WO2008014734A1 - Machine housing for an electrical machine - Google Patents
Machine housing for an electrical machine Download PDFInfo
- Publication number
- WO2008014734A1 WO2008014734A1 PCT/DE2007/001013 DE2007001013W WO2008014734A1 WO 2008014734 A1 WO2008014734 A1 WO 2008014734A1 DE 2007001013 W DE2007001013 W DE 2007001013W WO 2008014734 A1 WO2008014734 A1 WO 2008014734A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- machine housing
- water jacket
- machine
- housing
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
Definitions
- the invention relates to a machine housing of an electrical machine.
- the invention further relates to a method for producing such a machine housing.
- the stator of electric machines such as electric motors and generators is generally understood to mean the fixed part of the electric machine, while the rotor is the moving part of the machine and is mounted inside the stator.
- the stator usually has one or more windings through which a magnetic field is generated at the motor through the electrical current flowing therethrough, whose effect causes the movement of the rotor over the air gap between the stator and rotor.
- electrical current is induced in the winding by the magnetic field rotating with the rotor.
- both functions can be used or integrated by an appropriate design in an electric machine.
- Such applications are usually realized among other things in regenerative braking and drive systems in motor vehicles by the brake energy is applied with the electric machine, this is cached in a memory and is used via the electric machine again to drive the motor vehicle.
- stator development is generally in a stator lamination, which is composed of so-called electric sheet, wrapped or guided in this in corresponding grooves.
- the laminated stator core itself is positioned and fastened to the winding inside the stator or machine housing.
- the stator lamination is usually shrunk into the machine housing by the machine housing is heated to about 200 0 C. Due to the subsequent cooling process and the concomitant reduction in cross-section of the stator housing, the stator lamination stack is fixed in the stator housing.
- the stator is suspended in the operation temperature range, in general, a large tem- of about -40 0 C to about 160 ° C. In some applications, the stator is therefore surrounded by a water channel to cool it with water.
- modules of this power electronics can be mounted on the circumference of the stator.
- corresponding recesses may be provided for access to the stator in the region of the modules on the machine housing.
- the machine housing is usually made of steel, because steel has a similar coefficient of thermal expansion as the laminated stator core, so that the laminated stator core remains fixed in the machine housing at all operating temperatures.
- a problem in the manufacture of the machine housing is that the manufacture of the machine housing made of steel is comparatively expensive and therefore expensive.
- a machine housing is usually cast first and then with various processing methods, such as For example, milling, drilling, welding and turning further processed.
- various processing methods such as For example, milling, drilling, welding and turning further processed.
- Particularly complicated and thus costly is the realization of the various devices for attachments that are needed for example for the power electronics or the connection of a transmission.
- For the realization of a cooling channel also additional attachments and methods are needed, which incurs additional costs.
- the invention is therefore based on the object to provide a machine housing that can be produced as inexpensively.
- a machine housing is composed of a stator carrier arranged on the inside and a water jacket arranged on the outside, wherein a stator carrier and a water jacket are composed of different materials and are connected to one another via a number of friction stir welding connections running in the circumferential direction.
- the invention is based on the consideration that in principle materials must be used for a more cost-effective production of a machine housing, which are easier and thus cheaper to process than steel.
- the problem with such materials, such as other metals, however, is that even with a mathematically correct shrinkage of the laminated stator core due to the different Temperaturausdehnungskoeffizien- th the stator lamination would solve when heated or can not be fixed with sufficient stability.
- the invention assumes that the problem of different thermal expansion coefficients could only be overcome by the division of the machine housing into different components. For this would have a component be designed such that a sufficient attachment function can be achieved. On the other hand, a second component would have to allow a cheaper production by their nature. For a combination of both functions, the two components would have to be connected together accordingly.
- the alignment of the components on the attachment function and manufacturing function can be achieved essentially by the choice of different materials or metals.
- the attachment function is fulfilled by a stator carrier which is positioned on the inside and in which a stator lamination stack can be shrinked. On the outside, a water jacket is positioned, which is aligned by its material for cost-effective production.
- a friction stir welding method is used according to the invention because different metals can be welded together with it.
- a Rhackreibsch spall runs in the circumferential direction of the machine housing.
- several circumferential welds can be used.
- a circumferential weld may be sufficient if a stator is additionally fixed by a stop on the water jacket.
- a stator carrier which has a circumferential spring on the end side, can be pushed into the water jacket as far as it will go and welded to the water jacket in the area of the front side.
- the invention relates to a machine housing of an engine and / or a generator.
- a machine housing between the water jacket and the stator carrier advantageously has a water channel.
- a water channel is bounded on the inside by the stator and on the outside by the water jacket.
- a corresponding depression can be provided in the water jacket on the inside while the water channel is delimited inward by the cylindrical stator carrier.
- this is suitably made of steel. Due to the similar coefficients of thermal expansion of steel and a stator core, the strength at different operating temperatures is not affected.
- stator carrier In order to ensure a simple and inexpensive production of the stator carrier, this is preferably composed of a deep-drawn part.
- Water jacket expediently composed of a die-cast part. After the casting process, a die-cast part can be further processed with subsequent machining processes.
- a water jacket For receiving modules of the power electronics for control, a water jacket preferably has a number of recesses. A module of the power electronics is sunk during assembly in a recess and bolted to the water jacket. For a seal of the water channel can be arranged between the module of the power electronics and the water jacket a seal.
- a motor and / or generator on a machine housing described above.
- a stator support and a water jacket are suitably welded to one another by friction stir welding.
