WO2023274448A1 - Chaîne cinématique de véhicule automobile - Google Patents

Chaîne cinématique de véhicule automobile Download PDF

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Publication number
WO2023274448A1
WO2023274448A1 PCT/DE2022/100445 DE2022100445W WO2023274448A1 WO 2023274448 A1 WO2023274448 A1 WO 2023274448A1 DE 2022100445 W DE2022100445 W DE 2022100445W WO 2023274448 A1 WO2023274448 A1 WO 2023274448A1
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WO
WIPO (PCT)
Prior art keywords
differential
electric machine
torque
drive train
combustion engine
Prior art date
Application number
PCT/DE2022/100445
Other languages
German (de)
English (en)
Inventor
Steffen Lehmann
Dierk Reitz
Thorsten Biermann
Original Assignee
Schaeffler Technologies AG & Co. KG
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Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2023274448A1 publication Critical patent/WO2023274448A1/fr

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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
    • B60K6/42—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
    • B60K6/44—Series-parallel type
    • B60K6/442—Series-parallel switching 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
    • B60K6/22—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
    • B60K6/36—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 transmission gearings
    • B60K6/365—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 transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • 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
    • 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
    • B60K2006/381—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 characterized by driveline brakes

Definitions

  • the invention relates to a drive train for a motor vehicle, comprising an internal combustion engine, a first and second electric machine and a differential, the differential being connected in a closed coupling state of a first coupling device to the first electric machine and the internal combustion engine in a torque-transmitting manner and on the other hand, a second coupling device is connected in a torque-transmitting manner to the second electric machine continuously or in a closed coupling state.
  • An internal combustion engine and an electric machine used for propulsion can interact in hybrid vehicles in different ways.
  • the internal combustion engine can be mechanically decoupled from the differential and thus from the wheels of the vehicle and can only drive an electric machine operated as a generator. Power provided by this electric machine can drive an electric machine used for propulsion and therefore coupled to the differential.
  • parallel operation is possible, in which both the combustion engine and the electric machine used for the drive are coupled to the differential or the driven wheels. By sharing the electric machine and the internal combustion engine for driving, a higher torque can be provided here.
  • a drive train in which it is possible to switch between these two operating modes as required, in that the internal combustion engine and one of the two electric machines used can be decoupled from the differential, is known from publication WO 2019/101264 A1.
  • the two electrical machines, the transmission stages used, a torsion damper and the internal combustion engine are arranged one behind the other.
  • the invention is therefore based on the object of specifying a drive train for a motor vehicle which permits additional applications or leads to a lower installation space requirement in the axial direction of the drive machines.
  • the object is achieved according to the invention by a drive train of the type mentioned at the outset, the rotor of the second electrical machine having the same axis of rotation as at least one of the output shafts of the differential, the axis of rotation of an output shaft of the internal combustion engine and/or the axis of rotation of the rotor of the first electrical machine are offset perpendicular to the axis of rotation of the rotor of the second electrical machine to this axis of rotation.
  • the components of the drive train can be arranged in such a way that they overlap in the axial direction, since they can be offset from one another perpendicularly to the axial direction.
  • the drive train can be implemented with small dimensions and with little technical effort despite this displacement of the components, since the axis of rotation in the second electrical machine coincides with the axis of rotation of the differential.
  • the second electrical machine and in particular these upstream and downstream components, which can be used in particular for torque transmission, can be arranged coaxially around one of the output shafts of the differential in order to achieve a low space requirement for the drive train despite the offsetting of the components.
  • the axes of rotation of the electrical machines of the internal combustion engine and the output shafts of the differential are virtual axes of rotation, ie they are not necessarily shafts that are actually present. An identical axis of rotation of two components therefore corresponds to a coaxial arrangement of these components.
  • the axes of rotation of the internal combustion engine and the first electric machine are preferably the same, which means that the complexity of the drive train and its space consumption can be further reduced.
  • the second electrical machine is in particular arranged coaxially with the two output shafts of the differential, with one of these output shafts in particular passing through an axial passage of the electrical machine.
  • the use of the second coupling device can enable the second electric machine to be decoupled from the differential, in particular also while the internal combustion engine and the first electric machine are coupled to the differential.
