Information processing system, ECU system, and information processing method

Abstract

To provide a technique capable of starting a communication terminal when a battery is charged by an external power supply.SOLUTION: An information processing system comprises: a plurality of ECUs installed in a vehicle provided with a battery capable of being charged by an external power supply; and a communication terminal installed in the vehicle. Therein, the communication terminal is started triggered by detection by a predetermined ECU among the plurality of ECUs, of start of battery charge with the external power supply when the communication terminal is in a sleep state. The communication terminal started by the predetermined ECU acquires alarm information as information about presence / absence of alarm of a device installed in the vehicle, from the plurality of ECUs. The communication terminal transmits, to a predetermined server, the alarm information acquired from the plurality of ECUs.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to an information processing system, an ECU system and an information processing method. [Background technology]

[0002] 2. Description of the Related Art There is known an in-vehicle communication device that transmits abnormality information to an information center when an abnormality occurs in equipment mounted on a vehicle (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-234100 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a technique that can transmit alarm information to a predetermined server even when a battery is being charged by an external power source. [Means for solving the problem]

[0005] The present disclosure relates to a vehicle equipped with a battery that can be charged by an external power source, and a plurality of ECUs (Electronic Control Units) for controlling in-vehicle devices including the battery; and a communication terminal mounted on each of the vehicle and configured to, when the communication terminal is in an activated state, acquire alarm information, which is information relating to the presence or absence of an alarm in the vehicle-mounted device, from the plurality of ECUs and transmit the acquired alarm information to a predetermined server, and when the communication terminal is in a sleep state, stop acquiring the alarm information and transmitting it to the predetermined server. When the communication terminal is in a sleep state, a predetermined ECU among the plurality of ECUs Detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to an active state using a detection of a start of charging of the battery by an external power source as a trigger; The following may be executed.

[0006] The present disclosure can also be understood as an ECU mounted on a vehicle equipped with a battery that can be charged by an external power source. In that case, the ECU may, for example: When the communication terminal mounted on the vehicle is in a sleep state, Detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to a transition state using a detection of a start of charging of the battery by an external power source as a trigger; The control unit may be configured to execute the above steps.

[0007] The present disclosure can also be regarded as an information processing method. In this case, the information processing method includes, for example, An ECU mounted on a vehicle having a battery that can be charged by an external power source, When the communication terminal mounted on the vehicle is in a sleep state, detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to an active state when a start of charging of the battery by an external power source is detected as a trigger; The following may be executed.

[0008] The present disclosure can also be understood as a program for causing an ECU to execute the above-described information processing method, or a non-transitory storage medium storing the program. Effect of the Invention

[0009] According to the present disclosure, it is possible to provide a technique that can transmit alarm information to a predetermined server even when a battery is being charged by an external power source. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing an overview of an in-vehicle system. [Diagram 2] FIG. 2 is a diagram illustrating an example of an ECU mounted on a vehicle. [Diagram 3] FIG. 2 is a diagram illustrating an example of a hardware configuration of components included in the in-vehicle system. [Figure 4] 2 is a block diagram showing an example of a functional configuration of a charging ECU. FIG. [Diagram 5] 2 is a block diagram showing an example of a functional configuration of the communication terminal; [Figure 6] 4 is a sequence diagram showing an example of a process performed by the in-vehicle system when the battery is charged by an external power supply in the embodiment. FIG. [Figure 7] 5 is a flowchart showing a processing routine executed by a charging ECU when charging of a battery by an external power supply is started. [Figure 8] FIG. 11 is a sequence diagram showing an example of a process performed by the in-vehicle system when the battery is charged by an external power supply in the first modification. [Figure 9] FIG. 11 is a sequence diagram showing an example of a process performed by the in-vehicle system when the battery is charged by an external power supply in the second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] In recent years, with the advancement of vehicle communication technologies such as V2X (Vehicle-to-Everything), Vehicles equipped with devices (communication terminals) capable of communicating with vehicles are being developed. In such vehicles, the communication terminals can collect information (alarm information) on the presence or absence of alarms in the devices installed in the vehicle (hereinafter, sometimes referred to as "vehicle-mounted devices") and transmit the collected alarm information to an external server or the like.

[0012] Here, in new energy vehicles such as EVs (Electric Vehicles) and PHVs (Plug-in Hybrid Vehicles), there are cases where laws and regulations require that the above alarm information be periodically transmitted to a server (a specified server) operated by a public institution, etc. In particular, in cases where a vehicle has a battery that can be charged from an external power source, there is a possibility that the vehicle will be required to periodically transmit alarm information to a specified server not only when the vehicle is in operation, but also when the battery is being charged by an external power source.

[0013] Incidentally, the battery is charged by the external power source when the vehicle is stopped. Therefore, there is a possibility that the communication terminal is in a sleep state when the battery is charged by the external power source. When the communication terminal is in an active state, the communication terminal can obtain alarm information and transmit the alarm information to a predetermined server, but when the communication terminal is in a sleep state, the communication terminal cannot obtain alarm information and transmit the alarm information to a predetermined server.

[0014] Therefore, in order to comply with the above-mentioned regulations, a technique is desired that can obtain alarm information and transmit it to a specified server when the battery is being charged by an external power source.

[0015] Therefore, in the information processing system according to the present disclosure, when the communication terminal is in a sleep state, When a specific ECU among multiple ECUs installed in a vehicle detects that charging of the battery from an external power source has started, the ECU triggers the communication terminal to transition from a sleep state to an active state. This enables the communication terminal to acquire alarm information through the multiple ECUs and transmit the acquired alarm information to a specific server.

[0016] According to the information processing system according to the present disclosure, even when the battery is being charged by an external power source, it is possible to transmit alarm information to a predetermined server.

[0017] Here, the predetermined ECU according to the present disclosure may be, for example, an ECU (first ECU) for controlling charging of the battery among multiple ECUs mounted on the vehicle. When the vehicle is in a stopped state, the multiple ECUs mounted on the vehicle may be in a sleep state, similar to the communication terminal. However, when charging of the battery from an external power source starts, if a charging cable is connected to the charging port of the vehicle, a detection signal from a sensor for detecting connection of the charging cable to the charging port or a CPLT (Control Pilot) signal from the external power source may be input. The first ECU is started by inputting a signal or the like to the first ECU. In addition, when timer charging (charging the battery during a preset time period, such as at night) is performed with the charging connector connected in advance to the charging port of the vehicle, the first ECU is started by inputting a signal from the timer to the first ECU at the timing when the charging start time arrives. This allows the first ECU to detect the start of charging the battery from an external power source. Therefore, by using such a first ECU, it becomes possible to start up a communication terminal in a sleep state. As a result, even when the battery is being charged from an external power source, alarm information can be transmitted to a predetermined server.

