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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5986. Отображено 100.
01-03-2012 дата публикации

Method and apparatus of tracking of resonant impedance in resonance power transfer system

Номер: US20120049861A1
Автор: Eun Seok Park, Nam Yun Kim, Sang Wook KWON, Young Ho Ryu, Young Tack Hong
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A resonance power transfer system and a method for tracking resonant impedance in the resonance power transfer system are provided. An apparatus for tracking resonant impedance in a resonance power transfer system may include: a load sensor configured to detect the impedance of a load connected to a target device that receives resonance power; a target reflection signal detector configured to detect a reflection signal corresponding to the resonance power; a target impedance tracking unit configured to track the resonant impedance by adjusting a determination factor of a resonant frequency; and a target control unit configured to control the tracking of the resonant impedance based on whether there is a change of the impedance of the load, the reflection signal is detected, or both.

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Номер записи: 1
29-03-2012 дата публикации

Robot power source charging station

Номер: US20120074891A1
Автор: Alex D. Foessel, Andrew Joseph Valentine, Noel Wayne Anderson
Принадлежит: Deere and Co

Embodiments of the invention are directed to a system for recharging a mobile robot as a power source. In one embodiment the system comprises a power transmission link having a first end positioned at a selectively located charging station and a second end connected to the battery carried by the robot, the transmission link being configured to transmit power from its first end to its second end to charge the battery. The system further comprises a first wireless power transmitter coupled to receive power from a specified power source, and a first wireless power receiver, connected to the first end of the transmission link and located at a prespecified distance from the first wireless power transmitter. The first wireless power receiver is configured to receive power transmitted across the prespecified distance from the first wireless power transmitter, and to provide power to the first end of the transmission link, for transmission to charge the battery.

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Номер записи: 2
19-04-2012 дата публикации

Wireless powered television

Номер: US20120091795A1
Автор: Andrew J. Campanella, Eric R. Giler, Katherine L. Hall, Konrad Kulikowski, Morris P. Kesler, Ron Fiorello
Принадлежит: WiTricity Corp

A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.

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Номер записи: 3
19-04-2012 дата публикации

Wireless power transfer within a circuit breaker

Номер: US20120091820A1
Автор: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Eric R. Giler, Katherine L. Hall, Konrad Kulikowski, Marin Soljacic, Morris P. Kesler, QIANG LI
Принадлежит: WiTricity Corp

A wireless power service panel source includes power and control circuitry that receives power from a wired power connection at a position in a service panel, and generates an electronic drive signal at a frequency, f, and a source magnetic resonator configured to generate an oscillating magnetic field in response to the electronic drive signal, wherein the source magnetic resonator is configured to wirelessly transmit power to sensors in other positions within the service panel.

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Номер записи: 4
05-07-2012 дата публикации

Resonant system for wireless power transmission to multiple receivers

Номер: US20120169137A1
Автор: Ahmad R.S. BAHAI, Ali Djabbari, Ali Kiaei, Gerard G. Socci, Gianpaolo Lisi, Jeffrey A. MORRONI
Принадлежит: National Semiconductor Corp

In a wireless power transfer system with multiple receivers, receiver management may be necessary to effectively provide power to the multiple receivers. In one implementation, receiver management includes sweeping or stepping the transmitter resonant and/or operating frequency. In another implementation, receiver management includes receiver self-management, in which the receiver load current duty cycle is controlled to maintain receiver voltage even in the presence of multiple receivers. In another implementation, receiver management includes receiver self-management, in which one or more receivers use a time-sharing heuristic to identify when other receivers are charging and wait to begin receiving a transfer of power until another receiver has stopped receiving a transfer of power.

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Номер записи: 5
20-09-2012 дата публикации

Wireless energy transfer with variable size resonators for medical applications

Номер: US20120235634A1
Автор: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Konrad Kulikowski, Marin Soljacic, Morris P. Kesler, Volkan Efe
Принадлежит: WiTricity Corp

A medical device-powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver includes a load configured to power an implantable medical device using electrical power, and a second electromagnetic resonator adapted to be housed within the medical device and configured to be coupled to the load, wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator, the area circumscribed by the inductive element of at least one of the electromagnetic resonators can be varied to improve performance.

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Номер записи: 6
27-09-2012 дата публикации

Multi-resonator wireless energy transfer for appliances

Номер: US20120242159A1
Автор: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, David A. Schatz, Eric R. Giler, Herbert Toby Lou, Katherine L. Hall, Konrad Kulikowski, Marin Soljacic, Morris P. Kesler, Ron Fiorello
Принадлежит: WiTricity Corp

A mobile wireless receiver for use with a first electromagnetic resonator coupled to a power supply and a second electromagnetic resonator coupled to at least one of a power supply and the first electromagnetic resonator. The mobile wireless receiver includes a load associated with electrically powering an appliance, and a third electromagnetic resonator configured to be coupled to the load and movable relative to at least one of the first electromagnetic resonator and the second electromagnetic resonator, wherein the third resonator is configured to be wirelessly coupled to at least one of the first electromagnetic resonator and the second electromagnetic resonator to provide resonant, non-radiative wireless power to the third electromagnetic resonator from at least one of the first electromagnetic resonator and the second electromagnetic resonator.

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Номер записи: 7
27-09-2012 дата публикации

Method for controlling power in wireless power transmission assembly and wireless power assembly thereof

Номер: US20120242276A1
Автор: Chun-Kil Jung, Yoon-Sang Kuk
Принадлежит: Hanrim Postech Co Ltd

A power control method for a wireless power transmission assembly, and the wireless power transmission assembly. The method includes: outputting a direct current voltage to a wireless power transmission apparatus, the direct current voltage generated from an alternating current power source in an adaptor; and changing the level of the direct current voltage in the adaptor based on a voltage change communication signal if the wireless power transmission apparatus transmits the voltage change communication signal to the adaptor.

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Номер записи: 8
11-10-2012 дата публикации

Tunable wireless energy transfer for medical applications

Номер: US20120256494A1
Автор: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Marin Soljacic, Morris P. Kesler
Принадлежит: WiTricity Corp

A mobile wireless receiver for use with a first electromagnetic resonator coupled to a power supply includes a load associated with powering an electrically powered medical device, and a second electromagnetic resonator configured to be coupled to the load and moveable relative to the first electromagnetic resonator, wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator, and wherein the second electromagnetic resonator is configured to be tunable during system operation so as to at least one of tune the power provided to the second electromagnetic resonator and tune the power delivered to the load.

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Номер записи: 9
22-11-2012 дата публикации

Power transmitting and receiving apparatus and method for performing a wireless multi-power transmission

Номер: US20120293011A1
Автор: Kang-Ho Byun, Kyung-Woo Lee, Se-Ho Park, Sung-Ku Yeo, Young-Min Lee, Yu-Su Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and method are provided for transmitting and receiving power for wireless power transmission. A power transmitting apparatus includes a power supplier for generating power; a resonator for transmitting the power generated by the power supplier to a plurality of power receiving apparatuses; and a controller for determining whether a power transmission to a new power receiving apparatus is possible using a power receiving apparatus management table, when the new power receiving apparatus is detected while the power transmissions of the plurality of power receiving apparatuses are being performed, and controlling the resonator to transmit power to the new power receiving apparatus, when the power transmission to the new receiving apparatus is possible. The power transmitting apparatus stably supplies power to a plurality of power receiving apparatuses by determining power transmission states of the plurality of power receiving apparatuses.

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Номер записи: 10
22-11-2012 дата публикации

Wireless charging apparatus and method

Номер: US20120293119A1
Автор: Se-Ho Park, Sung-Bum Park, Young-Min Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

Methods and apparatus for wireless charging are provided. Transmission power transmitted from a wireless power transmitter is received at a power receiver of a wireless power receiver. A battery of the wireless power receiver is charged with the received transmission power. It is determined whether the battery is fully charged. A packet from a communication unit of the wireless power receiver is transmitted to the wireless power transmitter when the battery is fully charged. An auxiliary charge of the battery is performed by receiving strength-reduced transmission power from the wireless power transmitter.

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Номер записи: 11
27-12-2012 дата публикации

Wireless Power Transmission

Номер: US20120326660A1
Автор: Mingyu Lu, Richard E. Billo
Принадлежит: University of Texas System

A system for wireless power transmission may include one or more charging panels and one or more powered devices. The charging panel may include a pilot analysis circuitry, processor and power transmitter. The pilot analysis circuitry may be configured to analyze the magnitude and phase of a pilot signal from the powered device, based on which the processor may be configured to determine a complex conjugate of the pilot signal. And the power transmitter may be configured to cause radiation of a focused wireless power beam to the powered device in accordance with the complex conjugate of the pilot signal and via one or more antenna elements. The charging panel may be one of a plurality of spatially-distributed charging panels each of which includes respective antenna elements that may form an array of antenna elements configured to collaboratively radiate wireless power as a distributed, retro-reflective beamformer.

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Номер записи: 12
10-01-2013 дата публикации

Battery charger cradle

Номер: US20130009596A1
Автор: Eiji Satsuma, Kyozo Terao, Shoichi Toya, Yasunari Mizoguchi
Принадлежит: Eiji Satsuma, Kyozo Terao, Shoichi Toya, Yasunari Mizoguchi

In a battery charger cradle, a battery incorporated in a battery built-in device is charged by electric power induced to an induction coil. The cradle includes a primary coil for inducing electromotive force to the induction coil, a casing having a top plate atop of which the battery built-in device is placed, a movement mechanism for moving the primary coil along an inner surface of the top plate, and a position detection controller for detecting a position of the battery built-in device placed on the top plate and controlling the movement mechanism to bring the primary coil closer to the induction coil in the battery built-in device. When the battery built-in device is placed on the top plate, the position detection controller detects the position of the battery built-in device, and the movement mechanism moves the primary coil closer to the induction coil in the battery built-in device.

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Номер записи: 13
07-03-2013 дата публикации

Contactless battery charger, electronic device, battery pack, and contactless charging system

Номер: US20130057206A1
Автор: Hiroyuki Oku, Hiroyuki Takahashi, Masanori Oshimi
Принадлежит: Panasonic Corp

A contactless charging system is made up of an electronic device and a contactless charger 200 that recharges the electronic device in a contactless manner. The electronic device transmits a full charge command indicating completion of charge. Upon receipt of the full charge command, the contactless charger shifts to a charge stop state in which charge of the electronic device is not performed. In the charge stop state, the contactless charger generates a load check signal for checking whether or not the electronic device is placed in the contactless charger in a rechargeable state, and transmits the signal. Further, the contactless charger also generates a charge restart check command for checking whether or not the electronic device requests recharge in a charge stop state, and transmits the command.

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Номер записи: 14
18-04-2013 дата публикации

Apparatus, system, and method for detecting a foreign object in an inductive wireless power transfer system

Номер: US20130094598A1
Автор: Siamak Bastami
Принадлежит: Integrated Device Technology Inc

An inductive wireless power transfer system comprises a transmitter configured to generate an electromagnetic field to a coupling region in response to an input signal. The inductive wireless power transfer control logic is configured to determine an input power of the input signal. The control logic is configured to determine a presence of a foreign object within the coupling region in response to a comparison of the input power and an output power of an output signal of a receiver within the coupling region. Related inductive wireless power transfer systems and methods for detecting a foreign object in an inductive wireless power transfer coupling region of an inductive wireless power transfer system are disclosed.

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Номер записи: 15
20-06-2013 дата публикации

Method and apparatus for transmitting wireless power

Номер: US20130154558A1
Автор: Kang-Ho Byun, Kyung-Woo Lee, Se-Ho Park
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and apparatus are provided for transmitting wireless power in a wireless power network managed by a wireless power transmitter. The method includes transmitting first charging power to a first wireless power receiver; detecting a second wireless power receiver; and transmitting second charging power to the second wireless power receiver.

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Номер записи: 16
11-07-2013 дата публикации

Detecting device, detecting system, power transmitting device, noncontact power transmission system, and detecting method

Номер: US20130176023A1
Автор: Shinji Komiyama
Принадлежит: Sony Corp

A detecting device includes a reading coil configured to read a magnetic flux generated by a detecting coil for detecting a magnetic field of an electromagnetic wave output from an exciting coil according to the magnetic field. The detecting device further includes a Q-value measuring section configured to measure a Q-value of the detecting coil on a basis of a temporal transition of oscillation of a voltage obtained in the reading coil according to the magnetic flux generated by the detecting coil.

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Номер записи: 17
08-08-2013 дата публикации

Electronic apparatus, control method and recording medium

Номер: US20130200843A1
Автор: Akihiro Tanabe
Принадлежит: Canon Inc

An electronic apparatus includes a power receiving unit that receives power from a power transmitting apparatus wirelessly, a connection unit that connects an external apparatus, a detection unit that detects power received by the power receiving unit, and a control unit that changes a mode of the electronic apparatus to a first mode after the detection unit detects that power received by the power receiving unit is equal to or lower than a predetermined value if the electronic apparatus is in a second mode.

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Номер записи: 18
19-09-2013 дата публикации

Foreign matter sensing device and non-contact electric-power transfer system

Номер: US20130241476A1
Автор: Hiroki Okada, Takayoshi Honda
Принадлежит: Denso Corp

A foreign matter sensing device includes a first determiner that determines whether there is a foreign matter in a foreign matter detection range based on an image imaged by an imaging portion, and a second determiner that determines whether there is a foreign matter in the foreign matter detection range based on a temperature sensed by a temperature sensor. The second determiner executes determining whether there is a foreign matter in the foreign matter detection range while electric-power is transferred between a vehicle-side coil and an out-of-vehicle coil, when the first determiner determines that there is no foreign matter after the imaging portion images the image of the foreign matter detection range in response to a start demand instructing to start transferring electric-power.

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Номер записи: 19
03-10-2013 дата публикации

Apparatus, system, and method for detecting a foreign object in an inductive wireless power transfer system via coupling coefficient measurement

Номер: US20130257165A1
Автор: Manjit Singh
Принадлежит: Integrated Device Technology Inc

An inductive wireless power device comprises a transmitter configured to generate an electromagnetic field to a coupling region for wireless power transfer to a receiver, and control logic configured to determine a coupling coefficient of the wireless power transfer when the receiver is within the coupling region. The control logic also determines a presence of a foreign object within the coupling region responsive to a comparison of the determined coupling coefficient and an expected coupling coefficient for the wireless power transfer. An inductive wireless power device comprises a receiver configured to couple with an electromagnetic field in a coupling region for inductive wireless power transfer from a transmitter. The receiver is configured to alter a wireless power transfer characteristic of the transmitter for a determination of a presence of a foreign object within the coupling region responsive to a determination of a coupling coefficient of the wireless power transfer.

