Protective device for an electrical energy storage device and arrangement

Abstract

The invention relates to a protective device (2) for an electrical energy storage device (4) for an electrically powered motor vehicle, with at least one mounting area (6) by which the protective device (2) is to be held on a lower side (7) of a storage housing (3) of the electrical energy storage device (4) which is formed separately from the protective device (2) and which points downwards in the vehicle height direction (5) of the motor vehicle, wherein the protective device (2) has an organosheet (8) with at least one rib structure (9).

Description

The invention relates to a protective device for an electrical energy store for an electrically drivable motor vehicle according to the preamble of claim 1.DE 10 2017 128 529 B4 discloses a motor vehicle battery, namely a traction battery of a motor vehicle, having a battery housing which has a housing interior region delimited in sections by a housing frame and a housing base. The motor vehicle battery has a plurality of battery modules arranged in the housing interior.Furthermore, DE 10 2022 132 714 A1 discloses an underbody protection for a motor vehicle, having at least one first protection element, a supporting structure having a plurality of ribs and at least one second protection element, wherein the supporting structure is arranged in a sandwich-like manner between the first protection element and the second protection element and is connected thereto in each case, the ribs extending between the first protection element and the second protection element, such that a plurality of cavities are formed between the first protection element and the second protection element.In addition, DE 10 2019 135 323 A1 discloses an underbody protection element for a motor vehicle, in particular an electric vehicle, having a core element of planar design made of a first thermoplastic material and at least one lower and one upper cover layer made of a second fiber-reinforced thermoplastic material, as known, wherein the cover layers are formed with the core element and are connected in a materially integral manner.Furthermore, DE 10 2022 126 585 B3 discloses an energy storage floor system for an electrically drivable motor vehicle.It is an object of the invention to provide a protective device for an electrical energy store for an electrically drivable motor vehicle and an arrangement of a protective device on a storage housing of an electrical energy store for an electrically drivable motor vehicle, such that safety against damage to the electrical energy store can be particularly increased and the electrical energy store can be repaired in a particularly low-complexity manner.This object is achieved according to the invention by a protective device for an electrical energy store for an electrically drivable motor vehicle having the features of patent claim 1 and by an arrangement of a protective device on a storage housing of an electrical energy store for an electrically drivable motor vehicle having the features of patent claim 8. Advantageous embodiments of the invention are the subject matter of the dependent claims and the description.A first aspect of the invention relates to a protective device, in particular a protective plate, for an electrical energy store for an electrically drivable motor vehicle. Preferably, the motor vehicle, in particular in its completely produced state, has the electrical energy store, and in particular the protection device. The protective device can be part of the electrical energy store, or the protective device can be formed separately from the electrical energy store.The motor vehicle is preferably designed as a passenger car. The electrically drivable motor vehicle can be understood in particular as a battery-electric vehicle or a hybrid vehicle. In other words, the motor vehicle has at least one electric machine, by means of which the motor vehicle can be driven, in particular purely electrically.The electrical energy store can be understood in particular as a battery or an accumulator. The electrical energy store is preferably designed as an electrical traction store, in particular as a traction battery, of the motor vehicle. This means that the electric machine of the motor vehicle can be supplied or is supplied with energy stored or chemically bound in the electrical energy store for driving the motor vehicle. The electrical energy store can be referred to in particular as a battery storage system.In order to be able to realize a particularly high electrical power for electrically, in particular purely electrically, driving the motor vehicle, the electrical energy store can have an electrical voltage, in particular an electrical operating voltage or rated voltage, which is preferably greater than 50 V, in particular above 60 V, and is preferably a plurality of 100 V. Accordingly, the electrical energy store is preferably designed as a high-voltage component, as a result of which the electrical energy store can be referred to as a high-voltage store.The electrical energy store has at least one storage housing. The electrical energy store preferably has at least one receiving space which is delimited or formed at least partially, in particular predominantly or completely, by the storage housing, in particular directly. Preferably, a plurality of memory elements, in