MOTOR VEHICLE, ESPECIALLY COMMERCIAL VEHICLE

Description

[0001] The invention relates to a motor vehicle according to the preamble of patent claim 1.

[0002] DE 10 2012 220 562 A1 discloses an electric drive for a vehicle, comprising an electric motor as the drive and a two-speed planetary gear with two shifting elements and a downstream reduction gear as the output. Furthermore, it is provided that the planetary gear is coupled to the drive and output in such a way that the first gear is designed as a direct gear. The object of the present invention is to provide a motor vehicle with a particularly advantageous electric drive. This object is achieved by a motor vehicle having the features of patent claim 1. Advantageous embodiments with expedient further developments of the invention are specified in the remaining claims.

[0003] From DE 10 2018 130 120 A1 a multi-stage planetary gear for an electric drive of a motor vehicle is known, which has a first and a second gear stage.

[0004] The invention relates to a motor vehicle, which is preferably designed as a motor vehicle. In particular, the motor vehicle can be designed as a commercial vehicle and, for example, as a truck. The motor vehicle has a steerable first axle. The feature that the first axle is steerable is to be understood in particular as the following: the first axle has, for example, at least or exactly two first vehicle wheels spaced from one another in the transverse direction of the vehicle and arranged on opposite sides in the transverse direction of the vehicle, which wheels are at least indirectly rotatably connected to a chassis, for example designed as a frame, and are thus rotatable about a wheel rotation axis relative to the chassis. In particular, it is conceivable that a structure such as a driver's cab is held on the chassis, in particular on the frame.The first vehicle wheels, also simply referred to as first wheels, can be pivoted or steered relative to the frame (chassis) about a steering axis extending, for example, at least substantially vertically in the vehicle, thereby enabling lane changes and changes of direction when cornering the motor vehicle. In particular, the first vehicle wheels are connected to a steering handle arranged in the interior of the motor vehicle and configured, for example, as a steering wheel, via which the driver can steer the first vehicle wheels, in particular by turning the steering handle. In this case, the interior is delimited, in particular, by the aforementioned driver's cab.

[0005] The motor vehicle also has a drivable second axle, wherein the axles are also referred to as vehicle axles. The second axle has at least or exactly two second vehicle wheels, which are also simply referred to as second wheels. The second vehicle wheels are spaced apart from one another in the transverse direction of the vehicle and are arranged on sides opposite one another in the transverse direction of the vehicle. The second vehicle wheels are drivable, whereby the motor vehicle as a whole can be driven. In this case, the second vehicle wheels are preferably also connected at least indirectly to the frame so that they can rotate about a second wheel rotation axis. In this case, it is preferably provided that the wheel rotation axes run parallel to one another and in the transverse direction of the vehicle, in particular when the motor vehicle is traveling straight ahead.The vehicle wheels are ground contact elements of the motor vehicle, which can be or is supported on the ground via the ground contact elements in the vertical direction of the vehicle downwards. If the second vehicle wheels, and thus the motor vehicle, are driven while the motor vehicle is supported on the ground via the ground contact elements in the vertical direction of the vehicle downwards, the motor vehicle is driven along the ground and the vehicle wheels roll along the ground.

[0006] The motor vehicle has an electric drive for driving the second axle. In other words, the second axle can be driven by means of the electric drive, in particular purely electrically. In this case, it is to be understood in particular that the second vehicle wheels of the second axle can be driven by means of the electric drive, in particular purely electrically, as a result of which the motor vehicle can be driven, in particular purely electrically. The motor vehicle is therefore preferably designed as a hybrid vehicle or as an electric vehicle. In this case, it is particularly conceivable that, with regard to the first axle and the second axle, only the second axle can be driven by means of the electric drive. This is to be understood in particular that, with regard to the first vehicle wheels and the second vehicle wheels, only the second vehicle wheels of the second axle can be driven by means of the electric drive.

[0007] The motor vehicle also has a traction battery. The traction battery is an electrical energy storage device in or by means of which electrical energy is stored. The traction battery can be used to supply the electric drive with the electrical energy stored in the traction battery, allowing the motor vehicle to be driven, in particular purely electrically.

[0008] The electric drive has a housing and an electric motor, which has a stator and a rotor. The electric motor is also referred to as the first electric motor, so that the stator is also referred to as the first stator and the rotor is also referred to as the first rotor. The first rotor is rotatable about a rotor axis, which is also referred to as the first rotor axis, relative to the stator and relative to the housing. In particular, the rotor can be driven by means of the stator. For example, the stator and the rotor are each arranged at least partially in the housing. Furthermore, it can be provided that the electric motor can provide, via its rotor torque, for the, in particular purely electrical, drive of the second axle and thus of the motor vehicle. In order to drive the rotor and thus drive the second axle by means of the electric motor, the electric motor is supplied with the electrical energy stored in the traction battery.

[0009] The electric drive also has a first planetary gear set arranged coaxially to the rotor axis, which has a first element, a second element, and a third element. One of the elements of the first planetary gear set is a first sun gear, which is also simply referred to as the first sun. One of the elements of the first planetary gear set is a first planet carrier, which is also referred to as the first web. One of the elements of the first planetary gear set is a first ring gear of the first planetary gear set. At least one of the elements of the first planetary gear set is rotatable about a first gear set rotation axis relative to the housing, particularly when the at least one element of the first planetary gear set is not connected in a rotationally fixed manner to the housing. The first gear set rotation axis is also referred to as the main rotation axis, is designed as the main rotation axis, or coincides with a main rotation axis.In the context of the present disclosure, coaxially arranged, rotatable components are understood to mean components or components that are rotatable, in particular, relative to the housing about a respective component rotation axis, such as the first gear set rotation axis, wherein the component rotation axes extend coaxially to one another or coincide. Thus, the feature that the first planetary gear set is arranged or extends coaxially to the rotor axis means that the first gear set rotation axis, and thus the main rotation axis, coincides with the rotor axis. The rotor axis is also referred to as the first rotor rotation axis.

[0010] Furthermore, the feature that the first planetary gear set is arranged coaxially to the rotor axis is preferably understood to mean that the coaxially arranged elements of the first planetary gear set are arranged coaxially to the rotor and thus coaxially to the electric motor.

[0011] The electric drive also has a second planetary gear set, which is arranged coaxially to the rotor axis and thus also coaxially to the first planetary gear set. The second planetary gear set has a fourth element, a fifth element, and a sixth element. One of the elements of the second planetary gear set is a second sun gear, also referred to as a second sun. One of the elements of the second planetary gear set is a second planet carrier, also referred to as a second carrier. One of the elements of the second planetary gear set is a second ring gear. At least one of the elements of the second planetary gear set is rotatable about a second gear set rotation axis relative to the housing, at least when the at least one element of the second planetary gear set is not connected to the housing in a rotationally fixed manner.Because the planetary gear sets are arranged coaxially with each other, the gear set rotation axes coincide, and the gear set rotation axes coincide with the main rotation axis, or the second gear set rotation axis is the main rotation axis, and the first rotor axis also coincides with the second gear set rotation axis. Furthermore, the elements of the second gear set are arranged coaxially with each other.

[0012] The electric motor is also referred to as the first electric motor. When reference is made below to the electric motor, the stator, the rotor, and the rotor shaft, this refers to the first electric motor, the first rotor, the first stator, and the first rotor shaft, unless otherwise stated.

[0013] In the motor vehicle, the first electric motor, the first planetary gear set, and the second planetary gear set are arranged one after the other in the following order in the axial direction of the rotor, i.e., as viewed or seen along the first rotor axis: the electric motor - the first planetary gear set - the second planetary gear set. In other words, in the axial direction of the rotor, the first planetary gear set is arranged after the electric motor, and the second planetary gear set is arranged after the first planetary gear set. In other words, again in the axial direction of the rotor, i.e., as viewed along the first rotor axis, the first planetary gear set follows the rotor, and the second planetary gear set follows the first planetary gear set, in each case at least partially, in particular at least predominantly, and thus at least more than half, or preferably completely.Since the rotor rotation axis coincides with the main rotation axis, the axial direction of the rotor and thus of the electric motor corresponds to the axial direction of the respective planetary gear set.

[0014] In order to realize a particularly advantageous and particularly compact design of the electric drive and to advantageously minimize the complexity of the electric drive, the invention provides that in the vehicle's longitudinal direction, i.e., viewed in the longitudinal direction of the motor vehicle, the first axle, the traction battery, the second axle, and the electric drive are arranged one after the other or consecutively in the following order: the first axle - the traction battery - the second axle - the electric drive. The vehicle's longitudinal direction coincides with its forward direction of travel when the motor vehicle is driven straight ahead, i.e., when not cornering.In particular, it is provided that the vehicle longitudinal direction runs perpendicular to the aforementioned vehicle transverse direction, so that, in particular when the motor vehicle is traveling straight ahead, the respective wheel rotation axis runs perpendicular to the vehicle longitudinal direction.

[0015] Furthermore, the invention provides that the housing is at least substantially rigidly connected to the frame of the motor vehicle. This means that the housing is connected to the frame, bypassing the or all of the vehicle axles of the motor vehicle, i.e. is held on the frame. In other words, the housing is not axle-fixed, i.e. is not held on the frame via one of the axles, but rather the housing is fixed to the frame. Thus, the respective vehicle wheel of the respective axle can perform compression and rebound movements relative to the frame, in particular in the vertical direction of the vehicle, without the housing moving along with the respective axle or with the respective vehicle wheel relative to the frame. Thus, the respective vehicle wheel also performs the compression and rebound movements relative to the housing.In particular, the housing is at least substantially directly connected to the frame. It is conceivable that the housing is elastic and thus vibration-damped, i.e., held on the frame via at least one elastically deformable bearing element made, for example, of rubber. However, the housing is not held on the frame via one of the axles, so that, for example, a force path, via which forces can be transmitted between the housing and the frame, runs from the housing to the frame or vice versa, and does not run over any axle of the motor vehicle.

