Method for arranging a high-voltage accumulator having a plurality of battery modules on a load-bearing structure of a motor vehicle and high-voltage accumulator arrangement

Abstract

The invention relates to a method for arranging a high-voltage accumulator (2) having a plurality of battery modules (4) on a load-bearing structure (8) of a motor vehicle (1), in which method the battery modules (4) are arranged and fixed on a base plate (3), the base plate (3) is fixed on a floor panel (7) of the load-bearing structure (8) of the motor vehicle (1), so that the base plate (3) and the floor panel (7) provide an accumulator housing which delimits an accumulator interior (9) in which the battery modules (4) are accommodated, wherein at least one connection region (5) is mechanically connected with the load-bearing structure (8), by means of which at least one connection region the high-voltage accumulator (2) can be electrically and / or fluidically connected with the motor vehicle (1).

Description

Technical Field

[0001] The present invention relates to a method for arranging a high-voltage accumulator having multiple battery modules on the load-bearing structure of a motor vehicle, and a high-voltage accumulator arrangement structure at the motor vehicle. Background Technology

[0002] A method for integrating a high-voltage accumulator into a vehicle's load-bearing structure is known from WO2019 / 091643A1. The high-voltage accumulator includes at least one accumulator module. In this method, a housing component is provided having a base plate and a frame-shaped edge surrounding the base plate. The at least one accumulator module is arranged on the housing component and / or the load-bearing structure. The edge of the housing component is arranged below and on the frame structure formed by the support members of the load-bearing structure. Furthermore, the method specifies that the housing component is fixed to the load-bearing structure when constructing an accumulator housing for the at least one accumulator module. Here, the internal space of the accumulator housing is limited by the load-bearing structure covering the bottom component of the frame structure, the housing component, and the frame structure in the passenger compartment direction of the vehicle. Summary of the Invention

[0003] The objective of this invention is to provide a method for arranging a high-voltage accumulator having multiple battery modules on a load-bearing structure of a motor vehicle, and a high-voltage accumulator arrangement structure at the motor vehicle, the method and the high-voltage accumulator arrangement structure achieving a particularly advantageous fluid connection and / or electrical connection between the high-voltage accumulator and the motor vehicle.

[0004] According to the present invention, the task is solved by the method of arranging a high-voltage accumulator having multiple battery modules on the load-bearing structure of a motor vehicle, and the arrangement structure of the high-voltage accumulator at the motor vehicle.

[0005] A first aspect of the invention relates to a method for arranging a high-voltage accumulator having multiple battery modules on a load-bearing structure of a motor vehicle, wherein the battery modules are arranged and fixed on a base plate. Each battery module may include at least one, and particularly multiple, individual battery cells. Furthermore, the method specifies that the base plate is fixed to a bottom plate of the load-bearing structure of the motor vehicle, such that the base plate and the bottom plate provide a accumulator housing. The load-bearing structure is, in particular, the body of a motor vehicle. The accumulator housing defines the internal space of the accumulator, in which the battery modules are housed. Thus, the high-voltage accumulator is a so-called housingless high-voltage accumulator, wherein the internal space of the accumulator is defined by the base plate and the bottom plate of the load-bearing structure. Therefore, the bottom plate of the load-bearing structure provides at least partially a housing for the high-voltage accumulator, thereby eliminating the need for a conventional separate housing for the high-voltage accumulator.

[0006] According to the invention, at least one connection area is mechanically connected to the load-bearing structure in the method described herein. Here, the connection area enables electrical and / or fluid connections between the high-voltage accumulator and the motor vehicle. The at least one connection area can be reliably held to the frame structure via the mechanical connection between the connection area and the load-bearing structure. The connection area may have one or more mechanical interfaces through which the electrical connection lines and / or fluid lines of the high-voltage accumulator can be connected to the electrical connection lines or fluid lines of the motor vehicle. Therefore, an electrical connection between the high-voltage accumulator and the motor vehicle can be provided through at least one electrical interface of the connection area, through which electrical energy and / or information can be exchanged between the high-voltage accumulator and the motor vehicle. A fluid connection between the high-voltage accumulator and the motor vehicle can be provided through at least one fluid interface of the at least one connection area, for example, through which cooling fluid can be exchanged between the high-voltage accumulator and the motor vehicle, thereby allowing the high-voltage accumulator to be connected to the cooling circuit of the motor vehicle. In this method, it is specifically specified that all electrical and / or fluid connections between the high-voltage accumulator and the motor vehicle are provided through the at least one connection area. Therefore, the at least one connection area enables particularly simple electrical and / or fluid contact between the high-voltage accumulator and the motor vehicle.

