WO2014073294A1 - 車両の制御装置および車両 - Google Patents
車両の制御装置および車両 Download PDFInfo
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- WO2014073294A1 WO2014073294A1 PCT/JP2013/076798 JP2013076798W WO2014073294A1 WO 2014073294 A1 WO2014073294 A1 WO 2014073294A1 JP 2013076798 W JP2013076798 W JP 2013076798W WO 2014073294 A1 WO2014073294 A1 WO 2014073294A1
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- power
- vehicle
- mode
- generator
- electric power
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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
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- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- Y02T90/14—Plug-in electric 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/93—Conjoint control of different elements
Definitions
- the present invention relates to a vehicle control device and a vehicle including the same. More specifically, the present invention relates to control of a hybrid vehicle having an external terminal for supplying power to the outside.
- Patent Document 1 does not require the exchange of electric power between the generator and the battery during parking, and therefore drives the booster circuit that boosts the voltage of the battery and supplies it to the generator. A technique for stopping is disclosed.
- boost control when power is supplied to the outside of the vehicle when parking, if boost control is performed to ensure torque responsiveness in the same way as during travel, an electrical loss due to boosting the voltage may occur and fuel consumption may deteriorate. There is.
- An object of the present invention is to provide a technique for reducing electrical loss due to boosting when power is supplied to the outside of a vehicle.
- a vehicle includes a generator, a power storage device, an internal combustion engine used for running the vehicle and driving the power generator, power generated by the power generator, or power output from the power storage device.
- An electric circuit configured to output to the outside, a drive circuit for driving the generator, a voltage conversion device provided between the power storage device and the generator, and a control unit are provided.
- the control unit generates power in the generator by the internal combustion engine while the vehicle is parked, and supplies the generated power to the outside of the vehicle, or supplies power to the generator by the internal combustion engine while the vehicle is traveling.
- the vehicle is set to the second mode to be generated.
- the control unit limits the operation of the voltage converter in the first mode.
- control unit sets the voltage to be set on the drive circuit side in the first mode when the generator supplies the same power as that in the first mode in the second mode. Lower than voltage.
- control unit stops the step-up operation by the voltage converter in the first mode.
- the control unit causes the voltage converter to perform a boosting operation regardless of the power that the generator needs to generate.
- the control unit stops the step-up operation by the voltage converter when the power that the generator needs to generate is equal to or less than a predetermined value.
- the power that the generator needs to generate is The power obtained by subtracting the second power from the first power.
- the power that the generator needs to generate is , The sum of the first power and the second power.
- the power when the supply of the first power is requested from the outside of the vehicle, the power is not supplied from the power storage device to the outside of the vehicle, and the power is not supplied from the generator to the power storage device.
- the electric power that the generator needs to generate is the first electric power.
- the control unit causes the voltage converter to perform a boosting operation when the power that the generator needs to generate exceeds a predetermined value.
- the control unit When the voltage set on the drive circuit side by the boosting operation in the first mode is less than the upper limit value that can be boosted by the voltage converter, the control unit generates the voltage set on the drive circuit side in the second mode. The voltage is set lower than the voltage set on the drive circuit side by the boosting operation of the voltage converter when the machine supplies the same power as that in the first mode.
- the predetermined value is electric power that the generator can generate without boosting.
- a vehicle according to another aspect of the present invention includes a generator, a power storage device, an internal combustion engine used for running the vehicle and driving the power generator, power generated by the power generator, or power output from the power storage device.
- the electric circuit comprised so that it can output to the exterior of this, the voltage converter provided between the electrical storage apparatus and the generator, and a control part are provided.
- the control unit In the external power supply mode in which power is supplied to the outside of the vehicle while the vehicle is parked, the control unit is required to supply the first power from the outside of the vehicle, and supplies the first power from the power storage device to the outside of the vehicle. In that case, the voltage boosting operation by the voltage converter is stopped.
- a vehicle control device includes a generator, a power storage device, an internal combustion engine used for running the vehicle and driving the power generator, power generated by the power generator, or power output from the power storage device.
- a control device for a vehicle including an electric circuit configured to output the power to the outside of the vehicle, and a voltage conversion device provided between the power storage device and the generator.
- the control device includes a mode setting unit and a power control unit.
- the mode setting unit is a first mode in which electric power is generated by the internal combustion engine while the vehicle is parked and the generated electric power is supplied to the outside of the vehicle, or electric power is supplied to the generator by the internal combustion engine while the vehicle is traveling.
- the vehicle is set to the second mode for generating
- the power control unit limits the operation of the voltage conversion device in the first mode.
- FIG. 1 is an overall block diagram of a vehicle 1 according to a first embodiment of the present invention.
- FIG. 2 is a diagram illustrating a configuration of a boost converter included in FIG. 1. It is a figure showing the charge amount to the storage battery 70 with respect to SOC, and the discharge amount from the storage battery. It is the schematic which showed one structural example for charge and electric power feeding of the vehicle 1 according to Embodiment 1 of this invention. It is a functional block diagram of ECU contained in FIG. It is a figure for demonstrating the pressure
- FIG. 1 is an overall block diagram of a vehicle 1 according to the first embodiment of the present invention.
- a vehicle 1 includes an engine 10, 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 PCU (Power Control Unit) 60, air conditioner 65, storage battery 70, power converter 78, drive wheel 80, transmission 86, and ECU (Electronic Control Unit) 200.
- Transmission 86 includes drive shaft 16, power split device 40, speed reducer 58, and axle 82.
- Vehicle 1 travels with a driving force output from at least one of engine 10 and 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 for transmitting power from the engine 10 to the drive wheels 80 via the speed reducer 58.
- the other path is a path for transmitting power from the engine 10 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. First MG 20 generates power using the power of engine 10 divided by power split device 40. The electric power generated by the first MG 20 is supplied to the storage battery 70 or the second MG 30 via the PCU 60. Thereby, the storage battery 70 is charged. First MG 20 further receives electric power from storage battery 70 and rotates the crankshaft (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 drive motor. Second MG 30 applies driving force to drive wheels 80 using at least one of the electric power stored in storage battery 70 and the electric power generated by first MG 20. Second MG 30 further functions as a generator that generates electric power by regenerative braking. The electric power generated by the second MG 30 is supplied to the storage battery 70 via the PCU 60. Thereby, the storage battery 70 is charged.
- 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, a fuel injection device 104, an ignition device 105, an intake passage 112, and an exhaust passage 113.
- the fuel injection device 104 injects an appropriate amount of fuel into each cylinder at an appropriate time.
- the ignition device 105 has a plurality of spark plugs respectively associated with a plurality of cylinders. The ignition device 105 sparks the spark plugs of each cylinder at an appropriate ignition timing based on a control signal from the ECU 200.
