JP5050712B2 - Display device for hybrid vehicle - Google Patents

Description

  The present invention relates to a display device for a hybrid vehicle that displays a charge amount of a battery by power generation by engine output and a charge amount by travel regenerative power generation.

In current hybrid vehicles, etc., a display device that instantaneously displays the amount of assist (discharge) from the motor (battery) of the hybrid system and the amount of charge to the battery due to regeneration, and a display that displays past history of the amount of regenerative charge, etc. There are devices. Furthermore, in the prior art, the amount of discharge in an arbitrary period is displayed (for example, Patent Document 1).
JP-A-11-351942

  However, since the breakdown of the charging amount due to engine charging and the charging amount due to regeneration is unknown, the driver can grasp the simple charge / discharge amount of electric power, but cannot determine whether his driving pattern is fuel consumption driving or not.

  The present invention relates to a display device for a hybrid vehicle comprising an engine, a battery, and a motor generator that charges the battery by at least one of electric power generated by the engine output and driving regenerative power generation by driving energy of the vehicle. Discharge amount detection means for detecting the discharge amount from the battery in the battery, first charge amount detection means for detecting the charge amount by the power generation by the engine output to the battery in a predetermined period, and charging by the traveling regenerative power generation in the battery A second charge amount detecting means for detecting the amount; an amount corresponding to the discharge amount detected by the discharge amount detecting means; and a charge amount detected by the first charge amount detecting means and the second charge amount detecting means. Discharge amount display area, first charge amount display area, and second charge amount display area in which the amount is displayed Characterized in that it comprises a display device having a.

  According to the display device for a hybrid vehicle according to the present invention, the display unit displays the discharge amount display region, the first charge amount display region, and the second charge amount display region. This can contribute to the determination of whether or not the vehicle is running on fuel.

-First embodiment-
The first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the hybrid vehicle according to the first embodiment. The hybrid vehicle according to the first embodiment includes an engine 1 and a motor generator 2 and travels by driving force of either one or both of the engine 1 and the motor generator 2. The motor generator 2 starts the engine 1 and assists the engine 1 to drive the vehicle and perform regenerative braking.

  Inverter 3 converts DC power of battery 4 into AC power and supplies it to motor generator 2, and also converts AC generated power of motor generator 2 into DC power to charge battery 4. The AC generated power of the motor generator 2 is at least one of the generated power generated by the output of the engine 1 and the travel regenerative power generated by the travel energy of the vehicle. The battery 4 is an assembled battery in which a plurality of cell batteries are connected in series and parallel, and a lithium ion battery, a nickel hydrogen battery, or the like is used.

  The controller 5 includes a CPU, a memory, an A / D converter, a battery backup memory, and the like, and adjusts the fuel injection amount and ignition timing of the engine 1 to control its rotational speed and torque, and to the motor generator 2 by the inverter 3. The rotation speed and torque are controlled by adjusting the supplied voltage and current. Furthermore, the controller 5 controls the display drive circuit 6 to control the display screen of the display 7 to be described later.

  Connected to the controller 5 are a display drive circuit 6, a main switch 8, a setting operation unit 9, a battery sensor 41 for detecting the charge / discharge amount of the battery 4, and the like. The battery sensor 41 detects the charge amount and the discharge amount of the battery 4 using the voltage value and the current value detected by the voltage sensor and the current sensor, and outputs them to the controller 5. Regarding the charge amount of the battery 4, the battery sensor 41 detects the charge amount charged by the power generation by the output of the engine 1 and the charge amount by the traveling regenerative power generation of the vehicle.

  The main switch 8 is closed when the vehicle key is set to the ON position or the START position. The setting operation unit 9 includes, for example, various operation buttons and a cross key, and outputs various signals to the controller 5 in accordance with the operation content of the driver. By the operation of the setting operation unit 9, for example, display switching between a charge / discharge information screen and a charge / discharge history screen described later, time setting, charge / discharge amount display start and display end time on the charge / discharge information screen and charge / discharge history screen Or the display period can be set.

