Vehicle control device

Abstract

Even if the power consumption of the in-vehicle device fluctuates, the maximum amount of power that can be supplied to the battery is supplied. [Solution] When receiving a supply of external power, the control unit 500 includes a required power calculation unit 511 that calculates the required power amount, which is the sum of the amount of power that can be supplied to the first battery 110 and the amount of power required to operate the on-board device 150, an operation state determination unit 512 that determines the operation state of the on-board device 150, and a switching control unit 530 that executes switching control of the switching unit.The control unit 500 supplies external power to the first battery 110 based on the required power amount, and controls the switching unit so that when the on-board device 150 changes from an operating state to a non-operating state while the on-board device 150 is operating and the first battery 110 is receiving a supply of external power, an amount of power equivalent to the amount of power required to operate the on-board device 150 is supplied from the external power to the second battery 120.

Description

[Technical Field]

[0001] The present invention relates to a vehicle control device. [Background technology]

[0002] In recent years, electric vehicles, which use rechargeable secondary batteries to power their traction motors, have been attracting a lot of attention worldwide, especially from the perspective of the Sustainable Development Goals (SDGs).

[0003] In such electric vehicles, on-board equipment such as an air conditioner that conditions the air inside the vehicle cabin is electrically driven, and is supplied with driving power from a battery similar to the battery that supplies power to the driving motor. Therefore, if an on-board device such as an air conditioner that consumes a large amount of power is used frequently while the electric vehicle is traveling, the driving distance of the electric vehicle will be shortened.

[0004] Therefore, a pre-air conditioning system has been disclosed in which the air conditioner is operated using surplus output from a charger while the battery is being charged while the electric vehicle is not in operation, thereby cooling or heating the interior of the vehicle in advance (see, for example, Patent Document 1). By adjusting the temperature inside the vehicle cabin using pre-air conditioning in this way before the vehicle starts to travel, the power consumed by the air conditioning system after the vehicle starts to travel can be reduced, allowing the electric vehicle to travel a longer distance and allowing the driver to get in the vehicle after the cabin space has become comfortable. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-63347 Summary of the Invention [Problem to be solved by the invention]

[0006] The amount of power that a battery can supply fluctuates depending on temperature conditions, and supplying more power than the battery can tolerate can damage the battery's components. A typical example of the uncertain factors in the power consumption is an on-board device such as an air conditioner that consumes a large amount of power. For example, if an occupant is in the vehicle while the battery is being charged, and the occupant repeatedly turns on and off on in-vehicle equipment such as the air conditioner, power consumption may fluctuate significantly faster than the ECU can execute processing control.

[0007] If the amount of power that can be supplied to the battery is 10 kW and the power consumption of onboard equipment such as air conditioning is 1.5 kW, then from the perspective of charging efficiency, it is desirable to supply 11.5 kW of power from an external power source to the battery via a charger. However, if a passenger were to turn on or off an in-vehicle device such as an air conditioner while the battery was charging, the battery would supply more power (11.5 kW) than it could handle, potentially damaging components.

[0008] In response to the above issue, a method has been put into practical use in which the amount of power supplied to the battery is reduced, in other words, the amount of power supplied to the battery is set to the amount of power that can be supplied to the battery.This prevents the supply of more power than the amount that can be supplied to the battery, even if, for example, the occupant repeatedly turns on and off on in-vehicle equipment such as the air conditioning system. However, this method has the problem of reducing the charging efficiency of the battery, resulting in a longer charging time.

[0009] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a vehicle control device that supplies the maximum amount of power that can be supplied to the battery even if the power consumption of the on-board device fluctuates. [Means for solving the problem]

[0010] Form 1: One or more embodiments of the present invention propose a vehicle control device including a first battery, a second battery, a switching unit that switches between the first battery and the second battery as a destination of external power supply, and a control unit, wherein the control unit includes a required power amount calculation unit that calculates a required amount of power that is the sum of the amount of power that can be supplied to the first battery and the amount of power required for the operation of an on-board device when receiving a supply of external power, an operation state determination unit that determines the operation state of the on-board device, and a switching control unit that executes switching control of the switching unit, wherein the control unit supplies the external power to the first battery based on the required amount of power, and when the on-board device changes from an operation state to a non-operation state while the on-board device is operating and the first battery is receiving the supply of external power, controls the switching unit so that an amount of power equivalent to the amount of power required for the operation of the on-board device is supplied from the external power to the second battery.

