CN111114280B - Power driving system and vehicle - Google Patents

Power driving system and vehicle Download PDF

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Publication number
CN111114280B
CN111114280B CN201811284477.1A CN201811284477A CN111114280B CN 111114280 B CN111114280 B CN 111114280B CN 201811284477 A CN201811284477 A CN 201811284477A CN 111114280 B CN111114280 B CN 111114280B
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China
Prior art keywords
clutch
drive mode
engine
motor
driving
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CN201811284477.1A
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Chinese (zh)
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CN111114280A (en
Inventor
穆金辉
朱新明
杜延义
陈俊坤
谢华明
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BYD Co Ltd
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BYD Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26Arrangement 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 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36Arrangement 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 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38Arrangement 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 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00Control systems specially adapted for hybrid vehicles
    • B60W20/40Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00Output or target parameters relating to a particular sub-units
    • B60W2710/02Clutches
    • B60W2710/021Clutch engagement state

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

Abstract

The invention discloses a power driving system and a vehicle, which comprise a first motor, a first clutch, a second clutch, a third clutch, a first input shaft, a second input shaft, a third input shaft, an output shaft, a first gear set, a second gear set and a third gear set, wherein the first motor is respectively connected with the first input shaft, the second input shaft and the third input shaft through the first clutch, the second clutch and the third clutch, and the first input shaft, the second input shaft and the third input shaft are respectively connected with the output shaft through the first gear set, the second gear set and the third gear set. The first gear set, the second gear set and the third gear set correspond to three speed ratios, and the first clutch, the second clutch and the third clutch are switched, so that three-gear speed change of the first motor can be realized, different driving force requirements can be met, and the vehicle economy is improved; the structure is simple and compact, the number of used parts is small, energy transmission loss is small, and the system efficiency is improved.

Description

Power driving system and vehicle
Technical Field
The invention belongs to the technical field of power, and particularly relates to a power driving system and a vehicle.
Background
Hybrid powertrain systems may improve vehicle economy in a number of ways. For example, the engine may be turned off during idle, deceleration, or braking, and travel in an electric-only drive mode to eliminate efficiency losses due to engine drag. Additionally, energy stored in the power battery, generated by regenerative braking or generated by the electric machine during engine operation, may be utilized in an electric-only drive mode, or to supplement the torque or power of the engine in a hybrid drive mode.
Hybrid vehicles are capable of being driven by combining at least two different powers, and most of the hybrid vehicles currently employ a gasoline-electric hybrid system including an engine powered from fuel and an electric motor driven by electric power. In order to improve the combustion efficiency of the engine to the maximum extent, hybrid power systems developed by many automobile manufacturers all adopt a dual-motor structure, namely, a generator is added besides a driving motor. Because the engine, the generator and the driving motor exist at the same time, the connection and control among the engine, the generator and the driving motor directly influence the performance of the hybrid vehicle.
The prior hybrid power driving system comprises an engine, a power motor and an auxiliary motor, the engine outputs power to wheels of the hybrid electric vehicle through the double clutches, the second input shaft is coaxially sleeved on the first input shaft, the engine is arranged to be selectively connected with one of the first input shaft and the second input shaft through the double clutches, a gear driving gear is arranged on each of the first input shaft and the second input shaft, the first output shaft and the second output shaft are arranged in parallel with the first input shaft, a gear driven gear is arranged on each of the first output shaft and the second output shaft, the gear driven gears are correspondingly meshed with the gear driving gears, the power motor is arranged to be linked with the first input shaft or the second input shaft, and the auxiliary motor is connected with the engine and generates power under the driving of the engine to charge the power battery; although two motors are arranged, the two motors are functionally distinguished, the power motor is only used for driving, the auxiliary motor is only used for generating power, the charging efficiency is low, and the power driving system cannot be effectively kept in a high-efficiency region to work due to the fact that the engine only has two power output gears and the electric driving only has one power output gear.
In addition, the existing hybrid power system is difficult to solve the efficiency problem of low-speed and medium-low-speed engines, the electric balance problem and the high-speed dynamic problem of the engines at the same time. The engine is difficult to work in a fuel economy area, and the vehicle economy is poor.
In addition, the electric power drive system usually has only one power output gear, and cannot effectively keep the power drive system in an efficient region for operation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problem of poor vehicle economy in the existing scheme, a power driving system and a vehicle are provided.
In order to solve the above technical problem, in one aspect, an embodiment of the present invention provides a power driving system, including a first motor, a first clutch, a second clutch, a third clutch, a first input shaft, a second input shaft, a third input shaft, an output shaft, a first gear set, a second gear set, and a third gear set;
the first motor is connected with the first input shaft, the second input shaft and the third input shaft through the first clutch, the second clutch and the third clutch respectively;
the first input shaft is connected to the output shaft through the first gear set;
the second input shaft is connected to the output shaft through the second gear set;
the third input shaft is connected to the output shaft through the third gear set;
the first gear set, the second gear set and the third gear set correspond to three speed ratios.
Further, the first gear set comprises a first driving gear arranged on the first input shaft and a first driven gear arranged on the output shaft, and the first driving gear is meshed with the first driven gear;
the second gear set comprises a second driving gear arranged on the second input shaft and a second driven gear arranged on the output shaft, and the second driving gear is meshed with the second driven gear;
the third gear set comprises a third driving gear arranged on the third input shaft and a third driven gear arranged on the output shaft, and the third driving gear is meshed with the third driven gear.
Furthermore, the first clutch, the second clutch and the third clutch are integrated three clutches, the first input shaft and the second input shaft are hollow shafts, the first input shaft is rotatably arranged in a shaft hole of the second input shaft, and the third input shaft is rotatably arranged in the shaft hole of the first input shaft.
