Electromagnet Or Highly Inductive Systems Patents (Class 307/104)
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Patent number: 11476718Abstract: A wireless transmission system for transmitting AC wireless signals includes a transmission controller configured to provide first driving signals for driving the first transmission antenna. The wireless transmission system further includes a power conditioning system configured to receive the driving signals, receive input power from an input power source, and generate the AC wireless signals based, at least in part, on the first driving signal and the input power source. The wireless transmission system further includes a first transmission antenna configured for coupling with one or more other antennas and configured to transmit the AC wireless signals to the one or more other antennas, receive the AC wireless signals from one or more other antennas, and repeat the AC wireless signals to the one or more other antennas.Type: GrantFiled: July 24, 2020Date of Patent: October 18, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Md. Nazmul Alam
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Patent number: 11476711Abstract: A power transmitter for wireless power transfer at an operating frequency selected from a range of about 87 kilohertz (kHz) to about 360 kHz is disclosed. The power transmitter includes a control and communications unit and an inverter circuit configured to receive input power and convert the input power to a power signal. The power transmitter further includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer. The power transmitter further includes a shielding comprising a magnetic backing and a magnetic wall, the magnetic wall and magnetic backing defining a cavity, the magnetic wall including a top surface, the cavity extending, at least, from the magnetic backing to the coil, the coil positioned proximate to the top surface.Type: GrantFiled: December 23, 2020Date of Patent: October 18, 2022Assignee: NuCurrent, Inc.Inventor: Md Nazmul Alam
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Patent number: 11476710Abstract: An electronic device according to an embodiment may include: a wireless charging coil; a power transmission circuit configured to be electrically connected to the wireless charging coil; a wireless communication circuit configured to communicate with an external electronic device; and a control circuit. The control circuit may be configured to: transmit power to an external electronic device; obtain data corresponding to power received by the external electronic device in response to the transmitted power using the wireless communication circuit; obtain power loss based on the obtained data; stop transmitting the power to the external electronic device when the power loss exceeds a first threshold; and stop transmitting the power to the external electronic device according to whether an event related the power loss occurs even when the power loss is lower than the first threshold.Type: GrantFiled: July 15, 2020Date of Patent: October 18, 2022Assignee: Samsung Electronics CO., LTD.Inventors: Mincheol Ha, Kwangseob Kim, Kihyun Kim, Dongzo Kim, Jihye Kim, Yunjeong Noh, Changhak O, Kyungmin Lee, Hyungkoo Chung
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Patent number: 11476725Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a transmission integrated circuit which includes a damping circuit and a transmitter controller, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of the wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.Type: GrantFiled: August 19, 2021Date of Patent: October 18, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Pavel Shostak
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Patent number: 11476719Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.Type: GrantFiled: November 12, 2019Date of Patent: October 18, 2022Assignee: Apple Inc.Inventors: Jerald Polestico Guillermo, Previn D. Nair, Mikhal S. De Jesus, Antoin J. Russell
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Patent number: 11476898Abstract: A wireless power transmission system includes a transmitter antenna, a transmission controller, an amplifier, and a variable resistor. The transmission controller is configured to (i) provide a driving signal for driving the transmitter antenna based on an operating frequency for the wireless power transfer system and (ii) perform one or more of encoding the wireless data signals, decoding the wireless data signals, receiving the wireless data signals, or transmitting the wireless data signals. The variable resistor is in electrical connection with the transmitter antenna and configured to alter a quality factor (Q) of the transmitter antenna, wherein alterations in the Q by the variable resistor change an operating mode of the wireless power transmission system.Type: GrantFiled: January 28, 2021Date of Patent: October 18, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Jason Luzinski, Dennis Kapolnek
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Patent number: 11469618Abstract: Described herein is a wireless charging system including switched capacitor (SC) rectifiers with output regulation. The load for the receiver on mobile devices using wireless charging is a battery. Regulation is needed for battery charging applications, e.g. constant voltage charging, constant current charging, and pulsed charging. For this purpose, the wireless power transfer (WPT) receiver can possess some “intelligence” to monitor the output voltage/current, adjust the behavior of the electronic circuitries and achieve a closed-loop control. Because a multilevel switched-capacitor (MSC) rectifier has output control ability, this can allow the MSC rectifier to directly charge the battery without an additional DC/DC charger on-board the device.Type: GrantFiled: October 19, 2020Date of Patent: October 11, 2022Assignees: Futurewei Technologies, Inc., University of Tennessee Research FoundationInventors: Chongwen Zhao, Daniel Costinett, Songnan Yang
