DE102013106675A1 - Electric machine - Google Patents
Electric machine Download PDFInfo
- Publication number
- DE102013106675A1 DE102013106675A1 DE102013106675.5A DE102013106675A DE102013106675A1 DE 102013106675 A1 DE102013106675 A1 DE 102013106675A1 DE 102013106675 A DE102013106675 A DE 102013106675A DE 102013106675 A1 DE102013106675 A1 DE 102013106675A1
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- Germany
- Prior art keywords
- housing
- rotor
- electric machine
- heat exchanger
- electrical machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
Abstract
Die Erfindung betrifft eine elektrische Maschine (14) für einen Elektro- oder Hybridantrieb (10) eines Kraftfahrzeugs, mit einem Rotor (20), einem Stator (22), mindestens einem Wärmetauscher (44) und einem den Rotor (20), den Stator (22) und den Wärmetauscher (42) in seinem Inneren (30) einhausenden Gehäuse (32). Es ist vorgesehen, dass das Gehäuse (32) gasdicht ausgebildet ist und dass der Rotor (20), der Stator (22) und der Wärmetauscher (44) im Inneren (30) des Gehäuses (32) von einer Atmosphäre aus Helium umgeben sind. Die Erfindung betrifft weiterhin einen entsprechenden Elektro- oder Hybridantrieb (10).The invention relates to an electrical machine (14) for an electric or hybrid drive (10) of a motor vehicle, comprising a rotor (20), a stator (22), at least one heat exchanger (44) and a rotor (20), the stator (22) and the heat exchanger (42) in its interior (30) housing (32). It is provided that the housing (32) is gas-tight and that the rotor (20), the stator (22) and the heat exchanger (44) are surrounded by an atmosphere of helium in the interior (30) of the housing (32). The invention further relates to a corresponding electric or hybrid drive (10).
Description
Die Erfindung betrifft eine elektrische Maschine für einen Elektro- oder Hybridantrieb eines Kraftfahrzeugs, mit einem Rotor, einem Stator, mindestens einem Wärmetauscher und einem den Rotor, den Stator und den Wärmetauscher in seinem Inneren einhausenden Gehäuse. Die Erfindung betrifft weiterhin einen entsprechenden Elektro- oder Hybridantrieb eines Kraftfahrzeugs. The invention relates to an electric machine for an electric or hybrid drive of a motor vehicle, comprising a rotor, a stator, at least one heat exchanger and a housing housing the rotor, the stator and the heat exchanger in its interior. The invention further relates to a corresponding electric or hybrid drive of a motor vehicle.
Eine solche elektrische Maschine ist aus der
Eine Begrenzung des zulässigen Leistungsdurchsatzes durch eine elektrische Maschine ist die thermische Belastung der Wicklungen im Wickelkopf der Statorspulen und der Permanentmagnete im Rotor. Ist es möglich die Verlustwärme effektiver abzuführen und dadurch die Temperatur zu senken, ist es gleichermaßen möglich eine höhere Maschinenleistung bei gleichbleibendem Bauraum sicherzustellen. Diese Anforderung ist besonders relevant für den Dauerbetrieb bei hohen Leistungen. A limitation of the permissible power throughput by an electric machine is the thermal load of the windings in the winding head of the stator coils and the permanent magnets in the rotor. Is it possible to dissipate the heat loss more effectively and thereby reduce the temperature, it is equally possible to ensure a higher engine performance with the same space. This requirement is particularly relevant for continuous operation at high power levels.
Es ist die Aufgabe der Erfindung Maßnahmen anzugeben, die ein verbessertes Abführen von Verlustwärme der lokalen Wärmequellen der elektrischen Maschine ermöglichen. It is the object of the invention to provide measures that allow improved dissipation of heat loss of the local heat sources of the electric machine.
Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale der unabhängigen Ansprüche. Bevorzugte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben, die jeweils einzeln oder in Kombination einen Aspekt der Erfindung darstellen können. The object is achieved by the features of the independent claims. Preferred embodiments of the invention are specified in the subclaims, which individually or in combination may constitute an aspect of the invention.
