WO2013111258A1 - 車両および車両用制御方法 - Google Patents
車両および車両用制御方法 Download PDFInfo
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- WO2013111258A1 WO2013111258A1 PCT/JP2012/051307 JP2012051307W WO2013111258A1 WO 2013111258 A1 WO2013111258 A1 WO 2013111258A1 JP 2012051307 W JP2012051307 W JP 2012051307W WO 2013111258 A1 WO2013111258 A1 WO 2013111258A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- 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 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 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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- B60K6/445—Differential gearing distribution type
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Definitions
- the present invention relates to control of a vehicle equipped with a rotating electrical machine that is a drive source and a power storage device that supplies electric power to the rotating electrical machine.
- Japanese Unexamined Patent Application Publication No. 2003-235108 discloses a hybrid vehicle that limits the output of a motor that generates driving force by operating a charging switch. Further, a technique for changing the upper limit value of discharge power of a battery mounted on a hybrid vehicle using a switch or the like in accordance with the intention of a vehicle occupant is known.
- An object of the present invention is to provide a vehicle and a vehicle control method capable of suppressing a change in driving force due to an erroneous operation and generating a driving force intended by a vehicle occupant.
- a vehicle is a rotating electrical machine for generating a driving force for the vehicle, a power storage device that supplies power to the rotating electrical machine, and an operation for changing an upper limit value of discharge power of the power storage device.
- the control unit includes a control device for controlling the discharge power so as to release the limit of the upper limit value. The control device determines whether or not the first operation has been received so that an operation amount for the operation device required to determine that the first operation has been received is longer than an operation amount required to determine that the second operation has been received. To do.
- the control device determines that the first operation has been accepted when the operation duration time for the controller device is equal to or greater than the first threshold value, and the second operation when the operation duration time is equal to or greater than the second threshold value. Is determined to have been accepted.
- the first threshold value is larger than the second threshold value.
- control device determines that the first operation has been accepted when the number of operations on the controller device is equal to or greater than the first threshold value, and performs the second operation when the number of operations is equal to or greater than the second threshold value. It is determined that it has been accepted.
- the first threshold value is larger than the second threshold value.
- control device changes the upper limit value when the upper limit value of the discharge power is received when the first operation is received and the upper limit value of the discharge power is released when the second operation is received.
- the upper limit value of the discharge power is changed so as to be more gradual.
- the control device selects a predetermined travel mode from among the plurality of travel modes, and limits the upper limit value of the discharge power as compared with a case where another travel mode is selected. Then, when the second operation is accepted, the selection of the predetermined traveling mode is canceled, and the restriction on the upper limit value of the discharge power is released.
- the vehicle further includes an internal combustion engine for charging the power storage device.
- the plurality of travel modes include a first travel mode, a second travel mode that is a predetermined travel mode, and a third travel mode. Both the first and second travel modes are travel modes in which the vehicle is controlled according to execution conditions for preferentially performing control for causing the vehicle to travel with the internal combustion engine stopped.
- the third travel mode is a travel mode in which the vehicle is controlled in accordance with execution conditions for preferentially performing control for causing the vehicle to travel while the internal combustion engine is operated.
- a control method for a vehicle receives a rotating electrical machine for generating a driving force, a power storage device that supplies power to the rotating electrical machine, and an operation for changing an upper limit value of discharge power of the power storage device. It is the control method for vehicles used for the vehicle carrying the operating device for this.
- the vehicle control method includes a step of controlling the discharge power so as to limit the upper limit value when the first operation for limiting the upper limit value of the discharge power is received in the operating device, and the upper limit value restriction is released.
- the step of controlling the discharge power so as to release the upper limit restriction and the operation amount for the operation device required to determine that the first operation has been accepted are Determining whether or not the first operation has been received so as to be longer than the operation amount required to determine that the two operations have been received.
- the operation time required to determine that the first operation for limiting the upper limit value of the discharge power of the power storage device has been received is longer than the operation time required to determine that the second operation has been received. .
- 1 is an overall block diagram of a vehicle according to an embodiment. It is a figure which shows the relationship between the request
- FIG. 1 It is a flowchart (the 2) which shows the control structure of the program performed by ECU mounted in the vehicle which concerns on this Embodiment. It is FIG. (1) for demonstrating operation
- FIG. 8 is a diagram (No. 2) for explaining the operation of the ECU mounted on the vehicle according to the present embodiment.
- the vehicle 1 includes an engine 10, a first motor generator (hereinafter referred to as first MG) 20, a second motor generator (hereinafter referred to as second MG) 30, a power split device 40, and a speed reducer 58. , A PCU (Power Control Unit) 60, a battery 70, a charging device 78, a drive wheel 80, a display device 150, a switching operation device 152, and an ECU (Electronic Control Unit) 200.
- first MG first motor generator
- second MG second motor generator
- the vehicle 1 travels by driving force output from at least one of the engine 10 and the second MG 30.
- the power generated by the engine 10 is divided into two paths by the power split device 40.
- One of the two routes is a route transmitted to the drive wheel 80 via the speed reducer 58, and the other route is a route transmitted to the first MG 20.
- the first MG 20 and the second MG 30 are, for example, three-phase AC rotating electric machines.
- First MG 20 and second MG 30 are driven by PCU 60.
- the first MG 20 has a function as a generator that generates power using the power of the engine 10 divided by the power split device 40 and charges the battery 70 via the PCU 60. Further, first MG 20 receives electric power from battery 70 and rotates crankshaft 18 that is the output shaft of engine 10. Thus, the first MG 20 has a function as a starter for starting the engine 10.
