EP4241345A1

EP4241345A1 - Current sensor and kit-of-parts

Info

Publication number: EP4241345A1
Application number: EP21759089.2A
Authority: EP
Inventors: Christian Walter; Anja SCHRÖPFER; Victor FRANKE; Fakher AHMED
Original assignee: DAW SE
Current assignee: DAW SE
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-09-13
Also published as: CN117916961A; WO2023016661A1

Abstract

In a current sensor (8, 8'), in particular a contact-making adapter, for an electrical load (100) for attachment to a carrier system (3) with a large number of longitudinal electrical conductor tracks (5, 6) which run parallel to one another and have an alternating electric potential, wherein the current sensor (8, 8') comprises at least three, preferably at least five and particularly preferably precisely five, electrically conductive contact elements (81, 82, 83, 84, 85) with a cross-sectional width (p), in particular an operative diameter, wherein the contact elements (81, 82, 83, 84, 85) form a polygon with a height (H), provision is made for the contact elements (81, 82, 83, 84, 85) to have a contact element length (n), such as a needle length, for the conductor tracks (5, 6) to pass through.

Description

Current pickups and kit-of-parts

Description

The invention relates to a current collector for an electrical consumer to be attached to a carrier system with a multiplicity of longitudinal electrical conductor tracks running parallel to one another and having alternating electrical potential. In particular, the current pickup implements a contacting adapter. The invention also relates to a kit of parts that contains at least one current collector and a carrier system that is equipped with a large number of longitudinal electrical surface conductor tracks that run at a transverse distance from one another and have a transverse width.

US 2009/0219712 Ai describes a lighting system with an electrically conductive wallpaper. The wallpaper can be applied to a building wall or ceiling. A large number of electrically conductive strips are provided on the wallpaper. Electrical lamps can be connected to the conductive strips by contact pins. The strips and contact pins are provided at a certain distance from one another, so that strips of different potential can be brought into contact with different contact pins. Using the lighting system is error-prone. When attaching a light source, the electrical connection required for the operation of the light source is often not closed. In the worst case, short circuits can occur.

Another lighting system with an electrode device and an electric light source is known from US 2010/0327744 Ai. The electrode device comprises two electrodes of different polarity, which engage one another in the manner of a comb, and a shield covering the electrodes. With the shielding, the electrode device can form a wall or ceiling facade. The bulb has a base with a number of needle-shaped contact elements to penetrate through the shield to the electrodes. The contact elements are arranged in a triangular configuration. The shape and size of the electrodes and thus of the electrode device is fixed invariably. Individual custom-made products lead to very high costs and are therefore not very common. Even minor damage to the electrode device often leads to short circuits between the two electrodes and, as a result, to a complete failure of the lighting system.

The object of the present invention was to overcome the disadvantages of the prior art, in particular to provide a current collector that is simple, reliable and safe to use, in particular independent of the position and orientation on a flat carrier system with electrical conductor tracks of different potentials In particular, the current collector should be reversibly attachable, preferably without impairing the aesthetics of a carrier system.

Accordingly, a current collector, in particular a contacting adapter, for an electrical consumer for attachment to a carrier system with a large number of longitudinal electrical conductor tracks running parallel to one another and in each case at a transverse distance (t) from one another and having a transverse width (b) with alternating electrical potential was found, comprising at least three , preferably at least five and particularly preferably exactly five, electrically conductive contact elements with a cross-sectional width (p), in particular an operative diameter, the contact elements forming a polygon with a height (H), the contact elements having a contact element length (n), such as a needle length , Have for penetrating the conductor tracks.

Furthermore, a current collector, in particular a contacting adapter, for an electrical consumer for attachment to a carrier system with a large number of longitudinal electrical conductor tracks running parallel to one another and in each case at a transverse distance (t) from one another and having a transverse width (b) with alternating electrical potential was found, comprising at least three, preferably at least five and particularly preferably exactly five, electrically conductive contact elements with a cross-sectional width (p), in particular an operative diameter, set up and designed for reversible attachment by means of the contact elements on a substrate surface, the cross-sectional width (p), in particular the operative Diameter of the contact elements is smaller than, in particular at most half as large as, the transversal distance (t), the contact elements being in a circular ring with a ring width (RB) and an outer circular diameter (AK), are arranged in particular on a circle with the diameter (KD), and form a polygon with a height (H), the transverse distance (t) being smaller than the transverse width (b) and at least one pair of contact elements having a contact distance (k) to one another which is greater than the sum of the transversal width (b) of an area conductor track and the transversal distance (t) of the conductor-free area between adjacent area conductors and which is smaller than the sum from twice the transverse width (b) of adjacent surface conductors and the transverse distance (t) of the conductor-free surface between adjacent surface conductors, and/or, in particular and, where the following applies to the height H of the polygon: H > (b + 2 xt), the contact elements in particular have a contact element length (n), such as a needle length, for penetrating the conductor tracks.

Accordingly, a current collector according to the invention is provided for an electrical consumer for attachment to a carrier system with a plurality of longitudinal electrical conductor tracks each running parallel or essentially parallel to one another at a transverse distance (t) and having a transverse width (b) with alternating electrical potential. The potential difference between adjacent conductor tracks can preferably be in the low-voltage range. The current pickup according to the invention can in particular be a contacting adapter for the electrical load. The electrical load is preferably designed and set up for operation in the low-voltage range. The current collector according to the invention comprises at least three, preferably at least five and particularly preferably exactly five electrically conductive contact elements. According to another preferred embodiment, the contacting adapter can have exactly seven electrically conductive contact elements. The contact elements can be of the same type and/or uniform. Each contact element is designed and set up to be able to be brought into contact with an electrical conductor track of the carrier system in order to implement an electrical connection from the conductor track to the current collector according to the invention. The electrically conductive contact elements have a cross-sectional width, in particular an operative diameter. In a preferred embodiment, the electrical contact elements can have an essentially circular cross-section, in which the circle diameter as the operative diameter corresponds to the cross-sectional width. Other cross-sectional shapes of an electrically conductive contact element, for example triangular, square or polygonal, are conceivable, with a largest diagonal generally being able to define the cross-sectional width of the respective contact element cross-section. The contact elements form a polygon with a height. The height of a polygon is generally defined as the greatest distance between a base edge of the polygon and a diametrically opposite second polygon edge or polygon vertex.

According to the invention, it is provided that the contact elements have a contact element length for penetrating the conductor tracks, like a needle length. Additionally or alternatively, the contact elements can have a pointed end for penetrating into the carrier layer and/or have for penetrating the conductor tracks. The contact elements of the current collector according to the invention are preferably aligned parallel to one another, so that all contact elements of the current collector have the same entry and/or penetration direction. The contact elements preferably have essentially the same contact element length. The length of the contact element preferably protrudes from an in particular flat outer surface of the current collector, preferably orthogonally to the outer surface.

According to a preferred embodiment, the contact elements are needle-shaped, in particular with a conically shaped insertion end. The shank can alternatively be pyramid-shaped, for example. In particular, at least one, at least two or all of the contact elements of a current collector according to the invention can be needle-shaped. Alternatively or additionally, the contact elements can be designed in the form of pins, in particular with a cylinder section or consisting of a cylinder section. The cylinder section has a preferably constant cross-sectional shape, wherein the cross-sectional shape can be, for example, circular, elliptical, triangular, square or polygonal, in particular polygonal with the same edge lengths. In particular, it can be provided that the contact elements are needle-shaped, with a round cylinder section and a conically shaped end. Alternatively, the contact elements can be obelisk-shaped, with a polygonal, e.g. quadrangular, cylinder section and a pyramid-shaped end.