particular memory cells, can be arranged or are arranged in the receiving space. The storage cells are preferably battery cells.Preferably, the electrical energy store, in particular in its installation position in the motor vehicle, is arranged in the vehicle vertical direction below a floor element, in particular a main floor, of a body of the motor vehicle. For example, the electrical energy store is to be held or held on the base element via the storage housing and / or via a supporting structure of the electrical energy store formed separately from the storage housing, in particular at least indirectly or directly.The protective device has at least one fastening region, by means of which the protective device is to be held or held, in particular at least indirectly or directly, on an underside, in particular in the installed position of the electrical energy store or of the protective device in the motor vehicle, of the storage housing of the electrical energy store which is formed separately from the protective device, said underside pointing downward in the vehicle vertical direction of the motor vehicle. In other words, the protective device can be fastened or fastened to the storage housing from below, in particular at least indirectly or directly, via the fastening region with respect to the vehicle vertical direction of the motor vehicle. This means that the protective device, in particular in its installation position on the electrical energy store or in the motor vehicle, is or can be arranged below or below the storage housing in the vehicle vertical direction.In order to be able to particularly increase safety against damage or destruction of the electrical energy store and to be able to repair the electrical energy store particularly inexpensively, in particular in the event of damage to the electrical energy store, it is provided according to the invention that the protective device has at least one, in particular exactly one, organosheet having at least one rib structure. In other words, the protective device has at least one organosheet which has at least one rib structure. Again in other words, the protective device is formed at least in regions, in particular predominantly or completely, by the organic sheet which has the at least one rib structure. This means that, in particular in the installation position of the protective device on the storage housing or in the motor vehicle, the underside of the storage housing can be covered or is covered at least in regions, in particular predominantly or completely, preferably directly, by the organosheet.The organosheet can be understood to mean, in particular, a structural element, in particular a plate-shaped structural element, which is formed from at least one fiber composite material. The fiber composite material preferably comprises at least one plastic, which is preferably designed as a matrix of the fiber composite material. Furthermore, the fiber composite material preferably comprises fibers, for example glass fibers. The fiber composite material thus preferably comprises a fiber fabric or a fiber laid scrim, wherein the fiber fabric or the fiber laid scrim is embedded in a, for example thermoplastic, plastic matrix.The rib structure can be understood in particular to mean that the organosheet is formed rib-shaped at least in regions, for example in at least one longitudinal region, that is to say that the organosheet has at least one ribbing. The rib structure preferably has a plurality or a plurality of ribs. The ribs are spaced apart from one another, for example, at least in regions.The installation position of the protective device on the storage housing can be understood in particular to mean an installation position of the protective device in which the protective device is held, in particular at least indirectly or directly, via the fastening region on the storage housing.The invention is based in particular on the following findings and considerations: a conventional electrical energy store can usually have a base made of steel or sheet metal, wherein this base can serve as a conventional protective device for the conventional electrical energy store from below or downwards in the vehicle vertical direction. In contrast, the protective device according to the invention is an additional protective device for the electrical energy store provided to the storage housing or the base of the storage housing, in particular in order to protect the electrical energy store from below in the vehicle vertical direction. As a result, in the event of an accident, intrusion and / or obstacle crossing of the motor vehicle, the protective device can be acted upon, in particular mechanically, as a result of which the electrical energy store, in particular the storage housing and the storage elements, can be protected particularly well. Damage to the electrical energy store, in particular to the storage housing, can thereby be kept particularly low. If damage to the protective device should nevertheless occur, the protective device can be replaced particularly inexpensively, in particular independently of the storage housing. As a result, the electrical energy store can be repaired with particularly low outlay, as a result of which, for example, repair costs of the electrical energy store, in particular of the motor vehicle, can be kept particularly low. This means that the