公开(公告)号：US11515735B2

公开(公告)日：2022-11-29

申请号：US16680678

申请日：2019-11-12

Applicant: Apple Inc.

Inventor： Jerald Polestico Guillermo ,  Previn D. Nair ,  Mikhal S. De Jesus ,  Antoin J. Russell

IPC: H02J50/60 ,  H02J50/12

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.

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.

公开(公告)号：US20180219431A1

公开(公告)日：2018-08-02

申请号：US15885411

申请日：2018-01-31

Applicant: Apple Inc.

Inventor： Jerald Polestico Guillermo ,  Previn D. Nair ,  Mikhal S. De Jesus ,  Antoin J. Russell

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

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.

公开(公告)号：US20200083755A1

公开(公告)日：2020-03-12

申请号：US16680678

申请日：2019-11-12

Applicant: Apple Inc.

Inventor： Jerald Polestico Guillermo ,  Previn D. Nair ,  Mikhal S. De Jesus ,  Antoin J. Russell

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

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.

公开(公告)号：US10511197B2

公开(公告)日：2019-12-17

申请号：US15885411

申请日：2018-01-31

Applicant: Apple Inc.

Inventor： Jerald Polestico Guillermo ,  Previn D. Nair ,  Mikhal S. De Jesus ,  Antoin J. Russell

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

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.

公开(公告)号：US11476719B2

公开(公告)日：2022-10-18

申请号：US16680678

申请日：2019-11-12

Applicant: Apple Inc.

Inventor： Jerald Polestico Guillermo ,  Previn D. Nair ,  Mikhal S. De Jesus ,  Antoin J. Russell

IPC: H02J50/60 ,  H02J50/12

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.

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.