[0018] The predetermined ECU according to the present disclosure may be a second ECU that is activated by the first ECU when charging of the battery by an external power source is started. The "second ECU" here may be, for example, a second ECU that is activated by the first ECU to monitor the state of the battery (SOC (State of Charge), temperature, etc.) The second ECU is an ECU for managing the above. When charging the battery from an external power source, it is necessary to properly manage the state of the battery during charging. Therefore, when charging of the battery from an external power source starts, the first ECU starts the second ECU as described above. This allows the second ECU to detect the start of charging of the battery from the external power source. Therefore, by using such a second ECU, it is possible to start up the communication terminal in a sleep state.

[0019] The predetermined ECU according to the present disclosure may be a third ECU that is directly connected to the battery through a wiring for detecting the voltage of the battery. This is intended for a vehicle (e.g., a PHV) that is driven by a hybrid system including a motor and an internal combustion engine. In such a vehicle, an ECU (third ECU) for controlling the hybrid system and the battery may be directly connected by a wiring. In such a case, when charging of the battery by an external power source starts, the voltage input to the third ECU through the wiring changes. As a result, the third ECU transitions from a sleep state to an activated state, triggered by the change in the voltage input through the wiring. At that time, the third ECU can detect the start of charging of the battery by the change in the voltage input through the wiring. Therefore, by using such a third ECU, it is possible to activate a communication terminal in a sleep state.

[0020] Here, when starting up the communication terminal, the ECU according to the present disclosure may transmit a first signal to the communication terminal indicating that charging of the battery by the external power source has started, whereby the communication terminal can start acquiring alarm information and transmitting the acquired alarm information to a predetermined server, triggered by receiving the first signal.

[0021] Furthermore, the ECU according to the present disclosure may transmit a second signal indicating that charging of the battery by the external power source has ended to the communication terminal when charging of the battery by the external power source has ended, whereby the communication terminal can end acquisition of alarm information and transmission of the acquired alarm information to the predetermined server using the reception of the second signal as a trigger.

[0022] <Embodiment> Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings. The configurations of the following embodiments are merely examples, and the present disclosure is not limited to the configurations of the embodiments.

[0023] (Overall system configuration) 1 is a diagram showing a schematic configuration of an in-vehicle system to which the present disclosure is applied. The in-vehicle system in this embodiment includes a plurality of ECUs 100 mounted on a vehicle 10 and a communication terminal 200 mounted on the vehicle 10.

[0024] The vehicle 10 in this example is a PHV equipped with a hybrid system including a battery that can be charged by an external power source. The hybrid system includes a battery that can be charged by an external power source, a motor / generator that uses the power of the battery to drive the drive wheels of the vehicle 10 or generates electricity using the operating energy of the drive wheels, an internal combustion engine (hereinafter, sometimes referred to as an "engine") that cooperates with the motor / generator to drive the vehicle 10, and an inverter that converts the power supplied from the battery to the motor / generator from DC to AC or converts the power supplied from the motor / generator to the battery from AC to DC. Note that the vehicle 10 is not limited to a PHV and may be an EV.

[0025] The multiple ECUs 100 are electronic control units for controlling various in-vehicle devices such as the battery, motor generator, engine, and hybrid system. As shown in FIG. 2, the multiple ECUs 100 in this example include an ECU (motor ECU) 101 for controlling the motor generator, an ECU (engine ECU) 102 for controlling the engine, an ECU (battery ECU) 103 for managing the battery state (e.g., SOC or temperature), an ECU (charging ECU) 104 for controlling the charging of the battery, and an ECU (hybrid ECU) 105 for integrated control of the entire hybrid system. The multiple ECUs 100 are connected to each other by a first bus CB100 of the CAN (Controller Area Network) standard. In addition, the multiple ECUs 100 Among these, the ECUs related to the battery (such as the battery ECU 103, the charging ECU 104, and the hybrid ECU 105) are also connected to each other via a second bus CB200 of the CAN standard. Among the battery-related ECUs 103-105, the hybrid ECU 105 is directly connected to the battery via a wiring WR100, and is capable of directly monitoring the voltage of the battery.

[0026] Each of the multiple ECUs 100 has a function of transmitting alarm information to the communication terminal 200 at a predetermined cycle when the vehicle 10 is in a driving state (when the ignition switch or the power switch is in an ON state). Among the multiple ECUs 100, the battery-related ECUs 103-105 have a function of transmitting alarm information to the communication terminal 200 at a predetermined cycle during a period in which the battery is being charged by an external power source, even when the vehicle 10 is in a stopped state (when the ignition switch or the power switch is in an OFF state). Accordingly, among the battery-related ECUs 103-105, the charging ECU 104 also has a function of starting up the communication terminal 200 when charging of the battery by an external power source is started. Such a charging ECU 104 corresponds to a "predetermined ECU (first ECU)" according to the present disclosure. In this embodiment, the battery-related ECUs 103-105 are the same as those of the battery-related ECUs 103-105 of the present disclosure. This corresponds to the "multiple ECUs" in the above.

[0027] The communication terminal 200 is connected to the first bus CB100 and the second bus CB200. The communication terminal 200 has a function of receiving alarm information from each ECU 100 via the first bus CB100 or the second bus CB200. The communication terminal 200 also has a function of tallying up the received alarm information and transmitting the tallying result (hereinafter, sometimes referred to as an "alarm list") to the center server 300. These functions are enabled when the communication terminal 200 is in an activated state, and disabled when the communication terminal 200 is in a sleep state. The center server 300 is a server operated by a public institution. The "public institution" here is, for example, an institution that requires new energy vehicles to periodically provide an alarm list. In this example, it is assumed that the alarm list is required to be provided periodically not only when the vehicle 10 is in a driving state, but also when the battery is being charged by an external power source.