- the advantage of the invention is the ability to produce a machine housing of an electrical machine cost. This can be achieved in particular by the division of the In this way, it is possible to ensure that the components of the components are selected according to their requirements.
- Aluminum can be used for the water jacket so that it can be manufactured very inexpensively, because aluminum can be machined comparatively easily. Aluminum also has the advantage that it is much lighter than steel, reducing the overall weight of the engine or generator.
- An additional advantage of the invention is that it is very easy to realize a water channel for cooling the stator by the connection of stator and water jacket and this no additional effort is necessary.
- FIG. 1 shows a machine housing 3 and a method for producing a machine housing 3,
- FIG. 2 shows a water jacket 2 of a machine housing 3 according to FIG. 1,
- FIG. 3 shows a stator carrier 1 of a machine housing 3
- FIG. 1 A first figure.
- FIG. 5 shows in section a housing wall of a machine housing 3 according to FIG. 1.
- Figure 1 shows a machine housing 3 of an electric motor, not shown.
- the machine housing 3 is designed in particular for the most cost-effective production possible.
- the machine housing 3 is composed of a cylindrical stator 1 and a surrounding water jacket 2 together.
- FIG. 1 shows the two components before assembly or as they are pushed into one another become.
- the stator 1 and the water jacket 2 can be made of different materials.
- the stator 1 is made of steel and the water jacket 2 made of aluminum.
- FIG. 1 schematically shows a friction stir welding device 18 with which the internal one
- Stator is welded to the outer water jacket.
- friction stir welding a rotating pin protruding from a rotating shoulder is pushed with great force into the butt joint of stator support 1 and water jacket 1 and moved along the contact line. The materials are heated by the friction between the shoulder and the two workpieces and stirred by the rotation of the pin, so that connect stator 1 and water jacket 2 in a forming process.
- the water jacket 2 which is shown in Figure 2 is made of a die-cast part. For inclusion in a bell housing this has a number of mounting flanges 14.
- a number of power electronics carriers 12 are mounted on the circumference of the water jacket 2 for the attachment of modules of the power electronics for controlling the motor. The modules are introduced during assembly in the recesses provided for this purpose 6 and screwed to the power electronics carriers 12. This is for the sealing of the water jacket 2 between
- Line electronics carrier 12 and module positioned a seal.
- the cylindrical stator carrier 1, which is shown in FIG. 3, is made smooth on the inside for receiving the stator lamination stack of the electric motor, so that the stator lamination stack is inserted into this or into the motor housing 3. can be shrinking.
- the stator 1 consists of a deep-drawn part.
- the stator 1 In order to connect the stator 1 only with a weld with the water jacket 2 while ensuring adequate sealing of the water channel 4, resulting from the gap between the stator 1 and water jacket 2, the stator 1 has a circumferential spring end. When mounting stator support 1 and water jacket 2, the stator support 1 is pushed into the water container 2 as far as it will go against the spring and welded in circular fashion to the friction stir welding device 18 on the other side.
- FIG. 4 shows for better clarity, the machine housing 4 in section and Figure 5 in section the housing wall of the machine housing 3.
- the space between the stator 1 and the water jacket 2, the water channel 4, which for the cooling of the machine housing 3 with Water is used.
- FIG. 5 shows that the water channel 4 is additionally sealed with a surrounding seal 10 between the stator carrier 1 and the water jacket 2.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
Maschinengehäuse einer elektrischen MaschineMachine housing of an electrical machine
BesehreibungBesehreibung
Die Erfindung betrifft ein Maschinengehäuse einer elektrischen Maschine. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines derartigen Maschinengehäuses .The invention relates to a machine housing of an electrical machine. The invention further relates to a method for producing such a machine housing.
Unter dem Stator von elektrischen Maschinen wie elektrischen Motoren und Generatoren versteht man im allgemeinen den fest stehenden Teil der elektrischen Maschine, während der Rotor den sich bewegenden Teil der Maschine darstellt und innerhalb des Stators angeordnet bzw. gelagert ist. Der Stator weist üblicherweise eine oder mehrere Wicklungen auf, durch die beim Motor durch den hindurch fließenden elektrischen Strom ein magnetisches Feld erzeugt wird, dessen Wirkung über den Luftspalt zwischen Stator und Läufer hinweg die Bewegung des Rotors hervorruft. Beim Generator wird in die Wicklung durch das sich mit dem Rotor drehende Magnetfeld hingegen elektri- scher Strom induziert. Für Anwendung bei denen sowohl eine Funktion als Generator als auch eine Funktion als Motor erwünscht ist, können auch beide Funktionen genutzt werden bzw. durch eine entsprechende Auslegung in einer elektrischen Maschine integriert werden. Derartige Anwendungen werden unter anderem üblicherweise bei regenerativen Brems- und Antriebssystemen bei Kraftfahrzeugen realisiert, indem mit der elektrische Maschine die Bremsenergie aufgebracht wird, diese in einem Speicher zwischengespeichert wird und über die elektrische Maschine wieder zum Antrieb des Kraftfahrzeuges genutzt wird.The stator of electric machines such as electric motors and generators is generally understood to mean the fixed part of the electric machine, while the rotor is the moving part of the machine and is mounted inside the stator. The stator usually has one or more windings through which a magnetic field is generated at the motor through the electrical current flowing therethrough, whose effect causes the movement of the rotor over the air gap between the stator and rotor. In the case of the generator, on the other hand, electrical current is induced in the winding by the magnetic field rotating with the rotor. For applications in which both a function as a generator and a function as a motor is desired, both functions can be used or integrated by an appropriate design in an electric machine. Such applications are usually realized among other things in regenerative braking and drive systems in motor vehicles by the brake energy is applied with the electric machine, this is cached in a memory and is used via the electric machine again to drive the motor vehicle.
