JP2019062586A - Vehicular regeneration control apparatus - Google Patents

Abstract

To provide a vehicular regeneration control apparatus enabling a driver to sight whether a regenerative brake can be operated by a motor when one-pedal mode is set.SOLUTION: A regeneration control apparatus includes: a motor (7) for driving and regeneratively braking a drive wheel (3); a battery (11); acceleration-deceleration operation means (21) capable of performing acceleration or deceleration by varying a degree of inputting or outputting power of the battery and motor; mode selection means (45) for selecting a one-pedal mode in which a vehicle is accelerated, decelerated or stopped by driving the motor and performing a regenerative braking only with the acceleration-deceleration operation means; regenerative brake limit instruction means (11a, 24) for issuing a limit instruction to the regenerative braking; and notification means (43, 54, 143) for notifying that the one-pedal mode is selected; and control means (50). In a case where the limit instruction to the regenerative braking is issued when the one-pedal mode is selected, the control means controls the generative braking of the motor so as to limit the regenerative braking and controls the notification means so as to issue notification in a different mode from the case of the regenerative braking being not limited.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a regeneration control device for a vehicle, and more particularly to a regeneration control technique for a vehicle that can be driven in a one-pedal mode and equipped with a motor and a battery.

Currently, a driving motor mounted on a hybrid vehicle is driven by driving wheels to accelerate the vehicle by being supplied with electric power from a battery also mounted on the vehicle, and generates electric power while decelerating the driving wheels. It is widely used to supply power to the battery while decelerating the vehicle (hereinafter referred to as "regenerative braking").
That is, the hybrid vehicle consumes the power stored in the battery to drive the driving battery, and drives the engine when the state of charge (hereinafter referred to as SOC) in the battery decreases, and the power generation motor A so-called series hybrid vehicle or a so-called parallel hybrid vehicle that generates electric power and supplies power to the battery.

However, in the series hybrid vehicle and parallel hybrid vehicle as described above, when the SOC of the battery is 100%, that is, when the battery is fully charged, power generation by the traveling motor can not be performed, so that regenerative braking by the traveling motor can not be performed. There is.
Therefore, when the SOC is 100%, the power generation motor is supplied with power from the battery and driven to drive the engine without supplying fuel to the engine (motoring) to store the power stored in the battery. It is conceivable to consume the power and perform regenerative braking with a traveling motor (Patent Document 1).

  In addition, electric vehicles and hybrid vehicles capable of selecting a so-called one-pedal mode capable of performing an operation from start to stop of the vehicle by adjusting the amount of depression of the accelerator pedal are widely used (Patent Document 2).

JP, 2016-43910, A JP, 2016-150672, A

  The technology disclosed in Patent Document 1 can not be applied to an electric vehicle not equipped with an engine. In other words, in the electric vehicle, since the power of the battery can not be consumed by driving the engine, there is a problem that regenerative braking can not be performed when the battery is fully charged. Further, even in a hybrid vehicle equipped with an engine, if it is not a vehicle equipped with a power generation motor and a traveling motor, respectively, the vehicle is used to drive the engine while using the traveling motor for traveling. Since the motor can not be used for power generation, there is a problem that the technique disclosed in Patent Document 1 can not be implemented.

  Further, in the one-pedal mode in the technology disclosed in Patent Document 2, the deceleration force by the regenerative brake is strong, and the power generated by the regenerative brake is also high. That is, in a vehicle in which the one-pedal mode can be selected, if the regenerative brake is limited by the SOC of the battery, the decelerating force will frequently change, so if the driver does not drive while checking the SOC of the battery, There was room for further improvement.

  The present invention has been made in view of such problems, and an object of the present invention is a vehicle in which the driver can visually recognize whether or not the regenerative brake by the motor can be operated when the one pedal mode is set. To provide a regenerative control device for

  In order to achieve the above object, a regeneration control device of a vehicle according to the present invention drives a drive wheel provided in the vehicle and receives a power from the drive wheel to perform regenerative braking, and the motor Between the battery for performing input and output of electric power, the acceleration / deceleration operation means capable of accelerating / decelerating the vehicle by varying the input / output degree of electric power between the battery and the motor, and the acceleration / deceleration operation means alone Mode selection means for selecting the mode among a plurality of modes including the driving and the regenerative braking and accelerating and decelerating and stopping the vehicle while performing the driving and the regenerative braking; and the regenerative braking limitation issuing the restriction command of the regenerative braking Commanding means, notifying means for notifying that the one pedal mode is selected by the mode selecting means, and the above-mentioned for each mode selected by the mode selecting means Control means for controlling the driving of the motor and the regenerative braking and controlling the notification means according to the operation of the deceleration operation means, the control means controlling the one pedal mode by the mode selection means When selected, when the restriction command of the regenerative braking is issued by the regenerative braking limit command means, the regenerative braking of the motor is controlled to restrict the regenerative braking, and the regenerative braking is not limited It is characterized in that the notification means is controlled to notify in a different mode as compared with time.