[0016] Furthermore, the invention provides that the electric drive has an angular drive, which can be driven in particular by the rotor, so that the second vehicle wheels of the drivable or driven second axle can be driven by the rotor and thus by the electric motor via the angular drive. The angular drive is to be understood in particular that a torque deflection of, for example, at least 70 degrees, in particular at least 80 degrees and very particularly 90 degrees, can be effected by means of the angular drive. This is to be understood in particular as the following: The electric motor can provide torques for driving the second vehicle wheels via the rotor, wherein the respective torque provided by the electric motor via the rotor and intended to drive the second axle or the second vehicle wheels is also referred to as drive torque or drive torque.The respective drive torque is or can be transmitted or is transmitted via a torque transmission path from the rotor to the second axle and thus to the respective second vehicle wheel of the second axle. The angular drive is arranged in the torque transmission path running from the rotor to or onto the second axle. By means of the angular drive, the respective drive torque running along the torque transmission path is redirected, specifically, as described above, preferably by at least 70 degrees, in particular at least 80 degrees, and most particularly at least or exactly 90 degrees.This means, in particular, that a first sub-region of the torque transmission path and a second sub-region of the torque transmission path run obliquely, in particular perpendicularly, to one another and thereby enclose an angle which is preferably at least 70 degrees, in particular at least 80 degrees and very preferably at least or exactly 90 degrees, wherein in particular the angle is the smallest angle enclosed by the sub-regions. The sub-regions are or can be coupled to one another via the angular drive, in particular permanently, in a torque-transmitting manner, so that, for example, an input of the angular drive is arranged in the first sub-region and an output of the angular drive is arranged in the second sub-region, in particular such that the input and the output are or can be coupled to one another, in particular permanently, in a torque-transmitting manner.For example, the respective drive torque can be introduced into the angular drive via the input of the angular drive, allowing the angular drive to be driven by the rotor. Via its output, the angular drive can provide the torque introduced into the angular drive or an additional torque resulting from the angular drive and transmit it to the second axis. The angular drive enables a particularly short length of the electric drive in the axial direction of the rotor and thus of the electric drive as a whole.

[0017] Furthermore, according to the invention, a cardan shaft is provided, which is arranged, for example, in the second sub-region of the torque transmission path. Thus, it is preferably provided that the cardan shaft can be driven by the rotor and thus by the electric motor via the angular drive, so that the second axle can be driven by the angular drive, in particular from the output of the angular drive, via the cardan shaft. One of the elements of the second planetary gear set is or can be coupled in a rotationally fixed manner to an input gear of the angular drive. The input gear is also referred to as the input wheel and is arranged at or in the input of the angular drive. In other words, the input gear is a component of the input of the angular drive, so that, for example, the respective drive torque can be introduced into the angular drive via the input gear. Thus, in particular, the input gear is arranged in the first sub-region.An output gear of the angular drive, whose output gear is also referred to as the output gear, is coupled or can be coupled to an input side of the cardan shaft, in particular in a torque-transmitting manner. The output gear is thus arranged in or on the output of the angular drive. In other words, the output gear of the angular drive is a component of the output of the angular drive, so that the angular drive can provide the drive torque or the respective torque resulting from the drive torque via the output gear, and the respective drive torque can be introduced into the angular drive via the input gear. Thus, for example, the output gear is arranged in the second sub-region.The input side of the cardan shaft is preferably arranged in the second partial area, so that the drive torque provided by the angle drive or further torque can be transmitted to the cardan shaft via the input side of the cardan shaft, and thus can be introduced into the cardan shaft.

[0018] For example, it is provided that the output gear meshes with the input gear, in particular directly. The output gear is drivable by the input gear, so that the drive shaft can be driven by the output gear via its input side. Thus, the drive shaft can be driven by the input gear via the output gear.

[0019] An output side of the propeller shaft is or can be coupled to an axle drive of the second axle. The output side of the propeller shaft is preferably arranged in the second sub-region of the torque transmission path, the output side being drivable from the input side. Thus, the output side can be driven by the output gear via the input side, and the axle drive can be driven by the output side from the input side, so that the axle drive can be driven by the output gear via the propeller shaft, and thus by the angular drive. The axle drive is preferably a differential gear, also simply referred to as a differential, via which the second vehicle wheels can be driven by the propeller shaft, in particular from the output side, in particular even while cornering.As is already sufficiently known from the general state of the art, the axle transmission is preferably designed to allow different speeds of the second vehicle wheels of the second axle when the motor vehicle is cornering, in particular while the second vehicle wheels are coupled to the propeller shaft via the axle transmission in a torque-transmitting manner and are in particular driven by the propeller shaft via the axle transmission in order to thereby drive the motor vehicle.

[0020] In the context of the present disclosure, the feature that two components are connected to one another in a rotationally fixed manner is to be understood as meaning that the components are arranged coaxially to one another and are connected to one another in such a way that they rotate together at the same angular velocity, in particular about a component rotation axis common to the components, in particular relative to the aforementioned housing. The feature that the two components are permanently connected to one another in a rotationally fixed manner is to be understood as meaning that a switching element is not provided which can be switched between a coupling state that connects the components to one another in a rotationally fixed manner and a decoupling state that releases the components for rotation relative to one another, in particular about the component rotation axis. Instead, the components are always or permanently (always) connected to one another in a rotationally fixed manner.The feature that the or two components can be connected to one another in a rotationally fixed manner is understood in particular to mean that the components are assigned a switching element that can be switched between at least one coupling state and at least one decoupling state. In the coupling state, the components are connected to one another in a rotationally fixed manner by means of the switching element. In the decoupling state, the components are decoupled from one another, so that in the decoupling state, the components can be rotated relative to one another, in particular about the component rotation axis.

[0021] The feature that two components are connected to one another in a torque-transmitting manner means that a torque can be transmitted between the components, i.e., that a torque can be transferred from one of the components to the other, so that, for example, one component can drive the other. If the two components are coupled or connected to one another in a torque-transmitting manner, the components do not necessarily have to be arranged coaxially to one another. Components that are connected to one another in a rotationally fixed manner are also coupled to one another in a torque-transmitting manner, although the reverse does not necessarily apply.The feature that two components are permanently connected or coupled to one another in a torque-transmitting manner is to be understood as meaning that a switching element is not provided that can be switched between a coupling state that connects or couples the components to one another in a torque-transmitting manner and a decoupling state in which no torque can be transmitted between the components via the coupling element. Rather, the components are always or permanently connected or coupled to one another in a torque-transmitting manner. Thus, the feature that the or two components can be connected or coupled to one another in a torque-transmitting manner is to be understood in particular as meaning that the components are assigned a switching element that can be switched between at least one coupling state and at least one decoupling state.In the coupled state, the components are connected to each other via the switching element in a torque-transmitting manner, allowing torque to be transmitted between the components via the switching element. Thus, one of the components can drive the other via the switching element. In the uncoupled state, the components are decoupled from each other, preventing torque from being transmitted between the components.

[0022] In this regard and with regard to the angular drive, it can thus be provided, for example, that the output gear and the input gear can be coupled to one another in a rotationally fixed manner. In particular, it is conceivable that the input gear and the output gear are coupled to one another, in particular permanently, in a torque-transmitting manner, in particular such that the input gear meshes, in particular directly, with the output gear. However, since the angular drive effects the previously described torque deflection, in particular such that, for example, the input gear is arranged in the first sub-region and the output gear is arranged in the second sub-region, which runs obliquely or perpendicular to the first sub-region, the output gear and the input gear are not arranged coaxially to one another.For example, the input gear is rotatable about an input gear rotation axis relative to the housing, and the output gear is rotatable about an output gear rotation axis relative to the housing, wherein the output gear rotation axis extends obliquely or perpendicularly to the input gear rotation axis, in particular while the input gear and the output gear are coupled to one another, in particular permanently, in a torque-transmitting manner, in particular meshing directly with one another. It is conceivable that the input gear rotation axis extends in the first subregion or coincides with the first subregion of the torque transmission path, wherein, for example, the output gear rotation axis extends in the second subregion or coincides with the second subregion.By using the angular drive, the electric drive can be installed transversely, i.e. mounted transversely, so that the axial direction of the rotor, i.e. the first rotor axis or the main axis of rotation, runs obliquely or preferably perpendicular to the vehicle's longitudinal direction. In this case, it is particularly conceivable for the first partial area to coincide with the main axis of rotation and thus run obliquely or perpendicular to the vehicle's transverse direction, while it is particularly conceivable for the second partial area to run in the vehicle's longitudinal direction, thus coinciding with the vehicle's longitudinal direction. The respective drive torque can therefore be transmitted particularly advantageously to the second axle via the angular drive and the cardan shaft, and the electric drive can be installed transversely, in particular behind the second axle in the vehicle's longitudinal direction.Furthermore, since the housing and thus the electric drive are not fixed to the axle but to the frame, the housing and the electric drive are not an unsprung mass, but a sprung mass, thus preventing excessive wear. A further advantage of arranging the electric drive longitudinally behind the second axle is that the traction battery can be positioned longitudinally between the first and second axles. This allows for an advantageous size and a particularly high storage capacity of the traction battery.

[0023] For example, the input gear of the angular drive is a ring gear, while the output gear of the angular drive can be a bevel gear. Alternatively or additionally, it is conceivable for a, in particular second, bevel gear to be connected or connectable to the propeller shaft, in particular to the output side of the propeller shaft, in a torque-transmitting, in particular rotationally fixed, manner. Furthermore, it is conceivable for the axle drive to have a, in particular second, ring gear, which is connected or coupled to the second bevel gear in a torque-transmitting manner, in particular such that the second bevel gear meshes with the second ring gear, in particular directly. This makes it possible to achieve a particularly advantageous, compact, and low-wear torque transmission.

[0024] By interconnecting the two planetary gear sets, the length of the electric drive running in the axial direction of the rotor and thus of the entire electric drive can be kept particularly short, allowing for a particularly compact design of the electric drive. This allows the electric drive to be installed or mounted transversely, which is particularly advantageous. Furthermore, this allows the electric drive to be positioned behind the second axle, creating more space for other components between the axles compared to arranging the electric drive in the vehicle's longitudinal direction. Furthermore, at least the following advantages can be realized: Modular design of the electric drive, whereby different vehicle types, tonnages and / or axles can be electrified, in particular in such a way that the motor vehicle can be designed as a pure electric vehicle or as a hybrid vehicle. The complexity of the electric drive can be kept particularly low by installing the electric drive transversely and using the electric drive as a rear engine. Greater variability at low costs in development, production and maintenance or repair.

