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CN108238036A - Hybrid vehicle - Google Patents

Hybrid vehicle Download PDF

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Publication number
CN108238036A
CN108238036A CN201711213208.1A CN201711213208A CN108238036A CN 108238036 A CN108238036 A CN 108238036A CN 201711213208 A CN201711213208 A CN 201711213208A CN 108238036 A CN108238036 A CN 108238036A
Authority
CN
China
Prior art keywords
mentioned
internal combustion
engine
state
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711213208.1A
Other languages
Chinese (zh)
Other versions
CN108238036B (en
Inventor
曾布川靖
千速健太
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzuki Motor Corp filed Critical Suzuki Motor Corp
Publication of CN108238036A publication Critical patent/CN108238036A/en
Application granted granted Critical
Publication of CN108238036B publication Critical patent/CN108238036B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • 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
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • 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
    • 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
    • B60W20/15—Control strategies specially adapted for achieving a particular effect
    • 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
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/006—Starting of engines by means of electric motors using a plurality of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0844—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop with means for restarting the engine directly after an engine stop request, e.g. caused by change of driver mind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/10—Parallel operation of DC sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/80—Time limits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W2710/00—Output or target parameters relating to a particular sub-units
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    • B60W2710/0616—Position of fuel or air injector
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W2710/00—Output or target parameters relating to a particular sub-units
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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    • F02D41/04—Introducing corrections for particular operating conditions
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    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/20—Control related aspects of engine starting characterised by the control method
    • F02N2300/2002—Control related aspects of engine starting characterised by the control method using different starting modes, methods, or actuators depending on circumstances, e.g. engine temperature or component wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N99/00—Subject matter not provided for in other groups of this subclass
    • F02N99/002—Starting combustion engines by ignition means
    • F02N99/006—Providing a combustible mixture inside the cylinder
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • 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
    • 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
    • Y02T10/64—Electric machine technologies in electromobility
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
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    • Y02T10/72—Electric energy management in electromobility

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Abstract

It provides even if the hybrid vehicle that can be prevented vehicle from violating the wish of driver in the case of the cut-out that annular component has occurred and stop.In hybrid vehicle, ECU stops the operating of engine and implements to be travelled by the EV that the power of ISG travels, and in EV when driving, when the rotary speed of engine drops to below threshold value N1, the driving and fuel injection of implementing starter motor start engine.The rotary speed of threshold value N1 is higher than the rotary speed of halted state.

Description

混合动力车辆hybrid vehicle

技术领域technical field

本发明涉及混合动力车辆。The present invention relates to hybrid vehicles.

背景技术Background technique

在现有的混合动力车辆中，已知专利文献1中记载的车辆。专利文献1中记载的混合动力车辆具备异常判断装置，上述异常判断装置在尽管电动发电机控制装置发出了使电动发电机启动的信号但是由发动机转速检测装置检测出的发动机的转速是规定值以下且未由电动机异常检测装置检测出电动发电机的异常的情况下，判断为动力传递单元异常。另外，专利文献1中记载的混合动力车辆具备启动机启动装置，上述启动机启动装置在由异常判断装置判断为动力传递单元异常的情况下，为了使发动机再启动而将启动机启动。Among conventional hybrid vehicles, a vehicle described in Patent Document 1 is known. The hybrid vehicle described in Patent Document 1 is provided with an abnormality judging device that detects that the rotational speed of the engine by the engine rotational speed detection device is below a predetermined value even though the motor generator control device has issued a signal to start the motor generator. And when the abnormality of the motor generator is not detected by the motor abnormality detection device, it is determined that the power transmission unit is abnormal. In addition, the hybrid vehicle described in Patent Document 1 includes a starter activating device for activating the starter to restart the engine when the abnormality determining device determines that the power transmission unit is abnormal.

现有技术文献prior art literature

专利文献patent documents

专利文献1：特开2004-124914号公报Patent Document 1: JP-A-2004-124914

发明内容Contents of the invention

发明要解决的问题The problem to be solved by the invention

但是，专利文献1中记载的车辆在混合动力车辆使用电动发电机的动力行驶时发生了动力传递单元的异常的情况下，无法判断出该异常。因此，专利文献1中记载的车辆在发生了动力传递单元的异常的情况下，车辆有可能违背驾驶员的意愿而停止。However, in the vehicle described in Patent Document 1, when an abnormality occurs in the power transmission unit while the hybrid vehicle is running using the power of the motor generator, the abnormality cannot be determined. Therefore, in the vehicle described in Patent Document 1, when an abnormality occurs in the power transmission unit, the vehicle may stop against the driver's will.

本发明是着眼于上述那样的问题而完成的，其目的在于提供即使在发生了环状构件的切断的情况下也能防止车辆违背驾驶员的意愿而停止的混合动力车辆。The present invention has been made with the above problems in mind, and an object of the present invention is to provide a hybrid vehicle that prevents the vehicle from stopping against the driver's will even when the ring member is severed.

用于解决问题的方案solutions to problems

本发明的混合动力车辆具备：内燃机；电动机，其由电力驱动；启动机，其启动上述内燃机；以及旋转速度检测部，其检测上述内燃机的旋转速度，上述电动机与上述内燃机通过具有环状构件的柔性传动机构连结并能够相互传递动力，当上述电动机旋转时，上述内燃机被上述电动机带动旋转，上述混合动力车辆的特征在于，具备控制上述内燃机、上述电动机和上述启动机的控制部，上述控制部停止上述内燃机的运转且实施由上述电动机的动力行驶的EV行驶，在上述EV行驶时，当上述内燃机的旋转速度下降到第1阈值以下时，实施上述启动机的驱动和燃料喷射启动上述内燃机，上述第1阈值的旋转速度高于停止状态的旋转速度。The hybrid vehicle of the present invention includes: an internal combustion engine; an electric motor driven by electric power; a starter that starts the internal combustion engine; and a rotation speed detection unit that detects the rotation speed of the internal combustion engine. The flexible transmission mechanism is connected and can transmit power to each other. When the electric motor rotates, the internal combustion engine is driven to rotate by the electric motor. The hybrid vehicle is characterized in that it has a control unit that controls the internal combustion engine, the electric motor, and the starter. The control unit Stopping the operation of the internal combustion engine and performing EV running with power from the electric motor, during the EV running, when the rotational speed of the internal combustion engine falls below a first threshold value, driving the starter and fuel injection to start the internal combustion engine, The rotation speed of the above-mentioned first threshold value is higher than the rotation speed in the stop state.

