Vehicle and chassis thereof

Abstract

The invention provides a vehicle and a chassis assembly thereof. The chassis assembly comprises a first longitudinal beam, a second longitudinal beam and a cross beam. The first longitudinal beam and the second longitudinal beam extend in the first direction and are arranged in a spaced mode in the second direction, and the first direction intersects with the second direction. The cross beam extends in the second direction, is connected with the first longitudinal beam and the second longitudinal beam and is detachably connected with an upper vehicle body of the vehicle. According to the vehicle and the chassis assembly thereof provided by the invention, the cross beam is detachably connected with the upper vehicle body of the vehicle, so that the assembly process of the chassis assembly and the upper vehicle body is facilitated, and the flexibility of the assembly process of the upper vehicle body and the chassis assembly is improved; and the upper vehicle body can be detached from the chassis assembly, so that the upper vehicle body or the chassis assembly can be conveniently maintained. The convenience of the connecting process of the chassis assembly and the upper vehicle body is improved, and meanwhile the convenience of maintenance of the upper vehicle body or the chassis assembly is improved.

Description

Vehicles and their chassis Technical Field

[0001] The present application relates to the field of vehicle technology, and more particularly, to a vehicle and a chassis thereof. Background Art

[0002] With the development of vehicle technology, people have put forward higher and higher requirements on the vehicle's ride comfort, lightweight and energy saving performance.

[0003] As a critical load-bearing and protective component of a vehicle, the chassis assembly's structural performance and size significantly impact the layout of related structural components within the vehicle. In related art, the chassis assembly and the vehicle's upper body are typically welded together, creating significant inconvenience during installation and maintenance.

[0004] Summary of the Invention

[0005] The present application provides a vehicle and a chassis assembly thereof, so as to improve the convenience of installation and maintenance of the chassis assembly and the upper body of the vehicle.

[0006] In a first aspect, an embodiment of the present application provides a chassis assembly for a vehicle, the chassis assembly including a first longitudinal beam, a second longitudinal beam and a cross beam; the first longitudinal beam and the second longitudinal beam respectively extend along a first direction and are spaced apart along a second direction, and the first direction and the second direction intersect; the cross beam extends along the second direction, the cross beam connects the first longitudinal beam and the second longitudinal beam, and the cross beam is detachably connected to the upper body of the vehicle.

[0007] According to the chassis assembly provided in the embodiment of the present application, a crossbeam is provided for detachable connection with the upper body of the vehicle to achieve a detachable connection between the chassis assembly and the upper body. This facilitates the assembly process of the chassis assembly and the upper body, improves the flexibility of the assembly process of the upper body and the chassis assembly, and when the chassis assembly or the upper body needs to be repaired, the upper body can be removed from the chassis assembly to facilitate repair work on the upper body or the chassis assembly. Therefore, the chassis assembly provided in the embodiment of the present application not only improves the convenience of the connection process between the chassis assembly and the upper body, but also helps to improve the convenience of maintenance of the upper body or the chassis assembly.

[0008] In some embodiments, the chassis assembly further includes a torsion box, with at least one torsion box connecting the first longitudinal beam and the cross beam, and at least another torsion box connecting the second longitudinal beam and the cross beam. The torsion box can be used to withstand vehicle collision loads and divert longitudinal loads laterally at the cross beam, thereby improving the vehicle's ability to withstand collision loads and operational stability.

[0009] In some embodiments, the crossbeam and the torsion box are detachably connected. This improves the flexibility of the connection between the torsion box and the crossbeam, allows for the proper configuration of the connection process, and facilitates disassembly of the crossbeam and the torsion box in the event of a malfunction or maintenance of a related structural component between the crossbeam or the torsion box, thereby facilitating repair or maintenance of the related structural component.

[0010] In some embodiments, the chassis assembly further includes a torsion box cover plate, which is disposed over the torsion box and connected to the first longitudinal beam or the second longitudinal beam. A crossbeam is connected to the torsion box cover plate. This arrangement allows the crossbeam to provide support for the torsion box cover plate, thereby maintaining the stability of the torsion box cover plate structure.

[0011] In some embodiments, the torsion box cover and the crossbeam are detachably connected. This arrangement improves the flexibility of the connection between the torsion box cover and the crossbeam, allowing for the appropriate connection process to be tailored to meet specific needs. It also facilitates the repair or maintenance of the structural components between the two.

[0012] In some embodiments, the chassis assembly further includes a bumper extending in the second direction and connecting the first longitudinal beam and the second longitudinal beam, with the bumper and the cross beam spaced apart in the first direction. With this arrangement, when the bumper is subjected to a collision load, the cross beam can bear a portion of the collision load, thereby reducing damage to related structural components on the side of the cross beam facing away from the bumper during a vehicle collision and improving the vehicle's collision performance.

