Method and device for range control of a motor vehicle having an internal combustion drive or an additional electric drive

Abstract

The invention relates to a method and a device (10) for range control of a motor vehicle (100) having an internal combustion drive or having an additional electric drive. The method comprises: obtaining a navigation destination; determining a range on the basis of a fuel quantity or a state of charge. Here, a refueling intermediate stop or a charging intermediate stop is determined automatically in order to determine a navigation route to the navigation destination via one or more refueling intermediate stops and / or charging intermediate stops.

Description

TECHNICAL FIELD

[0001] The present application relates to a method and a device for range control of a motor vehicle having an internal combustion drive or of a motor vehicle having an additional electric drive. Furthermore, a motor vehicle having such a device is described. BACKGROUND

[0002] The problem arises with every longer journey of a motor vehicle that the driver has to plan intermediate stops because the range of the motor vehicle is limited. This problem occurs in particular in the case of battery-operated motor vehicles because the range is currently still significantly smaller and the network of charging stations has a small density.

[0003] For purely battery-operated motor vehicles having electric motors, there are a number of range control systems or range management systems which are usually integrated in a navigation system in which a navigation route to a navigation destination can be determined via charging stations. This information can be transmitted to the driver via a graphical driving route display with graphical symbols so that the driver is guided past charging stations as intermediate stops and is informed about them. Furthermore, a setting possibility is known via which the user can activate or deactivate the automatic planning of charging stations. In the case of a long distance to the navigation destination, it is also possible to plan several charging stations in the case of a battery-operated motor vehicle.

[0004] Furthermore, information such as the current state of charge can be displayed on such a driving route display. It is also known to provide a warning display for a battery-operated vehicle if the navigation destination lies outside the range and no charging station can be found or the above-mentioned charging station search is deactivated.

[0005] A method for displaying the range of a motor vehicle having a battery is described in DE 10 2019 204 217 A1. Here, in the method, a minimum and a maximum range are determined on the basis of the state of charge of the battery and are visualized in a graphical presentation. Here, a variable, graphical range object is generated which extends from a vehicle object in the direction of a destination object, wherein the graphical range object comprises at least a first section representing a region of the minimum range which extends from the vehicle object up to the range object, and a second section which extends from the first section up to an end of the range object representing the maximum range.

[0006] However, for conventional motor vehicles with a fuel tank and for hybrid motor vehicles, in particular plug-in hybrid vehicles, a range problem also arises. In such cases, the driver or user must also take into account the limited range and adapt his navigation route to the intermediate stops. However, a similar range management for the two vehicle types mentioned has not been known to date.

[0007] In the case of motor vehicles with only an internal combustion drive, the user is provided with a display to date which only displays a filling station object as a road sign next to the navigation route, so that the driver can be informed that a filling station exists in a certain surrounding environment of the determined navigation route and in principle can find the filling station.

[0008] In the case of hybrid motor vehicles, the problem additionally arises that the battery share in operation is too low on average, that is to say that the hybrid motor vehicle in practice travels electrically too little. SUMMARY

[0009] The invention is now based on the task of providing a range management for motor vehicles with an internal combustion drive or an additional electric drive, which range management is in particular suitable for making the range control easy for the driver, increasing the electric travel share and conveying information to the driver or user in an intuitive and comprehensible manner for operating the motor vehicle.

[0010] In a preferred design of the invention, a method for range control of a motor vehicle with an internal combustion drive is provided. In one step of the method, a navigation destination is acquired. In a further step, a first range is determined on the basis of the fuel quantity in the fuel tank for the internal combustion drive. In a further step, a determination of at least one refueling intermediate stop is made on the basis of the first range and the distance to the navigation destination. In a further step, a first navigation route to the navigation destination is determined via the determined at least one refueling intermediate stop.