  The display drive circuit 6 displays either a charge / discharge information screen or a charge / discharge history screen indicating the charge / discharge amount with respect to the battery 4 on the display unit 7 in accordance with a display command from the controller 5. When the controller 5 receives a switching signal that is output in accordance with the operation of the setting operation unit 9 by the driver, the controller 5 drives to display a switching instruction signal that instructs switching of the display between the charge / discharge information screen and the charge history screen. Output to the circuit 6. When the display drive circuit 6 receives the switching instruction signal, the display 7 switches the display to the charging history screen when the charging / discharging information screen is displayed on the display 7, and the charging / discharging information when the charging history screen is displayed. Switch the display to the screen.

  FIG. 2 shows a charge / discharge information screen displayed on the display unit 7. As shown in FIG. 2A, on the charge / discharge information screen, for example, the discharge amount and the charge amount of the battery 4 in one trip are displayed as bar graphs 20 and 21, respectively, as a predetermined period based on the detection result. The The 1 trip described above is a period from when the driver starts the engine 1 to when it stops. Moreover, you may comprise so that a predetermined period may be set by operation of the setting operation part 9 by a driver | operator. Based on the discharge amount and charge amount detection results described above, the bar graph 20 is displayed on the right side of the screen with the center of the screen set to zero according to the discharge amount of the battery 4, and the bar graph 21 indicates the charge amount of the battery 4. In response, it is displayed on the left side of the screen with the center of the screen as zero. Furthermore, the bar graph 21 is a dark color bar graph 21a that is darkly displayed according to the amount of charge of the battery 4 by traveling regenerative power generation, and a light color that is lightly displayed according to the amount of charge charged by power generation by the output of the engine 1. And a bar graph 21b.

  FIG. 2B is a display example of a charge / discharge information screen when the battery 4 is not charged by power generation by the output of the engine 1. In this case, the light-colored bar graph 21b representing the charge amount charged by the power generation by the output of the engine 1 is not displayed.

  FIG. 3 shows a charge / discharge history screen displayed on the display unit 7. In the charge / discharge history screen, for example, the accumulated value of the charge amount and the discharge amount of the battery 4 every 5 minutes in a predetermined period set by the driver is displayed. Based on the discharge amount and charge amount detection results described above, the bar graph 30 is displayed on the lower side of the screen with the center of the screen being zero according to the discharge amount of the battery 4, and the bar graph 31 is the charge amount of the battery 4. In response to this, it is displayed on the upper side of the screen with the center of the screen as zero. Further, the bar graph 31 is a dark color bar graph 31a that is darkly displayed according to the amount of charge of the battery 4 by traveling regenerative power generation, and a light color that is lightly displayed according to the amount of charge charged by power generation by the output of the engine 1. And a bar graph 31b.

According to the first embodiment described above, the following operational effects can be obtained.
(1) On the charge / discharge information screen, the amount of charge of the battery 4 generated by running regenerative power generation of the vehicle in a predetermined period is displayed as a dark bar graph 21a, and the amount of charge of the battery 4 charged by power generation by the output of the engine 1 Is displayed as a light bar graph 21b. Therefore, unlike the conventional display device shown in FIG. 4 (a), in which the charge amount and the discharge amount of the battery 4 are each displayed as a bar graph, the driver is charged by the traveling regenerative power generation and the output of the engine 1 It is possible to recognize the absolute amount, the breakdown, and the ratio of charging due to power generation. As a result, the driver can determine whether or not the driving pattern in the set predetermined period is fuel consumption driving.

(2) Also on the charge / discharge history screen, the accumulated value of the charge amount of the battery 4 by the traveling regenerative power generation for every predetermined time in a predetermined period is displayed by the dark bar graph 30a and charged by the power generation by the output of the engine 1 The accumulated value of the charge amount of the battery 4 is displayed as a light color bar graph 30b. Therefore, unlike the conventional display device shown in FIG. 4B, the accumulated value of the charge amount of the battery 4 for each predetermined time is displayed as history data in a bar graph, so the above (1) and Similar effects can be obtained.

