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CN116852972A - Single-clutch double-motor multi-gear hybrid power driving system, method and vehicle - Google Patents

Single-clutch double-motor multi-gear hybrid power driving system, method and vehicle Download PDF

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Publication number
CN116852972A
CN116852972A CN202210311052.5A CN202210311052A CN116852972A CN 116852972 A CN116852972 A CN 116852972A CN 202210311052 A CN202210311052 A CN 202210311052A CN 116852972 A CN116852972 A CN 116852972A
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CN
China
Prior art keywords
motor
gear
clutch
speed
torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210311052.5A
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Chinese (zh)
Inventor
卢立来
王宾宾
彭凯
郑宝均
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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Publication date
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Priority to CN202210311052.5A priority Critical patent/CN116852972A/en
Publication of CN116852972A publication Critical patent/CN116852972A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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 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
    • 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
    • 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 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 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 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; 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
    • B60K6/20—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 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 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
    • 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 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
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • 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
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • 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
    • 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
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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

Abstract

The invention discloses a single clutch double-motor multi-gear hybrid power driving system which can realize the functions of pure electric driving, serial driving, parallel driving, speed regulation, gear shifting and the like by using only one clutch. Compared with an EDU GEN1 system, the invention cancels the clutch at the end of the driving TM motor, realizes the accurate speed regulation and gear shifting of the TM motor by control, not only realizes various mode functions of the hybrid system, but also reduces the cost of the power system. Compared with a public P2 system, the invention can realize series connection high-efficiency charging and driving, has better drivability and economy at low speed and low electric quantity, can also utilize a single motor to start the engine, and avoids the drivability problem of the P2 system during the skid and ground start. Compared with a relatively Addi P3 system, the motor is arranged at the front end of the gearbox, the gearbox can be used for realizing gear shifting, and the pure electric vehicle has better economical efficiency and dynamic property. The invention also discloses a vehicle and a single clutch double-motor multi-gear hybrid power driving method applying the system.

Description

Single-clutch double-motor multi-gear hybrid power driving system, method and vehicle
Technical Field
The invention relates to the technical field of control of a power system of a new energy automobile, in particular to a single-clutch double-motor multi-gear hybrid power driving system, a single-clutch double-motor multi-gear hybrid power driving method and a vehicle.
Background
Energy conservation and environmental protection are the main trend of the current automobile development, and new energy is a key technology for realizing energy conservation and environmental protection. The current mainstream mixing technology can be divided according to series connection, parallel connection and series-parallel connection, and also can be divided according to the number and arrangement positions of motors and the number and arrangement positions of clutches.
A single motor hybrid system typically represents a system including the mass P2 system, the bi di P3 system. The public P2 system is based on a double-clutch gearbox, a driving motor and a K0 clutch are additionally arranged between an engine and the gearbox, and a Biedi P3 system motor is arranged at the tail end of the double-clutch gearbox, so that modes of pure electric driving, engine starting by sliding and grinding, parallel driving and the like can be realized. The two-motor hybrid system typically includes a Toyota THS system, a general purpose Volt system, a Nissan e-POWER, a Honda I-MMD system, and an upper steam EDU GEN1 system. The Toyota THS system and the general Volt system adopt a planetary gear POWER coupling scheme, daily yield e-POWER is a series scheme, and the Toyota I-MMD and steam-feeding EDU GEN1 system are series-parallel schemes which can be connected in series as well as in parallel.
Disclosure of Invention
In view of the above, the invention provides a single clutch double motor multi-gear hybrid power driving system, which is a compact and efficient hybrid power system scheme and can reduce the cost of a power system.
The invention also provides a single clutch double motor multi-gear hybrid power driving method and a vehicle applying the system.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a single clutch, dual motor, multi-speed hybrid drive system comprising: the device comprises an engine, a first motor, a clutch, a second motor and a transmission assembly;
the transmission assembly includes: an input shaft, an output shaft and a speed change gear pair;
the engine and the first motor are connected with an active disc of the clutch, a passive disc of the clutch is connected with a first end of the input shaft, and the second motor is connected with a second end of the input shaft;
a plurality of pairs of speed change gear pairs are disposed between the input shaft and the output shaft.
Preferably, the output shaft of the second motor is directly connected to the second end of the input shaft.