[0013] In some embodiments, the chassis assembly further includes a battery, which includes a housing and battery cells. The battery cells are housed within the housing, and a crossbeam is disposed between the housing and the bumper along a first direction. Positioning the crossbeam between the housing and the bumper allows the crossbeam to partially absorb the impact load on the battery in the event of a vehicle collision, thereby reducing damage to the battery, maintaining the integrity of the battery structure, and improving the reliability of the battery.

[0014] In some embodiments, the crossbeam includes a frame beam and reinforcement ribs, wherein the frame beam is a hollow cavity, and the reinforcement ribs are located in the cavity of the frame beam and connected to the frame beam, thereby improving the structural strength of the crossbeam and increasing the bearing capacity of the crossbeam.

[0015] In a second aspect, an embodiment of the present application provides a vehicle comprising an upper vehicle body and a chassis assembly as in any embodiment of the first aspect; the upper vehicle body is detachably connected to a crossbeam.

[0016] The vehicle provided in the embodiment of the present application is characterized by a detachable connection between the crossbeam of the chassis assembly and the upper body, thereby achieving a detachable connection between the chassis assembly and the upper body. This facilitates the assembly process of the chassis assembly and the upper body, improves the flexibility of the assembly process of the upper body and the chassis assembly, and when the chassis assembly or the upper body needs to be repaired, the upper body can be removed from the chassis assembly to facilitate repair work on the upper body or the chassis assembly. Therefore, the chassis assembly provided in the embodiment of the present application not only improves the convenience of the connection process between the chassis assembly and the upper body, but also helps to improve the convenience of maintenance of the upper body or the chassis assembly.

[0017] In some embodiments, the upper vehicle body includes a front panel assembly, and the crossbeam is detachably connected to the front panel assembly. The crossbeam is positioned at the front of the vehicle so that the crossbeam provides protection for more structural parts of the vehicle, thereby improving the overall reliability of the vehicle.

[0018] In some embodiments, the chassis assembly further includes a bumper extending in the second direction and connecting the first longitudinal beam and the second longitudinal beam. The bumper and the cross beam are spaced apart in the first direction. The cross beam is connected to a side of the dash assembly facing the bumper. This arrangement allows the cross beam to at least partially block the dash assembly from external loads, thereby reducing damage to the dash assembly from external loads, maintaining the structural integrity of the dash assembly, and improving the vehicle's collision performance.

[0019] In some embodiments, the dash assembly includes a dash cross member extending along the second direction, and the cross member is connected to the dash cross member, which is beneficial for improving the connection strength and rigidity between the dash assembly and the cross member, thereby improving the overall structural strength and rigidity of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0021] FIG1 is a schematic structural diagram of a vehicle provided in one embodiment of the present application;

[0022] FIG2 is a schematic diagram of an explosion of a battery in a vehicle provided in one embodiment of the present application;

[0023] FIG3 is a schematic structural diagram of a battery module in a vehicle provided in an embodiment of the present application;

[0024] FIG4 is a schematic diagram of an explosion of a battery cell in a vehicle provided by some embodiments of the present application;

[0025] FIG5 is a schematic structural diagram of a chassis assembly provided in an embodiment of the present application;

[0026] FIG6 is a schematic cross-sectional view of the structure along AA in FIG5 ;

[0027] FIG7 is a schematic structural diagram of a vehicle provided in an embodiment of the present application with some structures omitted;

[0028] FIG8 is a schematic structural diagram of a front panel assembly in a vehicle provided in an embodiment of the present application.

[0029] In the drawings, the drawings are not drawn to scale.

[0030] Description of reference numerals:

[0031] 1. Vehicle; 1a. Motor; 1b. Controller;

[0032] 10. Battery; 11. Box; 111. First box portion; 112. Second box portion;

[0033] 20. Battery module;

[0034] 30. Battery cell; 31. Housing; 311. Shell; 311a. Opening; 312. End cap; 32. Electrode assembly;

[0035] 40. Chassis assembly; 41. First longitudinal beam; 42. Second longitudinal beam; 43. Cross beam; 431. Frame beam; 432. Reinforcement rib; 44. Torsion box; 45. Torsion box cover; 46. Bumper;

[0036] 50. Upper body; 51. Front panel assembly; 511. Front panel cross member;

[0037] M, first direction; N, second direction. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0040] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] The term "and / or" in this application simply describes the relationship between related objects, indicating that three possible relationships exist. For example, C and / or D can mean: C exists alone, C and D exist simultaneously, or D exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0043] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0044] The term "plurality" used in this application refers to two or more (including two).

