Gearbox housing, traction drive and motor vehicle

Abstract

The invention relates to a transmission housing (GG) for a traction drive (TA) of an at least partially electrically driven motor vehicle (KFZ), comprising: a wall (WA) for covering an end face (SS) of an electric machine (EM), a closed edge passage opening (DGO) being formed in the wall (WA) for the passage of a shaft (WE); an inverter receptacle (IA) which adjoins the wall (WA) and which extends parallel to the longitudinal direction of the channel opening (DGO) and / or to the axial extent of the channel opening (DGO), the inverter receptacle (IA) having an intermediate wall (ZW) on the side facing the longitudinal direction of the channel opening (DGO), which intermediate wall is L-shaped or C-shaped at least in sections, and at least partially surrounds the channel opening (DGO) and / or an axial extent of the channel opening (DGO).

Description

Gearbox housing, traction drive system and motor vehicle Technical Field

[0001] This invention relates to a transmission housing for a traction drive system in a motor vehicle that is at least partially electrically driven, the transmission housing reducing the installation space required for the traction drive system. The invention further relates to a traction drive system having a transmission housing. The invention also relates to a motor vehicle having a traction drive system according to the invention. Background Technology

[0002] Traction drive units and housings for traction drive units are known in principle. For example, US 2017 291482 A1 discloses a traction drive unit in which the motor, transmission, and inverter are arranged side by side, with the transmission positioned between the inverter and the motor. This arrangement is chosen to distribute weight evenly. However, this inevitably leads to a potential increase in the axial mounting space required for the traction drive unit.

[0003] Drive units in which the inverter is arranged externally as a separate component on the transmission and / or motor are also known, as preferably disclosed in EP 2 225 119 A1. This arrangement is commonly used when the inverter is purchased and simply mounted with screws in a box-like manner. However, the design and / or arrangement of the inverter on the transmission and motor may increase the installation space in the direction transverse to the longitudinal direction of the traction drive unit. Summary of the Invention

[0004] The object of the present invention is to provide a transmission housing for a traction drive unit of a motor vehicle that is at least partially electrically driven, the transmission housing having a reduced installation space.

[0005] Similarly, the object of the present invention is to provide a traction drive device that can have a reduced installation space.

[0006] Furthermore, the object of the present invention is to provide a motor vehicle that can have a traction drive device with reduced installation space.

[0007] This objective is achieved through the subject matter of the independent patent claims. Preferred developments are the subject matter of the dependent claims, the following description, and the accompanying drawings. Here, unless expressly stated otherwise in the specification, each feature may constitute an aspect of the invention individually or in combination.

[0008] In a first aspect, the present invention relates to a transmission housing for a traction drive device of at least partially electrically driven motor vehicle, the transmission housing comprising: a wall for covering an end side of a motor, wherein a closed edge channel opening for a shaft to pass through is formed in the wall; an inverter receiving portion adjacent to the wall and extending parallel to the longitudinal direction and / or the axial extent of the channel opening, wherein the inverter receiving portion has an intermediate wall on the side facing the longitudinal direction of the channel opening, the intermediate wall being at least segmentally L-shaped and / or C-shaped, and at least segmentally surrounding the channel opening and / or the axial extent of the channel opening.

[0009] In other words, a first aspect of the invention provides a transmission housing for a traction drive system of a motor vehicle, preferably at least partially electrically driven. The transmission housing has a wall configured and / or designed to cover an end side of a motor. The end side of the motor is preferably oriented in the longitudinal direction of the motor. A closed edge channel opening is formed in the wall for a shaft to pass through. The shaft may preferably be a rotor shaft of the motor's rotor. It is also conceivable that the shaft is a transmission input shaft operatively connected to the rotor. However, it is also conceivable that the transmission input shaft and the rotor shaft are formed in one piece.

[0010] The transmission housing also has an inverter receiving section. The inverter receiving section is adjacent to a wall to indirectly or directly cover the end face of the motor and extends parallel to the longitudinal direction of the channel opening and / or the axial extent of the channel opening. It is conceivable that the wall covering the end face is also a sidewall of the inverter receiving section. The axial extent of the channel opening is the space occupied by a shaft, particularly in front of the transmission input shaft, provided that the shaft is arranged within the transmission housing. Because the inverter receiving section is arranged on the wall to cover the end face of the motor, the installation space for the traction drive unit can be reduced in the radial direction.

