JP2010220407A - Device for drive and control of vehicle-mounted equipment in plug-in hybrid vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle-mounted equipment driving/controlling device in a plug-in hybrid vehicle that gives preference to charging of a secondary battery, executed by an external power supply, over drive of vehicle-mounted equipment so as to make the vehicle interior into a comfortable environment and to raise the temperature of a catalyst for exhaust-gas purification to the temperature, which allows exhaust-gas purification, before the start of the next traveling while controlling the charging without affecting traveling. <P>SOLUTION: The device includes: an external power supply connection detecting device 18 for detecting connection of a power supply device 16 to an external power supply; a next traveling scheduled distance setting device 24 for setting a next traveling scheduled distance; a device 14 for detecting a charging amount of a secondary battery; and a control unit 20 for controlling drive of the vehicle-mounted equipment. The control unit 20 calculates a required charging amount to the secondary battery 12 from the next traveling scheduled distance set into the next traveling scheduled distance setting device 24. The control unit compares the calculation results with the detection results of the device 14 for detecting the charging amount of the secondary battery so as to inhibit drive of the vehicle-mounted equipment while the charging amount of the second battery does not reach the required charging amount and to permit drive of the vehicle-mounted equipment while the charging amount of the secondary battery exceeds the required charging amount. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an in-vehicle device drive control apparatus in a plug-in hybrid vehicle that can charge a secondary battery and drive an in-vehicle device by connecting to an external power source, and in particular, the in-vehicle charging of the secondary battery by an external power source. Prioritize the driving of the equipment and control the vehicle so that it does not hinder the driving, and by operating on-board equipment such as an air conditioner and exhaust gas purification catalyst pre-heating device to make the interior of the vehicle comfortable, or for exhaust gas purification The present invention relates to an in-vehicle device drive control device in a plug-in hybrid vehicle that can raise a catalyst to a temperature capable of purifying exhaust gas.

  In recent years, it can be expected to improve fuel efficiency and prevent air pollution. Therefore, the electricity generated by the engine is stored in the secondary battery. If torque is required, the engine can generate torque during constant speed driving on highways. In a state where it is not so necessary, a so-called hybrid vehicle that is driven by a motor is used. Recently, as described in Patent Document 1, a secondary battery is charged from an external power source and travels as an electric vehicle using only a motor at a short distance. A plug-in hybrid vehicle that is driven by an engine is also proposed.

  On the other hand, an air conditioner provided in an automobile and a preheating device that activates a catalyst for exhaust gas purification can be driven by a secondary battery (battery) provided in the automobile, but uses a large amount of power. Therefore, it is common to operate the engine after the engine is started, because the electricity stored in the battery may be used up. However, in this way, when the air conditioner is driven for the first time when the engine is started or when the exhaust gas purification catalyst preheating device is energized, if it starts immediately, it will be cold in winter, hot in summer, and further a catalyst for exhaust gas purification. Since it takes time to activate the exhaust gas, the exhaust gas in the meantime is discharged in a dirty state, and extra fuel is required when warming up to prevent them.

  Therefore, for example, Patent Document 2 discloses that the battery can be charged by connecting an external power source via a charging unit, and when the passenger gets out of the vehicle, the heating is performed before the next ride from the control panel. By setting the pre-air conditioner mode that automatically starts operation, when the pre-air conditioner mode start command signal is supplied from the pre-air conditioner timer to the air conditioner controller, the air conditioner controller sends the charge signal from the charging unit. After confirming the above, there is shown an air conditioner for an electric vehicle in which the air conditioner is driven prior to the next boarding based on electric power supplied from an external power source.

  In Patent Document 3, a connector connected to the power supply system on the vehicle side is provided on the vehicle, while an external power supply facility that supplies power through the connector is provided in the parking lot, and the battery voltage is detected by an AC / DC inverter. The same voltage is output to the vehicle-side power supply system, and power is supplied to the vehicle from the outside via the connector, and the vehicle engine is driven while parking by driving on-board equipment such as air conditioners, acoustic devices, and lighting equipment. An in-vehicle device drive system with an external power supply that can be stopped is shown.

