WO2012004846A1 - 車両用制御装置および車両用制御方法 - Google Patents
車両用制御装置および車両用制御方法 Download PDFInfo
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- WO2012004846A1 WO2012004846A1 PCT/JP2010/061392 JP2010061392W WO2012004846A1 WO 2012004846 A1 WO2012004846 A1 WO 2012004846A1 JP 2010061392 W JP2010061392 W JP 2010061392W WO 2012004846 A1 WO2012004846 A1 WO 2012004846A1
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- charging
- control
- power
- storage device
- charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
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- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y02T90/12—Electric charging stations
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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
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- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
Definitions
- the present invention relates to control of a vehicle on which a power storage device and a charging device for charging the power storage device using an external power source are mounted, and more particularly to a technique for suppressing overcharging of the power storage device.
- Such a vehicle may be equipped with a power storage device for supplying electric power to the motor and a charging device for charging the power storage device using an external power source.
- Patent Document 1 discloses a method of charging a storage battery that prevents overcharging even when a storage battery that is not very discharged is charged.
- This storage battery charging method is a storage battery charging method in which after a strong charge until the terminal voltage of the storage battery reaches a gas generation voltage, a weak charge is performed only for a timer time, the terminal voltage of the storage battery varies per unit time during a weak charge.
- the timer time is shortened according to the weak charge elapsed time and the count up is continued. Conversely, when the fluctuation value is larger than the full charge judgment value, The control is continued so that the count-up is continued until the timer time.
- the charging power fluctuates due to various factors, so charging with a charging power smaller than the assumed charging power is performed. There is a case. Completion of charging of the power storage device is determined based on the measured voltage of the power storage device. However, the threshold value of the measurement voltage corresponding to the predetermined remaining capacity varies depending on the fluctuation of the charging power. Therefore, as described above, when the charging power is smaller than the assumed charging power, the target charging for the power storage device when the charging is completed when the measured voltage becomes equal to or higher than the threshold value. There is a possibility of charging beyond the amount.
- An object of the present invention is to provide a vehicle control device and a vehicle control method for suppressing overcharging during charging using an external power source.
- a vehicle control device includes a rotating electrical machine serving as a drive source, a power storage device for supplying power to the rotating electrical machine, and a charging device for charging the power storage device using an external power source. It is the vehicle control apparatus mounted in the vehicle which contains.
- the vehicle control device charges the power storage device with an upper limit value of the charging power using the external power source when the detection unit for detecting the actual voltage of the power storage device and the external power source and the charging device are connected.
- a control unit for executing the first charge control The control unit compares the actual voltage detected by the detection unit during execution of the first charge control with a first threshold value that is an open-circuit voltage of the power storage device when the charge state of the power storage device is a target charge state. Then, the first charge control is terminated when the actual voltage is equal to or higher than the first threshold value.
- control unit performs the first charge control by using the smaller one of the upper limit value of the charging power based on the state of the charging device and the upper limit value of the charging power acceptable in the power storage device as the upper limit value of the charging power. Execute.
- the target state of charge is a fully charged state of the power storage device. More preferably, when the upper limit value of the charging power is limited from the standard value based on the state of the charging device and the state of the power storage device, the control unit detects the actual value detected by the detecting unit during the execution of the first charging control. The first charge control is terminated when the voltage is equal to or higher than the first threshold value.
- control unit performs the second charging control for charging the power storage device so that the charging power becomes constant after the first charging control is finished, and the detecting unit is configured to execute the second charging control.
- the second charge control is terminated when the actual voltage detected by the above becomes equal to or higher than the second threshold value.
- the second threshold is an actual voltage during execution of the second charging control corresponding to the case where the state of charge of the power storage device is a fully charged state, and is a value larger than the first threshold.
- control unit ends the second charging control when the charging power is equal to or lower than a predetermined value.
- a vehicle control method includes a rotating electrical machine serving as a drive source, a power storage device for supplying power to the rotating electrical machine, and a charging device for charging the power storage device using an external power source.
- a vehicle control method for a vehicle including The vehicle control method includes a step of detecting an actual voltage of a power storage device, and a first power supply for charging the power storage device with an upper limit value of charging power using the external power source when the external power source and the charging device are connected.
