JP2014064364A - Vehicle cruising distance calculation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle cruising distance calculation device capable of accurately calculating a cruising distance with considering vehicle speed influence.SOLUTION: A vehicle cruising distance calculation device (20) for calculating a cruising distance that a vehicle (1) mounted with a battery (2) as a power source can cruise comprises an electric power consumption table (40) for linking a power consumption ratio due to vehicle traveling to a vehicle speed each other and storing them, a vehicle speed detection unit (28) for detecting a vehicle speed, an average vehicle speed calculation unit (30) for calculating an average vehicle speed in the latest specified distance on the basis of the detected vehicle speed, and a cruising distance calculation unit (32) for calculating a cruising distance on the basis of the power consumption ratio corresponding to the calculated average vehicle speed and a residual capacity of a secondary battery.

Description

  The present invention relates to a vehicular cruising distance calculation device, and more particularly to a vehicular cruising distance calculation device that calculates a cruising distance that a vehicle equipped with a secondary battery as a power source can travel.

  2. Description of the Related Art Conventionally, a vehicle cruising distance calculation device that calculates a cruising distance that a vehicle such as a gasoline vehicle or a diesel vehicle equipped with fuel as a power source can travel is used. This vehicle cruising distance calculation device calculates a cruising distance from, for example, the remaining amount of fuel and the average fuel consumption of the vehicle. By presenting the calculated cruising distance to the driver in this way, the driver can easily determine whether or not the vehicle can travel to the destination without refueling.

  Furthermore, in recent years, an electric vehicle that uses a secondary battery such as a lithium ion battery as a power source and runs by driving a motor with electric power supplied from the secondary battery is used. However, the cruising distance of electric vehicles is shorter than conventional gasoline vehicles and diesel vehicles, and there are not enough charging facilities that can charge the secondary batteries of electric vehicles. There is a concern that there may be a case where the destination cannot be reached due to insufficient remaining capacity. Therefore, it is required to charge the secondary battery at an appropriate timing by calculating the cruising distance more accurately than before and providing it to the driver.

  For example, in Patent Document 1, a power consumption rate calculation unit that calculates the latest power consumption rate per unit travel distance and a plurality of past power consumption rates recorded in the recording unit are updated and recorded in the recording unit. A travelable distance calculation device is described that includes a power consumption rate update unit, and a travelable distance calculation unit that calculates a travelable distance from a plurality of power consumption rates recorded in a recording unit and a remaining battery level of a secondary battery. ing.

JP 2011-142757 A

  By the way, since the electric power required for running the electric vehicle greatly fluctuates according to the vehicle speed, it is necessary to consider the influence of the vehicle speed in order to accurately calculate the cruising distance of the electric vehicle. However, the above-described travelable distance calculation device of Patent Document 1 merely calculates the travelable distance from a plurality of power consumption rates recorded in the recording unit and the remaining battery level of the secondary battery, and the vehicle speed is the power consumption. Since the influence on the rate is not taken into consideration, there is a possibility that the cruising distance cannot be accurately calculated particularly in a situation where the vehicle speed changes greatly (for example, a situation where the vehicle enters the expressway from a general road).

  The present invention has been made to solve the above-described problems of the prior art, and provides a vehicle cruising distance calculation device that can accurately calculate a cruising distance in consideration of the influence of vehicle speed. Objective.

In order to achieve the above object, a vehicle cruising distance calculation device according to the present invention is a vehicle cruising distance calculation device that calculates a cruising distance that a vehicle equipped with a secondary battery as a power source can travel. An average vehicle speed calculation that calculates an average vehicle speed at the nearest predetermined distance based on the detected vehicle speed, a vehicle speed detection means that detects a vehicle speed, and a power consumption table that stores the power consumption rate and the vehicle speed by traveling in association with each other And a cruising distance calculating means for calculating a cruising distance based on the power consumption rate corresponding to the calculated average vehicle speed and the remaining capacity of the secondary battery.
In the present invention configured as described above, the cruising distance can be calculated based on the power consumption rate that varies depending on the vehicle speed, and the cruising distance can be accurately calculated in consideration of the influence of the vehicle speed.

