Electric vehicle and display device

Abstract

To communicate information about a power storage amount of a battery to a user in a clear manner.SOLUTION: An electric vehicle is a vehicle which notifies information about electric power for traveling to a user and comprises a processor, a display device, a battery which stores the electric power for traveling and a cooling / temperature rising device which adjusts temperature of the battery according to operation of the user by using the electric power stored in the battery. The processor calculates an index value for comparison about a power storage amount of the battery when the cooling / temperature rising device is operated and when it is not operated (steps S113, S115, S116, S118) and displays the calculated index value for comparison to the display device (steps S122, S124, S126, S128). A user of the electric vehicle can be informed of the value for comparison of the power storage amount of the battery when the cooling / temperature rising device for adjusting the temperature of the battery according to the operation of the user by using the power stored in the battery storing the power for traveling of the electric vehicle is operated and when it is not operated.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an electric vehicle and a display device, and more particularly to an electric vehicle that notifies a user of information related to power for running the electric vehicle, and a display device that notifies a user of information related to power for running the electric vehicle. [Background technology]

[0002] BACKGROUND ART Conventionally, there has been a display device for an electric vehicle that displays a driving range that changes depending on whether or not air conditioning is on, based on the average speed of the vehicle and the power consumption of the air conditioning (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-141673 Summary of the Invention [Problem to be solved by the invention]

[0004] In electric vehicles, in addition to air conditioning, power may also be consumed for purposes other than driving. For example, when a charging facility is set as a destination, a function that adjusts the battery temperature in advance to improve charging efficiency consumes battery power. Therefore, there is room for improvement in how battery consumption is displayed to users of electric vehicles.

[0005] This disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an electric vehicle and a display device that can convey information about the amount of electricity stored in the electricity storage device to the user in an easy-to-understand manner. [Means for solving the problem]

[0006] The electric vehicle according to this disclosure is an electric vehicle that notifies a user of information regarding electric power for driving, and includes a processor, a display device, a power storage device that stores electric power for driving, and a temperature adjustment device that adjusts the temperature of the power storage device in accordance with user operation using the electric power stored in the power storage device. The processor calculates a comparison index value relating to the amount of stored electric power in the power storage device when the temperature adjustment device is operated and when it is not operated, and displays the calculated comparison index value on the display device.

[0007] With this configuration, it is possible to notify the user of the electric vehicle of a value for comparing the amount of electricity stored in the electricity storage device when the temperature adjustment device, which adjusts the temperature of the electricity storage device in accordance with user operation using electricity stored in the electricity storage device for running the electric vehicle, is operated and when it is not operated, thereby providing an electric vehicle that can communicate information about the amount of electricity stored in the electricity storage device to the user in an easy-to-understand manner.

[0008] According to another aspect of the present disclosure, the display device is a display device that notifies a user of information regarding the power used to run an electric vehicle, and displays a comparison index value regarding the amount of power stored in the power storage device when a temperature adjustment device that adjusts the temperature of the power storage device that stores power for running is operated and when it is not operated.

[0009] According to this configuration, it is possible to provide a display device that can convey information about the amount of stored power in the power storage device to the user in an easy-to-understand manner.

[0010] The comparison index value may be a parameter relating to the amount of stored electricity when the vehicle reaches the destination with and without the temperature adjustment device operating.

[0011] With this configuration, it is possible to provide the user with information in an easy-to-understand manner about the amount of stored power when the vehicle reaches the destination with and without the temperature adjustment device operating.

[0012] The comparison index value may be a parameter corresponding to the amount of stored electricity that decreases due to use of the temperature adjustment device until the vehicle becomes unable to travel using the electric power of the electricity storage device.

[0013] With this configuration, it is possible to provide the user with information in an easy-to-understand manner about the amount of stored electricity that will decrease as a result of use of the temperature adjustment device until the vehicle becomes unable to travel using the power of the electricity storage device.

[0014] When the electric vehicle is traveling or when a destination for the electric vehicle is set, a value related to the cruising distance may be preferentially displayed as the comparison index value, and when the power storage device is being externally charged or when a charging plug is connected to the electric vehicle, a value related to the SOC may be preferentially displayed as the comparison index value.

