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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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公开(公告)号：US20230275460A1
公开(公告)日：2023-08-31
申请号：US17804922
申请日：2022-06-01
Applicant: Apple Inc.
Inventor： Zelin Xu , Brennan K Vanden Hoek , Antoin J Russell , Daniel J Hiemstra , Eric X Zhou , Tao Pan
IPC: H02J50/00 , H02J50/10 , H01F38/14 , H01F27/255
CPC classification number: H02J50/005 , H02J50/10 , H01F38/14 , H01F27/255
Abstract: An electronic device can include a metallic or non-metallic housing having a window therethrough, a wireless power transfer coil disposed inside the housing adjacent the window, and a non-metallic cover disposed within the window that protects the wireless power transfer coil, the non-metallic cover incorporating at least one ferromagnetic region that improves magnetic coupling of the wireless power transfer coil to a corresponding wireless power transfer coil of another device by providing a high magnetic permeability flux path. The non-metallic cover and the at least one ferromagnetic region have surface finishes selected to visually match or coordinate with the housing.
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公开(公告)号：US20220336143A1
公开(公告)日：2022-10-20
申请号：US17718854
申请日：2022-04-12
Applicant: Apple Inc.
Inventor： Zelin Xu , Sumant Ranganathan , Matthew J. Chabalko , Nan Liu , Eric X. Zhou
Abstract: The disclosure is directed to wireless power systems that include a ferromagnetic core formed of nanocrystalline material disposed on a ferrite. The wireless power systems can have reduced saturation and/or lossiness.
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15.发明申请公开(公告)号：US20210399577A1
公开(公告)日：2021-12-23
申请号：US17180540
申请日：2021-02-19
Applicant: Apple Inc.
Inventor： Weihong Qiu , Zaki Moussaoui , Zelin Xu
Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may have coplanar power transmitting and power receiving coils. The transmitting coil may be positioned within a central opening of the receiving coil. The removable accessory may have an embedded receiving coil configured to receive wireless power from the transmitting coil of the electronic device. The receiving coil of the electronic device may receive wireless power from a power transmitting device such as charging mat. The receiving coil of the electronic device may operate up to a higher maximum power than the transmitting coil of the electronic device. The power transmitting coil and power receiving coil in the electronic device may operate at different power transmission frequencies. To mitigate crosstalk, the power transmitting coil's operation frequency may be a non-integer multiple of the power receiving coil's operation frequency.
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Patent Agency Ranking
公开(公告)号：US20210398733A1
公开(公告)日：2021-12-23
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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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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公开(公告)号：US20240106270A1
公开(公告)日：2024-03-28
申请号：US17952106
申请日：2022-09-23
Applicant: Apple Inc.
Inventor： Daniel J. Hiemstra , Zaki Moustafa , Zelin Xu
CPC classification number: H02J50/005 , H02J50/10 , H05K5/0256
Abstract: Inductive coil assemblies for wireless power transfer can be provided for an electronic device having a slot to receive an accessory and an accessory having an attachment region that is insertable into the slot. The inductive coil assembly of the device can extend along a sidewall of the slot. The inductive coil assembly of the accessory can extend along one side surface of the attachment region of the accessory. The opposite sidewall of the slot and side surface of the attachment region of the accessory can provide mechanical retention features.
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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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