- the power storage device in which the actual voltage detected in the step of executing one charge control and the step of detecting the actual voltage during the execution of the first charge control and the charge state of the power storage device (42) are the target charge state And a first threshold value which is an open circuit voltage of the first charge control, and when the actual voltage is equal to or higher than the first threshold value, the first charging control is terminated.
- the actual voltage detected during the execution of the first charge control is compared with the threshold value of the open-circuit voltage corresponding to the target charge state, and when the actual voltage exceeds the threshold value,
- the threshold value of the open-circuit voltage corresponding to the target charge state By ending 1 charge control, even if charging power fluctuates during charging using an external power supply, it is possible to reliably suppress charging exceeding the target charging amount. Therefore, it can prevent reliably that the charge state of a main battery will be in an overcharge state. Therefore, it is possible to provide a vehicle control device and a vehicle control method for suppressing overcharging during charging using an external power source.
- FIG. 1 is an overall block diagram of a hybrid vehicle equipped with a vehicle control device according to the present embodiment.
- 6 is a timing chart showing changes in voltage and current when charging power is constant during charging using an external power supply. It is a timing chart which shows the change of CCV and OCV at the time of charge using an external power supply.
- ECU which is a control device for vehicles concerning this embodiment. It is a figure which shows the relationship between OCV and SOC. It is a figure which shows the relationship between (DELTA) V and temperature TB.
- 1 is an overall block diagram of an electric vehicle to which the present invention is applicable.
- vehicle 100 includes a first motor generator (hereinafter referred to as MG) 2, a second MG 4, a first inverter 12, a second inverter 14, a smoothing capacitor 16, and a boost converter 22.
- MG motor generator
- SMR system main relay
- main battery 42 main battery 42
- charging device 50 main battery 42
- power split device 52 main battery 42
- drive wheel 54 drive wheel 54
- engine 56 engine 56
- ECU Electronic Control Unit
- the vehicle 100 is described as being a hybrid vehicle.
- the vehicle 100 is not particularly limited to a hybrid vehicle, and may be any vehicle that uses at least a rotating electric machine as a drive source. Therefore, vehicle 100 may be an electric vehicle.
- the first MG2, the second MG4, and the engine 56 are connected to the power split device 52.
- the vehicle 100 travels by driving force from at least one of the engine 56 and the second MG 4.
- the power generated by the engine 56 is divided into two paths by the power split device 52. One is a path transmitted to the drive wheel 54, and the other is a path transmitted to the first MG2.
- Each of the first MG2 and the second MG4 is an AC rotating electric machine, for example, a three-phase AC rotating electric machine including a rotor in which a permanent magnet is embedded.
- First MG 2 generates power using the power of engine 56 divided by power split device 52. For example, when the SOC (State of Charge) indicating the remaining capacity of the main battery 42 becomes lower than a predetermined value, the engine 56 is started and power is generated by the first MG 2, and the generated power is used as the main battery 42. To be supplied.
- SOC State of Charge
- the second MG 4 generates a driving force using the power supplied from the second inverter 14.
- the driving force of the second MG 4 is transmitted to the driving wheel 54.
- the second MG 4 is driven by the drive wheels 54, and the second MG 4 operates as a generator. In this way, the second MG 4 operates as a regenerative brake that converts braking energy into electric power.
- the electric power generated by the second MG 4 is supplied to the second inverter.
- the electric power supplied to the second inverter is supplied to the main battery 42 via the boost converter 22.
- the power split device 52 is a planetary gear including a sun gear, a pinion gear, a carrier, and a ring gear (all not shown).
- the pinion gear engages with the sun gear and the ring gear.
- the carrier supports the pinion gear so as to be capable of rotating, and is connected to the crankshaft of the engine 56.
- the sun gear is connected to the rotation shaft of the first MG2.
- the ring gear is connected to the rotation shaft of the second MG 4.
- first inverter 12 and second inverter 14 are connected in parallel to main positive bus MPL and main negative bus MNL.
- First inverter 12 converts the DC power supplied from boost converter 22 into AC power and outputs the AC power to first MG 2.
- Second inverter 14 converts the DC current supplied from boost converter 22 into AC power and outputs the AC power to second MG 4.
- first inverter 12 converts AC power generated in the first MG 2 into DC power and outputs the DC power to the boost converter 22.
- Second inverter 14 converts AC power generated in second MG 4 into DC power and outputs the DC power to boost converter 22.
- Each of the first inverter 12 and the second inverter 14 is composed of a bridge circuit including switching elements for three phases, for example.
