DE102021206649A1 - Drive assembly for a vehicle and vehicle with the drive assembly - Google Patents

Abstract

A drive arrangement 2 for a vehicle 1 is provided, with a first electrical machine 3 for generating a first drive torque, the first electrical machine 3 having a first rotor 7, which is drive-connected to a first drive shaft 5, with a second electrical machine 4 for generating a second drive torque, the second electric machine 4 having a second rotor 8, which is drivingly connected to a second drive shaft 6, with a planetary gear 15 for translating the first and the second drive torque to at least one output shaft 21, 22, the first drive shaft 4 forms a first transmission input and the second drive shaft 6 forms a second transmission input into the planetary gear 15, the first and the second rotor 7, 8 being arranged coaxially with respect to a main axis of rotation 100, the first and the second electric machine 3, 4 one mean Same stator 9 for the first and the second rotor 7, 8 have.

Description

The invention relates to a drive assembly for a vehicle having the features of the preamble of claim 1. The invention also relates to a vehicle having the drive assembly.

Electric drive trains are known in vehicles, which can be hybrid, in particular in combination with an internal combustion engine, or purely electric. The electric drive trains have at least one electric motor, which is power-split via at least one transmission. Furthermore, a further electric motor can be integrated into the drive train in such a way that the torques of the two electric motors are added and the drive power of the vehicle can thus be improved.

The pamphlet DE 10 2011 013 759 A1 discloses an all-electric powertrain for a vehicle. The drive train comprises a first electric machine and a second electric machine, at least one first planetary gear, which has a ring gear, a planetary carrier carrying a plurality of planetary gears, and a sun gear, and an output shaft, which is connected at least via the first planetary gear from the first and second Electrical machine can be driven together to move the vehicle, wherein the first electrical machine and the second electrical machine are coupled via the first planetary gear torque subtracting.

The invention is based on the object of proposing a drive arrangement of the type mentioned at the outset, which is characterized by high efficiency and low installation space requirements.

This object is achieved by a drive assembly having the features of claim 1 and a vehicle having the features of claim 15. Further configurations and advantages according to the invention emerge from the corresponding subclaims and the following description and attached figures.

The subject matter of the invention is a drive arrangement which is designed and/or suitable for a vehicle. In particular, the drive arrangement serves to drive the vehicle electrically.

The drive arrangement has a first and a second electric machine, each of which is designed and/or suitable for generating a drive torque. The first and the second electric machine can each be operated both in a motor mode and in a generator mode. In particular, the first and the second electric machine can be dimensioned differently. The first and the second electric machine can preferably provide different speed values and/or torque values.

The drive arrangement has a first drive shaft, which is drivingly connected to a first rotor of the first electric machine, and a second drive shaft, which is drivingly connected to a second rotor of the second electric machine. In particular, the first drive shaft is non-rotatably connected to the first rotor and the second drive shaft is non-rotatably connected to the second rotor. For example, the first drive shaft and the first rotor and/or the second drive shaft and the second rotor can be positively and/or non-positively connected to one another at least in the circumferential direction. Alternatively, however, the first drive shaft and the first rotor and/or the second drive shaft and the second rotor can also be manufactured from a common material section, preferably in one piece.

The drive arrangement has a planetary gear, which is designed and/or suitable for translating the first and the second drive torque to at least or exactly one output shaft. In particular, the planetary gear serves to transfer the two drive torques to the output shaft both in combined operation and in individual operation of the two electric machines in order to convert different speeds and/or torques via a differential gear on the vehicle wheels of the vehicle, in particular a drive axle. For this purpose, the first drive shaft forms a first transmission input and the second drive shaft forms a second transmission input into the planetary gear. The output shaft is preferably geared to a gear output of the planetary gear. The at least one output shaft is preferably connected to the vehicle wheels of the drive axle in order to move the vehicle forward. Optionally, at least one gear for torque distribution and/or torque conversion to the at least one output shaft can be arranged downstream of the planetary gear.

