Energy store in a fixed arrangement on the underbody of a motor vehicle and motor vehicle

Abstract

The invention relates to a fixing arrangement (1) for an energy accumulator (2) on a floor (3) of a vehicle body (4) for a motor vehicle, the energy accumulator being configured for storing electrical energy, the energy accumulator (2) being fixed to the floor (3) of the vehicle body (4) in the fixing arrangement, wherein the floor (3) has a central passage (6) in which at least one subregion (T) of an exhaust system (8) of the motor vehicle extends, wherein on both sides of the central passage (6) and the exhaust system (8) in the vehicle transverse direction (11) there are arranged storage devices (9, 10) of the energy accumulator (2), the respective storage device (9, 10) of the energy accumulator being fixed to the floor (3) by means of at least one respective fixing device (14, 15) in such a way that, as a result of a force loading in the vehicle transverse direction (11) as a result of an accident, the fixing of at least one of the storage devices (9, 10) can be released in a targeted manner and the at least one storage device (9, 10) can be displaced inwards relative to the floor (3) in the vehicle transverse direction (11).

Description

Technical Field

[0001] This invention relates to a fixed arrangement structure for an energy storage device on the underside of a motor vehicle body. This invention also relates to a motor vehicle. Background Technology

[0002] DE102010012109A1 discloses a vehicle having an energy storage unit arranged on the vehicle's body structure. Furthermore, a bottom assembly of a motor vehicle is known from DE102018100555A1. Summary of the Invention

[0003] The objective of this invention is to provide a fixed arrangement structure for an energy storage device on the underside of a motor vehicle and the motor vehicle, thereby enabling particularly advantageous accident behavior.

[0004] The first aspect of the invention relates to a fixed arrangement structure of an energy storage device on the bottom of a self-supporting body for a motor vehicle, particularly a passenger car, also referred to as the vehicle body bottom. The energy storage device can store electrical energy or current. For example, at least one motor of the motor vehicle can be powered using the electrical energy stored in the energy storage device, thereby allowing the motor to operate, for example, in motor operation and thus as an electric motor. For example, the motor vehicle can thus be electrically driven, particularly purely electrically driven, by the motor. In the case of the fixed arrangement structure, the energy storage device is fixed to the bottom of the vehicle body. In particular, it is preferred that the energy storage device is arranged below the bottom in the vertical direction of the vehicle, such that, for example, the energy storage device is at least partially, particularly at least mostly or completely covered by or overlapped with the bottom in the vertical direction of the vehicle. When the motor vehicle is fully constructed, the body forms or defines, for example, a passenger space, also referred to as the interior space of the motor vehicle, in which occupants, such as the driver of the motor vehicle, can be located during the operation of the motor vehicle. Here, the passenger space extends downwards through the bottom boundary in the vertical direction of the vehicle, at least partially, particularly at least mostly or completely. Since, for example, the energy storage device is arranged vertically below the bottom of the vehicle, the energy storage device is arranged on the outside of the bottom that points downward in the vertical direction of the vehicle and is therefore away from the passenger space, so that the energy storage device can be arranged on the underside of the vehicle, especially the bottom.

[0005] To achieve particularly advantageous accident behavior in motor vehicles and exceptionally large energy storage capacity according to the invention, the bottom has a central channel in which at least one sub-region for the exhaust system of the motor vehicle extends. Therefore, the motor vehicle is preferably configured as a hybrid vehicle, particularly a plug-in hybrid electric vehicle (PHEV), wherein the motor vehicle, in its fully manufactured state, includes, for example, the aforementioned electric motor for (especially pure) electric drive of the motor vehicle and an internal combustion engine for driving the motor vehicle via an internal combustion engine. During its ignition operation, the internal combustion engine provides exhaust gas that can flow through the exhaust system and thus through the aforementioned sub-region of the exhaust system. For example, the internal combustion engine has an output shaft configured as a crankshaft, through which the internal combustion engine can provide torque for driving the motor vehicle. In particular, the internal combustion engine can drive at least or exactly two wheels of the motor vehicle via its output shaft. For example, the internal combustion engine can drive the wheels of the motor vehicle via a hinged shaft configured as a universal joint, which can be at least partially housed within the central channel. Each wheel is also referred to as a vehicle wheel and is a ground contact element, through which the motor vehicle can be supported or can be supported downward in the vertical direction of the vehicle on the road.

