DE102016202453A1 - Motor vehicle with an electric vehicle drive and an internal combustion engine and method for operating such a motor vehicle - Google Patents

Abstract

The invention relates to a method for operating a motor vehicle (1) with an electric vehicle drive (2) and an internal combustion engine (3). In this case, the motor vehicle (1) comprises an accumulator (4) with an energy content for storing and providing electrical energy for the electric vehicle drive (2). It further comprises a generator (5) for charging the accumulator (4) by converting kinetic energy into electrical energy. In the method, a value of a planning parameter for planning the energy content of the accumulator (4) is detected and the current energy content of the accumulator (4) and energy consumption data of the motor vehicle (1) are detected. Based on the value of the planning parameter and the energy consumption data, an accumulator gradient is determined and the electric vehicle drive (2), the internal combustion engine (3) and the generator (5) are controlled in dependence on the energy consumption data such that a temporal change of the energy content of the accumulator (4 ) follows the particular accumulator gradient. The invention further relates to a motor vehicle (1) with an electric vehicle drive (2) and an internal combustion engine (3).

Description

The invention relates to a motor vehicle having an electric vehicle drive and an internal combustion engine and to a method for operating such a motor vehicle.

To reduce the consumption of fossil fuels and the associated emissions modern vehicles are increasingly equipped with electric drives. In addition, since the storage capacity of conventional accumulators for storing energy for such electric motors is limited, an internal combustion engine is often provided to increase the range of the vehicle by resorting to classic fuels. Further, in these so-called hybrid vehicles, the specific strengths of the various powertrains can be exploited under the conditions of the respective trip, such as improving the efficiency of driving by using the electric drive in city traffic and driving with the internal combustion engine over long distances at a constant high speed.

While fueling a vehicle with conventional fuel by supplying a liquid, electrical energy can be supplied to a battery in various ways, which are exemplified below: The vehicle can be supplied via a connection to an external power grid with electrical energy or an empty battery can be exchanged for a full one. Further, the internal combustion engine of the vehicle may drive a generator that generates electrical energy and charges the accumulator. Further, a Rekuperationsbremse can be used to convert kinetic energy of the vehicle into electrical energy during braking and thereby to charge the accumulator.

The DE 10 2011 011 345 A1 for example, describes a method for controlling the Rekuperationsverhaltens in a motor vehicle. In this case, a basic value of a recuperation torque to be used for recuperation can be set, and it is also possible to set an intermediate value for the recuperation torque which is used provisionally.

Furthermore, the DE 10 2012 007 126 A1 a method for controlling a charging of an electrical energy storage device, in which the charging process can be visualized, for example, as a diagram and edited by means of a touch screen.

In the in the DE 10 2010 004 846 A1 described method for recuperation for a vehicle can be adjusted to what extent an effect corresponding to the drag torque of an internal combustion engine is generated, wherein a recuperation is performed. It can also be made a setting so that the drag torque of the engine is compensated by the electric motor.

However, it is considered disadvantageous in known methods and motor vehicles that the user of the vehicle is informed only very limitedly about the operating parameters of the vehicle and can influence the behavior of the system and in particular parameters which influence the energy consumption during the journey.

It is therefore an object of the present invention to provide a method and a motor vehicle of the type mentioned, which allow a particularly efficient control of the operation of the motor vehicle and thereby in particular allow a particularly easily detectable display and setting relevant operating parameters.

According to the invention, this object is achieved by a method having the features of claim 1 and a motor vehicle having the features of claim 13. Advantageous embodiments and further developments emerge from the dependent claims.

The inventive method is used to operate a motor vehicle with an electric vehicle drive and an internal combustion engine. In this case, the motor vehicle comprises an accumulator with an energy content for storing and providing electrical energy for the electric vehicle drive and a generator for charging the accumulator by converting kinetic energy into electrical energy. In the method, a value of a planning parameter for planning the energy content of the accumulator is detected. Furthermore, the current energy content of the accumulator and energy consumption data of the motor vehicle are detected. On the basis of the value of the planning parameter and the energy consumption data, an accumulator gradient is determined and the electric vehicle drive, the internal combustion engine and the generator are controlled in dependence on the energy consumption data such that a temporal change of the energy content of the accumulator follows the determined accumulator gradient.

