EP2095382B1 - Transformer with a plug-in laminate winding - Google Patents
Transformer with a plug-in laminate winding Download PDFInfo
- Publication number
- EP2095382B1 EP2095382B1 EP07802183A EP07802183A EP2095382B1 EP 2095382 B1 EP2095382 B1 EP 2095382B1 EP 07802183 A EP07802183 A EP 07802183A EP 07802183 A EP07802183 A EP 07802183A EP 2095382 B1 EP2095382 B1 EP 2095382B1
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- European Patent Office
- Prior art keywords
- plug
- transformer
- plates
- coil
- winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F27/2852—Construction of conductive connections, of leads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
Definitions
- the invention relates to an inductive component, in particular a planar transformer, with a tab winding.
- transformers which are intended for use at high temperatures, furthermore often have insulating moldings as additional insulation.
- Another disadvantage in the production of such transformers is that additional manufacturing steps are required by the insulating moldings, thereby increasing the manufacturing cost.
- Another area for the transformers described herein includes photovoltaic inverters employing a voltage-adapting transformer, with the focus of the kW power range. Due to the limited efficiency, not all of the energy emitted by the generator is fed into the grid, but a part of it is converted into heat in the inverter and in particular in the transformer. A higher power loss leads to a reduction in performance.
- the publication US 5,010,314 A discloses a planar transformer whose coils are formed by flat components, which may be circuit boards or metal plates.
- the transformer further includes a bobbin formed by two composite components, each having a rectangular shape and side surfaces perpendicular to the top and bottom surfaces of the component.
- the parts of the bobbin have in the middle of an opening surrounding walls. When the parts of the bobbin are assembled, the walls surround the middle leg of the magnetic core.
- the publication WO 03/030189 A discloses a planar transformer having a bobbin enclosing a portion of a ferrite core and supporting at least one secondary coil.
- Each of the secondary coils carried by the bobbin is formed by at least one open on one side winding plate, which can be plugged onto the bobbin and connected to a circuit board.
- the device according to the invention according to claim 1 can be formed in particular a compact, reliable and heat-conducting component.
- the baffles form a rigid winding, which can be adapted to the bobbin, whereby a very accurate production with low tolerances is possible. When assembling the bobbin and the baffles this accuracy is maintained by the thus formed stability of the component. Thus, advantageously required creepage distances and clearances can be specified exactly.
- the distances between the turns of the plug-in plate winding allow the reception of the second coil, so that the alternating primary / secondary coil arrangement
- the transformer of the present invention has low power dissipation, high efficiency, and high withstand voltage.
- the bobbin has a greater depth than the plug-in sheet winding.
- the upper bobbin sections is a well-defined separation of the primary coil of the secondary coil and other components to ensure a dielectric strength or required creepage distances and clearances according to standard. This insulation ensures high dielectric strength, making it easy to use for high-voltage transformers.
- the bobbin and the baffle winding each have a coordinated connecting element. These connecting elements are used for wireless connection of a coil with the bobbin, whereby a mechanical fixation and a compact design is ensured.
- the bobbin is produced by a casting process. In a further embodiment, the bobbin is produced by means of an encapsulation. These manufacturing methods allow a relatively low cost production, since these bobbins are manufacturable as standard and ensures independence in terms of the production facility and the manufacturer. By the use of the method, a high reproducibility is given and consequently a cost-effective production possible, whereby a small range of variation of the component properties is achieved.
- the plug-in plate winding comprises individual plug-in plates which have an open end.
- These baffles are preferably made of copper and are stamped, whereby a simple and inexpensive production is possible.
- the plug-in plate winding is used to produce transformers with low overall height and high power density.
- the baffles are also manufactured as standard with low tolerances and thus inexpensive to manufacture.
- the baffles on the outer periphery of at least one side leg a projection for an electrical connection with a connecting element for plug-in sheets. It is also possible to form recesses for the same purpose instead of protrusions.
- the plug-in plates are formed on at least one inner side of the side leg, with an engagement element which creates a locking connection with at least one latching element of the bobbin.
- the at least one latching element of the bobbin may be formed on one of the tab sheet winding facing surface to ensure a connection with the at least one engagement element.
- the locking element is formed elastically deformable.
- This embodiment enables a simple and inexpensive assembly of the transformer components.
- Another advantage is that the connector simultaneously serves the mechanical fixation, so that an additional gluing, Klammem, screwing or the like is not required.
- At least two plug-in metal sheets are connected to one another with the aid of the connecting element for plug-in sheets.
- These connectors may be soldered or welded or other types of electrical connection may be used.
- the inductive component is encapsulated or encapsulated with plastic.
- plastic This ensures, among other things, an additional improvement of the dielectric strength and the creepage distances and clearances.
- This embodiment ensures the formation of a compact, reliable device. Due to the complete embedment in the potting compound, the individual transformer components are fixed and stabilized. By using an encapsulation either the protruding ends of the bobbin can be reduced or the baffle winding can be made wider, and thus increase the performance.
- the injection molding itself proves to be particularly simple, since the copper is already fixed by the bobbin, which is preferably made of plastic.
- Another advantage of the extrusion coating of the transformer according to the invention is the protection against moisture, temperature fluctuations and corrosion. Furthermore, the use of an injection molding process is cheaper than the production of a housing, and also saves space due to the often very small space designed.
- the embodiment according to claim 13 is preferably used for generating small gear ratios.
- the two coils are arranged alternately, whereby the stray inductance is reduced and higher operating frequencies during operation of the transformer are possible.
- this embodiment realizes a compact, low-profile, inductive component.
- the use of a tab coil has the advantage of high current efficiency, with nesting resulting in low electrical and magnetic losses.
- a transformer is provided which responds to high temperatures or temperature fluctuations little critical and is good heat conducting.
- the transformer of the present invention has a low power dissipation, a high efficiency, and a design-related, reproducible withstand voltage.
- the pockets of the bobbin have a greater depth than the dummy plate winding.
- the geometry of the bobbin or the pockets ensures good insulation, which ensures a high dielectric strength and can be dispensed with an additional insulation.
- the deeper pockets provide a well-defined separation of the primary and secondary coils as well as other components, making it possible to constructively define creepage and airway defined. This proves to be advantageous, in particular with regard to the use of an E-core, since the coil body has no inner lateral surface enclosing the E-core, as a result of which voltage breakdowns could occur over short air gaps. By forming the deep pockets, the occurrence of voltage breakdowns can be reduced.
- the plug-in windings of the primary coil and / or the secondary coil comprise individual windings, which are connected to each other in sections, so that the respective coils have at least two windings.
- individual turns of the winding are electrically contacted at least in sections. The nesting of at least two turns improves the coupling under the windings. Since these sheets are also preferably manufacturable by means of a stamping process, they can be produced in series, and thus cost-effectively.
- the plug-in plates on the outer circumference of at least one side leg on a projection for an electrical connection with a connecting element for plug-in plates may have a recess instead of a projection on the outer periphery of at least one side leg.