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Patent number: 11469625Abstract: An electronic device for wirelessly transmitting power includes a first coil assembly; a second coil assembly; and a processor configured to control to generate a first magnetic field by applying first current to the first coil assembly; obtain a plurality of first sensing values of the first magnetic field sensed by a plurality of coils included in the second coil assembly; and identify whether a foreign material exists in a power transmission area of the electronic device based on the plurality of first sensing values.Type: GrantFiled: November 18, 2020Date of Patent: October 11, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kangho Byun, Seogyong Jeong, Jaehyun Park, Jihyun Yang
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Patent number: 11469614Abstract: A small size, energy harvesting, long distance wireless AC sensor module. The sensor module includes an electromagnetic energy harvesting method that supplies and manages power to the sensor. Therefore, the sensor module does not rely on wired power or battery to run. The sensor also includes a low power wireless transmitter that has transmission frequency of sub-1 GHz and effective transfer distance of more than 100 meters, more than 150 meters, more than 200 meters and up to 250 meters. It has small size preferably having a size of less than 68 mm long by 33 mm wide by 21 mm thick, less than 50 grams. Thanks to the wireless and energy harvesting features, the sensor is very easy to install. Users just need to clamp sensors to the subject electrical lines, and then the data will be sent to data gateways automatically.Type: GrantFiled: January 9, 2022Date of Patent: October 11, 2022Assignee: Archimedes Controls Corp.Inventors: Wenli Yu, Liangcai Tan
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Patent number: 11469615Abstract: A device for wireless charging of portable electronic devices is provided. The device is capable of being fixed to a piece of furniture and includes a charger configured to transmit electricity via induction; a horizontal arm of an angular shelf beneath which the charger is mounted; and an angular bracket configured to mount the device to the piece of furniture by adjusting a spacing between a vertical arm of the angular bracket and a vertical arm of the angular shelf to approximately a width of the piece of furniture, wherein the charger is mounted between the angular bracket and the angular shelf, and wherein the angular bracket is slidably mounted in relation to the vertical arm of the angular shelf.Type: GrantFiled: December 22, 2021Date of Patent: October 11, 2022Assignee: WBTEC, LLCInventors: Wieslaw Bober, Kamil Sienkiel, Dominik Stanislaw Sienkiel
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Patent number: 11463179Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.Type: GrantFiled: May 25, 2021Date of Patent: October 4, 2022Assignee: ENERGOUS CORPORATIONInventor: Amir Sarajedini
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Patent number: 11462941Abstract: An enclosure for charging an item of smart clothing comprising a plurality of battery-powered sensors is disclosed herein. The enclosure comprises a cavity for receiving the item of smart clothing, a charging interface configured to deliver an electromagnetic field into the cavity to charge the plurality of battery-powered sensors, a wireless communications interface for transmitting and receiving data to and from the plurality of sensors, and a processor configured to control operation of the charging interface and the communications interface.Type: GrantFiled: March 28, 2019Date of Patent: October 4, 2022Assignee: 270 VISION LTDInventor: Martin Gossling
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Patent number: 11462952Abstract: A power transmitter is configured for transmission of wireless power, to a wireless receiver, at extended ranges, including a separation gap greater than 8 millimeters (mm). The power transmitter includes a control and communications unit and an inverter circuit configured to receive input power and convert the input power to a power signal. The power transmitter further includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a bottom face. The power transmitter further includes a shielding comprising a ferrite core and a magnetic backing, the magnetic backing configured to substantially back the bottom face of the coil.Type: GrantFiled: December 23, 2020Date of Patent: October 4, 2022Assignee: NuCurrent, Inc.Inventor: Md Nazmul Alam
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Patent number: 11462948Abstract: A wireless power transmission apparatus includes patch antennas which form an RF wave; a memory storing electromagnetic wave distribution maps corresponding to transmission conditions for transmitting the RF wave; and a processor configured to determine a position of an electronic device and a position of a living body, determine a transmission condition which transmits the RF wave which causes an electromagnetic wave having a size not exceeding a first threshold value to be applied to a position of the living body while being beam-formed at a position of the electronic device, using at least a portion of the electromagnetic wave distribution maps, and generate the RF wave with the determined transmission condition using the patch antennas, each electromagnetic wave distribution map indicating the size of electromagnetic waves at one or more points around the wireless power transmission apparatus when the RF wave is formed by each of the transmission conditions.Type: GrantFiled: October 19, 2018Date of Patent: October 4, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-Seok Park, Chong-Min Lee, Sung-Ku Yeo, Jae-Hyuck Shin, Young-Ho Ryu
