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公开(公告)号：US10277043B2
公开(公告)日：2019-04-30
申请号：US15699965
申请日：2017-09-08
Applicant: Apple Inc.
Inventor： Christopher S. Graham , Demetrios B. Karanikos , Darshan R. Kasar , Paul J. Thompson , Eric S. Jol , Grant S. Haug , Karl Ruben F. Larsson , Stefan A. Kowalski
IPC: H02J5/00 , H02J7/00 , H02J7/02 , H04B5/00 , H05K9/00 , H01F27/28 , H01F27/32 , H02J50/10 , H02J50/40 , H02J50/60 , H02J50/70
Abstract: Embodiments describe a wireless charging device including a housing having a charging surface and first and second walls defining an interior cavity, and a transmitter coil arrangement disposed within the interior cavity and configured to generate a time-varying magnetic flux and an electric field during wireless power transfer, where each of the plurality of transmitter coils has a central axis positioned a lateral distance away from the central axes of all other transmitter coils of the plurality of transmitter coils. The wireless charging mat also includes an electromagnetic shield positioned between the transmitter coil arrangement and the first wall, an interconnection structure positioned within the interior cavity between the transmitter coil arrangement and the second wall, and a ferromagnetic shield positioned within the interior cavity between the transmitter coil arrangement and the interconnection structure, the ferromagnetic shield is configured to redirect the magnetic flux away from the interconnection structure.
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公开(公告)号：US10220447B2
公开(公告)日：2019-03-05
申请号：US14856496
申请日：2015-09-16
Applicant: Apple Inc.
Inventor： Demetrios B. Karanikos , Wayne H. Cowan , Paul J. Thompson , Cheuk Nang Ho
Abstract: Material removal processes of a structure are disclosed. These processes can define several features. For example, metal structure can include an interior recess surrounded by a sidewall. The structure can further include a base portion integrally formed with the sidewall. The sidewall can include an opening extending through the sidewall and into the interior recess. The sidewall can undergo a material removal process to include multiple curved regions. The sidewall, the first curved region, and the second curved region can be polished to include a reflectivity different than a reflectivity of an exterior region of the base portion. A single multi-axes lathe having multiple spindles performs several material removal processes under a continuous machine cutting process. The spindles may include clamping features that allow a first spindle to perform a first operation then pass the metal structure to a second spindle. Additional processes include lapping, polishing, and linear brushing.
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公开(公告)号：US20180091000A1
公开(公告)日：2018-03-29
申请号：US15700025
申请日：2017-09-08
Applicant: Apple Inc.
Inventor： Eric S. Jol , Christopher S. Graham , Demetrios B. Karanikos , Benjamin J. Kallman
CPC classification number: H02J7/0042 , H01F27/288 , H01F27/325 , H02J5/005 , H02J7/025 , H02J50/10 , H02J50/40 , H02J50/60 , H02J50/70 , H04B5/0037 , H04B5/0075 , H04B5/0087 , H05K9/0007
Abstract: Embodiments describe a transmitter coil arrangement for a wireless charging device including: a first layer of transmitter coils, each transmitter coil in the first layer of transmitter coils is arranged in a first radial direction; a second layer of transmitter coils, each transmitter coil in the second layer of transmitter coils is arranged in a second radial direction that is offset from the first radial direction by an angular offset; and a third layer of transmitter coils, each transmitter coil in the top layer of transmitter coils is arranged in a third rotational direction that is offset from both the first and second radial directions by the angular offset, where the second layer of transmitter coils is disposed between the first and third layers of transmitter coils
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