-Second Embodiment-
With reference to the drawings, a second embodiment of the display device according to the present invention will be described. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and different points will be mainly described. Points that are not particularly described are the same as those in the first embodiment. In the present embodiment, in addition to the bar graph display on the charge / discharge information screen, the charge amount charged by the power generation by the engine output is displayed as a value converted to the fuel consumption amount consumed by the engine 1. This is different from the embodiment.

The controller 5 uses the following equation (1) to convert the amount of charge charged by the power generation by the output of the engine 1 detected in the same manner as in the first embodiment into the fuel consumption amount of the engine 1.
Δfuel1 = k1 · Δbat1 (1)
Δfuel1 is the fuel consumption amount of the engine 1, Δbat1 is the amount of charge charged by the power generation by the output of the engine 1 of the battery 4, and the constant k1 is a constant calculated in advance through experiments or the like.

  The controller 5 instructs the display drive circuit 6 to display the converted fuel consumption on the display 7. FIG. 5 shows a charge / discharge information screen in the second embodiment. FIG. 5A shows a case where the fuel consumption of the engine 1 converted by the controller 5 as described above is 1.0 L. At this time, in addition to the display of the bar graph 20, the dark bar graph 21a, and the light bar graph 21b on the charge / discharge information screen shown in FIG. .0L "is displayed as the converted fuel consumption.

  When the converted fuel consumption is equal to or less than the predetermined value, the controller 5 determines that the driving pattern is not fuel consumption travel, and instructs the display drive circuit 6 to display the determination result on the display 7. FIG. 5B shows a charge / discharge information screen when the converted fuel consumption of the engine 1 is 0.0L. At this time, in addition to the bar graph 20, dark bar graph 21a, and fuel consumption display on the charge / discharge information screen shown in FIG. 5A, the determination result is, for example, “Good Driving !!” Message is displayed.

According to the second embodiment described above, in addition to the functions and effects obtained in the first embodiment, the following functions and effects are obtained.
(1) The controller 5 converts the charge amount of the battery 4 charged by the power generation by the output of the engine 1 into the fuel consumption amount by the engine 1, and displays the converted fuel consumption amount on the charge / discharge information screen. . Therefore, since the fuel consumption amount used for charging the battery 4 discharged during acceleration or the like during a predetermined period by the power generation by the output of the engine 1 can be recognized, the driver can check whether the driving pattern is a fuel-efficient driving or not. Can be easily determined.

(2) When the converted fuel consumption is equal to or less than the predetermined value, the controller 5 determines that the driving pattern is not fuel consumption driving and displays the determination result on the charge / discharge information screen. Therefore, the driver can determine whether or not the driving in the predetermined period is the fuel consumption driving.

-Third embodiment-
A third embodiment of a display device according to the present invention will be described with reference to the drawings. In the following description, the same components as those in the second embodiment are denoted by the same reference numerals, and different points will be mainly described. Points that are not particularly described are the same as those in the second embodiment. In this embodiment, in addition to the bar graph display on the charge / discharge information screen and the display of the value obtained by converting the amount of charge charged by power generation by engine output into fuel consumption, the amount of charge charged by traveling regenerative power generation is This is different from the second embodiment in that a value converted into a fuel saving amount when consumed by the engine 1 is displayed.

The controller 5 is necessary when the engine 1 is charged with the same charge amount as the vehicle regenerative power generation calculated in the same manner as in the first embodiment using the following equation (2). The fuel consumption of the engine 1 is calculated. That is, it is converted into a fuel saving amount that is not consumed by the engine 1 due to charging by traveling regenerative power generation.
Δfuel2 = k2 ・ Δbat2 (2)
Here, Δfuel2 is the fuel consumption amount of the engine 1, Δbat2 is the charge amount of the battery 4 due to traveling regenerative power generation, and the constant k2 is a constant calculated in advance through experiments or the like.

