Vehicle mode control device, vehicle mode control method, and computer program

Abstract

This system prevents the vehicle mode, which maintains the operation of the air conditioner and display while the vehicle is stationary, from being terminated against the vehicle user's will. [Solution] The vehicle mode control device includes a mode setting unit 34 that sets the vehicle mode to a state-holding mode based on the user's instructions for the vehicle 1, in which power is supplied to the vehicle's air conditioner 7 and the in-vehicle display 6, but power is not supplied to the vehicle's drivetrain; and a threshold setting unit 35 that sets a threshold for a parameter related to the remaining charge of the vehicle's main battery 14 based on user input. The mode setting unit terminates the state-holding mode when the parameter drops to the threshold.

Description

Technical Field

[0001] The present invention relates to a vehicle mode control apparatus, a vehicle mode control method, and a computer program.

Background Art

[0002] Patent Document 1 discloses that, in order to allow a vehicle user to sleep comfortably in the vehicle compartment, when a nap state is detected, an air conditioner of the vehicle is controlled to be in a state suitable for a nap.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] Incidentally, even in situations other than taking a nap in the vehicle compartment, there is a need for maintaining the operation of the air conditioner and the display in a stopped vehicle. For this reason, it is desirable that a vehicle mode for maintaining the operation of the air conditioner and the display can be selected by the user of the vehicle.

[0005] In this case, in order to avoid depletion of the vehicle's power due to continuous use of the air conditioner and the display, it is conceivable to terminate such vehicle mode when the remaining charge of the vehicle battery becomes low. However, when such termination control is performed, there is a risk that such vehicle mode may be terminated against the user's intention.

[0006] Therefore, in view of the above problem, an object of the present invention is to suppress termination of a vehicle mode that maintains operation of an air conditioner and a display while the vehicle is stopped, against the intention of the vehicle user.

Means for Solving the Problem

[0007] The gist of this disclosure is as follows:

[0008] (1) A vehicle mode control device for controlling the mode of a vehicle, comprising: a mode setting unit that sets the mode of the vehicle to a state-holding mode that maintains a vehicle state in which power is supplied to the vehicle's air conditioner and the in-vehicle display, but not to the vehicle's drive system, based on instructions from the vehicle's user; and a threshold setting unit that sets a threshold for a parameter relating to the remaining charge of the vehicle's main battery based on input from the user, wherein the mode setting unit terminates the state-holding mode when the parameter falls to the threshold.

[0009] (2) The vehicle mode control device described in (1) above, wherein the parameter is the SOC of the main battery.

[0010] (3) The vehicle mode control device described in (1) above, wherein the parameter is the mileage of the vehicle.

[0011] (4) The vehicle mode control device according to any one of (1) to (3) above, wherein the threshold setting unit displays the parameter operation unit into which the threshold is input on the display before the state holding mode is started.

[0012] (5) The vehicle mode control device according to (4) above, wherein the threshold setting unit displays the parameter operation unit on the display together with the state holding mode start button.

[0013] (6) The vehicle mode control device according to (4) or (5) above, wherein the threshold setting unit displays the value previously set as the threshold as the initial value of the threshold in the parameter operation unit.

[0014] (7) The vehicle mode control device according to any one of (1) to (6) above, wherein the threshold setting unit prohibits input of a value greater than or equal to the current value of the parameter as the threshold while the state holding mode is being executed.

[0015] (8) The vehicle mode control device according to any one of (1) to (7) above, wherein the threshold setting unit calculates an estimated value of the duration for which the state holding mode can be continued based on the current value of the parameter and the threshold, and displays the estimated value on the display.

[0016] (9) The vehicle mode control device according to any one of (1) to (8) above, wherein the mode setting unit temporarily sets the mode of the vehicle to a transition mode before turning off the power of the vehicle when the state holding mode ends, and in the transition mode, supplies power to the display while turning off the display.

[0017] (10) The vehicle mode control device according to any one of (1) to (9) above, wherein the threshold setting unit displays the current value of the parameter and the threshold on the display when the state holding mode is being executed.

[0018] (11) A vehicle mode control method performed by a computer, comprising: setting the mode of the vehicle to a state-holding mode that maintains a vehicle state in which power is supplied to the vehicle's air conditioner and the in-vehicle display, but not to the vehicle's drivetrain, based on instructions from the vehicle's user; setting a threshold value for a parameter relating to the remaining charge of the vehicle's main battery, based on input from the user; and terminating the state-holding mode when the parameter falls to the threshold value.

[0019] A computer program that causes a computer to execute: setting a mode of the vehicle to a state holding mode that maintains a vehicle state in which power is supplied to an air conditioner of the vehicle and a display in the vehicle based on an instruction from a user of the vehicle, but no power is supplied to a drive system of the vehicle; setting a threshold value of a parameter related to a remaining power storage amount of a main battery of the vehicle based on an input by the user; and terminating the state holding mode when the parameter decreases to the threshold value. [Effects of the Invention]

[0020] According to the present disclosure, it is possible to suppress termination of a vehicle mode that maintains operation of an air conditioner and a display against the intention of a user of the vehicle while the vehicle is stopped. [Brief Description of Drawings]

[0021] [Figure 1] FIG. 1 is a schematic configuration diagram of a connected system including a vehicle equipped with a vehicle mode control device according to the present embodiment. [Figure 2] FIG. 2 is a schematic configuration diagram of a vehicle mode control system including a vehicle mode control device according to an embodiment of the present invention. [Figure 3] FIG. 3 is a diagram schematically showing an interior of the vehicle in front of a driver's seat and a passenger seat. [Figure 4] FIG. 4 is a diagram schematically showing a flow of electric power between electrical components of the vehicle. [Figure 5] FIG. 5 is a diagram showing transition of power states in a vehicle. [Figure 6] FIG. 6 is a functional block diagram of a processor of an ECU. [Figure 7] FIG. 7 shows an example of a confirmation screen for confirming whether the state holding mode can be terminated. [Figure 8] FIG. 8 shows an example of a confirmation screen for confirming whether transition of a power state is allowed. [Figure 9]Figure 9 is a flowchart showing the control routine for the mode start process in the first embodiment of the present invention. [Figure 10] Figure 10 shows an example of the settings screen for the state retention mode. [Figure 11] Figure 11 shows an example of the execution screen in state hold mode. [Figure 12] Figure 12 shows another example of the state retention mode settings screen. [Figure 13] Figure 13 shows another example of the state retention mode settings screen. [Figure 14] Figure 14 is a flowchart showing the control routine for mode termination processing in the second embodiment of the present invention. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, similar components will be given the same reference numerals.

