Chassis device and vehicle

Abstract

The utility model discloses a chassis device and a vehicle, and relates to the chassis technical field, the chassis device bottom comprises a frame and a battery installation structure, the frame comprises two longitudinal beams which are distributed at intervals along the left-right direction, each longitudinal beam comprises a first beam section and a second beam section which are connected with each other, and the second beam section is used for installing a suspension system and / or a cab; the battery installation structure comprises an installation box and at least two reinforcing supports, the installation box is provided with an installation cavity used for storing battery units, at least the first beam sections serve as at least part of box side walls of the installation box, and the at least two reinforcing supports are arranged on the two first beam sections respectively. According to the technical scheme, the structure of the chassis device can be simplified, and the weight of the chassis device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle chassis, and particularly relates to a chassis device and a vehicle. Background Art

[0002] The chassis device of a new energy commercial vehicle generally includes a vehicle frame and a battery pack. Among them, the battery pack usually includes an installation box and battery units installed in the installation box. After the battery units and the installation box are assembled into an integral module on a sub-assembly line, the integral module (i.e., the battery pack) is fixed to the vehicle frame through a connecting bracket. This kind of chassis device not only has a complex structure, but also causes the problem of a relatively large vehicle weight. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a chassis device and a vehicle, aiming to simplify the structure of the chassis device and reduce the weight of the chassis device.

[0004] To achieve the above object, the chassis device proposed by the utility model includes a vehicle frame and a battery installation structure. The vehicle frame includes two longitudinal beams spaced apart in the left-right direction. The longitudinal beam includes a first beam segment and a second beam segment connected to each other. The second beam segment is used to install a suspension system and / or a cab. The battery installation structure includes an installation box and at least two reinforcing brackets. The installation box has an installation cavity for storing battery units. At least the first beam segment serves as at least part of the box side wall of the installation box, and at least two of the reinforcing brackets are respectively arranged on the two first beam segments.

[0005] In one embodiment, the battery installation structure further includes an installation bracket. The installation bracket connects two of the reinforcing brackets located on the left and right sides and is used for installing and fixing the battery units.

[0006] In one embodiment, the installation bracket includes a first bracket and two second brackets. The two second brackets are respectively arranged at the left and right ends of the first bracket and are connected to the reinforcing brackets. The first bracket is detachably installed on the second bracket and is provided with a plurality of installation positions for installing the battery units.

[0007] In one embodiment, the first bracket extends in the left-right direction.

[0008] In one embodiment, the first bracket is provided with installation holes, and the battery units are locked to the installation holes by bolts. At least one of the installation positions is correspondingly provided with an installation hole.

[0009] In one embodiment, the second bracket includes a buckle portion and a support plate portion provided on the buckle portion. The buckle portion is connected to the reinforcing bracket, and the first bracket is installed on the upper surface of the support plate portion.

[0010] In one embodiment, the pallet part is provided with a mounting groove with its notch facing upward, and the end of the first bracket can be inserted into the mounting groove from top to bottom.

[0011] In one embodiment, the battery mounting structure further includes a first fastener which passes through the first bracket from top to bottom and connects to the bottom wall of the mounting groove.

[0012] In one embodiment, the second bracket further includes a reinforcing plate which is connected between the wall of the mounting groove and the buckle part.

[0013] In one embodiment, the reinforcing bracket extends in the vertical direction. At least two mounting brackets are mounted on the same reinforcing bracket in the vertical direction, and one battery unit is correspondingly mounted on one mounting bracket. The distance between the left and right second brackets at the upper part is greater than the distance between the left and right second brackets at the lower part; the length of the upper first bracket is greater than the length of the lower first bracket.

[0014] In one embodiment, the buckle part and the pallet part are separately provided.

[0015] In one embodiment, the pallet part is welded and fixed to the buckle part.

[0016] In one embodiment, the buckle part is welded and fixed to the reinforcing bracket.

[0017] In one embodiment, the buckle part includes a first plate segment and two opposite second plate segments. The two second plate segments are respectively arranged on the opposite sides of the first plate segment and are connected to the reinforcing bracket. The pallet part is arranged on the plate surface of the first plate segment away from the reinforcing bracket.

[0018] In one embodiment, the reinforcing bracket extends in the vertical direction and includes a third plate segment and two opposite fourth plate segments. The two fourth plate segments are respectively connected to the front and rear sides of the third plate segment. The third plate segment is arranged inside the first beam segment through the first beam segment. The two second plate segments are distributed at intervals in the vertical direction and are connected to the third plate segment.