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Method for distinguishing metal objects from heating cup and wireless charging device using the same
Patent number: 11462951Abstract: A method for distinguishing metal objects from a heating cup and a wireless charging device using the method are disclosed. The wireless charging device includes a housing, a power unit, a power transmitter, a current measuring unit, a Q factor measuring unit, a controller, and a temperature detector. The wireless charging device can distinguish metal objects from a heating cup by both current in the power transmitter and the Q factor of the power transmitter. If the heating cup is confirmed, a higher power will be provided to a metal heating layer of the heating cup to heat the liquid in the heating cup; otherwise, a lower power will be provided to charge general electronic devices having a power receiving element.Type: GrantFiled: August 18, 2021Date of Patent: October 4, 2022Inventor: Peter Kao -
Patent number: 11456625Abstract: According to certain embodiments, a power transmission device comprises an induction circuit configured to transmit a wireless power signal through a charging pad and receive a signal from an external device; and at least one processor operatively connected to the induction circuit, wherein the processor is configured to: enter a wireless charging protection mode for wireless charging of the external device, measure a current value of the wireless power signal, and release the wireless charging protection mode when the packet information is not included in the signal transmitted from the external device and the measured current value or variation of the current value exceeds a threshold value.Type: GrantFiled: July 23, 2020Date of Patent: September 27, 2022Assignee: Samsung Electronics Co., LtdInventors: Kwangseob Kim, Changhak O, Kihyun Kim, Dongzo Kim, Jihye Kim, Yunjeong Noh, Kyungmin Lee, Hyungkoo Chung, Mincheol Ha
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Patent number: 11456779Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a damping circuit, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of amplitude shift keying (ASK) wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.Type: GrantFiled: January 28, 2021Date of Patent: September 27, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Pavel Shostak
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Patent number: 11456614Abstract: A wireless power reception device can include a first shielding member; a second shielding member; a short-range communication coil on the first shielding member; a wireless charging coil on the second shielding member; and a hole outside the wireless charging coil, in which the hole penetrates through the first shielding member.Type: GrantFiled: April 10, 2020Date of Patent: September 27, 2022Assignee: Scramoge Technology LimitedInventors: Jeong Wook An, Hyoung Rae Kim, Dong Hyuk Lee
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Patent number: 11451092Abstract: An assembly line includes a conveyor belt and an energy charging system. The energy charging system includes (i) a resonator having a TX resonator disposed along the conveyor belt and a RX resonator mounted on and transported by the conveyor belt, (ii) an impedance matching network in communication with the resonator, (iii) and an energy storage device in communication with at least one of the resonator and the impedance matching network. Vmin is a minimum voltage of the energy storage device, and Vcap is a voltage across the energy storage device measured in real time. Energy is transferred from the TX resonator to the RX resonator when the Vcap is less than Vmin of the energy storage device.Type: GrantFiled: August 29, 2018Date of Patent: September 20, 2022Assignee: Robert Bosch GmbHInventors: Xingyi Shi, Huang Lee, Vivek Jain
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Patent number: 11451089Abstract: A charger for charging a device to be inductively charged is described, comprising an excitation coil made of an electrical conductor wound around a toroidal core to excite a magnetic field inside the toroidal core, the toroidal core having an air-gap between two end-faces of the toroidal core, wherein the two end-faces are facing each other, and the winding density of the excitation coil along the toroidal length of the toroidal core is higher in the vicinity of the respective end-faces as compared to the remaining parts of the toroidal core.Type: GrantFiled: May 9, 2019Date of Patent: September 20, 2022Assignee: Oticon A/SInventors: Alessandro De Masi, Lars Pinnerup Frederiksen, Jens Troelsen, Lars Riemer
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Patent number: 11451266Abstract: A method for operating a wireless power transmission system includes providing a driving signal for driving a transmission antenna of the wireless power transmission system, the driving signal based, at least, on an operating frequency for the wireless power transmission system. The method further includes inverting, by the at least one transistor, a direct current (DC) input power signal to generate an AC wireless signal at the operating frequency, based on provided driving signals. The method includes receiving, at a damping circuit, damping signals configured for switching the damping transistor to one of an active mode and an inactive mode to control signal damping, wherein the damping signals switch to the active mode periodically. The method further includes selectively damping, by the damping circuit, the AC wireless signals, during transmission of the wireless data signals if the damping signals set the damping circuit to the active mode.Type: GrantFiled: January 28, 2021Date of Patent: September 20, 2022Assignee: NuCurrent, Inc.Inventors: Dennis Kapolnek, Alberto Peralta, Jason Luzinski
