Vehicle with boost operating mode

Abstract

Battery electric vehicle (1), in particular passenger cars, - with an electric drive device (2) for propelling the vehicle (1), which has at least one electric motor (3), - with an electrical energy storage battery (5) for supplying the drive unit (2) with electrical energy, - with a control unit (9) for controlling the drive unit (2), - with a call-up device designed as an accelerator pedal (11) which is adjustable by the driver and coupled to the control unit, for calling up driving performance, - wherein the control unit (9) is configured to enable several operating modes selectable by the driver, - where at least one standard operating mode and one boost operating mode are selectable, - wherein the control unit (9) is configured to provide a higher available electrical system power in boost mode than in the respective standard operating mode, so that a greater driving power can be accessed via the call-up device in boost mode than in the respective standard operating mode, - wherein the control unit (9) is configured to adjust the level of available system power in boost mode as a function of at least one of the following parameters: current battery charge level (SOC), current accelerator pedal position, current temperature of at least one component of the drive unit (2), current temperature of the battery (5), characterized in that - that, in addition, a race start operating mode can be selected for maximum acceleration of the vehicle (1) from a standstill, - that the control unit (9) is configured to provide a maximum available power when race start operating mode is activated, which is higher than the maximum available system power of any standard operating mode, - that the control unit (9) is configured such that the maximum available system power in boost mode is greater than the maximum available system power in any standard operating mode and less than the maximum available power in race start mode.

Description

[0001] The present invention relates to a battery-electric vehicle, in particular a passenger car, having the features of the preamble of claim 1.

[0002] A conventional vehicle is known from EP 3 495 192 A1 and comprises an electric drive device for driving the vehicle, which has at least one electric motor, a battery storing electrical energy for supplying the drive device with electrical energy, a control device for controlling the drive device, and a call-up device for calling up a driving power level, which can be adjusted by the driver and is coupled to the control device. The known vehicle is a motorcycle, and the call-up device, referred to therein as a throttle, is formed by a rotatable handle. The control device is configured to implement several operating modes selectable by the driver.At least one standard operating mode and one boost operating mode are selectable, wherein the control device is configured such that it provides a higher available electrical system power in the boost operating mode than in the respective standard operating mode, so that a greater driving power can be called up via the accelerator pedal in the boost operating mode than in the respective boost operating mode.

[0003] From DE 10 2019 101 782 A1, a generic battery-electric vehicle is known which differs from the above-mentioned conventional vehicle in that the call-up device is an accelerator pedal and that the control device is configured such that, in boost operating mode, it sets the level of the callable system power depending on at least one of the following parameters: current battery charge state, current accelerator pedal position, current temperature of at least one component of the drive device, current temperature of the battery.

[0004] DE 10 2019 121 444 A1 describes a battery-electric vehicle with various operating modes, namely "ECO+", "ECO", "COMFORT", "SPORT", "SPORT+", and "BOOST". More power is provided in the "SPORT", "SPORT+", and "BOOST" operating modes than in the "ECO+", "ECO", and "COMFORT" operating modes. The "ECO+", "ECO", "COMFORT", "SPORT", and "SPORT+" operating modes can be selected via a control element. In all of these operating modes, an E-Boost reserve can be activated as needed. This is done by pressing a boot button, which is separate from the control element and activates the "BOOST" operating mode.

[0005] From DE 10 2018 128 695 A1 a battery-electric vehicle is known in which the temperature of the battery is controlled depending on the current operating mode.

[0006] From US 2016 / 0 236 588 A1, a battery-electric vehicle is known which, in addition to the battery, has an additional battery which is used during a boost operating mode in addition to supplying the drive device with electrical energy.

[0007] Further battery-electric vehicles with different operating modes are known from US 2019 / 0 031 187 A1, US 2021 / 0 078 429 A1, and US 2019 / 0 283 611 A1. Other vehicles are known from DE 195 33 829 C1, EP 2 928 748 B1, DE 10 2014 201 265 A1, DE 11 2020 000 400 T5, EP 3 495 192 A1, DE 10 2013 215 519 A1, and DE 10 2018 207 849 A1.

