Management device and information processing method

Abstract

To prevent batteries from running out while suppressing a main battery of a vehicle from being exhausted by setting timing for performing supplementary charging from the main battery to a sub-battery based on a temperature forecast.SOLUTION: A management device manages the remaining power of a sub-battery of a vehicle that includes a main battery and the sub-battery. The management device acquires remaining power information of the sub-battery at the time when the vehicle starts parking. The management device predicts a remaining power drop timing at which the remaining power of the sub-battery falls below a threshold while the vehicle is parked, based on the acquired remaining power information. The management device obtains a temperature forecast for an area where the vehicle is parked after the vehicle starts parking. The management device sets supplementary charging timing for performing supplementary charging of the sub-battery using power of the main battery to a timing earlier than the predicted remaining power drop timing based on the temperature forecast.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a management device and an information processing method.

Background Art

[0002] In recent years, in order to enable more people to access affordable, reliable, sustainable, and advanced energy, research and development have been conducted on secondary batteries that contribute to energy efficiency and charging and discharging of vehicles equipped with secondary batteries.

[0003] Patent Document 1 discloses a technique for giving a charging instruction to an auxiliary battery without constantly monitoring the state of a vehicle based on the state of the stored auxiliary battery for a vehicle whose power is off, such as when parked. Patent Document 2 also discloses a technique for controlling power supply to a battery or discharging from the battery according to an index of the chargeable and dischargeable amount of the battery and an index of the charging and discharging demand in a specific area.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in technologies related to charging and discharging of secondary batteries and vehicles equipped with secondary batteries, the charging efficiency of secondary batteries depends on the temperature. For example, on snowy days or when the temperature is low, the charging speed decreases, which is an issue. In Patent Documents 1 and 2, the influence of such temperature on charging is not considered, and there are cases where sufficient charging cannot be performed due to temperature changes.

[0006] To solve the above-mentioned problems, this invention aims to prevent battery drain while suppressing the consumption of the vehicle's main battery by setting the timing for supplemental charging from the main battery to the sub-battery based on temperature forecasts. This will ultimately contribute to energy efficiency. [Means for solving the problem]

[0007] According to the present invention, A management device for managing the remaining charge of a sub-battery in a vehicle having a main battery and a sub-battery, A means for acquiring remaining charge information of the sub-battery at the start of parking the vehicle, Based on the remaining charge information, a prediction means predicts the timing of the remaining charge of the sub-battery when the remaining charge falls below a threshold while the vehicle is parked. A temperature forecast acquisition means for acquiring a temperature forecast for the parking area of ​​the vehicle after the vehicle has started to be parked, A setting means for setting the timing of supplemental charging of the sub-battery using the power of the main battery to a timing earlier than the remaining charge decrease timing predicted by the prediction means, A usage prediction means for predicting the timing of use of the vehicle after it has been parked, Equipped with, The setting means sets the supplemental charging timing based on the temperature forecast. Furthermore, if the remaining charge decrease timing predicted by the prediction means arrives before the usage timing predicted by the usage prediction means, the supplemental charging timing is set. do, A management device characterized by the above is provided. [Effects of the Invention]

[0008] According to the present invention, by setting the timing for supplemental charging from the main battery to the sub-battery based on the temperature forecast, it is possible to suppress battery drain while reducing the consumption of the vehicle's main battery. [Brief explanation of the drawing]

[0009] [Figure 1] A diagram showing an example of a sub-battery remaining charge management system according to one embodiment of the present invention. [Figure 2]A block diagram showing an example of the hardware configuration of a server, which is a management device. [Figure 3] A block diagram showing an example of the vehicle's hardware configuration. [Figure 4] A flowchart illustrating an example of processing by a management device according to one embodiment. [Modes for carrying out the invention]

[0010] The embodiments will be described in detail below with reference to the attached drawings. Note that the following embodiments do not limit the invention as defined in the claims, and not all combinations of features described in the embodiments are essential to the invention. Two or more of the features described in the embodiments may be combined in any way. Furthermore, identical or similar configurations will be given the same reference numeral, and redundant descriptions will be omitted.

