CN114771235A - Hybrid power driving device for hybrid electric vehicle and control method thereof - Google Patents

Hybrid power driving device for hybrid electric vehicle and control method thereof Download PDF

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Publication number
CN114771235A
CN114771235A CN202210580095.3A CN202210580095A CN114771235A CN 114771235 A CN114771235 A CN 114771235A CN 202210580095 A CN202210580095 A CN 202210580095A CN 114771235 A CN114771235 A CN 114771235A
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China
Prior art keywords
gear
power
engine
working mode
clutch
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CN202210580095.3A
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Chinese (zh)
Inventor
王建
朱孝凯
尹必峰
陈金柯
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Jiangsu University
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Jiangsu University
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Priority to CN202210580095.3A priority Critical patent/CN114771235A/en
Publication of CN114771235A publication Critical patent/CN114771235A/en
Priority to PCT/CN2023/090240 priority patent/WO2023226660A1/en
Pending legal-status Critical Current

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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
    • B60K6/50—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
    • 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
    • B60K6/42—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
    • 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
    • B60W10/11—Stepped 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • 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
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0275—Clutch 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • 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

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

Abstract

The invention discloses a hybrid power driving device for a hybrid electric vehicle and a control method thereof, wherein the hybrid power driving device comprises an engine, an auxiliary motor assembly, a main driving motor assembly, an output shaft and a differential mechanism assembly, wherein the auxiliary motor assembly is connected with the engine, and the engine and the main driving motor assembly are connected with the differential mechanism assembly through the output shaft; has the advantages that: according to the invention, switching among multiple output working modes is realized through the cooperation of the engine, the auxiliary motor assembly and the main driving motor assembly, and the output working modes have two gear changes through the gear shifting execution device according to the working state information, the driver intention information and the automobile running condition information of each assembly of the hybrid power driving device, so that the adaptability of the whole power driving device to different working conditions is improved, the fuel consumption of the whole automobile is reduced, the driving smoothness and the driving comfort are improved, and the hidden danger of power interruption of the power driving device in the gear changing process is avoided.

Description

Hybrid power driving device for hybrid electric vehicle and control method thereof
Technical Field
The invention relates to a power driving device and a control method thereof, in particular provides a hybrid power driving device for a hybrid electric vehicle and a control method thereof, and belongs to the technical field of transmission of hybrid electric vehicles.
Background
The hybrid electric vehicle refers to an electric vehicle with two or more power sources, and generally refers to a vehicle which is driven by an engine and a motor in a hybrid way and is widely applied at present. Due to the excellent energy-saving and emission-reducing effects, the automobile fuel tank becomes a research hotspot in the current automobile field.
The hybrid powertrain system is used as a key technology in a hybrid electric vehicle and plays a decisive role in improving the comprehensive performance of the vehicle. Existing hybrid powertrain systems typically employ a parallel-axis architecture. Parallel-axis architectures are more applicable to two types: the improved structure based on the traditional gearbox and the novel hybrid power structure adopting the synchronizer structure.
The improved structure based on the traditional gearbox in the prior art has the defects of single working mode, complex structure, high manufacturing cost and poor fuel economy. The novel hybrid power configuration adopting the synchronizer structure generally adopts a single-clutch + multi-gear configuration and a multi-clutch + multi-gear configuration, and the single-clutch + multi-gear configuration adopts the synchronizer structure, can generate larger impact in the gear shifting process, increases the gear shifting time, influences the gear shifting smoothness, and seriously influences the driving comfort due to the power interruption condition in the working process. Multiple gears also result in an increased number of synchronizers, which can be costly to manufacture. The multi-clutch and multi-gear configuration has the defects of a single-clutch and multi-gear configuration, the control difficulty of the multi-gear is improved along with the increase of the number of clutches, and the manufacturing cost is increased.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects in the prior art, the invention provides a hybrid power driving device for a hybrid power automobile and a control method thereof.
The technical scheme is as follows: a hybrid power driving device for a hybrid electric vehicle comprises an engine, an auxiliary motor assembly, a main driving motor assembly, an output shaft and a differential mechanism assembly, wherein the auxiliary motor assembly is connected with the engine; the method is characterized in that: the auxiliary motor assembly comprises an auxiliary motor, an auxiliary motor gear, a brake A and an auxiliary motor linkage device, the auxiliary motor linkage device is sleeved on an engine output shaft of the engine, the brake A can lock the auxiliary motor linkage device, the auxiliary motor linkage device is connected with an output shaft of the auxiliary motor through the auxiliary motor gear, and a gear shifting execution device is arranged between the engine output shaft and the output shaft.
According to the invention, switching among multiple output working modes is realized through the cooperation of the engine, the auxiliary motor assembly and the main driving motor assembly, and meanwhile, the gear shifting execution device can also enable the output working modes to have two gear changes, so that the adaptability of the whole power driving device to different working conditions is increased, the fuel consumption of the whole vehicle is reduced, the hidden danger of power interruption of the power driving device in the gear changing process is avoided, and the driving smoothness and the driving comfort are improved.
Preferably, the main drive motor assembly comprises a main drive motor, a connecting gear and a brake B, an output shaft of the main drive motor is connected with the output shaft through the connecting gear, and the brake B can lock the output shaft of the main drive motor.
Preferably, the gear shifting executing device comprises a first gear control device and a second gear control device; the first gear control device comprises a first clutch and a first gear, the output shaft of the engine is connected with the first gear through the first clutch, and the first gear is connected with the output shaft; the second gear control device comprises a second clutch and a second gear, the output shaft of the engine is connected with the second gear, and the second gear is connected with the output shaft through the second clutch.
Preferably, the differential assembly comprises a differential and a main reducer gear, and the differential is connected with the output shaft through the main reducer gear.
A control method of a hybrid drive apparatus for a hybrid vehicle, characterized by comprising the steps of:
the method comprises the steps of firstly, collecting information,
the method comprises the steps that a data interaction management layer collects working state information, driver intention information and automobile running condition information of all assemblies of a current hybrid power driving device, wherein the driver intention information comprises driver request driving torque TreqeAnd driver requested braking torque TbrThe vehicle running condition information comprises the state of charge (SOC) of the power supply and the vehicle running speed Vcurrrnt；
Step two, analyzing the information data,
the data interaction analysis layer identifies the working state information, the driver intention information and the automobile running condition information of each assembly of the hybrid power driving device and determines automobile state information, and the data interaction analysis layer sends the analyzed automobile state information to the automobile control strategy layer;
step three, executing a power output working mode,
the automobile control strategy layer analyzes and calculates according to automobile state information, determines a power output working mode of the hybrid power driving device, and issues a working mode execution command to the execution mechanism control layer, the execution mechanism control layer controls each assembly of the hybrid power driving device to complete a corresponding action command according to the working mode execution command, and feeds back information of whether the action command is completed or not to the execution mechanism control layer, so that the hybrid power driving device realizes power output of the corresponding working mode, and the action command comprises an engine control command, an auxiliary motor assembly control command, a main driving motor assembly control command, a power supply control command, a first clutch control command and a second clutch control command;
step four, the action command executes the verification,
and the executing mechanism control layer judges whether each assembly of the hybrid power driving device continuously executes the action command according to the information of whether the action command is finished or not, and if the action command is judged to be not finished, the corresponding assembly of the hybrid power driving device continuously executes the corresponding action command until the action command is finished.
