WO2012101796A1 - 車両および車両用制御方法 - Google Patents
車両および車両用制御方法 Download PDFInfo
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- WO2012101796A1 WO2012101796A1 PCT/JP2011/051557 JP2011051557W WO2012101796A1 WO 2012101796 A1 WO2012101796 A1 WO 2012101796A1 JP 2011051557 W JP2011051557 W JP 2011051557W WO 2012101796 A1 WO2012101796 A1 WO 2012101796A1
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- vehicle
- power
- electrical machine
- rotating electrical
- engine
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
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Images
Classifications
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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
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/12—Controlling the power contribution of each of the prime movers to meet required power demand using control strategies taking into account route information
-
- 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
- B60K6/445—Differential gearing distribution type
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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
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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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
-
- 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
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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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/083—Torque
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
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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
-
- 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
- Y10S903/93—Conjoint control of different elements
Definitions
- the present invention relates to control of a vehicle on which a rotating electric machine and an internal combustion engine are mounted.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2007-23919
- the brake pedal is depressed when the push switch is pressed.
- a technique for restarting the engine even if it is not disclosed is disclosed.
- a hybrid vehicle equipped with a motor generator and an engine has attracted attention as one of countermeasures for environmental problems.
- a hybrid vehicle for example, a vehicle in which elements of a drive wheel, an engine, and a motor generator are mechanically connected is known.
- An object of the present invention is to provide a vehicle and a vehicle control method for controlling an engine to a restartable state when an engine stop instruction is received during high-speed traveling.
- a vehicle includes a drive shaft for rotating drive wheels, an internal combustion engine, a first rotating electrical machine, a power storage device for transferring power to and from the first rotating electrical machine, a drive shaft, and an internal combustion engine.
- a drive shaft for rotating drive wheels
- an internal combustion engine for rotating drive wheels
- a first rotating electrical machine for rotating drive wheels
- a power storage device for transferring power to and from the first rotating electrical machine
- a drive shaft By mechanically connecting each of the three elements of the output shaft of the engine and the rotating shaft of the first rotating electrical machine, and making any one of the three elements a reaction force element, between the other two elements
- a power transmission device capable of power transmission, an input unit for receiving an instruction to stop the system of the vehicle from the driver, a case where the input unit receives a stop instruction while the vehicle is running, and in the power storage device
- a control unit for controlling the first rotating electrical machine so as to transmit the torque of the first rotating electrical machine to the output shaft of the internal combustion engine when a predetermined condition for limiting the
- the first rotating electrical machine generates power when starting the internal combustion engine in a stopped state while the vehicle is traveling.
- control unit controls the internal combustion engine to stop fuel injection to the internal combustion engine when a stop instruction is received by the input unit while the vehicle is running.
- control unit when the control unit receives a stop instruction from the input unit while the vehicle is traveling and a predetermined condition is satisfied, the control unit increases the degree of restriction of the input power.
- the first rotating electric machine is controlled so that the electric power consumed in the one rotating electric machine is increased.
- the predetermined condition includes a condition that the remaining capacity of the power storage device is higher than a threshold value.
- the predetermined condition includes a condition that the temperature of the power storage device is lower than a threshold value.
- the predetermined condition includes a condition that the charging duration of the power storage device exceeds a predetermined time.
- the vehicle further includes a second rotating electric machine having a rotating shaft coupled to the drive shaft.
- the controller is configured to generate a reaction force with respect to the torque of the first rotating electrical machine when a stop instruction is received by the input unit while the vehicle is traveling and a predetermined condition is satisfied. Controls two-rotary electric machine.
- the power transmission device is a planetary gear mechanism having a sun gear, a pinion gear, a carrier, and a ring gear.
- the sun gear is connected to the rotation shaft of the first rotating electrical machine.
- the carrier is coupled to the output shaft of the internal combustion engine.
- the ring gear is coupled to the drive shaft.
- a vehicle control method includes a drive shaft for rotating drive wheels, an internal combustion engine, a rotating electrical machine, a power storage device for transferring power to and from the rotating electrical machine, a drive shaft, and an internal combustion engine. Power transmission between the other two elements is made by mechanically connecting each of the three elements of the engine output shaft and the rotating shaft of the rotating electrical machine, and using any one of the three elements as a reaction force element. It is the control method for vehicles used for the vehicle containing the power transmission device which can do.
- the vehicle control method includes a step of determining whether or not a vehicle system stop instruction has been received from a driver, a case in which a stop instruction is received while the vehicle is traveling, and input power is received in the power storage device. And a step of controlling the vehicle so that the torque of the rotating electrical machine is transmitted to the output shaft of the internal combustion engine when a predetermined condition to be limited is satisfied.