[0011] A management device according to one embodiment of the present invention manages the remaining charge of a sub-battery in a vehicle having a main battery and a sub-battery. In particular, the management device according to this embodiment acquires information on the remaining charge of the sub-battery when the vehicle starts to park, and predicts the timing of the sub-battery's charge drop below a threshold while the vehicle is parked, based on the acquired remaining charge information. Next, the management device acquires a temperature forecast for the parking area after the vehicle starts to park, and sets the timing for supplemental charging, in which the sub-battery is supplementally charged using the power of the main battery, to a timing earlier than the predicted charge drop timing based on the temperature forecast. In this embodiment, the management device is a server and sets the timing of supplemental charging by acquiring various information from the vehicle, but this is just an example and the device is not limited to this configuration.

[0012] [system] The system including the management device according to this embodiment will be described below with reference to Figure 1. Figure 1 shows a management system for setting the timing of supplemental charging of the vehicle 110, which is managed by the management device (server) 100 according to this embodiment. The management device according to this embodiment is the server 100, which is connected to the vehicle 110 via the network 120 so as to be able to communicate. In this embodiment, the server 100 is also connected to the weather forecast server 130 and obtains weather forecast information, including temperature forecasts.

[0013] Figure 2 is a block diagram showing an example of the hardware configuration of the server 100 according to this embodiment. The server 100 includes a processing unit 201, a storage unit 202, and a communication unit 203. The processing unit 201 is a processor, such as a CPU, and executes programs stored in the storage unit 202. The storage unit 202 is a storage device such as RAM, ROM, or a hard disk. The communication unit 203 includes a wired or wireless communication interface that can communicate with the vehicle 110 or the weather forecast server 130 via a communication network.

[0014] The storage unit 202 stores various data in addition to the program executed by the processing unit 201. The program may be installed on the server 100 from a storage medium such as a CD-ROM. In the example in Figure 2, a database (DB) 221 is shown as an example of data stored in the storage unit 202. DB221 is a database in which information about the vehicle 110 is registered, and DB221 is sometimes referred to as the vehicle DB. DB221 can store various information about the vehicle, such as usage information indicating the usage status or usage settings of the vehicle 110 by the user, or information about the vehicle 110's sub-battery 313, which will be described later.

[0015] FIG. 3 is a block diagram showing an example of the hardware configuration of the server 100 according to the present embodiment. The vehicle 110 according to the present embodiment is a vehicle driven by an electric motor 315 having a main battery 311 which is a secondary battery and a sub-battery 313. The vehicle 110 according to the present embodiment includes, as an in-vehicle device, a main battery 311, a converter 312, a sub-battery 313, a control unit 314, a motor 315, an ECU 316, and a communication unit 317.

[0016] The main battery 311 is a power source for driving the motor 315 of the vehicle, and in the present embodiment, the sub-battery 313 is charged using the power of the main battery 311. The voltage of the main battery 311 may be, for example, 150 V or more, 200 V or more, 250 V or more, or 280 V or more. Also, the voltage of the main battery may be 450 V or less, 400 V or less, or 300 V or less.

[0017] The sub-battery 313 is a battery that functions as a power source for an ECU (Electronic Control Unit) including a PCU (Power Control Module) or electrical components including accessories such as an audio. The sub-battery 313 according to the present embodiment is a battery with a lower voltage output than the main battery 311, and its voltage is, for example, 12 V. However, the voltage of the sub-battery 313 can be any value according to the ECU that performs control, etc., and may be, for example, 100 V, or may be the same voltage as the main battery. By using a sub-battery with an output of 12 V, it becomes possible to adopt a conventional ECU driven by a 12 V battery. The vehicle 110 provided with such a sub-battery 313 may be, for example, an electric vehicle, or may be a hybrid vehicle additionally provided with an engine. In the present embodiment, the vehicle 110 will be described as an electric vehicle (BEV, Battery Electric Vehicle) that drives a motor by a battery.