- First inverter 12 drives first MG2 by performing a switching operation in accordance with control signal PWI1 from ECU 200.
- Second inverter 14 drives second MG 4 by performing a switching operation in accordance with control signal PWI 2 from ECU 200.
- ECU 200 calculates vehicle required power Ps based on detection signals (for example, a signal indicating the amount of depression of a brake pedal, an accelerator pedal, etc.) and travel conditions, etc., not shown, and based on the calculated vehicle required power Ps.
- detection signals for example, a signal indicating the amount of depression of a brake pedal, an accelerator pedal, etc.
- travel conditions, etc. not shown
- the torque target value and the rotational speed target value of the first MG2 and the second MG4 are calculated.
- ECU 200 controls first inverter 12 and second inverter 14 such that the generated torque and rotation speed of first MG2 and second MG4 become target values.
- the main battery 42 is a rechargeable DC power source, for example, a secondary battery such as a nickel metal hydride battery or a lithium ion battery, or a large capacity capacitor.
- Main battery 42 is connected to boost converter 22 via SMR 32.
- main battery 42 is mounted on vehicle 100 as a main power source.
- the present invention is not particularly limited to such a configuration.
- main battery 42 In addition to main battery 42, One or two or more sub-batteries may be mounted.
- SMR 32 is based on a control signal S1 from ECU 200, and is in a conductive state in which main battery 42 and boost converter 22 are electrically connected, or in a disconnected state in which main battery 42 and boost converter 22 are electrically disconnected. The state is switched from one state to the other state.
- Boost converter 22 is connected to main positive bus MPL and main negative bus MNL. Boost converter 22 performs voltage conversion between main battery 42 and main positive bus MPL and main negative bus MNL based on control signal PWC1 from ECU 200.
- Smoothing capacitor 16 is connected between main positive bus MPL and main negative bus MNL, and reduces power fluctuation components included in main positive bus MPL and main negative bus MNL.
- the ECU 200 is further connected with a current sensor 84, a voltage sensor 86, and a temperature sensor 88.
- Current sensor 84 detects current IB from main battery 42 to boost converter 22 and transmits a signal indicating detected current IB to ECU 200.
- Voltage sensor 86 detects voltage VB of main battery 42 and transmits a signal indicating detected voltage VB to ECU 200.
- Temperature sensor 88 detects temperature TB of main battery 42 and transmits a signal indicating detected temperature TB to ECU 200.
- ECU 200 calculates the SOC of main battery 42 based on current IB detected by current sensor 84 and voltage VB detected by voltage sensor 86. ECU 200 may calculate the SOC of main battery 42 based on temperature TB of main battery 42 in addition to current IB and voltage VB.
- the ECU 200 calculates the SOC of the main battery 42 based on OCV (Open Circuit Voltage).
- the current sensor 84 has been described as detecting the current of the positive electrode line.
- the present invention is not particularly limited to this.
- the current sensor 84 may detect the current of the negative electrode line. Good.
- ECU 200 generates control signal PWC1 for controlling boost converter 22 based on vehicle required power Ps. ECU 200 transmits the generated control signal PWC1 to boost converter 22, and controls boost converter 22.
- the external power source 60 is a power source provided outside the vehicle 100, and may be an AC power source such as a commercial power source, for example.
- the external power source 60 is connected to the charging plug 62 via a charging cable.
- the charging plug 62 has a shape that can be connected to the charging device 50.
- the charging device 50 charges the main battery 42 using the power of the external power source 60 in accordance with the control signal CHG from the ECU 200 after the charging plug 62 is connected.
- the charging device 50 includes a connection confirmation sensor 66 for detecting that the charging plug 62 and the charging device 50 are connected.
- the connection confirmation sensor 66 is an electric circuit that conducts when the charging plug 62 and the charging device 50 are connected.
- Connection confirmation sensor 66 transmits to ECU 200 a signal C1 indicating that charging plug 62 and charging device 50 are connected.
- the ECU 200 continuously executes the first charging control and the second charging control when the charging plug 62 is connected to the charging device 50, thereby satisfying the SOC of the main battery 42. Charge the battery so that it is in a charged state.
- the fully charged state is a state where the SOC becomes the upper limit value.
- the upper limit value is not limited to SOC 100%, and may be a value smaller than 100%.
