IN2014CN02821A - - Google Patents

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Publication number
IN2014CN02821A
IN2014CN02821A IN2821CHN2014A IN2014CN02821A IN 2014CN02821 A IN2014CN02821 A IN 2014CN02821A IN 2821CHN2014 A IN2821CHN2014 A IN 2821CHN2014A IN 2014CN02821 A IN2014CN02821 A IN 2014CN02821A
Authority
IN
India
Prior art keywords
wireless power
power transmitter
comprises determining
load
voltage
Prior art date
Application number
Inventor
Cody B Wheeland
Ryan Tseng
Novak William H Von
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/646,553 external-priority patent/US9071284B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014CN02821A publication Critical patent/IN2014CN02821A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Filters And Equalizers (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

This disclosure provides systems methods and apparatus for detecting an impedance of a wireless power transmitter load. In one aspect a method of determining a reactive condition of a wireless power transmitter apparatus is provided. The method comprises determining a value correlated to a voltage of drain of a switching element (604) of a driver circuit (624) of the wireless power transmitter (600). The method further comprises determining a reactance load (618) change based on the determined voltage.
IN2821CHN2014 2011-10-21 2012-10-17 IN2014CN02821A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161550251P 2011-10-21 2011-10-21
US13/646,553 US9071284B2 (en) 2011-10-21 2012-10-05 Load impedance detection for static or dynamic adjustment of passive loads
PCT/US2012/060590 WO2013059300A2 (en) 2011-10-21 2012-10-17 Load impedance detection for static or dynamic adjustment of passive loads

Publications (1)

Publication Number Publication Date
IN2014CN02821A true IN2014CN02821A (en) 2015-07-03

Family

ID=48141612

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2821CHN2014 IN2014CN02821A (en) 2011-10-21 2012-10-17

Country Status (6)

Country Link
EP (1) EP2769454B1 (en)
JP (2) JP6005170B2 (en)
KR (1) KR101612654B1 (en)
CN (1) CN103959602B (en)
IN (1) IN2014CN02821A (en)
WO (1) WO2013059300A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102187962B1 (en) * 2013-05-10 2020-12-08 삼성전자주식회사 Differential load detection method for detecting a wireless power receiver in wireless power network and wireless power transmitter
EP3072212A4 (en) * 2013-11-11 2017-04-26 PowerbyProxi Limited Contactless power receiver and method for operating same
WO2015084587A1 (en) 2013-12-03 2015-06-11 Massachusetts Institute Of Technology Method and apparatus for wirelessly charging portable electronic devices
CN106033400B (en) * 2015-03-18 2019-04-05 瑞昱半导体股份有限公司 Universal serial bus cable species detection device and method
US10498160B2 (en) 2015-08-03 2019-12-03 Massachusetts Institute Of Technology Efficiency maximization for device-to-device wireless charging
US10291074B2 (en) 2015-09-09 2019-05-14 Samsung Electronics Co., Ltd. Method and apparatus for transmitting wireless power
TWI621319B (en) * 2015-09-19 2018-04-11 立錡科技股份有限公司 Resonant wireless power transmit circuit and control method thereof
CN106130195B (en) * 2016-08-02 2019-03-15 无锡晶磊电子有限公司 Wireless charging circuit with flatwise coil
WO2018064791A1 (en) * 2016-10-03 2018-04-12 Intel Corporation Reactance shift detection and over dissipation protection in a wireless power transmitter
KR101945601B1 (en) * 2016-12-15 2019-02-07 경희대학교 산학협력단 Method and apparatus for dynamic impedance matching in magnetic resonance type wireless power transfer system
US11018526B2 (en) 2018-02-08 2021-05-25 Massachusetts Institute Of Technology Detuning for a resonant wireless power transfer system including cooperative power sharing
US10651687B2 (en) 2018-02-08 2020-05-12 Massachusetts Institute Of Technology Detuning for a resonant wireless power transfer system including cryptography
KR102432604B1 (en) * 2018-03-08 2022-08-16 가부시키가이샤 무라타 세이사쿠쇼 Multiplexers, High-Frequency Front-End Circuits and Communication Devices
JP7126887B2 (en) * 2018-07-11 2022-08-29 東芝テック株式会社 Power transmission device and power transmission system
CN108923552A (en) * 2018-07-27 2018-11-30 浙江泰米电子科技有限公司 A kind of wireless charging foreign bodies detection circuit and method
CN112874389B (en) * 2021-02-01 2022-07-12 重庆中车长客轨道车辆有限公司 Operation protection method, device, equipment and computer readable storage medium
CN113466648B (en) * 2021-06-28 2024-08-27 深圳市时代速信科技有限公司 Detector, detection method and device for GaN device energy wave

