Device for holding the traction battery of a commercial vehicle

Abstract

The invention relates to a device (1) for receiving the traction battery of a commercial vehicle (10), in which several battery modules (5) of the traction battery are arranged linearly one behind the other in at least one battery module row (6) in the longitudinal direction (x-direction) of the vehicle. In at least one longitudinally extending (x-direction) support element (3) of the supporting structure (2) of the commercial vehicle (10), passage openings (4) are provided at intervals for the passage of a continuous support rail (7) arranged in the transverse direction (y-direction) of the vehicle between the two outer walls (11) of the commercial vehicle (10). A clamping bracket (8) is mounted on the support rail (7) on both sides of each passage opening (4). Each battery module (3) has two mounting brackets (16) on each of two opposing outer surfaces (13), which project beyond the top (14) of the battery module (5) and between which a mounting rail (18) is provided. Each battery module (5) can be slid onto each of the two support rails (7) by means of the mounting brackets (16).After sliding a respective battery module (5) onto two support rails (7), the two mounting rails (18) of the battery module (5) are connected to the two support rails (7) and the mounting brackets (16) of the battery module (5) are connected to a clamping console (8) in a form-fitting manner.

Description

[0001] The invention relates to a device for accommodating the traction battery of a commercial vehicle according to the preamble of patent claim 1.

[0002] On this topic, DE 10 2016 113 759 A1 discloses a fastening arrangement for the battery device of a commercial vehicle on a frame of a commercial vehicle, in which several modules combined to form a battery pack are inserted from above between two longitudinal members of the commercial vehicle.

[0003] Furthermore, DE 10 2020 004 026 A1 describes how, in a commercial vehicle, battery modules are inserted and secured laterally in receiving compartments connected to a frame structure consisting of longitudinal members and cross members.

[0004] Finally, DE 10 2017 007 490 A1 discloses a holding arrangement for batteries on a frame for a commercial vehicle, consisting of longitudinal members and cross members, in which battery modules of a traction battery of the commercial vehicle are applied laterally to the projecting cross members and then fastened to them.

[0005] The invention is based on the object of specifying a device for receiving the traction battery of a commercial vehicle, in which a process-reliable assembly or receiving of the battery modules of the traction battery of the commercial vehicle and a secure holding of the assembled battery modules of the traction battery of the commercial vehicle with advantageous properties is realized in a simple manner.

[0006] This object is achieved according to the invention by a device for receiving the traction battery of a commercial vehicle having the features recited in patent claim 1.

[0007] Advantageous further developments of the device according to the invention are part of the further patent claims.

[0008] In the device according to the invention for receiving the traction battery of a commercial vehicle with a plurality of battery modules, the battery modules of the traction battery arranged linearly one behind the other in at least one battery module row in the vehicle's longitudinal direction (x-direction) and their crash-safe connection to the supporting structure of the commercial vehicle takes place in particular via continuous support rails arranged in the vehicle's transverse direction (y-direction) between the two outer walls of the commercial vehicle.

[0009] These support rails, which are preferably designed as double tube profiles, therefore have a dual function: on the one hand as receiving elements for the battery modules and, on the other hand, as cross members of the supporting structure of the commercial vehicle and thus for stabilizing the supporting structure of the commercial vehicle.

[0010] For this purpose, at least one support element of the supporting structure of the commercial vehicle, preferably a respective longitudinal member of the supporting structure of the commercial vehicle, running in the longitudinal direction (x-direction) of the commercial vehicle, has passage openings arranged at a distance from one another in the longitudinal direction (x-direction) of the commercial vehicle. This means that the support elements of the supporting structure or the respective longitudinal members of the supporting structure of the commercial vehicle are cut out at specific locations. The respective support rails are inserted into these passage openings and thus guided through them, and are clamped on both sides of a passage opening via a clamping bracket in the transverse direction (y-direction) of the commercial vehicle.

[0011] Each battery module of the commercial vehicle's traction battery has two mounting brackets with a bracket opening on each of its two opposite outer surfaces. These mounting brackets, which extend beyond the top of the battery module, serve to accommodate a mounting rail arranged between them. In the case of a battery module row adjacent to the outer wall of the commercial vehicle, the mounting rail is already positively connected to the mounting brackets, for example, welded to them. In the case of a battery module row adjacent to the outer wall of the commercial vehicle, however, it is subsequently inserted between the mounting brackets.

