Method for dynamically subscribing charging point of charging station comprising plurality of charging points for electrically drivable motor vehicle, computer program, data processing device for motor vehicle, motor vehicle, method for server, server data processing device, and server

Abstract

The invention relates to a method (100) for an electrically drivable motor vehicle (200) for dynamically subscribing a charging point (411) of a charging station (410) comprising a plurality of charging points (411) in order to charge an energy storage device (260) of the electrically drivable motor vehicle (200), the method (100) comprising: detecting (110) a state of charge (261) of the energy storage device (260); predicting (120) an arrival time (255) for charging the energy storage device (260) at the charging station (410); sending (130) a reservation request (500) comprising the time of arrival (225) to a vehicle external server (400) managing a reservation of the charging point (411); receiving (140) a subscription response (510) from the server (400), the subscription response comprising a first charging point (411a) for assigning the motor vehicle (200) to the charging station (410) in a charging time interval (256) corresponding to the arrival time (255); determining (150) a change in time of arrival (257) on the basis of predictive information (258) that can be detected on the vehicle side; sending (160) a change request (501) comprising the time-of-arrival change (257) to the server (400) in order to charge the energy storage device (260) at the charging station (410) in accordance with the time-of-arrival change (257); and receiving (170), from the server (400), a change response (511) determined in accordance with the subscription of the charging station (410).

Description

Technical Field

[0001] The present disclosure relates to a method for an electrically drivable motor vehicle for dynamically reserving a charging point of a charging station including a plurality of charging points in order to charge an energy storage device of an electrically drivable motor vehicle. The present disclosure also relates to a data processing device for a motor vehicle, the data processing device being designed to at least partially execute the method. In addition, a motor vehicle comprising the data processing device is provided. Additionally or alternatively, a computer program is provided, the computer program comprising instructions, the instructions causing the computer to at least partially execute the method when the program is executed by a computer. Additionally or alternatively, a computer-readable medium comprising instructions is provided, the instructions causing the computer to at least partially execute the method when the instructions are executed by a computer. The present disclosure also relates to a method for a server, the server managing the reservation of charging points of a charging station including a plurality of charging points in order to charge an energy storage device of an electrically drivable motor vehicle. The present disclosure also relates to a server data processing device, which is designed to at least partially execute the method. In addition, a server having a data processing device is provided. Additionally or alternatively, a computer program comprising instructions is provided, the instructions causing the computer to at least partially execute the method when the program is executed by a computer. Additionally or alternatively, a computer-readable medium comprising instructions is provided, which when executed by a computer causes the computer to at least partially perform the method. Background Art

[0002] Such a method for a motor vehicle is known from the prior art. EP3620751A2 discloses a device for route planning of an electric vehicle, the device comprising: an input interface for receiving the current state of charge of the energy storage of the electric vehicle and the planned route of the electric vehicle; a database interface for receiving charging station information including the location of the charging station; an energy planning unit for determining the expected change process of the state of charge of the energy storage based on the current state of charge of the energy storage and the planned route; a charging planning unit for selecting a charging station based on the expected change process of the state of charge, the charging station information and the planned route; and an adjustment unit for determining at least one adjusted route passing through the location of the selected charging station based on the planned route. In addition, the device may include a reservation unit. The reservation unit is used to determine the expected arrival time at the selected charging station and to reserve the selected charging station. The charging station is thus reserved. The reservation unit then sends a request and receives a confirmation or a rejection in response. Since the device is suitable for determining the expected arrival time of the selected charging station in advance, the charging station can be reserved at the desired time. Long waiting times at the selected charging station are thereby avoided.

[0003] In particular, in relatively long journeys in which the energy storage device has to be charged one or more times, it is desirable to provide a simple and flexible reservation management. In such journeys, the predicted course of the state of charge may sometimes differ significantly from the actual course of the state of charge. For example, this is because during the long journey after the prediction, situations occur that were not predicted and / or were not used as boundary conditions for the prediction, such as congestion, storms and / or driver-initiated breaks that occur after the prediction. This may result in the reservation or booking not being honored. Summary of the invention

[0004] Against the background of this prior art, the task of the present invention is to propose an improved method which is suitable for enriching the prior art. Specific embodiments of the present disclosure can solve the task of providing an improved and more flexible reservation management for charging electric vehicles at a charging point of a charging station.

