JP5961362B2 - Display device for hybrid vehicle - Google Patents

Description

  The present invention relates to a display device for a hybrid vehicle.

  In a hybrid vehicle that uses a motor and an engine as driving sources, a hybrid vehicle display device has been proposed that presents a driving force equivalent value by a motor and a driving force equivalent value by an engine to a driver (Patent Document 1).

JP 2007-314100 A

  FIG. 7 shows an example of display by a display device for a hybrid vehicle disclosed in Patent Document 1.

  In the display device 71 of the hybrid vehicle disclosed in Patent Document 1, the total power of the entire vehicle in which the tip of the instruction unit 73b is a combination of the motor power (driving force equivalent value) [kW] and the engine power [kW]. The scale position of (total driving force equivalent value) [kW] is indicated. On the dial 72, a bar graph 76 is provided. The bar graph 76 includes a region 76a corresponding to the motor power distribution ratio and a region 76b corresponding to the engine power distribution ratio across the position indicating the distribution ratio in a range between the scale zero and the long hand 73. Are displayed in an identifiable manner by making display colors different from each other. With the above configuration, the display device for a hybrid vehicle disclosed in Patent Document 1 presents the driver with a driving force equivalent value by a motor, a driving force equivalent value by an engine, and a total driving force equivalent value.

  However, in the display device for a hybrid vehicle disclosed in Patent Document 1, the driver can calculate the ratio of the driving force equivalent value of each driving source to the total driving force equivalent value (hereinafter referred to as the driving force ratio in this specification). In order to ascertain the “value” of the display device, the user who visually recognizes the display device reads the total driving force equivalent value and the driving force equivalent value of each driving source, and the user himself / herself It was necessary to calculate the ratio value. For this reason, it is difficult to instantly grasp the value of the driving force ratio.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a display device for a hybrid vehicle that can instantaneously grasp the value of the driving force ratio.

In order to achieve the above-described object, a display device for a hybrid vehicle according to the present invention is characterized by the following (1) .
(1) A display device for a hybrid vehicle having a motor and an engine as drive sources,
Based on the input signal from the input switch, the first driving that is the ratio of the driving force equivalent value of the motor to the total driving force equivalent value of the driving force equivalent value of the motor and the driving force equivalent value of the engine A force ratio value and a second driving force ratio value that is a ratio of the driving force equivalent value of the engine to the total driving force equivalent value, and a driving force equivalent value of the motor; A display unit having a display area for superimposing and outputting the driving force equivalent value by the engine ,
In the display area, a driving force scale and a bar are superimposed and output,
The driving force scale includes a first scale from 0 to 1 and a second scale from 0 to a predetermined value whose unit is power.
The bar indicates a part of the first scale, and indicates a current value of the driving force ratio selected from the first and second driving force ratios,
The display area includes a first area occupying a range from 0 to a first value of 0 or more in the second scale, and a first value from the first value in the second scale to a second value greater than or equal to the first value. A second region occupying a range is output in addition to the driving force scale and the bar,
The first and second areas are displayed so as to be distinguishable from each other,
The length occupied by the first area in the second scale indicates a current value of one of the driving force equivalent value by the motor and the driving force equivalent value by the engine, and the second area in the second scale is The occupied length indicates a current value of the other of the driving force equivalent value by the motor and the driving force equivalent value by the engine .

According to the hybrid vehicle display device having the configuration (1), the values of the first and second driving force ratios are selectively displayed based on the input signal from the input switch, and at the same time, the driving by each driving source The force equivalent value is displayed.

  According to the display device for a hybrid vehicle of the present invention, it is possible to provide a display device for a hybrid vehicle capable of instantaneously grasping the value of the driving force ratio.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a block diagram illustrating a hardware configuration example of a display device for a hybrid vehicle according to an embodiment. FIG. 2 is a flowchart showing a processing routine for displaying the driving force ratio. FIG. 3 is a diagram illustrating display contents of the liquid crystal display of the display device for a hybrid vehicle according to the embodiment. FIG. 4 is a diagram illustrating a display example on the fourth display area according to the first display method. FIG. 5 is a diagram illustrating a display example on the fourth display area by the second display method, and FIGS. 5A to 5C are diagrams illustrating examples of display at a certain temporary point. . FIG. 6 is a diagram illustrating a display example on the fourth display area according to the third display method, and FIGS. 6A to 6C are diagrams illustrating the display at a certain temporary point, respectively. . FIG. 7 is a diagram showing a display example by a conventional hybrid vehicle display device.

