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公开(公告)号：US20230170717A1
公开(公告)日：2023-06-01
申请号：US18154383
申请日：2023-01-13
Applicant: Apple Inc.
Inventor： Ye Li , Antoin J. Russell , Stephen C. Terry , Adam L. Schwartz , Sumant Ranganathan , Gianpaolo Lisi
CPC classification number: H02J7/00711 , H02J50/80 , H02J50/70 , H02J50/12
Abstract: A wireless power transmitter can include a coil, an inverter coupled to the coil, and control circuitry coupled to the inverter that, responsive to receiving a burst request pulse from a wireless power receiver, initiates inverter operation, driving the coil and powering the receiver. The control circuitry can operate inverter switches so bandwidth of the wireless power transfer signal falls within a specified range by: (a) extending a minimum on time of the switches, (b) modifying pulse width modulation (PWM) drive signals supplied to the switches to shape a coil current burst envelope, and/or (c) modifying PWM signal amplitude supplied to the switches. Modifying the PWM drive signals can include using a symmetrical PWM scheme in which the positive and negative pulses are symmetrical in width on a cycle-by-cycle basis or using a complementary PWM scheme in which the positive and negative pulse widths are complementary on a cycle-by-cycle basis.
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公开(公告)号：US12184111B2
公开(公告)日：2024-12-31
申请号：US18154383
申请日：2023-01-13
Applicant: Apple Inc.
Inventor： Ye Li , Antoin J. Russell , Stephen C. Terry , Adam L. Schwartz , Sumant Ranganathan , Gianpaolo Lisi
Abstract: A wireless power transmitter can include a coil, an inverter coupled to the coil, and control circuitry coupled to the inverter that, responsive to receiving a burst request pulse from a wireless power receiver, initiates inverter operation, driving the coil and powering the receiver. The control circuitry can operate inverter switches so bandwidth of the wireless power transfer signal falls within a specified range by: (a) extending a minimum on time of the switches, (b) modifying pulse width modulation (PWM) drive signals supplied to the switches to shape a coil current burst envelope, and/or (c) modifying PWM signal amplitude supplied to the switches. Modifying the PWM drive signals can include using a symmetrical PWM scheme in which the positive and negative pulses are symmetrical in width on a cycle-by-cycle basis or using a complementary PWM scheme in which the positive and negative pulse widths are complementary on a cycle-by-cycle basis.
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Patent Agency Ranking
公开(公告)号：US11700472B1
公开(公告)日：2023-07-11
申请号：US17029391
申请日：2020-09-23
Applicant: Apple Inc.
Inventor： Jukka-pekka J. Sjoeroos , Ye Li , Zaki Moussaoui
CPC classification number: H04R1/1025 , H02J7/02 , H02J50/005 , H02J50/12 , H02J50/402 , H02J50/70
Abstract: Electronic apparatuses according to embodiments of the present technology may include an enclosure having a lid. The enclosure may define a first cavity and a second cavity, and may include an enclosure battery. The apparatuses may include a first enclosure wireless charging coil extending about the first cavity. The apparatuses may include a second enclosure wireless charging coil extending about the second cavity. The apparatuses may include a first earbud having a first earbud battery and a first earbud wireless charging coil operably coupleable with the first enclosure wireless charging coil for wireless charging of the first earbud battery. The apparatuses may include a second earbud having a second earbud battery and a second earbud wireless charging coil operably coupleable with the second enclosure wireless charging coil for wireless charging of the second earbud battery.
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4.发明申请公开(公告)号：US20220320904A1
公开(公告)日：2022-10-06
申请号：US17652840
申请日：2022-02-28
Applicant: Apple Inc.
Inventor： Ye Li
Abstract: A device can include a wireless power transfer coil couplable to a complementary wireless power transfer coil of another device. The device can further include wireless power transmitting and/or receiving circuitry. The device can still further include a processing and communications system, and a wireless communications coil coupled to the processing and communications system. The communications coil can include a winding magnetically couplable to a corresponding communications coil of the complementary device to allow communications between the processing and communications system and the complementary device. The wireless communications coil can be separated from the power transfer coil along a longitudinal axis of the device.
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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：US11677255B1
公开(公告)日：2023-06-13
申请号：US17644005
申请日：2021-12-13
Applicant: Apple Inc.
Inventor： Ye Li , Antoin J. Russell , Stephen C. Terry , Adam L. Schwartz , Sumant Ranganathan , Gianpaolo Lisi
CPC classification number: H02J7/00711 , H02J50/12 , H02J50/70 , H02J50/80
Abstract: A wireless power transmitter can include a coil, an inverter coupled to the coil, and control circuitry coupled to the inverter that, responsive to receiving a burst request pulse from a wireless power receiver, initiates inverter operation, driving the coil and powering the receiver. The control circuitry can operate inverter switches so bandwidth of the wireless power transfer signal falls within a specified range by: (a) extending a minimum on time of the switches, (b) modifying pulse width modulation (PWM) drive signals supplied to the switches to shape a coil current burst envelope, and/or (c) modifying PWM signal amplitude supplied to the switches. Modifying the PWM drive signals can include using a symmetrical PWM scheme in which the positive and negative pulses are symmetrical in width on a cycle-by-cycle basis or using a complementary PWM scheme in which the positive and negative pulse widths are complementary on a cycle-by-cycle basis.
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公开(公告)号：US20230080598A1
公开(公告)日：2023-03-16
申请号：US17824480
申请日：2022-05-25
Applicant: Apple Inc.
Inventor： Eric X. Zhou , Muhammad H. Kiani , Rohan Dayal , Ye Li
Abstract: Accessory cases that can be charged using one or more types of wireless chargers. An example can provide an accessory case having a first alignment feature for aligning to a first type of wireless charger. The first alignment feature can include one or more magnetic elements in the accessory case. The one or more magnetic elements can be located in both the base and the lid of the accessory case. Another example can further include a second alignment feature for aligning to a second type of wireless charger. The second alignment feature can include one or more magnetic elements in the accessory case.
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