Electromagnet Or Highly Inductive Systems Patents (Class 307/104)
  • Patent number: 10693328
    Abstract: A wireless power transfer standard selector of a power receiving device and a method therefor are disclosed. A wireless power transfer standard selector according to one embodiment comprises: a frequency sensor for sensing an input frequency of a rectifier; a boot attempt counter for counting and storing the number of bootings in which an output voltage of a power converter is generated and then disappears; and a selection unit for selecting a wireless power transfer standard method by using the input frequency sensed through the frequency sensor and/or the number of bootings counted through the boot attempt counter.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 23, 2020
    Assignee: MAPS, INC.
    Inventors: Jong Tae Hwang, Dong Su Lee, Jong Hoon Lee, Ki Woong Jin, Hyun Ick Shin, Joon Rhee
  • Patent number: 10692651
    Abstract: A coil unit for inductive transfer of energy has an induction coil and a ferrite core which cooperates with the induction coil. The ferrite core is produced from a fiber reinforced ceramic material. A motor vehicle is equipped with such a coil unit.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: June 23, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Cornelius Johan Kalle Keil, Stefan Opl, Hartmut Eggers, Josef Krammer, Tobias Mueller
  • Patent number: 10693299
    Abstract: Systems and designs for tuning a wireless power transfer system are provided, which may include any number of features. In one embodiment, a wireless power transfer system can be configured such that resonant frequencies of the system move towards an operating frequency of the system as a coupling coefficient between the transmit and receive resonators becomes smaller. In another embodiment, a receive controller can be configured to control a current delivered to a DC load by comparing an actual current at the DC load to a current requested by the DC load and adjusting an angle or a magnitude of a voltage at the DC load to match the requested current. In another embodiment, a rectifier circuit can act as a controlled voltage source and be configured to tune resonant frequencies between the transmit resonator and the receive resonator. Methods of use are also provided.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: June 23, 2020
    Assignee: TC1 LLC
    Inventors: Ethan Petersen, John Freddy Hansen
  • Patent number: 10693326
    Abstract: Disclosed is a wireless power receiving apparatus capable of controlling an effective load resistance. The wireless power receiving apparatus may include a rectifier configured to generate a rectified voltage based on a magnetic field generated in a wireless power transmitting apparatus, and a controller configured to transmit, to the rectifier, a control signal for controlling a rectified phase of the rectifier to adjust an effective load resistance of the wireless power receiving apparatus.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: June 23, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-Min Kim, Sang-Won Kim, Jung Ick Moon, In Kui Cho, Je Hoon Yun, Dong Won Jang
  • Patent number: 10686331
    Abstract: A signal modulation method for a receiving-end module of an induction type power supply system includes configuring a plurality of modulation periods corresponding to a modulation signal; performing modulation on a first terminal of an induction coil of the receiving-end module during the ith modulation period among the plurality of modulation periods, wherein i is an odd number; and performing modulation on a second terminal of the induction coil of the receiving-end module during the jth modulation period among the plurality of modulation periods, wherein j is an even number; wherein the second terminal does not undergo modulation when the first terminal is being modulated, and the first terminal does not undergo modulation when the second terminal is being modulated.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: June 16, 2020
    Assignee: Fu Da Tong Technology Co., Ltd.
    Inventors: Ming-Chiu Tsai, Chi-Che Chan
  • Patent number: 10680465
    Abstract: A wireless power transmitter may comprise: a signal generation unit which generates a differential signal; an amplifier which amplifies the differential signal with a predetermined gain; a resonance unit which generates an electromagnetic wave using the amplified differential signal and radiates the same; and a signal adjustment unit which senses at least one of the current and the voltage of the amplified differential signal at the input terminal of the resonance unit, and adjusts at least one of the phase and the amplitude of the differential signal output from the signal generation unit, on the basis of the result of the sensing.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: June 9, 2020
    Assignees: Samsung Electronics Co., Ltd., KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Sung-Ku Yeo, Hyun-Jun Ahn, Yun-Seong Eo, Sung-Bum Park
  • Patent number: 10680468
    Abstract: A wireless energy extracting device includes: a radio frequency (RF) generator module for wirelessly receiving an RF charging signal to generate electrical energy; a capacitor module; and an energy management module coupled to the RF generator module and the capacitor module, and used to be coupled further to an energy consuming device. The energy management module performs electrical energy transfer from at least the RF generator module to at least the energy consuming device. Therefore, the wireless energy extracting device has relatively low electrical energy loss and thus relatively high energy usage efficiency.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: June 9, 2020
    Assignee: TLHM CO., LTD.
