CN107458207B - Automobile hybrid power system and application method - Google Patents

Automobile hybrid power system and application method Download PDF

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Publication number
CN107458207B
CN107458207B CN201710622156.7A CN201710622156A CN107458207B CN 107458207 B CN107458207 B CN 107458207B CN 201710622156 A CN201710622156 A CN 201710622156A CN 107458207 B CN107458207 B CN 107458207B
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Prior art keywords
motor
clutch
engine
transmission
mode
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CN107458207A (en
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张恒先
周之光
王庆来
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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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
    • B60K6/24—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 combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • 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
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses an automobile hybrid power system and an application method thereof, belonging to the field of automobiles. The system comprises: the device comprises an engine, a battery, a first speed changing assembly, a first motor, a first clutch, a second motor and a second speed changing assembly; the engine is in transmission connection with a first transmission end of the first speed changing assembly through a transmission shaft; the second transmission end of the first speed changing assembly is in transmission connection with the first motor, the first clutch and the first transmission end of the second speed changing assembly in sequence through a transmission shaft; the third transmission end of the first speed changing assembly is in transmission connection with the second clutch, the second motor and the second transmission end of the second speed changing assembly in sequence through a transmission shaft; the third transmission end of the second speed changing assembly is in transmission connection with the wheel through a transmission shaft; the battery provides electric energy for first motor and second motor, and first motor and second motor pass through the cable parallel connection. The system has simple structure, can realize multiple modes, reduces energy consumption, avoids the impact of the automobile and ensures that the automobile has excellent comfort.

Description

Automobile hybrid power system and application method
Technical Field
The invention relates to the field of automobiles, in particular to an automobile hybrid power system and an application method thereof.
Background
The traditional automobile relies on burning fossil fuel (such as gasoline, diesel oil and the like) to provide power for an engine, and the exhaust gas of the traditional automobile can pollute the environment and does not meet the requirements of energy conservation and environmental protection. Therefore, it is necessary to provide power to an automobile by replacing fossil fuel with new pollution-free energy such as electric energy. However, the pure electric vehicle using electric energy as energy has short endurance mileage, incomplete supporting facilities and difficult wide application in a short period. The combination of fossil fuel and electric energy can alleviate the crisis of fossil fuel and overcome the defects of pure electric vehicles, so that the hybrid power system for vehicles capable of utilizing fossil fuel and electric energy is necessary.
The prior art provides an automotive hybrid system, comprising: the engine, clutch, variable speed subassembly, motor, battery. The engine is in transmission connection with the motor through the clutch, the motor is in transmission connection with the speed change assembly through the coupler, and the speed change assembly is in transmission connection with a transmission shaft of the wheel. The speed change assembly can transmit power to the wheels, and can adjust the transmission ratio (the ratio of the angular speed or the rotating speed of the initial driving wheel to the final driven wheel). The battery is a chargeable and dischargeable battery and is electrically connected with the motor through a cable. When the system is applied, the system is in a pure electric mode and a hybrid power mode by adjusting the disconnection and connection states of the clutch. When the clutch is disconnected, the electric-only mode is adopted, the motor is powered by the battery, and the motor transmits power to the gear assembly and the wheels so as to drive the wheels to rotate. When the clutch is engaged, a hybrid mode is achieved, wherein the engine and the motor simultaneously provide power, and the power is transmitted to the wheels through the gear assembly to drive the wheels to rotate.
The inventor finds that the prior art has at least the following problems:
in the automobile hybrid power system provided by the prior art, when the automobile hybrid power system works in a hybrid power mode, the clutch cannot be disconnected, so that the engine and the motor cannot be decoupled, and the automobile can be impacted when power is transmitted between the engine and the motor, so that the comfort of passengers is influenced. And the rotating speed of the engine can only change along with the change of the rotating speed of the wheels, so that the engine cannot always work in a rotating speed area with the lowest oil consumption, and the utilization rate of energy is low.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide an automobile hybrid power system which is easy to decouple or couple an engine and a motor, difficult to impact an automobile and high in energy utilization efficiency and an application method thereof. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a hybrid power system for a vehicle, where the system includes: an engine, a battery;
the system further comprises: the first speed changing assembly, the first motor, the first clutch, the second motor and the second speed changing assembly are arranged on the first transmission shaft;
the engine is in transmission coupling with the first transmission end of the first speed change assembly through a transmission shaft;
the second transmission end of the first speed changing assembly is in transmission connection with the first motor, the first clutch and the first transmission end of the second speed changing assembly in sequence through a transmission shaft;
a third transmission end of the first speed changing assembly is in transmission connection with the second clutch, the second motor and a second transmission end of the second speed changing assembly in sequence through a transmission shaft;
the third transmission end of the second speed changing assembly is in transmission connection with the wheel through a transmission shaft;
the battery provides electric energy for the first motor and the second motor, and the first motor and the second motor are connected in parallel through a cable.
Specifically, preferably, the first transmission assembly includes: the first driven gear and the second driven gear are meshed with the first driving gear simultaneously;
the first driving gear, the first driven gear and the second driven gear are in transmission connection with the engine, the first motor and the second clutch through transmission shafts respectively.