  Further, Patent Document 4 includes an input unit that can be connected to an external power source, an output unit that is connected to a load device, and a backup battery that can be charged by the external power source, and connects the input unit and the output unit to connect the external power source. A main closed circuit for supplying power to the load device, a backup power supply circuit for supplying power from the backup battery to the load device, a supply disable display circuit for notifying a power supply disable state, a backup power supply circuit, and a supply disable display circuit And a relay drive circuit that drives the relay switch, and can be connected to an external power source to supply power to the load device and can be supplied independently. It does not require idling operation of the engine to supply it, and even if the engine is stopped, it will be a load device for a certain period of time You can continue to power supply, and the portable power supply is shown.

JP 2008-100635 A JP-A-8-20239 Japanese Patent Laid-Open No. 11-278178 JP 2008-74258 A

  However, in the electric vehicle air conditioner disclosed in Patent Document 2, the heating operation is automatically started prior to the next boarding, and the interior of the vehicle can be brought to a comfortable temperature before boarding. ) Does not determine whether the battery is charged as much as possible for the next scheduled driving distance, so depending on the amount of charge of the battery (secondary battery), comfort in the vehicle is achieved, but charging required for traveling is not performed There is a possibility that the situation will occur.

  In addition, the in-vehicle device drive system and the portable power supply device using an external power source described in Patent Literature 3 and Patent Literature 4 supply electric power to the vehicle from the outside by the external power source or the portable power device, and the electric power is used for the air conditioner, the acoustic device, and the illumination. It only drives in-vehicle devices such as appliances, and it does not mention that the vehicle interior is brought to a comfortable temperature before traveling or the catalyst for purifying exhaust gas is warmed to realize comfortable driving.

  Therefore, in the present invention, in a plug-in hybrid vehicle capable of charging a secondary battery and driving an in-vehicle device by connecting to an external power source, the charging of the secondary battery by the external power source has priority over the driving of the in-vehicle device. Operate on-board equipment such as an air conditioner and exhaust gas purification catalyst pre-heating device to make the interior of the vehicle a comfortable environment or control the exhaust gas purification catalyst at the exhaust gas purification temperature until the next start of travel while controlling so that there is no hindrance to travel It is an object to provide an in-vehicle device drive control device in a plug-in hybrid vehicle that can be raised to a maximum.

In order to solve the above problems, an in-vehicle device drive control device in a plug-in hybrid vehicle according to the present invention is as follows.
In-vehicle environmental comfort equipment including an air conditioner, and in-vehicle equipment including a travel-related auxiliary equipment including a catalyst preheating device for exhaust gas purification, an engine, a motor, and a secondary battery capable of supplying power to the motor and the in-vehicle equipment A power supply device for supplying power from an external power source for charging the secondary battery and driving the in-vehicle device, and an in-vehicle device drive control device in a plug-in hybrid vehicle,
The on-vehicle device drive control device includes: an external power connection detection device that detects connection of the power supply device to an external power source; a next travel scheduled distance setting device that sets a next travel planned distance; and a charge amount of the secondary battery And a control unit that controls driving of the in-vehicle device, and the control unit calculates a travelable distance from the charge amount detected by the secondary battery charge amount detection device, and the calculated travel enablement Comparing the distance and the next scheduled travel distance set in the next scheduled travel distance setting device, the driving prohibition of the in-vehicle device is performed in a state where the travelable distance does not reach the planned next travel distance. It is comprised so that the drive of the said vehicle equipment may be performed.

  Thus, the travelable distance is calculated from the charge amount detected by the secondary battery charge amount detection device, the travelable distance is compared with the next travel planned distance, and the travelable distance does not reach the next travel planned distance In other words, prohibition of driving of the in-vehicle device when the secondary battery charge amount does not reach the required charge amount, and driving of the in-vehicle device when the required charge amount is exceeded (the travelable distance has reached the next planned travel distance). By giving permission, the charging of the secondary battery has priority over the operation of the in-vehicle device, so the next mileage even though the in-vehicle environment has become comfortable and the exhaust gas purification catalyst has risen to the exhaust gas purification temperature. It is possible to provide an in-vehicle device drive control device in a plug-in hybrid vehicle that does not cause a situation in which charging sufficient to travel the vehicle is not performed.

