Electric vehicle and display device

Abstract

The invention provides an electric vehicle and a display device, the electric vehicle is a vehicle informing a user of information related to driving power, and is provided with a processor, a display device, a storage battery for storing the driving power, and a cooling / heating device for adjusting the temperature of the storage battery according to the operation of the user by using the power stored in the storage battery. The processor calculates a comparison index value relating to the amount of charge of the storage battery when the cooling / heating device is operated and when the cooling / heating device is not operated, and displays the calculated comparison index value on the display device. Informing an electric vehicle of a value for comparing the amount of storage battery stored in a cooling / heating device for adjusting the temperature of the storage battery and the amount of storage battery stored in a non-operating cooling / heating device in accordance with a user's operation using the power stored in the storage battery for storing the power for the travel of the electric vehicle, the value being capable of comparing the amount of storage battery with the amount of storage battery stored in a cooling / heating device for adjusting the temperature of the storage battery A user of a vehicle.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electric vehicle and a display device. The present disclosure particularly relates to an electric vehicle that informs a user of information about electric power for running and a display device that informs a user of information about electric power for running of an electric vehicle. BACKGROUND

[0002] In the past, in an electric vehicle, there has been a display device that displays a travelable distance that varies depending on the presence or absence of an air conditioner based on the average speed of the vehicle and the consumed electric power of the air conditioner (for example, refer to Japanese Patent Application Publication No. 2021-141673).

[0003] In an electric vehicle, electric power is sometimes consumed in uses other than running in addition to the air conditioner. For example, in a case where a charging device is set as a destination, a function of performing temperature adjustment of a battery is operated in advance in order to improve charging efficiency, and as a result, electric power of the battery is consumed. Therefore, there is still room for improvement regarding how to display to a user of an electric vehicle regarding consumption of a battery. SUMMARY

[0004] The present disclosure is achieved to solve the above-described problems, and an object thereof is to provide an electric vehicle and a display device that can easily convey information about the charge amount of an electric storage device to a user.

[0005] The electric vehicle of the present disclosure is an electric vehicle that informs a user of information about electric power for running, and includes a processor, a display device, an electric storage device that stores electric power for running, and a temperature adjustment device that adjusts the temperature of the electric storage device using electric power stored in the electric storage device in accordance with an operation of the user.

[0006] The processor calculates a comparative index value about the charge amount of the electric storage device in a case where the temperature adjustment device is operated and in a case where the temperature adjustment device is not operated, and causes the calculated comparative index value to be displayed on the display device.

[0007] According to such a configuration, a value for comparison of the charge amount of the electric storage device in a case where the temperature adjustment device that adjusts the temperature of the electric storage device is operated and in a case where the temperature adjustment device is not operated can be informed to a user of the electric vehicle using electric power stored in the electric storage device that stores electric power for running of the electric vehicle and in accordance with an operation of the user. As a result, an electric vehicle that can easily convey information about the charge amount of the electric storage device to a user can be provided.

[0008] According to another aspect of the present disclosure, a display device is a display device that informs a user of information related to electric power for running of an electric vehicle, in which the display device displays a comparative index value related to a state of charge of an electric storage device that stores electric power for running, in a case where a temperature adjustment device that adjusts a temperature of the electric storage device is operating and in a case where the temperature adjustment device is not operating.

[0009] According to such a configuration, it is possible to provide a display device that can easily convey information related to a state of charge of an electric storage device to a user.

[0010] The comparative index value can be a parameter related to a state of charge at arrival at a destination in the case where the temperature adjustment device is operating and in the case where the temperature adjustment device is not operating.

[0011] According to such a configuration, it is possible to easily convey information related to a state of charge at arrival at a destination in the case where the temperature adjustment device is operating and in the case where the temperature adjustment device is not operating to a user.

[0012] The comparative index value can be a parameter corresponding to a state of charge that is reduced due to use of the temperature adjustment device until electric power through the electric storage device cannot be used for running.

[0013] According to such a configuration, it is possible to easily convey information related to a state of charge that is reduced due to use of the temperature adjustment device until electric power through the electric storage device cannot be used for running to a user.

[0014] As the comparative index value, it is possible to display, as the comparative index value, a value related to a distance to empty in running of the electric vehicle or in a case where a destination of the electric vehicle is set, and to display, as the comparative index value, a value related to a state of charge in external charging of the electric storage device or in a case where a charging plug is connected to the electric vehicle.

[0015] According to such a configuration, it is possible to selectively convey a value related to a distance to empty or a value related to a state of charge to a user according to a situation. As a result, it is possible to improve convenience for the user.

