Battery carrier for accommodating an electrical battery module

Abstract

Battery carrier (100) for receiving at least one electrical battery module (102-1) for an electrically powered vehicle, comprising: a receiving tray (101) formed from a sheet of material (103), wherein the receiving tray (101) has a tray bottom (105) that is at least partially double-walled for receiving the electrical battery module (102-1), and side walls (109), wherein the double-walled tray bottom (105) and the side walls (109) define an interior space (104) of the receiving tray (101), wherein the side walls (109) define the double-walled tray bottom (105) laterally and extend at an angle from the tray bottom (105), wherein the side walls (109) have two opposing lateral side walls (109), a front side wall (109) defining the tray bottom (105) and a rear side wall (109) defining the tray bottom (105), wherein the double-walled tub bottom (105) has a first bottom wall (105-1) which faces the interior (104) and a second bottom wall (105-2) which faces away from the interior (104); at least one fastening element (113) which is designed to fasten at least one component (102, 102-1, 102-2) to the double-walled tub bottom (105), wherein the fastening element (113) is arranged at least sectionally in the double-walled tub bottom (105); and a heat exchanger structure (112) with hollow channels (111) which is formed by the double-walled trough bottom (105) for the passage of a fluid, wherein the at least one fastening element (113) comprises a fastening nut (125, 129) and / or a fastening screw (127, 131) which is arranged at least partially in the double-walled tub bottom (105), and wherein the fastening nut (125, 129) and / or the fastening screw (127, 131) is located in the first and / or is pressed into the second bottom wall (105-1, 105-2).

Description

[0001] The present invention relates to a battery carrier for receiving an electric battery module for an electrically powered vehicle, and a method for manufacturing a battery carrier for an electric battery module.

[0002] Battery trays, typically positioned between the vehicle's axles, are used to mount electrical battery modules for providing electrical energy in electric vehicles. These trays usually incorporate a heat exchanger structure designed to effectively regulate the temperature of the electrical battery modules housed within them. They are also typically equipped with fasteners to connect the trays to components such as the electrical battery modules and / or an underbody protection plate. It is essential to ensure that these fasteners are mechanically secure within the battery tray to prevent damage.

[0003] EP 2 828 922 B1 discloses a cooling device for a vehicle battery and a vehicle battery with a cooling device.

[0004] EP 2 541 669 B1 discloses a cooling device for a vehicle battery and a method for manufacturing a cooling device.

[0005] US patent 2012 / 0312614 A1 discloses a power supply arrangement with a plurality of batteries.

[0006] US 2015 / 0249240 A1 reveals a battery mounting structure.

[0007] DE 10 2012 202 841 A1 discloses a fluid-flowing temperature control element.

[0008] DE 10 2009 058 808 A1 discloses a cooling device for a vehicle battery.

[0009] It is therefore the object of the present invention to provide a battery carrier with effective cooling of the battery modules included in the battery carrier, wherein components can be advantageously attached to the battery carrier.

[0010] This problem is solved by the features of the independent claims. Advantageous embodiments of the invention are the subject of the dependent claims, the description, and the accompanying figures.

[0011] The present invention is based on the finding that the above problem can be solved by a battery carrier with a heat exchanger structure, which has a one-piece receiving tray with a tray bottom that is at least partially double-walled for receiving at least one battery module. In this case, at least one fastening element, which is designed to fasten a component to the double-walled tray bottom, is arranged at least partially within the double-walled tray bottom.

[0012] The double-walled base of the receiving tray, at least in sections, provides a particularly stable surface for mounting the electrical battery module compared to, for example, a single-walled base. By positioning the fastening element within the double-walled base of the receiving tray, it is ensured that the fastening element is mechanically stable and cannot break out of the double-walled base, for example, under mechanical stress acting on the battery holder.

[0013] According to a first aspect, the present disclosure relates to a battery carrier for receiving at least one electrical battery module for an electrically powered vehicle, with a receiving tray formed from a sheet of material, wherein the receiving tray has a tray bottom that is at least partially double-walled for receiving the electrical battery module, as well as side walls, wherein the double-walled tray bottom and the side walls define an interior space of the receiving tray, wherein the side walls laterally define the double-walled side wall and extend at an angle from the tray bottom, wherein the side walls have two opposing lateral side walls, a front side wall defining the tray bottom, and a rear side wall defining the tray bottom, wherein the double-walled tray bottom has a first bottom wall,which faces the interior, and a second bottom wall which faces away from the interior, comprising at least one fastening element designed to fasten at least one component to the double-walled tub bottom, wherein the fastening element is arranged at least partially in the double-walled tub bottom; and a heat exchanger structure with hollow channels formed by the double-walled tub bottom for the passage of a fluid.

[0014] This achieves the technical advantage that the at least one fastening element arranged in the double-walled tub bottom enables a particularly effective, mechanically stable fastening of at least one component to the first bottom wall facing the interior of the receiving tub or to the second bottom wall facing away from the interior of the receiving tub.

[0015] The at least one fastening element can, in particular, comprise a single fastening element or a plurality of fastening elements. The at least one component can, in particular, comprise a single component or a plurality of components. The at least one electrical battery module can, in particular, comprise a single electrical battery module or a plurality of electrical battery modules.