In the context of the invention, it is proposed that the first and the second rotor be arranged coaxially to one another with respect to a main axis of rotation. In particular, the main axis of rotation is defined by an axis of rotation of the first and/or the second drive shaft. Preferably, the first and the second electrical machine with respect to the Main axis of rotation arranged coaxially to each other. The first and the second electric machine have a common stator for the first and the second rotor. In particular, the stator is designed and/or arranged in relation to the two rotors in such a way that the two electrical machines can be operated independently of one another. The stator is preferably arranged radially between the two rotors in relation to the main axis of rotation.

The advantage of the invention consists in particular in the fact that a compact arrangement, in particular high integration of the electric machines, can be implemented by using a common stator. In addition, by using only one stator, the number of components and the overall weight of the drive arrangement can be reduced and can therefore be produced cost-effectively. Furthermore, an electrical drive arrangement is proposed which can be operated much more efficiently in terms of cooling and efficiency over the entire operating range by using two electrical machines.

In a specific embodiment, it is provided that the first electrical machine is designed as an internal rotor, with the first rotor being arranged radially inside the stator. The second electrical machine is designed as an external rotor, with the second rotor being arranged radially outside of the stator. In particular, the first rotor of the first electrical machine is arranged radially inside the second rotor of the second electrical machine. The stator is preferably arranged at least in sections inside the outer rotor and the inner rotor is arranged at least in sections inside the stator. The electric machine with a smaller diameter, in particular the inner rotor, can preferably be operated at a higher speed and the electric machine with a larger diameter, in particular the outer rotor, can be operated with a greater torque. Due to the "nested" arrangement of the two rotors with the common stator, a drive arrangement can be proposed which is characterized by a particularly compact design of the two electrical machines with regard to axial and radial installation space.

In a further specific implementation, it is provided that the first and the second drive shaft are each designed as a hollow shaft, with the output shaft being guided coaxially through the two hollow shafts at least in sections. In particular, the output shaft is at least partially guided coaxially through the first drive shaft and/or arranged radially inside the first drive shaft. In particular, the first drive shaft is at least partially guided coaxially through the second drive shaft and/or arranged radially inside the second drive shaft. The output shaft is particularly preferably arranged coaxially and/or concentrically with respect to the first and the second drive shaft. In particular, the output shaft is guided coaxially through the two hollow shafts to a vehicle wheel of the drive axle. Due to the coaxial arrangement, a drive arrangement is proposed which is characterized by a particularly compact and symmetrical design.

In a further specification, it is provided that the stator has a first and a second stator winding. In particular, the stator has a stator core with a plurality of radially inwardly directed first stator teeth and a plurality of radially outwardly directed second stator teeth, the first stator winding being wound on the first stator teeth and the second stator winding being wound on the second stator teeth. The first rotor is operatively connected to the first stator winding and the second rotor is operatively connected to the second stator winding. In particular, the first and the second stator winding act as electromagnets when current flows through, the drive torque for the rotation of the first rotor being generated by the interaction of the first stator winding of the stator with the first rotor and the drive torque for the rotation of the second rotor being generated by the interaction of the second stator winding of the stator is generated with the second rotor. A drive arrangement is thus proposed which enables independent operation of the first and the second electric machine using a common stator.

In one possible development, it is provided that the first and the second electric machine have common power electronics, with the first and the second stator winding being connected to the power electronics. In particular, the power electronics are designed to control and/or regulate a power supply of the first and the second electric machine. By using common power electronics for the two electrical machines, the drive arrangement can be implemented with half the number of electrical components, so that the drive arrangement is further optimized in terms of costs and installation space. Alternatively, however, separate power electronics can also be assigned to each electrical machine, with the first stator winding being connected to first power electronics and the second stator winding being connected to second power electronics.

In a first possible realization it is provided that the first and the second stator winding are arranged offset to one another in the axial direction in relation to the main axis of rotation. In particular, the first stator winding extends in relation to the main axis of rotation in a first radial plane and the second stator winding in a second radial plane, the two radial planes being arranged at a distance from one another in the axial direction. The first and second stator windings are preferably arranged one behind the other and/or spaced apart when viewed in the axial direction, the first rotor being arranged radially opposite the first stator winding and the second rotor being arranged radially opposite the second stator winding. The axial offset of the stator windings makes it possible to ensure that the magnetic fields generated by the first and second stator windings do not affect one another, or only slightly.