Preferably, in the third step, the power output operation mode of the hybrid drive unit includes: the system comprises a pure electric working mode, a range extending working mode, an engine direct-drive working mode, a hybrid power drive working mode and an energy braking recovery working mode; the hybrid power driving mode comprises a combined driving working mode and a driving power generation working mode.
Preferably, the control method of the power output working mode of the hybrid power driving device comprises the following steps:
in the pure electric working mode, the power supply is switched on,
the brake B, the first clutch and the second clutch are disconnected, the brake A is connected, the engine and the auxiliary motor assembly are in a non-working state, the power supply supplies power to the main driving motor assembly, and the output power of the main driving motor assembly is transmitted to the differential mechanism to be output through the output shaft of the main driving motor, the connecting gear, the output shaft and the main reducer gear;
the range-extended working mode is that the distance between the two working modes is increased,
the brake A, the brake B, the first clutch and the second clutch are disconnected, a power supply supplies power to the auxiliary motor assembly and the main driving motor assembly, the auxiliary motor assembly drives the engine to turn into a working mode, the engine outputs power to drive the auxiliary motor assembly to generate power through the auxiliary motor linkage device and the auxiliary motor gear, electric power generated by the auxiliary motor assembly charges the power supply or directly drives the main driving motor assembly, and the main driving motor assembly outputs power which is transmitted to a differential mechanism to be output through an output shaft, a connecting gear, an output shaft and a main reducer gear of the main driving motor;
the engine direct-drive working mode comprises an engine direct-drive first-gear working mode and an engine direct-drive second-gear working mode;
the engine directly drives the first gear working mode,
the brake A and the second clutch are disconnected, the brake B and the first clutch are connected, the main driving motor assembly is in an out-of-operation state, the power supply supplies power to the auxiliary motor assembly, the auxiliary motor assembly drives the engine to turn into a working mode, and power output by the engine is transmitted to the differential mechanism through the engine output shaft, the first clutch, the first gear, the output shaft and the main reducer gear to be output;
the engine directly drives a two-gear working mode,
the brake A and the first clutch are disconnected, the brake B and the second clutch are connected, the main driving motor assembly is in an out-of-operation state, the power supply supplies power to the auxiliary motor assembly, the auxiliary motor assembly drives the engine to rotate to a working mode, and power output by the engine is transmitted to the differential mechanism through the engine output shaft, the second clutch, the second gear, the output shaft and the main reducer gear to be output;
the hybrid power driving working mode comprises a combined driving working mode and a driving power generation working mode;
a combined driving working mode which is divided into a combined driving first-gear working mode and a combined driving second-gear working mode;
the first-gear working mode is driven in a combined mode,
the brake A, the brake B and the second clutch are disconnected, the first clutch is connected, the power supply supplies power to the auxiliary motor assembly and the main driving motor assembly, the auxiliary motor assembly drives the engine to be switched into a working mode, and power output by the engine is transmitted to the output shaft through the output shaft of the engine, the first clutch and the first gear; the output power of the main drive motor assembly is transmitted to an output shaft through an output shaft of the main drive motor and a connecting gear; the two power are converged at the output shaft and then transmitted to the differential through the main reducer gear to be output;
the two-gear working mode is driven in a combined manner,
the brake A, the brake B and the first clutch are disconnected, the second clutch is connected, the power supply supplies power to the auxiliary motor assembly and the main driving motor assembly, the auxiliary motor assembly drives the engine to be switched into a working mode, and power output by the engine is transmitted to the output shaft through the output shaft of the engine, the second clutch and the second gear; the output power of the main drive motor assembly is transmitted to an output shaft through an output shaft of the main drive motor and a connecting gear; the two power are converged at the output shaft and then transmitted to the differential through the main reducer gear to be output;
the system comprises a driving power generation working mode and a driving power generation working mode, wherein the driving power generation working mode comprises a driving power generation first-gear working mode and a driving power generation second-gear working mode;
the running vehicle generates electricity in a first gear working mode,
the brake A, the brake B and the second clutch are disconnected, the first clutch is connected, the power supply supplies power to the auxiliary motor assembly, the auxiliary motor assembly drives the engine to be switched into a working mode, and the power output by the engine is transmitted to the output shaft through the output shaft of the engine, the first clutch and the first gear to be split: one path of power is transmitted to the differential mechanism through a main speed reducer gear to be output; the other path of power drives a main driving motor assembly to generate power through a connecting gear and an output shaft of a main driving motor, and the power generated by the main driving motor assembly charges a power supply;
the running power generation has a second-gear working mode,
the brake A, the brake B and the first clutch are disconnected, the second clutch is connected, the power supply supplies power to the auxiliary motor assembly, the auxiliary motor assembly drives the engine to be switched into a working mode, and the power output by the engine is transmitted to the output shaft through the engine output shaft, the second clutch and the second gear to be shunted: one path of power is transmitted to the differential mechanism through a main speed reducer gear to be output; the other path of power drives a main driving motor assembly to generate power through a connecting gear and an output shaft of the main driving motor, and the power generated by the main driving motor assembly charges a power supply;
the energy braking and recovering working mode is that,
the brake B, the first clutch and the second clutch are disconnected, the brake A is connected, the engine and the auxiliary motor assembly are in a non-working state, in the braking process, the power recovered by the differential mechanism in the braking process drives the main driving motor assembly to generate power through the main speed reducer gear, the output shaft, the connecting gear and the output shaft of the main driving motor, and the power generated by the main driving motor assembly charges the power supply.