[0011] The range control is in other words a range management. The fuel can be for example diesel, gasoline or hydrogen, wherein the application is not limited thereto. Correspondingly, the fuel tank can be a tank for diesel, gasoline or hydrogen. Such a motor vehicle is in other words thus a combustion engine vehicle or a hybrid vehicle, in particular a mild hybrid vehicle (MHEV). The determination of the range can in addition for example be based on the fuel consumption in order to obtain a current and precise value. The range is thus also adaptable, that is to say in particular the range can be recalculated in the event of a change in consumption. The determination of the filling stations can here be based on the brand and / or on the fuel prices. In other cases, the determination of the filling stations can also be based on the catering possibilities, for example the eating possibilities, at the filling stations. Preferably, the determination of the filling stopovers can only be made if the first range is less than the route to the navigation destination. The filling stopovers are thus only taken into account if the route is longer than the range. Only then is a navigation route via the filling stopovers required. However, the remaining range can also be requested. It is expressly stated here and in the following that the determined navigation route generally changes in the event of the inclusion of the stopovers. The navigation route can here and in further embodiments be determined anew in time succession or over a certain period of time.

[0012] The application provides an automatic inclusion of filling stations for motor vehicles having combustion engines and thus an integrated range control in the determination of the navigation route. Here, a plurality of filling stopovers can also be included, for example in the event of a long route. A multi-stopover route planning for motor vehicles having combustion engines is thus achieved. The user does not have to plan the filling stopovers himself in advance.

[0013] Further preferred embodiments of the application result from the remaining features mentioned in the dependent claims.

[0014] In a preferred embodiment, the motor vehicle also comprises an electric drive. The motor vehicle can thus be a plug-in hybrid vehicle. In particular, a multi-stopover route planning is advantageous for such a motor vehicle.

[0015] Preferably, the method comprises determining a first navigation route to the navigation destination via only the determined at least one filling stopover. In this regard and in similar cases, "only" means that a filling stopover is used but no charging stopover. A purely fuel-based multi-stopover route planning is thus provided. This is in particular important for motor vehicles having only a combustion drive, but can also be applied to plug-in hybrid vehicles as a set option. Such a navigation route is particularly fast and thus time-efficient. Such an operating mode in which only filling stopovers are included can also be implemented in response to an acquisition by a user's setting.

[0016] In a preferred embodiment of the application, the method comprises determining a second range based on the state of charge of the battery of the electric drive device, and determining at least one charging intermediate stop based on the second range and the distance to the navigation destination. Preferably, the determination of the charging station can only be made if the second range is smaller than the distance to the navigation destination. Furthermore, a remaining range can be required. For example, the determination of the second range can furthermore be made based on the battery consumption in order to obtain a current and precise value. Thus, the range is also adaptable, that is to say, in particular, the second range can also be recalculated in the event of a change in consumption. In other words, the charging station is a charging column. By automatically determining the charging intermediate stop, the electric driving share of the plug-in hybrid vehicle can be increased.

[0017] Preferably, the method comprises determining a first navigation route to the navigation destination via the determined at least one refueling intermediate stop and furthermore via the determined at least one charging intermediate stop. Thereby, the user is provided with a hybrid navigation route with refueling stations and charging stations. Thus, the new navigation route calculated includes charging stations and refueling stations. Thereby, the plug-in hybrid vehicle can be provided with a driving with an automatic charging of the battery at all times. Thereby, an ecological operation with a high electric share can be achieved.

[0018] In a preferred embodiment of the application, the method comprises determining a first navigation route via the determined at least one refueling intermediate stop and charging intermediate stop, such that the charging intermediate stop is the last intermediate stop of the first navigation route before the navigation destination. With this calculation of the navigation route, it is ensured that the battery is charged again before arrival, that is to say, for example, in the vicinity of the home address or the input navigation destination. Thereby, the electric share of the plug-in hybrid vehicle can be increased for the subsequent driving, for example, for short trips.

[0019] Preferably, the method further comprises acquiring a user input indicating a selection of a refueling intermediate stop or a charging intermediate stop as the next intermediate stop, and determining a first navigation route via the determined at least one refueling intermediate stop and the acquired refueling intermediate stop or charging intermediate stop as the next intermediate stop. Thereby, the user can actively and optionally intervene in the calculation of the navigation route according to his judgment. In the case of a selection of the next charging intermediate stop, the electric driving share can also be increased here by recalculating the route via the next charging intermediate stop.

