DE102009015414A1 - Electric vehicle, has electric motor and transmission arranged at support device, which is flexibly fastened to body of vehicle, where support device is flexibly connected with body by three bearings - Google Patents

Electric vehicle, has electric motor and transmission arranged at support device, which is flexibly fastened to body of vehicle, where support device is flexibly connected with body by three bearings Download PDF

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Publication number
DE102009015414A1
DE102009015414A1 DE102009015414A DE102009015414A DE102009015414A1 DE 102009015414 A1 DE102009015414 A1 DE 102009015414A1 DE 102009015414 A DE102009015414 A DE 102009015414A DE 102009015414 A DE102009015414 A DE 102009015414A DE 102009015414 A1 DE102009015414 A1 DE 102009015414A1
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Germany
Prior art keywords
support device
vehicle
electric motor
electric
electric vehicle
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Pending
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DE102009015414A
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German (de)
Inventor
Ulrich Ohnemus
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE102009015414A priority Critical patent/DE102009015414A1/en
Publication of DE102009015414A1 publication Critical patent/DE102009015414A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • 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
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/61—Arrangements of controllers for electric machines, e.g. inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/10—Housings

Abstract

The vehicle has an electric motor (3) and a transmission (4) arranged at a support device (2), which is flexibly fastened to a body (10) of the vehicle. The support device is flexibly connected with the body by three bearings (11-13). An electrical air-conditioning compressor (7) and power electronics (9) are arranged at the support device. The support device encloses the electric motor and the transmission in a frame-like manner. Output shafts (5, 6) are rotatably coupled on opposite sides of the support device with drive wheels.

Description

Die vorliegende Erfindung betrifft ein Elektrofahrzeug gemäß dem Oberbegriff des Patentanspruches 1.The The present invention relates to an electric vehicle according to the preamble of claim 1.

Unter einem Elektrofahrzeug wird in der vorliegenden Anmeldung ein Fahrzeug verstanden, das ausschließlich elektromotorisch durch einen oder mehrere Elektromotor(en) antreibbar ist. Bei dem kürzlich von der BMW Group vorgestellten „Mini E” handelt es sich um ein solches Elektrofahrzeug.Under An electric vehicle in the present application is a vehicle understood that exclusively electric motor driven by one or more electric motor (s) is. At the recent The "Mini E" presented by the BMW Group is one of these Electric vehicle.

Aufgabe der Erfindung ist es, ein Elektrofahrzeug zu schaffen, bei dem der Elektromotor und ein damit zusammenwirkendes Getriebe möglichst kompakt sind und in einfacher Weise im Fahrzeug montierbar sind.task The invention is to provide an electric vehicle in which the Electric motor and a cooperating gear as possible are compact and easy to install in the vehicle.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.These The object is solved by the features of claim 1. advantageous Refinements and developments of the invention are the dependent claims remove.

Ausgangspunkt der Erfindung ist ein Elektrofahrzeug mit einem Elektromotor und einem Getriebe, wobei das Elektrofahrzeug ausschließlich elektromotorisch durch den Elektromotor antreibbar ist. Im Unterschied zu herkömmlichen Fahrzeugen oder zu Hybridfahrzeugen ist also kein Vortrieb erzeugender Verbrennungsmotor vorgesehen.starting point The invention is an electric vehicle with an electric motor and a transmission, the electric vehicle exclusively electric motor can be driven by the electric motor. Unlike traditional ones Vehicles or hybrid vehicles so no propulsion generating Internal combustion engine provided.

Der Kern der Erfindung besteht darin, dass der Elektromotor und das Getriebe an einer Trageinrichtung angeordnet sind, die elastisch an einer Karosserie des Elektrofahrzeugs befestigt ist. Der Elektromotor und das Ge triebe können zusammen mit der Trageinrichtung als „Einheit” vormontiert und dann in das Fahrzeug eingebaut werden. Da die Trageinrichtung elastisch, d. h. über schwingungsdämpfende Elemente mit der Karosserie des Elektrofahrzeugs verbunden ist, brauchen der Elektromotor und das Getriebe nicht jeweils separat schwingungstechnisch von der Karosserie entkoppelt werden.Of the Essence of the invention is that the electric motor and the Transmission are arranged on a support means which are elastic attached to a body of the electric vehicle. The electric motor and the transmission can pre-assembled together with the carrying device as a "unit" and then into the Vehicle to be installed. Since the carrying device is elastic, d. H. above vibration damping elements connected to the body of the electric vehicle, need the electric motor and the gear not each separately vibration technology of the body are decoupled.

Die Trageinrichtung kann beispielsweise rahmenartig ausgebildet sein und den Elektromotor und das Getriebe umschließen.The Carrying device may be formed, for example, like a frame and enclose the electric motor and the transmission.

