Vehicle chassis and vehicle

Abstract

The utility model belongs to the technical field of vehicle manufacturing, and particularly relates to a vehicle chassis and a vehicle. The vehicle chassis comprises a front floor assembly, a doorsill beam assembly and a battery pack mounting structure, the threshold beam assemblies are arranged on the two outer sides of the front floor assembly in the Y direction, and the battery pack mounting structures are detachably connected to the two sides of the front floor assembly in the Y direction and located between the threshold beam assemblies on the two sides. The battery pack mounting structures on the same side are detachably connected with the doorsill beam assembly, and the battery pack mounting structures on the two sides are used for being detachably connected with battery packs. The battery pack mounting structure is detachably connected with the front floor assembly and the doorsill beam assembly, so that the battery pack mounting structure of the corresponding specification can be reasonably matched according to the vehicle chassis of the vehicle type so as to adapt to the battery pack of the corresponding specification, the adaptability of the vehicle chassis to the battery packs of different specifications is greatly improved, the development cost is reduced, and the development efficiency is improved. And after-sales maintenance and replacement are facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle manufacturing, and in particular, relates to a vehicle chassis and a vehicle. Background Art

[0002] The battery pack of a new energy vehicle is used to store and release electrical energy to supply the electric drive system of the new energy vehicle. In order to improve the stability and handling of new energy vehicles, the battery pack is usually installed at the bottom of the vehicle to lower the center of gravity of the vehicle. In addition, the bottom installation method can also make full use of the internal space of the vehicle and provide protection in the event of a collision.

[0003] Specifically, the battery pack channel is installed on the door sill beam or the floor longitudinal beam. The size specifications of the door sill beam and the floor longitudinal beam of different models are different. Once the model is determined, it is difficult to adapt battery packs of different sizes and specifications. The re-adaptation cost is high and the cycle is long. Utility Model Content

[0004] The present application provides a vehicle chassis and a vehicle to solve the technical problem that the existing vehicle chassis has poor adaptability to the battery pack.

[0005] According to one aspect of the present application, a vehicle chassis is provided, including a front floor assembly, a door sill beam assembly and a battery pack mounting structure; the door sill beam assembly is arranged on both outer sides of the front floor assembly in the Y direction, and the battery pack mounting structure is detachably connected to both sides of the front floor assembly in the Y direction and is located between the door sill beam assemblies on both sides; the battery pack mounting structure on the same side is detachably connected to the door sill beam assembly, and the battery pack mounting structures on both sides are used for detachably connecting to the battery pack.

[0006] In an optional scheme of the present application, the battery pack mounting structure includes a battery pack mounting longitudinal beam, a first splicing tube and a second splicing tube; the battery pack mounting longitudinal beam is extended along the X-direction, and the first splicing tube and the second splicing tube are arranged on the battery pack mounting longitudinal beam at intervals along the extension direction of the battery pack mounting longitudinal beam; the battery pack mounting longitudinal beam is detachably connected to the front floor assembly and is used to be detachably connected to the battery pack, and the first splicing tube and the second splicing tube are both detachably connected to the door sill beam assembly and are located between the battery pack mounting longitudinal beam and the door sill beam assembly.

[0007] In an optional solution of the present application, the first splicing tube and the second splicing tube both include an installation tube section and a connecting tube section; the two ends of the connecting tube section are respectively connected to the battery pack installation longitudinal beam and the installation tube section, and the installation tube section is detachably connected to the threshold beam assembly.

[0008] In the optional scheme of the present application, it also includes a cabin cross beam joint, which is located on both sides of the front floor assembly in the Y direction, and the cabin cross beam joints on both sides are located on the same side of the front floor assembly in the X direction; the battery pack mounting structure and the cabin cross beam joint are located on the same side of the front floor assembly in the Z direction, and the battery pack mounting longitudinal beam on the same side in the Y direction is detachably connected to the cabin cross beam joint.

