WO2023000144A1 - 电动汽车驱动系统和电动汽车 - Google Patents

电动汽车驱动系统和电动汽车 Download PDF

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Publication number
WO2023000144A1
WO2023000144A1 PCT/CN2021/107181 CN2021107181W WO2023000144A1 WO 2023000144 A1 WO2023000144 A1 WO 2023000144A1 CN 2021107181 W CN2021107181 W CN 2021107181W WO 2023000144 A1 WO2023000144 A1 WO 2023000144A1
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WO
WIPO (PCT)
Prior art keywords
transmission
generator
engine
clutch
electric vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/107181
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English (en)
French (fr)
Inventor
程洋
曹毅
卫镜周
马文武
钟虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
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 Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Priority to EP21950410.7A priority Critical patent/EP4364989B1/en
Priority to PCT/CN2021/107181 priority patent/WO2023000144A1/zh
Priority to CN202180008020.1A priority patent/CN115003531B/zh
Publication of WO2023000144A1 publication Critical patent/WO2023000144A1/zh
Priority to US18/415,479 priority patent/US20240149859A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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 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 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 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
    • 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • 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 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 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 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
    • 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
    • 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 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 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 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/442—Series-parallel switching type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • 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 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 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
    • 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 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
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4808—Electric machine connected or connectable to gearbox output shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the present application relates to the technical field of automobiles, in particular to an electric vehicle drive system and the electric vehicle.
  • the types of electric vehicles mainly include two types, mainly including battery-driven electric vehicles and electric vehicles driven by a combination of batteries and fuel.
  • the engine drives the generator to generate electricity, and it is widely used to provide electricity for the battery.
  • the generator can only be used for power generation. Therefore, the extended-range hybrid solution needs to be in the original On the driving system, a separate generator is configured, and the newly added generator will occupy part of the car space, reduce the available space for passengers, and increase the cost of electric vehicles at the same time.
  • the present application provides an electric vehicle driving system and an electric vehicle, which are used to reduce the driving cost of the electric vehicle, increase the space of the electric vehicle, realize the four-wheel drive mode of the electric vehicle, and improve the performance of the electric vehicle.
  • an embodiment of the present application provides an electric vehicle drive system, which includes: a first powertrain, a second powertrain, a first transmission system, a second transmission system and a battery system.
  • the first power assembly is connected with the first transmission system, and the first transmission system is used for transmission connection to the first side wheel of the electric vehicle;
  • the second power assembly is connected with the second transmission system, and the second transmission system is used for transmission connection
  • the first powertrain includes a generator and an engine, the engine is used to drive the generator to generate electric energy, or drive the first side wheel through the first transmission system;
  • the generator is used to drive through the first transmission system The wheels on the first side, or output the generated electric energy to the battery system;
  • the second powertrain is used to drive the second side wheels connected through the second transmission system;
  • the battery system is connected to the generator and the second powertrain, It is used to receive the electric energy output by the generator, and output the stored electric energy to the second power assembly and/or the generator.
  • first side and the second side one side is the front side, and the other side is the rear side. That is, the first transmission system is used to drive the front wheels of the electric vehicle, and the second transmission system is used to drive the rear wheels of the electric vehicle; or, the first transmission system is used to drive the rear wheels of the electric vehicle, and the second transmission system is used to drive the rear wheels of the electric vehicle. Used to drive the front wheels of electric vehicles.
  • the electric vehicle drive system provided by this application includes two powertrains, and the two powertrains are respectively connected to a transmission system.
  • the battery system can simultaneously provide The generator and the second powertrain transmit electric energy, so that the generator acts as a motor to drive the first side wheel through the first transmission system.
  • the engine can be used The direct drive provides power for the electric vehicle, and the engine can also be used to drive the generator to generate electricity to charge the battery system, so that the remaining power of the battery system can meet the power demand of the electric vehicle.
  • the generator in the first powertrain can be used as a generator to provide electric energy for the battery system, and can also be used as a motor to drive the wheels through the first transmission system, reducing the number of components in the electric vehicle drive system The quantity and the occupied volume of the electric vehicle drive system are reduced, the operating efficiency of the vehicle drive system is improved, and the structure is simplified.
  • the first power assembly further includes a connection assembly.
  • the engine is connected to the generator through a connecting assembly; the engine is connected to the first transmission system through a connecting assembly; the generator is connected to the first transmission system through a connecting assembly.
  • connection assembly includes: a first transmission, a second transmission, a first clutch, and a second clutch.
  • the input shaft of the first transmission is connected with the engine through the first clutch, the output shaft of the first transmission is connected with the generator; the input shaft of the second transmission is connected with the generator through the second clutch, and the output shaft of the second transmission is connected with the first A transmission system is connected.
  • the separation or engagement between the two components can be realized by controlling the clutch.
  • connection assembly includes: a first transmission, a first clutch and a second clutch.
  • the generator is connected with the engine through the first clutch; the input shaft of the first transmission is connected with the generator through the second clutch, and the output shaft of the first transmission is connected with the first transmission system.
  • the generator when the first clutch is engaged, the generator is connected to the motor, the engine can drive the generator to generate electric energy, and the generator outputs the generated electric energy to the battery system; when the second clutch is engaged, the generator is connected to the first transmission system Connected, the generator can drive the first side wheel through the first transmission system; when the first clutch and the second clutch are combined, the engine is connected with the first transmission system, and the engine can drive the first side wheel through the first transmission system.
  • connection assembly includes: a first transmission, a second transmission, and a first clutch.
  • the input shaft of the first transmission is connected to the engine through the first clutch, the output shaft of the first transmission is connected to the generator; the input shaft of the second transmission is connected to the generator, and the output shaft of the second transmission is connected to the first transmission system ; Synchronizers are included in the second transmission.
  • the engine when the first clutch is engaged, the engine is connected to the generator, the engine can drive the generator to generate electric energy, and the generator outputs the generated electric energy to the battery system; when the synchronizer connects the generator to the first transmission system, the generator The engine can drive the first side wheel through the first transmission system; when the first clutch is engaged and the synchronizer connects the generator with the first transmission system, the engine can be connected with the first transmission system and drive the second side wheel through the first transmission system.
  • One side wheel when the first clutch is engaged, the engine is connected to the generator, the engine can drive the generator to generate electric energy, and the generator outputs the generated electric energy to the battery system; when the synchronizer connects the generator to the first transmission system, the generator The engine can drive the first side wheel through the first transmission system; when the first clutch is engaged and the synchronizer connects the generator with the first transmission system, the engine can be connected with the first transmission system and drive the second side wheel through the first transmission system.
  • One side wheel when the first clutch is engaged, the engine is connected to the generator
  • the separation or engagement between the two components can be realized through the first clutch and the second transmission synchronizer, reducing one clutch, thereby reducing the number of components in the electric vehicle drive system, and improving the driving performance of the electric vehicle. efficiency.
  • connection assembly includes: a first transmission and a first clutch.
  • the generator is connected with the engine through the first clutch; the input shaft of the first transmission is connected with the generator, and the output shaft of the first transmission is connected with the first transmission system; the first transmission includes a synchronizer.
  • the engine when the first clutch is engaged, the engine is connected to the generator, the engine can drive the generator to generate electric energy, and the generator outputs the generated electric energy to the battery system; when the synchronizer connects the generator to the first transmission system, the generator The engine can drive the first side wheel through the first transmission system; when the first clutch is engaged and the synchronizer connects the generator with the first transmission system, the engine can be connected with the first transmission system, and the engine can be driven through the first transmission system Wheels on the first side.
  • connection assembly includes: a first transmission, a second transmission and a dual clutch.
  • the input shaft of the first transmission is connected with the engine through a dual clutch, and the output shaft of the first transmission is connected with the generator;
  • the input shaft of the second transmission is connected with the first transmission and the engine through a dual clutch, and the output shaft of the second transmission is connected with the engine.
  • the engine when the dual clutch connects the generator to the engine, the engine can drive the generator to generate electric energy, and the generator can output the generated electric energy to the battery system; when the dual clutch connects the generator to the first transmission system, the generator Connected with the first transmission system, the generator can drive the first side wheel through the first transmission system; when the dual clutch connects the engine to the first transmission system, the engine can drive the first side wheel through the first transmission system.
  • the engine can be connected to the first power system through a transmission and a clutch.
  • the engine directly drives the electric vehicle, the number of components on the power transmission path can be reduced, and the driving efficiency of the electric vehicle can be improved.
  • connection assembly includes: a first transmission and a dual clutch.
  • the generator is connected with the engine through the double clutch; the input shaft of the first transmission is connected with the engine and the generator through the double clutch, and the output shaft of the first transmission is connected with the first transmission system.
  • the engine when the dual clutch connects the generator to the engine, the engine can drive the generator to generate electric energy, and the generator can output the generated electric energy to the battery system; when the dual clutch connects the generator to the first transmission system, the generator The first side wheels can be driven through the first transmission system; when the dual clutch connects the engine to the first transmission system, the engine can drive the first side wheels through the first transmission system.
  • connection assembly includes: a first transmission, a second transmission and a synchronizer.
  • the coupling teeth of the synchronizer are respectively connected with the output shaft of the first transmission and the input shaft of the second transmission, the gear hub of the synchronizer is connected with the generator; the input shaft of the first transmission is connected with the engine; the input shaft of the second transmission is connected with the generator The output shaft of the second transmission is connected with the first transmission system.
  • the engine when the synchronizer connects the engine with the generator, the engine can drive the generator to generate electric energy, and the generator can output the generated electric energy to the battery system; when the synchronizer connects the generator with the first transmission system, the generator The first side wheel may be driven by a first driveline.