    Inventors: Nai-Chen Wang, Yong-Keong Tay, Chia-Chen Chang
  • Patent number: 10673285
    Abstract: Various embodiments related to electronic devices are set forth herein. According to an embodiment, an electronic device comprises a coil, a power transmitting circuit electrically connected with the coil, a sensing circuit, and a control circuit. The control circuit is configured to wirelessly output, using the power transmitting circuit, a first designated power through the coil to an external electronic device, and identify, using the sensing circuit, first energy detected at the coil due to a foreign object of the electronic device. The control circuit is further configured to, when a magnitude of the energy falls within a first designated range, output, using the power transmitting circuit, a second designated power to the external electronic device, and when the magnitude of the energy falls within a second designated range, abstain from outputting the power to the external electronic device using the power transmitting circuit. Other embodiments are possible as well.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 2, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mincheol Ha, Changhak O, Kwangseob Kim, Dongzo Kim, Jiwon Kim, Jongchul Hong, Kihyun Kim, Yunjeong Noh, Jaewan Park, Hyungkoo Chung, Jihye Kim, Keumsu Song, Yongsang Yun, Sangmoo Hwangbo
  • Patent number: 10673249
    Abstract: A method of detecting a foreign object presence between a wireless power transmitter and a wireless power receiver, the wireless power transmitter comprising a primary coil for transferring power wirelessly to a secondary coil of the wireless power receiver, comprises: transmitting a calibration ping signal; measuring and recording decay time of the calibration ping signal; transmitting test ping signal; measuring and recording decay time of the test ping signal; and determining the foreign object presence if the decay time of the test ping signal is smaller than decay time of the calibration ping signal and if an absolute value of a difference between them is above a threshold.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: June 2, 2020
    Assignee: POWERMAT TECHNOLOGIES LTD.
    Inventors: Ilya Gluzman, Oola Greenwald, Elieser Mach, Oz Moshkovich, Guy Raveh
  • Patent number: 10673278
    Abstract: Provided is a wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device including a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil, a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil, and a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 2, 2020
    Assignees: Electronics and Telecommunications Research Institute, DONGYANG E&P INC.
