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公开(公告)号：US20180080999A1
公开(公告)日：2018-03-22
申请号：US15272673
申请日：2016-09-22
Applicant: QUALCOMM Incorporated
Inventor： Felix Weidner , Wojciech Chlebosz , Daniel Kuerschner , Michael Werner , Martin Pavlovsky
CPC classification number: H02J50/12 , G06F17/5018 , G06F17/5095 , G06F2217/78
Abstract: Techniques for determining power electronics feasibility in a wireless power transfer system with a transmitting element and a receiving element are provided. An example apparatus includes a processor configured to receive FEM simulation results for offset positions between the transmitting element and the receiving element, calculate a total real input current variation for the offset positions based on the FEM simulation results, calculate an indication of a difference between an ideal transmitting element current value and a real transmitting element current value for each of the offset positions based on the FEM simulation results, determine a maximum difference value based on the indication of the difference for each of the offset positions, and determine the power electronics feasibility based on the total real input current variation as compared to a total real input current variation threshold value, and the maximum difference value as compared to a maximum difference threshold value.
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公开(公告)号：US10046660B2
公开(公告)日：2018-08-14
申请号：US15184877
申请日：2016-06-16
Applicant: QUALCOMM Incorporated
Inventor： Martin Pavlovsky , Felix Weidner
Abstract: Systems, methods, and apparatus are disclosed for wirelessly charging an electric vehicle. In one aspect, a method for transferring power via a magnetic field in a wireless power transfer system is provided. The method includes outputting an alternating electric current to a wireless power transmitter, generating, at the wireless power transmitter, the magnetic field in response to being driven with the alternating electrical current, receiving a value indicative of an electrical characteristic of the wireless power transmitter, and adjusting an operating characteristic of the wireless power transmitter to trigger a change in an electrical current in the receiver, the amount of adjustment selected to cause adjustment of an amount of reactive power in the wireless power transfer system based on changes in the receiver that automatically occur to maintain the output power substantially constant in response to the change in the electrical current in the receiver.
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3.发明申请公开(公告)号：US20170305280A1
公开(公告)日：2017-10-26
申请号：US15134136
申请日：2016-04-20
Applicant: QUALCOMM Incorporated
Inventor： Felix Weidner , Nicholas Athol Keeling
CPC classification number: B60L11/182 , B60L11/1838 , H02J7/02 , H02J7/025 , H02J50/10 , H02J50/12 , H02J50/80 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/121 , Y02T90/122 , Y02T90/128 , Y02T90/14 , Y02T90/163
Abstract: The present disclosure described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, a method for wirelessly transmitting power is provided. The method includes during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver. The method further includes determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level. The method further includes during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level.
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公开(公告)号：US20170274778A1
公开(公告)日：2017-09-28
申请号：US15081540
申请日：2016-03-25
Applicant: QUALCOMM Incorporated
Inventor： Edward van Boheemen , Simon Islinger , Felix Weidner , Michael Werner
CPC classification number: B60L11/182 , B60L11/1829 , B60L11/1833 , B60L2230/10 , H01F27/16 , H01F27/22 , H01F27/365 , H01F38/14 , H02J7/025 , H02J7/027 , H02J50/10
Abstract: The invention described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, an apparatus for wirelessly receiving power is provided. The apparatus may comprise a receiver circuit comprising a receiver coil configured to receive wireless power from a wireless power transmitter via a magnetic field sufficient to charge or power a load of the apparatus. The receiver circuit further comprises a ferrite material having a first side coupled to the receiver coil. The apparatus further comprises a first heat exchanger coupled to a second side of the ferrite material.
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5.发明申请DEVICES, SYSTEMS, AND METHODS USING REACTIVE POWER INJECTION FOR ACTIVE TUNING ELECTRIC VEHICLE CHARGING SYSTEMS 审中-公开用于主动调谐电动车辆充电系统的反作用力注入的装置，系统和方法公开(公告)号：US20160368387A1
公开(公告)日：2016-12-22
申请号：US15184877
申请日：2016-06-16
Applicant: QUALCOMM Incorporated
Inventor： Martin Pavlovsky , Felix Weidner
CPC classification number: B60L11/182 , B60L11/1811 , H02J7/025 , H02J7/045 , H02J50/12 , H02J50/60 , H02J50/80 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
Abstract: Systems, methods, and apparatus are disclosed for wirelessly charging an electric vehicle. In one aspect, a method for transferring power via a magnetic field in a wireless power transfer system is provided. The method includes outputting an alternating electric current to a wireless power transmitter, generating, at the wireless power transmitter, the magnetic field in response to being driven with the alternating electrical current, receiving a value indicative of an electrical characteristic of the wireless power transmitter, and adjusting an operating characteristic of the wireless power transmitter to trigger a change in an electrical current in the receiver, the amount of adjustment selected to cause adjustment of an amount of reactive power in the wireless power transfer system based on changes in the receiver that automatically occur to maintain the output power substantially constant in response to the change in the electrical current in the receiver.