Preferably, the determining step of determining the power output operation mode of the hybrid drive unit in the third step is as follows:
s1: in the starting phase of the automobile,
judging the state of charge (SOC) of the power supply according to the automobile state information transmitted by the data interaction analysis layer,
if the state of charge (SOC) of the power supply is larger than the range-extended working mode starting threshold SOCswitchThe power output working mode of the hybrid power driving device is a pure electric working mode;
if the SOC of the power supply is less than the SOC of the range-extended working mode, starting the threshold SOCswitchAnd the state of charge (SOC) of the power supply is less than the starting threshold SOC of the power supplyLThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
s2: in the driving stage of the automobile,
during the driving stage of the automobile, the driver request driving torque T is judgedreqeAnd driver requested braking torque Tbr，
If the driver requests the driving torque Treqe< 0, driver requested braking torque TbrWhen the power output working mode of the hybrid power driving device is larger than 0, the power output working mode of the hybrid power driving device is a range-extending working mode;
if the driver requests the driving torque TreqeIf more than 0, the running speed V of the automobile is judgedcurrrntDriver requested drive torque TreqePriority is given to the running speed V of the automobilecurrrntThe determination is made as to whether the user is present,
when the vehicle is running at a speed Vcurrrnt< Engine drive vehicle speed VswitchWhen the hybrid power driving device is in the power output working mode, the hybrid power driving device is in the range-extending working mode;
when the vehicle is running at a speed VcurrrntVehicle speed V driven by engineswitchWhen the driver request drive torque T is continuously determinedreqe，
If TreqeMaximum torque threshold T for efficient engine operationmaxThe power output working mode of the hybrid power driving device is a combined driving working mode, and a combined driving first-gear working mode or a combined driving second-gear working mode is judged according to working requirements;
minimum torque threshold T for efficient engine operationmin＜Treqe< maximum Torque threshold T for efficient Engine operationmaxThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
if T isreqe< threshold value T for minimum torque for efficient operation of engineminThe power output working mode of the hybrid power driving device is a driving power generation mode, and a driving power generation first-gear working mode or a driving power generation second-gear working mode is judged according to working requirements;
s3: in the braking stage of the automobile,
parsing from data interactionLayer-transmitted vehicle state information, determining driver requested braking torque Tbr，
If the driver requests the braking torque TbrAnd if the power output working mode of the hybrid power driving device is more than 0, the power output working mode of the hybrid power driving device is an energy braking and recovering working mode.
Preferably, the control method for switching between the first gear mode and the second gear mode in the power output operation mode of the hybrid drive unit in steps S1 and S2 is:
step A, analyzing the information data,
the data analysis system analyzes a driving torque signal requested by a driver and an automobile running speed signal according to automobile state information transmitted by the data interaction management layer and transmits the driving torque signal and the automobile running speed signal to the working gear judgment strategy layer, and the working gear judgment strategy layer analyzes the signals to obtain a target gear signal;
and step B, calculating the target requirement,
the gear shifting work control strategy layer analyzes the target gear signal and the working state information of each assembly of the hybrid power driving device to obtain an engine target requirement, a main driving motor target requirement and a clutch target requirement and transmits target requirement information to the actuating mechanism control layer;
step C, executing the action command,
the executing mechanism control layer sends corresponding action executing commands to the engine, the main driving motor, the first clutch and the second clutch according to the target demand information,
the new gear clutch starts to move to a joint, the original gear clutch starts to separate, the main driving motor provides power for the movement of the automobile, if the original gear clutch is not completely separated, the separation is continued until the original gear clutch is completely separated,
after the original gear clutch is completely separated, the new gear clutch begins to enter a friction sliding stage,
and adjusting the output rotating speed of the engine, adjusting the output torque of the engine when the difference between the output rotating speed of the engine and the rotating speed of the driven assembly of the new gear clutch is within a set threshold value, completing the engagement of the new gear clutch, gradually reducing the compensation torque provided by the main driving motor for the automobile until the compensation torque disappears, and starting the new gear.
Preferably, in step C, when the hybrid drive device is switched between the first gear mode and the second gear mode in the power output operation mode, the operation process of the engine is as follows:
step C1, determining the target throttle opening of the engine through an engine table look-up model according to the target requirement of the engine and the current rotating speed of the engine;
step C2, adjusting the current throttle opening of the engine by the engine controller so as to adjust the output torque of the engine;
and step C3, judging the output torque of the clutch and the driving torque requested by the driver, if the output torque of the clutch is smaller than the driving torque requested by the driver, providing the power by the main driving motor to compensate the residual torque required by the driving of the automobile until the output torque of the clutch reaches the driving torque requested by the driver, stopping providing the power by the main driving motor, and starting working at a new gear.
Has the beneficial effects that: according to the invention, the switching among multiple output working modes is realized through the cooperation among the engine, the auxiliary motor assembly and the main driving motor assembly, and meanwhile, the output working modes have the changes of two gears through the gear shifting executing device according to the working state information, the driver intention information and the automobile running condition information of each assembly of the hybrid power driving device, so that the adaptability of the whole power driving device to different working conditions is improved, the fuel consumption of the whole automobile is reduced, and the driving smoothness and the driving comfort are improved; the opening of an engine throttle valve is adjusted through an engine controller in the gear switching process, the output torque of the engine is further adjusted, the output torque of a clutch and the driving torque requested by a driver are judged, a main driving motor is adjusted to provide power compensation, the hidden danger that power is interrupted in the gear switching process of a power driving device is avoided, and the gear shifting quality and the driving experience of the driver are further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a hybrid drive apparatus according to the present invention.
Fig. 2 is a schematic diagram of a control method of the hybrid drive apparatus of the present invention.
FIG. 3 is a diagram of a power transmission route in an electric-only operating mode of the present invention.
FIG. 4 is a power transmission route diagram for the extended range mode of operation of the present invention.
FIG. 5 is a power transmission route diagram of a direct-drive first-gear operating mode of the engine of the present invention.
Fig. 6 is a power transmission route diagram of the engine in the direct-drive two-gear working mode.
Fig. 7 is a power transmission route diagram of the combined driving first gear working mode of the invention.
Fig. 8 is a power transmission route diagram of the combined driving two-gear operating mode according to the present invention.
Fig. 9 is a power transmission route diagram of the first gear operation mode of the driving power generation of the present invention.
Fig. 10 is a power transmission route diagram in a two-gear power generation mode of the invention.
Fig. 11 is a diagram of the power transmission route for the energy brake recovery operation mode of the present invention.
Fig. 12 is a logic diagram for determining the power output operation mode of the hybrid drive apparatus of the present invention.
Fig. 13 is a schematic diagram of a control method for switching between the first gear mode and the second gear mode of the power output operation mode of the hybrid drive unit according to the present invention.
Fig. 14 is a schematic diagram of the operation of the engine when the hybrid drive unit switches between the first gear mode and the second gear mode in the power output operation mode of the present invention.
Fig. 15 is a flowchart of the control strategy when the hybrid power driving apparatus switches between the first gear mode and the second gear mode of the power output operation mode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, a hybrid power driving device for a hybrid electric vehicle includes an engine 1, an auxiliary motor assembly 2, a main driving motor assembly 3, an output shaft 4, and a differential assembly 5, wherein the auxiliary motor assembly 2 is connected with the engine 1, and the engine 1 and the main driving motor assembly 3 are connected with the differential assembly 5 through the output shaft 4; the method is characterized in that: the auxiliary motor assembly 2 comprises an auxiliary motor 21, an auxiliary motor gear 22, a brake A23 and an auxiliary motor linkage device 24, wherein the auxiliary motor linkage device 24 is sleeved on an engine output shaft 11 of the engine 1, the brake A23 can lock the auxiliary motor linkage device 24, the auxiliary motor linkage device 24 is connected with an output shaft of the auxiliary motor 21 through the auxiliary motor gear 22, and a gear shifting execution device 6 is arranged between the engine output shaft 11 and an output shaft 4.