Further, the first clutch, the second clutch and the third clutch are coaxially and fixedly arranged;
the third clutch is embedded in the first clutch and the second clutch, or the first clutch and the third clutch are embedded in the second clutch.
Further, the engine and a fourth clutch are included, and the engine is connected with the first motor through the fourth clutch.
Further, the motor further comprises a second motor, and the second motor is connected with the first input shaft, the second input shaft, the third input shaft or the output shaft.
The engine is connected with the first motor through the fourth clutch, and the second motor is connected with the third input shaft.
Further, the power driving system is provided with a first pure electric driving mode, a second pure electric driving mode and a third pure electric driving mode;
engaging the first clutch, disengaging the second clutch and the third clutch, the first motor driving to establish a first electric-only drive mode;
engaging the second clutch, disengaging the first clutch and the third clutch, and driving by the first motor to establish a second electric-only driving mode;
and engaging the third clutch, disconnecting the first clutch and the second clutch, and driving the first motor to establish a third pure electric driving mode.
Further, when an engine is provided, the power drive system has a first pure electric drive mode, a second pure electric drive mode, a third pure electric drive mode, a series drive mode, a first parallel drive mode, a second parallel drive mode, a third parallel drive mode, a first engine direct drive mode, a second engine direct drive mode, a third engine direct drive mode, a fourth engine direct drive mode, a fifth engine direct drive mode and a sixth engine direct drive mode;
the first clutch is engaged, the second clutch, the third clutch and the fourth clutch are disconnected, the engine does not work, and the first motor drives to establish a first pure electric driving mode;
engaging the second clutch, disengaging the first clutch, the third clutch and the fourth clutch, not operating the engine, and driving the first motor to establish a second electric-only driving mode;
the third clutch is engaged, the first clutch, the second clutch and the fourth clutch are disconnected, the engine does not work, and the first motor drives to establish a third pure electric driving mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, the first motor driving to establish a first parallel drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, the first motor driving to establish a second parallel drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first motor driving to establish a third parallel drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, the first electric machine generating electricity to establish a first engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, the first electric machine generating electricity to establish a second engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine generating electricity to establish a third engine direct drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first electric machine being inoperative to establish a fourth engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first electric machine being inoperative to establish a fifth engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine not operating to establish a sixth engine direct drive mode.
Further, when a second motor is arranged and is connected with the third input shaft, the power driving system has a first pure electric driving mode, a second pure electric driving mode, a third pure electric driving mode, a fourth pure electric driving mode, a fifth pure electric driving mode, a sixth pure electric driving mode, a seventh pure electric driving mode, a series driving mode, a first parallel driving mode, a second parallel driving mode, a third parallel driving mode, a first engine direct driving mode, a second engine direct driving mode, a third engine direct driving mode, a fourth engine direct driving mode, a fifth engine direct driving mode and a sixth engine direct driving mode;
the first clutch is engaged, the second clutch, the third clutch and the fourth clutch are disconnected, the engine does not work, the first motor drives, and the second motor does not work, so that a first pure electric driving mode is established;
engaging the second clutch, disconnecting the first clutch, the third clutch and the fourth clutch, enabling the engine to be out of work, enabling the first motor to drive, and enabling the second motor to be out of work, so as to establish a second pure electric driving mode;
the third clutch is engaged, the first clutch, the second clutch and the fourth clutch are disconnected, the engine does not work, the first motor drives, and the second motor does not work, so that a third pure electric driving mode is established;
disconnecting the first clutch, the second clutch, the third clutch and the fourth clutch, enabling the engine to be out of work, enabling the first motor to be out of work, and enabling the second motor to be driven to establish a fourth pure electric driving mode;
the first clutch is engaged, the second clutch, the third clutch and the fourth clutch are disconnected, the engine does not work, the first motor drives, the second motor drives, and a fifth pure electric driving mode is established;
engaging the second clutch, disengaging the first clutch, the third clutch and the fourth clutch, deactivating the engine, driving the first motor, and driving the second motor to establish a sixth electric drive mode;
engaging the third clutch, disengaging the first clutch, the second clutch and the fourth clutch, deactivating the engine, driving the first motor, driving the second motor, and establishing a seventh electric drive mode;
engaging the fourth clutch, disengaging the first clutch, the second clutch, and the third clutch, the engine driving, the first motor generating electricity, the second motor driving to establish a series drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first motor being driven or not being operated, the second motor being driven to establish a first parallel drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first motor being driven or not operated, the second motor being driven to establish a second parallel drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first motor driving or not, the second motor driving to establish a third parallel driving mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, at least one of the first electric machine and the second electric machine generating electricity to establish a first engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, at least one of the first electric machine and the second electric machine generating electricity to establish a second engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, at least one of the first electric machine and the second electric machine generating electricity to establish a third engine direct drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first electric machine and the second electric machine being deactivated to establish a fourth engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first electric machine and the second electric machine being inoperative to establish a fifth engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine and the second electric machine not operating to establish a sixth engine direct drive mode.
In another aspect, an embodiment of the present invention further provides a vehicle, which includes the above power drive system.
According to the power driving system and the vehicle provided by the embodiment of the invention, by controlling the connection or disconnection of the first clutch, the second clutch and the third clutch, the power of the first motor can be selectively transmitted to the output shaft through one gear set of the first gear set, the second gear set and the third gear set, so that the first motor can output three speed ratios, the three-gear speed change of the first motor is realized, different driving force requirements can be met, the first motor can work in a higher-economical interval as much as possible, the working efficiency of the system is high, and the economical efficiency of the vehicle is improved; the power driving system has the advantages of simple and compact structure, less used parts, reduced structural complexity, less energy transmission loss and improved system efficiency.