[0016] Depending on whether the at least one fastening element extends from the double-walled tub floor towards the interior and / or in a direction away from the interior, the component can be arranged in the interior and attached to the first bottom wall by the at least one fastening element and / or the component can be arranged in an exterior space of the receiving tub and attached to the second bottom wall by the at least one fastening element.

[0017] The inclusion of the fastening element, at least partially, in the double-walled tub floor thus provides the possibility of a mechanically stable and flexible fastening of components, such as electrical battery modules and / or an underbody protection plate, to the receiving tub.

[0018] The heat exchanger structure arranged in the battery carrier also ensures effective temperature control, in particular heating and / or cooling, of the electrical battery module held in the receiving tray.

[0019] In particular, the heat exchanger structure forms a heat exchanger in one embodiment.

[0020] In particular, the double-walled tub bottom is designed as a fully double-walled tub bottom, with the first and second bottom walls of the fully double-walled tub bottom extending over the entire width of the fully double-walled tub bottom.

[0021] Alternatively, the double-walled tub bottom is designed as a section-by-section double-walled tub bottom, wherein the section-by-section double-walled tub bottom has at least one double-walled bottom section with the first and second bottom wall and at least one single-walled bottom section which comprises only the first or the second bottom wall.

[0022] In one embodiment, the at least one fastening element is arranged at least sectionally in the first and / or second floor wall.

[0023] This achieves the technical advantage of ensuring a particularly mechanically stable arrangement of at least one fastening element in the double-walled tub bottom.

[0024] If the double-walled tub bottom has no gap between the bottom walls, the at least one fastening element can be arranged, in particular at least partially, in the first bottom wall or in the second bottom wall, or the at least one fastening element can be arranged, in particular at least partially, in the first bottom wall and in the second bottom wall.

[0025] In one embodiment, the at least one fastening element is arranged at least sectionally in a floor space between the first floor wall and the second floor wall of the double-walled tub floor.

[0026] This achieves the technical advantage of ensuring a particularly mechanically stable arrangement of at least one fastening element in the double-walled tub bottom.

[0027] If the double-walled tub bottom has, in particular, a gap between the bottom walls, the at least one fastening element can be arranged, in particular, at least partially in the first bottom wall or in the second bottom wall or in the gap between the bottom walls, or the at least one fastening element can be arranged, in particular, at least partially in the first bottom wall and the gap between the bottom walls or in the second bottom wall and the gap between the bottom walls, or the at least one fastening element can be arranged, in particular, at least partially in the first bottom wall, in the second bottom wall and in the gap between the bottom walls.

[0028] In one embodiment, the first bottom wall has a first wall opening, wherein the fastening element extends through the first wall opening to a top surface of the double-walled tub bottom in order to fasten the component to the top surface of the double-walled tub bottom, and wherein the component in particular comprises the at least one electrical battery module.

[0029] This achieves the technical advantage of ensuring advantageous attachment of the component, in particular the at least one electrical battery module, to the top of the double-walled tub bottom.

[0030] In one embodiment, the second bottom wall has a second wall opening, wherein the fastening element extends through the second wall opening to an underside of the tub bottom in order to fasten the component to the underside of the double-walled tub bottom, and wherein, in particular, the component fastened to the underside of the tub bottom is an underbody protection plate of the battery carrier, which is connected directly or by means of a coupling part to the underside of the double-walled tub bottom.

[0031] This achieves the technical advantage of ensuring a secure attachment of the component, in particular the coupling element or the underbody protection plate, to the underside of the double-walled tray floor. Specifically, the battery carrier comprises the receiving tray, the coupling element, and the underbody protection plate, with the coupling element being connected to the underside of the double-walled tray floor of the receiving tray and to the underbody protection plate of the battery carrier. In particular, the at least one fastening element comprises a plurality of fastening elements for attaching at least one component to the top and at least one component to the underside of the double-walled tray floor.

[0032] In one embodiment, a space between the double-walled tub bottom and the underbody protection plate is formed, wherein the coupling part attached to the underside of the tub bottom extends from the underside of the tub bottom through the space between the plates to the underbody protection plate, and wherein the coupling part is in particular designed as a curved coupling part.

[0033] This achieves the technical advantage that the coupling element ensures mechanical stabilization of the underbody protection plate to the mounting tray. The coupling element, designed specifically as a curved component, is deformable, at least in sections, to absorb forces acting on the underbody protection plate.

[0034] In one embodiment, the coupling part has a first contact section which rests on the underside of the tub bottom, wherein the fastening element is connected to the first contact section, wherein the coupling part has at least one further contact section, wherein the at least one further contact section rests on the underbody protection plate, and in particular is materially bonded to the underbody protection plate.

[0035] This achieves the technical advantage that the first contact section ensures a mechanically stable connection between the coupling part and the underside of the tub floor, and that the further contact section provides a mechanically stable connection between the coupling part and the underbody protection plate.

[0036] In one embodiment, the hollow channels of the heat exchanger structure are formed in the double-walled tub bottom, in particular between the first bottom wall and the second bottom wall, wherein in particular the heat exchanger structure and the fastening element are arranged in different spaces between the bottom walls.

[0037] This achieves the technical advantage that the hollow channels of the heat exchanger structure formed in the double-walled tub bottom and / or in the double-walled side wall enable effective temperature control of the at least one electrical battery module. In particular, the heat exchanger structure and the mounting element are arranged in different cavities in the base, with the different cavities being spatially separated from one another.