Preferably, the transmission assembly further comprises: a synchronizer;
the speed change gear pair includes: a first gear, a second gear, a third gear, and a fourth gear;
the first gear and the second gear are sleeved on the input shaft; the synchronizer is arranged on the input shaft and is used for being connected with the first gear or the second gear;
the third gear and the fourth gear are fixedly connected to the output shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear.
Preferably, the method further comprises: a differential;
the output shaft is fixedly connected with a fifth gear, and the fifth gear is meshed with an input gear of the differential mechanism.
A vehicle comprising a single clutch, two-motor, multi-speed hybrid drive system as described above.
A single clutch double motor multi-gear hybrid power driving method, which adopts the single clutch double motor multi-gear hybrid power system, the method at least comprises the following steps:
a pure electric drive mode, wherein the clutch is controlled to be opened, and torque is distributed to the second motor to output power according to the requirement of a driver;
and the parallel driving mode is used for controlling the clutch to be closed and distributing torque to the engine, the first motor and the second motor to output power according to a control strategy.
Preferably, in the pure electric mode, the upshifting step includes:
s1, removing torque of the second motor to zero torque;
s2, controlling the synchronizer to move down;
s3, controlling the second motor to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor to a high-grade rotating speed;
s5, controlling the synchronizer to enter a high gear;
s6, the second motor is twisted up to the driving required torque.
Preferably, in the step S4, the rotation speed of the second motor is adjusted to a positive delta rotation speed interval and a negative delta rotation speed interval of the high gear rotation speed, wherein delta is a calibration value.
Preferably, in the parallel driving mode, the upshifting step includes:
s1, discharging the torque of the second motor to zero torque, and simultaneously discharging the torque of the engine and the torque of the first motor to zero torque;
s2, opening the clutch and controlling the synchronizer to move down;
s3, controlling the second motor to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor to a high-grade rotating speed;
s5, controlling the synchronizer to enter a high gear;
s6, the second motor is twisted up to the driving required torque, the clutch is closed, and the engine and the first motor are twisted up to the driving required torque.
Preferably, in the step S4, the rotation speed of the second motor is adjusted to a positive delta rotation speed interval and a negative delta rotation speed interval of the high gear rotation speed, wherein delta is a calibration value.
According to the technical scheme, the single-clutch double-motor multi-gear hybrid power driving system provided by the invention can realize the functions of pure electric driving, serial driving, parallel driving, speed regulation and gear shifting and the like by only using one clutch. Compared with an EDU GEN1 system, the invention cancels the clutch at the end of the driving TM motor, realizes the accurate speed regulation and gear shifting of the TM motor by control, not only realizes various mode functions of the hybrid system, but also reduces the cost of the power system. Compared with a public P2 system, the invention can realize series connection high-efficiency charging and driving, has better drivability and economy at low speed and low electric quantity, can also utilize a single motor to start the engine, and avoids the drivability problem of the P2 system during the skid and ground start. Compared with a relatively Addi P3 system, the motor is arranged at the front end of the gearbox, the gearbox can be used for realizing gear shifting, and the pure electric vehicle has better economical efficiency and dynamic property.
The embodiment of the invention also provides a vehicle and single-clutch double-motor multi-gear hybrid power driving method, and the single-clutch double-motor multi-gear hybrid power driving system has corresponding beneficial effects because the single-clutch double-motor multi-gear hybrid power driving system is adopted, and the description can be referred to in the prior art, and the description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a single clutch dual-motor multi-gear hybrid power driving system according to an embodiment of the invention.
Wherein 1 is the engine, 2 is the first motor, 3 is the clutch, 4 is the synchronous ware, 5 is the second motor, 6 is the differential mechanism, 7 is the input shaft, 8 is the output shaft, 9 is the wheel, 11 is first gear, 12 is the second gear, 13 is the third gear, 14 is the fourth gear, 15 is the fifth gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a single clutch double motor multi-gear hybrid power driving system, which comprises: an engine 1, a first motor 2, a clutch 3, a second motor 5 and a transmission assembly; the structure of which can be seen with reference to figure 1;
wherein, drive assembly includes: an input shaft 7, an output shaft 8 and a speed change gear pair;
the engine 1 and the first motor 2 are connected to an active disc of the clutch 3, a passive disc of the clutch 3 is connected to a first end of the input shaft 7, and the second motor 5 is connected to a second end of the input shaft 7;
a plurality of pairs of speed change gear pairs are provided between the input shaft 7 and the output shaft 8.