[0009] In an optional scheme of the present application, the front floor assembly includes a front floor, a front floor rear cross beam, a first seat front cross beam structure and a second seat front cross beam structure; the front floor rear cross beam is arranged on the side of the front floor away from the cabin cross beam joint in the X direction, the first seat front cross beam structure and the second seat front cross beam structure are located on the side of the front floor opposite to the battery pack mounting structure in the Z direction, and the first seat front cross beam structure and the second seat front cross beam structure are arranged at intervals in the X direction; the battery pack mounting longitudinal beam is detachably connected to the first seat front cross beam structure and the second seat front cross beam structure, and the two ends of the battery pack mounting longitudinal beam are respectively detachably connected to the cabin cross beam joint and the front floor rear cross beam.

[0010] In an optional solution of the present application, the first splicing tube is aligned with the first seat front cross beam structure in the Z direction; the second splicing tube is aligned with the second seat front cross beam structure in the Z direction.

[0011] In an optional scheme of the present application, the first seat front cross beam structure and the second seat front cross beam structure both include a seat front cross beam and a battery pack longitudinal beam mounting bracket; the battery pack longitudinal beam mounting bracket is connected to the seat front cross beam and is on both sides of the seat front cross beam in the Y direction, and the battery pack longitudinal beam mounting brackets on both sides are located between the front floor and the seat front cross beam in the Z direction and are respectively detachably connected to the battery pack mounting longitudinal beams on both sides.

[0012] In an optional solution of the present application, the battery pack mounting structure is also provided with a plurality of mounting points; the mounting pipe section has at least one mounting point for detachable connection with the threshold beam assembly; the battery pack mounting longitudinal beam has a plurality of mounting points arranged at intervals along the extension direction of the battery pack mounting longitudinal beam for detachable connection with the front floor assembly, the cabin cross beam joint and the battery pack.

[0013] In an optional solution of the present application, the sill beam assembly includes a sill inner panel front section and a sill inner panel rear section, and the sill inner panel front section and the sill inner panel rear section are spliced ​​along the X direction.

[0014] According to another aspect of the present application, a vehicle is provided, comprising a battery pack and the above-mentioned vehicle chassis; the battery pack is detachably connected to the battery pack mounting structure.

[0015] In summary, the vehicle chassis and vehicle provided by the present application have at least the following beneficial effects:

[0016] The vehicle chassis is additionally provided with a battery pack mounting structure for installing the battery pack, and the battery pack mounting structure is detachably connected to the front floor assembly and the door sill beam assembly. In this way, the battery pack mounting structure of corresponding specifications can be reasonably matched according to the vehicle chassis of the vehicle model to adapt to the battery pack of corresponding specifications. This greatly improves the adaptability of the vehicle chassis to battery packs of different specifications, reduces development costs, and is more conducive to after-sales repair and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A partial exploded view of a vehicle chassis equipped with a battery pack according to one embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the vehicle chassis in another perspective;

[0020] Figure 3 for Figure 2 A partial schematic diagram of the vehicle chassis at another viewing angle;

[0021] Figure 4 for Figure 2 The vehicle chassis in the diagram hides the front floor;

[0022] Figure 5 for Figure 2 A partial enlarged view of the vehicle chassis at another viewing angle;

[0023] Figure 6 for Figure 2 Sectional view at AA in the figure;

[0024] Figure 7 A schematic diagram of the force transmission path when the vehicle chassis is subjected to a frontal impact in this embodiment is shown;

[0025] Figure 8 A schematic diagram of the force transmission path when the vehicle chassis in this embodiment is subjected to a side impact is shown.

[0026] The reference numerals are as follows:

[0027] 100. Vehicle chassis;

[0028] 200, battery pack;

[0029] 110. Cabin beam joint;

[0030] 120, front floor assembly; 121, front floor; 122, rear cross beam of front floor; 123, front cross beam structure of first seat; 124, front cross beam structure of second seat; 125, rear cross beam joint of front floor; 1201, front cross beam of seat; 1202, mounting bracket of battery pack longitudinal beam; 1203, mounting bracket of front seat; 1204, front cross beam joint of seat;

[0031] 130. Door sill beam assembly; 131. Front section of door sill inner panel; 132. Rear section of door sill inner panel;

[0032] 300, battery pack installation structure; 301, installation pipe section; 302, connection pipe section; 310, battery pack installation longitudinal beam; 320, first splicing pipe; 330, second splicing pipe;

[0033] P, installation point; P1, first installation point; P2, second installation point; P3, third installation point; P4, fourth installation point; P5, fifth installation point; P6, sixth installation point; P7, seventh installation point; P8, eighth installation point; P9, ninth installation point; P10, tenth installation point. DETAILED DESCRIPTION