[0006] In the fixed arrangement according to the invention, it is further specified that energy storage devices of the energy storage device are arranged on both sides of the central tunnel and the exhaust device in the lateral direction of the vehicle. This means that at least one or exactly one energy storage device of the energy storage device is arranged not only on the right side of the central tunnel in the lateral direction of the vehicle but also on the left side of the central tunnel in the lateral direction of the vehicle, wherein electrical energy can be stored by means of or in the energy storage device. For example, the corresponding energy storage device comprises a plurality of individual storage battery cells in which electrical energy can be stored. The corresponding storage battery cells of the corresponding energy storage device are, for example, electrically connected to each other.

[0007] The respective storage devices of the energy accumulator are fixed to the bottom by at least one corresponding fixing device, such that the fixing of at least one of the storage devices, achieved by the corresponding fixing arrangement structure, can be selectively disengaged due to the force loading caused by the accident, which extends in the lateral direction of the vehicle—especially from the outside to the inside. This allows the at least one storage device to be displaced inward relative to the bottom in the lateral direction of the vehicle. Consequently, the at least one storage device can be moved or compressed, or moved into or pressed into the central channel (also simply referred to as the passageway), and / or moved or compressed, or moved into or pressed into the exhaust device, by the force loading caused by the accident—especially locally—thereby deforming, for example, the central channel or the exhaust device. Thus, the accident energy can be converted into deformation energy in a particularly advantageous manner, and therefore absorbed. Therefore, the probability of excessive damage to the energy accumulator can be kept particularly low. The background of this invention is particularly evident in the case of the fixed arrangement structure or motor vehicle, where it is not possible or possible to arrange the energy accumulator to extend uninterruptedly across the entire width of the bottom in the lateral direction of the vehicle because the bottom has a central channel for storing the exhaust equipment in a space-advantageous manner and, if necessary, also for storing the aforementioned articulated shaft in a space-advantageous manner. In other words, the central channel, also referred to as the body channel, or the installation space defined by the central channel, is used for the exhaust equipment and, if necessary, for the articulated shaft. Therefore, the energy accumulator cannot extend continuously across the entire width of the bottom, and thus cannot provide an energy accumulator for forming a lateral load path extending continuously across the entire width of the bottom, via which the accident force or accident energy can be guided and supported during a side impact and therefore, especially during the loading of accident-induced forces acting from the outside to the inside in the lateral direction of the vehicle. In this context, adequate accident behavior is typically only achievable through very high cost and weight.

[0008] In this context, according to the present invention, the connection between the electrical energy storage device (preferably configured as a high-voltage accumulator) and the bottom is intentionally disabled or detached, thereby allowing advantageous relative movement between the at least one storage device and the vehicle body, particularly in the area of ​​the central passage, also simply referred to as the passage. Therefore, the at least one energy storage device can avoid force loading caused by an accident, thus ensuring not only the exceptionally high safety of the energy storage device but also the structural integrity of the vehicle body. Thus, overly weight-intensive and cost-intensive measures can be avoided.

[0009] It has been shown to be particularly advantageous that the corresponding storage device is equipped with at least one retaining element of the fixing device, which is constructed separately from the vehicle body and from the energy accumulator, i.e., separately from each storage device. The corresponding retaining element is preferably connected to the vehicle body, especially to the bottom. In particular, the retaining element can be detachably connected to the vehicle body, especially to the bottom, in a non-destructive manner. For example, the retaining element is welded to the vehicle body, especially to the bottom. Here, the corresponding storage device—especially reversibly detachable—that mates with the corresponding retaining element is fixed to the correspondingly mating retaining element. Thus, a particularly advantageous connection of the corresponding storage device to the bottom can be achieved, enabling particularly advantageous accident behavior.