Drawings
FIG. 1 is a schematic illustration of a first embodiment of a power drive system according to the present invention;
FIG. 2 is a schematic illustration of a power drive system according to a first embodiment of the present invention;
FIG. 3 is a schematic illustration of a power drive system according to a second embodiment of the present invention;
FIG. 4 is a schematic illustration of a power drive system according to a third embodiment of the present invention;
FIG. 5 is a power transmission route diagram of a portion of the power drive system shown in FIG. 1 in a first electric-only drive mode;
FIG. 6 is a power transmission route diagram of a portion of the power drive system shown in FIG. 1 in a second electric-only drive mode;
FIG. 7 is a power transmission route diagram of a portion of the power drive system of FIG. 1 in a third electric-only drive mode;
FIG. 8 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in the first electric-only drive mode;
FIG. 9 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a second electric-only drive mode;
FIG. 10 is a power transmission route diagram of a portion of the power drive system of FIG. 4 in a third electric-only drive mode;
FIG. 11 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a fourth electric-only drive mode;
FIG. 12 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a fifth electric-only drive mode;
FIG. 13 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a sixth electric-only drive mode;
FIG. 14 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a seventh electric-only drive mode;
FIG. 15 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a series drive mode;
FIG. 16 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a first parallel drive mode;
FIG. 17 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in the second parallel drive mode;
FIG. 18 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in a third parallel drive mode;
FIG. 19 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in the first engine direct drive mode;
FIG. 20 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in the second engine direct drive mode;
FIG. 21 is a power transmission route diagram of the portion of the power drive system illustrated in FIG. 4 in the third engine direct drive mode;
FIG. 22 is a power transmission route map of the portion of the power drive system illustrated in FIG. 4 in the fourth engine direct drive mode;
FIG. 23 is a power transmission route diagram of a portion of the power drive system illustrated in FIG. 4 in the fifth engine direct drive mode;
FIG. 24 is a power transmission route map of a portion of the power drive system shown in FIG. 4 in the sixth engine direct drive mode;
fig. 25 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. an engine; 2. a first motor; 3. a second motor; 4. a first clutch; 5. a second clutch; 6. a third clutch; 7. a fourth clutch; 8. a first input shaft; 9. a second input shaft; 10. a third input shaft; 11. an output shaft;
12. a first gear set; 121. a first drive gear; 122. a first driven gear;
13. a second gear set; 131. a second driving gear; 132. a second driven gear;
14. a third gear set; 141. a third driving gear; 142. a third driven gear;
15. a main reducer; 16. a differential mechanism; 17. a wheel;
100. a vehicle; 200. and (3) a power driving system.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
First embodiment
Referring to fig. 1, a power driving system according to a first embodiment of the present invention includes a first motor 2, a first clutch 4, a second clutch 5, a third clutch 6, a first input shaft 8, a second input shaft 9, a third input shaft 10, an output shaft 11, a first gear set 12, a second gear set 13, and a third gear set 14;
the first motor 2 is connected with a first input shaft 8, a second input shaft 9 and a third input shaft 10 through a first clutch 4, a second clutch 5 and a third clutch 6 respectively;
the first input shaft 8 is connected to the output shaft 11 through a first gear set 12;
the second input shaft 9 is connected to the output shaft 11 through a second gear set 13;
the third input shaft 10 is connected to the output shaft 11 through a third gear set 14;
the first gear set 12, the second gear set 13, and the third gear set 14 correspond to three speed ratios. For convenience of description, the input shaft will be used hereinafter to generally refer to one or more of the first input shaft 8, the second input shaft 9, and the third input shaft 10.
By controlling the connection or disconnection of the first clutch 4, the second clutch 5 and the third clutch 6, the power of the first motor 2 can be selectively transmitted to the output shaft 11 through one of the first gear set 12, the second gear set 13 and the third gear set 14, so that the first motor 2 can output three speed ratios, the three-gear speed change of the first motor 2 is realized, different driving force requirements can be met, the first motor 2 can work in a high-economical interval as much as possible, the working efficiency of the system is high, and the vehicle economy is improved; the power driving system has the advantages of simple and compact structure, less used parts, reduced structural complexity, less energy transmission loss and improved system efficiency.
In addition, referring to fig. 1, the power driving system further includes a final drive 15 and a differential 16, the final drive 15 is connected to an output end of the output shaft 11, and the differential 16 is connected between the final drive 15 and the wheels 17, so that the power of the output shaft 11 is transmitted to the wheels 17 through the final drive 15 and the differential 16 to drive the vehicle to run. Of course, an output member for transmitting power may be provided between the output shaft 11 and the final drive 15.
Preferably, referring to fig. 1, the first gear set 12 includes a first driving gear 121 disposed on the first input shaft 8 and a first driven gear 122 disposed on the output shaft 11, the first driving gear 121 is engaged with the first driven gear 122;
the second gear set 13 includes a second driving gear 131 disposed on the second input shaft 9 and a second driven gear 132 disposed on the output shaft 11, and the second driving gear 131 is engaged with the second driven gear 132;
the third gear set 14 includes a third driving gear 141 provided on the third input shaft 10 and a third driven gear 142 provided on the output shaft 11, and the third driving gear 141 is engaged with the third driven gear 142; the power output path is simplified, the structure is simpler and more compact, and the reduction of energy transmission loss and the miniaturization of a power driving system are facilitated.
Preferably, referring to fig. 1 and 2, the first clutch 4, the second clutch 5 and the third clutch 6 are integrated three clutches, the first input shaft 8 and the second input shaft 9 are hollow shafts, the first input shaft 8 is rotatably disposed in a shaft hole of the second input shaft 9, and the third input shaft 10 is rotatably disposed in a shaft hole of the first input shaft 8; the structure is simple and compact, the miniaturization of a power driving system is facilitated, and the energy transmission loss is reduced as much as possible.
