Modular data system with inductive energy transfer

• US 9,780,569 B2
• Filed: 01/11/2013
• Issued: 10/03/2017
• Est. Priority Date: 01/12/2012
• Status: Active Grant

• Current Assignee: Phoenix Contact GmbH & Company KG
• Original Assignee: Phoenix Contact GmbH & Company KG
• Inventors: Scholz, Peter-Dominik, Kalhoff, Johannes
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Yeshaw, Esayas
• Application Number:
  US14/371,644
• Publication Number:
  US 20150008757A1
• Time in Patent Office: 1,726 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/75 for isolation purposes
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04L 25/0266 Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling

Abstract

A device for electrical energy supply and/or data supply of end devices using inductive coupling includes an oblong holding device and a number of adjacently arranged transmitting coils that generate magnetic field lines along the holding device. Structurally narrow end devices have flat receiving coils whose plane is oriented perpendicular to the longitudinal extension of the holding device.

Claims

1. A device for electrical energy supply and/or data supply of stationary end devices, that may transmit and/or receive data signals, using inductive coupling, comprising:

an oblong holding device;

a number of end devices that may have different widths in the direction of longitudinal extension of the holding device and occur as narrow or wide end devices;

wherein the holding device permits the end devices to be held lined up adjacent to one another, even with gaps therebetween, and to this end includes a support rail that permits free positionability of the end devices at any location along the support rail;

a number of adjacently arranged transmitting coils along the holding device, wherein at least some of the transmitting coils have a dimension in the longitudinal direction of the holding device that is approximately the same as the width of narrow end devices;

the transmitting coils are embodied for generating magnetic field lines with a useable portion parallel to the longitudinal extension of the holding device and may be switched individually or to create groups, wherein interconnecting results in virtually longer coils having a common magnetic field in order to be able to handle wider end devices;

at least some of the end devices each have at least one receiving coil that spans a plane transverse to the usable portion of the magnetic field lines of the transmitting coils;

the end devices with their receiving coils may be geometrically allocated to the individual transmitting coils or to transmitting coils switched in groups, in that electromagnetic couplings are used only between pre-determined transmitting coils and receiving coils for energy and/or data supply;

wherein one or a plurality of the end devices is supplied with energy and/or data signals in a contactless manner by current application of individual transmitting coils or of interconnected transmitting coil groups.

2. The device in accordance with claim 1, wherein the windings of the transmitting coils are screw-like and each result in a helical coil having a coil axis parallel to the longitudinal extension of the support rail of the holding device.

3. The device in accordance with claim 1, wherein the windings of the at least one receiving coil run in a helix and surround an opening that has an axis parallel to the longitudinal extension of the support rail of the holding device.

4. The device in accordance with claim 1, wherein at least some of the transmitting coils are each provided with a ferrite structure that extends between the cover of the transmitting coil and the adjacent parts of the holding device for guiding and shielding the field lines.

5. The device in accordance with claim 1, wherein at least some of the receiving coils have a width measured in the longitudinal direction that is only a fraction of the width of each transmitting coil in order to attain relatively free arrangeability of narrow end devices along the support rail of the holding device.

6. The device in accordance with claim 1, wherein the support rail of the holding device also forms the support for the current and data signal lines of the transmitting coils.

7. The device in accordance with claim 1, wherein the arrangement of the transmitting coils has a gap along the holding device in order to accommodate an inactive device.

8. The device in accordance with claim 7, wherein the gap along the holding device is spanned by an inserted bridge in order to forward feed voltage and/or data signals along the holding device.

9. The device in accordance with claim 1, wherein transmitting coils and associated receiving coils are laid out or connected such that resonance occurs between coupled coils when there is a suitable excitation frequency.

10. The device in accordance with claim 1, wherein the transmitting coils are connected to sensors that detect coupling effects in order, when there is no coupling or a weak coupling between transmitting coil and receiving coil, to keep the affected transmitting coil out of operation.

11. The device in accordance with claim 1, wherein the holding device includes means provided on the end devices for latching the end device in question to the support rail.