发明效果Invention effect

这样，根据上述的本发明，即使在发生了环状构件的切断的情况下，也能防止车辆违背驾驶员的意愿而停止。As described above, according to the present invention described above, even when the annular member is cut, the vehicle can be prevented from stopping against the driver's will.

附图说明Description of drawings

图1是本发明的一实施例的混合动力车辆的构成图。FIG. 1 is a configuration diagram of a hybrid vehicle according to an embodiment of the present invention.

图2-1是表示本发明的一实施例的混合动力车辆的切换部的、从ISG向铅电池提供电力并从锂电池向锂电池负载提供电力的第1状态的图。2-1 is a diagram showing a first state in which power is supplied from the ISG to a lead battery and from a lithium battery to a lithium battery load in a switching unit of a hybrid vehicle according to an embodiment of the present invention.

图2-2是表示本发明的一实施例的混合动力车辆的切换部的、从锂电池向ISG提供电力并从铅电池向锂电池负载提供电力的第2状态的图。2-2 is a diagram showing a second state in which electric power is supplied from a lithium battery to an ISG and electric power is supplied from a lead battery to a lithium battery load in a switching unit of a hybrid vehicle according to an embodiment of the present invention.

图3是说明本发明的一实施例的混合动力车辆的ECU的动作的流程图。FIG. 3 is a flowchart illustrating the operation of the ECU of the hybrid vehicle according to the embodiment of the present invention.

附图标记说明Explanation of reference signs

10 混合动力车辆10 Hybrid Vehicles

20 发动机(内燃机)20 engine (internal combustion engine)

21 曲轴带轮(柔性传动机构)21 crankshaft pulley (flexible transmission mechanism)

27 曲柄角传感器(旋转速度检测部)27 Crank angle sensor (rotation speed detection unit)

40 ISG(电动机)40 ISG (motor)

42 带(环状构件、柔性传动机构)42 belt (ring member, flexible transmission mechanism)

41 带轮(柔性传动机构)41 pulley (flexible transmission mechanism)

50 ECU(控制部)50 ECU (control unit)

60 切换部60 switch part

71 铅电池(第1电源)71 lead battery (1st power supply)

72 锂电池(第2电源)72 Lithium battery (second power supply)

具体实施方式Detailed ways

本发明的一实施方式的混合动力车辆具备：内燃机；电动机，其由电力驱动；启动机，其启动内燃机；以及旋转速度检测部，其检测内燃机的旋转速度，电动机与内燃机通过具有环状构件的柔性传动机构连结并能够相互传递动力，当电动机旋转时，内燃机被电动机带动旋转，上述混合动力车辆的特征在于，具备控制内燃机、电动机和启动机的控制部，控制部停止内燃机的运转且实施由电动机的动力行驶的EV行驶，在EV行驶时，当内燃机的旋转速度下降到第1阈值以下时，实施启动机的驱动和燃料喷射启动内燃机，第1阈值的旋转速度高于停止状态的旋转速度。由此，本发明的一实施方式的混合动力车辆即使在发生了环状构件的切断的情况下，也能防止车辆违背驾驶员的意愿而停止。A hybrid vehicle according to an embodiment of the present invention includes: an internal combustion engine; an electric motor driven by electricity; a starter that starts the internal combustion engine; and a rotation speed detection unit that detects the rotation speed of the internal combustion engine. The flexible transmission mechanism is connected and can transmit power to each other. When the electric motor rotates, the internal combustion engine is driven to rotate by the electric motor. The above-mentioned hybrid vehicle is characterized in that it has a control unit that controls the internal combustion engine, the electric motor and the starter. The control unit stops the operation of the internal combustion engine and implements In the case of EV running with electric motor power, when the rotation speed of the internal combustion engine falls below the first threshold during EV running, the starter is driven and the fuel injection is performed to start the internal combustion engine, and the rotation speed of the first threshold is higher than the rotation speed of the stopped state . Accordingly, in the hybrid vehicle according to the embodiment of the present invention, even when the annular member is cut, the vehicle can be prevented from stopping against the driver's will.

实施例Example

以下，使用附图说明本发明的一实施例的混合动力车辆。图1至图3是说明本发明的一实施例的混合动力车辆的图。Hereinafter, a hybrid vehicle according to an embodiment of the present invention will be described using the drawings. 1 to 3 are diagrams illustrating a hybrid vehicle according to an embodiment of the present invention.

如图1所示，混合动力车辆10包括：发动机20、变速器30、车轮12以及综合地控制混合动力车辆10的ECU(Electronic Control Unit：电子控制单元)50。本实施例的发动机20构成本发明的内燃机。本实施例的ECU50构成本发明的控制部。As shown in FIG. 1 , a hybrid vehicle 10 includes an engine 20 , a transmission 30 , wheels 12 , and an ECU (Electronic Control Unit: Electronic Control Unit) 50 that comprehensively controls the hybrid vehicle 10 . The engine 20 of this embodiment constitutes the internal combustion engine of the present invention. The ECU 50 of this embodiment constitutes the control unit of the present invention.

在发动机20中形成有多个气缸。在本实施例中，发动机20构成为对各气缸进行包括进气冲程、压缩冲程、膨胀冲程和排气冲程的一连串的4个冲程。在发动机20设有向未图示的燃烧室导入空气的进气管22。A plurality of cylinders are formed in the engine 20 . In the present embodiment, the engine 20 is configured to perform a series of four strokes including an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke for each cylinder. The engine 20 is provided with an intake pipe 22 that introduces air into a combustion chamber (not shown).

在进气管22设有节流阀23，节流阀23调整经过进气管22的空气的量(进气量)。节流阀23包括通过未图示的电动机打开关闭的电控节流阀。节流阀23电连接到ECU50，由ECU50控制其节流阀开度。The intake pipe 22 is provided with a throttle valve 23 , and the throttle valve 23 adjusts the amount of air passing through the intake pipe 22 (intake amount). The throttle valve 23 includes an electronically controlled throttle valve that is opened and closed by an electric motor (not shown). The throttle valve 23 is electrically connected to the ECU 50 , and the throttle opening thereof is controlled by the ECU 50 .