- the second MG 30 has a function as a driving motor that applies driving force to the driving wheels 80 using at least one of the electric power stored in the battery 70 and the electric power generated by the first MG 20. Second MG 30 also has a function as a generator for charging battery 70 via PCU 60 using electric power generated by regenerative braking.
- the engine 10 is an internal combustion engine such as a gasoline engine or a diesel engine.
- the engine 10 includes a plurality of cylinders 102 and a fuel injection device 104 that supplies fuel to each of the plurality of cylinders 102. It should be noted that one or more cylinders 102 of the engine 10 may be provided.
- the fuel injection device 104 injects an appropriate amount of fuel to each cylinder at an appropriate time based on a control signal S1 from the ECU 200, or stops fuel injection to each cylinder.
- the fuel injection amount by the fuel injection device 104 is adjusted by the injection time.
- the engine 10 is provided with an engine rotation speed sensor 11.
- the engine rotation speed sensor 11 detects the rotation speed Ne (hereinafter referred to as engine rotation speed) Ne of the crankshaft 18 of the engine 10.
- the engine rotation speed sensor 11 transmits a signal indicating the detected engine rotation speed Ne to the ECU 200.
- Power split device 40 mechanically connects each of the three elements of rotating shaft 16 for rotating drive wheel 80, crank shaft 18 of engine 10 and rotating shaft of first MG 20.
- the power split device 40 enables transmission of power between the other two elements by using any one of the three elements described above as a reaction force element.
- the rotation shaft of second MG 30 is connected to rotation shaft 16.
- the power split device 40 is a planetary gear mechanism including a sun gear 50, a pinion gear 52, a carrier 54, and a ring gear 56.
- Pinion gear 52 meshes with each of sun gear 50 and ring gear 56.
- the carrier 54 supports the pinion gear 52 so as to be capable of rotating, and is connected to the crankshaft 18 of the engine 10.
- Sun gear 50 is coupled to the rotation shaft of first MG 20.
- Ring gear 56 is connected to the rotation shaft of second MG 30 and reduction gear 58 via rotation shaft 16.
- Reduction gear 58 transmits power from power split device 40 and second MG 30 to drive wheels 80. Reducer 58 transmits the reaction force from the road surface received by drive wheels 80 to power split device 40 and second MG 30.
- the PCU 60 includes a plurality of switching elements. PCU 60 converts the DC power stored in battery 70 into AC power for driving first MG 20 and second MG 30 by controlling the on / off operation of the switching element. PCU 60 includes a converter and an inverter (both not shown) controlled based on control signal S2 from ECU 200. The converter boosts the voltage of the DC power received from battery 70 and outputs it to the inverter. The inverter converts the DC power output from the converter into AC power and outputs the AC power to first MG 20 and / or second MG 30. Thus, first MG 20 and / or second MG 30 are driven using the electric power stored in battery 70.
- the inverter converts AC power generated by the first MG 20 and / or the second MG 30 into DC power and outputs the DC power to the converter.
- the converter steps down the voltage of the DC power output from the inverter and outputs the voltage to battery 70. Thereby, battery 70 is charged using the electric power generated by first MG 20 and / or second MG 30.
- the converter may be omitted.
- the battery 70 is a power storage device and a rechargeable DC power source.
- a secondary battery such as nickel metal hydride or lithium ion is used.
- the voltage of the battery 70 is about 200V, for example.
- Battery 70 may be charged using electric power supplied from external power supply 302 in addition to being charged using electric power generated by first MG 20 and / or second MG 30 as described above.
- the battery 70 is not limited to a secondary battery, but may be a battery capable of generating a DC voltage, such as a capacitor, a solar battery, or a fuel battery.
- the battery 70 is provided with a battery temperature sensor 156, a current sensor 158, and a voltage sensor 160.
- Battery temperature sensor 156 detects battery temperature TB of battery 70. Battery temperature sensor 156 transmits a signal indicating battery temperature TB to ECU 200.
- the current sensor 158 detects the current IB of the battery 70.
- Current sensor 158 transmits a signal indicating current IB to ECU 200.
- the voltage sensor 160 detects the voltage VB of the battery 70. Voltage sensor 160 transmits a signal indicating voltage VB to ECU 200.
- ECU 200 estimates the remaining capacity of battery 70 (described as SOC (State of Charge) in the following description) based on current IB of battery 70, voltage VB, and battery temperature TB. For example, ECU 200 estimates an OCV (Open Circuit Voltage) based on current IB, voltage VB, and battery temperature TB, and estimates the SOC of battery 70 based on the estimated OCV and a predetermined map. Also good. Alternatively, ECU 200 may estimate the SOC of battery 70 by, for example, integrating the charging current and discharging current of battery 70.
- SOC State of Charge
- the charging device 78 charges the battery 70 using the electric power supplied from the external power supply 302 when the charging plug 300 is attached to the vehicle 1.
- Charging plug 300 is connected to one end of charging cable 304.
- the other end of charging cable 304 is connected to external power supply 302.
- the positive terminal of the charging device 78 is connected to a power supply line PL that connects the positive terminal of the PCU 60 and the positive terminal of the battery 70.
- the negative terminal of the charging device 78 is connected to the earth line NL that connects the negative terminal of the PCU 60 and the negative terminal of the battery 70.
- the first resolver 12 is provided in the first MG 20.
- the first resolver 12 detects the rotational speed Nm1 of the first MG 20.