[0038] In one embodiment, the hollow channels of the heat exchanger structure are parallel to each other, or meandering, or helical, or coil-shaped, or at least partially circular or wave-shaped.

[0039] This achieves the technical advantage that the geometries of the hollow channels influence the fluid-carrying properties of the hollow channels in such a way that particularly effective temperature control of at least one electrical battery module is enabled.

[0040] In one embodiment, the battery carrier has a longitudinal beam and / or a transverse beam, wherein the longitudinal beam and / or transverse beam extends between two opposing side walls of the receiving tray, and wherein the longitudinal beam and / or transverse beam rests on an upper surface of the double-walled tray bottom, in particular is connected to the upper surface of the double-walled tray bottom.

[0041] This achieves the technical advantage that the longitudinal and / or transverse beams arranged in the interior of the receiving tray ensure a bridging function between two opposing side walls, thus ensuring effective structural stabilization of the battery carrier.

[0042] In one embodiment, a heat exchanger structure with hollow channels is formed in the longitudinal beam and / or in the crossbeam, wherein the heat exchanger structure in particular has a plurality of hollow channels which are formed one above the other in the longitudinal beam and / or in the crossbeam.

[0043] This achieves the technical advantage that the heat exchanger structure with its hollow channels in the longitudinal beam and / or the crossbeam ensures particularly effective temperature control of at least one electrical battery module. The heat exchanger structure in the longitudinal beam and / or the crossbeam can be arranged, in particular, as an alternative or additional to the heat exchanger structure in the double-walled base of the tub.

[0044] In one embodiment, the first and / or second bottom wall has a thickened section, and the at least one fastening element is arranged at least partially in the thickened section, wherein the thickened section is formed in particular below the longitudinal beam and / or below the transverse beam in the double-walled tub bottom.

[0045] This achieves the technical advantage that the thickening section of the double-walled tub bottom ensures structural reinforcement of the area of ​​the first and / or second bottom wall in which the fastening element is located.

[0046] In one embodiment, the at least one fastening element comprises a fastening bolt, a fastening nut and / or a fastening screw.

[0047] This achieves the technical advantage that the aforementioned fastening elements ensure effective attachment of the respective component to the battery carrier.

[0048] According to the invention, the at least one fastening element comprises a fastening nut and / or fastening screw, which is arranged at least partially in the double-walled tub bottom, wherein the fastening nut and / or fastening screw is in particular soldered or glued to the first and / or second bottom wall.

[0049] This achieves the technical advantage that the aforementioned fastening elements ensure effective attachment of the respective component to the battery carrier. In particular, the fastening nut is located in a cavity between the first and second base walls.

[0050] According to the invention, the fastening nut and / or fastening screw is pressed into the first or second bottom wall.

[0051] This achieves the technical advantage that the aforementioned fastening elements ensure effective attachment of the respective component to the battery carrier. In particular, the fastening nut is located in a cavity between the first and second base walls.

[0052] In particular, the fastening screw has a screw head which is received in a floor space between the first and second floor walls, and the fastening screw has a screw shank connected to the screw head, wherein the screw shank extends in particular through a first wall opening in the first floor wall to a top side of the double-walled tub floor, or wherein the screw shank extends in particular through a second wall opening in the second floor wall to a bottom side of the double-walled tub floor.

[0053] In one embodiment, the material sheet is folded to the receiving tray with the double-walled tray bottom, in particular folded with the formed heat exchanger structure.

[0054] This achieves the technical advantage that by folding the material sheet to the receiving tray with the double-walled tray bottom, a particularly stable receiving tray can be provided.

[0055] In one embodiment, the material board is a roll-bonded board.

[0056] This results in the technical advantage that a roll-bonded circuit board can be manufactured easily and cost-effectively.

[0057] In one embodiment, the material board is a board joined together by laser welding, soldering, gluing or roll seam welding.

[0058] This achieves the technical advantage that advantageous differently shaped areas can be introduced into a material circuit board designed as a joined circuit board.

[0059] According to a second aspect, the present disclosure relates to a method for manufacturing a battery carrier for at least one electric battery module of an electrically powered vehicle, wherein the method comprises the following process steps: providing a first material sheet wall; providing a second material sheet wall preformed with a heat exchanger structure having hollow channels; positioning at least one fastening element on the first or second material sheet wall; joining the first and second material sheet walls to obtain a material sheet with a double-walled sheet area, wherein the fastening element is arranged in the double-walled sheet area; and forming the material sheet or the first sheet into a receiving tray with a tray bottom for receiving the electric battery module and side walls that laterally delimit the tray bottom.wherein a double-walled tub bottom is formed from the double-walled circuit board area by joining and forming, and wherein at least one fastening element is designed to fasten at least one component to the double-walled tub bottom.

[0060] This achieves the technical advantage that the receiving tray can be advantageously manufactured from the material sheet with at least one fastening element arranged in the double-walled tray base.

[0061] In one embodiment, the at least one fastening element is materially bonded to the double-walled circuit board area, in particular to the first and / or second material circuit board wall, especially by soldering or mechanical joining.

[0062] This achieves the technical advantage that the material-bonded connection, in particular soldering, ensures effective fastening of at least one fastening element to the double-walled circuit board area. To meet the highest requirements for the pull-out resistance of the fastening element and / or to allow for particularly thin walls, a double-sided solder joint, i.e., soldering to both the first and second material walls of the circuit board, is specifically provided.

