Invention Grant
US09084343B2 Electronic device having an inductive receiver coil with ultra-thin shielding layer and method
有权
具有具有超薄屏蔽层的感应接收线圈的电子设备及方法
- Patent Title: Electronic device having an inductive receiver coil with ultra-thin shielding layer and method
- Patent Title (中): 具有具有超薄屏蔽层的感应接收线圈的电子设备及方法
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Application No.: US13319841Application Date: 2010-05-05
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Publication No.: US09084343B2Publication Date: 2015-07-14
- Inventor: Eberhard Waffenschmidt
- Applicant: Eberhard Waffenschmidt
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee Address: NL Eindhoven
- Agent Larry Liberchuk
- International Application: PCT/IB2010/051979 WO 20100505
- International Announcement: WO2010/133995 WO 20101125
- Main IPC: H01F27/36
- IPC: H01F27/36 ; H01F27/28 ; H01F27/02 ; H01F17/00 ; H05K7/00 ; H05K7/14 ; H05K9/00 ; H01F38/14 ; H01F27/34 ; H02J5/00 ; H02J7/02
Abstract:
An electronic device (10,40) which is inductively powered or charged has a receiver coil (12) on which a metal object (24,42) can be placed without causing deterioration of the coil's magnetic field and without generating heat in the metal object. An ultra-thin, flexible, high magnetic permeability metal foil (14) having a thickness of 50 μm or less is provided as a shielding layer between the coil and the object. Radial slits (22) are provided in the shielding layer, which suppress unwanted eddy currents in the layer to reduce power transfer losses and heat generation.
Public/Granted literature
- US20120057322A1 ELECTRONIC DEVICE HAVING AN INDUCTIVE RECEIVER COIL WITH ULTRA-THIN SHIELDING LAYER AND METHOD Public/Granted day:2012-03-08
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