[0018] The sub - battery 313 according to this embodiment supplies power to the electrical system of the vehicle 110 as described above. Since the sub - battery 313 supplies power to the control unit 314 which is the control system of the vehicle 110, if the remaining charge of the sub - battery 313 drops too much, the control system stops and cannot send instructions to various electrical systems (hereinafter, this phenomenon is referred to as "battery rise"). Although the battery rise can be prevented by charging the sub - battery 313 using the power of the main battery 311, if the charging is carried out more frequently than necessary, the power of the main battery 311 is consumed and the driving range (AER) decreases. In this embodiment, by charging the sub - battery 313 using the power of the main battery 311 at the charging timing set by the server 100, the battery rise is suppressed while suppressing the consumption of the main battery. The converter 312 is, for example, a DC / DC converter, which drops the current stored in the main battery 311 to a predetermined voltage and supplies it to various in - vehicle devices including the sub - battery 313.

[0019] In this embodiment, the communication unit 317 transmits the remaining amount information of the sub - battery at the start of vehicle parking to the server 100. Here, the start of vehicle parking refers to the timing when the ignition of the vehicle 110 is turned off. However, for example, when the parking brake is used, it is not particularly limited as long as it is the timing when an operation to maintain a stationary state due to vehicle parking is performed. The communication unit 317 transmits the remaining amount information of the sub - battery as the value of the SOC (State Of Charge). The remaining amount information may be expressed by referring to, for example, voltage and temperature. Hereinafter, when simply referred to as "remaining amount information", it refers to the remaining amount information of the sub - battery 313.

[0020] The control unit 314 is, for example, a PCU, which receives power from the sub-battery 313 and controls the vehicle's electrical system. In this embodiment, the control unit 314 may control the supplemental charging of the sub-battery, control the motor 315, or control the ECU 316. Alternatively, the control unit 314 may be implemented as an ECU dedicated to supplemental charging of the sub-battery, and the ECU 316 may control other parts of the vehicle. In this embodiment, the control unit 314 controls the supplemental charging of the sub-battery at a timing corresponding to instructions from the server 100.

[0021] The ECU 316 is a set of various electrical systems installed in the vehicle 110, such as an audio system or an air conditioner. The communication unit 317 sends and receives data with the server 100 via the network 120.

[0022] In the management system illustrated in Figure 1, the server 100 predicts when the vehicle 110 will experience battery failure based on the remaining charge information of the sub-battery 313 at the start of parking. The server 100 sets a threshold for the remaining charge of the sub-battery 313 and estimates the timing at which the remaining charge is expected to fall below the threshold as the timing at which battery failure will occur (remaining charge decrease timing). The following explanation of the processing performed by the server 100 will assume that it is performed by the processing unit 201 shown in Figure 2.

[0023] The threshold used to determine whether or not the battery will run out can be set according to the user's desired conditions, but for example, it should be set in the range of 10% to 30% using the State of Charge (SOC). In addition, considering the charging efficiency due to battery temperature, the threshold for remaining charge information may be set based on predicted temperature information. Here, the predicted temperature information may be forecast information for ambient temperature, the ambient temperature of the vehicle when parked, or the battery temperature after a sufficient amount of time has passed since parking. The server 100 can set the threshold for remaining charge information higher, assuming that the lower the predicted temperature information, the worse the charging efficiency will be.

[0024] The server 100 can calculate the timing of the decrease in remaining charge based on the remaining charge information of the sub-battery 313 and the power consumption (discharge amount) due to the dark current of the sub-battery 313. The amount of discharge due to the dark current of the standby sub-battery 313 may be set in advance based on, for example, the type of vehicle 110, or it may be calculated based on various electrical components such as a car navigation system or drive recorder installed in the vehicle 110, or it may be obtained from records of past consumption. For example, by periodically obtaining remaining charge information from the vehicle 110, the server 100 can calculate a consumption amount such as a 1% decrease in State of Charge (SOC) per day. This may be calculated statistically from the amount of discharge while parked over a predetermined period (for example, one month).