[0045] After discovering that the chassis assembly and upper body of a vehicle were inconvenient to install and maintain, the inventors conducted a systematic analysis and research on the structure and connection process of the chassis assembly and upper body of the vehicle. The results showed that the upper body of the vehicle and the chassis of the vehicle are usually connected by welding. As a result, the relevant components of the chassis assembly and the upper body need to be welded before they can be assembled, which brings many inconveniences to the assembly of the chassis assembly and the upper body. In addition, in the event of a malfunction of the chassis assembly or the upper body of the vehicle, the connection between the chassis assembly and the upper body is not removable, and the maintenance space for the chassis assembly or the upper body is relatively small, which brings many inconveniences to the maintenance of the chassis assembly and the upper body. In other words, because the chassis assembly and the upper body of the vehicle in the related art are not removably connected, it brings many inconveniences to the assembly and maintenance of the two.

[0046] Based on the above problems discovered by the inventors, the inventors have improved the structure of the chassis assembly of the vehicle. The technical solutions described in the embodiments of the present application are applicable to the chassis assembly and the vehicle using the chassis assembly.

[0047] A chassis assembly provided according to an embodiment of the present application is used for a vehicle, and includes a first longitudinal beam, a second longitudinal beam, and a cross beam. The first and second longitudinal beams extend in a first direction, are spaced apart in a second direction, and intersect with each other. The cross beam extends in the second direction, connects the first and second longitudinal beams, and is detachably connected to the upper body of the vehicle.

[0048] The chassis assembly provided in the embodiment of the present application is provided with a crossbeam, and the crossbeam is provided with a detachable connection to the upper body of the vehicle, so as to achieve a detachable connection between the chassis assembly and the upper body. This facilitates the assembly process of the chassis assembly and the upper body, improves the flexibility of the assembly process of the upper body and the chassis assembly, and when the chassis assembly or the upper body needs to be repaired, the upper body can be removed from the chassis assembly to facilitate repair work on the upper body or the chassis assembly. Therefore, the chassis assembly provided in the embodiment of the present application not only improves the convenience of the connection process between the chassis assembly and the upper body, but also helps to improve the convenience of maintaining the upper body or the chassis assembly.

[0049] As shown in FIG1 , a battery 10 is provided inside a vehicle 1. The battery 10 may be provided at the bottom, head, or tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may serve as an operating power source for the vehicle 1.

[0050] The battery 10 may be assembled separately and then installed on the vehicle 1 , or, during the assembly process of the vehicle 1 , some structural parts of the vehicle 1 may be used as part of the battery 10 housing and assembled to form the battery 10 .

[0051] The vehicle 1 may further include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, to meet the power requirements of the vehicle 1 during starting, navigation, and driving.

[0052] In some embodiments of the present application, the battery 10 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0053] 2 , the battery 10 includes a battery cell (not shown in FIG2 ) and a housing 11 for accommodating the battery cell.

[0054] The housing 11 is used to accommodate battery cells, and the housing 11 can have various structural forms. In some embodiments, the housing 11 can include a first housing portion 111 and a second housing portion 112. The first housing portion 111 and the second housing portion 112 cover each other. The first housing portion 111 and the second housing portion 112 together define a storage space for accommodating battery cells. The second housing portion 112 can be a hollow structure with one end open. The first housing portion 111 is a plate-like structure, and the first housing portion 111 covers the open side of the second housing portion 112 to form the housing 11 with a storage space. The first housing portion 111 and the second housing portion 112 can also both be hollow structures with one side open. The open side of the first housing portion 111 covers the open side of the second housing portion 112 to form the housing 11 with a storage space. Of course, the first housing portion 111 and the second housing portion 112 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0055] In order to improve the sealing performance after the first box body 111 and the second box body 112 are connected, a sealing member, such as a sealant, a sealing ring, etc., may be further provided between the first box body 111 and the second box body 112 .

[0056] Assuming that the first box portion 111 covers the second box portion 112 , the first box portion 111 can also be referred to as an upper box cover, and the second box portion 112 can also be referred to as a lower box.

[0057] The box body 11 can be assembled during the assembly process of the vehicle 1, or the box body 11 and the battery cell can be assembled to form the battery 10, and then the battery 10 is assembled in the vehicle 1, which corresponds to CTC (Cell to Chassis, battery body integration) technology.

