Vehicle and chassis thereof

Abstract

A vehicle chassis (4) comprises a lower vehicle body (2) and a plurality of single batteries (8), the lower vehicle body (2) comprises a frame (20), the frame (20) is provided with a containing cavity (20b), the single batteries (8) are arranged in the containing cavity (20b) and connected to the frame (20), and the frame of the chassis is detachably connected to an upper vehicle body. The invention further discloses a vehicle which comprises the upper vehicle body (1) and the chassis (4), the frame of the lower vehicle body of the vehicle can be used as a battery box at the same time, so that partial redundant structures of a traditional battery are reduced, and the upper vehicle body and the chassis are detachably connected and can be replaced according to requirements.

Description

Vehicles and their chassis

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to international patent application PCT / CN2023 / 090261 filed on April 24, 2023, entitled “Vehicle”, and international patent application PCT / CN2023 / 090254 filed on April 24, 2023, entitled “Underbody, Chassis and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of vehicle technology, and more particularly, to a vehicle and a chassis thereof. Background Art

[0004] With the rapid development of automation and intelligent technology, new energy vehicles are becoming increasingly popular and popular among the public. How to improve vehicle range and reduce costs is a research direction in vehicle technology.

[0005] Summary of the Invention

[0006] The present application provides a vehicle and a chassis thereof, which can increase the vehicle's cruising range and reduce costs.

[0007] In a first aspect, an embodiment of the present application provides a vehicle chassis, comprising a lower body and a plurality of battery cells. The lower body includes a frame having a receiving cavity. A plurality of battery cells are disposed in the receiving cavity and connected to the frame. The battery cells are mounted in the receiving cavity of the frame, so that the frame of the lower body can also function as a battery box, thereby reducing some of the redundant structure of traditional batteries, improving the vehicle's cruising range, and achieving the effect of reducing weight and cost. The frame protects the battery cells, reduces the risk of external impact on the battery cells, and improves reliability.

[0008] In some embodiments, the frame includes a first longitudinal beam and a first transverse beam. The first longitudinal beam extends along the length of the vehicle, the first transverse beam extends along the width of the vehicle, and the first longitudinal beam is connected to the first transverse beam. Using the transverse and longitudinal beams of the lower vehicle body as battery housings can reduce some of the redundant structure of traditional batteries, increase the vehicle's range, and achieve weight and cost reduction effects.

[0009] In some embodiments, the first longitudinal beam is a rocker beam of the lower vehicle body.

[0010] In some embodiments, the chassis further includes a cover plate located above the plurality of battery cells and connected to the first longitudinal beam and the first transverse beam. The cover plate can protect the battery cells from above and reduce the impact on the battery cells when stepped on by passengers.

[0011] In some embodiments, the cover plate is used as the floor of the passenger compartment of the vehicle. The cover plate can also be used as the floor, thereby saving vehicle components, increasing the vehicle's range, and achieving the effects of weight reduction and cost reduction.

[0012] In some embodiments, a plurality of battery cells are connected to the cover plate, and the cover plate can support the plurality of battery cells.

[0013] In some embodiments, multiple battery cells are bonded to the cover plate. Bonding the battery cells to the cover plate can also improve the overall rigidity of the cover plate and reduce deformation of the cover plate when the vehicle crashes.

[0014] In some embodiments, the chassis further includes a third cross member disposed above the cover plate and connected to the first longitudinal member. The third cross member improves the torsional rigidity of the lower vehicle body, reduces deformation of the first longitudinal member and cover plate during a side impact, reduces stress on the battery cells, and improves reliability.

[0015] In some embodiments, the third crossbeam is used to install the vehicle's seats to improve the integration of the chassis, reduce the number of components, and improve the vehicle's endurance.

[0016] In some embodiments, the third crossbeam is welded to the cover plate. Welding the third crossbeam to the cover plate can improve the integration of the lower body and simplify the structure of the upper body.

[0017] In some embodiments, the frame includes two first longitudinal beams and two first transverse beams, the two first longitudinal beams are respectively located on both sides of the multiple battery cells along the width direction, the two first transverse beams are respectively located on both sides of the multiple battery cells along the length direction, and each first transverse beam is connected to the two first longitudinal beams.

