WO2023194123A1 - Hybrid drive system for a motor vehicle, and motor vehicle, in particular automobile - Google Patents

Hybrid drive system for a motor vehicle, and motor vehicle, in particular automobile Download PDF

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Publication number
WO2023194123A1
WO2023194123A1 PCT/EP2023/057672 EP2023057672W WO2023194123A1 WO 2023194123 A1 WO2023194123 A1 WO 2023194123A1 EP 2023057672 W EP2023057672 W EP 2023057672W WO 2023194123 A1 WO2023194123 A1 WO 2023194123A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
switching element
drive system
hybrid drive
planetary gear
Prior art date
Application number
PCT/EP2023/057672
Other languages
German (de)
French (fr)
Inventor
Tobias Schilder
Klaus Riedl
Jörg Müller
Rico Resch
Martin STÖCKER
Original Assignee
Mercedes-Benz Group AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mercedes-Benz Group AG filed Critical Mercedes-Benz Group AG
Publication of WO2023194123A1 publication Critical patent/WO2023194123A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—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
    • B60K6/36—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
    • B60K6/40—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
    • B60K6/42—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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • 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
    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H2003/445—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the input and the set of orbital gears
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H2200/2041—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with four engaging means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2046—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with six engaging means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2064—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes using at least one positive clutch, e.g. dog clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2094—Transmissions using gears with orbital motion using positive clutches, e.g. dog clutches

Definitions

  • the invention relates to a hybrid drive system for a motor vehicle, in particular for a motor vehicle, according to the preamble of patent claim 1.
  • the invention further relates to a motor vehicle with such a hybrid drive system.
  • a hybrid drive system wherein an internal combustion engine and an electric machine are connected to a transmission with two partial transmissions.
  • a first of the partial transmissions has two planetary gear sets.
  • a second of the partial transmissions has two spur gear stages and is located upstream of the first partial transmission with regard to a torque flow emanating from the internal combustion engine.
  • a hybrid drive system in which two partial transmissions are also used.
  • a planetary gear is connected upstream of a spur gear partial gear.
  • the spur gear is only connected to one of the shafts of the planetary gear.
  • the DE 10 2017 006 082 A1 discloses a hybrid drive device with an internal combustion engine and with an electric machine that has a rotor.
  • a partial spur gear transmission which is connected downstream of a planetary gear with regard to a torque flow emanating from the internal combustion engine, is connected to two different shafts of the planetary gear.
  • the object of the present invention is to create a hybrid drive system for a motor vehicle and a motor vehicle with such a hybrid drive system, so that a particularly advantageous drive can be implemented in a particularly space-saving manner.
  • This object is achieved by a hybrid drive system with the features of patent claim 1 and by a motor vehicle with the features of patent claim 14.
  • Advantageous embodiments with useful developments of the invention are specified in the remaining claims.
  • a first aspect of the invention relates to a hybrid drive system for a motor vehicle, in particular for a motor vehicle, which is also referred to as a hybrid drive device or hybrid drive device or is designed as a hybrid drive device or hybrid drive device.
  • the motor vehicle which is designed in particular as a motor vehicle, in particular as a passenger car, has the hybrid drive system in its fully manufactured state and can be driven by means of the hybrid drive system.
  • the hybrid drive system has an internal combustion engine, also referred to as an internal combustion engine or internal combustion engine, which is also simply referred to as a motor and has a drive shaft.
  • the internal combustion engine is designed as a reciprocating piston engine, so that in particular the drive shaft can be designed as a crankshaft.
  • the internal combustion engine can provide first drive torques for driving the motor vehicle via the drive shaft.
  • the first drive torques are first torques for driving the motor vehicle.
  • the hybrid drive system also includes an electric machine that has a rotor.
  • the electrical machine has a stator, by means of which the rotor can be driven and thereby rotated about a machine axis of rotation relative to the stator.
  • the electric machine can provide second drive torque for driving the motor vehicle via the rotor.
  • the second drive torques are second torques for driving the motor vehicle.
  • the motor vehicle in its fully manufactured state, the motor vehicle has at least or exactly two vehicle axles, which are arranged one after the other in the longitudinal direction of the vehicle and thus one behind the other, also simply referred to as axles.
  • the respective axle has at least or exactly two vehicle wheels, also simply referred to as wheels, which are arranged on opposite sides in the transverse direction of the motor vehicle, simply referred to as vehicle.
  • the respective wheel is a ground contact element, via which the motor vehicle can be supported or supported downwards on a ground in the vertical direction of the vehicle.
  • the motor vehicle is driven along the ground and driven by the hybrid drive system, while the motor vehicle is driven downwards in the vehicle's vertical direction over the ground contact elements on the ground is supported, the ground contact elements roll, in particular directly, on the ground.
  • the hybrid drive system is, in particular, assigned to one of the axles, so that, for example, the wheels of the axle to which the hybrid drive system is assigned can be driven by means of the hybrid drive system.
  • the internal combustion engine can drive the same wheels of the axle to which the hybrid drive system is assigned via its drive shaft and the electric machine via its rotor.
  • the motor vehicle can be driven by driving the wheels.
  • the wheels that can be driven by means of the hybrid drive system i.e. by means of the internal combustion engine and by means of the electric machine, are also referred to as drivable or driven wheels or as drive wheels.
  • this refers to the wheels of the axle that can be driven by the hybrid drive system and to which the hybrid drive system is assigned.
  • the hybrid drive system includes an axle drive, which is in particular assigned to the axle to which the hybrid drive system is assigned.
  • the wheels can be driven by the internal combustion engine and by the electric machine via the axle drive.
  • the axle gear is a differential gear, also simply referred to as a differential, which in particular has the function well known from the general state of the art that a respective third torque can be distributed to the wheels via the axle gear, so that the wheels via the axle gear by means of the respective third torque can be driven.
  • the respective third torque results from the respective first drive torque and/or from the respective second drive torque.
  • the axle gear allows the wheels to rotate at different speeds, for example when the motor vehicle is cornering, so that, for example, the wheel on the outside of the curve can rotate at a higher speed than the wheel on the inside of the curve, in particular while the wheels are driven via the axle gear by means of the third torque or from the internal combustion engine and/or or can be driven or driven by the electric machine.
  • the axle gear has an axle gear input wheel, via which the axle gear can be driven, in particular in such a way that the respective third torque can be introduced into the axle gear via the axle gear input wheel or can be transferred to the axle gear.
  • the axle gear input gear is a first gear of the hybrid drive system and is therefore also referred to as the axle gear input gear.
  • this can Axle gear input wheel can be designed as a ring gear.
  • the axle gear can be designed as a bevel gear differential or, for example, as a planetary gear differential.
  • the hybrid drive system also has a transmission, also referred to as a main transmission and in particular provided in addition to the axle transmission, which has a first sub-transmission and a second sub-transmission.
  • a transmission also referred to as a main transmission and in particular provided in addition to the axle transmission, which has a first sub-transmission and a second sub-transmission.
  • the axle transmission can be driven via the transmission by the internal combustion engine and by the electric machine, so that, for example, the transmission can provide the respective third torque, or the transmission can, for example, provide a respective fourth torque, from which, for example, the respective third torque results. It is conceivable that the respective fourth torque results from the respective first drive torque and/or from the respective second drive torque.
  • the first partial transmission has a first planetary gear set, which is also simply referred to as the first planetary gear set.
  • the first planetary gear set has a first sun gear, a first planet carrier, which is also referred to as the first web, and a first ring gear.
  • the first sun gear, the first planet carrier and the first ring gear are also referred to as planetary gear set elements of the first planetary gear set, therefore the first sun gear, the first planet carrier and the first ring gear are planetary gear set elements of the first planetary gear set.
  • a first of the planetary gear set elements of the first planetary gear set is also referred to as the first element
  • a second of the planetary gear set elements of the first planetary gear set is also referred to as the second element
  • the third planetary gear set element of the first planetary gear set is also referred to as the third element.
  • the first partial transmission also has a second planetary gear set, which is provided in particular in addition to the first planetary gear set, which is also simply referred to as a second planetary gear set.
  • the second planetary gear set has a second sun gear, a second planet carrier, which is also referred to as a second web, and a second ring gear.
  • the second sun gear, the second planet carrier and the second ring gear are also referred to as gear elements of the second planetary gear set or are gear elements of the second planetary gear set.
  • a first of the gear elements of the second planetary gear set is also referred to as the fourth element
  • a second of the gear elements of the second planetary gear set is also referred to as the fifth element
  • the third Gear element of the second planetary gear set is also referred to as the sixth element of the second planetary gear set.
  • the hybrid drive system has a housing, it being conceivable that the first planetary gear set and/or the second planetary gear set are each arranged at least partially, in particular at least predominantly and thus at least more than half or completely, in the housing is.
  • the respective planetary gear set element is not connected to the housing in a rotationally fixed manner, the respective planetary gear set element can be rotated about a first planetary gear set rotation axis relative to the housing, in particular by driving the first planetary gear set.
  • the respective gear element can be rotated relative to the housing, in particular by driving the second planetary gear set about a second planetary gear set rotation axis.
  • the planetary gear sets are arranged coaxially to one another, so that the planetary gear set rotation axes coincide.
  • the second element is permanently connected to the fourth element in a rotationally fixed manner or vice versa.
  • the second sub-transmission has a first spur gear stage, a second spur gear stage which is provided in particular in addition to the first spur gear stage and an output shaft which is provided in particular in addition to the drive shaft.
  • the first spur gear stage has a first output gear arranged coaxially to the output shaft, which can, for example, be connected to the output shaft in a rotationally fixed manner, in particular permanently.
  • the first output gear is arranged on the output shaft.
  • the first spur gear stage also has a first input gear, which meshes, in particular permanently, with the first output gear.
  • the first input gear is or can be connected to the second element in a rotationally fixed manner.
  • the first output gear is a second gear of the hybrid drive system
  • the first input gear is a third gear of the hybrid drive system
  • the second gear and the third gear are formed as spur gears could be. Since the first output gear and the second input gear mesh with one another, in particular permanently, the first output gear and the first input gear are in engagement with one another, in particular permanently.
  • gears that are permanently meshing with one another are not between a meshing position in which the gears mesh with one another, and can be moved relative to one another in a loose position, in which the gears do not mesh with one another, but rather the gears that are permanently meshing with one another are permanently, that is, always in engagement with one another.
  • the second spur gear stage has a second output gear, which is arranged coaxially to the output shaft.
  • the second output gear is, in particular permanently, connected to the output shaft in a rotationally fixed manner.
  • the second output gear is arranged on the output shaft.
  • the second spur gear stage also has a second input gear, which meshes, in particular permanently, with the second output gear.
  • the second input gear is connected or connectable to the sixth element in a rotationally fixed manner.
  • the second output gear is a fourth gear and the second input gear is a fifth gear of the hybrid drive system.
  • the fourth gear and the fifth gear of the hybrid drive system can be designed as spur gears.
  • the rotor of the electric machine is coupled or can be coupled to one of the elements in a torque-transmitting manner in such a way that the respective second drive torque, which is provided or can be provided by the electric machine via the rotor, is transmitted to the one torque-transmittingly coupled to the rotor or connectable element can be introduced into the transmission, and therefore the respective second drive torque provided or able to be provided by the electric machine via the rotor can be transferred from the rotor to the one element that is coupled or can be coupled to the rotor in a torque-transmitting manner and thus via the one that is torque-transmitting with the Rotor coupled or connectable element can be introduced into the transmission, in particular in order to thereby drive the transmission.
  • the hybrid drive system also includes an output gear, which is, for example, a sixth gear of the hybrid drive system.
  • the output gear is permanently connected to the output shaft. It is preferably provided that the output gear is arranged coaxially to the first output gear and preferably also coaxially to the second output gear. Furthermore, it is conceivable that the second output gear is arranged coaxially with the first output gear.
  • the output gear constantly meshes with the axle gear input gear of the axle gear. In particular, it is conceivable that the output gear is designed as a bevel gear.
  • the feature that two components such as the output gear and the output shaft or for example the second element and the fourth element are connected to one another in a rotationally fixed manner means that the components connected to one another in a rotationally fixed manner are arranged coaxially to one another and in particular then, when the components are driven, rotate together or simultaneously about a component rotation axis common to the components, such as the first planetary gear set rotation axis or the second planetary gear set rotation axis, with the same angular velocity, in particular relative to the housing.
  • the feature that two components are permanently connected to one another in a torque-transmitting manner means that a switching element is not provided, which can be switched between a coupling state that connects the components to one another in a torque-transmitting manner and a decoupling state in which no torques can be transmitted between the components , but the components are always or always and therefore permanently torque-transmitting, that is, connected to one another in such a way that torque can be transmitted between the components.
  • a switching element is not provided, which can be switched between a coupling state that connects the components to one another in a torque-transmitting manner and a decoupling state in which no torques can be transmitted between the components , but the components are always or always and therefore permanently torque-transmitting, that is, connected to one another in such a way that torque can be transmitted between the components.
  • one of the components can be driven by the other component or vice versa.
  • the feature that two components such as the second element and the fourth element are permanently connected to one another in a rotationally fixed manner means that a switching element is not provided which is non-rotatably connected between one of the components interconnecting coupling state and a decoupling state can be switched, in which the components are decoupled from one another and can be rotated relative to one another, in particular about the component rotation axis, so that, for example, no torques can be transmitted between the components, but rather the components are always or always, therefore permanently, rotated with one another connected or coupled.
  • a rotationally fixed connection between two, in particular rotatably mounted, elements means that these two elements are arranged coaxially to one another and are connected to one another in such a way that they rotate at the same angular velocity.
  • the feature that two components such as the rotor of the electric machine and the one torque-transmitting, in particular rotating, element can be coupled or connected to one another means that the components are assigned a switching element, also referred to as a switching element, which switches between a coupling state , in which the components are connected to one another in a torque-transmitting, in particular rotating, manner by means of the switching element, and can be switched to a decoupling state in which the components are decoupled from one another, so that the components can rotate relative to one another in particular about the component rotation axis and so that in particular no torques between the Components can be transferred.
  • a switching element also referred to as a switching element
  • the one aforementioned element that is coupled or can be coupled to the rotor of the electric machine in a torque-transmitting manner is also referred to below as the first connecting element, so that reference can be made clearly to the first connecting element in the following if this should be necessary.
  • the hybrid drive system has a first switching element, which is designed to connect the drive shaft of the internal combustion engine to one of the elements in a rotationally fixed manner.
  • the drive shaft can be connected to one of the elements in a rotationally fixed manner by means of the first switching element.
  • the one element that can be connected in a rotationally fixed manner to the drive shaft of the internal combustion engine, which is designed, for example, as a crankshaft, by means of the first switching element is also referred to below as the second connecting element in order to be able to clearly refer to the second connecting element in the following, should this be necessary.
  • the second connecting element can be the first connecting element, or preferably the second connecting element is a different element than the first connecting element.
  • the first switching element can be switched between a first coupling state and a first decoupling state.
  • the drive shaft and the second connecting element are rotatably connected to one another by means of the first switching element, so that the drive shaft and the second connecting element move together or simultaneously, that is to say with the same angular velocity, in particular about one of the planetary gear set rotation axes and/or relative to the housing , rotate or can rotate, especially when, for example, the drive shaft drives the second connecting element.
  • the first switching element allows relative rotations between the drive shaft and the second connecting element, in particular about one of the planetary gear set rotation axes.
  • the first switching element is movable, in particular translationally and/or relative to the housing, between at least one first coupling position causing the first coupling state and at least one first decoupling position causing the first decoupling state.
  • the hybrid drive system also includes a second switching element, which is designed to connect the third element to the fifth element in a rotationally fixed manner.
  • the third element can be connected in a rotationally fixed manner to the fifth element by means of the second switching element.
  • the second switching element can be switched between a second coupling state and a second decoupling state.
  • the third and fifth elements are connected to one another in a rotationally fixed manner by means of the second switching element, so that the third element and the fifth element move together or simultaneously, that is to say with the same angular velocity, in particular about the first planetary gear set rotation axis and the second planetary gear set rotation axis and/ or relative to the housing, can rotate or rotate, especially when the first partial gear is driven.
  • the second switching element allows relative rotations between the third element and the fifth element, in particular about the first and/or second planetary gear set rotation axis, so that in the second decoupling state, the third element and the fifth element can rotate relative to one another, in particular about the first or second planetary gear set rotation axis.
  • the second switching element is movable, in particular translationally and/or relative to the housing, between at least one second coupling position causing the second coupling state and at least one second decoupling position causing the second decoupling state.
  • the second spur gear stage viewed in an axial direction, is on a side of the first spur gear stage facing away from the first spur gear stage Partial transmission is arranged.
  • the second spur gear stage is arranged on a side of the first partial transmission facing away from the first spur gear stage in the axial direction.
  • axial and coaxial refer to the respective planetary gear set rotation axis, so that the aforementioned axial direction coincides with the respective planetary gear set rotation axis.
  • a coaxial arrangement of the respective output gear to the output shaft means that the output shaft and the respective output gear are rotatable about a common element axis of rotation, in particular relative to the housing, especially simultaneously.
  • ordinal numbers referred to as ordinals such as “first”, “first”, “second”, “second”, etc., are not necessarily used to indicate or imply a number or quantity, but rather to clearly refer to concepts to be able to reference to which the ordinal number words are assigned or to which the ordinal number words refer.
  • the first switching element is designed to connect the drive shaft to the fifth element in a rotationally fixed manner.
  • the second connecting element is preferably the fifth element, so that it is preferably provided that the drive shaft can be connected to the fifth element in a rotationally fixed manner by means of the first switching element.
  • the rotor of the electric machine is permanently coupled to the first element in such a way that the respective second drive torque, which is provided or can be provided by the electric machine via the rotor, is transferred to the first element into the transmission can be initiated.
  • the first connecting element is the first element of the first planetary gear set.
  • a total of exactly two planetary gear sets are provided, namely the first planetary gear set and the second planetary gear set.
  • the hybrid drive system as a whole has precisely, that is to say exclusively, two planetary gear sets, namely the first planetary gear set and the second planetary gear set.
  • the first element is the first sun gear
  • the second element is the first planet carrier
  • the third element is the first ring gear.
  • the fourth element is the second sun gear
  • the fifth element is the second planet carrier
  • the sixth element is the third ring gear.
  • the hybrid drive system has a third switching element, which is designed to connect the third element to the housing of the hybrid drive system in a rotationally fixed manner.
  • the third element can be connected to the housing in a rotationally fixed manner by means of the third switching element.
  • the third switching element can therefore be switched, for example, between a third coupling state and a third decoupling state.
  • the third element is connected to the housing in a rotationally fixed manner by means of the third switching element, so that relative rotations between the third element and the housing are prevented at least about the first planetary gear set rotation axis.
  • the third switching element allows relative rotations between the third element and the housing, in particular about the first planetary gear set rotation axis.
  • the third switching element is movable, in particular translationally and/or relative to the housing, between at least one third coupling position causing the third coupling state and at least one third decoupling position causing the third decoupling state.
  • a particularly advantageous switchability and thus a particularly advantageous multiple speed of the hybrid drive can be realized, so that a particularly advantageous drive can be represented.
  • a further embodiment is characterized by a fourth switching element, which is designed to connect the drive shaft to the first element in a rotationally fixed manner.
  • the drive shaft can be connected to the first element in a rotationally fixed manner by means of the fourth switching element.
  • the fourth switching element can be switched between a fourth coupling state and a fourth decoupling state.
  • the drive shaft is connected to the first element in a rotationally fixed manner by means of the fourth switching element, so that the first element and the drive shaft can rotate or rotate in particular about the first planetary gear set rotation axis together or simultaneously and preferably relative to the housing, in particular when the drive shaft drives the first element.
  • the fourth switching element allows relative rotations between the drive shaft and the first element, in particular about the first planetary gear set rotation axis.
  • the drive shaft is thus arranged coaxially with the first planetary gear set and/or with the second planetary gear set.
  • the fourth switching element is movable, in particular translationally and/or relative to the housing, between at least one fourth coupling position causing the fourth coupling state and at least one fourth decoupling position causing the fourth decoupling state.
  • the fourth switching element is arranged axially overlapping the electrical machine.
  • the feature “axially overlapping” is to be understood as meaning the following:
  • Two elements, such as the fourth switching element and the electrical machine, in particular the rotor, are arranged in an axially overlapping manner if they are arranged in areas of the same axial coordinates.
  • the hybrid drive system provides a fifth switching element, which is designed to connect the sixth element to the second input gear in a rotationally fixed manner.
  • the sixth element can be connected in a rotationally fixed manner to the second input gear by means of the fifth switching element.
  • the fifth switching element can be switched between a fifth coupling state and a fifth decoupling state.
  • the sixth element In the fifth coupling state, the sixth element is rotatably connected to the second input gear by means of the fifth switching element, so that the sixth element and the second input gear can rotate or rotate simultaneously or together, in particular about the second planetary gear set rotation axis and preferably relative to the housing, in particular when the second input gear drives the sixth element or vice versa.