  • the second electric machine in operating states of the motor vehicle in which the second electric machine is not to be used, for example when the internal combustion engine is primarily used to drive the motor vehicle, it can be achieved that the second electric machine does not have to run, resulting in friction losses and/or electric losses can be reduced.
  • the differential When the first coupling device is in the closed coupling state, the differential can be connected to the first electric machine and the internal combustion engine via an intermediate shaft in a torque-transmitting manner, with the intermediate shaft running coaxially to the output shaft of the differential and/or being designed as a hollow shaft, within which the output shaft of the differential runs.
  • both output shafts of the differential are coaxial with the intermediate shaft, but only one of the output shafts runs in the intermediate shaft designed to form a hollow shaft. This leads to a particularly efficient use of installation space.
  • the intermediate shaft can be connected to the rotor of the second electrical machine in a torque-transmitting manner directly or via an intermediate transmission stage and/or the second coupling device.
  • a direct torque-transmitting connection can be implemented in particular in that the intermediate shaft carries the rotor of the second electrical machine. Torque may then be serially transferred from the first electric machine and/or the engine to the second electric machine. If the torque-transmitting connection between the intermediate shaft and the rotor of the second electrical machine is to take place via a transmission stage or coupling device, it can be advantageous if the intermediate shaft runs through an axial passage of the second electrical machine or if the intermediate shaft runs at least in the area of the second electrical machine runs within a further hollow shaft carrying the rotor of the second electrical machine.
  • the intermediate translation stage can be formed in particular by a planetary gear.
  • the rotor of the second electric machine can be coupled to the sun gear, while the intermediate shaft is coupled to the tarpaulin carrier.
  • a coupling with a fixed transmission ratio can be achieved by using a ring gear of the planetary gear that is stationary or lockable, for example by a brake or clutch.
  • the intermediate transmission stage can be formed by a planetary gear, the second coupling device being a braking device which, in its closed coupling state, brakes the ring gear of the planetary gear forming the intermediate transmission stage.
  • the second coupling device can be designed in a particularly simple and space-saving manner.
  • the or the intermediate transmission stage forming planetary gear can be arranged coaxially with the output shaft of the differential, the drive shaft from the bes runs through a central opening of the sun gear of the planetary gear. Compared to a transmission stage arranged on the side next to the output shaft, the space required for the drive train can be reduced.
  • the intermediate shaft can be coupled via an upstream transmission step to a further intermediate shaft which is arranged coaxially with the rotor of the first electrical machine.
  • the upstream transmission stage can implement the offset between the axes of rotation of the second electrical machine or the differential and the first electrical machine or the internal combustion engine.
  • This double function of the transmission stage reduces the complexity and space requirements of the drive train compared to a separate implementation of these functions.
  • This transmission step can then in particular represent a torque input of the intermediate shaft.
  • the upstream transmission stage can be formed by a chain drive or by a gear drive, in particular by a gear drive with exactly one intermediate wheel. Both implementations require little installation space in the axial direction of the drive machines and are suitable for bridging relatively large distances between the rotary axes. They are therefore particularly suitable for use in the drive train according to the invention.
  • the rotor of the second electrical machine can be connected to the differential in a torque-transmitting manner via a downstream translation stage or several, in particular two, downstream translation stages.
  • a total of three translation stages are preferably used, namely the upstream translation stage and either two downstream translation stages or one downstream translation stage in conjunction with the intermediate translation stage between the second electrical machine and the intermediate shaft.
  • the downstream translation stage or at least one of the downstream translation stages can each be formed by a planetary gear which is arranged coaxially with the output shaft of the differential, the output shaft running through a central opening in the sun gear of this planetary gear.
  • a planetary gear which is arranged coaxially with the output shaft of the differential, the output shaft running through a central opening in the sun gear of this planetary gear.
  • the internal combustion engine and the first electric machine can be coupled to one another with a transmission ratio of 1:1.
  • the first coupling device can be arranged radially and axially within the first electrical machine. Both measures contribute to further reducing the complexity and space consumption of the powertrain.
  • a motor vehicle which includes a drive train according to the invention. If only a first coupling device is used in the drive train, the internal combustion engine and the second electric machine can be operated in series when the first coupling device is in an open coupling state, i.e. the internal combustion engine can be mechanically decoupled from the differential and exclusively used as a generator to drive operated first electrical machine.
  • the current provided can be used to drive the second electrical machine as a drive motor.
  • both the second electrical machine and the internal combustion engine are mechanically coupled to the differential and can therefore jointly provide a higher torque for driving.
  • This is also referred to as a parallel drive.
