EP2272072B1 - Bobine et procédé de fabrication d une bobine - Google Patents

Bobine et procédé de fabrication d une bobine Download PDF

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Publication number
EP2272072B1
EP2272072B1 EP09728741.1A EP09728741A EP2272072B1 EP 2272072 B1 EP2272072 B1 EP 2272072B1 EP 09728741 A EP09728741 A EP 09728741A EP 2272072 B1 EP2272072 B1 EP 2272072B1
Authority
EP
European Patent Office
Prior art keywords
coil
electrical conductors
winding
another
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09728741.1A
Other languages
German (de)
English (en)
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EP2272072A1 (fr
Inventor
Bernhard Roellgen
Herbert-Maurizio Cardarelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Electronics AG
Original Assignee
Epcos AG
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Filing date
Publication date
Application filed by Epcos AG filed Critical Epcos AG
Publication of EP2272072A1 publication Critical patent/EP2272072A1/fr
Application granted granted Critical
Publication of EP2272072B1 publication Critical patent/EP2272072B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/069—Winding two or more wires, e.g. bifilar winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/082—Devices for guiding or positioning the winding material on the former
    • H01F41/084—Devices for guiding or positioning the winding material on the former for forming pancake coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling

Definitions

  • the invention relates to a coil and to methods for producing coils.
  • the US 2004/0136559 A1 shows a coil with a wound around a roll cable in which a plurality of electrical lines are parallel.
  • the US 3,125,133 A relates to a method for producing a so-called disc coil of a plurality of juxtaposed lines.
  • the DE 977571 C shows coils with multiple symmetrical windings comprising two lines.
  • the JP 2003-086427 A shows a coil with two side by side helically extending lines. Coils with multiple helically parallel lines running parallel in the JP 2005-327834 A . JP 04-359502 A and the JP 2005-209916 A as well as in the post-published WO 2010/089413 A1 shown.
  • the object is achieved by a coil according to claim 1. Furthermore, the object is achieved by a method according to claim 9 and a method according to claim
  • a coil comprising at least four electrical lines.
  • the electrical cables are wound around a common winding center. Over the entire length of the coil, each of the at least four electrical lines has a constant distance to the winding center of the coil. Under the winding center is the respective geometric center of the windings to understand. Viewed over the entire length of the coil, the winding center corresponds, for example, the longitudinal axis of the coil: The individual windings of each individual electrical line are arranged side by side over the entire length of the coil. The windings of the next closest adjacent electrical line are arranged directly over the windings of the electrical lines arranged further inside. The distance of the first electrical line is constant over the entire length of the coil. The distances between the further electrical lines have, corresponding to their position, a greater distance from the winding center, wherein the distance of each individual electrical line preferably remains constant over the entire length of the coil.
  • the electrical lines are partially mechanically fixed together.
  • the electrical cables are mechanically interconnected at regular or irregular intervals. Through the interconnected electrical wires, which are wound around a common winding center are, the coil reaches a self-supporting stability of their shape.
  • the electrical lines in the coil windings of the coil are insulated from each other.
  • the mutual insulation of the lines reduces eddy current losses to a minimum.
  • the at least four electrical lines are electrically conductively connected to each other, so that the lines are preferably connected in parallel.
  • the electrical lines are preferably connected to each other at least at the ends of the coil by means of solder bridges. The equalizing currents flowing through the individual electrical leads are thus minimized within the winding.
  • the coil is particularly suitable for high frequency applications.
  • the coil is used for example at high currents.
  • the current of the coil is divided by flows on the at least four parallel electrical lines. Due to the almost ideal nature of the windings, the coil can be used in almost every area in which such coils are needed.
  • the electrical leads comprise twisted individual wires. These are preferably twisted strands with thin individual wires.
  • Each current-carrying electrical conductor has a certain inductance due to the surrounding, caused by the current magnetic field. To increase the inductance of the electrical conductor be provided with a certain number of turns.