- the baffles may be formed on at least one outer side of the side leg with an engagement member which ensures a connection with at least one locking element of the bobbin or the baffles have at least one end of a side leg a projection or a recess for electrical connection with the connecting element for mounting plates on.
- the at least one latching element of the bobbin may be formed on a jacket surface facing the plug-in sheet winding in order to ensure a connection with the at least one engagement element, wherein the at least one latching element may be formed elastically deformable.
- connection points of the inductive component are encapsulated or encapsulated with plastics. This results in the same advantages mentioned above.
- a centering means is formed at one end of the bobbin and at one end of the baffles to ensure easier insertion of the lancing plates into the bobbin with small tolerances.
- Fig. 1a shows a bobbin 101 of a transformer 100, which is designed to receive a first coil 102 and a second coil 103.
- the bobbin 101 is preferably made of plastic, whereby a simple and inexpensive production is ensured.
- the bobbin 101 is formed in the embodiment shown substantially rectangular and comprises parallel running walls 106 which are arranged in a stacked manner. For example, results for a supplied power of 1 kW in such a construction volume 10-50 cm 3 for the coil body, preferably 15 - 30 cm 3, and in particular about 3x3x2 cm 3.
- the bobbin 101 has in the middle of an opening which is bounded by the lateral surfaces 111 to a magnetic E-core (112 in Fig.
- the coil 102 includes a tab coil 104 formed of one or more turns, the coils being arranged in a stacked manner. Between each two turns of the plug-in plate winding 104, a distance for receiving the second coil 103 is formed.
- the coil 103 comprises a winding, which may comprise a coil wire or a coil strand, wherein the number of turns can be reduced or increased as required.
- the bobbin 101 and the plug-in plate winding 104 on a coordinated fastener are provided with the connecting element in the form of a bridge 107, wherein the bridge 107 is fixedly connected to the two walls 106.
- the bridge 107 serves as Einschiebschutz the bobbin 101 to prevent confusion when plugging the Steckblechwicklung 104 and the bobbin 101 pluggable.
- the bridge 107 is attached to the sidewalls between the two parallel walls 106.
- the bridge 107 may also be detachably connected to the walls 106.
- the bridge 107 offers the advantage of a fail-safe construction, and that the bobbin 101 and the plug-in plate winding 104 can be connected to each other without additional connecting material, whereby it is possible to optimize the desired compact design.
- the tab 104 includes individual sheets having an open end. Preferably, these sheets are made of copper.
- the sheets of the tab 104 are generally stamped for cost reasons, resulting in the additional advantage of a standard production. Due to the high reproducibility, this also results in the advantage of independence with regard to the production facility and the manufacturer. Since the bobbin 101 is also produced in a cost-effective and rapid manner by means of an injection molding process, the bobbin 101 has the same advantages.
- the bobbin 101 is formed with a greater depth than the tab 104 winding. This geometry of the bobbin 101 ensures good insulation, so that additional insulation materials can be omitted. The formed depth provides good separation of the first and second coils as well as other components to define defined creepage distances and clearances. Furthermore, in this embodiment, in each case two plates of the plug-in plate winding 104 are interconnected by means of conductive connecting elements for the plug-in plates 108. In this embodiment, the connecting elements for the plug-in plates 108 are attached to the rear end and to the side of the bobbin 101, this flexible geometry advantageously serving to that the transformer 100 can be used in small and nested installation spaces.
- the protrusions or depressions 110 formed on the plug-in plate winding 104 serve for the electrical connection with the connecting elements for the plug-in plates 108.
- the protrusions or depressions 110 can also be plugged, glued, clamped, welded or screwed to the connecting elements for the plug-in plates 108.
- the upper end of the connectors for the baffles 108 serves as a terminal 109, which is provided with areas by means of which, for example, a simpler attachment of a conductor wire is made possible.
- Fig. 1b shows a three-dimensional view of the transformer 100 with the bobbin 101, which is connected to the magnetic core 112 such that the bobbin surrounds the center leg of the core 112.
- the magnetic core 112 is preferably encapsulated or cast together after insertion into the transformer 100 together with the bobbin 101. It is also possible to provide the spool alone with wrapping material. This enables an improved hermetic coating by the encapsulation or the encapsulation and in particular an improved seal against the ingress of moisture.
- the wrapping material of the transformer 100 serves as protection against temperature fluctuations and corrosion and ensures better dielectric strength. Due to the complete embedding in the wrapping material, the individual transformer components are fixed and stabilized.
- the Fig. 2a to 2d show various embodiments for connection to the bridge 107 and / or the connector for baffles 108.
- the Fig. 2a a schematic representation of a plug-in plate 200 having an open end, wherein the plug-in plates on the outer circumference of a side leg 202 have at least one projection or a recess 220.
- This embodiment is used for electrical connection with the connecting element for plug-in plates 108th Die
- Fig. 2b shows a schematic representation of the plug-in plate 200 with an open end, wherein the baffles 200 have on at least one end of a side leg 202 a projection or a recess 230 for electrical connection to the connection element for baffles 108, and the Fig. 2c FIG.
- FIG. 12 shows a schematic representation of the plug-in plate 200 with an open end, wherein a projection or a recess is formed at one end of a side leg 202, and another projection or a recess on the outside of the side leg 202. Also in the embodiment of FIG Fig. 2c possible to attach the attachment of a projection or a depression on the inside of the side leg 202. This training serves in particular the connection with the connecting element for plug-in plates 108, whereby advantageously a confusion of the insertion position of the plug-in plates can be avoided.
- the Fig. 2d shows a schematic representation of the plug-in plate 200, wherein the plug-in plate 200 is formed on at least one inner side or at least one outer side of the side leg with an engagement element 240.
- the bobbin 101 has at least one latching element 340 in the lateral surface 111 facing the plug-in plate winding 104 Fig. 3a on to connect.
- the locking element 340 is formed elastically formable on the bobbin 101. This embodiment ensures a simple and inexpensive assembly of the transformer components. Another advantage is that the connector of the Figure 2d the mechanical fixation is used.
- FIG. 3a shows a further embodiment of the present invention.
- a transformer 300 comprises a bobbin 301 for receiving a primary coil 302 and a secondary coil 303, wherein the primary coil 302 and the secondary coil 303 have a plug-in coil 304 comprising one or more windings.
- the plug-in coil 304 comprising one or more windings.
- it is formed with a plurality of pockets 305 for receiving the tab windings 304 stacked on top of each other so that the pockets 305 form a wall 306 between the turns that are parallel extends to the plug-in plate winding 304.
- the pockets 305 of the bobbin 301 of the second embodiment also have a greater depth than the tab coil 304.
- the separation of the primary coil 302 from the secondary coil 303 and from other components ensures a defined creepage and clearance distances.
- the coil former 301 is preferably made of plastic, whereby a simple and inexpensive production is ensured.
