JP7014132B2 - Abnormality analyzer - Google Patents

Description

The present invention relates to an abnormality analyzer.

Conventionally, as this kind of technology, a vehicle condition diagnosis means for diagnosing a vehicle condition and detecting a failure, a failure information recording means for recording information about a failure detected by the vehicle condition diagnosis means, and a diagnosis environment are determined. A failure diagnosis device including a diagnostic environment determining means and a recording destination selection means for selecting a failure information recording means for recording information on a failure based on a determination result by the diagnostic environment determining means has been proposed (for example, Patent Document). See 1). With this configuration, this device makes it possible to easily determine the environment in which the diagnosis was made.

Japanese Unexamined Patent Publication No. 2007-205942

In the above-mentioned failure diagnosis device technology, in a charging system that executes an external charging process for charging a power storage device using power from a charging stand, when an abnormality occurs during the external charging process, the cause of the abnormality is It is not possible to determine whether is the vehicle side or the charging stand side.

The main object of the abnormality analysis device of the present invention is to make it possible to determine whether the cause of the abnormality in the external charging process is the vehicle side or the charging stand side.

The anomaly analysis apparatus of the present invention has adopted the following means in order to achieve the above-mentioned main object.

The abnormality analyzer of the present invention is
An abnormality analysis device that includes a vehicle having a storage unit for storing information and a power storage device, and analyzes an abnormality in a charging system that executes an external charging process for charging the power storage device using electric power from a charging stand.
An acquisition unit that acquires abnormality history information including identification information of the charging stand, which is stored in the storage unit when an abnormality occurs during the external charging process.
When the acquired abnormality history information includes a plurality of charging stands, it is determined that an abnormality has occurred in the vehicle, and when the acquired abnormality history information includes one charging stand, it is included in the abnormality history information. It is urged to execute the diagnostic external charging process which is the external charging process using no charging stand, and when no abnormality occurs during the diagnostic external charging process, the charging stand included in the abnormality history information is included. When an abnormality occurs during the diagnostic external charging process, a determination unit that determines that an abnormality has occurred in the vehicle and a determination unit that determines that an abnormality has occurred in the vehicle.
The gist is to prepare.

The abnormality analysis device of the present invention acquires abnormality history information including identification information of a charging stand stored in a storage unit of a vehicle when an abnormality occurs during an external charging process. Then, when the acquired abnormality history information includes a plurality of charging stands, it is determined that an abnormality has occurred in the vehicle. On the other hand, when one charging stand is included in the abnormality history information, the external charging process for diagnosis, which is an external charging process using the charging stand not included in the abnormality history information, is urged to be executed, and the external charging process for diagnosis is performed. When no abnormality occurs, it is determined that an abnormality has occurred in the charging stand included in the abnormality history information, and when an abnormality occurs during the diagnostic external charging process, it is determined that an abnormality has occurred in the vehicle. .. By such a process, it is possible to determine whether the cause of the abnormality in the external charging process is the vehicle side or the charging stand side. Here, as an abnormality that occurs during the external charging process, there may be an abnormality in which the insulation resistance of any one of the power line on the charging stand side and the power line on the vehicle side is lowered.

The abnormality analysis device of the modified example of the present invention is
An abnormality analysis device of a charging system including a vehicle having a storage unit for storing information and a power storage device, and executing an external charging process for charging the power storage device using electric power from a charging stand.
An acquisition unit that acquires abnormality history information including identification information of the charging stand, which is stored in the storage unit when an abnormality occurs during the external charging process, from each vehicle.
When the same charging stand is included in at least two of the acquired abnormality history information, it is determined that an abnormality has occurred in the same charging stand, and the acquired plurality of abnormality history information When a plurality of charging stations are included in any of the abnormality history information, a determination unit for determining that an abnormality has occurred in the vehicle corresponding to the abnormality history information including the plurality of charging stations.
The gist is to prepare.

The abnormality analysis device of the modification of the present invention acquires abnormality history information including identification information of the charging stand stored in the storage unit of the vehicle when an abnormality occurs during the external charging process. Then, when the same charging stand is included in at least two of the acquired abnormality history information, it is determined that an abnormality has occurred in the same charging stand. On the other hand, when a plurality of charging stations are included in any of the acquired abnormality history information, it is determined that an abnormality has occurred in the vehicle corresponding to the abnormality history information including the plurality of charging stations. .. By such a process, it is possible to determine whether the cause of the abnormality in the external charging process is the vehicle side or the charging stand side. Here, as an abnormality that occurs during the external charging process, there may be an abnormality in which the insulation resistance of any one of the power line on the charging stand side and the power line on the vehicle side is lowered.

