Vehicle, vehicle control device, storage medium, and vehicle control method

Abstract

A vehicle, a vehicle control device, a storage medium, and a vehicle control method are disclosed. The vehicle includes: a drive system electrical system that supplies power to a drive system; a non-drive system electrical system that supplies power to a non-drive system; a first electromagnetic contactor electrically connected to the drive system electrical system and the non-drive system electrical system; a second electromagnetic contactor electrically connected to a power supply system that supplies power to the non-drive system electrical system and the non-drive system electrical system; and an electromagnetic contactor control unit that performs at least one of a first control process of setting the first electromagnetic contactor to a non-conducting state when the non-drive system electrical system does not operate using the DC power supply included in the drive system electrical system, and a second control process of setting the second electromagnetic contactor to a non-conducting state when the non-drive system electrical system does not operate using the power supply system.

Description

Technical Field

[0001] This invention relates to vehicles, vehicle control devices, storage media, and vehicle control methods. Background Technology

[0002] In recent years, the popularity of vehicles powered by motors, such as electric vehicles (EVs), hybrid vehicles (HVs), and fuel cell vehicles (FCVs), has been continuously advancing. A proposed solution is to use these vehicles as rooms while their batteries are being charged, allowing users to still utilize the vehicle's audio equipment, video equipment, air conditioning, etc., indoors.

[0003] As a technology for using a vehicle as a room, the charging system disclosed in Japanese Patent Application Publication No. 2020-99104 can be cited as an example. In the case of using a vehicle as a room in a private house mode, this charging system sets both the charging relay and the system main relay to a connected state, so that the driving unit and all auxiliary equipment can be used. Summary of the Invention

[0004] However, the aforementioned disconnection detection device keeps the drive battery and drive unit connected even when the vehicle is used as a room and the drive unit is not in use, which may accelerate the deterioration of the electronic components included in the drive unit.

[0005] The present invention is proposed in view of the above circumstances, and one of its objectives is to provide a vehicle, a vehicle control device, a storage medium, and a vehicle control method capable of suppressing the deterioration of electronic components included in the vehicle's electrical system.

[0006] In order to solve the above-mentioned problems and achieve the relevant objectives, the present invention adopts the following solution.

[0007] (1): A vehicle according to one aspect of the present invention comprises: a drive system electrical system that supplies power to a drive system; a non-drive system electrical system that supplies power to a non-drive system; a first electromagnetic contactor electrically connected to the drive system electrical system and the non-drive system electrical system; a second electromagnetic contactor electrically connected to a power supply system that supplies power to the non-drive system electrical system and the non-drive system electrical system; and an electromagnetic contactor control unit that performs at least one of a first control process of setting the first electromagnetic contactor to a non-conducting state when the non-drive system electrical system does not operate using the DC power supply included in the drive system electrical system, and a second control process of setting the second electromagnetic contactor to a non-conducting state when the non-drive system electrical system does not operate using the power supply system.

[0008] (2): In the above (1) scheme, the vehicle may also have a first grounding determination unit. The first grounding determination unit determines that the drive system electrical system is grounded when the first electromagnetic contactor is in the conducting state and the parasitic capacitance to ground of the drive system electrical system measured by the first grounding sensor included in the drive system electrical system exceeds the first conducting state threshold. When the first electromagnetic contactor is in the non-conducting state and the parasitic capacitance to ground of the drive system electrical system measured by the first grounding sensor exceeds the first non-conducting state threshold which is different from the first conducting state threshold, the first grounding determination unit determines that the drive system electrical system is grounded.

[0009] (3): In the above scheme (1) or (2), the vehicle may also have a second grounding determination unit. The second grounding determination unit determines that the non-drive electrical system is grounded when the second electromagnetic contactor is in the conducting state and the parasitic capacitance to ground of the non-drive electrical system measured by the second grounding sensor included in the non-drive electrical system exceeds the second conducting state threshold. When the second electromagnetic contactor is in the non-conducting state and the parasitic capacitance to ground of the non-drive electrical system measured by the second grounding sensor exceeds the second non-conducting state threshold which is different from the second conducting state threshold, the second grounding determination unit determines that the non-drive electrical system is grounded.

[0010] (4): In any of the above (1) to (3), the vehicle may also have the power system.

[0011] (5): A vehicle control device according to one aspect of the present invention includes an electromagnetic contactor control unit, which performs at least one of a first control process and a second control process. The first control process is to set a first electromagnetic contactor electrically connected to the non-drive system and the drive system to a non-conducting state when the non-drive system that supplies power to the non-drive system of the vehicle does not operate using the DC power supply included in the drive system that supplies power to the drive system of the vehicle. The second control process is to set a second electromagnetic contactor electrically connected to the non-drive system and the power supply system to a non-conducting state when the non-drive system does not operate using the power supply system that supplies power to the non-drive system.