[0016] According to the present disclosure, it is possible to provide an electric vehicle and a display device that can easily convey information related to a state of charge of an electric storage device to a user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Features, advantages, technical and industrial significance of the embodiments of the present application will be described by way of non-limiting examples with reference to the accompanying drawings, wherein the same reference numerals denote the same elements.

[0018] Figure 1is a whole structure view of the electric vehicle of the embodiment.

[0019] Figure 2 is a flowchart showing a flow of the battery display processing in the embodiment.

[0020] Figure 3A is a view showing an example of a scheme of the state-of-charge display on the instrument panel in the embodiment.

[0021] Figure 3B is a view showing another example of the scheme of the state-of-charge display on the instrument panel in the embodiment.

[0022] Figure 4A is a view showing an example of a scheme of the SOC display on the instrument panel in the embodiment.

[0023] Figure 4B is a view showing another example of the scheme of the SOC display on the instrument panel in the embodiment.

[0024] Figure 4C is a view showing another example of the scheme of the SOC display on the instrument panel in the embodiment.

[0025] Figure 4D is a view showing another example of the scheme of the SOC display on the instrument panel in the embodiment.

[0026] Figure 5A is a view showing an example of a scheme of the distance-to-empty display on the instrument panel in the embodiment.

[0027] Figure 5B is a view showing another example of the scheme of the distance-to-empty display on the instrument panel in the embodiment.

[0028] Figure 5C is a view showing another example of the scheme of the distance-to-empty display on the instrument panel in the embodiment.

[0029] Figure 5D is a view showing another example of the scheme of the distance-to-empty display on the instrument panel in the embodiment.

[0030] Figure 6A is a view showing an example of a scheme of the arrival-time display on the instrument panel in the embodiment.

[0031] Figure 6B FIG. 7 is another example of a display scheme showing the display on the instrument panel in the present embodiment, which is a display at the time of arrival, in relation to the charge level of the storage battery. DETAILED DESCRIPTION

[0032] Hereinafter, for the embodiments of the present disclosure, description will be made in detail with reference to the drawings. Note that, for the same or equivalent parts in the drawings, the same reference numerals are assigned, and the description thereof will not be repeated.

[0033] Figure 1 FIG. 1 is a diagram showing the overall configuration of an electric vehicle 1 of the present embodiment. In the present embodiment, the electric vehicle 1 is, for example, a battery electric vehicle (BEV). The electric vehicle 1 is provided with a motor generator (MG) 10 that is a rotary electric machine, a power transmission gear 20, a drive wheel 30, a power control unit (PCU) 40, a system main relay (SMR) 50, a storage battery 100, a monitoring unit 200, and an electronic control unit (ECU) 300.

[0034] The MG 10 is, for example, an interior permanent magnet synchronous motor (IPM motor) of an embedded structure, and has a function as a motor and a function as a generator. The output torque of the MG 10 is transmitted to the drive wheel 30 via the power transmission gear 20 configured in such a manner as to include a speed reducer and a differential device, and the like.

[0035] At the time of braking of the electric vehicle 1, the MG 10 is driven by the drive wheel 30, and the MG 10 operates as a generator. Due to this, the MG 10 also functions as a brake device that performs regenerative braking of converting the kinetic energy of the electric vehicle 1 into electric power. The regenerative electric power generated by the regenerative braking force in the MG 10 is stored in the storage battery 100.

[0036] The PCU 40 is a power conversion device that converts electric power bidirectionally between the MG 10 and the storage battery 100. The PCU 40 includes, for example, an inverter and a converter that operate based on a control signal from the ECU 300. The PCU 40 can also be a structure in which the converter is omitted.

[0037] The SMR 50 is electrically connected with a power line that links the storage battery 100 and the PCU 40. In a case where the SMR 50 is closed (turned on) (in an on state) in accordance with a control signal from the ECU 300, electric power can be accepted between the storage battery 100 and the PCU 40. On the other hand, in a case where the SMR 50 is opened (turned off) (in an off state) in accordance with a control signal from the ECU 300, the electrical connection between the storage battery 100 and the PCU 40 is cut off.

[0038] The battery 100 stores electric power for driving the MG 10. The battery 100 is a direct-current power supply (secondary cell) capable of recharging, in which a plurality of single cells (battery cells) are stacked and electrically connected in series, for example. The battery 100 corresponds to a battery. The single cells are constituted by lithium-ion cells, for example. The single cells can also be nickel-hydrogen cells, or can also be all-solid-state cells.