  • the drive train also has a second coupling device, the operating states already explained above can be provided by closing the second coupling device.
  • Additional operating states are made possible by opening the second coupling device. If both coupling devices are open, neither the combustion engine nor the electric machines are coupled to the differential, although the combustion engine can still drive the first electric machine. This can be used, for example, to charge an energy store of the motor vehicle by operating the first electric machine as a generator when the motor vehicle is stationary or when coasting.
  • the first coupling device is closed and the second coupling device is opened, the first electric machine and the internal combustion engine are mechanically coupled to the differential and thus to the wheels of the motor vehicle, while the second electric machine is decoupled from the differential and thus the wheels.
  • the efficiency of the vehicle can be further increased, in particular for a drive of the motor vehicle that is primarily provided by the internal combustion engine.
  • the intermediate shaft has a torque input which is or can be connected to the first electric machine for torque transmission and the intermediate shaft further has a torque output which is connected to the differential for torque transmission.
  • the torque input is spaced axially from the torque output and the second electric machine is arranged axially between the torque input and the torque output. This allows a particularly compact design.
  • the rotor of the second electrical machine can be connected or connectable directly and immediately or via the second coupling device to the intermediate shaft. This makes it possible to implement different torque paths with very similar structures.
  • the internal combustion engine, the first electrical machine, the second electrical machine and the differential are coupled or can be coupled to one another in such a way that torque along a single torque path is serially transmitted in this order from the internal combustion engine to the differential.
  • the combustion engine, the first electric machine, the second electric machine and the differential are coupled or can be coupled to one another in such a way that torque is transmitted serially from the combustion engine via the first electric machine and along a first torque path then, if necessary, is transmitted via transmission stages to the differential and, parallel to this first torque path, a second torque path transmits torque from the second electric machine, if necessary via an additional or the same transmission stage to the differential.
  • one or two transmission stages can be arranged between the second electrical machine and/or between the first electrical machine and the differential, or one or two planetary gears can be provided accordingly.
  • FIG. 1 shows a detailed view of a motor vehicle which includes an exemplary embodiment of a drive train according to the invention
  • FIGS. 2 to 4 further exemplary embodiments of drive trains according to the invention.
  • FIG. 1 shows a motor vehicle 5, which includes a drive train 1 with an internal combustion engine 6, a first and second electrical machine 7, 8 and a differential 9.
  • the internal combustion engine 6 and the first electrical machine 7 can be decoupled from the differential 9 by the coupling device 13 .
  • the internal combustion engine 6 can drive the first electric machine 7 operated as a generator in order to provide electricity for the second electric machine 8 .
  • the coupling device 13 can be closed in order to additionally couple the internal combustion engine 6 and the first electrical machine 7 to the differential 9 .
  • the components are arranged in such a way that the rotor 15 of the second electric machine 8 has the same axis of rotation 16 as the output shafts 11, 12 of the differential, the axis of rotation 17 of an output shaft 18 of the Combustion engine 6 or the axis of rotation 19 of the rotor 20 of the first electric machine 7, which is identical to this in the example, are offset perpendicularly to the axis of rotation 16 of the rotor 15 of the second electric machine 8 to this.
  • the first electrical machine 7 and a torsional damper 39 which couples it to the internal combustion engine, are arranged in the same axial section of the motor vehicle 5 as the second electrical machine 8.
  • the internal combustion engine 6 is arranged in the same axial section as those explained later downstream gear ratio stages 25, 26. This allows a very short drive train to be implemented in the axial direction, which enables the use of such a drive train in motor vehicles in which axial cascading of all components is not possible, or at least would be disadvantageous, for space reasons.
  • the internal combustion engine 6 is coupled with a gear ratio of 1:1 to the first electric machine 7, the rotor 20 of which is hollow, so that the first coupling device 13 can be arranged axially and radially within the first electric machine 7 couples the rotor 20 to the intermediate shaft 32.
  • This enables a compact and mechanically simple construction of the components of the drive train 1 that are arranged coaxially with respect to the axis of rotation 17 or 19 .
  • the remaining components of the drive train 1 are arranged coaxially with respect to the output shafts 11 , 12 of the differential 9 .
  • the torque is transmitted between the axes of rotation, ie between the intermediate shaft 32 and the intermediate shaft 22, via an upstream transmission stage 31, which is designed in the example as a gear drive 34 with exactly one intermediate wheel 40.
  • This transmission stage 31 is arranged in a first axial region of the intermediate shaft 22 and represents the torque input for the intermediate shaft 22.
  • the intermediate shaft 22 is coupled directly to the rotor 15 of the second electrical machine 8 or carries this rotor 15.