[0011] Form 2: One or more embodiments of the present invention propose a vehicle control device including a first battery, a second battery, a switching unit that switches the destination of external power supply, and a control unit, wherein the control unit has one or more processors and one or more memories that are communicatively connected to the one or more processors, and when receiving a supply of external power, the one or more processors calculate a required amount of power that is the sum of the amount of power that can be supplied to the first battery and the amount of power required for operation of an on-board device, and supply the external power to the first battery based on the required amount of power, and when the on-board device is operating and the first battery is receiving the supply of external power, the vehicle control device controls the supply of an amount of power from the external power to the second battery that is equal to the amount of power required for operation of the on-board device. [Effects of the Invention]

[0012] According to one or more embodiments of the present invention, it is possible to provide the maximum amount of power that can be supplied to the battery even if the power consumption of the vehicle-mounted device fluctuates. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram showing a configuration of a vehicle control device according to an embodiment of the present invention; [Figure 2] 2 is a diagram showing the configuration of a control unit of the vehicle control device according to the embodiment of the present invention; FIG. [Figure 3] FIG. 3 is a diagram showing a processing flow in a control unit of a vehicle control device according to an embodiment of the present invention. [Figure 4] 3 is a diagram showing the amount of electric power supplied to a battery mounted in a vehicle control device according to an embodiment of the present invention in a time series manner. FIG. [Figure 5] 3 is a diagram showing the amount of electric power supplied to a battery mounted in a vehicle control device according to an embodiment of the present invention in a time series manner. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] <Embodiment> A vehicle control device 1 according to this embodiment will be described with reference to FIGS. 1 to 5. FIG.

[0015] <Configuration of Vehicle Control Device 1> As shown in FIG. 1, the control device of the vehicle 1 according to this embodiment is configured to include a first battery 110, a first BMS (Battery Management System) 111, a second battery 120, a second BMS 121, charging relays 131, 132, a charger 140, an onboard device 150, a first switching unit 160, a second switching unit 180, DC / DC converters 210, 220, an INV (inverter) 230, a first motor generator 240, a second motor generator 250, differentials 261, 262, front wheels 291, rear wheels 292, and a control unit 500.

[0016] The first battery 110 is a rechargeable secondary battery. First battery 110 is, for example, a storage battery such as a lithium ion battery, and is a battery that supplies power mainly to the drive system of the vehicle.

[0017] The first BMS 111 monitors and controls the state of each cell constituting the first battery 110, thereby enabling the first battery 110 to be used safely and for a long period of time. Specifically, the first BMS 111 has a function of measuring the voltage of each battery cell constituting the first battery 110 and the voltage of the entire battery pack, and preventing overcharging and over-discharging. The first BMS 111 also has the function of measuring the discharge current from each battery cell constituting the first battery 110 and the charge current to the battery, checking the usage status and charge state of the battery, and performing appropriate control. Furthermore, the first BMS 111 constantly monitors the temperature of each battery cell that makes up the first battery 110 through a temperature sensor, etc., and has the function of ensuring the safety of the first battery 110 and extending the life of the first battery 110 by using the battery within an appropriate temperature range.

[0018] The second battery 120 is a rechargeable secondary battery. Second battery 120 is, for example, a storage battery such as a lithium ion battery, and is a battery that supplies power to on-board devices and the like mounted on the vehicle.

[0019] The second BMS 121 monitors and controls the state of each cell that constitutes the second battery 120, thereby enabling the first battery 110 to be used safely and for a long period of time. The second BMS 121 also has the same functions as the first BMS 111, and therefore a detailed description thereof will be omitted.

[0020] In order to charge the first battery 110 or the second battery 120, the charger 140 converts AC power input from a quick charger, for example, into DC power and supplies it to the first battery 110 or the second battery 120. In this embodiment, the charger 140 is connected to the first battery 110 via a first switching unit 160, which will be described later, and is also connected to a first DC / DC converter 210, which will be described later.

[0021] The vehicle-mounted device 150 is a device that is mounted on the vehicle and operates using electric power. In this embodiment, the in-vehicle device 150 is a device that consumes a large amount of power, and an example of this is an air conditioning device. In the present embodiment, the in-vehicle device 150 will be described below as an air conditioning device, but the in-vehicle device 150 may also be a device that consumes a large amount of power, such as a heater.