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Patent number: 11451098Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a damping circuit, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of the wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.Type: GrantFiled: May 10, 2021Date of Patent: September 20, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Pavel Shostak
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Patent number: 11451158Abstract: An electronic interface device between an electromagnetic energy harvesting stage provided with an inductance and a load stage, the electronic interface device being provided to allow tending the charge seen by the harvesting stage towards an optimal charge and thus being able to extract a maximum of energy from this energy harvesting stage.Type: GrantFiled: January 15, 2020Date of Patent: September 20, 2022Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Antony Quelen
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Patent number: 11441331Abstract: Disclosed is a wireless power supply smart door lock, comprising: a wireless power transmission control device mounted on a door frame; the wireless power transmission control device comprises a first main control unit and a wireless power transmission coil, a first wireless power conversion unit, a first communication unit and a door body state detecting unit electrically connected to the first main control unit; the wireless power receiving control device comprises a second main control unit and a wireless power receiving coil, a second wireless power conversion unit, an energy storage unit and a second communication unit electrically connected to the second main control unit; the first main control unit detects the acquired door opening or closing state information and the energy storage unit electric quantity information obtained by the communication interaction in real time according to the door body state detecting unit, and determines whether to trigger the wireless power transmission coil to transmitType: GrantFiled: October 25, 2017Date of Patent: September 13, 2022Inventor: Pingchuan Li
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Patent number: 11444661Abstract: A wireless power transmission system includes a transmitter antenna, transmission controller, and an amplifier. The transmitter controller is configured to provide a driving signal for driving the transmitter antenna based on, at least, an operating mode for transmission of AC wireless signals and determine the operating mode for transmission of the AC wireless signals, wherein the operating mode includes a power level for the wireless power signals and a data rate for the wireless data signals, the power level chosen from a series of available power levels and the data rate chosen from a series of available data rates, each of the series of available power levels corresponding to one of the series of available data rates, wherein corresponding pairs of available power levels and available data rates are inversely related.Type: GrantFiled: January 28, 2021Date of Patent: September 13, 2022Assignee: NuCurrent, Inc.Inventors: Dennis Kapolnek, Alberto Peralta, Jason Luzinski
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Patent number: 11440205Abstract: A robot joint module and a wireless power supply apparatus, system, and method therefor. The apparatus includes: a wireless power receiver arranged at a connecting end of a current robot joint module and adapted to receive electrical power from a previous robot joint module of the current robot joint module; and a wireless power transmitter arranged at an output end of the current robot joint module and adapted to transmit the electrical power to a next robot joint module of the current robot joint module. By receiving electrical power from a previous robot joint module in a wireless power supply mode and sending the electrical power to a next robot joint module in a wireless power supply mode, the electrical power can be transferred between a plurality of robot joint modules, without arranging any power cable.Type: GrantFiled: September 29, 2018Date of Patent: September 13, 2022Assignee: Rethink Robotics GMBHInventors: Sheng Zhang, Ji Long Yao
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Patent number: 11437855Abstract: A wireless power transfer (“WPT”) pad apparatus includes a first winding adjacent to the ferrite structure, where the first winding is arranged in a spiral-type pattern, and a second winding adjacent to the ferrite structure. The second winding is arranged in a spiral-type pattern and the second winding wound interleaved to the first winding. The first and second windings are arranged to compensate for a difference in length between the first winding and the second winding for portions of the first and second windings wound adjacent to each other.Type: GrantFiled: September 28, 2020Date of Patent: September 6, 2022Assignee: WIRELESS ADVANCED VEHICLE ELECTRIFICATION, LLCInventors: Patrice Lethellier, Marcellus Harper