[0028] In the in-vehicle system configured as described above, when the vehicle 10 is in a driving state, each of the multiple ECUs 100 transmits alarm information to the communication terminal 200 at a predetermined period. At this time, the alarm information is transmitted using the first bus CB100. Every time the communication terminal 200 receives alarm information from the multiple ECUs 100, it aggregates the alarm information to generate an alarm list, and transmits the generated alarm list to the center server 300.

[0029] Furthermore, when the battery is charged by an external power source, only the ECUs 103-105 associated with the battery among the multiple ECUs 100 transmit alarm information to the communication terminal 200 at a predetermined cycle. At this time, the alarm information is transmitted using the second bus CB200. Every time the communication terminal 200 receives alarm information from the ECUs 103-105 associated with the battery, the communication terminal 200 aggregates the alarm information to generate an alarm list, and transmits the generated alarm list to the center server 300.

[0030] Incidentally, the battery is charged by the external power source when the vehicle 10 is in a stopped state. When the vehicle 10 is in a stopped state, the communication terminal 200 is in a sleep state unless a special event (for example, the operation of a security system, etc.) occurs. Therefore, when charging of the battery by the external power source starts, the communication terminal 200 needs to be transitioned from the sleep state to an active state. In contrast, in this example, when charging of the battery by the external power source starts, the charging ECU 104 activates the communication terminal 200. This allows the communication terminal 200 to receive alarm information and transmit an alarm list to the center server 300 even when charging of the battery by the external power source is being performed.

[0031] (Hardware configuration of in-vehicle system) Fig. 3 is a diagram showing an example of the hardware configuration of each of the ECU 100 and the communication terminal 200 included in the in-vehicle system. Note that, in Fig. 3, only the charging ECU 104 is shown among the multiple ECUs 100, but the hardware configurations of the other ECUs are the same.

[0032] The charging ECU 104 is an electronic control unit for controlling in-vehicle devices. The charging ECU 104 transitions from an active state to a sleep state when an ignition switch or a power switch is switched from on to off. The charging ECU 104 also transitions from a sleep state to an active state when an ignition switch or a power switch is switched from off to on, and when various trigger signals are received or input. When the charging ECU 104 is in an active state, the charging ECU 104 performs various processes for controlling in-vehicle devices and transmits alarm information to the communication terminal 200 at a predetermined cycle. 3, the charging ECU 104 includes a processor 110, a main memory unit 120, an auxiliary memory unit 130, and an in-vehicle communication unit 140. The charging ECU 104 realizes a function that meets a predetermined purpose by the processor 110 loading a program stored in the auxiliary memory unit 130 into a working area of ​​the main memory unit 120 and executing the program.

[0033] The processor 110 is, for example, a central processing unit (CPU) or a digital signal processor (DSP). Performs calculations for information processing.

[0034] The main storage unit 120 includes, for example, a RAM (Random Access Memory) and a ROM (Read Only Memory, etc.) As described above, a working area for the processor to execute a program is set in the main storage unit 120.

[0035] The auxiliary storage unit 130 is, for example, an EPROM (Erasable Programmable ROM) or a HDD. The auxiliary storage unit 130 stores various programs and various data. The auxiliary storage unit 130 stores the data, the data, and various tables in a readable and writable manner in the recording medium. The programs stored in the auxiliary storage unit 130 include, in addition to an OS (Operating System) and the like, a program for implementing a function of transmitting alarm information to the communication terminal 200 at a predetermined cycle. Such a program is common to all of the multiple ECUs 100. The auxiliary storage unit 130 also stores a program specific to the charging ECU 104. The program specific to the charging ECU 104 is, for example, a program for implementing a function of starting up the communication terminal 200 when charging of the battery by an external power source is started. Note that a part or all of the information stored in the auxiliary storage unit 130 may be stored in the main storage unit 120. Note that a part of the information stored in the main storage unit 120 may be stored in the auxiliary storage unit 130.

[0036] The in-vehicle communication unit 140 is an interface for connecting the ECU 100 to the first bus CB100 or the second bus CB200. The in-vehicle communication unit 140 connects to the first bus CB100 or the second bus CB200 by using, for example, an interface circuit of the CAN standard. In this embodiment, the in-vehicle communication unit 140 communicates with other ECUs 100 and the communication terminal 200 through the first bus CB100 or the second bus CB200.

[0037] The series of processes executed by the ECU 100 configured as described above can be executed by hardware, but can also be executed by software.

[0038] Next, the communication terminal 200 is a terminal having a function of transmitting and receiving data to and from a plurality of ECUs 100 and a function of transmitting and receiving data to and from the center server 300. The communication terminal 200 transitions from an active state to a sleep state when an ignition switch or a power switch is switched from on to off. The communication terminal 200 transitions from a sleep state to an active state when an ignition switch or a power switch is switched from off to on and when various trigger signals are received or input. When the communication terminal 200 is in an active state, the communication terminal 200 performs various processes for transmitting an alarm list to the center server 300 at a predetermined period. As shown in FIG. 3, such a communication terminal 200 includes a processor 210, a main memory unit 220, an auxiliary memory unit 230, an in-vehicle communication unit 240, and an outside-vehicle communication unit 250. The communication terminal 200 realizes functions that meet a predetermined purpose by the processor 210 loading a program stored in the auxiliary storage unit 230 into a working area of ​​the main storage unit 220 and executing the program.

[0039] The processor 210, the main memory unit 220, and the in-vehicle communication unit 240 are similar to the processor 110, the main memory unit 120, and the in-vehicle communication unit 140 of the ECU 100, respectively, and therefore their description will be omitted. will be done.

[0040] The auxiliary storage unit 230 may include a removable medium in addition to the same configuration as the auxiliary storage unit 130 of the ECU 100. The removable medium is, for example, a Universal Serial Bus (USB) memory, or a disk recording medium such as a Compact Disc (CD) or a Digital Versatile Disc (DVD). The programs stored in the auxiliary storage unit 230 include a program for implementing a function for transmitting an alarm list to the center server 300 when the communication terminal 200 is in an activated state.

[0041] The vehicle exterior communication unit 250 is an interface for connecting the communication terminal 200 to a network. The vehicle exterior communication unit 250 is, for example, an interface for connecting the communication terminal 200 to a network. The vehicle exterior communication unit 250 connects to the network by a mobile communication method such as 5G (5th Generation) or a wireless communication method such as Wi-Fi. In this embodiment, the vehicle exterior communication unit 250 communicates with the center server 300 through the network.