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Номер записи: 20
24-10-2013 дата публикации

Wireless energy transfer using variable size resonators and system monitoring

Номер: US20130278073A1
Автор: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Konrad J. Kulikowski, Marin Soljacic, Morris P. Kesler
Принадлежит: WiTricity Corp

A variable shape magnetic resonator includes an array of at least two resonators each being of a substantially different shapes and at least one power and control circuit configured to selectively connect to and energize at least one of the resonators.

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Номер записи: 21
07-11-2013 дата публикации

Detection device, power reception device, power transmission device and non-contact power supply system

Номер: US20130293026A1
Автор: Hiroaki Nakano, Takashi Miyamoto, Tomomichi MURAKAMI
Принадлежит: Sony Corp

A detection device, including: one or a plurality of magnetic coupling elements configured to have one or a plurality of coils; and a detection unit that measures or calculates an effective resistance values of the magnetic coupling elements or an effective resistance value of a circuit including at least the magnetic coupling elements and determines a presence or absence of a foreign substance based on a change in the effective resistance value.

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Номер записи: 22
12-12-2013 дата публикации

Charging apparatus

Номер: US20130328411A1
Автор: Akihiro Tanabe
Принадлежит: Canon Inc

A charging apparatus includes: a charging unit configured to perform a contactless charging operation for a placed external device; a detector configured to detect a position of a placed object; a determining unit configured to determine that the placed object is an external device compatible with the charging unit; and a control unit configured to control the charging unit such that, during the contactless charging operation for an external device compatible with the charging unit, the charging operation for the external device being charged is restricted when an object that is determined by the determining unit not to be an external device compatible with the charging unit, has been placed within a predetermined distance from the charging unit.

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Номер записи: 23
16-01-2014 дата публикации

Wireless power transmitter, wireless power receiver, and methods of controlling the same

Номер: US20140015335A1
Автор: Hae-Young Jun, Hee-Won Jung, Hyuk-Choon Kwon, Joon-Il KIM, Kang-Ho Byun, Kyung-Woo Lee, Se-Ho Park
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A wireless power transmitter, a wireless power receiver, and methods of controlling the same are provided. A method of detecting a rogue device other than a wireless power receiver in the wireless power transmitter includes receiving power consumption information about the wireless power receiver from the wireless power receiver, calculating a power loss based on the received power consumption information about the wireless power receiver, determining whether the power loss exceeds a threshold, and controlling transmission power of the wireless power transmitter, determining that a rogue device exists on the wireless power transmitter, if the power loss exceeds the threshold.

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Номер записи: 24
23-01-2014 дата публикации

Vehicle charging system

Номер: US20140021914A1
Автор: Douglas Raymond Martin, William David Treharne
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A vehicle is provided comprising a battery, a charge plate electrically connected to the battery, and a thermal sensor configured to output a signal indicative of a sensed temperature. The thermal sensor can be positioned to determine temperature in the area proximate to the charge plate. The vehicle further includes at least one controller configured to (a) cause an association signal to be repeatedly transmitted during a battery charge procedure such that charging of the battery via the charge plate is maintained, and (b) in response to the sensed temperature exceeding a primary threshold, cause the repeated transmission of the association signal to be interrupted such that charging of the battery ceases.

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Номер записи: 25
13-03-2014 дата публикации

Adaptive impedance tuning in wireless power transmission

Номер: US20140070621A9
Автор: Charles E. Wheatley, Ernest T. Ozaki, Stanley S. Toncich, William H. Von Novak
Принадлежит: Qualcomm Inc

Exemplary embodiments are directed to wireless power. A wireless power receiver includes a receive antenna for coupling with near field radiation in a coupling-mode region generated by a transmit antenna operating at a resonant frequency. The receive antenna generates an RF signal when coupled to the near filed radiation and a rectifier converts the RF signal to a DC input signal. A direct current (DC)-to-DC converter coupled to the DC input signal generates a DC output signal. A pulse modulator generate a pulse-width modulation signal to the DC-to-DC converter to adjust a DC impedance of the wireless power receiver by modifying a duty cycle of the pulse-width modulation signal responsive to at least one of a voltage of the DC input signal, a current of the DC input signal, a voltage of the DC output signal, and a current of the DC output signal.

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Номер записи: 26
03-04-2014 дата публикации

Power Receiving Device Having Device Discovery and Power Transfer Capabilities

Номер: US20140091626A1
Автор: John Walley, Reinier Van Der Lee, Vadim Bishtein, Yasantha Rajakarunanayake
Принадлежит: Broadcom Corp

A wireless power transfer system is disclosed that includes a power station and a chargeable device. The power station transmits discovery beacons in order to detect a chargeable device within its vicinity using any available communication protocols and/or standards. Once a device is discovered, the power station can perform coil selection with the device in order to select preferred coils for power transfer. In addition, the chargeable device is capable of detecting the beacon signal and providing a response to notify the power station of its presence. The chargeable device is capable of performing its own coil selection for further optimization and includes various assistance functionality to aid a user in optimizing a connection with the power station.

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Номер записи: 27
10-04-2014 дата публикации

Non-contact power receiving apparatus, non-contact power transmitting apparatus, and non-contact power transmitting/receiving system

Номер: US20140097671A1
Автор: Shinji Ichikawa, Toru Nakamura
Принадлежит: Toyota Motor Corp

A non-contact power receiving apparatus includes a power reception unit for receiving electric power from a power transmitting apparatus outside of a vehicle in a non-contact manner, and a control device for controlling the electric power transmission from the power transmitting apparatus. The control device controls the electric power transmission based on a monitoring result obtained by monitoring the surroundings of the vehicle, and a door state detection result obtained by detecting whether or not a door of the vehicle is open. The control device causes, if the door state detection result indicates that the door is open, the power transmitting apparatus to reduce the power of the electric power transmission, and controls the electric power transmission without using the monitoring result.

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Номер записи: 28
04-01-2018 дата публикации

DETECTION DEVICE, POWER RECEPTION DEVICE, POWER TRANSMISSION DEVICE AND NON-CONTACT POWER SUPPLY SYSTEM

Номер: US20180003659A1
Автор: Miyamoto Takashi, MURAKAMI TOMOMICHI, Nakano Hiroaki
Принадлежит:

A detection device, including: one or a plurality of magnetic coupling elements configured to have one or a plurality of coils; and a detection unit that measures or calculates an effective resistance values of the magnetic coupling elements or an effective resistance value of a circuit including at least the magnetic coupling elements and determines a presence or absence of a foreign substance based on a change in the effective resistance value. 114.-. (canceled)15. A power receiving device comprising:a resonance circuit that includes a power receiving coil electrically coupled to a resonance capacitor;a memory configured to store a predetermined reference Q value; anda control circuit configured to control a charge operation with respect to a battery and to control a load modulation circuit to communicate with a power transmitting device;wherein the predetermined reference Q value is determined in advance based on where the power receiving device is disposed relative to the power transmitting device.16. The power receiving device according to claim 15 , wherein the predetermined reference Q value is determined where the power receiving device is disposed on the power transmitting device.17. The power receiving device according to claim 15 , wherein the predetermined reference Q value is determined based on measurements taken without a foreign substance being present between the power receiving device and the power transmitting device.18. The power receiving device according to claim 15 , wherein the power receiving device is configured to perform one way communication to the power transmitting device.19. The power receiving device according to claim 15 , wherein the control circuit receives a result from a foreign substance detection circuit in the power transmitting device claim 15 , the result indicating the presence or absence of a foreign substance between the power receiving device and the power transmitting device.20. The power receiving device according to ...

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Номер записи: 29
05-01-2017 дата публикации

PORTABLE TERMINAL CHARGING APPARATUS AND AUTOMOBILE HAVING PORTABLE TERMINAL CHARGING APPARATUS MOUNTED THEREIN

Номер: US20170005505A1
Автор: HATAKEYAMA KEN, OTA Tomohiro, YAMAMOTO Takeshi, YAMANISHI YUTO
Принадлежит: Panasonic Intellectual Property Management Co., Ltd.

A charging coil of a portable terminal charging apparatus is provided with a first detection coil, and a second detection coil disposed inward of the first detection coil and having a smaller diameter than a diameter of the first detection coil. The first and second detection coils are connected to a controller. If the ratio (V2/V1) of a second voltage (V2) detected by the second detection coil to a first voltage (V1) detected by the first detection coil is less than a first set value held in a memory between starting of conduction of the charging coil and connection of a charging load of the portable terminal, the controller performs a safety operation. 1. A portable terminal charging apparatus comprising:a support plate whose front surface side is used as a portable terminal placement portion;a charging coil that charges a portable terminal placed on the portable terminal placement portion;a controller that is connected to the charging coil; anda memory that is connected to the controller,wherein the charging coil is provided with a first detection coil, and a second detection coil disposed inward of the first detection coil and having a smaller diameter than a diameter of the first detection coil, and the first and second detection coils are connected to the controller, andwherein, if a ratio (V2/V1) of a second voltage (V2) detected by the second detection coil to a first voltage (V1) detected by the first detection coil is less than a first set value held in the memory between starting of conduction of the charging coil and connection of a charging load of the portable terminal, the controller performs a safety operation.2. The portable terminal charging apparatus of claim 1 ,wherein, if the ratio (V2/V1) of the second voltage (V2) to the first voltage (V1) is less than the first set value between starting of conduction of the charging coil and completion of an authentication and configuration phase, the controller performs the safety operation.3. The portable ...

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Номер записи: 30
05-01-2017 дата публикации

Wireless power transmission apparatus installable on wall

Номер: US20170005518A1
Автор: Chun-Kil Jung
Принадлежит: Hanrim Postech Co Ltd

The present invention provides a wireless power transmission apparatus installable on a wall, the wireless power transmission apparatus comprising: a housing configured to allow a wireless power reception apparatus to be placed thereon; a plug, a part of which is embedded in the housing, the plug being configured to be coupled with a socket for alternating current power installed on a wall; and a transmission unit which is embedded in the housing, converts an alternating current power supplied from the plug to a direct current power, and outputs a wireless power signal to the wireless power reception apparatus.

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Номер записи: 31
05-01-2017 дата публикации

RESONANT TYPE TRANSMISSION POWER SUPPLY DEVICE AND RESONANT TYPE TRANSMISSION POWER SUPPLY SYSTEM

Номер: US20170005524A1
Автор: AKUZAWA Yoshiyuki, Ezoe Toshihiro, ITO Yuki, SAKAI Kiyohide
Принадлежит: Mitsubishi Electric Engineering Company, Limited

A resonant type transmission power supply device includes a pulse input circuit that inputs a pulse voltage to a transmission antenna at set intervals, a variable resonance frequency circuit that causes the resonance frequency of the transmission antenna to be variable and performs sweep detection of the resonance frequency when a pulse voltage is inputted, a frequency characteristic detecting circuit that detects a frequency characteristic of the transmission antenna when the sweep detection is performed, a foreign object detecting circuit that detects the presence or absence of a foreign object in an electromagnetic field generated from the transmission antenna on the basis of a detection result acquired by the frequency characteristic detecting circuit, and a power control circuit that reduces or stops the supply of electric power to the transmission antenna when a foreign object is detected. 1. A resonant type transmission power supply device comprising:a pulse input circuit to input a pulse voltage to a transmission antenna at set intervals;a variable resonance frequency circuit to cause a resonance frequency of said transmission antenna to be variable and perform sweep detection of the resonance frequency when a pulse voltage is inputted by said pulse input circuit;a frequency characteristic detecting circuit to detect a frequency characteristic of said transmission antenna when the sweep detection of the resonance frequency is performed by said variable resonance frequency circuit;a foreign object detecting circuit to detect presence or absence of a foreign object in an electromagnetic field generated from said transmission antenna on a basis of a detection result acquired by said frequency characteristic detecting circuit; anda power control circuit to reduce or stop supply of electric power to said transmission antenna when a foreign object is detected by said foreign object detecting circuit.2. The resonant type transmission power supply device according ...

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Номер записи: 32
13-01-2022 дата публикации

Q-FACTOR DETECTION METHOD

Номер: US20220014047A1
Автор: Deng Chenggang
Принадлежит:

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. 1. A wireless power transmitter , comprising:a transmit coil coupled between a first node and a second node;a first half-bridge circuit coupled between an input voltage and a ground, the first half-bridge circuit coupled to the first node;a second half-bridge circuit coupled between the input voltage and the ground, the second half-bridge circuit coupled to the second node;a capacitor circuit having a plurality of capacitors coupled between the first node and the second node;a measurement circuit coupled to the capacitance circuit and to the first node; anda transmit driver coupled to provide a control signal to the measurement circuit, the first half-bridge circuit, and the second half-bridge circuit,wherein during a measurement test, the transmit driver configures the first half bridge circuit, the second half-bridge circuit, and the measurement circuit to form an LC oscillating circuit that includes the transmit coil and the plurality of capacitors in the capacitor circuit, monitors a sinusoidal voltage at the first node in the LC oscillating circuit to determine a voltage amplitude at the first node, and determines a result from the voltage amplitude at the first node.2. The transmitter of claim 1 , wherein the result is a Q-factor claim 1 , wherein the Q-factor is calculated from the voltage amplitude at the first node and a current amplitude at the first node determined by the ...

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Номер записи: 33
07-01-2016 дата публикации

Power receiving device, control method of power receiving device, and power feeding system

Номер: US20160006268A1
Автор: Shigeru Arisawa
Принадлежит: Sony Corp

A power receiving device including: a power receiving coil configured to receive power when a power feeding device supplies the power via a magnetic field; an alternating-current power supply configured to apply an alternating voltage to the power receiving coil; and a foreign matter detecting section configured to generate an amount of change in impedance of the power receiving coil from a current induced in the power receiving coil to which the alternating voltage is applied and the alternating voltage, and detect foreign matter between the power receiving coil and the power feeding device on a basis of the amount of change.

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Номер записи: 34
04-01-2018 дата публикации

POWER FEEDING APPARATUS, POWER RECEIVING APPARATUS, POWER FEEDING SYSTEM, AND METHOD OF CONTROLLING POWER FEEDING

Номер: US20180006503A9
Автор: BUNSEN KEIGO, Fujimaki Kenichi, Kozakai Osamu, Nakano Hiroaki, Terashima Toru
Принадлежит:

A power feeding apparatus is provided. The power feeding apparatus includes a power feeding unit configured to supply electric power to a power receiving apparatus through a magnetic field; a measuring unit configured to measure an electric characteristic value and to generate a measurement value; a power receiving unit configured to provide a set value; and a foreign substance detection unit configured to detect a foreign substance in the magnetic field based on the set value and the measurement value. A power receiving apparatus, a power feeding system, and a method of controlling power feeding are also provided. 119-. (canceled)20. A power transmitting device comprising: electronically perform a measurement on a resonance circuit to obtain a quality factor of the resonance circuit,', 'electronically use a reference value from a power receiving device to obtain a threshold value, and', 'electronically use the quality factor and the threshold value to detect an absence of a foreign object in a magnetic field or a presence of the foreign object in the magnetic field., 'circuitry configured to21. The power transmitting device according to claim 20 , wherein the resonance circuit wirelessly emits the magnetic field.22. The power transmitting device according to claim 20 , wherein the quality factor is an electric characteristic value related to power transmission efficiency between the power transmitting device and the power receiving device.23. The power transmitting device according to claim 20 , wherein the circuitry performs the measurement when the power receiving device is on a surface of the power transmitting device.24. The power transmitting device according to claim 20 , wherein the circuitry detects the absence of the foreign object in the magnetic field or the presence of the foreign object in the magnetic field by comparing the threshold value with the quality factor.25. The power transmitting device according to claim 20 , wherein the circuitry detects ...