- An air cleaner 112A, an air flow meter 112B, an intake air temperature sensor 112C, and an electronic throttle valve 112D are provided in the intake passage 112 of the engine 10.
- the air cleaner 112A captures dust from the intake air.
- the air flow meter 112 ⁇ / b> B detects an intake amount FA of air sucked into the engine 10.
- the intake air temperature sensor 112 ⁇ / b> C detects the temperature TA of air taken into the engine 10.
- the intake air temperature sensor 112 ⁇ / b> C transmits a signal indicating the detected air temperature TA to the ECU 200.
- the electronic throttle valve 112D includes a valve for adjusting the amount of air taken into the engine 10, a throttle motor that operates the valve based on a control signal TH from the ECU 200, and a throttle valve position sensor.
- the throttle valve position sensor detects the opening of the valve and transmits a signal indicating the opening to ECU 200.
- An air-fuel ratio sensor 113A, a three-way catalytic converter 113B, a catalyst temperature sensor 113C, and a silencer 113D are provided in the exhaust passage 113 of the engine 10.
- the three-way catalytic converter 113B is a catalyst that purifies the exhaust gas of the engine 10.
- the air-fuel ratio sensor 113A detects the air-fuel ratio (A / F) Raf using the exhaust gas introduced into the three-way catalytic converter 113B.
- the catalyst temperature sensor 113C detects the temperature Tc of the three-way catalytic converter 113B.
- the air-fuel ratio sensor 113A transmits a signal indicating the detected air-fuel ratio Raf to the ECU 200.
- the catalyst temperature sensor 113C transmits a signal indicating the temperature Tc of the three-way catalytic converter 113B to the ECU 200.
- An oxygen sensor may be used instead of the air-fuel ratio sensor 113A.
- the water temperature sensor 106 detects the temperature Tw of the cooling water flowing through the engine 10 (hereinafter referred to as the cooling water temperature Tw).
- the water temperature sensor 106 transmits a signal indicating the detected cooling water temperature Tw to the ECU 200.
- Knock sensor 144 detects knocking of engine 10 and transmits a signal KN indicating the detection to ECU 200.
- the engine speed sensor 11 detects the number of revolutions of the crankshaft of the engine 10 (hereinafter referred to as engine speed) Ne.
- the engine speed sensor 11 transmits a signal indicating the detected engine speed Ne to the ECU 200.
- the power split device 40 mechanically connects the three elements, which are the drive shaft 16 for rotating the drive wheels 80, the output shaft of the engine 10, and the rotation shaft of the first MG 20, to each other.
- 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, a pinion gear, a carrier, and a ring gear.
- the pinion gear meshes with each of the sun gear and the ring gear.
- the carrier supports the pinion gear so as to be able to rotate and is coupled to the crankshaft of the engine 10.
- the sun gear is connected to the rotation shaft of the first MG 20.
- the ring gear is connected 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. Furthermore, reduction gear 58 transmits 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 storage battery 70 into AC power for driving first MG 20 and second MG 30.
- PCU 60 includes a boost converter 62 and an inverter 64.
- Boost converter 62 and inverter 64 are controlled based on control signal S 2 from ECU 200.
- Boost converter 62 boosts the voltage of the DC power received from storage battery 70 or power converter 78 and outputs the boosted DC power to inverter 64.
- Inverter 64 converts the DC power output from boost converter 62 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 storage battery 70 or the electric power supplied from the outside.
- inverter 64 converts AC power generated in first MG 20 and / or second MG 30 into DC power, and outputs the DC power to boost converter 62.
- Boost converter 62 steps down the voltage of the DC power output from inverter 64 and outputs the stepped down DC power to storage battery 70. Thereby, storage battery 70 is charged using the electric power generated by first MG 20 and / or second MG 30.
- Boost converter 62 is provided between nodes N1, N1 'and nodes N2, N2'.
- a storage battery 70 and a power converter 78 are connected to the nodes N1 and N1 ′.
- An inverter 64 is connected to the nodes N2 and N2 ′.
- FIG. 2 shows a configuration of boost converter 62 included in FIG.
- Boost converter 62 includes power transistors Q1, Q2, diodes D1, D2, a reactor L, a capacitor C1, and a capacitor C2.
- Power transistors Q1, Q2 are connected in series between positive electrode line PL2 and negative electrode line NL.
- Diodes D1 and D2 are connected in antiparallel to power transistors Q1 and Q2, respectively.
- Reactor L is connected between a connection node of power transistors Q1, Q2 and positive electrode line PL1.
- power switching elements such as IGBTs (Insulated Gate Bipolar Transistors) and power MOSFETs (Metal Oxide Semiconductor Field-Effect Transistors) can be used as the power transistors Q1 and Q2.
- Boost converter 62 receives the supply of power from storage battery 70 or power conversion device 78, and boosts the voltage of positive line PL2 to the voltage of positive line PL1 or higher based on signal S2 from ECU 200. Specifically, boost converter 62 accumulates the current flowing when power transistor Q2 is turned on as magnetic field energy in reactor L, and releases the accumulated energy to positive line PL2 via diode D1 when power transistor Q2 is turned off. By doing so, the voltage of the positive electrode line PL2 can be adjusted to a voltage equal to or higher than the positive electrode line PL1.
- the capacitor C1 is connected between the positive electrode line PL1 and the negative electrode line NL, and smoothes voltage fluctuation between the positive electrode line PL1 and the negative electrode line NL.
- Capacitor C2 is connected between positive electrode line PL2 and negative electrode line NL, and smoothes voltage fluctuations between positive electrode line PL2 and negative electrode line NL.
- VH system voltage across the capacitor C2.
- the storage battery 70 is a power storage device and a rechargeable DC power source. Storage battery 70 is connected to PCU 60.
- a secondary battery such as a nickel metal hydride battery or a lithium ion battery can be used as the storage battery 70.
- the DC voltage of the storage battery 70 is, for example, about 200V.
- the storage battery 70 is not limited to a secondary battery, and may be a battery that can generate a DC voltage, such as a capacitor, a solar battery, or a fuel cell.
- SOC State Of Charge
- FIG. 3 is a diagram showing the charge amount to the storage battery 70 and the discharge amount from the storage battery 70 with respect to the SOC.
- the amount of charge and the amount of discharge to the storage battery 70 corresponding to the current SOC are determined according to the characteristic line CC shown in FIG. That is, when the SOC is higher than the predetermined value SC0, power is output from the storage battery 70. When the SOC is smaller than the predetermined value SC0, electric power is supplied to the storage battery 70. When the SOC is equal to predetermined value SC0, the current charge amount of storage battery 70 is maintained.