[0005] This object is achieved by the features of the independent claim and the independent claim. The dependent claims contain optional developments of the disclosure.

[0006] The object is thus achieved by a method for an electrically drivable motor vehicle for dynamically reserving a charging point of a charging station comprising a plurality of charging points for charging an energy storage device of the electrically drivable motor vehicle. The method comprises: detecting a state of charge of the energy storage device; predicting an arrival time for charging the energy storage device at the charging station; sending a reservation request including the arrival time to a vehicle-external server that manages the reservation of the charging points; receiving a reservation response from the server, the reservation response including the allocation of the motor vehicle to a first charging point of the charging station in a charging time interval corresponding to the arrival time; determining a change in the arrival time based on prediction information detectable on the vehicle side; sending a change request including the arrival time change to the server in order to charge the energy storage device at the charging station based on the arrival time change; and receiving a change response determined based on the reservation of the charging station from the server.

[0007] Therefore, a charging station comprises a plurality of charging points. A vehicle can be charged at each of said charging points, provided that the respective charging point has not yet been used and / or reserved by another vehicle. The state of charge is detected in order to estimate the range of the motor vehicle and / or the duration of a future charging process.

[0008] The prediction of the arrival time at the charging station is carried out according to the prior art. In particular, a route can be determined here, on which the charging station is located and to which the motor vehicle can drive at the predicted arrival time. The arrival time is determined, for example, based on road information and / or traffic information about the route between the motor vehicle and the charging station.

[0009] A reservation request including the arrival time is sent to a vehicle-external server that manages the reservation of charging points. The server manages the reservation of charging points here and can make reservations or reservations for charging points so that the charging point can be provided for charging to the motor vehicle according to the arrival time. The motor vehicle receives a reservation response from the server as a response to the reservation request. The reservation response includes an assignment of the motor vehicle to the first charging point in a charging time interval corresponding to the arrival time. The charging time interval defines a charging duration for charging the energy storage device. Thus, if the prediction is met, the motor vehicle can be charged at the first charging point.

[0010] However, it is recognized that the actual arrival time may differ from the arrival time predicted at the outset. Therefore, the change in the arrival time is determined based on prediction information that can be detected on the vehicle side. The determination of the change in the arrival time can be completely analogous to the prediction of the arrival time. The prediction information is information that is available on the vehicle side after the arrival time is predicted, for example, by sensors, data transmission and / or user input, and that allows the prediction of the arrival time or the change in the arrival time to be updated.

[0011] In order to be able to change the previous reservation accordingly, a change request including the change in the arrival time is sent to the server. Thus, a charging point or charging pile can be booked for charging the energy storage device at the charging station according to the change in the arrival time. As a response to the change request, a change response is received from the server, which is determined according to the reservation of the charging station. This allows the prediction of a dynamic change of the arrival time (estimated time of arrival, ETA) to be taken into account.

[0012] In other words, it is proposed to provide a charging planning system and a charging planning method for a motor vehicle, which can determine the charging duration for charging an energy storage device and thus predict possible other necessary stops for charging. Based on the stops for charging, a reservation request can be sent so that a charging point is dynamically assigned to the motor vehicle according to the arrival time.

[0013] The change in the arrival time can be determined at predetermined time intervals. The change in the arrival time can thus be determined reliably and unambiguously. The time interval can be determined, for example, taking into account road sections, speed limits, the distance between the motor vehicle and the charging station and / or traffic information. Alternatively or additionally, the change in the arrival time can be determined under predetermined conditions. For example, the stopping of the motor vehicle and the subsequent continued driving of the motor vehicle can be such a condition. Between the stopping and the continued driving, a period of time passes, during which a fact relevant to the prediction of the arrival time changes.

[0014] The prediction data may include vehicle-related data, environment-related data and / or user input data. Vehicle-related data is, for example, information related to the state of the motor vehicle, such as information related to the state of charge, which may develop differently from the prediction due to the driving style and / or the loading condition of the motor vehicle. Environment-related data refers to the environment of the motor vehicle. Environment-related data, for example, characterizes traffic, lanes and / or weather. Environment-related data may be detected by sensors on the vehicle side and / or sent to the motor vehicle by an external server. User input data may, for example, include the preferences of the driver and / or the user and may include the operation of the motor vehicle. For example, user input data may correspond to the operating mode of the motor vehicle (such as environmental protection, travel, sports) and / or the driving assistance function. This enables comprehensive predictions.