[0012] (6): A storage medium of one aspect of the present invention stores a vehicle control program, the vehicle control program enabling a computer to implement a vehicle control function having an electromagnetic contactor control unit, the electromagnetic contactor control unit executing at least one of a first control process and a second control process, the first control process being a process of setting a first electromagnetic contactor electrically connected to the non-drive system and the drive system to a non-conducting state when the non-drive system power supply to the vehicle does not operate using the DC power supply included in the drive system power supply to the vehicle's drive system, the second control process being a process of setting a second electromagnetic contactor electrically connected to the non-drive system and the power supply system to a non-conducting state when the non-drive system power supply to the non-drive system does not operate using the power supply system that supplies power to the non-drive system.

[0013] (7): A vehicle control method according to one aspect of the present invention causes a computer to perform at least one of a first control process and a second control process. The first control process is to set a first electromagnetic contactor electrically connected to the non-drive system and the drive system to a non-conducting state when the non-drive system that supplies power to the non-drive system of the vehicle does not operate using the DC power supply included in the drive system that supplies power to the drive system of the vehicle. The second control process is to set a second electromagnetic contactor electrically connected to the non-drive system and the power supply system to a non-conducting state when the non-drive system does not operate using the power supply system that supplies power to the non-drive system.

[0014] According to (1) to (4), when the vehicle operates without utilizing the DC power supply included in the drive system's electrical system, the first electromagnetic contactor is set to a non-conducting state, reducing the time required to supply power from the drive system's electrical system to the non-drive system's electrical system. According to (1) to (4), when the vehicle operates without utilizing the power supply system, the second electromagnetic contactor is set to a non-conducting state, reducing the time required to supply power from the power supply system to at least one of the non-drive system's electrical system and the drive system's electrical system. Therefore, according to (1) to (4), the vehicle can reduce the time required to supply power to at least one of the electronic devices included in the non-drive system's electrical system and the electronic devices included in the drive system's electrical system, thereby suppressing the deterioration of these electronic devices.

[0015] According to (2), the vehicle uses a first conduction state threshold, set according to the possible range of values ​​for the parasitic capacitance to ground of the drive system electrical system when the first electromagnetic contactor is in the conduction state, to determine whether the drive system electrical system is grounded. According to (2), the vehicle uses a first non-conducting state threshold, set according to the possible range of values ​​for the parasitic capacitance to ground of the drive system electrical system when the first electromagnetic contactor is in the non-conduction state, to determine whether the drive system electrical system is grounded. Therefore, according to (2), the vehicle can accurately determine whether the drive system electrical system is grounded in either the case where the first electromagnetic contactor is in the conduction state or the case where the first electromagnetic contactor is in the non-conduction state.

[0016] According to (3), the vehicle uses a second conduction state threshold, set according to the possible range of values ​​for the parasitic capacitance to ground of the non-drive electrical system when the second electromagnetic contactor is in the conduction state, to determine whether the non-drive electrical system is grounded. According to (3), the vehicle uses a second non-conductivity state threshold, set according to the possible range of values ​​for the parasitic capacitance to ground of the non-drive electrical system when the second electromagnetic contactor is in the non-conduction state, to determine whether the non-drive electrical system is grounded. Therefore, according to (3), the vehicle can accurately determine whether the non-drive electrical system is grounded in either the case where the second electromagnetic contactor is in the conduction state or the case where the second electromagnetic contactor is in the non-conduction state.

[0017] According to (5), when the non-drive system electrical system operates without utilizing the DC power supply included in the drive system electrical system, the vehicle control device sets the first electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the drive system electrical system to the non-drive system electrical system. According to (5), when the non-drive system electrical system operates without utilizing the power supply system, the vehicle control device sets the second electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the power supply system to at least one of the non-drive system electrical system and the drive system electrical system. Therefore, according to (5), the vehicle control device can reduce the time for power to be supplied to at least one of the electronic devices included in the non-drive system electrical system and the electronic devices included in the drive system electrical system, thereby suppressing the degradation of these electronic devices.

[0018] According to (6), when the non-drive electronic system operates without utilizing the DC power supply included in the drive electronic system, the storage medium sets the first electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the drive electronic system to the non-drive electronic system. According to (6), when the non-drive electronic system operates without utilizing the power supply system, the storage medium sets the second electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the power supply system to at least one of the non-drive electronic system and the drive electronic system. Therefore, according to (6), the storage medium can reduce the time for power to be supplied to at least one of the electronic devices included in the non-drive electronic system and the electronic devices included in the drive electronic system, thereby suppressing the degradation of these electronic devices.

[0019] According to (7), when the non-drive system electrical system does not operate using the DC power supply included in the drive system electrical system, the vehicle control method sets the first electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the drive system electrical system to the non-drive system electrical system. According to (7), when the non-drive system electrical system does not operate using the power supply system, the vehicle control method sets the second electromagnetic contactor to a non-conducting state, thereby reducing the time for power to be supplied from the power supply system to at least one of the non-drive system electrical system and the drive system electrical system. Therefore, according to (7), the vehicle control method can reduce the time for power to be supplied to at least one of the electronic devices included in the non-drive system electrical system and the electronic devices included in the drive system electrical system, thereby suppressing the degradation of these electronic devices. Attached Figure Description

[0020] Figure 1 This is a diagram illustrating an example of a vehicle according to an embodiment.

[0021] Figure 2 This is a diagram illustrating an example of the hardware structure of a vehicle control device according to an embodiment.

