Bulkhead for a motor vehicle body, motor vehicle and method

Abstract

The invention relates to a bulkhead (6) for a motor vehicle body (2), having a bulkhead lower part (24), having a bulkhead upper part (25) which extends further upwards in the vertical direction (13) of the vehicle than the bulkhead lower part (24), and having a connecting part (26) via which the bulkhead lower part (24) and the bulkhead upper part (25) are connected to one another, wherein the connecting part (26) projects obliquely or perpendicularly from the bulkhead lower part (24) and the bulkhead upper part (25) and has a media feed-through opening (27) through which at least one line element can be passed for connecting a first component (18) to be arranged in front of the bulkhead (6) in the vehicle longitudinal direction (5) and a second component (20) to be arranged behind the bulkhead (6) in the vehicle longitudinal direction (5), and through which, if required, further line elements can be passed for connecting further components which are arranged in front of or behind the bulkhead (6) in the vehicle longitudinal direction (5).arranged behind the end wall (6).

Description

The invention relates to an end wall for a motor vehicle body according to the preamble of claim 1. Furthermore, the invention relates to a motor vehicle having such an end wall according to claim 5 and to a method for producing a motor vehicle having a body shell with a floor assembly according to claim 6.DE 10 2017 119 128 B4 discloses a body structure of an electric vehicle, having an end wall which delimits a passenger compartment in the front direction and having longitudinal members which extend forwards as viewed from the end wall, and having a floor group which extends rearwards as viewed from the end wall and on which a traction battery of the electric vehicle can be mounted.Furthermore, a group of motor vehicles can be seen as known from DE 10 2015 210 330 A1, wherein the motor vehicles of each group have at least one module which is designed as a common part.Furthermore, DE 100 52 105 A1 discloses a separating element between the engine compartment and the passenger compartment of a motor vehicle, wherein the separating element has at least one air duct with at least one outlet opening to the passenger compartment.In addition, DE 10 2008 039 622 A1 discloses an arrangement in a motor vehicle having a vehicle end wall, in which arrangement a passage opening is provided, and a cover for the passage opening, in which arrangement an opening is provided, wherein a unit on the engine compartment side is connected to a unit on the passenger compartment side via the opening and the passage opening.Furthermore, EP 0 124 093 A2 discloses a pre-assembled structural unit for the cockpit region of motor vehicles.It is the object of the invention to provide an end wall for a motor vehicle body, a motor vehicle and a method for producing a motor vehicle having a body shell with a floor assembly, so that the production cost of the motor vehicle can be kept particularly low.This object is achieved according to the invention by an end wall for a motor vehicle body having the features of patent claim 1, by a motor vehicle having an end wall having the features of patent claim 5 and by a method for producing a motor vehicle having a body shell with a floor assembly having the features of patent claim 6. Advantageous embodiments of the invention are the subject matter of the dependent claims and the description.A first aspect of the invention relates to an end wall for a motor vehicle body, in particular for a floor assembly of the motor vehicle body. The motor vehicle body is understood to mean a preferably self-supporting body for a motor vehicle or the motor vehicle. The body can also be referred to as body shell. Preferably, the motor vehicle body, in particular in its completely produced state, has the front wall.Preferably, the front wall, in particular in its installation position in the motor vehicle, is provided for delimiting or forming an interior of the motor vehicle forwards in the vehicle longitudinal direction of the motor vehicle. In other words, the interior can be delimited or bounded in the vehicle longitudinal direction toward the front by the front wall. The interior is thus arranged behind the front wall in the longitudinal direction of the motor vehicle. The interior space, which can also be referred to as a vehicle interior space, is understood in the present case to mean a passenger space or a passenger space. Preferably, a front space of the motor vehicle extends in front of the front wall in the longitudinal direction of the vehicle, wherein the front space can also be referred to as an exterior space. Thus, the front wall delimits or forms the front space, for example, toward the rear in the vehicle longitudinal direction. The end wall is thus provided in particular for separating the interior space from the front space.The front wall has at least one front wall lower part and at least one front wall upper part, which extends further upward at least in regions in the vehicle vertical direction than the front wall lower part. This means that at least a partial region of the front wall upper part, in particular in the installation position of the front wall in the motor vehicle body or the motor vehicle, is arranged further upward in the vehicle vertical direction than the front wall lower part. In other words, the front wall upper part is arranged at least in regions further upward in the vehicle vertical direction of the motor vehicle than the front wall lower part. The end wall upper part can also be referred to as the upper section of the end wall and the end wall lower part can also be referred to as the lower section of the end wall.Furthermore, the end wall has at least one connecting part, via which the end wall lower part and the end wall upper part are connected to one another, for example directly. In other words, the connecting part of the end wall adjoins the end wall lower part and the end wall upper part, wherein the connecting part is arranged at least in regions between the end wall lower part and the end wall upper part in the vehicle vertical direction. For example, the connecting part adjoins the front wall upper part in the vehicle vertical direction downwards and adjoins the front wall lower part in the vehicle vertical direction upwards. The end wall lower part, the end wall upper part and the connecting part can be formed separately from one another or can be formed integrally together. The connecting part can thus be formed integrally on the end wall lower part and integrally on the end wall upper part, as a result of which the end wall upper part and the end wall lower part can be connected integrally to one another. Thus, it is provided, for example, that the end wall is formed in one piece. Alternatively, the end wall can also be formed in multiple pieces.In order to be able to keep the production effort, in particular the assembly effort, of the motor vehicle particularly low, it is provided according to the invention that the connecting part protrudes obliquely or perpendicularly from the end wall lower part and the end wall upper part. In other words, the connecting part extends obliquely or perpendicularly to the end wall lower part and the end wall upper part. The connecting part has at least