This advantageously allows the operation of the motor vehicle to be controlled particularly efficiently on the basis of the planning parameter. In particular, when the planning parameter is acquired, it is possible to enable a specific influencing by the user.

According to the invention, the recorded energy consumption data comprise in particular information about how much energy has to be applied to the operation and drive of the vehicle. This value results for example from the current speed, a set desired speed and / or the degree of actuation of an accelerator pedal and a tilt of the vehicle. Furthermore, other energy consumers of the vehicle can be taken into account.

The energy consumption data may include, in addition to information about the consumption of energy, information about the possibility of recovering energy by recuperation, such as during a descent or when braking the vehicle. The energy consumption data may in particular include information about the consumption or the possibilities for obtaining electrical energy. They may further include information on limits for the output or reception of energy, such as a maximum charging rate or a maximum power output of the accumulator or the generator.

For planning the energy content of the accumulator, a planning parameter is used which can be detected in various ways known per se. For example, it may be detected based on a user input or determined by a device of the vehicle. In particular, a unit for automatically determining the planning parameter can be provided, for example in order to adapt the control to the driving situation.

The planning parameter includes a specification for controlling the electric vehicle drive, the internal combustion engine and the generator. During their operation, the energy content of the accumulator changes, among other things. This change in the energy content is in particular a target variable in the control.

In particular, an accumulator gradient is determined for the controller, which specifies how fast the energy content changes. It can be provided, for example, that the energy content does not change, that the accumulator is emptied or that the energy content is increased. The increase of the energy content can be effected in particular by recuperation, for example during a braking process, or by a drive of the generator by the internal combustion engine. The accumulator gradient corresponds in particular to the actual value of the temporal or spatial change of the energy content of the accumulator. It must therefore be considered, for example, how fast the battery can be charged or discharged, which maximum capacity it has or how high the current energy consumption of the vehicle is.

In one embodiment of the method according to the invention, a display is generated and output, the display comprising an output of the planning parameter. As a result, the user can advantageously record the planning parameter.

The output can be done in various ways, for example by means of digits or a scale. The displayed value of the planning parameter can be expressed as a numerical value, for example as a percentage value or as a size ratio. The actual value of the planning parameter can be converted for the display into a displayed value easier for the user to grasp.

In particular, the display can include a scale area and a pointer element, wherein the value of the planning parameter can be read off relative to the scale area on the basis of the arrangement of the pointer element. This can be done, for example, by type of per se known diagram types, such as a bar chart. Further, a graphical representation of an analogue adjustment or display element may be displayed. Furthermore, a coding of the represented value of the planning parameter can take place on the basis of colors or further display properties known per se.

In a further embodiment, the display comprises at least one planning parameter setting element and the value of the planning parameter is detected by an operation of the planning parameter setting element. As a result, the user can advantageously enter the planning parameter.

In particular, the display comprises a graphical user interface and the scheduling parameter setting element is an operating object. In the context of the invention, a control object is understood to mean a control element of a graphical user interface, for example a graphical user interface. An operating object differs from elements and surfaces for purely information display, so-called display elements, in that they can be operated and / or selected by means of an operator control action. When operating a control object, a function assigned to it is executed. The function may lead to a change in the information display or devices whose operation is supported by the information display can be controlled. Furthermore, an input can be detected based on the function. The operating objects can thus replace conventional mechanical switches and controllers.

The operating object for the input of the planning parameter comprises in particular a scale, a pointer and / or other graphical representations of the value of the planning parameter. The operating object may also include a possibility for entering a numerical value.

In particular, the arrangement of a pointer element can be changed relative to a scale range for operating the adjusting element. In this case, the value of the scheduling parameter is indicated by a position of the pointer element relative to the scale area and captured as input. For example, this can be represented by translation and / or rotation of the pointer element.

In particular, the adjustment allows a stepless or finely graded change of the planning parameter. The user can thereby tune the control of the operation of the motor vehicle for the current driving situation and thereby regulate, for example, the fuel consumption of the vehicle.

In a further development, the display comprises at least one preselection button, wherein the preselection button is assigned a preselection value of the planning parameter and by pressing the preselection button the assigned preselection value is recorded as a planning parameter. This can advantageously facilitate the input of the planning parameter for the user.