[0022] Figure 3 This is a diagram illustrating an example of the software structure of a vehicle control device according to an embodiment.

[0023] Figure 4 This is a diagram illustrating an example of the first control process performed by the vehicle control device of the embodiment.

[0024] Figure 5 This is a diagram illustrating an example of a second control process performed by the vehicle control device of the embodiment.

[0025] Figure 6 This is a flowchart illustrating an example of the process performed by the first grounding determination unit of the embodiment.

[0026] Figure 7This is a flowchart illustrating an example of the process performed by the second grounding determination unit of the embodiment. Detailed Implementation

[0027] Hereinafter, embodiments of the vehicle, vehicle control device, vehicle control program, vehicle control method, and storage medium of the present invention will be described with reference to the accompanying drawings.

[0028] <Implementation Method>

[0029] First, refer to Figure 1 The vehicle used in the implementation method will be described. Figure 1 This is a diagram illustrating an example of a vehicle according to an embodiment. Figure 1 The vehicle 1 shown is, for example, an electric motor vehicle, a hybrid motor vehicle, or a fuel cell motor vehicle. For example... Figure 1 As shown, vehicle 1 includes a drive system electrical system 10, a motor 20, a drive wheel 30, a power system 40, an electromagnetic contactor 51, an electromagnetic contactor 52, a non-drive system electrical system 60, an electromagnetic contactor 71, and an electromagnetic contactor 72.

[0030] The drive system electrical system 10 is an electrical system that supplies power to the drive system that drives the vehicle 1. For example, Figure 1 As shown, the drive system electrical system 10 includes a DC power supply 11, an inverter 12, an electromagnetic contactor 13, an electromagnetic contactor 14, and a first grounding sensor 15.

[0031] The DC power supply 11 is, for example, a secondary battery such as a lithium-ion battery, which generates DC power and supplies it to the inverter 12. The inverter 12 converts the DC power supplied from the DC power supply 11 into AC power and supplies it to the motor 20.

[0032] Electromagnetic contactors 13 and 14 are electrically connected to the DC power supply 11 and the inverter 12. When DC power generated by the DC power supply 11 is supplied to at least one of the inverter 12 and the non-drive electrical system 60, electromagnetic contactors 13 and 14 are set to a current-carrying state, i.e., a conducting state. On the other hand, when DC power generated by the DC power supply 11 is not supplied to either the inverter 12 or the non-drive electrical system 60, electromagnetic contactors 13 and 14 are set to a non-current-carrying state, i.e., a non-conducting state.

[0033] The first grounding sensor 15 measures the parasitic capacitance to ground of the drive system electrical system 10 and generates first parasitic capacitance data representing this capacitance. The parasitic capacitance to ground mentioned here is, for example, the parasitic capacitance between the drive system electrical system 10 and the exterior components of the vehicle 1. The first grounding sensor 15 is set with a first on-state threshold, which is used to determine whether the drive system electrical system 10 is grounded when electromagnetic contactors 71 and 72 (examples of first electromagnetic contactors) are in an on-state. Furthermore, the first grounding sensor is set with a first off-state threshold, which is used to determine whether the drive system electrical system 10 is grounded when electromagnetic contactors 71 and 72 (examples of first electromagnetic contactors) are in an off-state.

[0034] Motor 20 converts the AC power supplied by inverter 12 into mechanical energy. This mechanical energy is transmitted to drive wheel 30 through gears, shafts, etc. Drive wheel 30 is driven by this mechanical energy.

[0035] For example, Figure 1 As shown, the power supply system 40 includes a DC power supply 41 and a power regulator 42.

[0036] The DC power source 41, such as a solar panel or a battery, generates DC power and supplies it to the power regulator 42. The power regulator 42 converts the DC power supplied from the DC power source 41 into AC power and supplies it to the non-drive system electrical system 60. The power system 40 may also be installed in a residence or other similar location instead of in the vehicle 1.

[0037] like Figure 1 As shown, electromagnetic contactors 51 and 52 are electrically connected to the power supply system 40 and the non-drive electrical system 60. When AC power generated by the power supply system 40 is supplied to at least one of the drive electrical system 10 and the non-drive electrical system 60, electromagnetic contactors 51 and 52 are set to a current-carrying state, i.e., a conducting state. On the other hand, when AC power generated by the power supply system 40 is not supplied to either the drive electrical system 10 or the non-drive electrical system 60, electromagnetic contactors 51 and 52 are set to a current-free state, i.e., a non-conducting state. Electromagnetic contactors 51 and 52 are examples of second electromagnetic contactors.

[0038] The non-drive system electrical system 60 is an electrical system that supplies power to a non-drive system for purposes other than driving the vehicle 1. For example, Figure 1 As shown, the non-drive electrical system 60 includes auxiliary equipment 61, a charger 62, and a second grounding sensor 63.

[0039] Auxiliary equipment 61 is equipment used for purposes other than enabling vehicle 1 to move. Examples of auxiliary equipment 61 include air conditioners, audio players, radios, and touch panel displays. Charger 62 is used for the purpose of charging DC power supply 11.