- the first resolver 12 transmits a signal indicating the detected rotation speed Nm1 to the ECU 200.
- the second resolver 13 is provided in the second MG 30.
- the second resolver 13 detects the rotational speed Nm2 of the second MG 30.
- the second resolver 13 transmits a signal indicating the detected rotation speed Nm2 to the ECU 200.
- a wheel speed sensor 14 is provided on a drive shaft 82 that connects the speed reducer 58 and the drive wheel 80.
- the wheel speed sensor 14 detects the rotational speed Nw of the drive wheel 80.
- the wheel speed sensor 14 transmits a signal indicating the detected rotation speed Nw to the ECU 200.
- ECU 200 calculates vehicle speed V based on the received rotational speed Nw.
- ECU 200 may calculate vehicle speed V based on rotation speed Nm2 of second MG 30 instead of rotation speed Nw.
- Accelerator pedal 162 is provided in the driver's seat.
- the accelerator pedal 162 is provided with a pedal stroke sensor 164.
- the pedal stroke sensor 164 detects the stroke amount AP of the accelerator pedal 162.
- the pedal stroke sensor 164 transmits a signal indicating the stroke amount AP to the ECU 200.
- an accelerator pedal depression force sensor for detecting the depression force of the occupant of the vehicle 1 with respect to the accelerator pedal may be used.
- the ECU 200 generates a control signal S1 for controlling the engine 10 and outputs the generated control signal S1 to the engine 10.
- ECU 200 also generates a control signal S2 for controlling PCU 60 and outputs the generated control signal S2 to PCU 60.
- the ECU 200 generates a control signal S3 for controlling the display device 150, and outputs the generated control signal S3 to the display device 150.
- the ECU 200 controls the entire hybrid system, that is, the charging / discharging state of the battery 70 and the operating states of the engine 10, the first MG 20 and the second MG 30 so that the vehicle 1 can operate most efficiently by controlling the engine 10, the PCU 60, and the like. .
- ECU200 calculates the required power corresponding to the stroke amount AP and the vehicle speed V of the accelerator pedal 162 provided in the driver's seat. Further, when operating the auxiliary machine, ECU 200 adds the power required for operating the auxiliary machine to the calculated required power.
- the auxiliary machine is, for example, an air conditioner. ECU 200 controls the torque of first MG 20, the torque of second MG 30, or the output of engine 10 according to the calculated required power.
- the traveling mode includes a first CD (Charge Depleting) mode, a second CD mode, and a CS (Charge Sustaining) mode.
- CD Charge Depleting
- CS Charge Sustaining
- the first and second CD modes are travel modes that prioritize EV travel over HV travel.
- ECU 200 controls vehicle 1 in accordance with execution conditions for executing EV traveling with priority over HV traveling.
- CS mode is a travel mode in which HV travel is prioritized over EV travel.
- ECU 200 controls vehicle 1 according to an execution condition for executing HV traveling with priority over EV traveling.
- the EV traveling refers to a traveling state of the vehicle 1 that causes the vehicle 1 to travel using the second MG 30 with the engine 10 stopped.
- the HV traveling refers to a traveling state of the vehicle 1 in which the engine 10 is operated to generate power by the first MG 20 and the SOC of the battery 70 is maintained at a target value.
- the second CD mode is a running mode for sustaining EV running more than when the first CD mode is selected.
- ECU 200 limits upper limit value Wout of the discharge power of battery 70 more than when first CD mode is selected.
- Display device 150 displays the currently selected travel mode and the like based on control signal S3 from ECU 200.
- the display device 150 may use, for example, an LCD (Liquid Crystal Display), an LED (Light Emitting Diode), or the like.
- a notification device that notifies the occupant of the vehicle 1 of the currently selected travel mode using voice or the like may be used.
- the switching operation device 152 accepts an operation for switching the traveling mode from the occupant of the vehicle 1.
- the switching operation device 152 includes, for example, a push switch, a slide switch, a lever switch, a dial switch, or a touch panel.
- the switching operation device 152 includes a first switch 166 and a second switch 168.
- the first switch 166 is provided around the driver's seat and is a switch for accepting an operation for switching from one of the first CD mode and the CS mode to the other mode.
- the first switch 166 transmits a signal SW ⁇ b> 1 indicating that the operation has been received to the ECU 200 when the operation of the occupant of the vehicle 1 is received.
- the ECU 200 switches the traveling mode from the selected one of the first CD mode and the CS mode to the other mode not selected in response to the reception of the signal SW1.
- the ECU 200 switches the traveling mode from the first CD mode to the CS mode when, for example, the signal SW1 is received when the first CD mode is selected. For example, when the signal SW1 is received when the CS mode is selected, the ECU 200 switches the traveling mode from the CS mode to the first CD mode.
- the second switch 168 is provided in the vicinity of the driver's seat, and performs the first operation for switching the driving mode from the first CD mode or the CS mode to the second CD mode (for selecting the second CD mode) and the second CD mode to the first CD. A second operation for switching the traveling mode to the mode or the CS mode (for canceling the selection of the second CD mode) is accepted.
- the second switch 168 transmits a signal SW ⁇ b> 2 indicating that the operation has been received to the ECU 200 when the operation of the passenger of the vehicle 1 is received.
- ECU200 when receiving the signal SW2, determines whether the received operation is the first operation or the second operation based on the selected travel mode. ECU 200 determines that the first operation has been received, for example, in response to reception of signal SW2 during selection of the first CD mode or the CS mode. ECU 200 determines that the second operation has been received in response to reception of signal SW2 during selection of the second CD mode.