- the bobbin 301 is substantially rectangular in shape and includes parallel-running walls 306 arranged in a stacked manner. For example, results for a supplied power of 2kW in about a physical volume from 30 to 100 cm 3 for the coil body, preferably 40 - 50 cm 3, and in particular about 4x4x3 cm 3.
- the bobbin 301 has in the middle of an opening which is bounded by no lateral surfaces 111 to a magnetic core (312 in Fig. 3b ).
- the geometry of the bobbin 301 ensures a very good insulation, so that additional insulation materials can be omitted.
- the bobbin 301 is, as in the previous embodiment, manufactured by means of an injection molding or encapsulation method, and consequently has the same advantages as described above.
- the plug-in windings 304 of the primary coil 302 and the secondary coil 303 are formed from individual plug-in plates, which have an open end.
- the tab windings 304 of the primary coil 302 and / or the secondary coil 303 may comprise individual turns connected in sections, such that the respective coils have at least two turns.
- individual turns of the winding are electrically contacted at least in sections.
- the individual plug-in plates and the sections of interconnected plug-in plates are preferably made of copper.
- FIG. 2a to 2c shown embodiments for an electrical connection to the connector plate 308 can also be applied to the second embodiment of the invention. That's how it shows Fig. 2a a schematic representation of a plug-in plate 200 having an open end, wherein the plug-in plates 200 on the inner circumference of at least one side legs 202 has a projection or recess 220 for electrical connection with the connecting element for plug-in panels 308.
- the Fig. 2b shows a schematic representation of the plug-in plate 200 having an open end, wherein the plug-in plates 200 at least one end of a side leg 202 has a projection or a recess 230 for have an electrical connection with the connecting element of the plug-in plate 308.
- the plug-in plate 200 is also possible to form the plug-in plate 200 with a projection or recess at one end of a side leg 202 and a further projection or recess on the inside of the side leg 202 (not shown).
- This training is used in particular for electrical connection with the connecting elements for plug-in panels 308th Die
- Fig. 2d shows a schematic representation of the plug-in plate 200, wherein the plug-in plate 200 is formed on at least one outer side of the side leg, in the vicinity of the connection point, with an engagement element 240.
- the bobbin 301 has at least one latching element 340 on a lateral surface 311 facing the plug-in plate winding 304 (see FIG Fig. 3a ) to allow a connection.
- the locking element 340 formed on the bobbin 301 elastically formable.
- one or more sheets of the plug-in plate winding 304 are interconnected by means of connecting elements for the plug-in plates 308.
- a centering means (not shown) may be formed at one end of the bobbin and at one end of the baffles to ensure easier insertion of the lancing plates into the bobbin with small tolerances.
- FIG. 12 shows a three-dimensional view of the transformer 300 having a magnetic core 312 connected to the bobbin 301 such that the bobbin 301 engages the center leg of the core 312.
- the bobbin 301 prior to insertion of the core 312, the bobbin 301 is injection-molded or encapsulated with a suitable encapsulant by means of an injection molding process.
- the deeper pockets can be made smaller, or the plug-in coil 304 increases to increase the power density.
- the above-mentioned enveloping methods provide protection against moisture, temperature variations and corrosion as previously described.
- Fig. 3c shows a further embodiment of the present invention, in which the connecting elements for the baffles 308 of the transformer 300 are encapsulated with plastic, and only the terminal 309 remains free.
- This embodiment ensures the formation of a compact, reliable device. Because of the complete embedding of the connecting elements for the baffles 308 in the wrapping material, the individual transformer components are fixed and stabilized.
- the wrapping process itself proves to be particularly simple, since the copper is already fixed by the bobbin, which is preferably made of plastic. Furthermore, the use of this wrapping method is cheaper than the production of a housing, and also space-saving due to the often very small design space, because it is possible to deform the connections 309 depending on the size and shape of the space.
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Abstract
Description
Die Erfindung betrifft ein induktives Bauelement, insbesondere einen Planartransformator, mit einer Steckblechwicklung.The invention relates to an inductive component, in particular a planar transformer, with a tab winding.
Elektronik, die in den unterschiedlichsten Bereichen für mehr Sicherheit und Komfort sorgt, bestimmt die Entwicklung neuer Technologien in der Kfz-Industrie, wie beispielsweise die Hybridtechnologie. Hierbei spielen induktive Bauelemente eine wesentliche Rolle und müssen dabei den permanent steigenden Anforderungen der Autoindustrie gerecht werden. Die größten Probleme stellen hierbei die Baugröße und die geringe geometrische Flexibilität verfügbarer Leistungsbauelemente und die große Temperaturbelastung dar. Insbesondere eine Spannungswandlung mit Transformator kann zu einer erheblichen Wärmeerzeugung in den Spulen führen, wobei die Hitze an die Umgebung und an benachbarte Bauteile abgegeben werden muss. Des Weiteren kommt es häufig vor, dass der den Transformator aufnehmende Bauraum klein und zerklüftet ausgebildet ist, so dass die geometrische Inflexibilität herkömmlicher Bauteile eine Anordnung schwierig macht und unter Umständen bei einer thermisch ungünstigen Positionierung mit einer Leistungseinbuße verbunden ist.Electronics, which provide more safety and comfort in a wide variety of areas, are driving the development of new technologies in the automotive industry, such as hybrid technology. Here inductive components play an essential role and must meet the ever-increasing demands of the auto industry. The biggest problems here are the size and the low geometric flexibility of available power components and the high temperature load. In particular, a voltage conversion with transformer can lead to significant heat generation in the coils, the heat must be delivered to the environment and to adjacent components. Furthermore, it often happens that the space accommodating the transformer is small and rugged, so that the geometric inflexibility of conventional components makes an arrangement difficult and may be associated with a performance penalty in a thermally unfavorable positioning.
Bekannte Transformatoren, die für den Einsatz bei hohen Temperaturen vorgesehen sind, weisen des Weiteren häufig Isolationsformteile als zusätzliche Isolation auf. Die Herstellung dieser Isolationsformteile, die relativ kompliziert aufgebaut sind, erweist sich als äußerst aufwendig und teuer. Ein weiterer Nachteil bei der Herstellung derartiger Transformatoren ist es, dass durch die Isolationsformteile zusätzliche Fertigungsschritte notwendig werden, wodurch sich die Fertigungskosten erhöhen.Known transformers, which are intended for use at high temperatures, furthermore often have insulating moldings as additional insulation. The preparation of these insulating moldings, which are constructed relatively complicated, proves to be extremely complicated and expensive. Another disadvantage in the production of such transformers is that additional manufacturing steps are required by the insulating moldings, thereby increasing the manufacturing cost.