[0018] In some embodiments, the frame further includes four torsion box assemblies, with each first crossbeam being connected to two first longitudinal beams via two torsion box assemblies. The torsion box assemblies can achieve relative fixation between the first crossbeams and the first longitudinal beams, thereby improving the continuity of force transmission between the first crossbeams and the first longitudinal beams.

[0019] In some embodiments, the frame further includes a second crossbeam disposed within the accommodating cavity, the second crossbeam being spaced apart from the first crossbeam along its length and connected to the first longitudinal beam. The second crossbeam can reinforce the frame's strength, reducing deformation when the vehicle is subjected to external impact, thereby lowering the risk of battery cell explosion under pressure.

[0020] In some embodiments, there are multiple second cross beams, which are spaced apart along the length direction; battery cells are arranged between adjacent second cross beams. The second cross beams can protect the battery cells from both sides.

[0021] In some embodiments, the frame further includes a protective plate positioned below the plurality of battery cells and covering the storage cavity from below. The protective plate is fixedly connected to the first longitudinal beam and the first transverse beam, or detachably connected to the first transverse beam and the first longitudinal beam. The protective plate seals the storage cavity, reducing the impact of external impurities on the battery cells and improving the cycle life of the battery cells.

[0022] In some embodiments, the chassis further includes a front longitudinal beam assembly and a front anti-collision beam, the front longitudinal beam assembly is fixedly connected to the frame or detachably connected to the frame, and the front anti-collision beam is fixedly connected to the front longitudinal beam assembly or detachably connected to the front longitudinal beam assembly.

[0023] In some embodiments, the chassis further includes a rear longitudinal beam assembly and a rear anti-collision beam, the rear longitudinal beam assembly is fixedly connected to the frame or detachably connected to the frame, and the rear anti-collision beam is fixedly connected to the rear longitudinal beam assembly or detachably connected to the rear longitudinal beam assembly.

[0024] In a second aspect, embodiments of the present application provide a vehicle comprising an upper body and a chassis according to any embodiment of the first aspect. The chassis frame is detachably connected to the upper body. The upper body and chassis are detachably connected, and disassembly and assembly enable separation and decoupling of the upper body and chassis, as well as connection and separation. This allows for independent development of the upper body and chassis, allowing them to be replaced as needed, shortening R&D cycles and reducing costs.

[0025] In some embodiments, the lower body is configured to be connected to the upper body after the battery cells are mounted to the frame.

[0026] In some embodiments, the vehicle further includes a connector, through which the frame and the upper body are detachably connected. The upper body and chassis are detachably connected via the connector. By disassembling and assembling the connector, the upper body and chassis can be separated, decoupled, and connected, enabling independent development of the upper body and chassis. This allows them to be swapped out as needed, shortening R&D cycles and reducing costs. A single chassis can be paired with upper bodies of varying shapes, satisfying user demands for diverse styling.

[0027] In some embodiments, the connecting members include bolts. Bolts are highly standardized and easily replaceable. The bolted connection facilitates assembly and disassembly, thereby improving assembly efficiency of the upper and lower vehicle bodies.

[0028] In some embodiments, one of the upper body and the frame is provided with at least one through-hole, and the other is provided with at least one threaded hole. Bolts pass through the through-holes and are threadedly engaged with the walls of the threaded holes. Providing both the through-holes and the threaded holes facilitates detachable bolt connection between the upper body and the frame.

[0029] In some embodiments, the bolts extend in the height direction of the vehicle. The installation direction of the bolts can be the height direction of the vehicle, which makes it easy to disassemble and assemble the bolts.

[0030] In some embodiments, the upper vehicle body includes a front arm beam assembly, and the lower vehicle body includes a shock tower. The front arm beam assembly and the shock tower are detachably connected via a connector. The connector connects the front arm beam assembly and the shock tower, thereby improving the connection strength and stability between the upper and lower vehicle bodies.

