Display control device

Abstract

To display an estimated consumption rate calculated with excellent accuracy.SOLUTION: A display control device includes a drive device driving a drive shaft connected to an axle and a display device displaying information, is used for a vehicle mounting at least one of fuel and electricity as an energy source to travel, displays an estimated consumption rate estimated as a future energy consumption rate of the vehicle on a display device, estimates an average vehicle speed of the vehicle on the basis of a prescribed parameter reflecting a travelable distance as a distance that the vehicle can travel with an amount of the energy source mounted on the vehicle or a travelable distance, and calculates the estimated consumption rate on the basis of the estimated average vehicle speed.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a display control device. [Background technology]

[0002] Conventionally, a range calculation device for calculating the cruising distance of a vehicle has been proposed for use in a vehicle equipped with a power storage device (secondary battery) (see, for example, Patent Document 1). This device calculates the average vehicle speed during past travel over a specified distance, and derives an energy consumption rate corresponding to the average vehicle speed from a table showing the relationship between the vehicle's energy consumption rate (electricity consumption) and the vehicle speed. The device then calculates the cruising distance based on the derived energy consumption rate and the power storage ratio of the power storage device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-64364 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a display device for displaying information is provided in the passenger compartment and an estimated consumption rate that is estimated as the future energy consumption rate of the vehicle is displayed on the display device, it is recognized that it is an important issue to display an accurately calculated estimated consumption rate. In the above-mentioned cruising range calculation device, the estimated consumption rate is derived using an average vehicle speed in past travel. The average vehicle speed in past travel may deviate from the average vehicle speed in future travel, and the estimated consumption rate may not be calculated accurately.

[0005] The display control device of the present disclosure has a primary object to display an estimated consumption rate that is calculated with high accuracy. [Means for solving the problem]

[0006] The display control device of the present disclosure employs the following means to achieve the above-mentioned main object. A first display control device of the present disclosure is a display control device used for a vehicle that has a drive device that drives a drive shaft connected to an axle and a display device that displays information, and that runs on at least one of fuel and electricity as an energy source, and causes the display device to display an estimated consumption rate that is estimated as a future energy consumption rate of the vehicle, and is characterized in that it estimates an average vehicle speed of the vehicle based on a predetermined parameter that reflects a travelable distance that is a distance that the vehicle can travel with the amount of the energy source mounted on the vehicle, and calculates the estimated consumption rate based on the estimated average vehicle speed.

[0007] In the display control device disclosed herein, the average vehicle speed of the vehicle is estimated based on a predetermined parameter reflecting a drivable distance, which is a distance that the vehicle can travel with the amount of energy source installed in the vehicle, or the drivable distance, and an estimated consumption rate is calculated based on the estimated average vehicle speed. When the drivable distance is long, it is considered that the frequency of high-speed driving is high and the average vehicle speed is high compared to when the drivable distance is short. Therefore, by estimating the average vehicle speed of the vehicle based on a predetermined parameter reflecting the drivable distance, the average vehicle speed can be estimated more accurately. Since the estimated consumption rate is calculated based on the average vehicle speed estimated in this way, the estimated consumption rate can be calculated more accurately. As a result, the estimated consumption rate calculated with high accuracy can be displayed. Here, examples of the "predetermined parameter" include the amount of energy source installed in the vehicle, the expected drivable distance from the vehicle's current location to the destination calculated in a navigation system installed in the vehicle, and the driving history of the driver when driving the vehicle in the past.

[0008] In the first display control device of the present disclosure, the drive device has a motor for driving and a power storage device that exchanges power with the motor, the specified parameter is a power storage rate of the power storage device, and the average vehicle speed is estimated using the power storage rate and a specified relationship that is predetermined as a relationship between the power storage rate and the average vehicle speed, and an estimated electricity consumption is calculated as the estimated consumption rate based on the average vehicle speed.