[0011] Furthermore, the inverter receiving portion is provided with an intermediate wall on the side facing the longitudinal direction of the channel opening, the intermediate wall being at least segmentally L-shaped and / or C-shaped, and at least segmentally surrounding the channel opening and / or the axial range of the channel opening. In other words, this means that the inverter receiving portion has at least segmentally L-shaped and / or C-shaped configurations in the direction perpendicular to the longitudinal direction of the traction drive unit or perpendicular to the longitudinal axis of the channel opening. In this way, the volume of the inverter receiving portion for receiving the inverter components is formed in the direction of the longitudinal axis of the channel opening or in the longitudinal range of the channel opening, such that the installation space of the traction drive unit can be reduced in its radial and / or axial directions.

[0012] Preferably, the inverter receiving portion does not protrude beyond the outer end side of the transmission housing and / or the transmission end cover disposed on the outer end side of the transmission housing, based on the axial direction extending along the longitudinal direction of the channel opening of the transmission housing. The outer end side of the transmission housing is oriented and / or formed on the side away from the wall and / or the motor. Therefore, the mounting space of the transmission housing and / or the traction drive can preferably be reduced in its axial direction.

[0013] An advantageous development of the invention lies in the formation of a recess in the wall, providing a connection between the inverter receiving portion and the outer side of the wall. The recess is preferably in the form of a closed-edge recess, but is not limited thereto. It is conceivable that the recess is open on at least one side in a direction perpendicular to the longitudinal direction of the channel opening. Therefore, the channel opening has a U-shaped configuration. The channel opening is configured to receive a connecting line for connecting the inverter arranged in the inverter receiving portion to the stator of the motor, which abuts the transmission housing. The recess is an opening in the wall parallel to the longitudinal axis of the channel opening. In this way, a direct connection between the motor and the inverter arranged in the inverter receiving portion, with reduced installation space, is possible.

[0014] In an advantageous improvement of the invention, the inverter receiving section has a receiving opening on a side facing away from the longitudinal direction of the channel opening, which can be closed by means of an inverter cover. In this way, the inverter can be arranged in the inverter receiving section in a simple manner, and is sealed in the inverter receiving section by means of the inverter cover in a dustproof and / or dielectric-proof manner. The side of the inverter cover facing away from the longitudinal direction of the channel opening also facilitates access to the inverter for maintenance.

[0015] In this context, an advantageous development of the invention is that a recess in the wall is formed between the inverter cover and the intermediate wall. In this way, a direct connection between the inverter and the motor becomes possible. The connecting wires do not need to first be led out through the side wall of the cover or inverter receiving portion before being connected to the stator via the wall. Therefore, the number of interfaces can be reduced, the risk of leakage can be lowered, and the installation space for the traction drive can be reduced.

[0016] According to an advantageous improvement of the invention, the transmission housing is provided with a connection receiving portion that at least partially abuts a wall to cover the end side of the motor and the inverter receiving portion, and extends at least segmentally between the channel opening and / or its axial range and the output shaft opening and / or its axial output shaft range formed parallel to the channel opening. The axial output shaft range is the mounting space that can preferably be occupied by the output shaft in the transmission housing when the output shaft is arranged in the transmission housing. The connection receiving portion is configured and / or designed to receive electrical components. In particular, it can be provided that EMC filters (EMC stands for Electromagnetic Compatibility) and / or plug-in connectors, especially HV-DC plug-in connectors (HV stands for High Voltage, DC stands for Direct Current), are at least partially and / or segmentally received in the connection receiving portion. Since the connection receiving portion is at least segmentally formed between the channel opening and / or its axial range and the output shaft opening and / or its axial output shaft range formed parallel to the channel opening, mounting space can be used effectively in the transmission housing.

[0017] In this context, an advantageous improvement of the invention lies in forming a connection opening between the inverter receiving portion and the connection receiving portion. Electrical connection to the inverter arranged in the inverter receiving portion can be provided via this connection opening. Therefore, the electrical connection can be achieved in a space-saving and space-reducing manner.