[0040] The second grounding sensor 63 measures the parasitic capacitance to ground of the non-drive electrical system 60 and generates second parasitic capacitance data representing this capacitance. The parasitic capacitance to ground mentioned here is, for example, the parasitic capacitance between the non-drive electrical system 60 and the exterior components of the vehicle 1. The second grounding sensor 63 is equipped with a second on-state threshold, which is used to determine whether the non-drive electrical system 60 is grounded when electromagnetic contactors 51 and 52 (examples of second electromagnetic contactors) are in an on-state. Furthermore, the second grounding sensor 63 is equipped with a second off-state threshold, which is used to determine whether the non-drive electrical system 60 is grounded when electromagnetic contactors 51 and 52 (examples of second electromagnetic contactors) are in an off-state.

[0041] like Figure 1 As shown, electromagnetic contactors 71 and 72 are electrically connected to the drive system electrical system 10 and the non-drive system electrical system 60. When DC power generated by DC power supply 11 is supplied to the non-drive system electrical system 60, or when DC power supply 11 is charged using charger 62, electromagnetic contactors 71 and 72 are set to a current-carrying state, i.e., a conducting state. On the other hand, when neither DC power generated by DC power supply 11 is supplied to the non-drive system electrical system 60 nor when DC power supply 11 is charged using charger 62, electromagnetic contactors 71 and 72 are set to a non-current-carrying state, i.e., a non-conducting state. Electromagnetic contactors 71 and 72 are examples of the first electromagnetic contactor.

[0042] The drive-type electrical system 10, the power supply system 40, and the non-drive-type electrical system 60 can be implemented as modules, for example, by mounting electronic components on a single substrate, or by mounting electronic components on multiple substrates separately. When at least one of the drive-type electrical system 10, the power supply system 40, and the non-drive-type electrical system 60 is implemented as a module, it has the advantage that the inspection, repair, and replacement of these systems become easier.

[0043] Next, refer to Figure 2 The hardware structure of the vehicle control device according to the embodiment will be described. Figure 2 This is a diagram illustrating an example of the hardware structure of a vehicle control device according to an embodiment. Figure 2The vehicle control device 80 shown is, for example, an electronic control unit (ECU) mounted on vehicle 1. Figure 2 As shown, the vehicle control device 80 includes a processor 81, an input interface 82, an output interface 83, and a storage device 84.

[0044] The processor 81 is, for example, a central processing unit (CPU), which reads and executes the vehicle control program 800, described later, to implement the various functions of the vehicle control device 80. The processor 81 can also read and execute programs other than the vehicle control program 800 to implement the various functions of the vehicle 1.

[0045] Input interface 82 is an interface circuit used to receive data from electronic control units other than vehicle control device 80, sensors mounted on vehicle 1, etc. Input interface 82 receives data transmitted via CAN (Controller Area Network), LIN (Local Interconnect Network), etc.

[0046] Output interface 83 is an interface circuit used to transmit data representing the results calculated by processor 81 based on data received from input interface 82. Output interface 83 transmits data via CAN, LIN, etc.

[0047] The storage device 84 is, for example, RAM (Random Access Memory), which pre-stores a program such as a vehicle control program 800 that is read and executed by the processor 81. The storage device 84 may also have a storage area for storing data representing the results calculated by the processor 81.

[0048] Next, refer to Figure 3 The software structure of the vehicle control device according to the embodiment will be described. Figure 3 This is a diagram illustrating an example of the software structure of a vehicle control device according to an embodiment. (As shown...) Figure 3 As shown, the vehicle control device 80 is mounted on the vehicle 1 and includes an electromagnetic contactor control unit 810, a first grounding determination unit 821, and a second grounding determination unit 822.

[0049] At least a portion of the functions of the vehicle control device 80 are implemented, for example, by executing a vehicle control program 800 as software by a processor 81, which is hardware. At least a portion of the functions of the vehicle control device 80 can also be implemented by hardware (circuit unit; including circuitry) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), GPU (Graphics Processing Unit), etc., or can be implemented through the coordinated cooperation of software and hardware.

[0050] The electromagnetic contactor control unit 810 determines whether the non-drive electrical system 60 operates using the DC power supply 11 included in the drive electrical system 10.

[0051] In cases where the non-drive-system electrical system 60 operates using the DC power supply 11, examples include: the DC power supply 41 is a solar panel, and the vehicle 1 is being driven at night or in rainy weather, therefore the DC power supply 41 cannot generate DC power. Alternatively, the DC power supply 41 is a battery, and the battery's State of Charge (SOC) is below a specified charging rate, therefore the DC power supply 41 cannot provide sufficient DC power to drive the vehicle 1. Or, the vehicle 1 is started. Or, a person is detected inside the vehicle 1 by a human detection sensor mounted on the vehicle 1. In these cases, the electromagnetic contactor control unit 810 determines that the non-drive-system electrical system 60 is operating using the DC power supply 11.