[0007] In another embodiment of the invention, it is advantageous to place the at least one connection region on the support structure on the outer side of the support structure opposite to the internal space of the accumulator and partially insert it into the internal space of the accumulator through a through-opening in the support structure. At least one battery module in the high-voltage accumulator, particularly the battery module of the high-voltage accumulator, can contact the at least one connection region through the area of ​​the connection region partially inserted into the internal space of the accumulator. Thus, the at least one connection region is at least substantially arranged outside the internal space of the accumulator and only partially extends into the internal space of the accumulator. Thus, the at least one connection region is at least partially limited by the battery module arranged in the internal space of the accumulator through the support structure. In this method, it is particularly specified that the at least one connection region is sealed relative to the outer side of the support structure. This ensures the fluid-tight boundary of the internal space of the accumulator. The arrangement of the at least one connection region on the outer side of the support structure achieves separate fixation of the substrate and the at least one connection region on the support structure.

[0008] In another alternative embodiment of the invention, it is advantageous to guide the at least one connection area together with the substrate toward the support structure and place it on and secure it to the support structure on the inner side of the support structure facing the internal space of the accumulator. Here, the at least one connection area may be pre-assembled on the substrate or on at least one battery module of the high-voltage accumulator. This method achieves that the boundary of the internal space of the accumulator and the electrical and / or fluid contact between the high-voltage accumulator and the vehicle can be performed with particularly few working steps, thereby allowing the high-voltage accumulator to be assembled into the vehicle particularly quickly. In the arrangement structure produced by this method, the at least one connection area is arranged completely within the internal space of the accumulator together with multiple battery modules. Therefore, the connection area can be protected from damage by the substrate and the bottom plate. Thus, a particularly secure connection between the at least one battery module or the high-voltage accumulator and the at least one connection area can be achieved.

[0009] In this context, it proves particularly advantageous to seal the at least one connection area relative to the inner side of the supporting structure. Specifically, the vehicle-side outer side of the at least one connection area can be sealed relative to the battery-side outer side of the connection area, thereby ensuring a sealed enclosure of the accumulator's internal space. By sealing the accumulator's internal space, it can be ensured that fluid connection between the high-voltage accumulator and its surrounding environment, especially the motor vehicle, is provided solely through the at least one connection area. By sealing the at least one connection area, leakage of liquid from the accumulator's internal space or the infiltration of contaminants into the accumulator's internal space can be at least substantially prevented.

[0010] Furthermore, it has proven advantageous to guide the at least one connection region around a protrusion of the support structure as the substrate approaches the support structure, at least partially introducing it into a gap in the support structure partially defined by the protrusion, and fixing it within the gap to the inner side of the support structure facing the internal space of the accumulator. In this at least partial arrangement within the gap, the at least one connection region can be protected from damage by the support structure. To enable the at least one connection region to be introduced into the gap, it can be guided around a protrusion that at least partially defines the gap. To allow the at least one connection region to be guided around the protrusion as the substrate approaches the support structure, the at least one connection region can be movably held on the substrate relative to the substrate. When the substrate approaches the support structure, the at least one connection region can be deflected to allow it to be guided around the protrusion. Once the at least one connection region has completely moved past the protrusion in the approach direction of the substrate towards the support structure, it can be moved into the gap in the support structure partially defined by the protrusion to be fixed within the gap to the inner side of the support structure.

[0011] In another embodiment of the invention, it is advantageous to provide a side recess on the inner side of the support structure along the fixing direction of the at least one connection region, with the at least one connection region at least partially disposed in the side recess. Here, the fixing direction is oblique, particularly perpendicular to the approach direction of the substrate towards the support structure. The side recess ensures that the connection region fastened to the support structure is held on the support structure by restricting the movement of the at least one connection region relative to the support structure in a first direction along the fixing direction and by restricting movement along the fixing direction in a second direction opposite to the first direction. With the aid of the side recess, in addition to the mechanical connection of the at least one connection region to the support structure, the retention of the at least one connection region on the support structure along the fixing direction can also be ensured.

