WO2011128986A1 - ハイブリッド車両 - Google Patents
ハイブリッド車両 Download PDFInfo
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- WO2011128986A1 WO2011128986A1 PCT/JP2010/056637 JP2010056637W WO2011128986A1 WO 2011128986 A1 WO2011128986 A1 WO 2011128986A1 JP 2010056637 W JP2010056637 W JP 2010056637W WO 2011128986 A1 WO2011128986 A1 WO 2011128986A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/082—Selecting or switching between different modes of propelling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0062—Adapting control system settings
- B60W2050/007—Switching between manual and automatic parameter input, and vice versa
- B60W2050/0071—Controller overrides driver automatically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/246—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/215—Selection or confirmation of options
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/24—Energy storage means
- B60W2710/242—Energy storage means for electrical energy
- B60W2710/244—Charge state
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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
- 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
Definitions
- the present invention relates to a hybrid vehicle, and more particularly to a hybrid vehicle including an internal combustion engine and an electric motor that generates vehicle driving force.
- Hybrid vehicles are attracting attention as environmentally friendly vehicles.
- a hybrid vehicle includes a rechargeable power storage device, an inverter, and an electric motor driven by the inverter as a power source for vehicle travel.
- plug-in hybrid vehicles that can charge an in-vehicle power storage device from a power source outside the vehicle have attracted attention (hereinafter, the power source outside the vehicle is also referred to as an “external power source”
- Charging an in-vehicle power storage device using an external power source is also referred to as “external charging”).
- Patent Document 1 discloses a plug-in hybrid vehicle capable of suppressing deterioration of a power storage unit according to a usage pattern of a user.
- the non-external charging time Tcum which is the elapsed time from the most recent external charging (previous external charging)
- the map is referred to
- the SOC control center value corresponding to the non-external charging time Tcum at that time is acquired, and the charge / discharge management of the power storage unit is executed based on the acquired SOC control center value Is done.
- non-external charging time Tcum exceeds a predetermined threshold value Ta, the SOC control center value increases until the control center value SOCC (N) is reached.
- SOC State Of Charge
- CD Charge Depleting
- CS Charge Sustaining
- the user can switch the driving mode, and the SOC when the driving mode is switched from the CD mode to the CS mode by the user is set as a control target, so that the SOC can be maintained as desired by the user. It is useful to do so.
- the EV mode can be performed at a desired timing by switching the travel mode from the CS mode to the CD mode at a timing desired by the user.
- the user can switch the driving mode at an arbitrary timing, there is a possibility of promoting the deterioration of the power storage device. That is, when the driving mode is switched from the CD mode to the CS mode by the user when the SOC of the power storage device is high, overcharge may occur because the SOC is controlled in a high state. In particular, when the power storage device is a lithium ion secondary battery, lithium deposition due to overcharging becomes a problem.
- the present invention has been made to solve such a problem, and an object of the present invention is to allow the user to request switching of the traveling mode and to suppress deterioration of the power storage device due to overcharging of the power storage device. It is to provide a possible hybrid vehicle.
- a hybrid vehicle includes a rechargeable power storage device, an electric motor that receives electric power from the power storage device and generates vehicle driving force, an internal combustion engine, a control device, a detection device, and a travel mode switching request. And a switch.
- the control device includes a CD mode in which the internal combustion engine is stopped and priority is given to traveling using only the electric motor, and a CS mode in which the internal combustion engine is operated to maintain the charged state of the power storage device at a predetermined target. Control switching.
- the detection device detects the temperature of the power storage device.
- the travel mode switching request switch is configured so that the user can request switching of the travel mode.
- the control device When switching from the CD mode to the CS mode is requested by the travel mode switching request switch, the control device has a state where the SOC of the power storage device is greater than a specified amount and the temperature of the power storage device is lower than the specified temperature. The driving mode is maintained in the CD mode.
- the allowable charge power (Win) indicating the power that can be input to the power storage device is more limited than when the SOC is less than the specified amount.
- the chargeable power is limited more than when the temperature is equal to or higher than the specified temperature.
- the control device may Is the SOC when the travel mode is switched.