[0020] Furthermore, the method comprises presenting a graphical first driving range display on a display, the graphical first driving range display having a graphical vehicle object and a graphical destination object and at least one graphical refueling station object indicating the determined refueling stopover on a graphical path between the graphical vehicle object and the graphical destination object. In other words, the display is a graphical display device. For example, the driving range display can be presented in the form of a graphical bar, in particular a linear bar, having a linear graphical path presented thereon. The graphical path does not necessarily have to be marked, but can also be derived from the arrangement of the objects. Such a driving range display can be presented on a display of a device, in particular a navigation device, next to a graphical map or navigation map. The presented objects indicate the vehicle, the navigation destination, the refueling stopover, etc., respectively. The presentation can preferably be to scale. The driving range display furthermore enables to communicate these information to the driver in a clear manner, so that the user can be informed about the time and distance of the refueling stopover. Such a display improves the perception of the driving range guidance during driving for the driver of a motor vehicle having an internal combustion engine. In a further embodiment of the present invention, a charging station object indicating one or more determined charging stations on the graphical path can also be presented.

[0021] In a preferred embodiment, the method comprises determining a second navigation route to the navigation destination via the determined at least one charging stopover or only via the determined at least one charging stopover. Thereby, the driver of the plug-in hybrid vehicle is always provided or calculated with a navigation route which can be operated electrically to a higher share. Thereby, the electrical share of the plug-in hybrid vehicle can be effectively increased when using such an eco-route. In this regard and in similar cases, "only" means that a charging stopover is used but no refueling stopover. Thus, in an alternative, a navigation route can be provided which is purely based on an electric drive device. Thus, the hybrid vehicle can be operated in an electrical mode on such a route.

[0022] Preferably, the method comprises displaying only one of the first and second travel range display corresponding to the selected navigation route in response to obtaining a selection of a navigation route from the first and second navigation route by the user, wherein the graphical second travel range display comprises at least one graphical charging station object indicating a charging intermediate stop on the graphical path between the graphical destination object and the vehicle object. Thus, the driver or user can switch from navigation route to navigation route and here always views the appropriate travel range display. Thus, either the first travel range display or the second travel range display is presented. Furthermore, the information displayed to the user is dosed here, so that only information relevant to the selected route is conveyed to the user. Advantageously, the map view can also be switched automatically in this case on the basis of the navigation route selection. Thus, the driver can switch between a time-efficient route and an ecological route.

[0023] In a preferred embodiment of the application, the method comprises presenting the first and second travel range display jointly, wherein the graphical second travel range display comprises at least one graphical charging station object indicating a charging intermediate stop on the graphical path between the graphical destination object and the vehicle object. Thereby, the driver / user is provided with the possibility to compare the two calculated routes with each other. In particular, it is thus possible to select or switch the navigation route on the basis of the information of the travel range display. For example, the driver can opt for a good navigation route with charging stations, i.e. a route with charging stations that is only slightly slower, in order to increase the electrical share in operation.

[0024] Preferably, the method furthermore comprises displaying only a map view corresponding to the selected navigation route on the display in response to obtaining a selection of a navigation route from the first and second navigation route by the user. Thereby, although two travel range displays are displayed, only a map view corresponding to the selected navigation route can be displayed. Thereby, an adapted map is always displayed, but also the possibility of switching to the other navigation route is implemented. Thus, the method is intuitive and flexible.

[0025] In a preferred embodiment of the application, the method comprises activating the marking of the group of the first and second marking fields, which is positioned on or attributed to the selected travel range display. By means of the marking, it is ensured that the user always knows which of the two displayed navigation routes is displayed on the map.

[0026] Preferably, the method comprises determining the driving time to the navigation destination based on the pure driving time and the refueling time and / or the charging time at the at least one refueling intermediate stop and / or at the at least one charging intermediate stop, and presenting the driving time next to or on the first driving route display and / or the second driving route display. Thereby, for each route the absolute driving time can be stated, which also contains the loss time when refueling / charging. This information can be especially helpful when selecting a navigation route.