  • the coil is preferably constructed such that the coil has a self-supporting shape by mechanically interconnected electrical wires wound around a winding center.
  • the self-supporting shape of the coil is preferably achieved by the mutually mechanically connected electrical lines.
  • the coil therefore preferably does not require a bobbin that maintains the stability of the coil.
  • the electrical lines have mechanical connections with each other at regular intervals.
  • these can be enveloped, for example, with a thermoplastic which softens during heating, for example by means of infrared light or a hot air flow, and subsequently demolded and connects the lines together.
  • Wires that are wrapped with a thermoplastic material are also referred to as baked enamel wires.
  • the electrical leads can be connected to one another, for example, by applying UV-curing adhesives.
  • the application of the UV-curing adhesive can be done, for example, while the individual lines are on a guide roller.
  • the application of a UV-curing adhesive may occur shortly after peeling off the guide roll.
  • the curing of the adhesive takes place for example by means of UV light, which is generated for example by means of a UV LED array.
  • a flashlamp can be used wherein curing by the UV light occurs within 200 ms.
  • the mechanical connection of the lines can be carried out, for example, by gluing by means of an underlying piece of adhesive film.
  • the bonding by means of adhesive film can for example be done shortly before a first pressure roller with the upward adhesive layer in the guide roller.
  • the lines can be connected by weaving, for example, with a plastic yarn.
  • a plastic yarn for example, polyester is suitable as a base material.
  • the plastic yarn may, for example, be provided with a baked enamel layer or a pressure-sensitive adhesive.
  • the plastic yarn is injected, for example, by means of an air flow between the individual lines.
  • the electrical lines connect to the plastic yarn, for example, additionally by means of pressure. Alternatively, the electrical wires can connect to the yarn by heating.
  • the coil may have a round, elliptical or rectangular shape as the coil cross section.
  • a circular shape is the best possible shape.
  • the inner electrical leads of the coil have a length that is shorter than the length of the next outwardly adjacent electrical lead.
  • the parallel lines are preferably connected together so that the length of the outermost line is longer than the length of the inwardly adjacent line, wherein the length of the electrical lines thus decreases inwardly.
  • the electrical lines Due to the different lengths of the electrical lines which are mechanically connected to one another, the electrical lines thus have a curved shape after connection.
  • the interconnected lines run in the form of a helical band, which corresponds approximately to the shape of an Archimedean screw.
  • the respective ends of the electrical leads have electrical contacts.
  • the beginning and the end of each line is preferably designed as a pin. At low mechanical loads, these pins are sufficient to allow mounting of the device.
  • the ends may be formed, for example, as SMD solder pads to the ferrite core.
  • the ends of the electrical lines are each connected to separate contact pins. Due to the additional contact pins or solder pins higher mechanical loads can act on the contacts without the ends change their original position and shape.
  • the inner diameter of a coil as described above can be reduced to a minimum by the type of winding described above and the self-supporting property.
  • the coil can already be used as an air coil, which is achieved by a winding described above, as a component.
  • the coil in this case has no additional bobbin, which would contribute to increase the stability.
  • the theoretically available changing room is completely available.
  • a larger usable changing room is available.
  • lamp inductors requires relatively large numbers of turns, which are installed in flat ferrite cores, so that a desired switching frequency of 45 kHz, for example, can be achieved.
  • the height of the inductors is limited by the relatively low height of the standard housing used.
  • a plurality of coils with different diameters as described above can be inserted into one another or placed one above the other.
  • the coils are galvanically separated from each other and thus have windings which are magnetically coupled.
  • tubular plastic spacers inserted between the individual coils.
  • the bobbin may function as a transformer by weaving yarns of polyester or nylon suitably incorporated into the conduits.
  • the coil has an inner layer of windings of one or more electrical conductors which have been followed by one or more layers of windings of insulating material. Then follows again one or more layers of windings of an electrical conductor.
  • ferrite cores are often used.
