JP5568337B2 - Electric vehicle and storage battery recovery state notification method - Google Patents

Description

  The present invention relates to an electric vehicle that uses an electric motor that drives a storage battery as a power source as a drive source or a part of the drive source, and a recovery state notification method for the storage battery.

  2. Description of the Related Art Conventionally, a control device for an electric vehicle described in Patent Document 1 below has been proposed as a control device for diagnosing the degree of deterioration of a battery in an electric vehicle including an electric motor driven by a battery (storage battery) as a power source. Yes.

  Patent Document 2 below proposes a method for controlling storage battery charging and discharging for an electric vehicle.

  According to this, when it is detected that the battery should be recovered (refreshed) in a state where the battery has discharged a predetermined number of ampere hours, a BCU (Battery Control Unit) that controls charging / discharging of the battery is performed. By performing deep battery discharge and subsequent battery charging, the battery storage capacity recovery process is performed without the intervention of the user of the electric vehicle.

Japanese Patent No. 4172222 JP 2004-7978 A

  However, in the control device of Patent Document 1, since the storage capacity of the storage battery is not restored, if it is left for a long period of time, a decrease in the storage capacity of the storage battery is promoted by overdischarge. The storage battery may not be usable.

  Further, in Patent Document 2, since the storage capacity recovery processing of the storage battery is performed without user intervention, the user is highly likely not to know the execution status of the recovery processing, and the recovery processing has not ended. In such a case, if the vehicle is left for a long time with the vehicle stopped, a decrease in the storage capacity of the storage battery is promoted by the occurrence of overdischarge, which may make the storage battery unusable.

  It is an object of the present invention to provide an electric vehicle and a storage battery recovery state notification method that can prevent the storage battery from being left for a long period of time without completing the storage capacity recovery process.

The present invention relates to an electric vehicle that uses an electric motor that drives a storage battery as a power source as a drive source or a part of the drive source, and determines whether or not it is necessary to perform a recovery process for a decrease in the storage capacity of the storage battery. And a recovery processing means for performing a recovery process for a decrease in the storage capacity of the storage battery by executing a high-power continuous discharge for supplying a current larger than a predetermined current value from the storage battery to the electric motor a predetermined number of times while the electric vehicle is traveling When the electric vehicle stops after traveling and the in-vehicle device mounted on the electric vehicle is turned off, the recovery process is not completed if the recovery process is not completed. and control means for transmitting a signal for notifying, based on said signal, row a notification for the electric vehicle in a state in which the recovery process has not been completed is not left to the driver Characterized in that it comprises a notifying means for prompting the driver of the electric vehicle (first invention).

  According to the present invention, when it is determined by the determination means that it is necessary to perform a recovery process of the storage capacity of the storage battery, the recovery process means executes the recovery process. If the vehicle-mounted device is turned off before the recovery process ends, it is determined that the vehicle is not in use. Therefore, when the vehicle-mounted device is turned off, the notification means notifies that the storage capacity recovery processing of the storage battery has not been completed. This alerts the user of the vehicle and can prevent the storage battery power storage capacity recovery process from being left unfinished.

  In the present invention, it is preferable that the control means transmits a signal for notifying that the recovery process is being performed when the recovery process is being performed (second invention).

  According to this, it is possible to prevent the vehicle-mounted device from being turned off during the execution of the recovery process by notifying that the recovery process is being performed.

  In the present invention, when the vehicle-mounted device is turned off, the storage device stores first storage means for storing whether or not the recovery process is being performed, and the control unit turns on the vehicle-mounted device. When the first storage means stores that the recovery process is being performed, it is preferable to transmit a signal for informing that the recovery process has not ended (first 3 invention).

  According to this, it is possible to prompt the driving of the electric vehicle to such an extent that the recovery process can be completed by notifying when the recovery process has not been completed when the in-vehicle device is turned off. It is possible to prevent the power source of the in-vehicle device from being turned off before the process is finished.

  In the present invention, there is provided time estimation means for estimating a time required until the recovery process is completed, and the control means is configured to estimate the time estimated by the time estimation means when the recovery process is being performed. It is preferable to transmit a signal for notification in accordance with (4th invention).

  According to this, by notifying according to the time until the recovery process is completed, it is possible to prevent the vehicle-mounted device from being turned off before the recovery process is completed.

  In the present invention, it comprises time estimation means for estimating the time required until the recovery process is completed, and the control means is configured such that when the vehicle-mounted device is turned on, the first storage means is When it is stored that recovery processing is being performed, it is preferable to transmit a signal for notification according to the time estimated by the time estimation means (fifth invention).

  According to this, if the recovery process has not been completed when the in-vehicle device is turned off, a notification is made according to the remaining time of the recovery process. Can be prevented from being turned off.

  In the present invention, power-off time detection means for detecting a power-off time during which the vehicle-mounted device is turned off is provided, and the control means is configured to detect the electric vehicle when the power-off time exceeds a predetermined time. It is preferable to transmit a signal for informing that the device is left unused without being used (the sixth invention).

  According to this, by notifying when the power-off time exceeds a predetermined time, it is possible to urge the electric vehicle to operate, and it is possible to prevent the electric vehicle from being left unused for a long time. .

In the present invention, when the vehicle-mounted device is turned on, the control means has a long power off time exceeding the predetermined time when the power off time exceeds a predetermined time. Thus, it is preferable to transmit a signal for informing the driver of progressively stronger alerts so as not to leave the electric vehicle again (seventh invention).

  According to this, when the vehicle-mounted device is turned on, when the power-off time exceeds a predetermined time, it can be notified according to the length exceeding the predetermined time, so that the electric vehicle is used. Without being left again for a long time.

  In the present invention, the notification means includes display means, and the control means transmits a signal for blinking at least a part of the display contents of the display means when the power-off time exceeds a predetermined time. It is preferable to do this (8th invention).

  According to this, since the notification can be emphasized by blinking the display content, it is possible to prevent the electric vehicle from being left again for a long time without being used.