  • the synchronizer can control the connection between the generator and the engine, and control the connection between the generator and the first transmission system, thereby eliminating the need to configure a clutch, reducing the number of components and drive control costs of the electric vehicle drive system.
  • connection assembly includes: a first transmission and a synchronizer.
  • the coupling teeth of the synchronizer are respectively connected with the input shaft of the first transmission and the generator, and the gear hub of the synchronizer is connected with the generator; the input shaft of the first transmission is connected with the generator, and the output shaft of the first transmission is connected with the first Driveline connection.
  • the engine when the synchronizer connects the engine to the generator, the engine can drive the generator to generate electric energy, and the generator can output the generated electric energy to the battery system;
  • the generator can drive the first side wheel through the first driveline.
  • the second powertrain includes: an electric motor and a third transmission.
  • the electric motor is connected with the battery system; the input shaft of the third transmission is connected with the electric motor, and the output shaft of the third transmission is connected with the second transmission system.
  • the first transmission includes: a speed reducer or a speed increaser.
  • an embodiment of the present application provides an electric vehicle, which includes a vehicle body, a first side wheel, a second side wheel, and a drive system for the electric vehicle in any of the above technical solutions of the present application. Since the generator in the electric vehicle drive system proposed by this application can also drive the electric vehicle, the multiplexing of the generator is realized. Therefore, the electric vehicle of the present application has the advantages of improving the driving efficiency of the electric vehicle and simplifying the structure.
  • Fig. 1 is a structural schematic diagram 1 of an electric vehicle drive system provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram II of an electric vehicle drive system provided in an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a power transmission driving an electric vehicle drive system provided by an embodiment of the present application
  • Fig. 4 is a second schematic diagram of power transmission driving the driving system of an electric vehicle provided by the embodiment of the present application.
  • Fig. 5 is a schematic diagram 3 of power transmission driving an electric vehicle drive system provided by the embodiment of the present application.
  • Fig. 6 is a schematic diagram 4 of power transmission driving an electric vehicle drive system provided by an embodiment of the present application.
  • Fig. 7 is a structural schematic diagram 3 of a drive system for driving an electric vehicle provided by the embodiment of the present application.
  • Fig. 8 is a structural schematic diagram 4 of a drive system for driving an electric vehicle provided by the embodiment of the present application.
  • Fig. 9 is a schematic diagram 5 of power transmission driving an electric vehicle drive system provided by the embodiment of the present application.
  • Fig. 10 is a six schematic diagram of power transmission driving the drive system of an electric vehicle provided by the embodiment of the present application.
  • Fig. 11 is a schematic diagram of a power transmission driving an electric vehicle drive system provided by an embodiment of the present application VII;
  • Fig. 12 is a schematic diagram 8 of power transmission driving an electric vehicle drive system provided by the embodiment of the present application.
  • Fig. 13 is a structural schematic diagram V of a drive system for driving an electric vehicle provided by the embodiment of the present application;
  • Fig. 14 is a schematic structural diagram six of a drive system for driving an electric vehicle provided by the embodiment of the present application.
  • Fig. 15 is a structural schematic diagram VII of a drive system for driving an electric vehicle provided by the embodiment of the present application.
  • Fig. 16 is a schematic structural diagram eighth of a drive system for driving an electric vehicle provided by an embodiment of the present application.
  • Fig. 17 is a schematic diagram of a power transmission driving an electric vehicle drive system provided by an embodiment of the present application.
  • Fig. 18 is a schematic diagram of a power transmission driving an electric vehicle drive system provided by an embodiment of the present application.
  • Fig. 19 is an eleventh schematic diagram of power transmission driving an electric vehicle drive system provided by an embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of a driving system for driving an electric vehicle provided in an embodiment of the present application.
  • references to "one embodiment” or “some embodiments” or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically stated otherwise.
  • the terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless specifically stated otherwise.
  • extended-range hybrid electric vehicles can provide power for electric vehicles when the remaining battery power is insufficient.
  • a generator and an engine need to be installed in an extended-range hybrid electric vehicle.
  • the engine can drive the generator to generate electricity, and output the electric energy generated by the generator to the battery, so that the battery can also meet the needs of the electric vehicle when the remaining power of the battery is insufficient.
  • the need for power
  • a range-extended hybrid electric vehicle requires a separate generator for power generation, which will occupy the interior space of the electric vehicle, increase the power consumption of the electric vehicle, and increase the cost of the electric vehicle.
  • an electric vehicle drive system may include a first powertrain 1 , a second powertrain 2 , a first transmission system 3 , a second transmission system 4 and a battery system 5 .
  • the power assembly 1 is connected with the first transmission system 3, and the first transmission system 3 is used to drive and connect the first side wheels of the electric vehicle;
  • the second power assembly 2 is connected with the second transmission system 4, and the second transmission system 4 It is used to drive the second side wheel of the electric vehicle.
  • the first transmission system 3 is used to drive the front wheels of the electric vehicle, and the second transmission system 4 is used to drive the rear wheels of the electric vehicle; or, the first transmission system 3 is used to drive the rear wheels of the electric vehicle, and the second transmission system 4 is used to drive the rear wheels of the electric vehicle.
  • the transmission system 4 is used to drive the front wheels of the electric vehicle.
  • the first powertrain 1 includes a generator and an engine (not shown).
  • the engine is used to drive the generator to generate electric energy, or to drive the first side wheel through the first transmission system 3 .
  • the generator is used to drive the first side wheel through the first transmission system 3 , or output the generated electric energy to the battery system 4 .
  • the second power assembly 2 is used to drive the second side wheels through the second transmission system 4 .
  • the battery system 5 is connected with the generator and the second power assembly 2, and is used for receiving the electric energy output by the generator, and outputting the stored electric energy to the second power assembly 2 and/or the generator.
  • the second powertrain 2 when driving the electric vehicle, can drive the second side wheels through the second transmission system 4, and the generator or engine in the first powertrain 1 can drive the second side wheels through the first transmission system 4.
  • System 3 drives the wheels on the first side.
  • the generator can not only be used as a generator, but also as a motor to realize the multiplexing of the generator. Therefore, it is not necessary to configure the motor separately, and it is not necessary to reserve a place for configuring the generator. Space, thereby reducing the number of components of the electric vehicle, reducing the volume occupied by the drive system of the electric vehicle, and reducing the cost of the electric vehicle.
  • the electric vehicle drive system provided in this application can use the first power assembly 1 to provide power for the electric vehicle, that is, the front drive mode; it can also use the second power assembly 2 to provide power for the electric vehicle, that is, the rear drive mode.
  • a four-wheel drive mode can also be adopted, that is, the first power assembly 1 and the second power assembly 2 jointly provide power for the electric vehicle.
  • the two powertrains can be in the form of asynchronous, electric excitation, synchronous, etc.
  • the electric vehicle drive system can switch between the front drive mode, the rear drive mode and the four-wheel drive mode.
  • the drive system of the electric vehicle may also include a controller, which can be used for switching the electric vehicle between the front drive mode, the rear drive mode and the four-wheel drive mode, and controlling the output power of the electric vehicle in each mode.
  • the first power assembly 1 further includes a connection assembly.
  • the engine is connected to the generator through a connection assembly; the engine is connected to the first transmission system 3 through a connection assembly; the generator is connected to the first transmission system 3 through a connection assembly.
  • Fig. 2 exemplarily shows a schematic structural diagram of an electric vehicle drive system in an embodiment of the present application.
  • the first powertrain 1 may include a generator 11, an engine 12, a first transmission 13, a second transmission 14, a first clutch 15 and a second clutch 16;
  • the second powertrain 2 includes an electric motor 17 and a third transmission 18.
  • the first transmission 13 , the second transmission 14 , the first clutch 15 and the second clutch form a connection assembly.
  • the generator 11 when the first clutch 15 is engaged, the generator 11 is connected to the engine 12, at this time, the engine 12 can drive the generator 11 to generate electric energy, and the generator 11 can output the generated electric energy to the battery system 5; when the second clutch 16 is combined, the generator 11 can be connected with the first transmission system 3, and the generator 11 can drive the first side wheel through the first transmission system 3; when the first clutch 15 and the second clutch 16 are combined, the engine 12 can be connected with the second clutch 16 A transmission system 3 is connected, and the engine 12 can drive the first side wheel through the first transmission system 3 .
  • the input shaft of the first speed changer 13 is connected with engine 12 by first clutch 15, and the output shaft of first speed changer 13 is connected with generator 11;
  • the input shaft of second speed changer 14 is connected with generator 11 by second clutch 15 Connected, the output shaft of the second transmission 14 is connected with the first transmission system 2;
  • the input shaft of the third transmission 18 is connected with the motor 17, and the output shaft of the third transmission is connected with the second transmission system 3;
  • the first generator 11 and the motor 17 are all connected with battery system 4.
  • the first transmission 13 may be a speed reducer or a speed increaser, and the second transmission 14 and the third transmission 18 are both speed reducers. It should be noted that the first transmission 13 , the second transmission 14 and the third transmission may be single-speed transmissions or multi-speed transmissions. Wherein, the first transmission 13 , the second transmission 14 and the third transmission may be fixed shaft gear trains or planetary gear trains.
  • the first clutch 15 can be a one-way clutch.
  • the second clutch 16 can be arranged inside the second transmission 14 , and similarly, the first clutch 15 can also be arranged inside the first transmission 13 .
  • the first clutch 15 and the second clutch 16 can also be replaced by other devices capable of power engagement and disengagement, for example, a synchronizer or a gear sleeve.
  • the battery system 5 can output the stored electric energy to the electric motor 17, and the electric motor 17 rotates and passes
  • the input shaft of the third transmission 18 is transmitted to the third transmission 18, through the gear transmission inside the third transmission 18, the power is output to the output shaft of the third transmission 18, and is supplied to the electric vehicle through the second transmission system 4 for driving.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 3 .