Ähnlich wie bei herkömmlichen Fahrzeugen mit Verbrennungsmotor kann die Trageinrichtung über drei Lager elastisch mit der Karosserie des Elektrofahrzeugs verbunden sein. Beispielsweise können zwei drehbar bzw. schwenkbar angeordnete Lager und eine so genannte „Drehmomenten-stütze” vorgesehen sein, welche Reaktionsmomente abstützt, die beim Beschleunigen bzw. im Schubbetrieb auftreten.Similar to at conventional Vehicles with internal combustion engine, the support device over three Bearing elastically connected to the body of the electric vehicle be. For example, two rotatably or pivotally mounted bearings and a so-called "torque support" provided be, which supports reaction moments when accelerating or occur in overrun mode.

Die Verwendung der erfindungsgemäßen Trageinrichtung hat den Vorteil, dass bei einem Fahrzeug, das wahlweise mit Verbrennungsmotor oder mit Elektromotor angeboten wird, für beide Varianten dieselben „Aufhängungspunkte” an der Karosserie verwendet werden können.The Use of the carrying device according to the invention has the advantage that in a vehicle that is optional with internal combustion engine or with electric motor is offered, for both variants the same "suspension points" on the Body can be used.

An der Trageinrichtung können auch noch weitere Komponenten bzw. Nebenaggregate des Elektrofahrzeugs angebaut bzw. angeflanscht sein. Beispielsweise kann ein Klimaanlagenkompressor, insbesondere ein elektrischer Klimakompressor, eine elektrische Kühlmittelpumpe und/oder eine elektrische Unterdruckpumpe zur Bremskraftverstärkung bzw. einer Bremskraft verstärkenden Einrichtung an der Trageinrichtung befestigt sein. Auch Elektronikkomponenten, wie z. B. eine Leistungselektronik oder ein so genannter DC/DC-Wandler etc. können an der Trageinrichtung (vor)montiert werden.At the carrying device can Also other components or ancillaries of the electric vehicle be grown or flanged. For example, an air conditioning compressor, in particular an electric air conditioning compressor, an electric coolant pump and / or an electric vacuum pump for brake booster or a braking force reinforcing Device to be attached to the support device. Also electronic components, such as As a power electronics or a so-called DC / DC converter etc. can the carrying device are mounted (before).

Komponenten, wie z. B. Elektronikkomponenten, welche besonders vibrationsempfindlich sind, können zusätzlich elastisch mit der Trageinrichtung verbunden sein. Sie sind dann in „doppelter Weise” schwingungstechnisch von der Karosserie entkoppelt, nämlich einmal über die elastische Kopplung zwischen der (Elektronik)komponente und der Trageinrichtung und zum anderen über die elastische Kopplung zwischen der Trageinrichtung und der Fahrzeugkarosserie.components such as B. electronic components, which are particularly sensitive to vibration, can additionally be elastically connected to the support device. They are then in a "double manner" vibrationally decoupled from the body, namely once over the elastic coupling between the (electronic) component and the carrying device and the other via the elastic coupling between the carrying device and the vehicle body.

Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:in the The invention will be explained in more detail in connection with the drawing. It demonstrate:

1 eine Trageinrichtung gemäß der Erfindung und daran befestigte Komponenten; und 1 a carrying device according to the invention and components attached thereto; and

2 eine in eine Fahrzeugkarosserie montierte Trageinrichtung. 2 a vehicle body mounted carrying device.

1 zeigt ein Antriebsmodul 1 eines hier nicht näher dargestellten Elektrofahrzeugs. Die zentrale Komponente des Antriebsmoduls ist eine Trageinrichtung 2, die in einer Stirnansicht die Form eines Rahmens hat. Bei dem hier gezeigten Ausführungsbeispiel ist die Trageinrichtung 2 aus mehreren plattenartigen Elementen zusammengesetzt. Alternativ dazu kann als Trageinrichtung auch eine Rahmen-/Rohrkonstruktion bzw. eine reine Rohrkonstruktion verwendet werden. „Innerhalb” der rahmenartigen Trageinrichtung 2 ist eine für den Fahrzeugantrieb vorgesehene elektrische Maschine 3 und ein daran angeflanschtes Getriebe 4 angeordnet. Das Getriebe 4 weist eine oder mehrere Übersetzungsstufen sowie eine Differentialeinheit (nicht dargestellt) auf. Das vom Elektromotor 3 erzeugte Drehmoment wird über das Getriebe 4 und die Differentialgetriebeeinheit des Getriebes auf eine linke und eine rechte Abtriebswelle 5 bzw. 6 geleitet, welche hier nicht näher dargestellte Antriebsräder des Elektrofahrzeugs antreiben. 1 shows a drive module 1 an electric vehicle, not shown here. The central component of the drive module is a carrying device 2 which has the shape of a frame in an end view. In the embodiment shown here is the support device 2 composed of several plate-like elements. Alternatively, as a support means, a frame / pipe construction or a pure pipe construction can be used. "Inside" the frame-like carrying device 2 is an intended for the vehicle drive electric machine 3 and a flanged gearbox 4 arranged. The gear 4 has one or more translation stages and a differential unit (not shown). That of the electric motor 3 Torque generated is via the gearbox 4 and the differential gear unit of the transmission to a left and a right output shaft 5 respectively. 6 directed, driving here not shown drive wheels of the electric vehicle.

