EP3084781A1 - Electric solenoid and use of an electric solenoid - Google Patents

Electric solenoid and use of an electric solenoid

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Publication number
EP3084781A1
EP3084781A1 EP14806274.8A EP14806274A EP3084781A1 EP 3084781 A1 EP3084781 A1 EP 3084781A1 EP 14806274 A EP14806274 A EP 14806274A EP 3084781 A1 EP3084781 A1 EP 3084781A1
Authority
EP
European Patent Office
Prior art keywords
coil
wire
aluminum
electric coil
electric
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.)
Granted
Application number
EP14806274.8A
Other languages
German (de)
French (fr)
Other versions
EP3084781B1 (en
Inventor
Bernd Stuke
Martin Koehne
Robert Giezendanner-Thoben
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3084781A1 publication Critical patent/EP3084781A1/en
Application granted granted Critical
Publication of EP3084781B1 publication Critical patent/EP3084781B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • 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
    • 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
    • H01F27/2847—Sheets; Strips

Definitions

  • the invention relates to an electric coil according to the preamble of claim 1. Furthermore, the invention relates to the use of an inventive
  • An electric coil according to the preamble of claim 1 is part of a fuel! Njektors for injecting fuel into the combustion chamber of an internal combustion engine from practice already known.
  • the electric coil serves to actuate an injection member, for example in the form of a nozzle needle, indirectly or directly in order to close or release injection openings formed in the fuel injector.
  • the coil wire usually consists of a wire core made of copper, which is surrounded by an insulator layer, for example, baked enamel.
  • an insulator layer for example, baked enamel.
  • an injector at high temperatures can be critical. For this reason, it is common to have the packing or power density of such Increase electric coils. This is done for example by a profile wire, with which it is possible, the degree of filling of the wire windings on a
  • the invention has the object, an electric coil according to the preamble of claim 1 such that the strong in the prior art
  • Temperature-dependent resistance characteristic of the electric coil is reduced.
  • the highest possible power density i.
  • the highest possible magnetic actuation force can be achieved.
  • This object is achieved in an electric coil with the features of claim 1, characterized in that the wire core of the coil wire made of aluminum and arranged with the aluminum in electrically conductive contact graphene.
  • Such a material mix has the advantage that it has a combination of the relatively low change in resistance over the course of temperature known from aluminum and an overall relatively low specific resistance, similar to the use of copper.
  • Graphene at least substantially homogeneous in cross section of the wire core in Distributed aluminum and arranged oriented in the power line direction.
  • graphene is usually formed in the form of platelets, ie a very thin cross-section having elements, so that it is essential that the orientation of the graph in the power line direction.
  • the individual graphene elements may be spatially separated from one another in the direction of the current line, or, particularly advantageously, to be overlapping one another so that a continuous conductive graphene layer is achieved in the current line direction.
  • the individual Graphen elements are separated in the power line direction, finds an electrical line between the
  • the power line reducing effects such as air inclusions or the like, are present.
  • the graphene in an alternative embodiment of the invention, it is also possible for the graphene to be formed as a layer which is separate from the aluminum and electrically conductively connected to the aluminum, preferably in the direction of flow, preferably on a surface of the wire core.
  • the two components serving the power line, the aluminum and the graphene may optionally be formed in separate manufacturing processes or manufacturing steps, which are subsequently connected to one another in an electrically conductive manner.
  • the aluminum serves as a carrier material for arranging or training of graphene.
  • the commonly used insulating layers of plastic eg baked enamel
  • the insulating layer does not serve the power line, a decreasing packing density or performance of the electric coil results with an increasing thickness of the insulating layer.
  • the insulating layer it is particularly preferred according to the invention for the insulating layer to have an aluminum oxide layer with a thickness of between 1 ⁇ m and 10 ⁇ m. preferably between 2 ⁇ and 5 ⁇ .
  • An oxide layer has the advantage over the use of plastic in particular that it has a high thermal conductivity and thus also allows a relatively effective dissipation of the heat of the coil wire.
  • the performance of the electric coil is increased by an increased filling factor by the particularly thin design of the insulating layer compared to an insulating layer made of plastic.
  • Aluminum oxide takes place in particular by anodic oxidation (anodizing process).
  • the anodic oxidation is an electrolytic process by which an oxide layer is produced on a surface which is reinforced by about a factor of 100 compared with a naturally formed (oxide) layer, so that in practice a 4 ⁇ thick insulating layer is sufficient with sufficient voltage breakdown.
  • a particular embodiment of the insulating layer provides that the insulating layer only partially covers the graphene. This is especially true
  • Power line is used and has a very low electrical resistance, it is essential that each covers an insulating layer overlying the underlying, partially exposed graphene layer when winding over the coil wire.
  • a geometrical configuration of the coil wire in which the latter has at least essentially a rectangular cross section, is very particularly preferred.
  • Such a design increases the fill factor and thus the power density of the electric coil to a particularly high degree and therefore allows for a certain performance particularly small or compact electrical coils.
  • the coil wire has a width has, which corresponds to the width of the bobbin in the longitudinal direction thereof.
  • the same effect can alternatively be achieved by having the coil wire having a width 1 / n times the width of the coil
  • Coil in the longitudinal direction corresponds, and if two in
  • Such an electric coil according to the invention therefore finds particular use as part of a motor vehicle injection component, in particular one
  • the electric coil according to the invention can be used in all applications in which a particularly high performance and / or a small installation space for the electric coil is desired.
  • FIG. 4 shows a cross section through a comparison with FIG. 3 Modified
  • Fig. 5 is a representation of the resistance curve different
  • an electric coil 10 according to the invention is shown, as used for example as part of a motor vehicle injection component in the form of a fuel injector.
  • the electric coil 10 serves for the at least indirect actuation of an injection valve member (nozzle needle) into the fuel! njektor.