[0009] In this case, the vehicle may have an air conditioning device that operates by receiving a supply of electric power to condition the air inside the passenger compartment, and a first electric power consumption that is an estimated value of a driving electric power consumption and a second electric power consumption that is an estimated value of an air conditioning electric power consumption may be set based on the average vehicle speed, and the estimated electric power consumption may be calculated by adding the second electric power consumption to the first electric power consumption.

[0010] A second display control device of the present disclosure is a display control device used in a vehicle which has a drive device that drives a drive shaft connected to an axle, an air conditioning device that conditions the air inside the passenger compartment, and a display device that displays information, and which runs on at least one of fuel or electricity as an energy source, and which causes the display device to display an estimated consumption rate that is estimated as a future energy consumption rate of the vehicle, and which sets the first and second consumption rates so that when the amount of the energy source installed in the vehicle is large, the first consumption rate as the estimated traveling distance per unit energy amount is smaller than when the amount of the energy source installed in the vehicle is small, and the second consumption rate as the estimated traveling distance per unit energy consumed by the air conditioning device is larger, and the sum of the first consumption rate and the second consumption rate is set as the estimated consumption rate.

[0011] In the second display control device of the present disclosure, the first and second consumption rates are set so that when the amount of energy sources mounted on the vehicle is large, the first consumption rate as the estimated driving distance per unit energy amount is smaller and the second consumption rate as the estimated driving distance per unit energy consumption of the air conditioner is larger than when the amount of energy sources mounted on the vehicle is small, and the sum of the first and second consumption rates is set as the estimated consumption rate. When the amount of energy sources mounted on the vehicle is large, the driving distance is longer and the frequency of high-speed driving is higher than when the amount of energy sources mounted on the vehicle is small. Therefore, the running resistance is larger and the first consumption rate is smaller. Furthermore, when the driving distance is longer, the second consumption rate is larger. Therefore, when the amount of energy sources mounted on the vehicle is large, the first consumption rate as the estimated driving distance per unit energy amount is smaller and the second consumption rate as the estimated driving distance per unit energy consumption of the air conditioner is larger than when the amount of energy sources mounted on the vehicle is small, the first and second consumption rates are set so that the driving electric power consumption and the air conditioning electric power consumption can be set more accurately, and the estimated electric power consumption can be calculated more accurately. As a result, an estimated consumption rate that is calculated with high accuracy can be displayed.

[0012] A third display control device of the present disclosure is used in a vehicle having a drive device having a motor for driving, a storage device that exchanges power with the motor, and a display device that displays information, and causes the display device to display an estimated electricity consumption that is estimated as the future electricity consumption of the vehicle as an estimated consumption rate, and has the gist of displaying the estimated electricity consumption on the display device when the storage rate of the storage device is large compared to when the storage rate is small.

[0013] In the third display control device of the present disclosure, when the power storage ratio of the power storage device is high, the estimated power consumption is made larger compared to when it is small. When the power storage ratio of the power storage device is high, the drivable distance, which is the distance that the vehicle can travel with the power storage ratio of the power storage device, is longer compared to when it is small. It is considered that when the drivable distance is long, high-speed driving is more frequent and power consumption is higher compared to when the drivable distance is short. Therefore, when the power storage ratio of the power storage device is high, the estimated power consumption, i.e., the estimated consumption rate, can be set more accurately by making the estimated power consumption larger compared to when the power storage ratio is low. As a result, the estimated consumption rate can be displayed more accurately. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic configuration diagram of an electric vehicle 20 equipped with a display control device according to an embodiment of the present invention. [Diagram 2] 10 is a flowchart showing an example of a display routine. [Diagram 3] FIG. 4 is an explanatory diagram showing an example of the relationship between the power storage ratio SOC and the average vehicle speed Vav. [Figure 4] FIG. 4 is an explanatory diagram showing an example of the relationship between a travelable distance Rd and an average vehicle speed Vav. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a schematic configuration diagram of an electric vehicle 20 equipped with a display control device of the present embodiment. As shown in the figure, the electric vehicle 20 of the present embodiment includes a motor 32 for driving, an inverter 34, a battery 36 as a power storage device, an air conditioner 40, a navigation system 42, and an electronic control unit (hereinafter referred to as "ECU") 50.

