WO2015150136A1 - Electrically operated vehicle with winding device - Google Patents

Electrically operated vehicle with winding device Download PDF

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Publication number
WO2015150136A1
WO2015150136A1 PCT/EP2015/056073 EP2015056073W WO2015150136A1 WO 2015150136 A1 WO2015150136 A1 WO 2015150136A1 EP 2015056073 W EP2015056073 W EP 2015056073W WO 2015150136 A1 WO2015150136 A1 WO 2015150136A1
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WO
WIPO (PCT)
Prior art keywords
winding
winding device
vehicle
electrically operated
operated vehicle
Prior art date
Application number
PCT/EP2015/056073
Other languages
German (de)
French (fr)
Inventor
Manuel Blum
Thomas Komma
Monika POEBL
Original Assignee
Siemens Aktiengesellschaft
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Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2015150136A1 publication Critical patent/WO2015150136A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • 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
    • H01F27/2804—Printed windings
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the invention relates to an electrically operated vehicle having a winding device for receiving inductively transmitted energy for driving the vehicle.
  • Secondary windings for wireless inductive energy transmission systems are generally carried out with HF stranded wire.
  • HF stranded wire As a result, the losses due to current displacement can be significantly reduced.
  • the production is disadvantageously associated with a considerable manual effort.
  • Suitable HF strands have a relatively high diameter or height in the case of profiled strands.
  • the resulting total height of the secondary side is uncomfortably high.
  • the ferrite core and the winding must be isolated from each other. A thermal connection of the ferrite core to the housing, for example via the shield plate, for cooling is difficult.
  • the electrically operated vehicle comprises a winding device for receiving inductively transmitted energy for driving the vehicle, wherein the winding device in turn has a soft-magnetic core, in particular ferrite core, and at least one surrounding the soft magnetic core winding.
  • the winding in turn comprises a substantial part of planar conductor material.
  • the winding is not constructed by means of the known Hochfrequenzlitze, but with a largely flat conductor material.
  • the conductor material is therefore not built in its area of area as a collection of mutually insulated wires.
  • HF strand has the property of having low current displacement effects even with multidimensional stray field. However, this is not required in the proposed arrangement. Rather, it has been recognized that a planar winding arrangement allows a targeted utilization of this substantially one-dimensional leakage flux and thereby has only low current displacement effects. For this purpose, the soft-magnetic core is no longer wound with HF-strand, but rather with the essentially planar surface material.
  • a bobbin for receiving the winding is no longer necessary.
  • the structure according to the invention can be produced largely by machine.
  • the winding acts as a screen for field shaping.
  • the winding device is flatter overall than in known structures.
  • the sheet-like conductor material expediently forms one or more areas which are large in comparison to a strand and are continuous on one side of the soft-magnetic core, each of which forms at least 10% of the area-large of the soft-magnetic core.
  • the surfaces each make up at least 20% or even at least 50% of the areal size of the soft magnetic core. It is possible that several of the surfaces thus formed are electrically isolated from each other.
  • the width of the contiguous surfaces - compared to the narrow strands - at least for example 10%, in particular at least 25% of the total width of the winding.
  • width is meant the extent along an imaginary axis of the winding.
  • the winding device is configured to receive inductively offered electrical energy and, for example, to make it storable in a battery.
  • the winding device can additionally be configured to be able to offer electrical energy in turn.
  • the winding device is designed so that the energy transfer is bidirectionally possible.
  • a vehicle with the winding device can be used in so-called vehicle-to-grid systems in which the vehicle serves as a temporary energy store.
  • the conductor material is essentially copper.
  • the winding may comprise conductor material foil, for example copper foil.
  • the end face of the film advantageously provides the stray field with the least possible area for generating current displacement effects.
  • the copper thickness is preferably between 35 ⁇ and 400 ⁇ , for example, 70 ⁇ or 105 ⁇ .
  • the winding can be configured as a printed circuit board winding.
  • a multilayer printed circuit board covers the upper side of the core and another multilayer printed circuit board covers the underside of the core.
  • the connection between the boards can be done for example with wire or with post connectors.
  • the insulation of the core of the winding for example, even the board itself.
  • the winding device can be connected by its flat surface area to the housing. This advantageously results in good cooling of the winding.