Abstract translation: 公开了用于无线充电电动车辆的系统，方法和装置。 一方面，提供了一种通过无线电力传输系统中的磁场传递电力的方法。 该方法包括向无线电力发射器输出交流电流，响应于以交流电流驱动而在无线电力发射机处产生磁场，接收指示无线电力发射机的电特性的值， 以及调整所述无线电力发射器的操作特性以触发所述接收机中的电流的变化，所述调整量被选择以引起所述无线电力传送系统中的无功功率的量的调整，所述调整量基于所述接收机中的自动变化 发生以响应于接收器中的电流的变化而保持输出功率基本上恒定。
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Patent Agency Ranking
公开(公告)号：US20180262065A1
公开(公告)日：2018-09-13
申请号：US15452400
申请日：2017-03-07
Applicant: QUALCOMM Incorporated
Inventor： Felix Weidner
Abstract: Systems and methods for setting an operating frequency for wireless charging systems. The wireless charging system comprises a transmitter circuit configured to generate a magnetic field in response to a current having an operating frequency and driving the transmitter circuit, and a receiver circuit configured to receive power via the magnetic field. The transmitter circuit and the receiver circuit are separated by an offset distance that contributes to a level of detuning between the transmitter and receiver circuits. To reduce a level of detuning, a level of coupling between the transmitter and receiver circuits is determined based upon a measured current or voltage value associated with the receiver circuit. From the determined level of coupling, the offset distance can be estimated. The offset distance may be used to determine a desired operating frequency for reducing the level of detuning between the transmitter circuit and the receiver circuit.
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7.发明授权公开(公告)号：US10000133B2
公开(公告)日：2018-06-19
申请号：US15134136
申请日：2016-04-20
Applicant: QUALCOMM Incorporated
Inventor： Felix Weidner , Nicholas Athol Keeling
CPC classification number: B60L11/182 , B60L53/12 , B60L53/60 , H02J7/025 , H02J50/12 , H02J50/80 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/121 , Y02T90/122 , Y02T90/128 , Y02T90/14 , Y02T90/163
Abstract: The present disclosure described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, a method for wirelessly transmitting power is provided. The method includes during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver. The method further includes determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level. The method further includes during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level.
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公开(公告)号：US09917480B1
公开(公告)日：2018-03-13
申请号：US15607167
申请日：2017-05-26
Applicant: QUALCOMM Incorporated
Inventor： Felix Weidner , Nicholas Athol Keeling , Joshua Lee
CPC classification number: H02J50/12 , G06K19/0715 , G06K19/0723 , H01F38/14 , H04B5/0031 , H04B5/0037
Abstract: One aspect of the disclosure provides an apparatus for receiving wireless power. The apparatus includes a power receiving circuit and a processing circuit. The power receiving circuit is configured to couple to a magnetic field generated by a power transmitter during an alignment check. The processing circuit is configured to identify a first operation point of the power receiving circuit and a second operation point of the power transmitter based on the magnetic field during the alignment check. The processing circuit is further configured to adjust a duty cycle of an active component of the power receiving circuit based at least in part on one of the identified first operation point and second operation point.
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公开(公告)号：US20180212463A1
公开(公告)日：2018-07-26
申请号：US15415774
申请日：2017-01-25
Applicant: QUALCOMM Incorporated
Inventor： Edward van Boheemen , Felix Weidner
CPC classification number: B60L11/182 , H02J7/025 , H02J50/12 , H02J50/80 , H02M7/48 , H02M2001/0058 , H02M2007/4818 , Y02B70/1441 , Y02B70/1491 , Y02T10/7005 , Y02T10/7022 , Y02T10/7241
Abstract: The present disclosure describes aspects of switched-capacitor power ramping for soft switching. In some aspects, a resonant circuit of a wireless power transmitter includes a portion of capacitance that is switchable. This portion of capacitance can be disconnected from the resonant circuit to detune the resonant circuit, which may affect voltage or current flow in the resonant circuit. For example, when ramping transmitted power up or down, detuning the resonant circuit may enable an inverter of the wireless power transmitter to continuously soft switch through the power ramping process. By so doing, hard switching of the inverter can be avoided and the inverter can be implemented with lower-power or less expensive components.
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公开(公告)号：US09969282B2
公开(公告)日：2018-05-15
申请号：US15081540
申请日：2016-03-25
Applicant: QUALCOMM Incorporated
Inventor： Edward van Boheemen , Simon Islinger , Felix Weidner , Michael Werner
CPC classification number: B60L11/182 , B60L11/1829 , B60L11/1833 , B60L2230/10 , H01F27/16 , H01F27/22 , H01F27/365 , H01F38/14 , H02J7/025 , H02J7/027 , H02J50/10
Abstract: Invention described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the invention, an apparatus for wirelessly receiving power is provided. The apparatus comprises a receiver circuit comprising a receiver coil configured to receive wireless power from a wireless power transmitter via a magnetic field sufficient to charge or power a load of the apparatus. The receiver circuit further comprises a ferrite material having a first side coupled to the receiver coil. The apparatus further comprises a first heat exchanger coupled to a second side of the ferrite material.
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