  • the battery system 5 When the electric vehicle is running normally, if the remaining capacity of the battery system 5 can meet the current power demand of the electric vehicle, and the electric vehicle has a high demand for power, the battery system 5 can output the stored electric energy to the electric motor 17, and the electric motor 17 rotates and passes The input shaft of the third transmission 18 is transmitted to the third transmission 18, and through the gear transmission inside the third transmission 18, the power is output to the output shaft of the third transmission 18, and is supplied to the electric vehicle through the second transmission system 4 to run.
  • the second clutch 16 controls the engagement of the generator 11 and the second transmission 14, the battery system 5 outputs the stored electric energy to the generator 11, the generator 11 rotates as a motor and is transmitted to the second transmission 14 through the input shaft of the second transmission 14, through The gears inside the second transmission 14 are driven, and the power is output to the output shaft of the second transmission 14 , and is supplied to the electric vehicle for driving through the first transmission system 3 .
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 4 .
  • the first clutch 15 controls the engine 12 to engage with the first transmission 13, and the engine 12 drives the power generation
  • the machine 11 rotates, and the generator 11 generates electrical energy, and outputs the generated electrical energy to the connected battery system 5 .
  • the battery system 5 outputs the stored electric energy to the electric motor 17, and the electric motor 17 rotates and is transmitted to the third transmission 18 through the input shaft of the third transmission 18, and the power is output to the third transmission 18 through the gear transmission inside the third transmission 18
  • the output shaft is supplied to the electric vehicle through the second transmission system 4.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 5 .
  • the first clutch 15 controls the engine 12 to engage with the first transmission 13
  • the second clutch 16 controls the first transmission 13 to engage with the second transmission 13.
  • the transmission 14 is engaged, and the power output by the engine 12 is sequentially input into the first transmission 13 and the second transmission 14, and through the gear transmission inside the first transmission 13 and the second transmission 14, the power is output to the output shaft of the second transmission 14, and passes through
  • the first transmission system 3 supplies electric vehicles to travel.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 6 .
  • a shock absorber such as a torque shock absorber or a dual mass flywheel, may be connected between the generator 11 and the first clutch 15 .
  • the engine and the generator can be at the same speed.
  • the first power assembly 1 can include: a generator 21, an engine 22, a first The transmission 23 , the first clutch 24 and the second clutch 25 ; the second powertrain 2 may include an electric motor 26 and a third transmission 27 .
  • the first transmission 23 , the first clutch 24 and the second clutch 25 form a connecting assembly.
  • engine 22 is connected with generator 21 by first clutch 24;
  • the input shaft of first speed changer 23 is connected with generator 21 by second clutch 25, and the output shaft of first speed changer 23 is connected with first transmission system 3;
  • the input shaft of the third transmission 27 is connected with the electric motor 26 , and the output shaft of the third transmission is connected with the second transmission system 4 ; both the first generator 21 and the electric motor 26 are connected with the battery system 5 .
  • the engine 22 when the first clutch 24 is combined, the engine 22 can be connected with the generator 21, at this time, the engine 22 drives the generator 21 to generate electric energy, and the generator 21 can output the generated electric energy to the battery system 5; when the second clutch 25 is combined, the generator 21 can be connected with the first transmission system 3, and the generator 21 can drive the first side wheel through the first transmission system 3; when the first clutch 24 and the second clutch 25 are combined, the engine 22 can be connected with the first side wheel A transmission system 3 is connected. At this time, the engine 22 drives the first side wheel through the first transmission system 3 .
  • Fig. 8 exemplarily shows a schematic structural diagram of an electric vehicle drive system in an embodiment of the present application.
  • the first power assembly 1 may include a generator 31 , an engine 32 , a first transmission 33 , a second transmission 34 and a first clutch 35 ;
  • the second power assembly 2 includes an electric motor 36 and the third transmission 37 .
  • the input shaft of the first speed changer 33 is connected with the engine 32 by the first clutch 35, the output shaft of the first speed changer 33 is connected with the engine 31; the input shaft of the second speed changer 34 is connected with the generator 31, and the second speed changer 34
  • the output shaft of the third transmission 37 is connected with the first transmission system 3; the input shaft of the third transmission 37 is connected with the electric motor 36, and the output shaft of the third transmission 37 is connected with the second transmission system 4; both the first generator 31 and the electric motor 36 are connected with the battery system 5 connections.
  • the engine 32 when the first clutch 35 is combined, the engine 32 can be connected with the generator 31, at this time, the engine 32 can drive the generator 31 to generate electric energy, and the generator 31 can output the generated electric energy to the battery system;
  • the generator 31 When the generator 31 is connected with the first transmission system 3, the generator 31 can drive the first side wheel through the first transmission system 3;
  • the engine 32 when the first clutch 35 is engaged and the synchronizer connects the generator 31 with the first transmission system 3 , the engine 32 can be connected with the first transmission system, at this time, the engine 32 can drive the first side wheel through the first transmission system.
  • the first transmission 33 may be a speed reducer or a speed increaser.
  • the third transmission 37 is a speed reducer. It should be noted that the first transmission 33 and the third transmission 37 may be single-speed transmissions or multi-speed transmissions. Wherein, the first transmission 33 , the second transmission 34 and the third transmission may be fixed shaft gear trains or planetary gear trains.
  • a synchronizer is arranged inside the second transmission 34 , and the coupling teeth of the synchronizer can be arranged on the two-stage transmission gears of the second transmission 34 to realize that the second transmission 34 is in a neutral state.
  • the generator 31 is engaged with the first transmission system 3 through the second transmission 34 , and when the second transmission 34 is in a neutral state, the engagement of the generator and the first transmission system 3 is cut off.
  • the first clutch 35 may be a one-way clutch. Wherein, the first clutch 35 can also be arranged in the first transmission 33 . It should be understood that in the present application, the first clutch 15 may also be replaced by other devices capable of power engagement and disengagement, for example, a synchronizer or a gear sleeve.
  • the battery system 5 can output the stored electric energy to the electric motor 36, and the electric motor 36 rotates and passes
  • the input shaft of the third transmission 37 is transmitted to the third transmission 37, through the gear transmission inside the third transmission 37, the power is output to the output shaft of the third transmission 37, and is supplied to the electric vehicle through the second transmission system 4 for driving.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 9 .
  • the battery system 5 can output the stored electric energy to the electric motor 36, and the electric motor 36 rotates and passes
  • the input shaft of the third speed changer 37 is transmitted to the third speed changer 37, and through the gear transmission inside the third speed changer 37, the power is output to the output shaft of the third speed changer 37, and is supplied to the electric vehicle to run through the second transmission system 4.
  • the battery The system 5 outputs the stored electric energy to the generator 31, the generator 31 rotates as a motor and is transmitted to the second transmission 34 through the input shaft of the second transmission 34, and the power is output to the second transmission 34 through the gear transmission inside the second transmission 34 34 output shaft, and supply the electric vehicle through the first transmission system 3.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 10 .
  • the first clutch 35 controls the engine 32 to engage with the first transmission 33, and the engine 32 drives the power generation
  • the motor 31 rotates, and the generator 31 generates electrical energy, and outputs the generated electrical energy to the connected battery system 5 .
  • the battery system 5 outputs the stored electric energy to the motor 36, the motor 36 rotates and is transmitted to the third transmission 37 through the input shaft of the third transmission 37, and the power is output to the third transmission 37 through the gear transmission inside the third transmission 37
  • the output shaft is supplied to the electric vehicle through the second transmission system 4.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 11 .
  • the first clutch 35 controls the engine 32 to engage with the first transmission 33, and the power output by the engine 32 is sequentially input to the first transmission 33 And the second transmission 34, through the gear transmission inside the first transmission 33 and the second transmission 34, the power is output to the output shaft of the second transmission 34, and is supplied to the electric vehicle through the first transmission system 3 for driving.
  • the power transmission path of an electric vehicle can be seen in Figure 12.
  • a shock absorber such as a torque shock absorber or a dual-mass flywheel, may be connected between the generator 31 and the first clutch 35 .
  • the engine and the generator can be at the same speed.
  • the first powertrain 1 includes: a generator 41, an engine 42, a first transmission 43 and a first clutch 44 ; the second powertrain 2 may include an electric motor 45 and a third transmission 46 .
  • the first transmission 43 and the first clutch 44 constitute a connecting assembly.
  • the generator 41 is connected with the engine 42 through the first clutch 45; the input shaft of the first transmission 43 is connected with the generator 41, and the output shaft of the first transmission 43 is connected with the first transmission system 3
  • the input shaft of the third transmission 46 is connected with the motor 45 , and the output shaft of the third transmission 46 is connected with the second transmission system 4 ; both the first generator 41 and the motor 45 are connected with the battery system 5 .
  • the engine 42 can be connected with the generator 41, at this time, the engine 42 can drive the generator 41 to generate electric energy, and the generator 41 can output the generated electric energy to the battery system 5; when the synchronizer When the generator 41 is connected with the first transmission system 3, the generator 41 drives the first side wheel through the first transmission system 3; when the first clutch 44 is engaged and the synchronizer connects the generator 41 with the first transmission system 3 , the engine 42 can be connected with the first transmission system 3 , at this time, the engine 42 can drive the first side wheel through the first transmission system 3 .
  • Fig. 14 exemplarily shows a schematic structural diagram of an electric vehicle drive system in an embodiment of the present application.
  • the first power assembly 1 may include a generator 51 , an engine 52 , a first transmission 53 , a second transmission 54 and a dual clutch 55 ;
  • the second power assembly 2 may include an electric motor 56 and the third transmission 57 .
