Electromagnet Or Highly Inductive Systems Patents (Class 307/104)
  • Patent number: 12034316
    Abstract: A power transmitting apparatus (100) performs foreign object detection processing based on data obtained by transmitting power to a plurality of power receiving apparatuses (204, 205) using a plurality of power transmission units.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: July 9, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Shichino
  • Patent number: 12032400
    Abstract: An adjustment system causes a target power supply device to execute first processing and second processing while causing at least one adjacent power supply device to perform a regular power supply operation. The first processing is processing for measuring a first voltage value while a power supply circuit of the target power supply device does not output an alternating current. The second processing is processing for measuring a second voltage value while the power supply circuit of the target power supply device outputs an alternating current. The adjustment system obtains a feeder circuit reactance of a feeder circuit based on the difference between the first voltage value and the second value, and executes adjustment processing for adjusting circuit characteristics with use of an adjustment unit in accordance with the obtained feeder circuit reactance in such a manner that the feeder circuit impedance is a predetermined impedance.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: July 9, 2024
    Assignee: Daifuku Co., Ltd.
    Inventors: Makoto Nunoya, Masaaki Yamamoto
  • Patent number: 12034317
    Abstract: A method for detecting a foreign object disposed in a charging area of a wireless power transmitter, the method including transmitting, by a wireless power receiver to the wireless power transmitter, a foreign object detection status packet including a mode bit field indicating whether the foreign object detection status packet includes a reference peak frequency of the wireless power receiver; and receiving, by the wireless power receiver from the wireless power transmitter, a response indicating the foreign object is present or not present in the charging area, wherein a data packet is used for information exchange between the wireless power transmitter and the wireless power receiver, wherein the reference peak frequency is pre-assigned to the wireless power receiver, wherein the response is determined based on a comparison of a measured peak frequency of a power signal transmitted by the wireless power transmitter and an adaptable threshold frequency adapted based on the reference peak frequency included
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: July 9, 2024
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jae Hee Park, Yong II Kwon
  • Patent number: 12034498
    Abstract: A wireless power-receiving device with near field communication function includes a communication antenna on a flat surface for near field communication, an interface circuit connected to the antenna and allowing a signal in the near field communication to pass, a wireless communication IC that is connected to the interface circuit and processes the signal, a receiving coil on the flat surface, a resonant capacitor included, with the receiving coil, in a receiving resonant circuit, and a rectifying/smoothing circuit connected to the receiving resonant circuit. The receiving resonant circuit resonates at a frequency for the near field communication, a resonance current flowing through the receiving resonant circuit causes a current to flow through the coil, a main flux is generated near the coil, and a magnetic path of the main flux is isolated from a magnetic path of a magnetic flux for the near field communication interlinking with the antenna.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: July 9, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuya Hosotani, Takahiro Nagai
  • Patent number: 12027873
    Abstract: An electronic device for inductive power transfer with a second electronic device is disclosed. The electronic device includes an inductive coil and a permanent magnet structure for creating a magnetic attachment between the electronic device and the second electronic device. The permanent magnet structure is positioned around an outer perimeter of the inductive coil to align the inductive coil with a second inductive coil in the second electronic device for inductive power transfer. The permanent magnet structure forms a ring that includes a gap and includes one or more arc-shaped permanent magnets. The permanent magnet structure is configured such that the electronic device can be rotated across a continuous range of rotational angles with respect to the second electronic device while keeping the alignment between the inductive coil and the second inductive coil during inductive power transfer.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: July 2, 2024
    Assignee: Mojo Mobility Inc.
    Inventors: Afshin Partovi, Michael Sears
  • Patent number: 12027888
    Abstract: Provided are a transmitting apparatus, a receiving apparatus, a power supply device, and a wireless charging method. The transmitting apparatus includes: a wireless transmitting circuit configured to transmit a wireless charging signal; and a communication control circuit configured to receive a first feedback signal from the receiving apparatus, and to transmit a second feedback signal to the power supply device based on the first feedback signal. The first feedback signal is a feedback signal corresponding to an output current of a wireless receiving circuit, and the second feedback signal is used to trigger the power supply device to adjust at least one of an output voltage and an output current of the power supply device.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: July 2, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Shiming Wan
  • Patent number: 12027876
    Abstract: Disclosed herein is a wireless medical device powering system configured to power an untethered medical device including a first medical device having an induction receiving coil, the induction receiving coil in communication with each of one or more electrical systems and a first medical device console comprising one or more processors, a non-transitory computer readable medium, and a plurality of logic modules. The system can include a wireless powering device configured to wirelessly provide power to the first medical device, the wireless powering device having a body including an induction transmitting coil.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: July 2, 2024
    Assignee: Bard Access Systems, Inc.