[0019] In one embodiment, the reinforcing bracket further includes two fifth plate segments respectively arranged on the front and rear sides of the third plate segment. The fifth plate segment is connected to the side of the fourth plate segment away from the third plate segment and is connected to the first beam segment.

[0020] In one embodiment, the side edge of the second plate segment away from the first plate segment is connected to the fifth plate segment and is provided with a positioning notch. The edge of the positioning notch is connected to the third plate segment and the fourth plate segment.

[0021] In one embodiment, the reinforcing bracket extends in the up-and-down direction, and at least three of the reinforcing brackets are spaced apart in the front-and-rear direction on the first beam section, and at least three corresponding mounting brackets are provided to divide the mounting cavity into at least two first cavities distributed in the front-and-rear direction.

[0022] In one embodiment, the mounting bracket includes a first bracket and a second bracket. The first bracket is for mounting and fixing the battery unit, and the end of the first bracket is mounted on the reinforcing bracket through the second bracket. The first brackets of the two middle mounting brackets share one second bracket.

[0023] In one embodiment, at least two of the mounting brackets are mounted on the same reinforcing bracket in the up-and-down direction to divide the first cavity into at least two second cavities, and at least one of the battery units is correspondingly mounted in the second cavity.

[0024] In one embodiment, the battery mounting structure further includes a second fastener, and two adjacent mounting brackets in the up-and-down direction are connected by the second fastener.

[0025] In one embodiment, the vehicle frame further includes a third fastener. The first beam section and the second beam section are separately provided and are connected by the third fastener.

[0026] In one embodiment, the first beam section includes a first main board section that serves as the box side wall of the mounting box. The reinforcing bracket is provided on the first main board section. The second beam section includes a second main board section that connects the first main board section. The height of the first main board section is greater than the height of the second main board section.

[0027] In one embodiment, the vehicle frame further includes a cross beam connecting two adjacent longitudinal beams. The cross beam serves as part of the structure of the mounting box.

[0028] In one embodiment, the reinforcing bracket is welded and fixed to the first beam section.

[0029] In one embodiment, the mounting box further includes a box bottom plate connected to the lower side of the first beam section. The battery mounting structure further includes a bottom reinforcing beam mounted on the lower side of the box bottom plate.

[0030] The present utility model also proposes a vehicle, including the foregoing chassis device.

[0031] The technical solution of the present utility model is to use at least part of the longitudinal beam as part of the structure of the battery installation box, that is, to integrate the installation box with the vehicle frame into an integrated structure. A part of the longitudinal beam (i.e., the first beam section) serves as at least part of the box side wall of the installation box, so that the installation box does not need to be made into a complete box-like structure, thereby saving part of the box body structure of the original installation box, simplifying the structure of the installation box and the chassis device, and reducing the weight of the chassis device. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0033] Figure 1 It is a partial structural schematic diagram of an embodiment of the chassis device provided by the present utility model;

[0034] Figure 2 For Figure 1 Another partial structural schematic diagram of the shown embodiment;

[0035] Figure 3 For Figure 1 Another partial structural schematic diagram of the shown embodiment.

[0036] Explanation of the Reference Numerals in the Drawings:

[0037] 10, vehicle frame; 11, longitudinal beam; 111, first beam section; 112, second beam section; 113, first main board section; 114, second main board section; 12, cross beam; 121, front cross beam; 122, rear cross beam;

[0038] 20, battery installation structure; 21, installation box; 211, installation cavity; 212, box side wall; 213, box bottom plate; 215, rear end plate; 22, strengthening bracket; 221, third plate section; 222, fourth plate section; 223, fifth plate section; 23, installation bracket; 231, first bracket; 232, second bracket; 233, installation hole; 234, buckling plate part; 234a, first plate section; 234b, second plate section; 234c, positioning notch; 235, supporting plate part; 236, installation groove; 237, first strengthening plate; 238, second strengthening plate; 241, first fastener; 242, second fastener; 243, third fastener; 25, bottom strengthening beam.

[0039] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the drawings. Detailed Embodiment

[0040] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] For a new energy commercial vehicle, such as a light truck, its chassis device usually includes a frame and a battery pack. Among them, the battery pack usually includes an installation box and battery units installed in the installation box. After the battery units and the installation box are assembled into an integral module on the subassembly line, the battery pack is fixed on the frame through a connecting bracket. Such a chassis device not only has a complex structure but also causes the problem of a relatively large vehicle weight.

[0044] In view of this, the present utility model proposes a chassis device, and the solution of this chassis device can simplify the structure of the chassis device and reduce the weight of the chassis device.