[0016] The motor 32 is configured as a synchronous generator motor, and includes a rotor with a permanent magnet embedded in the rotor core, and a stator with a three-phase coil wound around the stator core. The rotor of the motor 32 is connected to a drive shaft 26 that is connected to the drive wheels 22a, 22b via a differential gear 24.

[0017] The inverter 34 is used to drive the motor 32 and is connected to the power line 38 together with the battery 36. The inverter 34 includes six transistors T11-T16 as switching elements and six diodes D11-D16 connected in parallel to the six transistors T11-T16, respectively. The transistors T11-T16 are arranged in pairs, two at a time, so as to be on the source side and the sink side of the positive and negative lines of the power line 38, respectively. Each of the connection points of the paired transistors T11-T16 is connected to each of the three-phase (U-phase, V-phase, W-phase) coils of the motor 32. Therefore, when a voltage is applied to the inverter 34, the ECU 50 adjusts the ratio of the on-time of the paired transistors T11-T16, thereby forming a rotating magnetic field in the three-phase coils and driving the motor 32 to rotate.

[0018] The battery 36 is configured as, for example, a lithium ion secondary battery or a nickel-hydrogen secondary battery having a rated voltage of about several hundred volts, and is connected to the power line 38 together with the inverter 34 as described above.

[0019] The air conditioner 40 is configured as a device for conditioning the air in the passenger compartment. The air conditioner 40 is operated by power from the battery 36 or an auxiliary battery (not shown) having a lower rated power than the battery 36. The air conditioner 40 is controlled by an ECU 50.

[0020] The navigation system 42 is a system that guides the vehicle to a set destination, and includes a map information database and a display unit (not shown). The map information database stores map information such as the pavement condition of the road surface in each section, the road width, the number of lanes, the width of the sidewalk, the direction in which vehicles can travel, and the legal speed limit. When a destination is set, the navigation system 42 sets a route based on the destination information, information on the current location (current vehicle position) acquired by GPS, and information stored in the map information database, and provides route guidance.

[0021] The ECU 50 includes a microcomputer, which has a CPU, a ROM, a RAM, a flash memory, an input / output port, and a communication port. The ECU 50 receives signals from various sensors via the input port. For example, the ECU 50 receives a rotational position θm from a rotational position sensor (e.g., a resolver) 32a that detects the rotational position of the rotor of the motor 32, and phase currents Iv and Iw from current sensors 32v and 32w that detect the V-phase and W-phase currents of the motor 32. The ECU 50 also receives a voltage Vb from a voltage sensor 36v attached between the terminals of the battery 36, and a current Ib from a current sensor 36i attached to the output terminal of the battery 36. The ECU 50 also receives a start signal from a start switch 60, a shift position SP from a shift sensor 62 that detects the operation position of a shift lever 61, an accelerator opening Acc from an accelerator sensor 64 that detects the depression amount of an accelerator pedal 63, a brake pedal position from a brake sensor 66 that detects the depression amount of a brake pedal 65, and a vehicle speed V from a vehicle speed sensor 67.

[0022] The ECU 50 outputs various control signals via an output port. For example, the ECU 50 outputs a display device 70 that displays control signals and information to a plurality of switching elements of the inverter 34. The ECU 50 calculates the motor 32 and the rotation speed Nm based on a control rotation position θmc based on the rotation position θm of the rotor of the motor 32 from the rotation position sensor 32a. The ECU 50 also calculates the storage rate SOC of the battery 36 based on an integrated value of the current Ib. The storage rate SOC is the rate of dischargeable power to the total capacity of the battery 36.