  • the electric coil 10 comprises a plastic, in the
  • Injection molding process produced bobbin 11 in the form of a sleeve with two laterally arranged, the bobbin 11 longitudinally delimiting, radially circumferential flanges 12, 13 and concentric with the longitudinal axis 14 of the bobbin 11 arranged in this recess 15. Between the two flanges 12, 13 forms the Bobbin 11 a particular circular peripheral surface 16 for the arrangement of at least one
  • Coil wire unit 20 off are in
  • Axial direction of the longitudinal axis 14 considered two coil wire units 20 provided on the bobbin 11, which are electrically conductively connected to each other (not shown) by a wire end of a coil wire unit 20 is connected to a wire end of the other coil wire unit 20.
  • the coil wire 25, 25 a of the coil wire unit 20, which is wound in the form of a plurality of turns on the bobbin 11, consists of two
  • the coil wire 25 is provided with a
  • Wire core 23 consisting of aluminum 21st In the power line direction, i.
  • 21 plates of graphene 22 are arranged in the aluminum, wherein the platelets are perpendicular to the plane of Fig. 3 either all directly electrically connected in the form of a band, or arranged at intervals to each other.
  • the distribution of the graphene 22 within the wire core 23 or the aluminum 21 is at least substantially homogeneous.
  • the coil wire 25 having a rectangular cross-section of the width b is of a particularly uniform wall thickness a
  • Insulation layer 26 over the entire cross section of the coil wire 25 surrounded.
  • the insulating layer 26 is formed as an aluminum oxide layer 27 and produced, for example, in the anodizing process.
  • the wall thickness a of the insulating layer 26 is between 1 ⁇ and 10 ⁇ , preferably between 2 ⁇ and 5 ⁇ , most preferably 4 ⁇ .
  • Such a manufactured coil wire 25 can be stored in accordance with the representation of FIG. 2 in the form of a wound-up belt 28 or processed by machine.
  • FIG. 4 a comparison with FIG. 3 modified coil wire 25a is shown.
  • the wire core 23 of the coil wire 25a is made of aluminum 21 without
  • the graphene 22 is applied as a band-shaped layer on the surface or on the upper side 29 of the wire core 23 and connected to it in an electrically conductive manner.
  • the insulating layer 26 also consists of an aluminum oxide layer 27, which completely surrounds the wire core 23 in the area outside of the graphene 22. In the field of graphene 22 reaches the
  • Insulation layer 26 side up to the graphene 22 zoom, but the graph 22 is not on the wire core 23 facing away from the top of the
  • Insulating layer 26 surrounded or covered.
  • the specific resistance R s (Y-axis) of various materials is shown above the temperature T (x-axis).
  • the reference numeral 31 shows the course of the specific resistance R s of aluminum, while the reference numeral 32 illustrates the course of the resistivity R s of copper.
  • the reference number 33 shows the specific resistance R s of the material combination according to the invention, consisting of aluminum 21 and graphene 22. It can be seen that such a combination of materials has an almost constant or only slightly increasing specific resistance R s as the temperature rises, which with respect to its
  • the electric coil 10 according to the invention can be modified or modified in many ways, without departing from the spirit of the invention. It is conceivable, for example, instead of a substantially rectangular cross-section for the coil wire 25, 25a to form this cross-section square or, in the case of the graphite 22 arranged in the aluminum 21, roundly. It should also be noted that the use of the invention should not be limited to electric coils 10, which serve as part of a fuel injection component.

Abstract

The invention relates to an electric solenoid (10) comprising at least one solenoid body (11) and a magnet wire (25; 25a) surrounding the solenoid body (11) in the form of at least one winding on a peripheral surface (16) of said solenoid body (11), the magnet wire (25; 25a) consisting of an electrically conductive wire core (23) and an insulation layer (26) which at least partially surrounds the wire core (23). According to the invention, the wire core (23) consists of aluminium (21) and graphene (22) which is in electrically conductive contact with the aluminium (21).

Description

Beschreibung  description
Titel title
Elektrospule und Verwendung einer Elektrospule  Electric coil and use of an electric coil
Stand der Technik State of the art
Die Erfindung betrifft eine Elektrospule nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung die Verwendung einer erfindungsgemäßen The invention relates to an electric coil according to the preamble of claim 1. Furthermore, the invention relates to the use of an inventive
Elektrospule. Electric coil.
Eine Elektrospule nach dem Oberbegriff des Anspruchs 1 ist als Bestandteil eines Kraftstoff! njektors zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine aus der Praxis bereits bekannt. Insbesondere dient die Elektrospule dazu, mittel- oder unmittelbar ein Einspritzglied, beispielsweise in Form einer Düsennadel, zu betätigen, um im Kraftstoffinjektor ausgebildete Einspritzöffnungen zu verschließen bzw. freizugeben. An electric coil according to the preamble of claim 1 is part of a fuel! Njektors for injecting fuel into the combustion chamber of an internal combustion engine from practice already known. In particular, the electric coil serves to actuate an injection member, for example in the form of a nozzle needle, indirectly or directly in order to close or release injection openings formed in the fuel injector.
