Battery bracket

Abstract

The invention relates to a battery carrier (1) for fastening battery elements for providing electrical energy in an electrically driven vehicle. The battery carrier (1) comprises a battery tray (2) with a reinforcing structure (16) which is arranged on the outside in front of side walls (4, 5) of the battery tray (2). The reinforcing structure (16) has an outer profile (17) which is U-shaped in cross section and has a web (18) and two legs (19, 20) and an opening (21). The outer profile (17) faces the battery tray (2) with an opening (21) and is connected to the battery tray (2) with legs (19, 20). A plurality of sleeves (23) spaced apart from one another are provided in the longitudinal direction (LR) of the outer profile (17), each sleeve (23) extending between the legs (19, 20) and connecting the openings (24, 25) in the legs (19, 20).

Description

Technical Field

[0001] The invention relates to a battery carrier according to the features of the preamble of claim 1 . Background Art

[0002] In order to fix the battery elements for providing electrical energy in electrically driven vehicles, battery trays are used, which are arranged between the axles of the vehicle. Important safety requirements for the battery tray include good crash behavior. In order to meet this, the battery tray is protected by an external reinforcement structure. The main function of the reinforcement structure is to dissipate energy in the event of a collision and to increase the overall rigidity of the battery tray and the vehicle body. This improves the crash safety of the battery in particular in the event of a side impact.

[0003] DE 10 2018 126 068 A1 discloses a battery carrier for an electric vehicle. The battery carrier has a battery tray which is embedded in an outer frame and is closed by a cover. The frame is made of at least two mutually engaged profile components in cross section, at least one of which is made as a sheet metal profile.

[0004] In the case of the battery carrier known from US 2010 / 0307848 A1, the battery carrier is protected by a reinforcement structure which surrounds it on the outside and has a cavity.

[0005] DE 10 2017 217 814 A1 discloses a battery housing for a vehicle, which has a battery tray with an outer frame surrounding it on the side. A mounting profile is connected to the outer frame in order to fix the battery housing to the vehicle. The mounting profile can be assembled from a plurality of parts. In one embodiment, the mounting profile is configured in a U-shape in cross section and has a tab and two legs and an opening, the opening of the outer profile being oriented toward the battery tray and the legs being connected to the battery tray.

[0006] Furthermore, DE 10 2016 214 974 A1 describes a battery housing having a circumferential external connection profile.

[0007] Furthermore, WO 2017 / 207502 A1 discloses a battery housing having an external connection profile.

[0008] DE 11 2018 002 641 T5 discloses a vehicle body substructure for the lower part of a vehicle body.

[0009] Further prior art consists of DE 20 2022 103 457 U1, WO 2018 / 029168 A1, US 2023 / 182828 A1 and WO 2022 / 098006 A1.

[0010] The battery tray must be mechanically stable and fixed to the body or chassis of the vehicle. The battery tray should be integrated into the vehicle body to the greatest extent possible, which poses a structural and assembly challenge.

[0011] The external reinforcement structure in front of the side wall of the battery tray consists of one or more components. These components are welded to each other and to the battery tray. The large number of individual components and the large number of welded connections can lead to deformations in the welded structure. The large number of individual components also leads to increased tolerances or tolerance chains. These and the welding deformations must be compensated to ensure that the battery tray is suitable for mass connection in motor vehicles. Summary of the invention

[0012] Starting from this prior art, the invention is based on the object of providing a battery holder which is improved in terms of function and assembly technology.

[0013] This object is achieved according to the invention by a battery carrier according to claim 1 .

[0014] A battery bracket for fixing a battery element for providing electrical energy in an electrically driven vehicle comprises a battery tray having a reinforcement structure, which is arranged on the outside in front of at least one side wall of the battery tray. The reinforcement structure has an outer profile. The outer profile is configured in a U-shape in cross section and has a tab and two legs and an opening. The outer profile is an integral or single-shell U-shaped shell and preferably does not have other shells known in the prior art for dissipating energy in the event of a collision. The opening of the outer profile is oriented toward the battery tray. The outer profile is connected to the battery tray via the legs.