protective device, for example if it has visible damage as a result of an accident, can be replaced or replaced for repairing the electrical energy store and the rest of the electrical energy store, in particular the storage housing, does not have to be repaired or replaced. Replacing the protective device can be understood in particular to mean replacing the protective device according to the invention by a further protective device according to the invention which is constructed separately from the protective device according to the invention and is of identical construction.Because the protective device has the organic sheet with the rib structure, the best possible protection can be made possible for the electrical energy store in a particularly weight-saving manner. By means of the rib structure, a stiffness of the organosheet can be particularly increased. This allows stability and / or acoustics of the protective device, in particular of the electrical energy store, to be particularly improved. The rib structure thus has, in particular, ribs for increasing the inherent rigidity of the organosheet. Overall, it can be seen that by means of the protective device according to the invention, in particular while maintaining the freedom from the floor of the motor vehicle, improved properties with respect to acoustics, in particular aeroacoustics, and / or damping of impacts of the electrical energy store, in particular of the motor vehicle, can be achieved.Furthermore, it is provided that the protective device, in particular the organic sheet, has at least one base body, by means of which, in particular in the installed position of the protective device on the storage housing or in the motor vehicle, the underside of the storage housing can be covered or covered at least in regions, in particular predominantly or completely, preferably directly. In other words, in the installation position of the protective device on the storage housing or in the installation position in the electrical energy store, the base body extends below or below the storage housing with respect to the vehicle vertical direction. This means that the storage housing, in particular with respect to the installation position of the protective device in the motor vehicle, can be delimited or is delimited downwardly, in particular directly, by the main body in the vehicle vertical direction. This means that the underside of the storage housing is covered at least in regions by the base body when the protective device is held on the storage housing via the fastening region. As a result, the electrical energy store can be protected particularly securely in the event of a mechanical load acting on the electrical energy store from below in the vehicle vertical direction.Furthermore, it is provided that the protective device, in particular the organic sheet, has at least one cover element which adjoins the main body at least indirectly, in particular directly, toward the front in the vehicle longitudinal direction of the motor vehicle, in particular with respect to the installation position of the protective device in the motor vehicle. In other words, the cover element is arranged in front of the base body in the vehicle longitudinal direction of the motor vehicle. By means of the cover element, a front side of the storage housing, which front side points forward in the vehicle longitudinal direction of the motor vehicle, in particular in the installation position of the protective device on the storage housing or in the motor vehicle, can be covered or covered at least partially, in particular predominantly or completely, preferably directly. This means that the front side of the storage housing is at least partially coverable or covered by the cover element when the protective device is held on the storage housing via the fastening region. In other words, the front side of the storage housing, in the installation position of the protective device on the storage housing or the electrical energy store, is overlapped at least in regions in the vehicle longitudinal direction towards the front by the cover element. As a result, the electrical energy store, in particular the storage housing, can be protected particularly securely from the front when mechanically acted upon in the longitudinal direction of the vehicle. In particular, a detachment of the protective device, in particular of the base body, from the storage housing caused by the mechanical load can be particularly reliably avoided in this case. The mechanical load capacity of the electrical energy store, in particular of the protective device, can thus be particularly increased. The cover element can be understood to mean, in particular, a front region of the protective device, in particular of the organosheet, with respect to the vehicle longitudinal direction, which at least partially surrounds or encompasses the storage housing toward the front in the vehicle longitudinal direction.Alternatively or additionally, it is provided that the organic sheet, in particular the base body, has at least one air guide surface, by means of which, when the protective device is installed in the motor vehicle, air flowing to the protective device, in particular the electrical energy store, can be guided during a journey of the motor vehicle. In other words, the air guide surface can be acted upon with air during the travel of