[0027] In a preferred embodiment, the method comprises determining the refueling time and / or the charging time based on the occupancy of the refueling station and / or the charging station or by providing a preset time constant. For example, the time constant when refueling can be 10 minutes. In the case of a charging column, other (e.g. longer) time constants can be chosen. For example, the real refueling time or the real charging time can be determined by the obtained information about the occupancy. Thereby, the user can be put in a better position to make a decision, especially when selecting a navigation route. Furthermore, the expected arrival time can be better planned.

[0028] In another aspect of the application, a device for range control of a motor vehicle having an internal combustion drive is provided, wherein the device is set up to carry out the method according to one of the above embodiments. The device is preferably a navigation device. In particular, the navigation device here has a control unit in order to carry out the individual steps of the method according to the application.

[0029] Furthermore, a motor vehicle having an internal combustion drive is described, which comprises a device for range control according to one of the embodiments according to the application.

[0030] The different embodiments of the application mentioned in this application can advantageously be combined with each other, as far as not stated otherwise in the individual case. BRIEF DESCRIPTION OF DRAWINGS

[0031] The application is explained below in the examples in accordance with the drawings. Therein:

[0032] Figure 1 A motor vehicle and a device for range control according to one embodiment of the application are shown;

[0033] Figure 2 A diagram of the method for range control according to the first embodiment of the application is shown;

[0034] Figure 3 A diagram of the method for range control according to the second embodiment of the application is shown;

[0035] Figure 4A diagram showing a method for performing a range control according to a third embodiment of the application is shown;

[0036] Figure 5 A diagram showing a method for performing a range control according to a fourth embodiment of the application is shown;

[0037] Figure 6 A diagram showing a method for performing a range control according to a fifth embodiment of the application is shown; and

[0038] Figure 7 A diagram showing a method for performing a range control according to a sixth embodiment of the application is shown. DETAILED DESCRIPTION

[0039] Figure 1 A motor vehicle 100 and a device 10 for performing a range control are shown. The device 10 for performing a range control is here exemplarily provided, preferably integrated, in the motor vehicle 100. The motor vehicle 100 comprises an internal combustion drive. Furthermore, a fuel tank 110 is provided for use by the internal combustion drive. Furthermore, an internal combustion engine 115 or combustion engine can be provided. These components are only schematically described in Figure 1 The fuel tank 110 can here be designed for hydrogen, gasoline, diesel, natural gas or other fuels. In the first embodiment, the motor vehicle 100 can thus be a pure combustion vehicle without an additional electric drive.

[0040] In further embodiments, the motor vehicle 100 can additionally comprise an electric drive as depicted. For this, a battery 120 can be provided for the electric drive. Furthermore, an electric motor 125 or electric machine is schematically provided. In a preferred embodiment, this battery 120 can be charged via a charging station as further described below. The motor vehicle 100 can thus be a plug-in hybrid vehicle. In other embodiments, the motor vehicle 100 can be a mild hybrid vehicle.

[0041] The motor vehicle further comprises a sensor 11, 12 or a sensor group or sensor arrangement in order to determine the range of the motor vehicle. For example, a first sensor 11 can be set up to determine the amount of fuel in the fuel tank 110. Furthermore, further parameters can be measured which are used for a range determination for fuel, in particular for a current fuel consumption.

[0042] For example, when a battery 120 is present, a second sensor 12 can be set up to determine the state of charge of the battery 120. Furthermore, further parameters can be measured which are used for a range determination of the battery 120, in particular for a current discharge rate.

[0043] The device 10 for performing range control can obtain the determined sensor values from the transmission of the sensors 11, 12. By means of the control unit 14, these sensor values can be used in order to determine therefrom a first range of the fuel share and / or a second range of the battery, which is further described in detail below. The control unit 14 of the device 10 is also set up to determine a navigation route as described in the embodiments below. For this determination, a corresponding digital map and stored navigation data can be provided, which the control unit 14 employs.

[0044] The control unit 14 is also set up to control a display 16. The display 16, also referred to as display device, graphically conveys the determined navigation route and further information on the screen to the driver.