Specifically, preferably, the second transmission assembly includes: the first driving gear, the second driving gear, the third driven gear, the fourth driving gear and the fourth driven gear;
the second driving gear and the third driving gear are in transmission connection with the first clutch and the second motor through transmission shafts respectively, and the second driving gear and the third driving gear are meshed with the third driven gear simultaneously;
the third driven gear is coaxially connected with the fourth driving gear through a transmission shaft, the fourth driving gear is meshed with the fourth driven gear, and the fourth driven gear is in transmission connection with the wheel through the transmission shaft.
Specifically, preferably, the system further includes: an inverter;
one end of the inverter is electrically connected with the battery through a cable, and the other end of the inverter is connected with the first motor and the second motor which are connected in parallel.
In a second aspect, an embodiment of the present invention further provides an application method of the system in an automobile drive, where the application method of the system includes: electric-only mode, engine-only mode, hybrid drive mode, range-extending mode, and energy recovery mode.
Specifically, preferably, the electric-only mode includes: a single motor mode and a dual motor mode;
in the single-motor mode, the engine does not work, the first clutch and the second clutch are disconnected, the battery provides electric energy for the second motor, and the wheels are driven to rotate by the second motor;
in the dual-motor mode, the engine is not operated, one of the first clutch and the second clutch is selected to be connected, the other clutch is disconnected, the battery supplies electric energy to the first motor and the second motor, and the wheels are driven to rotate by the first motor and the second motor together.
Specifically, preferably, in the engine-only mode, the engine is operated, the first electric machine and the second electric machine are not operated, one of the first clutch and the second clutch is selected to be engaged, the other is selected to be disengaged, and the wheels are driven to rotate by the engine.
Specifically, preferably, in the hybrid drive mode, the engine is operated, the first clutch is engaged, the second clutch is disengaged, the engine transmits power to the first electric machine, and meanwhile, the battery supplies electric energy to the first electric machine and the second electric machine, and the wheels are driven to rotate by the engine, the first electric machine and the second electric machine together;
or in the hybrid driving mode, the engine works, the first clutch is disconnected, the second clutch is connected, the engine transmits power to the second motor, meanwhile, the battery provides electric energy for the first motor and the second motor, and the wheels are driven to rotate by the engine, the first motor and the second motor together.
Specifically, in the range extending mode, the engine is operated, the first clutch and the second clutch are both disconnected, the second motor is powered by the engine, the first motor and the battery, and the wheels are driven to rotate by the second motor.
Specifically, preferably, in the energy recovery mode, the engine is not operated, the first clutch and the second clutch are both disconnected, the wheels provide mechanical energy for the second electric machine, and the second electric machine converts the mechanical energy into electric energy and stores the electric energy in the battery;
or, the engine does not work, the first clutch is connected, the second clutch is disconnected, the wheels simultaneously provide mechanical energy for the first motor and the second motor, and the first motor and the second motor respectively convert the obtained mechanical energy into electric energy and store the electric energy in the battery.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the automobile hybrid power system provided by the embodiment of the invention, the engine is in transmission connection with the first transmission end of the first speed changing assembly, the second transmission end of the first speed changing assembly is in transmission connection with the first motor, the first clutch and the first transmission end of the second speed changing assembly in sequence through the transmission shaft, the third transmission end is in transmission connection with the second clutch, the second motor and the second transmission end of the second speed changing assembly in sequence through the transmission shaft, and the third transmission end of the second speed changing assembly is in transmission connection with the wheels through the transmission shaft, so that the system can conveniently realize various modes such as a pure electric mode, a pure engine mode, a hybrid driving mode, a range extending mode, an energy recovery mode and the like in automobile driving, the engine and the battery are efficiently utilized, and the energy consumption is reduced. In the multiple modes, the first clutch or the second clutch can be disconnected, so that the decoupling of power is facilitated, the impact of an automobile using the system is avoided during power transmission, and the automobile has excellent comfort. And through the cooperation of first variable speed subassembly and second variable speed subassembly, be convenient for realize many speed ratios. The automobile hybrid power system provided by the embodiment of the invention also has the characteristic of simple structure, and is suitable for large-scale popularization and application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of an automotive hybrid powertrain system provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of energy transfer in a single motor mode for a hybrid powertrain system for a vehicle, according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the energy transfer of the hybrid powertrain system of the vehicle in a first hybrid driving mode according to the present invention;
FIG. 4 is a schematic diagram illustrating energy transfer in a second hybrid driving mode of the hybrid powertrain of the vehicle, according to the exemplary embodiment of the present invention;
FIG. 5 is a schematic diagram of energy transfer of a hybrid powertrain system of a vehicle in a range extended mode, according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an energy transfer system of a hybrid vehicle in a first energy recovery mode according to an embodiment of the present invention.
Wherein the reference numerals denote:
1 an engine of a vehicle, wherein the engine comprises a power unit,
2, a battery is arranged in the container,
3 a first speed-changing assembly for changing the speed of the engine,
301 of the first drive gear is provided with a first drive gear,
302 a first driven gear to be driven by the first motor,
303 a second driven gear in the form of a second driven gear,
4 a first motor is arranged on the first side of the motor,
5 a first clutch to be engaged with the first clutch,
6 of the second clutch, and 6 of the second clutch,
7. a second motor for driving the motor to rotate,
8 of the second speed-change assembly is,
801 a second driving gear for driving the second motor,
802 a third drive gear in the form of a third drive gear,
803 a third driven gear which is driven by the third driven gear,
804 a fourth driving gear in the form of a fourth driving gear,
805 a fourth driven gear which is driven by the first driven gear,
9 the wheels of the vehicle are arranged on the front wheel,
10 inverter.
