WO2019201472A1 - Driving system for a hybrid motor vehicle and transmission system comprising such a driving system - Google Patents

Driving system for a hybrid motor vehicle and transmission system comprising such a driving system Download PDF

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Publication number
WO2019201472A1
WO2019201472A1 PCT/EP2019/000125 EP2019000125W WO2019201472A1 WO 2019201472 A1 WO2019201472 A1 WO 2019201472A1 EP 2019000125 W EP2019000125 W EP 2019000125W WO 2019201472 A1 WO2019201472 A1 WO 2019201472A1
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WO
WIPO (PCT)
Prior art keywords
transmission
transmission shaft
drive
connecting hub
bearing
Prior art date
Application number
PCT/EP2019/000125
Other languages
French (fr)
Inventor
Gilles Lebas
Emmanuel Commeine
Original Assignee
Valeo Embrayages
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 Valeo Embrayages filed Critical Valeo Embrayages
Publication of WO2019201472A1 publication Critical patent/WO2019201472A1/en

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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
    • 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
    • B60K6/40—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 assembly or relative disposition of components
    • 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
    • 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
    • B60K6/40—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 assembly or relative disposition of components
    • B60K6/405—Housings
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the context of the present invention is that of transmissions for motor vehicles, including transmissions of hybrid powertrains.
  • the invention relates to a drive system of a transmission member, said drive system being integrated into a transmission system of a hybrid traction chain intended to be arranged between an internal combustion engine and a box. of a motor vehicle.
  • the invention also relates to a transmission system comprising such a drive system.
  • hybrid motor vehicles comprising a drive system disposed between an internal combustion engine and a gearbox.
  • the drive system includes a rotating electrical machine and a drive module to allow transmission of torque between the rotating electrical machine and the gearbox.
  • a transmission shaft of the gearbox can be selectively coupled, via a clutch, to the rotating electrical machine and / or the internal combustion engine. It is thus possible to cut the internal combustion engine at each stop of the motor vehicle, and restart it with the rotating electric machine.
  • the rotating electrical machine can also constitute an electric brake or bring a surplus of energy to the internal combustion engine to assist or prevent it from stalling. When the internal combustion engine is in operation, the rotating electrical machine can act as an alternator.
  • the rotating electrical machine can also drive the vehicle independently of the internal combustion engine.
  • the drive system is offset relative to the clutch module, that is to say that the transmission shaft tax of the rotating electrical machine is shifted relative to the axis of the at least one clutch of the clutch module.
  • a transmission shaft connecting the rotating electrical machine to the transmission module is conventionally maintained by three bearings. These three bearings are positioned coaxially with each other, a first bearing being located at the drive module, and two other bearings being located axially on either side of the electrical machine. rotating.
  • This type of maintenance of the three-stage transmission shaft is hyperstatic: the orientation of the transmission shaft is over-defined by the three possible pairs of bearings.
  • the known drive systems impose very tight manufacturing and mounting tolerances on parts relating to the maintenance of the transmission shaft between the rotating electrical machine and the drive module. Consecutively, the manufacturing costs of the known drive systems are too high and the risks of breakdown or even breakage of the drive shaft are high because of the hyperstatism.
  • the object of the present invention is to propose a new training system in order to at least largely meet the above problems and to furthermore lead to other advantages.
  • Another object of the invention is to eliminate the hyperstatism of the mounting of the transmission shaft between the rotating electrical machine and the clutch module.
  • Another object of the invention is to reduce the manufacturing costs of such a drive system.
  • the invention achieves, in a first aspect, through a drive system of a torque transmission member for a hybrid power train, said system comprising:
  • a training module comprising a housing
  • a rotating electric machine comprising:
  • a transmission shaft rotatably coupled to the rotor and extending axially from the rotating electrical machine to the drive module
  • the drive system comprising a device configured to support radial forces of the transmission shaft with respect to the rotating electrical machine and the drive module, said device comprising exactly two bearings.
  • the drive shaft of the drive system is coupled in rotation with the rotating electrical machine on the one hand and with the drive module on the other hand. Subsequently, the transmission shaft extends axially between the rotating electrical machine and the drive module. In in other words, the drive module and the rotating electrical machine are positioned axially relative to each other, the transmission shaft for transmitting a torque between said rotating electrical machine and said drive module.
  • This configuration makes it possible to define a single orientation of the transmission shaft via the two bearings of the device of the drive system, thus eliminating the hyperstatism and granting a certain flexibility to the drive system.
  • This flexibility makes it possible to absorb radial dynamic forces due, for example, to the acyclisms of the internal combustion engine, to variations in the direction of the torque transmitted to or from the rotating electrical machine, to torque variations, or to any other dynamic effort.
  • this configuration advantageously reduces the manufacturing costs of such a drive system and simplify assembly.
  • the training system according to the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
  • a first bearing is positioned axially at a first axial end of the transmission shaft, said first end of the transmission shaft being positioned opposite the drive module relative to the rotating electrical machine.
  • This configuration advantageously makes it possible to increase the axial distance between the first bearing and the drive module in order to better define the orientation of the transmission shaft;
  • a second bearing is positioned axially at the drive module at a second axial end of the transmission shaft, said second end being located on the side of the drive module. More generally, the second bearing is located at the drive module, that is to say axially between the second axial end of the transmission shaft and the rotating electrical machine. This advantageous configuration makes it possible to increase the axial distance between the second bearing and the rotating electrical machine so as to better define the orientation of the transmission shaft;
  • the first bearing is located radially inside the second bearing.
  • the transmission shaft comprises a first bearing surface against which the first bearing is radially supported and a diameter of which is less than a diameter of a second bearing surface of the transmission shaft against which the second bearing bears radial.
  • the second bearing is located radially inside the first bearing.
  • the diameter of the first bearing surface of the drive shaft against which the first bearing is radially supported is greater than the diameter of the second bearing of said drive shaft against which the second bearing is in radial support.
  • the first and second bearings are situated at the same radial distance with respect to the transmission shaft.
  • the bearings are located radially outside the transmission shaft, an inner ring of each bearing being in radial abutment against the transmission shaft.
  • This radial support may be direct or indirect, an intermediate part being interposed radially between the inner ring of at least one of the bearings and the transmission shaft;
  • the first and / or the second bearing is / are of the type of a ball bearing comprising at least one row of balls;
  • the transmission shaft comprises an axial stop element of the first bearing. More particularly, the transmission shaft comprises a shoulder extending radially outwards and delimiting the first bearing surface of the transmission shaft. According to a first embodiment, the shoulder is located in an axially intermediate position between the first bearing and the drive module. According to a second alternative embodiment, the shoulder is located on the side of the first axial end of the transmission shaft, the first bearing being located in an axially intermediate position between said shoulder and the drive module.
  • the first bearing is in axial support against the shoulder of the transmission shaft, a front or rear face of the inner ring of the first bearing being in axial abutment against the shoulder;
  • the transmission shaft is rotatably coupled to a connecting hub of the drive module, said connecting hub extending axially between the second end of the transmission shaft and the rotating electrical machine;
  • the connecting hub comprises an axial elongation bearing which extends in the direction of the first end of the transmission shaft.
  • the second bearing is located axially at the level of axial elongation of the connecting hub, so that an inner ring of said second bearing is in radial abutment against said axial elongation range.
  • the housing of the drive module comprises two half-shells delimiting between them a volume in which is housed the connecting hub.
  • the two half-shells are preferably fixed integrally to one another in order to form a closed volume between them;
  • the half-shells forming the drive housing are preferably located axially opposite one another, a first half-shell being located axially on the side of the rotating electrical machine, and a second half-shell being located axially on the side of the second end of the drive shaft. More particularly, the first half-shell is advantageously located in line with the second bearing to reduce the radial size of the drive module.
  • the first half-shell comprises a heel forming its inner radial end, said heel bearing radially against an outer ring of the second bearing;
  • the first half-shell of the housing of the drive module comprises a sealing member configured to provide a seal between the housing and the connecting hub. Sealing means in particular to limit, and preferably prevent, the leakage of a hydraulic fluid from inside the volume defined by the two half-shells outwardly.
  • This configuration advantageously makes it possible to lubricate the various components of the drive module, and in particular the second bearing; the sealing member preferably comprises a seal which is simultaneously in contact with, on the one hand, the half-shell situated at the level of the second bearing and, on the other hand, the transmission shaft or the link hub.
  • the seal is of the type of a dynamic seal, such as for example a lip seal;
  • the first half-shell of the housing of the drive module comprises a groove located at an inner radial end of said first half-shell.
  • the seal is housed in the groove to reduce the radial size of the sealing member and / or the drive module.
  • the groove is advantageously formed by a circumferential contour around the axis of rotation O. the groove is open radially inwards, so that the seal, housed in the groove, can be pressed against the face opposite the drive shaft or the connecting hub;
  • the groove of the first half-shell is located in an axially intermediate position between the rotating electrical machine and the second bearing;
  • a seal is positioned in the groove of the first half-shell, said seal and said groove forming the sealing member.
  • the transmission shaft comprises first rotational coupling elements and the connecting hub comprises second rotational coupling elements, said first and second rotational coupling elements collectively making it possible to couple in rotation the transmission shaft to the hub; link. More particularly, the first rotational coupling elements are located on a radially outer face of the transmission shaft, and the second rotational coupling elements are located on a radially inner face of the connecting hub.
  • the first rotational coupling elements are advantageously of the type of splines, called first splines, which extend axially along a portion of the transmission shaft; and the second rotational coupling members are splines, called second splines, which extend axially along a portion of the connecting hub.
  • the first and second flutes collaborate together by engagement of complementary shapes.
  • the first splines are of the male type and the second splines are of the female type.
  • the first grooves are of the female type and the first grooves are of the male type.
  • the transmission shaft comprises a key forming the first rotational coupling elements, said key cooperating with a complementary shaped groove formed on the inner radial face of the connecting hub, said groove forming the second coupling elements in rotation.
  • the first rotational coupling elements are formed by the groove on an outer face of the transmission shaft, and the second rotational coupling elements are formed by a key;
  • the axial elongation span of the connecting hub is delimited axially at its non-free end by a shoulder extending radially outwards, said shoulder allowing axial stop of said connecting hub against the second bearing;
  • the connecting hub is held axially against the transmission shaft by an axial stop member. More particularly, the axial stop member is positioned axially at the second end of the transmission shaft;
  • the transmission shaft of the rotating electrical machine is coaxial with the axis of the connecting hub.
  • the centering of the rotating electrical machine on the connection hub can be provided by the first rotational coupling elements of the transmission shaft cooperating with the second coupling elements in rotation of the connecting hub.
  • This advantageous configuration makes it possible to reduce a radial clearance between the transmission shaft and the connecting hub.