[0058] In the battery 10, there can be one or more battery cells. If there are multiple battery cells, they can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections. Multiple battery cells can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery module 20 can be housed within the housing 11. Alternatively, multiple battery cells can be first connected in series, in parallel, or in a hybrid connection to form a battery module 20. Multiple battery modules 20 can then be connected in series, in parallel, or in a hybrid connection to form a single unit, which is then housed within the housing 11.

[0059] In some embodiments, as shown in FIG3 , which is a schematic diagram of the structure of the battery module 20 shown in FIG2 , the battery module 20 includes multiple battery cells 30 . The multiple battery cells 30 are first connected in series, parallel, or in series to form the battery module 20 . The multiple battery modules 20 are then connected in series, parallel, or in series to form a single unit, which is then housed within the housing 11 .

[0060] In some embodiments, the multiple battery cells 30 in the battery module 20 may be electrically connected via a busbar to achieve parallel connection, series connection, or mixed connection of the multiple battery cells 30 in the battery module 20 .

[0061] Please refer to Figure 4, which is an exploded view of the battery cell 30 shown in Figure 3. The battery cell 30 provided in the embodiment of the present application includes an electrode assembly 32 and a housing 31. The housing 31 has a receiving cavity, and the electrode assembly 32 is received in the receiving cavity.

[0062] In some embodiments, the housing 31 may include a shell 311 and an end cap 312, wherein the shell 311 is a hollow structure with an opening on one side, and the end cap 312 covers the opening 311a of the shell 311 and forms a sealed connection to form a sealed space for accommodating the electrode assembly 32 and the electrolyte.

[0063] When assembling the battery cell 30 , the electrode assembly 32 may be placed in the housing 311 first, the end cap 312 may be placed over the opening of the housing 311 , and then the electrolyte may be injected into the housing 311 through the electrolyte injection port on the end cap 312 .

[0064] In some embodiments, the housing 31 may also be used to contain electrolyte, such as electrolyte solution. The housing 31 may have various structural forms.

[0065] FIG4 shows a schematic structural diagram of a battery cell provided in an embodiment of the present application.

[0066] The housing 311 can have a variety of shapes, such as a cylinder, a rectangular parallelepiped, etc. The shape of the housing 311 can be determined based on the specific shape of the electrode assembly 32. For example, if the electrode assembly 32 has a cylindrical structure, the housing 311 can also be a cylindrical structure. If the electrode assembly 32 has a rectangular parallelepiped structure, the housing 311 can also be a rectangular parallelepiped structure. In FIG4 , for example, both the housing 311 and the electrode assembly 32 have rectangular parallelepiped structures.

[0067] The shell 311 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0068] There may be one or more electrode assemblies 32 housed in the housing 311. In FIG4 , there are two electrode assemblies 32 housed in the housing 311.

[0069] In some embodiments, the electrode assembly 32 further includes a positive electrode sheet, a negative electrode sheet, and a separator. The electrode assembly 32 may be a wound structure formed by winding the positive electrode sheet, the separator, and the negative electrode sheet. The electrode assembly 32 may also be a stacked structure formed by stacking the positive electrode sheet, the separator, and the negative electrode sheet.

[0070] The positive electrode sheet may include a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The negative electrode sheet may include a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The separator is located between the positive and negative electrode sheets, isolating the positive and negative electrode sheets to reduce the risk of short circuits between the positive and negative electrode sheets.

[0071] The tabs in the electrode assembly 32 are divided into positive tabs and negative tabs. The positive tab is the portion of the positive electrode current collector that is not coated with the positive electrode active material layer. The negative tab is the portion of the negative electrode current collector that is not coated with the negative electrode active material layer.

[0072] As shown in Figures 1, 5, and 7, a chassis assembly 40 provided according to an embodiment of the present application is used for a vehicle 1. The chassis assembly 40 includes a first longitudinal beam 41, a second longitudinal beam 42, and a cross beam 43. The first longitudinal beam 41 and the second longitudinal beam 42 extend in a first direction M, respectively, and are spaced apart in a second direction N, intersecting the first direction M and the second direction N. The cross beam 43 extends in the second direction N, connecting the first longitudinal beam 41 and the second longitudinal beam 42, and is detachably connected to the upper body 50 of the vehicle 1.

[0073] The first longitudinal beam 41 and the second longitudinal beam 42 extend respectively along a first direction M and are spaced apart along a second direction N. The first direction M may be the X direction of the vehicle 1, and the second direction N may be the Y direction of the vehicle 1. In this case, the first direction M and the second direction N are perpendicular to each other. In other embodiments, the first direction M may be the X direction of the vehicle 1, and the second direction N may be at a certain angle to the Y direction. In this case, the first direction M and the second direction N intersect at an acute angle.