[0063] In one embodiment, the heat exchanger structure with the hollow channels is provided, in particular formed, before the material sheet is formed, and wherein the material sheet with the heat exchanger structure is mechanically formed to obtain the receiving tray.

[0064] This achieves the technical advantage of ensuring advantageous manufacturing of the receiving tray.

[0065] The battery carrier according to the first aspect is preferably manufactured by the method according to the second aspect.

[0066] Further embodiments of the invention are explained in more detail with reference to the accompanying figures. These show: Fig. Figure 1 shows a battery carrier in a first embodiment; Fig. 2 shows a battery carrier in a second embodiment; Fig. 3A, Fig. 3B, Fig. 3C and Fig. 3D shows schematic representations of battery carriers according to further embodiments; Fig. 4 shows a battery carrier in a third embodiment; and Fig. 5A and Fig. Figure 5B shows a battery carrier in a fourth embodiment.

[0067] Fig. Figure 1 shows a battery carrier in a first embodiment.

[0068] Fig. Figure 1 schematically shows a battery holder 100 for in Fig. 1 Components 102, in particular electrical battery modules 102-1, of an electrically powered vehicle, shown only schematically. In the Fig. Figure 1 shows a section of a receiving tray 101 of the battery carrier 100.

[0069] The battery carrier 100 has a receiving tray 101, which is formed by a mechanical deformation of a material sheet 103. In the Fig. In the embodiment shown in Figure 1, the material sheet 103 is formed by folding. Alternatively, a deep-drawing process can be used.

[0070] In particular, the receiving tray 101 is formed from a double-walled material sheet 103. In the case of deep drawing, however, a single-walled material sheet, or a single material sheet wall, is used and formed into the receiving tray 101. Subsequently, another material sheet wall, in particular with a pre-formed heat exchanger structure, is fluid-tightly joined to it, in particular by soldering.

[0071] The receiving trough 101 comprises a trough bottom 105 that is at least partially double-walled and is formed from a blank section 107 of the material blank 103. In the case of forming by folding the material blank 103, the trough bottom 105 can correspond to the blank section 107. Alternatively, in the case of forming, the double-walled trough bottom 105 can be formed from only one material blank wall by deep drawing after joining it with the other material blank wall.

[0072] The double-walled tub bottom 105 has a first bottom wall 105-1, which faces an interior space 104 of the receiving tub 101, or an electrical battery module 102-1 arranged in the interior space 104, and has a second bottom wall 105-2, which faces away from the interior space 104 of the receiving tub 101, or the electrical battery module 102-1 arranged in the interior space 104. Thus, the first bottom wall 105-1 forms a top surface 106 of the double-walled tub bottom 105, with the battery module 102-1 arranged on the top surface 106. Thus, the second bottom wall 105-2 forms a bottom surface 108 of the double-walled tub bottom 105, with the bottom surface 108 facing an exterior area 110 of the battery carrier 100.

[0073] The receiving tray 101 further comprises side walls 109, which laterally define the tray base 105 and extend at an angle from the tray base 105. In the Fig. Figure 1 shows two opposing lateral side walls 109-1 and 109-2. The side walls 109 can be produced by folding or bending the material sheet 103. A front side wall 109-3 and a rear side wall 109-4, both defining the bottom of the tub 105, are shown in the Fig. 1 not shown.

[0074] The side walls 109 can be free of hollow channels 111 and can be single-walled or double-walled. The side walls 109 can be formed before or after the hollow channels 111 are formed, for example by folding the material sheet 103.

[0075] The side walls 109 can each, in particular, contain one in Fig. 1 angled flange (not shown) which is used to attach a Fig. 1. The lid not shown is used on the receiving tray 101.

[0076] The side walls 109 are joined to each other in a material-bonded manner, for example by welding, gluing, or soldering, and are fluid-tight. Due to the fluid-tight connection, the joints of the side walls 109 are watertight and / or gas-tight.

[0077] Optionally, the side walls 109 can be attached to the corner areas in Fig. 1 corner connectors not shown, which are provided for the material-bonded and fluid-tight connection of the side walls 109.

[0078] The tub bottom 105 is at least partially double-walled, with a first bottom wall 105-1 facing the interior 104 of the receiving tub 101 and a second bottom wall 105-2 facing away from the interior 104 of the receiving tub 101.

[0079] The first bottom wall 105-1 and the second bottom wall 105-2 can be material sheet walls, from which the material sheet 103 is made in one embodiment.

[0080] The first bottom wall 105-1 can be attached to the second bottom wall 105-2 in a material-bonded manner, e.g. by gluing, soldering or welding.

[0081] The battery carrier 100 has a heat exchanger structure 112 which includes hollow channels 111 through which a fluid can be passed for temperature control of the electrical battery module 102-1. In particular, the fluid is configured to remove heat from the electrical battery module 102-1 in order to cool the battery module 102-1, or to supply heat to the electrical battery module 102-1 in order to heat the battery module 102-1.

[0082] In particular, the hollow channels 111 of the heat exchanger structure 112 are formed in the tub bottom 105, and in one embodiment form an integrated heat exchanger.

[0083] In particular, the hollow channels 111 are formed between the first bottom wall 105-1 and the second bottom wall 105-2 in the tub bottom 105.