  • the transmission stage 31 fulfills a dual function, namely the transmission of torque between the axis of rotation 17 or 19 and to the axis of rotation 16 on the one hand and a speed adjustment between the internal combustion engine 6 and the second electric machine 8 when the coupling device 13 is closed on the other hand.
  • a speed adjustment can be advantageous, since this example, a relatively fast rotating second electrical machine 8 can be used, which typically leads to more compact dimensions with the same power.
  • the intermediate shaft 22 passes through the electrical machine 8 and thus through the rotor 15 and the stator 21 of the electrical machine 8 and is designed as a hollow shaft through which the output shaft 11 of the differential 9 runs.
  • This enables the upstream transmission stage 31 and the differential 9 or the downstream transmission stage 25, 26 to be arranged on different sides of the second electrical machine 8, which can lead to a particularly compact design of the drive train 1.
  • the transmission stages 25, 26 are arranged in a second axial area at a distance from the first axial area and form the torque output of the intermediate shaft 22.
  • the second electric machine 8 is therefore arranged axially between the torque input and the torque output of the intermediate shaft 22, on the one hand other elements are internal combustion engine 6, first electric machine 7, second electric machine 8, transla tion stage 25, 26 and differential 9 in the direction of the torque path in series behind one another.
  • an additional transmission between the housing 10 of the differential 9 and the intermediate shaft 22 or the rotor 15 of the second electrical machine 8 is preferably used.
  • This is realized in the example by two downstream transmission stages 25, 26, each of which is designed as a planetary gear 35, 36.
  • the intermediate shaft 22 coupled to the rotor 15 acts on the sun gear 37 of the planetary gear 35 .
  • the ring gear is fixed, for example, is attached to the housing of the second electric machine 8, resulting in a fixed translation to the planet carrier, which again with the sun gear 38 of the second Planetary gear 36 is coupled.
  • the ring gear is fixed and the planet carrier is coupled to the housing 10 of the differential 9 .
  • the Clarrä of 37, 38 of the planetary gear 35, 36 each have a central opening through which the output shaft 11 of the differential 9 is guided. With the configuration shown, a required translation can be realized with a relatively small space requirement.
  • the drive train 2 shown in FIG. 2 largely corresponds to the drive train 1 shown in FIG. 1 and can accordingly be used in the motor vehicle 5 instead of it.
  • the drive trains 1 , 2 differ in two respects:
  • the torque is transmitted between the intermediate shafts 32 and 22 in FIG.
  • a choice can be made as required between the chain drive 33 used here and the gear drive 34 used in FIG.
  • the rotor 15 is not rigidly coupled to the intermediate shaft 22 in the drive train 2, but a second coupling device 14 is used to couple the rotor to the intermediate shaft 22 or to decouple it from it as required.
  • a second coupling device 14 is used to couple the rotor to the intermediate shaft 22 or to decouple it from it as required.
  • the coupling device 13 can be closed and the coupling device 14 opened, so that the second electric machine 8 does not have to be dragged along, which means that higher efficiency can be achieved.
  • the possibility of decoupling the second electrical machine 8 is implemented in the example shown by the fact that the rotor 15 is carried by a further hollow shaft 24, within which both the intermediate shaft 22 and the output shaft 11 run coaxially, with the second coupling device 14 supporting the hollow shaft 24 coupled to the intermediate shaft 22 or decoupled from it.
  • FIG. 3 shows a drive train 3 which also largely corresponds to the drive train 1 shown in FIG. 1 and could also be used in motor vehicle 5 .
  • the drive train 3 differs from the drive train 1 in that the rotor 15 is not coupled directly to the intermediate shaft 22, but rather that these components are coupled via an intermediate transmission stage 23.
  • the intermediate transmission stage 23 is designed as a planetary gear 27, with the ring gear 30 being fixed, e.g. carrying the rotor 15.
  • the sun gear 28 is designed as a ring gear, so that the output shaft 11 and the intermediate shaft 22 extend through a central opening in the sun gear 28 .
  • the drive train 4 shown in FIG. 4 largely corresponds to the drive train 3 shown in FIG. 3 and can therefore also be used in the motor vehicle 5 .
  • the drive trains 3, 4 differ on the one hand in that a chain drive 33 is used as a transmission step 31 for torque transmission between the intermediate shafts 32, 22 in FIG. 4, as already in FIG.
  • the ring gear 30 is initially rotatably mounted. This means that when the braking device 28 is not actuated, the hollow shaft 24 carrying the rotor is decoupled from the intermediate shaft 22, since the planetary carrier 29 coupled to the intermediate shaft 22 and the sun gear 28 coupled to the hollow shaft 24 rotate freely relative to one another as a result can.
  • the ring gear 30 is braked to a standstill by the braking device 28, this results in a fixed transmission ratio between the hollow shaft 24 and the intermediate shaft 22 and thus between the intermediate shaft 22 and the rotor 15 of the second electrical machine 8.
  • the braking device 28 thus acts as the second coupling device 14 , so that a particularly compact implementation of both the second coupling device 14 and the intermediate translation device 23 can be achieved in the manner shown.
  • the second electric machine 8 is arranged axially between the torque input and the torque output of the intermediate shaft 22, and on the other hand the elements are the internal combustion engine, the first electric machine 7, the transmission stage 25, 26 and the differential 9 are arranged in series in the direction of the torque path, while the second electric machine 8 is at least partially connected in parallel to this torque path and establishes a second torque path parallel to the first.