  Specific embodiments relating to the display device for a hybrid vehicle of the present invention will be described below with reference to the drawings.

The hybrid vehicle display device 100 of the present embodiment is mounted and used in a hybrid vehicle or the like that uses a motor and an engine as drive sources.
FIG. 1 shows an example of the hardware configuration of a display device 100 for a hybrid vehicle according to this embodiment.

  As shown in FIG. 1, a hybrid vehicle display device 100 includes a microcomputer (CPU: Central Processing Unit) 101, a read-only memory (EEPROM) 102, an interface 103, an interface 104, and a CPU power supply unit. 105, a graphic controller 106, a frame memory 107, an X driver 108, a Y driver 109, an LCD (Liquid Crystal Display) power supply unit 110, and a liquid crystal display (TFT-LCD: Thin Film Transistor Liquid Crystal Display) 111.

  The microcomputer 101 executes a program prepared in advance and performs various processes necessary for realizing the functions of the hybrid vehicle display device 100. For example, the microcomputer 101 performs the process shown in the flowchart of FIG.

  The read-only memory 102 holds the contents of programs executed by the microcomputer 101, fixed data prepared in advance, and the like.

  The interface 103 inputs a signal (IGN +) indicating the state of the ignition switch on the vehicle side to the microcomputer 101.

  The interface 104 is used for communication between the microcomputer 101 and various control devices (ECU: Electric Control Unit) on the vehicle side. Specifically, data representing various current vehicle states such as vehicle speed, engine rotation speed, cooling water temperature, and whether or not a clutch is connected is input to the microcomputer 101 from the vehicle side as almost real-time data. In addition, information regarding power consumption by the motor acquired by a motor (not shown) is input to the microcomputer 101 via the interface 104. Further, information regarding the fuel injection amount by the engine acquired by a fuel injection device (not shown) is input to the microcomputer 101 via the interface 104. Further, information on the remaining amount of fuel acquired by a fuel sensor (not shown) is input to the microcomputer 101 via the interface 104.

  The CPU power supply unit 105 inputs DC power supplied from the vehicle-side plus-side power supply line (+ B) and generates a DC voltage (Vcc) necessary for the operation of the microcomputer 101. Further, a reset signal is generated as necessary, and an operation for suppressing power supply is performed in accordance with a sleep signal output from the microcomputer 101.

  The liquid crystal display 111 has a color two-dimensional display screen in which a large number of minute display cells constituted by liquid crystal devices are arranged in the X direction and the Y direction. By individually controlling the display states of a large number of minute display cells for each cell, desired information such as graphics, characters, images, etc. can be displayed on the two-dimensional display screen.

The liquid crystal display 111 displays a graphic display screen as shown in FIG. 3 by two-dimensional screen display. The graphic display screen includes a first display area 31, a second display area 32, a third display area 33, and a fourth display area 34.
In the present embodiment, each display area is described as being displayed on a graphic display screen. However, a display area selected from each display area or all display areas may be analog.

  The first display area 31 is an area for displaying the current speed of the vehicle. On the first display area 31, a speed scale 35 and a pointer 36 are displayed. The pointer 36 indicates a part of the speed scale 35 to indicate the current vehicle speed.

  The second display area 32 is an area for displaying the current average fuel consumption. A fuel economy scale 37 and a bar 38 are displayed on the second display area 32. The bar 38 indicates a part of the fuel economy scale 37 to indicate the current average fuel economy.

  The third display area 33 is an area for displaying the current fuel remaining amount. On the third display area 33, the fuel scale 39 and the bar 40 are displayed. The bar 40 indicates a part of the fuel scale 39 to indicate the current remaining fuel amount.