[0084] The heat exchanger structure 112 of the second bottom wall 105-2, or of the material sheet wall, can be created by preforming such as pressing or deep drawing and has hollow channels 111 for fluid guidance in the state joined to the material sheet.

[0085] As in the Fig. As shown in Figure 1 of the present application, the first bottom wall 105-1 can be thicker than the second bottom wall 105-2. In this case, the hollow channels 111 are formed as shown in the Fig. 1 shown bulging outwards into the outer area 110 of the receiving tray 101. This allows the tray floor 105 to provide a flat or at least partially flat surface for placing a battery module 102-1.

[0086] In a Fig. In the embodiment not shown in the present application, the first bottom wall 105-1 can be formed thinner than the second bottom wall 105-2. In this case, the hollow channels 111 are formed differently than in the Fig. Figure 1 shows an example of a bulge extending into the interior 104 of the receiving tray 101. An advantage of this embodiment is the energy-efficient heat absorption by a fluid that can flow through the hollow channels 111. Furthermore, the thicker, second bottom wall 105-2 protects the interior 104 of the receiving tray 101. The thinner first bottom wall 105-1 also simplifies the folding of the side walls 109 into the interior 104 of the receiving tray 101.

[0087] The hollow channels 111 can be located between the in Fig. The shorter side walls 109-3, 109-4, not shown, extend elongated. However, the hollow channels 111 can also alternatively extend between the sides shown in Fig. 1 longer side walls 109-1, 109-2 shown.

[0088] The hollow channels 111 can be shaped in one embodiment as meandering, spiral or coil-shaped.

[0089] In one embodiment, the hollow channels 111 are fluidically connected to manifolds (not shown), allowing the heat exchanger structure 112 to be connected to a fluid circuit and thereby enabling the receiving tray 101 and the battery modules 102-1 to be temperature controlled.

[0090] As in the Fig. As shown in Figure 1, the battery carrier 100 has a fastening element 113 which is designed to fasten a component 102 to the double-walled tub bottom 105, wherein the fastening element 113 is arranged at least sectionally in the double-walled tub bottom 105, in particular in the first or second bottom wall 105-1, 105-2, and in particular between the first and second bottom wall 105-1, 105-2.

[0091] As from the Fig. As can be seen from Figure 1, the double-walled tub bottom 105, in particular the second bottom wall 105-2, has a second wall opening 115-2, and in particular the fastening element 113 is arranged at least partially in the second bottom wall 105-2 and extends through the second wall opening 115-2 to an underside 108 of the tub bottom 105 in order to fasten a component 102 to the underside 108 of the tub bottom 105. The component 102 fastened to the underside 108 of the tub bottom 105 comprises in particular a Fig. 1 coupling part 102-2 not shown between the tub bottom 105 and a in Fig. 1 underbody protection plate 102-3, not shown.

[0092] The fastening element in this case comprises in particular a fastening bolt 119 with bolt head 119-1 and bolt shaft 119-2.

[0093] Alternatively, as from the Fig. As can be seen from Figure 1, the first bottom wall 105-1 may, in particular, have a first wall opening 115-1, and the fastening element 113 is, in particular, arranged at least partially in the first bottom wall 105-1 and extends through the first wall opening 115-1 to a top surface 106 of the tub bottom 105 in order to fasten a component 102 to the top surface 106 of the tub bottom 105. The component 102 fastened to the top surface 106 of the tub bottom 105 comprises, in particular, the electrical battery module 102-1.

[0094] Fig. Figure 2 shows a battery carrier in a second embodiment.

[0095] The in Fig. 2 Battery carriers 100 shown according to the second embodiment correspond to the one in Fig. 1 battery carrier 100 shown according to the first embodiment, except that in the second embodiment according to Fig. 2 Battery carrier 100 shown has a longitudinal beam 121-1, wherein the longitudinal beam 121-1 is located between the side walls 109, in particular the one in the Fig. The longitudinal beam 121-1 extends from the front side wall 109-3 and the rear side wall 109-4 (not shown) of the receiving tub 101. The longitudinal beam 121-1 rests on a top surface 106 of the double-walled tub floor 105 and is, in particular, connected to the top surface 106 of the double-walled tub floor 105.

[0096] Alternatively, the receiving tray 101 can also be used in Fig. 2 crossbeams 121-2 not shown, wherein the crossbeam 121-2 extends between the side walls 109, in particular the lateral side walls 109-1, 109-2, of the receiving tub 101, and wherein the crossbeam 121-2 rests on a top surface 106 of the double-walled tub bottom 105, in particular is connected to the top surface 106 of the double-walled tub bottom 105.

[0097] As from the Fig. As can be seen from Figure 2, the longitudinal beam 121-1 has hollow channels 111 which are formed one above the other in the longitudinal beam 121-1.

[0098] As from the Fig. As can be seen from Figure 2, a thickening section 117 arranged in the second bottom wall 105-2 is formed with at least one fastening element 113, particularly below the longitudinal beam 121-1 in the double-walled tub bottom 105.

[0099] The fastening element 113 extends from the second bottom wall 105-2 through the second wall opening 115-2 in the second bottom wall 105-2 to an underside 108 of the tub bottom 105 in order to fasten a component 102 to an underside 108 of the double-walled tub bottom 105.