[0031] In some embodiments, the frame includes a first crossbeam, the upper body includes a dash panel assembly, and the dash panel assembly includes a fourth crossbeam. The first and fourth crossbeams are detachably connected via a connector. The connector connects the first and fourth crossbeams, thereby improving the strength and stability of the connection between the upper and lower bodies.

[0032] In some embodiments, the frame includes a first longitudinal beam, the upper body includes a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are detachably connected via a connector. The connector connects the first longitudinal beam and the second longitudinal beam to improve the connection strength and stability between the upper body and the lower body.

[0033] In some embodiments, the first longitudinal beam includes a first main body and a first connecting portion, the first connecting portion is located on the outside of the first main body, and the upper end of the first main body is higher than the first connecting portion in the height direction of the vehicle. The second longitudinal beam includes a second main body and a second connecting portion, the second connecting portion is located on the inside of the second main body, the second main body is located on the upper side of the first connecting portion, and the second connecting portion is located on the upper side of the first main body. The second main body is detachably connected to the first connecting portion, and the second connecting portion is detachably connected to the first main body. The first longitudinal beam and the second longitudinal beam are connected at positions of different heights, which can improve the connection strength of the first longitudinal beam and the second longitudinal beam and reduce the risk of relative displacement of the first longitudinal beam and the second longitudinal beam. The first longitudinal beam and the second longitudinal beam overlap in the width direction, thereby limiting each other and reducing the relative displacement of the first longitudinal beam and the second longitudinal beam in the width direction.

[0034] In some embodiments, the vehicle further includes a sealing member, a portion of the sealing member being clamped between the second connecting portion and the first body.

[0035] In some embodiments, the upper body includes a rear floor assembly; the lower body includes a fifth cross member, and the fifth cross member and the rear floor assembly are detachably connected via a connector. The connector connects the fifth cross member and the rear floor assembly, thereby improving the connection strength and stability between the upper and lower bodies.

[0036] In some embodiments, the vehicle further includes a sealing member disposed between the upper body and the frame. The sealing member seals the upper and lower bodies, reduces the amount of impurities that enter the passenger compartment, improves the passenger experience, and enhances vehicle reliability.

[0037] In some embodiments, the sealing member surrounds the passenger compartment of the vehicle. The annular sealing member can increase the sealing area, isolate the passenger compartment from the external environment, reduce the amount of foreign matter that enters the passenger compartment through the gap between the upper and lower bodies, improve the passenger experience, and enhance the reliability of the vehicle.

[0038] In some embodiments, the frame includes two first longitudinal beams, two first cross beams, and four torsion box assemblies, each of which is connected to the two first longitudinal beams via two torsion box assemblies. The two first cross beams, the two first longitudinal beams, and the four torsion box assemblies collectively form a first support surface. The upper body includes a fourth cross beam, a sixth cross beam, two second longitudinal beams, and four connecting plates, each of which is connected to the fourth and sixth cross beams via two connecting plates. The fourth cross beam, the sixth cross beam, the two second longitudinal beams, and the four connecting plates collectively form a second support surface. The sealing component is clamped between the first support surface and the second support surface. The first support surface and the second support surface can provide stable support for the sealing component, thereby improving the airtightness and watertightness of the passenger compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] FIG1 is an exploded schematic diagram of a vehicle provided by some embodiments of the present application;

[0041] FIG2 is a partial cross-sectional schematic diagram of the vehicle shown in FIG1 ;

[0042] FIG3 is a schematic structural diagram of a lower body of a vehicle provided in some embodiments of the present application;

[0043] FIG4 is an enlarged schematic diagram of FIG3 at the circle A;

[0044] FIG5 is a partial bottom view of the lower body of a vehicle provided by some embodiments of the present application;

[0045] FIG6 is a partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0046] FIG7 is another partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0047] FIG8 is a schematic structural diagram of an upper body of a vehicle provided in some embodiments of the present application;

[0048] FIG9 is a schematic diagram of a partial structure of an upper body of a vehicle provided in some embodiments of the present application;

[0049] FIG10 is a partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0050] FIG11 is another partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0051] FIG12 is another partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0052] FIG13 is another partial cross-sectional schematic diagram of a vehicle provided by some embodiments of the present application;

[0053] FIG14 is another schematic partial cross-sectional view of a vehicle provided in some embodiments of the present application.