Bei der erfindungsgemäßen elektrischen Maschine ist vorgesehen, dass das Gehäuse gasdicht ausgebildet ist und dass der Rotor (Läufer), der Stator (Ständer) und der mindestens eine Wärmetauscher im Inneren des Gehäuses von einer Atmosphäre aus Helium umgeben sind. Die elektrische Maschine ist mit dem gasdicht versiegelten Gehäuse der elektrischen Maschine (dem Maschinengehäuse) umschlossen. Die erfindungsgemäße elektrische Maschine umfasst also die Füllung des Gehäuses mit Heliumgas. Die deutliche erhöhte Wärmeleitfähigkeit des Heliums gegenüber Luft ermöglicht einen erhöhten Wärmetransport von den thermisch kritischen Bauteilen (also den lokalen Wärmequellen), wie Kupferwicklungen und Permanentmagneten von Rotor beziehungsweise Stator hin zu den Wärmesenken, insbesondere dem mindestens einen Wärmetauscher. Prinzipiell kann die elektrische Maschine als Elektromotor, als Generator oder als Kombination von beidem, einem sogenannten Motorgenerator, ausgebildet sein. Die elektrische Maschine ist bevorzugt als Innenläufer ausgebildet, bei dem der Rotor (der Läufer) von dem Stator (dem Ständer) umfänglich umgeben ist. In the electric machine according to the invention it is provided that the housing is gas-tight and that the rotor (rotor), the stator (stator) and the at least one heat exchanger are surrounded in the interior of the housing by an atmosphere of helium. The electric machine is enclosed with the gas-tight sealed housing of the electrical machine (the machine housing). The electric machine according to the invention thus comprises the filling of the housing with helium gas. The significant increased thermal conductivity of helium over air allows increased heat transfer from the thermally critical components (ie the local heat sources), such as copper windings and permanent magnets of the rotor or stator towards the heat sinks, in particular the at least one heat exchanger. In principle, the electric machine can be designed as an electric motor, as a generator or as a combination of both, a so-called motor generator. The electric machine is preferably designed as an internal rotor, in which the rotor (the rotor) of the stator (the stator) is circumferentially surrounded.
Gemäß einer bevorzugten Ausführungsform der Erfindung weist der Wärmetauscher mindestens einen von einem Kühlmedium durchströmbaren Kühlkörper auf, dessen Oberfläche zumindest teilweise von der Atmosphäre aus Helium umspülbar ist. Es ergibt sich dabei eine Ausgestaltung des internen Wärmetauschers, bei dem der Wärmetransfer zwischen der Gasfüllung und dem kühlmediumgekühlten Kühlkörper besonders groß ist. According to a preferred embodiment of the invention, the heat exchanger has at least one cooling body through which a cooling medium can flow, the surface of which is at least partially flushable with helium from the atmosphere. This results in an embodiment of the internal heat exchanger, in which the heat transfer between the gas filling and the cooling medium-cooled heat sink is particularly large.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung weist der Wärmetauscher mindestens einen Kühlkanal auf, der über äußere Anschlüsse der elektrischen Maschine zur Bildung eines Kühlsystems an externe Kühlkomponenten anschließbar ist. Durch das Verschalten des Wärmetauschers mit den externen Kühlkomponenten entsteht ein Kühlkreislauf. According to a further preferred embodiment of the invention, the heat exchanger has at least one cooling channel, which can be connected to external cooling components via external connections of the electric machine to form a cooling system. By interconnecting the heat exchanger with the external cooling components creates a cooling circuit.
Weiterhin ist mit Vorteil vorgesehen, dass der Kühlkörper Kühlrippen aufweist. Durch diese Kühlrippen wird die für den Wärmetransport effektiv nutzbare Oberfläche des Kühlkörpers erhöht. Alternativ wird die Oberfläche des Kühlkörpers durch andere geeignete Maßnahmen erhöht. Furthermore, it is advantageously provided that the heat sink has cooling fins. These cooling ribs increase the surface area of the heat sink that can be effectively used for heat transport. Alternatively, the surface of the heat sink is increased by other suitable means.