[0015] The method may include: outputting change information corresponding to the change response for perception by the vehicle driver and / or user. The vehicle may have an output device for this purpose. The change response is notified to the driver and / or user. Optionally, a user input may be performed to confirm or reject the change response.

[0016] The modification response may include assigning the motor vehicle to the first charging point in a changed charging time interval corresponding to the arrival time change. In this case, even at the arrival time changed according to the arrival time change, there is a possibility to charge the energy storage device at the first charging point. Thus, for example, the charging time interval is simply postponed. Alternatively, the modification response may be assigning the motor vehicle to a second charging point different from the first charging point in the changed charging time interval. In this case, at the arrival time changed according to the arrival time change, there is no possibility to charge the energy storage device at the first charging point; but the second charging point of the charging station is available. Therefore, the reservation in the charging station is adjusted and the charging time interval is optionally postponed. Alternatively, the modification response may include a rejection. In this case, at the arrival time changed according to the arrival time change, there is no possibility to charge the energy storage device at one of the charging points of the charging station without a waiting time. The reservation is therefore canceled so that the charging point can be booked by another motor vehicle, a waiting time for charging is provided to the driver and / or user of the motor vehicle and / or a route to another charging station is provided to the driver and / or user of the motor vehicle.

[0017] Furthermore, a computer program is provided which comprises instructions which, when the program is executed by a computer, cause the computer to at least partially execute or carry out the above-described method for a motor vehicle.

[0018] The program code of the computer program may be present as any desired code, in particular as a code suitable for controlling a motor vehicle.

[0019] What was described above with respect to the method for a motor vehicle also applies analogously to the computer program and vice versa.

[0020] Furthermore, a data processing device, such as a control device, for a motor vehicle is provided, which is configured to at least partially execute or implement the above-described method for a motor vehicle. The method for a motor vehicle is therefore a computer-implemented method.

[0021] The data processing device may be an electronic control unit (ECU). The electronic controller may be an intelligent processor control unit, which may communicate with other modules, for example, via a central gateway (CGW) and may form a vehicle onboard network, for example, via a fieldbus, such as a CAN bus, a LIN bus, a MOST bus, and a FlexRay, or via automotive Ethernet, for example, together with a telematics controller. It is conceivable that a controller for functions related to the driving behavior of a motor vehicle, such as, in particular, a motor control device, controls power transmission and / or regulates a charging process.

[0022] What has been described above with respect to the method and the computer program for a motor vehicle also applies analogously to the data processing device and vice versa.

[0023] Furthermore, a motor vehicle comprising the above-mentioned data processing device is provided.

[0024] The motor vehicle can be a passenger car, in particular a car. The optional automated motor vehicle can be an electrically drivable motor vehicle. For this purpose, the motor vehicle can include an electric drive device, which can be driven by electrical energy provided by the energy storage device.

[0025] What has been described above with regard to the method, the data processing device and the computer program for a motor vehicle also applies analogously to the motor vehicle and vice versa.

[0026] Furthermore, a computer-readable medium, in particular a computer-readable storage medium, is provided. The computer-readable medium comprises instructions which, when the program is executed by a computer, cause the computer to at least partially carry out the above-described method for a motor vehicle.

[0027] That is, a computer readable medium including the computer program defined above may be provided. The computer readable medium may be any digital data storage device, such as a USB flash drive, a hard disk, an optical disk, an SD card or an SSD card. The computer program does not have to be stored on such a computer readable storage medium to be provided to the motor vehicle, but may also be obtained via the Internet or other external channels.

[0028] What was described above with respect to the method, the data processing device, the computer program and the motor vehicle also applies analogously to the computer-readable medium and vice versa.

[0029] Furthermore, a method for a server is provided, which manages the reservation of charging points of a charging station comprising a plurality of charging points for charging an energy storage device of an electrically drivable motor vehicle. The method comprises: receiving a reservation request including an arrival time from the electrically drivable motor vehicle, the arrival time being the arrival time predicted on the vehicle side; sending a reservation response including an allocation of the motor vehicle to a first charging point of the charging station in a charging time interval corresponding to the arrival time; receiving a modification request including a change of the arrival time in order to charge the energy storage device at the charging station according to the change of the arrival time; determining a modification response according to the reservation of the charging station; and sending the modification response to the motor vehicle.

