CN114771234A - Dual-motor strong-mixing two-in-one system and control method thereof - Google Patents

Dual-motor strong-mixing two-in-one system and control method thereof Download PDF

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Publication number
CN114771234A
CN114771234A CN202210592496.0A CN202210592496A CN114771234A CN 114771234 A CN114771234 A CN 114771234A CN 202210592496 A CN202210592496 A CN 202210592496A CN 114771234 A CN114771234 A CN 114771234A
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gear
shaft
motor
rotate
output shaft
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CN202210592496.0A
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Chinese (zh)
Inventor
沈无惧
李小康
张志远
赵红昌
徐海林
高航
唐勇
刘行
马志明
叶凡
郭玉成
沈双达
石放辉
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Jiangsu New Energy Vehicle Research Institute Co ltd
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Jiangsu New Energy Vehicle Research Institute Co ltd
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Priority to CN202210592496.0A priority Critical patent/CN114771234A/en
Publication of CN114771234A publication Critical patent/CN114771234A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—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
    • B60K6/442—Series-parallel switching type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration

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

Abstract

The invention discloses a dual-motor forced mixing two-in-one system and a control method thereof, wherein the system comprises an engine, a driving motor, a generator and a gear set; a transmission mechanism is arranged between an input shaft and an output shaft of the engine, a first motor shaft of the driving motor is connected with the input shaft of the engine through the transmission mechanism, and the transmission mechanism comprises a clutch, an intermediate shaft and a gear; the driving motor is connected with the output shaft through the intermediate shaft, the input shaft is connected with a first mechanical pump, and the first mechanical pump is connected with the clutch through the valve block. The output shaft is connected with a second mechanical pump, and the second mechanical pump is divided into a plurality of branch pipes through a valve block to lubricate bearings of gears and shafting. The control method comprises a pure electric mode, a series connection mode, a parallel connection mode, an engine direct connection mode, a parking power generation mode and a braking energy recovery mode. The invention adopts the design of a shared intermediate shaft, and has the advantages of compact structure, small size, light weight, good system rigidity and good NVH performance.