[0025] In an advantageous embodiment of the invention, the output gear of the angular drive is, in particular permanently, rotationally fixedly coupled, i.e., connected, to a first gear of a spur gear stage. This enables particularly efficient operation, and a particularly compact design of the electric drive can be achieved. A particularly great advantage of this embodiment is that a particularly advantageous overall transmission ratio of the electric drive can be achieved. Furthermore, the drivable second axis, also referred to as the main drive axis, can be positioned particularly well, in particular relative to components arranged or to be arranged coaxially to the main rotation axis.In particular, an advantageous positioning of the main rotation axis in its installed state in the motor vehicle can be realized, in particular such that the main rotation axis can be arranged as high as possible in the vertical direction of the vehicle and as centrally as possible in the transverse direction of the vehicle between the sides opposite one another in the transverse direction of the vehicle.

[0026] It has proven particularly advantageous if a second gear of the spur gear stage is coupled, in particular permanently, to the input side of the joint source in a rotationally fixed manner. In particular, it is provided that the first gear meshes, in particular directly, with the second gear. This allows for a particularly compact design and particularly efficient operation.

[0027] A further embodiment is characterized in that the electric drive has a first switching element by means of which the third element can be coupled, i.e. connected, to the rotor in a rotationally fixed manner. The first switching element can thus be switched between at least one first coupling state and at least one first decoupling state. For example, the first switching element can be moved, in particular translationally and / or relative to the housing and / or in the axial direction of the rotor, i.e. along the rotor axis or along a direction of movement parallel to the rotor axis, between at least one first coupling position and at least one first decoupling position. The first coupling position brings about the first coupling state and the first decoupling position brings about the first decoupling state.In the first coupling state, i.e., in the first coupling position, the third element is rotationally fixedly coupled, i.e., connected, to the rotor by means of the first switching element. However, in the first uncoupling state, i.e., in the first uncoupling position, the first switching element releases the third element for rotation about the main rotation axis relative to the rotor.

[0028] Furthermore, a second switching element is provided, by means of which the third element can be coupled, i.e. connected, to the housing in a rotationally fixed manner. The second switching element can thus be switched between at least one second coupling state and at least one second decoupling state. In particular, the second switching element can be moved, in particular translationally and / or relative to the housing and / or in the axial direction of the rotor, i.e. along the rotor axis or along the previously described direction of movement, between at least one second coupling position and at least one second decoupling position. The second coupling position effects the second coupling state, and the second decoupling position effects the second decoupling state. In the second coupling state, the third element is coupled, i.e. connected, to the housing in a rotationally fixed manner by means of the second switching element.In the second decoupling state, the second switching element releases the third element for rotation about the main rotation axis relative to the housing.

[0029] Furthermore, a third switching element is preferably provided, by means of which the first element can be coupled, i.e. connected, to the rotor in a rotationally fixed manner. The third switching element can be switched, for example, between at least one third coupling state and at least one third decoupling state. In particular, the third switching element can be moved, for example, in particular translationally and / or relative to the housing and / or in the axial direction of the rotor, thus along the rotor axis, between at least one third coupling position bringing about the third coupling state and at least one third decoupling position bringing about the third decoupling state. In the third coupling state, the first element is coupled to the rotor in a rotationally fixed manner by means of the third switching element. In the third decoupling state, the third switching element releases the first element for rotation about the main rotation axis relative to the rotor.

[0030] In addition, a fourth switching element is preferably provided, by means of which the first element can be coupled to the housing in a rotationally fixed manner. In this case, the fourth switching element can, for example, be switched between a fourth coupling state and a fourth decoupling state. In particular, the fourth switching element can be moved, for example translationally and / or relative to the housing and / or in the axial direction of the rotor, between at least one fourth coupling position bringing about the fourth coupling state and at least one fourth decoupling position bringing about the fourth decoupling state. In the fourth coupling state, the first element is coupled to the housing in a rotationally fixed manner by means of the fourth switching element. In the fourth decoupling state, the fourth switching element releases the first element for rotation about the main axis of rotation relative to the housing.The fourth switching element is arranged on a side of the electric motor facing away from the first planetary gear set in the axial direction of the rotor.

[0031] Furthermore, a fifth switching element is preferably provided, by means of which the second element can be coupled, i.e. connected, to the fourth element in a rotationally fixed manner. Thus, for example, the fifth switching element can be switched between a fifth coupling state and a fifth decoupling state. For example, the fifth switching element can be moved, in particular relative to the housing and / or translationally and / or in the axial direction of the rotor, between at least one fifth coupling position bringing about the fifth coupling state and at least one fifth decoupling position bringing about the fifth decoupling state. In the fifth coupling state, the second element is coupled, i.e. connected, to the fourth element in a rotationally fixed manner by means of the fifth switching element. In the fifth decoupling state, the fifth switching element releases the second element for a rotation, in particular about the main axis of rotation relative to the fourth element.

[0032] The fifth element is or can be coupled in a rotationally fixed manner to the input gear of the angular drive. By using the shifting elements, particularly advantageous drivability and thus particularly efficient operation can be achieved in a particularly space-saving manner. In particular, multiple, particularly switchable, gears of the electric drive can be realized in a particularly space-saving manner, with the gears differing from one another, for example, in their respective transmission ratios.

[0033] In a further, particularly advantageous embodiment of the invention, the fifth switching element is designed to couple the second element in a rotationally fixed manner to the fourth element and in a rotationally fixed manner to the sixth element. For example, the fifth switching element can be switched in a sixth coupling state. For example, the fifth switching element can also be moved, in particular relative to the housing and / or translationally and / or in the axial direction of the rotor, into at least one sixth coupling position bringing about the sixth coupling state. In the sixth coupling state, the second element is rotationally fixedly coupled to the sixth element by means of the fifth switching element. It is conceivable that in the sixth coupling state the fifth switching element releases the fourth element for rotation, in particular about the main axis of rotation relative to the second element and / or relative to the sixth element.Furthermore, it is conceivable that in the fifth coupling state, the fifth switching element releases the sixth element for rotation, in particular about the main axis of rotation relative to the second element and relative to the fourth element. Furthermore, it is conceivable, for example, that in the fifth decoupling state, the fifth switching element releases the second element for rotation, in particular about the main axis of rotation relative to the fourth element and relative to the sixth element. Furthermore, it is conceivable that the fifth decoupling state corresponds to the sixth coupling state. Furthermore, for example, the fifth switching element can be switched to a seventh coupling state. For example, the fifth switching element can be moved into at least one seventh coupling position, bringing about the seventh coupling state, in particular relative to the housing and / or translationally and / or in the axial direction of the rotor.In the seventh coupling state, for example, both the fourth element and the sixth element are simultaneously connected to the second element in a rotationally fixed manner by means of the fifth switching element. This allows for particularly advantageous drivability in a particularly space-saving manner.

[0034] Alternatively, the use of a further switching element provided in addition to the first, second, third, fourth and fifth switching element would be conceivable, wherein, for example, the second element can be coupled to the fourth element in a rotationally fixed manner by means of the fifth switching element, and wherein the second element can be coupled or connected to the sixth element in a rotationally fixed manner by means of the switching element.

[0035] A further embodiment is characterized by a sixth switching element, by means of which the sixth element can be coupled to the housing in a rotationally fixed manner. Thus, for example, the sixth switching element can be switched between at least one eighth coupling state and at least one seventh decoupling state. For example, the sixth switching element can be moved, in particular translationally and / or relative to the housing and / or in the axial direction of the rotor, between at least one eighth coupling position, which effects the eighth coupling state, and at least one seventh decoupling position, which effects the seventh decoupling state. In the eighth coupling state, the sixth element is coupled to the housing in a rotationally fixed manner by means of the sixth switching element, and is thus fixed to the housing in a rotationally fixed manner. In the seventh decoupling state, the sixth switching element releases the sixth element for rotation, in particular about the main axis of rotation relative to the housing.This allows particularly efficient operation to be achieved in a space-saving manner.

[0036] In order to be able to keep the number of parts, costs, weight and installation space requirements particularly low, a further embodiment of the invention provides that the third switching element and the fourth switching element are arranged axially adjacent, i.e. in the axial direction of the rotor, and are combined to form a coupling switching element with at least two switching positions. In particular, it is conceivable that the third switching element and the fourth switching element are formed integrally with one another. Thus, for example, the third coupling position corresponds to the fourth decoupling position or the third coupling state corresponds to the fourth decoupling state, and preferably the fourth decoupling position corresponds to the fourth coupling position or the third decoupling state corresponds to the fourth coupling state.Thus, for example, a first of the switching positions is the third coupling position or the fourth decoupling position, and a second of the switching positions is, for example, the fourth coupling position or the third decoupling position.

[0037] In a further, particularly advantageous embodiment of the invention, there is a seventh switching element by means of which the fourth element can be coupled to the housing in a rotationally fixed manner. Thus, for example, the seventh switching element can be switched between a tenth coupling state and an eighth decoupling state. For example, the seventh switching element can be moved, in particular translationally and / or relative to the housing and / or in the axial direction of the rotor, between at least one tenth coupling position causing the tenth coupling state and at least one eighth decoupling position causing the eighth decoupling state. In the tenth coupling state, the fourth element is coupled to the housing in a rotationally fixed manner by means of the seventh switching element, i.e., is fixed to the housing in a rotationally fixed manner. In the eighth decoupling state, the seventh switching element releases the fourth element for rotation, in particular about the main rotation axis relative to the housing.This allows particularly advantageous drivability to be achieved in a particularly space-saving manner.

[0038] Within the scope of the present disclosure, the ordinal numerals used in the present description and also referred to as ordinals, such as "first," "first," "second," "second," "third," "third," "fourth," "fourth," "fifth," "fifth," "sixth," "sixth," "seventh," "seventh," etc., are not to be understood as ordinal numerals per se, unless otherwise stated, which indicate a sequence or a number. Rather, the ordinal numerals used in the description are, unless otherwise stated, to be regarded as adjectives in order to distinguish the terms associated with the respective ordinal numerals, such as "switching element," "coupling state," "decoupling state," "coupling position," "decoupling position," etc., from one another, thus enabling them to be conceptually separated and thus enabling clear reference to these terms associated with the ordinal numerals.