Ein weiteres Gebiet für die hier beschriebenen Transformatoren umfasst Fotovoltaik-Wechselrichter, in denen ein Transformator zur Spannungsanpassung verwendet ist, wobei der Schwerpunkt der Leistungen im kW-Bereich liegt. Aufgrund des beschränkten Wirkungsgrads wird nicht die ganze vom Generator abgegebene Energie ins Netz eingespeist, sondern ein Teil davon im Wechselrichter und insbesondere im Transformator in Wärme umgesetzt. Eine höhere Verlustleistung führt damit zu einer Verringerung der Performance.Another area for the transformers described herein includes photovoltaic inverters employing a voltage-adapting transformer, with the focus of the kW power range. Due to the limited efficiency, not all of the energy emitted by the generator is fed into the grid, but a part of it is converted into heat in the inverter and in particular in the transformer. A higher power loss leads to a reduction in performance.
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Vor diesem Hintergrund ist es die Aufgabe der vorliegenden Erfindung, einen Transformator auszubilden, der unter anspruchsvollen Betriebsbedingungen eine hohe Bauteitzuverlässigkeit und Lebensdauer gewährleistet, und trotz einer geringen Bauhöhe eine gute Isolierung aufweist.Against this background, it is the object of the present invention to form a transformer which ensures a high building reliability and durability under demanding operating conditions, and despite having a low overall height has good insulation.
Diese Aufgabe wird erfindungsgemäß gelöst durch einen Transformator, gemäß der Ansprüche 1 und 13. Die bevorzugte Ausführungsformen der Erfindung werden in den abhängigen Ansprüchen definiertThis object is achieved according to the invention by a transformer according to claims 1 and 13. The preferred embodiments of the invention are defined in the dependent claims
Durch die Verwendung des erfindungsgemäßen Bauelements gemäß Anspruch 1 lässt sich insbesondere ein kompaktes, zuverlässiges und wärmeleitendes Bauteil ausbilden. Die Steckbleche bilden eine starre Wicklung, die an den Spulenkörper angepasst werden kann, wodurch eine äußerst genaue Fertigung mit geringen Toleranzen möglich ist. Beim Zusammenfügen des Spulenkörpers und der Steckbleche wird diese Genauigkeit durch die somit gebildete Stabilität des Bauteils beibehalten. Somit können vorteilhafterweise geforderte Kriech- und Luftstrecken genau vorgegeben werden. Die Abstände zwischen den Windungen der Steckblechwicklung ermöglichen die Aufnahme der zweiten Spule, so dass die abwechselnde Primär/SekundärspulenanordnungBy using the device according to the invention according to claim 1 can be formed in particular a compact, reliable and heat-conducting component. The baffles form a rigid winding, which can be adapted to the bobbin, whereby a very accurate production with low tolerances is possible. When assembling the bobbin and the baffles this accuracy is maintained by the thus formed stability of the component. Thus, advantageously required creepage distances and clearances can be specified exactly. The distances between the turns of the plug-in plate winding allow the reception of the second coil, so that the alternating primary / secondary coil arrangement
die Streuinduktivität verringert und so die Effizienz des Transformators erhöht. Somit wird ein Transformator bereitgestellt, der auf hohe Temperaturen bzw. Temperaturschwankungen wenig kritisch reagiert und gut wärmeleitend ist. Der Transformator der vorliegenden Erfindung weist eine geringe Verlustleistung, einen hohen Wirkungsgrad, und eine hohe Spannungsfestigkeit auf.reduces the stray inductance and thus increases the efficiency of the transformer. Thus, a transformer is provided which responds to high temperatures or temperature fluctuations little critical and is good heat conducting. The transformer of the present invention has low power dissipation, high efficiency, and high withstand voltage.
In einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung weist der Spulenkörper eine größere Tiefe als die Steckblechwicklung auf. Durch die Oberstehenden Spulenkörperabschnitte erfolgt eine gut definierte Trennung der Primärspule von der Sekundärspule sowie von anderen Komponenten, um eine Spannungsfestigkeit oder geforderte Kriech- und Luftstrecken nach Norm sicher zu stellen. Diese Isolation gewährleistet eine hohe Durchschlagsfestigkeit, die den Einsatz für Transformatoren mit hohen Spannungen problemlos ermöglichen.In a further preferred embodiment of the present invention, the bobbin has a greater depth than the plug-in sheet winding. By the upper bobbin sections is a well-defined separation of the primary coil of the secondary coil and other components to ensure a dielectric strength or required creepage distances and clearances according to standard. This insulation ensures high dielectric strength, making it easy to use for high-voltage transformers.
Gemäß dem vorliegenden Anspruch 1 weisen der Spulenkörper und die Steckblechwicklung jeweils ein aufeinander abgestimmtes Verbindungselement auf. Diese Verbindungselemente dienen dem drahtlosen Verbinden einer Spule mit dem Spulenkörper, wodurch eine mechanische Fixierung und eine kompakte Ausbildung gewährleistet wird.According to the present claim 1, the bobbin and the baffle winding each have a coordinated connecting element. These connecting elements are used for wireless connection of a coil with the bobbin, whereby a mechanical fixation and a compact design is ensured.
In einer bevorzugten Ausführungsform ist der Spulenkörper mit einem Vergussverfahren hergestellt. In einer weiteren Ausführungsform ist der Spulenkörper mithilfe einer Umspritzung gefertigt. Diese Fertigungsverfahren ermöglichen eine Herstellung mit relativ geringem Aufwand, da diese Spulenkörper serienmäßig fertigbar sind und eine Unabhängigkeit hinsichtlich der Produktionsstätte und des Herstellers gewährleistet. Durch die Verwendung der Verfahren ist eine hohe Reproduzierbarkeit gegeben und infolgedessen auch eine kostengünstige Fertigung möglich, wodurch eine kleine Schwankungsbreite der Bauteileigenschaften erreicht wird.In a preferred embodiment, the bobbin is produced by a casting process. In a further embodiment, the bobbin is produced by means of an encapsulation. These manufacturing methods allow a relatively low cost production, since these bobbins are manufacturable as standard and ensures independence in terms of the production facility and the manufacturer. By the use of the method, a high reproducibility is given and consequently a cost-effective production possible, whereby a small range of variation of the component properties is achieved.
In einer weiteren Ausbildung der vorliegenden Erfindung umfasst die Steckblechwicklung einzelne Steckbleche, die ein offenes Ende aufweisen. Diese Steckbleche sind vorzugsweise aus Kupfer hergestellt und werden gestanzt, wodurch eine einfache und kostengünstige Herstellung ermöglicht wird. Die Steckblechwicklung dient zur Herstellung von Transformatoren mit geringer Bauhöhe und hoher Leistungsdichte. Die Steckbleche sind ebenfalls serienmäßig mit geringen Toleranzen fertigbar und somit kostengünstig herzustellen.In a further embodiment of the present invention, the plug-in plate winding comprises individual plug-in plates which have an open end. These baffles are preferably made of copper and are stamped, whereby a simple and inexpensive production is possible. The plug-in plate winding is used to produce transformers with low overall height and high power density. The baffles are also manufactured as standard with low tolerances and thus inexpensive to manufacture.