More preferably, the first clutch 4, the second clutch 5 and the third clutch 6 are coaxially and fixedly arranged; the third clutch 6 is embedded in the first clutch 4 and the second clutch 5 (see fig. 1), or the first clutch 4 and the third clutch 6 are embedded in the second clutch 5 (see fig. 2). The integration of the first clutch 4, the second clutch 5 and the third clutch 6 is realized, the third clutch 6 corresponding to the third input shaft 10 positioned at the center in the input shaft is arranged at the inner layer of the integrated three-clutch, the second clutch 5 corresponding to the second input shaft 9 positioned at the outermost layer in the input shaft is arranged at the outer layer in the integrated three-clutch, and the first clutch 4 corresponding to the first input shaft 8 positioned in the middle in the input shaft is arranged at the inner layer or the outer layer in the integrated three-clutch.
More preferably, referring to fig. 1 and 2, the driven part of the first clutch 4 is closer to the axis of the first electric machine 2 than the driving part, the driven part of the second clutch 5 is closer to the axis of the first electric machine 2 than the driving part, and the driven part of the third clutch 6 is closer to the axis of the first electric machine 2 than the driving part, which is beneficial to reduce the size of the first input shaft 8, the second input shaft 9 and the third input shaft 10, thereby reducing the load.
Wherein the first clutch 4, the second clutch 5, the third clutch 6, the first gear set 12, the second gear set 13 and the third gear set 14 are further denoted by C1, C2, C3, GS1, GS2 and GS3, respectively, on fig. 5-7.
The first embodiment provides a power drive system having 3 pure electric drive modes: the first pure electric drive mode, the second pure electric drive mode and the third pure electric drive mode. The operation logic in each driving mode is shown in table 1.
Table 1 table of operation logic in each driving mode (first embodiment)
Figure BDA0001848727090000071
Hereinafter, the power transmission route in each driving mode will be described in detail with reference to fig. 5 to 7.
(1) First pure electric drive mode
The first clutch 4 is engaged, the second clutch 5 and the third clutch 6 are disconnected, and the first motor 2 is driven to establish a first pure electric driving mode;
referring to fig. 5, the power transmission path in the driving mode is: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(2) Second pure electric drive mode
The second clutch 5 is engaged, the first clutch 4 and the third clutch 6 are disconnected, and the first motor 2 drives to establish a second pure electric driving mode;
referring to fig. 6, the power transmission path in the driving mode is: the first electric machine 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(3) Third pure electric drive mode
The third clutch 6 is engaged, the first clutch 4 and the second clutch 5 are disconnected, and the first motor 2 is driven to establish a third pure electric driving mode so as to establish a third pure electric driving mode;
referring to fig. 7, the power transmission route 1 in the driving mode is: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
Under first pure electric drive mode, second pure electric drive mode and third pure electric drive mode: the power driving system drives the wheels 17 by using the first motor 2, and realizes the output of the third gear ratio of the first motor 2 by switching the first clutch 4, the second clutch 5 and the third clutch 6.
Second embodiment
Referring to fig. 3, in the present embodiment, an engine 1 and a fourth clutch 7 are additionally provided on the basis of the first embodiment, and the engine 1 is connected to the first motor 2 through the fourth clutch 7; the other structures of the second embodiment are the same as those of the first embodiment, and are not described herein again.
The power of the first motor 2 can be selectively transmitted to the output shaft 11 through one of the first gear set 12, the second gear set 13 and the third gear set 14 by controlling the connection or disconnection of the first clutch 4, the second clutch 5 and the third clutch 6, so that the first motor 2 can output three speed ratios, thereby realizing three-gear speed change of the first motor 2, the power of the engine 1 can be selectively transmitted to the output shaft 11 through one of the first gear set 12, the second gear set 13 and the third gear set 14 by controlling the connection or disconnection of the first clutch 4, the second clutch 5 and the third clutch 6 when the fourth clutch 7 is connected, so that the engine 1 can output three speed ratios, thereby realizing three-gear speed change of the engine 1, the first motor 2 can be used for power generation or driving, and a pure electric drive mode can be realized, The hybrid power system comprises a series driving mode, a parallel driving mode and an engine direct driving mode, wherein multiple driving modes comprise multiple gears, different driving force requirements of the engine 1 can be met, the engine 1 can work in a region with high fuel economy as far as possible, the first motor 2 works in a region with high economy, and the system working efficiency is high, so that the vehicle economy is improved; this power driving system, engine 1 and first motor 2 share a set of three steps of variable speed structure (first clutch 4, first input shaft 8, first gear train 12, second clutch 5, second input shaft 9, second gear train 13, third clutch 6, third input shaft 10, third gear train 14), the integrated level is high, through the setting of a set of three steps of variable speed structure, realize the three steps of variable speed of engine 1 and first motor 2 simultaneously, moreover, the steam generator is simple in structure, compact, the spare part quantity of use is less, the structure complexity of power driving system has been reduced, energy transmission loss is less, and system efficiency is improved.
The second embodiment provides a power drive system having a plurality of drive modes: the hybrid vehicle is characterized by comprising 3 pure electric drive modes (a first pure electric drive mode, a second pure electric drive mode and a third pure electric drive mode), a series drive mode, 3 parallel drive modes (a first parallel drive mode, a second parallel drive mode and a third parallel drive mode), and 6 engine direct drive modes (a first engine direct drive mode, a second engine direct drive mode, a third engine direct drive mode, a fourth engine direct drive mode, a fifth engine direct drive mode and a sixth engine direct drive mode). The operation logic in each driving mode is shown in table 2.
