公开(公告)号：US08674551B2

公开(公告)日：2014-03-18

申请号：US12994478

申请日：2009-06-08

申请人： Zhen Ning Low ,  Jenshan Lin ,  Raul Andres Chinga

发明人： Zhen Ning Low ,  Jenshan Lin ,  Raul Andres Chinga

IPC分类号： H01F27/42 ,  H01F37/00 ,  H01F38/00

CPC分类号： H02J50/12 ,  H02J5/005 ,  H02J7/025

摘要： Embodiments of the subject invention pertain to a method and apparatus for contactless power transfer. A specific embodiment relates to an impedance transformation network, a new class of load network for application to a contactless power system. Embodiments of the impedance transformation network enable a contactless power system to operate without encountering the common problems of: 1) over-voltage and/or under-voltage conditions; 2) over-power and/or under-power conditions; 3) power oscillations; and 4) high heat dissipation.

摘要翻译： 本发明的实施例涉及一种用于非接触式电力传送的方法和装置。 具体实施例涉及阻抗变换网络，用于应用于非接触式电力系统的新类型的负载网络。 阻抗变换网络的实施例使得非接触式电力系统能够运行，而不会遇到以下常见问题：1）过电压和/或欠压条件; 2）过功率和/或功率不足的情况; 3）功率振荡; 和4）高散热。

公开(公告)号：US20130062959A1

公开(公告)日：2013-03-14

申请号：US13464834

申请日：2012-05-04

申请人： Kevin Douglas Lee ,  Zhen Ning Low

发明人： Kevin Douglas Lee ,  Zhen Ning Low

IPC分类号： H02J17/00

CPC分类号： H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J50/90 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0043 ,  H04B5/0056 ,  H04B5/0075 ,  H04B5/02

摘要： Embodiments are directed to detecting and identifying a type of a wireless power device in a wireless power transfer field. According to one aspect, systems and methods are disclosed which describe limiting power transfer to non-compliant devices and detection of undesired power absorbers, such as metal objects, in a wireless power system. A method may include detecting one or more non-compliant devices and/or undesired wireless power absorbers positioned within a charging region of a wireless power transmitter. The method may further include limiting an amount of power transmitted by a transmitter in response to the detection, or reducing the amount of power received by the non-compliant device.

摘要翻译： 实施例涉及在无线电力传输领域中检测和识别无线电力装置的类型。 根据一个方面，公开了系统和方法，其描述了在无线电力系统中限制向不兼容设备的功率传输和检测不期望的功率吸收器（例如金属物体）。 一种方法可以包括检测位于无线功率发射器的充电区域内的一个或多个非顺从装置和/或不期望的无线功率吸收器。 该方法还可以包括限制响应于检测的发射机发射的功率量，或者减少由非兼容设备接收的功率量。

公开(公告)号：US20120242284A1

公开(公告)日：2012-09-27

申请号：US13424834

申请日：2012-03-20

申请人： Charles Edward Wheatley, III ,  Zhen Ning Low ,  Stanley Slavko Toncich ,  Ngo Van Nguyen ,  Cody B. Wheeland

发明人： Charles Edward Wheatley, III ,  Zhen Ning Low ,  Stanley Slavko Toncich ,  Ngo Van Nguyen ,  Cody B. Wheeland

IPC分类号： H02J7/00 ,  H03F3/04 ,  H03F3/217 ,  H03H7/38

CPC分类号： H02J50/12 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40

摘要： This disclosure provides systems, methods and apparatus for increasing the efficiency of an amplifier when driven by a variable load. In one aspect a transmitter device is provided. The transmitter device includes a driver circuit characterized by an efficiency. The driver circuit is electrically connected to a transmit circuit characterized by an impedance. The transmitter device further includes a filter circuit electrically connected to the driver circuit and configured to modify the impedance to maintain the efficiency of the driver circuit at a level that is within 20% of a maximum efficiency of the driver circuit. The impedance is characterized by a complex impedance value that is within a range defined by a real first impedance value and a second real impedance value. A ratio of the first real impedance value to the second real impedance value is at least two to one.