[0012] Each battery module is slid onto two support rails via the mounting brackets. After being slid onto the two support rails, it is positively connected, preferably screwed, to the clamping brackets. The battery module mounting brackets are each positively connected to a clamping bracket in the transverse direction (y-direction) of the commercial vehicle, preferably screwed using fastening screws. The battery module's two mounting rails are each positively connected to a support rail in the longitudinal direction (x-direction) of the vehicle, preferably screwed using fastening screws.

[0013] In an advantageous development of the invention, a transverse support arranged in the vehicle's transverse direction (y-direction) is provided to relieve the load on the support rails arranged in the vehicle's transverse direction (y-direction). This transverse support is arranged on the underside of the outer side of the two outer battery modules of a battery module row of the commercial vehicle arranged in the vehicle's longitudinal direction (x-direction).

[0014] If several rows of battery modules are provided that are oriented in the vehicle's longitudinal direction (x-direction) and arranged next to each other in the vehicle's transverse direction (y-direction), this transverse support connects the outer battery modules of the battery module rows that are arranged in the vehicle's transverse direction (y-direction).

[0015] In a further advantageous development of the invention, an elastic, flexible longitudinal support connecting the battery modules of a battery module row is provided to minimize vibrations in the vehicle's longitudinal direction (x-direction). This longitudinal support is arranged on the underside of the outer side of the battery modules of a battery module row oriented in the vehicle's longitudinal direction (x-direction) of the commercial vehicle.

[0016] The battery modules of the commercial vehicle's traction battery can be easily slid onto the support rails that act as cross members during the commercial vehicle's manufacturing or assembly process, and can also be removed from the support rails again if necessary. This is particularly the case when several rows of battery modules are provided for the battery modules of the commercial vehicle's traction battery, oriented in the vehicle's longitudinal direction (x-direction) and arranged side by side in the vehicle's transverse direction (y-direction).

[0017] The device according to the invention for accommodating battery modules of the traction battery of a commercial vehicle advantageously enables simple and reliable assembly of the battery modules in the assembly process of the commercial vehicle, in which the battery modules can be arranged in a densely packed manner and can thus be accommodated in the commercial vehicle even when there is little available installation space.

[0018] This means that even large battery modules of the traction battery of a commercial vehicle can be accommodated in the commercial vehicle quite easily.

[0019] Furthermore, individual battery modules of the traction battery can be easily removed later for service purposes or in the event of repairs.

[0020] Further advantages, features, and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. The features and combinations of features mentioned above in the description, as well as 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 respective specified combinations, but also in other combinations or on their own, without departing from the scope of the invention.

[0021] Showing: Fig. 1 A schematic perspective view of a device for accommodating several battery modules of a commercial vehicle. Fig. 2 A schematic perspective view of the sliding of several battery modules of a commercial vehicle onto support rails in an outer row of battery modules. Fig. 3 A schematic perspective view of the sliding of several battery modules of a commercial vehicle onto support rails in an inner battery module row.

[0022] In the Fig. 1 shows the supporting structure 2 of a commercial vehicle 10 with the two longitudinal members 3 and a device 1 for receiving, for example, eight battery modules 5 of the traction battery of the commercial vehicle 10.

[0023] Here, the eight battery modules 5 of the traction battery of the commercial vehicle 10 are arranged in three battery module rows 6 located next to one another in the vehicle transverse direction (y-direction), wherein three battery modules 5 are arranged one behind the other in the two outer battery module rows 6 adjacent to the outer wall 11 of the commercial vehicle 10 in the vehicle longitudinal direction (x-direction) and two battery modules 5 are arranged one behind the other in the vehicle longitudinal direction (x-direction) in the inner battery module row 6 located between them on the inside.

[0024] On the underside 15 of the outer side 19 of each of the two outer battery modules 5 of a battery module row 6, a transverse support 20 is provided, oriented in the transverse direction of the vehicle (y-direction), which connects the outer battery modules 5 of the three battery module rows 6 to one another at their respective undersides 15. Furthermore, on the underside 15 of the outer side 21 of the battery modules 5 in the two outer battery module rows 6 adjacent to the outer wall 11 of the commercial vehicle 10, a longitudinal support 22 is provided, oriented in the longitudinal direction of the vehicle (x-direction), which connects the battery modules 5 of the two outer battery module rows 6 to one another at their respective undersides 15.