In weiteren Ausbildungen der vorliegenden Erfindung weisen die Steckbleche an mindestens einem Ende eines Seitenschenkels einen Vorsprung für eine elektrische Verbindung mit einem Verbindungselement für Steckbleche auf. Des Weiteren können die Steckbleche an dem Außenumfang von mindestens einem Seitenschenkel einen Vorsprung für eine elektrische Verbindung mit einem Verbindungselement für Steckbleche aufweisen. Es ist auch möglich, anstelle von Vorsprüngen Vertiefungen für denselben Zweck auszubilden. Ferner sind die Steckbleche an mindestens einer Innenseite des Seitenschenkels, mit einem Eingriffselement ausgebildet, das eine arretierende Verbindung mit mindestens einem Rastelement des Spulenkörper schafft. Dabei kann das mindestens eine Rastelement des Spulenkörper an einer der Steckblechwicklung zugewandten Mantelfläche ausgebildet sein, um eine Verbindung mit dem mindesten einen Eingriffselement zu gewährleisten. Vorzugsweise ist das Rastelement elastisch verformbar ausgebildet. Diese Ausführungsform ermöglicht ein einfaches und kostengünstiges Zusammensetzen der Transformatorbestandteile. Ein weiterer Vorteil besteht darin, dass die Steckverbindung gleichzeitig der mechanischen Fixierung dient, so dass ein zusätzliches Kleben, Klammem, Verschrauben oder dergleichen nicht erforderlich ist.In further embodiments of the present invention, the plug-in plates on at least one end of a side leg on a projection for an electrical connection with a connecting element for plug-in on. Furthermore, the baffles on the outer periphery of at least one side leg a projection for an electrical connection with a connecting element for plug-in sheets. It is also possible to form recesses for the same purpose instead of protrusions. Furthermore, the plug-in plates are formed on at least one inner side of the side leg, with an engagement element which creates a locking connection with at least one latching element of the bobbin. In this case, the at least one latching element of the bobbin may be formed on one of the tab sheet winding facing surface to ensure a connection with the at least one engagement element. Preferably, the locking element is formed elastically deformable. This embodiment enables a simple and inexpensive assembly of the transformer components. Another advantage is that the connector simultaneously serves the mechanical fixation, so that an additional gluing, Klammem, screwing or the like is not required.
In einer weiteren Ausführungsform der vorliegenden Erfindung sind mindestens jeweils zwei Steckbleche mit Hilfe des Verbindungselements für Steckbleche miteinander verschaltet. Diese Verbindungselemente können verlötet oder verschweißt sein oder es können andere Arten der elektrischen Verbindung verwendet werden.In a further embodiment of the present invention, at least two plug-in metal sheets are connected to one another with the aid of the connecting element for plug-in sheets. These connectors may be soldered or welded or other types of electrical connection may be used.
In einer weiteren Ausbildung ist das induktive Bauteil mit Kunststoff umspritzt oder vergossen. Dadurch wird unter anderem eine zusätzliche Verbesserung der Spannungsfestigkeit und der Kriech- und Luftstrecken gewährleistet. Diese Ausführungsform gewährleistet die Ausbildung eines kompakten, zuverlässigen Bauelements. Wegen der vollständigen Einbettung in die Vergussmasse, werden die einzelnen Transformatorkomponenten fixiert und stabilisiert. Durch die Verwendung einer Umspritzung können entweder die überstehenden Enden des Spulenkörpers verkleinert werden oder die Steckblechwicklung breiter ausgebildet werden, und somit die Performance erhöhen. Das Spritzgussverfahren selbst erweist sich als besonders einfach, da das Kupfer schon durch den Spulenkörper, der vorzugsweise aus Kunststoff hergestellt ist, fixiert ist. Ein weiterer Vorteil des Umspritzens des erfindungsgemäßen Transformators ist der Schutz vor Feuchtigkeit, Temperaturschwankungen und Korrosion. Des Weiteren ist die Verwendung eines Spritzgussverfahrens kostengünstiger als die Fertigung eines Gehäuses, und aufgrund der oft sehr klein ausgebildeten Bauräume auch platzsparend.In a further embodiment, the inductive component is encapsulated or encapsulated with plastic. This ensures, among other things, an additional improvement of the dielectric strength and the creepage distances and clearances. This embodiment ensures the formation of a compact, reliable device. Due to the complete embedment in the potting compound, the individual transformer components are fixed and stabilized. By using an encapsulation either the protruding ends of the bobbin can be reduced or the baffle winding can be made wider, and thus increase the performance. The injection molding itself proves to be particularly simple, since the copper is already fixed by the bobbin, which is preferably made of plastic. Another advantage of the extrusion coating of the transformer according to the invention is the protection against moisture, temperature fluctuations and corrosion. Furthermore, the use of an injection molding process is cheaper than the production of a housing, and also saves space due to the often very small space designed.
Die Ausführungsform gemäß Anspruch 13 wird vorzugsweise zum Erzeugen von kleinen Übersetzungsverhältnissen verwendet. Hierbei werden die beiden Spulen abwechselnd angeordnet, wodurch die Streuinduktivität verringert wird und höhere Betriebsfrequenzen beim Betrieb des Transformators möglich sind. Des Weiteren wird mit dieser Ausführungsform ein kompaktes, induktives Bauelement mit geringer Bauhöhe verwirklicht. Die Verwendung einer Steckblechwicklung hat den Vorteil der hohen Stromeffektivität, wobei die Verschachtelung zu geringen elektrischen und magnetischen Verlusten führt. Somit wird ein Transformator bereitgestellt, der auf hohe Temperaturen bzw. Temperaturschwankungen wenig kritisch reagiert und gut wärmeleitend ist. Der Transformator der vorliegenden Erfindung weist eine geringe Verlustleistung, einen hohen Wirkungsgrad, und eine konstruktionsbedingte, reproduzierbare Spannungsfestigkeit auf.The embodiment according to claim 13 is preferably used for generating small gear ratios. In this case, the two coils are arranged alternately, whereby the stray inductance is reduced and higher operating frequencies during operation of the transformer are possible. Furthermore, this embodiment realizes a compact, low-profile, inductive component. The use of a tab coil has the advantage of high current efficiency, with nesting resulting in low electrical and magnetic losses. Thus, a transformer is provided which responds to high temperatures or temperature fluctuations little critical and is good heat conducting. The transformer of the present invention has a low power dissipation, a high efficiency, and a design-related, reproducible withstand voltage.
