DE102022203521A1 - Method for performing diagnostics during a charging process - Google Patents

Abstract

The invention relates to a method for carrying out a diagnosis, in particular of a charging system, preferably a three-part charging system, during a charging process of a vehicle (1), preferably an electric vehicle, at a charging station (3), comprising: - Monitoring the charging process on the side of the vehicle (1), - Monitoring a user's settings (2) during the charging process, - Monitoring the charging process on the side of the charging station (3), - Analyzing results from monitoring, and - Evaluating the charging process depending on the analysis.

Description

The invention relates to a method for carrying out a diagnosis when charging a vehicle, in particular an electric vehicle, at a charging station. The invention further relates to a corresponding computer program product for carrying out a corresponding method. The invention also relates to a corresponding control unit for carrying out a corresponding method. The invention also relates to a corresponding vehicle, a corresponding charging station and/or a corresponding backend unit with a corresponding control unit.

From time to time, charging processes can only be carried out to a limited extent or are canceled, for example due to defects on the vehicle side, e.g. B. due to a battery error, control error, etc., due to defects on the charging station side, e.g. B. due to low power, network fluctuations, switching off the power supply, or due to user misconduct, for example due to inappropriate charging settings, limits for the battery charge level that are set too low, charging speeds that are too high, too many switched on consumers, such as. B. an air conditioning system, incorrect plugging processes, manual terminations, incorrect operation on the smartphone, e.g. double pressing of buttons/menu items on the smartphone, on the vehicle, on the charging station, etc. The user can usually only guess what is causing the problem The charging was interrupted and he often doesn't know whether he himself may have contributed to it. The user usually finds out about the charging interruption too late, for example when he wants to use his vehicle again. The user does not know whether a subsequent loading process will be successful or whether there is a fundamental problem. The user does not receive in-depth information about the reasons for the loading abort and/or loading error, about corrective measures, etc. The user is actively responsible for making a decision regarding a support request from the vehicle manufacturer or the charging station operator. Further analysis of the charging abort and/or charging error to provide help and/or information as to whether the charging station or the vehicle is the cause of the error and/or whether further attempts or a change of charging station or setting changes in the user-defined settings can provide a remedy usually not available to the user. A subsequent analysis in the workshop or at the vehicle manufacturer is only possible to a limited extent due to the information and technical data not being available or no longer available.

The object of the invention is to provide an improved method for carrying out a diagnosis when charging a vehicle, in particular an electric vehicle, at a charging station. In particular, it is the object of the invention to provide a method for carrying out a diagnosis during a charging process, which quickly and reliably detects defects during a charging process, which reliably determines the cause of a charging interruption and/or a charging error, which provides short-term help for the User delivers, which brings about a long-term improvement on the vehicle side, user side and/or charging station side, which increases user comfort, makes operating errors accessible to the user in accordance with his customer's wishes for charging directly when charging is aborted; shows the user possible solutions/alternative procedures for the customer's request when charging (workaround in the event of charging being interrupted), which increases trust in the system and which brings with it cross-functional advantages, for example in the development of vehicles, when operating charging stations, when organizing workshop services, and support services etc. It is also an object of the invention to provide a corresponding computer program product for carrying out a method according to the invention. It is also an object of the invention to provide a corresponding control unit for carrying out a corresponding method. It is also an object of the invention to provide a corresponding vehicle, a corresponding charging station and/or a corresponding backend unit with a corresponding control unit.

The task is solved by: a method for carrying out a diagnosis, in particular of a charging system, preferably a three-part charging system, during a charging process of a vehicle, preferably an electric vehicle, a hybrid vehicle or the like, at a charging station with the features of the independent method claim. Furthermore, the task is solved by: a corresponding computer program product for carrying out a corresponding method with the features of the independent product claim. In addition, the task is solved by: a corresponding control unit for carrying out a corresponding method with the features of the independent device claim. In addition, the task is solved by: a corresponding vehicle, a corresponding charging station and / or a corresponding backend unit with a corresponding control unit with the features of the corresponding subordinate device claims. Features that are described in connection with individual aspects and/or embodiments of the invention also apply in context with the other aspects and/or embodiments and vice versa, so that reference to the individual aspects and/or embodiments of the invention is or can always be made mutually with regard to the disclosure.

• - Überwachen des Ladevorganges auf der Seite des Fahrzeuges (bspw. unmittelbar am Fahrzeug, z. B. durch Vermessen/Abfragen/Erhalten/Aufzeichnen von entsprechenden Einstellungen und/oder Betriebsparametern an den Funktionspartnern für den Ladevorgang auf der Seite des Fahrzeuges),
• - Überwachen von Einstellungen eines Benutzers beim Ladevorgang (bspw. unmittelbar am Fahrzeug und/oder an der Ladestation, z. B. durch Abfragen/Erhalten/Aufzeichnen von entsprechenden Einstellungen, wie z. B. eingestellte Grenzen für den Ladezustand der Batterie, für Ladegeschwindigkeiten, für parallel zum Ladevorgang betriebene Verbraucher, korrekt hergestellte Steckverbindungen usw.,
• - Überwachen des Ladevorganges auf der Seite der Ladestation (bspw. mittelbar durch Abfragen/Erhalten von externen Daten über die Ladestation von einem externen Anbieter und/oder unmittelbar an der Ladestation, z. B. durch Vermessen/Abfragen/Erhalten/Aufzeichnen von entsprechenden Einstellungen und/oder Betriebsparametern an den Funktionspartnern für den Ladevorgang auf der Seite der Ladestation),
• - Analysieren von Ergebnissen vom Überwachen (bspw. direkt am Fahrzeug und/oder extern auf einer zentralen Backendeinheit, wobei hierzu eine speziell dazu eingerichtete Steuereinheit im Fahrzeug oder in der zentralen Backendeinheit vorgesehen sein kann, oder wobei hierzu eine verteilte Steuereinheit im Fahrzeug und in der zentralen Backendeinheit vorgesehen sein kann), und
• - Bewerten des Ladevorganges in Abhängigkeit vom Analysieren (bspw. direkt am Fahrzeug und/oder extern auf einer zentralen Backendeinheit, z. B. mithilfe einer entsprechenden Steuereinheit im Fahrzeug und/oder in der zentralen Backendeinheit).

