WO2012123173A2 - Dispositif d'entraînement pour entraîner une roue d'un essieu à bras oscillants de véhicule électrique - Google Patents

Dispositif d'entraînement pour entraîner une roue d'un essieu à bras oscillants de véhicule électrique Download PDF

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Publication number
WO2012123173A2
WO2012123173A2 PCT/EP2012/051637 EP2012051637W WO2012123173A2 WO 2012123173 A2 WO2012123173 A2 WO 2012123173A2 EP 2012051637 W EP2012051637 W EP 2012051637W WO 2012123173 A2 WO2012123173 A2 WO 2012123173A2
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
drive device
planetary gear
electric machine
driving
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
Application number
PCT/EP2012/051637
Other languages
German (de)
English (en)
Other versions
WO2012123173A3 (fr
Inventor
Jens Heimann
Martin Münster
Stephan Pollmeyer
Ulrich Mair
Karl-Hermann Ketteler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO2012123173A2 publication Critical patent/WO2012123173A2/fr
Publication of WO2012123173A3 publication Critical patent/WO2012123173A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle

Definitions

  • the present invention relates to a drive device for driving a wheel of a torsion beam axle for an electrically driven vehicle according to the preamble of patent claim 1.
  • the arrangement of the drive train in electrically driven vehicles corresponds to the arrangement of the drive train in vehicles having a central drive, comprising an internal combustion engine.
  • a drive device comprising an electric machine, a transmission and a differential is fixed to the body in the center of the vehicle between the front or rear wheels arranged; The output torque is transmitted via side shafts to the driven wheels as in conventional central drives.
  • the suspension concept remains largely intact, with only modifications of the unit mounting and the subframe are required.
  • the battery housing represents a significant intervention in the vehicle structure. It is known, the battery in the subsoil, for example, under the rear seat or in the area taken in central drives with an internal combustion engine from the transmission tunnel was to integrate.
  • a torsion beam axle can generally be understood as meaning in general an axle which has at least one trailing arm per wheel.
  • these may be a torsion beam axle, a trailing arm axle and / or a trailing arm axle.
  • Radnahe electrical drives are also known in the prior art, which are understood by close to the wheel drives in further drives, which provide one or more electric motors per drive wheel of the vehicle.
  • vehicles with two or more drive wheels are known, which have a corresponding number of drives, so two or more. In each case, an electric motor can act on exactly one drive wheel.
  • Under Radnahen drives but drives can be understood that are arranged handlebar-resistant and / or wheel.
  • the electric drives can be arranged Radmonfest;
  • the electric drive springs directly with the respective wheel and the unsprung mass is directly influenced by the drive.
  • the electric drives can be arranged handlebar fixed, in which case they are attached to the suspension arms, for example, the composite beam.
  • This design reduces the unsprung mass by locating the electric drives close to the most advanced linkage point.
  • a driven vehicle axle designed as a torsion beam axle is known, in which an electric motor is provided for each wheel of the axle, which is arranged with the axis of rotation in the vehicle longitudinal direction, wherein its housing forms part of the longitudinal arm of the torsion beam axle ,
  • Near-wheel drives may be provided on four-wheel, front-wheel or rear-wheel drive vehicles, the axle types of the powered vehicle axles being conventional axle types, e.g. Strut or double wishbone axle types. Furthermore, wheel-near drives can be integrated into wheel-integrated running gears.
  • the near-wheel electric drives can have a transmission.
  • a drive device for driving the wheel which can be integrated into a vehicle wheel which has an electric motor and two planetary gears connected in series, which are arranged axially between the electric motor and the wheel.
  • the use of radnahen electrical drives for driving a wheel of a driven axle results in the vehicle body in a high flexibility, since the elimination of the central drive in the vehicle center new degrees of freedom in the vehicle design, especially in the design of the vehicle interior, the battery housing and crash safety.
  • wheel-specific drive torques can be generated by radnahe electrical drives, which functions such as torque vectoring, ESP, ABS, ASR, etc. can be easily implemented. Due to the fast and more accurate controllability of electric drives, these can Functions are optimized compared to conventional brake-based control systems.
  • the present invention has for its object to provide a drive device for driving a wheel of a torsion beam axle for an electrically driven vehicle.
  • a drive device for driving a wheel of a torsion beam axle for an electrically driven vehicle comprising an electric machine and a viewed in the direction of power flow in traction on the output side of the electric machine switched gear, the housing of the electric machine or the housing of the transmission directly to the trailing arm bolted to the torsion beam axle, integrated as a multi-part welding component in the trailing arm or executed in one piece with the trailing arm.