In one embodiment of the current collector according to the invention, the cross-sectional width, in particular the operative diameter, of the contact elements is in the range from 0.25 to 1.5 mm, in particular in the range from 0.5 mm to 1.0 mm. In particular for the transmission of currents in the low-voltage range, it has been shown that such cross-section widths have good current-carrying and heating properties.

Alternatively or additionally, the length of the contact element, preferably the length of the needle, is in the range from 0.5 to 10 mm, in particular in the range from 1.0 to 5.0 mm. All contact elements of the current collector preferably have essentially the same contact element length. The cross-sectional width is preferably smaller than the length of the contact element. As a result, when the contact element is inserted into the carrier system, in particular the planar conductor, the mechanical adhesion of the contact element to the carrier system can be ensured without having to accept an aesthetic impairment. According to one embodiment of a current collector according to the invention, the contact elements each have a peripheral contact surface which is designed and set up to provide an electrical connection of one of the contact elements to a conductor track penetrated by this contact element. All contact elements preferably have a contact surface. The contact surfaces of the multiple contact elements are preferably provided in the same longitudinal extension area of the different contact elements. The contact surface is preferably formed on the entire circumference of the respective contact element, in particular along a longitudinal extent of at least 50%, preferably at least 75% or at least 90% of the length of the contact element. The contact surface comprises or consists of at least one electrically conductive material. In particular, the conductive material is selected from the group consisting of brass, chromium, nickel, silver, copper and gold. The contact surface is preferably gold-plated, for example electroplated with gold. In particular, the contact surface has a surface layer comprising or consisting of gold with a layer thickness of less than 0.5 μm, in particular less than 0.2 μm or less than 0.1 μm.

In a preferred embodiment of a current pickup according to the invention, the contact elements are arranged in a circular ring with a ring width and an outer circular diameter. In particular, the contact elements are arranged on a circle with a predetermined diameter. The outer circular diameter is in particular no more than 6.5 cm, preferably no more than 5 cm. The arrangement of the contact elements in the area of a circular ring, preferably on a predetermined circle, allows a large distribution of the various contact elements to be implemented in a small space.

According to a preferred embodiment of the current collector according to the invention, the ring width of the circular ring is in the range from 0.2×b to 1.5×b, in particular in the range from 0.3×b to 1.2×b, where b represents the transversal width of the surface conductor tracks. It may be preferable for the ring width to be smaller than a transversal width b of the conductor tracks, in particular surface conductors, of the carrier system, in which case the ring width in particular can be selected to be less than or equal to the transverse distance t between adjacent surface conductors. Alternatively or additionally, the circle diameter is in the range from 1.0 xb to 3.0 xb, in particular in the range from 1.2 xb to 2.5 xb. The circle diameter is preferably at least as large as the sum of a transverse width b and a transverse distance t of the carrier system. In one embodiment of the current pickup according to the invention, adjacent contact elements are essentially the same distance apart, with the distance between adjacent contact elements (along the circumference of the circular ring and/or polygon) in particular being no more than ±10%, preferably no more than ±5%, differs from each other. In particular, the polygon can be equilateral and the contact elements lie on the corner points of the polygon. The polygon is preferably a triangle, pentagon or heptagon. It has been found that equilateral polygons with contact elements on all of their corner points are particularly well suited for covering a large area with the current collector while at the same time having the smallest possible current collector size. Furthermore, it has surprisingly been shown that arranging the various contact elements at polygon corners, in particular for a pentagon or a heptagon, can solve the so-called "clean-through" problem, according to which electrical transmission from the carrier system to the adjacent conductor tracks a consumer could be omitted by a current collector according to the invention with an unfavorable orientation and/or arrangement of the current collector if no contacting of at least two conductor tracks with a potential difference is ensured. It is clear that the contact elements forming the polygon are expediently arranged at the corners of the polygon. At least one or precisely one contact element can preferably be arranged within the polygon, in particular in the center point of the polygon, which is advantageous in the case of a triangle, for example.

According to a particularly preferred embodiment, the current pickup according to the invention comprises a rectifier circuit. The rectifier circuit is preferably designed and set up to ensure the power supply of the load with a predetermined direct current, regardless of which of the plurality of contact elements is in electrical contact connection with a surface conductor track of a first potential and which other of the plurality of contact elements is in electrical contact connection with a surface conductor track of a second potential.

In a particularly expedient embodiment of a current pickup according to the invention, the rectifier circuit is designed and set up to transfer an electrical potential difference between precisely one or at least a first of the at least three electrically conductive contact elements and precisely one or at least a second of the at least three electrically conductive contact elements to a current output transferred to. It is conceivable that a current collector with more than one contact element with a first conductor track and with one or more second contact elements with a second conductor track is connected to other potential levels.

According to a particularly suitable embodiment of the current pickup according to the invention, the rectifier circuit is designed and set up to transmit an electrical potential difference from any pair of at least three, in particular at least five, exactly five or exactly seven, electrically conductive contact elements to the current output. With the help of such a rectifier circuit, the current collector can preferably be designed to always ensure a power supply to the load, regardless of the position and orientation of the current collector and the contact elements provided thereon in relation to the large number of conductor tracks of the carrier system.

According to a particularly expedient embodiment of the current pickup according to the invention, which can be combined with the previous ones, the current collector can comprise a multiplicity of diodes, preferably semiconductor diodes, in particular several of the multiplicity of diodes in a circular ring with a diode ring width and an outer diode circuit - Are arranged diameter, in particular on a diode circuit with a predetermined diameter. The outer diode circular diameter is in particular no more than 6.5 cm, preferably no more than 5 cm. By arranging the multiple diodes in a diode ring, in particular on a diode circuit, the greatest possible spacing of the heat-generating diodes from one another can be achieved. This can extend the service life. Thermally induced impairments of the carrier system can also be prevented.

In particular, one embodiment of a current pickup according to the invention with a large number of diodes provides that the diodes, in particular all diodes of the rectifier circuit or the current pickup, have a forward voltage of no more than 1 V, in particular no more than 0.75 V, preferably no more than 0.5V. The diodes are preferably rectifier diodes, in particular Schottky diodes.

In a preferred embodiment of a current sensor according to the invention, the plurality of diodes comprises or consists of a first group of diodes in electrical contact with a first pole of the current output and a second group of diodes in electrical contact with a second pole of the current output. The rectifier circuit is preferably designed in such a way that the potential difference is mapped to the first and the second pole of the current output, which is generated by the current pickup on the pair Contact elements applied. It may be particularly preferred that the first group of diodes is arranged in a first, preferably semicircular, segment and that the second group of diodes is arranged in another, preferably semicircular, segment on a diode support structure, such as a printed circuit board, with preferably the current output is arranged between the first segment and the other, second segment. By dividing the diodes into two groups, in particular a cathode group and an anode group, and arranging these two groups in different segments on the current collector, particularly efficient heat management can be implemented so that the current collector can be kept as small as possible Diodes heat can be easily released from the current collector to the environment. In particular, the segmentation can largely prevent mutual heating of directly adjacent diodes.