In einer weiteren Ausbildung der vorliegenden Erfindung weisen die Taschen des Spulenkörpers eine größere Tiefe als die Steckblechwicklung auf. Auch in diesem Fall sorgt die Geometrie des Spulenkörpers bzw. der Taschen für eine gute Isolation, wodurch eine hohe Durchschlagsfestigkeit gewährleistet und eine zusätzliche Isolation entfallen kann. Durch die tiefer ausgebildeten Taschen wird eine gut definierte Trennung der Primär- und Sekundärspule sowie von anderen Komponenten erreicht, wodurch es möglich ist, Kriech- und Luftstreckendefiniert konstruktiv festzulegen. Dies erweist sich insbesondere im Hinblick auf die Verwendung eines E-Kerns als vorteilhaft, da der Spulenkörper keine den E-Kern umschließende innere Mantelfläche aufweist, wodurch Spannungsdurchschläge über kurze Luftstrecken erfolgen könnten. Durch die Ausbildung der tiefen Taschen kann das Auftreten von Spannungsdurchschlägen verringert werden.In a further embodiment of the present invention, the pockets of the bobbin have a greater depth than the dummy plate winding. Also in this case, the geometry of the bobbin or the pockets ensures good insulation, which ensures a high dielectric strength and can be dispensed with an additional insulation. The deeper pockets provide a well-defined separation of the primary and secondary coils as well as other components, making it possible to constructively define creepage and airway defined. This proves to be advantageous, in particular with regard to the use of an E-core, since the coil body has no inner lateral surface enclosing the E-core, as a result of which voltage breakdowns could occur over short air gaps. By forming the deep pockets, the occurrence of voltage breakdowns can be reduced.
In einer weiteren Ausführungsform umfassen die Steckblechwicklungen der Primärspule und/oder der Sekundärspule einzelne Windungen, die abschnittweise miteinander verbunden sind, so dass die jeweiligen Spulen mindestens zwei Windungen aufweisen. Durch die Anwendung dieser Ausführungsform sind zumindest abschnittsweise einzelne Windungen der Wicklung elektrisch kontaktiert. Durch die Verschachtelung von mindestens zwei Windungen verbessert sich die Kopplung unter den Wicklungen. Da diese Bleche ebenfalls vorzugsweise mittels eines Stanzverfahrens fertigbar sind, können sie serienmäßig, und somit kostengünstig, hergestellt werden.In a further embodiment, the plug-in windings of the primary coil and / or the secondary coil comprise individual windings, which are connected to each other in sections, so that the respective coils have at least two windings. By using this embodiment, individual turns of the winding are electrically contacted at least in sections. The nesting of at least two turns improves the coupling under the windings. Since these sheets are also preferably manufacturable by means of a stamping process, they can be produced in series, and thus cost-effectively.
In weiteren Ausbildungen der vorliegenden Erfindung weisen die Steckbleche an dem Außenumfang von mindestens einem Seitenschenkel einen Vorsprung für eine elektrische Verbindung mit einem Verbindungselement für Steckbleche auf. Auch können die Steckbleche an dem Außenumfang von mindestens einem Seitenschenkel eine Vertiefung anstelle eines Vorsprungs aufweisen. Des Weiteren können die Steckbleche jedoch an mindestens einer Außenseite des Seitenschenkels mit einem Eingriffselement ausgebildet sein, das eine Verbindung mit mindestens einem Rastelement des Spulenkörpers gewährleistet oder die Steckbleche weisen an mindestens einem Ende eines Seitenschenkels einen Vorsprung oder eine Vertiefung für eine elektrische Verbindung mit dem Verbindungselement für Steckbleche auf. Weiterhin kann der das mindestens eine Rastelement des Spulenkörpers an einer der Steckblechwicklung zugewandten Mantelfläche ausgebildet sein, um eine Verbindung mit dem mindestens einen Eingriffselement zu gewährleisten, wobei das mindestens eine Rastelement elastisch verformbar ausgebildet sein kann.In further embodiments of the present invention, the plug-in plates on the outer circumference of at least one side leg on a projection for an electrical connection with a connecting element for plug-in plates. Also, the baffles may have a recess instead of a projection on the outer periphery of at least one side leg. Furthermore, however, the baffles may be formed on at least one outer side of the side leg with an engagement member which ensures a connection with at least one locking element of the bobbin or the baffles have at least one end of a side leg a projection or a recess for electrical connection with the connecting element for mounting plates on. Furthermore, the at least one latching element of the bobbin may be formed on a jacket surface facing the plug-in sheet winding in order to ensure a connection with the at least one engagement element, wherein the at least one latching element may be formed elastically deformable.
In einer weiteren bevorzugten Ausführungsform sind die Anschlussstellen des induktiven Bauteils mit Kunststoffen umspritzt oder vergossen. Dadurch ergeben sich dieselben zuvor erwähnten Vorteile.In a further preferred embodiment, the connection points of the inductive component are encapsulated or encapsulated with plastics. This results in the same advantages mentioned above.
In einer noch weiteren Ausführungsform ist an einem Ende des Spulenkörpers und an einem Ende der Steckbleche ein Zentriermittel ausgebildet, um ein leichteres Einführen der Stechbleche in den Spulenkörper mit kleinen Toleranzen zu gewährleisten. Kombinationen einzelner oder mehrerer der vorgenannten Ausführungsformen oder Ausbildungen der Erfindung sind ebenfalls Gegenstand der Erfindung.In yet another embodiment, a centering means is formed at one end of the bobbin and at one end of the baffles to ensure easier insertion of the lancing plates into the bobbin with small tolerances. Combinations of one or more of the aforementioned embodiments or embodiments of the invention are also the subject of the invention.
Weitere vorteilhafte Ausführungsformen der vorliegenden Erfindung sind in den beigefügten Schutzansprüche angegeben. In der folgenden Beschreibung sind mit Bezug zu den begleitenden Zeichnungen weitere Ausführungsbeispiele ausführlicher beschrieben. In den beiliegenden Zeichnungen zeigen:
- Fig. 1a
- eine dreidimensionale Ansicht einer ersten Ausführungsform, wobei mindes- tens eine der Spulen eine Steckblechwicklung aufweist;
- Fig. 1b
- eine dreidimensionale Ansicht der Ausführungsform aus
Fig. 1a mit einem magnetischen E-Kern; - Fig. 2a
- schematische Darstellungen eines Steckblechs mit einem offenen Ende, wo- bei die Steckbleche an ihrem Außenumfang oder Innenumfang mindestens einen Vorsprung oder eine Vertiefung aufweisen;
- Fig. 2b
- eine schematische Darstellung des Steckblechs mit einem offenen Ende, wo- bei die Steckbleche an mindestens einem Ende eines Seitenschenkels einen Vorsprung oder eine Vertiefung aufweisen;
- Fig. 2c
- eine schematische Darstellung des Steckblechs mit einem offenen Ende, wo- bei ein Vorsprung oder eine Vertiefung an einem Ende eines Seitenschenkels ausgebildet ist, und ein Vorsprung oder eine Vertiefung an der Außenseite des Seitenschenkels;
- Fig. 2d
- schematische Darstellungen des Steckblechs, wobei das Steckblech an min- destens einer Innenseite oder einer Außenseite des Seitenschenkels mit ei- nem Eingriffselement ausgebildet ist;
- Fig. 3a
- eine dreidimensionale Ansicht einer zweiten Ausführungsform der vorliegen- den Erfindung, wobei die Primärspule und die Sekundärspule eine Steck- blechwicklung und der Spulenkörper mehrere Taschen zur Aufnahme der Steckblechwicklungen aufweisen;
- Fig. 3b
- eine dreidimensionale Ansicht der zweiten Ausführungsform mit einem mag- netischen E-Kem;
- Fig. 3c
- eine dreidimensionale Ansicht der zweiten Ausführungsform, wobei die Ver- bindungselemente der Steckbleche des induktiven Bauteils mit Kunststoff um- spritzt oder vergossen sind.