- the air conditioner 65 operates using the electric power of the storage battery 70.
- the air conditioner 65 is shown in FIG. 1 as an example of an auxiliary machine.
- the temperature sensor 156 detects the temperature TB of the storage battery 70.
- Current sensor 158 detects current IB of storage battery 70.
- Voltage sensor 160 detects voltage VB of storage battery 70. Temperature sensor 156 transmits a signal indicating temperature TB to 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 accelerator position sensor 162 detects the depression amount AP of an accelerator pedal (not shown).
- the accelerator position sensor 162 transmits a signal indicating the depression amount AP of the accelerator pedal to the ECU 200.
- 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.
- Second resolver 13 detects rotation speed Nm2 of 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 the vehicle speed based on the received rotational speed Nw.
- the ECU 200 may calculate the vehicle speed based on the rotation speed Nm2 of the second MG 30 instead of the rotation speed Nw.
- the power converter 78 converts AC power supplied from the external power supply 302 into DC power for charging the storage battery 70.
- Power conversion device 78 further supplies the DC power of storage battery 70 or the power generated by engine 10 and first MG 20 to the outside of the vehicle.
- the PCU 60 converts this AC power into DC power.
- the power converter 78 converts DC power from the PCU 60 into AC power.
- the power conversion device 78 can be realized by a single device capable of bidirectional power conversion between direct current and alternating current, for example. Or the power converter device 78 may be implement
- the power cable 300 is connected between the socket 84 of the vehicle 1 and the external power supply 302.
- the power cable 300 has a connector 310 connected to the socket 84. Power is supplied from the external power supply 302 to the power conversion device 78 via the power cable 300.
- the DC power of the storage battery 70 or the power generated by the engine 10 and the first MG 20 is supplied to the outside through the power converter 78 and the power cable 300.
- 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 further generates a control signal S2 for controlling PCU 60 and outputs the generated control signal S2 to PCU 60.
- ECU 200 further generates a control signal S3 for controlling power conversion device 78, and outputs the generated control signal S3 to power conversion device 78.
- the vehicle 1 further includes an IG switch 90 that is manually operated.
- the IG switch 90 inputs a start request and a stop request for the entire system of the vehicle 1 to the ECU 200.
- the position where the IG switch 90 is operated includes an IG off position, an IG on position, and a start position.
- the IG off position is a position for bringing the system to a stop state (Ready-OFF state).
- the IG on position is a position for bringing the system into an energized state (IG-ON state).
- the start position is a position for bringing the system into an activated state (Ready-ON state).
- IG switch 90 generates a signal IG for indicating each state of the system, and transmits the generated signal IG to ECU 200.
- the vehicle 1 further includes a parking switch 91 that is manually operated.
- the parking switch 91 is a switch for selecting a parking position among a plurality of shift positions. When the parking switch 91 is operated, the parking switch 91 transmits a signal PRK to the ECU 200.
- Parking switch 91 may be, for example, a push switch, a lever switch, a rotary switch, or the like.
- the plurality of shift positions include a neutral position, a forward travel position, and a reverse travel position in addition to the parking position. Shift positions other than the parking position are selected by the shift lever 92. Shift lever 92 transmits a signal indicating the selected shift position to ECU 200.
- the parking position may be selectable by a shift lever 92 instead of the parking switch 91.
- ECU 200 receives signal PRK from parking switch 91 and switches the shift position from the non-parking position to the parking position when the shift position is the non-parking position.
- the parking lock device 93 fixes the drive shaft 16 so that the drive shaft 16 does not move under the control of the ECU 200. Therefore, the movement of the vehicle 1 is limited.
- First MG 20 is arranged to generate electric power using at least a part of the power generated by engine 10. In other words, engine 10 is used for both traveling of vehicle 1 and driving of first MG 20.
- the ECU 200 controls the entire hybrid system so that the vehicle 1 can operate most efficiently by controlling the engine 10, the PCU 60, and the like. That is, ECU 200 controls charging and discharging of storage battery 70 and operations of engine 10, first MG 20 and second MG 30.
- ECU200 calculates the required driving force corresponding to the depression amount AP of the accelerator pedal. 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 stops only the second MG 30 while stopping the engine 10.
- 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 by the other power to generate electric power.
- ECU 200 drives second MG 30 using the generated electric power. Thereby, the second MG 30 assists in driving the drive wheels 80.
- the second MG 30 driven by the rotation of the drive wheel 80 functions as a generator, thereby performing regenerative braking.
- the electric power recovered by regenerative braking is stored in the storage battery 70.
- the ECU 200 increases the output of the engine 10 in order to increase the amount of power generated by the first MG 20. Thereby, the SOC of the storage battery 70 is increased.
- the ECU 200 may perform control to increase the driving force of the engine 10 as necessary even when the vehicle 1 is traveling at a low speed. For example, when the storage battery 70 needs to be charged, when an auxiliary machine such as the air conditioner 65 is driven, or when the temperature of the cooling water of the engine 10 is increased to a predetermined temperature, the ECU 200 increases the driving force of the engine 10. You may let them.
- the air conditioner 65 when the air conditioner 65 operates while the vehicle 1 is stopped, the electric power stored in the storage battery 70 is used when electric power is not supplied to the vehicle 1 from the outside.
- the ECU 200 causes the engine 10 to operate.
- the engine 10 drives the first MG 20, and the first MG 20 generates electric power.
- the electric power generated by the first MG 20 is supplied to the air conditioner 65 by the PCU 60 via the storage battery 70 or together with the storage battery 70. Therefore, not only can the operation of the air conditioner 65 be continued, but the storage battery 70 can also be charged.
- FIG. 4 is a schematic diagram showing one configuration example for charging and power feeding of vehicle 1 according to the first embodiment of the present invention.
- the power cable 300 includes a connector 310, a power line 304, a CCID (Charging Circuit Interrupt Device) 306, and a plug 308.
- Connector 310 is disposed at one end of power line 304.
- the plug 308 is disposed at the other end of the power line 304.
- the CCID 306 is provided in the middle of the power line 304.
- the connector 310 is connected to the socket 84 of the vehicle 1.
- the plug 308 is connected to the external power supply 302.
- the external power supply 302 is shown as a socket provided in the house 800.
- the CCID 306 functions as a circuit for switching between supply of electric power from the external power supply 302 to the vehicle 1 and interruption of the supply.
- the operation of the CCID 306 follows, for example, a standard defined by US SAE (Society of Automotive Engineers) or the Japan Electric Vehicle Association.
- Switches 312 and 314 are provided on the connector 310.
- the switches 312 and 314 are operated by the user.
- the switch 312 includes a mechanism for removing the connector 310 from the socket 84, for example.