Description

Dual-motor strong-mixing two-in-one system and control method thereof
Technical Field
The invention belongs to the technical field of power system transmission of a hybrid electric vehicle, and particularly relates to a dual-motor forced mixing two-in-one system for realizing two-gear driving of an engine and two-gear switching driving of a motor and a control method thereof.
Background
The hybrid electric vehicle utilizes a battery or an engine to generate power to provide a power source for the motor, and adjusts the working point of the engine through the motor, thereby effectively reducing oil consumption and emission and further improving the dynamic property and the economical efficiency of the whole vehicle. Different hybrid powertrain configurations may implement different torque distribution functions. In the configuration scheme, the hybrid electric vehicle can adopt a single-motor power system configuration or a double-motor power system configuration, and the double-motor power system can realize all hybrid power functions, such as a series function, a parallel function, a series-parallel hybrid function and the like.
Hybrid systems are of a type which is a vehicle structure in the form of a longitudinal rear drive, which means a longitudinal rear drive of an engine, and most of the SUVs adopt a driving mode of the longitudinal rear drive and a non-self-supporting vehicle body structure with a crossbeam. The longitudinal rear-drive has the advantages that: 1) the front-rear weight ratio of the vehicle is close to 50: the golden ratio of 50 has good advantages on the dynamic control of the vehicle body, and can realize neutral steering; 2) the system can provide larger effective traction force and enhance the acceleration capability and the climbing capability of the automobile; 3) the rear drive has stronger controllability than the front drive, more space is provided for using a suspension system, and the support performance of the vehicle is better; 4) the vehicle counterweight is more balanced, the phenomenon of accelerating head raising and braking nod is improved, the whole comfort is stronger, and the reason for adopting the mode by the luxury car is also the reason.
The conventional common longitudinal rear-drive structure is shown in the attached drawing 1 of the specification, and is a longitudinal extended-range hybrid, and has fewer power modes, and a more flexible dual-motor hybrid architecture is urgently needed to be designed in order to more effectively exert the energy consumption economy and the power performance of a hybrid electric vehicle under the working conditions of high and low vehicle speeds.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a novel double-motor longitudinal rear-drive hybrid system, which realizes a highly integrated P1P3 strong-hybrid two-in-one system of an engine, has no power interruption during mode switching, ensures that the driving mode is flexible and comprehensive, has high system efficiency, and can realize pure electricity, range extension, direct drive and series-parallel connection of the engine.
In order to achieve the above object, the present invention provides a dual-motor forced mixing two-in-one system, which comprises an engine, a driving motor, a generator, and a gear set;
a transmission mechanism is arranged between an input shaft and an output shaft of the engine, and comprises a clutch, an intermediate shaft and a gear;
the driving motor is connected with the output shaft through an intermediate shaft,
the input shaft is connected with a first mechanical pump, the first mechanical pump is connected with the clutch through a valve block,
the output shaft is connected with a second mechanical pump, and the second mechanical pump is divided into a plurality of branch pipes through a valve block and used for lubricating bearings of the gear and the shaft system.
In the above two-in-one system with two motors and strong mixing, the transmission mechanism further includes a second gear disposed on the input shaft, an eighth gear disposed on the intermediate shaft, a fifth gear disposed on the clutch, and a ninth gear disposed on the output shaft, wherein the second gear is engaged with the fifth gear, and the eighth gear is engaged with the ninth gear.
In the above two-in-one system for strong mixing of double motors, a sixth gear is arranged on the first motor shaft, a seventh gear is further arranged on the intermediate shaft, and the sixth gear is meshed with the seventh gear; and a fourth gear is arranged on the second motor shaft and meshed with the second gear.
In the above two-in-one system with double motors and strong mixing, the input shaft is further provided with a first gear, the first mechanical pump is connected with a first hydraulic shaft, the first hydraulic shaft is provided with a third gear, and the third gear is meshed with the first gear; the output shaft is connected with a second mechanical pump.
