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公开(公告)号：US10277062B2
公开(公告)日：2019-04-30
申请号：US14813571
申请日：2015-07-30
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , William Henry Von Novak, III , Linda Stacey Irish
Abstract: A system for detecting and characterizing an object proximate to a wireless power transmitting unit includes a transmit circuit having a transmit antenna, the transmit circuit configured to transmit at least one signal having a frequency related to a fundamental power transmit frequency, the transmit circuit configured to measure a response of the transmit antenna, and a controller circuit configured to characterize the object based on the response of the transmit antenna.
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2.发明申请METHODS AND APPARATUS FOR IMPLEMENTING PRESENCE AND USAGE PATTERN DETECTION IN WIRELESS CHARGING APPLICATIONS 审中-公开在无线充电应用中实现存在和使用模式检测的方法和装置公开(公告)号：US20160301252A1
公开(公告)日：2016-10-13
申请号：US15090920
申请日：2016-04-05
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , William Henry Von Novak, III , Mei-Li Chi
CPC classification number: H02J50/12 , H02J7/025 , H02J50/60 , H02J50/80 , H04B5/0037 , H04B5/0043
Abstract: An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a coupler configured to generate a wireless field when driven with a time-varying current. The apparatus comprises a measurement circuit configured to determine a parasitic capacitance between the coupler and ground while the coupler generates the wireless field. The apparatus comprises a controller circuit configured to determine a presence of a foreign object in response to the determined parasitic capacitance satisfying a detection criteria. The detection criteria may comprises a time-varying pattern of the determined parasitic capacitance predetermined to correspond to presence of a presence of the foreign object. The detection criteria may also comprises a threshold change in the determined parasitic capacitance predetermined to correspond to presence of a presence of the foreign object.
Abstract translation: 提供了一种用于无线传送充电电力的装置。 该装置包括被配置为当以时变电流驱动时产生无线场的耦合器。 该装置包括测量电路，其被配置为在耦合器产生无线区域时确定耦合器和地之间的寄生电容。 该装置包括控制器电路，其被配置为响应于确定的满足检测标准的寄生电容来确定异物的存在。 检测标准可以包括所确定的寄生电容的时变模式，其被预定为对应于存在异物的存在。 检测标准还可以包括所确定的寄生电容的阈值变化，预先确定的寄生电容对应于存在异物的存在。
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公开(公告)号：US09784777B2
公开(公告)日：2017-10-10
申请号：US14495458
申请日：2014-09-24
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , Joseph Najib Maalouf
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.
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4.发明申请SYSTEM AND METHOD FOR DETECTING AND CHARACTERIZING AN OBJECT FOR WIRELESS CHARGING 审中-公开用于检测和表征无线充电对象的系统和方法公开(公告)号：US20170033591A1
公开(公告)日：2017-02-02
申请号：US14813571
申请日：2015-07-30
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , William Henry Von Novak, III , Linda Stacey Irish
CPC classification number: H02J7/042 , B60L11/182 , H02J5/005 , H02J7/025 , H02J50/10 , H02J50/60 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
Abstract: A system for detecting and characterizing an object proximate to a wireless power transmitting unit includes a transmit circuit having a transmit antenna, the transmit circuit configured to transmit at least one signal having a frequency related to a fundamental power transmit frequency, the transmit circuit configured to measure a response of the transmit antenna, and a controller circuit configured to characterize the object based on the response of the transmit antenna.
Abstract translation: 用于检测和表征靠近无线电力发送单元的对象的系统包括具有发射天线的发射电路，所述发射电路被配置为发送具有与基本功率发射频率相关的频率的至少一个信号，所述发射电路被配置为 测量发射天线的响应，以及被配置为基于发射天线的响应来表征对象的控制器电路。
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公开(公告)号：US20160359467A1
公开(公告)日：2016-12-08
申请号：US14730066
申请日：2015-06-03
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , William Henry Von Novak, III
Abstract: An apparatus for wireless power transfer may include a resonator circuit configured to couple to an externally generated magnetic field to produce an AC current. A rectifier circuit may be configured to produce a DC signal from the AC current. A variable impedance circuit may be electrically connected as an electrical load to an output of the rectifier circuit. A control circuit may be configured to produce a control signal based on an electrical characteristic of the DC signal produced at the output of the rectifier circuit. The variable impedance circuit may be configured to change its impedance in response to the control signal of the control circuit.
