Foreign object detection in wireless energy transfer systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01F-038/00
G01V-003/08
H02J-050/60
H02J-050/80
H02J-050/70
H02J-050/12
B60L-011/18
G01V-003/10
H02J-005/00
H02J-007/02
H02J-017/00
출원번호
US-0706531
(2015-05-07)
등록번호
US-10018744
(2018-07-10)
발명자
/ 주소
Roy, Arunanshu Mohan
Katz, Noam
Atnafu, Nathaniel Endale
출원인 / 주소
WiTricity Corporation
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
1인용 특허 :
212
초록▼
Systems and methods for detecting foreign object debris around a wireless power transfer system include a plurality of detectors, each detector featuring one or more loops of conducting material, and a controller configured to measure at least one of a voltage and a current in each detector and to d
Systems and methods for detecting foreign object debris around a wireless power transfer system include a plurality of detectors, each detector featuring one or more loops of conducting material, and a controller configured to measure at least one of a voltage and a current in each detector and to determine, based on the measurements, whether foreign object debris is present around the wireless power transfer system, where at least some of the plurality of detectors include a first number of loops of the conducting material, and at least some of the plurality of detectors include a second number of loops of the conducting material larger than the first number.
대표청구항▼
1. A wireless power transfer system comprising: a wireless power transfer source configured to generate a source magnetic field at a first frequency to transfer power to a wireless power receiver;an auxiliary magnetic field source configured to generate an auxiliary magnetic field at a second freque
1. A wireless power transfer system comprising: a wireless power transfer source configured to generate a source magnetic field at a first frequency to transfer power to a wireless power receiver;an auxiliary magnetic field source configured to generate an auxiliary magnetic field at a second frequency;at least one detector configured to generate an electrical signal in response to perturbations in the auxiliary magnetic field generated by the auxiliary magnetic field source; anda controller configured to determine whether foreign object debris is present around the wireless power transfer system based on the electrical signal. 2. The wireless power transfer system of claim 1, wherein the auxiliary magnetic field source comprises at least one auxiliary coil and at least one amplifier. 3. The wireless power transfer system of claim 1, wherein the first frequency is equal to the second frequency. 4. The wireless power transfer system of claim 1, wherein the first frequency is different from the second frequency. 5. The wireless power transfer system of claim 1, further comprising a power supply coupled to the wireless power transfer source and configured to provide power to drive the wireless power source, and wherein the power supply is turned off when the auxiliary magnetic field source is generating an auxiliary magnetic field. 6. The wireless power transfer system of claim 1, wherein the auxiliary magnetic field source comprises up to four auxiliary coils and up to four amplifiers. 7. The wireless power transfer system of claim 2, wherein the wireless power source comprises a source resonator coil wound over a first area, and wherein the at least one auxiliary coil is configured to be wound over the first area. 8. The wireless power transfer system of claim 7, wherein the at least one auxiliary coil comprises two sets of conductor windings connected in series, each of the two sets of conductor windings being wound over one of a second and a third area, respectively. 9. The wireless power transfer system of claim 8, wherein a sum of the second and third areas is substantially equal to the first area. 10. The wireless power transfer system of claim 7, wherein the at least one auxiliary coil comprises four sets of conductor windings connected in series, each of the four sets of conductor windings being wound over one of a second, third, fourth, and fifth area, respectively. 11. The wireless power transfer system of claim 10 wherein a sum of the second, third, fourth, and fifth areas is substantially equal to the first area. 12. The wireless power transfer system of claim 7, wherein the auxiliary magnetic field induces a current in the source resonator coil, and wherein the current in the source resonator coil generates a magnetic field having a strength greater than the auxiliary magnetic field. 13. The wireless power transfer system of claim 7, wherein the at least one auxiliary coil comprises a first portion of a conductor winding on a first circuit board and a second portion of a conductor winding on a second circuit board, and wherein a connector between the first and second circuit boards provides an electrical connection between the first and second portions of the conductor winding. 14. The wireless power transfer system of claim 1, wherein a phase of the source magnetic field at the first frequency differs by 30% or more from a phase of the auxiliary magnetic field at the second frequency. 15. The wireless power transfer system of claim 7, wherein the source resonator coil comprises a first set of one or more electrically conductive traces, and wherein the auxiliary coil comprises a second set of one or more electrically conductive traces. 16. The wireless power transfer system of claim 15, wherein the second set of traces is evenly distributed over the first set of traces such that the auxiliary magnetic field is of a similar shape to the source magnetic field. 17. The wireless power transfer system of claim 7, wherein at least a portion of windings of the at least one auxiliary coil is evenly distributed over at least a portion of windings of the source resonator coil such that the auxiliary magnetic field is of a similar shape to the source magnetic field. 18. The wireless power transfer system of claim 2, further comprising a switch electrically connected between the at least one amplifier and the at least one auxiliary coil. 19. The wireless power transfer system of claim 1, wherein the at least one detector comprises one or more loops of conducting material.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (212)
John Michael Sasha, Adaptive brain stimulation method and system.