In the present invention, it is preferable that the vehicle cruising distance calculation device further consumes power at the sampling distance based on the average power consumption due to vehicle travel at the most recent sampling distance and the average vehicle speed at the sampling distance. The power consumption calculating means updates the power consumption table based on the average vehicle speed and the power consumption rate at the sampling distance.
In the present invention configured as described above, the relationship between the vehicle speed and the power consumption rate, which changes according to the driving tendency of the driver and the traveling state of the vehicle, can be sequentially reflected in the power consumption table for each sampling distance. The cruising distance can be calculated more accurately.

In the present invention, it is preferable that the average vehicle speed calculation means calculates an average vehicle speed at a predetermined distance that is different depending on the current vehicle speed.
In the present invention configured as described above, the cruising distance can be calculated based on the power consumption rate corresponding to the average vehicle speed of the appropriate distance according to the vehicle speed, and the appropriate power corresponding to the traveling state of the vehicle can be calculated. The cruising distance can be calculated more accurately based on the quantity consumption rate.

In the present invention, it is preferable that the average vehicle speed calculating means calculates the average vehicle speed from a vehicle speed equal to or higher than a predetermined value at the nearest predetermined distance.
In the present invention configured as described above, it is possible to exclude the influence of the temporary decrease in the vehicle speed at the intersection or the railroad crossing on the average vehicle speed, and it is possible to calculate the cruising distance more accurately.

In the present invention, it is preferable that the cruising distance calculating means calculates the cruising distance based on power consumption by the air conditioner of the vehicle when the current vehicle speed is less than a predetermined value.
In the present invention configured as described above, the cruising distance that varies depending on the power consumption of the air conditioner can be calculated even when the power consumption due to traveling of the vehicle is small.

Further, in the present invention, there is provided a vehicle cruising distance calculation device that calculates a cruising distance that can be traveled by a vehicle equipped with fuel as a power source, and stores a fuel consumption rate and a vehicle speed associated with traveling of the vehicle in association with each other. A fuel consumption table corresponding to the calculated average vehicle speed, a fuel consumption rate corresponding to the calculated average vehicle speed, a fuel consumption rate corresponding to the calculated average vehicle speed, a fuel consumption rate corresponding to the calculated average vehicle speed, Cruising distance calculating means for calculating a cruising distance based on the remaining amount.
In the present invention configured as described above, the cruising distance can be calculated based on the fuel consumption rate that varies depending on the vehicle speed, and the cruising distance can be accurately calculated in consideration of the influence of the vehicle speed.

  According to the vehicle cruising distance calculation apparatus of the present invention, it is possible to provide a vehicle cruising distance calculation apparatus that can accurately calculate the cruising distance in consideration of the influence of the vehicle speed.

1 is a schematic plan view showing an overall structure of a vehicle equipped with a vehicle cruising distance calculation device according to an embodiment of the present invention. It is a block diagram which shows the electric constitution of the vehicle carrying the cruising range calculation apparatus for vehicles by embodiment of this invention. It is the table | surface which illustrated the information memorize | stored in the electricity bill table. It is a flowchart of the power consumption calculation process in which a power consumption calculation part calculates a power consumption and updates a power consumption table. It is the diagram which illustrated the relationship between the vehicle speed memorize | stored in the electricity expense table, and electricity expense. It is a flowchart of the cruising distance calculation process which calculates the cruising distance which a vehicle can continue. It is the top view which illustrated the output device which displays a cruising distance. It is a diagram which illustrates the cruising distance which changes with driving | running | working of a vehicle. It is the diagram which illustrated the relationship between the nearest predetermined distance and the present vehicle speed which an average vehicle speed calculation part uses for calculation of average vehicle speed.

