WO2013114550A1 - 車両用駆動装置 - Google Patents
車両用駆動装置 Download PDFInfo
- Publication number
- WO2013114550A1 WO2013114550A1 PCT/JP2012/052048 JP2012052048W WO2013114550A1 WO 2013114550 A1 WO2013114550 A1 WO 2013114550A1 JP 2012052048 W JP2012052048 W JP 2012052048W WO 2013114550 A1 WO2013114550 A1 WO 2013114550A1
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- WIPO (PCT)
- Prior art keywords
- rotating electrical
- electrical machine
- prime mover
- vehicle
- operating point
- Prior art date
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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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
-
- 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
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/724—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
- B60L2240/486—Operating parameters
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
- 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
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a vehicle drive device.
- Patent Document 1 discloses a technique for maximizing the range of a hybrid vehicle that has two electric machines and operates in an electric vehicle operation state.
- Patent Document 1 discloses a technique of traveling by generating traction torque in two electric machines.
- An object of the present invention is to provide a vehicle drive device that can improve efficiency when traveling using two prime movers connected to a differential mechanism as a power source.
- the vehicle drive device of the present invention includes a first prime mover, a second prime mover, a first rotational element to which the first prime mover is connected, a second rotational element to which the second prime mover is connected, and a drive wheel.
- An area that cannot be selected as the target control amount is defined in the range of the control amount that can be output from one of the first prime mover and the second prime mover.
- a plurality of areas that cannot be selected as the target control amount are determined and are discontinuous with each other.
- a plurality of control amounts that can be selected as target control amounts for the one prime mover are discretely determined within a range of control amounts that can be output by the one prime mover.
- the vehicle drive device it is preferable to determine a target control amount of the other prime mover so as to realize a required output for the vehicle.
- the change in the control amount of the other prime mover is prohibited while the control amount of either the first prime mover or the second prime mover is changed.
- control amount of the one prime mover is changed to the target control amount before the control amount of the other prime mover, based on a required output to the vehicle.
- each of the first prime mover and the second prime mover is a rotating electric machine, and when a deceleration request is made to the vehicle, one of the first prime mover and the second prime mover having a larger inertia It is preferable to change the control amount of the prime mover with priority.
- each of the first prime mover and the second prime mover is a rotating electric machine, and when the vehicle is requested to decelerate, if the vehicle speed is high, the first prime mover and the second prime mover Of the first prime mover and the second prime mover, the control amount of the prime mover with the smaller inertia is preferentially changed. It is preferable.
- control amount in which a region that cannot be selected as the target control amount among the plurality of control amounts of the one prime mover is determined is at least one of torque and rotation speed.
- the vehicle drive device includes a first prime mover, a second prime mover, a first rotational element connected to the first prime mover, a second rotational element connected to the second prime mover, and a drive wheel connected And a differential mechanism having a third rotating element.
- the first rotating element and the second rotating element are on different sides with the third rotating element interposed therebetween.
- An area that cannot be selected as the target control amount is defined in the range of the control amount that can be output by one of the first prime mover and the second prime mover. According to the vehicle drive device of the present invention, it is possible to improve the efficiency when traveling using the two prime movers connected to the differential mechanism as a power source.
- FIG. 1 is a flowchart showing the operation of the vehicle drive device according to the embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram of the vehicle according to the embodiment.
- FIG. 3 is a diagram showing an example of the configuration of the planetary gear mechanism and connection with each rotating electric machine.
- FIG. 4 is a collinear diagram of the planetary gear mechanism.
- FIG. 5 is a diagram illustrating an operation image of each rotating element in the vehicle drive device of the embodiment.
- FIG. 6 is a diagram for explaining a method of selecting an operating point of the second rotating electrical machine.
- FIG. 7 is a diagram for explaining a method of selecting an operating point of the first rotating electrical machine.
- FIG. 8 is a diagram for explaining the threshold value of the rotational speed difference.
- FIG. 1 is a flowchart showing the operation of the vehicle drive device 1-1 according to the embodiment of the present invention
- FIG. 2 is a schematic configuration diagram of the vehicle 100 according to the embodiment.
- a vehicle 100 shown in FIG. 2 includes a first rotating electrical machine MG1, a second rotating electrical machine MG2, a planetary gear mechanism 10, an output gear 20, a differential gear 30, a drive shaft 31, a drive wheel 32, and an ECU 50.
- the vehicle 100 is, for example, an electric vehicle (EV) that can travel using the first rotating electrical machine MG1 and the second rotating electrical machine MG2 as power sources.
- Vehicle 100 may be a hybrid vehicle that further includes an engine as a power source.
- the vehicle drive device 1-1 includes a first rotating electrical machine MG1, a second rotating electrical machine MG2, and a planetary gear mechanism 10.
- the vehicle drive device 1-1 may further include an ECU 50.
- the first rotating electrical machine MG1 and the second rotating electrical machine MG2 each have a function as a motor (electric motor) and a function as a generator.
- the first rotating electrical machine MG1 and the second rotating electrical machine MG2 are connected to a battery via an inverter.
- the first rotating electrical machine MG1 and the second rotating electrical machine MG2 can convert the electric power supplied from the battery into mechanical power and output it, and are driven by the input power to convert the mechanical power into electric power. Can be converted.
- the electric power generated by the rotating electrical machines MG1 and MG2 can be stored in the battery.
- an AC synchronous motor generator can be used as the first rotating electrical machine MG1 and the second rotating electrical machine MG2.
- the first rotating electrical machine MG1 corresponds to the first prime mover
- the second rotating electrical machine MG2 corresponds to the second prime mover.
- another known prime mover for example, an engine
- another known prime mover for example, an engine
- the first prime mover and the second prime mover can be any prime movers capable of converting energy into rotational motion and outputting it.
