Battery holder for vehicle

Abstract

Battery holder for a vehicle, comprising a frame (2) which at least partially delimits a receiving space (10) and which has two longitudinal side parts (20, 21), characterized in that the longitudinal side parts (20, 21) each consist of an inner profile element (3) and an outer profile element (4), the inner profile element (3) faces the receiving space (10) with a side wall (34) and the outer profile element (4) is connected to the inner profile element (3) at the opposite side wall (35) of the inner profile element (3), the inner profile element (3) is connected to the outer profile element (4) by gluing and form-fitting, the outer profile element (4) has at least one hollow chamber (40), the outer profile element (4) has a lower deformation resistance than the inner profile element (3) and the outer profile element (4) has a smaller wall thickness than the inner profile element (3) or the outer profile element (4) is made of a material which has a lower strength than the material of the inner profile element (3), and / or the outer profile element (4) is manufactured by heat treatment so that it has a lower strength than the material of the inner profile element (3).

Description

[0001] The present invention relates to a battery holder for a vehicle.

[0002] In electric vehicles or hybrid vehicles, it is common practice to house the drive batteries, also known as battery modules, in a battery compartment that is located between the axles of the vehicle below the passenger compartment.

[0003] Such a battery compartment is described, for example, in EP 2 501 576 B1. The battery compartment comprises a frame, a base, and a roof, which together define a housing in which the battery modules can be accommodated. The frame comprises a profile with a constant cross-section. The frame, base, and roof are three separate elements that are attached to one another. In addition, an extruded hollow side element can be provided on each side of the frame. This battery compartment can provide a certain degree of protection for the battery modules in the event of an impact.

[0004] Furthermore, DE 10 2015 012 257 A1 discloses a protective device for an electric battery, wherein the battery comprises at least one electrical storage element and is at least partially enclosed by a battery frame. The battery frame is coupled to a support frame, which is designed for attachment to a vehicle structure and as a force-absorbing element. The battery frame is coupled to the support frame by means of at least one screw connection.

[0005] The object of the present invention is to provide a battery holder by means of which the protection for the battery modules in the event of an impact, in particular a side impact, can be further improved with a simple construction.

[0006] The object is achieved according to the invention by a battery holder for a vehicle, which comprises a frame which at least partially delimits a receiving space and which has two longitudinal side parts.The battery holder is characterized in that the longitudinal side parts each consist of an inner profile element and an outer profile element, the inner profile element has a side wall facing the receiving space and the outer profile element is connected to the inner profile element on the opposite side wall of the inner profile element, the inner profile element is connected to the outer profile element by gluing and form-fitting, the outer profile element has at least one hollow chamber, the outer profile element has a lower deformation resistance than the inner profile element and the outer profile element has a smaller wall thickness than the inner profile element or the outer profile element is made of a material that has a lower strength than the material of the inner profile element and / or is produced by heat treatment such that it has a lower strength than the material of the inner profile element.

[0007] A battery holder is a device used to hold one or preferably a plurality of battery modules, which can also be referred to as drive batteries, in an electrically powered vehicle.

[0008] Unless otherwise stated, directional references such as front, rear, side, top, and bottom refer to the battery holder as installed in the vehicle. The directional references "inside" and "outside" also refer to the battery holder as installed in the vehicle, with "inside" referring to the direction facing the battery module compartment.

[0009] The long side of the battery holder is the side of the battery holder that, when installed, is aligned longitudinally with the vehicle. In particular, the long sides are parallel to the sides of the vehicle and, in particular, to the longitudinal members of the vehicle frame.

[0010] According to the invention, the battery holder comprises a frame that at least partially defines a receiving space. The frame defines the receiving space to the sides, front, and rear. The receiving space can be defined at the bottom by a base. At the top, the receiving space is either open or defined by a cover.

