Energy storage floor assembly for an electrically drivable passenger car

Abstract

The invention relates to an energy store floor assembly for an electrically drivable passenger vehicle, having an energy store floor assembly (1), on the underside of which an energy store (17) of an electric drive of the passenger vehicle is arranged, a holding element (23), by means of which a rear end region (28) of the energy store (17) is held on the underside of the energy store floor assembly (1), and a rear axle carrier (27), which is arranged on the underside of the energy store floor assembly (1) and which is arranged behind the energy store (17) in the vehicle longitudinal direction. Here, in order to provide an energy store floor assembly in which the rear axle carrier (27) is particularly rigidly supported and the energy store (17) is additionally particularly stably fixed on the underside of the energy store floor assembly (1) at the rear end, the energy store (17) is fixed on the rear axle carrier (27) by means of the holding element (23).

Description

Technical Field

[0001] This invention relates to an energy storage base plate assembly for an electrically driven passenger vehicle. Background Technology

[0002] An energy storage base plate assembly for an electrically driven passenger vehicle, known from DE 10 2018 214 109 A1, includes a base plate assembly on which an energy storage device for the passenger vehicle's electric drive unit is disposed. Additionally, in a structural variant with a short energy storage device, a retaining element in the form of a plate-shaped additional reinforcing element is provided. The rear end region of the energy storage device is held on a rear crossbeam on the underside of the base plate assembly by means of this retaining element. The rear crossbeam is positioned at a certain distance in the longitudinal direction of the vehicle, before a rear axle bracket also fixed to the underside of the base plate assembly.

[0003] Most passenger vehicles offered in the future will be designed to provide customers with different drive options within a single vehicle product line. Thus, in addition to pure internal combustion engine vehicles (ICE), electric vehicles (xEVs) will also be provided. Among these electric vehicles (xEVs), a distinction will be made, for example, between battery electric vehicles (BEVs) and hybrid electric vehicles (PHEVs), in which an internal combustion engine is also incorporated into the electric drive system.

[0004] To maintain low costs and manufacture additional electric drive variants (xEVs) on the same production line, existing components and structures must be retained as much as possible. This also includes the chassis with the corresponding axle supports. For rigidity requirements, these axle supports in pure internal combustion engine driven vehicles (ICEs) are typically connected to the rear end of the side sills by means of so-called torsion bars.

[0005] To provide additional sufficient electric travel range, a flat memory must be integrated under the body / floor assembly and between the two axles in battery electric vehicles (BEVs).

[0006] However, the memory structure space in front of the rear axle obstructs the reception of the torsion lever, but from a functional point of view, the torsion lever cannot be abandoned. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide an energy storage base plate assembly in which the rear axle bracket is particularly rigidly supported even in a battery electric vehicle (BEV), and furthermore, the energy storage is particularly stably fixed at the rear end on the underside of the base plate assembly.

[0008] Therefore, the present invention proposes an energy storage base plate assembly for an electrically driven passenger vehicle, the energy storage base plate assembly comprising: a base plate assembly on which an energy storage device of the passenger vehicle is disposed on the underside; a retaining element by which the rear end region of the energy storage is retained on the underside of the base plate assembly; and a rear axle bracket disposed on the underside of the base plate assembly and disposed behind the energy storage in the longitudinal direction of the vehicle, the rear end region of the energy storage being fixed to the rear axle bracket by means of the retaining element, the retaining element being configured as a substantially U-shaped lateral clamp that surrounds and engages the rear end region of the energy storage.

[0009] The energy storage base plate assembly according to the present invention includes a base plate assembly, wherein the energy storage of the electric drive device of the passenger vehicle is disposed on the underside of the base plate assembly in the longitudinal direction of the vehicle, in front of the rear axle bracket, the rear axle bracket being positioned behind the energy storage.

[0010] In order to provide an energy storage base plate assembly in which the rear axle bracket is particularly rigidly supported even in a battery electric vehicle (BEV) and the energy storage is particularly stably fixed at the rear end to the underside of the base plate assembly, the invention provides a retaining element, in particular in the form of a lateral clamp which will be explained in more detail, by means of the retaining element or lateral clamp, to fix the rear end region of the energy storage to the rear axle bracket.