one, in particular horizontally arranged, medium passage opening, which can also be referred to as a medium passage opening. In other words, the medium passage opening is arranged in the connecting part or formed by the connecting part, in particular completely. In other words, an axial direction of the media passage opening extends obliquely or perpendicularly to the end wall lower part and the end wall upper part. At least one line element for, for example, data-transmitting, electrical and / or fluidic connection of a first component, which is to be arranged or arranged in particular in the installation position of the front wall in the motor vehicle body or the motor vehicle, in the vehicle longitudinal direction in front of the front wall, and a second component, which is to be arranged or arranged in particular in the installation position of the front wall in the motor vehicle body or in the motor vehicle, in the vehicle longitudinal direction behind the front wall, can be passed through the medium passage opening. This means that the components can be connected or are connected or are connected to one another via the media passage opening, in particular in a data-transmitting, electrical and / or fluidic manner. In other words, a data-transmitting, electrical and / or fluidic connection running at least in regions downwards in the vehicle vertical direction can be effected or brought about between the components by the media passage opening.If necessary, further line elements for connecting further components, for example main control units and / or power distributors, which are arranged in front of or behind the end wall in the longitudinal direction of the vehicle, can be led through the medium passage opening or introduced as direct contacting.The invention is based in particular on the following findings and considerations: in conventional vehicle production, serial mounting can be provided, in which, for example, manual mounting of a cable harness including front wall passage, high time with drive and chassis, small-part mounting of individual components of an interior of the motor vehicle is carried out successively and / or further, separate line passages of the front wall are carried out. This can usually result in a particularly high time requirement, for example for the manual mounting of the cable harness, in particular its front wall passages. Furthermore, a particularly high technical outlay may be necessary for sealing off all line passages by the end wall.In contrast, the end wall according to the invention allows the components to be connected to one another via the media passage opening, for example via a connection field arranged in the media passage opening, with particularly low outlay. This integrated and horizontally oriented connection field can have the at least one line element for connecting the components. This connection field can thus be understood to mean a central module interface, in order to restrict, for example, all line passages of the end wall to an opening, in particular precisely one opening, in the form of the media passage opening. These line passages can comprise connections to a drive and / or energy module of the motor vehicle. Because the media passage opening is arranged in the connecting part or because the connecting part has the media passage opening, the media passage opening faces downward in the vehicle vertical direction of the motor vehicle. The components can therefore be connected to one another with a particularly low outlay, in particular a small-part passage of individual line elements in construction spaces which are difficult to achieve can be avoided in this case. A number of assembly steps for connecting the components and thus for example for the connection pad can be kept particularly low, as a result of which for example only one such assembly step, in particular in the vertical direction, can be necessary. This offers the possibility that a large module having the second component, which can also be referred to as a mounting module, can be joined vertically from top to bottom with respect to the vehicle vertical direction to the motor vehicle body, in particular the floor assembly. Furthermore, a module having a first component, which can also be referred to as a first module, can be joined vertically from bottom to top with respect to the vehicle vertical direction. These two peripheries in the form of the aforementioned modules or components can be connected to one another via the media passage opening, in particular via the connection field arranged in the media passage opening, of the end wall, for example above an end wall cross member, in particular in a data-transmitting, electrical and / or fluidic manner. A simplification of the line passages through the end wall and a particularly reduced assembly time associated therewith can thus be achieved. This can reduce costs, in particular reduce manufacturing costs of the motor vehicle. Overall, it can be seen that a vehicle concept of the motor vehicle can be effected with stronger or particularly strong modularization of systems of the motor vehicle in order to simplify vehicle assembly and in particular to reduce a number of parts of the motor vehicle. In particular, a central module interface in the form of the said connection pad, which is arranged or is to be arranged in the medium passage opening, can thus be made possible in the region of the end wall.Furthermore, it is provided that the connecting part, in particular in the installed position of the front wall in the motor vehicle body or the motor vehicle, protrudes rearward, in particular obliquely or vertically, from the front wall upper part in the vehicle longitudinal direction. In other words, the connecting part adjoins the front wall upper part to the rear in the vehicle longitudinal direction. The connecting part, in particular in the installation position of the front wall in the motor vehicle body or the motor vehicle, protrudes forwards, in particular obliquely or vertically, from the front wall lower part in the vehicle longitudinal direction. In other words, the connecting part adjoins the front wall lower part in the vehicle longitudinal direction towards the front. This means that the connecting part extends in the vehicle longitudinal direction at least in regions between the front wall upper part and the front wall lower part. As a result, a mounting space for arranging or mounting the first component, for example the first module, can be created behind the end wall with respect to the vehicle longitudinal direction and under the connecting part with respect to the vehicle vertical direction. Furthermore, with respect to the vehicle longitudinal direction behind the end wall and with respect to the vehicle vertical direction above the connecting part, a mounting space for arranging or mounting the second component, for example the second module, can be created. As a result, the assembly of the motor vehicle can be particularly simplified, since the first component or the first module can be assembled from below in a particularly low-effort manner in the vertical joining direction and the second component or the second module can be assembled from above in a particularly low-effort manner in the vertical joining direction.In a further embodiment, it is provided that the axial direction of the media