DE102018111419A1 - Drive module for a vehicle - Google Patents

Abstract

In hybrid vehicles or electric vehicles, the drive torque is provided by one or more electric motors at least partially or often completely. In the provision of the drive torque by electric motors produced in the electric motors waste heat, which must be dissipated. A corresponding cooling can be implemented on the one hand by air cooling or by a media cooling.
A drive module (1) for a vehicle is proposed with an electric motor area (32), an electric motor (2) being arranged in the electric motor area (32), the electric motor (2) having a rotor (3) and a stator (4). comprising a transmission region (36), wherein the transmission region (36) has a partial transmission (40), wherein in the transmission region (36) a transmission chamber (16) is formed and wherein the partial transmission (40) in the transmission chamber (16) at least is arranged in sections, with a rotor shaft (6), wherein the rotor shaft (6) with the rotor (3) of the electric motor (2) is connected and wherein the rotor shaft (3) forms an input shaft in the partial transmission (40), wherein the rotor shaft (3) is formed as a hollow shaft, with an oil circuit, wherein the transmission oil from the gear chamber (16) via the rotor shaft (6) is guided back into the gear chamber to cool the rotor (3) via the rotor shaft (6), with a cooling arrangement (21) for cooling the E 2) with a cooling fluid, wherein the cooling arrangement (21) has a gear compartment cooling section (20), wherein the gear compartment cooling section (20) is arranged in the gear section (36) in order to cool the transmission oil in the gear compartment (16) with the cooling fluid ,

Description

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

In hybrid vehicles or electric vehicles, the drive torque is provided by one or more electric motors at least partially or often completely. In the provision of the drive torque by electric motors produced in the electric motors waste heat, which must be dissipated. A corresponding cooling can be implemented on the one hand by air cooling or by a media cooling.

The publication DE 10 2015 214 309 A1 , which is probably the closest prior art discloses a drive with an electric motor for a vehicle. The electric motor is cooled by a cooling jacket. In addition, gear oil is performed as a second coolant from an oil sump through the rotor shaft designed as a hollow shaft in order to cool the rotor shaft and thus the rotor of the electric motor.

It is an object of the present invention to propose an improved cooling for an electric motor in a drive module. This object is achieved by a drive module with the features of claim 1. Advantageous or preferred embodiments of the invention will become apparent from the dependent claims, the following description and the accompanying drawings.

The invention relates to a drive module which is suitable and / or designed for a vehicle. The vehicle is designed in particular as a hybrid vehicle or as an electric vehicle. The drive module particularly preferably provides a main drive torque for the vehicle. It is at least preferred that the drive module provides at least 50% of the drive torque in a normal driving operation of the vehicle. The drive module is designed in particular as a self-holding module.

The drive module has an electric motor which generates the drive torque. An electric motor area is formed in the drive module, wherein the electric motor is arranged in the electric motor area. The electric motor has a rotor and a stator, wherein the electric motor is realized in particular as an internal rotor. The rotor defines a major axis of the drive module. Preferably, the electric motor area is dry, in particular formed without gear oil. The electric motor area is formed by a housing section of the drive module.

The drive module has a partial transmission, wherein the partial transmission leads the drive torque from the electric motor and optionally converts, in particular translated or stunted. The partial transmission can also be designed as a manual transmission. In particular, the partial transmission can be single-acting, double-flighted or multi-speed and / or realized as a transmission stage. Particularly preferably, the partial transmission has a planetary gear stage and / or a differential stage. For example, the planetary gear stage and the differential stage are formed coaxially with the rotor shaft.

The drive module has a transmission region, wherein a transmission chamber is formed in the transmission region. Preferably, in the gear chamber, an oil atmosphere, in particular transmission oil atmosphere. The partial transmission is either completely or only partially arranged in the gear compartment. The transmission area is formed by a housing section of the drive module.

The drive module has a rotor shaft, wherein the rotor shaft is rotatably connected to the rotor of the electric motor. The rotor shaft is in particular arranged coaxially and / or concentrically to the electric motor and / or to the rotor. The rotor shaft forms an input shaft in the sub-transmission to guide the drive torque from the electric motor to the sub-transmission. The rotor shaft preferably also defines the main axis in the drive module with its own axis of rotation. The transmission region and the electric motor region are preferably arranged coaxially to the main axis. In particular, the transmission area and electric motor area are arranged axially offset from one another. For example, one is arranged between the transmission region and the electric motor region. The baffle separates the electric motor area with the gearless oil atmosphere from the transmission area with the transmission oil atmosphere.

