WO2013031491A1 - ハイブリッド車両の制御装置 - Google Patents
ハイブリッド車両の制御装置 Download PDFInfo
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- WO2013031491A1 WO2013031491A1 PCT/JP2012/070055 JP2012070055W WO2013031491A1 WO 2013031491 A1 WO2013031491 A1 WO 2013031491A1 JP 2012070055 W JP2012070055 W JP 2012070055W WO 2013031491 A1 WO2013031491 A1 WO 2013031491A1
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- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/448—Electrical distribution type
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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
- B60K6/442—Series-parallel switching type
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- 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
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- 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
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
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- 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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/082—Selecting or switching between different modes of propelling
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- 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
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- 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
- F02D29/06—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 electric generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
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- 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
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- 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
- B60W2540/215—Selection or confirmation of options
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- 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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- 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
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/946—Characterized by control of driveline clutch
Definitions
- the present invention relates to a control device for a hybrid vehicle, and more particularly to operation control of a clutch that transmits power of an internal combustion engine.
- hybrid vehicles using both an internal combustion engine and an electric motor as a power source have been developed.
- a hybrid system of a hybrid vehicle there are roughly divided into a series mode and a parallel mode.
- the series mode is a system in which a generator is driven by the power of an internal combustion engine, and an electric motor coupled to a drive shaft is driven by electric power obtained by the generator to drive the vehicle.
- the parallel mode the drive shaft is driven by the power of the internal combustion engine, the electric motor coupled to the drive shaft is driven by the electric power obtained from the storage battery, and the power of the internal combustion engine and the electric motor are driven according to the driving state of the vehicle.
- the vehicle is driven using either one or both of the power.
- the internal combustion engine is used only for driving the generator, and the internal combustion engine can be operated in the most efficient operation state of the internal combustion engine regardless of the operation state of the vehicle. Can be better.
- the drive shaft is driven by the power output from the internal combustion engine, and the power of the internal combustion engine is not converted to electric power by the generator, and loss due to conversion to electric power by the generator is lost. Therefore, it is possible to further improve fuel efficiency compared to the series mode.
- the series mode and the parallel mode are comprehensively determined from the fuel consumption and the output torque, and are switched at a vehicle speed that improves the balance.
- the series mode and the parallel mode are comprehensively determined from the fuel consumption and the output torque, and are switched at a vehicle speed that improves the balance.
- the driver requests a large torque when traveling at a vehicle speed higher than the switching vehicle speed,
- the maximum torque that can be generated as a vehicle cannot be generated.
- the present invention has been made to solve such problems, and the object of the present invention is to provide a hybrid vehicle that can generate the maximum torque as a vehicle and can improve the motion performance of the vehicle. It is to provide a control device.
- a control apparatus for a hybrid vehicle includes an internal combustion engine and an electric motor mounted on a vehicle, drive wheels driven by at least one of the internal combustion engine and the electric motor, and the internal combustion engine.
- a generator driven by an engine to generate electric power, a secondary battery for storing electric power generated by the electric generator, and supplying the stored electric power to the electric motor; and an intervening system between the internal combustion engine and the driving wheel.
- a clutch for connecting / disconnecting the power transmitted from the internal combustion engine to the driving wheel, and the driving by the power generated by the electric motor by the power supplied from the secondary battery or the generator by opening the clutch.
- Mode switching control means for switching between the parallel mode for driving the drive wheels, and the mode switching control means matches the maximum torque that can be generated in the series mode and the maximum torque that can be generated in the parallel mode.
- the series mode and the parallel mode are switched according to the vehicle speed.
- the vehicle further comprises an operation state switching means for switching the operation state of the vehicle to a first operation mode and a second operation mode in which the power consumption of the secondary battery is suppressed from the first operation mode.
- the switching control unit is configured so that the maximum torque that can be generated in the series mode matches the maximum torque that can be generated in the parallel mode.
- the series mode and the parallel mode are driven at a vehicle speed lower than the switching vehicle speed in the first driving mode. It is preferable to switch the mode (Claim 2).