A particularly suitable embodiment of the current pickup according to the invention comprises at least one magnetic holding component for fixing the current pickup to a magnetic or magnetizable holding position of the carrier system. The magnetic holding component can be provided in particular on an underside of the current collector, from which the electrical contact elements protrude.

In a preferred embodiment of the current collector according to the invention, which can be combined with the others, the current collector for at least one electrical load comprises at least one magnetic holding component for fixing the current collector to a magnetic or magnetizable holding position of the carrier system. In particular, the current collector is equipped with a magnetic underside or rear side, which faces or can be turned towards the holding layer. The attachment of the current collector to the carrier system can be improved with the aid of the magnetic adhesive component and, in particular, penetration of the planar conductor tracks with the contacts of the current collector can be ensured.

According to a suitable embodiment of a current pickup according to the invention, which can be combined with the previous ones, the current pickup has at least two connection receptacles, such as connection terminals, which are designed and set up to each receive at least one electrical line of an electrical consumer.

In another embodiment of a current collector according to the invention, which can be combined with the others, the current collector comprises at least two connection receptacles, such as connection terminals, which are designed and set up for this purpose, at least in each case take up an electrical line of an electrical consumer. For example, such a current collector can be provided to supply a conventional wall or ceiling lamp with electrical energy by connecting the electrical supply lines of the conventional lamp to the connection terminals or other connection receptacles, for example in the manner of a luster terminal.

The invention also relates to a kit of parts that contains a current collector according to the invention (as described above) and a carrier system that is equipped with a large number of longitudinal electrical surface conductor tracks each running at a transverse distance t from one another. The surface conductors have a transversal width b.

The kit of parts preferably comprises at least one current collector for an electrical consumer, comprising at least two or three, preferably at least five and particularly preferably exactly five, electrically conductive contact elements, designed and set up to interact with two adjacent electrical surface conductors of the carrier system. In particular, the contact elements of the current collector are matched to the surface conductors in such a way that at least two of the contact elements of the same current collector can be brought into contact with different, in particular adjacent, surface conductors. For this purpose, for example, the size, shape and spacing of the contact elements can be matched to the size, shape and spacing of the planar conductors.

A carrier system can preferably be formed as a flat and/or quasi-two-dimensional carrier layer. The carrier layer can have, for example, a longitudinal longitudinal extension and a transversal transverse extension that are very much larger than a thickness of the carrier layer. In the case of a kit of parts, for example for a building wall surface function system, the longitudinal extension can correspond to the vertical direction, the transversal transverse extension can correspond in particular to a primary horizontal direction and/or the thickness of the carrier system, in particular the carrier layer, can correspond to a depth direction or correspond to the secondary horizontal direction. Alternatively, in a kit of parts, for example for a building ceiling surface function system, the longitudinal extension can correspond to a first, in particular, primary horizontal direction, the transversal transverse extension can correspond to a second, in particular, primary horizontal direction and/or the thickness of the carrier system, in particular of the carrier layer , may correspond to a vertical direction. The carrier layer can be formed, for example, as web material or as a surface coating. A planar conductor track can generally refer to an electrically conductive track whose main longitudinal extension direction is significantly greater than its thickness, in particular at least a hundred times greater, preferably at least a thousand times greater. Alternatively or additionally, a planar conductor track can generally refer to an electrically conductive track that has a transverse width across the main direction of extent that is significantly smaller than its longitudinal main extent, in particular at least 10 times smaller or at least a hundred times smaller, and which is significantly larger than the thickness of the Surface conductor track, in particular at least 10 times larger or at least a hundred times larger. For example, a planar conductor can have a main longitudinal extension of at least 1 m and a thickness of less than 0.5 mm, in particular less than 0.1 mm, and optionally a transversal width in the range from 1 mm to 10 cm, preferably in the range 1 cm up to 5 cm. In a preferred embodiment, the flat conductor track can be designed as a full-surface conductor track. Alternatively, it is conceivable that the flat conductor track is composed of a large number of thin adjacent conductor track sections, which in particular are at least partially in the form of a lattice, chessboard pattern, grid shape, network shape and/or meandering shape, and which together, for example as a network, form the flat conductor track. The distance between such adjacent conductor track sections of a surface conductor track is always smaller than a contact point. In combination with the preferred embodiment described below, which cooperates with at least one current collector with a plurality of contact elements, the distance between such adjacent conductor track sections of a planar conductor track is always smaller than the greatest cross-sectional width of the contact elements. The cross-sectional width is preferably in the range from 0.25 mm to 1.5 mm, in particular in the range from 0.4 mm to 1 mm, preferably in the range from 0.5 mm to 0.8 mm.

The at least one, in particular the multiplicity, of electrical planar conductors can be present on the front side of the carrier system, on the rear side of the carrier system and/or be embedded in the carrier system. It is conceivable that a first group of surface conductors is on the front of the carrier system, that a second group of surface conductors is on the back of the carrier system and/or that a third group of surface conductors is embedded in the carrier system. In particular, all of the multiplicity of electrical planar conductors can be present on the front or rear of the carrier system or embedded in the carrier system.

Of particular advantage in the present invention is that attaching the kit-of-parts according to the invention does not necessarily require the use of electricians or requires trained specialists in the electrical field, but can also be carried out, for example, by personnel from the painting trade or drywall construction.

In a preferred embodiment of the kit-of-parts, the contact elements have a cross-sectional width, in particular an operative diameter, which is smaller than the transversal distance between adjacent surface conductor tracks, in particular corresponds essentially to half of the transversal distance and/or is at least 0.5 mm , preferably at least 1 mm, is smaller than the transverse distance.

According to one embodiment of the kit of parts according to the invention, the transversal distance between adjacent electrical surface conductors is smaller than the transverse width of these surface conductors. In particular, the transverse width measures at least 45%, preferably at least 65%, of the height of the polygon.

According to a further embodiment of the kit-of-parts according to the invention, which can be combined with the previous ones, at least one pair of contact elements of the same current collector has a contact distance to one another. It is clear that the pair of contact elements can consist of a first contact element connectable or connected to a first surface conductor track and a second contact element connectable or connected to a second surface conductor track. Furthermore, it should be clear that the current collector can be equipped, for example, with a large number of, for example three, contact elements which can be combined permutationally as a number of pairs, for example three pairs. In another example of a current pickup with five contact elements, for example, the contact elements can be combined in ten pairs in a permutation manner. The contact distance is preferably greater than the sum of the transversal width of an electrical area conductor track and the transversal distance of the conductor-free area. In particular, the contact spacing is smaller than the sum of twice the transversal width of an electrical surface conductor track and the transversal spacing of the conductor-free surface. In particular, the following formula can apply for the height of the polygon, where H is the height of the polygon, b is the transverse width of the interconnects, and t is the transverse distance between adjacent interconnects: H>(b+2×t).

The contact spacing can preferably essentially correspond to the transversal module, in which case the transversal module in particular can be dimensioned slightly larger than the contact spacing in order to ensure that the current collector can be attached in a short-circuit-proof manner, taking into account the cross-sectional size of the contact elements and/or to minimize the probability that no circuit will be closed when connecting the current collector to the carrier system with the surface conductor tracks. In particular, it can be assumed that the contact spacing and transverse modulus are essentially the same if the contact spacing differs from the transverse modulus by no more than ±20%, in particular by no more than ±10%, preferably by no more than ±5%. It may be preferred that the contact spacing is at least as large as the transverse modulus. The contact spacing is particularly preferably 0% to 20% larger, in particular 0.1% to 10% larger, preferably 0.5% to 5% larger, compared to the transverse modulus.