  The controller 5 instructs the display drive circuit 6 to display the converted fuel saving amount on the display unit 7. FIG. 6 shows a charge / discharge information screen according to the third embodiment. In FIG. 6 (a), the fuel consumption of the engine 1 converted by the controller 5 as described above is 1.0L, and the fuel saving amount converted from the charging amount by the traveling regenerative power generation is 2.0L. Show the case. At this time, in addition to the bar graph 20, dark bar graph 21a, light color bar graph 21b, and fuel consumption display on the charge / discharge information screen shown in FIG. A fuel saving amount such as “The fuel saving amount is 2.0 L” is displayed.

  When the converted fuel consumption is less than or equal to the predetermined value, the controller 5 determines that the driving pattern is not fuel consumption driving, as in the case of the second embodiment, and instructs the display driving circuit 6 to determine the determination result. Is displayed on the display unit 7. In this case, as shown in FIG. 6B, in addition to the display of the bar graph 20, the dark bar graph 21a, the fuel consumption amount and the fuel saving amount on the charge / discharge information screen, as a determination result, for example, “Good Driving A message like "!!" is displayed.

  In the third embodiment described above, the following functions and effects are obtained in addition to the functions and effects obtained in the second embodiment. The controller 5 converts the charge amount by the traveling regenerative power generation in the set predetermined period into the fuel saving amount when the same charging amount is generated by consuming the fuel by the engine 1, and fills the converted fuel saving amount. Displayed on the discharge information screen. Accordingly, the driver can grasp the fuel consumption saving amount of the engine 1 charged by the traveling regenerative power generation in an arbitrary period.

The first to third embodiments described above can be modified as follows.
The bar graphs 20 and 21 displayed on the charge / discharge information screen may be displayed in the vertical direction as shown in FIG. In this case, the bar graph 20 is displayed on the lower side of the screen with the center of the screen being zero according to the amount of discharge of the battery 4, and the bar graph 21 is the upper side of the screen with the center of the screen being zero according to the amount of charge of the battery 4. Is displayed. A dark bar graph 21a is displayed according to the amount of charge of the battery 4 by traveling regenerative power generation, and a light color bar graph 21b is displayed according to the amount of charge charged by power generation by the output of the engine 1.

  The correspondence between the constituent elements of the claims and the constituent elements of the first to third embodiments is as follows. That is, the controller 5 constitutes a discharge amount calculation means, a fuel consumption conversion means and a fuel saving amount conversion means, the battery sensor 41 constitutes first and second charge amount calculation means, and the display 7 constitutes a display. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram explaining the structure of the hybrid vehicle in embodiment. It is a figure explaining the screen which displays the charge / discharge amount of the battery of the predetermined period in 1st Embodiment, (a) shows the case where the battery is charged by the electric power generation by an engine output, (b) is The case where the battery is not charged by the power generation by the engine output is shown. It is a figure explaining the screen which displays the log | history of the charge / discharge amount of the battery for every predetermined time in the predetermined period in 1st Embodiment. It is a figure explaining the screen which displays the charging / discharging amount of the battery by a prior art, (a) shows the case where the instantaneous display of charging / discharging amount is shown, (b) displays the log | history of the charging amount by driving | running | working regenerative power generation. Show the case. It is a figure explaining the screen which displays the charging / discharging amount of the battery of the predetermined period in 2nd Embodiment, (a) shows the case where the battery is charged by the electric power generation by an engine output, (b) is The case where the battery is not charged by the power generation by the engine output is shown. It is a figure explaining the screen which displays the charge / discharge amount of the battery of the predetermined period in 3rd Embodiment, (a) shows the case where a battery is charged by the electric power generation by an engine output, (b) is The case where the battery is not charged by the power generation by the engine output is shown. It is a figure explaining the screen which displays the charge / discharge amount of the battery of the predetermined period in a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Engine, 2 ... Motor generator, 4 ... Battery, 5 ... Controller,
7 ... Display, 41 ... Battery sensor

Claims (7)