[0039] A further embodiment is characterized in that the fourth shifting element, the electric motor, the first planetary gear set, the second planetary gear set, the input gear, and the seventh shifting element are arranged one after the other or consecutively in the direction of the drivable second axis (main drive axis), and in particular along the axial direction of the rotor, in the following order: the fourth shifting element - the electric motor - the first planetary gear set - the second planetary gear set - the input gear - the seventh shifting element. This allows for a particularly space-efficient design of the electric drive.

[0040] In a further, particularly advantageous embodiment of the invention, the motor vehicle comprises a second electric motor arranged coaxially to the electric motor, which second electric motor has a second stator and a second rotor rotatable relative to the second stator. In particular, the second rotor is rotatable relative to the stator about a second rotor axis, which is also referred to as the second rotor rotation axis. Since the electric motors are arranged coaxially to one another, the rotors are arranged coaxially to one another, so that the rotor axes coincide. The second rotor axis thus coincides with the main axis of rotation, so that the second electric motor or the second rotor is also arranged coaxially to the planetary gear sets. The second rotor is or can be coupled in a rotationally fixed manner to one of the elements of the second planetary gear set. This makes it possible to create a particularly advantageous drive in a space-saving manner.

[0041] It has proven particularly advantageous if the second rotor is coupled or can be coupled in a rotationally fixed manner to the fourth element, whereby particularly good drivability can be achieved in a particularly advantageous, space-saving manner.

[0042] In a further, particularly advantageous embodiment of the invention, the first electric motor, the first planetary gear set, the second planetary gear set, the input gear, and the second electric motor are arranged in the following sequence, viewed in the direction of the drivable second axis and thus, for example, viewed along the axial direction of the rotor: the first electric motor - the first planetary gear set - the second planetary gear set - the input gear - the second electric motor. This allows for a particularly space-efficient design.

[0043] In a further, particularly advantageous embodiment of the invention, the motor vehicle comprises a further electric motor with a further stator and a further rotor, which is arranged coaxially to the first rotor and the planetary gear sets. The further electric motor is thus arranged coaxially to the first electric motor. For example, the further rotor is rotatable about a further rotor axis relative to the further stator. Since the further electric motor is arranged coaxially to the first electric motor and coaxially to the planetary gear sets, the further rotor axis coincides with the first rotor axis and with the main axis of rotation. A third planetary gear set is provided, which has a seventh element, an eighth element, and a ninth element. One of the elements of the third planetary gear set is a third sun gear, which is also referred to as the third sun.One of the elements of the third planetary gear set is a third planet carrier, also called the third carrier. One of the elements of the third planetary gear set is a third ring gear.

[0044] Furthermore, in this embodiment, a fourth planetary gear set is provided, which has a tenth element, an eleventh element, and a twelfth element. One of the elements of the fourth planetary gear set is a fourth sun gear, which is also referred to as the fourth sun. One of the elements of the fourth planetary gear set is a fourth planet carrier, which is also referred to as the fourth carrier. One of the elements of the fourth planetary gear set is a fourth ring gear. For example, the respective planetary gear set has at least one or more planet gears, wherein the respective planet gear is rotatably held on the respective carrier of the respective planetary gear set. In particular, it is provided that the respective planet gear of the respective planetary gear set meshes, on the one hand, in particular directly, with the respective sun of the respective planetary gear set and, on the other hand, in particular directly, with the respective ring gear of the respective planetary gear set.

[0045] Preferably, the second rotor is or can be coupled to the seventh element in a rotationally fixed manner, the eighth element being or can be coupled to the tenth element, in particular in a torque-transmitting or rotationally fixed manner, and the eleventh element being or can be coupled to the input gear of the angular drive in a rotationally fixed manner. This allows a particularly high performance of the electric drive to be achieved in a particularly space-saving manner, so that the electric drive can be used particularly advantageously for weight-intensive motor vehicles and can also drive such weight-intensive motor vehicles effectively and efficiently, in particular purely electrically.

[0046] Finally, it has proven particularly advantageous if, viewed in the direction of the drivable second axis or, in particular, viewed in the axial direction of the rotor, the first electric motor, the first planetary gear set, the second planetary gear set, the input gear of the angular drive, the fourth planetary gear set, the third planetary gear set, and the further electric motor are arranged one after the other in the following order: the first electric motor - the first planetary gear set - the second planetary gear set - the input gear of the angular drive - the fourth planetary gear set - the third planetary gear set - the further electric motor. This allows for a particularly space-efficient electric drive.

[0047] The drawing shows: Fig. 1 is a schematic plan view of a motor vehicle with an electric drive; Fig. 2 is a schematic representation of a first embodiment of the electric drive; Fig. 3 is a schematic representation of a second embodiment of the electric drive; and Fig. 4 is a schematic representation of a third embodiment of the electric drive.

[0048] In the figures, identical or functionally identical elements are provided with the same reference numerals.

[0049] Fig. 1 shows a schematic plan view of a motor vehicle 10, which is preferably designed as a motor vehicle. The motor vehicle 10 is very preferably designed as a commercial vehicle, in particular as a truck. The motor vehicle 10 has a first axle 12, which is also referred to as the first vehicle axle. The first axle 12 is a steerable axle. This means that the first axle 12 has at least or exactly two first vehicle wheels 14, which are also referred to as first wheels. Fig. 1 It can be seen that the vehicle wheels 14 are spaced apart from one another in the vehicle transverse direction and are arranged on opposite sides SE1 and SE2 of the motor vehicle 10 in the vehicle transverse direction. The vehicle transverse direction is in Fig. 1 by a double arrow 16. The vehicle wheels 14 can, in particular jointly, rotate about a respective joint axis relative to a Fig. 1 not shown structure of the motor vehicle 10 and thus steered, whereby lane changes, changes of direction and cornering of the motor vehicle 10 can be effected. In Fig. 1 the vehicle wheels 14 are in their straight-ahead position, by means of which a straight-ahead travel of the motor vehicle 10 is effected. Thus, the motor vehicle 10 can be driven along a straight line with the vehicle wheels 14 in the straight-ahead position. The motor vehicle 10 also comprises a frame 18, which is also referred to as a chassis. For example, the frame 18 is designed as a ladder frame. The aforementioned structure is preferably formed separately from the frame 18 and held on the frame 18. The structure is, for example, a driver's cab which delimits an interior of the motor vehicle 10. In this case, in particular while the motor vehicle 10 is traveling, the driver of the motor vehicle 10 can be in the interior and thus in the structure.

[0050] The motor vehicle 10 also comprises at least or exactly one second axle 20, which is also referred to as the second vehicle axle. Fig. 1 It can be seen that the axles 12 and 20 are arranged one behind the other or one after the other in the vehicle's longitudinal direction, with the vehicle's longitudinal direction in Fig. 1 by a double arrow 22 and perpendicular to the vehicle transverse direction. The second axle 20 has at least or exactly two second vehicle wheels 24, which are also referred to as second wheels. The vehicle wheels 24 are arranged spaced apart from one another in the vehicle transverse direction and are arranged on the respective sides SE1 and SE2 opposite one another in the vehicle transverse direction. Fig. 1 An arrow 27 indicates a forward direction of travel of the motor vehicle 10, which is driven forward along its forward direction of travel or in its forward direction of travel. Relative to the forward direction of travel, which runs parallel to the vehicle's longitudinal direction or coincides with the vehicle's longitudinal direction, the side SE1 is the right side of the motor vehicle 10, so that the side SE2 is the left side of the motor vehicle 10. In the vehicle's longitudinal direction relative to the forward direction of travel, the axle 20 is arranged in the axle 12. The axle 20 is a driven, i.e. drivable axle. This is to be understood in particular as follows: The motor vehicle 10 has an electric drive 26, by means of which the axle 20, i.e. the vehicle wheels 24, can be driven, in particular purely electrically.As a result, the motor vehicle as a whole can be driven, in particular purely electrically, by means of the electric drive 26, wherein the motor vehicle 10 can be designed, for example, as a purely electric vehicle or as a hybrid vehicle.

[0051] The motor vehicle 10 has a traction battery 29, which is arranged, for example, in the vehicle's longitudinal direction between the axles 12 and 20. The traction battery 29 is an electrical energy storage device in which electrical energy is to be stored or is stored. The traction battery 29 is preferably a high-voltage component whose electrical voltage, in particular electrical operating or nominal voltage, is preferably greater than 50 volts, in particular greater than 60 volts, and very preferably amounts to several hundred volts. As will be explained in more detail below, the electric drive 26 can be supplied with the electrical energy stored in the traction battery 29 in order to thereby drive the vehicle wheels 24, in particular purely electrically, for example. In particular, the electrical energy is to be stored or is stored electrochemically in the traction battery 29.

[0052] Out of Fig. 1 It is particularly clearly visible that the electric drive 26 is arranged in the vehicle's longitudinal direction and, in particular, with respect to the forward direction of travel, behind the axle 20, which is arranged behind the axle 12 in the vehicle's longitudinal direction. This allows a particularly large amount of space to be created in the vehicle's longitudinal direction between the axles 12 and 20, in which the traction battery 29 and / or other, further components can be advantageously arranged.

[0053] Fig. 2 shows a first embodiment of the electric drive 26. The electric drive 26 has a Fig. 2 particularly schematically illustrated housing 28 and at least or exactly one electric motor 30, which is also referred to as the first electric motor. The electric motor 30 has a stator 32, which is also referred to as the first stator. In addition, the electric motor 30 has a rotor 34, which is also referred to as the first rotor. The rotor 34 comprises a rotor shaft 36, which is also referred to as the first rotor shaft. In particular, the rotor 34 can be driven by means of the stator 32 and can thereby be rotated about a first rotor axis 38 relative to the housing 28 and relative to the stator 32. The first rotor axis 38, which is also simply referred to as the rotor axis, coincides with a main axis of rotation 40, which will be explained in more detail below.In particular, the electric motor 30 can provide torques as drive torques via its rotor 34 and in particular via the rotor shaft 36, by means of which the vehicle wheels 24 and thus the motor vehicle 10 can be driven, in particular purely electrically.