passage opening extends parallel to the vehicle vertical direction, in particular in the installation position of the front wall in the motor vehicle or the motor vehicle body. In other words, the axial direction of the medium passage opening and the vehicle vertical direction run parallel to one another. Alternatively or additionally, the axial direction of the media passage opening, in particular in the installed position of the front wall in the motor vehicle or the motor vehicle body, extends at an angle to the vehicle vertical direction which is less than 45 degrees, in particular less than 30, 20, 10 or 5 degrees. In other words, a main extension direction of the media passage opening runs at least substantially in the vehicle vertical direction of the motor vehicle. This means that the largest of all the vectorial components of the axial direction runs in the vehicle vertical direction of the motor vehicle. Due to the parallel arrangement or the arrangement at the angle, the manufacturing effort, in particular the assembly effort, of the motor vehicle can be kept particularly low. This is because, when joining the components or the modules, the components can be connected to one another via the media passage opening with particularly low outlay. This makes it possible to dispense with any further assembly processes for connecting the components, since the components can already be connected during the joining of the components or modules, specifically in particular when the connection field is arranged in the media passage opening. It is particularly preferably provided that the axial direction of the media passage opening runs at least substantially in the vehicle vertical direction, i.e. parallel to the vehicle vertical direction, and specifically in particular when the front wall is in its installation position in the motor vehicle body or in the motor vehicle.In a further embodiment, it is provided that the line element can be or is passed through or is passed through the media passage opening for, in particular, data-transmitting, electrical and / or fluidic, connection of a thermal management module as the first component and an interior air conditioning device as the second component. In other words, the first component is designed as a thermal management module and the second component is designed as an interior air-conditioning device.The assembly of the thermal management module and the interior air conditioning device can thus be particularly simplified, because instead of particularly complicated assembly processes for connecting the thermal management module and the interior air conditioning device to conventional front wall passages, the connection of the thermal management module and the interior air conditioning device can be effected in a particularly time-saving manner through the horizontally oriented media passage opening.The thermal management module is understood in the present case as a temperature control device by means of which at least one device, i.e. one or more devices of the motor vehicle, can be cooled and / or heated. For example, the device or one of the devices is a drive device of the motor vehicle, by means of which the motor vehicle can be driven. Thus, cold and / or heat can be made available for the drive device by means of the thermal management module. For example, the device or one of the devices is a central computer to be arranged or arranged in the interior, which can be cooled by means of coolant and / or refrigerant, for example, by means of the thermal management module. The thermal management module comprises, for example, at least one coolant circuit through which a coolant can flow and / or at least one refrigerant circuit through which a coolant can flow. The coolant is, for example, water, as a result of which the coolant circuit can also be referred to as a water circuit or water circuit.The interior air-conditioning device is understood in the present case to mean an air-conditioning device by means of which the interior can be air-conditioned or cooled and / or heated. The interior air conditioning device can therefore also be referred to as an air conditioning unit, in particular a heating air conditioning unit. Preferably, the interior air conditioning device is one of said devices. This means that the interior air-conditioning device can be heated and / or cooled by the thermal management module, in particular in order to air-condition the interior. The thermal management module can thus provide heat and / or cold to the interior air conditioning device.In a further embodiment, it is provided that the connecting part has a first support region, which points downwards in the vehicle vertical direction, in particular in the installed position of the front wall in the motor vehicle body or the motor vehicle, via which the first component is supportable or supported on the front wall, for example directly. In other words, the first support region is formed or provided for bearing the first component, for example a housing element of the first component, against the end wall. The fact that the connecting part points downward in the vehicle vertical direction can be understood in particular to mean that the first supporting region of the connecting part faces downward in the vehicle vertical direction. Furthermore, the connecting part has a second support region, which points upwards in the vehicle vertical direction, in particular in the installation position of the end wall in the motor vehicle body or the motor vehicle, by means of which second component can be or is supported, for example directly, on the end wall. In other words, the second support region is provided or formed for bearing the second component, for example a housing element of the second component, against the end wall. The fact that the second support region points upward in the vehicle vertical direction can be understood in particular to mean that the second support region points upward in the vehicle vertical direction. By supporting the respective component on the respective supporting region, the mounting of the components and thus the production of the motor vehicle can be carried out with particularly low outlay. The respective component can be moved in the respective joining direction for connecting to the floor assembly and can be placed against the respective support region when the respective component is in its respective installation position in the motor vehicle. The respective component can thus be brought into its installation position in the motor vehicle in a defined manner.A second aspect of the invention relates to a motor vehicle. Advantages and advantageous configurations of the first aspect of the invention are to be regarded as advantages and advantageous configurations of the second aspect of the invention and vice versa. The motor vehicle, in particular a body of the motor vehicle, has an end wall according to the first aspect of the invention.The motor vehicle is designed, for example, as a motor vehicle, in particular as a passenger car. For example, the motor vehicle is designed as an electrically drivable motor vehicle. This means that the motor vehicle has at least one electric machine, by means of which the motor vehicle can be driven. The motor vehicle is thus designed, for example, as a battery-electric vehicle (BEV) or as a