- the engine is preferably provided with a starter such as a starter or can be started independently.
- the planetary gear mechanism 10 corresponds to a differential mechanism.
- FIG. 3 is a diagram showing an example of the configuration of the planetary gear mechanism 10 and the connection with the rotary electric machines MG1 and MG2.
- the planetary gear mechanism 10 is a single pinion type, and includes a sun gear 11, a pinion gear 12, a ring gear 13, and a carrier 14.
- the ring gear 13 is coaxial with the sun gear 11 and is disposed on the radially outer side of the sun gear 11.
- the pinion gear 12 is disposed between the sun gear 11 and the ring gear 13 and meshes with the sun gear 11 and the ring gear 13, respectively.
- the pinion gear 12 is rotatably supported by the carrier 14.
- the carrier 14 is rotatably supported on the same axis as the sun gear 11.
- the planetary gear mechanism 10 has three rotating elements: a sun gear 11, a carrier 14, and a ring gear 13.
- the sun gear 11 is connected to the first rotating electrical machine MG1 and rotates integrally with the rotor of the first rotating electrical machine MG1.
- the ring gear 13 is connected to the second rotating electrical machine MG2 and rotates integrally with the rotor of the second rotating electrical machine MG2.
- the carrier 14 is connected to the output gear 20 and rotates integrally with the output gear 20.
- the sun gear 11 corresponds to the first rotation element
- the ring gear 13 corresponds to the second rotation element
- the carrier 14 corresponds to the third rotation element.
- the output gear 20 meshes with the diff ring gear 30 a of the differential device 30.
- the differential device 30 is connected to drive wheels 32 via left and right drive shafts 31. That is, the carrier 14 is connected to the drive wheel 32 via the output gear 20, the differential device 30 and the drive shaft 31.
- the vehicle 100 is equipped with an ECU 50.
- the ECU 50 is an electronic control unit having a computer.
- the ECU 50 has a function as a control device that controls each part of the vehicle 100.
- the ECU 50 is connected to the first rotating electrical machine MG1 and the second rotating electrical machine MG2, and can control the first rotating electrical machine MG1 and the second rotating electrical machine MG2.
- the ECU 50 can also control the engine.
- FIG. 4 is a collinear diagram of the planetary gear mechanism 10.
- the left axis indicates the rotation speed of the sun gear 11 and the first rotating electrical machine MG1
- the central axis indicates the rotation speed of the carrier 14 and the output gear 20
- the right axis indicates the ring gear 13 and the second rotation.
- the rotation speed of the electric machine MG2 is shown.
- the carrier 14, that is, the third rotation element is located between the sun gear 11 and the ring gear 13 in the collinear diagram.
- the first rotating electrical machine MG1 and the sun gear 11 and the second rotating electrical machine MG2 and the ring gear 13 are located on different sides with the carrier 14 as the output shaft interposed therebetween.
- the vehicle drive device 1-1 can change the rotation speed of the first rotary electric machine MG1 and the rotation speed of the second rotary electric machine MG2 with respect to the same vehicle speed. It is a selection formula.
- the rotational speed of the first rotating electrical machine MG1 (hereinafter also simply referred to as “MG1 rotational speed”) and the rotational speed of the second rotating electrical machine MG2 (hereinafter simply referred to as “MG2 rotational speed”) with respect to the rotational speed of the carrier 14 requested by the vehicle. Can be selected while being related to each other.
- the ratio between the torque of the first rotating electrical machine MG1 (hereinafter also simply referred to as “MG1 torque”) and the torque of the second rotating electrical machine MG2 (hereinafter also simply referred to as “MG2 torque”) is unique. Determined.
- the torque ratio between the MG1 torque and the MG2 torque is determined by the gear ratio of the planetary gear mechanism 10. Specifically, when the gear ratio between the sun gear 11 and the carrier 14 is 1, and the gear ratio between the carrier 14 and the ring gear 13 is ⁇ , the torque sharing rate of the sun gear 11 is expressed by the following equation (1).
- the torque sharing rate of the ring gear 13 is expressed by the following formula (2).
- the MG1 torque to be output by the first rotating electrical machine MG1 and the MG2 torque to be output by the second rotating electrical machine MG2 are respectively determined based on the sharing ratio.
- the MG1 torque Tmg1 is determined by the following equation (3)
- the MG2 torque Tmg2 is determined by the following equation (4).
- Tmg1 Tout ⁇ ⁇ / (1 + ⁇ ) (3)
- Tmg2 Tout ⁇ 1 / (1 + ⁇ ) (4)
- one of the two rotating electrical machines MG1 and MG2 is operated at an operating point selected from several preset candidate points, and the detailed vehicle speed and driving force are Set by the other rotating electrical machine. That is, one rotary electric machine is stepped and the other rotary electric machine is linearly operated.
- FIG. 5 is a diagram showing an operation image of each rotating element in the vehicle drive device 1-1 of the present embodiment.
- the second rotating electrical machine MG2 is a rotating electrical machine that performs a step operation
- the first rotating electrical machine MG1 is a rotating electrical machine that realizes detailed vehicle speed and driving force.
- the inertia of the second rotating electrical machine MG2 is larger than the inertia of the first rotating electrical machine MG1. That is, in the present embodiment, the second rotating electrical machine MG2 with relatively heavy inertia is a rotating electrical machine that performs a step operation, and the first rotating electrical machine MG1 with relatively light inertia is a rotating electrical machine that performs a linear operation.
- the target control amount of the first rotating electrical machine MG1 that is, the target value of the rotational speed and torque of the first rotating electrical machine MG1, is determined to be a value capable of realizing the required output for the vehicle 100.