    Inventors: Jung Ick Moon, Seong Uk Baek, Byoung In Lee, Woo Chul Lee, Jong Seup Lee, Dong Woo Cheon, Sang Bong Jeon, Seong Min Kim, Duk Ju Ahn, In Kui Cho, Byung Chan Kim, Je Hoon Yun, Dong Won Jang, Hyung Do Choi
  • Patent number: 10671103
    Abstract: A voltage supply apparatus for supplying a voltage to a detection circuit, including a power supply filter (4) and a control section (5) which supply a sensor drive voltage Vbg to a sensor device (2) having a ratiometric characteristic. The power supply filter (4) has supply paths PL1 and PL2. The control section (5) determines whether or not a switching determination time has elapsed after startup. In the case where the switching determination time has not yet elapsed, the power supply filter (4) supplies the sensor drive voltage Vbg through supply path PL1. In the case where the switching determination time has elapsed, the power supply filter (4) supplies the sensor drive voltage Vbg through supply path PL2. The response of the sensor drive voltage Vbg to a variation in power supply voltage Vcc is slower when supplied through the supply path PL2 than through the supply path PL1.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 2, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Yuzo Higuchi
  • Patent number: 10672551
    Abstract: A power feeding coil that configures a non-contact power feeding system is provided. The power feeding coil is provided with a coil through which an AC current of a specific frequency flows, and a core that forms a section of a circulating magnetic path, which is interlinked with the coil. In the coil, a wire having an insulating covering is wound around a conductor, and a covering thickness of the insulating covering is set so that the influence of a proximity effect that occurs at the specific frequency between adjacent portions of the wire is a predetermined amount or less. According to this configuration, it is possible to freely adjust a separation distance between portions of the conductor by altering the covering thickness; and the occurrence of AC loss caused by a proximity effect may be appropriately suppressed.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: June 2, 2020
    Assignee: FUJI CORPORATION
    Inventors: Masayuki Oki, Shinji Takikawa, Takeshi Nomura, Takahiro Jindo
  • Patent number: 10673286
    Abstract: A communication method of a wireless power transmitter for transferring power in a wireless manner, includes allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for acquiring information of the first wireless power receiver while wireless power is transferred to the first wireless power receiver; transferring the wireless power to the first wireless power receiver by the wireless power transmitter; detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; and generating a collision related signal based on a frequency shift keying (FSK) such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively when first information generated by the first wireless power and second information generated by the second wireless power are in a collision within a first unallocated slot
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 2, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongcheol Park, Jeongkyo Seo, Seonghun Lee, Bongsik Kwak, Jaesung Lee
  • Patent number: 10666091
    Abstract: Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: May 26, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: John D. Joannopoulos, Aristeidis Karalis, Marin Soljacic
  • Patent number: 10658875
    Abstract: A power management circuit is provided. The power management circuit includes a plurality of detectors, wherein each of the plurality of detectors are configured with a different reference threshold voltage level; and a controller coupled to the plurality of detectors and configured to activate a subset of the plurality of detectors at any given time, wherein a subset of the plurality of detectors, when activated, are configured to provide a multi-level voltage level indication on a state of a voltage supply.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 19, 2020
    Assignee: Wiliot, Ltd.
    Inventors: Alon Yehezkely, Ido Yogev
  • Patent number: 10658740
    Abstract: Provided are an antenna unit and a wireless power transmission module. There is provided an antenna unit that includes a circuit board, and a first antenna pattern formed on a surface of the circuit board for wireless power transmission and formed of a single conductor including a plurality of windings. The single conductor has a different line width depending on position. There is provided a wireless power transmission module that includes any one of the antenna units, and a shielding unit disposed on one surface of the antenna unit and configured to shield a magnetic field.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: May 19, 2020
    Assignee: Amotech Co., Ltd.
    Inventors: Jin Won Noh, Hyung-Il Baek, Jae-Il Park
  • Patent number: 10654365
    Abstract: A bifurcated electromagnetic resonator split into two separate coils, a first coil and a second coil. The inductance value of the first coil is substantially equal to the inductance value of the second coil. A matching network comprising passive electronic components, such as capacitors and inductors, is in series with and intermediate to the first coil and the second coil. This results in a resonator having a balanced circuit topology. The bifurcated resonator may be used as a source and/or capture resonator in a wireless power transfer system.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: May 19, 2020
    Assignee: Aptiv Technologies Limited
    Inventor: Boris Borin
  • Patent number: 10658879
    Abstract: A contactless power receiving device includes: a power reception coil unit including a power reception coil configured to contactlessly receive magnetic flux sent from a power supply coil; iron bolts fixing the power reception coil unit to a vehicle body; and a magnetic shield plate configured to suppress diffusion of the magnetic flux received by the power reception coil unit to surroundings. The magnetic shield plate is arranged below all of the iron bolts.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: May 19, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Akihiro Asai
  • Patent number: 10658882
    Abstract: Techniques are described herein for determining which power receiver clients are within a set network and limiting power transmission to these select clients. Ignoring some power requests frees up the wireless power transmission system to preferentially supply power to wireless power receiver clients that are determined to be of higher importance. This may be particularly beneficial within a home or business setting where the wireless power transmission system coverage region extends into locations where unknown devices are located.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: May 19, 2020
    Assignee: Ossia Inc.