[0034] In the description of this application, if there is a feature defined as "first" or "second" for descriptive purposes only, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If the description of "plurality" appears, the general meaning is to include at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and so on should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0037] It should be noted that the X, Y and Z directions mentioned in this application all refer to the coordinate system constructed by the vehicle, wherein the X and Y directions are perpendicular to each other and define the horizontal direction, and the Z direction defines the vertical direction perpendicular to the horizontal direction. Here, the X direction is both the front-to-back direction and the longitudinal direction; the Y direction is both the left-right direction and the lateral direction; and the Z direction is both the up-down direction and the vertical direction.

[0038] Figure 1 This is a partial exploded view of a vehicle chassis 100 equipped with a battery pack 200 according to one embodiment of the present application. Figure 1 The vehicle chassis 100 includes a front floor assembly 120 , a door sill beam assembly 130 and a battery pack mounting structure 300 .

[0039] The threshold beam assembly 130 is disposed on both outer sides of the front floor assembly 120 in the Y direction, and the battery pack mounting structure 300 is detachably connected to both sides of the front floor assembly 120 in the Y direction and is located between the threshold beam assemblies 130 on both sides. The battery pack mounting structure 300 on the same side is detachably connected to the threshold beam assembly 130, and the battery pack mounting structures 300 on both sides are used to be detachably connected to the battery pack 200.

[0040] In this embodiment, a threshold beam assembly 130 is fixedly installed on both outer sides of the front floor assembly 120 in the Y direction, and a battery pack mounting structure 300 is arranged on both sides of the front floor assembly 120 in the Y direction. The battery pack mounting structure 300 on both sides of the Y direction is located between the threshold beam assemblies 130 on both outer sides of the Y direction, thereby forming the main structural functional part of the vehicle chassis 100 for installing the battery pack 200.

[0041] The vehicle chassis 100 is additionally provided with a battery pack mounting structure 300 for mounting the battery pack 200, and the battery pack mounting structure 300 is detachably connected to the front floor assembly 120 and the threshold beam assembly 130. In this way, the battery pack mounting structure 300 of corresponding specifications can be reasonably matched according to the vehicle chassis 100 of the vehicle model to adapt to the battery pack 200 of corresponding specifications. This greatly improves the adaptability of the vehicle chassis 100 to battery packs 200 of different specifications, reduces development costs, and is more conducive to after-sales repair and replacement.

[0042] Figure 2 for Figure 1 A schematic diagram of the vehicle chassis 100 in another perspective. Figure 2 The battery pack installation structure 300 includes a battery pack installation longitudinal beam 310 , a first splicing tube 320 and a second splicing tube 330 .

[0043] The battery pack installation longitudinal beam 310 is extended along the X direction, and the first splicing tube 320 and the second splicing tube 330 are arranged at intervals on the battery pack installation longitudinal beam 310 along the extension direction of the battery pack installation longitudinal beam 310 .

[0044] The battery pack mounting longitudinal beam 310 is detachably connected to the front floor assembly 120 and is used for detachably connecting to the battery pack 200 . The first splicing tube 320 and the second splicing tube 330 are both detachably connected to the threshold beam assembly 130 and are located between the battery pack mounting longitudinal beam 310 and the threshold beam assembly 130 .

[0045] In this embodiment, the battery pack mounting structure 300 is assembled by a battery pack mounting longitudinal beam 310, a first splicing tube 320, and a second splicing tube 330. The first splicing tube 320 and the second splicing tube 330 are arranged on the battery pack mounting longitudinal beam 310 at intervals along the extension direction of the battery pack mounting longitudinal beam 310. Since the battery pack mounting longitudinal beam 310 is arranged to extend along the X direction, the first splicing tube 320 and the second splicing tube 330 are arranged on the battery pack mounting longitudinal beam 310 at intervals in the X direction.

[0046] In addition, since the first splicing tube 320 and the second splicing tube 330 are both detachably connected to the threshold beam assembly 130 on the same side of the battery pack mounting longitudinal beam 310, the first splicing tube 320 and the second splicing tube 330 are located on the same side of the battery pack mounting longitudinal beam 310 in the Y direction and between the threshold beam assembly 130 and the battery pack mounting longitudinal beam 310.