[0039] The monitoring unit 200 includes a voltage detection section, a current sensor, and a temperature detection section. The voltage detection section detects the voltage VB of the battery. The current sensor detects the current IB input to or output from the battery 100. The temperature detection section 230 detects the temperature TB of the battery 100. Each detection section outputs the detection result to the ECU 300.

[0040] The electric automobile 1 is provided with a DC inlet 60 and an AC inlet 80. The electric automobile 1 is capable of charging (external charging) of the battery 100 from an EVSE (charging device) 2 including an external DC power supply 400 or an external AC power supply 500, and the like. The DC inlet 60 is constituted so as to be connectable to a connector 420 provided at the front end of a charging cable 410 of the external DC power supply (EVSE) 400. A charging relay 70 is electrically connected to a power line linking the DC inlet 60 and the battery 100. The charging relay 70 switches the supply and cutoff of electric power between the DC inlet 60 and the battery 100 in accordance with a control signal from the ECU 300. The external charging (quick charging) of the battery 100 is performed by closing the charging relay 70.

[0041] The AC inlet 80 is constituted so as to be connectable to a connector 520 provided at the front end of a charging cable 510 of the external AC power supply (EVSE) 500. A vehicle-mounted charger 130 is provided on a power line between the AC inlet 80 and the battery 100, converts alternating-current electric power supplied from the external AC power supply into direct-current electric power, and into a voltage capable of charging the battery 100. A charging relay 90 is electrically connected to a power line linking the vehicle-mounted charger 130 and the battery 100. The charging relay 90 switches the supply and cutoff of electric power between the vehicle-mounted charger 130 and the battery 100 in accordance with a control signal from the ECU 300. The external charging (normal charging) of the battery 100 is performed by closing the charging relay 90. Note that, at the time of charging of the electric automobile 1 (battery 100), the external charging is performed using either of the external DC power supply 400 or the external AC power supply 500.

[0042] The ECU 300 includes a central processing unit (CPU) 301, a memory 302, and a communication section 303. The memory 302 includes, for example, a read only memory (ROM) and a random access memory (RAM), and the like. The ECU 300 controls each device in such a manner that the electric vehicle 1 becomes a desired state, based on a signal accepted from the monitoring unit 200, a signal from various sensors not shown, information such as a map and a program stored in the memory 302, and the like. The signal from the various sensors is, for example, an accelerator opening degree signal, a vehicle speed signal, and the like. The communication section 303 includes a communication interface (I / F) for wireless communication with the network 900 and the user terminal 3. The communication section 303 can also include a telematics control unit (TCU) and / or a data communication module (DCM) that perform wireless communication. Also, the ECU 300 controls the cooling / warming device 800 described later.

[0043] The navigation device 600 calculates a current position (own vehicle position) based on map data including information such as the position and output of the EVSE, global positioning system (GPS) information, and the like. The EVSE is, for example, the DC power supply 400, the AC power supply 500. The navigation device 600 is configured by a CPU 601, a memory 602, and a communication section 603 like the ECU 300, and is realized by executing a program stored in the memory by a GPS 604, and the like. The navigation device 600 performs route guidance to a destination set by the user. Also, it is possible to set a via point on the route to the destination. Note that the map data can also be configured to be acquired from the external server 5, the network 900 through communication.

[0044] The human machine interface (HMI) device 700 includes an input device and a display device. The HMI device 700 includes a touch panel display 704 that functions as the input device and the display device, in addition to a CPU 701, a memory 702, and a communication section 703 like the ECU 300. The touch panel display 704 of the HMI device 700 functions as the input device and the display device of the navigation device 600.

[0045] The user terminal 3 is configured to be movable by the user. The user terminal 3 is a mobile terminal that is carried and operated by the user (vehicle manager) of the electric vehicle 1. In the present embodiment, as the user terminal 3, a smartphone having a touch panel display is adopted. Note that as the user terminal 3, any terminal that the user of the electric vehicle 1 can carry can be adopted. For example, a notebook computer, a tablet computer terminal, a portable game machine, a wearable device (smart watch, smart glasses, smart gloves, and the like), and the like can also be adopted as the user terminal 3. The user terminal 3 can communicate with the communication section 303 by, for example, close proximity wireless, and can communicate with the external server 5 via the network 900.