  • Additional components such as compensation elements (capacitors or others) can be arranged on a circuit board. As a result, additional cables are advantageously unnecessary.
  • FIG. 1 shows schematically an electrically operated vehicle with a winding device for receiving inductively transmitted energy
  • Figure 2 shows an exemplary winding device
  • Figures 3 ... 6 a plan view of the winding device with
  • Figure 1 shows schematically and not to scale an electrically operated vehicle 1 with a winding device 10 for receiving inductively transmitted energy.
  • the further figures illustrate an exemplary embodiment of a winding device 10 according to the invention. They show different views of a printed circuit board winding.
  • the printed circuit board winding is double-layered and has three windings in each of the layers, ie it comprises 6 windings.
  • Other embodiments with more layers and more turns per layer are also conceivable, for example 12 turns can be achieved by means of three layers and four turns per layer.
  • 2 shows a cross section through the winding device 10.
  • the winding device 10 comprises a cuboid flat ferrite core 11.
  • the ferrite core 11 is arranged horizontally with respect to a vehicle in which the winding device 10 is installed, wherein the two large side surfaces of the ferrite core 11 pointing up and down.
  • a printed circuit board 12, 13 is fixedly connected to it.
  • the upper printed circuit board 12 comprises two copper layers lying one above the other, which are subdivided in such a way that three substantially rectangular copper regions 141... 143, 151... 153, which lie next to one another and are electrically insulated from one another, result.
  • the lower printed circuit board 13 is likewise constructed and likewise comprises six largely rectangular copper regions 161... 163, 171... 173 which are electrically insulated from one another.
  • a first, fourth, seventh and tenth copper region 141, 151, 161, 171 lie one above the other in a typical installation position in the vehicle.
  • the thickness of the copper layers is advantageously between 35 ⁇ and 400 ⁇ . In the present example, the thickness of the copper layers should be 105 ⁇ .
  • the copper regions 141 ... 143, 151 ... 153, 161 ... 163, 171 ... 173 comprise lateral projections. The projections are interconnected with connectors in such a way that a flow analogous to that in a winding results for the electric current. In the example given, the current, starting from a first electrical connection realized on a first projection 1511, is first led into the inner copper regions 151... 153, 161... 163 and subsequently into the outer copper regions 171. .173, 141 ... 143 led to a second connection.
  • the projections are left and right-sided and lead out of an imaginary rectangle that surrounds the copper areas.
  • the left and right sides refer to the side areas from the perspective of an imaginary axis of the winding. Left and right side are assigned arbitrarily. It is understood that the winding can also be mirrored, for example, as long as attention is paid to the current flow direction.
  • the side of the first cantilever becomes
  • the further current flow happens analogous to the previously shown.
  • the current is conducted via a sixth protrusion 1631 to a seventh protrusion 1431 of the third copper region 143.
  • a return of the current takes place while maintaining the winding direction to the tenth copper region 171, where the second connection is arranged on an eighth projection 1711.
  • post connectors were used as a connection between the overlying cantilevers.
  • wire connections can also be used.

Abstract

The invention relates to an electrically drive vehicle having a winding device for receiving inductively transmitted energy for driving the vehicle, in which the winding device has a ferrite core and at least one winding surrounding said ferrite core, the winding including a substantially flat conductive material.

Description

Beschreibung description
Elektrisch betriebenes Fahrzeug mit Wicklungseinrichtung Die Erfindung betrifft ein elektrisch betriebenes Fahrzeug mit einer Wicklungseinrichtung zur Aufnahme von induktiv übertragener Energie für den Antrieb des Fahrzeugs . Electrically operated vehicle with winding device The invention relates to an electrically operated vehicle having a winding device for receiving inductively transmitted energy for driving the vehicle.