[0015] A plurality of sleeves are arranged in the reinforcement structure. These are fixing sleeves or mounting sleeves, which are in particular designed in the shape of a cylinder or a rectangular tube. Typically, a plurality of sleeves spaced apart from one another are arranged in the longitudinal direction of the reinforcement structure. The sleeves extend between the legs of the outer profile over the total height of the outer profile. The sleeves connect the openings in the legs. The sleeves are oriented coaxially with the openings. The sleeves and the openings are located on a common longitudinal axis. The sleeves are used for the passage of fixing devices, by means of which the battery bracket is fixed in the body or chassis of the vehicle. In particular, the battery bracket is fixed to the side sills and, if necessary, the floor cross member in the motor vehicle by means of sleeves and suitable fixing devices.

[0016] The reinforcement structure extends in the longitudinal direction of the side wall. The outer profile together with the side wall of the battery tray forms a hollow profile at least over a large part of the length of the reinforcement structure. Such a hollow profile is characterized by favorable static and dynamic load characteristics. In particular, the stiffness of the reinforcement structure transversely to the battery tray is improved. In this case, the legs of the outer profile can be deformed in the event of a side impact while dissipating energy, and the externally located tabs of the outer profile act as tie rods and hold the legs in a restrained position relative to each other.

[0017] An advantageous embodiment provides that the sleeve has an upper flange and / or a lower flange. The sleeve has a sleeve body. An especially circumferential flange is arranged at one end or both ends of the sleeve body. The flange is oriented outward from the sleeve body. In particular, the flange is a component of the sleeve or the sleeve body made of the same material.

[0018] The flange can also be formed by a separate flange body.

[0019] The flange absorbs the friction and pressure that occurs when tightening a mounting element, such as a screw connection element, which is passed through the sleeve. This protects the surface of the component in the area of ​​the screw connection from damage and reduces surface pressure. In particular, the flange ensures tolerance compensation. The flat flange surface is larger than the sleeve surface, so that a horizontal orientation or positioning of the sleeve or its sleeve body can be achieved before welding to the external profile. The orientation takes place according to a defined lateral spacing of the mounting holes.

[0020] The sleeve can rest with its collar on the inside against the inner side of the legs of the outer profile.

[0021] The collar can rest on the outside, ie on the outer side, against the leg.

[0022] A combination is also possible in which the first flange bears against the inner side of the first leg and the second flange bears against the outer side of the second leg.

[0023] The joining of the sleeve to the outer profile or the outer profile leg takes place in the flange region.

[0024] The sleeve extends between the opening in the lower leg and the opening in the upper leg and engages with the leg. The leg can be reinforced in the opening area. Such reinforcement can be achieved, for example, by material stamping in the leg or increasing the wall thickness in the opening area.

[0025] Another design is that one or each sleeve passes through an opening in the leg with an upper sleeve section and / or a lower sleeve section. The sleeve or sleeve section can end flush with the outer side of the leg or protrude relative to the outer side with a sleeve section.

[0026] The sleeve can be constructed in multiple pieces and have a first sleeve element and a second sleeve element. The sleeve elements have coaxial through-openings and are connected to each other on end faces oriented toward each other. This connection is especially carried out in a force-locking and / or form-locking manner.

[0027] It is particularly advantageous if each leg has a connection flange at the end. The connection flange is an integral component of the leg made of uniform material and is connected at the end to the leg oriented toward the battery tray.

[0028] A particularly advantageous embodiment for practice provides that the lower leg has a lower connection flange, which extends at least partially below the tray bottom of the battery tray. The lower leg lower connection flange is materially connected to the battery tray, in particular welded, preferably spot welded or spot welded.

[0029] The upper leg has an upper engaging flange that engages with a side wall of the battery tray or an edge of the upper tray.

[0030] Another design provides that the connecting flange is arranged at an angle relative to the leg. In particular, the upper connecting flange is arranged at an angle on the upper leg, preferably at a right angle to the leg, and is oriented outward from the leg.

[0031] Furthermore, a leg can have a plurality of leg sections, wherein at least two leg sections are oriented differently relative to one another.

[0032] Between the at least two leg sections there may be a deflection, bend, step, kink or shoulder, by which the leg sections transition into one another. The contour and orientation of the leg sections relative to one another increase their rigidity and improve the load behavior.

[0033] At least one stiffening element can be provided in the rear web of the outer profile to increase the rigidity. Such a stiffening element can be provided, for example, by means of a groove, a deflection or a stamping. accomplish.

[0034] The external profile can partially include sections with different wall thicknesses and / or different material grades from one another. In particular, the external profile can be reinforced locally by reinforcing elements, in particular sheet metal components (so-called patches). These are sheet metal sections or patches that match the geometry and material grade and are preferably already joined in a planar state before the production of the external profile and formed together to form the external profile. The patches are arranged on the inside or outside of the external profile. The external profile can also be made of variable thickness rolled sheet (TRB). As a result, the external profile has different sheet metal thicknesses. A uniform transition between the two thickness ranges is advantageous.