hybrid vehicle.A third aspect of the invention relates to a method for producing a motor vehicle having a body shell with a underbody, in particular according to the second aspect of the invention. The base group or the body shell has at least one end wall, in particular according to the first aspect of the invention. Advantages and advantageous configurations of the first and second aspect of the invention are to be regarded as advantages and advantageous configurations of the third aspect of the invention and vice versa.The front wall has at least one front wall lower part, at least one front wall upper part which extends further upward in the vehicle vertical direction than the front wall lower part, and at least one connecting part which protrudes obliquely or perpendicularly from the front wall lower part and the front wall upper part. Via the connecting part, the end wall lower part and the end wall upper part are connected to one another, for example directly.In order to be able to keep the production effort of the motor vehicle, in particular the assembly effort, particularly low, at least the following steps are carried out in the method, which steps can also be referred to as assembly steps:• fastening a first module having at least one first component to the floor assembly in a first joining direction running upward in the vehicle vertical direction, in particular directly, wherein at least the first component is arranged on a side of the front wall facing forward in the vehicle longitudinal direction, and• fastening a second module having at least one second component to the floor assembly in a second joining direction running downward in the vehicle vertical direction, for example directly, wherein at least the second component is arranged on a side of the front wall facing rearward in the vehicle longitudinal direction, and• Connecting, in particular data-transmitting, electrical and / or fluidic connecting, the components via a medium passage opening, in particular a horizontal or horizontal opening, of the connecting part of the end wall.This can be understood to mean, in particular, the following: the first module is fastened to the floor assembly in the first joining direction, as a result of which the first module together with the first component is connected, for example directly, to the floor assembly, in particular for fastening the first component or the first module. After the fastening, at least the first component of the first module is located on the side of the front wall facing forward in the longitudinal direction of the vehicle. The first component is thus a component to be arranged or arranged in a front space, which can also be referred to as engine compartment. The first joining direction extending upward in the vehicle vertical direction is understood in the present case to mean that the first module and thus in particular the first component is moved upward relative to the underbody in the vehicle vertical direction in order to fasten the first component or the first module to the underbody. The second module is fastened to the floor assembly in the second joining direction, whereby the second module together with the second component, in particular for fastening the second component or the second module, is connected to the floor assembly. The second component fastened to the underbody is located on the side of the front wall facing rearward in the vehicle longitudinal direction. Thus, the second component is a component to be arranged or arranged in an interior of the motor vehicle. The second joining direction running downward in the vehicle vertical direction is understood in the present case to mean that the second module, and thus in particular the second component, is moved downward relative to the underbody in the vehicle vertical direction in order to fasten the second module or the second component, for example directly, to the underbody. The first and the second joining direction thus run in the opposite direction. When the components are fastened to the base group, the components can be connected, i.e. coupled, to one another via the media passage opening of the connecting part, in particular in a data-transmitting, electrical and / or fluidic manner. An assembly process, also referred to as a joining process, for fastening the respective module or the respective component to the floor assembly can thus also comprise the connection of the components via the media passage opening, and in particular without further joining directions or joining movements of the components to be provided in addition to the joining directions. The components can thus be connected to one another via the medium passage opening with particularly low outlay. This is because the orientation of the media passage opening enables the respective joining direction of the respective component or of the respective module. The fastening of the components can be carried out in any order. Thus, for example, the second component can first be fastened to the floor assembly and then the first component can be fastened to the floor assembly or vice versa.In a further embodiment, it is provided that a, in particular pre-assembled, connection field is or is arranged in the media passage opening, via which connection field the components and / or the further components are connected to one another in a data-transmitting, electrical and / or fluidic manner, in particular through the end wall or the media passage opening. Thus, the connection field can be arranged in the media passage opening or arranged in the media passage opening before the respective fastening of the respective component or of the respective module. The, in particular horizontally oriented, connection field enables the aforementioned connection of the components via the media passage opening when the components are in their installation position in the motor vehicle or the motor vehicle body, that is to say in particular when the respective component or the respective module is fastened to the floor assembly. The connection field preferably has at least one line element, via which the components are or are connected to one another in a data-transmitting, electrical and / or fluidic manner. Of course, a plurality of such line elements can be provided, for example. The components are thus or are connected to one another in a data-transmitting manner, for example, via at least one first line element of the connection pad. Via a second line element of the connection pad, the components are or are electrically connected to one another, for example. Via at least one third line element, the components are or are connected to one another, for example, fluidically. A vehicle concept with an integrated, in particular horizontally oriented, connection field on the front wall can thus be made possible as a central module interface, in order, for example, to restrict all line passages of the front wall to an opening. For this connection field, for example, only one assembly step in the vertical direction is necessary.In a further embodiment, it is provided that the connection of the components is carried out automatically, in particular by means of direct contacting. This means that the aforementioned connection of the components, i.e. the connection of the components via the media passage opening of the connecting part of the end