Üblicherweise ist bei der Konstruktion derartiger elektrischer Maschinen ein Auslegungsziel einen möglichst hohen Wirkungsgrad zu erreichen. Hierzu wird unter anderem eine mög- liehst gute Ausbreitung des Magnetfeldes im Bereich der Statorwicklungen bzw. eine hohe Permeabilität der Statorwicklung angestrebt. Dazu wird die Statorentwicklung im allgemeinen in ein Statorblechpaket, welches sich aus so genanntem Elektro- blech zusammensetzt, eingewickelt bzw. in diesem in entsprechenden Nuten geführt. Das Statorblechpaket selbst wird mit der Wicklung innerhalb des Stator- bzw. Maschinengehäuses po- sitioniert und befestigt. Dabei ist hierbei aufgrund der Bewegung des Rotors als auch durch die Erwärmung bei Betrieb ein hohe Festigkeit erforderlich. Deshalb wird das Statorblechpaket üblicherweise in das Maschinengehäuse eingeschrumpft, indem das Maschinengehäuse auf etwa 2000C erhitzt wird. Durch den sich anschließenden Abkühlvorgang und die damit einhergehende Querschnittsreduzierung des Statorgehäuses wird das Statorblechpaket im Statorgehäuse fixiert .Usually, in designing such electrical machines, a design goal is to achieve the highest possible efficiency. For this purpose, inter alia, the best possible propagation of the magnetic field in the region of the stator windings or a high permeability of the stator winding is desired. For this purpose, the stator development is generally in a stator lamination, which is composed of so-called electric sheet, wrapped or guided in this in corresponding grooves. The laminated stator core itself is positioned and fastened to the winding inside the stator or machine housing. In this case, due to the movement of the rotor as well as by the heating during operation, a high strength is required. Therefore, the stator lamination is usually shrunk into the machine housing by the machine housing is heated to about 200 0 C. Due to the subsequent cooling process and the concomitant reduction in cross-section of the stator housing, the stator lamination stack is fixed in the stator housing.
Der Stator ist beim Betrieb im allgemeinen einem großen Tem- peraturbereich von etwa -400C bis etwa 160° C ausgesetzt. Bei einigen Anwendungen wird der Stator daher mit einem Wasserkanal umgeben, um diesen mit Wasser zu kühlen.The stator is suspended in the operation temperature range, in general, a large tem- of about -40 0 C to about 160 ° C. In some applications, the stator is therefore surrounded by a water channel to cool it with water.
Für eine Regelung und Steuerung der elektrischen Maschine mit einer Leistungselektronik können Module dieser Leistungselektronik am Umfang des Stators angebracht werden. Für die Steuerungs- und Regelungsfunktionen der Module können für einen Zugang zum Stator im Bereich der Module am Maschinengehäuse entsprechende Aussparungen vorgesehen sein.For control and regulation of the electrical machine with power electronics, modules of this power electronics can be mounted on the circumference of the stator. For the control and regulation functions of the modules corresponding recesses may be provided for access to the stator in the region of the modules on the machine housing.
Damit sich bei den unterschiedlichen Betriebstemperaturen das Statorblechpaket nicht lösen kann, wird das Maschinengehäuse üblicherweise aus Stahl gefertigt, weil Stahl einen ähnlichen Temperaturdehnungskoeffizient wie das Statorblechpaket auf- weist, so dass das Statorblechpaket bei allen Betriebstemperaturen im Maschinengehäuse fixiert bleibt.So that the stator laminated core can not come loose at the different operating temperatures, the machine housing is usually made of steel, because steel has a similar coefficient of thermal expansion as the laminated stator core, so that the laminated stator core remains fixed in the machine housing at all operating temperatures.
Problematisch bei der Herstellung des Maschinengehäuses ist, dass die Fertigung des Maschinengehäuses aus Stahl ver- gleichsweise aufwendig und damit kostenintensiv ist. Dabei wird ein Maschinengehäuse üblicherweise zunächst gegossen und anschließend mit verschiedenen Bearbeitungsverfahren, wie beispielsweise Fräsen, Bohren, Schweißen und Drehen weiterbearbeitet. Besonders aufwendig und damit kostenintensiv ist die Realisierung der verschiedenen Vorrichtungen für Anbauteile, die beispielsweise für die Leistungselektronik oder auch den Anschluss eines Getriebes benötigt werden. Für die Realisierung eines Kühlkanales werden ebenfalls zusätzliche Anbauteile und Verfahren benötigt, wodurch zusätzliche Kosten entstehen.A problem in the manufacture of the machine housing is that the manufacture of the machine housing made of steel is comparatively expensive and therefore expensive. In this case, a machine housing is usually cast first and then with various processing methods, such as For example, milling, drilling, welding and turning further processed. Particularly complicated and thus costly is the realization of the various devices for attachments that are needed for example for the power electronics or the connection of a transmission. For the realization of a cooling channel also additional attachments and methods are needed, which incurs additional costs.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Maschinengehäuse anzugeben, das sich möglichst kostengünstig herstellen lässt.The invention is therefore based on the object to provide a machine housing that can be produced as inexpensively.