[0015] With this configuration, it is possible to selectively notify the user of a value related to the cruising range or a value related to the SOC depending on the situation, thereby improving user convenience. [Effects of the Invention]

[0016] According to this disclosure, it is possible to provide an electric vehicle and a display device that can convey information about the amount of electricity stored in a power storage device to a user in an easy-to-understand manner. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram showing the overall configuration of an electric vehicle according to this embodiment; [Figure 2] 10 is a flowchart showing the flow of a battery display process in this embodiment. [Figure 3] 5 is a diagram showing a state of remaining charge display relating to the amount of stored power in the battery on the meter panel in this embodiment. FIG. [Figure 4] 4 is a diagram showing an example of an SOC display related to the amount of stored electricity in the battery on the meter panel in this embodiment. FIG. [Figure 5]10 is a diagram showing a mode of a cruising distance display relating to the amount of stored electricity in the battery on the meter panel in this embodiment. FIG. [Figure 6] 10 is a diagram showing a display mode of the battery charge amount displayed on the meter panel at the time of arrival in this embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0019] 1 is an overall configuration diagram of an electrically powered vehicle 1 according to this embodiment. In this embodiment, the electrically powered vehicle 1 is, for example, an electric vehicle (BEV: Battery Electric Vehicle). The electrically powered vehicle 1 includes a motor generator (MG) 10, which is a rotating electric machine, a power transmission gear 20, drive wheels 30, a power control unit (PCU) 40, a system main relay (SMR) 50, a battery 100, a monitoring unit 200, and an electronic control unit (ECU) 300.

[0020] The MG 10 is, for example, an interior permanent magnet synchronous motor (IPM motor) that functions as both an electric motor (motor) and a generator. The output torque of the MG 10 is transmitted to drive wheels 30 via a power transmission gear 20 that includes a reducer, a differential gear, and the like.

[0021] When braking the electric vehicle 1, the MG 10 is driven by the drive wheels 30 and operates as a generator. As a result, the MG 10 also functions as a braking device that performs regenerative braking to convert the kinetic energy of the electric vehicle 1 into electric power. The regenerative power generated by the regenerative braking force of the MG 10 is stored in the battery 100.

[0022] PCU 40 is a power conversion device that converts power bidirectionally between MG 10 and battery 100. PCU 40 includes, for example, an inverter and a converter that operate based on a control signal from ECU 300. PCU 40 may be configured without the converter.

[0023] SMR 50 is electrically connected to a power line connecting battery 100 and PCU 40. When SMR 50 is closed (ON) (conductive) in response to a control signal from ECU 300, power can be exchanged between battery 100 and PCU 40. On the other hand, when SMR 50 is opened (OFF) (disconnected) in response to a control signal from ECU 300, the electrical connection between battery 100 and PCU 40 is interrupted.

[0024] The battery 100 stores power for driving the MG 10. The battery 100 is a rechargeable DC power supply (secondary battery) and is configured by stacking a plurality of unit cells (battery cells) and electrically connecting them in series, for example. The battery 100 corresponds to a storage battery. The unit cells are configured, for example, by lithium-ion batteries. The unit cells may be nickel-metal hydride batteries or all-solid-state batteries.

[0025] The monitoring unit 200 includes a voltage detection unit, a current sensor, and a temperature detection unit. The voltage detection unit detects the voltage VB of the battery. The current sensor detects the current IB input to and output from the battery 100. The temperature detection unit 230 detects the temperature TB of the battery 100. Each detection unit outputs the detection result to the ECU 300.

[0026] Electrically powered vehicle 1 is equipped with DC inlet 60 and AC inlet 80, and is capable of charging (external charging) battery 100 from EVSE (charging equipment) 2, which includes an external DC power supply 400 or an external AC power supply 500. DC inlet 60 is configured to be connectable to a connector 420 provided at the tip of a charging cable 410 of external DC power supply (EVSE) 400. Charging relay 70 is electrically connected to a power line connecting DC inlet 60 and battery 100. Charging relay 70 switches between supplying and cutting off power between DC inlet 60 and battery 100 in response to a control signal from ECU 300. When charging relay 70 is closed, external charging (fast charging) of battery 100 is performed.