  Thereby, when the one-pedal mode is selected by the mode selection means, when the restriction instruction of the regenerative braking is issued by the regenerative braking restriction command means, the regenerative braking of the motor is controlled so as to restrict the regenerative braking. Since the control means controls the notification means to notify in a different mode as compared with the case where the restriction is not restricted, for example, when the regenerative braking restriction command means is made to issue a restriction command of regenerative braking when the battery is fully charged. When the battery is fully charged, such as in the one-pedal mode, where the degree of regeneration is expected to increase, the regenerative brake is limited, in other words, when deceleration by the regenerative brake can not be performed. It is possible to notify the driver that the regenerative brake is limited using the notification means.

That is, the driver is informed in advance that the regenerative brake is not activated, and for example, the driver is notified that the vehicle is to be braked by using a means such as operating a friction brake device or consuming power such as an air conditioner as a braking means. It is possible.
As another aspect, it is preferable to have input / output power display means for displaying an input / output state of power between the battery and the motor, and the notification means makes a notification using the input / output power display means.

  Thus, by using the input / output power display means for displaying the input / output status of power between the battery and the motor, notification by the reporting means for the driver is a notification regarding the power supply status between the battery and the motor. Since it is possible to immediately recognize that there is a notification that the deceleration of the vehicle by the regenerative brake is limited, it is possible to make a good notification.

In another aspect, the regenerative braking limit commanding means is an SOC detecting means for detecting the SOC of the battery, and the control means is such that the SOC of the battery detected by the SOC detecting means is equal to or greater than a predetermined value Preferably, the regenerative braking of the motor is controlled to limit the regenerative braking.
Thereby, when the SOC of the battery is equal to or more than the predetermined value, the SOC detection means, which is the regenerative braking restriction command means, issues a restriction command for regenerative braking so that, for example, the predetermined value is fully charged. When it is a value that approximates at times, it is difficult to supply power to the battery and to perform braking by the regenerative brake, so the regenerative brake is limited and the regenerative brake is limited to the driver using the notification means. It is possible to notify that the

  As another aspect, the input / output power display means is an analog meter or an image imitating an analog meter configured to have a power generation degree display unit for displaying a power generation degree by the motor, and the notification means is In modes other than the one pedal mode, the color, color tone or display pattern of a part or all of the power generation degree display unit is changed and notified, and the control means determines the one pedal by the mode selection means When a mode is selected, if the SOC of the battery detected by the SOC detection means is equal to or greater than a predetermined value, a part or all of the power generation degree display unit compared to when the regenerative braking is not limited It is desirable to control the notification means so as to further change and notify the color, color tone or display pattern of the above according to the SOC.

  Thereby, when the one pedal mode is selected by the mode selection means, the color, color tone or display pattern of a part or all of the power generation degree display unit is changed and notified in the modes other than the one pedal mode. If the SOC of the battery detected by the SOC detection means is equal to or greater than the predetermined value, the color, color tone or display pattern of a part or all of the power generation degree display unit according to the SOC compared to when regenerative braking is not limited. Furthermore, by changing and informing, it is possible to favorably inform the driver whether or not the one-pedal mode is selected and how much the regenerative braking is limited.

  In another aspect, the notification means makes the color tone of the power generation degree display section darker than when in the mode other than the one pedal mode, and the control means causes the mode selection means to When the one pedal mode is selected, if the SOC of the battery detected by the SOC detection means is equal to or greater than a predetermined value, a part of the power generation degree display unit compared to when the regenerative braking is not limited Alternatively, it is desirable to control the notification means so as to lighten and notify the whole color tone according to the increase of the SOC.

  Thereby, when the one pedal mode is selected, the tone of the power generation degree display section is darkened and informed as compared with the modes other than the one pedal mode, and the power generation degree display is displayed as compared with the case where the regenerative braking is not limited. The motor is controlled so as to limit the increase in SOC, that is, the regenerative braking while notifying that the one-pedal mode is selected by lightening and reporting the color tone of part or all of the unit in accordance with the increase in SOC. For example, the tone of part or all of the power generation degree display section is lightened as the regenerative braking of the vehicle is controlled, for example, the regenerative braking power approaches the light color close to the low mode compared to the one pedal mode such as the normal traveling mode. It is possible to make it easy for the driver to understand how much regenerative braking is limited.

  As another aspect, when the one pedal mode is selected by the mode selection means, the control means displays the power generation degree when the SOC of the battery detected by the SOC detection means is equal to or more than a predetermined value. It is desirable to control the notification means so as to change and notify the color, the color tone or the display pattern of the area above the degree at which the power generation by the motor can be maximized according to the SOC of the part.