- the battery further comprises a secondary battery remaining amount detecting means for detecting a charging rate of the secondary battery, and the mode switching control means can be generated in the series mode when the charging rate is a predetermined value or more.
- the mode switching control means can be generated in the series mode when the charging rate is a predetermined value or more. Switching between the series mode and the parallel mode at a vehicle speed at which the maximum torque that can be generated in the parallel mode and the maximum torque that can be generated in the parallel mode coincide with each other, The vehicle speed for switching between the series mode and the parallel mode may be reduced as the charging rate of the secondary battery decreases based on the detection result of the secondary battery remaining amount detecting means.
- the switching of the hybrid system from the series mode to the parallel mode is switched at a vehicle speed at which the maximum torque that can be generated in the series mode and the maximum torque that can be generated in the parallel mode match. I have to. Therefore, the hybrid system is switched to a vehicle speed that matches the maximum torque that can be generated in each mode, and the maximum output torque of the vehicle can always be generated, so that the motion performance of the vehicle can be improved. Item 1).
- the driving state switching means When the driving state switching means is the first driving mode, switching between the series mode and the parallel mode is performed at a vehicle speed at which the maximum torque that can be generated in the series mode and the maximum torque that can be generated in the parallel mode match.
- the driving state switching means When the driving state switching means is in the second driving mode, the series mode and the parallel mode are switched at a vehicle speed lower than the switching speed between the series mode and the parallel mode in the first driving mode. Yes.
- the vehicle speed for switching from the series mode to the parallel mode in the second operation mode is made lower than the vehicle speed in the first operation mode, for example, when the vehicle is traveling at a low speed, the series mode is changed to the parallel mode.
- the period for generating power by driving the generator with the internal combustion engine in the series mode can be shortened. Therefore, driving a generator with an internal combustion engine in series mode and obtaining power results in poor energy conversion efficiency at the generator. Therefore, shortening the period during which the generator is driven with the internal combustion engine reduces the loss due to energy conversion.
- the fuel consumption of the internal combustion engine can be improved (claim 2).
- the travel distance of the secondary battery can be increased.
- FIG. 1 is a schematic configuration diagram of a vehicle equipped with a control device for a hybrid vehicle according to the present invention. It is a block diagram of ECU of the control apparatus of the hybrid vehicle which concerns on this invention. It is a control flowchart of hybrid system switching control concerning the present invention. It is a figure which shows the relationship between the torque of the control apparatus of the hybrid vehicle which concerns on this invention, and a vehicle speed. It is a figure which shows the relationship between the charging rate of the high voltage battery which concerns on this invention, and switching vehicle speed.
- FIG. 1 is a schematic configuration diagram of a vehicle equipped with a control device for a hybrid vehicle according to the present invention.
- FIG. 2 is a block diagram of the HV-ECU of the hybrid vehicle control apparatus according to the present invention.
- the configuration of the hybrid vehicle control device will be described below.
- a vehicle 1 in which a control device for a hybrid vehicle according to the present invention is used includes an engine (internal combustion engine) 4 to which fuel is supplied from a fuel tank 2 via a fuel pipe 3 and a high-voltage battery (travel device).
- This is a hybrid vehicle in which a charging cable extending from an external power source is connected to the high-voltage battery 5 with a charger.
- the hybrid vehicle control apparatus includes an engine 4, a high voltage battery 5, a generator 6, a travel motor 9, a clutch 10, and a vehicle speed sensor mounted on the vehicle 1. 11, a travel mode switch (driving state switching means) 12, and a control device for performing comprehensive control of the vehicle, including an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), and a central processing unit
- the engine 4 generates power according to the amount of operation of an accelerator pedal (not shown) of the driver.
- the power generated by the engine 4 is transmitted to the drive shaft 14 that drives the drive wheels 15 via the generator 6 and the clutch 10 via the speed reducer 13 with a fixed gear ratio.