[0023] <First Embodiment> Figure 1 is a schematic diagram of a connected system 1000 including a vehicle 1 equipped with a vehicle mode control device according to this embodiment. The connected system 1000 comprises a vehicle 1, a mobile terminal 200, and a server 300. The vehicle 1 and the mobile terminal 200 communicate with the server 300 via a wireless base station 400 and a communication network 500, respectively. In this embodiment, the vehicle 1 is a four-wheeled automobile.

[0024] The mobile terminal 200 is owned by the user of vehicle 1 and includes, for example, at least one of a smartphone, tablet, smartwatch, and smart glasses. The mobile terminal 200 has a processor that performs various processing on the mobile terminal 200, input devices (touch panel, operation buttons, microphone, etc.), output devices (display, speaker, etc.), and a communication module. The communication module of the mobile terminal 200 connects the mobile terminal 200 to the communication network 500 via the wireless base station 400 by accessing the wireless base station 400. Communication between the mobile terminal 200 and the wireless base station 400 is performed based on known wireless communication standards (e.g., 3G, LTE, 4G, 5G, 6G, etc.).

[0025] Server 300 is located outside of vehicle 1 and includes a communication interface, storage, memory, processor, etc. Server 300 may be composed of multiple computers. Server 300 is operated, for example, by the manufacturer of vehicle 1 and is also referred to as the center.

[0026] Figure 2 is a schematic diagram of a vehicle mode control system 100 including a vehicle mode control device according to an embodiment of the present invention. The vehicle mode control system 100 is mounted on a vehicle 1.

[0027] As shown in Figure 2, the vehicle mode control system 100 includes a wide-area communication module 2, a short-range communication module 3, a brake operation detection sensor 4, a start switch 5, a human-machine interface (HMI) 6, an air conditioner 7, a power control unit (PCU) 8, a battery management system (BMS) 9, and an electronic control unit (ECU) 30. The wide-area communication module 2, the short-range communication module 3, the brake operation detection sensor 4, the start switch 5, the HMI 6, the air conditioner 7, the PCU 8, and the BMS 9 are electrically connected to the ECU 30 via an in-vehicle network compliant with standards such as CAN (Controller Area Network) or Ethernet.

[0028] The ECU 30 performs various controls on the vehicle 1. As shown in Figure 2, the ECU 30 includes a communication interface 31, a memory 32, and a processor 33. The communication interface 31 and the memory 32 are connected to the processor 33 via signal lines. In this embodiment, one ECU 30 is provided, but multiple ECUs may be provided for each function. Furthermore, the communication interface 31, the memory 32, and the processor 33 may be configured as a single integrated circuit, or they may be configured as separate circuits.

[0029] The communication interface 31 has an interface circuit for connecting the ECU 30 to the in-vehicle network. The ECU 30 is connected to other in-vehicle equipment via the communication interface 31. In this embodiment, the communication interface 31 transmits signals received from the wide-area communication module 2, the short-range communication module 3, the brake operation detection sensor 4, the start switch 5, the HMI 6, the PCU 8, and the BMS 9 to the processor 33. The communication interface 31 also transmits signals output from the processor 33 to the wide-area communication module 2, the short-range communication module 3, the HMI 6, the air conditioner 7, the PCU 8, and the BMS 9.

[0030] Memory 32 includes, for example, volatile semiconductor memory (e.g., DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), etc.) and non-volatile semiconductor memory (e.g., ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), flash memory, etc.). Memory 32 stores temporary data, computer programs used for various processes by the processor 33 (control programs for the ECU 30), ECU 30 setting data, log data, vehicle information, etc. Memory 32 is an example of a storage unit.

[0031] The processor 33 has one or more CPUs (Central Processing Units) and their peripheral circuits. The processor 33 executes computer programs stored in the memory 32. The processor 33 may also have other arithmetic circuits such as a logic unit, a numerical unit, or a graphics processing unit. The following describes the in-vehicle components connected to the ECU 30.

[0032] The wide-area communication module 2 enables wide-area wireless communication between vehicle 1 and an external location (e.g., server 300). The wide-area communication module 2 connects vehicle 1 to the communication network 500 via the wireless base station 400 by accessing the wireless base station 400. Communication between vehicle 1 and the wireless base station 400 is performed based on known wireless communication standards (e.g., 3G, LTE (Long Term Evolution), 4G, 5G, 6G, etc.). The wide-area communication module 2 is, for example, a data communication module (DCM).

[0033] The short-range communication module 3 enables short-range wireless communication between vehicle 1 and the user's mobile terminal 200. The short-range communication module is a wireless module compliant with short-range communication standards such as BLE (Bluetooth Low Energy®) and NFC (Near Field Communication). The mobile terminal 200 can function as a digital key for vehicle 1 by communicating directly with vehicle 1 via the short-range communication module 3. In other words, the user of vehicle 1 can control the door locks of vehicle 1 using the mobile terminal 200.

[0034] The brake operation detection sensor 4 is installed on the brake pedal 41 of the vehicle 1 and detects the operation of the brake pedal 41 by the user of the vehicle 1. For example, the brake operation detection sensor 4 can be configured as a pressure sensor that detects the pressure applied to the brake pedal 41, an angle sensor that detects the rotation angle or displacement of the brake pedal 41, or an electrical switch that generates an on / off signal in response to the depressing operation of the brake pedal 41. The brake operation detection sensor 4 may also be configured as a non-contact sensor such as an optical sensor or a magnetic sensor. The output of the brake operation detection sensor 4 is transmitted to the ECU 30.

[0035] Figure 3 is a schematic diagram showing the interior of vehicle 1 in front of the driver's and passenger's seats. Figure 3 shows a right-hand drive vehicle 1. As shown in Figure 3, the start switch 5 is located on the dashboard 22 below the windshield 21. For example, the start switch 5 is located near the driver's seat so that it can be operated by the user of vehicle 1 (e.g., the driver), specifically near the steering wheel 23 (to the left of the steering wheel 23 in the example in Figure 3). The start switch 5 is, for example, a push-button switch. When the start switch 5 is pressed by the user of vehicle 1, it outputs a signal corresponding to the user's pressing operation. The output of the start switch 5 is transmitted to the ECU 30.

[0036] The HMI 6 is installed inside the vehicle and facilitates the exchange of information between vehicle 1 and its user. The HMI 6 includes an input device that receives input from the user of vehicle 1 and an output device that notifies the user of vehicle 1. The input device includes, for example, at least one of a touch panel, operation buttons, operation switches, and a microphone. Information entered into the HMI 6's input device by the user of vehicle 1 is transmitted to the ECU 30. The output device includes at least one of a display device (e.g., a display), a warning light, a speaker, a buzzer, and a vibration unit. The HMI 6's output device notifies the user of vehicle 1 of information corresponding to signals transmitted from the ECU 30.