[0054] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0060] 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.

[0061] The term "plurality" used in this application refers to two or more (including two).

[0062] In the related art, multiple battery cells are pre-installed in a box to form a battery pack, which is then mounted on the vehicle body. However, the box takes up weight and space in the vehicle, affecting the vehicle's range.

[0063] In view of this, an embodiment of the present application provides a technical solution, which integrates battery cells directly into the chassis to eliminate the need for a traditional battery box, thereby increasing the battery capacity and improving the vehicle's endurance.

[0064] The technical solutions described in the embodiments of this application are applicable to vehicles. The vehicles can be fuel vehicles, gas vehicles, or new energy vehicles. The new energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles.

[0065] Figure 1 is an exploded schematic diagram of a vehicle provided in some embodiments of the present application; Figure 2 is a partial cross-sectional schematic diagram of the vehicle shown in Figure 1; Figure 3 is a structural schematic diagram of the lower body of a vehicle provided in some embodiments of the present application; Figure 4 is an enlarged schematic diagram of circle A in Figure 3; Figure 5 is a partial bottom-up schematic diagram of the lower body of a vehicle provided in some embodiments of the present application; Figure 6 is a partial cross-sectional schematic diagram of a vehicle provided in some embodiments of the present application; Figure 7 is another partial cross-sectional schematic diagram of a vehicle provided in some embodiments of the present application.

[0066] 1 to 7 , an embodiment of the present application provides a vehicle including an upper body 1 and a chassis 4 .

[0067] In some embodiments, the chassis 4 includes a lower body 2 and a plurality of battery cells 8. The battery cells 8 are connected to the lower body 2.

[0068] In some embodiments, the lower vehicle body 2 includes a frame 20 having a receiving cavity 20 b . A plurality of battery cells 8 are disposed in the receiving cavity 20 b and connected to the frame 20 .

[0069] The battery cell 8 is the smallest unit capable of independent charge and discharge. 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 present embodiment of the application does not limit this. The battery cell 8 may be cylindrical, flat, rectangular, or in other shapes, and the present embodiment of the application does not limit this. The battery cell 8 may be cylindrical, prismatic, or pouch-type.

[0070] By installing battery cells 8 in accommodating cavity 20b of frame 20, frame 20 of lower body 2 doubles as a battery enclosure, reducing some of the redundant structure of traditional batteries, increasing vehicle range, and achieving weight and cost reductions. Frame 20 protects battery cells 8, reducing the risk of external impact on battery cells 8 and improving reliability.

[0071] In some embodiments, the chassis 4 may further include a drive system and a chassis system, wherein the chassis system includes a transmission system, a travel system, a steering system, and a braking system. The drive system may include a motor.

[0072] In the embodiment of the present application, the battery cells 8 are integrated into the chassis 4 to achieve CTC (Cell to Chassis) battery-chassis integration.

[0073] The embodiment of the present application integrates the battery system, drive system and chassis system together, reducing the number of components, saving space, improving structural efficiency, and significantly reducing vehicle weight and increasing battery life.

[0074] The chassis 4 of the present embodiment is highly adaptable, offering improved compatibility with the vehicle and enabling rapid and flexible mass production. Its high degree of integration and modularity allows for cross-platform adaptation to future vehicle models of all levels and types. Furthermore, this high degree of integration and modularity simplifies the number of parts and production steps, reducing costs while increasing battery capacity and range.

[0075] By setting up an independent lower body 2, the complete chassis system, battery system and drive system can be integrated on the lower body 2, so that the entire chassis 4 can be designed and operated independently of the upper body 1, and the vehicle drive part and the passenger compartment S can be developed and assembled independently of each other.