wall, takes place automatically, for example in the form of direct contacting. As a result, the assembly effort can be kept particularly low. The fastening of the first module in the first joining direction to the base group and the arrangement of the first component on the front-facing side of the end wall can likewise be carried out in an automated manner. Furthermore, the fastening of the second module in the second joining direction to the base group and the arrangement of the second component on the rear-facing side of the end wall can be carried out automatically.In a further embodiment, it is provided that the first module has a drive device, an electrical energy store, an axle support and / or a chassis of the motor vehicle. The first module can therefore also be referred to as a drive and / or chassis module or as a drive module. In other words, the first module is fastened to the underbody in the first joining direction running upward in the vehicle vertical direction, as a result of which the first module together with the first component, the drive device, the electrical energy store, the axle carrier and / or the chassis is fastened to the underbody in the first joining direction, that is to say is connected to the underbody. The method can thus comprise an assembly step, also referred to as a "high time". The assembly can thus be particularly simplified, because when joining the first module comprising the drive device, the electrical energy store, the axle support and / or the chassis, the first component can be connected to the second component via the media passage opening.The motor vehicle can be driven by means of the drive device. The drive device thus has at least one motor, which can be an electric machine. The electrical energy store is preferably designed as a battery or as an accumulator. The electric machine can preferably be supplied with energy, in particular chemically bound or stored in the electric energy store, by means of the electric energy store in order to drive the motor vehicle. The axle support can be understood to mean, in particular, a truck or an auxiliary frame.In a further embodiment, it is provided that the first component is a thermal management module. This means that the first module having thermal management is fastened to the base group in the first joining direction. Alternatively or additionally, it is provided, for example, that the second component is an interior air-conditioning device. This means that the second module having the interior air-conditioning device is fastened to the floor assembly in the second joining direction. The thermal management module and the interior air conditioning device can thus be connected to one another with particularly low outlay via the media passage opening when mounting the modules. Complex horizontal line passages of the end wall, which are particularly complex for assembly, can be avoided because, because the connecting part has the media passage opening, the media passage opening is a vertical line passage with respect to the vehicle vertical direction. The connection of the thermal management module and the interior air conditioning device to one another can thus already be carried out, in particular automatically, during the joining of the modules.In a further embodiment, it is provided that the second module at least partially forms a cockpit of the motor vehicle. In other words, the second module has at least part of the cockpit, in particular a pre-assembled cockpit. The second module can therefore also be referred to as an assembly cockpit or as a cockpit module. This means that when the second module is fastened to the underbody, the second module together with the cockpit or the part of the cockpit is fastened to the underbody in the second joining direction, that is to say is connected to the underbody. Alternatively or additionally, it is provided, for example, that the second module at least partially forms a cowl provided for a front windshield of the motor vehicle. In other words, the second module has at least one, in particular pre-assembled, part of the cowl, in particular a lower part with respect to the vehicle vertical direction. Thus, when attaching the second module to the underbody, the second module including the cowl or the part of the cowl is attached to the underbody, that is to say connected to the underbody, namely in the second joining direction. The second module can thus comprise a particularly large number of functions in the form of the cockpit and / or the cowl. As a result, the manufacturing effort of the motor vehicle can be kept particularly low, because in one assembly step, namely when arranging the second module on the floor assembly, it is thus already possible to implement a particularly large number of functions of the motor vehicle without further assembly steps being necessary.The cockpit preferably has at least one instrument panel, which can also be referred to as dashboard. The cockpit and / or the instrument panel can have, for example, at least one central console.The cowl can be understood to mean, in particular, a windshield frame which is provided for the windshield, in particular at least for arranging the windshield. The cowl can thus be provided for connecting the front pane. The windshield may be understood to mean, in particular, a windshield of the motor vehicle.A large module in the form of the second module (cockpit / center console), preferably including the cowl structure, can thus be joined vertically from top to bottom. Furthermore, the first module can be used to drive, incl. Thermo management module, which can be joined vertically from bottom to top. These peripheries in the form of the aforementioned modules can be connected to one another via the connection field through the end wall. The connection panel is arranged, for example, above an end wall cross member in the vehicle vertical direction.Further features of the invention are evident from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination but also in other combinations or alone.The invention will now be explained in more detail on the basis of a preferred exemplary embodiment and with reference to the drawings. The following are shown: FIG. 1 is a schematic partial sectional view of a motor vehicle according to the invention; and FIG. 2 shows a schematic and perspective exploded illustration of modules of a motor vehicle according to the invention; and FIG. 3 shows a schematic partial sectional view of modules of a motor vehicle according to the invention in an exploded illustration; and FIG. 4 is a schematic illustration for illustrating a method according to the invention; and FIG. 5 is a schematic partial sectional view illustrating a method according to the invention; and FIG. 6 shows a schematic and perspective partial view of a motor vehicle according to the invention.Identical or functionally identical elements are provided with identical reference symbols in the figures.FIG. 1 shows a schematic partial sectional view of a motor vehicle 1. the motor vehicle has a motor vehicle body 2, which can also be referred to simply as a body or as a body shell. In the present case, the motor vehicle body 2 is designed as a self-supporting body. The motor vehicle has an interior 3 which can also be referred to as a vehicle interior. To illustrate the vehicle interior, a person 4 