[0052] On the other hand, in cases where the non-drive electrical system 60 does not operate using the DC power supply 11, examples include: the DC power supply 41 is a solar panel, and the vehicle 1 is being driven during a sunny day, thus the DC power supply 41 can generate DC power. Alternatively, the DC power supply 41 is a battery, and the battery's State of Charge (SOC) exceeds a predetermined charging rate, thus the DC power supply 41 can provide sufficient DC power to enable the vehicle 1 to operate. Or, the ignition of the vehicle 1 is stopped. Or, no person is detected inside the vehicle 1 by the human detection sensor mounted on the vehicle 1. In these cases, the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the DC power supply 11.

[0053] Furthermore, when the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 is operating using the DC power supply 11 included in the drive electrical system 10, it executes a first control process to set the electromagnetic contactor 71 and electromagnetic contactor 72, which are examples of the first electromagnetic contactors, to the on state.

[0054] On the other hand, when the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the DC power supply 11 included in the drive electrical system 10, it executes a first control process to set the electromagnetic contactor 71 and electromagnetic contactor 72, which are examples of the first electromagnetic contactors, to a non-conducting state.

[0055] The electromagnetic contactor control unit 810 determines whether the non-drive electrical system 60 operates using the power supply system 40.

[0056] Examples of situations where the non-drive electrical system 60 operates using the power supply system 40 include: using auxiliary equipment 61 while the vehicle 1 is parked, and using the vehicle 1 as a room; or, the DC power supply 41 being a solar panel, and the vehicle 1 being driven during a sunny day, thus generating DC power; or, the DC power supply 41 being a battery with a charging rate exceeding a predetermined rate, thus providing sufficient DC power for driving the vehicle 1. In these cases, the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 is operating using the power supply system 40.

[0057] On the other hand, in cases where the non-drive electrical system 60 does not operate using the power supply system 40, examples include: the DC power supply 41 is a solar panel, and the vehicle 1 is being driven at night or in rainy weather, therefore the DC power supply 41 cannot generate DC power. Alternatively, the DC power supply 41 may be a battery, and the battery's charging rate may be below a specified rate, therefore the DC power supply 41 cannot provide sufficient DC power to drive the vehicle 1. In these cases, the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the power supply system 40.

[0058] Furthermore, when the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 is operating using the power supply system 40, it executes a second control process to set the electromagnetic contactors 51 and 52, which are examples of second electromagnetic contactors, to the on state.

[0059] On the other hand, when the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the power supply system 40, it executes a second control process to set the electromagnetic contactors 51 and 52, which are examples of second electromagnetic contactors, to a non-conducting state.

[0060] The electromagnetic contactor control unit 810 uses, for example, both the DC power supply 11 and the power system 40 to operate the auxiliary equipment 61, and when the vehicle 1 is moving, sets the electromagnetic contactors 51, 52, 71 and 72 to the conducting state.

[0061] The first grounding determination unit 821 determines whether the first electromagnetic contactor is in a conducting state. That is, the first grounding determination unit 821 determines whether electromagnetic contactors 71 and 72 are in a conducting state.

[0062] When the first grounding determination unit 821 determines that the electromagnetic contactors 71 and 72 are in a conducting state, it determines, based on the first parasitic capacitance data to ground, whether the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first conducting state threshold.

[0063] Furthermore, if the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first conduction state threshold, it determines that the drive system electrical assembly system 10 is grounded. On the other hand, if the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 is below the first conduction state threshold, it determines that the drive system electrical assembly system 10 is not grounded.

[0064] On the other hand, when the first grounding determination unit 821 determines that the electromagnetic contactors 71 and 72 are in a non-conducting state, it determines, based on the first grounding parasitic capacitance data mentioned above, whether the grounding parasitic capacitance of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first non-conducting state threshold.

[0065] Furthermore, if the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first non-conducting state threshold, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is grounded. Conversely, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is not grounded.

[0066] The second grounding determination unit 822 determines whether the second electromagnetic contactor is in a conducting state. That is, the second grounding determination unit 822 determines whether electromagnetic contactors 51 and 52 are in a conducting state.

[0067] When the second grounding determination unit 822 determines that the electromagnetic contactors 51 and 52 are in the on state, it determines, based on the above-mentioned second parasitic capacitance data to ground, whether the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second on state threshold.

[0068] Furthermore, if the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60, as measured by the second grounding sensor 63, exceeds the second conduction state threshold, then the drive electrical system 10 is grounded. On the other hand, if the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60, as measured by the second grounding sensor 63, is below the second conduction state threshold, then the drive electrical system 10 is not grounded.

[0069] On the other hand, when the second grounding determination unit 822 determines that the electromagnetic contactors 51 and 52 are in a non-conducting state, it determines, based on the above-mentioned second parasitic capacitance data to ground, whether the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second non-conducting state threshold.

[0070] Furthermore, if the second grounding determination unit 822 determines that the non-drive electrical system 60 is grounded when it determines that the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second non-conducting state threshold, the second grounding determination unit 822 determines that the non-drive electrical system 60 is not grounded.

[0071] Next, refer to Figure 4 The first control process performed by the vehicle control device of the embodiment will be described. Figure 4This is a diagram illustrating an example of the first control process performed by the vehicle control device of the embodiment.

[0072] In step S41, the electromagnetic contactor control unit 810 determines whether the non-drive electrical system 60 operates using the DC power supply 11 included in the drive electrical system 10. If the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 operates using the DC power supply 11 included in the drive electrical system 10 (step S41: Yes), the process proceeds to step S42. On the other hand, if the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the DC power supply 11 included in the drive electrical system 10 (step S41: No), the process proceeds to step S43.