[0018] An advantageous development of the invention provides that the intermediate wall of the inverter receiving portion is the side wall of the connecting receiving portion. In this way, the connecting receiving portion is directly adjacent to the inverter receiving portion, thereby reducing the weight of the transmission housing.

[0019] In this context, a preferred improvement of the invention provides that the connection opening is formed in the intermediate wall. Therefore, an electrical connection can be made directly from the connection receiving portion to the inverter arranged in the inverter receiving portion, without having to first extend it from the connection receiving portion. This reduces the number of interfaces, lowers the risk of leakage, and reduces the installation space required for the traction drive unit.

[0020] According to an advantageous development of the invention, the connection receiving portion has a connection receiving opening that can be closed by means of a connection receiving cover and is formed on a side opposite to the longitudinal direction of the channel opening and / or on a side opposite to the longitudinal direction of the output shaft opening. In this way, electrical components (e.g., preferably EMC filters and / or plug-in connectors, especially HV-DC plug-in connectors) can be arranged in the connection receiving portion in a simple manner. Furthermore, subsequent maintenance work can be conveniently performed.

[0021] In a preferred embodiment of the invention, a mating recess is formed in the sidewall of the connection receiving portion. The mating recess is preferably configured and / or designed to receive a plug-in connector, particularly an HV-DC plug-in connector.

[0022] In a second aspect, the present invention relates to a traction drive for a motor vehicle that is at least partially electrically driven, the traction drive comprising: an electric motor; a transmission arranged along the axial direction of the electric motor and having a transmission housing according to the invention; a shaft guided through a channel opening and operatively connected to the rotor of the electric motor; and an inverter arranged in an inverter receiving portion and connected to the stator of the electric motor, wherein the inverter has at least one electrical component on the side facing the shaft, and the electrical component protrudes at least segmentally into short sections of an L-shaped and / or C-shaped intermediate wall or thereby formed in a volume within the inverter receiving portion.

[0023] In other words, a second aspect of the invention provides a traction drive for a motor vehicle that is at least partially electrically driven. The traction drive is configured and / or designed to drive (i.e., move) the motor vehicle. The traction drive includes an electric motor. The electric motor typically has a stator and a rotor. It is conceivable that the rotor is externally excited or permanently excited. Furthermore, the electric motor can be in the form of a radial flux motor or an axial flux motor. A radial flux motor is preferably in the form of an internal rotor.

[0024] Furthermore, the traction drive includes a transmission arranged along the axial direction of the motor and having a transmission housing according to the invention. The transmission may have transmission stages. Provided, a shaft is guided through a channel opening and operatively connected to the rotor of the motor. The shaft may preferably be the rotor shaft of the rotor or the transmission input shaft of the transmission. If the rotor shaft and the transmission input shaft are formed separately, they are operatively connected. It is conceivable that the rotor shaft and the transmission input shaft are formed in one piece.

[0025] The inverter is arranged in the inverter receiving portion of the transmission housing and is electrically connected to the stator of the motor. The inverter preferably has at least one power module. Furthermore, the inverter is provided to have at least one electrical component on the shaft-facing side, and the electrical component is provided to protrude at least segmentally and / or partially into short sections of the L-shaped and / or C-shaped intermediate wall or into a volume correspondingly formed by the intermediate wall in the inverter receiving portion.

[0026] Due to the design of the L-shaped and / or C-shaped intermediate walls, at least some of the electrical components arranged on the inverter can be located near the shaft arrangement and / or the housing area formed. In this way, the installation space of the traction drive unit can be reduced, especially in the direction perpendicular to the longitudinal direction of the traction drive unit.

[0027] Electrical components may preferably be, but are not limited to, capacitors, particularly DC link capacitors. The term "electrical component" may preferably be understood to mean a single capacitor or a group of single capacitors.

[0028] An advantageous development of the invention is that the inverter has a plurality of electrical components on one side facing the channel opening in the longitudinal direction. These electrical components are arranged spaced apart from each other and protrude into short sections of the C-shaped intermediate wall or into the volume formed by the intermediate wall in the inverter receiving portion. Thus, the electrical components surround the shaft, enabling an inverter arrangement in the transmission housing that significantly reduces installation space.