[0011] Therefore, on the one hand, the retaining element / lateral clamp can be used to secure the energy storage device to the underbody assembly or the vehicle body in an improved manner in its rear end region, or more precisely, to the region in the middle of the vehicle. On the other hand, the retaining element / lateral clamp is used to improve the support of the rear axle bracket, especially for absorbing static and dynamic longitudinal and lateral forces. Here, the load path looks, for example, as follows: the force is directed from the corresponding rear wheel to the rear axle bracket via the corresponding link, and from there the force is transferred to the energy storage device via the retaining element / lateral clamp and finally to the underbody assembly / vehicle body.

[0012] Another advantage of the energy storage base plate assembly according to the invention is that the retaining element / lateral clamp is also used as a cable post protection, approach protection, and overrun protection for the rear end area of ​​the energy storage.

[0013] The energy storage used in the structural variant of the energy storage base plate assembly for battery electric vehicles (BEVs) typically presents an additional problem: the energy storage / high-voltage storage device is already fixed to the underside of the base plate assembly during assembly, prior to final assembly with the vehicle chassis and drive unit. This time interval is particularly undesirable, as the energy storage device would be allowed to suspend freely at its rear end without being directly fixed to the base plate assembly, potentially leading to bending and consequently damage. Therefore, precisely for energy storage base plate assemblies used in BEVs, the energy storage device must be secured to the vehicle body away from its center of gravity so that the energy storage / high-voltage storage device does not suspend freely until final assembly when assembled separately. This is achieved by means of the aforementioned retaining elements / lateral clamps.

[0014] In an advantageous embodiment of the invention, the retaining element is fixed at its respective lateral ends to a fixing portion of the energy storage unit, wherein the energy storage unit is fixed to a corresponding lateral receiving portion on the base plate assembly in the region of the fixing portion. Therefore, the lateral ends are preferably connected to the respective lateral receiving portions of the base plate assembly by means of the energy storage unit. For this purpose, the fixing portion of the energy storage unit and the retaining element / lateral clamp preferably overlap with the receiving portion of the base plate assembly on the vehicle body side in the vehicle height direction. Through these measures according to the invention, advantageous retention of the retaining element / lateral clamp is generally achieved, and the energy storage unit and the rear axle bracket can be installed and removed independently of each other.

[0015] Another advantageous design of the invention specifies that the retaining element is configured as a substantially U-shaped lateral clamp that surrounds the end region of the engaging energy storage device. This, for example, allows the lateral clamp to be secured to the vehicle side in the transition region between the side sill and the rear longitudinal beam, and allows the rear end region to still reach up to the rear axle bracket and, in this case, to be particularly advantageously secured by the lateral clamp.

[0016] In another advantageous embodiment of the invention, the retaining element, or lateral clamp, has a shear zone / support that, to compensate for tolerances, is constructed more softly in the vehicle height direction than the carrier member of the retaining element. The shear zone / support is fixed to the carrier member. Therefore, the rear end region of the energy storage device can be easily and stably fixed to the carrier member in a simple manner by means of the shear zone / support. Furthermore, the shear zone / support also functions as a pass-through protection for the rear end region of the energy storage device.

[0017] In another advantageous embodiment of the invention, the retaining element is assembled from a plurality of shell elements. Therefore, the retaining element can be configured, for example, particularly easily and stably as a closed box-shaped profile in a sheet shell structure. Alternatively, it is also conceivable to manufacture the retaining element, for example, from extruded profiles, flat steel pieces, or the like.

[0018] Furthermore, it has proven advantageous that the shear zone / support is integrally formed as one of the plurality of shell elements, which is connected to another shell element in the region of the carrier element to form a hollow carrier structure. This makes the structure of the retaining element / lateral clamp particularly simple.

[0019] In another embodiment of the invention, a corresponding support element is provided on the rear axle bracket for securing the retaining element. This makes the connection between the rear axle bracket and the retaining element / lateral clamp particularly advantageous. Alternatively, the connection can also be made directly on the rear axle bracket.