Gemäß noch einer weiteren bevorzugten Ausführungsform der Erfindung weist die elektrische Maschine mindestens ein Mittel zur Erzeugung einer Helium-Gasströmung in dem Inneren des Gehäuses auf. Dieses Mittel umfasst insbesondere einen Ventilator/Lüfter. Dieser ist bevorzugt als Radial-Ventilator ausgebildet. Der Wärmeaustauch wird durch eine erzwungene Umspülung der Wärmequellen und -senken, mit Hilfe des internen Lüfters, unterstützt. According to yet another preferred embodiment of the invention, the electric machine has at least one means for generating a helium gas flow in the interior of the housing. This means comprises in particular a fan / fan. This is preferably designed as a radial fan. The heat exchange is supported by a forced flushing of the heat sources and sinks with the help of the internal fan.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung weist die elektrische Maschine eine mit dem Rotor drehfest verbundenene oder drehfest verbindbare Abtriebswelle auf, die vom Rotor im Inneren des Gehäuses bis aus dem Gehäuse herausführt und mittels einer Wellenabdichtung gehäuseseitig abgedichtet ist. According to a further preferred embodiment of the invention, the electric machine has a rotatably connected to the rotor or rotatably connectable output shaft which leads out from the rotor inside the housing to the housing and is sealed by a shaft seal housing side.
Gemäß noch einer weiteren bevorzugten Ausführungsform der Erfindung weist die elektrische Maschine eine mit dem Rotor drehfest verbundenene oder drehfest verbindbare Eingangswelle auf, die von außen in das Innere des Gehäuses hereinführt und mittels einer Wellenabdichtung gehäuseseitig abgedichtet ist. Eine solche Eingangswelle wird insbesondere bei einem Hybridantrieb benötigt. Dabei ist eine Brennkraftmaschine (ein Verbrennungsmotor) des Hybridantriebs über diese Eingangswelle mit der als Antriebsmaschine des Hybridantriebs ausgebildeten elektrischen Maschine drehfest verbindbar oder verbunden. According to yet another preferred embodiment of the invention, the electric machine has a rotatably connected to the rotor or rotatably connectable input shaft which leads from the outside into the interior of the housing and is sealed on the housing side by means of a shaft seal. Such an input shaft is needed in particular in a hybrid drive. In this case, an internal combustion engine (an internal combustion engine) of the hybrid drive via this input shaft with the trained as a prime mover of the hybrid electric machine rotatably connected or connected.
Mit Vorteil ist vorgesehen, dass die elektrische Maschine mindestens eine Trennkupplung aufweist. Diese Trennkupplung oder zumindest eine von mehreren solcher Trennkupplungen ist eine Trennkupplung zur wählbaren Trennung/Verbindung der Eingangswelle mit dem Rotor oder der Abtriebswelle mit dem Rotor. Dabei ist insbesondere vorgesehen, dass diese Trennkupplung zwischen die Eingangswelle und den Rotor oder zwischen den Rotor und die Abtriebswelle zwischengeschaltet und ebenfalls im Inneren des Gehäuses angeordnet ist. It is advantageously provided that the electric machine has at least one separating clutch. This disconnect clutch, or at least one of a plurality of such disconnect clutches, is a disconnect clutch for selectively disconnecting / connecting the input shaft to the rotor or the output shaft to the rotor. It is particularly provided that this separating clutch between the input shaft and the rotor or between the rotor and the output shaft is interposed and also disposed in the interior of the housing.
Mit Vorteil weist die elektrische Maschine in ihrem Inneren Strömungsleitelemente auf. Mittels dieser Elemente wird der Helium-Gasstrom gezielt zu den Wärmequellen und Wärmesenken geleitet. Advantageously, the electric machine has flow-guiding elements in its interior. By means of these elements, the helium gas flow is directed to the heat sources and heat sinks.
