Vehicles and their chassis

Abstract

The present application provides a vehicle and its chassis. The vehicle includes an upper body and a chassis. The chassis includes a lower body and a plurality of battery cells. The lower body includes a framework, and the framework has an accommodating cavity. The plurality of battery cells are installed in the accommodating cavity and connected to the framework. The framework of the chassis is detachably connected to the upper body. By installing the battery cells in the accommodating cavity of the framework, the framework of the lower body can simultaneously function as a battery box, thereby reducing the partial redundant structure of the conventional battery, improving the cruising range of the vehicle, and achieving the effects of weight reduction and cost reduction. The upper body and the chassis are detachably connected, and the upper body and the chassis can be separated, decoupled, and connected by detachment, and the upper body and the chassis can be independently developed, so that the upper body and the chassis can be replaced according to demand, shortening the research and development cycle and reducing costs.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority to international patent application PCT / CN2023 / 090261, proposed to be filed on April 24, 2023, with the title "Vehicle", and to international patent application PCT / CN2023 / 090254, proposed to be filed on April 24, 2023, with the title "Underbody, Chassis and Vehicle", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of vehicle technology, and more particularly to vehicles and their chassis. [Background technology]

[0003] At present, with the rapid development of automation and smart vehicles, new energy vehicles are increasingly being favored and purchased by the public. How to improve vehicle range and reduce costs has become one of the research directions of vehicle technology. Summary of the Invention [Means for solving the problem]

[0004] The present application provides a vehicle and a chassis thereof that can improve the vehicle's range and reduce costs.

[0005] According to a first aspect, an embodiment of the present application provides a vehicle chassis, the chassis including a lower body and a plurality of battery cells. The lower body includes a framework, and the framework has a receiving cavity. The plurality of battery cells are installed in the receiving cavity and connected to the framework. By mounting the battery cells in the receiving cavity of the framework, the framework of the lower body can simultaneously function as a battery box, thereby reducing the partial redundant structure of the conventional battery, improving the cruising range of the vehicle, and achieving the effects of weight reduction and cost reduction. The framework can protect the battery cells, reduce the risk of the battery cells being subjected to external impact, and improve reliability.

[0006] In some embodiments, the framework includes a first side member and a first cross member, the first side member extending along a longitudinal direction of the vehicle, the first cross member extending along a width direction of the vehicle, and the first side member connected to the first cross member. By utilizing the cross member and the side member of the lower body as a battery box, it is possible to reduce the partial redundancy structure of the conventional battery, improve the driving range of the vehicle, and achieve the effects of weight reduction and cost reduction.

[0007] In some embodiments, the first side member is an underbody rocker.

[0008] In some embodiments, the chassis further includes a cover plate, the cover plate being located above the plurality of battery cells and connected to the first side member and the first cross member, the cover plate protecting the battery cells from above and reducing an impact on the battery cells caused by a passenger stepping on the battery cells.

[0009] In some embodiments, the cover plate serves as a floor for the passenger compartment of the vehicle. The cover plate may also serve as a floor at the same time, thereby saving vehicle material, improving the vehicle's range, and achieving weight and cost savings.

[0010] In some embodiments, the plurality of battery cells may be connected to a cover plate, which may carry the plurality of battery cells.

[0011] In some embodiments, the battery cells are bonded to the cover plate, which can improve the overall rigidity of the cover plate and reduce deformation of the cover plate when the vehicle is subjected to a crash.

[0012] In some embodiments, the chassis further includes a third cross member, the third cross member being disposed above the cover plate and connected to the first side member, the third cross member can improve the torsional rigidity of the lower body, reduce deformation of the first side member and the cover plate when the vehicle is subjected to a side impact, reduce pressure on the battery cells, and improve reliability.

[0013] In some embodiments, a third cross member is used to mount vehicle seats to improve chassis integrity, reduce part count, and increase vehicle range.

[0014] In some embodiments, the third cross member is welded to the cover plate. Welding the third cross member to the cover plate can improve lower body integrity and simplify upper body construction.

[0015] In some embodiments, the framework includes two first side members and two first cross members, the two first side members being located on either side of the width direction of the plurality of battery cells, and the two first cross members being located on either side of the length direction of the plurality of battery cells, and each of the first cross members being connected to the two first side members.

[0016] In some embodiments, the framework further includes four torsion box assemblies, and each of the first cross members is connected to the two first side members via two torsion box assemblies, respectively. The torsion box assemblies can realize a relative fixation between the first cross member and the first side member, and improve the continuity of force transmission between the first cross member and the first side member.

[0017] In some embodiments, the framework further includes a second cross member disposed in the receiving cavity, the second cross member and the first cross member are disposed at a distance along the longitudinal direction, and the second cross member is connected to the first side member. The second cross member reinforces the strength of the framework, and can reduce deformation of the framework when the vehicle is subjected to an external impact, thereby reducing the risk of the battery cells exploding under pressure.

[0018] In some embodiments, the second cross members are multiple, the multiple second cross members are spaced apart along the longitudinal direction, and the battery cells are disposed between adjacent second cross members, and the second cross members can protect the battery cells from both sides.

[0019] In some embodiments, the framework further includes a guard, the guard being positioned below the plurality of battery cells and covering the storage cavity from below. The guard is fixedly connected to the first side member and the first cross member, or the guard is removably connected to the first cross member and the first side member. The guard can seal the storage cavity and reduce external impurities impacting the battery cells, improving cycle life of the battery cells.

[0020] In some embodiments, the chassis further includes a front side member assembly and a front collision prevention beam, the front side member assembly being fixedly connected to the framework or removably connected to the framework, and the front collision prevention beam being fixedly connected to the front side member assembly or removably connected to the front side member assembly.

[0021] In some embodiments, the chassis further includes a rear side member assembly and a rear collision prevention beam, the rear side member assembly being fixedly connected to the framework or removably connected to the framework, and the rear collision prevention beam being fixedly connected to the rear side member assembly or removably connected to the rear side member assembly.

[0022] According to a second aspect, an embodiment of the present application provides a vehicle, the vehicle includes an upper body and a chassis according to any one of the embodiments of the first aspect. The framework of the chassis is removably connected to the upper body. The upper body and the chassis are removably connected, and the upper body and the chassis can be separated, decoupled, and connected by being attached and detached, and the upper body and the chassis can be independently developed, so that the upper body and the chassis can be replaced according to demand, which can shorten the research and development cycle and reduce costs.

[0023] In some embodiments, the underbody is configured to be connected to the upper body after the battery cells are attached to the framework.

[0024] In some embodiments, the vehicle further includes a vehicle connecting member, and the framework and the upper body are detachably connected through the connecting member. The upper body and the chassis are detachably connected through the connecting member, and the upper body and the chassis can be separated, decoupled, and connected by attaching and detaching the connecting member, and the upper body and the chassis can be independently developed, so that the upper body and the chassis can be replaced according to demand, shortening the research and development cycle and reducing costs. One chassis can be matched with upper bodies of different styles to meet the demand for diversification of styles by users.

[0025] In some embodiments, the connecting member includes a bolt. The bolt is highly standardized and easy to replace. The bolt connection is easy to attach and detach, which contributes to improving the efficiency of assembling the upper body and the lower body.