    Inventors: Steffan Sowards, William Robert McLaughlin, Anthony K. Misener
  • Patent number: 12027882
    Abstract: The present technology is directed to a system and method for implementing passive power harvesting from ambient electromagnetic emissions with a smart rectenna that incorporates automatic frequency response tuning features. The disclosed system incorporates a tunable High Pass Filter and voltage multiplier rectifier with a front-end ultra wide band antenna unit. The frequency response of tunable components can be actively adjusted to match the frequency band containing most of the energy in the incident electromagnetic emission. A look up table is used for determining the appropriate biasing levels of the tunable components for each frequency in a frequency band of interest. By tuning a frequency response of impedance matching, filtering and rectifying components to correspond to a frequency region of maximum power spectral density in the incident energy signal, the system facilitates the scavenging of ambient electromagnetic energy from the spectral region with the highest power spectral density.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: July 2, 2024
    Assignee: Cisco Technology, Inc.
    Inventor: Shanay Ravin Kothari
  • Patent number: 12027880
    Abstract: A system for wireless power transfer includes a wireless transmission system and a wireless receiver system. The wireless transmission system is operatively associated with a mouse pad includes a transmission antenna configured to transmit one or both of wireless power signals and wireless data signals within a large charge area, the large charge area having a length of in a range of 50 millimeters (mm) to 300 mm and a width in a range of 150 to 500 mm. The wireless receiver system is configured to power a load of a computer mouse and includes a receiver antenna, the receiver antenna including a plurality of receiver coils, each of the plurality of receiver coils configured to receive one or both of the wireless power signals and the wireless data signals within the large charge area.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: July 2, 2024
    Assignee: NuCurrent, Inc.
    Inventors: Andy Yoon, Alberto Peralta, Anna Oleksiewicz, Alireza Dayerizadeh, Michael Katz, Md. Nazmul Alam, Pratik Halyal
  • Patent number: 12027875
    Abstract: The present invention relates to a coil-based electromagnetic wave resonance transfer device for improving energy efficiency, which comprises: a housing; an electronic circuit board which is installed in the housing and senses an external signal generated outside the housing, to generate an electric wave signal having a specific waveform, of which a frequency is adjusted by using a multi-frequency modulation method; and a coil member which is installed in the housing and generates a resonant magnetic field through the electric wave signal output from the electronic circuit board to output an electromagnetic resonance wave to the outside of the housing.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: July 2, 2024
    Inventors: Young Jun Oh, Kyung Sun Na
  • Patent number: 12017548
    Abstract: A method for mounting an electromagnetic charging device on a substrate which can be driven on by an at least partially electric motor vehicle includes (a) laying a separating film on the substrate, (b) applying a flowable and hardenable casting material on the separating film, (c) arranging the electromagnetic charging device on the still flowable casting material, (d) aligning the charging device, and (e) (pre-)fixing the charging device with hardening of the casting material.
    Type: Grant
    Filed: October 2, 2021
    Date of Patent: June 25, 2024
    Assignee: Mahle International GmbH
    Inventors: Thomas Himmer, Christopher Laemmle, Holger Schroth
  • Patent number: 12021396
    Abstract: A power transmission apparatus configured to wirelessly transmit power to a power reception apparatus executes, when wirelessly transmitting power, detection processing for detecting an object different from the power reception apparatus, using a power loss, obtains, from the power reception apparatus, reference value information regarding a reference value of received power used to obtain the power loss, and performs a specific control after the power loss has been obtained and in a case where a predetermined time has elapsed since a predetermined timing associated with a timing at which information is obtained from the power reception apparatus, without obtaining the reference value information that is valid, the specific control being a control to prevent a power transmission output from being increased, regardless of received power in the power reception apparatus.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: June 25, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoki Hiramatsu
  • Patent number: 12015282
    Abstract: According to an embodiment, a wireless power transmitting device may include a transmission coil, a DC/DC converter configured to output a driving voltage, an inverter configured to output AC power to the transmission coil, and a controller. The controller may be configured to output a first control signal for generating the AC power having a first frequency to the inverter, measure a demodulated voltage generated by demodulating a signal applied to the transmission coil, and output, to the inverter, a second control signal for generating the AC power having a second frequency different from the first frequency, based on a first peak-to-peak value identified in the demodulated voltage being a preset first value or more. The inverter may output the AC power having the second frequency to the transmission coil based on the second control signal. Other various embodiments are possible as well.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: June 18, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mingi Song, Kyungmin Park, Changhak O