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Номер записи: 35
04-01-2018 дата публикации

DETECTING AN OBJECT ON A WIRELESS CHARGING DEVICE

Номер: US20180006504A1
Автор: Dinc Bolat, Li Qinghua, LIN Sen, Lin Xintian E., Liu Kai, Shao Lei, WU YONGWEI
Принадлежит:

A power transmitting device is disclosed comprising: one or more coils; at least one memory that stores computer-executable instructions; and at least one processor configured to access the at least one memory. The at least one processor may be configured to execute the computer-executable instructions to: cause to send to a first device a first load measurement request at a first instance and a second load measurement request at a second instance. The computer-executable instructions may cause the processor to receive a first load measurement associated with the first load measurement request and a second load measurement associated with the second load measurement request. The computer-executable instructions may cause the processor to determine a first average measurement of the first load measurement and the second load measurement. The computer-executable instructions may cause the processor to send to a second device a third load measurement request at a third instance and a fourth load measurement request at a fourth instance. The computer-executable instructions may cause the processor to receive a third load measurement associated with the third load measurement request and a fourth load measurement associated with the fourth load measurement request. The computer-executable instructions may cause the processor to determine a second average measurement of the third load measurement and the fourth load measurement. The computer-executable instructions may cause the processor to perform a load measurement of the one or more coils of the power transmitting device. The computer-executable instructions may cause the processor to determine a presence of one or more rogue devices based at least in part on a comparison of the load measurement and an aggregate of the first average measurement and the second average measurement. 1. A power transmitting device comprising:one or more coils;at least one memory that stores computer-executable instructions; and cause to ...

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Номер записи: 36
04-01-2018 дата публикации

WIRELESS POWER TRANSFER DEVICE WITH FOREIGN OBJECT DETECTION, SYSTEM, AND METHOD FOR PERFORMING THE SAME

Номер: US20180006505A1
Автор: Fujimaki Kenichi, Komiyama Shinji, Kozakai Osamu, Nakano Hiroaki
Принадлежит:

Methods and apparatus for detecting the presence of undesirable foreign matter in a region between a wireless power transmission apparatus and a power reception apparatus are described. First and second detection methods, based on different detection schemes, may be used to detect and distinguish the presence of foreign matter from misalignment during power transfer operation. A first detection method may be used before power is transferred to a load in a power reception apparatus, and a second detection method may be used while power is supplied to the load. 125-. (canceled)26. A power reception apparatus comprising:a load configured to use electrical power; anda power receiver configured to wirelessly receive transmissions of the electrical power from a power transmission apparatus, the power reception apparatus is configured to send a threshold Q-value to the power transmission apparatus in response to receiving one of the transmissions from the power transmission apparatus,wherein the threshold Q-value is a quality factor of the power receiver that is measurable when no foreign matter is near the power receiver, the power reception apparatus is configured to store the threshold Q-value prior to receiving the transmissions from the power transmission apparatus.27. The power reception apparatus of claim 26 , wherein the load is a battery.28. The power reception apparatus of claim 26 , wherein the power reception apparatus is an electric vehicle claim 26 , a home electronic appliance claim 26 , or a mobile phone.29. The power reception apparatus according to claim 26 , wherein the electrical power is used to calculate a power loss claim 26 , the power loss indicates an amount of the electrical power that has been lost during any of the transmissions.30. The power receiving apparatus according to claim 26 , wherein said one of the transmissions occurs before an occurrence of another of the transmissions.31. The power reception apparatus of claim 30 , wherein the ...

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Номер записи: 37
07-01-2021 дата публикации

Wireless charging apparatus and method

Номер: US20210006099A1
Автор: Se-Ho Park, Sung-Bum Park, Young-Min Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

Methods and apparatus for wireless charging are provided. Transmission power transmitted from a wireless power transmitter is received at a power receiver of a wireless power receiver. A battery of the wireless power receiver is charged with the received transmission power. It is determined whether the battery is fully charged. A packet from a communication unit of the wireless power receiver is transmitted to the wireless power transmitter when the battery is fully charged. An auxiliary charge of the battery is performed by receiving strength-reduced transmission power from the wireless power transmitter.

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Номер записи: 38
03-01-2019 дата публикации

PROTECTION AND CONTROL OF WIRELESS POWER SYSTEMS

Номер: US20190006836A1
Автор: Danilovic Milisav, Esteban Bryan Ashworth, Yeung Kinjeo
Принадлежит:

One general aspect includes methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for fault protection of a bidirectional wireless power transfer system. The method includes the actions of detecting, by control circuitry of a wireless power transfer device, a fault for the bidirectional wireless power transfer system. Identifying an operating personality of the wireless power transfer device and a hardware configuration of the wireless power transfer device. Identifying, in response to detecting the fault and based on the operating personality and the hardware configuration, protection operations for protecting the wireless power transfer device from the fault. Controlling operations of the wireless power transfer device according to the protection operations. Other implementations of this aspect include corresponding systems, circuitry, controllers, apparatus, and computer programs, configured to perform the actions of the methods, encoded on computer storage devices. 1. A fault protection method for a bidirectional wireless power transfer system , the method comprising:detecting, by control circuitry of a wireless power transfer device, a fault for the bidirectional wireless power transfer system;identifying, by the control circuitry, an operating personality of the wireless power transfer device and a hardware configuration of the wireless power transfer device;in response to detecting the fault, identifying, by the control circuitry and based on the operating personality and the hardware configuration, protection operations for protecting the wireless power transfer device from the fault; andcontrolling, by the control circuitry, operations of the wireless power transfer device according to the protection operations.2. The method of claim 1 , wherein claim 1 , in response to the operating personality indicating that the wireless power transfer device is operating as a wireless power transmitter claim 1 , the ...

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Номер записи: 39
03-01-2019 дата публикации

WIRELESS POWER TRANSMITTER

Номер: US20190006889A1
Автор: Iwasaki Tatsuya
Принадлежит:

A power transmitter transmits an electric power signal S to a wireless power receiver. A transmission antenna includes a transmission coil and a resonance capacitor coupled in series. A driver applies a driving signal S to the transmission coil. A TX controller controls the driver. A wireless device detector of the TX controller detects a neighboring wireless device before electric power transmission is started. 1. A wireless power transmitter comprising:a transmission antenna comprising a resonance capacitor and a transmission coil coupled in series;a driver comprising a bridge circuit structured to apply a driving voltage across the transmission antenna; anda power transmission control circuit structured to control the driver,wherein the power transmission control circuit comprises a wireless device detector structured to detect a neighboring wireless device before electric power transmission is started.2. The wireless power transmitter according to claim 1 , wherein the wireless device detector detects the wireless device based on an electrical state of the transmission antenna in a state in which the driver suspends a switching operation thereof.3. The wireless power transmitter according to claim 1 , wherein the wireless device detector detects the wireless device based on an electrical state of a power supply line of the driver in a state in which a supply of power to the driver is suspended.4. The wireless power transmitter according to claim 1 , further comprising a reception coil claim 1 ,wherein the wireless device detector detects the wireless device based on an electrical state of the reception coil before electric power transmission is started.5. The wireless power transmitter according to claim 4 , wherein the wireless device detector detects the wireless device based on an electrical state of the reception coil after electric power transmission is started.6. The wireless power transmitter according to claim 1 , wherein claim 1 , when the wireless ...

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Номер записи: 40
09-01-2020 дата публикации

WIRELESS POWER TRANSMISSION DEVICE FOR VEHICLE AND WIRELESS CHARGING METHOD

Номер: US20200009972A1
Автор: Hwang Byong Uk, Jung Chun Kil
Принадлежит:

A wireless power transmission device for a vehicle and a method are provided. The wireless power transmission device for a vehicle may transmit a signal for detection of a wireless power reception device by using a lower frequency band that is different from an operating frequency band used to control the vehicle. The wireless power transmission device may receive a response signal for the transmitted signal and a power control signal from the wireless power reception device. The wireless power transmission device may control an operating frequency or a voltage (or both) in the wireless power transmission device for the vehicle according to the power control signal. The wireless power transmission device may transmit wireless power to the wireless power reception device. 1. A method performed by a wireless power transmission device for use in a vehicle , the method comprising:setting a first resonance frequency of a wireless power transmission from the wireless power transmission device to a wireless power reception device, such that the first resonance frequency is different from an operation frequency band used by a control system of the vehicle; andtransmitting the wireless power transmission to the wireless power reception device.2. The method of claim 1 , wherein the operation frequency band used by the control system of the vehicle includes an operation frequency of a smart key.3. The method of claim 1 , further comprising:transmitting, from the wireless power transmission device, a detecting signal for detecting the wireless power reception device; andreceiving a response signal and a power control signal from the wireless power reception device in response to the detecting signal, wherein the first resonance frequency is further based, at least in part, on the power control signal.4. The method of claim 1 , wherein the first resonance frequency of the wireless power transmission device for the vehicle and a second resonance frequency of the wireless power ...

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Номер записи: 41
27-01-2022 дата публикации

METHOD AND APPARATUS FOR DETECTING ELECTRICALLY CONDUCTIVE FOREIGN BODIES DURING INDUCTIVE ENERGY TRANSMISSION

Номер: US20220029470A1
Автор: BÖTTIGHEIMER Mike, HERMANN Stefanie, PARSPOUR Nejila
Принадлежит:

In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil () and a secondary coil (), at least one sensor coil () is arranged between the primary coil () and the secondary coil (), and a current flowing in the sensor coil () due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil () is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies () between the primary coil () and the secondary coil (). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus. 1125125. Method for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil () and a secondary coil () , in particular during inductive charging processes , in which method at least one sensor coil () is arranged between the primary coil () and the secondary coil () , and in which a current induced in the sensor coil () during the energy transmission is detected and evaluated ,{'b': 5', '3', '1', '4', '1', '2, 'i': 's', 'characterized in that the sensor coil () is connected to at least one capacitor (C) to form a resonant circuit which is matched to an excitation frequency of the primary coil () and in that the phase position of the current in the resonant circuit in relation to a reference signal is used to determine whether one or multiple electrically conductive foreign bodies () are present between the primary coil () and the secondary coil ().'}2. Method according to claim 1 ,characterized in that{'b': '1', 'an excitation of the primary coil () is ...

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Номер записи: 42
12-01-2017 дата публикации

Method and system of wireless power transfer foreign object detection

Номер: US20170012478A1
Автор: Amer Atrash, Jonathan Knight, Ross E. Teggatz, Wayne Chen
Принадлежит: Triune Systems LLC

A wireless power transfer foreign object detector having, at least one secondary receiver coil, an adjustable load electrically coupled to the at least one secondary receiver coil, and at least one temperature sensor providing at least one temperature detection signal, wherein the at least one temperature sensor responsive to at least one thermal state of the at least one secondary receiver coil, and wherein foreign object detection is based at least in part upon the at least one temperature detection signal.

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Номер записи: 43
09-01-2020 дата публикации

Metallic foreign object detector, wireless power transmitting device, wireless power receiving device, and wireless power transmission system

Номер: US20200012007A1
Автор: Akira GOTANI, Kazuki Kondo, Kazunori Oshima
Принадлежит: TDK Corp

A metallic foreign object detector is used in a wireless power transmission system that transmits power by wireless from a feeding coil to a receiving coil and includes an antenna coil, a capacitor that forms a resonance circuit together with the antenna coil, a vibration detection circuit configured to detect generation of a vibration signal in the resonance circuit, and a determination circuit that detects the presence/absence of a metallic foreign object according to the vibration signal. The vibration detection circuit is configured to output a detection state signal indicating the detection state of generation of the vibration signal. The determination circuit is configured to execute an operation of detecting the presence/absence of a metallic foreign object according to the detection state signal.

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Номер записи: 44
15-01-2015 дата публикации

Device for Inductively Transmitting Power

Номер: US20150015086A1
Автор: Jens Berger, Josef Krammer
Принадлежит: Bayerische Motoren Werke AG

A system is provided for inductive power transmission. The system includes a primary unit having a primary coil and a secondary unit having a secondary coil. The primary coil generates a magnetic transmission field in a transmission area between the primary unit and the secondary unit. The system includes a metal detector, and the metal detector is suitable for the detection of a metallic object situated in the transmission area.

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Номер записи: 45
14-01-2016 дата публикации

Resonators for wireless power transfer systems

Номер: US20160013661A1
Автор: Andre B. Kurs, Guillaume Lestoquoy, Morris P. Kesler
Принадлежит: WiTricity Corp

The disclosure features transmitters for wireless power transfer that include first and second coils each having at least one loop extending in a first plane and a controller configured to drive the first and second coils with electrical currents during operation of the transmitter, where the controller is configured so that during operation of the transmitter: in a first mode of operation, the controller drives the first and second coils to generate a magnetic field having a dipole moment that is parallel to the first plane to wirelessly transmit power to first and second receivers; and in a second mode of operation, the controller drives at least one of the first and second coils to generate a magnetic field having a dipole moment that is orthogonal to the first plane to wirelessly transmit power to a third receiver.

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Номер записи: 46
14-01-2016 дата публикации

Wireless power supply system

Номер: US20160013664A1
Автор: Motonao Niizuma, Yuji Maekawa
Принадлежит: IHI Corp

A wireless power supply system includes a power supply coil installed on the ground, an inner balloon in which a power supply coil is mounted and configured to expand and contract to adjust a vertical position of the power supply coil, and an outer balloon provided to cover both the power supply coil and the inner balloon and configured to expand to occupy a space between the power supply coil and a power receiving coil, and wirelessly supplies power from the power supply coil to the power receiving coil.

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Номер записи: 47
03-02-2022 дата публикации

Systems and methods for vehicle wireless charging

Номер: US20220032802A1
Автор: Anthony MELATTI, Danielle ROSENBLATT, Hamid M. Golgiri, Patrick Lawrence Jackson Van Hoecke
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Method and apparatus are disclosed for preventing damage to an object within a charging field of a wireless vehicle battery charger. An example vehicle includes a wireless vehicle battery charger having a charging field, a plurality of Bluetooth antennas, and a processor. The processor is configured to identify a location of an object using one or more of the plurality of Bluetooth antennas, and, responsive to determining that the object is within the charging field, disable the wireless vehicle battery charger.