[0029] In an advantageous development of the invention, the inverter is provided to have a power electronics system, and a cooling device is formed and / or arranged between the electrical components and the power electronics system. The power electronics system includes at least one power module. However, typically three power modules are provided for the three phases of the stator. The power electronics system and components can be cooled by means of the cooling device, resulting in improved performance of the traction drive.

[0030] According to a preferred improvement of the invention, an EMC filter and / or a plug-in connector, particularly an HV-DC plug-in connector, is arranged within the connection receiving portion. EMC stands for Electromagnetic Compatibility. The EMC filter is preferably arranged between the plug-in connector and the power module to protect the power electronics system from power-related interference signals. The arrangement of the EMC filter and / or the plug-in connector within the connection receiving portion allows for a compact traction drive.

[0031] In an advantageous improvement of the invention, the slip ring module is arranged and / or formed on the axial end of the shaft opposite to the motor. The rotor or the rotor windings of the rotor can preferably be energized via the slip ring module. The rotor then inevitably takes the form of at least partially, and preferably entirely, an externally excited rotor. In other words, the slip ring module is not arranged on one side of the motor, but on one side of the transmission housing. For this purpose, a corresponding receiving portion can be formed in the transmission housing, which preferably receives carbon brushes to energize the slip ring module. Thus, the energizing device for the rotor windings can be accommodated in the transmission housing in a space-saving manner, resulting in a reduction in the installation space of the traction drive.

[0032] In this context, an advantageous development of the invention is that the shaft is in the form of a hollow shaft, and the electrical connection is guided from the slip ring module through the hollow shaft to the rotor winding, which is formed on the side facing the transmission. In other words, starting from the slip ring module, the electrical connection passes through the hollow shaft (which is the rotor shaft and / or the transmission shaft) to the axial end of the shaft formed on the rotor side, so as to electrically connect there to the rotor winding of the rotor.

[0033] A preferred improvement of the invention is that the shaft lock is arranged and / or formed on the axial end of the shaft opposite to the motor. The shaft lock can also be referred to as a rotor lock or parking lock. Therefore, the shaft lock can be arranged in the transmission housing in a way that reduces installation space.

[0034] In a third aspect, the present invention relates to a motor vehicle having a traction drive device according to the invention.

[0035] It should be noted that all features described above and below with respect to one aspect of the invention are equally applicable to any other aspect of the invention. In particular, all features of the transmission housing are equally applicable to traction drive systems and / or motor vehicles. And vice versa. Attached Figure Description

[0036] Other features and advantages of the invention will become apparent from the dependent claims and the exemplary embodiments described below. The exemplary embodiments are to be understood not as limiting, but as exemplary. They are intended to enable those skilled in the art to practice the invention. The applicant reserves the right to make one or more features disclosed in the exemplary embodiments the subject of a patent claim or to include such features in existing patent claims. The exemplary embodiments will be explained in more detail based on the accompanying drawings, in which: Figure 1 shows a view of the transmission housing; Figure 2 shows a view of the traction drive; Figure 3 shows a cross-section through the traction drive; Figure 4 shows a view of the traction drive in a direction perpendicular to its longitudinal direction; Figure 5 shows a plan view of the traction drive in a direction parallel to its longitudinal axis; and Figure 6 shows a motor vehicle having a traction drive. Detailed Implementation

[0037] Figure 1 shows the transmission housing GG of a traction drive unit TA for a motor vehicle KFZ that is at least partially electrically driven. Figure 2 shows a view of the traction drive unit TA, and Figure 3 shows a cross-section through the traction drive unit TA. Reference is made to Figures 1, 2, and 3 below.

[0038] The transmission housing GG has a wall WA, which is configured and / or designed to cover the end side SS of the motor EM. The end side SS of the motor EM is preferably oriented in the longitudinal direction of the motor EM. A closed edge channel opening DGO is formed in the wall WA for the passage of the shaft WE. In this exemplary embodiment, the shaft WE guided through the channel opening DGO is the transmission input shaft GEW, which is operatively connected to, and engages with, the rotor shaft RW of the rotor RO of the motor EM.