[0026] In some embodiments, one of the upper body and the framework is provided with at least a through hole, and the other is provided with at least a threaded hole. A bolt passes through the through hole and is threadedly connected to a wall of the threaded hole. The through hole and the threaded hole can facilitate the bolt to detachably connect the upper body and the framework.

[0027] In some embodiments, the bolt extends along the height of the vehicle. The bolt may be attached along the height of the vehicle, thus making it easier to install and remove the bolt.

[0028] In some embodiments, the upper body includes a front arm beam assembly, the lower body includes a shock absorber tower, and the front arm beam assembly and the shock absorber tower are detachably connected via a connecting member. The connecting member can improve the connection strength and connection stability between the upper body and the lower body by connecting the front arm beam assembly and the shock absorber tower.

[0029] In some embodiments, the framework includes a first cross member, the upper body includes a cowl assembly, and the cowl assembly includes a fourth cross member. The first cross member and the fourth cross member are removably connected via a connecting member. The connecting member can improve the connection strength and connection stability between the upper body and the lower body by connecting the first cross member and the fourth cross member.

[0030] In some embodiments, the framework includes a first side member, the upper body includes a second side member, and the first side member and the second side member are removably connected via a connecting member, which can improve the connection strength and connection stability between the upper body and the lower body by connecting the first side member and the second side member.

[0031] In some embodiments, the first side member includes a first body and a first connecting portion, the first connecting portion being located outside the first body, and an upper end of the first body being higher than the first connecting portion in the height direction of the vehicle. The second side member includes a second body and a second connecting portion, the second connecting portion being located inside the second body, the second body being located above the first connecting portion, and the second connecting portion being located above the first body. The second body is removably connected to the first connecting portion, and the second connecting portion is removably connected to the first body. By connecting the first side member and the second side member at positions with different heights, the connection strength between the first side member and the second side member can be improved and the risk of relative displacement between the first side member and the second side member can be reduced. The first side member and the second side member overlap each other along the width direction, thereby restricting each other and reducing the relative displacement between the first side member and the second side member in the width direction.

[0032] In some embodiments, the vehicle further includes a seal member, a portion of the seal member being sandwiched between the second mating portion and the first body.

[0033] In some embodiments, the upper body includes a rear floor assembly, and the lower body includes a fifth cross member, and the fifth cross member and the rear floor assembly are removably connected via a connecting member. The connecting member can improve the connection strength and connection stability between the upper body and the lower body by connecting the fifth cross member and the rear floor assembly.

[0034] In some embodiments, the vehicle further includes a seal member interposed between the upper body and the framework, the seal member providing a seal between the upper body and the lower body, which can reduce contaminants into the passenger compartment, improve passenger experience, and increase vehicle reliability.

[0035] In some embodiments, the seal surrounds the passenger compartment of the vehicle, and the annular seal can increase the sealing area, isolate the passenger compartment from the outside environment, and reduce outside impurities from entering the passenger compartment through the gap between the upper body and the lower body, improving the passenger experience and increasing the reliability of the vehicle.

[0036] In some embodiments, the framework includes two first side members, two first cross members, and four torsion box assemblies, each of which is connected to the two first side members via two torsion box assemblies. The two first cross members, the two first side members, and the four torsion box assemblies collectively form a first support surface. The upper body includes a fourth cross member, a sixth cross member, two second side members, and four connecting plates, each of which is connected to the fourth cross member and the sixth cross member via two connecting plates. The fourth cross member, the sixth cross member, the two second side members, and the four connecting plates collectively form a second support surface. The seal member is sandwiched between the first support surface and the second support surface. The first support surface and the second support surface can provide a stable support for the seal member and improve the airtightness and watertightness of the passenger compartment.

[0037] In order to more clearly explain the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the embodiments of the present application. It is obvious that the drawings described below are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on the drawings without exerting creative efforts. [Brief description of the drawings]

[0038] [Figure 1] 1 is an exploded schematic view of a vehicle according to some embodiments of the present application. [Diagram 2] FIG. 2 is a schematic local cross-sectional view of the vehicle shown in FIG. [Diagram 3] 1 is a structural schematic diagram of a vehicle underbody according to some embodiments of the present application. [Figure 4] FIG. 4 is an enlarged schematic view of the circle A in FIG. [Diagram 5] 1 is a schematic diagram of a local underside view of a vehicle underbody according to some embodiments of the present application. [Figure 6]1 is a schematic diagram of a local cross-section of a vehicle according to some embodiments of the present application. [Figure 7] 2 is a schematic diagram of another local cross-section of a vehicle according to some embodiments of the present application. FIG. [Figure 8] 1 is a structural schematic diagram of an upper body of a vehicle according to some embodiments of the present application. [Figure 9] 1 is a schematic diagram of a partial structure of an upper body of a vehicle according to some embodiments of the present application. [Figure 10] 1 is a schematic diagram of a local cross-section of a vehicle according to some embodiments of the present application. [Figure 11] 2 is a schematic diagram of another local cross-section of a vehicle according to some embodiments of the present application. FIG. [Figure 12] 2 is a schematic cross-sectional view of another local portion of a vehicle according to some embodiments of the present application. [Figure 13] 2 is a further schematic cross-sectional view of a vehicle according to some embodiments of the present application. [Figure 14] 2 is a schematic diagram of another local cross-section of a vehicle according to some embodiments of the present application. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] In the drawings, the drawings are not drawn to scale.

[0040] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained based on the embodiments of the present application without the need for creative efforts by those skilled in the art are all within the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art in the technical field of this application, and the terms used in the specification of this application are only for describing specific embodiments and are not intended to limit this application, and the terms "comprise" and "have" and any variations thereof in the specification, claims and above drawings of this application are intended to cover non-exclusive "comprise". The terms "first", "second", etc. in the specification and claims of this application or the above drawings are not intended to describe a specific order or subordinate relationship, but are intended to distinguish different objects.

[0042] An "embodiment" referred to in this application means 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 appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they mutually exclusive separate or alternative embodiments of other embodiments.

[0043] In the description of the present application, it should be explained that unless otherwise clearly defined or limited, the terms "attached", "connected", "connected" and "attached" should be understood in a broad sense, for example, may be a fixed connection, a removable connection, or an integral connection, may be a direct connection, may be an indirect connection through an intermediate medium, or may be communication between the insides of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0044] The term "and / or" in this application merely describes the relationship between related objects and indicates that three relationships may exist, for example, A and / or B may represent three cases: A alone, A and B in combination, and B alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "or" relationship.

[0045] In the embodiments of the present application, the same reference numerals represent the same elements, and for the sake of brevity, detailed descriptions of the same elements in different embodiments are omitted. It should be understood that the thickness, length, width, etc. of various elements in the embodiments of the present application shown in the drawings, and the overall thickness, length, width, etc. of the integrated device are illustrative descriptions, and should not be construed as any limitation to the present application.

[0046] The term "plurality" as used herein refers to two or more (including two).

[0047] In the related art, a battery pack is formed by previously mounting a plurality of battery cells in a housing, and then the battery pack is mounted on the vehicle body, but the housing takes up weight and space in the vehicle, affecting the vehicle's range.

[0048] In view of this, the embodiments of the present application provide a technical solution, which omits the traditional battery box by directly integrating battery cells into the chassis, thereby improving the battery capacity and increasing the vehicle range.

[0049] The technical solutions described in the embodiments of the present application are applied to vehicles. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or a range extender vehicle, etc.