According to the invention, switching among multiple output working modes is realized through the cooperation of the engine 1, the auxiliary motor assembly 2 and the main driving motor assembly 3, and meanwhile, the gear shifting execution device 6 can also enable the output working modes to have two gear changes, so that the adaptability of the whole power driving device to different working conditions is increased, the fuel consumption of the whole vehicle is reduced, the hidden danger of power interruption of the power driving device in the gear changing process is avoided, and the driving smoothness and the driving comfort are improved.
The main drive motor assembly 3 comprises a main drive motor 31, a connecting gear 32 and a brake B33, wherein an output shaft of the main drive motor 31 is connected with an output shaft 4 through the connecting gear 32, and the brake B33 can lock the output shaft of the main drive motor 31.
The gear shifting executing device 6 comprises a first gear control device 61 and a second gear control device 62; the first gear control device 61 includes a first clutch 611 and a first gear 612, the engine output shaft 11 is connected with the first gear 612 through the first clutch 611, and the first gear 612 is connected with the output shaft 4; the second gear control device 62 includes a second clutch 621 and a second gear 622, the engine output shaft 11 is connected to the second gear 622, and the second gear 622 is connected to the output shaft 4 through the second clutch 621.
The differential assembly 5 comprises a differential 51 and a final drive gear 52, and the differential 51 is connected with the output shaft 4 through the final drive gear 52.
As shown in fig. 2, a control method of a hybrid drive apparatus for a hybrid vehicle, characterized by comprising the steps of:
step one, information acquisition.
Data interaction management layer collects current blendsThe method comprises the steps of working state information, driver intention information and automobile running condition information of each assembly of the power driving device, wherein the driver intention information comprises driver request driving torque TreqeAnd driver requested braking torque TbrThe vehicle running condition information comprises the state of charge (SOC) of the power supply and the vehicle running speed Vcurrrnt。
And step two, analyzing the information data.
The data interaction analysis layer identifies the working state information, the driver intention information and the automobile running condition information of each assembly of the hybrid power driving device and determines the automobile state information, and the data interaction analysis layer sends the analyzed automobile state information to the automobile control strategy layer.
And step three, executing a power output working mode.
The automobile control strategy layer analyzes and calculates according to automobile state information, determines a power output working mode of the hybrid power driving device, and issues a working mode execution command to the execution mechanism control layer, the execution mechanism control layer controls each assembly of the hybrid power driving device to complete a corresponding action command according to the working mode execution command, and feeds back information of whether the action command is completed to the execution mechanism control layer, so that the hybrid power driving device realizes power output of the corresponding working mode, and the action command comprises an engine 1 control command, an auxiliary motor assembly 2 control command, a main driving motor assembly 3 control command, a power supply control command, a first clutch 611 control command and a second clutch 621 control command.
In the third step, the power output working mode of the hybrid power driving device comprises the following steps: the system comprises a pure electric working mode, a range extending working mode, an engine direct-drive working mode, a hybrid power drive working mode and an energy braking recovery working mode; the hybrid power driving mode comprises a combined driving working mode and a driving power generation working mode.
The control method of the power output working mode of the hybrid power driving device comprises the following steps:
as shown in fig. 3, the electric-only operating mode,
the brake B33, the first clutch 611 and the second clutch 621 are disconnected, the brake A23 is connected, the engine 1 and the auxiliary motor assembly 2 are in a non-operating state, the power supply supplies power to the main driving motor assembly 3, and the output power of the main driving motor assembly 3 is transmitted to the differential 51 for output through the output shaft of the main driving motor 31, the connecting gear 32, the output shaft 4 and the main reducer gear 52.
As shown in fig. 4, the extended range mode of operation,
the brake A23, the brake B33, the first clutch 611 and the second clutch 621 are disconnected, a power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to be switched into a working mode, the engine 1 outputs power to drive the auxiliary motor assembly 2 to generate power through the auxiliary motor linkage device 24 and the auxiliary motor gear 22, electric power generated by the auxiliary motor assembly 2 charges the power supply or directly drives the main driving motor assembly 3, and the main driving motor assembly 3 outputs power which is transmitted to the differential 51 through an output shaft of the main driving motor 31, the connecting gear 32, the output shaft 4 and the main reducer gear 52 to be output.
The engine direct-drive working mode comprises an engine direct-drive first-gear working mode and an engine direct-drive second-gear working mode.
As shown in fig. 5, the engine directly drives the first gear operating mode,
the brake A23 and the second clutch 621 are disconnected, the brake B33 and the first clutch 611 are connected, the main driving motor assembly 3 is in an inoperative state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate to a working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the first clutch 611, the first gear 612, the output shaft 4 and the main reducer gear 52 to be output.
As shown in fig. 6, the engine directly drives the two-gear operating mode,
the brake A23 and the first clutch 611 are disconnected, the brake B33 and the second clutch 621 are connected, the main driving motor assembly 3 is in an inoperative state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate to a working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the second clutch 621, the second gear 622, the output shaft 4 and the main reducer gear 52 to be output.
And the hybrid power driving working mode is divided into a combined driving working mode and a driving power generation working mode.
And the combined driving working mode is divided into a combined driving first-gear working mode and a combined driving second-gear working mode.
As shown in fig. 7, the first gear operating mode is jointly driven,
the brake A23, the brake B33 and the second clutch 621 are disconnected, the first clutch 611 is engaged, the power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to be in a working mode, and the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the first clutch 611 and the first gear 612; the output power of the main driving motor assembly 3 is transmitted to the output shaft 4 through the output shaft of the main driving motor 31 and the connecting gear 32; the two powers are merged at the output shaft 11 and then transmitted to the differential 51 through the final drive gear 52 for output.
As shown in fig. 8, the two-gear operation mode is driven jointly,
the brake A23, the brake B33 and the first clutch 611 are disconnected, the second clutch 621 is connected, the power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to rotate to a working mode, and the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the second clutch 621 and the second gear 622; the output power of the main driving motor assembly 3 is transmitted to the output shaft 4 through the output shaft of the main driving motor 31 and the connecting gear 32; the two power are merged at the output shaft 11 and then transmitted to the differential 51 through the final drive gear 52 to be output.
And the driving power generation working mode comprises a driving power generation first-gear working mode and a driving power generation second-gear working mode.
As shown in fig. 9, the first gear operating mode of the driving power generation,
the brake A23, the brake B33 and the second clutch 621 are disconnected, the first clutch 611 is engaged, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate to the working mode, and the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the first clutch 611 and the first gear 612 to be split: one path of power is transmitted to the differential 51 through the main reducer gear 52 and is output; the other path of power drives the main driving motor assembly 3 to generate power through the connecting gear 32 and an output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges the power supply.