[0008] The present invention addresses the problem of providing an improved or at least a different embodiment for a generic battery-electric vehicle, which is characterized in particular by high energy efficiency despite boost operation.

[0009] This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject matter of the dependent claims.

[0010] The invention is based on the general idea of ​​not necessarily increasing the available electrical system power to the maximum available system power during boost mode, but rather taking into account current parameters that affect the energy efficiency of increased system power. Instead of the maximum system power, an increased system power adapted to the current situation is then provided, in order to provide the booster function, for example, for an overtaking maneuver. The system power provided in boost mode can be lower than the maximum available system power.

[0011] The invention is based on a motor vehicle designed as a motor vehicle or automobile, which, unlike a motorcycle, has multiple tracks and in which the call-up device is usually designed as an accelerator pedal.

[0012] Specifically, the invention proposes configuring the control device such that, in boost operating mode, it adjusts the level of available system power depending on at least one of the following parameters: current battery charge level, current accelerator pedal position, current temperature of at least one component of the drive device, and current battery temperature. Each of these parameters can thus limit the level of system power available for retrieval in boost operating mode. This enables this booster function, while simultaneously optimizing the energy efficiency of the battery-electric vehicle. This has a beneficial effect on the vehicle's range. Accordingly, battery recharging is postponed, which is beneficial for operating costs and ultimately also for the environment.

[0013] In the present context, the configuration of the control device corresponds to a design and / or programming of the control device, so that the wording “configured” is synonymous with the wording “designed and / or programmed”.

[0014] Of particular importance here is the consideration of the current battery charge level. Advantageously, the control device can be configured so that the boost operating mode can only be selected and / or activated above a predetermined threshold of the battery charge level. In other words, if the current battery charge level is below this threshold, the boost operating mode cannot be activated. This threshold can be higher than another predetermined threshold, above which the maximum available system power for the respective standard operating mode(s) is limited to a predetermined limit.A preferred embodiment is one in which the control device is configured such that, for the respective standard operating mode, the maximum available system power is limited from a first threshold of the battery charge level, and that the boost operating mode can only be selected and / or activated from a second threshold of the battery charge level that is greater than the first threshold. For example, the first threshold can be in a range of 40-60%, preferably 50%, of the maximum battery charging or storage capacity, while the second threshold can be in a range of 60-70%, preferably 65%, of this capacity.

[0015] The control device can be expediently configured such that, in boost operating mode, it takes two or three of the four aforementioned parameters into account for the level of system power provided for call-up. A particularly advantageous embodiment is one in which the control device is configured such that, for boost operating mode, it takes all of the aforementioned parameters into account in order to adjust the level of system power provided for call-up depending on them.

[0016] Components of the drive system whose temperature can be taken into account by the control unit in boost mode to determine the level of system power available include, for example, the respective electric motor and / or an inverter. The inverter, which can particularly be a pulse-controlled inverter, converts the direct current supplied by the battery into the alternating current required to operate the respective electric motor.

[0017] According to another embodiment, the control device can be configured to activate the selected boost operating mode only for a predetermined period of time. This means that the vehicle driver cannot activate the boost operating mode for an indefinite period of time, which increases the service life of the battery and the components of the drive device.

[0018] A particularly advantageous embodiment is one in which the vehicle has a display device that can be recognized or read by the driver and that visually presents information correlated with the boost operating mode. This display device can expediently be arranged in the cockpit of the vehicle in or on an instrument panel. Preferably, the display device can be integrated into an instrument cluster located in the instrument panel and shows the driver at least the current vehicle speed. Information that correlates with the boost operating mode when the boost operating mode is not activated includes, for example, the current availability of the boost operating mode. The current availability of the boost operating mode tells the driver whether the boost operating mode can currently be activated, i.e. whether the vehicle can currently provide additional power, for example for an upcoming overtaking maneuver.Other information that correlates with the boost operating mode, when the boost operating mode is activated, includes, for example, a countdown until the increased system performance can be accessed and / or an indication of the current access to the increased system performance and / or an indication of the remaining time during which the increased performance of the boost operating mode is still available, provided that the boost operating mode is designed to be time-limited.