Übliche Elektrospulen weisen einen aus Kunststoff bestehenden Spulenkörper auf, auf den eine große Anzahl von Windungen eines Spulendrahts aufgewickelt ist. Der Spulendraht besteht üblicherweise aus einem Drahtkern aus Kupfer, der von einer Isolatorschicht, zum Beispiel Backlack, umgeben ist. Die Verwendung von Kupfer als Drahtkern hat zwar den Vorteil eines relativ niedrigen spezifischen Widerstandes, jedoch ist dieser Wderstand temperaturabhängig, derart, dass bei steigender Temperatur sich auch der Wderstand des Kupferdrahts erhöht. Dies hat zur Folge, dass bei einem Betrieb beispielsweise eines Kraftstoff! njektors, der in einem Zylinderkopf einer Brennkraftmaschine eingesetzt ist, sich die Conventional electric coils have a plastic bobbin on which a large number of turns of a coil wire is wound. The coil wire usually consists of a wire core made of copper, which is surrounded by an insulator layer, for example, baked enamel. Although the use of copper as a wire core has the advantage of a relatively low resistivity, but this Wderstand is temperature-dependent, such that with increasing temperature and the resistance of the copper wire increases. This has the consequence that in one operation, for example, a fuel! Njektors, which is used in a cylinder head of an internal combustion engine, the
Temperatur des Kraftstoff! njektors und somit auch die Temperatur der Temperature of the fuel! Njektors and thus the temperature of the
Elektrospule erhöht, was zu einem erhöhten elektrischen Widerstand des Spulendrahts führt. Dies hat eine mit zunehmender Temperatur geringer werdende Magnetkraft zur Folge, so dass die einwandfreie Funktion Electric coil increases, resulting in an increased electrical resistance of the coil wire. This has a decreasing magnetic force with increasing temperature result, so that the proper function
beispielsweise eines Einspritzglieds bei hohen Temperaturen kritisch sein kann. Aus diesem Grund ist es üblich, die Packungs- bzw. Leistungsdichte derartiger Elektrospulen zu erhöhen. Dies erfolgt beispielsweise durch einen Profildraht, mit dem es ermöglicht wird, den Füllgrad der Drahtwicklungen auf einen For example, an injector at high temperatures can be critical. For this reason, it is common to have the packing or power density of such Increase electric coils. This is done for example by a profile wire, with which it is possible, the degree of filling of the wire windings on a
Spulenkörper zu erhöhen. Increase bobbin.
Da die Tendenz bei zukünftigen Einspritzsystemen mehr und mehr zu hohen Systemdrücken und damit auch zu höheren erforderlichen Betätigungskräften für ein Einspritzglied geht, sind zukünftige Anforderungen ohne eine Erhöhung der Baugröße einer Elektrospule immer schwieriger mit konventionellen Since the tendency of future injection systems is more and more to high system pressures and thus higher required actuating forces for an injector, future requirements without increasing the size of an electric coil are increasingly difficult with conventional
Elektrospulen gemäß dem Stand der Technik zu erfüllen. To meet electrical coils according to the prior art.
Offenbarung der Erfindung Disclosure of the invention
Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Elektrospule nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass die beim Stand der Technik stark Based on the illustrated prior art, the invention has the object, an electric coil according to the preamble of claim 1 such that the strong in the prior art
temperaturabhängige Widerstandcharakteristik der Elektrospule verringert wird. Darüber hinaus soll eine möglichst hohe Leistungsdichte, d.h. bei einer bestimmten Baugröße eines Spulenkörpers eine möglichst hohe magnetische Betätigungskraft erzielt werden können. Diese Aufgabe wird erfindungsgemäß bei einer Elektrospule mit den Merkmalen des Anspruchs 1 dadurch gelöst, dass der Drahtkern des Spulendrahts aus Aluminium sowie mit dem Aluminium in elektrisch leitendem Kontakt angeordneten Graphen besteht. Ein derartiger Materialmix hat den Vorteil, dass es eine Kombination aus der von Aluminium bekannten relativ geringen Wderstandsänderung über dem Temperaturverlauf und einem insgesamt gesehen relativ geringen spezifischen Widerstand, ähnlich der Verwendung von Kupfer, aufweist. Temperature-dependent resistance characteristic of the electric coil is reduced. In addition, the highest possible power density, i. For a given size of a bobbin the highest possible magnetic actuation force can be achieved. This object is achieved in an electric coil with the features of claim 1, characterized in that the wire core of the coil wire made of aluminum and arranged with the aluminum in electrically conductive contact graphene. Such a material mix has the advantage that it has a combination of the relatively low change in resistance over the course of temperature known from aluminum and an overall relatively low specific resistance, similar to the use of copper.
Vorteilhafte Weiterbildungen der erfindungsgemäßen Elektrospule sind in den Unteransprüchen aufgeführt. In den Rahmen der Erfindung fallen sämtliche Kombinationen aus zumindest zwei von in den Ansprüchen, der Beschreibung und/oder den Figuren offenbarten Merkmalen. Advantageous developments of the electric coil according to the invention are listed in the subclaims. All combinations of at least two of the features disclosed in the claims, the description and / or the figures fall within the scope of the invention.
Um die angesprochene, erfindungsgemäße Materialkombination zu realisieren, ist es in einer ersten Ausgestaltung der Erfindung vorgesehen, dass das In order to realize the mentioned material combination according to the invention, it is provided in a first embodiment of the invention that the
Graphen zumindest im Wesentlichen homogen im Querschnitt des Drahtkerns im Aluminium verteilt und in Stromleitungsrichtung orientiert angeordnet ist. Hierzu sei angemerkt, dass Graphen üblicherweise in Form von Plättchen, d.h. einen sehr dünnen Querschnitt aufweisenden Elementen ausgebildet ist, so dass es wesentlich ist, dass die Orientierung des Graphen in Stromleitungsrichtung erfolgt. Dabei kann es möglich sein, dass in Stromleitungsrichtung betrachtet die einzelnen Graphenelemente örtlich voneinander getrennt sind, oder aber, besonders vorteilhaft, einander überlappend angeordnet sind, so dass in Stromleitungsrichtung eine durchgehend leitende Graphenschicht erzielt wird. Für den Fall, dass die einzelnen Graphenelemente in Stromleitungsrichtung voneinander getrennt sind, findet eine elektrische Leitung zwischen den Graphene at least substantially homogeneous in cross section of the wire core in Distributed aluminum and arranged oriented in the power line direction. It should be noted that graphene is usually formed in the form of platelets, ie a very thin cross-section having elements, so that it is essential that the orientation of the graph in the power line direction. In this case, it may be possible for the individual graphene elements to be spatially separated from one another in the direction of the current line, or, particularly advantageously, to be overlapping one another so that a continuous conductive graphene layer is achieved in the current line direction. In the event that the individual Graphen elements are separated in the power line direction, finds an electrical line between the
Graphenelementen durch das in elektrisch leitendem Kontakt mit dem Graphen angeordneten Aluminiums statt. Daher ist es auch von Bedeutung bzw.  Graphene elements by the arranged in electrically conductive contact with the graphene aluminum instead. Therefore, it is also important or
wesentlich, dass innerhalb des Querschnitts zumindest im Wesentlichen keine, die Stromleitung reduzierende Effekte, wie beispielsweise Lufteinschlüsse oder ähnliches, vorhanden sind. essential that within the cross section at least substantially no, the power line reducing effects, such as air inclusions or the like, are present.