[0046] The electric automobile 1 is provided with a cooling / warming device 800. The cooling / warming device 800 adjusts the temperature of the battery 100. Hereinafter, the temperature adjustment will also be referred to as "temperature adjustment". The cooling / warming device 800 is constituted by a battery cooling portion (battery cooling system) 801 and a battery warming portion (battery warming system) 802. The cooling / warming device 800 can be any structure that enables cooling / warming of the battery 100. The cooling / warming device 800 can be either air cooling (heat exchange using a gas as a medium) or liquid cooling (heat exchange using a liquid as a medium). The cooling / warming device 800 can also utilize waste heat of the MG 10 and the PCU 40, or heat generated due to charging and discharging of the battery 100.

[0047] In the battery 100, depending on the temperature TB of the battery 100, there is an appropriate charging power (charging current), and when charging is performed with a current exceeding the appropriate charging power, there is a possibility that the deterioration of the battery 100 will be accelerated. Also, when charging is performed with a current exceeding the power (allowable power) that the battery 100 can accept, the charging efficiency deteriorates, and the power consumption during charging deteriorates. In order to suppress the deterioration of the battery 100 and the like, if the charging power (charging current) is limited when the temperature TB is high or low, the charging time becomes long depending on the state of the temperature TB. Therefore, in the case where external charging of the battery 100 is assumed, it is preferable to adjust the temperature of the battery 100 to an appropriate temperature range in advance before charging is started.

[0048] In the past, in the electric automobile 1, there has been an HMI device 700 that displays the travelable distance that varies depending on the presence or absence of the air conditioner, based on the average speed of the electric automobile 1 and the power consumption of the air conditioner. In the electric automobile 1, there are times when power is consumed in uses other than travel, in addition to the air conditioner. For example, in the case where the charging facility is set as a destination using the navigation device 600, temperature adjustment of the battery 100 is performed in advance in order to improve the charging efficiency, and for this purpose, the cooling / warming device 800 is operated, whereby the power of the battery 100 is consumed. Therefore, as to what kind of display is made to the user of the electric automobile 1 with respect to the consumption of the battery 100, there is still room for improvement.

[0049] Therefore, the processor such as the CPU 301 of the ECU 300 or the CPU 701 of the HMI device 700 calculates a comparative index value related to the charge amount of the battery 100 in the case where the cooling / warming device 800 is operated and in the case where the cooling / warming device 800 is not operated. The processor causes the calculated comparative index value to be displayed on the touch panel display 704 of the HMI device 700.

[0050] This allows the user of electric vehicle 1 to be informed of a comparative value of the battery 100's charge level when cooling / heating device 800 is activated and when it is not activated. Cooling / heating device 800 uses the power stored in battery 100, which stores power for driving electric vehicle 1, to adjust the temperature of battery 100 in response to user operations. Consequently, information regarding the battery 100's charge level can be easily communicated to the user.

[0051] like Figure 1 As shown in FIG, the electric vehicle 1 further includes a pre-adjustment switch 304 for activating or stopping the cooling / heating device 800. When the pre-adjustment switch 304 is operated to activate the cooling / heating device 800, the temperature of the battery 100 is adjusted to a temperature range suitable for charging.

[0052] Figure 2 Flowchart showing the flow of battery display processing in this embodiment. Figure 2 The battery display process is called out from the upper processing and executed by the CPU 301 of the ECU 300 in a predetermined cycle.

[0053] The CPU 301 of the ECU 300 determines whether the display related to the stored electricity amount of the battery 100 on the instrument panel 305 is correct (see the following description). Figure 3A 、 Figure 3B as well as Figure 4A through 4D ) update cycle (S111). If it is determined that it is not a display update cycle (No in S111), CPU 301 determines whether the user has performed an operation to switch the display scheme related to the battery charge level of battery 100 (S112). If it is determined that the display switching operation has not been performed (No in S112), CPU 301 returns the executed processing to the higher-level processing from which the battery display processing was called.

[0054] On the other hand, if it is determined that the display update cycle has arrived (YES in S111) or if it is determined that a display switching operation has been performed (YES in S112), CPU 301 calculates the current SOC of battery 100 and the estimated cruising distance based on this SOC (S113). The cruising distance is, for example, the value obtained by dividing the stored power corresponding to the current SOC by the average power consumption. The average power consumption can be a catalog value or a recently learned value. When temperature control is in progress, the cruising distance is calculated as the cruising distance that takes into account the amount of power used for temperature control. Furthermore, the cruising distance can be calculated by taking into account factors that affect the cruising distance, such as the load weight of electric vehicle 1 and the temperature.

