirelessly transferring power to charge an electric vehicle are presented. An example apparatus includes one or more foreign object detection (FOD) loops arranged in an array over a charging area, at least a portion of the FOD loops being in a first configuration and at least a portion of the FOD loops being second configuration different than the first configuration based on a value indicative of an amount of magnetic coupling between the charging area and a respective one the FOD loops within a corresponding area of the array.

    APPARATUS AND METHODS FOR REDUCING MAGNETIC FIELD EMISSIONS BETWEEN WIRELESS POWER TRANSMITTERS
    8.
    发明申请
    APPARATUS AND METHODS FOR REDUCING MAGNETIC FIELD EMISSIONS BETWEEN WIRELESS POWER TRANSMITTERS 审中-公开

    公开(公告)号：US20170358960A1

    公开(公告)日：2017-12-14

    申请号：US15179854

    申请日：2016-06-10

    Applicant: QUALCOMM Incorporated

    Inventor： Leandro Percebon

    IPC: H02J50/80 ,  H02J50/12 ,  B60L11/18 ,  H02J7/02

    Abstract: In an aspect of the disclosure, an apparatus for wirelessly transmitting power is provided. The apparatus includes a communication circuit configured to communicate with a first wireless power transmitter and a second wireless power transmitter. The apparatus further includes a controller circuit configured to identify a first phase of a first current provided to the first wireless power transmitter, the first current generating a first magnetic field. The controller circuit further determines a time to provide a second current to the second wireless power transmitter. The controller circuit further provides the second current at the determined time with a second phase having a phase difference between the first phase configured to reduce a magnitude of a combined magnetic field of the first and second magnetic fields in a region between the first and second wireless power transmitters.

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