Bei dem hier gezeigten Ausführungsbeispiel ist an der Trageinrichtung 2 ferner ein elektrischer Klimakompressor 7 angeordnet. An einer Oberseite der Trageinrichtung 2 ist ein DC/DC-Wandler 8 und eine Leistungselektronik 9 angeordnet. Der DC/DC-Wandler 8 und die Leistungselektronik 9 können über Dämpfungselemente mit der Trageinrichtung 2 verbunden sein, wodurch die Elektronikkomponenten besser vor mechanischen Schwingungen geschützt werden können.In the embodiment shown here is on the support device 2 also an electric air conditioning compressor 7 arranged. At an upper side of the carrying device 2 is a DC / DC converter 8th and power electronics 9 arranged. The DC / DC converter 8th and the power electronics 9 Can use damping elements with the support device 2 be connected, whereby the electronic components can be better protected against mechanical vibrations.

Die in 1 gezeigte Antriebseinheit kann fertig vormontiert und anschließend in eine Fahrzeugkarosserie 10 (vgl. 2) eingebaut werden. Die Trageinrichtung 2 ist über ein linkes und ein rechtes Schwenklager 11 bzw. 12 und über eine so genannte Drehmomentstütze 13 an insgesamt drei „Punkten” mit der Fahrzeugkarosserie verbunden. Die beiden Lager 11, 12 und die Drehmomentstütze 13 weisen vorzugsweise Dämpfungselemente auf, so dass die Trageinrichtung 2 und die daran angeordneten Komponenten zumindest in gewissem Umfang schwingungstechnisch von der Fahrzeugkarosserie 10 „entkoppelt” sind.In the 1 shown drive unit can be pre-assembled and then in a vehicle body 10 (see. 2 ) to be built in. The carrying device 2 is about a left and a right pivot bearing 11 respectively. 12 and a so-called torque arm 13 connected to the vehicle body at a total of three "points". The two camps 11 . 12 and the torque arm 13 preferably have damping elements, so that the support device 2 and the components arranged thereon, at least to a certain extent from the vibration of the vehicle body 10 Are "decoupled".

Claims (6)

Elektrofahrzeug, mit mindestens einem Elektromotor (3) und einem Getriebe (4), wobei das Elektrofahrzeug ausschließlich elektromotorisch durch den mindestens einen Elektromotor (3) antreibbar ist, dadurch gekennzeichnet, dass der mindestens eine Elektromotor (3) und das Getriebe (4) an einer Trageinrichtung (2) angeordnet sind, die elastisch an einer Karosserie (10) des Elektrofahrzeugs befestigt ist.Electric vehicle, with at least one electric motor ( 3 ) and a transmission ( 4 ), wherein the electric vehicle exclusively by electric motor by the at least one electric motor ( 3 ) is driven, characterized in that the at least one electric motor ( 3 ) and the transmission ( 4 ) on a carrying device ( 2 ) are arranged, which elastically on a body ( 10 ) of the electric vehicle is attached. Elektrofahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Trageinrichtung (2) über drei Lager (11, 12, 13) elastisch mit der Karosserie (10) verbunden ist.Electric vehicle according to claim 1, characterized in that the carrying device ( 2 ) over three bearings ( 11 . 12 . 13 ) elastic with the body ( 10 ) connected is. Elektrofahrzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass an der Trageinrichtung ein Klimakompressor, insbesondere ein elektrischer Klimakompressor (7) angeordnet ist.Electric vehicle according to one of claims 1 or 2, characterized in that on the support means an air conditioning compressor, in particular an electric air conditioning compressor ( 7 ) is arranged. Elektrofahrzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass an der Trageinrichtung (2) eine Leistungselektronik (9) angeordnet ist.Electric vehicle according to one of claims 1 to 3, characterized in that on the support device ( 2 ) a power electronics ( 9 ) is arranged. Elektrofahrzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Trageinrichtung (2) den Elektromotor (3) und das Getriebe (4) rahmenartig umschließt.Electric vehicle according to one of claims 1 to 4, characterized in that the carrying device ( 2 ) the electric motor ( 3 ) and the transmission ( 4 ) encloses like a frame. Elektrofahrzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass auf einander gegenüberliegenden Seiten der Trageinrichtung (2) mit Antriebsrädern drehgekoppelte Abtriebswellen (5, 6) aus der Trageinrichtung (2) herausgeführt sind, wobei die Abtriebswellen (5, 6) mit einem Differential des Getriebes (4) drehgekoppelt sind.Electric vehicle according to one of claims 1 to 5, characterized in that on opposite sides of the support device ( 2 ) with drive wheels rotationally coupled output shafts ( 5 . 6 ) from the carrying device ( 2 ), wherein the output shafts ( 5 . 6 ) with a differential of the transmission ( 4 ) are rotationally coupled.
DE102009015414A 2009-03-27 2009-03-27 Electric vehicle, has electric motor and transmission arranged at support device, which is flexibly fastened to body of vehicle, where support device is flexibly connected with body by three bearings Pending DE102009015414A1 (en)

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