[0039] The transmission housing GG has an inverter receiving portion IA. The inverter receiving portion IA is directly adjacent to the wall WA to cover the end side SS of the motor EE, and extends parallel to the longitudinal direction and / or the axial range of the channel opening DGO. The wall WA covering the end side SS is also the side wall SW of the inverter receiving portion IA. The axial range of the channel opening DGO is the space occupied by the transmission input shaft GEE when it is arranged in the transmission housing GG, as can be seen in Figure 3. Because the inverter receiving portion IA is arranged on the wall WA to cover the end side SS of the motor EM, the installation space of the traction drive TA can be reduced in the direction perpendicular to the longitudinal axis LA of the traction drive TA.

[0040] Furthermore, the inverter receiving portion IA is provided with an intermediate wall ZW on the side facing the longitudinal direction of the channel opening DGO. This intermediate wall is at least segmentally L-shaped or C-shaped and at least segmentally surrounds the channel opening DGO and / or the axial range of the channel opening DGO. A C-shaped configuration of the intermediate wall ZW is shown here. In this way, the volume of the inverter receiving portion IA for receiving inverter components is formed in the direction of the longitudinal axis LA of the channel opening DGO or in the longitudinal range of the channel opening DGO, thereby reducing the installation space of the traction drive unit TA in the direction perpendicular to the longitudinal axis LA.

[0041] Based on the axial direction of the transmission housing GG (which extends in the longitudinal direction of the channel opening DGO), the inverter receiving portion IA is the outer end side of the transmission housing GG and / or does not protrude beyond the transmission end cover GAD arranged on the outer end side of the transmission housing GG. The outer end side of the transmission housing GG is oriented and / or formed on the side away from the wall WA and / or the motor EM. Therefore, the mounting space of the transmission housing GG and / or the traction drive TA can preferably be reduced in its axial direction.

[0042] Inverter IV is arranged in inverter receiving portion IA of transmission housing GG and electrically connected to stator ST of motor EM. Inverter IV has power module LM. Furthermore, inverter IV is provided to have at least one electrical component EB on the side facing shaft WE, and the electrical component EB is provided to protrude at least segmentally and / or partially into a short section of C-shaped intermediate wall ZW or into a volume correspondingly formed by intermediate wall ZW in inverter receiving portion IA.

[0043] Due to the design of the C-shaped intermediate wall ZW, at least some of the electrical components EB arranged on the inverter IV can be arranged in the housing area of ​​the transmission housing GG, which is arranged and / or formed close to the shaft WE. In this way, the installation space of the traction drive unit TA can be reduced, especially in the direction perpendicular to the longitudinal direction of the traction drive unit TA.

[0044] The electrical components EB arranged on the inverter IV can preferably be capacitors KS, particularly DC link capacitors, but are not limited thereto. The term electrical component can preferably be understood to mean capacitor KS or a group of individual capacitors KS.

[0045] A recess AN is formed in the wall WA, providing a connection between the inverter receiving portion IA and the outer side of the wall WA, wherein the outer side of the wall WA faces the stator ST of the motor EM. The recess AN is in the form of a closed-edge recess AN. The recess is configured to receive the connecting line VL (see Figure 5). The inverter IV can be electrically connected to the stator ST of the motor EM via the connecting line. The recess AN is an opening in the wall WA parallel to the longitudinal axis LA of the channel opening DGO. In this way, a direct connection between the inverter IV and the stator ST, reducing installation space, is possible.

[0046] The inverter receiving section IA has a receiving opening ANO on the side facing away from the longitudinal direction of the channel opening DGO. This receiving opening can be closed by means of an inverter cover (not shown). In this way, the inverter IV can be arranged in the inverter receiving section IA in a simple manner and closed in the inverter receiving section IA by means of the inverter cover in a dustproof and / or dielectric-proof manner. The side of the inverter cover facing away from the longitudinal direction of the channel opening DGO also facilitates access to the inverter IV for maintenance.