In the drawings, arrows with broken lines indicate the direction of transmission of electric energy, and arrows with solid lines indicate the direction of transmission of mechanical energy or power.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art. In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In a first aspect, an embodiment of the present invention provides a hybrid power system for a vehicle, as shown in fig. 1, the system includes: the hybrid transmission comprises an engine 1, a battery 2, a first speed changing assembly 3, a first motor 4, a first clutch 5, a second clutch 6, a second motor 7 and a second speed changing assembly 8.
The engine 1 is drivingly coupled to a first drive end of the first transmission assembly 3 via a driveshaft.
The second transmission end of the first speed changing assembly 3 is in transmission connection with the first motor 4, the first clutch 5 and the first transmission end of the second speed changing assembly 8 in sequence through a transmission shaft.
The third transmission end of the first speed changing assembly 3 is in transmission connection with the second clutch 6, the second motor 7 and the second transmission end of the second speed changing assembly 8 in sequence through a transmission shaft.
The third transmission end of the second transmission assembly 8 is in transmission connection with the wheels 9 through a transmission shaft.
The battery 2 supplies electric power to the first motor 4 and the second motor 7, and the first motor 4 and the second motor 7 are connected in parallel through a cable.
The following description is given of the operating principle of the hybrid system for an automobile provided by the embodiment of the invention:
the application method of the automobile hybrid power system comprises the following steps: electric-only mode, engine-only mode, hybrid drive mode, range-extending mode, and energy recovery mode.
In the above modes, the operating states of the engine 1, the first motor 4, and the second motor 7 are controlled by a program.
The pure electric mode includes: single motor mode and dual motor mode.
In the single-motor mode, as shown in fig. 2, the engine 1 is deactivated, and both the first clutch 5 and the second clutch 6 are disengaged to cut off power transmission between the first motor 4 and the second transmission assembly 8, and between the engine 1 and the second motor 7. The battery 2 is used for supplying electric energy to the second electric machine 7 only, so the first electric machine 4 does not work, and the power of the second electric machine 7 is transmitted to the wheels 9 by the transmission shaft and the second speed changing assembly 8 to drive the wheels 9 to rotate.
In the dual motor mode, the engine 1 is not operated, the first clutch 5 is engaged, the second clutch 6 is disengaged to cut off power transmission between the second motor 7 and the engine 1, the first motor 4 and the second motor 7 are supplied with electric energy by the battery 2, the first motor 4 transmits power to the second speed change assembly 8 through a transmission shaft, and is coupled with the power transmitted to the second speed change assembly 8 by the second motor 7 through the transmission shaft, and then the power is transmitted to the wheels 9 by the second speed change assembly 8 to drive the wheels 9 to rotate.
Alternatively, in the dual motor mode, the engine 1 is not operated, the first clutch 5 is disconnected to cut off the power transmission between the engine 1 and the first motor 4 and the wheels 9, and the second clutch 6 is engaged. The battery 2 supplies electric energy to the first electric machine 4 and the second electric machine 7, the first electric machine 4 transmits power to the second electric machine 7 through the transmission shaft, the first speed changing assembly 3 and the second clutch 6 and is coupled with the power of the second electric machine 7, and the second electric machine 7 transmits power to the wheels 9 through the transmission shaft and the second speed changing assembly 8 so as to drive the wheels 9 to rotate. Namely, the first motor 4 and the second motor 7 drive the wheel 9 to rotate together.
In the engine only mode, the engine 1 is operated, the first motor 4 and the second motor 7 are not operated, one of the first clutch 5 and the second clutch 6 is selected to be connected, the other one is disconnected, and the wheels 9 are driven to rotate by the engine 1.
In the first hybrid driving mode, as shown in fig. 3, the engine 1 is operated, the first clutch 5 is engaged, and the second clutch 6 is disengaged to cut off the power transmission between the engine 1 and the second motor 7. The battery 2 supplies electric power to the first electric motor 4 and the second electric motor 7. The engine 1 transmits power to the first motor 4 through the transmission shaft and the first speed changing assembly 3, and is coupled with the power of the first motor 4, and the first motor 4 transmits power to the first transmission end of the second speed changing assembly 8 through the transmission shaft and the first clutch 5. The second electric machine 7 transmits power to a second transmission end of the second transmission assembly 8 through a transmission shaft, and the second electric machine and the second transmission end are coupled at the second transmission assembly 8 and transmitted to the wheels 9 through a third transmission end and the transmission shaft to drive the wheels 9 to rotate. Namely, the engine 1, the first motor 4 and the second motor 7 drive the wheels 9 to rotate together.