The rotor shaft is designed as a hollow shaft, so that transmission oil can be transported through the rotor shaft. It can be provided that the rotor shaft is formed in its entire length as a hollow shaft. Alternatively, the rotor shaft has one or more hollow shaft sections and is thereby formed as a hollow shaft. In particular, the rotor shaft has at least one axially extending channel.

In the drive module, an oil circuit is implemented, wherein the transmission oil is guided from the transmission chamber via the rotor shaft back to the gear compartment. In this way, the rotor shaft is flowed through with gear oil, so that the rotor shaft and thus the rotor of the electric motor are actively cooled.

Further, the drive module has a cooling arrangement for cooling the electric motor with a cooling fluid, wherein the cooling fluid is preferably formed without gear oil. In particular, the cooling fluid is realized as a water mixture or as a water-alcohol mixture or as a water-glycol mixture. Thus, the electric motor is cooled on the one hand by the oil circuit from the inside and on the other by the cooling arrangement in particular from the outside.

In the context of the invention it is proposed that the cooling arrangement has a gear compartment cooling section, wherein the gear compartment cooling section is arranged in the gear area. For example, the gear compartment cooling section is arranged at least in sections relative to the partition wall on the side of the gear compartment and / or the gearbox section. In particular, the gear compartment cooling section is located in the same axial section as the gear compartment and / or the gear section. By this structural configuration is achieved that the cooling arrangement acts on the oil circuit and in this way with the cooling fluid, the transmission oil is cooled in the gear compartment. As a result, cooled transmission oil is fed into the oil circuit at the entrance, so that the cooling of the rotor and thus of the electric motor is improved.

It is a consideration of the invention that the cooling arrangement is already present anyway, so that it can also be configured with a low design effort so that it is associated with the gearbox area via the gear compartment cooling section. In this way, the cooling can be significantly improved by the oil circuit.

In a preferred development of the invention, an oil sump is formed in the gear compartment, wherein the gear compartment cooling section is arranged in the same axial section of the drive module as an oil sump section of the oil sump. The gear compartment cooling section can thus extend over part of the oil sump or, in the case of modified embodiments, over the entire oil sump in the axial direction. By arranging in the same axial section of gear compartment cooling section and oil sump or oil sump section is achieved that the oil sump and thus the transmission oil can be cooled particularly effectively.

It is particularly preferred that the gear compartment cooling section is arranged at least in sections in a bottom region of the gear compartment. After the transmission oil accumulates in the oil sump, the most effective cooling of the transmission oil is achieved when the transmission compartment cooling section is located in the bottom portion of the transmission compartment. The gear compartment cooling section may be limited to the floor area. However, it is also possible for the gear compartment cooling section to extend into further regions of the gearbox area. For example, it is possible for the gear compartment cooling section to be designed to run continuously around the main axis and / or surround the gear space.

In a preferred constructional realization, the gear compartment cooling section has at least one segment of a circular channel or an entire circular channel, the circular channel extending in the direction of rotation about the gear compartment. Particularly preferably, the circular ring channel is arranged coaxially and / or concentrically to the main axis.

The cooling arrangement preferably has a fluid cooling jacket which encloses the electric motor. The fluid cooling jacket is traversed by the cooling fluid. By enclosing the stator, the stator and thus the electric motor are actively cooled by the fluid cooling jacket. the fluid cooling jacket and the gear compartment cooling section may be fluidly connected and / or use the same cooling fluid.

In a preferred structural realization, the gear compartment cooling section is designed as an axial extension of the fluid cooling jacket. The gear chamber cooling section may have the same diameter, in particular inner diameter, as the fluid cooling jacket. Alternatively, the gear compartment cooling section may, for example, have a smaller diameter if this is permitted, conditioned or required by the structural conditions.

Particularly preferably, the oil circuit to a transmission oil cooling line, which is arranged between the oil sump and the rotor shaft and which is rectilinear to the fluid cooling jacket. In particular, the transmission oil cooling line of the fluid cooling jacket are in thermal contact, so that the transmission oil is cooled in the transmission oil cooling line through the fluid cooling jacket. In particular, a transmission oil temperature at the beginning of the transmission oil cooling line is greater than a transmission oil temperature at the end of the transmission oil cooling line. In particular, the temperature difference is more than 10 ° C, preferably more than 25 ° C.