  • the transmission shaft of the rotating electrical machine can be rotatably coupled to the connecting hub via a constant velocity joint, such as an Oldham type seal. The use of this type of seal makes it possible not to have to radially center the transmission shaft of the rotating electrical machine with respect to the axis of the connecting hub.
  • the transmission shaft of the electric machine is then coupled in rotation and in translation to a first face of the constant velocity joint, said first face being oriented axially towards the rotating electrical machine, and the connecting hub is coupled in rotation and in translation to a second face of the constant velocity joint, said second face being oriented axially towards the connecting hub.
  • the centering of the electric motor on the connecting hub can also be effected by the use of a flexible seal. The use of this type of seal makes it possible not to have to center the shaft radially transmitting the rotating electrical machine relative to the axis of the connecting hub.
  • the invention relates to a transmission system for hybrid traction system comprising: a drive system according to the first aspect of the invention or according to any of its features;
  • a clutch module comprising at least one clutch and an actuating system for configuring the at least one clutch in an engaged or disengaged configuration
  • torque transmission means to allow the transfer of a torque between the drive system and the clutch module.
  • the transmission system according to the second aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
  • the torque transmission means comprise at least a first gear wheel and a first transmission member, said first gear wheel being coupled in rotation to the connecting hub, and said first transmission member being configured to transmit a torque between the first gear wheel toothed and the clutch module. More particularly, the first gear wheel is held axially against the connecting hub by the axial stop member, preferably on one side of the connection hub to the rotating electrical machine.
  • the torque transmission means comprise at least a first grooved pulley and a first transmission member, said first grooved pulley being rotatably coupled to the connecting hub, said first grooved pulley being configured to receive said first pulley member. transmission, and said first transmission member being configured to transmit a torque between the first grooved pulley and the clutch module;
  • the transmission system comprises a second gearwheel and a second torque transmission member, said second gearwheel being coupled in rotation to the connecting hub, and said second transmission member being able to transmit a torque between the second gearwheel and a motor device.
  • the transmission system comprises a second pulley to a groove and a second torque transmitting member, said second grooved pulley being rotatably coupled to the connecting hub, said second grooved pulley being configured to receive said second transmission member, and said second transmission member being configured to transmit a second transmission member; torque between the second sheave pulley and a driving device.
  • the engine device is an air conditioning module, a power steering module, or any other device requiring to be powered during a stop of an internal combustion engine;
  • the first transmission member and / or the second transmission member is for example of the type of a chain, a belt, a gear;
  • the clutch module is advantageously of the type of a wet clutch or of the type of a dry clutch;
  • the clutch module comprises a clutch
  • the clutch module contains two clutches.
  • the two clutches may be arranged relative to each other in an axial configuration, one being positioned forward with respect to the other.
  • the two clutches may be arranged relative to each other in a radial configuration, one being positioned radially outwardly relative to the other;
  • the clutch module contains three clutches.
  • the three clutches can be arranged relative to each other in an axial configuration, or in a radial configuration or finally in a combination of axial and radial configurations.
  • FIGURE 1 is an axial sectional view of an embodiment of a drive system according to the first aspect of the invention
  • FIG. 2 is a perspective view of an exemplary embodiment of a training module according to the invention
  • FIG. 3 is a perspective view of an exemplary embodiment of a transmission system according to the second aspect of the invention.
  • the drive system 44 comprises (i) a rotary electric machine 1, in particular for generating a motor torque, and (ii) a drive module 5 for transmitting the motor torque generated by the rotary electric machine (1) to a motor torque transmission member which will be described later with reference to Figures 2 and 3.
  • the rotating electrical machine 1 comprises a stator 2, a rotor 3 rotatable about an axis of rotation O relative to the stator 2.
  • the electric machine rotating 1 also comprises a transmission shaft 4, rotatably coupled to the rotor 3, said transmission shaft 4 extending axially through the rotating electrical machine 1 on the one hand, and outside of said rotary electric machine 1 in the direction of the drive module 5.
  • the transmission shaft 4 makes it possible to transmit the motor torque generated by the rotating electrical machine to the drive module 5.
  • the transmission shaft 4 must be held radially and axially between the rotary electric machine 1 and the drive module 5.
  • 3 bearings are used to effect the coupling between the transmission shaft and, on the one hand the rotating electrical machine 1 and, on the other hand, the drive module 5, leading a hyperstatic assembly of the transmission shaft 4 whose disadvantages have been described above.
  • the invention aims to simplify such an assembly by reducing the number of bearings to allow an isostatic assembly of the transmission shaft 4 between the rotary electrical machine 1 and the drive module 5.
  • the drive system 44 according to the first aspect of the invention comprises a device 55 which makes it possible to maintain the transmission shaft 4 between the rotary electrical machine 1 and the drive module 5, said device 55 comprising exactly two bearings 60 - said first bearing 6 and second bearing 60 - in order to radially hold the transmission shaft 4.
  • the first bearing 6, for example of the single row type of ball, is positioned axially at a first end 7 of the transmission shaft 4, and more particularly on the opposite side to the drive module 5 with respect to the rotating electrical machine. 1.
  • An inner ring of the first bearing 6 is in radial abutment against a cylindrical face of the transmission shaft 4, and an outer ring of the first bearing 6 is in radial abutment against the rotating electrical machine 1, thus making it possible to constrain at least radially the position of the transmission shaft 4 at its first axial end 7.
  • the first bearing 6 is advantageously in axial abutment against a shoulder 8 of the transmission shaft 4, said shoulder 8 extending radially towards outside. More specifically, the first bearing 6 is in axial abutment against the shoulder 8 via its inner ring only. The shoulder 8 thus forms an axial stop element of the first bearing 6 with respect to the transmission shaft 4.
  • the shoulder 8 of the transmission shaft 4 thus delimits an end surface 41 of diameter smaller than a bearing surface 42 of said transmission shaft 4 taken at the level of the rotor 3 of the rotary electric machine 1.
  • the transmission shaft 4 has a second axial end 70 located on the side of the drive module 5.
  • the drive module 5 comprises a housing 33.
  • the housing 33 comprises a first half-shell 9 and a second half-shell 10 which will be described later.
  • the first and second half-shells form between them a volume 11 housing a connecting hub 12.
  • the connecting hub 12 is rotatably coupled to the transmission shaft 4 of the rotary electric machine 1 by means of rotating coupling elements.
  • the transmission shaft 4 comprises first rotation coupling elements 411, for example of the type of axial splines distributed circumferentially around the transmission shaft 4 with respect to the axis of rotation. rotation O; and the connecting hub 12 comprises second rotational coupling elements 121, for example of the type of axial splines distributed circumferentially around the connecting hub 12 with respect to the axis of rotation O.
  • the connecting hub 12 comprises an axial elongation bearing surface 14 which extends from the portion of said connecting hub 12 which comprises the second rotating coupling elements 121 towards the rotating electrical machine 1.
  • An outer face of the span 14 of axial elongation 14 is located radially inwardly of the portion of the connecting hub 12 located at the second rotational coupling elements 12, thereby forming a shoulder 16 of radial elongation.
  • the second bearing 60 is engaged with the axial elongation range 14 on the one hand, and with the shoulder 16 on the other hand. More particularly, the inner ring 15 of the second bearing 60 is in radial abutment on the outer radial face of the bearing surface 14 of the connecting hub 12. Furthermore, the second bearing 60 bears axially against the shoulder 60. More particularly, a rear face AR of the inner ring of the second bearing 60 is in axial abutment against the shoulder 16, thus making it possible to achieve an axial stop of the second bearing 60 towards the rear AR and with respect to the connecting hub 12.
  • Each half-shell 9, 10 extends radially beyond the transmission shaft 4 and the connecting hub 12 so as to form a closed volume inside which the connecting hub 12 and the transmission of torque which will be described later with reference to FIG.
  • the first half-shell 9 of the housing 33 comprises a heel 61 at its inner radial end.
  • the heel 61 is in radial abutment against the second bearing 60, for example of the type of a double-row ball bearing.
  • the heel 61 of the first half-shell 9 comprises a radial elongation bearing surface 17 which makes it possible to carry out an axial rearward stop AR of said first half-shell 9 .
  • said heel 61 comprises an axial elongation bearing surface 131 which extends axially forward AV towards the rotating electrical machine 1 and which makes it possible to form a groove 13 which extends circumferentially around the transmission shaft 4.
  • the groove 13 is situated axially at a front end AV of the drive module 5 and against the second bearing 60 Even more particularly, the groove 13 is delimited radially outwards by the axial elongation bearing surface 131, and said groove 13 is radially open radially inwards towards the axial elongation bearing surface 14 of the hub. link 12.
  • the axial elongation range 131 of the bead 61 is advantageously located between an inner ring and an outer ring of the second bearing 60.
  • the first half-shell 9 of the housing 33 of the drive module 5 comprises a sealing member 77 configured to provide a seal between the housing 33 and the connecting hub 12.
  • the sealing member 77 comprises a seal 18 inserted into the groove 13 of the first half-shell 9. More particularly, an inner radial face of the seal 18 is in radial abutment against the radial face external of the axial elongation span 14 of the connecting hub 12 on the one hand, and in radial abutment against the axial elongation range 131 of the heel 61 of the first half-shell 9.
  • the seal 18 is advantageously of the type of a dynamic seal, and more particularly of the type of a lip seal.
  • the drive module 15 comprises a first toothed wheel 20 and a second gear 21 for transmitting the torque generated by the rotating electrical machine 1 to a clutch module not shown in FIG. 1 by means of a first gear wheel. torque transmission member 200 and respectively to a motor device not shown in Figure 1 through a second torque transmission member 210.
  • the first torque transmission member 200 is preferably a first belt 201; and / or the second torque transmission member 210 is advantageously a second belt 211.
  • the connecting hub 12 and the transmission shaft 4 are fixed integrally to each other by means of a fastener 22 located at the second axial end of the transmission shaft 4.
  • the transmission system 66 comprises a drive system 44 according to the first aspect of the invention and as described above.
  • the drive system 44 illustrated in FIG. 3 comprises the rotary electrical machine 1 and the drive module 5.
  • the transmission system 66 further comprises a clutch module 30 coupled in rotation to the driving system via at least one torque transmission member 200, 210, as previously described.
  • the drive system 44 comprises the transmission shaft 4 which connects the rotating electrical machine 1 to the drive module 5 in order to transmit the torque generated by said rotating electrical machine 1 to said drive module.
  • the transmission shaft 4 is parallel to an axis of rotation O 'of the clutch module 30, so that there is a non-zero distance D separating said transmission shaft 4 from said axis of rotation.
  • O 'of the clutch module 30, the distance D being taken in a direction perpendicular to said axis of rotation O' of the clutch module 30. This architecture is said to be parallel.
  • the invention relates in particular to a drive system 44 of a torque transmission member for a hybrid drive train of a motor vehicle.