[0055] Next, CPU 301 determines whether battery 100 is currently being temperature-controlled by cooling / heating device 800 (S114). If temperature control is not currently in progress (No in S114), CPU 301 calculates the amount of power lost due to temperature control until the battery runs out of power, the corresponding decrease in SOC, and the corresponding decrease in cruising range (S115). Note that temperature control may increase the amount of power available from battery 100. Consequently, the deduction of the power used for temperature control from the start of temperature control until the battery runs out of power is considered to be an increase in the amount of power used for temperature control.

[0056] On the other hand, if it is determined that temperature control is in progress (YES in S114), CPU 301 calculates the amount of power that would have been added if temperature control had been stopped until the battery ran out of power, the corresponding increase in SOC, and the corresponding increase in cruising range (S116). It should be noted that in some cases, the amount of power that can be output from battery 100 does not increase due to the non-execution of temperature control. Therefore, when deducting the amount of power not used for temperature control, the amount of power not used for temperature control if temperature control was stopped until the battery ran out of power is reduced.

[0057] After S115 or S116, CPU 301 determines whether a destination has been set in navigation device 600 (S117). If the destination has been set (YES in S117), CPU 301 calculates the estimated SOC upon arrival at the destination, both with and without temperature control, and the cruising distance corresponding to the SOC (S118).

[0058] If it is determined that the destination has not been set (No in S117), or after S118, CPU 301 determines whether the display relating to the charge level of battery 100 is being displayed on instrument panel 305 using the remaining charge display scheme. Alternatively, CPU 301 determines whether the display relating to the charge level of battery 100 has been switched to the remaining charge display scheme (S121). If CPU 301 determines that the display is being displayed using the remaining charge display scheme or has been switched to the remaining charge display scheme (Yes in S121), CPU 301 uses the calculation results of S113, S115, and S116 to display the display relating to the charge level of battery 100 on instrument panel 305 using the remaining charge display scheme (S122).

[0059] Figure 3A as well as Figure 3B 1 is a diagram showing a scheme of a remaining charge display related to the charge level of the battery 100 on the instrument panel 305 in this embodiment. Figure 3AAs shown in FIG, in the remaining battery display scheme, the current SOC is displayed by a bar graph scheme represented by thin hatching. At the same time, the SOC reduced (or increased) due to temperature adjustment is displayed by a bar graph scheme represented by thick hatching.

[0060] It should be noted that, as a modified example, Figure 3B As shown in FIG, the current SOC is displayed in the upper section by a thinly hatched bar graph. At the same time, the SOC obtained by subtracting the decreased (or increased) SOC from the current SOC can be displayed in the lower section by a thinly hatched bar graph.

[0061] Return to Figure 2 If CPU 301 determines that the remaining charge display scheme is not being used and has not been switched to the remaining charge display scheme (No in S121), CPU 301 determines whether the display related to the battery 100's charge level is being displayed on instrument panel 305 using the SOC display scheme. Alternatively, CPU 301 determines whether the display related to the battery 100's charge level has been switched to the SOC display scheme (S123). If CPU 301 determines that the display is being displayed using the SOC display scheme or has been switched to the SOC display scheme (Yes in S123), CPU 301 uses the calculation results of S113, S115, and S116 to display the battery 100's charge level on instrument panel 305 using the SOC display scheme (S124).

[0062] Figure 4A through 4D 1 is a diagram showing a scheme of the SOC display related to the storage capacity of the battery 100 on the instrument panel 305 in this embodiment. Figure 4A As shown in FIG, when the temperature of the battery 100 is not being adjusted, in the SOC display scheme, the current SOC is displayed as a numerical value ( Figure 4A On the other hand, the current SOC ( Figure 4A 82% in the case of temperature regulation) minus the SOC reduction (or increase) due to temperature regulation ( Figure 4A 9%) as the SOC value when starting temperature control, and the value ( Figure 4A ) is displayed (the value is "73%" in the figure).

[0063] like Figure 4B As shown in FIG, when the battery 100 is in temperature control, in the SOC display scheme, the current SOC ( Figure 4B 82% in the case of temperature regulation) minus the SOC reduction (or increase) due to temperature regulation ( Figure 4B9%) as the SOC value when continuing the temperature control, and the left side of the display frame is displayed with the value ( Figure 4B On the other hand, the current SOC is displayed as a value when the temperature control is stopped, and the value ( Figure 4B ) is displayed.

[0064] It should be noted that in Figure 4C Shown in Figure 4A When the battery 100 is not in temperature control, in the SOC display scheme, Figure 4A Similarly, as the value when the temperature control is stopped, the current SOC is displayed on the left side of the display frame with a value ( Figure 4C On the other hand, Figure 4A Different, the SOC that decreases (or increases) due to temperature adjustment can be used as the value when temperature adjustment starts, and the value ( Figure 4C ) is displayed as "-9%".