  And the said control part is comprised so that the drive prohibition of the said vehicle equipment may be continued until the said secondary battery will be in a full charge state in the state without the next scheduled travel distance setting to the said next planned travel distance setting apparatus. Thus, in a state where it is not known how far the vehicle will travel, charging can be continued until the secondary battery is fully charged in this way, thereby preventing troubles from occurring in the next traveling.

  The in-vehicle device drive control device further includes an outside air temperature detection device and a next operation start time setting device for setting a next operation start time, and the control unit detects the outside air temperature in a drive permission state of the in-vehicle device. Based on the detected temperature from the device, calculate the time required for the interior environment comfortable device to make the interior of the vehicle comfortable and the time required for the travel-related auxiliary device to be in a normal operating state, and start the next operation From the next driving start time set in the time setting device and the calculated time, the driving start time of the in-vehicle device is such that the in-vehicle environment is made comfortable at the next driving start time and the travel-related auxiliary device is operating normally. The vehicle interior environment is in a comfortable state at the start of traveling, and the exhaust gas purification catalyst is activated to discharge dirty exhaust gas. DOO without, also can be prevented by consuming extra fuel by the warm-up operation.

  As described above, the in-vehicle device drive control device in the plug-in hybrid vehicle according to the present invention compares the charge amount of the secondary battery with the required charge amount, and continues the charge and makes the vehicle environment comfortable according to the comparison result. Since driving of on-vehicle equipment such as equipment and travel-related auxiliary equipment is selected, charging of the secondary battery is always prioritized, and it is less likely to interfere with travel by the secondary battery. Also, when the required amount of rechargeable battery is charged, the on-board equipment can be driven before the next run to make the interior environment comfortable and to activate the exhaust gas purification catalyst. Therefore, it is possible to provide an in-vehicle device drive control device in a plug-in hybrid vehicle that can prevent excessive fuel consumption during warm-up operation.

It is a schematic block diagram of the vehicle equipment drive control apparatus in the plug-in hybrid vehicle which becomes this invention. It is a flowchart of the charge using the vehicle equipment drive control apparatus in the plug-in hybrid vehicle which becomes this invention, and the drive of a vehicle equipment.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Absent.

  In the present invention, an in-vehicle environment device including an air conditioner and an in-vehicle device including a travel-related auxiliary device including a catalyst preheating device for exhaust gas purification, an engine, a motor, and electric power to the motor and the in-vehicle device. In a plug-in hybrid vehicle having a rechargeable battery and a power supply device that supplies power from an external power source for charging the secondary battery and driving the in-vehicle device, the power supply device is connected to the external power source. An external power connection detection device for detecting, a next travel planned distance setting device for setting a next travel planned distance, a charge amount detection device for the secondary battery, and a control unit for controlling driving of the in-vehicle device. The travelable distance is calculated from the amount of charge detected by the secondary battery charge amount detection device, and the next travel planned distance set in the next travel planned distance setting device is calculated. In comparison with the operation of the in-vehicle device, the in-vehicle device is prohibited to drive when the travelable distance does not reach the next planned travel distance, and the in-vehicle device is permitted to drive. Prioritize battery charging, so that the environment inside the vehicle is comfortable and the exhaust gas purification catalyst has risen to the exhaust gas purifying temperature, but the battery is not charged enough to travel the next mileage. It is a thing.

  FIG. 1 is a schematic block diagram of an in-vehicle device drive control device in a plug-in hybrid vehicle according to the present invention configured according to such a concept. In the figure, 10 is an external power plug for connecting to the power source of a home or other rechargeable station, 12 is a rechargeable secondary battery (battery), 14 is a secondary battery (battery) 12 charge control device 13. In order to detect the state of charge (SOC) of the secondary battery 12, a detection device for the open-circuit voltage and the current that flows during charging and discharging is provided, and charging is performed from the open-circuit voltage and the integrated current value. An SOC detection unit 16 for calculating a state, 16 is a power supply device, and this power supply device 16 has an AC / DC inverter or the like and is configured to output the same voltage as the voltage of the secondary battery (battery) 12. .