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Номер записи: 48
10-01-2019 дата публикации

POWER RECEPTION APPARATUS, CONTROL METHOD AND PROGRAM FOR POWER RECEPTION APPARATUS

Номер: US20190013698A1
Автор: Shichino Takahiro
Принадлежит:

A power reception apparatus including a power receiving unit receiving electric power wirelessly supplied from a power transmission apparatus, a member capable of being in at least a first state for attachment and detachment of a load unit and a second state restricting the attachment and detachment, wherein the load unit can consume the electric power received by the power receiving unit in a state where the load unit is attached to the power reception apparatus, a detection unit detecting that the member will be turned into the first state, and a transmission unit transmitting information for requesting the power transmission apparatus to stop power transmission when the detection unit detects that the member will be turned into the first state while the power receiving unit is receiving the power from the power transmission apparatus and the load unit is consuming the power received by the power receiving unit. 1. A power reception apparatus comprising:a power receiving unit configured to receive electric power wirelessly supplied from a power transmission apparatus;a member capable of being in at least a first state for attachment and detachment of a load unit and a second state restricting the attachment and detachment of the load unit, wherein the load unit can consume the electric power received by the power receiving unit in a state in which the load unit is attached to the power reception apparatus;a detection unit configured to detect that the member will be turned into the first state; anda transmission unit configured to transmit information for requesting the power transmission apparatus to stop power transmission when the detection unit detects that the member will be turned into the first state while the power receiving unit is receiving the electric power from the power transmission apparatus and the load unit is consuming the electric power received by the power receiving unit.2. The power reception apparatus according to claim 1 , wherein the load ...

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Номер записи: 49
10-01-2019 дата публикации

Intruding metal detection method for induction type power supply system and related supplying-end module

Номер: US20190013701A1
Автор: Chi-Che Chan, Ming-Chiu TSAI
Принадлежит: Fu Da Tong Technology Co Ltd

An intruding metal detection method for a supplying-end module of an induction type power supply system having a supplying-end coil includes interrupting at least one driving signal of the induction type power supply system to stop driving the supplying-end coil during a measurement period, to generate a coil signal of the supplying-end coil; measuring a plurality of peaks of the coil signal within a plurality of consecutive oscillation cycles of the coil signal, to obtain a plurality of peak trigger voltages, respectively; calculating a first attenuation parameter according to a first peak trigger voltage and a second peak trigger voltage among the plurality of peak trigger voltages; and comparing the first attenuation parameter with a first threshold value to determine whether there is an intruding metal existing in a power supply range of the induction type power supply system.

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Номер записи: 50
10-01-2019 дата публикации

POWER TRANSMISSION APPARATUS, POWER RECEIVING APPARATUS, CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM

Номер: US20190013703A1
Автор: Shichino Takahiro
Принадлежит:

A power transmission apparatus has a power transmission function of sending power to a power receiving apparatus in wireless power transmission, and a communication function of performing communication using a frequency different from a frequency of an electromagnetic wave used in the wireless power transmission. The power transmission function limits the power to be sent to the power reception function in a case where the communication function is performing the communication. 1. A power transmission apparatus , comprising:a power transmission unit configured to transmit power to a power receiving apparatus; anda communication unit configured to perform communication,wherein the power transmission unit limits transmission power to the power receiving apparatus in a case where the communication unit is performing communication that is not associated at least with control of power transmission to the power receiving apparatus.2. The power transmission apparatus according to claim 1 , wherein in a case where the transmission power to the power receiving apparatus is limited claim 1 , the power transmission unit transmits the power to the power receiving apparatus using power that influences the communication by the communication unit at not more than a predetermined level.3. The power transmission apparatus according to claim 1 , wherein the power transmission unit further performs claim 1 , with the power receiving apparatus claim 1 , control communication associated with the control of the power transmission to the power receiving apparatus.4. The power transmission apparatus according to claim 3 , wherein in a case where the communication unit is performing the communication that is not associated at least with the control of the power transmission to the power receiving apparatus claim 3 , the power transmission unit notifies the power receiving apparatus claim 3 , by the control communication claim 3 , that the transmission power to the power receiving apparatus ...

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Номер записи: 51
14-01-2021 дата публикации

Wireless power transfer system and devices

Номер: US20210013749A1
Автор: Jeffrey Douglas Louis
Принадлежит: Apple Inc

A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to regulate power drawn during a power transfer phase to maintain a substantially steady power level that is less than or equal to a power consumption level demanded by an associated load. The wireless power transmitting device is configured to determine the presence of a foreign object by monitoring the power transmitted or the power received and identifying a characteristic change in steady state power indicative of the presence of a foreign object.

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Номер записи: 52
09-01-2020 дата публикации

FEED SYSTEM, FEED UNIT, AND ELECTRONIC UNIT

Номер: US20200014234A1
Автор: URAMOTO YOICHI
Принадлежит:

A feed system has a first electronic unit, a second electronic unit, and a feed unit. The first electronic unit and the feed unit are separated. The feed unit transmits power to a power reception section of the second electronic unit based upon result information of a first authentication between the first electronic unit and the second electronic unit. The feed unit performs a second authentication on the second electronic unit in conjunction with power transmission. 1. A power transmitter , comprising: detect a power receiving unit to be charged before the power transmitting unit performs pre-charging of the power receiving unit, and', 'transmit power to the power receiving unit during main charging based upon result information of an authentication between the power transmitting unit and the power receiving unit., 'a power transmitting unit configured to2. The power transmitter according to claim 1 , wherein the power transmitting unit includes a power transmission coil and a power transmission capacitor element.3. The power transmitter according to claim 1 , wherein the power transmitting unit is configured to transmit the power to the power receiving unit using at least one of a magnetic field and an electric field coupling to transmit the power.4. The power transmitter according to claim 1 , further comprising:a detection section configured to detect a foreign metal on the power transmitter.5. The power transmitter according to claim 1 , further comprising:a communication section configured to communicate with the power receiving unit by either a wireless communication or a wired communication.6. A power receiver claim 1 , comprising: send a charging request to a power transmitting unit before performing an authentication between the power transmitting unit and the power receiving unit, and', 'receive power from the power transmitting unit during main charging after performing the authentication between the power transmitting unit and the power receiving unit ...

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Номер записи: 53
09-01-2020 дата публикации

METHOD FOR OPERATING AN INDUCTIVE CHARGING DEVICE

Номер: US20200014249A1
Автор: Gonda Martin, Krupezevic Dragan, MACK Juergen
Принадлежит:

A method for operating an inductive charging device, in which a foreign object detection is carried out in at least one method step. It is provided that in at least one method step, the foreign object detection is carried out as a function of at least one characteristic power transmission variable. 110-. (canceled)11. A method for operating an inductive charging device , comprising:detecting, by the inducting charging device, a foreign object detection, the detecting being carried out as a function of at least one characteristic power transmission variable.12. The method as recited in claim 11 , further comprising:determining at least one characteristic precision variable of the foreign object detection as a function of the at least one characteristic power transmission variable.13. The method as recited in claim 11 , further comprising:determining at least one execution frequency of the foreign object detection as a function of the at least one characteristic power transmission variable.14. The method as recited in claim 11 , wherein the foreign object detection is carried out as a function of at least one change over time of an amplitude fluctuation and/or a gradient claim 11 , of the characteristic power transmission variable.15. The method as recited in claim 11 , further comprising:suspending the foreign object detection as a function of a value of the characteristic power transmission variable undershooting a limit value.16. The method as recited in claim 11 , wherein the foreign object detection is carried out as a function of a value of the characteristic power transmission variable exceeding a limit value.171. The method as recited in claim claim 11 , further comprising:determining at least one execution period of time of the foreign object detection as a function of the at least one characteristic power transmission variable.18. An inductive charging device claim 11 , comprising:at least one open-loop and/or closed-loop control unit configure to carry out ...

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Номер записи: 54
17-01-2019 дата публикации

ELECTRIC POWER TRANSMISSION APPARATUS AND ELECTRIC POWER TRANSMISSION SYSTEM

Номер: US20190016228A1
Автор: HASHIMOTO Toshiya, Misawa Takahiro, NAGATA Hideo
Принадлежит:

A control unit of an electric power transmission apparatus is configured to perform alignment processing in which an electric power transmission unit and an electric power reception unit are aligned with each other and foreign matter sensing processing for sensing whether or not a foreign matter is present between the electric power transmission unit and the electric power reception unit, by using an image shot by a camera. The control unit selects an alignment prioritized mode in which alignment processing is performed in preference to foreign matter sensing processing before start of electric power transmission, and selects a foreign matter sensing prioritized mode in which foreign matter sensing processing is performed in preference to alignment processing during electric power transmission. 1. An electric power transmission apparatus comprising:an electric power transmission portion configured to wirelessly transmit electric power to an electric power reception portion of an electric power reception apparatus;a shooting apparatus configured to shoot surroundings of the electric power transmission portion; anda controller configured to perform alignment processing and foreign matter sensing processing by using an image shot by the shooting apparatus, the alignment processing being a process in which the electric power transmission portion and the electric power reception portion are aligned with each other, the foreign matter sensing processing being a process for sensing whether a foreign matter is present between the electric power transmission portion and the electric power reception portion, select an alignment prioritized mode in which the alignment processing is performed in preference to the foreign matter sensing processing before start of electric power transmission from the electric power transmission portion to the electric power reception portion, and', 'select a foreign matter sensing; prioritized mode in which the foreign matter sensing processing ...

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Номер записи: 55
21-01-2021 дата публикации

Electric vehicle and charge control apparatus for electric vehicle

Номер: US20210016669A1
Автор: Fumiyuki Moriya, Yuta TOTSUKA
Принадлежит: Subaru Corp

An electric vehicle includes a power receiver and a controller. The power receiver is configured to wirelessly receive electric power from power transmission equipment disposed outside the vehicle. The controller is configured to control power transmission from the power transmission equipment to the power receiver. The controller includes a determination processor and a frequency control unit. The determination processor is configured to make a determination, in a case where the power transmission is stopped due to a foreign object present between the power transmission equipment and the vehicle, as to whether the power transmission is restartable with a predetermined frequency after the power transmission is stopped. The frequency control unit is configured to change the frequency with which the determination processor makes the determination.

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Номер записи: 56
19-01-2017 дата публикации

WIRELESS POWER TRANSMISSION APPARATUS AND METHOD

Номер: US20170018965A1
Автор: Lee Jaesung, LEE Jihyun, Park Jinmoo
Принадлежит: LG ELECTRONICS INC.

A wireless power transmission device is disclosed. The wireless power transmission device, which is a medium-power wireless power transmission device that transmits power to a low-power wireless power reception device or a medium-power wireless power reception device, includes: a power conversion unit that converts electrical energy to a power signal; and a communications and control unit that communicates with the wireless power reception device and controls power transfer, the power conversion unit including: an inverter that converts DC input to an AC waveform that drives a resonant circuit; a primary coil that creates a magnetic field; and a current sensor that monitors the current in the primary coil, wherein the inverter operates in a full-bridge mode that drives a plurality of bridges or in a half-bridge mode that drives a single bridge. 1. A wireless power transmission device , which is a medium-power wireless power transmission device that transmits power to a low-power wireless power reception device or a medium-power wireless power reception device , the wireless power transmission device comprising:a power conversion unit that converts electrical energy to a power signal; anda communications and control unit that communicates with the wireless power reception device and controls power transfer, an inverter that converts DC input to an AC waveform that drives a resonant circuit;', 'a primary coil that generates a magnetic field; and', 'a current sensor that monitors current in the primary coil,, 'the power conversion unit comprisingwherein the primary coil has a rectangular shape with a single layer and a number of turns per layer is 12, andwherein the inverter operates in a full-bridge mode that drives a plurality of bridges or in a half-bridge mode that drives a single bridge, the initial operation mode is set to the half-bridge mode, and if a detected wireless power reception device is the medium-power wireless power reception device, the ...

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Номер записи: 57
19-01-2017 дата публикации

WIRELESS INDUCTIVE POWER TRANSFER

Номер: US20170018977A1
Автор: STARING Antonius Adriaan Maria, Van Wageningen Andries
Принадлежит:

A wireless power transfer system includes a power transmitter () providing power to a power receiver () via an inductive power signal. The power transmitter () and receiver () can operate in different modes including a test mode and a power transfer mode. Operating parameters of the power receiver () are constrained in the test mode relative (and specifically the loading). A foreign object detector () generates a foreign object detection estimate from a comparison of a measured load to an expected load of the inductive power signal when the power receiver is operating in the test mode. A controller () enters the power transmitter () and receiver () into the power transfer mode when the foreign object detection estimate is indicative of no detection of a foreign object. In the power transfer mode, a parasitic power loss detector () generates a parasitic power loss detection for the power transfer if a parasitic power loss estimate is outside a range. 1. A power transmitter for a wireless power transfer system including a power receiver for receiving a power transfer from the power transmitter via a wireless inductive power signal; a transmit power inductor for generating the wireless inductive power signal;', 'a first detector arranged to generate, when in a test mode, a foreign object detection estimate in response to a comparison of a first measured load of the wireless inductive power signal to an expected load of the wireless inductive power signal when the power receiver is operating in a test mode, a loading of the wireless inductive power signal by the power receiver when operating in the test mode being constrained relative to the loading of the wireless inductive power signal by the power receiver when operating in a power transfer mode during a power transfer phase;', 'a controller for entering at least one of the power transmitter and the power receiver into a power transfer mode when the foreign object detection estimate indicates that no foreign object ...

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Номер записи: 58
17-04-2014 дата публикации

Repeaters for enhancement of wireless power transfer

Номер: US20140103881A1
Автор: Alireza Hormoz Mohammadian, Ernest T. Ozaki, Matthew S. Grob
Принадлежит: Qualcomm Inc

Exemplary embodiments are directed to wireless power transfer. A wireless power transfer system include a transmit circuit with a transmit antenna driven from a power amplifier to generate a near field radiation at a resonant frequency within a first coupling mode region surrounding the transmit antenna. One or more repeater antennas are disposed at different locations within the first coupling mode region. Each repeater antenna generates an enhanced near field radiation at the resonant frequency within a coupling mode region corresponding to that repeater antenna. One or more receive circuits including a receive antenna receive power when they are disposed in one of the coupling mode regions corresponding to that repeater antenna.