  In the present invention, the notification means includes sound generation means, and the control means transmits a signal for notification by the display means and the sound generation means when the power-off time exceeds a predetermined time. It is preferable (9th invention).

  According to this, since the notification can be emphasized by the display and sound, it is possible to prevent the electric vehicle from being left again for a long time without being used.

  In the present invention, the notification means includes display means and sound generation means, and the control means blinks at least a part of the display content of the display means when the power-off time exceeds a first predetermined time. When the power-off time exceeds a second predetermined time, a signal for notification by the display means and the sound generating means is transmitted, and the second predetermined time is the second predetermined time. It is preferable that the time is longer than a predetermined time of 1 (10th invention).

  According to this, depending on the length of the power-off time exceeding the predetermined time, the flashing notification, the display and sound notification, and the emphasis method can be changed. Therefore, it is possible to prevent the electric vehicle from being left again for a long time without being used.

  In the present invention, there is provided second storage means for storing the number of times that the power-off time exceeds a predetermined time, and the control means is configured to store the second storage means when the vehicle-mounted device is turned on. When the number of times stored by (1) exceeds a predetermined number of times, it is preferable to transmit a signal for notifying the contents corresponding to the stored number of times exceeding the predetermined number of times (11th invention).

  According to this, the number of times that the power-off time exceeds the predetermined time is stored, and when the number of times exceeds the predetermined number, the electric vehicle is left unused again for a long time without being used. Can be suppressed.

  In the present invention, the notification means includes display means, and the control means displays at least a part of the display content of the display means when the number of times stored by the second storage means exceeds a predetermined number. It is preferable to transmit a signal for blinking (the twelfth invention).

  According to this, since the notification can be emphasized by blinking the display content, it is possible to prevent the electric vehicle from being left again for a long time without being used.

  In the present invention, the notification means includes sound generation means, and the control means notifies the display means and the sound generation means when the number of times stored by the second storage means exceeds a predetermined number. It is preferable to transmit a signal for this purpose (the thirteenth invention).

  According to this, since the notification can be emphasized by the display and sound, it is possible to prevent the electric vehicle from being left again for a long time without being used.

  In the present invention, when the vehicle-mounted device is turned off, the first storage means for storing whether or not the recovery process is being performed, and the time when the vehicle-mounted device is turned off are detected. A power-off-time detecting unit; and a second storage unit that stores the number of times the power-off time exceeds a predetermined time. The control unit is configured to switch the first unit when the vehicle-mounted device is turned on. When one storage means stores that the recovery process is being performed, a signal for notifying that the recovery process has not been completed, and when the power-off time exceeds a predetermined time In addition, when the in-vehicle device is turned on, a signal for notifying the contents according to the length of the power-off time exceeding the predetermined time, and when the in-vehicle device is turned on , By the second storage means A signal for notifying the contents corresponding to the stored number of times exceeding the predetermined number of times so that the electric vehicle is not used and is not left again when the remembered number of times exceeds a predetermined number of times; Preferably, the notifying unit includes a display device as the in-vehicle device, and a predetermined display unit of the display device performs display based on the signal transmitted from the control unit (14th invention).

  According to this, after the vehicle-mounted device is turned off during the recovery process, when the vehicle-mounted device is turned on, the recovery process is not completed and the power is turned off. By notifying when the time exceeds a predetermined time or when the number of times that the power-off time exceeds the predetermined time exceeds the predetermined number, it is possible to prevent the electric vehicle from being left unused again. Furthermore, in order to perform a display based on a signal transmitted from the control means in a predetermined display unit of a display device (for example, a display arranged in an instrument panel) as an in-vehicle device, an area for display is increased. And necessary information can be displayed.

The present invention is a storage battery recovery state notification method using an electric motor driven by a storage battery as a power source or a part of the drive source, and whether or not it is necessary to perform a recovery process for a decrease in the storage capacity of the storage battery. A determination step of performing a recovery process for reducing the storage capacity of the storage battery by executing a predetermined number of high-power continuous discharges for supplying a current larger than a predetermined current value from the storage battery to the motor while the electric vehicle is traveling The recovery process is completed when the recovery process is not completed when the electric vehicle is stopped after traveling and the in-vehicle device mounted on the electric vehicle is powered off. A control step for transmitting a signal for notifying that the vehicle has not been operated, and a driver for notifying the electric vehicle not to be left in a state where the recovery process has not been completed based on the signal. Characterized in that it comprises a notifying step of prompting the operation of rows that have the electric vehicle for (fifteenth aspect).

  According to the present invention, when it is determined by the determination step that it is necessary to perform a recovery process for the storage capacity of the storage battery, the recovery process step executes the recovery process. If the vehicle-mounted device is turned off before the recovery process ends, it is determined that the vehicle is not in use. Therefore, when the vehicle-mounted device is turned off, the notification step notifies that the storage capacity recovery processing of the storage battery has not been completed. This alerts the user of the vehicle and can prevent the storage battery power storage capacity recovery process from being left unfinished.

The figure which shows schematic structure of the electric vehicle which concerns on 1st Embodiment of this invention. The flowchart which shows the procedure of a process when the vehicle-mounted apparatus which CPU3 of main ECU2 of FIG. 1 performs turns off. The figure which shows an example of the content alert | reported by step ST6 of FIG. The flowchart which shows the procedure of the process of the continuation of the process of FIG. The figure which shows an example of the content alert | reported by alerting | reporting means. The figure which shows an example of the content alert | reported by each step ST409, 109, 110, 113, 114, 118 of FIG. 4 and each step 409, 410, 414, 418 of FIG. (A) The figure which shows an example of the display 30, (b) The figure which shows an example when displaying a some content. The figure which shows an example of a blink display. The figure which shows an example of the alerting | reporting by a display and an audio | voice. The flowchart which shows the procedure of the storage battery state detection process of step ST115,415. The flowchart which shows the procedure of the recovery process of step ST117,417. The flowchart which shows the procedure of the process following the process of FIG. 2 by 2nd Embodiment. The flowchart which shows the procedure of the process following the process of FIG. 2 by 3rd Embodiment.