In the above two-in-one system with double motors and strong mixing, the clutch is further provided with a tenth gear, the first mechanical pump is connected with a second hydraulic shaft, the first hydraulic shaft is provided with an eleventh gear, and the eleventh gear is meshed with the tenth gear; the output shaft is also provided with a twelfth gear, the second mechanical pump is connected with a second hydraulic shaft, the second hydraulic shaft is provided with a thirteenth gear, and the twelfth gear is meshed with the thirteenth gear.
In the above two-in-one system with double motors and strong mixing, the valve block is a special-shaped valve block and is arranged at the lower part of the output shaft.
Correspondingly, the control method of the dual-motor forced mixing two-in-one system comprises the following modes:
a pure electric mode; the clutch is disconnected, the driving motor rotates to drive the first motor shaft to rotate, the intermediate shaft is driven to rotate through the sixth gear and the seventh gear, and the output shaft is driven through the eighth gear and the ninth gear;
series mode: the clutch is disconnected, the engine rotates to drive the input shaft to rotate, and the second motor shaft is driven through the second gear and the fourth gear to drive the generator to generate electricity; the electric power of the generator is transmitted to the driving motor, the driving motor rotates to drive the first motor shaft to rotate, the intermediate shaft is driven to rotate through the sixth gear and the seventh gear, and the output shaft is driven through the eighth gear and the ninth gear;
parallel mode: the clutch is closed, the engine rotates to drive the input shaft to rotate, the intermediate shaft is driven to rotate through the second gear and the fifth gear, and the output shaft is driven through the eighth gear and the ninth gear; the driving motor rotates to drive the first motor shaft to rotate, the intermediate shaft is driven to rotate through the sixth gear and the seventh gear, and the output shaft is driven through the eighth gear and the ninth gear;
engine direct-coupled mode: the clutch is closed, the engine rotates to drive the input shaft to rotate, the intermediate shaft is driven to rotate through the second gear and the fifth gear, and the output shaft is driven through the eighth gear and the ninth gear;
in the parking power generation mode, the clutch is disconnected, the engine rotates to drive the input shaft to rotate, and the second gear and the fourth gear drive the second motor shaft to drive the generator to generate power;
a braking energy recovery mode: the clutch is disconnected, the output shaft drives the intermediate shaft to rotate through the ninth gear and the eighth gear, the seventh gear and the sixth gear drive the first motor shaft, and the motor is driven to generate electricity.
The invention has the beneficial effects that:
1. the dual-motor forced mixing two-in-one system is a highly integrated P1P3 forced mixing two-in-one system, and compared with a traditional longitudinal rear-drive mixing system, the system can realize three functions of pure electricity, direct drive of the motor, parallel mode and the like besides the functions of series drive and parking power generation. Through the connection of each working mode and no power interruption, the system is suitable for passenger vehicles, covers various urban road conditions and urban elevated highways, and improves the economy;
2. the invention adopts the design of a shared intermediate shaft, and has compact structure, small size, light weight, good system rigidity and good NVH performance;
3. the invention has no TCU control unit, saves cost and has simple control;
4. the invention is provided with two mechanical pumps which are respectively provided with power by the input shaft and the output shaft, thereby improving the utilization rate of the power and the lubricating effect of the gearbox.
Drawings
Fig. 1 is a schematic structural diagram of a conventional longitudinal rear-drive hybrid system described in the background art;
fig. 2 is a schematic structural diagram of a first embodiment of the dual-motor forced mixing two-in-one system according to the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the dual-motor forced mixing two-in-one system according to the present invention;
FIG. 4 is a schematic diagram of a power transmission route of the dual-motor forced mixing two-in-one system of the present invention in a pure electric mode;
FIG. 5 is a schematic diagram of a power transmission route of the dual-motor forced mixing two-in-one system of the present invention in a series mode;
FIG. 6 is a schematic diagram of a power transmission route of the dual-motor forced mixing two-in-one system of the present invention in a parallel mode;
FIG. 7 is a schematic diagram of a power transmission route of a dual-motor forced mixing two-in-one system of the present invention in a direct engine coupling mode;
FIG. 8 is a schematic diagram of a power transmission route of the dual-motor forced mixing two-in-one system in a parking power generation mode according to the present invention;
fig. 9 is a schematic diagram of a power transmission route of the dual-motor strong-mixing two-in-one system in the braking energy recovery mode.