    Inventors: Hatem Zeine, Dale Mayes
  • Patent number: 10651675
    Abstract: A semiconductor device package is provided, including a semiconductor device, a magnetic flux generation unit, a molding material, and a conductive slot. The magnetic flux generation unit is surrounding an axis and configured to produce magnetic flux passes through the magnetic flux generation unit. The molding material is surrounding the semiconductor device and the magnetic flux generation unit. The conductive slot is positioned over the molding material, wherein an opening is formed on the conductive slot, and the axis passes through the opening.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 12, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD
    Inventors: Chen-Hua Yu, Hao-Yi Tsai, Tzu-Sung Huang, Ming-Hung Tseng, Hung-Yi Kuo
  • Patent number: 10651694
    Abstract: A wireless power transmission method executed by a power transmitter comprising multi-coils, according to one embodiment of the present invention, comprises the steps of: detecting a second power receiver while transmitting power to a first power receiver; determining at least one primary coil adequate for power transmission; by using the determined at least one primary coil, determining whether the second power receiver supports a shared mode protocol; and if the second power receiver supports the shared mode protocol, transmitting power to the first and second power receivers according to the shared mode protocol, wherein the shared mode protocol may be a protocol for simultaneously managing information exchanges between the power transmitter and multiple power receivers.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: May 12, 2020
    Assignee: LG Electronics Inc.
    Inventor: Yongcheol Park
  • Patent number: 10651693
    Abstract: The present disclosure relates to a method for providing compatibility with a wireless power transmitting device in a wireless power transmitting system. The method includes the steps of: detecting a wireless power receiving device on the basis of a load change; transmitting a request signal for requesting information for a receiving device to the wireless power receiving device; receiving the information for the receiving device from the wireless power receiving device, wherein the information selectively includes version information on standard technical specifications for realizing the wireless power receiving device; and, when the version information is included in the information for the receiving device, performing a wireless power transmitting operation according to the standard technical specifications corresponding to the version information.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 12, 2020
    Assignee: GE HYBRID TECHNOLOGIES, LLC
    Inventors: Yong Gu Yoon, Choon Kil Jung
  • Patent number: 10651685
    Abstract: A wireless transmitter device is configurable and operable to transfer energy to multiple receiver devices at the same time. The transmitter device includes at least one layer of discrete transmitter coils. The wireless transmitter device is configured to enable one or more sections of a charging surface to transfer energy by selectively choosing one or more discrete transmitter coils in the wireless transmitter device based on the position of the receiver device on the charging surface. The size and shape of each section of the charging surface that is used to transfer energy to a receiver device can change dynamically based on each receiver device. Additionally, the process of transferring energy to each receiver device may be adjusted during energy transfer based on conditions specific to each receiver device.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 12, 2020
    Assignee: APPLE INC.