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Patent number: 11437862Abstract: A wireless transmitter with Q-factor measurement is presented. In some embodiments, a method of performing a measurement test in a wireless power transmitter includes adjusting an input voltage to a bridge circuit; setting up transistors in the wireless power transmitter to form an LC oscillating circuit that includes a transmit coil and a capacitor circuit; measuring a VDET sinusoidal voltage from the LC oscillating circuit; and determining a result from the VDET sinusoidal voltage. The result can be calculation of a Q-factor and/or determination of presence of a foreign object.Type: GrantFiled: September 2, 2020Date of Patent: September 6, 2022Assignee: RENESAS ELECTRONICS AMERICA INC.Inventor: Chenggang Deng
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Patent number: 11437856Abstract: A power transmitter for wireless power transfer at an operating frequency selected from a range of about 87 kilohertz (kHz) to about 360 kHz is disclosed. The power transmitter includes a control and communications unit and an inverter circuit configured to receive input power and convert the input power to a power signal. The power transmitter further includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer. The power transmitter further includes a shielding comprising a magnetic backing and a magnetic wall, the magnetic wall and magnetic backing defining a cavity, the magnetic wall including a top surface, the cavity extending, at least, from the magnetic backing to the coil, the coil positioned proximate to the top surface.Type: GrantFiled: December 23, 2020Date of Patent: September 6, 2022Assignee: NuCurrent, Inc.Inventor: Md Nazmul Alam
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Patent number: 11438030Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a damping circuit, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of the wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.Type: GrantFiled: January 28, 2021Date of Patent: September 6, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Pavel Shostak
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Patent number: 11437864Abstract: Disclosed in the present specification is a wireless power reception device comprising: a power pickup unit for receiving wireless power from a wireless power transmission device by means of magnetic coupling with the wireless power transmission device and transforming, into a direct current signal, an alternating current signal generated by wireless power; a communication/control unit for receiving the direct current signal from the power pickup unit, transmitting, to the wireless power transmission device, a first power transmission suspension packet for temporarily suspending transmission of the wireless power in order to detect a foreign object, and performing a foreign object detection procedure within a predetermined time window when the transmission of the wireless power is temporarily suspended; and a load for receiving the direct current signal from the power pickup unit.Type: GrantFiled: August 6, 2019Date of Patent: September 6, 2022Assignee: LG ELECTRONICS INC.Inventors: Kyunghwan Kim, Gyunghwan Yook, Yongcheol Park, Jinmoo Park
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Patent number: 11437870Abstract: Wireless power transfer systems, disclosed, include one or more circuits to facilitate high power transfer at high frequencies. Such wireless power transfer systems include a transmission integrated circuit which includes a damping circuit and a transmitter controller, configured to dampen a wireless power signal such that communications fidelity is upheld at high power. The damping circuit includes at least a damping transistor that is configured to receive, from the transmitter controller, a damping signal for switching the transistor to control damping during transmission of the wireless data signals. Utilizing such systems enables wireless power transfer at high frequency, such as 13.56 MHz, at voltages over 1 Watt, while maintaining fidelity of in-band communications associated with the higher power wireless power signal.Type: GrantFiled: August 19, 2021Date of Patent: September 6, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Pavel Shostak
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Patent number: 11438031Abstract: A wireless power transmission system includes a transmitter antenna, a transmission controller, an amplifier, and a variable resistor. The transmission controller is configured to (i) provide a driving signal for driving the transmitter antenna based on an operating frequency for the wireless power transfer system and (ii) perform one or more of encoding the wireless data signals, decoding the wireless data signals, receiving the wireless data signals, or transmitting the wireless data signals. The variable resistor is in electrical connection with the transmitter antenna and configured to alter a quality factor (Q) of the transmitter antenna, wherein alterations in the Q by the variable resistor change an operating mode of the wireless power transmission system.Type: GrantFiled: January 28, 2021Date of Patent: September 6, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Jason Luzinski, Dennis Kapolnek
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Patent number: 11427095Abstract: A wireless charging system for electric vehicles includes an AC-to-DC converter connectable to an electric AC grid; a DC-to-AC converter interconnected with the AC-to-DC converter; a first inductive coil interconnected with the DC-to-AC converter and for inductively coupling to a second inductive coil for power transfer via an air gap; a first housing, in which the AC-to-DC converter is arranged; a second housing, in which the DC-to-AC converter and the inductive coil are arranged; and a cable for interconnecting the AC-to-DC converter and the DC-to-AC converter outside of the first housing and second housing.Type: GrantFiled: January 27, 2020Date of Patent: August 30, 2022Assignee: ABB SCHWEIZ AGInventor: Fabio Tombelli