在发动机20中按每一气缸设有：喷射器24，其通过未图示的进气口向燃烧室喷射燃料；以及火花塞25，其对燃烧室的混合气体进行点火。喷射器24和火花塞25电连接到ECU50。喷射器24的燃料喷射量和燃料喷射正时、火花塞25的点火正时和放电量由ECU50控制。The engine 20 is provided for each cylinder with an injector 24 that injects fuel into a combustion chamber through an intake port (not shown), and an ignition plug 25 that ignites an air-fuel mixture in the combustion chamber. The injector 24 and the spark plug 25 are electrically connected to the ECU 50 . The fuel injection amount and fuel injection timing of the injector 24 , and the ignition timing and discharge amount of the spark plug 25 are controlled by the ECU 50 .

在发动机20设有曲柄角传感器27，该曲柄角传感器27基于曲轴20A的旋转位置检测发动机转速，将检测信号发送到ECU50。曲柄角传感器27构成本发明的旋转速度检测部。The engine 20 is provided with a crank angle sensor 27 that detects the engine speed based on the rotational position of the crankshaft 20A and sends a detection signal to the ECU 50 . The crank angle sensor 27 constitutes the rotational speed detection unit of the present invention.

变速器30将从发动机20传递的旋转进行变速，通过驱动轴11驱动车轮12。变速器30具备未图示的液力变矩器、变速机构以及差动机构。The transmission 30 changes the speed of the rotation transmitted from the engine 20 and drives the wheels 12 via the drive shaft 11 . The transmission 30 includes a torque converter, a transmission mechanism, and a differential mechanism (not shown).

液力变矩器将从发动机20传递的旋转通过工作流体的作用转换为转矩从而进行转矩的增幅。在液力变矩器设有未图示的锁止离合器。当锁止离合器释放时，在发动机20与变速机构之间动力通过工作流体相互传递。当锁止离合器接合时，在发动机20与变速机构之间动力通过锁止离合器直接传递。The torque converter converts the rotation transmitted from the engine 20 into torque through the action of the working fluid to amplify the torque. A lock-up clutch (not shown) is provided on the torque converter. When the lock-up clutch is released, power is mutually transmitted between the engine 20 and the transmission mechanism through the working fluid. When the lock-up clutch is engaged, power is directly transmitted between the engine 20 and the transmission mechanism through the lock-up clutch.

变速机构包括CVT(Continuously Variable Transmission：无级变速器)，通过缠绕有金属带的1组带轮无级地自动进行变速。变速器30的变速比的变更和锁止离合器的接合或释放由ECU50来控制。The speed change mechanism includes a CVT (Continuously Variable Transmission: Continuously Variable Transmission), and the speed is automatically and continuously changed by a set of pulleys around which a metal belt is wound. The change of the gear ratio of the transmission 30 and the engagement or release of the lockup clutch are controlled by the ECU 50 .

此外，变速机构也可以是使用行星齿轮机构阶段性地进行变速的自动变速器(所谓的步进AT)。差动机构与左右的驱动轴11连结，将由变速机构变速后的动力传递到左右的驱动轴11而使其能差动旋转。In addition, the speed change mechanism may be an automatic transmission (so-called stepping AT) that changes speed in stages using a planetary gear mechanism. The differential mechanism is connected to the left and right drive shafts 11 , and transmits power shifted by the speed change mechanism to the left and right drive shafts 11 to enable differential rotation.

另外，变速器30也可以是AMT(Automated Manual Transmission：手自一体变速器)。AMT是对包括平行轴齿轮机构的手动变速器追加致动器而自动地进行变速的自动变速器。在变速器30是AMT的情况下，在变速器30设有干式单片离合器来取代液力变矩器。In addition, the transmission 30 may be an AMT (Automated Manual Transmission: automatic manual transmission). The AMT is an automatic transmission that automatically shifts gears by adding an actuator to a manual transmission including a parallel shaft gear mechanism. When the transmission 30 is an AMT, a dry single-plate clutch is provided in the transmission 30 instead of a torque converter.

另外，变速器30也可以是DCT(Dual Clutch Transmission：双离合器变速器)。DCT是有级自动变速器的一种，具有2个系统的齿轮，其各自具有离合器。In addition, the transmission 30 may be a DCT (Dual Clutch Transmission: dual clutch transmission). The DCT is a type of stepped automatic transmission and has two sets of gears, each of which has a clutch.

混合动力车辆10具备加速器开度传感器13A，该加速器开度传感器13A检测加速踏板13的操作量(以下简称为“加速器开度”)，将检测信号发送到ECU50。Hybrid vehicle 10 includes an accelerator opening sensor 13A that detects an operation amount of accelerator pedal 13 (hereinafter simply referred to as “accelerator opening”) and sends a detection signal to ECU 50 .

混合动力车辆10具备制动行程传感器14A，该制动行程传感器14A检测制动踏板14的操作量(以下简称为“制动行程”)，将检测信号发送到ECU50。Hybrid vehicle 10 includes a brake stroke sensor 14A that detects an operation amount of brake pedal 14 (hereinafter simply referred to as “brake stroke”) and sends a detection signal to ECU 50 .

混合动力车辆10具备车速传感器12A，该车速传感器12A检测基于车轮12的旋转速度的车速，将检测信号发送到ECU50。此外，在ECU50或其它控制器中，当运算各车轮12相对于车速的滑移率时，使用车速传感器12A的检测信号。Hybrid vehicle 10 includes a vehicle speed sensor 12A that detects a vehicle speed based on the rotation speed of wheels 12 and sends a detection signal to ECU 50 . In addition, in the ECU 50 or other controllers, the detection signal of the vehicle speed sensor 12A is used when calculating the slip rate of each wheel 12 with respect to the vehicle speed.

混合动力车辆10具备启动机26。启动机26具备未图示的电动机和固定于该电动机的旋转轴的小齿轮。另一方面，在发动机20的曲轴20A的一端部固定有圆盘状的驱动板，在该驱动板的外周部设有环形齿轮。启动机26根据ECU50的指令来驱动电动机，使小齿轮与环形齿轮啮合而使环形齿轮旋转，从而将发动机20启动。这样，启动机26通过包括小齿轮和环形齿轮的齿轮机构将发动机20启动。The hybrid vehicle 10 includes a starter 26 . The starter 26 includes an electric motor (not shown) and a pinion gear fixed to the rotating shaft of the electric motor. On the other hand, a disc-shaped drive plate is fixed to one end portion of the crankshaft 20A of the engine 20 , and a ring gear is provided on the outer peripheral portion of the drive plate. The starter 26 drives the electric motor according to a command from the ECU 50 , meshes the pinion gear with the ring gear, rotates the ring gear, and starts the engine 20 . Thus, starter 26 starts engine 20 through a gear mechanism including a pinion and a ring gear.