- the target control amount of the first rotating electrical machine MG1 is allowed to be arbitrarily determined within a range of control amounts that can be output by the first rotating electrical machine MG1.
- a plurality of candidate points are determined in advance as the selectable control amount points for the rotation speed of the second rotating electrical machine MG2. These candidate points are determined within the range of the number of rotations that can be output by the second rotating electrical machine MG2, and are discontinuous and discrete.
- the interval between adjacent candidate points is larger than the minimum step width when the rotation speed is continuously changed in the second rotating electrical machine MG2.
- the target rotational speed of the second rotating electrical machine MG2 is selected from the rotational speeds of the candidate points.
- a region other than the candidate points, for example, the rotational speed between the candidate points cannot be selected as the target rotational speed of the second rotating electrical machine MG2. That is, an area that cannot be selected as the target rotational speed is defined in the rotational speed range that can be output by the second rotating electrical machine MG2.
- the region that cannot be selected as the target rotation speed is determined discontinuously across the candidate points, and a plurality of regions that cannot be selected are determined.
- the target operating point of the second rotating electrical machine MG2 is selected from candidate operating points X1, X2, and X3 (see FIG. 6) described later. Therefore, an area that cannot be selected as the target torque is defined in the range of torque that can be output by the second rotating electrical machine MG2.
- an area that cannot be selected as the target control amount may not be determined for either the rotational speed or the torque of the second rotating electrical machine MG2. Further, instead of the second rotating electrical machine MG2, regarding the control amount of the first rotating electrical machine MG1, an area that cannot be selected as the target control amount may be defined in the controllable range of output.
- the second rotating electrical machine MG2 can function as a stepped transmission that changes the output rotational speed stepwise. it can.
- the target rotational speed of the first rotating electrical machine MG1 can be an arbitrary rotational speed. That is, the first rotating electrical machine MG1 can function as a continuously variable transmission (CVT) that continuously changes the output rotational speed.
- CVT continuously variable transmission
- the minimum change amount of the target rotation speed when the target rotation speed of the first rotary electric machine MG1 is changed is smaller than the minimum change amount of the target rotation speed when the target rotation speed of the second rotary electric machine MG2 is changed. Is also small.
- the vehicle drive device 1-1 When changing the operating point based on the required output to the vehicle 100, the vehicle drive device 1-1 sets the operating point of the second rotating electrical machine MG2 as the target operating point before the operating point of the first rotating electrical machine MG1. Move. That is, the control amount of the second rotating electrical machine MG2 is changed to the target control amount before the control amount of the first rotating electrical machine MG1.
- FIG. 6 is a diagram illustrating a method for selecting an operating point of the second rotating electrical machine MG2
- FIG. 7 is a diagram illustrating a method for selecting an operating point of the first rotating electrical machine MG1.
- the horizontal axis represents the rotational speed
- the vertical axis represents the torque.
- the forward rotation direction is the rotation direction of the carrier 14 and the output gear 20 when the vehicle 100 moves forward.
- broken lines P11, P12, P13, P14, P15, and P16 indicate equal power lines.
- broken lines P21, P22, P23, P24, P25, P26, P27, and P28 indicate equal power lines.
- Each equal power line connects operating points having the same power.
- the solid line 101 in FIG. 6 and the solid line 102 in FIG. 7 indicate optimum operation lines, respectively.
- the optimum operating line (hereinafter simply referred to as “MG2 optimum operating line”) 101 of the second rotating electrical machine MG2 connects operating points at which the second rotating electrical machine MG2 can be operated with high efficiency. .
- the MG2 optimum operation line 101 connects, for example, an operation point with the highest efficiency of the second rotating electrical machine MG2 on each of the equal power lines P11, P12, P13, P14, P15, and P16.
- Points X1, X2, and X3 on the MG2 optimum operation line 101 are predetermined candidate operation points.
- the target operating point of the second rotating electrical machine MG2 is selected from the candidate operating points X1, X2, and X3.
- operating points other than the candidate operating points X1, X2, and X3 are prohibited from being set as target operating points.
- it may be permitted to operate at operating points other than the candidate operating points X1, X2, and X3 in a transient state or the like.
- the optimum operating line (hereinafter simply referred to as “MG1 optimum operating line”) 102 of the first rotating electrical machine MG1 connects operating points at which the first rotating electrical machine MG1 can be operated with high efficiency. .
- the MG1 optimum operation line 102 connects, for example, the operation points with the highest efficiency of the first rotating electrical machine MG1 on the respective equal power lines P21, P22, P23, P24, P25, P26, P27, and P28.
- the ECU50 determines the target operating point of 2nd rotary electric machine MG2, for example so that it may demonstrate below. For example, the ECU 50 calculates the required power for the vehicle 100 based on the accelerator opening and the vehicle speed. The required torque value Tout output from the carrier 14 can be calculated based on the required power, the wheel rotation speed, and the reduction ratio from the carrier 14 to the drive wheel 32. The ECU 50 determines the MG2 torque Tmg2 from the torque request value Tout based on the above equation (4).
- the ECU 50 selects a target operating point from the candidate operating points X1, X2, and X3 based on the determined MG2 torque Tmg2. For example, the ECU 50 can select a candidate operating point having a minimum torque difference from the determined MG2 torque Tmg2 and a small rotational speed difference from the current MG2 rotational speed as a target operating point. Alternatively, the ECU 50 can select a candidate operating point X1, X2, X3 having the smallest rotational speed difference from the current MG2 rotational speed as the target operating point. Alternatively, the ECU 50 can select a candidate operating point with the smallest power difference between the determined MG2 torque Tmg2 and the equal power line corresponding to the predetermined rotational speed as the target operating point.
- the predetermined number of revolutions may be, for example, the current MG2 number of revolutions, the number of revolutions of the carrier 14, the number of revolutions of the carrier 14 that is predetermined for the number of revolutions of the carrier 14.