Thereby, when the SOC of the battery is equal to or more than the predetermined value, the color, the color tone or the display pattern of the area at which the power generation by the motor can be maximized can be changed and notified according to the SOC in the power generation degree display unit. Thus, it is possible to better notify the driver of the regenerative braking degree by the regenerative braking according to the SOC.
In another aspect, the regenerative braking limit commanding means comprises a wheel rotational speed detecting means for detecting the rotational speed of the drive wheel, and the control means is for rotating the drive wheel detected by the wheel rotational speed detecting means. It is desirable to control the regenerative braking of the motor so as to limit the regenerative braking when it is determined that the ground contact state of the drive wheels with the road surface, which is determined from the number, is an idle state.

  Thereby, when it is determined that the ground contact state of the drive wheel with the road surface, which is determined from the rotation number of the drive wheel detected by the wheel rotation number detection means, is idling, the motor is controlled to limit regenerative braking. By controlling the regenerative braking, for example, when the vehicle is traveling on a road surface where a wheel is likely to slip, such as a snowy road, there is a possibility that the driving wheel may slip due to the braking force by the regenerative brake applied to the driving wheel. It is possible to notify the driver that the regenerative brake is restricted by using a notifying means and notifying the driver that the brake is restricted, and for example, to urge the operation of the friction brake device by the driver.

  According to the vehicle of the present invention, when the one-pedal mode is selected by the mode selection means, the regenerative braking of the motor is limited so as to limit the regenerative braking when the regenerative braking limit command means issues the regenerative braking limit command. Since the control means controls the stage notification means to control and notify in different manners as compared with the case where the regenerative braking is not limited, for example, the regenerative braking limit command means the regenerative braking limit command when the battery is fully charged If the mode is assumed to be such that the regeneration degree is large, such as in the one pedal mode, and the battery is fully charged, in other words, if deceleration by the regenerative brake can not be performed. It is possible to notify the driver that the regenerative brake is limited using the notification means and the regenerative brake is limited to .

That is, it is possible to notify the driver that the regenerative brake is not activated in advance, and brake the vehicle using, for example, the operation of a friction brake device as a braking unit or a means such as an air conditioner consuming power.
As a result, it is possible to provide a regeneration control device for a vehicle that enables the driver to visually recognize whether or not the regenerative brake by the motor can be operated when the one pedal mode is set.

It is a schematic block diagram of a vehicle. It is a top view of a meter panel. FIG. 3 is a block diagram showing a connection configuration of an ECU related to control of a vehicle according to the present invention. It is the flowchart in which the routine which shows the control procedure of the vehicle which concerns on this invention which ECU performs is shown. It is an enlarged view of the A section in FIG. 2 when one pedal mode is an OFF state. FIG. 3 is an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery is less than 90% in the first embodiment. FIG. 3 is an enlarged view of a portion A in FIG. 2 when the one pedal mode is in the ON state and the SOC of the battery is 90% or more and less than 98% in the first embodiment. FIG. 3 is an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery is 98% or more in the first embodiment. FIG. 9 is an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery is 80% or more in the second embodiment.

Hereinafter, an embodiment of the present invention will be described based on the drawings.
First Embodiment
Referring to FIG. 1, a schematic block diagram of a vehicle 1 is shown.
The vehicle 1 is a so-called electric vehicle on which a drive wheel 3, a motor 7, a reduction gear 9, a battery 11, and a driver's seat 20 are mounted. Electric power is supplied from the battery 11 and the motor 7 is driven, and the driving wheel 3 can be driven via the reduction gear 9 to accelerate the vehicle 1. Further, the motor 7 can generate electric power by transmitting the driving force from the driving wheels 3 driven by the traveling vehicle 1 through the reduction gear 9 and can supply electric power to the battery 11, and the electric power is driven by the electric power generation. The vehicle 1 can be decelerated by operating a so-called regenerative brake that decelerates the wheel 3 (regenerative braking).

  The driver's seat 20 is provided with an accelerator pedal (acceleration / deceleration operation means) 21, a brake pedal (braking means) 22, a meter panel 23, and a mode switching button (mode selection means) 45. The mode switching button 45 has a normal travel mode (a mode other than the one pedal mode), a so-called one pedal mode, etc., in which the vehicle 1 can be operated from start to stop by adjusting the depression amount of the accelerator pedal 21. The travel mode of the vehicle 1 can be selected. The decelerating force of the vehicle 1 when the one pedal mode is selected is, for example, a decelerating force corresponding to a so-called engine brake in a vehicle equipped with an engine and a transmission. In particular, in a so-called low speed region such as when the vehicle speed is less than 40 km / h, for example, it is possible to decelerate with the reduction gear equivalent to the low gear.