It is a block diagram which shows the outline of the structure of the vehicle 20 and the charging stand 50 as one Example of this invention. It is a flowchart which shows an example of the diagnostic routine executed by the vehicle ECU 40. It is explanatory drawing which shows an example of abnormality history information. It is a block diagram which shows the outline of the structure of the vehicle 20 and the dealer equipment 59. It is a flowchart which shows an example of the anomaly analysis routine executed by anomaly analysis apparatus 70. It is explanatory drawing which shows the outline of the structure of the vehicle 20A to 20C, and the server 90. It is a flowchart which shows an example of the abnormality analysis routine executed by a server 90.

Next, an embodiment for carrying out the present invention will be described with reference to examples.

FIG. 1 is a configuration diagram showing an outline of the configuration of a charging system 10 as an embodiment of the present invention. The charging system 10 of the embodiment includes a vehicle 20 and a charging stand 50. The vehicle 20 is configured as an electric vehicle or a hybrid vehicle, and as shown in the figure, a motor 22, an inverter 24, a battery 26 as a power storage device, a system main relay 28, a vehicle side connection portion 34, and charging. It includes a relay 36, an insulation resistance reduction detection device 38, and a vehicle electronic control unit (hereinafter, referred to as “vehicle ECU”) 40.

The motor 22 is configured as, for example, a synchronous motor generator, and outputs power for traveling. The inverter 24 is used to drive the motor 22 and is connected to the power line 30. The motor 22 is rotationally driven by switching control of a plurality of switching elements (not shown) of the inverter 24 by the vehicle ECU 40. The battery 26 is configured as, for example, a lithium ion secondary battery or a nickel hydrogen secondary battery, and is connected to the power line 30. The system main relay 28 is provided in the power line 30, and is controlled on and off by the vehicle ECU 40 to connect and disconnect the battery 26 side and the inverter 24 side.

The vehicle-side connection portion 34 is connected to the inverter 24 side of the system main relay 28 in the power line 30 via the power line 32. The vehicle-side connection portion 34 is configured to be connectable to the charging-side connection portion 54 of the charging stand 50 capable of supplying DC power to the vehicle 20 at a charging point such as a home or a charging station. The charging relay 36 is provided in the power line 32. The charging relay 36 is controlled on and off by the vehicle ECU 40 to connect and disconnect the power line 30 and the vehicle-side connection unit 34.

Although not shown, the insulation resistance drop detection device 38 has an oscillation power supply in which one terminal is grounded, a detection resistance in which one terminal is connected to the other terminal of the oscillation power supply, and one terminal in the other terminal of the detection resistance. It has a coupling capacitor in which the other terminal is connected to the negative side line of the power line 32, and a voltage sensor that detects the voltage at the connection point between the detection resistance and the coupling capacitor and outputs the voltage to the vehicle ECU 40. The voltage sensor outputs a voltage waveform with substantially the same amplitude as the oscillating power supply when there is no abnormality in the insulation resistance of the target electric system, and when an abnormality in the insulation resistance of the target electric system occurs, the oscillating power supply. Outputs a voltage waveform with a smaller amplitude. Here, the target electric system corresponds to a portion electrically connected to the negative electrode side line of the power line 32. For example, when the system main relay 28 and the charging relay 36 are off and the vehicle side connection portion 34 and the charging side connection portion 54 are not connected in the system off state, the inverter 24 and the system in the negative side line of the power line 30. The area between the main relay 28 and the power line 30 side of the charging relay 36 in the negative side line of the power line 32 corresponds to the target electric system, and the vehicle side connection portion 34 and the charging side connection portion 54 are connected to each other. When the system main relay 28 and the charging relay 36 are on, the negative side lines of the power lines 30 and 32 and the negative side power line of the power line 53 correspond to the target electric system.