[0010] It has been shown that, particularly advantageously, the corresponding retaining element has at least one predetermined failure point, at which the retaining element fails specifically due to force loading caused by an accident, thereby causing the at least one storage device to detach from its fixation on the bottom. For example, the predetermined failure point is a predetermined fracture point, at which the failure or breakage of the retaining element occurs when the force loading caused by the accident exceeds a predetermined or pre-determined level. Thus, the retaining element fails specifically under force loading caused by an accident, thereby enabling advantageous relative movement between the at least one storage device and the bottom—especially extending in the vertical direction of the vehicle.

[0011] Another embodiment is characterized in that the corresponding storage device is connected to the retaining element—particularly reversibly and detachably—by means of a fixing device, which is separate from the energy accumulator, separate from the vehicle body, and separate from the corresponding retaining element. Thus, the corresponding storage device is fixed to the retaining element and, via the retaining element, to the vehicle body, particularly to the bottom. For example, the connecting element is a threaded connection element, particularly constructed as a screw, by means of which the corresponding storage device is threaded against and connected to the corresponding retaining element. This allows for a particularly advantageous connection of the energy accumulator to the bottom, thereby achieving particularly good accident behavior.

[0012] It has been shown here that, particularly advantageously, the corresponding connecting element has at least one predetermined failure point, at which the corresponding connecting element fails specifically due to the force loading caused by the accident, thereby causing the fixation to disengage. This ensures particularly good relative movement between the energy storage device and the ground, thus enabling particularly advantageous accident behavior. The description above and below regarding the predetermined failure point of the retaining element can also be readily applied to the predetermined failure point of the corresponding retaining element, and vice versa.

[0013] It is conceivable that targeted disengagement is achieved not by, or solely by, one or more targeted failure points. Such targeted disengagement can be achieved, in particular, by appropriately selecting the materials and / or wall thicknesses of the bottom, retaining element, corresponding storage device, and / or connecting element. For example, the connecting element (especially constructed as a screw) has a diameter such that it withstands another accident condition, such as a frontal impact, without disengaging the storage device, but fails in a side impact, thus disengaging the storage device. Regarding the retaining element, also known as a retainer, it can be specified that the retainer is connected to the bottom via a weld point and / or has a wall thickness such that the retainer withstands another accident condition, such as a frontal impact, without disengaging the storage device, but disengages from the bottom and / or is destroyed in a side impact, thus disengaging the storage device from the bottom.

[0014] In a particularly advantageous embodiment of the invention, the corresponding connecting element works in conjunction with the corresponding storage device such that the connecting element—especially in the absence of failure—is specifically disengaged from the corresponding storage device due to force loading caused by an accident, thereby resulting in the fixed disengagement. For example, the connecting element is pulled off or pulled out of the storage device due to force loading caused by an accident, thus enabling relative movement between the corresponding storage device and the bottom in a particularly simple manner. Therefore, the corresponding storage device can avoid force loading caused by an accident, thereby achieving a particularly advantageous accident behavior.

[0015] In particular, when the force load caused by an accident exceeds a predetermined or pre-determined level, a corresponding predetermined failure point or targeted detachment occurs, i.e., the release of the fixation. This targeted detachment or corresponding predetermined failure point can be achieved, for example, by locally reducing the wall thickness and / or locally reducing the cross-section and / or by appropriately selecting appropriate materials. In other words, the targeted detachment of the fixation or corresponding failure point can be achieved through localized weak points, especially material weak points, and / or through targeted weakening of the connection between the two components, so that the connection or predetermined failure point can withstand a certain load without damage, and fail when the force load caused by the accident exceeds the maximum load. Thus, during normal operation, a sufficiently strong and stable connection of the energy storage device to the ground can be ensured. However, if a force recording occurs due to an accident, the at least one storage device can be targeted to detach from the bottom and move relative to the bottom. An embodiment in which the corresponding connecting element and the corresponding storage device work together to cause the connecting element to detach from the corresponding storage device due to a force load caused by an accident can be implemented, for example, by having a predetermined failure point at which the connecting element works with the corresponding storage device, particularly supporting it. If the force load caused by the accident exceeds a predetermined or pre-determined level, the predetermined failure point of the corresponding storage device fails, particularly breaks, thereby causing the connecting element to detach from the corresponding storage device, particularly to be pulled out of the corresponding storage device. The predetermined failure point is also referred to as the predetermined breakage point.