In the figure: 1. an engine; 2. a drive motor; 3. a generator; 4. an input shaft; 5. a first motor shaft; 6. an intermediate shaft; 7. a second motor shaft; 8. a first hydraulic shaft; 9. a gear set; 901. a first gear; 902. a second gear; 903. a third gear; 904. a fourth gear; 905. a fifth gear; 906. a sixth gear; 907. a seventh gear; 908. an eighth gear; 909. a ninth gear; 910. a tenth gear; 911. an eleventh gear; 912. a twelfth gear; 913. a thirteenth gear; 10. an output shaft; 11. a valve block; 12. a first mechanical pump; 13. a second mechanical pump; 14. a second hydraulic shaft.
Detailed Description
The following description of the preferred embodiments of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the preferred embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
The first embodiment is as follows:
as shown in fig. 2, a dual-motor forced mixing two-in-one system includes an engine 1, a driving motor 2, a generator 3, and a gear set 9. A transmission mechanism is arranged between an input shaft 4 and an output shaft 10 of the engine 1, and comprises a clutch, an intermediate shaft 6 and a gear. The driving motor 2 is connected with the output shaft 10 through an intermediate shaft 6. The design of a shared intermediate shaft is adopted, so that the structure is compact, the size is small, the weight is light, the system rigidity is good, and the NVH performance is good. And a TCU control unit is not arranged, so that the cost is saved and the control is simple.
The input shaft 4 is connected with a first mechanical pump 12, and the first mechanical pump 12 is connected with the clutch through a valve block 11. The output shaft 10 is connected with a second mechanical pump 13, and the second mechanical pump 13 is divided into a plurality of branch pipes through a valve block 11 and used for lubricating bearings of gears and shafting. The two mechanical pumps are respectively powered by the input shaft and the output shaft, so that the utilization rate of power and the lubricating effect of the gearbox are improved. The input shaft 4 is also provided with a first gear 901, the first mechanical pump 12 is connected with a first hydraulic shaft 8, the first hydraulic shaft 8 is provided with a third gear 903, and the third gear 903 is meshed with the first gear 901; a second mechanical pump 13 is connected to the output shaft 10.
The transmission mechanism further comprises a second gear 902 arranged on the input shaft 4, an eighth gear 908 arranged on the intermediate shaft 6, a fifth gear 905 arranged on the clutch, and a ninth gear 909 arranged on the output shaft 10, wherein the second gear 902 is meshed with the fifth gear 905, and the eighth gear 908 is meshed with the ninth gear 909.
A sixth gear 906 is arranged on the first motor shaft 5, a seventh gear 907 is further arranged on the intermediate shaft 6, and the sixth gear 906 is meshed with the seventh gear 907; the second motor shaft 7 is provided with a fourth gear 904, and the fourth gear 904 is meshed with the second gear 902.
Correspondingly, the control method of the dual-motor forced mixing two-in-one system comprises the following modes:
a pure electric mode; the clutch is disconnected, the driving motor 2 rotates to drive the first motor shaft 5 to rotate, the intermediate shaft 6 is driven to rotate through the sixth gear 906 and the seventh gear 907, and the output shaft 10 is driven through the eighth gear 908 and the ninth gear 909;
series mode: the clutch is disconnected, the engine 1 rotates to drive the input shaft 4 to rotate, and the second gear 902 and the fourth gear 904 drive the second motor shaft 7 to drive the generator 3 to generate electricity; the electric power of the generator 3 is transmitted to the driving motor 2, the driving motor 2 rotates to drive the first motor shaft 5 to rotate, the intermediate shaft 6 is driven to rotate through the sixth gear 906 and the seventh gear 907, and the output shaft 10 is driven through the eighth gear 908 and the ninth gear 909;
parallel mode: the clutch is closed, the engine 1 rotates to drive the input shaft 4 to rotate, the intermediate shaft 6 is driven to rotate through the second gear 902 and the fifth gear 905, and the output shaft 10 is driven through the eighth gear 908 and the ninth gear 909; the driving motor 2 rotates to drive the first motor shaft 5 to rotate, the intermediate shaft 6 is driven to rotate through the sixth gear 906 and the seventh gear 907, and the output shaft 10 is driven through the eighth gear 908 and the ninth gear 909;
engine 1 direct mode: the clutch is closed, the engine 1 rotates to drive the input shaft 4 to rotate, the intermediate shaft 6 is driven to rotate through the second gear 902 and the fifth gear 905, and the output shaft 10 is driven through the eighth gear 908 and the ninth gear 909;
in the parking power generation mode, the clutch is disconnected, the engine 1 rotates to drive the input shaft 4 to rotate, and the second gear 902 and the fourth gear 904 drive the second motor shaft 7 to drive the generator 3 to generate power;
braking energy recovery mode: the clutch is disconnected, the output shaft 10 drives the intermediate shaft 6 to rotate through the ninth gear 909 and the eighth gear 908, the first motor shaft 5 is driven through the seventh gear 907 and the sixth gear 906, and the electric drive motor 2 generates electricity.