[0065] And, in Figure 4D Shown in Figure 4B In the case of the temperature regulation of the battery 100, in the SOC display scheme, Figure 4B Similarly, as the value for continuing the temperature control, the current SOC ( Figure 4D 82% in the case of temperature regulation) minus the SOC reduction (or increase) due to temperature regulation ( Figure 4D 9%), the SOC after the display is displayed with a numerical value ( Figure 4D On the other hand, Figure 4B Differently, as the numerical value when the thermostat is stopped, the SOC that increases (or decreases) due to stopping the thermostat can be displayed as a numerical value ( Figure 4D ) is displayed as “+9%” in the figure.

[0066] Return to Figure 2If the CPU 301 determines that the display is not being displayed using the SOC display scheme and has not switched to the SOC display scheme (No in S123), the CPU 301 determines whether the display related to the battery 100's charge level is being displayed on the instrument panel 305 using the cruising distance display scheme. Alternatively, the CPU 301 determines whether the display related to the battery 100's charge level has been switched to the cruising distance display scheme (S125). If the CPU 301 determines that the display is being displayed using the cruising distance display scheme or has switched to the cruising distance display scheme (Yes in S125), the CPU 301 uses the calculation results of S113, S115, and S116 to display the battery 100's charge level on the instrument panel 305 using the cruising distance display scheme (S126).

[0067] Figure 5A through 5D 1 is a diagram showing a scheme of a cruising range display related to the amount of charge in the battery 100 on the instrument panel 305 in this embodiment. Figure 5A As shown in FIG, when the battery 100 is not being temperature-controlled, in the cruising range display scheme, the current cruising range is displayed as a numerical value ( Figure 5A On the other hand, as the value when the temperature adjustment starts, the current cruising distance ( Figure 5A 340km) minus the range reduced (or increased) due to temperature adjustment ( Figure 5A The cruising distance after 30km is displayed in the right side of the display box with a value ( Figure 5A ) is displayed (the value is "310km" in the figure).

[0068] like Figure 5B As shown in FIG, when the temperature of the battery 100 is being adjusted, as a value for continuing the temperature adjustment, in the cruising distance display scheme, the current cruising distance ( Figure 5B 340km) minus the range reduced (or increased) due to temperature adjustment ( Figure 5B The cruising distance after 30km is displayed in the left side of the display box with a value ( Figure 5B On the other hand, the current cruising distance is displayed as a value when the temperature control is stopped, and the value ( Figure 5B ) is displayed.

[0069] It should be noted that in Figure 5C Shown in Figure 5A In the case where the battery 100 is not in temperature regulation, in the scheme of displaying the cruising range,Figure 5A As a value in the case of continuing the temperature adjustment, the current range is displayed on the left side in the display frame by a value (the value of "340 km" in Figure 5C On the other hand, unlike the Figure 5A range reduced (or increased) due to the temperature adjustment can be displayed on the right side in the display frame by a value (the value of "-30 km" in Figure 5C as a value in the case of starting the temperature adjustment.

[0070] Also, a modification of Figure 5D is shown in Figure 5B In the case of being in the temperature adjustment of the storage battery 100, in the range display scheme, as in Figure 5B As a value in the case of continuing the temperature adjustment, the current range (340 km in Figure 5D is reduced (or increased) due to the temperature adjustment (30 km in Figure 5D is displayed on the left side in the display frame by a value (the value of "310 km" in Figure 5D On the other hand, unlike the Figure 5B range increased (or reduced) by stopping the temperature adjustment can be displayed on the right side in the display frame by a value (the value of "+30 km" in Figure 5D as a value in the case of stopping the temperature adjustment.

[0071] Returning to Figure 2 In the case where the CPU 301 determines that the display is not being performed in the range display scheme and that the range display scheme has not been switched (NO in S125), the CPU 301 determines whether or not the display relating to the state of charge of the storage battery 100 is being displayed on the instrument panel 305 in the arrival time display scheme. Alternatively, the CPU 301 determines whether or not the display relating to the state of charge of the storage battery 100 has been switched to the arrival time display scheme (S127). In the case where the CPU 301 determines that the display is being performed in the arrival time display scheme or that the display has been switched to the arrival time display scheme (YES in S127), the CPU 301 displays the display relating to the state of charge of the storage battery 100 on the instrument panel 305 in the arrival time display scheme using the calculation result of S118 (S128).