[0076] In some embodiments, the frame 20 includes a first longitudinal beam 22 and a first cross beam 23. The first longitudinal beam 22 extends along the length direction X of the vehicle, and the first cross beam 23 extends along the width direction Y of the vehicle. The first longitudinal beam 22 is connected to the first cross beam 23. Optionally, the length direction X, the width direction Y, and the height direction Z are perpendicular to each other. For example, the length direction X is parallel to the arrangement direction of the front and rear ends of the vehicle.

[0077] The first longitudinal beam 22 may be directly connected to the first transverse beam 23 , or may be indirectly connected to the first transverse beam 23 through other components.

[0078] By using the transverse and longitudinal beams of the lower body 2 as the battery box, some redundant structures of the traditional battery can be reduced, the vehicle's cruising range can be improved, and the weight and cost can be reduced.

[0079] In some embodiments, the first longitudinal beam 22 is a rocker beam of the lower vehicle body 2 .

[0080] In some embodiments, the frame 20 includes two first longitudinal beams 22 and two first transverse beams 23. The two first longitudinal beams 22 are respectively located on both sides of the multiple battery cells 8 along the width direction Y, and the two first transverse beams 23 are respectively located on both sides of the multiple battery cells 8 along the length direction X. Each first transverse beam 23 is connected to the two first longitudinal beams 22.

[0081] For example, the two first longitudinal beams 22 are spaced apart along the width direction Y of the vehicle, and the two first cross beams 23 are spaced apart along the length direction X of the vehicle. The first longitudinal beam 22 connects the two first cross beams 23 .

[0082] In some embodiments, the frame 20 further includes four torsion box assemblies 24 , and each first cross beam 23 is connected to two first longitudinal beams 22 via two torsion box assemblies 24 .

[0083] The torsion box assembly 24 can achieve relative fixation between the first cross beam 23 and the first longitudinal beam 22 , thereby improving the continuity of force transmission between the first cross beam 23 and the first longitudinal beam 22 .

[0084] In some embodiments, the torque box assembly 24 may include a torque box and other connecting components disposed on the torque box, such as standard parts.

[0085] In some embodiments, the two torque box assemblies 24 near the front of the vehicle may be referred to as front torque box assemblies, and the two torque box assemblies 24 near the rear of the vehicle may be referred to as rear torque box assemblies.

[0086] In some embodiments, the chassis 4 further includes a cover plate 25 , which is located on the upper side of the plurality of battery cells 8 and connected to the first longitudinal beam 22 and the first transverse beam 23 .

[0087] The cover plate 25 can protect the battery cells 8 from the upper side, thereby reducing the impact on the battery cells 8 when a passenger steps on them.

[0088] In some embodiments, the cover plate 25 is connected between the two first longitudinal beams 22 .

[0089] In some embodiments, the cover plate 25 is used as the floor of the passenger compartment of the vehicle. The cover plate 25 can also be used as the floor, thereby saving vehicle components, increasing the vehicle's cruising range, and achieving the effect of reducing weight and cost.

[0090] In some embodiments, a plurality of battery cells 8 are connected to the cover plate 25. The cover plate 25 can support the plurality of battery cells 8.

[0091] In some embodiments, multiple battery cells 8 are bonded to the cover plate 25. Bonding the battery cells 8 to the cover plate 25 can also improve the overall rigidity of the cover plate 25 and reduce deformation of the cover plate 25 when the vehicle crashes.

[0092] In some embodiments, the cover plate 25 is further connected to the two first beams 23 .

[0093] In some embodiments, the frame 20 further includes a second crossbeam 26 disposed in the accommodating cavity 20 b . The second crossbeam 26 and the first crossbeam 23 are spaced apart along the length direction X. The second crossbeam 26 is connected to the first longitudinal beam 22 .

[0094] There may be one or more second cross beams 26 .

[0095] The second cross beam 26 can strengthen the strength of the frame 20, reduce the deformation of the frame 20 when the vehicle is subjected to external impact, and reduce the risk of battery cells being compressed and exploded.

[0096] In some embodiments, the chassis 4 includes a plurality of second cross beams 26 , which are spaced apart along the length direction X. Battery cells 8 are arranged between adjacent second cross beams 26 .

[0097] The second cross member 26 can protect the battery cell 8 from both sides.