- ECU 200 switches the running mode from the first CD mode or the CD mode to the second CD mode when it is determined that the first operation is accepted. That is, ECU 200 selects the second CD mode when it is determined that the first operation has been received.
- ECU200 switches driving mode from 2nd CD mode to 1st CD mode or CD mode, when it determines with having received 2nd operation. That is, ECU 200 cancels the selection of the second CD mode when it is determined that the second operation has been accepted.
- the ECU 200 may select a traveling mode (any one of the first CD mode and the CS mode) immediately before the second CD mode is selected when canceling the selection of the second CD mode.
- the ECU 200 cancels the selection of the second CD mode even when the signal SW2 is not received. Also good.
- the predetermined conditions include, for example, a condition that the engine 10 is being started, a condition that the vehicle speed is equal to or greater than a threshold value, a condition that the amount of depression of the accelerator pedal 162 is equal to or greater than the threshold value, and warming up of the engine 10 At least one of a condition that the SOC of the battery 70 is below a threshold value, a condition that the temperature of the battery 70 is outside a predetermined range, and a condition that heating is required Includes conditions.
- ECU 200 performs HV traveling and EV traveling according to the required power Preq when each traveling mode is selected.
- ECU200 performs EV traveling when the required power Preq is less than or equal to a threshold value, and controls the PCU 60 so that the traveling power Ptrv corresponding to the required power Preq is generated only by the output of the second MG 30.
- ECU 200 when required power Preq exceeds a threshold value, ECU 200 performs HV traveling, and PCU 60 and engine 10 are configured such that traveling power Ptrv corresponding to required power Preq is generated by the output of engine 10 and the output of second MG 30. To control.
- FIG. 2 shows the relationship between the required power Preq and the traveling power Ptrv when each traveling mode is selected, and changes in the traveling state.
- the relationship between the required power Preq and the traveling power Ptrv and the change in the traveling state when the CS mode is selected are shown in the upper part of FIG.
- the vertical axis indicates the traveling power Ptrv
- the horizontal axis indicates the required power Preq.
- the vertical axis indicates the traveling power Ptrv
- the horizontal axis indicates the required power Preq.
- the vertical axis indicates the traveling power Ptrv
- the horizontal axis indicates the required power Preq.
- the horizontal axis of each stage may be the accelerator pedal depression amount AP instead of the required power.
- the required power Preq and the traveling power Ptrv are described as indicating a linear relationship in each traveling mode except for the section of the required power Preq of Preq (1) to Preq (3) in the second CD mode. However, it is not particularly limited to a linear relationship.
- the required power Preq and the traveling power Ptrv may indicate a non-linear relationship in which the traveling power Ptrv monotonously increases with the increase in the required power Preq except for the above section.
- Preq (4) indicates the upper limit value of the required power Preq. When the required power Preq is Preq (4), the accelerator pedal 162 is depressed until reaching the upper limit value of the depression amount AP.
- the threshold value Preq (0) of the required power Preq for switching the running state between HV running and EV running when the CS mode is selected as the running mode is the first CD mode and It is smaller than the threshold values Preq (2) and Preq (3) when the second CD mode is selected.
- the range of required power Preq (Preq (0) to Preq (3)) in which HV traveling is performed is wider than when the first CD mode or the second CD mode is selected.
- the HV traveling is preferentially performed over the case where the first CD mode or the second CD mode is selected.
- the ECU 200 When the CS mode is selected, the ECU 200 performs charge / discharge control on the battery 70 so that the SOC of the battery 70 becomes a target value by giving priority to HV travel over EV travel.
- the ECU 200 when the SOC of the battery 70 is lower than the target value, the ECU 200 generates the running power Ptrv corresponding to the required power Preq, and outputs the output of the engine 10 so that the charging power becomes larger than the discharging power.
- the torque of 1MG20 or the torque of 2nd MG30 is controlled.
- the ECU 200 allows the traveling power Ptrv corresponding to the required power Preq of the vehicle 1 to be generated while allowing the discharging power to be larger than the charging power. It controls the output of the engine 10, the torque of the first MG 20, or the torque of the second MG 30. That is, the engine 10 generates charging power and traveling power for the battery 70.
- the target value of the SOC of the battery 70 may be a constant value, the SOC of the battery 70 when the CS mode is selected, or a predetermined value for the SOC when the CS mode is selected. It may be a value obtained by addition or subtraction.
- ECU 200 stops engine 10 and performs EV traveling. Also good.
- the threshold value Preq (1) of the required power Preq for switching the running state between the HV running and the EV running when the first CD mode is selected is the threshold value Preq (1 when the CS mode is selected. 0) and smaller than the threshold value Preq (2) when the second CD mode is selected.
- the required power Preq range (0 to Preq (2)) in which EV traveling is performed is wider than when the CS mode is selected.
- EV traveling is performed with priority over the case where the CS mode is selected.
- the range of required power Preq (0 to Preq (3)) for EV travel is wider than when the CS mode or the first CD mode is selected.
- the EV running is performed more continuously than when the first CD mode is selected.
- the ECU 200 sets the required power Preq to the threshold value Preq (3).
- the torque of the first MG 20, and the second MG 30 so that the traveling power Ptrv corresponding to the required power Preq as shown in the middle and lower stages of FIG. Control torque.
- the engine 10 generates traveling power.
- the ECU 200 selects the first CD mode and the required power Preq is equal to or less than the threshold value Preq (2), or the second CD mode is selected and the required power Preq is the threshold value Preq (3).