[0025] The server 100 also obtains a temperature forecast for the parking area after the vehicle 110 has started parking. In this embodiment, the server 100 is connected to a weather forecast server 130 that provides weather forecasts, and obtains weather forecast information, including temperature forecasts for a predetermined period for each region, from the weather forecast server 130. However, if a temperature forecast for the parking area of ​​the vehicle 110 can be obtained, it is not necessary to use the weather forecast server 130. For example, the server 100 may make temperature predictions, or it may obtain temperature forecast information stored in the vehicle 110. Here, the temperature forecast will be the minimum temperature for each day (or for a predetermined period), but the average temperature, maximum temperature, etc. may be used depending on the application.

[0026] The server 100 sets the timing for supplemental charging of the sub-battery 313 using the power of the main battery 311, based on the remaining charge information and the temperature forecast for the parking area, to be earlier than the timing for low remaining charge. In this embodiment, the server 100 may set the supplemental charging timing based on the temperature forecast, for example, to prioritize supplemental charging when the temperature is high. Since it is considered that charging can be performed with sufficient efficiency when the temperature is 0°C or higher, the server 100 may set the supplemental charging timing to be when the temperature is 0°C or higher, or similarly, the supplemental charging timing may be set based on a temperature desired by the user. The server 100 may also set the supplemental charging timing to start supplemental charging on a day when charging can be performed efficiently, such as during the daytime on the day with the highest (maximum or average) temperature within a predetermined period (e.g., one week) for which temperature information has been acquired. On the other hand, if the temperature becomes extremely high, such as when the engine compartment temperature exceeds 60°C, it may negatively affect charging. Therefore, supplemental charging may not be performed on days when the temperature is expected to continuously exceed 35°C for a predetermined period (for example, 6 hours). In other words, supplemental charging timings may not be set when predetermined high-temperature conditions are expected to be met. By performing supplemental charging at times when suitable temperature conditions for supplemental charging are met, it becomes possible to efficiently perform supplemental charging of the sub-battery 313.

[0027] The server 100 may also predict the timing of the next use of the vehicle 110 after parking, and if the aforementioned low battery timing occurs before the predicted timing of use, it may set a timing for supplemental charging. In other words, supplemental charging may be performed if it is predicted that the vehicle 110's battery will run out before the next use. To this end, the server 100 can obtain usage information from the vehicle 110 that indicates the user's usage status or usage settings of the vehicle 110, and based on the obtained usage information, it can estimate the timing of the next time the user will use the vehicle 110. For example, the server 100 can obtain usage history data from the vehicle 110 that allows for prediction of usage dates and times, such as "the user uses the vehicle 110 only on certain days of the week," or data that indicates usage dates and times, such as "how many days from now will the user use the vehicle next?"

[0028] The data that allows us to predict the date and time of use by the user may be estimated as the days of the week on which the user frequently uses the vehicle, based on predetermined conditions such as the date and time when the ignition is turned on in the vehicle 110, and the days of the week on which the vehicle is started more than 70% of the time during a predetermined period (e.g., one month). In addition, the data representing the date and time of use by the user may be entered directly by the user into the ECU 316 of the vehicle 110, or it may be entered via an application by inputting it into a mobile terminal (not shown) associated with the user.

[0029] As described above, if the timing of vehicle use after parking is predictable, it is possible to set the timing of supplemental charging by working backward from that timing using the temperature forecast. Here, the server 100 can set the timing of supplemental charging to be at least the time required for supplemental charging according to the temperature forecast, prioritizing supplemental charging when the temperature is high, for example. For example, the server 100 calculates the remaining charge of the sub-battery at the time of use after parking, and if it calculates that the time required to complete supplemental charging is 12 hours based on the temperature forecast, it will start supplemental charging at least 12 hours before that time of use, when the temperature conditions suitable for supplemental charging are met. Alternatively, the server 100 may start setting the timing of supplemental charging if it is predicted that the sub-battery 313 will run out at the predicted time of vehicle use after parking.

[0030] When a supplemental charging timing has been set, the server 100 can send an instruction to the vehicle 110 to start supplemental charging at that timing. When the communication unit 317 receives the instruction to start supplemental charging, it causes the control unit 314 to perform supplemental charging at that timing. Here, the server 100 may start supplemental charging by sending an instruction to start at the supplemental charging timing, or it may send information indicating the supplemental charging timing to the vehicle 110, and the control unit 314 may start supplemental charging at the supplemental charging timing based on that information.