[0012] In another embodiment of the invention, it is advantageous to connect two connection areas to the support structure, through which the high-voltage accumulator can be electrically and / or fluidly connected to the vehicle. Specifically, a first connection area is mechanically connected to the front region of the support structure, which defines the internal space of the accumulator forward in the longitudinal direction of the vehicle, and a second connection area is mechanically connected to the rear region of the support structure, which defines the internal space of the accumulator rearward in the longitudinal direction of the vehicle. Thus, the high-voltage accumulator can be connected advantageously to the front region of the vehicle via the front region of the support structure and to the rear region of the vehicle via the rear region of the support structure. In the front and rear regions of the vehicle, the high-voltage accumulator can be electrically connected to the corresponding electric motors driving the vehicle wheels via the respective connection areas, thereby providing the electric motors with the electrical energy stored in the high-voltage accumulator. Consequently, the wiring in the vehicle or the high-voltage accumulator can be kept particularly short because the connection areas are located particularly close to the corresponding electrical power consumption devices due to their arrangement in the front and / or rear regions of the support structure.

[0013] Another aspect of the invention relates to a high-voltage accumulator arrangement structure in a motor vehicle, the high-voltage accumulator arrangement structure having a plurality of battery modules arranged and fixed on a base plate and having a bottom plate of a load-bearing structure of the motor vehicle. The base plate is fixed to the bottom plate of the load-bearing structure, such that the base plate and the bottom plate provide an accumulator housing that defines the internal space of the accumulator, in which the battery modules can be accommodated. Thus, the bottom plate and the base plate together surround the battery modules of the high-voltage accumulator, wherein a separate accumulator housing for the high-voltage accumulator can be omitted. Consequently, the high-voltage accumulator is constructed to be particularly lightweight. In order to enable electrical and / or fluid connection between the high-voltage accumulator and the motor vehicle in a particularly simple and safe manner, according to the invention, at least one connection area of ​​the high-voltage accumulator arrangement structure is mechanically connected to the load-bearing structure, through which the high-voltage accumulator can be electrically and / or fluidly connected to the motor vehicle. All electrical and / or fluid connections between the high-voltage accumulator and the motor vehicle can be provided through the at least one connection area. Through the at least one connection area, all interfaces of the high-voltage accumulator and the motor vehicle can be arranged particularly close to each other, thereby enabling the high-voltage accumulator to make electrical and / or fluid contact with the motor vehicle particularly easily and therefore particularly quickly.

[0014] In this case, it proves particularly advantageous that the at least one connection area is threadedly connected to the load-bearing structure. This means that at least one screw connection is provided, through which the at least one connection area is held to the load-bearing structure. The screw connection achieves a particularly simple, low-cost, and quickly established reliable connection between the at least one connection area and the load-bearing structure.

[0015] In an extended embodiment of the invention, it is particularly advantageous that the at least one connection region is movably held on the substrate relative to the substrate. Here, the at least one connection region is pre-assembled on the substrate and can move toward the bottom plate in the approach direction together with the substrate. This movable arrangement of the at least one connection region on the substrate allows it to avoid at least one area of ​​the support structure, particularly guiding it around a protrusion of the support structure, as the substrate approaches the bottom plate. Therefore, this movable arrangement of the at least one connection region on the substrate simplifies both the assembly of the high-voltage accumulator due to pre-assembly and the contact between the high-voltage accumulator and the vehicle, even if the geometry of the support structure has at least one protrusion.

[0016] Preferably, the connection area is assembled or at least pre-assembled onto the support structure in one step—particularly via a fluid-tight connection. Then, in a subsequent step, the substrate is assembled or at least pre-assembled onto the support structure, particularly via a fluid-tight connection. Electrical and / or fluid connections between the connection area and corresponding components of the high-voltage accumulator are preferably made only after the step of assembling or pre-assembling the substrate onto the support structure, and can be made, if necessary, via the maintenance and repair access of the high-voltage accumulator. The maintenance and repair access can be closed, for example, using a maintenance flap—particularly in a fluid-tight manner.