Sekundärwicklungen für drahtlose induktive Energieübertra- gungssysteme, beispielsweise zum Laden von elektrisch betriebenen Fahrzeugen, werden in der Regel mit HF-Litze ausgeführt. Dadurch lassen sich die Verluste durch Stromverdrängung deutlich reduzieren. Die Herstellung ist nachteilig mit einem erheblichen manuellen Aufwand verbunden. Geeignete HF-Litzen besitzen ein relativ hohen Durchmesser bzw. Höhe im Fall von Profillitze. Die sich dadurch ergebende Gesamthöhe der Sekundärseite ist unangenehm hoch. Weiterhin müssen der Ferritkern und die Wicklung voneinander isoliert werden. Eine thermische Anbindung des Ferritkerns an das Gehäuse, beispielsweise über das Schirmblech, zur Kühlung ist nur schwer möglich. Secondary windings for wireless inductive energy transmission systems, for example for charging electrically powered vehicles, are generally carried out with HF stranded wire. As a result, the losses due to current displacement can be significantly reduced. The production is disadvantageously associated with a considerable manual effort. Suitable HF strands have a relatively high diameter or height in the case of profiled strands. The resulting total height of the secondary side is uncomfortably high. Furthermore, the ferrite core and the winding must be isolated from each other. A thermal connection of the ferrite core to the housing, for example via the shield plate, for cooling is difficult.
Es ist Aufgabe der vorliegenden Erfindung, ein elektrisch be- triebenes Fahrzeug mit einer Wicklungseinrichtung zur Aufnahme von induktiv übertragener Energie für den Antrieb des Fahrzeugs anzugeben, bei dem die eingangs genannten Nachteile vermindert sind. Diese Aufgabe wird durch ein elektrisch betriebenes Fahrzeug mit den Merkmalen von Anspruch 1 gelöst. Die Unteransprüche betreffen vorteilhafte Ausgestaltungen und Weiterbildungen des Fahrzeugs. Das erfindungsgemäße elektrisch betriebene Fahrzeug umfasst eine Wicklungseinrichtung zur Aufnahme von induktiv übertragener Energie für den Antrieb des Fahrzeugs, wobei die Wicklungseinrichtung ihrerseits einen weichmagnetischen Kern, insbesondere Ferritkern, und wenigstens eine den weichmagnetischen Kern umgebende Wicklung umfasst. Die Wicklung wiederum umfasst ein in Wesentlichen Teilen flächiges Leitermaterial . It is an object of the present invention to provide an electrically operated vehicle with a winding device for receiving inductively transmitted energy for driving the vehicle, in which the disadvantages mentioned above are reduced. This object is achieved by an electrically operated vehicle having the features of claim 1. The subclaims relate to advantageous refinements and developments of the vehicle. The electrically operated vehicle according to the invention comprises a winding device for receiving inductively transmitted energy for driving the vehicle, wherein the winding device in turn has a soft-magnetic core, in particular ferrite core, and at least one surrounding the soft magnetic core winding. The winding in turn comprises a substantial part of planar conductor material.
Mit anderen Worten wird die Wicklung nicht mittels der bekannten Hochfrequenzlitze aufgebaut, sondern mit einem weitgehend flächigen Leitermaterial. Das Leitermaterial ist also in seinem flächigen Bereich nicht als Sammlung gegeneinander isolierter Drähte aufgebaut. Für die Erfindung wurde erkannt, dass sich durch Anwesenheit eines entsprechend großen Metall - schirms im elektrisch betriebenen Fahrzeug ein Streufeld an der fahrzeugseitigen Spule, d.h. der Wicklungseinrichtung ausbildet, welches nahezu nur eine horizontale Komponente be- sitzt. In other words, the winding is not constructed by means of the known Hochfrequenzlitze, but with a largely flat conductor material. The conductor material is therefore not built in its area of area as a collection of mutually insulated wires. For the invention, it was recognized that the presence of a correspondingly large metal screen in the electrically operated vehicle causes a stray field on the vehicle-side coil, i. the winding device forms, which has almost only a horizontal component.
HF-Litze besitzt die Eigenschaft, geringe Stromverdrängungs- effekte auch bei mehrdimensionalem Streufeld aufzuweisen. Dies wird bei der vorgeschlagenen Anordnung jedoch nicht be- nötigt. Es wurde vielmehr erkannt, dass eine planare Wicklungsanordnung eine gezielte Ausnutzung dieses im Wesentlichen eindimensionalen Streuflusses ermöglicht und dabei nur geringe Stromverdrängungseffekte aufweist. Hierfür wird der weichmagnetische Kern nicht mehr mit HF-Litze bewickelt, son- dern mit dem in Wesentlichen Teilen flächigen Leitermaterial. HF strand has the property of having low current displacement effects even with multidimensional stray field. However, this is not required in the proposed arrangement. Rather, it has been recognized that a planar winding arrangement allows a targeted utilization of this substantially one-dimensional leakage flux and thereby has only low current displacement effects. For this purpose, the soft-magnetic core is no longer wound with HF-strand, but rather with the essentially planar surface material.