According to the technical scheme, the single-clutch double-motor multi-gear hybrid power driving system provided by the embodiment of the invention can realize the functions of pure electric driving, serial driving, parallel driving, speed regulation and gear shifting and the like by only using one clutch 3. Compared with an EDU GEN1 system, the invention cancels the clutch at the end of the second motor 5, realizes the accurate speed regulation and gear shifting of the second motor 5 by control, not only realizes various mode functions of the hybrid system, but also reduces the cost of the power system. Compared with a public P2 system, the invention can realize series connection high-efficiency charging and driving, has better drivability and economy at low speed and low electric quantity, can also utilize a single motor to start the engine, and avoids the drivability problem of the P2 system during the skid and ground start. Compared with a relatively Addi P3 system, the motor is arranged at the front end of the gearbox, the gearbox can be used for realizing gear shifting, and the pure electric vehicle has better economical efficiency and dynamic property.
Preferably, the output shaft of the second motor 5 is directly connected to the second end of the input shaft 7. That is, the output of the second motor 5 is directly transmitted to the input shaft 7, so that the power transmission path is simplified, the integration level of the system is improved, and the structure is more compact.
Specifically, the transmission assembly may employ a two-speed AMT gearbox comprising two pairs of speed change gear pairs. The structure of which can be seen with reference to fig. 1, the transmission assembly further comprises: a synchronizer 4;
the speed change gear pair includes: a first gear 11, a second gear 12, a third gear 13 and a fourth gear 14;
the first gear 11 and the second gear 12 are sleeved on the input shaft 7; the synchronizer 4 is arranged on the input shaft 7 and is used for being connected with the first gear 11 or the second gear 12;
the third gear 13 and the fourth gear 14 are fixedly connected to the output shaft 8, the third gear 13 is meshed with the first gear 11, and the fourth gear 14 is meshed with the second gear 12. The scheme adopts a simpler transmission assembly, can realize the functions of pure electric, serial connection, parallel running and the like, and has obvious advantages in control and cost. Of course, the transmission assembly can be further provided with more pairs of speed change gear pairs so as to realize speed change transmission with more gears, and the details are not repeated here.
The single clutch double motor multi-gear hybrid power driving system provided by the embodiment of the invention further comprises: a differential 6; the structure of which can be seen with reference to figure 1;
the output shaft 8 is fixedly connected with a fifth gear 15, which fifth gear 15 meshes with the input gear of the differential 6. The power of the scheme drives wheels 9 to rotate through the differential mechanism 6 by the output shaft 8.
The embodiment of the invention also provides a vehicle which comprises the single-clutch double-motor multi-gear hybrid power driving system. The vehicle provided by the scheme has the corresponding beneficial effects due to the adoption of the single-clutch double-motor multi-gear hybrid power driving system, and the vehicle can be specifically described with reference to the previous description and is not repeated here.
The embodiment of the invention also provides a single clutch double-motor multi-gear hybrid power driving method, which adopts the single clutch double-motor multi-gear hybrid power system, and at least comprises the following steps:
in the pure electric mode, the clutch 3 is controlled to be opened, and torque is distributed to the second motor 5 to output power according to the requirement of a driver;
in the parallel drive mode, the clutch 3 is controlled to be closed, and torque is distributed to the engine 1, the first motor 2 and the second motor 5 to output power according to a control strategy.
The single clutch double-motor multi-gear hybrid power driving method provided by the scheme has the corresponding beneficial effects due to the adoption of the single clutch double-motor multi-gear hybrid power system, and the description can be referred to in the prior art, and the description is omitted.
Specifically, in the pure electric mode, the upshift step includes:
s1, removing the torque of the second motor 5 to zero torque;
s2, controlling the synchronizer 4 to move down;
s3, controlling the second motor 5 to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor 5 to a high-grade rotating speed;
s5, controlling the synchronizer 4 to enter a high gear;
s6, the second motor 5 is twisted up to the driving requirement torque.
Namely, in the pure electric driving process, the second motor 5 can realize accurate speed regulation and gear shifting through control.
Further, in step S4, the rotation speed of the second motor 5 is adjusted to a plus-minus delta rotation speed interval of the high gear rotation speed to optimize the gear shifting process; wherein delta is a calibrated value, e.g., 20rpm.