[0045] Furthermore, the device 10 comprises an interface in order that user inputs can be acquired by the control unit 14. This interface can be implemented by means of a touch-sensitive display 16, for example, to which the present application is not limited. The control unit 14 is also set up to implement the embodiments of the methods for performing range control described below. These methods are now described in more detail.

[0046] Figure 2 A method for performing range control according to the first embodiment is described. In a first step, the acquisition of a navigation destination is performed. This can be performed by the user inputting via the above-mentioned interface. Thereafter, a first range is determined on the basis of the fuel quantity. Here, as already mentioned, the current fuel consumption can also be taken into account. Then, on the basis of the first range and the distance to the navigation destination, at least one refueling stopover can be determined. This is preferably performed when the first range is less than the distance to the navigation destination. Furthermore, a first navigation route to the navigation destination is then determined via the determined at least one refueling stopover. The determined refueling stopover is thus part of the first navigation route. These steps can be implemented by means of the control unit 14 described below. By taking into account the refueling stopover, an automatic route planning is provided with the refueling stopover integrated in the navigation planning. Thus, a multi-stop route planning for a motor vehicle with an internal combustion drive is achieved. Thereby, refueling advantageously becomes part of the route planning itself and does not have to be formulated separately by the user. Figure 1

[0047] In another step, as Figure 2 ​As shown in the example, a graphical first driving range display 20 can be presented on the display 16. The first driving range display 20 can here be configured as a graphical bar. The driving range display can also be referred to as a range display. The graphical driving range display 20 is here presented, for example, at the edge of the display 16, for example, in common with a first map view Kl of the determined first navigation route. In other embodiments, in response to an acquired user selection, a transition can be made to a detailed view in which the first driving range display 20 is presented in common with navigation route information, for example, driving instructions or distance information for required driving maneuvers, in order to follow the determined navigation route.

[0048] The driving range display 20 can here include a graphical vehicle object 21 indicating the motor vehicle 100. The graphical vehicle object 21 here represents the actual position of the motor vehicle 100. In addition, a graphical destination object 22 is presented. The graphical destination object 22 here indicates the determined navigation destination. A graphical path 26, preferably a linear path, connects the graphical vehicle object 21 with the graphical destination object 22. In this embodiment of the application, one or at least one graphical filling station object 24 is also presented, which indicates a determined at least one filling intermediate stop on the graphical path 26 between the graphical vehicle object 21 and the graphical destination object 22. If, for example, a long journey is to be driven, a plurality of filling intermediate stops can also be incorporated into the determination of the navigation route accordingly, as shown in the example. The determination of the respective filling station can here be based on the brand and / or on the fuel price. In addition, the determination can be based on catering possibilities, for example, eating possibilities. Figure 2

[0049] In addition, a range indicator 28 can be presented, which extends from the graphical vehicle object 21 along the graphical path 26. The end point of the range indicator represents the determined range. The range indicator can also be provided in all the embodiments below. The positioning of the graphical filling station object 24 can here be scaled along the graphical path 26. Thereby, the driver can estimate the distance to the intermediate stop. The display also improves the driver's perception of the driving range guidance during the journey.

[0050] ​In one embodiment of the application, the determination of the first navigation route to the navigation destination is made only via the determined at least one refueling intermediate stop. Thereby, a navigation route is provided which takes into account only refueling stations. Such a route planning can be made, for example, on the basis of an acquired user input in which this operating mode is selected. Such a mode can also be set for a plug-in hybrid vehicle, that is to say, if the motor vehicle 100 comprises, in addition to the fuel tank 110, also a battery 120 for an electric drive. Thereby, a particularly time-efficient, that is to say, fast, navigation route is provided for such a motor vehicle.

[0051] In one embodiment of the application, the travel time to the navigation destination can furthermore be made on the basis of the pure travel time and the refueling time at the determined one or more refueling stops. Such an effective travel time can be presented on the travel route display 20. The determination of this effective travel time can only be achieved if the calculation of the navigation route takes into account the required refueling stations, that is to say, obtains knowledge about the required refueling stations.