[0011] The frame has two longitudinal side parts. The longitudinal side parts form the sides of the frame in the longitudinal direction and, when the battery holder is installed, extend in the longitudinal direction of the vehicle. Towards the front, the frame can be formed by a front part and to the rear by a rear part. The front part and the rear part can be separate components from the longitudinal side parts and can be attached to the longitudinal ends of the longitudinal side parts. However, it is also possible for the front part and the rear part to be designed as a single piece with the longitudinal side parts. In this embodiment, part of a longitudinal side part, in particular the inner profile element, extends over the entire circumference of the receiving space.

[0012] The longitudinal side parts of the battery holder frame each consist of an inner profile element and an outer profile element. The inner profile element has one side wall facing the receiving space, and the outer profile element is connected to the inner profile element at the opposite side wall of the inner profile element. Each of the longitudinal side parts thus represents a vertically separate component consisting of an inner profile element and an outer profile element that are connected to one another. This means that the inner profile element and the outer profile element are horizontally adjacent to one another. The length of the outer profile element can be the same as or less than the length of the inner profile element.

[0013] At least the outer profile element has at least one hollow chamber. A hollow chamber is understood to be a profile chamber in the profile that is closed in cross-section. For example, the outer profile of the outer profile element can be a closed profile. In this case, the outer profile element is formed by a hollow chamber. Additionally or alternatively, at least one hollow chamber can be formed inside the outer profile element. This can be formed, for example, by one or more inner webs in the outer profile element.

[0014] The outer profile element also has a lower deformation resistance than the inner profile element. In particular, the deformation resistance to deformations in a direction transverse to the longitudinal direction of the longitudinal side part is lower for the outer profile element than for the inner profile element.

[0015] A number of advantages can be achieved by the battery holder, which can also be referred to as a battery holder, comprising a frame whose longitudinal side parts each represent a vertically separate component consisting of an inner profile element and an outer profile element, the outer profile element having at least one hollow chamber, and the outer profile element having a lower deformation resistance than the inner profile element. The two-part design of the longitudinal side parts of the battery holder makes it easy to adjust different properties in different areas of the longitudinal side part of the frame of the battery holder. In addition, the outer profile element of the longitudinal side part, which has a hollow chamber, provides protection against objects penetrating the receiving space of the battery holder in the event of an impact, in particular a side impact.Since the outer profile element also has lower deformation resistance than the inner profile element, energy acting on the side of the battery holder, for example, in a side impact, can be at least partially converted into deformation energy in the outer profile element and thus absorbed. The inner profile element, with its higher deformation resistance, reliably prevents deformation of the battery holder frame in the event of a side impact. This provides particularly good protection for the battery modules housed in the battery holder.

[0016] The different deformation resistances of the inner profile element and the outer profile element can be achieved in various ways. For example, the profile elements can have different geometries and dimensions, be made of different materials, or be treated differently.

[0017] According to one embodiment, the outer profile element has a smaller wall thickness than the inner profile element. The wall thickness can be smaller at all webs of the outer profile element than the wall thickness of the webs of the inner profile element. However, it is also within the scope of the invention for only inner webs of the outer profile element to have a smaller wall thickness than inner webs of the inner profile element. By having a smaller wall thickness, the deformation resistance of the outer profile element is reduced and impact energy can thereby be at least partially absorbed in the outer profile element, thus at least partially preventing the transfer of the impact energy to the inner profile element and to the battery modules.

[0018] According to a further embodiment, the outer profile element is made of a material that has a lower strength than the material of the inner profile element. In particular, a material with a lower yield strength can be used as the material for the outer profile element. This allows the deformation resistance of the outer profile element to be set lower than the deformation resistance of the inner profile element.

[0019] Due to the two-part construction of the longitudinal side part of the battery holder frame, the profile elements can be manufactured from different materials. In addition to or as an alternative to using different materials for the outer profile element and the inner profile element, the different strengths of the outer profile element and the inner profile element can be adjusted by heat treating at least one of the profile elements.