- the torque of the second MG 30 is controlled so that the traveling power Ptrv corresponding to the required power Preq is generated by the output of the second MG 30.
- ECU 200 decreases upper limit value Wout of the discharge power of battery 70. Therefore, as shown in the lower part of FIG. 2, the required power Preq does not exceed the travel power Ptrv (3) corresponding to the reduced upper limit value Wout of the discharge power in the section of Preq (1) to Preq (3). Thus, the traveling power Ptrv is limited.
- the traveling power Ptrv is limited.
- the travel mode is changed and the discharge power of the battery 70 is changed against the occupant's intention.
- the upper limit value Wout may be changed. Therefore, the occupant may feel uncomfortable with changes in the driving force of the vehicle 1.
- the amount of operation for second switch 168 required for ECU 200 to determine that first operation for limiting upper limit value Wout of the discharge power of battery 70 has been received is the discharge amount of battery 70. It is characterized in that it is determined whether or not the first operation or the second operation is received so as to be longer than the operation amount required to determine that the second operation for canceling the restriction on the upper limit value Wout of power is received. To do.
- the ECU 200 has accepted the first operation when the operation duration time Tsw for the second switch 168 is equal to or longer than the first threshold value Tsw (1). judge.
- the first threshold value Tsw (1) is desirably a value larger than 1 second, for example.
- the ECU 200 determines that the second operation has been accepted when the operation duration time Tsw for the second switch 168 is equal to or longer than the second threshold value Tsw (2).
- the second threshold value Tsw (2) is preferably a value within 1 second, for example. That is, the first threshold value Tsw (1) is larger than the second threshold value Tsw (2).
- the operation continuation time Tsw for the second switch 168 is a time for which the state in which the second switch 168 is operated continues, and is a time for which the state in which the signal SW2 is transmitted to the ECU 200 continues. More specifically, the operation time Tsw of the second switch 168 is, for example, a signal SW2 indicating that the occupant of the vehicle 1 operated the second switch 168 to the ECU 200 from the initial position to the ECU 200. The time during which the state operated to a certain position (hereinafter referred to as the on state) continues is said.
- FIG. 3 shows a functional block diagram of the ECU 200 mounted on the vehicle 1 according to the present embodiment.
- ECU 200 includes a mode determination unit 202, an operation time determination unit 204, a travel mode selection unit 206, and a power control unit 208.
- the mode determination unit 202 determines whether or not the second CD mode is selected. For example, the mode determination unit 202 determines whether or not the second CD mode is selected based on the state of the execution flag of the second CD mode.
- the execution flag of the second CD mode is turned on when the second CD mode is selected by the traveling mode selection unit 206 as described later, and is turned off when the selection of the second CD mode is released.
- the mode determination unit 202 determines that the second CD mode is selected when the execution flag of the second CD mode is on, and the second CD mode is determined when the execution flag of the second CD mode is off. It is determined that it is not selected.
- the mode determination unit 202 may determine that the second CD mode is not selected, for example, when the first CD mode or the CS mode is selected. Whether or not the first CD mode or the CS mode is selected may be determined based on the state of the execution flag in the same manner as the determination of whether or not the second CD mode is selected, and detailed description thereof will be repeated. Absent.
- the operation time determination unit 204 determines whether or not the operation continuation time Tsw for the second switch 168 is equal to or greater than a threshold corresponding to the selected travel mode.
- the operation time determination unit 204 has an operation duration Tsw for the second switch 168 that is equal to or greater than the first threshold value Tsw (1). It is determined whether or not.
- the operation time determination unit 204 is, for example, when the second CD mode is not selected and the operation duration Tsw for the second switch 168 is equal to or longer than the first threshold value Tsw (1).
- the operation determination flag may be turned on.
- the operation time determination unit 204 has an operation duration time Tsw for the second switch 168 that is equal to or greater than the second threshold value Tsw (2). It is determined whether or not.
- the operation time determination unit 204 determines the second operation determination when, for example, the second CD mode is selected and the operation continuation time Tsw for the second switch 168 is equal to or longer than the second threshold value Tsw (2).
- the flag may be turned on.
- the first threshold value Tsw (1) is larger than the second threshold value Tsw (2). Therefore, for example, as shown in FIG. 4, when the second switch 168 is turned on at time T (0) when the second CD mode is selected, the operation time determination unit 204 is When the time T (1) has elapsed, it is determined that the operation continuation time Tsw is greater than or equal to the second threshold value Tsw (2).
- the operation time determination unit 204 is more effective than time T (1).
- the slow time T (2) has elapsed, it is determined that the operation continuation time Tsw is equal to or longer than the first threshold value Tsw (1).
- Travel mode selection unit 206 selects a travel mode based on the determination results of mode determination unit 202 and operation time determination unit 204.
- the driving mode selection unit 206 sets the second CD mode to the driving mode when the second CD mode is not selected and the operation duration time Tsw for the second switch 168 is equal to or longer than the first threshold value Tsw (1). Choose as.
- the travel mode selection unit 206 may select the second CD mode, for example, when the first operation determination flag is turned on.
- the travel mode selection unit 206 selects the second CD mode as the travel mode and turns on the execution flag of the second CD mode.
- the traveling mode selection unit 206 cancels the selection of the second CD mode when the second CD mode is selected and the operation duration time Tsw for the second switch 168 is equal to or longer than the second threshold value Tsw (2).
- the driving mode selection unit 206 may cancel the selection of the second CD mode by selecting the driving mode selected immediately before the second CD mode is selected.