For example, buttons can be displayed that, when selected, set a specific value of the planning parameter. The concrete value of the planning parameter, which is set by a preselection button, does not have to be detectable by the user, but rather the preselection button can be formed such that it contains, for example, a symbol or a caption with a designation for a preselection or a preselection having predetermined operating mode for the controller.

In one embodiment, the preselection value of the planning parameter is formed such that the accumulator gradient is determined such that the motor vehicle is driven essentially completely by means of the electric vehicle drive ("EV mode"); or the motor vehicle is driven substantially completely by means of the internal combustion engine, wherein furthermore the energy content of the accumulator is charged by the operation of the internal combustion engine ("charge mode"); or the energy content of the accumulator is kept constant ("hold mode").

The user can thus advantageously quickly and easily achieve a basic adjustment of the control. In particular, he can adjust the planning parameters based on his knowledge and assessment of the driving situation so that an appropriate for his claims operation of the motor vehicle is achieved. For example, the user can intentionally bring about a discharge of the accumulator, if he knows that at the end of the trip there is a favorable charging option. On the other hand, he can cause about the charging of the battery to have at a later date over the highest possible range for the electric drive.

The accumulator gradient can be formed on the basis of the planning parameter approximately so that a discharge of the accumulator is performed. It can be determined based on the planning parameter, how fast the discharge should be performed. For example, the accumulator can be unloaded as quickly as possible in an "EV mode", which can lead, for example, to driving substantially exclusively with the electric traction drive. In this case, the faster the discharge, the faster the accumulator gradient, which may be limited by the energy consumption data, for example. Furthermore, a maximum output power of the accumulator can be taken into account.

On the other hand, the scheduling parameter may provide that the accumulator should be charged in a "charge mode", such as by driving the generator through the internal combustion engine, thereby generating electrical current that increases the energy content of the accumulator. Furthermore, energy recovered by recuperation can be used. Also, where appropriate, technical limitations must be considered as to how fast charging can be performed.

The accumulator gradient can also be formed on the basis of the planning parameter in a "hold mode" so that the energy content does not change, but is kept constant. In this case, the vehicle can be operated so that the accumulator as much energy is supplied as removed or that only the internal combustion engine is used to drive the vehicle.

In a further refinement, the preselection value of the planning parameter is formed in such a way that the value of the planning parameter is continuously redetermined and set automatically. This advantageously allows a particularly convenient, automated operation of the motor vehicle. In particular, this is done in an "auto mode". The user can use the display of the planning parameter to record and track the development of the value of the automatically determined planning parameter.

In one development, the planning parameter is optimized based on a target, wherein the target includes energy consumption and / or range and / or driving dynamics of the motor vehicle. This advantageously allows the operation of the motor vehicle to be specifically controlled in such a way that the target is achieved. In particular, this is done with an automatic determination of the planning parameter.

The target can be detected in particular on the basis of a user input or predefined for a setting. It can also be dynamically determined and adapted to a driving situation, for example in order to achieve a specific driving style of the vehicle.

The display may further include a display object including information about a driving parameter of the vehicle. In particular, the driving parameter depends on the choice of the planning parameter. For example, the driving parameter may be the predicted range of the vehicle, a predicted travel time or a fuel consumption. The user can thus be made clear consequences of choosing a particular planning parameter, such as increased fuel consumption and a lower range as a result of the charging of the accumulator by the internal combustion engine.

In one embodiment, the display further comprises an energy content display element, wherein the current energy content of the rechargeable battery is output on the basis of the energy content display element. The user can thereby quickly and easily record how much electrical energy is currently available. The energy content display element may have, for example, a longitudinal extent corresponding to the maximum energy content in a manner known per se, and the current energy content may be displayed on the basis of the arrangement of a further element along the longitudinal extent.

In one embodiment, at least one charge limit parameter is also detected, wherein an upper limit or a lower limit of the energy content of the accumulator is determined based on the charge limit parameter and the accumulator gradient is further determined such that the energy content does not exceed the upper limit or the lower one Limit not lower. In this case, the display further comprises at least one charge limit object, by means of which the upper limit or the lower limit is output.