[0027] The AC inlet 80 is configured to allow connection to a connector 520 provided at the tip of a charging cable 510 of an external AC power source (EVSE) 500. An on-board charger 130 is provided on the power line between the AC inlet 80 and the battery 100, and converts AC power supplied from the external AC power source into DC power and also converts the power into a voltage that can charge the battery 100. A charging relay 90 is electrically connected to the power line connecting the on-board charger 130 and the battery 100. The charging relay 90 switches between supplying and cutting off power between the on-board charger 130 and the battery 100 in response to a control signal from the ECU 300. Closing the charging relay 90 performs external charging (normal charging) of the battery 100. When charging the electric vehicle 1 (battery 100), external charging is performed using either an external DC power source 400 or an external AC power source 500.

[0028] The ECU 300 includes a CPU (Central Processing Unit) 301, a memory (including, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory)) 302, and a communication unit 303. The ECU 300 controls each device so that the electric vehicle 1 is in a desired state, based on information such as signals received from the monitoring unit 200, signals from various sensors (not shown) (for example, an accelerator position signal, a vehicle speed signal, etc.), and maps and programs stored in the memory 302. The communication unit 303 includes a communication I / F (interface) for wireless communication with the network 900 and the user terminal 3. The communication unit 303 may include a TCU (Telematics Control Unit) and / or a DCM (Data Communication Module) for wireless communication. The ECU 300 also controls a cooling / heating device 800, which will be described later.

[0029] Navigation device 600 calculates the current position (vehicle position) based on map data including information such as the position and output of EVSE (for example, DC power supply 400, AC power supply 500) and GPS (Global Positioning System) information. Navigation device 600 is configured to include a CPU 601, memory 602, and communication unit 603 similar to ECU 300, as well as a GPS 604, and is realized by executing a program stored in the memory. Navigation device 600 provides route guidance to a destination set by the user. It is also possible to set intermediate points on the route to the destination. Note that the map data may be configured to be acquired by communication via external server 5 and network 900.

[0030] The HMI (Human Machine Interface) device 700 includes an input device and a display device. In addition to a CPU 701, a memory 702, and a communication unit 703 similar to those of the ECU 300, the HMI device 700 also includes a touch panel display 704 that functions as an input device and a display device, and the touch panel display 704 also serves as an input device and a display device of the navigation device 600.

[0031] The user terminal 3 is configured to be portable by the user. The user terminal 3 is a mobile terminal carried and operated by the user (vehicle manager) of the electric vehicle 1. In this embodiment, a smartphone equipped with a touch panel display is used as the user terminal 3. Any terminal that can be carried by the user of the electric vehicle 1 can be used as the user terminal 3. For example, a laptop, a tablet terminal, a portable game console, or a wearable device (such as a smart watch, smart glasses, or smart gloves) can also be used as the user terminal 3. The user terminal 3 can communicate with the communication unit 303, for example, by short-range wireless communication, and can also communicate with the external server 5 via the network 900.

[0032] The electric vehicle 1 is equipped with a cooling / heating device 800. The cooling / heating device 800 adjusts the temperature of the battery 100. Hereinafter, temperature adjustment will also be referred to as "temperature regulation." The cooling / heating device 800 is made up of a battery cooling section (battery cooling system) 801 and a battery heating section (battery heating system) 802. The cooling / heating device 800 may be configured to be able to cool / heat the battery 100, and may be air-cooled (heat exchange using a gas as a medium) or liquid-cooled (heat exchange using a liquid as a medium), and may utilize exhaust heat from the MG 10 or the PCU 40, or may utilize heat generated by charging and discharging the battery 100.

[0033] The battery 100 has an appropriate charging power (charging current) depending on the temperature TB of the battery 100, and there is a concern that charging with a current exceeding the appropriate charging power may accelerate deterioration of the battery 100. Furthermore, charging with a current exceeding the power that the battery 100 can accept (allowable power) may result in a decrease in charging efficiency and a decrease in power consumption during charging. If the charging power (charging current) is limited when the temperature TB is high or low in order to suppress deterioration of the battery 100, the charging time may become longer depending on the state of the temperature TB. For this reason, when external charging of the battery 100 is expected, it is preferable to adjust the temperature of the battery 100 to an appropriate temperature range beforehand before starting charging.