[0042] The series of processes executed by the communication terminal 200 configured as described above can be executed by hardware, but can also be executed by software.

[0043] (ECU functional configuration) Here, an example of the functional configuration of the charging ECU 104 in this embodiment will be described with reference to FIG. 4. As shown in FIG. 4, the charging ECU 104 in this embodiment includes a charging processing unit F1041, a detection unit F1042, an activation processing unit F1043, and a data transmission unit F1044 as its functional components. The charging processing unit F1041, the detection unit F1042, the activation processing unit F1043, and the data transmission unit F1044 are realized by the processor 110 executing a program loaded on the main storage unit 120. These functional components work when the charging ECU 104 is in an activated state, and do not work when the charging ECU 104 is in a sleep state. Among the functional components of the charging ECU 104, the combination of the detection unit F1042 and the activation processing unit F1043 corresponds to the "control unit" of the ECU according to the present disclosure.

[0044] The charging processing unit F1041 performs various processes for charging the battery with an external power source. Here, when the vehicle 10 is in a stopped state, the multiple ECUs 100 including the charging ECU 104 are also in a sleep state, similar to the communication terminal 200. In such a state, when a charging cable from an external power source is connected to the charging port of the vehicle 10, a detection signal of a sensor for detecting the connection of the charging cable to the charging port, or a trigger signal such as a CPLT signal from the external power source is input to the charging ECU 104. Note that examples of the above-mentioned sensor include a limit switch, a proximity sensor, and a photoelectric sensor. In addition, when timer charging is performed with the charging connector connected to the charging port of the vehicle 10 in advance, a trigger signal is input from the timer to the charging ECU 104 at the timing when the charging start time arrives. When the above-mentioned various trigger signals are input to the charging ECU 104, the charging ECU 104 transitions from a sleep state to an activated state. The charging ECU 104 activated in this manner starts charging the battery from the external power source. For example, the charging processing unit F1041 starts charging the battery from the external power source by switching a relay provided between the charging port and the battery of the vehicle 10 from off (a state in which the charging port and the battery are disconnected) to on (a state in which the charging port and the battery are conductive). Furthermore, when starting charging the battery from the external power source, the charging processing unit F1041 transmits a trigger signal for transitioning the battery ECU 103 from a sleep state to an activated state via the second bus CB200. This allows the charging processing unit F1041 to obtain the SOC, temperature, etc. of the battery via the battery ECU 103 while the battery is being charged by the external power source. As a result, the charging processing unit F1041 can control the magnitude of the current flowing from the external power source to the battery based on the information obtained from the battery ECU 103. Furthermore, When the SOC reaches a predetermined value, the charging processing unit F1041 can also terminate charging of the battery by the external power supply by switching the above-mentioned relay from on to off.

[0045] The detection unit F1042 detects the start and end of charging the battery by the external power source. For example, the detection unit F1042 detects the start and end of charging the battery by the external power source by monitoring the state of the above-mentioned relay. That is, when the above-mentioned relay is switched from off to on, the detection unit F1042 determines that charging the battery by the external power source has started. Also, when the above-mentioned relay is switched from on to off, the detection unit F1042 determines that charging the battery by the external power source has ended. Note that the start and end of charging the battery by the external power source may be notified to the detection unit F1042 from the charging processing unit F1041. When the detection unit F1042 detects the start and end of charging the battery by the external power source, the detection result is passed to the startup processing unit F1043.

[0046] When the start of charging the battery by the external power source is detected, the startup processing unit F1043 transmits a trigger signal for transitioning the communications terminal 200 from a sleep state to an active state to the communications terminal 200 via the second bus CB200. Following the above-mentioned trigger signal, the startup processing unit F1043 transmits a signal (first signal) indicating that charging of the battery by the external power source has started to the communications terminal 200 via the second bus CB200. Furthermore, when the end of charging the battery by the external power source is detected, the startup processing unit F1043 transmits a signal (second signal) indicating that charging of the battery by the external power source has ended to the communications terminal 200 via the second bus CB200.

[0047] The data transmission unit F1044 generates alarm information and transmits the generated alarm information to the communication terminal 200. At that time, if the vehicle 10 is in a driving state, the data transmission unit F1044 transmits the alarm information to the communication terminal 200 through the first bus CB100. Also, if the battery is being charged by an external power source, the data transmission unit F1044 transmits the alarm information to the communication terminal 200 through the second bus CB200. The generation of the alarm information by the data transmission unit F1044 and the transmission to the communication terminal 200 are repeatedly executed at a predetermined period. Note that the alarm information generated by the data transmission unit F1044 is information indicating the presence or absence of an alarm related to an in-vehicle device under the control of the charging ECU 104. Therefore, at the timing of generating the alarm information, the data transmission unit F1044 determines whether an alarm has occurred in the in-vehicle device based on the detection values ​​of various sensors and the like attached to the in-vehicle device under the control of the charging ECU 104. Then, the data transmission unit F1044 generates alarm information according to the above-mentioned determination result.

[0048] Of the functions of the data transmission unit F1044 described above, the function of generating alarm information and transmitting it to the communication terminal 200 when the vehicle 10 is in a driving state is common to all of the multiple ECUs 100. Also, of the functions of the data transmission unit F1044 described above, the function of generating alarm information and transmitting it to the communication terminal 200 when the battery is being charged by an external power source is common only to the ECUs 103-105 related to the battery.

[0049] Any one or a part of the charging processing unit F1041, the detection unit F1042, the start-up processing unit F1043, and the data transmission unit F1044 may be realized by a hardware circuit. Furthermore, the functional configuration of the ECU 100 is not limited to the example shown in FIG. 4, and components may be omitted, replaced, or added as appropriate.

[0050] (Functional configuration of communication terminal) Next, a functional configuration example of the communication terminal 200 in this embodiment will be described with reference to Fig. 5. As shown in Fig. 5, the communication terminal 200 in this embodiment includes a receiving unit F210, a data processing unit F220, and a transmitting unit F230 as its functional components. The reception unit F210, data processing unit F220, and transmission unit F230 are realized by the processor 210 executing a program loaded on the main memory unit 220. The reception unit F210, data processing unit F220, and transmission unit F230 operate when the communication terminal 200 is in an activated state, and do not operate when the communication terminal 200 is in a sleep state.