As a result, it can be advantageously determined that, for example, a certain reserve of electrical energy is kept available in order to have a certain range with the electric vehicle drive at a later point in time. On the other hand, it can be dispensed with charging beyond a certain energy content, if, for example, at a later time a cheaper way to recharge exists, such as a descent later in the journey.

In a further embodiment, the charge limit object is operable and the charge limit parameter is detected by operating the charge limit object. The user can thus advantageously enter the charge limit parameter. In particular, an upper and a lower limit for the energy content of the accumulator can be defined.

In a development, the motor vehicle has at least one activatable uphill mode, wherein, when the uphill mode is activated, the accumulator gradient is controlled such that the accumulator is discharged. In particular, charging of the accumulator is inhibited by the internal combustion engine when activated uphill mode. It can thus be advantageously anticipated that at the end of the climb a recharging of the battery will be possible, such as in a subsequent descent.

In a development, the motor vehicle has at least one activatable descent mode, wherein, when the descent mode is activated, the accumulator gradient is controlled such that the accumulator is charged by means of recuperation. In particular, the Zustatschwelle above which the internal combustion engine additionally or alternatively to the electric motor starts, set high.

In particular, when the mode of ascent or descent is activated, a plausibility check is carried out, for example based on a detected vehicle inclination, and the respective mode is deactivated if there is no sufficient plausibility for this. For example, the plausibility for the descent mode is higher when the vehicle is directed downwards, ie, downhill. Conversely, the plausibility of an uphill journey can also be checked. The plausibility check can avoid that the vehicle is operated with inappropriate settings.

The motor vehicle according to the invention comprises an electric vehicle drive and an internal combustion engine. It also comprises an accumulator with an energy content for storing and providing electrical energy for the electric vehicle drive and a generator for charging the accumulator by converting kinetic energy into electrical energy. It also includes a detection unit, by which a value of a planning parameter for planning the Energy content of the accumulator, the current energy content of the accumulator and energy consumption data of the motor vehicle can be detected. It also comprises a control unit, by means of which an accumulator gradient can be determined on the basis of the value of the planning parameter and the energy consumption data and the electric vehicle drive, the internal combustion engine and the generator can be controlled in dependence on the energy consumption data such that a temporal change of the energy content of the accumulator corresponds to the determined accumulator gradient follows.

The motor vehicle according to the invention is in particular designed to implement the method according to the invention described above. The motor vehicle thus has the same advantages as the method according to the invention.

In an embodiment of the motor vehicle according to the invention, a display can be generated by the control unit and output by a display unit of the motor vehicle, the display comprising an output of the planning parameter. As a result, the user can advantageously record the planning parameter.

In a further embodiment, the motor vehicle comprises an input unit, in particular a touch-sensitive surface, in particular a touchscreen or a touchpad, and / or a rotary-push-dial. Furthermore, the display comprises a graphical user interface and the planning parameter can be detected by the input unit on the basis of the graphical user interface. This advantageously allows a simple detection of the planning parameter on the basis of a user input.

A rotary push-button actuator according to the invention is an operating element that can be operated by a rotation of the operating element and / or a pivoting of the operating element and / or a translation of the operating element in a horizontal plane and / or a translation along a vertical axis of the operating element is. In particular, a translation along the vertical axis confirms an input.

A touch screen according to the invention comprises a display surface and a touch-sensitive surface formed thereon. For example, a film may be arranged above the display surface, with which the position of a touch of an actuating object can be detected. The actuating object is, in particular, the fingertip of a user. The film can be designed, for example, as a resistive touch foil, capacitive touch foil or piezoelectric foil. Furthermore, the film can be designed so that a heat flow, for example, emanating from the fingertip of the user, is measured. From the temporal development of the contact of the film, various inputs can be obtained. For example, in the simplest case, the touching of the film at a certain position can be detected and assigned to a graphical object displayed on the display surface, in particular a control object. Furthermore, the duration of the touch may be detected at a particular position or within a certain range, and gestures may be detected, such as swiping gestures or multiple touches within a particular time interval.

The invention will now be explained by means of embodiments with reference to the drawings.

1 shows an embodiment of the motor vehicle according to the invention and

2 shows an example of a display that was generated by the method according to the invention.