    Inventors: Steven G. Herbst, Todd K. Moyer, Eric S. Jol, Christopher S. Graham, Christopher M. Pinciuc, Brandon R. Garbus
  • Patent number: 10644540
    Abstract: A power transmission device includes a power transmission unit and a voltage-source inverter. A power supply ECU executes turn-on current control for controlling a turn-on current It to a target current Itr by adjusting a drive frequency f of the inverter, turn-on current It indicating an output current of the inverter at a rising of an output voltage of the inverter. A first case is a case where transmission power Ps has a first value which is lower than target power Psr and a second case is a case where the transmission power has a second value which is closer to target power Psr than the first value. The power supply ECU makes a change rate of the drive frequency in the second case lower than in the first case.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 5, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takahiro Misawa
  • Patent number: 10644514
    Abstract: Systems for tuning a wireless power transfer system are provided, which may include any number of features. In one embodiment, a TET system includes a receive resonator is adapted to be implanted in a human patient and is configured to receive wireless power from a transmit resonator. The system can include a controller configured to identify if a foreign object is interfering with the transmission of power or generating an induced voltage in the receive resonator. The controller can also be configured to control the transmit resonator to phase match with the foreign object. Methods of use are also provided.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 5, 2020
    Assignee: TC1 LLC
    Inventor: John Freddy Hansen
  • Patent number: 10637291
    Abstract: An example apparatus includes a feedback loop to: change a direction value when a second current value is greater than a first current value, the second current value being obtained after the first current value; and maintain the direction value when the second current value is less than the first current value. When the direction value corresponds to a first direction value, a summer increases a reference signal by a step size. When the direction value corresponds to a second direction value different than the first direction value, the summer decrease the reference signal by the step size.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 28, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Kosha Mahmodieh, Gianpaolo Lisi, Ali Djabbari, Jingwei Xu, Vijayalakshmi Devarajan
  • Patent number: 10637273
    Abstract: A bidirectional inductive and conductive electrical apparatus can include: an inverter including a first inverter leg, a second inverter leg, and a control switch disposed between a first upper node of the first inverter leg and a second upper node of the second inverter leg; and an inductor component connecting a first middle node the first inverter leg and a second middle node of the second inverter leg, the control switch configured to connect the first upper node to the second upper node under an ON state during inductive power transfer and configured to disconnect the first upper node from the second upper node under an OFF state during conductive power transfer.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 28, 2020
    Assignee: The Florida International University Board of Trustees
    Inventors: Ahmed A. S. Mohamed, Osama A. Mohammed
  • Patent number: 10628150
    Abstract: A method for updating firmware in a wireless charger is implemented when the wireless charger charges a chargeable device. A wireless link is established between the charger and the chargeable device for transferring energy from the charger to the chargeable device. The wireless link also is used to transfer a new version of a firmware program running on the charger, from the chargeable device to the charger. The wireless charger can detect interruption in reception of the new version of the firmware program and identify a breakpoint where the data transfer was interrupted. The wireless charger can resume reception of the firmware program from the breakpoint when the wireless link is re-established. The firmware update can be initiated by an app on the chargeable device.
    Type: Grant
    Filed: January 1, 2019
    Date of Patent: April 21, 2020
    Assignee: NXP USA, Inc.
    Inventors: Gang Li, Fei Chen, Ping Zhao
  • Patent number: 10630115
    Abstract: An object detecting device includes a coil array including coils, short-circuit switches connected in parallel with the coils, an oscillator circuit that outputs, to the coils, a voltage including an alternating current component, selection switches connected between the coils and the oscillator circuit, a detecting circuit that detects an object based on a change in a physical value such as voltage, and a control circuit that opens and closes the short-circuit switches and the selection switches. When a first selection switch is closed, a first short-circuit switch, which is connected to the first selection switch, is opened. The other selection switches are opened, and the other short-circuit switches are closed.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 21, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenichi Asanuma, Tsutomu Sakata, Atsushi Yamamoto, Hiroshi Kanno
  • Patent number: 10630110
    Abstract: A wireless power transmitter includes a sampling controller setting different retrieval sampling points of time for each section, among candidate sampling points of time, in each section of a carrier frequency signal; and a sampling unit configured to sample points of the carrier frequency signal at the different retrieval sampling points of time. The sampling controller compares values sampled by the sampling unit with each other, and determines a determined sampling point based on a comparison result.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: April 21, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Hyun Min, Jae Hyung Lee, Kwang Mook Lee