Paul, George Lange; Pynenburg, Rory Albert James; Mahon, Peter John; Vassallo, Anthony Michael; Jones, Philip Andrew; Keshishian, Sarkis; Pandolfo, Anthony Gaetano, Charge storage device.
Klontz Keith W. (Sun Prairie WI) Divan Deepakraj M. (Madison WI) Novotny Donald W. (Madison WI) Lorenz Robert D. (Madison WI), Contactless battery charging system.
Tanzer Herbert J. (Topanga CA) Quon William (Alhambra CA) Ramos Sergio (Wilmington CA), Cooled secondary coils of electric automobile charging transformer.
Schmid G (Nrnberg DEX) Genzel Michael (Rosstal DEX) Hettich Gerhard (Rosstal DEX), Device for transmission and evaluation of measurement signals for the tire pressure of motor vehicles.
Hamam, Rafif E.; Karalis, Aristeidis; Joannopoulos, John D.; Soljacic, Marin, Efficient near-field wireless energy transfer using adiabatic system variations.
Ishii Naoki (Handa JPX) Ina Toshikazu (Nagoya JPX) Mori Koji (Oobu JPX) Ito Katsunori (Aichi JPX) Asai Shigenori (Okazaki JPX), Electric power transmitting device with inductive coupling.
Boys John T. (15A Island Bay Road Birkdale ; Auckland 10 NZX) Green Andrew W. (15 McDonald Road Papatoetoe ; Auckland NZX), Inductive power pick-up coils.
Bartlett James L. ; Chang Mau Chung F. ; Marcy ; 5th Henry O. ; Pedrotti Kenneth D. ; Pehlke David R. ; Seabury Charles W. ; Yao Jun J. ; Mehrotra Deepak ; Tham J. L. Julian, Integrated tunable high efficiency power amplifier.
Park, Eun Seok; Kwon, Sang Wook; Hong, Young-tack, Load impedance decision device, wireless power transmission device, and wireless power transmission method.
Soljacic, Marin; Fan, Shanhui; Ibanescu, Mihai; Johnson, Steven G.; Joannopoulos, John D., Mach-Zehnder interferometer using photonic band gap crystals.
Scheible, Guntram; Schutz, Jean; Oberschmidt, Carsten, Magnetic field production system, and configuration for wire-free supply of a large number of sensors and/or actuators using a magnetic field production system.
Brownlee Robert R. (Ormond Beach FL), Method and apparatus for the suppression of far-field interference signals for implantable device data transmission syst.
Nakazawa Yuji,JPX ; Fukabori Mitsuhiko,JPX ; Nakazato Yusaburo,JPX ; Fujimoto Osamu,JPX ; Kondo Yutaka,JPX ; Miyaji Masahiro,JPX, Method for discriminating between used and unused gas generators for air bags during car scrapping process.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Schatz, David A.; Lou, Herbert Toby; Kesler, Morris P.; Hall, Katherine L.; Kulikowski, Konrad; Giler, Eric R.; Fiorello, Ron; Soljacic, Marin, Multi-resonator wireless energy transfer for exterior lighting.
Shimizu, Kanjiro; Takahashi, Toshiyuki, Non-contact wireless communication apparatus, method of adjusting resonance frequency of non-contact wireless communication antenna, and mobile terminal apparatus.
Barrett Terence W. (1453 Beulah Rd. Vienna VA 22182), Oscillator-shuttle-circuit (OSC) networks for conditioning energy in higher-order symmetry algebraic topological forms a.
Fletcher ; James C. Administrator of the National Aeronautics and Space ; Administration ; with respect to an invention of ; Dickinson ; Richard M., RF beam center location method and apparatus for power transmission system.
Kuennen, Roy W.; Baarman, David W.; Mollema, Scott A.; Markham, Ronald C.; Lautzenheiser, Terry L., Radio frequency identification system for a fluid treatment system.
Uesaka Kouichi,JPX ; Hayashi Yoshihiko,JPX ; Suga Takashi,JPX ; Makuuchi Masami,JPX ; Yoshino Ryozo,JPX, Reader/writer having coil arrangements to restrain electromagnetic field intensity at a distance.