- various types of control such as cutting off the supply of power by the CCID 306 may be performed.
- signal CNT is sent from connector 310 to ECU 200 via socket 84.
- the signal CNT is a signal indicating the connection between the connector 310 and the socket 84.
- Switch 314 is a switch for switching between charging of vehicle 1 (storage battery 70) and external power feeding.
- power cable 300 transmits power from external power supply 302 to vehicle 1.
- the vehicle 1 performs external power feeding.
- the first MG 20 is driven by the engine 10 to generate electric power.
- the electric power generated by the first MG 20 is supplied to the outside of the vehicle 1 through the electric power cable 300.
- the plug 301 may transmit a signal SW corresponding to the operation of the switch 314 to the ECU 200 of the vehicle 1. For example, when charging is selected, the signal SW is at a low level, and when external power feeding is selected, the signal SW is at a high level.
- ECU 200 transmits control signal S3 for controlling power conversion device 78 to power conversion device 78.
- the configuration of the power cable, the shape of the plug, etc. are not particularly limited.
- the plug 308 is connected to the socket of the house 800, and the vehicle 1 supplies power. Thereby, it becomes possible to supply electric power from the vehicle 1 to the electric equipment in the house 800. Further, in FIG. 4, the plug 308 of the power cable 300 and the power plug 710 of the electric device 700 are electrically connected via the adapter 720. Thereby, electric power can be supplied from the vehicle 1 to an individual electric device.
- the purpose of external power feeding is not particularly limited. As shown in FIG. 4, a concept has been studied in which power can be supplied from a vehicle to a general electric device outside the vehicle by using the vehicle as a power supply source.
- the vehicle 1 may be used as an emergency power source during a disaster such as an earthquake.
- the engine 10 can operate when the vehicle 1 is externally powered. It is necessary to prevent the vehicle 1 from moving during power feeding by the power generated by the engine 10. For this reason, in this embodiment, external power feeding is permitted when the parking switch is operating.
- FIG. 5 is a functional block diagram of ECU 200 shown in FIG.
- the functional blocks shown in FIG. 5 can be realized by both hardware and software.
- ECU 200 includes an electric power control unit 201, an engine control unit 202, and a mode setting unit 203.
- Engine control unit 202 receives outputs from various sensors (air-fuel ratio sensor 113A, air flow meter 112B, knock sensor 144, etc.) relating to engine 10.
- various sensors related to the engine 10 at least the air-fuel ratio sensor 113 ⁇ / b> A, the air flow meter 112 ⁇ / b> B, and the knock sensor 144 generate signals necessary for controlling the operation of the engine 10. More specifically, the air-fuel ratio sensor 113A, the air flow meter 112B, and the knock sensor 144 detect a physical quantity necessary for operating an actuator (not shown) included in the engine 10 and a signal indicating the detected physical quantity. Is output to the engine control unit 202.
- the engine control unit 202 generates a control signal S1 for controlling the engine 10 based on the outputs of various sensors.
- the engine control unit 202 outputs the generated control signal S1 to the engine 10.
- the mode setting unit 203 changes the current state to the traveling power generation mode or the external power feeding mode.
- the traveling power generation mode is a mode in which the engine 10 generates power in the first MG 20 while the vehicle 1 is traveling (corresponding to the second mode).
- the external power supply mode is a mode in which power is supplied to the outside of the vehicle 1 while the vehicle 1 is parked.
- the external power supply mode includes only the first external power supply mode.
- the first external power supply mode is a mode in which the engine 10 generates power in the first MG 20 while the vehicle 1 is parked and supplies the generated power to the outside (corresponding to the first mode).
- the external power supply mode includes the first external power supply mode and the second external power supply mode will be described.
- vehicle parking means that the shift position is selected as the parking position. In this state, the drive shaft 16 is prohibited from being driven by the operation of the parking switch 91. Therefore, the driving force of the vehicle is not generated.
- Vehicle stop is a state where the shift position is selected to a position other than the parking position and the vehicle is stopped by a brake.
- Vehicle travel is a state where the shift position is selected to a position other than the parking position. “Vehicle travel” includes “vehicle stop”.
- the power control unit 201 receives outputs from various sensors (such as the voltage sensor 160) for detecting the state of the storage battery 70. Based on the outputs of these sensors, the power control unit 201 generates a control signal S2 to control charging or discharging of the storage battery 70, for example, and transmits the generated control signal S2 to the PCU 60.
- various sensors such as the voltage sensor 160
- the power control unit 201 Based on the outputs of these sensors, the power control unit 201 generates a control signal S2 to control charging or discharging of the storage battery 70, for example, and transmits the generated control signal S2 to the PCU 60.
- the power control unit 201 generates a control signal S2 for controlling the boost converter 62 in the external power supply mode and the traveling power generation mode, and transmits the generated control signal S2 to the PCU 60.
- the power control unit 201 makes the system voltage VH in the first external power supply mode lower than the system voltage VH set when the first MG 20 supplies the same power as that in the external power supply mode in the traveling power generation mode.
- the power control unit 201 causes the boost converter 62 to perform a boost operation in the traveling power generation mode regardless of the power that the first MG 20 needs to generate.
- the power control unit 201 stops the boost operation by the boost converter 62 when the power that the first MG 20 needs to generate is equal to or less than the predetermined value A in the first external power supply mode.
- the power control unit 201 causes the boost converter 62 to perform a boost operation when the power that the first MG 20 needs to generate exceeds a predetermined value A in the first external power supply mode.
- the power control unit 201 sets the set system voltage VH to the first MG 20 in the traveling power generation mode. Is lower than the system voltage VH set by the boost operation of the boost converter 62 when the same power as that in the first external power supply mode is supplied.
- FIG. 6 is a diagram for explaining the boost control according to the first embodiment of the present invention.
- the horizontal axis represents the power P generated by the first MG 20.
- the vertical axis is the system voltage VH.
- the power P-VH characteristic PR1 represents the system voltage VH necessary for the first MG 20 to generate the power P.
- the characteristic PR1 when the power P is A (Kw) or less, the system voltage VH required to generate the power P is the voltage Vbat (for example, 200 V) of the storage battery 70, and boosting by the boost converter 62 is necessary. Absent.
- system voltage VH necessary for generating electric power P becomes larger than voltage Vbat of storage battery 70, so that boosting by boost converter 62 is necessary.
- the system voltage VH for the power P is set according to the characteristic PR1.
- the power P-VH characteristic PR2 is a system voltage VH required for the first MG 20 to generate the power P when the vehicle is stopped by a brake due to a red signal or the like and the first MG 20 is generating power in the traveling power generation mode. Represents. In this state, system voltage VH for power P is set according to characteristic PR2.