Alternatively, in the second hybrid drive mode, as shown in fig. 4, the engine 1 is operated and the first clutch 5 is disengaged to cut off the power transmission between the first electric machine 4 and the second transmission assembly 8. The second clutch 6 is engaged and the engine 1 can transmit power to the second electric machine 7. The battery 2 supplies electric power to the first electric motor 4 and the second electric motor 7. The first electric machine 4 transmits power to the first transmission assembly 3 through a propeller shaft and is coupled with the power transmitted from the engine 1 to the first transmission assembly 3, and then the coupled power is transmitted to the second electric machine 7 through the propeller shaft and the second clutch 6, and the second electric machine 7 transmits power to the wheels 9 through the propeller shaft and the second transmission assembly 8 to drive the wheels 9 to rotate. Namely, the engine 1, the first motor 4 and the second motor 7 drive the wheels 9 to rotate together.
In the range-extending mode, as shown in fig. 5, the engine 1 is operated, and both the first clutch 5 and the second clutch 6 are disengaged to cut off the power transmission between the first electric machine 4 and the second transmission assembly 8, and between the engine 1 and the second electric machine 7. The battery 2 provides electric energy for the second electric machine 7, the engine 1 provides mechanical energy for the first electric machine 4, the first electric machine 4 converts the mechanical energy into electric energy and supplies power for the second electric machine 7, and redundant electricity can be stored in the battery 2. The second motor 7 transmits power to the wheels 9 through a transmission shaft and a second speed change assembly 8 to drive the wheels 9 to rotate.
In the energy recovery mode, as shown in fig. 6, the engine 1 is not operated, and both the first clutch 5 and the second clutch 6 are disengaged to cut off the power transmission between the engine 1 and the first motor 4 and the second transmission assembly 8, and between the engine 1 and the second motor 7. The wheels 9 provide mechanical energy to the second electric machine 7 through the propeller shaft and the second transmission assembly 8, and the second electric machine 7 converts the mechanical energy into electric energy and stores the electric energy in the battery 2.
Alternatively, in the energy recovery mode, the engine 1 is not operated, the first clutch 5 is engaged, and the second clutch 6 is disengaged to cut off the power transmission between the engine 1 and the second motor 7. The wheels 9 simultaneously provide mechanical energy for the first electric machine 4 and the second electric machine 7 through the transmission shaft and the second speed changing assembly 8, and the mechanical energy is converted into electric energy by the first electric machine 4 and the second electric machine 7 respectively and stored in the battery 2.
According to the automobile hybrid power system provided by the embodiment of the invention, the engine 1 is in transmission connection with the first transmission end of the first speed changing assembly 3, the second transmission end of the first speed changing assembly 3 is in transmission connection with the first transmission end of the first motor 4, the first clutch 5 and the second transmission end of the second speed changing assembly 8 in sequence through the transmission shaft, the third transmission end is in transmission connection with the second transmission end of the second clutch 6, the second motor 7 and the second speed changing assembly 8 in sequence through the transmission shaft, and the third transmission end of the second speed changing assembly 8 is in transmission connection with the wheels 9 through the transmission shaft, so that the system can realize various modes such as a pure electric mode, a pure engine mode, a hybrid driving mode, a range extending mode, an energy recovery mode and the like in automobile driving, the engine 1 and the battery 2 are efficiently utilized, and the energy consumption is reduced. In the multiple modes, the first clutch 5 or the second clutch 6 can be disconnected, so that the decoupling of power is facilitated, the impact of an automobile using the system is avoided during power transmission, and the automobile has excellent comfort. And multiple speed ratios can be conveniently realized through the cooperation of the first speed changing assembly 3 and the second speed changing assembly 8. The automobile hybrid power system provided by the embodiment of the invention also has the characteristic of simple structure, and is suitable for large-scale popularization and application.
The first transmission assembly 3 and the second transmission assembly 8 mainly realize speed change through cooperation of a plurality of gears, and on the premise that power transmission and speed change are easily realized based on simple structure, as shown in fig. 1, the first transmission assembly 3 includes: a first driving gear 301, and a first driven gear 302 and a second driven gear 303 which are engaged with the first driving gear 301; the first driving gear 301, the first driven gear 302 and the second driven gear 303 are respectively in transmission connection with the engine 1, the first motor 4 and the second clutch 6 through transmission shafts.
Namely, the first driving gear 301, the first driven gear 302 and the second driven gear 303 are respectively used as the first transmission end, the second transmission end and the third transmission end of the first speed changing assembly 3. When the first driving gear 301 rotates, power is transmitted to the first driven gear 302 and the second driven gear 303 at the same time, and the first driven gear 302 and the second driven gear 303 transmit power to the first motor 4 and the second clutch 6, respectively. When the first driven gear 302 or the second driven gear 303 rotates, power is transmitted to the first driving gear 301, the second driven gear 303, or the first driven gear 302 in this order. When the first driven gear 302 and the second driven gear 303 rotate simultaneously, the power transmitted to the first driving gear 301 is coupled.
As shown in fig. 1, the second transmission assembly 8 includes: a second driving gear 801, a third driving gear 802, a third driven gear 803, a fourth driving gear 804, and a fourth driven gear 805; the second driving gear 801 and the third driving gear 802 are respectively in transmission connection with the first clutch 5 and the second motor 7 through transmission shafts, and the second driving gear 801 and the third driving gear 802 are simultaneously meshed with the third driven gear 803; the third driven gear 803 is coaxially connected with the fourth driving gear 804 through a transmission shaft, the fourth driving gear 804 is meshed with a fourth driven gear 805, and the fourth driven gear 805 is in transmission connection with the wheel 9 through the transmission shaft.