- Fig. 1a
- a three-dimensional view of a first embodiment, wherein at least one of the coils has a dummy plate winding;
- Fig. 1b
- a three-dimensional view of the embodiment
Fig. 1a with a magnetic E-core; - Fig. 2a
- schematic representations of a plug-in plate having an open end, wherein the baffles have at least one projection or a recess on its outer circumference or inner circumference;
- Fig. 2b
- a schematic representation of the plug-in plate with an open end, wherein the plug-in plates have at least one end of a side leg a projection or a recess;
- Fig. 2c
- a schematic representation of the plug-in plate with an open end, wherein a projection or a recess is formed at one end of a side leg, and a projection or a recess on the outside of the side leg;
- Fig. 2d
- schematic representations of the plug-in plate, wherein the plug-in plate is formed on at least one inner side or an outer side of the side leg with an engagement element;
- Fig. 3a
- 3 shows a three-dimensional view of a second embodiment of the present invention, wherein the primary coil and the secondary coil have a plug-in connection. sheet winding and the bobbin have a plurality of pockets for receiving the tab windings;
- Fig. 3b
- a three-dimensional view of the second embodiment with a magnetic E-Kem;
- Fig. 3c
- a three-dimensional view of the second embodiment, wherein the connecting elements of the plug-in plates of the inductive component with plastic injected or encapsulated.
In einer bevorzugten Ausführungsform weist der Spulenkörper 101 und die Steckblechwicklung 104 ein aufeinander abgestimmtes Verbindungselement auf. In der gezeigten Ausführung sind die zwei parallel laufenden Wandungen 106 mit dem Verbindungselement in Form einer Brücke 107 versehen, wobei die Brücke 107 fest mit den beiden Wandungen 106 verbunden ist. Die Brücke 107 dient als Einschiebschutz am Spulenkörper 101, um eine Verwechslung beim steckbaren Verbinden der Steckblechwicklung 104 und dem Spulenkörper 101 zu verhindern. Vorzugsweise ist die Brücke 107 an den Seitenwänden zwischen den zwei parallel laufenden Wandungen 106 angebracht. In anderen Ausführungsformen kann die Brücke 107 auch abnehmbar mit den Wandungen 106 verbunden sein. Des Weiteren ist es möglich, den Transformator 100 so auszubilden, dass die Brücke 107 am unteren Ende zwischen jeweils zwei parallel laufenden Wandungen angebracht ist. Die Brücke 107 bietet den Vorteil eines verschlusssicheren Aufbaus, und dass der Spulenkörper 101 und die Steckblechwicklung 104 ohne zusätzliches Verbindungsmaterial miteinander verbunden werden können, wodurch es möglich ist, die gewünschte kompakte Bauweise zu optimieren. Im Allgemeinen umfasst die Steckblechwicklung 104 einzelne Bleche, die ein offenes Ende aufweisen. Vorzugsweise sind diese Bleche aus Kupfer hergestellt. Die Bleche der Steckblechwicklung 104 werden im Allgemeinen aus Kostengründen gestanzt, wodurch sich der zusätzliche Vorteil einer serienmäßigen Fertigung ergibt. Aufgrund der hohen Reproduzierbarkeit ergibt sich daraus auch der Vorteil der Unabhängigkeit hinsichtlich der Produktionsstätte und des Herstellers. Da auch der Spulenkörper 101 auf kostengünstige und schnelle Art und Weise mittels eines Spritzgussverfahrens hergestellt wird, ergeben sich für den Spulenkörper 101 dieselben Vorteile.In a preferred embodiment, the
In einer Ausführungsform ist der Spulenkörper 101 mit einer größeren Tiefe als die Steckblechwicklung 104 ausgebildet. Diese Geometrie des Spulenkörpers 101 sorgt hierbei für eine gute Isolation, so dass zusätzliche Isolationsmaterialien entfallen können. Die ausgebildete Tiefe sorgt für eine gute Trennung der ersten und der zweiten Spule sowie von anderen Komponenten, um so definierte Kriech- und Luftstrecken festzulegen. Des Weiteren sind in dieser Ausführungsform jeweils zwei Bleche der Steckblechwicklung 104 mit Hilfe von leitenden Verbindungselementen für die Steckbleche 108 miteinander verschaltet. In dieser Ausführungsform sind die Verbindungselemente für die Steckbleche 108 am hinteren Ende und an der Seite des Spulenkörpers 101 angebracht, wobei diese flexible Geometrie vorteilhafterweise dazu dient, dass der Transformator 100 in kleine und verschachtelte Bauräume einsetzbar ist. Die auf der Steckblechwicklung 104 ausgebildeten Vorsprünge oder Vertiefungen 110 dienen der elektrischen Verbindung mit den Verbindungselementen für die Steckbleche 108. Die Vorsprünge oder Vertiefungen 110 können jedoch auch mit den Verbindungselementen für die Steckbleche 108 gesteckt, geklebt, geklammert, geschweißt oder verschraubt werden. Das obere Ende der Verbindungselemente für die Steckbleche 108 dient als Anschluss 109, der mit Bereichen versehen ist, mit deren Hilfe beispielsweise eine einfachere Anbringung einer Leiterdrahtes ermöglicht wird.In one embodiment, the
Die
Des Weiteren sorgt die Geometrie des Spulenkörpers 301 für eine sehr gute Isolation, so dass zusätzliche Isolationsmaterialien entfallen können. Der Spulenkörper 301 ist, wie in der vorherigen Ausführungsform, mittels eines Spritzgussverfahrens oder Umspritzungsverfahrens hergestellt, und weist demzufolge dieselben zuvor beschriebenen Vorteile auf. Die Steckblechwicklungen 304 der Primärspule 302 und der Sekundärspule 303 sind aus einzelnen Steckblechen gebildet, die ein offenes Ende aufweisen.Furthermore, the geometry of the
In einer Ausführungsform können die Steckblechwicklungen 304 der Primärspule 302 und/oder der Sekundärspule 303 einzelne Windungen, die abschnittweise miteinander verbunden sind, umfassen, so dass die jeweiligen Spulen mindestens zwei Windungen aufweisen. Durch die Anwendung dieser Ausführungsform sind zumindest abschnittsweise einzelne Windungen der Wicklung elektrisch kontaktiert. Durch die Verschachtelung der mindestens zwei Windungen verbessert sich die Kopplung unter den Wicklungen. Die einzelnen Steckbleche sowie die abschnittsweise miteinander verbundenen Steckbleche sind vorzugsweise aus Kupfer hergestellt.In one embodiment, the
Die in
Claims (15)
- Transformer (100), comprising a coil body (101) for accommodating a first coil (102) and a second coil (103), wherein
at least one of the coils has a plug-in winding (104); which plug-in winding comprises one or more turns disposed in a stacked arrangement, and at least two spaces are provided between the turns of the plug-in winding for accommodating the second coil;
characterised in that
the coil body and the plug-in winding respectively have a mutually adapted connecting element, and two walls (106) extending parallel with one another incorporating the connecting element in the form of a bridge (107) are respectively provided, which prevents a mix-up when the plug-in winding is being connected to the coil body in a plug-in arrangement. - Transformer as claimed in claim 1, wherein the coil body has a greater depth than the plug-in winding.