[0017] The advantages and advantageous extensions of the method according to the invention will be regarded as the advantages and advantageous extensions of the high-voltage accumulator according to the invention, and vice versa.

[0018] Further features of the invention can be derived from the accompanying drawings and description. The features and combinations thereof mentioned above in the specification, as well as those mentioned below in the description and / or shown individually in the drawings, can be used not only in the combinations given separately, but also in other combinations or individually. Attached Figure Description

[0019] The invention will now be explained in more detail with reference to a preferred embodiment and the accompanying drawings. In the drawings:

[0020] Figure 1 A schematic perspective view of a motor vehicle with a high-voltage accumulator is shown, through which electrical energy can be supplied to the electric drive unit of the motor vehicle, wherein the high-voltage accumulator is arranged in the bottom area of ​​the motor vehicle.

[0021] Figure 2 A schematic top view of the bottom area of ​​a motor vehicle with a high-voltage accumulator and two connection areas is shown. The high-voltage accumulator has multiple battery modules and can be electrically and / or fluidly connected to the motor vehicle through these connection areas.

[0022] Figure 3 A schematic side view of a motor vehicle with a high-voltage accumulator is shown, in which it can be seen that the front connecting area connects the front end of the high-voltage accumulator along the longitudinal direction of the vehicle to the front area of ​​the motor vehicle, and the rear connecting area connects the rear end of the high-voltage accumulator along the longitudinal direction of the vehicle to the rear area of ​​the motor vehicle.

[0023] Figures 4a and 4b show schematic cross-sectional views of the corresponding connection structures of the front and rear connection areas in the first variant on the vehicle's load-bearing structure.

[0024] Figures 5a and 5b show schematic cross-sectional views of the corresponding connection structures of the front and rear connection areas on the load-bearing structure of the motor vehicle in the second variant.

[0025] Figures 6a to 6b A schematic cross-sectional view showing the corresponding connection structures of the front and rear connection areas in the third variant on the vehicle's load-bearing structure; and

[0026] Figures 7a to 7b A schematic cross-sectional view showing the corresponding connection structure of the front and rear connection areas on the vehicle's load-bearing structure in the fourth variant. Detailed Implementation

[0027] Components with the same function are given the same reference numerals in the figure.

[0028] exist Figure 1 The image shows a motor vehicle 1 with a modular underbody assembly, wherein the modular underbody assembly includes a high-voltage accumulator 2 integrated into the vehicle body. The high-voltage accumulator 2 includes a base plate 3 on which multiple battery modules 4 are arranged. Each battery module 4 includes at least one battery cell, and more particularly multiple battery cells, in which electrical energy can be stored. Figure 1 As can be seen, the battery module 4 of the high-voltage accumulator 2 can be arranged in the bottom area of ​​the vehicle 1 and contact the vehicle 1 through a corresponding connection area 5. Figure 2 As can be clearly seen, the battery module 4 of the high-voltage accumulator 2 is connected to the connection area 5 via a corresponding electrical connection line 6. The connection area 5 provides at least one electrical interface and / or fluid interface, through which the high-voltage accumulator 2 can be electrically and / or fluidly connected to the vehicle 1. For this purpose, the at least one electrical interface of the corresponding connection area 5 can be electrically connected to the electrical connection line 6 and to the electrical wiring of the vehicle 1. The battery module 4 is held on the vehicle 1 by the bottom plate 7 of the supporting structure 8 of the vehicle 1. The supporting structure 8 is currently the body of the vehicle 1. Figure 3 As can be clearly seen, the high-voltage accumulator 2 is integrated into the vehicle body, and in the case of this high-voltage accumulator integrated into the vehicle body, there is no separate high-voltage accumulator housing. The accumulator housing of the high-voltage accumulator 2 is provided by the base plate 3 and the bottom plate 7 of the supporting structure 8 of the vehicle 1, and the accumulator housing defines the internal space 9 of the accumulator, in which the battery module 4 is housed.