  • Patent number: 10630112
    Abstract: A method of transmitting a signal by a wireless power transmitter in a wireless charging system, wireless power transmitter, and a wireless power receiver are provided.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 21, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyung-Woo Lee, Keum-Su Song, Hee-Won Jung
  • Patent number: 10630109
    Abstract: A wireless power system includes a receiver. The receiver may include a rectifier coupled to a receiver coil to receive power. The receiver may include a detector coupled to the rectifier to receive a monitor signal from the rectifier. The detector may provide a range signal indicating whether the monitor signal is outside a predetermined range. The receiver further includes an oscillation determiner coupled to the detector to receive the range signal. The oscillation determiner may determine that the rectifier is in an oscillation mode or is not in an oscillation mode. In some embodiments a communication unit is coupled to the oscillation determiner. The oscillation determiner may communicate a power adjustment signal and may request increased power through the communication unit.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 21, 2020
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Nicholaus Smith, Detelin Martchovsky, Tuyen Doan
  • Patent number: 10622825
    Abstract: Systems and methods for dynamic coil area and power adjustment based on device position and sensor fusion feedback from touch, optical, Bluetooth, and specific absorption rate sensor devices may include a charging device that may include a first induction coil having an active length and a processor. The charging device may transmit power wirelessly to a portable device having a second induction coil by coupling the first induction coil and the second induction coil. The charging device may determine an adjusted active length of the first induction coil that may be based on a first charging efficiency of the first induction coil. The processor may electronically switch the active length of the first induction coil to the determined adjusted active length. The processor may transmit the power wirelessly to the portable device to charge a first battery of the portable device.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 14, 2020
    Assignee: Dell Products L.P.
    Inventors: Deeder M. Aurongzeb, Timothy C. Shaw, Benedict Tiong Chee Tay
  • Patent number: 10623060
    Abstract: A method of preventing an abnormality during wireless charging is provided. The method includes transmitting wireless charging power to a plurality of wireless power receivers based on a first power value determined according to a first mode by a wireless power transmitter, determining whether the wireless power transmitter or at least one of the plurality of wireless power receivers satisfies an abnormality occurrence condition, and if the abnormality occurrence condition is satisfied, transmitting wireless charging power to the plurality of wireless power receivers based on a second power value determined according to a second mode by the wireless power transmitter.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: April 14, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyung-Woo Lee, Hee-Won Jung, Keum-Su Song
  • Patent number: 10622141
    Abstract: A wireless power feeding system includes a power transmission device and a power reception device. A power transmission circuit in the power transmission device switches high-frequency power supplied to a power transmission coil. When a reset IC in the power reception device detects switching of high-frequency power by the power transmission circuit, the power reception device changes an input impedance seen from the power transmission circuit to the side where a load circuit is disposed on the basis of the content of a signal to be transmitted to the power transmission device. The power transmission device detects the change in the input impedance and obtains the content of the signal.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: April 14, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Nobuhiro Kawai, Yuki Maeda
  • Patent number: 10622844
    Abstract: A method for detecting a foreign object in a wireless power transmitter, which wirelessly transmits power to a wireless power receiver through a resonant circuit comprised therein, according to one embodiment of the present invention may comprise the steps of: measuring the strength of power transmitted through the resonant circuit in a power transmission step; receiving, from the wireless power receiver, a feedback packet comprising information on a receive power strength; determining whether the information on the receive power strength is normal; when it is determined that a received power strength corresponding to the information on the receive power strength is abnormal, correcting the received power strength by applying a predetermined offset thereto; calculating a path loss on the basis of the measured strength of the transmitted power and the corrected received power strength; and detecting a foreign object by comparing the calculated path loss with a path loss threshold.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: April 14, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Yong Suk Chae
  • Patent number: 10623061
