公开(公告)号：US11108435B2

公开(公告)日：2021-08-31

申请号：US15579169

申请日：2016-06-01

Applicant: Apple Inc.

Inventor： Ron Rafer Floresca ,  Arunim Kumar

IPC: H04B5/00 ,  H02J50/10 ,  H02J50/80

Abstract: An inductive power receiver including a switch mode regulator to control the power flow from a power receiving coil and a modulator to communicate to an inductive power transmitter via the power receiving coil. The switch mode regulator operates in a different modes during transmitting and non-transmitting periods.

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

IPC: H02J50/12 ,  H02J50/40 ,  H01F38/14 ,  H02J7/02 ,  H02J5/00 ,  H02J50/80 ,  H02M7/06 ,  H02J50/70

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.

公开(公告)号：US11043853B2

公开(公告)日：2021-06-22

申请号：US15981814

申请日：2018-05-16

Applicant: Apple Inc.

Inventor： Liang Chen ,  Andrew Gray ,  Arunim Kumar ,  Zachary Strachan Harris ,  Antoin J. Russell ,  Bharat K. Patel ,  Saining Ren ,  Jerald Polestico Guillermo ,  Ron Rafer Floresca

IPC: H02J50/60 ,  H02J7/02 ,  H04B5/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/10 ,  H02J7/00

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using an output circuit that includes a wireless power transmitting coil. Measurement circuitry is coupled to the output circuit to help determine whether the wireless power receiving device is present and ready to accept transmission of wireless power. Oscillator circuitry for supplying signals to the output circuitry while making measurements with the measurement circuitry is coupled to the output circuit using an impedance injection network. The impedance injection network includes an inductor and a resistor coupled in series. Control circuitry opens a transistor in the output circuit when making measurements with the measurement circuitry and closes the transistor when transmitting the wireless power signals.

公开(公告)号：US20190341797A1

公开(公告)日：2019-11-07

申请号：US16137286

申请日：2018-09-20

Applicant: Apple Inc.

Inventor： Ron Rafer Floresca ,  Saining Ren ,  Michael Scott Eckert ,  Daniel Lorenz Huber ,  Selestino Langi Rodan ,  Lawrence Bernardo dela Cruz

IPC: H02J7/02 ,  H02J50/10 ,  H02J7/00 ,  H02M3/158

Abstract: An inductive power receiving device configured to: supply power received with a power receiving coil to a load in a first mode; determine whether a converter voltage exceeds a threshold voltage; in response to the determining the converter voltage exceeds the threshold voltage after sending a charging mode request, switch to supplying power received with the power receiving coil to the load in a second mode; and in response to determining the converter voltage coil exceeds the threshold voltage before sending the charging mode request is sent, prevent at least a portion of the power received with the power receiving coil from reaching the load. An inductive power transmitting device configured to provide an alternating current voltage to a power transmitting coil and gradually increase the voltage after receiving a charging mode request and stop gradually increasing the voltage once an inductive power receiving device changes modes.

公开(公告)号：US10784707B2

公开(公告)日：2020-09-22

申请号：US16137286

申请日：2018-09-20

Applicant: Apple Inc.

Inventor： Ron Rafer Floresca ,  Saining Ren ,  Michael Scott Eckert ,  Daniel Lorenz Huber ,  Selestino Langi Rodan ,  Lawrence Bernardo dela Cruz

IPC: H02J7/00 ,  H02J7/02 ,  H02M3/158 ,  H02J50/10

Abstract: An inductive power receiving device configured to: supply power received with a power receiving coil to a load in a first mode; determine whether a converter voltage exceeds a threshold voltage; in response to the determining the converter voltage exceeds the threshold voltage after sending a charging mode request, switch to supplying power received with the power receiving coil to the load in a second mode; and in response to determining the converter voltage coil exceeds the threshold voltage before sending the charging mode request is sent, prevent at least a portion of the power received with the power receiving coil from reaching the load. An inductive power transmitting device configured to provide an alternating current voltage to a power transmitting coil and gradually increase the voltage after receiving a charging mode request and stop gradually increasing the voltage once an inductive power receiving device changes modes.

公开(公告)号：US20180337549A1

公开(公告)日：2018-11-22

申请号：US15981814

申请日：2018-05-16

Applicant: Apple Inc.

Inventor： Liang Chen ,  Andrew Gray ,  Arunim Kumar ,  Zachary Strachan Harris ,  Antoin J. Russell ,  Bharat K. Patel ,  Saining Ren ,  Jerald Polestico Guillermo ,  Ron Rafer Floresca

IPC: H02J7/02 ,  H04B5/00 ,  H02J50/12 ,  H02J50/60

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using an output circuit that includes a wireless power transmitting coil. Measurement circuitry is coupled to the output circuit to help determine whether the wireless power receiving device is present and ready to accept transmission of wireless power. Oscillator circuitry for supplying signals to the output circuitry while making measurements with the measurement circuitry is coupled to the output circuit using an impedance injection network. The impedance injection network includes an inductor and a resistor coupled in series. Control circuitry opens a transistor in the output circuit when making measurements with the measurement circuitry and closes the transistor when transmitting the wireless power signals.