EP1606869A1 - Transmitter head and a system for contactless energy transmission - Google Patents

Transmitter head and a system for contactless energy transmission

Info

Publication number
EP1606869A1
EP1606869A1 EP04713037A EP04713037A EP1606869A1 EP 1606869 A1 EP1606869 A1 EP 1606869A1 EP 04713037 A EP04713037 A EP 04713037A EP 04713037 A EP04713037 A EP 04713037A EP 1606869 A1 EP1606869 A1 EP 1606869A1
Authority
EP
European Patent Office
Prior art keywords
transmitter head
head according
arrangement
ferrite core
energy transmission
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
EP04713037A
Other languages
German (de)
French (fr)
Other versions
EP1606869B1 (en
Inventor
Josef Schmidt
Günter Becker
Leobald Podbielski
Martin NÜRGE
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
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 SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP1606869A1 publication Critical patent/EP1606869A1/en
Application granted granted Critical
Publication of EP1606869B1 publication Critical patent/EP1606869B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
    • 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
    • H01F2038/143—Inductive couplings for signals

Definitions

  • the invention relates to a transmitter head and a system for contactless energy transmission.
  • DE 100 53 373 A1 discloses a device for contactless energy transmission.
  • a transmitter head is described which enables inductive energy transmission and has a number of turns.
  • a system for non-contact energy transmission is known, the route consisting of a stationary center conductor and aluminum profile as a return line.
  • the center conductor is surrounded by a U-shaped core of the transmitter head which is movable along the center conductor.
  • a winding is provided on the U-shaped core.
  • the transmitter head requires a large volume.
  • WO 92/17929 is also a system for contactless energy transmission, the transmission path consisting of a forward and a return line in the form of
  • the transducer head which has an E-shaped core and a winding arranged on the middle leg of the E-shaped core, also requires a large structural volume.
  • the invention is therefore based on the object of developing a system for contactless energy transmission in such a way that a smaller construction volume is required in a cost-effective manner.
  • the object is achieved in the transmitter head according to the features in claim 1 or 2 and in the system according to the features specified in claim 12.
  • Essential features of the invention in the transmitter head are that the transmitter head for a system for contactless energy transmission comprises a carrier which is connected to at least one ferrite core, the ferrite core being at least partially E-shaped and the flat winding being arranged around one leg of the E. is.
  • the transmitter head for an electrical energy transmission device is designed with a primary conductor arrangement made up of at least two primary conductors running parallel to one another and at least one electromagnetically coupled secondary winding arrangement, which is mechanically separated from the primary conductor arrangement and can be moved in the longitudinal direction thereof, the secondary winding arrangement having at least one secondary coil that acts as Flat winding is formed and which lies in a plane which is arranged parallel to the plane receiving the primary conductor arrangement, the transmitter head comprising a carrier which is connected to at least one ferrite core, the ferrite core being at least partially E-shaped and the flat winding around a leg of the E-shaped ferrite core is provided around.
  • the advantage here is that the transmitter head is very flat, inexpensive and takes up a small amount of space.
  • the efficiency in energy transmission is much higher, since the E-shaped design guides the field lines in such a way that fewer stray fields are created and the majority of the field lines generated by the primary lines are led through the ferrite core with the legs of the E.
  • the primary conductors are designed as line conductors or the primary conductors are designed as flat conductors, the surface normal of which is perpendicular to the plane receiving the secondary winding arrangement.
  • the secondary winding arrangement is arranged on the underside of the floor of a vehicle.
  • the advantage here is that a rail system can be used as well as a railless system.
  • the secondary winding arrangement is embedded in a casting compound.
  • the advantage here is that a high degree of protection can be achieved.
  • the primary conductor arrangement is arranged in a stationary manner in the area of a route close to the surface. The advantage here is that a high degree of efficiency in energy transmission can be achieved.
  • Secondary conductor arrangement is at least partially formed from stranded material.
  • the advantage here is that the skin effect can be reduced.
  • the flat winding is designed as a conductor track on a single or multi-layer circuit board.
  • the circuit board is also provided with electronic components.
  • the advantage here is that the number of components can be reduced, in particular the number of means for electrical and / or mechanical connection can be reduced.
  • the circuit board is connected to a housing part comprising a cooling device.
  • the cooling device has cooling fins and / or cooling fingers. The advantage here is that the heat can be passed on from the housing part to the cooling device.