    Abstract: The present invention relates to a stackable connector for wireless transmission of power between separate devices comprising such a connector of a system, in particular of a patient monitoring system, said separate devices comprising such a connector. The connector comprises a housing (301, 407) and a magnetic coupling unit (302) arranged within the housing (301, 407) for transmitting power to and/or receiving power from another device of the system having a counterpart connector by use of inductive coupling. Said magnetic coupling unit includes a flux concentrator (303, 401, 411, 432, 442), at least part of which having a U-shaped cross-section forming a recess (304, 402, 412, 422, 437, 447) between the legs of the U, a first coil (305, 417, 431) arranged within the recess of the flux concentrator, and a second coil (306, 427, 441) arranged outside of the recess in which the first coil (305, 417, 431) is arranged.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 14, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Josephus Arnoldus Henricus Maria Kahlman, Pierre Hermanus Woerlee
  • Patent number: 10622837
    Abstract: When a vehicle approaches a parking space, a ground controller excites a power transmission coil using an excitation pattern signal containing identification data, and a vehicle controller acquires the identification data from the excitation pattern signal received by at least one of subcoils. Then, a communication unit transmits the acquired identification data to the ground unit. The ground controller pairs the power transmission coil and the power reception coil with each other when the identification data contained in the excitation pattern signal and the identification data transmitted from the vehicle controller match each other. Also, the pairing is canceled if the identification data received by the subcoil provided on the front side and the identification data received by the subcoil provided on the rear side are different from each other.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: April 14, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Yukinori Tsukamoto
  • Patent number: 10622842
    Abstract: A wireless power receiver according to an embodiment wirelessly receives power from a wireless power transmitter. The wireless power receiver includes a printed circuit board having a reception space in a predetermined area, a receiving coil disposed in the reception space of the printed circuit board for receiving power from the wireless power transmitter, and a short-range communication antenna disposed on the printed circuit board while surrounding the receiving coil.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: April 14, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Ki Min Lee, Jung Oh Lee
  • Patent number: 10615643
    Abstract: A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: April 7, 2020
    Assignee: GE HYBRID TECHNOLOGIES, LLC
    Inventors: Chun-Kil Jung, Hak Do Kim, Sang Youn Noh
  • Patent number: 10615644
    Abstract: A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: April 7, 2020
    Assignee: GE HYBRID TECHNOLOGIES, LLC
    Inventors: Chun-Kil Jung, Hak Do Kim, Sang Youn Noh
  • Patent number: 10613608
    Abstract: A device with a touch-sensitive display and a battery can determine a battery level of the battery, and in accordance with a determination that the battery level is at or below a first threshold value, cause a haptic output and/or enter a low-power mode. While in low-power mode, the device may produce different outputs in response to user inputs than while in a normal power mode. In some embodiments, while in the low-power mode, the device may display only the time and an indication that the device is in a low-power mode.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: April 7, 2020
    Assignee: Apple Inc.
    Inventors: David Chance Graham, Imran Chaudhri, Alan C. Dye, Christopher Patrick Foss, Jonathan P. Ive, Kevin Lynch, Christopher Wilson, Lawrence Y. Yang
  • Patent number: 10615625
    Abstract: Systems and methods are provided for wireless charging. The system includes an intelligent management device and a wireless charging transmitter. The intelligent management device is configured to: receive a wireless charging request from the mobile terminal; generate a wireless charging instruction according to the first location information of the mobile terminal and the charging location information of the wireless charging transmitter; and send the wireless charging instruction to the wireless charging transmitter. The wireless charging transmitter is configured to: receive the wireless charging instruction; determine a transmitting direction according to the direction information in the wireless charging instruction; and transmit a wireless energy wave in the transmitting direction.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 7, 2020
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventors: Zhijie Li, Wei Sun, Dan Zhu
  • Patent number: 10608474
    Abstract: A wireless power receiving device may have wireless power receiving circuitry with a coil and rectifier. The wireless power receiving circuitry receives wireless power signals and uses the rectifier to supply a corresponding output. The output is characterized by a current, a voltage, and a power equal to a product of the current and voltage. The output of the rectifier is supplied to a direct-current-to-direct-current power regulator integrated circuit, which supplies direct-current power to a system load and battery. A controller integrated circuit directs the power regulator circuit to dither the current while monitoring for a peak in the power. If the power regulator circuit dithers the current satisfactorily, the wireless power receiving circuitry may be operated at the peak power. If the power regulator circuitry does not dither the current in response to being directed to dither the current, a wireless power transmission level may be reduced.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 31, 2020
    Assignee: Apple Inc.