[0029] To accommodate the high-voltage accumulator 2 at the vehicle 1, the battery module 4 is pre-assembled onto the base plate 3, and the base plate 3 and battery module 4 are brought close to the bottom plate 7 of the support structure 8. The base plate 3 is then fixed to the bottom plate 7 of the support structure 8, thereby defining the internal space 9 of the accumulator between the base plate 3 and the bottom plate 7. To enable electrical and / or fluid connection between the high-voltage accumulator 2 and the vehicle 1, at least one connection area 5 is provided, through which the high-voltage accumulator 2 can be electrically and / or fluidly connected to the vehicle 1. This is achieved by mechanically connecting the connection area 5 to the support structure 8 of the vehicle 1, and also by providing fluid and / or electrical connection not only to the high-voltage accumulator 2 but also to the vehicle 1. Currently, exactly two connection areas 5 are provided, specifically a front connection area 5 and a rear connection area 5. The front connection area 5 is located at the front edge of the high-voltage accumulator 2 along the longitudinal direction x of the vehicle 1. The rear connection area 5 is located at the rear edge of the high-voltage accumulator 2 along the longitudinal direction x of the vehicle 1.

[0030] In Figure 4a to Figure 7b The different arrangements of the connecting area 5 at the load-bearing structure 8 of the motor vehicle 1 are shown in Figures 4a and 5a. Figure 6a and Figure 7a The following are variations of the connection structure of the front connection area 5: Figure 4b, Figure 5b, Figure 6b and Figure 7b Variations of the connection structure of the rear connection area 5 are shown respectively. Figures 4a to 4b show variations of the connection structure of the front connection area 5. Figure 7a The corresponding connection structure shown can be connected to the rear connection area 5 in Figures 4b to 4b. Figure 7bThe corresponding arrangements shown can be combined arbitrarily. Currently, each connection area 5 is connected to the support structure 8 via a mechanical connection, via multiple threaded connections 10, and / or via form-locking and / or material-locking. Currently, the front connection area 5 shown in FIG. 4a has a fluid interface through which the front connection area 5 can be connected to the fluid line 11 of the high-pressure accumulator 2. The high-pressure accumulator 2 can be fluidly coupled to the vehicle 1 via the fluid line 11 and the fluid interface of the front connection area 5. Currently, the high-pressure accumulator 2 can be fluidly connected to the cooling circuit of the vehicle 1 via the fluid interface of the connection area 5. Instead of or additionally provided with a fluid interface at the front connection area 5, a fluid interface can be provided at the rear connection area 5. In the corresponding variants of the connection area 5 arrangement shown in FIG. 4a and 4b, the connection area 5 is placed on the outer side 12 of the support structure 8 away from the internal space 9 of the accumulator and is threadedly connected at the outer side 12. To maintain a sealed internal space 9 for the accumulator, the corresponding connection area 5 is sealed relative to the outer side 12 of the support structure 8 by means of a sealing element 13. To enable electrical and / or fluid contact between the connection area 5 and the high-voltage accumulator 2, in the variant shown in Figures 4a and 5b, the connection area 5 is partially inserted into the internal space 9 of the high-voltage accumulator 2 through a through-hole 14 in the support structure 8. The area of ​​the connection area 5 arranged in the internal space 9 of the accumulator includes at least an electrical interface and / or a fluid interface through which the corresponding connection area 5 can make electrical and / or fluid contact with the high-voltage accumulator 2. For electrical and / or fluid contact, in this variant, the connection area 5 is therefore positioned on the outer side 12 of the support structure 8, partially inserted through the through-hole 14 in the support structure 8, and makes electrical and / or fluid contact in the internal space 9 of the high-voltage accumulator 2.

