CN108215761A - Vehicle, series-parallel hybrid electric system and hybrid system control method - Google Patents

Vehicle, series-parallel hybrid electric system and hybrid system control method Download PDF

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Publication number
CN108215761A
CN108215761A CN201611141497.4A CN201611141497A CN108215761A CN 108215761 A CN108215761 A CN 108215761A CN 201611141497 A CN201611141497 A CN 201611141497A CN 108215761 A CN108215761 A CN 108215761A
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CN
China
Prior art keywords
electric
motor
mode
vehicle
gear
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Pending
Application number
CN201611141497.4A
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Chinese (zh)
Inventor
王印束
刘小伟
王兴
王富生
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Zhengzhou Yutong Bus Co Ltd
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Zhengzhou Yutong Bus Co Ltd
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Application filed by Zhengzhou Yutong Bus Co Ltd filed Critical Zhengzhou Yutong Bus Co Ltd
Priority to CN201611141497.4A priority Critical patent/CN108215761A/en
Priority to PCT/CN2017/115499 priority patent/WO2018108053A1/en
Publication of CN108215761A publication Critical patent/CN108215761A/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
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—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 with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
    • B60W20/30—Control strategies involving selection of transmission gear ratio
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • 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
    • 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
    • B60K6/48—Parallel type
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • B60K2006/4841—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range the gear provides shifting between multiple ratios
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/10—Accelerator pedal position
    • 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position
    • 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
    • B60W2710/02—Clutches
    • B60W2710/021—Clutch engagement 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
    • B60W2710/10—Change speed gearings
    • B60W2710/1005—Transmission ratio engaged
    • 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
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/40—Torque distribution
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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Abstract

The present invention relates to vehicle, series-parallel hybrid electric system and hybrid system control methods, series-parallel hybrid electric system includes the second motor, the gear being connected with the second motor and the engine coupled by planetary gear mechanism, the first motor and system output shaft, gearshift is provided between system output shaft and the second motor, the gear switching of gear can be achieved in gearshift in action process.The present invention solves the technical issues of lower pattern of pure electric vehicle work in the prior art is single.

Description

Vehicle, series-parallel hybrid electric system and hybrid system control method
Technical field
The present invention relates to vehicle, series-parallel hybrid electric system and the hybrid power system controlling parties in hybrid power field Method.
Background technology
Series-parallel hybrid electric system has huge relative to series connection type hybrid power system and parallel connection type hybrid power system Performance advantage.Existing series-parallel hybrid electric system such as Chinese patent CN105857054A, application are entitled, and " a kind of mixing is dynamic Hybrid power system disclosed in Force system and the hybrid vehicle using the system ", the hybrid power system include passing through Engine, the generator (i.e. the first motor) of planetary gear mechanism coupled drive, hybrid power system are further included for power generation Generation braker (i.e. lock device) that the rotor of machine is braked, driving motor (i.e. the second motor) and it is connected to driving motor Gear on rotor, gear are connected with system output shaft, are provided between system output shaft and planetary gear mechanism Clutch.The hybrid power system can realize various control pattern, such as electric-only mode, engine power generation cascade mould Formula, engine driving power generation mode, engine direct drive pattern etc., but existing this hybrid power system also exists much not Foot, such as be in electric-only mode operating mode：Vehicle with low speed or Smaller load when driving, clutch separation, driving motor It is rotated by gear reduction of speed torque rear-guard motor car wheel, vehicle is travelled with pure electric drive mode, started when avoiding running at a low speed The high oil consumption that machine is stated due to idling.Only there are one reduction of speed torque pattern under the electric-only mode of existing hybrid power system, Either low speed or fast state, the second motor will could intervene transmission after reduction of speed torque, be unfavorable for the second motor Efficiency play, pattern is excessively single, it is impossible to meet the various operating modes in vehicle traveling, it is possible to which power is excessive when causing low speed During high speed the problem of power cycle；When the vehicle is driving at high speed, under engine direct drive state, driving motor must be located the prior art In high speed with state is turned, system effectiveness is relatively low.