  • the drive system 44 comprises a rotating electrical machine 1, a drive module 5 and a device 55 for supporting the radial forces of a transmission shaft 4 of the rotating electrical machine 1.
  • the device 55 comprising exactly two bearings 6, 60 in order to eliminate a hyperstatism during the assembly of the transmission shaft 4 in the drive system 44.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention relates to a driving system (44) for a torque-transmitting body for a hybrid traction chain, particularly for a motor vehicle. The driving system (44) according to the invention comprises a driving module (5) comprising a housing (33) comprising two half-shells (9, 10) defining, between each other, a space containing a connecting hub (12), a rotating electrical machine (1) comprising a stator (2), a rotor (3) that can be rotatably moved in relation to the stator (3) and a drive shaft (4) which is rotatably coupled to the rotor (3) and extends axially from the rotating electrical machine (1) towards the driving module (5), and a device (55) designed to support radial forces of the drive shaft (4) in relation to the rotating electrical machine (1) and the driving module (5), said device (55) comprising exactly two bearings (6, 60) for eliminating static indeterminacy during the assembly of the drive shaft (4) in the driving system (44). The drive shaft (4) is rotatably coupled to the connecting hub (12) of the driving module (5), said connecting hub (12) extending axially between the second end (70) of the drive shaft (4) and the rotating electrical machine (1). The first half-shell (9) of the housing (33) of the driving module (5) comprises a sealing body (77) designed to ensure tightness between the housing (33) and the connecting hub (12). The invention also relates to a transmission system (66) for a hybrid traction chain comprising such a driving system (44).

Description

« SYSTEME D’ENTRAINEMENT POUR UN VEHICULE AUTOMOBILE HYBRIDE ET SYSTEME DE TRANSMISSION COMPRENANT UN TEL SYSTEME  "DRIVE SYSTEM FOR A HYBRID AUTOMOBILE VEHICLE AND TRANSMISSION SYSTEM COMPRISING SUCH A SYSTEM
D’ENTRAINEMENT »  TRAINING
Le contexte de la présente invention est celui des transmissions pour véhicules automobiles, et notamment aux transmissions de chaînes de traction hybrides. L’invention a trait à un système d’entrainement d’un organe de transmission, ledit système d’entrainement étant intégré à un système de transmission d’une chaîne de traction hybride destinée à être disposée entre un moteur à combustion interne et une boîte de vitesses d’un véhicule automobile. L’invention a aussi trait à un système de transmission comprenant un tel système d’entrainement. The context of the present invention is that of transmissions for motor vehicles, including transmissions of hybrid powertrains. The invention relates to a drive system of a transmission member, said drive system being integrated into a transmission system of a hybrid traction chain intended to be arranged between an internal combustion engine and a box. of a motor vehicle. The invention also relates to a transmission system comprising such a drive system.
Dans l’état de la technique, il est connu des véhicules automobiles de type hybride comprenant un système d’entrainement disposé entre un moteur à combustion interne et une boîte de vitesses. Le système d’entrainement comprend une machine électrique tournante et un module d’entrainement afin de permettre la transmission d’un couple entre la machine électrique tournante et la boite de vitesse. Ainsi, un arbre de transmission de la boite de vitesse peut être couplé sélectivement, par l’intermédiaire d’un embrayage, à la machine électrique tournante et/ou au moteur à combustion interne. Il est ainsi possible de couper le moteur à combustion interne à chaque arrêt du véhicule automobile, et de le redémarrer grâce à la machine électrique tournante. La machine électrique tournante peut également constituer un frein électrique ou apporter un surplus d’énergie au moteur à combustion interne pour l’assister ou éviter que celui-ci ne cale. Lorsque le moteur à combustion interne est en fonctionnement, la machine électrique tournante peut jouer le rôle d’un alternateur. La machine électrique tournante peut également assurer l’entraînement du véhicule indépendamment du moteur à combustion interne. In the state of the art, it is known hybrid motor vehicles comprising a drive system disposed between an internal combustion engine and a gearbox. The drive system includes a rotating electrical machine and a drive module to allow transmission of torque between the rotating electrical machine and the gearbox. Thus, a transmission shaft of the gearbox can be selectively coupled, via a clutch, to the rotating electrical machine and / or the internal combustion engine. It is thus possible to cut the internal combustion engine at each stop of the motor vehicle, and restart it with the rotating electric machine. The rotating electrical machine can also constitute an electric brake or bring a surplus of energy to the internal combustion engine to assist or prevent it from stalling. When the internal combustion engine is in operation, the rotating electrical machine can act as an alternator. The rotating electrical machine can also drive the vehicle independently of the internal combustion engine.
Dans le contexte de la présente invention, le système d’entrainement est déporté par rapport au module d’embrayage, c'est-à-dire que Taxe de l’arbre de transmission de la machine électrique tournante est décalé par rapport à l’axe de l’au moins un embrayage du module d’embrayage. Dans un tel système d’entrainement connu, un arbre de transmission reliant la machine électrique tournante au module de transmission est classiquement maintenu par trois paliers. Ces trois paliers sont positionnés de manière coaxiale les uns par rapport aux autres, un premier palier étant situé au niveau du module d’entrainement, et deux autres paliers étant situés axialement de part et d’autre de la machine électrique tournante. Ce type de maintien de l’arbre de transmission par trois paliers est hyperstatique : l’orientation de l’arbre de transmission est sur-définie par les trois couples possibles de paliers. Dès lors, afin de garantir un fonctionnement optimal du système de transmission, et d’éviter un blocage de l’arbre de transmission et/ou son usure prématurée, les systèmes d’entrainement connus imposent des tolérances de fabrication et de montage très serrées sur les pièces afférentes au maintien de l’arbre de transmission entre la machine électrique tournante et le module d’entrainement. Consécutivement, les coûts de fabrication des systèmes d’entrainement connus sont trop élevés et les risques de panne voire de casse de l’arbre de transmission sont élevés du fait de l’hyperstatisme. In the context of the present invention, the drive system is offset relative to the clutch module, that is to say that the transmission shaft tax of the rotating electrical machine is shifted relative to the axis of the at least one clutch of the clutch module. In such a known drive system, a transmission shaft connecting the rotating electrical machine to the transmission module is conventionally maintained by three bearings. These three bearings are positioned coaxially with each other, a first bearing being located at the drive module, and two other bearings being located axially on either side of the electrical machine. rotating. This type of maintenance of the three-stage transmission shaft is hyperstatic: the orientation of the transmission shaft is over-defined by the three possible pairs of bearings. Therefore, in order to ensure optimum operation of the transmission system, and to avoid blocking of the transmission shaft and / or its premature wear, the known drive systems impose very tight manufacturing and mounting tolerances on parts relating to the maintenance of the transmission shaft between the rotating electrical machine and the drive module. Consecutively, the manufacturing costs of the known drive systems are too high and the risks of breakdown or even breakage of the drive shaft are high because of the hyperstatism.
La présente invention a pour objet de proposer un nouveau système d’entrainement afin de répondre au moins en grande partie aux problèmes précédents et de conduire en outre à d’autres avantages. The object of the present invention is to propose a new training system in order to at least largely meet the above problems and to furthermore lead to other advantages.
Un autre but de l’invention est d’éliminer l’hyperstatisme du montage de l’arbre de transmission entre la machine électrique tournante et le module d’embrayage. Another object of the invention is to eliminate the hyperstatism of the mounting of the transmission shaft between the rotating electrical machine and the clutch module.
Enfin, un autre but de l’invention est de réduire les coûts de fabrication d’un tel système d’entrainement. Finally, another object of the invention is to reduce the manufacturing costs of such a drive system.
L’invention y parvient, selon un premier aspect, grâce à un système d’entrainement d’un organe de transmission de couple pour une chaîne de traction hybride, ledit système comprenant : The invention achieves, in a first aspect, through a drive system of a torque transmission member for a hybrid power train, said system comprising:
un module d’entrainement comprenant un boîtier ;  a training module comprising a housing;
une machine électrique tournante comprenant :  a rotating electric machine comprising:
o un stator ;  o a stator;
o un rotor mobile en rotation par rapport au stator ;  a rotor movable in rotation with respect to the stator;
o un arbre de transmission couplé en rotation au rotor et s’étendant axialement depuis la machine électrique tournante vers le module d’entrainement,  a transmission shaft rotatably coupled to the rotor and extending axially from the rotating electrical machine to the drive module,
le système d’entrainement comprenant un dispositif configuré pour supporter des efforts radiaux de l’arbre de transmission par rapport à la machine électrique tournante et au module d’entrainement, ledit dispositif comprenant exactement deux paliers. the drive system comprising a device configured to support radial forces of the transmission shaft with respect to the rotating electrical machine and the drive module, said device comprising exactly two bearings.
Conformément au premier aspect de l’invention, l’arbre de transmission du système d’entrainement est couplé en rotation avec la machine électrique tournante d’une part et avec le module d’entrainement d’autre part. Consécutivement, l’arbre de transmission s’étend axialement entre la machine électrique tournante et le module d’entrainement. En d’autres termes, le module d’entrainement et la machine électrique tournante sont positionnés axialement l’un par rapport à l’autre, l’arbre de transmission permettant de transmettre un couple entre ladite machine électrique tournante et ledit module d’entrainement. According to the first aspect of the invention, the drive shaft of the drive system is coupled in rotation with the rotating electrical machine on the one hand and with the drive module on the other hand. Subsequently, the transmission shaft extends axially between the rotating electrical machine and the drive module. In in other words, the drive module and the rotating electrical machine are positioned axially relative to each other, the transmission shaft for transmitting a torque between said rotating electrical machine and said drive module.
Cette configuration selon le premier aspect de l’invention permet de définir une unique orientation de l’arbre de transmission via les deux paliers du dispositif du système d’entrainement, supprimant ainsi l’hyperstatisme et accordant une certaine souplesse au système d’entrainement. Cette souplesse permet d’absorber les efforts dynamiques radiaux dus par exemple aux acyclismes du moteur à combustion interne, aux variations de sens du couple transmis depuis ou vers la machine électrique tournante, aux variations de couple, ou tout autre effort dynamique. En outre, cette configuration permet avantageusement de réduire les coûts de fabrication d’un tel système d’entrainement et de simplifier son assemblage. This configuration according to the first aspect of the invention makes it possible to define a single orientation of the transmission shaft via the two bearings of the device of the drive system, thus eliminating the hyperstatism and granting a certain flexibility to the drive system. This flexibility makes it possible to absorb radial dynamic forces due, for example, to the acyclisms of the internal combustion engine, to variations in the direction of the torque transmitted to or from the rotating electrical machine, to torque variations, or to any other dynamic effort. In addition, this configuration advantageously reduces the manufacturing costs of such a drive system and simplify assembly.