[0100] Component 102 comprises a coupling element 102-2 between the tub bottom 105 and an underbody protection plate 102-3. The coupling element 102-2 is designed in particular as a curved coupling element 102-2 in order to absorb energy through elastic or plastic deformation without damaging the tub bottom 105 or the battery modules arranged therein.

[0101] A space between the pan 105 and the underbody protection plate 102-3 is formed, wherein the coupling part 102-2, which is attached to the underside 108 of the pan 105, extends from the underside 108 of the pan 105 through the space between the plates 122 to the underbody protection plate 102-3.

[0102] The coupling part 102-2 has a first contact section 124-1, which rests against the underside 108 of the tub bottom 105, with the fastening element 113 being connected to the first contact section 124-1. The fastening element 113 is, in particular, connected to a further fastening element 113-2.

[0103] The coupling part 102-2 has at least one further contact section 124-2, in particular two further contact sections 124-2, wherein the at least one further contact section 124-2 rests against the underbody protection plate 102-3, in particular is materially bonded to the underbody protection plate 102-3.

[0104] For further details, please refer to the explanations in Fig. Reference is made to the first embodiment shown in Figure 1.

[0105] The Fig. 3A, Fig. 3B, Fig. 3C and Fig. 3D images show schematic representations of battery carriers according to further embodiments.

[0106] The in the Fig. 3A, Fig. 3B, Fig. 3C and Fig. The 3D shown receiving trays 101 of the respective battery carrier 100 have, in addition to the side walls 109, a double-walled tray bottom 105, which has a first bottom wall 105-1, which faces an interior 104 of the battery carrier 100, and which has a second bottom wall 105-2, which faces away from the interior 104.

[0107] As shown, the heat exchanger structure 112 with hollow channels 111 is formed in the double-walled tub bottom 105, in particular between the first bottom wall 105-1 and the second bottom wall 105-2.

[0108] As shown, a floor cavity 123 is formed between the first floor wall 105-1 and the second floor wall 105-2 of the double-walled tub floor 105, with the fastening element 113 being arranged at least partially in the floor cavity 123. The first and second floor walls 105-1, 105-2 and the fastening element 113 are bonded together, in particular by soldering. Corresponding solder layers 137 are in the Fig. 3A, Fig. 3B, Fig. 3C and Fig. Schematic representation in 3D.

[0109] In the Fig. In the embodiment shown in Figure 3A, the fastening element 113 is designed as a fastening nut 125, which is arranged in the base cavity 123 and which is soldered or bonded to the first and / or second base wall 105-1, 105-2. A nut opening 125-1 of the fastening nut 125 is aligned with a second wall opening 115-2 formed in the second base wall 105-2. Fig. 3A Further fastening element 113, in particular screw, not shown, can for example be inserted from the underside 108 of the double-walled tub bottom 105 through the second wall opening 115-2 into the fastening nut 125.

[0110] In the Fig. In the embodiment shown in Figure 3B, the fastening element 113 is designed as a fastening screw 127, which is arranged at least partially in the cavity 123 of the base and which is soldered or bonded to the first and / or second base wall 105-1, 105-2. A screw head 127-1 of the fastening screw 127 is arranged in the cavity 123 of the base, and a screw shank 127-2 connected to the screw head 127-1 extends through a second wall opening 115-2 of the double-walled base 105, arranged in the second base wall 105-2, into the outer area 110 of the receiving trough 101.

[0111] In the Fig. In the embodiment shown in Figure 3C, the fastening element 113 is designed as a rivet nut 129, which is arranged at least partially in the cavity 123 of the base and which is pressed into the second base wall 105-2. A nut opening 129-1 of the rivet nut 129 extends from the cavity 123 through the second base wall 105-2 to an underside 108 of the double-walled base 105.

[0112] In the Fig. In the embodiment shown in 3D, the fastening element 113 is designed as a rivet screw 131, which is arranged at least partially in the cavity 123 of the base and which is pressed into the second base wall 105-2. A screw head 131-1 of the rivet screw 131 is arranged in the cavity 123 of the base, and a screw shank 131-2 connected to the screw head 131-1 extends through a second wall opening 115-2 of the double-walled base 105, arranged in the second base wall 105-2, into the outer area 110 of the receiving trough 101.

[0113] In the Fig. 3A, Fig. 3B, Fig. 3C and Fig. 3D also shows solder layers 137 between the first and second bottom wall 105-1, 105-2 of the double-walled tub bottom 105, as well as solder layers 137 between the respective fastening element 113 and the first and / or second bottom wall 105-1, 105-2 of the double-walled tub bottom 105.

[0114] The in the Fig. 3A, Fig. 3B, Fig. 3C and Fig. The fastening elements 113 shown in 3D enable effective fastening of the component 102, in particular to the underside 108 of the double-walled tub bottom 105.

[0115] Fig. Figure 4 shows a battery carrier 100 in a third embodiment.

[0116] The in Fig. The battery carrier 100 shown in Figure 4 of the third embodiment has a receiving tray 101 for receiving at least one electrical battery module 102-1 for an electrically powered vehicle. The receiving tray 101 has a double-walled tray base 105, which has a first base wall 105-1 facing an interior 104 of the receiving tray 101, and a second base wall 105-2 facing away from an interior 104 of the receiving tray 101.