[0050] FIG. 1 is an exploded schematic view of a vehicle according to some embodiments of the present application, FIG. 2 is a local cross-sectional schematic view of the vehicle shown in FIG. 1, FIG. 3 is a structural schematic view of the lower body of a vehicle according to some embodiments of the present application, FIG. 4 is an enlarged schematic view of the circular frame A in FIG. 3, FIG. 5 is a local underside schematic view of the lower body of a vehicle according to some embodiments of the present application, FIG. 6 is a local cross-sectional schematic view of a vehicle according to some embodiments of the present application, and FIG. 7 is another local cross-sectional schematic view of a vehicle according to some embodiments of the present application.

[0051] 1 to 7, an embodiment of the present application provides a vehicle, which includes an upper body 1 and a chassis 4.

[0052] In some embodiments, the chassis 4 includes an underbody 2 and a plurality of battery cells 8. The battery cells 8 are connected to the underbody 2.

[0053] In some embodiments, the underbody 2 includes a framework 20 having a receiving cavity 20b. The plurality of battery cells 8 are installed in the receiving cavity 20b and connected to the framework 20.

[0054] The battery cell 8 may be a minimum unit capable of independently realizing charging and discharging. The battery cell 8 may include a lithium ion secondary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, etc., and the embodiment of the present application is not limited thereto. The battery cell 8 may have a cylindrical body, a flat body, a rectangular parallelepiped, or other shape, and the embodiment of the present application is not limited thereto. The battery cell 8 may be a cylindrical battery cell, a rectangular parallelepiped rectangular battery cell, or a pouch battery cell.

[0055] By mounting the battery cells 8 in the receiving cavities 20b of the framework 20, the framework 20 of the lower body 2 can simultaneously function as a battery box, thereby reducing the partial redundant structure of the conventional battery, improving the vehicle's driving range, and achieving the effects of weight reduction and cost reduction. The framework 20 can protect the battery cells 8, reduce the risk of the battery cells 8 being subjected to external impact, and improve reliability.

[0056] In some embodiments, the chassis 4 may further include a drive system and a chassis system, the chassis system including a transmission system, a running system, a steering system, and a braking system. The drive system may include a motor.

[0057] In the embodiment of the present application, the battery cell 8 is integrated into the chassis 4, and CTC (Cell to Chassis) battery-chassis integration is realized.

[0058] The embodiments of the present application integrate the battery system, drive system and chassis system, reducing the number of parts, saving space, improving structural efficiency, significantly reducing vehicle weight, and increasing battery range.

[0059] The chassis 4 of the embodiment of the present application has high compatibility, improves the consistency with the finished vehicle, and can be mass-produced quickly and flexibly. The high integration and modularization of the chassis 4 allows it to be cross-platform and adaptable to all levels and types of future vehicle models. At the same time, the high integration and modularization can better simplify the number of parts and production steps, reduce costs, and increase battery capacity and driving range.

[0060] By providing a separate lower body 2, the complete chassis system, battery system and drive system can be integrated into the lower body 2, thereby allowing the entire chassis 4 to be designed and operated independently of the upper body 1, and for the drive and passenger compartment S of the finished vehicle to be developed and assembled independently of each other.

[0061] In some embodiments, the framework 20 includes a first side member 22 and a first cross member 23, the first side member 22 extending along a longitudinal direction X of the vehicle, the first cross member 23 extending along a transverse direction Y of the vehicle, and the first side member 22 connected to the first cross member 23. Optionally, the longitudinal direction X, the transverse direction Y and the height direction Z are perpendicular to each other. Exemplarily, the longitudinal direction X is parallel to the direction of the leading and trailing ends of the vehicle.

[0062] The first side member 22 may be directly connected to the first cross member 23, or may be indirectly connected to the first cross member 23 via another member.

[0063] By using the cross members and side members of the lower body 2 as battery boxes, the partial redundant structure of conventional batteries can be reduced, and the vehicle's cruising range can be improved, while also achieving weight reduction and cost reduction effects.

[0064] In some embodiments, the first side member 22 is a rocker of the underbody 2 .

[0065] In some embodiments, the framework 20 includes two first side members 22 and two first cross members 23, the two first side members 22 being located on both sides of the plurality of battery cells 8 along the width direction Y, the two first cross members 23 being located on both sides of the plurality of battery cells 8 along the longitudinal direction X, and each first cross member 23 being connected to the two first side members 22.

[0066] Exemplarily, the two first side members 22 are spaced apart along the width direction Y of the vehicle, and the two first cross members 23 are spaced apart along the longitudinal direction X of the vehicle. The first side member 22 connects the two first cross members 23.

[0067] In some embodiments, the framework 20 further includes four torsion box assemblies 24, and each first cross member 23 is connected to two first side members 22 via two torsion box assemblies 24, respectively.

[0068] The torsion box assembly 24 realizes relative fixation between the first cross member 23 and the first side member 22, and can improve the continuity of force transmission between the first cross member 23 and the first side member 22.

[0069] In some embodiments, the torsion box assembly 24 may include a torsion box and other connection members, such as standard members, attached to the torsion box.

[0070] In some embodiments, the two torsion box assemblies 24 closest to the front may be referred to as front torsion box assemblies, and the two torsion box assemblies 24 closest to the rear may be referred to as rear torsion box assemblies.

[0071] In some embodiments, the chassis 4 further includes a cover plate 25 that is positioned above the plurality of battery cells 8 and is connected to the first side member 22 and the first cross member 23 .

[0072] The cover plate 25 protects the battery cells 8 from above, and can reduce the impact that the battery cells 8 receive when a passenger steps on them.

[0073] In some embodiments, the cover plate 25 is connected between the two first side members 22 .

[0074] In some embodiments, the cover plate 25 serves as the floor of the vehicle passenger compartment. The cover plate 25 may also serve as the floor at the same time, thereby saving vehicle material, improving the vehicle's range, and achieving weight and cost savings.

[0075] In some embodiments, the plurality of battery cells 8 are connected to a cover plate 25. The cover plate 25 may carry the plurality of battery cells 8.

[0076] In some embodiments, the multiple battery cells 8 are bonded to the cover plate 25. Bonding the battery cells 8 to the cover plate 25 can improve the overall rigidity of the cover plate 25 and reduce deformation of the cover plate 25 when the vehicle experiences a collision.

[0077] In some embodiments, the cover plate 25 is further connected to two first cross members 23 .

[0078] In some embodiments, the framework 20 further includes a second cross member 26 disposed in the receiving cavity 20b, the second cross member 26 and the first cross member 23 being spaced apart along the longitudinal direction X, and the second cross member 26 being connected to the first side member 22.

[0079] The second cross member 26 may be one or more.

[0080] The second cross member 26 reinforces the strength of the framework 20, and can reduce the deformation of the framework 20 when the vehicle receives an external impact, thereby reducing the risk of the battery cells exploding under pressure.

[0081] In some embodiments, the chassis 4 includes a plurality of second cross members 26 spaced apart along the longitudinal direction X. The battery cells 8 are disposed between adjacent second cross members 26.

[0082] The second cross member 26 can protect the battery cells 8 from both sides.

[0083] In some embodiments, each second cross member 26 connects two first side members 22 .

[0084] In some embodiments, the first side member 22 and the second cross member 26 protrude from the lower surface 25 a of the cover plate 25 .