Dans la suite de la description et dans les revendications, on utilisera à titre non limitatif et afin d'en faciliter la compréhension, les termes : In the remainder of the description and in the claims, the following terms will be used in a nonlimiting manner and in order to facilitate understanding thereof:
- « avant » ou « arrière » selon la direction par rapport à une orientation axiale déterminée par l’axe O principal de l’arbre de transmission de la machine électrique, « l’arrière » désignant la partie située à droite des figures, du côté du module d'entrainement, et « l'avant » désignant la partie gauche des figures, du côté de la machine électrique tournante ; et  - "front" or "rear" in the direction relative to an axial orientation determined by the main axis O of the transmission shaft of the electric machine, "the rear" designating the part to the right of the figures, the side of the drive module, and "the front" designating the left side of the figures, the side of the rotating electrical machine; and
« intérieur / interne » ou « extérieur / externe » par rapport à l’axe O et suivant une orientation radiale, orthogonale à ladite orientation axiale, « l’intérieur » désignant une partie proximale de l’axe O et « l’extérieur » désignant une partie distale de l’axe O.  "Inner / inner" or "outer / outer" with respect to the axis O and in a radial orientation, orthogonal to said axial orientation, "the interior" designating a proximal portion of the axis O and "the outside" designating a distal part of the axis O.
Le système d’entrainement conforme au premier aspect de l’invention comprend avantageusement au moins un des perfectionnements ci-dessous, les caractéristiques techniques formant ces perfectionnements pouvant être prises seules ou en combinaison : The training system according to the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
- un premier palier est positionné axialement au niveau d’une première extrémité axiale de l’arbre de transmission, ladite première extrémité de l’arbre de transmission étant positionnée à l’opposé du module d’entrainement par rapport à la machine électrique tournante. Cette configuration permet avantageusement d’augmenter la distance axiale entre le premier palier et le module d’entrainement afin de mieux définir l’orientation de l’arbre de transmission ; - un deuxième palier est positionné axialement au niveau du module d’entrainement au niveau d’une deuxième extrémité axiale de l’arbre de transmission, ladite deuxième extrémité étant située du côté du module d’entrainement. Plus généralement, le deuxième palier est situé au niveau du module d’entrainement, c’est-à-dire axialement entre la deuxième extrémité axiale de l’arbre de transmission et la machine électrique tournante. Cette configuration avantageuse permet d’augmenter la distance axiale entre le deuxième palier et la machine électrique tournante afin de mieux définir l’orientation de l’arbre de transmission ; - A first bearing is positioned axially at a first axial end of the transmission shaft, said first end of the transmission shaft being positioned opposite the drive module relative to the rotating electrical machine. This configuration advantageously makes it possible to increase the axial distance between the first bearing and the drive module in order to better define the orientation of the transmission shaft; - A second bearing is positioned axially at the drive module at a second axial end of the transmission shaft, said second end being located on the side of the drive module. More generally, the second bearing is located at the drive module, that is to say axially between the second axial end of the transmission shaft and the rotating electrical machine. This advantageous configuration makes it possible to increase the axial distance between the second bearing and the rotating electrical machine so as to better define the orientation of the transmission shaft;
- selon une première variante de réalisation, le premier palier est situé radialement à l’intérieur du deuxième palier. À cet effet, l’arbre de transmission comprend une première portée contre laquelle le premier palier est en appui radial et dont un diamètre est inférieur à un diamètre d’une deuxième portée de l’arbre de transmission contre laquelle le deuxième palier est en appui radial. Selon une deuxième variante de réalisation, le deuxième palier est situé radialement à l'intérieur du premier palier. À cet effet, le diamètre de la première portée de l’arbre de transmission contre laquelle le premier palier est en appui radial est supérieur au diamètre de la deuxième portée dudit arbre de transmission contre laquelle le deuxième palier est en appui radial. Selon une troisième variante de réalisation, les premier et deuxième paliers sont situés à une même distance radiale par rapport à l’arbre de transmission. Dans chacune des variantes de réalisation, les paliers sont situés radialement à l’extérieur de l’arbre de transmission, une bague intérieure de chaque palier étant en appui radial contre l’arbre de transmission. Cet appui radial peut être direct ou indirect, une pièce intermédiaire étant interposée radialement entre la bague intérieure d’au moins un des paliers et l’arbre de transmission ; - In a first embodiment, the first bearing is located radially inside the second bearing. For this purpose, the transmission shaft comprises a first bearing surface against which the first bearing is radially supported and a diameter of which is less than a diameter of a second bearing surface of the transmission shaft against which the second bearing bears radial. According to a second variant embodiment, the second bearing is located radially inside the first bearing. For this purpose, the diameter of the first bearing surface of the drive shaft against which the first bearing is radially supported is greater than the diameter of the second bearing of said drive shaft against which the second bearing is in radial support. According to a third variant embodiment, the first and second bearings are situated at the same radial distance with respect to the transmission shaft. In each of the alternative embodiments, the bearings are located radially outside the transmission shaft, an inner ring of each bearing being in radial abutment against the transmission shaft. This radial support may be direct or indirect, an intermediate part being interposed radially between the inner ring of at least one of the bearings and the transmission shaft;
- selon une variante particulière de réalisation, le premier et/ou le deuxième palier est/sont du type d’un roulement à billes comprenant au moins une rangée de billes ;- According to a particular embodiment, the first and / or the second bearing is / are of the type of a ball bearing comprising at least one row of balls;
- l’arbre de transmission comprend un élément d’arrêt axial du premier palier. Plus particulièrement l’arbre de transmission comprend un épaulement s’étendant radialement vers l’extérieur et délimitant la première portée de l’arbre de transmission. Selon une première variante de réalisation, l’épaulement est situé dans une position axialement intermédiaire entre le premier palier et le module d’entrainement. Selon une deuxième variante de réalisation, l’épaulement est situé du côté de la première extrémité axiale de l’arbre de transmission, le premier palier étant situé dans une position axialement intermédiaire entre ledit épaulement et le module d’entrainement. De manière avantageuse, pour chacune des variantes de réalisation, le premier palier est en appui axial contre l’épaulement de l’arbre de transmission, une face avant ou arrière de la bague intérieure du premier palier étant en appui axial contre l’épaulement ; - The transmission shaft comprises an axial stop element of the first bearing. More particularly, the transmission shaft comprises a shoulder extending radially outwards and delimiting the first bearing surface of the transmission shaft. According to a first embodiment, the shoulder is located in an axially intermediate position between the first bearing and the drive module. According to a second alternative embodiment, the shoulder is located on the side of the first axial end of the transmission shaft, the first bearing being located in an axially intermediate position between said shoulder and the drive module. Advantageously, for each of the variants of realization, the first bearing is in axial support against the shoulder of the transmission shaft, a front or rear face of the inner ring of the first bearing being in axial abutment against the shoulder;
- l’arbre de transmission est couplé en rotation à un moyeu de liaison du module d’entrainement, ledit moyeu de liaison s’étendant axialement entre la deuxième extrémité de l’arbre de transmission et la machine électrique tournante ;  - The transmission shaft is rotatably coupled to a connecting hub of the drive module, said connecting hub extending axially between the second end of the transmission shaft and the rotating electrical machine;
- le moyeu de liaison comporte une portée d’élongation axiale qui s’étend en direction de la première extrémité de l’arbre de transmission. En particulier, le deuxième palier est situé axialement au niveau de la portée d’élongation axiale du moyeu de liaison, de sorte qu’une bague intérieure dudit deuxième palier est en appui radial contre ladite portée d’élongation axiale. Cette configuration avantageuse permet d’améliorer la tenue radiale de l’arbre de transmission au niveau du module d’entrainement ;  the connecting hub comprises an axial elongation bearing which extends in the direction of the first end of the transmission shaft. In particular, the second bearing is located axially at the level of axial elongation of the connecting hub, so that an inner ring of said second bearing is in radial abutment against said axial elongation range. This advantageous configuration makes it possible to improve the radial resistance of the transmission shaft at the level of the drive module;
- le boîtier du module d’entrainement comprend deux demi-coquilles délimitant entre elles un volume dans lequel est logé le moyeu de liaison. Les deux demi-coquilles sont préférablement fixées solidairement l’une à l’autre afin de former un volume fermé entre elles ;  - The housing of the drive module comprises two half-shells delimiting between them a volume in which is housed the connecting hub. The two half-shells are preferably fixed integrally to one another in order to form a closed volume between them;
- les demi-coquilles formant le boîtier d’entrainement sont préférablement situées axialement en regard l’une de l’autre, une première demi-coquille étant située axialement du côté de la machine électrique tournante, et une deuxième demi- coquille étant située axialement du côté de la deuxième extrémité de l’arbre de transmission. Plus particulièrement, la première demi-coquille est avantageusement située à l’aplomb du deuxième palier afin de réduire l’encombrement radial du module d’entrainement. De manière avantageuse, la première demi-coquille comprend un talon formant son extrémité radiale intérieure, ledit talon étant en appui radial contre une bague extérieure du deuxième palier ;  - The half-shells forming the drive housing are preferably located axially opposite one another, a first half-shell being located axially on the side of the rotating electrical machine, and a second half-shell being located axially on the side of the second end of the drive shaft. More particularly, the first half-shell is advantageously located in line with the second bearing to reduce the radial size of the drive module. Advantageously, the first half-shell comprises a heel forming its inner radial end, said heel bearing radially against an outer ring of the second bearing;
- la première demi-coquille du boîtier du module d’entrainement comprend un organe d’étanchéité configuré pour assurer une étanchéité entre le boîtier et le moyeu de liaison. Par étanchéité, on entend notamment de limiter, et préférentiellement empêcher, la fuite d’un fluide hydraulique depuis l’intérieur du volume délimité par les deux demi-coquilles vers l’extérieur. Cette configuration permet avantageusement de lubrifier les différents composants du module d’entrainement, et en particulier le deuxième palier ; - l’organe d’étanchéité comprend préférentiellement un joint d’étanchéité qui est simultanément en contact avec, d’une part, la demi-coquille située au niveau du deuxième palier et, d’autre part, l’arbre de transmission ou le moyeu de liaison. De manière avantageuse, le joint d’étanchéité est du type d’un joint dynamique, tel que par exemple un joint à lèvre ; - The first half-shell of the housing of the drive module comprises a sealing member configured to provide a seal between the housing and the connecting hub. Sealing means in particular to limit, and preferably prevent, the leakage of a hydraulic fluid from inside the volume defined by the two half-shells outwardly. This configuration advantageously makes it possible to lubricate the various components of the drive module, and in particular the second bearing; the sealing member preferably comprises a seal which is simultaneously in contact with, on the one hand, the half-shell situated at the level of the second bearing and, on the other hand, the transmission shaft or the link hub. Advantageously, the seal is of the type of a dynamic seal, such as for example a lip seal;
- la première demi-coquille du boîtier du module d’entrainement comprend une gorge située au niveau d’une extrémité radiale intérieure de ladite première demi-coquille. De manière avantageuse, le joint d’étanchéité est logé dans la gorge afin de réduire l’encombrement radial de l’organe d’étanchéité et/ou du module d’entrainement. La gorge est avantageusement formée par un contour circonférentiel autour de l’axe de rotation O. la gorge est ouverte radialement vers l’intérieur, de sorte que le joint d’étanchéité, logé dans la gorge, puisse être mis en appui contre la face en regard de l’arbre de transmission ou du moyeu de liaison ;  the first half-shell of the housing of the drive module comprises a groove located at an inner radial end of said first half-shell. Advantageously, the seal is housed in the groove to reduce the radial size of the sealing member and / or the drive module. The groove is advantageously formed by a circumferential contour around the axis of rotation O. the groove is open radially inwards, so that the seal, housed in the groove, can be pressed against the face opposite the drive shaft or the connecting hub;
- la gorge de la première demi-coquille est située dans une position axialement intermédiaire entre la machine électrique tournante et le deuxième palier ;  - The groove of the first half-shell is located in an axially intermediate position between the rotating electrical machine and the second bearing;
- comme évoqué précédemment, un joint d’étanchéité est positionné dans la gorge de la première demi-coquille, ledit joint d’étanchéité et ladite gorge formant l’organe d’étanchéité.  - As mentioned above, a seal is positioned in the groove of the first half-shell, said seal and said groove forming the sealing member.