摘要翻译： 本公开提供了当由可变负载驱动时增加放大器的效率的系统，方法和装置。 在一个方面，提供发射机设备。 发射机装置包括以效率为特征的驱动电路。 驱动电路电连接到以阻抗为特征的发送电路。 发射机设备还包括电连接到驱动器电路并被配置为修改阻抗以将驱动器电路的效率维持在驱动器电路的最大效率的20％以内的水平的滤波器电路。 阻抗的特征在于在由实际第一阻抗值和第二实际阻抗值限定的范围内的复阻抗值。 第一实际阻抗值与第二实际阻抗值之比至少为2比1。

公开(公告)号：US08232793B2

公开(公告)日：2012-07-31

申请号：US12209784

申请日：2008-09-12

申请人： Jenshan Lin ,  Zhen Ning Low

发明人： Jenshan Lin ,  Zhen Ning Low

IPC分类号： G01R1/20 ,  G01R15/18

CPC分类号： H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/40 ,  H02J50/80

摘要： Embodiments of the subject invention relate to a method and apparatus for determining information regarding a load in a planar wireless power transfer system by extracting system operating parameters from one or more test points in the transmitter circuit. As shown in FIG. 1, a specific embodiment showing three test points in the transmitter circuit from which operating parameters can be extracted. The transmitter circuit is designed to produce a magnetic field, by driving the transmitter coil, which inductively couples to a receiver coil such that power is provided to a receiver. By extracting operating parameters from the transmitter circuit, the receiver does not need to incorporate sophisticated signal processing and can be manufactured with low cost.

摘要翻译： 本发明的实施例涉及一种通过从发射机电路中的一个或多个测试点提取系统操作参数来确定关于平面无线电力传输系统中的负载的信息的方法和装置。 如图所示。 在图1中，示出了能够提取操作参数的发射机电路中的三个测试点的具体实施例。 发射机电路被设计为通过驱动发射器线圈产生磁场，该发射器线圈感应地耦合到接收器线圈，使得向接收器提供功率。 通过从发射机电路提取操作参数，接收机不需要结合复杂的信号处理，并且可以以低成本制造。

公开(公告)号：US20120155344A1

公开(公告)日：2012-06-21

申请号：US13213005

申请日：2011-08-18

申请人： George A. Wiley ,  Zhen Ning Low

发明人： George A. Wiley ,  Zhen Ning Low

IPC分类号： H04W4/00

CPC分类号： H04B5/0025 ,  H02J7/025 ,  H02J50/12 ,  H02J50/70 ,  H02J50/90 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0043 ,  H04B5/0087

摘要： Exemplary embodiments are directed to communication with a wireless power transmitter. A device may include an antenna for wirelessly transmitting a power carrier. The device may further include transmit circuitry coupled to the antenna and configured to transmit a data carrier at a frequency corresponding to at least one harmonic of the power carrier.

摘要翻译： 示例性实施例涉及与无线电力发射机的通信。 设备可以包括用于无线发送功率载波的天线。 该设备还可以包括耦合到天线并被配置为以对应于电力载波的至少一个谐波的频率发送数据载波的发射电路。

公开(公告)号：US20110260682A1

公开(公告)日：2011-10-27

申请号：US12951269

申请日：2010-11-22

申请人： Zhen Ning Low ,  Charles E. Wheatley, III ,  William H. Von Novak

发明人： Zhen Ning Low ,  Charles E. Wheatley, III ,  William H. Von Novak

IPC分类号： H02J7/00

CPC分类号： H03H7/40 ,  H02J5/005 ,  H02J7/0027 ,  H02J7/025 ,  H02J50/12 ,  H02J50/20 ,  H02J50/90 ,  H04B5/0037 ,  H04B5/0081

摘要： Exemplary embodiments are directed to power distribution among a plurality of receivers. A method may include requesting at least one receiver of a plurality of receivers within a charging region of a transmitter to modify an associated load resistance to achieve a desired power distribution among the plurality of receivers. The method may further include requesting each receiver of the plurality of receivers to modify an associated load resistance to achieve a desired total impedance as seen by the transmitter while maintaining the desired power distribution among the plurality of receivers.

摘要翻译： 示例性实施例涉及多个接收器之间的功率分配。 方法可以包括请求发射机的充电区域内的多个接收机的至少一个接收机来修改相关联的负载电阻以在多个接收机之间实现期望的功率分配。 该方法还可以包括请求多个接收机中的每个接收机修改相关联的负载电阻以实现由发射机看到的期望的总阻抗，同时保持多个接收机之间的所需功率分配。

公开(公告)号：US20100066349A1

公开(公告)日：2010-03-18

申请号：US12209784

申请日：2008-09-12

申请人： Jenshan Lin ,  Zhen Ning Low

发明人： Jenshan Lin ,  Zhen Ning Low

IPC分类号： G01R19/00

CPC分类号： H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/40 ,  H02J50/80

摘要： Embodiments of the subject invention relate to a method and apparatus for determining information regarding a load in a planar wireless power transfer system by extracting system operating parameters from one or more test points in the transmitter circuit. As shown in FIG. 1, a specific embodiment showing three test points in the transmitter circuit from which operating parameters can be extracted. The transmitter circuit is designed to produce a magnetic field, by driving the transmitter coil, which inductively couples to a receiver coil such that power is provided to a receiver. By extracting operating parameters from the transmitter circuit, the receiver does not need to incorporate sophisticated signal processing and can be manufactured with low cost.