- either one of the first CD mode and the CS mode may be selected based on the state of the vehicle 1, or a predetermined traveling mode may be selected.
- the power control unit 208 controls the discharge power of the battery 70 so as not to exceed the changed upper limit value Wout by changing the upper limit value Wout of the discharge power of the battery 70 according to selection and release of the second CD mode. To do.
- the power control unit 208 lowers the upper limit value Wout of the discharge power of the battery 70 than when the second CD mode is not selected.
- the power control unit 208 changes the upper limit value Wout of the discharge power of the battery 70 using Wout (1) as a target value. For example, when the selection of the second CD mode is canceled, the power control unit 208 changes the upper limit value Wout of the discharge power of the battery 70 using Wout (2) as a target value.
- the target value Wout (1) is a value that is at least smaller than the target value Wout (2), and the upper limit value Ptrv of the traveling power Ptrv during EV traveling when the second CD mode shown in FIG. 2 is selected. This is a value corresponding to (3).
- the target value Wout (2) is a value corresponding to the upper limit value Ptrv (1) of the traveling power PTrv during EV traveling when the first CD mode shown in FIG. 2 is selected.
- Each of the target values Wout (1) and Wout (2) may be a predetermined value, or may be calculated by correcting the predetermined value according to the state of the vehicle 1.
- the power control unit 208 is in the case where the second CD mode is selected, and the current value Wout ′ of the upper limit value Wout of the discharge power of the battery 70 and the target value Wout (1) do not match (diverge). ), The upper limit value Wout is changed so that the current value Wout ′ changes with the first change amount ⁇ Wout (1) so as to match the target value Wout (1).
- 1st change amount (DELTA) Wout (1) demonstrates as what shows the change amount of the upper limit Wout for every calculation cycle. That is, when the second CD mode is selected, the power control unit 208 determines that the current value Wout ′ matches the target value Wout (1) (or the current value Wout ′ and the target value Wout (1)). The first change amount ⁇ Wout (1) is added every calculation cycle (until the magnitude of the difference becomes a predetermined value or less). As a result, the upper limit value Wout approaches the target value Wout (1) as time passes.
- the power control unit 208 controls the discharge power of the battery 70 so as not to exceed the upper limit value Wout that changes with the first change amount ⁇ Wout (1) for each calculation cycle.
- the traveling power Ptrv before the second CD mode is selected is Ptrv ′
- the traveling power Ptrv from the time when the second CD mode is selected decreases from Ptrv ′ toward Ptrv (3) with time. It will be followed.
- the traveling power Ptrv is limited to the upper limit value Ptrv (3) by limiting the upper limit value Wout of the discharge power.
- the power control unit 208 is a case where the selection of the second CD mode is canceled, and the current value Wout ′ of the upper limit value Wout of the discharge power of the battery 70 does not match the target value Wout (2).
- the upper limit value Wout is changed so that the current value Wout ′ changes with the second change amount ⁇ Wout (2) so that the current value Wout ′ matches the target value Wout (2).
- the magnitude of the second change amount ⁇ Wout (2) is larger than the magnitude of the first change amount ⁇ Wout (1).
- the second change amount ⁇ Wout (2) will be described as indicating the change amount of the upper limit value Wout for each calculation cycle. That is, when the selection of the second CD mode is canceled, the power control unit determines that the current value Wout ′ matches the target value Wout (2) (or the current value Wout ′ and the target value Wout (2)). The second change amount ⁇ Wout (2) is added every calculation cycle (until the magnitude of the difference becomes a predetermined value or less). As a result, the upper limit value Wout approaches the target value Wout (2) as time elapses.
- the power control unit 208 controls the discharge power of the battery 70 so as not to exceed the upper limit value Wout that changes with the second change amount ⁇ Wout (2) for each calculation cycle.
- the state in which the required power Preq is Preq ′ continues before and after switching from the second CD mode to the first CD mode.
- the traveling power Ptrv before the selection of the second CD mode is released is Ptrv (3)
- the traveling power Ptrv is changed from Ptrv (3) to Ptrv ′ from the time when the selection of the second CD mode is released. It will increase over time.
- the limit of the upper limit value Wout of the discharge power is canceled, so that the traveling power Ptrv returns to Ptrv ′.
- mode determination unit 202 is executed by the CPU of ECU 200 executing a program stored in the memory. Although described as what is realized and functions as software, it may be realized by hardware. Such a program is recorded in a storage medium and installed in the vehicle 1.
- step (hereinafter, step is described as S) 100 ECU 200 determines whether or not the second CD mode is selected. If second CD mode is selected (YES in S100), this process ends. If not (NO in S100), the process proceeds to S102.
- the ECU 200 determines whether or not the operation continuation time Tsw for the second switch 168 is equal to or longer than the first threshold value Tsw (1). If operation duration time Tsw for second switch 168 is equal to or longer than first threshold value Tsw (1) (YES in S102), the process proceeds to S104. If not (NO in S102), the process returns to S100.
- ECU 200 selects the second CD mode as the travel mode.
- ECU 200 executes power limit control.
- the power limit control is control that prevents the discharge power from exceeding the upper limit value Wout while changing the upper limit value Wout of the discharge power of the battery 70 to the target value Wout (1) with the first change amount ⁇ Wout (1).
- the control content of the power limit control is as described for the operation of the power control unit 208 described above. Therefore, the detailed description is not repeated.
- ECU 200 determines whether or not the second CD mode is selected. If the second CD mode is selected (YES in S200), the process proceeds to S202. If not (NO in S200), this process ends.