[0085] In some embodiments, the at least two second cross members 26, the two first side members 22 and the cover plate 25 form a cartridge 27 having an opening therearound, the opening facing the cover plate 25, and a plurality of battery cells 8 are housed in the cartridge 27.

[0086] The number of cartridges 27 may be one or more.

[0087] The first side member 22 and the second cross member 26 form a framework structure surrounding the battery cells 8, which protects the battery cells 8 and reduces the risk of the battery cells 8 being subjected to external impact, thereby improving reliability.

[0088] In some embodiments, there are three second cross members 26. The receiving cavity contains two cartridges 27.

[0089] The three second cross members 26 , the two first side members 22 and the cover plate 25 may surround and form two cartridges 27 .

[0090] The three second cross members 26 improve the overall strength of the lower body 2, reduce deformation of the first side members 22 when the vehicle experiences a side impact, reduce the pressure experienced by the battery cells 8, and improve reliability.

[0091] In some embodiments, the first side member 22 and the second cross member 26 may be welded via cold metal transfer (CMT), connected by rotary tapping rivets (FDS), self-piercing rivets (SPR), or the like.

[0092] In some embodiments, the framework 20 further includes a guard 5, which is positioned below the plurality of battery cells 8 and covers the receiving cavity 20b from below. The guard 5 can seal the receiving cavity 20b, reduce external impurities impacting the battery cells 8, and improve the cycle life of the battery cells.

[0093] In some embodiments, the guard 5 is fixedly connected to the first side member 22 .

[0094] In some embodiments, the guard 5 is removably connected to the first side member 22, thereby facilitating maintenance of the battery cells 8. Illustratively, the guard 5 may be connected to the first side member 22 via bolts.

[0095] In some embodiments, the guard 5 is fixedly connected to the first cross member 23 .

[0096] In some embodiments, the guard 5 is removably connected to the first cross member 23, thereby facilitating maintenance of the battery cells 8. Illustratively, the guard 5 may be connected to the first cross member 23 via bolts.

[0097] In some embodiments, a gasket 9 is provided between the guard 5 and the first side member 22. Optionally, the gasket 9 may be foamed cotton. Alternatively, a sealant may be provided between the guard 5 and the first side member 22.

[0098] In some embodiments, the guard 5 is connected to the second cross member 26. Optionally, the guard 5 is connected to the second cross member 26 via bolts.

[0099] In some alternative embodiments, the second cross member 26 may be omitted and the first cross member 23, the first side member 22 and the cover plate 25 may be utilized to enclose and form the cartridge 27. The receiving cavity contains the cartridge 27.

[0100] In some embodiments, the chassis 4 further includes a third cross member 28 that is mounted above the cover plate 25 and connected to the first side member 22 .

[0101] The third cross member 28 improves the torsional rigidity of the lower body 2, reduces deformation of the first side member 22 and the cover plate 25 when the vehicle receives a side impact, reduces the pressure received by the battery cells 8, and improves reliability.

[0102] In some embodiments, the third cross member 28 is used to mount vehicle seats to improve chassis integrity, reduce part count, and increase vehicle range.

[0103] In some embodiments, the third cross member 28 is welded to the cover plate 25. Welding the third cross member 28 to the cover plate 25 can improve the integrity of the underbody 2 and simplify the structure of the upper body 1.

[0104] In some embodiments, both ends of the third cross member 28 are connected to two of the first side members 22, respectively.

[0105] In some embodiments, the underbody 2 includes a front side member assembly 291. The front side member assembly 291 may be used to mount a front suspension of the chassis 4. Exemplarily, the front side member assembly 291 may include a front side member, a stiffener plate, a standard member, and other members. The stiffener plate and the standard member may be attached to the front side member. Optionally, the standard member may include a bolt or a stud.

[0106] The front side members can protect the life safety of passengers in the vehicle by collapsing and absorbing energy in the event of a serious collision.

[0107] In some embodiments, the front side member assembly 291 is fixedly connected to the framework 20 .

[0108] In some embodiments, the front side member assembly 291 is removably connected to the framework 20. The front side member assembly 291 may be assembled independently of the framework 20, or the front side member assembly 291 may be connected to the framework 20 after the battery cells 8 are attached to the framework 20. Optionally, the front side member assembly 291 is connected to the framework 20 via bolts.

[0109] In some embodiments, the front side member assembly 291 may be connected to the front torsion box assembly.

[0110] In some embodiments, there are two front side member assemblies 291, and the two front side member assemblies 291 are connected to two front torsion box assemblies, respectively.

[0111] In some embodiments, the underbody 2 further includes a front crash prevention beam 292 , which is fixedly connected to the front side member assembly 291 .

[0112] In some embodiments, the front crash prevention beam 292 may be removably or non-removably connected to the front side member assembly 291 .

[0113] In some embodiments, the front collision prevention beam 292 is removably connected to the front side member assembly 291. Optionally, the front collision prevention beam 292 is connected to the front side member assembly 291 via a bolt. The front collision prevention beam 292 may be assembled independently from other structures of the underbody 2.

[0114] In some embodiments, the underbody 2 further includes a rear side member assembly 293. The rear side member assembly 293 may be used to mount a rear suspension of the chassis 4.

[0115] In some embodiments, the rear side member assembly 293 may include a rear side member and a connecting member, such as a standard member, attached to the rear side member.

[0116] The rear side members can protect the lives of passengers in the vehicle by collapsing and absorbing energy in the event of a serious collision.

[0117] In some embodiments, the rear side member assembly 293 is fixedly connected to the framework 20 .

[0118] In some embodiments, the rear side member assembly 293 is removably connected to the framework 20. The rear side member assembly 293 may be assembled independently of the framework 20, or the rear side member assembly 293 may be connected to the framework 20 after the battery cells 8 are attached to the framework 20. Optionally, the rear side member assembly 293 is connected to the framework 20 via bolts.

[0119] In some embodiments, the rear side member assembly 293 may be connected to a rear torsion box assembly.

[0120] In some embodiments, there are two rear side member assemblies 293, and the two rear side member assemblies 293 are connected to two rear torsion box assemblies, respectively.

[0121] In some embodiments, the underbody 2 further includes a rear collision prevention beam 294, which is connected to the rear side member assembly 293. Optionally, the rear collision prevention beam 294 is fixedly connected to the rear side member assembly 293.

[0122] In some embodiments, the rear collision prevention beam 294 is detachably connected to the rear side member assembly 293. Illustratively, the rear collision prevention beam 294 is connected to the rear side member assembly 293 via a bolt. The rear collision prevention beam 294 may be assembled independently from other structures of the underbody 2.

[0123] In some embodiments, the framework 20 is removably connected to the upper body 1. The upper body 1 and the chassis 4 are removably connected, and the upper body 1 and the chassis 4 can be separated, decoupled, and connected by detachment, and the upper body 1 and the chassis 4 can be independently developed, so that the upper body 1 and the chassis 4 can be replaced according to demand, shortening the research and development cycle and reducing costs.

[0124] In some embodiments, the underbody 2 is configured to be connected to the upper body 1 after the battery cells 8 are attached to the framework 20 .

[0125] In some embodiments, the vehicle further includes a vehicle connecting member 3 , and the framework 20 and the upper body 1 are removably connected via the connecting member 3 .

[0126] The type of the connection member 3 may be flexibly selected. In some examples, the connection member 3 may include a fastener, and optionally, the fastener may include at least one of a bolt, a nut, a stud, a screw, and a pin. In other examples, the connection member 3 may include a buckle.