[0031] Figures 5a to 5b show the connection structure of the connection area 5 at the load-bearing structure 8. Figure 7b In the variant shown, the corresponding connection area 5 contacts the load-bearing structure 8 of the vehicle 1 at the inner side 15 facing the internal space 9 of the accumulator, and is fixed at this inner side 15. Here, the corresponding connection area 5 can be connected by a corresponding threaded connection part 10 (such as...). Figures 6a to 7bThe connection area 5 is mechanically connected to the support structure 8 (as shown in Figures 5a and 5b) or (in variations shown in Figures 5a and 5b) mechanically connected to the inner side 15 of the support structure 8 via form-locking and / or material-locking. Here, the connection area 5 is sealed relative to the inner side 15 of the support structure 8 by at least one sealing element 13, thereby sealingly closing the internal space 9 of the accumulator. Through the through opening 14 of the support structure 8, the corresponding connection area 5 can make electrical and / or fluid contact with the vehicle 1. As shown in Figures 5a and 5b, the support structure 8 can provide a gap 16 within which the connection area 5 can be fixed to the inner side 15 of the support structure 8. The gap 16 is at least partially limited by the protrusion 17 of the support structure 8.

[0032] When the substrate 3 is positioned on the bottom plate 7 of the support structure 8, the corresponding connection area 5 can be guided around the corresponding protrusion 17 in a pre-assembled state via the electrical connection line 6 and / or fluid conduit 11, so that it can subsequently be positioned in the gap 16. In order to allow the corresponding connection area 5 to be guided around the protrusion 17 as the substrate 3 approaches the bottom plate 7, in the variants shown in Figures 5a and 5b, the connection area 5 is movably held at least indirectly relative to the substrate 3. This means that at least one connection area 5 can be tilted in the approach direction (along which the substrate 3 can approach the bottom plate 7) so that the corresponding connection area 5 can be guided around the protrusion 17, and then the corresponding connection area can be at least partially moved into the gap 16 of the support structure 8, thereby fixing the corresponding connection area 5 within the gap 16 at the inner side 15 of the support structure 8.

[0033] The arrangement of the structure in the connection area 5 at the load-bearing structure 8 Figure 6a In the variant shown, the load-bearing structure provides a side recess 18, in which the corresponding connecting area 5 can be arranged at least partially. After the corresponding connecting area 5 is mechanically fixed to the inner side 15 of the load-bearing structure 8 via the side recess 18 (via which the connecting area 5 can be fixed relative to the load-bearing structure 8 in the vehicle's vertical direction z), the connecting area 5 can be fixed relative to the support mechanism 8 in the vehicle's longitudinal direction x. With the aid of the side recess 18 of the load-bearing structure 8, the connecting area 5 can therefore be fixed relative to the load-bearing structure 8 in one direction along the vehicle's longitudinal direction x and in the opposite direction via a stop on the load-bearing structure 8. Thus, the connecting area 5 can be positioned particularly reliably relative to the load-bearing structure 8 and can be fixed to the load-bearing structure 8.

[0034] like Figure 6bAs can be seen, the load-bearing structure 8 can completely cover the corresponding connection area 5 along the vertical direction z of the vehicle, so that the connection area 5 can be particularly safely protected by the load-bearing structure 8 from the influence of a hazard source that will cause a force to be applied to the connection area 5 from above along the vertical direction z of the vehicle.

[0035] exist Figure 7a and Figure 7b The diagram shows an embodiment where the load-bearing structure 8 has a particularly low weight, wherein... Figure 7b and Figure 7a In a variant of the arrangement of the connecting area 5 at the supporting structure 8, the connecting area 5 is arranged and mechanically fastened on the inner side 15 of the supporting structure 8 facing the internal space 9 of the storage device.

[0036] In summary, the present invention illustrates how the assembly and contact of the connection area 5 can be provided in the case of a high-voltage accumulator 2 integrated in the vehicle body.