  • Essential features of the invention in the system for contactless energy transmission with a transmitter head are that two line conductors are laid in the floor at a mutual distance A, the distance of the transmitter head from the floor between 0.05 * A and 0 , 2 * A is.
  • the advantage here is that large capacities can be transferred with a particularly small construction volume.
  • circuit board 15 31 ferrite core
  • FIG. 1a A transmitter head according to the invention is shown in FIG. 1a, an enlarged section of the left end region being shown in FIG. 1b. It is flat and requires a small volume.
  • ferrite cores 2 are applied and connected to the carrier 1, in particular as an adhesive connection or as a releasable connection, such as a screw connection or the like.
  • a multi-layer circuit board with layers (3, 4, 5) is provided on the ferrite cores 2, which have copper conductor tracks designed as flat windings and are thus designed on the circuit board.
  • a single flat spiral winding is provided as the conductor track of a single-layer circuit board, although less electrical power can then be transmitted.
  • a multilayer board (3, 4, 5) which has a spiral winding in several planes.
  • the conduction of the current does not only run in a single spiral-shaped respective level, but the line alternates several times between the levels to reduce the skin effect.
  • a change to a next level of the circuit board advantageously takes place, a short conductor track section is run through again there and then another switch is made.
  • a quasi-twisted current conduction is created, which corresponds in principle to a stranded wire, that is to say a multiple bundle of mutually insulated power lines. The winding thus created is thus quasi-twisted.
  • the circuit board 3 also carries electronic components 23 and has the necessary conductor tracks.
  • the circuit board 3 and the ferrite cores 4 are connected to a housing part 21 which also has cooling fins 22 for heat dissipation.
  • a housing part 21 which also has cooling fins 22 for heat dissipation.
  • FIG. 3 Another exemplary embodiment according to the invention is shown in FIG.
  • Plastic molded parts 32 lie on the ferrite core 31 and the strands 33 are embedded in their recesses. The strands are missing in FIG. 3a.
  • a symbolic section through the plastic molded parts 32 is shown with the indication of two inserted strands 33.
  • the plastic molded parts 32 facilitate the insertion of the strands 33.
  • the ferrite core 31 is designed in an E-shape and the winding is carried out around the middle leg of the E.
  • the three legs of the E are made very short, in particular as short as the height of the winding.
  • FIG. 4 shows the part for the inductive energy transmission of the system.
  • two line conductors 42 made of stranded wire are inserted in the base 41 and have a mutual spacing A of 140 mm.
  • values from 100 mm to 200 mm are also advantageous.
  • the flat transmitter head provided in a housing part 43 has a maximum distance B from the floor 41 of 15 mm, that is to say approximately one tenth of the distance A of the line conductors. Instead of a tenth, values between 7% and 12% are advantageous.
  • the plastic molded parts 32 are designed as modules that can be arranged next to one another, the recesses of which are designed such that the
  • Stranded wire can either be inserted in straight lines or in circular arc pieces. For this purpose, both the straight and the circular-shaped courses are deepened into the original
  • Embossed plastic part in such a way that ridges remain which are partially interrupted to one another, i.e. not all connect directly to one another.
  • the transmitter head is in a vehicle or relatively movable with respect to the ground

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Near-Field Transmission Systems (AREA)
  • Transformer Cooling (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a transmitter head for a system for contactless energy transmission. The inventive transmitter head comprises a support connected to at least one ferrite core. According to said invention, the ferrite core is embodied at least partially in the E-form and a flat winding is arranged around one leg of the E.

Description

Übertragerkopf und System zur berührungslosen EnergieübertragungTransmitter head and system for contactless energy transmission
Beschreibung:Description:
Die Erfindung betrifft einen Übertragerkopf und ein System zur berührungslosen Energieübertragung.The invention relates to a transmitter head and a system for contactless energy transmission.
Aus der DE 100 53 373 A1 ist eine Vorrichtung zur berührungslosen Energieübertragung bekannt. Dabei ist ein Übertragerkopf beschrieben, der induktive Energieübertragung ermöglicht und eine Windungszahl aufweist.DE 100 53 373 A1 discloses a device for contactless energy transmission. A transmitter head is described which enables inductive energy transmission and has a number of turns.