Hereinafter, a vehicle cruising distance calculation apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, a vehicle equipped with a vehicle cruising distance calculation device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic plan view showing the overall structure of a vehicle equipped with a vehicle cruising distance calculation device according to an embodiment of the present invention.

  As shown in FIG. 1, a vehicle 1 equipped with a vehicle cruising distance calculation device according to the present embodiment is an electric vehicle equipped with a battery 2 (secondary battery) as a power source. In the motor room 4 at the front of the vehicle body (in front of the passenger compartment) of the vehicle 1 is mounted a motor unit 8 that drives the drive wheels 6 (left and right front wheels in the example of FIG. 1) with electric power supplied from the battery 2. ing. Further, the motor inverter 10 and the battery charger 12 are arranged in the motor room 4.

  Further, a battery mounting frame 14 formed so as to have a substantially T shape in plan view is provided below the passenger compartment floor from the center to the rear of the vehicle body. The battery 2 is mounted on the battery mounting frame 14.

  A charging receptacle 16 is provided on the left side surface of the rear part of the vehicle body. The charging receptacle 16 is connected to the battery charger 12 via a charging cable 18. The charging cable 18 is routed along the battery 2 on the lower surface side of the passenger compartment floor.

  Next, the electrical configuration of the vehicle cruising distance calculation device according to the embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing an electrical configuration of the vehicle 1 equipped with the vehicle cruising distance calculation device according to the embodiment of the present invention.

As shown in FIG. 2, the vehicle 1 on which the vehicle cruising distance calculating device 20 is mounted is provided with an air conditioner 22 that air-conditions the passenger compartment. The air conditioner 22 includes a cooler and a PTC (Positive Temperature Coefficient) heater. The power consumption value of the air conditioner 22 is input to the vehicle cruising distance calculation device 20 via the ECU.
Further, the vehicle 1 detects a vehicle speed pulse and outputs a detection signal to the vehicle cruising distance calculation device 20 and an output device that outputs various information provided from the vehicle cruising distance calculation device 20. 26.
Further, the vehicle cruising distance calculation device 20 receives the output power value of the battery 2 and the SOC (State of Charge) via the ECU.

As shown in FIG. 2, the vehicle cruising distance calculation device 20 includes a vehicle speed detection unit 28 that detects a vehicle speed, an average vehicle speed calculation unit 30 that calculates an average vehicle speed at the nearest predetermined distance based on the vehicle speed, and a cruising range of the vehicle 1. A cruising distance calculation unit 32 that calculates a distance, a power consumption calculation unit 34 that calculates a power consumption rate (power consumption) due to traveling of the vehicle 1, and an information provision unit 36 that provides various types of information to be output by the output device 26 The cruising distance calculation unit 32 has a storage unit 38 for storing data used when calculating the cruising distance.
Among these, the vehicle speed detecting unit 28, the average vehicle speed calculating unit 30, the cruising distance calculating unit 32, the power consumption calculating unit 34, and the information providing unit 36 are a CPU and various programs (such as an OS that are interpreted and executed on the CPU). (Including a basic control program and an application program that is activated on the OS and realizes a specific function), and a computer having an internal memory such as a ROM or RAM for storing the program and various data.

The storage unit 38 includes a power cost table 40 that stores power costs and vehicle speeds associated with traveling of the vehicle 1 in association with each other. The storage unit 38 is configured using a nonvolatile storage device such as a hard disk drive or a solid state drive.
FIG. 3 is a table illustrating information stored in the electricity cost table 40.
As shown in FIG. 3, in the electricity cost table 40, information indicating each range of the vehicle speed divided into a plurality of parts (“0 ≦ V <4” in FIG. 3) and the electricity cost (unit power amount) due to the traveling of the vehicle 1. A value (such as “10.5” in FIG. 3) indicating the cruising range) is stored in association with each other. An initial value is stored in advance in the electricity cost table 40, and the initial value is updated as needed in an electricity cost calculation process described later.