In an alternative implementation, it is provided that the first and the second stator winding are arranged parallel to one another in the axial direction in relation to the main axis of rotation. In particular, the first and the second stator winding extend in a common radial plane in relation to the main axis of rotation. The first and second stator windings are preferably arranged concentrically with one another and/or arranged opposite one another in the radial direction. A drive arrangement is thus proposed which is characterized by a particularly compact configuration with a small amount of axial space.

In a further embodiment it is provided that the planetary gear has a sun wheel, several planet wheels carried by a planet wheel carrier and a ring gear. In particular, the planetary gear is arranged coaxially to the main axis of rotation or the first and the second electric machine. The first drive shaft is connected to the sun gear in a rotationally fixed manner to form the first transmission input. In particular, the sun gear is designed as a separate sun gear which is connected to the first drive shaft in a rotationally fixed manner, in particular in a form-fitting and/or force-fitting and/or material-locking manner. Alternatively, however, the first drive shaft can also have a sun gear section, the sun gear being formed by sun gear teeth arranged on the outer circumference of the first drive shaft. The second drive shaft is connected to the ring gear in a torque-proof manner to form the second transmission input. In particular, the ring gear is designed as a separate ring gear, which is non-rotatably, in particular positively and/or non-positively and/or integrally connected to the second drive shaft. Alternatively, however, the second drive shaft can also have a ring gear section, with the ring gear being formed by ring gear teeth arranged on the inner circumference of the second drive shaft. In particular, the transmission output is formed by the planet carrier. The planetary carrier can be connected in a rotationally fixed manner to the at least one output shaft. Alternatively, however, the planetary carrier and the at least one output shaft can be connected to one another in terms of transmission technology. A drive arrangement is thus proposed in which switching elements can be dispensed with in connection with the planetary gear and nevertheless different translations via the speed differences of the two electrical machines can be mapped via the planetary gear.

In a specific implementation, it is provided that in a first operating mode either the first or the second electrical machine is operated. In particular, when the first electric machine is in operation, the sun gear is driven and the ring gear is fixed. In particular, when the second electrical machine is in operation, the ring gear is driven and the sun gear is held in place. In principle, the ring gear or the sun gear can be fixed by self-locking of the planetary gear. Alternatively, however, it can also be provided that the first and/or the second drive shaft only rotates freely in one direction of rotation and is blocked in an opposite direction of rotation. Furthermore, the first and the second electric machine are operated in a second operating mode to implement different gear ratios at different speeds. In particular, the planetary gear serves as a summing gear when the first and the second electric machine are driven. In the second operating mode, the output speed and/or the output torque on the output shaft can preferably be changed steplessly by changing the speed on the first and/or the second electrical machine. In particular, the first and the second electric machine are coupled via the planetary gear in a torque-subtracting and/or speed-adding manner. The speeds and/or torques for the operation of the two electrical machines are preferably matched to one another in such a way that the efficiency is as high as possible and/or the power loss is as low as possible. In other words, the two electrical machines are each operated with a speed and/or a torque at which the sum of the individual power losses is as low as possible. A drive arrangement is thus proposed which is characterized by particularly efficient operation.

In a possible development it is provided that the drive assembly has at least one freewheel device, the freewheel a direction releases the first and the second transmission input in one direction of rotation and blocks it in an opposite direction of rotation. In particular, the function of the freewheel device in the first operating mode is to block the transmission input that is not being driven by the electric machine. In other words, in the first mode of operation, the freewheel device prevents rotation of the ring gear when the sun gear is driven and rotation of the sun gear when the ring gear is driven. Thus, the first and the second drive shaft can only be driven in one direction of rotation, whereas the first and the second drive shaft are blocked in an opposite direction of rotation by the freewheel device.