- the electric power generated by the first MG 20 is not sent to the second MG 30 and used for running the vehicle, and the power generation amount in the second MG 30 is zero or close to zero. Is determined by the power generation state of the first MG 20.
- the second MG 30 operates with the power generated by the first MG 20 or the power from the storage battery 70.
- the system voltage VH needs to be set to a voltage equal to or higher than the voltage determined by the characteristic PR2.
- the system voltage VH is set to a voltage determined by the characteristic PR2 (when the vehicle is stopped) or a voltage higher than a voltage determined by the characteristic PR2 (forward and backward).
- the system voltage VH represented by the characteristic PR1 is equal to the same required power P within the range less than the upper limit value Vp (for example, 650 V) that can be boosted by the boost converter 62. , Lower than the system voltage VH represented by the characteristic PR2.
- FIG. 7 is a flowchart showing a process for the vehicle according to the first embodiment to transition to the external power feeding mode.
- the process shown in this flowchart is called from the main routine at predetermined intervals, for example, and executed by ECU 200 (for example, mode setting unit 203).
- ECU 200 for example, mode setting unit 203.
- the transition to the external power supply mode also means the transition to the first external power supply mode.
- step ST1 based on signal IG, ECU 200 determines whether or not the entire system of vehicle 1 is in the IG-ON state. If it is determined that the system is in the IG-ON state (YES in step ST1), the process proceeds to step ST2. When it is determined that the system is in a state other than the IG-ON state (NO in step ST1), the entire process is returned to the main routine.
- step ST2 based on the signal PRK, the ECU 200 determines whether the parking position is selected. Since the engine 10 operates during external power feeding, it is necessary to regulate the movement of the vehicle 1. If it is determined that the parking position is selected (YES in step ST2), the process proceeds to step ST3. If it is determined that the parking position is not selected (NO in step ST2), the entire process is returned to the main routine.
- step ST3 based on the signal CNT, the ECU 200 determines whether or not the connector 310 of the power cable 300 is connected to the socket 84 of the vehicle 1. If it is determined that connector 310 is connected to socket 84 (YES in step ST3), the process proceeds to step ST4. When it is determined that connector 310 is not connected to socket 84 (NO in step ST3), the entire process is returned to the main routine.
- step ST4 based on the signal SW, the ECU 200 determines whether or not the switch 314 of the connector 310 is turned on. “Switch 314 is turned on” means that external power feeding is selected by switch 314. If it is determined that switch 314 is on (YES in step ST4), the process proceeds to step ST5. When it is determined that switch 314 is off (NO in step ST4), the entire process is returned to the main routine. “Switch 314 is off” means that charging of vehicle 1 is selected by switch 314.
- step ST5 the ECU 200 shifts the vehicle 1 to the external power feeding mode.
- the processes in steps ST1 to ST5 are processes for detecting whether or not the state of the vehicle 1 is a power generation enabled state.
- the power generation enabled state means a state where the vehicle 1 is parked and the first MG 20 can generate electric power by driving the engine 10.
- the system of the vehicle 1 is in an energized state and the vehicle 1 is parked.
- the connector 310 of the power cable 300 is connected to the socket of the vehicle 1 and external power feeding is selected, a power generation possible state is detected. In this case, the vehicle 1 transitions to the external power supply mode.
- FIG. 8 is a flowchart showing a process for the vehicle according to the first embodiment of the present invention to transit to the traveling power generation mode.
- the process shown in this flowchart is called from the main routine at predetermined intervals, for example, and executed by ECU 200 (for example, mode setting unit 203).
- step ST41 based on signal IG, ECU 200 determines whether or not the entire system of vehicle 1 is in the IG-ON state. If it is determined that the system is in the IG-ON state (YES in step ST41), the process proceeds to step ST42. When it is determined that the system is in a state other than the IG-ON state (NO in step ST41), the entire process is returned to the main routine.
- step ST42 based on the signal PRK, the ECU 200 determines whether or not a shift position other than the parking position is selected. If it is determined that a position other than the parking position is selected (YES in step ST42), the process proceeds to step ST43. When it is determined that the parking position is selected (NO in step ST42), the entire process is returned to the main routine.
- step ST43 the ECU 200 determines whether power generation in the first MG 20 is necessary.
- the case where power generation in the first MG 20 is necessary is, for example, when the storage battery 70 needs to be charged, when supplying power to the second MG 30 and assisting the second MG 30 to drive the drive wheels 80, the air conditioner 65 For example, when power is supplied to the battery.
- step ST43 If it is determined that power generation in first MG 20 is necessary (YES in step ST43), the process proceeds to step ST44. On the other hand, when it is determined that power generation in first MG 20 is unnecessary (NO in step ST43), the entire process is returned to the main routine.
- step ST44 the ECU 200 changes the vehicle to the traveling power generation mode. That is, the vehicle 1 transitions to a mode in which the first MG 20 generates electric power using the power of the engine 10 divided by the power split device 40.
- FIG. 9 is a flowchart for illustrating boost control of boost converter 62 according to the first embodiment of the present invention. The process of this flowchart is called from the main routine and executed by the ECU 200 at predetermined intervals, for example.
- ECU 200 determines whether or not the current state of vehicle 1 is the external power feeding mode. For example, the ECU 200 stores information indicating that the processing shown in FIG. 7 has been executed. Based on this information, it is determined whether or not the current state of the vehicle 1 is the external power supply mode. Alternatively, ECU 200 may detect that vehicle 1 is actually performing external power feeding.
- step ST11 If it is determined that the current state is the external power supply mode (YES in step ST11), the process proceeds to step ST14.
- step ST12 ECU 200 determines whether the current state of vehicle 1 is the traveling power generation mode. To do. For example, the ECU 200 stores information indicating that the processing shown in FIG. 8 has been executed. Based on this information, it is determined whether or not the current state of the vehicle 1 is the traveling power generation mode.
- step ST12 If it is determined that the current state is the traveling power generation mode (YES in step ST12), the process proceeds to step ST13. On the other hand, when it is determined that the current state of vehicle 1 is different from the traveling power generation mode (NO in step ST12), the entire process is returned to the main routine.
- step ST13 the ECU 200 generates a signal S2 for causing the system voltage VH to be equal to or higher than the voltage represented by the power-VH characteristic PR2 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62. That is, boost converter 62 performs a boost operation regardless of the power that first MG 20 needs to generate in the traveling power generation mode.
- step ST14 the ECU 200 determines whether or not the electric power P, which is requested from the outside and needs to be generated by the first MG 20, is equal to or lower than the electric power A that can be generated without boosting the first MG 20.
- step ST14 If it is determined that the power P is equal to or lower than the power A (YES in step ST14), the process proceeds to step ST16.