- the ECU 50 selects a candidate operating point X1, X2, or X3 having the smallest difference in rotational speed from the current MG2 rotational speed as a target operating point from among those having a small torque difference from the determined MG2 torque Tmg2. can do.
- the inertia loss when moving the operating point of the second rotating electrical machine MG2 can be reduced.
- the current operating point is selected again as the target operating point. There are many things to do. As a result, the degree of fluctuation of the operating point of the second rotating electrical machine MG2 is reduced, and inertia loss is reduced.
- ECU50 controls 2nd rotary electric machine MG2 based on the determined target operating point of 2nd rotary electric machine MG2.
- the ECU 50 causes the second rotating electrical machine MG2 to constantly operate at the target operating point.
- the ECU 50 determines the operating point of the first rotating electrical machine MG1 based on the target operating point or actual operating point of the second rotating electrical machine MG2 and the request for the vehicle 100. For example, the ECU 50 calculates the target MG1 torque Tmg1 of the first rotating electrical machine MG1 by the above formula (3) based on the required torque value Tout. Further, the MG1 rotational speed is determined based on the vehicle speed and the MG2 rotational speed. The ECU 50 sets the operation point determined by the determined MG1 rotation speed and the MG1 torque Tmg1 targeted by the first rotating electrical machine MG1 as a temporary target operation point.
- the ECU 50 can, for example, use the temporary target operating point as it is as the target operating point of the first rotating electrical machine MG1.
- a point in the vicinity of the temporary target operating point on the MG1 optimum operating line 102 may be set as the target operating point of the first rotating electrical machine MG1.
- the ECU 50 may set the operation point on the MG1 optimum operation line 102 that can realize the torque request value Tout as the target operation point of the first rotating electrical machine MG1.
- FIG. 7 shows an example of target operation points Y1, Y2, Y3 of the first rotating electrical machine MG1 corresponding to the candidate operation points X1, X2, X3 of FIG.
- the candidate operating point X1 is set as the target operating point of the second rotating electrical machine MG2
- the target operating point of the first rotating electrical machine MG1 is the operating point indicated by Y1.
- the recommended operation region R1 of the first rotating electrical machine MG1 is set.
- the recommended operation region R1 is defined as a region in the vicinity of the MG1 optimum operation line 102.
- the recommended operation region R1 is a rectangular region, but the shape is not limited to this.
- the recommended operation region R1 may be defined as a set of operation points at which the efficiency of the first rotating electrical machine MG1 is equal to or greater than a predetermined value.
- the ECU 50 may reselect the target operating point of the second rotating electrical machine MG2, for example, when the determined target operating point of the first rotating electrical machine MG1 is not the operating point in the recommended operating region R1. For example, when the determined target operating point of the first rotating electrical machine MG1 is out of the low speed side with respect to the recommended operating region R1, the target rotational speed of the first rotating electrical machine MG1 can be set to a higher speed. Then, the target operating point of the second rotating electrical machine MG2 is reselected. For example, among candidate operation points X1, X2, and X3, a candidate operation point on the lower rotation side than the previous target operation point of the second rotating electrical machine MG2 is selected as a new target operation point.
- the control flow shown in FIG. 1 is executed while the vehicle 100 is stopped or traveling, and is repeatedly executed at predetermined intervals, for example.
- step S1 the ECU 50 determines whether or not there is a change in the vehicle request output.
- step S1 it is determined whether or not a change in vehicle request output has occurred that changes the operating point of rotating electrical machines MG1 and MG2.
- the ECU 50 performs the determination in step S1 based on, for example, changes in required power, required driving force, required torque, etc. for the vehicle 100. For example, an affirmative determination may be made in step S1 when the amount of change in the required output for the vehicle 100 is greater than or equal to a predetermined value.
- step S1-Y if it is determined that there is a change in the vehicle request output (step S1-Y), the process proceeds to step S2, and if not (step S1-N), the control flow ends.
- step S2 the ECU 50 determines whether or not the change in the vehicle request output in step S1 is an output UP request. In step S2, it is determined whether an acceleration request has been made. The ECU 50 can make an affirmative determination in step S ⁇ b> 2 when the change in the vehicle request output is a change to the side of accelerating the vehicle 100. As a result of the determination in step S2, if it is determined that an output UP request has been made (step S2-Y), the process proceeds to step S3. If not (step S2-N), the process proceeds to step S7.
- step S3 the ECU 50 determines whether the inertia is an output that can be handled by a small rotating electrical machine.
- the ECU 50 determines whether or not the required vehicle output can be realized by controlling the rotary electric machine having a small inertia, in this embodiment, the first rotary electric machine MG1. More specifically, the ECU 50 can realize a vehicle required output, for example, required power, by changing the operating point of the first rotating electrical machine MG1 while maintaining the operating point of the second rotating electrical machine MG2 at the current operating point. It is determined whether or not.
- the ECU50 determines whether the operating point of 1st rotary electric machine MG1 which can implement
- the allowable operation area may be, for example, an operation point area within the range of maximum torque and maximum rotation speed that can be output, and operation within a range of maximum torque and maximum rotation speed that is determined in advance from the viewpoint of efficiency and the like It may be a point area.
- step S3-Y if it is determined that the inertia is an output that can be handled by a small rotating electrical machine (step S3-Y), the process proceeds to step S4. If not (step S3-N), the process proceeds to step S3. Proceed to S8.
- step S4 the ECU 50 moves the operating point of the rotating electrical machine with a small inertia, that is, the first rotating electrical machine MG1.
- the ECU 50 moves the operating point of the first rotating electrical machine MG1 to the target operating point so as to realize the vehicle required output.