[0037] List of reference numerals

[0038] 1 motor vehicle

[0039] 2 High-voltage accumulator

[0040] 3 substrate

[0041] 4 battery modules

[0042] 5 connection areas

[0043] 6 Electrical connection lines

[0044] 7. Bottom Plate

[0045] 8 load-bearing structures

[0046] 9. Internal space of the accumulator

[0047] 10 Threaded connection part

[0048] 11 Fluid connection piping

[0049] 12 outer

[0050] 13 sealing elements

[0051] 14 openings

[0052] 15 inner side

[0053] 16 gaps

[0054] 17 protrusions

[0055] 18 lateral concave

[0056] x Vehicle longitudinal direction

[0057] z Vehicle vertical direction

Claims

1. A method for arranging a high-voltage accumulator (2) having multiple battery modules (4) on a load-bearing structure (8) of a motor vehicle (1), wherein, - The battery modules (4) are arranged and fixed on the substrate (3), each battery module (4) comprising multiple battery cells. - The base plate (3) is fixed to the bottom plate (7) of the load-bearing structure (8) of the motor vehicle (1), thereby the base plate (3) and the bottom plate (7) provide a accumulator housing, the accumulator housing defining an internal space (9) of the accumulator, in which the battery module (4) is accommodated, so as to form a high-voltage accumulator integrated in the vehicle body without a separate high-voltage accumulator housing. Its features are, At least one connection area (5) is mechanically connected to the load-bearing structure (8), through which the high-voltage accumulator (2) can be electrically and / or fluidly connected to the motor vehicle (1), wherein, The at least one connecting area (5) is placed on the support structure (8) on the outer side (12) opposite to the internal space (9) of the storage device, and partially inserted into the internal space (9) of the storage device through the through opening (14) of the support structure (8). or The at least one connection area (5) is guided together with the substrate (3) to approach the support structure (8) and placed on the support structure (8) on the inner side (15) of the support structure (8) facing the internal space (9) of the storage device and fixed on the support structure, such that the at least one connection area (5) and the plurality of battery modules (4) are together completely arranged in the internal space (9) of the storage device.

2. The method according to claim 1, characterized in that, The at least one connection area (5) is sealed relative to the inner side (15) of the support structure (8).

3. The method according to claim 1 or 2, characterized in that, The at least one connection area (5) is guided around the protrusion (17) of the support structure (8) when the substrate (3) approaches the support structure (8), and is introduced at least partially into the gap (16) of the support structure (8) partially limited by the protrusion (17) and fixed in the gap (16) at the inner side (15).

4. The method according to claim 1 or 2, characterized in that, The inner side (15) of the bearing structure (8) provides a side recess (18) along the fixed direction of the at least one connection area (5) at the inner side (15), and the at least one connection area (5) is arranged at least partially in the side recess.

5. The method according to claim 1 or 2, characterized in that, Two connection areas (5) are connected to the support structure (8) so that the high-voltage accumulator (2) can be electrically and / or fluidly connected to the motor vehicle (1) through the two connection areas. The first connection area (5) is mechanically connected to the front region of the support structure (8) that defines the internal space (9) of the accumulator forward along the longitudinal direction (x) of the vehicle, and the second connection area (5) is mechanically connected to the rear region of the support structure (8) that defines the internal space (9) of the accumulator backward along the longitudinal direction (x) of the vehicle.

6. A high-voltage accumulator (2) arrangement structure at a motor vehicle (1), the high-voltage accumulator arrangement structure having a plurality of battery modules (4) arranged and fixed on a base plate (3) and having a bottom plate (7) of a load-bearing structure (8) of the motor vehicle (1), each battery module (4) comprising a plurality of battery cells, the base plate (3) being fixed to the bottom plate, such that the base plate (3) and the bottom plate (7) provide an accumulator housing that limits the internal space (9) of the accumulator, in which the battery modules (4) can be accommodated, so as to form a high-voltage accumulator integrated at the vehicle body without a separate high-voltage accumulator housing. Its features are, The system includes at least one connection area (5) through which the high-voltage accumulator (2) can be electrically and / or fluidly connected to the motor vehicle (1), and the at least one connection area is mechanically connected to the load-bearing structure (8), wherein... The at least one connecting area (5) is placed on the support structure (8) on the outer side (12) of the support structure (8) away from the internal space (9) of the accumulator and is partially inserted into the internal space (9) of the accumulator through the through opening (14) of the support structure (8). or The at least one connection area (5) is placed on the support structure (8) on the inner side (15) facing the internal space (9) of the storage device and fixed on the support structure, such that the at least one connection area (5) and the plurality of battery modules (4) are together completely arranged in the internal space (9) of the storage device.

7. The high-voltage accumulator arrangement structure according to claim 6, characterized in that, The at least one connection area (5) is threadedly connected to the bearing structure (8).

8. The high-voltage accumulator arrangement structure according to claim 6 or 7, characterized in that, The at least one connection area (5) is movable relative to the substrate (3) and held on the substrate (3).

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