[0022] The first switching unit 160 is an element that switches the first battery 110 and the charger 140 between a connected state and a disconnected state, and may be, for example, a high-voltage relay. The operating state of the first switching unit 160 is controlled based on a control signal from the control unit 500, which will be described later. In this embodiment, when charging of the first battery 110 starts, the first switching unit 160 switches from the open, non-contact state to the closed, contact state.

[0023] The second switching unit 180 is an element that switches the second battery 120 and the charger 140 between a connected state and a disconnected state, and may be, for example, a high-voltage relay. The operating state of the second switching unit 180 is controlled based on a control signal from the control unit 500, which will be described later. In this embodiment, the second switching unit 180 switches from the non-contact state, which is the open state, to the contact state, which is the closed state, in accordance with the timing at which the charger 140 transitions from the active state to the inactive state.

[0024] The first DC / DC converter 210 is, for example, a non-insulated bidirectional DC-DC converter. The first DC / DC converter 210 is configured to include a plurality of switching elements. The first DC / DC converter 210 has a reference circuit commonly connected to the negative side of the first battery 110 and the negative side of the INV230 described later, a high-voltage circuit connected to the positive side of the INV230, and a low-voltage circuit connected to the positive side of the first battery 110.

[0025] The second DC / DC converter 220 has a reference circuit commonly connected to the negative side of the second battery 120 and the negative side of the INV230 described later, a high-voltage circuit connected to the positive side of the INV230, and a low-voltage circuit connected to the positive side of the second battery 120. In addition, the vehicle-mounted device 150 is connected between the second DC / DC converter 220 and the second switching unit 180, and the negative side of the vehicle-mounted device 150 is connected to the reference circuit, and the positive side of the vehicle-mounted device 150 is connected to the low-voltage circuit.

[0026] INV230 converts DC power supplied from the first DC / DC converter 210 or the second DC / DC converter 220 into AC power, and supplies the AC power with its frequency and voltage varied based on a control signal from the control unit 500, which will be described later, to the first motor generator 240 and the second motor generator 250, which will be described later. Furthermore, in this embodiment, AC power supplied from the charger 140 is supplied to the second battery 120 via the first DC / DC converter 210, the second DC / DC converter 220, and the INV 230, and when the second switching unit 180 is in a connected state, the AC power is charged by the second battery 120.

[0027] The first motor generator 240 combines the starting function of a starter and the power generation function of an alternator. The first motor generator 240 realizes a wide range of technologies, such as idle stop, engine assist while driving, and energy regeneration during deceleration, contributing to improved fuel efficiency. In addition, the first motor generator 240 contributes to improved vehicle mountability through electromechanical integration, quiet starting through belt drive, quick restart and high engine rotation assistance through control technology, high-efficiency power generation through winding technology, and low noise. It should be noted that second motor generator 250 has the same functions and advantages as first motor generator 240, and therefore a detailed description thereof will be omitted.

[0028] The power transmission mechanism 260 includes a reducer, a transmission, and the like.

[0029] The differential gear 270 is a group of gears that absorbs the speed difference between the inner and outer wheels of the vehicle.

[0030] The output shaft of each of the first motor generator 240 and the second motor generator 250 is connected to a power transmission mechanism 260 . The output shaft of the power transmission mechanism 260 is connected to a differential gear 270 , and the power of the first motor generator 240 or the second motor generator 250 is transmitted to an axle 280 via the differential gear 270 to drive wheels 290 .

[0031] The control unit 500 executes the overall processing of the vehicle control device 1 according to this embodiment based on a control program stored in a storage unit (not shown), for example, a ROM (Read Only Memory) or a RAM (Random Access Memory). For example, when a predetermined condition is satisfied, the control unit 500 activates the first switching unit 160 to switch the first battery 110 and the charger 140 between a connected state and a disconnected state. Furthermore, for example, when a predetermined condition is satisfied, the control unit 500 activates the second switching unit 170 to switch the second battery 120 and the charger 140 between a connected state and a disconnected state.

[0032] <Configuration of control unit 500> As shown in FIG. 2, the control unit 500 according to this embodiment includes a processor 510 and a memory 520.