- the ECU 200 charges the main battery 42 so that the charging power is constant during the execution of the first charging control and the second charging control. For example, at time T (0), when the first plug control is executed when the charging plug 62 is connected to the charging device 50, the main battery 42 is charged so that the charging power is constant at P (0). Is done.
- the voltage V and the current I change so that the product of the voltage V and the current I becomes the charging power P (0).
- the voltage V increases so as to become higher than the voltage V (0) as time passes after charging is started at the time T (0) with the voltage V (0) as the initial voltage.
- the current I rises from the current I (0) as time passes after charging is started with the current I (0) as the initial current at time T (0).
- the main battery 42 is charged when the charging power P and the current I are negative values.
- 1st charge control is charge control which performs charge by the upper limit of charge power P.
- ECU 200 sets the smaller one of the upper limit value of the output of charging device 50 and the upper limit value of the charging power acceptable by main battery 42 as the upper limit value of charging power P.
- the upper limit value of the output of the charging device 50 is This is smaller than the upper limit value of the output of the charging device 50 when the electric device is not used.
- the upper limit value of the output of the charging device 50 varies depending on whether or not the electric device is used.
- the output of the charging device 50 becomes a charging power lower than the set charging power, and changes so as to converge to the set charging power with the passage of time.
- the upper limit value of the output of the charging device 50 varies from the beginning of the operation until it converges to the set charging power.
- the charging device 50 performs a save operation when the charging device 50 is overheated or when the main battery 42 is overheated. Therefore, the charging device 50 outputs charging power lower than the set charging power to the main battery 42. The charging device 50 may return to the set charging power when the overheating state of the charging device 50 or the main battery 42 is resolved. Thus, the upper limit value of the output of the charging device 50 varies depending on whether or not the save operation is performed.
- the upper limit value of the charging power that can be accepted by the main battery 42 varies depending on the current SOC and temperature TB of the main battery 42.
- the charging power P may fluctuate. Therefore, when the first charging control is executed, the main battery 42 may be charged with a charging power lower than the assumed charging power.
- the end of the first charging control is determined based on a voltage VB (hereinafter referred to as CCV) measured by the voltage sensor 86 during the execution of the first charging control.
- the CCV threshold value corresponding to the target SOC for ending the first charging control varies depending on the fluctuation of the charging power
- the CCV is When the charging is completed at the time when the threshold value is exceeded, the main battery 42 may be charged beyond the target SOC.
- shaft of FIG. 3 shows CCV.
- the horizontal axis in FIG. 3 indicates time.
- OCV open voltage
- the threshold value of CCV corresponding to the target SOC when charging power P is 500 W is voltage V (2).
- the voltage V (2) is a value obtained by adding ⁇ V (0) to the voltage V (1).
- ⁇ V (0) is the amount of change in voltage based on internal resistance and polarization.
- ECU 200 starts the SOC of main battery 42 when CCV becomes equal to or higher than voltage V (2) at time T (2) after charging using external power supply 60 is started, as shown by the broken line in FIG.
- the charging control is terminated assuming that the target SOC has been reached.
- ECU 200 determines that the SOC of main battery 42 has reached the target SOC when CCV becomes equal to or higher than voltage V (2) at time T (3) after charging using external power supply 60 is started. End charging control.
- the voltage change amount is ⁇ V (1) smaller than ⁇ V (0). Therefore, when the CCV becomes equal to or higher than the voltage V (2), the OCV is a voltage V (3) higher than the voltage V (1), and is charged beyond the target SOC.
- the ECU 200 detects the actual voltage detected by the voltage sensor 86 during execution of the first charging control and the open voltage of the main battery 42 when the charging state of the main battery 42 is the target charging state. Is compared with the threshold value OCV (0), and the first charge control is terminated when the actual voltage is equal to or higher than the first threshold value.
- the target charged state is the fully charged state of the main battery 42.
- the ECU 200 executes the second charging control for charging the main battery 42 so that the charging power becomes constant after the first charging control is finished.
- the ECU 200 ends the second charge control when the actual voltage detected by the voltage sensor 86 during execution of the second charge control is equal to or greater than the threshold value CCV (0).
- the threshold value CCV (0) is an actual voltage during execution of the second charging control corresponding to the case where the charging state of the main battery 42 is a fully charged state, and is larger than the threshold value OCV (0). It is.