[0045] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the chassis device includes a frame 10 and a battery installation structure 20. The frame 10 includes longitudinal beams 11. The battery installation structure 20 includes an installation box 21. The installation box 21 has an installation cavity 211 for storing the battery units of the vehicle. At least part of the longitudinal beam 11 serves as part of the structure of the installation box 21.

[0046] In the technical solution of the present utility model, at least part of the longitudinal beam 11 is used as part of the structure of the battery installation box 21, that is, by integrating the installation box 21 with the vehicle frame 10 into an integrated structure, at least part of the box body structure of the original installation box 21 can be saved, thereby simplifying the structure of the chassis device and reducing the weight of the chassis device.

[0047] Please refer to Figure 1 , optionally, the vehicle frame 10 further includes a cross beam 12 connecting two adjacent longitudinal beams 11, and the cross beam 12 is used as part of the structure of the installation box 21. In this way, part of the box body structure of the original installation box 21 can be further saved, thereby simplifying the structure of the chassis device and reducing the weight of the chassis device.

[0048] Furthermore, the vehicle frame 10 includes two longitudinal beams 11 spaced apart in the left-right direction. The longitudinal beam 11 includes a connected first beam section 111 and a second beam section 112. At least the first beam section 111 serves as at least part of the box side wall 212 of the installation box 21, and the second beam section 112 is used to install the suspension system and / or the cab. In this way, a part of the longitudinal beam 11 (i.e., the first beam section 111) serves as at least part of the box side wall 212 of the installation box 21, so that the installation box 21 does not need to be made into a complete box-like structure, thereby simplifying the structure of the installation box 21 and the chassis device and reducing the weight of the chassis device.

[0049] Please refer to Figure 1 , furthermore, there are two second beam sections 112. One second beam section 112 is connected to the front end of the first beam section 111, and the other second beam section 112 is connected to the rear end of the first beam section 111. That is, the longitudinal beam 11 in this embodiment is configured as a three-section structure, and the first beam section 111 in the middle serves as part of the structure of the installation box 21, so that the installation box 21 can make full use of the installation space in the middle of the longitudinal beam 11, so as to enable the installation box 21 to have a larger volume, and thus more battery units can be arranged. Of course, in other embodiments, the first beam section 111 may also be located at one end of the longitudinal beam 11, such as the front end or the rear end.

[0050] Optionally, the battery installation structure 20 further includes at least two reinforcing brackets 22, and the at least two reinforcing brackets 22 are respectively arranged on the two first beam sections 111. In this way, the structure of the first beam section 111 is strengthened through the reinforcing brackets 22, which is beneficial to improving the installation stability and reliability of the battery unit. Of course, in other embodiments, the reinforcing brackets 22 may not be provided.

[0051] Please refer to Figure 1, Optionally, the battery installation structure 20 further includes a mounting bracket 23. The mounting bracket 23 connects two reinforcing brackets 22 located on the left and right sides and is used for installing and fixing the battery unit. In this way, the reinforcing bracket 22 serves as a direct supporting structure for the mounting bracket 23, so that the weight of the battery unit is first absorbed by the mounting bracket 23 and the reinforcing bracket 22 and then transmitted to the first beam segment 111, which can improve the installation stability and reliability of the battery unit in multiple aspects. Of course, in other embodiments, the two ends of the mounting bracket 23 can be directly connected to the first beam segment 111 while the reinforcing bracket 22 is provided.

[0052] Without loss of generality, the battery unit can be either a single battery cell or a battery module. The present utility model will be explained by taking the battery module as an example. Optionally, the battery module includes a module frame and a plurality of battery cells arranged on the module frame. The module frame is attached to the mounting bracket 23 by bolts. In this way, the structure is simple and easy to implement. Of course, in other embodiments, the module frame can also be installed and fixed on the mounting bracket 23 by riveting, bonding or welding.

[0053] Please refer to Figure 2 and Figure 3 , Further, the mounting bracket 23 includes a first bracket 231 and two second brackets 232. The two second brackets 232 are respectively arranged at the left and right ends of the first bracket 231 and are connected to the reinforcing bracket 22. The first bracket 231 is detachably installed on the second bracket 232 and is provided with a plurality of installation positions for installing the battery unit. In this way, by setting the first bracket 231 to be detachably installed on the second bracket 232, it is convenient for the installation of the mounting bracket 23 on the chassis device and also convenient for the later disassembly, maintenance and replacement of the battery unit. Specifically, when the battery unit needs to be disassembled, the first bracket 231 can be directly detached from the second bracket 232 first, so that multiple battery units located on the same first bracket 231 can be removed together and these parts are allowed to be carried out of the installation box 21 and moved to a more open area, thus making it more convenient to disassemble the battery unit from the first bracket 231. Similarly, when installing the battery unit, multiple battery units can be first installed on the same first bracket 231 to form an assembly module, and then the assembly module is loaded into the installation box 21, thereby improving the assembly convenience of the battery unit and the mounting bracket 23.