Next, each process performed by the vehicle cruising distance calculation device 20 will be described with reference to FIGS.
FIG. 4 is a flowchart of a power cost calculation process in which the power cost calculation unit 34 calculates a power cost and updates the power cost table 40. This power consumption calculation process is started and repeated when the ignition of the vehicle 1 is turned on and the vehicle cruising distance calculation device 20 is powered on.

  As shown in FIG. 4, when the power consumption calculation process is started, in step S <b> 1, the power consumption calculation unit 34 acquires a power value used for traveling the vehicle 1 for each predetermined distance D (for example, 20 m). Specifically, the power consumption calculating unit 34 subtracts the power consumption value of the air conditioner 22 from the output power value of the battery 2 to obtain the power value used for traveling of the vehicle 1 and temporarily stores it in the RAM. Remember.

  In step S2, the vehicle speed detector 28 detects the vehicle speed for each predetermined distance D based on the vehicle speed pulse output from the vehicle speed sensor 24, and temporarily stores it in the RAM.

  Next, in step S3, the electricity cost calculation unit 34 updates the electricity cost table 40 last time (after the electricity cost calculation process is started if the electricity cost table 40 has not been updated), the vehicle 1 has a predetermined sampling distance ( For example, it is determined whether or not the vehicle has traveled 2 km). Specifically, the electricity cost calculation unit 34 continuously acquires the vehicle speed pulse detected by the vehicle speed sensor 24, and calculates the travel distance of the vehicle 1 after updating the previous electricity cost table 40 based on the vehicle speed pulse. Then, it is determined whether or not the travel distance has reached 2 km. If the vehicle 1 has not traveled 2 km after updating the previous power cost table 40, the power cost calculation unit 34 repeats steps S1 and S2 until the vehicle 1 traveled 2 km after updating the previous power cost table 40.

  On the other hand, if the vehicle 1 has traveled the predetermined sampling distance after updating the previous power cost table 40, the process proceeds to step S4, and the power cost calculation unit 34 sets the power value acquired in step S1 while traveling the predetermined sampling distance. Based on this, the average power consumption by the traveling of the vehicle 1 at the latest sampling distance is calculated. Specifically, the power consumption calculation unit 34 calculates an average value of power values at the latest sampling distance acquired by the power consumption calculation unit 34 and stored in the RAM in step S1.

  Further, in step S5, the power consumption calculation unit 34 calculates the average vehicle speed at the latest sampling distance based on the vehicle speed detected in step S2 while traveling the predetermined sampling distance. Specifically, the power consumption calculation unit 34 calculates the average value of the vehicle speed at the latest sampling distance detected by the vehicle speed detection unit 28 and stored in the RAM in step S2.

Next, in step S6, the power consumption calculation unit 34 calculates the power consumption at the most recent sampling distance based on the average power consumption due to traveling of the vehicle 1 calculated in step S4 and the average vehicle speed calculated in step S5. The power consumption table 40 is updated with the average vehicle speed and the power consumption at the sampling distance.
Specifically, the power consumption calculation unit 34 divides the average vehicle speed (km / h) calculated in step S5 by the average power consumption (kW) calculated in step S4, thereby calculating the power consumption (km in the latest sampling distance). / KWh). Then, a weighted average is calculated by applying a predetermined weight to each of the power consumption stored in the power consumption table 40 and the calculated power consumption at the most recent sampling distance, and the power consumption table 40 is updated with this weighted average value.
FIG. 5 is a diagram illustrating the relationship between the vehicle speed and the electricity cost stored in the electricity cost table 40. The horizontal axis indicates the vehicle speed (km / h), and the vertical axis indicates the electricity cost (km / kWh). The solid line in FIG. 4 shows the relationship between the vehicle speed and the electricity cost stored in advance in the electricity cost table 40, and the broken line shows the relationship between the vehicle speed and the electricity cost updated by the above-described electricity cost calculation process.
As described above, by repeating the power consumption calculation process, the relationship between the vehicle speed and the power consumption, which changes according to the driving tendency of the driver and the traveling state of the vehicle 1, can be sequentially reflected in the power consumption table 40 for each sampling distance. .