The invention provides: a method for carrying out a diagnosis during a charging process of (at least) a vehicle, in particular an electric vehicle, at (at least) one charging station, comprising:

• - Monitoring the charging process on the side of the vehicle (e.g. directly on the vehicle, e.g. by measuring/querying/receiving/recording corresponding settings and/or operating parameters on the functional partners for the charging process on the side of the vehicle),
• - Monitoring a user's settings during the charging process (e.g. directly on the vehicle and/or at the charging station, e.g. by querying/receiving/recording corresponding settings, such as set limits for the battery charge level, for charging speeds , for consumers operated in parallel to the charging process, correctly made plug connections, etc.,
• - Monitoring the charging process on the charging station side (e.g. indirectly by querying/receiving external data about the charging station from an external provider and/or directly at the charging station, e.g. by measuring/querying/receiving/recording corresponding settings and/or operating parameters on the functional partners for the charging process on the charging station side),
• - Analyzing results from monitoring (e.g. directly on the vehicle and / or externally on a central backend unit, for which purpose a specially designed control unit can be provided in the vehicle or in the central backend unit, or for this purpose a distributed control unit in the vehicle and in the central backend unit can be provided), and
• - Evaluating the charging process depending on the analysis (e.g. directly on the vehicle and/or externally on a central backend unit, e.g. using a corresponding control unit in the vehicle and/or in the central backend unit).

The method provides a comprehensive, preferably automatic, charging diagnosis using extended charging error monitoring. The charging process and the corresponding settings and/or operating parameters are monitored, analyzed and evaluated by and/or by at least three system partners (vehicle, user, charging station, although other system partners may also be possible). Preferably, an automatic analysis and identification of the cause of a charging interruption and/or a charging error can be carried out based on the collected data. The analysis can be carried out at least partially “onboard” (e.g. in the vehicle itself) and/or at least partially “offboard” (e.g. on an external backend unit) with corresponding data exchange and/or use. An exchange and/or use of the data on an external backend unit can advantageously be expanded to include additional data from other databases and/or services. The data can be cataloged, stored and made available to customers, vehicle manufacturers, charging station operators, navigation services, development teams and service providers.

In an advantageous way, the user can be included in the analysis and/or evaluation process using the method, for example through an online survey, by offering a more in-depth error analysis, through recommendations for action, for example to visit a workshop, to turn off the vehicle, for feedback to the charging station operator, etc. In addition, it can be advantageous if it is suggested to the customer, in particular to achieve the customer's request, to charge the vehicle, to carry out a workaround/change to settings, to initiate a change to the charging station, to change the charging method (e.g. from DC charging to AC charging if available, from time-shifted to instant charging, etc.) etc.

In addition, the process can be used to create a variety of subsequent services/functions, for example in vehicle development, charging network design/development, closing specification gaps, improving user conditions (also in the operation/application and robustness of charging stations, vehicles and services) , improving user comfort, etc.

As part of the procedure, a diagnosis for vehicle vs. charging station vs. customer service can be carried out. Corresponding functional partners for the charging process (control devices, energy supply, settings, operation) can be measured, monitored, queried, recorded and/or examined. The charging process itself can be recorded. Battery data such as: B. charge status and / or temperature of the battery and / or charging network voltage recorded as a function of time the. Environmental parameters can also be taken into account, for example with regard to insulation measurement. In addition, other data sources can be queried, for example a charging station operator, a weather service, a navigation service provider, a vehicle manufacturer, a vehicle swarm provider (swarm data analysis), a service station for vehicles, a service station for charging stations and/or another or more vehicle(s), etc. For For the diagnostic target, the already collected error analysis data can be referenced as a data source and/or newly collected data can be linked/supplemented in an error cause database.

The method can contribute to a growing and improved error cause database for charging processes at least partially “onboard” (e.g. in the vehicle itself) and/or at least partially “offboard” (e.g. on an external backend unit).

Analytics can also be used in development (testing, securing, reducing development effort, providing services, customer support, etc.) and in user interaction (for reporting, recommendations, alerts, queries, etc.).

As a result of the analysis and/or evaluation, the method provides at least the cause of a charging interruption and/or a charging error, which can lie with the vehicle, the charging station or with customer service. The results can be displayed directly in the vehicle, for example using an input and/or output unit, and/or using a user-side mobile device, for example via app, email, etc.