[0035] The outer profile and the reinforcing element or reinforcement member can also be made of materials of different material grades.

[0036] The side walls of the battery tray can also be reinforced at least in some areas or have reinforcements. The side walls can be designed to be thicker than the rest of the battery tray. It is particularly advantageous if the side walls are provided with reinforcements in the form of patches, with matching geometry and material grade.

[0037] The joining flange can have a plurality of joining fins spaced apart from each other in the longitudinal direction of the outer profile. Cutouts or notches are provided between the joining fins.

[0038] The outer profile of the reinforcing structure is welded to the battery tray with a joint flange and / or a joint wing. Here, the lower leg is welded to the battery tray in the side area of ​​the bottom side of the battery tray and the upper leg of the outer profile is welded to the upper area or upper flange of the battery tray side wall.

[0039] Material-locking joints by means of spot welding and spot welding adhesive bonding are considered to be particularly advantageous in practice. Spot welding adhesive bonding is a combination of adhesive bonding and spot welding joining processes. In addition to high strength and a high reinforcement effect, spot welding joints and spot welding adhesive joints also have a sufficiently high elongation at break even in the event of impact loads such as collisions.

[0040] Another embodiment which is advantageous for practical purposes provides that an internal element is arranged in the reinforcement structure. The internal element can be a load-conducting body. Partitions and similar internally located reinforcing and / or functional components. In addition to their use for simply reinforcing or stiffening defined longitudinal sections of the reinforcing structure and for increasing energy dissipation, they also serve in particular to provide load paths in order to conduct the loads in a targeted manner, in particular via the aforementioned internal struts in the interior of the battery carrier, further into the rest of the battery carrier structure.

[0041] In addition to the built-in elements in the reinforcement structure, reinforcement or stiffening elements can also be integrated in the battery tray. Such reinforcement or stiffening elements can be formed by longitudinal and / or transverse profiles or struts extending on the tray bottom.

[0042] Furthermore, the cover can form the upper closure of the battery tray. It is particularly advantageous if the battery tray is designed and intended for integration into the body or chassis of a vehicle. The battery tray forms a load-bearing component of the body (battery to body). The floor of the vehicle can form the battery cover.

[0043] The battery tray is in particular a deep-drawn part constructed in one piece and of uniform material. The outer profile is also preferably made by die-casting or deep-drawing technology. The outer profile has a channel-like extension due to its U-shaped cross section, in which a plurality of sleeves are arranged spaced apart from each other in the longitudinal direction.

[0044] The battery tray can also be formed into a battery tray from a sheet metal blank by folding technology. For this purpose, a sheet metal blank is provided, the geometry of which corresponds to the unfolded shape of the battery tray. The cooling plate can optionally be directly joined to the sheet metal blank, which is then formed into a battery tray by folding technology. The battery tray is constructed as a folding component. The folded corners of the battery tray are joined and sealed.

[0045] The battery tray as well as the reinforcement structure and the components forming the reinforcement structure, in particular the housing, can be produced by die quenching the steel sheet. Die quenching is also called press quenching. During die quenching, the metal sheet made of manganese-boron steel is heated to a temperature above the specific austenitizing temperature of the material, placed in a forming mold and hot-formed into a molded part, which cools during the forming process. In the forming mold, the molded part is quenched by cooling.

[0046] Coated hardenable steel sheets can also be used here. In particular, these are manganese-boron steel sheets provided with an aluminum / silicon coating. The components of the reinforcement structure and the battery tray have a tensile strength of 1000 MPa and above.

[0047] The battery tray and the outer profiles of the reinforcement structure can also be made of ultra-high strength cold-formed steel. These components have a tensile strength greater than 980 MPa. In particular, the outer profiles have a tensile strength greater than or equal to 1180 MPa.