  FIG. 6 is a flowchart of a cruising distance calculation process for calculating a cruising distance that the vehicle 1 can travel. This cruising distance calculation process is started when the ignition of the vehicle 1 is turned on and the vehicle cruising distance calculation device 20 is turned on, and is repeatedly executed in parallel with the above-described power consumption calculation process. In this cruising distance calculation process, it is assumed that the vehicle speed detector 28 detects the vehicle speed at a predetermined cycle based on the vehicle speed pulse output from the vehicle speed sensor 24 and accumulates the detected vehicle speed in the RAM.

  As shown in FIG. 6, when the cruising distance calculation process is started, in step S11, the average vehicle speed calculation unit 30 determines that the current vehicle speed is a predetermined value (this embodiment) based on the vehicle speed pulse output from the vehicle speed sensor 24. Then, it is determined whether it is 4 km / h) or more.

When the current vehicle speed is equal to or higher than the predetermined value, the process proceeds to step S12, and the average vehicle speed calculation unit 30 calculates the average vehicle speed at the nearest predetermined distance (4 km in the present embodiment) based on the vehicle speed detected by the vehicle speed detection unit 28. .
At this time, the average vehicle speed calculation unit 30 calculates an average value of vehicle speeds equal to or higher than a predetermined value (4 km / h in the present embodiment) among the vehicle speeds at the latest 4 km detected by the vehicle speed detection unit 28 and stored in the RAM. Is calculated as an average vehicle speed at a predetermined distance. Thereby, for example, it is possible to exclude the influence of a temporary decrease in vehicle speed at an intersection or railroad crossing on the average vehicle speed.

  Furthermore, in step S13, the average vehicle speed calculation unit 30 calculates the standard deviation of the vehicle speed at the nearest predetermined distance based on the vehicle speed detected by the vehicle speed detection unit 28. That is, the average vehicle speed calculation unit 30 calculates the standard deviation of the vehicle speed at the latest 4 km detected by the vehicle speed detection unit 28 and stored in the RAM as the standard deviation of the vehicle speed at the latest predetermined distance.

  Next, in step S14, the cruising distance calculation unit 32 refers to the electricity cost table 40 and identifies the average electricity cost corresponding to the average vehicle speed calculated in step S12. Specifically, the cruising distance calculation unit 32 sets the average vehicle speed calculated in step S12 as a median value, and uses the Gaussian distribution with the variance of the square of the standard deviation of the vehicle speed calculated in step S13 as a coefficient. Each stored electricity cost is weighted (Gaussian filter), and the sum is calculated as an average electricity cost.

Next, in step S15, the cruising distance calculation unit 32 specifies the remaining capacity of the battery 2 based on the capacity of the battery 2 and the SOC of the battery 2 input via the ECU.
Further, in step S16, the cruising distance calculation unit 32 calculates the average consumption of the air conditioner 22 in the latest predetermined time (1 hour in the present embodiment) based on the power consumption value of the air conditioner 22 input via the ECU. Calculate power.

Next, in step S17, the cruising distance calculation unit 32 calculates a cruising distance that the vehicle 1 can travel based on the average power consumption specified in step S14 and the remaining capacity of the battery 2 specified in step S15.
Specifically, the cruising distance calculation unit 32 multiplies the remaining capacity (kWh) of the battery 2 by the average power consumption (km / kWh), so that the cruising distance R when the power consumption due to the use of the air conditioner 22 is not considered. Calculate _drv (km).
The cruising distance calculation unit 32 divides the average power consumption (kW) of the air conditioner 22 calculated in step S16 by the average vehicle speed (km / h) of the latest predetermined travel distance (for example, 500 km). The amount of power consumed by the air conditioner 22 per mileage (kWh / km) is calculated. By dividing the remaining capacity of the battery 2 by the calculated power consumption, a cruising distance R _air (km) considering only the use of the air conditioner 22 is calculated.
Then, the cruising distance calculation unit 32 calculates the cruising distance R _out (km) considering the use of the air conditioner 22 by 1 / R _out = 1 / R _drv + 1 / R _air .