摘要翻译： 本发明的实施例涉及一种通过从发射机电路中的一个或多个测试点提取系统操作参数来确定关于平面无线电力传输系统中的负载的信息的方法和装置。 如图所示。 在图1中，示出了能够提取操作参数的发射机电路中的三个测试点的具体实施例。 发射机电路被设计为通过驱动发射器线圈产生磁场，该发射器线圈感应地耦合到接收器线圈，使得向接收器提供功率。 通过从发射机电路提取操作参数，接收机不需要结合复杂的信号处理，并且可以以低成本制造。

公开(公告)号：US09673872B2

公开(公告)日：2017-06-06

申请号：US13549314

申请日：2012-07-13

申请人： Sreenivas Kasturi ,  Zhen Ning Low

发明人： Sreenivas Kasturi ,  Zhen Ning Low

IPC分类号： H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H04B5/00

CPC分类号： H04B5/0087 ,  H04B5/0037

摘要： This disclosure provides systems, methods and apparatus for tuning a transmit antenna for operation in a plurality of frequency bands. In one aspect, a transmitting antenna system is provided. The transmitting antenna system includes an active transmit antenna and a tunable passive antenna. The active antenna is configured to transmit a field over a plurality of operating frequencies. The passive antenna is configured to transmit a field over at least two frequencies of the plurality of operating frequencies. In one aspect, the tunable passive antenna includes a network of a plurality of reactive elements. In another aspect, the plurality of operating frequencies is selected from a set including a charging frequency, an NFC frequency, and a communication frequency.

公开(公告)号：US09509167B2

公开(公告)日：2016-11-29

申请号：US13608795

申请日：2012-09-10

申请人： Jatupum Jenwatanavet ,  Zhen Ning Low ,  Nikhil Jain

发明人： Jatupum Jenwatanavet ,  Zhen Ning Low ,  Nikhil Jain

IPC分类号： H02J7/00 ,  H02J7/02 ,  H04B5/00 ,  H02J17/00

CPC分类号： H02J50/10 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H04B5/0037

摘要： An apparatus for wirelessly receiving power comprises a battery at least partially covered by magnetic material and a radio frequency (RF) charge energy receiving antenna surrounding the magnetic material and electrically coupled to the battery through a circuit card assembly (CCA).

摘要翻译： 用于无线接收功率的装置包括至少部分地被磁性材料覆盖的电池和围绕磁性材料并通过电路卡组件（CCA）电耦合到电池的射频（RF）电荷能量接收天线。

公开(公告)号：US09496755B2

公开(公告)日：2016-11-15

申请号：US13435343

申请日：2012-03-30

申请人： Zhen Ning Low ,  Sreenivas Kasturi ,  Xuanning Gao

发明人： Zhen Ning Low ,  Sreenivas Kasturi ,  Xuanning Gao

IPC分类号： H02M1/14 ,  H02J17/00 ,  H02M1/12

CPC分类号： H02J50/12 ,  H02J7/025 ,  H02J17/00 ,  H02J50/10 ,  H02M1/126 ,  H02M1/14 ,  H02M1/143

摘要： This disclosure provides systems, methods, and apparatus for filtering of a rectifier in a wireless power receiver. In one aspect a wireless power receiver is provided. The wireless power receiver includes a rectifier circuit configured to provide direct-current (DC) based at least in part on a time-varying voltage generated via a wireless field provided from a wireless power transmitter. The wireless power receiver further includes a band-stop filter circuit configured to filter an output of the rectifier circuit and electrically isolate a capacitor from the rectifier circuit at an operating frequency.

摘要翻译： 本公开提供了用于在无线电力接收器中对整流器进行滤波的系统，方法和装置。 在一个方面，提供无线电力接收器。 无线电力接收机包括整流器电路，其被配置为至少部分地基于由无线电力发射器提供的无线电场产生的时变电压来提供直流电（DC）。 无线电力接收器还包括带通滤波器电路，其被配置为对整流器电路的输出进行滤波，并且以工作频率将电容器与整流器电路电隔离。