In alternativer Ausgestaltung der Erfindung ist es auch möglich, dass das Graphen als eine von dem Aluminium separate und mit dem Aluminium elektrisch leitend verbundene, in Stromrichtung vorzugsweise durchgehende Schicht, vorzugsweise an einer Oberfläche des Drahtkerns, ausgebildet ist. Bei einer derartigen Ausführungsform wird als vorteilhaft angesehen, dass die beiden der Stromleitung dienenden Bestandteile, das Aluminium und das Graphen, ggf. in separaten Herstellungsverfahren bzw. Herstellungsschritten ausgebildet werden können, die anschließend elektrisch leitend miteinander verbunden werden. Alternativ ist es auch möglich, auf eine bereits vorhandene In an alternative embodiment of the invention, it is also possible for the graphene to be formed as a layer which is separate from the aluminum and electrically conductively connected to the aluminum, preferably in the direction of flow, preferably on a surface of the wire core. In such an embodiment, it is considered advantageous that the two components serving the power line, the aluminum and the graphene, may optionally be formed in separate manufacturing processes or manufacturing steps, which are subsequently connected to one another in an electrically conductive manner. Alternatively, it is also possible to use an existing one
Aluminiumschicht bzw. einem Aluminiumträger das Graphen anzuordnen bzw. abzuscheiden. Somit dient das Aluminium als Trägermaterial zur Anordnung bzw. Ausbildung des Graphens. Beim Stand der Technik weisen die üblicherweise verwendeten Isolierschichten aus Kunststoff (z.B. Backlack) bei der Verwendung von Kupferdrähten eine Dicke von ca. 50μηι auf. Da die Isolationsschicht nicht der Stromleitung dient, ergibt sich mit einer zunehmenden Dicke der Isolationsschicht eine abnehmende Packungsdichte bzw. Leistungsfähigkeit der Elektrospule. Aus diesem Grund ist es erfindungsgemäß besonders bevorzugt vorgesehen, dass die Isolierschicht eine Aluminium-Oxidschicht mit einer Dicke zwischen 1 μηι und 10μηι, vorzugsweise zwischen 2μηι und 5μηι ist. Eine Oxidschicht hat gegenüber der Verwendung von Kunststoff insbesondere den Vorteil, dass diese eine hohe Wärmeleitfähigkeit aufweist und somit auch eine relativ effektive Abfuhr der Wärme des Spulendrahts ermöglicht. Darüber hinaus wird durch die besonders dünne Ausbildung der Isolierschicht im Vergleich zu einer aus Kunststoff bestehenden Isolierschicht die Leistungsfähigkeit der Elektrospule durch einen erhöhten Füllfaktor vergrößert. Die Beschichtung bzw. Ausbildung mit Aluminum layer or an aluminum support to arrange the graph or to separate. Thus, the aluminum serves as a carrier material for arranging or training of graphene. In the prior art, the commonly used insulating layers of plastic (eg baked enamel) with the use of copper wires to a thickness of about 50μηι on. Since the insulating layer does not serve the power line, a decreasing packing density or performance of the electric coil results with an increasing thickness of the insulating layer. For this reason, it is particularly preferred according to the invention for the insulating layer to have an aluminum oxide layer with a thickness of between 1 μm and 10 μm. preferably between 2μηι and 5μηι. An oxide layer has the advantage over the use of plastic in particular that it has a high thermal conductivity and thus also allows a relatively effective dissipation of the heat of the coil wire. In addition, the performance of the electric coil is increased by an increased filling factor by the particularly thin design of the insulating layer compared to an insulating layer made of plastic. The coating or training with
Aluminiumoxid erfolgt insbesondere durch anodische Oxidation (Eloxal- Verfahren). Die anodische Oxidation ist ein elektrolytisches Verfahren, durch das eine Oxidschicht auf einer Oberfläche erzeugt wird, welche gegenüber einer natürlich gebildeten (Oxid-)Schicht um etwa das Hundertfache verstärkt ist, so dass bei ausreichender Spannungsdurchschlagsfestigkeit in der Praxis eine 4μηι dicke Isolierschicht ausreicht. Eine besonders Ausgestaltung der Isolierschicht sieht vor, dass die Isolierschicht das Graphen lediglich teilweise überdeckt. Dies ist insbesondere dann Aluminum oxide takes place in particular by anodic oxidation (anodizing process). The anodic oxidation is an electrolytic process by which an oxide layer is produced on a surface which is reinforced by about a factor of 100 compared with a naturally formed (oxide) layer, so that in practice a 4μηι thick insulating layer is sufficient with sufficient voltage breakdown. A particular embodiment of the insulating layer provides that the insulating layer only partially covers the graphene. This is especially true
vorgesehen, wenn Aluminiumbänder verwendet werden, bei denen das Graphen auf eine Seite als Beschichtung aufgebracht ist. Da das Graphen der when using aluminum strips where the graphene is coated on one side. Since the graph of
Stromleitung dient und einen sehr geringen elektrischen Wderstand aufweist, ist es dabei wesentlich, das beim Übereinanderwickeln des Spulendrahts jeweils eine Isolierschicht die darunter liegende, teilweise freiliegende Graphenschicht überdeckt. Power line is used and has a very low electrical resistance, it is essential that each covers an insulating layer overlying the underlying, partially exposed graphene layer when winding over the coil wire.
Ganz besonders bevorzugt ist darüber hinaus eine geometrische Ausgestaltung des Spulendrahts, bei der dieser zumindest im Wesentlichen einen rechteckigen Querschnitt aufweist. Eine derartige Ausbildung erhöht den Füllfaktor und somit die Leistungsdichte der Elektrospule in besonders hohem Maße und ermöglicht daher bei einer bestimmten Leistung besonders klein bzw. kompakt bauende Elektrospulen. In addition, a geometrical configuration of the coil wire, in which the latter has at least essentially a rectangular cross section, is very particularly preferred. Such a design increases the fill factor and thus the power density of the electric coil to a particularly high degree and therefore allows for a certain performance particularly small or compact electrical coils.