[0030] Furthermore, a computer program is provided which comprises instructions which, when the program is executed by a computer, cause the computer to at least partially perform or implement the above-described method for a server.

[0031] The program code of the computer program may be present as any desired code, in particular as a code suitable for controlling a motor vehicle.

[0032] What was described above with respect to the method for the server also applies analogously to the computer program and vice versa.

[0033] Furthermore, a server data processing device is provided, which is configured to at least partially execute or implement the above method for a server. Therefore, the method for a server is a computer-implemented method.

[0034] What has been described above with regard to the method and the computer program for a server also applies analogously to the server data processing device and vice versa.

[0035] In addition, a server including the above-mentioned server data processing device is provided.

[0036] What has been described above with regard to the method for a server, the server data processing device and the computer program also applies analogously to the server and vice versa.

[0037] The server may be a server that manages the booking of multiple charging stations. The server is thus a central server. The server may manage the booking of charging stations and / or charging points of multiple manufacturers and / or providers.

[0038] Alternatively or additionally, the server may be a server that manages the booking of multiple charging points of a charging station. Thus, the booking may be managed locally. The server may be connected and / or connectable to other servers of other charging stations to exchange booking information.

[0039] Alternatively or additionally, the server may be a server that manages the reservations for a charging point of a charging station. The server may be implemented directly in the charging point or charging pile. Thus, the server may be simply installed. The server may be connected and / or connectable to other servers of other charging points and / or charging stations to exchange reservation information.

[0040] Furthermore, a computer-readable medium, in particular a computer-readable storage medium, is provided. The computer-readable medium comprises instructions, which, when the program is executed by a computer, cause the computer to at least partially perform the above method for a server.

[0041] That is, a computer readable medium including the computer program defined above may be provided. The computer readable medium may be any digital data storage device, such as a USB flash drive, a hard disk, an optical disk, an SD card or an SSD card. The computer program does not have to be stored on such a computer readable storage medium to be provided to the motor vehicle, but may also be obtained via the Internet or other external channels.

[0042] What was described above with respect to the method for a server, the server data processing device, the computer program and the server also applies analogously to the computer-readable medium and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Refer to the following Figures 1 to 5 An implementation method is described. The accompanying drawings are as follows:

[0044] Figure 1 Schematically illustrates an overview of a motor vehicle according to one aspect of the present disclosure;

[0045] Figure 2 Schematically illustrating a charge state prediction of a motor vehicle according to one aspect of the present disclosure;

[0046] Figure 3 Schematically illustrating a dynamic reservation of a charging point by a motor vehicle according to one aspect of the present disclosure;

[0047] Figure 4 The sequence of a method for a motor vehicle is schematically shown;

[0048] Figure 5 Schematically illustrates the flow of the method for a server;

[0049] Figure 6 schematically illustrating a reservation of a charging station; and

[0050] Figure 7 An input request is schematically shown. DETAILED DESCRIPTION

[0051] Figure 1The schematic diagram shows an overview of a motor vehicle 200 according to one aspect of the present disclosure. Figure 1 Also shown are a server 400 and a charging station 410 having a plurality of charging points 411 .

[0052] Motor vehicle 200 is an electrically drivable motor vehicle 200 and has a rechargeable energy storage device 260 for storing and providing electrical energy. Energy storage device 260 can be recharged in particular at a charging station 410 .

[0053] The motor vehicle 200 has a data processing device 250 which is configured to execute a data processing operation according to Figure 4 To this end, according to the method 100, Figure 1 The data processing device 250 is configured to detect a charge state 261 of an energy storage device 260 .

[0054] The data processing device 250 is also configured to detect prediction information 258. The prediction data 258 includes vehicle-related data, environment-related data, and user input data. For this purpose, the motor vehicle 200 has a sensor device connected to the data processing device 250, a communication device for wireless communication, and an input device. The sensor device is configured to detect information about the motor vehicle 200, the environment, and / or the user and / or driver of the motor vehicle. For example, the sensor device can have one or more cameras for this purpose. The communication device is configured to receive data about the motor vehicle 200 and / or the environment. For example, information about congestion, traffic, and / or weather can be transmitted to the motor vehicle 200. The input device is used to input information by the driver and / or user. For example, information about driving mode and / or route planning can be input here.