[0047] Furthermore, the transmission housing GG has a connection receiving portion AA, which at least partially abuts the wall WA to cover the end side SS of the motor EM and the inverter receiving portion IA, and extends at least segmentally between the channel opening DGO and / or its axial range and the output shaft opening AWO and / or the axial output shaft range formed parallel to the channel opening DGO. The axial output shaft range is the mounting space that can preferably be occupied by the output shaft AS when the output shaft is arranged in the transmission housing GG. The connection receiving portion AA is configured and / or designed to receive electrical components EK. In particular, it may be provided that an EMC filter (EMC stands for Electromagnetic Compatibility) and / or a plug-in connector, especially an HV-DC plug-in connector (HV stands for High Voltage, DC stands for Direct Current), is at least partially and / or segmentally received in the connection receiving portion AA. The EMC filter is preferably arranged between the plug-in connector SV and the power module LM of the inverter IV in order to protect the power electronics system LE of the inverter IV from power-related interference signals. Since the connecting receiving part AA is formed at least in sections between the channel opening DGO and / or its axial range and the output shaft opening AWO and / or its axial output shaft range formed parallel to the channel opening DGO, the mounting space can be effectively used in the transmission housing GG.

[0048] The intermediate wall ZW of the inverter receiving part IA is also the side wall SW of the connecting receiving part AA. In other words, the connecting receiving part AA is directly adjacent to the inverter receiving part IA. Therefore, the walls of the transmission housing GG can be reduced, which can have a favorable effect on the installation space and weight of the transmission housing GG.

[0049] The solution involves forming a connection opening VBO in the intermediate wall ZW. Therefore, an electrical connection can be made directly from the EMC filter (EMC) to the inverter IV located in the inverter receiving section IA, without first needing to extend it from the connection receiving section AA. This reduces the number of interfaces, lowers the risk of leakage, and reduces the installation space required for the traction drive unit TA.

[0050] A mating recess is formed in the sidewall of the connection receiving portion AA. The mating recess is configured and / or designed to receive a plug-in connector SV.

[0051] As further seen in Figure 3, the slip ring module SRM is arranged and / or formed on the axial end AE of the transmission input shaft GEW, away from the motor EM. The rotor RO can preferably be energized via the slip ring module SRM. The rotor RO then inevitably takes the form of an externally excited rotor RO, at least partially and preferably entirely. Both the transmission input shaft GEW and the rotor shaft RW are hollow shafts. Starting from the slip ring module SRM, a conductive connection VE extends through the hollow shaft to the distal axial end DAE of the rotor shaft RW, which is formed on the rotor side or away from the transmission housing GG, so as to be electrically connected there to the rotor windings (not shown) of the rotor RO. In other words, the slip ring module SRM is not arranged on the side of the motor EM, but on the side of the transmission housing GG. For this purpose, a corresponding receiving portion can be formed in the transmission housing GG, which preferably receives at least one carbon brush KB to energize the slip ring module SRM. Therefore, the energizing device for the rotor winding can be housed in the transmission housing GG in a space-saving manner, resulting in a reduction in the installation space of the traction drive unit TA in its axial direction.

[0052] Furthermore, it is provided that the shaft lock WS is arranged and / or formed on the axial end of the transmission input shaft GEW away from the motor EM. The shaft lock WS can also be referred to as a rotor lock or parking lock. Therefore, the shaft lock WS can be arranged in the transmission housing GG in a way that reduces the installation space.

[0053] Figure 4 shows a view of the traction drive unit TA in a direction perpendicular to its longitudinal direction. From this view, it is clear how the electrical components EB, in particular the capacitors of the inverter IV, are engaged in the short section of the C-shaped intermediate wall ZW or in the resulting volume in the inverter receiving section, and at least segmentally around the transmission input shaft GEW, so that the inverter IV can be arranged close to the transmission shaft.

[0054] Inverter IV has a power electronics system LE, wherein a cooling device KUE is formed and / or arranged between the electrical components EB and the power electronics system LE. The power electronics system LE includes at least one power module. However, typically three power modules are provided for the three phases U, V, and W of the stator ST. The power electronics system LE and the electrical components EB can be cooled by means of the cooling device KUE, which results in improved performance of the traction drive TA.

[0055] Figure 5 shows a plan view of the traction drive unit TA in a direction parallel to its longitudinal axis. The integration of the shaft lock WS and slip ring module SRM into the transmission housing demonstrates that the traction drive unit TA has reduced installation space in its axial direction.

[0056] Figure 6 shows a motor vehicle KFZ with a traction drive unit TA.