[0031] Figure 4 is a flowchart illustrating an example of the process for managing the remaining charge of the sub-battery 313 performed by the processing unit 201 of the server 100 according to this embodiment. In this embodiment, when the vehicle 110 is parked and the ignition is turned off, the process shown in Figure 4 is started, and the remaining charge information of the sub-battery 313 is transmitted to the server 100. The process shown in Figure 4 is realized, for example, by the CPU of the processing unit 201 reading a program held in ROM or storage unit 202 into RAM and executing it.

[0032] In S401, the server 100 acquires various information from the vehicle 110, including information on the remaining charge of the sub-battery. Here, the server 100 acquires the remaining charge information as SOC. In S402, the server 100 predicts the timing when the sub-battery 313 will run out based on the remaining charge information acquired in S401. In this embodiment, the server 100 predicts the timing when the sub-battery 313 will run out using information indicating the amount of discharge due to the dark current of the vehicle 110 stored in DB221, but in S401, the server 100 may also acquire information indicating the amount of discharge due to the dark current of the vehicle 110 in addition to the remaining charge information from the vehicle 110.

[0033] In S403, the server 100 estimates the timing of the next use of vehicle 110 by the user of vehicle 110. In this embodiment, the usage history of vehicle 110 is stored in DB221, and the server estimates the timing of the next use by referring to that usage history. However, in S401, the server may also obtain the next usage date and time entered by the user from the vehicle.

[0034] In S404, server 100 determines whether the battery will run out before the next usage date and time estimated in S403. If the battery will run out, the process proceeds to S405; if the battery will not run out, the process ends without instructing supplemental charging.

[0035] In S405, server 100 obtains a weather forecast. In this embodiment, server 100 obtains a weather forecast corresponding to the parking area of ​​vehicle 110 from weather forecast server 130 and refers to the temperature forecast included in the weather forecast. Here, server 100 may have already obtained the parking location information of vehicle 110 in S401 as the parking area, or it may use the area corresponding to vehicle 110 stored in DB221 as the parking area.

[0036] In S406, the server 100 sets the timing for supplemental charging of the sub-battery 313 based on the temperature forecast obtained in S405. For example, the server 100 sets the start time for supplemental charging to be during the daytime on the day with the highest minimum temperature within a predetermined period of the acquired temperature forecast (in this case, one week) (for example, 12:00 noon). Alternatively, the server 100 may calculate the start time for supplemental charging based on the temperature forecast so that the supplemental charging is completed on the day when the battery is likely to run out, and set the start time for supplemental charging to be during the daytime on a day prior to the calculated start time when the minimum temperature exceeds the threshold that satisfies the conditions for starting supplemental charging.

[0037] In S407, the server 100 instructs the vehicle 110 to start supplemental charging. As described above, the server 100 may send the start instruction to the vehicle 110 at the start timing of supplemental charging, or it may send an instruction including information indicating the start timing to the vehicle 110 before the start timing.

[0038] This process predicts when the battery will run out based on the remaining charge of the auxiliary battery, and sets a timing for supplemental charging of the auxiliary battery based on the temperature forecast before that timing. This makes it possible to suppress battery drain while minimizing the consumption of the vehicle's main battery.

[0039] Although the processing shown in Figure 4 of this embodiment has been described as being performed by the server 100, some or all of this processing may be performed by the vehicle 110. That is, the control unit of the vehicle 110 can acquire the information and perform the setting of the supplemental charging timing and supplemental charging control. Alternatively, an information and communication terminal held by the administrator may perform the same processing instead of the server 100. In this case, the selection process is executed by a CPU (not shown) built into the information and communication terminal, which loads the selection process program recorded in a storage device such as an HDD into RAM or the like. Here, the selection process program executed by the CPU may be installed in the storage device of the information and communication terminal via a storage medium such as a CD-ROM.