[0117] As from the Fig. As can be seen from Figure 4, the heat exchanger structure 112 with the hollow channels 111 for guiding fluid in the double-walled tub bottom 105 is formed, in particular between the first bottom wall 105-1 and the second bottom wall 105-2.

[0118] Between the first floor wall 105-1 and the second floor wall 105-2, a floor space 123 is formed in the double-walled tub floor 105, wherein the fastening element 113 is arranged at least partially in the floor space 123.

[0119] In the Fig. In the embodiment shown in Figure 4, the fastening element 113 is designed as a fastening screw 127, wherein a screw head 127-1 of the fastening screw 127 is arranged in the cavity 123 and a screw shaft 127-2 connected to the screw head 127-1 extends through a first wall opening 115-1 of the first wall 105-1 of the double-walled tub bottom 105 into the interior 104 of the receiving tub 101 in order to fasten a component 102 of the battery carrier 100 to a top surface 106 of the double-walled tub bottom 105. The component 102 comprises, in particular, an electrical battery module 102-1 arranged in the interior 104 of the battery carrier 100.

[0120] For further details, please refer to the explanations in Fig. 1, Fig. 2 and Fig. Reference is made to the 3 illustrated embodiments.

[0121] The Fig. 5A and Fig. Figure 5B shows a battery carrier according to the invention in a fourth embodiment.

[0122] Fig. Figure 5A shows a battery holder with a receiving tray 101 having a double-walled tray base 105 and side walls 109 that define the outer boundaries of the tray base 105. Flanges 134 are arranged at angles to each of the side walls 109 to allow the receiving tray 101 to be coupled to and closed with a cover. Hollow channels 111, which form the heat exchanger structure 112, are formed between the material sheet walls 103-1 and 103-2 that constitute the double-walled tray base 105. A fastening element 113 is attached to the double-walled tray base 105.

[0123] As in the Fig.As shown in Figure 5B, the double-walled tub bottom 105 is formed as a composite 135 comprising a first bottom wall 105-1 and a second bottom wall 105-2, wherein the second bottom wall 105-2 is particularly thinner than the first bottom wall 105-1. A solder layer 137 can be arranged between the bottom walls 105-1. Reference symbol list 100 battery holders 101 Receiving tray 102 Component 102-1 Electrical Battery Module 102-2 coupling part 102-3 Underbody protection plate 103 Material board 103-1 First material board wall 103-2 Second material board wall 104 Interior of the receiving tray 105 Double-walled bathtub floor 105-1 First floor wall 105-2 Second floor wall 106 Top of the double-walled tub bottom 107 circuit board area 108 Underside of the double-walled bathtub floor 109 Side wall 109-1 Lateral side wall 109-2 Lateral side wall 109-3 Front side panel 109-4 Rear side panel 110 Exterior of the battery carrier 111 hollow channels 112 Heat exchanger structure 113 Fastening element 113-2 Additional fastening element 115-1 First wall opening 115-2 Second wall opening 117 Thickening section 119 fastening bolts 119-1 Bolt head 119-2 bolt shaft 121-1 Longitudinal beam 121-2 Crossbeams 122 plate space 123 Floor space 124-1 First contact section 124-2 Further contact section 125 fastening nut 125-1 Maternal Opening 127 Fastening screw 127-1 Screw head 127-2 Screw shaft 129 Rivet nut 129-1 Maternal Opening 131 Rivet screw 131-1 Screw head 131-2 Screw shaft 133 Edge area of ​​the bathtub floor 134 Flange 135 network 137 Solder layer