- ECU 200 determines whether or not operation continuation time Tsw for second switch 168 is equal to or greater than second threshold value Tsw (2). If operation duration time Tsw for second switch 168 is equal to or longer than second threshold value Tsw (2) (YES in S202), the process proceeds to S204. If not (NO in S202), the process returns to S200.
- ECU 200 cancels the selection of the second CD mode. At this time, the ECU 200 selects the travel mode that was selected immediately before the second CD mode was selected.
- ECU 200 executes restriction release control.
- the discharge power does not exceed the upper limit value Wout while the upper limit value Wout of the discharge power of the battery 70 is changed by the second change amount ⁇ Wout (2) until the target value Wout (2) is reached. It is.
- the control content of the restriction release control is as described for the operation of the power control unit 208 described above. Therefore, the detailed description is not repeated.
- ECU 200 changes the upper limit value Wout of the discharge power of the battery 70 so as to decrease to the target value Wout (1) by the first change amount ⁇ Wout (1) by executing the power limit control. Further, ECU 200 controls the discharge power of battery 70 so as not to exceed the changed upper limit value Wout. Since the upper limit value Wout of the discharge power is gently reduced by the first change amount ⁇ Wout (1), the driving force is gently limited, so that the acceleration (G) acting on the vehicle 1 also changes gently. .
- ECU 200 changes the upper limit value Wout of the discharge power of the battery 70 to the target value Wout (2) by the second change amount ⁇ Wout (2) by executing the restriction release control. Further, ECU 200 controls the discharge power of battery 70 so as not to exceed the changed upper limit value Wout. Since the upper limit value Wout of the discharge power is quickly increased by the second change amount ⁇ Wout (2), the limitation of the driving force is quickly released, so that the acceleration (G) acting on the vehicle 1 also changes quickly. It becomes.
- the first threshold value of the operation duration time Tsw for determining that the first operation for limiting the upper limit value Wout of the discharge power of the battery 70 has been received.
- Tsw (1) longer than the second threshold value Tsw (2) for determining that the second operation for canceling the restriction has been accepted.
- the vehicle occupant's intention to select the second CD mode is accurate. It can be judged high. Therefore, it is possible to suppress a change in driving force against the occupant's intention. Accordingly, it is possible to provide a vehicle and a vehicle control method that can suppress a change in driving force due to an erroneous operation and generate a driving force intended by an occupant.
- the second threshold value Tsw (2) of the operation continuation time Tsw for determining that the second operation has been received is set to be shorter than the first threshold value Tsw (1), the upper limit of the discharge power of the battery 70 is reached.
- the restriction on the value Wout can be released with good responsiveness.
- the upper limit value is set so that the change when the upper limit value Wout is restricted when the second CD mode is selected is more gradual than the change when the upper limit value Wout is released when the second CD mode is released.
- the vehicle 1 has been described as a hybrid vehicle having the configuration shown in FIG. 1, but it may be any vehicle provided with an operating device that changes the upper limit value of the discharge power of the battery 70, and in particular.
- the configuration is not limited to that shown in FIG.
- the vehicle 1 may be another type of hybrid vehicle, may be a hybrid vehicle that does not perform EV traveling but performs only HV traveling, or may be an electric vehicle.
- ECU 200 selects the second CD mode when the operation duration time Tsw for second switch 168 is equal to or longer than first threshold value Tsw (1) when the second CD mode is not selected.
- the ECU 200 selects the second CD mode when the number of operations Nsw for the second switch 168 is greater than or equal to Nsw (1) when the second CD mode is not selected, and the number of operations for the second switch 168 when the second CD mode is selected.
- the selection of the second CD mode may be canceled when Nsw is equal to or higher than Nsw (2).
- Nsw (1) is a value larger than Nsw (2). Even if it does in this way, the effect similar to the effect produced in this Embodiment will generate
- the second CD mode is selected and canceled by the same switch (second switch 168), but the second CD mode is selected and canceled by different switches. There may be.
- the present invention has been described with respect to the case where the present invention is applied to the second switch 168 for performing an operation of lowering the upper limit value of the discharge power when selecting the second CD mode and returning the upper limit value when releasing.
- the present invention is not limited to such a switch.
- the present invention may be applied to a power switch, an eco switch, a charge switch, a battery deterioration suppression switch, and the like.
- the operation time for determining that the first operation for performing the operation of limiting (decreasing) the upper limit value Wout of the discharge power is accepted is canceled (upper limit value). It may be determined whether or not the first operation or the second operation is received so as to be longer than the operation time for determining that the second operation for performing the operation (increasing Wout) has been received.
- the power switch is a switch for selecting and canceling the power mode.
- the upper limit value Wout of the discharge power is increased, and when the selection of the power mode is canceled.
- the upper limit value Wout of the discharge power is restored (lowered to the original upper limit value Wout).
- the eco switch is a switch for selecting and canceling the eco mode.
- the eco mode is selected, the upper limit value Wout of the discharge power is reduced, and when the eco mode is cancelled, the discharge power is reduced.
- the upper limit value Wout is increased.
- the charge switch is a switch for selecting and canceling the charge mode for increasing the SOC of the battery 70.
- the charge mode is selected, the upper limit value Wout of the discharge power is lowered and the selection of the charge mode is canceled. If so, the upper limit value Wout of the discharge power is increased.
- the battery deterioration suppression switch is a switch for selecting and canceling the battery deterioration suppression mode for suppressing the deterioration of the battery 70.
- the upper limit value Wout of the discharge power is decreased.