[0052] In a preferred embodiment of the application, a time constant, for example, 10 minutes, can be specified for each refueling station. In other embodiments, the actual waiting time at a refueling station can be transmitted to the motor vehicle and taken into account by the device 10 in the calculation of the travel time.

[0053] Figure 3 A method for making a range control according to a second embodiment of the application is explained. In the following, only the differences to the first embodiment are explained. For the commonalities, reference is made to the preceding description. Figure 2

[0054] It is essential for this embodiment that the motor vehicle 100 comprises, in addition to the fuel tank 110, also a battery 120 for an electric drive, which can be charged as shown in Figure 1 Thus, the motor vehicle 100 can be a plug-in hybrid vehicle.

[0055] The method here also comprises the determination of a second range. The second range can be determined on the basis of the state of charge of the battery 120. It can also be provided that additional information is determined about the current discharge rate in order to determine the second range. Thus, the second range can be determined independently of the first range. Here, the discharge rate can also be taken into account continuously in time or at certain intervals.

[0056] ​Based on the second range and the distance to the navigation destination, at least one charging intermediate stop can be determined. This is preferably carried out when the second range is smaller than the distance to the navigation destination. This can be carried out by the control unit 14 as described previously. Thus, in this embodiment, charging stops and refueling stops can be used by the device 10 for the determination of a navigation route.

[0057] In this implementation, a first navigation route to the navigation destination is determined via the determined at least one refueling intermediate stop and, in addition, via the determined at least one charging intermediate stop. Thereby, a navigation route is automatically provided, in which the fuel tank 110 and also the battery 120 can always be used for driving. Thus, a plug-in hybrid vehicle can be operated with a high electrical share by means of the determined navigation route.

[0058] In this embodiment, as shown in Figure 3 The presentation of the first driving distance display 20 on the display 16 can additionally be carried out with at least one graphical charging station object 25, which indicates the determined at least one charging intermediate stop on the graphical path 26 between the graphical vehicle object 21 and the graphical destination object 22, as shown in Figure 2 A plurality of charging stations is determined in order to reach the navigation destination with a charged battery. This implementation, i.e. taking into account charging stops and refueling stops, can also be carried out by taking a user input in which this operating mode is selected. Taking charging columns into account in the navigation route planning enables an increased electrical driving share.

[0059] In this case, the effective driving time to the navigation destination can also be carried out based on the pure driving time, the refueling time and the charging time for each stop and displayed as described above.

[0060] In a preferred implementation of the application, a time constant, for example 30 minutes, can be specified for each charging stop. In other embodiments, the actual waiting time at a charging column can be transmitted to the motor vehicle and taken into account by the device 10 in the calculation of the effective driving time. Here, the charging column can also be determined based on the price and / or the brand. Furthermore, the determination can be carried out based on the possibility of catering.

[0061] In a further implementation, it can also be provided that charging stations or refueling stations should be preferred. Thus, in such a mode, a priority can be set for charging stations or refueling stations and the determination of the navigation route is adjusted accordingly. This also includes that a setting can be taken in which only charging stations or refueling stations are planned.

[0062] Figure 4A method for controlling driving range according to a third embodiment of the present invention has been described. The differences from the previous embodiments are explained below. For commonalities, refer to the entire preceding description.

[0063] In this implementation, the determination of the first navigation route is carried out via at least one determined refueling stop and an additional charging stop. The additional charging stop is, in this case, the last stop on the first navigation route before the navigation destination. Figure 4 The image shows charging station object 25, which is not far from destination object 22. Therefore, the battery can be fully recharged shortly before arrival. For example, charging stations near the home address can be searched. Charging station determination can also be based on driving profile (Fahrprofil). Since a fully charged battery 120 is ready, the electric share can be increased during subsequent driving in the case of a plug-in hybrid vehicle.

[0064] Figure 5 A method for range control according to a fourth embodiment of the present invention has been described. The differences from the previous embodiments are explained below. For commonalities, refer to the entire preceding description.