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Patent number: 11431206Abstract: An electronic device includes a coil, and at least one control circuit electrically connected to the coil. The control circuit is configured to transmit power to an external device via the coil by using a first frequency belonging to a first frequency band, receive a packet related with wireless charging from the external device via the coil, in response to having failed to receive the packet within a first reference time, change at least one of an amplitude of the power transmitted or the first frequency used for the transmitting of the power, and to transmit power to the external device via the coil on the basis of the at least one of the changed transmit power or the changed frequency.Type: GrantFiled: February 10, 2021Date of Patent: August 30, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Mincheol Ha, Dongzo Kim, Hyungkoo Chung
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Patent number: 11431202Abstract: A wireless transmission system for transmitting AC wireless signals includes a transmission controller configured to provide first driving signals for driving the first transmission antenna. The wireless transmission system further includes a power conditioning system configured to receive the driving signals, receive input power from an input power source, and generate the AC wireless signals based, at least in part, on the first driving signal and the input power source. The wireless transmission system further includes a first transmission antenna configured for coupling with one or more other antennas and configured to transmit the AC wireless signals to the one or more other antennas, receive the AC wireless signals from one or more other antennas, and repeat the AC wireless signals to the one or more other antennas.Type: GrantFiled: July 24, 2020Date of Patent: August 30, 2022Assignee: NuCurrent, Inc.Inventors: Alberto Peralta, Md. Nazmul Alam
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Patent number: 11428725Abstract: A wireless power initiated test system can use an aircraft controller to automatically initiate a test sequence to determine status of systems of the aircraft, based on the detection of receipt of the wireless power at the aircraft. The detection of receipt of the wireless power at the aircraft can be based on the detection at a voltage regulator of the aircraft which is receiving the wireless power from a wireless power receiver of the aircraft. The system may also power the aircraft controller during the test sequence using the wireless power received. Such a system may quickly and efficiently initiate, power and perform a pre-flight test sequence to determine statuses of systems of the aircraft, such as during a competition or race of the aircraft. The system may apply to drones, as well as of other types of aircraft.Type: GrantFiled: September 19, 2017Date of Patent: August 30, 2022Assignee: Performance Drone Works LLCInventors: Phil Herlihy, Nate Ferris, Trevor Smith, Ryan Gury, Nicholas Horbaczewski
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Patent number: 11424647Abstract: A power transmitter (101) for a wireless power transfer system comprises a transmitter coil (103) and a driver (201) generates a drive signal for the transmitter coil (103) employing a repeating time frame with a power transfer time interval and a foreign object detection time interval. A test generator (211) generates a test drive signal for a test coil (209) during the foreign object detection time interval. A foreign object detector (207) performs a foreign object detection test based on a measured parameter for the test drive signal. Prior to entering a power transfer phase, an adapter (213) controls the power transmitter (101) to operate in a foreign object detection initialization mode in which a preferred value of a signal parameter for the test drive signal is determined in response to at least a first message received from the power receiver (105). During the foreign object detection time interval the signal parameter of is set to the preferred value.Type: GrantFiled: May 13, 2021Date of Patent: August 23, 2022Assignee: Koninklijke Philips N.V.Inventors: Andries Van Wageningen, Wilhelmus Gerardus Maria Ettes, Eddy Gerrit Veltman, Antonius Adriaan Maria Staring, Richard Henricus Maria Theelen, Johannes Gerardus Fredericus Kablau
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Patent number: 11422281Abstract: A foreign matter detecting device includes a plurality of detection coils disposed so as to be capable of being electromagnetically coupled to each other between a transmission coil of a power transmission device and a reception coil of a power reception device between which power is transmitted in a non-contact manner, a plurality of capacitors each forming a resonance circuit together with each of the plurality of detection coils, a power supply circuit supplying AC power having a predetermined frequency to an input coil that is one of the plurality of detection coils, and a detection circuit detecting a voltage of AC power transmitted via the plurality of detection coils from an output coil that one of the plurality of detection coils and is different from the input coil, and detecting foreign matter entrapped between the transmission coil and the reception coil according to the voltage detected.Type: GrantFiled: July 22, 2020Date of Patent: August 23, 2022Assignee: OMRON CORPORATIONInventors: Goro Nakao, Takanori Imazawa