Weiterhin ergibt sich als Vorteil, dass ein Spulenkörper zur Aufnahme der Wicklung nicht mehr notwendig ist. Zusätzlich ist der Aufbau gemäß der Erfindung weitgehend maschinell her- stellbar. Schließlich wirkt die Wicklung als Schirm zur Feldformung . Furthermore, it is advantageous that a bobbin for receiving the winding is no longer necessary. In addition, the structure according to the invention can be produced largely by machine. Finally, the winding acts as a screen for field shaping.
Besonders von Vorteil ist bei dem erfindungsgemäßen Aufbau, dass die Wicklungseinrichtung insgesamt flacher wird als bei bekannten Aufbauten. Gerade bei der Anwendung im elektrisch betriebenen Fahrzeug ist die Bauhöhe von besonderem Interesse . Das flächige Leitermaterial bildet dabei zweckmäßig eine oder mehrere im Vergleich zu einer Litze große und auf jeweils einer Seite des weichmagnetischen Kerns zusammenhängende Flächen, die jeweils beispielsweise wenigstens 10% der Flächen- große des weichmagnetischen Kerns ausmachen. Insbesondere machen die Flächen jeweils wenigstens 20% oder sogar wenigstens 50 % der Flächengröße des weichmagnetischen Kerns aus. Dabei ist es möglich, dass mehrere der so gebildeten Flächen elektrische voneinander isoliert übereinander liegen. Particularly advantageous in the structure according to the invention that the winding device is flatter overall than in known structures. Especially when used in electrically powered vehicles, the height of particular interest. The sheet-like conductor material expediently forms one or more areas which are large in comparison to a strand and are continuous on one side of the soft-magnetic core, each of which forms at least 10% of the area-large of the soft-magnetic core. In particular, the surfaces each make up at least 20% or even at least 50% of the areal size of the soft magnetic core. It is possible that several of the surfaces thus formed are electrically isolated from each other.
Mit anderen Worten beträgt die Breite der zusammenhängenden Flächen - im Vergleich zu den schmalen Litzen - wenigstens beispielsweise 10%, insbesondere wenigstens 25% der gesamten Breite der Wicklung. Mit Breite ist dabei die Ausdehnung ent- lang einer gedachten Achse der Wicklung gemeint. Beispielsweise könnte die Ausdehnung einer, insbesondere aller Flächen jeweils wenigstens 5 cm x 10 cm bei einer Dicke von 70 μπι betragen . Die Wicklungseinrichtung ist ausgestaltet, induktiv angebotene elektrische Energie aufzunehmen und beispielsweise in einer Batterie zu speicherbar zu machen. Die Wicklungseinrichtung kann zusätzlich ausgestaltet sein, elektrische Energie auch ihrerseits anbieten zu können. Mit anderen Worten ist die Wicklungseinrichtung so gestaltet, dass die Energieübertragung bidirektional möglich ist. So kann beispielsweise ein Fahrzeug mit der Wicklungseinrichtung in bei sog. Vehicle-to- Grid-Systemen eingesetzt werden, in denen das Fahrzeug als temporärer Energiespeicher dient . In other words, the width of the contiguous surfaces - compared to the narrow strands - at least for example 10%, in particular at least 25% of the total width of the winding. By width is meant the extent along an imaginary axis of the winding. For example, the extent of one, in particular of all surfaces in each case at least 5 cm x 10 cm at a thickness of 70 μπι amount. The winding device is configured to receive inductively offered electrical energy and, for example, to make it storable in a battery. The winding device can additionally be configured to be able to offer electrical energy in turn. In other words, the winding device is designed so that the energy transfer is bidirectionally possible. Thus, for example, a vehicle with the winding device can be used in so-called vehicle-to-grid systems in which the vehicle serves as a temporary energy store.