Next, in step S18, the information providing unit 36 causes the output device 26 to output the cruising distance calculated by the cruising distance calculating unit 32 in step S17. At this time, the information providing unit 36 causes the output device 26 to output both the cruising distance R _drv when power consumption due to the use of the air conditioner 22 is not considered and the cruising distance R _out considering the use of the air conditioner 22. .
FIG. 7 is a plan view illustrating the output device 26 that displays the cruising distance. As shown in FIG. 7, the output device 26 displays a remaining capacity gauge indicating the remaining capacity of the battery 2 specified in step S14 and the cruising distance calculated in step S17.

In step S11, if the current vehicle speed is not equal to or higher than the predetermined value (less than the predetermined value), the process proceeds to step S19, where the cruising distance calculation unit 32 determines the capacity of the battery 2 and the battery input via the ECU. Based on the SOC of 2, the remaining capacity of the battery 2 is specified.
Further, in step S20, the cruising distance calculation unit 32 calculates the average consumption of the air conditioner 22 in the latest predetermined time (1 hour in the present embodiment) based on the power consumption value of the air conditioner 22 input via the ECU. Calculate power.

Next, in step S21, the cruising distance calculation unit 32 considers only the use of the air conditioner 22 based on the remaining capacity of the battery 2 specified in step S19 and the average power consumption of the air conditioner 22 calculated in step S20. The cruising range R _air (km) is calculated. That is, the cruising distance calculation unit 32 divides the average power consumption (kW) of the air conditioner 22 calculated in step S20 by the average vehicle speed (km / h) of the latest predetermined travel distance (for example, 500 km). The amount of power consumed by the air conditioner 22 per mileage (kWh / km) is calculated. By dividing the remaining capacity of the battery 2 by the calculated power consumption, a cruising distance R _air (km) considering only the use of the air conditioner 22 is calculated.

Next, in step S22, the information providing unit 36 causes the output device 26 to output the cruising distance R _air calculated by the cruising distance calculating unit 32 in step S21.

Next, the effect | action by the vehicle cruising distance calculation apparatus 20 of this embodiment mentioned above is demonstrated.
FIG. 8 is a diagram illustrating the cruising distance that changes as the vehicle 1 travels. The horizontal axis represents the traveling distance of the vehicle 1, and the vertical axis represents the cruising distance calculated in the cruising distance calculation process. In the example of FIG. 8, the average vehicle speed in section A of the flat highway is 60 km / h, the average vehicle speed in section B of the uphill highway is 60 km / h, and the average vehicle speed in section C of the uphill highway is 80km / h, average vehicle speed in section D of downhill general road is 30km / h, average vehicle speed in section E of downhill highway is 80km / h, average vehicle speed in section F of downhill highway is 60km / h h, The average vehicle speed in the section G of a flat general road is 40 km / h.
Compared with a flat road, the running load increases on the uphill, and the electricity cost tends to deteriorate. Therefore, the cruising distance reduction rate (inclination) in the section B of the uphill highway is larger than the section A of the flat highway and the section G of the general road. In general, the higher the vehicle speed is, the worse the electricity cost is. Therefore, in the section C where the vehicle speed is higher than the section B, the cruising distance decrease rate is larger than that in the section B. Furthermore, even if the vehicle speed is high even if it is a downhill, the travel load is high and the electricity consumption is deteriorated. Therefore, the decrease rate of the cruising distance in the section E of the highway on the downhill as compared with the sections A and B Is getting bigger.
On the other hand, in the case of a downhill with a large inclination such that the regenerative brake is operated, the driving load is reduced and the power consumption is improved. Therefore, in the sections D and F of the downhill with a high inclination, the cruising distance increases. ing.
Thus, according to the vehicle cruising distance calculation device 20 of the present embodiment, it is possible to calculate a cruising distance that reflects a change in power consumption due to the influence of the vehicle speed.