  • Patent number: 12013438
    Abstract: The technology relates to a capacity indicator for use with a battery. One aspect of the technology provides an improved activation circuit for a capacity indicator that is easier to use and less prone to false alarms. A further aspect of the technology provides an improved indicator which is able to indicate battery capacity without requiring the use of expensive battery labels such as thermochromic strip. A further aspect of the technology provides a capacity determination circuit which is housed within a battery and which is able to provide a more accurate indication of battery capacity.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: June 18, 2024
    Assignee: VOLT TECHNOLOGY LIMITED
    Inventor: Andrew James Wigney
  • Patent number: 12013455
    Abstract: An electronic device may include a processor and wireless circuitry with transmit and receive antennas. Radar circuitry may use the transmit and receive antennas to perform spatial ranging on external objects farther than a threshold distance (e.g., 1-2 cm) from the transmit antenna. The wireless circuitry may include a voltage standing wave ration (VSWR) sensor coupled to the transmit antenna to detect the presence of objects within the threshold distance from the transmit antenna. This may serve to cover a blind spot for the radar circuitry near to the transmit antenna. The VSWR sensor may gather background VSWR measurements when other wireless performance metric data for the wireless circuitry is within a predetermined range of satisfactory values. The background VSWR measurements may be subtracted from real time VSWR measurements to perform accurate and robust ultra-short range object detection near to the transmit antenna.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: June 18, 2024
    Assignee: Apple Inc.
    Inventors: Joonhoi Hur, Bernhard Sogl, Jochen Schrattenecker, Andreas Menkhoff, Bin Xiao, Lucas Calderin, Andre Hanke, Harald Pretl, Rastislav Vazny
  • Patent number: 12014857
    Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may convey wireless power to, from, or through the case while the device is coupled to the case. The device may have coplanar power transmitting and power receiving coils. The removable accessory may have an embedded switchable ferrimagnetic core and a coil that overlaps the switchable ferrimagnetic core. The switchable ferrimagnetic core may be operable in a first state where the switchable ferrimagnetic core is unsaturated. The switchable ferrimagnetic core may be operable in a second state where the switchable ferrimagnetic core is saturated by a magnetic field from a permanent magnet in a wireless power transmitting device. In the second state, the switchable ferrimagnetic core may have a lower magnetic permeability and higher magnetic reluctance than in the first state.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: June 18, 2024
    Assignee: Apple Inc.
    Inventors: Zaki Moussaoui, Zelin Xu, Matthew J. Chabalko, Nan Liu
  • Patent number: 12009677
    Abstract: In a power supply system for wirelessly supplying power between a power transmission device and a power reception device, the power transmission device includes a power transmission unit for generating supply power and transmitting the generated supply power to the power reception device; a power transmission side magnet for alignment with the power reception device; a magnetic sensor for detecting a magnetic force from a power reception side magnet provided in the power reception device; and a control unit for controlling the power transmission device. The power reception device includes: a power reception unit for receiving the supply power supplied from the power transmission device; the power reception side magnet for alignment with the power transmission device; and a control unit for controlling the power reception device.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 11, 2024
    Assignee: MAXELL, LTD.
    Inventors: Hitoshi Akiyama, Yoshinori Okada
  • Patent number: 12009737
    Abstract: An integrated circuit including a power supply including an AC input, an AC to DC rectifier, a DC output of the rectifier, a switch for shunting the AC input, and a controller including a first connection to the DC output, a second connection to the AC input, wherein the controller is configured to monitor the DC output, determine if the DC output is within a first threshold of a desired output, monitor instantaneous AC voltage across the AC input, determine if an absolute difference of the AC input from zero voltage is less than a second threshold, and if the DC output is within the first threshold and the absolute difference of the instantaneous AC input from zero voltage is less than the second threshold, then provide a command to the switch to shunt the AC input. Related apparatus and methods are also described.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: June 11, 2024
    Inventor: Nehemia Niv
  • Patent number: 12007799
    Abstract: Circuits and techniques are described that relate to an “energy operating system” for tracking available energy and energy consumption in a system or device to support a wide range of power management and related functionalities.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: June 11, 2024
    Assignee: Everactive, Inc.
