公开(公告)号：US20180198321A1

公开(公告)日：2018-07-12

申请号：US15400746

申请日：2017-01-06

Applicant: QUALCOMM Incorporated

Inventor： Arvind Govindaraj

IPC: H02J50/30 ,  H02J50/15 ,  H02N2/18 ,  A61N1/378 ,  A61B5/00

CPC classification number: H02J50/30 ,  A61B5/686 ,  A61B2560/0219 ,  A61F2250/0001 ,  A61M2205/8237 ,  A61N1/3787 ,  H01L41/1136 ,  H02J7/025 ,  H02J50/15 ,  H02J50/20

Abstract: The present disclosure describes aspects of a multiphysics energy harvester for implants. In some aspects, an apparatus includes a multiphysics energy (MPE) harvester to harvest energy from at least a first and second type of wireless power transfer signal. The MPE harvester includes a first harvesting component configured to react to the first type of wireless power transfer signal, effective to harvest energy from the first type of wireless power transfer signal. The MPE harvester also includes a second harvesting component that is integral with the first harvesting component. The second harvesting component is configured to react to the second type of wireless power transfer signal simultaneously as the first harvesting component reacts to the first type of wireless power transfer signal. The reactions of the second harvesting component are effective to harvest energy from the second type of wireless power transfer signal.

公开(公告)号：US20160084894A1

公开(公告)日：2016-03-24

申请号：US14495458

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

Inventor： Arvind Govindaraj ,  Joseph Najib Maalouf

IPC: G01R25/00 ,  H03H21/00 ,  H03H7/20 ,  H02J5/00

CPC classification number: G01R25/00 ,  G01R25/005 ,  G01R25/04 ,  H02J7/025 ,  H02J50/80 ,  H03K2005/00286 ,  H04B5/0037 ,  H04B5/0043

Abstract: The invention provides a method and system for precisely measuring AC power and detecting load impedance using a precise analog front-end, zero-crossing detectors, and a phase detection system capable of extracting precise phase information from the sensed voltage and current measurements. More particularly, the invention provides an apparatus, comprising a transmit circuit configured to generate a wireless field via an antenna for transferring charging power to a receiver device, for determining a phase difference between a first signal and a second signal. The apparatus further comprises a phase detection circuit to output a phase signal indicating a duration of a phase offset between a time-varying voltage and a time-varying current of the transmit circuit. The apparatus further comprises a capacitor configured to receive a variable current from a current source for the duration of the phase offset between the time-varying voltage and a time-varying current.

Abstract translation: 本发明提供了一种使用精确的模拟前端，零交叉检测器和能够从感测的电压和电流测量中提取精确相位信息的相位检测系统来精确测量AC电力并检测负载阻抗的方法和系统。 更具体地说，本发明提供了一种装置，包括：发射电路，被配置为经由天线产生无线场，用于将充电功率传送到接收机设备，以确定第一信号和第二信号之间的相位差。 该装置还包括相位检测电路，用于输出指示发射电路的时变电压和时变电流之间的相位偏移的持续时间的相位信号。 该装置还包括电容器，其被配置为在时变电压和时变电流之间的相位偏移的持续时间内从电流源接收可变电流。

公开(公告)号：US10396598B2

公开(公告)日：2019-08-27

申请号：US15273564

申请日：2016-09-22

Applicant: QUALCOMM Incorporated

Inventor： Arvind Govindaraj ,  William Henry Von Novak, III

IPC: H02J50/12 ,  H02J50/27 ,  H02J50/80 ,  H02J50/10 ,  H02J7/02 ,  H02J5/00

Abstract: An aspect of this disclosure is an apparatus for receiving power wirelessly. The apparatus comprises a power receiver circuit that receives power from a magnetic field of a transmitter to provide to a load. At least one receiver component is coupled with the power receiver circuit and operates based on at least one operation parameter. A sensor measures at least one of a current and a voltage at the load. A controller estimates a first voltage induced by the magnetic field based on the at least one measured current and measured voltage and the at least one operation parameter. The controller also estimates a second voltage based on the at least one operation parameter, the second voltage corresponding to a voltage at which the power receiver circuit operates with an efficiency level that exceeds a threshold efficiency. The communication circuit communicates the estimated voltages to the transmitter.

公开(公告)号：US20180083489A1

公开(公告)日：2018-03-22

申请号：US15273564

申请日：2016-09-22

Applicant: QUALCOMM Incorporated

Inventor： Arvind Govindaraj ,  William Henry Von Novak, III

IPC: H02J50/12 ,  H02J50/27 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/10 ,  H02J50/27 ,  H02J50/80

Abstract: An aspect of this disclosure is an apparatus for receiving power wirelessly. The apparatus comprises a power receiver circuit that receives power from a magnetic field of a transmitter to provide to a load. At least one receiver component is coupled with the power receiver circuit and operates based on at least one operation parameter. A sensor measures at least one of a current and a voltage at the load. A controller estimates a first voltage induced by the magnetic field based on the at least one measured current and measured voltage and the at least one operation parameter. The controller also estimates a second voltage based on the at least one operation parameter, the second voltage corresponding to a voltage at which the power receiver circuit operates with an efficiency level that exceeds a threshold efficiency. The communication circuit communicates the estimated voltages to the transmitter.

公开(公告)号：US09923584B2

公开(公告)日：2018-03-20

申请号：US14844140

申请日：2015-09-03

Applicant: QUALCOMM Incorporated

Inventor： Linda Stacey Irish ,  Arvind Govindaraj ,  Paolo Menegoli

IPC: H04B1/10 ,  H02J5/00 ,  H02J7/02 ,  H02J7/04 ,  H02J50/12

CPC classification number: H04B1/1027 ,  H02J5/005 ,  H02J7/025 ,  H02J7/04 ,  H02J50/12

Abstract: Resonant rectifier topologies are described for tuning the rectifier so that it performs from an electromagnetic interference (EMI) point of view, while maintaining the voltage regulation at the output that a series tuned rectifier would maintain. Examples include a an inductor of a receive coupler and a rectifier connectable to drive a load, along with first and second filter elements that are each configured to provide an impedance inversion function in a frequency band and that are connected in series between the inductor of a receive coupler and rectifier. In one set of examples, both filter elements are implemented as pair filters, while in other examples the first filter element includes the inductor of a receive coupler in parallel with a capacitance connected to ground.

公开(公告)号：US20160181849A1

公开(公告)日：2016-06-23

申请号：US14578819

申请日：2014-12-22

Applicant: QUALCOMM Incorporated

Inventor： Arvind Govindaraj

IPC: H02J7/02 ,  H02J7/00

CPC classification number: H02J7/025 ,  H02J7/007 ,  H02J50/40

Abstract: The invention described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, an apparatus for wirelessly transmitting power is provided. The apparatus may comprise a wireless power transmitter and a charging surface. The charging surface at least partially covers the wireless power transmitter and is formed with an array of orthogonally disposed protrusions. The protrusions are configured to extend away from the charging surface.

Abstract translation: 本文描述的本发明涉及有效和安全地将电力传送到电子设备的无线电力传送系统和方法。 在本公开的一方面，提供了一种用于无线发送功率的装置。 该装置可以包括无线电力发射器和充电表面。 充电表面至少部分地覆盖无线功率发射器，并且形成有正交设置的突起的阵列。 这些突出部构造成远离充电表面延伸。