JPH0998505A - Display for travelable distance of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a travelable distance of a vehicle correctly by computing the travelable distance of the vehicle by least square, on the basis of mutually corresponding values detected by a travel distance detecting means and a residual energy quantity detecting means. SOLUTION: A detected travelling distance value detected by a travelling distance detecting means 22 and a residual signal energy quantity value detected by a residual capacity detecting means 21 are fetched into a first storage means 13A inside a travelable distance display controlling part 11 at every required period, and are stored in a mutually corresponding state. A real output value of a motor detected by a motor real output detecting means 24 and a residual energy quantity value detected by the residual capacity detecting means 21 are fetched into a second storage means 13B at every required period, and are stored in a mutually corresponding state. The travel distance computing means 15A of a computing means 15 computes the travelable distance of a vehicle, on the basis of a plurality of sets of data stored in the first storage means 13A. For this operation, a linear approximate equation of least square is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle travelable distance display device suitable for use by a driver in order to make it easier for a driver to understand the state of charge of a battery in an electric vehicle and the state of fuel remaining in an internal combustion engine type vehicle. Regarding

[0002]

2. Description of the Related Art At present, an internal combustion engine type vehicle equipped with a gasoline engine, a diesel engine or the like is mainly used as an automobile, but an electric vehicle is also attracting attention from the viewpoint of preventing air pollution and reducing noise caused by the vehicle. In the case of the internal combustion engine type vehicle, the fuel becomes the running energy, and in the electric vehicle, the electricity charged in the battery becomes the running energy.

The remaining amount of such running energy (ie,
If the driver does not fully recognize the remaining amount of fuel and the remaining capacity of the battery, energy supply (that is, refueling and charging of the battery) cannot be properly performed. Therefore, a normal vehicle is equipped with a fuel meter and a battery remaining capacity meter, and the driver selects the time to refuel or charge the battery while observing such a meter. , How much the vehicle can travel with the remaining amount of running energy (fuel remaining amount and battery remaining capacity), that is, the remaining travel energy is displayed by the driver by displaying the travelable distance of the vehicle. The technology to make them grasp is also being developed.

In order to display such a travelable distance,
Of course, it is necessary to estimate the travelable distance.
In the conventional estimation of the mileage, for example, in the case of an internal combustion engine type vehicle, the fuel consumption rate or the mileage per unit consumption amount of fuel is disclosed as disclosed in Japanese Utility Model Laid-Open No. 5-84828. Based on a differential value (difference value) of (= traveling distance / unit consumption of fuel), the travelable distance until the remaining fuel amount at that time becomes empty is calculated.

When such an estimation is applied to an electric vehicle, a differential value (difference value) of a power consumption rate of a battery or a travel distance per unit discharge amount of the battery (= travel distance / unit discharge amount of the battery). Based on the above, it is conceivable to calculate the travelable distance until the battery capacity at that time reaches a level at which travel is impossible.

[0006]

However, as described above, when the travelable distance is estimated by the calculation based on the differential value such as the consumption rate of the onboard energy, the travelable distance is displayed when the travel state suddenly changes depending on the traffic condition. May change suddenly in a short time. For example, on a congested road, the traveled distance per unit energy consumption becomes short, so the travelable distance also becomes short, and on a suburban road where there is no traffic jam, the traveled distance per unit energy consumption becomes long, so the travelable distance also becomes long.

[0007] Therefore, when the user gets out of a traffic jam, the traveling distance may suddenly increase,
When the estimated travelable distance is displayed in this way, the driver may be confused. The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle travelable distance display device capable of more accurately estimating the travelable distance and displaying the correct travelable distance. .

[0008]

Therefore, a vehicle travelable distance display device according to a first aspect of the present invention comprises an energy storage means mounted on the vehicle for storing traveling energy.
A drive output generating means for driving the drive wheels of the vehicle while using the traveling energy to drive the vehicle, and an instruction output generated by the drive output generating means based on an operation through the operating means are calculated. A controller for controlling the supply of the traveling energy from the energy storage means to the drive output generating means based on the instruction output, and at least a traveling distance detecting means for detecting a traveling distance of the vehicle,
The vehicle state detecting means having a remaining energy amount detecting means for detecting the remaining amount of the traveling energy stored in the energy storing means, and the traveling distance detecting means and the remaining energy amount detecting means simultaneously or substantially. First storage means for storing a plurality of sets of corresponding traveling distance detection values and remaining energy amount detection values detected at the same time, and traveling of the vehicle based on a plurality of sets of storage data stored in the first storage means It is characterized by comprising a travelable distance calculating means for calculating the distance using the least squares method and a display means for displaying the travelable distance calculated by the travelable distance calculating means.