  The fourth display area 34 is an area for displaying the driving force ratio. On the fourth display area 34, a driving force scale 41 and a bar 42 are displayed. The bar 42 indicates a part of the driving force scale 41 to indicate the current driving force ratio.

  The scanning position in the Y direction on the display screen of the liquid crystal display 111 is sequentially switched by the output of the Y driver 109. The Y driver 109 sequentially switches the scanning position in the Y direction in synchronization with the vertical synchronization signal output from the graphic controller 106.

  The X driver 108 sequentially switches the scanning position in the X direction on the display screen of the liquid crystal display 111 in synchronization with the horizontal synchronization signal output from the graphic controller 106. In addition, the X driver 108 gives RGB color image data output from the graphic controller 106 to the display cell at the scanning position to control the display contents on the screen.

  The graphic controller 106 displays various graphic elements on the screen of the liquid crystal display 111 according to various instructions input from the microcomputer 101. Actually, the microcomputer 101 or the graphic controller 106 writes the display data to the frame memory 107 that holds the display contents for each pixel and draws the graphic. In addition, a vertical synchronizing signal and a horizontal synchronizing signal for two-dimensionally scanning the screen of the liquid crystal display 111 are generated, and display data stored at a corresponding address on the frame memory 107 at a timing synchronized with these synchronizing signals. Is applied to the liquid crystal display 111.

  The LCD power supply unit 110 receives DC power supplied from the vehicle-side plus power supply line (+ B) and generates predetermined DC power required for display on the liquid crystal display 111.

Next, a specific operation of the hybrid vehicle display device 100 will be described.
FIG. 2 is a flowchart showing a processing routine for displaying the driving force ratio.

  First, the driver turns on the ignition switch. The microcomputer 101 supplied with the DC voltage (Vcc) outputs the fourth display area 34 on the graphic display screen. Then, the display of the driving force ratio is started.

  In step S <b> 21, the microcomputer 101 acquires the current fuel injection amount value A from the fuel injection device via the interface 104.

  In step S22, the microcomputer 101 calculates a driving force equivalent value B (power consumption) [kW] by the engine based on the fuel injection amount value A acquired in step S21.

In step S <b> 23, the microcomputer 101 obtains the current power consumption value C [kW] from the motor via the interface 104. The microcomputer 101 sets the power consumption value C acquired from the motor as a driving force equivalent value D (power consumption) [kW] by the motor.
In this specification, the routine for displaying the driving force ratio is in the order of step 21 to step 23, but the order can be changed as appropriate. For example, after obtaining the fuel injection amount value A and the power consumption value C at the same time, the driving force equivalent value B by the engine and the driving force equivalent value D by the motor may be calculated.

In step S24, the microcomputer 101 calculates a total driving force equivalent value E [kW], which is the sum of the driving force equivalent value B from the engine and the driving force equivalent value D from the motor, according to the following (Equation 1).
(Equation 1)
E = B + D

Further, in step S24, the microcomputer 101 calculates a driving force ratio F that is a ratio of the driving force equivalent value D by the motor to the total driving force equivalent value E according to the following (Equation 2).
(Equation 2)
F = D / E
In this specification, the ratio of the driving force equivalent value D by the motor to the total driving force equivalent value E is defined as the driving force ratio F, but the ratio of the driving force equivalent value B by the engine to the total driving force equivalent value E is shown. May be the driving force ratio F.

  In step S25, the microcomputer 101 outputs the driving force scale 41 and the bar 42 on the fourth display area 34 so that the display corresponds to the value of the driving force ratio F calculated in step S24. Details of the processing in step S25 will be described later.

  In step S26, the microcomputer 101 waits for an operation for ending the display of the driving force ratio F. Specifically, the microcomputer 101 repeats the process of step S21 again when the ignition switch is on. On the other hand, when the ignition switch is off and the DC voltage (Vcc) is not supplied, the output of the fourth display area 34 is stopped and the display of the driving force ratio F is ended.

  Below, the process of the microcomputer 101 in step S25 is demonstrated. In this specification, three embodiments using the first display method, the second display method, and the third display method as the display method of the driving force ratio F will be described. In the following, first, a first embodiment using the first display method will be described.