- FIG. 4 shows a functional block diagram of ECU 200 that is the vehicle control apparatus according to the present embodiment.
- ECU 200 includes a plug connection determination unit 300, a first charge control unit 302, a first end determination unit 304, a second charge control unit 306, and a second end determination unit 308.
- the plug connection determination unit 300 determines whether or not the charging plug 62 and the charging device 50 are connected. Specifically, the plug connection determination unit 300 determines that the charging plug 62 and the charging device 50 are connected when the signal C1 is received from the connection confirmation sensor 66. Note that the plug connection determination unit 300 may turn on the plug connection determination flag when it is determined that the charging plug 62 and the charging device 50 are connected, for example.
- the first charging control unit 302 executes the first charging control when it is determined that the charging plug 62 and the charging device 50 are connected. Note that the first charging control unit 302, in addition to the case where it is determined that the charging plug 62 and the charging device 50 are connected, for example, an operation member (for example, a button or a lever) for the user to start charging.
- the first charging control may be executed when an operation signal transmitted to the ECU 200 is received by operating. Further, the first charging control unit 302 may execute the first charging control when the plug connection determination flag is turned on from off, for example.
- the 1st charge control is control which charges the main battery 42 with the upper limit of the charging power P using the external power supply 60 as above-mentioned.
- the first charging control unit 302 sets the smaller one of the upper limit value of the charging power P based on the state of the charging device 50 and the upper limit value of the charging power P that can be received by the main battery 42 as the upper limit value of the charging power. As a result, the first charge control is executed.
- the state of the charging device 50 refers to the presence / absence of an electric device that is used in parallel with charging when a commercial power source is used as the external power source 60, the presence / absence of a decrease in output at the beginning of charging, or execution of a save operation during overheating.
- the output of the charging device 50 is limited.
- the first end determination unit 304 determines whether or not to end the first charge control. Specifically, the first end determination unit 304 determines that the voltage VB (that is, CCV) detected by the voltage sensor 86 during the execution of the first charge control is equal to or higher than the threshold value OCV (0). In the case, the first charging control is terminated.
- the threshold value OCV (0) is a target SOC when the main battery 42 is charged by the first charge control. OCV (0) corresponding to the target SOC is derived from the relationship between OCV and SOC as shown in FIG. 5, for example.
- the vertical axis in FIG. 5 indicates OCV, and the horizontal axis in FIG. 5 indicates SOC.
- the SOC corresponds to 0% when the OCV is the voltage V (4), and the SOC corresponds to 100% when the OCV is the voltage V (5).
- the OCV threshold OCV (0) corresponding to the target SOC is derived from the relationship of FIG.
- the relationship between OCV and SOC is not particularly limited to the relationship shown in FIG. Therefore, for example, OCV and SOC may be in a proportional relationship.
- SOC corresponding to a full charge state may be sufficient, and SOC lower than SOC corresponding to a full charge state may be sufficient, for example.
- the first end determination unit 304 may end the first charge control and turn on the first charge control end flag when the CCV is equal to or greater than the threshold value OCV (0). Further, the first end determination unit 304 compares CCV and OCV (0) when the upper limit value of the charging power is limited from the standard value based on the state of the charging device 50 and the state of the main battery 42. The first charging control may be terminated when the CCV is greater than or equal to OCV (0).
- the standard value of the upper limit value of the charging power is a case where the charging power acceptable to the main battery 42 is larger than the upper limit value of the output of the charging device 50, and other electric devices are operating.
- the second charge control unit 306 executes the second charge control after the first charge control is completed. Note that the second charge control unit 306 may execute the second charge control when the first charge control end flag is turned on from off, for example.
- the second charging control is a control for charging the main battery 42 using the external power source 60 and setting the charging power P to a constant value P (0).
- charging power P (0) is described as being 500 W, for example, but is not particularly limited thereto.
- the second charging control has been described as charging the main battery 42 with the charging power set to a constant value P (0).
- the second charging control is particularly limited to such charging control. is not.
- the second charging control may be a control for charging the main battery 42 with a constant voltage.
- the second end determination unit 308 ends the second charge control when the CCV becomes equal to or greater than the CCV threshold CCV (0) corresponding to the fully charged state during the execution of the second charge control.
- the threshold value CCV (0) is a CCV threshold value when the charging power P is P (0) and the SOC of the main battery 42 is in a fully charged state.