[0023] In an electric vehicle 20 equipped with the display control device of this embodiment configured as described above, the ECU 50 sets the required torque Td* required for driving (required of the drive shaft 26) based on the accelerator opening Acc and the vehicle speed V, sets the set required torque Td* as the torque command Tm* of the motor 32, and performs switching control of the multiple switching elements of the inverter 34 so that the motor 32 is driven by the torque command Tm*.

[0024] Next, the operation of the electric vehicle 20 equipped with the display control device of this embodiment configured as described above, in particular the operation when displaying in the passenger compartment the estimated electric power consumption (estimated consumption rate) as an estimated value of the future electric power consumption (energy consumption rate) of the vehicle and the mileage. Fig. 2 is a flowchart showing an example of a display routine executed by the ECU 50 of this embodiment. This routine is executed once per trip (the period from system startup to system shutdown) after the start switch 60 is turned on to start the system of the electric vehicle 20.

[0025] When this routine is executed, the CPU (not shown) of the ECU 50 executes a process of inputting the power storage ratio SOC and the power amount Wm of the motor 32 (step S100). The power storage ratio SOC is calculated based on the integrated value of the current Ib and input. The power amount Wm is the power amount of the motor 32 when the vehicle runs for a predetermined time T1 (for example, 2 minutes, 3 minutes, 5 minutes, etc.), and is calculated by subtracting the power consumption Pac of the air conditioner 40 from the charge / discharge power Pb of the battery 36, which is obtained as the product of the voltage Vb of the battery 36 from the voltage sensor 36a and the current Ib of the battery 36 from the current sensor 36b, during the predetermined time T1, and multiplying this by the predetermined time T1. Note that the running power Pd may be calculated as the product of the torque command Tm* of the motor 32 and the rotation speed Nm.

[0026] Next, an average vehicle speed Vav is estimated as an average vehicle speed V in future (future) travel based on the power storage ratio SOC (step S110). In step S110, a relationship between the power storage ratio and the average vehicle speed is obtained in advance by experiments, machine learning, or the like, and when the power storage ratio SOC is given, an average vehicle speed corresponding to the power storage ratio SOC is estimated as the average vehicle speed Vav from the relationship (predetermined relationship) between the power storage ratio and the average vehicle speed. FIG. 3 is an explanatory diagram showing an example of the relationship between the power storage ratio SOC and the average vehicle speed Vav. As shown in the figure, when the power storage ratio SOC is high, the average vehicle speed Vav is higher than when the power storage ratio SOC is low. This is based on the fact that when the power storage ratio SOC is high, the drivable distance Rd as a distance that can be traveled with the amount of electric power that can be discharged from the battery 36 is longer than when the power storage ratio SOC is low, and when the drivable distance Rd is long, the frequency of high-speed travel is higher and the average vehicle speed Vav is higher than when the drivable distance Rd is short. By estimating the average vehicle speed Vav based on the power storage ratio SOC in this way, the average vehicle speed Vav can be estimated more accurately.

[0027] Next, a traveling electric power consumption (first electric power consumption, first consumption rate) Ecd is calculated as an estimated value of the traveling electric power consumption for the upcoming travel (step S120). The traveling electric power consumption Ecd is the traveling distance per unit discharge power (unit amount of energy) of the battery 36. The traveling electric power consumption Ecd is calculated by multiplying the basic value Ecdb of the traveling electric power consumption by a coefficient K that is set so that the traveling electric power consumption Ecd is smaller when the average vehicle speed Vav is large compared to when it is small. Therefore, the traveling electric power consumption Ecd is smaller when the average vehicle speed Vav is large compared to when it is small. This is based on the fact that the traveling electric power consumption decreases when the average vehicle speed Vav is large compared to when it is small because the running resistance is large when the average vehicle speed Vav is large.