  FIG. 1 is a diagram showing a configuration of an electric vehicle according to the first embodiment of the present invention. The present embodiment is a hybrid vehicle (hereinafter referred to as “vehicle”) using an engine (internal combustion engine) and a motor (electric motor) as drive sources.

  In FIG. 1, a vehicle start / stop switch 1 is a switch for starting and stopping the vehicle, and the user of the vehicle operates the start / stop switch 1.

  The start / stop switch 1 is connected to the main ECU 2. When the start / stop switch 1 is started, the main ECU 2 starts its operation, and when it is stopped, the main ECU 2 stops its operation.

  Starting the start / stop switch 1 corresponds to powering on the in-vehicle device in the present invention, and stopping corresponds to powering off the in-vehicle device in the present invention. Normally, the start / stop switch 1 is started when the user of the vehicle gets on the vehicle and starts to run, and the start / stop switch 1 stops before the user of the vehicle stops driving and gets off the vehicle. Is done.

  Even when the vehicle-mounted device is powered off, a weak current flows through the backup power supply (dark current), and communication using a vehicle control program or a communication module described later is operable.

  The main ECU 2 includes a CPU 3 that executes various arithmetic processes, and various storage programs (memory) 4 including a ROM and a RAM that store various arithmetic programs executed by the CPU 3, various tables described later, calculation results, and the like. A signal is input and a drive signal is output to the outside based on a calculation result or the like.

  The main ECU 2 controls a plurality of ECUs (electronic control units) that control the vehicle. Therefore, the main ECU 2 is connected to the ECU 10, ECU 11, and ECU 12. Further, the main ECU 2 is connected to the display 30, the speaker 31, and the communication module 32. The main ECU 2 starts the connected device when started by the start / stop switch 1 and stops the connected device when stopped.

  In the present embodiment, the CPU 3 of the main ECU 2 executes determination means 3a, recovery processing means 3b, control means 3c, time estimation means 3d, and power-off time detection means 3e. The memory 4 of the main ECU 2 constitutes a first storage unit 4a and a second storage unit 4b.

  The ECU 10 controls the output torque of the engine 13 connected to the ECU 10 based on the input signal. For example, the output torque of the engine 13 is adjusted by adjusting the opening of a throttle valve (not shown) according to the amount of operation of an accelerator pedal (not shown). Further, the opening degree of the throttle valve is supplied as a signal from the ECU 10 to the main ECU 2.

  The ECU 11 controls charging / discharging of the connected storage battery 14. The timing of charging / discharging is determined by processing executed by the CPU 3 of the main ECU 2, and the ECU 11 controls charging / discharging of the storage battery 14 in accordance with a signal from the CPU 3 of the main ECU 2. Moreover, the temperature, voltage value, and current value of the storage battery 14 and each storage cell described later are supplied as signals from the ECU 11 to the main ECU 2.

  The ECU 12 controls the driving of the motor 16 and the power generation by controlling the operation of the connected PDU 15.

  The storage battery 14 is connected to a PDU (power drive unit) 15 and stores electric power for driving a motor 16 (for example, a three-phase DC brushless motor). In the present embodiment, the storage battery 14 is configured by connecting a plurality of power storage cells in series.

  The PDU 15 includes, for example, a PWM inverter based on pulse width modulation (PWM) including a bridge circuit configured by bridge connection using a plurality of transistor switching elements.

  Further, for example, when the motor 16 is driven, the PDU 15 converts DC power output from the storage battery 14 into three-phase AC power and supplies it to the motor 16 based on a torque command output from the ECU 12. On the other hand, when the motor 16 generates power, the three-phase AC power output from the motor 16 is converted into DC power to charge the storage battery 14.

  When driving force is transmitted from the driving device to the motor 16 side when the vehicle is decelerated, the motor 16 functions as a generator, generates a so-called regenerative braking force, and recovers kinetic energy of the vehicle body as electric energy. Furthermore, the motor 16 is driven as a generator by the output of the engine 13 according to the driving state of the vehicle, and generates power generation energy.

  Torque obtained by combining the output torques of the engine 13 and the motor 16 is transmitted to the drive device 17.

  The display 30 is, for example, an instrument panel that is arranged in front of the driver's seat of the vehicle so that the driver can see it, and performs display based on a signal from the main ECU 2.

  The speaker 31 is attached to, for example, a door of a driver's seat or a passenger seat, and generates a sound based on a signal from the main ECU 2.

  The communication module 32 communicates with an external center (not shown) based on a signal from the main ECU 2.

  The display 30, the speaker 31, and the communication module 32 correspond to notification means in the present invention.

  Next, the process performed by CPU3 of main ECU2 of this embodiment is demonstrated.

  In the present embodiment, the CPU 3 operates as the determination unit 3a, the recovery processing unit 3b, the control unit 3c, the time estimation unit 3d, and the power-off time detection unit 3e in the present invention.

  FIG. 2 is a flowchart showing a procedure of processing of the present invention executed by the CPU 3.

  First, in step ST1, it is determined whether or not the in-vehicle device is powered off. When the power is off, the process proceeds to step ST2, and when the power is on, the determination at step ST1 is performed again. The case where step ST1 is YES corresponds to the case where the vehicle-mounted device in the present invention is turned off.

  In step ST2, it is determined whether recovery processing has been executed. It is determined that the recovery process execution mode (described later) set in steps ST208 and 213 (described later) has been executed when it is on, and is not executed when it is off. When the determination result in step ST2 is on, the process proceeds to step ST3.

  In step ST3, the execution state of the storage capacity recovery process of the storage battery 14 is detected.

  Next, the process proceeds to step ST4, and it is determined whether or not the execution of the recovery process is completed after the recovery process is executed based on the detection result of the execution state of the recovery process detected in step ST3. That is, the case where step ST4 is NO corresponds to the case where the recovery process in the present invention is not completed.