the motor vehicle. The air can be directed in a targeted manner by the air-guiding surface, as a result of which aerodynamics, in particular air resistance, of the motor vehicle can be particularly improved. The air can be understood to mean, in particular, relative wind. The guidance of the air can be understood in particular to mean a flow around or along the air on the air guide surface and / or a deflection or deflection of the air by means of the air guide surface. The air-guiding surface can be referred to in particular as a first air-guiding surface.It is particularly preferably provided that the protective device is able to be fastened or fastened to the storage housing in such a way that it can be reversibly detached from the storage housing, in particular at least indirectly or directly, via the fastening region. This means that the protective device can be disassembled from the storage housing in a non-destructive manner. The protective device is thus designed as a protective component which can be mounted on the storage housing and can be removed from the storage housing, in particular in a non-destructive manner.In a further embodiment, it is provided that the rib structure has at least two ribs extending obliquely or perpendicularly to one another. In other words, a main extension direction of at least one first rib of the rib structure runs in a first direction and a main extension direction of at least one second rib of the rib structure, which rib is different from the first rib in particular, runs in a second direction running obliquely or perpendicularly to the first direction. As a result, the rigidity of the protective device, in particular of the organosheet, can be particularly increased in a particularly weight-favourable manner. Due to the particularly high rigidity, the mechanical load-bearing capacity of the protective device can be particularly increased and / or an acoustic behavior of the protective device can be particularly improved.In a further embodiment, it is provided that at least two of the ribs of the rib structure cross one another. This means that the rib structure has at least two, in particular mutually different, intersecting ribs. In other words, the at least one first rib, in particular at least one of the first ribs, and the at least one second rib of the rib structure, in particular at least one of the second ribs, cross. As a result, the rigidity of the organosheet, in particular of the protective device, can be particularly increased. The intersecting ribs can be understood in particular as cutting the ribs. This means that at least two of the ribs extending obliquely or perpendicularly to one another touch one another, in particular directly.In a further embodiment, it is provided that the protective device, in particular the organic sheet, is plate-shaped. In other words, the protective device, in particular the organosheet, is designed as a plate. As a result, the electrical energy store can be protected particularly well from damage in a particularly low-complexity manner. The plate can be understood in particular as a protective plate.Preferably, it is provided that the base body has the rib structure. This means that the rib structure is formed at least partially, in particular predominantly or completely, by the base body.Preferably, it is provided that the base body and the cover element are formed integrally together. In other words, the base body and the cover element are formed integrally with one another. This means that the base body and the cover element are formed from one piece, for example a monoblock. Thus, in the case of a one-piece construction, the base body and the cover element are not components which are formed separately from one another and are connected to one another. Alternatively, the base body and the cover element can be formed separately from one another.Preferably, it is provided that the underside of the storage housing relative to the base body and the cover element is coverable or covered exclusively by the base body, in particular downwards in the vehicle vertical direction. Preferably, it is provided that the front side of the storage housing relative to the base body and the cover element is coverable or covered exclusively by the cover element, in particular forwards in the vehicle longitudinal direction.In a further embodiment, it is provided that the cover element has at least two walls extending obliquely or perpendicularly to one another. In other words, the cover element has at least one first wall which extends in a first direction of extension, and the cover element has at least one second wall, in particular a second wall which is different from the first wall and extends in a second direction of extension which extends obliquely or perpendicularly to the first direction of extension. Preferably, it is provided that the walls extend further forward in the vehicle longitudinal direction of the motor vehicle than the storage housing in the installation position of the protective device on the storage housing or in the electrical energy store, in particular with respect to the installation position of the protective device in the motor vehicle. In other words, both walls of the cover element are arranged at least in regions further forward in the vehicle longitudinal direction than the storage housing, in particular the front side of the