The vehicle ECU 40 is configured as a microcomputer including a CPU 41, a ROM 42, an SRAM 43, an input / output port, and a communication port. Signals from various sensors are input to the vehicle ECU 40 via the input port. The signals input to the vehicle ECU 40 include, for example, the rotation position θm of the rotor of the motor 22 from the rotation position sensor that detects the rotation position of the rotor of the motor 22, and the voltage sensor attached between the terminals of the battery 26. Examples include the voltage Vb of the battery 26 from 26a and the current Ib of the battery 26 from the current sensor 26b attached to the output terminal of the battery 26. Further, a connection detection signal from a connection detection sensor that is attached to the vehicle side connection unit 34 and detects the connection between the vehicle side connection unit 34 and the charging side connection unit 54, and a signal (voltage waveform) from the insulation resistance decrease detection device 38. ) Can also be mentioned. Further, the ignition signal from the ignition switch, the shift position from the shift position sensor, the accelerator opening from the accelerator pedal position sensor, the brake pedal position from the brake pedal position sensor, and the vehicle speed from the vehicle speed sensor can also be mentioned.

Various control signals are output from the vehicle ECU 40 via the output port. Examples of the signal output from the vehicle ECU 40 include a control signal to the inverter 24, a control signal to the system main relay 28, and a control signal to the charging relay 36. The vehicle ECU 40 calculates the storage ratio SOC of the battery 26 based on the integrated value of the current Ib of the battery 26 from the current sensor 26b. Further, the vehicle ECU 40 can communicate with the charging ECU 56 of the charging stand 50.

The charging stand 50 is installed at a charging point such as a home or a charging station, and includes a charging device 52, a charging side connection unit 54, and an electronic charging control unit (hereinafter referred to as “charging ECU”) 56. The charging device 52 converts AC power from an AC power source such as a household power source or an industrial power source into DC power and supplies the AC power to the charging side connection portion 54 (vehicle 20) via the power line 53. The charging side connection portion 54 is configured to be connectable to the vehicle side connection portion 34 of the vehicle 20.

Although not shown, the charging ECU 56 is configured as a microcomputer including a CPU, a ROM, an SRAM, an input / output port, and a communication port. Signals from various sensors are input to the charging ECU 56 via the input port. Examples of the signal input to the charging ECU 56 include a connection detection signal from a connection detection sensor that is attached to the charging side connection unit 54 and detects the connection between the charging side connection unit 54 and the vehicle side connection unit 34. can. A control signal or the like to the charging device 52 is output from the charging ECU 56 via the output port. The charging ECU 56 can communicate with the vehicle ECU 40 of the vehicle 20.

In the charging system 10 of the embodiment configured in this way, the vehicle 20 is parked at a charging point such as a home or a charging station, and the vehicle side connection unit 34 and the charging side connection unit 54 are operated by an operator (for example, a driver) in a system off state. When the operation unit of the charging stand 50 is operated and an instruction is given to execute an external charging process for charging the battery 26 using the power from the charging device 52 of the charging stand 50, the external charging process is executed. Start. In the external charging process, first, the charging ECU 56 transmits a signal indicating that the execution of the external charging process is instructed to the vehicle ECU 40. Upon receiving this signal, the vehicle ECU 40 turns on the system main relay 28 and the charging relay 36, and transmits a charging start request to the charging ECU 56. Upon receiving the charging start request, the charging ECU 56 starts executing the charging control that controls the charging device 52 so as to supply electric power to the vehicle 20. As a result, the electric power from the charging device 52 is supplied to the battery 26 via the electric power line 53, the charging side connecting portion 54, the vehicle side connecting portion 34, and the electric power lines 32 and 30, and the battery 26 is charged. Then, when the storage ratio SOC of the battery 26 reaches the threshold value Sref (for example, about 85% to 95%) or more, a charge end request is transmitted to the charging ECU 56. Upon receiving the charge end request, the charge ECU 56 ends the execution of the charge control. As a result, charging of the battery 26 is completed. Then, the vehicle ECU 40 turns off the charging relay 36 and the system main relay 28. In this way, the execution of the external charge process is completed.

Next, the operation of the vehicle 20 in the charging system 10 of the embodiment thus configured, particularly the power lines of the target electric system (negative electrode side lines of the power lines 30 and 32 of the vehicle 20 and the power line of the charging stand 50) during the external charging process. The operation for diagnosing whether or not an abnormality in the decrease in insulation resistance of the negative electrode side power line of 53) has occurred will be described. FIG. 2 is a flowchart showing an example of a diagnostic routine executed by the vehicle ECU 40. This routine is executed when the execution of the external charging process is started.