In an alternative or optionally supplementary implementation, it is provided that the first and the second electric machine are driven in opposite directions in a further operating mode for implementing a low-range gear, also referred to as a “reduction gear”. In particular, the low-range gearbox serves to provide a high output torque with a simultaneously low output speed on the output shaft. The two electrical machines are preferably operated in the further operating mode when the vehicle is being moved under high load and/or on steep terrain. For this purpose, in particular, one electrical machine is driven in a clockwise direction and the other electrical machine is driven in a counter-clockwise direction. In particular, the drive arrangement for implementing the low-range transmission has no freewheel device. A drive arrangement is thus proposed which is characterized by a compact configuration and high functionality.

In a possible development, it is provided that the drive arrangement has a differential gear. In particular, the differential gear serves to distribute the drive torque at the gear output to the vehicle wheels of the vehicle or the drive axle. For this purpose, the planetary gear is connected to the differential gear in terms of transmission technology, so that an output torque is distributed to the two vehicle wheels via the differential gear. In particular, the differential gear has a first and a second output shaft, with one output shaft being connected to a first vehicle wheel and the second output shaft being connected to a second vehicle wheel. In particular, one of the two output shafts is guided coaxially through the first drive shaft, which is designed as a hollow shaft, to the associated vehicle wheel.

In a further possible specification, it is provided that at least or exactly one of the two electrical machines is connected to an auxiliary unit via the associated drive shaft in terms of drive technology. In particular, the ancillary unit can be designed as an air conditioning compressor, a brake booster or a hydraulic pump. Provision can be made for one or more auxiliary units to be connected to the first and/or the second drive shaft in terms of drive technology and to be supplied with kinetic energy. For example, one or more ancillary units can be connected to the drive shaft of the inner rotor, which must be operated at a high speed. Alternatively or optionally in addition, one or more ancillary units, which have to be operated with a high torque, can be connected to the drive shaft of the external rotor. A drive arrangement can thus be proposed which is characterized by a particularly space-saving and efficient connection of auxiliary units.

In a possible further development it is provided that the ancillary unit is designed as a cooling/lubricating oil pump, wherein the cooling/lubricating oil pump is and/or can be connected to the first drive shaft of the internal rotor. In particular, the cooling/lubricating oil pump can thus be operated at high speeds for efficient cooling and/or lubrication. In addition, the cooling/lubricating oil pump can also be arranged variably within the drive arrangement without its own motor and controller.

A further object of the invention relates to a vehicle with the drive arrangement as has already been described above. In particular, the vehicle is designed as an electric vehicle, with the drive arrangement forming an electric drive axle of the electric vehicle. The drive arrangement can optionally form a front-wheel drive or a rear-wheel drive of the vehicle. Optionally, however, the vehicle can also have a further structurally identical drive arrangement to form an all-wheel drive, with one drive arrangement forming a front-wheel drive and the other drive arrangement forming a rear-wheel drive of the vehicle.

• 1 eine schematische Darstellung eines Fahrzeugs mit einer Antriebsanordnung als ein Ausführungsbeispiel der Erfindung;
• 2 eine schematische Darstellung der Antriebsanordnung in einer ersten Ausführung;
• 3 die Antriebsanordnung in gleicher Darstellung wie 2 in einer zweiten Ausführung.

The present invention is explained in more detail below with reference to the drawings. Show it:

• 1 a schematic representation of a vehicle with a drive arrangement as an embodiment of the invention;
• 2 a schematic representation of the drive arrangement in a first embodiment;
• 3 the drive arrangement in the same representation as 2 in a second version.

1 shows a vehicle 1 with a drive arrangement 2, which is set up to drive the vehicle 1, in a highly schematic representation. The drive arrangement 2 is designed as an electric drive axle, which can optionally be designed as a front or rear axle.

The drive arrangement 2 has a first and a second electric machine 3, 4. The first electrical machine 3 is designed to generate a first drive torque and the second electrical machine 4 is designed to generate a second drive torque. The two electrical machines 3, 4 are arranged coaxially to one another with respect to a main axis of rotation 100.