  When step ST4 is NO, the process proceeds to step ST5, the flag F is set to 0, the process proceeds to step ST6, and the driver is notified. For example, as shown in FIG. 3, the notification outputs to the display 30 a display that “the battery deterioration recovery operation has not been completed”. At this time, it is desirable to notify the time required until the recovery process is completed. This time is estimated by the time estimation means 3d in the present invention. Details of the time estimation means 3d will be described later.

  When the determination result of step ST4 is YES or when the determination result of step ST2 is NO, the process proceeds to step ST7, and the flag F is set to 1.

  When the processes of steps ST6 and ST7 are completed, the process proceeds to step ST101 of FIG.

  In step ST101, an operation of a timer (hereinafter referred to as “power-off time timer”) for measuring a time during which the in-vehicle device is in a power-off state (hereinafter referred to as “power-off time”) is started. This step ST101 is executed when the determination in step ST1 is YES as described above. That is, when the vehicle-mounted device is turned off, the operation of the power-off time timer is started.

  Next, the process proceeds to step ST102, where it is determined whether the vehicle-mounted device is powered on. When the power is off, the determination at step ST102 is performed again. When the power is on, the process proceeds to step ST103. In the present invention, when the vehicle-mounted device is turned on, it corresponds to a case where step ST102 is YES.

  In step ST103, the operation of the power-off time timer started in step ST101 is stopped. That is, the operation of the power-off time timer is stopped when the vehicle-mounted device is turned on.

  When the process of step ST103 ends, the process proceeds to step ST104, and the time during which the vehicle is stopped is calculated from the value of the power-off time timer. For example, when the addition cycle of the value of the power-off time timer increases by 1 per second, the value of the power-off time timer is treated as seconds and the power-off time is calculated. The addition period of the power-off time timer may be set in any way as long as it can be determined without degrading accuracy in the determinations of steps ST106, 107, 111, and 112 described later.

  In this embodiment, the power-off time is determined by using the power-off time timer. However, the date and time when the in-vehicle device is turned off are written in the memory 4, and the in-vehicle device is turned on. The power-off time may be determined by calculating from the date and time when the date and time are written and the date and time written in the memory 4. In this case, for example, date and time information is acquired from information received by a clock or a GPS (Global Positioning System) antenna mounted on the vehicle.

  In this case, the date and time information is written in the memory 4 in step ST101, the current date and time information is acquired in step ST103, and the information written in step ST101 and the information acquired in step ST103 are acquired in step ST104. The power off time is calculated.

  The process of step ST104 corresponds to the power-off time detecting means 3e in the present invention.

  When the process of step ST104 is completed, the process proceeds to step ST105, where it is determined whether or not the flag F is 0. If it is 0, the process proceeds to step ST106. In the processes of steps ST4, 5, and 7, F is set to 0 when the recovery process is not completed, and F is set to 1 when it is completed. That is, the process proceeds to step ST106 when the recovery process is not completed when the vehicle-mounted device is turned off.

  The flag F is stored in the first storage unit 4 a of the memory 4.

  In step ST106, it is determined whether or not the power-off time calculated in step ST104 is one month or longer. If it is one month or longer, the process proceeds to step ST107.

  In step ST107, it is determined whether or not the power-off time calculated in step ST104 is 3 months or more. If it is 3 months or more, the process proceeds to step ST108.

  In step ST108, the contents of the display A and the display C shown in FIG.

  Here, the display contents of the displays A to E shown in FIG. 5 will be described. The display A is a display for notifying that the recovery process is not completed and the recovery process is performed again. For example, the contents as shown in FIG. At this time, it is desirable to display the time estimated by the time estimating means 3d described later, similarly to the case where it is displayed in the above-mentioned step ST6.

  In the case of the display B, since the power-off time is one month or more and less than three months and the storage capacity of the storage battery 14 may have been reduced, be careful not to leave the vehicle-mounted device off again. It is a display for performing. For example, the contents as shown in FIG. Here, neglect means that the vehicle-mounted device has been in a power-off state for a long period (for example, one month).

  The display C is a display for taking care not to leave the vehicle again because there is a possibility that the decrease in the storage capacity of the storage battery 14 has progressed considerably after the power-off time is 3 months or longer. For example, the contents as shown in FIG.

  The display D is a display for notifying that the recovery process is being executed. For example, the contents as shown in FIG. At this time, it is desirable to display the time until the recovery process is completed, which is estimated by the time estimation unit 3d described later.

  The display E is a display for giving a warning not to leave again because the number of times the power-off time has exceeded 3 months has exceeded 5 times and has been frequently left for a long time. For example, the contents as shown in FIG.

  In the flowchart shown in FIG. 4, the displays A to D are used, and the display E is used in another flowchart described later.

  Moreover, it is good to prepare many types so that not only display AE can be alert | reported effectively.

  An example in which the contents of FIGS. 6A to 6E are displayed on a vehicle is shown in FIG. FIG. 7A is an example of an instrument panel disposed in front of the driver's seat of the vehicle so as to be visible to the driver. Here, the tachometer for displaying the engine speed, A speedometer that displays the travel speed, a trip meter that displays the travel distance of the vehicle, and a display 30 that displays the images shown in FIGS.

  FIG. 7B is an enlarged view of the display 30 of FIG. 7A, and illustrates a display method when displaying two types of contents (display A and display C) as in step ST108. is there. For example, in FIG. 7B, when displaying the contents of the display C and then switching to the display of the contents of the display A, when displaying two types of contents, after displaying the contents of one, the other Switch to one content display. The timing for switching the display only needs to be set so that the two warning contents can be sufficiently confirmed, and all warning contents may be switched after being displayed for a few seconds, or the display time may be changed depending on each warning content. Good.

  Even if it is desired to display a plurality of contents as shown in FIG. 7 (b), the contents to be notified can be obtained only by preparing one display by switching each display contents to another display contents after a predetermined time display. It is possible to notify without omission. Therefore, the place occupied by the display device can be reduced.