[0051] The receiving unit F210 receives the alarm information transmitted from each ECU 100 through the in-vehicle communication unit 240. At that time, when the vehicle 10 is in a driving state, the receiving unit F210 receives the alarm information from all of the plurality of ECUs 100. Also, when the battery is being charged by an external power source, the receiving unit F210 receives the alarm information only from the ECUs 103-105 related to the battery among the plurality of ECUs 100. Note that the reception of the alarm information is repeated at a predetermined cycle while the vehicle 10 is in a driving state and while the battery is being charged by an external power source. The plurality of pieces of alarm information received by the receiving unit F210 are passed from the receiving unit F210 to the data processing unit F220.

[0052] The data processing unit F220 generates an alarm list based on the multiple alarm information received by the receiving unit F210. As described above, the alarm list is a list that is required to be transmitted to the center server 300 at a predetermined cycle, and includes multiple items for registering the presence or absence of alarms of types defined by laws and regulations. Therefore, the data processing unit F220 extracts information to be registered in each item of the alarm list from the multiple alarm information received by the receiving unit F210, and generates the alarm list based on the extracted information. The alarm list generated by the data processing unit F220 is passed from the data processing unit F220 to the transmitting unit F230.

[0053] The transmission unit F230 transmits the alarm list generated by the data processing unit F220 to the center server 300 via the exterior communication unit 250.

[0054] Any one or a part of the receiving unit F210, the data processing unit F220, and the transmitting unit F230 may be realized by a hardware circuit when the communication terminal 200 is started by the charging ECU 104. Furthermore, the functional configuration of the communication terminal 200 is not limited to the example shown in Fig. 5, and components may be omitted, replaced, or added as appropriate.

[0055] (Processing flow) Next, an example of a processing sequence in the in-vehicle system of this embodiment will be described with reference to Fig. 6. Fig. 6 is a sequence diagram showing an example of processing performed in the in-vehicle system when the battery is charged by an external power source. In the example shown in Fig. 6, it is assumed that the vehicle 10 is in a stopped state, and the ECUs 103-105 and the communication terminal 200 related to the battery are in a sleep state.

[0056] When charging of the battery by an external power source is started, as described above, a trigger signal from a sensor for detecting connection of a charging connector to a charging port, an external power source, or a timer is input to charging ECU 104. Upon receiving the input of the trigger signal, charging ECU 104 transitions from a sleep state to an activated state (S11). This allows charging ECU 104 to control charging of the battery by an external power source and to transmit alarm information to communication terminal 200.

[0057] In the charging ECU 104 that has transitioned from the sleep state to the active state, the charging processing unit F1041 transmits a trigger signal for transitioning the battery ECU 103 from the sleep state to the active state to the battery ECU 103 via the second bus CB200 (S12).

[0058] The battery ECU 103 that receives the trigger signal from the charging ECU 104 goes into sleep mode. The battery ECU 103 transitions from the standby state to the activated state (S13). This enables the battery ECU 103 to transmit information about the battery state (SOC, temperature, etc.) to the hybrid ECU 105 and also enables the battery ECU 103 to transmit alarm information to the communication terminal 200.

[0059] The charging processing unit F1041 of the charging ECU 104 starts charging the battery from an external power source after starting the battery ECU 103 (S14). Specifically, as described above, the charging processing unit F1041 switches the relay provided between the charging port of the vehicle 10 and the battery from OFF to ON.

[0060] When the relay is switched from off to on, the detection unit F1042 of the charging ECU 104 determines that charging of the battery by the external power source has started. Such a determination result is passed from the detection unit F1042 to the startup processing unit F1043. The startup processing unit F1043 transmits a trigger signal for transitioning the communication terminal 200 from a sleep state to an active state to the communication terminal 200 via the second bus CB200 (S15).

[0061] The communication terminal 200, which has received the trigger signal from the charging ECU 104, transitions from a sleep state to an active state (S16). As a result, the communication terminal 200 becomes capable of communicating with the ECUs 103-105 related to the battery and with the center server 300.

[0062] After starting up the communication terminal 200, the start-up processing unit F1043 of the charging ECU 104 transmits a first signal to the communication terminal 200 through the second bus CB200 (S17). The first signal is a signal indicating that charging of the battery by an external power source has started. This enables the communication terminal 200 to receive alarm information from the ECUs 103-105 related to the battery and to generate an alarm list.

[0063] Here, as described above, the hybrid ECU 105 is directly connected to the battery via the wiring WR100. Therefore, when the battery voltage changes as the external power source starts charging the battery, the voltage input to the hybrid ECU 105 via the wiring WR100 also changes. As a result, the hybrid ECU 105 transitions from a sleep state to an activated state in response to the change in input voltage (S18). As a result, the hybrid ECU 105, like the charging ECU 104 and the battery ECU 103, becomes capable of transmitting alarm information to the communication terminal 200.

[0064] When the battery ECU 103, the charging ECU 104, and the hybrid ECU 105 are each activated, each of these ECUs 103-105 transmits alarm information to the communication terminal 200 through the second bus CB200 (S19).

[0065] When the alarm information transmitted from each of the battery ECU 103, the charging ECU 104, and the hybrid ECU 105 is received by the in-vehicle communication unit 240 of the communication terminal 200, the alarm information is passed to the data processing unit F220 via the receiving unit F210. The data processing unit F220 generates an alarm list based on the above alarm information (S20).

[0066] When the alarm list is generated by the data processing unit F220, the transmission unit F230 of the communication terminal 200 transmits the alarm list to the center server 300 through the exterior communication unit 250 (S21).

[0067] The above-mentioned processes relating to S19 to S21 are repeatedly executed at a predetermined cycle until charging of the battery by the external power source is completed.

[0068] When the SOC acquired through the battery ECU 103 reaches a predetermined value, the charging processing unit F1041 of the charging ECU 104 ends charging of the battery from the external power source (S22). Specifically, the charging processing unit F1041 switches the above-mentioned relay from on to off.

[0069] When the relay is switched from on to off, the detection unit F1042 of the charging ECU 104 determines that charging of the battery by the external power source has ended. Such a determination result is passed from the detection unit F1042 to the startup processing unit F1043. The startup processing unit F1043 transmits a second signal to the communication terminal 200 through the second bus CB200 (S23). The second signal is a signal indicating that charging of the battery by the external power source has ended. As a result, the communication terminal 200 ends reception of alarm information from the ECUs 103-105 related to the battery and ends generation of the alarm list. At that time, the communication terminal 200 may transition from an active state to a sleep state.