[0054] Of course, in other embodiments, the first bracket 231 and the second bracket 232 can also be relatively fixedly installed by welding or riveting, etc., or the first bracket 231 is only provided with one installation position, and one installation position corresponds to installing one battery unit.

[0055] Please refer to Figure 1, Further, the first bracket 231 extends in the left - right direction. In this way, the first bracket 231 extending in the left - right direction can make the arrangement of the battery cells in the installation cavity 211 more orderly and regular, which is conducive to arranging more battery cells to increase the battery capacity of the battery pack. Of course, in other embodiments, the first bracket 231 may also be inclined and extend in the left - right direction. For example, the length direction of the first bracket 231 forms an angle of 30° to 60° with the length direction of the longitudinal beam 11.

[0056] Please refer to Figure 2 and Figure 3 , Further, the first bracket 231 is provided with mounting holes 233. The battery cells are attached to the mounting holes 233 by bolts, and at least one mounting hole 233 is provided corresponding to the mounting position. That is, one mounting position can correspond to one mounting hole 233 or two or more mounting holes 233. That is, a battery cell can be attached and mounted to the mounting bracket 23 through one or more mounting holes 233. In this way, the structure is simple and easy to implement. Of course, in other embodiments, the first bracket 231 may be provided with studs, and the battery cells are attached to the studs by nuts.

[0057] Please refer to Figure 2 and Figure 3 , Further, the second bracket 232 includes a buckle portion 234 and a support plate portion 235 provided on the buckle portion 234. The buckle portion 234 is connected to the reinforcement bracket 22, and the first bracket 231 is installed on the upper surface of the support plate portion 235. In this way, the first bracket 231 is installed on the upper side of the support plate portion 235, which facilitates its installation and disassembly. Of course, in other embodiments, the first bracket 231 may also be installed on the side surface or the lower surface of the support plate portion 235.

[0058] Further, the support plate portion 235 is provided with a mounting groove 236. The opening of the mounting groove 236 faces upward, and the end of the first bracket 231 can be inserted into the mounting groove 236 from top to bottom. In this way, the bottom wall of the mounting groove 236 can support the first bracket 231, and the side wall of the groove can restrict the displacement of the first bracket 231 in the front - rear direction, thereby improving the installation stability of the first bracket 231.

[0059] Please refer to Figure 2 and Figure 3 , Optionally, the battery mounting structure 20 further includes a first fastener 241. The first fastener 241 passes through the first bracket 231 from top to bottom and connects to the bottom wall of the mounting groove 236. In this way, the structure is simple and it is convenient for the installation and disassembly of the first fastener 241. Secondly, the first fastener 241 is directly attached to the mounting groove 236, and the structure is more compact. Of course, in other embodiments, the first fastener 241 may also pass through the two side walls of the mounting groove 236 and the first bracket 231 horizontally.

[0060] Please refer to Figure 3 , optionally, the second bracket 232 further includes a reinforcing plate connected between the groove wall of the mounting groove 236 and the buckle portion 234. In this way, the structural strength of the mounting groove 236 can be improved, thereby enhancing the mounting reliability and stability of the first bracket 231. Specifically and optionally, the reinforcing plate includes a first reinforcing plate 237 and a second reinforcing plate 238. The first reinforcing plate 237 is connected between the bottom wall of the mounting groove 236 and the buckle portion 234, and the second reinforcing plate 238 is connected between the side wall of the mounting groove 236 and the buckle portion 234. Of course, in other embodiments, only the first reinforcing plate 237 or the second reinforcing plate 238 may be provided, or no reinforcing plate may be provided.

[0061] Furthermore, the buckle portion 234 and the supporting plate portion 235 are separately provided. In this way, it is beneficial to reduce the manufacturing process difficulty of the second bracket 232, thereby reducing the manufacturing cost of the second bracket 232. Of course, in other embodiments, the supporting plate portion 235 and the buckle portion 234 may be integrally formed, for example, integrally formed by a stamping process.

[0062] Furthermore, the supporting plate portion 235 is fixedly welded to the buckle portion 234. In this way, the connection strength between the supporting plate portion 235 and the buckle portion 234 can be improved, and the assembly process of the supporting plate portion 235 can be simplified. Of course, in other embodiments, the supporting plate portion 235 may also be mounted on the buckle portion 234 by screwing or riveting.