[0037] As shown in Figure 3, in this embodiment, the HMI 6 includes a multimedia display (hereinafter referred to as "MM display") 61, a meter display 62, a left-side operation display 63, and a right-side operation display 64. Each of these displays is installed inside the vehicle (specifically near the driver's seat) so that it can be seen by the user of the vehicle 1, and displays various information to the user of the vehicle 1 based on signals transmitted from the ECU 30.

[0038] In this embodiment, the MM display 61 is integrated into the center console, specifically the portion of the dashboard 22 between the driver's and passenger's seats. In this case, the MM display 61 is also referred to as the center display. The MM display 61 is the largest display in the vehicle's interior and displays multimedia information, map information, screens for various settings of the vehicle 1, and the like. The MM display 61 is configured as a touch-panel liquid crystal display (LCD) or organic electroluminescent (EL) display that can be operated by the user of the vehicle 1. Therefore, the MM display 61 functions as both an input and output device.

[0039] The meter display 62 is positioned in a location easily visible to the user of vehicle 1 while the vehicle 1 is being driven. Specifically, the meter display 62 is integrated as an instrument panel into the dashboard 22 in front of the steering wheel 23, i.e., the dashboard 22 in front of the driver's seat. The meter display 62 displays status information of vehicle 1, specifically information necessary for driving vehicle 1, such as vehicle speed, the SOC (State of Charge) of the main battery (described later), and warning lights. The meter display 62 functions as an output device and is configured as, for example, an LCD or organic EL display. The meter display 62 may also be configured as a touch panel type LCD or organic EL display that can be operated by the user and may function as both an input and output device.

[0040] The left-side operation display 63 is positioned to be easily operated by the user of vehicle 1 with their left hand while driving vehicle 1, and the right-side operation display 64 is positioned to be easily operated by the user of vehicle 1 with their right hand while driving vehicle 1. The left-side operation display 63 and the right-side operation display 64 are positioned on either side of the meter display 62, and are positioned symmetrically with respect to a line that divides the steering wheel 23 into left and right halves.

[0041] The left-side operation display 63 is positioned to the left of the steering wheel 23, adjacent to the meter display 62. In this embodiment, the left-side operation display 63 displays a multimedia operation screen (e.g., an audio settings screen). The left-side operation display 63 is configured as a touch-panel type LCD or organic EL display that can be operated by the user of the vehicle 1. Therefore, the left-side operation display 63 functions as both an input and output device.

[0042] The right-side operation display 64 is positioned to the right of the steering wheel 23, adjacent to the meter display 62. In this embodiment, the right-side operation display 64 displays the operation screen for driver assistance functions (for example, the setting screen for Adaptive Cruise Control (ACC)). The right-side operation display 64 is configured as a touch-panel type LCD or organic EL display that can be operated by the user of the vehicle 1. Therefore, the right-side operation display 64 functions as both an input and output device.

[0043] In this embodiment, the left-side operation display 63 is connected to the left end of the meter display 62, and the right-side operation display 64 is connected to the right end of the meter display 62. That is, the left-side operation display 63 and the right-side operation display 64 are integrally formed with the meter display 62. However, the left-side operation display 63 and the right-side operation display 64 may each be separate from the meter display 62.

[0044] The air conditioner (hereinafter referred to as "air conditioner") 7 includes an electric compressor and provides cooling and heating functions. When providing the cooling function, the air conditioner 7 lowers the temperature inside the vehicle by a heat exchange process using a refrigerant, and when providing the heating function, it raises the temperature inside the vehicle by heat pump technology.

[0045] As shown in Figure 2, the PCU8 and BMS9 are electrically connected and can communicate with each other using communication protocols such as CAN. The configuration and functions of the PCU8 and BMS9 will be described with reference to Figure 4.

[0046] Figure 4 is a schematic diagram showing the flow of power between the electrical components of vehicle 1. As shown in Figure 4, vehicle 1 further comprises a motor 10, a reduction gear 11, an axle 12, wheels 13, a main battery 14, a charging port 15, a charger 16, an auxiliary battery 17, auxiliary components 18, an auxiliary relay 19, and a main relay 20.

[0047] In this embodiment, vehicle 1 is a so-called electric vehicle (BEV: Battery Electric Vehicle), and only the motor 10 functions as the drive system for vehicle 1. The motor 10 is connected to a reduction gear 11, and the output of the motor 10 is supplied to the reduction gear 11. The output of the motor 10 supplied to the reduction gear 11 is transmitted to the wheels 13 via the axle 12, driving the wheels 13. Therefore, the motor 10 can output power for the vehicle 1 to move.

[0048] The main battery 14 is a rechargeable secondary battery, consisting of, for example, a lithium-ion battery, a nickel-metal hydride battery, a solid-state battery, or a sodium-ion battery. The main battery 14 is a high-voltage battery and outputs high-voltage (e.g., 200V to 800V) DC power. The main battery 14 is charged by power supplied from an external power source such as a household power supply or a charging station, or by regenerative power generated when the vehicle 1 decelerates. The charging port 15 is configured to receive power from an external power source, and the charger 16 converts the power supplied from the external power source to the charging port 15 into power that can be supplied to the main battery 14. The main battery 14 is also referred to as the drive battery or high-voltage battery.

[0049] When the motor 10 outputs power for driving, the power stored in the main battery 14 is supplied to the motor 10 via the PCU 8. In other words, the main battery 14 functions as the power source for the vehicle 1. The main battery 14 is also connected to the air conditioner 7, and the electric compressor of the air conditioner 7 is operated by the high-voltage power supplied from the main battery 14.

[0050] The BMS9 monitors and manages the main battery 14 and includes a sensor module, a control circuit, etc. The sensor module includes a voltage sensor that detects the voltage of each cell of the main battery 14, a current sensor that detects the charging and discharging current of the main battery 14, and a temperature sensor that detects the temperature of the main battery 14. The control circuit performs state estimation of the main battery 14, charge and discharge control, etc. For example, the control circuit calculates the SOC (State of Charge), SOH (State of Health), and SOP (State of Power) of the main battery 14 based on the output of the sensor module.

[0051] The auxiliary battery 17 is a rechargeable secondary battery, consisting of, for example, a lead-acid battery or a lithium-ion battery. The auxiliary battery 17 is a low-voltage battery and outputs low-voltage (e.g., 12V) DC power. That is, the auxiliary battery 17 outputs power at a lower voltage than the main battery 14. The auxiliary battery 17 is charged by power supplied from the main battery 14. The auxiliary battery 17 is also called a low-voltage battery.

