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公开(公告)号：US11251661B2
公开(公告)日：2022-02-15
申请号：US16791700
申请日：2020-02-14
Applicant: Apple Inc.
Inventor： Liang Chen
Abstract: An inductive power transmitter 2 comprising: a plurality of transmitter coils 7; a controller 8 configured to selectively energise the coils 7 in order to couple a receiver 3, the coils 7 selected being dependent on an orientation of the receiver 3, a power transfer optimisation algorithm, or a lookup table.
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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
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.
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公开(公告)号：US12230980B1
公开(公告)日：2025-02-18
申请号：US17448155
申请日：2021-09-20
Applicant: Apple Inc.
Inventor： Ye Li , Gianpaolo Lisi , Bingyao Sun , Liang Chen , Gaurav Kalra , Rohan Dayal , Stephen C. Terry
Abstract: A wireless power system can include a wireless power transmitter and a wireless power receiver. The transmitter can include a transmit coil, an inverter, and inverter control circuitry that can operate one or more switching devices of the inverter to communicate information to the receiver by controlling a delay between receipt of the burst request pulse and initiating operation of the inverter and/or controlling a polarity of a first pulse of the inverter. The receiver can include a receive coil magnetically coupled to the transmit coil, a rectifier, and rectifier control circuitry that initiates a burst request pulse to initiate operation of a transmitter. The rectifier control circuitry can operate one or more switching devices of the rectifier to communicate information to the transmitter by at least one of short circuiting an LC tank including the receive coil or controlling a polarity of the burst request pulse.
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公开(公告)号：US11381120B2
公开(公告)日：2022-07-05
申请号：US16868120
申请日：2020-05-06
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Ron Rafer C. Floresca , Liang Chen , Zaki Moussaoui
IPC: G07C9/00 , B60L53/12 , H02J50/70 , H02J50/80 , H04B5/00 , H02J50/10 , B60R25/24 , B60R25/33 , H02J7/02
Abstract: An electronic device such as a portable electronic device has wireless power receiving circuitry. A vehicle has a vehicle remote keyless system that transmits beacons. A key receives the beacons and responds with key codes to unlock doors and enable a vehicle ignition in the vehicle. In the presence of wireless power transfer operations there is a risk that wireless power signals will interfere with the reception of the beacons by the key. To ensure that beacons are satisfactorily received, conditions in which there is a risk of interference are detected and corresponding interference mitigation operations are performed.
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公开(公告)号：US20220103015A1
公开(公告)日：2022-03-31
申请号：US17386542
申请日：2021-07-28
Applicant: Apple Inc.
Inventor： Michael B. Nussbaum , Katherine I. Pregler , Liang Chen , Todd K. Moyer , Bingyao Sun
Abstract: A wireless power transfer system can include a wireless power transmitter (PTx) and a wireless power receiver (PRx). The PTx can include a transmit coil driven by an inverter configured to receive an input DC voltage and provide an output AC voltage as a plurality of bursts. The PRx can include a receiver coil magnetically coupled to the transmit coil such that the bursts induce a corresponding AC voltage and a rectifier configured to receive the AC voltage and output a DC voltage to a load. The PRx can also include burst request pulse generation circuitry configured to operate the rectifier so as to deliver a burst request pulse to the PTx via magnetic coupling between coils. The PTx can further include inverter control circuitry configured to sense the burst request pulse and, in response thereto, trigger the inverter to deliver an AC voltage burst.
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Patent Agency Ranking
公开(公告)号：US11056928B2
公开(公告)日：2021-07-06
申请号：US16868077
申请日：2020-05-06
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Ron Rafer C. Floresca , Liang Chen , Zaki Moussaoui
Abstract: An electronic device such as a portable electronic device has wireless power receiving circuitry. A vehicle has a vehicle remote keyless system that transmits beacons. A key receives the beacons and responds with key codes to unlock doors and enable a vehicle ignition in the vehicle. In the presence of wireless power transfer operations there is a risk that wireless power signals will interfere with the reception of the beacons by the key. To ensure that beacons are satisfactorily received, conditions in which there is a risk of interference are detected and corresponding interference mitigation operations are performed.
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7.发明授权公开(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
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.
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公开(公告)号：US10923956B2
公开(公告)日：2021-02-16
申请号：US15966511
申请日：2018-04-30
Applicant: Apple Inc.
Inventor： Liang Chen
Abstract: An inductive power transmitter comprising: a converter configured to generate at least two object detection signals at substantially different frequencies, at least one transmitting coil configured to generate a magnetic field based on the object detection signals, and a controller configured to determine or measure circuit parameter(s) in relation to the coil to determine the inductance of the coil at each of the frequencies, and determine whether and/or what kind of object is present depending on a change in inductance between each of the frequencies.
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公开(公告)号：US10593468B2
公开(公告)日：2020-03-17
申请号：US16134812
申请日：2018-09-18
Applicant: Apple Inc.
Inventor： Liang Chen , Saining Ren
Abstract: An inductive power transfer assembly comprising a magnetic core having a base portion, a first limb, and a second limb, wherein the first limb and the second limb extend, in a direction, from a surface of the base portion a first power transfer coil and a second power transfer coil, wherein the first power transfer coil is wound about the first limb, and wherein the second power transfer coil is wound about the second limb; and inverter circuitry connected to the first power transfer coil and the second power transfer coil, wherein the inverter circuitry, during operation, causes the first power transfer coil and the second power transfer coil to generate flux having opposing polarity.
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公开(公告)号：US20180248408A1
公开(公告)日：2018-08-30
申请号：US15966511
申请日：2018-04-30
Applicant: Apple Inc.
Inventor： Liang Chen
Abstract: An inductive power transmitter comprising: a converter configured to generate at least two object detection signals at substantially different frequencies, at least one transmitting coil configured to generate a magnetic field based on the object detection signals, and a controller configured to determine or measure circuit parameter(s) in relation to the coil to determine the inductance of the coil at each of the frequencies, and determine whether and/or what kind of object is present depending on a change in inductance between each of the frequencies.
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