[0063] Furthermore, the buckle portion 234 is fixedly welded to the reinforcing bracket 22. In this way, the connection strength between the buckle portion 234 and the reinforcing bracket 22 can be improved, and the assembly process of the buckle portion 234 can be simplified. Of course, in other embodiments, the buckle portion 234 may also be mounted on the reinforcing bracket 22 by screwing or riveting.

[0064] Furthermore, the reinforcing bracket 22 is fixedly welded to the first beam segment 111. In this way, the connection strength between the reinforcing bracket 22 and the first beam segment 111 can be improved, and the assembly process of the reinforcing bracket 22 can be simplified. Of course, in other embodiments, the reinforcing bracket 22 may also be mounted on the first beam segment 111 by screwing or riveting.

[0065] Considering that there is a relatively large operating space when the reinforcing bracket 22 is welded to the first beam segment 111, optionally, the reinforcing bracket 22 is fixedly welded to the first beam segment 111 by spot welding. It can be understood that since the operating space for welding the buckle portion 234 and the supporting plate portion 235 is limited, therefore, both the buckle portion 234 and the supporting plate portion 235 are welded and fixed by CO2 shielded arc welding. Of course, in other embodiments, the buckle portion 234, the supporting plate portion 235 and the reinforcing bracket 22 may all be welded by spot welding.

[0066] Please refer to Figure 2 and Figure 3 , further, the reinforcing bracket 22 extends in the vertical direction. At least two mounting brackets 23 are mounted on the same reinforcing bracket 22 in the vertical direction, and one battery unit is correspondingly mounted on one mounting bracket 23. The distance between the left and right second brackets 232 in the upper part is greater than the distance between the left and right second brackets 232 in the lower part; the length of the upper first bracket 231 is greater than the length of the lower first bracket 231.

[0067] For Figure 2 and Figure 3 The illustrated embodiments are used for explanation. Specifically, in this embodiment, two mounting brackets 23 are mounted on the same reinforcing bracket 22 in the vertical direction. The two mounting brackets 23 distributed in sequence from top to bottom are defined as the upper mounting bracket 23 and the lower mounting bracket 23. Among them, the length of the upper first bracket 231 is greater than the length of the lower first bracket 231, and the distance between the left and right second brackets 232 in the upper part is greater than the distance between the left and right second brackets 232 in the lower part. That is, the inner end surface of the mounting groove 236 of the lower second bracket 232 extends beyond the inner end surface of the mounting groove 236 of the upper second bracket 232 in the direction from outside to inside.

[0068] In this way, when installing the first bracket 231 into the installation cavity 211, first install the lower first bracket 231 and then install the upper first bracket 231. Specifically, the lower first bracket 231 can directly pass through the upper space (i.e., the interval between the left and right second brackets 232 in the upper part) from top to bottom and enter the lower space, and then be installed into the mounting groove 236 of the lower second bracket 232 and be supported and locked by the bottom wall of the mounting groove 236. Then, the upper first bracket 231 is installed into the mounting groove 236 of the upper second bracket 232 from top to bottom and is supported and locked by the bottom wall of the mounting groove 236. It can be seen that the installation operation of the upper and lower first brackets 231 is not interfered by the second brackets 232 of other layers, and the first bracket 231 can be installed into the corresponding mounting groove 236 from top to bottom, thereby improving the installation convenience of the first bracket 231. Similarly, the disassembly operation of the upper and lower first brackets 231 is not interfered by the second brackets 232 of other layers, thereby improving the disassembly convenience of the first bracket 231.

[0069] Please refer to Figure 2 and Figure 3, Further, the buckle portion 234 includes a first plate segment 234a and two opposite second plate segments 234b. The two second plate segments 234b are respectively arranged on opposite sides of the first plate segment 234a and are connected to the reinforcing bracket 22. The support plate portion 235 is arranged on the plate surface of the first plate segment 234a away from the reinforcing bracket 22. In this way, the buckle portion 234 has better structural strength, thereby being able to improve the installation reliability of the mounting bracket 23 and the battery unit. Of course, in other embodiments, the buckle portion 234 may also adopt other structural forms, and the present application does not make specific limitations thereto.

