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公开(公告)号：US12100968B2
公开(公告)日：2024-09-24
申请号：US17513581
申请日：2021-10-28
Applicant: Apple Inc.
Inventor： Lixin Shi , Weihong Qiu , Zelin Xu , Zaki Moussaoui , Matthew J. Chabalko
Abstract: An electronic device (that is capable of both transmitting and receiving wireless power) may be physically and inductively coupled to a removable accessory (that only receives wireless power). The electronic device and removable accessory may optionally be placed on a power transmitting device. In response to the electronic device and removable accessory being placed on a wireless power transmitting device, the electronic device may switch from a power transmitting mode (in which the electronic device transmits wireless power to the removable accessory) to a power receiving mode (in which the electronic device receives wireless power from the wireless power transmitting device). To ensure the electronic device detects the wireless power transmitting device and switches to the power receiving mode in this scenario, the electronic device may transmit wireless power in bursts separated by sleep periods while in the power transmitting mode.
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公开(公告)号：US11909248B2
公开(公告)日：2024-02-20
申请号：US17179647
申请日：2021-02-19
Applicant: Apple Inc.
Inventor： Zelin Xu , Nan Liu , Zaki Moussaoui , Gianpaolo Lisi , Kunal Bhargava , Madhusudanan Keezhveedi Sampath , Matthew J. Chabalko , Robert Scritzky
CPC classification number: H02J7/02 , G06F3/03545 , H01F7/02 , H02J7/0042 , H02J50/10 , H05K5/0017 , H05K5/03 , H05K9/0007
Abstract: A device in a wireless power system may be operable with a removable accessory such as a case. The device may transmit or receive wireless power through the case while the electronic device is coupled to the case. The case may have a folio shape with a front cover portion that covers the display of the electronic device. The case may have an embedded ferrimagnetic core that relays magnetic flux during wireless power transfer operations. Magnetic alignment structures in the case may position the ferrimagnetic core in the case in a high magnetic flux density region between the power transmitting device and the power receiving device. The ferrimagnetic core relays the magnetic flux between a transmitting coil in the power transmitting device and a receiving coil in the power receiving device. The ferrimagnetic core may be formed in a front portion, a sidewall, or a rear wall of a case.
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公开(公告)号：US12288635B2
公开(公告)日：2025-04-29
申请号：US18661432
申请日：2024-05-10
Applicant: Apple Inc.
Inventor： Zaki Moussaoui , Zelin Xu , Matthew J. Chabalko , Nan Liu
Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may convey wireless power to, from, or through the case while the device is coupled to the case. The device may have coplanar power transmitting and power receiving coils. The removable accessory may have an embedded switchable ferrimagnetic core and a coil that overlaps the switchable ferrimagnetic core. The switchable ferrimagnetic core may be operable in a first state where the switchable ferrimagnetic core is unsaturated. The switchable ferrimagnetic core may be operable in a second state where the switchable ferrimagnetic core is saturated by a magnetic field from a permanent magnet in a wireless power transmitting device. In the second state, the switchable ferrimagnetic core may have a lower magnetic permeability and higher magnetic reluctance than in the first state.
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公开(公告)号：US12212159B1
公开(公告)日：2025-01-28
申请号：US18330043
申请日：2023-06-06
Applicant: Apple Inc.
Inventor： Alireza Safaee , Matthew J. Chabalko , Douglas Adams , Ruiyang Lin , Zaki Moussaoui
Abstract: A method of modeling a wireless power transfer system can include constructing a loss-split circuit model of the wireless power transfer system. The loss-split circuit model can include a plurality of resistance values corresponding to power losses in selected components of the power system. The method can further include performing a plurality of finite element analyses to determine the plurality of resistor values. The one or more resistance values can correspond to power losses associated with one or more of: a transmitter coil, a receiver coil, friendly metal associated with a transmitter, friendly metal associated with a receiver, and a foreign object.
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公开(公告)号：US12014857B2
公开(公告)日：2024-06-18
申请号：US17179603
申请日：2021-02-19
Applicant: Apple Inc.
Inventor： Zaki Moussaoui , Zelin Xu , Matthew J. Chabalko , Nan Liu
Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may convey wireless power to, from, or through the case while the device is coupled to the case. The device may have coplanar power transmitting and power receiving coils. The removable accessory may have an embedded switchable ferrimagnetic core and a coil that overlaps the switchable ferrimagnetic core. The switchable ferrimagnetic core may be operable in a first state where the switchable ferrimagnetic core is unsaturated. The switchable ferrimagnetic core may be operable in a second state where the switchable ferrimagnetic core is saturated by a magnetic field from a permanent magnet in a wireless power transmitting device. In the second state, the switchable ferrimagnetic core may have a lower magnetic permeability and higher magnetic reluctance than in the first state.