[0098] In some embodiments, each second cross beam 26 connects two first longitudinal beams 22 .

[0099] In some embodiments, the first longitudinal beam 22 and the second transverse beam 26 protrude from the lower surface 25 a of the cover plate 25 .

[0100] In some embodiments, at least two second transverse beams 26 , two first longitudinal beams 22 and the cover plate 25 enclose a receiving compartment 27 having an opening, the opening being opposite to the cover plate 25 , and a plurality of battery cells 8 are received in the receiving compartment 27 .

[0101] There can be one or more accommodating chambers 27 .

[0102] The first longitudinal beam 22 and the second transverse beam 26 form a frame structure surrounding the battery cell 8 . The frame structure can protect the battery cell 8 , reduce the risk of the battery cell 8 being subjected to external impact, and improve reliability.

[0103] In some embodiments, there are three second cross beams 26 . The accommodating cavity includes two accommodating compartments 27 .

[0104] The three second transverse beams 26 , the two first longitudinal beams 22 and the cover plate 25 can enclose and form two receiving compartments 27 .

[0105] The three second cross beams 26 can improve the overall strength of the lower vehicle body 2, reduce the deformation of the first longitudinal beam 22 when the vehicle is hit from the side, reduce the pressure on the battery cells 8, and improve reliability.

[0106] In some embodiments, the first longitudinal beam 22 and the second transverse beam 26 may be connected by CMT (Cold Meta Transfer) welding, rotary tapping rivets (FDS), self-piercing rivets (SPR), or the like.

[0107] In some embodiments, the frame 20 further includes a protective plate 5, which is located below the battery cells 8 and covers the accommodating cavity 20b from below. The protective plate 5 can seal the accommodating cavity 20b, reduce external impurities that impact the battery cells 8, and improve the cycle life of the battery cells.

[0108] In some embodiments, the protective plate 5 is fixedly connected to the first longitudinal beam 22 .

[0109] In some embodiments, the protective plate 5 is detachably connected to the first longitudinal beam 22, thereby facilitating maintenance of the battery cells 8. For example, the protective plate 5 can be connected to the first longitudinal beam 22 by bolts.

[0110] In some embodiments, the protective plate 5 is fixedly connected to the first crossbeam 23 .

[0111] In some embodiments, the protective plate 5 is detachably connected to the first crossbeam 23, thereby facilitating maintenance of the battery cells 8. For example, the protective plate 5 can be connected to the first crossbeam 23 by bolts.

[0112] In some embodiments, a sealing gasket 9 is provided between the protective plate 5 and the first longitudinal beam 22. Optionally, the sealing gasket 9 can be made of foam. Alternatively, a sealant can also be provided between the protective plate 5 and the first longitudinal beam 22.

[0113] In some embodiments, the protective plate 5 is connected to the second cross beam 26. Optionally, the protective plate 5 is connected to the second cross beam 26 by bolts.

[0114] In some alternative embodiments, the second cross beam 26 may be omitted, and the first cross beam 23, the first longitudinal beam 22 and the cover plate 25 may be used to enclose and form a receiving chamber 27. The receiving cavity includes the receiving chamber 27.

[0115] In some embodiments, the chassis 4 further includes a third cross beam 28 , which is disposed on an upper side of the cover plate 25 and connected to the first longitudinal beam 22 .

[0116] The third cross member 28 can improve the torsional rigidity of the lower vehicle body 2, reduce the deformation of the first longitudinal member 22 and the cover plate 25 when the vehicle is hit from the side, reduce the pressure on the battery cells 8, and improve reliability.

[0117] In some embodiments, the third cross beam 28 is used to install vehicle seats to improve the integration of the chassis, reduce the number of components, and improve the vehicle's endurance.

[0118] In some embodiments, the third cross beam 28 is welded to the cover plate 25. Welding the third cross beam 28 to the cover plate 25 can improve the integration of the lower body 2 and simplify the structure of the upper body 1.

[0119] In some embodiments, both ends of the third cross beam 28 are connected to the two first longitudinal beams 22 respectively.