- Transformer as claimed in claim 1, wherein the bridge is mounted on the side walls between the two parallel walls.
- Transformer as claimed in claim 1, wherein the plug-in winding comprises individual plug-in plates which have an open end.
- Transformer as claimed in claim 4, wherein the plug-in plates have a cut-out on at least one end of a side arm for an electrical connection to a connecting element for plug-in plates.
- Transformer as claimed in claim 4, wherein the plug-in plates have a projection on at least one end of a side arm for an electrical connection to a connecting element for plug-in plates.
- Transformer as claimed in claim 1, wherein the plug-in plates have a cut-out on an external circumference of at least one side arm for an electrical connection to the connecting element for plug-in plates.
- Transformer as claimed in claim 1, wherein the plug-in plates have a projection on an external circumference of at least one side arm for an electrical connection to the connecting element for plug-in plates.
- Transformer as claimed in claim 1, wherein the plug-in plates are provided with a locating element on at least one internal face of the side arm, which establishes a locking connection with at least one catch element of the coil body.
- Transformer as claimed in claim 9, wherein the at least one catch element of the coil body is provided on a casing surface facing the plug-in winding in order to ensure a connection to the at least one locating element.
- Transformer as claimed in claim 10, wherein the at least one catch element is of an elastically deformable design.
- Transformer as claimed in claim 1, wherein at least two plug-in plates are connected to one another respectively with the aid of the connecting element for plug-in plates.
- Transformer (300) comprising a coil body for accommodating a primary coil (302) and a secondary coil (303) as well as a magnetic core (312), wherein
the magnetic core is connected to the coil body so that the coil body comprises a middle arm of the core;
the primary coil and the secondary coil have a plug-in winding (304) comprising several turns;
characterised in that
the coil body is provided with several pockets (305) for accommodating the plug-in windings, which are disposed one above the other in a stacked arrangement so that the pockets form a wall (306) between the turns which extends parallel with the plug-in windings, and
the coil body does not have the inner casing surface surrounding the middle arm of the magnetic core. - Transformer as claimed in claim 13, wherein the pockets of the coil body are of a greater depth than the plug-in winding.
- Transformer as claimed in claim 13, wherein the plug-in windings of the primary coil and the secondary coil comprise individual plug-in plates which have an open end.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE202006013658U DE202006013658U1 (en) | 2006-09-06 | 2006-09-06 | Transformer with plug-in winding |
PCT/EP2007/007787 WO2008028663A1 (en) | 2006-09-06 | 2007-09-06 | Transformer with a plug-in laminate winding |
Publications (2)
Publication Number | Publication Date |
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EP2095382A1 EP2095382A1 (en) | 2009-09-02 |
EP2095382B1 true EP2095382B1 (en) | 2011-08-17 |
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EP07802183A Not-in-force EP2095382B1 (en) | 2006-09-06 | 2007-09-06 | Transformer with a plug-in laminate winding |
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EP (1) | EP2095382B1 (en) |
AT (1) | ATE521072T1 (en) |
DE (1) | DE202006013658U1 (en) |
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DE102011075707A1 (en) * | 2011-05-12 | 2012-11-15 | SUMIDA Components & Modules GmbH | Transformer with laminated winding |
DE202011051721U1 (en) * | 2011-10-21 | 2011-11-07 | SUMIDA Components & Modules GmbH | High voltage transformer and wound bobbin for ignition modules with pins as part of the primary winding |
DE102018221125A1 (en) * | 2018-12-06 | 2020-06-10 | Zf Friedrichshafen Ag | Spacers for a planar transformer, planar transformer with the spacer, current doubler arrangement with the planar transformer and method for mounting the planar transformer |
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US5010314A (en) * | 1990-03-30 | 1991-04-23 | Multisource Technology Corp. | Low-profile planar transformer for use in off-line switching power supplies |
JP2531897B2 (en) * | 1991-05-15 | 1996-09-04 | インターナショナル・ビジネス・マシーンズ・コーポレイション | Plane transformer |
DE9115298U1 (en) * | 1991-12-10 | 1992-02-13 | Meßelektronik Dresden GmbH i.Ges.Vollstr., 01099 Dresden | Foil power transformers, especially for electronic converters |
ES2128827T3 (en) * | 1996-07-17 | 1999-05-16 | Magnetek Spa | ULTRA-FLAT MAGNETIC DEVICE FOR ELECTRONIC CIRCUITS. |
US6087922A (en) * | 1998-03-04 | 2000-07-11 | Astec International Limited | Folded foil transformer construction |
IL139714A0 (en) * | 2000-11-15 | 2002-02-10 | Payton Planar Magnetics Ltd | A bobbin for hybrid coils in planar magnetic components |
DE10148133A1 (en) * | 2001-09-28 | 2003-04-24 | Ascom Energy Systems Ag Bern | Flat transformer with inserted secondary windings |
ATE491214T1 (en) * | 2002-10-01 | 2010-12-15 | Det Int Holding Ltd | BOBBIN |
-
2006
- 2006-09-06 DE DE202006013658U patent/DE202006013658U1/en not_active Expired - Lifetime
-
2007
- 2007-09-06 ES ES07802183T patent/ES2368205T3/en active Active
- 2007-09-06 AT AT07802183T patent/ATE521072T1/en active
- 2007-09-06 EP EP07802183A patent/EP2095382B1/en not_active Not-in-force
- 2007-09-06 WO PCT/EP2007/007787 patent/WO2008028663A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
ES2368205T3 (en) | 2011-11-15 |
WO2008028663A1 (en) | 2008-03-13 |
WO2008028663A8 (en) | 2009-07-16 |
EP2095382A1 (en) | 2009-09-02 |
DE202006013658U1 (en) | 2008-01-24 |
ATE521072T1 (en) | 2011-09-15 |
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