The drive assembly 2 has a first and a second drive shaft 5, 6, which are arranged coaxially with respect to the main axis of rotation 100 to each other. The first drive shaft 5 is connected in a rotationally fixed manner to a first rotor 7 of the first electrical machine 3 and the second drive shaft 5 is connected in a rotationally fixed manner to a second rotor 8 of the second electrical machine 4 . The two electrical machines 3, 4 also have a common stator 9 with a first and a second stator winding 10, 11, with the first rotor 7 interacting with the first stator winding 10 and the second rotor 8 with the second stator winding 11. The stator 9 is arranged coaxially to the main axis of rotation 100, with the first rotor 7 being arranged radially inside and the second rotor 8 being arranged radially outside the stator. In other words, the first electrical machine 3 is designed as an internal rotor and the second electrical machine 4 as an external rotor.

In this exemplary embodiment, the first and the second electrical machine 3, 4 have common power electronics 12, with the first and the second electrical machine 3, 4 being connected together to the power electronics 12 and fed with current. The advantage of the arrangement with two independent stator windings 10, 11 is that the two electrical machines 3, 4 and the two rotors 7, 8 can be operated independently of one another and only slightly influence one another. By using only one electronic power system 12, more electrical components can also be saved.

To transfer the first and the second drive torque to two vehicle wheels 13, 14 of the vehicle 1, the drive arrangement 2 has a planetary gear 15 and a differential gear 16, which are arranged coaxially with respect to the main axis of rotation 100 to the two electric machines 3, 4.

The planetary gear 15 has a sun gear 17 , a ring gear 18 and a planetary carrier 19 carrying a plurality of planetary gears 20 . The first drive shaft 5 forms a first transmission input into the planetary gear 15, the first drive shaft 5 being non-rotatably connected to the sun wheel 17 for this purpose. The second drive shaft 5 forms a second transmission input into the planetary gear 15, the second drive shaft 6 being non-rotatably connected to the ring gear 18 for this purpose. The planetary gears 20 mesh with the sun gear 17 on the one hand and with the ring gear 18 on the other hand, with the planetary carrier 19 forming a gear output from the planetary gear 15 and being geared to the differential gear 16 .

The differential gear 16 serves to distribute an output torque to two output shafts 21, 22, a first output shaft 21 being drive-connected to the first vehicle wheel 13 and a second output shaft 22 to the second vehicle wheel 14. The two output shafts 21, 22 define the main axis of rotation 100 with their axis of rotation, the second output shaft 22 being guided coaxially and/or concentrically through the two drive shafts 5, 6 and the two electrical machines 3, 4.

For this purpose, the first and the second drive shaft 5 , 6 are each designed as a hollow shaft, with the first drive shaft 5 being arranged radially inside the second drive shaft 6 . The first drive shaft 5 carries the sun gear 17 on the one hand and the first rotor 7 on the other on its outer circumference. On its inner circumference, the second drive shaft 5 carries the ring gear 18 on the one hand and the second rotor 8 on the other.

Today's e-machine concepts (e.g. e-axles, etc.) have the disadvantage that when using a single electric machine, it has to be operated over the entire operating range and there is always a compromise between high speed vs. cooling and power vs. efficiency is required. It is therefore proposed that the two electrical machines 3, 4 be matched to one another in such a way that they can be operated optimally in terms of efficiency, power and cooling. For example, the first and the second electric machine 3, 4 can be operated individually or in combination. In addition, components, installation space and costs can be saved by using a common stator 9 . Another advantage is also in a variable dimensioning of the electrical machines 3, 4 and the planetary gear 15 in the axial and radial direction in relation to the main rotary axis 100.

When the first electrical machine 3 is operated individually, the first drive torque is transmitted to the planet carrier 19 via the sun gear 17, with the ring gear 6 being stationary. When the second electrical machine 4 is operated individually, the second drive torque is transmitted to the planetary carrier 19 via the ring gear 18, with the sun gear 17 being stationary. The required self-locking effect of the planetary gear 15 when driven by only one electric machine 3, 4 can be achieved by the planetary gear 15 itself or by using freewheels, not shown, with the electric machines 3, 4 only rotating in one direction and be blocked in an opposite direction of rotation by the respective freewheel.