When the diagnostic routine of FIG. 2 is executed, the CPU 41 of the vehicle ECU 40 determines whether or not an abnormality in the insulation resistance of the target electric system has occurred based on the voltage waveform from the insulation resistance reduction detection device 38 (. Steps S100, S102). This determination can be made, for example, by comparing the amplitude of the voltage waveform from the insulation resistance decrease detection device 38 with the threshold value.

When it is determined in steps S100 and S102 that an abnormality in the insulation resistance of the target electric system has not occurred, it is determined whether or not the execution of the external charging process has been completed (step S110), and the execution of the external charging process is completed. When it is determined that the procedure has not been performed, the process returns to step S100. In this way, the processes of steps S100 to S110 are repeatedly executed, and when it is determined in step S110 that the execution of the external charging process is completed, this routine is terminated.

When it is determined in steps S100 and S102 that an abnormality has occurred in the insulation resistance of the target electric system, the abnormality history information of the SRAM 43 is updated (step S120), and this routine is terminated. In the abnormality history information update process, the identification information of the charging stand determined that the insulation resistance deterioration abnormality of the target electric system has occurred during the external charging process is added. FIG. 3 is an explanatory diagram showing an example of abnormality history information.

Next, the time when the vehicle 20 is brought to the dealer will be described. FIG. 4 is a configuration diagram showing an outline of the configuration of the vehicle 20 and the dealer equipment 59. The dealer equipment 59 includes a charging stand 60 and an abnormality analysis device 70. The charging stand 60 of the dealer equipment 59 has a charging device 62, a charging side connection unit 64 connected to the charging device 62 via a power line 63, and a charging ECU 66, similarly to the charging stand 50 described above.

The abnormality analysis device 70 is configured as a computer including a CPU 71, a ROM 72, an SRAM 73, an SSD 74, an input / output port, and a communication port. The ROM 72 or SSD 74 stores an abnormality analysis tool for analyzing the abnormality history information stored in the SRAM 43 of the vehicle ECU 40 of the vehicle 20. An instruction signal or the like from the keyboard 75 or the mouse 76 is input to the abnormality analysis device 70 via the input port, and a control signal or the like to the display 77 is output from the abnormality analysis device 70 via the output port. The abnormality analysis device 70 can communicate with the vehicle ECU 40 of the vehicle 20 and the charging ECU 66 of the charging stand 60.

Next, the operation of the abnormality analysis device 70 of the dealer equipment 59 will be described. FIG. 5 is a flowchart showing an example of an abnormality analysis routine executed by the abnormality analysis device 70. This routine is executed when the operator operates the keyboard 75 or the mouse 76 at the dealer and is instructed to execute the abnormality analysis tool.

When the abnormality analysis routine of FIG. 5 is executed, the CPU 71 of the abnormality analysis device 70 determines whether or not the abnormality history information is stored in the SRAM 43 of the vehicle ECU 40 of the vehicle 20 by communication with the vehicle ECU 40 (step). S200). This process is a process for determining whether or not there is a history of detecting (detected at least once) an abnormality in the insulation resistance of the target electric system during the external charging process.

When it is determined in step S200 that the abnormality history information is not stored in the SRAM 43, there is no history of detecting a decrease abnormality in the insulation resistance of the target electric system during the external charging process (no decrease abnormality is detected even once). ), And terminate this routine.

When it is determined in step S200 that the abnormality history information is stored in the SRAM 43, it is determined that there is a history of detecting a decrease abnormality in the insulation resistance of the target electric system during the external charging process (the decrease abnormality was detected at least once). The determination is made, and the abnormality history information stored in the SRAM 43 is input from the vehicle ECU 40 by communication (step S210). Then, it is determined whether or not the input abnormality history information includes a plurality of charging stands 50 (step S220). This process is a process of determining whether or not a decrease abnormality in the insulation resistance of the target electric system is detected during the external charge process for the plurality of charging stands 50.

When it is determined in step S220 that the abnormality history information includes a plurality of charging stations 50, it is determined that an abnormality in the insulation resistance of the target electric system has been detected during the external charging process for the plurality of charging stations 50. It is determined that the insulation resistance reduction abnormality has occurred in the vehicle 20 among the vehicle 20 and the plurality of charging stands 50 included in the abnormality history information (step S230), and this routine is terminated.