  Further, as a method for displaying a plurality of contents, a method of preparing display contents for each combination of display contents and displaying the contents can be considered. For example, in the example of step ST108, new display contents including the contents of displays A and C may be prepared and displayed.

  Further, in FIG. 7A, although displayed on the instrument panel, it may be displayed on a display of a car navigation system or an audio system mounted on the vehicle.

  The above is an example of contents to be displayed and a display method.

  Returning to the description of FIG. If the decision result in the step ST107 is NO, the process proceeds to a step ST109 to display the contents of the display A and the display B in FIG.

  If the decision result in the step ST106 is NO, the process proceeds to a step ST110 to display the content of the display A in FIG.

  If the determination result in step ST105 is NO, the process proceeds to step ST111, and it is determined whether the power-off time is one month or longer. If it is one month or longer, the process proceeds to step ST112.

  In step ST112, it is determined whether or not the power-off time is 3 months or more. If it is 3 months or more, the process proceeds to step ST113, and the contents of display C in FIG. 5 are displayed.

  If the decision result in the step ST112 is NO, the process proceeds to a step ST114 to display the contents of the display B in FIG.

  When the processes of steps ST108, 109, 110, 113, and 114 are completed, or when the determination result of step ST111 is NO, the process proceeds to step ST115.

  To summarize the above processing, whether or not to display the display A is switched according to the processing for determining whether or not the flag is 0 in step ST105, and whether or not the power off time is less than one month in steps ST106 and 111. In steps ST107 and 112, it is determined whether the power-off time is 1 month or more and less than 3 months or 3 months or more, and the display contents are switched.

  For example, when the power-off time exceeds 3 months, a part of the displayed content may be blinked as shown in FIG. By carrying out like this, attention can be drawn more and notification can be performed effectively.

  Furthermore, for example, when the power-off time exceeds 6 months, it is displayed on the display 30 as shown in FIG. 9, and the speaker 31 utters “the vehicle notification period has exceeded 6 months”. May be. By carrying out like this, attention can be drawn more and notification can be performed effectively.

  In this way, the notification can be performed more effectively by performing the notification that can draw more attention as the importance of the notification becomes higher (the leaving period becomes longer).

  In the present embodiment, the comparison target of the power off time is one month, three months, and six months, but an appropriate value may be set depending on the performance of the storage battery 14 with respect to the power off time.

  In step ST115, the state of the storage battery 14 is detected, and processing such as whether or not recovery processing is necessary is performed. Details of the processing in step ST115 will be described later with reference to FIG. Step ST115 corresponds to the determination means 3a or determination step of the present invention.

  Next, proceeding to step ST116, it is determined whether or not the recovery process should be executed. When the recovery process execution mode set in steps ST208 and 213, which will be described later, is on, it is determined to be executed, and when it is off, it is determined not to be executed. If the determination result in step ST116 is not to be executed, the process is terminated, and if it is to be executed, the process proceeds to step ST117.

  Next, it progresses to step ST117 and the recovery process of the fall of the electrical storage capacity of the storage battery 14 is performed. Details of the process of step ST117 will be described later with reference to FIG. Step ST117 corresponds to the recovery processing means 3b or the recovery processing step of the present invention.

  Next, the process proceeds to step ST118, and the content of the display D in FIG.

  When the process of step ST118 ends, the process proceeds to step ST119, where it is determined whether or not the process for recovering the storage capacity of the storage battery 14 has been completed. If the process has been completed, the process proceeds to step ST120 and the contents displayed in step ST118. Is deleted, and the process ends.

  If the determination result in step ST119 is NO, the process proceeds to step ST121 to determine whether or not the on-vehicle device is powered off. If the power is off, the process returns to step ST2 in FIG. 2 to perform the above-described processing. If the decision result in the step ST121 is NO, the process returns to the step ST119, and it is judged again whether or not the recovery process is completed.

  That is, while the vehicle-mounted device is powered on, the processes of steps ST119 and 121 are performed until the recovery process is completed, and the display 30 disappears when the recovery process is completed. If the vehicle-mounted device is turned off before the recovery process is completed, the determination result in step ST121 is YES, and the determination result in step ST4 in FIG. 2 is NO. Is done.

  Next, with reference to FIG. 10, the storage battery state detection process in step ST115 of FIG. 4 will be described.

  In step ST201, SOC (State of charge) is controlled to a specified value.

  Next, the process proceeds to step ST202, where it is determined whether or not the temperature of the storage battery 14 is within a specified value. If the temperature exceeds the specified value, the process proceeds to step ST203. In step ST203, the storage battery 14 is cooled, control is performed so that the temperature of the storage battery 14 falls within a specified value, and the process returns to step ST201.

  If the determination result in step ST202 is YES, the process proceeds to step ST204 to determine whether or not the SOC is within a specified value. When the determination result of step ST204 is NO, the process returns to step ST201, and when YES, the process proceeds to step ST205.

  Summarizing the processes of steps ST201 to ST204 described above, charging is performed until the temperature of the storage battery 14 is a specified value and the SOC reaches a specified value. Hereinafter, the processing of steps ST201 to ST204 is referred to as SOC conditioning processing.

  In step ST205, it is determined whether or not the vehicle is in an acceleration state. When not in the acceleration state, the process returns to step ST201, and when in the acceleration state, the process proceeds to step ST206. The acceleration state indicates a state where a predetermined torque output is required. Whether or not the vehicle is in an acceleration state is determined based on the opening of the throttle valve that changes according to the amount of operation of the accelerator pedal.

  In step ST206, the high output continuous discharge of the storage battery 14 is performed. At the time of high output continuous discharge, control is performed so that the discharge current is maintained at a specified current value (10 C) or more. Here, 1C represents a current value for exhausting all the batteries fully charged in 3 hours, and 10C represents a current value 10 times as large as 1C. The high output continuous discharge is executed for a predetermined time, and normally, the high output discharge is continued in the steps after step ST207.