  The accelerator pedal 21 can be in the acceleration state by being depressed by the driver and can be in the regenerative braking state by not being depressed. For example, when the depression amount of the accelerator pedal 21 is half or more of the movable range, the ECU (control means) 50 described later determines that the driver is accelerating and the motor 7 sets the depression amount of the accelerator pedal 21 to The vehicle 1 is accelerated by driving with the corresponding driving force. Further, when the depression amount of the accelerator pedal 21 is less than half of the movable range, the ECU 50 determines that the driver is operating the regenerative brake, and the motor 7 generates electric power according to the depression amount of the accelerator pedal 21 and regenerates. The brake is applied to decelerate the vehicle 1.

  Further, when the mode switching button 45 is operated and the travel mode is set to the one pedal mode, the ECU 50 stops the traveling vehicle 1 by the regenerative brake when the accelerator pedal 21 is not depressed. The motor 7 is controlled to gradually decelerate. At this time, when the SOC of the battery 11 detected by the SOC sensor (regenerative braking restriction command means, SOC detection means) 11a that detects the SOC of the battery 11 is, for example, 80% or more, the ECU 50 Control is performed so as to be half as compared with the case where the SOC of the battery 11 is less than 80%, and when the SOC of the battery 11 is, for example, 98% or more, control is performed so that power generation and deceleration by regenerative braking are not performed.

  The brake pedal 22 is connected to a friction brake device (braking means) 22a provided in the vicinity of the drive wheel 3 and the driven wheel 4 via a hydraulic cable 22b, and operates the friction brake device 22a by being depressed. Thus, both the drive wheel 3 and the driven wheel 4 can be braked. That is, if the deceleration by the regenerative brake is less than the degree of deceleration required by the driver, or if it is desired to brake both the drive wheel 3 and the driven wheel 4 to increase the braking force of the vehicle 1, adjust the brake pedal 22 However, by stepping on the pressure, the friction brake device 22a can be operated to brake both the drive wheel 3 and the driven wheel 4 to decelerate the vehicle 1.

  In the vicinity of the drive wheel 3, a wheel sensor (regenerative braking restriction command means, wheel rotation speed detection means) 24 for detecting the rotation speed of the drive wheel 3 is provided. The ECU 50 described later can calculate the traveling speed of the vehicle 1 and the angular acceleration of the drive wheel 3 by performing processing such as calculation from the rotational speed of the drive wheel 3 detected by the wheel sensor 24. That is, when the angular acceleration of the drive wheel 3 fluctuates rapidly, the ECU 50 can determine that the drive wheel 3 is in a slipping state, for example, on a slippery road surface such as a snowy road.

Referring to FIG. 2, a plan view of the meter panel 23 is shown.
The meter panel 23 is a liquid crystal panel on which the speed meter 25, the SOC meter 27, and the regenerative gauge (input / output power display means) 29 are displayed.
The speed meter 25 is an image imitating an analog meter or an analog meter constituted by the speed display unit 25a and the speed pointer 25b, and the speed pointer 25b rotates in accordance with the vehicle speed of the vehicle 1, and the tip of the speed pointer 25b The driver can visually recognize the speed of the vehicle 1 by instructing the scale displayed on the speed display 25a or the numerical value (not shown). The speed of the vehicle 1 may be displayed by characters.

The SOC meter 27 displays the remaining amount of the battery 11 by increasing or decreasing the remaining area 27a, and the driver can visually recognize the remaining amount of the battery 11. Note that the SOC may be displayed by characters.
The regenerative gauge 29 is an image imitating an analog meter or an analog meter composed of the power display unit 31 and the power pointer 33, and the power pointer 33 rotates in accordance with the usage condition of the power of the motor 7, and the power pointer When the pointed portion 33a of 33 indicates the scale displayed on the power display unit 31 or a numerical value not shown, the driver can visually recognize the use condition of the power of the motor 7.

  Specifically, the power display unit 31 has an output display range 41 for the range from the vertical direction upper side to the left side in the left and right direction to the right side in the horizontal direction and a regenerative display range (power generation degree display unit, notification means) It is. That is, when the pointed portion 33a of the power pointer 33 designates the output display range 41, it is in the accelerating state, and when the pointed portion 33a of the power pointer 33 designates the regenerative display range 43, it is in the regenerative braking state.

The ECU 50 is a control device for performing comprehensive control including operation control of the motor 7, and includes an input / output device, a storage device (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), etc. It consists of
Referring to FIG. 3, a connection configuration of the ECU 50 related to the control of the vehicle 1 according to the present invention is shown in a block diagram.