That is, the second driving gear 801, the third driving gear 802 and the fourth driven gear 805 are respectively a first transmission end, a second transmission end and a third transmission end of the second transmission assembly 8.
When one or both of the second driving gear 801 and the third driving gear 802 rotate simultaneously, power is transmitted to the third driven gear 803, the fourth driving gear 804, and the fourth driven gear 805 in this order, and the wheel 9 is driven to rotate. When the wheel 9 rotates, the wheel 9 transmits power to the fourth driven gear 805, the fourth driving gear 804, and the third driven gear 803 in sequence, and the third driven gear 803 simultaneously transmits power to the second driving gear 801 and the third driving gear 802.
The diameters of the gears in the first speed changing assembly 3 and the second speed changing assembly 8 are different, and multiple speed ratios are realized through meshing and transmission of different gears.
In order to facilitate the battery 2 to supply alternating current to the first motor 4 and the second motor 7, so that the first motor 4 and the second motor 7 work normally, as shown in fig. 1, the hybrid power system of the vehicle according to the embodiment of the present invention further includes: an inverter 10; one end of the inverter 10 is electrically connected to the battery 2 via a cable, and the other end is connected to the first motor 4 and the second motor 7 connected in parallel.
The provision of the inverter 10 also facilitates the processing of the electrical energy generated by the first electrical machine 4 or the second electrical machine 7 for supply to the second electrical machine 7 or the first electrical machine 4 for normal operation thereof or for storage in the battery 2.
In a second aspect, an embodiment of the present invention provides an application method of the above system in an automobile drive, where the application method of the system includes: electric-only mode, engine-only mode, hybrid drive mode, range-extending mode, and energy recovery mode.
In the above application, the application modes of the automobile hybrid system can be different by controlling the disconnection and the connection of the first clutch 5 and the second clutch 6, and the energy of the engine 1 or the electric energy provided by the battery 2 can be fully utilized through the different application modes to reduce the energy consumption and the cost.
In the pure electric mode, only electric energy is consumed, and the wheels 9 are driven to rotate by the first motor 4 and/or the second motor 7. The pure electric mode includes: single motor mode and dual motor mode.
As shown in fig. 2, in the single-motor mode, the engine 1 is not operated, the first clutch 5 and the second clutch 6 are both disconnected, and the battery 2 supplies electric energy to the second motor 7 to drive the wheels 9 to rotate through the second motor 7.
Specifically, by disengaging the second clutch 6, the power transmission between the engine 1 and the second motor 7 is cut off. By disconnecting the first clutch 5, the power transmission between the first motor 4 and the second speed changing assembly 8 is cut off, and the first motor 4 is prevented from driving the engine 1 to idle through the first driven gear 302 and the first driving gear 301. The inverter 10 of the battery 2 only supplies electric energy to the second electric motor 7, and the second electric motor 7 transmits power to the third driving gear 802, the third driven gear 803, the fourth driving gear 804 and the fourth driven gear 805 in sequence to drive the wheels 9 to rotate.
In the mode, the wheels 9 are driven to rotate only by the second motor 7, so that the driving of the engine 1 and the first motor 4 is avoided, and the influence of the rotational inertia on acceleration is reduced. However, since no clutch is provided between the second electric machine 7 and the wheels 9, it is difficult to change the gear when the automobile is running in this mode.
When a large driving force is required for running and the gear can be changed, the dual-motor mode can be adopted. In the dual-motor mode, the engine 1 is not operated, one of the first clutch 5 and the second clutch 6 is selected to be connected, the other one is disconnected, the battery 2 supplies electric energy to the first motor 4 and the second motor 7, and the wheels 9 are driven to rotate through the first motor 4 and the second motor 7. Two examples of dual-motor modes are given in detail below:
as a first example: the engine 1 is not operated, the first clutch 5 is connected, the second clutch 6 is disconnected, the battery 2 supplies electric energy to the first motor 4 and the second motor 7, and the first motor 4 and the second motor 7 jointly drive the wheels 9 to rotate.
Specifically, the battery 2 supplies electric energy to the first motor 4 and the second motor 7 through the inverter 10, the first motor 4 transmits power to the first clutch 5, the second driving gear 801 and the third driven gear 803 in sequence, the second motor 7 transmits power to the third driving gear 802 and the third driven gear 803 in sequence, that is, the power transmitted from the first motor 4 and the second motor 7 to the third driven gear 803 is coupled, and then the power is transmitted to the fourth driving gear 804, the fourth driven gear 805 and the wheel 9 in sequence by the third driven gear 803 so as to drive the wheel 9 to rotate.
However, in this mode, the first electric machine 4 easily transmits power to the engine 1 to idle, which affects the service life of the engine 1, and therefore a clutch, or other engageable or disengageable member, may be provided between the first transmission assembly 3 and the first electric machine 4 to prevent the engine 1 from idling.
As a second example: the engine 1 does not work, the first clutch 5 is disconnected, the second clutch 6 is connected, the battery 2 supplies electric energy to the first motor 4 and the second motor 7, and the first motor 4 and the second motor 7 jointly drive the wheels 9 to rotate.