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
CN1813396B (en) * 2003-05-23 2010-04-28 奥克兰联合服务有限公司 Resonant converter and method thereof, and inductively coupled power transfer system
JP2008028791A (en) * 2006-07-24 2008-02-07 Matsushita Electric Ind Co Ltd Class E amplifier, reader / writer and document management system using the same
JP4649430B2 (en) * 2007-03-20 2011-03-09 セイコーエプソン株式会社 Non-contact power transmission device
JP4600453B2 (en) * 2007-09-26 2010-12-15 セイコーエプソン株式会社 Power transmission control device, power transmission device, power reception device, non-contact power transmission system, electronic device, secondary coil position detection method, and primary coil positioning method
WO2009140506A1 (en) 2008-05-14 2009-11-19 Massachusetts Institute Of Technology Wireless energy transfer, including interference enhancement
US8532724B2 (en) * 2008-09-17 2013-09-10 Qualcomm Incorporated Transmitters for wireless power transmission
US9601261B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Wireless energy transfer using repeater resonators
US20100277121A1 (en) 2008-09-27 2010-11-04 Hall Katherine L Wireless energy transfer between a source and a vehicle
JP5174628B2 (en) * 2008-11-20 2013-04-03 オリンパス株式会社 Power supply
US8338991B2 (en) * 2009-03-20 2012-12-25 Qualcomm Incorporated Adaptive impedance tuning in wireless power transmission
JP2010246248A (en) 2009-04-05 2010-10-28 Kimitake Utsunomiya Radio power supply device in apparatus
EP2293438B1 (en) * 2009-09-07 2012-06-20 Nxp B.V. A switching amplifier
US8228027B2 (en) * 2009-10-13 2012-07-24 Multi-Fineline Electronix, Inc. Wireless power transmitter with multilayer printed circuit
US8772975B2 (en) * 2009-12-07 2014-07-08 Qualcomm Incorporated Apparatus and method for implementing a differential drive amplifier and a coil arrangement
JP2011155733A (en) * 2010-01-26 2011-08-11 Equos Research Co Ltd Noncontact power transmission system and noncontact power transmission device
KR101697364B1 (en) * 2010-02-17 2017-01-17 삼성전자주식회사 Apparatus for transmitting/receving wireless power having resonance frequency stabilization circuit
JP5093386B2 (en) * 2010-08-25 2012-12-12 株式会社村田製作所 Power transmission device and power transmission system
JP5670869B2 (en) * 2010-12-22 2015-02-18 パナソニックＩｐマネジメント株式会社 Wireless power transmission system

Also Published As

Publication number Publication date
JP2015503311A (en) 2015-01-29
KR101612654B1 (en) 2016-04-14
CN103959602A (en) 2014-07-30
JP2016197990A (en) 2016-11-24
EP2769454B1 (en) 2016-01-06
CN103959602B (en) 2018-05-29
EP2769454A2 (en) 2014-08-27
WO2013059300A3 (en) 2013-06-20
JP6005170B2 (en) 2016-10-12
WO2013059300A2 (en) 2013-04-25
KR20140080549A (en) 2014-06-30

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