In reference to 1 an embodiment of the motor vehicle according to the invention will be explained.

A motor vehicle 1 includes an electric vehicle drive 2 , In the illustrated case, an electric motor 2 , It also includes an internal combustion engine 3 , The electric motor 2 is with an accumulator 4 coupled, the electrical energy for the electric vehicle drive 2 store and deploy. The accumulator 4 is also with a generator 5 coupled. By the generator 5 kinetic energy can be converted into electrical energy, which is then used to charge the accumulator 4 can be used. The kinetic energy is about the same with the generator 5 coupled combustion engine 3 provided or by recuperation during braking operations from the movement of the vehicle 1 won.

The vehicle also includes a touch screen 8th with a display area 8a and a touch-sensitive surface 8b as well as a turn-push actuator 9 , The car 1 further comprises a control unit 7 with a registration unit 6 , wherein the control unit 7 connected to the above-mentioned facilities of the vehicle.

In reference to 1 an embodiment of the method according to the invention will be explained.

For controlling the electric vehicle drive 2 , the internal combustion engine 3 and the generator 5 First, the current energy content of the accumulator 4 detected. This is done by the acquisition unit 6 , the further energy consumption data of the vehicle 1 detected. In this case, the energy consumption data include information about how much energy must be provided for the operation of the motor vehicle currently and / or at a later time. This takes into account, among other things, at what speed the motor vehicle 1 currently moving and what target speed it should reach. For example, energy is needed to the motor vehicle 1 while kinetic energy can be recovered by recuperation if speed is to be reduced. The energy consumption data further includes information about other consumers of electrical energy in the motor vehicle 1 for which energy must be provided for their operation.

Furthermore, a planning parameter for planning the energy content of the accumulator 4 detected. In the illustrated embodiment, the detection takes place by means of a user input using the touch screen 8th and / or the rotary-push actuator 9 , This is done on the display area 8a of the touchscreen 8th a graphical user interface is displayed, the operation of which is used to record the planning parameter. The graphical user interface is explained in more detail below.

The planning parameter specifies criteria for how the electrical and kinetic energy of the motor vehicle 1 is provided and / or stored. In particular, it is determined by the planning parameter, such as the charging and discharging of the accumulator 4 during operation of the motor vehicle 1 is controlled. The energy content of the accumulator 4 in particular by the operation of the electric motor 2 decreased while recuperation and operation of the generator 5 through the internal combustion engine 3 can be increased. Based on the value of the planning parameter and the energy consumption data, an accumulator gradient is determined. The accumulator gradient indicates the change of the energy content of the accumulator 4 in particular the derivation of the energy content according to the time or the route. The accumulator gradient thus indicates how fast the accumulator is 4 is being loaded or unloaded.

Through the control unit 7 become the electric motor 2 and the internal combustion engine 3 as well as the generator 5 so controlled that the energy content of the accumulator 4 during operation of the motor vehicle 1 changed according to the accumulator gradient.

In this case, the planning parameter can be selected, for example, such that the energy content of the accumulator 4 is kept substantially constant. For this purpose, a "hold mode" can be activated in particular. In this case, the motor vehicle 1 so operated that the accumulator 4 essentially no electrical energy is taken or supplied as much electrical energy as is taken.

The planning parameter can also be selected, in particular by activating an "EV mode", such that a rapid discharging of the accumulator 4 is reached. For this purpose, in particular the electric motor 2 to drive the vehicle 1 used. The accumulator gradient is determined in this case so that the energy content of the accumulator 4 Reduced as quickly as possible, for example as a function of the target speed of the motor vehicle 1 and the maximum output power of the accumulator 4 and the electric motor 2 ,

Conversely, the planning parameter, in particular in a "batch mode", can be selected such that charging of the accumulator is as fast as possible 4 is reached. In addition to the recuperation of the internal combustion engine in particular 3 be used to the generator 5 to propel electrical energy to recharge the battery 4 to create. Again, the maximum achievable accumulator gradient depends on several factors, for example on the maximum capacity of the accumulator 4 from the generator 5 achievable output power, the maximum input power of the accumulator 4 as well as the characteristics of the internal combustion engine 3 ,

In addition to the extreme values described above, the planning parameter can also assume intermediate values, for example a slower discharge of the accumulator 4 to achieve, in particular by connecting the internal combustion engine 3 , Furthermore, a slower charging of the accumulator 4 through the internal combustion engine 3 be provided, for example, to save fuel.