Desai,Resha H.; Hassler, Jr.,William L., Spatially decoupled twin secondary coils for optimizing transcutaneous energy transfer (TET) power transfer characteristics.
Mueller Jeffrey S. ; Nagle H. Troy ; Gyurcsik Ronald S. ; Kelley Arthur W., System and method for powering, controlling, and communicating with multiple inductively-powered devices.
Scheible, Guntram; Smailus, Bernd; Klaus, Martin; Garrels, Kai; Heinemann, Lothar, System for a machine having a large number of proximity sensors, as well as a proximity sensor, and a primary winding for this purpose.
Scheible, Guntram; Smailus, Bernd; Klaus, Martin; Garrels, Kai; Heinemann, Lothar, System for wirelessly supplying a large number of actuators of a machine with electrical power.
Tolle, Tobias Georg; Waffenschmidt, Eberhard, System, an inductive power device, an energizable load and a method for enabling a wireless power transfer.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Schatz, David A.; Kesler, Morris P.; Hall, Katherine L.; Giler, Eric R.; Soljacic, Marin, Tunable wireless energy transfer for outdoor lighting applications.
David W. Baarman ; Roy W. Kuennen ; Dennis J. Denen ; Terry L. Lautzenheiser ; Ronald C. Markham JP; Scott A. Mollema, Water treatment system with an inductively coupled ballast.
Kurs, Andre B.; Karalis, Aristeidis; Kesler, Morris P.; Campanella, Andrew J.; Hall, Katherine L.; Kulikowski, Konrad J.; Li, Qiang; Soljacic, Marin, Wireless energy transfer for computer peripheral applications.
Schatz, David A.; Lou, Herbert T.; Kesler, Morris P.; Hall, Katherine L.; Kulikowski, Konrad J.; Giler, Eric R.; Fiorello, Ron, Wireless energy transfer for refrigerator application.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer over distance using field shaping to improve the coupling factor.
Kesler, Morris P.; Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Fiorello, Ron; Li, Qiang; Kulikowski, Konrad J.; Giler, Eric R.; Schatz, David A.; Hall, Katherine L.; Soljacic, Marin, Wireless energy transfer resonator kit.
Kesler, Morris P.; Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Fiorello, Ron; Li, Qiang; Kulikowski, Konrad; Giler, Eric R.; Pergal, Frank J.; Schatz, David A.; Hall, Katherine L.; Soljacic, Marin, Wireless energy transfer systems.
Kurs, Andre B.; Karalis, Aristeidis; Kesler, Morris P.; Campanella, Andrew J.; Hall, Katherine L.; Kulikowski, Konrad J.; Li, Qiang; Soljacic, Marin, Wireless energy transfer systems.
Kurs, Andre B.; Karalis, Aristeidis; Kesler, Morris P.; Campanella, Andrew J.; Hall, Katherine L.; Kulikowski, Konrad J.; Li, Qiang; Soljacic, Marin, Wireless energy transfer systems.
Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P.; Karalis, Aristeidis, Wireless energy transfer using conducting surfaces to shape field and improve K.
Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P.; Karalis, Aristeidis, Wireless energy transfer using conducting surfaces to shape fields and reduce loss.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer using field shaping to reduce loss.
Schatz, David A.; Karalis, Aristeidis; Hall, Katherine L.; Kesler, Morris P.; Soljacic, Marin; Giler, Eric R.; Kurs, Andre B.; Kulikowski, Konrad J., Wireless energy transfer using high Q resonators for lighting applications.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer using magnetic materials to shape field and reduce loss.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer using object positioning for improved k.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer using object positioning for low loss.
Giler, Eric R.; Hall, Katherine L.; Kesler, Morris P.; Soljacic, Marin; Karalis, Aristeidis; Kurs, Andre B.; Li, Qiang; Ganem, Steven J., Wireless energy transfer using repeater resonators.
Kurs, Andre B.; Karalis, Aristeidis; Kesler, Morris P.; Campanella, Andrew J.; Hall, Katherine L.; Kulikowski, Konrad J.; Soljacic, Marin, Wireless energy transfer using variable size resonators and system monitoring.
Schatz, David A.; Lou, Herbert T.; Kesler, Morris P.; Hall, Katherine L.; Kulikowski, Konrad J.; Giler, Eric R.; Fiorello, Ron, Wireless energy transfer with feedback control for lighting applications.
Karalis, Aristeidis; Kurs, Andre B.; Campanella, Andrew J.; Kulikowski, Konrad J.; Hall, Katherine L.; Soljacic, Marin; Kesler, Morris P., Wireless energy transfer with high-Q resonators using field shaping to improve K.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.