  • the fifth switching element allows relative rotations between the sixth element and the second input gear, in particular about the second planetary gear set rotation axis.
  • the sixth element and the second input gear are arranged coaxially to one another.
  • the fifth switching element is movable, in particular translationally and/or relative to the housing, between at least one fifth coupling position causing the fifth coupling state and at least one fifth decoupling position bringing about the fifth decoupling state.
  • the hybrid drive system has a sixth switching element, which is designed to connect the first output gear to the output shaft in a rotationally fixed manner.
  • the first output gear can be connected to the output shaft in a rotationally fixed manner by means of the sixth switching element.
  • the sixth switching element can be switched between a sixth decoupling state and a sixth coupling state. In the sixth coupling state, the first output gear is connected to the output shaft in a rotationally fixed manner by means of the sixth switching element.
  • the sixth switching element allows relative rotations between the first output gear and the output shaft, these relative rotations taking place, for example, about an output shaft rotation axis about which the output shaft is rotatable in particular relative to the housing.
  • the sixth switching element in particular translationally and/or relative to the housing, is between at least one sixth coupling position causing the sixth coupling state and at least one sixth coupling position bringing about the sixth decoupling state Decoupling position movable. This makes it possible to achieve particularly advantageous switchability and multiple speeds of the hybrid drive system.
  • the first switching element, the second switching element, the third switching element, the fourth switching element, the fifth Formwork element and the sixth formwork element are arranged in the following order one after the other, that is to say sequentially: the first switching element - the fourth switching element - the fifth switching element - the sixth switching element - the third switching element - the second switching element.
  • the fourth switching element is connected to the first switching element
  • the fifth switching element is connected to the fourth switching element
  • the sixth switching element is connected to the fifth switching element
  • the third switching element is connected to the sixth switching element and that second switching element connects to the third switching element.
  • the first spur gear stage connects to the rotor wheel
  • the first partial gearbox connects to the first spur gear stage
  • the second spur gear stage connects to the first partial gearbox.
  • the rotor wheel is a seventh gear of the hybrid drive system, wherein the seventh gear can be a spur gear.
  • the rotor is coupled or can be coupled to the first connecting element by means of the rotor wheel, that is to say via the rotor wheel in a torque-transmitting manner.
  • the rotor is coupled to the first connecting element via the rotor wheel, in particular permanently, in a torque-transmitting manner.
  • an eighth gear designed in particular as a spur gear, is torque-transmitting, in particular non-rotatable, connectable or connected to the first connecting element.
  • the eighth gear is connected, in particular permanently, in a rotationally fixed manner to the first connecting element.
  • the eighth gear meshes, in particular permanently, with the rotor wheel, and is therefore, in particular permanently, in engagement with the rotor wheel.
  • the rotor wheel and the eighth gear form a third spur gear stage, which is provided in particular in addition to the first spur gear stage and in addition to the second spur gear stage.
  • the eighth gear is arranged coaxially to the first connecting element, so that, in particular when the eighth gear is not connected to the housing in a rotationally fixed manner, the eighth gear rotates about the first planetary gear set rotation axis and/or the second planetary gear set rotation axis relative to the housing is rotatable.
  • the drive shaft is arranged coaxially to the first partial transmission and thus coaxially to the first planetary gear set and preferably also coaxially to the second planetary gear set.
  • the output gear is preferably arranged axially, that is to say in the axial direction and thus viewed along the respective planetary gear set rotation axis between the internal combustion engine and the first sub-transmission.
  • the output gear is preferably arranged in a plane which runs perpendicular to the axial direction and thus perpendicular to the respective planetary gear set rotation axis, the plane being arranged between the internal combustion engine and the first partial transmission when viewed in the axial direction and thus along the respective planetary gear set rotation axis.
  • the first switching element is arranged axially overlapping the electrical machine, in particular the rotor and/or the stator.
  • a second aspect of the invention relates to a motor vehicle, also simply referred to as a vehicle, which can be designed, for example, as a motor vehicle, in particular as a passenger car.
  • the motor vehicle has a hybrid drive system according to the first aspect of the invention.
  • the motor vehicle can be driven by means of the hybrid drive system.
  • Advantages and advantageous refinements of the first aspect of the invention are to be viewed as advantages and advantageous refinements of the second aspect of the invention and vice versa.
  • the invention enables an embodiment of the hybrid drive system or the transmission as a multi-stage transmission, in particular based on coupled planetary gear sets in the form of the first planetary gear set and the second planetary gear set, in particular in an axially parallel design.
  • the invention makes it possible in particular to keep the power loss particularly low.
  • up to 6 hybrid or combustion engine forward gears and one hybrid reverse gear can be implemented.
  • at least or exactly two electric gears and various continuously variable driving ranges can be implemented.
  • the invention also enables the realization of a particularly large spread.
  • the planetary gear sets are preferably designed as single planetary gear sets.
  • At least one of the switching elements can be designed as a positive switching element, in particular as a claw clutch, in particular with or without a synchronization unit, whereby losses can be kept particularly low.
  • the electric machine can be arranged coaxially with the planetary gear sets. Furthermore, an axially parallel arrangement of the electrical machine is conceivable. When the electric machine is arranged coaxially, the axis of rotation of the machine coincides with the axis of rotation of the respective planetary gear set. In the case of axially parallel, the machine axis of rotation runs parallel to the respective planetary gear set rotation axis, with the machine rotation axis being spaced from the respective planetary gear set rotation axis. Further positive switching elements, in particular claw switching elements, are conceivable, whereby losses can be kept particularly low.
  • the invention also enables the realization of advantageous gearing efficiencies.
  • 1 shows a schematic representation of a first embodiment of a hybrid drive system for a motor vehicle
  • 2 shows a schematic representation of a second embodiment of the hybrid drive system
  • Fig. 3 is a schematic representation of a third embodiment of the hybrid drive system.
  • FIG. 1 shows a schematic representation of a first embodiment of a hybrid drive system 10 for a motor vehicle, also referred to as a vehicle.
  • the motor vehicle is preferably designed as a motor vehicle.
  • the motor vehicle has, for example, at least or exactly two vehicle axles arranged one behind the other in the longitudinal direction of the vehicle.
  • the respective vehicle axle is also simply referred to as an axle and has at least or exactly two vehicle wheels, the vehicle wheels being ground contact elements of the motor vehicle.
  • the hybrid drive system 10 is assigned, in particular precisely, to one of the axles, so that the vehicle wheels of the vehicle axle to which the hybrid drive system 10 is assigned can be driven by means of the hybrid drive system 10.
  • the vehicle wheels of the vehicle axle that can be driven by means of the hybrid drive system 10 and to which the hybrid drive system 10 is assigned are shown particularly schematically in FIG. 1 and are designated 12 and 14.
  • the hybrid drive system 10 has an internal combustion engine 16, which is also referred to as an internal combustion engine, motor or internal combustion engine.
  • the internal combustion engine has a cylinder housing 18, also referred to as an engine block, which has a plurality of cylinders 20. When the internal combustion engine is fired, 20 combustion processes take place in the cylinders.
  • the internal combustion engine 16 is designed as a reciprocating piston engine.
  • the internal combustion engine 16 has a drive shaft 21 designed, for example, as a crankshaft, which is rotatable about a drive shaft rotation axis relative to the cylinder housing 18.
  • the internal combustion engine 16 can provide first drive torque via the drive shaft 21 for driving the vehicle wheels 12 and 14 and thus for driving the motor vehicle.
  • the hybrid drive system 10 also includes an electric machine 22, which has a stator 24 and a rotor 26.
  • the rotor 26 can be driven by means of the stator 24 and can therefore be rotated about a machine axis of rotation relative to a stator 24.
  • the hybrid drive system 10 also includes a housing 28, shown particularly schematically in FIG. wherein the drive shaft 21 is rotatable about the drive shaft rotation axis and the rotor 26 is rotatable about the machine rotation axis relative to the housing 28.
  • the electric machine 22 can provide second drive torque via the rotor 26 for driving the vehicle wheels 12 and 14 and thus for driving the motor vehicle.
  • the hybrid drive system 10 also has an axle gear 30 designed as a differential gear and also simply referred to as a differential, via which the vehicle wheels 12 and 14 can be driven by the electric machine 22 and by the internal combustion engine 16.
  • the axle gear 30 is designed, for example, as a bevel gear differential.
  • the axle gear 30 has an axle gear housing 32, which in the present case is designed, for example, as a so-called differential cage.
  • the axle gear 30 includes an axle gear input wheel 34, which is connected, in particular permanently, in a rotationally fixed manner to the axle gear housing 32.
  • the axle gear housing 32 and the axle gear input gear 34 are rotatable about an axle gear rotation axis relative to the housing 28.
  • the axle gear 30 has compensating gears 38 designed as bevel gears, which can be rotated with the axle gear housing 32 about the axle gear rotation axis relative to the housing 28.
  • the compensating wheels 38 can rotate about a particular common compensating wheel rotation axis, which runs perpendicular to the axle gear rotation axis.
  • the compensating wheels 38 mesh, in particular permanently, with side wheels 40 of the axle gear 30.
  • the respective compensating wheel 38 is rotatable relative to the axle gear housing 32 about the compensating wheel rotation axis, which runs perpendicular to the axle gear rotation axis.
  • the respective side wheel 40 is rotatable about the axle gear rotation axis relative to the housing 28 and also relative to the axle gear housing 32.
  • the respective side wheel 40 is connected to a respective side shaft 42, in particular permanently, in a rotationally fixed manner, with the respective vehicle wheel 12, 14 being drivable by the respective side shaft 42.
  • the side gears 40 can be designed as bevel gears.
  • the compensating gears 38 and the side gears 40 are gears which mesh with one another, in particular permanently.
  • the hybrid drive system 10 also includes a transmission 44, also referred to as a main transmission, which has a first sub-transmission 46 and a second sub-transmission 48.
  • the first partial transmission 46 has a first planetary gear set 50 and a second planetary gear set 52, which in the present case are arranged coaxially to one another.
  • the first planetary gear set 50 has a first element 54 in the form of a first sun gear, a second element 56 in the form of a first planet carrier, which is also referred to as a first web, and a third element 58 in the form of a first ring gear.
  • the first planetary gear set 50 has first planet gears 60, which are rotatably mounted on the first planet carrier 56 and at the same time mesh with both the first sun gear 54 and the first ring gear 58.
  • the second planetary gear set 52 has a fourth element 62 in the form of a second sun gear, a fifth element 64 in the form of a second planet carrier and a sixth element 66 in the form of a second ring gear.
  • the second planetary gear set 52 has second planet gears 68, which are rotatably mounted on the planet carrier 64 and at the same time mesh with both the second sun gear 62 and the ring gear 66.
  • the first sun gear is the first element 54
  • the first planet carrier is the second element 56
  • the first ring gear is the third element 58.
  • the second sun gear is the fourth element 62
  • the second planet carrier is the fifth element 64 and the second ring gear the sixth element 66.
  • the second element (first planet carrier) 56 is permanently connected to the fourth element (second sun gear) 62 in a rotationally fixed manner.
  • the second partial transmission 48 has a first spur gear stage 70.
  • the second partial transmission 48 includes an output shaft 72, which is rotatable in particular about an output shaft rotation axis relative to the housing 28.
  • the respective element is not connected to the housing 28 in a rotationally fixed manner, the respective element is rotatable about a planetary gear set rotation axis relative to the housing 28.
  • the planetary gear set rotation axis is a planetary gear set rotation axis common to the planetary gear sets 50 and 52, since the planetary gear sets 50 and 52 are arranged coaxially to one another.
  • the internal combustion engine 16 or the drive shaft 21 is arranged coaxially to the planetary gear sets 50 and 52, so that the drive shaft rotation axis coincides with the planetary gear set rotation axis.
  • the output shaft 72 is arranged axially parallel to the planetary gear sets 50 and 52 and also axially parallel to the drive shaft 21, so that the output shaft rotation axis runs parallel to the planetary gear set rotation axis and parallel to the drive shaft rotation axis and is spaced from the planetary gear set rotation axis and from the drive shaft rotation axis.
  • the electric machine 22, that is, you Rotor 26 is arranged axially parallel to the output shaft 72, axially parallel to the planetary gear sets 50 and 52 and axially parallel to the internal combustion engine 16, so that the machine axis of rotation runs parallel to the output shaft axis of rotation, parallel to the planetary gear set rotation axis and parallel to the drive shaft rotation axis and from the output shaft rotation axis, from the planetary gear set rotation axis and from the drive shaft rotation axis is spaced apart.
  • the axle gear axis of rotation also runs parallel to the machine axis of rotation, parallel to the output shaft axis of rotation, parallel to the planetary gear set axis of rotation and parallel to the drive shaft axis of rotation and is spaced from these, so that the axle gear 30 is axially parallel to the output shaft 72, to the electric machine 22, to the internal combustion engine 16 or to the drive shaft 21 and to the Planetary gear sets 50 and 52 are arranged.
  • the first spur gear stage 70 has a first output gear 74, which is arranged coaxially with the output shaft 72.
  • the output gear 74 is connected, in particular permanently, to the output shaft 72 in a rotationally fixed manner.
  • the output gear 74 is arranged on the output shaft 72.
  • the first spur gear stage 70 also includes an input gear 76, which meshes, in particular permanently, with the first output gear 74.
  • the first input gear 76 is connected, in particular permanently, in a rotationally fixed manner to the first element (first sun gear 54).
  • the second partial transmission 48 also includes a second spur gear stage 86, which has a second output gear 88 and a second input gear 90.
  • the output gear 88 is arranged coaxially with the output shaft 72.
  • the output gear 88 is connected, in particular permanently, to the output shaft 72 in a rotationally fixed manner.
  • the output gear 88 can be arranged on the output shaft 72.
  • the second input gear 90 permanently meshes with the output gear 88.
  • the second input gear 90 can be connected in a rotationally fixed manner to the sixth element (ring gear 66).
  • the rotor 26 is permanently torque-transmittingly coupled to the first element (sun gear 54) in such a way that the respective second drive torque provided or able to be provided by the electric machine 22 via its rotor 26 or a torque resulting therefrom is transmitted to the first element ( Sun gear 54), that is, can be introduced into the transmission 44 via the sun gear 54.
  • the hybrid drive system 10 also includes Output gear 78, which is permanently connected to the output shaft 72 in rotation. The output gear 78 permanently meshes with the axle drive input gear 34.
  • the hybrid drive system 10 includes a first switching element 80, by means of which the drive shaft 21 of the internal combustion engine 16 can be rotatably connected to one of the elements.
  • the one element that can be connected in a rotationally fixed manner to the drive shaft 21 by means of the first switching element 80 is also referred to as a connecting element and in the present case is the fifth element (second planet carrier) 64, so that in the first embodiment the second planet carrier is connected in a rotationally fixed manner to the drive shaft 21 by means of the first switching element 80 is connectable.
  • the hybrid drive system 10 also includes a second switching element 82, by means of which the third element (first ring gear) 58 can be connected in a rotationally fixed manner to the fifth element (second planet carrier) 64.
  • the second spur gear stage 86 viewed in the axial direction, is arranged on a side S of the first partial transmission 46, in particular of the second planetary gear set 52, facing away from the first spur gear stage 70.
  • the second spur gear stage 86 is arranged on the side S of the partial transmission 46, in particular of the second planetary gear set 52, which is facing away or pointing away from the first spur gear stage 70 in the axial direction of the respective planetary gear set 50, 52 and thus along the planetary gear set rotation axis.
  • the hybrid drive system 10 has a total of exactly two planetary gear sets, namely the first planetary gear set 50 and the second planetary gear set 52.
  • the hybrid drive system 10 also includes a third switching element 84, by means of which the third element (first ring gear) 58 can be connected to the housing 28 in a rotationally fixed manner. Furthermore, the hybrid drive system 10 includes a fourth switching element 92, by means of which the drive shaft 21 can be connected in a rotationally fixed manner to the first element (first sun gear) 54. In order to be able to keep the installation space requirement of the hybrid drive system 10 particularly low, particularly in the axial direction of the respective planetary gear set 50, 52 and thus along the planetary gear set rotation axis, it is provided that the fourth switching element 92 is arranged axially overlapping the electric machine 22.
  • the hybrid drive system 10 also includes a fifth switching element 94, by means of which the sixth element (second ring gear) 66 rotates with the second Input gear 90 can be connected.
  • a sixth switching element 96 is also provided, by means of which the first output gear 74 can be rotatably connected to the output shaft 72.
  • the output gear 74 is arranged on the output shaft 72, for example. In particular, the output gear 74 is arranged coaxially with the output shaft 72.
  • the switching elements 80, 82, 84, 92, 94 and 96 are in the axial direction and thus viewed along the planetary gear set rotation axis in the following order, that is, arranged one after the other:
  • the switching elements 80, 82, 84, 92, 94 and 96 is designed as a positive switching element, in particular as a claw clutch.
  • the switching elements 80, 82, 84, 92, 94 and 96 are designed as frictional switching elements, in particular as a friction clutch and in particular as a multi-plate clutch.
  • the switching element 92 can be designed as a positive switching element, in particular as a claw clutch, in particular while the other switching elements 80, 82, 84, 92, 94 and 96 can be designed as frictional switching elements.
  • Fig. 2 shows a second embodiment of the hybrid drive system 10.
  • the switching elements 80, 82, 84, 92, 94 and 96 viewed in the axial direction and thus along the planetary gear set rotation axis, are arranged one after the other, that is to say sequentially:
  • the electric machine 22 and the internal combustion engine 16 are on the same, in the axial direction of the second Planetary gear set 52 are arranged on the side of the first planetary gear set 50 facing away from it, it is provided in the second embodiment that the planetary gear sets 50 and 52 are arranged in the axial direction between the internal combustion engine 16 and the electric machine 22, so that the internal combustion engine 16 viewed in the axial direction is on one Page of the partial transmission 46 and the electric machine 22 are arranged on a second side of the partial transmission 46 facing away from the first side in the axial direction.
  • the rotor 26 has a gear wheel referred to as a rotor wheel 98, which meshes, in particular permanently, with a corresponding, further gear wheel 100.
  • the gear 100 can be connected or connected to the first element (first sun gear) 54 in a torque-transmitting manner, in particular in a rotationally fixed manner.
  • the gear 100 is connected, in particular permanently, to the first element 54 in a rotationally fixed manner.
  • the rotor wheel 98, the first spur gear stage 70, the first partial gear 46 and the second spur gear stage 86 are arranged one after the other in the following order:
  • FIG. 3 shows a third embodiment of the hybrid drive system 10.
  • the internal combustion engine 16 and the electric machine 22 are arranged on the same side of the partial transmission 46.
  • the drive shaft 21 can be connected in a rotationally fixed manner to the first sun gear 54 (first element) by means of the first switching element 80, so that the connecting element in the third embodiment is the first sun gear (first element 54).
  • the first ring gear (third element 58) and the second planet carrier (fifth element 64) can be connected to one another in a rotationally fixed manner.
  • the third switching element 84 the first ring gear (third element 58) can be connected to the housing 28 in a rotationally fixed manner.
  • the first sun gear (first element 54) and the second planet carrier (fifth element 64) can be connected to one another in a rotationally fixed manner by means of the fourth switching element 92.
  • the second planet carrier (fifth element 64) can be connected to the drive shaft 21 in a torque-transmitting manner, in particular in a rotationally fixed manner, by means of the fourth switching element 92 and by means of the first switching element 80.
  • the first ring gear (third element 58) can be connected to the first input gear 76 in a rotationally fixed manner by means of the fifth switching element 94.
  • the sixth switching element 96 is the first Output gear 74 can be connected to the output shaft 72 in a rotationally fixed manner.
  • the switching elements 80, 82, 84, 92, 94 and 96 are arranged one after the other in the axial direction and thus viewed along the planetary gear set rotation axis in the following order: the first switching element 80 - the fourth switching element 92 - the fifth switching element 94 - the sixth Switching element 96 - the third switching element 84 - the second switching element 82.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

The invention relates to a hybrid drive system (10) for a motor vehicle, comprising an internal combustion engine (16) that has a drive shaft (21) via which first drive torques can be provided by the internal combustion engine (16) in order to drive the motor vehicle; an electric machine (22) that has a rotor (26) via which second drive torques can be provided by the electric machine (22) in order to drive the motor vehicle; an axle transmission (30) that has an axle transmission input gear (34) via which the axle transmission (30) can be driven; and a gear mechanism (44) which has a first sub-gear mechanism (46) and a second sub-gear mechanism (48), wherein the first sub-gear mechanism (46) has a first planetary gear set (50), which has a first element (54), a second element (56), and a third element (58), and a second planetary gear set (52), which has a fourth element (62) that is permanently rotationally fixed to the second element (64), a fifth element (56), and a sixth element (66).