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Номер записи: 59
03-02-2022 дата публикации

FOREIGN SUBSTANCE DETECTION DEVICE, ELECTRIC POWER TRANSMISSION DEVICE, ELECTRIC POWER RECEPTION DEVICE, AND ELECTRIC POWER TRANSMISSION SYSTEM

Номер: US20220037931A1
Автор: GOTANI Akira
Принадлежит: TDK Corporation

In a case in which an excess sensor which is a sensor in which the value for comparison exceeds the threshold value is present in one of the consecutive comparison processes, the detector determines that a foreign substance is present when the number of times of excess, which is the number of times at which the value for comparison exceeds the threshold value in the excess sensor reaches the first number of times. In a case in which the excess sensors of which the number is a first count that is more than one are present in one of the consecutive comparison processes, the detector determines that the foreign substance is present when the number of times of excess in each of the excess sensors of which the number is the first count reaches the second number of times, which is less than the first number of times. 1. A foreign substance detection device comprising:a plurality of sensors; anda detector that repeatedly executes consecutive comparison processes in which individual comparison processes of comparing values for comparison based on output values from the sensors and a threshold value are executed in predetermined order for the plurality of sensors, and that determines presence or absence of a foreign substance based on comparison results of the individual comparison processes,wherein in a case in which an excess sensor, among the plurality of sensors, which is a sensor in which the value for comparison exceeds the threshold value is present in one of the consecutive comparison processes, the detector determines that the foreign substance is present when a number of times of excess, which is a number of times at which the value for comparison exceeds the threshold value in the excess sensor reaches a first number of times; and in a case in which the excess sensors of which a number is a first count that is more than one are present in one of the consecutive comparison processes, the detector determines that the foreign substance is present when the number of ...

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Номер записи: 60
03-02-2022 дата публикации

FOREIGN SUBSTANCE DETECTION DEVICE, ELECTRIC POWER TRANSMISSION DEVICE, ELECTRIC POWER RECEPTION DEVICE, AND ELECTRIC POWER TRANSMISSION SYSTEM

Номер: US20220037932A1
Автор: GOTANI Akira
Принадлежит: TDK Corporation

The detector of a foreign substance detection device determines the presence or absence of a foreign substance on the basis of the results of comparison between a value for comparison, based on an output value from a sensor, and threshold values. The threshold values include a first threshold value and a second threshold value that is greater than the first threshold value. The detector determines that the foreign substance is present when the number of times at which the value for comparison exceeds the first threshold value reaches the first number of times, and determines that the foreign substance is present when the number of times at which the value for comparison exceeds the second threshold value reaches the second number of times smaller than the first number of times. 1. A foreign substance detection device comprising:a sensor; anda detector that determines presence or absence of a foreign substance based on results of comparison between a value for comparison, based on an output value from the sensor, and threshold values, whereinthe threshold values comprise a first threshold value and a second threshold value that is greater than the first threshold value, andthe detector determines that the foreign substance is present when a number of times at which the value for comparison exceeds the first threshold value reaches a first number of times, and determines that the foreign substance is present when a number of times at which the value for comparison exceeds the second threshold value reaches a second number of times smaller than the first number of times.2. The foreign substance detection device according to claim 1 , comprising a plurality of the sensors claim 1 , whereinthe detector executes consecutive comparison processes in which individual comparison processes of comparing the value for comparison and the threshold values for one of the sensors are executed in predetermined order for the plurality of sensors, andwhen the value for comparison in a ...

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Номер записи: 61
03-02-2022 дата публикации

Low power object detection in multi-coil wireless charging systems and related systems, methods, and devices

Номер: US20220037933A1
Автор: Alex Dumais, Santosh Bhandarkar
Принадлежит: Microchip Technology Inc

Object detection for wireless power transmitters and related systems, methods, and devices are disclosed. A controller for a wireless power transmitter is configured to receive a measurement voltage potential responsive to a tank circuit signal at a tank circuit, provide an alternating current (AC) signal to each of the plurality of transmit coils one at a time, and determine at least one of a resonant frequency and a quality factor (Q-factor) of the tank circuit responsive to each selected transmit coil of the plurality of transmit coils. The controller is also configured to select a transmit coil to use to transmit wireless power to a receive coil of a wireless power receiver responsive to the determined at least one of the resonant frequency and the Q-factor for each transmit coil of the plurality of transmit coils.

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Номер записи: 62
03-02-2022 дата публикации

Wireless Power Charging

Номер: US20220037935A1
Автор: MEHAS Gustavo
Принадлежит:

A current sensing circuit and a minimum operating frequency for a wireless power transmission system is presented. A method of measuring current through a wireless power transmit coil, includes receiving a signal from a switching circuit into a sampling circuit; filtering the sampled signal from the sampling circuit; biasing the filtered sampled signal, wherein the biasing occurs only when the sampling circuit is active; and amplifying the biased signal to provide a transmit coil current signal. A method of measuring current through a wireless power transmit coil, includes receiving a signal from a switching circuit into a sampling circuit; filtering the sampled signal from the sampling circuit; biasing the filtered sampled signal, wherein the biasing occurs only when the sampling circuit is active; and amplifying the biased signal to provide a transmit coil current signal. 1. A wireless power transmitter , comprising:an inverter driver that includes series coupled MOSFET transistors coupled between a voltage and a ground, gates of the series coupled MOSFET transistors being driven by gate control signals, the inverter driver configured to drive current through a transmit coil, the transmit coil being coupled to a switching node that is driven by the series coupled MOSFET transistors of the inverter driver; a sampling circuit coupled to receive the signal from the switching node when the sampling circuit is turned on according to a control signal coupled to control the sampling circuit,', 'an amplifier coupled to receive a sampled signal from the sampling circuit when the sampling circuit is turned on,', 'a filter coupled to the sampling circuit to filter the sampled signal; and', 'a bias circuit coupled to bias the sampled signal at the amplifier, the bias circuit being coupled to receive the control signal, and wherein the bias circuit is turned on when the sampling circuit is turned on and is turned off when the sampling circuit is turned off according to the ...

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Номер записи: 63
03-02-2022 дата публикации

DEVICE AND METHOD FOR WIRELESS POWER TRANSFER

Номер: US20220037936A1
Автор: ETTES WILHELMUS GERARDUS MARIA, VAN VUGT HENRICUS ANTONIUS GERARDUS, VELTMAN EDDY GERRIT
Принадлежит:

A power transfer device is a power transmitter () or a power receiver () conducting power transfer using an electromagnetic power transfer signal employing a repeating time frame comprising a power transfer time interval and an object detection time interval. A power transfer circuit () comprises a power transfer coil () receiving or generating the power transfer signal during the power transfer time intervals. A communicator () communicates with the other device via an electromagnetic communication signal. A communication resonance circuit () comprises a communication antenna () for transmitting or receiving the electromagnetic communication signal. During the communication, the communication resonance circuit () provides a resonance at a first resonance frequency to the communicator (). A controller () adapts the communication resonance circuit to not provide the resonance at the first resonance frequency to the communicator during object detection time intervals. The approach may provide improved detection of resonance objects, such as smart cards (e.g. NFC cards). 1. A power transmitter device comprising: wherein the power transfer circuit comprises a power transfer coil,', 'wherein the power transfer coil is arranged to generate a power transfer signal during at least one power transfer interval(s),', 'wherein the at least one power transfer interval(s) is a portion of at least one repeating frame(s),', 'wherein the at least one repeating frame(s) comprises the at least one power transfer interval(s) and at least one object detection interval(s);, 'a power transfer circuit,'}a communicator circuit, wherein the communicator circuit is arranged to communicate with a power receiver via a communication signal; wherein the communication resonance circuit comprising a communication antenna,', 'wherein the communication antenna is arranged to transmit and receive the communication signal,', 'wherein the communication resonance circuit is arranged to provide a ...

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Номер записи: 64
16-01-2020 дата публикации

WIRELESS POWER TRANSMITTER AND RECEIVER

Номер: US20200018868A1
Автор: JR. Thomas J., Kagle Jonathan Charles, Nugent
Принадлежит:

Embodiments are directed towards a multi-stage wireless power transmission system that includes a transmitting unit and a receiving unit. The transmitting unit transmits a power beam to the receiving unit, which converts the power beam into local electrical power and provides it to a personal electronic device without a corded connection between the receiving unit and a mains power supply. The transmitting unit includes a light-based transmitter to generate and transmit a power beam towards the receiving unit. The receiving unit includes a receiver to receive at least a portion of the power beam and to convert the received power beam into local electrical power. The receiving unit also includes a power output unit to provide the received local power to a personal electronic device when the personal electronic device, which is separable from the receiving unit, is electrically coupled to the power output unit. 1. A system , comprising: a light-based transmitter to generate and transmit a power beam;', 'a controller to manage transmission of the power beam by the light-based transmitter; and, 'a transmitting unit, the transmitting unit including a light-based receiver to receive at least a portion of the power beam and to convert the received portion of the power beam into local electrical power, wherein the local electrical power is local to the non-stationary receiving unit;', 'a power storage system to store the local electrical power; and', 'a power output unit to provide the local electrical power from the power storage system to a personal electronic device when the personal electronic device is electrically coupled to the power output unit, wherein the personal electronic device is separable from the non-stationary receiving unit., 'a non-stationary receiving unit that is remote from the light-based transmitter, the non-stationary receiving unit including2. A system according to claim 1 , wherein the power output unit of the non-stationary receiving unit ...

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Номер записи: 65
18-01-2018 дата публикации

System And Method For Wireless Intercommunication And Power Delivery

Номер: US20180019622A1
Автор: Chen Michael
Принадлежит:

A wireless signal may supply a wireless power signal to a device to power the device for an authentication. If the device is authenticated, the wireless signal may be adjusted to provide power to the device. If the device is not authenticated, the wireless signal may be adjusted to avoid providing power to the device. 1. A method comprising:supplying a wireless signal to supply power to a device to allow power for authentication;authenticating the device; andadjusting the wireless signal to power the device2. The method of claim 1 , wherein the wireless signal is spatially adjusted.3. The method of claim 1 , wherein the wireless signal is temporally adjusted.4. The method of claim 1 , wherein device does not have a dedicated power supply.5. The method of claim 1 , further comprising providing a sweeping wireless signal to detect devices to power.6. The method of claim 1 , wherein the wireless signal is adjusted to provide the power to the device for authentication.7. The method of claim 1 , wherein the supplying and adjusting are performed at a wireless access point.8. The method of claim 5 , wherein the device intercommunicates with the wireless access point.9. A method comprising:receiving, at a device, wireless power from a wireless access point to power authentication of the device;authenticating the device using the received power; andreceiving power from the wireless access point for operation.10. The method of claim 9 , wherein the device does not have a power supply.11. The method of claim 10 , further comprising:transmitting, at the device, an indication that power is needed.12. A method comprising:providing, at a computing system, a signal to a device;receiving, at the computing system, location information from the device; andadjusting, at the computing system, signal to the device based on location info.13. The method of claim 12 , wherein the signal is spatially adjusted.14. The method of claim 12 , wherein the signal is temporally adjusted.15. The ...

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Номер записи: 66
17-01-2019 дата публикации

Wireless Charging Device

Номер: US20190020211A1
Автор: Asaf MANOVA-ELSSIBONY
Принадлежит: Humavox Ltd

A wireless charging device comprises a transmitter coupled to at least one transmitting antenna and operable to cause the at least one transmitting antenna to emit electromagnetic radiation; a conductive structure adapted to confine the electromagnetic radiation to a charging zone; and a detector for detecting a degree of impedance mismatch between the transmitter and the at least one transmitting antenna. A receiver for use with the wireless charging device and a wireless charging system are also disclosed.

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Номер записи: 67
17-01-2019 дата публикации

INDUCTIVE POWER TRANSFER

Номер: US20190020221A1
Автор: Louis Jeffrey Douglas
Принадлежит:

A method comprising determining a level of control viability for a inductive power transfer system within a predetermined control range; and adjusting the reactance of the inductive power transfer system if the level of control viability within the predetermined control range is below a threshold. 1. A method comprising:determining a level of control viability for an inductive power transfer system within a predetermined control range; andadjusting the reactance of the inductive power transfer system if the level of control viability within the predetermined control range is below a threshold.2. The method in wherein the predetermined control range is a frequency range and the level of control viability relates to a frequency control function based on the system gain.3. The method in further comprisingregulating a transfer of power between an inductive power transmitter and an inductive power receiver of the inductive power transfer system by adjusting the frequency of a magnetic field coupled to the transmitter and the receiver within the predetermined frequency control range.4. The method of wherein the level of control viability being below the threshold corresponds to a coil current through a transmitting or receiving coil of the system exceeding a predetermined level of current to permeability of a permeable material associated with the coil.5. The method of claim 4 , wherein coil current being above the predetermined level of current to permeability of a permeable material associated with the coil is determined when a load current of an inductive power receiver is measured above a permeable material set threshold.6. The method of wherein adjusting the reactance of the inductive power transfer system causes the frequency control function to shift lower in frequency.7. The method in wherein the level of control viability depends on whether the control function is monotonic with the predetermined control range.8. The method in wherein the control function is ...

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Номер записи: 68
16-01-2020 дата публикации

SYSTEMS AND METHODS OF OBJECT DETECTION IN WIRELESS POWER CHARGING SYSTEMS

Номер: US20200021128A1
Автор: Bell Douglas, Leabman Michael A.
Принадлежит:

Systems and methods for wireless power transmission based on object identification are provided. A radio frequency wireless power transmitter is in communication with a video camera for capturing image data (e.g., a visual pattern) of at least a portion of a transmission field of the radio frequency wireless power transmitter. A processor of the radio frequency wireless power transmitter is configured to identify an object when the visual pattern matches a pre-stored visual pattern representing the object, and control transmission of one or more radio frequency power transmission waves to a receiving electronic device based on a location of the identified object, wherein the receiving electronic device uses the one or more radio frequency power transmission waves to power or to charge the receiving electronic device. 1. (canceled)2. A system for wireless power transmission , comprising:a radio frequency wireless power transmitter that is in communication with a video camera for capturing image data of at least a portion of a transmission field of the radio frequency wireless power transmitter, wherein the image data comprises a series of image frames; and detect motion of an object towards the transmission field by applying motion tracking analysis on the series of image frames; and', 'send instructions to cause adjustments to transmission of one or more radio frequency power transmission waves by the radio frequency wireless power transmitter to a receiving electronic device based on the motion of the object, wherein the receiving electronic device uses the one or more radio frequency power transmission waves to power or to charge a power source used by the receiving electronic device., 'one or more processors of the radio frequency wireless power transmitter configured to3. The system of claim 2 , wherein the video camera is a thermal imaging camera claim 2 , the image data is thermal imaging data captured by the thermal imaging camera claim 2 , and the one or ...