- the first rotating electrical machine is controlled by controlling the vehicle so that the torque of the first rotating electrical machine is transmitted to the internal combustion engine when a predetermined condition for limiting the input power in the power storage device is satisfied. It becomes possible to consume electric power. By consuming electric power in the first rotating electrical machine, the remaining capacity of the power storage device can be reduced. Thereby, when the input power is restricted due to the high remaining capacity, the degree of the restriction can be relaxed. Therefore, the electric power generated by the power generation of the first rotating electrical machine can be absorbed by the power storage device.
- FIG. 6 is a collinear diagram (No. 1) for describing the operation of the vehicle in the present embodiment; It is a functional block diagram of ECU mounted in the vehicle which concerns on this Embodiment. It is a figure which shows the flowchart of the program performed with ECU mounted in the vehicle which concerns on this Embodiment.
- FIG. 6 is a collinear diagram (No. 2) for describing the operation of the vehicle in the present embodiment.
- the vehicle 1 includes an engine 10, a drive shaft 16, a first motor generator (hereinafter referred to as a first MG) 20, a second motor generator (hereinafter referred to as a second MG) 30, and a power split device 40. , A reduction gear 58, a PCU (Power Control Unit) 60, a battery 70, a drive wheel 80, a start switch 150, and an ECU (Electronic Control Unit) 200.
- a first MG first motor generator
- a second motor generator hereinafter referred to as a second MG
- a reduction gear 58 A reduction gear 58, a PCU (Power Control Unit) 60, a battery 70, a drive wheel 80, a start switch 150, and an ECU (Electronic Control Unit) 200.
- the vehicle 1 travels by driving force output from at least one of the engine 10 and the second MG 30.
- the power generated by the engine 10 is divided into two paths by the power split device 40.
- One of the two routes is a route transmitted to the drive wheel 80 via the speed reducer 58, and the other route is a route transmitted to the first MG 20.
- the first MG 20 and the second MG 30 are, for example, three-phase AC rotating electric machines.
- First MG 20 and second MG 30 are driven by PCU 60.
- the first MG 20 has a function as a generator that generates power using the power of the engine 10 divided by the power split device 40 and charges the battery 70 via the PCU 60. Further, first MG 20 receives electric power from battery 70 and rotates a crankshaft that is an output shaft of engine 10. Thus, the first MG 20 has a function as a starter for starting the engine 10.
- the second MG 30 has a function as a driving motor that applies driving force to the driving wheels 80 using at least one of the electric power stored in the battery 70 and the electric power generated by the first MG 20. Second MG 30 also has a function as a generator for charging battery 70 via PCU 60 using electric power generated by regenerative braking.
- the engine 10 is an internal combustion engine such as a gasoline engine or a diesel engine.
- the engine 10 includes a plurality of cylinders 102 and a fuel injection device 104 that supplies fuel to each of the plurality of cylinders 102. Based on the control signal S1 from the ECU 200, the fuel injection device 104 injects an appropriate amount of fuel to each cylinder at an appropriate time, or stops fuel injection to each cylinder.
- the engine 10 is provided with an engine rotation speed sensor 11 for detecting the rotation speed of the crankshaft of the engine 10 (hereinafter referred to as engine rotation speed) Ne.
- the engine rotation speed sensor 11 transmits a signal indicating the detected engine rotation speed Ne to the ECU 200.
- the power split device 40 mechanically connects each of the three elements of the drive shaft 16 for rotating the drive wheels 80, the output shaft of the engine 10, and the rotary shaft of the first MG 20.
- the power split device 40 enables transmission of power between the other two elements by using any one of the three elements described above as a reaction force element.
- the rotation shaft of second MG 30 is connected to drive shaft 16.
- the power split device 40 is a planetary gear mechanism including a sun gear 50, a pinion gear 52, a carrier 54, and a ring gear 56.
- Pinion gear 52 meshes with each of sun gear 50 and ring gear 56.
- the carrier 54 supports the pinion gear 52 so as to be capable of rotating, and is connected to the crankshaft of the engine 10.
- Sun gear 50 is coupled to the rotation shaft of first MG 20.
- Ring gear 56 is coupled to the rotation shaft of second MG 30 and reduction gear 58 via drive shaft 16.
- Reduction gear 58 transmits power from power split device 40 and second MG 30 to drive wheels 80. Reducer 58 transmits the reaction force from the road surface received by drive wheels 80 to power split device 40 and second MG 30.