[First display method]
FIG. 4 is a diagram showing a display example on the fourth display area 34 by the first display method.
In FIG. 4, a driving force scale 41 indicating a value from 0 to 1 and a bar 42 are superimposed on the fourth display area 34 and output. The bar 42 indicates a part of the driving force scale 41 and indicates the current value of the driving force ratio F. In FIG. 4, the bar 42 indicates that the value of the driving force ratio F is 0.6.

  Reference numeral 43 corresponds to a region 43 from a position indicating 0 on the driving force scale 41 to a position indicated by the bar 42. Reference numeral 44 corresponds to a region 44 from the position indicated by the bar 42 on the driving force scale 41 to the position indicating 1. The region 43 and the region 44 are superimposed and output on the fourth display region 34 so that the display colors thereof are different from each other, and are displayed in an identifiable manner. In FIG. 4, the region 43 is indicated by horizontal stripes, and the region 44 is indicated by vertical stripes.

  As described above, in the first embodiment, the value of the driving force ratio F is output on the fourth display area 34. As a result, the current value of the driving force ratio F is shown to the driver. As a result, the hybrid vehicle display device according to the first embodiment can cause the driver to instantly grasp the current value of the driving force ratio.

  Further, in the first embodiment, the microcomputer 101 calculates the driving force equivalent value D by the motor based on the power consumption value C acquired from the motor as the unit of power, and the fuel acquired from the fuel injection device. Based on the value of the injection amount A, the driving force equivalent value B by the engine is calculated as the unit of electric power, and the driving force ratio F is calculated. Then, the driving force ratio F is output on the fourth display area in units of electric power. As a result, the value of the driving force ratio F is shown to the driver in units of electric power. As a result, the hybrid vehicle display device according to the first embodiment can cause the driver to instantly grasp the current value of the driving force ratio.

  In the first embodiment, the region 43 and the region 44 are displayed so as to be identifiable, and the bar 42 is displayed so as to be positioned at the boundary between the region 43 and the region 44. Thereby, the bar 42 is displayed so that its position can be easily grasped. As a result, the display device for a hybrid vehicle according to one embodiment can make the driver instantly grasp the current value of the driving force ratio.

  In the first embodiment, the area 43 and the area 44 are displayed so as to be distinguishable. Thereby, the area 43 and the area 44 are displayed so that their areas can be read. The area of the region 43 corresponds to the driving force equivalent value by the motor, and the area of the region 44 corresponds to the driving force equivalent value by the engine. As a result, by allowing the driver to visually recognize the region 43 and the region 44, the ratio of the driving force equivalent value by each driving source to the total driving force equivalent value can be instantaneously grasped.

[Second display method]
Next, a second embodiment using the second display method will be described. In the second display method, in addition to the display by the first display method, the driving force equivalent value B by the engine and the driving force equivalent value D by the motor are further displayed in the fourth display area 34. Fig.5 (a)-FIG.5 (c) are figures which show the example of a display of the 4th display area 34 by the 2nd display method.

  In FIGS. 5A to 5C, the driving force scale 41 and the bar 42 are superimposed and output on the fourth display area 34 as in the first display method. The driving force scale 41 has two scales having different units on the left and right. The left scale of the driving force scale 41 is the first axis, and the right scale is the second axis. The driving force scale 41 indicates a value from 0 to 1 by the first axis, and a value from 0 [kW] to 400 [kW] by the second axis. The bar 42 indicates a part of the driving force scale 41 on the first axis and indicates the current value of the driving force ratio F. 5 (a) to 5 (c), the bar 42 has a driving force ratio F value of 1 in FIG. 5 (a), 0.75 in FIG. 5 (b), and 0. 5 in FIG. 5 (c). 5 is shown.

