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1.发明申请公开(公告)号：US20200220393A1
公开(公告)日：2020-07-09
申请号：US16819334
申请日：2020-03-16
Applicant: Apple Inc.
Inventor： Daniel James Robertson
Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter voltages, and the variation in current is used to determine where there is a receiver present.
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公开(公告)号：US11283308B2
公开(公告)日：2022-03-22
申请号：US16819334
申请日：2020-03-16
Applicant: Apple Inc.
Inventor： Daniel James Robertson
Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter voltages, and the variation in current is used to determine where there is a receiver present.
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Patent Agency Ranking
公开(公告)号：US10038389B2
公开(公告)日：2018-07-31
申请号：US15479219
申请日：2017-04-04
Applicant: Apple Inc.
Inventor： Daniel James Robertson , Saining Ren , Eugenio Sia Lecias
Abstract: A method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable of the converter and are switched into a second state at the occurrence of an event that is not related to a dependent variable of the converter, and the method may be employed in a converter or an inductive power transfer transmitter.
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公开(公告)号：US11108282B2
公开(公告)日：2021-08-31
申请号：US16200960
申请日：2018-11-27
Applicant: Apple Inc.
Inventor： Fady Mishriki , Lawrence Bernardo dela Cruz , Daniel James Robertson , John Kinnear Terry , Saining Ren
Abstract: A powered joint having a first joint component and second joint component in which the first joint component has multiple degrees of rotational freedom with respect to the second joint component, the powered joint including one or more power transmission coils associated with the first component; a plurality of power receiving coils associated with the second component; a sensor which determines the orientation of the second component with respect to the first component; and a control circuit for selectively connecting one of the plurality of power receiving coils to a power receiving circuit based on information received from the sensor.
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公开(公告)号：US10601264B2
公开(公告)日：2020-03-24
申请号：US15493857
申请日：2017-04-21
Applicant: Apple Inc.
Inventor： Daniel James Robertson
Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter voltages, and the variation in current is used to determine where there is a receiver present.
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公开(公告)号：US20190097472A1
公开(公告)日：2019-03-28
申请号：US16200960
申请日：2018-11-27
Applicant: Apple Inc.
Inventor： Fady Mishriki , Lawrence Bernardo dela Cruz , Daniel James Robertson , John Kinnear Terry , Saining Ren
Abstract: A powered joint having a first joint component and second joint component in which the first joint component has multiple degrees of rotational freedom with respect to the second joint component, the powered joint including one or more power transmission coils associated with the first component; a plurality of power receiving coils associated with the second component; a sensor which determines the orientation of the second component with respect to the first component; and a control circuit for selectively connecting one of the plurality of power receiving coils to a power receiving circuit based on information received from the sensor.
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公开(公告)号：US10020687B2
公开(公告)日：2018-07-10
申请号：US15113591
申请日：2015-01-22
Applicant: Apple Inc.
Inventor： Eugenio Jr. Sia Lecias , Junbo Zeng , Saining Ren , Daniel James Robertson , Michael Nasa , Ron Rafer Floresca , Arunim Kumar , Ali Abdolkhani
CPC classification number: H02J50/12 , H01F38/14 , H02J5/005 , H02J7/025 , H02J50/40 , H02J50/70 , H02J50/80 , H02M7/06
Abstract: An inductive power transfer device including: a resonant circuit, having a power transfer coil and a power transfer capacitor; a coupling coil, magnetically-coupled to the power transfer coil; a variable impedance; and a controller configured to determine the impedance value of the variable impedance based on predetermined criteria including: substantially regulating power provided to a load; tuning the resonant circuit resonant frequency substantially to a predetermined frequency; adjusting a frequency of a magnetic field associated with the power transfer coil; and/or adjusting an impedance reflected by the power transfer coil to a corresponding coupled power transfer coil.
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