[0020] The two profile elements that form the longitudinal side part of the battery holder can be connected to each other in different ways. According to the invention, the outer profile element and the inner profile element are connected to each other by a material bond. In this case, the profile elements are connected to each other by an adhesive bond.

[0021] In addition to a material-to-material connection, the outer profile element and the inner profile element are also connected to each other in a form-fitting manner. Here, projections on one profile element can engage, for example, in recesses such as grooves or undercuts on the other profile element.

[0022] In addition to a material connection and a form-fitting connection, the outer profile element and the inner profile element can also be connected to each other in a force-fitting manner. Such a force-fitting connection can be achieved, for example, by a clamping connection or a snap-in connection.

[0023] Preferably, the inner profile element and the outer profile element are connected to each other using several connection types. According to the invention, the inner profile element is connected to the outer profile element by adhesive bonding and form-fitting. Adhesive can be used during the manufacture of the battery holder, thus pre-fixing the two profile elements together. After the adhesive has cured, both the adhesive bond and the form-fitting connection act as a connection between the profile elements.

[0024] The inner profile element of the longitudinal side part of the frame can be an open or a closed profile element. An open profile element is a profile element whose outer profile is open in cross-section. A closed profile element is a profile element whose outer profile is closed in cross-section.

[0025] According to one embodiment, the inner profile element has at least one coupling structure for connection to the outer profile element, wherein the coupling structure is adapted to the contour of a coupling structure of the outer profile element. The coupling structure is the structure on which the two profile elements abut one another after connection. The coupling structure preferably comprises at least one coupling surface on each of the profile elements, which is preferably a flat surface. The coupling surfaces of the profile elements are preferably arranged such that support and distribution of the loads is ensured upon deformation of the outer profile element, preferably at least partially linear or planar. The coupling surfaces are particularly preferably arranged vertically. In addition to a coupling surface, the coupling structure on the profile elements preferably comprises at least one coupling groove on one profile element and a coupling arm on the other profile element.The coupling arm can be a locking arm. The coupling arm is designed to engage with the coupling groove. The coupling surface can be used as an adhesive surface if an adhesive connection is to be created between the two profile elements.

[0026] According to one embodiment, the coupling structure of the outer profile element extends over the entire height of the outer profile element and the coupling structure of the inner profile element extends in the middle region of the height of the inner profile element.

[0027] According to one embodiment, the inner profile element has at least one connecting surface for mounting a base, a tray, and / or a cover of the battery holder. The connecting surface can be a connecting strut.

[0028] The connecting surface for mounting a cover can be the top wall of the interior profile element. In this case, the cover can be placed on the top of the interior profile element and, if necessary, attached to it.

[0029] A tray can be inserted into the frame of the battery holder to accommodate the battery modules. The tray is inserted into the frame so that it lies within the frame's receiving space.

[0030] The connecting surface for mounting a tray can also be the top wall of the inner profile element. In this case, the tray has a flange that extends outwards over the upper edge of the tray. Alternatively, the connecting surface for mounting the tray can also be a connecting strut provided on the bottom wall of the inner profile element or on the inner side wall of the inner profile element. If the connecting strut is provided on the bottom wall of the inner profile element, it can be an element that is attached to the bottom wall of the inner profile element and extends inwards over the inner side wall of the inner profile element into the frame. The outer edge of the tray base can then be placed onto this connecting strut. The connecting strut for mounting the tray can also be designed integrally with the inner profile element.In this case, the connecting strut may be formed as a web on the inner profile element, which extends inwards from the bottom wall or the inner side wall of the inner profile element in the frame.