Description

Hybridantriebssystem für ein Kraftfahrzeug sowie Kraftfahrzeug, insbesondere Kraftwagen Hybrid drive system for a motor vehicle and motor vehicle, in particular motor vehicles
Die Erfindung betrifft ein Hybridantriebssystem für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, gemäß dem Oberbegriff von Patentanspruch 1. Des Weiteren betrifft die Erfindung ein Kraftfahrzeug mit einem solchen Hybridantriebssystem. The invention relates to a hybrid drive system for a motor vehicle, in particular for a motor vehicle, according to the preamble of patent claim 1. The invention further relates to a motor vehicle with such a hybrid drive system.
Aus der US 2015 / 0 283 894 A1 ist ein Hybridantriebssystem bekannt, wobei ein Verbrennungsmotor und eine elektrische Maschine an ein Getriebe mit zwei Teilgetrieben angebunden sind. Ein erstes der Teilgetriebe weist zwei Planetenradsätze auf. Ein zweites der Teilgetriebe weist zwei Stirnradstufen auf und ist hinsichtlich eines von dem Verbrennungsmotor ausgehenden Drehmomentenflusses dem ersten Teilgetriebe vorgelagert. From US 2015/0 283 894 A1 a hybrid drive system is known, wherein an internal combustion engine and an electric machine are connected to a transmission with two partial transmissions. A first of the partial transmissions has two planetary gear sets. A second of the partial transmissions has two spur gear stages and is located upstream of the first partial transmission with regard to a torque flow emanating from the internal combustion engine.
Aus der DE 10 2018 005 372 A1 ist ein Hybridantriebssystem bekannt, bei welchem ebenfalls zwei Teilgetriebe verwendet werden. In diesem Fall ist hinsichtlich eines von einem Verbrennungsmotor ausgehenden Drehmomentenflusses ein Planetengetriebe einem Stirnradteilgetriebe vorgeschaltet. Das Stirnradteilgetriebe ist dabei nur an eine der Wellen des Planetengetriebes angebunden. From DE 10 2018 005 372 A1 a hybrid drive system is known in which two partial transmissions are also used. In this case, with regard to a torque flow emanating from an internal combustion engine, a planetary gear is connected upstream of a spur gear partial gear. The spur gear is only connected to one of the shafts of the planetary gear.
Die DE 10 2017 006 082 A1 offenbart eine Hybridantriebsvorrichtung, mit einem Verbrennungsmotor und mit einer elektrischen Maschine, die einen Rotor aufweist. Ein hinsichtlich eines von dem Verbrennungsmotor ausgehenden Drehmomentenflusses einem Planetengetriebe nachgeschaltetes Stirnradteilgetriebe ist dabei an zwei verschiedene Wellen des Planetengetriebes angebunden. The DE 10 2017 006 082 A1 discloses a hybrid drive device with an internal combustion engine and with an electric machine that has a rotor. A partial spur gear transmission, which is connected downstream of a planetary gear with regard to a torque flow emanating from the internal combustion engine, is connected to two different shafts of the planetary gear.
Aufgabe der vorliegenden Erfindung ist es, ein Hybridantriebssystem für ein Kraftfahrzeug sowie ein Kraftfahrzeug mit einem solchen Hybridantriebssystem zu schaffen, sodass ein besonders vorteilhafter Antrieb auf besonders bauraumgünstige Weise realisiert werden kann. Diese Aufgabe wird durch ein Hybridantriebssystem mit den Merkmalen des Patentanspruchs 1 sowie durch ein Kraftfahrzeug mit den Merkmalen des Patentanspruchs 14 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen der Erfindung sind in den übrigen Ansprüchen angegeben. The object of the present invention is to create a hybrid drive system for a motor vehicle and a motor vehicle with such a hybrid drive system, so that a particularly advantageous drive can be implemented in a particularly space-saving manner. This object is achieved by a hybrid drive system with the features of patent claim 1 and by a motor vehicle with the features of patent claim 14. Advantageous embodiments with useful developments of the invention are specified in the remaining claims.
Ein erster Aspekt der Erfindung betrifft ein auch als Hybridantriebsvorrichtung oder Hybridantriebseinrichtung bezeichnetes oder als Hybridantriebseinrichtung oder Hybridantriebsvorrichtung ausgebildetes Hybridantriebssystem für ein Kraftfahrzeug, insbesondere für einen Kraftwagen. Dies bedeutet, dass das insbesondere als Kraftwagen, ganz insbesondere als Personenkraftwagen, ausgebildete Kraftfahrzeug in seinem vollständig hergestellten Zustand das Hybridantriebssystem aufweist und mittels des Hybridantriebssystems angetrieben werden kann. Das Hybridantriebssystem weist einen auch als Brennkraftmaschine oder Verbrennungskraftmaschine bezeichneten Verbrennungsmotor auf, welcher auch einfach als Motor bezeichnet wird und eine Antriebswelle aufweist. Beispielsweise ist der Verbrennungsmotor als ein Hubkolbenmotor ausgebildet, sodass ganz insbesondere die Antriebswelle als eine Kurbelwelle ausgebildet sein kann. Über die Antriebswelle kann der Verbrennungsmotor erste Antriebsdrehmomente zum Antreiben des Kraftfahrzeugs bereitstellen. Die ersten Antriebsdrehmomente sind erste Drehmomente zum Antreiben des Kraftfahrzeugs. Das Hybridantriebssystem umfasst außerdem eine elektrische Maschine, welche einen Rotor aufweist. Beispielsweise weist die elektrische Maschine einen Stator auf, mittels welchem der Rotor antreibbar und dadurch um eine Maschinendrehachse relativ zu dem Stator drehbar ist. Über den Rotor kann die elektrische Maschine zweite Antriebsdrehmomente zum Antreiben des Kraftfahrzeugs bereitstellen. Die zweiten Antriebsdrehmomente sind zweite Drehmomente zum Antreiben des Kraftfahrzeugs. Beispielsweise weist das Kraftfahrzeug in seinem vollständig hergestellten Zustand wenigstens oder genau zwei in Fahrzeuglängsrichtung aufeinanderfolgend und somit hintereinander angeordnete, einfach auch als Achsen bezeichnete Fahrzeugachsen auf. Die jeweilige Achse weist wenigstens oder genau zwei einfach auch als Räder bezeichnete Fahrzeugräder auf, die auf in Fahrzeugquerrichtung des einfach als Fahrzeug bezeichneten Kraftfahrzeugs einander gegenüberliegenden Seiten angeordnet sind. Das jeweilige Rad ist ein Bodenkontaktelement, über welches das Kraftfahrzeug in Fahrzeughochrichtung nach unten hin an einem Boden abstützbar oder abgestützt ist. Wird das Kraftfahrzeug entlang des Bodens gefahren und dabei mittels des Hybridantriebssystems angetrieben, während das Kraftfahrzeug in Fahrzeughochrichtung nach unten hin über die Bodenkontaktelemente an dem Boden abgestützt ist, so rollen die Bodenkontaktelemente, insbesondere direkt, an dem Boden ab. Beispielsweise ist das Hybridantriebssystem, insbesondere genau, einer der Achsen zugeordnet, sodass mittels des Hybridantriebssystems beispielsweise die Räder der Achse antreibbar sind, der das Hybridantriebssystem zugeordnet ist. Somit ist es insbesondere denkbar, dass der Verbrennungsmotor über seine Antriebswelle und die elektrische Maschine über ihren Rotor dieselben Räder der Achse antreiben können, der das Hybridantriebssystem zugeordnet ist. Durch Antreiben der Räder kann das Kraftfahrzeug angetrieben werden. Die mittels des Hybridantriebssystems, mithin mittels des Verbrennungsmotors und mittels der elektrischen Maschine antreibbaren Räder werden auch als antreibbare oder angetriebene Räder oder als Antriebsräder bezeichnet. Wenn im Folgenden die Rede von den Rädern oder den Fahrzeugrädern ist, so sind darunter, falls nichts anderes angegeben ist, die mittels des Hybridantriebssystems antreibbaren Räder der Achse zu verstehen, der das Hybridantriebssystem zugeordnet ist. A first aspect of the invention relates to a hybrid drive system for a motor vehicle, in particular for a motor vehicle, which is also referred to as a hybrid drive device or hybrid drive device or is designed as a hybrid drive device or hybrid drive device. This means that the motor vehicle, which is designed in particular as a motor vehicle, in particular as a passenger car, has the hybrid drive system in its fully manufactured state and can be driven by means of the hybrid drive system. The hybrid drive system has an internal combustion engine, also referred to as an internal combustion engine or internal combustion engine, which is also simply referred to as a motor and has a drive shaft. For example, the internal combustion engine is designed as a reciprocating piston engine, so that in particular the drive shaft can be designed as a crankshaft. The internal combustion engine can provide first drive torques for driving the motor vehicle via the drive shaft. The first drive torques are first torques for driving the motor vehicle. The hybrid drive system also includes an electric machine that has a rotor. For example, the electrical machine has a stator, by means of which the rotor can be driven and thereby rotated about a machine axis of rotation relative to the stator. The electric machine can provide second drive torque for driving the motor vehicle via the rotor. The second drive torques are second torques for driving the motor vehicle. For example, in its fully manufactured state, the motor vehicle has at least or exactly two vehicle axles, which are arranged one after the other in the longitudinal direction of the vehicle and thus one behind the other, also simply referred to as axles. The respective axle has at least or exactly two vehicle wheels, also simply referred to as wheels, which are arranged on opposite sides in the transverse direction of the motor vehicle, simply referred to as vehicle. The respective wheel is a ground contact element, via which the motor vehicle can be supported or supported downwards on a ground in the vertical direction of the vehicle. The motor vehicle is driven along the ground and driven by the hybrid drive system, while the motor vehicle is driven downwards in the vehicle's vertical direction over the ground contact elements on the ground is supported, the ground contact elements roll, in particular directly, on the ground. For example, the hybrid drive system is, in particular, assigned to one of the axles, so that, for example, the wheels of the axle to which the hybrid drive system is assigned can be driven by means of the hybrid drive system. It is therefore particularly conceivable that the internal combustion engine can drive the same wheels of the axle to which the hybrid drive system is assigned via its drive shaft and the electric machine via its rotor. The motor vehicle can be driven by driving the wheels. The wheels that can be driven by means of the hybrid drive system, i.e. by means of the internal combustion engine and by means of the electric machine, are also referred to as drivable or driven wheels or as drive wheels. When we talk about the wheels or vehicle wheels below, unless otherwise stated, this refers to the wheels of the axle that can be driven by the hybrid drive system and to which the hybrid drive system is assigned.
Das Hybridantriebssystem umfasst ein Achsgetriebe, welches insbesondere der Achse zugeordnet ist, der das Hybridantriebssystem zugeordnet ist. Insbesondere können die Räder über das Achsgetriebe von dem Verbrennungsmotor und von der elektrischen Maschine angetrieben werden. Ganz insbesondere ist das Achsgetriebe ein einfach auch als Differential bezeichnetes Differentialgetriebe, welches insbesondere die hinlänglich aus dem allgemeinen Stand der Technik bekannte Funktion aufweist, dass ein jeweiliges, drittes Drehmoment über das Achsgetriebe auf die Räder verteilt werden kann, sodass die Räder über das Achsgetriebe mittels des jeweiligen, dritten Drehmoments angetrieben werden können. Beispielsweise resultiert das jeweilige, dritte Drehmoment aus dem jeweiligen, ersten Antriebsdrehmoment und/oder aus dem jeweiligen, zweiten Antriebsdrehmoment. Insbesondere lässt das Achsgetriebe beispielsweise während einer Kurvenfahrt des Kraftfahrzeugs unterschiedliche Drehzahlen der Räder zu, sodass sich beispielsweise das kurvenäußere Rad mit einer größeren Drehzahl drehen kann als das kurveninnere Rad, insbesondere während die Räder über das Achsgetriebe mittels des dritten Drehmoments beziehungsweise von dem Verbrennungsmotor und/oder von der elektrischen Maschine antreibbar sind oder angetrieben werden. Das Achsgetriebe weist ein Achsgetriebeeingangsrad auf, über welches das Achsgetriebe antreibbar ist, insbesondere derart, dass das jeweilige, dritte Drehmoment über das Achsgetriebeeingangsrad in das Achsgetriebe einleitbar beziehungsweise auf das Achsgetriebe übertragbar ist. Das Achsgetriebeeingangsrad ist ein erstes Zahnrad des Hybridantriebssystems und wird daher auch als Achsgetriebeeingangszahnrad bezeichnet. Beispielsweise kann das Achsgetriebeeingangsrad als ein Tellerrad ausgebildet sein. Das Achsgetriebe kann als ein Kegelraddifferential oder auch beispielsweise als ein Planetengetriebedifferential ausgebildet sein. The hybrid drive system includes an axle drive, which is in particular assigned to the axle to which the hybrid drive system is assigned. In particular, the wheels can be driven by the internal combustion engine and by the electric machine via the axle drive. In particular, the axle gear is a differential gear, also simply referred to as a differential, which in particular has the function well known from the general state of the art that a respective third torque can be distributed to the wheels via the axle gear, so that the wheels via the axle gear by means of the respective third torque can be driven. For example, the respective third torque results from the respective first drive torque and/or from the respective second drive torque. In particular, the axle gear allows the wheels to rotate at different speeds, for example when the motor vehicle is cornering, so that, for example, the wheel on the outside of the curve can rotate at a higher speed than the wheel on the inside of the curve, in particular while the wheels are driven via the axle gear by means of the third torque or from the internal combustion engine and/or or can be driven or driven by the electric machine. The axle gear has an axle gear input wheel, via which the axle gear can be driven, in particular in such a way that the respective third torque can be introduced into the axle gear via the axle gear input wheel or can be transferred to the axle gear. The axle gear input gear is a first gear of the hybrid drive system and is therefore also referred to as the axle gear input gear. For example, this can Axle gear input wheel can be designed as a ring gear. The axle gear can be designed as a bevel gear differential or, for example, as a planetary gear differential.
Das Hybridantriebssystem weist außerdem ein auch als Hauptgetriebe bezeichnetes und insbesondere zusätzlich zu dem Achsgetriebe vorgesehenes Getriebe auf, welches ein erstes Teilgetriebe und ein zweites Teilgetriebe aufweist. Insbesondere ist es denkbar, dass das Achsgetriebe über das Getriebe von dem Verbrennungsmotor und von der elektrischen Maschine antreibbar ist, sodass beispielsweise das Getriebe das jeweilige, dritte Drehmoment bereitstellen kann, oder das Getriebe kann beispielsweise ein jeweiliges, viertes Drehmoment bereitstellen, aus welchem beispielsweise das jeweilige, dritte Drehmoment resultiert. Dabei ist es denkbar, dass das jeweilige, vierte Drehmoment aus dem jeweiligen, ersten Antriebsdrehmoment und/oder aus dem jeweiligen, zweiten Antriebsdrehmoment resultiert. The hybrid drive system also has a transmission, also referred to as a main transmission and in particular provided in addition to the axle transmission, which has a first sub-transmission and a second sub-transmission. In particular, it is conceivable that the axle transmission can be driven via the transmission by the internal combustion engine and by the electric machine, so that, for example, the transmission can provide the respective third torque, or the transmission can, for example, provide a respective fourth torque, from which, for example, the respective third torque results. It is conceivable that the respective fourth torque results from the respective first drive torque and/or from the respective second drive torque.
Das erste Teilgetriebe weist einen ersten Planetenradsatz auf, welcher einfach auch als erster Planetensatz bezeichnet wird. Der erste Planetenradsatz weist ein erstes Sonnenrad, einen ersten Planetenträger, welcher auch als erster Steg bezeichnet wird, und ein erstes Hohlrad auf. Das erste Sonnenrad, der erste Planetenträger und das erste Hohlrad werden auch als Planetenradsatzelemente des ersten Planetenradsatzes bezeichnet, mithin sind das erste Sonnenrad, der erste Planetenträger und das erste Hohlrad Planetenradsatzelemente des ersten Planetenradsatzes. Ein erstes der Planetenradsatzelemente des ersten Planetenradsatzes wird auch als erstes Element bezeichnet, ein zweites der Planetenradsatzelemente des ersten Planetenradsatzes wird auch als zweites Element bezeichnet, und das dritte Planetenradsatzelement des ersten Planetenradsatzes wird auch als drittes Element bezeichnet. The first partial transmission has a first planetary gear set, which is also simply referred to as the first planetary gear set. The first planetary gear set has a first sun gear, a first planet carrier, which is also referred to as the first web, and a first ring gear. The first sun gear, the first planet carrier and the first ring gear are also referred to as planetary gear set elements of the first planetary gear set, therefore the first sun gear, the first planet carrier and the first ring gear are planetary gear set elements of the first planetary gear set. A first of the planetary gear set elements of the first planetary gear set is also referred to as the first element, a second of the planetary gear set elements of the first planetary gear set is also referred to as the second element, and the third planetary gear set element of the first planetary gear set is also referred to as the third element.
Das erste Teilgetriebe weist außerdem einen insbesondere zusätzlich zum ersten Planetenradsatz vorgesehenen, zweiten Planetenradsatz auf, welcher auch einfach als zweiter Planetensatz bezeichnet wird. Insbesondere weist der zweite Planetenradsatz ein zweites Sonnenrad, einen zweiten Planetenträger, welcher auch als zweiter Steg bezeichnet wird, und ein zweites Hohlrad auf. Das zweite Sonnenrad, der zweite Planetenträger und das zweite Hohlrad werden auch als Getriebeelemente des zweiten Planetenradsatzes bezeichnet beziehungsweise sind Getriebeelemente des zweiten Planetenradsatzes. Ein erstes der Getriebeelemente des zweiten Planetenradsatzes wird auch als viertes Element bezeichnet, ein zweites der Getriebeelemente des zweiten Planetenradsatzes wird auch als fünftes Element bezeichnet, und das dritte Getriebeelement des zweiten Planetenradsatzes wird auch als sechstes Element des zweiten Planetenradsatzes bezeichnet. Wenn im Folgenden die Rede von den Elementen ist, so sind darunter, falls nichts anderes angegeben ist, die zuvor genannten, sechs Elemente der Planetenradsätze, nämlich das erste Element, das zweite Element, das dritte Element, das vierte Element, das fünfte Element und das sechste Element zu verstehen. The first partial transmission also has a second planetary gear set, which is provided in particular in addition to the first planetary gear set, which is also simply referred to as a second planetary gear set. In particular, the second planetary gear set has a second sun gear, a second planet carrier, which is also referred to as a second web, and a second ring gear. The second sun gear, the second planet carrier and the second ring gear are also referred to as gear elements of the second planetary gear set or are gear elements of the second planetary gear set. A first of the gear elements of the second planetary gear set is also referred to as the fourth element, a second of the gear elements of the second planetary gear set is also referred to as the fifth element, and the third Gear element of the second planetary gear set is also referred to as the sixth element of the second planetary gear set. When we talk about the elements below, unless otherwise stated, these include the previously mentioned six elements of the planetary gear sets, namely the first element, the second element, the third element, the fourth element, the fifth element and to understand the sixth element.
Insbesondere ist es denkbar, dass das Hybridantriebssystem ein Gehäuse aufweist, wobei es denkbar ist, dass der erste Planentenradsatz und/oder der zweite Planetenradsatz jeweils zumindest teilweise, insbesondere zumindest überwiegend und somit zumindest zu mehr als zur Hälfte oder aber vollständig, in dem Gehäuse angeordnet ist. Beispielsweise dann, wenn das jeweilige Planetenradsatzelement nicht drehfest mit dem Gehäuse verbunden ist, kann, insbesondere durch Antreiben des ersten Planetenradsatzes, das jeweilige Planetenradsatzelement um eine erste Planentenradsatzdrehachse relativ zu dem Gehäuse gedreht werden. Ferner ist es denkbar, dass insbesondere dann, wenn das jeweilige Getriebeelement nicht drehfest mit dem Gehäuse verbunden ist, das jeweilige Getriebeelement insbesondere durch Antreiben des zweiten Planetenradsatzes um eine zweite Planetenradsatzdrehachse relativ zu dem Gehäuse drehbar ist. Insbesondere kann vorgesehen sein, dass die Planetenradsätze koaxial zueinander angeordnet sind, sodass die Planetenradsatzdrehachsen zusammenfallen. In particular, it is conceivable that the hybrid drive system has a housing, it being conceivable that the first planetary gear set and/or the second planetary gear set are each arranged at least partially, in particular at least predominantly and thus at least more than half or completely, in the housing is. For example, if the respective planetary gear set element is not connected to the housing in a rotationally fixed manner, the respective planetary gear set element can be rotated about a first planetary gear set rotation axis relative to the housing, in particular by driving the first planetary gear set. Furthermore, it is conceivable that, in particular when the respective gear element is not connected to the housing in a rotationally fixed manner, the respective gear element can be rotated relative to the housing, in particular by driving the second planetary gear set about a second planetary gear set rotation axis. In particular, it can be provided that the planetary gear sets are arranged coaxially to one another, so that the planetary gear set rotation axes coincide.