[0019] In an expedient embodiment, several standard operating modes can be selected. Standard operating modes include, for example, a comfort operating mode, an energy-saving operating mode, and a sport operating mode. According to an advantageous embodiment, the vehicle can have an operating mode selection device or selection device coupled to the control device and operable by the driver, with which the standard operating modes can be selected. In principle, it is conceivable that the boost operating mode can also be selected using the operating mode selection device. However, an embodiment is preferred in which, in addition to the operating mode selection device, the vehicle has a boost operating mode button coupled to the control device and operable by the driver, with which the boost operating mode can be selected.This simplifies the handling and selection of the boost operating mode, allowing it to be activated at short notice, especially by the driver. The control unit can now be configured so that when the boost operating mode button is pressed, it saves and deactivates the currently selected standard operating mode and activates the boost operating mode instead. When the boost operating mode is ended, the control unit deactivates the boost operating mode and reactivates the previously saved standard operating mode. By pressing the boost operating mode button, the boost operating mode is essentially overlaid on the currently active standard operating mode. In particular, the driver no longer has to select and activate the desired standard operating mode again after ending the boost operating mode. This simplifies the use of the boost operating mode and increases convenience.

[0020] An advantageous embodiment is one in which the vehicle has a temperature control device coupled to the control device for cooling and / or heating the battery and / or at least one component of the drive device. The temperature control of the battery optimizes its energy efficiency. The cooling and / or heating of components of the drive device, such as the respective electric motor and / or an inverter, increases the service life of the respective component. The control device can now be configured such that, in order to activate the boost operating mode, it controls the temperature control device to increase the cooling and / or heating power. In particular, this can proactively counteract additional heat development that is expected when the increased system power is called upon.

[0021] According to the invention, a race start operating mode can also be selected for maximum acceleration of the vehicle from a standstill. The race start operating mode or launch control mode is provided in addition to the respective standard operating mode and in addition to the boost operating mode. In particular, the race start operating mode is not a standard operating mode. The race start operating mode serves to accelerate the vehicle to the maximum from a standstill, for example, until a predetermined maximum speed and / or a maximum time period for the starting process is reached. The control device can expediently be configured such that, when the race start operating mode is activated, it provides a maximum power for call-up that is higher than the maximum callable system power of each standard operating mode.Furthermore, the control device can be configured so that the maximum system power available in boost mode is greater than the maximum system power available in any standard operating mode and less than the maximum power available in race start mode. In other words, the maximum system power available for boost mode always remains below the system power available in race start mode. This protects the drive system and the battery during boost mode.

[0022] Advantageously, the control device can be configured such that the race start operating mode can only be selected and / or activated above a predetermined threshold of the battery charge level. In other words, if the battery charge level is below this threshold, the race start operating mode cannot be activated. This threshold can be greater than another predetermined threshold above which the boost operating mode can be selected and / or activated. This other threshold can, in turn, be greater than another threshold above which the maximum available system power for the respective standard operating mode(s) is limited to a predetermined limit.An embodiment is preferred in which the control device is configured such that for the respective standard operating mode, the maximum retrievable system power is limited from a first threshold value of the battery charge state, such that the boost operating mode can only be selected and / or activated from a second threshold value of the battery charge state that is greater than the first threshold value, and such that the race start operating state can only be selected and / or activated from a third threshold value that is greater than the second threshold value. For example, the third threshold value can be in a range of 85-95%, preferably 90%, of the maximum charging or storage capacity of the battery. The maximum power can expediently be constant. A maximum system power dependent on the battery charge state can be above the maximum power from the third threshold value.