[0074] The crossbeam 43 extends along the second direction N, which is illustratively the Y direction of the vehicle 1. The crossbeam 43 connects the first longitudinal beam 41 and the second longitudinal beam 42. The crossbeam 43 and the first longitudinal beam 41 and the second longitudinal beam 42 can be directly connected to the crossbeam 43 or indirectly connected to the crossbeam 43 through an intermediate connector. The crossbeam 43 can be provided with both ends along the second direction N connected to the first longitudinal beam 41 and the second longitudinal beam 42.

[0075] Optionally, the crossbeam 43 may be fixedly connected to the first and second longitudinal beams 41, 42. Thus, once the crossbeam 43 is connected to the first and second longitudinal beams 41, 42, it cannot be removed. Alternatively, the crossbeam 43 may be detachably connected to the first and second longitudinal beams 41, 42. This improves the flexibility of the connection between the crossbeam 43 and the first and second longitudinal beams 41, 42, and allows for a reasonable process for connecting the crossbeam 43 to the first and second longitudinal beams 41, 42 during the assembly of the chassis assembly 40.

[0076] Optionally, the cross beam 43 may have any desired cross-sectional shape, and the structural shape of the cross beam 43 may be reasonably set according to the spatial layout of relevant structural parts of the chassis assembly 40 in the vehicle 1 to improve the space utilization inside the chassis assembly 40 in the vehicle 1.

[0077] Optionally, the material of the crossbeam 43 can be steel or aluminum. Steel has higher structural strength, and aluminum has lighter weight. In actual use, the material can be selected according to actual needs.

[0078] Since the cross beam 43 connects the first longitudinal beam 41 and the second longitudinal beam 42 , the cross beam 43 can provide a certain support to the first longitudinal beam 41 and the second longitudinal beam 42 , which is beneficial to improving the overall structural strength of the vehicle 1 .

[0079] Optionally, in the chassis assembly process, the battery 10 can be integrally formed, that is, in the CTC technology, the cross beam 43 can also be used as part of the box of the battery 10, so that the cross beam 43 can provide a certain support for the battery 10 and help improve the structural compactness of the chassis assembly 40.

[0080] The cross beam 43 is detachably connected to the upper body 50 of the vehicle 1 , and the upper body 50 and the cross beam 43 can be detachably connected by bolt connection or screw connection.

[0081] The cross beam 43 is detachably connected to the upper body 50. Optionally, the cross beam 43 can be detachably connected to the floor assembly of the upper body 50, or the cross beam 43 can be detachably connected to the front assembly 51 of the upper body 50, or the cross beam 43 can be detachably connected to both the floor assembly and the front assembly 51 of the upper body 50.

[0082] Since the cross member 43 is detachably connected to the upper body 50 of the vehicle 1, during the assembly process of the vehicle 1, the connection process between the chassis assembly 40 and the upper body 50 can be appropriately arranged according to process requirements, which helps to improve the flexibility of the connection process between the chassis assembly 40 and the upper body 50 and improve the assembly efficiency of the vehicle 1. During the operation of the vehicle 1, if the chassis assembly 40 or the upper body 50 malfunctions, the connection between the upper body 50 and the cross member 43 can be removed to provide sufficient space for repair work on the chassis assembly 40 or the upper body 50, thereby facilitating the removal of the upper body 50 from the chassis assembly 40 and facilitating repair work on the chassis assembly 40 or the upper body 50.

[0083] The chassis assembly 40 provided in the embodiment of the present application is provided with a crossbeam 43, and the crossbeam 43 is detachably connected to the upper body 50 of the vehicle 1, so as to achieve a detachable connection between the chassis assembly 40 and the upper body 50. This facilitates the assembly process of the chassis assembly 40 and the upper body 50, improves the flexibility of the assembly process of the upper body 50 and the chassis assembly 40, and when the chassis assembly 40 or the upper body 50 needs to be repaired, the upper body 50 can be removed from the chassis assembly 40 to facilitate repair work on the upper body 50 or the chassis assembly 40. Therefore, the chassis assembly 40 provided in the embodiment of the present application not only improves the convenience of the connection process between the chassis assembly 40 and the upper body 50, but also helps to improve the convenience of maintaining the upper body 50 or the chassis assembly 40.

[0084] As shown in FIG. 5 , in some embodiments, the chassis assembly 40 further includes a torsion box 44 . At least one torsion box 44 connects the first longitudinal beam 41 and the transverse beam 43 , and at least another torsion box 44 connects the second longitudinal beam 42 and the transverse beam 43 .