混合动力车辆10具备ISG(Integrated Starter Generator：集成启动发电机)40。ISG40是集成了启动发动机20的启动装置和产生电力的发电机的旋转电机。ISG40具有利用来自外部的动力进行发电的发电机的功能和通过被提供电力而产生动力的电动机的功能。ISG40构成本发明的电动机。Hybrid vehicle 10 includes ISG (Integrated Starter Generator: Integrated Starter Generator) 40 . The ISG 40 is a rotating electric machine that integrates a starter that starts the engine 20 and a generator that generates electric power. The ISG 40 has a function of a generator for generating power from external power and a function of a motor for generating power by being supplied with electric power. ISG40 constitutes the motor of the present invention.

ISG40通过包括带轮41、曲轴带轮21以及带42的柔性传动机构与发动机20连结，与发动机20之间相互进行动力传递。更具体地，ISG40具备旋转轴40A，在该旋转轴40A固定有带轮41。在发动机20的曲轴20A的另一端部固定有曲轴带轮21。作为环状构件的带42围绕曲轴带轮21和带轮41缠绕。此外，作为柔性传动机构，也可以使用链轮和链条，该情况下的环状构件是链条。The ISG 40 is connected to the engine 20 through a flexible transmission mechanism including a pulley 41 , a crank pulley 21 , and a belt 42 , and transmits power to and from the engine 20 . More specifically, the ISG 40 includes a rotating shaft 40A, and a pulley 41 is fixed to the rotating shaft 40A. A crank pulley 21 is fixed to the other end of the crankshaft 20A of the engine 20 . A belt 42 as an endless member is wound around the crankshaft pulley 21 and the pulley 41 . In addition, a sprocket and a chain may be used as the flexible transmission mechanism, and the ring-shaped member in this case is a chain.

ISG40通过作为电动机进行驱动，从而使曲轴20A旋转而将发动机20启动。在此，在本实施例的混合动力车辆10中，具备ISG40和启动机26作为发动机20的启动装置。启动机26主要用于基于司机的启动操作的发动机20的冷启动，ISG40主要用于从怠速停止进行的发动机20的再启动。ISG 40 is driven as a motor to rotate crankshaft 20A to start engine 20 . Here, in the hybrid vehicle 10 of the present embodiment, an ISG 40 and a starter 26 are provided as a starting device for the engine 20 . The starter 26 is mainly used for cold starting of the engine 20 by a driver's starting operation, and the ISG 40 is mainly used for restarting the engine 20 from an idle stop.

虽然ISG40也能进行发动机20的冷启动，但是混合动力车辆10为了进行发动机20的可靠的冷启动而具备启动机26。例如，有可能会有在寒冷地区的冬季等由于润滑油的粘度增加而通过ISG40的动力难以进行发动机20的冷启动的情况或者ISG40发生故障的情况。考虑到这种情况，混合动力车辆10具备ISG40和启动机26这两者作为启动装置。The ISG 40 is also capable of cold starting the engine 20 , but the hybrid vehicle 10 includes a starter 26 for reliably cold starting the engine 20 . For example, in winter in a cold region, it may be difficult to cold start engine 20 by the power of ISG 40 or ISG 40 may malfunction due to the increase in viscosity of lubricating oil. In consideration of this situation, hybrid vehicle 10 includes both ISG 40 and starter 26 as starter devices.

ISG40的动力运转所产生的动力通过发动机20的曲轴20A、变速器30、驱动轴11传递到车轮1。Motive power generated by power running of ISG 40 is transmitted to wheels 1 through crankshaft 20A of engine 20 , transmission 30 , and drive shaft 11 .

另外，车轮12的旋转通过驱动轴11、变速器30、发动机20的曲轴20A传递到ISG40，用于ISG40的再生(发电)。In addition, the rotation of the wheels 12 is transmitted to the ISG 40 through the drive shaft 11 , the transmission 30 , and the crankshaft 20A of the engine 20 , and is used for regeneration (power generation) of the ISG 40 .

因而，混合动力车辆10不仅能实现仅利用发动机20的动力(发动机转矩)的行驶(以下也称为发动机行驶)，还能实现利用ISG40的动力(电动机转矩)来辅助发动机20的行驶。Therefore, the hybrid vehicle 10 can not only run using only the power (engine torque) of the engine 20 (hereinafter also referred to as engine running), but also can realize running using the power (motor torque) of the ISG 40 to assist the engine 20 .

而且，混合动力车辆10能在将向发动机20的燃料喷射设为不喷射而使发动机20的运转停止的状态下仅利用ISG40的动力进行行驶(以下也称为EV行驶)。此外，在EV行驶中，发动机20被ISG40带动旋转。Further, the hybrid vehicle 10 can travel by using only the power of the ISG 40 (hereinafter also referred to as EV travel) in a state where the fuel injection to the engine 20 is not injected and the operation of the engine 20 is stopped. Also, during EV running, engine 20 is rotated by ISG 40 .

这样，混合动力车辆10构成能使用发动机20的动力和ISG40的动力中的至少一种动力行驶的并行混合动力系统。In this way, hybrid vehicle 10 constitutes a parallel hybrid system capable of running using at least one of the power of engine 20 and the power of ISG 40 .

混合动力车辆10具备作为第1电源的铅电池71和作为第2电源的锂电池72。铅电池71和锂电池72包括能充电的二次电池。铅电池71和锂电池72以产生约12V的输出电压的方式设定单体电池的个数等。The hybrid vehicle 10 includes a lead battery 71 as a first power source and a lithium battery 72 as a second power source. The lead battery 71 and the lithium battery 72 include rechargeable secondary batteries. The lead battery 71 and the lithium battery 72 are set so as to generate an output voltage of about 12V, such as the number of single cells.

铅电池71包括在电极中使用了铅的铅蓄电池。锂电池72包括通过使锂离子在正极与负极之间往返而进行放电和充电的锂离子二次电池。The lead battery 71 includes a lead storage battery using lead as an electrode. The lithium battery 72 includes a lithium ion secondary battery that is discharged and charged by passing lithium ions back and forth between a positive electrode and a negative electrode.

铅电池71与锂电池72相比具有短时间内能释放更大电流的特性。The lead battery 71 has a characteristic of being able to discharge a larger current in a short time than the lithium battery 72 .