[0072] Figure 6A and Figure 6B are diagrams showing the arrival time display scheme of the display relating to the state of charge of the storage battery 100 on the instrument panel 305 in the present embodiment. As shown in Figure 6A In the arrival time display scheme, the SOC in the case of not adjusting the temperature at the time of arrival at the destination set in the navigation device 600 is displayed on the left side in the display frame by a value (the value of "340 km" inFigure 6A the right side of the display frame with a value (e.g., "25%" in FIG. 6) in the case where the SOC at the time of arrival at the destination set in the navigation device 600 is predicted with the temperature adjustment. On the other hand, the cruising distance in the case where the SOC at the time of arrival at the destination set in the navigation device 600 is predicted without the temperature adjustment can be displayed with a value (e.g., "25km" in FIG. 6) in the left side of the display frame. Figure 6A

[0073] Note that, as a modification of the above-described embodiment, in the case where the display at the time of arrival is displayed as shown in FIG. 7, the cruising distance in the case where the SOC at the time of arrival at the destination set in the navigation device 600 is predicted without the temperature adjustment is displayed with a value (e.g., "16%" in FIG. 7) in the left side of the display frame. Figure 6A Figure 6B Figure 6B the right side of the display frame with a value (e.g., "25%" in FIG. 6) in the case where the SOC at the time of arrival at the destination set in the navigation device 600 is predicted with the temperature adjustment. On the other hand, the cruising distance in the case where the SOC at the time of arrival at the destination set in the navigation device 600 is predicted without the temperature adjustment can be displayed with a value (e.g., "25km" in FIG. 6) in the left side of the display frame. Figure 6B

[0074] Returning to Figure 2 After S122, after S124, after S126, after S128, or in the case where the CPU 301 determines that the display is not performed with the display at the time of arrival and is not switched to the display at the time of arrival (NO in S127), the CPU 301 returns the processing performed to the processing of the upper level of the call source of the battery display processing.

[0075] Modification

[0076] (1) In the above-described embodiment, as shown in FIG. 6, the display scheme on the instrument panel 305 related to the charge amount of the storage battery 100 is switched to the remaining amount display scheme, the SOC display scheme, the cruising distance display scheme, and the display at the time of arrival during the travel. However, it is not limited thereto, and at least two or more of the four display schemes can be selectively switched. Figure 2 Also, during the travel of the electric automobile 1 or in the case where the destination of the electric automobile 1 is set, as the display scheme on the instrument panel 305 related to the charge amount of the storage battery 100, the cruising distance display scheme is preferentially displayed (see

[0077] , Figure 5A through 5D ). On the other hand, during the external charging of the storage battery 100 or in the case where the connector 420, 520 for charging is connected to the electric automobile 1, the SOC display scheme can be preferentially displayed (see Figure 6B , Figure 3A , Figure 3B , Figure 4A through 4D , Figure 6A ​​​​Prioritizing the first display scheme over the second display scheme may mean that only the first display scheme can be displayed. Prioritizing the first display scheme over the second display scheme may mean that the first display scheme is displayed before the second display scheme. Prioritizing the first display scheme over the second display scheme may mean that the first display scheme is normally displayed, while the second display scheme is displayed when a predetermined user operation is performed.

[0078] (2) In the aforementioned embodiment, the CPU 301 of the ECU 300 executes Figure 2 However, the present invention is not limited thereto, and the processor that executes the battery display process may be another processor, such as the CPU 701 of the HMI device 700 or the CPU 601 of the navigation device 600.

[0079] (3) In the aforementioned embodiment, the display related to the stored power level of the battery 100 is displayed on the instrument panel 305. However, the present invention is not limited thereto, and the display related to the stored power level of 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.

[0080] (4) The aforementioned embodiments can be understood as disclosure of a display device such as the instrument panel 305, the touch panel display 704 of the HMI device 700, or the touch panel display of the user terminal 3. The aforementioned embodiments can be understood as disclosure of a vehicle such as the electric vehicle 1 that includes such a display device. The aforementioned embodiments can be understood as disclosure of a method or program for displaying information related to the stored charge of the battery 100 in a display device or vehicle.