[0033] In this embodiment, when processor 510 receives a supply of external power from charger 140, it calculates the required amount of power, which is the sum of the amount of power that can be supplied to first battery 110 and the amount of power required to operate onboard device 150, and supplies external power to first battery 110 based on the required amount of power.If onboard device 150 changes from an operating state to a non-operating state while first battery 110 is receiving a supply of external power from charger 140, it supplies an amount of power equivalent to the amount of power required to operate onboard device 150 to second battery 120.

[0034] The memory 520 is composed of a ROM, a RAM, or the like, and saves and stores programs and various data. The memory 520 is provided with a storage unit 521, which saves and stores information such as the conditions under which the processor 510 causes the second battery 120 to supply an amount of power equivalent to the amount of power required to operate the in-vehicle device 150.

[0035] <Configuration of the processor 510> As shown in FIG. 2, the processor 510 of the vehicle control device 1 according to this embodiment includes a required power amount calculation unit 511, an operating state determination unit 512, and a switching control unit 513. As shown in FIG. 2, the switching control unit 513, the required power amount calculation unit 511, the operating state determination unit 512, the memory 520, etc. are connected via a bus line BL.

[0036] When external power is supplied via the charger 140, the required power calculation unit 511 calculates the required power by adding together the amount of power that can be supplied to the first battery 110 and the amount of power required to operate the in-vehicle device 150. The calculation result calculated by the required power amount calculation unit 511 is output to the switching control unit 513 via the bus line BL.

[0037] The operating state determination unit 512 determines the operating state of the in-vehicle device 150 . The determination result made by the operating state determination unit 512 is output to the switching control unit 513 via the bus line BL.

[0038] The switching control unit 513 executes switching control for the first switching unit 160 or the second switching unit 180 . In particular, the switching control unit 513 of this embodiment has only one switching control unit that performs ON / OFF operation so as not to charge or discharge between the first battery 110 and the second battery 120, and performs control to charge either the first battery 110 or the second battery 120.

[0039] Specifically, for example, when charging of the first battery 110 starts, the temperature of the first battery 110 rises, and the amount of power that can be supplied to the system increases over time. Also, in Figure 4, since the air conditioning equipment as the in-vehicle unit 150 is in the ON state, the amount of power that can be supplied to the system is the required amount of power obtained by adding the amount of power required by the system to the amount of power required for the air conditioning equipment as the in-vehicle unit 150 to maintain an operating state (see (1) in Figure 4). Therefore, the system is supplied with the same amount of power as the above-mentioned required amount of power from an external power source via the charger 140. Next, when the air conditioning equipment as the in-vehicle unit 150 is turned from ON to OFF, the amount of power required to maintain the air conditioning equipment as the in-vehicle unit 150 in an operating state is no longer available, and the above-mentioned required amount of power decreases and exceeds the amount of power required by the system. Therefore, by turning on the second switching unit 180 and supplying the surplus power to the second battery 120, the supply of excessive power to the first battery 110 is suppressed (see (2) in FIG. 4 and FIG. 5). Then, when the amount of power supplied to the first battery 110 becomes equal to the amount of power required by the system, the second switching unit 180 is controlled to change from ON to OFF (see (3) in FIG. 4 and FIG. 5).

[0040] In other words, based on the required amount of power calculated by the required amount of power calculation unit 511, the switching control unit 513 supplies external power to the first battery 110 via the charger 140, and if the operating state determination unit 512 determines that the in-vehicle device 150 has changed from an operating state to a non-operating state (see (2) in Figure 4, etc.) while the in-vehicle device 150 is operating (see (1) in Figure 4, etc.) and the first battery 110 is receiving external power via the charger 140, the switching control unit 513 executes switching control to close the second switching unit 180 so as to supply to the second battery 120 an amount of power equivalent to the amount of power required to operate the in-vehicle device 150. When the vehicle-mounted device 150 changes from an operating state to a non-operating state, the second switching unit 180 is closed, but since the first battery 110 is supplied with the amount of power that can be supplied to the first battery 110, no discharge occurs from the first battery 110 to the second battery 120.

[0041] <Handling of Vehicle 1> The processing of the vehicle control device 1 according to this embodiment will be described with reference to FIG.

[0042] The control unit 500 determines whether or not a charging operation via the charger 140 has started (step S110). When the control unit 500 determines that the charging operation via the charger 140 has not started ("NO" in step S110), the control unit 500 shifts the processing to a standby mode.