- the high voltage battery 5 is composed of a secondary battery such as a lithium ion battery. Further, the high voltage battery 5 includes a battery module including a plurality of battery cells each having a cell monitoring unit for monitoring the battery cell, and a temperature of the battery module based on the output of the cell monitoring unit. And a battery monitoring unit that monitors a state of charge (hereinafter referred to as SOC) and the like.
- SOC state of charge
- the generator 6 is driven by the engine 4 to generate electric power, and supplies power to the high voltage battery 5 or the traveling motor 9 via the inverter 8.
- the operation of the generator 6 is controlled by the inverter 8.
- the inverter 8 controls the power generation of the generator 6 and the driving of the traveling motor 9 based on a control signal from the HV-ECU 20.
- the clutch 10 is interposed between the engine 4 and the drive shaft 14, and connects / disconnects transmission of power of the engine 4 to the drive shaft 14 based on a control signal from the HV-ECU 20.
- the vehicle speed sensor 11 is provided at the hub portion at the end of the drive shaft 14 and detects the vehicle speed of the vehicle 1.
- the travel mode switch 12 is a dial type switch.
- the driving mode switch 12 is operated by the driver and rotates the driving mode switch 12 so that the driver arbitrarily selects, for example, a normal mode (first driving mode) in which the exercise performance during driving is emphasized, or during driving.
- a traveling mode such as an ECO mode (second operation mode) for suppressing power consumption and fuel consumption is switched.
- the first operation mode is described as a normal mode and the second operation mode is described as an ECO mode.
- the first operation mode is the power mode and the second operation mode is described.
- the mode can also be considered as a normal mode.
- the HV-ECU 20 is a control device for performing overall control of the vehicle 1 and includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit (CPU), a timer, and the like. Consists of. On the input side of the HV-ECU 20, the battery monitoring unit of the high voltage battery 5, the vehicle speed sensor 11, and the travel mode switch 12 are connected, and detection information from these devices is input.
- the engine 4, the inverter 8, and the clutch 10 are connected to the output side of the HV-ECU 20.
- the HV-ECU 20 includes a switching vehicle speed determination unit 21, a series / parallel switching determination unit 22, and a clutch control unit 23.
- the switching vehicle speed determination unit 21 determines the driving mode requested by the driver based on the switch position information of the driving mode switch 12 operated by the driver, and sets the vehicle speed for switching between the hybrid series mode and the parallel mode. Do.
- the series / parallel switching determination unit 22 switches between the series mode and the parallel mode based on the switching vehicle speed set for the travel mode determined by the switching vehicle speed determination unit 21 and the vehicle speed detected by the vehicle speed sensor 11. Make a decision.
- the clutch control unit 23 controls connection / disconnection of the clutch 10 based on the determination result in the series / parallel switching determination unit 22.
- the thus configured HV-ECU 20 controls the inverter 8 and the clutch 10 based on the vehicle speed detected by the vehicle speed sensor 11 to drive the vehicle 1 only with the power of the driving motor 9.
- the vehicle travels by switching between the series mode to be driven and the parallel mode in which the vehicle 1 is driven by the power of the engine 4 and the driving motor 9.
- the clutch 10 is disengaged and power transmission from the engine 4 to the drive shaft 14 via the speed reducer 13 is disabled.
- the inverter 8 is controlled to generate electric power by the generator 6 using the power of the engine 4, and the electric power generated by the generator 6 and the electric power stored in the high voltage battery 5 are supplied to the traveling motor 9.
- FIG. 3 is a control flowchart of the hybrid system switching control.
- FIG. 4 is a diagram showing the relationship between the torque of the control device for the hybrid vehicle and the vehicle speed, and the thick solid line in the figure indicates the maximum torque that can be generated in the series mode.
- the maximum torque in the series mode is the maximum torque that can be generated by the traveling motor 9 by the electric power supplied from the high voltage battery 5 and the generator 6.
- the thick broken line in the figure indicates the maximum torque that can be generated in the parallel mode.