- the hybrid vehicle includes a rechargeable power storage device, an electric motor that receives electric power from the power storage device and generates vehicle driving force, an internal combustion engine, a control device, a detection device, and a travel mode.
- the control device includes a CD mode in which the internal combustion engine is stopped and priority is given to traveling using only the electric motor, and a CS mode in which the internal combustion engine is operated to maintain the charged state of the power storage device at a predetermined target. Control switching.
- the detection device detects the temperature of the power storage device.
- the travel mode switching request switch is configured so that the user can request switching of the travel mode.
- the control device determines that the SOC of the power storage device is greater than the first specified amount and the temperature of the power storage device is higher than the specified temperature. Is lower, the driving mode is switched from the CD mode to the CS mode, and the SOC target is set to a second prescribed amount that is smaller than the first prescribed amount.
- the control device when switching from the CD mode to the CS mode is requested by the travel mode switching request switch, the control device has a charge allowable power (Win) indicating power that can be input to the power storage device is smaller than a specified value.
- Win charge allowable power
- the control device determines that the SOC is equal to or lower than the first specified amount or the temperature of the power storage device is equal to or higher than the specified temperature.
- the travel mode is switched from the CD mode to the CS mode, and the SOC target is the SOC when the travel mode is switched.
- the hybrid vehicle further includes a charging device.
- the charging device is configured to receive power from an external power source and charge the power storage device. Then, after charging the power storage device by the charging device, the control device sets the traveling mode to the CD mode.
- the power storage device is a lithium ion secondary battery.
- a travel mode switching request switch that allows the user to request switching of the travel mode. Then, when switching from the CD mode to the CS mode is requested by the travel mode switching request switch, the travel mode is changed when the SOC of the power storage device is greater than the specified amount and the temperature of the power storage device is lower than the specified temperature. Since the driving mode is maintained from the CD mode to the CS mode and the SOC target is lowered, the SOC is not maintained in a high state. Therefore, according to the present invention, the user can request switching of the travel mode, and deterioration of the power storage device due to overcharging of the power storage device can be suppressed.
- FIG. 1 is an overall block diagram of a hybrid vehicle according to Embodiment 1 of the present invention. It is the figure which showed the relationship between the change of SOC of an electrical storage apparatus, and driving modes. It is the figure which showed the charge allowable power of an electrical storage apparatus.
- FIG. 3 is a diagram showing an example of a state where a travel mode is switched in the first embodiment. It is a functional block diagram of ECU shown in FIG. It is the flowchart which showed the process sequence of ECU when the switch from CD mode to CS mode is requested
- FIG. 1 is an overall block diagram of a hybrid vehicle according to Embodiment 1 of the present invention. It is the figure which showed the relationship between the change of SOC of an electrical storage apparatus, and driving modes. It is the figure which showed the charge allowable power of an electrical storage apparatus.
- FIG. 3 is a diagram showing an example of a state where a travel
- FIG. 6 is a flowchart showing a processing procedure of an ECU according to a second embodiment when switching from a CD mode to a CS mode is requested by a travel mode switching request switch. It is the flowchart which showed the process sequence of ECU in this modification when the switch from CD mode to CS mode is requested
- FIG. 1 is an overall block diagram of a hybrid vehicle according to Embodiment 1 of the present invention.
- hybrid vehicle 100 includes an engine 2, a power split device 4, motor generators 6, 10, a transmission gear 8, a drive shaft 12, and wheels 14.
- Hybrid vehicle 100 also includes power storage device 16, temperature sensor 17, power converters 18 and 20, charger 22, charging port 24, ECU (Electronic Control Unit) 26, and travel mode switching request switch 28. And further comprising.
- the power split device 4 is coupled to the engine 2, the motor generator 6 and the transmission gear 8 and distributes power among them.
- a planetary gear having three rotation shafts of a sun gear, a planetary carrier, and a ring gear can be used as the power split device 4, and these three rotation shafts are connected to the rotation shafts of the engine 2, the motor generator 6 and the transmission gear 8, respectively. Is done.
- the rotation shaft of motor generator 10 is connected to the rotation shaft of transmission gear 8. That is, motor generator 10 and transmission gear 8 have the same rotation shaft, and the rotation shaft is connected to the ring gear of power split device 4.