[0023] According to another embodiment, the vehicle can have at least one noise generator coupled to the control device for generating interior noises and / or exterior noises that correlate with the current vehicle performance. Interior noises are radiated into the vehicle interior, so that they are audible to the driver and every other occupant. Exterior noises, on the other hand, are radiated into the vehicle's surroundings, so that they are audible there, particularly to passersby. The control device can expediently be configured such that, in boost operating mode, it controls the noise generator to adapt the interior noises and / or exterior noises to the boost operating mode. For example, the interior noises and / or exterior noises can be adapted to the boost operating mode in terms of volume, frequency, and / or noise type. The temporary simulation of a racing car is conceivable.

[0024] In another embodiment, the vehicle can have interior lighting coupled to the control device for illuminating the vehicle interior. The interior lighting should not be confused with reading lighting, mirror lighting, or the like, but rather corresponds to ambient lighting that sets colorful design accents in the vehicle interior. The control device can then be expediently configured such that, in boost operating mode, it controls the interior lighting to adapt the lighting of the vehicle interior to the boost operating mode. For example, the brightness and / or color of the lighting of the vehicle interior can be adapted to the boost operating mode. For example, the interior lighting can change from a muted blue, which is present in the respective standard operating mode, to a bright red for the boost operating mode.

[0025] Furthermore, the control device can be configured so that in boost operating mode - it controls the drive device and / or the battery to enable a higher system power, and / or - activates a specific high-performance discharge map for battery discharge, which allows the battery to be discharged more deeply than in the standard operating modes, and / or - switches the entire drive train of the vehicle to maximum performance, which includes the respective electric motor, the inverter, the battery, the temperature control device, a chassis of the vehicle and electronic stabilization devices.

[0026] Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures based on the drawings.

[0027] It is understood that the features mentioned above and those to be explained below can be used not only in the respective combinations specified, but also in other combinations or on their own, without departing from the scope of the invention. Components mentioned above and those to be mentioned below of a higher-level unit, such as a device, a device, or an arrangement, which are designated separately, may form separate parts or components of this unit or be integral areas or sections of this unit, even if this is shown differently in the drawings.

[0028] Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

[0029] They show, schematically, Fig. 1 a highly simplified, circuit diagram-like schematic diagram of a vehicle, Fig. 2 a performance diagram for the vehicle.

[0030] Accordingly Fig. 1, a battery-electric vehicle 1 comprises an electric drive device 2, which serves to drive the vehicle 1 and which has at least one electric motor 3 for this purpose. In the example of Fig. 1, the drive device 2 has, purely by way of example, four electric motors 3, each of which is assigned to a wheel 4 of the vehicle 1. It is clear that, in another embodiment, the vehicle 1 can also operate with a single electric motor 3 in the drive device 2. The vehicle 1 also has a battery 5, which serves to supply the drive device 2 with electrical energy and which stores electrical energy for this purpose. For this purpose, the battery 5 is connected to the respective electric motor 3, in particular via an inverter 6. Corresponding lines are designated 7 and 8. The lines 7 and 8 represent lines for power transmission and signal transmission.

[0031] The vehicle 1 is also equipped with a control device 9, which serves to control the drive device 2. For this purpose, the control device 9 is in the example of the Fig. 1 is coupled to the inverter 6 and to the battery 5 via control lines 10. Data, in particular, is exchanged via these control lines 10. Furthermore, the vehicle 1 typically has an accelerator pedal 11 that can be adjusted by the driver and is coupled to the control device 9 via another control line 10. The accelerator pedal 11 serves to call up a driving power and, in this respect, corresponds to a call-up device or throttle.