Ein Maschinengehäuse setzt sich hierfür erfindungsgemäß aus einem innenseitig angeordneten Statorträger und einem außenseitig angeordneten Wassermantel zusammen, wobei sich ein Statorträger und ein Wassermantel aus unterschiedlichen Materialien zusammensetzen und über eine Anzahl von in Umfangs- richtung verlaufenden Rührreibschweißverbindungen miteinander verbunden sind.For this purpose, a machine housing is composed of a stator carrier arranged on the inside and a water jacket arranged on the outside, wherein a stator carrier and a water jacket are composed of different materials and are connected to one another via a number of friction stir welding connections running in the circumferential direction.
Die Erfindung geht von der Überlegung aus, dass für eine kostengünstigere Herstellung eines Maschinengehäuses grundsätzlich Materialien verwendet werden müssen, die einfacher und damit preisgünstiger zu bearbeiten sind als Stahl. Problematisch an derartigen Materialien wie beispielsweise anderen Metallen ist allerdings, dass selbst bei einer rechnerisch korrekten Einschrumpfung des Statorblechpaketes aufgrund der unterschiedlichen Temperaturausdehnungskoeffizien- ten das Statorblechpaket sich bei einer Erwärmung lösen würde bzw. nicht mit einer ausreichenden Stabilität fixiert werden kann.The invention is based on the consideration that in principle materials must be used for a more cost-effective production of a machine housing, which are easier and thus cheaper to process than steel. The problem with such materials, such as other metals, however, is that even with a mathematically correct shrinkage of the laminated stator core due to the different Temperaturausdehnungskoeffizien- th the stator lamination would solve when heated or can not be fixed with sufficient stability.
Die Erfindung geht auf dieser Überlegung aufbauend davon aus, dass sich die Problematik unterschiedlicher Wärmeausdehnungskoeffizienten nur durch die Teilung des Maschinengehäuses in verschieden Komponenten, umgehen lassen würde. Hierfür müsste eine Komponente derart beschaffen sein, dass sich eine ausreichende Befestigungsfunktion erreichen lässt. Eine zweite Komponente müsste dagegen durch ihre Beschaffenheit eine günstigere Fertigung ermöglichen. Für eine Kombination beider Funktionen müssten die beiden Komponenten entsprechend miteinander verbunden werden. Die Ausrichtung der Komponenten auf die Befestigungsfunktion und Fertigungsfunktion kann im wesentlichen durch die Wahl verschiedener Materialien bzw. Metalle erreicht werden. Die Befestigungsfunktion wird durch einen Statorträger erfüllt, der innenseitig positioniert ist und in dem sich ein Statorblechpaket einschrumpfen lässt. Außenseitig wird ein Wassermantel positioniert, welcher durch sein Material für eine kostengünstige Herstellung ausgerichtet ist. Für eine Verbindung von Statorträger und Wasserman- tel wird erfindungsgemäß ein Rührreibschweißverfahren eingesetzt, weil sich mit diesem verschiedene Metalle miteinander verschweißen lassen. Eine Rührreibschweißverbindung verläuft dabei in Umfangsrichtung des Maschinengehäuses. Dabei können einerseits mehrere umlaufende Schweißnähte verwendet werden. Alternativ kann auch eine umlaufende Schweißnaht ausreichen, wenn ein Statorträger zusätzlich durch einen Anschlag am Wassermantel fixiert ist. Hierzu kann ein Statorträger, der end- seitig eine umlaufende Feder aufweist, bis zum Anschlag in den Wassermantel geschoben werden und im Bereich der Front- seite mit dem Wassermantel verschweißt werden.Based on this consideration, the invention assumes that the problem of different thermal expansion coefficients could only be overcome by the division of the machine housing into different components. For this would have a component be designed such that a sufficient attachment function can be achieved. On the other hand, a second component would have to allow a cheaper production by their nature. For a combination of both functions, the two components would have to be connected together accordingly. The alignment of the components on the attachment function and manufacturing function can be achieved essentially by the choice of different materials or metals. The attachment function is fulfilled by a stator carrier which is positioned on the inside and in which a stator lamination stack can be shrinked. On the outside, a water jacket is positioned, which is aligned by its material for cost-effective production. For a connection of the stator carrier and the water jacket, a friction stir welding method is used according to the invention because different metals can be welded together with it. A Rührreibschweißverbindung runs in the circumferential direction of the machine housing. On the one hand several circumferential welds can be used. Alternatively, a circumferential weld may be sufficient if a stator is additionally fixed by a stop on the water jacket. For this purpose, a stator carrier, which has a circumferential spring on the end side, can be pushed into the water jacket as far as it will go and welded to the water jacket in the area of the front side.
Zweckmäßigerweise betrifft die Erfindung ein Maschinengehäuse eines Motors und/oder eines Generators.Conveniently, the invention relates to a machine housing of an engine and / or a generator.
Für eine Kühlung des Stators bzw. des Maschinengehäuses weist ein Maschinengehäuse zwischen Wassermantel und Statorträger vorteilhafterweise einen Wasserkanal auf. Ein Wasserkanal wird dabei innenseitig durch den Statorträger und außenseitig durch den Wassermantel begrenzt. Hierfür können im Wasserman- tel innenseitig entsprechende Vertiefung vorgesehen sein, während der Wasserkanal nach innen durch den zylindrischen ausgeführten Statorträger abgegrenzt ist. Für eine hohe Festigkeit eines Statorblechpaketes im Statorträger ist dieser zweckmäßigerweise aus Stahl gefertigt. Durch die ähnlichen Wärmeausdehnungskoeffizienten von Stahl und eines Statorblechpaketes wird die Festigkeit bei unterschiedlichen Betriebstemperaturen nicht beeinflusst.For cooling the stator or the machine housing, a machine housing between the water jacket and the stator carrier advantageously has a water channel. A water channel is bounded on the inside by the stator and on the outside by the water jacket. For this purpose, a corresponding depression can be provided in the water jacket on the inside while the water channel is delimited inward by the cylindrical stator carrier. For a high strength of a laminated stator core in the stator, this is suitably made of steel. Due to the similar coefficients of thermal expansion of steel and a stator core, the strength at different operating temperatures is not affected.