  The SOC sensor 11a, the accelerator pedal 21, the wheel sensor 24, and the mode switching button 45 are electrically connected to the input side of the ECU 50. The SOC sensor 11a detects the SOC of the battery 11, and the accelerator pedal 21 The depression amount of the accelerator pedal 21 by the driver is detected, the rotation speed of the drive wheel 3 is detected from the wheel sensor 24, and the operation mode selected by the driver is detected from the mode switching button 45.

Further, the motor 7 and the meter panel 23 are electrically connected to the output side of the ECU 50, and by controlling the motor 7, the vehicle 1 can be brought into an acceleration state or a regenerative braking state. By controlling, the display of the regenerative gauge 29 can be changed.
Referring to FIG. 4, a flow chart shows a routine executed by the ECU 50 to indicate the control procedure of the regeneration control device for a vehicle according to the present invention. Referring to FIG. 5, an enlarged view of a portion A in FIG. 2 when the one pedal mode is in the OFF state is shown. Referring to FIG. 6, an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery 11 is less than 90% is shown. Referring to FIG. 7, an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery 11 is 90% or more and less than 98% is shown. Referring to FIG. 8, an enlarged view of a portion A in FIG. 2 when the one pedal mode is in the ON state and the SOC of the battery 11 is 98% or more is shown. Hereinafter, the display of the regenerative gauge 29 by the control of the ECU 50 will be described with reference to FIGS. 4 to 8.

  In step S10, it is detected whether or not the mode switching button 45 is operated by the driver, and it is determined whether or not the one pedal mode is set. When it is determined that the one pedal mode is not set, this routine ends. At this time, only the scale 52 is displayed as the regenerative display range 43 (FIG. 5). When it is determined that the one pedal mode is set, the process proceeds to step S11.

That is, only when the driver operates the mode switching button 45 and the one pedal mode is set, step S11 and subsequent steps of this routine are performed.
In step S11, it is determined from the rotational speed of the drive wheel 3 detected by the wheel sensor 24 whether or not the drive wheel 3 is slipping. When it is determined that the drive wheel 3 is in a slipping state, the process proceeds to step S30, the regenerative brake by the motor 7 is turned off (regeneration OFF state), and the process proceeds to step S32. In step S32, the one-pedal mode display frame (informing means) 54 of the regenerative display range 43 is lighted (grayed out) in gray, for example, and the warning unit 60 within the regenerative display range 43 "OFF" is displayed (FIG. 8), and this routine ends. When it is determined that the drive wheel 3 is not slipping, the process proceeds to step S12.

  That is, in step S11, it is determined from the rotational speed of the drive wheel 3 detected by the wheel sensor 24 whether or not the drive wheel 3 is in a slipped state, and the drive wheel 3 is in a slipped state When it makes a decision, the drive wheel 3 may continue to slip if deceleration by the regenerative brake is performed only with the drive wheel 3. Therefore, the process proceeds to step S26 and the regenerative brake is turned off (regeneration OFF state). As a result, the drive wheel 3 is not slipping. At this time, the one-pedal mode display frame 54 of the regenerative display range 43 is lighted (grayed out) in gray, for example, and "Warning !! Regenerative brake OFF" is displayed in the warning unit 60 within the regenerative display range 43. Thus, it is recognized that the driver can not brake the drive wheel 3 by the regenerative brake, for example, depressing the brake pedal 22 to brake the drive wheel 3 and the driven wheel 4 together to decelerate the vehicle 1 can do.

  In step S12, it is determined whether the SOC of the battery 11 (hereinafter simply referred to as the SOC of the battery 11) detected by the SOC sensor 11a is less than 80% (predetermined value). When the SOC of the battery 11 is less than 80%, the process shifts to step S14, and the regenerative braking by the motor 7 becomes the maximum deceleration force of the motor 7 when the accelerator pedal 21 is not depressed (strong regenerative braking state) Then, the process proceeds to step S16. In step S16, for example, the one-pedal mode display frame (informing means) 54 is darkly lit and blue-displayed so as to cover the scale 52 of the regenerative display range 43 (FIG. 6), and this routine is ended. When the SOC of the battery 11 is 80% or more in step S12, the process proceeds to step S18.

  In step S18, it is determined whether the SOC of the battery 11 is less than 90%. When the SOC of the battery 11 is less than 90%, the process proceeds to step S20, the regenerative braking by the motor 7 is set to the strong regenerative braking state as in step S14, and the process proceeds to step S22. In step S22, the display pattern of the one pedal mode display frame 54 is changed to, for example, blinking display (FIG. 6), and this routine is ended. When the SOC of the battery 11 is 90% or more in step S18, the process proceeds to step S24.