Specifically, in the parallel driving mode, the upshifting step includes:
s1, removing the torque of the second motor 5 to zero torque, and simultaneously removing the torque of the engine 1 and the torque of the first motor 2 to zero torque;
s2, opening the clutch 3, and controlling the synchronizer 4 to move down;
s3, controlling the second motor 5 to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor 5 to a high-grade rotating speed;
s5, controlling the synchronizer 4 to enter a high gear;
s6, the second motor 5 is twisted up to the driving required torque, the clutch 3 is closed, and the engine 1 and the first motor 2 are twisted up to the driving required torque.
Namely, in the parallel running process, the accurate speed regulation and gear shifting of the engine 1, the first motor 2 and the second motor 5 are realized through control.
Further, in step S4, the rotation speed of the second motor 5 is adjusted to a plus-minus delta rotation speed interval of the high gear rotation speed to optimize the gear shifting process; wherein delta is a calibrated value, e.g., 20rpm.
Of course, the present solution also includes other modes of operation and shifting (e.g., downshifting), which are not described herein.
The present solution is further described below in connection with specific embodiments:
referring to the system configuration of fig. 1, a TM drive motor (i.e., the aforementioned second motor, the same applies hereinafter) is directly connected to the input shaft, and an engine and an ISG motor (i.e., the aforementioned first motor, the same applies hereinafter) are connected to the input shaft via a clutch. The input shaft is provided with a synchronizer, and gear shifting can be realized through movement, and fig. 1 shows a two-gear AMT gearbox. The synchronizer moves right, power is transmitted to the wheel end from the first gear, the synchronizer moves left, and power is transmitted to the wheel end from the second gear. When the clutch is opened and the TM motor is independently driven, pure electric driving can be realized, when the pure electric 1 gear is shifted to 2 gears, firstly, the TM removes torque, the synchronizer moves back to 1 gear, then the motor outputs negative torque for speed regulation, when the motor speed reaches 2 gears (delta is a calibration value in a positive delta speed interval of 2 gears, for example, 20 rpm), the synchronizer is moved to 2 gears, and finally, the motor is twisted up, and the pure electric downshift and the parallel gear shifting process are similar.
The specific control mode is as follows:
gear 1 of the pure electric motor is up to gear 2:
tm removes torque to around zero torque.
2. The synchronizer is shifted back to 1 st gear.
3. The motor produces negative torque for speed regulation.
4. The motor is turned to speed 2 (delta is a calibrated value, e.g., 20rpm, in speed 2 plus or minus delta speed interval).
5. And moving the synchronizer to 2 steps.
6. The motor is torque up to the drive demand torque.
Parallel 1 st gear up 2 nd gear:
tm removes torque to around zero torque. At the same time, the engine ISG end torque is removed to near zero torque, and the clutch is opened.
2. When the torque on the input shaft reaches near zero, the clutch is opened and the synchronizer is disengaged from gear 1.
3. The motor produces negative torque for speed regulation.
4. The motor is turned to speed 2 (delta is a calibrated value, e.g., 20rpm, in speed 2 plus or minus delta speed interval).
5. And moving the synchronizer to 2 steps.
6. The motor is torque up to the motor demand torque. At the same time, the clutch is closed and the engine ISG end rises torque demand torque.
The invention aims to design a single clutch and double motor multi-gear hybrid power driving system. The hybrid system of the invention can realize the functions of pure electric drive, serial drive, parallel drive, speed regulation, gear shift and the like by only using one clutch. Compared with an EDU GEN1 system, the invention cancels the clutch at the end of the driving TM motor, realizes the accurate speed regulation and gear shifting of the TM motor by control, not only realizes various mode functions of the hybrid system, but also reduces the cost of the power system. Compared with a public P2 system, the invention can realize series connection high-efficiency charging and driving, has better drivability and economy at low speed and low electric quantity, can also utilize a single motor to start the engine, and avoids the drivability problem of the P2 system during the skid and ground start. Compared with a relatively Addi P3 system, the motor is arranged at the front end of the gearbox, the gearbox can be used for realizing gear shifting, and the pure electric vehicle has better economical efficiency and dynamic property.