锂电池72与铅电池71相比具有能够进行更多次数的反复充放电的特性。另外，锂电池72与铅电池71相比具有能以短时间充电的特性。另外，锂电池72与铅电池71相比具有高输出且高能量密度的特性。The lithium battery 72 has a characteristic of being able to perform a greater number of repetitions of charge and discharge than the lead battery 71 . In addition, the lithium battery 72 has a characteristic that it can be charged in a shorter time than the lead battery 71 . In addition, the lithium battery 72 has characteristics of higher output and higher energy density than the lead battery 71 .

在铅电池71设有充电状态检测部71A，该充电状态检测部71A检测铅电池71的端子间电压、周边温度或输入输出电流，将检测信号输出到ECU50。ECU50通过铅电池71的端子间电压、周边温度或输入输出电流来检测充电状态。Lead battery 71 is provided with charge state detection unit 71A that detects the voltage between terminals of lead battery 71 , the surrounding temperature, or the input/output current, and outputs a detection signal to ECU 50 . The ECU 50 detects the state of charge from the voltage between terminals of the lead battery 71 , the surrounding temperature, or the input/output current.

在锂电池72设有充电状态检测部72A，该充电状态检测部72A检测锂电池72的端子间电压、周边温度或输入输出电流，将检测信号输出到ECU50。ECU50通过锂电池72的端子间电压、周边温度或输入输出电流来检测充电状态。铅电池71和锂电池72的充电状态(SOC)由ECU50管理。The lithium battery 72 is provided with a charge state detection unit 72A that detects the voltage between terminals of the lithium battery 72 , the surrounding temperature, or the input/output current, and outputs a detection signal to the ECU 50 . The ECU 50 detects the state of charge from the voltage between terminals of the lithium battery 72 , the surrounding temperature, or the input/output current. The states of charge (SOC) of the lead battery 71 and the lithium battery 72 are managed by the ECU 50 .

混合动力车辆10具备铅电池负载16和锂电池负载17作为电负载。The hybrid vehicle 10 includes a lead battery load 16 and a lithium battery load 17 as electrical loads.

铅电池负载16是主要从铅电池71被提供电力的电负载。铅电池负载16包括防止车辆的侧滑的稳定性控制装置、对转向轮的操作力进行电辅助的未图示的电动助力转向控制装置、前照灯以及吹气风扇等。另外，铅电池负载16例如包括未图示的刮水器和对未图示的散热器输送冷风的电动冷却风扇。铅电池负载16与锂电池负载17相比是较多地消耗电力的电负载或被一时使用的电负载。The lead battery load 16 is an electric load supplied with electric power mainly from the lead battery 71 . The lead battery load 16 includes a stability control device that prevents the vehicle from skidding, an electric power steering control device (not shown) that electrically assists the operating force of the steering wheel, a headlight, an air blower fan, and the like. In addition, lead battery load 16 includes, for example, a wiper (not shown) and an electric cooling fan that sends cool air to a radiator (not shown). The lead battery load 16 is an electrical load that consumes more power than the lithium battery load 17 or an electrical load that is used temporarily.

锂电池负载17是主要从锂电池72被提供电力的电负载。锂电池负载17还包括未图示的仪表板的灯类和仪表类以及汽车导航系统。锂电池负载17是与铅电池负载16相比耗电量较少的电负载。The lithium battery load 17 is an electric load supplied with electric power mainly from the lithium battery 72 . The lithium battery load 17 also includes lamps and meters of the instrument panel, which are not shown, and a car navigation system. The lithium battery load 17 is an electrical load that consumes less power than the lead battery load 16 .

混合动力车辆10具备切换部60，切换部60切换铅电池71、锂电池72、铅电池负载16、锂电池负载17以及ISG40之间的电力供给状态。切换部60包括机械继电器或半导体继电器(也称为SSR：Solid State Relay；固态继电器)等，由ECU50控制。Hybrid vehicle 10 includes switching unit 60 that switches the power supply state among lead battery 71 , lithium battery 72 , lead battery load 16 , lithium battery load 17 , and ISG 40 . The switching unit 60 includes a mechanical relay or a semiconductor relay (also referred to as SSR: Solid State Relay; solid state relay), etc., and is controlled by the ECU 50 .

切换部60连接着电缆61、62、63、64。电缆61将切换部60、铅电池71、铅电池负载16以及启动机26并联连接。电缆62将切换部60与锂电池连接。电缆63将切换部60与锂电池负载17连接。电缆64将切换部60与ISG40连接。Cables 61 , 62 , 63 , and 64 are connected to the switching unit 60 . Cable 61 connects switching unit 60 , lead battery 71 , lead battery load 16 , and starter 26 in parallel. The cable 62 connects the switching unit 60 and the lithium battery. Cable 63 connects switching unit 60 and lithium battery load 17 . Cable 64 connects switching unit 60 and ISG 40 .

因而，铅电池负载16和启动机26被常从铅电池71提供电力。另一方面，在本实施例中，以从锂电池72或铅电池71中的一方向锂电池负载17选择性地提供电力的方式切换电力供给状态。另外，以从锂电池72或铅电池71中的一方向ISG40选择性地提供电力的方式切换电力供给状态。Thus, lead battery load 16 and starter 26 are always powered from lead battery 71 . On the other hand, in the present embodiment, the power supply state is switched so that power is selectively supplied from either the lithium battery 72 or the lead battery 71 to the lithium battery load 17 . In addition, the power supply state is switched so that the ISG 40 is selectively supplied with power from either the lithium battery 72 or the lead battery 71 .

在图2-1和图2-2中，切换部60具有开关SW1、SW2、SW3、SW4。此外，开关SW1、SW2、SW3、SW4在闭合状态时形成连接状态，在断开状态时形成切断状态。In FIGS. 2-1 and 2-2 , the switching unit 60 has switches SW1 , SW2 , SW3 , and SW4 . In addition, the switches SW1 , SW2 , SW3 , and SW4 are in the connected state when they are in the closed state, and are in the disconnected state when they are in the open state.

开关SW1将电缆61与电缆64连接或切断。因而，开关SW1将铅电池71与ISG40连接或切断。The switch SW1 connects or disconnects the cable 61 and the cable 64 . Therefore, switch SW1 connects or disconnects lead battery 71 and ISG40.