[0032] The control device 9 is now configured to implement several operating modes selectable by the driver. Typically, several standard operating modes, such as a comfort mode, an energy-saving mode, and a sport mode, as well as a boost operating mode, are selectable. The control device 9 is configured to provide a higher available electrical system power in the boost operating mode than in the standard operating modes. Consequently, a higher driving performance can be accessed via the accelerator pedal 11 in the boost operating mode than in the standard operating modes. The boost operating mode can be used, in particular, for overtaking.The control device 9 is also configured such that, in boost operating mode, it does not set the level of available system power to a predetermined value, and in particular not to the maximum available system power, but rather sets the level of available system power in boost operating mode as a function of at least one parameter. For example, in boost operating mode, the control device 9 can take into account a current battery charge state SOC, where SOC stands for State Of Charge. The battery charge state SOC represents the charging or storage capacity of the battery 5. The battery charge state SOC is shown in the diagram in FIG. Fig. 2 is plotted on the abscissa and ranges from 0% to 100%. At 100%, the battery 5 is full. Additionally or alternatively, the control device 9 can take into account the current accelerator pedal position for the boost operating mode. Additionally or alternatively, the control device 9 can take into account the current temperature of at least one component of the drive device 2 in the boost operating mode. For example, the control device 9 can take into account the temperature of the respective electric motor 3 and / or the temperature of the inverter 6. Corresponding temperature sensors for detecting the current temperature at the respective electric motor 3 or at the inverter 6 are provided in Fig. 1 not shown. Additionally or alternatively, the control device 9 can take into account the current temperature of the battery 5 in boost mode. Here, too, corresponding temperature sensors for detecting the battery temperature are Fig. 1 not shown.

[0033] According to Fig. 1, the vehicle 1 can have a display device 12 that can be recognized or read by the driver, which displays information correlated with the boost operating mode and is coupled to the control device 9, e.g., via a control cable 10. The display device 12 can, in particular, be integrated into an instrument cluster located in the instrument panel of the vehicle 1 in the cockpit or in the vehicle interior. The information is displayed visually. When the boost operating mode is not activated, the display device 12 can, for example, display information about whether the boost operating mode is currently available at all, i.e., whether it can currently be activated by the driver or not.When the boost operating mode is activated, a countdown can be displayed on the display device 12, for example, as information about the boost operating mode. This countdown indicates the time until the increased system power is available for the boost operating mode. It is also conceivable for the display device 12 to display the current status regarding the availability of the increased system power during the boost operating mode. It is also conceivable that, in an embodiment in which the control device 9 provides the boost operating mode only for a predetermined period of time, the time remaining in the boost operating mode during which the increased system power is still available is displayed on the display device 12.

[0034] If several standard operating modes are selectable, the vehicle 1 can have an operating mode selection device 13 coupled to the control device 9 and operable by the driver, which is also referred to below as selection device 13 for short. Using the selection device 13, the driver can select the desired standard operating mode. In addition to the selection device 13, the vehicle 1 can be equipped with a boost operating mode button 14, which is referred to below as booster button 14 for short. The booster button 14 is coupled to the control device 9 and can be operated by the driver. This allows the driver to select or activate the boost operating mode using the booster button 14.The control device 9 can now be expediently configured such that, upon actuation of the booster button 14, it saves and deactivates the currently selected and set standard operating mode and activates the boost operating mode. To terminate the boost operating mode, the control device 9 is configured such that it deactivates the boost operating mode and reactivates the previously saved standard operating mode. The selection device 13 and the booster button 14 can be coupled to the control device 9, for example, via control lines 10.

[0035] The vehicle 1 can also be equipped with a temperature control device 15 for cooling and / or heating the battery 5 and / or at least one component of the drive device 2. The temperature control device 15 can cool or heat depending on the operating temperature, ambient temperature, and operating state in order to improve the performance and / or service life of the components. Purely by way of example, Fig. 1, the temperature control device 15 is merely coupled to the battery 5 for heat transfer. It is clear that the temperature control device 15 can instead or additionally also be coupled to the respective electric motor 3 and / or to the inverter 6 for heat transfer. The control device 9 can now expediently be configured such that, in order to activate the boost operating mode, it controls the temperature control device 15 to increase the cooling capacity and / or heating capacity of the respective component. For example, the battery 5 is cooled more intensively for the boost operating mode. Additionally or alternatively, the respective electric motor 3 and / or the inverter 6 can also be cooled more intensively.

[0036] The vehicle 1 can also be equipped with at least one noise generator 16 for generating interior noises and / or exterior noises that correlate with the current vehicle performance. The noise generator 16 is coupled to the control device 9, for example, via a control cable 10. The control device 9 can be configured to control the noise generator 16 in boost mode to adapt the interior noises and / or exterior noises to the boost mode. For example, the interior noises and exterior noises can be increased in volume and frequency.