[0127] The number of connecting members 3 may be one or more.

[0128] In some examples, there are a plurality of connection members 3. The plurality of connection members 3 may employ the same type of member, for example, the plurality of connection members 3 are all bolts, or the plurality of connection members 3 may employ various members, for example, some of the connection members 3 are bolts and some of the connection members 3 are screws.

[0129] The upper body 1 and the chassis 4 are divided into two independent assemblies by installing the connecting member 3. Exemplarily, the upper body 1 and the lower body 2 are two independent assemblies.

[0130] In the embodiment of the present application, the upper body 1 and the chassis 4 are detachably connected via a connecting member 3. By attaching and detaching the connecting member 3, the upper body 1 and the chassis 4 can be separated, decoupled and connected, and the upper body 1 and the chassis 4 can be developed independently. The upper body 1 and the chassis 4 can be replaced according to demand, shortening the research and development cycle and reducing costs.

[0131] One chassis 4 can match with upper bodies 1 of different styles, and can meet the diversified style demands of users.

[0132] In some embodiments, the upper body 1 and the lower body 2 are detachably connected via a connecting member 3. The upper body 1 and the lower body 2 are detachably connected via the connecting member 3, and by attaching and detaching the connecting member 3, the upper body 1 and the lower body 2 can be separated, decoupled, and connected, and the upper body 1 and the lower body 2 can be independently developed, so that the upper body 1 and the lower body 2 can be replaced according to demand, shortening the research and development cycle and reducing costs. One lower body 2 can be matched with upper bodies 1 of different styles, and can meet the demand for diversification of styles by users.

[0133] In some embodiments, there may be a plurality of connection members 3. The positions of the plurality of connection members 3 may be set according to the demand for connection strength between the upper body 1 and the chassis 4. Alternatively, the positions of the plurality of connection members 3 may be set according to the demand for connection strength between the upper body 1 and the lower body 2.

[0134] In some embodiments, the connecting member 3 includes a bolt.

[0135] Illustratively, there are a plurality of connection members 3, and at least a portion of the plurality of connection members 3 are bolts.

[0136] The bolts may be threadedly connected to the upper body 1 and may be threadedly connected to the lower body 2 of the chassis 4 .

[0137] The bolts are highly standardized and easy to replace. The bolt connection method is easy to attach and detach, which contributes to improving the efficiency of assembling the upper body 1 and the lower body 2.

[0138] Compared to the upper body 1 and chassis 4 being connected by processes such as welding, rotary tapping riveting (FDS), self-piercing riveting (SPR), and adhesive bonding, by connecting the upper body 1 and chassis 4 using bolts, it is possible to achieve decoupling of the physical structures between the upper body 1 and the lower body 2.

[0139] In some embodiments, one of the upper body 1 and the lower body 2 is provided with at least a through hole H1, and the other is provided with at least a screw hole H2. A bolt passes through the through hole H1 and is screwed into the hole wall of the screw hole H2. By providing the through hole H1 and the screw hole H2, it is possible to easily detachably connect the upper body 1 and the lower body 2 with a bolt.

[0140] In some embodiments, at least a through hole H1 is provided in one of the upper body 1 and the framework 20, and at least a screw hole H2 is provided in the other. A bolt passes through the through hole H1 and is screwed into the hole wall of the screw hole H2.

[0141] In some examples, the upper body 1 is provided with a through hole H1 and the framework 20 is provided with a screw hole H2, in some other examples, the framework 20 is provided with a through hole H1 and the upper body 1 is provided with a screw hole H2, in some further examples, the upper body 1 is provided with a through hole H1 and a screw hole H2, and the framework 20 is also provided with a screw hole H2 and a through hole H1, and selectively, some bolts pass through the through hole H1 of the upper body 1 and are screw-connected to the hole wall of the screw hole H2 of the framework 20, and some other bolts pass through the through hole H1 of the framework 20 and are screw-connected to the hole wall of the screw hole H2 of the upper body 1.

[0142] By providing the through holes H1 and the screw holes H2, it is possible to facilitate detachable connection between the upper body 1 and the framework 20 with bolts.

[0143] In some embodiments, the bolt extends along a height direction Z of the vehicle.

[0144] The height direction Z of the vehicle may be the height direction Z when the vehicle is in a traveling state.

[0145] For example, the central axis of the bolt, the central axis of the through hole H1, and the central axis of the screw hole H2 may all be parallel to the height direction Z.

[0146] The bolt may be attached in the height direction Z of the vehicle, thus facilitating attachment and detachment of the bolt.

[0147] In some embodiments, the upper body 1 is provided with a nut 6a, which is provided with a threaded hole H2 and is used to threadably connect to a bolt. Optionally, the nut 6a may include a hexagonal flange face nut.

[0148] Exemplarily, the upper body 1 may include an upper body sheet metal member 11 and a nut 6a, and the nut 6a may be welded to the upper body sheet metal member 11.

[0149] In some embodiments, the underbody 2 is provided with a nut 6b. The nut 6b is provided with a threaded hole H2 and is used to threadably connect to a bolt. Optionally, the nut 6b may include a hexagonal flange surface nut.

[0150] Illustratively, the underbody 2 may include a lower body sheet metal member 21 and a nut 6b, and the nut 6b may be welded to the lower body sheet metal member 21.

[0151] In some embodiments, the vehicle further includes a seal member 7 , which is interposed between the upper body 1 and the lower body 2 .

[0152] The sealing member 7 may achieve sealing in various ways. For example, the sealing member 7 may achieve sealing by compressive deformation, or the sealing member 7 may achieve sealing by adhesion or other ways.

[0153] The sealing member 7 may be made of various materials, for example, the sealing member 7 may be made of an elastic compressible material such as rubber, foam cotton, etc. Alternatively, the sealing member 7 may be formed by hardening a colloid.

[0154] The sealing member 7 provides a seal between the upper body 1 and the lower body 2, which can reduce impurities into the passenger compartment S, improve passenger experience, and increase vehicle reliability.

[0155] In some embodiments, the vehicle includes a seal member 7 , which is interposed between the upper body 1 and the framework 20 .

[0156] In some embodiments, the sealing member 7 may have advantages such as dustproofness, waterproofness, soundproofing, wear resistance, and ease of repair.

[0157] In some embodiments, the seal member 7 surrounds the passenger compartment S of the vehicle.

[0158] The passenger compartment S may be a space for passengers to sit in, surrounded by the upper vehicle body 1 and the lower vehicle body 2. For example, members such as a seat and an armrest may be arranged in the passenger compartment S.

[0159] The annular sealing member 7 increases the sealing area, separates the passenger compartment S from the external environment, and reduces external impurities that enter the passenger compartment S through the gap between the upper body 1 and the lower body 2, improving the passenger experience and enhancing the reliability of the vehicle.

[0160] In some embodiments, the seal member 7 is glued to the underbody 2 .

[0161] In some examples, an adhesive may be applied to the underbody 2 and the sealing member 7 may be adhered to the underbody 2, and in alternative examples, the sealing member 7 may include a backing adhesive which may be adhered directly to the underbody 2.

[0162] The embodiments of the present application can reduce the offset of the sealing member 7 when the upper body 1 and the lower body 2 are attached or detached, thereby reducing the misalignment of the sealing member 7 and improving assembly efficiency, and can further improve the sealing performance by bonding the sealing member 7 to the lower body 2.