[0054] The electric drive 26 has a first planetary gear set 42, which is arranged coaxially with the first rotor axis 38 and thus coaxially with the rotor 34 and the electric motor 30. The first planetary gear set 42 has a first element, a second element, and a third element. Fig. 2 In the first embodiment shown, the first element is a first sun gear 44, which is also referred to as the first sun. Furthermore, the second element is a first planet carrier 46, which is also referred to as the first web. The third element is a first ring gear 48. Furthermore, the first planetary gear set 42 comprises first planet gears 50, which are rotatably mounted on the planet carrier 46 and each mesh or engage, in particular directly, with the ring gear 48 on the one hand and with the sun gear 44 on the other hand. At least one of the elements of the planetary gear set 42, in this case the sun gear 44 and the planet carrier 46, can be rotated about a first planetary gear set rotation axis relative to the housing 28 if the at least one element of the planetary gear set 42 is not connected in a rotationally fixed manner to the housing.The first planetary gear set rotation axis coincides with the main rotation axis 40 or is the main rotation axis 40, so that the planetary gear set 42 is arranged coaxially to the electric motor 30.

[0055] The electric drive 26 also has a second planetary gear set 52, which is arranged coaxially with the first rotor axis 38 and thus coaxially with the rotor 34, the electric motor 30, and the first planetary gear set 42. The second planetary gear set 52 has a fourth element, a fifth element, and a sixth element. Fig. 2 In the first embodiment shown, the fifth element is a second sun gear 54, which is also referred to as the second sun. In the first embodiment, the fifth element is a second planet carrier 56, which is also referred to as the second carrier. Furthermore, the sixth element is a second ring gear 58. Furthermore, the second planetary gear set 52 has at least one or more second planet gears 60, which are rotatably held on the second carrier and mesh or engage, on the one hand, in particular directly, with the second ring gear 58 and, on the other hand, in particular directly, with the second sun gear 54. At least one of the elements of the second planetary gear set 52, in this case the sun gear 54 and the planet carrier 56, can be rotated about a second planetary gear set rotation axis relative to the housing 28 when the at least one element of the second planetary gear set 52 is not connected to the housing 28 in a rotationally fixed manner.The second planetary gear set rotational axis coincides with the first planetary gear set rotational axis and thus with the first rotor axis 38 and with the main rotational axis 40, so that the elements of the planetary gear set 52 are arranged coaxially to one another, and the elements of the planetary gear set 42 are arranged coaxially to one another, and the elements of the planetary gear set 52 are arranged coaxially to the elements of the planetary gear set 42, coaxially to the rotor 34 and thus to the rotor shaft 36, and coaxially to the electric motor 30, thus coaxially to the first rotor axis 38. In other words, the planetary gear sets 42 and 45 are arranged coaxially to one another and each coaxially to the electric motor 30.In the axial direction of the rotor 34, that is, along the first rotor axis 38 and thus along the main rotation axis 40, the electric motor 30, the first planetary gear set 42 and the second planetary gear set 52 are arranged one after the other in the following order: electric motor 30 - the first planetary gear set 42 - the second planetary gear set 52.

[0056] When the main rotation axis 40 is mentioned below, this also includes - unless otherwise stated - the first rotor axis 38 and the respective planetary gear set rotation axis, since the main rotation axis 40 coincides with the first rotor axis and the planetary gear set rotation axis.

[0057] Looks particularly good Fig. 2 It can be seen that the rotor axis 38 is perpendicular, i.e. perpendicular, to the Fig. 2 by the double arrow 22, so that the main rotation axis 40 or the first rotor axis 38 runs at least substantially parallel to the vehicle transverse direction (double arrow 16). Thus, a transverse installation of the electric drive 26 is provided. In other words, the electric drive 26 is installed transversely or mounted transversely.

[0058] In order to achieve a particularly compact design and a particularly efficient drive, the first axle 12, the traction battery 29, the second axle 20, and the electric drive 26 are arranged in the following sequence in the vehicle's longitudinal direction: the first axle 12 - the traction battery 29 - the second axle 20 - the electric drive 26. Furthermore, the housing 28 is rigidly connected to the frame 18, bypassing the axles 12 and 20. In other words, the electric drive 26 is not fixed to the axle, i.e., not connected to the frame 18 via one of the axles 12 and 20, and thus not via an axle suspension. Rather, the housing 28 or the electric drive 26 is fixed to the frame. Of course, the term "rigid connection" also includes a slightly damped connection, such as a connection to the frame 18 via possible rubber damping elements.The term "rigid connection" is intended to emphasize that the axle suspension is not effectively arranged between the housing 28 and the frame 18. As a result, the housing 28, together with the frame 18, is sprung relative to the vehicle wheels 14, 24. As a result, when, for example, the vehicle wheels 14 and 24 are driven over uneven ground along which the motor vehicle 10 is driven, compression and rebound movements of the vehicle wheels 14, 24 relative to the frame 18, at least substantially in the vertical direction of the vehicle, do not result in compression and rebound movements of the housing 28 relative to the frame 18. Thus, the housing 28 is not an unsprung mass like, for example, the vehicle wheels 14 and 24, but rather a sprung mass just like the frame 18, so that excessive wear can be avoided.

[0059] Furthermore, the electric drive 26 has an angle drive 62, and the motor vehicle 10 has a Fig. 1 and 2 particularly schematically illustrated drive shaft 64, which extends, for example, from the angle drive 62 in the vehicle's longitudinal direction, i.e. parallel to the vehicle's longitudinal direction or, in the present case, obliquely to the vehicle's longitudinal direction towards the front, and extends towards the drivable axle 20. The angle drive 62 has an input gear 66 and an output gear 68, which meshes, in particular directly, with the input gear 66. In the Fig. 2 In the first embodiment shown, for example, the input gear 66 is a ring gear, and the output gear 68 is, for example, a bevel gear. One of the elements of the second planetary gear set 52 is or can be coupled in a rotationally fixed manner to the input gear 66. In the first embodiment, the input gear 66 is, in particular permanently, rotationally fixedly coupled, i.e., connected, to the planet carrier 56. Thus, the input gear 66 can be driven by the planet carrier 56, so that the output gear 68 can be driven by the planet carrier 56 via the input gear 66.

[0060] The output gear 68 is or can be coupled at least indirectly to an input side E of the propeller shaft 64, in particular in a torque-transmitting manner, so that the propeller shaft 64 can be driven via its input side E by the output gear 68 and thus by the angular drive 62. Thus, the propeller shaft 64 can be driven via the output gear 68 by the input gear 66 and via the latter by the planetary carrier 56. The propeller shaft 64 also has an output side A, which can be driven by the input side E and which can be coupled or is coupled, in particular permanently, in a torque-transmitting manner, in particular in a rotationally fixed manner, to the input side E. In particular, it is provided that the input side E is coupled, in particular permanently, in a torque-transmitting manner, to the output side A. the output side A of the cardan shaft 64 is coupled or can be coupled to an axle gear 70 of the drivable axle 20, which is also referred to as a differential gear or is designed as a differential gear.In particular, it is conceivable that the output side A is or can be coupled, in particular permanently, to the axle drive 70 in a torque-transmitting manner. Thus, the axle drive 70 can be driven from the output side A and, via the output side A, from the input side E. It can be seen that the vehicle wheels 24 can be driven, in particular purely electrically, via the axle drive 70 by the propeller shaft 64 and, via this, by the electric drive 26. The feature that the propeller shaft 64 runs parallel or obliquely to the vehicle's longitudinal direction is to be understood in particular to mean that the axial direction of the propeller shaft 64 runs parallel or obliquely to the vehicle's longitudinal direction.Torques provided by the electric drive 26 via the angle drive 62 for driving the vehicle wheels 24 can be guided forward in the vehicle longitudinal direction via the cardan shaft 64 and thereby to the axle gear 70 and transmitted to the vehicle wheels 24 via the axle gear 70, whereby the vehicle wheels 24 can be driven.

[0061] In the first embodiment, the respective ring gear 48 or 58 can also be rotated about the main rotation axis 40 relative to the housing 28 when it is not connected to the housing 28 in a rotationally fixed manner. In the first embodiment, at least or exactly one spur gear stage 72 is arranged between the input side E of the cardan shaft 64 and the angle drive 62, which spur gear stage has a first gear 74 and a second gear 76. The gears 74 and 76 are preferably spur gears. The gears 74 and 76 mesh directly with one another, i.e., they are directly engaged with one another. The gear 74 is, in particular permanently, coupled to the output gear 68 in a rotationally fixed manner, i.e., connected. The second gear 76 is, in particular permanently, coupled in a rotationally fixed manner to the input side E, that is to say connected, so that the input side E can be driven by the gear 74 via the gear 76, and the gear 76 can be driven by the output gear 68 via the gear 74.

[0062] In the second embodiment, the electric drive 26 has a first switching element S1, by means of which the ring gear 48 can be coupled, i.e. connected, in a rotationally fixed manner to the rotor 34 and thus to the rotor shaft 36. Furthermore, the electric drive 26 has a second switching element S2, by means of which the ring gear 48 can be coupled, i.e. connected, in a rotationally fixed manner to the housing 28. The electric drive 26 also has a third switching element S3, by means of which the sun gear 44 can be coupled, i.e. connected, in a rotationally fixed manner to the rotor 34. The electric drive 26 furthermore comprises a fourth switching element S4, by means of which the sun gear 44 can be coupled, i.e. connected, in a rotationally fixed manner to the housing 28. The fourth switching element S4 and, in the present case, also the third switching element S3 are arranged on a side SE3 of the electric motor 30 facing away from the first planetary gear set 42 in the axial direction of the rotor 34.The electric drive 26 also includes a fifth switching element S5, by means of which the planet carrier 46 can be coupled in a rotationally fixed manner to the second sun gear 54. In the second embodiment, the second planet carrier 56 is or can be coupled, in particular permanently, in a rotationally fixed manner to the input gear 66 of the angular drive 62.