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Номер записи: 69
16-01-2020 дата публикации

WIRELESS POWER TRANSMITTER, ELECTRONIC DEVICE RECEIVING POWER WIRELESSLY, AND METHOD FOR OPERATING SAME

Номер: US20200021138A1
Автор: Kim Chang-yeong, Kwon Sang-Wook, LEE Joon-hyun, Park Jae-Hyun, PARK Sung-bum, YEO Sung-Ku
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A wireless power transmitter according to various embodiments of the present invention can comprise a plurality of patch antennas, a coil, and a processor. The processor can control such that an electronic device is detected, the plurality of patch antennas and/or the coil is selected as a power transmission circuit for transmitting power for charging the electronic device, and power is transmitted by means of the plurality of patch antennas and/or the coil in accordance with the selection. 1. A wireless power transmitter comprising:multiple patch antennas;a coil; anda processor, wherein the processor is configured to control to detect an electronic device, select at least one of the coil or the multiple patch antennas, as a power transmission circuit to transmit power for charging the electronic device, and transmit the power through at least one of the coil or the multiple patch antennas according to the selection.2. The wireless power transmitter of claim 1 , wherein the processor is configured to determine a distance between the wireless power transmitter and the electronic device claim 1 , and select claim 1 , on the basis of the distance claim 1 , at least one of the coil or the multiple patch antennas claim 1 , as a power transmission circuit to transmit power for charging the electronic device.3. The wireless power transmitter of claim 2 , wherein the processor is configured to select claim 2 , when the distance exceeds a threshold distance claim 2 , the multiple patch antennas as the power transmission circuit to transmit power for charging the electronic device claim 2 , or select claim 2 , when the distance is equal to or less than the threshold distance claim 2 , the coil as the power transmission circuit to transmit power for charging the electronic device.4. The wireless power transmitter of claim 3 , wherein the processor is configured to select claim 3 , using the predesignated threshold distance claim 3 , the power transmission circuit to transmit ...

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Номер записи: 70
16-01-2020 дата публикации

METHOD FOR WIRELESS ENERGY TRANSMISSION FROM AN ENERGY TRANSMISSION DEVICE TO A CONSUMER AND WIRELESS ENERGY TRANSMISSION DEVICE FOR CARRYING OUT THE METHOD

Номер: US20200021143A1
Автор: Gonda Martin, Krupezevic Dragan, MACK Juergen
Принадлежит:

A method is provided for a wireless, in particular inductive, energy transmission from an energy transmission device to a consumer, and in at least one method task, an interruption of the energy transmission from the energy transmission device to the consumer takes place in conjunction with a foreign object detection. The method provides that a cycle time of the method, and/or a duration and/or frequency of the foreign object detection is/are adapted in at least one method task as a function of a characteristic energy transmission variable of the wireless energy transmission. 120-. (canceled)21. A method for a wireless energy transmission from an energy transmission device to a consumer , the method comprising:performing an interruption of the energy transmission from the energy transmission device to the consumer in conjunction with a foreign object detection; andadapting a cycle time of the method, and/or a duration and/or frequency of the foreign object detection as a function of a characteristic energy transmission variable of the wireless energy transmission.22. The method of claim 21 , wherein in the adapting claim 21 , a characteristic precision variable claim 21 , in particular a number of discrete frequency points and/or a number of frequency sweep cycles of the foreign object detection claim 21 , is adapted as a function of the characteristic energy transmission variable of the wireless energy transmission.23. The method of claim 22 , wherein it is differentiated between a standard foreign object detection claim 22 , in particular at a cycle time of 1 to 10 seconds claim 22 , and a rapid foreign object detection claim 22 , in particular at a cycle time of less than 10 milliseconds claim 22 , as a function of the number of discrete frequency points and/or the number of frequency sweep cycles.24. The method of claim 23 , wherein the foreign object detection is able to differentiate between at least a standby mode and an energy transmission mode of the ...

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Номер записи: 71
16-01-2020 дата публикации

POWER SUPPLY APPARATUS, POWER SUPPLY METHOD, AND RECORDING MEDIUM

Номер: US20200021335A1
Автор: NAKANO Katsuya, Tateno Marie, Tsukamoto Nobuyuki
Принадлежит:

A power supply apparatus includes a power supply unit configured to wirelessly supply power to an electronic apparatus, a communication unit configured to communicate with the electronic apparatus, and a control unit configured to perform control whether to supply power to the electronic apparatus according to whether the electronic apparatus is capable of updating information about the electronic apparatus. 1. A power supply apparatus comprising:a power supply interface;a communication interface;a processor, wherein the processor performs the following processes:controlling the communication interface to establish communication with an electronic apparatus;controlling the communication interface to receive power receiving status information about the electronic apparatus from the electronic apparatus before controlling the power supply interface to perform a power supply process for supplying a power to the electronic apparatus via the power supply interface, wherein output of the power is controlled based on power receiving status data in the power supply process;determining, based on the received information, whether the electronic apparatus is capable of detecting the power receiving status data and providing the power receiving status data to the power supply apparatus;performing the power supply process in a case where the electronic apparatus is capable of detecting the power receiving status data and providing the power receiving status data to the power supply apparatus; andnot performing the power supply process in a case where the electronic apparatus is not capable of detecting the power receiving status data and providing the power receiving status data to the power supply apparatus.2. The power supply apparatus according to claim 1 , wherein the processor further performs a following process:in a case where the electronic apparatus is not capable of detecting the power receiving status data and providing the power receiving status data to the power ...

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Номер записи: 72
10-02-2022 дата публикации

Extended-Range Positioning System Based on Foreign-Object Detection

Номер: US20220041072A1
Автор: Daetwyler Andreas, Fischer Marcel, SIEBER Lukas
Принадлежит: WITRICITY CORPORATION

Systems and methods are described for an extended-range positioning system based on foreign-object detection (FOD). In particular, a power-transfer apparatus is disclosed that includes a coil and a foreign-object-detection (FOD) system. The coil is configured to generate a magnetic field based on an electric current running through the coil for transferring power to a receiver device. the FOD system includes a plurality of FOD sense loops, FOD circuitry, and active-beacon receive circuitry. The FOD sense loops detect metal objects within the magnetic field based on changes to an electrical characteristic(s) of one or more of the FOD sense loops. The FOD circuitry processes a modulation pattern of the electrical characteristic(s) of the one or more FOD sense loops and provides first positioning information. The active-beacon receive circuitry processes induced voltage in at least two sense loops to provide second positioning information. 120-. (canceled)21. A power-transfer apparatus comprising:a coil configured to generate a magnetic field based on an electric current running through the coil for transferring power to a receiver device; and the detection system further including', 'foreign object detection circuitry configured to detect metal objects within the magnetic field generated by the coil based on changes to one or more electrical characteristics of one or more sense loops of the plurality of sense loops;', 'passive-beacon position detection circuitry configured to process a modulation pattern of the one or more electrical characteristics of the one or more sense loops and provide first positioning information; and', 'active-beacon position detection circuitry configured to process induced voltage in at least two sense loops to provide second positioning information., 'a detection system including a plurality of sense loops;'}22. The power-transfer apparatus as described in claim 21 , wherein the detection system is configured to provide the first ...

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Номер записи: 73
26-01-2017 дата публикации

FOREIGN OBJECT DETECTION IN WIRELESS ENERGY TRANSFER SYSTEMS

Номер: US20170025904A1
Автор: Buenrostro Christopher, Hall Katherine L., Katz Noam, Kesler Morris P., Kurs Andre B., Lou Herbert Toby, Roy Arunanshu Mohan, Verghese Simon
Принадлежит:

The disclosure features apparatus, methods, and systems for wireless power transfer that include a power source featuring at least one resonator, a power receiver featuring at least one resonator, a first detector featuring one or more loops of conductive material and configured to generate an electrical signal based on a magnetic field between the power source and the power receiver, a second detector featuring conductive material, and control electronics coupled to the first and second detectors, where during operation, the control electronics are configured to measure the electrical signal of the first detector and compare the measured electrical signal of the first detector to baseline electrical information for the first detector to determine information about whether debris is positioned between the power source and the power receiver. 1a power source comprising at least one resonator;a power receiver comprising at least one resonator, wherein the power receiver is configured to receive electrical power transmitted wirelessly by the power source;a first detector comprising one or more loops of conductive material, wherein the first detector is configured to generate an electrical signal based on a magnetic field between the power source and the power receiver;a second detector comprising conductive material; and measure the electrical signal of the first detector;', 'compare the measured electrical signal of the first detector to baseline electrical information for the first detector to determine information about whether debris is positioned between the power source and the power receiver;', 'measure an electrical signal of the second detector, wherein the electrical signal of the second detector is related to a capacitance of the second detector; and', 'compare the measured electrical signal of the second detector to baseline electrical information for the second detector to determine information about whether a living object is positioned between the power ...

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Номер записи: 74
26-01-2017 дата публикации

Method of automatic charging

Номер: US20170025905A1
Автор: Pan Zhengmin Benjamin, Zhang Xiaoyu
Принадлежит: AAC Technologies Pte. Ltd.

A method of realizing low battery fully automatic charging in communication equipment, includes the following steps: a) Providing a quantity of electricity detector, when quantity of electricity detector detects that the quantity of electricity of mobile communication equipment is lower than set threshold, step (b) should be started; b) the said mobile communication equipment searching and positioning one external charging device to positioning the coordinates of mobile communication equipment by taking the position where the external charging device is placed as the origin of coordinates; c) Starting the mobile communication terminal to move towards the direction of the external charging device; d) providing an interface set on the mobile communication equipment. Charging of mobile communication equipment is realized through the matching of interface and external charging device. 1. A method of realizing low battery fully automatic charging in communication equipment , including the following steps:a) Providing a quantity of electricity detector, when quantity of electricity detector detects that the quantity of electricity of mobile communication equipment is lower than set threshold, step (b) should be started;b) the said mobile communication equipment searching and positioning one external charging device to positioning the coordinates of mobile communication equipment by taking the position where the external charging device is placed as the origin of coordinates;c) Starting the mobile communication terminal to move towards the direction of the external charging device;d) providing an interface set on the mobile communication equipment; wherein charging of mobile communication equipment is realized through the matching of interface and external charging device.2. A mobile communication equipment , including:a housing having an internal receiving space used for receiving and protecting internal structure of the mobile communication equipment.a mainboard and a ...

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Номер записи: 75
24-04-2014 дата публикации

Wireless power transmitter and receiver, and method for transmitting emergency information in a wireless charging network

Номер: US20140111018A1
Автор: Hee-Won Jung, Hyuk-Choon Kwon, Kang-Ho Byun, Kyung-Woo Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and a method are provided for efficiently transmitting emergency information in a wireless charging network. The method includes receiving wireless charging power from a wireless power transmitter; detecting an occurrence of an emergency situation; generating an emergency signal including information of the emergency situation; and transmitting the generated emergency signal to the wireless power transmitter.

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Номер записи: 76
24-04-2014 дата публикации

Wireless power transmitters and receivers, and method for permitting a wireless power receiver by a wireless power transmitter

Номер: US20140111153A1
Автор: Hee-Won Jung, Ho-Dong Kim, Hyuk-Choon Kwon, Kang-Ho Byun, Kyung-Woo Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and method are provided for permitting a wireless power receiver to be charged by a wireless power transmitter. The method includes generating a Power Receiving Unit (PRU) control signal including permission information indicating charging permission for the wireless power receiver; and transmitting the PRU control signal to the wireless power receiver.

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Номер записи: 77
25-01-2018 дата публикации

POWER TRANSMISSION SYSTEM, FOREIGN OBJECT DETECTION DEVICE, AND COIL DEVICE

Номер: US20180026482A1
Автор: ARAKI Jun, ASANO Atsushi, FURIYA Kentarou, Goto Masahiko
Принадлежит: IHI CORPORATION

A foreign object detection device for a coil device including a second coil to transmit power to a first coil wirelessly or receive power from the first coil wirelessly including: a foreign object detection coil configured to be located between the first coil and the second coil; and a cover configured to cover an upper portion of the foreign object detection coil, wherein a top surface of the cover includes at least one inclined surface inclined relative to a coil plane of the second coil, and the inclined surface is inclined downward from a low sensitivity region where detection sensitivity of the foreign object detection coil is relatively lower to a high sensitivity region where the detection sensitivity of the foreign object detection coil is relatively higher. 1. A foreign object detection device for a coil device including a second coil to transmit power to a first coil wirelessly or receive power from the first coil wirelessly , the foreign object detection device comprising:a foreign object detection coil configured to be located between the first coil and the second coil; anda cover configured to cover an upper portion of the foreign object detection coil,wherein a top surface of the cover includes at least one inclined surface inclined relative to a coil plane of the second coil, andthe inclined surface is inclined downward from a low sensitivity region where detection sensitivity of the foreign object detection coil is relatively lower to a high sensitivity region where the detection sensitivity of the foreign object detection coil is relatively higher.2. The foreign object detection device according to claim 1 , whereinthe top surface of the cover includes an end inclined surface inclined downward and extending to an end of the top surface.3. The foreign object detection device according to claim 1 , whereinthe at least one inclined surface includes a plurality of inclined surfaces of directions different from each other.4. The foreign object detection ...

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Номер записи: 78
29-01-2015 дата публикации

Inductive power transfer system and method

Номер: US20150028849A1
Автор: Grant Anthony Covic, John Talbot Boys
Принадлежит: Auckland Uniservices Ltd

Foreign object detection apparatus for an IPT system, includes a control means adapted to detect the presence of a foreign object on or adjacent to an IPT primary pad of the system.

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Номер записи: 79
10-02-2022 дата публикации

Wireless charging method and system

Номер: US20220045555A1
Автор: BIN Li, Jianhong Zeng, Nan Ye
Принадлежит: Delta Electronics Shanghai Co Ltd

A wireless charging method includes: (a) providing a charging device, wherein the charging device includes at least one charging region for a smart device to place thereon, the charging device is configured to charge the smart device when executing a charging task, the charging task includes at least one charging subtask, and the charging device is configured to detect whether there is a detection object on the charging region when executing a detection task, and the detection task includes a plurality of detection subtasks; (b) executing a charging initialization program and a communication initialization program; and (c) executing the plurality of detection subtasks and at least one charging subtask, wherein the at least one charging subtask is interspersed and executed among the plurality of detection subtasks.

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Номер записи: 80
10-02-2022 дата публикации

ELECTRONIC DEVICE AND METHOD FOR TRANSMISSION OF REASON WIRELESS CHARGING IS STOPPING

Номер: US20220045556A1
Автор: CHOI Byungyeol, KIM Yusu, KWON Hyungjun, LEE Juhyang, Lee Wooram, PARK Kyungmin
Принадлежит:

An electronic device may include a display, a power reception circuit, and a processor. The processor may perform wireless charging by receiving power wirelessly from an external electronic device through the power reception circuit, and receive data on one or more reasons to stop wireless charging from the external electronic device during the wireless charging. Also, the processor may transmit acknowledge (ACK) data to the external electronic device in response to receiving the data on the one or more reasons to stop wireless charging, and display, through the display, at least one reason to stop wireless charging included in the data on the one or more reasons to stop wireless charging. Other embodiments are possible. 1. An electronic device comprising:a display;a power reception circuit; anda processor configured to:perform wireless charging by receiving power wirelessly from an external electronic device through the power reception circuit,alternatingly transmit, to the external electronic device during the wireless charging, control error packet (CEP) data for controlling the power received from the external electronic device and received power packet (RPP) data for indicating the power received from the external electronic device,receive data on one or more reasons to stop wireless charging from the external electronic device during the wireless charging, anda plurality of second values indicating different intervals of power loss caused by a foreign object between the external electronic device and the electronic device.2. The electronic device of claim 1 , wherein the processor is further configured to:use a first frequency for the wireless charging, anduse a same frequency as the first frequency for reception of the data on the one or more reasons to stop wireless charging.3. The electronic device of claim 1 , wherein the processor is further configured to:transmit acknowledge (ACK) data to the external electronic device in response to receiving the data ...