Ausgestaltungen und Weiterbildungen der Erfindung umfassen: Embodiments and developments of the invention include:
- Zweckmäßig ist das Leitermaterial im Wesentlichen Kupfer. - Die Wicklung kann Leitermaterialfolie umfassen, beispielsweise Kupferfolie. Die Stirnseite der Folie bietet dem Streufeld vorteilhaft die geringstmögliche Fläche zum Erzeugen von Stromverdrängungseffekten. In Abhängigkeit von Stromform, Frequenz und Anzahl der Lagen der Leitermaterialfolie (in senkrechter Richtung) gibt es ein Verlustleistungsminimum in Abhängigkeit von der Leiterdicke. Im vorgesehenen Anwendungsfall beträgt die Kupferdicke bevorzugt zwischen 35 μπι und 400 μπι, beispielsweise 70 μπι oder 105 μπι. - Suitably, the conductor material is essentially copper. The winding may comprise conductor material foil, for example copper foil. The end face of the film advantageously provides the stray field with the least possible area for generating current displacement effects. In dependence of Current shape, frequency and number of layers of the conductor material film (in the vertical direction) there is a power loss minimum depending on the conductor thickness. In the intended application, the copper thickness is preferably between 35 μπι and 400 μπι, for example, 70 μπι or 105 μπι.
- Die Wicklung kann als Leiterplattenwicklung ausgestaltet sein. Dabei bedeckt beispielsweise eine mehrlagige Leiter- platte die Kernoberseite und eine weitere mehrlagige Leiterplatte die Kernunterseite. Die Verbindung zwischen den Platinen kann beispielsweise mit Draht oder mit Pfostensteckverbindern erfolgen. Vorteilhaft ergibt sich die Isolation des Kerns von der Wicklung beispielsweise schon die Platine selbst. - The winding can be configured as a printed circuit board winding. In this case, for example, a multilayer printed circuit board covers the upper side of the core and another multilayer printed circuit board covers the underside of the core. The connection between the boards can be done for example with wire or with post connectors. Advantageously, the insulation of the core of the winding, for example, even the board itself.
- Die Wicklungseinrichtung kann bedingt durch ihren flächigen Aufbau flächig an das Gehäuse angebunden werden. Dadurch ergibt sich vorteilhaft eine gute Kühlung der Wicklung. - The winding device can be connected by its flat surface area to the housing. This advantageously results in good cooling of the winding.
- Zusätzliche Bauelemente wie beispielsweise Kompensations- elemente (Kondensatoren oder andere) können mit auf einer Platine angeordnet werden. Dadurch werden vorteilhaft zusätzlich Kabel unnötig. - Additional components such as compensation elements (capacitors or others) can be arranged on a circuit board. As a result, additional cables are advantageously unnecessary.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Dabei zeigen Figur 1 schematisch ein elektrisch betriebenes Fahrzeug mit einer Wicklungseinrichtung zur Aufnahme induktiv übertragener Energie, Further advantages, features and details of the invention are explained below with reference to the drawing. 1 shows schematically an electrically operated vehicle with a winding device for receiving inductively transmitted energy,
Figur 2 eine beispielhafte Wicklungseinrichtung mit Figure 2 shows an exemplary winding device with
Leiterplattenwicklung im Längsschnitt,  PCB winding in longitudinal section,
Figuren 3...6 eine Aufsicht auf die Wicklungseinrichtung mit Figures 3 ... 6 a plan view of the winding device with
Details zu Schichten der Leiterplattenwicklung. Figur 1 zeigt schematisch und nicht maßstabsgetreu ein elektrisch betriebenes Fahrzeug 1 mit einer Wicklungseinrichtung 10 zur Aufnahme induktiv übertragener Energie. Die weiteren Figuren verdeutlichen ein Ausführungsbeispiel für eine Wicklungseinrichtung 10 gemäß der Erfindung. Sie zeigen dabei verschiedene Ansichten einer Leiterplattenwicklung. Die Leiterplattenwicklung ist zweilagig und mit drei Windungen in jeder der Lagen ausgeführt, umfasst also 6 Win- düngen. Andere Ausführungsformen mit mehr Lagen und mehr Windungen pro Lage sind ebenfalls denkbar, beispielsweise können 12 Windungen mittels dreier Lagen und vier Windungen pro Lage erzielt werden. Die Figur 2 zeigt einen Querschnitt durch die Wicklungseinrichtung 10. Die Wicklungseinrichtung 10 umfasst einen quaderförmigen flachen Ferritkern 11. Der Ferritkern 11 ist im Bezug zu einem Fahrzeug, in das die Wicklungseinrichtung 10 eingebaut ist, horizontal angeordnet, wobei die beiden großen Seitenflächen des Ferritkerns 11 nach oben und unten weisen. Details about layers of the PCB winding. Figure 1 shows schematically and not to scale an electrically operated vehicle 1 with a winding device 10 for receiving inductively transmitted energy. The further figures illustrate an exemplary embodiment of a winding device 10 according to the invention. They show different views of a printed circuit board winding. The printed circuit board winding is double-layered and has three windings in each of the layers, ie it comprises 6 windings. Other embodiments with more layers and more turns per layer are also conceivable, for example 12 turns can be achieved by means of three layers and four turns per layer. 2 shows a cross section through the winding device 10. The winding device 10 comprises a cuboid flat ferrite core 11. The ferrite core 11 is arranged horizontally with respect to a vehicle in which the winding device 10 is installed, wherein the two large side surfaces of the ferrite core 11 pointing up and down.