[0047] It can be understood that the number of splicing pipes is not limited to two, and the number of splicing pipes can be appropriately increased or decreased according to design requirements.

[0048] In a further optional embodiment, the first splicing tube 320 and the second splicing tube 330 both include a mounting tube section 301 and a connecting tube section 302. Both ends of the connecting tube section 302 are respectively connected to the battery pack mounting longitudinal beam 310 and the mounting tube section 301, and the mounting tube section 301 is detachably connected to the sill beam assembly 130.

[0049] In this embodiment, the first splicing tube 320 and the second splicing tube 330 are both double-tube splicing structures, which are specifically spliced ​​together by an installation tube section 301 and a connecting tube section 302, wherein the installation tube section 301 is used to connect the sill beam assembly 130, and the connecting tube section 302 is used to connect the installation tube section 301 to the battery pack installation longitudinal beam 310.

[0050] It should be understood that the first splicing tube 320 and the second splicing tube 330 are not limited to the present embodiment. For example, both may be single-tube structures, or one may be a single-tube structure and the other may be a multi-tube splicing structure, so as to ensure that they can play the role of connecting the battery pack mounting longitudinal beam 310 and the threshold beam assembly 130.

[0051] In the illustrated embodiment, the length of the first splicing tube 320 and the length of the second splicing tube 330 are much smaller than the battery pack mounting longitudinal beam 310. The length of the battery pack mounting longitudinal beam 310 and the Y-direction spacing of the battery pack mounting longitudinal beams 310 on both sides ensure that the multiple connection points formed in cooperation with the battery pack 200 have a sufficient span range to ensure the connection reliability of the battery pack 200.

[0052] In some optional embodiments, the rocker beam assembly 130 includes a rocker inner panel front section 131 and a rocker inner panel rear section 132 , and the rocker inner panel front section 131 and the rocker inner panel rear section 132 are spliced ​​along the X direction.

[0053] In this embodiment, the sill beam assembly 130 includes a sill inner panel front section 131 and a sill inner panel rear section 132 spliced ​​along the X direction, wherein the first splicing tube 320 and the second splicing tube 330 are both detachably connected to the sill inner panel front section 131 .

[0054] In some optional embodiments, the vehicle chassis further includes a cabin cross beam joint 110 , which is located on both sides of the front floor assembly 120 in the Y direction, and the cabin cross beam joints 110 on both sides are located on the same side of the front floor assembly 120 in the X direction.

[0055] The battery pack mounting structure 300 and the cabin cross beam joint 110 are located on the same side of the front floor assembly 120 in the Z direction, and the battery pack mounting longitudinal beam 310 and the cabin cross beam joint 110 on the same side in the Y direction are detachably connected.

[0056] In this embodiment, the cabin cross beam joint 110 refers to a joint in the vehicle dash assembly extending toward the front floor assembly 120 along the X direction. It can be understood that the vehicle dash assembly can separate the front cabin from the cockpit, and the vehicle dash assembly is connected to the front longitudinal beam assembly, which is used to buffer impact energy and is arranged on both sides of the vehicle dash assembly in the Y direction.

[0057] The battery pack installation longitudinal beam 310 in the battery pack installation structure 300 connects the cabin cross beam joint 110 and the front floor assembly 120, so that the impact force received by the front longitudinal beam assembly on both sides of the Y direction can be transmitted to the battery pack installation longitudinal beam 310 on both sides of the Y direction via the cabin cross beam joint 110 on both sides of the Y direction.

[0058] The first splicing tube 320 and the second splicing tube 330 in the battery pack installation structure 300 are connected to the sill beam assembly 130 , so that the impact force on the battery pack installation longitudinal beam 310 can be transmitted to the sill beam assembly 130 .

[0059] It can be seen that by reasonably arranging the detachable connection position of the battery pack mounting structure 300, the battery pack mounting structure 300 can form a matching connection with the vehicle's front panel, the front floor assembly 120 and the door sill beam assembly 130, which is beneficial to energy absorption and buffering and can enhance the structural strength of the entire vehicle chassis.