[0070] Please refer to Figure 2 and Figure 3 , Further, the reinforcing bracket 22 extends in the up and down direction and includes a third plate segment 221 and two opposite fourth plate segments 222. The two fourth plate segments 222 are respectively connected to the front and rear sides of the third plate segment 221. The third plate segment 221 is arranged inside the first beam segment 111 through the first beam segment 111. The two second plate segments 234b are distributed at intervals in the up and down direction and are connected to the third plate segment 221. That is, the buckle portion 234 extends in the front and rear direction and intersects with the reinforcing bracket 22. In this way, the connection strength between the reinforcing bracket 22 and the buckle portion 234 can be improved, and the structural strength of the buckle portion 234 can be improved, thereby improving the installation reliability of the mounting bracket 23 and the battery unit. Of course, in other embodiments, the reinforcing bracket 22 may also adopt other structural forms, or the reinforcing bracket 22 extends in the front and rear direction, and the present application does not make specific limitations thereto.

[0071] Further, the reinforcing bracket 22 further includes two fifth plate segments 223 respectively arranged on the front and rear sides of the third plate segment 221. The fifth plate segment 223 is connected to the side of the fourth plate segment 222 away from the third plate segment 221 and is connected to the first beam segment 111. In this way, the connection strength between the reinforcing bracket 22 and the first beam segment 111 can be further improved by the added fifth plate segment 223, and the structural strength of the first beam segment 111 can be improved. In an embodiment where the reinforcing bracket 22 is welded and fixed to the first beam segment 111, optionally, the fifth plate segment 223 is welded and fixed to the first beam segment 111. Of course, in other embodiments, the fifth plate segment 223 may not be provided, and the side edge of the fourth plate segment 222 is directly welded and fixed to the first beam segment 111.

[0072] Please refer to Figure 2 and Figure 3, Further, the side edge of the second plate segment 234b away from the first plate segment 234a is connected to the fifth plate segment 223 and is provided with a positioning notch 234c. The edge of the positioning notch 234c is connected to the third plate segment 221 and the fourth plate segment 222. That is, a part of the structure of the reinforcing bracket 22 is embedded in the positioning notch 234c. In this way, the edge of the positioning notch 234c can play a positioning role to prevent the position deviation of the tray part 235 on the buckling plate part 234. And, in the embodiment where the buckling plate part 234 is welded and fixed to the reinforcing bracket 22, the edge of the positioning notch 234c can be used as a welding area and form a weld seam, so as to increase the length of the weld seam and be beneficial to improving the connection strength between the buckling plate part 234 and the reinforcing bracket 22. Of course, in other embodiments, the positioning notch 234c may not be provided.

[0073] Please refer to Figure 1 , Further, the reinforcing bracket 22 extends in the up and down direction, and at least three reinforcing brackets 22 are distributed at intervals in the front and back direction on the first beam segment 111, and at least three mounting brackets 23 are correspondingly arranged, so as to divide the mounting cavity 211 into at least two first cavities distributed in the front and back direction. In this way, the arrangement of the battery units in the mounting cavity 211 can be made more orderly and regular, which is beneficial to arranging more battery units to increase the battery capacity of the battery pack.

[0074] Please refer to Figure 1 and Figure 2 , Optionally, the mounting bracket 23 includes a first bracket 231 and a second bracket 232. The first bracket 231 is used for installing and fixing the battery unit. The end of the first bracket 231 is installed on the reinforcing bracket 22 through the second bracket 232. The first brackets 231 of the two mounting brackets 23 in the middle share a second bracket 232. In this way, it is beneficial to simplify the structure of the chassis device, reduce its manufacturing cost, and at the same time make the structure more compact, which is beneficial to arranging more battery units. Of course, in other embodiments, each first bracket 231 can also be correspondingly installed on a second bracket 232.

[0075] Please refer to Figure 1 and Figure 2 , Further, at least two mounting brackets 23 are installed on the same reinforcing bracket 22 in the up and down direction to divide the first cavity into at least two second cavities, and at least one battery unit is correspondingly installed in the second cavity. In this way, the mounting cavity 211 is divided into multiple layers of space in both the front and back direction and the up and down direction, so that the arrangement of the battery units in the mounting cavity 211 can be made more orderly and regular, which is beneficial to arranging more battery units to increase the battery capacity of the battery pack.

[0076] To increase the structural strength of the mounting bracket 23, please refer to Figure 2, optionally, the battery mounting structure 20 further includes a second fastener 242, and two adjacent mounting brackets 23 in the up-down direction are connected by the second fastener 242. In this way, a plurality of mounting brackets 23 distributed up and down are connected together by the second fastener 242, so that these mounting brackets 23 are regarded as a whole to enhance the structural strength and mounting reliability of a single mounting bracket 23. Optionally, the second fastener 242 is configured as a long bolt. Of course, in other embodiments, the second fastener 242 may not be provided.