As shown in fig. 10, the two-gear operation mode of driving power generation,
the brake A23, the brake B33 and the first clutch 611 are disconnected, the second clutch 621 is connected, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate to the working mode, the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the second clutch 621 and the second gear 622 to be split: one path of power is transmitted to the differential 51 through the main reducer gear 52 and is output; the other path of power drives the main driving motor assembly 3 to generate power through the connecting gear 32 and an output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges the power supply.
As shown in fig. 11, the energy brake recovery mode of operation,
the brake B33, the first clutch 611 and the second clutch 621 are disconnected, the brake A23 is connected, the engine 1 and the auxiliary motor assembly 2 are in a non-working state, in the braking process, the power recovered by the differential 51 in the braking process drives the main driving motor assembly 3 to generate power through the main speed reducer gear 52, the output shaft 4, the connecting gear 32 and the output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges the power supply.
As shown in fig. 12, the determination steps for determining the power output operation mode of the hybrid drive unit in the third step are as follows:
s1: in the starting phase of the automobile,
judging the state of charge (SOC) of the power supply according to the automobile state information transmitted by the data interaction analysis layer,
if the state of charge (SOC) of the power supply is larger than the range-extended working mode starting threshold SOCswitchThe power output working mode of the hybrid power driving device is a pure electric working mode, a brake B33, a first clutch 611 and a second clutch 621 are disconnected, a brake A23 is connected, the engine 1 and the auxiliary motor assembly 2 are in an inoperative state, a power supply supplies power to the main driving motor assembly 3, and the output power of the main driving motor assembly 3 is transmitted to the differential 51 for output through an output shaft of the main driving motor 31, the connecting gear 32, the output shaft 4 and the main reducer gear 52;
if the SOC of the power supply is less than the SOC of the range-extended working mode, starting the threshold SOCswitchAnd the state of charge (SOC) of the power supply is less than the starting threshold SOC of the power supplyLThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
when the engine is in a direct-drive first-gear working mode, the brake A23 and the second clutch 621 are disconnected, the brake B33 and the first clutch 611 are connected, the main driving motor assembly 3 is in an inoperative state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to be switched into a working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the first clutch 611, the first gear 612, the output shaft 4 and the main reducer gear 52 and is output.
When the engine is in the direct-drive two-gear working mode, the brake a23 and the first clutch 611 are disconnected, the brake B33 and the second clutch 621 are connected, the main driving motor assembly 3 is in a non-working state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to be switched into the working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the second clutch 621, the second gear 622, the output shaft 4 and the main reducer gear 52 to be output.
S2: in the driving stage of the automobile,
during the driving stage of the automobile, the driver request driving torque T is judgedreqeAnd driver requested braking torque Tbr，
If the driver requests the driving torque Treqe< 0, driver requested braking torque TbrWhen the power output working mode of the hybrid power driving device is a range-extending working mode, a brake A23, a brake B33, a first clutch 611 and a second clutch 621 are disconnected, a power supply supplies power to an auxiliary motor assembly 2 and a main driving motor assembly 3, the auxiliary motor assembly 2 drives an engine 1 to turn into the working mode, the output power of the engine 1 drives the auxiliary motor assembly 2 to generate power through an auxiliary motor linkage device 24 and an auxiliary motor gear 22, the electric power generated by the auxiliary motor assembly 2 charges the power supply or directly drives the main driving motor assembly 3, and the output power of the main driving motor assembly 3 is transmitted to a differential 51 to be output through an output shaft of a main driving motor 31, a connecting gear 32, an output shaft 4 and a main reducer gear 52;
if the driver requests the driving torque TreqeIf more than 0, the running speed V of the automobile is judgedcurrrntDriver requested drive torque TreqeIs prioritized over the running speed V of the automobilecurrrntThe determination is made as to whether or not the target,
when the vehicle is running at a speed Vcurrrnt< vehicle speed V driven by engineswitchWhen the hybrid power driving device is in a power output working mode, the brake A23, the brake B33, the first clutch 611 and the second clutch 621 are disconnected, a power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to turn into the working mode, the output power of the engine 1 drives the auxiliary motor assembly 2 to generate power through the auxiliary motor linkage device 24 and the auxiliary motor gear 22, the electric power generated by the auxiliary motor assembly 2 charges the power supply or directly drives the main driving motor assembly 3, and the output power of the main driving motor assembly 3 is transmitted to the differential 51 to be output through the output shaft of the main driving motor 31, the connecting gear 32, the output shaft 4 and the main reducer gear 52;
when the vehicle is running at a speed VcurrrntVehicle speed V driven by engineswitchWhen the driver request drive torque T is continuously determinedreqe，
If T isreqeMaximum torque threshold T for efficient engine operationmaxThe power output working mode of the hybrid power driving device is a combined driving working mode, and a combined driving first-gear working mode or a combined driving second-gear working mode is determined according to working requirements;
when the first-gear working mode is the combined driving working mode, the brake A23, the brake B33 and the second clutch 621 are disconnected, the first clutch 611 is engaged, the power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to be in the working mode, and the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the first clutch 611 and the first gear 612; the output power of the main driving motor assembly 3 is transmitted to the output shaft 4 through the output shaft of the main driving motor 31 and the connecting gear 32; the two power are converged at the output shaft 11 and then transmitted to the differential 51 through the main reducer gear 52 for output;
when the two-gear working mode is jointly driven, the brake A23, the brake B33 and the first clutch 611 are disconnected, the second clutch 621 is connected, the power supply supplies power to the auxiliary motor assembly 2 and the main driving motor assembly 3, the auxiliary motor assembly 2 drives the engine 1 to rotate to the working mode, and the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the second clutch 621 and the second gear 622; the output power of the main driving motor assembly 3 is transmitted to the output shaft 4 through the output shaft of the main driving motor 31 and the connecting gear 32; the two power are converged at the output shaft 11 and then transmitted to the differential 51 through the main reducer gear 52 for output;
minimum torque threshold T for efficient engine operationmin＜Treqe< maximum Torque threshold T for efficient Engine operationmaxThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
when the engine is in a direct-drive first-gear working mode, the brake A23 and the second clutch 621 are disconnected, the brake B33 and the first clutch 611 are connected, the main driving motor assembly 3 is in an inoperative state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to be switched into a working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the first clutch 611, the first gear 612, the output shaft 4 and the main reducer gear 52 and is output.
When the engine is in the direct-drive two-gear working mode, the brake a23 and the first clutch 611 are disconnected, the brake B33 and the second clutch 621 are connected, the main driving motor assembly 3 is in a non-working state, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to be switched into the working mode, and the power output by the engine 1 is transmitted to the differential 51 through the engine output shaft 11, the second clutch 621, the second gear 622, the output shaft 4 and the main reducer gear 52 to be output.