It can be preferred that in a kit of parts according to the invention, the contact elements have a contact element length that is greater than a track thickness of the conductor tracks and/or greater than a system thickness of the carrier system, with the contact element length in particular being at least as great as the sum of web thickness and system thickness.

In a preferred embodiment of the kit of parts according to the invention, which can be combined with the previous ones, the multiplicity of surface conductors has an essentially uniform transverse width. In particular, the multiplicity of surface interconnects can also have essentially uniform transversal distances between adjacent surface interconnects. Alternatively or additionally, the multiplicity of surface conductors has an essentially uniform longitudinal extension, which can preferably correspond to a room height, length or width. In addition, it can be preferred that the multiplicity of adjacent surface conductor tracks run parallel or essentially parallel. In particular, a regular and/or uniform arrangement of the conductor tracks can be defined by the carrier system.

In particular, in a kit of parts according to the invention, the multiplicity of adjacent surface conductor tracks are each separated from one another by a conductor-free surface. According to a preferred embodiment, in particular in the area of the carrier system, the plurality of adjacent surface conductor tracks are each separated from one another, in particular electrically insulated, by a conductor-free surface. Preferably, a large number of surface conductors, in particular all surface conductors, are electrically separated from one another, in particular insulated, in the region of the carrier system by a conductor-free surface. In the case of adjacent surface conductor tracks which abut one another and which accordingly have a transversal distance (t)=0, an electrically conductive contact between these conductor tracks can be achieved, for example, by providing a thin electrically non-conductive layer or a thin electrically non-conductive film strips, which are each oriented essentially perpendicular to the surface conductors and therefore have no significant transverse expansion, or a partial sheathing of the abutting edges of adjacent surface conductors with an electrically non-conductive material, e.g. a plastic partial sheathing, ie a plastic sheathing only of the edge area. Such kit-of-parts according to the invention are preferred in which the electrical insulation of adjacent surface conductors is brought about via conductor-free surfaces between these surface conductors. In the case of these kit-of-parts according to the invention, the transverse distance (t) is accordingly greater than zero.

Electrical connections between, in particular adjacent, surface conductors can preferably be closed by electronic components arranged transversely to the surface conductors, for example a current collector. The carrier system is preferably free of electrical cross-connections between surface conductor tracks arranged next to one another, in particular adjacently. In particular, by separating an electrical connection of different surface conductors into additional components, such as the contact strip, a functional object and/or a current collector, it can be achieved that the consequences in the event of damage or incorrect assembly of the surface fusion system can be limited to a small area without the impairing the general functionality of the entire carrier system.

In a preferred embodiment of the kit of parts according to the invention, it is provided that the adjacent surface conductors of the plurality of adjacent surface conductors have essentially the same lateral distance (transverse distance) from one another and/or that the conductor-free surfaces between adjacent surface conductors of the plurality of adjacent surface conductors are Essentially have a uniform width. It can be preferred that the carrier system, which in the area of a transverse width of at least 20 cm, in particular at least 50 cm, preferably at least 75 cm, particularly preferably over the entire transverse width of the carrier system, transversely, preferably orthogonally, to the longitudinal direction has at least one longitudinal electrical surface conductor track per 10 cm transverse width, in particular per 5 cm transverse width, preferably per 3 cm transverse width, of the carrier system.

According to a likewise preferred embodiment of the kit of parts according to the invention, which can be combined with the previous one, the transversal distance is in the range of at least 1 mm to 10 mm, in particular 2 mm to 5 mm, preferably around 3 mm. Alternatively or in addition, the transverse width is in the range of at least 1 mm to 50 mm, in particular 15 mm to 35 mm, preferably about 25 mm. The transversal distance between adjacent electrical surface conductors can be in the range from 2.0 to 20 mm, in particular in the range from 4.0 to 10 mm.

In a particularly expedient embodiment of a kit of parts according to the invention with conductor-free surfaces, the conductor-free surface defines a transversal distance between two adjacent surface conductor tracks. Preferably, the conductor-free areas between respectively adjacent area conductors of the multiplicity of area conductors have an identical width. The area conductor tracks each have a transversal width between two adjacent conductor-free areas. The transversal width is at least as large as the transversal distance, in particular for at least 5, preferably at least 10, particularly preferably more than 10 or all surface conductor tracks of the carrier system of the kit-of-parts. In particular, the transversal width is greater than the transversal distance, in particular for at least 5, preferably at least 10, particularly preferably more than 10 or all surface conductor tracks. Additionally or alternatively, the transversal module can be defined as the sum of the transversal width of an electrical surface conductor track and twice the transversal distance of the conductor-free surface, in particular adjacent thereto. In the case of a kit of parts, the transversal width of the electrical surface conductor tracks is preferably in the range from 15 to 50 mm, in particular in the range from 20 to 40 mm.

According to a preferred embodiment, the electrical surface conductors represent low-voltage surface conductors.

In a particularly preferred embodiment of the kit of parts according to the invention, which can be combined with the previous ones, the carrier system is designed to be magnetizable. It can be preferred that the carrier system is equipped with magnetizable materials, in particular ferrimagnetic and/or ferromagnetic materials, eg magnetite. Alternatively or additionally, it can be provided that the kit of parts according to one embodiment also has at least one magnetizable holding layer, which is present on the front or rear, in particular on the front, of the carrier system. In particular, these embodiments can be combined with other embodiments described above or below, in which the current collector and/or a functional object is designed to be magnetic or magnetizable. A kit-of-parts with a magnetic or magnetizable holding position and/or magnetic or magnetizable carrier system has on the one hand the Advantage that, for example in rented apartments, objects can be attached to a building surface, such as a building wall or building ceiling, without damage by means of magnetic adhesion. A particular advantage of this embodiment of the kit of parts according to the invention can be seen in the fact that a secure mechanical contact between the conductor tracks and the current collector can be supported with the aid of a magnetic force. Electrical functional objects can also have electrical contacts which, supported by a magnetic pairing of forces between the carrier system and the functional object, can provide a secure mechanical contact. According to a particularly preferred embodiment of the kit-of-parts according to the invention, the magnetizable holding layer comprises ferrimagnetic and/or ferromagnetic materials, which in particular contain magnetite or consist of magnetite.

According to a preferred embodiment, the magnetizable or magnetic holding layer can comprise or represent a plaster coating, a filler layer, a paint layer, a primer layer, a plastic film or a fleece layer, in particular based on plastic, cellulose or glass fiber fleeces, each of which is coated with magnetizable materials, in particular ferri- and/or ferromagnetic materials, e.g. magnetite.