[0085] That is, the chassis assembly 40 further includes at least two torsion boxes 44 , and one of the two torsion boxes 44 connects the first longitudinal beam 41 and the cross beam 43 , and the other connects the second longitudinal beam 42 and the cross beam 43 .

[0086] The torsion box 44 can withstand certain impact, vibration or torsional loads, and may have a structure such as a cavity.

[0087] Specifically, the vehicle 1 will be subjected to different degrees of impact, collision or torsional load during driving. The torsion box 44 is provided, and the torsion box 44 can be used to bear part of the impact, collision or torsional load of the vehicle 1, and disperse the longitudinal load and transfer it laterally to the crossbeam 43, so that the crossbeam 43 can bear part of the impact and vibration load, thereby reducing the impact, collision and other loads of the vehicle 1 that are transmitted longitudinally to other structures, thereby reducing damage to related structures.

[0088] Therefore, by setting up a torsion box 44 and setting up a torsion box 44 to connect the first longitudinal beam 41 and the cross beam 43, and the second longitudinal beam 42 and the cross beam 43, the torsion box 44 can be used to bear the collision load of the vehicle 1, and the longitudinal load can be diverted laterally at the cross beam 43, which is beneficial to improving the ability of the vehicle 1 to withstand collision loads and the operating stability.

[0089] Optionally, the crossbeam 43 and the torsion box 44 may be fixedly connected, or the crossbeam 43 and the torsion box 44 may be detachably connected, which can be selected according to actual needs.

[0090] In some embodiments, the crossbeam 43 and the torsion box 44 are detachably connected.

[0091] Optionally, the crossbeam 43 and the torque box 44 may be fastened together by fasteners such as bolts or screws. Of course, the crossbeam 43 and the torque box 44 may also be connected in other detachable ways.

[0092] It can be understood that setting the crossbeam 43 and the torque box 44 as a detachable connection is conducive to improving the connection flexibility of the torque box 44 and the crossbeam 43. The connection process between the two can be reasonably set as needed, and when the relevant structural parts between the crossbeam 43 or the torque box 44 fail or need maintenance, it is easy to disassemble the crossbeam 43 and the torque box 44 to facilitate the repair or maintenance of the relevant structural parts.

[0093] As shown in FIG5 , in some embodiments, the chassis assembly 40 further includes a torsion box sealing plate 45 , which covers the torsion box 44 and is connected to the first longitudinal beam 41 or the second longitudinal beam 42 , and the cross beam 43 is connected to the torsion box sealing plate 45 .

[0094] The torsion box sealing plate 45 is provided on the torsion box 44 to provide a certain degree of protection for the torsion box 44 so as to resist at least part of the impact of the external load, thereby helping to maintain the stability and integrity of the structure of the torsion box 44 .

[0095] The torsion box sealing plate 45 is connected to the crossbeam 43, and the two can be fixedly connected, or the two can be detachably connected. Setting the torsion box sealing plate 45 to be connected to the crossbeam 43 can provide a certain support for the torsion box sealing plate 45 by using the crossbeam 43 to maintain the stability of the torsion box sealing plate 45 structure.

[0096] In some embodiments, the torsion box cover 45 and the crossbeam 43 are detachably connected.

[0097] Such a configuration is conducive to improving the flexibility of the connection between the torsion box sealing plate 45 and the crossbeam 43, and the connection process between the two can be reasonably set as needed. It also facilitates the repair or maintenance of the related structural parts between the two.

[0098] As shown in FIG. 5 and FIG. 7 , in some embodiments, the chassis assembly 40 further includes a bumper 46 , which extends along the second direction N and connects the first longitudinal beam 41 and the second longitudinal beam 42 . The bumper 46 and the cross beam 43 are spaced apart along the first direction M.

[0099] In this way, the bumper 46, the first longitudinal beam 41, the second longitudinal beam 42 and the cross beam 43 are jointly arranged to form a closed structure. When the vehicle 1 collides, the collision load received by the bumper 46 is transmitted to the rear of the vehicle 1 along the first longitudinal beam 41 and the second longitudinal beam 42, and is dispersed at the connection between the cross beam 43 and the first longitudinal beam 41 and the second sub-longitudinal beam respectively, and is transmitted relatively to the two ends of the cross beam 43 along the second direction N. In this way, the collision load received by the bumper 46 will be partially borne by the cross beam 43, and the collision load transmitted along the first longitudinal beam 41 and the second longitudinal beam 42 to the side of the cross beam 43 facing away from the bumper 46 will be greatly reduced, which is beneficial to reducing the damage of the collision load to the relevant structural parts on the side of the cross beam 43 facing away from the bumper 46.