[0016] In order to achieve particularly advantageous accident behavior, in another embodiment of the invention, the bottom is provided to be arranged in the lateral direction of the vehicle between the side sills of the vehicle body, wherein the corresponding storage device is connected to the corresponding side sill.

[0017] To achieve particularly advantageous accident behavior, it has been shown that it is advantageous for the corresponding storage device to be at least partially covered or overlapped with the corresponding side sill in the lateral direction of the vehicle. This provides particularly advantageous protection for the corresponding storage device, thereby keeping, for example, the probability of excessive damage to the corresponding storage device particularly low.

[0018] Finally, another embodiment specifies that the corresponding storage device extends outward in the lateral direction of the vehicle beyond the corresponding side sill arranged on the same side as the storage device. In particular, the energy-absorbing element of the corresponding storage device can extend outward in the lateral direction of the vehicle beyond the corresponding side sill, thereby enabling particularly advantageous accident behavior.

[0019] According to a preferred embodiment of the fixed arrangement structure, at least one fixing device near or adjacent to the central aisle is designed to be selectively detachable. However, preferably, fixing devices of the storage device located away from the central aisle, such as in the area of ​​the side sill, are not designed to be selectively detachable. Preferably, only one fixing device near the central aisle, or multiple fixing devices near the central aisle (if multiple such fixing devices are provided), can be designed to be selectively detachable.

[0020] The fixing device can be constructed to secure the storage device to the central channel.

[0021] The storage device is preferably fixed at least at its edge in the area of ​​the side sill or at the side sill and in the area of ​​the central passage or at the central passage.

[0022] A second aspect of the invention relates to a motor vehicle, preferably configured as a passenger vehicle, comprising at least one fixed arrangement structure according to the first aspect of the invention. The advantages and advantageous designs of the first aspect of the invention should be regarded as advantages and advantageous designs of the second aspect of the invention, and vice versa. Attached Figure Description

[0023] Details of the invention will be illustrated below with reference to the accompanying drawings. In the drawings:

[0024] Figure 1 A schematic cross-sectional view of an energy storage device fixedly arranged according to the invention on the bottom of a vehicle body is shown.

[0025] Figure 2 Another schematic cross-sectional view of the fixed arrangement structure is shown in partial view; and

[0026] Figure 3 A schematic, perspective bottom view showing a portion of the base. Detailed Implementation

[0027] In the figure, the same or functionally identical elements are given the same reference numerals.

[0028] Figure 1A schematic cross-sectional view shows the fixed arrangement structure 1 of the electric energy storage device 2 on the bottom 3 of the self-supporting body 4 of a motor vehicle, especially a passenger car. This means that the motor vehicle, in its fully manufactured state, has a self-supporting body 4 and therefore a bottom 3 and an energy storage device 2. The motor vehicle is a hybrid vehicle, which further includes an internal combustion engine for driving the motor vehicle via an internal combustion engine and at least one motor motor for (especially pure) electric drive. Electrical energy or current is stored in or through the electric energy storage device 2. Since the motor vehicle can be driven by the motor, the motor is also referred to as a traction motor. In order to drive the motor vehicle by the motor, the electrical energy stored in the energy storage device 2 is supplied to the motor. Therefore, the energy storage device 2 is also referred to as a traction storage device. The motor and / or the energy storage device 2 are preferably high-voltage components, the voltage of which, especially the operating voltage or rated voltage, is preferably at least 48 volts, and preferably greater than 50 volts, especially greater than 60 volts. Preferably, the voltage is several hundred volts. This allows for particularly large electrical power for (especially pure) electric drive motor vehicles. As will be explained in detail below, in the fixed arrangement structure 1, the energy storage device 2 is fixed to the bottom 3, also known as the bottom of the vehicle body.