- PCU 60 converts the DC power stored in battery 70 into AC power for driving first MG 20 and second MG 30.
- PCU 60 includes a converter and an inverter (both not shown) controlled based on control signal S2 from ECU 200.
- the converter boosts the voltage of the DC power received from battery 70 and outputs it to the inverter.
- the inverter converts the DC power output from the converter into AC power and outputs the AC power to first MG 20 and / or second MG 30.
- first MG 20 and / or second MG 30 are driven using the electric power stored in battery 70.
- the inverter converts AC power generated by the first MG 20 and / or the second MG 30 into DC power and outputs the DC power to the converter.
- the converter steps down the voltage of the DC power output from the inverter and outputs the voltage to battery 70. Thereby, battery 70 is charged using the electric power generated by first MG 20 and / or second MG 30.
- the converter may be omitted.
- the battery 70 is a power storage device and a rechargeable DC power source.
- a secondary battery such as nickel metal hydride or lithium ion is used.
- the voltage of the battery 70 is about 200V, for example.
- Battery 70 may be charged using electric power supplied from an external power source (not shown) in addition to being charged using electric power generated by first MG 20 and / or second MG 30 as described above.
- the battery 70 is not limited to a secondary battery, but may be a battery capable of generating a DC voltage, such as a capacitor, a solar battery, or a fuel battery.
- the battery 70 includes a battery temperature sensor 156 for detecting the battery temperature TB of the battery 70, a current sensor 158 for detecting the current IB of the battery 70, and a voltage sensor 160 for detecting the voltage VB of the battery 70. And are provided.
- the battery temperature sensor 156 transmits a signal indicating the battery temperature TB to the ECU 200.
- Current sensor 158 transmits a signal indicating current IB to ECU 200.
- Voltage sensor 160 transmits a signal indicating voltage VB to ECU 200.
- the start switch 150 is, for example, a push-type switch.
- the start switch 150 may be configured to insert a key into a key cylinder and rotate it to a predetermined position.
- Start switch 150 is connected to ECU 200.
- the start switch 150 transmits a signal ST to the ECU 200.
- the ECU200 judges that it received the start instruction, for example, when signal ST is received when the system of vehicle 1 is a stop state, and makes the system of vehicle 1 shift from a stop state to a start state. Further, when the signal ST is received when the system of the vehicle 1 is in the activated state, the ECU 200 determines that a stop instruction has been received, and shifts the system of the vehicle 1 from the activated state to the stopped state.
- the operation of the start switch 150 by the driver when the system of the vehicle 1 is in the activated state is referred to as an IG off operation, and the driver operates the start switch 150 when the system of the vehicle 1 is in the stopped state.
- the operation is called IG on operation.
- the plurality of devices are in an operable state by supplying power to the plurality of devices necessary for the vehicle 1 to travel.
- some devices are stopped by supplying power to some of the plurality of devices necessary for the vehicle 1 to travel. Will stop operating.
- the first resolver 12 detects the rotational speed Nm1 of the first MG 20.
- the first resolver 12 transmits a signal indicating the detected rotation speed Nm1 to the ECU 200.
- the second resolver 13 detects the rotational speed Nm2 of the second MG 30.
- the second resolver 13 transmits a signal indicating the detected rotation speed Nm2 to the ECU 200.
- the wheel speed sensor 14 detects the rotational speed Nw of the drive wheel 80.
- the wheel speed sensor 14 transmits a signal indicating the detected rotation speed Nw to the ECU 200.
- ECU 200 calculates vehicle speed V based on the received rotational speed Nw.
- ECU 200 may calculate vehicle speed V based on rotation speed Nm2 of second MG 30 instead of rotation speed Nw.
- the ECU 200 generates a control signal S1 for controlling the engine 10 and outputs the generated control signal S1 to the engine 10.
- ECU 200 also generates a control signal S2 for controlling PCU 60 and outputs the generated control signal S2 to PCU 60.
- the ECU 200 controls the entire hybrid system, that is, the charging / discharging state of the battery 70 and the operating states of the engine 10, the first MG 20 and the second MG 30 so that the vehicle 1 can operate most efficiently by controlling the engine 10, the PCU 60, and the like. .
- ECU 200 calculates a required driving force corresponding to the amount of depression of an accelerator pedal (not shown) provided in the driver's seat. ECU 200 controls the torque of first MG 20 and second MG 30 and the output of engine 10 in accordance with the calculated required driving force.