Example two:
as shown in fig. 3, the other parts are the same as the first embodiment except for the way in which the first mechanical pump and the second mechanical pump are connected to the input shaft and the output shaft.
The clutch is also provided with a tenth gear 910, the first mechanical pump 12 is connected with a second hydraulic shaft 14, the first hydraulic shaft 8 is provided with an eleventh gear 911, and the eleventh gear 911 is meshed with the tenth gear 910; the output shaft 10 is further provided with a twelfth gear 912, the second mechanical pump 13 is connected to a second hydraulic shaft 14, the second hydraulic shaft 14 is provided with a thirteenth gear 913, and the twelfth gear 912 meshes with the thirteenth gear 913. The valve block 11 is a special-shaped valve block 11 and is arranged at the lower part of the output shaft 10.
The working principle of the invention is as follows:
the invention adopts the design of the shared intermediate shaft 6, and has compact structure, small size, light weight, good system rigidity and good NVH performance; and a TCU control unit is omitted, so that the cost is saved and the control is simple. In the lubricating mode, the two mechanical pumps are matched with the valve block 11 on the side surface of the shaft system of the output shaft 10 or the special-shaped valve block 11 at the bottom, so that the clutch and the lubricating cooling can be effectively realized. Wherein the input shaft 4 of the engine 1 provides the hydraulic oil power required by the clutch, and the output shaft 10 provides the cooling lubricating oil required by each bearing and gear.
The invention comprises the following working modes:
1. pure electric mode: as shown in fig. 4, when the vehicle starts or runs at a low speed, the driving motor 2 directly drives the entire vehicle, at this time, the clutch is disconnected, and power is transmitted from the driving motor 2 to the output shaft 10 through the first motor shaft 5, the sixth gear 906, the seventh gear 907, the intermediate shaft 6, the eighth gear 908 and the ninth gear 909, so that certain economy and dynamic performance of the entire vehicle are ensured;
2. series mode: as shown in fig. 5, when the SOC of the battery of the vehicle is lower than a threshold value at a certain speed, the clutch is disconnected, and at this time, the engine 1 is in a state of driving the generator 3 to generate electricity, and the power of the engine 1 is transmitted to the generator 3 through the input shaft 4, the second gear 902, the fourth gear 904 and the second motor shaft 7; the power is transmitted from the driving motor 2 to the output shaft 10 through the first motor shaft 5, the sixth gear 906, the seventh gear 907, the intermediate shaft 6, the eighth gear 908 and the ninth gear 909, and the driving motor 2 electrically drives the whole vehicle;
3. parallel mode: as shown in fig. 6, when the vehicle is in some conditions of rapid acceleration, overtaking or high-torque starting, the engine 1 is directly involved in driving, the generator 3 is not involved in driving or generating electricity, and the driving motor 2 is involved in auxiliary driving. At the moment, the clutch is closed, and the power of the engine 1 is transmitted to the output shaft 10 through the input shaft 4, the second gear 902, the fifth gear 905, the intermediate shaft 6, the eighth gear 908 and the ninth gear 909; the driving motor 2 realizes that two power sources participate in driving together through a first motor shaft 5, a sixth gear 906, a seventh gear 907, an intermediate shaft 6, an eighth gear 908 and a ninth gear 909 to an output shaft 10, and strong dynamic performance is brought to a vehicle.
4. Engine 1 direct coupled mode: as shown in fig. 7, when the vehicle reaches a certain high speed section, the clutch is closed, and the power of the engine 1 is transmitted to the output shaft 10 through the input shaft 4, the second gear 902, the fifth gear 905, the intermediate shaft 6, the eighth gear 908 and the ninth gear 909, so as to ensure the dynamic property of the whole vehicle;
5. in the parking power generation mode, as shown in fig. 8, when the vehicle is parked, the clutch is disconnected, the engine 1 is in a state of driving the generator 3 to generate power, the power of the engine 1 is transmitted to the generator 3 through the input shaft 4, the second gear 902, the fourth gear 904 and the second motor shaft 7, the engine 1 works in a high-efficiency area to drive the generator 3 to generate power, and the driving motor 2 is in a state of zero torque and zero rotating speed;
6. a braking energy recovery mode: as shown in fig. 9, when the vehicle is braked, the clutch is disengaged, the torque of the output shaft 10 is transmitted to the driving motor 2 through the ninth gear 909, the eighth gear 908, the intermediate shaft 6, the seventh gear 907, the sixth gear 906, and the first motor shaft 5, and the driving motor 2 recovers energy to generate electricity.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.