According to a second aspect of the present invention, there is provided a travelable distance display device for a vehicle according to the first aspect, wherein the first storage means stores the traveled distance detection value and the residual energy amount detection value corresponding to each other. Is characterized in that a plurality of sets are stored periodically every predetermined time. A vehicle travelable distance display device according to a third aspect of the present invention is the device according to the second aspect, wherein the first storage means stores the above at a shorter cycle when the device is started. There is.

According to a fourth aspect of the present invention, there is provided a travelable distance display device for a vehicle according to the first aspect, wherein the travelable distance computing means is used until the remaining energy amount reaches a first set value. It is characterized in that the travelable distance of the vehicle is calculated. According to a fifth aspect of the present invention, there is provided the vehicle travelable distance display device according to the fourth aspect, wherein the vehicle state detecting means includes an actual output detecting means for detecting an actual output generated by the drive output generating means. In the case where the ratio of the actual output to the instruction output is less than or equal to the second set value, the actual output detection values corresponding to each other detected simultaneously or substantially simultaneously by the actual output detection means and the remaining energy amount detection means. And second storage means for storing a plurality of remaining energy amount detection values, and the actual output generated by the drive output generation means based on the storage data stored in the second storage means is equal to or less than a preset lower limit value. The effective residual energy amount calculating means for estimating the residual energy amount by the calculation, and the residual energy amount calculated by the effective residual energy amount calculating means is used as the first set value. It is characterized by being composed.

According to a sixth aspect of the present invention, there is provided a vehicle travelable distance display device according to the fifth aspect, wherein the second storage means has the actual output detection value and the residual energy amount detection value corresponding to each other. Is stored periodically at predetermined time intervals, and the effective residual energy amount calculation means calculates the residual energy amount by using the least square method.

According to a seventh aspect of the present invention, there is provided a vehicle travelable distance display device according to any one of the first to sixth aspects, wherein the energy storage means is a battery and the drive output generation means is It is characterized by being an electric motor.
According to another aspect of the present invention, there is provided a vehicle travelable distance display device, a fuel tank mounted on a vehicle for storing fuel, and a drive wheel of the vehicle while using the fuel for traveling the vehicle. An engine, a controller that calculates an instruction output to be generated by the engine based on an operation through the operation unit, and controls the supply of the fuel from the tank to the engine based on the instruction output, and at least the vehicle. The traveling distance detecting means for detecting the traveling distance, the remaining fuel amount detecting means for detecting the remaining amount of the fuel stored in the tank, the traveling distance detecting means and the remaining fuel amount detecting means simultaneously or Storage means for storing a plurality of sets of corresponding traveling distance detection values and remaining fuel amount detection values detected substantially at the same time, and traveling of the vehicle based on the plurality of sets of stored data stored in the storage means. A travel distance calculating means for calculating using the least squares method the distance, is characterized in that it includes a display means for displaying the travelable distance computed by said travel distance computing means.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a vehicle travelable distance display device as an embodiment of the present invention. Is a configuration diagram thereof, FIG. 2 is a diagram illustrating the motor instruction output thereof, FIG. 3 is a diagram illustrating calculation of the travelable distance thereof, FIG. 4 is a diagram illustrating calculation of the effective remaining capacity thereof, and FIG.
Is a flowchart explaining the calculation of the travelable distance,
FIG. 6 is a flow chart for explaining the calculation of the effective remaining capacity.

The vehicle travelable distance display device of this embodiment is mounted on an electric vehicle as shown in FIG.
In FIG. 1, reference numeral 1 denotes an on-vehicle battery as an on-vehicle energy storage means for storing traveling energy,
This battery 1 can be repeatedly charged by an external charger not equipped in the vehicle. Reference numeral 2 is an electric motor (traveling motor) as a drive output generating means that is supplied with electric power (that is, traveling energy) from the battery 1, and drive wheels 4 are connected to an output shaft of the motor 2 via a transmission 3. It is designed to be driven.

