EP3096335A1 - Procédé d'enroulement de bobine et bobineuse - Google Patents

Procédé d'enroulement de bobine et bobineuse Download PDF

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Publication number
EP3096335A1
EP3096335A1 EP15168564.1A EP15168564A EP3096335A1 EP 3096335 A1 EP3096335 A1 EP 3096335A1 EP 15168564 A EP15168564 A EP 15168564A EP 3096335 A1 EP3096335 A1 EP 3096335A1
Authority
EP
European Patent Office
Prior art keywords
wire
thermally conductive
conductive material
coil winding
coil
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.)
Withdrawn
Application number
EP15168564.1A
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German (de)
English (en)
Inventor
Konrad Artmann
Thomas Schaefer
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.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Priority to EP15168564.1A priority Critical patent/EP3096335A1/fr
Publication of EP3096335A1 publication Critical patent/EP3096335A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H01F27/2876—Cooling
    • 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
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
    • 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
    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings

Definitions

  • the present invention relates to a coil winding method in which in a winding process, an electrically conductive and ready electrically insulated wire is fed by means of a coil winding device to a bobbin and wound on this.
  • the present invention also relates to a coil winding device for supplying an electrically conductive and ready electrically insulated wire to a bobbin and for winding the wire on the bobbin.
  • Such coil winding methods and coil winding devices are basically known from the prior art and are used for producing coils for electrical machines such as hand tool machines.
  • the bobbin on which the wire is wound or wound may be a pole tooth of an electrical machine or have such.
  • a current is applied to the electrically conductive wire in order to convert electrical energy into mechanical energy, in particular rotational energy, by means of the electromotive principle.
  • the object is achieved in that during the winding process, a thermally conductive material is applied directly to the wire and / or the bobbin.
  • the invention includes the realization that current-charged coils have energy losses that lead to heating of the coil. This heat can typically be dissipated only radially outward poorly, since the windings of the coil often have no area contact with each other and remain between the wires air gaps. In the case of coils of the prior art, this disadvantageously leads to the fact that high-quality wire qualities have to be used or larger construction volumes of the coil are required.
  • a coil produced in accordance with the invention has the advantage that the heat generated during a current flow through the wire can now be dissipated to the outside in an improved manner. This is the one hand, the production of coils with more compact dimensions, that is higher power densities possible. Furthermore, the fact that now cheaper wire qualities are used for the production of the coil, a significant cost reduction in the production of coils achieved.
  • the fixation of the wire on the coil or the wires can be improved with each other.
  • the thermally conductive material is applied to the wire, if this is already located as an at least partially coil on the bobbin.
  • the method may provide that before or while the wire comes into contact with or wound onto the bobbin, thermally conductive material is also applied to the bobbin itself. This may be the case, for example, in the production of the first winding layer of the wire on the coil carrier.
  • thermally conductive material by a material application unit, based on a direction of rotation of the bobbin, leading and / or trailing applied to the wire and / or the bobbin.
  • a leading order of the thermally conductive material on the bobbin for example, each newly wound winding of the wire is embedded in the then already on the bobbin heat-conductive material.
  • a leading order may mean that initially a gap of a respectively underlying wire layer is first filled with the thermally conductive material and then the wire still to be wound is embedded at this point.
  • a wire section can first be wound onto the bobbin and then the thermally conductive material can be applied to this.
  • the thermally conductive material is applied to the wire or the coil carrier via a material application unit.
  • the material application unit can be moved relative, preferably in parallel, to a reel carrier longitudinal axis of the reel carrier.
  • the material application unit can be moved relative to the winding tool, preferably in the same direction as the winding tool, and / or carried along. If necessary, it is also possible to realize an opposite movement of the material application unit to the winding tool.
  • the method may provide that the thermally conductive material is a paste, an adhesive or a wax.
  • the thermally conductive material may be provided as a fluid, as a pad, or as a filamentary / unrollable material.
  • the thermally conductive material is sprayed onto the wire and / or the coil carrier.
  • the thermally conductive material can be applied to the still-to-be-wound wire.
  • a wire section already to be wound up may already have a thermally conductive material to be applied in the course of the method before this wire section comes into contact with the coil carrier.
  • the thermally conductive material is only applied to the wire after the wire has passed a winding tool of the coil winding device, which plastically deforms the wire.
  • the method may provide that the thermally conductive material is already applied to the wire before the wire passes a winding tool of the coil winding apparatus that plastically deforms the wire.
  • the thermally conductive material it is possible for the thermally conductive material to be applied to the wire while the wire passes through a winding tool of the coil winding apparatus that plastically deforms the wire.
  • the thermally conductive material is applied in strips along a longitudinal axis of the wire.
  • the thermally conductive material may be applied to the wire such that a respective cross section of the wire in the circumferential direction is only partially covered by thermally conductive material.