The car 1 can also be operated in an "auto mode", wherein the planning parameter is continuously determined automatically. As a result, the accumulator gradient is continuously redetermined and adapted to the possibly changed driving situation.

In the "auto" mode, the planning parameter is determined in such a way that a predefined target is optimized. The target is set in the embodiment by a predetermined setting, but it can be changed by user input. For example, the planning parameter is determined so that the total energy consumption of the motor vehicle 1 is minimized. Further, the electric power consumption or the fuel consumption can be minimized. Furthermore, the range of the motor vehicle 1 can be maximized or it can be a specific one Driving dynamics of the motor vehicle 1 be set, for example, to achieve a high torque or for a particularly fast or dynamic driving.

The car 1 can also be operated in an uphill mode ("Uphill Mode"), wherein the accumulator 4 is unloaded specifically. In the illustrated example, the detection unit 6 an inclination angle of the motor vehicle 1 recorded and a plausibility check is performed, it being determined whether the motor vehicle 1 just do a ride uphill. If this is not the case, the uphill mode can be deactivated.

The user can be activated in the uphill mode by the accumulator 4 use stored electrical energy to reach the vehicle to a greater height, it being assumed that then followed during a ride down the energy content of the battery 4 can be replenished. For this purpose, in particular a downhill mode ("downhill mode") is provided, in which a maximum recuperation for charging the battery 4 is being used. In particular, while the Zustartschwelle is met, so that the internal combustion engine 3 is switched to the electric drive only at a higher energy requirement than usual. This will attempt to cover the entire mountain with the electric vehicle drive 2 to cover. Again, in the illustrated example, a plausibility check is performed, which can be deactivated based on the detected vehicle inclination of the mode, so that about a drive uphill in the descent mode is avoided.

In reference to 2 An example of a display produced by means of the method according to the invention will be explained. It is assumed that the above-described embodiments of the motor vehicle and method according to the invention.

In the 2 represented graphical user interface is through the display area 8a of the touchscreen 8th displayed. An operation can be by means of the touch-sensitive surface 8b and / or the rotary-push actuator 9 respectively.

The user interface comprises elements for outputting and inputting parameters, in particular for the planning parameter and the energy content of the accumulator 4 ,

To represent the planning parameter is a scale range 10 provided in the form of a ring segment. Concentric with the scale area 10 is a knob representation 11a provided, which is a pointer element 11 through which a position of the scale area 10 a rotation angle of the rotary knob shown 11a equivalent. The position of the pointer element 11 relative to the scale area 10 Specifies the value of the planning parameter.

To the user, the assignment of a value of the planning parameter to a position of the scale range 10 To facilitate, are in the scale area 10 Gradientendarstellungen 10a . 10b which indicates that with increasing distance from a middle position to the left according to the gradient representation "batch" 10a an ever stronger charging of the accumulator 4 is set. Conversely, the accumulator 4 unloaded the faster a position is selected to the right away from a center position. The respective extreme points are additionally marked by the fact that in the area of the left end of the ring-segment-shaped scale area 10 a pre-selection button "batch" 12a is displayed while on the right side corresponding to a preselection button "EV" 12c is pictured. In the area of the middle position becomes above the scale range 10 a prefix button "Hold" 12b shown. At the center of the knob presentation 11a becomes a preselection button "Auto" 12d shown.

The user can enter a value of the planning parameter by taking a position of the scale area 10 selects. This can be done by touching or tapping the scale area 10 take place at a desired location. The planning parameter is then assigned a value based on the angle assigned in the selected position on the ring segment. Furthermore, by a swipe gesture on the touch screen, a rotation of the rotary knob shown 11a or it can be the rotary-push-dial 9 of the vehicle 1 used to enter the planning parameter. By selecting the area code button 12a to 12c predetermined values of the planning parameter can be detected.

By selecting the prefix button "Auto" 12d The planning parameter is determined automatically on an ongoing basis. There is an output of the set value of the planning parameter based on the position of the pointer element 11 , In the illustrated embodiment, a rotation of the knob 11a is pictured.