  • the first transmission 53 , the second transmission 54 and the dual clutch 55 form a connection assembly.
  • the dual clutch 55 includes three ports, namely a port 551 , a port 552 and a port 553 .
  • the input shaft of the first speed changer 53 is connected with the engine 52, the output shaft of the first speed changer 53 is connected with the first output shaft 552 of the double clutch 55; the input shaft of the second speed changer 54 is connected with the second output shaft of the double clutch 55
  • the shaft 553 is connected, the output shaft of the second transmission 54 is connected with the first transmission system 2; the input end 551 of the double clutch 55 is connected with the generator 51; the input shaft of the third transmission 57 is connected with the motor 56, and the output of the third transmission 57
  • the shaft is connected to the second transmission system 3 ; both the first generator 51 and the electric motor 56 are connected to the battery system 4 .
  • the generator 51 when the port 552 in the dual clutch 55 is combined with the port 551, the generator 51 is connected to the engine 52 through the first transmission 53. At this time, the engine 52 can drive the generator 51 to generate electric energy, and the generator 51 can generate Electric energy is output to the battery system 5; when the port 552 in the dual clutch 55 is combined with the port 553, the generator 51 can be connected with the first transmission system 3 through the first transmission 53 and the second transmission 54, and the generator 51 can be connected through the first The transmission system 3 drives the first side wheel; when the port 551 and the port 553 in the dual clutch 55 are combined, the engine 52 can be connected with the first transmission system 3 through the second transmission 54, and the engine 52 can drive the first transmission system 3 through the first transmission system. One side wheel.
  • the first transmission 53 may be a speed reducer or a speed increaser
  • the second transmission 54 and the third transmission 57 are both speed reducers.
  • the first transmission 53 , the second transmission 54 and the third transmission 57 may be single-speed transmissions or multi-speed transmissions.
  • the first transmission 53 , the second transmission 54 and the third transmission 57 may be fixed shaft gear trains or planetary gear trains.
  • the double clutch 55 can be arranged in the first transmission 53 . It should be understood that in this application, the dual clutch 55 can also be replaced by other devices with power engagement and disengagement, for example, a synchronizer or a gear sleeve.
  • a shock absorber such as a torque shock absorber or a dual mass flywheel, may be connected between the generator 51 and the dual clutch 55 .
  • the engine and the generator can be at the same speed.
  • the first powertrain 1 can include: a generator 61, an engine 62, The transmission 63 and the dual clutch 64 ; the second powertrain 2 may include an electric motor 65 and a third transmission 66 .
  • the first transmission 63 and the dual clutch 64 form a connection assembly.
  • the dual clutch 64 includes three ports, namely a port 641 , a port 642 and a port 643 .
  • generator 61 is connected with engine 62 through dual clutch 64; connection; the input shaft of the third transmission 66 is connected with the electric motor 65 , and the 66 output shaft of the third transmission is connected with the second transmission system 4 ; both the generator 61 and the electric motor 65 are connected with the battery system 5 .
  • the generator 61 when the port 641 and the port 642 in the dual clutch 64 are combined, the generator 61 is connected to the engine 62. At this time, the engine 62 can drive the generator 61 to generate electric energy, and the generator 61 can output the generated electric energy to the battery system 5.
  • the generator 61 can be connected with the first transmission system 3 through the first transmission 63, and the generator 61 can drive the first side wheel through the first transmission system 3;
  • the engine 62 can be connected with the first transmission system 3 through the first transmission 63 , and at this time, the engine 62 can drive the first side wheel through the first transmission system 3 .
  • Fig. 16 exemplarily shows a schematic structural diagram of an electric vehicle drive system in an embodiment of the present application.
  • the first power assembly 1 may include a generator 71 , an engine 72 , a first transmission 73 , a second transmission 74 and a synchronizer 75 ;
  • the second power assembly 2 may include an electric motor 76 and the third transmission 77 .
  • the first transmission 73 , the second transmission 74 and the synchronizer 75 form a connection assembly.
  • the coupling tooth of synchronizer 75 is connected with the output shaft of the first speed changer 73 and the input shaft of the second speed changer 74 respectively, and the gear hub of the synchronizer is connected with generator 11;
  • the input shaft of the first speed changer 73 is connected with engine 72 Connect;
  • the input shaft of the second speed changer 74 is connected with the generator 71, the output shaft of the second speed changer 74 is connected with the first transmission system 3;
  • the input shaft of the third speed changer 77 is connected with the motor 76, and the output shaft of the third speed changer is connected with the first transmission system 3
  • the two transmission systems 4 are connected; the first generator 71 and the motor 76 are both connected to the battery system 5 .
  • the engine 72 can drive the generator 71 to generate electric energy, and the generator 71 can output the generated electric energy to the battery system 5; when the synchronizer 75 connects the generator 71 to the When the first transmission system 3 is connected, the generator 71 drives the first side wheel through the first transmission system 3 .
  • the first transmission 73 may be a speed reducer or a speed increaser, and the second transmission 74 and the third transmission 77 are both speed reducers. It should be noted that the first transmission 73 , the second transmission 74 and the third transmission 77 can be single-speed transmissions or multi-speed transmissions. Wherein, the first transmission 73 , the second transmission 74 and the third transmission 77 may be fixed shaft gear trains or planetary gear trains.
  • the battery system 5 can output the stored electric energy to the electric motor 76, and the electric motor 76 rotates and passes The input shaft of the third transmission 77 is transmitted to the third transmission 77, through the gear transmission inside the third transmission 77, the power is output to the output shaft of the third transmission 77, and is supplied to the electric vehicle through the second transmission system 4 for driving.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 17 .
  • the battery system 5 can output the stored electric energy to the electric motor 76, and the electric motor 76 rotates and passes The input shaft of the third transmission 77 is transmitted to the third transmission 77, and through the gear transmission inside the third transmission 77, the power is output to the output shaft of the third transmission 77, and is supplied to the electric vehicle through the second transmission system 4 to run.
  • the battery The system 5 outputs the stored electric energy to the generator 71, the synchronizer 75 and the gear transmission inside the second transmission 74, the generator 71 rotates as a motor and is transmitted to the second transmission 74 through the input shaft of the second transmission 74, and passes through the second transmission 74.
  • Gear transmission inside the transmission 74 the power is output to the output shaft of the second transmission 74 , and is supplied to the electric vehicle for driving through the first transmission system 3 .
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 18 .
  • the synchronizer 75 controls the engine 72 to engage with the generator 71, and the engine 72 drives the generator 71 Rotating, the generator 71 generates electrical energy, and outputs the generated electrical energy to the connected battery system 5 .
  • the battery system 5 outputs the stored electric energy to the motor 76, the motor 76 rotates and is transmitted to the third transmission 77 through the input shaft of the third transmission 77, and the power is output to the third transmission 77 through the gear transmission inside the third transmission 77
  • the output shaft is supplied to the electric vehicle through the second transmission system 4.
  • the power transmission path of the electric vehicle can be referred to as shown in FIG. 19 .
  • a shock absorber such as a torque shock absorber or a dual mass flywheel, may be connected between the generator 71 and the synchronizer 75 .
  • the engine and the generator can be at the same speed.
  • the first powertrain 1 can include a generator 81, an engine 82, a first transmission 83 and a synchronizer 84; the second powertrain 2 includes an electric motor 85 and a third transmission 86.
  • the first transmission 86 and the synchronizer 84 constitute a connection assembly.
  • the coupling teeth of the synchronizer 84 are respectively connected with the input shaft of the first transmission 83 and the engine 82, and the gear hub of the synchronizer 84 is connected with the generator 81; the input shaft of the first transmission 83 is connected with the generator 81, and the second The output shaft of a speed changer 83 is connected with the first transmission system 3; the input shaft of the third speed changer 86 is connected with the motor 85, and the output shaft of the third speed changer 86 is connected with the second transmission system 3; the first generator 81 and the motor 85 are both Connect with the battery system 5.
  • the synchronizer 84 when the synchronizer 84 connects the engine 82 to the generator 81, the engine 82 can drive the generator 81 to generate electric energy, and the generator 81 can output the generated electric energy to the battery system 5; when the synchronizer 84 connects the generator 81 to the When the first transmission system 3 is connected, the generator 81 can drive the first side wheel through the first transmission system 3 .
  • the present application also provides an electric vehicle, which has a wheel, a first side wheel, a second side wheel, and the electric vehicle drive system in any of the solutions above.
  • the generator can be used as a motor to drive the electric vehicle, realizing the multiplexing of the generator, so that there is no need to configure a separate motor, which reduces the number of components in the electric vehicle drive system. Reduce the driving cost of electric vehicles and increase the usable space for passengers.