[0070] When charging of the battery by the external power supply is completed, a signal similar to the second signal may be transmitted from the charging ECU 104 to the battery ECU 103 and the hybrid ECU 105. In this case, the battery ECU 103 and the hybrid ECU 105 are triggered by receiving the above signal to end the generation of alarm information and the transmission of alarm information to the communication terminal 200. Also, the battery ECU 103 and the hybrid ECU 105 are triggered by receiving the above signal to transition from an activated state to a sleep state.

[0071] Next, the flow of processing performed by charging ECU 104 when charging the battery from an external power source will be described with reference to Fig. 7. Fig. 7 is a flowchart showing a processing routine performed by charging ECU 104 when charging of the battery from an external power source is started. That is, Fig. 7 is a flowchart showing the processing routine performed by charging ECU 104 from S14 onward in Fig. 6 described above.

[0072] In FIG. 7, when the charging processing unit F1041 of the charging ECU 104 switches the above-mentioned relay from off to on to start charging the battery from the external power source, the detection unit F1042 detects that charging of the battery from the external power source has started (step S101).

[0073] When the start of charging the battery by the external power source is detected in step S101, the activation processing unit F1043 transmits a trigger signal for transitioning the communication terminal 200 from a sleep state to an active state to the communication terminal 200 through the in-vehicle communication unit 140 (step S102). At that time, the in-vehicle communication unit 140 transmits the trigger signal to the communication terminal 200 by using the second bus CB200. As a result, the communication terminal 200 transitions from the sleep state to the active state.

[0074] When the communication terminal 200 is started in step S102, the start-up processing unit F1043 transmits a first signal to the communication terminal 200 through the in-vehicle communication unit 140 and the second bus CB200 (step S103). As described above, the first signal is a signal indicating that charging of the battery by an external power source has started. This makes the communication terminal 200 ready to receive alarm information from the ECUs 103-105 related to the battery and ready to generate an alarm list.

[0075] When the first signal is transmitted to the communication terminal 200 in step S103, the data transmission unit F1044 generates alarm information at a predetermined cycle and transmits the generated alarm information to the communication terminal 200. to the communication terminal 200 (step S104). At that time, the data transmission unit F1044 transmits the alarm information to the communication terminal 200 through the in-vehicle communication unit 140 and the second bus CB200. Note that similar processing is also performed in the battery ECU 103 and the hybrid ECU 105, so that the communication terminal 200 can generate an alarm list and transmit it to the center server 300 based on the alarm information received from the ECUs 103-105 related to the battery.

[0076] When the process of step S104 ends, the detection unit F1042 determines whether charging of the battery by the external power source has ended (step S105). At that time, if the charging processing unit F1041 has not switched the relay from on to off (the relay remains on), the detection unit F1042 determines that charging of the battery by the external power source has not ended (negative determination in step S105). In that case, the process of step S104 is executed again. On the other hand, if the charging processing unit F1041 has switched the relay from on to off, the detection unit F1042 determines that charging of the battery by the external power source has ended (positive determination in step S105). In that case, the process of step S106 is executed.

[0077] In step S106, the start-up processing unit F1043 transmits a second signal to the communication terminal 200 through the in-vehicle communication unit 140 and the second bus CB200. As described above, the second signal is a signal indicating that charging of the battery by the external power source has ended. This causes the communication terminal 200 to end the reception of alarm information from the ECUs 103-105 related to the battery and to end the generation of the alarm list. When the processing of step S106 ends, the execution of this processing routine ends.

[0078] 6 and 7, when the battery is charged by an external power source, the communication terminal 200 can be shifted from a sleep state to an active state. This enables the communication terminal 200 to receive alarm information from the ECUs 103-105 related to the battery, and generate an alarm list based on the alarm information. As a result, even when the battery is charged by an external power source, the alarm list can be transmitted to the center server 300.

[0079] <Variation 1> In the above-described embodiment, an example has been described in which the charging ECU 104 starts up the communication terminal 200 when the battery is charged by an external power supply. However, the battery ECU 103 may start up the communication terminal 200.

[0080] When charging of the battery by the external power supply starts, the SOC and voltage of the battery change. When charging of the battery by the external power supply ends, the changes in the SOC and voltage of the battery stop. Here, as described in the above embodiment, before charging of the battery by the external power supply starts, the battery ECU 103 is activated by the charging ECU 104. Therefore, the battery ECU 103 can detect the start and end of charging of the battery by the external power supply based on the SOC or voltage of the battery.

[0081] Therefore, in this modification, when the battery is charged by an external power source, the battery ECU 103 detects the start and end of charging the battery by the external power source, and starts up the communication terminal 200 and transmits a first signal and a second signal to the communication terminal 200. In this modification, the battery ECU 103 corresponds to the "predetermined ECU (second ECU)" according to the present disclosure.

[0082] Here, an example of a processing sequence in the in-vehicle system of this modified example will be described with reference to FIG. 8. FIG. 8 shows the processing sequence in the in-vehicle system when the battery is charged by an external power source. 8 is a sequence diagram showing an example of processing performed in the system. Note that in Fig. 8, the same processes as those in the above-mentioned Fig. 6 are denoted by the same reference numerals as in Fig. 6. Therefore, the description of the same processes as those in the above-mentioned Fig. 6 will be omitted.

[0083] 8, after the battery ECU 103 is started by a trigger signal from the charging ECU 104, when the charging ECU 104 starts charging the battery from an external power source (S14), the SOC and voltage of the battery change. At that time, the charging ECU 104 can detect that charging of the battery from an external power source has started by detecting the change in the SOC or voltage of the battery (S31).

[0084] The battery ECU 103, which detects the start of charging the battery by the external power source, transmits a trigger signal to the communication terminal 200 through the second bus CB200 to cause the communication terminal 200 to transition from a sleep state to an active state (S32). This activates the communication terminal 200 (S16), and enables communication between the communication terminal 200 and the ECUs 103-105 related to the battery.