- the maximum torque in the parallel mode is determined by the maximum torque that can be generated in the engine 4 indicated by a thin one-dot chain line in the figure and the electric power supplied only from the high voltage battery 5 indicated by the thin two-dot chain line in the figure. This is the sum of the maximum torque that can be generated by the motor 9.
- a vehicle speed Vn in the figure is a vehicle speed at which the hybrid system switches from the series mode to the parallel mode when the travel mode is the normal mode (first operation mode).
- the vehicle speed Vn is set to a vehicle speed at which the maximum torque based on the vehicle speed in the series mode matches the maximum torque based on the vehicle speed in the parallel mode.
- the vehicle speed Ve in the figure is a vehicle speed at which the hybrid system switches from the series mode to the parallel mode when the travel mode is the ECO mode (second operation mode).
- the vehicle speed Ve is set to a vehicle speed lower than the vehicle speed Vn.
- step S10 it is determined whether or not the ECO mode is set. Specifically, the switching vehicle speed determination unit 21 determines whether or not the travel mode is the ECO mode from the switch position information of the travel mode switch 12. If the determination result is true (Yes) and the travel mode is the ECO mode, the process proceeds to step S12, and the switching vehicle speed Vc is set to the vehicle speed Ve shown in FIG. Then, the process proceeds to step S16. If the determination result is NO (No) and the traveling mode is the normal mode, the switching vehicle speed Vc is set to the vehicle speed Vn shown in FIG. Then, the process proceeds to step S16.
- step S16 it is determined whether or not the vehicle speed is equal to or higher than the switching vehicle speed Vc.
- the series / parallel switching determination unit 22 determines whether or not the current vehicle speed detected by the vehicle speed sensor 11 is equal to or higher than the switching vehicle speed Vc set in step S12 or step S14. If the determination result is true (Yes) and the current vehicle speed is equal to or higher than the switching vehicle speed Vc, the process proceeds to step S18 to set the hybrid system to the parallel mode. Then, the process proceeds to step S22. If the determination result is NO (No) and the current vehicle speed is lower than the switching vehicle speed Vc, the hybrid system is set to the series mode. Then, the process proceeds to step S22.
- step S22 it is determined whether or not the mode is a parallel mode. Specifically, in step S18, the clutch control unit 23 determines whether or not the parallel mode has been set. If the determination result is true (Yes) and the parallel mode is set, the process proceeds to step S24. If the determination result is NO (No) and the series mode is set, the process proceeds to step S26. In step S24, a control signal is output from the clutch control unit 23 to control the operation so that the clutch 10 is connected. In addition, the inverter 8 is controlled so that the generator 6 cannot generate power. Then, this routine is exited.
- step S26 a control signal is output from the clutch control unit 23 to control the operation so that the clutch 10 is released.
- the inverter 8 is controlled so that the generator 6 can generate power with the power of the engine 4. Then, this routine is exited.
- the vehicle speed Vn at which the maximum torque that can be generated in the series mode and the maximum torque that can be generated in the parallel mode intersect in switching the hybrid system from the series mode to the parallel mode. To switch.
- the switching of the hybrid system is set to the vehicle speed Vn at which the maximum torque that can be generated in each mode intersects, and the maximum output torque as the vehicle can always be generated, so that the motion performance of the vehicle can be improved.
- the driving mode is the normal mode
- the series mode and the parallel mode are switched at the vehicle speed Vn at which the maximum torque that can be generated in the series mode and the maximum torque that can be generated in the parallel mode intersect.
- the ECO mode switching between the series mode and the parallel mode in the normal mode is switched between the series mode and the parallel mode at a vehicle speed Ve lower than the vehicle speed Vn.
- the vehicle speed Ve for switching from the series mode to the parallel mode in the ECO mode is made lower than the vehicle speed Vn for the normal mode, and switching from the series mode to the parallel mode from when the vehicle is traveling at low speed
- the period in which the generator 6 is driven by the engine 4 in the series mode to generate power can be shortened. Therefore, driving the generator 6 with the engine 4 in the series mode to obtain electric power has a low energy conversion efficiency in the generator 6. Therefore, the period of driving the generator 6 with the engine 4 is shortened to reduce the loss due to energy conversion.
