公开(公告)号：US08796887B2

公开(公告)日：2014-08-05

申请号：US13720835

申请日：2012-12-19

Applicant: QUALCOMM Incorporated

Inventor： William H. Von Novak ,  Charles E. Wheatley ,  Stanley S. Toncich ,  Ernest T. Ozaki

IPC: H01F27/42

CPC classification number: H01F38/14 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/70 ,  H02J50/80 ,  H02J50/90 ,  H04B5/0037 ,  H04B5/0093

Abstract: Exemplary embodiments are directed to wireless power. A wireless power receiver includes a receive antenna for coupling with near field radiation in a coupling-mode region generated by a transmit antenna operating at a resonant frequency. The receive antenna generates an RF signal when coupled to the near filed radiation and a rectifier converts the RF signal to a DC input signal. A direct current (DC)-to-DC converter coupled to the DC input signal generates a DC output signal. A pulse modulator generate a pulse-width modulation signal to the DC-to-DC converter to adjust a DC impedance of the wireless power receiver by modifying a duty cycle of the pulse-width modulation signal responsive to at least one of a voltage of the DC input signal, a current of the DC input signal, a voltage of the DC output signal, and a current of the DC output signal.

Abstract translation: 示例性实施例涉及无线电力。 无线电力接收机包括用于以由谐振频率工作的发射天线产生的耦合模式区域中的近场辐射耦合的接收天线。 当耦合到近场辐射时，接收天线产生RF信号，并且整流器将RF信号转换成DC输入信号。 耦合到DC输入信号的直流（DC）到DC转换器产生DC输出信号。 脉冲调制器通过修改脉冲宽度调制信号的占空比来响应于以下中的至少一个：DC至DC转换器产生脉冲宽度调制信号以调整无线功率接收机的DC阻抗， 直流输入信号，直流输入信号的电流，直流输出信号的电压和直流输出信号的电流。

公开(公告)号：US09425642B2

公开(公告)日：2016-08-23

申请号：US14450083

申请日：2014-08-01

Applicant: QUALCOMM Incorporated

Inventor： Stanley Slavko Toncich ,  Ernest T. Ozaki

IPC: H02J7/00 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J7/0052 ,  H02J7/007 ,  H02J7/025 ,  H02J50/50 ,  H02J50/90

Abstract: Exemplary embodiments are directed to wireless power transfer. A method of operating a wireless receiver may comprise receiving wireless power with a receive antenna and conveying power from the receive antenna to a chargeable element. The method may further include electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully-charged.

Abstract translation: 示例性实施例涉及无线功率传输。 操作无线接收机的方法可以包括用接收天线接收无线电力并将功率从接收天线传送到可计费元件。 该方法还可以包括在检测到可充电元件充满电时将接收天线与可充电元件电隔离。