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Abstract

一种电动汽车驱动系统和电动汽车，该电动汽车驱动系统包括：第一动力总成（1）、第二动力总成（2）、第一传动系统（3）、第二传动系统（4）和电池系统（5）；第一动力总成（1）与第一传动系统（3）连接；第二动力总成（2）与第二传动系统（4）连接；第一动力总成（1）包括发电机（11、21、31、41、51、61、71、81）和发动机（12、22、32、42、52、62、72、82），发动机（12、22、32、42、52、62、72、82）驱动发电机（11、21、31、41、51、61、71、81）产生电能，或者通过第一传动系统（3）驱动第一侧车轮；发电机（11、21、31、41、51、61、71、81）通过第一传动系统（3）驱动第一侧车轮，或者将产生的电能输出给电池系统（5）；第二动力总成（2）通过第二传动系统（4）驱动第二侧车轮；电池系统（5）与发电机（11、21、31、41、51、61、71、81）和第二动力总成（2）连接，用于接收发电机（11、21、31、41、51、61、71、81）输出的电能，将存储的电能输出给第二动力总成（2）和/或发电机（11、21、31、41、51、61、71、81）。

Description

电动汽车驱动系统和电动汽车 技术领域
本申请涉及汽车技术领域，具体涉及一种电动汽车驱动系统和电动汽车。
背景技术
随着近年来能源和环境问题的日益突出，以燃油作为能源的汽车受到了一定的限制和冲击。电动汽车由电池作为动力来源，相较于传统的燃油汽车具有节能、低污染、效率高等众多优点，因此在近些年来得到迅猛发展。
目前，电动汽车的类型主要包括两类，主要包括电池驱动电动驱动汽车和以电池和燃油结合的驱动电动汽车，增程式混动电动汽车作为混动电动汽车的一种，以其可以实现燃油的发动机带动发电机产电，并为电池提供电量而被广泛应用，但是目前使用的增程式混动方案中，发电机只能用于发电，因此增程式混动方案为了实现混动则需要在原来的驱动系统上，单独配置一个发电机，而新增的发电机会占用部分汽车空间，减少乘客可利用空间，同时使电动汽车的成本增加。
发明内容
本申请提供了一种电动汽车驱动系统和电动汽车，用于降低电动汽车的驱动成本，增加电动汽车的空间，同时实现电动汽车四驱模式，提升电动汽车性能。
第一方面，本申请实施例提供了一种电动汽车驱动系统，该电动汽车驱动系统包括：第一动力总成、第二动力总成、第一传动系统、第二传动系统和电池系统。
其中，第一动力总成与第一传动系统连接，第一传动系统用于传动连接电动汽车的第一侧车轮；第二动力总成与第二传动系统连接，第二传动系统用于传动连接电动汽车的第二侧车轮；第一动力总成包括发电机和发动机，发动机用于驱动发电机产生电能，或者通过第一传动系统驱动第一侧车轮；发电机用于通过第一传动系统驱动第一侧车轮，或者将产生的电能输出给电池系统；第二动力总成，用于通过第二传动系统驱动连接的第二侧车轮；电池系统，与发电机和第二动力总成连接，用于接收发电机输出的电能，且将存储的电能输出给第二动力总成和/或发电机。需要指出的是，第一侧和第二侧中，其中一侧为前侧，另一侧为后侧。即第一传动系统用于驱动电动汽车的前侧车轮，第二传动系统用于驱动电动汽车的后侧车轮；或者，第一传动系统用于驱动电动汽车的后侧车轮，第二传动系统用于驱动电动汽车的前侧车轮。
本申请提供的电动汽车驱动系统，包括两个动力总成、且两个动力总成分别传动连接一个传动系统，当电动汽车电池系统的剩余电量充足时，电池系统可以同时给第一动力总成的发电机和第二动力总成传输电能，从而使发电机作为电动机通过第一传动系统驱动第一侧车轮，当电动汽车电池系统的剩余电量无法满足电动汽车对动力的需求时，可以采用发动机直驱为电动汽车提供动力，也可以采用发动机驱动发电机产电为电池系统充电，从而使电池系统的剩余电量可以满足电动汽车对动力的需求。因此，本申请提供的电动汽车驱动系统，第一动力总成中的发电机可以作为发电机为电池系统提供电能，也可以作为电动机通过第一传动系统驱动车轮，减少了电动汽车驱动系统的器件数量以及减小了电动汽 车驱动系统的占用体积，提高车辆驱动系统运行效率，简化结构。
在一种可能的实现方式中，第一动力总成还包括连接组件。
其中，发动机与发电机之间通过连接组件传动连接；发动机与第一传动系统之间通过连接组件传动连接；发电机与第一传动系统之间通过连接组件传动连接。
在一种可能的实现方式中，连接组件包括：第一变速器、第二变速器、第一离合器和第二离合器。
其中，第一变速器的输入轴通过第一离合器与发动机连接，第一变速器的输出轴与发电机连接；第二变速器的输入轴通过第二离合器与发电机连接，第二变速器的输出轴与第一传动系统连接。
采用上述电动汽车的驱动系统，可以通过控制离合器，实现两个器件之间的分离或接合。
在一种可能的实现方式中，连接组件包括：第一变速器、第一离合器和第二离合器。
其中，发电机通过第一离合器与发动机连接；第一变速器的输入轴通过第二离合器与发电机连接，第一变速器的输出轴与第一传动系统连接。
具体地，当第一离合器结合时，发电机与电动机连接，发动机可以驱动发电机产生电能，发电机将产生的电能输出给电池系统；当第二离合器结合时，发电机与第一传动机系统连接，发电机可以通过第一传动系统驱动第一侧车轮；当第一离合器和第二离合器结合时，发动机与第一传动系统连接，发动机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，发电机和发动机之间无增速或者减速，从而减少发电机与发电机之间的动力传输器件，提升产电效率。
在一种可能的实现方式中，连接组件包括：第一变速器、第二变速器和第一离合器。
其中，第一变速器的输入轴通过第一离合器与发动机连接，第一变速器的输出轴与发电机连接；第二变速器的输入轴与发电机连接，第二变速器的输出轴与第一传动系统连接；第二变速器中包括同步器。
具体地，当第一离合器结合时，发动机与发电机连接，发动机可以驱动发电机产生电能，发电机将产生的电能输出给电池系统；当同步器使发电机与第一传动系统连接时，发电机可以通过第一传动系统驱动第一侧车轮；当第一离合器结合、且同步器使发电机与第一传动系统连接时，发动机可以与第一传动系统连接，并通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，可以通过第一离合器和第二变速器同步器实现两个器件之间的分离或接合，减少了一个离合器，从而减少了电动汽车驱动系统的器件数量，提升电动汽车的驱动效率。
在一种可能的设计中，连接组件包括：第一变速器和第一离合器。
其中，发电机通过第一离合器与发动机连接；第一变速器的输入轴与发电机连接，第一变速器的输出轴与第一传动系统连接；第一变速器中包括同步器。
具体地，当第一离合器结合时，发动机与发电机连接，发动机可以驱动发电机产生电能，发电机将产生的电能输出给电池系统；当同步器使发电机与第一传动系统连接时，发电机可以通过第一传动系统驱动第一侧车轮；当第一离合器结合、且同步器使发电机与第一传动系统连接时，发动机可以与第一传动系统连接，发动机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，发电机和发动机之间无增速或者减速，从而减少了发电机与发电机之间的动力传输器件数量，提升电动汽车的驱动效率。
在一种可能的设计中，连接组件包括：第一变速器、第二变速器和双离合器。
其中，第一变速器的输入轴通过双离合器与发动机连接，第一变速器的输出轴与发电机连接；第二变速器的输入轴通过双离合器与第一变速器和发动机连接，第二变速器的输出轴与第一传动系统连接。
具体地，当双离合器使发电机与发动机连接时，发动机可以驱动发电机产生电能，发电机可以将产生的电能输出给电池系统；当双离合器使发电机与第一传动系统连接时，发电机与第一传动系统连接，发电机可以通过第一传动系统驱动第一侧车轮；当双离合器使发动机与第一传动系统连接时，发动机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，发动机可以通过一个变速器和一个离合器实现与第一动力系统连接，当发动机直接驱动电动汽车时，可以减少动力传输路径上器件的数量，可以提升电动汽车的驱动效率。
在一种可能的实现方式中，连接组件包括：第一变速器和双离合器。
其中，发电机通过双离合器与发动机连接；第一变速器的输入轴通过双离合器与发动机和发电机连接，第一变速器的输出轴与第一传动系统连接。
具体地，当双离合器使发电机与发动机连接时，发动机可以驱动发电机产生电能，发电机可以将产生的电能输出给电池系统；当双离合器使发电机与第一传动系统连接时，发电机可以通过第一传动系统驱动第一侧车轮；当双离合器使发动机与第一传动系统连接时，发动机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，发电机和发动机之间无增速或者减速，从而减少发电机与发电机之间的动力传输器件，提升产电效率。
在一种可能的实现方式中，连接组件包括：第一变速器、第二变速器和同步器。
同步器的结合齿分别与第一变速器的输出轴和第二变速器的输入轴连接，同步器的齿毂与发电机连接；第一变速器的输入轴与发动机连接；第二变速器的输入轴与发电机连接，第二变速器的输出轴与第一传动系统连接。
具体地，当同步器使发动机与发电机连接时，发动机可以驱动发电机产生电能，发电机可以将产生的电能输出给电池系统；当同步器使发电机与第一传动系统连接时，发电机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，可以通过同步器控制发电机与发动机的连接，以及控制发电机与第一传动系统的连接，从而无需配置离合器，减少了电动汽车驱动系统的器件数量以及驱动控制成本。
在一种可能的实现方式中，连接组件包括：第一变速器和同步器。
其中，同步器的结合齿分别与第一变速器的输入轴和发电机连接，同步器的齿毂与发电机连接；第一变速器的输入轴与发电机连接，第一变速器的输出轴与第一传动系统连接。
具体地，当同步器使发动机与发电机连接时，发动机可以驱动发电机产生电能，发电机可以将产生的电能输出给电池系统；
当同步器使发电机与第一传动系统连接时，发电机可以通过第一传动系统驱动第一侧车轮。
采用上述电动汽车驱动系统，发电机和发动机之间无增速或者减速，从而减少发电机 与发电机之间的动力传输器件，提升电动机的驱动效率。
在一种可能的实现方式中，第二动力总成包括：电动机和第三变速器。
其中，电动机与电池系统连接；第三变速器的输入轴与电动机连接，第三变速器的输出轴与第二传动系统连接。
在一种可能的实现方式中，第一变速器包括：减速器或者增速器。
第二方面，本申请实施例提供了一种电动汽车，该电动汽车包括车身、第一侧车轮、第二侧车轮以及本申请上述任意技术方案中的电动汽车的驱动系统。由于本申请提出的电动汽车驱动系统中发电机也可以驱动电动汽车，实现了发电机的复用，因此，本申请的电动汽车具备提高电动汽车的驱动效率和简化结构优点。
附图说明
图1为本申请实施例提供的一种电动汽车驱动系统的结构示意图一；
图2为本申请实施例提供的一种电动汽车驱动系统的结构示意图二；
图3为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图一；
图4为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图二；