- engine 2 is incorporated in hybrid vehicle 100 as a power source for driving transmission gear 8 that transmits power to drive shaft 12 and driving motor generator 6.
- the motor generator 6 is incorporated in the hybrid vehicle 100 so as to operate as a generator driven by the engine 2 and to operate as an electric motor that can start the engine 2.
- Motor generator 10 is incorporated in hybrid vehicle 100 as a power source that drives transmission gear 8 that transmits power to drive shaft 12.
- the power storage device 16 is a rechargeable DC power supply, which is typically a lithium ion secondary battery, but may be nickel metal hydride or other secondary batteries.
- the power storage device 16 supplies power to the power converters 18 and 20.
- Power storage device 16 is charged by receiving power from power converters 18 and / or 20 when motor generator 6 and / or 10 generates power. Furthermore, the power storage device 16 is charged by receiving power from the charger 22 when charging from an external power source (not shown) connected to the charging port 24.
- Temperature sensor 17 detects temperature TB of power storage device 16 and outputs the detected value to ECU 26. Note that the voltage VB of the power storage device 16 and the current IB input to and output from the power storage device 16 are also detected by a sensor (not shown), and the detected value is given to the ECU 26.
- the power converter 18 converts the power generated by the motor generator 6 into DC power based on the signal PWM1 from the ECU 26 and outputs the DC power to the power storage device 16. Based on signal PWM ⁇ b> 2 from ECU 26, power converter 20 converts DC power supplied from power storage device 16 into AC power and outputs the AC power to motor generator 10. Power converter 18 converts DC power supplied from power storage device 16 into AC power and outputs it to motor generator 6 based on signal PWM1 when engine 2 is started. In addition, power converter 20 converts the power generated by motor generator 10 into DC power based on signal PWM 2 and outputs it to power storage device 16 during braking of the vehicle.
- Motor generators 6 and 10 are AC motors, and are composed of, for example, a three-phase AC synchronous motor in which a permanent magnet is embedded in a rotor.
- the motor generator 6 converts the kinetic energy generated by the engine 2 into electric energy and outputs it to the power converter 18.
- Motor generator 6 generates driving force by the three-phase AC power received from power converter 18 and starts engine 2.
- the motor generator 10 generates driving torque of the vehicle by the three-phase AC power received from the power converter 20.
- the motor generator 10 converts mechanical energy stored in the vehicle as kinetic energy or potential energy into electric energy and outputs the electric energy to the power converter 20 when the vehicle is braked.
- the engine 2 converts thermal energy generated by fuel combustion into kinetic energy of a moving element such as a piston or a rotor, and outputs the converted kinetic energy to the power split device 4.
- a moving element such as a piston or a rotor
- the reciprocating motion is converted into a rotational motion via a so-called crank mechanism, and the kinetic energy of the piston is transmitted to the power split device 4.
- Charger 22 converts electric power from an external power source applied to charging port 24 into a voltage level of power storage device 16 based on signal PWM 3 from ECU 26 and outputs the voltage level to power storage device 16.
- the charging port 24 is an external charging interface for supplying power from the external power source to the power storage device 16.
- the ECU 26 generates signals PWM1 and PWM2 for driving the power converters 18 and 20, respectively, and outputs the generated signals PWM1 and PWM2 to the power converters 18 and 20, respectively.
- ECU 26 receives signal CHRG requesting charging of power storage device 16 by charger 22, ECU 26 generates signal PWM 3 for driving charger 22, and outputs the generated signal PWM 3 to charger 22.
- the ECU 26 controls the switching of the travel mode of the hybrid vehicle 100. That is, ECU 26 controls switching between a CD mode in which EV traveling is prioritized or a CS mode in which engine 2 is operated to maintain the SOC of power storage device 16 at a predetermined target.
- “priority” of EV traveling basically means that EV traveling is performed without maintaining the SOC of the power storage device 16 at a predetermined target. That is, the operation of the engine 2 is permitted when the accelerator pedal is greatly depressed by the driver, or when the engine drive type air conditioner is operated or when the engine is warmed up.
- the engine 2 In the CD mode in which the power storage device 16 travels without maintaining the SOC, the engine 2 is not started unless the driving force is necessary, and the motor generator 10 basically consumes the charging power of the power storage device 16. This is a mode for driving the vehicle.