An evaluation/classification of the analysis results can advantageously be carried out for display to the user. Critical topics can be output via push messages, for example, possibly with measures/recommendations to eliminate errors and/or minimize risks. Assumptions about incorrect operation can, for example, be output as information. Product optimizations can, for example, be issued as internal measures, preferably with the option for the user to view them.

The method can therefore be used to provide an improved diagnosis of a charging process, which quickly and reliably detects defects in a charging process, which reliably determines the cause of a charging interruption and/or a charging error, which provides short-term help for the user, and which provides long-term help Improvement on the vehicle side, user side and/or charging station side, which increases user comfort, increases trust in the electrical system and which brings cross-functional advantages, for example in the development of vehicles, in the operation of charging stations, in the organization of workshop services Providing support services, designing the charging network, supporting navigation services, etc.

• - der Ladevorgang gestartet wird,
• - ein Fehler bei dem Ladevorgang erkannt wird, und/oder
• - der Ladevorgang abgebrochen wird.

It can also be stipulated that the procedure is initiated if:

• - the charging process is started,
• - an error is detected during the loading process, and/or
• - the charging process is aborted.

If the procedure is initiated with the start of the charging process, the charging process can be diagnosed for errors regardless of whether an error is detected and/or whether the charging process is aborted. In this way, advanced analysis for charging processes can be carried out. If the method is initiated with the detection of a charging error and/or a charging abort, the computing effort can be avoided, while at the same time a targeted charging error diagnosis can be made possible.

• - (mindestens) ein (bspw. zentrales) Steuergerät des Fahrzeuges,
• - ein Energiemanagementsystem des Fahrzeuges,
• - ein Batteriemanagementsystem des Fahrzeuges,
• - mindestens eine Batterie,
• - elektrische Anschlusssysteme, und/oder
• - elektronische Ladegeräte.

Furthermore, it can be provided that when monitoring the charging process on the side of the vehicle, at least one of the following functional partners on the vehicle is monitored:

• - (at least) one (e.g. central) control unit of the vehicle,
• - a vehicle energy management system,
• - a vehicle battery management system,
• - at least one battery,
• - electrical connection systems, and/or
• - electronic chargers.

In this way, comprehensive data can be obtained to create a charging process diagnosis on the vehicle side. Operating parameters and/or settings of the functional partners can be actively measured, actively queried, passively received and/or recorded for further analysis, for example in the form of log files.

Furthermore, it can be provided that the monitoring of the loading process on the side of the vehicle is carried out directly by measuring, Querying and/or obtaining corresponding operating parameters and/or settings from functional partners for the charging process on the vehicle is carried out. In this way, representative data can be obtained for creating a charging process diagnosis on the vehicle side.

In addition, it can be provided that when monitoring the charging process on the side of the vehicle and / or on the side of the charging station, at least one environmental parameter, such as. B. temperature, humidity, pressure, etc., is taken into account, and / or that when monitoring the charging process on the side of the vehicle and / or on the side of the charging station, at least one backend function, in particular a plug-and-charge backend function, a book -and-reserve backend function, etc., is taken into account. In this way, external influences, in particular due to weather influences, can be included when creating a charging process diagnosis on the side of the vehicle and/or on the side of the charging station.

• - elektrische Ladeeinstellungen auf der Seite des Fahrzeuges,
• - elektrische Ladeeinstellungen auf der Seite der Ladestation,
• - gewünschter Ladezustand einer Batterie,
• - gewünschter Lademodus, wie z. B. schnelles Laden, geräteschonendes Laden, kostenoptimiertes Laden usw.,
• - gewünschte Ladedauer,
• - eingeschaltete elektrische Verbraucher im Fahrzeug,
• - mechanische Steckverbindungen,
• - elektrische Kontakte auf der Seite des Fahrzeuges und/oder auf der Seite der Ladestation,
• - Ladekommunikation,
• - Vertragslaufzeiten,
• - Authentifizierungsinformationen,
• - gebuchte und/oder reservierte Zeitslots,
• - technische Leistungs- und/oder Funktionsbegrenzungen, insbesondere abhängig von Lebensdauer, Umweltbegrenzung und/oder Ladefunktionen, wie z. B. bidirektionales Laden, usw.

It can also be provided that when monitoring the loading process on the user's side, at least one of the following settings is monitored:

• - electrical charging settings on the side of the vehicle,
• - electrical charging settings on the side of the charging station,
• - desired state of charge of a battery,
• - desired charging mode, such as B. fast charging, device-friendly charging, cost-optimized charging, etc.,
• - desired charging time,
• - switched on electrical consumers in the vehicle,
• - mechanical plug connections,
• - electrical contacts on the side of the vehicle and/or on the side of the charging station,
• - charging communication,
• - contract terms,
• - authentication information,
• - booked and/or reserved time slots,
• - technical performance and/or functional limitations, in particular depending on service life, environmental limitations and/or charging functions, such as. B. bidirectional charging, etc.

In this way, extended data can be obtained for creating a charging process diagnosis based on user behavior, in particular in operative connection with a specific vehicle, a specific vehicle type, a specific charging station and/or a specific charging station type.

• - Geräteeinstellungen,
• - Netzeinstellungen,
• - Ladespannung,
• - Zustand einer Steuerleitung,
• - Spannungslage und/oder -Ladefrequenz,
• - Ladeleistung, und/oder
• - Leistungsschwankungen,
• - Ladekommunikation,
• - Authentifizierungsmöglichkeiten,
• - Bezahlsystem, usw.