    Inventors: James Boley, Christopher J. Lukas, Benton H. Calhoun, Farah B. Yahya
  • Patent number: 12009674
    Abstract: Efficient measures to improve electrical performance in a mobile side output circuitry of a wireless power transmission system are provided. The mobile side circuitry of the wireless power transmission system has a mobile side transformer stage comprising at least one primary side winding and a plurality of secondary side windings. To the plurality of secondary side windings there are connected a plurality of mobile side AC/DC converters. According to a first alternative of the present invention output terminal pairs of the plurality of mobile side AC/DC converters are connected in series. According to a second alternative of the present invention output terminal pairs of the plurality of mobile side AC/DC converters are connected in parallel.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: June 11, 2024
    Assignee: PULS GmbH
    Inventor: Nigel Springett
  • Patent number: 12009165
    Abstract: A switch for a medium or high voltage traction line testing device includes a plurality of normally-opened pairs of contacts connected in series, wherein each pair of contacts is equipped with a separate control coil. The switch further comprises a wireless power transfer supply module being on ground potential for supplying cascaded wireless power transfer receivers comprising the transmitting coil, high frequency inverter and microcontroller, a plurality of cascaded wireless power transfer receivers for supplying control coil of pairs of contacts. Each of the wireless power transfer receivers is referenced to the floating potential and comprises a receiving coil. Each of the control coils is connected to one of the wireless power transfer receivers. The receiving coils of the wireless power transfer receivers are magnetically coupled, and a wireless power transfer supply module is located in the middle of the cascaded wireless power transfer receivers.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: June 11, 2024
    Assignee: ABB Schweiz AG
    Inventors: Adam Ruszczyk, Krzysztof Koska, Piotr Oramus
  • Patent number: 12003114
    Abstract: Aspects of an efficient compensation network for reducing reactive power in a wireless power transfer (WPT) system are disclosed. The compensation network comprises a series/series (S/S) constant current (CC) source, a reactive power compensation capacitor, and a constant current (CC)-to-constant voltage (CV) network. In an example, the S/S CC source comprises a first capacitor connected in series with a first inductor on a primary side of a transformer and a second inductor on a secondary side of the transformer. The S/S CC source converts an input voltage signal of the WPT system into a constant alternating current (AC) current signal. In an example, the CC-to-CV network comprises at least a third capacitor and a third inductor. The CC-to-CV network converts the constant AC current signal into a constant AC voltage signal.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: June 4, 2024
    Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Keyao Sun, Jun Wang, Rolando Burgos, Dushan Boroyevich
  • Patent number: 12001620
    Abstract: A method comprises: determining whether an external wireless power (EWP) source is coupled to an interface configured to transfer power from the EWP source to the power management (PM) system; selecting the EWP to power the computer mouse when the EWP source is electrically couples and provides power to the interface; determining whether a fixed internal power source (PS) is coupled to the PM system; selecting a fixed internal PS to power the computer mouse when the fixed internal PS is coupled to the PM system and the EWP source is coupled to but not providing enough power to the interface; determining whether a removeable internal PS is electrically coupled to a PM system in the computer mouse; and selecting the removeable internal PS to power the computer mouse when the removeable internal PS is electrically coupled to the PM system and the EPS is not coupled to the interface.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: June 4, 2024
    Assignee: Logitech Europe S.A.
    Inventors: Laurent Plancherel, Thomas Marriott-Dodington
  • Patent number: 12003120
    Abstract: Devices, systems, and techniques are described to detect when a power transmitting and receiving system is in an inefficient position, which may cause a thermal response that less desirable than a more efficient position. The system may power transmitting device configured to wirelessly transfer electromagnetic energy to a power receiving device. Processing circuitry of the system may compute a target output power deliverable by the power transmitting device for a first duration and control the power transmitting device to output the target output power based in part on a heat limit. The processing circuitry may further calculate an energy transfer efficiency to the power receiving unit, update an adjustment factor based on the calculated energy transfer efficiency, and apply the adjustment factor to the heat limit for a subsequent duration.
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: June 4, 2024
    Assignee: Medtronic, Inc.