[0020] In another embodiment of the invention, in a second structural variant of the energy storage base plate assembly for a hybrid electric vehicle (PHEV), the fixing portions of the retaining element on the receiving section and the retaining element on the rear axle bracket are used to fix the respective tie rods to the receiving section and the rear axle bracket, respectively. Therefore, only minor adaptation work is required in both structural variants.

[0021] Further features of the invention are derived from the claims, drawings, and description of the drawings. The features and combinations thereof mentioned above in the specification, and those mentioned below in the description of the drawings and / or shown separately in the drawings, can be used not only in the combinations given separately, but also in other combinations or individually. Attached Figure Description

[0022] The invention will now be explained in more detail with reference to preferred embodiments and the accompanying drawings. (Figures:)

[0023] Figure 1a Figures 1 and 2 show top and bottom views of a floor assembly for a cross-structural variant of an electric-driven passenger vehicle, respectively. The floor assembly of the cross-structural variant is provided in a structural variant of an energy storage floor assembly for a battery electric vehicle (BEV) and in another structural variant of an energy storage floor assembly for a hybrid electric vehicle (PHEV).

[0024] Figure 2aFigures 1 and 2 show a bottom view and a partial perspective bottom view of an energy storage base plate assembly for a structural variant of a battery electric vehicle (BEV) with an energy storage device, the energy storage device extending rearward both below the main base plate and below the rear base plate to a retaining element in the form of a lateral clamp connected to the rear axle bracket;

[0025] Figure 3 A partial perspective view of the floor assembly on the side of the body-in-white is shown, wherein a receiving part is provided at the rear end of the side sill provided laterally, or at the transition area between the side sill and the rear longitudinal beam (or inner longitudinal beam) connected thereto, and the receiving part is provided on the corresponding vehicle side.

[0026] Figure 4a -c shows a partial perspective view of the energy storage of the energy storage base plate assembly according to the first structural variant, in the lower side arrangement structure of the energy storage in the area of ​​the corresponding receiving part; shows a partial bottom view of the energy storage base plate assembly according to the first structural variant, in which a lateral clamp is provided at the rear end of the energy storage; and shows a perspective bottom view of the lateral clamp in the respective, laterally associated receiving part area.

[0027] Figure 5a b shows the path along the passage Figure 2a The lines Va-Va in the diagram represent partial perspective sectional views and side sectional views of a section extending in the vehicle height direction, and also show the section along the passage. Figure 2a The line Vb-Vb in the figure represents a sectional view of the side of a section extending in the vehicle height direction.

[0028] Figure 6a -c shows a bottom view, a partial perspective view, and a partial perspective bottom view of a floor assembly according to another structural variant for an internal combustion engine-driven passenger vehicle (ICE), in which the rear axle support and the side sills of the floor assembly, respectively arranged laterally, are connected via various tie rods; and

[0029] exist Figure 7a and 7b The image shows a partial perspective bottom view of the retaining element / lateral clamp at the rear end of the energy storage according to another embodiment, and an enlarged perspective view in comparison. Detailed Implementation

[0030] exist Figure 1a and 1b The diagram shows the floor assembly 1 for electric or electrically driven passenger vehicles (BEV, PHEV) in both top and bottom views. In other words, for both structural variants of the energy storage floor assembly (BEV, PHEV), the same [structure / model] is used on the body-in-white side. Figure 1a and1b The base plate assembly 1 is diversified by assembling different components with respect to two different structural variants of the energy storage base plate assembly.

[0031] Here the main floor plate 2 is visible, which is laterally bounded by corresponding side sills 3 and extends forward to the front end wall 4. Forwardly, the front structure 5 is connected to the main floor plate 2, and the front structure includes corresponding engine longitudinal beams or main longitudinal beams 6. Laterally to the engine longitudinal beams 6 are corresponding wheel covers 7, and above the wheel covers are corresponding shock absorber strut covers 8.

[0032] The main floor plate 2 extends rearward to the heel wall 9, where it transforms into the rear floor plate 10. Viewed longitudinally in the vehicle's longitudinal direction, the rear longitudinal beam 11 connects to the rear end of the corresponding side sill 3 in the region of the heel wall 9, and extends inside the corresponding wheel arch 12 in the region of the rear of the vehicle 13 until the rear of the vehicle. Additionally, a crossbeam 14 extends laterally in the vehicle's transverse direction at the height of the rear wheel arch 12, and is interconnected with the rear longitudinal beam 11.