If Treqe< minimum torque threshold T for efficient engine operationminThe power output working mode of the hybrid power driving device is a driving power generation mode, and a driving power generation first-gear working mode or a driving power generation second-gear working mode is judged according to working requirements;
when the vehicle is in the first gear power generation operating mode, the brake a23, the brake B33 and the second clutch 621 are disconnected, the first clutch 611 is engaged, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate to the operating mode, the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the first clutch 611 and the first gear 612 to be split: one path of power is transmitted to the differential 51 through the main reducer gear 52 and is output; the other path of power drives the main driving motor assembly 3 to generate power through the connecting gear 32 and an output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges a power supply;
when the vehicle is in the first-gear power generation working mode, the brake a23, the brake B33 and the first clutch 611 are disconnected, the second clutch 621 is connected, the power supply supplies power to the auxiliary motor assembly 2, the auxiliary motor assembly 2 drives the engine 1 to rotate into the working mode, the power output by the engine 1 is transmitted to the output shaft 4 through the engine output shaft 11, the second clutch 621 and the second gear 622 to be split: one path of power is transmitted to a differential 51 through a main reducer gear 52 and is output; the other path of power drives the main driving motor assembly 3 to generate power through the connecting gear 32 and an output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges the power supply.
S3: in the braking stage of the automobile,
according to the automobile state information transmitted by the data interaction analysis layer, the braking torque T requested by the driver is judgedbr，
If the driver requests the braking torque TbrAnd when the power output working mode of the hybrid power driving device is an energy braking recovery working mode, the brake B33, the first clutch 611 and the second clutch 621 are disconnected, the brake A23 is connected, the engine 1 and the auxiliary motor assembly 2 are in a non-working state, in the braking process, the braking process power recovered by the differential 51 drives the main driving motor assembly 3 to generate power through the main reducer gear 52, the output shaft 4, the connecting gear 32 and the output shaft of the main driving motor 31, and the power generated by the main driving motor assembly 3 charges a power supply.
As shown in fig. 13 and 15, the control method for switching between the first gear mode and the second gear mode in the power output operation mode of the hybrid drive apparatus in steps S1 and S2 includes:
step A, analyzing the information data,
the data analysis system analyzes a driving torque signal requested by a driver and an automobile running speed signal according to automobile state information transmitted by the data interaction management layer and transmits the driving torque signal and the automobile running speed signal to the working gear judgment strategy layer, and the working gear judgment strategy layer analyzes the driving torque signal and the automobile running speed signal to obtain a target gear signal.
And step B, calculating the target requirement,
and the gear shifting work control strategy layer analyzes and obtains the target requirement of the engine 1, the target requirement of the main driving motor 31 and the target requirement of the clutch according to the target gear signal and the working state information of each assembly of the hybrid power driving device and transmits the target requirement information to the actuating mechanism control layer.
Step C, executing the action command,
the executing mechanism control layer sends corresponding action executing commands to the engine 1, the main driving motor 31, the first clutch 611 and the second clutch 621 according to the target demand information;
the new gear clutch starts to move to a joint, the original gear clutch starts to be separated, the main driving motor 31 provides power for the movement of the automobile, and if the original gear clutch is not completely separated, the separation is continued until the original gear clutch is completely separated;
after the original gear clutch is completely separated, the new gear clutch begins to enter a sliding friction stage;
and adjusting the output rotating speed of the engine 1, and when the difference between the output rotating speed of the engine 1 and the rotating speed of the driven assembly of the new gear clutch is within a set threshold, adjusting the output torque of the engine 1, completing the engagement of the new gear clutch, gradually reducing the compensation torque provided by the main drive motor 31 for the automobile until the compensation torque disappears, and starting the new gear.
As shown in fig. 14, the operation of the engine 1 when the hybrid drive unit power output operation mode is switched between the first gear mode and the second gear mode in step C is as follows:
step C1, determining the target throttle opening of the engine 1 through an engine MAP table look-up model according to the target requirement of the engine 1 and the current rotating speed of the engine 1;
step C2, adjusting the current throttle opening of the engine 1 by the engine controller so as to adjust the output torque of the engine 1;
and step C3, judging the magnitude of the clutch output torque and the driver request driving torque, if the clutch output torque is smaller than the driver request driving torque, providing the residual torque required by the power compensation automobile driving by the main driving motor 31 until the clutch output torque reaches the driver request driving torque, stopping providing the power compensation by the main driving motor 31, and starting working at the new gear.
Step four, the action command executes the verification,
and the executing mechanism control layer judges whether each assembly of the hybrid power driving device continuously executes the action command according to the information of whether the action command is finished or not, and if the action command is judged to be not finished, the corresponding assembly of the hybrid power driving device continuously executes the corresponding action command until the action command is finished.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
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 hybrid drive apparatus for a hybrid vehicle, characterized in that: the hybrid power system comprises an engine (1), an auxiliary motor assembly (2), a main driving motor assembly (3), an output shaft (4) and a differential assembly (5), wherein the auxiliary motor assembly (2) is connected with the engine (1), and the engine (1) and the main driving motor assembly (3) are connected with the differential assembly (5) through the output shaft (4); the method is characterized in that: the auxiliary motor assembly (2) comprises an auxiliary motor (21), an auxiliary motor gear (22), a brake A (23) and an auxiliary motor linkage device (24), wherein the auxiliary motor linkage device (24) is sleeved on an engine output shaft (11) of the engine (1), the brake A (23) can lock the auxiliary motor linkage device (24), the auxiliary motor linkage device (24) is connected with an output shaft of the auxiliary motor (21) through the auxiliary motor gear (22), and a gear shifting execution device (6) is arranged between the engine output shaft (11) and an output shaft (4).
2. The hybrid drive device for a hybrid vehicle according to claim 1, characterized in that: the main driving motor assembly (3) comprises a main driving motor (31), a connecting gear (32) and a brake B (33), wherein an output shaft of the main driving motor (31) is connected with an output shaft (4) through the connecting gear (32), and the brake B (33) can lock the output shaft of the main driving motor (31).
3. The hybrid drive device for a hybrid vehicle according to claim 1, characterized in that: the gear shifting execution device (6) comprises a first gear control device (61) and a second gear control device (62); the first gear control device (61) comprises a first clutch (611) and a first gear (612), the engine output shaft (11) is connected with the first gear (612) through the first clutch (611), and the first gear (612) is connected with the output shaft (4); the second gear control device (62) comprises a second clutch (621) and a second gear (622), the engine output shaft (11) is connected with the second gear (622), and the second gear (622) is connected with the output shaft (4) through the second clutch (621).
4. The hybrid drive apparatus for a hybrid vehicle according to claim 1, characterized in that: the differential assembly (5) comprises a differential (51) and a main reducer gear (52), and the differential (51) is connected with the output shaft (4) through the main reducer gear (52).