- the discharge rate is often relatively larger than the charge.
- the CS mode means a travel mode in which the engine 2 is operated to generate power by the motor generator 6 in order to maintain the SOC of the power storage device 16 at a predetermined target. It is not limited.
- the ECU 26 defaults the traveling mode to the CD mode.
- FIG. 2 is a diagram showing the relationship between the change in the SOC of the power storage device 16 and the travel mode. In FIG. 2, it is assumed that there is no travel mode switching request by a travel mode switching request switch 28 described later.
- the driving mode is set to the CD mode after external charging. While traveling in the CD mode, the SOC may temporarily increase due to regenerative power collected when the vehicle decelerates, but the SOC decreases as the travel distance increases as a whole.
- the traveling mode is switched to the CS mode, and the SOC is controlled in the vicinity of the threshold value SO.
- ECU 26 further receives signal MD from travel mode switching request switch 28.
- the signal MD changes according to the travel mode (CD mode / CS mode) selected by the travel mode switching request switch 28.
- ECU 26 determines that switching from the CD mode to the CS mode is requested by travel mode switching request switch 28, ECU 26 controls the switching of the travel mode according to the control structure described later, based on the SOC and temperature TB of power storage device 16. To do.
- the traveling mode switching request switch 28 is an interface device for a user to request switching of the traveling mode.
- the travel mode switching request switch 28 allows the user to select the timing for EV travel. That is, when there is no such switch, as shown in FIG. 2, after the start of running after the completion of charging, the running mode is always the CD mode, and after the SOC reaches the threshold value SO, The running mode is always the CS mode.
- the traveling mode switching request switch 28 switches the traveling mode to the CS mode to secure the SOC, and the traveling mode switching request switch 28 travels in a traveling area where EV traveling is desired.
- EV traveling can be performed in the traveling area.
- the travel mode switching request switch 28 changes the signal MD output to the ECU 26 in response to a travel mode switching request by the user.
- the travel mode switching request switch 28 activates the signal MD when a user inputs a request for switching from the CD mode to the CS mode, and receives the signal MD when a request for switching from the CS mode to the CD mode is input. Is deactivated.
- FIG. 3 is a diagram showing the allowable charging power Win of the power storage device 16.
- charge allowable power Win is the maximum value of power (W) that can be input to power storage device 16.
- W power
- the charge allowable power Win is limited to prevent the power storage device 16 from being overcharged.
- the temperature of the power storage device 16 is low, the voltage behavior becomes sensitive due to an increase in the internal resistance of the power storage device 16, so that even when the temperature of the power storage device 16 is low, the allowable charging power Win is limited to prevent overvoltage.
- the output of the engine 2 is excessive with respect to the target due to the high air density.
- the amount of power generated by the motor generator 6 using the output of the engine 2 becomes excessive and the power storage device 16 is overcharged, so that the output of the engine 2 is reduced.
- the operation mode of the engine 2 becomes a self-sustaining operation mode in which substantially no torque is output, and as a result, the power storage device 16 cannot be charged.
- the SOC decreases.
- the travel mode switching request switch 28 switches the travel mode from the CD mode to the CS mode to maintain the SOC, and the desired timing thereafter. Even if the driving mode is switched from the CS mode to the CD mode, EV driving cannot be performed after all.
- the travel mode switching request switch 28 requests switching from the CD mode to the CS mode, when the SOC of the power storage device 16 is high and the temperature of the power storage device 16 is low, The switching from the CD mode to the CS mode is not permitted, and the running mode is maintained in the CD mode.
- discharge allowable power Wout is the maximum value of power (W) that can be output from power storage device 16.
- FIG. 4 is a diagram illustrating an example of a state in which the traveling mode is switched in the first embodiment. It is assumed that temperature TB of power storage device 16 is lower than a predetermined threshold value indicating that temperature TB is low enough to limit chargeable power Win.
- FIG. 5 is a functional block diagram of the ECU 26 shown in FIG. Referring to FIG. 5, ECU 26 includes a power conversion control unit 32, a travel mode control unit 34, an SOC calculation unit 36, and a charge control unit 38.