storage housing, when the protective device is held on the storage housing via the fastening region. As a result, on the one hand, a particularly reliable protection of the energy store can be effected and, on the other hand, a particularly aerodynamically optimized incident flow of the protection device can be realized.The walls are preferably formed integrally together. In other words, the cover element is formed in one piece.In a further embodiment, it is provided that, in the installed position of the protective device on the storage housing or in the electrical energy store, at least one gap is provided between one of the walls, in particular the first wall, by means of which the front side of the storage housing is at least partially, in particular directly, coverable or covered, and the storage housing. In other words, one of the walls, in particular the first wall, is spaced apart from the storage housing, in particular in the vehicle longitudinal direction, forming a free space. The gap is bounded in the vehicle vertical direction downwards by the other of the walls, in particular the second wall, preferably directly. The gap can function under mechanical load, in particular deformation, of the first wall, which delimits the gap in the vehicle longitudinal direction toward the front, in particular directly, for the dissipation of collision energy, that is to say as a crumple zone. Damage to the electrical energy store can thereby be particularly reliably avoided. Furthermore, the gap allows the protective device to be mounted on the storage housing with particularly low outlay. Alternatively or additionally, tolerances can be compensated or taken into account by the gap, as a result of which the production outlay, in particular production costs, of the protective device and / or of the storage housing can be kept particularly low. The tolerances can be understood to mean, in particular, manufacturing tolerances of the storage housing and / or of the protective device.In a further embodiment, it is provided that the cover element has at least one second air guide surface, in particular one different from the first air guide surface, by means of which, in the installed position of the protective device in the motor vehicle, during or during the travel of the motor vehicle, the air flowing to the protective device, in particular the cover element, can be guided, in particular from the second air guide surface, preferably in a targeted manner, to the first air guide surface. In other words, the air flowing onto the second air guide surface can be deflected in a targeted manner by means of the second air guide surface in order to guide the air from the second air guide surface to the first air guide surface. As a result, flow separation can be avoided or reduced, for example. Alternatively or additionally, negative aeroacoustic effects which can be caused by the relative wind can be particularly reliably avoided or reduced.A second aspect of the invention relates to an arrangement of at least one protective device on a storage housing of an electrical energy store for an electrically drivable motor vehicle. Advantages and advantageous configurations of the first aspect of the invention are to be regarded as advantages and advantageous configurations of the second aspect of the invention, and vice versa.The protective device has at least one fastening region, by means of which the protective device is held, in particular at least indirectly or directly, on an underside of the electrical energy store, which underside points downward in the vehicle vertical direction of the motor vehicle, on the storage housing of the electrical energy store, which housing is formed separately from the protective device.In order to be able to particularly increase safety against damage to the electrical energy store and to be able to particularly simplify repair of the electrical energy store, it is provided according to the invention that the protective device has at least one organosheet having at least one rib structure.Furthermore, the organic sheet has at least one base body, by means of which the underside of the storage housing is covered at least in regions. The protective device has at least one cover element which adjoins the main body at least indirectly toward the front in the vehicle longitudinal direction of the motor vehicle and by means of which a front side of the storage housing which points toward the front in the vehicle longitudinal direction of the motor vehicle is at least partially covered.Alternatively or additionally, the organic sheet has at least one air guide surface, by means of which air flowing onto the protective device can be guided when the motor vehicle is in the installed position of the protective device in the motor vehicle.It is preferably provided that the organic sheet has at least one outer side, in particular facing downward in the vehicle vertical direction in the installed position of the protective device in the motor vehicle, and in particular facing a surroundings of the motor vehicle, preferably directly. The outer side is preferably facing away from the fastening region.Further features of the invention are evident from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination but also in other combinations or alone.The invention will now be explained in more detail on the basis of a preferred exemplary