    Inventors: Samuel B. Schaevitz, Cortland S. Tolva, James R. Walker
  • Patent number: 10608473
    Abstract: Provided is a power feeding apparatus in a power feeding system that is configured to transmit, in a contactless fashion, electric power from the power feeding apparatus to a power receiving apparatus by magnetic coupling. The power feeding apparatus includes a power feeding resonator, a power supply, a communicator, and a controller. The power supply is configured to output a high-frequency signal to the power feeding resonator. The communicator is configured to receive load information from the power receiving apparatus. The load information includes information on at least a voltage between the voltage and a current of a load coupled to the power receiving apparatus. The controller is configured to perform, on the power supply, a control of the high-frequency signal on a basis of the load information received by the communicator, after starting of the output of the high-frequency signal by the power supply.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: March 31, 2020
    Assignee: DAIHEN Corporation
    Inventor: Daisuke Tsukiyama
  • Patent number: 10608477
    Abstract: A foreign object detection device for a coil device including a second coil to transmit power to a first coil wirelessly or receive power from the first coil wirelessly including: a foreign object detection coil configured to be located between the first coil and the second coil; and a cover configured to cover an upper portion of the foreign object detection coil, wherein a top surface of the cover includes at least one inclined surface inclined relative to a coil plane of the second coil, and the inclined surface is inclined downward from a low sensitivity region where detection sensitivity of the foreign object detection coil is relatively lower to a high sensitivity region where the detection sensitivity of the foreign object detection coil is relatively higher.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: March 31, 2020
    Assignee: IHI CORPORATION
    Inventors: Atsushi Asano, Kentarou Furiya, Jun Araki, Masahiko Goto
  • Patent number: 10608478
    Abstract: A power transmission system transmits electric energy to a secondary resonator having a secondary resonator coil through an electromagnetic field of a predetermined frequency from a resonator having a resonator coil and reduces noise using two noise cancellation resonators with one predetermined frequency and its higher harmonic component set as noise reduction target frequency.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: March 31, 2020
    Assignees: EQUOS RESEARCH CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Yamakawa, Kenichiro Sato, Shinji Ichikawa, Naoki Gorai
  • Patent number: 10608461
    Abstract: A wireless charging device comprises a transmitter coupled to at least one transmitting antenna and operable to cause the at least one transmitting antenna to emit electromagnetic radiation; a conductive structure adapted to confine the electromagnetic radiation to a charging zone; and a detector for detecting a degree of impedance mismatch between the transmitter and the at least one transmitting antenna. A receiver for use with the wireless charging device and a wireless charging system are also disclosed.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: March 31, 2020
    Assignee: Humavox Ltd.
    Inventor: Asaf Manova-Elssibony
  • Patent number: 10608476
    Abstract: A Wireless Electricity Distribution System (WEDS) and method is provided in the present invention. The apparatus includes a transmitter that transmits a microwave radiation beam towards a receiver. The transmitter includes a source of electricity, an electricity to microwave converter and a reflectarray antenna having a emitter horn and reflect aperture. The receiver includes a rectenna antenna providing a power conditioner. Alternatives include multiple beam transmitters, modular construction, intermediate relay redirectors, and simultaneous data over power transmissions.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: March 31, 2020
    Inventor: David R. Criswell
  • Patent number: 10596918
    Abstract: A power reception apparatus includes a secondary coil which receives electric power in a non-contact manner from a primary coil which is provided on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other, a drive part which can change a relative position on the plane of the secondary coil relative to the primary coil, a display unit, and a processing unit for processing an image to be displayed on the display unit. The processing unit calculates a relative position and a gradient of the secondary coil relative to the primary coil based on a coupling coefficient between the primary coil and the secondary coil, and a change with time in the coupling coefficient.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 24, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yusaku Amari