- the fuel consumption of the engine 4 can be improved.
- the frequency of mode switching can be suppressed as compared with a vehicle that switches between the series mode and the parallel mode by an accelerator operation as a driver's torque request, so that the life of the clutch 10 is extended. Torque fluctuation at the time of mode switching can be suppressed.
- the vehicle speed Ve for switching the hybrid system in the ECO mode is fixed, but the present invention is not limited to this.
- the SOC of the high voltage battery 5 is used using a map as shown in FIG.
- the vehicle speed Ve may be corrected based on the above.
- the vehicle speed Ve for switching between the series mode and the parallel mode is decreased, and the vehicle 1 can be driven by the power of the engine 4. Reduction of SOC can be suppressed, and the travel distance by the high voltage battery 5 can be extended.
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Abstract
Description
このようなことから、車両の低車速時には電動機の動力のみで走行するシリーズモードとし、車速が上昇すると内燃機関と電動機の動力で走行するパラレルモードとすることで、車両の燃費を悪化させることなく、動力性能を確保する技術が開発されている(特許文献1を参照)。
しかしながら、特許文献1のように燃費と出力とがバランスの良い車速でシリーズモードとパラレルモードとを切り換えるようにすると、切り換え車速よりも高い車速での走行時に運転者が大きなトルクを要求した場合には、車両として発生することのできる最大トルクを発生することができない問題がある。
本発明は、この様な問題を解決するためになされたもので、その目的とするところは、車両としての最大トルクを発生することができ、車両の運動性能を向上することのできるハイブリッド車両の制御装置を提供することにある。
したがって、ハイブリッド方式の切り換えをそれぞれのモードで発生可能な最大トルクが一致する車速としており、車両として最大の出力トルクを常に発生することができるので、車両の運動性能を向上させることができる(請求項1)。
したがって、シリーズモードでの内燃機関で発電機を駆動し電力を得ることは発電機でのエネルギ変換効率が悪いことから、内燃機関で発電機の駆動する期間を短くすることにより、エネルギ変換による損失を低減でき、内燃機関の燃費を向上させることができる(請求項2)。
図1は、本発明に係るハイブリッド車両の制御装置を搭載した車両の概略構成図である。図2は、本発明に係るハイブリッド車両の制御装置のHV-ECUのブロック図である。以下、ハイブリッド車両の制御装置の構成を説明する。
本発明に係るハイブリッド車両の制御装置が用いられる車両1は、当該車両1の走行装置として、燃料タンク2より燃料配管3を介して燃料が供給されるエンジン(内燃機関)4と高電圧バッテリ(二次電池)5及びジェネレータ(発電機)6より高電圧回路7を介して高電圧の電力が供給されインバータ8により作動を制御される走行用モータ(電動機)9とを備え、図示しない充電リッドに外部電源より延びる充電ケーブルを接続し、充電器にて高電圧バッテリ5を充電することができるハイブリッド自動車である。
高電圧バッテリ5は、リチウムイオン電池等の二次電池で構成されるものである。また、高電圧バッテリ5は、電池セルを監視するセルモニタリングユニットを備える複数の電池セルを一つのモジュールとし更に複数のモジュールで構成される電池モジュールと、セルモニタリングユニットの出力に基づき電池モジュールの温度及び充電率(State Of Charge、以下、SOC)等を監視するバッテリモニタリングユニットとで構成されている。