[0037] The vehicle 1 can also be equipped with an interior lighting system 17, which is coupled to the control device 9, for example, via a control cable 10. The interior lighting system 17 serves to illuminate the vehicle interior. In this context, an interior lighting system 17 is not understood as a reading light, but rather as ambient lighting that does not distract or disturb the driver. The control device 9 is expediently configured such that, in boost operating mode, it controls the interior lighting system 17 to adapt the lighting of the vehicle interior to the boost operating mode. For example, the brightness and color of the lighting of the vehicle interior can be changed for this purpose.

[0038] The vehicle 1 can also be equipped with a race start operating mode. The race start operating mode differs from the standard operating modes and the boost operating mode. The control device 9 can now be configured such that, when the race start operating mode is activated, it provides a predetermined maximum power for call-up that is higher than the maximum call-up system power of each standard operating mode. In the diagram of the Fig. 2 shows the system power kW. Fig. 2, a curve K represents the maximum available system power as a function of the battery state of charge SOC. It can be seen that the maximum system power can be provided in all operating modes up to a first threshold value S1 of the battery state of charge SOC. This first threshold value S1 is in the example of the Fig. 2 at 50%. Above this first threshold S1 of the battery state of charge SOC, the system power available in the standard operating modes is limited. This limitation is set to a first constant limit G1, which is shown in the diagram of the Fig. 2 is formed by a straight line.

[0039] In Fig. 2 also shows a second limit value G2 and a third limit value G3, which are both constant. The second limit value G2 is greater than the first limit value G1 and the third limit value G3 is greater than the second limit value G2. Starting from a second threshold value S2, which is shown in Fig. 2 is purely exemplary at 65% of the battery state of charge SOC, the system power provided in boost mode is limited to the second limit value G2. From a third threshold value S3, which in the example of Fig. 2 is at 90% of the battery charge level, the maximum power provided in race start operating mode is limited to the third limit G3.

[0040] The control device 9 is further configured such that, starting at the first threshold value S1, the maximum system power available in boost operating mode is greater than the maximum system power available in each standard operating mode, while starting at the second threshold value S2, it is smaller than the maximum power available in race start operating mode. Fig. 2, an arrow 18 represents a power jump that can be realized starting from the first threshold value S1 for each standard operating mode in boost mode. Starting from the second threshold value S3, this power jump 18 is limited by the difference between the second limit value G2 and the first limit value G1. In the example of Fig. 2, the second limit G2 lies exactly in the middle between the first limit G1 and the third limit G3.