  In the present embodiment, in the high output discharge, the driving ratio of the motor 16 is increased by reducing the load of the engine 13 so that the motor 16 becomes a load of the high output discharge. However, it is only necessary that the storage battery 14 can be discharged with a specified current value. For example, when an air conditioner mounted on a vehicle operates with a specified current value, it may be a power source for the air conditioner.

  Then, it progresses to step ST207 and it is determined whether each parameter is in a limit value. Each parameter is the voltage value of each storage cell of the storage battery 14, the variation of the voltage value of each storage cell of the storage battery 14, the SOC, and the temperature of each storage cell. These limit values are set to values (border points at which the battery is damaged) that can prevent the battery from being damaged.

  If even one of the parameters in step ST207 exceeds the limit value, the process proceeds to step ST208, the recovery process execution mode is turned off, and the process ends.

  If the decision result in the step ST207 is YES, the process advances to a step ST209 to decide whether or not each parameter is within a specified execution value. Each parameter is the voltage value of each storage cell of the storage battery 14, the variation of the voltage value of each storage cell of the storage battery 14, the SOC, and the temperature of each storage cell, as in step ST207. These execution regulation values are more relaxed than the limit values.

  If even one of the parameters in step ST209 exceeds the specified execution value, the process proceeds to step ST210, the setting of the discharge current is changed, and the process returns to step ST205. The discharge current is set to be slightly smaller than the value set in step ST206.

  If the decision result in the step ST209 is YES, the process advances to a step ST211 to determine whether or not an elapsed time from when the high output continuous discharge is performed has passed a specified time. When the specified time has not elapsed, the process returns to step ST205, and when the specified time has elapsed, the process proceeds to step ST212.

  In step ST212, it is determined whether or not the high output discharge result is within an allowable range. If the result is within the allowable range, the process proceeds to step ST208. If it is outside the allowable range, the process proceeds to step ST213, the recovery process execution mode is turned on, and the process ends.

  The determination as to whether the high output discharge result is within the allowable range is performed as follows. A predetermined reference is provided for the relationship between the battery average current described later and the inter-battery voltage drop described later, and a predetermined range including this reference is set as an allowable range. Judgment is made based on whether or not the allowable range is satisfied.

  If the measured value is within the allowable range, the storage battery 14 is determined not to need the storage capacity recovery process, and if it is outside the allowable range, it is determined that the storage capacity recovery process of the storage battery 14 is necessary. The reference and allowable range are values that can be changed based on the temperature of the storage battery 14.

  Here, the battery average current means an average value of the current supplied by the storage battery 14 when high output discharge equal to or higher than a reference value is continuously performed. In addition, the inter-battery voltage drop is a voltage difference generated between a plurality of storage cells, and when a high output discharge equal to or higher than a reference value is continuously performed, between the plurality of storage cells obtained at a reference time point. Is the voltage difference.

  The above is the details of the storage battery state detection process.

  Next, with reference to FIG. 11, the recovery process of the storage capacity of the storage battery 14 in step ST117 of FIG. 4 will be described.

  First, in step ST302, SOC conditioning processing (steps ST201 to ST204) is performed.

  Next, it progresses to step ST303 and it is determined whether a vehicle is in an acceleration state. When not in an acceleration state, the process returns to step ST302, and when in an acceleration state, the process proceeds to step ST304.

  In step ST304, high output continuous discharge is performed. Here, the discharge current is set larger than the high-power continuous discharge (step ST206) performed in the storage battery state detection process.

  In step ST305, it is determined whether each parameter is within the limit value. Each parameter is the voltage value of each storage cell of the storage battery 14, the variation of the voltage value of each storage cell of the storage battery 14, the SOC, and the temperature of each storage cell. Similar to step ST207, these limit values are set to values (border points at which the battery is damaged) that can prevent the battery from being damaged.

  If the decision result in the step ST305 is NO, the process is ended, and if it is YES, the process proceeds to a step ST306.

  In step ST306, it is determined whether or not a predetermined time has elapsed since the high power continuous discharge was performed. When the specified time has not elapsed, the process returns to step ST302, and when the specified time has elapsed, the process proceeds to step ST307.

  In step ST307, it is determined whether or not high-power continuous discharge has been performed a specified number of times. If the determination result is YES, the process ends, and if the determination result is NO, the process proceeds to step ST308.

  In step ST308, it is determined whether or not the high-output discharge result is within an allowable range. If it is within the allowable range, the process is terminated. If not within the allowable range, the process returns to step ST302. This determination is similar to step ST212.

  Summarizing Steps ST305 to 308, the process is terminated when each parameter exceeds a limit value, when a high-power continuous discharge result is within an allowable range, or when high-power continuous discharge is executed a specified number of times. Become.

  That is, even when the high-power continuous discharge result is outside the allowable range, the recovery process of the storage battery 14 is terminated so that the storage battery 14 is not damaged when the high-power continuous discharge is executed a specified number of times.

  In addition, since it is determined whether or not the specified time has elapsed in steps ST306 and 307 and whether or not the high-power continuous discharge has been executed a specified number of times, the upper limit of the time required for the recovery process is determined. Therefore, the time required for the recovery process can be estimated by multiplying the specified time by the specified number of times.

  That is, the remaining time required for the recovery process can be estimated by subtracting the time elapsed since the start of the high-power continuous discharge from the result obtained by multiplying the specified time by the specified number of times. This estimation corresponds to the time estimation means 3d of the present invention.

  Therefore, in the above-described notification (for example, the display of FIG. 3 in step ST6), the time estimated by the time estimation means 3d can be notified (displayed).

  The storage battery state detection process and the storage capacity recovery process of the storage battery 14 described with reference to FIGS. 10 and 11 are described in detail in Japanese Patent Application Laid-Open No. 2009-280041 related to the application of the present applicant.