It is preferred that the drive module comprises an oil pump, wherein the oil pump actively promotes the transmission oil in the oil circuit. In principle, it can be provided that the oil pump is arranged in the gear chamber. However, after this position could affect the cooling of the transmission oil in the transmission chamber, it is preferable that To arrange oil pump outside the gear compartment and connect via an oil line with the gear compartment, in particular with the oil sump, fluidically. The oil circuit thus runs from the gear chamber, via the oil line to the oil pump and subsequently, in particular directly or indirectly, in the rotor shaft.

Optionally, in addition, it is proposed that the drive module has an oil cooling jacket section, wherein the oil cooling jacket section is fluidly arranged in the oil circuit between the gear chamber and the hollow shaft. In this case, the transmission oil preferably flows from the transmission chamber via the oil cooling jacket section into the rotor shaft. The oil cooling jacket portion is structurally arranged to surround the fluid cooling jacket so that the cooling fluid from the cooling assembly cools the transmission oil in the oil cooling jacket portion. Preferably, the oil cooling jacket section is arranged coaxially and / or concentrically with the fluid cooling jacket.

It is a consideration of the embodiment that through the use of the oil cooling jacket section, the transmission oil can be more actively cooled by the cooling arrangement, so that subsequently also the cooling of the rotor shaft, the rotor and thus of the electric motor is improved. The improved cooling is also achieved by constructive redesign of the oil circuit and the cooling arrangement, so that this is also feasible cost.

It is preferably provided that extends with respect to an axial extent of the oil cooling jacket section more than 50% over the axial length of the fluid cooling jacket. In particularly preferred embodiments of the invention, the oil cooling jacket portion is even formed equal to the axial width of the cooling jacket or even larger than the axial width of the cooling jacket to further improve the cooling.

In a preferred embodiment of the invention, the fluid cooling jacket has an outer circumferential surface, wherein the oil cooling jacket section has a sleeve with an inner peripheral surface, wherein the transmission oil is guided between the outer peripheral surface and the inner circumferential surface. In this way, a surface cooling of the transmission oil is possible. In addition, the thermal resistance between the fluid cooling jacket and the oil cooling jacket section is very small.

In a preferred embodiment of the invention Strömungsumlenkelemente are provided, wherein the Strömungsumlenkelemente between the sleeve, in particular the inner peripheral surface, and the fluid cooling jacket, in particular the outer peripheral surface, are arranged. By Strömungsumlenkelemente the fluidic path for the transmission oil is extended in the oil cooling jacket section, so that the cooling of the transmission oil is improved.

In a preferred structural realization of the invention, the Strömungsumlenkelemente are formed as webs, which are oriented in the axial direction and / or parallel to the main axis. Particularly preferably, first webs extend from an exit end region of the oil cooling jacket section and second webs extend from an inlet end region of the oil cooling jacket section, wherein the first and second webs mesh in a comb-like manner in order to lengthen the fluidic path.

In a possible structural embodiment of the invention, the oil circuit is guided so that the transition from a static oil circuit section takes place directly into the rotor shaft.

In an alternative structural embodiment of the invention, the drive module has an output shaft, wherein the output shaft is guided coaxially and / or concentrically in the rotor shaft, in particular in the hollow shaft. Preferably, the output shaft transmits a portion of the drive torque from the electric motor. It is envisaged that the oil circuit is first guided by a static oil circuit section into the output shaft and subsequently into the rotor shaft. For example, a rotary feedthrough may be arranged between the static oil circuit section and the output shaft.

In a particularly preferred embodiment of the invention, the drive module is designed as an electrical axle for a vehicle in order to supply two driven wheels of an axle, in particular a front axle or rear axle, with the drive torque. The partial transmission has a differential stage and two output shafts, wherein the differential stage distributes the drive torque to the two output shafts. Preferably, the differential stage is designed as a planetary differential stage. One of the output shafts, in particular the output shaft, is guided coaxially and / or concentrically through the rotor shaft and / or hollow shaft.

The concept for rotor shaft cooling with actively cooled transmission oil is to pre-cool transmission oil from the transmission housing, which is sealed relative to an electric motor housing, in the transmission area by means of cooling channels / cooling medium still in the gear compartment. In a further step, the transmission oil is conducted along the cooling fluid passages through the E-machine housing in the electric motor area into a reservoir / sump. By Passing the gear oil to the cooling fluid channels, the gear oil can be actively cooled and heat dissipated. By means of oil pump and rotating union, the cooled transmission oil is then led from the pump oil reservoir / sump into the drive shaft. Via appropriately arranged inlet / outlet bores, the gear oil is fed into the single-sided sealed rotor shaft. When passing through the rotor shaft towards the gearbox, the cooled transmission oil absorbs waste heat from the rotor and is returned to the gear compartment.