Claims

[1] Battery electric vehicle (1), in particular passenger car, - with an electric drive device (2) for driving the vehicle (1), which has at least one electric motor (3), - with an electrical energy storing battery (5) for supplying the drive device (2) with electrical energy, - with a control device (9) for controlling the drive device (2), - with a call-up device designed as an accelerator pedal (11) for calling up a driving performance, which can be adjusted by the driver and is coupled to the control device, - wherein the control device (9) is configured in such a way that several operating modes selectable by the driver can be implemented, - wherein at least one standard operating mode and one boost operating mode are selectable, - wherein the control device (9) is configured such that it provides a higher retrievable electrical system power in the boost operating mode than in the respective standard operating mode, so that a greater driving power can be retrieved via the retrieval device in the boost operating mode than in the respective standard operating mode, - wherein the control device (9) is configured such that, in boost operating mode, it sets the level of the retrievable system power as a function of at least one of the following parameters: current battery state of charge (SOC), current accelerator pedal position, current temperature of at least one component of the drive device (2), current temperature of the battery (5), characterized by , - that a race start operating mode can also be selected for maximum acceleration of the vehicle (1) from a standstill, - that the control device (9) is configured such that, when the race start operating mode is activated, it provides a maximum power for retrieval which is higher than the maximum retrievable system power of each standard operating mode, - that the control device (9) is configured such that the maximum system power available in the boost operating mode is greater than the maximum system power available in each standard operating mode and is less than the maximum power available in the race start operating mode. [2] Vehicle (1) according to claim 1, characterized by , - that the control device (9) is configured so that - that for the respective standard operating mode, the maximum available system power is limited from a predetermined first threshold value (S1) of the battery state of charge (SOC), and - that the boost operating mode can only be selected and / or activated from a predetermined second threshold value (S2) of the battery state of charge (SOC) which is greater than the first threshold value (S1). [3] Vehicle (1) according to claim 2, characterized by , - that the control device (9) is configured so that - that the race start operating mode can only be selected and / or activated from a predetermined third threshold value (S3) of the battery state of charge (SOC) which is greater than the further threshold value (S2). [4] Vehicle (1) according to claim 3, characterized by , - that the control device (9) is configured so that - that for the respective standard operating mode, the maximum system power that can be accessed from the first threshold value (S1) of the battery state of charge (SOC) is limited to a first limit value (G1), - that for the boost operating mode, the maximum system power that can be accessed from the second threshold value (S2) of the battery state of charge (SOC) is limited to a second limit value (G2) that is greater than the first limit value (G1), - that for the race start operating mode, the maximum power delivered from the third threshold (S3) of the battery state of charge (SOC) is limited to a third limit value (G3) which is greater than the second limit value (G2). [5] Vehicle (1) according to claim 1, characterized by , - that the control device (9) is configured such that, in boost operating mode, it sets the level of the retrievable system power as a function of at least two or at least three or each of the following parameters: current battery charge state, current accelerator pedal position, current temperature of at least one component of the drive device (2), current temperature of the battery (5), and / or - that the at least one component of the drive device (2) whose temperature is taken into account by the control device (9) in the boost operating mode is the respective electric motor (3) of the drive device (2) and / or an inverter (6), and / or - that the control device (9) is configured to activate the selected boost operating mode only for a predetermined period of time. [6] Vehicle (1) according to one of claims 1 to 5, characterized by , - that the vehicle (1) has a display device (12) which is recognizable by the driver and which shows information correlated with the boost operating mode, for example, when the boost operating mode is not activated, a current availability of the boost operating mode and / or when the boost operating mode is activated, a countdown until the increased system power is available and / or when the boost operating mode is activated, an indication of the current retrieval of the increased system power. [7] Vehicle (1) according to one of claims 1 to 6, characterized by , - that several standard operating modes can be selected, - that the vehicle (1) has an operating mode selection device (13) coupled to the control device (9) and operable by the driver, with which the standard operating modes can be selected, - that the vehicle (1), in addition to the operating mode selection device (13), has a boost operating mode button (14) which is coupled to the control device (9) and can be actuated by the driver and with which the boost operating mode can be selected, - that the control device (9) is configured such that when the boost operating mode button (14) is pressed, it stores and deactivates the currently selected standard operating mode and activates the boost operating mode, and when the boost operating mode is ended, it deactivates the boost operating mode and reactivates the stored standard operating mode. [8] Vehicle (1) according to one of claims 1 to 7, characterized by , - that the vehicle (1) has a temperature control device (16) coupled to the control device (9) for cooling and / or heating the battery (5) and / or at least one component of the drive device (2), - that the control device (9) is configured such that, in order to activate the boost operating mode, it controls the temperature control device (15) to adjust the cooling and / or heating output. [9] Vehicle (1) according to one of claims 1 to 8, characterized by , - that the vehicle (1) has at least one noise generator (16) coupled to the control device (9) for generating interior noises and / or exterior noises correlating with the current vehicle performance, - that the control device (9) is configured such that in the boost operating mode it controls the noise generator (16) to adapt the interior noise and / or exterior noise, for example with regard to volume and / or frequency and / or type of noise, to the boost operating mode. [10] Vehicle (1) according to one of claims 1 to 9, characterized by , - that the vehicle (1) has an interior lighting (17) coupled to the control device (9) for illuminating a vehicle interior, - that the control device (9) is configured such that in the boost operating mode it controls the interior lighting (17) to adapt the lighting of the vehicle interior, for example with regard to brightness and / or color, to the boost operating mode.

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