- the vehicle 1 when the engine 10 is inefficient at the time of starting or running at a low speed, the vehicle 1 travels only by the second MG 30. Further, during normal travel, for example, the power split device 40 divides the power of the engine 10 into two paths of power.
- the drive wheel 80 is directly driven by one power.
- the first MG 20 is driven with the other power to generate power.
- ECU 200 drives second MG 30 using the generated electric power. In this way, driving of the driving wheel 80 is performed by driving the second MG 30.
- the second MG 30 driven by the rotation of the drive wheel 80 functions as a generator to perform regenerative braking.
- the electric power recovered by regenerative braking is stored in the battery 70.
- ECU 200 increases the output of engine 10 to increase the first MG 20 when the remaining capacity of the power storage device (described in the following description as SOC (State of Charge)) decreases and charging is particularly necessary. Increase the amount of power generated by Thereby, the SOC of the battery 70 is increased.
- the ECU 200 may perform control to increase the driving force from the engine 10 as necessary even during low-speed traveling. For example, the battery 70 needs to be charged as described above, an auxiliary machine such as an air conditioner is driven, or the temperature of the cooling water of the engine 10 is raised to a predetermined temperature.
- the ECU 200 determines the input power allowed when the battery 70 is charged based on the battery temperature TB and the current SOC (in the following description, “charging power upper limit value”). Output power (to be described as “discharge power upper limit value Wout” in the following description). For example, when the current SOC decreases, discharge power upper limit Wout is set to be gradually lower. On the other hand, when the current SOC increases, charging power upper limit value Win is set to gradually decrease.
- the secondary battery used as the battery 70 has a temperature dependency in which the internal resistance increases at a low temperature. Further, at a high temperature, it is necessary to prevent the temperature from excessively rising due to further heat generation. For this reason, it is preferable to reduce each of the discharge power upper limit value Wout and the charge power upper limit value Win when the battery temperature TB is low and high. ECU 200 sets charge power upper limit value Win and discharge power upper limit value Wout by using, for example, a map or the like according to battery temperature TB and the current SOC.
- the engine 10 when the engine 10 is stopped for some reason during high speed traveling, the engine may not be restarted immediately.
- a case is assumed in which the vehicle 1 is traveling at a high speed as indicated by a solid line described in the alignment chart of FIG.
- the left vertical axis of the three vertical axes in the collinear chart shown in FIG. 2 indicates the rotational speed of the sun gear 50, that is, the rotational speed Nm1 of the first MG 20.
- the vertical axis at the center of the alignment chart shown in FIG. 2 indicates the rotational speed of the carrier 54, that is, the engine rotational speed Ne.
- the vertical axis on the right side of the alignment chart shown in FIG. 2 indicates the rotational speed of the ring gear 56, that is, the rotational speed Nm2 of the second MG 30.
- shaft of the alignment chart of FIG. 2 shows a normal rotation direction, and the direction opposite to the arrow direction shows a negative rotation direction.
- the rotational speed Nm1 of the first MG 20 When the vehicle 1 travels, the rotational speed Nm1 of the first MG 20, the engine rotational speed Ne, and the rotational speed Nm2 of the second MG 30 maintain a relationship that is connected by a single straight line on the alignment chart of FIG. Thus, the rotational speeds Nm1, Ne, and Nm2 of the elements change.
- the rotational speed Nm1 of the first MG 20 is Nm1 (0)
- the engine rotational speed Ne is Ne (0)
- the rotational speed Nm2 of the second MG 30 is Nm2 (0).
- the first MG 20 generates power in the process of increasing the rotation speed of the first MG 20 from Nm1 (1) to Nm1 (0). Therefore, when charging is limited due to the SOC of battery 70 being higher than the normal SOC range, that is, when charging power upper limit Win is lower than when SOC is within the normal SOC range. The first MG 20 may not be able to generate power. As a result, the engine may not be restarted immediately.
- the ECU 200 receives a stop instruction from the start switch 150 while the vehicle 1 is traveling, and a predetermined condition for limiting the input power in the battery 70 is satisfied.
- the first MG 20 is controlled so as to transmit the torque of the first MG 20 to the output shaft of the engine 10.
- FIG. 3 shows a functional block diagram of ECU 200 mounted on vehicle 1 according to the present embodiment.
- ECU 200 includes a determination unit 202, a Win determination unit 204, a fuel cut control unit 206, and an MG control unit 208.
- the determination unit 202 determines whether or not the IG off operation has been performed.
- the determination unit 202 determines that the IG-off operation has been performed (stop instruction is received) when the signal ST is received from the start switch 150 when the system of the vehicle 1 is in the activated state. For example, the determination unit 202 may turn on an IG off determination flag when an IG off operation is performed.