Um einen Spulenkörper über dessen gesamte axiale Länge mit einem derartigen, einen rechteckigen Querschnitt aufweisenden Spulendraht bewickeln zu können, um eine möglichst hohe Leistungsdichte bzw. einen möglichst hohen Füllfaktor zu ermöglichen, ist es darüber hinaus in einer bevorzugten Ausgestaltung vorgesehen, dass der Spulendraht eine Breite aufweist, die der Breite des Spulenkörpers in dessen Längsrichtung entspricht. Der gleiche Effekt kann alternativ jedoch auch dadurch erzielt werden, wenn der Spulendraht eine Breite aufweist, die einem 1/n-fachen der Breite des In order to be able to wind a bobbin over its entire axial length with such a coil wire having a rectangular cross-section in order to enable the highest possible power density or the highest possible fill factor, it is furthermore provided in a preferred embodiment that the coil wire has a width has, which corresponds to the width of the bobbin in the longitudinal direction thereof. However, the same effect can alternatively be achieved by having the coil wire having a width 1 / n times the width of the coil
Spulenkörpers in dessen Längsrichtung entspricht, und wenn zwei in Coil in the longitudinal direction corresponds, and if two in
Längsrichtung des Spulenkörpers einander anschließende Spulendrähte elektrisch leitend miteinander verbunden sind. Longitudinal direction of the bobbin adjacent coil wires are electrically connected to each other.
Die angesprochenen vorteilhaften Effekte der erfindungsgemäßen Elektrospule kommen immer dann besonders gut zur Geltung, wenn die Elektrospule zumindest zeitweise unterschiedlichen Temperaturen ausgesetzt sind, wobei bei Temperaturen von mehr als 150°C, insbesondere mehr als 200°C, die Vorteile gegenüber herkömmlichen Elektrospulen besonders groß sind. The mentioned advantageous effects of the electric coil according to the invention are always particularly effective if the electric coil are at least temporarily exposed to different temperatures, at temperatures of more than 150 ° C, in particular more than 200 ° C, the advantages over conventional electric coils are particularly large ,
Eine derartige erfindungsgemäße Elektrospule findet daher insbesondere als Bestandteil einer Kraftfahrtzeugspritzkomponente, insbesondere eines Such an electric coil according to the invention therefore finds particular use as part of a motor vehicle injection component, in particular one
Kraftstoffinjektors Verwendung, bei der der Kraftstoff! njektor bzw. dessen Elektrospule einerseits, beispielsweise bei einem Kaltstart, relativ tiefen Fuel injector use in which the fuel! Njektor or its electric coil on the one hand, for example, during a cold start, relatively deep
Temperaturen ausgesetzt ist, und andererseits während des Betriebs die angesprochenen hohen Temperaturen von bis zu über 200°C erreichen können. Grundsätzlich kann die erfindungsgemäße Elektrospule bei allen Anwendungen eingesetzt werden, bei denen eine besonders hohe Leistungsfähigkeit und/oder ein kleiner Bauraum für die Elektrospule erwünscht ist. Temperatures is exposed, and on the other hand, during operation can reach the mentioned high temperatures of up to about 200 ° C. In principle, the electric coil according to the invention can be used in all applications in which a particularly high performance and / or a small installation space for the electric coil is desired.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.
Diese zeigt in: This shows in:
Fig. 1 einen Längsschnitt durch eine Elektrospule, bei der in 1 shows a longitudinal section through an electric coil, in the in
Längsrichtung betrachtet zwei Spulendrahteinheiten nebeneinander angeordnet sind, eine perspektivische Darstellung eines in Form einer Rolle ausgebildeten Spulendrahtelements, Fig. 3 einen Querschnitt durch ein erstes erfindungsgemäßes Seen longitudinally two coil wire units are arranged side by side, a perspective view of a formed in the form of a coil wire element, 3 shows a cross section through a first invention
Spulendrahtelement  Coil wire element
Fig. 4 einen Querschnitt durch ein gegenüber Fig. 3 modifiziertes Fig. 4 shows a cross section through a comparison with FIG. 3 Modified
Spulendrahtelement und  Coil wire element and
Fig. 5 eine Darstellung des Widerstandsverlaufs unterschiedlicher Fig. 5 is a representation of the resistance curve different
Materialien über der Temperatur. Gleiche Elemente bzw. Elemente mit gleicher Funktion sind in den Figuren mit den gleichen Bezugsziffern versehen.  Materials above the temperature. The same elements or elements with the same function are provided in the figures with the same reference numerals.
In der Fig. 1 ist eine erfindungsgemäße Elektrospule 10 dargestellt, wie Sie beispielsweise als Bestandteil einer Kraftfahrzeugeinspritzkomponente in Form eines Kraftstoffinjektors dient. Insbesondere dient die Elektrospule 10 dabei der zumindest mittelbaren Betätigung eines Einspritzventilglieds (Düsennadel) in den Kraftstoff! njektor. In Fig. 1, an electric coil 10 according to the invention is shown, as used for example as part of a motor vehicle injection component in the form of a fuel injector. In particular, the electric coil 10 serves for the at least indirect actuation of an injection valve member (nozzle needle) into the fuel! njektor.