  In step S24, it is determined whether the SOC of the battery 11 is less than 98%. When the SOC of the battery 11 is less than 98%, the process proceeds to step S26 so that the regenerative brake by the motor 7 becomes, for example, half of the strong regenerative braking state (weak regenerative braking state), and proceeds to step S28. In step S28, the one-pedal mode display frame 54 of the regenerative display range 43 is displayed blinking in red, for example, and “Warning !! Regenerative brake weak” is displayed in the warning unit 60 within the regenerative display range 43 ( Fig. 7), this routine ends.

  When the SOC of the battery 11 is 98% or more in step S24, the process proceeds to step S30 and step S32 as in the case where it is determined in step S11 that the driving wheel 3 is in the slipping state. For example, the 43 one-pedal mode display frame 54 is lightly grayed out (grayed out) in light gray and is displayed as “Warning !! Regenerative brake OFF” in the warning unit 60 within the range of the regenerative display range 43 (FIG. 8) , End this routine.

  That is, in step S18 and step S24, the case where the SOC of the battery 11 is less than 90%, 90% or more and less than 98%, 98% or more is determined, and the case where the SOC of the battery 11 is less than 90% is strong In the regenerative braking state (step S14, step S20), when the SOC of the battery 11 is 90% or more and less than 98%, the weak regenerative braking state (step S26) is made. When the SOC of the battery 11 is 98% or more, the regeneration OFF state As (Step S30), the one-pedal mode display frame 54 of the regenerative display range 43 is displayed in a different manner.

  Thereby, according to each state of SOC of the battery 11, when the SOC of the battery 11 is less than 90%, the one pedal mode display frame 54 is displayed in blue (step S16, step S22, FIG. 6), Informing the driver that it is in the strong regenerative braking state, and when the SOC of the battery 11 is 90% or more and less than 98%, the one pedal mode display frame 54 blinks in red and is displayed on the warning unit 60 (step In step S28, as shown in FIG. 7, the driver is informed that the weak regenerative braking state is present, and when the SOC of the battery 11 is 98% or more, the one pedal mode display frame 54 is displayed in gray and the warning unit 60 is displayed. (Step S32, FIG. 8) to notify the driver that regeneration is in the OFF state.

  Furthermore, in step S12, the case where the SOC of the battery 11 is less than 90% is further divided into the case where the SOC of the battery 11 is less than 80% and the case where the SOC of the battery 11 is 80% or more and less than 90%. When the SOC is less than 80%, the one pedal mode display frame 54 is displayed to light blue (step S16). When the SOC is 80% or more and less than 90% of the battery 11, the one pedal mode display frame 54 blinks blue. By changing and displaying the display pattern (step S22), it is possible to finely notify the driver of the regenerative braking state (FIG. 6).

  As described above, in the regeneration control device for a vehicle according to the first embodiment, the drive wheel 3 provided in the vehicle 1 is driven, and the motor 7 that receives the power from the drive wheel 3 and performs regenerative braking The battery 11 for inputting / outputting electric power to / from the motor 7, the accelerator pedal 21 capable of accelerating / decelerating the vehicle 1 by varying the degree of inputting / outputting of electric power to / from the battery 11 and the motor 7 The mode switch button 45 performs driving of the motor 7 and regenerative braking to accelerate the vehicle 1 and selects the one pedal mode for decelerating and stopping, and the SOC sensor 11a or the like as regenerative braking limit command means for issuing a limit command of regenerative braking. Regeneration display range of the regenerative gauge 29 as a notification means for notifying that the one pedal mode is selected by the wheel sensor 24 and the mode switching button 45 3 and an ECU 50 for controlling the driving of the motor 7 and regenerative braking in accordance with the operation of the accelerator pedal 21 in each mode selected by the mode switching button 45 and controlling the regenerative display range 43 of the regenerative gauge 29; The ECU 50 controls regenerative braking of the motor 7 to limit regenerative braking when the SOC sensor 11a or the wheel sensor 24 issues a regenerative braking limit command when the one pedal mode is selected by the mode switching button 45. In addition, the regenerative display range 43 of the regenerative gauge 29 is controlled so as to notify in a manner different from when regenerative braking is not restricted.

  Therefore, when the SOC of the battery 11 is 80% or more, the regenerative braking limit command is issued by the SOC sensor 11a which is the regenerative braking limit command means, so when the SOC of the battery 11 is 80% or more, That is, it is difficult to supply power to the battery 11 and to perform braking by the regenerative brake, so the regenerative brake is limited and the regenerative brake is limited to the driver using the regenerative display range 43 of the regenerative gauge 29. Can be notified.