[0063] The fifth switching element S5 is designed to couple the planet carrier 46, in particular simultaneously, in a rotationally fixed manner to the second sun gear 54 and in a rotationally fixed manner to the second ring gear 58. In particular, the fifth switching element S5 can be switched between three switching states, which can also be referred to as coupling states. In a first of the switching states, the second element, i.e., the first planet carrier 46, is rotationally fixedly connected to the fourth element, i.e., the second sun gear 54, by means of the fifth switching element S5, in particular while the fifth switching element S5 releases the sixth element, i.e., the second ring gear 58, for rotation about the main rotation axis 40 relative to the second element and the fourth element.In a second of the switching states, the second element, i.e., the planet carrier 46, is coupled, i.e., connected, in a rotationally fixed manner to the sixth element, i.e., to the second ring gear 58, by means of the fifth switching element S5, while the fifth switching element S5 releases the fourth element, i.e., the second sun gear 54, for rotation about the main rotation axis 40 relative to the second element and the sixth element. In a third of the switching states, the second element, i.e., the first planet carrier 46, is simultaneously coupled or connected in a rotationally fixed manner to the fourth element, i.e., to the second sun gear 54, and in a rotationally fixed manner to the sixth element, i.e., to the ring gear 58, by means of the fifth switching element S5, so that in the third switching state, the second element, the fourth element, and the sixth element are rotationally fixedly connected to one another by means of the fifth switching element S5.Thus, the first switching state and the second switching state can also be regarded as decoupling states, since in the first switching state the sixth element can rotate about the main rotation axis 40 relative to the second element, relative to the fourth element and relative to the sixth element, and since in the second switching state the fourth element can rotate about the main rotation axis 40 relative to the second element and relative to the sixth element.

[0064] The electric drive 26 also comprises a sixth switching element S6, by means of which the sixth element, thus the second ring gear 58, can be coupled, i.e. connected, to the housing 28 in a rotationally fixed manner.

[0065] In the second embodiment, the switching elements S3 and S4 are arranged axially adjacent. This means that the switching elements S3 and S4 are arranged adjacent in the axial direction of the rotor 34, wherein the switching elements S3 and S4 are combined to form a coupling switching element KS. For example, the switching elements S3 and S4 are formed integrally with one another. For example, the switching element S3 is a first part or a first region of the coupling switching element KS, and the switching element S4 is a second part or a second region of the coupling switching element KS. For example, the coupling switching element KS can be switched between a fourth switching state and a fifth switching state.In the fourth switching state, for example, the first element, thus the first sun gear 44, is connected in a rotationally fixed manner to the housing 28 by means of the coupling switching element KS, in particular by means of the fourth switching element S4, and the coupling switching element KS, in particular the switching elements S3 and S4, preferably allows rotation of the rotor 34 about the main rotation axis 40 relative to the first element (44). In the fifth switching element, for example, the first element, thus the first sun gear 44, is coupled in a rotationally fixed manner to the rotor 34 by means of the coupling switching element KS, in particular by means of the third switching element S3, and for example, the coupling switching element KS, in particular the switching elements S3 and S4, allows rotation of the rotor 34 and the sun gear 44, in particular joint rotation about the main rotation axis 40 relative to the housing 28.It is conceivable that the coupling switching element KS or the switching elements S3 and S4 can be switched to a sixth switching state, which is referred to as the neutral state. In the sixth switching state, for example, the coupling switching element KS, in particular the switching elements S3 and S4, allows rotation of the first element (sun gear 44) about the main rotation axis 40 relative to the housing 28 and relative to the motor 34, or vice versa.

[0066] The electric drive 26 also has a seventh shifting element S7, by means of which the fourth element, i.e., the second sun gear 54, can be connected in a rotationally fixed manner to the housing 28. For example, the fourth shifting element S4, the electric motor 30, the first planetary gear set 42, the second planetary gear set 52, the input gear 66, and the seventh shifting element S7 are arranged one after the other, i.e., consecutively, in the following order, as viewed in the direction of the main rotational axis 40 and / or in the axial direction of the electric motor 30 and thus along the main rotational axis 40: The fourth shifting element S4 - the electric motor 30 - the first planetary gear set 42 - the second planetary gear set 52 - the input gear 66 - the seventh shifting element S7.

[0067] By means of the interconnected planetary gear sets 42 and 52 and by means of the shifting elements S1-S7, at least or exactly six gears of the electric drive 26 can be realized. To engage a first of the gears, the rotor 34 is connected in a rotationally fixed manner to the sun gear 44 by means of the coupling shifting element KS, in particular by means of the third shifting element S3. A rotationally fixed connection of the rotor 34 to the planet carrier 46 is omitted, thus the rotor 34 is not connected in a rotationally fixed manner to the planet carrier 46 by means of the shifting element S1. The ring gear 48 is connected in a rotationally fixed manner to the housing 28 by means of the shifting element S2. The planet carrier 46 is connected in a rotationally fixed manner to the sun gear 54 by means of the shifting element S5, in particular while the shifting element S5 releases the ring gear 58 for rotation about the main rotation axis 40 relative to the planet carrier 46 and the sun gear 54, or vice versa.by means of the switching element S6, the planet carrier 56 is connected to the housing 28 in a rotationally fixed manner, and by means of the switching element S7, a rotationally fixed connection of the sun gear 54 to the housing 28 is omitted, i.e. by means of the switching element S7, the sun gear 54 is not connected to the housing 28 in a rotationally fixed manner.

[0068] It is apparent that the previous descriptions, that for example the respective switching element releases one component for a rotation about the main rotation axis 40 relative to another component, can of course also be considered or applied in reverse, so that it can also be understood that the respective switching element releases the other component for a rotation about the main rotation axis 40 relative to the one component.

[0069] In order to engage a second gear, the sun gear 44 is connected in a rotationally fixed manner to the housing 28 by means of the coupling switching element KS, in particular by means of the fourth switching element S4, in particular while the coupling switching element KS enables rotation of the rotor 34 about the main rotation axis 40 relative to the sun gear 44, by means of the switching element S1 the rotor 34 is connected in a rotationally fixed manner to the ring gear 48, by means of the switching element S2 the ring gear 48 is not connected in a rotationally fixed manner to the housing 28, by means of the switching element S5 the planet carrier 46 is connected in a rotationally fixed manner to the sun gear 54, as when engaging the first gear, while the switching element S5 enables the ring gear 58 to rotate about the main rotation axis 40 relative to the sun gear 44 and relative to the planet carrier 46, or vice versa, by means of the switching element S6 the ring gear 58 is connected in a rotationally fixed manner, as when engaging the first gear. non-rotatably connected to the housing 28,As when engaging first gear, the sun gear 54 is non-rotatably connected to the housing 28 by means of the seventh shifting element S7, so that the shifting element S7 releases the sun gear 54 for rotation about the main rotational axis 40 relative to the housing 28. To engage a third gear, the rotor 34 is non-rotatably connected to the sun gear 44 by means of the coupling shifting element KS, in particular by means of the third shifting element S3, as when engaging first gear. As when engaging second gear, the rotor 34 is non-rotatably connected to the ring gear 48 by means of the shifting element S1. As when engaging second gear, the ring gear 48 is non-rotatably connected to the housing 28 by means of the shifting element S2, so that the shifting element S2 releases the ring gear 48 for rotation about the main rotational axis 40 relative to the housing 28.As with the engagement of first gear and second gear, the planet carrier 46 is connected in a rotationally fixed manner to the sun gear 54 by means of the shifting element S5, whereby the shifting element S5 releases the planet carrier 46 and the sun gear 54 for rotation about the main rotation axis 40 relative to the ring gear 58, or vice versa. As with the engagement of first gear and second gear, the ring gear 58 is connected in a rotationally fixed manner to the housing 28 by means of the shifting element S6, and as with the engagement of first and second gear, the sun gear 54 is not connected in a rotationally fixed manner to the housing 28 by means of the shifting element S7, so that the shifting element S7 releases the sun gear 54 for rotation about the main rotation axis 40 relative to the housing 28. To engage a fourth of the gears, as with the engagement of second gear, the coupling shifting element KS, in particular the fourth shifting element S4,the sun gear 44 is connected to the housing 28 in a rotationally fixed manner. As when engaging the second and third gears, the rotor 34 is connected to the ring gear 48 in a rotationally fixed manner by means of the switching element S1. As when engaging the second and third gears, the ring gear 48 is not connected to the housing 28 in a rotationally fixed manner by means of the switching element S2, so that the switching element S2 releases the ring gear 48 for rotation about the main rotation axis 40 relative to the housing 28. By means of the switching element S5, the planet carrier 46 is connected to the ring gear 58 in a rotationally fixed manner, while the switching element S5 releases the planet carrier 46 and the ring gear 58 for rotation about the main rotation axis 40 relative to the sun gear 54, or vice versa. By means of the switching element S6, the ring gear 58 is not connected to the housing 28 in a rotationally fixed manner.so that the switching element S6 releases the ring gear 58 and thus the planet carrier 46 for rotation about the main rotation axis 40 relative to the housing 28, and by means of the seventh switching element S7 the sun gear 54 is connected to the housing 28 in a rotationally fixed manner. To engage a fifth of the gears, the rotor 34 is connected in a rotationally fixed manner to the sun gear 44 by means of the coupling switching element KS, in particular by means of the third switching element S3, as when engaging the first and third gears, and the rotor 34 is connected in a rotationally fixed manner to the ring gear 48 by means of the switching element S1, and the ring gear 48 is not connected in a rotationally fixed manner to the housing 28 by means of the switching element S2, so that the switching element S2 releases the ring gear 48 and thus the rotor 34 and the sun gear 44 for rotation about the main rotation axis 40 relative to the housing 28.By means of the shifting element S5, as when engaging the fourth gear, the planet carrier 46 is connected in a rotationally fixed manner to the ring gear 58, while the shifting element S5 releases the ring gear 58 and the planet carrier 46 for rotation about the main rotation axis 40 relative to the sun gear 44, or vice versa. By means of the shifting element S6, as when engaging the fourth gear, the ring gear 58 is not connected in a rotationally fixed manner to the housing 28, so that the shifting element S6 releases the ring gear 48 and thus the planet carrier 46 for rotation about the main rotation axis 40 relative to the housing 28. And as when engaging the fourth gear, the sun gear 54 is connected in a rotationally fixed manner to the housing 28 by means of the seventh shifting element S7. To engage the sixth gear, as when engaging the first, third and fifth gears, by means of the coupling shifting element KS, in particular by means of the third shifting element S3,the rotor 34 is connected in a rotationally fixed manner to the sun gear 44, as when engaging the second, third, fourth and fifth gear, the rotor 34 is connected in a rotationally fixed manner to the ring gear 48 by means of the switching element S1, the ring gear 48 is not connected in a rotationally fixed manner to the housing 28 by means of the switching element S2, so that the switching element S2 releases the ring gear 48 and thus the rotor 34 and the sun gear 44 for rotation about the main rotation axis 40 relative to the housing 28, the planet carrier 46 is simultaneously connected in a rotationally fixed manner to the sun gear 54 and in a rotationally fixed manner to the ring gear 58 by means of the switching element S5, so that the planet carrier 46, the sun gear 54 and the ring gear 58 are simultaneously connected in a rotationally fixed manner to one another by means of the fifth switching element S5, the ring gear 58 is connected in a rotationally fixed manner to the housing 28 by means of the switching element S6 or the ring gear 58 is not connected to the housing 28 in a rotationally fixed manner,so that, for example, the switching element S6 releases the ring gear 58 and thus the sun gear 54 and the planet carrier 46 for rotation about the main rotation axis 40 relative to the housing 28, and by means of the seventh switching element S7, the sun gear 54 is not connected in a rotationally fixed manner to the housing 28, so that, for example, the switching element S7 releases the sun gear 54 and thus preferably also the planet carrier 46 and the ring gear 58 for rotation about the main rotation axis 40 relative to the housing 28.