In a combined operation, the planetary gear 15 serves as a summing gear, with the speeds and/or torques of the two electrical machines 3, 4 being combined or summed. Furthermore, different translations via the speed differences (positive/negative) of the two electrical machines 3, 4 can be mapped. If no freewheel is used, a low-range gear can also be implemented by reversing the direction of rotation between the two electric machines 3, 4 (once clockwise/once anti-clockwise), in order to realize very slow output speeds with high drive torques at the transmission output via the planetary gear 15 . Due to the nested arrangement of the two electrical machines 3, 4 (once external rotor, once internal rotor) in connection with the planetary gear 15, additional switching elements can thus be dispensed with in order to implement different gear ratios at the gear output.

The drive arrangement 2 has an auxiliary unit 23, which can be arranged variably within the drive arrangement 2 without its own electric motor and controller (control unit/software). The ancillary unit 23 can be designed, for example, as a cooling lubricating oil pump, with one of the two electrical machines 3, 4, in particular the respective drive shaft 5, 6, forming a pump drive. For example, the ancillary unit 23 is connected to the first drive shaft 5, with the first electric machine 3 being able to be operated at a high speed to drive the ancillary unit 23. Alternatively, however, the inner rotor (first electrical machine 3) can be operated without an auxiliary unit for slow speeds at high efficiency and the external rotor (second electrical machine 4) can be operated with pump/cooling/lubrication (ancillary unit 23) for high speeds.

the 2 and 3 each show the drive arrangement 2, as in 1 described in a schematic representation. According to the 2 and 3 the stator 9 has a stator core with two independent stator windings 10, 11, the first stator winding 10 being arranged on the radial inside of the stator 9 or the stator bore and the second stator winding 11 being arranged on the radial outside of the stator 9. For example, the first and the second stator winding 10 can be designed as a slot or air-gap winding. An electric current flows through the two stator windings 10, 11 and interacts with a magnetic field which is generated either by permanent magnets or by excitation windings of the associated rotor 7, 8 or by the stator windings 10, 11 themselves, e.g. in asynchronous and reluctance machines. is produced.

According to 2 the two stator windings 10, 11 are arranged one behind the other and/or spaced apart from one another in the axial direction in relation to the main axis of rotation 100. The first stator winding 10 and the first rotor 7 extend in relation to the main axis of rotation 100 in a first radial plane 101 and the second stator winding 11 and the second rotor 8 in relation to the main axis of rotation 100 in a second radial plane 102, with the first and the second radial planes 101, 102 are arranged parallel to one another or spaced apart from one another in the axial direction.

According to 3 the two stator windings 10, 11 are arranged parallel to one another in the axial direction with respect to the main axis of rotation 100 or arranged opposite one another in the radial direction. The first and the second stator winding 10, 11 and the first and the second rotor 7, 8 extend with respect to the main axis of rotation 100 in a common radial plane 103, so that the first and the second rotor 7, 8 and the first and the two Stator winding 10, 11 are arranged concentrically to each other. A particularly compact arrangement of the two electrical machines 3, 4 with a small overall axial width is thus proposed.

Reference List

1

vehicle

2

drive arrangement

3

first electric machine

4

second electric machine

5

first driveshaft

6

second driveshaft

7

first rotor

8th

second rotor

9

stator

10

first stator winding

11

second stator winding

12

power electronics

13

first vehicle wheel

14

second vehicle wheel

15

planetary gear

16

differential gear

17

sun gear

18

ring gear

19

planet carrier

20

planet gears

21

first output shaft

22

second output shaft

23

ancillary unit

100

main axis of rotation

101

first radial plane

102

second radial plane

103

common radial plane

QUOTES INCLUDED IN DESCRIPTION

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

Patent Literature Cited

• DE 102011013759 A1 [0003]

Claims (15)