[0029] The vehicle body 4 at least partially defines the passenger space of the motor vehicle, also referred to as the interior space or passenger compartment. Here, the passenger space is at least partially, especially at least largely or completely defined downwards in the vertical direction of the vehicle by the bottom 3. Figure 1 The number 5 is represented by a double arrow. From... Figure 1 As can be seen, the bottom 3 has a central channel 6, which is formed in particular by channel elements 7 of the bottom 3 and therefore the body 4. The central channel 6 and therefore channel elements 7 belong to the bottom 3 and therefore to the body 4, which is also referred to as the body-in-white.

[0030] The motor vehicle also includes Figure 1 The exhaust device 8, which is particularly schematically shown and partially visible, is through which the exhaust gas from the internal combustion engine flows. From Figure 1 As can be seen, at least one sub-region T of the exhaust system 8 extends in the central tunnel 6. Furthermore, it is conceivable that at least one axle (not shown in the figure) (via which at least or exactly two wheels of the motor vehicle can be driven by an internal combustion engine) extends at least partially in the central tunnel 6. For example, this axle is an articulated axle, particularly a universal joint. The central tunnel 6 is arranged here to open downwards in the vertical direction of the vehicle and / or not overlap with the energy storage unit 2 at all, such that, for example, the central tunnel 6 does not overlap with or be covered by the energy storage unit 2 downwards in the vertical direction of the vehicle.

[0031] To achieve a particularly large storage capacity for the energy storage device 2, the energy storage device 2 has at least two storage devices 9 and 10, which are at least partially, especially at least largely or completely, spaced apart from each other in the lateral direction of the vehicle. Figure 1 The double arrow 11 is used to indicate this. For example, storage devices 9 and 10 are electrically connected to each other. Storage devices 9 and 10 are also referred to as halves of energy storage device 2, which is also called a high-voltage storage device. From Figure 1 As can be seen, for example, the energy storage device 9 is arranged on the left side of the central tunnel 6 or offset to the left relative to the central tunnel 6 in the lateral direction of the vehicle and with respect to the forward travel direction, while the energy storage device 10 is arranged on the right side of the central tunnel 6 or offset to the right relative to the central tunnel 6. Therefore, the energy storage device 9 is also referred to as the left half or left storage device, and the energy storage device 10 is referred to as the right half or right storage device. In other words, the energy storage devices 9 and 10 of the energy storage device 2 are arranged on both sides of the central tunnel 6 and the exhaust device 8 in the lateral direction of the vehicle, respectively, wherein the energy storage device 9 is adjacent to the central tunnel 6 and the exhaust device 8 to the left in the lateral direction of the vehicle, while the energy storage device 10 is adjacent to the central tunnel and the exhaust device to the right in the lateral direction of the vehicle.

[0032] The bottom 3 is arranged in the lateral direction of the vehicle body 4 between side sills 12 and 13 that are spaced apart from each other in the lateral direction of the vehicle body. A storage device 9 is connected to the side sill 12, and a storage device 10 is connected to the side sill 13. Here, the storage device 9 is at least partially covered outwards by the side sill 12 in the lateral direction of the vehicle, and the storage device 10 is at least partially covered outwards by the side sill 13 in the lateral direction of the vehicle. Furthermore, the respective storage device 9 or 10 is fixed to the bottom 3 by means of a corresponding fixing device 14 or 15, particularly to a corresponding channel element of the channel element 7, such that the fixing of at least one of the storage devices 9 and 10 by means of the fixing device 14 or 15 can be selectively detached due to the force loading extending in the lateral direction of the vehicle caused by an accident, thereby allowing the at least one storage device 9 or 10 to be displaced inwards relative to the bottom 3 in the lateral direction of the vehicle.