Invention content
It is of the prior art to solve the object of the present invention is to provide a kind of series-parallel hybrid electric system control method Electric-only mode Single-issue；The present invention also aims to provide one kind to be exclusively used in implementing above-mentioned series-parallel hybrid electric system The series-parallel hybrid electric system of control method and the vehicle using the series-parallel hybrid electric system.
To achieve the above object, the technical solution of series-parallel hybrid electric system is in the present invention：
Series-parallel hybrid electric system, the gear being connected including the second motor, with the second motor and by planet tooth Engine, the first motor and the system output shaft of mechanism coupling are taken turns, gearshift dress is provided between system output shaft and the second motor It puts, the gear switching of gear can be achieved in gearshift in action process.
Gearshift also has neutral gear position, be provided in the drive path of engine and planetary gear mechanism the first locking from The second lock-up clutch is provided in the drive path of clutch, the first motor and planetary gear mechanism.
The technical solution of vehicle is in the present invention：
Vehicle, including vehicle frame and the series-parallel hybrid electric system being set on vehicle frame, series-parallel hybrid electric system packet Include the second motor, the gear being connected with the second motor and the engine coupled by planetary gear mechanism, the first motor and System output shaft, is provided with gearshift between system output shaft and the second motor, gearshift can be achieved in action process The gear switching of gear.
Gearshift also has neutral gear position, be provided in the drive path of engine and planetary gear mechanism the first locking from The second lock-up clutch is provided in the drive path of clutch, the first motor and planetary gear mechanism.
The technical solution of hybrid system control method is in the present invention：
Hybrid system control method, step are as follows：
When vehicle is in electric-only mode, current vehicle speed is detected, with speed threshold value comparison；
If current vehicle speed is more than the speed threshold value, the output or not after gear acceleration subtracts torsion of the power of the second motor It is directly exported by gear, then vehicle enters high speed electric-only mode；If current vehicle speed be less than the speed threshold value, second The power of motor exports after gear deceleration torque, then vehicle enters low speed electric-only mode.
The electric-only mode includes the first motor and the second motor is in the first electric-only mode of motoring condition, only First motor is in the second electric-only mode of motoring condition and only the second motor is in the third pure electric vehicle mould of motoring condition Formula；The first motor Maximum Power Output P1Less than the second motor Maximum Power Output P2, P2＞ P1；
The high speed electric-only mode includes the first electric-only mode and high speed third electric-only mode at a high speed；
The low speed electric-only mode includes the first electric-only mode of low speed and low speed third electric-only mode.
Judge that vehicle is in the criterion of first electric-only mode and includes：
1)PDemand≤P1+P2, V≤VPure electricity H；
2)PDemand＞ P2；Or：PDemand≤P1And synthesis motor drive efficiency is best during in the first electric-only mode；Or： P1＜ PDemand＜ P2, and in the first electric-only mode when synthesis motor drive efficiency it is best；
Wherein, criterion 1), 2) for mutually with relationship, PDemandFor vehicle demand power；VPure electricity HFor vehicle under electric-only mode Max. speed.
Judge that vehicle is in the criterion of second electric-only mode and includes：
3)PDemand≤P1+P2, V≤VPure electricity H, PDemand≤P1, motor driven systems efficiency is integrated during in the second electric-only mode Most preferably；
Wherein, PDemandFor vehicle demand power；VPure electricity HMax. speed for vehicle under electric-only mode.
Judge that vehicle is in the criterion of the third electric-only mode and includes：
1)PDemand≤P1+P2, V≤VPure electricity H；
4)PDemand≤P1And power is not optimal during in first, second electric-only mode；Or：P1＜ PDemand＜ P2, and It is not that comprehensive motor drive efficiency is best during in the first electric-only mode；
Wherein, criterion 1), 4) for mutually with relationship, PDemandFor vehicle demand power；VPure electricity HFor vehicle under electric-only mode Max. speed.