[0034] Conventionally, an HMI device 700 has been available for an electric vehicle 1 that displays a driving range that varies depending on whether or not air conditioning is on, based on the average speed of the electric vehicle 1 and the power consumption of the air conditioning. In an electric vehicle 1, power may be consumed for purposes other than driving, in addition to air conditioning. For example, when a charging facility is set as a destination in the navigation device 600, the cooling / heating device 800 is operated to adjust the temperature of the battery 100 in advance to improve charging efficiency, which consumes power from the battery 100. For this reason, there is room for improvement in how the power consumption of the battery 100 is displayed to the user of the electric vehicle 1.

[0035] Therefore, a processor such as CPU 301 of ECU 300 or CPU 701 of HMI device 700 calculates a comparison index value relating to the amount of stored power in battery 100 when cooling / heating device 800 is operated and when it is not operated, and displays the calculated comparison index value on touch panel display 704 of HMI device 700.

[0036] This makes it possible to notify the user of the electric vehicle 1 of a value for comparing the amount of electricity stored in the battery 100 when the cooling / heating device 800, which adjusts the temperature of the battery 100 in response to user operation using the electricity stored in the battery 100 that stores the power for propelling the electric vehicle 1, is operated and when it is not operated. As a result, information about the amount of electricity stored in the battery 100 can be communicated to the user in an easy-to-understand manner.

[0037] 1, the electric vehicle 1 further includes a preconditioning switch 304 for activating or stopping the cooling / heating device 800. When the preconditioning switch 304 is operated to start the operation of the cooling / heating device 800, the temperature of the battery 100 is adjusted to a temperature range suitable for charging.

[0038] 2 is a flowchart showing the flow of the battery display process in this embodiment. Referring to FIG. 2, the battery display process is called by CPU 301 of ECU 300 from a higher-level process at predetermined intervals and executed.

[0039] The CPU 301 of the ECU 300 determines whether it is the update period for the display of the amount of stored power of the battery 100 on the meter panel 305 (see FIGS. 3 and 4 described below) (step S111). If it is determined that it is not the update period for the display (NO in step S111), the CPU 301 determines whether the user has performed an operation to switch the display mode for the amount of stored power of the battery 100 (step S112). If it is determined that the display switching operation has not been performed (NO in step S112), the CPU 301 returns the processing to be executed to the higher-level processing that called this battery display processing.

[0040] On the other hand, if it is determined that it is the display update period (YES in step S111) or that a display switching operation has been performed (YES in step S112), CPU 301 calculates the current SOC of battery 100 and the predicted cruising range based on that SOC (step S113). The cruising range is, for example, a value obtained by dividing the amount of stored power corresponding to the current SOC by the average electricity efficiency. The average electricity efficiency may be a catalog value or the most recent learned value. If temperature control is in progress, the cruising range is calculated taking into account the amount of power used for temperature control. The cruising range may also be calculated taking into account factors that affect the cruising range, such as the load weight of electric vehicle 1 and the temperature.

[0041] Next, CPU 301 determines whether or not the temperature of battery 100 is being controlled by cooling / heating device 800 (step S114). If it determines that the temperature is not being controlled (NO in step S114), CPU 301 calculates the amount of power that will be reduced by using temperature control until the battery runs out of power if temperature control is started, the reduced SOC corresponding to that amount of power, and the reduced cruising distance corresponding to that amount of power (step S115). Note that, since the amount of power that can be output from battery 100 increases by performing temperature control, the amount of power used for temperature control may increase until the battery runs out of power if temperature control is started, net of the amount of power used for temperature control.

[0042] On the other hand, if it is determined that temperature control is in progress (YES in step S114), CPU 301 calculates the amount of power that will increase if temperature control is stopped and not used for temperature control until the battery runs out of power, the increased SOC corresponding to that amount of power, and the increased cruising distance corresponding to that amount of power (step S116). Note that, since the amount of power that can be output from battery 100 does not increase when temperature control is not performed, the amount of power that will not be used for temperature control until the battery runs out of power may decrease when temperature control is stopped, net of this.