The magnetizable holding layer or the magnetizable carrier layer can contain particulate magnetizable materials, in particular ferrimagnetic and/or ferromagnetic materials. Among these particulate magnetizable materials, ferrites, especially magnetite, iron powder, especially ferromagnetic iron powder and/or carbonaceous iron powder, and any mixtures thereof are particularly preferred. Among the particulate magnetizable materials mentioned, magnetite is particularly preferably used. Such particulate magnetizable materials that have an average particle size D50 in the range from 10 to 100 μm, preferably in the range from 20 to 30 μm, have proven to be particularly suitable for solving the problem on which the invention is based. The average particle size D50 can be calculated according to DIN ISO 9276-1:2004-09 (Representation of the results of particle size analysis - Part 1: Graphic representation) and ISO 9276-2:2014-05 (Representation of the result of particle size analysis - Part 2: Calculation of average Particle sizes/diameters and moments from particle size distributions) can be determined. So-called laser scattering particle size distribution analyzers, such as those available from Horiba under the device designation “LA 950 V2”, can be used to determine the D50 values. According to a preferred embodiment of a kit of parts according to the invention, the carrier system comprises a gypsum plasterboard, a plaster coating, a filler layer, a paint layer, a primer layer, a wooden board, a plastic film and/or a fleece layer, in particular based on plastic, cellulose or glass fiber fleece . In particular, the carrier system is a gypsum plasterboard, a plaster coating, a filler layer, a paint layer, a primer layer, a wooden panel, a plastic film and/or a fleece layer, in particular based on plastic, cellulose or glass fiber fleece. The carrier system is preferably web-like and flexible and /or can be rolled up or unrolled. For example, the carrier system can include or represent wallpaper. In the case of a web-shaped carrier system, it can be preferred that the longitudinal direction of the electrically conductive conductor strips corresponds to the web direction of the carrier system, in particular is parallel to the web direction, or that the longitudinal direction of the electrically conductive conductor strips is aligned transversely, in particular orthogonally, to the web direction of the carrier system .

According to one embodiment, the at least one electrical planar conductor, in particular the multiplicity of, in particular longitudinal, electrical planar conductors are selected from the group consisting of metallic planar conductors, in particular made of copper and/or aluminum foil, tracks made of electrically conductive ink, in particular applied by means of printing processes, conductive polymer compounds and carbon fiber based systems.

In a preferred embodiment of a kit of parts according to the invention, this also includes at least one active functional object that is equipped with a magnetically active rear side. The active functional object can be, for example, a wall clock, a screen, a decorative fireplace, a skirting board, a lamp, a home automation switch, a speaker, a radio, an active noise canceling system, a heating element, a smoke detector, GPS tracker, liquid dispenser, such as a soap dispenser or disinfectant dispenser, and/or a sensor, such as a room sensor, for example a temperature sensor, noise sensor, brightness sensor, motion sensor, hygrometer, person sensor, vibration sensor. The active functional object preferably includes precisely one or more current pickups with a plurality of contact elements, as described above. In particular, the functional object can include at least one electrical consumer with a current collector. The at least one active functional object preferably comprises at least one electrical consumer, which can be supplied or is supplied with electricity in the low-voltage range, in particular by the carrier system. A power supply in the low-voltage range generally refers to a power supply significantly below the mains voltage of 230 V. Preferably, the power supply in the low-voltage range is a power supply in the range of 48 V or less, in particular 24 V or less, preferably 12 V or less, particularly preferably 6 V or less.

The invention also relates to the use of a current collector according to the invention as described above and/or a kit of parts according to the invention, in particular in a building, preferably in a rented apartment.

Further properties, features and advantages of the invention become clear from the following description of a preferred embodiment of the invention with reference to the attached drawing, in which:

FIG. 1 shows a schematic representation of an exemplary embodiment of a kit-of-parts according to the invention;

FIG. 2 shows a schematic representation of an exemplary embodiment of a kit of parts according to the invention with two different current pickups;

FIG. 3 shows a schematic representation of an exemplary embodiment of a kit of parts according to the invention with a current collector;

FIG. 4 shows a schematic sectional view of an exemplary embodiment of a kit of parts according to the invention with a functional object,

FIG. 5 shows a schematic representation of a current pickup according to the invention; and

Figure 6 shows another view of the current pickup according to Figure 5.

It is clear that the systems and devices according to the invention, which are shown as examples below with reference to the figures and which can be designed and set up in particular to carry out a method according to the invention, are only shown schematically and described as examples in the present disclosure. Within the scope of the disclosure, numerous variations are conceivable compared to the preferred embodiments illustrated by way of example. Fig. i schematically shows a kit of parts 1 according to the invention, which is used as a building surface function system. The kit of parts i in the illustrated embodiment comprises a carrier system 3 with a multiplicity of longitudinal surface conductor tracks 5, 6 and electrical consumers 100, which are equipped with current collectors according to the invention. The surface conductor tracks 5, 6 in cooperation with the current pickup 8, 8' are explained in more detail with reference to FIGS. Based on Figs. 6 and 7, a current pickup 8 is also described as an example.

The carrier system 3 can be, for example, a gypsum plasterboard, a plaster coating, a filler layer, a paint layer, a primer layer, a plastic film and/or a fleece layer, in particular based on plastic, cellulose or glass fiber fleece.

With the kit of parts 1, a surface power supply in the low-voltage range with, for example, 12 V can be provided on an interior wall of the room, as shown. With the help of the surface function system formed by the kit of parts, various active function objects 100 are held on the wall and supplied with electrical energy in the low-voltage range. An exemplary functional object 100 is the lamp 120. Another exemplary functional object 100 is the flat heating element 130. The surface function system 1 supplies the lamp 120 and the heating element 130 with current in the low-voltage range. The active functional objects 120, 130 include electrical loads and are equipped with one or more current pickups 8 (not shown in detail in FIG. 1) to supply these electrical loads. The current pickups are designed and set up to establish an electrical connection with the surface conductor tracks 5, 6 in order to supply the active functional objects 120, 130 with electrical energy. The picture in the picture frame 110 can be provided with passive lighting, which is supplied with current from two adjacent surface conductor tracks (not shown in detail) by a current collector.

The carrier system 3 of the kit-of-parts is equipped with the multiplicity of electrical conductor tracks 5, 6, which extend in the longitudinal direction L, for surface power supply. The transverse width b of the conductor tracks 5, 6 in the transverse direction T across, in particular orthogonally, to the longitudinal direction L is smaller by orders of magnitude than their longitudinal extension. The conductor tracks 5, 6 are strip-shaped. The thickness of the surface conductor tracks 5, 6 is very much smaller than their longitudinal extension and significantly smaller, in particular smaller by orders of magnitude, than the transversal width b. In the area of the carrier system 3, the conductor tracks 5, 6 are not electrically connected to one another but are electrically isolated from one another, in particular by conductor-free areas 39. The conductor tracks 5 and 6 can be divided into a first set of conductor tracks 5 and a second set of conductor tracks 6, in particular based on their electrical properties and/or spatial arrangement. The conductor tracks of the first set of conductor tracks 5 and those of the second set of conductor tracks 6 are arranged alternately on or in the carrier system 3 .

The conductor tracks 5 and 6 shown here have connection ends 51 and 61 arranged next to one another. In the embodiment shown in Fig. 1, all connection ends 51, 61 are located at the lower longitudinal end of the carrier system 3 in the vertical direction V (here corresponding to the longitudinal direction L). The connection ends 51, 61 are arranged in the area of the contact strip 2, which is formed here as a cover strip, namely as a base strip. In alternative, non-illustrated embodiments, the contact strip could be formed as a ceiling strip or as a strip that extends in the transverse direction or across the carrier system. The cover strip can optionally be part of the kit of parts 1. Concealed in the interior of the contact strips 2 are conductor strips for the power supply of the conductor tracks 5, 6. A first conductor strip is electrically connected to the connection ends 51 of the first set of electrical conductor tracks 5 . A second conductor strip is electrically connected to the connection ends 61 of the second set of electrical conductor tracks 6 . The first conductor strip 25 can be connected to a first pole of a direct current source and the second conductor strip can be connected to the second pole of this direct current source, with a potential difference in the low-voltage range prevailing between the direct current sources (not shown in detail).