[0048] In principle, in both cases it is also possible to use tailored blanks with different sheet metal thicknesses, steel grades and technologies for the battery tray and the exterior profiles in order to produce tailored strength properties with local flexible areas (soft zones), for example in order to increase the lateral rigidity in a targeted manner and to improve the crash performance and to prevent cracks, for example during welding, or to provide local weakened areas with improved deformation capacity for absorbing energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. The accompanying drawings are as follows:

[0050] Figure 1 A battery bracket according to the present invention is shown in cross-section;

[0051] Figure 2 A battery tray is shown in a schematic top view;

[0052] Figure 3 A partial view of a battery tray is shown and another embodiment of a reinforcement structure is shown;

[0053] Figure 4 and Figure 3 A partial view of the battery tray is also shown and a second embodiment of the reinforcement structure is shown;

[0054] Figure 5 and Figure 3 A partial view of the battery tray is also shown, showing a third embodiment of the reinforcement structure;

[0055] Figure 6 Another embodiment of the battery bracket according to the present invention is shown in a cross-sectional view;

[0056] Figure 7 A schematic top view is shown according to Figure 6 The battery bracket of the diagram;

[0057] Figure 8 A partial view of a battery tray is shown and another embodiment of a reinforcement structure is shown;

[0058] Fig. 9 and Figure 8 A partial view of a battery tray is also shown and another embodiment of a reinforcement structure is shown;

[0059] Fig.10 and Figure 8 A partial view of a battery tray is also shown and another embodiment of a reinforcement structure is shown;

[0060] Fig.11 and Figure 8 A partial view of a battery tray is also shown and another embodiment of a reinforcement structure is shown;

[0061] Fig.12 and Figure 8 A partial view of a battery tray is also shown and another embodiment of a reinforcement structure is shown;

[0062] Fig.13 and Figure 8 A partial view of a battery tray is also shown and another embodiment of a reinforcement structure is shown;

[0063] Fig.14 A top view of a reinforcement structure is shown schematically and simplified in a technical manner;

[0064] Fig.15 A top view showing another embodiment of a reinforcement structure;

[0065] Fig.16 A top view showing another embodiment of a reinforcement structure;

[0066] Fig.17 A top view showing another embodiment of a reinforcement structure;

[0067] Fig.18 A top view showing another embodiment of a reinforcement structure;

[0068] Fig.19 Shown in the sleeve area according to Fig.18 A cross-sectional view of a reinforcement structure of the diagram;

[0069] Fig. 20 In the area of ​​the reinforcing element according to Fig.18 A cross-sectional view of a reinforcement structure of the diagram;

[0070] Fig.21 A longitudinal section showing the upper leg of the outer profile of the reinforcing structure;

[0071] Fig. 22 A top view of the upper leg of the reinforcement structure is shown schematically and simplified technically;

[0072] Fig.23 Shown in the sleeve area corresponding to Fig.21 and Fig. 22 A cross-sectional view of a reinforcement structure of the diagram;

[0073] Fig.24 A cross-sectional view showing the reinforcement structure in the area outside the sleeve;

[0074] Fig.25 a partial view showing the outer profile of the reinforcement structure; and

[0075] Fig.26 A partial view of a battery tray is shown and illustrates another embodiment of a reinforcement structure. DETAILED DESCRIPTION

[0076] exist Figures 1 to 26 In the description, the same reference numerals are used for components or component assemblies that are identical or that correspond in function to one another, even if a repeated description is omitted for reasons of simplicity.

[0077] Figure 1 and Figure 2 as well as Figure 6 and Figure 7 A battery tray 1 and its components according to the present invention are shown.

[0078] The battery holder 1 has a battery tray 2 deep-drawn from sheet steel. The battery tray 2 is rectangular in cross section and has a tray bottom 3 and side walls, namely two longitudinal walls 4, 5 and two end walls 6, 7, which complement each other to form a surrounding tray wall 8. At the upper tray edge 9, an outwardly directed flange section 10 extends along the longitudinal walls 4, 5 and the end walls 6, 7, which also complement each other in a surrounding closed manner to form an upper flange 11. The tray wall 8 defines a tray interior space 12 of the battery tray 2.

[0079] A plurality of internal struts 13 may optionally be arranged in the tray interior 12. The internal struts 13 extend transversely on the tray base 3 between the longitudinal walls 4, 5 and are fixed in the battery tray 2 in a materially bonded manner.

[0080] On the upper side, the battery tray 2 is closed with a seal in between by a cover 14 which rests at the edge on the flange 11 . In the exemplary embodiment shown, the cover 14 is detachably connected to the battery tray 2 by means of screw connections 15 .

[0081] The battery tray 1 has a reinforcement structure 16. The reinforcement structure 16 extends outside the battery tray 2 in front of the longitudinal walls 4, 5 respectively.