Auf der Oberseite und der Unterseite des Ferritkerns ist fest mit diesem verbunden jeweils eine Leiterplatte 12, 13 angeordnet. Die obere Leiterplatte 12 umfasst zwei übereinander- liegende nahezu durchgängige Kupferschichten, die so unterteilt sind, dass sich jeweils drei weitgehend rechteckförmi- ge, nebeneinander liegende und elektrisch voneinander isolierte Kupferbereiche 141...143, 151...153 ergeben. Die untere Leiterplatte 13 ist gleichermaßen aufgebaut und umfasst eben- falls sechs weitgehend rechteckförmige und elektrisch voneinander isolierte Kupferbereiche 161...163, 171...173. On the upper side and the underside of the ferrite core, a printed circuit board 12, 13 is fixedly connected to it. The upper printed circuit board 12 comprises two copper layers lying one above the other, which are subdivided in such a way that three substantially rectangular copper regions 141... 143, 151... 153, which lie next to one another and are electrically insulated from one another, result. The lower printed circuit board 13 is likewise constructed and likewise comprises six largely rectangular copper regions 161... 163, 171... 173 which are electrically insulated from one another.
Ein erster, vierter, siebter und zehnter Kupferbereich 141, 151, 161, 171 liegen dabei im gegebenen Beispiel bei typi- scher Einbaulage im Fahrzeug übereinander. Das gleiche gilt für einen zweiten, fünften, achten und elften Kupferbereich 142, 152, 162, 172 und einen dritten, sechsten, neunten und zwölften Kupferbereich 143, 153, 163, 173. Es ist nicht notwendig, dass die Kupferbereiche übereinander liegen. In anderen Ausführungsformen sind die Kupferbereiche zueinander versetzt angeordnet. In the example given, a first, fourth, seventh and tenth copper region 141, 151, 161, 171 lie one above the other in a typical installation position in the vehicle. The same applies to a second, fifth, eighth and eleventh copper region 142, 152, 162, 172 and a third, sixth, ninth and twelfth copper region 143, 153, 163, 173. It is not necessary that the copper areas are superimposed. In other embodiments, the copper regions are arranged offset to one another.
Die Dicke der Kupferschichten beträgt zweckmäßig zwischen 35 μπι und 400 μπι. Im gegenwärtigen Beispiel soll die Dicke der Kupferschichten 105 μπι betragen. Die Kupferbereiche 141...143, 151...153, 161...163, 171...173 umfassen dabei laterale Auskragungen. Die Auskragungen sind mit Steckverbindern so untereinander verbunden, dass sich für den elektrischen Strom ein Fluss analog dem in einer Wicklung ergibt. Dabei wird im gegebenen Beispiel der Strom ausgehend von einem ersten elektrischen Anschluss, der auf einer ersten Auskragung 1511 realisiert ist, zuerst in den inneren Kupferbereichen 151...153, 161...163 geführt und darauf folgend in den äußeren Kupferbereichen 171...173, 141...143 zu einem zweiten Anschluss geführt. The thickness of the copper layers is advantageously between 35 μπι and 400 μπι. In the present example, the thickness of the copper layers should be 105 μπι. The copper regions 141 ... 143, 151 ... 153, 161 ... 163, 171 ... 173 comprise lateral projections. The projections are interconnected with connectors in such a way that a flow analogous to that in a winding results for the electric current. In the example given, the current, starting from a first electrical connection realized on a first projection 1511, is first led into the inner copper regions 151... 153, 161... 163 and subsequently into the outer copper regions 171. .173, 141 ... 143 led to a second connection.