- the upper limit value Wout of the discharge power is increased when the selection of the battery deterioration suppression mode is cancelled.
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Abstract
Description
たとえば、第1CDモードが選択されている場合を想定する(S100にてNO)。このとき、第2CDモードの実行フラグは図8に示すようにオフ状態になる。また、車両1は、バッテリ70の放電電力の上限値Woutに近い走行パワーPtrvになるように第2MG30が制御されているものとする。
たとえば、第2CDモードが選択されている場合を想定する(S200にてYES)。このとき、第2CDモードの実行フラグは図9に示すようにオン状態になる。また、車両1は、バッテリ70の放電電力の制限された上限値Woutに近い走行パワーPtrvになるように第2MG30が制御されているものとする。
Claims (7)
- 車両(1)に駆動力を発生させるための回転電機(30)と、
前記回転電機に電力を供給する蓄電装置(70)と、
前記蓄電装置の放電電力の上限値を変更する操作を受け付けるための操作装置(152)と、
前記放電電力の前記上限値を制限するための第1操作を前記操作装置において受け付けた場合には前記上限値を制限し、前記上限値の制限を解除するための第2操作を前記操作装置において受け付けた場合には前記上限値の制限を解除するように前記放電電力を制御するための制御装置(200)とを含み、
前記制御装置は、前記第1操作を受け付けたと判定するために要する前記操作装置に対する操作量が前記第2操作を受け付けたと判定するために要する前記操作量よりも長くなるように前記第1操作を受け付けたか否かを判定する、車両。 - 前記制御装置は、前記操作装置に対する操作継続時間が第1しきい値以上である場合に前記第1操作を受け付けたと判定し、前記操作継続時間が第2しきい値以上である場合に前記第2操作を受け付けたと判定し、
前記第1しきい値は、前記第2しきい値よりも大きい値である、請求項1に記載の車両。 - 前記制御装置は、前記操作装置に対する操作回数が第1しきい値以上である場合に前記第1操作を受け付けたと判定し、前記操作回数が第2しきい値以上である場合に前記第2操作を受け付けたと判定し、
前記第1しきい値は、前記第2しきい値よりも大きい値である、請求項1に記載の車両。 - 前記制御装置は、前記第1操作を受け付けて前記放電電力の前記上限値が制限される場合の前記上限値の変化が前記第2操作を受け付けて前記放電電力の前記上限値の制限が解除される場合の変化よりも緩やかになるように前記放電電力の上限値を変更する、請求項1に記載の車両。
- 前記制御装置は、前記第1操作を受け付けた場合に複数の走行モードのうちの所定の走行モードを選択して、他の走行モードが選択される場合よりも前記放電電力の前記上限値を制限し、前記第2操作を受け付けた場合に前記所定の走行モードの選択を解除して、前記放電電力の前記上限値の制限を解除する、請求項1に記載の車両。
- 前記車両は、前記蓄電装置を充電するための内燃機関(10)をさらに含み、
前記複数の走行モードは、第1走行モードと、前記所定の走行モードである第2走行モードと、第3走行モードとを含み、
前記第1および第2走行モードは、いずれも前記内燃機関を停止させた状態で前記車両を走行させる制御を優先して実行するための実行条件にしたがって前記車両を制御する走行モードであって、
前記第3走行モードは、前記内燃機関を作動させた状態で前記車両を走行させる制御を優先して実行するための実行条件にしたがって前記車両を制御する走行モードである、請求項5に記載の車両。 - 駆動力を発生させるための回転電機(30)と、前記回転電機に電力を供給する蓄電装置(70)と、前記蓄電装置の放電電力の上限値を変更する操作を受け付けるための操作装置(152)とを搭載した車両(1)に用いられる車両用制御方法であって、
前記放電電力の前記上限値を制限するための第1操作を前記操作装置において受け付けた場合には前記上限値を制限するように前記放電電力を制御するステップと、
前記上限値の制限を解除するための第2操作を前記操作装置において受け付けた場合には前記上限値の制限を解除するように前記放電電力を制御するステップと、
前記第1操作を受け付けたと判定するために要する前記操作装置に対する操作量が前記第2操作を受け付けたと判定するために要する前記操作量よりも長くなるように前記第1操作を受け付けたか否かを判定するステップとを含む、車両用制御方法。
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| JP2013555022A JP5673862B2 (ja) | 2012-01-23 | 2012-01-23 | 車両および車両用制御方法 |
| US14/365,422 US9522601B2 (en) | 2012-01-23 | 2012-01-23 | Vehicle and method of controlling vehicle |
| PCT/JP2012/051307 WO2013111258A1 (ja) | 2012-01-23 | 2012-01-23 | 車両および車両用制御方法 |
| CN201280067892.6A CN104093594B (zh) | 2012-01-23 | 2012-01-23 | 车辆以及车辆用控制方法 |
| EP12866754.0A EP2808197B1 (en) | 2012-01-23 | 2012-01-23 | Vehicle and vehicle control method |
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Also Published As
| Publication number | Publication date |
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| CN104093594B (zh) | 2016-01-27 |
| US9522601B2 (en) | 2016-12-20 |
| EP2808197B1 (en) | 2016-12-21 |
| US20150002053A1 (en) | 2015-01-01 |
| JP5673862B2 (ja) | 2015-02-18 |
| EP2808197A1 (en) | 2014-12-03 |
| EP2808197A4 (en) | 2015-09-30 |
| JPWO2013111258A1 (ja) | 2015-05-11 |
| CN104093594A (zh) | 2014-10-08 |
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