  In addition, when it is determined that the ground contact state of the drive wheel 3 with the road surface determined by the rotation speed of the drive wheel 3 detected by the wheel sensor 24 is an idle state, that is, a slipping state, Since the regenerative braking is controlled, for example, when the vehicle 1 is traveling on a road surface where the driving wheels 3 and the driven wheels 4 easily slip like a snowy road, driving is performed by the braking force by the regenerative brake applied to the driving wheels 3 Since there is a possibility that the wheel 3 may slip, the driver is informed that the regenerative brake is limited using the regenerative display range 43 of the regenerative gauge 29 and the regenerative brake is limited, and the driver may, for example, brake pedal The operation of the friction brake device 22a using 22 can be promoted.

In other words, the driver is informed in advance that the regenerative brake does not operate, and for example, means such as operating the friction brake device 22a as the braking means, consuming power by the air conditioner (not shown), etc. The driver can be informed to brake the vehicle 1 using
Further, by notifying using the regenerative display range 43 of the regenerative gauge 29 that displays the input / output status of the power between the battery 11 and the motor 7, the notification by the notification means for the driver is the power between the battery 11 and the motor 7 Since it can be immediately recognized that the notification regarding the supply condition of the vehicle, that is, the notification that the deceleration of the vehicle 1 by the regenerative brake is limited, can be notified well.

  In particular, the regenerative gauge 29 is an image imitating an analog meter configured to have a regenerative display range 43 for displaying the degree of power generation by the motor 7, and the notification means performs regeneration when in a mode other than the one pedal mode. The color, color tone or display pattern of the one pedal mode display frame 54 of the display range 43 is changed and notified, and the ECU 50 detects by the SOC sensor 11 a when the one pedal mode is selected by the mode switching button 45 If the SOC of the battery 11 to be output is 80% or more, the color, color tone or display pattern of the one pedal mode display frame 54 is further changed according to the SOC and alerted as compared with the case where regenerative braking is not limited. Since the notification means is controlled, it is determined whether the one pedal mode is selected and how much regenerative braking is limited. Whether it is capable of satisfactorily informed by the driver.

  As another mode, the notification means makes the color tone of the regenerative display range 43 darker than in the modes other than the one pedal mode, and the ECU 50 selects the one pedal mode by the mode switching button 45. When the SOC of the battery 11 detected by the SOC sensor 11a is 80% or more, the color tone of the one pedal mode display frame 54 of the regenerative display range 43 is SOC as compared to when regenerative braking is not limited. By controlling the regenerative display range 43 of the regenerative gauge 29 to lighten and notify in accordance with the increase, it is possible to limit the increase in SOC, that is, the regenerative braking while notifying that the one pedal mode is selected. The tone of the one-pedal mode display frame 54 is lightened as the regenerative braking of the motor 7 is controlled. It is possible to live the braking force is gradually closer to the pale color close to the low mode in comparison with the one-pedal mode, to inform clarity to the driver or regenerative braking is how much restriction.

Second Embodiment
Hereinafter, the second embodiment will be described based on FIG.
The description of the configuration common to the first embodiment will be omitted, and only the portions different from the first embodiment will be described here.
9, an enlarged view of a portion A in FIG. 2 when the one pedal mode is ON and the SOC of the battery 11 is 80% (predetermined value) or more in the second embodiment is shown. There is.

  In the regenerative display range (power generation degree display unit, notification means) 143 of the electric power display unit 31, when the one pedal mode is ON and the SOC of the battery 11 is 80% or more, the regeneration possible area 154 and the regeneration limit line 156 , The regeneration impossible area 158 is displayed. When the SOC of the battery 11 is 80% or more, the ECU 50 limits the degree of power generation by the regenerative brake performed by the motor 7 based on the SOC of the battery 11, and the regeneration limit line 156 has an SOC of, for example, based on the SOC of the battery 11. The maximum value of the power generation possible degree by the regenerative brake when the power generation possible degree by the regenerative brake is limited to the decrease side is shown in proportion to the change from 80% to 100%. At this time, the regenerable area 154 is darkly lit blue as a range of the power generation possible degree, and the regeneration impossible area 158 blinks blue according to the movement of the position of the regeneration limit line 156, blinks red, and dimly Make it light gray.

  As described above, in the regeneration control device for a vehicle according to the second embodiment, the ECU 50 detects that the SOC of the battery 11 detected by the SOC sensor 11a is 80 when the one pedal mode is selected by the mode switching button 45. Controls the regenerative display range 143 so as to change and notify the color, color tone or display pattern of the region of the regenerative display range 143 or more in which the power generation by the motor 7 can be maximized according to the SOC in the regenerative display range 143 As a result, it is possible to better notify the driver of the degree of regenerative braking by the regenerative brake according to the SOC.