[0065] In this embodiment, user input indicating a refueling or charging stop as the next stop is obtained. This can be done via the interface of device 10, for example, via the display 16 itself, or via the travel distance display. The determination of the first navigation route is then performed via at least one determined refueling stop and the obtained refueling or charging stop as the next stop. In this figure, for example, a charging stop as the next stop is obtained as user input, and this stop is used to calculate the first navigation route. Thus, the user can actively add and control the charging and refueling stops used for navigation route calculation. For example, the user can therefore, for example, according to... Figure 1 The plan only includes switching to electric operation when stopping for refueling, where the user drives to the nearest charging station, charges the battery, and then continues electric travel. This increases the proportion of electric travel. Conversely, when traveling electric, the user can also use a navigation route to reach a refueling station so that they can then use fuel to travel longer distances. This can be used to minimize travel time.

[0066] The settings can be made in the system settings or by using the switch on the mileage display 20 itself.

[0067] Figure 6 and Figure 7Methods for performing range-extended control according to the fifth and sixth embodiments of the application are explained. In the following only the differences to the previous embodiments are explained. For the commonalities, reference is made to the entire previous description.

[0068] In the embodiments of the application, a second navigation route to the navigation destination is determined via the determined at least one charging intermediate stop. Furthermore, a graphical second travel range display 20' can be presented on the display 16. The travel range display 20' is here configured analogously to the first travel range display 20. The travel range display comprises a graphical charging station object 25 which indicates the charging intermediate stop on the graphical path 26 between the graphical destination object 22 and the graphical vehicle object 21.

[0069] In a preferred embodiment of the application, the determination of the second navigation route to the navigation destination is only performed via the determined at least one charging intermediate stop. Thus, the second navigation route is an ecological route on which the travel can be performed with a high electrical share. The first navigation route can for example only comprise fueling stations. But the first navigation route can also be a hybrid navigation route with a mix of charging stops and fueling stops as previously described. In further embodiments of the application, the selection of the navigation route can be performed depending on the operating mode, for example fast or short and ecological, or electrical or by means of fuel.

[0070] In the method according to Figure 6 the navigation route selection from the first and second navigation route can be performed by the user. For this purpose, for example a switching element W can be provided on the travel range display 20, 20' as an interface. Alternatively, such a selection can be performed in the settings. In response to the acquired user selection, then only one of the first and second travel range display 20, 20' corresponding to the selected navigation route is displayed. This selection possibility is presented in Figure 6 Preferably, by the user's selection, the first map view K1 is also converted into the second map view K2 corresponding to the selected navigation route.

[0071] This multiple navigation calculation enables the driver to select between routes according to his preferences. Thereby, the user can also convert at any time into a mode in which he can drive with a higher electrical share. For example, the second navigation route (right in the figure) is a navigation route with charging stops only as intermediate stops. The first navigation route (left in the figure) is a navigation route with refueling stops only. Thus, the user can convert between these two extreme cases and thus can design the operation of the vehicle according to his preferences, for example in terms of an ecological driving operation. A corresponding hybrid route with refueling intermediate stops and charging intermediate stops can also be selected as the first navigation route as described above.

[0072] In a further embodiment of the application, the second navigation route comprises only at least one charging stop, while for the first navigation route only refueling intermediate stops are determined. Thus, for the second navigation route, the multi-stop route planning is implemented only for charging. For this purpose, a setting range can also be given or can be performed via a switching element W of the driving range display 20, 20' in which between two displays and two destination guides can be switched.

[0073] Figure 7 An embodiment is shown in which the method comprises presenting the first driving range display 20 and the second driving range display 20' jointly. Thereby, the two navigation routes (for example one with charging stops only and the other with refueling stops only or with mixed stops as shown in Figure 7 can be directly compared with each other. For example, the driving kilometers or the determined effective driving time can enable the user to select for a specific drive according to his preferences as described above as a comparison parameter. In response to the acquisition of the user's navigation route selection from the first and the second navigation route, then the display of the map view K1, K2 on the display 16 only corresponding to the selected navigation route takes place. For example, the first navigation route is selected here and thus the first map view K1 is shown accordingly.

