CN109017263B - Hybrid power system - Google Patents

Hybrid power system Download PDF

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Publication number
CN109017263B
CN109017263B CN201810821360.6A CN201810821360A CN109017263B CN 109017263 B CN109017263 B CN 109017263B CN 201810821360 A CN201810821360 A CN 201810821360A CN 109017263 B CN109017263 B CN 109017263B
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Prior art keywords
gear
clutch
motor
engine
synchronizer
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CN201810821360.6A
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Chinese (zh)
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CN109017263A (en
Inventor
王薪鉴
景枫
黄东
石洪广
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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
    • B60K6/36—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
    • 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

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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 a hybrid power system, and belongs to the field of hybrid electric vehicles. The hybrid system includes: the motor comprises an engine, a first motor, a second motor, a synchronizer, a first clutch, a second clutch, a first gear and a second gear. Wherein the first motor and the second motor are electrically connected in parallel. The engine, the synchronizer, the first clutch and the wheels are sequentially connected in a transmission manner. The first gear, the synchronizer, the second gear and the second clutch are in transmission connection in sequence. The second clutch is respectively connected with the first clutch and the wheel in a transmission way. The first motor is respectively connected with the first clutch, the second clutch and the wheel in a transmission way. The second motor is in transmission connection with the first gear. The hybrid power system provided by the invention can enable the engine, the first motor and the second motor to provide power for the wheels independently or together, thereby realizing hybrid driving of electric energy and fossil fuel to the automobile.

Description

Hybrid power system
Technical Field
The invention relates to the field of hybrid electric vehicles, in particular to a hybrid power system.
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, and the supporting facilities are still incomplete, so that the travel requirements of people cannot be met. The fossil fuel and the electric energy are combined for use, so that the crisis of the fossil fuel can be relieved, and the defects of a pure electric vehicle can be overcome.
Therefore, it is necessary to provide a hybrid drive system that can utilize fossil fuels and electrical energy.
Disclosure of Invention
The embodiment of the invention provides a hybrid power system, which can solve the technical problem. The specific technical scheme is as follows:
an embodiment of the present invention provides a hybrid system, including: the system comprises an engine, a first motor, a second motor, a synchronizer, a first clutch, a second clutch, a first gear and a second gear;
the first motor and the second motor are electrically connected in parallel;
the engine, the synchronizer, the first clutch and the wheels are sequentially in transmission connection;
the first gear, the synchronizer, the second gear and the second clutch are sequentially in transmission connection;
the second clutch is in transmission connection with the first clutch and the wheel respectively;
the first motor is in transmission connection with the first clutch, the second clutch and the wheel respectively;
the second motor is in transmission connection with the first gear.
In one possible design, the hybrid system further includes: an inverter and a battery pack electrically connected;
the inverter is electrically connected to the first motor and the second motor.
In one possible design, the hybrid system further includes: a first transmission shaft, a third gear, a fourth gear;
two ends of the first transmission shaft are in transmission connection with the third gear and the engine respectively, and the synchronizer and the first clutch are arranged on the first transmission shaft;
the fourth gear is meshed with the first gear and is in transmission connection with the second motor.
In one possible design, the hybrid system further includes: the second transmission shaft, the fifth gear, the sixth gear, the seventh gear, the eighth gear and the ninth gear;
two ends of the second transmission shaft are in transmission connection with the fifth gear and the sixth gear respectively;
the second clutch and the seventh gear are arranged on the second transmission shaft, and the seventh gear is positioned between the second clutch and the sixth gear;
the eighth gear is in transmission connection with the first motor and is sequentially meshed with the seventh gear and the third gear;
the ninth gear is meshed with the sixth gear and is in transmission coupling with the wheel.
In one possible design, the operating modes of the hybrid powertrain system include: a pure electric mode, a pure engine driving mode, a hybrid driving mode, a range extending mode and an energy recovery mode.