In further embodiments, the user input may be by means of a tap and / or swipe gesture with respect to the scale element 10 respectively. In further exemplary embodiments, the display of the planning parameter takes place alternatively or additionally on the basis of digits, and the user input can be made on the basis of digits, for example a keyboard.

The user interface also includes a range indicator 13 , by which an estimated residual range of the motor vehicle 1 is shown. In particular, the value displayed here is recalculated and displayed depending on the selected planning parameter, so that the user when entering the planning parameter, the consequences for the operation of the motor vehicle 1 can capture.

In other embodiments, alternatively or additionally, another parameter is displayed, for example energy consumption. In particular, the displayed parameter may correspond to the target for the "auto" mode. It is thus possible to display the value of the parameter which is optimized for the automatic determination of the planning parameter.

The graphical user interface further includes an energy content scale 15 with an energy content pointer 15a , wherein by the arrangement of the energy content pointer 15a relative to the energy content scale 15 the current energy content of the accumulator 4 is issued. This is indicated by the caption "SOC" 15b (State of charge, energy content, state of charge) clarified. At the energy content scale 15 are also charge limit objects 16a . 16b arranged by which a minimum and maximum energy content of the accumulator 4 is shown. Here are the charge limit objects 16a . 16b operable, in particular, they can by means of a swipe gesture on the touch screen 8th and / or an actuation of the rotary-push-actuator 9 be shifted, with corresponding to the minimum or maximum energy content of the accumulator 4 is adjusted.

In further embodiments, only a single charge limit object can be displayed, for example, only a minimum or maximum energy content of the accumulator 4 define.

The graphical user interface also includes a Uphill button 14a and a button "Downhill" 14b , By pressing the "Uphill" button 14a becomes the uphill mode of the motor vehicle 1 activated if a plausibility check is positive. Accordingly, pressing the "Downhill" button 14b the descent mode of the motor vehicle 1 unless the result of a plausibility check is in conflict.

In other embodiments, the display can be done in other ways, in particular, the planning parameters can be displayed continuously or in appropriate fine levels, in particular, intermediate levels between the values can be displayed, which set in the preselected operating modes "charge", "Hold" and "EV" become. In particular, the displays may comprise operable elements, wherein a scheduling parameter may be input by a user input. Again, the input can be made continuously or in suitable stages, in particular intermediate stages can be set between the mentioned operating modes.

LIST OF REFERENCE NUMBERS

1

motor vehicle

2

Electric vehicle drive, electric motor

3

internal combustion engine

4

accumulator

5

generator

6

acquisition unit

7

control unit

8th

touchscreen

8a

display area

8b

Touch-sensitive surface

9

Rotary push-button control

10

scale range

10a

Gradient display "batch"

10b

Gradient representation "EV"

11

pointer element

11a

Knob representation

12a

Pre-selection button "Charge"

12b

Preselection button "Hold"

12c

Area code button "EV"

12d

Area code button "Auto"

13

Range indicator

14a

Uphill button

14b

Downhill button

15

Energy content Scale

15a

Energy content pointer

15b

Label "SOC"

16a, 16b

Charge Limit objects

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011011345 A1 [0004]
• DE 102012007126 A1 [0005]
• DE 102010004846 A1 [0006]

Claims (15)

