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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：US20250055325A1
公开(公告)日：2025-02-13
申请号：US18781091
申请日：2024-07-23
Applicant: Apple Inc.
Inventor： Jinqian Yu , William R Walitsch , Mikhal S De Jesus , Patrin Illenberger , Sherjeel Shehzad , Kevin J. Hartnett , Rex Jungho Hwang , Nan Liu , Kumar Modepalli , Kunal Bhargava , Oh Jae Lee
Abstract: A first wireless power system having a first transmit device and a first receive device is operable in close proximity to a second wireless power system having a second transmit device and a second receive device. Each transmit device includes a respective coil driven by an inverter and measurement circuitry that controls the power transmitting devices to promote coexistence of the nearby systems.
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Patent Agency Ranking
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：US20240097501A1
公开(公告)日：2024-03-21
申请号：US18062143
申请日：2022-12-06
Applicant: Apple Inc.
Inventor： Nan Liu , Aijun Qin , Ge Wang , Jinqian Yu , Kunal Bhargava , Patrin K. Illenberger , Rex P. Huang
CPC classification number: H02J50/60 , H02J50/10 , H02J50/80 , H02J2207/20 , H04B5/0037
Abstract: A wireless power transmitter can include a wireless power transfer coil designed to magnetically couple with a corresponding coil in a wireless power receiver to facilitate wireless power transfer from the wireless power transmitter to the wireless power receiver, a power converter configured to drive the wireless power transfer coil, and control and communications circuitry coupled to the wireless power transfer coil and the power converter. The control and communications circuitry can be configured to operate the power converter to drive the wireless power transfer coil so as to transfer power to the wireless power receiver in accordance with a negotiated power transfer. Simultaneously during power transfer, the control and communications circuitry can send a polling signal to detect a foreign object including a wireless transponder and reduce or stop wireless power transfer upon receiving a response to the polling signal from a foreign object including a wireless transponder.
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公开(公告)号：US11784511B2
公开(公告)日：2023-10-10
申请号：US17217451
申请日：2021-03-30
Applicant: Apple Inc.
Inventor： Nan Liu , Madhusudanan Keezhveedi Sampath , Robert Scritzky , Gianpaolo Lisi , Saining Ren , Kunal Bhargava , Zaki Moussaoui , Zelin Xu
CPC classification number: H02J50/10 , G06F1/1626 , G06F1/182 , G06F3/038 , G06F3/03545 , H02J7/0042 , H02J7/02 , H02J50/005
Abstract: A personal electronic device (e.g., a tablet computer) may be configured to wirelessly charge an accessory (e.g., a stylus) through a display face of the device. At least a portion of the display face may be transparent to facilitate display viewing. A wireless charging assembly disposed within the enclosure may include a core having one or more windings disposed thereon, which may be configured to generate a magnetic flux above the display face to couple to the accessory. The core may be a pot core, a modified pot core, or may have another shape, such as a PQ core. The one or more windings may be disposed on one or more posts of a pot core, or additionally or alternatively, may be disposed on another portion of the core. A metallic shield may be disposed about the wireless charging assembly, thereby surrounding multiple sides of the wireless charging assembly.
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公开(公告)号：US20210408826A1
公开(公告)日：2021-12-30
申请号：US17217451
申请日：2021-03-30
Applicant: Apple Inc.
Inventor： Nan Liu , Madhusudanan Keezhveedi Sampath , Robert Scritzky , Gianpaolo Lisi , Saining Ren , Kunal Bhargava , Zaki Moussaoui , Zelin Xu
Abstract: A personal electronic device (e.g., a tablet computer) may be configured to wirelessly charge an accessory (e.g., a stylus) through a display face of the device. At least a portion of the display face may be transparent to facilitate display viewing. A wireless charging assembly disposed within the enclosure may include a core having one or more windings disposed thereon, which may be configured to generate a magnetic flux above the display face to couple to the accessory. The core may be a pot core, a modified pot core, or may have another shape, such as a PQ core. The one or more windings may be disposed on one or more posts of a pot core, or additionally or alternatively, may be disposed on another portion of the core. A metallic shield may be disposed about the wireless charging assembly, thereby surrounding multiple sides of the wireless charging assembly.
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公开(公告)号：US20210050750A1
公开(公告)日：2021-02-18
申请号：US17085846
申请日：2020-10-30
Applicant: Apple Inc.
Inventor： Kunal Bhargava , Fady Mishriki , Saining Ren , Daniel Robertson , Nigel James Gray , Rex Huang
Abstract: In an inductively coupled power transmitter a force detector that detects the presence of a potential device by monitoring forces applied to a surface of the power transmitter and activates the inductively coupled power transmitter upon detection of a potential device. An inductively coupled power transmitter having a proximity detector that detects the presence and location of a potential device by monitoring the proximity of devices to a surface of the power transmitter and activates the inductively coupled power transmitter upon detection of a potential device. The transmitter preferably has one or more detection coils each having an area much greater than that of the transmitter coils for detecting the presence of a potential device. An inductively coupled power transmitter including a plurality of transmitter coils proximate a charging surface and a controller selecting and driving a combination of transmitter coils providing the coupling between the power transmitter and a power receiver meeting a selection criteria.
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