开关SW2将电缆61与电缆63连接或切断。因而，开关SW2将铅电池71与锂电池负载17连接或切断。The switch SW2 connects or disconnects the cable 61 and the cable 63 . Thus, the switch SW2 connects or disconnects the lead battery 71 from the lithium battery load 17 .

开关SW3将电缆62与电缆64连接或切断。因而，开关SW3将锂电池72与ISG40连接或切断。The switch SW3 connects or disconnects the cable 62 and the cable 64 . Thus, switch SW3 connects or disconnects lithium battery 72 from ISG 40 .

开关SW4将电缆62与电缆63连接或切断。因而，开关SW4将锂电池72与锂电池负载17连接或切断。The switch SW4 connects or disconnects the cable 62 and the cable 63 . Thus, the switch SW4 connects or disconnects the lithium battery 72 from the lithium battery load 17 .

切换部60形成图2-1所示的第1状态，在该第1状态下，开关SW1、SW4闭合，开关SW2、SW3断开。当切换部60为第1状态时，从ISG40向铅电池71提供电力，从锂电池72向锂电池负载17提供电力。The switching unit 60 is in the first state shown in FIG. 2-1 , and in the first state, the switches SW1 and SW4 are closed and the switches SW2 and SW3 are open. When switching unit 60 is in the first state, electric power is supplied from ISG 40 to lead battery 71 , and electric power is supplied to lithium battery load 17 from lithium battery 72 .

另外，切换部60形成图2-2所示的第2状态，在该第2状态下，开关SW1、SW4断开，开关SW2、SW3闭合。当切换部60为第2状态时，从锂电池72向ISG40提供电力，从铅电池71向锂电池负载17提供电力。In addition, the switching unit 60 is in the second state shown in FIG. 2-2 , and in the second state, the switches SW1 and SW4 are turned off, and the switches SW2 and SW3 are turned on. When switching unit 60 is in the second state, electric power is supplied from lithium battery 72 to ISG 40 , and electric power is supplied to lithium battery load 17 from lead battery 71 .

ECU50包括具备CPU(Central Processing Unit：中央处理单元)、RAM(RandomAccess Memory：随机存取存储器)、ROM(Read Only Memory：只读存储器)、保存备份用数据等的闪存、输入端口以及输出端口的计算机单元。The ECU 50 includes a CPU (Central Processing Unit: Central Processing Unit), RAM (Random Access Memory: Random Access Memory), ROM (Read Only Memory: Read Only Memory), flash memory for storing backup data, etc., input ports, and output ports. computer unit.

在该计算机单元的ROM中保存有各种常数或各种映射等，并且保存有用于使该计算机单元作为ECU50发挥功能的程序。即，CPU以RAM为工作区域执行ROM所保存的程序，由此，这些计算机单元作为本实施例的ECU50发挥功能。Various constants, various maps, and the like are stored in the ROM of the computer unit, and programs for making the computer unit function as ECU 50 are stored. That is, the CPU executes the program stored in the ROM using the RAM as a work area, whereby these computer units function as the ECU 50 of the present embodiment.

ECU50的输入端口连接着包括上述的曲柄角传感器27、加速器开度传感器13A、制动行程传感器14A、车速传感器12A、充电状态检测部71A、72A在内的各种传感器类。在此，在本实施例中，发动机20与ISG40通过带42连结并能相互传递动力。ECU50通过曲柄角传感器27间接地检测ISG40的转速。Various sensors including the above-mentioned crank angle sensor 27 , accelerator opening sensor 13A, brake stroke sensor 14A, vehicle speed sensor 12A, and state-of-charge detectors 71A and 72A are connected to input ports of ECU 50 . Here, in this embodiment, the engine 20 and the ISG 40 are connected by a belt 42 so that power can be transmitted to each other. ECU 50 indirectly detects the rotational speed of ISG 40 through crank angle sensor 27 .

ECU50的输出端口连接着包括节流阀23、喷射器24、火花塞25、切换部60、ISG40和启动机26等各种装置类在内的各种控制对象类。ECU50基于从各种传感器类得到的信息来控制各种控制对象类。The output port of the ECU 50 is connected to various control objects including various devices such as the throttle valve 23 , the injector 24 , the spark plug 25 , the switching unit 60 , the ISG 40 , and the starter 26 . The ECU 50 controls various types of control objects based on information obtained from various types of sensors.

当规定的EV条件成立时，ECU50进行利用ISG40驱动混合动力车辆10的EV行驶。EV条件例如包括铅电池71和锂电池72的SOC大于规定值、加速器开度为“0”等。When predetermined EV conditions are satisfied, ECU 50 performs EV running in which ISG 40 drives hybrid vehicle 10 . The EV conditions include, for example, the SOC of the lead battery 71 and the lithium battery 72 are greater than a predetermined value, the accelerator opening is "0", and the like.

在EV行驶时，ECU50将切换部60设为图2-2所示的第2状态。在EV行驶时，ISG40使用锂电池72的电力进行驱动。During EV running, ECU 50 sets switching unit 60 to the second state shown in FIG. 2-2 . During EV running, ISG 40 is driven using electric power of lithium battery 72 .

在此，在EV行驶中带42断掉的情况下，ISG40的旋转无法传递到发动机20，因此混合动力车辆10会违背驾驶员的意愿而停车。Here, if the belt 42 is broken during EV running, the rotation of the ISG 40 cannot be transmitted to the engine 20, so the hybrid vehicle 10 stops against the driver's intention.

因此，在本实施例中，ECU50在EV行驶时监视发动机转速，并根据发动机转速与阈值N1、N2的比较结果来实施后述的动作，从而防止违背驾驶员的意愿的停车。Therefore, in this embodiment, the ECU 50 monitors the engine speed during EV running, and performs operations described later based on the comparison results of the engine speed and the thresholds N1 and N2 , thereby preventing parking against the driver's will.

在此，阈值N1的旋转速度高于停止状态的旋转速度。停止状态的旋转速度是指0rpm。阈值N1与本发明的第1阈值对应。在本实施例中将阈值N1设为200rpm。Here, the rotational speed of the threshold N1 is higher than the rotational speed of the stopped state. The rotational speed in the stopped state refers to 0 rpm. The threshold N1 corresponds to the first threshold of the present invention. In this embodiment, the threshold N1 is set to 200 rpm.