[0040] It should be noted that each process according to this embodiment is assumed to be performed when the vehicle 110 is stopped in a parking lot (i.e., in a parking position where charging is not possible, or when charging has been forgotten) and the battery charge level is decreasing due to dark current. In this embodiment, it has been explained that supplemental charging of the sub-battery 313 is performed while the vehicle is stopped, but it is also possible that supplemental charging is performed while driving, for example. In such cases, while supplemental charging of the sub-battery 311 is performed, power is supplied from the main battery 311 to the control unit 314 via the converter 312. In other words, the main battery may, depending on the situation, perform some or all of the power supply from the sub-battery as described above.

[0041] [Summary of Embodiments] The above embodiments disclose at least the following management device and information processing method.

[0042] 1. The control device (e.g., 100) of the above embodiment is: A management device for managing the remaining charge of a sub-battery in a vehicle (e.g., 110) having a main battery (e.g., 311) and a sub-battery (e.g., 313), A means for acquiring remaining charge information (e.g., 201) for acquiring the remaining charge information of the sub-battery at the start of parking the vehicle, Based on the remaining charge information, a prediction means (e.g., 201) predicts the timing of the remaining charge of the sub-battery when the remaining charge falls below a threshold while the vehicle is parked, A temperature forecast acquisition means (e.g., 201) for acquiring a temperature forecast for the parking area of ​​the vehicle after the vehicle has started to be parked, The system includes a setting means (e.g., 201) that sets the timing for supplemental charging of the sub-battery using the power of the main battery to a timing earlier than the remaining charge decrease timing predicted by the prediction means, The setting means sets the supplemental charging timing based on the temperature forecast. According to this embodiment, it is possible to suppress battery drain while reducing the consumption of the vehicle's main battery.

[0043] 2. In the management device of the above embodiment, The vehicle is equipped with usage prediction means for predicting the timing of use after parking (e.g., S403), The setting means sets the supplemental charging timing when the remaining charge decrease timing predicted by the prediction means arrives before the usage timing predicted by the usage prediction means. According to this embodiment, it is possible to complete the supplemental charging before the vehicle's next use.

[0044] 3. In the management device of the above embodiment, The setting means sets the supplemental charging timing prioritizing the timing when the temperature is high. According to this embodiment, supplemental charging can be performed at a time when the temperature conditions suitable for supplemental charging are met.

[0045] 4. In the management device of the above embodiment, The main battery is a power source for driving the motor of the vehicle. The aforementioned sub-battery is a battery with a lower voltage output than the main battery and serves as a power source for the vehicle's electrical components. According to this embodiment, it becomes possible to properly recharge the auxiliary battery of an electric vehicle.

[0046] 5. The control device of the above embodiment is It is connected to the vehicle's onboard unit (e.g., 107) in a manner that enables communication. The setting means includes an instruction means that transmits an instruction to the in-vehicle unit to start the supplemental charging at the supplemental charging timing set by the setting means (for example, S407). According to this embodiment, it becomes possible to issue a supplemental charging instruction from the management device while suppressing the depletion of the vehicle's main battery.

[0047] 3. In the management device of the above embodiment, The remaining charge information acquisition means acquires the remaining charge information from the in-vehicle device, The temperature forecast acquisition means acquires the temperature forecast for a predetermined period from a temperature forecast server (e.g., 130) via a communication line. According to this embodiment, the management device can predict the timing of supplemental charging based on the acquired remaining battery information and the temperature forecast for a predetermined period.

[0048] 7. In the management device of the above embodiment, The aforementioned management device is an in-vehicle device installed in the vehicle, The aforementioned control device is The system includes a control means for operating a charger that performs supplemental charging of the sub-battery at the supplemental charging timing set by the setting means. According to this embodiment, the timing of supplemental charging can be set by the vehicle's onboard device.