Aus der DE 44 46 779 C2 und der DE 197 35 624 C1 ist ein System zur berührungslosen Energieübertragung bekannt, wobei die Strecke aus einem stationär angeordneten Mittelleiter und Aluminium-Profil als Rückleitung besteht. Der Mittelleiter ist dabei von einem entlang dem Mittelleiter beweglichen U-förmigen Kern des Übertragerkopfes umgeben. Am U-förmigen Kern ist eine Wicklung vorgesehen. Insgesamt benötigt der Übertragerkopf ein großes Bauvolumen.From DE 44 46 779 C2 and DE 197 35 624 C1 a system for non-contact energy transmission is known, the route consisting of a stationary center conductor and aluminum profile as a return line. The center conductor is surrounded by a U-shaped core of the transmitter head which is movable along the center conductor. A winding is provided on the U-shaped core. Overall, the transmitter head requires a large volume.
Aus der WO 92/17929 ist ebenfalls ein System zur berührungslosen Energieübertragung, wobei die Übertragungsstrecke aus einer Hin- und einer Rückleitung in Form vonFrom WO 92/17929 is also a system for contactless energy transmission, the transmission path consisting of a forward and a return line in the form of
Linienleitern besteht. Dabei benötigt der mit einem E-förmigen Kern und einer am mittleren Schenkel de E-förmigen Kerns angeordneten Wicklung ausgeführte Übertragerkopf ebenfalls ein großes Bauvolumen.Line ladders exist. The transducer head, which has an E-shaped core and a winding arranged on the middle leg of the E-shaped core, also requires a large structural volume.
Aus der DE 197 46 919 A1 ist eine flache Anordnung bekannt, die allerdings einen geringen Wirkungsgrad bei der Energieübertragung zur Folge hat.A flat arrangement is known from DE 197 46 919 A1, which, however, results in low energy transmission efficiency.
Der Erfindung liegt daher die Aufgabe zugrunde, einen System zur berührungslosen Energieübertragung derart weiterzubilden, dass in kostengünstiger Weise ein geringeres Bauvolumen benötigt wird.The invention is therefore based on the object of developing a system for contactless energy transmission in such a way that a smaller construction volume is required in a cost-effective manner.
Erfindungsgemäß wird die Aufgabe bei dem Übertragerkopf nach den in Anspruch 1 oder 2 und bei dem System nach den in Anspruch 12 angegebenen Merkmalen gelöst. Wesentliche Merkmale der Erfindung bei dem Übertragerkopf sind, dass der Übertragerkopf für ein System zur berührungslosen Energieübertragung einen Träger umfasst, der mit mindestens einem Ferritkern verbunden ist, wobei der Ferritkern zumindest teilweise E- förmig ausgeführt ist und die Flachwicklung um einen Schenkel des E herum angeordnet ist. Insbesondere ist der Übertragerkopf für eine elektrische Energieübertragungsvorrichtung mit einer Primärleiteranordnung aus wenigstens zwei parallel zueinander verlaufenden Primärleitern und mindestens einer elektromagnetisch damit gekoppelten Sekundärwicklungsanordnung ausgeführt, die mechanisch von der Primärleiteranordnung getrennt und in deren Längsrichtung bewegbar ist, wobei die Sekundärwicklungsanordnung wenigstens eine Sekundärspule aufweist, die als Flachwicklung ausgebildet ist und die in einer Ebene liegt, die parallel zu der die Primärleiteranordnung aufnehmenden Ebene angeordnete ist, wobei der Übertragerkopf einen Träger umfasst, der mit mindestens einem Ferritkern verbunden ist, wobei der Ferritkern zumindest teilweise E-förmig ausgeführt ist und die Flachwicklung um einen Schenkel des E-förmigen Ferritkerns herum vorgesehen ist.According to the invention the object is achieved in the transmitter head according to the features in claim 1 or 2 and in the system according to the features specified in claim 12. Essential features of the invention in the transmitter head are that the transmitter head for a system for contactless energy transmission comprises a carrier which is connected to at least one ferrite core, the ferrite core being at least partially E-shaped and the flat winding being arranged around one leg of the E. is. In particular, the transmitter head for an electrical energy transmission device is designed with a primary conductor arrangement made up of at least two primary conductors running parallel to one another and at least one electromagnetically coupled secondary winding arrangement, which is mechanically separated from the primary conductor arrangement and can be moved in the longitudinal direction thereof, the secondary winding arrangement having at least one secondary coil that acts as Flat winding is formed and which lies in a plane which is arranged parallel to the plane receiving the primary conductor arrangement, the transmitter head comprising a carrier which is connected to at least one ferrite core, the ferrite core being at least partially E-shaped and the flat winding around a leg of the E-shaped ferrite core is provided around.