Furthermore, it can be provided that when monitoring the charging process on the charging station side, at least one of the following operating parameters and / or settings is monitored:

• - device settings,
• - network settings,
• - charging voltage,
• - state of a control line,
• - voltage level and/or charging frequency,
• - charging power, and/or
• - performance fluctuations,
• - charging communication,
• - authentication options,
• - Payment system, etc.

In this way, advanced data can be obtained to create charging diagnostics on the charging station side.

On the one hand, the monitoring of the charging process on the charging station side can be carried out directly by measuring, querying and/or obtaining corresponding operating parameters and/or settings from functional partners for the charging process at the charging station. Although this requires effort in collecting data to create charging diagnostics on the charging station side, it can lead to more refined results when creating charging diagnostics on the charging station side.

On the other hand, the monitoring of the charging process on the charging station side can be carried out indirectly by querying and/or obtaining existing information about the charging station from a backend unit external to the vehicle. In this way, the effort involved in collecting data to create a charging diagnosis on the charging station side can be reduced. The data can also be expanded to include further relevant information, for example from the charging station operator and/or from other vehicles that used the charging station. For example, another vehicle that previously used the charging station may have already reported a charging station error. The process can be done directly access such information. With the help of external data sources, quick and extended results can be achieved when creating a charging process diagnosis on the charging station side.

Furthermore, it can be provided that the analyzing and/or evaluation is carried out at least in part by a vehicle-side control unit and/or at least in part by a back-end unit external to the vehicle. In this way, the computing and storage resources in the vehicle and in the backend unit can be used in an advantageous manner. It is conceivable that the collection of data for fault diagnosis on the vehicle and/or for user misconduct is carried out on site. The analysis and/or evaluation of the data can be carried out at least partially “onboard” and/or at least partially “offboard” with corresponding data extraction.

When analyzing and/or evaluating, an error diagnosis can advantageously be carried out on the side of the vehicle, on the other hand an error diagnosis on the user's side and also an error diagnosis on the side of the charging station. In this way, improved charging diagnostics can be provided using expanded charging error monitoring. A database created through active error analyzes can also be used for the active error analysis of a charging problem that occurs (known error at charging station/charging station type, combination with a special vehicle/vehicle type, with user/operating behavior, possibly also other users, known implementation errors at charging station/charging station type or vehicle/vehicle type, standard restrictions/shortcomings, workarounds, etc.)

Furthermore, it can be advantageous if the results of the monitoring, analysis and/or evaluation are stored in a vehicle-side and/or vehicle-external storage unit. The data can be used to create an expanded error database that can be important for participating charging system participants. An expanded error database can also be important for general/typical charging errors and/or charging aborts for different charging systems and different charging system participants. An expanded error database can also be beneficial for cross-functional use of the data, for example when developing vehicles, operating charging stations, organizing workshop services, providing support services, designing the charging network, supporting navigation services, etc.

In addition, it can be advantageous if the results of the monitoring, analysis and/or evaluation are compared to another database of a charging station operator, a weather service, a navigation service provider, a vehicle manufacturer, a vehicle swarm provider, a service station for vehicles and/or charging stations and/or one or more additional vehicles, etc. can be supplemented, shared, checked and/or consolidated. In this way, improved results can be achieved when creating charging diagnostics.

It can also be advantageous if the results of the monitoring, analysis and/or evaluation are sent to the user, to an infrastructure participant, such as. B. be transmitted to a charging station operator, to a vehicle manufacturer, to a vehicle swarm provider, to a service station for vehicles and / or charging stations and / or to other vehicles. In this way, the data can be used by other infrastructure participants. This can be done for a fee and/or exchanging data.

• - eine Empfehlung für verbesserte Ladeeinstellungen,
• - einen kurzfristigen und/oder langfristigen Handlungsvorschlag, wie z. B: Ladevorgang noch einmal starten, Einstellungen ändern, Ladesäulenhersteller kontaktieren, Ladestation wechseln, Werkstatt aufsuchen, Reparaturanfrage erstellen (z. B. über ein beliebiges, ggf. nach Wunsch auszuwählendes, Frontend (Smartphone, Watch, Augmented Reality, usw.),
• - eine Warnung über einen Fehler auf der Seite des Fahrzeuges und/oder auf der Seite der Ladestation,
• - ein Servicevorschlag zum Beheben eines Fehlers,
• - eine Supportanfrage, und/oder
• - eine Serviceabfrage.

In order to create an improved interaction with the user and/or to involve the user in the method, at least one of the following information can be sent to the vehicle, to the user of the vehicle and/or, depending on the monitoring, analysis and/or evaluation to the charging station, for example using the vehicle, a user device or similar:

• - a recommendation for improved loading settings,
• - a short-term and/or long-term suggestion for action, such as: B: Start the charging process again, change settings, contact the charging station manufacturer, change the charging station, visit a workshop, create a repair request (e.g. via any front end (smartphone, watch, augmented reality, etc.), which can be selected as desired),
• - a warning about an error on the side of the vehicle and/or on the side of the charging station,
• - a service suggestion to fix an error,
• - a support request, and/or
• - a service query.

For the purpose of support requests and/or service queries, the user can be offered the opportunity to answer a list of questions. Others can also Error analyzes and/or integration into product improvement are offered.