图5为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图三；
图6为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图四；
图7为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图三；
图8为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图四；
图9为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图五；
图10为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图六；
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图13为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图五；
图14为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图六；
图15为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图七；
图16为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图八；
图17为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图九；
图18为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图十；
图19为本申请实施例提供的一种带动电动汽车驱动系统的动力传输示意图十一；
图20为本申请实施例提供的一种带动电动汽车驱动系统的结构示意图九。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。
以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
随着电动汽车的发展，电动汽车的续航里程要求越来越高，为了满足电动汽车的续航需求，增程式混动电动汽车以其可以在电池剩余电量不足的情况下，为电动汽车提供动力而被广泛应用。具体地，增程式混动电动汽车中需要设置发电机和发动机，发动机可以带动发电机发电，并将发电机产生的电能输出给电池，从而在电池剩余电量不足的情况下，也可以满足电动汽车对动力的需求。但是增程式混动电动汽车，需要单独的设置一个用于发电的发电机，该发电机的设置会占用电动汽车的内部空间，也会增加电动汽车的功耗，提升电动汽车的成本。
基于上述问题，本申请实施例提供的一种电动汽车驱动系统和电动汽车。参照图1，电动汽车驱动系统可以包括第一动力总成1、第二动力总成2、第一传动系统3、第二传动系统4和电池系统5。
其中，动力总成1与第一传动系统3连接，第一传动系统3用于传动连接电动汽车的第一侧车轮；第二动力总成2与第二传动系统4连接，第二传动系统4用于传动连接电动汽车的第二侧车轮。需要指出的是，本申请中，第一侧和第二侧中，其中一侧为前侧，另一侧为后侧。即第一传动系统3用于驱动电动汽车的前侧车轮，第二传动系统4用于驱动电动汽车的后侧车轮；或者，第一传动系统3用于驱动电动汽车的后侧车轮，第二传动系统4用于驱动电动汽车的前侧车轮。
第一动力总成1包括发电机和发动机(未示出)。发动机用于驱动发电机产生电能，或者通过第一传动系统3驱动第一侧车轮。发电机用于通过第一传动系统3驱动第一侧车轮，或者将产生的电能输出给电池系统4。
第二动力总成2，用于通过第二传动系统4驱动第二侧车轮。
电池系统5，与发电机和第二动力总成2连接，用于接收发电机输出的电能，并将存储的电能输出给第二动力总成2和/或发电机。
采用上述电动汽车驱动系统，在驱动电动汽车行驶时，第二动力总成2可以通过第二传动系统4驱动第二侧车轮，第一动力总成1中的发电机或者发动机可以通过第一传动系统3驱动第一侧车轮，此时，发电机不仅可以作为发电机使用，也可以作为电动机，实现发电机的复用，因此可以不需要单独为配置电机，也不需要预留配置发电机的空间，从而减少电动汽车的器件的数量，减小电动汽车驱动系统的占用体积，降低电动汽车的成本。
本申请提供的电动汽车驱动系统，可以采用第一动力总成1为电动汽车提供动力，即前驱模式；也可以采用第二动力总成2为电动汽车提供动力，即后驱模式。为了增加整车的输出功率，提升加速性能，还可以采用四驱模式，即第一动力总成1和第二动力总成2共同为电动汽车提供动力。这时，两个动力总成可以是异步、电励磁、同步等形式。电动汽车驱动系统可以在前驱模式、后驱模式与四驱模式之间相互切换。
具体实现时，电动汽车驱动系统还可以包括控制器，该控制器可以用于电动汽车在前驱模式、后驱模式与四驱模式之间相互切换，以及控制电动汽车在各个模式下输出的动力。
在一种可能的实现方式中，第一动力总成1中还包括连接组件。具体地，发动机与发电机之间通过连接组件传动连接；发动机与第一传动系统3之间通过连接组件传动连接；发电机与第一传动系统3之间通过连接组件传动连接。
下面通过具体实施例对本申请提供的电动汽车驱动系统架构作进一步的示例性说明，需要说明的是，本申请实施例是为了更好的解释本发明，但不限制本发明。
示例一、
图2示例性示出了本申请实施例中一种电动汽车驱动系统的结构示意图。参见图2，在本申请实施例中，第一动力总成1可以包括发电机11、发动机12、第一变速器13、第二变速器14、第一离合器15和第二离合器16；第二动力总成2包括电动机17和第三变速器18。其中，第一变速器13、第二变速器14、第一离合器15和第二离合器构成连接组件。
应理解，当第一离合器15结合时，发电机11与发动机12连接，此时，发动机12可以驱动发电机11产生电能，发电机11可以将产生的电能输出给电池系统5；当第二离合器16结合时，发电机11可以与第一传动系统3连接，发电机11可以通过第一传动系统3驱动第一侧车轮；当第一离合器15和第二离合器16结合时，发动机12可以与第一传动系统3连接，发动机12可以通过第一传动系统3驱动第一侧车轮。
具体实现时，第一变速器13的输入轴通过第一离合器15与发动机12连接，第一变速器13的输出轴与发电机11连接；第二变速器14的输入轴通过第二离合器15与发电机11连接，第二变速器14的输出轴与第一传动系统2连接；第三变速器18的输入轴与电动机17连接，第三变速器的输出轴与第二传动系统3连接；第一发电机11和电动机17均与电池系统4连接。
其中，第一变速器13可以是减速器，也可以是增速器，第二变速器14和第三变速器18均为减速器。需要说明的是，第一变速器13、第二变速器14和第三变速器可以为单档变速器，也可以为多档变速器。其中，第一变速器13、第二变速器14和第三变速器可以是定轴轮系，也可以是行星轮系。
具体实现时，第一离合器15可以单向离合器。其中，第二离合器16可以设置在第二变速器14内部，同理第一离合器15也可以设置在第一变速器13内。应理解，本申请中第一离合器15和第二离合器16也可以采用其它具备动力接合和切除的装置进行替换，例如，同步器或者齿套。
下面，结合图2对电动汽车驱动系统的驱动方式进行说明，具体如下：
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求不高，电池系统5可以将存储的电能输出给电动机17，电动机17旋转并通过第三变速器18的输入轴传动至第三变速器18，经过第三变速器18内部的齿轮传动，动力输出给第三变速器18的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图3所示。
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求较高，电池系统5可以将存储的电能输出给电动机17，电动机17旋转并通过第三变速器18的输入轴传动至第三变速器18，经过第三变速器18内部的齿轮传动，动力输出给第三变速器18的输出轴，并通过第二传动系统4供给电动汽车行驶，同时，第二离合器16控制发电机11和第二变速器14接合，电池系统5将存储的电能输出 给发电机11，发电机11作为电动机旋转并通过第二变速器14的输入轴传动至第二变速器14，经过第二变速器14内部的齿轮传动，动力输出给第二变速器14的输出轴，并通过第一传动系统3供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图4所示。
当电动汽车正常行驶时，若电池系统5的剩余容量无法满足电动汽车当前的动力需求、且电动汽车对动力需求不高，第一离合器15控制发动机12与第一变速器13接合，发动机12带动发电机11旋转，发电机11产生电能，并将产生的电能输出给连接的电池系统5。同时，电池系统5将存储的电能输出给电动机17，电动机17旋转并通过第三变速器18的输入轴传动至第三变速器18，经过第三变速器18内部的齿轮传动，动力输出给第三变速器18的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图5所示。
当电动汽车正常行驶时，若电动汽车对动力需求较高或者为实现较高的驱动效率，第一离合器15控制发动机12与第一变速器13接合，第二离合器16控制第一变速器13与第二变速器14接合，发动机12输出的动力依次输入至第一变速器13和第二变速器14，经过第一变速器13和第二变速器14内部的齿轮传动，动力输出给第二变速器14的输出轴，并通过第一传动系统3供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图6所示。
实际使用时，为了消除电动汽车驱动过程的震动，提升驾驶员的驾驶体验，发电机11与第一离合器15之间还可以连有减震装置，例如扭矩减震器或者双质量飞轮。
结合参照图2和图6，在上述的实施例中，发动机和发电机可以同速，此时，参见图7所示，第一动力总成1可以包括：发电机21、发动机22、第一变速器23、第一离合器24和第二离合器25；第二动力总成2可以包括电动机26和第三变速器27。其中，第一变速器23、第一离合器24和第二离合器25构成连接组件。
具体实现时，发动机22通过第一离合器24与发电机21连接；第一变速器23的输入轴通过第二离合器25与发电机21连接，第一变速器23的输出轴与第一传动系统3连接；第三变速器27的输入轴与电动机26连接，第三变速器的输出轴与第二传动系统4连接；第一发电机21和电动机26均与电池系统5连接。
应理解，当第一离合器24结合时，发动机22可以与发电机21连接，此时，发动机22驱动发电机21产生电能，发电机21可以将产生的电能输出给电池系统5；当第二离合器25结合时，发电机21可以与第一传动系统3连接，发电机21可以通过第一传动系统3驱动第一侧车轮；当第一离合器24和第二离合器25结合时，发动机22可以与第一传动系统3连接，此时，发动机22通过第一传动系统3驱动第一侧车轮。
示例二、
图8示例性示出了本申请实施例中一种电动汽车驱动系统的结构示意图。参见图8，在本申请实施例中，第一动力总成1可以包括发电机31、发动机32、第一变速器33、第二变速器34和第一离合器35；第二动力总成2包括电动机36和第三变速器37。