Bei dem Hybridantriebssystem ist das zweite Element permanent drehfest mit dem vierten Element verbunden beziehungsweise umgekehrt. In the hybrid drive system, the second element is permanently connected to the fourth element in a rotationally fixed manner or vice versa.
Das zweite Teilgetriebe weist eine erste Stirnradstufe, eine insbesondere zusätzlich zur ersten Stirnradstufe vorgesehene, zweite Stirnradstufe und eine insbesondere zusätzlich zur Antriebswelle vorgesehene Abtriebswelle auf. Die erste Stirnradstufe weist ein koaxial zu der Abtriebswelle angeordnetes, erstes Ausgangszahnrad auf, welches beispielsweise, insbesondere permanent, drehfest mit der Abtriebswelle verbunden sein kann. Beispielsweise ist das erste Ausgangszahnrad auf der Abtriebswelle angeordnet. Die erste Stirnradstufe weist außerdem ein erstes Eingangszahnrad auf, welches, insbesondere permanent, mit dem ersten Ausgangszahnrad kämmt. Außerdem ist das erste Eingangszahnrad drehfest mit dem zweiten Element verbunden oder verbindbar. Das erste Ausgangszahnrad ist ein zweites Zahnrad des Hybridantriebssystems, und das erste Eingangszahnrad ist ein drittes Zahnrad des Hybridantriebssystems, wobei beispielsweise das zweite Zahnrad und das dritte Zahnrad als Stirnräder ausgebildet sein können. Da das erste Ausgangszahnrad und das zweite Eingangszahnrad, insbesondere permanent, miteinander kämmen, stehen das erste Ausgangszahnrad und das erste Eingangszahnrad, insbesondere permanent, in Eingriff miteinander. Unter dem Merkmal, dass zwei Zahnräder wie beispielsweise das erste Ausgangszahnrad und das erste Eingangszahnrad permanent miteinander kämmen, mithin permanent in Eingriff miteinander stehen, ist zu verstehen, dass die permanent miteinander kämmenden Zahnräder nicht zwischen einer Kämmstellung, in welcher die Zahnräder miteinander kämmen, und einer Losstellung relativ zueinander bewegbar sind, in welcher die Zahnräder nicht miteinander kämmen, sondern die permanent miteinander kämmenden Zahnräder stehen permanent, das heißt immer in Eingriff miteinander. The second sub-transmission has a first spur gear stage, a second spur gear stage which is provided in particular in addition to the first spur gear stage and an output shaft which is provided in particular in addition to the drive shaft. The first spur gear stage has a first output gear arranged coaxially to the output shaft, which can, for example, be connected to the output shaft in a rotationally fixed manner, in particular permanently. For example, the first output gear is arranged on the output shaft. The first spur gear stage also has a first input gear, which meshes, in particular permanently, with the first output gear. In addition, the first input gear is or can be connected to the second element in a rotationally fixed manner. The first output gear is a second gear of the hybrid drive system, and the first input gear is a third gear of the hybrid drive system, for example, the second gear and the third gear are formed as spur gears could be. Since the first output gear and the second input gear mesh with one another, in particular permanently, the first output gear and the first input gear are in engagement with one another, in particular permanently. The feature that two gears, such as the first output gear and the first input gear, permanently mesh with one another, and are therefore permanently in engagement with one another, is to be understood as meaning that the gears that are permanently meshing with one another are not between a meshing position in which the gears mesh with one another, and can be moved relative to one another in a loose position, in which the gears do not mesh with one another, but rather the gears that are permanently meshing with one another are permanently, that is, always in engagement with one another.
Die zweite Stirnradstufe weist ein zweites Ausgangszahnrad auf, welches koaxial zu der Abtriebswelle angeordnet ist. Beispielsweise ist das zweite Ausgangszahnrad, insbesondere permanent, drehfest mit der Abtriebswelle verbunden. Insbesondere ist es denkbar, dass das zweite Ausgangszahnrad auf der Abtriebswelle angeordnet ist. Die zweite Stirnradstufe weist außerdem ein zweites Eingangszahnrad auf, welches, insbesondere permanent, mit dem zweiten Ausgangszahnrad kämmt. Das zweite Eingangszahnrad ist drehfest mit dem sechsten Element verbunden oder verbindbar. Insbesondere ist das zweite Ausgangszahnrad ein viertes Zahnrad, und das zweite Eingangszahnrad ist ein fünftes Zahnrad des Hybridantriebssystems. Insbesondere können beispielsweise das vierte Zahnrad und das fünfte Zahnrad des Hybridantriebssystems als Stirnräder ausgebildet sein. The second spur gear stage has a second output gear, which is arranged coaxially to the output shaft. For example, the second output gear is, in particular permanently, connected to the output shaft in a rotationally fixed manner. In particular, it is conceivable that the second output gear is arranged on the output shaft. The second spur gear stage also has a second input gear, which meshes, in particular permanently, with the second output gear. The second input gear is connected or connectable to the sixth element in a rotationally fixed manner. Specifically, the second output gear is a fourth gear and the second input gear is a fifth gear of the hybrid drive system. In particular, for example, the fourth gear and the fifth gear of the hybrid drive system can be designed as spur gears.
Des Weiteren ist es vorgesehen, dass der Rotor der elektrischen Maschine derart mit einem der Elemente drehmomentübertragend gekoppelt oder koppelbar ist, dass das jeweilige, von der elektrischen Maschine über den Rotor bereitgestellte oder bereitstellbare, zweite Antriebsdrehmoment an dem einen, drehmomentübertragend mit dem Rotor gekoppelten oder koppelbaren Element in das Getriebe einleitbar ist, mithin das jeweilige, von der elektrischen Maschine über den Rotor bereitgestellte oder bereitstellbare, zweite Antriebsdrehmoment von dem Rotor auf das eine, drehmomentübertragend mit dem Rotor gekoppelte oder koppelbare Element übertragbar und somit über das eine, drehmomentübertragend mit dem Rotor gekoppelte oder koppelbare Element in das Getriebe einleitbar ist, insbesondere um dadurch das Getriebe anzutreiben. Furthermore, it is provided that the rotor of the electric machine is coupled or can be coupled to one of the elements in a torque-transmitting manner in such a way that the respective second drive torque, which is provided or can be provided by the electric machine via the rotor, is transmitted to the one torque-transmittingly coupled to the rotor or connectable element can be introduced into the transmission, and therefore the respective second drive torque provided or able to be provided by the electric machine via the rotor can be transferred from the rotor to the one element that is coupled or can be coupled to the rotor in a torque-transmitting manner and thus via the one that is torque-transmitting with the Rotor coupled or connectable element can be introduced into the transmission, in particular in order to thereby drive the transmission.
Das Hybridantriebssystem umfasst außerdem ein Abtriebszahnrad, welches beispielsweise ein sechstes Zahnrad des Hybridantriebssystems ist. Das Abtriebszahnrad ist permanent drehtest mit der Abtriebswelle verbunden. Vorzugsweise ist es vorgesehen, dass das Abtriebszahnrad koaxial zu dem ersten Ausgangszahnrad und vorzugsweise auch koaxial zu dem zweiten Ausgangszahnrad angeordnet ist. Ferner ist es denkbar, dass das zweite Ausgangszahnrad koaxial zu dem ersten Ausgangszahnrad angeordnet ist. Das Abtriebszahnrad kämmt permanent mit dem Achsgetriebeeingangsrad des Achsgetriebes. Insbesondere ist es denkbar, dass das Abtriebszahnrad als ein Kegelrad ausgebildet ist. The hybrid drive system also includes an output gear, which is, for example, a sixth gear of the hybrid drive system. The The output gear is permanently connected to the output shaft. It is preferably provided that the output gear is arranged coaxially to the first output gear and preferably also coaxially to the second output gear. Furthermore, it is conceivable that the second output gear is arranged coaxially with the first output gear. The output gear constantly meshes with the axle gear input gear of the axle gear. In particular, it is conceivable that the output gear is designed as a bevel gear.
Im Rahmen der vorliegenden Offenbarung ist unter dem Merkmal, dass zwei Bauelemente wie beispielsweise das Abtriebszahnrad und die Abtriebswelle oder beispielsweise das zweite Element und das vierte Element drehfest miteinander verbunden sind, zu verstehen, dass die drehfest miteinander verbundenen Bauelemente koaxial zueinander angeordnet sind und sich insbesondere dann, wenn die Bauelemente angetrieben werden, gemeinsam beziehungsweise gleichzeitig um eine den Bauelementen gemeinsame Bauelementdrehachse wie beispielsweise die erste Planetenradsatzdrehachse oder die zweite Planetenradsatzdrehachse mit der gleichen Winkelgeschwindigkeit, insbesondere relativ zu dem Gehäuse, drehen. Unter dem Merkmal, dass zwei Bauelemente wie beispielsweise der Rotor und das eine Element drehmomentübertragend miteinander gekoppelt oder verbunden sind, ist zu verstehen, dass die Bauelemente derart miteinander gekoppelt oder verbunden sind, dass Drehmomente zwischen den Bauelementen übertragen werden können, wobei dann, wenn die Bauelemente drehfest miteinander verbunden sind, die Bauelemente auch drehmomentübertragend miteinander verbunden sind. In the context of the present disclosure, the feature that two components such as the output gear and the output shaft or for example the second element and the fourth element are connected to one another in a rotationally fixed manner means that the components connected to one another in a rotationally fixed manner are arranged coaxially to one another and in particular then, when the components are driven, rotate together or simultaneously about a component rotation axis common to the components, such as the first planetary gear set rotation axis or the second planetary gear set rotation axis, with the same angular velocity, in particular relative to the housing. The feature that two components such as the rotor and the one element are coupled or connected to each other in a torque-transmitting manner is to be understood as meaning that the components are coupled or connected to one another in such a way that torques can be transmitted between the components, whereby when the Components are connected to one another in a rotationally fixed manner, the components are also connected to one another in a torque-transmitting manner.
Unter dem Merkmal, dass zwei Bauelemente permanent drehmomentübertragend miteinander verbunden sind, ist zu verstehen, dass nicht etwa ein Umschaltelement vorgesehen ist, welches zwischen einem die Bauelemente drehmomentübertragend miteinander verbindenden Koppelzustand und einem Entkoppelzustand umschaltbar ist, in welchem keine Drehmomente zwischen den Bauelementen übertragen werden können, sondern die Bauelemente sind stets beziehungsweise immer und somit permanent drehmomentübertragend, das heißt derart miteinander verbunden, dass ein Drehmoment zwischen den Bauelementen übertragen werden kann. Somit ist beispielsweise eines der Bauelemente von dem jeweils anderen Bauelement antreibbar beziehungsweise umgekehrt. Insbesondere ist unter dem Merkmal, dass zwei Bauelemente wie beispielsweise das zweite Element und das vierte Element permanent drehfest miteinander verbunden sind, zu verstehen, dass nicht etwa ein Umschaltelement vorgesehen ist, welches zwischen einem die Bauelemente drehfest miteinander verbindenden Koppelzustand und einem Entkoppelzustand umschaltbar ist, in welchem die Bauelemente voneinander entkoppelt und relativ zueinander drehbar sind, insbesondere um die Bauelementdrehachse, sodass beispielsweise keine Drehmomente zwischen den Bauelementen übertragen werden können, sondern die Bauelemente sind stets beziehungsweise immer, mithin permanent, drehtest miteinander verbunden oder gekoppelt. Somit ist im Rahmen der vorliegenden Offenbarung mit einer drehfesten Verbindung zweier insbesondere drehbar gelagerter Elemente gemeint, dass diese beiden Elemente koaxial zueinander angeordnet sind und derart miteinander verbunden sind, dass sie sich mit der gleichen Winkelgeschwindigkeit drehen. Ferner ist unter dem Merkmal, dass zwei Bauelemente wie beispielsweise der Rotor der elektrischen Maschine und das eine Element drehmomentübertragend, insbesondere drehtest, miteinander koppelbar oder verbindbar sind, zu verstehen, dass den Bauelementen ein auch als Schaltelement bezeichnetes Umschaltelement zugeordnet ist, welches zwischen einem Koppelzustand, in welchem die Bauelemente mittels des Umschaltelements drehmomentübertragend, insbesondere drehtest, miteinander verbunden sind, und einem Entkoppelzustand umschaltbar ist, in welchem die Bauelemente voneinander entkoppelt sind, sodass sich die Bauelemente insbesondere um die Bauelementdrehachse relativ zueinander drehen können und sodass insbesondere keine Drehmomente zwischen den Bauelementen übertragen werden können. The feature that two components are permanently connected to one another in a torque-transmitting manner means that a switching element is not provided, which can be switched between a coupling state that connects the components to one another in a torque-transmitting manner and a decoupling state in which no torques can be transmitted between the components , but the components are always or always and therefore permanently torque-transmitting, that is, connected to one another in such a way that torque can be transmitted between the components. Thus, for example, one of the components can be driven by the other component or vice versa. In particular, the feature that two components such as the second element and the fourth element are permanently connected to one another in a rotationally fixed manner means that a switching element is not provided which is non-rotatably connected between one of the components interconnecting coupling state and a decoupling state can be switched, in which the components are decoupled from one another and can be rotated relative to one another, in particular about the component rotation axis, so that, for example, no torques can be transmitted between the components, but rather the components are always or always, therefore permanently, rotated with one another connected or coupled. Thus, in the context of the present disclosure, a rotationally fixed connection between two, in particular rotatably mounted, elements means that these two elements are arranged coaxially to one another and are connected to one another in such a way that they rotate at the same angular velocity. Furthermore, the feature that two components such as the rotor of the electric machine and the one torque-transmitting, in particular rotating, element can be coupled or connected to one another means that the components are assigned a switching element, also referred to as a switching element, which switches between a coupling state , in which the components are connected to one another in a torque-transmitting, in particular rotating, manner by means of the switching element, and can be switched to a decoupling state in which the components are decoupled from one another, so that the components can rotate relative to one another in particular about the component rotation axis and so that in particular no torques between the Components can be transferred.
Das eine, zuvor genannte, mit dem Rotor der elektrischen Maschine drehmomentübertragend gekoppelte oder koppelbare Element wird im Folgenden auch als erstes Verbindungselement bezeichnet, sodass im Folgenden eindeutig auf das erste Verbindungselement Bezug genommen werden kann, wenn dies erforderlich sein sollte. The one aforementioned element that is coupled or can be coupled to the rotor of the electric machine in a torque-transmitting manner is also referred to below as the first connecting element, so that reference can be made clearly to the first connecting element in the following if this should be necessary.
Das Hybridantriebssystem weist ein erstes Schaltelement auf, welches dazu ausgebildet ist, die Antriebswelle des Verbrennungsmotors drehfest mit einem der Elemente zu verbinden. Mit anderen Worten ist mittels des ersten Schaltelements die Antriebswelle drehfest mit einem der Elemente verbindbar. Das eine, mittels des ersten Schaltelements drehfest mit der beispielsweise als Kurbelwelle ausgebildeten Antriebswelle des Verbrennungsmotors verbindbare Element wird im Folgenden auch als zweites Verbindungselement bezeichnet, um im Folgenden eindeutig auf das zweite Verbindungselement Bezug nehmen zu können, falls dies erforderlich sein sollte. Das zweite Verbindungselement kann das erste Verbindungselement sein, oder vorzugsweise ist das zweite Verbindungselement ein gegenüber dem ersten Verbindungselement anderes Element. Insbesondere kann das erste Schaltelement zwischen einem ersten Koppelzustand und einem ersten Entkoppelzustand umgeschaltet werden. In dem ersten Koppelzustand sind mittels des ersten Schaltelements die Antriebswelle und das zweite Verbindungselement drehtest miteinander verbunden, sodass sich die Antriebswelle und das zweite Verbindungselement gemeinsam beziehungsweise gleichzeitig, das heißt mit der gleichen Winkelgeschwindigkeit, insbesondere um eine der Planetenradsatzdrehachsen und/oder relativ zu dem Gehäuse, drehen oder drehen können, insbesondere dann, wenn beispielsweise die Antriebswelle das zweite Verbindungselement antreibt. In dem ersten Entkoppelzustand lässt das erste Schaltelement insbesondere um eine der Planetenradsatzdrehachsen erfolgende Relativdrehungen zwischen der Antriebswelle und dem zweiten Verbindungselement zu. Beispielsweise ist das erste Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den ersten Koppelzustand bewirkenden, ersten Koppelstellung und wenigstens einer den ersten Entkoppelzustand bewirkenden, ersten Entkoppelstellung bewegbar. The hybrid drive system has a first switching element, which is designed to connect the drive shaft of the internal combustion engine to one of the elements in a rotationally fixed manner. In other words, the drive shaft can be connected to one of the elements in a rotationally fixed manner by means of the first switching element. The one element that can be connected in a rotationally fixed manner to the drive shaft of the internal combustion engine, which is designed, for example, as a crankshaft, by means of the first switching element is also referred to below as the second connecting element in order to be able to clearly refer to the second connecting element in the following, should this be necessary. The second connecting element can be the first connecting element, or preferably the second connecting element is a different element than the first connecting element. In particular, the first switching element can be switched between a first coupling state and a first decoupling state. In the first coupling state, the drive shaft and the second connecting element are rotatably connected to one another by means of the first switching element, so that the drive shaft and the second connecting element move together or simultaneously, that is to say with the same angular velocity, in particular about one of the planetary gear set rotation axes and/or relative to the housing , rotate or can rotate, especially when, for example, the drive shaft drives the second connecting element. In the first decoupling state, the first switching element allows relative rotations between the drive shaft and the second connecting element, in particular about one of the planetary gear set rotation axes. For example, the first switching element is movable, in particular translationally and/or relative to the housing, between at least one first coupling position causing the first coupling state and at least one first decoupling position causing the first decoupling state.
Das Hybridantriebssystem umfasst außerdem ein zweites Schaltelement, welches dazu ausgebildet ist, das dritte Element drehfest mit dem fünften Element zu verbinden. Mit anderen Worten ist das dritte Element mittels des zweiten Schaltelements drehfest mit dem fünften Element verbindbar. Somit ist beispielsweise das zweite Schaltelement zwischen einem zweiten Koppelzustand und einem zweiten Entkoppelzustand umschaltbar. In dem zweiten Koppelzustand sind mittels des zweiten Schaltelements das dritte und das fünfte Element drehfest miteinander verbunden, sodass sich das dritte Element und das fünfte Element gemeinsam beziehungsweise gleichzeitig, das heißt mit der gleichen Winkelgeschwindigkeit, insbesondere um die erste Planetenradsatzdrehachse und die zweite Planetenradsatzdrehachse und/oder relativ zu dem Gehäuse, drehen oder drehen können, insbesondere dann, wenn das erste Teilgetriebe angetrieben wird. In dem zweiten Entkoppelzustand lässt das zweite Schaltelement insbesondere um die erste und/oder zweite Planetenradsatzdrehachse erfolgende Relativdrehungen zwischen dem dritten Element und dem fünften Element zu, sodass sich in dem zweiten Entkoppelzustand das dritte Element und das fünfte Element relativ zueinander drehen können, insbesondere um die erste beziehungsweise zweite Planetenradsatzdrehachse. Beispielsweise ist das zweite Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den zweiten Koppelzustand bewirkenden, zweiten Koppelstellung und wenigstens einer den zweiten Entkoppelzustand bewirkenden, zweiten Entkoppelstellung bewegbar. Um nun eine besonders vorteilhafte Fahrbarkeit auf besonders bauraumgünstige Weise, das heißt einen besonders kompakten und somit bauraumgünstigen Aufbau des Hybridantriebssystems realisieren zu können, ist es erfindungsgemäß vorgesehen, dass die zweite Stirnradstufe in einer axialen Richtung betrachtet auf einer von der ersten Stirnradstufe abgewandten Seite des ersten Teilgetriebes angeordnet ist. Mit anderen Worten ist es erfindungsgemäß vorgesehen, dass die zweite Stirnradstufe auf einer in axialer Richtung von der ersten Stirnradstufe abgewandten Seite des ersten Teilgetriebes angeordnet ist. The hybrid drive system also includes a second switching element, which is designed to connect the third element to the fifth element in a rotationally fixed manner. In other words, the third element can be connected in a rotationally fixed manner to the fifth element by means of the second switching element. Thus, for example, the second switching element can be switched between a second coupling state and a second decoupling state. In the second coupling state, the third and fifth elements are connected to one another in a rotationally fixed manner by means of the second switching element, so that the third element and the fifth element move together or simultaneously, that is to say with the same angular velocity, in particular about the first planetary gear set rotation axis and the second planetary gear set rotation axis and/ or relative to the housing, can rotate or rotate, especially when the first partial gear is driven. In the second decoupling state, the second switching element allows relative rotations between the third element and the fifth element, in particular about the first and/or second planetary gear set rotation axis, so that in the second decoupling state, the third element and the fifth element can rotate relative to one another, in particular about the first or second planetary gear set rotation axis. For example, the second switching element is movable, in particular translationally and/or relative to the housing, between at least one second coupling position causing the second coupling state and at least one second decoupling position causing the second decoupling state. In order to be able to realize a particularly advantageous drivability in a particularly space-saving manner, that is to say a particularly compact and therefore space-saving design of the hybrid drive system, it is provided according to the invention that the second spur gear stage, viewed in an axial direction, is on a side of the first spur gear stage facing away from the first spur gear stage Partial transmission is arranged. In other words, it is provided according to the invention that the second spur gear stage is arranged on a side of the first partial transmission facing away from the first spur gear stage in the axial direction.