Abstract translation: 一种用于无线功率传输的装置可以包括被配置为耦合到外部产生的磁场以产生AC电流的谐振器电路。 整流电路可以被配置为从AC电流产生DC信号。 可变阻抗电路可以作为电负载电连接到整流器电路的输出。 控制电路可以被配置为基于在整流器电路的输出处产生的DC信号的电特性来产生控制信号。 可变阻抗电路可以被配置为响应于控制电路的控制信号改变其阻抗。
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Patent Agency Ranking
公开(公告)号：US10790691B2
公开(公告)日：2020-09-29
申请号：US15471521
申请日：2017-03-28
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , Sumukh Shevde , Joseph Maalouf
Abstract: Techniques for wired and wireless charging of electronic devices are provided. An example of a method for charging a device according to the disclosure includes receiving a signal from a power source with an electronic circuit, such that the electronic circuit includes a synchronous rectifier comprising a first phase leg and a second phase leg, utilizing the first phase leg to implement synchronous rectification and the second phase leg to implement a single phase buck converter when the signal is a wireless signal received from the power source, utilizing the first phase leg and the second phase leg to implement a multi-phase buck converter when the signal is received from a wired power source, and providing an output signal with the electronic circuit.
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公开(公告)号：US20180219418A1
公开(公告)日：2018-08-02
申请号：US15423341
申请日：2017-02-02
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj
Abstract: An aspect of this disclosure is an apparatus for receiving power wirelessly. The apparatus comprises a power transmission circuit and a power transceiver circuit. The power transmission circuit has a first antenna and is configured to provide power sufficient to charge a receiver via a first magnetic field. The power transmission circuit experiences a level of impedance based at least in part on an impedance of the receiver. The power transceiver circuit has a transceiver impedance and operates in a first mode and a second mode. In the first mode, the power transceiver circuit is configured to generate a second magnetic field. In the second mode, the power transceiver circuit is configured to receive power from the first magnetic field and maintain the level of impedance experienced by the power transmission circuit within a target impedance range based on controlling variations in the transceiver impedance.
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8.发明申请Rectifiers for Wireless Power Transfer with Impedance Inverting Filters for Reduced Electromagnetic Interference 有权用于具有阻抗反相滤波器的无线功率传输整流器，用于降低电磁干扰公开(公告)号：US20170070249A1
公开(公告)日：2017-03-09
申请号：US14844140
申请日：2015-09-03
Applicant: QUALCOMM Incorporated
Inventor： Linda Stacey Irish , Arvind Govindaraj , Paolo Menegoli
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.
Abstract translation: 描述谐振整流器拓扑，用于调谐整流器，使其从电磁干扰（EMI）角度执行，同时保持串联调谐整流器将保持的输出处的电压调节。 示例包括接收耦合器的电感器和可连接以驱动负载的整流器以及第一和第二滤波器元件，第一和第二滤波器元件被配置为在频带中提供阻抗反转功能，并且串联连接在电感器 接收耦合器和整流器。 在一组示例中，两个滤波器元件被实现为对滤波器，而在其它示例中，第一滤波器元件包括与连接到地的电容并联的接收耦合器的电感器。
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公开(公告)号：US10411512B2
公开(公告)日：2019-09-10
申请号：US15090920
申请日：2016-04-05
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj , William Henry Von Novak, III , Mei-Li Chi
Abstract: An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a coupler configured to generate a wireless field when driven with a time-varying current. The apparatus comprises a measurement circuit configured to determine a parasitic capacitance between the coupler and ground while the coupler generates the wireless field. The apparatus comprises a controller circuit configured to determine a presence of a foreign object in response to the determined parasitic capacitance satisfying a detection criteria. The detection criteria may comprises a time-varying pattern of the determined parasitic capacitance predetermined to correspond to presence of a presence of the foreign object. The detection criteria may also comprises a threshold change in the determined parasitic capacitance predetermined to correspond to presence of a presence of the foreign object.
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公开(公告)号：US20180219524A1
公开(公告)日：2018-08-02
申请号：US15423395
申请日：2017-02-02
Applicant: QUALCOMM Incorporated
Inventor： Arvind Govindaraj
Abstract: A wireless power receiver includes: a power-receiving antenna configured to receive power wirelessly from a transmitter; power-processing circuitry that is coupled to the power-receiving antenna to receive power from the power-receiving antenna and that is configured to process the power received from the power-receiving antenna; and a controller communicatively coupled to the power-processing circuitry and configured to: determine a value of a dynamic parameter indicative of at least one of content of the power-processing circuitry, operation of the power-processing circuitry, or a relationship between the receiver and the transmitter; and determine an estimated impedance using the value of the dynamic parameter, the estimated impedance being an estimate of at least a portion of reflected impedance presented to the transmitter by the receiver.
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