The criterion that the vehicle is in electric-only mode includes power battery SOC ＞ SOCL, and wherein SOCL is pure electric vehicle mould The SOC threshold of formula.
Beneficial effects of the present invention are：Under electric-only mode, if current vehicle speed is less than speed threshold value, gearshift action In low gear, that is, reduction of speed torque gear, the power of the second motor is exported through gear, reduction of speed torque is realized, if current vehicle speed More than speed threshold value, gearshift action, gearshift is in high gear, and the power of the second motor is added through gear subtracts torsion Output is directly exported without gear, ensures the working efficiency of the second motor,.
Further, under mixed at high speed dynamic mode, the second lock-up clutch locking realizes that engine direct drives pattern, And pass through gearshift action gear and be in neutral gear position, the loss in efficiency that the second motor high speed servo is avoided to bring, Improve straight drive efficiency.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of series-parallel hybrid electric system in the present invention；
Fig. 2 is the control logic figure of one embodiment of hybrid system control method in the present invention；
Fig. 3 be operating mode in hybrid system control method embodiment achieved by hybrid power system with it is corresponding The working condition table of component.
Specific embodiment
The embodiment of vehicle is as shown in Figure 1：Including vehicle frame and the hybrid power system being set on vehicle frame, hybrid power system System includes the engine 1, the first motor 4 and the system output shaft 12 that are coupled by planetary gear mechanism 8, specific coupled relation For engine 1 is connected with the planet carrier 8B of planetary gear mechanism, the rotor 4A of the first motor and the sun gear of planetary gear mechanism 8C is connected, and system output shaft 12 is connected with the gear ring 8A of planetary gear mechanism, in the drive path of engine 1 and planet carrier 8B 2 and first lock-up clutch 3 of torsional damper is provided with, the is provided in drive path of first motor 4 with sun gear 8C Two lock-up clutches 5.Hybrid power system further includes the second motor 11 and the gear 9 being connected with the second motor, variable-speed motor Structure 9 include primary speed-down gear set and double-reduction gear group, primary speed-down gear set include level-one gear wheel and with second electricity The level-one pinion gear that the rotor 11A of machine is coaxially connected, double-reduction gear group include two level pinion gear and same with level-one pinion gear The two level gear wheel of axis setting, two level pinion gear are coaxially connected with level-one gear wheel, while level-one pinion gear is exported with system Axis is coaxially set.Gearshift 10 is provided on system output shaft 12, gearshift is to synchronize selector, the biography of gearshift Dynamic component 10A have in action process neutral gear position, the high gear that is connected with gear upstream and with gear downstream phase Low gear even, in the present embodiment, in high gear, transmission parts 10A is connected to the input terminal 9A of gear, in low gear When, transmission parts 10A is connected on the output terminal 9B of gear.Gearshift in high gear, gear be equivalent to by Gearshift " short circuit ", the power of the second motor can be exported without deceleration and directly to system output shaft, and gearshift exists During low gear, the power of the second motor is by backward system output shaft output of slowing down, and in neutral gear, gearshift breaks gearshift Open the transmission between the second motor and system output shaft.Hybrid power system further include electrical source of power 9 and with the first motor, second The integrated manipulator 6 of motor control connection, gearshift, first, second lock-up clutch are controlled by integrated manipulator.