[0028] Next, air conditioning power consumption (second power consumption, second consumption rate) Eca is calculated as an estimated value of air conditioning power consumption for the upcoming travel (step S130). Air conditioning power consumption Eca is the travel distance of the electric vehicle 20 per unit power consumption (unit energy consumption) of the air conditioner 40. The air conditioning power consumption Eca is calculated by dividing the distance L2 traveled by the electric vehicle 20 in a predetermined time T2 by the power consumption Whca of the air conditioner 40 in the predetermined time T2. Here, the distance L2 is calculated by multiplying the average vehicle speed Vav by the predetermined time T2, and the power consumption Whca is calculated by multiplying the average power consumption Pa of the air conditioner 40 by the predetermined time T2. Therefore, the air conditioning power consumption Eca is calculated by dividing the average vehicle speed Vav by the average power consumption Pa, and is larger when the average vehicle speed Vav is high than when it is low.

[0029] After the traveling electric power consumption Ecd and the air-conditioning electric power consumption Eca are calculated in this manner, the traveling electric power consumption Ecd is added to the air-conditioning electric power consumption Eca to calculate the estimated electric power consumption Ec of the electric vehicle 20 (step S140). Since the estimated electric power consumption Ec is calculated using the average vehicle speed Vav estimated with high accuracy in this manner, the estimated electric power consumption Ec can be calculated with higher accuracy.

[0030] Then, the power storage rate SOC of the battery 36 is multiplied by the conversion coefficient ke to convert the power storage rate SOC of the battery 36 into the amount of power Wbsoc that can be discharged from the battery 36, and the amount of power Wbsoc is divided by the estimated power consumption Ec to calculate the remaining driving distance Rd (step S150). The calculated estimated power consumption Ec and the remaining driving distance Rd are displayed on the display device 70 (step S160), and this routine ends. Since the remaining driving distance Rd is calculated using the estimated power consumption Ec with high accuracy, the remaining driving distance Rd can be calculated with high accuracy. As a result, the accurately calculated estimated power consumption Ec and the remaining driving distance Rd can be displayed on the display device 70.

[0031] According to the electric vehicle 20 equipped with the display control device of the embodiment described above, the average vehicle speed Vav of the electric vehicle 20 is estimated based on the power storage ratio SOC, and the estimated electricity consumption Ec is calculated based on the estimated average vehicle speed Vav, thereby making it possible to display the estimated electricity consumption Ec that has been calculated with high accuracy.

[0032] In addition, the average vehicle speed Vav is estimated using the power storage ratio SOC and a predetermined relationship between the power storage ratio SOC and the average vehicle speed Vav, and the estimated electricity consumption Ec is calculated based on the average vehicle speed Vav, so that the accurately calculated estimated electricity consumption Ec can be displayed.

[0033] Furthermore, the electric vehicle 20 has an air conditioner 40 that operates by receiving a supply of electric power to condition the air inside the passenger compartment, and the estimated electric power consumption Ec can be calculated more appropriately by setting the traveling electric power consumption Ecd and the air conditioning electric power consumption Eca based on the average vehicle speed Vav and adding the air conditioning electric power consumption Eca to the traveling electric power consumption Ecd to calculate the estimated electric power consumption Ec.

[0034] In the above-described embodiment, the average vehicle speed Vav is estimated based on the power storage ratio SOC, and the estimated power consumption Ec is calculated based on the average vehicle speed Vav. However, the estimated power consumption Ec may be calculated based on the power storage ratio SOC without estimating the average vehicle speed Vav. In this case, the estimated power consumption Ec may be set to be larger when the power storage ratio SOC is high than when the power storage ratio SOC is low.

[0035] In the above embodiment, the traveling electric power cost Ecd is set to be smaller when the average vehicle speed Vav is large than when it is small. However, since the average vehicle speed Vav is larger when the power storage ratio SOC is large than when it is small, the traveling electric power cost Ecd may be set to be larger when the power storage ratio SOC is large than when it is small.

[0036] In the above embodiment, the air conditioning electric power cost Eca is set to be larger when the average vehicle speed Vav is large than when it is small. However, since the average vehicle speed Vav is larger when the power storage ratio SOC is large than when it is small, the air conditioning electric power cost Eca may be set to be smaller when the power storage ratio SOC is large than when it is small.