[0082] Figure 1 and Figure 2 The cross-sectional views in each show only the reinforcement structure 16 on one side of the battery tray 2 . Figure 2 and Figure 7 The illustration shows that the reinforcement structure 16 is arranged on both longitudinal sides of the battery tray 2 along the longitudinal walls 4 , 5 .

[0083] The end walls 6 , 7 can also optionally be connected to corresponding reinforcement structures 16 .

[0084] In another embodiment not shown, the battery bracket 1 can be arranged with respect to the installation position in the motor vehicle according to Figure 1 and Figure 2 Compared to the embodiment of FIG. 1 , the battery bracket 1 is rotated 90° about the vertical axis, so that the battery bracket 1 can be connected to the floor crossbeam or the guide frame crossbeam via the reinforcement structure 16 .

[0085] The reinforcement structure 16 has an outer profile 17. The outer profile 17 is U-shaped in cross section and has a tab 18 as well as two legs 19, 20 and an opening 21. The opening 21 extends over the length L of the outer profile 17, which corresponds to the length of the reinforcement structure 16. The opening 21 of the outer profile 17 is oriented toward the battery tray 2. The legs 19, 20 are connected to the battery tray 2. The opening 21 of the outer profile 17 facing the battery tray 2 is closed by the longitudinal wall 4 or 5 of the battery tray 2. The rear tab 18 is located externally on the side facing away from the longitudinal walls 4, 5 of the battery tray 2.

[0086] The outer profile 17 is a sheet metal part that is formed in one piece from a steel sheet. The outer profile 17 can be a die-hardened steel sheet component or a cold-formed part made of, in particular, ultra-high strength (UHSS) cold-formed steel. The tensile strength of the UHSS part is Rm>980 MPa and has a proportional martensitic structure.

[0087] The legs 19, 20 and the tabs 18 enclose the longitudinal channel. The outer profile 17 forms a hollow profile 22 together with each longitudinal wall 4, 5 of the battery tray 2 at least over most of the length L of the reinforcement structure 16. The reinforcement structure 16 extends in the longitudinal direction LR in front of the side walls 4, 5.

[0088] A plurality of sleeves 23 are provided in the outer profile 17 of the reinforcement structure 16. These sleeves extend vertically between the legs 19, 20 of the outer profile 17. Openings 24, 25 are provided in the upper leg 19 and the lower leg 20, respectively, which are connected by the sleeves 23 (see also Figures 3 to 5 ).

[0089] The sleeves 23 are arranged spaced apart from one another in the longitudinal direction LR of the outer profile 17 and the reinforcement structure 16 .

[0090] Each sleeve 23 has a sleeve body 26. Figure 3 In the sleeve 23 of the embodiment ...

[0091] In accordance with Figure 4 In the sleeve 23 of the embodiment of the embodiment of the sleeve 23, a flange 27 is provided at the lower end of the sleeve body 26. This flange concentrically surrounds the lower opening 25 in the lower leg 20 and rests on the inner side 31 of the lower leg 20. The sleeve body 26 of the sleeve 23 rests on the upper leg 19 around the opening 24 on the inner side 32 of the upper leg 19. On the outside, an upper flange 27 is provided concentrically with the opening 29 or the sleeve longitudinal axis LH, which rests on the outer side 30 of the upper leg 19.

[0092] In accordance with Figure 5 In the sleeve 23 shown in the figure, the sleeve 23 or its sleeve body 26 has an upper sleeve section 29 and a lower sleeve section 33. The upper sleeve section 29 of the sleeve 23 passes through the opening 24 in the upper leg 19. The lower sleeve section 33 of the sleeve 23 passes through the opening 25 in the lower leg 20.

[0093] The lower sleeve section 33 ends approximately flush with the outer side 34 of the lower leg 20 . The upper sleeve section 29 projects relative to the outer side 30 of the upper leg 19 .

[0094] In accordance with Figure 1 and Figure 6In the sleeve 23 in the illustrated embodiment, a flange 27 is provided at the upper end and the lower end of the sleeve body 26, respectively, with which the sleeve 23 rests on the upper leg 19 or the lower leg 20 on the inside.

[0095] The opening 24 in the upper leg 19 and the opening 25 in the lower leg 20 , the sleeve 23 and the collar 27 are each located on a common sleeve longitudinal axis LH and are arranged concentrically thereto.