Abstract

L'invention concerne une chaîne cinématique de véhicule automobile (5), comprenant un moteur à combustion interne (6), une première et une seconde machine électrique (7, 8), et un différentiel (9), le différentiel (9) étant accouplé, à des fins de transmission de couple, avec la première machine électrique (7) et avec le moteur à combustion interne (6) lorsqu'un premier dispositif d'accouplement (13) se trouve dans un état d'accouplement fermé, et étant accouplé, à des fins de transmission de couple, à la seconde machine électrique (8) ou lorsqu'un second dispositif d'accouplement (14) se trouve dans un état d'accouplement fermé ; le rotor (15) de la seconde machine électrique (8) ayant le même axe de rotation (16) qu'au moins l'un des arbres de sortie (11, 12) du différentiel (9) ; l'axe de rotation (17) d'un arbre de sortie (18) du moteur à combustion interne (6) et/ou l'axe de rotation (19) du rotor (20) de la première machine électrique (7) étant décalés par rapport à l'axe de rotation (16) du rotor (15) de la seconde machine électrique (8) perpendiculairement audit axe de rotation (16).
PCT/DE2022/100445 2021-06-29 2022-06-15 Chaîne cinématique de véhicule automobile WO2023274448A1 (fr)

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DE102021116669.1A DE102021116669A1 (de) 2021-06-29 2021-06-29 Antriebsstrang für ein Kraftfahrzeug
DE102021116669.1 2021-06-29

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Citations (6)

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US20040251065A1 (en) * 2003-05-09 2004-12-16 Nissan Motor Co., Ltd. Drive control device for hybrid vehicle
JP2016101879A (ja) * 2014-11-28 2016-06-02 マツダ株式会社 車両の駆動装置及びその組付け方法
US20170136870A1 (en) * 2015-11-12 2017-05-18 GM Global Technology Operations LLC Powertrain with multi-planetary, single motor drive unit
EP3453550A1 (fr) * 2016-06-13 2019-03-13 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Dispositif de boîte-pont
WO2019101264A1 (fr) 2017-11-23 2019-05-31 Schaeffler Technologies AG & Co. KG Chaîne cinématique hybride ayant deux machines électriques et un moteur à combustion interne
WO2019202947A1 (fr) * 2018-04-20 2019-10-24 日本電産株式会社 Unité de moteur

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019109863B4 (de) 2019-03-21 2024-01-25 Schaeffler Technologies AG & Co. KG Hybridmodul für einen Hybrid-Antriebsstrang sowie Anlassverfahren für eine Verbrennungskraftmaschine mit einem Hybridmodul
DE102020109236A1 (de) 2020-04-02 2021-10-07 Schaeffler Technologies AG & Co. KG Hybrides Antriebssystem mit mehrgängiger Getriebeeinrichtung; sowie Kraftfahrzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040251065A1 (en) * 2003-05-09 2004-12-16 Nissan Motor Co., Ltd. Drive control device for hybrid vehicle
JP2016101879A (ja) * 2014-11-28 2016-06-02 マツダ株式会社 車両の駆動装置及びその組付け方法
US20170136870A1 (en) * 2015-11-12 2017-05-18 GM Global Technology Operations LLC Powertrain with multi-planetary, single motor drive unit
EP3453550A1 (fr) * 2016-06-13 2019-03-13 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Dispositif de boîte-pont
WO2019101264A1 (fr) 2017-11-23 2019-05-31 Schaeffler Technologies AG & Co. KG Chaîne cinématique hybride ayant deux machines électriques et un moteur à combustion interne
WO2019202947A1 (fr) * 2018-04-20 2019-10-24 日本電産株式会社 Unité de moteur

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