Von Vorteil ist dabei, dass der Übertragerkopf sehr flach, kostengünstig ist und ein geringes Bauvolumen beansprucht. Außerdem ist der Wirkungsgrad bei der Energieübertragung viel höher, da die E-förmige Ausführung die Feldlinien derart führt, dass weniger Streufelder entstehen und der Mehrteil der von den Primärleitungen generierten Feldlinien durch den Ferritkern mit den Schenkeln des E geführt wird.The advantage here is that the transmitter head is very flat, inexpensive and takes up a small amount of space. In addition, the efficiency in energy transmission is much higher, since the E-shaped design guides the field lines in such a way that fewer stray fields are created and the majority of the field lines generated by the primary lines are led through the ferrite core with the legs of the E.
Bei einer vorteilhaften Ausgestaltung sind die Primärleiter als Linienleiter ausgebildet oder die Primärleiter als Flachleiter ausgebildet, deren Flächennormale senkrecht zu der die Sekundärwicklungsanordnung aufnehmenden Ebene stehen. Von Vorteil ist dabei, dass hohe Stromdichten erreichbar sind, Litzenmaterial verwendbar ist und somit der Skin-Effekt verminderbar ist.In an advantageous embodiment, the primary conductors are designed as line conductors or the primary conductors are designed as flat conductors, the surface normal of which is perpendicular to the plane receiving the secondary winding arrangement. The advantage here is that high current densities can be achieved, stranded material can be used and the skin effect can thus be reduced.
Bei einer vorteilhaften Ausgestaltung ist die Sekundärwicklungsanordnung an der Unterseite des Bodens eines Fahrzeuges angeordnet. Von Vorteil ist dabei, dass ein Schienensystem ebenso verwendbar ist wie ein schienenloses System.In an advantageous embodiment, the secondary winding arrangement is arranged on the underside of the floor of a vehicle. The advantage here is that a rail system can be used as well as a railless system.
Bei einer vorteilhaften Ausgestaltung ist die Sekundärwicklungsanordnung in eine Vergussmasse eingebettet. Von Vorteil ist dabei, dass eine hohe Schutzart erreichbar ist. Bei einer vorteilhaften Ausgestaltung ist die Primärleiteranordnung stationär im oberflächennahen Bereich eines Fahrwegs angeordnet. Von Vorteil ist dabei, dass ein hoher Wirkungsgrad bei der Energieübertragung erzielbar ist.In an advantageous embodiment, the secondary winding arrangement is embedded in a casting compound. The advantage here is that a high degree of protection can be achieved. In an advantageous embodiment, the primary conductor arrangement is arranged in a stationary manner in the area of a route close to the surface. The advantage here is that a high degree of efficiency in energy transmission can be achieved.
Bei einer vorteilhaften Ausgestaltung ist die Primärleiteranordnung und/oderIn an advantageous embodiment, the primary conductor arrangement and / or
Sekundärleiteranordnung zumindest teilweise aus Litzenmaterial gebildet ist. Von Vorteil ist dabei, dass der Skin-Effekt verminderbar ist.Secondary conductor arrangement is at least partially formed from stranded material. The advantage here is that the skin effect can be reduced.
Bei einer vorteilhaften Ausgestaltung ist die Flachwicklung als Leiterbahn auf einer ein- oder mehrlagigen Platine ausgeführt. Von Vorteil ist dabei, dass eine besonderes kostengünstige Herstellung des Übertragerkopfes erreichbar ist.In an advantageous embodiment, the flat winding is designed as a conductor track on a single or multi-layer circuit board. The advantage here is that a particularly inexpensive manufacture of the transmitter head can be achieved.
Bei einer vorteilhaften Ausgestaltung ist die Platine auch mit Elektronikbauteilen bestückt vorgesehen. Von Vorteil ist dabei, dass die Anzahl der Komponenten reduzierbar ist, insbesondere die Anzahl der Mittel zum elektrischen und /oder mechanischen Verbinden reduzierbar ist.In an advantageous embodiment, the circuit board is also provided with electronic components. The advantage here is that the number of components can be reduced, in particular the number of means for electrical and / or mechanical connection can be reduced.