[0163] In some embodiments, the material of the seal member 7 includes ternary ethyl propyl rubber EPDM (Ethylene Propylene Diene Monomer).

[0164] Ternary ethyl propyl rubber has strong resilience and good sealing performance.

[0165] In some embodiments, the underbody 2 is configured to be connected to the upper body 1 after the battery cells 8 are attached to the framework 20 .

[0166] Because the battery cells 8 are already attached to the lower body 2 before the upper body 1 and the lower body 2 are assembled, if sealing is achieved by using methods such as welding or adhesive baking when connecting the upper body 1 and the lower body 2, the battery cells 8 are likely to be damaged. In the embodiment of the present application, sealing is achieved by using the sealing member 7, which can reduce the risk of the battery cells 8 being damaged in the process of assembling the upper body 1 and the lower body 2.

[0167] In some embodiments, the vehicle further includes a complete vehicle interior, a human-computer interaction system, and an entertainment system attached to the upper body 1. Embodiments of the present application may allow the complete vehicle interior, the human-computer interaction system, and the entertainment system to be developed separately and independently of the chassis 4.

[0168] In some embodiments, each first side member 22 is removably connected to the upper body 1 via at least one connecting member 3 .

[0169] The two first side members 22 have relatively high strength, and by connecting the first side members 22 to the upper body 1, the connection strength and connection stability between the upper body 1 and the lower body 2 can be improved.

[0170] In some embodiments, the first cross member 23 is removably connected to the upper body 1 via at least one connecting member 3 .

[0171] In some embodiments, by connecting the first cross member 23 and the first side member 22 to the upper body 1, the connection strength and connection stability between the upper body 1 and the lower body 2 can be improved.

[0172] In some embodiments, the torsion box assembly 24 is removably connected to the upper body 1 via at least one connecting member 3 .

[0173] By connecting the torsion box assembly 24 to the upper vehicle body 1, the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2 can be further improved.

[0174] In some embodiments, the two first cross members 23, the two first side members 22 and the four torsion box assemblies 24 collectively form a first support surface 20a. The vehicle further includes a seal member 7, which is interposed between the upper body 1 and the first support surface 20a.

[0175] The first support surface 20a provides a stable support for the seal member 7, and can improve the airtightness and watertightness of the passenger compartment S.

[0176] In some embodiments, the upper body 1 includes a second bearing surface 10a, and the seal member 7 is interposed between the second bearing surface 10a and the first bearing surface 20a.

[0177] In some embodiments, the topography of the first support surface 20a and the topography of the second support surface 10a are matched.

[0178] In some embodiments, a number of battery cells 8 are mounted on the side of the cover plate 25 facing away from the upper body 1 and connected to the cover plate 25 .

[0179] FIG. 8 is a structural schematic diagram of an upper body of a vehicle according to some embodiments of the present application, and FIG. 9 is a partial structural schematic diagram of an upper body of a vehicle according to some embodiments of the present application.

[0180] As shown in FIGS. 8 and 9, in some embodiments, the upper body 1 includes at least one of a front arm beam assembly 12, a rear floor assembly 13, and a cowl assembly 14.

[0181] In a conventional vehicle, the front arm beam assembly 12, the rear floor assembly 13 and the cowl assembly 14 are generally integrated into the lower body. In the embodiment of the present application, the components originally belonging to the lower body can be integrated into the upper body 1, simplifying the structure of the lower body 2 and facilitating the installation of structures such as a battery system, a drive system, etc., on the lower body 2.

[0182] In some embodiments, the front arm beam assembly 12 may include a front arm beam, brackets, and other components (e.g., standard components) integrated onto the front arm beam. The front arm beam can provide support to several components of the vehicle, such as lighting fixtures.

[0183] In some embodiments, the rear floor assembly 13 includes a rear floor, a seat mounting structure mounted on the rear floor, a standard member mounted on the rear floor, and other members mounted on the rear floor. The rear floor may carry seats or other members.

[0184] In some embodiments, the cowl assembly 14 includes a cowl and other components (e.g., standard components and brackets) that are mounted on the cowl. The cowl can be a critical barrier between the engine compartment and the cab, which can absorb and transfer energy during a crash, provide sufficient rigidity for the body framework, as well as affect the sealing of the completed vehicle.

[0185] In some embodiments, the upper body 1 includes a front arm beam assembly 12, a rear floor assembly 13, and a cowl assembly 14. The embodiments of the present application integrate major components, such as the front arm beam assembly 12, the rear floor assembly 13, and the cowl assembly 14, that originally belonged to the lower body 2 into the upper body 1.

[0186] In some embodiments, the rear floor assembly 13 includes a rear floor, the cover plate 25 being closer to the front of the vehicle than the rear floor.

[0187] In some embodiments, the front arm beam assembly 12 is located at the tip of the upper body 1 near the front of the vehicle.

[0188] In some embodiments, the upper body 1 further includes a back panel assembly 15. The cowl assembly 14 is located on a forward side of the back panel assembly 15.

[0189] In some embodiments, the back panel assembly 15 includes a back panel and other components (such as standards, brackets, strikers, etc.) that are installed on the back panel. The back panel is an automobile cover member, which is the rear panel of the automobile trunk and is one of the main force-bearing structural members in the rear of the automobile.

[0190] 2 to 9 collectively, in some embodiments, the upper body 1 includes a rear floor assembly 13, a cowl assembly 14, and two second side members 16, each connecting the rear floor assembly 13 to the cowl assembly 14. The rear floor assembly 13, the cowl assembly 14, and the two second side members 16 collectively form a second support surface 10a.

[0191] In some embodiments, the cowl assembly 14 includes a fourth cross member 141 and the rear floor assembly 13 includes a sixth cross member 131. Illustratively, one first cross member 23 and the fourth cross member 141 are removably connected via a connecting member 3, and another first cross member 23 and the fourth cross member 141 are removably connected via the connecting member 3.

[0192] In some embodiments, the upper body 1 includes a fourth cross member 141, a sixth cross member 131, two second side members 16, and four connecting plates 18, and each second side member 16 is connected to the fourth cross member 141 and the sixth cross member 131 via the two connecting plates 18, respectively. The fourth cross member 141, the sixth cross member 131, the two second side members 16, and the four connecting plates 18 collectively form a second support surface 10a. The vehicle further includes a seal member 7, and the seal member 7 is interposed between the second support surface 10a and the lower body 2.

[0193] The second support surface 10a can stably press the pressure-resistant seal member 7, thereby improving the airtightness and watertightness of the passenger compartment S.

[0194] In some embodiments, the seal member 7 is sandwiched between the first support surface 20a and the second support surface 10a.

[0195] The first support surface 20a is annular, and the second support surface 10a is annular. The first support surface 20a and the second support surface 10a sandwich an annular seal member 7 therebetween to achieve sealing of the passenger compartment S.

[0196] In some embodiments, the second side member 16 may be a rocker of the upper body 1 .

[0197] In some embodiments, the cover plate 25 is integrated into the underbody 2 and the upper body 1 is hollowed out.

[0198] In some embodiments, the cowl assembly 14 includes a fourth cross member 141 and two connecting plates 18 connected to either end of the fourth cross member 141, and the rear floor assembly 13 includes a sixth cross member 131 and two other connecting plates 18 connected to either end of the sixth cross member 131.