    Inventors: Andrew Thomas Fried, Douglas W. Brown, Charles M. Nowell, Robert J. Monson, Venkat R. Gaddam, Brett Otteson
  • Patent number: 11999248
    Abstract: An inductive power transfer pad for inductive power transfer to a vehicle includes a stationary part and a movable part. The movable part is movable between a retracted state and an extended state. The movable part includes a primary winding structure and at least one inverter that is electrically connected to the primary winding structure.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: June 4, 2024
    Assignee: ENRX IPT GmbH
    Inventors: Simon Wechsler, Christian Rapp
  • Patent number: 12002937
    Abstract: A vehicle includes a secondary battery, a power receiver, a charger, a heat generator, and a battery temperature raising unit. The power receiver receives an electromagnetic wave to generate electric power. The charger charges the secondary battery by using the electric power generated by the power receiver. The heat generator receives the electromagnetic wave to generate heat. The battery temperature raising unit raises temperature of the secondary battery by using the heat generator as a heat source. A part of a heat generation band, which is a frequency band of the electromagnetic wave in which the heat generator has an increased heat generation efficiency, does not overlap a power generation band, which is a frequency band of the electromagnetic wave in which the power receiver has an increased power generation efficiency, and a part of the power generation band does not overlap the heat generation band.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: June 4, 2024
    Assignee: SUBARU CORPORATION
    Inventor: Isao Nakagawa
  • Patent number: 12003116
    Abstract: A dual wireless power transfer system is disclosed having an input power supply providing power at a first voltage V1 and a first wireless power transmission system receiving power at a first power input from the input power supply, the first wireless power transmission system including a first transmitter antenna and a first driver for driving the first transmitter antenna for wireless power transmission to a first wireless receiver system and wireless receipt of data from the first receiver system, wherein data wirelessly received at the first transmitter antenna from the first receiver system at least partially feeds back onto the first power input. A second wireless power transmission system includes a second transmitter antenna and a second driver for driving the second transmitter antenna for wireless power transmission to a second wireless receiver system.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: June 4, 2024
    Assignee: NuCurrent, Inc.
    Inventors: Unnati Wadkar, Marc Backas, Pavel Shostak, Glenn Riese
  • Patent number: 12003117
    Abstract: A system for wireless power transfer includes a plurality of transfer elements, each transfer element of the plurality of transfer elements being configured as a transmitter for the wireless power transfer or a receiver for the wireless power transfer, a plurality of sensors, each sensor of the plurality of sensors being positioned relative to the plurality of transfer elements and configured to generate sensor data indicative of a field implementing the wireless power transfer, and a processor coupled to the plurality of sensors and configured to determine an estimate of a terminal variable level in a respective transfer element of the plurality of transfer elements based on the sensor data, and to determine whether a foreign object is affecting the wireless power transfer based on whether the estimated terminal variable level is different from another assessment of the terminal variable level by more than a threshold.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: June 4, 2024
    Assignee: The Regents of the University of Michigan
    Inventors: Al-Thaddeus Avestruz, Sung Yul Chu
  • Patent number: 11995499
    Abstract: An IC card communicates with a reader/writer, which is inductive read/write communication equipment, in a non-contact manner. The IC card includes a proximity detection circuit that detects a proximity state to the reader/writer, a near-field communication circuit, an electronic function circuit, an electricity storage device, and a power supply control circuit. The power supply control circuit controls, based on a detection result of the proximity detection circuit, power supply from the electricity storage device to the electronic function circuit. The IC card manages and controls presence/absence and timing of power supply from the electricity storage device to the electronic function circuit and effectively controls discharging of the electricity storage device and charging of the electricity storage device.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: May 28, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takahiro Nagai, Tatsuya Hosotani
  • Patent number: 11996705
    Abstract: A wireless power transmitter according to one embodiment of the present disclosure comprises a primary coil forming magnetic coupling with a secondary coil provided in a wireless power receiver and transmitting wireless power to the wireless power receiver, wherein the primary coil is formed by spirally winding a plurality of subcoils connected electrically in parallel while keeping the subcoils in contact with each other, and the subcoil is litz wire consisting of several conducting wires packed in a bundle.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: May 28, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyunghwan Kim, Jihyun Lee, Bongsik Kwak, Yongcheol Park
  • Patent number: 11996707
    Abstract: A wireless power transfer system can include an electronic device including a first wireless power transfer coil and wireless power transfer circuitry coupled to the wireless power transfer coil. The wireless power transfer circuitry can be capable of receiving power and transmitting power wirelessly via the first wireless power transfer coil. The system can further include an accessory device including a second wireless power transfer coil, a rectifier coupled to the second wireless power transfer coil, and an energy storage device coupled to the rectifier by a regulator circuit. The wireless power transfer circuitry can operate in a pulsed or burst wireless power transfer mode to deliver power to the accessory device.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: May 28, 2024
    Assignee: Apple Inc.