[0073] In step S42, the electromagnetic contactor control unit 810 sets the first electromagnetic contactor to the on state. That is, the electromagnetic contactor control unit 810 sets electromagnetic contactors 71 and 72 to the on state.

[0074] In step S43, the electromagnetic contactor control unit 810 sets the first electromagnetic contactor to a non-conducting state. That is, the electromagnetic contactor control unit 810 sets electromagnetic contactors 71 and 72 to a non-conducting state.

[0075] Next, refer to Figure 5 The second control process performed by the vehicle control device of the embodiment will be described. Figure 5 This is a diagram illustrating an example of a second control process performed by the vehicle control device of the embodiment.

[0076] In step S51, the electromagnetic contactor control unit 810 determines whether the non-drive electrical system 60 operates using the power supply system 40. If the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 operates using the power supply system 40 (step S51: Yes), the process proceeds to step S52. On the other hand, if the electromagnetic contactor control unit 810 determines that the non-drive electrical system 60 does not operate using the power supply system 40 (step S51: No), the process proceeds to step S53.

[0077] In step S52, the electromagnetic contactor control unit 810 sets the second electromagnetic contactor to the ON state. That is, the electromagnetic contactor control unit 810 sets both electromagnetic contactors 51 and 52 to the ON state.

[0078] In step S53, the electromagnetic contactor control unit 810 sets the second electromagnetic contactor to a non-conducting state. That is, the electromagnetic contactor control unit 810 sets electromagnetic contactors 51 and 52 to a non-conducting state.

[0079] Next, refer to Figure 6 The processing performed by the first grounding determination unit of the embodiment will be explained. Figure 6 This is a flowchart illustrating an example of the process performed by the first grounding determination unit of the embodiment.

[0080] In step S61, the first grounding determination unit 821 determines whether the first electromagnetic contactor is in a conducting state. That is, the first grounding determination unit 821 determines whether electromagnetic contactors 71 and 72 are in a conducting state. If the first grounding determination unit 821 determines that the first electromagnetic contactor is in a conducting state (step S61: Yes), the process proceeds to step S62. On the other hand, if the first grounding determination unit 821 determines that the first electromagnetic contactor is in a non-conducting state (step S61: No), the process proceeds to step S65.

[0081] In step S62, the first grounding determination unit 821 determines whether the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first conduction state threshold. If the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first conduction state threshold (step S62: Yes), the process proceeds to step S63. On the other hand, if the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 is below the first conduction state threshold (step S62: No), the process proceeds to step S64.

[0082] In step S63, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is grounded.

[0083] In step S64, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is not grounded.

[0084] In step S65, the first grounding determination unit 821 determines whether the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first non-conducting state threshold. If the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 exceeds the first non-conducting state threshold (step S65: Yes), the process proceeds to step S66. On the other hand, if the first grounding determination unit 821 determines that the parasitic capacitance to ground of the drive system electrical assembly system 10 measured by the first grounding sensor 15 is below the first non-conducting state threshold (step S65: No), the process proceeds to step S67.

[0085] In step S66, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is grounded.

[0086] In step S67, the first grounding determination unit 821 determines that the drive system electrical assembly system 10 is not grounded.

[0087] Next, refer to Figure 7 The processing performed by the second grounding determination unit of the embodiment will be explained. Figure 7 This is a flowchart illustrating an example of the process performed by the second grounding determination unit of the embodiment.

[0088] In step S71, the second grounding determination unit 822 determines whether the second electromagnetic contactor is in a conducting state. That is, the second grounding determination unit 822 determines whether electromagnetic contactors 51 and 52 are in a conducting state. If the second grounding determination unit 822 determines that the second electromagnetic contactor is in a conducting state (step S71: Yes), the process proceeds to step S72. On the other hand, if the second grounding determination unit 822 determines that the second electromagnetic contactor is in a non-conducting state (step S71: No), the process proceeds to step S75.

[0089] In step S72, the second grounding determination unit 822 determines whether the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second conduction state threshold. If the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second conduction state threshold (step S72: Yes), the process proceeds to step S73. On the other hand, if the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 is below the second conduction state threshold (step S72: No), the process proceeds to step S74.

[0090] In step S73, the second grounding determination unit 822 determines that the non-drive electrical system 60 is grounded.

[0091] In step S74, the second grounding determination unit 822 determines that the non-drive electrical system 60 is not grounded.

[0092] In step S75, the second grounding determination unit 822 determines whether the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second non-conducting state threshold. If the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 exceeds the second non-conducting state threshold (step S75: Yes), the process proceeds to step S76. On the other hand, if the second grounding determination unit 822 determines that the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 63 is below the second non-conducting state threshold (step S75: No), the process proceeds to step S77.

[0093] In step S76, the second grounding determination unit 822 determines that the non-drive electrical system 60 is grounded.

[0094] In step S77, the second grounding determination unit 822 determines that the non-drive electrical system 60 is not grounded.