Die Begriffe „axial“ und „koaxial“ beziehen sich auf die jeweilige Planetenradsatzdrehachse, sodass die zuvor genannte, axiale Richtung mit der jeweiligen Planetenradsatzdrehachse zusammenfällt. Beispielsweise im Hinblick auf die Abtriebswelle und das jeweilige Ausgangszahnrad ist unter einer koaxialen Anordnung des jeweiligen Ausgangszahnrads zu der Abtriebswelle zu verstehen, dass die Abtriebswelle und das jeweilige Ausgangszahnrad um eine gemeinsame Elementdrehachse insbesondere relativ zu dem Gehäuse, ganz besonders gleichzeitig, drehbar sind. Im Rahmen der vorliegenden Offenbarung werden auch als Ordinalia bezeichnete Ordnungszahlwörter wie zum Beispiel „erste“, „erstes“, „zweiter“, „zweites“ etc. nicht notwendigerweise verwendet, um eine Anzahl oder Menge anzugeben oder zu implizieren, sondern um eindeutig auf Begriffe referenzieren zu können, denen die Ordnungszahlwörter zugeordnet sind beziehungsweise auf die sich die Ordnungszahlwörter beziehen. The terms “axial” and “coaxial” refer to the respective planetary gear set rotation axis, so that the aforementioned axial direction coincides with the respective planetary gear set rotation axis. For example, with regard to the output shaft and the respective output gear, a coaxial arrangement of the respective output gear to the output shaft means that the output shaft and the respective output gear are rotatable about a common element axis of rotation, in particular relative to the housing, especially simultaneously. In the context of the present disclosure, ordinal numbers referred to as ordinals, such as “first”, “first”, “second”, “second”, etc., are not necessarily used to indicate or imply a number or quantity, but rather to clearly refer to concepts to be able to reference to which the ordinal number words are assigned or to which the ordinal number words refer.
In besonders vorteilhafter Ausgestaltung der Erfindung ist das erste Schaltelement dazu ausgebildet, die Antriebswelle drehfest mit dem fünften Element zu verbinden. Mit anderen Worten handelt es sich somit vorzugszweise bei dem zweiten Verbindungselement um das fünfte Element, sodass es vorzugsweise vorgesehen ist, das mittels des ersten Schaltelements die Antriebswelle drehfest mit dem fünften Element verbindbar ist. Hierdurch können eine besonders vorteilhafte Schaltbarkeit und somit eine besonders vorteilhafte Mehrgängigkeit und somit Fahrbarkeit realisiert werden. In a particularly advantageous embodiment of the invention, the first switching element is designed to connect the drive shaft to the fifth element in a rotationally fixed manner. In other words, the second connecting element is preferably the fifth element, so that it is preferably provided that the drive shaft can be connected to the fifth element in a rotationally fixed manner by means of the first switching element. In this way, a particularly advantageous switchability and thus a particularly advantageous multiple gears and thus drivability can be achieved.
Bei einer besonders vorteilhaften Ausführungsform der Erfindung ist es vorgesehen, dass der Rotor der elektrischen Maschine derart permanent mit dem ersten Element gekoppelt ist, das das jeweilige, von der elektrischen Maschine über den Rotor bereitgestellte oder bereitstellbare, zweite Antriebsdrehmoment an dem ersten Element in das Getriebe einleitbar ist. Mit anderen Worten ist es vorzugsweise vorgesehen, dass es sich bei dem ersten Verbindungselement um das erste Element des ersten Planetenradsatzes handelt. Dadurch kann eine besonders vorteilhafte Übersetzung und somit eine besonders vorteilhafte Fahrbarkeit auf bauraumgünstige Weise dargestellt werden. In a particularly advantageous embodiment of the invention, it is provided that the rotor of the electric machine is permanently coupled to the first element in such a way that the respective second drive torque, which is provided or can be provided by the electric machine via the rotor, is transferred to the first element into the transmission can be initiated. In other words, it is preferably provided that the first connecting element is the first element of the first planetary gear set. As a result, a particularly advantageous translation and thus particularly advantageous drivability can be presented in a space-saving manner.
Um den Bauraumbedarf, die Kosten und das Gewicht gering halten zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass insgesamt genau zwei Planetenradsätze vorgesehen sind, nämlich der erste Planetenradsatz und der zweite Planetenradsatz. Mit anderen Worten ist es vorzugsweise vorgesehen, dass das Hybridantriebssystem insgesamt genau, das heißt ausschließlich zwei Planetenradsätze aufweist, nämlich den ersten Planetenradsatz und den zweiten Planetenradsatz. In order to be able to keep the installation space requirement, the costs and the weight low, it is provided in a further embodiment of the invention that a total of exactly two planetary gear sets are provided, namely the first planetary gear set and the second planetary gear set. In other words, it is preferably provided that the hybrid drive system as a whole has precisely, that is to say exclusively, two planetary gear sets, namely the first planetary gear set and the second planetary gear set.
Ganz vorzugsweise ist es vorgesehen, dass das erste Element das erste Sonnenrad, das zweite Element der erste Planetenträger und das dritte Element das erste Hohlrad ist. Alternativ oder zusätzlich ist es vorzugsweise vorgesehen, dass das vierte Element das zweite Sonnenrad, das fünfte Element der zweite Planetenträger und das sechste Element das dritte Hohlrad ist. It is very preferably provided that the first element is the first sun gear, the second element is the first planet carrier and the third element is the first ring gear. Alternatively or additionally, it is preferably provided that the fourth element is the second sun gear, the fifth element is the second planet carrier and the sixth element is the third ring gear.
In weiterer, besonders vorteilhafter Ausgestaltung der Erfindung weist das Hybridantriebssystem ein drittes Schaltelement auf, welches dazu ausgebildet ist, das dritte Element drehfest mit dem Gehäuse des Hybridantriebssystems zu verbinden. Dies bedeutet, dass mittels des dritten Schaltelements das dritte Element drehfest mit dem Gehäuse verbindbar ist. Das dritte Schaltelement ist somit beispielsweise zwischen einem dritten Koppelzustand und einem dritten Entkoppelzustand umschaltbar. Im dem dritten Koppelzustand ist mittels des dritten Schaltelements das dritte Element drehfest mit dem Gehäuse verbunden, sodass zumindest um die erste Planetenradsatzdrehachse erfolgende Relativdrehungen zwischen dem dritten Element und dem Gehäuse unterbunden sind. In dem dritten Entkoppelzustand lässt das dritte Schaltelement insbesondere um die erste Planetenradsatzdrehachse erfolgende Relativdrehungen zwischen dem dritten Element und dem Gehäuse zu. Beispielsweise ist das dritte Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den dritten Koppelzustand bewirkenden, dritten Koppelstellung und wenigstens einer den dritten Entkoppelzustand bewirkenden, dritten Entkoppelstellung bewegbar. Durch Verwendung des dritten Schaltelements können eine besonderes vorteilhafte Schaltbarkeit und somit eine besonders vorteilhafte Mehrgängigkeit des Hybridantriebs realisiert werden, sodass sich ein besonders vorteilhafter Antrieb darstellen lässt. Eine weitere Ausführungsform zeichnet sich durch ein viertes Schaltelement aus, welches dazu ausgebildet ist, die Antriebswelle drehfest mit dem ersten Element zu verbinden. Mit anderen Worten ist es vorzugsweise vorgesehen, dass die Antriebswelle mittels des vierten Schaltelements drehfest mit dem ersten Element verbindbar ist. Beispielsweise ist das vierte Schaltelement zwischen einem vierten Koppelzustand und einem vierten Entkoppelzustand umschaltbar. In dem vierten Koppelzustand ist mittels des vierten Schaltelements die Antriebswelle drehfest mit dem ersten Element verbunden, sodass das erste Element und die Antriebswelle insbesondere um die erste Planetenradsatzdrehachse gemeinsam beziehungsweise gleichzeitig und vorzugsweise relativ zu dem Gehäuse drehen oder drehen können, insbesondere dann, wenn die Antriebswelle das erste Element antreibt. In dem vierten Entkoppelzustand lässt das vierte Schaltelement insbesondere um die erste Planetenradsatzdrehachse erfolgende Relativdrehungen zwischen der Antriebswelle und dem ersten Element zu. Beispielsweise ist somit die Antriebswelle koaxial zu dem ersten Planetenradsatz und/oder zu dem zweiten Planetenradsatz angeordnet. Beispielsweise ist das vierte Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den vierten Koppelzustand bewirkenden, vierten Koppelstellung und wenigstens einer den vierten Entkoppelzustand bewirkenden, vierten Entkoppelstellung bewegbar. In a further, particularly advantageous embodiment of the invention, the hybrid drive system has a third switching element, which is designed to connect the third element to the housing of the hybrid drive system in a rotationally fixed manner. This means that the third element can be connected to the housing in a rotationally fixed manner by means of the third switching element. The third switching element can therefore be switched, for example, between a third coupling state and a third decoupling state. In the third coupling state, the third element is connected to the housing in a rotationally fixed manner by means of the third switching element, so that relative rotations between the third element and the housing are prevented at least about the first planetary gear set rotation axis. In the third decoupling state, the third switching element allows relative rotations between the third element and the housing, in particular about the first planetary gear set rotation axis. For example, the third switching element is movable, in particular translationally and/or relative to the housing, between at least one third coupling position causing the third coupling state and at least one third decoupling position causing the third decoupling state. By using the third switching element, a particularly advantageous switchability and thus a particularly advantageous multiple speed of the hybrid drive can be realized, so that a particularly advantageous drive can be represented. A further embodiment is characterized by a fourth switching element, which is designed to connect the drive shaft to the first element in a rotationally fixed manner. In other words, it is preferably provided that the drive shaft can be connected to the first element in a rotationally fixed manner by means of the fourth switching element. For example, the fourth switching element can be switched between a fourth coupling state and a fourth decoupling state. In the fourth coupling state, the drive shaft is connected to the first element in a rotationally fixed manner by means of the fourth switching element, so that the first element and the drive shaft can rotate or rotate in particular about the first planetary gear set rotation axis together or simultaneously and preferably relative to the housing, in particular when the drive shaft drives the first element. In the fourth decoupling state, the fourth switching element allows relative rotations between the drive shaft and the first element, in particular about the first planetary gear set rotation axis. For example, the drive shaft is thus arranged coaxially with the first planetary gear set and/or with the second planetary gear set. For example, the fourth switching element is movable, in particular translationally and/or relative to the housing, between at least one fourth coupling position causing the fourth coupling state and at least one fourth decoupling position causing the fourth decoupling state.
Um den Bauraumbedarf des Hybridantriebssystems insbesondere in axialer Richtung besonders gering halten zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass das vierte Schaltelement axial überlappend zu der elektrischen Maschine angeordnet ist. In order to be able to keep the installation space requirement of the hybrid drive system particularly low, particularly in the axial direction, it is provided in a further embodiment of the invention that the fourth switching element is arranged axially overlapping the electrical machine.
Insbesondere ist unter dem Merkmal „axial überlappend“ folgendes zu verstehen: Zwei Elemente wie beispielsweise das vierte Schaltelement und die elektrische Maschine, insbesondere der Rotor, sind axial überlappend angeordnet, wenn sie in Bereichen gleicher axialer Koordinaten angeordnet sind. Somit existiert im Hinblick auf zwei axial überlappend angeordnete Elemente zumindest eine radial angeordnete, das heißt in radialer Richtung und somit senkrecht zur jeweiligen Planetenradsatzdrehachse verlaufende Gerade, die sowohl das eine als auch das andere der axial überlappend angeordneten Elemente durchdringt beziehungsweise schneidet. In particular, the feature “axially overlapping” is to be understood as meaning the following: Two elements, such as the fourth switching element and the electrical machine, in particular the rotor, are arranged in an axially overlapping manner if they are arranged in areas of the same axial coordinates. Thus, with regard to two axially overlapping elements, there is at least one radially arranged, that is to say in the radial direction and thus perpendicular to the respective planetary gear set rotation axis, straight line which penetrates or intersects both one and the other of the axially overlapping elements.
Um eine besonders vorteilhafte Mehrgängigkeit und somit eine besonders vorteilhafte Fahrbarkeit und einen besonders vorteilhaften Antrieb realisieren zu können, umfasst das Hybridantriebssystem in einer weiteren Ausgestaltung ein fünftes Schaltelement vorgesehen, welches dazu ausgebildet ist, das sechste Element drehfest mit dem zweiten Eingangszahnrad zu verbinden. Mit anderen Worten ist mittels des fünften Schaltelements das sechste Element drehfest mit dem zweiten Eingangszahnrad verbindbar. Somit ist beispielsweise das fünfte Schaltelement zwischen einem fünften Koppfelzustand und einem fünften Entkoppelzustand umschaltbar. In dem fünften Koppelzustand ist mittels des fünften Schaltelements das sechste Element drehfest mit dem zweiten Eingangszahnrad verbunden, sodass das sechste Element und das zweite Eingangszahnrad gleichzeitig beziehungsweise gemeinsam insbesondere um die zweite Planetenradsatzdrehachse sowie vorzugsweise relativ zu dem Gehäuse drehen oder drehen können, insbesondere dann, wenn das zweite Eingangszahnrad das sechste Element antreibt oder umgekehrt. In dem fünften Entkoppelzustand lässt das fünfte Schaltelement insbesondere um die zweite Planetenradsatzdrehachse erfolgende Relativdrehungen zwischen dem sechsten Element und dem zweiten Eingangszahnrad zu. Somit ist es ferner vorzugsweise vorgesehen, dass das sechste Element und das zweite Eingangszahnrad koaxial zueinander angeordnet sind. Beispielsweise ist das fünfte Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den fünften Koppelzustand bewirkenden, fünften Koppelstellung und wenigstens einer den fünften Entkoppelzustand bewirkenden, fünften Entkoppelstellung bewegbar. In order to be able to realize a particularly advantageous multiple gears and thus a particularly advantageous drivability and a particularly advantageous drive In a further embodiment, the hybrid drive system provides a fifth switching element, which is designed to connect the sixth element to the second input gear in a rotationally fixed manner. In other words, the sixth element can be connected in a rotationally fixed manner to the second input gear by means of the fifth switching element. Thus, for example, the fifth switching element can be switched between a fifth coupling state and a fifth decoupling state. In the fifth coupling state, the sixth element is rotatably connected to the second input gear by means of the fifth switching element, so that the sixth element and the second input gear can rotate or rotate simultaneously or together, in particular about the second planetary gear set rotation axis and preferably relative to the housing, in particular when the second input gear drives the sixth element or vice versa. In the fifth decoupling state, the fifth switching element allows relative rotations between the sixth element and the second input gear, in particular about the second planetary gear set rotation axis. Thus, it is further preferably provided that the sixth element and the second input gear are arranged coaxially to one another. For example, the fifth switching element is movable, in particular translationally and/or relative to the housing, between at least one fifth coupling position causing the fifth coupling state and at least one fifth decoupling position bringing about the fifth decoupling state.
Bei einer weiteren, besonders vorteilhaften Ausführungsform der Erfindung weist das Hybridantriebssystem ein sechstes Schaltelement auf, welches dazu ausgebildet ist, das erste Ausgangszahnrad drehfest mit der Abtriebswelle zu verbinden. Mit anderen Worten ist mittels des sechsten Schaltelements das erste Ausgangszahnrad drehfest mit der Abtriebswelle verbindbar. Hierzu ist beispielsweise das sechste Schaltelement zwischen einem sechsten Entkoppelzustand und einem sechsten Koppelzustand umschaltbar. In dem sechsten Koppelzustand ist mittels des sechsten Schaltelements das erste Ausgangszahnrad drehfest mit der Abtriebswelle verbunden. In dem sechsten Entkoppelzustand lässt das sechste Schaltelement Relativdrehungen zwischen dem ersten Ausgangszahnrad und der Abtriebswelle zu, wobei diese Relativdrehungen beispielsweise um eine Abtriebswellendrehachse erfolgen, um welche die Abtriebswelle insbesondere relativ zu dem Gehäuse drehbar ist. Beispielsweise ist das sechste Schaltelement, insbesondere translatorisch und/oder relativ zu dem Gehäuse, zwischen wenigstens einer den sechsten Koppelzustand bewirkenden, sechsten Koppelstellung und wenigstens einer den sechsten Entkoppelzustand bewirkenden, sechsten Entkoppelstellung bewegbar. Hierdurch können eine besonders vorteilhafte Schaltbarkeit und Mehrgängigkeit des Hybridantriebssystems dargestellt werden. In a further, particularly advantageous embodiment of the invention, the hybrid drive system has a sixth switching element, which is designed to connect the first output gear to the output shaft in a rotationally fixed manner. In other words, the first output gear can be connected to the output shaft in a rotationally fixed manner by means of the sixth switching element. For this purpose, for example, the sixth switching element can be switched between a sixth decoupling state and a sixth coupling state. In the sixth coupling state, the first output gear is connected to the output shaft in a rotationally fixed manner by means of the sixth switching element. In the sixth decoupling state, the sixth switching element allows relative rotations between the first output gear and the output shaft, these relative rotations taking place, for example, about an output shaft rotation axis about which the output shaft is rotatable in particular relative to the housing. For example, the sixth switching element, in particular translationally and/or relative to the housing, is between at least one sixth coupling position causing the sixth coupling state and at least one sixth coupling position bringing about the sixth decoupling state Decoupling position movable. This makes it possible to achieve particularly advantageous switchability and multiple speeds of the hybrid drive system.
Um einen besonders kompakten Aufbau des Hybridantriebssystem realisieren zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass in einer axialen Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet das erste Schaltelement, das zweite Schaltelement, das dritte Schaltelement, das vierte Schaltelement, das fünfte Schalelement und das sechste Schalelement in folgender Reihenfolge nacheinander, das heißt aufeinanderfolgend angeordnet sind: das erste Schaltelement - das vierte Schaltelement - das fünfte Schaltelement - das sechste Schaltelement - das dritte Schaltelement - das zweite Schaltelement. Somit ist vorzugsweise vorgesehen, dass sich in axialer Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet das vierte Schaltelement an das erste Schaltelement, das fünfte Schaltelement an das vierte Schaltelement, das sechste Schaltelement an das fünfte Schaltelement, das dritte Schaltelement an das sechste Schaltelement und das zweite Schaltelement an das dritte Schaltelement anschließt. In order to be able to realize a particularly compact structure of the hybrid drive system, it is provided in a further embodiment of the invention that, viewed in an axial direction and thus along the respective planetary gear set rotation axis, the first switching element, the second switching element, the third switching element, the fourth switching element, the fifth Formwork element and the sixth formwork element are arranged in the following order one after the other, that is to say sequentially: the first switching element - the fourth switching element - the fifth switching element - the sixth switching element - the third switching element - the second switching element. It is therefore preferably provided that, viewed in the axial direction and thus along the respective planetary gear set rotation axis, the fourth switching element is connected to the first switching element, the fifth switching element is connected to the fourth switching element, the sixth switching element is connected to the fifth switching element, the third switching element is connected to the sixth switching element and that second switching element connects to the third switching element.