[0120] In some embodiments, the lower body 2 includes a front longitudinal beam assembly 291. The front longitudinal beam assembly 291 can be used to mount the front suspension of the chassis 4. For example, the front longitudinal beam assembly 291 can include a front longitudinal beam, a reinforcement plate, standard components, and other components. The reinforcement plate and standard components can be attached to the front longitudinal beam. Alternatively, the standard components can include bolts or studs.

[0121] The front longitudinal beam can collapse and absorb energy in the event of a serious collision, thereby protecting the lives of passengers in the car.

[0122] In some embodiments, the front longitudinal beam assembly 291 is fixedly connected to the frame 20 .

[0123] In some embodiments, the front longitudinal beam assembly 291 is detachably connected to the frame 20. The front longitudinal beam assembly 291 can be assembled independently of the frame 20, or the front longitudinal beam assembly 291 can be connected to the frame 20 after the battery cells 8 are installed on the frame 20. Optionally, the front longitudinal beam assembly 291 is connected to the frame 20 by bolts.

[0124] In some embodiments, the front longitudinal beam assembly 291 may be connected to the front torque box assembly.

[0125] In some embodiments, there are two front longitudinal beam assemblies 291 , and the two front longitudinal beam assemblies 291 are respectively connected to the two front torque box assemblies.

[0126] In some embodiments, the lower body 2 further includes a front anti-collision beam 292 , which is fixedly connected to the front longitudinal beam assembly 291 .

[0127] In some embodiments, the front anti-collision beam 292 may be detachably connected to the front longitudinal beam assembly 291 or may be non-detachably connected.

[0128] In some embodiments, the front anti-collision beam 292 is detachably connected to the front longitudinal beam assembly 291. Alternatively, the front anti-collision beam 292 is connected to the front longitudinal beam assembly 291 by bolts. The front anti-collision beam 292 can be assembled independently of other structures of the lower body 2.

[0129] In some embodiments, the lower body 2 further includes a rear longitudinal beam assembly 293. The rear longitudinal beam assembly 293 can be used to install the rear suspension of the chassis 4.

[0130] In some embodiments, the rear longitudinal beam assembly 293 may include a rear longitudinal beam and a connecting component disposed on the rear longitudinal beam, such as a standard component.

[0131] The rear longitudinal beam can collapse and absorb energy in the event of a serious collision, thereby protecting the lives of passengers in the car.

[0132] In some embodiments, the rear longitudinal beam assembly 293 is fixedly connected to the frame 20 .

[0133] In some embodiments, the rear longitudinal beam assembly 293 is detachably connected to the frame 20. The rear longitudinal beam assembly 293 can be assembled independently of the frame 20, or the rear longitudinal beam assembly 293 can be connected to the frame 20 after the battery cells 8 are installed in the frame 20. Alternatively, the rear longitudinal beam assembly 293 is connected to the frame 20 by bolts.

[0134] In some embodiments, the rear longitudinal beam assembly 293 may be connected to the rear torsion box assembly.

[0135] In some embodiments, there are two rear longitudinal beam assemblies 293 , and the two rear longitudinal beam assemblies 293 are respectively connected to the two rear torsion box assemblies.

[0136] In some embodiments, the lower body 2 further includes a rear anti-collision beam 294, which is connected to the rear longitudinal beam assembly 293. Optionally, the rear anti-collision beam 294 is fixedly connected to the rear longitudinal beam assembly 293.

[0137] In some embodiments, the rear anti-collision beam 294 is detachably connected to the rear longitudinal beam assembly 293. For example, the rear anti-collision beam 294 is connected to the rear longitudinal beam assembly 293 by bolts. The rear anti-collision beam 294 can be assembled independently of other structures of the lower body 2.

[0138] In some embodiments, the frame 20 is detachably connected to the upper body 1. The upper body 1 and the chassis 4 are detachably connected. By disassembly and assembly, the upper body 1 and the chassis 4 can be separated, decoupled, and connected, thereby enabling independent development of the upper body 1 and the chassis 4. The upper body 1 and the chassis 4 can be replaced as needed, shortening the R&D cycle and reducing costs.