The invention further provides: a computer program product comprising instructions which, when the computer program product is executed by a computer, cause the computer to carry out a method which can run as described above. With the help of the computer program product according to the invention, the same advantages can be achieved that were described above in connection with the method according to the invention. These advantages are fully referenced here.

The invention further provides: a control unit, comprising a computing unit and a storage unit in which a code is stored which, when at least partially executed by the computing unit, carries out a method which can run as described above. The control unit can be deployed using computing and storage resources in the vehicle and in the backend unit. With the help of the control unit according to the invention, the same advantages can be achieved that were described above in connection with the method according to the invention. These advantages are fully referenced here.

The invention further provides: a vehicle with a control unit, which can be designed as described above. With the help of the vehicle according to the invention, the same advantages can be achieved that were described above in connection with the method according to the invention and/or with the control unit according to the invention. These advantages are fully referenced here.

The invention also provides: a charging station with a control unit, which can be designed as described above. With the aid of the charging station according to the invention, the same advantages can be achieved that were described above in connection with the method according to the invention and/or with the control unit according to the invention. These advantages are fully referenced here.

The invention also provides: a backend unit with a control unit, which can be designed as described above. With the help of the back end unit according to the invention, the same advantages can be achieved that were described above in connection with the method according to the invention and/or with the charging device according to the invention. These advantages are fully referenced here.

• 1 eine schematische Darstellung eines Ladesystems zum Durchführen eines erfindungsgemäßen Verfahrens.

Furthermore, the invention is shown in more detail with reference to the figure. It should be noted that the figure is only descriptive and is not intended to limit the invention in any way. It shows:

• 1 a schematic representation of a charging system for carrying out a method according to the invention.

The 1 serves to explain a method within the meaning of the present disclosure. The method is used to carry out a diagnosis, in particular of a charging system, preferably a three-part charging system, during a charging process of at least one vehicle 1, preferably an electric vehicle, at at least one charging station 3, comprising the following actions/procedural steps.

101

Überwachen des Ladevorganges auf der Seite des Fahrzeuges 1.

On the one hand:

101

Monitoring the charging process on the side of the vehicle 1.

The monitoring can, for example, take place directly on the vehicle 1, e.g. B. by measuring/querying/receiving/recording corresponding settings and/or operating parameters on the functional partners for the charging process on the side of the vehicle 1. This will be discussed in detail below.

102

Überwachen von Einstellungen eines Benutzers 2 am Fahrzeug 1 und/oder an der Ladestation 3 beim Ladevorgang.

On the other hand:

102

Monitoring settings of a user 2 on the vehicle 1 and/or on the charging station 3 during the charging process.

The monitoring can, for example, take place directly on the vehicle 1 and/or at the charging station 3, e.g. B. by querying/receiving/recording corresponding settings, such as. B. set limits for the state of charge of the battery, for charging speeds, for electrical consumers in the vehicle 1 that are operated in parallel to the charging process, correctly manufactured mechanical and / or electrical plug connections, etc. This will be discussed in detail below.

103

Überwachen des Ladevorganges auf der Seite der Ladestation 3.

In addition:

103

Monitoring the charging process on the charging station side 3.

Monitoring can, for example, be done indirectly by querying/receiving external data via the charging station 3 from an external provider. Monitoring can also take place directly at the charging station 3, e.g. B. by measuring/querying generating/receiving/recording corresponding settings and/or operating parameters on the functional partners for the charging process on the side of the charging station 3. This will be discussed in more detail below.

104

Analysieren von Ergebnissen vom Überwachen in den Schritten 101, 102 und 103.

In addition:

104

Analyze results from monitoring in steps 101, 102, and 103.

How it is 1 indicates, the analysis can take place, for example, directly on the vehicle 1 and/or externally on a central backend unit 4. For this purpose, a specially designed control unit can be provided in the vehicle 1 or in the central backend unit 4. For this purpose, a distributed control unit can also be provided in the vehicle 1 and in the central backend unit 4. This will be discussed in more detail below.

105

Bewerten des Ladevorganges in Abhängigkeit vom Analysieren.

In addition:

105

Evaluating the charging process depending on the analysis.

How it is 1 indicates, the evaluation of the charging process can take place, for example, directly on the vehicle 1 and/or externally on a central backend unit 4. For this purpose, a specially designed control unit can be provided in the vehicle 1 or in the central backend unit 4. For this purpose, a distributed control unit can also be provided in the vehicle 1 and in the central backend unit 4. This will be discussed in more detail below.

The method serves to enable comprehensive, preferably automatic, charging diagnosis using extended charging error monitoring. The charging process and the corresponding settings and/or operating parameters are monitored (steps 101, 102, 103), analyzed (step 104) and evaluated (step 105) at three system partners 1, 2, 3, namely vehicle 1, user 2 and charging station 3 ).

The method can advantageously be carried out automatically. In this way, an automatic analysis and identification of the cause of a charging abort and/or the source of a charging error can be carried out.

As already indicated above in connection with steps 104 and 105, the analysis 104 and/or evaluation 105 can take place at least partially in the vehicle itself and/or at least partially on an external backend unit 4. The 1 indicates a corresponding data exchange 106 between the vehicle 1 and the external backend unit 4 with dashed arrows. The data exchange 106 can be based on wireless communication, such as. B. Internet, mobile communications and/or WLAN.

The analysis 104 and/or evaluation 105 of the data obtained in steps 101, 102 and 103 can advantageously be expanded to include additional data from other databases 5 and/or services. The evaluated data can also be cataloged and stored in an error cause database 6 (to be created and/or already existing). The method can lead to a growing and improved root cause database 6 for loading processes.