阈值N2设定为大于第1阈值N1。第2阈值的旋转速度为能够通过燃料喷射启动发动机20的旋转速度的下限值以上。阈值N2与本发明的第2阈值对应。在本实施例中将阈值N2设为600rpm。The threshold N2 is set to be larger than the first threshold N1. The rotational speed of the second threshold value is equal to or greater than the lower limit value of the rotational speed at which the engine 20 can be started by fuel injection. The threshold N2 corresponds to the second threshold of the present invention. In this embodiment, the threshold N2 is set to 600 rpm.

在EV行驶时当发动机转速下降到阈值N2(600rpm)以下时，ECU50使切换部60从第2状态向第1状态转移。When the engine speed falls below the threshold value N2 (600 rpm) during EV running, the ECU 50 shifts the switching unit 60 from the second state to the first state.

ECU50在切换部60从第2状态转移到第1状态且发动机20的旋转速度增加的情况下，通过燃料喷射将发动机20启动，实施利用发动机20的动力行驶的发动机行驶。When the switching unit 60 shifts from the second state to the first state and the rotation speed of the engine 20 increases, the ECU 50 starts the engine 20 by fuel injection, and performs engine running using the power of the engine 20 .

在EV行驶时当发动机转速下降到N1(200rpm)以下时，ECU50实施启动机26的驱动和燃料喷射而将发动机20启动。When the engine speed drops below N1 (200 rpm) during EV running, the ECU 50 starts the engine 20 by driving the starter 26 and injecting fuel.

参照图3所示的流程图说明如上所示构成的混合动力车辆10的ECU50的防止停车动作。The parking prevention operation of ECU 50 of hybrid vehicle 10 configured as above will be described with reference to the flowchart shown in FIG. 3 .

在图3中，ECU50在步骤S1中判断在EV行驶中发动机转速是否下降到阈值N2以下。ECU50反复进行步骤S1直至判断为发动机转速下降到阈值N2以下。In FIG. 3 , ECU 50 determines in step S1 whether or not the engine speed has dropped below a threshold value N2 during EV running. The ECU 50 repeats step S1 until it is determined that the engine speed has fallen below the threshold value N2.

在步骤S1中发动机转速下降到阈值N2以下的情况下，ECU50在步骤S2中将向ISG40提供电力的电池从锂电池72切换为铅电池71。另外，ECU50在步骤S2中实施向发动机20的燃料喷射。When the engine speed falls below the threshold value N2 in step S1 , ECU 50 switches the battery that supplies electric power to ISG 40 from lithium battery 72 to lead battery 71 in step S2 . In addition, the ECU 50 executes fuel injection to the engine 20 in step S2.

在步骤S2中通过从铅电池71向ISG40提供电力而发动机转速上升了的情况下，ECU50判断为带42未断掉，而原因是锂电池72的SOC的输出降低等。In step S2 , when the engine rotation speed increases due to electric power supplied from the lead battery 71 to the ISG 40 , the ECU 50 determines that the belt 42 is not broken, and the cause is a decrease in the output of the SOC of the lithium battery 72 .

在步骤S2中通过实施燃料喷射而发动机转速上升了的情况下，ECU50实施发动机行驶。In step S2, when the engine rotation speed has increased due to fuel injection, the ECU 50 performs engine running.

在步骤S3中，ECU50判断发动机转速是否下降到阈值N1以下并经过了0.5秒。在发动机转速没有下降到阈值N1以下的情况下或者从下降到阈值N1以下起没有经过0.5秒的情况下，ECU50返回步骤S1。In step S3, the ECU 50 judges whether or not 0.5 seconds have elapsed since the engine speed has fallen below the threshold value N1. When the engine rotation speed has not fallen below the threshold value N1 or when 0.5 seconds have not elapsed since the engine speed has fallen below the threshold value N1 , the ECU 50 returns to step S1 .

在步骤S3中发动机转速下降到阈值N1以下并经过了0.5秒的情况下，ECU50在步骤S4中驱动启动机26而将发动机20启动。之后，ECU50实施发动机行驶。When 0.5 seconds have elapsed since the engine speed has fallen below the threshold value N1 in step S3 , ECU 50 drives starter 26 to start engine 20 in step S4 . Thereafter, the ECU 50 executes engine running.

如上所示，在本实施例的混合动力车辆10中，ECU50使发动机20的运转停止而实施利用ISG40的动力行驶的EV行驶，在EV行驶时，当发动机20的旋转速度下降到阈值N1以下时，实施启动机26的驱动和燃料喷射而将发动机20启动。阈值N1的旋转速度高于停止状态的旋转速度。As described above, in the hybrid vehicle 10 of this embodiment, the ECU 50 stops the operation of the engine 20 to perform EV running using the power of the ISG 40 , and when the rotation speed of the engine 20 falls below the threshold value N1 during the EV running, , the engine 20 is started by driving the starter 26 and injecting fuel. The rotation speed of the threshold N1 is higher than that of the stop state.

由此，在EV行驶时发动机20的旋转速度下降到阈值N1以下的情况下，能通过启动机26的驱动和燃料喷射的实施而将发动机20启动。Accordingly, when the rotational speed of the engine 20 falls below the threshold value N1 during EV running, the engine 20 can be started by driving the starter 26 and performing fuel injection.

因此，能避免发动机20下降到作为停止状态的旋转速度的0rpm而发生发动机失速，能使用发动机20的驱动转矩继续行驶。Therefore, it is possible to prevent the engine 20 from decelerating to 0 rpm, which is the rotation speed in a stopped state, from causing an engine stall, and to continue running using the driving torque of the engine 20 .

其结果是，即使在发生了环状构件的切断的情况下，也能防止车辆违背驾驶员的意愿而停止。As a result, even if the annular member is cut, the vehicle can be prevented from stopping against the driver's will.

另外，在本实施例的混合动力车辆10中，当进行切换部60是第2状态的状态下的EV行驶时，ECU50在发动机20的旋转速度下降到大于阈值N1的阈值N2以下时，使切换部60从第2状态向第1状态转移。In addition, in the hybrid vehicle 10 of the present embodiment, when EV running is performed with the switching unit 60 in the second state, the ECU 50 switches the rotation speed of the engine 20 below the threshold N2 that is higher than the threshold N1. The unit 60 transitions from the second state to the first state.