[0055] The data processing device 250 is configured to predict the arrival time 255 for charging the energy storage device 260 at the charging station 410 based on the prediction information 258 and then send a reservation request 500 including the arrival time 225 to the vehicle-external server 400 that manages the reservation of the charging point 411. The reservation request 500 and the subsequent allocation of the motor vehicle 200 to one of the charging points 411 can take into account user input and / or presets about preferences. The reservation request 500 can include dynamic data and static data. The static data is fixedly defined during the journey with the motor vehicle 200 and includes, for example, information about the vehicle, the compatibility of the vehicle with the charging point 411, the capacity of the energy storage device 260 and / or the payment method. The dynamic data can change during the journey with the motor vehicle 200 and include, for example, the predicted state of charge when arriving at the charging point to determine the charging duration.

[0056] The server 400 checks the possibility of charging the motor vehicle 200 at the charging station 410 and sends a reservation response 510, which includes an assignment of the motor vehicle 200 to the first charging point 411a of the charging station 410 in the charging time interval 256 corresponding to the arrival time 255. The reservation response 510 is received by the motor vehicle 510. The charging time interval 256 may be sent from the server 400 to the charging station 410 and / or the first charging point 411a.

[0057] Data processing device 250 is configured to execute arrival time change 257 based on prediction information 258. For this purpose, a new prediction is made similar to arrival time 255. Data processing device 250 then sends a change request 501 including arrival time change 257 to server 400 in order to charge energy storage device 260 at charging station 410 based on arrival time change 257.

[0058] Arrival time 257 is calculated continuously or regularly. For example, when arrival time variation 257 exceeds 2 minutes in value, a change request 501 based thereon can be sent from motor vehicle 200 to server 400 at regular time intervals and / or under predetermined conditions. Additionally or alternatively, when approaching charging station 400 geographically and / or temporally, change request 501 can be sent from motor vehicle 200 to server 400 more frequently.

[0059] The server 400 checks the possibility of charging the motor vehicle 200 at the charging station 410 and sends a modification response 511. The modification response 511 is received by the motor vehicle 510. The possibly variable charging time interval 259 can be sent by the server 400 to the motor vehicle 200, the charging station 410 and / or one of the plurality of charging points 411. For various possible scenarios for the modification response 511, refer to Figure 3 Give a description.

[0060] The data processing device 250 is configured to output a modification information 512 corresponding to the modification response 511 for perception by the driver and / or user of the motor vehicle 200. For this purpose, the motor vehicle 200 has an output device, not shown, such as a display for visual output and / or a loudspeaker for acoustic output. Optionally, the user and / or driver can make an input 513 based on the modification information 512 to accept or reject the modification. The modification information 512 can be output by means of an input request 514 (see Figure 7 ). The input request 514 may include a confirmation 515 of the waiting time and / or a request to find another charging station 410 on the route. The change information 512 may include a charging point 411, such as "Charging point 3". Optionally, in particular when approaching a charging station 410, the server 400 may cause the display of reservation information at the charging point 411, such as information about the user's name and / or the logo of the motor vehicle 200.

[0061] The communication between motor vehicle 200 and server 400 can take place, for example, via a mobile radio network (4G, 5G) and / or a local wireless network (WLAN).

[0062] The server 400 has a server data processing device 450 for managing the reservation of charging points 411 of a charging station 410 including a plurality of charging points 411 in order to charge the energy storage device 260 of the electrically drivable motor vehicle 200. The server 400 can be a central server 400, i.e. a server 400 that manages the reservation of a plurality of charging stations 410. Thus, for example, the reservation can be managed across manufacturers and / or service providers. The server 400 can be a partial central server 400, i.e. a server 400 that manages the reservation of a plurality of charging points 411 of a charging station 410. Thus, the reservation of the charging station 410 can be effectively managed locally. In this case, the server 400 can be connected and / or connectable to other servers 400 of other charging stations 410 in order to exchange reservation information. The server 400 can be a decentralized server 400, i.e. a server 400 that manages the reservation of a charging point 411 of a charging station 410. For example, the server 400 can then be directly arranged in the corresponding charging point 411 or charging pile. The reservations for the respective charging point 411 can thus be managed locally in an efficient manner. In this case, the server 400 can be connected and / or connectable to other servers 400 of other charging points 411 and / or other charging stations 410 in order to exchange reservation information. The server data processing device 450 is configured to execute the reservation according to Figure 5 The steps of method 300 are as follows.