Um einen besonders kompakten Aufbau des Hybridantriebssystems darstellen zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass in axialer Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet ein Rotorrad der elektrischen Maschine, die erste Stirnradstufe, das erste Teilgetriebe und die zweite Stirnradradstufe in der genannten Reihenfolge, das heißt in folgender Reihenfolge nacheinander angeordnet sind: Das Rotorrad - die erste Stirnradstufe - das erste Teilgetriebe - die zweite Stirnradstufe. Somit ist es vorzugsweise vorgesehen, dass in axialer Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet sich die erste Stirnradstufe an das Rotorrad, das erste Teilgetriebe an die erste Stirnradstufe und die zweite Stirnradstufe an das erste Teilgetriebe anschließt. Insbesondere handelt es sich bei dem Rotorrad um ein siebtes Zahnrad des Hybridantriebssystems, wobei das siebte Zahnrad ein Stirnrad sein kann. Insbesondere ist es denkbar, dass der Rotor mittels des Rotorrads, das heißt über das Rotorrad drehmomentübertragend mit dem ersten Verbindungselement gekoppelt oder koppelbar ist. Insbesondere ist es denkbar, dass der Rotor über das Rotorrad, insbesondere permanent, drehmomentübertragend mit dem ersten Verbindungselement gekoppelt ist. Hierzu ist beispielsweise ein insbesondere als Stirnrad ausgebildetes, achtes Zahnrad drehmomentübertragen, insbesondere drehfest, mit dem ersten Verbindungselement verbindbar oder verbunden. Insbesondere ist es denkbar, dass das achte Zahnrad, insbesondere permanent, drehfest mit dem ersten Verbindungselement verbunden ist. Dabei ist es insbesondere denkbar, dass das achte Zahnrad, insbesondere permanent, mit dem Rotorrad kämmt, mithin, insbesondere permanent, mit dem Rotorrad in Eingriff steht. Somit ist es denkbar, dass das Rotorrad und das achte Zahnrad eine insbesondere zusätzlich zu der ersten Stirnradstufe und zusätzlich zu der zweiten Stirnradstufe vorgesehene, dritte Stirnradstufe bilden. Insbesondere ist es denkbar, dass das achte Zahnrad koaxial zu dem ersten Verbindungselement angeordnet ist, sodass insbesondere dann, wenn das achte Zahnrad nicht drehfest mit dem Gehäuse verbunden ist, das achte Zahnrad um die erste Planetenradsatzdrehachse und/oder die zweite Planetenradsatzdrehachse relativ zu dem Gehäuse drehbar ist. In order to be able to represent a particularly compact structure of the hybrid drive system, it is provided in a further embodiment of the invention that, viewed in the axial direction and thus along the respective planetary gear set rotation axis, a rotor wheel of the electric machine, the first spur gear stage, the first partial transmission and the second spur gear stage in the The order mentioned, that is, are arranged one after the other in the following order: The rotor wheel - the first spur gear stage - the first partial gear - the second spur gear stage. Thus, it is preferably provided that in the axial direction and thus along the respective planetary gear set rotation axis, the first spur gear stage connects to the rotor wheel, the first partial gearbox connects to the first spur gear stage and the second spur gear stage connects to the first partial gearbox. In particular, the rotor wheel is a seventh gear of the hybrid drive system, wherein the seventh gear can be a spur gear. In particular, it is conceivable that the rotor is coupled or can be coupled to the first connecting element by means of the rotor wheel, that is to say via the rotor wheel in a torque-transmitting manner. In particular, it is conceivable that the rotor is coupled to the first connecting element via the rotor wheel, in particular permanently, in a torque-transmitting manner. For this purpose, for example, an eighth gear, designed in particular as a spur gear, is torque-transmitting, in particular non-rotatable, connectable or connected to the first connecting element. In particular, it is conceivable that the eighth gear is connected, in particular permanently, in a rotationally fixed manner to the first connecting element. It is particularly conceivable that the eighth gear meshes, in particular permanently, with the rotor wheel, and is therefore, in particular permanently, in engagement with the rotor wheel. It is therefore conceivable that the rotor wheel and the eighth gear form a third spur gear stage, which is provided in particular in addition to the first spur gear stage and in addition to the second spur gear stage. In particular, it is conceivable that the eighth gear is arranged coaxially to the first connecting element, so that, in particular when the eighth gear is not connected to the housing in a rotationally fixed manner, the eighth gear rotates about the first planetary gear set rotation axis and/or the second planetary gear set rotation axis relative to the housing is rotatable.
Um einen besonders bauraumgünstigen Aufbau des Hybridantriebssystems realisieren zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass die Antriebswelle koaxial zu dem ersten Teilgetriebe und somit koaxial zu dem ersten Planetenradsatz und vorzugsweise auch koaxial zu dem zweiten Planetenradsatz angeordnet ist. Dabei ist das Abtriebszahnrad vorzugsweise axial, das heißt in axialer Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet zwischen dem Vebrennungsmotor und dem ersten Teilgetriebe angeordnet. Mit anderen Worten ist vorzugsweise das Abtriebszahnrad in einer Ebene angeordnet, welche senkrecht zur axialen Richtung und somit senkrecht zur jeweiligen Planetenradsatzdrehachse verläuft, wobei die Ebene in axialer Richtung und somit entlang der jeweiligen Planetenradsatzdrehachse betrachtet zwischen dem Verbrennungsmotor und dem ersten Teilgetriebe angeordnet ist. Um insbesondere in axialer Richtung einen besonders bauraumgünstigen Aufbau des Hybridantriebssystems realisieren zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass das erste Schaltelement axial überlappend zu der elektrischen Maschine, insbesondere zu dem Rotor und/oder zu dem Stator, angeordnet ist. In order to be able to realize a particularly space-saving design of the hybrid drive system, it is provided in a further embodiment of the invention that the drive shaft is arranged coaxially to the first partial transmission and thus coaxially to the first planetary gear set and preferably also coaxially to the second planetary gear set. The output gear is preferably arranged axially, that is to say in the axial direction and thus viewed along the respective planetary gear set rotation axis between the internal combustion engine and the first sub-transmission. In other words, the output gear is preferably arranged in a plane which runs perpendicular to the axial direction and thus perpendicular to the respective planetary gear set rotation axis, the plane being arranged between the internal combustion engine and the first partial transmission when viewed in the axial direction and thus along the respective planetary gear set rotation axis. In order to be able to realize a particularly space-saving design of the hybrid drive system, particularly in the axial direction, it is provided in a further embodiment of the invention that the first switching element is arranged axially overlapping the electrical machine, in particular the rotor and/or the stator.
Ein zweiter Aspekt der Erfindung betrifft ein einfach auch als Fahrzeug bezeichnetes Kraftfahrzeug, welches beispielsweise als Kraftwagen, insbesondere als Personenkraftwagen, ausgebildet sein kann. Das Kraftfahrzeug weist ein Hybridantriebssystem gemäß dem ersten Aspekt der Erfindung auf. Das Kraftfahrzeug ist mittels des Hybridantriebssystems antreibbar. Vorteile und vorteilhafte Ausgestaltungen des ersten Aspekts der Erfindung sind als Vorteile und vorteilhafte Ausgestaltungen des zweiten Aspekts der Erfindung anzusehen und umgekehrt. A second aspect of the invention relates to a motor vehicle, also simply referred to as a vehicle, which can be designed, for example, as a motor vehicle, in particular as a passenger car. The motor vehicle has a hybrid drive system according to the first aspect of the invention. The motor vehicle can be driven by means of the hybrid drive system. Advantages and advantageous refinements of the first aspect of the invention are to be viewed as advantages and advantageous refinements of the second aspect of the invention and vice versa.
Insbesondere ermöglicht die Erfindung eine Ausgestaltung des Hybridantriebssystems beziehungsweise des Getriebes als ein Mehrstufengetriebe insbesondere auf Basis von gekoppelten Planetenradsätzen in Form des ersten Planetenradsatzes und des zweiten Planetenradsatzes, insbesondere in achsparalleler Ausführung. Die Erfindung ermöglicht es dabei insbesondere, die Verlustleistung besonders gering halten zu können. Beispielsweise können bis zu 6 hybridische beziehungsweise Verbrennungsmotorische Vorfährtsgänge und ein hybridischer Rückwärtsgang realisiert werden. Außerdem können beispielsweise wenigstens oder genau zwei elektrische Gänge und diverse stufenlose Fahrbereiche realisiert werden. Außerdem ermöglicht die Erfindung die Realisierung einer besonders großen Spreizung. Vorzugsweise sind die Planetenradsätze als Einfachplanetenradsätze ausgebildet. Mindestens eines der Schaltelemente kann als formschlüssiges Schaltelement, insbesondere als Klauenkupplung, ausgebildet sein, insbesondere mit oder ohne Synchronisiereinheit, wodurch Verluste besonders gering gehalten werden können. Die elektrische Maschine kann koaxial zu den Planetenradsätzen angeordnet sein. Ferner ist eine achsparallele Anordnung der elektrischen Maschine denkbar. Bei der koaxialen Anordnung der elektrischen Maschine fällt die Maschinendrehachse mit der jeweiligen Planetenradsatzdrehachse zusammen. Bei der achsparallelen verläuft die Maschinendrehachse parallel zur jeweiligen Planetenradsatzdrehachse, wobei die Maschinendrehachse von der jeweiligen Planetenradsatzdrehachse beabstandet ist. Weitere formschlüssige Schaltelemente, insbesondere Klauenschaltelemente, sind denkbar, wodurch Verluste besonders gering gehalten werden können. Die Erfindung ermöglicht außerdem die Realisierung vorteilhafter Verzahnungswirkungsgrade. In particular, the invention enables an embodiment of the hybrid drive system or the transmission as a multi-stage transmission, in particular based on coupled planetary gear sets in the form of the first planetary gear set and the second planetary gear set, in particular in an axially parallel design. The invention makes it possible in particular to keep the power loss particularly low. For example, up to 6 hybrid or combustion engine forward gears and one hybrid reverse gear can be implemented. In addition, for example, at least or exactly two electric gears and various continuously variable driving ranges can be implemented. The invention also enables the realization of a particularly large spread. The planetary gear sets are preferably designed as single planetary gear sets. At least one of the switching elements can be designed as a positive switching element, in particular as a claw clutch, in particular with or without a synchronization unit, whereby losses can be kept particularly low. The electric machine can be arranged coaxially with the planetary gear sets. Furthermore, an axially parallel arrangement of the electrical machine is conceivable. When the electric machine is arranged coaxially, the axis of rotation of the machine coincides with the axis of rotation of the respective planetary gear set. In the case of axially parallel, the machine axis of rotation runs parallel to the respective planetary gear set rotation axis, with the machine rotation axis being spaced from the respective planetary gear set rotation axis. Further positive switching elements, in particular claw switching elements, are conceivable, whereby losses can be kept particularly low. The invention also enables the realization of advantageous gearing efficiencies.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombinationen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen. Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing. The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and/or shown in the figures alone can be used not only in the combination specified in each case, but also in other combinations or on their own, without the scope of to abandon invention.
Die Zeichnung zeigt in: The drawing shows in:
Fig. 1 eine schematische Darstellung einer ersten Ausführungsform eines Hybridantriebssystems für ein Kraftfahrzeug; Fig. 2 eine schematische Darstellung einer zweiten Ausführungsform des Hybridantriebssystems; und 1 shows a schematic representation of a first embodiment of a hybrid drive system for a motor vehicle; 2 shows a schematic representation of a second embodiment of the hybrid drive system; and
Fig. 3 eine schematische Darstellung einer dritten Ausführungsform des Hybridantriebssystems. Fig. 3 is a schematic representation of a third embodiment of the hybrid drive system.
In den Figuren sind gleiche oder funktionsgleiche Elemente mit gleichen Bezugszeichen versehen. In the figures, identical or functionally identical elements are provided with the same reference numerals.
Fig. 1 zeigt in einer schematischen Darstellung eine erste Ausführungsform eines Hybridantriebssystems 10 für ein auch als Fahrzeug bezeichnetes Kraftfahrzeug. Das Kraftfahrzeug ist vorzugsweise als Kraftwagen ausgebildet. Das Kraftfahrzeug weist beispielsweise wenigstens oder genau zwei in Fahrzeuglängsrichtung hintereinander angeordnete Fahrzeugachsen auf. Die jeweilige Fahrzeugachse wird auch einfach auch als Achse bezeichnet und weist wenigstens oder genau zwei Fahrzeugräder auf, wobei die Fahrzeugräder Bodenkontaktelemente des Kraftfahrzeugs sind. Das Hybridantriebssystem 10 ist dabei, insbesondere genau, einer der Achsen zugeordnet, sodass mittels des Hybridantriebssystems 10 die Fahrzeugräder der Fahrzeugachse antreibbar sind, der das Hybridantriebssystem 10 zugeordnet ist. Die mittels des Hybridantriebssystems 10 antreibbaren Fahrzeugräder der Fahrzeugachse, der das Hybridantriebssystem 10 zugeordnet ist, sind in Fig. 1 besonders schematisch dargestellt und mit 12 und 14 bezeichnet. Das Hybridantriebssystem 10 weist einen Verbrennungsmotor 16 auf, welcher auch als Verbrennungskraftmaschine, Motor oder Brennkraftmaschine bezeichnet wird. Der Verbrennungsmotor weist ein auch als Motorblock bezeichnetes Zylindergehäuse 18 auf, welches mehrere Zylinder 20 aufweist. In einem befeuerten Betrieb der Verbrennungskraftmaschine laufen in den Zylindern 20 Verbrennungsvorgänge ab. Beispielsweise ist der Verbrennungsmotor 16 als ein Hubkolbenmotor ausgebildet. Der Verbrennungsmotor 16 weist eine beispielsweise als Kurbelwelle ausgebildete Antriebswelle 21 auf, welche um eine Antriebswellendrehachse relativ zu dem Zylindergehäuse 18 drehbar ist. Der Verbrennungsmotor 16 kann über die Antriebswelle 21 erste Antriebsdrehmomente zum Antreiben der Fahrzeugräder 12 und 14 und somit zum Antreiben des Kraftfahrzeugs bereitstellen. Das Hybridantriebssystem 10 umfasst außerdem einen elektrische Maschine 22, welche einen Stator 24 und einen Rotor 26 aufweist. Der Rotor 26 ist mittels des Stators 24 antreibbar und dadurch um eine Maschinendrehachse relativ zu einem Stator 24 drehbar. Das Hybridantriebssystem 10 umfasst außerdem ein in Fig. 1 besonders schematisch dargestelltes Gehäuse 28, wobei die Antriebswelle 21 um die Antriebswellendrehachse und der Rotor 26 um die Maschinendrehachse relativ zu dem Gehäuse 28 drehbar sind. Die elektrische Maschine 22 kann über den Rotor 26 zweite Antriebsdrehmomente zum Antreiben der Fahrzeugräder 12 und 14 und somit zum Antreiben des Kraftfahrzeugs bereitstellen. Das Hybridantriebssystem 10 weist außerdem ein als Differentialgetriebe ausgebildetes und einfach auch als Differential bezeichnetes Achsgetriebe 30 auf, über welches die Fahrzeugräder 12 und 14 von der elektrischen Maschine 22 und von dem Verbrennungsmotor 16 antreibbar sind. Bei der ersten Ausführungsform ist das Achsgetriebe 30 beispielsweise als ein Kegelraddifferential ausgebildet. Das Achsgetriebe 30 weist ein Achsgetriebegehäuse 32 auf, welches vorliegend beispielsweise als ein sogenannter Differentialkorb ausgebildet ist. Außerdem umfasst das Achsgetriebe 30 ein Achsgetriebeeingangsrad 34, welches, insbesondere permanent, drehfest mit dem Achsgetriebegehäuse 32 verbunden ist. Somit sind das Achsgetriebegehäuse 32 und das Achsgetriebeeingangsrad 34 um eine Achsgetriebedrehachse relativ zu dem Gehäuse 28 drehbar. Wie in Fig. 1 durch Pfeile 36 veranschaulicht ist, kann das Achsgetriebe 30 ein jeweiliges, aus dem jeweiligen ersten Antriebsdrehmoment und/oder aus dem jeweiligen, zweiten Antriebsdrehmoment resultierendes, drittes Antriebsdrehmoment, welches auch als drittes Drehmoment bezeichnet wird, auf die Fahrzeugräder 12 und 14 aufteilen beziehungsweise übertragen, wodurch die Fahrzeugräder 12 und 14 antreibbar sind. Das Achsgetriebe 30 weist vorliegend als Kegelräder ausgebildete Ausgleichsräder 38, welche mit dem Achsgetriebegehäuse 32 um die Achsgetriebedrehachse relativ zu dem Gehäuse 28 mitdrehbar sind. Außerdem können sich die Ausgleichsräder 38 um eine insbesondere gemeinsame Ausgleichsraddrehachse drehen, welche senkrecht zur Achsgetriebedrehachse verläuft. Die Ausgleichsräder 38 kämmen, insbesondere permanent, mit Seitenrädern 40 des Achsgetriebes 30. Das jeweilige Ausgleichsrad 38 ist um die Ausgleichsraddrehachse, welche senkrecht zur Achsgetriebedrehachse verläuft, relativ zu dem Achsgetriebegehäuse 32 drehbar. Das jeweilige Seitenrad 40 ist um die Achsgetriebedrehachse relativ zu dem Gehäuse 28 und auch relativ zu dem Achsgetriebegehäuse 32 drehbar. Das jeweilige Seitenrad 40 ist mit einer jeweiligen Seitenwelle 42, insbesondere permanent, drehfest verbunden, wobei das jeweilige Fahrzeugrad 12, 14 von der jeweiligen Seitenwelle 42 antreibbar ist. Insbesondere können die Seitenräder 40 als Kegelräder ausgebildet sein. Die Ausgleichsräder 38 und die Seitenräder 40 sind Zahnräder, welche, insbesondere permanent, miteinander kämmen. Das Hybridantriebssystem 10 umfasst außerdem ein auch als Hauptgetriebe bezeichnetes Getriebe 44, welches ein erstes Teilgetriebe 46 und ein zweites Teilgetriebe 48 aufweist. Das erste Teilgetriebe 46 weist einen ersten Planetenradsatz 50 und einen zweiten Planetenradsatz 52 auf, welche vorliegend koaxial zueinander angeordnet sind. Der erste Planetenradsatz 50 weist ein erstes Element 54 in Form eines ersten Sonnenrades, ein zweites Element 56 in Form eines ersten Planetenträgers, welcher auch als erster Steg bezeichnet wird, und ein drittes Element 58 in Form eines ersten Hohlrades auf. Außerdem weist der erste Planetenradsatz 50 erste Planetenräder 60 auf, welche hier drehbar an dem ersten Planetenträger 56 gelagert sind und gleichzeitig sowohl mit dem ersten Sonnenrad 54 als auch mit dem ersten Hohlrad 58 kämmen. Der zweite Planetenradsatz 52 weist ein viertes Element 62 in Form eines zweiten Sonnenrades, ein fünftes Element 64 in Form eines zweiten Planetenträgers und ein sechstes Element 66 in Form eines zweiten Hohlrades auf. Außerdem weist der zweite Planetenradsatz 52 zweite Planetenräder 68 auf, welche hier drehbar an dem Planetenträger 64 gelagert sind und gleichzeitig sowohl mit dem zweiten Sonnenrad 62 als auch mit dem Hohlrad 66 kämmen. Bei der ersten Ausführungsform ist das erste Sonnenrad das erste Element 54, der erste Planetenträger das zweite Element 56 und das erste Hohlrad das dritte Element 58. Außerdem ist das zweite Sonnenrad das vierte Element 62, der zweite Planetenträger das fünfte Element 64 und das zweite Hohlrad das sechste Element 66. Dabei ist das zweite Element (erster Planetenträger) 56 permanent drehfest mit dem vierten Element (zweites Sonnenrad) 62 verbunden. 1 shows a schematic representation of a first embodiment of a hybrid drive system 10 for a motor vehicle, also referred to as a vehicle. The motor vehicle is preferably designed as a motor vehicle. The motor vehicle has, for example, at least or exactly two vehicle axles arranged one behind the other in the longitudinal direction of the vehicle. The respective vehicle axle is also simply referred to as an axle and has at least or exactly two vehicle wheels, the vehicle wheels being ground contact elements of the motor vehicle. The hybrid drive system 10 is assigned, in particular precisely, to one of the axles, so that the vehicle wheels of the vehicle axle to which the hybrid drive system 10 is assigned can be driven by means of the hybrid drive system 10. The vehicle wheels of the vehicle axle that can be driven by means of the hybrid drive system 10 and to which the hybrid drive system 10 is assigned are shown particularly schematically in FIG. 1 and are designated 12 and 14. The hybrid drive system 10 has an internal combustion engine 16, which is also referred to as an internal combustion engine, motor or internal combustion engine. The internal combustion engine has a cylinder housing 18, also referred to as an engine block, which has a plurality of cylinders 20. When the internal combustion engine is fired, 20 combustion processes take place in the cylinders. For example, the internal combustion engine 16 is designed as a reciprocating piston engine. The internal combustion engine 16 has a drive shaft 21 designed, for example, as a crankshaft, which is rotatable about a drive shaft rotation axis relative to the cylinder housing 18. The internal combustion engine 16 can provide first drive torque via the drive shaft 21 for driving the vehicle wheels 12 and 14 and thus for driving the motor vehicle. The hybrid drive system 10 also includes an electric machine 22, which has a stator 24 and a rotor 26. The rotor 26 can be driven by means of the stator 24 and can therefore be rotated about a machine axis of rotation relative to a stator 24. The hybrid drive system 10 also includes a housing 28, shown particularly schematically in FIG. wherein the drive shaft 21 is rotatable about the drive shaft rotation axis and the rotor 26 is rotatable about the machine rotation axis relative to the housing 28. The electric machine 22 can provide second drive torque via the rotor 26 for driving the vehicle wheels 12 and 14 and thus for driving the motor vehicle. The hybrid drive system 10 also has an axle gear 30 designed as a differential gear and also simply referred to as a differential, via which the vehicle wheels 12 and 14 can be driven by the electric machine 22 and by the internal combustion engine 16. In the first embodiment, the axle gear 30 is designed, for example, as a bevel gear differential. The axle gear 30 has an axle gear housing 32, which in the present case is designed, for example, as a so-called differential cage. In addition, the axle gear 30 includes an axle gear input wheel 34, which is connected, in particular permanently, in a rotationally fixed manner to the axle gear housing 32. Thus, the axle gear housing 32 and the axle gear input gear 34 are rotatable about an axle gear rotation axis relative to the housing 28. As illustrated by arrows 36 in FIG 14 divide or transfer, whereby the vehicle wheels 12 and 14 can be driven. In the present case, the axle gear 30 has compensating gears 38 designed as bevel gears, which can be rotated with the axle gear housing 32 about the axle gear rotation axis relative to the housing 28. In addition, the compensating wheels 38 can rotate about a particular common compensating wheel rotation axis, which runs perpendicular to the axle gear rotation axis. The compensating wheels 38 mesh, in particular permanently, with side wheels 40 of the axle gear 30. The respective compensating wheel 38 is rotatable relative to the axle gear housing 32 about the compensating wheel rotation axis, which runs perpendicular to the axle gear rotation axis. The respective side wheel 40 is rotatable about the axle gear rotation axis relative to the housing 28 and also relative to the axle gear housing 32. The respective side wheel 40 is connected to a respective side shaft 42, in particular permanently, in a rotationally fixed manner, with the respective vehicle wheel 12, 14 being drivable by the respective side shaft 42. In particular, the side gears 40 can be designed as bevel gears. The compensating gears 38 and the side gears 40 are gears which mesh with one another, in particular permanently. The hybrid drive system 10 also includes a transmission 44, also referred to as a main transmission, which has a first sub-transmission 46 and a second sub-transmission 48. The first partial transmission 46 has a first planetary gear set 50 and a second planetary gear set 52, which in the present case are arranged coaxially to one another. The first planetary gear set 50 has a first element 54 in the form of a first sun gear, a second element 56 in the form of a first planet carrier, which is also referred to as a first web, and a third element 58 in the form of a first ring gear. In addition, the first planetary gear set 50 has first planet gears 60, which are rotatably mounted on the first planet carrier 56 and at the same time mesh with both the first sun gear 54 and the first ring gear 58. The second planetary gear set 52 has a fourth element 62 in the form of a second sun gear, a fifth element 64 in the form of a second planet carrier and a sixth element 66 in the form of a second ring gear. In addition, the second planetary gear set 52 has second planet gears 68, which are rotatably mounted on the planet carrier 64 and at the same time mesh with both the second sun gear 62 and the ring gear 66. In the first embodiment, the first sun gear is the first element 54, the first planet carrier is the second element 56 and the first ring gear is the third element 58. In addition, the second sun gear is the fourth element 62, the second planet carrier is the fifth element 64 and the second ring gear the sixth element 66. The second element (first planet carrier) 56 is permanently connected to the fourth element (second sun gear) 62 in a rotationally fixed manner.