[0100] Therefore, a bumper 46 is provided, and the bumper 46 is spaced apart from the cross beam 43. When the bumper 46 is subjected to a collision load, the cross beam 43 can be used to bear part of the collision load, which is beneficial to reducing the damage to the relevant structural parts of the cross beam 43 on the side away from the bumper 46 caused by the collision of the vehicle 1, thereby improving the collision performance of the vehicle 1.

[0101] In some embodiments, the chassis assembly 40 further includes a battery 10 , which includes a box 11 and a battery cell 30 . The battery cell 30 is accommodated in the box 11 . Along the first direction M, the crossbeam 43 is disposed between the box 11 and the bumper 46 .

[0102] Optionally, the battery 10 can be assembled and then installed in the chassis assembly 40, or, during the assembly process of the chassis assembly 40, it can be assembled into a battery 10 as a whole, and some structural parts of the chassis assembly 40 can be used as part of the box 11 of the battery 10, which corresponds to the CTC technology. While improving the structural strength of the battery 10, it can also reduce the additional space occupied by the battery 10 as a whole in the chassis assembly 40, thereby improving the space utilization of the chassis assembly 40 of the vehicle 1 and increasing the capacity of the battery 10.

[0103] The crossbeam 43 is set between the box body 11 and the bumper 46. When the vehicle 1 is subjected to a load such as a collision, the bumper 46 will deform. When the deformation of the bumper 46 is large enough, the crossbeam 43 will be squeezed first. The crossbeam 43 will bear part of the deformation of the bumper 46, which is beneficial to maintaining the structural integrity of the battery 10.

[0104] Therefore, a crossbeam 43 is provided between the box body 11 and the bumper 46. When the vehicle 1 collides, the crossbeam 43 can be used to bear part of the collision load for the battery 10, which is beneficial to reduce the damage to the battery 10 caused by the collision of the vehicle 1, maintain the structural integrity of the battery 10, and improve the reliability of the battery 10.

[0105] As shown in FIG5 and FIG6 , in some embodiments, the crossbeam 43 includes a frame beam 431 and a reinforcing rib 432 . The frame beam 431 has a hollow cavity. The reinforcing rib 432 is located in the cavity of the frame beam 431 and connected to the frame beam 431 .

[0106] The structure or shape of the frame beam 431 can be set as needed. The frame beam 431 and the reinforcement rib 432 can be integrally formed. The frame beam 431 has a hollow cavity. The reinforcement rib 432 is located in the cavity of the frame beam 431 and is connected to the frame beam 431. The reinforcement rib 432 can be connected into any structural type in the cavity of the frame beam 431 and connected to the frame beam 431 in the cavity. In this way, the reinforcement rib 432 can provide a certain support for the frame beam 431 in the cavity. When the frame beam 431 is subjected to loads such as impact, vibration or collision, the reinforcement rib 432 can increase the bearing capacity of the frame beam 431.

[0107] Therefore, providing the crossbeam 43 including the frame beam 431 and the reinforcing ribs 432 is beneficial to improving the structural strength of the crossbeam 43 and improving the bearing capacity of the crossbeam 43 .

[0108] As shown in FIG1 and FIG7 , a vehicle 1 provided according to an embodiment of the present application includes an upper vehicle body 50 and a chassis assembly 40 provided in any of the above embodiments. The upper vehicle body 50 is detachably connected to a crossbeam 43 .

[0109] The vehicle 1 provided in the embodiment of the present application has a detachable connection between the crossbeam 43 of the chassis assembly 40 and the upper body 50, thereby achieving a detachable connection between the chassis assembly 40 and the upper body 50. This facilitates the assembly process of the chassis assembly 40 and the upper body 50, improves the flexibility of the assembly process of the upper body 50 and the chassis assembly 40, and when the chassis assembly 40 or the upper body 50 needs to be repaired, the upper body 50 can be removed from the chassis assembly 40 to facilitate repair work on the upper body 50 or the chassis assembly 40. Therefore, the chassis assembly 40 provided in the embodiment of the present application not only improves the convenience of the connection process between the chassis assembly 40 and the upper body 50, but also helps to improve the convenience of maintaining the upper body 50 or the chassis assembly 40.

[0110] As shown in FIG. 7 , in some embodiments, the upper vehicle body 50 includes a front panel assembly 51 , and the cross member 43 is detachably connected to the front panel assembly 51 .

[0111] The front panel assembly 51 is located in the front direction of the vehicle 1, and a crossbeam 43 is provided to be detachably connected to the front panel assembly 51 of the vehicle 1, that is, the crossbeam 43 is set in a front position of the vehicle 1 so that the crossbeam 43 provides protection for more structural parts of the vehicle 1, thereby improving the overall reliability of the vehicle 1.