- step ST16 the ECU 200 generates a signal S2 for causing the boost converter 62 to stop the boost operation, and sends the generated signal S2 to the boost converter 62.
- step ST14 when it is determined that the power P exceeds the power A (NO in step ST14), the process proceeds to step ST15.
- step ST15 the ECU 200 generates a signal S2 for setting the system voltage VH to a voltage represented by the power-VH characteristic PR1 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62.
- the present embodiment when the first MG can generate power without increasing pressure in the external power supply mode, considering that there is no need to increase torque response as in the traveling power generation mode, Since the boosting operation by the boosting converter is stopped, electrical loss due to boosting can be reduced.
- the external power supply mode includes only the first external power supply mode.
- the external power supply mode includes a first external power supply mode and a second external power supply mode.
- the first external power supply mode is the same as that described in the first embodiment, and is a mode in which the engine 1 generates power in the first MG 20 while the vehicle 1 is parked and supplies the generated power to the outside ( Corresponding to the first mode).
- the second external power supply mode is a mode in which the power of the storage battery 70 is supplied to the outside while the vehicle is parked, and the first MG 20 does not generate power.
- the first MG 20 needs to generate power depending on whether the storage battery 70 is charged, discharged from the storage battery 70, or the charge amount of the storage battery 70 is maintained. The fact that certain power is different will also be explained.
- FIG. 10 is a flowchart for illustrating the boost control of boost converter 62 according to the second embodiment of the present invention. The process of this flowchart is called from the main routine and executed by the ECU 200 at predetermined intervals, for example.
- step ST20 when it is determined that the current state is the external power supply mode (YES in step ST20), the process proceeds to step ST23.
- step ST21 ECU 200 determines whether the current state of vehicle 1 is the traveling power generation mode. To do.
- step ST21 If it is determined that the current state is the traveling power generation mode (YES in step ST21), the process proceeds to step ST22.
- step ST22 the ECU 200 generates a signal S2 such that the system voltage VH is equal to or higher than the voltage represented by the power-VH characteristic PR2 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62. That is, boost converter 62 performs a boost operation regardless of the power that first MG 20 needs to generate in the traveling power generation mode.
- step ST23 the ECU 200 acquires information about the electric power P1 that is requested externally.
- step ST24 the ECU 200 determines whether the storage battery 70 should be discharged, charged, or maintained in the current state in view of the current SOC based on the characteristic line CC shown in FIG. .
- the process proceeds to step ST26.
- step ST26 the ECU 200 specifies the supply power (discharge amount) P2 from the storage battery 70 based on the characteristic straight line CC shown in FIG.
- step ST27 the ECU 200 compares the required power P1 with the discharge amount P2.
- step ST27 If it is determined that the required power P1 is less than or equal to the discharge amount P2 (YES in step ST27), the process proceeds to step ST28. On the other hand, when it is determined that required power P1 exceeds discharge amount P1 (NO in step ST27), the process proceeds to step ST31.
- step ST28 the ECU 200 causes the vehicle 1 to transition to the second external power supply mode.
- step ST29 the ECU 200 generates a signal S2 for causing the boost converter 62 to stop the boost operation, and sends the generated signal S2 to the boost converter 62.
- step ST30 the ECU 200 generates a signal S1 for stopping the engine 10, and sends the generated signal S1 to the engine.
- step ST31 the ECU 200 subtracts the discharge amount P2 from the required power P1, and sets the subtracted power as the power P that should be generated by the first MG 20.
- step ST32 the ECU 200 causes the vehicle 1 to transition to the first external power feeding mode.
- step ST33 the ECU 200 determines whether or not the power P to be generated by the first MG 20 is equal to or lower than the power A that can be generated without boosting the first MG 20.
- step ST33 If it is determined that power P is equal to or lower than power A (YES in step ST33), the process proceeds to step ST34.
- step ST34 the ECU 200 generates a signal S2 for causing the boost converter 62 to stop the boost operation, and sends the generated signal S2 to the boost converter 62.
- step ST33 when it is determined that the power P exceeds the power A (NO in step ST33), the process proceeds to step ST35.
- step ST35 the ECU 200 generates a signal S2 for setting the system voltage VH to a voltage represented by the power-VH characteristic PR1 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62.
- step ST25 that is, if it is not determined that the storage battery 70 should be discharged and if it is determined that the storage battery 70 should be charged (YES in step ST36), the process proceeds to step ST37. On the other hand, when it is not determined that storage battery 70 should be charged (NO in step ST36), the process proceeds to step ST39.
- step ST37 the ECU 200 specifies the supply power (charge amount) P3 to the storage battery 70.
- step ST38 the ECU 200 adds the required power P1 and the charge amount P3, and sets the added power as the power P that should be generated by the first MG 20.
- step ST32 the ECU 200 causes the vehicle 1 to transition to the first external power feeding mode.
- step ST33 the ECU 200 determines whether or not the power P to be generated by the first MG 20 is equal to or lower than the power A that can be generated without boosting the first MG 20.
- step ST33 If it is determined that power P is equal to or lower than power A (YES in step ST33), the process proceeds to step ST34.
- step ST34 the ECU 200 generates a signal S2 for causing the boost converter 62 to stop the boost operation, and sends the generated signal S2 to the boost converter 62.
- step S33 when it is determined that the power P exceeds the power A (NO in step S33), the process proceeds to step ST35.
- step ST35 the ECU 200 generates a signal S2 for setting the system voltage VH to a voltage represented by the power-VH characteristic PR1 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62.
- step ST39 the ECU 200 sets the required power P1 as the power P that should be generated by the first MG 20.
- step ST32 the ECU 200 causes the vehicle 1 to transition to the first external power feeding mode.
- step ST33 the ECU 200 determines whether or not the power P to be generated by the first MG 20 is equal to or lower than the power A that can be generated without boosting the first MG 20.
- step ST33 If it is determined that power P is equal to or lower than power A (YES in step ST33), the process proceeds to step ST34.
- step ST34 the ECU 200 generates a signal S2 for causing the boost converter 62 to stop the boost operation, and sends the generated signal S2 to the boost converter 62.
- step S33 when it is determined that the power P exceeds the power A (NO in step S33), the process proceeds to step ST35.
- step ST35 the ECU 200 generates a signal S2 for setting the system voltage VH to a voltage represented by the power P-VH characteristic PR1 shown in FIG. 6, and sends the generated signal S2 to the boost converter 62.
- the boost operation by the boost converter is stopped, so that Loss can be reduced.
- the boost operation by the boost converter is stopped, so that the electrical loss due to boost is further reduced. Can do.