[0031] The connecting surface for mounting the floor can be a connecting strut and is preferably located at the lower end of the inner profile and extends horizontally inwards from the inner side wall of the inner profile element. The connecting strut for mounting the floor can be designed as an element that is attached to the bottom wall of the inner profile element and extends inwards over the inner side wall of the inner profile element into the frame. The outer edge of the floor can then be placed onto this connecting strut. The connecting strut for mounting the floor can also be designed integrally with the inner profile element. In this case, the connecting strut can be designed as a web on the inner profile element that extends inwards from the bottom wall or the inner side wall of the inner profile element into the frame.The edge of a plate or flat profile forming the base of the battery holder can be placed on the connecting strut for mounting the base and thus held in place. Preferably, the base is additionally connected to the connecting strut, for example, by gluing or riveting.

[0032] According to one embodiment, the connecting surface therefore preferably represents a connecting strut that extends inward from the inner profile element and is formed integrally with the inner profile element. Particularly preferably, the connecting strut for mounting the base of the battery holder or for mounting a tray of the battery holder on the inner profile element is formed during the extrusion of the inner profile element. This further simplifies the manufacture of the battery holder, since no separate process step is required for attaching the connecting strut to the inner profile element.

[0033] According to one embodiment, the outer profile element has at least one mounting point for mounting on a vehicle sill. Preferably, several mounting points are provided along the length of the outer profile element. The mounting points preferably represent openings that lie horizontally. Fastening elements, such as screws or rivets, can then be passed through the mounting points. The mounting point can be a passage opening for a connecting sleeve through which the outer profile element can be screwed to the vehicle sill. Alternatively, the mounting point represents a bore for direct screwing to the vehicle sill. It is also within the scope of the invention for the battery holder to be attached to another part of the vehicle longitudinal member of the vehicle instead of to a vehicle sill.For example, the battery mount can be attached to additional longitudinal members located between the vehicle's sills. The mounting points on the outer profile element can also be used for these attachments.

[0034] The profile elements can be manufactured in different ways. According to one embodiment, the inner profile element and / or the outer profile element is manufactured by extrusion. The advantage of this manufacturing method is that even complex geometries, such as inner webs of the profile elements or connecting webs, can be created in a single manufacturing step. Alternatively, the inner profile element and / or the outer profile element is manufactured by roll forming. In this profiling process, the profile element is manufactured from a sheet metal.

[0035] It is also within the scope of the invention that the inner profile element is manufactured by a different manufacturing process than the outer profile element.

[0036] The inner profile element and / or the outer profile element can be made of aluminum or steel, for example.

[0037] Due to the two-part construction of the frame's longitudinal side panel, it can also be made of two different materials. For example, the inner profile element can be made of steel and the outer profile element of aluminum. Alternatively, the inner profile element can be made of an aluminum alloy with a higher yield strength, for example, and the outer profile element of an aluminum alloy with a lower yield strength.

[0038] According to one embodiment, at least one desired deformation zone is incorporated into the outer profile element. The desired deformation zone represents either one or more horizontal walls or inner webs with a relatively small wall thickness, or a bead or groove incorporated into a horizontal wall or a horizontal web of the outer profile element. The desired deformation zone preferably extends in the longitudinal direction of the outer profile element. In particular, in the case of an outer profile element produced by extrusion, such a desired deformation zone can be created during extrusion. By providing a desired deformation zone, energy can be absorbed particularly well in the outer profile element in the event of a side impact, thereby providing good protection for the battery modules in the frame.

[0039] According to one embodiment, the inner profile element is adapted to a support structure in the receiving space. This support structure preferably has at least one cross member.

[0040] According to one embodiment, the outer profile element and the inner profile element have at least one outer or inner web, which forms a load path with at least one outer or inner web of the respective other profile element. For example, the inner profile element has at least one inner web that is inclined to the horizontal, and the end of the inner web pointing towards a cross member in the receiving space of the battery holder is at a height that corresponds to the height of an upper end of the cross member. An inner web is a web that lies inside the profile element. Due to this orientation of the inner web, forces that could not be absorbed by the outer profile element and are thus transferred to the inner profile element can be diverted into the support structure inside the frame.Thus, the inner profile element can have a greater height than the support structure and yet buckling of the inner profile element into the receiving space of the frame can be reliably prevented.