The evaluated data can be made available to customers, vehicle manufacturers, charging station operators, navigation services, development teams and service providers in order to preferably provide cross-functional services, for example in vehicle development, charging network design/development, closing specification gaps, improving user conditions ( also in operation/application and robustness of charging stations, vehicles and services), in improving user comfort, etc.

Advantageously, using the method, the user 2 can be included in the analysis 104 and/or evaluation 105, for example through an online survey, by offering a more in-depth error analysis, through recommendations for action, for example to visit a workshop, to park the vehicle , for feedback to the charging station operator, etc.

The results of the analysis 104 and/or evaluation 105 can be displayed directly in the vehicle 1, for example using an input and/or output unit, such as. B. an infotainment unit and / or a navigation unit, and / or using a user-side mobile device 7, for example via app, email, augmented reality function, etc.

An evaluation/classification of the analysis results can also be carried out for a display to the user 2. The more critical a detected error is, the more frequently and/or more intensively the notification to the user 2 can occur. Critical topics can be output via push messages, for example. In addition to the cause of the error, measures/recommendations for eliminating errors and/or minimizing risks can also be displayed. Rather uncritical errors can, for example, be output as information. Errors that can lead to product optimization are addressed directly to vehicle manufacturers and/or charging station operators, and are also offered to the user for viewing.

The method can provide an improved diagnosis of a charging process, which quickly and reliably detects defects in a charging process, which reliably determines the cause of a charging interruption and/or a charging error, which provides short-term help for the user 2, which provides a long-term improvement the vehicle side, user side and/or charging station side, which increases user comfort, increases trust in the vehicle 1 and the charging network and which brings cross-functional advantages, for example in the development of vehicles, in the operation of charging stations, in the organization of workshop services , providing support services, designing the charging network, supporting navigation services, etc.

100a

der Ladevorgang gestartet wird,

100b

ein Fehler bei dem Ladevorgang erkannt wird, und/oder

100c

der Ladevorgang abgebrochen wird.

Furthermore, the 1 indicates that the procedure can be initiated if:

100a

the charging process is started,

100b

an error is detected during the charging process, and/or

100c

the charging process is aborted.

If the procedure is initiated every time a charging process is started, charging processes can be checked for errors regardless of whether an error is detected and/or whether the charging process is aborted. In this way, advanced analysis of loading processes can be provided. If the method is initiated with the detection of a charging error and/or a charging abort, the computing effort can be avoided, while at the same time a targeted charging error diagnosis can be provided.

• - mindestens ein bspw. zentrales Steuergerät des Fahrzeuges 1,
• - ein Energiemanagementsystem des Fahrzeuges 1,
• - ein Batteriemanagementsystem des Fahrzeuges 1,
• - mindestens eine Batterie,
• - elektrische Anschlusssysteme, und/oder
• - elektronische Ladegeräte.

When monitoring the charging process on the side of the vehicle 1 in step 101, at least one of the following functional partners on the vehicle 1 can be monitored:

• - at least one, for example, central control unit of the vehicle 1,
• - an energy management system of the vehicle 1,
• - a battery management system of the vehicle 1,
• - at least one battery,
• - electrical connection systems, and/or
• - electronic chargers.

Operating parameters and/or settings of the functional partners for the charging process on the vehicle side 1 can be actively measured, actively queried, passively received and/or recorded for further analysis, for example in the form of log files.

When monitoring the charging process on the side of the vehicle 1 in step 101 and / or on the side of the charging station 3 in step 103, at least one environmental parameter, such as. B. temperature, humidity, pressure, etc., are taken into account. External influences, in particular due to weather conditions, can thus be taken into account when creating a charging process diagnosis on the side of the vehicle 1 and/or on the side of the charging station 3.

• - elektrische Ladeeinstellungen auf der Seite des Fahrzeuges 1,
• - elektrische Ladeeinstellungen auf der Seite der Ladestation 3
• - gewünschter Ladezustand einer Batterie,
• - gewünschter Lademodus, wie z. B. schnelles Laden, geräteschonendes Laden, kostenoptimiertes Laden usw.,
• - gewünschte Ladedauer,
• - eingeschaltete elektrische Verbraucher im Fahrzeug 1,
• - mechanische Steckverbindungen,
• - elektrische Kontakte auf der Seite des Fahrzeuges 1 und/oder auf der Seite der Ladestation 3,
• - Ladekommunikation,
• - Vertragslaufzeiten,
• - Authentifizierungsinformationen,
• - gebuchte und/oder reservierte Zeitslots,
• - technische Leistungs- und/oder Funktionsbegrenzungen, insbesondere abhängig von Lebensdauer, Umweltbegrenzung und/oder Ladefunktionen, wie z. B. bidirektionales Laden, usw.

When monitoring the loading process on the user 2 side in step 102, at least one of the following settings can be monitored:

• - electrical charging settings on the side of the vehicle 1,
• - electrical charging settings on the charging station side 3
• - desired state of charge of a battery,
• - desired charging mode, such as B. fast charging, device-friendly charging, cost-optimized charging, etc.,
• - desired charging time,
• - switched on electrical consumers in vehicle 1,
• - mechanical plug connections,
• - electrical contacts on the side of the vehicle 1 and/or on the side of the charging station 3,
• - charging communication,
• - contract terms,
• - authentication information,
• - booked and/or reserved time slots,
• - technical performance and/or functional limitations, in particular depending on service life, environmental limitations and/or charging functions, such as. B. bidirectional charging, etc.