[0060] Figure 3 for Figure 2 A partial schematic diagram of the vehicle chassis 100 in another perspective. Figure 2 and Figure 3 In a further optional embodiment, the front floor assembly 120 includes a front floor 121 , a front floor rear cross beam 122 , a first seat front cross beam structure 123 and a second seat front cross beam structure 124 .

[0061] The front floor rear cross beam 122 is arranged on the side of the front floor 121 away from the cabin cross beam joint 110 in the X direction, the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are located on the side of the front floor 121 opposite to the battery pack mounting structure 300 in the Z direction, and the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are arranged at intervals in the X direction.

[0062] The battery pack mounting longitudinal beam 310 is detachably connected to the first seat front cross beam structure 123 and the second seat front cross beam structure 124 , and both ends of the battery pack mounting longitudinal beam 310 are detachably connected to the cabin cross beam joint 110 and the front floor rear cross beam 122 , respectively.

[0063] In this embodiment, the components in the front floor assembly 120 are arranged based on the front floor 121, wherein the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are arranged at intervals along the X direction, and the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are located on one side of the front floor 121 in the Z direction, and the battery pack mounting structure 300 is located on the other side of the front floor 121 in the Z direction.

[0064] From the above, it can be seen that the cabin cross beam joint 110 and the battery pack mounting structure 300 are located on one side of the front floor assembly 120 in the Z direction. In other words, the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are as a structural unit, and the battery pack mounting structure 300 and the cabin cross beam joint 110 are as a structural unit, which are respectively located on opposite sides of the front floor 121 in the Z direction.

[0065] Since the battery pack installation longitudinal beam 310 and the first seat front cross beam structure 123 and the second seat front cross beam structure 124 are detachable, the front floor 121 is clamped between the seat front cross beam structure and the battery pack installation structure 300 in the Z direction. In addition, the two ends of the battery pack installation longitudinal beam 310 are detachably connected to the cabin cross beam joint 110 and the front floor rear cross beam 122, respectively, clamping the front floor 121 in the X direction.

[0066] Moreover, the two sides of the front floor 121 in the Y direction are correspondingly connected to the front sections 131 of the inner sill panels in the sill beam assemblies 130 on the two outer sides in the Y direction. In other words, the front sections 131 of the inner sill panels on the two outer sides in the Y direction clamp the front floor 121 in the Y direction, and the battery pack mounting structures 300 on the two sides in the Y direction can further improve the connection reliability in the Y direction.

[0067] It can be seen that by adding the battery pack mounting structure 300 , the front floor assembly 120 can be fixed in multiple directions, thus ensuring the structural strength of the front floor assembly 120 .

[0068] Figure 4 for Figure 2 The vehicle chassis in FIG. 1 hides the schematic diagram of the front floor 121 . Figure 5 for Figure 2 A partial enlarged view of the vehicle chassis from another perspective. Figure 4 and Figure 5 The battery pack mounting structure 300 is also provided with a plurality of mounting points P, and the mounting pipe section 301 has at least one mounting point P for detachably connecting with the threshold beam assembly 130 .

[0069] The battery pack mounting longitudinal beam 310 has a plurality of mounting points P arranged at intervals along the extension direction of the battery pack mounting longitudinal beam 310 for detachable connection with the front floor assembly 120 , the cabin cross beam joint 110 and the battery pack 200 .

[0070] In this embodiment, the battery pack mounting structure 300 has a plurality of mounting points P, and corresponding connection points are provided on the cabin cross beam joint 110, the front floor assembly 120, the threshold beam assembly 130 and the battery pack 200 to cooperate with the plurality of mounting points P to achieve a detachable connection.

[0071] In a specific application, each installation point P is a hole, and a detachable connection is achieved by penetrating fastening connectors (including, for example, bolts, screws, pins, etc.).

[0072] exist Figure 4 and Figure 5 In the illustrated embodiment, the plurality of mounting points P include a first mounting point P1 to a tenth mounting point P10, wherein the number of the tenth mounting points P10 is two, and the mounting pipe section 301 in the first splicing pipe 320 and the mounting pipe section 301 in the second splicing pipe 330 are each provided with one tenth mounting point P10. Obviously, the two tenth mounting points P10 are used to realize a detachable connection between the battery pack mounting structure 300 and the front section 131 of the inner panel of the door sill.