[0033] Also visible is the center groove 15, which extends forward from the heel plate 9 to the front end wall 4. Each seat crossbeam 16 is also connected to the center groove 15, extending outward in the lateral direction of the vehicle to the corresponding side sill 3.

[0034] Now we need to use Figure 2a and 2b Explanation of basis Figure 1a and 1b The structural variant of the floor assembly 1 is configured with corresponding components to either form a structural variant of the energy storage floor assembly for a battery electric vehicle (BEV). In this case, not only the main floor 2 but also the rear floor 10 has a through-type energy storage device 17 on its underside, which extends outward in the vehicle's lateral direction to the corresponding side sill 3. This energy storage device 17 extends forward to the corresponding front crossbeam 18, which... Figure 1b The receiving cavity 19 of the main base plate 2 for the energy storage 17 is visible in the center and is defined forward. The receiving cavity 19 is defined on the outer side by the side sill 3 and rearward by the heel plate 9. The energy storage 17 extends rearward beyond the heel plate 9 into the region of the receiving cavity 20 below the rear base plate 10, which is defined on the front and rear sides by the heel plate 9 and the crossbeam 14, respectively, and on the outer side by the longitudinal beam 11.

[0035] In addition, by Figure 2aClearly, the energy storage device 17 is screwed to the side sill 3 on the outside via a corresponding profile 21. Furthermore, the energy storage device 17 is fixed to the crossbeam 18 via a profile 22 using corresponding screw elements.

[0036] The energy storage 17, a structural variant of the energy storage base plate assembly for battery electric vehicles (BEVs), is secured at the rear in the middle region via a retaining element in the form of a lateral clamp 23. Figure 2a and 2b As clearly seen in the diagram, the lateral clamps 23 are secured at their respective front outer ends 24 to the transition area between the rear end of the side sill 3 and the corresponding longitudinal beam 11 by means to be further described. Furthermore, the lateral clamps 23 are connected on one hand to the rear end region 28 of the energy storage device 17 via various threaded connections 25, and on the other hand to the rear axle bracket 27 via various threaded connections 26. In the present case, a central linkage scheme is provided on the rear axle, in which the corresponding lateral longitudinal links (not visible) are respectively hinged to two lateral links (also not shown). In this configuration, the rear axle has correspondingly separate damping rods and dampers.

[0037] Figure 3 A partial perspective view shows the lower side of the floor assembly 1 on the left side of the vehicle (viewed in the forward direction). Here, the rear end 42 of the corresponding side sill 3 can be seen, transitioning into the laterally attached rear longitudinal beam 11 in the region of the rear end. The heel wall 9 separating the main floor plate 2 from the rear floor plate 10 can also be seen. As is now particularly evident... Figure 3 As can be seen, a lateral receiving portion 43 is provided at the front end of the rear longitudinal beam 11, or in the transition area between the rear end 42 of the side sill 3 and the front end of the rear longitudinal beam 11. Viewed in the longitudinal direction of the vehicle, the lateral receiving portion is at the height of the rear floor plate 10. Here, the receiving portion 43 is currently constructed as a sheet metal part and is joined at corners to the lower side 44 and inner side 45 of the longitudinal beam 11, respectively. Of course, other embodiments are also conceivable here. The receiving portion 43, similarly or in a mirror image, is also located on the opposite right side of the vehicle.

[0038] In a structural variant of the energy storage base plate assembly for battery electric vehicles (BEVs), the corresponding receiving part 43 is used to fix the energy storage device, and also, in the case of the energy storage device 17, to fix the lateral clamp 23 to the base plate assembly 1. This can be particularly achieved by... Figure 4a As can be seen in Figure 4, a bottom view with partial perspective shows the fixation of the energy storage 17 in the rear floor 10, which extends in the longitudinal direction of the vehicle according to the first structural variant of the energy storage base plate assembly.