The achievable operating mode of hybrid power system and corresponding control method are see hybrid power in this vehicle embodiments The embodiment of system control method, this will not be detailed here.In other embodiments of the invention, gear can be fixed shaft type The number of gear drive or dynamic gear train transmission mechanism, wherein gear set can be configured as needed, than Such as say that gear can only include a gear deceleration group or the gear deceleration group of three or more；Level-one pinion gear, two level are big Gear may not be coaxial relation with system output shaft；Gearshift can also use synchronizer structure or may be used The gearshift of the other forms such as clutch, brake；It can not also use integrated form controller, such as the first motor, the Two motors, clutch lock device and gearshift are controlled respectively by corresponding controller；Enter at a high speed needing the second motor During pattern, the power of the second motor directly exports a kind of only form without deceleration mechanism, when gear has speedup part, The power of second motor can export after the speedup part speedup of gear.
The embodiment of hybrid power system is as shown in Figure 1：The concrete structure of hybrid power system is implemented with above-mentioned each vehicle Hybrid power system described in example is identical, and this will not be detailed here.
The embodiment of hybrid system control method is as shown in Figures 1 to 3：Involved in the hybrid system control method The hybrid power system arrived is identical with the hybrid power system described in above-mentioned vehicle embodiments, at this to its concrete structure no longer It is described in detail.
The specific works pattern of the multimode series-parallel hybrid electric system has following several：Electric-only mode, pure electric vehicle mould Formula include three kinds of operating modes, i.e. the first electric-only mode, the second electric-only mode and third electric-only mode, Three models Selection is selected by two conditions of power requirement and efficiency optimization.Specific logic judgment is as shown in Figure 2：Wherein PDemand For vehicle demand power, P1For the maximum power of the first motor, P2For the maximum power of the second motor, P1＜ P2。
First electric-only mode, the first motor, the second motor drive jointly under this pattern, and the first lock-up clutch is in lock Death situation state, the second lock-up clutch are in Unlocked state.System can divide again according to whether vehicle velocity V is more than speed threshold value at this time For the first electric-only mode of the first electric-only mode of low speed and high speed, speed threshold value VHIt represents, VHBoundary for low speed and high speed Speed, the velocity amplitude is related with vehicle, and the high speeds of different automobile types, low speed boundary speed are different, such as the V of busH For 35km/h, when the speed of bus is higher than 35km/h, it is believed that bus is in fast state；When the speed of bus is less than During 35km/h, it is believed that bus is in lower-speed state.
As V≤VHWhen, system is in lower-speed state, and the transmission parts of gearshift 10 and the output terminal 9B of gear are tied Close, the input of system at this time be the first motor 4 and the second motor 11, system output shaft 12 be output shaft, specific torque relationship For：Tout=k1TMG1+k2TMG2, wherein k1For planetary gear train gear ring 8A radiuses and the ratio of sun gear 8C radiuses, k2For speed change Transmission ratio, TMG1For 4 torque of the first motor, TMG2For 11 torque of the second motor, ToutFor 12 torque of system output shaft, it is suitble to Operating mode is started to walk and drives in low speed.
As V ＞ VHWhen, system is in fast state, and gearshift 10 is combined with the input terminal 9A of gear, is at this time The input of system is the first motor 4 and the second motor 11, is exported as system output shaft 12, and specific torque relationship is：Tout= k1TMG1+TMG2, it is suitable for high-performance cruise and driving operating mode.
Second electric-only mode：This pattern is operated alone for the first motor, and the second motor does not work, the first lock-up clutch 3 are in locking state, and the second lock-up clutch 5 is in Unlocked state.Its transmission parts 10A is in freely by gearshift 10 State, i.e. neutral position state, the at this time input of system are the first motor 4, export and are for 12 specific torque relationship of system output shaft： Tout=k1TMG1。
Third electric-only mode：This pattern is operated alone for the second motor, and the first motor is servo-actuated, the first lock-up clutch 3 In Unlocked state, the second lock-up clutch 5 is in Unlocked state.System can be divided into low speed and at a high speed two kinds again at this time State：
As V≤VHWhen, system is in lower-speed state, and gearshift 10 is by its transmission parts 10A and gear output terminal 9B is combined, and the input of system at this time is the second motor 11, is exported as system output shaft 12, and specific torque relationship is：Tout= k2TMG2, wherein k2For gear gearratio, it is suitable for low speed starting and driving operating mode.