[0063] Figure 2 The charge state prediction of a motor vehicle 200 according to one aspect of the present disclosure is schematically shown. Figure 2 (A) and Figure 2 (B) shows a scenario in which a charge state 261 of an energy storage device 260 of a motor vehicle 200 is predicted based on a road section 265 to be traveled. Figure 1 Described in Figure 2 Reference in the description Figure 1 .

[0064] exist Figure 2 (A) and Figure 2(B) A curve is shown in the respective upper part of the figure, which shows the state of charge 261 as a function of a route section 265. In this case, the motor vehicle 200 is located at a point on the route section 265, which is indicated by a vertically arranged dashed line. The state of charge 261 at this point can be measured on the vehicle side. The state of charge 261 is then predicted. In order to reach the destination on the route 265, which is indicated by the end flag, the energy storage device 260 must be charged along the route section 265.

[0065] To this end, the motor vehicle 200 is Figure 2 (A) A reservation request 500 is sent to a server 400 that manages reservations for one of a plurality of charging stations 410 disposed along road section 265 . Vehicle 200 is charged at charging station 410 , state of charge 261 increases during charging, and vehicle 200 can continue to travel along road section 265 .

[0066] according to Figure 2 (B), the motor vehicle 200 must be charged at two charging stations 410. To this end, the motor vehicle 200 sends a reservation request 500 to the corresponding server 400, which manages the reservation of one of the multiple charging stations 410 arranged along the road section 265. The motor vehicle 200 is charged at the charging station 410, the state of charge 261 is increased during charging, and the motor vehicle 200 can continue to travel along the road section 265.

[0067] However, it may happen that the prediction may not be fulfilled and the reservation corresponding to reservation request 500 for one of charging stations 410 may not be fulfilled. Figure 1 and 3 Dynamic reservation as described in 5, which takes into account the changes in arrival time 255.

[0068] Figure 3 The schematic diagram shows a dynamic reservation of charging points 411, 411a, 411b by a motor vehicle 200 according to one aspect of the present disclosure. Figure 3 (A) to 3 (D) each show a scenario for assigning a motor vehicle 200 to one of the charging points 411, 411a, 411b of a charging station 410. Such a motor vehicle 200 is already Figure 1 Described in Figure 3 Reference in the description Figure 1 and 2 and its description.

[0069] Here Figure 3 (A) to Figure 3Each of (D) shows the occupancy of charging points 411 of charging station 410. Charging points 411 are plotted row by row and in each row the occupancy of the respective charging point 411 assigned to the respective charging point 411 and represented by a dashed rectangle is shown. The arrangement and size of these rectangles here indicate the time and duration that the respective charging point 411 is occupied by another motor vehicle 200 and is not available for reservation.

[0070] according to Figure 3 (A), the vehicle 200 sends a reservation request 500 to the server 400. The server 400 reserves a charging time interval 256 at the first charging point 411a of the charging station 410 according to the predicted arrival time 255. The charging time interval 256 is defined by a start time and an end time and / or by one of these two times and a charging duration.

[0071] However, arrival time 255 may change. Motor vehicle 200 determines arrival time change 257 and uses Figure 3 (B) to 3 (D) send a change request 510 to the server 400 .

[0072] according to Figure 3 (B), the server 400 reserves a modified charging time interval 258 at the first charging point 411a of the charging station 410 according to the arrival time change 257. It has been determined here that it is sufficient to postpone the reservation of the first charging point 411a according to the modified charging time interval 258 requested by the motor vehicle 200 according to the state of charge 261 and the road section 265. Optionally, the modified charging time interval 258 can be shortened relative to the initial charging time interval 256 in order to fully enable charging.

[0073] according to Figure 3 (C) and 3 (D), the server 400 reserves a modified charging time interval 258 at a second charging point 411b of the charging station 410 that is different from the first charging point 411a according to the arrival time change 257. It has been determined that it is sufficient to move the reservation in the charging station 410 to the second charging point 411b according to the modified charging time interval 258 requested by the motor vehicle 200 according to the state of charge 261 and the road section 265. Optionally, the modified charging time interval 258 can be shortened relative to the initial charging time interval 256 in order to fully enable charging.

[0074] If motor vehicle 200 is charged at one of charging points 411 , information about the charging, such as the remaining charging time, may be output at charging point 411 via an output device of charging point 411 .