- Power conversion control unit 32 controls motor generators 6, 10 based on torque command values TR 1, TR 2 of motor generators 6, 10, motor currents MCRT 1, MCRT 2 and rotor rotational positions ⁇ 1, ⁇ 2, and voltage VB of power storage device 16.
- Signals PWM1 and PWM2 for driving are generated, and the generated signals PWM1 and PWM2 are output to voltage converters 18 and 20, respectively.
- the torque command values TR1 and TR2 are calculated by a torque calculation unit (not shown) based on the accelerator opening and the vehicle speed.
- a torque calculation unit (not shown) based on the accelerator opening and the vehicle speed.
- Each of motor currents MCRT1, MCRT2, rotor rotational positions ⁇ 1, ⁇ 2, and voltage VB is detected by a sensor (not shown).
- Traveling mode control unit 34 is based on signal MD from traveling mode switching request switch 28, temperature TB of power storage device 16 detected by temperature sensor 17, and signal SOC from SOC calculation unit 36 indicating the SOC of power storage device 16. To control the switching of the running mode. Specifically, the traveling mode control unit 34 determines whether switching from the CD mode to the CS mode is requested by the traveling mode switching request switch 28 based on the signal MD, and switches from the CD mode to the CS mode. If it is determined that the switching is requested, the driving mode switching is controlled according to the processing procedure described later.
- traveling mode control unit 34 does not require a traveling mode switching request switch 28 to switch from the CD mode to the CS mode. Is forced into CS mode.
- the driving mode control unit 34 receives a notification from the charging control unit 38 that external charging by the charger 22 has been completed, the driving mode control unit 34 sets the driving mode to the CD mode.
- the traveling mode control unit 34 determines whether to operate the engine 2 based on the accelerator opening signal ACC indicating the accelerator opening, the vehicle speed signal SPD indicating the vehicle speed, the selected traveling mode, and the signal SOC. Determine. Specifically, travel mode control unit 34 calculates the required drive power of the vehicle based on accelerator opening signal ACC and vehicle speed signal SPD, and uses the charge / discharge map defined in advance to determine the SOC of power storage device 16. Based on the above, the required charge / discharge amount of the power storage device 16 is calculated. In the CD mode, the charge request amount is zero.
- the traveling mode control unit 34 calculates the engine output request value by adding the charge / discharge request amount to the drive request power, and based on whether or not the calculated engine output request value exceeds a predetermined threshold value. Thus, it is determined whether or not the engine 2 is to be operated.
- the traveling mode control unit 34 determines that the engine 2 is to be operated according to the operation determination of the engine 2
- the traveling mode control unit 34 starts the engine 2 and determines that the engine 2 is to be stopped according to the operation determination. Stop.
- the SOC calculation unit 36 calculates the SOC of the power storage device 16 based on the detected values of the current IB and the voltage VB of the power storage device 16, and outputs a signal SOC indicating the calculated SOC to the travel mode control unit 34.
- Various known methods can be used for calculating the SOC.
- the charging control unit 38 When the signal CHRG for requesting charging of the power storage device 16 by the charger 22 is activated, the charging control unit 38 is based on the detected values of the voltage VAC and the current IAC of the power input from the charging port 24. A signal PWM ⁇ b> 3 for driving the charger 22 is generated and output to the charger 22. Note that the voltage VAC and the current IAC are detected by sensors (not shown). Further, when the external charging by the charger 22 is completed, the charging control unit 38 notifies the traveling mode control unit 34 to that effect.
- FIG. 6 is a flowchart showing a processing procedure of the ECU 26 when the driving mode switching request switch 28 requests switching from the CD mode to the CS mode.
- ECU 26 determines whether or not switching from the CD mode to the CS mode is requested based on signal MD received from travel mode switching request switch 28 (step S10).
- step S10 If it is determined in step S10 that there is a switching request (YES in step S10), ECU 26 determines whether or not the SOC of power storage device 16 is higher than threshold value Sth (FIG. 4) (step S20). ). If it is determined that the SOC is higher than threshold value Sth (YES in step S10), ECU 26 further indicates threshold value Tth indicating that the temperature of power storage device 16 is low enough to limit chargeable power Win. It is determined whether or not the temperature TB of the power storage device 16 is lower (step S30).