[0043] On the other hand, when the control unit 500 determines that the charging operation via the charger 140 has started ("YES" in step S110), the control unit 500 moves the process to step S120. At this time, the control unit 500 transmits a control signal to the switching control unit 513 to change the first switching unit 160 from the non-connected state to the connected state. When the switching control unit 513 receives the control signal to change the first switching unit 160 from the non-connection state to the connection state, the switching control unit 513 executes control to change the first switching unit 160 from the non-connection state to the connection state (step S120).

[0044] Next, the control unit 500 determines whether or not the in-vehicle device 150 has entered an operating state based on the determination result of the operating state determination unit 512 (step S130). When the control unit 500 determines based on the determination result of the operating state determination unit 512 that the vehicle-mounted device 150 is not in an operating state ("NO" in step S130), the control unit 500 shifts the processing to a standby mode.

[0045] On the other hand, when the control unit 500 determines that the vehicle-mounted unit 150 is in an operating state based on the determination result of the operating state determination unit 512 ("YES" in step S130), it determines whether the vehicle-mounted unit 150 is in a non-operating state (step S140).

[0046] When the control unit 500 determines that the vehicle-mounted device 150 is not in an operating state ("NO" in step S140), the control unit 500 returns the process to step S130 and shifts to the standby mode. On the other hand, when the control unit 500 determines that the in-vehicle device 150 is in an inoperative state ("YES" in step S140), it sends a control signal to the switching control unit 513 to change the second switching unit 180 from a non-connected state to a connected state. When the switching control unit 513 receives the control signal to change the second switching unit 180 from the non-connection state to the connection state, the switching control unit 513 executes control to change the second switching unit 180 from the non-connection state to the connection state (step S160).

[0047] Next, the control unit 500 calculates the amount of power (W B1 ) is the amount of power (W) required by the system. S) (step S160). Then, the control unit 500 calculates the amount of power (W B1 ) is the amount of power (W) required by the system. S ) (“NO” in step S160), the process shifts to standby mode.

[0048] On the other hand, the control unit 500 calculates the amount of power (W B1 ) is the amount of power (W) required by the system. S ) (“YES” in step S160), the control unit 514 transmits a control signal to the switching control unit 513 to change the second switching unit 180 from the connected state to the non-connected state. When the switching control unit 513 receives the control signal for changing the second switching unit 180 from the connection state to the non-connection state, the switching control unit 513 executes control for changing the second switching unit 180 from the connection state to the non-connection state (step S170). Then, the control unit 500 ends the process.

[0049] <Actions and Effects> As described above, the vehicle control device 1 according to this embodiment includes the first battery 110, the second battery 120, the first switching unit 160 that switches the supply destination of external power, the second switching unit 180, and the control unit 500. The control unit 500 includes a required power amount calculation unit 151 that calculates the required power amount, which is the sum of the amount of power that can be supplied to the first battery 110 and the amount of power that is required to operate the on-vehicle device 150, when receiving a supply of external power, an operation state determination unit 152 that determines the operation state of the on-vehicle device 150, and the first switching unit 120. The control unit 500 supplies external power to the first battery 110 based on the required amount of power, and controls the first switching unit 160 or the second switching unit 180 so that, when the on-vehicle device 150 is operating and the first battery is receiving a supply of external power, the on-vehicle device 150 changes from an operating state to a non-operating state, so that an amount of power equivalent to the amount of power required to operate the on-vehicle device 150 is supplied from the external power to the second battery. That is, when control unit 500 receives a supply of external power, it supplies the external power to first battery 110 based on the required amount of power. Then, when the vehicle-mounted device 150 changes from an operating state to a non-operating state while the first battery is receiving a supply of external power, the control unit 500 controls the first switching unit 160 or the second switching unit 180 so as to supply an amount of power from the external power to the second battery that is equal to the amount of power required to operate the vehicle-mounted device 150. Therefore, unlike the conventional method, the amount of power supplied is the sum of the amount of power that can be supplied to the first battery 110 from the standpoint of charging efficiency and the amount of power that can be supplied to the vehicle-mounted device 150, and when the vehicle-mounted device 150 changes from an operating state to a non-operating state, it is possible to prevent the supply of an amount of power that exceeds the capacity of the first battery 110. In addition, when the in-vehicle device 150 is in an operating state, the control unit 500 can supply to the second battery 120 the amount of power obtained by subtracting the amount of power to be supplied to the first battery 110 from the amount of power supplied from external power, as shown in FIG. 5. Therefore, even if the amount of power consumed by the in-vehicle device 150 fluctuates, the maximum amount of power that can be supplied to the first battery 110 and the second battery 120 can be supplied to the batteries.