Claims

1. A transmission housing (GG) for a traction drive (TA) of a motor vehicle (KFZ) that is at least partially electrically driven, the transmission housing comprising: A wall (WA) for covering the end side (SS) of a motor (EM), wherein a closed edge channel opening (DGO) for a shaft (WE) to pass through is formed in the wall (WA), an inverter receiving portion (IA) adjacent to the wall (WA) and extending parallel to the longitudinal direction of the channel opening (DGO) and / or the axial range of the channel opening (DGO), wherein the inverter receiving portion (IA) has an intermediate wall (ZW) on the side facing the longitudinal direction of the channel opening (DGO), the intermediate wall being at least segmentally L-shaped or C-shaped and at least segmentally surrounding the channel opening (DGO) and / or the axial range of the channel opening (DGO).

2. The transmission housing as claimed in claim 1, characterized in that, The transmission housing (GG) has a connection receiving portion (AA) that at least partially abuts the wall (WA) to cover the end side (SS) of the motor (EM) and the inverter receiving portion (IA), and extends at least segmentally between the channel opening (DGO) or its axial range and the output shaft opening (AWO) and / or the axial output shaft range formed parallel to the channel opening (DGO).

3. The transmission housing as described in claim 2, characterized in that, The intermediate wall (ZW) of the inverter receiving section (IA) is the side wall of the connection receiving section (AA).

4. The transmission housing as described in claim 2 or 3, characterized in that, A connection opening (VBO) is formed between the inverter receiving section (IA) and the connection receiving section (AA).

5. The transmission housing as described in claim 4, characterized in that, The connection opening (VBO) is formed in the intermediate wall (ZW).

6. The transmission housing as claimed in any one of claims 2 to 5, characterized in that, The connection receiving part (AA) has a connection receiving part opening that can be closed by means of a connection receiving part cover and is formed on a side opposite to the longitudinal direction of the channel opening (DGO) and / or the longitudinal direction of the output shaft opening (AWO).

7. The transmission housing as claimed in any one of claims 2 to 6, characterized in that, The insertion recess is formed in the side wall of the connection receiving part (AA).

8. A traction drive (TA) for a motor vehicle (KFZ) that is at least partially electrically driven, the traction drive comprising: An electric motor (EM), a transmission arranged along the axial direction of the electric motor (EM) and having a transmission housing (GG) as described in any of the preceding claims, a shaft (WE) guided through the channel opening (DGO) and operatively connected to the rotor (RO) of the electric motor (EM), and an inverter (IV) arranged in the inverter receiving portion (IA) and connected to the stator (ST) of the electric motor (EM), wherein the inverter (IV) has at least one electrical component (EB) on the side facing the shaft (WE), and the electrical component (EB) protrudes at least segmentally into a short section of the L-shaped and / or C-shaped intermediate wall (ZW) and / or thereby formed in a volume within the inverter receiving portion (IA).

9. The traction drive device as described in claim 8, characterized in that, The inverter (IV) has multiple electrical components (EB) on one side facing the channel opening (DGO) in the longitudinal direction. These electrical components are arranged spaced apart from each other and protrude into a short section of the C-shaped intermediate wall (ZW).

10. The traction drive device as described in any one of claims 8 and 9, characterized in that, The inverter (IV) has a power electronics system (LE), and a cooling device (KUE) is formed and / or arranged between these electrical components (EB) and the power electronics system (LE).

11. The traction drive device as described in any one of claims 8 to 10, characterized in that, An EMC filter (EMC) and / or a plug-in connector (SV) are arranged in the connection receiving part (AA).

12. The traction drive device as described in any one of claims 8 to 11, characterized in that, The slip ring module (SRM) is arranged and / or formed on the axial end of the shaft (WE) opposite to the motor (EM).

13. The traction drive device as described in claim 12, characterized in that, The shaft (WE) is in the form of a hollow shaft, and the electrical connection (VE) is guided from the slip ring module (SRM) through the hollow shaft to the rotor winding, which is formed on the side facing the transmission housing (GG).

14. The traction drive device as described in any one of claims 8 to 13, characterized in that, A shaft lock (WS) is arranged and / or formed on the axial end of the shaft (WE) opposite to the motor (EM).

15. A motor vehicle (KFZ) having a traction drive (TA) as claimed in any one of claims 8 to 14.

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