Die Elektrospule 10 umfasst einen aus Kunststoff bestehenden, im The electric coil 10 comprises a plastic, in the
Spritzgussverfahren hergestellten Spulenkörper 11 in Form einer Hülse mit zwei seitlich angeordneten, den Spulenkörper 11 in Längsrichtung begrenzenden, radial umlaufenden Flanschen 12, 13 und einer konzentrisch zur Längsachse 14 des Spulenkörpers 11 in diesem angeordneten Ausnehmung 15. Zwischen den beiden Flanschen 12, 13 bildet der Spulenkörper 11 eine insbesondere kreisförmig ausgebildete Umfangsfläche 16 zur Anordnung wenigstens einerInjection molding process produced bobbin 11 in the form of a sleeve with two laterally arranged, the bobbin 11 longitudinally delimiting, radially circumferential flanges 12, 13 and concentric with the longitudinal axis 14 of the bobbin 11 arranged in this recess 15. Between the two flanges 12, 13 forms the Bobbin 11 a particular circular peripheral surface 16 for the arrangement of at least one
Spulendrahteinheit 20 aus. Im dargestellten Ausführungsbeispiel sind in Coil wire unit 20 off. In the illustrated embodiment are in
Axialrichtung der Längsachse 14 betrachtet zwei Spulendrahteinheiten 20 auf dem Spulenkörper 11 vorgesehen, die elektrisch leitend miteinander verbunden sind (nicht dargestellt), indem ein Drahtende der einen Spulendrahteinheit 20 mit einem Drahtende der anderen Spulendrahteinheit 20 verbunden ist. Axial direction of the longitudinal axis 14 considered two coil wire units 20 provided on the bobbin 11, which are electrically conductively connected to each other (not shown) by a wire end of a coil wire unit 20 is connected to a wire end of the other coil wire unit 20.
Insbesondere beträgt die Breite b der beiden identisch ausgebildeten  In particular, the width b of the two identically formed
Spulendrahteinheiten 20 in etwa die Hälfte der Breite B des Spulenkörpers 11 zwischen den beiden Flanschen 12, 13, so dass der Bauraum zwischen den beiden Flanschen 12, 13 zumindest nahezu vollständig ausgefüllt ist. Wie anhand einer Zusammenschau der Fig. 2 bis 4 erkennbar ist, besteht der Spulendraht 25, 25a der Spulendrahteinheit 20, der in Form einer Vielzahl von Windungen auf dem Spulenkörper 11 aufgewickelt ist, aus zwei Coil wire units 20 in about half the width B of the bobbin 11 between the two flanges 12, 13, so that the space between the two flanges 12, 13 is at least almost completely filled. As can be seen from a combination of FIGS. 2 to 4, the coil wire 25, 25 a of the coil wire unit 20, which is wound in the form of a plurality of turns on the bobbin 11, consists of two
unterschiedlichen Materialen, aus Aluminium 21 sowie aus Graphen 22. Bei der Ausführungsform gemäß der Fig. 3 besteht der Spulendraht 25 mit einemdifferent materials, aluminum 21 and graphene 22. In the embodiment according to FIG. 3, the coil wire 25 is provided with a
Drahtkern 23, bestehend aus Aluminium 21 . In Stromleitungsrichtung, d.h. Wire core 23, consisting of aluminum 21st In the power line direction, i.
senkrecht zur Zeichenebene der Fig. 3, sind in dem Aluminium 21 Plättchen aus Graphen 22 angeordnet, wobei die Plättchen senkrecht zur Zeichenebene der Fig. 3 entweder alle miteinander unmittelbar in Form eines Bandes elektrisch leitend verbunden sind, oder aber mit Abständen zueinander angeordnet sind.perpendicular to the plane of Fig. 3, 21 plates of graphene 22 are arranged in the aluminum, wherein the platelets are perpendicular to the plane of Fig. 3 either all directly electrically connected in the form of a band, or arranged at intervals to each other.
Insbesondere ist die Verteilung des Graphens 22 innerhalb des Drahtkerns 23 bzw. des Aluminiums 21 zumindest im Wesentlichen homogen. In particular, the distribution of the graphene 22 within the wire core 23 or the aluminum 21 is at least substantially homogeneous.
Der einen rechteckigen Querschnitt der Breite b aufweisende Spulendraht 25 ist von einer insbesondere eine gleichmäßige Wanddicke a aufweisenden The coil wire 25 having a rectangular cross-section of the width b is of a particularly uniform wall thickness a
Isolationsschicht 26 über den gesamten Querschnitt des Spulendrahts 25 umgeben. Die Isolationsschicht 26 ist als Aluminium-Oxidschicht 27 ausgebildet und beispielsweise im Eloxalverfahren erzeugt. Insbesondere beträgt die Wanddicke a der Isolationsschicht 26 zwischen 1 μιη und 10μιη, vorzugsweise zwischen 2μιη und 5μιη, ganz besonders bevorzugt 4μηι. Ein derartig hergestellter Spulendraht 25 lässt sich entsprechend der Darstellung der Fig. 2 in Form eines aufgespulten Bandes 28 bevorraten bzw. maschinell verarbeiten.  Insulation layer 26 over the entire cross section of the coil wire 25 surrounded. The insulating layer 26 is formed as an aluminum oxide layer 27 and produced, for example, in the anodizing process. In particular, the wall thickness a of the insulating layer 26 is between 1 μιη and 10μιη, preferably between 2μιη and 5μιη, most preferably 4μηι. Such a manufactured coil wire 25 can be stored in accordance with the representation of FIG. 2 in the form of a wound-up belt 28 or processed by machine.
In der Fig. 4 ist ein gegenüber Fig. 3 modifizierter Spulendraht 25a dargestellt. Der Drahtkern 23 des Spulendrahts 25a besteht aus Aluminium 21 ohne 4, a comparison with FIG. 3 modified coil wire 25a is shown. The wire core 23 of the coil wire 25a is made of aluminum 21 without
Graphen 22. Das Graphen 22 ist als bandförmige Schicht auf der Oberfläche bzw. auf der Oberseite 29 des Drahtkerns 23 aufgebracht und mit diesem elektrisch leitend verbunden. Die Isolationsschicht 26 besteht ebenfalls aus einer Aluminium-Oxidschicht 27, die den Drahtkern 23 im Bereich außerhalb des Graphens 22 vollständig umgibt. Im Bereich des Graphens 22 reicht die  Graphene 22. The graphene 22 is applied as a band-shaped layer on the surface or on the upper side 29 of the wire core 23 and connected to it in an electrically conductive manner. The insulating layer 26 also consists of an aluminum oxide layer 27, which completely surrounds the wire core 23 in the area outside of the graphene 22. In the field of graphene 22 reaches the
Isolationsschicht 26 seitlich bis an das Graphen 22 heran, das Graphen 22 ist jedoch auf der dem Drahtkern 23 abgewandten Oberseite nicht von der  Insulation layer 26 side up to the graphene 22 zoom, but the graph 22 is not on the wire core 23 facing away from the top of the
Isolationsschicht 26 umgeben bzw. abgedeckt. Insulating layer 26 surrounded or covered.