Das zweite Teilgetriebe 48 weist eine erste Stirnradstufe 70 auf. Außerdem umfasst das zweite Teilgetriebe 48 eine Abtriebswelle 72, welche insbesondere um eine Abtriebswellendrehachse relativ zu dem Gehäuse 28 drehbar ist. Insbesondere dann, wenn das jeweilige Element nicht drehfest mit dem Gehäuse 28 verbunden ist, ist das jeweilige Element um eine Planetenradsatzdrehachse relativ zu dem Gehäuse 28 drehbar. Die Planetenradsatzdrehachse ist eine den Planetenradsätzen 50 und 52 gemeinsame Planetenradsatzdrehachse, da die Planetenradsätze 50 und 52 koaxial zueinander angeordnet sind. Bei der ersten Ausführungsform ist der Verbrennungsmotor 16 beziehungsweise die Antriebswelle 21 koaxial zu dem Planetenradsätzen 50 und 52 angeordnet, sodass die Antriebswellendrehachse mit der Planetenradsatzdrehachse zusammenfällt. Die Abtriebswelle 72 ist achsparallel zu den Planetenradsätzen 50 und 52 und auch achsparallel zur Antriebswelle 21 angeordnet, sodass die Abtriebswellendrehachse parallel zur Planetenradsatzdrehachse und parallel zur Antriebswellendrehachse verläuft und von der Planetenradsatzdrehachse und von der Antriebswellendrehachse beabstandet ist. Die elektrische Maschine 22, das heißt ihr Rotor 26, ist achsparallel zur Abtriebswelle 72, achsparallel zu dem Planetenradsätzen 50 und 52 und achsparallel zum Verbrennungsmotor 16 angeordnet, sodass die Maschinendrehachse parallel zur Abtriebswellendrehachse, parallel zur Planetenradsatzdrehachse und parallel zur Antriebswellendrehachse verläuft und von der Abtriebswellendrehachse, von der Planetenradsatzdrehachse und von der Antriebswellendrehachse beabstandet ist. Vorliegend verläuft auch die Achsgetriebedrehachse parallel zur Maschinendrehachse, parallel zur Abtriebswellendrehachse, parallel zur Planetenradsatzdrehachse und parallel zur Antriebswellendrehachse und ist von diesen beabstandet, sodass das Achsgetriebe 30 achsparallel zur Abtriebswelle 72, zur elektrischen Maschine 22, zum Verbrennungsmotor 16 beziehungsweise zur Antriebswelle 21 und zu den Planetenradsätzen 50 und 52 angeordnet ist. The second partial transmission 48 has a first spur gear stage 70. In addition, the second partial transmission 48 includes an output shaft 72, which is rotatable in particular about an output shaft rotation axis relative to the housing 28. In particular, if the respective element is not connected to the housing 28 in a rotationally fixed manner, the respective element is rotatable about a planetary gear set rotation axis relative to the housing 28. The planetary gear set rotation axis is a planetary gear set rotation axis common to the planetary gear sets 50 and 52, since the planetary gear sets 50 and 52 are arranged coaxially to one another. In the first embodiment, the internal combustion engine 16 or the drive shaft 21 is arranged coaxially to the planetary gear sets 50 and 52, so that the drive shaft rotation axis coincides with the planetary gear set rotation axis. The output shaft 72 is arranged axially parallel to the planetary gear sets 50 and 52 and also axially parallel to the drive shaft 21, so that the output shaft rotation axis runs parallel to the planetary gear set rotation axis and parallel to the drive shaft rotation axis and is spaced from the planetary gear set rotation axis and from the drive shaft rotation axis. The electric machine 22, that is, you Rotor 26 is arranged axially parallel to the output shaft 72, axially parallel to the planetary gear sets 50 and 52 and axially parallel to the internal combustion engine 16, so that the machine axis of rotation runs parallel to the output shaft axis of rotation, parallel to the planetary gear set rotation axis and parallel to the drive shaft rotation axis and from the output shaft rotation axis, from the planetary gear set rotation axis and from the drive shaft rotation axis is spaced apart. In the present case, the axle gear axis of rotation also runs parallel to the machine axis of rotation, parallel to the output shaft axis of rotation, parallel to the planetary gear set axis of rotation and parallel to the drive shaft axis of rotation and is spaced from these, so that the axle gear 30 is axially parallel to the output shaft 72, to the electric machine 22, to the internal combustion engine 16 or to the drive shaft 21 and to the Planetary gear sets 50 and 52 are arranged.
Die erste Stirnradstufe 70 weist ein erstes Ausgangszahnrad 74 auf, welches koaxial zu der Abtriebswelle 72 angeordnet ist. Bei der ersten Ausführungsform ist das Ausgangszahnrad 74, insbesondere permanent, drehfest mit der Abtriebswelle 72 verbunden. Ferner ist es denkbar, dass das Ausgangszahnrad 74 auf der Abtriebswelle 72 angeordnet ist. Die erste Stirnradstufe 70 umfasst außerdem ein Eingangszahnrad 76, welches, insbesondere permanent, mit dem ersten Ausgangszahnrad 74 kämmt. Bei der ersten Ausführungsform ist das erste Eingangszahnrad 76, insbesondere permanent, drehfest mit dem ersten Element (erstes Sonnenrad 54) verbunden. The first spur gear stage 70 has a first output gear 74, which is arranged coaxially with the output shaft 72. In the first embodiment, the output gear 74 is connected, in particular permanently, to the output shaft 72 in a rotationally fixed manner. Furthermore, it is conceivable that the output gear 74 is arranged on the output shaft 72. The first spur gear stage 70 also includes an input gear 76, which meshes, in particular permanently, with the first output gear 74. In the first embodiment, the first input gear 76 is connected, in particular permanently, in a rotationally fixed manner to the first element (first sun gear 54).
Das zweite Teilgetriebe 48 umfasst außerdem eine zweite Stirnradstufe 86, welche ein zweites Ausgangszahnrad 88 und ein zweites Eingangszahnrad 90 aufweist. Das Ausgangszahnrad 88 ist koaxial zu der Abtriebswelle 72 angeordnet. Bei der ersten Ausführungsform ist das Ausgangszahnrad 88, insbesondere permanent, drehfest mit der Abtriebswelle 72 verbunden. Insbesondere kann das Ausgangszahnrad 88 auf der Abtriebswelle 72 angeordnet sein. Das zweite Eingangszahnrad 90 kämmt permanent mit dem Ausgangszahnrad 88. Das zweite Eingangszahnrad 90 ist drehfest mit dem sechsten Element (Hohlrad 66) verbindbar. The second partial transmission 48 also includes a second spur gear stage 86, which has a second output gear 88 and a second input gear 90. The output gear 88 is arranged coaxially with the output shaft 72. In the first embodiment, the output gear 88 is connected, in particular permanently, to the output shaft 72 in a rotationally fixed manner. In particular, the output gear 88 can be arranged on the output shaft 72. The second input gear 90 permanently meshes with the output gear 88. The second input gear 90 can be connected in a rotationally fixed manner to the sixth element (ring gear 66).
Bei der ersten Ausführungsform ist der Rotor 26 derart permanent mit dem ersten Element (Sonnenrad 54) drehmomentübertragend gekoppelt, dass das jeweilige, von der elektrischen Maschine 22 über Ihren Rotor 26 bereitgestellte oder bereitstellbare, zweite Antriebsdrehmoment oder ein daraus resultierendes Drehmoment an dem ersten Element (Sonnenrad 54), das heißt über das Sonnenrad 54 in das Getriebe 44 eingeleitet werden kann. Das Hybridantriebssystem 10 umfasst außerdem ein Abtriebszahnrad 78, welches permanent drehtest mit der Abtriebswelle 72 verbunden ist. Dabei kämmt das Abtriebszahnrad 78 permanent mit dem Achsgetriebeeingangsrad 34. In the first embodiment, the rotor 26 is permanently torque-transmittingly coupled to the first element (sun gear 54) in such a way that the respective second drive torque provided or able to be provided by the electric machine 22 via its rotor 26 or a torque resulting therefrom is transmitted to the first element ( Sun gear 54), that is, can be introduced into the transmission 44 via the sun gear 54. The hybrid drive system 10 also includes Output gear 78, which is permanently connected to the output shaft 72 in rotation. The output gear 78 permanently meshes with the axle drive input gear 34.
Das Hybridantriebssystem 10 umfasst ein erstes Schaltelement 80, mittels welchem die Antriebswelle 21 des Verbrennungsmotor 16 drehtest mit einem der Elemente verbindbar ist. Das eine, mittels des ersten Schaltelements 80 drehfest mit der Antriebswelle 21 verbindbare Element wird auch als Verbindungselement bezeichnet und ist vorliegend das fünfte Element (zweiter Planetenträger) 64, sodass bei der ersten Ausführungsform mittels des ersten Schaltelements 80 der zweite Planetenträger drehfest mit der Antriebswelle 21 verbindbar ist. Das Hybridantriebssystem 10 umfasst außerdem ein zweites Schaltelement 82, mittels welchem das dritte Element (erstes Hohlrad) 58 drehfest mit dem fünften Element (zweiter Planetenträger) 64 verbindbar ist. The hybrid drive system 10 includes a first switching element 80, by means of which the drive shaft 21 of the internal combustion engine 16 can be rotatably connected to one of the elements. The one element that can be connected in a rotationally fixed manner to the drive shaft 21 by means of the first switching element 80 is also referred to as a connecting element and in the present case is the fifth element (second planet carrier) 64, so that in the first embodiment the second planet carrier is connected in a rotationally fixed manner to the drive shaft 21 by means of the first switching element 80 is connectable. The hybrid drive system 10 also includes a second switching element 82, by means of which the third element (first ring gear) 58 can be connected in a rotationally fixed manner to the fifth element (second planet carrier) 64.
Um nun auf besonders bauraumgünstige Weise einen besonders vorteilhafte Fahrbarkeit realisieren zu können, ist die zweite Stirnradstufe 86 in axialer Richtung betrachtet auf einer von der ersten Stirnradstufe 70 abgewandten Seite S des ersten Teilgetriebes 46, insbesondere des zweiten Planentenradsatzes 52, angeordnet. Mit anderen Worten ist die zweite Stirnradstufe 86 auf der in axialer Richtung des jeweiligen Planetenradsatzes 50, 52 und somit entlang der Planetenradsatzdrehachse betrachtet von der ersten Stirnradstufe 70 abgewandten beziehungsweise wegweisenden Seite S des Teilgetriebes 46, insbesondere des zweiten Planetenradsatzes 52, angeordnet. Es ist erkennbar, dass das Hybridantriebssystem 10 insgesamt genau zwei Planetenradsätze aufweist, nämlich den ersten Planetenradsatz 50 und den zweiten Planentenradsatz 52. In order to be able to realize particularly advantageous drivability in a particularly space-saving manner, the second spur gear stage 86, viewed in the axial direction, is arranged on a side S of the first partial transmission 46, in particular of the second planetary gear set 52, facing away from the first spur gear stage 70. In other words, the second spur gear stage 86 is arranged on the side S of the partial transmission 46, in particular of the second planetary gear set 52, which is facing away or pointing away from the first spur gear stage 70 in the axial direction of the respective planetary gear set 50, 52 and thus along the planetary gear set rotation axis. It can be seen that the hybrid drive system 10 has a total of exactly two planetary gear sets, namely the first planetary gear set 50 and the second planetary gear set 52.
Das Hybridantriebssystem 10 umfasst außerdem ein drittes Schaltelement 84, mittels welchem das dritte Element (erstes Hohlrad) 58 drehfest mit dem Gehäuse 28 verbindbar ist. Des Weiteren umfasst das Hybridantriebssystem 10 ein viertes Schaltelement 92, mittels welchem die Antriebswelle 21 drehfest mit dem ersten Element (erstes Sonnenrad) 54 verbindbar ist. Um insbesondere in axialer Richtung des jeweiligen Planetenradsatzes 50, 52 und somit entlang der Planetenradsatzdrehachse betrachtet den Bauraumbedarf des Hybridantriebssystems 10 besonders geringhalten zu können, ist es vorgesehen, dass das vierte Schaltelement 92 axial überlappend zu der elektrischen Maschine 22 angeordnet ist. The hybrid drive system 10 also includes a third switching element 84, by means of which the third element (first ring gear) 58 can be connected to the housing 28 in a rotationally fixed manner. Furthermore, the hybrid drive system 10 includes a fourth switching element 92, by means of which the drive shaft 21 can be connected in a rotationally fixed manner to the first element (first sun gear) 54. In order to be able to keep the installation space requirement of the hybrid drive system 10 particularly low, particularly in the axial direction of the respective planetary gear set 50, 52 and thus along the planetary gear set rotation axis, it is provided that the fourth switching element 92 is arranged axially overlapping the electric machine 22.
Das Hybridantriebssystem 10 umfasst außerdem ein fünftes Schaltelement 94, mittels welchem das sechste Element (zweites Hohlrad) 66 drehfest mit dem zweiten Eingangszahnrad 90 verbindbar ist. Vorgesehen ist auch ein sechstes Schaltelement 96, mittels welchem das erste Ausgangszahnrad 74 drehtest mit der Abtriebswelle 72 verbindbar ist. Das Ausgangszahnrad 74 ist beispielsweise auf der Abtriebswelle 72 angeordnet. Insbesondere ist das Ausgangszahnrad 74 koaxial zur Abtriebswelle 72 angeordnet. The hybrid drive system 10 also includes a fifth switching element 94, by means of which the sixth element (second ring gear) 66 rotates with the second Input gear 90 can be connected. A sixth switching element 96 is also provided, by means of which the first output gear 74 can be rotatably connected to the output shaft 72. The output gear 74 is arranged on the output shaft 72, for example. In particular, the output gear 74 is arranged coaxially with the output shaft 72.
Bei der ersten Ausführungsform sind die Schaltelemente 80, 82, 84, 92, 94 und 96 in axialer Richtung und somit entlang der Planetenradsatzdrehachse betrachtet in folgender Reihenfolge aufeinanderfolgend, das heißt nacheinander angeordnet: Das erste Schaltelement 80 - das vierte Schaltelement 92 - das sechste Schaltelement 96 - das dritte Schaltelement 84 - das zweite Schaltelement 82 - das fünfte Schaltelement 94. In the first embodiment, the switching elements 80, 82, 84, 92, 94 and 96 are in the axial direction and thus viewed along the planetary gear set rotation axis in the following order, that is, arranged one after the other: The first switching element 80 - the fourth switching element 92 - the sixth switching element 96 - the third switching element 84 - the second switching element 82 - the fifth switching element 94.
Grundsätzlich ist es denkbar, dass zumindest eines der Schaltelemente 80, 82, 84, 92, 94 und 96 als ein formschlüssiges Schaltelement, insbesondere als eine Klauenkupplung, ausgebildet ist. Bei der ersten Ausführungsform sind die Schaltelemente 80, 82, 84, 92, 94 und 96 als reibschlüssige Schaltelemente, insbesondere als Reibkupplung und ganz insbesondere als Lamellenkupplung, ausgebildet. In principle, it is conceivable that at least one of the switching elements 80, 82, 84, 92, 94 and 96 is designed as a positive switching element, in particular as a claw clutch. In the first embodiment, the switching elements 80, 82, 84, 92, 94 and 96 are designed as frictional switching elements, in particular as a friction clutch and in particular as a multi-plate clutch.
Bei der in den Figuren nicht gezeigten Ausführungsform kann beispielsweise das Schaltelement 92 als ein formschlüssiges Schaltelement, insbesondere als eine Klauenkupplung, ausgebildet sein, insbesondere während die anderen Schaltelemente 80, 82, 84, 92, 94 und 96 als reibschlüssige Schaltelemente ausgebildet sein können. In the embodiment not shown in the figures, for example, the switching element 92 can be designed as a positive switching element, in particular as a claw clutch, in particular while the other switching elements 80, 82, 84, 92, 94 and 96 can be designed as frictional switching elements.
Fig. 2 zeigt eine zweite Ausführungsform des Hybridantriebssystems 10. Bei der zweiten Ausführungsform sind die Schaltelemente 80, 82, 84, 92, 94 und 96 in axialer Richtung und somit entlang der Planetenradsatzdrehachse betrachtet in folgender Reihenfolge nacheinander, das heißt aufeinanderfolgend angeordnet: Das vierte Schaltelement 92 - das erste Schaltelement 80 - das fünfte Schaltelement 94 - das zweite Schaltelement 82 - das dritte Schaltelement 84 - das sechste Schaltelement 96. Während bei der ersten Ausführungsform die elektrische Maschine 22 und der Verbrennungsmotor 16 auf derselben, in axialer Richtung von dem zweiten Planentenradsatz 52 abgewandten Seite des ersten Planetenradsatzes 50 angeordnet sind, ist es bei der zweiten Ausführungsform vorgesehen, dass die Plantenradsätze 50 und 52 in axialer Richtung zwischen dem Verbrennungsmotor 16 und der elektrischen Maschine 22 angeordnet sind, sodass der Verbrennungsmotor 16 in axialer Richtung betrachtet auf einer Seite des Teilgetriebes 46 und die elektrische Maschine 22 auf eine in axialer Richtung von der ersten Seite abgewandten, zweiten Seite des Teilgetriebes 46 angeordnet sind. Fig. 2 shows a second embodiment of the hybrid drive system 10. In the second embodiment, the switching elements 80, 82, 84, 92, 94 and 96, viewed in the axial direction and thus along the planetary gear set rotation axis, are arranged one after the other, that is to say sequentially: The fourth Switching element 92 - the first switching element 80 - the fifth switching element 94 - the second switching element 82 - the third switching element 84 - the sixth switching element 96. While in the first embodiment the electric machine 22 and the internal combustion engine 16 are on the same, in the axial direction of the second Planetary gear set 52 are arranged on the side of the first planetary gear set 50 facing away from it, it is provided in the second embodiment that the planetary gear sets 50 and 52 are arranged in the axial direction between the internal combustion engine 16 and the electric machine 22, so that the internal combustion engine 16 viewed in the axial direction is on one Page of the partial transmission 46 and the electric machine 22 are arranged on a second side of the partial transmission 46 facing away from the first side in the axial direction.