[0073] The first installation point P1 and the second installation point P2 are used to realize detachable connection between the battery pack installation structure 300 and the first seat front cross beam structure 123 and the second seat front cross beam structure 124 respectively.

[0074] The third installation point P3 is used to realize the detachable connection between the battery pack installation structure 300 and the cabin beam joint 110, and the fourth installation point P4 is used to realize the detachable connection between the battery pack installation structure 300 and the front floor rear beam 122.

[0075] The fifth mounting point P5 , the sixth mounting point P6 , the seventh mounting point P7 , the eighth mounting point P8 and the ninth mounting point P9 are used to realize a detachable connection between the battery pack mounting structure 300 and the battery pack 200 .

[0076] It can be understood that by adjusting the positions of the first installation point P1 to the fourth installation point P4, the position of the tenth installation point P10, the length of the first splicing tube 320 and the length of the second splicing tube 330, the position of the battery pack mounting structure 300 in the X and Y directions can be adjusted to adapt to battery packs 200 of different specifications and improve adaptability.

[0077] In some optional embodiments, the first splicing tube 320 is aligned with the first seat front cross beam structure 123 in the Z direction, and the second splicing tube 330 is aligned with the second seat front cross beam structure 124 in the Z direction.

[0078] In this embodiment, since the first splicing tube 320 and the second splicing tube 330 are aligned with the first seat front cross beam structure 123 and the second seat front cross beam structure 124 in the Z direction respectively, the first splicing tube 320 and the first seat front cross beam structure 123 form a connection point at the same position of the sill beam assembly 130 in the X direction, and the second splicing tube 330 and the second seat front cross beam structure 124 form a connection point at the same position of the sill beam assembly 130 in the X direction, which is more conducive to improving the impact resistance of the vehicle chassis 100.

[0079] Figure 6 for Figure 2 See the AA section view in Figure 6 In some optional embodiments, the first seat front cross beam structure 123 and the second seat front cross beam structure 124 both include a seat front cross beam 1201 and a battery pack longitudinal beam mounting bracket 1202 .

[0080] The battery pack longitudinal beam mounting bracket 1202 is connected to the front cross beam 1201 of the seat and is located on both sides of the front cross beam 1201 in the Y direction. The battery pack longitudinal beam mounting brackets 1202 on both sides are located between the front floor 121 and the front cross beam 1201 of the seat in the Z direction and are respectively detachably connected to the battery pack mounting longitudinal beams 310 on both sides.

[0081] In this embodiment, both ends of the seat front cross beam 1201 are connected to the front sections 131 of the inner panels of the door sills on both sides in the Y direction, and battery pack longitudinal beam mounting brackets 1202 are also provided at both ends of the seat front cross beam 1201 in the Y direction. The battery pack longitudinal beam mounting brackets 1202 are located between the front floor 121 and the seat front cross beam 1201 in the Z direction.

[0082] Please combine Figure 4 The battery pack longitudinal beam mounting brackets 1202 on both sides of the Y direction and the battery pack mounting longitudinal beams 310 on both sides of the Y direction are detachably connected through the first mounting point P1 and the second mounting point P2.

[0083] Please combine Figure 3 In a further optional embodiment, the first seat front cross beam structure 123 and the second seat front cross beam structure 124 both further include a plurality of front seat mounting brackets 1203 .

[0084] Multiple front seat mounting brackets 1203 are connected to the seat front cross beam 1201 and are arranged at intervals in the extension direction of the seat front cross beam 1201. The multiple front seat mounting brackets 1203 are located on the side of the seat front cross beam 1201 opposite to the battery pack longitudinal beam mounting bracket 1202 in the Z direction.

[0085] In this embodiment, the front seat mounting bracket 1203 is used to install the seat, and the front seat mounting bracket 1203 and the battery pack longitudinal beam mounting bracket 1202 are located on opposite sides of the seat front cross beam 1201 in the Z direction. The front seat mounting bracket 1203 is located on the side away from the front floor 121 in the Z direction relative to the battery pack longitudinal beam mounting bracket 1202.

[0086] In the illustrated embodiment, the number of front seat mounting brackets 1203 in the first seat front cross beam structure 123 and the second seat front cross beam structure 124 is 4, and they are arranged at intervals along the extension direction of the corresponding seat front cross beam 1201, where the extension direction of the seat front cross beam 1201 is the Y direction.