[0070] The first embodiment of the electric drive 26 is suitable, for example, for particularly light, i.e. low-weight to medium-weight vehicles.

[0071] Fig. 3 shows a second embodiment of the electric drive 26. The second embodiment is particularly advantageous for heavy long-distance vehicles. In the second embodiment, the electric drive 26 comprises a second electric motor 77 arranged coaxially with the electric motor 30, which second electric motor has a second stator 78 and a second rotor 80, in particular with a second rotor shaft 82. In particular, it is conceivable that the respective stator 32 or 78 is fixed to the housing 28, in particular in a rotationally fixed manner. The rotor 80 is rotatable about a second rotor axis 84 relative to the second stator 78. Since the electric motors 30 and 77 are arranged coaxially with one another, the second rotor axis 84 coincides with the first rotor axis 38 and thus with the main rotation axis 40, so that the electric motor 77 or its rotor 80 is also arranged coaxially with the planetary gear sets 42 and 52 and thus coaxially with their elements.Via the rotor 80, the second electric motor 77 can provide second torques as second drive torques, by means of which the vehicle wheels 24 can be driven, in particular purely electrically. The second rotor 80 is or can be coupled in a rotationally fixed manner to one of the elements of the second planetary gear set 52. For example, a further switching element can be provided by means of which the rotor 80 can be coupled in a rotationally fixed manner to one element of the planetary gear set 52. In the second embodiment, which is shown in FIG. Fig. 3 As shown, the second switching element is formed by the switching element S7 or is formed integrally with the switching element S7. In other words, in the Fig. 3 shown second embodiment, the switching element S7 is used to connect the rotor 80 selectively or as required with one element of the second planetary gear set 52 in a rotationally fixed manner. Fig. 3 In the second embodiment shown, one element of the second planetary gear set 52 is the second sun gear 54, so that in the second embodiment it is provided that the rotor 80 can be connected in a rotationally fixed manner to the sun gear 54, in particular by means of the further switching element or by means of the seventh switching element S7. For example, the switching element S7 can be switched between three states. In a first of the states, the switching element S7 releases both the sun gear 54 and the rotor 80 for rotation about the main rotation axis 40 relative to the housing 28 and relative to one another, so that, for example, in the first state, the rotor 80 is not rotationally fixedly connected to the sun gear 54 or to the housing 28.In a second of the states, for example, the sun gear 54 is connected to the housing 28 in a rotationally fixed manner by means of the switching element S7, while the switching element S7, for example, releases the rotor 80 for rotation about the main rotation axis 40 relative to the housing 28 and relative to the housing 28. In a third of the states, for example, the rotor 80 is connected to the sun gear 54 in a rotationally fixed manner by means of the switching element S7, while the switching element S7 releases the rotor 80 and the sun gear 54 for rotation about the main rotation axis 40 relative to the housing 28. Thus, in the second embodiment, it is provided that the rotor 80 is or can be coupled to the fourth element in a rotationally fixed manner.

[0072] In the second embodiment, the first electric motor 30, the first planetary gear set 42, the second planetary gear set 52, the input gear 66 and the second electric motor 77 are arranged one after the other, i.e. consecutively, in the direction of the drivable second axis 20 (main drive axis) and / or in the axial direction of the rotor 34, whose axial direction coincides with the axial direction of the rotor 80, in the following order: the first electric motor 30 - the first planetary gear set 42 - the second planetary gear set 52 - the input gear 66 - the second electric motor 77.

[0073] In particular, in the second embodiment, it is provided that the planetary gear sets 42 and 52 are arranged in the axial direction of the respective electric motor 30 or 77 between the electric motors 30 and 77, so that the electric motor 77 is arranged in the axial direction of the respective electric motor 30 or 77 on a side of the planetary gear set 52 facing away from the electric motor 30, and the electric motor 30.

[0074] A further embodiment of the electric drive 26, not shown in the figures, is suitable, for example, for heavy construction site vehicles. In this further embodiment, not shown in the figures, the electric motors 30 and 77 are arranged, for example, on a common side of the first planetary gear set 42, facing away from the second planetary gear set 52 in the axial direction of the respective electric motor 30 or 77 and facing the electric motors 30 and 77. In this case, for example, a coupling element is conceivable, by means of which the rotors 34 and 80 can be connected to one another in a rotationally fixed manner. It is also conceivable, for example, for the rotor 80 to be rotationally fixedly connected to the ring gear 48 by means of the switching element S1, wherein, for example, the second electric motor 77 is arranged between the electric motor 30 and the first planetary gear set 42 in the axial direction of the respective electric motor 30 or 77.For example, the coupling element is arranged in the axial direction of the respective electric motor 30 or 77 between the electric motors 30 and 77.

[0075] Finally, Fig. 4 a third embodiment of the electric drive 26. In the third embodiment, a further electric motor 86 is provided with a further stator 88 and a further rotor 90, which, for example, has a further rotor shaft 92. In particular, the further rotor 90 is rotatable about a further rotor axis 94 relative to the further stator 88. The electric motors 86 and 30 are arranged coaxially to one another, so that the rotor axis 94 coincides with the main rotation axis 40. Thus, the rotors 34 and 90 are arranged coaxially to one another, and the electric motor 86 or its rotor 90 is arranged coaxially to the planetary gear sets 42 and 52.

[0076] In the third embodiment, a third planetary gear set 96 is provided with a seventh element, eighth element, and ninth element, and a fourth planetary gear set 98 is provided with a tenth element, eleventh element, and twelfth element. In the third embodiment, the seventh element is a third sun gear 100, the eighth element is a third planet carrier 102, which is also referred to as a third carrier, and the ninth element is a third ring gear 104. The third planetary gear set 96 has at least one or more third planet gears 106, which are rotatably mounted on the planet carrier 102 and mesh, on the one hand, in particular directly, with the ring gear 104 and, on the other hand, in particular directly, with the sun gear 100, which is also referred to as the third sun. Accordingly, the third planet carrier 102 is also referred to as the third carrier.The tenth element is a fourth sun gear 108, also referred to as the fourth sun, the eleventh element is a fourth planet carrier 110, also referred to as the fourth carrier, and the twelfth element is a ring gear 112. The fourth planetary gear set 98 has at least one or more fourth planet gears 114, which are rotatably mounted on the fourth carrier and mesh, or engage, on the one hand, in particular directly, with the fourth ring gear 112 and, on the other hand, in particular directly, with the fourth sun. It can be seen that the planetary gear sets 96 and 98 are arranged coaxially to one another, with the planetary gear set 96 and the planetary gear set 98 also being arranged coaxially to the electric motors 30 and 86 and coaxially to their rotors 34 and 90, respectively.The second rotor 90 is or can be coupled in a rotationally fixed manner to the seventh element, the eighth element being or can be coupled to the tenth element, and the eleventh element being or can be coupled in a rotationally fixed manner to the input gear 66 of the angular drive 62. Basically, the third embodiment is the first embodiment in duplicate, so that, for example, the third embodiment can be generated from the first embodiment by combining the first embodiment or the embodiment relative to the image plane of . Fig. 2 components arranged to the left of the input gear 66 are mirrored at a mirror plane in order to thereby determine the relative to the image plane of Fig. 4to create a mirror image of the components arranged to the right of the input gear 66, wherein the mirror plane runs perpendicular to the main rotational axis 40, and wherein the input gear 66, designed for example as a ring gear, of the angular drive 62, which is also designed for example as a bevel drive, runs in the mirror plane. Thus, for example, a first gear 116 is provided which comprises the planetary gear sets 42 and 52 and, for example, the electric motor 30, and a second gear 118 is provided which comprises the planetary gear sets 96 and 98 and, for example, the electric motor 86, which is or can be a mirror image of the gear 116 with respect to the mirror plane. It is conceivable that the gear ratio series of the left gear 116 differs from that of the right gear 118.Furthermore, it is conceivable that the electric motors 30 and 86 differ from one another in their sizes and / or power, so that, for example, the electric motor 30 is larger than the electric motor 86, or vice versa. The fourth embodiment has the following advantages in particular: . Shifting without interruption in traction, the gearshift points on the left and right are different due to the gear ratios. Due to the different gear ratios, different electric motors 30 and 86 are also possible. In this case, it is particularly advantageous to install a large electric motor on the one hand, which has a high output and can be used when starting off and for driving uphill. On the other hand, it is advantageous to use a small electric motor, for example with an output of 80 to 120 kilowatts, for more efficient driving on long distances. The aim here is that as soon as the motor vehicle 10 is on the motorway, it requires around 100 kilowatts of power, and the motor vehicle 10 gets this from the smaller electric motor. It is also advantageous to use two different electric motors with the features mentioned here in the second embodiment.