located in the interior 3 is shown in FIG. 1. The interior 3 is at least partially delimited toward the front in the vehicle longitudinal direction 5 of the motor vehicle by an end wall 6. The front wall 6 is part of the motor vehicle body 2.The motor vehicle 1 has a first module 7 and a second module 8 different from the first module 7. This can be seen particularly well in FIG. 2, in which the motor vehicle 1 is illustrated partially in an exploded illustration. In this case, FIG. 2 shows the first module 7, the second module 8 and a floor group 9 of the motor vehicle body 2 or of the body shell. The base group 9 has the end wall 6. Furthermore, the floor group 9 in the present case has two longitudinal members 10 which adjoin the front wall 6 in the vehicle longitudinal direction 5 toward the front and which can also be referred to as engine longitudinal members. The longitudinal beams 10 are connected to one another at their end pointing forward in the vehicle longitudinal direction 5 via a cross beam 11, which is designed, for example, as a bumper cross beam, which can also be referred to as a bending cross beam. Furthermore, in the exemplary embodiment, the floor group 9 has at least one floor element 12, which is designed, for example, as a main floor. The floor element 12 delimits the interior 3 at least partially downward in the vehicle vertical direction 13 of the motor vehicle.In the exemplary embodiment, the first module 7 has a drive device 14, which is designed as an electric machine. Furthermore, the first module 7 in the present case has an electrical energy store 15, which is designed as an underground store, as a result of which the electrical energy store 15 is arranged or is to be arranged under the floor element 12 in the vehicle vertical direction 13. Furthermore, the first module 7 in the present case has an axle carrier 16 and / or a chassis 17. The first module 7 can therefore be referred to as a drive and / or chassis module or as a drive module. Furthermore, the first module 7 has at least one first component 18, which is designed as a thermal management module 19 in the present case.The second module 8 has a second component 20, which is designed in the present case as an interior air-conditioning device 21. In the exemplary embodiment, it is provided that the second module 8 at least partially forms a cockpit 22 and a cowl 23 of the motor vehicle provided for a front windshield. The cockpit 22 is to be arranged or arranged in the interior 3. The second module 8 can thus also be referred to as cockpit module. As can be seen in the overview of FIGS. 1 and 2, the second module 8 is thus a module to be arranged or arranged on the interior side, in particular in the interior 3, and the first module 7 is a module to be arranged or arranged outside the interior 3.FIG. 3 shows the exploded view according to FIG. 2 in a schematic sectional view. The front wall 6 has a front wall lower part 24 and a front wall upper part 25 which extends further upward in the vehicle vertical direction 13 than the front wall lower part 24, and is therefore arranged above the front wall lower part 24 in particular in the vehicle vertical direction 13. Furthermore, the end wall 6 has a connecting part 26, via which the end wall lower part 24 and the end wall upper part 25 are connected to one another.In order to be able to produce, in particular mount, the motor vehicle 1 with particularly low outlay, it is provided that the connecting part 26 protrudes obliquely or perpendicularly from the end wall lower part 24 and the end wall upper part 25. In this case, it is provided in the present case that the connecting part 26 protrudes rearward from the front wall upper part 25 in the vehicle longitudinal direction 5 and protrudes forward from the front wall lower part 24 in the vehicle longitudinal direction 5. As can be seen in FIG. 3, the connecting part 26 thus forms a step in the end wall 6, that is to say a step shape. Via this step, the end wall lower part 24 and the end wall upper part 25 are connected to one another. As can likewise be seen in FIG. 3, the front wall lower part 24 extends at least in regions, in particular predominantly or completely, further to the rear in the vehicle longitudinal direction 5 than the connecting part 26 and / or the front wall upper part 25. An opening of the end wall 6 in the form of the media passage opening 27 is thus arranged in or at the aforementioned step. Because the connecting part 26 has the media passage opening 27 and thus the media passage opening 27 is arranged in the connecting part 26, so to speak, the media passage opening 27 is designed as a vertical opening or passage of the end wall 6 with respect to the vehicle vertical direction 13. As a result, at least one line element for, in particular, data-transmitting, electrical and / or fluidic connection of at least the first component 18 to be arranged or arranged in front of the end wall 6 in the vehicle longitudinal direction 5 and the second component 20 to be arranged or arranged behind the end wall 6 in the vehicle longitudinal direction 5 can be passed through to one another.Preferably, however, a plurality of such line elements are provided. Particularly preferably, at least one connection field is arranged, in particular pre-assembled, in the media passage opening 27, which preferably has the line element or the line elements, as a result of which the components 18, 20 can be or are connected to one another or are connected to one another via the media passage opening 27 in a data-transmitting, electrical and / or fluidic manner by means of the connection field. An axial direction 28 of the media passage opening 27 preferably extends parallel to the vehicle vertical direction 13. In other words, the axial direction 28 of the media passage opening 27 and the vehicle vertical direction 13 or a vertical axis of the motor vehicle 1 running in the vehicle vertical direction run parallel to one another. This means that the axial direction 28 runs in the vehicle vertical direction 13.Due to the fact that the connecting part 26 has the media passage opening 27 as a vertical passage of the end wall 6, a particularly advantageous method for producing the motor vehicle 1, in particular for mounting the modules 7, 8 on the floor assembly 9, can be carried out. This method is explained below. The method is illustrated in FIG. 4, in which the motor vehicle 1 is shown in a schematic partial sectional view.In the method, the first module 7 having the first component 18 is fastened to the floor assembly 9 in a first joining direction 30 running upward in the vehicle vertical direction 13, for example automatically, in particular directly. At least the first component 18 of the first module 7 is arranged here, for example automatically, on a side 6 aof the front wall 6 facing forwards in the vehicle longitudinal direction 5. Furthermore, the second module 8 having the second component 20 is fastened to the floor assembly 9 in a second joining direction 32 running downward in the vehicle vertical direction 13, for example automatically, in particular directly. At least the second component 20 is arranged here, for example automatically, on a side 6 bof the front wall 6 facing rearward in the vehicle longitudinal direction 5 and thus facing in particular the interior 3. The respective joining direction 30, 