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    Power feeding device, power receiving device, and wireless power feed system
    1.
    发明授权
    Power feeding device, power receiving device, and wireless power feed system 有权

    公开(公告)号：US11424622B2

    公开(公告)日：2022-08-23

    申请号：US15892517

    申请日：2018-02-09

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Koichiro Kamata ,  Misako Sato ,  Shuhei Maeda

    IPC: H02J50/90 ,  H02J5/00 ,  H02J50/40 ,  H02J50/12 ,  H02J50/50 ,  H01F38/00

    Abstract: A wireless power feed system with high transfer efficiency of electric power is disclosed. The wireless power feed system includes a power feeding device and a power receiving device, wherein the power feeding device includes a first electromagnetic coupling coil that is connected to an AC power source via a directional coupler; a first resonant coil; a switch connected to the opposite ends of the first resonant coil; a control circuit which conducts switching on/off of the switch based on a parameter of an amplitude of a reflective wave detected by the directional coupler; and an analog-digital converter provided between the first electromagnetic coupling coil and the control circuit; and the power receiving device includes a second resonant coil; and a second electromagnetic coupling coil, and wherein the first electromagnetic coupling coil is provided between the first resonant coil and the second resonant coil.

    Wireless power feeding system and wireless power feeding method
    3.
    发明授权
    Wireless power feeding system and wireless power feeding method 有权
    无线供电系统和无线供电方式

    公开(公告)号：US09472974B2

    公开(公告)日：2016-10-18

    申请号：US14481435

    申请日：2014-09-09

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yutaka Shionoiri ,  Koichiro Kamata ,  Misako Sato ,  Shuhei Maeda

    IPC: H01F38/00 ,  H02J7/02 ,  H04B5/00 ,  H02J5/00

    CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/20 ,  H02J50/40 ,  H02J50/80 ,  H02J50/90 ,  H04B5/0037 ,  H04B5/0093

    Abstract: An object is to provide a power feeding system and a power feeding method which are more convenient for a power feeding user at the power receiving end. An object is to provide a power feeding system and a power feeding method which also allow a power feeding provider (a company) which feeds power (at the power transmitting end) to supply power without waste. A power feeding device which wirelessly supplies power to a power receiver detects the position and the resonant frequency of the power receiver to be supplied with power, and controls the frequency of a power signal to be transmitted to the power receiver on the basis of the information. An efficient power feeding service can be offered by transmitting a power signal to the power receiver at an optimum frequency for high power transmission efficiency.

    Abstract translation: 本发明的目的是提供一种供电系统和馈电方法，其对于电力接收端的馈电用户更为方便。 本发明的目的是提供一种馈电系统和馈电方法，其还允许馈电供应商（在发电端发电）供电而不浪费电力。 向功率接收器无线供电的供电装置检测供电电源的位置和谐振频率，并根据信息控制发送到电力接收器的电力信号的频率 。 通过以最佳频率向功率接收器发送功率信号以实现高功率传输效率，可以提供有效的馈电服务。

    Power feeding device, power receiving device, and wireless power feed system
    4.
    发明授权
    Power feeding device, power receiving device, and wireless power feed system 有权

    公开(公告)号：US11843259B2

    公开(公告)日：2023-12-12

    申请号：US17887305

    申请日：2022-08-12

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Koichiro Kamata ,  Misako Sato ,  Shuhei Maeda

    IPC: H02J50/12 ,  H02J50/90 ,  H02J5/00 ,  H02J50/50 ,  H01F38/00

    CPC classification number: H02J50/12 ,  H02J5/00 ,  H02J50/502 ,  H02J50/90 ,  H01F38/00

    Abstract: A wireless power feed system with high transfer efficiency of electric power is disclosed. The wireless power feed system includes a power feeding device and a power receiving device, wherein the power feeding device includes a first electromagnetic coupling coil that is connected to an AC power source via a directional coupler; a first resonant coil; a switch connected to the opposite ends of the first resonant coil; a control circuit which conducts switching on/off of the switch based on a parameter of an amplitude of a reflective wave detected by the directional coupler; and an analog-digital converter provided between the first electromagnetic coupling coil and the control circuit; and the power receiving device includes a second resonant coil; and a second electromagnetic coupling coil, and wherein the first electromagnetic coupling coil is provided between the first resonant coil and the second resonant coil.

    Wireless power feeding system and wireless power feeding method
    6.
    发明授权
    Wireless power feeding system and wireless power feeding method 有权

    公开(公告)号：US10110068B2

    公开(公告)日：2018-10-23

    申请号：US14456058

    申请日：2014-08-11

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yutaka Shionoiri ,  Koichiro Kamata ,  Misako Sato ,  Shuhei Maeda

    IPC: H04B7/00 ,  H02J50/12

    Abstract: An object is to provide a power feeding system and a power feeding method which are more convenient for a power feeding user at the power receiving end, without causing increases in complexity and size of devices. An object is to provide a power feeding system and a power feeding method which also allow a power feeding provider (a company) which feeds power (at the power transmitting end) to supply power without waste. A power feeding device which wirelessly supplies power to a power receiver detects the position and the resonant frequency of the power receiver by receiving a position and resonant frequency detection signal using a plurality of sub-carriers having different frequencies from the power receiver, and controls the frequency of a power signal to be transmitted to the power receiver on the basis of the information. An efficient power feeding service can be offered by transmitting a power signal to the power receiver at an optimum frequency for high power transmission efficiency.

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