As V ＞ VHWhen, system is in fast state, and gearshift 10 is by its transmission parts 10A and gear input terminal 9A is combined, and the input of system at this time is the second motor 11, is exported as system output shaft 12, fast than being 1, specific torque relationship For：Tout=TMG2, it is suitable for high-performance cruise and driving operating mode.
Mixed dynamic model formula：Engine 1 works under this pattern, and the first motor 4 generates electricity, and the second motor is in motoring condition, power Power supply 7 does not provide or provide power according to vehicle demand to the second motor 11, and 1 and second motor 11 of engine drives vehicle jointly It travels, whether system is more than V according to vehicle velocity V at this timeLockLow speed and high speed two states, V can be divided into againLockAt planetary gear train In the critical speed of mechanical points.
As V≤VLockWhen, system is in lower-speed state, and the first lock-up clutch 3 is in Unlocked state, the second locking clutch Device 5 is in Unlocked state.Gearshift 10 is combined its transmission parts 10A with transmission chain output terminal 9B, and system is defeated at this time Enter 1 and second motor 11 of engine, export as system output shaft 12, specific torque relationship is：Tout=k1(1+k1)TE+ k2TMG2, wherein k1For planetary gear train gear ring 8A radiuses and the ratio of sun gear 8C radiuses, k2For transmission chain gearratio, TMG2For Second motor, 11 torque, TEFor 1 torque of engine, ToutFor 12 torque of system output shaft, it is suitable for driven at low speed operating mode.
Work as V>VLockWhen, system is in fast state, and the first lock-up clutch 3 is in Unlocked state, the second locking clutch Device 5 is in locking state.Gearshift 10 is combined its transmission parts 10A with transmission chain input terminal 9A, the input of system at this time 1 and second motor 11 of engine, exports as system output shaft 12, and specific torque relationship is：Tout=k1(1+k1)TE+TMG2, fit Together in high-speed driving operating mode.
According to the mechanical points of planet combined hybrid system, by carrying out low speed with gearshift 10 with the second lock-up clutch 5 It, can be to avoid the power cycle problem of existing planet combined hybrid system, i.e., with the pattern switching of mixed at high speed driving：First motor 4 In driving condition, the second motor 11 is in generating state.Ensure any moment in combination drive, the first motor 4 is located forever In generating state, the second motor 11 prevents additional electromechanical two times transfer process, improves dynamical system forever in driving condition Efficiency.
Engine direct drives pattern：Engine 1 works under this pattern, and the first motor 4 does not work, and the second motor 11 does not work, First lock-up clutch 3 is in Unlocked state, and the second lock-up clutch 5 is in locking state, and gearshift 10 is driven Component 10A is in free state, i.e. neutral gear position, and engine 1 provides power drive vehicle traveling, at this time the input engine of system 1, it exports as system output shaft 12, specific torque relationship is：Tout=k1(1+k1)TE, it is suitable for vehicle to run at high speed, and Vehicle power demand is located at the driving operating mode in engine high-efficiency area, and it is existing when engine direct drives to avoid existing combined hybrid system Electromechanical transformation problem improves the efficiency of dynamical system, while during high speed, and gear is in neutral gear position, can be to avoid second The loss in efficiency of motor high speed servo, lifting system efficiency.
Brake energy recovery pattern：Engine 1 does not work under this pattern, and the first motor 4 dallies, and the second motor 11 is in hair Electricity condition provides vehicle braking moment, and the first lock-up clutch 3 is in Unlocked state, and the second lock-up clutch 5 is in non-lock Death situation state, at this time system can be divided into low speed and high speed two states again：
As V≤VHWhen, system is in lower-speed state, and during low speed Brake energy recovery, gearshift 10 is by its transmission parts 10A is combined with transmission chain output terminal 9B, and the input of system at this time is the second motor 11, is exported as system output shaft 12, the second electricity The brake force of machine is applied to by system output shaft 12 on wheel, realizes Brake energy recovery, and specific torque relationship is：Tout =k2TMG2, it is suitable for low speed high torque braking, the stopping power of the second motor 11 can be efficiently used, fully recycle braking energy.