Bei einer vorteilhaften Ausgestaltung ist die Platine mit einem eine Kühlvorrichtung umfassenden Gehäuseteil verbunden. Insbesondere weist die Kühlvorrichtung Kühlrippen und/oder Kühlfinger auf. Von Vorteil ist dabei, dass die Wärme vom Gehäuseteil an die Kühlvorrichtung weiterleitbar ist.In an advantageous embodiment, the circuit board is connected to a housing part comprising a cooling device. In particular, the cooling device has cooling fins and / or cooling fingers. The advantage here is that the heat can be passed on from the housing part to the cooling device.
Wesentliche Merkmale der Erfindung bei dem System zur berührungslosen Energieübertragung mit einem Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, sind, dass im Boden zwei Linienleiter mit einem gegenseitigen Abstand A verlegt sind, wobei der Abstand des Übertragerkopfes vom Boden zwischen 0,05 * A und 0,2 * A beträgt. Von Vorteil ist dabei, dass bei besonders geringem Bauvolumen große Leistungen übertragbar sind.Essential features of the invention in the system for contactless energy transmission with a transmitter head according to at least one of the preceding claims are that two line conductors are laid in the floor at a mutual distance A, the distance of the transmitter head from the floor between 0.05 * A and 0 , 2 * A is. The advantage here is that large capacities can be transferred with a particularly small construction volume.
Weitere Vorteile ergeben sich aus den Unteransprüchen. BezugszeichenlisteFurther advantages result from the subclaims. LIST OF REFERENCE NUMBERS
1 Träger 5 2 Ferritkerne1 carrier 5 2 ferrite cores
3 Lage einer mehrlagigen Platine3 Layer of a multi-layer board
4 Lage einer mehrlagigen Platine4 Layer of a multi-layer board
5 Lage einer mehrlagigen Platine 21 Gehäuseteil5 layer of a multilayer board 21 housing part
10 22 Kühlrippen10 22 cooling fins
23 Elektronikbauteile23 electronic components
24 Ferritkerne24 ferrite cores
25 Wicklung25 winding
26 Platine 15 31 Ferritkern26 circuit board 15 31 ferrite core
32 Kunststoffformteil32 molded plastic part
33 Litze33 strands
41 Boden41 floor
42 Linienleiter 20 43 Gehäuseteil42 line conductor 20 43 housing part
A,B Abstand A, B distance
Die Erfindung wird nun anhand von Abbildungen näher erläutert:The invention will now be explained in more detail with reference to figures:
In der Figur 1a ist ein erfindungsgemäßer Übertragerkopf dargestellt, wobei in Figur 1b ein vergrößerter Ausschnitt des linken Endbereichs gezeigt ist. Er ist flach ausgeführt und benötigt ein geringes Bauvolumen.A transmitter head according to the invention is shown in FIG. 1a, an enlarged section of the left end region being shown in FIG. 1b. It is flat and requires a small volume.
Dabei sind auf den Träger 1 Ferritkerne 2 aufgebracht und verbunden, insbesondere als Klebeverbindung oder als lösbare Verbindung, wie Schraubverbindung oder dergleichen.In this case, ferrite cores 2 are applied and connected to the carrier 1, in particular as an adhesive connection or as a releasable connection, such as a screw connection or the like.
An den Ferritkernen 2 ist eine mehrlagige Platine mit Lagen (3, 4, 5) vorgesehen, die als flache Wicklungen ausgebildete Leiterbahnen aus Kupfer tragen und somit auf der Platine ausgeführt sind.A multi-layer circuit board with layers (3, 4, 5) is provided on the ferrite cores 2, which have copper conductor tracks designed as flat windings and are thus designed on the circuit board.
In einem anderen erfindungsgemäßen Ausführungsbeispiel wird dabei eine einzige ebene spiralförmige Wicklung als Leiterbahn einer einlagigen Platine vorgesehen, wobei dann allerdings weniger elektrische Leistung übertragbar ist.In another exemplary embodiment according to the invention, a single flat spiral winding is provided as the conductor track of a single-layer circuit board, although less electrical power can then be transmitted.