A power conversion circuit 5 is provided between the battery 1 and the motor 2, and the power from the battery 1 is supplied to the motor 2 after being adjusted to a required size through the power conversion circuit 5. It has become so. The power conversion circuit 5 is controlled by the motor controller 6. In this motor controller 6, when the accelerator pedal 7 as an operating means is depressed,
An instruction output to be generated in the motor 2 is calculated based on an operation through the accelerator pedal (operating means) 7, and the supply of electric power (energy for traveling) from the battery 1 to the motor 2 is controlled based on the instruction output. That is, the output of the motor 2 is controlled through the power conversion circuit 5 according to the depression amount of the accelerator pedal 7. On the other hand, when the accelerator pedal 7 is not depressed, the regeneration amount of the motor 2 is controlled through the power conversion circuit 5 according to the depression amount of the brake pedal 8.

In the battery 1, the remaining capacity detecting means (remaining energy amount detecting means) for detecting the ratio (charging rate) of the electric power capacity remaining in the battery 1 to the full charge amount.
21 is attached. This remaining capacity detecting means 21 is
It is a well-known device configured to calculate based on the history of charge / discharge of the battery from the fully charged state. The travelable distance display device of the present vehicle is provided in such an electric vehicle, and as shown in FIG. 1, the travelable distance display control unit 11 that estimates the travelable distance and controls the display of the travelable distance.
And a display unit 12 that displays the travelable distance based on an instruction from the travelable distance display control unit 11.

The travelable distance display control unit 11 has a function (storage unit) 13 for storing various data, a function (determination unit) 14 for making a necessary judgment, a function (calculation unit) 15 for making a necessary calculation, and an estimation. A function (instructing means) 16 for sending an instruction signal to the display section 12 based on the traveled distance is provided, and the travelable distance display control section 11 has a vehicle state detecting means 20, that is, travel distance detection. Means 2
2, remaining capacity detecting means (remaining energy amount detecting means) 2
1, detection signals from the motor instruction output detection means 23 and the motor actual output detection means 24 are input.

The traveling distance detecting means 22 is a known means for calculating the traveling distance of the vehicle while accumulating the number of revolutions of the output shaft of the transmission, and the motor instruction output detecting means 23 is a motor controller 6 for the accelerator pedal. It can be detected from the instruction output of the motor calculated based on the operation through the (operation means) 7, or based on the operation amount situation of the accelerator pedal (operation means) 7. Further, the actual motor output detection means 24 determines the power conversion circuit 5 from the relationship between the current supplied to the motor 2 and the actual motor output as shown in FIG.
Can be detected based on the current supplied to the motor 2 and the like, which is adjusted through.

The storage means 13 in the travelable distance display control section 11 is provided with a first storage means 13A and a second storage means 13B. In the first storage means 13A,
The traveled distance detection value (traveling distance data) detected by the traveled distance detecting means 22 and the remaining energy amount detection value (battery remaining capacity data) detected by the remaining capacity detecting means 21 are taken in every required cycle. And are stored in a corresponding state (as a set). This first storage means 13A
The sampling data stored in is stored so as to be accumulated every required period, and after the required number of data (the limit number n of memory data) has been stored, the oldest data is erased and the latest data is added. While updating, the data is updated.
In addition, hereinafter, a plurality (n pieces) of sampling data stored in the first storage unit 13A will be referred to as D1, D2, D3 ,.
···, Dn.

In the second storage means 13B, the actual motor output detection value (motor output data) detected by the actual motor output detection means 24 and the remaining energy amount detection value (battery remaining) detected by the remaining capacity detection means 21 are stored. (Capacity data) is also taken in every required cycle and stored in a mutually corresponding state (as a set). However, here, the value of the ratio between the actual output of the motor 2 and the instruction output (actual output / instruction output) is preset based on the detection signals from the motor instruction output detection means 23 and the motor actual output detection means 24. The sampling data is stored only when the value of the actual output / instruction output is equal to or smaller than the determination value d as compared with the determined determination value d (d <1). Further, the sampling data stored in the second storage means 13B is also stored so as to be accumulated every required period, and when the required number of data (the limit number n of memory data) is stored, the oldest data thereafter. Is erased and the data is updated while adding the latest data. The plurality of (n) sampling data stored in the second storage unit 13B are represented as DD1, DD2, DD3, ..., DDn.