  • the thermally conductive material may be in the form of four strips equally spaced along the circumference of the wire. However, it is also possible that the thermally conductive material extends in more than four stripes.
  • the coil winding method may be a linear, needle or flyer winding method, and carried out on a linear, needle or bobbin winder, respectively.
  • the linear winding device may also be referred to as a layer winder or Bobinwickler.
  • the invention is also achieved by a coil device of the aforementioned type, wherein the coil winding device has a material application unit, by means of which during the winding process, a thermally conductive material can be applied directly to the wire and / or the bobbin.
  • the material application unit is arranged and arranged such that the thermally conductive material is applied to the wire when it is already located as an at least partially coil on the bobbin.
  • the material application unit may be arranged and arranged such that the thermally conductive material is first applied to the wire after the wire has passed a winding tool of the coil winding device, which plastically deforms the wire.
  • the material application unit may be arranged and arranged such that the thermally conductive material is already applied to the wire before the wire passes through the winding tool of the coil winding device, which plastically deforms the wire.
  • the material application unit may be arranged and arranged such that the thermally conductive material is applied to the wire while the wire passes through the winding tool of the coil winding apparatus, which plastically deforms the wire.
  • the material application unit is arranged and arranged such that the thermally conductive material is applied in strips along a longitudinal axis of the wire, preferably applied to the wire such that a respective cross section of the wire is only partially covered in the circumferential direction of thermally conductive material.
  • the coil winding device can be designed and set up such that the material application unit applies the heat-conductive material to the wire or the coil carrier in advance and / or trailing relative to a direction of rotation of the coil carrier.
  • the coil winding device is designed and set up so that the material application unit is moved during the winding process relative to the winding tool, preferably in the same direction as the winding tool.
  • this coil winding device is designed and set up so that the material application unit is moved relatively, preferably in parallel, to a coil carrier longitudinal axis of the coil carrier during the winding process and / or the material application unit is carried along with the winding tool.
  • the features described with reference to the coil winding method should also be deemed to be disclosed with respect to the coil winding assembly and vice versa.
  • the coil winding device is designed to apply the thermally conductive material to the wire still to be wound.
  • Fig. 1 shows a coil winding device 100 according to the invention for supplying an electrically conductive and already electrically insulated wire 1 on a to a coil carrier 20 and for winding the wire 1 on the bobbin 20.
  • the coil winding device 100 has a material application unit 30, by means of which during the winding process, a thermally conductive material 3 can be applied to the wire 1 and the bobbin 20.
  • the wire 1 is plastically deformed by a winding tool 10 and fed to the bobbin 20, wherein the bobbin is rotatably mounted about its Spulenitatil Kunststoffsachse 21, so that the wire 1 can be wound on the bobbin 20 by rotation of the bobbin 20.
  • the thermally conductive material 3 is in in Fig. 1 illustrated embodiment applied to a material application unit 30, wherein the material application unit 30 is formed along the movement axis 31 movable.
  • a coil winding method according to the invention is carried out, in which in a winding process the electrically conductive and already electrically insulated wire 1 is fed by means of the coil winding device 100 or by its winding tool 10 to a coil carrier 20 and wound onto it, wherein the thermally conductive material 3 on the coil carrier 20 is applied.
  • Fig. 1 the state is shown in which an incomplete first layer of the wire 1 is located on the bobbin 20 and the thermally conductive material 3 is applied to the bobbin 20 when the wire is already at least partially located as a spool on the bobbin 20.
  • the thermally conductive material 3 is provided as a thread-like and unrollable material.
  • the thermally conductive material 3 may be, for example, medium viscosity to solid.
  • the coil winding device 100 is set up so that the thermally conductive material 3 is applied in advance to the coil carrier 20 by the material application unit 30.
  • the material application unit 30 is movably arranged along the movement axis 31 with respect to the coil carrier 20, the movement axis 31 extending parallel to the coil carrier longitudinal axis 21.
  • the material application unit 30 is carried along in the same direction to the winding tool 10, wherein first the thermally conductive material 3 is applied to the bobbin 20 and then a mecanicwickelnder portion of the wire 1 is embedded in the thermally conductive material 3.
  • the thermal conductivity of the coil is improved, so that a loss of heat can be dissipated to the outside in an improved manner.
  • the winding tool 10 and the material application unit 30 are arranged on opposite sides of the coil carrier 20.
  • the thermally conductive material 3 is first applied to the coil carrier 20 or in further layers only on the wire 1, after the wire 1, the winding tool 10 of the coil winding device 100, which has the wire 1 plastically deformed, passed.
  • FIG. 2 illustrated embodiment 100 corresponds substantially to the reference to Fig. 1 described embodiment, wherein in Fig. 2 the winding of a second layer of the wire 1 on the bobbin 20 is shown.
  • the material application unit 30 is carried forward to the winding tool 10, so that a still wound portion of the wire 1 is embedded in the thermally conductive material 3, as can be seen on the upper side of the bobbin.