- l’arbre de transmission comprend des premiers éléments de couplage en rotation et le moyeu de liaison comprend des deuxièmes éléments de couplage en rotation, lesdits premiers et deuxièmes éléments de couplages en rotation permettant collectivement de coupler en rotation l’arbre de transmission au moyeu de liaison. Plus particulièrement, les premiers éléments de couplage en rotation sont situés sur une face radialement externe de l’arbre de transmission, et les deuxièmes éléments de couplage en rotation sont situés sur une face radialement interne du moyeu de liaison.  the transmission shaft comprises first rotational coupling elements and the connecting hub comprises second rotational coupling elements, said first and second rotational coupling elements collectively making it possible to couple in rotation the transmission shaft to the hub; link. More particularly, the first rotational coupling elements are located on a radially outer face of the transmission shaft, and the second rotational coupling elements are located on a radially inner face of the connecting hub.
- selon une première alternative, les premiers éléments de couplage en rotation sont avantageusement du type de cannelures, dites premières cannelures, qui s’étendent axialement le long d’une partie de l’arbre de transmission ; et les deuxièmes éléments de couplage en rotation sont des cannelures, dites deuxièmes cannelures, qui s’étendent axialement le long d’une partie du moyeu de liaison. Les premières et deuxièmes cannelures collaborent ensemble par engagement de formes complémentaires. Préférentiellement encore, les premières cannelures sont du type mâle et les deuxièmes cannelures sont du type femelle. Alternativement, les premières cannelures sont du type femelle et les premières cannelures sont du type mâle. according to a first alternative, the first rotational coupling elements are advantageously of the type of splines, called first splines, which extend axially along a portion of the transmission shaft; and the second rotational coupling members are splines, called second splines, which extend axially along a portion of the connecting hub. The first and second flutes collaborate together by engagement of complementary shapes. Preferably again, the first splines are of the male type and the second splines are of the female type. Alternately, the first grooves are of the female type and the first grooves are of the male type.
- selon une deuxième alternative de réalisation, l’arbre de transmission comprend une clavette formant les premiers éléments de couplage en rotation, ladite clavette coopérant avec une rainure de forme complémentaire ménagée sur la face radiale interne du moyeu de liaison, ladite rainure formant les deuxièmes éléments de couplage en rotation. Alternativement, les premiers éléments de couplage en rotation sont formés par la rainure sur une face externe de l’arbre de transmission, et les deuxièmes éléments de couplage en rotation sont formés par une clavette ; according to a second alternative embodiment, the transmission shaft comprises a key forming the first rotational coupling elements, said key cooperating with a complementary shaped groove formed on the inner radial face of the connecting hub, said groove forming the second coupling elements in rotation. Alternatively, the first rotational coupling elements are formed by the groove on an outer face of the transmission shaft, and the second rotational coupling elements are formed by a key;
- la portée d’élongation axiale du moyeu de liaison est délimitée axialement à son extrémité non libre par un épaulement s’étendant radialement vers l’extérieur, ledit épaulement permettant un arrêt axial dudit moyeu de liaison contre le deuxième palier ; the axial elongation span of the connecting hub is delimited axially at its non-free end by a shoulder extending radially outwards, said shoulder allowing axial stop of said connecting hub against the second bearing;
- le moyeu de liaison est maintenu axialement contre l’arbre de transmission par un organe d’arrêt axial. Plus particulièrement, l’organe d’arrêt axial est positionné axialement au niveau de la deuxième extrémité de l’arbre de transmission ;  - The connecting hub is held axially against the transmission shaft by an axial stop member. More particularly, the axial stop member is positioned axially at the second end of the transmission shaft;
- l’arbre de transmission de la machine électrique tournante est coaxial avec l’axe du moyeu de liaison. Préférentiellement, le centrage de la machine électrique tournante sur le moyeu de liaison peut être assuré par les premières éléments de couplage en rotation de l’arbre de transmission coopérant avec les deuxièmes éléments de couplage en rotation du moyeu de liaison. Cette configuration avantageuse permet de réduire un jeu radial entre l’arbre de transmission et le moyeu de liaison. Alternativement, l’arbre de transmission de la machine électrique tournante peut être couplé en rotation au moyeu de liaison par l’intermédiaire d’un joint homocinétique, tel qu’un joint de type Oldham. L’utilisation de ce type de joint permet de ne pas avoir à centrer radialement l’arbre de transmission de la machine électrique tournante par rapport à l’axe du moyeu de liaison. L’arbre de transmission de la machine électrique est alors couplé en rotation et en translation à une première face du joint homocinétique, ladite première face étant orientée axialement vers la machine électrique tournante, et le moyeu de liaison est couplé en rotation et en translation à une deuxième face du joint homocinétique, ladite deuxième face étant orientée axialement vers le moyeu de liaison. Le centrage du moteur électrique sur le moyeu de liaison peut également être effectué par l’utilisation d’un joint souple. L’utilisation de ce type de joint permet de ne pas avoir à centrer radialement l’arbre de transmission de la machine électrique tournante par rapport é l’axe du moyeu de liaison. - The transmission shaft of the rotating electrical machine is coaxial with the axis of the connecting hub. Preferably, the centering of the rotating electrical machine on the connection hub can be provided by the first rotational coupling elements of the transmission shaft cooperating with the second coupling elements in rotation of the connecting hub. This advantageous configuration makes it possible to reduce a radial clearance between the transmission shaft and the connecting hub. Alternatively, the transmission shaft of the rotating electrical machine can be rotatably coupled to the connecting hub via a constant velocity joint, such as an Oldham type seal. The use of this type of seal makes it possible not to have to radially center the transmission shaft of the rotating electrical machine with respect to the axis of the connecting hub. The transmission shaft of the electric machine is then coupled in rotation and in translation to a first face of the constant velocity joint, said first face being oriented axially towards the rotating electrical machine, and the connecting hub is coupled in rotation and in translation to a second face of the constant velocity joint, said second face being oriented axially towards the connecting hub. The centering of the electric motor on the connecting hub can also be effected by the use of a flexible seal. The use of this type of seal makes it possible not to have to center the shaft radially transmitting the rotating electrical machine relative to the axis of the connecting hub.
Selon un deuxième aspect, l’invention concerne un système de transmission pour chaîne de traction hybride comprenant : un système d’entrainement conforme au premier aspect de l’invention ou selon l’une quelconque de ses caractéristiques ; According to a second aspect, the invention relates to a transmission system for hybrid traction system comprising: a drive system according to the first aspect of the invention or according to any of its features;
un module d’embrayage comprenant au moins un embrayage et un système d’actionnement pour configurer l’au moins un embrayage dans une configuration embrayée ou débrayée  a clutch module comprising at least one clutch and an actuating system for configuring the at least one clutch in an engaged or disengaged configuration
des moyens de transmission de couple, pour permettre le transfert d’un couple entre le système d’entrainement et le module d’embrayage.  torque transmission means, to allow the transfer of a torque between the drive system and the clutch module.