[0033] As previously described, the storage device 9 is generally arranged on the vehicle body 4 on the left side of the central passage 6 or the bottom 3, and the storage device 10 is arranged on the right side of the central passage or the bottom. The side on which the force load caused by the accident, such as a side impact or a pillar collision, acts directly is also referred to as the accident side or the impact-facing side. For example, if the force load caused by the accident acts from left to right in the lateral direction of the vehicle, such that the obstacle directly hits the left side, then the impact-facing side is the left side. However, if the force load caused by the accident acts from right to left in the lateral direction of the vehicle, such that the obstacle directly hits the right side, then the right side is the impact-facing side. At least one of the aforementioned storage devices 9 or 10 (whose fixation on the bottom 3 is detached due to the force load caused by the accident) is preferably a storage device 9 or 10 arranged on the impact-facing side. The at least one storage device 9 or 10 may move inward relative to the bottom 3 in the lateral direction of the vehicle due to the force loading caused by the accident and due to the disengagement of the at least one storage device 9 or 10 from its fixation on the bottom 3, and thereby be pressed against or into the exhaust device 8, for example. Therefore, the relatively soft or well-deformable exhaust device 8 can deform, thereby particularly advantageously absorbing accident energy. Thus, particularly advantageous accident behavior can be achieved in a weight-appropriate and cost-effective manner. The fixation of the at least one storage device 9 or 10 to the bottom 3 can be achieved, for example, through the targeted failure of a body component to which the at least one storage device 9 or 10 is at least indirectly, and especially directly, connected.

[0034] from Figure 2 and Figure 3It can be seen particularly clearly that the corresponding storage device 9 or 10 is equipped with at least one retaining element 16 of the corresponding fixing device 14 or 15, which is constructed separately from the body 4 and from the energy storage device 2 and is connected to the body 4, especially to the bottom 3. The retaining element 16 is also simply referred to as a retainer or body retainer and is welded, for example, to the body 4, especially to the bottom 3, and entirely, especially to one of the corresponding channel elements 7. It can be seen particularly clearly that at least one sub-region of the central channel 6 is formed or limited outward in the lateral direction of the vehicle by the retaining element 16. In particular, it is conceivable that the retaining element 16 associated with the at least one storage device 9 or 10 may fail specifically due to force loading caused by an accident, and thus allow relative movement between the at least one storage device 9 or 10 and the bottom 3. For this purpose, for example, the corresponding retaining element 16 is designed to have lower rigidity and / or strength than the storage element 7 or the bottom 3. In particular, it is conceivable that the corresponding retaining element 16 has at least one predetermined failure point, at which the corresponding retaining element 16 fails specifically due to force loading caused by an accident, thereby causing the at least one storage device 9 or 10 to detach from the bottom 3.

[0035] The corresponding retaining element 16 is arranged in or forms at least a portion of the corresponding connecting region B1 or B2, wherein the corresponding storage device 9 or 10 can be connected to the corresponding retaining element 16 or to the bottom 3. Furthermore, it is conceivable that the corresponding retaining element 16 is connected to the bottom 3 in the corresponding connecting region B1 or B2.

[0036] Alternatively or additionally, it is feasible for the corresponding retaining element 16 (especially in the corresponding connecting region B1 or B2) to be connected to the vehicle body 4, especially to the bottom 3, and completely, especially to at least one of the corresponding channel elements 7, such that the retaining element 16, coupled with the at least one storage device 9 or 10, is specifically disengaged from the vehicle body 4, especially from the bottom 3, and completely, especially from the at least one channel element 7 or from the connecting region B1 or B2, due to force loading caused by an accident, thereby causing the at least one storage device 9 or 10 to be disengaged from its fixation on the bottom 3. In other words, it is preferable to provide targeted failure of the corresponding connecting region B1 or B2 so that the at least one storage device 9 or 10 can be particularly well protected from force loading caused by an accident.