• 1 eine schematische Darstellung eines Antriebsmoduls als ein Ausführungsbeispiel der Erfindung;
• 2 eine schematische Längsschnittdarstellung eines weiteren Antriebsmoduls als ein weiteres Ausführungsbeispiel der Erfindung;
• 3 eine schematische dreidimensionale Darstellung von dem Antriebsmodul.

Further features, advantages and effects of the invention will become apparent from the following description of preferred embodiments of the invention and the accompanying figures. These show:

• 1 a schematic representation of a drive module as an embodiment of the invention;
• 2 a schematic longitudinal sectional view of another drive module as a further embodiment of the invention;
• 3 a schematic three-dimensional representation of the drive module.

The 1 shows a schematic representation of a drive module 1 which is formed as an electrical axis. The drive module 1 has an electric motor 2 with a rotor 3 and a stator 4 on. The electric motor 2 serves to provide a drive torque for a vehicle, which is not shown. The electric motor 2 is in an engine room 26 in an electric motor area 32 of the drive module 1 arranged.

The drive module 1 has two output shafts 5 a . b on, which direct the drive torque on driven wheels of the vehicle. The output shaft 5 a is coaxial and / or concentric with the electric motor 2 arranged. More specifically, the drive module has 1 a rotor shaft 6 on which with the rotor 3 is rotatably connected and which is designed as a hollow shaft. The output shaft 5a runs coaxially and concentrically with the rotor shaft 6 , so that between the rotor shaft 6 and the output shaft 5a an annulus 7 is trained.

On the rotor shaft 6 is a gear section 8th rotatably mounted, which a sun gear and / or Zentralradabschnitt in a planetary gear stage 9 forms. The gear section 8th has a circumferential spur gear toothing 10 on and combs in an intervention area 23 with a plurality of planet gears 11 which rotates on a planet carrier 12 are arranged. Thus, the gear section form 8th , the planetary gears 11 and the planet carrier 12 together the planetary gear stage 9 ,

To the planetary gear stage 9 joins a differential stage 13 at. With the planet carrier 12 is a coupling sun gear 34 rotatably connected. The differential stage 13 uses another planet carrier 33 as an entrance. The coupling sun gear 34 combs with coupling planet wheels 35 , which on the further planet carrier 33 are rotatably arranged. In addition, on the other planet carrier 33 two sets of differential planet gears 14 a . b rotatably arranged, which in pairs mesh with each other. Furthermore, the differential stage 13 two sun wheels 15 a . b on, with the sun gear 15 a on the output shaft 5 a and the sun wheel 15 b on the output shaft 5 b are arranged rotationally fixed. The differential planet wheels 14 a comb with the sun wheel 15 a , the differential planet gears 14 b comb with the sun wheel 15 b , This forms the differential stage 13 a Stirnradplanetendifferentialstufe.

The differential stage 13 and the planetary gear stage 9 are as partial transmissions 40 in a gearbox 16 from a transmission area 36 of the drive module 1 arranged, which has a transmission oil atmosphere. Between the electric motor area 32 and the transmission range 36 is a partition 37 arranged. In particular, the gearbox has 16 in the bottom area an oil sump 17 with gear oil on.

Furthermore, in the drive module 1 an oil pump 18 arranged to circulate the transmission oil in an oil circuit. The oil pump 18 is in the electric motor area 32 at the transmission area 36 opposite end of the transmission range 32 arranges and pumps the transmission oil from a pump oil reservoir 39 , wherein the pump oil reservoir 39 deeper than the oil sump 17 in the gear compartment 16 lies.

The drive module 1 has a cooling arrangement 21 on which a fluid cooling jacket 24 which is coaxial and / or concentric with the electric motor 2 is arranged. The fluid cooling jacket 24 is formed as a straight hollow cylinder, wherein the inner peripheral surface flat on the stator 4 is applied. In the fluid cooling jacket 24 is a plurality of fluid channels 25 formed, which in the circumferential direction about the main axis H run. In the fluid cooling jacket 24 flows a cooling fluid, which the fluid cooling jacket 24 and thus the adjacent stator 4 cools. The fluid cooling jacket 24 , in particular the entirety of the fluid channels 25 , extends in the axial direction to the main axis H wider than the rotor 4 , The fluid cooling jacket 24 is traversed by the cooling fluid, in particular liquid, in particular a liquid based on water and / or alcohol.