  As described above, in the present embodiment, when the in-vehicle device is turned off (step ST1) and the recovery process has not ended (the determination result of step ST4 is NO), the recovery operation is completed for the driver. Notifying that it has not been performed (step ST6). Further, the time when the in-vehicle device is powered off (power-off time) is detected (steps ST101, 103, 104), and notification is made depending on whether or not the recovery operation has been completed when the in-vehicle device was last powered off. The contents are changed (step ST105). Furthermore, depending on whether the power-off time is less than 1 month, 1 month or more, less than 3 months, or 3 months or more, the display method is changed, the display blinks, the display and sound are used, etc. (Steps ST106, 107, 111, 112). Further, when the recovery process is being executed, it is informed that the recovery process is being executed (step ST118).

  For this reason, when the storage capacity recovery process of the storage battery 14 is not completed, the storage capacity recovery process of the storage battery 14 is not completed by notifying the user when the vehicle-mounted device is turned off. In this state, it can be prevented from being left for a long time.

  Furthermore, it is possible to prevent the in-vehicle device from being turned off during the recovery process.

  Next, processing executed by the CPU 3 of the main ECU 2 according to the second embodiment will be described with reference to FIG.

  In this embodiment, the process starts from the process of FIG. 2 as in the above-described embodiment, and when step ST6 or step ST7 ends, the process proceeds to step ST401 of FIG. 12 and the processes of steps ST401 to 405 are executed. The processing in steps ST401 to 405 is the same as that in steps ST101 to 105 in FIG.

  If the decision result in the step ST405 is YES, the process advances to a step ST406 to judge whether or not the power off time is 3 months or more. When the determination result is YES, the process proceeds to step ST407, and the counter value is incremented by one.

  This counter is stored in the second storage means 4 b of the memory 4.

  When the process of step ST407 ends or when the determination result of step ST406 is NO, the process proceeds to step ST408, and it is determined whether or not the value of the counter is greater than 5.

  If the decision result in the step ST408 is YES, the process proceeds to a step ST409 to display the contents of the display A and the display E in FIG. 4, and if NO, the process proceeds to a step ST410 to display the contents of the display A in FIG. .

  At this time, a part of the displayed content may be blinked. By carrying out like this, attention can be drawn more and notification can be performed effectively.

  Further, the contents displayed on the display 30 and the voice displayed from the speaker 31 may be read out. By carrying out like this, attention can be drawn more and notification can be performed effectively.

  If the decision result in the step ST405 is NO, the process advances to a step ST411 to determine whether or not the power off time is 3 months or more. If the determination result is yes, the process proceeds to step ST412 to increment the counter value by one. In the present embodiment, three months are set as the comparison of the power-off time in steps ST406 and 411. However, an appropriate value may be set depending on the performance of the storage battery 14 with respect to the power-off time.

  When the process of step ST412 ends or when the determination result of step ST411 is NO, the process proceeds to step ST413 to determine whether or not the value of the counter is greater than 5. In the present embodiment, the counter value comparison is 5 in steps ST408 and 413, but an appropriate value may be set depending on the performance of the storage battery 14 with respect to the power-off time.

  If the decision result in the step ST413 is YES, the process proceeds to a step ST414 to display the contents of the display E in FIG.

  When the processes of steps ST409, 410, and 414 are completed, or when the determination result of step ST413 is NO, the process proceeds to step ST415.

  The processing in steps ST415 to 421 is the same as that in steps ST115 to 121 in FIG.

  In this embodiment, in steps ST406 to 407 and 411 to 412, the value of the counter is increased by 1 when the power-off time is 3 months or more. When the value of this counter exceeds 5, a warning of display E is given. Therefore, by notifying the user when it is estimated that the storage capacity of the storage battery 14 is drastically reduced, it is possible to prevent the storage battery 14 from being left for a long time in a state where the recovery process of the storage capacity of the storage battery 14 is not completed. .

  Finally, processing executed by the CPU 3 of the main ECU 2 according to the third embodiment will be described with reference to FIG.

  In the third embodiment, as in the first embodiment, the process starts from FIG. 2, and when step ST6 or step ST7 ends, the process proceeds to step ST501 in FIG. Step ST501 is the same as ST101 in FIG.

  Next, it progresses to step ST502 and it is determined whether the power-off time is 3 months or more. If the power-off time is less than 3 months, the determination in step ST502 is performed again. When the power-off time is 3 months or longer, the process proceeds to step ST503.

  Step ST503 transmits a signal to an external center via the communication module 32. Here, the external center refers to a server that collects vehicle user information. Further, the signal to be transmitted may be information that the power-off time has passed for three months or more, or the power-off time in seconds or days.

  It is conceivable that the communication module 32 uses a mobile phone line mounted on a car navigation system or the like.

  Next, the process proceeds to step ST504, and based on the signal received in step ST503, the external center notifies the user of the vehicle that the power-off time has passed for three months or more. Information of the notification destination is registered in advance in an external center, and an e-mail address, a telephone number, or the like can be considered. In addition, when the power-off time is 3 months or more and less than 6 months, only contact by e-mail may be made, and when it exceeds 6 months, contact may be made from both e-mail and telephone.

  Moreover, in this embodiment, although it is set as three months as a comparison of power-off time by step ST502, what is necessary is just to set an appropriate value by the performance of the storage battery 14 with respect to power-off time, etc.

  As described above, when the power-off time exceeds a certain value, the external center is notified by notifying the external center via the communication module 32. Therefore, even when the user of the vehicle is not near the vehicle, the power-off time is It can be known that the battery is long, and it is possible to prevent the storage battery 14 from being left for a long time in a state where the storage capacity recovery process of the storage battery 14 is not completed.

  2 ... Main ECU, 3 ... CPU, 3a ... Determination means, 3b ... Recovery processing means, 3c ... Control means, 3d ... Time estimation means, 3e ... Power off time detection means, 4 ... Memory, 4a ... First storage means 4b, second storage means, 14 storage battery, 30 display, 31 speaker, 32 communication module.