- the determination unit 202 determines whether or not the vehicle 1 is traveling. The determination unit 202 determines that the vehicle 1 is traveling when the vehicle speed V is higher than the predetermined vehicle speed V (0). Note that the determination unit 202 may turn on the travel determination flag when it is determined that the vehicle 1 is traveling.
- the Win determination unit 204 determines whether or not a predetermined condition for limiting input power in the battery 70 is satisfied when the IG OFF operation is performed and the determination unit 202 determines that the vehicle 1 is traveling. Determine whether.
- the predetermined condition is a condition that the charging power upper limit Win is lower than the threshold value Win (0).
- the predetermined conditions are, for example, a condition that the SOC of the battery 70 is higher than the threshold value SOC (0), a condition that the battery temperature TB of the battery 70 is lower than the threshold value TB (0), Including at least one of the conditions that the charging duration Tc of the battery 70 is longer than the predetermined time Tc (0).
- Win determination unit 204 estimates SOC based on battery temperature TB, current IB, and voltage VB. For example, the Win determination unit 204 estimates an internal resistance having characteristics depending on the battery temperature TB based on the battery temperature TB. The Win determination unit 204 estimates an open circuit voltage (OCV) from the estimated internal resistance, the current IB, and the voltage VB. The Win determination unit 204 estimates the SOC based on the estimated open circuit voltage.
- OCV open circuit voltage
- the SOC estimation method described above is merely an example, and the SOC of battery 70 may be estimated using another known technique.
- the Win determination unit 204 may determine whether or not a predetermined condition is satisfied when, for example, both the IG off determination flag and the travel determination flag are in the on state. Further, the Win determination unit 204 may turn on the Win determination flag when a predetermined condition is satisfied.
- the fuel cut control unit 206 executes fuel cut control for stopping fuel injection to the cylinder 102 when the determination unit 202 determines that the IG-off operation is performed and the vehicle 1 is determined to be traveling.
- the fuel cut control unit 206 generates a control signal S1 indicating that fuel cut control is to be executed, and transmits the generated control signal S1 to the engine 10.
- the fuel cut control unit 206 may execute the fuel cut control when, for example, both the IG off determination flag and the travel determination flag are in the on state. Further, the fuel cut control unit 206 may stop the fuel injection to the cylinder 102 by not transmitting the control signal S1 to the engine 10.
- MG control unit 208 controls first MG 20 and second MG 30 to transmit the torque of first MG 20 to the output shaft of engine 10 when it is determined by Win determination unit 204 that a predetermined condition is satisfied.
- the MG control unit 208 controls the first MG 20 and the second MG 30 so that the first MG 20 generates a positive torque in the positive rotation direction in order to consume power in the first MG 20 when it is determined that a predetermined condition is satisfied. To do.
- the MG control unit 208 controls the first MG 20 so that the power consumed in the first MG 20 increases as the degree of restriction of the input power in the battery 70 increases.
- MG control unit 208 controls first MG 20 such that the greater the difference between the SOC and threshold value SOC (0), the greater the power consumed in first MG 20. To do.
- MG control unit 208 increases the power consumed in first MG 20 as the difference between battery temperature TB and threshold value TB (0) increases.
- the first MG 20 is controlled.
- the MG control unit 208 increases the power consumed in the first MG 20 as the difference between the charging duration Tc and the predetermined time Tc (0) increases.
- the first MG 20 is controlled.
- MG control unit 208 increases power consumption by increasing the torque generated in first MG 20. That is, MG control unit 208 determines torque command value Treq1 of first MG 20 in accordance with charging power upper limit value Win. For example, when charging power upper limit Win is lower than threshold value Win (0), MG control unit 208 provides torque command for first MG 20 such that the torque generated in first MG 20 increases as charging power upper limit Win decreases. The value Treq1 is determined.
- the MG control unit 208 controls the second MG 30 so that a reaction torque against the torque of the first MG 20 is generated. This is because when the torque in the positive rotation direction is generated in the first MG 20, the torque in the negative rotation direction is generated in the second MG 30 by the torque generated in the first MG 20, and the vehicle 1 is decelerated rapidly.
- the reaction torque can be reduced by the MG control unit 208 generating torque in the forward rotation direction in the second MG 30.
- the MG control unit 208 may determine the torque command value Treq2 of the second MG 30 so that torque that matches the reaction force torque is generated in the second MG 30.