[0096] In accordance with Figure 5 In the case of a flangeless sleeve 23, tolerance compensation can be achieved by a suitable welding process with a relatively large amount of welding filler in the case of a direct connection with the legs 19, 20. This is exemplified in Fig.26 Shown in.

[0097] Connecting flanges 35 , 36 are provided on the end faces of the legs 19 , 20 .

[0098] The lower leg 20 has a lower engagement flange 36. The lower engagement flange 36 extends at least partially below the tray bottom 3 of the battery tray 2 and engages with the battery tray 2.

[0099] The upper flange 35 on the upper leg 19 is arranged at an angle α relative to the upper leg 19. Figure 1 as well as Figures 3 to 6 In the embodiment of the present invention, the connecting flange 35 is oriented outwardly transversely to the upper leg 19 and in particular at a right angle away from the upper leg 19. The transition from the leg 19 to the connecting flange 35 is rounded.

[0100] The outer profile 17 is joined to the battery tray 2 in a materially locked manner. This is done via a lower joining flange 36 and an upper joining flange 35. The lower joining flange 36 extends partially below the lower longitudinal edge section 37 of the battery tray 2. The upper joining flange 35 is supported on the side walls 4, 5 of the battery tray 2.

[0101] exist Fig.10 In the illustration of , a joining edge strip 38 facing the upper tray edge 9 of the battery tray 2 is bent on the upper joining flange 35. The joining edge strip 38 abuts against the outer edge of the upper flange 11 and is joined thereto, in particular by laser welding.

[0102] The material connection of the outer profile 17 to the battery tray 2 is carried out in particular by spot welding or spot adhesive bonding in addition to butt welding.

[0103] Figures 8 to 19 as well as Fig. 22 and Fig.23The sleeve 23 shown in the figure is shown in a technically simplified manner and should be understood schematically. The sleeve 23 extends between the opening 25 in the lower leg 20 of the outer profile 17 and the opening 24 in the upper leg 19 and connects the openings. The sleeve 23 is arranged and determined to enable a threaded connection device to pass through the sleeve and fix the battery bracket 1 in the body or chassis of the vehicle. The sleeve 23 also has the function of supporting the outer profile 17 itself in principle to prevent deformation caused by the tightening force of the bolts. The battery bracket 1 is installed in the vehicle via the outer profile 17 and the sleeve 23 arranged therein by means of suitable bolt fixing devices.

[0104] In particular, the lower leg 20 can have at least two leg sections 39, 40, which are oriented differently relative to one another. Figures 8 to 10 1 . The lower leg 20 has a first leg section 39. The first leg section 39 extends substantially parallel to the upper leg 19. The opening 25 and the sleeve 23 connected to the opening 25 are located in the first leg section 39 of the lower leg 20. The second leg section 40 is connected to the first leg section 39 by a bend 41 and extends in the direction of the lower connecting flange 36 oriented away from the first leg section 39 at an acute angle. In particular, the first leg section 39 is partially formed or stamped to match the end face of the sleeve 23, while the second leg section 40 is offset and / or oriented obliquely to the projection plane of the end face of the sleeve 23.

[0105] exist Figure 1 in and Figure 6 and Figure 7 Schematically and simplified, an internal element 42 is shown, which is built into the outer profile 17 of the reinforcement structure 16. Such an internal element 42 can be, for example, a load guide or a partition. They are connected to the outer profile 17, in particular in a material-locking manner. Fig.15 In the top view, the built-in elements 42 can also be seen, which are designed in the shape of a hat and have different heights.

[0106] Figures 8 to 13 The outer profile 17 of the reinforcement structure 16 and a detail of the battery tray 2 are shown respectively. The sleeve 23 is designed without flanges and ends flush with the lower leg 20 and the upper leg 19 and extends between the openings 24, 25. The sleeve 23 can be formed by Figure 1 as well as Figures 3 to 5 The drawings are shown in a technically simplified manner and are to be understood schematically.

[0107] The outer profile 16 is a hot-formed and press-quenched or cold-formed high-strength shell member. The battery tray 2 is a hot-formed and press-quenched steel plate member or a cold-formed profile made of ultra-high-strength cold-formed steel.

[0108] The longitudinal walls 4 , 5 of the battery tray 2 can be locally reinforced and in particular reinforced by tailor-welded plates, variable thickness rolled steel plates or by sheet metal components or patches. The outer profiles 17 are respectively joined to the battery trays 2 .