Claims (15)

An electric vehicle that uses an electric motor that drives a storage battery as a power source as a drive source or a part of the drive source,
Determining means for determining whether or not it is necessary to perform a recovery process for a decrease in the storage capacity of the storage battery;
A recovery processing means for performing a recovery process of a decrease in the storage capacity of the storage battery by executing a high-power continuous discharge for supplying a current larger than a predetermined current value from the storage battery to the electric motor while the electric vehicle is running;
When the electric vehicle is stopped after traveling and the in-vehicle device mounted on the electric vehicle is turned off, if the recovery process is not completed, it is notified that the recovery process is not completed. Control means for transmitting a signal for
Based on the signal, and characterized in that it comprises a notifying means for prompting the operation of the row gastric the electric vehicle to the driver notification for the electric vehicle in a state in which the recovery process has not been completed is not allowed Electric vehicle to do.   2. The electric vehicle according to claim 1, wherein the control means transmits a signal for notifying that the recovery process is being performed when the recovery process is being performed. vehicle.   The electric vehicle according to claim 1 or 2, further comprising: a first storage unit that stores whether or not the recovery process is being performed when the on-vehicle device is turned off. A signal for notifying that the recovery process is not completed when the first storage means stores the recovery process when the vehicle-mounted device is turned on. The electric vehicle characterized by transmitting.   The electric vehicle according to any one of claims 1 to 3, further comprising time estimation means for estimating a time required until the recovery process is completed, wherein the control means performs the recovery process. An electric vehicle characterized by transmitting a signal for notification in accordance with the time estimated by the time estimating means when the vehicle is in operation.   The electric vehicle according to claim 3, further comprising a time estimation unit that estimates a time required until the recovery process is completed, wherein the control unit is configured to perform the first operation when the vehicle-mounted device is turned on. An electric vehicle characterized by transmitting a signal for notification according to the time estimated by the time estimation means when one storage means stores that the recovery process is being performed.   The electric vehicle according to any one of claims 1 to 5, further comprising a power-off time detection unit that detects a power-off time during which the vehicle-mounted device is turned off, and the control unit includes the power-off time. When the electric vehicle exceeds a predetermined time, a signal for informing that the electric vehicle is left unused without being used is transmitted.   7. The electric vehicle according to claim 6, wherein when the vehicle-mounted device is turned on, the control unit turns off the power supply that exceeds the predetermined time when the power-off time exceeds a predetermined time. An electric vehicle characterized by transmitting a signal for informing the driver of progressively stronger alerts so as not to leave the electric vehicle again as the time length increases.   8. The electric vehicle according to claim 7, wherein the notification unit includes a display unit, and the control unit blinks at least a part of the display content of the display unit when the power-off time exceeds a predetermined time. The electric vehicle characterized by transmitting the signal for making it go.   9. The electric vehicle according to claim 8, wherein the notification means includes a sound generation means, and the control means notifies the display means and the sound generation means when the power-off time exceeds a predetermined time. The electric vehicle characterized by transmitting the signal for this.   8. The electric vehicle according to claim 7, wherein the notification unit includes a display unit and a sound generation unit, and the control unit displays contents displayed on the display unit when the power-off time exceeds a first predetermined time. A signal for causing at least a part of the signal to blink, and when the power-off time exceeds a second predetermined time, a signal for notification by the display means and the sound generation means is transmitted, and the second The predetermined time is longer than the first predetermined time.   The electric vehicle according to claim 6 or 7, further comprising: a second storage unit that stores the number of times that the power-off time exceeds a predetermined time, and the control unit is configured to turn on the vehicle-mounted device. In addition, when the number of times stored by the second storage means exceeds a predetermined number of times, a signal having a content corresponding to the stored number of times exceeding the predetermined number of times is transmitted. .   12. The electric vehicle according to claim 11, wherein the notifying unit includes a display unit, and the control unit displays the display unit when the number of times stored by the second storage unit exceeds a predetermined number. An electric vehicle characterized by transmitting a signal for blinking at least a part of contents.   13. The electric vehicle according to claim 12, wherein the notification unit includes a sound generation unit, and the control unit includes the display unit and the display unit when the number of times stored by the second storage unit exceeds a predetermined number. An electric vehicle characterized by transmitting a signal for notification by the sound generating means. In the electric vehicle according to claim 1, 2 or 4, a first storage means for storing whether or not the recovery process is performed when the vehicle-mounted device is powered off;
Power off time detection means for detecting the time when the in-vehicle device was turned off;
Second storage means for storing the number of times the power-off time exceeds a predetermined time;
The control means indicates that the recovery process is not completed when the first storage means stores the recovery process when the vehicle-mounted device is turned on. A signal for notification,
When the power-off time exceeds a predetermined time, and when the vehicle-mounted device is turned on, a signal for notifying the content according to the length of the power-off time exceeding the predetermined time; ,
When the number of times stored by the second storage means exceeds a predetermined number when the vehicle-mounted device is turned on, the predetermined number of times is set so that the electric vehicle is not used and is not left again. A signal for informing the content corresponding to the stored number of times exceeded,
The informing device includes a display device as the in-vehicle device, and performs display based on a signal transmitted from the control unit on a predetermined display unit of the display device. A method for notifying a recovery state of a storage battery using an electric motor that drives the storage battery as a power source as a drive source or a part of the drive source,
A determination step for determining whether or not it is necessary to perform a recovery process for a decrease in the storage capacity of the storage battery;
A recovery process step of performing a recovery process of a decrease in the storage capacity of the storage battery by executing a high-power continuous discharge for supplying a current larger than a predetermined current value from the storage battery to the electric motor while the electric vehicle is running;
When the electric vehicle stops after traveling and the in-vehicle device mounted on the electric vehicle is turned off, if the recovery process is not completed, it is notified that the recovery process is not completed. A control step of transmitting a signal for
And comprising a notification step of, based on the signal, prompting the operation of the row gastric the electric vehicle to the driver notification for the electric vehicle in a state in which the recovery process has not been completed is not allowed A recovery state notification method for a storage battery.

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