[0052] The auxiliary battery 17 is connected to the auxiliary components 18, which are powered by low-voltage electricity supplied from the auxiliary battery 17. The auxiliary components 18 include communication modules such as the wide-area communication module 2 and the short-range communication module 3, sensors such as the brake operation detection sensor 4, a start switch 5, an HMI 6, lighting devices (headlights, taillights, etc.), power windows, etc.

[0053] An auxiliary relay 19 is provided between the auxiliary battery 17 and the auxiliary components 18. That is, the auxiliary components 18 are connected to the auxiliary battery 17 via the auxiliary relay 19. When the auxiliary relay 19 is closed, the auxiliary battery 17 energizes the auxiliary components 18. As a result, power can be supplied from the auxiliary battery 17 to the auxiliary components 18.

[0054] The PCU8 controls the power of the vehicle 1 and includes an inverter, a DC-DC converter, a boost converter, a control circuit, etc. The inverter is connected to the main battery 14 and the motor 10, and the main battery 14 supplies power to the motor 10 via the inverter. When power is supplied from the main battery 14 to the motor 10, the inverter converts the DC power supplied from the main battery 14 to AC power. The inverter also controls the rotational speed and output torque of the motor 10 by adjusting the amount and frequency of the AC power supplied to the motor 10. On the other hand, when regenerative power is supplied from the motor 10 to the main battery 14, the inverter converts the AC power supplied from the motor 10 to DC power.

[0055] The DC-DC converter is connected to the main battery 14 and the auxiliary battery 17, and the main battery 14 supplies power to the auxiliary battery 17 via the DC-DC converter. When power is supplied from the main battery 14 to the auxiliary battery 17, the DC-DC converter converts high-voltage power (e.g., 200V to 800V) to low-voltage power (e.g., 12V). The boost converter boosts the output of the main battery 14 as needed. The control circuit performs inverter control, regenerative braking control, etc.

[0056] A main relay 20 is provided between the main battery 14 and the PCU 8. That is, the PCU 8 is connected to the main battery 14 via the main relay 20. When the main relay 20 is closed, the main battery 14 is energized to the PCU 8. As a result, power can be supplied from the main battery 14 to the PCU 8. When power is supplied from the main battery 14 to the PCU 8, the DC-DC converter in the PCU 8 operates, and power can be supplied from the main battery 14 to the auxiliary battery 17 via the PCU 8. That is, the auxiliary battery 17 can be charged by the output power of the main battery 14.

[0057] Figure 5 shows the transitions in the power state of vehicle 1. As shown in Figure 5, vehicle 1 has three power states: power off, occupied, and Ready on. As will be clear from the following explanation, the power state being "occupied" does not necessarily require the user of vehicle 1 (hereinafter simply referred to as "user") to be present inside the vehicle.

[0058] When the power state is power off, the low-voltage power supply, high-voltage power supply, and drive force are all turned off. When the low-voltage power supply is off, the auxiliary relay 19 is open, and the power supply between the auxiliary battery 17 and the auxiliary equipment 18 is cut off. When the high-voltage power supply is off, the main relay 20 is open, and the power supply between the main battery 14 and the PCU 8 is cut off. When the drive force is off, the PCU 8's initialization operation of the drive system (system self-diagnosis, inverter initialization, etc.) is not yet complete, and power supply from the main battery 14 to the motor 10 has not started.

[0059] When the first trigger occurs while the power state is power off, the power state transitions from power off to occupying. In this embodiment, the first trigger is the opening of the door of vehicle 1. Therefore, when a user unlocks the door lock of vehicle 1 and opens the door of vehicle 1 in order to get into vehicle 1, the power state of vehicle 1 transitions from power off to occupying.

[0060] When the power state is "riding," the low-voltage and high-voltage power supplies are turned on, and the driving force is kept off. When the low-voltage power supply is turned on, that is, when the low-voltage power supply is activated, the ECU 30 uses the output power of the auxiliary battery 17 to close the auxiliary relay 19. As a result, power supply from the auxiliary battery 17 to the auxiliary components 18 begins.

[0061] When the high-voltage power supply is turned on, that is, when the high-voltage power supply is activated, the BMS9 performs an initialization operation that includes checking the status of the main battery 14, and after the initialization operation is completed, it closes the main relay 20 using the output power of the auxiliary battery 17. As a result, power supply from the main battery 14 to the PCU8 begins.

[0062] Furthermore, as shown in Figure 4, since the air conditioner 7 is directly connected to the main battery 14, power supply from the main battery 14 to the air conditioner 7 also begins when the high-voltage power supply is turned on. However, if the operating status of the air conditioner 7 is set to off by the user, power supply from the main battery 14 to the air conditioner 7 will be stopped even if the high-voltage power supply is on.

[0063] When the second trigger occurs while the power state is "riding," the power state transitions from "riding" to "Ready On." In this embodiment, the second trigger is the user performing a start operation on the vehicle 1, and two options are available for the start operation. The first option is a combined operation of pressing the brake pedal 41 and pressing the start switch 5, and the second option is a single operation of pressing the brake pedal 41. The user selects either the first or second option as the start operation for starting the vehicle 1 via the HMI 6 (e.g., MM display 61). In this embodiment, in the initial state of the vehicle 1 (e.g., the vehicle 1 as shipped), the start operation is set to the first option.

[0064] When the first option is set as the start operation, the power state transitions from "in occupancy" to "Ready On" when the user performs a combined operation of the first option. On the other hand, when the second option is set as the start operation, the power state transitions from "in occupancy" to "Ready On" when the user performs a single operation of the second option. Note that only one operation method (for example, the first option or the second option) may be set as the start operation for vehicle 1.

[0065] When the power state is Ready ON, the low-voltage and high-voltage power supplies are turned on, and the drive force is put into standby mode. Therefore, the PCU 8 performs an initialization operation of the drive system to transition the power state of vehicle 1 to Ready ON and put the drive force into standby mode. When the drive force is in standby mode, the initialization operation of the drive system by the PCU 8 is complete, but power supply from the main battery 14 to the motor 10 has not started. In this state, when the user presses the brake pedal 41 and sets the shift gear of vehicle 1 to drive (D) mode or reverse (R) mode, the drive force is turned on and power supply from the main battery 14 to the motor 10 starts.

[0066] On the other hand, if the user sets the shift gear of vehicle 1 to parking (P) mode after the vehicle 1 has been driven, the driving force changes from on to standby mode, and the power supply from the main battery 14 to the motor 10 is stopped. In this state, when the third trigger occurs, the driving force changes from standby mode to off, and the power state transitions from Ready On to Riding. That is, if the third trigger occurs when the power state is Ready On, the power state transitions from Ready On to Riding. In this embodiment, the third trigger is the user pressing the start switch 5. Therefore, if the user presses the start switch 5 after setting the shift gear of vehicle 1 to parking mode, the power state transitions from Ready On to Riding.