[0074] The shown map views K1, K2 can be displayed by means of marker fields M1, M2. For example, the marker fields M1, M2 of the group of the first marker field M1 and the second marker field M2 can be activated which are positioned on or affiliated with the driving range display 20, 20' corresponding to the selected navigation route. For example, in the present case, the first marker field M1 is activated. Thereby, a better clarity is ensured when displaying in parallel.

[0075] The invention provides a range management for a motor vehicle having an internal combustion drive or an additional electric drive, which range management is particularly suitable for making the range control easy for the driver, increasing the electric share of travel and conveying information to the driver or user in an intuitive and comprehensible manner for operating the motor vehicle.

[0076] List of reference signs

[0077] 10 device for performing range control

[0078] 11 first sensor

[0079] 12 second sensor

[0080] 14 control unit

[0081] 16 display

[0082] 20 first travel distance display

[0083] 20' second travel distance display

[0084] 21 graphical vehicle object

[0085] 22 graphical destination object

[0086] 24 graphical refueling station object

[0087] 25 graphical charging station object

[0088] 26 graphical path

[0089] 28 range indicator

[0090] 100 motor vehicle

[0091] 110 fuel tank

[0092] 115 internal combustion engine

[0093] 120 battery

[0094] 125 electric motor

[0095] K1 first map view

[0096] K2 second map view

[0097] W switching element

[0098] M1, M2 marking grid

Claims

1. A method for range control of a motor vehicle (100) having an internal combustion drive and an electric drive, comprising: - acquiring a navigation destination; - determining a first range based on a fuel amount in a fuel tank (110) for the internal combustion drive; - determining at least one refueling intermediate stop based on the first range and a distance to the navigation destination; - determining a first navigation route to the navigation destination via the determined at least one refueling intermediate stop; determining a second range based on a state of charge of a battery (120) for the electric drive and at least one charging intermediate stop based on the second range and a distance to the navigation destination; determining a second navigation route to the navigation destination via the determined at least one charging intermediate stop; presenting a graphical first travel distance display (20) and / or a graphical second travel distance display (20') on a display (16), wherein the graphical first travel distance display has a graphical vehicle object (21) and a graphical destination object (22) and at least one graphical refueling station object (24) indicating the determined at least one refueling intermediate stop on a graphical path (26) between the graphical vehicle object (21) and the graphical destination object (22), wherein the graphical second travel distance display (20') comprises at least one graphical charging station object (25) indicating the charging intermediate stop on the graphical path (26) between the graphical destination object (22) and the vehicle object (21); in response to acquiring a navigation route selection of the user between the first and second navigation route, displaying only a map view (K1, K2) on the display (16) corresponding to the selected navigation route.

2. The method of claim 1, wherein, determining the first navigation route via the determined at least one refueling intermediate stop and charging intermediate stop such that the charging intermediate stop is the last intermediate stop of the first navigation route before the navigation destination.

3. The method of claim 1, wherein, acquiring a user input indicating a selection of a refueling intermediate stop or a charging intermediate stop as the next intermediate stop and determining the first navigation route via the determined at least one refueling intermediate stop and the acquired refueling intermediate stop or charging intermediate stop as the next intermediate stop.

4. The method according to any one of claims 1 to 3, characterized in that, in response to acquiring the navigation route selection of the user from the first and second navigation route, displaying only one of the first travel distance display (20) and the second travel distance display (20') corresponding to the selected navigation route.

5. The method according to any one of claims 1-3, characterized in that, enabling a marker field (M1, M2) of a group of first and second marker fields (M1, M2) positioned on or attributed to the travel distance display (20, 20') corresponding to the selected navigation route.

6. The method according to any one of claims 1 to 3, characterized in that, The travel time to the navigation destination is determined based on the pure travel time and a refueling time and / or a charging time at the at least one refueling intermediate stop and / or at least one charging intermediate stop, and the travel time is presented next to or on the first travel route display (20) and / or the second travel route display (20').

7. A device (10) for range control of a motor vehicle (100) having an internal combustion drive, wherein The device (10) is set up to implement the method according to any one of claims 1 to 6.

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