- the MG control unit 208 may determine the torque command value Treq2 of the second MG 30 so that torque less than the torque that matches the reaction force torque is generated in the second MG 30.
- MG control unit 208 may determine torque command value Treq2 such that the deceleration of vehicle 1 is lower than a threshold value.
- the deceleration threshold value is a threshold value for determining whether or not a shock that can be recognized by the driver is generated in the vehicle 1 due to the large deceleration.
- MG control unit 208 may continue control of first MG 20 and second MG 30 until vehicle 1 stops, or controls first MG 20 and second MG 30 until an IG-on operation is performed by the driver. May be continued.
- the MG control unit 208 may control the first MG 20 and the second MG 30 so as to transmit the torque of the first MG 20 to the output shaft of the engine 10 when the Win determination flag is on.
- determination unit 202 Win determination unit 204, fuel cut control unit 206, and MG control unit 208 are all realized by the CPU of ECU 200 executing a program stored in the memory. However, it may be realized by hardware. Such a program is recorded on a storage medium and mounted on the vehicle.
- step (hereinafter, step is referred to as S) 100 ECU 200 determines whether or not an IG off operation has been performed. If the IG off operation has been performed (YES in S100), the process proceeds to S102. If not (NO in S100), the process returns to S100.
- ECU 200 determines whether or not vehicle 1 is traveling. ECU 200 determines that vehicle 1 is traveling when vehicle speed V of vehicle 1 is equal to or higher than predetermined vehicle speed V (0). If vehicle 1 is traveling (YES in S102), the process proceeds to S104. If not (NO in S102), the process returns to S100.
- ECU 200 executes fuel cut control.
- ECU 200 determines whether or not Win is narrowed. That is, ECU 200 determines that Win is narrowed when a predetermined condition is satisfied. If charging power upper limit value Win is narrowed (YES in S106), the process proceeds to S108. If not (NO in S106), this process ends.
- ECU 200 determines torque command value Treq1 of first MG 20 in accordance with charging power upper limit value Win, and determines torque command value Treq2 of second MG 30 based on the determined torque command value Treq1 of first MG 20. . Since the method of determining torque command values Treq1 and Treq2 is as described above, detailed description thereof will not be repeated.
- the first MG 20 is controlled so that torque according to the determined torque command value Treq1 is generated.
- second MG 30 is controlled so that torque according to determined torque command value Treq2 is generated.
- ECU 200 mounted on vehicle 1 based on the above-described structure and flowchart will be described with reference to the alignment chart of FIG. Since elements indicating the respective axes of the nomograph are the same as those of the nomograph of FIG. 2, the detailed description thereof will not be repeated.
- the rotation speed Nm1 of the first MG 20 is Nm1 (1) (forward rotation direction)
- the engine rotation speed Ne is Ne (1)
- the rotation speed Nm2 of the second MG 30 Is Nm2 (1).
- Torque Tm1 (0) generated in the first MG 20 when a predetermined condition is satisfied and the throttle amount of the charging power upper limit Win is large (hereinafter simply referred to as a large throttle)
- the arrow (black) in FIG. 5 is larger than the torque Tm1 (1) generated in the first MG 20 when the amount of restriction of the charging power upper limit value Win is small (hereinafter simply referred to as the case of small iris).
- the rotational speed Nm1 (2) of the first MG 20 when the aperture is large is higher than the rotational speed Nm1 (3) of the first MG 20 when the aperture is small. Therefore, the power consumption (rotation speed ⁇ torque) in the first MG 20 when the aperture is large is larger than the power consumption in the first MG 20 when the aperture is small.
- the torque Tm2 (0) (arrow (black) in FIG. 5) generated in the second MG 30 when the aperture is large is larger than the torque Tm2 (1) generated in the second MG 30 when the aperture is small.
- the torque generated in the second MG 30 is determined in accordance with the torque generated in the first MG 20, rapid deceleration of the vehicle 1 is suppressed.
- the SOC of the battery 70 decreases due to power consumption in the first MG 20. Furthermore, since the stop of rotation of the output shaft of the engine 10 is suppressed by driving the first MG 20, the engine 10 is immediately started in response to an engine restart request such as an IG-on operation by the driver. be able to. In this case, since the first MG 20 rotates in the forward rotation direction, the engine 10 is started without generating power.
- the vehicle according to the present embodiment when an IG-off operation is performed during traveling, and a predetermined condition in which input power is limited in battery 70 is satisfied.
- the SOC of the battery 70 can be reduced by consuming electric power in the first MG 20. Therefore, it is possible to relax the degree of restriction when charging power upper limit Win is restricted due to high SOC.