  Reference numeral 18 denotes an external power connection detection device that detects whether or not the external power plug 10 of the power supply device 16 is connected to an external power source. Reference numeral 20 denotes a control unit. The control unit 20 is connected to the next operation start time setting device 22. The next driving start time set, the next driving planned distance set in the next driving planned distance setting device 24, the charge amount of the secondary battery (battery) 12 detected by the charging control device 14, and the outside air temperature detecting device 26 detected. When the charge amount of the secondary battery (battery) 12 is not a sufficient charge amount for traveling the next travel distance using the outside air temperature or the like, the vehicle interior comfort device 28 such as the air conditioner 282 and the seat heat device 284, the catalyst If the driving-related auxiliary devices 30 such as the preheating device 302 and the car window freeze releasing device 304 are prohibited from driving and a sufficient amount of charge is obtained, the vehicle will be driven at the next driving start time. Drive the in-vehicle equipment to be seen before the next operation start time so that the environmental comfort equipment can ensure that the temperature inside the car is a comfortable temperature, that is, a comfortable environment, or that the exhaust gas purification catalyst is activated. Control and so on. The next operation start time setting device 22 also has a function of setting a time at which the target device starts operation, such as a timer device such as an air conditioner.

  In the in-vehicle device drive control apparatus in the plug-in hybrid vehicle according to the present invention configured as described above, the driving of the vehicle is finished, the passenger connects the external power plug 10 to, for example, a household power source, and the next day operation start time. (Next driving start time) is set in the next driving start time setting device 22, the scheduled driving distance is set in the next scheduled driving distance setting device 24, and the in-vehicle device operation setting is set for the next day. Then, when the control unit 20 confirms that the external power supply connection detection device 18 is connected to the external power supply from the state of the power supply device 16, the charge amount detection function provided in the charge control device 14 uses the charge detection function from the SOC detection unit 13. Based on the information, the charge amount of the secondary battery 12 is detected.

  Then, the control unit 20 converts the charge amount of the secondary battery 12 detected by the charge amount detection function into a travelable distance, and the next travel scheduled distance set in the travelable distance and the next travel planned distance setting device 24. If the travelable distance does not reach the planned travel distance for the next time, the air conditioner 282, the in-vehicle environment comfort device 28 such as the seat heat device 284, the catalyst preheating device 302, the vehicle window freezing release device 304, etc. Driving of the travel-related auxiliary device 30 is prohibited, and the secondary battery (battery) 12 is charged by an external power source supplied from the power supply device 16 by the charge control device 14.

  When the charging amount of the secondary battery (battery) 12 increases due to this charging and the travelable distance exceeds the next travel planned distance set in the next travel planned distance setting device 24, the controller 20 detects the outside air temperature detection device. From the outside air temperature detected by the vehicle 26, the time required for the vehicle interior comfort device 28 to become a comfortable environment and the time required for the travel-related auxiliary device 30 to be in a normal operation state are calculated, and the next driving is started. From the next driving start time set in the time setting device 22 and the calculated time, the driving start time of the in-vehicle environment comfort device 28 and the travel-related auxiliary device 30, that is, the inside of the vehicle at the next driving start time And the time at which the travel-related auxiliary device 30 is in a normal operation state is determined.

  Then, when that time comes, the control unit 20 supplies power from the power supply device 16 via the control unit 20 to the air conditioner 282, the seat heat device 284, and the travel-related auxiliary device 30 that constitute the in-vehicle environmental comfort device 28. These are sent to the pre-heating device 302, the vehicle window freeze releasing device 304, etc., to drive them. Therefore, the in-vehicle device drive control device in the plug-in hybrid vehicle according to the present invention always gives priority to the secondary battery charging, and when the secondary battery is charged with a required amount, the in-vehicle environmental comfort device 28 and the traveling related The in-vehicle device such as the auxiliary device 30 is driven before the next run, and the interior environment can be made comfortable and the exhaust gas purification catalyst can be activated at the next start time of operation. It is possible to provide an in-vehicle device drive control device in a plug-in hybrid vehicle that can prevent consumption of excess fuel.