The judging means 14 judges whether to set the sampling period or whether to start the calculation based on the sampling data. That is, in the present embodiment, immediately after the ignition key (IG key) is turned on (elapsed time after the IG key is turned on ≦ a, where a is a preset time), the cycle of storing the above sampling data ( (Sampling time) is set to be short so that the calculation and display described later can be performed quickly after the IG key is turned on, and if the ignition key (IG key) is turned on for a sufficient time (IG The elapsed time after key-on> a), the sampling time is set to be long to suppress the calculation frequency and increase the calculation accuracy. Also,
The start of the calculation is determined by whether or not the sampling data has reached the required amount.

The calculation means 15 includes a travelable distance calculation means 15A for calculating a travelable distance of the vehicle, and an effective remaining energy amount for calculating an effective remaining capacity (effective remaining energy amount) of a battery used for this travelable distance calculation. Computing means 15
B can be provided. The travelable distance calculating means 15A is
The travelable distance of the vehicle is calculated based on a plurality of sets of stored data (sampling data) stored in the first storage means 13A. For this calculation, a least-squares method linear approximation is used.

That is, as shown in FIG. 3, a plurality of sets of sampling data D1, stored in the first storage means 13A.
Based on D2, D3, ..., Dn, the consumption characteristic of the battery as shown by the straight line A can be estimated by the linear approximation of the least squares method. In the case of an electric vehicle, the level at which the remaining capacity of the battery 1 causes the output of the motor 2 to decrease [this is the effective remaining capacity of the battery (effective remaining energy amount)] b
It is possible to obtain the travelable distance ΔL until the vehicle travels to the lower limit from the characteristic indicated by the straight line A. Driving distance calculation means 1
In 5A, the travelable distance ΔL is calculated in this way. It should be noted that a quadratic approximation of the least squares method may be considered for the travelable distance ΔL.

The effective remaining capacity (effective remaining energy amount) b of the battery is calculated by the effective remaining energy amount calculating means 15B. This calculation will be described. In the effective residual energy amount calculation means 15B, the motor 2
Motor output data when the ratio value (actual output / instruction output) between the actual output and the instruction output becomes less than a preset determination value d (d <1) (that is, when the motor output is insufficient). , Remaining battery capacity data sampling data D
Based on D1, DD2, DD3, ..., DDn, a curve B is obtained by the quadratic approximation of the least square method as shown in FIG.
It is possible to estimate the motor output reduction characteristic as shown in. Then, it is possible to calculate the effective remaining capacity (effective remaining energy amount) b of the battery corresponding to a preset lower limit value of the motor output (a level at which traveling is hindered by insufficient output of the motor) e. In the effective residual energy amount calculation means 15B,
In this way, the effective remaining capacity (effective remaining energy amount) b of the battery is calculated.

Since the vehicle travelable distance display device according to the first embodiment of the present invention is configured as described above, the travelable distance ΔL is calculated and displayed as shown in FIG. 4, for example. Be done. That is, as shown in FIG. 4, first, it is determined whether or not a required time has elapsed since the ignition key (IG key) was turned on (whether or not the elapsed time after the IG key was turned on ≦ a) (step A10). ),
From the time the ignition key is turned on until the required time a elapses, the sump link time is set short (step A30), and after the required time a elapses after the ignition key is turned on, the sump link time is set. Is set to be long (step A20).

Based on the sampling time thus set, it is judged whether or not the elapsed time reaches the sampling time (step A40), and when the elapsed time reaches the sampling time (that is, at the sampling time cycle). ), Sampling data, that is, the traveling distance detecting means 2
The data Dk including the traveling distance detection value (traveling distance data) detected in 2 and the remaining energy amount detection value (battery remaining capacity data) detected by the remaining capacity detecting means 21 is taken in. Then, after the number of data is stored up to the limit number n of memory data, the sampling data is updated (step A50).