In addition, the drive module has 1 a gear compartment cooling section 20 wherein the gear compartment cooling section 20 a part of the cooling arrangement 21 forms and is traversed by the cooling fluid. The gear compartment cooling section 20 is in the transmission range 36 arranged or overlapped at least with this. Along the main axis H and / or in the axial direction, the gear compartment cooling section extends 20 in the transmission area 36 , In particular, the gear compartment cooling section is 20 at least in sections or completely on the axial side with respect to the dividing wall 37 on the side of the transmission area 36 arranged. The gear compartment cooling section 20 has further fluid channels 28 on, which are in the direction of rotation about the main axis H and especially around the transmission range 36 extend. In particular, the further fluid channels 28 of the gear compartment cooling section 20 at least in sections in a bottom region of the gear compartment 16 arranged. Through the gear compartment cooling section 20 is the gear oil in the gear compartment by means of the cooling fluid 16 and especially in the oil sump 17 cooled. This ensures that the transmission oil already in the transmission range 36 is pre-cooled. The gear compartment 16 has an oil sump section 27 which is in the same axial section as the gear compartment cooling section 20 is arranged so that the oil sump 17 in the oil sump section 27 can be effectively cooled or pre-cooled.

In the embodiment in the 1 makes the gear compartment cooling section 20 an axial extension of the fluid cooling jacket 24 , It can be provided that the further fluid channels 28 the same free inner diameter as the fluid channels 25 exhibit. However, it is also possible (as in particular in the 2 shown), that the further fluid channels 28 another, in particular a smaller inner diameter than the fluid channels 25 exhibit.

The drive module 1 has an oil supply which, starting from the oil sump 17 the transmission oil by means of the oil pump 18 circulated in an oil circuit. As a flow component in the oil circuit is a supply line 19 provided, which in a bottom region rectified to the fluid cooling jacket 24 runs. The supply line 19 connects the oil sump 17 with the pump oil reservoir 39 and thus with the oil pump 18 , where the supply line 19 and thus the transmission oil in the supply line 19 when flowing past the fluid cooling jacket 24 is actively cooled by the cooling fluid. For example, the temperature difference of the transmission oil between the oil sump 17 and the oil pump 18 and / or the pump oil reservoir 39 greater than 10 ° C.

The transmission oil is starting from the oil sump 17 over the supply line 19 to the oil pump 18 passed and subsequently into the annulus 7 promoted. The transmission oil flows through the annulus 7 the electric motor 2 and in particular the rotor 3 in the axial direction. By flowing through with the gear oil, the rotor 3 and / or the rotor shaft 6 and thus the electric motor 2 cooled. This sets the drive module 1 an active rotor shaft cooling order. Furthermore, the rotor shaft 6 or the annulus 7 an outlet opening 22 in the axial end region to the transmission oil in the gear compartment 16 to lead. With regard to the temperature thus the warm transmission oil is first in the gear compartment 16 through the gear compartment cooling section 20 and subsequently via the supply line 19 actively cooled and only then in the annulus 7 the rotor shaft 6 and / or the hollow shaft passed to there the rotor 3 to cool actively.

The transfer of the gear oil from the oil pump 18 can via a connection line 29 be implemented, the connecting line 29 optionally directly with the rotor shaft 6 , in particular the annulus 7 connected is. Alternatively - as in the 1 is shown - the transmission oil is indirectly via a rotary feedthrough 30 in the drive shaft 5 a which is formed in sections as a hollow shaft or at least has an axially extending channel, and passed from this to the rotor shaft 6 , in particular to the annulus 7 , forwarded. The transition from the drive shaft 5 a in the rotor shaft 6 via at least one radial channel 31 which is the interior of the drive shaft 5 a with the annulus 7 fluidically connects.

In the 2 is a schematic longitudinal sectional view of another embodiment of the drive module 1 shown. Same components or areas will be in the 2 with the same reference numerals as in the 1 provided so that reference is made to the relevant description. In contrast to the embodiment in the 1 is the gear compartment 16 in the floor area over a divider 31 divided in the axial direction, wherein the oil sump portion 27 is arranged higher than the remaining area of the gear compartment 16 with the oil sump 17 , The gear compartment cooling section 20 is here on the oil sump section 27 limited in the axial direction. However, the supply branches 19 so that transmission oil from both the oil sump section 27 as well as the remaining gear compartment / oil sump 17 through the oil pump 18 in the direction of the rotor shaft 6 is transported.