  Reference numeral 45 corresponds to the area 45 for indicating the driving force equivalent value D by the motor, and reference numeral 46 corresponds to the area 46 for indicating the driving force equivalent value B by the engine. The region 45 occupies a region from a position indicating 0 on the second axis of the driving force scale 41 to a predetermined position, and indicates the value of the driving force equivalent value D by the motor according to the length occupying the second axis. Yes. The region 46 occupies a region on the second axis of the driving force scale 41 from the position indicating the driving force equivalent value D by the motor to a predetermined position. A region 46 indicates a driving force equivalent value B by the engine by a length occupying the second axis. The length that the region 45 and the region 46 occupy on the second axis indicates the total driving force equivalent value E. The region 43 and the region 44 are superimposed and output on the fourth display region 34 so that the display colors thereof are different from each other, and are displayed in an identifiable manner. 5A to 5C, the region 43 is indicated by horizontal stripes, and the region 44 is indicated by vertical stripes.

  In the second embodiment using the second display method, in step S <b> 25, the microcomputer 101 displays a region 45 and a region 46 on the fourth display region 34 in addition to the driving force scale 41 and the bar 42. Are superimposed and output. The region 45 is output so that the length of the driving force scale 41 on the second axis is the current driving force equivalent value D by the motor, and the region 46 has the length of the driving force scale 41 on the second axis. It is output so as to have a driving force equivalent value B by the engine.

  In FIG. 5A, a region 45 indicates that the driving force equivalent value D by the motor is 100 [kW] and the total driving force equivalent value is 100 [kW]. In FIG. 5B, in the region 45 and the region 46, the driving force equivalent value D by the motor is 150 [kW], the driving force equivalent value B by the engine is 50 [kW], and the total driving force equivalent value is It indicates 200 [kW]. In FIG. 5C, in the region 45 and the region 46, the driving force equivalent value D by the motor is 150 [kW], the driving force equivalent value B by the engine is 150 [kW], and the total driving force equivalent value is It shows that it is 300 [kW].

  As described above, in the second embodiment, the driving force equivalent value D by the motor and the driving force equivalent value B by the engine are superimposed and output on the fourth display area. Thus, simultaneously with the value of the driving force ratio F, the driving force equivalent value D by the motor and the driving force equivalent value B by the engine are shown to the driver. As a result, the hybrid vehicle display device according to the second embodiment can cause the driver to instantly grasp the current value of the driving force ratio and the value corresponding to the driving force of each driving source.

[Third display method]
Next, a third embodiment using the third display method will be described. In the second display method, the ratio of the driving force equivalent value D by the motor to the total driving force equivalent value E was displayed in the fourth display area 34. In the third display method, instead of this, The ratio of the driving force equivalent value B by the engine to the total driving force equivalent value E is displayed in the fourth display area 34. FIG. 6A to FIG. 6C are diagrams showing display examples of the fourth display region 34 by the third display method.

  6 (a) to 6 (c), the bar 42 indicates a part of the driving force scale 41 on the first axis, and the ratio of the driving force equivalent value B by the engine to the current total driving force equivalent value E. The value of is shown. 6 (a) to 6 (c), the bar 42 indicates that the ratio of the driving force equivalent value B by the engine to the total driving force equivalent value E is 0 in FIG. 6 (a) and FIG. 6 (b). Indicates 0.25, and FIG. 6C indicates 0.5. Since other configurations are the same as those in the second display method, description thereof is omitted.

  In the third embodiment, the microcomputer 101 switches the second display method and the third display method to the fourth display area 34 based on an input signal from an input switch (not shown). Determine the output of. More specifically, when the state of the input switch is the first state, the output to the fourth display area 34 is determined by the second display method, and the state of the input switch is the second state. In this case, the output to the fourth display area 34 is determined according to the third display method.

  As described above, in the third embodiment, the ratio of the driving force equivalent value B by the engine to the total driving force equivalent value E and the ratio of the driving force equivalent value D by the motor to the total driving force equivalent value E are as follows. , Selectively output on the fourth display area 34 based on the operation input. Thus, the ratio of the driving force equivalent value by each driving source to the total driving force equivalent value is selectively shown to the driver. As a result, the driver can appropriately select which driving source displays the ratio of the driving force equivalent value. Therefore, in the conventional display device for a hybrid vehicle, the display considering the driver's preference cannot be performed, whereas in the hybrid vehicle display device according to the present embodiment, the driver's preference is considered. Can be displayed.