Drive arrangement (2) for a vehicle (1), with a first electrical machine (3) for generating a first drive torque, the first electrical machine (3) having a first rotor (7) which is drivingly connected to a first drive shaft (5). is connected, to a second electrical machine (4) for generating a second drive torque, the second electrical machine (4) having a second rotor (8) which is drivingly connected to a second drive shaft (6), with a planetary gear (15 ) for translating the first and the second drive torque to at least one output shaft (21, 22), the first drive shaft (4) forming a first transmission input and the second drive shaft (6) forming a second transmission input into the planetary gear (15), characterized in that that the first and the second rotor (7, 8) with respect to a main axis of rotation (100) arranged coaxially to one another, the first and the second electr Che machine (3, 4) have a common stator (9) for the first and the second rotor (7, 8). Drive arrangement (2) after claim 1 , characterized in that the first electrical machine (3) is designed as an internal rotor, the first rotor (7) being arranged radially inside the stator (9), and in that the second electrical machine (4) is designed as an external rotor, wherein the second rotor (8) is arranged radially outside the stator (9). Drive arrangement (2) after claim 1 or 2 , characterized in that the first and the second drive shaft (6, 7) are each designed as a hollow shaft, the at least one output shaft (21, 22) being guided through the two hollow shafts coaxially at least in sections with respect to the main axis of rotation (100). Drive arrangement (2) according to one of the preceding claims, characterized in that the stator (9) has a first and a second stator winding (10, 11), the first rotor (7) being operatively connected to the first stator winding (10) and the second rotor (8) is in operative connection with the second stator winding (11). Drive arrangement (2) after claim 4 , characterized in that the first and the second electrical machine (3, 4) have a common power electronics (12), wherein the first and the second stator winding (10, 11) are connected to the power electronics (12). Drive arrangement (2) after claim 4 or 5 , characterized in that the first and the second stator winding (10, 11) are arranged in different radial planes (101, 102) in the axial direction in relation to the main axis of rotation (100). Drive arrangement (2) after claim 4 or 5 , characterized in that the first and the second stator winding (10, 11) are arranged in the axial direction with respect to the main axis of rotation (100) in a common radial plane (103). Drive arrangement (2) according to one of the preceding claims, characterized in that the planetary gear (15) has a sun gear (17), a ring gear (18) and a planetary gear carrier (19) carrying a plurality of planetary gears (20), the first drive shaft (5th ) is non-rotatably connected to the sun gear (17) to form the first transmission input and the second drive shaft (6) is non-rotatably connected to the ring gear (18) to form the second transmission input. Drive arrangement (2) according to one of the preceding claims, characterized in that in a first operating mode either the first or the second electrical machine (3, 4) is operated and that in a second operating mode the first and the second electrical machine (3, 4th ) are operated to implement different transmission ratios at different speeds and/or directions of rotation. Drive arrangement (2) after claim 9 , characterized in that the drive arrangement (2) has at least one freewheel device, the freewheel device releasing the first and the second transmission input in one direction of rotation and blocking it in an opposite direction of rotation. Drive arrangement (2) according to one of the preceding claims, characterized in that the first and the second electrical machine (3, 4) are driven in opposite directions in a further operating mode for converting a low-range transmission. Drive arrangement (2) according to one of the preceding claims, characterized in that the drive arrangement (2) has a differential gear (16), the planetary gear (15) being geared to the differential gear (16) so that an output torque via the differential gear (16 ) is distributed to the two vehicle wheels. Drive arrangement (2) according to any one of the preceding claims, characterized in that the drive arrangement (2) at least an auxiliary unit (23), at least one of the two electrical machines (3, 4) being drive-connected to the auxiliary unit (23) via the associated drive shaft (5, 6). Drive arrangement (2) after claim 12 , characterized in that the ancillary unit (23) is designed as a cooling lubricating oil pump which is driven by the first drive shaft (5) of the first electrical machine (3) designed as an internal rotor. Vehicle (1) with the drive arrangement (2) according to one of the preceding claims, characterized in that the drive arrangement (2) is designed as an electric axle of the vehicle (2).

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