[0043] After step S115 or step S116, CPU 301 determines whether a destination is being set in navigation device 600 (step S117). If it is determined that a destination is being set (YES in step S117), CPU 301 calculates the expected SOC upon arrival at the destination with and without temperature control, and the cruising distance corresponding to that SOC (step S118).

[0044] If it is determined that a destination is not being set (NO in step S117), or after step S118, CPU 301 determines whether the display related to the amount of stored power in battery 100 is being displayed in the remaining power display format on meter panel 305, or whether the display related to the amount of stored power in battery 100 has been switched to the remaining power display format (step S121). If it is determined that the display is being displayed in the remaining power display format or has been switched to the remaining power display format (YES in step S121), CPU 301 uses the calculation results of steps S113, S115, and S116 to display the display related to the amount of stored power in battery 100 in the remaining power display format on meter panel 305 (step S122).

[0045] 3A and 3B are diagrams showing the manner of remaining charge display relating to the amount of stored power in battery 100 on meter panel 305 in this embodiment. Referring to Fig. 3A, in the manner of remaining charge display, the current SOC is displayed in the form of a bar graph indicated by thin hatching, and the SOC that decreases (or increases) due to temperature adjustment is displayed in the form of a bar graph indicated by thick hatching.

[0046] As a modified example, as shown in FIG. 3(B), the current SOC may be displayed in the form of a bar graph indicated by thin hatching in the upper row, and the SOC obtained by subtracting the decreasing (or increasing) SOC from the current SOC may be displayed in the form of a bar graph indicated by thin hatching in the lower row.

[0047] 2, if it is determined that the display is not in the remaining capacity display mode and has not been switched to the remaining capacity display mode (NO in step S121), CPU 301 determines whether the display related to the amount of stored power of battery 100 is being displayed in the SOC display mode on meter panel 305 or whether the display related to the amount of stored power of battery 100 has been switched to the SOC display mode (step S123).If it is determined that the display is in the SOC display mode or has been switched to the SOC display mode (YES in step S123), CPU 301 uses the calculation results of steps S113, S115, and S116 to display the display related to the amount of stored power of battery 100 in the SOC display mode on meter panel 305 (step S124).

[0048] 4A and 4B are diagrams showing the manner of SOC display relating to the amount of power stored in battery 100 on meter panel 305 in this embodiment. Referring to Fig. 4A, when temperature control of battery 100 is not being performed, the SOC display manner shows the current SOC as a value that would be obtained if temperature control were continued to be stopped, as a numerical value (the numerical value "82%" in Fig. 4A) on the left side of the display frame, while the SOC obtained by subtracting the SOC that will decrease (or increase) due to temperature control (9% in Fig. 4A) from the current SOC (82% in Fig. 4A) is a numerical value that would be obtained if temperature control were started, as a numerical value (the numerical value "73%" in Fig. 4A) on the right side of the display frame.

[0049] As shown in Figure 4(B), when the temperature of battery 100 is being controlled, the SOC display mode is such that the SOC obtained by subtracting the SOC that will decrease (or increase) due to the temperature control (9% in Figure 4(B)) from the current SOC (82% in Figure 4(B)) is displayed as a number on the left side of the display frame (as "73%" in Figure 4(B)) as the value if the temperature control is continued, while the current SOC is displayed as a number on the right side of the display frame (as "82%" in Figure 4(B)) as the value if the temperature control is stopped.

[0050] As a modified example of Figure 4(A), as shown in Figure 4(C), when the temperature of battery 100 is not being controlled, the SOC display mode is such that the current SOC is displayed as a number on the left side of the display frame (the number "82%" in Figure 4(C)) as the value if the temperature control is continued to be stopped, as in Figure 4(A), while, unlike Figure 4(A), the SOC that decreases (or increases) due to the temperature control may be displayed as a number on the right side of the display frame (the number "-9%" in Figure 4(C)) as the value if the temperature control is started.