The functional objects 100 are equipped with a magnetically active rear side 104 here. The carrier system 3 comprises a magnetizable or magnetic retaining layer 34. The retaining layer 34 cooperates with the magnetically active rear side 104 of the functional objects 100 in order to reversibly hold them in place on the wall.

The contact strip 2 can be formed like a profile, for example it can be extruded. To shorten or shorten the contact strip, the contact strip 2 can be provided with notches or other predetermined breaking points at regular intervals.

Figures 2 and 3 show different current collectors 8, 8 ', which cooperate with the surface conductors 5 and 6 of the first and second set. The current pickup 8' shown on the left in FIG. 2 comprises four electrical contact elements 81, 82, 83 and 84'. Three of the contact elements 81, 82 and 83 are arranged in pairs at the same contact distance k relative to one another and span an isosceles triangle. These contact elements 81, 82, 83 lie on a circumference 80. The fourth electrical contact element 84' is arranged in the middle of the triangle, in particular at its center. The contact elements 81, 82, 83 and 84' have the same needle-like shape and cross-sectional width p. A first contact element 81 forms an electrical connection with a first flat conductor track 5. A second and a third contact element 82, 83 form an electrical contact with the second flat conductor track 6. The fourth contact element 84' is located in the conductor-free area 39 between the adjacent conductor tracks 5 and 6.

The current pickup 8' comprises a contacting adapter, not shown in detail, with a rectifier circuit, not shown in detail, which is set up so that an electrical load can always be supplied with electrical energy by the current pickup 8', regardless of which or which of the various contact elements 81, 82, 83, 84' are in contact with the first or second surface conductor track 5 or 6, as long as at least one pair of contact elements is in contact with a conductor track 5 of the first set of conductor tracks on the one hand and with a conductor track 6 of the second set of conductor tracks on the other hand, so that there is a potential difference at the contact element pair (here: 81-83 or 81-82).

The other current pickup 8 shown in FIG. 2 comprises five contact elements 81, 82, 83, 84 and 85 arranged at equal intervals on a circumference 80. The contact elements 81, 82, 83, 84 and 85 form the corners of an isosceles pentagon. With the exception of the shape, essentially the same applies to this current pickup 8 as to the current pickup 8 described above. Contact element pairs (here: 81-84 or 82-84) are also in the current pickup 8 on the one hand with a conductor line 5 of the first set and on the other hand in electrically conductive connection with a conductor track 6 of the second set. In the example shown, there are two contact elements 83, 85 in the conductor-free area 39.

In the illustrated embodiments, the various surface conductor tracks 5, 6 have a uniform transverse width b. The conductor-free areas define a transversal distance t between the adjacent surface conductor tracks 5, 6. The adjacent surface conductors 5 and 6 are oriented parallel to one another.

In the case of the kit-of-parts 1 shown in FIG. 3, a particularly preferred relation of the dimensions of the planar conductors 5, 6 in relation to the current collector 8 is realized. The Current collector 8 in turn has an isosceles pentagon configuration of the contact elements 81, 82, 83, 84, 85. Between adjacent surface conductor tracks 5 and 6, a conductor track-free area 39 is provided. All surface conductors 5, 6 have essentially the same transverse width b and the same transverse distance t to the respective adjacent surface conductor 6 or 5. The transverse distance t between two adjacent surface conductors 5 and 6 is smaller than the transverse width b, preferably smaller than half the transverse width 5 , particularly preferably less than a quarter of the transverse width and / or greater than a twentieth, in particular greater than a tenth. The cross-sectional width p of the contact elements is the same size and, in particular 1 mm, smaller than the transversal distance t.

Opposite contact elements 81, 82, 83, 84, 85 can be considered in pairs, the pairs being spaced apart from one another by a contact distance k. In the isosceles pentagon shown, the contact distances k of all pairs are the same. Other configurations are conceivable. The contact distance k of the current collector 8 is greater than the sum of a transverse width b and a transverse distance t, in particular greater than a transverse modulus h, the transverse modulus h corresponding to the sum of two transverse distances t and a transverse width b. The contact distance k of the current pickup 8 is smaller than the sum of two transverse widths b and a transverse distance t.

The contact elements 81, 82, 83, 84, 85 of the current collectors 8 shown in FIGS. 2 and 3 (with the exception of the central contact element 84') are arranged at the corner points or tips of a respective isosceles polygon. Each polygon has a height H which is determinable in a manner known to those skilled in the art as the distance from a base side edge of the polygon to a farthest opposite top or side edge of the polygon. The height H of the polygon is in particular at least as great as, preferably greater than, the transversal modulus h, so that contact elements at a distance from one another can make an electrical connection with different conductor tracks 5, 6.

The above explanations based on a current pickup 8 with pentagonally arranged contact elements 81, 82, 83, 84, 85 apply correspondingly to other polygonal configurations.

Surprisingly, it has been shown that a contacting probability of at least 95%, in particular at least 99%, can be achieved even with contact elements with a relatively small contact element circumference 80 . through the high probability of contact, easy and safe use is guaranteed. For planar conductors 5, 6 with a transversal width b of about 25 mm and a transversal distance t of about 3 mm, the following values for an optimal peripheral diameter of a small diameter with the highest contacting probability could surprisingly be determined:

It has also been shown that the ratio of transversal width b to the sum of transversal width b and transversal distance t can be modified, with a high probability of contact being able to be maintained even with reduced surface coverage with surface conductor tracks 5, 6, if necessary with an increased perimeter diameter 80 to preferably not more than 6 cm, especially no more than 5.5 cm. For example, the area coverage can be reduced by increasing the transverse distance to at least 5 mm, in particular at least 6 mm, preferably at least 7.5 mm, particularly preferably at least 16.5 mm. Alternatively or additionally, the area coverage can be reduced by reducing the transversal width. Deviating from the preferred area coverage of approximately 89%, a reduced area coverage of no more than 80%, preferably no more than 76%, in particular no more than 60%, can be provided. The area coverage is preferably at least 75% for a current pickup 8' with contact elements in the form of an equilateral triangle with central contact. The area coverage is preferably at least 70% for a current collector 8 with contact elements in the form of an equilateral pentagon. For a current collector with contact elements in the form of an equilateral heptagon, the area coverage is preferably at least 55%.

FIG. 4 shows an exemplary cross-sectional view of a kit of parts 1 according to the invention. The carrier system 3 can be formed, for example, as a web material, for example as a nonwoven layer, in particular based on plastic, cellulose or glass fiber nonwovens. The carrier layer 31 can alternatively or additionally be realized as a plastic film. Other configurations of the carrier layer 31 and/or the carrier system 3 are conceivable; Alternatively, it is conceivable that the carrier system 3 is implemented, for example, as a plaster coating, filler layer or the like and the surface conductor tracks 5 and 6 are embedded in the carrier system 3 (not shown). The carrier layer 31 can implement a magnetic 0 or magnetizable holding layer in functional union.