[0037] In the above-described embodiment, the travel electric power consumption Ecd and the air conditioning electric power consumption Eca are calculated, and the estimated electric power consumption Ec is calculated by adding the air conditioning electric power consumption Eca to the calculated travel electric power consumption Ecd. However, the estimated electric power consumption Ec may be calculated by adding the auxiliary electric power consumption as the traveling distance per unit energy consumption of the auxiliary equipment other than the air conditioner 40 that consumes the power of the battery 36 and the auxiliary battery in addition to the travel electric power consumption Ecd and the air conditioning electric power consumption Eca. The auxiliary electric power consumption can be calculated by dividing the average vehicle speed Vav by the average power consumption of the auxiliary equipment. Furthermore, when the electric vehicle 20 is equipped with a solar power generation system capable of charging the battery 36, the estimated electric power consumption Ec may be calculated by adding the solar charging electric power consumption as the traveling distance per unit power generation amount of the solar power generation system in addition to the travel electric power consumption Ecd and the air conditioning electric power consumption Eca. The solar charging electric power consumption can be calculated by dividing the average vehicle speed Vav by the average charging power of the solar power generation system. Furthermore, the learned electric power consumption Ecdl obtained by learning for each trip may be used as the estimated electric power consumption Ec. The learned electric fuel consumption Ecdl is calculated by the following formula (1) when the start switch 60 is turned off and the system is stopped. In formula (1), "Ecd" is the electric fuel consumption in the current trip, and is calculated by dividing the travel distance in the current trip by the energy consumed in traveling in the current trip (the discharge power of the battery 36). "Previous Ecdl" is the learned electric fuel consumption Ecdl up to the previous trip. "A" is a predetermined value as the learning reflection rate. "Al" is the reflection rate of the electric fuel consumption calculated in the current trip to the learned electric fuel consumption Ecdl. "k" is a gain.

[0038] Ecdl=(1-A)·previous Ecdl+A·((1-A1)·previous Ecdl+A1·Ecd·k)·(1)

[0039] In the above-described embodiment, the average vehicle speed Vav is larger when the power storage ratio SOC is large compared to when it is small. However, in an electric vehicle of a type in which the average vehicle speed Vav is smaller when the power storage ratio SOC is large compared to when it is small, the average vehicle speed Vav may be smaller when the power storage ratio SOC is large compared to when it is small.

[0040] In the above-described embodiment, the average vehicle speed Vav is estimated based on the power storage ratio SOC. However, instead of or together with the power storage ratio SOC, the average vehicle speed Vav may be estimated based on a predetermined parameter reflecting the drivable distance Rd with the amount of energy source mounted on the vehicle, such as an expected drivable distance from the current location of the electric vehicle 20 to the destination calculated in the navigation system 69 or a driving history of the driver when driving the electric vehicle 20 in the past. Also, the drivable distance Rd may be used instead of the predetermined parameter. FIG. 4 is an explanatory diagram showing an example of the relationship between the drivable distance Rd and the average vehicle speed Vav. As shown in the figure, when the drivable distance Rd is large, the average vehicle speed Vav is larger than when it is small. This is based on the fact that the frequency of high-speed driving is higher when the drivable distance Rd is large than when it is small. In this way, the average vehicle speed Vav can be set more accurately by setting the average vehicle speed Vav so that the average vehicle speed Vav is larger when the drivable distance Rd is large than when it is small.