[0067] When the fourth trigger occurs while the power state is occupied, the power state transitions from occupied to power off. In this embodiment, the fourth trigger is when the doors of vehicle 1 are locked from the outside of vehicle 1, or when vehicle 1 is inactive for a threshold time or longer. Therefore, when a user who has exited vehicle 1 locks the doors of vehicle 1, the power state transitions from occupied to power off. The power state also transitions from occupied to power off in situations such as when vehicle 1 is left unattended with its doors unlocked, or when a user is dozing off in a parked vehicle 1. Note that the threshold time when the key to vehicle 1 is inside vehicle 1 (e.g., 30 to 80 minutes) and the threshold time when the key to vehicle 1 is outside vehicle 1 (e.g., 3 to 10 minutes) may be different.

[0068] When vehicle 1 is powered off, naturally, the user cannot use the HMI 6 and air conditioner 7 inside the vehicle. On the other hand, when the power state is set to "occupied," the HMI 6 and air conditioner 7 can be used while avoiding power consumption for driving vehicle 1. For this reason, in some scenarios when vehicle 1 is stationary, the user may want to fix the power state to "occupied." For example, such scenarios include when the user is viewing desired content on the MM display 61, when the user is using vehicle 1 as accommodation, and when the user is camping outside vehicle 1. In these scenarios, it is desirable to maintain the operation of the air conditioner 7 without turning off the power to vehicle 1 to keep the inside of the vehicle at a comfortable temperature.

[0069] Therefore, in this embodiment, a state-holding mode is provided as a user-selectable mode for vehicle 1, which maintains a vehicle state in which power is supplied to the air conditioner and the display inside vehicle 1, but power is not supplied to the drive system of vehicle 1. This allows the user to enjoy the above-mentioned scenes in a comfortable cabin environment, thereby improving the usability of vehicle 1.

[0070] In this embodiment, the vehicle state in which the power state is set to "on board" corresponds to a vehicle state in which power is supplied to the air conditioner and the displays inside the vehicle 1, but power is not supplied to the drive system of the vehicle 1. In other words, in state-holding mode, the power state is fixed to "on board," and even if the fourth trigger occurs, the power state does not transition from "on board" to "off." In other words, in state-holding mode, the transition of the power state from "on board" to "off" is disabled. Note that the displays of the HMI 6 (in this embodiment, the MM display 61, meter display 62, left-side operation display 63, and right-side operation display 64) are examples of displays inside the vehicle 1.

[0071] In this embodiment, the ECU 30 functions as a vehicle mode control device that controls the mode of the vehicle 1. Figure 6 is a functional block diagram of the processor 33 of the ECU 30. As shown in Figure 6, the processor 33 has a mode setting unit 34 and a threshold setting unit 35. The mode setting unit 34 and the threshold setting unit 35 are functional modules that are realized by the execution of a computer program stored in the memory 32 of the ECU 30 by the processor 33 of the ECU 30. These functional modules may each be realized by a dedicated arithmetic circuit provided in the processor 33. The ECU 30 is an example of a vehicle mode control device.

[0072] The mode setting unit 34 sets the mode of the vehicle 1. In particular, in this embodiment, the mode setting unit 34 sets the mode of the vehicle 1 to a state-holding mode, which maintains the vehicle state set during riding, based on user instructions. For example, the user instructs the mode of the vehicle 1 via the HMI 6. When the user requests the start of the state-holding mode, the mode setting unit 34 sets the mode of the vehicle 1 to the state-holding mode.

[0073] On the other hand, the mode setting unit 34 terminates the state holding mode when predetermined conditions are met in the state holding mode. In this embodiment, the predetermined conditions include the following first termination conditions to fifth termination conditions, and the mode setting unit 34 terminates the state holding mode when any one of the first termination conditions to fifth termination conditions is met.

[0074] The first termination condition is that the parameter related to the remaining charge of the main battery 14 has fallen to a predetermined threshold. In this embodiment, the parameter related to the remaining charge of the main battery 14 is the State of Charge (SOC) of the main battery 14. In this case, the mode setting unit 34 terminates the state holding mode when the SOC of the main battery 14 calculated by the BMS 9 falls to a predetermined threshold. By setting the first termination condition as the termination condition for the state holding mode, it is possible to prevent the vehicle 1 from running out of power due to the continued operation of the state holding mode.

[0075] The second termination condition is the detection of an abnormality in vehicle 1. In this case, the mode setting unit 34 terminates the state holding mode when an abnormality is detected in vehicle 1. An abnormality in vehicle 1 includes, for example, an abnormality detected by the vehicle 1's self-diagnosis, a communication interruption, etc. By setting a second termination condition as the termination condition for the state holding mode, it is possible to prevent the state holding mode from continuing when vehicle 1 is in an abnormal state.

[0076] A third termination condition is that the user requests the termination of the state-holding mode via the HMI 6. In this case, the mode setting unit 34 terminates the state-holding mode when the user requests its termination via the HMI 6. For example, the user requests the termination of the state-holding mode by operating the MM display 61 of the HMI 6 (for example, by selecting the termination button displayed on the MM display 61). Alternatively, the third termination condition may be that the user requests the termination of the state-holding mode via the mobile terminal 200. In this case, a notification of the termination request is sent from the mobile terminal 200 to the vehicle 1 via the server 300.

[0077] The fourth termination condition is that the user presses the start switch 5. In this case, the mode setting unit 34 terminates the state-holding mode when the user presses the start switch 5. However, to avoid unintended mode termination by the user due to erroneous operation of the start switch 5, the fourth termination condition may also be that the user presses the start switch 5 AND the user approves the termination of the state-holding mode. In this case, the user approves the termination of the state-holding mode via the HMI 6. As a specific example, when the start switch 5 is pressed, the mode setting unit 34 displays a confirmation screen on the HMI 6 (e.g., MM display 61) to confirm whether or not to terminate the state-holding mode, and the user selects whether or not to terminate via the HMI 6. Figure 7 shows an example of a confirmation screen to confirm whether or not to terminate the state-holding mode.

[0078] The fifth termination condition is that the user has performed the start operation of vehicle 1. In this case, the mode setting unit 34 terminates the state holding mode when the user performs the start operation. When the first option is set to start operation, the user performs both the operation of pressing the brake pedal 41 and the operation of pressing the start switch 5, and when the second option is set to start operation, the user performs only the operation of pressing the brake pedal 41.