Um eine einfache und preisgünstige Fertigung des Statorträgers zu gewährleiste, setzt sich dieser vorzugsweise aus ei- nem Tiefziehteil zusammen.In order to ensure a simple and inexpensive production of the stator carrier, this is preferably composed of a deep-drawn part.
Um einen Wassermantel möglichst kostengünstig zu fertigen, ist dieser vorteilhafterweise aus Aluminium gefertigt.In order to produce a water jacket as inexpensively as possible, this is advantageously made of aluminum.
Für einen kostengünstigen Fertigungsprozess setzt sich einFor a cost-effective manufacturing process begins
Wassermantel zweckmäßigerweise aus einem Druckgussteil zusammen. Nach dem Gießprozess kann ein Druckgussteil mit sich anschließenden Bearbeitungsverfahren weiter bearbeitet werden.Water jacket expediently composed of a die-cast part. After the casting process, a die-cast part can be further processed with subsequent machining processes.
Zur Aufnahme von Modulen der Leistungselektronik zur Steuerung, weist ein Wassermantel vorzugsweise eine Anzahl von Aussparungen auf. Ein Modul der Leistungselektronik wird bei der Montage in einer Aussparung versenkt und mit dem Wassermantel verschraubt. Für eine Abdichtung des Wasserkanals kann dabei zwischen dem Modul der Leistungselektronik und dem Wassermantel eine Dichtung angeordnet werden.For receiving modules of the power electronics for control, a water jacket preferably has a number of recesses. A module of the power electronics is sunk during assembly in a recess and bolted to the water jacket. For a seal of the water channel can be arranged between the module of the power electronics and the water jacket a seal.
Vorteilhafterweise weist ein Motor und/oder Generator ein oben beschriebenes Maschinengehäuse auf.Advantageously, a motor and / or generator on a machine housing described above.
Zur Herstellung eines oben beschriebenen Maschinengehäuses wird zweckmäßigerweise ein Statorträger und ein Wassermantel mit Rührreibschweißen miteinander verschweißt.To produce a machine housing described above, a stator support and a water jacket are suitably welded to one another by friction stir welding.
Der Vorteil der Erfindung besteht in der Möglichkeit ein Maschinengehäuse einer elektrischen Maschine kostengünstig zu fertigen. Dieses kann insbesondere durch die Teilung des Ma- schinengehäuses in zwei Komponenten gewährleistet werden, wodurch sich die Materialien der Komponenten entsprechend ihren Anforderungen wählen lassen. Dabei kann für den Wassermantel Aluminium eingesetzt werden, so dass dieses sehr kostengün- stig gefertigt werden kann, weil sich Aluminium vergleichsweise einfach bearbeiten lässt. Aluminium hat außerdem den Vorteil, dass es wesentlich leichter ist als Stahl, so dass sich das Gesamtgewicht des Motors bzw. des Generators reduziert. Ein zusätzlicher Vorteil der Erfindung ist, dass sich durch die Verbindung von Statorträger und Wassermantel sehr einfach ein Wasserkanal zur Kühlung des Stators realisieren lässt und hierfür kein zusätzlicher Aufwand notwendig ist.The advantage of the invention is the ability to produce a machine housing of an electrical machine cost. This can be achieved in particular by the division of the In this way, it is possible to ensure that the components of the components are selected according to their requirements. Aluminum can be used for the water jacket so that it can be manufactured very inexpensively, because aluminum can be machined comparatively easily. Aluminum also has the advantage that it is much lighter than steel, reducing the overall weight of the engine or generator. An additional advantage of the invention is that it is very easy to realize a water channel for cooling the stator by the connection of stator and water jacket and this no additional effort is necessary.
Die Erfindung wird anhand eines Ausführungsbeispiels näher erläutert. Darin zeigt:The invention will be explained in more detail with reference to an embodiment. It shows:
Figur 1 ein Maschinengehäuse 3 und ein Verfahren zum Herstellen eines Maschinengehäuses 3,1 shows a machine housing 3 and a method for producing a machine housing 3,
Figur 2 einen Wassermantel 2 eines Maschinengehäuses 3 nach Figur 1,FIG. 2 shows a water jacket 2 of a machine housing 3 according to FIG. 1,
Figur 3 einen Statorträger 1 eines Maschinengehäuses 3 nachFIG. 3 shows a stator carrier 1 of a machine housing 3
Figur 1,FIG. 1,
Figur 4 im Schnitt ein Maschinengehäuse 3 nach Figur 1, undFigure 4 in section a machine housing 3 of Figure 1, and
Figur 5 im Schnitt eine Gehäusewand eines Maschinengehäuses 3 nach Figur 1.FIG. 5 shows in section a housing wall of a machine housing 3 according to FIG. 1.
