ELECTRONIC DEVICE RECEIVING WIRELESS POWER
    5.
    发明公开

    公开(公告)号:US20240297533A1

    公开(公告)日:2024-09-05

    申请号:US18662026

    申请日:2024-05-13

    IPC分类号: H02J50/12 H01F27/42

    摘要: A wireless power receiver receiving power from a wireless power transmitter is provided. The receiver includes a resonance circuit, a rectifier circuit, and a driver circuit. The resonance circuit includes first and second coils and a first capacitor. The rectifier circuit includes first and second rectifier circuits. The first rectifier circuit includes first through fourth MOSFETs. Sources of the first and second MOSFETs are connected to ends of a resonator including the first coil and the first capacitor. Sources of the third and fourth MOSFETs are connected to ground. The driver circuit is connected to gates of the first through fourth MOSFETs, When the driver circuit switches off the first and second MOSFETs and switches on the third and fourth MOSFETs, as currents are induced in the resonator and the second coil, the resonance circuit receives the wireless power, and the current induced in the second coil is rectified by the second rectifier circuit.

    ELECTRONIC DEVICE INCLUDING MATCHING CIRCUIT FOR REDUCING HARMONICS

    公开(公告)号:US20230170743A1

    公开(公告)日:2023-06-01

    申请号:US18070854

    申请日:2022-11-29

    IPC分类号: H02J50/70 H02J50/12

    CPC分类号: H02J50/70 H02J50/12

    摘要: A wireless power transmitter may include a power amplifier configured to output an amplified signal based on an input signal and a driving voltage, a first LC resonant circuit connected in parallel to the power amplifier, a matching circuit, and a transmission coil connected to the matching circuit. The matching circuit may include a second LC resonant circuit including a first inductor and a first capacitor connected in series to the first inductor, and having one end connected to an output terminal of the power amplifier and one end of the first LC resonant circuit, and a second capacitor and a third capacitor respectively connected to the other end of the second LC resonant circuit. The first inductor may be configured to have an inductance value leading to an impedance of the second LC resonant circuit equal to or greater than a first predetermined magnitude at at least one second or higher harmonic frequency of an operating frequency of the input signal.

    ANNULAR RESONATOR AND WIRELESS POWER TRANSMITTER INCLUDING ANNULAR RESONATOR

    公开(公告)号:US20230053209A1

    公开(公告)日:2023-02-16

    申请号:US17886029

    申请日:2022-08-11

    IPC分类号: H02J50/12 H02J50/00

    摘要: An annular resonator and a wireless power transmitter are provided. The annular resonator includes upper and lower surfaces, outer and inner surfaces arranged along an annular shape, a plurality of conductors, and a plurality of capacitors connected to the plurality of conductors, respectively. Each conductor includes a first section arranged on the upper surface, a second section extending from the first section and arranged on the outer surface, a third section extending from the second section and arranged on the lower surface, and a fourth section extending from the third section and arranged on the inner surface. A first section of each of a first conductor, a second conductor, a third conductor, and a fourth conductor are sequentially arranged along the upper surface. A second section of each of the second conductor, the third conductor, the fourth conductor, and the first conductor are sequentially arranged along the outer surface.

    ELECTRONIC DEVICE AND METHOD FOR CONTROLLING WIRELESS CHARGING IN ELECTRONIC DEVICE

    公开(公告)号:US20210376668A1

    公开(公告)日:2021-12-02

    申请号:US17330932

    申请日:2021-05-26

    摘要: The disclosure provides an electronic device and a method for controlling wireless charging in the electronic device. An electronic device includes: a sensor, a battery, a resonance circuit configured to wirelessly receive power, a rectification circuit configured to rectify an alternating current (AC) power provided from the resonance circuit into a direct current (DC) power, a DC/DC converter configured to convert the DC power provided from the rectification circuit to output a converted power, a charging control circuit configured to charge the battery using the converted power provided from the DC/DC converter, and a controller, and the controller may be configured to: identify movement information of the electronic device corresponding to a value sensed via the sensor, identify a voltage value of the DC power rectified via the rectification circuit, and control an output of the DC/DC converter based on the movement information and the voltage value.