[0037] from Figure 2It can be seen particularly clearly that the corresponding fixing device 14 or 15 has at least one corresponding connecting element 17, which is constructed separately from the bottom 3, the corresponding retaining element 16, and the corresponding storage device 9 or 10, and is constructed, for example, as a threaded connection element. By means of the corresponding connecting element 17, the corresponding storage device 9 or 10—especially reversibly detachable—is connected to and thus fixed to the corresponding retaining element 16 and, via the retaining element, to the bottom 3. Currently, the corresponding storage device 9 is threaded against the corresponding retaining element 16 by means of the corresponding connecting element 17, especially reversibly detachable threaded connection. It is conceivable that the connection technology by which the corresponding storage device 9 or 10 is fixed to the retaining element 16 or the bottom 3 may fail specifically due to force loading caused by an accident; this can be particularly understood as the connection element 17 by which the at least one storage device 9 or 10 is fixed to the associated retaining element 16 may fail specifically due to force loading caused by an accident, thereby causing the fixation to detach. Therefore, the corresponding connecting element 17 may have at least one or exactly one designated failure point, at which the corresponding connecting element 17 (the at least one storage device 9 or 10 is fixed to the relevant retaining element 16 by means of the connecting element) fails specifically due to the force loading caused by the accident, thereby causing the fixation to detach.

[0038] Furthermore, it is feasible for the corresponding connecting element 17 to work in conjunction with the corresponding storage device 9 or 10, such that the corresponding connecting element 17—especially in the absence of failure—is specifically disengaged from the corresponding storage device, particularly from the corresponding storage device 9 or 10, due to the force loading caused by the accident, thereby resulting in the disengagement of the fixation. This can be understood in particular as follows: from Figure 2Taking the fixing device 14 and the storage device 9 as examples, it can be seen that the connecting element 17 works together with the storage device 9 to fix the storage device 9 to the retaining element 16, such that the connecting element 17 is supported at least indirectly, and especially directly, on the wall region W and therefore on the support region AB of the storage device 9. Thus, the storage device 9 is threadedly connected to the retaining element 16 via the wall region W or via the support region AB by means of the connecting element 17. The wall region W here has, for example, a local weak point or a local weak point of the storage device 9, so that the wall region W may have or be designed to have a failure point. Due to the force loading caused by an accident, such as the failure of the wall region W, especially such failure, the connecting element 17 is disengaged from the storage device 9. Thus, the fixing of the storage device 9 on the bottom 3 or on the retaining element 16 by means of the connecting element 17 can be released. Therefore, the storage device 9 can move inward in the lateral direction of the vehicle due to the force loading caused by an accident, thereby achieving a particularly advantageous accident behavior.

[0039] The at least one corresponding channel element 7, welded to a separate retainer for connecting the storage device 9 or 10, is, for example, a body channel bracket. The retainer welded to this body channel bracket is specifically detached from the bottom 3 and thus from the body 4 in the event of the force loading caused by an accident, such as a side impact or a pillar collision, so that the at least one storage device 9 or 10 can move relative to the bottom 3 toward the channel. Therefore, the retainer is designed to meet other requirements or accident scenarios, such as frontal or rear impacts, and sufficient operational strength. Alternatively or additionally, the connecting element 17 between the corresponding storage device 9 or 10 and the body channel can be specifically pulled out of the storage device 9 or 10, and / or the connecting element 17 itself can fail, so that the corresponding storage device 9 or 10, for example, designed as a high-voltage accumulator or high-voltage component by itself, can perform the aforementioned movement relative to the bottom 3 toward the channel. This allows for particularly advantageous accident behavior while avoiding excessively cost-intensive and weight-intensive measures.