  • the electric machine can be made high-revving, the transmission having a high gear ratio, resulting in a high power / weight ratio (kW / kg) of the drive device and a small size of the electric machine.
  • a translation is understood here as the ratio of the rotational speed of the output shaft of the transmission to the rotational speed of the drive shaft of the transmission.
  • a high ratio is understood to mean a ratio of greater than 1:10, preferably 1:10 to 1:20, particularly preferably 1:14 to 1:18, in particular 1:16.
  • a high-speed machine is understood to mean a machine which has a maximum rotor rotational speed of more than 15,000 revolutions per minute, preferably between 19,000 and 25,000 revolutions per minute.
  • the electric machine and the transmission may have a common housing.
  • connection of the caliper and / or the damper and / or the spring are integrated into the housing of the transmission or in the housing of the electric machine of the drive device, wherein the connecting screws for fixing the caliper at the same time housing screws for fixing the Drive device on the trailing arm of the axis can represent.
  • the arrangement of the electric machine and the transmission is such that in the predominant operating position of the vehicle, the lubricant automatically flows back under the action of gravity from the electric machine in the oil sump in the gear compartment, for which purpose the housing of the electric machine is designed such that a sufficient lubrication of the bearings of the rotor shaft is ensured.
  • the gearbox connected on the output side of the electric machine preferably comprises two planetary gearboxes connected in series.
  • the two planetary gear is a large translation allows, the dimensions and weight of the electric machine and thus the unsprung mass can be kept low;
  • the obtainable by the two planetary gear ratio can assume a value that is greater than 10.
  • the distribution of the achievable translation on the two planetary gear can be done symmetrically or asymmetrically.
  • the combination of a low drive torque with a high speed utilization in total in conjunction with the high-ratio transmission of the drive device results in a high power / weight ratio (kW / kg).
  • the electrical machine can thereby be dimensioned small, which allows or simplifies the integration of the electric machine in the trailing arm.
  • the considered in the power flow direction in the train operation on the drive side of the e- lectric machine switched gear can also be designed as a planetary gear, spur gear or as a combination of a planetary gear with a spur gear or with a bevel gear.
  • Figure 1 A schematic plan view of a state of the
  • FIG. 2 shows a schematic sectional view of a first embodiment of a drive device according to the invention for an electrically drivable vehicle
  • FIG. 3 shows a schematic sectional view of a second embodiment of a drive device according to the invention for an electrically drivable vehicle
  • Figure 4 is a schematic perspective view of an embodiment of a drive device according to the invention for illustrating the connection of the damper in the housing of the electric machine and the attachment of the housing of the electric machine to the trailing arm for an electrically driven vehicle;
  • Figure 5 A schematic plan view of an embodiment of a drive device according to the invention for illustrating the connection of the damper in the housing of e-lektrischen machine and the attachment of the housing of the electric machine to the trailing arm for an electrically driven vehicle.
  • a prior art compound link rear axle 1 constructed according to the prior art comprises two trailing links 2, 3, which are interconnected by a transverse section 4.
  • the torsion beam rear axle 1 is screwed by two rubber bearings 5, 6 with the body of the vehicle.
  • the wheels of the torsion beam rear axle 1 are provided in the figure with the reference numerals 7 and 8 respectively. Further, in the attached Figure 1 with 9 a damper and 10 a spring of the axis 1 are designated.
  • a drive device 1 1 is provided for driving a wheel 7 of a torsion beam axle 1 of an electrically driven vehicle, which connects an electric machine 12 and two connected in series in the power flow direction in traction on the output side of the electric machine 12
  • Planetary gear 13, 14 includes.
  • the first and the second planetary gear 13, 14 are arranged in the example shown on the wheel 7 side facing the electric machine 12.
  • the rotor of the electric machine 12 via a sun gear shaft 23 rotatably connected to the sun gear 17 of the first planetary gear 13, wherein the web 18 of the first planetary gear 13 is rotatably connected via a further sun gear 27 with the sun gear 19 of the second planetary gear 14 and wherein the output of the drive device 1 1 via the web 20 of the second planetary gear 14 and a non-rotatably connected to the web 20 shaft 24 takes place, which is rotatably connected to the wheel hub 15.
  • the ring gear 21 of the first planetary gear 13 and the ring gear 22 of the second planetary gear 14 are arranged fixed to the housing; they may be coupled to the housing 16 of the planetary gear 13, 14 of the drive device 1 1 or be integral with the housing 16.