  • the ferrite core is in this case preferably arranged such that the windings of the coil are guided around the ferrite core.
  • Ferrite cores can be designed as ring cores, rod cores or in any other form.
  • An air gap in the otherwise closed course of a ferrite core reduces the magnetic flux density of the core considerably and thus causes z.
  • B. a linearization of the magnetization characteristic, according to the relationship between magnetic field strength and magnetic flux density of the component. The magnetic saturation of the core material thus occurs only at much higher field strengths. In the air gap of storage chokes, a substantial portion of the magnetic energy is stored.
  • ferrite cores having three legs such as E cores, which preferably have a large air gap in the area between the two center limbs
  • bobbins are often used with a pillow-shaped portion of the coil.
  • a cushion is understood to mean a region of the coil in which there are no windings or few windings in the area of the air gap between two ferrite cores. Such a cushion can be achieved with the coil described above, for example, by pulling apart the windings in the region of the air gap.
  • a circular segment-shaped plastic part can be arranged, for example, in this area.
  • the plastic part may be inserted, for example, in the region of the air gap.
  • the preferably pressed coil can be provided, for example, with an additional potting compound.
  • the potting compound serves as an insulating protective layer. Furthermore, the coil through the layer of potting compound on a further stabilization.
  • At least four electrical lines are pressed by means of at least a first and a second conical pressure roller on a preferably conical guide roller.
  • the guide roller has guides, which are preferably arranged concentrically around the axis of rotation of the guide roller.
  • the guide roller has the shape of a truncated cone.
  • the guides may be arranged as groove-shaped, concentric depressions on the guide roller.
  • Each of the at least four electrical lines is guided in a separate guide of the guide roller.
  • the electrical leads are preferably mechanically connected to each other during rotation of the guide roller. After the circulation of the guide roller, the electrical lines in the form of a helical band.
  • the pressure rollers are preferably mounted with respect to shape and size accurately to the guide roller.
  • the first pressure roller leads the electrical lines with the speed corresponding to the respective radius of the guide roller to the guide roller.
  • the second Andrucksrolle is also precisely matched to the leadership role.
  • the lines are mechanically interconnected.
  • the connection of the individual lines can take place, for example, according to the alternatives described above for the component
  • the preferably pressed coil can be immersed in a trough with potting compound after winding. This creates a protective layer, through which the winding is further fixed. The winding thus also receives an insulating protective layer.
  • Another method for producing a coil is a method in which at least four electrical lines are wound around a rotating axis of a winding tool by means of a wire guide.
  • each of the at least four electrical lines has a separate wire guide.
  • the individual wire guides are arranged side by side in a single component.
  • the electrical lines are wound around the axis of rotation in a winding plane, which is arranged perpendicular to the axis of rotation of the winding tool. With increasing number of turns, the wire guide is guided parallel to the axis of rotation, so that a winding is formed.
  • the electrical leads are preferably mechanically interconnected during winding.
  • the first ends of the electrical lines are inserted in a guide of a first winding tool.
  • the guide can be formed for example by a slot or a recess in the winding tool.
  • the electrical lines are fixed in the recess.
  • the inner diameter of the coil to be wound is determined by the outer diameter of the rotating axis around which the wires are wound.
  • the wire guide moves at the speed in the winding direction, with which the already wound up winding grows.
  • a shield arranged on the wire guide which is arranged concentrically around the axis of rotation, can serve, for example, to exert pressure on the already finished area of the coil, so that the position of this area can no longer change.
  • the wire ends can, for example, be manually introduced into further slot-shaped depressions of a second winding tool.
  • the second winding tool is connected to the first winding tool via, for example, a coupling with each other and rotates in the same speed and with the same direction of rotation, as the first winding tool.
  • the winding is heated during winding with an infrared radiator or a hot air stream above the softening temperature of the thermoplastic layer.
  • the coil can be taken after cooling below the softening temperature of the thermoplastic resin layer from the form-giving winding tool. The previously inserted into the wells of the winding tools ends are taken out of this case.