[0077] Please refer to Figure 1 , optionally, the vehicle frame 10 further includes a third fastener 243. The first beam section 111 and the second beam section 112 are separately arranged and connected by the third fastener 243. That is to say, the structure of the longitudinal beam 11 in the length direction is not integrally formed. In this way, the structure and size of the first beam section 111 can be adaptively adjusted according to different vehicle models and battery pack capacity specifications, while the second beam section 112 can still maintain its original structure and size for continued use, which is beneficial to improving the generalization degree of the second beam section 112. Secondly, the installation and fixation of the first beam section 111 and the second beam section 112 are realized through the third fastener 243, which can improve the convenience of disassembly and installation. Optionally, the third fastener 243 includes a bolt. Of course, in other embodiments, at least part of the structures of the first beam section 111 and the second beam section 112 may be integrally formed. For example, the main beam of the longitudinal beam 11 in the length direction is integrally formed, and then a plate-like structure is additionally arranged in some areas in the front-rear direction to form the first beam section 111.

[0078] Please refer to Figure 1 , further, the first beam section 111 includes a first main board section 113 that serves as a box side wall 212 of the installation box 21. The strengthening bracket 22 is arranged on the first main board section 113. The second beam section 112 includes a second main board section 114 that connects the first main board section 113. The height of the first main board section 113 is greater than the height of the second main board section 114. In this way, the height of the first beam section 111 is made larger separately, which is beneficial to increasing the volume of the installation cavity 211, so that more battery cells can be arranged, and at the same time, the material cost and weight of the longitudinal beam 11 will not be significantly increased.

[0079] Please refer to Figure 1 and Figure 2, in an embodiment where the cross beam 12 of the vehicle frame 10 also serves as part of the structure of the mounting box 21, optionally, the cross beam 12 includes a front cross beam 121 and a rear cross beam 122 that are spaced apart in the front-rear direction. The mounting box 21 further includes a front end plate (not shown in the drawings), a rear end plate 215, and a box bottom plate 213. The front end plate is correspondingly mounted on the front cross beam 121, the rear end plate 215 is correspondingly mounted on the rear cross beam 122, and the box bottom plate 213 is connected to the lower sides of the front end plate, the rear end plate 215, and the two first beam segments 111. The front cross beam 121, the front end plate, the rear cross beam 122, the rear end plate 215, the box bottom plate 213, and the two first beam segments 111 jointly enclose an upwardly open mounting cavity 211.

[0080] Optionally, the mounting box 21 further includes a box cover plate (not shown in the drawings), and the box cover plate covers the opening of the mounting cavity 211, that is, covers the upper sides of the two first beam segments 111, the front cross beam 121, and the rear cross beam 122.

[0081] Please refer to Figure 1 , optionally, the battery mounting structure 20 further includes a bottom reinforcing beam 25, and the bottom reinforcing beam 25 is mounted on the lower side of the box bottom plate 213. It should be noted that Figure 1 the structure of the box bottom plate 213 is hidden in [[ ]] to facilitate the display of the bottom reinforcing beam 25. In this way, the structure of the box bottom plate 213 is strengthened through the bottom reinforcing beam 25, thereby improving the structural strength of the mounting box 21. Secondly, the bottom reinforcing beam 25 does not occupy the space of the mounting cavity 211 and can make the inner cavity surface of the mounting cavity 211 flatter. Of course, in other embodiments, the bottom reinforcing beam 25 may not be provided.

[0082] The present utility model also proposes a vehicle, which includes the aforementioned chassis device. The specific structure of the chassis device refers to the above embodiments. Since this vehicle adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0083] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A chassis device, characterized in that: include: A vehicle frame, comprising two longitudinal beams spaced apart in a left-right direction, wherein the longitudinal beams comprise a first beam section and a second beam section connected to each other, wherein the second beam section is used for mounting a suspension system and / or a cab; and A battery installation structure includes an installation box and at least two reinforcement brackets, wherein the installation box has an installation cavity for storing battery units, at least the first beam section serves as at least a part of the box side wall of the installation box, and at least two reinforcement brackets are respectively arranged on two of the first beam sections.

2. The chassis device according to claim 1, characterized in that: The battery installation structure also includes a mounting bracket, which connects the two reinforcing brackets located on the left and right sides and is used for installing and fixing the battery unit.

3. The chassis device according to claim 2, characterized in that: The mounting bracket includes a first bracket and two second brackets, the two second brackets are respectively arranged at the left and right ends of the first bracket and connected to the reinforcing bracket, the first bracket is detachably mounted on the second bracket, and is provided with a plurality of mounting positions for installing the battery unit.