[0075] Figure 4The flow of a method 100 for a motor vehicle 200 is schematically shown. The method 100 is a method 100 for an electrically drivable motor vehicle 200 for dynamically reserving a charging point 411 of a charging station 410 comprising a plurality of charging points 411 in order to charge an energy storage device 260 of the electrically drivable motor vehicle 200. Such a motor vehicle 200 is referred to Figure 1 Described. Figures 1 to 3 and its description to illustrate Figure 4 .

[0076] Method 100 includes detecting 110 a state of charge 261 of an energy storage device 260 .

[0077] Arrival time 255 for charging energy storage device 260 at charging station 410 is predicted 120 .

[0078] The reservation request 500 including the arrival time 225 is sent 130 to the vehicle external server 400 which manages reservations of the charging point 411 .

[0079] A reservation response 510 is received 140 from server 400 , which comprises an assignment of motor vehicle 200 to first charging point 411 a of charging station 410 in charging time interval 256 corresponding to arrival time 255 .

[0080] The arrival time variation 257 is determined 150 based on prediction information 258 detectable on the vehicle side. The determination 150 of the arrival time variation 257 is performed at predetermined time intervals and / or under predetermined conditions. The prediction data 258 includes vehicle-related data, environment-related data and / or user input data.

[0081] A modification request 501 including arrival time change 257 is sent 160 to server 400 in order to charge energy storage device 260 at charging station 410 according to arrival time change 257 .

[0082] A change response 511 determined according to the reservation of the charging station 410 is received 170 from the server 400 .

[0083] Change information 512 corresponding to change response 511 is output 175 for perception by the driver and / or user of motor vehicle 200. Change response 511 includes assigning motor vehicle 200 to first charging point 411a in changed charging time interval 258 corresponding to arrival time change 257, assigning motor vehicle 200 to second charging point 411b different from first charging point 411a in said changed charging time interval 258, or rejection.

[0084] Figure 5The flow of a method 300 for a server 400 is schematically shown. The method 300 is a method 300 for a server 400 that manages the reservation of charging points 411 of a charging station 410 including a plurality of charging points 411 in order to charge an energy storage device 260 of an electrically drivable motor vehicle 200. Such a server 400 is referred to as Figure 1 Described. Figures 1 to 4 and its description to illustrate Figure 5 .

[0085] The method 300 includes receiving 310 a reservation request 500 from an electrically drivable motor vehicle 200 , which includes an arrival time 255 , which is a predicted arrival time 255 on the vehicle side.

[0086] Reservation response 510 is sent 320 , which includes an assignment of motor vehicle 200 to first charging point 411 of charging station 410 in charging time interval 256 corresponding to arrival time 255 .

[0087] Modification request 501 including arrival time change 257 is received 330 in order to charge energy storage device 260 at charging station 410 according to arrival time change 257 .

[0088] Change response 511 is determined 340 based on the reservation of charging station 410 .

[0089] A change response 511 is sent 350 to the motor vehicle 200 .

[0090] Figure 6 The reservation of a charging station 410 with two charging points 411 is schematically shown. Figure 3 illustrate Figure 6 .

[0091] Figure 6 It is shown that a buffer zone 249 can be planned and / or reserved when booking a charging time interval 256 and / or a variable charging time interval 259. Buffer zone 249 can be several minutes, in particular 5 minutes, for example. This makes it possible that at the beginning of charging time interval 256 and / or variable charging time interval 259, the vehicle that was previously charged may have already left charging point 411 and motor vehicle 200 can be charged immediately.

[0092] Figure 7 Schematically illustrated is an input request 514. The input request 514 comprises a confirmation 515 of the waiting time and a request 516 to find another charging station 410 on the route. Reference numerals list