Then, if a sufficient number of sampling data is obtained through the judgment (step A60) as to whether or not the number of sampling data has reached the number that allows the linear equation approximation of the least squares method, a plurality of sets of sampling data are sampled. Data D1, D
2, D3, ..., the battery consumption characteristics as shown by the straight line A (see FIG. 3) are estimated by linear approximation of the least squares method, and the remaining capacity of the battery is calculated as the effective remaining capacity (effective remaining capacity). The travelable distance ΔL until the energy amount b is decreased is calculated (step A70). Then, the elapsed time is reset to 0 (step A80), and the calculated travelable distance ΔL is displayed on the display unit 12 (step A80).
90).

The above-mentioned effective remaining capacity (effective remaining energy amount) b can be set as shown in FIG. 6, for example. That is, first, it is determined whether or not the first calculation of the effective remaining capacity b has been performed (step B10),
If the first calculation of the effective remaining capacity b has been performed, this calculated value is used, and if not yet, the effective remaining capacity b immediately before the previous ignition key is turned off is used (step B20).

Then, if the first calculation is performed, it is judged whether or not the elapsed time has reached the sampling set time c (step B30), and when the elapsed time reaches the sampling set time c, It is determined whether or not the value of the ratio between the actual output of the motor 2 and the instruction output (actual output / instruction output) is less than a preset determination value d (d <1) (step B
40).

Here, (actual output / instruction output) is the judgment value d.
When it is less than the above, the sampling data, that is, the actual motor output detection value (motor output data) detected by the actual motor output detection means 24 and the remaining energy amount detection value (battery detection value detected by the remaining capacity detection means 21 DDk consisting of the remaining capacity data) and the data number is stored up to the limit number n of the memory data, and then the sampling data is updated (step B50).

Then, as shown in FIG. 4, the motor output lowering characteristic as shown by the curve B is estimated by the quadratic approximation of the least squares method, and the battery corresponding to the preset lower limit value e of the motor output is set. The effective remaining capacity (effective remaining energy amount) b of is calculated (step B60). Further, the elapsed time is reset to 0 (step 760) and the current calculation is finished.

The effective remaining capacity (effective remaining energy amount) b thus obtained is used in the calculation of the travelable distance ΔL. In this way, by using the least-squares method to estimate the travelable distance ΔL, it becomes possible to obtain a highly accurate travelable distance ΔL without variations, and for example, when traffic conditions change. Even if the driving state changes suddenly, the display of the possible driving distance does not change suddenly in a short time, the driver can grasp the state of the remaining fuel without anxiety, and the driving energy (battery remaining The driver can more easily manage the capacity.

Also, regarding the effective remaining capacity (effective remaining energy amount) b used for the estimation calculation of the travelable distance ΔL,
A more appropriate estimation can be performed by using the least squares method. Furthermore, in the case of a series type hybrid electric vehicle equipped with a generator, since power is generally generated at a constant charging efficiency, it depends on the energy (that is, the amount of remaining fuel) provided for the prime mover that drives the generator. hand,
Since it is considered that the remaining capacity of the battery will increase, the increase amount of the remaining capacity of the battery with respect to the remaining fuel amount can be estimated. Therefore, if the amount of remaining fuel is detected, the amount of increase in the remaining capacity of the battery can be obtained according to this detected value, and the amount of increase thus obtained is added to the above-mentioned remaining capacity of the battery, and this added value is added. Based on this, it is conceivable to perform the estimation calculation of the travelable distance ΔL.

Next, a second embodiment of the present invention will be described. FIGS. 7 and 8 show a vehicle travelable distance display device as a second embodiment of the present invention, and FIG. , 8 is a diagram for explaining the calculation of the travelable distance. The vehicle travelable distance display device according to the present embodiment is mounted on a vehicle having an internal combustion engine. As shown in FIG. 7, the travelable distance is estimated and the travelable distance is displayed, as in the first embodiment. Travelable distance display control unit 11 for controlling the
The display unit 12 displays a travelable distance based on an instruction from the travelable distance display control unit 11.