[0077] The angular drive 62 can be decoupled, in particular via a clutch K1 or K2. It can be seen that by means of the clutch K1, one of the elements of the planetary gear set 52, in particular the planet carrier 46, can be connected in a rotationally fixed manner to the input gear 66, and by means of the clutch K2, the input gear 66 can be coupled in a rotationally fixed manner to one of the elements of the planetary gear set 96, in particular to the planet carrier 102. The respective clutch K1 or K2 can be a positive-locking clutch, in particular a dog clutch. The corresponding other torque path or the other electric motor is only activated when necessary, such as when climbing an incline or during recuperation (braking). This allows a particularly long range to be achieved with the same battery capacity.

[0078] Particularly with regard to the first embodiment and, where applicable, the second embodiment, as well as the further embodiment not shown in the figures, it should be noted that at least almost all gear ratio variants are possible using other planetary gear sets, angle drive, and spur gear ratios. This unit represents a high-voltage power unit, comparable to a power pack in conventional drives. The electric drive 26 can be flanged to today's axle and frame designs using the cardan shaft 64 without any modifications, for example, to convert a conventional vehicle with an exclusively combustion engine into an electric or hybrid vehicle.While different electric axles are currently required for light and heavy commercial vehicles or even buses, the use of the electric drive 26 allows current vehicle-specific axles to be retained, and the same electric drive 26 can be installed as a high-voltage power unit, particularly with an adjustment of the bevel / spur gear ratio. Compared to an electric axle, the electric drive 26 is smaller, easier to handle in terms of production, storage, and logistics, and is frame-mounted. This is particularly beneficial for electrical components, as excessive vibrations in these components can be avoided. The electric drive 26 also offers the option of designing vehicles as P3 or P4 hybrids.From a cost perspective, the number of switching elements can be kept particularly low, or the number of switching elements can be reduced compared to those shown, which can save costs and weight, although a lower number of gears can then also be represented. List of reference symbols

[0079] 10 Motor vehicle 12 First axle 14 First vehicle wheel 16 Double arrow 18 Frame 20 Second axle 22 Double arrow 24 Second vehicle wheel 26 Electric drive 27 Arrow 28 Housing 29 Traction battery 30 Electric motor 32 Stator 34 Rotor 36 Rotor shaft 38 Rotor axis 40 Main rotation axis 42 First planetary gear set 44 Sun gear 46 Planetary carrier 48 Ring gear 50 Planetary gear 52 Second planetary gear set 54 Sun gear 56 Planetary carrier 58 Ring gear 60 Planetary gear 62 Angular drive 64 Cardan shaft 66 Input gear 68 Output gear 70 Axle gear 72 Spur gear stage 74 First gear 76 Second gear 77 Second electric motor 78 Second stator 80 Second rotor 82 Second rotor shaft 84 Second rotor axis 86 Further electric motor 88 Further stator 90 Further rotor 92 Further rotor shaft 94 Further rotor axis 96 Third planetary gear set 98 Fourth planetary gear set 100 Sun gear 102 Planetary carrier 104 Ring gear 106 Planetary gear 108 Sun gear 110 Planetary carrier 112 Ring gear 114 Planetary gear 116 First gear 118 Second gear A Output side E Input side K1,K2Coupling KSCoupling switching element S1-S7Switching element SE1-3Page,

Claims

1. A motor vehicle (10), having a steerable first axle (12), having a driveable second axle (20), having an electric drive system (26) for driving the second axle (20), and having a traction battery (28), by means of which the electric drive system (26) can be supplied with electrical energy stored in the traction battery, the electric drive system (26) comprising: - a housing (28), - an electric motor (30), comprising a stator (32) and a rotor (34) rotatable relative to the stator (32) and relative to the housing (28) about a rotor axis (38), - a first planetary wheel set (42), arranged coaxially to the rotor axis (38), comprising a first element, a second element, and a third element, - a second planetary wheel set (52), arranged coaxially to the rotor axis (38), comprising a fourth element, a fifth element, and a sixth element, wherein, in the axial direction of the rotor (34), the electric motor (30), the first planetary wheel set (42), and the second planetary wheel set (52) are arranged in sequence in the following order: the electric motor (30) - the first planetary wheel set (42) - the second planetary wheel set (52), and wherein - the housing (28) is rigidly connected to a frame (18) of the motor vehicle (10), - the electric drive system (26) comprises an angle drive (62), - the motor vehicle (10) comprises a propeller shaft (64), - one of the elements of the second planetary wheel set (52) is or can be non-rotatably coupled to an input gear wheel (66) of the angle drive (62), and - an output side (A) of the propeller shaft (64) is or can be coupled to an axle gear (70) of the second axle (20), characterised in that: - the rotor axis (38) is arranged perpendicular to the vehicle longitudinal direction (22), - in the vehicle longitudinal direction (22), the first axle (12), the traction battery (28), the second axle (20), and the electric drive system (26) are arranged in sequence in the following order: the first axle (12) - the traction battery (28) - the second axle (20) - the electric drive system (26), - an output gear wheel (68) of the angle drive (62) is or can be coupled to an input side (E) of the propeller shaft (64).

2. The vehicle (10) according to claim 1, characterised in that the output gear wheel (68) of the angle drive (62) is non-rotatably coupled to a first gear wheel (74) of a spur wheel stage (72).

3. The vehicle (10) according to claim 2, a second gear wheel (76) of the spur wheel stage (72) is non-rotatably coupled to the input side (E) of the propeller shaft (64).

4. The vehicle (10) according to one of the preceding claims, characterised in that the electric drive system (26) comprises: - a first switching element (S1), by means of which the third element can be non-rotatably coupled to the rotor, - a second switching element (S1), by means of which the third element can be non-rotatably coupled to the housing (28), - a third switching element (S1), by means of which the first element can be non-rotatably coupled to the rotor (34), - a fourth switching element (S4), by means of which the first element can be non-rotatably coupled to the housing (28), wherein the fourth switching element (S4) is arranged on a side (S3) of the electric motor (30) facing away from the first planetary wheel set (42) in the axial direction, and - a fifth switching element (S5), by means of which the second element can be non-rotatably coupled to the fourth element, wherein the fifth element is or can be non-rotatably coupled to the input gear wheel (66) of the angle drive (62).

5. The vehicle (10) according to claim 4, characterised in that the fifth switching element (S5) is configured to couple the second element non-rotatably to the fourth element and non-rotatably to the sixth element.

6. The vehicle (10) according to claim 4 or 5, characterised by a sixth switching element (S6), by means of which the sixth element can be non-rotatably coupled to the housing (28),7. The vehicle (10) according to one of claims 4 to 6, characterised in that the third switching element (S3) and the fourth switching element (S4) are arranged axially adjacent and are combined into a coupling switching element (KS) having at least two switching positions.

8. The vehicle (10) according to one of claims 4 to 7, characterised by a seventh switching element (S7), by means of which the fourth element can be non-rotatably coupled to the housing (28).

9. The vehicle (10) according to claim 8, characterised in that when viewed in the direction of the driveable second axle (20) and / or in the axial direction of the rotor (34), the fourth switching element (S4), the electric motor (30), the first planetary wheel set (42), the second planetary wheel set (52), the input gear wheel (66), and the seventh switching element (S7) are arranged in sequence in the following order: the fourth switching element (S4) - the electric motor (30) - the first planetary wheel set (42) - the second planetary wheel set (52) - the input gear wheel (66) - the seventh switching element (S7).

10. The vehicle (10) according to one of the preceding claims, characterised by a second electric motor (77) arranged coaxially to the electric motor (30), comprising a second stator (78) and a second rotor (80) rotatable relative to the second stator (78), wherein the second rotor (80) is or can be non-rotatably coupled to one of the elements of the second planetary wheel set (52).

11. The vehicle (10) according to claim 10, characterised in that the second rotor (80) is or can be non-rotatably coupled to the fourth element.

12. The vehicle (10) according to claim 10 or 11, characterised in that when viewed in the direction of the driveable second axle (20) and / or in the axial direction of the first electric motor (30), the first electric motor (30), the first planetary wheel set (42), the second planetary wheel set (52), the input gear wheel (66), and the second electric motor (77) are arranged in sequence in the following order: the first electric motor (30) - the first planetary wheel set (42) - the second planetary wheel set (52) - the input gear wheel (66) - the second electric motor (77).

13. The vehicle (10) according to one of claims 1 to 9, characterized by: - a further electric motor (86) having a further stator (88) and a further rotor (90), which is arranged coaxially to the first rotor (34) and the planetary wheel sets (42, 52), - a third planetary wheel set (96) having a seventh element, an eighth element, and a ninth element, which are arranged coaxially to the rotors (34, 90), to the first planetary wheel set (42), and to the second planetary wheel set (52), and - a fourth planetary wheel set (98) having a tenth element, an eleventh element, and a twelfth element, which are arranged coaxially to the rotors (34, 90), to the first planetary wheel set (42), to the second planetary wheel set (52), and to the third planetary wheel set (96), wherein the second rotor (90) is or can be non-rotatably coupled to the seventh element, wherein the eighth element is or can be non-rotatably coupled to the tenth element, and wherein the eleventh element is or can be non-rotatably coupled to the input gear wheel (66) of the angle drive (62).

14. The vehicle (10) according to claim 13, characterised in that when viewed in the direction of the driveable second axle (20) and / or in the axial direction of the first rotor (34), the first electric motor (30), the first planetary wheel set (42), the second planetary wheel set (52), the input gear wheel (66) of the angle drive (62), the fourth planetary wheel set (98), the third planetary wheel set (96), and the further electric motor (86) are arranged in sequence in the following order: the first electric motor (30) - the first planetary wheel set (42) - the second planetary wheel set (52) - the input gear wheel (66) of the angle drive (62) - the fourth planetary wheel set (98) - the third planetary wheel set (96) - the further electric motor (86).