- step S30 If it is determined in step S30 that temperature TB is lower than threshold value Tth (YES in step S30), ECU 26 rejects the request for switching from the CD mode to the CS mode by travel mode switching request switch 28, The running mode is maintained in the CD mode (step S40).
- step S20 when it is determined in step S20 that SOC is equal to or lower than threshold value Sth (NO in step S20), or in step S30, it is determined that temperature TB is equal to or higher than threshold value Tth (in step S30). NO) and ECU 26 switches the running mode from the CD mode to the CS mode (step S50). Then, ECU 26 sets the SOC at the time of traveling mode switching as the SOC target (step S60), and performs charge / discharge control of power storage device 16 so as to realize the set SOC target (step S70).
- Embodiment 1 when switching from the CD mode to the CS mode is requested by travel mode switching request switch 28, the SOC of power storage device 16 is higher than threshold value Sth, and When temperature TB of power storage device 16 is lower than threshold value Tth, the traveling mode is maintained in the CD mode. As a result, the SOC is not maintained in a high state. Therefore, according to the first embodiment, the user can request switching of the travel mode, and deterioration of power storage device 16 due to overcharging of power storage device 16 can be suppressed.
- FIG. 7 is a diagram illustrating an example of a state in which the traveling mode is switched in the second embodiment.
- FIG. 7 corresponds to FIG. 4 described in the first embodiment.
- the temperature TB of the power storage device 16 is such that the temperature TB is such that the charge allowable power Win is limited. It is assumed that it is lower than a predetermined threshold value indicating low.
- the overall configuration of the hybrid vehicle in the second embodiment is the same as that of the hybrid vehicle 100 in the first embodiment shown in FIG.
- FIG. 8 is a flowchart showing a processing procedure of the ECU 26 in the second embodiment when the travel mode switching request switch 28 requests switching from the CD mode to the CS mode.
- the processing from step S110 to S130 is the same as the processing from step S10 to S30 shown in FIG. 6, and therefore, description thereof will not be repeated.
- step S130 If it is determined in step S130 that temperature TB of power storage device 16 is lower than threshold value Tth (YES in step S130), ECU 26 switches the travel mode from the CD mode to the CS mode (step S140). ECU 26 sets a predetermined value SC (FIG. 7) lower than threshold value Sth1 as the SOC target (step S150), and charge / discharge of power storage device 16 so as to realize the set SOC target. Control is performed (step S180).
- SC FIG. 7
- step S120 determines whether the SOC is equal to or lower than threshold value Sth (NO in step S120), or if it is determined in step S130 that temperature TB is equal to or higher than threshold value Tth (step S130).
- step S160 the ECU 26 switches the traveling mode from the CD mode to the CS mode. Then, the ECU 26 sets the SOC at the time of switching the traveling mode as the SOC target (step S170), and then shifts the processing to step S180.
- the SOC of power storage device 16 when switching from the CD mode to the CS mode is requested by travel mode switching request switch 28, the SOC of power storage device 16 is higher than threshold value Sth, and When temperature TB of power storage device 16 is lower than threshold value Tth, the traveling mode is switched from the CD mode to the CS mode, and the SOC target is lowered. As a result, the SOC is not maintained in a high state. Therefore, also according to the second embodiment, the user can request switching of the travel mode, and deterioration of power storage device 16 due to overcharging of power storage device 16 can be suppressed.
- FIG. 9 is a flowchart showing a processing procedure of the ECU 26 in this modified example when the traveling mode switching request switch 28 requests switching from the CD mode to the CS mode. Referring to FIG. 9, this flowchart further includes steps S200 and S210 in the flowchart in the second embodiment shown in FIG.
- step S130 determines whether or not charge allowable power Win is smaller than a specified value.
- Step S200 allowable charging power Win varies depending on the SOC and temperature TB of power storage device 16.
- step S200 If it is determined in step S200 that the allowable charging power Win is smaller than the specified value (YES in step S200), the ECU 26 rejects the request for switching from the CD mode to the CS mode by the travel mode switching request switch 28, The running mode is maintained in the CD mode (step S210). On the other hand, when it is determined that chargeable power Win is equal to or greater than the specified value (NO in step S200), the process proceeds to step S140, and the traveling mode is switched from the CD mode to the CS mode. Steps S110 to S190 are as described in FIG.