- step S5 the ECU 50 determines whether or not the target operating point has been reached.
- the ECU 50 determines whether or not the operating point of the first rotating electrical machine MG1 has reached a target operating point that can realize the vehicle required output.
- step S6 the process proceeds to step S6, and if not (step S5-N), the process proceeds to step S4.
- step S7 the ECU 50 determines whether or not the vehicle speed is equal to or higher than a threshold value.
- a deceleration request is made (step S2-N)
- the ECU 50 gives priority to regenerative power generation by a rotary electric machine with heavy inertia when the vehicle speed range is high, in the present embodiment, by the second rotary electric machine MG2.
- the rotation speed of 2nd rotary electric machine MG2 can be reduced.
- the ECU 50 gives priority to the regenerative power generation by the rotating electrical machine with light inertia, in the present embodiment, the first rotating electrical machine MG1 when the vehicle speed range is low. Thereby, the rotation speed of 1st rotary electric machine MG1 can be reduced. By reducing the MG1 rotation speed, when there is a re-acceleration request, acceleration can be achieved with high response by the first rotary electric machine MG1 having a light inertia.
- regenerative power generation by the first rotating electrical machine MG1 is prioritized, and fluctuations in the rotational speed of the second rotating electrical machine MG2 are suppressed, so that it is possible to aim at reducing the loss as a whole by the power for maintaining the rotation.
- the vehicle drive device 1-1 of the present embodiment it is possible to achieve both improvement in the regeneration amount and improvement in responsiveness during reacceleration.
- step S7 if it is determined that the vehicle speed is equal to or higher than the threshold value (step S7-Y), the process proceeds to step S8, and if not (step S7-N), the process proceeds to step S10.
- step S8 the ECU 50 moves the operating point of the large rotary electric machine, that is, the second rotary electric machine MG2.
- ECU 50 determines a target operating point of second rotating electrical machine MG2 based on the vehicle request output. For example, when a negative determination is made in step S3 and the process proceeds to step S8, the operating point of the second rotating electrical machine MG2 can be determined by the method described with reference to FIG.
- step S8 the vehicle request output is a deceleration request, and a negative torque is required for the second rotating electrical machine MG2.
- FIG. 6 shows the MG2 optimum operation line 101 and the candidate operation points X1, X2, and X3 when the MG2 torque is a positive torque, but the optimum operation line is similarly applied when the MG2 torque is a negative torque.
- candidate operating points are defined. Therefore, the ECU 50 can determine the target operating point of the second rotating electrical machine MG2 at the time of regeneration based on the optimum operating line and the candidate operating point for the negative torque. The ECU 50 moves the operating point of the second rotating electrical machine MG2 to the determined target operating point.
- step S8 is executed, the process proceeds to step S9.
- step S9 the ECU 50 determines whether or not the target operating point has been reached.
- the ECU 50 determines whether or not the operating point of the second rotating electrical machine MG2 has reached the target operating point. As a result of the determination, if it is determined that the target operating point has been reached (step S9-Y), the process proceeds to step S6, and if not (step S9-N), the process proceeds to step S8.
- step S10 the ECU 50 moves the operating point of the rotating electrical machine having a small inertia, that is, the first rotating electrical machine MG1.
- ECU 50 determines a target operating point of first rotating electrical machine MG1 based on the vehicle request output.
- FIG. 7 shows the MG1 optimum operation line 102 and the recommended operation region R1 when the MG1 torque is a positive torque.
- the optimum operation line and the recommendation are also obtained when the MG1 torque is a negative torque.
- An operating area is defined. Therefore, the ECU 50 can determine the target operating point of the first rotating electrical machine MG1 at the time of regeneration based on the optimum operating line and the recommended operating area for negative torque.
- the ECU 50 moves the operating point of the first rotating electrical machine MG1 to the target operating point.
- step S11 the ECU 50 determines whether or not the target operating point has been reached.
- the ECU 50 determines whether or not the operating point of the first rotating electrical machine MG1 has reached the target operating point based on the vehicle request output. As a result of the determination, if it is determined that the target operating point has been reached (step S11-Y), the process proceeds to step S6. If not (step S11-N), the process proceeds to step S10.
- step S6 the ECU 50 is moved to the combined maximum efficiency point at 2MG by each rotating electric machine.
- the ECU 50 operates the first rotating electrical machine MG1 and the second rotating electrical machine MG2 at an operating point at which the sum of the loss of the first rotating electrical machine MG1 and the loss of the second rotating electrical machine MG2 is minimized and the maximum efficiency is achieved by 2MG.
- step S6 the actual operating point can be moved to the operating point at which the maximum efficiency is achieved by 2MG by the feedback control described below.
- the ECU 50 moves the operating point of the second rotating electrical machine MG2 when the target operating point of the first rotating electrical machine MG1 reached in step S5 is an operating point outside the recommended operating region R1. Specifically, an operating point different from the current operating point of the second rotating electrical machine MG2 is selected again from the candidate operating points X1, X2, and X3 as the target operating point of the second rotating electrical machine MG2. This re-selection of the target operating point is such that the target operating point of the first rotating electrical machine MG1 determined based on the target operating point of the second rotating electrical machine MG2 after the reselection can be set as the operating point in the recommended operating region R1. It is desirable to be made.
- the target operating point of the first rotating electrical machine MG1 is determined again. Until the overall efficiency of the first rotating electrical machine MG1 and the second rotating electrical machine MG2 is optimized, reselection of the target operating point of the second rotating electrical machine MG2 and redetermination of the target operating point of the first rotating electrical machine MG1 are repeatedly performed. Can do.
- step S6 it is possible to move the operating points of the first rotating electrical machine MG1 and the second rotating electrical machine MG2 to the combined maximum efficiency point in the same manner.