In one possible design, the electric-only mode includes: a single motor mode and a dual motor mode;
in the single-motor mode, the engine and the second motor do not work, the synchronizer, the first clutch and the second clutch are disconnected, and the wheels are driven to rotate by the first motor;
or the engine and the first motor do not work, the synchronizer is connected with the first gear, the first clutch is closed, the second clutch is disconnected, and the second motor drives the wheels to rotate;
in the dual-motor mode, the engine does not work, the synchronizer is connected with the second gear, the first clutch is closed, the second clutch is opened, and the first motor and the second motor jointly drive the wheels to rotate.
In one possible design, in the engine-only drive mode, the first and second electric machines are not operated;
the synchronizer is opened, the first clutch is closed, and the second clutch is opened;
or, the synchronizer is connected with the second gear, the first clutch is opened, and the second clutch is closed;
the wheels are driven to rotate by the engine.
In one possible design, in the hybrid drive mode, the engine and the first electric machine are operated, the second electric machine is not operated, the second clutch is closed, the first clutch is open, and the synchronizer is connected with the second gear;
the engine and the second motor work, the first motor does not work, the first clutch is closed, the second clutch is opened, and the synchronizer is opened;
the engine, the first motor and the second motor work, the second clutch is disconnected, the first clutch is closed, and the synchronizer is connected with the first gear;
the wheel is driven to rotate by the engine, the first motor and the second motor together, or the wheel is driven to rotate by the engine and the first motor together, or the wheel is driven to rotate by the engine and the second motor together.
In one possible design, in the range extending mode, the synchronizer, the first clutch and the second clutch are all disconnected, the first motor is provided with electric energy through the engine, the second motor and the battery pack, and the wheels are driven to rotate through the first motor.
In one possible design, in the energy recovery mode, the first clutch and the second clutch are both disconnected, and the synchronizer is connected to the first gear, converts mechanical energy into electric energy through the wheels and the first electric machine, and stores the electric energy in the battery pack.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the hybrid power system provided by the embodiment of the invention, the engine, the first motor and the second motor are arranged and are electrically connected in parallel, and the engine, the synchronizer, the first clutch and the wheels are sequentially in transmission connection; the second clutch is in transmission connection with the first clutch and the wheel respectively; the first motor is respectively connected with the first clutch, the second clutch and the wheel in a transmission way. The second motor is in transmission connection with the first gear, so that the engine, the first motor and the second motor can provide power for the wheels independently or together, and hybrid driving of electric energy and fossil fuel to the automobile is achieved. In addition, the first gear, the synchronizer, the second gear and the second clutch are sequentially connected in a transmission mode, so that the hybrid power system is guaranteed to have two fixed speed ratios, and the fuel economy of the whole vehicle is improved.
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 schematic structural diagram of a hybrid drive system provided in an embodiment of the present invention;
FIG. 2 is a schematic energy transfer diagram of a hybrid drive system in an electric-only mode according to an embodiment of the present invention;
FIG. 3 is a schematic energy transfer diagram of a hybrid drive system in a first hybrid drive mode, according to an embodiment of the present invention;
FIG. 4 is a schematic energy transfer diagram of the hybrid drive system in a second hybrid drive mode provided by an embodiment of the present invention;
FIG. 5 is a schematic energy transfer diagram of the hybrid drive system in a third hybrid drive mode, according to an embodiment of the present invention;
FIG. 6 is a schematic energy transfer diagram of a hybrid drive system in a range extending mode according to an embodiment of the present invention;
FIG. 7 is a schematic energy transmission diagram of a hybrid drive system in an energy recovery mode according to an embodiment of the invention.
The reference numerals denote:
1 an engine of a vehicle, wherein the engine comprises a power unit,
2 a first motor for driving the motor to rotate,
3 a second motor for driving the motor to rotate,
4, a synchronizer is used for synchronizing the signals,
5 a first clutch to be engaged with the first clutch,
6 of the second clutch, and 6 of the second clutch,
7 a first gear wheel, which is provided with a first gear wheel,
8, a second gear wheel is arranged on the second gear wheel,
9 an inverter for converting the voltage of the power supply to a DC voltage,
10 a battery pack comprising a plurality of battery cells,
11 a first transmission shaft which is arranged at the front end of the main shaft,
12 a third gear wheel, and a third gear wheel,
13 a fourth gear wheel, which is provided with a third gear wheel,
14 a second drive shaft for the second drive shaft,
15 a fifth gear wheel, which is provided with a third gear wheel,
16 a sixth gear wheel, which is provided with a third gear wheel,
17 a seventh gear wheel, which is,
18 an eighth gear wheel, which is,
19 a ninth gear wheel, which is provided with a first gear wheel,
and (4) X vehicle wheels.