5. A control method of a hybrid drive apparatus for a hybrid vehicle, characterized by comprising the steps of:
the method comprises the steps of firstly, collecting information,
data interaction management layer collects current hybrid power driving deviceSetting working state information, driver intention information and automobile running condition information of each assembly, wherein the driver intention information comprises driver request driving torque TreqeAnd driver requested braking torque TbrThe information of the running condition of the automobile comprises the state of charge (SOC) of the power supply and the running speed V of the automobilecurrrnt；
Step two, analyzing the information data,
the data interaction analysis layer identifies the working state information, the driver intention information and the automobile running condition information of each assembly of the hybrid power driving device and determines automobile state information, and the data interaction analysis layer sends the analyzed automobile state information to the automobile control strategy layer;
step three, executing a power output working mode,
the automobile control strategy layer analyzes and calculates according to automobile state information, determines a power output working mode of the hybrid power driving device, and issues a working mode execution command to the execution mechanism control layer, the execution mechanism control layer controls each assembly of the hybrid power driving device to complete a corresponding action command according to the working mode execution command, and feeds back information of whether the action command is completed to the execution mechanism control layer, so that the hybrid power driving device realizes power output of the corresponding working mode, and the action command comprises an engine (1) control command, an auxiliary motor assembly (2) control command, a main driving motor assembly (3) control command, a power supply control command, a first clutch (611) control command and a second clutch (621) control command;
step four, the action command executes the verification,
and the executing mechanism control layer judges whether each assembly of the hybrid power driving device continuously executes the action command according to the information of whether the action command is finished or not, and if the action command is not finished, the corresponding assembly of the hybrid power driving device continuously executes the corresponding action command until the action command is finished.
6. The control method of the hybrid drive apparatus for a hybrid vehicle according to claim 5, characterized in that: in the third step, the power output working mode of the hybrid power driving device comprises the following steps: the system comprises a pure electric working mode, a range extending working mode, an engine direct-drive working mode, a hybrid power drive working mode and an energy braking recovery working mode; the hybrid power driving mode comprises a combined driving working mode and a driving power generation working mode.
7. The control method of a hybrid drive apparatus for a hybrid vehicle according to claim 6, characterized in that the control method of the hybrid drive apparatus power output operation mode is:
in the pure electric working mode, the power supply is switched on,
the brake B (33), the first clutch (611) and the second clutch (621) are disconnected, the brake A (23) is connected, the engine (1) and the auxiliary motor assembly (2) are in an inoperative state, a power supply supplies power to the main driving motor assembly (3), and the output power of the main driving motor assembly (3) is transmitted to the differential (51) through the output shaft of the main driving motor (31), the connecting gear (32), the output shaft (4) and the main reducer gear (52) to be output;
the range-extended working mode is that the distance between the two working modes is increased,
the brake A (23), the brake B (33), the first clutch (611) and the second clutch (621) are disconnected, a power supply supplies power to the auxiliary motor assembly (2) and the main driving motor assembly (3), the auxiliary motor assembly (2) drives the engine (1) to be switched into a working mode, the engine (1) outputs power to drive the auxiliary motor assembly (2) to generate power through the auxiliary motor linkage device (24) and the auxiliary motor gear (22), electric power generated by the auxiliary motor assembly (2) charges the power supply or directly drives the main driving motor assembly (3), and the main driving motor assembly (3) outputs power to the differential (51) through an output shaft of the main driving motor (31), the connecting gear (32), the output shaft (4) and the main reducer gear (52);
the engine direct-drive working mode comprises an engine direct-drive first-gear working mode and an engine direct-drive second-gear working mode;
the engine directly drives a first gear working mode,
the brake A (23) and the second clutch (621) are disconnected, the brake B (33) and the first clutch (611) are connected, the main driving motor assembly (3) is in an inoperative state, a power supply supplies power to the auxiliary motor assembly (2), the auxiliary motor assembly (2) drives the engine (1) to rotate to a working mode, and power output by the engine (1) is transmitted to the differential (51) to be output through the engine output shaft (11), the first clutch (611), the first gear (612), the output shaft (4) and the main reducer gear (52);
the engine directly drives a two-gear working mode,
the brake A (23) and the first clutch (611) are disconnected, the brake B (33) and the second clutch (621) are connected, the main driving motor assembly (3) is in an inoperative state, a power supply supplies power to the auxiliary motor assembly (2), the auxiliary motor assembly (2) drives the engine (1) to rotate to a working mode, and power output by the engine (1) is transmitted to the differential (51) to be output through the engine output shaft (11), the second clutch (621), the second gear (622), the output shaft (4) and the main reducer gear (52);
the hybrid power driving working mode comprises a combined driving working mode and a driving power generation working mode;
a combined driving working mode which is divided into a combined driving first-gear working mode and a combined driving second-gear working mode;
the first-gear working mode is driven in a combined mode,
the brake A (23), the brake B (33) and the second clutch (621) are disconnected, the first clutch (611) is connected, a power source supplies power to the auxiliary motor assembly (2) and the main driving motor assembly (3), the auxiliary motor assembly (2) drives the engine (1) to rotate to a working mode, and power output by the engine (1) is transmitted to the output shaft (4) through the engine output shaft (11), the first clutch (611) and the first gear (612); the output power of the main drive motor assembly (3) is transmitted to the output shaft (4) through the output shaft of the main drive motor (31) and the connecting gear (32); the two power are converged at the output shaft (11) and then transmitted to the differential (51) through the main reducer gear (52) for output;
the two-gear working mode is driven in a combined manner,
the brake A (23), the brake B (33) and the first clutch (611) are disconnected, the second clutch (621) is connected, a power supply supplies power to the auxiliary motor assembly (2) and the main driving motor assembly (3), the auxiliary motor assembly (2) drives the engine (1) to rotate to a working mode, and power output by the engine (1) is transmitted to the output shaft (4) through the engine output shaft (11), the second clutch (621) and the second gear (622); the output power of the main drive motor assembly (3) is transmitted to the output shaft (4) through the output shaft of the main drive motor (31) and the connecting gear (32); the two power are converged at the output shaft (11) and then transmitted to the differential (51) through the main reducer gear (52) for output;
the system comprises a driving power generation working mode and a driving power generation working mode, wherein the driving power generation working mode comprises a driving power generation first-gear working mode and a driving power generation second-gear working mode;
the running vehicle generates electricity in a first gear working mode,
the brake A (23), the brake B (33) and the second clutch (621) are disconnected, the first clutch (611) is connected, the power supply supplies power to the auxiliary motor assembly (2), the auxiliary motor assembly (2) drives the engine (1) to be in a working mode, the power output by the engine (1) is transmitted to the output shaft (4) through the engine output shaft (11), the first clutch (611) and the first gear (612) to be split: one path of power is transmitted to a differential (51) through a main speed reducer gear (52) to be output; the other path of power drives a main driving motor assembly (3) to generate power through an output shaft of a connecting gear (32) and a main driving motor (31), and the power generated by the main driving motor assembly (3) charges a power supply;
the running vehicle generates electricity in a two-gear working mode,
the brake A (23), the brake B (33) and the first clutch (611) are disconnected, the second clutch (621) is connected, the power supply supplies power to the auxiliary motor assembly (2), the auxiliary motor assembly (2) drives the engine (1) to rotate to a working mode, the power output by the engine (1) is transmitted to the output shaft (4) through the engine output shaft (11), the second clutch (621) and the second gear (622) to be split: one path of power is transmitted to a differential (51) through a main speed reducer gear (52) for output; the other path of power drives a main driving motor assembly (3) to generate power through an output shaft of a connecting gear (32) and a main driving motor (31), and the power generated by the main driving motor assembly (3) charges a power supply;
the energy braking and recovering working mode is that,
the brake B (33), the first clutch (611) and the second clutch (621) are disconnected, the brake A (23) is connected, the engine (1) and the auxiliary motor assembly (2) are in a non-operating state, in the braking process, power recovered by the differential (51) in the braking process drives the main driving motor assembly (3) to generate power through the main reducer gear (52), the output shaft (4), the connecting gear (32) and the output shaft of the main driving motor (31), and electric power generated by the main driving motor assembly (3) charges a power supply.