[0079] Furthermore, when the second option is set to start operation, in order to avoid unintended mode termination by the user due to erroneous operation of the brake pedal 41, the fifth termination condition may be that the user has pressed the brake pedal 41 and the user has approved the transition of the power state. In this case, the user approves the transition of the power state from riding to Ready On via the HMI 6. As a specific example, when the brake pedal 41 is pressed, the mode setting unit 34 displays a confirmation screen on the HMI 6 (e.g., MM display 61) to confirm whether or not to transition the power state, and the user selects whether or not to transition the power state via the HMI 6. Figure 8 shows an example of a confirmation screen to confirm whether or not to transition the power state.

[0080] As described above, the first termination condition is met when the parameter related to the remaining charge of the main battery 14 (in this embodiment, the State of Charge of the main battery 14) falls to a predetermined threshold. That is, the mode setting unit 34 terminates the state holding mode when the parameter related to the remaining charge of the main battery 14 falls to a threshold. However, if the threshold is set as a predetermined fixed value, the state holding mode may terminate against the user's will.

[0081] Therefore, in this embodiment, the threshold setting unit 35 sets a threshold for a parameter related to the remaining charge of the main battery 14 based on input from the user. That is, the threshold setting unit 35 sets the parameter threshold to the value input by the user. This prevents the state holding mode from terminating against the user's will. For example, the threshold setting unit 35 sets the parameter threshold based on input from the user to the HMI 6.

[0082] The following describes the processing flow when executing control to start the state-holding mode, with reference to Figure 9. Figure 9 is a flowchart of the control routine for the mode start process in the first embodiment of the present invention. This control routine is repeatedly executed by the processor 33 of the ECU 30 according to a computer program stored in the memory 32 of the ECU 30.

[0083] First, in step S101, the threshold setting unit 35 of the processor 33 determines whether or not the user has requested the setting of the state retention mode. For example, the threshold setting unit 35 determines that the setting of the state retention mode has been requested when the user has selected the state retention mode item on the normal screen, while the normal screen displaying various information of the vehicle 1 is displayed on the HMI 6 (e.g., MM display 61).

[0084] If it is determined in step S101 that setting a state hold mode is not required, the control routine proceeds to step S102. In this case, the display of HMI6 is maintained, and in step S102, the threshold setting unit 35 displays the normal screen on HMI6. After step S102, the control routine terminates.

[0085] On the other hand, if it is determined in step S101 that setting the state hold mode is required, the control routine proceeds to step S103. In step S103, the threshold setting unit 35 displays the state hold mode setting screen on the HMI 6 (for example, the MM display 61).

[0086] Figure 10 shows an example of a state-holding mode setting screen. In the example in Figure 10, the state-holding mode setting screen includes a parameter operation unit 611 into which a threshold value is input, a start button 612 for starting the state-holding mode, and a back button 613 for returning to the normal screen.

[0087] The parameter operation unit 611 includes a display of the current value and threshold of a parameter (in this embodiment, the SOC of the main battery 14), and is, for example, in the form of a slider bar. In this case, the user inputs the threshold to the HMI 6 by changing the position of the threshold on the slider bar in the parameter operation unit 611. In this embodiment, the threshold setting unit 35 displays the value that was previously set as the threshold as the initial value of the threshold in the parameter operation unit 611. This eliminates the need for users who do not wish to change the threshold from the previously set value to reset the threshold.

[0088] Furthermore, in this embodiment, the threshold setting unit 35 displays the parameter operation unit 611 on the HMI 6 before the state-holding mode is started. This prevents the state-holding mode from being started with the threshold set to a value unintended by the user (for example, the initial threshold value). In particular, in this embodiment, as shown in Figure 10, the threshold setting unit 35 displays the parameter operation unit 611 on the HMI 6 along with the state-holding mode start button 612. This makes it easier for the user to set the threshold when they want to start the state-holding mode.

[0089] After step S103, in step S104, the threshold setting unit 35 determines whether the user has requested a transition to the normal screen. For example, the threshold setting unit 35 determines that a transition to the normal screen has been requested if the user selects the back button 613. If it is determined that a transition to the normal screen has not been requested, the control routine proceeds to step S105.

[0090] In step S105, the threshold setting unit 35 determines whether the user has requested a change to the threshold. For example, the threshold setting unit 35 determines that a change to the threshold has been requested if an operation to change the threshold is input to the HMI 6, for example, if the position of the threshold on the slider bar is changed in the parameter operation unit 611 of the state hold mode setting screen. If it is determined that a change to the threshold has been requested, the control routine proceeds to step S106.

[0091] In step S106, the threshold setting unit 35 changes the threshold according to the user's input. If the user enters a value greater than or equal to the current value of the parameter as the threshold, the threshold setting unit 35 prohibits the start of the state hold mode. In this case, for example, the threshold setting unit 35 prohibits the start of the state hold mode by graying out the start button 612 on the setting screen. Alternatively, the threshold setting unit 35 may prohibit the start of the state hold mode by hiding the start button 612.

[0092] After step S106, the control routine proceeds to step S107. On the other hand, if it is determined in step S105 that no change in the threshold is requested, the control routine skips step S106 and proceeds to step S107.

[0093] In step S107, the mode setting unit 34 of the processor 33 determines whether the user has requested the start of the state-holding mode. For example, the mode setting unit 34 determines that the start of the state-holding mode has been requested when the user selects the start button 612 on the setting screen. If it is determined that the start of the state-holding mode has not been requested, the control routine returns to step S103. On the other hand, if it is determined that the start of the state-holding mode has been requested, the control routine proceeds to step S108.

[0094] In step S108, the mode setting unit 34 executes the state hold mode and changes the mode of vehicle 1 from normal mode to state hold mode. In normal mode, the power state of vehicle 1 is set according to the power state transitions described above, as shown in Figure 5. For example, if the fourth trigger occurs when the power state is occupied, the power state transitions from occupied to power off. On the other hand, in state hold mode, even if the fourth trigger occurs, the power state does not transition from occupied to power off.

[0095] Next, in step S109, the threshold setting unit 35 displays the state-holding mode execution screen on the HMI6. That is, the threshold setting unit 35 changes the screen displayed on the HMI6 from the state-holding mode setting screen to the state-holding mode execution screen. The threshold setting unit 35 displays the state-holding mode setting screen on the HMI6 before the state-holding mode is started, and displays the state-holding mode execution screen on the HMI6 when the state-holding mode is being executed.

[0096] Figure 11 shows an example of the execution screen for the state hold mode. In the example in Figure 11, the execution screen for the state hold mode includes a parameter operation unit 611 into which a threshold value is input, an exit button 614 for ending the state hold mode, and a back button 613 for returning to the normal screen.

[0097] As described above, the parameter operation unit 611 includes the display of the current value and threshold of the parameter. Therefore, the threshold setting unit 35 displays the current value and threshold of the parameter on the HMI 6 when the state-holding mode is running. This makes it possible for the user to predict the remaining duration of the state-holding mode.