  • the ring gear 21 of the first planetary gear 13 and the ring gear 22 of the second planetary gear 14 may also be pressed into the housing 16.
  • a radial shoulder may be provided to compensate for the difference in diameter between the housing 16 and the ring gear. Due to the design of a ring gear as einpressbarer in a cylindrical housing Hohlrad- ring can be selected depending on the load of the material, which may result in a reduction of the weight.
  • the rotor of the electric machine 12 may be integral with the sun gear 23 of the first planetary gear 13; Furthermore, the sun gear 27 of the second planetary gear 14 may be integrally formed with the web 18 of the first planetary gear 13.
  • the teeth are preferably helical teeth, wherein the connection between the web 18 of the first planetary gear 13 and the sun gear 19 of the second planetary gear 14 is axially and radially supported by rolling bearings, plain bearings or thrust washers.
  • the helix angle of the sun gear 17 of the first planetary gear 13 is opposite to the helix angle of the sun gear 19 of the second planetary gear 14.
  • the directions of the helix angles of the sun gear 17 of the first planetary gear 13 and the sun gear 19 of the second planetary gear 14 are to be selected in an advantageous manner so the loads on the bearings of the drive device 1 1, in particular on the bearings of the shaft 23, via which the rotor is connected to the sun gear 17 of the first planetary gear 13, are minimized.
  • the friction losses are minimized and it is possible a smaller dimensioning of the bearings.
  • the storage of the sun gear 23 of the first planetary gear 13 coincides with the bearing of the rotor of the electric machine 12, so that the need for separate storage is eliminated, the sun gear 17 of the first planetary gear 13 facing away from the bearing of the rotor of the electric machine 12 preferably by a spring element can be axially biased.
  • the storage of connected to the web 20 of the second planetary gear 14 shaft 24, ie the output of the drive device 1 1, formed by the wheel bearing of the wheel 7, which as a bearing of conventional design, for example, as a double-row roller bearing or bearing as two Einzelschrägrollenlager with a pressure angle between 15 ° and 60 ° can be executed.
  • the number of bearings of the drive device can be reduced in an advantageous manner.
  • connection of the connected to the web 20 of the second planetary gear 14 shaft 24 with the hub 15 can be done by means of a plug-in spline connection or a polygonal profile;
  • the drive device 1 1 opposite end of the non-rotatably connected to the web 20 of the second planetary gear 14 shaft 24, the wheel hub 15 represent itself, whereby the assembly and manufacturing costs are reduced.
  • the electric machine 12 can be used as a hollow shaft motor, i. be designed as an electric machine with a rotor designed as a hollow shaft, wherein the first and the second planetary gear 13,
  • a first bearing is formed by the wheel bearing of the wheel 7, as already explained
  • the web 20 of the second planetary gear 14 rotatably connected shaft 24 which is preferably arranged on a journal of the shaft 24.
  • the electric machine 12 of the drive device 1 1 can be designed as an asynchronous machine, as a foreign-excited or permanent magnet synchronous machine or as a cross-field machine, which offers a high degree of flexibility.
  • the housing 26 of the electric machine 12 or the housing 16 of the planetary gear 13, 14 serve as a wheel or as part of the wheel carrier.
  • the housing 26 of the electric machine 12 or the housing 16 of the planetary gear 13, 14 may be integrated, for example, as a multi-part welding component in the trailing arm 2 or executed in one piece with the trailing arm 2.
  • the electric machine 12 can be inserted into the trailing arm 2 like a cartridge.
  • connection of the caliper (in the case of a disc brake) and / or the damper 9 and / or the spring 10 in the housing 16 of the planetary gear 13, 14 (preferably in an embodiment of Figure 3) or in the housing 26 of the electric machine 12 (preferably in an embodiment of Figure 2) of the drive device 1 1 integrated, the connecting screws for fixing the caliper can simultaneously represent housing screws for mounting the drive device 1 1 on the trailing arm 2 of the axle.
  • a very compact design of the drive device can be realized with a low unsprung mass and high power / weight ratio (kW / kg).
  • the drive device presented here can also be combined with any axle types, for example, with a central link, Sword-arm, or trapezoidal link axle.
  • the drive device has a low number of bearings and good accessibility, and it can be integrated into the axle with little modification of an existing vehicle axle.
  • the trailing arm has to be replaced by a modified part.
  • the braking device of the wheels may be designed as a disc brake or drum brake; the drive device may be air-cooled or fluid-cooled, wherein the electric machine, the planetary gear transmission and the power electronics can have a common cooling.
  • the power electronics can also be arranged radtragerfest or motor fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