Claims

[1] Battery carrier (100) for receiving at least one electrical battery module (102-1) for an electrically powered vehicle, comprising: a receiving tray (101) formed from a sheet of material (103), wherein the receiving tray (101) has a tray bottom (105) that is at least partially double-walled for receiving the electrical battery module (102-1), and side walls (109), wherein the double-walled tray bottom (105) and the side walls (109) define an interior space (104) of the receiving tray (101), wherein the side walls (109) define the double-walled tray bottom (105) laterally and extend at an angle from the tray bottom (105), wherein the side walls (109) have two opposing lateral side walls (109), a front side wall (109) defining the tray bottom (105) and a rear side wall (109) defining the tray bottom (105), wherein the double-walled tub bottom (105) has a first bottom wall (105-1) which faces the interior (104) and a second bottom wall (105-2) which faces away from the interior (104); at least one fastening element (113) which is designed to fasten at least one component (102, 102-1, 102-2) to the double-walled tub bottom (105), wherein the fastening element (113) is arranged at least sectionally in the double-walled tub bottom (105); and a heat exchanger structure (112) with hollow channels (111) which is formed by the double-walled trough bottom (105) for the passage of a fluid, wherein the at least one fastening element (113) comprises a fastening nut (125, 129) and / or a fastening screw (127, 131) which is arranged at least partially in the double-walled tub bottom (105), and wherein the fastening nut (125, 129) and / or the fastening screw (127, 131) is located in the first and / or is pressed into the second bottom wall (105-1, 105-2). [2] Battery carrier (100) according to claim 1, wherein the at least one fastening element (113) is arranged at least sectionally in the first and / or second bottom wall (105-1, 105-2). [3] Battery carrier (100) according to claim 1 or 2, wherein the fastening element (113) is arranged at least partially in a floor space (123) between the first floor wall (105-1) and the second floor wall (105-2) of the double-walled tub floor (105). [4] Battery carrier (100) according to claim 1, 2 or 3, wherein the first bottom wall (105-1) has a first wall opening (115-1), wherein the fastening element (113) extends through the first wall opening (115-1) to a top (106) of the double-walled tub bottom (105) to fasten the component (102, 102-1, 102-2) to the top (106) of the double-walled tub bottom (105), and wherein the component (102, 102-1, 102-2) in particular comprises the at least one electrical battery module (102-1). [5] Battery carrier (100) according to one of the preceding claims, wherein the second bottom wall (105-2) has a second wall opening (115-2), wherein the fastening element (113) extends through the second wall opening (115-2) to an underside (108) of the tub bottom (105) in order to fasten the component (102, 102-1, 102-2) to the underside (108) of the double-walled tub bottom (105), wherein in particular the component (102, 102-1, 102-2) fastened to the underside (108) of the tub bottom (105) is an underside protection plate (102-3) of the battery carrier (100), which is connected directly or by means of a coupling part (102-2) to the underside (108) of the double-walled tub bottom (105). [6] Battery carrier (100) according to claim 5, wherein a space between the plates (122) is formed between the double-walled tub bottom (105) and the underbody protection plate (102-3), wherein the coupling part (102-2) attached to the underside (108) of the tub bottom (105) extends from the underside (108) of the tub bottom (105) through the space between the plates (122) to the underbody protection plate (102-3), and wherein the coupling part (102-2) is in particular designed as a curved coupling part (102-2). [7] Battery carrier (100) according to claim 5 or 6, wherein the coupling part (102-2) has a first contact section (124-1) which rests on the underside (108) of the tub bottom (105), wherein the fastening element (113) is connected to the first contact section (124-1), wherein the coupling part (102-2) has at least one further contact section (124-2), wherein the at least one further contact section (124-2) rests on the underbody protection plate (102-3), and in particular is materially bonded to the underbody protection plate (102-3). [8] Battery carrier (100) according to one of the preceding claims, wherein the hollow channels (111) of the heat exchanger structure (112) are formed in the double-walled tub bottom (105), in particular between the first bottom wall (105-1) and the second bottom wall (105-2), wherein in particular the heat exchanger structure (112) and the fastening element (113) are arranged in different bottom spaces (123). [9] Battery carrier (100) according to one of the preceding claims, wherein the hollow channels (111) of the heat exchanger structure (112) are parallel to each other, or meandering, or helical or coiled or at least partially circular or wave-shaped. [10] Battery carrier (100) according to one of the preceding claims, wherein the battery carrier (100) has a longitudinal beam (121-1) and / or a transverse beam (121-2), wherein the longitudinal beam (121-1) and / or the transverse beam (121-2) extends between two opposing side walls (109) of the receiving tray (101), and wherein the longitudinal beam (121-1) and / or the transverse beam (121-2) rests on a top surface (106) of the double-walled tray bottom (105), in particular is connected to the top surface (106) of the double-walled tray bottom (105). [11] Battery carrier (100) according to one of the preceding claims, wherein the at least one fastening element (113) comprises a fastening bolt (119), a fastening nut (125, 129) and / or a fastening screw (127, 131). [12] Battery carrier (100) according to one of the preceding claims, wherein the fastening nut (125, 129) and / or fastening screw (127, 131) is soldered or glued to the first and / or the second bottom wall (105-1, 105-2). [13] Battery carrier (100) according to one of the preceding claims, wherein the material board (103) is a board joined by soldering, gluing or roll seam welding. [14] Method for manufacturing a battery carrier (100) for at least one electrical battery module (102-1) of an electrically powered vehicle, the method comprising the following process steps: Providing an initial material board wall (103-1), Providing a second material sheet wall (103-2) pre-formed with a heat exchanger structure (112) with hollow channels (111), Positioning at least one fastening element (113) on the first or second material board wall (103-1, 103-2), Connecting the first and second material board walls (103-1, 103-2) to obtain a material board (103) with a double-walled board area (107), wherein the fastening element (113) is arranged in the double-walled board area (107), and Forming the material sheet (103) or the first sheet metal sheet into a receiving tray (101) with a tray bottom (105) for receiving the electrical battery module (102-1) and side walls (109) which laterally delimit the tray bottom (105), wherein a double-walled tray bottom (105) is formed from the double-walled sheet area (107) by joining and forming, and wherein the at least one fastening element (113) is designed to fasten at least one component (102, 102-1, 102-2) to the double-walled tray bottom (105). wherein the side walls (109) laterally define the double-walled tub bottom (105) and extend at an angle from the tub bottom (105), wherein the side walls (109) have two opposing lateral side walls (109), a front side wall (109) defining the tub bottom (105) and a rear side wall (109) defining the tub bottom (105), wherein the at least one fastening element (113) comprises a fastening nut (125, 129) and / or a fastening screw (127, 131) which is arranged at least sectionally in the double-walled tub bottom (105), and wherein the fastening nut (125, 129) and / or the fastening screw (127, 131) is pressed into the first and / or the second bottom wall (105-1, 105-2). [15] Method (200) according to claim 14, wherein the at least one fastening element (113) is materially bonded, in particular soldered, or mechanically joined to the double-walled circuit board area (107), in particular to the first and / or second material circuit board wall (103-1, 103-2).

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