Figur 1 zeigt ein Maschinengehäuse 3 eines nicht näher dargestellten Elektromotors. Das Maschinengehäuse 3 ist insbesondere für eine möglichst kostengünstige Herstellung ausgelegt. Hierfür setzt sich das Maschinengehäuse 3 aus einem zylindrischen Statorträger 1 und einen diesen umgebenden Wassermantel 2 zusammen. Figur 1 zeigt dabei die beiden Komponenten vor dem Zusammenbau bzw. wie sie ineinander geschoben werden. Für die Auslegung einer preisgünstigen Fertigung kann der Statorträger 1 und der Wassermantel 2 aus verschiedenen Materialien gefertigt sein. Im Ausführungsbeispiel ist der Statorträger 1 aus Stahl und der Wassermantel 2 aus Aluminium gefertigt.Figure 1 shows a machine housing 3 of an electric motor, not shown. The machine housing 3 is designed in particular for the most cost-effective production possible. For this purpose, the machine housing 3 is composed of a cylindrical stator 1 and a surrounding water jacket 2 together. FIG. 1 shows the two components before assembly or as they are pushed into one another become. For the design of a low-cost production of the stator 1 and the water jacket 2 can be made of different materials. In the exemplary embodiment, the stator 1 is made of steel and the water jacket 2 made of aluminum.
Um diese Materialien bei der Verbindung der beiden Komponenten miteinander verbinden zu können, wird ein Rührreibscheiß- verfahren verwendet. In Figur 1 ist schematisch ein Rührreib- schweißgerät 18 dargestellt, mit dem der innen liegendeIn order to connect these materials in the connection of the two components together, a Rührreibscheiß- method is used. FIG. 1 schematically shows a friction stir welding device 18 with which the internal one
Statorträger an den außen liegenden Wassermantel angeschweißt wird. Beim Rührreibschweißen wird ein rotierender Stift, der aus einer rotierenden Schulter herausragt, mit großer Kraft in den Stumpfstoß von Statorträger 1 und Wassermantel 1 ge- drückt und entlang der Kontaktlinie bewegt. Die Materialien werden dabei durch die Reibung zwischen Schulter und den beiden Werkstücken erwärmt und durch die Rotation des Stiftes verrührt, so dass sich Statorträger 1 und Wassermantel 2 in einem Umformprozess verbinden.Stator is welded to the outer water jacket. In friction stir welding, a rotating pin protruding from a rotating shoulder is pushed with great force into the butt joint of stator support 1 and water jacket 1 and moved along the contact line. The materials are heated by the friction between the shoulder and the two workpieces and stirred by the rotation of the pin, so that connect stator 1 and water jacket 2 in a forming process.
Für eine preisgünstige Fertigung ist der Wassermantel 2 , der in Figur 2 dargestellt ist aus einem Druckgussteil gefertigt. Zur Aufnahme in eine Getriebeglocke weist dieser eine Anzahl von Befestigungsflansche 14 auf. Außerdem sind für die Befe- stigung von Modulen der Leistungselektronik zur Steuerung des Motors eine Anzahl von Leistungselektronikträgern 12 auf dem Umfang des Wassermantels 2 angebracht. Die Module werden bei der Montage in die hierfür vorgesehenen Aussparungen 6 eingebracht und mit den Leistungselektronikträgern 12 verschraubt. Dabei wird für die Abdichtung des Wassermantels 2 zwischenFor a low-cost production of the water jacket 2, which is shown in Figure 2 is made of a die-cast part. For inclusion in a bell housing this has a number of mounting flanges 14. In addition, a number of power electronics carriers 12 are mounted on the circumference of the water jacket 2 for the attachment of modules of the power electronics for controlling the motor. The modules are introduced during assembly in the recesses provided for this purpose 6 and screwed to the power electronics carriers 12. This is for the sealing of the water jacket 2 between
Leitungselektronikträger 12 und Modul eine Dichtung positioniert .Line electronics carrier 12 and module positioned a seal.
Der zylindrische Statorträger 1, welcher in Figur 3 darge- stellt ist, ist für die Aufnahme des Statorblechpaketes des Elektromotors innenseitig glatt ausgeführt, so dass das Statorblechpaket in diesen bzw. in das Motorgehäuse 3 einge- schrumpft werden kann. Für eine kostengünstige Fertigung besteht der Statorträger 1 aus einem Tiefziehteil . Um den Statorträger 1 nur mit einer Schweißnaht mit dem Wassermantel 2 zu verbinden und dabei eine ausreichende Abdichtung des Wasserkanals 4 zu gewährleisten, der sich aus dem Zwischenraum zwischen Statorträger 1 und Wassermantel 2 ergibt, weist der Statorträger 1 endseitig eine umlaufende Feder auf. Bei der Montage von Statorträger 1 und Wassermantel 2 wird der Statorträger 1 bis zum Anschlag an die Feder in den Wasserbe- hälter 2 geschoben und auf der anderen Seite kreisförmig mit dem Rührreibschweißgerät 18 verschweißt.The cylindrical stator carrier 1, which is shown in FIG. 3, is made smooth on the inside for receiving the stator lamination stack of the electric motor, so that the stator lamination stack is inserted into this or into the motor housing 3. can be shrinking. For a cost-effective production, the stator 1 consists of a deep-drawn part. In order to connect the stator 1 only with a weld with the water jacket 2 while ensuring adequate sealing of the water channel 4, resulting from the gap between the stator 1 and water jacket 2, the stator 1 has a circumferential spring end. When mounting stator support 1 and water jacket 2, the stator support 1 is pushed into the water container 2 as far as it will go against the spring and welded in circular fashion to the friction stir welding device 18 on the other side.