由此，在通过使切换部60向第1状态转移而发动机20的旋转速度没有上升的情况下，能确认其原因是带42的切断。另外，在通过使切换部60向第1状态转移而发动机20的旋转速度上升了的情况下，能确认其原因是锂电池72的SOC降低。Accordingly, when the rotational speed of the engine 20 does not increase by shifting the switching unit 60 to the first state, it can be confirmed that the cause is the cutting of the belt 42 . In addition, when the rotational speed of the engine 20 increases by shifting the switching unit 60 to the first state, it can be confirmed that the cause is a decrease in the SOC of the lithium battery 72 .

其结果是，能确认发动机20的旋转速度的下降是否是由带42的切断造成的。As a result, it can be confirmed whether or not the decrease in the rotational speed of the engine 20 is caused by the cutting of the belt 42 .

另外，在本实施例的混合动力车辆10中，ECU50在切换部60从第2状态转移到第1状态且发动机20的旋转速度增加的情况下，通过燃料喷射将发动机20启动，实施利用发动机20的动力行驶的发动机行驶。In addition, in the hybrid vehicle 10 of the present embodiment, when the switching unit 60 shifts from the second state to the first state and the rotation speed of the engine 20 increases, the ECU 50 starts the engine 20 by fuel injection, and implements the operation of using the engine 20. The power to drive the engine to drive.

由此，在切换部60从第2状态转移到第1状态且发动机20的旋转速度增加的情况下，由于带42并未被切断，因此能通过实施发动机行驶而由ISG40产生电力。因此，能防止作为电源的铅电池和锂电池72的过放电。Thus, when switching unit 60 shifts from the second state to the first state and the rotation speed of engine 20 increases, since belt 42 is not cut, electric power can be generated by ISG 40 by performing engine running. Therefore, overdischarge of the lead battery and the lithium battery 72 serving as power sources can be prevented.

另外，在本实施例的混合动力车辆10中，铅电池71与锂电池72相比具有短时间内能释放更大电流的特性，锂电池72与铅电池71相比具有能够进行更多次数的反复充放电的特性。In addition, in the hybrid vehicle 10 of this embodiment, the lead battery 71 has the characteristic of being able to discharge a larger current in a short time than the lithium battery 72, and the lithium battery 72 has the characteristic of being able to discharge more times than the lead battery 71. The characteristics of repeated charge and discharge.

由此，铅电池71与锂电池72的特性相互不同，因此能根据情况形成合适的电力供给状态。Thereby, since the characteristics of the lead battery 71 and the lithium battery 72 are different from each other, an appropriate power supply state can be formed depending on the situation.

另外，在本实施例的混合动力车辆10中，阈值N2的旋转速度为能够通过燃料喷射启动发动机20的旋转速度的下限值以上。In addition, in the hybrid vehicle 10 of the present embodiment, the rotational speed of the threshold value N2 is equal to or greater than the lower limit value of the rotational speed at which the engine 20 can be started by fuel injection.

由此，在EV行驶时发动机20的旋转速度下降到阈值N2以下的情况下，能通过燃料喷射将发动机20启动。因此，能不需要司机为了将已停止旋转的发动机20再启动而通过点火钥匙等进行启动操作。Accordingly, when the rotational speed of the engine 20 falls below the threshold value N2 during EV running, the engine 20 can be started by fuel injection. Therefore, it is possible to eliminate the need for the driver to perform a start operation with an ignition key or the like in order to restart the engine 20 whose rotation has stopped.

虽然公开了本发明的实施例，但是显然本领域技术人员能不脱离本发明的范围地加以变更。意愿将所有的这种修改和等同物包含于权利要求书中。Although the embodiment of the present invention was disclosed, it is obvious that changes can be made without departing from the scope of the present invention by those skilled in the art. It is intended to cover all such modifications and equivalents within the claims.

Claims (5)

1. a kind of hybrid vehicle, has：Internal combustion engine；Motor, by electric drive；Starter motor starts above-mentioned internal combustion Machine；And rotary speed test section, the rotary speed of the above-mentioned internal combustion engine of detection,
Above-mentioned motor is linked and can mutually be transmitted dynamic by the flexible drive mechanism with annular component with above-mentioned internal combustion engine Power, when above-mentioned motor rotates, above-mentioned internal combustion engine is driven by above-mentioned motor to be rotated, and the feature of above-mentioned hybrid vehicle exists In,
Have the control unit for controlling above-mentioned internal combustion engine, above-mentioned motor and above-mentioned starter motor,
Above-mentioned control unit stops the operating of above-mentioned internal combustion engine and implements to be travelled by the EV that the power of above-mentioned motor travels,
In above-mentioned EV when driving, when the rotary speed of above-mentioned internal combustion engine drops to below the 1st threshold value, implement above-mentioned starter motor Driving and fuel injection start above-mentioned internal combustion engine,
The rotary speed of above-mentioned 1st threshold value is higher than the rotary speed of halted state.
2. hybrid vehicle according to claim 1, which is characterized in that have：
1st power supply and the 2nd power supply；And
Switching part, switch power supply state between above-mentioned 1st power supply and above-mentioned motor and above-mentioned 2nd power supply and Power supply state between above-mentioned motor,
Above-mentioned switching part is formed：
From above-mentioned 1st power supply to the 1st state of above-mentioned powering electric motors；And
From above-mentioned 2nd power supply to the 2nd state of above-mentioned powering electric motors,
Above-mentioned control unit above-mentioned switching part for the above-mentioned EV in the state of above-mentioned 2nd state when driving, when above-mentioned internal combustion engine When rotary speed is dropped to below the 2nd threshold value more than above-mentioned 1st threshold value, above-mentioned switching part is made to be transferred to from above-mentioned 2nd state Above-mentioned 1st state.
3. hybrid vehicle according to claim 2, which is characterized in that
Above-mentioned control unit is transferred to above-mentioned 1st state and the rotation speed of above-mentioned internal combustion engine in above-mentioned switching part from above-mentioned 2nd state Spend it is increased in the case of,
Above-mentioned internal combustion engine is started by fuel injection, implements to be travelled by the engine of the power traveling of above-mentioned internal combustion engine.
4. hybrid vehicle according to claim 3, which is characterized in that
Above-mentioned 1st power supply has the characteristic of short time interior energy release more high current compared with above-mentioned 2nd power supply,
Above-mentioned 2nd power supply has the characteristic for the repeated charge that can carry out more numbers compared with above-mentioned 1st power supply.
5. the hybrid vehicle according to any one of claim 2 to claim 4, which is characterized in that
The rotary speed of above-mentioned 2nd threshold value be the lower limiting value for the rotary speed that can start above-mentioned internal combustion engine by fuel injection with On.
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