Specifically, the battery 2 supplies power to the first motor 4 and the second motor 7 through the inverter 10, the first motor 4 sequentially transmits power to the first driven gear 302, the first driving gear 301, the second driven gear 303, the second clutch 6, the second motor 7, and is coupled with the power of the second motor 7, and then the second motor 7 sequentially transmits the coupled power to the third driving gear 802, the third driven gear 803, the fourth driving gear 804, the fourth driven gear 805, and the wheel 9, namely, the first motor 4 and the second motor 7 jointly drive the wheel 9 to rotate.
However, in this mode, the first motor 4 easily transmits power to the engine 1 to cause idling, which affects the service life of the engine 1. A clutch, or other engageable or disengageable component, may be provided between the engine 1 and the first transmission assembly 3 to avoid idling of the engine 1.
The engine only mode is that the wheels 9 are driven to rotate only by the engine 1. The engine 1 generally operates by heat release from combustion of fossil fuel or the like, and therefore this mode can also be referred to as a pure fuel mode.
In the engine only mode, the engine 1 is operated, the first motor 4 and the second motor 7 are not operated, one of the first clutch 5 and the second clutch 6 is selected to be connected, the other one is disconnected, and the wheels 9 are driven to rotate by the engine 1.
Specifically, when the first clutch 5 is engaged and the second clutch 6 is disengaged, the engine 1 transmits power to the first driving gear 301, the first driven gear 302, the first motor 4 (the first motor 4 is idling), the first clutch 5, the second driving gear 801, the third driven gear 803, the fourth driving gear 804, the fourth driven gear 805, and the wheel 9 in this order to drive the wheel 9 to rotate.
When the first clutch 5 is disengaged and the second clutch 6 is engaged, the engine 1 transmits power to the first driving gear 301, the second driven gear 303, the second clutch 6, the second motor 7 (the first motor 7 idles), the third driving gear 802, the third driven gear 803, the fourth driving gear 804, the fourth driven gear 805, and the wheel 9 in this order, so as to drive the wheel 9 to rotate.
The two modes only consume fossil fuel, and enable the first motor 4 to generate power, and can be started when the electric quantity of the battery 2 is low, so that the normal running of the automobile is ensured.
The hybrid driving mode is that the wheels 9 are driven to rotate by the first motor 4 and/or the second motor 7 and the engine 1 together, and electric energy and heat energy of fossil fuel are consumed at the same time. Since the electric power that the battery 2 can supply to the first motor 4 and the second motor 7 is limited, in order to extend the use time of the battery 2 and ensure high-speed driving of the vehicle, the hybrid driving mode may be started, and the auxiliary motor provides stronger power to the vehicle through the engine 1. Two examples of hybrid driving modes are given below:
as a first example: as shown in fig. 3, in the hybrid driving mode, the engine 1 is operated, the first clutch 5 is engaged, the second clutch 6 is disengaged, the engine 1 transmits power to the first electric machine 4, and the battery 2 supplies electric energy to the first electric machine 4 and the second electric machine 7 to drive the wheels 9 to rotate together through the engine 1, the first electric machine 4 and the second electric machine 7.
Specifically, the battery 2 supplies electric power to the first motor 4 and the second motor 7 through the inverter 10, so that the first motor 4 and the second motor 7 are powered. Meanwhile, the engine 1 sequentially transmits power to the first driving gear 301, the first driven gear 302 and the first motor 4, and is coupled with the power of the first motor 4, then the power is sequentially transmitted to the first clutch 5, the second driving gear 801 and the third driven gear 803 by the first motor 4, the power is sequentially transmitted to the third driving gear 802 and the third driven gear 803 by the second motor 7, and is coupled with the power transmitted to the third driven gear 803 by the first motor 4, and then the power is sequentially transmitted to the fourth driving gear 804, the fourth driven gear 805 and the wheel 9 by the third driven gear 803, so that the wheel 9 rotates, that is, the wheel 9 is driven to rotate by the engine 1, the first motor 4 and the second motor 7 together.
In this mode, the second clutch 6 is disengaged, cutting off power transmission between the engine 1 and the second electric machine 7, avoiding gear jamming caused by different speed ratios in the two different power paths of the engine 1.
In the above mode, the engine 1, the first electric machine 4, or the second electric machine 7 can be operated efficiently according to the requirements of different torques, and two operation modes are given as follows:
as a first mode of operation: the engine 1 and the second motor 7 jointly drive the wheels 9 to rotate, and the first motor 4 can be in a non-operation state or a power generation state according to the efficiency of the engine 1. When the first electric machine 4 is in a generating state, the second electric machine 7 can be supplied with power through the inverter 10, and surplus electric energy can be stored in the battery 2.
As a second mode of operation: the engine 1 drives the wheels 9 to rotate independently, and the first motor 4 and/or the second motor 7 are/is idled and generates power according to whether the engine 1 works in a high-efficiency area or not.
As a second operation mode, as shown in fig. 4, in the hybrid driving mode, the engine 1 is operated, the first clutch 5 is disconnected, the second clutch 6 is engaged, the engine 1 transmits power to the second electric machine 7, and at the same time, the battery 2 supplies electric energy to the first electric machine 4 and the second electric machine 7, and the wheels 9 are driven to rotate by the engine 1, the first electric machine 4 and the second electric machine 7 together.