    Inventors: Lixin Shi, Zaki Moussaoui, Weihong Qiu, Zelin Xu, Matthew J Chabalko
  • Patent number: 11996703
    Abstract: A wireless device includes a power transmission coil configured to transmit power wirelessly, a power reception coil configured to receive the power wirelessly, a switch circuit configured to apply a voltage to the power transmission coil based on a first switching signal, and a rectification circuit configured to rectify a voltage output from the power reception coil based on a second switching signal and apply the rectified voltage to a load, wherein the switch circuit and the rectification circuit each include a plurality of bidirectional switches.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 28, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuki Shoji
  • Patent number: 11996702
    Abstract: Resonator control techniques for wireless power transmitting units are described. One or more novel parameters may be defined for use in conjunction with dominant PRU selection on the part of a PTU. In various embodiments, each of a plurality of PRUs may determine values for one or more such parameters, and may report those values to the PTU. In some embodiments, the PTU may identify a parameter to be used as a selection criterion, and may identify the dominant PRU based on the respective values reported for that parameter by the plurality of PRUs. Other embodiments are described and claimed.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 28, 2024
    Assignee: INTEL CORPORATION
    Inventors: Hooman Shirani-Mehr, Ahmad Khoshnevis
  • Patent number: 11990770
    Abstract: Systems, methods, and apparatuses for receiving wireless power using a wireless power receiver client architecture are disclosed. A simplified wireless power receiver apparatus includes an energy storage device and a radio frequency (RF) transceiver including an antenna. Energy harvester circuitry is coupled to the energy storage device and the RF transceiver, and control circuitry is coupled to the energy storage device, the RF transceiver, and the energy harvester. The control circuitry causes the RF transceiver to: establish a connection with a wireless power transmitter (WPT), transmit a beacon signal to the WPT, and receive a wireless power signal from the WPT. The control circuitry causes the energy harvester to deliver at least a portion of energy of the wireless power signal to the energy storage device for storage therein. In some embodiments, a single antenna is utilized both for transmitting the beacon signal and for receiving the wireless power signal.
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: May 21, 2024
    Assignee: Ossia Inc.
    Inventors: Hatem Ibrahim Zeine, Douglas Wayne Williams, James J. Wojcik
  • Patent number: 11990768
    Abstract: Disclosed is an annular resonator including a conductor formed on a surface of an annular shaped structure and having a first end and a second end opposite to the first end, and a capacitor having a first end and a second end opposite to the first end, wherein a radius of curvature of a first side facing a center portion of the annular shaped structure is smaller than a radius of curvature of a second side facing an outer periphery of the annular shaped structure, and wherein the first end and the second end of the conductor are electrically connected to the first end and the second end of the capacitor, respectively.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: May 21, 2024
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jaehyun Park, Beomwoo Gu, Jaeseok Park, Hyunseok Shin, Sungku Yeo, Youngho Ryu, Chongmin Lee
  • Patent number: 11990847
    Abstract: A circuit and methods describing a complementary metal-oxide semiconductor (CMOS) rectifier for use in radio frequency (RF) energy harvesting with body biasing by the RF input to control the threshold voltage of each transistor. The CMOS rectifier includes an energy harvesting antenna, and multiple rectifier stages. The antenna receives electromagnetic radiation from the environment and generates a DC current. The oscillating input current is an RF+ positive current during a first half cycle and is an RF? negative current during a second half cycle. A first rectifier stage includes a first capacitor connected to the RF+ positive current, a second capacitor connected to the RF? negative current and a cross coupled CMOS circuit connected to the antenna.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: May 21, 2024
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventor: Munir A. Al-Absi
  • Patent number: 11990897
    Abstract: Provided is a current control device capable of continuing feedback control for a solenoid in normal feedback control while preventing occurrence of an unintended valve operation due to flow of a reverse current.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: May 21, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yasuo Shima, Keishi Komoriyama, Yoichiro Kobayashi
  • Patent number: 11979051