When it is determined in step S220 that the abnormality history information does not include a plurality of charging stations 50 (only one charging station 50 is included), only one charging station 50 is the target electricity during the external charging process. It is determined that an abnormality in the decrease in the insulation resistance of the system has been detected, and the external charging process for diagnosis, which is an external charging process using the charging stand 60 (charging stand not included in the abnormality history information) of the dealer equipment 59, is executed. It is displayed on the display 77 (step S240). In this way, the operator is instructed to execute the diagnostic external charging process.

Then, when the operator connects the vehicle side connection unit 34 and the charging side connection unit 64 and is instructed to execute the diagnostic external charging process, the diagnostic external charging process is executed. The abnormality analysis device 70 waits for the execution of this diagnostic external charging process to start (step S250), and based on the voltage waveform from the insulation resistance decrease detection device 38, the abnormality analysis device 70 waits for the insulation resistance decrease abnormality of the target electric system. Is determined (steps S260, S262). This process is performed in the same manner as the process of steps S100 and S102 described above.

When it is determined in steps S260 and S262 that an abnormality in the decrease in the insulation resistance of the target electric system has not occurred during the diagnostic external charging process, it is determined whether or not the execution of the diagnostic external charging process has been completed ( Step S270), when it is determined that the execution of the diagnostic external charging process has not been completed, the process returns to step S260. When it is determined in step S270 that the execution of the diagnostic external charging process is completed after waiting for the execution of the diagnostic external charging process to be completed, the insulation resistance of the target electric system is lowered during the diagnostic external charging process. It is determined that no abnormality has occurred, and it is determined that the insulation resistance reduction abnormality has occurred in the charging stand 50 included in the abnormality history information among the vehicle 20 and the charging stand 50 included in the abnormality history information (step S280). , End this routine.

When it is determined in steps S260 and S262 that an abnormality has occurred in the insulation resistance of the target electric system during the diagnostic external charging process, the charging stand 50 included in the abnormality history information and the charging stand 60 of the dealer equipment 59 That is, it is determined that a decrease abnormality in the insulation resistance of the target electric system has been detected for the plurality of charging stations 50 and 60 during the external charging process, and the vehicle 20 and the plurality of charging stations 50 included in the abnormality history information are included. It is determined that the insulation resistance drop abnormality has occurred in the vehicle 20 (step S290), and this routine is terminated.

By such a process, it is possible to determine which of the vehicle 20 and the charging stand 50 included in the abnormality history information has an abnormality in the decrease in insulation resistance during the external charging process.

In the abnormality analysis device 70 of the embodiment described above, the abnormality history information stored in the SRAM 43 is input by communication from the vehicle ECU 40, and it is determined whether or not the input abnormality history information includes a plurality of charging stands 50. do. Then, when the abnormality history information includes a plurality of charging stands 50, it is determined that the insulation resistance reduction abnormality has occurred in the vehicle 20. On the other hand, when the abnormality history information does not include a plurality of charging stands 50 (only one charging stand 50 is included), the display 77 is displayed to execute the diagnostic external charging process, and the diagnostic external is displayed. When no abnormality occurs during the charging process, it is determined that an abnormality has occurred in the insulation resistance reduction at the charging stand 50 included in the abnormality history information, and when an abnormality occurs during the diagnostic external charging process, the vehicle At 20, it is determined that an abnormality in the decrease in insulation resistance has occurred. By such a process, it is possible to determine whether the cause of the abnormality in the external charging process is the vehicle 20 side or the charging stand 50 side.

In the embodiment, the abnormality analysis device 70 of the dealer equipment 59 executes the abnormality analysis routine of FIG. 5, but the vehicle ECU 40 of the vehicle 20 may execute the abnormality analysis routine of FIG. Further, the server 90 may execute the abnormality analysis routine.

FIG. 6 is an explanatory diagram showing an outline of the configuration of the vehicles 20A to 20C and the server 90, and FIG. 7 is a flowchart showing an example of an abnormality analysis routine executed by the server 90. The vehicles 20A to 20C each include vehicle ECUs 40A to 40C similar to the vehicle ECU 40 of the vehicle 20 described above. Similar to the abnormality analysis device 70, the server 90 is configured as a computer including a CPU 91, a ROM 92, an SRAM 93, an SSD 94, an input / output port, and a communication port. The server 90 can communicate with each vehicle 20A to 20C. The number of each vehicle is not limited to three. Further, in this modification, for the sake of ease of explanation, it is assumed that the abnormality history information Ia to Ic are stored in the SRAM 43 of the vehicle ECUs 40A to 40C, respectively.