Bei der ersten Ausführungsform weist der Rotor 26 ein als Rotorrad 98 bezeichnetes Zahnrad auf, welches, insbesondere permanent, mit einem korrespondierenden, weiteren Zahnrad 100 kämmt. Das Zahnrad 100 ist drehmomentübertragend, insbesondere drehfest, mit dem ersten Element (erstes Sonnenrad) 54 verbindbar oder verbunden. Bei der ersten Ausführungsform ist das Zahnrad 100, insbesondere permanent, drehfest mit dem ersten Element 54 verbunden. In the first embodiment, the rotor 26 has a gear wheel referred to as a rotor wheel 98, which meshes, in particular permanently, with a corresponding, further gear wheel 100. The gear 100 can be connected or connected to the first element (first sun gear) 54 in a torque-transmitting manner, in particular in a rotationally fixed manner. In the first embodiment, the gear 100 is connected, in particular permanently, to the first element 54 in a rotationally fixed manner.
In axialer Richtung und somit entlang der Planetenradsatzdrehachse betrachtet sind, bei der ersten Ausführungsform, das Rotorrad 98, die erste Stirnradstufe 70, das erste Teilgetriebe 46 und die zweite Stirnradstufe 86 in folgender Reihenfolge nacheinander angeordnet: Das Rotorrad 98 - die erste Stirnradstufe 70 - das erste Teilgetriebe 46 - die zweite Stirnradstufe 86. Dies ist auch bei der in Fig. 2 gezeigten, zweiten Ausführungsform der Fall. Viewed in the axial direction and thus along the planetary gear set rotation axis, in the first embodiment, the rotor wheel 98, the first spur gear stage 70, the first partial gear 46 and the second spur gear stage 86 are arranged one after the other in the following order: The rotor wheel 98 - the first spur gear stage 70 - that first partial gear 46 - the second spur gear stage 86. This is also the case in the second embodiment shown in FIG.
Schließlich zeigt Fig. 3 eine dritte Ausführungsform des Hybridantriebssystems 10. Bei der dritten Ausführungsform sind wie bei der ersten Ausführungsform der Verbrennungsmotor 16 und die elektrische Maschine 22 auf derselben Seite des Teilgetriebes 46 angeordnet. Finally, FIG. 3 shows a third embodiment of the hybrid drive system 10. In the third embodiment, as in the first embodiment, the internal combustion engine 16 and the electric machine 22 are arranged on the same side of the partial transmission 46.
Bei der dritten Ausführungsform ist mittels des ersten Schaltelements 80 die Antriebswelle 21 drehfest mit dem ersten Sonnenrad 54 (erstes Element) verbindbar, sodass das Verbindungselement bei der dritten Ausführungsform das erste Sonnenrad (erstes Element 54) ist. Mittels des zweiten Schaltelements 82 sind das erste Hohlrad (drittes Element 58) und der zweite Planetenträger (fünftes Element 64) drehfest miteinander verbindbar. Mittels des dritten Schaltelements 84 ist das erste Hohlrad (drittes Element 58) drehfest mit dem Gehäuse 28 verbindbar. Mittels des vierten Schaltelements 92 sind bei der dritten Ausführungsform das erste Sonnenrad (erstes Element 54) und der zweite Planetenträger (fünftes Element 64) drehfest miteinander verbindbar. Insbesondere kann somit beispielsweise der zweite Planetenträger (fünftes Element 64) mittels des vierten Schaltelements 92 und mittels des ersten Schaltelements 80 drehmomentübertragend, insbesondere drehfest, mit der Antriebswelle 21 verbunden werden. Mittels des fünften Schaltelements 94 ist bei der dritten Ausführungsform das erste Hohlrad (drittes Element 58) drehfest mit dem ersten Eingangszahnrad 76 verbindbar. Des Weiteren ist mittels des sechsten Schaltelements 96 das erste Ausgangszahnrad 74 drehfest mit der Abtriebswelle 72 verbindbar. Bei der dritten Ausführungsform sind die Schaltelemente 80, 82, 84, 92, 94 und 96 in axialer Richtung und somit entlang der Planetenradsatzdrehachse betrachtet in folgender Reihenfolge nacheinander angeordnet: Das erste Schaltelement 80 - das vierte Schaltelement 92 - das fünfte Schaltelement 94 - das sechste Schaltelement 96 - das dritte Schaltelement 84 - das zweite Schaltelement 82. In the third embodiment, the drive shaft 21 can be connected in a rotationally fixed manner to the first sun gear 54 (first element) by means of the first switching element 80, so that the connecting element in the third embodiment is the first sun gear (first element 54). By means of the second switching element 82, the first ring gear (third element 58) and the second planet carrier (fifth element 64) can be connected to one another in a rotationally fixed manner. By means of the third switching element 84, the first ring gear (third element 58) can be connected to the housing 28 in a rotationally fixed manner. In the third embodiment, the first sun gear (first element 54) and the second planet carrier (fifth element 64) can be connected to one another in a rotationally fixed manner by means of the fourth switching element 92. In particular, for example, the second planet carrier (fifth element 64) can be connected to the drive shaft 21 in a torque-transmitting manner, in particular in a rotationally fixed manner, by means of the fourth switching element 92 and by means of the first switching element 80. In the third embodiment, the first ring gear (third element 58) can be connected to the first input gear 76 in a rotationally fixed manner by means of the fifth switching element 94. Furthermore, the sixth switching element 96 is the first Output gear 74 can be connected to the output shaft 72 in a rotationally fixed manner. In the third embodiment, the switching elements 80, 82, 84, 92, 94 and 96 are arranged one after the other in the axial direction and thus viewed along the planetary gear set rotation axis in the following order: the first switching element 80 - the fourth switching element 92 - the fifth switching element 94 - the sixth Switching element 96 - the third switching element 84 - the second switching element 82.
Bezugszeichenliste Reference symbol list
10 Hybridantriebssystem10 hybrid drive system
12 Fahrzeugrad 12 vehicle wheel
14 Fahrzeugrad 14 vehicle wheel
16 Verbrennungsmotor 16 internal combustion engine
18 Zylindergehäuse 18 cylinder housings
20 Zylinder 20 cylinders
21 Antriebswelle 21 drive shaft
22 elektrische Maschine22 electric machine
24 Stator 24 stator
26 Rotor 26 rotors
28 Gehäuse 28 cases
30 Achsgetriebe 30 axle gears
32 Achsgetriebegehäuse32 axle gear housing
34 Achsgetriebeeingangsrad34 axle gear input gear
36 Pfeil 36 arrow
38 Ausgleichsrad 38 balance wheel
40 Seitenrad 40 side wheel
42 Seitenwelle 42 side shaft
44 Getriebe 44 gears
46 erstes Teilgetriebe 46 first partial transmission
48 zweites Teilgetriebe 48 second partial transmission
50 erster Planetenradsatz50 first planetary gear set
52 zweiter Planetenradsatz52 second planetary gear set
54 erstes Element 54 first element
56 zweites Element 56 second element
58 drittes Element 58 third element
60 erstes Planetenrad 60 first planetary gear
62 viertes Element 62 fourth element
64 fünftes Element 64 fifth element
66 sechstes Element 66 sixth element
68 zweites Planetenrad68 second planetary gear
70 erste Stirnradstufe 70 first spur gear stage
72 Abtriebswelle erstes Ausgangszahnrad erstes Eingangszahnrad Abtriebszahnrad erstes Schaltelement zweites Schaltelement drittes Schaltelement zweite Stirnradstufe zweites Ausgangszahnrad zweites Eingangszahnrad viertes Schaltelement fünftes Schaltelement sechstes Schaltelement Rotorrad weiteres Zahnrad 72 output shaft first output gear first input gear output gear first switching element second switching element third switching element second spur gear stage second output gear second input gear fourth switching element fifth switching element sixth switching element rotor wheel further gear

Claims

Patentansprüche Hybridantriebssystem (10) für ein Kraftfahrzeug, mit: Claims Hybrid drive system (10) for a motor vehicle, with:
- einem Verbrennungsmotor (16), welcher eine Antriebswelle (21) aufweist, über welche von dem Verbrennungsmotor (16) erste Antriebsdrehmomente zum Antreiben des Kraftfahrzeugs bereitstellbar sind, - an internal combustion engine (16), which has a drive shaft (21), via which first drive torques for driving the motor vehicle can be provided by the internal combustion engine (16),
- einer elektrischen Maschine (22), welche einen Rotor (26) aufweist, über welchen von der elektrischen Maschine (22) zweite Antriebsdrehmomente zum Antreiben des Kraftfahrzeugs bereitstellbar sind, - an electric machine (22), which has a rotor (26), via which second drive torques for driving the motor vehicle can be provided by the electric machine (22),
- einem Achsgetriebe (30), welches ein Achsgetriebeeingangsrad (34) aufweist, über welches das Achsgetriebe (30) antreibbar ist, - an axle gear (30), which has an axle gear input wheel (34) via which the axle gear (30) can be driven,
- einem Getriebe (44), welches ein erstes Teilgetriebe (46) und ein zweites Teilgetriebe (48) aufweist, wobei: o das erste Teilgetriebe (46) einen ersten Planetenradsatz (50) mit einem ersten Element (54), einem zweiten Element (56) und einem dritten Element (58) sowie einen zweiten Planetenradsatz (52) mit einem permanent drehfest mit dem zweiten Element (56) verbundenen, vierten Element (62), einem fünften Element (64) und einem sechsten Element (66) aufweist, o das zweite Teilgetriebe (48) eine erste Stirnradstufe (70), eine zweite Stirnradstufe (86) sowie eine Abtriebswelle (72) aufweist, o die erste Stirnradstufe (70) ein erstes Ausgangszahnrad (74) aufweist, welches koaxial zu der Abtriebswelle (72) angeordnet ist und mit einem drehfest mit dem zweiten Element (56) verbundenen oder verbindbaren ersten Eingangszahnrad (76) kämmt, o die zweite Stirnradstufe (86) ein zweites Ausgangszahnrad (88) aufweist, welches koaxial zu der Abtriebswelle (72) angeordnet ist und mit einem drehfest mit dem sechsten Element (66) verbundenen oder verbindbaren zweiten Eingangszahnrad (90) kämmt, und o der Rotor (26) der elektrischen Maschine (22) derart mit einem der Elemente (54, 56, 58, 62, 64, 66) drehmomentübertragend gekoppelt oder koppelbar ist, dass das jeweilige, von der elektrischen Maschine (22) über den Rotor (26) bereitgestellte, zweite Antriebsdrehmoment an dem einen, drehmomentübertragend mit dem Rotor (36) gekoppelten oder koppelbaren Element (54, 56, 58, 62, 64, 66) in das Getriebe (44) einleitbar ist, - a transmission (44), which has a first partial transmission (46) and a second partial transmission (48), wherein: o the first partial transmission (46) has a first planetary gear set (50) with a first element (54), a second element ( 56) and a third element (58) and a second planetary gear set (52) with a fourth element (62), a fifth element (64) and a sixth element (66) permanently connected to the second element (56) in a rotationally fixed manner, o the second partial transmission (48) has a first spur gear stage (70), a second spur gear stage (86) and an output shaft (72), o the first spur gear stage (70) has a first output gear (74), which is coaxial with the output shaft (72 ) is arranged and meshes with a first input gear (76) which is non-rotatably connected or connectable to the second element (56), o the second spur gear stage (86) has a second output gear (88) which is arranged coaxially to the output shaft (72) and meshes with a second input gear (90) which is non-rotatably connected or connectable to the sixth element (66), and o the rotor (26) of the electrical machine (22) is coupled or can be coupled to one of the elements (54, 56, 58, 62, 64, 66) in a torque-transmitting manner in such a way that the respective one is transmitted from the electrical machine (22) via the rotor (26) provided, second drive torque can be introduced into the transmission (44) on the one element (54, 56, 58, 62, 64, 66) that is coupled or can be coupled to the rotor (36) in a torque-transmitting manner,
- einem Abtriebszahnrad (78), welches permanent drehtest mit der Abtriebswelle (72) verbunden ist und permanent mit dem Achsgetriebeeingangsrad (34) des Achsgetriebes (30) kämmt, - an output gear (78), which is permanently connected to the output shaft (72) and permanently meshes with the axle gear input gear (34) of the axle gear (30),
- einem ersten Schaltelement (80), welches dazu ausgebildet ist, die Antriebswelle (21) des Verbrennungsmotors (16) drehtest mit einem der Elemente (54, 56, 58, 62, 64, 66) zu verbinden, und - a first switching element (80), which is designed to rotate the drive shaft (21) of the internal combustion engine (16) with one of the elements (54, 56, 58, 62, 64, 66), and
- einem zweiten Schaltelement (82) vorgesehen ist, welches dazu ausgebildet ist, das dritte Element (58) drehtest mit dem fünften Element (64) zu verbinden, dadurch gekennzeichnet, dass die zweite Stirnradstufe (86) in axialer Richtung betrachtet auf einer von der ersten Stirnradstufe (70) abgewandten Seite des ersten Teilgetriebes (46) angeordnet ist. Hybridantriebssystem (10) nach Anspruch 1 , dadurch gekennzeichnet, dass das erste Schaltelement (80) dazu ausgebildet, die Antriebswelle (21) drehfest mit dem fünften Element (64) zu verbinden. Hybridantriebssystem (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Rotor (26) der elektrischen Maschine (22) derart permanent mit dem ersten Element (54) gekoppelt ist, dass das jeweilige, von der elektrischen Maschine (22) über den Rotor (26) bereitgestellte, zweite Antriebsdrehmoment an dem ersten Element (54) in das Getriebe (44) einleitbar ist. Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass insgesamt genau zwei Planetenradsätze (50, 52) vorgesehen sind, nämlich der erste Planetenradsatz (50) und der zweite Planetenradsatz (52). Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, gekennzeichnet durch ein drittes Schaltelement (84), welches dazu ausgebildet ist, das dritte Element (58) drehtest mit einem Gehäuse (28) des Hybridantriebssystems (10) zu verbinden. Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, gekennzeichnet durch ein viertes Schaltelement (92), welches dazu ausgebildet ist, die Antriebswelle (21) drehtest mit dem ersten Element (54) zu verbinden. Hybridantriebssystem (10) nach Anspruch 6, dadurch gekennzeichnet, dass das vierte Schaltelement (92) axial überlappend zu der elektrischen Maschine (22) angeordnet ist. Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, gekennzeichnet durch ein fünftes Schaltelement (94), welches dazu ausgebildet ist, das sechste Element (66) drehfest mit dem zweiten Eingangszahnrad (90) zu verbinden. Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, gekennzeichnet durch ein sechstes Schaltelement (96), welches dazu ausgebildet ist, das erste Ausgangszahnrad (74) drehfest mit der Abtriebswelle (72) zu verbinden. Hybridantriebssystem (10) nach den Ansprüchen 5, 6, 7, 8 und 9 oder nach den Ansprüchen 5, 6, 8 und 9, dadurch gekennzeichnet, dass in einer axialen Richtung betrachtet das erste Schaltelement (80), das zweite Schaltelement (82), das dritte Schaltelement (84), das vierte Schaltelement (92), das fünfte Schaltelement (94) und das sechste Schaltelement (96) in folgender Reihenfolge nacheinander angeordnet sind: das erste Schaltelement (80) - das vierte Schaltelement (92) - das fünfte Schaltelement (94) - das sechste Schaltelement (96) - das dritte Schaltelement (84) - das zweite Schaltelement (82). Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in einer axialen Richtung betrachtet ein Rotorrad (98) der elektrischen Maschine (22), die erste Stirnradstufe (70), das erste Teilgetriebe (46) und die zweite Stirnradstufe (86) in folgender Reihenfolge nacheinander angeordnet sind: das Rotorrad (98) - die erste Stirnradstufe (70) - das erste Teilgetriebe (46) - die zweite Stirnradstufe (86). Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle (21) koaxial zu dem ersten Teilgetriebe (46) angeordnet ist, wobei das Abtriebszahnrad (78) axial zwischen dem Verbrennungsmotor (16) und dem ersten Teilgetriebe (46) angeordnet ist. Hybridantriebssystem (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Schaltelement (80) axial überlappend zu der elektrischen Maschine (22) angeordnet ist. Kraftfahrzeug, mit einem Hybridantriebssystem nach einem der vorhergehenden Ansprüche. - a second switching element (82) is provided, which is designed to rotate the third element (58) with the fifth element (64), characterized in that the second spur gear stage (86) viewed in the axial direction on one of the The first spur gear stage (70) is arranged on the side of the first partial transmission (46) facing away from the first spur gear stage (70). Hybrid drive system (10) according to claim 1, characterized in that the first switching element (80) is designed to connect the drive shaft (21) to the fifth element (64) in a rotationally fixed manner. Hybrid drive system (10) according to claim 1 or 2, characterized in that the rotor (26) of the electric machine (22) is permanently coupled to the first element (54) in such a way that the respective one from the electric machine (22) via the Rotor (26), second drive torque provided on the first element (54) can be introduced into the transmission (44). Hybrid drive system (10) according to one of the preceding claims, characterized in that a total of exactly two planetary gear sets (50, 52) are provided, namely the first planetary gear set (50) and the second planetary gear set (52). Hybrid drive system (10) according to one of the preceding claims, characterized by a third switching element (84), which is designed to rotationally connect the third element (58) to a housing (28) of the hybrid drive system (10). Hybrid drive system (10) according to one of the preceding claims, characterized by a fourth switching element (92), which is designed to rotationally connect the drive shaft (21) to the first element (54). Hybrid drive system (10) according to claim 6, characterized in that the fourth switching element (92) is arranged axially overlapping the electric machine (22). Hybrid drive system (10) according to one of the preceding claims, characterized by a fifth switching element (94), which is designed to connect the sixth element (66) to the second input gear (90) in a rotationally fixed manner. Hybrid drive system (10) according to one of the preceding claims, characterized by a sixth switching element (96), which is designed to connect the first output gear (74) to the output shaft (72) in a rotationally fixed manner. Hybrid drive system (10) according to claims 5, 6, 7, 8 and 9 or according to claims 5, 6, 8 and 9, characterized in that, viewed in an axial direction, the first switching element (80), the second switching element (82) , the third switching element (84), the fourth switching element (92), the fifth switching element (94) and the sixth switching element (96) are arranged one after the other in the following order: the first switching element (80) - the fourth switching element (92) - the fifth switching element (94) - the sixth Switching element (96) - the third switching element (84) - the second switching element (82). Hybrid drive system (10) according to one of the preceding claims, characterized in that, viewed in an axial direction, a rotor wheel (98) of the electric machine (22), the first spur gear stage (70), the first partial gear (46) and the second spur gear stage (86 ) are arranged one after the other in the following order: the rotor wheel (98) - the first spur gear stage (70) - the first partial gear (46) - the second spur gear stage (86). Hybrid drive system (10) according to one of the preceding claims, characterized in that the drive shaft (21) is arranged coaxially to the first partial transmission (46), the output gear (78) being axially between the internal combustion engine (16) and the first partial transmission (46). is arranged. Hybrid drive system (10) according to one of the preceding claims, characterized in that the first switching element (80) is arranged axially overlapping the electric machine (22). Motor vehicle, with a hybrid drive system according to one of the preceding claims.
PCT/EP2023/057672 2022-04-04 2023-03-24 Hybrid drive system for a motor vehicle, and motor vehicle, in particular automobile WO2023194123A1 (en)

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DE102017006082A1 (en) 2017-06-28 2019-01-03 Daimler Ag Hybrid drive device, in particular with a wheelset structure for a dedicated hybrid transmission
DE102018005372A1 (en) 2018-07-06 2019-02-28 Daimler Ag Drive device for a motor vehicle, in particular for a hybrid or electric vehicle
DE102017222537A1 (en) * 2017-12-12 2019-06-13 Volkswagen Aktiengesellschaft Drive arrangement for a hybrid vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150283894A1 (en) 2010-06-22 2015-10-08 Oshkosh Corporation Electromechanical variable transmission
DE102015223026A1 (en) * 2015-11-23 2017-05-24 Avl List Gmbh A torque transmission device and method of operating a torque transmitting device
DE102017204970B3 (en) * 2017-03-24 2018-08-23 Bayerische Motoren Werke Aktiengesellschaft Combined multi-stage hybrid transmission
DE102017006082A1 (en) 2017-06-28 2019-01-03 Daimler Ag Hybrid drive device, in particular with a wheelset structure for a dedicated hybrid transmission
DE102017222537A1 (en) * 2017-12-12 2019-06-13 Volkswagen Aktiengesellschaft Drive arrangement for a hybrid vehicle
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