Method for operating a motor vehicle ( 1 ) with an electric vehicle drive ( 2 ) and an internal combustion engine ( 3 ); the motor vehicle ( 1 ) comprises: - an accumulator ( 4 ) with an energy content for storing and providing electrical energy for the electric vehicle drive ( 2 ); and a generator ( 5 ) for charging the accumulator ( 4 ) by converting kinetic energy into electrical energy; the method comprising: a value of a planning parameter for planning the energy content of the accumulator ( 4 ) is detected; - the current energy content of the accumulator ( 4 ) and energy consumption data of the motor vehicle ( 1 ) are recorded; - an accumulator gradient is determined on the basis of the value of the planning parameter and the energy consumption data; and - the electric vehicle drive ( 2 ), the internal combustion engine ( 3 ) and the generator ( 5 ) are controlled in dependence on the energy consumption data so that a temporal change of the energy content of the accumulator ( 4 ) follows the particular accumulator gradient.  Method according to claim 1, characterized marked that an advertisement is generated and output; in which the display comprises an output of the planning parameter. Method according to claim 2, characterized in that the display comprises at least one planning parameter setting element ( 11 ) and the value of the planning parameter by an operation of the planning parameter setting element ( 11 ) is detected. Method according to claim 2 or 3, characterized in that the display has at least one preselection button ( 12a . 12b . 12c . 12d ), whereby the preselection button ( 12a . 12b . 12c . 12d ) a preselection value of the planning parameter is assigned and by pressing the preselection button ( 12a . 12b . 12c . 12d ) the assigned preselection value is recorded as a planning parameter. A method according to claim 4, characterized in that the preselection value of the planning parameter is formed so that the accumulator gradient is determined so that - the motor vehicle ( 1 ) substantially completely by means of the electric vehicle drive ( 2 ) is driven; or - the motor vehicle ( 1 ) substantially completely by means of the internal combustion engine ( 3 ), wherein further the energy content of the accumulator ( 4 ) by the operation of the internal combustion engine ( 3 ) is charged; or - the energy content of the accumulator ( 4 ) is kept constant. A method according to claim 4, characterized in that the preselection value of the planning parameter is formed so that the value of the planning parameter is continuously redetermined and set automatically. A method according to claim 6, characterized in that the planning parameter is optimized based on a target, wherein the target includes energy consumption and / or a range and / or driving dynamics of the motor vehicle. Method according to one of claims 2 to 7, characterized in that the display further comprises an energy content display element ( 15 ), wherein, based on the energy content display element ( 15 ) the current energy content of the accumulator ( 4 ) is output. Method according to one of claims 2 to 8, characterized in that further at least one charge limit parameter is detected, wherein on the basis of the charge limit parameter, an upper limit or a lower limit of the energy content of the accumulator ( 4 ) and the accumulator gradient is further determined such that the energy content does not exceed the upper limit or does not fall below the lower limit, the display further comprising at least one charge limit object ( 16a . 16b ) through which the upper limit or the lower limit is issued. Method according to claim 9, characterized in that the charge limit object ( 16a . 16b ) and the charge limit parameter can be operated by operating the charge limit object ( 16a . 16b ) is detected. Method according to one of the preceding claims, characterized, in that the car ( 1 ) has at least one activatable uphill mode, wherein, when the uphill mode is activated, the accumulator gradient is controlled so that the accumulator ( 4 ) is unloaded. Method according to one of the preceding claims, characterized in that the motor vehicle ( 1 ) has at least one activatable descent mode, wherein, when the descent mode is activated, the accumulator gradient is controlled such that the accumulator ( 4 ) is charged by recuperation. Motor vehicle ( 1 ) with an electric vehicle drive ( 2 ) and an internal combustion engine ( 3 ), comprising: - an accumulator ( 4 ) with an energy content for storing and providing electrical energy for the electric vehicle drive ( 2 ); A generator ( 5 ) for charging the accumulator ( 4 ) by converting kinetic energy into electrical energy; A registration unit ( 6 ), by which a value of a planning parameter for planning the energy content of the accumulator ( 4 ), the current energy content of the accumulator ( 4 ) and energy consumption data of the motor vehicle ( 1 ) are detectable; A control unit ( 7 ), by means of which an accumulator gradient can be determined on the basis of the value of the planning parameter and the energy consumption data, and the electric vehicle drive ( 2 ), the internal combustion engine ( 3 ) and the generator ( 4 ) are controllable in dependence on the energy consumption data such that a temporal change of the energy content of the accumulator ( 4 ) follows the particular accumulator gradient. Motor vehicle ( 1 ) according to claim 13, characterized in that by the control unit ( 6 ) can be generated and displayed by a display unit ( 8a ) of the motor vehicle ( 1 ), the display comprising an output of the planning parameter. Motor vehicle according to claim 14, characterized in that the motor vehicle ( 1 ) an input unit ( 8b . 9 ), in particular a touch-sensitive surface ( 8b ) and / or a rotary-push-dial ( 9 ); the display comprises a graphical user interface; and the planning parameter through the input unit ( 8b . 9 ) can be detected on the basis of the graphical user interface.

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