[0098] Furthermore, in this embodiment, the threshold setting unit 35 prohibits the input of a value greater than or equal to the current value of the parameter as the threshold while the state holding mode is being executed. This prevents the state holding mode from immediately terminating due to user error or other reasons. For example, if an operation to change the threshold to a value greater than or equal to the current value is performed in the parameter operation unit 611 of the execution screen, the threshold setting unit 35 will invalidate that operation. In this case, the threshold setting unit 35 may also notify the user of a warning via the HMI 6.

[0099] When the back button 613 is selected on the execution screen of the state-holding mode, the mode setting unit 34 changes the display of the HMI6 from the execution screen of the state-holding mode to the normal screen. When the mode setting unit 34 displays the normal screen on the HMI6 while the state-holding mode is running, it may also display an icon indicating that the state-holding mode is running on the normal screen on the HMI6. This allows the user to easily recognize that the state-holding mode is running, even when the user is performing operations on the normal screen. After step S109, this control routine terminates.

[0100] Furthermore, if it is determined in step S104 that a transition to the normal screen is requested, this control routine proceeds to step S102. In step S102, the threshold setting unit 35 changes the display of the HMI6 from the state-holding mode setting screen to the normal screen and displays the normal screen on the HMI6. After step S102, this control routine terminates.

[0101] The parameter related to the remaining charge of the main battery 14 may also be the driving range of the vehicle 1. In this case, the current value of the parameter, i.e., the current value of the driving range of the vehicle 1, is calculated, for example, based on the State of Charge (SOC) of the main battery 14 calculated by the BMS 9 and the energy consumption of the vehicle 1 calculated from the vehicle 1's driving history. Figure 12 shows an example of the setting screen for the state-holding mode when the parameter is the driving range of the vehicle 1. In this modified example, the execution screen for the state-holding mode shown in Figure 11 is also changed accordingly.

[0102] Furthermore, the threshold setting unit 35 may display an estimated value of the continuation time of the state-holding mode on the HMI 6. This allows the user to set the threshold considering the continuation time. For example, the threshold setting unit 35 calculates an estimated value of the continuation time of the state-holding mode based on the current value of the parameter and the threshold value of the parameter. In this case, the power consumption of the vehicle 1 in the state-holding mode can be the current power consumption of the vehicle 1, the average power consumption in past state-holding modes, or a predetermined fixed value. Figure 13 shows an example of the state-holding mode setting screen when the continuation time is shown. In this modified example, the execution screen of the state-holding mode in Figure 11 and the setting screen of the state-holding mode in Figure 12 are also changed accordingly.

[0103] <Second Embodiment> The configuration and control of the vehicle mode control device according to the second embodiment are basically the same as those of the vehicle mode control device according to the first embodiment, except for the points described below. Therefore, the second embodiment of the present invention will be described below, focusing on the differences from the first embodiment.

[0104] As described above, the first termination condition is met by a decrease in the State of Charge (SOC) of the main battery 14, and the second termination condition is met by an abnormality in the vehicle 1. In other words, the first and second termination conditions are met by factors other than termination operations by the user. If the first termination condition is met, it is desirable to turn off the power to the vehicle 1 after the state-holding mode ends in order to avoid a further decrease in the SOC of the main battery 14. Also, if the second termination condition is met, it is desirable to turn off the power to the vehicle 1 after the state-holding mode ends in order to avoid leaving the abnormal state unattended.

[0105] When transitioning the power state from "in use" to "power off," it is desirable to maintain the "in use" state for several minutes before turning off the power to vehicle 1, from the perspective of protecting the power system. However, if the display on the vehicle 1 remains on even after the first or second termination condition is met and the state-holding mode ends, the user may feel uneasy.

[0106] Therefore, in the second embodiment, when the state holding mode ends due to the fulfillment of the first or second termination condition, the mode setting unit 34 temporarily sets the mode of the vehicle 1 to the transition mode before turning off the power to the vehicle 1. In the transition mode, power is supplied to the display inside the vehicle 1 while the display is turned off. This prevents the user from feeling any discomfort with the state of the vehicle 1 after the state holding mode has ended.

[0107] In transition mode, the power state in vehicle 1 remains the same as when the vehicle was in use. The mode setting unit 34, for example, reduces the brightness of the backlight of the display in vehicle 1 (the display of HMI 6 in this embodiment) to the minimum or zero, thereby enabling a state in which power is supplied to the display while the display is turned off.

[0108] The following describes the processing flow when executing control to terminate the state holding mode, with reference to Figure 14. Figure 14 is a flowchart of the control routine for mode termination processing in the second embodiment of the present invention. This control routine is repeatedly executed by the processor 33 of the ECU 30 according to a computer program stored in the memory 32 of the ECU 30.

[0109] First, in step S201, the mode setting unit 34 of the processor 33 determines whether the mode of vehicle 1 is set to state-holding mode. If it is determined that the mode of vehicle 1 is not set to state-holding mode, this control routine terminates. On the other hand, if it is determined that the mode of vehicle 1 is set to state-holding mode, this control routine proceeds to step S202.

[0110] In step S202, the threshold setting unit 35 of the processor 33 determines whether or not the user has requested a change in the threshold. For example, the threshold setting unit 35 determines that a change in the threshold has been requested if an operation to change the threshold is input to the HMI 6, for example, if the position of the threshold on the slider bar is changed in the parameter operation unit 611 of the execution screen in state holding mode. If it is determined that a change in the threshold has been requested, this control routine proceeds to step S203.

[0111] In step S203, the threshold setting unit 35 changes the threshold value in response to user input. If the user sets the threshold value to a value higher than the current value of the SOC, that operation is invalidated.

[0112] After step S203, the control routine proceeds to step S204. On the other hand, if it is determined in step S02 that no change in the threshold is requested, the control routine skips step S203 and proceeds to step S204.

[0113] In step S204, the mode setting unit 34 determines whether a predetermined condition has been met. In this embodiment, the mode setting unit 34 determines whether any one of the first to fifth termination conditions has been met. If it is determined that none of the first to fifth termination conditions have been met, the control routine terminates. On the other hand, if it is determined that any one of the first to fifth termination conditions has been met, the control routine proceeds to step S205.

[0114] In step S205, the mode setting unit 34 determines whether the predetermined condition is the first termination condition or the second termination condition. If it is determined that the predetermined condition is the first termination condition or the second termination condition, that is, if the first termination condition or the second termination condition is met, the control routine proceeds to step S206.