[0095] The vehicle 1 and vehicle control device 80 of the embodiment have been described above. When the non-drive electrical system 60 does not operate using the DC power supply 11 included in the drive electrical system 10, the vehicle control device 80 executes a first control process to set the first electromagnetic contactor to a non-conducting state. Therefore, when the non-drive electrical system 60 does not operate using the DC power supply 11 included in the drive electrical system 10, the vehicle 1 sets the first electromagnetic contactor to a non-conducting state, reducing the time required to supply power from the drive electrical system 10 to the non-drive electrical system 60.

[0096] When the non-drive electrical system 60 is not operating using the power supply system 40, the vehicle control device 80 executes a second control process to deactivate the second electromagnetic contactor. As a result, when the non-drive electrical system 60 is not operating using the power supply system 40, the second electromagnetic contactor is deactivated, reducing the time required to supply power from the power supply system 40 to at least one of the non-drive electrical system 60 and the drive electrical system 10.

[0097] Therefore, vehicle 1 can reduce the time required to supply power to at least one of the electronic devices included in the non-drive system electrical system 60 and the electronic devices included in the drive system electrical system 10, thereby suppressing the deterioration of these electronic devices.

[0098] The first grounding determination unit 821 determines that the drive system electrical system 10 is grounded when the first electromagnetic contactor is in the on state and the parasitic capacitance to ground of the drive system electrical system 10 measured by the first grounding sensor 15 included in the drive system electrical system 10 exceeds the first on state threshold. Thus, the vehicle 1 uses the first on state threshold to determine whether the drive system electrical system 10 is grounded. This first on state threshold is set according to the possible range of values ​​for the parasitic capacitance to ground of the drive system electrical system 10 when the first electromagnetic contactor is in the on state.

[0099] On the other hand, the first grounding determination unit 821 determines that the drive system electrical system 10 is grounded when the first electromagnetic contactor is in a non-conducting state and the parasitic capacitance to ground of the drive system electrical system 10 measured by the first grounding sensor 15 exceeds a first non-conducting state threshold, which is different from the first conducting state threshold. Thus, the vehicle 1 uses the first non-conducting state threshold to determine whether the drive system electrical system 10 is grounded. This first non-conducting state threshold is set according to the possible range of values ​​of the parasitic capacitance to ground of the drive system electrical system 10 when the first electromagnetic contactor is in a non-conducting state.

[0100] Therefore, in either the case where the first electromagnetic contactor is in the conducting state or the case where the first electromagnetic contactor is in the non-conducting state, the vehicle 1 can accurately determine whether the drive system electrical system 10 is grounded.

[0101] The second grounding determination unit 822 determines that the non-drive electrical system 60 is grounded when the second electromagnetic contactor is in the on state and the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 64 included in the non-drive electrical system 60 exceeds the second on-state threshold. Thus, the vehicle 1 uses the second on-state threshold to determine whether the non-drive electrical system 60 is grounded. This second on-state threshold is set according to the possible range of values ​​for the parasitic capacitance to ground of the non-drive electrical system 60 when the second electromagnetic contactor is in the on state.

[0102] On the other hand, when the second grounding determination unit 822 determines that the non-drive electrical system 60 is grounded if the second electromagnetic contactor is in a non-conducting state and the parasitic capacitance to ground of the non-drive electrical system 60 measured by the second grounding sensor 64 exceeds a second non-conducting state threshold, which is different from the second conducting state threshold, the vehicle 1 uses the second non-conducting state threshold to determine whether the non-drive electrical system 60 is grounded. This second non-conducting state threshold is set according to the possible range of values ​​for the parasitic capacitance to ground of the non-drive electrical system 60 when the second electromagnetic contactor is in a non-conducting state.

[0103] Therefore, in either the case where the second electromagnetic contactor is in the conducting state or the case where the second electromagnetic contactor is in the non-conducting state, vehicle 1 can accurately determine whether the non-drive electrical system 60 is grounded.

[0104] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the vehicle, vehicle control device, vehicle control program, vehicle control method, and storage medium are not limited to the above embodiments, and various modifications, substitutions, combinations, and design changes can be made without departing from the spirit of the present invention.

[0105] The effects described above for the embodiments of the present invention are merely illustrative examples. Therefore, in addition to the effects described above, the embodiments of the present invention can also achieve other effects that those skilled in the art can understand based on the description of the above embodiments.

Claims

1. A vehicle, comprising: The drive system electrical system supplies power to the drive system; Non-drive system electrical system, which supplies power to the non-drive system; A first electromagnetic contactor is electrically connected to the drive system electrical system and the non-drive system electrical system. The second electromagnetic contactor is electrically connected to the power supply system that supplies power to the non-drive electrical system and the non-drive electrical system. An electromagnetic contactor control unit performs at least one of a first control process that sets the first electromagnetic contactor to a non-conducting state when the non-drive electrical system does not operate using the DC power supply included in the drive electrical system, and a second control process that sets the second electromagnetic contactor to a non-conducting state when the non-drive electrical system does not operate using the power supply system. as well as The first grounding determination unit determines that the drive system electrical assembly system is grounded when the first electromagnetic contactor is in a conducting state and the parasitic capacitance to ground of the drive system electrical assembly system measured by the first grounding sensor included in the drive system electrical assembly system exceeds a first conducting state threshold; and determines that the drive system electrical assembly system is grounded when the first electromagnetic contactor is in a non-conducting state and the parasitic capacitance to ground of the drive system electrical assembly system measured by the first grounding sensor exceeds a first non-conducting state threshold that is different from the first conducting state threshold.