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.
Detailed Description
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.
Note that the following "synchronizer 4 is turned off" means: the synchronizer 4 is separated from the first gear 7 and the second gear 8.
An embodiment of the present invention provides a hybrid system, as shown in fig. 1 to 7, including: the hybrid vehicle comprises an engine 1, a first motor 2, a second motor 3, a synchronizer 4, a first clutch 5, a second clutch 6, a first gear 7 and a second gear 8. Wherein the first electric machine 2 and the second electric machine 3 are electrically connected in parallel. The engine 1, the synchronizer 4, the first clutch 5 and the wheel X are connected in sequence in a transmission way. The first gear 7, the synchronizer 4, the second gear 8 and the second clutch 6 are sequentially in transmission connection. The second clutch 6 is respectively connected with the first clutch 5 and the wheel X in a transmission way. The first motor 2 is respectively connected with the first clutch 5, the second clutch 6 and the wheel X in a transmission way. The second motor 3 is in transmission connection with a first gear 7.
According to the hybrid power system provided by the embodiment of the invention, the engine 1, the first motor 2 and the second motor 3 are arranged, the first motor 2 and the second motor 3 are electrically connected in parallel, and the engine 1, the synchronizer 4, the first clutch 5 and the wheel X are sequentially in transmission connection; the second clutch 6 is respectively in transmission connection with the first clutch 5 and the wheel X; the first motor 2 is respectively connected with the first clutch 5, the second clutch 6 and the wheel X in a transmission way. The second motor 3 is in transmission connection with the first gear 7, so that the engine 1, the first motor 2 and the second motor 3 can independently or jointly provide power for the wheels X, and hybrid driving of electric energy and fossil fuel to an automobile is achieved. In addition, the first gear 7, the synchronizer 4, the second gear 8 and the second clutch 6 are sequentially in transmission connection, so that the hybrid power system is ensured to have two fixed speed ratios, and the fuel economy of the whole vehicle is improved.
To facilitate supplying electric power to the first electric machine 2 and the second electric machine 3, as shown in fig. 1 to 7, the hybrid system further includes: an inverter 9 and a battery pack 10 electrically connected. The inverter 9 is electrically connected to the first motor 2 and the second motor 3. The battery pack 10 is used to supply the first electric machine 2 and the second electric machine 3 with electric energy, but the electric energy supplied by the battery pack 10 is generally direct current, and the direct current needs to be converted into alternating current by the inverter 9 to ensure the operation of the first electric machine 2 and the second electric machine 3. Meanwhile, the first motor 2 and the second motor 3 are respectively electrically connected with the inverter 9, the alternating current output by the inverter 9 can respectively provide electric energy for the first motor 2 and the second motor 3, and the first motor 2 and the second motor 3 are equivalently electrically connected in a parallel mode. When the first motor 2 and the second motor 3 receive the mechanical energy, the mechanical energy can be converted into electric energy and transmitted to the inverter 9, and the electric energy is stored in the battery pack 10 through the inverter 9, so that the energy is recovered and stored, and the energy is saved.
In order to facilitate the transmission connection of the following components, as shown in fig. 1 to 7, the hybrid system further includes: a first transmission shaft 11, a third gear 12, and a fourth gear 13. The two ends of the first transmission shaft 11 are respectively in transmission connection with the third gear 12 and the engine 1, and the synchronizer 4 and the first clutch 5 are arranged on the first transmission shaft 11. The fourth gear 13 is meshed with the first gear 7 and is in transmission connection with the second motor 3.