Specifically, the battery 2 supplies power to the first motor 4 and the second motor 7 through the inverter 10, and rotates the first motor 4 and the second motor 7. The power of the first motor 4 is sequentially transmitted to the first driven gear 302 and the first driving gear 301, coupled with the power transmitted from the engine 1 to the first driving gear 301, and then sequentially transmitted to the second driven gear 303, the second clutch 6, the second motor 7, and coupled with the power of the second motor 7, and then the second motor 7 sequentially transmits the coupled power to the third driving gear 802, the third driven gear 803, the fourth driving gear 804, the fourth driven gear 805, and the wheel 9, so as to rotate the wheel 9, that is, the engine 1, the first motor 4, and the second motor 7 jointly drive the wheel 9 to rotate.
In this mode, the first clutch 5 is disengaged, cutting off the power transmission between the second electric machine 7 and the wheels 9, avoiding gear jamming of the engine 1 due to different speed ratios in the two different power paths.
In the above mode, the engine 1, the first electric machine 4, or the second electric machine 7 can be operated efficiently according to the requirements of different torques, and two operation modes are given as follows:
as a first mode of operation: the engine 1 and the second motor 7 jointly drive the wheels 9 to rotate, and the first motor 4 can be in a non-operation state or a power generation state according to the efficiency of the engine 1. When the first electric machine 4 is in a generating state, the second electric machine 7 can be supplied with power through the inverter 10, and surplus electric energy can be stored in the battery 2.
As a second mode of operation: the engine 1 drives the wheels 9 to rotate independently, and the first motor 4 and/or the second motor 7 are/is idled and generates power according to whether the engine 1 works in a high-efficiency area or not.
The range extending mode is started when the oil consumption of the engine 1 is large and the working efficiency is low, in order to fully exert the energy released by the fossil fuel in the engine 1, the redundant energy in the engine 1 is converted into electric energy through the range extending mode, and then the automobile wheels 9 are driven to rotate by the electric energy, so that the use efficiency of the fossil fuel is improved.
As shown in fig. 5, in the range-extended mode, the engine 1 is operated, the first clutch 5 and the second clutch 6 are both disconnected, the second motor 7 is powered by the engine 1, the first motor 4 and the battery 2, and the wheels 9 are driven to rotate by the second motor 7.
In this mode, the engine 1 transmits power to the first driving gear 301, the first driven gear 302, and the first motor 4 in this order, and since the first clutch 5 is disengaged, the first motor 4 converts mechanical energy supplied from the engine 1 into electric energy and supplies power to the second motor 7 through the inverter 10, and excess electricity is stored in the battery 2. The second motor 7 transmits power to the third driving gear 802, the third driven gear 803, the fourth driving gear 804, the fourth driven gear 805, and the wheel 9 in sequence, so as to drive the wheel 9 to rotate.
In the energy recovery mode, mechanical energy is reversely transmitted through rotation of the automobile wheels 9, and the mechanical energy is converted into electric energy through the first motor 4 and the second motor 7 and stored in the battery 2, so that energy recovery is realized, and consumption of the electric energy is reduced. Examples of two energy recovery modes are given below:
as a first example: as shown in fig. 6, in the energy recovery mode, the engine 1 is not operated, both the first clutch 5 and the second clutch 6 are disconnected, the wheels 9 provide mechanical energy for the second electric machine 7, and the second electric machine 7 converts the mechanical energy into electric energy to be stored in the battery 2.
Specifically, the wheel 9 transmits power to the fourth driven gear 805, the fourth driving gear 804, the third driven gear 803, the third driving gear 802, and the second electric motor 7 in this order, and the second electric motor 7 converts the obtained mechanical energy into electric energy and stores the electric energy in the battery 2.
When the energy recovery mode is suitable for smaller braking force demand, only the mechanical energy braked by the wheels 9 is converted into electric energy through the second motor 7 for storage, and low energy recovery is realized.
As a second example: in the energy recovery mode, the engine 1 is not operated, the first clutch 5 is engaged, the second clutch 6 is disengaged, the wheels 9 simultaneously supply mechanical energy to the first electric machine 4 and the second electric machine 7, and the first electric machine 4 and the second electric machine 7 respectively convert the acquired mechanical energy into electric energy and store the electric energy in the battery 2.
Specifically, the wheel 9 transmits power to the fourth driven gear 805, the fourth driving gear 804, the third driven gear 803, the second driving gear 801, and the third driving gear 802 in sequence, and is transmitted to the first motor 4 and the second motor 7 by the second driving gear 801 and the third driving gear 802, respectively, and the first motor 4 and the second motor 7 convert the acquired mechanical energy into electric energy, respectively, and store the electric energy in the battery 2 through the inverter 10.
When the energy recovery mode is suitable for large braking force demand, the mechanical energy braked by the wheels 9 is converted into electric energy through the first motor 4 and the second motor 7 at the same time and is stored in the battery 2, so that high-energy recovery and utilization are realized.
In this mode, the first electric machine 4 will transmit part of the power to the engine 1, i.e. the engine 1 will consume a part of the energy, affecting an efficient recovery of energy. The power decoupling of the first electric machine 4 from the first transmission assembly 3 can be achieved by providing a clutch between the first transmission assembly 3 and the first electric machine 4, avoiding power transmission to the engine 1.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, which is intended to cover any variations, equivalents, or improvements included within the spirit and scope of the invention.