As V ＞ VHWhen, system is in fast state, and during high speed Brake energy recovery, gearshift 10 is by its transmission parts 10A is combined with transmission chain input terminal 9A, and the input of system at this time is the second motor 11, is exported as system output shaft 12, the second electricity The brake force of machine is applied to by system output shaft 12 on wheel, realizes Brake energy recovery, and specific torque relationship is：Tout =TMG2, it is suitable for braking at a high speed, to the speed demand of the second motor 11 when can reduce high speed, reduces in the design of the second motor 11 Demand to the bearing range of speeds.
Above-mentioned various operating modes can refer to attached drawing 3.
The specific control method of above-mentioned multimode planet series-parallel hybrid electric system is：
As shown in Fig. 2, wherein, V is Vehicle Speed, VHThe boundary speed that low speed and high speed are in for system respectively is Speed threshold value, VLockingTo mix the boundary speed of the second lock-up clutch locking under dynamic model formula, VPure electricity HHighest for pure power mode traveling Rate limitation, SOCLFor the low SOC lower limiting values of vehicle power power supply, PDemandFor vehicle demand power, P1For the first motor maximum power, P2For the second motor maximum power.
The first step determines whether to belong to Brake energy recovery pattern according to the state of brake pedal and gas pedal, when When brake pedal is operated or gas pedal is not operated, into Brake energy recovery pattern, while according to vehicle velocity V Whether V is more thanHTo determine whether into high speed Brake energy recovery pattern, as V ＞ VHWhen, into high speed Brake energy recovery mould Formula, as V≤VHWhen enter low speed Brake energy recovery pattern.Otherwise enter second step.
Whether second step is less than lower limiting value SOC according to vehicle electrical source of power SOC valueLTo judge whether vehicle enters low speed Mixed dynamic model formula, as electrical source of power SOC≤SOCLWhen, dynamic model formula is mixed into low speed, is otherwise walked into third.
Third walks, according to vehicle power demand PDemandWhether bi-motor maximum power P is more than1+P2Whether it is less than with vehicle velocity V VPure electricity HTo determine whether, into pure power mode, to work as PDemand≤P1+P2, and V≤VPure electricity HWhen, into the 6th step, otherwise into the 4th step.
4th step, according to vehicle power demand whether in engine high-efficiency area, to determine whether driving mould into engine direct Formula when vehicle power demand is in engine high-efficiency area, drives pattern, otherwise into the 5th step into engine direct.
Whether the 5th step is more than V according to vehicle velocity VLockTo determine whether dynamic model formula is mixed into low speed, as V≤VLockWhen, entrance is low Otherwise the mixed dynamic model formula of speed enters mixed dynamic model formula at a high speed.
6th step, according to vehicle power demand PDemandWhether the second motor maximum power P is more than2To determine whether into One electric-only mode, works as PDemand>P2When, the first electric-only mode, while whether V is more than according to vehicle velocity VHTo determine whether enter high Fast first electric-only mode, as V ＞ VHWhen, into the first electric-only mode at a high speed, otherwise into the first electric-only mode of low speed. Work as PDemand≤P2When, into the 7th step
7th step, according to vehicle power demand PDemandWhether the first motor maximum power P is more than1To determine whether into Eight steps, work as PDemand>P1When, into the 8th step, PDemand≤P1When, into the 9th step.