[0051] Furthermore, as a modified example of Figure 4(B), as shown in Figure 4(D), when the temperature of battery 100 is being controlled, the SOC display mode is such that, as in Figure 4(B), the SOC obtained by subtracting the SOC that decreases (or increases) due to the temperature control (9% in Figure 4(D)) from the current SOC (82% in Figure 4(D)) is displayed as a number on the left side of the display frame (as "73%" in Figure 4(D)) as the value if the temperature control is continued, while, unlike Figure 4(B), the SOC that increases (or decreases) due to the temperature control being stopped is displayed as a number on the right side of the display frame (as "+9%" in Figure 4(D)) as the value if the temperature control is stopped.

[0052] 2, if it is determined that the display is not in the SOC display mode and has not been switched to the SOC display mode (NO in step S123), CPU 301 determines whether the display related to the amount of stored power in battery 100 is being displayed in the range display mode on meter panel 305 or whether the display related to the amount of stored power in battery 100 has been switched to the range display mode (step S125).If it is determined that the display is in the range display mode or has been switched to the range display mode (YES in step S125), CPU 301 uses the calculation results in steps S113, S115, and S116 to display the display related to the amount of stored power in battery 100 in the range display mode on meter panel 305 (step S126).

[0053] Figure 5 is a diagram showing a mode of range display related to the amount of power stored in battery 100 on meter panel 305 in this embodiment. Referring to Figure 5, as shown in Figure 5(A), when temperature control of battery 100 is not being performed, the mode of range display is such that the current cruising range is displayed as a numerical value on the left side of the display frame (the numerical value "340 km" in Figure 5(A)) as the numerical value if temperature control continues to be stopped, while the cruising range obtained by subtracting the cruising range that will decrease (or increase) due to temperature control (30 km in Figure 5(A)) from the current cruising range (340 km in Figure 5(A)) is displayed as a numerical value on the right side of the display frame (the numerical value "310 km" in Figure 5(A)) as the numerical value if temperature control is started.

[0054] As shown in Figure 5(B), when the temperature of battery 100 is being controlled, the range display shows the current cruising range (340 km in Figure 5(B)) minus the range that will decrease (or increase) due to the temperature control (30 km in Figure 5(B)), which is the value that will be obtained if the temperature control is continued, and is displayed as a number on the left side of the display frame (as "310 km" in Figure 5(B)), while the current actual distance that will be traveled if the temperature control is stopped is displayed as a number on the right side of the display frame (as "340 km" in Figure 5(B)).

[0055] As a modified example of Figure 5(A), as shown in Figure 5(C), when the temperature of battery 100 is not being controlled, the cruising range display mode is such that the current cruising range is displayed as a number on the left side of the display frame (the number "340 km" in Figure 5(C)) as the value if temperature control is continued to be stopped, as in Figure 5(A), while, unlike Figure 5(A), the cruising range that decreases (or increases) due to temperature control may be displayed as a number on the right side of the display frame (the number "-30 km" in Figure 5(C)) as the value if temperature control is started.

[0056] Furthermore, as a modified example of Figure 5(B), as shown in Figure 5(D), when the temperature of battery 100 is being adjusted, the range display mode is such that, as in Figure 5(B), the range obtained by subtracting the cruising range that will decrease (or increase) due to the temperature adjustment (30 km in Figure 5(D)) from the current cruising range (340 km in Figure 5(D)) is displayed as a number on the left side of the display frame (the number "310 km" in Figure 5(D)) as the value if the temperature adjustment is continued, while, unlike Figure 5(B), the cruising range that will increase (or decrease) by stopping the temperature adjustment may be displayed as a number on the right side of the display frame (the number "+30 km" in Figure 5(D)) as the value if the temperature adjustment is stopped.

[0057] 2, if it is determined that the display is not in the range display mode and has not been switched to the range display mode (NO in step S125), CPU 301 determines whether the display related to the amount of stored power in battery 100 is being displayed in the arrival display mode on meter panel 305 or whether the display related to the amount of stored power in battery 100 has been switched to the arrival display mode (step S127).If it is determined that the display is in the arrival display mode or has been switched to the arrival display mode (YES in step S127), CPU 301 uses the calculation result of step S118 to display the display related to the amount of stored power in battery 100 in the arrival display mode on meter panel 305 (step S128).