Le système de transmission conforme au deuxième aspect de l’invention peut comprendre avantageusement au moins un des perfectionnements ci-dessous, les caractéristiques techniques formant ces perfectionnements pouvant être prises seules ou en combinaison : The transmission system according to the second aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
- les moyens de transmission de couple comprennent au moins une première roue dentée et un premier organe de transmission, ladite première roue dentée étant couplée en rotation au moyeu de liaison, et ledit premier organe de transmission étant configuré pour transmettre un couple entre la première roue dentée et le module d’embrayage. Plus particulièrement, la première roue dentée est maintenue axialement contre le moyeu de liaison par l’organe d’arrêt axial, préférentiellement d’un côté du moyeu de liaison à la machine électrique tournante. Alternativement, les moyens de transmission de couple comprennent au moins une première poulie à gorge et un premier organe de transmission, ladite première poulie à gorge étant couplée en rotation au moyeu de liaison, ladite première poulie à gorge étant configurée pour recevoir ledit premier organe de transmission, et ledit premier organe de transmission étant configuré pour transmettre un couple entre la première poulie à gorge et le module d’embrayage ; the torque transmission means comprise at least a first gear wheel and a first transmission member, said first gear wheel being coupled in rotation to the connecting hub, and said first transmission member being configured to transmit a torque between the first gear wheel toothed and the clutch module. More particularly, the first gear wheel is held axially against the connecting hub by the axial stop member, preferably on one side of the connection hub to the rotating electrical machine. Alternatively, the torque transmission means comprise at least a first grooved pulley and a first transmission member, said first grooved pulley being rotatably coupled to the connecting hub, said first grooved pulley being configured to receive said first pulley member. transmission, and said first transmission member being configured to transmit a torque between the first grooved pulley and the clutch module;
- le système de transmission comprend une deuxième roue dentée et un deuxième organe de transmission de couple, ladite deuxième roue dentée étant couplée en rotation au moyeu de liaison, et ledit deuxième organe de transmission étant apte à transmettre un couple entre la deuxième roue dentée et un périphérique moteur. Alternativement, le système de transmission comprend une deuxième poulie à gorge et un deuxième organe de transmission de couple, ladite deuxième poulie à gorge étant couplée en rotation au moyeu de liaison, ladite deuxième poulie à gorge étant configurée pour recevoir ledit deuxième organe de transmission, et ledit deuxième organe de transmission étant configuré pour transmettre un couple entre la deuxième poulie à gorge et un périphérique moteur. Plus particulièrement, le périphérique moteur est un module de climatisation, un module de direction assistée, ou tout autre périphérique nécessitant d’être alimenté lors d’un arrêt d’un moteur à combustion interne ; the transmission system comprises a second gearwheel and a second torque transmission member, said second gearwheel being coupled in rotation to the connecting hub, and said second transmission member being able to transmit a torque between the second gearwheel and a motor device. Alternatively, the transmission system comprises a second pulley to a groove and a second torque transmitting member, said second grooved pulley being rotatably coupled to the connecting hub, said second grooved pulley being configured to receive said second transmission member, and said second transmission member being configured to transmit a second transmission member; torque between the second sheave pulley and a driving device. More particularly, the engine device is an air conditioning module, a power steering module, or any other device requiring to be powered during a stop of an internal combustion engine;
- le premier organe de transmission et/ou le deuxième organe de transmission est par exemple du type d’une chaîne, d’une courroie, d’un engrenage ;  - The first transmission member and / or the second transmission member is for example of the type of a chain, a belt, a gear;
- le module d’embrayage est avantageusement du type d’un embrayage humide ou du type d’un embrayage sec ;  the clutch module is advantageously of the type of a wet clutch or of the type of a dry clutch;
- selon un premier mode de réalisation, le module d’embrayage comprend un embrayage ;  according to a first embodiment, the clutch module comprises a clutch;
- selon un deuxième mode de réalisation, le module d’embrayage contient deux embrayages. Les deux embrayages peuvent être disposés l’un par rapport à l’autre selon une configuration axiale, l’un étant positionné en avant par rapport à l’autre. Alternativement, les deux embrayages peuvent être disposés l’un par rapport à l’autre selon une configuration radiale, l’un étant positionné radialement à l’extérieur par rapport à l’autre ;  according to a second embodiment, the clutch module contains two clutches. The two clutches may be arranged relative to each other in an axial configuration, one being positioned forward with respect to the other. Alternatively, the two clutches may be arranged relative to each other in a radial configuration, one being positioned radially outwardly relative to the other;
- selon un troisième mode de réalisation, le module d’embrayage contient trois embrayages. Les trois embrayages peuvent être disposés les uns par rapport aux autres selon une configuration axiale, ou encore selon une configuration radiale ou enfin selon une combinaison des configurations axiales et radiales.  according to a third embodiment, the clutch module contains three clutches. The three clutches can be arranged relative to each other in an axial configuration, or in a radial configuration or finally in a combination of axial and radial configurations.
Des modes de réalisation variés de l’invention sont prévus, intégrant selon l’ensemble de leurs combinaisons possibles les différentes caractéristiques optionnelles exposées ici. Various embodiments of the invention are provided, integrating, according to all of their possible combinations, the various optional features set forth herein.
D’autres caractéristiques et avantages de l’invention apparaîtront encore au travers de la description qui suit d’une part, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels : Other characteristics and advantages of the invention will become apparent from the description which follows, on the one hand, and from several exemplary embodiments given by way of nonlimiting indication with reference to the appended schematic drawings on the other hand, on which :
- la FIGURE 1 est une vue en coupe axiale d’un exemple de réalisation d’un système d’entrainement selon le premier aspect de l’invention ; - la FIGURE 2 est une vue en perspective d’un exemple de réalisation d’un module d’entrainement selon l’invention ; - FIGURE 1 is an axial sectional view of an embodiment of a drive system according to the first aspect of the invention; FIG. 2 is a perspective view of an exemplary embodiment of a training module according to the invention;
- la FIGURE 3 est une vue en perspective d’un exemple de réalisation d’un système de transmission conforme au deuxième aspect de l’invention.  FIG. 3 is a perspective view of an exemplary embodiment of a transmission system according to the second aspect of the invention.
Les caractéristiques, les variantes et les différentes formes de réalisation de l'invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres. On pourra notamment imaginer des variantes de l’invention ne comprenant qu’une sélection de caractéristiques décrites par la suite de manière isolée des autres caractéristiques décrites, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique ou pour différencier l’invention par rapport à l’état de la technique antérieur. The features, variants and different embodiments of the invention may be associated with each other in various combinations to the extent that they are not incompatible or exclusive of each other. It will be possible to imagine variants of the invention comprising only a selection of characteristics subsequently described in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention compared in the state of the prior art.
En particulier toutes les variantes et tous les modes de réalisation décrits sont combinables entre eux si rien ne s’oppose à cette combinaison sur le plan technique. In particular, all the variants and all the embodiments described are combinable with each other if nothing stands in the way of this combination at the technical level.
Sur les figures, les éléments communs à plusieurs figures conservent la même référence. In the figures, the elements common to several figures retain the same reference.
En référence aux figures 1 et 2, un exemple de réalisation d’un système d’entrainement 44 conforme au premier aspect de l’invention est décrit. Referring to Figures 1 and 2, an exemplary embodiment of a drive system 44 according to the first aspect of the invention is described.
Le système d’entrainement 44 comprend (i) une machine électrique tournante 1 afin notamment de générer un couple moteur, et (ii) un module d’entrainement 5 afin de transmettre le couple moteur généré par la machine électrique tournante (1 ) à un organe de transmission de couple qui sera décrit ultérieurement en référence aux figures 2 et 3. La machine électrique tournante 1 comprend un stator 2, un rotor 3 mobile en rotation autour d’un axe de rotation O par rapport au stator 2. La machine électrique tournante 1 comprend également un arbre de transmission 4, couplé en rotation au rotor 3, ledit arbre de transmission 4 s’étendant axialement au travers de la machine électrique tournante 1 d’une part, et à l’extérieur de ladite machine électrique tournante 1 en direction du module d’entrainement 5. Ainsi, l’arbre de transmission 4 permet de transmettre le couple moteur généré par la machine électrique tournante au module d’entrainement 5. The drive system 44 comprises (i) a rotary electric machine 1, in particular for generating a motor torque, and (ii) a drive module 5 for transmitting the motor torque generated by the rotary electric machine (1) to a motor torque transmission member which will be described later with reference to Figures 2 and 3. The rotating electrical machine 1 comprises a stator 2, a rotor 3 rotatable about an axis of rotation O relative to the stator 2. The electric machine rotating 1 also comprises a transmission shaft 4, rotatably coupled to the rotor 3, said transmission shaft 4 extending axially through the rotating electrical machine 1 on the one hand, and outside of said rotary electric machine 1 in the direction of the drive module 5. Thus, the transmission shaft 4 makes it possible to transmit the motor torque generated by the rotating electrical machine to the drive module 5.
À cet effet, l’arbre de transmission 4 doit être maintenu radialement et axialement entre la machine électrique tournante 1 et le module d’entrainement 5. De manière connue, 3 paliers sont utilisés pour réaliser le couplage entre l’arbre de transmission et, d’une part la machine électrique tournante 1 et, d’autre part, le module d’entrainement 5, conduisant à un assemblage hyperstatique de l’arbre de transmission 4 dont les inconvénients ont été décrits précédemment. For this purpose, the transmission shaft 4 must be held radially and axially between the rotary electric machine 1 and the drive module 5. In known manner, 3 bearings are used to effect the coupling between the transmission shaft and, on the one hand the rotating electrical machine 1 and, on the other hand, the drive module 5, leading a hyperstatic assembly of the transmission shaft 4 whose disadvantages have been described above.
Conformément à son premier aspect, l’invention vise à simplifier un tel assemblage en réduisant le nombre de palier afin de permettre un assemblage isostatique de l’arbre de transmission 4 entre la machine électrique tournante 1 et le module d’entrainement 5. Pour cette raison, le système d’entrainement 44 conforme au premier aspect de l’invention comprend un dispositif 55 qui permet de maintenir l’arbre de transmission 4 entre la machine électrique tournante 1 et le module d’entrainement 5, ledit dispositif 55 comprenant exactement deux paliers 60 - dits premier palier 6 et deuxième palier 60 - afin de maintenir radialement l’arbre de transmission 4. According to its first aspect, the invention aims to simplify such an assembly by reducing the number of bearings to allow an isostatic assembly of the transmission shaft 4 between the rotary electrical machine 1 and the drive module 5. For this Therefore, the drive system 44 according to the first aspect of the invention comprises a device 55 which makes it possible to maintain the transmission shaft 4 between the rotary electrical machine 1 and the drive module 5, said device 55 comprising exactly two bearings 60 - said first bearing 6 and second bearing 60 - in order to radially hold the transmission shaft 4.
Le premier palier 6, par exemple du type à simple rangée de billes, est positionné axialement à une première extrémité 7 de l’arbre de transmission 4, et plus particulièrement du côté opposé au module d’entrainement 5 par rapport à la machine électrique tournante 1. Une bague intérieure du premier palier 6 est en appui radial contre une face cylindrique de l’arbre de transmission 4, et une bague extérieure du premier palier 6 est en appui radial contre la machine électrique tournante 1 , permettant ainsi de contraindre au moins radialement la position de l’arbre de transmission 4 au niveau de sa première extrémité axiale 7. Complémentairement, le premier palier 6 est avantageusement en appui axial contre un épaulement 8 de l’arbre de transmission 4, ledit épaulement 8 s’étendant radialement vers l’extérieur. Plus précisément, le premier palier 6 est en appui axial contre l’épaulement 8 par l’intermédiaire de sa bague intérieure uniquement. L’épaulement 8 forme ainsi un élément d’arrêt axial du premier palier 6 par rapport à l’arbre de transmission 4. The first bearing 6, for example of the single row type of ball, is positioned axially at a first end 7 of the transmission shaft 4, and more particularly on the opposite side to the drive module 5 with respect to the rotating electrical machine. 1. An inner ring of the first bearing 6 is in radial abutment against a cylindrical face of the transmission shaft 4, and an outer ring of the first bearing 6 is in radial abutment against the rotating electrical machine 1, thus making it possible to constrain at least radially the position of the transmission shaft 4 at its first axial end 7. Complementarily, the first bearing 6 is advantageously in axial abutment against a shoulder 8 of the transmission shaft 4, said shoulder 8 extending radially towards outside. More specifically, the first bearing 6 is in axial abutment against the shoulder 8 via its inner ring only. The shoulder 8 thus forms an axial stop element of the first bearing 6 with respect to the transmission shaft 4.
L’épaulement 8 de l’arbre de transmission 4 délimite ainsi une portée d’extrémité 41 de diamètre inférieur à une portée 42 dudit arbre de transmission 4 prise au niveau du rotor 3 de la machine électrique tournante 1. The shoulder 8 of the transmission shaft 4 thus delimits an end surface 41 of diameter smaller than a bearing surface 42 of said transmission shaft 4 taken at the level of the rotor 3 of the rotary electric machine 1.