[0087] In a further optional embodiment, the first seat front cross beam structure 123 and the second seat front cross beam structure 124 both further include a seat front cross beam joint 1204, and the seat front cross beam joint 1204 is disposed at both ends of the seat front cross beam 1201 to correspondingly connect the Y-direction side sill beam assemblies 130.

[0088] In this embodiment, both ends of the seat front cross beam 1201 in the Y direction are connected to the sill inner panel front section 131 of the sill beam assembly 130 on both sides in the Y direction through the seat front cross beam joint 1204 .

[0089] In a further optional embodiment, the front floor assembly 120 further includes a front floor rear cross beam joint 125. The front floor rear cross beam joint 125 is disposed at both ends of the front floor rear cross beam 122 to correspondingly connect the sill beam assemblies 130 on both sides in the Y direction.

[0090] In this embodiment, both ends of the front floor rear cross beam joint 125 in the Y direction are connected to the sill inner panel rear sections 132 of the sill beam assemblies 130 on both sides in the Y direction through the front floor rear cross beam joint 125 .

[0091] In summary, the vehicle chassis 100 is additionally provided with a battery pack mounting structure 300, which improves the adaptability of the vehicle chassis 100 to battery packs 200 of different specifications, reduces development costs, and facilitates after-sales replacement. In addition, the battery pack mounting structure 300 can also strengthen the structural strength of the vehicle chassis 100, improve collision performance, and have higher safety.

[0092] Figure 7 A schematic diagram of the force transmission path when the vehicle chassis 100 in this embodiment is subjected to a frontal impact is shown. Figure 7 In the case where the battery pack mounting structure 300 is not provided and the vehicle is subjected to a frontal impact, the impact force is directly transmitted to the sill beam assembly 130 .

[0093] When the battery pack mounting structure 300 is provided, the impact force can also be transmitted to the battery pack mounting longitudinal beam 310 through the cabin cross beam joint 110, and the impact force on the battery pack mounting longitudinal beam 310 can be further dispersed through the first splicing tube 320 and the second splicing tube 330, the first seat front cross beam structure 123 and the second seat front cross beam structure 124, and the front floor rear cross beam 122.

[0094] Figure 8 A schematic diagram of the force transmission path of the vehicle chassis 100 in this embodiment when it is subjected to a side impact is shown. Figure 8 In the case where the battery pack mounting structure 300 is not provided and the vehicle is subjected to a side impact, the impact force directly acts on the sill beam assembly 130 and is transmitted via the first seat front cross beam structure 123 and the second seat front cross beam structure 124 .

[0095] When the battery pack mounting structure 300 is provided, the impact force can also be transmitted to the battery pack mounting longitudinal beam 310 through the first splicing tube 320 and the second splicing tube 330 , and further dispersed through the cabin cross beam joint 110 and the front floor rear cross beam 122 .

[0096] It can be seen that the vehicle chassis, when equipped with the battery pack mounting structure 300, has more force transmission paths, improves the impact resistance, strengthens the protection of the battery pack 200, and improves the safety of the entire vehicle.

[0097] Another aspect of the present application provides a vehicle, which includes the above-mentioned vehicle chassis 100 and a battery pack 200 , and the battery pack 200 is detachably connected to the battery pack mounting structure 300 .

[0098] Obviously, since the vehicle has the above-mentioned vehicle chassis 100, it has all the beneficial effects brought by the vehicle chassis 100, which will not be repeated here.

[0099] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle chassis, characterized in that: It includes a front floor assembly (120), a door sill beam assembly (130) and a battery pack mounting structure (300); The threshold beam assembly (130) is arranged on two outer sides of the front floor assembly (120) in the Y direction, and the battery pack mounting structure (300) is detachably connected to two sides of the front floor assembly (120) in the Y direction and is located between the threshold beam assemblies (130) on both sides; The battery pack installation structure (300) on the same side is detachably connected to the door sill beam assembly (130), and the battery pack installation structures (300) on both sides are used to be detachably connected to the battery pack (200).