Further, in order to facilitate the transmission connection of the following components, as shown in fig. 1 to fig. 7, the hybrid system further includes: a second transmission shaft 14, a fifth gear 15, a sixth gear 16, a seventh gear 17, an eighth gear 18, and a ninth gear 19. Wherein, both ends of the second transmission shaft 14 are respectively in transmission connection with the fifth gear 15 and the sixth gear 16. The second clutch 6 and the seventh gear 17 are provided on the second transmission shaft 14, and the seventh gear 17 is located between the second clutch 6 and the sixth gear 16. The eighth gear 18 is in transmission connection with the first motor 2 and is sequentially meshed with the seventh gear 17 and the third gear 12. The ninth gear 19 meshes with the sixth gear 16 and is drivingly coupled to the wheel X.
Through the state of adjustment synchronous ware 4, first clutch 5, second clutch 6, can make hybrid power system be in different mode, through the electric energy that different mode make full use of fossil fuel burning's heat energy or group battery 10 provided, make hybrid power system be in the state that can utilize the energy high efficiency all the time to reduce the energy consumption, the energy saving, reduce cost. Specifically, the hybrid system includes: a pure electric mode, a pure engine driving mode, a hybrid driving mode, a range extending mode and an energy recovery mode.
This pure electric mode includes: a single motor mode and a dual motor mode;
in the single motor mode, as shown in fig. 2, when the first motor 2 is operated alone, the engine 1 and the second motor 3 are not operated, the synchronizer 4, the first clutch 5, and the second clutch 6 are disconnected, and the wheels X are driven to rotate by the first motor 2. Specifically, the battery pack 10 discharges, the dc power discharged from the battery pack 10 is converted into ac power by the inverter 9, the ac power is transmitted to the first electric machine 2, the electric energy is converted into mechanical energy by the first electric machine 2, and the mechanical energy passes through the eighth gear 18, the seventh gear 17, the sixth gear 16, and the ninth gear 19 and drives the wheel X to rotate through the transmission shaft.
When the second motor 3 works alone, the engine 1 and the first motor 2 do not work, the synchronizer 4 is connected with the first gear 7, the first clutch 5 is closed, the second clutch 6 is disconnected, and the second motor 3 drives the wheel X to rotate. Specifically, the battery pack 10 discharges, the dc power discharged from the battery pack 10 is converted into ac power by the inverter 9, the ac power is transmitted to the second motor 3, the electric power is converted into mechanical power by the second motor 3, and the mechanical power drives the wheel X to rotate through the transmission shaft via the fourth gear 13, the first gear 7, the synchronizer 4, the first transmission shaft 11, the third gear 12, the seventh gear 17, the sixth gear 16, and the ninth gear 19.
In the dual-motor mode, the engine 1 does not work, the synchronizer 4 is connected with the second gear 8, the first clutch 5 is closed, the second clutch 6 is disconnected, and the wheels X are driven to rotate together by the first motor 2 and the second motor 3. Specifically, the battery pack 10 is discharged, the dc power discharged from the battery pack 10 is converted into ac power by the inverter 9, and the ac power is transmitted to the first motor 2 and the second motor 3, and the electric energy is converted into mechanical energy by the first motor 2 and the second motor 3, and the mechanical energy is transmitted to the wheel X, so that the wheel X is driven to rotate. The specific energy transmission path can refer to the energy transmission path of the first electric machine 2 and the second electric machine 3 when the two electric machines work independently. In this mode, the second electric machine 3 drags the engine 1 to rotate together during power transmission, which results in a large energy loss. When the automobile needs larger power, the single-motor mode can be directly switched to the hybrid driving mode.
The engine only drive mode is to power the vehicle only via the engine 1. When the automobile is cruising at a high speed, the direct driving of the automobile by the engine 1 is beneficial to reducing the fuel consumption of the automobile, and the operation mode is not limited by the power of the battery pack 10.
In the pure engine driving mode, the first motor 2 and the second motor 3 do not work, when the engine 1 is in the first speed ratio, the synchronizer 4 is disconnected, the first clutch 5 is closed, the second clutch 6 is disconnected, the engine 1 outputs power, and the power passes through the first transmission shaft 11, the third gear 12, the seventh gear 17, the sixth gear 16 and the ninth gear 19 and then drives the wheels X to rotate through the transmission shafts.