具体实现时，第一变速器33的输入轴通过第一离合器35与发动机32连接，第一变速器33的输出轴与发动机31连接；第二变速器34的输入轴与发电机31连接，第二变速器34的输出轴与第一传动系统3连接；第三变速器37的输入轴与电动机36连接，第三变速器37的输出轴与第二传动系统4连接；第一发电机31和电动机36均与电池系统5连接。
应理解，当第一离合器35结合时，发动机32可以与发电机31连接，此时，发动机32可以驱动发电机31产生电能，发电机31可以将产生的电能输出给电池系统；当同步器使发电机31与第一传动系统3连接时，发电机31可以通过第一传动系统3驱动第一侧车轮；当第一离合器35结合、且同步器使发电机31与第一传动系统3连接时，发动机32可以与第一传动系统连接，此时，发动机32可以通过第一传动系统驱动第一侧车轮。
其中，第一变速器33可以是减速器，也可以是增速器。第三变速器37均为减速器。需要说明的是，第一变速器33和第三变速器37可以为单档变速器，也可以为多档变速器。其中，第一变速器33、第二变速器34和第三变速器可以是定轴轮系，也可以是行星轮系。
需要说明的是，第二变速器34内部设置有同步器，该同步器的结合齿可以设置在第二变速器34的两级变速齿轮上，用于实现第二变速器34处于空挡状态。当第二变速器34处于非空档状态时，发电机31通过第二变速器34与第一传动系统3接合，当第二变速器34处于空挡状态时，切断发电机与第一传动系统3的接合。
具体实现时，第一离合器35可以单向离合器。其中，第一离合器35也可以设置在第一变速器33内。应理解，本申请中第一离合器15也可以采用其它具备动力接合和切除的装置进行替换，例如，同步器或者齿套。
下面，结合图8对电动汽车驱动系统的驱动方式进行说明，具体如下：
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求不高，电池系统5可以将存储的电能输出给电动机36，电动机36旋转并通过第三变速器37的输入轴传动至第三变速器37，经过第三变速器37内部的齿轮传动，动力输出给第三变速器37的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图9所示。
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求较高，电池系统5可以将存储的电能输出给电动机36，电动机36旋转并通过第三变速器37的输入轴传动至第三变速器37，经过第三变速器37内部的齿轮传动，动力输出给第三变速器37的输出轴，并通过第二传动系统4供给电动汽车行驶，同时，电池系统5将存储的电能输出给发电机31，发电机31作为电动机旋转并通过第二变速器34的输入轴传动至第二变速器34，经过第二变速器34内部的齿轮传动，动力输出给第二变速器34的输出轴，并通过第一传动系统3供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图10所示。
当电动汽车正常行驶时，若电池系统5的剩余容量无法满足电动汽车当前的动力需求、且电动汽车对动力需求不高，第一离合器35控制发动机32与第一变速器33接合，发动机32带动发电机31旋转，发电机31产生电能，并将产生的电能输出给连接的电池系统5。同时，电池系统5将存储的电能输出给电动机36，电动机36旋转并通过第三变速器37的输入轴传动至第三变速器37，经过第三变速器37内部的齿轮传动，动力输出给第三变速器37的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图11所示。
当电动汽车正常行驶时，若电动汽车对动力需求较高或者为实现较高的驱动效率，第一离合器35控制发动机32与第一变速器33接合，发动机32输出的动力依次输入至第一变速器33和第二变速器34，经过第一变速器33和第二变速器34内部的齿轮传动，动力输出给第二变速器34的输出轴，并通过第一传动系统3供给电动汽车行驶。具体地，电 动汽车的动力传输路径可参见图12所示。
实际使用时，为了消除电动汽车驱动过程的震动，提升驾驶员的驾驶体验，发电机31与第一离合器35之间还可以连有减震装置，例如扭矩减震器或者双质量飞轮。
结合参照图8和图12，在上述的实施例中，发动机和发电机可以同速，此时，参见图13所示，第一动力总成1包括：发电机41、发动机42、第一变速器43和第一离合器44；第二动力总成2可以包括电动机45和第三变速器46。其中，第一变速器43和第一离合器44构成连接组件。
具体实现时，参见图13所示，发电机41通过第一离合器45与发动机42连接；第一变速器43的输入轴与发电机41连接，第一变速器43的输出轴与第一传动系统3连接；第三变速器46的输入轴与电动机45连接，第三变速器的46输出轴与第二传动系统4连接；第一发电机41和电动机45均与电池系统5连接。
应理解，当第一离合器44结合时，发动机42可以与发电机41连接，此时，发动机42可以驱动发电机41产生电能，发电机41可以将产生的电能输出给电池系统5；当同步器使发电机41与第一传动系统3连接时，发电机41通过第一传动系统3驱动第一侧车轮；当第一离合器44结合、且同步器使发电机41与第一传动系统3连接时，发动机42可以与第一传动系统3连接，此时，发动机42可以通过第一传动系统3驱动第一侧车轮。
示例三、
图14示例性示出了本申请实施例中一种电动汽车驱动系统的结构示意图。参见图14，在本申请实施例中，第一动力总成1可以包括发电机51、发动机52、第一变速器53、第二变速器54和双离合器55；第二动力总成2可以包括电动机56和第三变速器57。其中，第一变速器53、第二变速器54和双离合器55构成连接组件。其中，双离合器55包括三个端口，分别是端口551、端口552和端口553。
具体实现时，第一变速器53的输入轴与发动机52连接，第一变速器53的输出轴与双离合器55的第一输出轴552连接；第二变速器54的输入轴与双离合器55的第二输出轴553连接，第二变速器54的输出轴与第一传动系统2连接；双离合器55的输入端551与发电机51连接；第三变速器57的输入轴与电动机56连接，第三变速器57的输出轴与第二传动系统3连接；第一发电机51和电动机56均与电池系统4连接。
应理解，当双离合器55中的端口552与端口551结合时，发电机51通过第一变速器53与发动机52连接，此时，发动机52可以驱动发电机51产生电能，发电机51可以将产生的电能输出给电池系统5；当双离合器55中的端口552与端口553结合时，发电机51可以通过第一变速器53和第二变速器54与第一传动系统3连接，发电机51可以通过第一传动系统3驱动第一侧车轮；当双离合器55中的端口551和端口553结合时，发动机52可以通过第二变速器54与第一传动系统3连接，发动机52可以通过第一传动系统3驱动第一侧车轮。
其中，第一变速器53可以是减速器，也可以是增速器，第二变速器54和第三变速器57均为减速器。需要说明的是，第一变速器53、第二变速器54和第三变速器57可以为单档变速器，也可以为多档变速器。其中，第一变速器53、第二变速器54和第三变速器57可以是定轴轮系，也可以是行星轮系。
具体实现时，双离合器55可以设置在第一变速器53内。应理解，本申请中双离合器55也可以采用其它具备动力接合和切除的装置进行替换，例如，同步器或者齿套。
需要说明的是，图14所示的电动汽车驱动系统的驱动方式，与图2所示的驱动方式相同，本申请这里不做重复介绍。
实际使用时，为了消除电动汽车驱动过程的震动，提升驾驶员的驾驶体验，发电机51与双离合器55之间还可以连有减震装置，例如扭矩减震器或者双质量飞轮。
结合参照图8和图12，在上述的实施例中，发动机和发电机可以同速，此时，如图15所示，第一动力总成1可以包括：发电机61、发动机62、第一变速器63和双离合器64；第二动力总成2可以包括电动机65和第三变速器66。其中，第一变速器63和双离合器64构成连接组件。其中，双离合器64包括三个端口，分别是端口641、端口642和端口643。
具体实现时，发电机61通过双离合器64与发动机62连接；第一变速器63的输入轴与通过双离合器64与发动机62和发电机61连接，第一变速器63的输出轴与第一传动系统2连接；第三变速器66的输入轴与电动机65连接，第三变速器的66输出轴与第二传动系统4连接；发电机61和电动机65均与电池系统5连接。
应理解，当双离合器64中的端口641和端口642结合时，发电机61与发动机62连接，此时，发动机62可以驱动发电机61产生电能，发电机61可以将产生的电能输出给电池系统5；当双离合器64中的端口643与端口642结合时，发电机61可以通过第一变速器63与第一传动系统3连接，发电机61可以通过第一传动系统3驱动第一侧车轮；当双离合器64中的端口641和端口643结合时，发动机62可以通过第一变速器63与第一传动系统3连接，此时，发动机62可以通过第一传动系统3驱动第一侧车轮。
示例四、
图16示例性示出了本申请实施例中一种电动汽车驱动系统的结构示意图。参见图16，在本申请实施例中，第一动力总成1可以包括发电机71、发动机72、第一变速器73、第二变速器74和同步器75；第二动力总成2可以包括电动机76和第三变速器77。其中，第一变速器73、第二变速器74和同步器75构成连接组件。
具体实现时，同步器75的结合齿分别与第一变速器73的输出轴和第二变速器74的输入轴连接，同步器的齿毂与发电机11连接；第一变速器73的输入轴与发动机72连接；第二变速器74的输入轴与发电机71连接，第二变速器74的输出轴与第一传动系统3连接；第三变速器77的输入轴与电动机76连接，第三变速器的输出轴与第二传动系统4连接；第一发电机71和电动机76均与电池系统5连接。
应理解，当同步器75使发动机72与发电机71连接时，发动机72可以驱动发电机71产生电能，发电机71可以将产生的电能输出给电池系统5；当同步器75使发电机71与第一传动系统3连接时，发电机71通过第一传动系统3驱动第一侧车轮。
其中，第一变速器73可以是减速器，也可以是增速器，第二变速器74和第三变速器77均为减速器。需要说明的是，第一变速器73、第二变速器74和第三变速器77可以为单档变速器，也可以为多档变速器。其中，第一变速器73、第二变速器74和第三变速器77可以是定轴轮系，也可以是行星轮系。
下面，结合图16对电动汽车驱动系统的驱动方式进行说明，具体如下：
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求不高，电池系统5可以将存储的电能输出给电动机76，电动机76旋转并通过第三变速器77的输入轴传动至第三变速器77，经过第三变速器77内部的齿轮 传动，动力输出给第三变速器77的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图17所示。
当电动汽车正常行驶时，若电池系统5的剩余容量可以满足电动汽车当前的动力需求、且电动汽车对动力需求较高，电池系统5可以将存储的电能输出给电动机76，电动机76旋转并通过第三变速器77的输入轴传动至第三变速器77，经过第三变速器77内部的齿轮传动，动力输出给第三变速器77的输出轴，并通过第二传动系统4供给电动汽车行驶，同时，电池系统5将存储的电能输出给发电机71，同步器75与第二变速器74内部的齿轮传动，发电机71作为电动机旋转并通过第二变速器74的输入轴传动至第二变速器74，经过第二变速器74内部的齿轮传动，动力输出给第二变速器74的输出轴，并通过第一传动系统3供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图18所示。