2. The vehicle chassis according to claim 1, characterized in that: The battery pack installation structure (300) comprises a battery pack installation longitudinal beam (310), a first splicing tube (320) and a second splicing tube (330); The battery pack installation longitudinal beam (310) is arranged to extend along the X direction, and the first splicing pipe (320) and the second splicing pipe (330) are arranged on the battery pack installation longitudinal beam (310) at intervals along the extension direction of the battery pack installation longitudinal beam (310); The battery pack mounting longitudinal beam (310) is detachably connected to the front floor assembly (120) and is used to be detachably connected to the battery pack (200); the first splicing tube (320) and the second splicing tube (330) are both detachably connected to the threshold beam assembly (130) and are located between the battery pack mounting longitudinal beam (310) and the threshold beam assembly (130).

3. The vehicle chassis according to claim 2, characterized in that: The first splicing pipe (320) and the second splicing pipe (330) both include an installation pipe section (301) and a connection pipe section (302); The two ends of the connecting pipe section (302) are respectively connected to the battery pack mounting longitudinal beam (310) and the mounting pipe section (301), and the mounting pipe section (301) is detachably connected to the door sill beam assembly (130).

4. The vehicle chassis according to claim 3, characterized in that: It also includes a cabin cross beam joint (110), wherein the cabin cross beam joint (110) is located on both sides of the front floor assembly (120) in the Y direction, and the cabin cross beam joints (110) on both sides are located on the same side of the front floor assembly (120) in the X direction; The battery pack installation structure (300) and the cabin cross beam joint (110) are located on the same side of the front floor assembly (120) in the Z direction, and the battery pack installation longitudinal beam (310) and the cabin cross beam joint (110) on the same side in the Y direction are detachably connected.

5. The vehicle chassis according to claim 4, characterized in that: The front floor assembly (120) comprises a front floor (121), a front floor rear cross beam (122), a first seat front cross beam structure (123) and a second seat front cross beam structure (124); The front floor rear cross beam (122) is arranged on a side of the front floor (121) away from the cabin cross beam joint (110) in the X direction, the first seat front cross beam structure (123) and the second seat front cross beam structure (124) are located on a side of the front floor (121) opposite to the battery pack mounting structure (300) in the Z direction, and the first seat front cross beam structure (123) and the second seat front cross beam structure (124) are arranged at intervals in the X direction; The battery pack installation longitudinal beam (310) is detachably connected to the first seat front cross beam structure (123) and the second seat front cross beam structure (124), and two ends of the battery pack installation longitudinal beam (310) are detachably connected to the cabin cross beam joint (110) and the front floor rear cross beam (122), respectively.

6. The vehicle chassis according to claim 5, characterized in that: The first splicing tube (320) is aligned with the first seat front crossbeam structure (123) in the Z direction; The second splicing tube (330) is aligned with the second seat front cross beam structure (124) in the Z direction.

7. The vehicle chassis according to claim 5, characterized in that: The first seat front crossbeam structure (123) and the second seat front crossbeam structure (124) both include a seat front crossbeam (1201) and a battery pack longitudinal beam mounting bracket (1202); The battery pack longitudinal beam mounting bracket (1202) is connected to the front cross beam (1201) of the seat and is located on both sides of the front cross beam (1201) in the Y direction. The battery pack longitudinal beam mounting brackets (1202) on both sides are located between the front floor (121) and the front cross beam (1201) of the seat in the Z direction and are detachably connected to the battery pack mounting longitudinal beams (310) on both sides respectively.

8. The vehicle chassis according to claim 4, characterized in that: The battery pack mounting structure (300) is also provided with a plurality of mounting points (P); The installation pipe section (301) has at least one installation point (P) for detachably connecting with the door sill beam assembly (130); The battery pack mounting longitudinal beam (310) is provided with a plurality of mounting points (P) arranged at intervals along an extension direction of the battery pack mounting longitudinal beam (310), so as to be detachably connected to the front floor assembly (120), the cabin cross beam joint (110) and the battery pack (200).

9. The vehicle chassis according to any one of claims 1 to 8, characterized in that The threshold beam assembly (130) comprises a threshold inner panel front section (131) and a threshold inner panel rear section (132), and the threshold inner panel front section (131) and the threshold inner panel rear section (132) are spliced ​​along the X direction.

10. A vehicle, characterized in that: The vehicle comprises a battery pack (200) and a vehicle chassis (100) according to any one of claims 1 to 9; The battery pack (200) is detachably connected to the battery pack mounting structure (300).

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