- FIG. 11 is an overall block diagram of the vehicle according to the third embodiment of the present invention.
- the vehicle 151 in FIG. 11 is different from the vehicle 1 in FIG. 1 as follows.
- the power generated by the engine 10 is not transmitted to the drive wheels 80 via the speed reducer 58, but is transmitted only to the first MG 220.
- the electric power generated by the first MG 220 is supplied to the second MG 30 via the PCU 60.
- the second MG 230 has a function as a drive motor. Second MG 230 provides driving force to drive wheels 80 using at least one of the electric power stored in storage battery 70 and the electric power generated by first MG 220. Second MG 230 further functions as a generator that generates electric power by regenerative braking. The electric power generated by the second MG 230 is supplied to the storage battery 70 via the PCU 60. Thereby, the storage battery 70 is charged.
- ECU 200 controls the boosting operation of boost converter 62 in the same manner as in the first embodiment or the second embodiment in the external power feeding mode and the traveling power generation mode.
- the electrical loss due to boosting can be reduced.
- FIG. 12 is an overall block diagram of the vehicle according to the fourth embodiment of the present invention.
- the vehicle 152 in FIG. 12 is different from the vehicle 1 in FIG. 1 as follows.
- the power generated by the engine 10 is transmitted to the drive wheels 80 via the transmission 380 and the speed reducer 58.
- MG 320 is driven by power from storage battery 70.
- the vehicle is driven by the two powers of the engine 10 and the MG 320.
- the efficiency of the engine 10 is high, the vehicle is driven only by the engine 10.
- MG320 also functions as a generator. MG 320 is driven in a regenerative mode by inverter 364, and the generated regenerative power is sent to storage battery 70 via inverter 364 and boost converter 62.
- the inverter 364 converts the DC power output from the boost converter 62 into AC power and outputs the AC power to the MG 320. Thereby, MG 320 is driven using the electric power stored in storage battery 70. Further, inverter 364 converts AC power generated by MG 320 into DC power, and outputs the DC power to boost converter 62.
- ECU 200 controls the boosting operation of boost converter 62 in the same manner as in the first embodiment or the second embodiment in the external power feeding mode and the traveling power generation mode.
- the electrical loss due to boosting can be reduced.
- FIG. 13 is a diagram for explaining the boost control according to the fifth embodiment of the present invention.
- the horizontal axis represents the power P generated by the first MG 20.
- the vertical axis is the system voltage VH.
- the power P-VH characteristic PR2 is the same as that shown in FIG.
- Power P-VH characteristic PR3 represents system voltage VH with respect to the power generation amount of first MG 20 in the external power supply mode. In the external power supply mode, system voltage VH for power P is set according to characteristic PR3.
- the boost operation by the boost converter 62 is stopped, and the voltage of the storage battery 70 is set to the system voltage Set to VH.
- the voltage boosted by the boost converter 62 is set to the system voltage VH.
- the boost operation by the boost converter is stopped when the power P is A (the power that the first MG 20 can generate with the voltage of the storage battery 70) or less, and in the fifth embodiment, the external power supply is performed.
- the step-up operation by the step-up converter is stopped when the electric power P is A ′ ( ⁇ A) or less, but the present invention is not limited to this.
- boost converter 62 When there is no limit to the range of power that can be generated by first MG 20 without boosting operation by boost converter 62, or when the power required from outside is always within the range in which first MG 20 can generate power without boosting operation in the external power supply mode In the external power supply mode, the boost operation by the boost converter 62 may be stopped uniformly regardless of the power to be generated.