- the combined efficiency of the two rotating electrical machines can be obtained from the efficiency at the current operating point of the first rotating electrical machine MG1 and the efficiency at the current operating point of the second rotating electrical machine MG2.
- the target operating points of the first rotating electrical machine MG1 and the second rotating electrical machine MG2 can be re-determined so that this efficiency can be the maximum efficiency with respect to the vehicle required output.
- an area that cannot be selected as the target control amount is defined in the range of the control amount that can be output by one of the rotating electrical machines.
- the degree of variation of the control amount of the rotating electrical machine can be reduced from the degree of variation of the control amount of the other rotating electrical machine.
- the degree of variation of the control amount can be, for example, the frequency of variation of the control amount, the ratio of the time during which the control amount is varied, the integrated value of the magnitude of variation of the control amount, or the like.
- the degree of variation in the control amount of the rotating electrical machine having a large inertia can be reduced from the degree of varying the control amount of a rotating electrical machine having a small inertia.
- By suppressing the fluctuation of the control amount of the rotary electric machine having a large inertia it can be expected that the effect of suppressing the inertia loss due to the fluctuation of the rotation is enhanced.
- the operating point of the rotating electrical machine that performs the step operation can be improved when the required change with respect to the vehicle 100 is changed over a certain level, thereby improving the response, for example, the initial response. That is, if the rotating electrical machine having a small inertia is operated when the required change with respect to the vehicle 100 is less than a certain value, the responsiveness to the required change can be improved.
- the rotational speed control accuracy is improved by using one rotary electric machine as a step operation and controlling the detailed vehicle speed by the other rotary electric machine.
- the control accuracy of the rotational speed is improved as compared with the case where the rotational speeds of the two rotary electric machines MG1 and MG2 are continuously changed.
- the vehicle drive device 1-1 of the present embodiment does not move the operating point of the other rotating electrical machine while moving the operating point of either the first rotating electrical machine MG1 or the second rotating electrical machine MG2. That is, while the control amount of one rotating electrical machine is changed, the change of the control amount of the other rotating electrical machine is prohibited.
- Loss can be reduced by moving only one rotating electric machine at a time. Further, it is possible to take a countermeasure against failure such as when the rotation speed sensor no longer shows a true value. For example, when the rotational speed sensor of the first rotating electrical machine MG1 no longer shows a true value, if the rotational speed of the first rotating electrical machine MG1 and the rotational speed of the second rotating electrical machine MG2 are changed simultaneously, the first rotation The actual rotational speed of the electric machine MG1 cannot be known. On the other hand, if only one of the two rotating electrical machines MG1 and MG2 is moved, the rotational speed of the first rotating electrical machine MG1 is calculated from the rotational speeds of the other rotating elements of the planetary gear mechanism 10. Is possible.
- the vehicle drive device 1-1 of the present embodiment responds to the acceleration request by preferentially moving the operating point of the rotating electrical machine with the lighter inertia.
- the vehicle drive device 1-1 preferentially changes the control amount of the rotating electrical machine having the smaller inertia.
- the increase in the vehicle required output can be output by the first rotary electric machine MG1 having a light inertia
- the vehicle required output is realized by the control of the first rotary electric machine MG1.
- the first rotating electrical machine MG1 and the second rotating electrical machine MG2 share the output in consideration of efficiency and the like.
- the operating point of the two rotating electrical machines MG1 and MG2 when a deceleration request is made, it is determined which operating point of the two rotating electrical machines MG1 and MG2 is to be preferentially moved based on the vehicle speed, but in response to the deceleration request regardless of the vehicle speed.
- the operating point of the second rotary electric machine MG2 having a large inertia may be moved preferentially.
- the planetary gear mechanism 10 may be a double pinion type.
- rotating electric machines MG1 and MG2 are connected to the sun gear and the carrier, respectively, and the ring gear serves as an output.
- the sun gear and the carrier are located at both ends, and the ring gear is located between them.
- the two rotating electrical machines MG1 and MG2 are connected to one planetary gear mechanism 10, but the differential mechanism to which the rotating electrical machines MG1 and MG2 are connected is not limited to this.
- the differential mechanism may be a complex planetary or a Ravigneaux planetary (for example, having four or five rotating elements) in which a plurality of planetary gear mechanisms are combined.
- the vehicle drive device 1-1 is configured to include two prime movers and a differential mechanism having three or more rotating elements, one for each of two different rotating elements among the plurality of rotating elements.
- a drive unit in which a prime mover is coupled and an output to a tire is coupled to one of the other rotating elements.
- the vehicle drive device 1-1 does not have a brake element that restricts the rotation of the rotating elements of the differential mechanism, and all the rotating elements can move freely.
- the differential mechanism when the rotation of any two rotating elements is determined, the rotation speeds of the remaining rotating elements are determined. Further, the rotating elements to which the two prime movers are connected are located on different sides with respect to the output on the alignment chart.
- the fourth rotating element is, for example, between the sun gear 11 (first rotating element) and the carrier 14 (third rotating element) or between the carrier 14 and the ring gear 13 (second rotating element). It may be located between them.
- the inertia of the second rotating electrical machine MG2 is larger than the inertia of the first rotating electrical machine MG1, but the present invention is not limited to this.
- FIG. 8 is a diagram for explaining the threshold value of the difference in rotational speed between the MG1 rotational speed and the MG2 rotational speed.
- FIG. 8 shows a case where the MG2 rotational speed is higher than the MG1 rotational speed.
- the rotational speed difference ⁇ N is an absolute value of the rotational speed difference between the MG1 rotational speed and the MG2 rotational speed.
- the ECU 50 prohibits the rotational speed difference ⁇ N from exceeding a predetermined threshold value.