The 3 shows a three-dimensional representation of the drive module 1 , wherein it can be seen that the drive module 1 and in particular the electric motor area 32 and the transmission range 36 are each cylindrical in shape and / or occupy a cylindrical shape.

It can also be seen that the oil pump 18 in a corner area 38 from the drive module 1 is arranged and the transmission oil through the connecting line 29 over the drive shaft 5 a in the rotor shaft 6 promotes.

LIST OF REFERENCE NUMBERS

1

drive module

2

electric motor

3

rotor

4

stator

5 a, b

output shafts

6

rotor shaft

7

annulus

8th

gear portion

9

Planetary gear stage

10

spur

11

planetary gears

12

planet carrier

13

differential stage

14a, b

Differential pinion gears

15 a, b

sun gears

16

gear compartment

17

oil sump

18

oil pump

19

supply

20

Transmission compartment cooling section

21

cooling arrangement

22

outlet

23

engagement area

24

Fluid cooling jacket

25

fluid channels

26

engine compartment

27

Oil sump section

28

further fluid channels

29

connecting line

30

Rotary union

31

divider

32

Electric motor area

33

further planet carrier

34

Koppelsonnenrad

35

Coupling planet gears

36

transmission range

37

partition wall

38

corner

39

Pump oil reservoir

H

main axis

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 102015214309 A1 [0003]

Claims (10)

Drive module (1) for a vehicle having an electric motor region (32), wherein in the electric motor region (32) an electric motor (2) is arranged, wherein the electric motor (2) has a rotor (3) and a stator (4), with a Transmission region (36), wherein the transmission region (36) has a partial transmission (40), wherein in the transmission region (36) a transmission chamber (16) is formed and wherein the partial transmission (40) in the gear compartment (16) is arranged at least in sections, with a rotor shaft (6), wherein the rotor shaft (6) with the rotor (3) of the electric motor (2) is connected and wherein the rotor shaft (3) forms an input shaft in the partial transmission (40), wherein the rotor shaft (3) as a hollow shaft is formed, with an oil circuit, wherein the transmission oil from the gear chamber (16) via the rotor shaft (6) is guided back into the gear chamber to cool the rotor (3) via the rotor shaft (6), with a cooling arrangement ( 21) for cooling the electric motor (2) with a Cooling fluid, characterized in that the cooling arrangement (21) has a gear compartment cooling section (20), wherein the gear compartment cooling section (20) is arranged in the transmission section (36) in order to cool the transmission fluid in the gear compartment (16) with the cooling fluid. Drive module (1) after Claim 1 characterized in that the gear compartment (16) forms an oil sump portion (27), wherein the gear compartment cooling portion (20) is disposed in the same axial portion of the drive module (1) as the oil sump portion (27). Drive module (1) according to one of the preceding claims, characterized in that the gear compartment cooling section (20) is arranged at least in sections in a bottom region of the transmission region (36). Drive module (1) according to one of the preceding claims, characterized in that the gear chamber cooling section (20) has at least one segment of a circular channel or a circular channel, wherein the circular channel extends around the gear chamber (16). Drive module (1) according to one of the preceding claims, characterized in that the cooling arrangement (21) has a fluid cooling jacket (24), wherein the fluid cooling jacket (24) surrounds the electric motor (2) to cool the stator (4) with the cooling fluid . Drive module (1) after Claim 5 characterized in that the gear compartment cooling section (20) is formed as an axial extension of the fluid cooling jacket (24). Drive module (1) according to any one of the preceding claims, characterized by a Ölkühlmantelabschnitt, wherein the oil cooling jacket in the oil circuit fluidly between the gear chamber (16) and the rotor shaft (6) is arranged and wherein the Ölkühlmantelabschnitt the fluid cooling jacket (24) encloses the transmission oil to cool with the cooling fluid. Drive module (1) according to one of the preceding claims, characterized in that the oil circuit is guided by a static oil circuit section in the rotor shaft (6). Drive module (1) according to one of the preceding Claims 1 to 7 , characterized in that the drive module (1) has an output shaft (5a), wherein the output shaft (5a) in the rotor shaft (6) is arranged, wherein the oil circuit of a static oil circuit section via the output shaft (5a) in the rotor shaft (6 ) is guided. Drive module (1) according to one of the preceding claims, characterized in that the drive module (1) is designed as an electrical axis and that the partial transmission (40) has a differential stage (13) and two output shafts (5a, b), wherein the differential stage (13) the drive torque distributed to the two output shafts (5a, b) and wherein one of the output shafts (5a) or the output shaft (5a) through the rotor shaft (6) is guided.

Images