In the preferred embodiment according to the invention according to FIG. 4, a magnetizable holding layer 34 is provided on the carrier layer 31. FIG. A decorative coating 30 is provided on the front of the carrier system 3 . The carrier system 3 cooperates with a functional object 100. The functional object has several needle-shaped contact elements 81 (only one shown), which are designed and set up to penetrate into the carrier system 3 and brought or can be brought into physical contact with the planar conductor track 5/6. The needle-shaped contact elements 81 are preferably designed to penetrate at least the planar conductor 5 or 6, in particular the carrier system 3 completely. The surface conductor tracks 5 and 6 have a track thickness d. The web thickness d is preferably less than 1 mm, in particular less than 0.1 mm. The needle length or, in general, the contact element length n of the contact element 81 is greater than the web thickness d. The carrier system 3 has a system thickness s. The needle length n is preferably at least as great as the system thickness s.

FIGS. 5 and 6 show a schematic representation of an electrode carrier, in particular a diode carrier structure, such as a printed circuit board. FIG. 5 shows the schematic plan view and FIG. 5 the schematic view from below of the same electrode carrier. The letters A, B, C, D, E, F, G and H show vias from the top to the bottom in FIGS. 5 and 6, it being understood that the same capital letter stands for the same via. Broad conductor tracks 89 are provided on the underside of the electron carrier, which electrically connect the contact electrodes 81, 82, 83, 84 and 85 to the vias. The wide conductor tracks 89 on the electrode carrier are suitable for currents in the range from 0.1 A to 10 A, in particular for currents in the range from 0.5 A to 5 A, preferably for currents in the range from 1 A to 3 A, particularly preferably for currents of about 2 A, designed and set up.

At the top of the electron carrier, the vias are connected by wide conductor tracks 89 to a large number of diodes 91, 92, 93, 94, which form the rectifier Form circuit 90 which operates the current output 99. The current output 99 can be implemented, for example, as a contacting adapter in order to accommodate two supply lines for an electrical load 100 . The supply lines can be connected to two poles 97, 98 with different potential levels.

The current pickup 8 shown in FIGS. 5 and 6 has five electrical contact elements 81, 82, 83, 84, 85. The contact elements 81, 82, 83, 84, 85 are connected to ten diodes 91, 92, 93, 94. Eight diodes 91, 92 of these ten diodes are arranged on a diode circuit, which here essentially corresponds to the circuit 80 on which the contact elements 81, 82, 83, 84, 85 are arranged. An outer circle AK can be defined on the outer circumference of the electrode carrier, from which an annular width RB extends radially inwards in order to define an annulus in which all contact elements 81, 82, 83, 84, 85 are arranged. In the exemplary embodiment shown here, a diode outer circle is provided with the diode circle diameter DK, which here corresponds to the outer circle diameter AK. Starting from the outer circle diameter AK, a diode ring width DB expands radially inwards, which together with the diode circle diameter defines a diode ring in which most of the diodes 91, 92 of the plurality of diodes are arranged. Only two diodes 93, 94 are attached to the electrode carrier within the diode ring circuit.

The essentially circular electrode carrier of the current collector 8 can be divided into two semicircular segments 87, 88. The current outlet 99 is arranged in the middle area between the segments 87 and 88 . The first circle segment 87 (lower in the figure) contains half of the diodes 91, 93. The diodes 91, 93 in the first circle segment 87 are connected to the first pole 97 of the current output 89. The second circle segment 88 (upper in the figure) contains the other half of the diodes 92, 94. The diodes in the second segment are electrically connected to the second pole 98 of the current output 89.

It is clear that the systems and devices according to the invention, which are shown as examples below with reference to the figures and which can be designed and set up in particular to carry out a method according to the invention, are only shown schematically and described as examples in the present disclosure. Within the scope of the disclosure, numerous variations are conceivable compared to the preferred embodiments illustrated by way of example.

The features of the invention disclosed in the above description, the drawings and the claims can be used individually or in any combination be essential for the realization of the invention in its various embodiments.

reference character list

1 kit of parts

2 electrical contact strip

3 carrier system

5 area track

6 area track

8, 8' current pickup

30 top layer

31 carrier layer

34 holding position

51 connector end

61 connector end

8o circle

81 contact element

82 contact element

83 contact element

84 contact element

84' contact element

85 contact element

87, 88 segments

90 rectifier circuit

91, 92, 93, 94 diodes

97, 98 pin

99 current output

100 function object

104 magnetically active back

110 picture frames

120 lamp

130 heating element b transverse width d web thickness h transverse modulus k contact distance n contact element length p cross-section width s system thickness t transversal distance

H horizontal direction

L longitudinal direction

T transverse direction

V vertical direction

AK circle diameter

RB ring width

DK Diode circle diameter

DB diode ring width

Claims

Current pickups (8, 8'), in particular contacting adapters, for an electrical load (100) for attachment to a carrier system (3) with a multiplicity of longitudinal electrical conductor tracks (5 , 6) with a transverse width (b) with alternating electrical potential, the current pickup (8, 8') comprising at least three, preferably at least five and particularly preferably exactly five, electrically conductive contact elements (81, 82, 83, 84, 85). a cross-sectional width (p), in particular an operative diameter, the contact elements (81, 82, 83, 84, 85) forming a polygon with a height (H), characterized in that the contact elements (81, 82, 83, 84, 85) have a contact element length (n), such as a needle length, for penetrating the conductor tracks (5, 6). Current pickup (8, 8') according to Claim 1, characterized in that the contact elements (81, 82, 83, 84, 85) are needle-shaped, in particular with a conically shaped insertion end, and/or pin-shaped, in particular with a cylindrical section are. Current pickup (8, 8') according to Claim 1 or 2, characterized in that the cross-sectional width (p), in particular the operative diameter, of the contact elements is in the range from 0.25 to 1.5 mm, in particular in the range from 0.5 mm up to 1.0 mm. Current pickup (8, 8') according to one of the preceding claims, characterized in that the contact element length (n), such as a needle length, is in the range from 0.5 to 10 mm, in particular in the range from 1.0 to 5.0 mm. is, preferably all contact elements of the current collector have essentially the same contact element length. Current pickup (8, 8') according to one of the preceding claims, characterized in that