[0199] Exemplarily, the two connecting plates 18 connected to the fourth cross member 141 may be hinge inner panels. The hinge inner panels may be front door hinges, and the IP dashboard provides the mounting points.

[0200] Exemplarily, the two connecting plates 18 connected to the sixth cross member 131 may be rear side member upper cover plates. The rear side member upper cover plates can connect the second side member and the wheel house plate.

[0201] FIG. 10 is a schematic cross-sectional view of a vehicle according to some embodiments of the present application.

[0202] 10 , in some embodiments, the upper body 1 includes a front arm beam assembly 12, and the lower body 2 includes a shock absorber tower 295. The front arm beam assembly 12 and the shock absorber tower 295 are detachably connected via a connecting member 3.

[0203] The connecting member 3 connects the front arm beam assembly 12 and the shock absorber tower 295, thereby improving the connection strength and connection stability between the upper body 1 and the lower body 2.

[0204] Illustratively, the shock absorber tower 295 is a metal structural member attached to an automobile shock absorber, and the shock absorber spring of the suspension system may be attached to the shock absorber tower 295.

[0205] In some embodiments, the front arm beam assembly 12 and the shock absorber tower 295 are detachably connected via a plurality of connection members 3. The connection point between the front arm beam assembly 12 and the shock absorber tower 295 is on a force transmission path, and the plurality of connection members 3 can improve the stability of the connection between the front arm beam assembly 12 and the shock absorber tower 295.

[0206] FIG. 11 is another schematic cross-sectional view of a vehicle according to some embodiments of the present application.

[0207] 11 , in some embodiments, the framework 20 includes a first cross member 23, the upper body 1 includes a cowl assembly 14, and the cowl assembly 14 includes a fourth cross member 141. The first cross member 23 and the fourth cross member 141 are removably connected via a connecting member 3.

[0208] The connecting member 3 connects the first cross member 23 and the fourth cross member 141, thereby making it possible to improve the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2.

[0209] FIG. 12 is a schematic cross-sectional view of another local portion of a vehicle according to some embodiments of the present application.

[0210] Referring to FIG. 12 , the framework includes a first side member 22 and the upper body 1 includes a second side member 16, and the first side member 22 and the second side member 16 are removably connected via a connecting member 3.

[0211] The connecting member 3 connects the first side member 22 and the second side member 16, thereby making it possible to improve the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2.

[0212] In some embodiments, the first side member 22 includes a first body 221 and a first connecting portion 222, the first connecting portion 222 is located outside the first body 221, and an upper end of the first body 221 is higher than the first connecting portion 222 in the height direction Z of the vehicle. The second side member 16 includes a second body 161 and a second connecting portion 162, the second connecting portion 162 is located inside the second body 161, the second body 161 is located above the first connecting portion 222, and the second connecting portion 162 is located above the first body 221. The second body 161 is detachably connected to the first connecting portion 222, and the second connecting portion 162 is detachably connected to the first body 221.

[0213] By connecting the first side member 22 and the second side member 16 at positions of different heights, it is possible to improve the connection strength between the first side member 22 and the second side member 16 and reduce the risk of relative displacement between the first side member 22 and the second side member 16. The first side member 22 and the second side member 16 overlap each other in the width direction Y, thereby restricting them from each other, thereby reducing the relative displacement between the first side member 22 and the second side member 16 in the width direction.

[0214] In some embodiments, the second body 161 and the first connecting portion 222 abut against each other from above and below. The abutting surfaces of the second body 161 and the first connecting portion 222 can seal the passenger compartment to some extent.

[0215] In some embodiments, a portion of the seal member 7 is sandwiched between the second connecting portion 162 and the first body 221 .

[0216] Exemplarily, the second body 161 and the first connecting portion 222 form a connection interface between the first side member 22 and the second side member 16. In other words, the connection member 3 connecting the second body 161 and the first connecting portion 222 needs to have a relatively large size and strength in order to increase the stability of the connection between the first side member 22 and the second side member 16.

[0217] The second connecting portion 162 and the first body 221 form a sealing interface between the first side member 22 and the second side member 16. Since the connection between the second connecting portion 162 and the first body 221 is mainly intended to compress the sealing member, the connection strength between the second connecting portion 162 and the first body 221 by the vehicle is relatively low, and the connecting member 3 connecting the second connecting portion 162 and the first body 221 needs to have a relatively large size and strength.

[0218] FIG. 13 is a schematic diagram of a further local cross-section of a vehicle according to some embodiments of the present application.

[0219] 13 , in some embodiments, the upper body 1 includes a rear floor assembly 13. The lower body 2 includes a fifth cross member 296, and the fifth cross member 296 and the rear floor assembly 13 are removably connected via a connecting member 3.

[0220] The connecting member 3 connects the fifth cross member 296 and the rear floor assembly 13, thereby making it possible to improve the connection strength and connection stability between the upper body 1 and the lower body 2.

[0221] In some embodiments, the fifth cross member 296 may be multiple.

[0222] In some embodiments, the fifth cross member 296 is connected to the rear side member assembly.

[0223] FIG. 14 is another schematic cross-sectional view of a vehicle according to some embodiments of the present application.

[0224] As shown in FIG. 14, in some embodiments, the upper body 1 includes a rear wheel house 17, and the rear wheel house 17 and the lower body 2 are removably connected via a connecting member 3.

[0225] 10 to 14, in the embodiment of the present application, in order to improve the connection strength and connection stability between the upper body 1 and the lower body 2, a connection member 3 is installed at a position that is susceptible to multiple forces.

[0226] 1 to 9, an embodiment of the present application provides a vehicle, which includes an upper body 1, a lower body 2, a plurality of connecting members 3, a sealing member 7, and a battery cell 8. The upper body 1 and the lower body 2 are detachably connected via the plurality of connecting members 3. The sealing member 7 is interposed between the upper body 1 and the lower body 2. The battery cell 8 is connected to the lower body 2.

[0227] The lower body 2 includes two first side members 22, two first cross members 23, and four torsion box assemblies 24. Each of the first cross members 23 is connected to the two first side members 22 via two torsion box assemblies 24. The upper body 1 includes a rear floor assembly 13, a cowl assembly 14, and two second side members 16, and each of the second side members 16 connects the rear floor assembly 13 and the cowl assembly 14. The two first side members 22 are detachably connected to the two second side members 16 via connecting members 3.

[0228] The first cross member 23 is removably connected to the upper body 1 via at least one connecting member 3. Each torsion box assembly 24 is removably connected to the upper body 1 via at least one connecting member 3.

[0229] The two first cross members 23, the two first side members 22 and the four torsion box assemblies 24 collectively form a first support surface 20a. The rear floor assembly 13, the cowl assembly 14 and the two second side members 16 collectively form a second support surface 10a. The seal member 7 is interposed between the first support surface 20a and the second support surface 10a.

[0230] The underbody 2 further includes a cover plate 25 and at least two second cross members 26, each of which connects two first side members 22. The first side members 22 and the second cross member 26 protrude from a lower surface of the cover plate 25. The at least two second cross members 26, the two first side members 22 and the cover plate 25 form a cartridge 27 having an opening therearound, the opening facing the cover plate 25, and the multiple battery cells 8 are housed in the cartridge 27 and connected to the cover plate 25. The vehicle further includes a guard 5, which is connected to the first side members 22 and covers the opening.