  • the coil can be fixed, for example, by means of a fast-curing adhesive which is introduced during winding.
  • cables of any type can be used.
  • the adhesive can, for example, enforce the entire winding.
  • only the end or the beginning of the roll may be interspersed with an adhesive layer.
  • winding tools which consist of Teflon, for example, acrylate adhesives or epoxy resins can be used without causing problems during demoulding.
  • the preferably pressed coil can be immersed in a trough with potting compound after winding. This creates a protective layer, through which the winding is further fixed. The winding thus also receives an insulating protective layer.
  • the coil described above is preferably used as a high-frequency choke in the range of 30 kHz to well over 5 MHz.
  • twisted strands achieves a reduction in the proximity effect.
  • strands of 30 to 50 twists / meter are used. Preference is given to using strands having a number of preferably up to 200 twists per meter.
  • the coil has a high DC resistance at low frequencies compared to a flat coil. At high frequencies, however, the RF resistance does not increase as much as that of flat coils or conventional windings (layer windings).
  • a layered wrap with For example, 27 turns has, for example, a RM6 core of N49 material, 0.48 ohms air gap, 350 ohms frequency, 0.78 ohms resistance, and 750 kHz, 2.86 ohms resistance ,
  • a winding as described above has a resistance of 1 ohm at the same number of turns and the same core at 350 kHz, but at 750 kHz only a resistance of 2 ohms.
  • the coil Due to the higher Q-factor, the coil has a narrower and higher resonance curve at high frequencies (eg 500 kHz) when excited at the 3rd, 5th and 7th harmonic.
  • high frequencies eg 500 kHz
  • the FIG. 1 shows a schematic diagram of a first embodiment of a coil 1.
  • the distance d of the electrical line 2 to the longitudinal axis of the coil 1 is equal over the entire length of the coil 1.
  • the distances between the further electrical leads 2 'to the longitudinal axis of the coil 1 are also approximately constant over the entire length of the coil 1.
  • the coil 1 has an inner diameter D1, which is approximately equal over the entire length of the coil 1.
  • the electrical lines 2, 2 'of a winding plane are preferably arranged uniformly one above the other. By co-winding the electrical lines 2, 2 'is achieved that the electrical lines 2, 2' come to lie directly above each other.
  • the electrical lines 2, 2 'are electrically connected together.
  • the coil 1 preferably has at the beginning and at the end of an electrical contact 4, via which the coil 1 can be electrically connected.
  • the coil 1 Due to the windings of the electrical lines 2, 2 ', the coil 1 has a sufficiently high stability, so that the coil 1 does not require an additional bobbin.
  • a ferrite core 5 may be inserted.
  • the coil 1 may also be pushed, for example, onto the arms of a ferrite core having an E-shape.
  • the coil 1 is pulled apart, so that a kind of cushion is created in the area of the air gap of the E-cores. In the area of the pillow are ideally no, or as few turns.
  • FIG. 1 Part of the turns is marked as area A.
  • the area is in the FIG. 2 shown enlarged.
  • FIG. 2 is a cutout of the coil FIG. 1 shown.
  • the electrical leads 2, 2 ' may also consist of individual wires, rectangular flat wires or other wire forms.
  • a second 2 'and further electrical lines are arranged, which are wound together with the first electrical line 2 to a common winding center.
  • FIG. 3 schematically shows a first possible arrangement for producing a coil 1, which in FIGS. 1 and 2 is shown.
  • the first pinch roller 10 presses the electrical leads 2, 2 'on guides 13 of a guide roller 12.
  • the first pinch roller 10 is adapted in shape to the guide roller 12 and rotates at the same speed as the guide roller.
  • the guide roller 12 has a conical shape in the illustrated arrangement.
  • a second pressure roller 11 is arranged at an angle of approximately 90 ° to the first pressure roller 10.