Dispositif d'entraînement (11) pour entraîner une roue (7) d'un essieu à bras oscillants (1) de véhicule électrique, comprenant un moteur électrique (12) et une unité de transmission (13,14) montée côté sortie du moteur électrique (12), vu dans la direction du flux de force en mode de fonctionnement par traction. Selon l'invention, le carter (26) du moteur électrique (12) ou le boîtier (16) de l'unité de transmission (13,14) est vissé en liaison directe avec le bras oscillant longitudinal (2) de l'essieu du véhicule ou bien ils sont intégrés dans le bras oscillant longitudinal (2) en tant qu'élément de soudage en plusieurs parties.
PCT/EP2012/051637 2011-03-16 2012-02-01 Dispositif d'entraînement pour entraîner une roue d'un essieu à bras oscillants de véhicule électrique Ceased WO2012123173A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110005625 DE102011005625A1 (de) 2011-03-16 2011-03-16 Antriebsvorrichtung zum Antreiben eines Rades einer Verbundlenkerachse für ein elektrisch antreibbares Fahrzeug
DE102011005625.4 2011-03-16

Publications (2)

Publication Number Publication Date
WO2012123173A2 true WO2012123173A2 (fr) 2012-09-20
WO2012123173A3 WO2012123173A3 (fr) 2013-03-28

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PCT/EP2012/051637 Ceased WO2012123173A2 (fr) 2011-03-16 2012-02-01 Dispositif d'entraînement pour entraîner une roue d'un essieu à bras oscillants de véhicule électrique

Country Status (2)

Country Link
DE (1) DE102011005625A1 (fr)
WO (1) WO2012123173A2 (fr)

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CN109866605A (zh) * 2017-12-01 2019-06-11 湖北省专用汽车研究院 一种电动车轮电机悬置的齿轮传动装置

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DE102015213357B4 (de) 2015-07-16 2018-02-08 Zf Friedrichshafen Ag Antreibbare Verbundlenkerachse mit einem Querprofil und jeweils endseitig des Querprofils damit verbundenen Längslenkern
DE102015213356A1 (de) 2015-07-16 2017-01-19 Zf Friedrichshafen Ag Antreibbare Verbundlenkerachse eines Fahrzeuges mit zwei Längslenkern
DE102015213355A1 (de) 2015-07-16 2017-01-19 Zf Friedrichshafen Ag Längslenkervorrichtung einer antreibbaren Verbundlenkerachse
DE102015213354A1 (de) 2015-07-16 2017-01-19 Zf Friedrichshafen Ag Längslenkervorrichtung einer antreibbaren Verbundlenkerachse mit einem Gehäuse
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DE102018213234A1 (de) 2018-08-07 2020-02-13 Zf Friedrichshafen Ag Fahrzeugachse mit einer elektrischen Antriebsvorrichtung und elektrische Antriebsvorrichtung
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Also Published As

Publication number Publication date
WO2012123173A3 (fr) 2013-03-28
DE102011005625A1 (de) 2012-09-20

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