In anderen erfindungsgemäßen Ausführungsbeispielen, insbesondere nach Figur 1a und 1 b, wird dabei eine mehrlagige Platine (3,4,5) eingesetzt, die in mehreren Ebenen eine spiralförmige Wicklung aufweist. Insbesondere verläuft die Leitung des Stromes dabei nicht nur in einer einzigen spiralfömigen jeweiligen Ebene sondern die Leitung wechselt mehrfach zwischen den Ebenen zur Verminderung des Skin-Effektes. Das heißt, dass vorteiligerweise nach einem kurzen Leiterbahnabschnitt ein Wechsel in eine nächste Ebene der Platine erfolgt, dort wieder ein kurzer Leiterbahnabschnitt durchlaufen wird und dann wiederum gewechselt wird. Auf diese Weise entsteht eine quasi verdrillte Stromführung, die vom Grundprinzip her einer Litze entspricht, also einem mehrfachen Bündel gegenseitig isoliert ausgeführter Stromleitungen. Die so entstandene Wicklung ist also quasi-verdrillt ausgeführt.In other exemplary embodiments according to the invention, in particular according to FIGS. 1a and 1b, a multilayer board (3, 4, 5) is used which has a spiral winding in several planes. In particular, the conduction of the current does not only run in a single spiral-shaped respective level, but the line alternates several times between the levels to reduce the skin effect. This means that after a short conductor track section, a change to a next level of the circuit board advantageously takes place, a short conductor track section is run through again there and then another switch is made. In this way, a quasi-twisted current conduction is created, which corresponds in principle to a stranded wire, that is to say a multiple bundle of mutually insulated power lines. The winding thus created is thus quasi-twisted.
In Figur 2 ist der gesamte Aufbau des Übertragerkopfes mit die Wicklung tragender Platine 3 gezeigt. Die Platine 3 trägt zusätzlich auch Elektronikbauteile 23 und weist die notwendigen Leiterbahnen auf.In Figure 2, the entire structure of the transmitter head with the winding-supporting board 3 is shown. The circuit board 3 also carries electronic components 23 and has the necessary conductor tracks.
Die Platine 3 und die Ferritkerne 4 sind mit einem Gehäuseteil 21 verbunden, das auch Kühlrippen 22 zur Wärmabfuhr aufweist. In Figur 3 ist ein anderes erfindungsgemäßes Ausführungsbeispiel gezeigt. Dabei liegen auf dem Ferritkern 31 Kunststoffformteile 32 , in deren Vertiefungen die Litzen 33 eingebettet sind. In Figur 3a fehlen die Litzen. In der linken oberen Hälfte der Figuren 3 und 3a ist ein symbolischer Schnitt durch die Kunststoffformteile 32 gezeigt mit der Andeutung zweier eingelegten Litzen 33 . Die Kunststoffformteile 32 erleichtern das Einlegen der Litzen 33. Der Ferritkern 31 ist E-förmig ausgeführt und die Wicklung ist um den mittleren Schenkel des E herum ausgeführt. Dabei sind die drei Schenkel des E sehr kurz ausgeführt, insbesondere so kurz wie die Höhe der Wicklung ist.The circuit board 3 and the ferrite cores 4 are connected to a housing part 21 which also has cooling fins 22 for heat dissipation. Another exemplary embodiment according to the invention is shown in FIG. Plastic molded parts 32 lie on the ferrite core 31 and the strands 33 are embedded in their recesses. The strands are missing in FIG. 3a. In the upper left half of FIGS. 3 and 3a, a symbolic section through the plastic molded parts 32 is shown with the indication of two inserted strands 33. The plastic molded parts 32 facilitate the insertion of the strands 33. The ferrite core 31 is designed in an E-shape and the winding is carried out around the middle leg of the E. The three legs of the E are made very short, in particular as short as the height of the winding.
In der Figur 4 ist der Teil zur induktiven Energieübertragung des Systems gezeigt. Dabei sind im Boden 41 zwei aus Litze ausgeführten Linienleiter 42 eingelegt, die einen gegenseitigen Abstand A von 140 mm aufweisen. Bei anderen erfindungsgemäßen Ausführungsbeispielen sind auch Werte von 100 mm bis 200 mm vorteilig.FIG. 4 shows the part for the inductive energy transmission of the system. In this case, two line conductors 42 made of stranded wire are inserted in the base 41 and have a mutual spacing A of 140 mm. In other exemplary embodiments according to the invention, values from 100 mm to 200 mm are also advantageous.
Der flache, in einem Gehäuseteil 43 vorgesehene Übertragerkopf weist einen maximalen Abstand B zum Boden 41 von 15 mm auf, also etwa ein Zehntel des Abstandes A der Linienleiter. Statt eines Zehntels sind Werte zwischen 7 % bis 12 % vorteilhaft.The flat transmitter head provided in a housing part 43 has a maximum distance B from the floor 41 of 15 mm, that is to say approximately one tenth of the distance A of the line conductors. Instead of a tenth, values between 7% and 12% are advantageous.