Claims (7)

1. A dual-motor forced mixing two-in-one system comprises an engine (1), a driving motor (2), a generator (3) and a gear set (9);
the method is characterized in that: a transmission mechanism is arranged between an input shaft (4) and an output shaft (10) of the engine (1), and comprises a clutch, an intermediate shaft (6) and a gear;
the driving motor (2) is connected with the output shaft (10) through an intermediate shaft (6),
the input shaft (4) is connected with a first mechanical pump (12), the first mechanical pump (12) is connected with a clutch through a valve block (11),
the output shaft (10) is connected with a second mechanical pump (13), and the second mechanical pump (13) is divided into a plurality of branch pipes through a valve block (11) and used for lubricating bearings of gears and shafting.
2. The dual-motor intensive mixing two-in-one system as claimed in claim 1, wherein: the transmission mechanism further comprises a second gear (902) arranged on the input shaft (4), an eighth gear (908) arranged on the intermediate shaft (6), a fifth gear (905) arranged on the clutch and a ninth gear (909) arranged on the output shaft (10), wherein the second gear (902) is meshed with the fifth gear (905), and the eighth gear (908) is meshed with the ninth gear (909).
3. The dual-motor intensive mixing two-in-one system as claimed in claim 2, wherein: a sixth gear (906) is arranged on the first motor shaft (5), a seventh gear (907) is further arranged on the intermediate shaft (6), and the sixth gear (906) is meshed with the seventh gear (907); and a fourth gear (904) is arranged on the second motor shaft (7), and the fourth gear (904) is meshed with the second gear (902).
4. The dual-motor forced mixing two-in-one system as claimed in claim 3, wherein: the input shaft (4) is also provided with a first gear (901), the first mechanical pump (12) is connected with a first hydraulic shaft (8), the first hydraulic shaft (8) is provided with a third gear (903), and the third gear (903) is meshed with the first gear (901); the output shaft (10) is connected with a second mechanical pump (13).
5. The dual-motor forced mixing two-in-one system as claimed in claim 3, wherein: the clutch is also provided with a tenth gear (910), the first mechanical pump (12) is connected with a second hydraulic shaft (14), the first hydraulic shaft (8) is provided with an eleventh gear (911), and the eleventh gear (911) is meshed with the tenth gear (910); the output shaft (10) is further provided with a twelfth gear (912), the second mechanical pump (13) is connected with a second hydraulic shaft (14), the second hydraulic shaft (14) is provided with a thirteenth gear (913), and the twelfth gear (912) is meshed with the thirteenth gear (913).
6. The control method of the dual-motor strong-mixing two-in-one system according to claim 5, characterized in that: the valve block (11) is a special-shaped valve block (11) and is arranged on the lower portion of the output shaft (10).
7. The control method of the dual-motor strong-mixing two-in-one system according to any one of claims 1 to 6, characterized in that: the method comprises the following modes:
a pure electric mode; the clutch is disconnected, the driving motor (2) rotates to drive the first motor shaft (5) to rotate, the intermediate shaft (6) is driven to rotate through the sixth gear (906) and the seventh gear (907), and the output shaft (10) is driven through the eighth gear (908) and the ninth gear (909);
series mode: the clutch is disconnected, the engine (1) rotates to drive the input shaft (4) to rotate, and the second gear (902) and the fourth gear (904) drive the second motor shaft (7) to drive the generator (3) to generate electricity; the electric power of the generator (3) is transmitted to the driving motor (2), the driving motor (2) rotates to drive the first motor shaft (5) to rotate, the intermediate shaft (6) is driven to rotate through the sixth gear (906) and the seventh gear (907), and the output shaft (10) is driven through the eighth gear (908) and the ninth gear (909);
parallel mode: the clutch is closed, the engine (1) rotates to drive the input shaft (4) to rotate, the intermediate shaft (6) is driven to rotate through the second gear (902) and the fifth gear (905), and the output shaft (10) is driven through the eighth gear (908) and the ninth gear (909); the driving motor (2) rotates to drive the first motor shaft (5) to rotate, the intermediate shaft (6) is driven to rotate through the sixth gear (906) and the seventh gear (907), and the output shaft (10) is driven through the eighth gear (908) and the ninth gear (909);
engine (1) direct coupled mode: the clutch is closed, the engine (1) rotates to drive the input shaft (4) to rotate, the intermediate shaft (6) is driven to rotate through the second gear (902) and the fifth gear (905), and the output shaft (10) is driven through the eighth gear (908) and the ninth gear (909);
in a parking power generation mode, the clutch is disconnected, the engine (1) rotates to drive the input shaft (4) to rotate, and the second motor shaft (7) is driven through the second gear (902) and the fourth gear (904) to drive the generator (3) to generate power;
a braking energy recovery mode: the clutch is disconnected, the output shaft (10) drives the intermediate shaft (6) to rotate through the ninth gear (909) and the eighth gear (908), the first motor shaft (5) is driven through the seventh gear (907) and the sixth gear (906), and the electric driving motor (2) generates electricity.
CN202210592496.0A 2022-05-27 2022-05-27 Dual-motor strong-mixing two-in-one system and control method thereof Withdrawn CN114771234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210592496.0A CN114771234A (en) 2022-05-27 2022-05-27 Dual-motor strong-mixing two-in-one system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210592496.0A CN114771234A (en) 2022-05-27 2022-05-27 Dual-motor strong-mixing two-in-one system and control method thereof

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CN114771234A true CN114771234A (en) 2022-07-22

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