- Threshold value CCV (0) is a value obtained by adding ⁇ V when charging power P is P (0) to OCV (1) corresponding to the fully charged state.
- ⁇ V is a voltage change amount including the internal resistance component and the polarization component as described above, and is a value depending on the temperature TB.
- the second end determination unit 308 calculates ⁇ V corresponding to the temperature TB from the map showing the relationship between the temperature TB and ⁇ V shown in FIG.
- the vertical axis in FIG. 6 represents ⁇ V
- the horizontal axis in FIG. 6 represents the temperature TB.
- the relationship between the temperature TB and ⁇ V is that ⁇ V (2) corresponding to the temperature TB (0) is ⁇ V (3) corresponding to the temperature TB (1) higher than the temperature TB (0). It becomes a bigger relationship.
- the second end determination unit 308 calculates ⁇ V (4) from the map shown in FIG. CCV (0) is calculated by adding ⁇ V (4) to OCV (1) corresponding to.
- the second end determination unit 308 ends the second charge control and turns off the first charge control end flag when the CCV becomes equal to or greater than the threshold value CCV (0) during the execution of the second charge control. You may make it do.
- the second end determination unit 308 cannot secure the charging power assumed when the second charging control is executed (for example, when the charging power P is equal to or lower than a predetermined value lower than 500 W). You may make it complete
- plug connection determination unit 300 is included in ECU 200.
- first charge control unit 302, first end determination unit 304, second charge control unit 306, and second end determination unit 308 are all included in ECU 200.
- stored in memory you may make it implement
- Such a program is recorded on a storage medium and mounted on the vehicle.
- step (hereinafter, step is referred to as S) 100 ECU 200 determines whether or not charging plug 62 and charging device 50 are connected. If charging plug 62 and charging device 50 are connected (YES in S100), the process proceeds to S102. If not (NO in S100), the process returns to S100.
- the ECU 200 executes the first charging control. Since 1st charge control is as having mentioned above, the detailed explanation is not repeated.
- ECU 200 determines whether or not CCV is equal to or greater than threshold value OCV (0). If CCV is equal to or greater than threshold value OCV (0) (YES in S104), the process proceeds to S106. If not (NO in S104), the process returns to S102.
- ECU 200 ends the first charging control.
- ECU 200 executes the second charging control. Since the second charging control is as described above, detailed description thereof will not be repeated.
- ECU 200 determines whether or not charging is completed. ECU 200 determines that charging has been completed when CCV is equal to or greater than threshold value CCV (0). If it is determined that charging is complete (YES in S110), the process proceeds to S112. If not (NO in S110), the process returns to S108. In S112, ECU 200 ends the second charging control.
- ECU 200 that is the vehicle control apparatus according to the present embodiment based on the above-described structure and flowchart will be described with reference to FIG.
- the main battery 42 is charged using the smaller one of the upper limit value of the output of the charging device 50 and the upper limit value of the power acceptable by the main battery 42 as the charging power P.
- both CCV and OCV increase with the passage of time.
- the first charge control is terminated (S106).
- the first charge control end flag is turned on together with the end of the first charge control.
- the second charging control is executed (S108).
- P (0) for example, 500 W
- the main battery 42 is charged with a constant value P (0) (for example, 500 W) as charging power. Since the charging power of the second charging control is smaller than the charging power of the first charging control, the time variation of the CCV after the start of the second charging control is smaller than the time variation of the CCV when the first charging control is executed. Thus, the time change amount of the OCV after the start of the second charge control is also smaller than the time change amount of the OCV of the first charge control execution.
- the second charge control is terminated (S112).
- the first charge control end flag is turned off together with the end of the second charge control.
- the SOC of the main battery 42 is fully charged.
- the CCV is compared with the OCV threshold OCV (0) corresponding to the CCV and the target SOC during the execution of the first charge control.
- the second charge control is ended.
- the SOC of the main battery can be fully charged with high accuracy.
- the configuration of the vehicle 100 is not particularly limited to the configuration shown in FIG. 1, and may be the configuration of an electric vehicle shown in FIG. 9, for example.
- vehicle 100 shown in FIG. 9 has a point that first MG 2 is a rotating electrical machine for driving driving wheel 54, second MG 4, second inverter 14, power The difference is that the dividing device 52 and the engine 56 are not provided. Since the configuration other than that is similar to the configuration of vehicle 100 shown in FIG. 1, detailed description thereof will not be repeated.