Table 2 table of operation logic in each driving mode (second embodiment)
Figure BDA0001848727090000081
Figure BDA0001848727090000091
(1) First pure electric drive mode
The first clutch 4 is engaged, the second clutch 5, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, and the first motor 2 drives to establish a first pure electric driving mode;
the power transmission route in the driving mode is as follows: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(2) Second pure electric drive mode
The second clutch 5 is connected, the first clutch 4, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, and the first motor 2 drives to establish a second pure electric driving mode;
the power transmission route in the driving mode is as follows: the first electric machine 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(3) Third pure electric drive mode
The third clutch 6 is engaged, the first clutch 4, the second clutch 5 and the fourth clutch 7 are disconnected, the engine 1 does not work, and the first motor 2 drives to establish a third pure electric driving mode;
the power transmission route in the driving mode is as follows: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
The power transmission routes of the second embodiment in the first pure electric drive mode, the second pure electric drive mode and the third pure electric drive mode are similar to those of the third embodiment in the first pure electric drive mode, the second pure electric drive mode and the third pure electric drive mode, and independent drawings are omitted here, and fig. 8, 9 and 10 can be referred to.
The second embodiment is implemented in the first pure electric drive mode, the second pure electric drive mode and the third pure electric drive mode: the power driving system utilizes the first motor 2 to drive the wheels 17, simultaneously the engine 1 does not work, and the three-gear speed ratio output of the first motor 2 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6.
(4) First parallel driving mode
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, driving the first electric machine 2, to establish a first parallel driving mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission route 2 is: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(5) Second parallel drive mode
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, and driving the first motor 2 to establish a second parallel driving mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission route 2 is: the first electric machine 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(6) Third parallel drive mode
Engaging the fourth clutch 7 and the third clutch 6, disengaging the first clutch 4 and the second clutch 5, driving the engine 1, and driving the first motor 2 to establish a third parallel driving mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission route 2 is: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
The power transmission route of the second embodiment in the first parallel drive mode, the second parallel drive mode, and the third parallel drive mode is similar to that of the third embodiment in the first parallel drive mode, the second parallel drive mode, and the third parallel drive mode, and reference is made to fig. 16, 17, and 18 without being separately attached.
The second embodiment is in the first parallel drive mode, the second parallel drive mode, and the third parallel drive mode: the power driving system utilizes the engine 1 and the first motor 2 to drive wheels 17 together, and realizes the three-gear speed ratio output of the coupling power of the engine 1 and the first motor 2 by switching the first clutch 4, the second clutch 5 and the third clutch 6.
(7) First Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, and generating electricity by the first electric machine 2 to establish a first engine direct drive mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2.
(8) Second Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, and generating electricity by the first motor 2 to establish a second engine direct drive mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2.
(9) Third Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the third clutch 6, disengaging the first clutch 4 and the second clutch 5, driving the engine 1, and generating electricity by the first motor 2 to establish a third engine direct drive mode;
the power transmission route 1 in this drive mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2.
The power transmission route of the second embodiment in the first engine direct drive mode, the second engine direct drive mode, and the third engine direct drive mode is similar to that of the third embodiment in the first engine direct drive mode, the second engine direct drive mode, and the third engine direct drive mode, and independent drawings are omitted and fig. 19, 20, and 21 may be referred to.
The second embodiment is in the first engine direct drive mode, the second engine direct drive mode, and the third engine direct drive mode: the power driving system utilizes the engine 1 to drive the wheels 17, meanwhile, the engine 1 drives the first motor 2 to generate power for the battery, and the third clutch 6, the second clutch 4 and the third clutch 5 are switched to realize the output of the engine 1 with the third gear ratio.
(10) Fourth Engine direct drive mode (Motor no-load)
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, and deactivating the first electric machine 2 to establish a fourth engine direct drive mode;
the power transmission route in the driving mode is as follows: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(11) Fifth Engine direct drive mode (Motor no-load)
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, and deactivating the first electric machine 2 to establish a fifth engine direct drive mode;
the power transmission route in the driving mode is as follows: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(12) Sixth Engine direct drive mode (Motor No-load)
The fourth clutch 7 and the third clutch 6 are engaged, the first clutch 4 and the second clutch 5 are disengaged, the engine 1 is driven, and the first electric machine 2 is not operated to establish a sixth engine direct drive mode.
The power transmission route in the driving mode is as follows: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
The power transmission routes of the second embodiment in the fourth engine direct drive mode, the fifth engine direct drive mode, and the sixth engine direct drive mode are similar to those of the third embodiment in the fourth engine direct drive mode, the fifth engine direct drive mode, and the sixth engine direct drive mode, and reference is made to fig. 22, 23, and 24 without being separately attached.
The second embodiment is in the fourth engine direct drive mode, the fifth engine direct drive mode, and the sixth engine direct drive mode: the power driving system utilizes the engine 1 to drive the wheels 17, meanwhile, the first motor 2 does not work, and the third clutch 6, the second clutch 4 and the third clutch 5 are switched to realize the output of the engine 1 in the third gear ratio.
Third embodiment
Referring to fig. 4, in this embodiment, a second motor 3 is additionally provided on the basis of the second embodiment, and the second motor 3 is connected to a first input shaft 8, a second input shaft 9, a third input shaft 10 or an output shaft 11; the other structures of the third embodiment are the same as those of the third embodiment, and are not described again here.