When the engine 1 is in the second speed ratio, the synchronizer 4 is connected with the second gear 8, the first clutch 5 is disconnected, the second clutch 6 is closed, the engine 1 outputs power, and the power passes through the synchronizer 4, the second gear 8, the fifth gear 15, the second transmission shaft 14, the seventh gear 17, the sixth gear 16 and the ninth gear 19 and then drives the wheel X to rotate through the transmission shafts.
In the hybrid driving mode, when the engine 1 drives the wheels X to rotate together with the first and second electric machines 2 and 3, as shown in fig. 3, the second clutch 6 is opened, the first clutch 5 is closed, and the synchronizer 4 is connected with the first gear 7. The engine 1 outputs power, and at the same time, the battery pack 10 discharges, the dc power discharged from the battery pack 10 is converted into ac power by the inverter 9 and transmitted to the first motor 2 and the second motor 3, the electric energy is converted into mechanical energy by the first motor 2 and the second motor 3, and the mechanical energy output by the first motor 2 is transmitted to the seventh gear 17 via the eighth gear 18; mechanical energy output by the second motor 3 passes through a fourth gear 13, a first gear 7, a synchronizer 4, a first transmission shaft 11, a third gear 12 and a seventh gear 17; the power output by the engine 1 is transmitted to the seventh gear 17 through the first transmission shaft 11 and the third gear 12; the power and mechanical energy of the engine 1, the first motor 2 and the second motor 3 are coupled at the seventh gear 17, and drive the wheel X to rotate through the transmission shaft after passing through the sixth gear 16 and the ninth gear 19.
As shown in fig. 4, when the engine 1 and the first motor 2 drive the wheel X to rotate together, the second motor 3 does not work, the second clutch 6 is closed, the first clutch 5 is opened, and the synchronizer 4 is connected with the second gear 8. Specific energy transfer paths may refer to the engine-only mode and the electric-only mode energy transfer paths described above. It should be noted that the mode is a low gear, and switching to this mode when the vehicle is running at a low speed helps the engine 1 to achieve better fuel economy and better power performance.
As shown in fig. 5, when the wheel X is driven by the engine 1 and the second electric machine 3 together to rotate, the engine 1 and the second electric machine 3 operate, the first electric machine 2 does not operate, the first clutch 5 is closed, the second clutch 6 is opened, and the synchronizer 4 is opened. Specific energy transfer paths may refer to the engine-only mode and the electric-only mode energy transfer paths described above. This mode is a high gear and is switched when the vehicle is travelling at higher speeds.
Based on the above, in the parallel hybrid driving mode, the engine 1, the first motor 2 and the second motor 3 can jointly drive the automobile to run, so that the power performance of the automobile is improved. And, by coupling the power output by the engine 1 and the mechanical energy output by the first and second electric machines 2 and 3 at the seventh gear 17, the power between the first electric machine 2 and the engine 1 can be supplemented to ensure that the engine 1 operates in an optimal fuel region (the optimal fuel region refers to a region providing the maximum power with the lowest fuel consumption).
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 give full play to the energy released by the fossil fuel in the engine 1, the excess energy in the engine 1 is converted into electric energy through the range extending mode, and then the wheels X are driven to rotate by the electric energy, so that the use efficiency of the fossil fuel is improved.
In the range extending mode, as shown in fig. 6, the first clutch 5 and the second clutch 6 are both disconnected, the synchronizer 4 is connected with the first gear 7, the first electric machine 2 is supplied with electric energy through the engine 1, the second electric machine 3 and the battery pack 10, and the wheels X are driven to rotate by the first electric machine 2. Specifically, the engine 1 outputs power, the power is transmitted to the second motor 3 through the synchronizer 4, the first gear 7 and the fourth gear 13, the power is converted into electric energy by the second motor 3, a part of the electric energy is transmitted to the first motor 2, and the wheels X are driven to rotate by the first motor 2; and another part of the electric energy is transferred to the inverter 9, and the inverter 9 is used to convert the alternating current into the direct current to charge the battery pack 10.