[0109] In accordance with Fig. 9 , Fig.12 and Fig.13 In the illustrated embodiment of the embodiment shown, a reinforcement element 43 in the form of a groove is provided in the outer web 18 of the outer profile 17 .

[0110] The reinforcement element 43 in the form of a groove in different designs is also Fig.15 , Fig.16 and Fig.17 Shown in.

[0111] Fig.11 The illustration of shows a battery tray 2 which is reinforced partially in the region of the side walls 4 by reinforcements 49. The side walls 4 are at least partially thicker than the tray bottom 3 and the upper tray edge 9. For this purpose, the battery tray 2 is manufactured from a variable thickness rolled steel sheet.

[0112] In accordance with Fig.12 In the illustrated embodiment, the side wall 4 of the battery tray 2 is reinforced on the inner side by a reinforcement portion in the form of a patch.

[0113] In accordance with Fig.13 In the illustrated embodiment, the side wall 4 of the battery tray 2 is reinforced on the outside on the side facing the opening 21 of the outer profile 17 by a reinforcement 49 in the form of a patch. The reinforcement 49 extends around the lower longitudinal edge section 37 of the battery tray 2. The lower joining flange 36 extends through the lower section 45 of the reinforcement 44 and joins with the tray bottom 3.

[0114] The reinforcement element 46 in the outer profile 17 is formed according to Fig.14 In the embodiment of the embodiment of the present invention, the reinforcing structure 16 in the outer profile 17 is arranged spaced apart in the longitudinal direction. In particular, the reinforcing elements are respectively positioned between the sleeves 23. The reinforcing elements 46 are preferably sheet metal sections or patches, which can be joined to the outer profile 17 on the inside or on the outside.

[0115] Fig.18 This design is also shown.

[0116] exist Figures 14 to 18 In FIG. 1 , the arrow shows the collision direction in the event of a side collision.

[0117] Fig.19 A cross-section through the outer profile 17 of the reinforcement structure 16 is shown in the region of the sleeve 23 .

[0118] Fig. 20The cross section of the outer profile 17 is shown in the region of the reinforcing element 46. This is a U-shaped patch which matches the inner contour of the outer profile 16 and partially covers the upper leg 19 and the lower leg 20 of the outer profile 17 and completely covers the rear tab 18 of the outer profile 17.

[0119] according to Figure 21 to Figure 24 An outer profile 17 of a reinforcement structure 16 made of tailor-welded blanks is depicted. Fig.21 The upper leg 19 is shown in cross section. The different wall thicknesses can be seen. The wall thickness is greater in the region of the sleeve 23 than in the leg sections 39 , 40 located therebetween. Fig.23 The outer profile 17 is shown in a cross section in the region of the sleeve 23 . Fig.24 A cross-section through the outer profile 17 is shown in the region outside the sleeve 23 .

[0120] according to Fig.25 As can be seen from the diagram of the drawings, the joining flanges 35, 36, in the embodiment shown, the upper joining flange 35 has a plurality of joining fins spaced apart from each other in the longitudinal direction of the outer profile 17. Recesses 48 are respectively provided in the joining flange 35 between the joining fins 47.