• - Geräteeinstellungen,
• - Netzeinstellungen,
• - Ladespannung,
• - Ladeleistung, und/oder
• - Leistungsschwankungen usw.

When monitoring the charging process on the charging station 3 side in step 103, at least one of the following operating parameters and / or settings can be monitored:

• - device settings,
• - network settings,
• - charging voltage,
• - charging power, and/or
• - performance fluctuations etc.

How it is 1 using a dashed arrow 103a, the monitoring of the charging process on the side of the charging station 3 can be carried out directly by measuring, querying and/or obtaining corresponding operating parameters and/or settings from functional partners for the charging process at the charging station 3.

How it is 1 indicates with the help of a dashed arrow 103b, the monitoring of the charging process on the side of the charging station 3 can be carried out indirectly by querying and/or obtaining existing information about the charging station 3 from a backend unit 4 external to the vehicle.

How it is 1 indicates using a dashed arrow, the analyzing in step 104 and/or the evaluation in step 105 can be carried out at least in part by a vehicle-side control unit and/or at least in part by a back-end unit 4 external to the vehicle. In this way, the computing and storage resources in the vehicle 1 and in the backend unit 4 can be used in an advantageous manner. It is conceivable that the collection of data for the fault diagnosis on the vehicle 1 and/or for the misconduct of the user 2 is carried out on site. The analysis 104 and/or the evaluation 105 of the data obtained in steps 101, 102 and 103 can be carried out at least partially “onboard” and/or at least partially “offboard” with a corresponding data exchange 106. As already mentioned above, the data exchange 106 can be based on wireless communication, such as. B. Internet, mobile communications and/or WLAN.

When analyzing and/or evaluating, an error diagnosis can advantageously be carried out on the side of the vehicle 1, on the other hand an error diagnosis on the side of the user 2 and also an error diagnosis on the side of the charging station 3. In this way, improved charging diagnostics can be provided using expanded charging error monitoring.

Furthermore, it can be advantageous if the results of the monitoring, analysis and/or evaluation are stored in a vehicle-side and/or vehicle-external storage unit. The data can be used to create an expanded error cause database 6. The error cause database 6 can be used for participating charging system participants. The error cause database 6 can also be used/offered for basic/typical charging errors and/or charging aborts for different charging systems and different charging system participants. An extended error database 6 can also be used/offered for cross-functional use of the data, for example when developing vehicles, operating charging stations, organizing workshop services, providing support services, designing the charging network, supporting navigation services etc.

As already mentioned above, the results of the monitoring 101, 102, 103, the analysis 104 and/or the evaluation 105 can be compared with a further database 5 of a charging station operator, a weather service, a navigation service provider, a vehicle manufacturer, a vehicle swarm provider, a service station for vehicles and /or charging stations and/or other vehicles can be supplemented, shared, checked and/or consolidated.

As already mentioned above, the results of the monitoring 101, 102, 103, the analysis 104 and/or the evaluation 105 can be sent to other infrastructure participants 8, such as. B. charging station operators, vehicle manufacturers, vehicle swarm providers, service stations for vehicles and/or charging stations and/or to other vehicles. In this way, use of the data by other infrastructure participants 8 can be made possible. This can be done for a fee and/or exchanging data.

Furthermore, it can be provided that the other infrastructure participants 8 can share their data with the vehicle 1, the user 2 and/or the backend unit 4.

Furthermore, it can be provided that the other infrastructure participants 8 can create error diagnoses and/or measures/recommendations, for example in the form of updates and/or information, for error elimination and/or risk minimization to the vehicle 1, the user 2 and/or the charging station 3 can transmit.

• - eine Empfehlung für verbesserte Ladeeinstellungen,
• - eine Warnung über einen Fehler auf der Seite des Fahrzeuges 1 und/oder auf der Seite der Ladestation 3,
• - ein Servicevorschlag zum Beheben eines Fehlers,
• - eine Supportanfrage, und/oder
• - eine Serviceabfrage.

In order to create an improved interaction with the user 2 and/or to include the user 2 in the method, at least one of the following information can be sent to the user depending on the monitoring 101, 102, 103, the analysis 104 and/or the evaluation 105 2 of the vehicle 1 are output, for example using the vehicle 1 or a user-side mobile device 7:

• - a recommendation for improved loading settings,
• - a warning about an error on the side of the vehicle 1 and/or on the side of the charging station 3,
• - a service suggestion to fix an error,
• - a support request, and/or
• - a service query.

For the purpose of a support request and/or service query, the user can be offered the option of using an app on their mobile device 7, a service telephone and, for example, answering a questionnaire.

A corresponding control unit also represents an aspect of the invention, comprising a computing unit and a storage unit in which a code is stored which, when at least partially executed by the computing unit, carries out a method which can run as described above. The control unit can be provided as a cohesive or a distributed control unit with multiple modules using computing and storage resources in the vehicle 1 and in the backend unit 4.

A vehicle 1 with such a control unit or with some modules of such a control unit also represents an aspect of the invention.

A charging station 3 with such a control unit or with some modules of such a control unit also represents an aspect of the invention.