embodiment and with reference to the drawings. The following are shown: FIG. 1 is a schematic perspective view of an arrangement according to the invention; and FIG. 2 shows a schematic perspective view of an arrangement according to the invention according to a further embodiment; and FIG. 3 shows a schematic partial sectional view of an arrangement according to the invention.In the figures, identical or functionally identical elements are provided with identical reference symbols.FIG. 1 shows a schematic perspective view of an arrangement 1 of a protection device 2 on a storage housing 3 of an electrical energy store 4 for an electrically drivable motor vehicle. The arrangement 1 is shown in FIG. 1 in perspective from below with respect to a vehicle vertical direction 5 of the motor vehicle. The protective device 2 is designed or provided for, in particular, mechanical protection for the electrical energy store 4 of the electrically drivable motor vehicle.The protective device 2 has at least one fastening region 6, by means of which the protective device is to be held or held on an underside 7, pointing downward in the vehicle vertical direction 5 of the motor vehicle, of the storage housing 3 formed separately from the protective device 2, in particular at least indirectly or directly. The protective device 2 is thus arranged at least predominantly, in particular completely, on the underside 7 of the storage housing 3. For example, the protective device 2 is screwed or glued to the storage housing 3 via the fastening region 6. In particular when the protective device 2 is screwed to the storage housing 3 via the fastening region 6, the protective device 2 can be detached from the storage housing 3 in a particularly low-complexity reversible or non-destructive manner.In order to be able to particularly increase a safety of the electrical energy store 4 with respect to damage and to be able to carry out a possible repair of the electrical energy store 4 with a particularly low outlay, it is provided that the protective device 2 has at least one organosheet 8 having at least one rib structure 9. The rib structure 9 can particularly increase a stiffness of the organosheet 8, as a result of which particularly advantageous acoustic behavior of the protective device 2, in particular of the electrical energy store 4, can be enabled.The protective device 2, in particular the organic sheet 8, and the storage housing 3 are preferably formed from materials different from one another. This means that the protective device 2, in particular the organosheet 8, is formed for example from a first material, and that the storage housing 3 is formed for example from a second material different from the first material. The storage housing 3 is formed, for example, at least partially, in particular predominantly or completely, from a metallic material.The organosheet 8 is formed at least predominantly, in particular completely, from at least one fiber-reinforced, in particular glass fiber-reinforced, plastic. As a result, the organic sheet 8 can be referred to as a glass fiber organic sheet, for example. For example, the organosheet 8 is formed at least in regions, in particular predominantly, from polyamide, in particular polyamide 6, or from polypropylene. The organic sheet 8 is preferably free of metal, in particular free of armour steel.Preferably, the rib structure 9 has a plurality of ribs 10, 11, in particular different from one another. In the exemplary embodiment, the rib structure has a plurality of, for example twelve, first ribs 10 and a plurality of, for example two, second ribs 11. The first ribs 10 run, for example, parallel to one another. The second ribs 11 extend, for example, parallel to one another. As shown in FIG. 1 by way of example, the first and the second ribs 10, 11 extend obliquely or perpendicularly to one another. Furthermore, in the exemplary embodiment, it is provided that at least two of the ribs 10, 11 of the rib structure 9 cross one another. For example, a first of the second ribs 11 crosses a plurality, for example six, of the first ribs 10. For example, the second of the second ribs 11 crosses a plurality, for example six, of the first ribs 10.For example, the second ribs 11 extend at least substantially in the vehicle transverse direction 13 of the motor vehicle. As shown in FIG. 1, the ribs 10, 11 preferably extend at least substantially in an, in particular imaginary, plane spanned by the vehicle longitudinal direction 12 and the vehicle transverse direction 13.In the exemplary embodiment, it is provided that the protective device 2, in particular the organic sheet 8, is of plate-shaped design. The organosheet 8 has, for example, a thickness of at least 0.5 mm, in particular at least 1 mm. For example, the thickness of the organosheet 8 is a maximum of 3 mm.It is preferably provided that the organic sheet 8 has at least one, in particular plate-shaped, base body 14, by means of which the underside 7 of the storage housing 3 can be covered or is covered at least in regions, in particular predominantly or completely. In the exemplary embodiment shown in FIG. 1, it is provided that the organic sheet 8, in particular the base body 14, protrudes beyond the storage housing 3 in the vehicle longitudinal direction 12 toward the front and / or toward the rear.FIG. 2 shows the arrangement 1 in a schematic perspective