[0039] Here, through with Figure 4c As can be seen from the view, the energy storage device 17 is fixed to the receiving part 43 in the region of the profile 21 on the outer side by screws 48 screwed into the threaded hole / fixed part 51 of the receiving part 43.

[0040] Additionally, a threaded sleeve 49 can be seen in the area of ​​the profile 21 of the energy storage device 17, and a transverse clamp 23 is secured by a screw 50 (the screw is also particularly evident in...). Figure 4b and 4c (The visible part) or similar fixing element can be fixed to the threaded sleeve. Therefore, the lateral clamp is fixed to the energy storage device 17 with its corresponding front end 24, and by means of the energy storage device, it is fixed to the correspondingly attached receiver 43 on the side. In the present case, the fixing part 51 of the energy storage device 17 on the receiver 43 is positioned in the longitudinal direction of the vehicle a short distance in front of the fixing part of the lateral clamp 23 on the energy storage device 17 / sleeve 49. This is, for example, from... Figure 4c The distance between the screw 48 (screwed into the fixing part 51) and the screw 50 (screwed into the fixing part / sleeve 49 of the lateral clamp 23 on the energy storage 17) is evident. Of course, it is also conceivable that the lateral clamp 23 is directly fixed to the corresponding receiving part 43. For example, it is also conceivable that the fixing parts 51 and 49 are arranged in a manner that overlaps with each other, and that not only the energy storage 17 but also the lateral clamp 23 is fixed to the receiving part 43 via the same through-hole or the same fixing mechanism (e.g., screw). However, it is important that the fixing part 49 of the lateral clamp 23 is arranged at least substantially overlapping with the associated receiving part 43 in the vehicle height direction to achieve an optimized load path or optimized force transmission.

[0041] In addition, by Figure 4aThe last screw 52 and another screw 53 are visible. The profile 21 of the energy storage device 17 is fixed to the corresponding vehicle side on the lower side of the side sill 3 by these screws. Thus, it can be seen that a fixing point for the energy storage device 17 is created at the rear of the side sill 3 by the corresponding receiving part 43, thereby providing an additional rear body fixing point for the energy storage device 17. This ensures that, in the case of separate assembly of the storage device, the rear end of the energy storage device 17 is fixed to the body-in-white side before the energy storage base plate assembly is combined with the chassis components, drive unit components, and rear axle bracket 27 (final assembly). Furthermore, the corresponding receiving part 43 thus serves as the final body fixing point for the energy storage device 17 in the longitudinal direction of the vehicle, thereby allowing the load of the lateral clamp 23 to be transferred to the vehicle body or the base plate assembly 1. Therefore, as a minimal threaded connection, it is necessary to fix the energy storage device 17 by screws 48, so that the energy storage device 17 will not be freely suspended and will not be damaged before final assembly.

[0042] according to Figure 4b and 4c The fixing of the lateral clamp 23 is described here with partial bottom view and partial perspective view, respectively. It can be seen in particular that each front end 24 of the lateral clamp 23 is fixed to the corresponding receiving part 43 by the associated screw 50 and thus fixed to the respective vehicle side on the body-in-white side.

[0043] Especially by Figure 2b and 4b Additionally, six threaded connections 26 are visible, through which the lateral clamp 23 connects to the rear end of the energy storage device 17. Six threaded connections 25 are also visible, through which the lateral clamp 23 connects to the rear axle bracket 27. Thus, a particularly advantageous connection is achieved between the clamp 23 and the rear axle bracket 27, or rather, this part is particularly advantageously supported on the base plate assembly 1, and the energy storage device 17 is advantageously secured. Another advantage is that not only the lateral clamp 27 and the energy storage device 17, but also the rear axle bracket 27 can be assembled and disassembled separately, avoiding complex assembly processes, for example, when replacing worn components.

[0044] Figure 5a and 5b Show along the passage Figure 2a The lines Va-Va in the diagram represent partial perspective sectional views and side sectional views of a section extending in the vehicle height direction, and also show the section along the passage. Figure 2a The line Vb-Vb in the diagram represents a lateral cross-sectional view of a section extending in the vehicle height direction. Specifically, based on... Figure 5aAs clearly shown in the right-hand diagram, the retaining element, or lateral clamp 23, has a shear zone / support 29, which is held on the carrier member 30, which is configured as a box-shaped profile. The retaining element 23 currently comprises two shell elements 31 and 32 configured as sheet metal shells. Here, the shear zone / support 29 is integrally formed by the upper shell element 31, which is connected to the other lower shell element 32 in the region of the carrier member 30 to form a hollow carrier structure.