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Patent Agency Ranking
公开(公告)号：US20230100393A1
公开(公告)日：2023-03-30
申请号：US17816081
申请日：2022-07-29
Applicant: Apple Inc.
Inventor： Lixin Shi , Zaki Moussaoui , Weihong Qiu , Zelin Xu , Matthew J. Chabalko
Abstract: A wireless power transfer system can include an electronic device including a first wireless power transfer coil and wireless power transfer circuitry coupled to the wireless power transfer coil. The wireless power transfer circuitry can be capable of receiving power and transmitting power wirelessly via the first wireless power transfer coil. The system can further include an accessory device including a second wireless power transfer coil, a rectifier coupled to the second wireless power transfer coil, and an energy storage device coupled to the rectifier by a regulator circuit. The wireless power transfer circuitry can operate in a pulsed or burst wireless power transfer mode to deliver power to the accessory device.
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公开(公告)号：US20230059432A1
公开(公告)日：2023-02-23
申请号：US17513581
申请日：2021-10-28
Applicant: Apple Inc.
Inventor： Lixin Shi , Weihong Qiu , Zelin Xu , Zaki Moussaoui , Matthew J. Chabalko
Abstract: An electronic device (that is capable of both transmitting and receiving wireless power) may be physically and inductively coupled to a removable accessory (that only receives wireless power). The electronic device and removable accessory may optionally be placed on a power transmitting device. In response to the electronic device and removable accessory being placed on a wireless power transmitting device, the electronic device may switch from a power transmitting mode (in which the electronic device transmits wireless power to the removable accessory) to a power receiving mode (in which the electronic device receives wireless power from the wireless power transmitting device). To ensure the electronic device detects the wireless power transmitting device and switches to the power receiving mode in this scenario, the electronic device may transmit wireless power in bursts separated by sleep periods while in the power transmitting mode.
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公开(公告)号：US20210384754A1
公开(公告)日：2021-12-09
申请号：US17179647
申请日：2021-02-19
Applicant: Apple Inc.
Inventor： Zelin Xu , Nan Liu , Zaki Moussaoui , Gianpaolo Lisi , Kunal Bhargava , Madhusudanan Keezhveedi Sampath , Matthew J. Chabalko , Robert Scritzky
Abstract: A device in a wireless power system may be operable with a removable accessory such as a case. The device may transmit or receive wireless power through the case while the electronic device is coupled to the case. The case may have a folio shape with a front cover portion that covers the display of the electronic device. The case may have an embedded ferrimagnetic core that relays magnetic flux during wireless power transfer operations. Magnetic alignment structures in the case may position the ferrimagnetic core in the case in a high magnetic flux density region between the power transmitting device and the power receiving device. The ferrimagnetic core relays the magnetic flux between a transmitting coil in the power transmitting device and a receiving coil in the power receiving device. The ferrimagnetic core may be formed in a front portion, a sidewall, or a rear wall of a case.
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公开(公告)号：US20240405609A1
公开(公告)日：2024-12-05
申请号：US18800944
申请日：2024-08-12
Applicant: Apple Inc.
Inventor： Lixin Shi , Weihong Qiu , Zelin Xu , Zaki Moussaoui , Matthew J. Chabalko
Abstract: An electronic device (that is capable of both transmitting and receiving wireless power) may be physically and inductively coupled to a removable accessory (that only receives wireless power). The electronic device and removable accessory may optionally be placed on a power transmitting device. In response to the electronic device and removable accessory being placed on a wireless power transmitting device, the electronic device may switch from a power transmitting mode (in which the electronic device transmits wireless power to the removable accessory) to a power receiving mode (in which the electronic device receives wireless power from the wireless power transmitting device). To ensure the electronic device detects the wireless power transmitting device and switches to the power receiving mode in this scenario, the electronic device may transmit wireless power in bursts separated by sleep periods while in the power transmitting mode.
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公开(公告)号：US20240296989A1
公开(公告)日：2024-09-05
申请号：US18661432
申请日：2024-05-10
Applicant: Apple Inc.
Inventor： Zaki Moussaoui , Zelin Xu , Matthew J. Chabalko , Nan Liu
Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may convey wireless power to, from, or through the case while the device is coupled to the case. The device may have coplanar power transmitting and power receiving coils. The removable accessory may have an embedded switchable ferrimagnetic core and a coil that overlaps the switchable ferrimagnetic core. The switchable ferrimagnetic core may be operable in a first state where the switchable ferrimagnetic core is unsaturated. The switchable ferrimagnetic core may be operable in a second state where the switchable ferrimagnetic core is saturated by a magnetic field from a permanent magnet in a wireless power transmitting device. In the second state, the switchable ferrimagnetic core may have a lower magnetic permeability and higher magnetic reluctance than in the first state.
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