- the engine since the state in which the first MG 20 is rotated in the forward rotation direction is maintained, the engine can be started without generating power in the first MG 20 when the engine 10 is started by the driver's IG-on operation.
- the engine 10 can be started immediately in response to the driver's request. Therefore, it is possible to provide a vehicle and a vehicle control method for controlling the engine to a restartable state when an engine stop instruction is received during high-speed traveling. Furthermore, when starting the engine 10, it can avoid that the battery 70 is charged exceeding the charging power upper limit Win. Therefore, deterioration of the battery 70 can be prevented.
- the first MG 20 rotates in the negative rotation direction, and thus the positive rotation direction. In some cases, the first MG 20 generates power by generating torque. In this case, for example, before executing fuel cut control of engine 10, ECU 200 decelerates vehicle 1 using, for example, a braking device or the like, and when first MG 20 starts to rotate in the forward rotation direction, The first MG 20 may be controlled so that the torque of the first MG 20 is transmitted to the engine 10.
- the ECU 200 may move the rotation speed of the first MG 20 in the forward rotation direction while maintaining the power balance between the first MG 20 and the second MG 30 in a zero state.
- ECU 200 controls first MG 20 and second MG 30 so that the generated power is consumed in second MG 30 until rotation speed Nm 1 becomes zero in first MG 20.
- the ECU 200 may execute the fuel cut control of the engine 10 when the first MG 20 starts to rotate in the forward rotation direction, and may control the first MG 20 so that the torque of the first MG 20 is transmitted to the engine 10. .
- the ECU 200 desirably controls the first MG 20 so that the engine rotation speed Ne becomes a target value.
- the engine 10 can be started immediately when an IG-on operation is performed by the driver by setting the rotation speed equal to or higher than the rotation speed at which the initial explosion is possible.
- Win when Win is not narrowed down, the control of the first MG is not executed. Thereby, an increase in power consumption can be suppressed and deterioration of fuel consumption can be suppressed.
- ECU 200 may determine that a predetermined condition for limiting input power in battery 70 is satisfied when charging power upper limit value Win is lower than threshold value Win (0).
- ECU 200 is consumed in first MG 20 as the deviation between charge power upper limit Win and threshold Win (0) increases, for example, when charge power upper limit Win is lower than threshold Win (0).
- the first MG 20 may be controlled such that the power to be increased.
- the MG control unit 208 has a power consumption that is higher than the first value when the charging power upper limit value Win is the first value.
- the first MG 20 may be controlled to be larger than the power consumption when the value is 2.
- ECU 200 uses a second value (> SOC (0)) that is consumed when the SOC is the first value and the SOC is lower than the first value. ), The first MG 20 may be controlled to be larger than the power consumed.
- the ECU 200 uses a second value ( ⁇ TB) that is consumed when the battery temperature TB is the first value and the battery temperature is higher than the first value. (0)), the first MG 20 may be controlled so as to be larger than the power consumed.
- the ECU 200 consumes electric power consumed when the charging duration Tc is the first period in the second period (> Tc (0) shorter than the first period. )),
- the first MG 20 may be controlled to be larger than the power consumed.
- the ECU 200 changes the power consumption in proportion to the difference from the threshold when various parameters (Win, SOC, battery temperature TB, charging duration Tc) exceed the threshold.
- the power consumption may be changed stepwise in accordance with the magnitude of the difference from the threshold value.
- the vehicle 1 having the driving wheel 80 as the front wheel is shown as an example, but the driving method is not particularly limited thereto.
- the vehicle 1 may have a rear wheel as a driving wheel.
- the vehicle 1 may be a vehicle in which the second MG 30 in FIG. 1 is omitted.
- vehicle 1 may be a vehicle in which second MG 30 in FIG. 1 is coupled to a drive shaft for driving rear wheels instead of front wheel drive shaft 16.
- a speed change mechanism may be provided between drive shaft 16 and speed reducer 58 or between drive shaft 16 and second MG 30.
- the ECU 200 has been described as one ECU, but two or more ECUs may be used.
- the operation of ECU 200 in FIG. 1 may be shared between an engine ECU for controlling engine 10 and a hybrid ECU for controlling PCU 60.