[0112] As shown in FIG7 , in some embodiments, the chassis assembly 40 further includes a bumper 46 , which extends along the second direction N and connects the first longitudinal beam 41 and the second longitudinal beam 42 . The bumper 46 is spaced apart from the cross beam 43 along the first direction M. The cross beam 43 is connected to a side of the front panel assembly 51 facing the bumper 46 .

[0113] The cross beam 43 is connected to the side of the front panel assembly 51 facing the bumper 46 , so the collision load borne by the bumper 46 will be first transferred to the cross beam 43 , so that the cross beam 43 bears at least part of the collision load for the front panel assembly 51 .

[0114] Therefore, a crossbeam 43 is provided to be connected to the side of the front panel assembly 51 facing the bumper 46, and the crossbeam 43 can be used to block at least part of the load for the front panel assembly 51, which is beneficial to reducing the damage of the external load to the front panel assembly 51, and further beneficial to maintaining the structural integrity of the front panel assembly 51 and improving the collision performance of the vehicle 1.

[0115] As shown in FIG. 7 and FIG. 8 , in some embodiments, the cowl assembly 51 includes a cowl cross member 511 . The cowl cross member 511 extends along the second direction N, and the cross member 43 is connected to the cowl cross member 511 .

[0116] The front panel assembly 51 includes a front panel crossbeam 511, which can be used to provide a higher supporting force for the front panel assembly 51. The crossbeam 43 is connected to the front panel crossbeam 511, and the crossbeam 43 and the front panel crossbeam 511 can have a higher connection force, which is beneficial to improving the connection strength between the front panel assembly 51 and the crossbeam 43.

[0117] Therefore, providing a connection between the cross beam 43 and the front panel cross beam 511 is beneficial to improving the connection strength and rigidity between the front panel assembly 51 and the cross beam 43, and improving the overall structural strength and rigidity of the vehicle 1.

[0118] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chassis assembly for a vehicle, the chassis assembly comprising: A first longitudinal beam and a second longitudinal beam, wherein the first longitudinal beam and the second longitudinal beam extend along a first direction respectively and are spaced apart along a second direction, and the first direction and the second direction intersect; A cross beam extends along the second direction, the cross beam connects the first longitudinal beam and the second longitudinal beam, and the cross beam is detachably connected to the upper body of the vehicle.

2. The chassis assembly according to claim 1, wherein: The chassis assembly further includes a torsion box, at least one of the torsion boxes connects the first longitudinal beam and the cross beam, and at least another of the torsion boxes connects the second longitudinal beam and the cross beam.

3. The chassis assembly according to claim 2, characterized in that: The crossbeam and the torsion box are detachably connected.

4. The chassis assembly according to claim 2 or 3, wherein: The chassis assembly also includes a torsion box sealing plate, which is disposed on the torsion box and connected to the first longitudinal beam or the second longitudinal beam, and the cross beam is connected to the torsion box sealing plate.

5. The chassis assembly according to claim 4, wherein: The torsion box sealing plate is detachably connected to the crossbeam.

6. The chassis assembly according to any one of claims 1 to 5, wherein: The chassis assembly further includes a bumper extending along the second direction and connecting the first longitudinal beam and the second longitudinal beam. The bumper and the cross beam are spaced apart along the first direction.

7. The chassis assembly according to claim 6, wherein: The chassis assembly further includes a battery, which includes a box and a battery cell. The battery cell is accommodated in the box. Along the first direction, the crossbeam is disposed between the box and the bumper.

8. A chassis assembly according to any one of claims 1 to 7, wherein: The crossbeam comprises a frame beam and reinforcing ribs, the frame beam is a hollow cavity, the reinforcing ribs are located in the cavity of the frame beam and are connected to the frame beam.

9. A vehicle comprising: A chassis assembly as claimed in any one of claims 1 to 8; An upper vehicle body is detachably connected to the cross beam.

10. The vehicle according to claim 9, wherein: The upper vehicle body comprises a front panel assembly, and the cross beam is detachably connected to the front panel assembly.

11. The vehicle according to claim 10, wherein: The chassis assembly further includes a bumper, the bumper extending along the second direction and connecting the first longitudinal beam and the second longitudinal beam, the bumper and the cross beam being spaced apart along the first direction; The cross beam is connected to a side of the front enclosure component facing the bumper.

12. The vehicle according to claim 10 or 11, wherein: The dash assembly includes a dash cross beam extending along the second direction, and the cross beam is connected to the dash cross beam.

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