When the second motor 3 is connected with the first input shaft 8, the engine 1 can transmit power to the second motor 3 through the first input shaft 8, and the second motor 3 can transmit power to the output shaft 11 through the first input shaft 8 and the first gear set 12 and then to the wheels 17;
when the second motor 3 is connected with the second input shaft 9, the engine 1 can transmit power to the second motor 3 through the second input shaft 9, and the second motor 3 can transmit power to the output shaft 11 through the second input shaft 9 and the second gear set 13 and then to the wheels 17;
when the second motor 3 is connected with the third input shaft 10, the engine 1 can transmit power to the second motor 3 through the third input shaft 10, and the second motor 3 can transmit power to the output shaft 11 through the third input shaft 10 and the third gear set 14 and then to the wheels 17;
when the second electric machine 3 is connected to the output shaft 11, the engine 1 can transmit power to the second electric machine 3 through the output shaft 11, and the second electric machine 3 can transmit power to the output shaft 11 and then to the wheels 17.
The engine 1 and the first motor 2 can both carry out three-gear speed change, the first motor 2 and the second motor 3 can both be used for generating electricity or driving, a pure electric driving mode, a series driving mode, a parallel driving mode and an engine direct driving mode can be realized, multiple driving modes are provided with multiple gears, different driving force requirements of the engine 1 can be met, the engine 1 can work in a region with higher fuel economy as far as possible, the first motor 2 and the second motor 3 can work in a region with higher economy, the problems of engine efficiency and electric balance and high-speed dynamic performance of the engine in low speed and medium and low speed are solved, the working efficiency of the system is high, and the vehicle economy is improved.
The third embodiment provides a power drive system having a plurality of drive modes: pure electric drive mode, series drive mode, parallel drive mode, and engine direct drive mode.
Various preferred drive modes of the power drive system provided by the third embodiment will be described below, taking as an example a case where the second electric machine 3 is connected to the third input shaft 10: 7 pure electric drive modes (first pure electric drive mode, second pure electric drive mode, third pure electric drive mode, fourth pure electric drive mode, fifth pure electric drive mode, sixth pure electric drive mode and seventh pure electric drive mode), series drive mode, 3 parallel drive modes (first parallel drive mode, second parallel drive mode and third parallel drive mode), 6 engine direct drive modes (first engine direct drive mode, second engine direct drive mode, third engine direct drive mode, fourth engine direct drive mode, fifth engine direct drive mode and sixth engine direct drive mode). The operation logic in each driving mode is shown in table 3.
Table 3 table of operation logic in each driving mode (third embodiment)
Figure BDA0001848727090000121
Figure BDA0001848727090000131
The power transmission routes in the respective drive modes will be described in detail below with reference to fig. 8 to 24, in which the first clutch 4, the second clutch 5, the third clutch 6, the fourth clutch 7, the first gear set 12, the second gear set 13, and the third gear set 14 are further denoted by C1, C2, C3, C4, GS1, GS2, and GS3, respectively, in fig. 8 to 24.
(1) First pure electric drive mode
The first clutch 4 is connected, the second clutch 5, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 does not work, so that a first pure electric driving mode is established;
referring to fig. 8, the power transmission route in the driving mode is: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(2) Second pure electric drive mode
The second clutch 5 is connected, the first clutch 4, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 does not work, so that a second pure electric driving mode is established;
referring to fig. 9, the power transmission route in the driving mode is: the first electric machine 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(3) Third pure electric drive mode
The third clutch 6 is connected, the first clutch 4, the second clutch 5 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 does not work, so that a third pure electric driving mode is established;
referring to fig. 10, the power transmission route in the driving mode is: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
Under first pure electric drive mode, second pure electric drive mode and third pure electric drive mode: the power driving system utilizes the first motor 2 to drive the wheels 17, simultaneously the engine 1 and the second motor 3 do not work, and the third-gear speed ratio output of the first motor 2 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6.
(4) Fourth pure electric drive mode
The first clutch 4, the second clutch 5, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 does not work, and the second motor 3 drives to establish a fourth pure electric driving mode;
referring to fig. 11, the power transmission route in the driving mode is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11.
In a fourth pure electric drive mode: the power driving system drives the wheels 17 by using the second motor 3, and simultaneously the engine 1 and the first motor 2 do not work, so that the first gear speed ratio output of the second motor 3 is realized.
(5) Fifth pure electric drive mode
The first clutch 4 is connected, the second clutch 5, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 drives, so that a fifth pure electric driving mode is established;
referring to fig. 12, the power transmission route 1 in the driving mode is: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission route 2 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11.
(6) Sixth pure electric drive mode
The second clutch 5 is connected, the first clutch 4, the third clutch 6 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 drives, so that a sixth pure electric driving mode is established;
referring to fig. 13, the power transmission route 1 in the driving mode is: the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission route 2 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11.
(7) Seventh pure electric drive mode
The third clutch 6 is connected, the first clutch 4, the second clutch 5 and the fourth clutch 7 are disconnected, the engine 1 does not work, the first motor 2 drives, and the second motor 3 drives, so that a seventh pure electric driving mode is established;
referring to fig. 14, the power transmission route 1 in the driving mode is: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission route 2 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11.
Under fifth pure electric drive mode, sixth pure electric drive mode and seventh pure electric drive mode: the power driving system utilizes the first motor 2 to drive and the second motor 3 to drive the wheels 17 together, meanwhile, the engine 1 does not work, the third gear speed ratio output of the first motor 2 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6, and the second motor 3 only outputs in the first gear speed ratio.
(8) Series drive mode
Engaging the fourth clutch 7, disengaging the first clutch 4, the second clutch 5 and the third clutch 6, driving the engine 1, generating power by the first motor 2, and driving the second motor 3 to establish a series driving mode;
referring to fig. 15, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first electric machine 2;
the power transmission route 2 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11.
In the series drive mode, the power drive system drives the wheels 17 with the second electric machine 3, while the engine 1 drives the first electric machine 2 to generate electricity.
(9) First parallel driving mode
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, driving or not operating the first motor 2, and driving the second motor 3 to establish a first parallel driving mode;
referring to fig. 16, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission route 2 is: the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission line 3 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11;
at least one of the power transmission lines 2 and 3 is present.