The travelable distance display control unit 11 has a function (storage unit) 13 for storing various data, a function (determination unit) 14 for making a necessary judgment, a function (calculation unit) 15 for making a necessary calculation, and an estimation. A function (instructing means) 16 for sending an instruction signal to the display section 12 based on the traveled distance is provided, and the travelable distance display control section 11 has a vehicle state detecting means 20, that is, travel distance detection. Means 2
2, residual fuel amount detecting means (remaining energy amount detecting means) 2
Each detection signal from 5 is input. Storage means 13, determination means 14, calculation means 15, instruction means 1
6 has some or all of the same functions as in the first embodiment.

Further, in the present embodiment, since the vehicle is an internal combustion engine type vehicle, fuel is stored as running energy in a fuel tank (not shown) as energy storage means. Amount (remaining fuel amount)
Since the vehicle can be driven until 0 or almost 0, as shown in FIG. 8, the mileage at the time when the remaining fuel amount becomes 0 or substantially 0 is set as the travelable distance ΔL.

Since the vehicle travelable distance display device according to the second embodiment of the present invention is constructed as described above, the travelable distance ΔL can be displayed as shown in FIG. 4 relating to the first embodiment, for example. Calculation and display are performed. That is, as shown in FIG. 4, first, it is determined whether or not a required time has elapsed since the ignition key (IG key) was turned on (whether or not the elapsed time after the IG key was turned on ≦ a) (step A10). ), Until the required time a elapses after the ignition key is turned on, the sump link time is set to be short (step A30), and after the required time a has elapsed since the ignition key was turned on, The link time is set long (step A20).

Based on the sampling time set in this way, it is judged whether or not the elapsed time has reached the sampling time (step A40), and when the elapsed time reaches the sampling time (that is, at the sampling time cycle). ), Sampling data, that is, the traveling distance detecting means 2
The data Dk including the traveling distance detection value (traveling distance data) detected in 2 and the remaining energy amount detection value (remaining fuel amount data) detected by the remaining capacity detecting means 21 is taken in. Then, after the number of data is stored up to the limit number n of memory data, the sampling data is updated (step A50).

When a sufficient number of sampling data is obtained through the determination (step A60) as to whether or not the number of sampling data has reached a number that allows the linear approximation of the least-squares method, a plurality of sampling sets are sampled. Data D1, D
2, D3, ..., the fuel consumption characteristic as shown by the straight line A (see FIG. 8) is estimated by the linear approximation of the least squares method until the remaining fuel amount decreases to 0 or almost 0. The travelable distance ΔL is calculated (step A70). Then, the elapsed time is reset to 0 (step A80),
The calculated travelable distance ΔL is displayed on the display unit 12 (step A90).

In this way, using the method of least squares,
By performing the estimation calculation of the travelable distance ΔL, it becomes possible to obtain an extremely accurate travelable distance ΔL even in an internal combustion engine type vehicle, even when the traveling state suddenly changes depending on traffic conditions. The display of the mileage does not change suddenly in a short time, the driver can grasp the state of the remaining fuel without anxiety, and the driver can easily manage the energy for running (the remaining capacity of the battery). become.

[0041]

As described in detail above, according to the travelable distance display device for a vehicle of the present invention as set forth in claim 1, an energy storage means mounted on the vehicle for storing traveling energy is provided. The drive output generating means for driving the drive wheels of the vehicle while using the traveling energy to drive the vehicle, and the instruction output generated by the drive output generating means based on the operation through the operating means are calculated, and the instruction output is calculated. A controller that controls the supply of the traveling energy from the energy storage means to the drive output generation means based on the output, at least a travel distance detection means that detects the travel distance of the vehicle, and a storage in the energy storage means. Vehicle state detecting means having residual energy amount detecting means for detecting the remaining amount of running energy, running distance detecting means and residual energy amount detecting means First storage means for storing a plurality of sets of corresponding traveling distance detection values and remaining energy amount detection values detected simultaneously or substantially simultaneously, and the vehicle based on a plurality of sets of storage data stored in the first storage means. The travelable distance is calculated by using the least squares method, and the displayable means for displaying the travelable distance calculated by the travelable distance calculating means is provided. It can be accurately estimated without causing variations.