[0058] 6A and 6B are diagrams showing aspects of arrival display related to the amount of power stored in battery 100 on meter panel 305 in this embodiment. Referring to Fig. 6A, in the arrival display aspect, the SOC predicted upon arrival at the destination set in navigation device 600 without temperature control is displayed as a numerical value on the left side of the display frame (the numerical value "25%" in Fig. 6A), while the SOC predicted upon arrival at the destination set in navigation device 600 with temperature control is displayed as a numerical value on the right side of the display frame (the numerical value "16%" in Fig. 6A).

[0059] As a variation of Figure 6(A), as shown in Figure 6(B), in the arrival display mode, the cruising range expected when the temperature is not controlled upon arrival at the destination set in the navigation device 600 may be displayed as a number on the left side of the display frame (the number "55 km" in Figure 6(B)), while the cruising range expected when the temperature is controlled upon arrival at the destination set in the navigation device 600 may be displayed as a number on the right side of the display frame (the number "25 km" in Figure 6(B)).

[0060] Returning to FIG. 2, after step S122, after step S124, after step S126, after step S128, or if it is determined that the display is not in the arrival display mode and has not been switched to the arrival display mode (NO in step S127), CPU 301 returns the processing to be executed to the higher-level processing that called this battery display processing.

[0061] [Variations] (1) In the above-described embodiment, the display mode of the amount of charge stored in battery 100 on meter panel 305 can be switched during driving to a remaining charge display mode, an SOC display mode, a cruising range display mode, and an arrival display mode, as shown in Fig. 2. However, the present invention is not limited to this, and at least two or more of these four display modes may be selectively switched.

[0062] Furthermore, the display mode of the amount of power stored in the battery 100 on the meter panel 305 may be configured such that a cruising distance display mode (see FIGS. 5 and 6(B)) is displayed preferentially while the electric vehicle 1 is traveling or when a destination for the electric vehicle 1 is set, whereas a SOC display mode (see FIGS. 3, 4, and 6(A)) is displayed preferentially while the battery 100 is being externally charged or when a charging connector 420, 520 is connected to the electric vehicle 1. Displaying the first display mode preferentially compared to the second display mode may mean that only the first display mode can be displayed, or that the first display mode is displayed before the second display mode, or that the first display mode is displayed normally, but the second display mode is displayed when a predetermined operation is performed by the user.

[0063] (2) In the embodiment described above, the battery display process shown in Fig. 2 is executed by CPU 301 of ECU 300. However, this is not limiting, and the processor that executes the battery display process may be another processor, such as CPU 701 of HMI device 700 or CPU 601 of navigation device 600.

[0064] (3) In the above-described embodiment, the display regarding the amount of power stored in the battery 100 is displayed on the meter panel 305. However, this is not limiting, and the display regarding the amount of power stored in the battery 100 may be displayed on another display device, such as the touch panel display 704 of the HMI device 700 or the touch panel display of the user terminal 3.

[0065] (4) The above-described embodiments can be understood as disclosure of a display device such as the meter panel 305, the touch panel display 704 of the HMI device 700, or the touch panel display of the user terminal 3, or as disclosure of a vehicle such as the electric vehicle 1 that includes the display device, or as disclosure of a method or program for displaying the amount of charge stored in the battery 100 in the display device or vehicle.

[0066] [summary] (1) As shown in FIG. 1, the electric vehicle 1 is a vehicle that notifies a user of information related to the electric power used for driving, and includes a processor (e.g., CPU 301 of the ECU 300, CPU 701 of the HMI device 700, CPU 601 of the navigation device 600, CPU of the user terminal 3), a display device (e.g., meter panel 305, touch panel display of the HMI device 700, touch panel display of the user terminal 3), a battery 100 that stores the electric power used for driving, and a cooling / heating device 800 that uses the electric power stored in the battery 100 to adjust the temperature of the battery 100 in accordance with user operation. As shown in Figures 2 to 6, the processor calculates comparison index values ​​related to the amount of stored power in battery 100 when cooling / heating device 800 is operated and when it is not operated (e.g., steps S113, S115, S116, and S118), and displays the calculated comparison index values ​​on the display device (e.g., steps S122, S124, S126, and S128; see Figures 3 to 6).