    Abstract: Wireless charging methods, a device to-be-charged (230), a power supply device (210), and a storage medium are provided. A wireless charging method is applicable to a device to-be-charged (230). The device to-be-charged (230) includes a wireless power receiving circuit. The method include the following. During wireless charging, an output current of the wireless power receiving circuit and a charging voltage of a battery and/or a charging current of the battery are detected (101). A target charging power is determined according to the charging voltage and/or the charging current of the battery, and a target charging current is determined according to the output current of the wireless power receiving circuit (102). An adjustment request is sent to a power supply device, where the adjustment request carries the target charging power and/or the target charging current (103). An adjusted wireless charging signal is received from a wireless charging apparatus.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: May 7, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Shiming Wan
  • Patent number: 11979036
    Abstract: A system and method for sensorless coil detection that exploits a dead-time effect in a WPT inverter as an indicator of presence of a receiver. In one embodiment, a system described herein may be configured to detect arrival of a moving receiver prior to alignment of the moving receiver with the transmitter for power transmission.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: May 7, 2024
    Assignee: UT-Battelle, LLC
    Inventors: Utkarsh D. Kavimandan, Veda P. Galigekere, Burak Ozpineci
  • Patent number: 11975621
    Abstract: The present disclosure relates to the field of EV-DWPT (electric vehicle dynamic wireless power transfer), and specifically discloses a double solenoid EV-DWPT system and a parameter optimization method thereof. The system is provided with a magnetic coupling mechanism, comprising a transmitting structure and a receiving structure. The transmitting structure includes a plurality of double solenoid transmitting rails arranged equidistantly along a road direction. Each double solenoid transmitting rail includes a square tubular magnetic core perpendicular to the road surface, and transmitting solenoids wound spirally using one and the same Litz wire wound in opposite directions.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: May 7, 2024
    Inventors: Xiaorui Wu, Yue Sun, Xiaofei Li, Jing Xiao, Shaonan Chen, Yue Zuo, Yuhong Mo, Ning Wu, Wenlan Gong, Shuai Han, Weidong Chen, Min Guo, Xiaoxuan Guo, Chunsen Tang
  • Patent number: 11979027
    Abstract: A control method. The control method includes determining whether a second electronic device is placed on a touch panel of a first electronic device, the touch panel including a first electrode layer, the second electronic device including a second electrode layer, the second electrode layer being configured to form a charging capacitor unit with the first electrode layer; controlling the first electrode layer and the second electrode layer opposite to the first electrode layer to form the charging capacitor unit when it is determined that the second electronic device is placed on the touch panel; and controlling a first power module of the first electronic device to provide power to the first electrode layer to supply power to the second electronic device through the charging capacitor unit; or, controlling the first power module to receive power transmitted by the second electronic device through the charging capacitor unit.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: May 7, 2024
    Assignee: LENOVO (BEIJING) LIMITED
    Inventors: Qihua Xiao, Zhijian Mo
  • Patent number: 11975666
    Abstract: A seat device for a vehicle includes: a support member detachably attached to a floor of the vehicle; an occupant seat movably supported by the support member and provided with an electrical component; and a wireless power supply mechanism configured to supply electric power to the electrical component. The wireless power supply mechanism includes a power transmitting unit attached to the floor, and a power receiving unit attached to the support member so as to face the power transmitting unit and configured to receive the electric power wirelessly from the power transmitting unit.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: May 7, 2024
    Assignee: TS TECH CO., LTD.
    Inventors: Chase Hemmelgarn, Steven Johnson
  • Patent number: 11975620
    Abstract: A power transfer system for supplying electric power to a battery of an electric vehicle including a control architecture capable of controlling the transmission of electric power to a battery of the electric vehicle and, at the same time, capable of providing frequency control functionalities to optimize power transmission efficiency. In a further aspect, the invention relates to a method for controlling a power transfer system.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 7, 2024
    Assignee: ABB E-Mobility B.V.