- step S3 of the above embodiment when the target operating point of the first rotating electrical machine MG1 capable of realizing the vehicle required output is determined in step S3 of the above embodiment, the rotational speed difference between the MG1 rotational speed of the target operating point and the current MG2 rotational speed When ⁇ N is equal to or greater than the threshold value, the operation of the first rotating electrical machine MG1 at the target operating point can be prohibited.
- the ECU 50 makes a negative determination in step S3 that the control of the first rotating electrical machine MG1 cannot respond to the output UP request. Thereby, loss expansion due to differential rotation of the planetary gear mechanism 10 is suppressed.
- the torque difference between the MG1 torque and the MG2 torque may increase due to the movement of the operating point of the first rotating electrical machine MG1 or the operating point of the second rotating electrical machine MG2. Further, the movement of the operating point of the first rotating electrical machine MG1 or the operating point of the second rotating electrical machine MG2 increases the difference between the current supplied to the first rotating electrical machine MG1 and the current supplied to the second rotating electrical machine MG2, The difference between the consumed energy (for example, electric energy) of the first rotating electrical machine MG1 and the consumed energy of the second rotating electrical machine MG2 may be increased.
- the load factor difference between the rotating electrical machines MG1 and MG2 increases, the amount of heat generated by the rotating electrical machine with a high load increases.
- the ECU 50 prohibits the difference in load factor between rotating electrical machines MG1 and MG2 from exceeding a threshold value. For example, when the target operating point of the first rotating electrical machine MG1 capable of realizing the vehicle required output is determined in step S3 of the above embodiment, the load factor of the first rotating electrical machine MG1 at the target operating point and the current second rotating electrical machine When the difference from the load factor of MG2 is equal to or greater than the threshold value, the operation of the first rotating electrical machine MG1 at the target operating point can be prohibited. In this case, the ECU 50 makes a negative determination in step S3 that the control of the first rotating electrical machine MG1 cannot respond to the output UP request. Thereby, the load factor between rotating electrical machines MG1 and MG2 is averaged, and heat generation is suppressed.
- the operating points that can be selected as the target operating point of the second rotating electrical machine MG2 are a plurality of points that are discretely determined as the candidate operating points X1, X2, and X3. That is, the control amounts (number of rotations and torque) that can be selected as the target control amount of the second rotating electrical machine MG2 are determined as a plurality of points.
- the target control amount of the second rotating electrical machine MG2 may be selectable from a range of a constant control amount.
- the target rotational speed of the second rotating electrical machine MG2 may be selectable from a predetermined range including the current MG2 rotational speed, for example, a range of the current MG2 rotational speed ⁇ 200 rpm.
- the target rotational speed of the second rotating electrical machine MG2 may be selectable from a predetermined MG2 rotational speed range, for example, a range of 500 rpm to 600 rpm. The same applies to the MG2 torque.
- the candidate operation points X1, X2, and X3 of the second rotating electrical machine MG2 may be updated as appropriate based on learning or the like.
- the candidate operating points X1, X2, and X3 are updated as appropriate so that inertia loss due to movement of the operating points of the first rotating electrical machine MG1 and the second rotating electrical machine MG2 can be reduced based on the change pattern of the past required output. You may make it do.
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Abstract
Description
図1から図7を参照して、実施形態について説明する。本実施形態は、車両用駆動装置に関する。図1は、本発明の実施形態に係る車両用駆動装置1-1の動作を示すフローチャート、図2は、実施形態に係る車両100の概略構成図である。
1/(1+ρ)…(2)
Tmg2=Tout×1/(1+ρ)…(4)
実施形態の第1変形例について説明する。第一回転電機MG1の動作点あるいは第二回転電機MG2の動作点の移動により、MG1回転数とMG2回転数との回転数差が拡大することがある。MG1回転数とMG2回転数との回転数差が拡大すると、遊星歯車機構10の差回転による損失が大きくなる。本変形例では、車両用駆動装置1-1は、MG1回転数とMG2回転数との回転数差が一定以上となることを禁止する。