28 the contact elements (81, 82, 83, 84, 85) each have a peripheral contact surface which is designed and set up for providing an electrical connection of one of the contact elements (81, 82, 83, 84, 85) with one of this contact element (81 , 82, 83, 84, 85) penetrated electrical conductor path, wherein the contact surface comprises or consists of at least one electrically conductive material, wherein in particular the conductive material is selected from the group consisting of brass, chromium, nickel, silver, copper and gold. Current pickup (8, 8 ') according to any one of the preceding claims, characterized in that the contact elements (81, 82, 83, 84, 85) in a circular ring with a ring width (RB) and an outer circle diameter (AK), in particular on a circle (80) with a, in particular predetermined, diameter (KD), wherein in particular the outer diameter of the circle is not more than 6.5 cm, preferably not more than 5 cm. Current collector according to Claim 6, characterized in that the ring width RB of the circular ring is in the range from 0.2 x B to 1.5 x B, in particular in the range from 0.3 x B to 1.2 x B, and/or, in particular and, the circle diameter KD is in the range from 1.0 xb to 3.0 xb, in particular in the range from 1.2 xb to 2.5 xb, where b represents the transversal width of the surface conductor tracks Current pickup (8, 8') according to one of the preceding ones Claims, characterized in that adjacent contact elements (81, 82, 83, 84, 85) are essentially equidistant from one another. Current pickup (8, 8') according to one of the preceding claims, characterized in that the polygon is equilateral and the contact elements (81, 82, 83, 84, 85) lie on the corner points of the polygon. Current pickup (8, 8') according to any one of the preceding claims, further comprising a rectifier circuit (90). Current pickup (8, 8') according to Claim 10, characterized in that the rectifier circuit (90) is designed and set up to detect an electrical potential difference between precisely one or at least a first of the at least three electrically conductive contact elements (81, 82, 83, 84 , 85) and precisely one or at least a second of the at least three electrically conductive contact elements (81, 82, 83, 84, 85) to a current output (99). Current pickup (8, 8') according to Claim 11, characterized in that the rectifier circuit (90) is designed and set up to convert an electrical potential difference from any pair of the at least three electrically conductive contact elements (81, 82, 83, 84, 85) to the current output (99). Current pickup (8, 8 ') according to any one of claims 10 to 12, characterized in that the current pickup comprises a plurality of diodes (91, 92, 93, 94), in particular several of the plurality of diodes (91, 92) in one Annulus with a diode ring width (DB) and an outer diode circular diameter (DK), in particular on a circle with a predetermined diameter, are arranged, in particular the outer diode circular diameter not more than 6.5 cm, preferably not more than 5 cm. Current pickup (8, 8') according to Claim 13, characterized in that the diodes (91, 92, 93, 94) each have a forward voltage of no more than 1 V, in particular no more than 0.75 V, preferably no more than 0 .5V. Current pickup (8, 8') according to Claim 13 or 14, characterized in that the plurality of diodes (91, 92, 93, 94) comprises a first group of diodes (91, 93) in electrical contact with a first pole of the current output ( 99) and a second group of diodes (92, 94) in electrical contact with a second pole of the current output (99). Current pickup (8, 8 ') according to claim 15, characterized in that the first group of diodes (91, 93) in a first, preferably semicircular, segment (87) and wherein the second group of diodes (92, 94) in a another, preferably semicircular, segment (88) is arranged on a diode support structure, with the current output (99) preferably being arranged between the first segment (87) and the second segment (88). Current pickup (8, 8') according to one of the preceding claims, characterized by at least one magnetic holding component for fixing the current pickup (8, 8') to a magnetic or magnetizable holding layer (34) of the carrier system (3), in particular to an underside of the current pickup (8, 8') from which the electrical contact elements (81, 82, 83, 84, 85) protrude. Current pickup (8, 8') according to one of the preceding claims, characterized in that the current pickup (8, 8') has at least two connection receptacles, such as connection terminals, which are designed and set up to each accommodate at least one electrical line of an electrical consumer . Kit of parts, containing i) at least one current pickup (8, 8') according to one of the preceding claims; and ii) a carrier system (3) which is equipped with a large number of longitudinal electrical surface conductor tracks (5, 6) with a transverse width (b) each running at a transverse distance (t) from one another, kit of parts according to claim 19, characterized characterized in that the contact elements (81, 82, 83, 84, 85) have a cross-sectional width (p), in particular an operative diameter, which is smaller than the transverse distance (t) between adjacent surface conductor tracks (5, 6), in particular substantially corresponds to half the transverse distance (t) and/or is at least 0.5 mm, preferably at least 1 mm, smaller than the transverse distance (t). Kit-of-parts according to claim 19 or 20, characterized in that the transversal distance (t) between adjacent electrical surface conductors (5, 6) is smaller than the transversal width (b) of these surface conductors (5, 6), with the transversal width (b) in particular being at least 45%, preferably at least 65%, of the height (H) of the measures polygons. Kit of parts according to one of Claims 19 to 21, characterized in that at least one pair of contact elements (81, 82, 83, 84, 85) has a contact spacing (k) from one another which is greater than the sum of the transverse width (b) an area conductor track (5, 6) and the transverse distance (t) of the conductor-free area (39) between adjacent area conductor tracks (5, 6) and which is smaller than the sum of twice the transverse width (b) of adjacent area conductor tracks (5, 6 ) and the transversal distance (t) of the conductor-free surface (39) between adjacent surface conductors (5, 6), and/or, in particular and, where the following applies to the height H of the polygon: H>(b+2xt), and/or , In particular and, wherein a transversal modulus (h) is defined as the sum of the transversal width (b) of an electrical surface conductor track and twice a transversal distance (t) of the conductor-free surface (39), the contact spacing (k) essentially corresponding to the transversal modulus ( h) corresponds . Kit of parts according to one of Claims 19 to 22, characterized in that the contact elements have a contact element length (n) which is greater than a path thickness (d) of the conductor strips and/or, in particular and, is greater than a system thickness ( s) the carrier system (3), in particular the contact element length (n) being at least as great as the sum of the web thickness (d) and system thickness (s). Kit of parts according to one of Claims 19 to 23, characterized in that the large number of surface conductors (5, 6) has a uniform transverse width (b). Kit of parts according to one of Claims 19 to 24, characterized in that the plurality of surface conductor tracks has a substantially uniform longitudinal extent. Kit-of-parts according to one of Claims 19 to 25, characterized in that the large number of adjacent surface conductor tracks runs in parallel.

32 o.'j. Kit-of-parts according to one of Claims 19 to 26, characterized in that the multiplicity of adjacent surface conductor tracks are each separated from one another by a conductor-free surface.

28. Kit of parts according to one of claims 19 to 27, characterized in that adjacent surface conductors of the plurality of surface conductors have the same transverse distance from one another, with the transverse distance (t) in particular being in the range of at least 1 mm to 10 mm, in particular 2 mm to 5 mm, preferably about 3 mm, and/or, in particular, and that the transverse width (b) is in the range of at least 1 mm to 50 mm, in particular 15 mm to 35 mm, preferably about 25 mm.

29. Kit-of-parts according to any one of claims 19 to 28, characterized in that the conductor-free surfaces between respectively adjacent surface conductors of the plurality of surface conductors have an identical width.

30. Kit-of-parts according to one of claims 19 to 29, characterized in that the transversal distance (t) of adjacent electrical planar conductors is in the range from 2.0 to 20 mm, in particular in the range from 4.0 to 10 mm, and /or, in particular and, the transversal width (b) of the electrical planar conductors is in the range from 15 to 50 mm, in particular in the range from 20 to 40 mm.

31. Kit-of-parts according to one of claims 19 to 30, characterized in that the electrical surface conductors represent low-voltage surface conductors.

32. Kit of parts according to one of Claims 19 to 31, characterized in that the carrier system is designed to be magnetizable, with the carrier system in particular comprising at least one magnetizable holding layer (34) which is attached to the front or rear, in particular the front, on the Carrier system (3) is present.

33. Kit-of-parts according to one of claims 19 to 32, characterized in that the at least one, in particular the plurality of, in particular longitudinal, electrical planar conductors (5, 6) are selected from the group consisting of metallic planar conductors, in particular made of copper or aluminum foil,

33 Webs made of electrically conductive ink, conductive polymer compounds and carbon fiber-based systems, in particular applied by means of printing processes. Kit-of-parts according to one of Claims 19 to 33, characterized in that the carrier system is a gypsum plasterboard, a plaster coating, a filler layer, a paint layer, a primer layer, a plastic film, wooden board and/or a fleece layer, in particular based on plastic, Cellulosic or glass fiber webs, comprises or represents. Use of a current collector according to one of Claims 1 to 18 and/or a kit of parts according to one of Claims 19 to 34 in a building.

34