[0049] 8. The information processing method of the above embodiment is: An information processing method performed by a management device (e.g., 100) that manages the remaining charge of a sub-battery in a vehicle having a main battery and a sub-battery, A remaining charge information acquisition step (for example, S401) is performed to acquire the remaining charge information of the sub-battery at the start of parking the vehicle, Based on the remaining charge information, a prediction step (e.g., S402) is performed to predict the timing of the remaining charge of the sub-battery when the remaining charge falls below a threshold while the vehicle is parked. A temperature forecast acquisition step (for example, S405) is performed to acquire a temperature forecast for the parking area of ​​the vehicle after the vehicle has started to be parked. The system includes a setting step (for example, S406) which sets the timing for supplemental charging of the sub-battery using the power of the main battery to a timing earlier than the remaining charge decrease timing predicted by the prediction step, In the setting step, the supplemental charging timing is set based on the temperature forecast. According to this embodiment, it is possible to suppress battery drain while reducing the consumption of the vehicle's main battery.

[0050] Although embodiments of the invention have been described above, the invention is not limited to the above embodiments, and various modifications and changes are possible within the scope of the gist of the invention. [Explanation of symbols]

[0051] 201: Processing Unit, 202: Memory Unit, 203: Communication Unit

Claims

1. A management device for managing the remaining charge of a sub-battery in a vehicle having a main battery and a sub-battery, A means for acquiring remaining charge information of the sub-battery at the start of parking the vehicle, Based on the remaining charge information, a prediction means predicts the timing of the remaining charge of the sub-battery when the remaining charge falls below a threshold while the vehicle is parked. A temperature forecast acquisition means for acquiring a temperature forecast for the parking area of ​​the vehicle after the vehicle has started to be parked, A setting means for setting the timing of supplemental charging of the sub-battery using the power of the main battery to a timing earlier than the remaining charge decrease timing predicted by the prediction means, The vehicle includes a usage prediction means for predicting the timing of use after parking, The setting means sets the supplemental charging timing based on the temperature forecast, and sets the supplemental charging timing if the remaining charge decrease timing predicted by the prediction means arrives before the usage timing predicted by the usage prediction means. A control device characterized by the following features.

2. The management device according to claim 1, characterized in that the setting means sets the supplemental charging timing prioritizing the timing when the temperature is high.

3. The main battery is a power source for driving the motor of the vehicle. The aforementioned sub-battery is a battery with a lower voltage output than the main battery and is a power source for the vehicle's electrical components. The control device according to claim 1 or 2, characterized in that

4. The management device is connected to the vehicle's onboard unit in a manner that allows it to communicate with the vehicle's onboard unit. The aforementioned control device is The setting means provides an instruction means for transmitting a command to start the supplemental charging to the in-vehicle unit at the supplemental charging timing set by the setting means, A control device according to any one of claims 1 to 3, characterized in that

5. The remaining charge information acquisition means acquires the remaining charge information from the in-vehicle device, The temperature forecast acquisition means acquires the temperature forecast for a predetermined period from the temperature forecast server via a communication line. The control device according to claim 4, characterized in that

6. The aforementioned management device is an in-vehicle device installed in the vehicle, The aforementioned control device is The control means includes a control means for operating a charger that performs supplemental charging of the sub-battery at the supplemental charging timing set by the setting means. A control device according to any one of claims 1 to 3, characterized in that

7. An information processing method performed by a management device for managing the remaining charge of a sub-battery in a vehicle having a main battery and a sub-battery, A remaining charge information acquisition step for acquiring the remaining charge information of the sub-battery at the start of parking the vehicle, A prediction step based on the remaining charge information predicts the timing of the remaining charge of the sub-battery when the remaining charge falls below a threshold while the vehicle is parked. A temperature forecast acquisition step to acquire a temperature forecast for the parking area of ​​the vehicle after the vehicle has started to be parked, A setting step to set the timing for supplemental charging of the sub-battery using the power of the main battery to a timing earlier than the remaining charge decrease timing predicted by the prediction step, The system includes a usage prediction step that predicts the timing of use of the vehicle after it has been parked. In the setting step, the supplemental charging timing is set based on the temperature forecast, and the supplemental charging timing is set if the remaining charge decrease timing predicted in the forecast step arrives before the usage timing predicted in the usage forecast step. An information processing method characterized by the following:

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