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Patent number: 11422646Abstract: A mouse pad device is provided. The mouse pad device includes a mouse pad main body, a control module, a first electrical connection circuit and a second electrical connection circuit. The control module is disposed on a first area of a first side of the mouse pad main body. The first electrical connection circuit is electrically connected to the second electrical connection circuit on a second side of the mouse pad main body. The first side of the mouse pad main body and the second side of the mouse pad main body are opposite sides. The first electrical connection circuit and the second electrical connection circuit are each laid along a periphery of a third area of the second side of the mouse pad main body.Type: GrantFiled: May 18, 2021Date of Patent: August 23, 2022Assignee: DEXIN CORPORATIONInventors: Ho-Lung Lu, Pai-Yang Chou
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Patent number: 11424645Abstract: A wireless power transfer system includes a power receiver (105) receiving a power transfer from a power transmitter (101) via a wireless inductive power transfer signal. The power transmitter (101) comprises a transmit power coil (103) generating the power transfer signal. A test signal coil (209) coupled to a test signal generator (211) generates a magnetic test signal. A plurality of spatially distributed detection coils (213) is coupled to measurement unit (215) generating a set of measurement values reflecting signals induced in the detection coils (213) by the magnetic test signal. A processor (217) determines a measurement spatial distribution of the measurement value where the spatial distribution reflects positions of the detection coils (213). A foreign object detector (219) detects a presence of a foreign object in response to a comparison of the measurement spatial distribution to a reference spatial distribution.Type: GrantFiled: May 2, 2017Date of Patent: August 23, 2022Assignee: Koninklijke Philips N.V.Inventors: Andries Van Wageningen, Antonius Adriaan Maria Staring, Wilhelmus Gerardus Maria Ettes, Petrus Carolus Maria Frissen, Aditya Mehendale, Willem Potze
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Patent number: 11418069Abstract: A method for operating a wireless power transfer system includes selecting an operating mode from a plurality of transmission modes, which includes, at least, a first operating mode having a first power level and a first data rate and a second operating mode having a second power level and a second power rate, wherein the first data rate is greater than the second data rate and the first power level is less than the second power level. The method further includes performing, one or more of encoding the wireless data signals, decoding the wireless data signals, receiving the wireless data signals, transmitting the wireless data signals or combinations thereof. The method further includes driving a transmitter antenna of the wireless power transmission system, by the amplifier, based on a driving signal generated in accordance with the selected operating m.Type: GrantFiled: January 28, 2021Date of Patent: August 16, 2022Assignee: NuCurrent, Inc.Inventors: Jason Luzinski, Alberto Peralta
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Patent number: 11418068Abstract: A power transmitter is configured for transmission of wireless power, to a wireless receiver, at extended ranges, including a separation gap greater than 8 millimeters (mm). The power transmitter includes a control and communications unit and an inverter circuit configured to receive input power and convert the input power to a power signal. The power transmitter further includes a coil configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a bottom face. The power transmitter further includes a shielding comprising a ferrite core and a magnetic backing, the magnetic backing configured to substantially back the bottom face of the coil.Type: GrantFiled: December 23, 2020Date of Patent: August 16, 2022Assignee: NuCurrent, Inc.Inventor: Md Nazmul Alam
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Patent number: 11418060Abstract: Systems, methods and apparatus for wireless charging are disclosed. A charging device has a resonant circuit comprising one or more transmitting coils, a driver circuit configured to provide a charging current to the resonant circuit, a zero-crossing detector configured to provide a zero-crossing signal that includes edges corresponding to transitions of a voltage measured across the resonant circuit through a zero volt level or corresponding to transitions of a current in the resonant circuit through a zero ampere level and a controller. The controller may be configured to cause the driver circuit to provide the charging current to the resonant circuit when a receiving device is present on a surface of the charging device, and control a level of power that is wirelessly transferred to the receiving device by phase-aligning the charging current with a phase-modulation signal generated from the zero-crossing signal.Type: GrantFiled: June 4, 2020Date of Patent: August 16, 2022Assignee: AIRA, INC.Inventors: Eric Heindel Goodchild, James Scott, Ashish Verma