- the user can request switching of the driving mode, and deterioration of the power storage device 16 due to overcharging of the power storage device 16 can be suppressed.
- the plug-in hybrid vehicle that can charge the power storage device 16 from the external power source using the charger 22 has been described.
- the scope of application of the present invention is not necessarily limited to the plug-in hybrid vehicle. It is not limited.
- the power storage device 16 is charged from the external power source by the dedicated charger 22.
- the charging method of the power storage device 16 from the external power source is not limited to such a method.
- a power line pair connected to charging port 24 is connected to the neutral point of motor generators 6 and 10, and power from an external power source applied from charging port 24 to the neutral point of motor generators 6 and 10 is converted into a power converter.
- the power storage device 16 may be charged by conversion using 18 and 20.
- the series / parallel type hybrid vehicle in which the power of the engine 2 can be divided and transmitted to the transmission gear and the motor generator 6 by the power split device 4 has been described. It can also be applied to other types of hybrid vehicles. That is, for example, a so-called series-type hybrid vehicle that uses the engine 2 only to drive the motor generator 6 and generates the driving force of the vehicle only by the motor generator 10, or regenerative energy among the kinetic energy generated by the engine 2.
- the present invention is also applicable to a hybrid vehicle in which only the electric energy is recovered as an electric energy, a motor assist type hybrid vehicle in which a motor assists the engine as the main power if necessary.
- motor generator 10 corresponds to an embodiment of “electric motor” in the present invention
- engine 2 corresponds to an embodiment of “internal combustion engine” in the present invention
- ECU 26 corresponds to an embodiment of “control device” in the present invention
- temperature sensor 17 corresponds to an embodiment of “detection device” in the present invention
- charger 22 corresponds to an example of “charging device” in the present invention.
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Abstract
Description
図1は、この発明の実施の形態1によるハイブリッド車両の全体ブロック図である。図1を参照して、ハイブリッド車両100は、エンジン2と、動力分割装置4と、モータジェネレータ6,10と、伝達ギヤ8と、駆動軸12と、車輪14とを備える。また、ハイブリッド車両100は、蓄電装置16と、温度センサ17と、電力変換器18,20と、充電器22と、充電口24と、ECU(Electronic Control Unit)26と、走行モード切替要求スイッチ28とをさらに備える。
走行モード切替要求スイッチ28によってCDモードからCSモードへの切替が要求された場合に、蓄電装置16のSOCがしきい値Sthよりも高く、かつ、蓄電装置16の温度TBがしきい値Tthよりも低いとき、実施の形態1では、CDモードからCSモードへの切替を拒否して走行モードをCDモードに維持するものとした。この実施の形態2では、上記条件の成立時、走行モードは要求どおりに切替えられ、SOCが高止まりしないようにCSモードにおけるSOC目標が引き下げられる。