  FIG. 2 is a flowchart of charging using the in-vehicle device drive control device in the plug-in hybrid vehicle according to the present invention and driving of the in-vehicle device. Hereinafter, the block diagram of FIG. 1 and the flowchart of FIG. The present invention will be described in detail.

  When the on-vehicle device drive control starts in step S10, the control unit 20 first receives a signal from the external power supply connection detection device 18 in step S12, and whether the external power supply is connected, that is, the external power supply plug 10 is connected to the external power supply. It is determined whether or not the power supply device 16 outputs a voltage corresponding to the secondary battery (battery) 12 and the in-vehicle devices 28 and 30, and if not connected, the process proceeds to step S44 and the process is terminated. If it is connected, the process proceeds to step S14, and the charge control device 14 detects the remaining amount of the secondary battery (battery) 12.

  In step S16, it is determined whether or not the secondary battery (battery) 12 is fully charged. If fully charged, the process proceeds to step S28. If not fully charged, the remaining battery level detected in step S14 is used in step S18. Calculate the travelable distance. Then, the control unit 20 determines whether or not the (next time) scheduled travel distance is set in the next step S20. If it is set, the process proceeds to step S22, and if not, the process proceeds to step S24.

  When the process proceeds to step S22, the control unit 20 compares the travelable distance calculated in step S18 with the (next) planned travel distance confirmed in step S20, and {(next travel) planned distance <( Traveling) possible distance}, if yes, go to step S28, if no, go to step S24. When the process proceeds to step S24, the control unit 20 first instructs the charge control device 14 to start charging the secondary battery (battery) 12 to start (or continue) charging, and in step S26, the interior environment is made comfortable. Driving of in-vehicle devices such as the device 28 and the travel-related auxiliary device 30 is prohibited, and the process returns to step S14 to repeat the above processing. When the process proceeds to step S28, the control unit 20 first stops the charging of the secondary battery (battery) 12, and permits the driving of in-vehicle devices such as the in-vehicle environmental comfort device 28 and the travel-related auxiliary device 30 in step S30. The process proceeds to step S32.

  Then, the control unit 20 determines whether or not the operation of the in-vehicle devices 28 and 30 is set in step S32, and if not set, proceeds to step S44 to end the process, and if set, Proceed to step S34. In this step S34, it is determined whether or not the (next) operation start time is set by the next operation start time setting device (including timer) 22, and if not set, the process proceeds to step S44 and the process is terminated. If it is set, the process proceeds to step S36, where the outside air temperature detecting device 26 detects the outside air temperature.

  Then, in step S38, the control unit 20 determines that the in-vehicle temperature and the seat temperature become the comfortable temperature by the in-vehicle environment comfort device 28 such as the air conditioner 282 and the seat heat device 284 based on the detected temperature from the outside air temperature detecting device 26. And the time until the exhaust gas catalyst is activated or the vehicle window freeze is released by the travel-related auxiliary equipment 30 such as the catalyst preheating device 302 and the vehicle window freeze release device 304, and the next operation start time setting device 22 is calculated. Then, the calculated time is subtracted from the next driving start time set to, to determine the time to start driving the in-vehicle environment comfort device 28 and the travel-related auxiliary device 30 respectively.

  Then, in step S40, it is determined whether or not the time determined here has been reached, and when that time is reached, that is, before the time set in the next operation start time setting device 22, in step S42, these in-vehicle environment comforts are achieved. The driving of the device 28 and the travel-related auxiliary device 30 is started, and at the next operation start time, the interior environment is made comfortable, the exhaust catalyst is activated by the travel-related auxiliary device 30, and the vehicle window freeze is released. The process ends in step S44.