インバータ8は、HV-ECU20からの制御信号に基づきジェネレータ6の発電及び走行用モータ9の駆動を制御するものである。
車速センサ11は、駆動軸14の端部のハブ部に設けられ、車両1の車速を検出するものである。
走行モードスイッチ12は、ダイヤル式のスイッチである。走行モードスイッチ12は、運転者によって操作され、走行モードスイッチ12を回転させて、運転者が任意に例えば、走行時の運動性能を重視するNormalモード(第1の運転モード)や、走行時の電力消費及び燃料消費を抑制するECOモード(第2の運転モード)等の走行モードを切り換えるものである。尚、本実施例では、第1の運転モードをNormalモードとし、第2の運転モードをECOモードとして説明するが、別の実施例として第1の運転モードがPowerモードであって第2の運転モードがNormalモードと考えることもできる。
HV-ECU20の入力側には、上記高電圧バッテリ5のバッテリモニタリングユニット、車速センサ11及び走行モードスイッチ12が接続されており、これらの機器からの検出情報が入力される。
図2に示すように、HV-ECU20は、切換車速判定部21と、シリーズパラレル切換判定部22と、クラッチ制御部23とで構成されている。
切換車速判定部21は、運転者により操作される走行モードスイッチ12のスイッチ位置情報に基づき、運転者が要求する走行モードを判定し、ハイブリッド方式のシリーズモードとパラレルモードとを切り換える車速の設定を行う。
クラッチ制御部23は、シリーズパラレル切換判定部22での判定結果に基づいてクラッチ10の断接の制御を行う。
図3は、ハイブリッド方式切換制御の制御フローチャートである。また、図4は、ハイブリッド車両の制御装置のトルクと車速の関係を示す図であり、図中太実線はシリーズモードでの発生可能な最大トルクを示す。詳しくは、シリーズモードの最大トルクは、高電圧バッテリ5とジェネレータ6とから供給される電力により走行用モータ9で発生可能な最大トルクである。また、図中太破線はパラレルモードでの発生可能な最大トルクを示す。詳しくは、パラレルモードの最大トルクは、図中細一点鎖線で示されるエンジン4での発生可能な最大トルクと図中細二点鎖線で示される高電圧バッテリ5のみから供給される電力により走行用モータ9で発生可能な最大トルクとを合算したトルクである。また、図中の車速Vnは、走行モードがNormalモード(第1の運転モード)である時のハイブリッド方式がシリーズモードからパラレルモードへ切り換わる車速である。そして、当該車速Vnは、シリーズモードでの当該車速に基づく最大トルクとパラレルモードでの当該車速に基づく最大トルクとが一致する車速に設定されている。また、図中の車速Veは、走行モードがECOモード(第2の運転モード)である時のハイブリッド方式がシリーズモードからパラレルモードへ切り換わる車速である。そして、当該車速Veは、車速Vnよりも低い車速に設定されている。
ステップS24では、クラッチ制御部23より制御信号を出力してクラッチ10を接続するように作動を制御する。また、合わせてジェネレータ6で発電不能となるようにインバータ8を制御する。そして、本ルーチンを抜ける。
このように、本発明に係るハイブリッド車両の制御装置では、シリーズモードからパラレルモードへのハイブリッド方式の切り換えをシリーズモードで発生可能な最大トルクとパラレルモードで発生可能な最大トルクとが交差する車速Vnにて切り換えるようにしている。
また、走行モードがNormalモードである場合には、シリーズモードで発生可能な最大トルクとパラレルモードで発生可能な最大トルクとが交差する車速Vnにてシリーズモードとパラレルモードとを切り換え、走行モードがECOモードである場合には、Normalモードでのシリーズモードとパラレルモードとの切り換え車速Vnより低い車速Veでシリーズモードとパラレルモードとを切り換えるようにしている。
したがって、シリーズモードでのエンジン4でジェネレータ6を駆動し電力を得ることはジェネレータ6でのエネルギ変換効率が悪いことから、エンジン4でジェネレータ6の駆動する期間を短くすることにより、エネルギ変換による損失を低減でき、エンジン4の燃費を向上させることができる。
以上で発明の実施形態の説明を終えるが、本発明の形態は実施形態に限定されるものではない。
4 エンジン(内燃機関)
5 高電圧バッテリ(二次電池)
6 ジェネレータ(発電機)
9 走行用モータ(電動機)
10 クラッチ
11 車速センサ
12 走行モードスイッチ(運転状態切換手段)
15 駆動輪
20 HV-ECU(モード切換制御手段)
21 切換車速判定部
22 シリーズパラレル切換判定部
23 クラッチ制御部
Claims (3)