この変形例では、走行モード切替要求スイッチ28によってCDモードからCSモードへの切替が要求された場合の走行モード切替処理において、蓄電装置16の充電許容電力Winがさらに条件として付加される。そして、充電許容電力Winが規定値よりも小さいとき、実施の形態1で説明したように、走行モードがCDモードに維持される。一方、充電許容電力Winが規定値以上のときは、実施の形態2で説明したように、CDモードからCSモードへ切替えられるとともに、しきい値Sthより低い値SCにSOC目標が引き下げられる。
い、モータジェネレータ10でのみ車両の駆動力を発生する、いわゆるシリーズ型のハイブリッド車両や、エンジン2が生成した運動エネルギーのうち回生エネルギーのみが電気エネルギーとして回収されるハイブリッド車両、エンジンを主動力として必要に応じてモータがアシストするモータアシスト型のハイブリッド車両などにもこの発明は適用可能である。
Claims (8)
- 再充電可能な蓄電装置(16)と、
前記蓄電装置から電力を受けて車両駆動力を発生する電動機(10)と、
内燃機関(2)と、
前記内燃機関を停止して前記電動機のみを用いての走行を優先させる第1のモードと、前記内燃機関を動作させて前記蓄電装置の充電状態を所定の目標に維持する第2のモードとを含む走行モードの切替を制御する制御装置(26)と、
前記蓄電装置の温度を検出するための検出装置(17)と、
前記走行モードの切替を利用者が要求可能に構成された走行モード切替要求スイッチ(28)とを備え、
前記走行モード切替要求スイッチによって前記第1のモードから前記第2のモードへの切替が要求された場合、前記制御装置は、前記充電状態を示す状態量が規定量よりも多く、かつ、前記蓄電装置の温度が規定温度よりも低いとき、前記走行モードを前記第1のモードに維持する、ハイブリッド車両。 - 前記状態量が前記規定量よりも多いとき、前記状態量が前記規定量以下のときよりも、前記蓄電装置へ入力可能な電力を示す充電許容電力が制限され、
前記温度が前記規定温度よりも低いとき、前記温度が前記規定温度以上のときよりも、前記充電許容電力が制限される、請求の範囲1に記載のハイブリッド車両。 - 前記走行モード切替要求スイッチによる前記第1のモードから前記第2のモードへの切替要求に応じて前記第1のモードから前記第2のモードへ前記走行モードが切替えられたとき、前記制御装置は、前記充電状態の目標を前記走行モードが切替えられたときの前記状態量とする、請求の範囲1または2に記載のハイブリッド車両。
- 再充電可能な蓄電装置(16)と、
前記蓄電装置から電力を受けて車両駆動力を発生する電動機(10)と、
内燃機関(2)と、
前記内燃機関を停止して前記電動機のみを用いての走行を優先させる第1のモードと、前記内燃機関を動作させて前記蓄電装置の充電状態を所定の目標に維持する第2のモードとを含む走行モードの切替を制御する制御装置(26)と、
前記蓄電装置の温度を検出するための検出装置(17)と、
前記走行モードの切替を利用者が要求可能に構成された走行モード切替要求スイッチ(28)とを備え、
前記走行モード切替要求スイッチによって前記第1のモードから前記第2のモードへの切替が要求された場合、前記制御装置は、前記充電状態を示す状態量が第1の規定量よりも多く、かつ、前記蓄電装置の温度が規定温度よりも低いとき、前記第1のモードから前記第2のモードへ前記走行モードを切替えるとともに、前記充電状態の目標を前記第1の規定量よりも少ない第2の規定量とする、ハイブリッド車両。 - 前記走行モード切替要求スイッチによって前記第1のモードから前記第2のモードへの切替が要求された場合、前記制御装置は、前記蓄電装置へ入力可能な電力を示す充電許容電力が規定値よりも小さいとき、前記走行モードを前記第1のモードに維持する、請求の範囲4に記載のハイブリッド車両。
- 前記走行モード切替要求スイッチによって前記第1のモードから前記第2のモードへの切替が要求された場合、前記制御装置は、前記状態量が前記第1の規定量以下であるか、または、前記温度が前記規定温度以上であるとき、前記第1のモードから前記第2のモードへ前記走行モードを切替えるとともに、前記充電状態の目標を前記走行モードが切替えられたときの前記状態量とする、請求の範囲4または5に記載のハイブリッド車両。
- 車両外部の電源から電力を受けて前記蓄電装置を充電するように構成された充電装置(22)をさらに備え、
前記制御装置は、前記充電装置による前記蓄電装置の充電後、前記走行モードを前記第1のモードに設定する、請求の範囲1,2,4および5のいずれかに記載のハイブリッド車両。 - 前記蓄電装置は、リチウムイオン二次電池である、請求の範囲1,2,4および5のいずれかに記載のハイブリッド車両。
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Also Published As
Publication number | Publication date |
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EP2559578B1 (en) | 2020-07-22 |
JP5370584B2 (ja) | 2013-12-18 |
EP2559578A4 (en) | 2018-03-14 |
EP2559578A1 (en) | 2013-02-20 |
JPWO2011128986A1 (ja) | 2013-07-11 |
US8892286B2 (en) | 2014-11-18 |
US20130030635A1 (en) | 2013-01-31 |
CN102858576B (zh) | 2015-08-19 |
CN102858576A (zh) | 2013-01-02 |
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