According to the traveling distance display device for a vehicle of the present invention described in claim 2, in the device according to claim 1, the first storage means stores the detected traveling distance and the remaining energy amount corresponding to each other. With the configuration in which a plurality of detection values are periodically stored at predetermined time intervals, proper data collection can be performed, which contributes to improvement of the estimation accuracy of the travelable distance. According to the travelable distance display device for a vehicle of the present invention as set forth in claim 3, in the device as set forth in claim 1, the travelable distance calculation means sets the remaining energy amount until the residual energy amount reaches the first set value. With the configuration that calculates the travelable distance of the vehicle,
A more effective travelable distance can be calculated according to the setting of the first set value, and a more practical travelable distance can be displayed.

According to the traveling distance display device for a vehicle of the present invention as set forth in claim 3, in the device as claimed in claim 2, the first storage means stores the storage at a shorter cycle when the device is started. With this configuration, the travelable distance can be quickly calculated and displayed when the device is started. According to the vehicle travelable distance display device of the present invention as set forth in claim 4, in the device as set forth in claim 3, the vehicle state detection means detects an actual output generated by the drive output generation means. Means, and when the ratio of the actual output to the instruction output is less than or equal to a second set value, the actual outputs corresponding to each other detected simultaneously or substantially simultaneously by the actual output detection means and the remaining energy amount detection means. Second storage means for storing a plurality of detection values and remaining energy amount detection values;
An effective residual energy amount calculating means for estimating the residual energy amount by which the actual output generated by the drive output generating means becomes equal to or less than a preset lower limit value based on the stored data stored in the second storage means; And the effective remaining energy amount calculated by the effective remaining energy amount calculating means is used as the first set value, an effective travelable distance can be calculated, and It is possible to display a practical travelable distance.

According to a travelable distance display device for a vehicle of the present invention as described in claim 5, in the device as claimed in claim 4, the second storage means stores the actual output detection value and the residual energy amount corresponding to each other. A plurality of sets of detected values are periodically stored at predetermined time intervals, and the effective remaining energy amount calculating means is
With the configuration in which the residual energy amount is calculated using the least squares method, the effective residual energy amount can be accurately calculated.

According to another aspect of the present invention, there is provided a vehicle travelable distance display device according to any one of the first to fifth aspects, wherein the energy storage means is a battery, and the drive output is generated. With the configuration in which the means is an electric motor, it is possible to accurately display the travelable distance in the electric vehicle, and it becomes easy for the driver to manage the charging of the battery and the like.

According to the traveling distance display device for a vehicle of the present invention, the fuel tank mounted on the vehicle for storing the fuel and the vehicle while using the fuel for traveling the vehicle. An engine that drives the drive wheels of the engine, and a controller that calculates an instruction output to be generated in the engine based on an operation through the operation means and controls the supply of the fuel from the tank to the engine based on the instruction output. ,
At least a traveling distance detecting means for detecting a traveling distance of the vehicle, a fuel remaining amount detecting means for detecting a remaining amount of the fuel stored in the tank, the traveling distance detecting means and the fuel remaining amount detecting means. Storage means for storing a plurality of sets of corresponding traveling distance detection values and remaining fuel amount detection values detected at the same time or at substantially the same time, and the traveling of the vehicle based on the plurality of sets of storage data stored in the storage means. A travelable distance calculation means for calculating the travelable distance using the least squares method and a display means for displaying the travelable distance calculated by the travelable distance calculation means are provided to enable traveling in an internal combustion engine type automobile. The distance can be accurately displayed, and the driver can easily manage the fuel supply and the like.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a vehicle travelable distance display device as a first embodiment of the present invention.

FIG. 2 is a diagram illustrating motor instruction output of the vehicle travelable distance display device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating calculation of a travelable distance of a travelable distance display device for a vehicle according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining calculation of an effective remaining capacity according to a travelable distance of a travelable distance display device for a vehicle according to the first embodiment of the present invention.

FIG. 5 is a flowchart for explaining calculation of a travelable distance of a travelable distance display device for a vehicle according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating a calculation of an effective remaining capacity according to a travelable distance of a travelable distance display device for a vehicle according to the first embodiment of the present invention.

FIG. 7 is a configuration diagram showing a vehicle travelable distance display device according to a second embodiment of the present invention.

FIG. 8 is a diagram illustrating calculation of a travelable distance of a travelable distance display device for a vehicle according to a second embodiment of the present invention.