(10) Second parallel drive mode
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, driving or not operating the first motor 2, and driving the second motor 3 to establish a second parallel driving mode;
referring to fig. 17, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission route 2 is: the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission line 3 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11;
at least one of the power transmission lines 2 and 3 is present.
(11) Third parallel drive mode
Engaging the fourth clutch 7 and the third clutch 6, disengaging the first clutch 4 and the second clutch 5, driving the engine 1, driving or not operating the first motor 2, and driving the second motor 3 to establish a third parallel driving mode;
referring to fig. 18, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission route 2 is: the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission line 3 is: the second motor 3 > the third input shaft 10 > the third gear set 14 > the output shaft 11;
at least one of the power transmission lines 2 and 3 is present.
In a first parallel drive mode, a second parallel drive mode, and a third parallel drive mode: the power driving system is driven by the engine 1 and at least one of the first motor 2 and the second motor 3 together, and the third-gear speed ratio output of the engine 1 or the coupling power of the engine 1 and the first motor 2 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6.
(12) First Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, and generating power in at least one of the first electric machine 2 and the second electric machine 3 to establish a first engine direct drive mode;
referring to fig. 19, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2;
the power transmission line 3 is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11- > the third gear set 14- > the third input shaft 10- > the second motor 3;
at least one of the power transmission lines 2 and 3 is present.
(13) Second Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, and generating electricity in at least one of the first electric machine 2 and the second electric machine 3 to establish a second engine direct drive mode;
referring to fig. 20, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2;
the power transmission line 3 is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11- > the third gear set 14- > the third input shaft 10- > the second motor 3;
at least one of the power transmission lines 2 and 3 is present.
(14) Third Engine direct drive mode (Motor generating)
Engaging the fourth clutch 7 and the third clutch 6, disengaging the first clutch 4 and the second clutch 5, driving the engine 1, and generating electricity in at least one of the first motor 2 and the second motor 3 to establish a third engine direct drive mode;
referring to fig. 21, the power transmission route 1 in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11;
the power transmission route 2 is: the engine 1- > the fourth clutch 7- > the first electric machine 2;
the power transmission line 3 is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the second motor 3;
at least one of the power transmission lines 2 and 3 is present.
In a first engine direct drive mode, a second engine direct drive mode, and a third engine direct drive mode: the power driving system is driven by the engine 1, meanwhile, the engine 1 drives at least one of the first motor 2 and the second motor 3 to generate power for the battery, and the three-gear speed ratio output of the engine 1 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6; since the first electric machine 2 has a higher power generation efficiency than the second electric machine 3, it is preferable to generate power by the second electric machine 3 only at the time of deceleration braking.
(15) Fourth Engine direct drive mode (Motor no-load)
Engaging the fourth clutch 7 and the first clutch 4, disengaging the second clutch 5 and the third clutch 6, driving the engine 1, and deactivating the first electric machine 2 and the second electric machine 3 to establish a fourth engine direct drive mode;
please refer to fig. 22, the power transmission route in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the first clutch 4- > the first input shaft 8- > the first gear set 12- > the output shaft 11.
(16) Fifth Engine direct drive mode (Motor no-load)
Engaging the fourth clutch 7 and the second clutch 5, disengaging the first clutch 4 and the third clutch 6, driving the engine 1, and deactivating the first electric machine 2 and the second electric machine 3 to establish a fifth engine direct drive mode;
please refer to fig. 23, the power transmission route in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the second clutch 5- > the second input shaft 9- > the second gear set 13- > the output shaft 11.
(17) Sixth Engine direct drive mode (Motor No-load)
Engaging the fourth clutch 7 and the third clutch 6, disengaging the first clutch 4 and the second clutch 5, driving the engine 1, and deactivating the first electric machine 2 and the second electric machine 3 to establish a sixth engine direct drive mode;
please refer to fig. 24, the power transmission route in the driving mode is: the engine 1- > the fourth clutch 7- > the first motor 2- > the third clutch 6- > the third input shaft 10- > the third gear set 14- > the output shaft 11.
In a fourth engine direct drive mode, a fifth engine direct drive mode, and a sixth engine direct drive mode: the power driving system is driven by the engine 1, meanwhile, the first motor 2 and the second motor 3 do not work, and the third-gear speed ratio output of the engine 1 is realized by switching the first clutch 4, the second clutch 5 and the third clutch 6.
Fourth embodiment
Referring to fig. 25, a vehicle 100 according to a fourth embodiment of the present invention includes a power driving system 200 according to the first, second, or third embodiment.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A power driving system is characterized by comprising a first motor, a first clutch, a second clutch, a third clutch, an engine, a fourth clutch, a first input shaft, a second input shaft, a third input shaft, an output shaft, a first gear set, a second gear set and a third gear set;
the engine is connected with the first motor through the fourth clutch, and the first motor is respectively connected with the first input shaft, the second input shaft and the third input shaft through the first clutch, the second clutch and the third clutch; the first input shaft is connected to the output shaft through the first gear set;
the second input shaft is connected to the output shaft through the second gear set;
the third input shaft is connected to the output shaft through the third gear set;
the first gear set, the second gear set and the third gear set correspond to three speed ratios, and the power driving system realizes three speed ratio switching through the first clutch, the second clutch and the third clutch;
the first clutch, the second clutch and the third clutch are integrated three clutches, the first input shaft and the second input shaft are hollow shafts, the first input shaft is rotatably arranged in a shaft hole of the second input shaft, and the third input shaft is rotatably arranged in the shaft hole of the first input shaft.