Die Auskragungen sind im vorliegenden Beispiel links- und rechtsseitig ausgeführt und führen aus einem gedachten Rechteck, das die Kupferbereiche umhüllt, heraus. Dabei bezeichnen links- und rechtsseitig die seitlichen Bereiche aus Sicht ei- ner gedachten Achse der Wicklung. Linke und rechte Seite sind dabei willkürlich zugeordnet. Es versteht sich, dass die Wicklung auch beispielsweise gespiegelt ausführbar ist, solange auf die Stromflussrichtung geachtet wird. Im vorliegenden Beispiel wird die Seite der ersten AuskragungIn the present example, the projections are left and right-sided and lead out of an imaginary rectangle that surrounds the copper areas. The left and right sides refer to the side areas from the perspective of an imaginary axis of the winding. Left and right side are assigned arbitrarily. It is understood that the winding can also be mirrored, for example, as long as attention is paid to the current flow direction. In the present example, the side of the first cantilever becomes
1511 als rechte Seite betrachtet. Dann ist es zweckmäßig, wenn der Strom innerhalb des vierten Kupferbereichs 151 zur linken Seite geführt wird, wo dann eine zweite Auskragung1511 considered as right side. Then it is expedient if the current is conducted within the fourth copper region 151 to the left side, where then a second projection
1512 vorhanden ist. Diese ist durch einen Steckverbinder mit einer dritten Auskragung 1611 des siebten Kupferbereichs 161 verbunden . Dort wird der Strom wieder zur rechten Seite geleitet und dort in eine vierte Auskragung 1612. Diese ist per Steckverbinder verbunden mit einer fünften Auskragung 1521 des fünften Kupferbereichs 152. 1512 is present. This is connected by a connector to a third projection 1611 of the seventh copper region 161. There, the current is again conducted to the right side and there in a fourth projection 1612. This is connected by a connector with a fifth projection 1521 of the fifth copper portion 152th
Die weitere Stromführung passiert analog zu der bisher gezeigten. Im neunten Kupferbereich 163 wird der Strom über eine sechste Auskragung 1631 zu einer siebten Auskragung 1431 des dritten Kupferbereichs 143 geleitet. Dort findet über analog gestaltete Auskragungen eine Rückleitung des Stroms bei Beibehaltung der Windungsrichtung zum zehnten Kupferbereich 171 statt, wo der zweite Anschluss auf einer achten Auskragung 1711 angeordnet ist. The further current flow happens analogous to the previously shown. In the ninth copper region 163, the current is conducted via a sixth protrusion 1631 to a seventh protrusion 1431 of the third copper region 143. There, via analogously configured projections, a return of the current takes place while maintaining the winding direction to the tenth copper region 171, where the second connection is arranged on an eighth projection 1711.
Im vorliegenden Beispiel wurden Pfostensteckverbinder als Verbindung zwischen den übereinanderliegenden Auskragungen verwendet. Alternativ können auch Drahtverbindungen eingesetzt werden. In the present example, post connectors were used as a connection between the overlying cantilevers. Alternatively, wire connections can also be used.

Claims

Patentansprüche claims
1. Elektrisch betriebenes Fahrzeug (1) mit einer Wicklungseinrichtung (10) zur Aufnahme von induktiv übertragener Ener- gie für den Antrieb des Fahrzeugs (1) , bei dem die Wicklungseinrichtung (10) umfasst: 1. Electrically operated vehicle (1) with a winding device (10) for receiving inductively transmitted energy for driving the vehicle (1), in which the winding device (10) comprises:
- einen weichmagnetischen Kern (11) ,  a soft magnetic core (11),
- wenigstens eine den weichmagnetischen Kern (11) umgebende Wicklung,  at least one winding surrounding the soft-magnetic core (11),
dadurch gekennzeichnet, dass die Wicklung ein in Wesentlichen Teilen flächiges Leitermaterial (141...143, 151...153, 161...163, 171...173) umfasst. characterized in that the winding comprises a substantially planar sheet material (141 ... 143, 151 ... 153, 161 ... 163, 171 ... 173).