[Explanation of symbols]

 1 In-vehicle battery as energy storage means 2 Electric motor (running motor) as drive output generation means 3 Transmission 4 Drive wheels 5 Power conversion circuit 6 Motor controller 7 Accelerator pedal 8 Brake pedal 11 Travelable distance display control unit 12 Display unit 13 storage means 14 determination means 15 calculation means 16 instruction means 20 vehicle state detection means 21 remaining capacity detection means (remaining energy amount detection means) 22 mileage detection means 23 motor instruction output detection means 24 motor actual output detection means 25 remaining fuel amount Detection means (remaining energy amount detection means)

Claims (8)

[Claims] 1. An energy storage means mounted on a vehicle for storing traveling energy, and a drive output generating means for driving drive wheels of the vehicle while using the traveling energy for traveling the vehicle. A controller that calculates an instruction output to be generated by the drive output generation means based on an operation through the operation means, and controls the supply of the traveling energy from the energy storage means to the drive output generation means based on the instruction output. And a vehicle state detecting means having at least a traveling distance detecting means for detecting a traveling distance of the vehicle and a residual energy amount detecting means for detecting a residual amount of the traveling energy stored in the energy storage means. A traveling distance detection value and a residual energy amount corresponding to each other, which are detected simultaneously or substantially simultaneously by the traveling distance detecting means and the residual energy amount detecting means. First storage means for storing a plurality of sets of output values, and travelable distance calculation means for calculating a travelable distance of the vehicle using the least square method based on a plurality of sets of stored data stored in the first storage means And a display means for displaying the travelable distance calculated by the travelable distance calculation means, a travelable distance display device for a vehicle. 2. The first storage means stores a plurality of sets of the traveled distance detection value and the remaining energy amount detection value corresponding to each other periodically at a predetermined time interval. Displayable distance display device for vehicles. 3. The first storage means, when starting the device,
Characterized by performing the above-mentioned storage in a shorter cycle,
The travelable distance display device for a vehicle according to claim 2. 4. The travel distance of the vehicle according to claim 1, wherein the travelable distance calculation means calculates the travelable distance of the vehicle before the remaining energy amount reaches the first set value. Possible distance display device. 5. The vehicle state detecting means includes an actual output detecting means for detecting an actual output generated by the drive output generating means, and a ratio of the actual output to the instruction output is equal to or less than a second set value. Second storage means for storing a plurality of sets of corresponding actual output detection values and remaining energy amount detection values detected by the actual output detection means and the remaining energy amount detection means at the same time or substantially at the same time. And an effective residual energy amount calculating means for estimating the residual energy amount that the actual output generated by the drive output generating means becomes equal to or less than a preset lower limit value based on the stored data stored in the storing means, The vehicle travelable distance according to claim 4, wherein the remaining energy amount calculated by the effective remaining energy amount calculation means is used as the first set value. Display device. 6. The second storage means stores a plurality of sets of the actual output detection value and the residual energy amount detection value corresponding to each other periodically at a predetermined time interval, and the effective residual energy amount computing means, The travelable distance display device for a vehicle according to claim 5, wherein the residual energy amount is calculated by using the least squares method. 7. The energy storage means is a battery, and the drive output generation means is an electric motor.
A travelable distance display device for a vehicle according to any one of claims 1 to 6. 8. A fuel tank mounted on a vehicle for storing fuel, an engine for driving drive wheels of the vehicle while using the fuel for running the vehicle, and an operation through an operating means. A controller that calculates an instruction output to be generated by the engine and controls the supply of the fuel from the tank to the engine based on the instruction output; and at least a travel distance detection unit that detects a travel distance of the vehicle, A remaining fuel amount detecting means for detecting the remaining amount of the fuel stored in the tank, and mutually corresponding traveling distance detection values detected simultaneously or substantially simultaneously by the traveling distance detecting means and the remaining fuel amount detecting means. And a storage means for storing a plurality of sets of remaining fuel amount detection values, and a running method for calculating a travelable distance of the vehicle using the least squares method based on a plurality of sets of stored data stored in the storage means. And distance calculating means, characterized in that it includes a display means for displaying the travelable distance calculated by the travel distance calculating means, the travel distance display apparatus for a vehicle.