- 1,151,152 Vehicle 10 engine, 11 engine speed sensor, 12 first resolver, 13 second resolver, 14 wheel speed sensor, 16 drive shaft, 20,220 1st MG, 30 2nd MG, 40 power split device, 58 reducer, 60 PCU, 62 boost converter, 64,364 inverter, 65 air conditioner, 70 storage battery, 78 power converter, 80 drive wheels, 82 axle, 84 socket, 86,380 transmission, 90 IG switch, 91 parking Switch, 92 shift lever, 93 parking lock device, 102 cylinder, 104 fuel injection device, 105 ignition device, 106 water temperature sensor, 112 intake passage, 112A air cleaner, 112B air flow meter, 112C Air temperature sensor, 112D electronic throttle valve, 113 exhaust passage, 113A air-fuel ratio sensor, 113B three-way catalytic converter, 113C catalyst temperature sensor, 113D silencer, 144 knock sensor, 156 temperature sensor, 158 current sensor, 160 voltage sensor, 162 Accelerator position sensor, 200 ECU, 201 power control
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Abstract
Description
本発明の別の局面の車両は、発電機と、蓄電装置と、車両の走行および発電機の駆動に用いられる内燃機関と、発電機で発生された電力または蓄電装置から出力された電力を車両の外部に出力できるように構成された電気回路と、蓄電装置と発電機との間に設けられた電圧変換装置と、制御部とを備える。制御部は、車両が駐車中に車両の外部に電力を供給する外部給電モードにおいて、車両の外部から第1の電力の供給が要求され、蓄電装置から車両の外部に第1の電力を供給する場合には、電圧変換装置による昇圧動作を停止させる。
本発明のある局面の車両の制御装置は、発電機と、蓄電装置と、車両の走行および発電機の駆動に用いられる内燃機関と、発電機で発生された電力または蓄電装置から出力された電力を車両の外部に出力できるように構成された電気回路と、蓄電装置と発電機との間に設けられた電圧変換装置とを備えた車両の制御装置である。制御装置は、モード設定部と、電力制御部とを備える。モード設定部は、車両が駐車中に内燃機関によって発電機に電力を発生させて、発生した電力を車両の外部に供給する第1のモード、または車両が走行中に内燃機関によって発電機に電力を発生させる第2のモードに車両を設定する。電力制御部は、第1のモードにおいて電圧変換装置の動作を制限する。
以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付してその説明は繰り返さない。
図1は、本発明の実施の形態1に従う車両1の全体ブロック図である。図1を参照して、車両1は、エンジン10と、第1モータジェネレータ(以下、第1MGと記載する)20と、第2モータジェネレータ(以下、第2MGと記載する)30と、PCU(Power Control Unit)60と、エアコンディショナ65と、蓄電池70と、電力変換装置78と、駆動輪80と、トランスミッション86と、ECU(Electronic Control Unit)200とを含む。トランスミッション86は、駆動軸16と、動力分割装置40と、減速機58と、車軸82とを含む。
昇圧コンバータ62は、パワートランジスタQ1,Q2と、ダイオードD1,D2と、リアクトルLと、コンデンサC1と、コンデンサC2とを含む。パワートランジスタQ1,Q2は、正極線PL2と負極線NLとの間に直列に接続される。ダイオードD1,D2は、それぞれパワートランジスタQ1,Q2に逆並列に接続される。リアクトルLは、パワートランジスタQ1,Q2の接続ノードと正極線PL1との間に接続される。パワートランジスタQ1,Q2として、たとえば、IGBT(Insulated Gate Bipolar Transistor)やパワーMOSFET(Metal Oxide Semiconductor Field-Effect Transistor)などの電力スイッチング素子を用いることができる。
図6において、横軸は、第1MG20が発生する電力Pである。縦軸がシステム電圧VHである。
実施の形態1では、外部給電モードは、第1外部給電モードのみを含むものとした。
実施の形態1および2で説明した外部給電モードでの昇圧コンバータ62の制御は、車両がシリーズハイブリッド車両の場合にでも適用することができる。本実施の形態では、車両がシリーズハイブリッド車両の場合について説明する。
図11の車両151が、図1の車両1と相違する点は、以下である。
実施の形態1および2で説明した外部給電モードでの昇圧コンバータ62の制御は、車両がパラレルハイブリッド車両(MGが1つの車両)の場合にでも適用することができる。本実施の形態では、車両がパラレルハイブリッド車両の場合について説明する。
図12の車両152が、図1の車両1と相違する点は、以下である。
上述の実施形態では、外部給電モードでは、第1MG20が発電すべき電力が、第1MG20が蓄電池70の電圧で発電できる電力A以下の場合には、昇圧コンバータ62での昇圧を停止した。しかしながら、電力Aよりも少しだけ小さな電力A′以下の場合に昇圧コンバータ62での昇圧を停止することとしてもよい。
図13において、横軸は、第1MG20が発生する電力Pである。縦軸がシステム電圧VHである。
電力P-VH特性PR3は、外部給電モードにおいて、第1MG20の発電量に対するシステム電圧VHを表わす。外部給電モードでは、特性PR3に従って、電力Pに対するシステム電圧VHが設定される。
Claims (12)
- 車両であって、
発電機と、
蓄電装置と、
前記車両の走行および前記発電機の駆動に用いられる内燃機関と、
前記発電機で発生された電力または前記蓄電装置から出力された電力を前記車両の外部に出力できるように構成された電気回路と、
前記発電機を駆動する駆動回路と、
前記蓄電装置と前記発電機との間に設けられた電圧変換装置と、
前記車両が駐車中に前記内燃機関によって前記発電機に電力を発生させて、発生した電力を前記車両の外部に供給する第1のモード、または前記車両が走行中に前記内燃機関によって前記発電機に電力を発生させる第2のモードに前記車両を設定する制御部とを備え、
前記制御部は、前記第1のモードにおいて前記電圧変換装置の動作を制限する、車両。 - 前記制御部は、前記第1のモードにおいて前記駆動回路側に設定する電圧を、前記第2のモードにおいて前記発電機が前記第1のモードでの電力と同一の電力を供給する時に前記駆動回路側に設定する電圧よりも低くする、請求項1記載の車両。
- 前記制御部は、前記第1のモードにおいて、前記電圧変換装置による昇圧動作を停止させる、請求項1記載の車両。
- 前記制御部は、前記第2のモードにおいて、前記発電機が発電する必要のある電力に係わらず前記電圧変換装置による昇圧動作を実行させ、
前記制御部は、前記第1のモードにおいて、前記発電機が発電する必要のある電力が所定値以下の場合には、前記電圧変換装置による昇圧動作を停止させる、請求項2記載の車両。 - 前記第1のモードにおいて、前記車両の外部から第1の電力の供給が要求され、前記蓄電装置から前記外部に第2の電力を供給する場合には、前記発電機が発電する必要のある電力は、前記第1の電力から前記第2の電力を減算した電力である、請求項4記載の車両。
- 前記第1のモードにおいて、前記車両の外部から第1の電力の供給が要求され、前記発電機から前記蓄電装置に第2の電力を供給する場合には、前記発電機が発電する必要のある電力は、前記第1の電力と前記第2の電力を合算した電力である、請求項4記載の車両。
- 前記第1のモードにおいて、前記車両の外部から第1の電力の供給が要求され、前記蓄電装置から前記車両の外部へ電力を供給せず、かつ前記発電機から前記蓄電装置へ電力を供給しない場合には、前記発電機が発電する必要のある電力は、前記第1の電力である、請求項4記載の車両。
- 前記制御部は、前記第1のモードにおいて、前記発電機が発電する必要のある電力が、前記所定値を超える場合には、前記電圧変換装置による昇圧動作を実行させ、
前記制御部は、前記第1のモードにおける前記昇圧動作によって前記駆動回路側に設定する電圧が前記電圧変換装置による昇圧可能な上限値未満の場合には、前記駆動回路側に設定する電圧を、前記第2のモードにおいて前記発電機が前記第1のモードでの電力と同一の電力を供給する時の前記電圧変換装置の昇圧動作によって前記駆動回路側に設定する電圧よりも低くする、請求項4記載の車両。
載の車両。 - 前記所定値は、前記発電機が昇圧せずに発電できる電力である、請求項4記載の車両。
- 車両であって、
発電機と、
蓄電装置と、
前記車両の走行および前記発電機の駆動に用いられる内燃機関と、
前記発電機で発生された電力または前記蓄電装置から出力された電力を前記車両の外部に出力できるように構成された電気回路と、
前記発電機を駆動する駆動回路と、
前記蓄電装置と前記発電機との間に設けられた電圧変換装置と、
前記車両が駐車中に前記車両の外部に電力を供給する外部給電モードにおいて、前記車両の外部から第1の電力の供給が要求され、前記蓄電装置から前記車両の外部に前記第1の電力を供給する場合には、前記電圧変換装置による昇圧動作を停止させる制御部とを備える、車両。 - 前記制御部は、前記昇圧動作の停止とともに、前記内燃機関を停止させる、請求項10記載の車両。
- 発電機と、蓄電装置と、車両の走行および前記発電機の駆動に用いられる内燃機関と、前記発電機で発生された電力または前記蓄電装置から出力された電力を前記車両の外部に出力できるように構成された電気回路と、前記発電機を駆動する駆動回路と、前記蓄電装置と前記発電機との間に設けられた電圧変換装置とを備えた車両の制御装置であって、
前記制御装置は、
前記車両が駐車中に前記内燃機関によって前記発電機に電力を発生させて、発生した電力を前記車両の外部に供給する第1のモード、または前記車両が走行中に前記内燃機関によって前記発電機に電力を発生させる第2のモードに前記車両を設定するモード設定部と、
前記第1のモードにおいて前記電圧変換装置の動作を制限する電力制御部とを備える、車両の制御装置。
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