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Patent number: 11418266Abstract: A power over fiber system includes a power sourcing equipment, a powered device, an extender, and first and second optical fiber cables. The power sourcing equipment outputs feed light. The extender extends a laser wavelength of the feed light. The first optical fiber cable transmits the feed light from the power sourcing equipment to the extender. The second optical fiber cable transmits the feed light from the extender to the powered device. Based on a loss-to-transmission-length characteristic of the laser wavelength before extended by the extender and a loss-to-transmission-length characteristic of the laser wavelength after extended by the extender, the first optical fiber cable has a length that is equal to or shorter than a transmission length where a loss due to the laser wavelength before extended by the extender is equal to a loss due to the laser wavelength after extended by the extender.Type: GrantFiled: June 29, 2020Date of Patent: August 16, 2022Assignee: KYOCERA CORPORATIONInventors: Takahiro Kobayashi, Shuichi Tamate
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Patent number: 11411442Abstract: A wireless power transmitter includes a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform transmission or reception of data, wherein the communication/control unit is further configured to receive, from the wireless power receiver, a received power packet (RPP) which informs a value of the wireless power received by the wireless power receiver, transmit a bit pattern to the wireless power receiver in response to the RPP, the bit pattern requesting attention from the wireless power receiver the wireless power transmitter, receive, from the wireless power receiver, a response packet to poll the reason of the attention, and transmit, to the wireless power receiver, a capability packet including information for a new target power level.Type: GrantFiled: March 1, 2021Date of Patent: August 9, 2022Assignee: LG ELECTRONICS INC.Inventor: Yongcheol Park
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Patent number: 11411441Abstract: A wireless-power receiver includes an antenna coupled to a rectifier, and a depletion-mode switch coupled to the rectifier. The depletion-mode switch can create an impedance mismatch or an impedance match between the rectifier and the antenna. While the depletion-mode switch is in a default-closed state, it creates an impedance mismatch between the rectifier and the antenna. A first amount of alternating current received by the antenna as radio frequency (RF) signals is reflected away from the rectifier's input due to the impedance mismatch. A second amount of the alternating current causes the depletion-mode switch to begin transitioning to an open state, creating an impedance match between the rectifier and the antenna. While the depletion-mode switch is in the open state, creating an impedance match between the rectifier and the antenna, alternating current received by the antenna flows through the rectifier's input to be converted into direct current.Type: GrantFiled: September 19, 2020Date of Patent: August 9, 2022Assignee: ENERGOUS CORPORATIONInventor: Wayne Eumchan Woo
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Patent number: 11411438Abstract: According to various embodiments, provided is a wireless power transmission device comprising a plurality of power transmission antennas, a geomagnetic sensor, a processor, and a communications circuit, wherein the processor is configured to: set a coordinate system on the basis of geomagnetic sensing information from the geomagnetic sensor; control such that, for charging an electronic device, a first RF wave is formed under a first transmission condition through the plurality of power transmission antennas; receive, from the electronic device and through the communications circuit, first information on a change in the position or location, or both, of the electronic device; at least on the basis of the first information, confirm the position or location, or both, of the electronic device in the coordinate system after the change of the electronic device; and control such that a second RF wave is formed under a second transmission condition through the plurality of power transmission antennas, wherein the seType: GrantFiled: August 19, 2019Date of Patent: August 9, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyungwoo Lee, Gongbo Moon, Sungkweon Park
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Patent number: 11411439Abstract: A system for providing wireless power transfer includes a primary antenna having a primary lens surrounding the primary antenna and a secondary antenna having a secondary lens surrounding the secondary antenna. The secondary antenna is operatively connected to power at least one sensor. A mains power source is operatively connected to power the primary antenna. The primary and secondary antennas are separated a distance apart to wirelessly transfer power from the primary antenna to the secondary antenna.Type: GrantFiled: August 12, 2015Date of Patent: August 9, 2022Assignee: UTC Fire & Security CorporationInventors: Christopher C. Fuller, Edward Goff
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Patent number: 11405873Abstract: The present invention relates to a device and a method for performing authentication in a wireless power transmission system. Disclosed in the present specification is an authentication method in a wireless power transmission system, comprising the steps of: receiving, from a target device, a first packet including indication information related to whether the target device supports an authentication function; transmitting an authentication request message to the target device if the target device supports the authentication function; receiving, from the target device, an authentication response message including a certificate for wireless charging in response to the authentication request message; and confirming the authentication of the target device on the basis of the authentication response message.Type: GrantFiled: May 2, 2018Date of Patent: August 2, 2022Assignee: LG ELECTRONICS INC.Inventors: Yongcheol Park, Jaeyeol Kim, Joonho Park, Jeongkyo Seo, Gyunghwan Yook, Jaesung Lee