32 can thus be understood to mean a respective vertical joining direction, wherein the joining directions 30, 32 preferably run opposite to one another. At least the components 18, 20 of the modules 7, 8 are connected to one another via the media passage opening 27 during fastening or during arrangement in their respective installation position, for example automatically, optionally by means of direct contacting, in particular in a data-transmitting, electrical and / or fluidic manner.Thus, for example, a completely pre-assembled cockpit circumference in the form of the second module 8 and a drive module (drive+axels+thermal management module 19) can be connected to the floor assembly 9 in the opposite joining directions 30, 32. A course of the end wall 6, also referred to as the end wall course, and in particular the step shape caused by the connecting part 26, can likewise be seen in FIG. 4. The connecting part 26 is oriented at least substantially horizontally with respect to the vehicle vertical direction, as a result of which the medium passage opening 27 or the axial direction 28 thereof, which is also referred to as the "passage end wall", is oriented at least substantially vertically.As can be seen in FIG. 4, the connecting part 26 in the present case has a first support region 33 which points upward in the vehicle vertical direction 13 and a second support region 34 which points downward in the vehicle vertical direction 13. It is provided that the first component 18, for example a housing of the first component 18, can be or is supported on the end wall 6 via the first support region 33, in particular directly, via the first support region 33, in particular when joining the first module 7 to the floor assembly 9. It is furthermore provided that the second component 20, for example a housing of the second component 20, can be or is supported on the end wall 6 via the second support region 34, in particular directly, in particular when joining the second module 8 to the floor assembly 9. Furthermore, the second component 20, in particular the housing of the second component 20, has, for example, a second contact region 36 which is designed for supporting or for bearing on the second support region 34. Furthermore, the respective contact region 35, 36 can be designed to form the data-transmitting, electrical and / or fluidic connection between the components 18, 20, in particular by means of the connection pad. The contact region 35 can therefore also be referred to as a lower connection field or as a "connection field end wall on the outside". The contact region 36 can also be referred to as an upper connection field or as a "connection field end wall on the inside".In the exemplary embodiment, the joining of the second module 8 is carried out before the joining of the first module 7. This is illustrated in FIG. 5, in which the modules 7, 8 and the base group 9 are shown in a schematic partial sectional view. In FIG. 5, the second module 8 is already connected to the base group 9, whereas the first module 7 has not yet been connected to the base group 9 and is therefore spaced apart from the base group 9. The method, also referred to as assembly or final assembly, can thus be carried out as follows: First, the base group 9 and the, in particular pre-assembled, modules 7, 8 can be provided. The second module 8, in particular together with the second component 20, can then be joined to the base group 9 in the second joining direction 32. That is, the fastening of the second module 8 having at least the second component 20 to the floor assembly 9 can be carried out in the second joining direction 32, as a result of which at least the second component 20 is arranged on the side 6 bof the front wall 6 facing toward the rear in the vehicle longitudinal direction 5. The first module 7, in particular together with the first component 18, can then be joined to the base group 9 in the first joining direction 30. This means that the fastening of the first module 7 having at least the first component 18 to the underbody 9 can be carried out in the first joining direction 30, as a result of which at least the first component 18 is arranged on the side 6 aof the end wall 6 facing forwards in the vehicle longitudinal direction 5. During this joining or fastening, that is to say in particular when, in addition to the second module 8, the first module 7 is also brought into its installation position provided in the motor vehicle 1 or the motor vehicle body 2, when the installation position is reached, in particular by the installation position being reached, the components 18, 20 can be connected via the medium passage opening 27 of the connecting part 26 of the end wall 6, in particular without a separate joining step and in particular without a separate line passage through the end wall 6.In other words, the cockpit module in the form of the second module 8 can be joined pre-assembled from above with respect to the vehicle vertical direction 13, in particular together with the interior air-conditioning device 21, which is also referred to as a heating air-conditioning device. Subsequently, the pre-assembled first module 7, which can also be referred to as a drive module, can be joined together with the thermal management module 19, with respect to the vehicle vertical direction 13, from below with the floor assembly 9.The installation position of the modules 7, 8 is illustrated in FIG. 1, in which the joining processes mentioned have already been concluded. This is likewise illustrated in FIG. 6, which shows a schematic and perspective partial view of the motor vehicle 1, in particular of the modules 7, 8 and of the underbody 9.Overall, it can be seen that by configuring the end wall 6 and by the method, a horizontally oriented media interface in the form of the media passage opening 27 or the connection pad can be realized, which can also be referred to as core module concept. In this case, by joining the second module 8, a vertical joining of a completely pre-assembled cockpit (Incl. This is made possible by air conditioning equipment, all of the main control equipment, which is partially water-cooled for example, and a power distributor for the interior 3). In this case, all electrical and / or electronic lines and media lines which are to be guided from the interior 3 through the end wall 6 into the front region, also referred to as the outer region, can be combined to form the integrated connection field. This connection panel, together with the cockpit or an assembly referred to as an "assembly cockpit", can be joined in the vertical direction from top to bottom against a correspondingly horizontally embodied opening in the end wall 6 in the form of the media passage opening 27 and, in particular in an automated manner, screwed to the end wall 6 and preferably sealed. In the next step, the so-called "high time" can be carried out with the pre-assembled peripheries of the BEV drive (comprising a high-voltage accumulator with an integrated high-voltage accumulator periphery of the electric drive machine mounted on the front axle carrier and / or of the electric drive machine mounted on the rear axle carrier). The chassis, an integrated thermal management scope, an electric and / or electronic line package and a media line package on the high-voltage storage device, which leads from the front carriage