2. A power drive system according to claim 1, wherein the first gear set comprises a first drive gear provided on the first input shaft and a first driven gear provided on the output shaft, the first drive gear being in mesh with the first driven gear;
the second gear set comprises a second driving gear arranged on the second input shaft and a second driven gear arranged on the output shaft, and the second driving gear is meshed with the second driven gear;
the third gear set comprises a third driving gear arranged on the third input shaft and a third driven gear arranged on the output shaft, and the third driving gear is meshed with the third driven gear.
3. A power drive system according to claim 1, wherein the first clutch, the second clutch and the third clutch are coaxially fixed;
the third clutch is embedded in the first clutch and the second clutch, or the first clutch and the third clutch are embedded in the second clutch.
4. A power drive system according to claim 1, further comprising a second electric machine connected to the first input shaft, the second input shaft, the third input shaft, or the output shaft.
5. The power drive system of claim 1, further comprising a second electric machine coupled to the third input shaft.
6. The power-drive system of claim 1, wherein the power-drive system has a first electric-only drive mode, a second electric-only drive mode, a third electric-only drive mode, a series drive mode, a first parallel drive mode, a second parallel drive mode, a third parallel drive mode, a first engine direct drive mode, a second engine direct drive mode, a third engine direct drive mode, a fourth engine direct drive mode, a fifth engine direct drive mode, and a sixth engine direct drive mode;
engaging the first clutch, disengaging the second clutch, the third clutch and the fourth clutch, deactivating the engine, and driving the first electric machine to establish a first electric-only drive mode;
engaging the second clutch, disengaging the first clutch, the third clutch and the fourth clutch, deactivating the engine, and driving the first motor to establish a second electric-only drive mode;
engaging the third clutch, disengaging the first clutch, the second clutch and the fourth clutch, deactivating the engine, and driving the first motor to establish a third electric-only drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, the first motor driving to establish a first parallel drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, the first motor driving to establish a second parallel drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first motor driving to establish a third parallel drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, the first electric machine generating electricity to establish a first engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, the first electric machine generating electricity to establish a second engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine generating electricity to establish a third engine direct drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first electric machine being inactive to establish a fourth engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first electric machine being inactive to establish a fifth engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine not operating to establish a sixth engine direct drive mode.
7. A powered drive system according to claim 4 or 5 characterised in that the powered drive system has a first pure electric drive mode, a second pure electric drive mode, a third pure electric drive mode, a fourth pure electric drive mode, a fifth pure electric drive mode, a sixth pure electric drive mode, a seventh pure electric drive mode, a series drive mode, a first parallel drive mode, a second parallel drive mode, a third parallel drive mode, a first engine direct drive mode, a second engine direct drive mode, a third engine direct drive mode, a fourth engine direct drive mode, a fifth engine direct drive mode and a sixth engine direct drive mode;
engaging the first clutch, disengaging the second clutch, the third clutch and the fourth clutch, deactivating the engine, activating the first motor, deactivating the second motor, and establishing a first electric-only drive mode;
engaging the second clutch, disengaging the first clutch, the third clutch and the fourth clutch, not operating the engine, driving the first motor, and not operating the second motor to establish a second electric only driving mode;
engaging the third clutch, disengaging the first clutch, the second clutch and the fourth clutch, keeping the engine inoperative, driving the first motor, and keeping the second motor inoperative, to establish a third electric-only drive mode;
disconnecting the first clutch, the second clutch, the third clutch and the fourth clutch, enabling the engine to be out of work, enabling the first motor to be out of work, and enabling the second motor to be driven to establish a fourth pure electric driving mode;
engaging the first clutch, disengaging the second clutch, the third clutch and the fourth clutch, deactivating the engine, driving the first motor, driving the second motor, and establishing a fifth electric-only drive mode;
engaging the second clutch, disengaging the first clutch, the third clutch and the fourth clutch, deactivating the engine, driving the first motor, and driving the second motor to establish a sixth electric drive mode;
engaging the third clutch, disengaging the first clutch, the second clutch and the fourth clutch, deactivating the engine, driving the first motor, driving the second motor, and establishing a seventh electric drive mode;
engaging the fourth clutch, disengaging the first clutch, the second clutch, and the third clutch, the engine driving, the first motor generating electricity, the second motor driving to establish a series drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first motor being driven or not being operated, the second motor being driven to establish a first parallel drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first motor being driven or not being operated, the second motor being driven to establish a second parallel drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine being driven, the first motor being driven or not being operated, the second motor being driven to establish a third parallel drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine driving, at least one of the first electric machine and the second electric machine generating electricity to establish a first engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine driving, and at least one of the first electric machine and the second electric machine generating electricity to establish a second engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, at least one of the first electric machine and the second electric machine generating electricity to establish a third engine direct drive mode;
engaging the fourth clutch and the first clutch, disengaging the second clutch and the third clutch, the engine being driven, the first electric machine and the second electric machine being deactivated to establish a fourth engine direct drive mode;
engaging the fourth clutch and the second clutch, disengaging the first clutch and the third clutch, the engine being driven, the first electric machine and the second electric machine being deactivated to establish a fifth engine direct drive mode;
engaging the fourth clutch and the third clutch, disengaging the first clutch and the second clutch, the engine driving, the first electric machine and the second electric machine not operating to establish a sixth engine direct drive mode.
8. A vehicle comprising a power drive system according to any one of claims 1 to 7.
CN201811284477.1A 2018-10-31 2018-10-31 Power driving system and vehicle Active CN111114280B (en)

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WO2024146207A1 (en) * 2023-01-05 2024-07-11 广州汽车集团股份有限公司 Hybrid power coupling system and vehicle

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JP2009073222A (en) * 2007-09-18 2009-04-09 Toyota Motor Corp Drive control device
CN105715749A (en) * 2014-08-18 2016-06-29 韩培洲 High-gear energy-saving speed changer and hydraulic control system
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