2. Elektrisch betriebenes Fahrzeug (1) gemäß Anspruch 1, bei dem die Wicklung Leitermaterialfolie umfasst. 2. Electrically powered vehicle (1) according to claim 1, wherein the winding comprises conductor material foil.
3. Elektrisch betriebenes Fahrzeug (1) gemäß Anspruch 1, bei dem die Wicklung als Leiterplattenwicklung ausgestaltet ist. 3. Electrically operated vehicle (1) according to claim 1, wherein the winding is designed as a printed circuit board winding.
4. Elektrisch betriebenes Fahrzeug (1) gemäß Anspruch 3, bei dem die Leiterplattenwicklung eine Leiterplatte (12, 13) mit einer Mehrzahl von Leitermaterialschichten (141...143, 151...153, 161...163, 171...173) umfasst. 4. Electrically powered vehicle (1) according to claim 3, wherein the printed circuit board winding, a printed circuit board (12, 13) with a plurality of conductor material layers (141 ... 143, 151 ... 153, 161 ... 163, 171 .. .173).
5. Elektrisch betriebenes Fahrzeug (1) gemäß Anspruch 4, bei dem jeweils wenigstens eine der Leiterplatten (12, 13) ober- und unterseitig am weichmagnetischen Kern (11) angeordnet ist . 5. Electrically operated vehicle (1) according to claim 4, wherein in each case at least one of the printed circuit boards (12, 13) above and below the soft magnetic core (11) is arranged.
6. Elektrisch betriebenes Fahrzeug (1) gemäß einem der vorangehenden Ansprüche, bei dem die Dicke des flächigen Leitermaterials (141...143, 151...153, 161...163, 171...173) zwischen 35 um und 400 \im beträgt. 6. Electrically operated vehicle (1) according to one of the preceding claims, wherein the thickness of the sheet-like conductor material (141 ... 143, 151 ... 153, 161 ... 163, 171 ... 173) between 35 and 400 \ im amounts.
7. Elektrisch betriebenes Fahrzeug (1) gemäß einem der Ansprüche 3 bis 6, bei dem Verbindungen zwischen den Leitermaterialschichten (141...143, 151...153, 161...163, 171...173) durch Pfostensteckverbinder hergestellt sind. 7. Electrically operated vehicle (1) according to one of claims 3 to 6, wherein the connections between the conductor material layers (141 ... 143, 151 ... 153, 161 ... 163, 171 ... 173) made by post connectors are.
PCT/EP2015/056073 2014-03-31 2015-03-23 Electrically operated vehicle with winding device WO2015150136A1 (en)

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Citations (3)

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JP2010073976A (en) * 2008-09-19 2010-04-02 Yazaki Corp Communication coil structure of wireless power transmission device
US20120025602A1 (en) * 2009-02-05 2012-02-02 John Talbot Boys Inductive power transfer apparatus
EP2030301B1 (en) * 2006-05-30 2013-07-17 SEW-EURODRIVE GmbH & Co. KG Contactless energy transmission system

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DE102009055857A1 (en) * 2009-11-26 2011-06-16 Osram Gesellschaft mit beschränkter Haftung Method for contacting a printed circuit board with a ribbon cable and printed circuit board
DE102012025785B3 (en) * 2011-11-24 2020-01-09 Avl Software And Functions Gmbh Device for contactless energy transmission, printed circuit board with a primary coil arrangement and a charging station

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Publication number Priority date Publication date Assignee Title
EP2030301B1 (en) * 2006-05-30 2013-07-17 SEW-EURODRIVE GmbH & Co. KG Contactless energy transmission system
JP2010073976A (en) * 2008-09-19 2010-04-02 Yazaki Corp Communication coil structure of wireless power transmission device
US20120025602A1 (en) * 2009-02-05 2012-02-02 John Talbot Boys Inductive power transfer apparatus

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