In summary, the invention can realize the hybrid functions of pure electric, series connection, engine start-stop, parallel connection, gear shifting and the like, and simultaneously compared with an EDU GEN1 system, the clutch at the TM motor end is reduced, the system cost is reduced, and the gear shifting time is increased.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A single clutch, dual motor, multi-speed hybrid drive system, comprising: the device comprises an engine (1), a first motor (2), a clutch (3), a second motor (5) and a transmission assembly;
the transmission assembly includes: an input shaft (7), an output shaft (8) and a speed change gear pair;
the engine (1) and the first motor (2) are connected to the driving disc of the clutch (3), the driven disc of the clutch (3) is connected to the first end of the input shaft (7), and the second motor (5) is connected to the second end of the input shaft (7);
a plurality of pairs of speed change gear pairs are arranged between the input shaft (7) and the output shaft (8).
2. The single clutch, double motor, multiple speed hybrid drive system according to claim 1, characterized in that the output shaft of the second motor (5) is directly connected to the second end of the input shaft (7).
3. The single clutch, dual motor, multi-speed hybrid drive system of claim 1, wherein the transmission assembly further comprises: a synchronizer (4);
the speed change gear pair includes: a first gear (11), a second gear (12), a third gear (13) and a fourth gear (14);
the first gear (11) and the second gear (12) are sleeved on the input shaft (7); the synchronizer (4) is arranged on the input shaft (7) and is used for being connected with the first gear (11) or the second gear (12);
the third gear (13) and the fourth gear (14) are fixedly connected to the output shaft (8), the third gear (13) is meshed with the first gear (11), and the fourth gear (14) is meshed with the second gear (12).
4. The single clutch, dual motor, multi-speed hybrid drive system of claim 1, further comprising: a differential (6);
the output shaft (8) is fixedly connected with a fifth gear (15), and the fifth gear (15) is meshed with an input gear of the differential mechanism (6).
5. A vehicle comprising a single clutch, dual motor, multi-speed hybrid drive system as defined in any one of claims 1-4.
6. A single clutch, double motor and multiple gear hybrid power driving method, characterized in that the single clutch, double motor and multiple gear hybrid power system according to any one of claims 1-4 is used, said method at least comprising:
a pure electric mode, wherein the clutch (3) is controlled to be opened, and torque is distributed to the second motor (5) to output power according to the requirement of a driver;
and in a parallel driving mode, controlling the clutch (3) to be closed, and distributing torque to the engine (1), the first motor (2) and the second motor (5) to output power according to a control strategy.
7. The single clutch, two motor, multiple speed hybrid drive method according to claim 6, wherein in the electric-only drive mode, the upshift step includes:
s1, removing the torque of the second motor (5) to zero torque;
s2, controlling the synchronizer (4) to move down;
s3, controlling the second motor (5) to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor (5) to a high-grade rotating speed;
s5, controlling the synchronizer (4) to enter a high gear;
s6, the second motor (5) is twisted up to the driving requirement torque.
8. The single clutch double motor multiple speed hybrid driving method according to claim 7, wherein in the step S4, the rotational speed of the second motor (5) is adjusted to a plus and minus delta rotational speed interval of the high speed rotational speed, wherein delta is a calibrated value.
9. The single clutch, two motor, multiple speed hybrid drive method according to claim 6, wherein in the parallel drive mode, the upshift step includes:
s1, removing the torque of the second motor (5) to zero torque, and simultaneously removing the torque of the engine (1) and the torque of the first motor (2) to zero torque;
s2, opening the clutch (3) and controlling the synchronizer (4) to move down;
s3, controlling the second motor (5) to output negative torque for speed regulation;
s4, adjusting the rotating speed of the second motor (5) to a high-grade rotating speed;
s5, controlling the synchronizer (4) to enter a high gear;
s6, the second motor (5) is twisted up to the driving required torque, the clutch (3) is closed, and the engine (1) and the first motor (2) are twisted up to the driving required torque.
10. The single clutch double motor multiple speed hybrid driving method according to claim 9, wherein in the step S4, the rotational speed of the second motor (5) is adjusted to a plus and minus delta rotational speed interval of the high speed rotational speed, wherein delta is a calibrated value.
CN202210311052.5A 2022-03-28 2022-03-28 Single-clutch double-motor multi-gear hybrid power driving system, method and vehicle Pending CN116852972A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117432756A (en) * 2023-12-15 2024-01-23 中国第一汽车股份有限公司 Transmission device of hybrid system, power system and hybrid vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117432756A (en) * 2023-12-15 2024-01-23 中国第一汽车股份有限公司 Transmission device of hybrid system, power system and hybrid vehicle
CN117432756B (en) * 2023-12-15 2024-03-15 中国第一汽车股份有限公司 Transmission device of hybrid system, power system and hybrid vehicle

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