  In this way, when the amount of charge of the secondary battery does not reach the required amount of charge, driving of the in-vehicle device is prohibited, so the interior environment becomes comfortable and the exhaust gas purification catalyst rises to the exhaust gas purification temperature. However, when the vehicle is not charged enough to travel the next mileage, and when driving of the in-vehicle device is permitted, the in-vehicle environmental comfort device 28, the travel-related auxiliary device 30 starts driving before the next operation start time, and at the next operation start time, the environment inside the vehicle becomes comfortable and the exhaust gas purifying catalyst is activated to discharge dirty exhaust gas or warm up It is possible to prevent excessive fuel consumption during operation.

  In the above description, the air conditioner 282 and the seat heat device 284 are cited as the in-vehicle environmental comfort device 28. In addition, for example, a device for bringing the steering to a temperature similar to that of a human skin has been proposed by a female driver or the like. In addition to the catalyst preheating device 302 and the vehicle window freezing release device 304, it is obvious that the travel related auxiliary device 30 can be used for devices that require prior heating, such as a device for ensuring travel safety.

  According to the present invention, when charging of the secondary battery 12 is prioritized and driving of the in-vehicle device is permitted, the driving-related time, such as comfort in the vehicle environment such as temperature, activation of the exhaust gas purifying catalyst, and the like It is possible to provide a plug-in hybrid vehicle that can operate an auxiliary device and can create a comfortable driving environment.

10 External power plug 12 Secondary battery (battery)
13 SOC Detection Unit 14 Charge Control Device 16 Power Supply Device 18 External Power Connection Detection Device 20 Control Unit 22 Next Operation Start Time Setting Device (Including Timer)
24 Next scheduled travel distance setting device 26 Outside air temperature detection device 28 Interior environment comfort device 282 Air conditioning device 284 Seat heat device 30 Travel related auxiliary device 302 Catalyst preheating device 304 Car window freeze release device

Claims (3)

In-vehicle environmental comfort equipment including an air conditioner, and in-vehicle equipment including a travel-related auxiliary equipment including a catalyst preheating device for exhaust gas purification, an engine, a motor, and a secondary battery capable of supplying power to the motor and the in-vehicle equipment A power supply device for supplying power from an external power source for charging the secondary battery and driving the in-vehicle device, and an in-vehicle device drive control device in a plug-in hybrid vehicle,
The on-vehicle device drive control device includes: an external power connection detection device that detects connection of the power supply device to an external power source; a next travel scheduled distance setting device that sets a next travel planned distance; and a charge amount of the secondary battery And a control unit that controls driving of the in-vehicle device, and the control unit calculates a travelable distance from the charge amount detected by the secondary battery charge amount detection device, and the calculated travel enablement Comparing the distance and the next scheduled driving distance set in the next scheduled driving distance setting device, the driving prohibition of the in-vehicle device is performed in a state where the possible traveling distance does not reach the next planned traveling distance. A vehicle-mounted device drive control apparatus in a plug-in hybrid vehicle, characterized in that the vehicle-mounted device is allowed to drive.   The control unit is configured to continue prohibiting driving of the in-vehicle device until the secondary battery is fully charged in a state where there is no next travel planned distance setting to the next travel planned distance setting device. The in-vehicle device drive control apparatus in the plug-in hybrid vehicle according to claim 1.   The in-vehicle device drive control device further includes an outside air temperature detection device and a next operation start time setting device for setting a next operation start time, and the control unit is in a drive permission state of the in-vehicle device from the outside air temperature detection device. Based on the detected temperature of the vehicle, the time required for the vehicle interior comfort device to become a comfortable environment and the time required for the travel-related auxiliary device to be in a normal operation state are calculated, and the next operation start time setting is performed. Based on the next driving start time set in the device and the calculated time, the driving start time of the in-vehicle device is set so that the in-vehicle environment is comfortable at the next driving start time and the travel-related auxiliary devices are operating normally. The vehicle-mounted device drive control device for a plug-in hybrid vehicle according to claim 2, wherein the vehicle-mounted device drive control device is configured as described above.

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