8th step, judges whether the first electric-only mode integrates motor driven systems efficiency most preferably (i.e. power optimized), such as Fruit is, whether is more than V into the first electric-only mode, while according to vehicle velocity VHTo determine whether enter the first pure electric vehicle mould at a high speed Formula, as V ＞ VHWhen, into the first electric-only mode at a high speed, otherwise into the first electric-only mode of low speed.If the first pure electric vehicle Mode power is not optimal then into third electric-only mode, while whether is more than V according to vehicle velocity VHTo determine whether enter high Fast third electric-only mode, as V ＞ VHWhen, into high speed third electric-only mode, otherwise into low speed third electric-only mode. Comprehensive motor driven systems efficiency most preferably refers under the operating mode that each electric model is compared, comprehensive motor driven systems efficiency highest Electric model, such as it is best to judge whether the first electric-only mode integrates motor driven systems efficiency, refers to the first pure electric vehicle Pattern is compared with second, third electric-only mode, pattern that the first electric-only mode i.e. the first motor, the second motor work Under, the first motor, the second motor drive efficiency whether work independently (the second electric-only mode) higher than the first motor, second electricity Machine work independently (third electric-only mode) when drive efficiency.
9th step judges whether that the first electric-only mode synthesis motor driven systems efficiency is most preferably excellent, if so, into the One electric-only mode, while whether V is more than according to vehicle velocity VHTo determine whether enter the first electric-only mode at a high speed, as V ＞ VH When, into the first electric-only mode at a high speed, otherwise into the first electric-only mode of low speed.It is comprehensive if not the first electric-only mode It is best to close motor driven systems efficiency, into the tenth step.
Tenth step judges whether that the second electric-only mode synthesis motor driven systems efficiency is best, if so, into second Electric-only mode.It is best if not the second electric-only mode synthesis motor driven systems efficiency, into third electric-only mode, Whether V is more than according to vehicle velocity V simultaneouslyHTo determine whether into high speed third electric-only mode, as V ＞ VHWhen, into high speed third Electric-only mode, otherwise into low speed third electric-only mode.
Switched in the present invention using lock-up clutch, gearshift and planetary gear mechanism implementation pattern, avoid market Go up power cycle problem when excessive electrical power of the existing planet combined hybrid system in low speed and high speed；Utilize the second locking clutch Device, solve existing planet combined hybrid system engine direct drive pattern when because the first motor rotation blockage due to can not long-time engine direct The problem of connecing driving, when vehicle is travelled with higher speed and vehicle driving force demand is located at engine high-efficiency area, engine is high Speed directly drives vehicle, avoids existing combined hybrid system existing electromechanical transformation problem in combination drive, improves dynamical system Efficiency；Neutral gear is realized using gear, avoids the power of second motor high speed servo of the high speed engine directly under drive pattern Loss, improves the overall efficiency of dynamical system, using the first lock-up clutch, overcoming original planet row combined hybrid system can not The shortcomings that realizing bi-motor joint driving, driving can be simultaneously participated in bi-motor, improves system when accelerating under electric-only mode Acceleration capacity avoids the waste on power；It using the first lock-up clutch, can realize that the first motor is operated alone, utilize Gearshift can realize that the second motor is not involved in the neutral position state of transmission, top gear state and bottom gear state, optimization second The parameter of electric machine reduces torque-demand.It reduces to the brake force of the second motor and the demand of rotating speed, reduces in motor size and design Demand to the bearing range of speeds, while solve the problems, such as uphill starting scarce capacity.
In other embodiments of the invention：When hybrid power system does not have the first lock-up clutch, hybrid power The electric-only mode of system only has third electric-only mode, at this time under electric-only mode, when vehicle velocity V is more than speed threshold value VH When, into high speed third electric-only mode, when vehicle velocity V is less than or equal to speed threshold value VHWhen, into low speed third electric-only mode； Certain hybrid power system can also only have the first electric-only mode.

Claims (10)

1. series-parallel hybrid electric system, the gear being connected including the second motor, with the second motor and pass through planetary gear Engine, the first motor and the system output shaft of mechanism coupling, it is characterised in that：It is set between system output shaft and the second motor There is gearshift, the gear switching of gear can be achieved in gearshift in action process.