[0025] In the two longitudinal beams 3 of the support structure 2 of the commercial vehicle 10, there are provided through-openings 4 arranged at a distance from one another in the vehicle's longitudinal direction (x-direction), through which support rails 7 are guided, each oriented in the vehicle's transverse direction (y-direction) and extending between the two outer walls 11 of the commercial vehicle 10. In this case, for the exemplary embodiments mentioned and in the Fig. 1, in each of the two longitudinal beams 3 of the supporting structure 2 of the commercial vehicle 10, six through-openings 4 are provided as a cutout in the longitudinal beam 3, so that consequently six support rails 7, designed for example as double-tube profiles, are guided through these through-openings 4.

[0026] In the area of ​​the feed-through openings 4, the support rails 7 are each clamped in the transverse direction of the vehicle (y-direction) by means of a modular clamping bracket 8 which is plugged onto the support rails 7.

[0027] As from the Fig. 2 and the Fig. 3 with the schematic representation of several battery modules 5 of the traction battery of the commercial vehicle 10, four receiving brackets 16 with a bracket opening 17 are provided on the two opposite outer sides 13 of the battery module 5 for each battery module 5, said brackets projecting beyond the upper side 14 of the battery module 6.

[0028] According to the Fig. 2, for mounting the battery modules 5 of the two outer battery module rows 6 located on the two outer walls 11 of the commercial vehicle 10, a mounting rail 18 is inserted between each two of the mounting brackets 16 in these battery modules 5 and is positively connected to the two mounting brackets 16, for example, welded to the two mounting brackets 16. Accordingly, two such mounting rails 18 are provided on the top side 14 of each battery module 6.

[0029] By means of these two receiving rails 18 and the receiving brackets 16 with the bracket openings 17, a respective battery module 5 is pushed onto two support rails 7 in the two outer battery module rows 6 adjacent to the outer wall 11 of the commercial vehicle 10.

[0030] After sliding the respective battery module 5 onto the two support rails 7, the support brackets 16 are screwed to the clamping bracket 8 at screw points 9, whereby a fixation of the respective battery module 5 in the vehicle's transverse direction (y-direction) is realized, the support rails 18 are screwed to the two support rails 7 at screw points 12, whereby a fixation of the respective battery module 5 in the vehicle's longitudinal direction (x-direction) is realized.

[0031] According to the Fig. 3, during the assembly of the battery modules 5 of the inner battery module row 6 located on the inside of the commercial vehicle 10, these battery modules 5 are initially pushed on without the support rails 18 between the two support brackets 16. By means of specially shaped support brackets 16, these battery modules 5 are pushed onto two support rails 7 without the support rails 18 (see arrow direction in the Fig.3), then the mounting rails 18 are inserted between the mounting brackets 16.

[0032] The fastening of the support rails 18 to the support brackets 18 takes place parallel to the screwing of the support brackets 16 at screw points 9 to the clamping console 8 and the screwing of the support rails 18 at screw points 12 to the two support rails 7. This screwing of the support brackets 16 and the support rails 18 takes place analogously to the assembly of the battery modules 5 in the two outer battery module rows 6.

[0033] All battery modules 5 of the traction battery of the commercial vehicle 10 mounted in this way can also be removed again by loosening the corresponding screw connections. This allows for easy disassembly of the battery modules 5 of the traction battery of the commercial vehicle 10 in all commercial vehicles 10. List of reference symbols 1 device 2 Supporting structure 3 Longitudinal beams / supporting elements of the supporting structure 4 feed-through openings in the longitudinal member 5 battery modules 6 battery module rows 7 support rail 8 clamping bracket 9 screw point 10 commercial vehicles 11 Side paneling / exterior wall of commercial vehicle 12 screw points 13 Outer surface of battery module 14 Top of battery module 15 Bottom of battery module 16 mounting brackets 17 bracket opening 18 Mounting rail 19 Outside of the outer battery modules 20 Cross support battery module rows (y) 21 Outside of the battery modules of a battery module row 22 Longitudinal support battery modules (x) Vehicle longitudinal direction x-direction Vehicle transverse direction y-direction Vehicle vertical direction z-direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2016 113 759 A1