2. A vehicle, comprising: The drive system electrical system supplies power to the drive system; Non-drive system electrical system, which supplies power to the non-drive system; A first electromagnetic contactor is electrically connected to the drive system electrical system and the non-drive system electrical system. The second electromagnetic contactor is electrically connected to the power supply system that supplies power to the non-drive electrical system and the non-drive electrical system. An electromagnetic contactor control unit performs at least one of a first control process that sets the first electromagnetic contactor to a non-conducting state when the non-drive electrical system does not operate using the DC power supply included in the drive electrical system, and a second control process that sets the second electromagnetic contactor to a non-conducting state when the non-drive electrical system does not operate using the power supply system. as well as The second grounding determination unit determines that the non-drive electrical system is grounded when the second electromagnetic contactor is in the on state and the parasitic capacitance to ground of the non-drive electrical system, as measured by the second grounding sensor included in the non-drive electrical system, exceeds the second on state threshold; and determines that the non-drive electrical system is grounded when the second electromagnetic contactor is in the off state and the parasitic capacitance to ground of the non-drive electrical system, as measured by the second grounding sensor, exceeds the second off state threshold, which is different from the second on state threshold.

3. The vehicle according to claim 1 or 2, wherein, The vehicle also has the aforementioned power system.

4. A vehicle control device, wherein, The vehicle control device includes an electromagnetic contactor control unit that performs at least one of a first control process and a second control process. The first control process involves setting a first electromagnetic contactor electrically connected to the non-drive system and the drive system to a non-conducting state when the non-drive system electrical system supplying power to the vehicle does not operate using the DC power supply included in the drive system electrical system supplying power to the vehicle's drive system. The second control process involves setting a second electromagnetic contactor electrically connected to the non-drive system electrical system and the power supply system to a non-conducting state when the non-drive system electrical system does not operate using the power supply system supplying power to the non-drive system electrical system. The electromagnetic contactor control unit determines that the drive system electrical system is grounded when the first electromagnetic contactor is in a conducting state and the parasitic capacitance to ground of the drive system electrical system, as measured by the first grounding sensor included in the drive system electrical system, exceeds a first conducting state threshold. Conversely, it determines that the drive system electrical system is grounded when the first electromagnetic contactor is in a non-conducting state and the parasitic capacitance to ground of the drive system electrical system, as measured by the first grounding sensor, exceeds a first non-conducting state threshold that is different from the first conducting state threshold.

5. A storage medium storing a vehicle control program, wherein, The vehicle control program enables the computer to implement vehicle control functions with an electromagnetic contactor control unit. The electromagnetic contactor control unit executes at least one of a first control process and a second control process. The first control process involves setting a first electromagnetic contactor electrically connected to the non-drive system and the drive system to a non-conducting state when the non-drive system electrical system supplying power to the vehicle does not operate using the DC power supply included in the drive system electrical system supplying power to the vehicle's drive system. The second control process involves setting a second electromagnetic contactor electrically connected to the non-drive system electrical system and the power system to a non-conducting state when the non-drive system electrical system does not operate using the power supply system supplying power to the non-drive system electrical system. The electromagnetic contactor control unit determines that the drive system electrical system is grounded when the first electromagnetic contactor is in a conducting state and the parasitic capacitance to ground of the drive system electrical system, as measured by the first grounding sensor included in the drive system electrical system, exceeds a first conducting state threshold. Conversely, it determines that the drive system electrical system is grounded when the first electromagnetic contactor is in a non-conducting state and the parasitic capacitance to ground of the drive system electrical system, as measured by the first grounding sensor, exceeds a first non-conducting state threshold that is different from the first conducting state threshold.

6. A vehicle control method, wherein, The vehicle control method causes the computer to execute at least one of a first control process and a second control process, and to execute a first grounding determination process. The first control process involves setting a first electromagnetic contactor electrically connected to both the non-drive system and the drive system to a non-conducting state when the non-drive system electrical system supplying power to the vehicle's non-drive system is not operating using the DC power supply included in the drive system electrical system supplying power to the vehicle's drive system. The second control process involves setting a second electromagnetic contactor electrically connected to both the non-drive system electrical system and the power supply system to a non-conducting state when the non-drive system electrical system is not operating using the power supply system supplying power to the non-drive system electrical system. The first grounding determination process determines that the drive system electrical system is grounded when the first electromagnetic contactor is in the conducting state and the parasitic capacitance to ground of the drive system electrical system measured by the first grounding sensor included in the drive system electrical system exceeds the first conducting state threshold. Conversely, it determines that the drive system electrical system is grounded when the first electromagnetic contactor is in the non-conducting state and the parasitic capacitance to ground of the drive system electrical system measured by the first grounding sensor exceeds the first non-conducting state threshold, which is different from the first conducting state threshold.

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