4. The chassis device according to claim 3, characterized in that: The first bracket extends in the left-right direction; And / or, the first bracket is provided with a mounting hole, the battery unit is locked in the mounting hole by bolts, and the mounting position is correspondingly provided with at least one mounting hole.

5. The chassis device according to claim 3, characterized in that: The second bracket includes a gusset plate portion and a support plate portion provided on the gusset plate portion, the gusset plate portion is connected to the reinforcing bracket, and the first bracket is installed on the upper surface of the support plate portion.

6. The chassis device according to claim 5, characterized in that: The support plate portion is provided with a mounting groove, the notch of the mounting groove faces upward, and the end of the first bracket can be installed into the mounting groove from top to bottom.

7. The chassis device according to claim 6, characterized in that: The battery installation structure further includes a first fastener, which passes through the first bracket from top to bottom and is connected to the bottom wall of the installation slot; And / or, the second bracket further includes a reinforcing plate, and the reinforcing plate is connected between the groove wall of the mounting groove and the buckle plate portion.

8. The chassis device according to claim 5, characterized in that: The reinforcing bracket extends in the up-down direction, and at least two mounting brackets are mounted on the same reinforcing bracket in the up-down direction, and one mounting bracket is correspondingly mounted on one battery unit, and the spacing between the upper two left and right second brackets is greater than the spacing between the lower two left and right second brackets; the length of the upper first bracket is greater than the length of the lower first bracket; And / or, the gusset plate portion and the support plate portion are separately provided; And / or, the support plate portion is welded and fixed to the gusset plate portion; And / or, the gusset plate portion is welded and fixed to the reinforcing bracket.

9. The chassis device according to claim 5, characterized in that: The buckle plate portion includes a first plate segment and two opposite second plate segments, the two second plate segments are arranged on opposite sides of the first plate segment and connected to the reinforcing bracket, and the support plate portion is arranged on the plate surface of the first plate segment away from the reinforcing bracket.

10. The chassis device according to claim 9, characterized in that The reinforcing bracket extends in the up-down direction and includes a third plate segment and two fourth plate segments arranged opposite to each other, the two fourth plate segments are respectively connected to the front and rear sides of the third plate segment, the third plate segment is arranged on the inner side of the first beam segment through the first beam segment, and the two second plate segments are spaced apart in the up-down direction and connected to the third plate segment.

11. The chassis device according to claim 10, characterized in that The reinforcing bracket also includes two fifth plate segments respectively arranged on the front and rear sides of the third plate segment. The fifth plate segment is connected to a side of the fourth plate segment away from the third plate segment and connected to the first beam segment.

12. The chassis device according to claim 11, characterized in that The side edge of the second plate segment away from the first plate segment is connected to the fifth plate segment and is provided with a positioning notch, and the edge of the positioning notch connects the third plate segment and the fourth plate segment.

13. The chassis device according to claim 2, characterized in that: The reinforcing bracket extends in the up-down direction, and at least three reinforcing brackets are distributed in the first beam section at intervals in the front-back direction. At least three mounting brackets are arranged correspondingly to divide the mounting cavity into at least two first cavities distributed in the front-back direction.

14. The chassis device according to claim 13, characterized in that The mounting bracket includes a first bracket and a second bracket, the first bracket is used for mounting and fixing the battery unit, an end of the first bracket is mounted on the reinforcing bracket through the second bracket, and the first brackets of the two mounting brackets located in the middle share a second bracket.

15. The chassis device according to claim 13, characterized in that: At least two mounting brackets are installed on the same reinforcing bracket in the up-down direction to separate the first cavity into at least two second cavities, and at least one battery unit is installed in the second cavity.

16. The chassis device according to claim 15, characterized in that The battery mounting structure further includes a second fastener, and two adjacent mounting brackets in the up-down direction are connected via the second fastener.

17. The chassis device according to any one of claims 1 to 16, characterized in that The frame further includes a third fastener, and the first beam section and the second beam section are separately provided and connected by the third fastener; And / or, the first beam section includes a first main board section as a box side wall of the installation box, the reinforcing bracket is arranged on the first main board section, the second beam section includes a second main board section connected to the first main board section, and the height of the first main board section is greater than the height of the second main board section; And / or, the frame further comprises a crossbeam connecting two adjacent longitudinal beams, the crossbeam serving as a partial structure of the mounting box; And / or, the reinforcing bracket is welded and fixed to the first beam section; And / or, the installation box also includes a box bottom plate connected to the lower side of the first beam section, and the battery installation structure also includes a bottom reinforcement beam installed on the lower side of the box bottom plate.

18. A vehicle, characterized in that: Comprising a chassis device as claimed in any one of claims 1 to 17.

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