[0002] DE 10 2020 004 026 A1

[0003] DE 10 2017 007 490 A1

[0004]

Claims

[1] Device (1) for receiving the traction battery of a commercial vehicle (10), wherein several battery modules (5) of the traction battery are arranged linearly one behind the other in at least one battery module row (6) in the vehicle's longitudinal direction (x-direction), characterized by , that at least one support element (3) of the support structure (2) of the commercial vehicle (10) extending in the vehicle longitudinal direction (x-direction) has spaced-apart through-openings (4) for the respective passage of a continuous support rail (7) arranged in the vehicle transverse direction (y-direction) between the two outer walls (11) of the commercial vehicle (10), that a clamping bracket (8) is applied to the support rail (7) on both sides of a respective lead-through opening (4) in the support element (3) of the support structure (2), that a respective battery module (3) has two receiving brackets (16) on two opposite outer surfaces (13) each, which protrude beyond the upper side (14) of the battery module (5) and between which a receiving rail (18) is provided, that a respective battery module (5) can be pushed onto two support rails (7) by means of the support brackets (16), and that after sliding a respective battery module (5) onto two support rails (7) in each case, the two receiving rails (18) of the battery module (5) can be positively connected to the two support rails (7) and the receiving brackets (16) of the battery module (5) can be positively connected to a clamping bracket (8) in each case. [2] Device (1) according to claim 1, characterized bythat after sliding a respective battery module (5) onto two support rails (7) each, the receiving brackets (16) of the battery module (5) can be positively connected to a clamping bracket (8) in the transverse direction of the vehicle (y-direction) by means of fastening screws and the two receiving rails (18) of the battery module (5) can each be positively connected to a support rail (7) in the longitudinal direction of the vehicle (x-direction) by means of fastening screws. [3] Device (1) according to claim 1 or 2, characterized by that the support rails (7) are designed as a double tube profile. [4] Device (1) according to one of claims 1 to 3, characterized by that two longitudinal beams running in the longitudinal direction (x-direction) of the commercial vehicle (10) are provided as support elements (3) of the support structure (2) of the commercial vehicle (10). [5] Device (1) according to one of claims 1 to 4, characterized bythat a transverse support (20) arranged in the transverse direction (y direction) of the vehicle is provided on the underside (15) of the outer side (19) of the two outer battery modules (5) of a battery module row (6), said support being located in the longitudinal direction (x direction) of the commercial vehicle (10). [6] Device (1) according to one of claims 1 to 5, characterized by that a longitudinal support (22) arranged in the vehicle's longitudinal direction (x-direction) is provided on the underside (15) of the outer side (21) of the battery modules (5) of a battery module row (6), said support being located in the vehicle's longitudinal direction (x-direction) of the commercial vehicle (10). [7] Device (1) according to one of claims 1 to 6, characterized by that the battery modules (5) of the traction battery of the commercial vehicle (10) are arranged in several rows of battery modules (6) oriented in the vehicle's longitudinal direction (x-direction) and arranged next to one another in the vehicle's transverse direction (y-direction). [8] Device (1) according to claim 7, characterized by that on the underside (15) of the outer side (19) of the two outer battery modules (5) of a battery module row (6), which lies in the vehicle longitudinal direction (x-direction) of the commercial vehicle (10), a transverse support (20) connecting the battery modules (5) of the battery module rows (6) is provided in the vehicle transverse direction (y-direction). [9] Device (1) according to one of claims 7 or 8, characterized by that in a row of battery modules (6) adjacent to the outer wall (11) of the commercial vehicle (10), a respective battery module (3) with the receiving brackets (16) and the receiving rails (18) firmly connected to them can be pushed onto two support rails (7) in the transverse direction of the vehicle (y-direction). [10] Device (1) according to one of claims 7 or 8, characterized bythat in a battery module row (6) not adjacent to the outer wall (11) of the commercial vehicle (10), a respective battery module (3) with the receiving brackets (16) can be pushed onto two support rails (7) in each case and the two receiving rails (18) can then be inserted between the receiving brackets (16) of the battery module (3) and connected to them.

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