8. The control method of the hybrid drive apparatus for a hybrid vehicle according to claim 5, characterized in that: the determination steps for determining the power output working mode of the hybrid power driving device in the third step are as follows:
s1: in the starting phase of the automobile,
according to the automobile state information transmitted by the data interaction analysis layer, the state of charge (SOC) of the power supply is judged,
if the state of charge (SOC) of the power supply is larger than the range-extended working mode starting threshold SOCswitchThe power output working mode of the hybrid power driving device is a pure electric working mode;
if the SOC of the power supply is less than the SOC of the range-extended working mode starting threshold SOCswitchAnd the state of charge (SOC) of the power supply is less than the starting threshold SOC of the power supplyLThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
s2: in the driving stage of the automobile,
during the driving stage of the automobile, the driver request driving torque T is judgedreqeAnd driver requested braking torque Tbr，
If the driver requests the driving torque Treqe< 0, driver requested braking torque TbrWhen the power output working mode of the hybrid power driving device is more than 0, the power output working mode of the hybrid power driving device is a range-extending working mode;
if the driver requests the driving torque TreqeIf more than 0, the running speed V of the automobile is judgedcurrrntDriver requested drive torque TreqeIs prioritized over the running speed V of the automobilecurrrntThe determination is made as to whether or not the target,
when the running speed V of the automobilecurrrnt< vehicle speed V driven by engineswitchWhen the hybrid power driving device is in the power output working mode, the hybrid power driving device is in the range-extending working mode;
when the running speed V of the automobilecurrrntVehicle speed V driven by engineswitchWhile continuing to determine the driver's requested driving torque Treqe，
If TreqeMaximum torque threshold T for efficient engine operationmaxThe power output working mode of the hybrid power driving device is a combined driving working mode, and a combined driving first-gear working mode or a combined driving second-gear working mode is judged according to working requirements;
minimum torque threshold T for efficient engine operationmin＜Treqe< threshold value T of maximum torque for efficient operation of enginemaxThe power output working mode of the hybrid power driving device is an engine direct-drive working mode, and the engine direct-drive first-gear working mode or the engine direct-drive second-gear working mode is judged according to working requirements;
if Treqe< threshold value T for minimum torque for efficient operation of engineminThe power output working mode of the hybrid power driving device is a driving power generation mode, and a driving power generation first-gear working mode or a driving power generation second-gear working mode is judged according to working requirements;
s3: in the braking stage of the automobile,
according to the automobile state information transmitted by the data interaction analysis layer, the braking torque T requested by the driver is judgedbr，
If the driver requests the braking torque TbrAnd if the power output working mode of the hybrid power driving device is more than 0, the power output working mode of the hybrid power driving device is an energy braking and recovering working mode.
9. The control method of the hybrid drive apparatus for the hybrid vehicle according to claim 5, characterized in that: the control method for switching the power output working mode between the first gear mode and the second gear mode of the hybrid power driving device in the steps S1 and S2 comprises the following steps:
step A, analyzing the information data,
the data analysis system analyzes a driving torque signal requested by a driver and an automobile running speed signal according to automobile state information transmitted by the data interaction management layer and transmits the driving torque signal and the automobile running speed signal to the working gear judgment strategy layer, and the working gear judgment strategy layer analyzes the driving torque signal and the automobile running speed signal to obtain a target gear signal;
and step B, calculating the target requirement,
the gear shifting work control strategy layer analyzes and obtains the target requirement of the engine (1), the target requirement of the main driving motor (31) and the target requirement of the clutch according to the target gear signal and the working state information of each assembly of the hybrid power driving device and transmits the target requirement information to the actuating mechanism control layer;
step C, executing the action command,
the executing mechanism control layer sends corresponding action executing commands to the engine (1), the main driving motor (31), the first clutch (611) and the second clutch (621) according to the target demand information,
the new gear clutch starts to move to a joint, the original gear clutch starts to separate, the main driving motor (31) provides power for the movement of the automobile, if the original gear clutch is not completely separated, the separation is continued until the original gear clutch is completely separated,
after the original gear clutch is completely separated, the new gear clutch begins to enter a slipping stage,
the output rotating speed of the engine (1) is adjusted, when the difference between the output rotating speed of the engine (1) and the rotating speed of the driven assembly of the new gear clutch is within a set threshold value, the output torque of the engine (1) is adjusted, the new gear clutch is engaged, the compensation torque provided by the main driving motor (31) for the automobile is gradually reduced to disappear, and the new gear starts to work.
10. The control method of the hybrid drive apparatus for a hybrid vehicle according to claim 9, characterized in that: and C, when the power output working mode of the hybrid power driving device is switched between the first gear mode and the second gear mode, the working process of the engine (1) is as follows:
step C1, determining the target throttle opening of the engine (1) through an engine table look-up model according to the target requirement of the engine (1) and the current rotating speed of the engine (1);
step C2, adjusting the current throttle opening of the engine (1) by the engine controller so as to adjust the output torque of the engine (1);
and step C3, judging the magnitude of the clutch output torque and the driver request driving torque, if the clutch output torque is smaller than the driver request driving torque, providing the residual torque required by the power compensation automobile driving by the main driving motor (31) until the clutch output torque reaches the driver request driving torque, stopping providing the power compensation by the main driving motor (31), and starting working in a new gear.
CN202210580095.3A 2022-05-26 2022-05-26 Hybrid power driving device for hybrid electric vehicle and control method thereof Pending CN114771235A (en)

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