[0041] The present invention will be explained in more detail below with reference to the accompanying drawings. Fig. 1: a schematic perspective view of another embodiment of a battery holder according to the invention; Fig. 2: a schematic sectional view of a first embodiment of a longitudinal side part of the battery holder; Fig. 2a: a schematic detailed view of the connection area of ​​the longitudinal side part of the battery holder according to Fig. 3; Fig. 3: a schematic sectional view of a second embodiment of a longitudinal side part of the battery holder; and Fig. 4: a schematic sectional view of a third embodiment of a longitudinal side part of the battery holder.

[0042] In Fig. Figure 1 shows an embodiment of the battery holder 1 according to the invention. The battery holder 1 has a frame 2. The frame 2 consists of a front part 22, a rear part 23, and two intermediate longitudinal side parts 20, 21. In the embodiment shown, the front part 22 has a greater height than the longitudinal side parts 20, 21 and the rear part 23.

[0043] In addition, in the embodiment shown, a floor 12 is accommodated in the frame 2. The frame 2 and the floor 12 delimit a receiving space 10 to the front, rear, sides, and bottom. In the embodiment shown, cross members 11 are provided on the floor 12, which extend perpendicular to the longitudinal side parts 20, 21. The front part 22 and the rear part 23 are attached to the longitudinal ends of the longitudinal side parts 20, 21. Attachment points 13 are provided on the longitudinal side parts 20, 21, via which the battery holder 1 can be attached to longitudinal members (not shown) of the vehicle (not shown). In the embodiment shown, the front part 22 and the rear part 23 have the same height as the longitudinal side parts 20, 21.

[0044] The structure of the longitudinal side part 20 is described with reference to the Fig. 2 to 4. The second longitudinal side part 21 has a corresponding structure.

[0045] As can be seen from Fig. 2, the longitudinal side part 20 consists of an inner profile element 3 and an outer profile element 4. The outer profile element 4 has a cuboid shape whose width is greater than its height. The outer profile of the outer profile element 4 has an upper wall 47, a lower wall 46 and two side walls 44, 45. Inner webs 43 are arranged in the outer profile element 4. One inner web 43 extends horizontally between the side walls 44, 45 and another inner web 43 extends vertically between the upper wall 47 and the lower wall 46. In the embodiment shown, the inner webs 43 therefore form a cross shape. Thus, in the embodiment shown, four profile chambers 40 are formed in the outer profile element 4, each forming a hollow profile. A vertical passage opening 48 is introduced into the outer profile element 4 near the outer side wall 45. A connecting sleeve 13 is arranged in the passage opening 48.In the embodiment shown, the connecting sleeve 13 forms the mounting point via which the frame 2 can be attached to a longitudinal member of the vehicle.

[0046] In the outer profile element 4, a bead 49 is introduced into the upper wall 47, the lower wall 46, and the horizontal inner web 43. The beads 49 extend in the longitudinal direction of the outer profile element 4. The beads 49 are introduced in the area between the vertical inner web 43 and the side wall 44, which faces the inner profile element 3.

[0047] The inner profile element 3 also has a cuboid shape, the height of which is greater than the width. The height of the inner profile element 3 is greater than the height of the outer profile element 4. The outer profile of the inner profile element 3 has a top wall 37, a bottom wall 36, and two side walls 34, 35. Three inner webs 33 are provided inside the inner profile element 3. The inner webs 33 extend between the side walls 34, 35 of the inner profile element 3. Thus, in the illustrated embodiment, four profile chambers 30 are formed in the inner profile element 3, each forming a hollow profile.