view, in particular from below, according to a further embodiment, in which the protective device 2, in particular the organic sheet 8, has at least one cover element 15 which adjoins the main body 14 at least indirectly, in particular directly, toward the front in the vehicle longitudinal direction 12 of the motor vehicle and by means of which a front side 16 of the storage housing 3 which points toward the front in the vehicle longitudinal direction 12 of the motor vehicle can be covered or is covered at least partially, in particular predominantly or completely.In the exemplary embodiment shown in FIG. 2, the cover element 15 has at least two walls 17, 18 which extend obliquely or perpendicularly to one another and which, in the installed position 19 of the protective device 2 on the storage housing 3, extend at least in regions further forwards than the storage housing 3 in the vehicle longitudinal direction 12 of the motor vehicle.For example, in the installation position 19 of the protective device 2 on the storage housing 3, at least one gap 20 is provided between a first of the walls 17, by means of which the front side 16 of the storage housing 3 is at least partially coverable or covered, and the storage housing 3 or its front side 16, which gap is bounded or formed in the vehicle vertical direction 5 downwards by the second of the walls 18, in particular directly. A main extension direction of the gap 20 runs, for example, in the vehicle transverse direction 13 of the motor vehicle.In a further embodiment, it is provided that the organic sheet 8, in particular the base body 14, has at least one first air guide surface 21, by means of which, in the installed position 19 of the protection device 2 in the motor vehicle, air flowing to the protection device 2, in particular the organic sheet 8, can be guided, in particular in a targeted manner, during a journey of the motor vehicle. For example, the air flowing onto the first air guide surface 21 can be guided by means of the first air guide surface 21, in particular along an underbody of the motor vehicle, in the direction of a vehicle rear of the motor vehicle.In a further embodiment, it is provided that the cover element, in particular at least one of the walls 17, 18, for example the second wall 18, has at least one second air-guiding surface 22, by means of which, in the installed position 19 of the protective device 2 in the motor vehicle, the air flowing onto the protective device 2, in particular the cover element 15, can be guided, in particular in a targeted manner, to the first air-guiding surface 21 during the travel of the motor vehicle. For example, the walls 17, 18 are connected to one another via at least one edge 23, in particular directly, wherein the edge 23 is preferably designed as an aerodynamic edge, which can be referred to in particular as an aero edge.For example, the walls 17, 18 extend at an angle to each other which is greater than 90 degrees. As a result, the air can be guided to the first air guide surface 21 in an aerodynamically particularly efficient manner. The first wall 17 runs, for example, at least substantially in the vehicle vertical direction 5. The second wall 18, in particular the second air-guiding surface 22, runs, for example, obliquely to the first air-guiding surface 21.For example, the organic sheet 8, in particular the base body 14, has a plurality of, for example four, recesses 24, which are each provided or formed for a respective vehicle jack receptacle of the motor vehicle. This is illustrated in FIG. 2.The organic sheet 8, in particular the protective device 2, is formed, for example, in one piece. This means that the organic sheet 8, in particular the protective device 2, is designed, for example, in an integral construction. Alternatively, the organic sheet 8, in particular the protective device 2, is formed, for example, in multiple pieces or in multiple pieces. The multi-part embodiment is advantageous in particular when the organic sheet 8 has the recesses 24. In this case, an assembly of the protective device 2 and / or the jack receptacle can be particularly simplified. If the organic sheet 8 is formed in multiple parts, the organic sheet 8 is formed in three parts, for example.The protective device 2 is, for example, at least predominantly, in particular completely, free of metal.FIG. 3 shows the arrangement 1 in a schematic partial sectional view according to a further embodiment, in which the protective device 2 has at least one fastening aid 25 formed from metal, which can be referred to in particular as a metal insert. The fastening aid 25 serves for screwing the protective device 2, in particular the organosheet 8, to the storage housing 3.In the exemplary embodiment shown in FIG. 3, the fastening aid 25 has at least one through-opening 26, in which at least one screw element, in particular at least one screw, for screwing the protective device to the storage housing 3 is or can be arranged. The fastening aid 25 is arranged between a screw head 28 of the screw element 27 and the storage housing 3. The fastening aid 25 extends at least in regions within a through-opening 29 of the protective device 2, in particular of the organosheet 8. Preferably, the fastening aid 25 is connected in a form-fitting manner to the organic sheet 8. For example, a plurality of the fastening aids 25 are provided, which are each spaced apart from one another by 50 to 100 mm, for example.Numerialia such as "first", "second", "third", etc. are provided in particular merely for differentiation and do not denote any order. That is, the corresponding numeriala may be arbitrarily interchanged.List of reference characters1 Arrangement 2 Protective device 3 Storage housing 4 Energy store 5 Vehicle vertical direction 6 Fastening region 7 Underside 8 Organo sheet 9 Rib structure 10 First rib 11 Second rib 12 Vehicle longitudinal direction 13 Vehicle transverse direction 14 Base body 15 Cover element 16 Front side 17 First wall 18 Second wall 19 Installation position 20 Gap 21 First air guide surface 22 Second air guide surface 23 Edge 24 Recess 25 Fastening aid 26 Passage opening 27 Screw element 28 Screw head 29 Passage opening