L’arbre de transmission 4 comporte une deuxième extrémité axiale 70 située du côté du module d’entrainement 5. The transmission shaft 4 has a second axial end 70 located on the side of the drive module 5.
Le module d’entrainement 5 comprend un boîtier 33. Le boîtier 33 comprend une première demi-coquille 9 et une deuxième demi-coquille 10 qui seront décrites ultérieurement. D’une manière générale, les première et deuxième demi-coquilles forment entre elles un volume 11 logeant un moyeu de liaison 12. Le moyeu de liaison 12 est couplé en rotation à l’arbre de transmission 4 de la machine électrique tournante 1 par l’intermédiaire d’éléments de couplage en rotation. Dans l’exemple illustré sur la figure 1 , l’arbre de transmission 4 comprend des premiers éléments de couplage en rotation 411 , par exemple du type de cannelures axiales réparties circonférentiellement autour de l’arbre de transmission 4 par rapport à l’axe de rotation O ; et le moyeu de liaison 12 comprend des deuxièmes éléments de couplage en rotation 121 , par exemple du type de cannelures axiales réparties circonférentiellement autour du moyeu de liaison 12 par rapport à l’axe de rotation O. The drive module 5 comprises a housing 33. The housing 33 comprises a first half-shell 9 and a second half-shell 10 which will be described later. In general, the first and second half-shells form between them a volume 11 housing a connecting hub 12. The connecting hub 12 is rotatably coupled to the transmission shaft 4 of the rotary electric machine 1 by means of rotating coupling elements. In the example illustrated in FIG. 1, the transmission shaft 4 comprises first rotation coupling elements 411, for example of the type of axial splines distributed circumferentially around the transmission shaft 4 with respect to the axis of rotation. rotation O; and the connecting hub 12 comprises second rotational coupling elements 121, for example of the type of axial splines distributed circumferentially around the connecting hub 12 with respect to the axis of rotation O.
Le moyeu de liaison 12 comprend une portée 14 d’élongation axiale qui s’étend depuis la partie dudit moyeu de liaison 12 qui comprend les deuxièmes éléments de couplage en rotation 121 en direction de la machine électrique tournante 1. Une face extérieure de la portée 14 d’élongation axiale 14 est située radialement à l’intérieure de la partie du moyeu de liaison 12 située au niveau des deuxièmes éléments de couplage en rotation 12, formant ainsi un épaulement 16 d’élongation radiale. The connecting hub 12 comprises an axial elongation bearing surface 14 which extends from the portion of said connecting hub 12 which comprises the second rotating coupling elements 121 towards the rotating electrical machine 1. An outer face of the span 14 of axial elongation 14 is located radially inwardly of the portion of the connecting hub 12 located at the second rotational coupling elements 12, thereby forming a shoulder 16 of radial elongation.
Ainsi, le deuxième palier 60 est en prise avec la portée d’élongation axiale 14 d’une part, et avec l’épaulement 16 d’autre part. Plus particulièrement, la bague intérieure 15 du deuxième roulement 60 est en appui radial sur la face radiale externe de la portée 14 du moyeu de liaison 12. Par ailleurs, le deuxième roulement 60 est en appui axial contre l’épaulement 60. Plus particulièrement, une face arrière AR de la bague intérieure du deuxième palier 60 est en appui axial contre l’épaulement 16, permettant ainsi de réaliser un arrêt axial du deuxième roulement 60 vers l’arrière AR et par rapport au moyeu de liaison 12. Thus, the second bearing 60 is engaged with the axial elongation range 14 on the one hand, and with the shoulder 16 on the other hand. More particularly, the inner ring 15 of the second bearing 60 is in radial abutment on the outer radial face of the bearing surface 14 of the connecting hub 12. Furthermore, the second bearing 60 bears axially against the shoulder 60. More particularly, a rear face AR of the inner ring of the second bearing 60 is in axial abutment against the shoulder 16, thus making it possible to achieve an axial stop of the second bearing 60 towards the rear AR and with respect to the connecting hub 12.
Chaque demi-coquille 9, 10 s’étend radialement au-delà de l’arbre de transmission 4 et du moyeu de liaison 12 afin de former un volume fermé à l’intérieur duquel sont logés le moyeu de liaison 12 et l’organe de transmission de couple qui sera décrit ultérieurement en référence à la figure 3. Each half-shell 9, 10 extends radially beyond the transmission shaft 4 and the connecting hub 12 so as to form a closed volume inside which the connecting hub 12 and the transmission of torque which will be described later with reference to FIG.
Plus particulièrement, la première demi-coquille 9 du boîtier 33 comprend un talon 61 à son extrémité radiale intérieure. Le talon 61 est en appui radial contre le deuxième palier 60, par exemple du type d’un roulement à double rangée de billes. More particularly, the first half-shell 9 of the housing 33 comprises a heel 61 at its inner radial end. The heel 61 is in radial abutment against the second bearing 60, for example of the type of a double-row ball bearing.
Au niveau d’une face avant AV du deuxième palier 60, le talon 61 de la première demi-coquille 9 comprend une portée d’élongation radiale 17 qui permet de réaliser un arrêt axial vers l’arrière AR de ladite première demi-coquille 9. Au niveau d’une extrémité radiale intérieure de la portée d’élongation radiale 17 du talon 61 , ledit talon 61 comprend une portée d’élongation axiale 131 qui s’étend axialement vers l’avant AV en direction de la machine électrique tournante 1 et qui permet de former une gorge 13 qui s’étend circonférentiellement autour de l’arbre de transmission 4. En d’autres termes, la gorge 13 est située axialement à une extrémité avant AV du module d’entrainement 5 et contre le deuxième palier 60. Plus particulièrement encore, la gorge 13 est délimitée radialement vers l’extérieur par la portée d’élongation axiale 131 , et ladite gorge 13 est radialement ouverte radialement vers l’intérieur, en direction de la portée d’élongation axiale 14 du moyeu de liaison 12. La portée d’élongation axiale 131 du talon 61 est située avantageusement entre une bague intérieure et une bague extérieure du deuxième palier 60. At a front face AV of the second bearing 60, the heel 61 of the first half-shell 9 comprises a radial elongation bearing surface 17 which makes it possible to carry out an axial rearward stop AR of said first half-shell 9 . At an inner radial end of the radial elongation bearing surface 17 of the heel 61, said heel 61 comprises an axial elongation bearing surface 131 which extends axially forward AV towards the rotating electrical machine 1 and which makes it possible to form a groove 13 which extends circumferentially around the transmission shaft 4. In other words, the groove 13 is situated axially at a front end AV of the drive module 5 and against the second bearing 60 Even more particularly, the groove 13 is delimited radially outwards by the axial elongation bearing surface 131, and said groove 13 is radially open radially inwards towards the axial elongation bearing surface 14 of the hub. link 12. The axial elongation range 131 of the bead 61 is advantageously located between an inner ring and an outer ring of the second bearing 60.
De manière avantageuse, la première demi-coquille 9 du boîtier 33 du module d’entrainement 5 comprend un organe d’étanchéité 77 configuré pour assurer une étanchéité entre le boîtier 33 et le moyeu de liaison 12. Dans l’exemple illustré sur la figure 1 , l’organe d'étanchéité 77 comprend un joint d’étanchéité 18 inséré dans la gorge 13 de la première demi-coquille 9. Plus particulièrement, une face radiale interne du joint d’étanchéité 18 est en appui radial contre la face radiale externe de la portée d’élongation axiale 14 du moyeu de liaison 12 d’une part, et en appui radial contre la portée d’élongation axiale 131 du talon 61 de la première demi-coquille 9. Le joint d’étanchéité 18 est avantageusement du type d’un joint dynamique, et plus particulièrement du type d’un joint à lèvre. Advantageously, the first half-shell 9 of the housing 33 of the drive module 5 comprises a sealing member 77 configured to provide a seal between the housing 33 and the connecting hub 12. In the example illustrated in FIG. 1, the sealing member 77 comprises a seal 18 inserted into the groove 13 of the first half-shell 9. More particularly, an inner radial face of the seal 18 is in radial abutment against the radial face external of the axial elongation span 14 of the connecting hub 12 on the one hand, and in radial abutment against the axial elongation range 131 of the heel 61 of the first half-shell 9. The seal 18 is advantageously of the type of a dynamic seal, and more particularly of the type of a lip seal.
Le module d’entrainement 15 comprend une première roue dentée 20 et une deuxième roue dentée 21 afin de transmettre le couple généré par la machine électrique tournante 1 à un module d’embrayage non représenté sur la figure 1 par l’intermédiaire d’un premier organe de transmission de couple 200 et respectivement à un périphérique moteur non représenté sur la figure 1 par l’intermédiaire d’un deuxième organe de transmission de couple 210. The drive module 15 comprises a first toothed wheel 20 and a second gear 21 for transmitting the torque generated by the rotating electrical machine 1 to a clutch module not shown in FIG. 1 by means of a first gear wheel. torque transmission member 200 and respectively to a motor device not shown in Figure 1 through a second torque transmission member 210.
Plus particulièrement, et comme visible sur la figure 2, le premier organe de transmission de couple 200 est avantageusement une première courroie 201 ; et/ou le deuxième organe de transmission de couple 210 est avantageusement une deuxième courroie 211. Le moyeu de liaison 12 et l’arbre de transmission 4 sont fixés solidairement l’un à l’autre par l’intermédiaire d’un organe de fixation 22 situé au niveau de la deuxième extrémité axiale de l’arbre de transmission 4. More particularly, and as visible in Figure 2, the first torque transmission member 200 is preferably a first belt 201; and / or the second torque transmission member 210 is advantageously a second belt 211. The connecting hub 12 and the transmission shaft 4 are fixed integrally to each other by means of a fastener 22 located at the second axial end of the transmission shaft 4.
En référence à la figure 3, un système de transmission 66 pour une chaîne de traction hybride d’un véhicule automobile va maintenant être décrit. With reference to FIG. 3, a transmission system 66 for a hybrid power train of a motor vehicle will now be described.
Dans l’exemple illustré sur la figure 3, le système de transmission 66 comprend un système d’entrainement 44 conforme au premier aspect de l’invention et tel que décrit précédemment. En particulier, mais non limitativement, le système d’entrainement 44 illustré sur la figure 3 comprend la machine électrique tournante 1 et le module d’entrainement 5. Le système de transmission 66 comprend en outre un module d’embrayage 30 couplé en rotation au système d’entrainement par l’intermédiaire d’au moins un organe de transmission de couple 200, 210, tel que décrit précédemment. In the example illustrated in Figure 3, the transmission system 66 comprises a drive system 44 according to the first aspect of the invention and as described above. In particular, but not exclusively, the drive system 44 illustrated in FIG. 3 comprises the rotary electrical machine 1 and the drive module 5. The transmission system 66 further comprises a clutch module 30 coupled in rotation to the driving system via at least one torque transmission member 200, 210, as previously described.