This completes the description of the vehicle according to the present invention, but the present invention is not limited to the above embodiment, and can be changed without departing from the scope of the invention.
For example, in the present embodiment, the vehicle 1 is an electric vehicle, but it may be a so-called hybrid vehicle equipped with an engine.
Further, in the present embodiment, the meter panel 23 has been described as a liquid crystal panel, but a mechanical analog meter may be used, and only a portion corresponding to the regenerative display ranges 43 and 143 may be a liquid crystal panel. The liquid crystal panel or the LED may be provided only in the portion corresponding to the one pedal mode display frame 54 and the warning unit 60 in the output display range 41.

  Further, in the present embodiment, in the first embodiment, according to the SOC of the battery 11, the color, color tone or color of the one pedal mode display frame 54 which is a part of the power generation degree display portion covering the scale 52 of the regenerative display range 43. Although the display pattern is made different, the color, color tone or display pattern of the entire regenerative display range 43 which is the entire power generation degree display unit may be made different.

1 vehicle 3 drive wheel 7 motor 11 battery 11a SOC sensor (regeneration braking restriction command means, SOC detection means)
21 accelerator pedal (acceleration / deceleration operation means)
22 brake pedal 22a friction brake device 23 meter panel 24 wheel sensor (regeneration braking limit command means, wheel rotation speed detection means)
29 Regenerative gauge (input and output power display means)
43, 143 Regeneration display range (power generation degree indicator, notification means)
45 Mode switching button (mode selection means)
50 ECU (control means)
54 One pedal mode display frame (informing means)

Claims (7)

A motor for driving a drive wheel provided in the vehicle and performing regenerative braking by receiving power from the drive wheel;
A battery that performs input and output of electric power with the motor;
Acceleration / deceleration operation means capable of accelerating / decelerating the vehicle by varying the input / output degree of power between the battery and the motor;
Mode selection means for performing mode selection among a plurality of modes including a one-pedal mode in which the driving of the motor and the regenerative braking are performed only by the acceleration / deceleration operation means to accelerate the vehicle and to decelerate and stop the vehicle;
Regenerative braking limit command means for issuing a limit command of the regenerative braking;
Notification means for notifying that the one pedal mode is selected by the mode selection means;
Control means for controlling the driving of the motor and the regenerative braking in accordance with the operation of the acceleration / deceleration operation means for each mode selected by the mode selection means, and controlling the notification means;
When the one-pedal mode is selected by the mode selection means, the control means may limit the regenerative braking when the regenerative braking limit command means issues the regenerative braking limit command. A regenerative control device for a vehicle, which controls the regenerative braking and controls the notifying means to notify in a different mode as compared to when the regenerative braking is not restricted. It has input / output power display means for displaying the input / output status of power between the battery and the motor,
The regeneration control device for a vehicle according to claim 1, wherein the notification unit notifies using the input / output power display unit. The regenerative braking limit commanding means comprises SOC detection means for detecting the SOC of the battery,
The vehicle according to claim 2, wherein the control means controls the regenerative braking of the motor to limit the regenerative braking when the SOC of the battery detected by the SOC detecting means is equal to or greater than a predetermined value. Regenerative control device. The input / output power display means is an analog meter or an image imitating an analog meter configured to have a power generation degree display unit for displaying the power generation degree by the motor, and the notification means is other than the one pedal mode. In the mode, notification is made by changing the color, color tone or display pattern of part or all of the power generation degree display section.
When the one pedal mode is selected by the mode selection means, the control means determines that the regenerative braking is not limited if the SOC of the battery detected by the SOC detection means is equal to or greater than a predetermined value. 4. The regeneration control device for a vehicle according to claim 3, wherein said notification means is controlled such that the color, color tone or display pattern of a part or all of the power generation degree display unit is further changed according to SOC. . The notification means provides notification by making the color tone of the power generation degree display section darker than in the mode other than the one pedal mode.
When the one pedal mode is selected by the mode selection means, the control means determines that the regenerative braking is not limited if the SOC of the battery detected by the SOC detection means is equal to or greater than a predetermined value. 5. The regeneration control device for a vehicle according to claim 4, wherein said notification means is controlled to lighten and notify the color tone of a part or all of the power generation degree display part according to an increase in SOC as compared with.   When the one pedal mode is selected by the mode selection unit, the control unit determines that the SOC of the power generation degree display unit is SOC when the SOC of the battery detected by the SOC detection unit is equal to or greater than a predetermined value. 5. The regeneration control device for a vehicle according to claim 4, wherein said notification means is controlled to change and notify the color, color tone or display pattern of an area above the degree at which power generation by said motor can be maximized. The regenerative braking limit commanding means comprises wheel rotational speed detecting means for detecting the rotational speed of the drive wheel,
The control means limits the regenerative braking when it is determined that the ground contact state of the drive wheel with the road surface determined by the rotational speed of the drive wheel detected by the wheel rotational speed detection means is an idle state. The regenerative control device for a vehicle according to claim 2, wherein the regenerative braking of the motor is controlled so as to be performed.

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