  • the coil winding method described on the coil winding apparatus 100 of the Fig. 2 is carried out, comes a thermally conductive material 3 having a higher viscosity than in Fig. 1 used, which is recognizable by the fact that the thermally conductive material 3 emerges from the material application unit 30 in the form of a slightly widening jet.
  • Fig. 3 shows a coil winding device 100, for example, the Fig. 1 , in side view. Again Fig. 3 can be removed, the winding tool 10 and the material application unit 30 are arranged on opposite sides of the coil carrier 20 to be wound.
  • Fig. 3 be well taken that the order of the thermally conductive material 3 by the material application unit 30 in advance with respect to the direction of rotation R of the bobbin 20 takes place.
  • the thermally conductive material 3 may be, for example, medium viscosity to solid.
  • Fig. 4 now an embodiment of a coil winding device 100 is shown, are arranged in the material application unit 30 and winding tool 10 on the same side of the bobbin. Again Fig. 4 can be removed, an order of the thermally conductive material 3 is carried by the material application unit 30 trailing on the bobbin 20, based on the direction of rotation R.
  • the thermally conductive material 3 may be, for example, medium viscosity to solid.
  • Fig. 5 illustrated embodiment takes place in the coil winding method according to the invention, an order of the thermally conductive material 30 on the wire 1, if this is already located as a coil on the bobbin 20, wherein in the embodiment of Fig. 5 an order of the thermally conductive material 3 by way of example by means of spraying. Accordingly, a jet of the exiting sprayable material 3 is significantly widened at an exit point 30 of the material application unit.
  • the material application unit 30 is movably mounted along the movement axis 31, whereby the movement axis 31 runs parallel to the coil carrier longitudinal axis 21.
  • a spraying takes place after a wire is already on the bobbin 20 is located. Like the same Fig. 5 can be removed, it is covered as a coil on the bobbin 20 befind Anlagen wire 1 with the sprayed thermally conductive material 3, so that in a higher position on the bobbin 20 unwound portion of the wire 1 in the thermally conductive material 3, on the respectively below lying position of the wire 1 is embedded.
  • the material application unit 30 in a transverse direction 32 transversely (which includes perpendicular) to the coil longitudinal axis 21 arranged movable and is preferably carried transversely.
  • the material application unit 30 can advantageously be moved with increasing number of layers of the wire 1 in the course of the progressive winding process such that a constant distance between the material application unit 30 is maintained for each current position of the wire.
  • the material application unit 30 is arranged and arranged such that the thermally conductive material 3 is applied to the still to be wound wire 1, that is, in particular before the wire 1 comes into contact with the bobbin 20.
  • the winding tool 10 is disposed immediately adjacent to the material application unit 30.
  • the thermally conductive material 30 is first applied to the wire 1, after the wire 1, the winding tool 10, which in the present case the wire 1 also plastically deformed, has happened.
  • the embodiment shown results in the advantage that the material application unit 30 and the winding tool 10 by one and the same drive unit (not shown) can be moved.
  • the thermally conductive material 3 may, for example, be low to firm.
  • the material application unit 30 of the coil winding device 100 is arranged and arranged such that the thermally conductive material 3 is applied to the wire 1 while the wire 1 passes through the winding tool 10 of the coil winding device 100, which plastically deforms the wire 1. This results in a particularly compact design.
  • a reservoir 35 may be provided for storing the thermally conductive material 3.
  • the material application unit 30 is arranged and arranged such that the thermally conductive material 3 is applied in strips along a longitudinal axis L of the wire 1.
  • thermally conductive material 3 in the form of four strips which are uniformly spaced along the circumference U of the wire 1 from each other.
  • the thermally conductive material 3 which runs in four strips, provided as low viscous to highly viscous material, so that there is an approximately circular deposition of the thermally conductive material 3 on the bobbin 20 in the sectional view.
  • an order of the thermally conductive material 3 takes place on the bobbin 20 at an outlet opening 13 of the winding tool 10th
  • a coil winding device 100 is also shown in which the thermally conductive material is applied to the wire 1 while the wire 1 passes through the winding tool 10. This does not happen as at Fig. 7 at an outlet opening 13 of the winding tool 10, but within the winding tool 10 itself. This results in how the Fig. 8 can be removed on the right side, a profile of the thermally conductive material 3, in which the thermally conductive material 3 conforms better to the wire 1.
  • Fig. 9 In the in Fig. 9 embodiment shown is in contrast to those with reference to FIGS. 7 and 8 described embodiments, an order of the thermally conductive material 3 on the wire 1 before it passes a winding tool 10 of the coil winding apparatus 100, which plastically deformed the wire 1.
  • the material application unit 30 is arranged relative to the longitudinal axis L (in the arrow direction) of the wire 1 in front of an inlet opening 15 of the winding tool 10.
  • the winding tool 10 has in illustrated embodiment, an inner comb 17 through which the thermally conductive material 4, which is already on entry of the wire 1 in the winding tool 10 on the wire 1, evenly distributed on the wire 1, which in Fig. 9 is indicated by the hatching of the wire 1 after its passage through the winding tool 10.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP15168564.1A 2015-05-21 2015-05-21 Procédé d'enroulement de bobine et bobineuse Withdrawn EP3096335A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15168564.1A EP3096335A1 (fr) 2015-05-21 2015-05-21 Procédé d'enroulement de bobine et bobineuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15168564.1A EP3096335A1 (fr) 2015-05-21 2015-05-21 Procédé d'enroulement de bobine et bobineuse