    Inventors: Fabio Tombelli, Pawel Blaszczyk, Marco Lega, Oscar Apeldoorn
  • Patent number: 11970068
    Abstract: A base station for a power transmission system the base station including a generator for generating power having a duty ratio and frequency, a circuit having a coil, a measuring device for measuring real power and/or apparent power in the circuit, and a control device, wherein the circuit is connected to the generator and the measuring device, wherein the control device is connected to the measuring device and the generator, wherein the control device is configured to keep the duty ratio constant while varying the frequency from a starting frequency, use the measuring device to measure the real power and/or the apparent power while varying the frequency, keep the frequency constant and vary the duty ratio when a real power limit value and/or apparent power limit value is/are exceeded, and exclude a combination of values for the frequency and the duty ratio when varying the frequency and/or the duty ratio.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: April 30, 2024
    Assignee: BRUSA Elektronik AG
    Inventors: Lukas Böhler, Marc Bosch
  • Patent number: 11964583
    Abstract: A computer can execute instructions to: receive power-receiving vehicle data identifying a power-receiving vehicle; identify one or more power-supplying vehicles for providing charging to the power-receiving vehicle; determine a rank for each of the identified one or more power-supplying vehicles based on the received power-receiving vehicle data and data received from the one or more power-supplying vehicles; upon selecting one of the one or more power-supplying vehicles, provide a navigation instruction to navigate at least one of the power-receiving vehicle and the selected power-supplying vehicle to a charging location based on a power-receiving vehicle location and a selected power-supplying vehicle location; and send access data to the power-receiving vehicle to access a charge port of the selected power-supplying vehicle; send a first light actuation instruction to the power-supplying vehicle based on a charging status; and send a second light actuation instruction to the power-receiving vehicle based
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: April 23, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Stuart C. Salter, David Kennedy, Annette Lynn Huebner, Peter Phung
  • Patent number: 11968004
    Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The devices in the wireless power system may communicate using in-band communication. The wireless power transmitting device may transmit data to the wireless power receiving device using frequency-shift keying (FSK) modulation. The wireless power receiving device may transmit data to the wireless power transmitting device using amplitude-shift keying (ASK) modulation. While transmitting data to the wireless power receiving device using FSK modulation, the wireless power transmitting device may monitor for ASK modulation from the wireless power receiving device. In response to detecting the ASK modulation from the wireless power receiving device, the wireless power transmitting device may abort the FSK data transmission and process the detected ASK modulation to receive data from the wireless power receiving device.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: April 23, 2024
    Assignee: Apple Inc.
    Inventors: Jeffrey D. Louis, Zaid A. AbuKhalaf
  • Patent number: 11967821
    Abstract: A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of independent units responsive to a broadcast controller. Each independent unit includes at least one commander and at least one energy controller for controlling at least one of the electrical loads in response to a control signal received from the commander. The independent units are configured and operate independent of each other. The broadcast controller transmits wireless signals to the energy controllers of the independent units. The energy controllers do not respond to control signals received from the commanders of other independent units, but the energy controllers of both independent units respond to the wireless signals transmitted by broadcast controller. The energy controller may operate in different operating modes in response to the wireless signals transmitted by the broadcast controller.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: April 23, 2024
    Assignee: Lutron Technology Company LLC
    Inventors: Walter S. Zaharchuk, Timothy S. Majewski, Christopher Buck, Daniel Vander Valk, John H. Bull, Joel S. Spira
  • Patent number: 11967836
    Abstract: Metal object detection may be performed in a wireless power system by monitoring the 5th or other order harmonic current of a dual-frequency power transmitter driven by a voltage-fed inverter with square-wave output. While power transfer is maintained by tuning at the fundamental frequency, the transmitter circuit is tuned simultaneously at the 5th order frequency or other harmonic frequencies to increase or decrease the flow of the harmonic current for when a metal object is present. The receiver circuit may include a notch filter to filter out the 5th order frequency. With the dual-frequency tuning configuration, the presence of a metal object causes a significant drop of the increase in the harmonic current at the transmitter side while the receiver behaves as an open circuit with no effect on power transfer. The harmonic tuning circuit may be switched off as necessary to leave only the fundamental frequency for power transfer.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: April 23, 2024
    Assignee: Apple Inc.
    Inventors: Aiguo Patrick Hu, Bo Long, Qi Zhu, Wynand Malan, Patrin Illenberger, Andrew R Connell
  • Patent number: 11968816
    Abstract: A magnetic field shielding sheet according to one embodiment is a magnetic field shielding sheet for an antenna that includes a hollow portion formed in a central region and having a predetermined area and a pattern portion surrounding the hollow portion. The magnetic field shielding sheet includes a sheet body formed as a multi-layer sheet in which a plurality of sheets are stacked in multiple layers with adhesive layers therebetween, wherein the sheet body is a multi-layer sheet in which the plurality of sheets having a relatively lower magnetic permeability while having a relatively higher surface resistance along a stacking direction are sequentially stacked.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: April 23, 2024
    Assignee: AMOSENSE CO., LTD.
    Inventor: Kil Jae Jang
  • Patent number: 11962182
    Abstract: An embodiment of the present disclosure discloses a wireless charging device comprising a wireless receiving module, a controller, a first charging module, and a second charging module. The wireless receiving module is configured to receive a wireless charging signal in response to the wireless charging device being in a wireless sensing area, transmit a state indication signal to the controller, receive a charging indication signal from the controller, and determine whether to transmit the wireless charging signal to the first charging module according to the charging indication signal.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 16, 2024
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Zhiqiang Chen, Yuanjing Li, Xianghao Wu, Yongning Chen