[0115] In step S206, the mode setting unit 34 terminates the state holding mode and changes the mode of vehicle 1 from state holding mode to transition mode. The mode setting unit 34 maintains the transition mode for a predetermined time (for example, 3 to 5 minutes) and turns off the power to vehicle 1 after the transition mode ends. In the transition mode, the mode setting unit 34 supplies power to the display inside vehicle 1 while turning off the display. After step S206, this control routine ends.

[0116] On the other hand, if it is determined in step S205 that the predetermined conditions are not the first or second termination conditions, that is, if the third, fourth, or fifth termination conditions are met, the control routine proceeds to step S207.

[0117] In step S207, the mode setting unit 34 terminates the state holding mode and changes the mode of vehicle 1 from state holding mode to normal mode. In normal mode, the power state of vehicle 1 is set according to the power state transitions described above, referring to Figure 5. For example, if the fourth trigger occurs when the power state is occupied, the power state transitions from occupied to power off.

[0118] Next, in step S208, the mode setting unit 34 determines whether the predetermined condition is the fifth termination condition. If it is determined that the predetermined condition is the fifth termination condition, that is, if the fifth termination condition is met, the control routine proceeds to step S209.

[0119] In step S209, a start operation is performed to terminate the state holding mode, so the mode setting unit 34 changes the power state from "in use" to "Ready On". After step S209, this control routine terminates.

[0120] On the other hand, if it is determined in step S208 that the predetermined condition is not the fifth termination condition, that is, if it is determined that the state holding mode has ended due to the fulfillment of the third or fourth termination condition, this control routine terminates.

[0121] <Other Embodiments> Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the claims. For example, the air conditioner 7 may be included in the auxiliary equipment 18 and powered by the auxiliary battery 17.

[0122] Vehicle 1 may also be a plug-in hybrid electric vehicle (PHEV) equipped with a motor and an engine as a drive system. Vehicle 1 may also be an autonomous driving vehicle in which at least part of the acceleration, braking, and steering of Vehicle 1 is performed automatically.

[0123] Furthermore, although the above-described embodiment assumes that a screen related to the state holding mode is displayed on the MM display 61 in the vehicle 1, such a screen may also be displayed on other displays in the vehicle 1 (for example, the meter display 62, the left-side operation display 63, the right-side operation display 64, or a head-up display (HUD) not shown). Also, at least one of the left-side operation display 63 and the right-side operation display 64 may be omitted from the vehicle 1.

[0124] Furthermore, the first to fourth triggers for transitioning the power state of vehicle 1 may be other conditions. For example, the first trigger for transitioning the power state of vehicle 1 from power off to in operation may be pressing the start switch 5, etc. Also, at least one of the second to fifth termination conditions may be omitted.

[0125] Furthermore, the threshold setting unit 35 may set parameter thresholds based on input from the user to the mobile terminal 200. In this case, a state-holding mode setting screen or execution screen is displayed on the mobile terminal 200, and the user inputs an operation to change the threshold on the setting screen or execution screen to the mobile terminal 200. In this case, the threshold setting unit 35 communicates with the mobile terminal 200 via the server 300 using the wide-area communication module 2. Alternatively, the threshold setting unit 35 may communicate directly with the mobile terminal 200 using the short-range communication module 3.

[0126] Alternatively, a server 300 or the like located outside the vehicle 1 may function as a vehicle mode control device. In this case, necessary information is transmitted from the vehicle 1 to the server 300, and the ECU 30 of the vehicle 1 performs vehicle control related to the mode setting of the vehicle 1 in response to instructions from the server 300.

[0127] Furthermore, a computer program that enables a computer to implement the functions of each part of the processor 33 of the ECU 30 or the server's processor may be provided in the form of a recording medium readable by a computer, or as part of a computer program product. Examples of computer-readable recording media include magnetic recording media, optical recording media, or semiconductor memory. [Explanation of symbols]

[0128] 1 vehicle 6 HMI 7. Air conditioner 14 Main unit battery 30 Electronic Control Unit (ECU) 33 processors 34 Mode setting section 35. Threshold setting section

Claims

1. A vehicle mode control device that controls the mode of a vehicle, A mode setting unit sets the vehicle's mode to a state-holding mode that maintains a vehicle state in which power is supplied to the vehicle's air conditioner and in-vehicle display, but not to the vehicle's drivetrain, based on the instructions of the vehicle's user. A threshold setting unit sets a threshold for a parameter related to the remaining charge of the vehicle's main battery based on the input from the user. Equipped with, The mode setting unit is a vehicle mode control device that terminates the state holding mode when the parameter drops to the threshold.

2. The vehicle mode control device according to claim 1, wherein the parameter is the SOC of the main battery.

3. The vehicle mode control device according to claim 1, wherein the parameter is the drivable range of the vehicle.

4. The vehicle mode control device according to any one of claims 1 to 3, wherein the threshold setting unit displays the parameter operation unit into which the threshold is input on the display before the state holding mode is started.

5. The vehicle mode control device according to claim 4, wherein the threshold setting unit displays the parameter operation unit on the display together with the state holding mode start button.

6. The vehicle mode control device according to claim 4, wherein the threshold setting unit displays the value previously set as the threshold as the initial value of the threshold in the parameter operation unit.

7. The vehicle mode control device according to any one of claims 1 to 3, wherein the threshold setting unit prohibits inputting a value greater than or equal to the current value of the parameter as the threshold while the state holding mode is being executed.

8. The vehicle mode control device according to any one of claims 1 to 3, wherein the threshold setting unit calculates an estimated value of the duration for which the state holding mode can be maintained based on the current value of the parameter and the threshold, and displays the estimated value on the display.

9. The vehicle mode control device according to any one of claims 1 to 3, wherein the mode setting unit temporarily sets the vehicle mode to a transition mode before turning off the power to the vehicle when the state holding mode ends, and in the transition mode, power is supplied to the display while the display is turned off.

10. The vehicle mode control device according to any one of claims 1 to 3, wherein the threshold setting unit displays the current value of the parameter and the threshold on the display when the state holding mode is being executed.

11. A vehicle mode control method performed by a computer, Based on the vehicle user's instructions, the vehicle's mode is set to a state-holding mode in which power is supplied to the vehicle's air conditioner and the in-vehicle display, but power is not supplied to the vehicle's drivetrain. Based on the user input, a threshold parameter for the remaining charge of the vehicle's main battery is set. When the parameter drops to the threshold, the state holding mode is terminated. A vehicle mode control method, including the following.

12. Based on the vehicle user's instructions, the vehicle's mode is set to a state-holding mode in which power is supplied to the vehicle's air conditioner and the in-vehicle display, but power is not supplied to the vehicle's drivetrain. Based on the user input, a threshold parameter for the remaining charge of the vehicle's main battery is set. When the parameter drops to the threshold, the state holding mode is terminated. A computer program that causes a computer to execute something.

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