[0085] After starting up the communication terminal 200, the battery ECU 103 transmits a first signal to the communication terminal 200 through the second bus CB200 (S33). This enables the communication terminal 200 to receive alarm information from the battery-related ECUs 103-105 and generate an alarm list.

[0086] During the period from when the first signal is transmitted from the battery ECU 103 to the communication terminal 200 until charging of the battery by the external power source is terminated, the transmission of alarm information from the battery-related ECUs 103-105 to the communication terminal 200, generation of an alarm list by the communication terminal 200, and transmission of the alarm list from the communication terminal 200 to the center server 300 are repeated at a predetermined cycle, as in the above-described Fig. 6. Then, when the charging ECU 104 terminates charging of the battery by the external power source (S22), the changes in the SOC and voltage of the battery stop. At that time, the battery ECU 103 detects that charging of the battery by the external power source has been terminated by detecting that the changes in the SOC or voltage of the battery have stopped (S34).

[0087] The battery ECU 103, which detects the completion of charging the battery by the external power supply, transmits a second signal to the communication terminal through the second bus CB200 (S35).

[0088] According to the above-described modified example, when the battery is charged by an external power supply, the communication terminal 200 can be started up by using the battery ECU 103 started up by the charging ECU 104. As a result, the same effects as those of the above-described embodiment can be obtained.

[0089] <Variation 2> In the above-mentioned variant example 1, an example was described in which the communication terminal 200 is started up using the battery ECU 103 instead of the charging ECU 104 when the battery is charged by an external power source, but the communication terminal 200 may also be started up using the hybrid ECU 105 instead of the charging ECU 104.

[0090] As described in the above embodiment, when charging of the battery by an external power source starts, the voltage input to the hybrid ECU 105 via the wiring WR100 changes, which triggers the start of the hybrid ECU 105. This allows the hybrid ECU 105 to determine that charging of the battery by an external power source has started on the condition that the voltage input via the wiring WR100 has changed. In other words, like the battery ECU 103 described above, the hybrid ECU 105 determines that charging of the battery by an external power source has started. The hybrid ECU 105 can detect the start of charging of the battery from the external power source. Furthermore, when charging of the battery from the external power source is terminated, the change in the battery voltage stops, and therefore the change in the voltage input to the hybrid ECU 105 via the wiring WR100 also stops. This allows the hybrid ECU 105 to determine that charging of the battery from the external power source has ended on the condition that the change in the voltage input via the wiring WR100 has stopped. That is, the hybrid ECU 105 can also detect the end of charging of the battery from the external power source, similar to the battery ECU 103 described above.

[0091] Therefore, in this modification, when the battery is charged by an external power supply, the hybrid ECU 105 detects the start and end of charging the battery by the external power supply, and starts up the communication terminal 200 and transmits a first signal and a second signal to the communication terminal 200. In this modification, the hybrid ECU 105 corresponds to the "predetermined ECU (third ECU)" according to the present disclosure.

[0092] Here, an example of a processing sequence in the in-vehicle system of this modified example will be described with reference to Fig. 9. Fig. 9 is a sequence diagram showing an example of processing performed in the in-vehicle system when charging the battery with an external power source. In Fig. 9, the same processes as those in Fig. 6 described above are denoted by the same reference numerals as those in Fig. 6. Therefore, a description of the same processes as those in Fig. 6 described above will be omitted.

[0093] 9, when the charging ECU 104 starts charging the battery from the external power source and the hybrid ECU 105 is started (S18), the hybrid ECU 105 determines that charging of the battery from the external power source has started based on a change in the voltage input via the wiring WR100. This allows the hybrid ECU 105 to detect the start of charging of the battery from the external power source (S41).

[0094] Hybrid ECU 105, which detects the start of charging the battery by the external power source, transmits a trigger signal to communication terminal 200 through second bus CB200 to transition communication terminal 200 from a sleep state to an active state (S42). This activates communication terminal 200 (S16), enabling communication between communication terminal 200 and ECUs 103-105 related to the battery.

[0095] After starting up the communication terminal 200, the hybrid ECU 105 transmits a first signal to the communication terminal 200 through the second bus CB200 (S43). This enables the communication terminal 200 to receive alarm information from the battery-related ECUs 103-105 and generate an alarm list.

[0096] During the period from when the first signal is transmitted from the hybrid ECU 105 to the communication terminal 200 until charging of the battery by the external power source is terminated, the transmission of alarm information from the battery-related ECUs 103-105 to the communication terminal 200, generation of an alarm list by the communication terminal 200, and transmission of the alarm list from the communication terminal 200 to the center server 300 are repeated at a predetermined cycle, as in the above-described FIG. 6. Then, when the charging ECU 104 terminates charging of the battery by the external power source (S22), the change in the battery voltage stops, and accordingly, the change in the voltage input to the hybrid ECU 105 via the wiring WR100 also stops. This allows the hybrid ECU 105 to determine that charging of the battery by the external power source has been terminated, on the condition that the change in the voltage input via the wiring WR100 has stopped. That is, the hybrid ECU 105 can detect the termination of charging of the battery by the external power source (S44).

[0097] The hybrid ECU 105 detects the end of charging the battery by the external power source. A second signal is transmitted to the communication terminal via the bus CB200 (S45).

[0098] According to the above-described modified example, when the battery is charged by an external power source, the hybrid ECU 105, which is autonomously started by being triggered by the start of charging the battery by the external power source, can be used to start the communication terminal 200. As a result, the same effects as those of the above-described embodiment can be obtained.

[0099] <Other> The above-mentioned embodiment and modified examples are merely examples, and the present disclosure may be modified as appropriate within the scope of the gist thereof. The processes and configurations described in the present disclosure may be freely combined and implemented as long as no technical contradiction occurs. Furthermore, a process described as being performed by one device may be shared and executed by multiple devices. Furthermore, a process described as being performed by different devices may be executed by one device. In a computer system, the hardware configuration for implementing each function can be flexibly changed.