Claims (9)

1. An automotive hybrid system, the system comprising: an engine (1), a battery (2);
characterized in that the system further comprises: the gear shifting mechanism comprises a first speed changing assembly (3), a first motor (4), a first clutch (5), a second clutch (6), a second motor (7) and a second speed changing assembly (8);
the engine (1) is in transmission connection with a first transmission end of the first speed change assembly (3) through a transmission shaft;
the second transmission end of the first speed change component (3) is in transmission connection with the first motor (4), the first clutch (5) and the first transmission end of the second speed change component (8) in sequence through a transmission shaft;
the third transmission end of the first speed change assembly (3) is in transmission connection with the second clutch (6), the second motor (7) and the second transmission end of the second speed change assembly (8) in sequence through a transmission shaft;
the third transmission end of the second speed changing assembly (8) is in transmission connection with a wheel (9) through a transmission shaft;
the battery (2) provides electric energy for the first motor (4) and the second motor (7), and the first motor (4) and the second motor (7) are connected in parallel through a cable;
the second transmission assembly (8) comprises: a second driving gear (801), a third driving gear (802), a third driven gear (803), a fourth driving gear (804), and a fourth driven gear (805);
the second driving gear (801) and the third driving gear (802) are in transmission connection with the first clutch (5) and the second motor (7) through transmission shafts respectively, and the second driving gear (801) and the third driving gear (802) are meshed with the third driven gear (803) simultaneously;
the third driven gear (803) is coaxially connected with the fourth driving gear (804) through a transmission shaft, the fourth driving gear (804) is meshed with the fourth driven gear (805), and the fourth driven gear (805) is in transmission connection with the wheel (9) through the transmission shaft.
2. The system according to claim 1, characterized in that said first transmission assembly (3) comprises: a first driving gear (301), and a first driven gear (302) and a second driven gear (303) which are engaged with the first driving gear (301) at the same time;
the first driving gear (301), the first driven gear (302) and the second driven gear (303) are in transmission connection with the engine (1), the first motor (4) and the second clutch (6) through transmission shafts respectively.
3. The system of claim 1, further comprising: an inverter (10);
one end of the inverter (10) is electrically connected with the battery (2) through a cable, and the other end of the inverter is connected with the first motor (4) and the second motor (7) which are connected in parallel.
4. A method for applying the system of any one of claims 1 to 3 to a vehicle drive, the method comprising: electric-only mode, engine-only mode, hybrid drive mode, range-extending mode, and energy recovery mode.
5. The method of application according to claim 4, wherein the electric-only mode comprises: a single motor mode and a dual motor mode;
in the single-motor mode, the engine (1) is not operated, the first clutch (5) and the second clutch (6) are disconnected, the battery (2) supplies electric energy to the second motor (7), and the wheels (9) are driven to rotate by the second motor (7);
in the dual-motor mode, the engine (1) is not operated, one of the first clutch (5) and the second clutch (6) is selected to be connected, the other one of the first clutch and the second clutch is disconnected, the battery (2) supplies electric energy to the first motor (4) and the second motor (7), and the wheels (9) are driven to rotate together through the first motor (4) and the second motor (7).
6. Application method according to claim 4, characterized in that in the engine-only mode, the engine (1) is active, the first electric machine (4) and the second electric machine (7) are inactive, one of the first clutch (5) and the second clutch (6) is selected to be engaged and the other is disengaged, and the wheels (9) are driven in rotation by the engine (1).
7. The application method according to claim 4, characterized in that in the hybrid drive mode, the engine (1) is operated, the first clutch (5) is engaged, the second clutch (6) is disengaged, the engine (1) transmits power to the first electric machine (4), and at the same time, the battery (2) supplies electric energy to the first electric machine (4) and the second electric machine (7), and the wheels (9) are driven to rotate jointly by the engine (1), the first electric machine (4) and the second electric machine (7);
or, in the hybrid driving mode, the engine (1) works, the first clutch (5) is disconnected, the second clutch (6) is connected, the engine (1) transmits power to the second motor (7), and meanwhile, the battery (2) provides electric energy for the first motor (4) and the second motor (7), and the wheels (9) are driven to rotate together by the engine (1), the first motor (4) and the second motor (7).
8. Method of application according to claim 4, characterized in that in the range-extending mode the engine (1) is active, the first clutch (5) and the second clutch (6) are both disengaged, the second electric machine (7) is powered by the engine (1) and the first electric machine (4), the battery (2) and the wheels (9) are driven in rotation by the second electric machine (7).
9. -application method according to claim 4, characterised in that in the energy recovery mode the engine (1) is not operated, both the first clutch (5) and the second clutch (6) are disengaged, the wheels (9) provide the second electric machine (7) with mechanical energy, the second electric machine (7) converts mechanical energy into electrical energy and stores it in the battery (2);
or, the engine (1) does not work, the first clutch (5) is connected, the second clutch (6) is disconnected, the wheels (9) simultaneously provide mechanical energy for the first motor (4) and the second motor (7), and the first motor (4) and the second motor (7) respectively convert the acquired mechanical energy into electric energy and store the electric energy in the battery (2).
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