  • the second pinch roller 11 is like the first pinch roller 10 adapted to the shape and size of the guide roller 12 and rotated at the same speed.
  • the electrical lines 2, 2 ' are mechanically connected to each other by means of an infrared line emitter 15.
  • the electrical lines 2, 2 ' for example, a thermoplastic plastic sheath (baked enamel wires), which stick together when heated.
  • the first pressure roller 10 can additionally be heated so that the thermoplastic plastic coating (baked enamel layer) in the region of the first pressure roller 10 is heated to slightly below the softening temperature of the plastic casing.
  • the individual electrical lines 2, 2 ' are mechanically interconnected.
  • the guide roller 12 and / or the second pressure roller 11 is cooled.
  • the electrical leads 2, 2 ' can also be interconnected by means of a UV-curing adhesive.
  • the adhesive can be applied, for example, as long as the electrical leads 2, 2 'are located in the guides of the guide roller 12.
  • the adhesive can also be applied to the electrical leads 2, 2 'shortly after leaving the guide roller 12.
  • the curing of the adhesive takes place by means of UV light from a UV LED array or a flashlamp, preferably within 200 ms.
  • the adhesive strips are placed only shortly before the first pressure roller on the guide roller 12 with the upward adhesive layer.
  • the mechanically interconnected electrical lines 2, 2 ' have a helical shape.
  • the helical shape is due to the fact that the length of the outermost electrical line 2 is longer than the length of the adjacent electrical line 2 '.
  • the next inwardly adjacent electrical line 2, 2 ' is always shorter in each case.
  • a helical endless belt is formed - similar to an Archimedean screw.
  • the endless band can, as in FIG. 3 darg Pope, for example, collected in a co-rotating catch cup 14.
  • the windings By gravity, the windings automatically overlap, which compresses the resulting winding.
  • the endless belt can be severed. Further compression of the loose roll in the collecting cup 14 can be done for example by simple pressing. Alternatively, the winding can also be further compressed by means of a shrink tube.
  • FIG. 4 schematically shows a further arrangement for producing a coil 1 dargterrorism.
  • the two halves of the winding tool 102, 103 are set at the same speed and direction in rotation.
  • the two halves of the winding tool 102, 103 are connected to each other by means of a coupling 107.
  • the forming winding tool 102, 103 is in two parts, so that the finished winding after winding can be easily removed from the winding tool 102, 103.
  • the rotating axis 101 preferably has the outer diameter D2, which corresponds to the inner diameter D1 of the coil 1 to be wound.
  • a wire guide 100 is arranged in the region of the rotating axis 101. By means of the wire guide 100, the electrical leads 2, 2 'are wound in the winding planes one above the other about the rotating axis 101.
  • the electrical line 2 ' which has the smallest distance d to the winding center, which is here formed by the rotating axis 101, guided at a lower speed about the rotating axis 101 as further outwardly disposed electrical lines 2.
  • the length of the farther inside arranged electrical lines 2 ' is thus shorter / than that of the more externally arranged electrical lines 2.
  • a shield 104 is parallel to the wire guide.
  • the shield 104 and the wire guide 100 are arranged on a slidable in the x-direction slide, which is not shown here for reasons of clarity. The carriage shifts the wire guide 100 and the shield 104 with increasing winding along the rotating axis 101.
  • the shield 104 additionally causes, because of strong pressure on already finished wound areas of the coil 1, these areas can no longer change their position. As soon as the wire guide 100 has almost reached the inner boundary of the right-hand winding tool 103, the ends of the electrical leads 2, 2 'are inserted into the slot-shaped recesses 105 of the right-hand winding tool 103 manually or by means of a tool. In this case, the wire guide 100 is no longer moved, so that further pressure can be exerted on the already wound areas of the coil 1 by the shield 104.
  • the windings can, for example, in the use of electrical lines 2, 2 'with a thermoplastic plastic casing, already during the winding by means of an infrared radiator or a hot air stream, the plastic casing are heated above the softening temperature of the plastic layer. After the coil has cooled below the softening temperature of the plastic covering, the finished wound coil 1 can be removed from the winding tool 102, 103.