to the rear carriage, and a counterpart to the connection field of the front wall 6, can likewise be pre-assembled in this case. This connection field can lead together all the electrical and / or electronic lines and media lines of an exterior area of the vehicle (connection cable harness front end, media lines, thermal management). The upward time can take place in the vertical direction from bottom to top, wherein a counterpart to the connection field of the end wall 6 in the form of the contact region 35 can be connected, for example partially automated or fully automated, to the previously joined connection field of the end wall 6 (for example wheel connector or the like). Further advantages of this connection field design are that an extended scope which is mounted at high time can enable a complete pre-mounting of all lines in the outer region with considerably improved accessibility, which can mean a further time saving. Furthermore, improved sound insulation of the end wall 6 from the outer region can be made possible, since apart from the media passage opening 27 there can be no further perforations of the end wall 6, in particular in the vertical region of the end wall 6. This means that the end wall 6 can be free of further apertures or through-openings with respect to the media passage opening 27. The invention can be particularly advantageous in connection with "steer by wire" and "break by wire". This is because, in principle, fewer end wall passages are required by "steer by wire" and "break by wire", which can also be collectively referred to as drive by wire, which can enable, for example, redesign of the end wall 6 or an end wall region in the form of the connecting part 26 having the media passage opening 27. A further boundary condition can be a vehicle modularization also referred to as drive-cap vehicle modularization, in which a green house, i.e. a vitrified region of the motor vehicle 1, can be joined in the final assembly after interior fitting.List of reference characters1 Motor vehicle 2 Motor vehicle body 3 Vehicle interior 4 Person 5 Vehicle longitudinal direction 6 Front wall 6 aFront-facing side 6 bBack-facing side 7 First module 8 Second module 9 Floor group 10 Longitudinal member 11 Cross member 12 Floor element 13 Vehicle vertical direction 14 Drive device 15 Electrical energy store 16 Axle carrier 17 Chassis 18 First component 19 Thermal management module 20 Second component 21 Interior air conditioning device 22 Cockpit 23 Cowl 24 Front wall lower part 25 Front wall upper part 26 Connecting part 27 Medium passage opening 28 Axial direction 30 First joining direction 32 Second joining direction 33 First support region 34 Second support region 35 First contact region 36 Second contact region

Claims

Front wall (6) for a motor vehicle body (2), having a front wall lower part (24), having a front wall upper part (25) which extends further upwards in the vehicle vertical direction (13) than the front wall lower part (24), and having a connecting part (26) via which the front wall lower part (24) and the front wall upper part (25) are connected to one another, wherein the connecting part (26) projects obliquely or perpendicularly from the front wall lower part (24) and the front wall upper part (25), characterized in that the connecting part (27) has a medium passage opening (27) through which at least one line element for connecting a first component (18) to be arranged in front of the front wall (6) in the vehicle longitudinal direction (5) and a second component (20) to be arranged behind the front wall (6) in the vehicle longitudinal direction (5) can be passed, wherein the connecting part (26) protrudes rearward from the front wall upper part (25) in the vehicle longitudinal direction (5) and protrudes forward from the front wall lower part (24) in the vehicle longitudinal direction (5).Front wall (6) according to Claim 1, characterized in that an axial direction (28) of the medium passage opening (27) extends parallel to the vehicle vertical direction (13) or at an angle which is less than 45 degrees.Front wall (6) according to Claim 1 or 2, characterized in that the line element for connecting a thermal management module (19) as the first component (18) and an interior air-conditioning device (21) as the second component (20) can be guided through the medium passage opening (27).Front wall (6) according to one of the preceding claims, characterized in that the connecting part (26) has a first support region (33) which points downwards in the vehicle vertical direction (13) and by means of which the first component (18) can be supported on the front wall (6), and a second support region (34) which points upwards in the vehicle vertical direction (13) and by means of which the second component (20) can be supported on the front wall (6).Motor vehicle (1) having an end wall (6) according to one of the preceding claims.Method for producing a motor vehicle (1) having a body shell with a base group (9), wherein the base group (9) has an end wall (6) which has an end wall lower part (24), an end wall upper part (25) which extends further upward in the vehicle vertical direction (13) than the end wall lower part (24), and a connecting part (26) which projects obliquely or perpendicularly from the end wall lower part (24) and the end wall upper part (25) and via which the end wall lower part (24) and the end wall upper part (25) are connected to one another, and wherein at least the following steps are carried out: • fastening a first module (7) having at least one first component (18) to the base group (9) in a first joining direction (30) which extends upward in the vehicle vertical direction (13), wherein at least the first component (18) is arranged on a side (6a) of the end wall (6) facing forward in the vehicle longitudinal direction (5), • fastening a second module (8) having at least one second component (20) to the floor group (9) in a second joining direction (32) extending downward in the vehicle vertical direction (13), wherein at least the second component (20) is arranged on a side (6b) of the end wall (6) facing rearward in the vehicle longitudinal direction (5), and • connecting the components (18, 20) via a media passage opening (27) of the connecting part (26) of the end wall (6).Method according to Claim 6, characterized in that a connection field is arranged in the medium passage opening (27), via which connection field the components (18, 20) and / or further components are connected to one another in a data-transmitting, electrical and / or fluidic manner.Method according to Claim 6 or 7, characterized in that the connection of the components (18, 20) is carried out automatically, in particular by means of direct contact-connection.Method according to one of Claims 6 to 8, characterized in that the first module (7) has a drive device (14), an electrical energy store (15), an axle support (16) and / or a chassis (17) of the motor vehicle (1).Method according to one of Claims 6 to 9, characterized in that • the first component (18) is a thermal management module (19) and / or the second component (20) is an interior air-conditioning device (21), and / or • the second module (8) at least partially forms a cockpit (22) and / or a cowl (23) of the motor vehicle (1) provided for a front window.

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