[0040] List of reference numerals

[0041] 1 Fixed Arrangement Structure

[0042] 2 energy storage devices

[0043] 3 bottom

[0044] 4 body

[0045] 5 double arrows

[0046] 6 Central passages

[0047] 7-channel components

[0048] 8. Exhaust equipment

[0049] 9 storage devices

[0050] 10 storage devices

[0051] 11 Double Arrows

[0052] 12 side thresholds

[0053] 13 side thresholds

[0054] 14 Fixing devices

[0055] 15 Fixing devices

[0056] 16 holding elements

[0057] 17 Connecting elements

[0058] AB support area

[0059] B1 Connection Area

[0060] B2 Connection Area

[0061] T sub-region

[0062] W-wall area

Claims

1. Arrangement (1) for the fastening of an energy accumulator (2) on a floor (3) of a vehicle body (4) for a motor vehicle, the energy accumulator being configured for the storage of electrical energy, in the case of which arrangement the energy accumulator (2) is fastened on the floor (3) of the vehicle body (4), which floor (3) is arranged between side sills (12, 13) of the vehicle body (4) in the vehicle transverse direction (11), wherein The energy accumulator (2) is arranged below the floor in the vehicle vertical direction, characterized in that The floor (3) has a central channel (6) in which at least one subregion (T) of the exhaust system (8) of the motor vehicle extends, wherein on both sides of the central channel (6) and the exhaust system (8) in the vehicle transverse direction (11) there are arranged the storage devices (9, 10) of the energy accumulator (2), the respective storage device (9, 10) of the energy accumulator being fixed to the floor (3) by means of at least one respective fixing device (14, 15) in such a way that, as a result of a force loading in the vehicle transverse direction (11) as a result of an accident, the fixing of at least one of the storage devices (9, 10) can be released in a targeted manner and the at least one storage device (9, 10) can be displaced inwards in the vehicle transverse direction (11) relative to the floor (3), the respective storage device (9, 10) being connected to the respective side sill (12, 13) and the respective storage device (9, 10) projecting outwards in the vehicle transverse direction (11) beyond the respective side sill arranged on the same side as the respective storage device (9, 10), The respective storage device (9, 10) is connected to and thereby fixed to the holding element (16) by means of at least one respective connecting element (17) of the respective fixing device (14, 15) which is constructed separately from the energy accumulator (2), separately from the vehicle body (4) and separately from the respective holding element (16), and is fixed to the vehicle body (4) via the holding element (16), The connecting element (17) is constructed in such a way that the connecting element (17) withstands a frontal impact without the storage device being released, but fails in a side impact, so that the storage device is released, and / or the holding element (16) is connected and / or constructed in such a way that the holding element (16) withstands a frontal impact without the storage device being released, but is released from the floor and / or is destroyed in a side impact, so that the storage device is released from the floor.

2. The fixing arrangement (1) according to claim 1, characterized in that The respective storage device (9, 10) is provided with at least one holding element (16) of the fixing device (14, 15) which is constructed separately from the vehicle body (4) and separately from the energy accumulator (2) and is connected to the vehicle body (4), the respective storage device (9, 10) being fixed to the respective holding element (16) of the fixing device.

3. The fixture (1) according to claim 2, characterized in that The respective holding element (16) has at least one defined failure point at which the holding element (16) fails as a result of a force loading as a result of an accident, thereby causing the release of the fixing.

4. A fixture (1) according to claim 2 or 3, characterized in that The holding element (16) is connected to the vehicle body (4) in such a way that the holding element (16) is released from the vehicle body (4) as a result of a force loading as a result of an accident, thereby causing the release of the fixing.

5. The fixation arrangement (1) according to any one of claims 1 to 3, characterized in that The respective connecting element (17) has at least one set failure point, at which the respective connecting element (17) is intentionally failed by the force loading caused by the accident, thereby causing the release of the fastening.

6. The fixation arrangement (1) according to any one of claims 1 to 3, characterized in that The respective connecting element (17) interacts with the respective storage device (9, 10) such that the connecting element (17) is intentionally released from the respective storage device (9, 10) by the force loading caused by the accident, thereby causing the release of the fastening.

7. The fixation arrangement (1) according to any one of claims 1 to 3, characterized in that The respective storage device (9, 10) is at least partially covered by the respective side sill (12, 13) in the vehicle transverse direction (11).

8. The fixation arrangement (1) according to any one of claims 1 to 3, characterized in that At least one fastening device (14, 15) near the central tunnel is designed to be intentionally released, or only one fastening device (14, 15) near the central tunnel or only a plurality of fastening devices (14, 15) near the central tunnel are designed to be intentionally released.

9. Motor vehicle, having a fastening arrangement (1) according to any one of claims 1 to 8.

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