実施形態の第2変形例について説明する。上記実施形態では、第二回転電機MG2の目標動作点として選択可能な動作点は、候補動作点X1,X2,X3として離散的に定められた複数の点であった。つまり、第二回転電機MG2の目標制御量として選択可能な制御量(回転数、トルク)は、複数の点として定められていた。ここで、第二回転電機MG2の目標制御量は、一定の制御量の範囲から選択可能とされてもよい。
第二回転電機MG2の候補動作点X1,X2,X3は、学習等に基づいて適宜更新されてもよい。例えば、過去の要求出力の変化パターンに基づいて、第一回転電機MG1および第二回転電機MG2の動作点の移動によるイナーシャ損失を低減できるように、候補動作点X1,X2,X3が適宜更新されるようにしてもよい。
10 遊星歯車機構
11 サンギア
13 リングギア
14 キャリア
20 出力ギア
32 駆動輪
50 ECU
100 車両
101 MG2最適動作線
102 MG1最適動作線
MG1 第一回転電機
MG2 第二回転電機
R1 推奨動作領域
X1,X2,X3 候補動作点
Claims (10)
- 第一原動機と、
第二原動機と、
前記第一原動機が接続された第一回転要素と、前記第二原動機が接続された第二回転要素と、駆動輪が接続された第三回転要素とを有する差動機構と
を備え、
前記差動機構の共線図において、前記第一回転要素と前記第二回転要素とは前記第三回転要素を挟んで互いに異なる側にあり、
前記第一原動機および前記第二原動機のうち一方の原動機が出力可能な制御量の範囲には、目標制御量として選択できない領域が定められている
ことを特徴とする車両用駆動装置。 - 前記目標制御量として選択できない領域は複数定められており、かつ互いに不連続である
請求項1に記載の車両用駆動装置。 - 前記一方の原動機の目標制御量として選択可能な制御量は、前記一方の原動機が出力可能な制御量の範囲に離散的に複数点定められている
請求項1に記載の車両用駆動装置。 - 車両に対する要求出力を実現するように前記他方の原動機の目標制御量を決定する
請求項1に記載の車両用駆動装置。 - 前記第一原動機と前記第二原動機のいずれかの原動機の制御量を変化させる間、もう一方の原動機の制御量の変化を禁止する
請求項1から4のいずれか1項に記載の車両用駆動装置。 - 車両に対する要求出力に基づいて、前記他方の原動機の制御量よりも前記一方の原動機の制御量を先に目標制御量に変化させる
請求項5に記載の車両用駆動装置。 - 車両に対して加速要求がなされた場合、前記第一原動機および前記第二原動機のうちイナーシャが小さい方の原動機の制御量を優先して変化させる
請求項5に記載の車両用駆動装置。 - 前記第一原動機および前記第二原動機は、それぞれ回転電機であり、
車両に対して減速要求がなされた場合、前記第一原動機および前記第二原動機のうちイナーシャが大きい方の原動機の制御量を優先して変化させる
請求項5に記載の車両用駆動装置。 - 前記第一原動機および前記第二原動機は、それぞれ回転電機であり、
車両に対して減速要求がなされた場合、高車速であれば、前記第一原動機および前記第二原動機のうちイナーシャが大きい方の原動機の制御量を優先して変化させ、低車速であれば、前記第一原動機および前記第二原動機のうちイナーシャが小さい方の原動機の制御量を優先して変化させる
請求項5に記載の車両用駆動装置。 - 前記一方の原動機の複数の制御量のうち、目標制御量として選択できない領域が定められている制御量は、トルクあるいは回転数の少なくともいずれか一方である
請求項1に記載の車両用駆動装置。
Priority Applications (7)
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KR1020147020523A KR101631779B1 (ko) | 2012-01-30 | 2012-01-30 | 차량용 구동 장치 |
PCT/JP2012/052048 WO2013114550A1 (ja) | 2012-01-30 | 2012-01-30 | 車両用駆動装置 |
DE112012005785.6T DE112012005785B4 (de) | 2012-01-30 | 2012-01-30 | Antriebssystem für ein Fahrzeug |
RU2014131419/11A RU2572978C1 (ru) | 2012-01-30 | 2012-01-30 | Система привода для транспортного средства |
US14/374,348 US9724988B2 (en) | 2012-01-30 | 2012-01-30 | Drive system for vehicle |
CN201280067863.XA CN104066615B (zh) | 2012-01-30 | 2012-01-30 | 车辆用驱动装置 |
JP2013556108A JP5761382B2 (ja) | 2012-01-30 | 2012-01-30 | 車両用駆動装置 |
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PCT/JP2012/052048 WO2013114550A1 (ja) | 2012-01-30 | 2012-01-30 | 車両用駆動装置 |
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JP (1) | JP5761382B2 (ja) |
KR (1) | KR101631779B1 (ja) |
CN (1) | CN104066615B (ja) |
DE (1) | DE112012005785B4 (ja) |
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WO (1) | WO2013114550A1 (ja) |
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JP2018117409A (ja) * | 2017-01-16 | 2018-07-26 | 株式会社豊田中央研究所 | 電動車両の駆動装置 |
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US10738859B2 (en) * | 2015-11-24 | 2020-08-11 | Borgwarner Sweden Ab | Vehicle driveline system |
CN206938435U (zh) * | 2017-03-30 | 2018-01-30 | 上海尊阶士工程技术有限公司 | 一种动力***用混合动力、纯电动传动装置 |
DE102018222256A1 (de) * | 2018-12-19 | 2020-06-25 | Zf Friedrichshafen Ag | Anordnung zum Antrieb einer Fahrzeugachse und Verfahren zum Betreiben der Antriebsanordnung |
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- 2012-01-30 US US14/374,348 patent/US9724988B2/en active Active
- 2012-01-30 WO PCT/JP2012/052048 patent/WO2013114550A1/ja active Application Filing
- 2012-01-30 KR KR1020147020523A patent/KR101631779B1/ko active IP Right Grant
- 2012-01-30 RU RU2014131419/11A patent/RU2572978C1/ru active
- 2012-01-30 DE DE112012005785.6T patent/DE112012005785B4/de not_active Expired - Fee Related
- 2012-01-30 JP JP2013556108A patent/JP5761382B2/ja not_active Expired - Fee Related
- 2012-01-30 CN CN201280067863.XA patent/CN104066615B/zh not_active Expired - Fee Related
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JP2003052102A (ja) * | 2001-08-07 | 2003-02-21 | Jatco Ltd | パラレルハイブリッド車両 |
JP2003189690A (ja) * | 2001-12-20 | 2003-07-04 | Toyota Motor Corp | 複数の電動機を備えた電動機システム |
JP2003048439A (ja) * | 2002-05-07 | 2003-02-18 | Hitachi Ltd | ハイブリッド自動車の動力伝達装置 |
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Also Published As
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US20150025729A1 (en) | 2015-01-22 |
DE112012005785T5 (de) | 2014-10-30 |
RU2572978C1 (ru) | 2016-01-20 |
CN104066615A (zh) | 2014-09-24 |
JP5761382B2 (ja) | 2015-08-12 |
KR20140116137A (ko) | 2014-10-01 |
CN104066615B (zh) | 2016-08-31 |
US9724988B2 (en) | 2017-08-08 |
JPWO2013114550A1 (ja) | 2015-05-11 |
DE112012005785B4 (de) | 2021-06-17 |
KR101631779B1 (ko) | 2016-06-17 |
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