Beim Bewickeln des Spulenkörpers 1 1 mittels des Spulendrahts 25a ist es wesentlich, dass mehrere Lagen des Spulendrahts 25a derart übereinander angeordnet bzw. aufgewickelt werden, dass auf das Graphen 22 einer radial unteren Schicht jeweils eine Isolationsschicht 26 einer oberhalb angeordneten Windung gewickelt wird. When winding the bobbin 1 1 by means of the coil wire 25a, it is essential that a plurality of layers of the coil wire 25a so one above the other can be arranged or wound, that on the graph 22 of a radially lower layer each an insulating layer 26 of a winding arranged above is wound.
In der Fig. 5 ist über der Temperatur T (x-Achse) der spezifische Widerstand Rs (Y-Achse) verschiedener Materialien dargestellt. Mit der Bezugsziffer 31 ist der Verlauf des spezifischen Wderstands Rs von Aluminium dargestellt, während die Bezugsziffer 32 den Verlauf des spezifischen Widerstand Rs von Kupfer verdeutlicht. Mit der Bezugsziffer 33 ist der spezifische Wderstand Rs der erfindungsgemäßen Materialkombination, bestehend aus Aluminium 21 und Graphen 22 dargestellt. Man erkennt, dass eine derartige Materialkombination bei steigender Temperatur einen nahezu konstanten bzw. lediglich leicht steigenden spezifischen Wderstand Rs aufweist, der hinsichtlich seines In FIG. 5, the specific resistance R s (Y-axis) of various materials is shown above the temperature T (x-axis). The reference numeral 31 shows the course of the specific resistance R s of aluminum, while the reference numeral 32 illustrates the course of the resistivity R s of copper. The reference number 33 shows the specific resistance R s of the material combination according to the invention, consisting of aluminum 21 and graphene 22. It can be seen that such a combination of materials has an almost constant or only slightly increasing specific resistance R s as the temperature rises, which with respect to its
Absolutbetrages in der Größenordnung von Kupfer bei relativ kleinen Absolute amount of the order of copper at relatively small
Temperaturen liegt. Temperatures is.
Die erfindungsgemäße Elektrospule 10 kann in vielfältiger Art und Weise abgewandelt bzw. modifiziert werden, ohne vom Erfindungsgedanken abzuweichen. Es ist beispielsweise denkbar, anstelle eines im Wesentlichen rechteckförmigen Querschnitts für den Spulendraht 25, 25a diesen Querschnitt auch quadratisch oder im Falle des im Aluminium 21 angeordneten Graphens 22 rund auszubilden. Auch sei nochmals darauf hingewiesen, dass der Einsatz der Erfindung nicht auf Elektrospulen 10 begrenzt sein soll, die als Bestandteil einer Kraftstoffeinspritzkomponente dienen. The electric coil 10 according to the invention can be modified or modified in many ways, without departing from the spirit of the invention. It is conceivable, for example, instead of a substantially rectangular cross-section for the coil wire 25, 25a to form this cross-section square or, in the case of the graphite 22 arranged in the aluminum 21, roundly. It should also be noted that the use of the invention should not be limited to electric coils 10, which serve as part of a fuel injection component.

Claims

Elektrospule (10), umfassend zumindest einen Spulenkörper (11) und einem den Spulenkörper (1 1) an einer Umfangsfläche (16) des Spulenkörpers (11) in Form wenigstens einer Windung umgebenen Spulendraht (25; 25a), wobei der Spulendraht (25; 25a) aus einem elektrisch leitenden Drahtkern (23) und einer den Drahtkern (23) zumindest bereichsweise umgebenden Electric coil (10), comprising at least one coil former (11) and a coil wire (25; 25a) surrounding the coil former (11) on a circumferential surface (16) of the coil former (11) in the form of at least one turn, wherein the coil wire (25; 25a) of an electrically conductive wire core (23) and at least partially surrounding the wire core (23)
Isolationsschicht (26) besteht, dadurch gekennzeichnet, dass der Drahtkern (23) aus Aluminium (21) und mit dem Aluminium (21) in elektrisch leitendem Kontakt angeordneten Graphen (22) besteht. Insulation layer (26), characterized in that the wire core (23) made of aluminum (21) and with the aluminum (21) arranged in electrically conductive contact Graphene (22).
Elektrospule nach Anspruch 1 , Electric coil according to claim 1,
dadurch gekennzeichnet, characterized,
dass das Graphen (22) zumindest im Wesentlichen homogen im Querschnitt des Drahtkerns (23) im Aluminium (21) verteilt und in Stromleitungsrichtung orientiert angeordnet ist. in that the graph (22) is distributed at least substantially homogeneously in the cross-section of the wire core (23) in the aluminum (21) and oriented in the direction of the power line.
Elektrospule nach Anspruch 1 , Electric coil according to claim 1,
dadurch gekennzeichnet, characterized,
dass das Graphen (22) als eine von dem Aluminium (21) separate und mit dem Aluminium (21) elektrisch leitend verbundene, in Stromrichtung vorzugsweise durchgehende Schicht, vorzugsweise an einer Oberseite (29) des Drahtkerns (23), ausgebildet ist. in that the graphene (22) is formed as a layer which is separate from the aluminum (21) and is electrically conductively connected to the aluminum (21), preferably in the direction of flow, preferably on an upper side (29) of the wire core (23).