The range extending mode can realize the power decoupling of the engine 1, the first motor 2 and the second motor 3, so that the engine 1 works in a high-efficiency area. The mode is used when the speed is low and the residual electric quantity value of the battery is low, so that the fuel economy of the automobile can be improved.
In the energy recovery mode, as shown in fig. 7, the engine 1 and the second electric machine 3 are not operated, the synchronizer 4, the first clutch 5, and the second clutch 6 are all disconnected, and mechanical energy is converted into electric energy by the wheels X and the first electric machine 2 and stored in the battery pack 10. Mechanical energy generated when the automobile is coasting or braked is transmitted from the wheels X to the first electric machine 2 through the ninth gear 19, the sixth gear 16, the seventh gear 17, and the eighth gear 18, so that the first electric machine 2 generates electric power, and transmits the electric power to the inverter 9, and the inverter 9 converts ac power into dc power, and transmits and stores the dc power to the battery pack 10.
Braking is carried out in the pure electric mode, the first clutch 5 and the second clutch 6 are in an off state, the first motor 2 is decoupled with the engine 1, the engine 1 is not dragged backwards, and the energy recovery effect is good. When the automobile needs to be braked for a long time under the hybrid mode, such as continuous downhill working conditions and the like, the first clutch 5 or the second clutch 6 can be disconnected according to different hybrid modes, and the first motor 2 and the engine 1 are decoupled to achieve a good energy recovery effect.
In summary, the hybrid power system provided by the embodiment of the invention reduces the axial tooth size by adopting the arrangement mode of the parallel shaft structure, and simultaneously adjusts the positions of the first clutch 5, the second clutch 6 and the synchronizer 4, so that the system has two fixed speed ratio gears, and the fuel economy of the whole vehicle is improved.
The above description is only an illustrative embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A hybrid system, characterized by comprising: the device comprises an engine (1), a first motor (2), a second motor (3), a synchronizer (4), a first clutch (5), a second clutch (6), a first gear (7) and a second gear (8);
the first motor (2) and the second motor (3) are electrically connected in parallel;
the engine (1), the synchronizer (4), the first end of the first clutch (5), the second end of the first clutch (5) and a wheel (X) are in non-disconnectable sequential transmission coupling;
the first gear (7), the synchronizer (4), the second gear (8) and a first end of the second clutch (6) are sequentially in transmission coupling, the first gear (7) and the synchronizer (4) can be disconnected, the synchronizer (4) and the second gear (8) can be disconnected, and the second gear (8) and a first end of the second clutch (6) cannot be disconnected;
the second end of the second clutch (6) is in non-disconnectable transmission coupling with the second end of the first clutch (5) and the wheel (X), respectively;
the first motor (2) is in transmission connection with a second end of the first clutch (5), a second end of the second clutch (6) and the wheel (X) in a non-disconnectable manner;
the second electric machine (3) is in non-disconnectable transmission connection with the first gear (7).
2. The hybrid system of claim 1, further comprising: an inverter (9) and a battery pack (10) electrically connected;
the inverter (9) is electrically connected to the first motor (2) and the second motor (3).
3. The hybrid system of claim 2, further comprising: a first transmission shaft (11), a third gear (12), and a fourth gear (13);
the two ends of the first transmission shaft (11) are in transmission connection with the third gear (12) and the engine (1) in a non-disconnectable manner, and the synchronizer (4) and the first clutch (5) are arranged on the first transmission shaft (11);
the fourth gear (13) is meshed with the first gear (7) and is in non-disconnectable transmission connection with the second motor (3).