当电动汽车正常行驶时，若电池系统5的剩余容量无法满足电动汽车当前的动力需求、且电动汽车对动力需求不高，同步器75控制发动机72与发电机71接合，发动机72带动发电机71旋转，发电机71产生电能，并将产生的电能输出给连接的电池系统5。同时，电池系统5将存储的电能输出给电动机76，电动机76旋转并通过第三变速器77的输入轴传动至第三变速器77，经过第三变速器77内部的齿轮传动，动力输出给第三变速器77的输出轴，并通过第二传动系统4供给电动汽车行驶。具体地，电动汽车的动力传输路径可参见图19所示。
实际使用时，为了消除电动汽车驱动过程的震动，提升驾驶员的驾驶体验，发电机71与同步器75之间还可以连有减震装置，例如扭矩减震器或者双质量飞轮。
结合参照图16至图19，在上述的实施例中，发动机和发电机可以同速，此时，参见图20所示，第一动力总成1可以包括发电机81、发动机82、第一变速器83和同步器84；第二动力总成2包括电动机85和第三变速器86。其中，第一变速器86和同步器84构成连接组件。
具体实现时，同步器84的结合齿分别与第一变速器83的输入轴和发动机82连接，同步器84的齿毂与发电机81连接；第一变速器83的输入轴与发电机81连接，第一变速器83的输出轴与第一传动系统3连接；第三变速器86的输入轴与电动机85连接，第三变速器86的输出轴与第二传动系统3连接；第一发电机81和电动机85均与电池系统5连接。
应理解，当同步器84使发动机82与发电机81连接时，发动机82可以驱动发电机81产生电能，发电机81可以将产生的电能输出给电池系统5；当同步器84使发电机81与第一传动系统3连接时，发电机81可以通过第一传动系统3驱动第一侧车轮。
需要说明的是，图20所示的电动汽车驱动系统的驱动方式，与图16所示的驱动方式相同，本申请这里不做重复介绍。
本申请还提供了一种电动汽车，该电动汽车具有车轮、第一侧车轮、第二侧车轮以及上述任一方案中的电动汽车驱动系统。电动汽车中的动力总成在驱动电动汽车行驶时，发电机可以作为电动机驱动电动汽车，实现了发电机的复用，从而无需单独再配置一个电机，减小了电动汽车驱动系统的器件数量，降低电动汽车的驱动成本，并增大乘客可利用空间。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (13)

  1. 一种电动汽车驱动系统，其特征在于，包括：第一动力总成、第二动力总成、第一传动系统、第二传动系统和电池系统；其中：
    所述第一动力总成与所述第一传动系统连接，所述第一传动系统用于传动连接所述电动汽车的第一侧车轮；
    所述第二动力总成与所述第二传动系统连接，所述第二传动系统用于传动连接所述电动汽车的第二侧车轮；
    所述第一动力总成包括发电机和发动机，所述发动机用于驱动所述发电机产生电能，或者通过所述第一传动系统驱动所述第一侧车轮；所述发电机用于通过所述第一传动系统驱动所述第一侧车轮，或者将产生的电能输出给所述电池系统；
    所述第二动力总成，用于通过所述第二传动系统驱动所述第二侧车轮；
    所述电池系统，与所述发电机和所述第二动力总成连接，用于接收所述发电机输出的电能，且将存储的电能输出给所述第二动力总成和/或所述发电机。
  2. 如权利要求1所述的电动汽车驱动系统，其特征在于，所述第一动力总成还包括：连接组件；
    所述发动机与所述发电机之间通过所述连接组件传动连接；
    所述发动机与所述第一传动系统之间通过所述连接组件传动连接；
    所述发电机与所述第一传动系统之间通过所述连接组件传动连接。
  3. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器、第二变速器、第一离合器和第二离合器；
    所述第一变速器的输入轴通过所述第一离合器与所述发动机连接，所述第一变速器的输出轴与所述发电机连接；
    所述第二变速器的输入轴通过所述第二离合器与所述发电机连接，所述第二变速器的输出轴与所述第一传动系统连接；
    当所述第一离合器结合时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述第二离合器结合时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述第一离合器和所述第二离合器结合时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  4. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器、第一离合器和第二离合器；
    所述发电机通过所述第一离合器与所述发动机连接；
    所述第一变速器的输入轴通过所述第二离合器与所述发电机连接，所述第一变速器的输出轴与所述第一传动系统连接；
    当所述第一离合器结合时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述第二离合器结合时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述第一离合器和所述第二离合器结合时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  5. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器、第二变速器和第一离合器；
    所述第一变速器的输入轴通过所述第一离合器与所述发动机连接，所述第一变速器的输出轴与所述发电机连接；
    所述第二变速器的输入轴与所述发电机连接，所述第二变速器的输出轴与所述第一传动系统连接；
    所述第二变速器中包括同步器；
    当所述第一离合器结合时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述同步器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述第一离合器结合、且所述同步器使所述发电机与所述第一传动系统连接时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  6. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器和第一离合器；
    所述发电机通过所述第一离合器与所述发动机连接；
    所述第一变速器的输入轴与所述发电机连接，所述第一变速器的输出轴与所述第一传动系统连接；
    所述第一变速器中包括同步器；
    当所述第一离合器结合时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述同步器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述第一离合器结合、且所述同步器使所述发电机与所述第一传动系统连接时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  7. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器、第二变速器和双离合器；
    所述第一变速器的输入轴通过所述双离合器与所述发动机连接，所述第一变速器的输出轴与所述发电机连接；
    所述第二变速器的输入轴通过所述双离合器与所述第一变速器和所述发动机连接，所述第二变速器的输出轴与所述第一传动系统连接；
    当所述双离合器使所述发电机与所述发动机连接时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述双离合器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述双离合器使所述发动机与所述第一传动系统连接时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  8. 如权利要求1所述的电动汽车驱动系统，其特征在于，所述连接组件还包括：第一变速器和双离合器；
    所述发电机通过所述双离合器与所述发动机连接；
    所述第一变速器的输入轴通过所述双离合器与所述发动机和所述发电机连接，所述第一变速器的输出轴与所述第一传动系统连接；
    当所述双离合器使所述发电机与所述发动机连接时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述双离合器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮；
    当所述双离合器使所述发动机与所述第一传动系统连接时，所述发动机通过所述第一传动系统驱动所述第一侧车轮。
  9. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器、第二变速器和同步器；
    所述同步器的结合齿分别与所述第一变速器的输出轴和所述第二变速器的输入轴连接，所述同步器的齿毂与发电机连接；
    所述第一变速器的输入轴与所述发动机连接；
    所述第二变速器的输入轴与所述发电机连接，所述第二变速器的输出轴与所述第一传动系统连接；
    当所述同步器使所述发动机与所述发电机连接时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述同步器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮。
  10. 如权利要求2所述的电动汽车驱动系统，其特征在于，所述连接组件包括：第一变速器和同步器；
    所述同步器的结合齿分别与所述第一变速器的输入轴和所述发动机连接，所述同步器的齿毂与所述发电机连接；
    所述第一变速器的输入轴与所述发电机连接，所述第一变速器的输出轴与所述第一传动系统连接；
    当所述同步器使所述发动机与所述发电机连接时，所述发动机驱动所述发电机产生电能，所述发电机将产生的电能输出给所述电池系统；
    当所述同步器使所述发电机与所述第一传动系统连接时，所述发电机通过所述第一传动系统驱动所述第一侧车轮。
  11. 如权利要求1-10中任一项所述的电动汽车驱动系统，其特征在于，所述第二动力总成包括：电动机和第三变速器；
    所述电动机与所述电池系统连接；所述第三变速器的输入轴与所述电动机连接，所述第三变速器的输出轴与所述第二传动系统连接。
  12. 如权利要求3-11中任一项所述的电动汽车驱动系统，其特征在于，第一变速器包括：减速器或者增速器。
  13. 一种电动汽车，其特征在于，包括车身、第一侧车轮、第二侧车轮以及如权利要求1-12任一项所述的电动汽车驱动系统。
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