Figur 4 zeigt zur besseren Verdeutlichung das Maschinengehäuse 4 im Schnitt und Figur 5 im Schnitt die Gehäusewand des Maschinengehäuses 3. Wie aus den beiden Figuren hervorgeht bildet der Zwischenraum zwischen Statorträger 1 und dem Wassermantel 2 den Wasserkanal 4, der für die Kühlung des Maschinengehäuses 3 mit Wasser verwendet wird. Aus Figur 5 geht hervor, dass der Wasserkanal 4 noch zusätzlich mit einer um- laufenden Dichtung 10 zwischen Statorträger 1 und Wassermantel 2 abgedichtet ist. Figure 4 shows for better clarity, the machine housing 4 in section and Figure 5 in section the housing wall of the machine housing 3. As can be seen from the two figures, the space between the stator 1 and the water jacket 2, the water channel 4, which for the cooling of the machine housing 3 with Water is used. FIG. 5 shows that the water channel 4 is additionally sealed with a surrounding seal 10 between the stator carrier 1 and the water jacket 2.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Statorträger1 stator carrier
2 Wassermantel 3 Maschinengehäuse 4 Wasserkanal 6 Aussparung 10 Dichtung2 water jacket 3 machine housing 4 water channel 6 recess 10 seal
12 Leistungselektronikträger 14 Befestigungsflansch 18 Rührreibschweißgerät 12 Power electronics carrier 14 Mounting flange 18 Friction stir welding device
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112007001970T DE112007001970A5 (en) | 2006-08-01 | 2007-06-08 | Machine housing of an electrical machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006035697A DE102006035697A1 (en) | 2006-08-01 | 2006-08-01 | Machine housing of an electrical machine |
| DE102006035697.7 | 2006-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008014734A1 true WO2008014734A1 (en) | 2008-02-07 |
Family
ID=38617215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2007/001013 Ceased WO2008014734A1 (en) | 2006-08-01 | 2007-06-08 | Machine housing for an electrical machine |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102006035697A1 (en) |
| WO (1) | WO2008014734A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048734A (en) * | 2015-06-30 | 2015-11-11 | 杭州厚达自动化系统有限公司 | Preassembling mechanism for motor end cap |
| DE102014224022A1 (en) | 2014-11-25 | 2016-05-25 | Zf Friedrichshafen Ag | stator |
| WO2017186381A1 (en) * | 2016-04-28 | 2017-11-02 | Magna powertrain gmbh & co kg | Electrical machine |
| CN109378945A (en) * | 2018-12-10 | 2019-02-22 | 上海伊控动力系统有限公司 | A kind of power drive system of Deep integrating |
| CN114189092A (en) * | 2021-11-20 | 2022-03-15 | 重庆虎溪电机工业有限责任公司 | A new water channel structure and manufacturing method of a water-cooled motor |
| US20220339997A1 (en) * | 2019-09-27 | 2022-10-27 | Robert Bosch Gmbh | Integrated Electric Drive System and Electric Vehicle |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008002491A1 (en) * | 2008-06-18 | 2009-12-31 | Robert Bosch Gmbh | Electric machine for a hybrid vehicle |
| DE102009034235A1 (en) * | 2009-07-22 | 2011-02-17 | Daimler Ag | Stator of a hybrid or electric vehicle, stator carrier |
| DE102012209969A1 (en) | 2012-06-14 | 2013-12-19 | Krones Ag | METHOD FOR CLOSING COOLING CHANNELS OF A DRINK PACKAGING MACHINE |
| DE102013216092A1 (en) * | 2013-08-14 | 2015-02-19 | Continental Automotive Gmbh | Housing for a drive assembly and drive assembly with a housing |
| DE102014106517A1 (en) | 2014-05-09 | 2015-11-12 | Pierburg Gmbh | Exhaust gas turbocharger with a wastegate valve |
| DE102015208299A1 (en) * | 2015-05-05 | 2016-11-10 | Continental Automotive Gmbh | Housing for an electric machine, electric machine |
| DE102015109121A1 (en) * | 2015-06-09 | 2016-12-15 | VOIT Automotive GmbH | A method of manufacturing a liquid cooled electric motor housing and liquid cooled electric motor housing |
| DE102018114246A1 (en) * | 2018-06-14 | 2019-12-19 | Schaufler Tooling GmbH & Co. KG | Housing with at least one cooling water channel and method for its production |
| FR3105892B1 (en) * | 2019-12-31 | 2023-07-14 | Thales Sa | COOLING DEVICE AND MOTOR-VARIATOR |
| DE102022203469A1 (en) * | 2022-04-07 | 2023-10-12 | Valeo Eautomotive Germany Gmbh | Housing of an electrical machine with improved sealing of a cooling channel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631365A2 (en) * | 1993-06-18 | 1994-12-28 | Ebara Corporation | Water cooling jacket and method for forming the same |
| US5998896A (en) * | 1997-11-19 | 1999-12-07 | Reliance Electric Industrial Company | Electric motor having frame adaptable for enclosed and open motor cooling |
| DE10039486A1 (en) * | 2000-08-08 | 2002-02-21 | Drm Druckgus Gmbh | Metal component such as generator housing has two cast parts friction-welded to each other, with channel between them |
| EP1199786A1 (en) * | 2000-10-17 | 2002-04-24 | Delphi Technologies, Inc. | Method for manufacturing a double-walled, metallic housing for an electric rotating machine |
| EP1347560A1 (en) * | 2000-12-27 | 2003-09-24 | Hitachi, Ltd. | Dynamo-electric machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8536175U1 (en) * | 1986-02-05 | 1987-07-02 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Liquid-cooled electric motor |