Le système d’entrainement 44 comprend l’arbre de transmission 4 qui relie la machine électrique tournante 1 au module d’entrainement 5 afin de transmettre le couple généré par ladite machine électrique tournante 1 audit module d’entrainement. Comme visible sur la figure 3, l’arbre de transmission 4 est parallèle à un axe de rotation O’ du module d’embrayage 30, de sorte qu’il existe une distance D non nulle séparant ledit arbre de transmission 4 dudit axe de rotation O’ du module d’embrayage 30, la distance D étant prise selon une direction perpendiculaire audit axe de rotation O’ du module d’embrayage 30. Cette architecture est dite parallèle. The drive system 44 comprises the transmission shaft 4 which connects the rotating electrical machine 1 to the drive module 5 in order to transmit the torque generated by said rotating electrical machine 1 to said drive module. As can be seen in FIG. 3, the transmission shaft 4 is parallel to an axis of rotation O 'of the clutch module 30, so that there is a non-zero distance D separating said transmission shaft 4 from said axis of rotation. O 'of the clutch module 30, the distance D being taken in a direction perpendicular to said axis of rotation O' of the clutch module 30. This architecture is said to be parallel.
En synthèse, l’invention concerne notamment un système d’entrainement 44 d’un organe de transmission de couple pour une chaîne de traction hybride de véhicule automobile. Le système d’entrainement 44 comprend une machine électrique tournante 1 , un module d’entrainement 5 et un dispositif 55 pour supporter les efforts radiaux d’un arbre de transmission 4 de la machine électrique tournante 1. Selon une particularité avantageuse de l’invention, le dispositif 55 comprenant exactement deux paliers 6, 60 afin de supprimer un hyperstatisme lors de l’assemblage de l’arbre de transmission 4 dans le système d’entrainement 44. In summary, the invention relates in particular to a drive system 44 of a torque transmission member for a hybrid drive train of a motor vehicle. The drive system 44 comprises a rotating electrical machine 1, a drive module 5 and a device 55 for supporting the radial forces of a transmission shaft 4 of the rotating electrical machine 1. According to an advantageous feature of the invention , the device 55 comprising exactly two bearings 6, 60 in order to eliminate a hyperstatism during the assembly of the transmission shaft 4 in the drive system 44.

Claims

REVENDICATIONS
1. Système d’entrainement (44) d’un organe de transmission de couple pour une chaîne de traction hybride, ledit système d’entrainement (44) comprenant : A drive system (44) for a torque transmission member for a hybrid drivetrain, said drive system (44) comprising:
- un module d’entrainement (5) comprenant un boîtier (33) comprenant deux demi-coquilles (9, 10) délimitant entre elles un volume dans lequel est logé un moyeu de liaison (12).  - A drive module (5) comprising a housing (33) comprising two half-shells (9, 10) delimiting between them a volume in which is housed a connecting hub (12).
une machine électrique tournante (1) comprenant :  a rotary electric machine (1) comprising:
o un stator (2) ;  a stator (2);
o un rotor (3) mobile en rotation par rapport au stator (3) ;  a rotor (3) rotatable relative to the stator (3);
o un arbre de transmission (4) couplé en rotation au rotor (3) et s’étendant axialement depuis la machine électrique tournante (1) vers le module d’entrainement (5) ;  a transmission shaft (4) rotatably coupled to the rotor (3) and extending axially from the rotary electric machine (1) to the drive module (5);
dans lequel le système d’entrainement (44) comprend un dispositif (55) configuré pour supporter des efforts radiaux de l’arbre de transmission (4) par rapport à la machine électrique tournante (1) et au module d’entrainement (5), ledit dispositif (55) comprenant exactement deux paliers (6, 60) et dans lequel dans lequel l’arbre de transmission (4) est couplé en rotation au moyeu de liaison (12) du module d’entrainement (5), ledit moyeu de liaison (12) s’étendant axialement entre la deuxième extrémité (70) de l'arbre de transmission (4) et la machine électrique tournante (1)  wherein the drive system (44) comprises a device (55) configured to support radial forces of the drive shaft (4) with respect to the rotating electrical machine (1) and the drive module (5) , said device (55) comprising exactly two bearings (6, 60) and wherein the transmission shaft (4) is rotatably coupled to the connecting hub (12) of the drive module (5), said hub connecting member (12) extending axially between the second end (70) of the transmission shaft (4) and the rotating electric machine (1)
caractérisé en ce que la première demi-coquille (9) du boîtier (33) du module d’entrainement (5) comprend un organe d’étanchéité (77) configuré pour assurer une étanchéité entre le boîtier (33) et le moyeu de liaison (12).  characterized in that the first half-shell (9) of the housing (33) of the drive module (5) comprises a sealing member (77) configured to provide a seal between the housing (33) and the connecting hub (12).
2. Système d’entrainement (44) selon la revendication 1 , dans lequel un premier palier (6) est positionné axialement au niveau d’une première extrémité (7) axiale de l’arbre de transmission (4), ladite première extrémité (7) étant positionnée à l’opposé du module d’entrainement (5) par rapport à la machine électrique tournante (1 ) et dans lequel un deuxième palier (60) est positionné axialement au niveau d’une deuxième extrémité (70) axiale de l’arbre de transmission (4), ladite deuxième extrémité (70) étant située du côté du module d'entrainement (5). Drive system (44) according to claim 1, wherein a first bearing (6) is positioned axially at a first axial end (7) of the transmission shaft (4), said first end (6) being 7) being positioned opposite the drive module (5) with respect to the rotating electrical machine (1) and in which a second bearing (60) is positioned axially at a second axial end (70) of the transmission shaft (4), said second end (70) being located on the side of the drive module (5).
3. Système d’entrainement (44) selon la revendication 1 , dans lequel le moyeu de liaison (12) comporte une portée d’élongation axiale (14) qui s’étend en direction de la première extrémité (7) de l’arbre de transmission (4). The drive system (44) of claim 1, wherein the hub (12) has an axial elongation bearing (14) extending toward the first end (7) of the shaft transmission (4).
4. Système d’entrainement (44) selon la revendication 1 , dans lequel la première demi- coquille (9) du boîtier (33) du module d’entrainement (5) comprend une gorge (13) située à une extrémité radiale intérieure de ladite première demi-coquille (9). 4. Training system (44) according to claim 1, wherein the first half-shell (9) of the housing (33) of the drive module (5) comprises a groove (13) located at an inner radial end of said first half-shell (9).
5. Système d’entrainement (44) selon la revendication 4, dans lequel un joint d’étanchéité (18) est positionné dans la gorge (13) de la première demi-coquille (9), ledit joint d’étanchéité (18) et ladite gorge (13) formant l’organe d’étanchéité (77). A drive system (44) according to claim 4, wherein a seal (18) is positioned in the groove (13) of the first half-shell (9), said seal (18) and said groove (13) forming the sealing member (77).
6. Système d’entrainement (44) selon les revendications 3 à 5, dans lequel la portée (14) d’élongation axiale du moyeu de liaison (12) est délimitée axialement à son extrémité non libre par un épaulement (16) s’étendant radialement vers l’extérieur, ledit épaulement (16) permettant un arrêt axial dudit moyeu de liaison (12) contre le deuxième palier (60). 6. Drive system (44) according to claims 3 to 5, wherein the span (14) of axial elongation of the connecting hub (12) is defined axially at its non-free end by a shoulder (16) s' extending radially outward, said shoulder (16) allowing axial stop of said connecting hub (12) against the second bearing (60).
7. Système de transmission (66) pour chaîne de traction hybride, dans lequel ledit système de transmission (66) comprend : A transmission system (66) for a hybrid drivetrain, wherein said transmission system (66) comprises:
un système d'entrainement (44) selon l’une quelconque des revendications 1 à a drive system (44) according to any one of claims 1 to
6 ; 6;
un module d’embrayage (30) comprenant au moins un embrayage et un système d’actionnement pour configurer l’au moins un embrayage dans une configuration embrayée ou débrayée ;  a clutch module (30) comprising at least one clutch and an actuation system for configuring the at least one clutch in an engaged or disengaged configuration;
des moyens de transmission de couple (31 ), pour permettre le transfert d’un couple entre le système d’entrainement (44) et le module d’embrayage (30).  torque transmission means (31), to allow the transfer of a torque between the drive system (44) and the clutch module (30).
8. Système de transmission (66) selon la revendication précédente, dans lequel les moyens de transmission de couple (31) comprennent au moins une première roue dentée (20) ou une première poulie à gorge et un premier organe de transmission, ladite première roue dentée (20) ou première poulie à gorge étant couplée en rotation au moyeu de liaison (12), et ledit premier organe de transmission étant configuré pour transmettre un couple entre la première roue dentée (20) ou la première poulie à gorge et le module d’embrayage (30). 8. Transmission system (66) according to the preceding claim, wherein the torque transmission means (31) comprise at least a first gear (20) or a first grooved pulley and a first transmission member, said first wheel toothed gear (20) or first grooved pulley being rotatably coupled to the connecting hub (12), and said first transmission member being configured to transmit a torque between the first gear wheel (20) or the first sheave pulley and the module clutch (30).
9. Système de transmission (66) selon la revendication 8, dans lequel il comprend une deuxième roue dentée (21) ou une deuxième poulie à gorge et un deuxième organe de transmission de couple, ladite deuxième roue dentée (21) ou deuxième poulie à gorge étant couplée en rotation au moyeu de liaison (12), et ledit deuxième organe de transmission étant configuré pour transmettre un couple entre la deuxième roue dentée (21) ou la deuxième poulie à gorge et un périphérique moteur. The transmission system (66) according to claim 8, wherein it comprises a second gear (21) or a second sheave and a second torque transmission member, said second gear (21) or second sheave groove being rotatably coupled to the connecting hub (12), and said second transmission member being configured to transmit a torque between the second gear (21) or the second grooved pulley and a driving device.
PCT/EP2019/000125 2018-04-17 2019-04-17 Driving system for a hybrid motor vehicle and transmission system comprising such a driving system WO2019201472A1 (en)

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FR1853367A FR3080068B1 (en) 2018-04-17 2018-04-17 DRIVE SYSTEM FOR A HYBRID MOTOR VEHICLE AND TRANSMISSION SYSTEM INCLUDING SUCH DRIVE SYSTEM
FR1853367 2018-04-17

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EP3079238A1 (en) * 2015-04-07 2016-10-12 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Electrical machine assembly, motor vehicle transmission gearboxes and method for producing an electrical machine assembly
US20170120899A1 (en) * 2015-11-04 2017-05-04 Kanzaki Kokyukoki Mfg. Co., Ltd. Transaxle and motor unit for hybrid vehicle

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FR3080068B1 (en) 2020-09-04
FR3080068A1 (en) 2019-10-18

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