- 車両に搭載された内燃機関及び電動機と、
前記内燃機関及び前記電動機のうち少なくともいずれか一方により駆動される駆動輪と、
前記内燃機関により駆動されて発電する発電機と、
前記発電機にて発電した電力を蓄電し、更に蓄電した電力を前記電動機に供給する二次電池と、
前記内燃機関と前記駆動輪との間に介装され、前記内燃機関から前記駆動輪に伝達される動力を断接するクラッチと、
前記クラッチを開放して前記二次電池又は前記発電機から供給される電力により前記電動機が発生した動力で前記駆動輪を駆動するシリーズモードと、前記クラッチを接続して前記内燃機関の動力と前記二次電池から供給される電力により前記電動機が発生した動力とで前記駆動輪を駆動するパラレルモードとの切り換えを行うモード切換制御手段と、を備え、
前記モード切換制御手段は、前記シリーズモードで発生可能な最大トルクと前記パラレルモードで発生可能な最大トルクとが一致する車速にて前記シリーズモードと前記パラレルモードとを切り換えることを特徴とするハイブリッド車両の制御装置。 - 請求項1記載のハイブリッド車両の制御装置であって、
前記車両の運転状態を第1の運転モードと前記第1の運転モードより前記二次電池の電力消費量を抑制した第2の運転モードとに切り換える運転状態切換手段を備え、
前記モード切換制御手段は、前記運転状態切換手段が前記第1の運転モードである場合には、前記シリーズモードで発生可能な最大トルクと前記パラレルモードで発生可能な最大トルクとが一致する車速にて前記シリーズモードと前記パラレルモードとの切り換えを行い、前記運転状態切換手段が前記第2の運転モードである場合には、前記第1の運転モードでの切り換え車速より低い車速で前記シリーズモードと前記パラレルモードとを切り換えることを特徴とする。 - 請求項1或いは2記載のハイブリッド車両の制御装置であって、
前記二次電池の充電率を検出する二次電池残量検出手段と備え、
前記モード切換制御手段は、前記充電率が所定値以上の場合には、前記シリーズモードで発生可能な最大トルクと前記パラレルモードで発生可能な最大トルクとが一致する車速にて前記シリーズモードと前記パラレルモードとの切り換えを行い、前記充電率が前記所定値未満となった場合には、前記二次電池残量検出手段の検出結果に基づき、前記二次電池の充電率が低下するにつれ、前記シリーズモードと前記パラレルモードとを切り換える車速を低下させることを特徴とする。
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EP12827372.9A EP2733034B1 (en) | 2011-09-01 | 2012-08-07 | Control device for hybrid vehicle |
CN201280042072.1A CN104024073B (zh) | 2011-09-01 | 2012-08-07 | 用于混合动力车辆的控制装置 |
US14/241,692 US9346461B2 (en) | 2011-09-01 | 2012-08-07 | Control device for determining vehicle speed for switching from series mode to parallel mode |
KR1020147005017A KR101529837B1 (ko) | 2011-09-01 | 2012-08-07 | 하이브리드 차량의 제어 장치 |
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Also Published As
Publication number | Publication date |
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EP2733034B1 (en) | 2018-11-14 |
CN104024073A (zh) | 2014-09-03 |
JP2013052710A (ja) | 2013-03-21 |
CN104024073B (zh) | 2017-03-15 |
US9346461B2 (en) | 2016-05-24 |
US20140195092A1 (en) | 2014-07-10 |
JP5720893B2 (ja) | 2015-05-20 |
EP2733034A4 (en) | 2017-06-14 |
EP2733034A1 (en) | 2014-05-21 |
KR20140033247A (ko) | 2014-03-17 |
KR101529837B1 (ko) | 2015-06-17 |
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