[0045] The shear zone / support member 29 is connected to the rear profile 34 at the rear end region 28 of the energy storage device 17 via a threaded connection 25. To compensate for tolerances, the shear zone / support member 29 is configured to be softer than the carrier member 30 of the retaining element 23 in the vehicle height direction, and the shear zone / support member 29 is fixed to the carrier member. A corresponding sleeve 37 is used in the rear axle bracket 27, on which the carrier member 30 of the lateral clamp 23 is screwed by screws 26. The rear axle bracket 27 is connected to the underbody assembly 1 on the vehicle body side via screws 28.

[0046] In addition Figure 2b Clearly, a corresponding support element 35 is provided on the rear axle bracket 27 for securing the retaining element 23. Thus, the lateral clamp 23, which extends at least substantially at a constant height, is stably connected via the support element 35 to the outwardly upward-raising bracket area 36 of the corresponding rear axle bracket 27.

[0047] Figure 6a -c shows a bottom view, a partial perspective view, and a partial perspective bottom view of the floor assembly 1 according to another structural variant for an internal combustion engine-driven passenger vehicle (ICE), in which the rear axle bracket 27 is connected to the side sills 3 of the floor assembly 1, respectively arranged in the lateral direction, via corresponding tie rods 33. In particular, Figure 6cThe tie rods 33 are fixed to the rear ends of the respective side sills 3 by means of threaded connections 56 at their respective front ends. In this case, the tie rods 33 are fixed by a retainer 57 of the profile 21, which has an energy storage device 17 in the middle. In addition, the tie rods 33 are fixed to the corresponding threaded holes 50 of the receiving part 43 by means of threaded connections 58. Therefore, an optimized connection 33 is obtained with the side sills 3 and the rear longitudinal beam 11 by means of the receiving part 43, and an optimized connection is obtained with the heel plate 9 by means of the receiving part 43, so as to achieve optimized support for the rear axle bracket 27. Therefore, the fixing part 51 of the energy storage 51 on the receiving part 43 and the fixing part / screw 26 of the retaining element 23 on the rear axle bracket 27 in the structural variant of the energy storage base plate assembly for electric-only passenger vehicles (BEVs) are at least substantially the same as the fixing parts 51, 26 for fixing the corresponding tie rod 33 to the receiving part 43 or to the rear axle bracket 27 in the structural variant of the base plate assembly 1 for internal combustion engine-driven passenger vehicles (ICEs).

[0048] at last, Figure 7a and 7b A partial perspective bottom view and a corresponding enlarged perspective view show the retaining element / lateral clamp 23 at the rear end of the energy storage device 17 in another embodiment. Particularly noticeable in this case is the carrier member 30, which is composed of hollow profiles and has shear zones 29. In this case, the retaining element / lateral clamp 23 is currently only fixed to the rear axle bracket 27. However, the retaining element / lateral clamp 23 can also be fixed to the base plate assembly 1.

[0049] In addition, for the corresponding rearmost screw 52, ​​there is a support for the energy storage 17 with a different design. The profile 21 of the energy storage 17 is fixed to the corresponding vehicle side on the lower side of the side sill 3 by the screw.

[0050] Therefore, as can be generally seen from the accompanying drawings, in a structural variant of the floor assembly for an internal combustion engine-driven vehicle (ICE), the rear axle bracket 27 is supported or fixed to the vehicle body side via various lateral torsion bars 33. Because the torsion bars 33 cannot be used in a structural variant of the energy storage floor assembly for a battery electric vehicle (BEV) due to space constraints, a lateral clamp 23 is provided there. Here, the lateral clamp 23 also serves as protection for the energy storage device, for example, when approaching a curb, approaching a cable car, or passing a cable car.