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Номер записи: 81
24-01-2019 дата публикации

POWER TRANSMITTING APPARATUS, POWER RECEIVING APPARATUS, CONTROL METHODS THEREOF, AND PROGRAM

Номер: US20190027940A1
Автор: Eguchi Tadashi, Takahashi Naoto
Принадлежит:

A power transmitting apparatus that transmits power to a power receiving apparatus executes intermittent wireless transmission of power. The power transmitting apparatus operates according to one of a first power transmitting method including detecting a signal load-modulated by the power receiving apparatus using an ID in response to the transmitted power during the intermittent transmission and a second power transmitting method including transmitting the power having modulated the power according to an ID determined in advance so that the power receiving apparatus detects the ID determined in advance. 150.-. (canceled)51. A power transmitting apparatus that transmits power to a power receiving apparatus , the power transmitting apparatus comprising:a power transmission unit configured to execute first wireless power transmission intermittently using a first antenna, second wireless power transmission having a power transmission period longer than a power transmission period of the first wireless power transmission, which is a period that the power transmission unit transmit power in the first wireless power transmission, using the first antenna and third wireless power transmission having larger amount of power than amount of power of the first wireless power transmission and amount of power of the second wireless power transmission using the first antenna;a detection unit configured to detect an object; anda communication unit configured to execute, using a second antenna different from the first antenna, communication with the power receiving apparatus,wherein the power transmission unit starts the second wireless power transmission in a case where the detection unit detects the object while the first power transmission is executed, andwherein, in a case where the object is the power receiving apparatus, the power transmission unit executes the third wireless power transmission based on the communication by the communication unit, after the second wireless ...

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Номер записи: 82
24-01-2019 дата публикации

WIRELESS POWER TRANSFER DEVICE

Номер: US20190027970A1
Автор: ICHIKAWA Katsuei, KAWAMAE Osamu
Принадлежит:

The present invention improves charging efficiency in a wireless power transfer device. A wireless power transfer device wirelessly transfers power by using inductive coupling to a charging target device placed in the vicinity of a charging pad. The wireless power transfer device includes an amplifier for performing power amplification, a series resonant circuit constituted by a resonant capacitor and a power transfer coil, and a foreign material detection unit for detecting a non-charging device, which is not a charging target, placed in the vicinity of the charging pad. The foreign material detection unit is constituted by a pick-up coil, bandpass filters, detector circuits and a control circuit. The foreign material detection unit detects an IC card which is the non-charging device by a signal component emitted through inductive coupling with the power transfer coil from the device placed in the vicinity of the charging pad when transferring power. 1. A wireless power transfer device for wirelessly transferring power by using inductive coupling to a charging target device placed in the vicinity of a charging pad , the wireless power transfer device comprising:an amplifier for performing power amplification;a series resonant circuit constituted by a resonant capacitor and a power transfer coil; anda foreign material detector for detecting a non-charging device, which is not a charging target, placed in the vicinity of the charging pad,wherein the foreign material detector detects the non-charging device by a signal component emitted through inductive coupling with the power transfer coil from the device placed in the vicinity of the charging pad when transferring power.2. The wireless power transfer device according to claim 1 ,wherein the foreign material detector comprises:a signal detector for detecting the signal component emitted from the device placed in the vicinity of the charging pad;a first filter for allowing a signal having a predetermined frequency ...

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Номер записи: 83
24-01-2019 дата публикации

FOREIGN OBJECT DETECTION APPPARATUS AND WIRELESS CHARGING SYSTEM INCLUDING THE SAME

Номер: US20190027973A1
Автор: BAEK Jongseok, CHO Yongnam, CHOI Bohwan, LEE Byunghyuk
Принадлежит: LG ELECTRONICS INC.

A foreign object detection apparatus including a plurality of object sensing devices positioned between a transmission pad and a reception pad of a wireless charging system; and a detection circuit configured to determine whether a foreign object is present between the transmission pad and the reception pad based on data received from the plurality of object sensing devices. Further, each of the plurality of object sensing devices includes a first coil unit wound with a first coil in a first direction, and a second coil unit wound with a second coil in a second direction different from the first direction; and the first coil unit and the second coil unit overlap each other. 1. A foreign object detection apparatus , comprising:a plurality of object sensing devices positioned between a transmission pad and a reception pad of a wireless charging system; anda detection circuit configured to determine whether a foreign object is present between the transmission pad and the reception pad based on data received from the plurality of object sensing devices,wherein each of the plurality of object sensing devices includesa first coil unit wound with a first coil in a first direction, anda second coil unit wound with a second coil in a second direction different from the first direction, andwherein the first coil unit and the second coil unit overlap each other.2. The foreign object detection apparatus of claim 1 , wherein the first coil includes a larger number of windings than the second coil.3. The foreign object detection apparatus of claim 1 , wherein a first shape defined by windings of the first coil is smaller than a second shape defined by windings of the second coil.4. The foreign object detection apparatus of claim 3 , wherein a number of windings of the first coil is determined based on a value obtained by multiplying a ratio between an area of the first shape and an area of the second shape by a number of windings of the second coil.5. The foreign object detection ...

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Номер записи: 84
24-01-2019 дата публикации

SYSTEM AND METHOD OF DETERMINING THE LOCATION OF AN OCCUPIED PHYSICAL SPACE

Номер: US20190027975A1
Автор: Plasmans Johannes Barnardus, VAN DER VOORT Ronald Hans
Принадлежит:

The application relates to a method and system for determining the occupancy of one or more physical spaces. The system comprises one or more charging devices configured to be arranged at the one or more physical spaces, each of the charging devices comprising a charging unit configured for wireless power transfer to a mobile telecommunication device when the mobile telecommunication device is placed in close proximity to the charging unit, a localisation unit configured to broadcast an information signal comprising identifying information of the localisation unit to the mobile telecommunication device; and a controller configured to determine the location of an occupied physical space upon detection of the charging of the mobile telecommunication device, wherein the location is determined based on the broadcast signal. 1. System for determining the location of one or more occupied or unoccupied physical spaces , the system comprising:one or more charging devices configured to be arranged at the one or more physical spaces, each of the charging devices comprising a charging unit configured for wireless power transfer to a mobile telecommunication device when the mobile telecommunication device is coupled to the charging unit;one or more localisation units associated with each of the charging devices, wherein each of the localisation unit is configured to broadcast an information signal comprising identifying information of the localisation unit to the mobile telecommunication device;a controller configured to determine the location of an occupied physical space upon detection of the coupling between the mobile telecommunication device and the charging device, wherein the location is determined based on the broadcast signal received by the mobile telecommunication device.2. System as claimed in claim 1 , comprising a mobile telecommunication device claim 1 , wherein the controller claim 1 , for instance the controller of the mobile telecommunication device claim 1 , ...

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Номер записи: 85
24-01-2019 дата публикации

Inductive power transmitter

Номер: US20190028148A1
Автор: Jeffrey Douglas Louis
Принадлежит: Apple Inc

An inductive power transmitter comprising a transmission circuit having a coil, the transmission circuit tuned, adapted or optimised at or about a first frequency for inductive power transfer or object detection; an inverter operable to drive the transmission circuit at the first frequency; and a controller arranged to control the inverter to drive the transmission circuit at a second higher frequency, and to modulate a signal at the second higher frequency according to a predetermined handshake signal in order to generate a response from a predetermined non-authorised device proximate the coil.

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Номер записи: 86
23-01-2020 дата публикации

Current Sense Apparatus and Method

Номер: US20200028381A1
Автор: Huang Jinbiao, Liu Sichao, Yuan Dongdong
Принадлежит:

A device includes a positive current sense amplifier having two inputs connected to a drain and a source of a power switch respectively through a plurality of positive current sense switches, and a negative current sense amplifier having two inputs connected to the drain and the source of the power switch respectively through a plurality of negative current sense switches. 1. A device comprising:a positive current sense amplifier having two inputs connected to a drain and a source of a power switch respectively through a plurality of positive current sense switches; anda negative current sense amplifier having two inputs connected to the drain and the source of the power switch respectively through a plurality of negative current sense switches.2. The device of claim 1 , further comprising:a current sense processing apparatus connected to the positive current sense amplifier and the negative current sense amplifier respectively.3. The device of claim 2 , wherein the current sense processing apparatus comprises a first current mirror claim 2 , a second current mirror and a third current mirror claim 2 , and wherein:the first current mirror is configured to convert an output signal of the positive current sense amplifier into a first sink current;the second current mirror is configured to convert an output signal of the negative current sense amplifier into a second sink current; andthe third current mirror is configured to convert the first sink current into a first source current.4. The device of claim 3 , wherein:the first current mirror is connected to an output of the positive current sense amplifier through a first p-type transistor; andthe second current mirror is connected to an output of the negative current sense amplifier through a second p-type transistor.5. The device of claim 3 , wherein:the first source current and the second sink current are fed into a filter connected to a common node of the second current mirror and the third current mirror.6. The ...

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Номер записи: 87
30-01-2020 дата публикации

Power Transfer Device

Номер: US20200031243A1
Автор: Tanaka Ryouhei
Принадлежит:

A power transfer device comprises a power transfer coil, a case that has a surface extending along a direction perpendicular to an axial direction of the power transfer coil and stores the power transfer coil, a rotating shaft rotatable about the shaft that extends in the axial direction of the power transfer coil at a central portion in a radial direction of the power transfer coil and has one end penetrating the surface and protruding outward through the surface and a foreign object remover that projects outwardly from the one end of the rotating shaft in a radial direction of the rotating shaft and moves on the surface. 1. A power transfer device , comprising:a power transfer coil;a case that has a surface extending along a direction perpendicular to an axial direction of the power transfer coil and stores the power transfer coil;a rotating shaft rotatable about the shaft that extends in the axial direction of the power transfer coil at a central portion in a radial direction of the power transfer coil and has one end penetrating the surface and protruding outward through the surface; anda foreign object remover that projects outwardly from the one end of the rotating shaft in a radial direction of the rotating shaft and moves on the surface.2. The power transfer device according to claim 1 , wherein in the radial direction of the rotating shaft claim 1 , a length of the foreign object remover is greater than a radius of the power transfer coil.3. The power transfer device according to claim 2 , wherein in the radial direction of the rotating shaft claim 2 , the length of the foreign object remover is greater than a length between a center of the rotating shaft and an edge of the surface.4. The power transfer device according to claim 1 , wherein a motor providing the rotating shaft with power is disposed away from the surface and close to the other end of the rotating shaft.5. The power transfer device according to claim 1 , wherein a plurality of the foreign ...

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Номер записи: 88
30-01-2020 дата публикации

Power Transfer Device, Control Method and Recording Medium

Номер: US20200031244A1
Автор: Tanaka Ryouhei
Принадлежит:

A power transfer device comprises a power transfer coil; a case that has a surface extending along a direction perpendicular to an axial direction of the power transfer coil and stores the power transfer coil; a rotating shaft rotatable about the shaft that extends in the axial direction of the power transfer coil at a central portion in a radial direction of the power transfer coil and has an end penetrating the surface and protruding outward through the surface; a foreign object remover that projects outwardly from the end of the rotating shaft in a radial direction of the rotating shaft and moves on the surface; a driving source that provides the rotating shaft with power; and a processor that determines whether or not a vehicle is present. The driving source is driven if the processor determines that the vehicle is present. 1. A power transfer device , comprising:a power transfer coil;a case that has a surface extending along a direction perpendicular to an axial direction of the power transfer coil and stores the power transfer coil;a rotating shaft rotatable about the shaft that extends in the axial direction of the power transfer coil at a central portion in a radial direction of the power transfer coil and has an end penetrating the surface and protruding outward through the surface;a foreign object remover that projects outwardly from the end of the rotating shaft in a radial direction of the rotating shaft and moves on the surface;a driving source that provides the rotating shaft with power; anda processor that determines whether or not a vehicle is present, whereinthe driving source is driven if the processor determines that the vehicle is present.2. The power transfer device according to claim 1 , further comprising an accepter that accepts power transfer starting operation claim 1 , whereinthe driving source is driven if the processor determines that the vehicle is present, and the accepter accepts a start of power transfer.3. The power transfer device ...

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Номер записи: 89
30-01-2020 дата публикации

Non-Contact Power Supply Device

Номер: US20200031246A1
Автор: Tanaka Ryouhei
Принадлежит:

A non-contact power supply device supplying power in a non-contacting manner to a battery provided in an electric vehicle includes a guide that defines a stopping position of the electric vehicle when the electric vehicle is supplied with power in the non-contacting manner; and a power transmitter that includes a power transmission coil Lt and a housing accommodating the power transmission coil Lt and that transmits power to the electric vehicle stopped at the stopping position from the power transmission coil Lt, wherein the guide includes two guide parts disposed apart from each other in a width direction of the electric vehicle with a space greater than a width of the electric vehicle and a vehicle stopper that is disposed at a far side in a moving direction of the electric vehicle 1. A non-contact power supply device supplying power in a non-contacting manner to a battery provided in an electric vehicle , comprising:a guide that defines a stopping position of the electric vehicle when the electric vehicle is supplied with power in the non-contacting manner; anda power transmitter that includes a power transmission coil and a housing accommodating the power transmission coil and that transmits power to the electric vehicle stopped at the stopping position from the power transmission coil, wherein two guide parts disposed apart from each other in a width direction of the electric vehicle with a space greater than a width of the electric vehicle, and', 'a vehicle stopper that is disposed at a far side in a moving direction of the electric vehicle., 'the guide comprises'}2. The non-contact power supply device according to claim 1 , whereinthe space between the two guide parts in the width direction of the vehicle is made wider at an entrance side than at the far side in the moving direction of the electric vehicle.3. The non-contact power supply device according to claim 1 , whereinthe housing that is disposed between the two guide parts and at a position closer to ...

