DEVICE FOR INDUCTIVELY TRANSFERRING ELECTRICAL ENERGY AND/OR DATA, AND METHOD FOR PRODUCING SUCH A DEVICE

Abstract

A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one positionable secondary-sided recipient includes at least one primary-sided coil arrangement, which inductively interacts with at least one secondary-sided coil arrangement. Meander-shaped windings of a predeterminable winding number of the primary-sided and/or secondary-sided coil arrangement are arranged on at least one flexible carrier by embroidering a high frequency strand, and the meander-shaped windings have straight courses in the region of crossovers of the embroidered high frequency strands.

Claims

1. A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one positionable secondary-sided recipient comprising at least one primary-sided coil arrangement, which inductively interacts with at least one secondary-sided coil arrangement; wherein meander-shaped windings (400; 510, 520, 530) with a predeterminable winding number of the primary-sided and/or secondary-sided coil arrangement are arranged on at least one flexible carrier by embroidering a high frequency strand (405), and the meander-shaped windings (400; 510, 520, 530) have straight courses in the region of crossovers (410) of the embroidered high frequency strands (405).

2. The device according to claim 1, wherein the meander-shaped windings (400; 510; 520; 530) are not embroidered in the region of the crossovers (410).

3. The device according to claim 1, wherein the individual windings of several identical meander-shaped windings (510, 520, 530) are arranged on the at least one flexible carrier in relation to at least one folding line (501) in such a way that the meander-shaped windings (510, 520, 530) come to rest one above the other offset in relation to one another by folding together the at least one flexible carrier along the at least one folding line (501).

4. A method for producing a device for inductively transferring electrical energy and/or data, wherein a primary-sided meander-shaped winding (100) and at least one secondary-sided meander-shaped winding (120; 400; 510, 520, 530) are arranged in such a way on flexible carriers by embroidering high frequency strands that the meander-shaped windings have straight courses in the region of crossovers.

5. The method according to claim 4, wherein the meander-shaped windings (400; 510, 520, 530) are not embroidered in the region of the crossovers (410).

6. The method according to claim 4, wherein several identical secondary-sided meander-shaped windings (510; 520; 530) are arranged on at least one carrier by embroidering.

7. The method according to claim 6, wherein the secondary-sided meander-shaped windings (510, 520, 530) are embroidered relative to at least one folding line (501) onto the at least one carrier in such a way that the secondary-sided meander-shaped windings (510, 520, 530) come to rest one above the other offset in relation to one another by folding together the carrier along the at least one folding line (501).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other objects and features of the invention will become apparent from the following detailed description considered in connection with the accompanying drawings. It is to be understood, however, that the drawings are designed as an illustration only and not as a definition of the limits of the invention.

[0018] In the drawings,

[0019] FIG. 1 shows primary-sided and secondary-sided windings for energy transfer to positionable recipients;

[0020] FIG. 2 schematically shows a circuit and offset windings for energy transfer;

[0021] FIG. 3 schematically shows an autoresonant Royer oscillator having several serially compensated secondary sides for inductively transferring energy and data;

[0022] FIG. 4 shows a meander winding in a simple design having the winding number 3 according to an exemplary embodiment of the invention; and

[0023] FIG. 5 shows the arrangement of three meander windings each having the winding number 3, which come to rest one above the other after folding the flexible carrier along a folding line.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0024] In FIG. 1, the energy transfer to positionable recipients is schematically depicted.

[0025] Energy is inductively transferred from a primary-sided meander-shaped winding 100 to secondary-sided meander-shaped windings 120. Both the primary-sided winding and the secondary-sided winding are arranged on a flexible carrier. The meander-shaped winding system of the primary-sided winding is exemplarily depicted in FIG. 1 having one winding. The secondary-sided windings are exemplarily depicted having the winding number 3. Here, the route from left to right corresponds to a length of a rod and the route from above to below to the length of the peripheral surface of the cylinder.

[0026] The inductive energy transfer can take place, for example, with a circuit depicted in FIG. 2. Here, three secondary-sided inductivities 220, 221, 222 lie opposite one primary-sided inductivity 210. A compensation circuit and a rectifier 230, 231, 232 are allocated to each of the secondary-sided inductivities. Depending on the position of the recipient (rotationally), the windings are passed through differently by the magnetic field.

[0027] Due to the geometric construction, one winding will always have the highest induced voltage or the greatest magnetic coupling to the primary side. An intermediate circuit 250 is then supplied by this winding, whereby a constant energy transfer can take place.

[0028] A different kind of energy transfer is depicted in FIG. 3, which shows a so-called autoresonant Royer oscillator having several serially compensated secondary sides. Three secondary inductivities 320, 321, 322 and corresponding rectifiers 330, 331, 332 are allocated to a primary inductivity 310. The advantage of this circuit is that 1 to n recipients having different power can be placed on a rod or on a surface, for example. No additional regulation measures are necessary by an autoresonant power electronics system. The resonance frequency is independent of load. The recipients function in the auxiliary operation.

[0029] The windings provided for this are depicted in FIGS. 4 and 5.

[0030] In FIG. 4, a meander winding 400 having the winding number 3 is depicted. This meander winding 400 is generated by embroidering a high frequency strand 405 using an inherently known embroidery machine onto a flexible material, for example fabric or a different carrier material. For embroidering the strand, it is necessary to draft a winding pattern, which, on one hand, can be converted by the embroidery machine and which, on the other hand, is not subject to damage during the embroidering process. In particular in the region of the inductive energy transfer, namely no errors can occur when embroidering. Here, error means that the high frequency strand is damaged by the embroidery machine. Moreover, when applying the high frequency strand, i.e. when winding, the mechanical load may not be so great such that the quality of a coil is disadvantageously reduced. Moreover, during the embroidering process, the case must not arise that individual single wires are severed, which leads to a very large deterioration in coil quality, whereby the produced product can no longer be used for energy transfer. Such a puncture when embroidering can occur, in particular, with very complex arrangements. The probability of such a puncture increases with the complexity of the arrangement.

[0031] The winding depicted in FIG. 4 is a meander-shaped arrangement for a three-dimensional construction, which has the great advantage that crossovers 410 are minimized. The crossovers 410 always lie within straight courses of the strand. The embroidering process is here chosen in such a way that a customary embroidery machine skips these regions during the embroidering process. The strand remains stationary without additional punctures, which lie in the region of the crossovers.

[0032] In order to ensure the necessary proximity of single strands to one another, according to a particularly advantageous embodiment, which is depicted in FIG. 5, it is provided that identical meander-shaped windings 510, 520, 530 are arranged on flexible carriers relative to a folding line 501 or (not depicted) further folding lines in such a way that the meander-shaped windings 510, 520, 530 come to rest one above the other offset in relation to one another after folding together the flexible carriers along the line. In this way, very complex winding structures are generated, which can be safely and reliably produced.

[0033] Such an arrangement enables a very effective transfer of electrical energy and of data.

[0034] Although only a few embodiments of the present invention have been shown and described, it is to be understood that many changes and modifications may be made thereunto without departing from the spirit and scope of the invention.