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Abstract
Description
Claims (10)
- 駆動輪(80)を回転させるための駆動軸(16)と、
内燃機関(10)と、
第1回転電機(20)と、
前記第1回転電機(20)と電力を授受するための蓄電装置(70)と、
前記駆動軸(16)、前記内燃機関(10)の出力軸および前記第1回転電機(20)の回転軸の三要素の各々を機械的に連結し、前記三要素のうちのいずれか一つを反力要素とすることによって、他の2つの要素間での動力伝達が可能な動力伝達装置(40)と、
車両(1)のシステムの停止指示を運転者から受けるための入力部(150)と、
前記車両(1)の走行中に前記停止指示を前記入力部(150)に受けた場合であって、かつ、前記蓄電装置(70)において入力電力が制限される予め定められた条件が成立した場合に、前記内燃機関(10)の前記出力軸に前記第1回転電機(20)のトルクを伝達するように前記第1回転電機(20)を制御するための制御部(200)とを含む、車両。 - 前記第1回転電機(20)は、前記車両(1)の走行中に停止状態の前記内燃機関(10)を始動させる場合に発電する、請求項1に記載の車両。
- 前記制御部(200)は、前記車両(1)の走行中に前記停止指示を前記入力部(150)に受けた場合に前記内燃機関(10)への燃料噴射を停止するように前記内燃機関(10)を制御する、請求項1に記載の車両。
- 前記制御部(200)は、前記車両(1)の走行中に前記停止指示を前記入力部(150)に受けた場合であって、かつ、前記予め定められた条件が成立した場合に、前記入力電力の制限の程度が大きくなるほど、前記第1回転電機(20)において消費される電力が大きくなるように前記第1回転電機(20)を制御する、請求項1に記載の車両。
- 前記予め定められた条件は、前記蓄電装置(70)の残容量がしきい値よりも高いという条件を含む、請求項1に記載の車両。
- 前記予め定められた条件は、前記蓄電装置(70)の温度がしきい値よりも低いという条件を含む、請求項1に記載の車両。
- 前記予め定められた条件は、前記蓄電装置(70)の充電継続時間が所定時間を越えているという条件を含む、請求項1に記載の車両。
- 前記車両(1)は、前記駆動軸(16)に回転軸が連結される第2回転電機(30)をさらに含み、
前記制御部(200)は、前記車両(1)の走行中に前記停止指示を前記入力部(150)に受けた場合であって、かつ、前記予め定められた条件が成立した場合に、前記第1回転電機(20)の前記トルクに対する反力が発生するように前記第2回転電機(30)を制御する、請求項1に記載の車両。 - 前記動力伝達装置(40)は、サンギヤ(50)と、ピニオンギヤ(52)と、キャリア(54)と、リングギヤ(56)とを有する遊星歯車機構であって、
前記サンギヤ(50)は、前記第1回転電機(20)の前記回転軸に連結され、
前記キャリア(54)は、前記内燃機関(10)の前記出力軸に連結され、
前記リングギヤ(56)は、前記駆動軸(16)に連結される、請求項1~8のいずれかに記載の車両。 - 駆動輪(80)を回転させるための駆動軸(16)と、内燃機関(10)と、回転電機(20)と、前記回転電機(20)と電力を授受するための蓄電装置(70)と、前記駆動軸(16)、前記内燃機関(10)の出力軸および前記回転電機(20)の回転軸の三要素の各々を機械的に連結し、前記三要素のうちのいずれか一つを反力要素とすることによって、他の2つの要素間での動力伝達が可能な動力伝達装置(40)とを含む車両(1)に用いられる車両用制御方法であって、
前記車両(1)のシステムの停止指示を運転者から受けたか否かを判定するステップと、
前記車両(1)の走行中に前記停止指示を受けた場合であって、かつ、前記蓄電装置(70)において入力電力が制限される予め定められた条件が成立した場合に、前記内燃機関(10)の前記出力軸に前記回転電機(20)のトルクが伝達するように前記車両(1)を制御するステップとを含む、車両用制御方法。
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2020044967A (ja) * | 2018-09-19 | 2020-03-26 | トヨタ自動車株式会社 | ハイブリッド車両の制御装置 |
JP7107124B2 (ja) | 2018-09-19 | 2022-07-27 | トヨタ自動車株式会社 | ハイブリッド車両の制御装置 |
Also Published As
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US9254834B2 (en) | 2016-02-09 |
CN103328292B (zh) | 2015-08-26 |
EP2669129A4 (en) | 2014-02-26 |
JP5598555B2 (ja) | 2014-10-01 |
EP2669129A1 (en) | 2013-12-04 |
CN103328292A (zh) | 2013-09-25 |
EP2669129B1 (en) | 2014-10-08 |
US20130297131A1 (en) | 2013-11-07 |
JPWO2012101796A1 (ja) | 2014-06-30 |
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