[0048] In the first embodiment according to Fig. 2, a connecting strut 39 is attached to the bottom wall 36 of the inner profile element 3. The connecting strut 39 creates a connecting surface via which a floor 12 or a tray (not shown) can be held in the frame 2. The connecting strut 39 is in the first embodiment according to Fig. 2 is formed by a material strip that is attached to the bottom wall 36 via a connection point 38. For example, the connecting strut 39 on the bottom wall 36 of the inner profile element can be positively connected to the inner profile element 3 at the connection point 38, for example, welded or glued.

[0049] The inner profile element 3 and the outer profile element 4 are connected to each other. The connection area with the coupling structures of the profile elements is in Fig. 2a in detail. The inner profile element 3 has a vertically extending coupling surface 31 in the middle of its height. The coupling surface 31 is the outer side of a projection provided on the side wall 35 facing the outer profile element 4. At the upper end of the projection, a coupling groove 32 is formed in the upper side. At the lower end of the projection, another coupling groove 32 is formed in the lower side. The coupling surface 31 thus lies vertically between the coupling grooves 32.

[0050] The coupling surface 31 and the coupling grooves 32 of the inner profile element 3 form the coupling structure via which the inner profile element 3 is connected to the outer profile element 4.

[0051] On the outer profile element 4, on the side wall 44 facing the inner profile element 3, a coupling arm 42, which can also be referred to as a locking arm, is provided on the upper wall 47. This coupling arm extends horizontally from the side wall 44. A coupling arm 42 is also provided on the lower wall 46 on the side wall 44, which extends horizontally from the side wall 44. The coupling arms 42 each have a locking lug. On the upper coupling arm 42, the locking lug is directed downwards, and on the lower coupling arm 42, it is directed upwards. Between the coupling arms 42 lies the coupling surface 41, which extends vertically.

[0052] The contour of the coupling arms 42 corresponds to the coupling grooves 32 on the inner profile element 3. This means that each of the coupling arms 42 engages in a coupling groove 32. This creates a positive connection between the inner profile element 3 and the outer profile element 4. In the embodiment shown, the coupling surfaces 31, 41 each represent a flat surface. Adhesive is preferably provided between the coupling surfaces 31, 41. The coupling surfaces 31, 41 can therefore also be referred to as adhesive surfaces.

[0053] The coupling arms 42 and the coupling surface 41 form the coupling structure of the outer profile element 4, via which the outer profile element 4 is connected to the inner profile element 3.

[0054] In the Fig. 3 shows a second embodiment of a longitudinal side part 20. The second embodiment differs from the first in Fig. 2 only in that the outer profile element 4 has no beads.

[0055] In addition, Fig. 3 schematically shows a cross member 11, which can be provided on the base 12 of the battery holder 12. As can be seen from this view, the upper inner strut 33 of the inner profile element 3 is aligned such that its lowest end is at the level of the upper end of the cross member 11. The other end of the inner strut 33, which faces the outer profile element 4, is at a height corresponding to the height at which the upper wall 47 of the outer profile element 4 lies. Thus, all inner struts 33 are located in the inner profile element 3 such that the ends of the inner struts 33 that end at the side wall 34 of the inner profile element 3 lie in the region of the cross member 11. The opposite ends of the inner struts 33 are each at the level of the upper wall 47, the inner strut 43, and the lower wall 46 of the outer profile element 4.

[0056] In Fig. 4 shows a third embodiment of the longitudinal side part 20. This embodiment differs from the second embodiment according to Fig. 3 merely in that the connecting strut 39 is configured as a single piece with the inner profile element 3. In particular, the connecting strut 39 represents an extension of the bottom wall 36 of the inner profile element 3. The base 12 of the battery holder 1 is arranged on the inwardly extending connecting strut 39. In the embodiment shown, the base 12 is attached to the connecting strut 39 via a connection point 38.