A backend unit 4 with such a control unit or with some modules of such a control unit also represents an aspect of the invention.

The above description of the figure describes the present invention exclusively in the context of examples. Of course, individual features of the embodiments can, if it makes technical sense, be freely combined with one another without departing from the scope of the invention.

Reference symbol list

1

vehicle

2

user

3

Charging station

4

Back end unit

5

Database

6

Error cause database

7

Mobile device

8th

Infrastructure participants

100a

Starting a charging process

100b

Error during a loading process

100c

Aborting a loading process

101

Monitor

102

Monitor

103

Monitor

103a

immediate monitoring

103b

indirect monitoring

104

Analyze

105

Evaluate

106

Data exchange

Claims (12)

Method for carrying out a diagnosis, in particular of a charging system, preferably a three-part charging system, during a charging process of a vehicle (1), preferably an electric vehicle, at a charging station (3), comprising: - Monitoring the loading process on the side of the vehicle (1), - Monitoring a user's settings (2) during the loading process, - Monitoring the charging process on the side of the charging station (3), - Analyzing results from monitoring, and - Evaluate the charging process depending on the analysis. Procedure according to Claim 1 , whereby the procedure is initiated when: - the charging process is started, - an error in the charging process is detected, and / or - the charging process is aborted. Method according to one of the preceding claims, wherein when monitoring the charging process on the side of the vehicle (1), at least one of the following functional partners on the vehicle (1) is monitored: - a control unit of the vehicle (1), - an energy management system of the vehicle ( 1), - a battery management system of the vehicle (1), - at least one battery, - electrical connection systems, and/or - electronic chargers, and/or wherein the charging process on the side of the vehicle (1) is monitored directly by measuring, querying and/or obtaining corresponding operating parameters and/or settings from functional partners for the charging process is carried out on the vehicle (1), and/or wherein at least one environmental parameter, such as e.g. B. temperature, humidity, pressure, etc., is taken into account, and / or at least one backend function, in particular a plug-and-play, is taken into account when monitoring the charging process on the side of the vehicle (1) and / or on the side of the charging station (3). Charge backend function, a book and reserve backend function, etc. are taken into account. Method according to one of the preceding claims, wherein at least one of the following settings is monitored when monitoring the loading process on the user's side (2): - electrical charging settings on the side of the vehicle (1), - electrical charging settings on the side of the charging station (3) - desired state of charge of a battery, - desired charging mode, such as B. fast charging, device-friendly charging, cost-optimized charging, etc., - desired charging time, - switched on electrical consumers in the vehicle (1), - mechanical plug connections, - electrical contacts on the side of the vehicle (1) and/or on the side of the charging station (3), - charging communication, - contract terms, - authentication information, - booked and/or reserved time slots, - technical performance and/or functional limitations, in particular depending on service life, environmental limitations and/or charging functions, such as. B. bidirectional charging, etc. Method according to one of the preceding claims, wherein when monitoring the charging process on the side of the charging station (3), at least one of the following operating parameters and / or settings is monitored: - device settings, - network settings, - charging voltage, - charging power, and/or - performance fluctuations etc., and/or wherein the monitoring of the charging process on the side of the charging station (3) is carried out directly by measuring, querying and/or obtaining corresponding operating parameters and/or settings of functional partners for the charging process at the charging station (3), and/or wherein the monitoring of the charging process on the side of the charging station (3) is carried out indirectly by querying and/or obtaining existing information about the charging station (3) from a backend unit (4) external to the vehicle. Method according to one of the preceding claims, wherein the analyzing and/or evaluation is carried out at least in part by a vehicle-side control unit and/or at least in part by a back-end unit (4) external to the vehicle, and/or wherein when analyzing and/or evaluating, an error diagnosis is carried out on the side of the vehicle (1), an error diagnosis on the user's side (2) and an error diagnosis on the side of the charging station (3). Method according to one of the preceding claims, wherein the results of the monitoring, the analysis and / or the evaluation are stored in a vehicle-side and / or vehicle-external storage unit, and / or wherein the results of the monitoring, the analysis and / or the evaluation with another The database of a charging station operator, a weather service, a navigation service provider, a vehicle manufacturer, a vehicle swarm provider, a service station for vehicles and/or charging stations and/or another vehicle is supplemented, shared, checked and/or consolidated, and/or the results of the monitoring, the analysis and/or the evaluation to the user (2), to an infrastructure participant (8), such as. B. to a charging station operator, to a vehicle manufacturer, to a vehicle swarm provider, to a service station for vehicles and / or charging stations and / or to other vehicles, and / or depending on the monitoring, the analysis and / or the evaluation at least one of the following pieces of information is output to the vehicle (1), to the user (2) of the vehicle (1) and/or to the charging station (3): - a recommendation for improved charging settings, - a short-term and/or long-term recommendation for action, - a warning about an error on the side of the vehicle (1) and/or on the side of the charging station tion (3), - a service suggestion to resolve an error, - a support request, and/or - a service query. Computer program product, comprising instructions which, when the computer program product is executed by a computer, cause the computer to carry out a method according to one of the preceding claims. Control unit, comprising a computing unit and a storage unit in which a code is stored which, when at least partially executed by the computing unit, carries out a method according to one of the preceding claims. Vehicle (1) with a control unit according to the preceding claim. Charging station (3) with a control unit according to the previous one Claim 9 . Backend unit (4) with a control unit after the previous one Claim 9 .

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