[0121] Reference numerals list

[0122] 1Battery bracket

[0123] 2 battery trays

[0124] 3 Tray bottom

[0125] 4 Longitudinal wall

[0126] 5 Longitudinal wall

[0127] 6 end wall

[0128] 7 end wall

[0129] 8 Pallet Wall

[0130] 9 Pallet Wall

[0131] 10 Flange section

[0132] 11 Upper flange

[0133] 12 Pallet internal space

[0134] 13 Internal support rods

[0135] 14 Cover

[0136] 15 Threaded connectors

[0137] 16 Strengthen the structure

[0138] 17 External profile

[0139] 18 Splice

[0140] 19 Legs

[0141] 20 Legs

[0142] 21 Opening

[0143] 22 Hollow Profile

[0144] 23 Sleeve

[0145] 24 Opening

[0146] 25 Opening

[0147] 26 Sleeve body

[0148] 27 Flange

[0149] 28 disc body

[0150] 29 Sleeve section

[0151] 30 Outer side of the leg

[0152] 31 Inside of the leg

[0153] 32 Inside of the leg

[0154] 33 Sleeve section

[0155] 34 Outer side of outrigger

[0156] 35 Upper flange

[0157] 36 Lower joint flange

[0158] 37 longitudinal edge segment

[0159] 38 Joining edge strips

[0160] 39 Outrigger Section

[0161] 40 Outrigger Section

[0162] 41 Bending part

[0163] 42 built-in components

[0164] 43 Reinforcement elements

[0165] 44 Strengthening Department

[0166] 45 Reinforced section

[0167] 46 Reinforcement elements

[0168] 47 Engagement tab

[0169] 48 Notch

[0170] L length

[0171] LH sleeve longitudinal axis

[0172] LR Longitudinal direction

[0173] α angle

Claims

1. A battery bracket (1), comprising a battery tray (2) and a reinforcement structure (16), wherein the reinforcement structure is arranged on the outside in front of the side walls (4, 5) of the battery tray (2), the reinforcement structure (16) having an external profile (17), the external profile being configured in a U-shape in cross section and having a web (18) and two legs (19, 20) and an opening (21), the opening (21) of the external profile (17) being oriented toward the battery tray (2) and the legs (19, 20) being connected to the battery tray (2), a plurality of sleeves (23) being provided, the sleeves (23) respectively extending between the legs (19, 20) and connecting the openings (24, 25) in the legs (19, 20), characterized in that: The reinforcing structure (16) extends along the longitudinal direction (LR) of the side walls (4, 5) and the external profile (17) and the side walls (4, 5) form a hollow profile (22) at least over a majority of the length (L) of the reinforcing structure (16); and / or the reinforcing structure (16) extends along the longitudinal direction (LR) of the side walls (4, 5) and the external profile (17) and the side walls (4, 5) form a hollow profile (22) at least over a majority of the length (L) of the side walls (4, 5).

2. The battery bracket according to claim 1, characterized in that: The or each sleeve (23) has an upper flange and / or a lower flange (27).

3. The battery bracket according to claim 1 or 2, characterized in that: One or each sleeve (23) is guided through an opening (24, 25) in the leg (19, 20) with an upper sleeve section (29) and / or a lower sleeve section (33) and ends flush with an outer side (30, 34) of the leg (19, 20) or protrudes relative to the outer side (30, 34).

4. The battery bracket according to any one of claims 1 to 3, characterized in that: Each leg (19, 20) has a connecting flange (35, 36) at the end.

5. The battery bracket according to claim 4, characterized in that: The lower leg (20) has a lower engagement flange (36) which at least partially engages below the tray bottom (3) of the battery tray (2).

6. The battery bracket according to claim 4 or 5, characterized in that: The joining flanges (35, 36) are arranged at an angle (α) relative to the legs (19, 20).

7. The battery bracket according to any one of claims 4 to 6, characterized in that: The upper leg (19) has an upper engaging flange (35) which engages with the side walls (4, 5) or the upper tray edge (9) of the battery tray (2).

8. The battery bracket according to any one of claims 1 to 7, characterized in that: The at least one leg (19, 20) has a plurality of leg sections (39, 40), wherein at least two leg sections (39, 40) are oriented differently relative to one another, in particular the first leg section (39) is partially formed or stamped to match the end face of the sleeve (23).

9. The battery bracket according to any one of claims 1 to 8, characterized in that: An integrated element (42) is arranged in the reinforcement structure (16), which integrated element (42) is designed in particular as a load-distributing element and is a component of the sleeve (23).

10. The battery bracket according to any one of claims 1 to 9, characterized in that: The outer profile (17) has at least one reinforcement element (46) which is designed as a patch or a patch structure.

11. The battery bracket according to any one of claims 1 to 10, characterized in that: At least one reinforcement element (43), in particular a groove, is arranged in the web (18).

12. The battery bracket according to any one of claims 1 to 11, characterized in that: The outer profile (17) partially comprises sections with different wall thicknesses and / or different material grades from one another.

13. The battery bracket according to any one of claims 1 to 12, characterized in that: The side walls (4, 5) of the battery tray (2) are at least partially reinforced or have reinforcements (44), in particular so that at least 30%, preferably at least 40%, of the area of ​​the side walls (4, 5) are double-layered.

14. The battery bracket according to any one of claims 1 to 13, characterized in that: The joining flanges (35, 36) have a plurality of joining tabs (47) spaced apart from each other in the longitudinal direction of the outer profile (17), and the joining flanges (35, 36) are especially spot welded or spot-bonded to the battery tray (2).

15. The battery bracket according to any one of claims 1 to 14, characterized in that: The sleeve (23) is constructed in multiple parts and has a first sleeve element and a second sleeve element, which have coaxial through-openings and are connected to one another at end faces facing one another.

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