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Abstract
Description
さらに好ましくは、制御部は、充電装置の状態および蓄電装置の状態に基づいて充電電力の上限値が標準値より制限された場合に、第1充電制御の実行中に検出部によって検出された実電圧が第1しきい値以上となる場合に第1充電制御を終了させる。
Claims (7)
- 駆動源となる回転電機(4)と、前記回転電機(4)に電力を供給するための蓄電装置(42)と、外部電源(60)を用いて前記蓄電装置(42)を充電するための充電装置(50)とを含む車両(100)に搭載された車両用制御装置であって、
前記蓄電装置(42)の実電圧を検出するための検出部(86)と、
前記外部電源(60)と前記充電装置(50)とが接続された場合に、前記外部電源(60)を用いた充電電力の上限値で前記蓄電装置(42)を充電するための第1充電制御を実行するための制御部(200)とを含み、
前記制御部(200)は、前記第1充電制御の実行中に前記検出部(86)によって検出された前記実電圧と前記蓄電装置(42)の充電状態が目標の充電状態である場合の前記蓄電装置(42)の開放電圧である第1しきい値とを比較し、前記実電圧が前記第1しきい値以上となる場合に前記第1充電制御を終了させる、車両用制御装置。 - 前記制御部(200)は、前記充電装置(50)の状態に基づく充電電力の上限値と、前記蓄電装置(42)において受け入れ可能な充電電力の上限値とのうちのいずれか小さい方を前記充電電力の上限値として前記第1充電制御を実行する、請求の範囲第1項に記載の車両用制御装置。
- 前記目標の充電状態は、前記蓄電装置(42)の満充電状態である、請求の範囲第1項に記載の車両用制御装置。
- 前記制御部(200)は、前記充電装置(50)の状態および前記蓄電装置(42)の状態に基づいて前記充電電力の上限値が標準値より制限された場合に、前記第1充電制御の実行中に前記検出部(86)によって検出された前記実電圧が前記第1しきい値以上となる場合に前記第1充電制御を終了させる、請求の範囲第1項に記載の車両用制御装置。
- 前記制御部(200)は、前記第1充電制御が終了した後に充電電力が一定になるようにして前記蓄電装置(42)を充電するための第2充電制御を実行し、前記第2充電制御の実行中に前記検出部(86)によって検出された前記実電圧が第2しきい値以上となる場合に前記第2充電制御を終了させ、
前記第2しきい値は、前記蓄電装置(42)の充電状態が満充電状態である場合に対応した前記第2充電制御の実行中の実電圧であって、前記第1しきい値よりも大きい値である、請求の範囲第1項に記載の車両用制御装置。 - 前記制御部(200)は、前記充電電力が予め定められた値以下である場合に前記第2充電制御を終了させる、請求の範囲第5項に記載の車両用制御装置。
- 駆動源となる回転電機(4)と、前記回転電機(4)に電力を供給するための蓄電装置(42)と、外部電源(60)を用いて前記蓄電装置(42)を充電するための充電装置(50)とを含む車両(100)の車両用制御方法であって、
前記蓄電装置(42)の実電圧を検出するステップと、
前記外部電源(60)と前記充電装置(50)とが接続された場合に、前記外部電源(60)を用いた充電電力の上限値で前記蓄電装置(42)を充電するための第1充電制御を実行するステップと、
前記第1充電制御の実行中に前記実電圧を検出するステップにて検出された前記実電圧と前記蓄電装置(42)の充電状態が目標の充電状態である場合の前記蓄電装置(42)の開放電圧である第1しきい値とを比較し、前記実電圧が前記第1しきい値以上となる場合に前記第1充電制御を終了させるステップとを含む、車両用制御方法。
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US13/702,819 US8818598B2 (en) | 2010-07-05 | 2010-07-05 | Vehicle control device and vehicle control method |
CN201080067911.6A CN102971935B (zh) | 2010-07-05 | 2010-07-05 | 车辆用控制装置以及车辆用控制方法 |
EP10854402.4A EP2592716B1 (en) | 2010-07-05 | 2010-07-05 | Control device for vehicle and control method for vehicle |
PCT/JP2010/061392 WO2012004846A1 (ja) | 2010-07-05 | 2010-07-05 | 車両用制御装置および車両用制御方法 |
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