[0051] List of reference numerals

[0052] 1. Base plate assembly

[0053] 2 Main base plate

[0054] 3 side door sills

[0055] 4 end wall

[0056] 5. Front structure of the vehicle

[0057] 6 Main longitudinal beams

[0058] 7. Wheel cover

[0059] 8 Vibration-damping support cover

[0060] 9. Heel plate

[0061] 10 Rear floor

[0062] 11 Longitudinal beams

[0063] 12 Wheel covers

[0064] 13 Rear of the vehicle

[0065] 14. Crossbeam

[0066] 15. Middle bottom groove

[0067] 16 Seat crossbeams

[0068] 17 Energy Storage

[0069] 18 Longitudinal beams

[0070] 19 Receiving cavity

[0071] 20 Receiving cavity

[0072] 21 profile

[0073] 22 profile

[0074] 23 Lateral clamps

[0075] 24 end

[0076] 25 Threaded connection

[0077] 26 Threaded connection

[0078] 27 Rear axle bracket

[0079] 28 End region

[0080] 29 Shear Zone / Support Components

[0081] 30 carrier components

[0082] 31. Shell Components

[0083] 32-shell component

[0084] 33 Pull rod

[0085] 34 profile

[0086] 35 Supporting elements

[0087] 36. Support area

[0088] 37 Sleeve

[0089] 42 end

[0090] 43 Receiving Department

[0091] 44 Lower side

[0092] 45 Inner side

[0093] 48 screws

[0094] 49. Sleeve, or fixed part

[0095] 50 screws

[0096] 51 Fixed parts

[0097] 52 screws

[0098] 53 Support section

Claims

1. An energy storage base plate assembly for an electrically driven passenger vehicle, the energy storage base plate assembly comprising: a base plate assembly (1) on which an energy storage device (17) of the passenger vehicle is disposed on the underside; a retaining element (23) by which a rear end region (28) of the energy storage device (17) is retained on the underside of the base plate assembly (1); and a rear axle bracket (27) disposed on the underside of the base plate assembly (1) and disposed behind the energy storage device (17) in the longitudinal direction of the vehicle, characterized in that, The rear end region (28) of the energy storage device (17) is fixed to the rear axle bracket (27) by means of the retaining element (23), which is configured as a substantially U-shaped lateral clamp that surrounds and engages the rear end region (28) of the energy storage device (17).

2. The energy storage base plate assembly according to claim 1, characterized in that, The retaining element (23) is fixed to the fixing part (49) of the energy storage (17) at each of its lateral ends (24), and the energy storage (17) is fixed to the corresponding lateral receiving part (43) on the base plate assembly (1) in the region of the fixing part (51).

3. The energy storage base plate assembly according to claim 1 or 2, characterized in that, The retaining element (23), or the lateral clamp, has a shear zone / support (29) which, in order to compensate for tolerances, is configured to be softer in the vehicle height direction than the carrier (30) of the retaining element (23), and the shear zone / support (29) is fixed to the carrier.

4. The energy storage base plate assembly according to claim 1 or 2, characterized in that, The retaining element (23) is assembled from multiple shell elements (31, 32).

5. The energy storage base plate assembly according to claim 3, characterized in that, The retaining element (23) is assembled from multiple shell elements (31, 32).

6. The energy storage base plate assembly according to claim 5, characterized in that, The shear zone / support (29) is an integral part of one of the multiple shell elements (31), and the shell element is connected to another shell element (32) in the region of the carrier element (30) to form a hollow carrier structure.

7. The energy storage base plate assembly according to claim 1 or 2, characterized in that, The rear axle bracket (27) is fixedly connected to the base plate assembly (1).

8. The energy storage base plate assembly according to claim 1 or 2, characterized in that, A corresponding support element (35) is provided on the rear axle bracket (27) for fixing the retaining element (23).

9. The energy storage base plate assembly according to claim 1 or 2, characterized in that, In a second structural variant of the energy storage base plate assembly for a hybrid-drive passenger vehicle, the retaining element (23) has a fixing portion (51) on the receiving portion (43) and a fixing portion on the rear axle bracket (27) for fixing the respective tie rods (33) to the receiving portion (43) and the rear axle bracket (27), respectively.

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