When the abnormality analysis routine of FIG. 7 is executed, the CPU 91 of the server 90 communicates with the vehicle ECUs 40A to 40C of the vehicles 20A to 20C, and the abnormality history information Ia to Ic stored in the SRAM 43 of the vehicle ECUs 40A to 40C, respectively. Is input from the vehicle ECUs 40A to 40C by communication (step S300), and it is determined whether or not at least two of the input abnormality history information Ia to Ic include the same charging stand (step S310). Then, when it is determined that the same charging stand is included in at least two abnormality history information of the abnormality history information Ia to Ic, it is determined that an abnormality of decrease in insulation resistance has occurred at the charging stand (step S320). , End this routine.

When it is determined in step S310 that the abnormality history information Ia to Ic do not include the same charging stand, it is determined whether or not the abnormality history information of any one of the abnormality history information Ia to Ic includes a plurality of charging stands. Determination (step S330). Then, when it is determined that the abnormality history information of any one of the abnormality history information Ia to Ic includes a plurality of charging stands, the insulation resistance is increased in the vehicle corresponding to the abnormality history information including the plurality of charging stands. It is determined that a deterioration abnormality has occurred (step S340), and this routine is terminated.

When it is determined in step S330 that the abnormality history information of any of the abnormality history information Ia to Ic does not include a plurality of charging stands, which of the vehicle and the charging stand has an abnormality of decrease in insulation resistance? It is determined that the above cannot be determined, and this routine is terminated.

When the server 90 is provided in the dealer equipment 59, the server 90 replaces the processing of steps S330 and S340 of the abnormality analysis routine of FIG. 7 with the processing of steps S220 to S290 of the abnormality analysis routine of FIG. The same processing may be performed.

The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem will be described. In the embodiment, the abnormality analysis device 70 that executes the process of step S210 of the abnormality analysis routine of FIG. 5 corresponds to the “acquisition unit”, and the abnormality analysis device 70 that executes the process of steps S220 to S290 becomes the “determination unit”. Equivalent to.

As for the correspondence between the main elements of the examples and the main elements of the invention described in the column of means for solving the problem, the invention described in the column of means for solving the problems of the examples is carried out. Since it is an example for specifically explaining the mode for solving the problem, the elements of the invention described in the column of means for solving the problem are not limited. That is, the interpretation of the invention described in the column of means for solving the problem should be performed based on the description in the column, and the examples are the inventions described in the column of means for solving the problem. It is just a concrete example.

Although the embodiments for carrying out the present invention have been described above with reference to the embodiments, the present invention is not limited to these examples, and the present invention is not limited to these embodiments, and various embodiments are used without departing from the gist of the present invention. Of course it can be done.

The present invention can be used in the manufacturing industry of anomaly analysis devices and the like.

10 Charging system, 20, 20a, 20B, 20C vehicle, 22 motor, 24 inverter, 26 battery, 26a voltage sensor, 26b current sensor, 28 system main relay, 30, 32, 53, 63 power line, 34 vehicle side connection , 36 Charging relay, 38 Insulation resistance drop detector, 40, 40A, 40B, 40C Vehicle ECU, 41,71,91 CPU, 42,72,92 ROM, 43,73,93 SRAM, 50,60 Charging stand, 52 , 62 Charging device, 54, 64 Charging side connection, 56, 66 Charging ECU, 59 Dealer equipment, 70 Abnormality analyzer, 74 SSD, 75 Keyboard, 76 Mouse, 77 Display 90 Server.

Claims (1)

An abnormality analysis device that includes a vehicle having a storage unit for storing information and a power storage device, and analyzes an abnormality in a charging system that executes an external charging process for charging the power storage device using electric power from a charging stand.
An acquisition unit that acquires abnormality history information including identification information of the charging stand, which is stored in the storage unit when an abnormality occurs during the external charging process.
When the acquired abnormality history information includes a plurality of charging stands, it is determined that an abnormality has occurred in the vehicle, and when the acquired abnormality history information includes one charging stand, it is included in the abnormality history information. It is urged to execute the diagnostic external charging process which is the external charging process using no charging stand, and when no abnormality occurs during the diagnostic external charging process, the charging stand included in the abnormality history information is included. When an abnormality occurs during the diagnostic external charging process, a determination unit that determines that an abnormality has occurred in the vehicle and a determination unit that determines that an abnormality has occurred in the vehicle.
Anomaly analysis device equipped with.

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