Shielded power coupling device

A power coupling and shielding technology, applied in circuits, inductors, electrical components, etc., can solve problems such as reduced power transmission efficiency, increased leakage inductance, and undesired radio frequency (RF) radiation.

Active Publication Date: 2010-01-27
ANLOGIC CORP (US)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, lack of adequate shielding can lead to undesirable RF (radio frequency) e

Method used

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  • Shielded power coupling device
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Examples

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[0041] The present invention relates to a shielded power coupling device, and more specifically, to a shielded power coupling device that can reduce radio frequency radiation and / or other electromagnetic interference when inductively transmitting power in a device environment, To reduce leakage inductance and / or improve efficiency, the equipment environment can be, for example, a computer tomography (CT) scanner that can be used for medical, security, or similar purposes, or it can be other equipment that needs to be able to A device environment where power is transmitted between bodies that are relatively rotationally joined.

[0042] The terms "electromagnetic interference", "radio frequency (RF) radiation" and similar terms used in the text, when the interference from surrounding equipment affects the operation of the power coupling device according to the present invention, these terms can be the broadest The meaning is understood to include the interference from surrounding ...

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Abstract

Axisymmetric solid of revolution derivable from section at figure 5 is generally toroidal with electric current(s) in windings (110, 160) preferably flowing circumferentially along major circle(s) during power coupling device operation. Current(s) in windings (110, 160); current(s) in half-shields (120, 170); and the volume of space swept out by shield airgap(s) (101) emerge from plane of paper perpendicularly at figure 5 but as these emerge therefrom they curve to follow toroidal major circle(s). Cores (115, 165) preferably shunt and align magnetic flux such that magnetic field lines escape therefrom primarily only in region(s) of core airgap(s) and such that magnetic flux loops lie in planes of toroidal minor circle(s). Half-shield(s) (120, 170) preferably have electrically conductive material(s) distributed therein as is sufficient to substantially cancel magnetic flux lines impinging thereon before effects of such impinging magnetic flux lines would reach shield airgap(s) (101) and/or outer surface(s) of half-shields (120, 170).

Description

[0001] Research sponsored by the U.S. Federal Government: [0002] Not applicable [0003] Name of party to collaborative research agreement: [0004] Not applicable [0005] Citations of material on the CD are incorporated by: [0006] Not applicable [0007] Cross References to Related Applications [0008] This application is a continuation of application under 35 USC 120 claiming patent application number 10 / 787270 filed February 26, 2004 entitled "Power Coupling Apparatus" and pending Priority to the commonly-owned U.S. patent application 10 / 787270, which also claims application number 60 / 450038 under 119(e) of title 35 of the United States Code, entitled "Contactless Power Coupling Apparatus", priority of the expired U.S. provisional application filed on February 26, 2003. Additionally, the contents of US Patent Application 10 / 787,270 and US Provisional Application 60 / 450,038 are incorporated herein by reference in their entirety. technical field [0009] The pres...

Claims

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Application Information

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IPC IPC(8): H01F21/06
CPCA61B6/56H01F38/18H01F27/367H01F27/36H01F27/363
Inventor J·M·多布斯
Owner ANLOGIC CORP (US)
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