2. series-parallel hybrid electric system according to claim 1, it is characterised in that：Gearshift also has neutral gear position, It is provided with the first lock-up clutch in the drive path of engine and planetary gear mechanism, the first motor and planetary gear mechanism The second lock-up clutch is provided in drive path.
3. vehicle includes including vehicle frame and the series-parallel hybrid electric system being set on vehicle frame, series-parallel hybrid electric system Second motor, the gear being connected with the second motor and the engine coupled by planetary gear mechanism, the first motor and it is System output shaft, it is characterised in that：Gearshift is provided between system output shaft and the second motor, gearshift is in action process In can be achieved gear gear switching.
4. vehicle according to claim 3, it is characterised in that：Gearshift also has neutral gear position, engine and planet tooth It takes turns and the first lock-up clutch is provided in the drive path of mechanism, set in the drive path of the first motor and planetary gear mechanism There is the second lock-up clutch.
5. implement the hybrid system control method of the series-parallel hybrid electric system described in the claims 1, feature It is, step is as follows：
When vehicle is in electric-only mode, current vehicle speed is detected, with speed threshold value comparison；
If current vehicle speed is more than the speed threshold value, the power of the second motor after gear acceleration subtracts torsion output or without Gear directly exports, then vehicle enters high speed electric-only mode；If current vehicle speed is less than the speed threshold value, the second motor Power exported after gear deceleration torque, then vehicle enters low speed electric-only mode.
6. hybrid system control method according to claim 5, which is characterized in that the electric-only mode includes the One motor and the second motor are in the first electric-only mode of motoring condition, and it is second pure to be in motoring condition for only the first motor Electric model and only the second motor are in the third electric-only mode of motoring condition；The first motor Maximum Power Output P1Less than the second motor Maximum Power Output P2, P2＞ P1；
The high speed electric-only mode includes the first electric-only mode and high speed third electric-only mode at a high speed；
The low speed electric-only mode includes the first electric-only mode of low speed and low speed third electric-only mode.
7. hybrid system control method according to claim 6, which is characterized in that judge that vehicle is in described first The criterion of electric-only mode includes：
1)PDemand≤P1+P2, V≤VPure electricity H；
2)PDemand＞ P2；Or：PDemand≤P1And synthesis motor drive efficiency is best during in the first electric-only mode；Or：P1＜ PDemand＜ P2, and in the first electric-only mode when synthesis motor drive efficiency it is best；
Wherein, criterion 1), 2) for mutually with relationship, PDemandFor vehicle demand power；VPure electricity HHighest for vehicle under electric-only mode Speed.
8. hybrid system control method according to claim 6, which is characterized in that judge that vehicle is in described second The criterion of electric-only mode includes：
3)PDemand≤P1+P2, V≤VPure electricity H, PDemand≤P1, synthesis motor driven systems efficiency is best during in the second electric-only mode；
Wherein, PDemandFor vehicle demand power；VPure electricity HMax. speed for vehicle under electric-only mode.
9. hybrid system control method according to claim 6, which is characterized in that judge that vehicle is in the third The criterion of electric-only mode includes：
1)PDemand≤P1+P2, V≤VPure electricity H；
4)PDemand≤P1And power is not optimal during in first, second electric-only mode；Or：P1＜ PDemand＜ P2, and be in It is not that comprehensive motor drive efficiency is best during the first electric-only mode；
Wherein, criterion 1), 4) for mutually with relationship, PDemandFor vehicle demand power；VPure electricity HHighest for vehicle under electric-only mode Speed.
10. hybrid system control method according to claim 5, which is characterized in that the vehicle is in pure electric vehicle The criterion of pattern includes power battery SOC ＞ SOCL, wherein SOCLSOC threshold for electric-only mode.
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