[0041] In the above-described embodiment, the display control device of the present disclosure is applied to an electric vehicle 20 that drives the drive shaft 26 connected to the axle with power from the motor 32. However, the display control device of the present disclosure may be applied to an automobile equipped with a drive device that drives the drive shaft 26 with power from an engine instead of the motor 32. In this case, the average vehicle speed of the vehicle may be estimated based on the amount of fuel in the fuel tank, and the fuel efficiency may be calculated using the estimated average vehicle speed. In this case, when the amount of fuel is large, the average vehicle speed may be set to be larger than when the amount of fuel is small. Also, when the amount of fuel is large, the running fuel efficiency may be set to be smaller and the air conditioning fuel efficiency may be set to be larger than when the amount of fuel is small, and the fuel efficiency may be calculated by adding the air conditioning fuel efficiency to the set running fuel efficiency. Also, the display control device of the present disclosure may be applied to a hybrid vehicle equipped with a drive device that drives the drive shaft 26 with power from an engine and a motor.

[0042] Note that the correspondence between the main elements of the embodiment and the main elements of the invention described in the Means for Solving the Problem column does not limit the elements of the invention described in the Means for Solving the Problem column, since the embodiment is an example for specifically explaining the form for implementing the invention described in the Means for Solving the Problem column. In other words, the interpretation of the invention described in the Means for Solving the Problem column should be made based on the description in that column, and the embodiment is merely a specific example of the invention described in the Means for Solving the Problem column.

[0043] The above describes embodiments for implementing the present disclosure, but the present disclosure is not limited to these embodiments, and it goes without saying that the present disclosure can be implemented in various forms without departing from the gist of the present disclosure. [Industrial Applicability]

[0044] The present disclosure is applicable to the manufacturing industry of display control devices, etc. [Explanation of symbols]

[0045] 20 electric vehicles, 50 ECUs, 70 displays.

Claims

1. A display control device is used in a vehicle that has a drive device that drives a drive shaft connected to an axle and a display device that displays information and runs on at least one of fuel and electricity as an energy source, and causes the display device to display an estimated consumption rate that is estimated as a future energy consumption rate of the vehicle, An average vehicle speed of the vehicle is estimated based on a predetermined parameter reflecting a travelable distance, which is a distance that the vehicle can travel with the amount of the energy source installed in the vehicle, or based on the travelable distance, and the estimated consumption rate is calculated based on the estimated average vehicle speed. Display control device.

2. 2. The display control device according to claim 1, The drive device includes a motor for driving the vehicle and a power storage device for exchanging electric power with the motor; the predetermined parameter is a power storage ratio of the power storage device, The average vehicle speed is estimated using the power storage ratio and a predetermined relationship between the power storage ratio and the average vehicle speed, and an estimated electricity consumption is calculated as the estimated consumption rate based on the average vehicle speed. Display control device.

3. 3. The display control device according to claim 2, The vehicle has an air conditioning device that is powered by electricity and conditions air inside a passenger compartment, A first electric power consumption which is an estimated value of a traveling electric power consumption and a second electric power consumption which is an estimated value of an air-conditioning electric power consumption are set based on the average vehicle speed, and the estimated electric power consumption is calculated by adding the first electric power consumption to the second electric power consumption. Display control device.

4. A display control device for a vehicle that runs on at least one of fuel and electricity as an energy source, the display control device having a drive unit that drives a drive shaft connected to an axle, an air conditioning unit that conditions air inside a passenger compartment, and a display device that displays information, the display device displaying an estimated energy consumption rate that is estimated as a future energy consumption rate of the vehicle, When the amount of the energy source mounted on the vehicle is large, the first consumption rate as the estimated travel distance per unit energy amount is smaller than when the amount of the energy source mounted on the vehicle is small, and the second consumption rate as the estimated travel distance per unit energy consumption of the air conditioner is larger. The first and second consumption rates are set so that the sum of the first consumption rate and the second consumption rate is set as the estimated consumption rate. Display control device.

5. A display control device is used in a vehicle having a drive unit including a motor for driving, a power storage device for exchanging power with the motor, and a display device for displaying information, the display device displaying an estimated electric power consumption that is estimated as a future electric power consumption of the vehicle, When the power storage rate of the power storage device is high, the estimated power consumption is increased compared to when the power storage rate is low. Display control device.

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