Claims

Protective device (2) for an electrical energy store (4) for an electrically drivable motor vehicle, having at least one fastening region (6) via which the protective device (2) is to be held on an underside (7) of a storage housing (3) of the electrical energy store (4) which underside points downwards in the vehicle vertical direction (5) of the motor vehicle, said storage housing being formed separately from the protective device (2), characterized in that the protective device (2) has an organosheet (8) having at least one rib structure (9), • the organosheet (8) having at least one main body (14) by means of which the underside (7) of the storage housing (3) can be covered at least in regions, and the protective device (2) has at least one cover element (15) which adjoins the main body (14) at least indirectly towards the front in the vehicle longitudinal direction (12) of the motor vehicle, by means of which a front side (16) of the storage housing (3) facing forward in the vehicle longitudinal direction (12) of the motor vehicle can be at least partially covered, and / or • the organic sheet (8) has at least one air guide surface (21), by means of which air flowing onto the protection device (2) can be guided when the motor vehicle is travelling in the installed position (19) of the protection device (2) in the motor vehicle.Protective device (2) according to claim 1, characterised in that the rib structure (9) has at least two ribs (10, 11) extending obliquely or perpendicularly to one another.The protection device (2) according to claim 2, characterized in that at least two of the ribs (10, 11) of the rib structure (9) cross each other.The protective device (2) according to any one of the preceding claims, characterized in that the protective device (2) is plate-shaped.The protective device (2) according to any one of the preceding claims, characterized in that the cover element (15) has at least two walls (17, 18) which extend obliquely or perpendicularly to one another and which, in the installation position (19) of the protective device (2) on the storage housing (3), extend at least in regions further forwards than the storage housing (3) in the vehicle longitudinal direction (12) of the motor vehicle.Protective device (2) according to Claim 5, characterized in that, in the installed position (19) of the protective device (2) on the storage housing (3), between one of the walls (17, 18), by means of which the front side (16) of the storage housing (3) can be at least partially covered, and the storage housing (3), at least one gap (20) is provided, which is bounded downwardly by the other of the walls (17, 18) in the vehicle vertical direction (5).The protection device (2) according to any one of the preceding claims, characterized in that the cover element (15) has at least one second air guide surface (22), by means of which, in the installed position (19) of the protection device (2) in the motor vehicle, the air flowing onto the protection device (2) can be guided to the air guide surface (21) during the travel of the motor vehicle.Arrangement (1) of a protection device (2) on a storage housing (3) of an electrical energy store (4) for an electrically drivable motor vehicle, in which the protection device (2) has at least one fastening region (6), by means of which the protection device (2) is held on an underside (7) of the storage housing (3) of the electrical energy store (4) which underside points downwards in the vehicle vertical direction (5) of the motor vehicle, said underside being formed separately from the protection device (2), characterized in that the protection device (2) has an organic sheet (8) having at least one rib structure (9), • the organic sheet (8) having at least one basic body (14), by means of which the underside (7) of the storage housing (3) is covered at least in regions, and the protective device (2) has at least one covering element (15) which adjoins the main body (14) at least indirectly toward the front in the vehicle longitudinal direction (12) of the motor vehicle and by means of which covering element a front side (16) of the storage housing (3) which points toward the front in the vehicle longitudinal direction (12) of the motor vehicle is at least partially covered, and / or • the organic sheet (8) has at least one air guide surface (21) by means of which air flowing onto the protective device (2) can be guided when the motor vehicle is travelling in the installation position (19) of the protective device (2) in the motor vehicle.

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