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Номер записи: 90
02-02-2017 дата публикации

WIRELESS POWER SUPPLY SYSTEM AND POWER RECEIVER

Номер: US20170033605A1
Автор: ARAKI Jun, MURAYAMA Takahiko, Nakamura Toshio
Принадлежит: IHI CORPORATION

A wireless power supply system includes a power transmitter and a power receiver. The power transmitter includes a power-transmitting coil to which AC power of a frequency is input from a power source. The power receiver includes a power-receiving coil magnetically coupled to the power-transmitting coil at a coupling coefficient, and a first power-receiving-side series element coupled in series to the power-receiving coil and having imaginary impedance jZ. In this wireless power supply system, the frequency and the imaginary impedance are determined so that impedance of a power-receiving side seen from the power source is independent of the coupling coefficient when the coupling coefficient changes. 1. A wireless power supply system comprising:a power transmitter; anda power receiver,the power transmitter comprising a power-transmitting coil to which AC power of a frequency is input from a power source, and{'sub': 'S2i', 'the power receiver comprising a power-receiving coil magnetically coupled to the power-transmitting coil at a coupling coefficient, and a first power-receiving-side series element coupled in series to the power-receiving coil and having imaginary impedance jZ,'}wherein the frequency and the imaginary impedance are determined so that impedance of a power-receiving side seen from the power source is independent of the coupling coefficient when the coupling coefficient changes.4. The wireless power supply system according to claim 3 , wherein a variable range of the frequency is determined claim 3 ,a fluctuation range of the coupling coefficient is determined, andthe imaginary impedances of the first power-receiving-side series element and the power-receiving-side parallel element are determined so as to satisfy Formula (1), when the frequency is an upper limit or a lower limit of the variable range and the coupling coefficient is an upper limit or a lower limit of the fluctuation range.5. The wireless power supply system according to claim 4 , ...

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Номер записи: 91
02-02-2017 дата публикации

Wireless power supply coil

Номер: US20170033606A1
Автор: Kengo Maikawa, Satoshi Kubota
Принадлежит: Nissan Motor Co Ltd

A magnetic core 47 to be housed in a coil bobbin 57 is split along a coil-axis intersecting direction Y into a plurality of split magnetic cores 47 a , the coil-axis intersecting direction Y intersecting a coil axis direction X, and a clearance C extending along the coil axis direction X is provided between the plurality of split magnetic cores 47 a . In each clearance C, a protrusion 51 a protruding upward from a core base 51 is inserted and arranged to ensure sufficient rigidity. Providing the clearances C reduces the entire weight of the magnetic core 47 and also ensures a large coil width in the coil-axis intersecting direction Y. By ensuring a large coil width, alignment between a power-transmission-side coil 11 and a power-reception-side coil 13 becomes easier.

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Номер записи: 92
02-02-2017 дата публикации

POWER TRANSMITTING DEVICE AND POWER RECEIVING DEVICE

Номер: US20170033609A1
Автор: Misawa Takahiro, Nakamura Toru, YAMADA Hideaki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A power transmitting device includes a power transmitting coil that forms a magnetic field when an AC voltage is applied thereto and transmits electric power in a non-contact manner to a power receiving coil through the magnetic field, a foreign object detector, a magnetic field detector, and a control device that receives information about a result of detection of a foreign object by the foreign object detector and information about a result of detection of the magnetic field by the magnetic field detector. The control device determines whether there is a foreign object or not based on the result of the detection of a foreign object performed by the foreign object detector during a timing period when the strength of the magnetic field is equal to or lower than a prescribed value. 1. A power transmitting device that transmits electric power in a non-contact manner to a power receiving device provided outside , comprising:a power transmitting coil that forms a magnetic field when an AC voltage is applied thereto, and transmits electric power in a non-contact manner to a power receiving coil of said power receiving device through said magnetic field;a foreign object detector that detects a foreign object located on or in the vicinity of said power transmitting device;a magnetic field detector that detects said magnetic field; anda control device that receives information about a result of the detection of a foreign object by said foreign object detector and information about a result of the detection of said magnetic field by said magnetic field detector,said control device determining whether there is a foreign object or not based on the result of the detection of a foreign object performed by said foreign object detector during a timing period when the strength of said magnetic field is equal to or lower than a prescribed value.2. The power transmitting device according to claim 1 , wherein said magnetic field detector includes a coil where an induced voltage is ...

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Номер записи: 93
02-02-2017 дата публикации

WIRELESS POWER TRANSMITTER AND WIRELESS POWER TRANSMISSION METHOD

Номер: US20170033611A1
Автор: CHO Jae Hyoung, CHO Sang Ho, KANG Chang Soo, PARK Chul Gyun, SHIN Eun Young, SUNG Jae Suk
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

A wireless power transmitter includes a sensor configured to sense an object, a power transmitter configured to wirelessly transmit power to a wireless power receiver, and a controller configured to determine whether the object is the wireless power receiver, and control the power transmitter to wirelessly transmit power to the wireless power receiver upon the object being determined to be the wireless power receiver, wherein the sensor and the power transmitter comprise separate coils. 1. A wireless power transmitter comprising:a sensor configured to sense an object;a power transmitter configured to wirelessly transmit power to a wireless power receiver; anda controller configured to determine whether the object is the wireless power receiver, and control the power transmitter to wirelessly transmit power to the wireless power receiver upon the object being determined to be the wireless power receiver,wherein the sensor and the power transmitter comprise separate coils.2. The wireless power transmitter of claim 1 , wherein the power transmitter is configured to wirelessly transmit the power using a transmitting coil claim 1 , andthe sensor is configured to sense the object coming into proximity therewith using a sensing coil configured to operate regardless of whether the transmitting coil is operating.3. The wireless power transmitter of claim 1 , wherein the sensor is configured to sense the object in proximity therewith claim 1 , while the power transmitter wirelessly transmits power to the wireless power receiver.4. The wireless power transmitter of claim 1 , wherein the sensor is configured to transmit a short beacon signal under control of the controller claim 1 , and sense a change in impedance of the short beacon signal to determine whether an object is coming into proximity therewith.5. The wireless power transmitter of claim 1 , wherein the power transmitter comprises:a first resonator comprising a transmitting coil; anda first power amplifier configured ...

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Номер записи: 94
02-02-2017 дата публикации

POWER RECEPTION APPARATUS, DETERMINATION METHOD, AND PROGRAM

Номер: US20170033613A1
Автор: Takahashi Naoto
Принадлежит:

A power reception apparatus includes a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus, a voltage conversion unit configured to convert the voltage of the power receive by the power reception unit to a voltage with a particular value, a load unit configured to operate with an output from the voltage conversion unit, a first detection unit configured to detect a voltage or a current input to the voltage conversion unit, and a second detection unit configured to detect consumption power of the load unit, a determination unit configured to make a determination, based on a result of a detection performed by the first detection unit and a result of a detection performed by the second detection unit, as to whether there exists a foreign object, which is not a target object to which power is to be transmitted, in a power transmission service area covered by the power transmission apparatus. 1. A power reception apparatus comprising:a power reception unit configured to receive power wirelessly supplied from a power transmission apparatus;a voltage conversion unit configured to convert the voltage of the power receive by the power reception unit to a voltage with a particular value;a load unit configured to operate with an output from the voltage conversion unit;a first detection unit configured to detect a voltage or a current input to the voltage conversion unit;a second detection unit configured to detect consumption power of the load unit; anda determination unit configured to make a determination, based on a result of a detection performed by the first detection unit and a result of a detection performed by the second detection unit, as to whether there exists a foreign object, which is not a target object to which power is to be transmitted, in a power transmission service area covered by the power transmission apparatus.2. The power reception apparatus according to claim 1 , further comprising a notification ...

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Номер записи: 95
02-02-2017 дата публикации

FOREIGN OBJECT DETECTING DEVICE, WIRELESS POWER TRANSMITTING DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM

Номер: US20170033615A1
Автор: Asanuma Kenichi, Kanno Hiroshi, Sakata Tsutomu, YAMAMOTO Atsushi
Принадлежит:

An object detecting device includes a coil array including coils, short-circuit switches connected in parallel with the coils, an oscillator circuit that outputs, to the coils, a voltage including an alternating current component, selection switches connected between the coils and the oscillator circuit, a detecting circuit that detects an object based on a change in a physical value such as voltage, and a control circuit that opens and closes the short-circuit switches and the selection switches. When a first selection switch is closed, a first short-circuit switch, which is connected to the first selection switch, is opened. The other selection switches are opened, and the other short-circuit switches are closed. 1. A foreign object detecting device comprising:a coil array that includes coils;short-circuit switches, each of which is connected in parallel with each of the coils and each of which establishes or breaks an electrical connection between both ends of the coil;selection switches, each of which establishes or breaks an electrical connection between each of the coils and an oscillator circuit;a detecting circuit that detects an amount of change, from a predetermined reference value, in a physical value that changes in accordance with a change in impedance of each of the coils; anda control circuit that opens and closes each of the short-circuit switches and each of the selection switches,wherein the control circuit establishes an electrical connection between a first coil included in the coils and the oscillator circuit by closing a first selection switch included in the selection switches and opens a first short-circuit switch included in the short-circuit switches connected in parallel with the first coil,wherein the control circuit breaks an electrical connection between a second coil included in the coils and the oscillator circuit by opening a second selection switch included in the selection switches and closes a second short-circuit switch included ...

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Номер записи: 96
02-02-2017 дата публикации

Device and Method for the Detection of an Interfering Body in a System for the Inductive Transfer of Energy and a System for the Inductive Transfer of Energy

Номер: US20170033616A1
Автор: Adrianus Johannes Steinfort, Christoph Ludwig, Wolfgang Ludwig
Принадлежит: Bombardier Primove GmbH

The invention relates to a method and an apparatus for detecting at least one interfering body in a system for inductive energy transmission, wherein the system includes at least one primary coil unit, wherein the apparatus includes at least one interfering body detector means, wherein the at least one interfering body detector means includes at least one field coil means and at least one detector coil means which is assigned to the at least one field coil means, wherein the apparatus includes at least one evaluation means, wherein the interfering body is detectable depending on the state of coupling and/or the change in the state of coupling, wherein the apparatus includes at least one compensation means.

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Номер записи: 97
01-02-2018 дата публикации

APPARATUS FOR RECEIVING WIRELESS POWER AND METHOD OF CONTROLLING SAME

Номер: US20180034305A1
Автор: CHO Sung-Joon, HA Young-Mi, LEE Jung-Min, SON Hong-Min
Принадлежит:

A reception device for receiving wireless power may include: a power reception circuit configured to wirelessly receive power from a transmission device, rectify the received power, and output the rectified power; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the rectified power to a system of the reception device; and a control circuit configured to, when an event for changing an input current limit of the charger is detected, gradually change the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value. 1. A reception device for receiving wireless power , the reception device comprising:a power reception circuit configured to wirelessly receive power from a transmission device, rectify the received power, and output the rectified power;a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the rectified power to a system of the reception device; anda control circuit configured to, when an event for changing an input current limit of the charger is detected, gradually change the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value.2. The reception device of claim 1 , wherein claim 1 , when a requested amount of a change in the input current limit of the charger is larger than a preset threshold value claim 1 , the control circuit is configured to gradually change the input current limit of the charger by stepping up or stepping down the input current limit to the one or more intermediary values until the input current limit reaches the predetermined value.3. The reception device of claim 1 , wherein when the event ...

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Номер записи: 98
01-02-2018 дата публикации

INDUCTIVE POWER TRANSMITTER

Номер: US20180034326A1
Автор: ABDOLKHANI Ali
Принадлежит: PowerbyProxi Limited

An inductive power transmitter comprising: at least one power transmitting coil configured to generate an inductive power transfer (IPT) field; and an object detection system configured to detect objects in or adjacent a space occupied by the IPT field when generated; wherein the object detection system is configured to detect a receiver object based on a tag associated with the receiver object. 1. An inductive power transmitter comprising:at least one power transmitting coil configured to generate an inductive power transfer (IPT) field; andan object detection system configured to detect objects in or adjacent a space occupied by the IPT field when generated;wherein the object detection system is configured to detect a receiver object based on a tag associated with the receiver object.2. The transmitter in claim 1 , configured to energise the coil once the object detection system detects a receiver object.3. The transmitter in claim 1 , wherein the tag is a magnet.4. The transmitter in claim 3 , wherein the magnet is a permanent magnet located relative to a receiver coil of the receiver object.5. The transmitter in claim 3 , wherein the magnet is a receiver coil of the receiver object energised with a DC voltage.6. The transmitter in claim 3 , wherein the object detector comprises one or more magnetic switches.7. The transmitter in claim 6 , wherein at least one of the one or more magnetic switches is a Hall Effect switch claim 6 , a Reed switch or a 3D hall effect sensor.8. The transmitter in claim 1 , wherein the tag has a coded reflective surface and the object detector includes photodetectors configured to measure reflected light patterns.9. The transmitter in claim 1 , comprising a plurality of power transmitting coils claim 1 , wherein at least one object detector of the object detection system is located about each power transmitting coil claim 1 , and the transmitter is configured to energise the respective coil based on activation of the respective object ...

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Номер записи: 99
17-02-2022 дата публикации

CONTACTLESS POWER TRANSMISSION SYSTEM FOR TRANSMITTING POWER FROM POWER TRANSMITTER APPARATUS TO POWER RECEIVER APPARATUS, AND SUPPLYING LOAD DEVICE WITH DESIRED VOLTAGE

Номер: US20220052554A1
Автор: MISHIMA Taichi, NAGAOKA Shingo, UEMATSU Takeshi
Принадлежит:

A detection circuit detects at least one of a value of a current flowing through a power transmitting coil, and a value of a current or voltage generated by an auxiliary coil. A control circuit determines a transmitting frequency based on the value detected by the detection circuit, the transmitting frequency at least locally minimizing load dependence. The control circuit determines a voltage for the transmitting power at which an output voltage of a power receiver apparatus is equal to a predetermined target voltage when generating the transmitting power having the transmitting frequency determined, and controls the power supply circuit to generate the transmitting power having the transmitting frequency and voltage determined. 1. A control apparatus for a power transmitter apparatus that transmits power to a power receiver apparatus comprising a power receiving coil , in a contactless manner ,wherein the power transmitter apparatus comprises: a power transmitting coil, an auxiliary coil electromagnetically coupled to the power transmitting coil, and a power supply circuit that generates transmitting power having a variable voltage and a variable frequency and supplies the transmitting power to the power transmitting coil,wherein the control apparatus comprises:a detection circuit that detects at least one of a value of a current flowing through the power transmitting coil, and a value of a current or voltage generated by the auxiliary coil; anda control circuit that determines a transmitting frequency based on the value detected by the detection circuit, the transmitting frequency at least locally minimizing dependence of an output voltage of the power receiver apparatus on a load value of the power receiver apparatus, determines a voltage for the transmitting power at which the output voltage of the power receiver apparatus is equal to a predetermined target voltage when generating the transmitting power having the transmitting frequency determined, and controls ...

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Номер записи: 100