[0057] The present invention is not limited to the illustrated embodiments. For example, the shape of the profile elements may deviate from the illustrated form. The number and orientation of the inner webs may also deviate from the illustrated embodiments. Furthermore, the coupling structure between the inner profile element and the outer profile element may also deviate from the illustrated embodiments. For example, coupling grooves may be provided on the outer profile element and coupling arms on the inner profile element. It is also possible for a coupling arm and a coupling groove to be provided on each of the profile elements.

[0058] The present invention creates a two-part frame concept for battery storage systems in vehicles comprising one or more battery modules. The inner part of the frame consists, for example, of a high-strength aluminum alloy, which creates a closed and sealed frame all around. The outer part of the frame consists, for example, of a less strong aluminum alloy. The separation is achieved in such a way that support against and distribution of loads is ensured in the event of deformation of the outer profile element, preferably at least in sections by means of linear or surface contact, for example by means of vertical surfaces. According to one embodiment, at least one locking projection is formed in one of the profile elements, which form at least the longitudinal side parts of the frame, into which a locking receptacle of the other profile element engages. The profile elements are preferably glued to one another over at least one vertical region. List of reference symbols 1 battery holder 10 Recording room 11 cross members 12 Floor 13 Connecting sleeve 2 frames 20 Long side part 21 Long side panel 22 front part 23 Back 3 inner profile element 30 profile chamber 31 coupling area 32 coupling groove 33 inner web 34 side wall 35 side wall 36 Lower wall 37 upper wall 38 connection point 39 Connecting strut 4 outer profile element 40 profile chamber 41 coupling area 42 coupling arm 43 inner web 44 side wall 45 side wall 46 Lower wall 47 upper wall 48 passage opening 49 bead

Claims

[1] Battery holder for a vehicle, comprising a frame (2) which at least partially delimits a receiving space (10) and which has two longitudinal side parts (20, 21), characterized by that the longitudinal side parts (20, 21) each consist of an inner profile element (3) and an outer profile element (4), the inner profile element (3) faces the receiving space (10) with a side wall (34) and the outer profile element (4) is connected to the inner profile element (3) at the opposite side wall (35) of the inner profile element (3), the inner profile element (3) is connected to the outer profile element (4) by gluing and form-fitting, the outer profile element (4) has at least one hollow chamber (40), the outer profile element (4) has a lower deformation resistance than the inner profile element (3) and the outer profile element (4) has a smaller wall thickness than the inner profile element (3) or the outer profile element (4) is made of a material which has a lower strength than the material of the inner profile element (3), and / or the outer profile element (4) is manufactured by heat treatment so that it has a lower strength than the material of the inner profile element (3). [2] Battery holder according to claim 1, wherein the outer profile element (4) and the inner profile element (3) are additionally connected to one another in a force-fitting manner. [3] Battery holder according to one of claims 1 or 2, wherein the inner profile element (3) represents an open or a closed profile element. [4] Battery holder according to one of claims 1 to 3, characterized by that the inner profile element (3) has at least one coupling structure (31, 32) for connection to the outer profile element (4), wherein the coupling structure (31, 32) is adapted to the contour of a coupling structure (41, 42) of the outer profile element (4). [5] Battery holder according to one of claims 1 to 4, wherein the inner profile element (3) has at least one connecting surface (39) for the assembly of a base (12), a tray and / or a cover of the battery holder (1). [6] Battery holder according to claim 5, wherein the connecting surface (39) represents a connecting strut (39) which extends inwards from the inner profile element (3) and is formed in one piece with the inner profile element (3), in particular extruded. [7] Battery holder according to one of claims 1 to 6, wherein at least the inner profile element (3) or the outer profile element (4) is produced by extrusion or by roll forming. [8] Battery holder according to one of claims 1 to 7, wherein at least one desired deformation zone is introduced into the outer profile element (4). [9] Battery holder according to one of claims 1 to 8, characterized bythat the outer profile element (4) and the inner profile element (3) have at least one outer or inner web (33) which forms a load path with at least one outer or inner web (33) of the respective other profile element (3, 4).

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