[0100] The present disclosure can also be realized by supplying a computer program that implements the functions described in the above embodiment or modification to a computer, and having one or more processors of the computer read and execute the program. Such a computer program may be provided to the computer by a non-transitory computer-readable storage medium that can be connected to the system bus of the computer, or may be provided to the computer via a network. A non-transitory computer-readable storage medium is a recording medium that stores information such as data and programs by electrical, magnetic, optical, mechanical, or chemical action and can be read from a computer or the like. Such a non-transitory computer-readable storage medium is, for example, any type of disk, such as a magnetic disk (such as a floppy (registered trademark) disk or HDD) or an optical disk (such as a CD-ROM, DVD disk, or Blu-ray disk). In addition, the non-transitory computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), an EPROM, an EEPROM, a magnetic card, a flash memory, an optical card, or an SSD (Solid State Drive), etc. The medium may be any of the above. [Explanation of symbols]

[0101] 10 Vehicles 100 ECU 103 Battery ECU 104 Charging ECU 105 Hybrid ECU 110 Processor 120 Main memory 130 Auxiliary storage 140 In-vehicle communication unit F1041 Charging processing unit F1042 Detection unit F1043 Startup processing part F1044 Data transmission unit 200 Communication terminal 210 Processor 220 Main memory 230 Auxiliary storage 240 In-vehicle communication unit 250 External communication unit F210 Receiver F220 Data Processing Unit F220 Data Processing Unit F230 Transmitter 300 Center Server

Claims

1. A plurality of ECUs (Electronic Control Units) are mounted on a vehicle having a battery that can be charged by an external power source, and are used to control on-board devices including the battery, a first ECU that is an ECU for controlling charging of the battery and that is activated when charging of the battery by an external power source is started, and a second ECU that is an ECU for managing a state of the battery; a communication terminal mounted on the vehicle, which, when the communication terminal is in an activated state, acquires alarm information, which is information regarding the presence or absence of an alarm in the vehicle-mounted device, from the plurality of ECUs and transmits the acquired alarm information to a predetermined server, and, when the communication terminal is in a sleep state, stops acquiring the alarm information and transmitting it to the predetermined server; An information processing system comprising: When the communication terminal is in a sleep state, the first ECU transmits a trigger signal to the second ECU to start up the second ECU in the sleep state; The second ECU receives the transmitted trigger signal and transitions from a sleep state to an active state, At least one of the plurality of ECUs Detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to an active state using a detection of a start of charging of the battery by an external power source as a trigger; Execute Information processing system.

2. the plurality of ECUs further includes a third ECU that is directly connected to the battery via a wiring for detecting a voltage of the battery and is activated when a voltage input via the wiring changes. The information processing system according to claim 1 .

3. the vehicle is a vehicle driven by a hybrid system including a motor and an internal combustion engine, The third ECU is an ECU for controlling the hybrid system. The information processing system according to claim 2 .

4. at least one of the plurality of ECUs transmits a first signal indicating that charging of the battery by an external power source has started to the communication terminal when the communication terminal is caused to transition from a sleep state to an active state; The communication terminal starts acquiring the alarm information and transmitting the alarm information to the predetermined server, when the communication terminal receives the first signal. The information processing system according to any one of claims 1 to 3.

5. at least one of the plurality of ECUs transmits a second signal indicating that charging of the battery by the external power source has been completed to the communication terminal when charging of the battery by the external power source has been completed; The communication terminal terminates acquisition of the alarm information and transmission of the alarm information to the predetermined server, when the communication terminal receives the second signal.

5. The information processing system according to claim 4.

6. An ECU system including a plurality of ECUs (Electronic Control Units) mounted on a vehicle having a battery that can be charged by an external power source, the plurality of ECUs include at least a first ECU that is an ECU for controlling charging of the battery and is activated when charging of the battery by an external power source is started, and a second ECU that is an ECU for managing a state of the battery; The first ECU includes a first control unit, and the second ECU includes a second control unit, A communication terminal mounted on the vehicle, when the communication terminal is in an activated state, acquires alarm information from the plurality of ECUs, which is information regarding the presence or absence of an alarm in an in-vehicle device including the battery, and transmits the acquired alarm information to a predetermined server, and when the communication terminal is in a sleep state, stops acquiring the alarm information and transmitting it to the predetermined server. When the communication terminal is in a sleep state, The first control unit is Transmitting a trigger signal to the second ECU to start up the second ECU in a sleep state; At least one of the first control unit and the second control unit is Detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to a transition state using a detection of a start of charging of the battery by an external power source as a trigger; Execute ECU system.

7. the plurality of ECUs further includes a third ECU that is directly connected to the battery via a wiring for detecting a voltage of the battery and is activated when a voltage detected via the wiring changes. The ECU system according to claim 6.

8. the vehicle is a vehicle driven by a hybrid system including a motor and an internal combustion engine, The third ECU is an ECU for controlling the hybrid system. The ECU system according to claim 7.

9. At least one of the plurality of ECUs transmits a first signal indicating that charging of the battery by an external power source has started to the communication terminal when the communication terminal transitions from a sleep state to an active state.

9. The ECU system according to claim 6.

10. At least one of the plurality of ECUs transmits, when charging of the battery by the external power source is completed, a second signal indicating that charging of the battery by the external power source is completed to the communication terminal. The ECU system according to claim 9.

11. A plurality of ECUs (Electronic Control Units) mounted on a vehicle having a battery that can be charged by an external power source, the plurality of ECUs include at least a first ECU that is an ECU for controlling charging of the battery and is activated when charging of the battery by an external power source is started, and a second ECU that is an ECU for managing a state of the battery; A communication terminal mounted on the vehicle, when the communication terminal is in an activated state, acquires alarm information from the plurality of ECUs, which is information regarding the presence or absence of an alarm in an in-vehicle device including the battery, and transmits the acquired alarm information to a predetermined server, and when the communication terminal is in a sleep state, stops acquiring the alarm information and transmitting it to the predetermined server. When the communication terminal is in a sleep state, The first ECU is Executing a step of transmitting a trigger signal to the second ECU for activating the second ECU in a sleep state; At least one of the first ECU and the second ECU, detecting the start of charging of the battery by an external power source; transitioning the communication terminal from a sleep state to an active state when a start of charging of the battery by an external power source is detected as a trigger; Execute Information processing methods.

12. At least one of the plurality of ECUs, and when the communication terminal is switched from a sleep state to an active state, the method further executes a step of transmitting a first signal to the communication terminal, the first signal indicating that charging of the battery by an external power source has started. The information processing method according to claim 11.

13. At least one of the plurality of ECUs, and when charging of the battery by the external power source is terminated, transmitting a second signal indicating that charging of the battery by the external power source has been terminated to the communication terminal. The information processing method according to claim 12.

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