| FR2717638B1 (en) * | 1994-03-18 | 1996-04-26 | Valeo Equip Electr Moteur | Water-cooled motor vehicle alternator. |
| DE19817333C5 (en) * | 1998-04-18 | 2007-04-26 | Conti Temic Microelectronic Gmbh | Electric drive unit consisting of electric motor and electronic module |
| DE10305651A1 (en) * | 2003-02-12 | 2004-03-25 | Daimlerchrysler Ag | Friction welding installation for friction welding metal parts comprises a friction welding device and a workpiece holder formed as a workpiece feeding unit provided with a counter bearing arranged on the welding sites |
-
2006
- 2006-08-01 DE DE102006035697A patent/DE102006035697A1/en not_active Withdrawn
-
2007
- 2007-06-08 WO PCT/DE2007/001013 patent/WO2008014734A1/en not_active Ceased
- 2007-06-08 DE DE112007001970T patent/DE112007001970A5/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631365A2 (en) * | 1993-06-18 | 1994-12-28 | Ebara Corporation | Water cooling jacket and method for forming the same |
| US5998896A (en) * | 1997-11-19 | 1999-12-07 | Reliance Electric Industrial Company | Electric motor having frame adaptable for enclosed and open motor cooling |
| DE10039486A1 (en) * | 2000-08-08 | 2002-02-21 | Drm Druckgus Gmbh | Metal component such as generator housing has two cast parts friction-welded to each other, with channel between them |
| EP1199786A1 (en) * | 2000-10-17 | 2002-04-24 | Delphi Technologies, Inc. | Method for manufacturing a double-walled, metallic housing for an electric rotating machine |
| EP1347560A1 (en) * | 2000-12-27 | 2003-09-24 | Hitachi, Ltd. | Dynamo-electric machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014224022A1 (en) | 2014-11-25 | 2016-05-25 | Zf Friedrichshafen Ag | stator |
| CN105048734A (en) * | 2015-06-30 | 2015-11-11 | 杭州厚达自动化系统有限公司 | Preassembling mechanism for motor end cap |
| WO2017186381A1 (en) * | 2016-04-28 | 2017-11-02 | Magna powertrain gmbh & co kg | Electrical machine |
| CN109378945A (en) * | 2018-12-10 | 2019-02-22 | 上海伊控动力系统有限公司 | A kind of power drive system of Deep integrating |
| US20220339997A1 (en) * | 2019-09-27 | 2022-10-27 | Robert Bosch Gmbh | Integrated Electric Drive System and Electric Vehicle |
| US12049128B2 (en) * | 2019-09-27 | 2024-07-30 | Robert Bosch Gmbh | Integrated electric drive system and electric vehicle |
| CN114189092A (en) * | 2021-11-20 | 2022-03-15 | 重庆虎溪电机工业有限责任公司 | A new water channel structure and manufacturing method of a water-cooled motor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006035697A1 (en) | 2008-02-07 |
| DE112007001970A5 (en) | 2009-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008014734A1 (en) | Machine housing for an electrical machine | |
| WO2008014735A1 (en) | Machine housing for an electrical machine | |
| EP3320605B1 (en) | Electrical machine comprising a magnetic flux weakening apparatus | |
| DE112018002327B4 (en) | Dynamo-electric machine | |
| WO2024199573A1 (en) | Steering device | |
| DE102017122908A1 (en) | Segmented switched reluctance motor for force-current electrification | |
| EP4256199B1 (en) | Generator-gearbox-arrangement with brake for a wind turbine | |
| AT516304B1 (en) | flywheel energy storage | |
| WO2022161575A1 (en) | Electric machine with fastening portions protruding in the radial direction from the stator | |
| EP4320712B1 (en) | Electric machine | |
| WO2024230883A1 (en) | Stator, electrical machine and drivetrain | |
| EP4320714A1 (en) | Electric machine | |
| WO2023186210A1 (en) | Stator | |
| WO2023143659A1 (en) | Stator | |
| DE102023114395B4 (en) | Hybrid module | |
| DE102023130902B4 (en) | Rotor arrangement and electric machine | |
| DE19943048A1 (en) | Drive system e.g. for motor vehicle, has rotor arrangement with bearer arrangement for connection to or rotation with drive shaft, with one bearer region for rotor interaction region, and other connected to damper arrangement | |
| DE102006044491A1 (en) | Electrical machine, particularly electrical engines and generators has inner rotor and stator surrounding rotor, where stator is assembled from stator laminated core | |
| WO2024245497A1 (en) | Hybrid module | |
| WO2024245485A1 (en) | Hybrid module | |
| WO2024245496A1 (en) | Hybrid module for the powertrain of a motor vehicle | |
| WO2024245493A1 (en) | Hybrid module | |
| WO2025168496A1 (en) | Power transmission arrangement for transmitting power to a rotor arrangement of a separately excited electrical machine, method for installing a power transmission arrangement, rotor arrangement comprising the power transmission arrangement, and separately excited electrical machine comprising the rotor arrangement | |
| WO2022083823A1 (en) | Electric machine and method for producing an electric machine | |
| WO2025098564A1 (en) | Rotor assembly and electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07722520 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: RU |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1120070019700 Country of ref document: DE |
|
| REF | Corresponds to |
Ref document number: 112007001970 Country of ref document: DE Date of ref document: 20090528 Kind code of ref document: P |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 07722520 Country of ref document: EP Kind code of ref document: A1 |