  • the ends of the electrical lines 2, 2 ' are previously at least partially taken from the slot-shaped recesses 105 of the two halves of the winding tool, so that the ends can not tilt.
  • any electrical lines 2, 2 ' can be used.
  • the adhesive can pass through the entire winding, or alternatively only partial area such as the beginning or end of the roll.
  • the parts of the assembly which come in contact with the adhesive may be made of Teflon. This makes it possible to use epoxy or acrylic resins to stabilize the coil 1, without causing problems during demoulding.
  • the invention is not limited to the number of elements shown.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (15)

  1. Bobine, comportant :
    - au moins quatre câbles électriques (2, 2') ;
    - les câbles électriques (2, 2') étant enroulés autour d'un centre d'enroulement (3) commun ;
    - chacun des au moins quatre câbles électriques (2, 2') comportant sur la longueur totale de la bobine (1) un écartement constant par rapport au centre d'enroulement (3) de la bobine (1) et les enroulements de chaque câble étant disposés côte à côte ;
    - les câbles des plans d'enroulement étant disposés les uns au-dessus des autres, de sorte que les câbles électriques reposent les uns au-dessus des autres ;
    - la bobine (1) présentant une stabilité mécanique en soi et les câbles électriques étant en partie fixement reliés entre eux de façon mécanique ;
    caractérisé en ce que les câbles électriques sont reliés entre eux de façon mécanique à distances régulières ou irrégulières.
  2. Bobine selon la revendication 1, les câbles électriques (2, 2') étant isolés les uns des autres dans la zone des enroulements.
  3. Bobine selon l'une quelconque des revendications précédentes, les câbles électriques (2, 2') étant au contact les uns des autres au moins aux extrémités de la bobine (1).
  4. Bobine selon l'une quelconque des revendications précédentes, les câbles électriques (2, 2') se composant de fils individuels torsadés les uns dans les autres.
  5. Bobine selon l'une quelconque des revendications précédentes, les câbles électriques (2, 2') étant reliés entre eux de façon mécanique.
  6. Bobine selon l'une quelconque des revendications précédentes, la longueur du câble électrique (2) intérieur étant inférieure sur la totalité de la bobine (1) à la longueur du câble électrique (2') connexe vers l'extérieur.
  7. Bobine selon l'une quelconque des revendications précédentes, un coeur en ferrite (5) étant disposé dans le centre d'enroulement (3).
  8. Bobine selon l'une quelconque des revendications précédentes, la bobine (1) étant enveloppée d'une masse fondue.
  9. Procédé de fabrication d'une bobine :
    - au moins quatre câbles électriques (2, 2') étant comprimés sur un rouleau de guidage (12) en forme de cône à l'aide d'au moins un premier (10) et un deuxième rouleau de compression (11) en forme de cône ;
    - le rouleau de guidage (12) comportant des renfoncements (13) concentriques en forme de rainure ;
    - chacun des câbles électriques (2, 2') étant guidé dans un guide (13) séparé du rouleau de guidage (12) ;
    - les câbles électriques (2, 2') étant en partie reliés fixement entre eux de façon mécanique pendant le passage du rouleau de guidage (12) en reliant entre eux de façon mécanique les câbles électriques à des distances régulières ou irrégulières ;
    - les câbles électriques (2, 2') prenant une forme de vis après le passage du rouleau de guidage (12).
  10. Procédé selon la revendication 9, les câbles électriques (2, 2') étant reliés entre eux de façon mécanique lors du passage du rouleau de guidage.
  11. Procédé selon l'une quelconque des revendications 9 ou 10, la bobine (1) finie étant plongée dans un récipient de masse fondue.