[0093] 100 Methods for use with motor vehicles

[0094] 110 detection

[0095] 120 Predictions

[0096] 130Send booking request

[0097] 140 Receive booking response

[0098] 150 OK

[0099] 160 Send Change Request

[0100] 170 Receive Change Response

[0101] 175 output

[0102] 200 Motor Vehicles

[0103] 249 Time Buffer

[0104] 250 Data processing device

[0105] 255 Arrival Time

[0106] 256 charging intervals

[0107] 257 Arrival Time Change

[0108] 258 Forecast Information

[0109] 259 Variable charging interval

[0110] 200 Motor Vehicles

[0111] 260 Energy storage device

[0112] 261 State of Charge

[0113] Section 265

[0114] 300 for server methods

[0115] 310 Receiving booking request

[0116] 320 Send Booking Response

[0117] 330 Receive Change Request

[0118] 340 OK

[0119] 350 Send Change Response

[0120] 400 Server

[0121] 410 Charging Station

[0122] 411 Charging Point

[0123] 411a First Charging Point

[0124] 450 server data processing device

[0125] 500 Booking Request

[0126] 501 Change Request

[0127] 510 Reserved Response

[0128] 511 Changed Response

[0129] 512 Change Information

[0130] 513 Input

[0131] 514 Input Request

[0132] 515 Confirmation

[0133] 516 Requests

Claims

1. A method (100) for an electrically drivable motor vehicle (200) for dynamically reserving a charging point (411) of a charging station (410) comprising a plurality of charging points (411) for charging an energy storage device (260) of the electrically drivable motor vehicle (200), wherein: The method (100) comprises: - detecting (110) a state of charge (261) of an energy storage device (260); - predicting (120) an arrival time (255) for charging an energy storage device (260) at a charging station (410); - sending ( 130 ) a reservation request ( 500 ) including an arrival time ( 225 ) to a server ( 400 ) external to the vehicle that manages reservations of charging points ( 411 ); - receiving (140) a reservation response (510) from the server (400), the reservation response comprising an assignment of the motor vehicle (200) to a first charging point (411a) of the charging station (410) in a charging time interval (256) corresponding to the arrival time (255); - determining (150) a change in the arrival time (257) based on prediction information (258) detectable at the vehicle side; - sending (160) a change request (501) including the arrival time change (257) to the server (400) in order to charge the energy storage device (260) at the charging station (410) according to the arrival time change (257); and - Receiving (170) from the server (400) a change response (511) determined according to the reservation of the charging station (410).

2. The method according to claim 1, wherein: The determination (150) of the arrival time variation (257) is performed at predetermined time intervals and / or under predetermined conditions.

3. The method according to claim 1 or 2, wherein: The prediction data (258) includes vehicle-related data, environment-related data and / or user input data.

4. A method according to any one of the preceding claims, wherein: The method (100) comprises: - outputting (175) change information (512) corresponding to the change response (511) for perception by a driver and / or user of the motor vehicle (200).

5. A method according to any one of the preceding claims, wherein: The modification response (511) includes assigning the motor vehicle (200) to a first charging point (411a) in a changed charging time interval (258) corresponding to the arrival time change (257), assigning the motor vehicle (200) to a second charging point (411b) different from the first charging point (411a) in the changed charging time interval (258), or rejection.

6. A computer program and / or a computer readable medium comprising instructions which, when the program or instructions are executed by a computer, cause the computer to perform the method (100) and / or the steps of the method (100) according to any one of claims 1 to 5.

7. A data processing device (250) for a motor vehicle (200), wherein: The data processing device (250) is configured to carry out the method (100) according to any one of claims 1 to 5.

8. A motor vehicle (200) comprising a data processing device (250) according to claim 7.

9. A method for a server (400) for managing the reservation of charging points (411) of a charging station (410) comprising a plurality of charging points (411) for charging an energy storage device (260) of an electrically drivable motor vehicle (200), wherein: The method (300) comprises: - receiving (310) a reservation request (500) from an electrically drivable motor vehicle (200) including an arrival time (255), the arrival time (255) being a predicted arrival time (255) on the vehicle side; - sending (320) a reservation response (510) comprising an assignment of the motor vehicle (200) to a first charging point (411) of the charging station (410) in a charging time interval (256) corresponding to the arrival time (255); - receiving (330) a change request (501) comprising an arrival time change (257) in order to charge the energy storage device (260) at the charging station (410) according to the arrival time change (257); - determining (340) a change response (511) based on the reservation of the charging station (410); and - Sending (350) a change response (511) to the vehicle (200).

10. A server data processing device (450) for a server (400), wherein: The server data processing device (450) is configured to execute the method (300) as claimed in claim 9.

11. A server (400) comprising the server data processing device (450) according to claim 10.

12. The server according to claim 11, wherein: The server (400) is a server (400) that manages reservations for a plurality of charging stations (410), a server (400) that manages reservations for a plurality of charging points (411) of one charging station (410), and / or a server (400) that manages reservations for a charging point (411) of one charging station (410).

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