[0231] It should be mentioned that, unless there is a conflict, the embodiments and features in the embodiments in the present application can be combined with each other.

[0232] Finally, it should be noted that the above examples are only for illustrating the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the above examples, those skilled in the art may still modify the technical solutions described in the above examples or replace some of the technical features therein with equivalents, but it should be understood that such 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. [Explanation of symbols]

[0233] 1 Upper body 2 Lower body 3 Connection parts 4 Chassis 5. Guard 6a Nut 6b Nut 7 Sealing material 8 Battery Cells 9 Gasket 10a Second Support Surface 11 Upper body sheet metal parts 12 Front arm beam assembly 13 Rear Floor Assembly 14 Cowl assembly 15 Back Panel Assembly 16 Second side member 17 Rear wheel house 18 Connection plate 20 Framework 20a first support surface 20b Storage cavity 21 Lower body sheet metal member 22 First side member 23 First cross member 24 Torsion box assembly 25 Cover Plate 25a Bottom side 26 Second cross member 27 Cartridge 28 Third cross member 131 Sixth Cross Member 141 Fourth Cross Member 161 Second Body 162 Second Connection 221 First Body 222 First Connection 291 Front side member assembly 292 Front collision prevention beam 293 Rear side member assembly 294 Rear collision prevention beam 295 Shock absorber tower 296 Fifth Cross Member H1 through hole H2 screw hole S Crew cabin X Longitudinal direction Y Width direction Z height direction

Claims

1. A chassis of a vehicle, an underbody including a framework having a receiving cavity; a plurality of battery cells disposed in the receiving cavity and connected to the framework.

2. 2. The chassis of claim 1, wherein the framework includes a first side member and a first cross member, the first side member extending along a longitudinal direction of the vehicle and the first cross member extending along a width direction of the vehicle, the first side member being connected to the first cross member.

3. 3. The chassis of claim 2, wherein the first side member is a rocker of the underbody.

4. The chassis according to claim 2 or 3, further comprising a cover plate, the cover plate being positioned above the plurality of battery cells and connected to the first side member and the first cross member.

5. 5. The chassis of claim 4, wherein the cover plate is used as a floor of a passenger compartment of a vehicle.

6. The chassis of claim 4 or 5, wherein the plurality of battery cells are connected to the cover plate.

7. The chassis of claim 6 , wherein the plurality of battery cells are adhered to the cover plate.

8. 8. The chassis of claim 4, further comprising a third cross member, the third cross member being located above the cover plate and connected to the first side member.

9. 9. The chassis of claim 8, wherein the third cross member is used for mounting a vehicle seat.

10. The chassis of claim 8 or 9, wherein the third cross member is welded to the cover plate.

11. 11. The chassis of claim 2, wherein the framework includes two of the first side members and two of the first cross members, the two first side members being located on both sides of the plurality of battery cells along the width direction, the two first cross members being located on both sides of the plurality of battery cells along the longitudinal direction, and each of the first cross members being connected to the two first side members.

12. 12. The chassis of claim 11, wherein the framework further includes four torsion box assemblies, and each of the first cross members is connected to two of the first side members via two of the torsion box assemblies, respectively.

13. 13. The chassis of claim 2, wherein the framework further includes a second cross member mounted in the receiving cavity, the second cross member and the first cross member being spaced apart along the longitudinal direction, and the second cross member being connected to the first side member.

14. 14. The chassis of claim 13, wherein the second cross members are multiple, the multiple second cross members are spaced apart along the longitudinal direction, and the battery cells are disposed between adjacent second cross members.

15. The framework further includes a guard, the guard being positioned below the plurality of battery cells and covering the accommodating cavity from below; 15. The chassis of claim 2, wherein the guard is fixedly connected to the first side member and the first cross member, or the guard is removably connected to the first cross member and the first side member.

16. 16. The chassis of claim 1, further comprising a front side member assembly and a front collision prevention beam, the front side member assembly being fixedly connected to the framework or removably connected to the framework, and the front collision prevention beam being fixedly connected to the front side member assembly or removably connected to the front side member assembly.

17. 17. The chassis of claim 1, further comprising a rear side member assembly and a rear collision prevention beam, the rear side member assembly being fixedly connected to the framework or removably connected to the framework, and the rear collision prevention beam being fixedly connected to the rear side member assembly or removably connected to the rear side member assembly.

18. A vehicle, The upper body, 18. A vehicle comprising a chassis according to any one of claims 1 to 17, wherein the framework is removably connected to the upper body.

19. 20. The chassis of claim 18, wherein the underbody is configured to be connected to the upper body after the battery cells are attached to the framework.

20. 20. The vehicle according to claim 18 or 19, further comprising a connecting member, wherein the framework and the upper body are removably connected via the connecting member.

21. 21. The vehicle of claim 20, wherein the connecting member includes a bolt.

22. At least a through hole is provided in one of the upper body and the framework, and at least a screw hole is provided in the other of the upper body and the framework; 22. The vehicle of claim 21, wherein the bolt passes through the through hole and is threadedly connected to a hole wall of the threaded hole.

23. 23. The vehicle according to claim 21 or 22, wherein the bolt extends along a height direction of the vehicle.

24. 24. The vehicle of any one of claims 18 to 23, wherein the upper body includes a front arm beam assembly, and the lower body includes a shock absorber tower, and the front arm beam assembly and the shock absorber tower are removably connected via a connecting member.

25. the framework includes a first cross member, the upper body includes a cowl assembly, the cowl assembly includes a fourth cross member; 25. The vehicle of claim 18, wherein the first cross member and the fourth cross member are removably connected via a connecting member.

26. 26. The vehicle of claim 18, wherein the framework includes a first side member and the upper body includes a second side member, the first side member and the second side member being removably connected via a connecting member.

27. the first side member includes a first body and a first connecting portion, the first connecting portion is located outside the first body, and an upper end of the first body is higher than the first connecting portion in a height direction of the vehicle; the second side member includes a second body and a second connecting portion, the second connecting portion is located inside the second body, the second body is located above the first connecting portion, and the second connecting portion is located above the first body; 27. The vehicle of claim 26, wherein the second body is removably connected to the first connection portion and the second connection portion is removably connected to the first body.

28. 28. The vehicle of claim 27, further comprising a seal member, a portion of the seal member being sandwiched between the second connection portion and the first body.

29. 29. The vehicle of any one of claims 18 to 28, wherein the upper body includes a rear floor assembly and the lower body includes a fifth cross member, the fifth cross member and the rear floor assembly being removably connected via a connecting member.

30. 24. The vehicle of claim 18, further comprising a seal member, said seal member being interposed between said upper body and said framework.

31. 31. The vehicle of claim 30, wherein the seal member surrounds a passenger compartment of the vehicle.

32. The framework includes two first side members, two first cross members, and four torsion box assemblies, each of the first cross members being connected to two of the first side members via two of the torsion box assemblies, the two first cross members, the two first side members and the four torsion box assemblies collectively define a first support surface; The upper body includes a fourth cross member, a sixth cross member, two second side members, and four connecting plates, each of the second side members being connected to the fourth cross member and the sixth cross member via two of the connecting plates, respectively; the fourth cross member, the sixth cross member, the two second side members and the four connecting plates collectively form a second support surface; 32. The vehicle of claim 30 or 31, wherein the seal member is sandwiched between the first support surface and the second support surface.

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