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

  For example, in the embodiment of the present specification, the value of the driving force ratio is displayed by pointing a part of the driving force scale with a bar in the fourth display area. It is good also as a numerical display.

In the embodiment in the present specification, the regions 43 and 44 and the regions 45 and 46 are displayed so as to be identifiable by different display colors. However, these are displayed so as to be identifiable. Any configuration can be used. For example, even when displaying in the same color, if the patterns are different from each other, they are displayed in an identifiable manner.
Further, although the display colors of these areas are configured not to change during the routine for displaying the driving force equivalent value, the display colors may be changed according to the size of the display area of the areas. For example, if the display color becomes darker as the value increases, the driver can more instantly grasp the driving force equivalent value from each driving source.

  Further, in the embodiment in the present specification, the current fuel injection amount value is acquired from the fuel injection device, and the driving force equivalent value by the engine is calculated based on this value, but it is acquired from the fuel sensor. You may calculate based on the information regarding the amount of fuel reductions.

  In the embodiment of the present specification, the driving force of the motor and the engine is calculated in units of electric power. However, the driving force (output torque [Nm]) of the motor and the engine is calculated by other means. It may be calculated.

  Further, in the embodiment in the present specification, the display is performed using the ratio of the driving force equivalent value by each driving source to the total driving force equivalent value, but the value of the output ratio with respect to the maximum output of each driving source. It is good also as a structure which displays using. That is, the maximum driving force equivalent value is calculated from the maximum output value of each driving source, and the ratio of the driving force equivalent value by each driving source to the maximum driving force equivalent value is calculated and displayed using this ratio value. It is good also as composition which performs.

DESCRIPTION OF SYMBOLS 100 Hybrid vehicle display apparatus 101 Microcomputer 102 Read-only memory 103,104 Interface 105 CPU power supply part 106 Graphic controller 107 Frame memory 108 X driver 109 Y driver 110 LCD power supply part 111 Liquid crystal display 31 1st display area 32 2nd Display area 33 Third display area 34 Fourth display area 35 Speed scale 36 Pointer 37 Fuel economy scale 38 Bar 39 Fuel scale 40 Bar 41 Driving force scale 42 Bar 43 The value corresponding to the driving force by the motor in the first display method is displayed. Area 44 corresponding to the ratio Area 45 corresponding to the ratio of the driving force equivalent value by the engine in the first display method Area 46 corresponding to the value of the driving force equivalent value by the motor in the second display method and the third display method First Area corresponding to the value of the driving force equivalent value by the engine in the display method and the third display method

Claims (1)

A display device for a hybrid vehicle having a motor and an engine as drive sources,
Based on the input signal from the input switch, the first driving that is the ratio of the driving force equivalent value by the motor to the total driving force equivalent value that is the sum of the driving force equivalent value by the motor and the driving force equivalent value by the engine A force ratio value and a second driving force ratio value that is a ratio of the driving force equivalent value of the engine to the total driving force equivalent value, and a driving force equivalent value of the motor; A display unit having a display area for superimposing and outputting the driving force equivalent value by the engine ,
In the display area, a driving force scale and a bar are superimposed and output,
The driving force scale includes a first scale from 0 to 1 and a second scale from 0 to a predetermined value whose unit is power.
The bar indicates a part of the first scale, and indicates a current value of the driving force ratio selected from the first and second driving force ratios,
The display area includes a first area occupying a range from 0 to a first value of 0 or more in the second scale, and a first value from the first value in the second scale to a second value greater than or equal to the first value. A second region occupying a range is output in addition to the driving force scale and the bar,
The first and second areas are displayed so as to be distinguishable from each other,
The length occupied by the first area in the second scale indicates a current value of one of the driving force equivalent value by the motor and the driving force equivalent value by the engine, and the second area in the second scale is The hybrid vehicle display device characterized in that the occupied length indicates the other current value of the driving force equivalent value by the motor and the driving force equivalent value by the engine .

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