Elektrospule nach einem der Ansprüche 1 bis 3, Electric coil according to one of claims 1 to 3,
dadurch gekennzeichnet, characterized,
dass die Isolationsschicht (26) eine Aluminium-Oxyidschicht (27) mit einer Dicke (a) zwischen 1 μηι und 10μηι, vorzugsweise zwischen 2μηι und 5μηι ist. the insulation layer (26) is an aluminum oxide layer (27) with a thickness (a) between 1 μm and 10 μm, preferably between 2 μm and 5 μm.
5. Elektrospule nach Anspruch 3 oder 4, 5. Electric coil according to claim 3 or 4,
dadurch gekennzeichnet,  characterized,
dass die Isolationsschicht (26) das Graphen (22) lediglich teilweise überdeckt.  the insulation layer (26) only partially covers the graph (22).
6. Elektrospule nach einem der Ansprüche 1 bis 5, 6. Electric coil according to one of claims 1 to 5,
dadurch gekennzeichnet,  characterized,
dass der Spulendraht (25; 25a) einen zumindest im Wesentlichen rechteckförmigen Querschnitt aufweist.  the coil wire (25; 25a) has an at least substantially rectangular cross-section.
7. Elektrospule nach Anspruch 6, 7. Electric coil according to claim 6,
dadurch gekennzeichnet,  characterized,
dass das Spulendraht (25; 25a) eine Breite (b) ausweist, die zumindest im Wesentlichen der axialen Breite (B) des Spulenkörpers (11) in dessen in that the coil wire (25; 25a) has a width (b) which is at least substantially equal to the axial width (B) of the coil former (11) in the latter
Längsrichtung entspricht. Longitudinal corresponds.
8. Elektrospule nach Anspruch 6, 8. Electric coil according to claim 6,
dadurch gekennzeichnet,  characterized,
dass das Spulendraht (25; 25a) eine Breite (b) ausweist, die zumindest im the coil wire (25; 25a) has a width (b) which, at least in the
Wesentlichen einem 1/n-fachen der Breite (B) des Spulenkörpers (11) in dessen Längsrichtung entspricht, und dass zwei in Längsrichtung des Spulenkörpers (11) einander anschließende Spulendrähte (25; 25a) elektrisch leitend miteinander verbunden sind. Substantially corresponds to a 1 / n times the width (B) of the bobbin (11) in its longitudinal direction, and that two in the longitudinal direction of the bobbin (11) adjoining coil wires (25; 25a) are electrically conductively connected to each other.
9. Verwendung einer Elektrospule (10) nach einem der Ansprüche 1 bis 9, bei der die Elektrospule (10) einer Temperatur von mehr als 150°C, insbesondere mehr als 200°C ausgesetzt ist. 10. Verwendung einer Elektrospule (10) nach Anspruch 9 als Bestandteil einer9. Use of an electric coil (10) according to any one of claims 1 to 9, wherein the electric coil (10) is exposed to a temperature of more than 150 ° C, in particular more than 200 ° C. 10. Use of an electric coil (10) according to claim 9 as part of a
Kraftfahrzeugeinspritzkomponente, insbesondere eines Kraftstoff! njektors. Automotive injection component, in particular a fuel! njektors.
EP14806274.8A 2013-12-19 2014-12-03 Electric solenoid and use of an electric solenoid Active EP3084781B1 (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016202071A1 (en) * 2016-02-11 2017-08-17 Siemens Aktiengesellschaft Electrical conductor for an electric machine with increased power-to-weight ratio and electrical component for the electric machine
DE102017205296A1 (en) * 2017-03-29 2018-10-04 Robert Bosch Gmbh Electrical conductor
DE102017210441A1 (en) * 2017-06-21 2018-12-27 Robert Bosch Gmbh Electromagnetically excitable coil
CN107726600B (en) * 2017-09-27 2020-10-02 青岛海尔智能技术研发有限公司 Magnetic energy water heater
CN110491619A (en) * 2019-09-04 2019-11-22 同济大学 A kind of magnetic-levitation train foil is around electromagnet

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU636691A1 (en) * 1977-04-26 1978-12-05 Предприятие П/Я А-1216 Inductance coil
ES2148642T3 (en) * 1995-08-25 2000-10-16 Denso Corp INCLINED WINDING ELECTROMAGNETIC COIL AND IGNITION COIL FOR INTERNAL COMBUSTION ENGINE USING THEM.
CN1196140C (en) * 2002-06-29 2005-04-06 太原理工大学 Transmission cable with core line of alumium-based composite carbon fiber material and its production process
DE102008034408A1 (en) * 2008-07-23 2010-01-28 Kendrion Binder Magnete Gmbh Electromagnetic device, has winding conductor formed from anodized aluminum, and control element adjustably arranged by electric current flowing in set of tape winders along longitudinal axis of control element
JP4631951B2 (en) * 2008-09-19 2011-02-16 パナソニック株式会社 Electrical connection means for washing machine between wound coil and copper wire
ATE537352T1 (en) * 2009-06-15 2011-12-15 Delphi Tech Holding Sarl FUEL INJECTOR
US8263843B2 (en) * 2009-11-06 2012-09-11 The Boeing Company Graphene nanoplatelet metal matrix
WO2013012507A1 (en) * 2011-07-21 2013-01-24 Ut-Battelle, Llc Graphene-coated coupling coil for ac resistance reduction
CN202307250U (en) * 2011-11-04 2012-07-04 江苏中超电缆股份有限公司 Grapheme-containing rubber insulation cable
US20130140058A1 (en) * 2011-12-05 2013-06-06 Ki II Kim Graphene electrical wire and a method for manufacturing thereof
CN103021502A (en) * 2012-12-25 2013-04-03 山东鑫汇铜材有限公司 Copper-clad aluminum conductor
CN103123830A (en) * 2013-03-14 2013-05-29 南京科孚纳米技术有限公司 Method for preparing graphene wire and cable
NL2011129C2 (en) * 2013-07-09 2015-01-12 Eco Logical Entpr B V COMPACT ELECTRICAL DEVICE AND ELECTRODYNAMIC LOUDSPEAKER, ELECTRIC MOTOR, SCREENER AND ADJUSTABLE COUPLING BASED ON THEM.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015090964A1 *

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