[0050] The on-board device 150 in the vehicle according to this embodiment is an air conditioning device. The air conditioner as the in-vehicle device 150 is a device that is used frequently throughout the year and consumes a large amount of power. That is, since air conditioners are used frequently and consume a lot of power, they require a larger amount of power than the other in-vehicle devices 150, and the difference in the amount of power required when the air conditioners are ON and OFF is also large. Therefore, the vehicle control device 1 according to this embodiment is particularly effective when the in-vehicle device 150 is an air conditioning device.

[0051] The vehicle control device 1 of the present invention can be realized by recording the processing of the processor 510 on a recording medium that can be read by a computer system, and having the processor 51 read and execute the program recorded on this recording medium. The computer system here includes hardware such as an OS and peripheral devices.

[0052] Furthermore, if a WWW (World Wide Web) system is used, the "computer system" also includes the homepage providing environment (or display environment). The program may also be transmitted from a computer system in which the program is stored in a storage device or the like to another computer system via a transmission medium or by transmission waves in the transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has the function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

[0053] The program may also be for realizing part of the above-mentioned functions. Furthermore, the above-mentioned functions may be realized in combination with a program already recorded in the computer system, that is, a so-called differential file (differential program).

[0054] The above has described in detail an embodiment of the present invention with reference to the drawings, but all vehicle control devices that can be implemented by a person skilled in the art by making appropriate design modifications based on the vehicle control device described above as an embodiment of the present invention also fall within the technical scope of the present invention as long as they include the gist of the present invention. Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications and alterations, and it is understood that these modifications and alterations also fall within the technical scope of the present invention. For example, any embodiment in which a person skilled in the art has appropriately added or deleted components or modified the design, or added or omitted steps or modified conditions, is included within the technical scope of the present invention as long as it contains the gist of the present invention.

[0055] Furthermore, other effects and advantages brought about by the aspects described in this embodiment that are clear from the description in this specification or that can be appropriately thought of by a person skilled in the art are naturally understood to be brought about by the present invention. Various inventions can be formed by appropriately combining the multiple components disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, components from different embodiments may be combined as appropriate. [Explanation of symbols]

[0056] 1; Vehicle control device 110; First Battery 120; Second Battery 140;Charger 150;In-vehicle device 160: First switching section 180; Second switching section 500; control section 510;processor 511;Required electric energy calculation section 512: Operation status determination unit 513: Switching control unit 520;Memory

Claims

1. A control device for a vehicle including a switching unit that switches between a first battery and a second battery that are supply destinations of external power, and a control unit, The control unit a required power amount calculation unit that calculates a required power amount by adding together the amount of power that can be supplied to the first battery and the amount of power that is required to operate an on-board device when external power is supplied; an operating state determination unit that determines an operating state of the vehicle-mounted device; a switching control unit that executes switching control of the switching unit; Including, The control unit supplies the external power to the first battery based on the required power amount, and when the in-vehicle device changes from an operating state to a non-operating state while the first battery is receiving the supply of the external power, A vehicle control device comprising: a control unit for controlling the switching unit so that the amount of power equivalent to the amount of power required to operate the on-board device is supplied from the external power to the second battery.

2. 2. The vehicle control device according to claim 1, wherein the on-board device is an air conditioning device.

3. A vehicle control device including a first battery, a second battery, a switching unit that switches a supply destination of external power, and a control unit, The control unit one or more processors; and one or more memories communicatively coupled to the one or more processors; the one or more processors: When receiving a supply of external power, a required amount of power is calculated by adding together the amount of power that can be supplied to the first battery and the amount of power that is required to operate an on-board device; A vehicle control device characterized by supplying the external power to the first battery based on the required amount of power, and when the on-board device changes from an operating state to a non-operating state while the on-board device is operating and the first battery is receiving the external power, controlling the amount of power equivalent to the amount of power required to operate the on-board device to be supplied from the external power to the second battery.

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