A display device for a hybrid vehicle comprising an engine, a battery, and a motor generator that charges the battery with at least one of power generated by engine output and travel regenerative power generated by travel energy of the vehicle,
A discharge amount detecting means for detecting a discharge amount from the battery in a predetermined period;
First charge amount detection means for detecting a charge amount by power generation by engine output for the battery in a predetermined period;
Second charge amount detection means for detecting a charge amount by traveling regenerative power generation for the battery in a predetermined period;
A discharge amount display area in which an amount corresponding to the discharge amount detected by the discharge amount detection means is displayed;
A charge amount display area in which an amount corresponding to the charge amount of the battery is displayed, and a first charge amount in which an amount according to the charge amount generated by the engine output detected by the first charge amount detection means is displayed. An indicator having a display area and a second charge amount display area in which an amount corresponding to the charge amount by the traveling regenerative power generation detected by the second charge amount detection means is displayed;
The display device for a hybrid vehicle, wherein the first charge amount display area and the second charge amount display area are displayed in different display areas in the charge amount display area . A display device for a hybrid vehicle comprising an engine, a battery, and a motor generator that charges the battery with at least one of power generated by engine output and travel regenerative power generated by travel energy of the vehicle,
First charge amount detection means for detecting a charge amount by power generation by engine output for the battery in a predetermined period;
Second charge amount detection means for detecting a charge amount by traveling regenerative power generation for the battery in a predetermined period;
By a first charge amount display area in which an amount according to the amount of charge generated by the engine output detected by the first charge amount detection means is displayed, and by traveling regenerative power generation detected by the second charge amount detection means A display device having a second charge amount display area in which an amount corresponding to the charge amount is displayed;
The charge amount of the battery in a predetermined period is displayed as a cumulative value of the charge amount generated by the engine output and a cumulative value of the charge amount generated by the traveling regenerative power generation.
A display device for a hybrid vehicle characterized by the above. A display device for a hybrid vehicle comprising an engine, a battery, and a motor generator that charges the battery with at least one of power generated by engine output and travel regenerative power generated by travel energy of the vehicle,
A discharge amount detecting means for detecting a discharge amount from the battery in a predetermined period;
First charge amount detection means for detecting a charge amount by power generation by engine output for the battery in a predetermined period;
Second charge amount detection means for detecting a charge amount by traveling regenerative power generation for the battery in a predetermined period;
A discharge amount display area in which an amount according to the discharge amount detected by the discharge amount detection means is displayed, and an amount according to the charge amount by power generation by the engine output detected by the first charge amount detection means. A display device having a first charge amount display area to be displayed and a second charge amount display area in which an amount corresponding to the charge amount by traveling regenerative power generation detected by the second charge amount detection means is displayed; ,
The discharge amount display area, the first charge amount display area, and the second charge amount display area each display a cumulative value of the discharge amount and the charge amount for each predetermined time in a predetermined period. . The display device for a hybrid vehicle according to claim 1 ,
The discharge amount display area, the first charge amount display area, and the second charge amount display area each display a cumulative value of the discharge amount and the charge amount for each predetermined time in a predetermined period. . In the display apparatus of the hybrid vehicle as described in any one of Claims 1-4 ,
A fuel consumption conversion means for converting the amount of charge generated by power generation by the engine output in a predetermined period into fuel consumption by the engine;
The display device for a hybrid vehicle, wherein the display device displays the fuel consumption amount converted by the fuel consumption conversion means. The display device for a hybrid vehicle according to claim 5 ,
Using the fuel consumption amount converted by the fuel consumption conversion means, further comprising a determination means for determining whether or not the operation in a predetermined period is a fuel consumption operation with good fuel consumption,
The display device for a hybrid vehicle, wherein the display unit displays a determination result by the determination unit. The display device for a hybrid vehicle according to claim 6 ,
A fuel saving amount conversion means for converting a charging amount by the traveling regenerative power generation in a predetermined period into a fuel saving amount when the same charging amount is generated by consuming fuel by the engine;
The display device for a hybrid vehicle, wherein the display unit displays the fuel saving amount converted by the fuel saving amount conversion means.

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