  12. Procédé de fabrication d'une bobine :
    - au moins quatre câbles électriques (2, 2') étant enroulés autour d'un axe de rotation (101) d'un outil d'enroulement (102, 103) au moyen d'un guide-fil (100) ;
    - chaque câble électrique (2, 2') comportant un guide-fil (100) séparé ;
    - les câbles électriques (2, 2') étant enroulés dans un plan d'enroulement s'étendant perpendiculairement à l'axe de rotation (101) de l'outil d'enroulement (102, 103), de sorte que les enroulements de chaque câble sont disposés côte à côte et que les câbles des plans d'enroulement sont disposés les uns au-dessus des autres, de sorte que les câbles électriques reposent les uns au-dessus des autres ;
    - le guide-fil (100) étant guidé parallèlement à l'axe de rotation (101) avec un nombre croissant d'enroulements ;
    - les câbles électriques (2, 2') étant en partie reliés entre eux de façon mécanique pendant l'enroulement ;
    caractérisé en ce que les câbles électriques sont reliés entre eux de façon mécanique à distances régulières ou irrégulières.
  13. Procédé selon la revendication 12, les premières extrémités des câbles électriques (2, 2') étant fixées dans une première partie de l'outil d'enroulement (102).
  14. Procédé selon la revendication 12, les câbles électriques (2, 2') étant reliés entre eux pendant l'enroulement.
  15. Procédé selon l'une quelconque des revendications 12 à 14, la bobine (1) enroulée finie étant prise hors de l'outil d'enroulement (102, 103) et plongée dans un récipient de masse fondue.
EP09728741.1A 2008-03-31 2009-03-23 Bobine et procédé de fabrication d une bobine Active EP2272072B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008016488A DE102008016488A1 (de) 2008-03-31 2008-03-31 Spule und Verfahren zur Herstellung einer Spule
PCT/EP2009/053391 WO2009121749A1 (fr) 2008-03-31 2009-03-23 Bobine et procédé de fabrication d’une bobine

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EP2272072A1 EP2272072A1 (fr) 2011-01-12
EP2272072B1 true EP2272072B1 (fr) 2015-07-22

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US (1) US9424973B2 (fr)
EP (1) EP2272072B1 (fr)
JP (1) JP5753488B2 (fr)
CN (1) CN102047356A (fr)
DE (1) DE102008016488A1 (fr)
WO (1) WO2009121749A1 (fr)

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DE102014218874A1 (de) 2014-09-19 2016-03-24 Forschungszentrum Jülich GmbH Spule mit hoher Güte
MX2019003767A (es) 2016-10-03 2019-07-01 Smartwash Solutions Llc Sistema para controlar el agua utilizada para procesamiento de alimentos industriales.
JP6589934B2 (ja) * 2017-05-12 2019-10-16 株式会社村田製作所 巻線装置及びコイル部品の製造方法
JP7180559B2 (ja) * 2019-07-10 2022-11-30 株式会社村田製作所 コモンモードチョークコイル
CN113823485A (zh) * 2021-09-10 2021-12-21 厦门伊科电子有限公司 一种贴片e型电感器
CN114143679B (zh) * 2021-11-25 2024-04-19 淮安伟跃汽车配件有限公司 一种高保真扬声器音圈的绕制方法及其装置
CN114446631A (zh) * 2022-01-07 2022-05-06 山东电力设备有限公司 将垫块自动穿到撑条上的工艺方法
DE102022134667A1 (de) * 2022-12-23 2024-07-04 Rolls-Royce Deutschland Ltd & Co Kg Elektrische Spule und Verfahren zur Herstellung einer elektrischen Spule

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JP5753488B2 (ja) 2015-07-22
EP2272072A1 (fr) 2011-01-12
JP2011517077A (ja) 2011-05-26
DE102008016488A1 (de) 2009-10-01
US9424973B2 (en) 2016-08-23
US20110068886A1 (en) 2011-03-24
CN102047356A (zh) 2011-05-04
WO2009121749A1 (fr) 2009-10-08

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