[0067] This makes it possible to notify the user of the electric vehicle 1 of a value for comparing the amount of electricity stored in the battery 100 when the cooling / heating device 800, which adjusts the temperature of the battery 100 in response to user operation using the electricity stored in the battery 100 that stores the power for propelling the electric vehicle 1, is operated and when it is not operated. As a result, information about the amount of electricity stored in the battery 100 can be communicated to the user in an easy-to-understand manner.

[0068] (2) As shown in FIG. 6, the comparison index value may be a parameter (e.g., SOC, cruising distance) related to the amount of stored electricity when the vehicle reaches the destination when the cooling / heating device 800 is operated and when the cooling / heating device 800 is not operated.

[0069] This makes it possible to easily convey to the user information about the amount of stored power when the vehicle reaches the destination with and without the cooling / heating device 800 operating.

[0070] (3) As shown in Figures 2 to 5, the comparison index value may be a parameter (e.g., SOC, cruising range) corresponding to the amount of stored electricity that decreases due to use of the cooling / heating device 800 until the battery 100 becomes unable to run on its own power.

[0071] This makes it possible to easily convey to the user information about the amount of stored power that will decrease as a result of use of the cooling / heating device 800 until the vehicle becomes unable to travel on the power of the battery 100.

[0072] (4) As shown in FIGS. 2 to 6 and variant example (1), when the electric vehicle 1 is traveling or when a destination of the electric vehicle 1 is set, a value related to the cruising distance may be preferentially displayed as the comparison index value, and when the battery 100 is being externally charged or when the charging connector 420, 520 is connected to the electric vehicle 1, a value related to the SOC may be preferentially displayed as the comparison index value.

[0073] This allows the user to selectively be notified of a value related to the cruising range or a value related to the SOC depending on the situation, thereby improving user convenience.

[0074] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0075] 1 Electric vehicle, 3 User terminal, 5 External server, 10 MG, 20 Power transmission gear, 30 Drive wheel, 40 PCU, 50 SMR, 60 DC inlet, 70, 90 Charging relay, 80 AC inlet, 100 Battery, 130 On-board charger, 200 Monitoring unit, 230 Temperature detection unit, 300 ECU, 301, 601, 701 CPU, 302, 602, 702 Memory, 303, 603, 703 Communication unit, 304 Preconditioning switch, 305 Meter panel, 400 DC power supply, 410, 510 Charging cable, 420, 520 Connector, 500 AC power supply, 600 Navigation device, 700 HMI device, 704 Touch panel display, 800 Cooling / heating device, 900 Network.

Claims

1. An electric vehicle that notifies a user of information regarding electric power for driving, a processor; A display device; a power storage device that stores power for driving; a temperature adjustment device that adjusts the temperature of the power storage device in response to an operation by the user using the power stored in the power storage device, The processor: calculating a comparison index value relating to the amount of stored power in the power storage device when the temperature adjustment device is operated and when the temperature adjustment device is not operated; The calculated comparison index value is displayed on the display device.

2. A display device that notifies a user of information regarding electric power for running an electric vehicle, A display device that displays a comparative index value relating to the amount of stored electricity in a power storage device when a temperature adjustment device that adjusts the temperature of the power storage device that stores power for driving is operated and when the temperature adjustment device is not operated.

3. The display device according to claim 2 , wherein the comparison index value is a parameter relating to the amount of stored power when the destination is reached with and without the temperature adjustment device being operated.

4. The display device according to claim 2 , wherein the comparison index value is a parameter corresponding to the amount of stored power that decreases with use of the temperature adjustment device until the vehicle becomes unable to travel with the power of the power storage device.

5. As the comparative index value, While the electric vehicle is traveling or when a destination of the electric vehicle is set, a value related to a cruising distance is preferentially displayed as the comparison index value; 5. The display device according to claim 2, wherein when the power storage device is being externally charged or when a charging plug is connected to the electric vehicle, a value related to SOC is preferentially displayed as the comparison index value.

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