Next, further modifications of the embodiment of the present invention will be described.
In step S12 of the cruising distance calculation process of the above-described embodiment, the average vehicle speed calculation unit 30 has been described as calculating the average vehicle speed at the nearest predetermined distance based on the vehicle speed detected by the vehicle speed detection unit 28. However, the average vehicle speed calculation unit 30 may calculate the average vehicle speed at the nearest predetermined distance that varies depending on the current vehicle speed.
FIG. 9 is a diagram illustrating the relationship between the nearest predetermined distance used by the average vehicle speed calculation unit 30 for calculating the average vehicle speed and the current vehicle speed. In FIG. 9, the horizontal axis indicates the current vehicle speed, and the vertical axis indicates the nearest predetermined distance that the average vehicle speed calculation unit 30 uses to calculate the average vehicle speed. For example, as shown in FIG. 9, the average vehicle speed section calculates the average vehicle speed over a longer distance as the vehicle speed increases.

Further, the vehicle cruising distance calculation device 20 of the above-described embodiment calculates the cruising distance that the vehicle 1 equipped with the secondary battery as a power source can travel, but the vehicle 1 equipped with fuel as the power source can travel. A cruising range may be calculated.
Specifically, the storage unit 38 includes a fuel consumption table that stores the fuel consumption rate (fuel consumption) and the vehicle speed by traveling of the vehicle 1 in association with each other, instead of the power consumption table 40.
In the cruising distance calculation process, the cruising distance calculation unit 32 refers to the fuel consumption table, specifies the average fuel consumption corresponding to the average vehicle speed calculated by the average vehicle speed calculation unit 30, and based on the average fuel consumption and the remaining amount of fuel. Calculate the cruising distance.

  Next, effects of the vehicle cruising distance calculation device 20 according to the above-described embodiment of the present invention and the modified example of the present invention will be described.

  First, the vehicle cruising distance calculation device 20 stores a power consumption table 40 that stores a power consumption rate and a vehicle speed associated with travel of the vehicle 1 in association with each other, a vehicle speed detection unit 28 that detects the vehicle speed, and a detected vehicle speed. Based on the average vehicle speed calculation unit 30 that calculates the average vehicle speed at the most recent predetermined distance, the cruising distance calculation unit 32 that calculates the cruising distance based on the power consumption rate corresponding to the average vehicle speed and the remaining capacity of the secondary battery. Therefore, it is possible to calculate the cruising distance based on different electric costs depending on the vehicle speed, and to accurately calculate the cruising distance in consideration of the influence of the vehicle speed.

  In particular, the power consumption calculation unit 34 calculates the power consumption rate at this sampling distance based on the average power consumption due to traveling of the vehicle 1 at the most recent sampling distance and the average vehicle speed at this sampling distance, and the average at this sampling distance. Since the power consumption table 40 is updated based on the vehicle speed and the power consumption rate, the relationship between the vehicle speed and the power consumption, which changes according to the driving tendency of the driver and the traveling state of the vehicle 1, is sequentially determined for each sampling distance. The cruising range can be calculated more accurately.

  Furthermore, since the average vehicle speed calculation unit 30 calculates the average vehicle speed at the nearest predetermined distance that differs according to the current vehicle speed, the average vehicle speed calculation unit 30 calculates the cruising distance based on the power consumption corresponding to the average vehicle speed of an appropriate distance according to the vehicle speed. Therefore, it is possible to calculate the cruising distance more accurately based on an appropriate power consumption corresponding to the traveling state of the vehicle 1.