Publications (1)

Publication Number Publication Date
EP3096335A1 true EP3096335A1 (fr) 2016-11-23

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EP15168564.1A Withdrawn EP3096335A1 (fr) 2015-05-21 2015-05-21 Procédé d'enroulement de bobine et bobineuse

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017194444A1 (fr) * 2016-05-13 2017-11-16 Hilti Aktiengesellschaft Procédé de fixation d'un enroulement de bobine
EP4047797A1 (fr) * 2021-02-18 2022-08-24 Hilti Aktiengesellschaft Amélioration de la connexion thermique des bobines traversées par un courant électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1840139A (en) * 1929-02-26 1932-01-05 Gen Electric Electrical coil
JPS5683246A (en) * 1979-12-12 1981-07-07 Hitachi Ltd Manufacturing of magnetic field coil
US4554730A (en) * 1984-01-09 1985-11-26 Westinghouse Electric Corp. Method of making a void-free non-cellulose electrical winding
DE19919069A1 (de) * 1999-04-27 2000-11-02 Abb T & D Tech Ltd Verfahren zur Herstellung einer Wicklung und Wicklung
US20080040912A1 (en) * 2005-02-25 2008-02-21 Michel Aeschlimann Method for Making a Coil for a Rotating Electrical Machine Rotor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1840139A (en) * 1929-02-26 1932-01-05 Gen Electric Electrical coil
JPS5683246A (en) * 1979-12-12 1981-07-07 Hitachi Ltd Manufacturing of magnetic field coil
US4554730A (en) * 1984-01-09 1985-11-26 Westinghouse Electric Corp. Method of making a void-free non-cellulose electrical winding
DE19919069A1 (de) * 1999-04-27 2000-11-02 Abb T & D Tech Ltd Verfahren zur Herstellung einer Wicklung und Wicklung
US20080040912A1 (en) * 2005-02-25 2008-02-21 Michel Aeschlimann Method for Making a Coil for a Rotating Electrical Machine Rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017194444A1 (fr) * 2016-05-13 2017-11-16 Hilti Aktiengesellschaft Procédé de fixation d'un enroulement de bobine
EP4047797A1 (fr) * 2021-02-18 2022-08-24 Hilti Aktiengesellschaft Amélioration de la connexion thermique des bobines traversées par un courant électrique

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