Diese genannten geometrischen Merkmale werden bei der Erfindung erreicht, indem die Wicklung flach ausgeführt ist. Die Leitungen der Wicklung liegen dabei in einer Ebene und überkreuzen sich nicht.These geometric features mentioned are achieved in the invention in that the winding is flat. The lines of the winding lie on one level and do not cross each other.
In anderen erfindungsgemäßen Ausführungsbeispielen sind die Kunststoffformteile 32 als aneinander anreihbare Module ausgeführt, deren Vertiefungen derart gestaltet sind, dass dieIn other exemplary embodiments according to the invention, the plastic molded parts 32 are designed as modules that can be arranged next to one another, the recesses of which are designed such that the
Litze entweder in gerade Linien einlegbar ist oder in Kreisbogenstücke. Dazu sind sowohl die geraden als auch die kreisbogenfömigen Verläufe als Vertiefung in das ursprünglicheStranded wire can either be inserted in straight lines or in circular arc pieces. For this purpose, both the straight and the circular-shaped courses are deepened into the original
Kunststoffteil derart eingeprägt, dass Erhöhungen zurückbleiben, die zueinander teilweise unterbrochen sind, also nicht alle direkt aneinander anschließen.Embossed plastic part in such a way that ridges remain which are partially interrupted to one another, i.e. not all connect directly to one another.
Der Übertragerkopf ist in einem gegenüber dem Boden relativ bewegbaren Fahrzeug oderThe transmitter head is in a vehicle or relatively movable with respect to the ground
Maschinenteil eingebaut, das in den Figuren nicht gezeigt ist. Vorteiligerweise arbeitet das erfindungsgemäße System zur berührungslosen Energieübertragung nach den in der DE 44 46 779 C2, DE 100 53 373 A1 und/oder DE 197 35 624 C1 angegebenen elektronischen und elektrischen Merkmalen und ist entsprechend ausgeführt. Im Unterschied zu diesen Schriften ist jedoch die Leistungsübertragung, insbesondere der Übertragerkopf, mit besonders geringem Bauvolumen ausgeführt. Machine part installed, which is not shown in the figures. The system according to the invention for contactless energy transmission advantageously works in accordance with the electronic and electrical features specified in DE 44 46 779 C2, DE 100 53 373 A1 and / or DE 197 35 624 C1 and is designed accordingly. In contrast to these documents, however, the power transmission, in particular the transmitter head, is carried out with a particularly small construction volume.

Claims

Patentansprüche: claims:
1. Übertragerkopf für ein System zur berührungslosen Energieübertragung,1. transmitter head for a system for contactless energy transmission,
umfassend einen Träger, der mit mindestens einem Ferritkern verbunden ist,comprising a carrier which is connected to at least one ferrite core,
wobei der Ferritkern zumindest teilweise E-förmig ausgeführt ist und die Flachwicklung um einen Schenkel des E herum angeordnet ist. wherein the ferrite core is at least partially E-shaped and the flat winding is arranged around one leg of the E.
2. Übertragerkopf für eine elektrische Energieübertragungsvorrichtung mit einer Primärleiteranordnung aus wenigstens zwei parallel zueinander verlaufenden Primärleitern und mindestens einer elektromagnetisch damit gekoppelten Sekundärwicklungsanordnung, die mechanisch von der Primärleiteranordnung getrennt und in deren Längsrichtung bewegbar ist,2. Transmitter head for an electrical energy transmission device with a primary conductor arrangement comprising at least two primary conductors running parallel to one another and at least one secondary winding arrangement coupled electromagnetically thereto, which is mechanically separated from the primary conductor arrangement and movable in its longitudinal direction,
wobei die Sekundärwicklungsanordnung wenigstens eine Sekundärspule aufweist, die als Flachwicklung ausgebildet ist und die in einer Ebene liegt, die parallel zu der die Primärleiteranordnung aufnehmenden Ebene angeordnet ist,wherein the secondary winding arrangement has at least one secondary coil which is designed as a flat winding and which lies in a plane which is arranged parallel to the plane receiving the primary conductor arrangement,
wobei der Übertragerkopf einen Träger und mindestens einen mit diesem verbundenen Ferritkern umfasst,the transmitter head comprising a carrier and at least one ferrite core connected thereto,
wobei der Ferritkern zumindest teilweise E-förmig ausgeführt ist und die Flachwicklung um einen Schenkel des E-förmigen Ferritkerns herum vorgesehen ist. wherein the ferrite core is at least partially E-shaped and the flat winding is provided around one leg of the E-shaped ferrite core.
3. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Primärleiter als Linienleiter ausgebildet sind oder dass die Primärleiter als Flachleiter ausgebildet sind, deren Flächennormale senkrecht zu der die Sekundärwicklungsanordnung aufnehmenden Ebene stehen.3. Transmitter head according to at least one of the preceding claims, characterized in that the primary conductors are designed as line conductors or that the primary conductors are designed as flat conductors, the surface normal of which is perpendicular to the plane receiving the secondary winding arrangement.
4. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Sekundärwicklungsanordnung an der Unterseite des Bodens eines Fahrzeuges angeordnet ist.4. Transmitter head according to at least one of the preceding claims, characterized in that the secondary winding arrangement is arranged on the underside of the floor of a vehicle.
5. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Sekundärwicklungsanordnung in eine Vergussmasse eingebettet ist.5. Transmitter head according to at least one of the preceding claims, characterized in that the secondary winding arrangement is embedded in a casting compound.
6. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Primärleiteranordnung stationär im oberflächennahen Bereich eines Fahrwegs angeordnet ist.6. Transmitter head according to at least one of the preceding claims, characterized in that the primary conductor arrangement is arranged in a stationary manner in the region of a route close to the surface.
7. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Primärleiteranordnung und/oder Sekundärleiteranordnung zumindest teilweise aus Litzenmaterial gebildet ist.7. Transmitter head according to at least one of the preceding claims, characterized in that the primary conductor arrangement and / or secondary conductor arrangement is at least partially formed from stranded material.
8. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Flachwicklung als Leiterbahn auf einer ein- oder mehrlagigen Platine ausgeführt ist.8. Transmitter head according to at least one of the preceding claims, characterized in that the flat winding is designed as a conductor track on a single or multi-layer board.
9. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Platine auch mit Elektronikbauteilen bestückt vorgesehen ist. 9. Transmitter head according to at least one of the preceding claims, characterized in that the circuit board is also provided with electronic components.
10. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Platine mit einem eine Kühlvorrichtung umfassenden Gehäuseteil verbunden ist.10. Transmitter head according to at least one of the preceding claims, characterized in that the circuit board is connected to a housing part comprising a cooling device.
11. Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Kühlvorrichtung Kühlrippen und/oder Kühlfinger aufweist 11. Transmitter head according to at least one of the preceding claims, characterized in that the cooling device has cooling fins and / or cooling fingers
12. System zur berührungslosen Energieübertragung mit einem Übertragerkopf nach mindestens einem der vorangegangenen Ansprüche,12. System for contactless energy transmission with a transmitter head according to at least one of the preceding claims,
wobei im Boden zwei Linienleiter 42 mit einem gegenseitigen Abstand A verlegt sind,where two line conductors 42 are laid in the ground at a mutual distance A,
dadurch gekennzeichnet, dasscharacterized in that
der Abstand des Übertragerkopfes vom Boden zwischen 0,05 * A und 0,2 * A beträgt. the distance between the transmitter head and the floor is between 0.05 * A and 0.2 * A.
EP04713037A 2003-03-19 2004-02-20 Transmitter head and a system for contactless energy transmission Expired - Lifetime EP1606869B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10312284A DE10312284B4 (en) 2003-03-19 2003-03-19 Transducer head, system for contactless energy transmission and use of a transmitter head
DE10312284 2003-03-19
PCT/EP2004/001660 WO2004084372A1 (en) 2003-03-19 2004-02-20 Transmitter head and a system for contactless energy transmission

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EP1606869A1 true EP1606869A1 (en) 2005-12-21
EP1606869B1 EP1606869B1 (en) 2008-07-16

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EP (1) EP1606869B1 (en)
CN (1) CN100431237C (en)
AT (1) ATE401688T1 (en)
DE (2) DE10312284B4 (en)
WO (1) WO2004084372A1 (en)

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US20060209487A1 (en) 2006-09-21
EP1606869B1 (en) 2008-07-16
US7492247B2 (en) 2009-02-17
DE10312284B4 (en) 2005-12-22
ATE401688T1 (en) 2008-08-15
CN1762082A (en) 2006-04-19
WO2004084372A1 (en) 2004-09-30
CN100431237C (en) 2008-11-05
DE502004007613D1 (en) 2008-08-28
DE10312284A1 (en) 2004-10-28

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