4. The hybrid system of claim 3, further comprising: a second transmission shaft (14), a fifth gear (15), a sixth gear (16), a seventh gear (17), an eighth gear (18) and a ninth gear (19);
the two ends of the second transmission shaft (14) are in non-disconnectable transmission connection with the fifth gear (15) and the sixth gear (16), and the fifth gear (15) is meshed with the second gear (8);
the second clutch (6) and the seventh gear (17) are arranged on the second transmission shaft (14), and the seventh gear (17) is located between the second clutch (6) and the sixth gear (16);
the eighth gear (18) is in non-disconnectable transmission connection with the first motor (2) and is sequentially meshed with the seventh gear (17) and the third gear (12);
the ninth gear (19) meshes with the sixth gear (16) and is coupled in a non-disconnectable transmission with the wheel (X).
5. The hybrid powertrain system of claim 4, wherein the operating modes of the hybrid powertrain system include: a pure electric mode, a pure engine driving mode, a hybrid driving mode, a range extending mode and an energy recovery mode.
6. The hybrid powertrain system of claim 5, wherein the electric-only mode comprises: a single motor mode and a dual motor mode;
in the single-motor mode, the engine (1) and the second motor (3) do not work, the synchronizer (4), the first clutch (5) and the second clutch (6) are disconnected, and the wheels (X) are driven to rotate by the first motor (2);
or the engine (1) and the first motor (2) do not work, the synchronizer (4) is connected with the first gear (7), the first clutch (5) is closed, the second clutch (6) is opened, and the wheel (X) is driven to rotate by the second motor (3);
in the dual-motor mode, the engine (1) does not work, the synchronizer (4) is connected with the second gear (8), the first clutch (5) is closed, the second clutch (6) is opened, and the wheel (X) is driven to rotate together by the first motor (2) and the second motor (3).
7. Hybrid powertrain system according to claim 5, characterized in that in the engine-only driving mode the first electric machine (2) and the second electric machine (3) are not operated;
the synchronizer (4) is opened, the first clutch (5) is closed, and the second clutch (6) is opened;
or the synchronizer (4) is connected with the second gear (8), the first clutch (5) is disconnected, and the second clutch (6) is closed;
the wheel (X) is driven to rotate by the engine (1).
8. Hybrid powertrain system according to claim 5, characterized in that in the hybrid driving mode the engine (1) and the first electric machine (2) are active, the second electric machine (3) is inactive, the second clutch (6) is closed, the first clutch (5) is open, the synchronizer (4) is connected with the second gear (8);
the engine (1) and the second motor (3) work, the first motor (2) does not work, the first clutch (5) is closed, the second clutch (6) is opened, and the synchronizer (4) is opened;
the engine (1), the first motor (2) and the second motor (3) work, the second clutch (6) is disconnected, the first clutch (5) is closed, and the synchronizer (4) is connected with the first gear (7);
the wheel (X) is driven to rotate by the engine (1), the first motor (2) and the second motor (3) together, or the wheel (X) is driven to rotate by the engine (1) and the first motor (2) together, or the wheel (X) is driven to rotate by the engine (1) and the second motor (3) together.
9. Hybrid system according to claim 5, characterized in that in said range-extending mode, said first clutch (5) and said second clutch (6) are both disengaged, said synchronizer (4) is connected to said first gear (7), said first electric machine (2) is supplied with electric energy through said engine (1) and said second electric machine (3), and said battery (10) drives said wheels (X) in rotation through said first electric machine (2).
10. Hybrid system according to claim 5, characterized in that in said energy recovery mode, said synchronizer (4), said first clutch (5) and said second clutch (6) are all disconnected, the mechanical energy is converted into electric energy by said wheels (X) and said first electric machine (2) and stored in said battery pack (10).
CN201810821360.6A 2018-07-24 2018-07-24 Hybrid power system Active CN109017263B (en)

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GB496754A (en) * 1936-05-07 1938-11-30 Gaston Fleischel Improvements relating to devices for control and operation by fluid servo-motor
DE102006036758B4 (en) * 2006-08-05 2015-03-12 Zf Friedrichshafen Ag Automated dual-clutch transmission of a motor vehicle
CN201362167Y (en) * 2009-03-04 2009-12-16 上海汽车集团股份有限公司 Simple series-parallel hybrid system capable of outputting power continuously
CN103448528B (en) * 2013-08-09 2017-02-01 浙江吉利汽车研究院有限公司 hybrid power coupling device

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