[0081] Summarize

[0082] (1) If Figure 1 As shown in FIG, the electric vehicle 1 is a vehicle that notifies the user of information related to the power used for driving, and includes a processor, a display device, a battery 100 that stores the power used for driving, and a cooling / heating device 800 that uses the power stored in the battery 100 and adjusts the temperature of the battery 100 according to the user's operation. The processor is, for example, the CPU 301 of the ECU 300, the CPU 701 of the HMI device 700, the CPU 601 of the navigation device 600, and the CPU of the user terminal 3. The display device is, for example, the instrument panel 305, the touch panel display of the HMI device 700, and the touch panel display of the user terminal 3. Figure 2 through 6BAs shown in FIG, the processor calculates a comparison index value related to the storage capacity of the battery 100 when the cooling / heating device 800 is operated and when the cooling / heating device 800 is not operated (for example, S113, S115, S116, S118), and displays the calculated comparison index value on the display device (for example, S122, S124, S126, S128, see FIG). Figure 3A through 6B ).

[0083] This allows the user of electric vehicle 1 to be informed of a comparative value of the battery 100's charge level when cooling / heating device 800 is activated and when it is not activated. Cooling / heating device 800 uses the power stored in battery 100, which stores power for driving electric vehicle 1, to adjust the temperature of battery 100 in response to user operations. Consequently, information regarding the battery 100's charge level can be easily communicated to the user.

[0084] (2) If Figure 6A as well as Figure 6B As shown in , the comparative index value may be a parameter (eg, SOC, cruising distance) related to the stored electricity level at the time of arrival at the destination when the cooling / heating device 800 is operated and when the cooling / heating device 800 is not operated.

[0085] This allows the user to easily understand information on the amount of stored electricity upon arrival at the destination when the cooling / heating device 800 is operated and when the cooling / heating device 800 is not operated.

[0086] (3) If Figure 2 through 5D As shown in , the comparative index value may be a parameter (eg, SOC, cruising distance) corresponding to the amount of stored electricity reduced by use of cooling / warming device 800 until travel becomes impossible using the power of battery 100 .

[0087] Thus, information on the amount of stored electricity that is reduced by use of cooling / warming device 800 until the vehicle becomes unable to travel using the power of battery 100 can be easily communicated to the user.

[0088] (4) If Figure 2 through 6B As shown in Modification (1), while the electric vehicle 1 is traveling or when the destination of the electric vehicle 1 is set, a value related to the cruising distance is displayed as a comparative index value with priority. While the battery 100 is being externally charged or when the charging connector 420 or 520 is connected to the electric vehicle 1, a value related to the SOC can be displayed as a comparative index value with priority.

[0089] Thus, the value related to the cruising distance or the value related to the SOC can be selectively communicated to the user according to the situation. As a result, the convenience of the user can be improved.

[0090] The embodiments disclosed herein should be considered in a descriptive sense only and not limiting. Descriptions of features or aspects within each embodiment should typically be considered as being applicable to other embodiments. Thus, words such as "one," "another," "at least one," "but not limited to" or "in one embodiment" for describing various embodiments are to be understood to be used interchangeably. Similarly, words such as "can" or "may" are to be understood to present the possibility of an feature, a structure, or their combination, being present or be used. Accordingly, the term "comprising" does not exclude other features or steps than those listed in a claim. Furthermore, the term "coupled" should not be interpreted as being restricted to a direct coupling or connection between the items or devices.

Claims

1. An electric automobile that informs a user of information related to electric power for traveling, the electric automobile comprising: a processor; a display device; an electric storage device that stores electric power for traveling; and a temperature adjustment device that adjusts a temperature of the electric storage device in accordance with an operation of the user using electric power stored in the electric storage device, the processor calculating a comparison index value related to an amount of stored electric power of the electric storage device in a case where the temperature adjustment device is caused to act and in a case where the temperature adjustment device is not caused to act, and causing the calculated comparison index value to be displayed on the display device.

2. A display device that informs a user of information related to electric power for traveling of an electric automobile, wherein the display device displays a comparison index value related to an amount of stored electric power of an electric storage device that stores electric power for traveling in a case where a temperature adjustment device that adjusts a temperature of the electric storage device is caused to act and in a case where the temperature adjustment device is not caused to act.

3. The display device according to claim 2, wherein the comparison index value is a parameter related to the amount of stored electric power at arrival at a destination in the case where the temperature adjustment device is caused to act and in the case where the temperature adjustment device is not caused to act.

4. The display device according to claim 2, wherein the comparison index value is a parameter corresponding to the amount of stored electric power that is reduced due to use of the temperature adjustment device until electric power of the electric storage device is unable to be used for traveling.

5. The display device according to any one of claims 2 to 4, wherein in traveling of the electric automobile or in a case where a destination of the electric automobile is set, as the comparison index value, a value related to a distance to be traveled is preferentially displayed, and in external charging of the electric storage device or in a case where a charging plug is connected to the electric automobile, as the comparison index value, a value related to SOC is preferentially displayed. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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