  Furthermore, since the average vehicle speed calculation unit 30 calculates the average vehicle speed from a vehicle speed that is equal to or greater than a predetermined value at the most recent predetermined distance, it is possible to exclude the influence of a temporary decrease in vehicle speed at an intersection or railroad crossing on the average vehicle speed, The cruising distance can be calculated more accurately.

  The cruising distance calculation means calculates the cruising distance based on the power consumption by the air conditioner 22 of the vehicle 1 when the current vehicle speed is less than a predetermined value. The cruising distance that varies depending on the power consumption of the device 22 can be calculated.

  Further, the vehicle cruising distance calculation device 20 is based on the fuel consumption table that stores the fuel consumption rate and the vehicle speed by traveling of the vehicle 1 in association with each other, the vehicle speed detection unit 28 that detects the vehicle speed, and the detected vehicle speed. Since it has an average vehicle speed calculation unit 30 that calculates the average vehicle speed at the nearest predetermined distance, and a cruising distance calculation unit 32 that calculates a cruising distance based on the fuel consumption rate corresponding to the average vehicle speed and the remaining amount of fuel. The cruising distance can be calculated based on the fuel efficiency that varies depending on the vehicle speed, and the cruising distance can be accurately calculated in consideration of the influence of the vehicle speed.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Battery 4 Motor room 6 Drive wheel 8 Motor unit 10 Motor inverter 12 Battery charger 14 Battery mounting frame 16 Charging receptacle 18 Charging cable 20 Vehicle cruising distance calculation device 22 Air conditioner 24 Vehicle speed sensor 26 Output device 28 Vehicle speed detection unit 30 Average Vehicle Speed Calculation Unit 32 Cruising Range Calculation Unit 34 Electricity Cost Calculation Unit 36 Information Provision Unit 38 Storage Unit 40 Electricity Cost Table

Claims (6)

A cruising range calculation device for a vehicle that calculates a cruising range in which a vehicle equipped with a secondary battery as a power source can travel,
A power consumption table for storing the power consumption rate and the vehicle speed by traveling the vehicle in association with each other;
Vehicle speed detection means for detecting the vehicle speed;
Based on the detected vehicle speed, an average vehicle speed calculating means for calculating an average vehicle speed at the nearest predetermined distance;
A cruising distance calculation for a vehicle comprising: a cruising distance calculating means for calculating the cruising distance based on the power consumption rate corresponding to the calculated average vehicle speed and the remaining capacity of the secondary battery. apparatus.   Further, based on the average power consumption of the vehicle traveling at the most recent sampling distance and the average vehicle speed at this sampling distance, the power consumption rate at this sampling distance is calculated, and the average vehicle speed and power consumption rate at this sampling distance are calculated. The vehicle cruising distance calculation device according to claim 1, further comprising: a power consumption calculation means for updating the power consumption table based on   The vehicle cruising distance calculation device according to claim 1, wherein the average vehicle speed calculation means calculates an average vehicle speed at the nearest predetermined distance that differs according to a current vehicle speed.   The vehicle cruising distance calculation device according to any one of claims 1 to 3, wherein the average vehicle speed calculation means calculates an average vehicle speed from a vehicle speed equal to or greater than a predetermined value at the most recent predetermined distance.   The vehicle cruising range according to any one of claims 1 to 4, wherein the cruising distance calculating means calculates the cruising distance based on power consumption by an air conditioner of the vehicle when a current vehicle speed is less than a predetermined value. Distance calculation device. A vehicle cruising distance calculation device for calculating a cruising distance that a vehicle equipped with fuel as a power source can travel,
A fuel consumption table for storing the fuel consumption rate and the vehicle speed by traveling the vehicle in association with each other;
Vehicle speed detection means for detecting the vehicle speed;
Based on the detected vehicle speed, an average vehicle speed calculating means for calculating an average vehicle speed at the nearest predetermined distance;
A cruising distance calculation device for a vehicle, comprising: cruising distance calculation means for calculating the cruising distance based on the fuel consumption rate corresponding to the calculated average vehicle speed and the remaining amount of fuel.

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