Die Erfindung betrifft weiterhin einen Elektro- oder Hybridantrieb eines Kraftfahrzeugs mit einer vorstehend beschriebenen elektrischen Maschine. Bei einem Elektroantrieb ist die elektrische Maschine die einzige elektrische Maschine des Fahrzeug-Antriebs oder eine von mehreren elektrischen Maschinen dieses Antriebs. Bei einem Hybridantrieb ist neben der elektrischen Maschine im Antrieb des Kraftfahrzeugs auch eine andere Maschine. Insbesondere eine Brennkraftmaschine, vorhanden. Ein solcher Hybridantrieb kann als paralleler Hybridantrieb oder als serieller Hybridantrieb ausgebildet sein. The invention further relates to an electric or hybrid drive of a motor vehicle with an electric machine described above. In an electric drive, the electric machine is the only electric machine of the vehicle drive or one of several electric machines of this drive. In a hybrid drive in addition to the electric machine in the drive of the motor vehicle and another machine. In particular, an internal combustion engine, available. Such a hybrid drive can be designed as a parallel hybrid drive or as a serial hybrid drive.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden nachfolgend beschrieben. Embodiments of the invention are illustrated in the drawings and will be described below.
Hierbei zeigt die This shows the
Die
Die elektrische Maschine
Rotor und Stator
Auf der der Eingangswelle
Das Gehäuse
Der Wärmetauscher
Der Wärmetauscher
Es ergeben sich folgende Funktion und folgende Vorteile:
Das Innere
The inner
Die besondere Herausforderung liegt in der Darstellung des gasdichten Gehäuses
Das Heliumgas steht im direkten Kontakt mit den zu kühlenden Bauteilen
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102010063973 A1 [0002] DE 102010063973 A1 [0002]
Claims (10)
Priority Applications (1)
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DE102013106675.5A DE102013106675A1 (en) | 2013-06-26 | 2013-06-26 | Electric machine |
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DE102013106675.5A DE102013106675A1 (en) | 2013-06-26 | 2013-06-26 | Electric machine |
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DE102013106675A1 true DE102013106675A1 (en) | 2014-12-31 |
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DE102013106675.5A Pending DE102013106675A1 (en) | 2013-06-26 | 2013-06-26 | Electric machine |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016222850A1 (en) | 2016-11-21 | 2018-05-24 | AUDI HUNGARIA Zrt. | Electric machine and motor vehicle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE405573C (en) * | 1922-04-30 | 1924-11-04 | Aeg | Process for cooling electrical machines and apparatus |
JP2004072980A (en) * | 2002-08-09 | 2004-03-04 | Denso Corp | Vehicle-mounted flywheel battery |
US20040163861A1 (en) * | 2003-02-24 | 2004-08-26 | Honda Motor Co., Ltd. | Cooling apparatus for hybrid vehicle |
US20100176670A1 (en) * | 2009-01-12 | 2010-07-15 | Power Group International Corporation | Machine cooling scheme |
DE102010063973A1 (en) | 2010-12-22 | 2012-06-28 | Bayerische Motoren Werke Aktiengesellschaft | Electric machine e.g. permanently actuated synchronous motor, for electrical driven vehicle, has air flow generating unit for creating air flow in closed circuit, where apertures of rotor and heat exchanger are merged in closed circuit |
-
2013
- 2013-06-26 DE DE102013106675.5A patent/DE102013106675A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE405573C (en) * | 1922-04-30 | 1924-11-04 | Aeg | Process for cooling electrical machines and apparatus |
JP2004072980A (en) * | 2002-08-09 | 2004-03-04 | Denso Corp | Vehicle-mounted flywheel battery |
US20040163861A1 (en) * | 2003-02-24 | 2004-08-26 | Honda Motor Co., Ltd. | Cooling apparatus for hybrid vehicle |
US20100176670A1 (en) * | 2009-01-12 | 2010-07-15 | Power Group International Corporation | Machine cooling scheme |
DE102010063973A1 (en) | 2010-12-22 | 2012-06-28 | Bayerische Motoren Werke Aktiengesellschaft | Electric machine e.g. permanently actuated synchronous motor, for electrical driven vehicle, has air flow generating unit for creating air flow in closed circuit, where apertures of rotor and heat exchanger are merged in closed circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016222850A1 (en) | 2016-11-21 | 2018-05-24 | AUDI HUNGARIA Zrt. | Electric machine and motor vehicle |
WO2018091578A1 (en) | 2016-11-21 | 2018-05-24 | Audi Hungaria Motor Kft. | Electric machine and motor vehicle |
DE102016222850B4 (en) | 2016-11-21 | 2023-01-19 | AUDI HUNGARIA Zrt. | Electric machine and motor vehicle |
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