[0139] In some embodiments, the lower body 2 is configured to be connected to the upper body 1 after the battery cells 8 are mounted on the frame 20 .

[0140] In some embodiments, the vehicle further includes a connector 3 , and the frame 20 and the upper body 1 are detachably connected via the connector 3 .

[0141] The type of connector 3 can be flexibly selected. In some examples, the connector 3 may include a fastener; alternatively, the fastener may include at least one of a bolt, a nut, a stud, a screw, and a pin. In other examples, the connector 3 may include a snap fastener.

[0142] The number of the connecting member 3 may be one or more.

[0143] In some examples, there are multiple connectors 3. The multiple connectors 3 can be made of the same component, for example, all of the multiple connectors 3 are bolts. Alternatively, the multiple connectors 3 can also be made of different components, for example, some of the connectors 3 are bolts and some of the connectors 3 are screws.

[0144] By providing the connecting member 3, the upper body 1 and the chassis 4 are separated into two independent assemblies. For example, the upper body 1 and the lower body 2 are two independent assemblies.

[0145] In an embodiment of the present application, the upper body 1 and the chassis 4 are detachably connected via a connector 3. By disassembling and assembling the connector 3, the upper body 1 and the chassis 4 can be separated, decoupled, and connected, thereby enabling independent development of the upper body 1 and the chassis 4. This allows the upper body 1 and the chassis 4 to be replaced as needed, shortening the R&D cycle and reducing costs.

[0146] One chassis 4 can match upper bodies 1 of different shapes to meet users' demands for diverse shapes.

[0147] In some embodiments, the upper body 1 and the lower body 2 are detachably connected via a connector 3. By disassembling and assembling the connector 3, the upper body 1 and the lower body 2 can be separated, decoupled, and reconnected. This allows for independent development of the upper and lower bodies 1 and 2, allowing them to be replaced as needed, shortening R&D cycles and reducing costs. A single lower body 2 can be paired with upper bodies 1 of varying shapes, satisfying user demands for diverse designs.

[0148] In some embodiments, there may be multiple connectors 3. The positions of the multiple connectors 3 may be determined based on the connection strength requirements of the upper body 1 and the chassis 4. Alternatively, the positions of the multiple connectors 3 may be determined based on the connection strength requirements of the upper body 1 and the lower body 2.

[0149] In some embodiments, the connection member 3 comprises a bolt.

[0150] Exemplarily, there are multiple connecting members 3, and at least some of the multiple connecting members 3 are bolts.

[0151] The bolts can be threadedly connected to the upper body 1 or to the lower body 2 of the chassis 4 .

[0152] The bolts are highly standardized and easy to replace. The bolt connection method is easy to disassemble and assemble, which helps to improve the assembly efficiency of the upper body 1 and the lower body 2.

[0153] Compared with the upper body 1 and the chassis 4 connected by welding, rotary tapping riveting (FDS), self-piercing riveting (SPR), bonding and other processes, the upper body 1 and the chassis 4 are connected by bolts, which can achieve the decoupling of the physical structures of the upper body 1 and the lower body 2.

[0154] In some embodiments, one of the upper body 1 and the lower body 2 is provided with at least one through-hole H1, and the other is provided with at least one threaded hole H2. Bolts pass through through-hole H1 and are threadedly engaged with the wall of threaded hole H2. The provision of through-hole H1 and threaded hole H2 facilitates the removable connection of the upper body 1 and the lower body 2 by bolts.

[0155] In some embodiments, one of the upper body 1 and the frame 20 is provided with at least a through hole H1, and the other is provided with at least a threaded hole H2. A bolt passes through the through hole H1 and is threadedly connected to the wall of the threaded hole H2.

[0156] In some examples, the upper body 1 is provided with a through hole H1, and the frame 20 is provided with a threaded hole H2; in other examples, the frame 20 is provided with a through hole H1, and the upper body 1 is provided with a threaded hole H2; in still other examples, the upper body 1 is provided with a through hole H1 and a threaded hole H2, and the frame 20 is also provided with a threaded hole H2 and a through hole H1; optionally, some bolts pass through the through hole H1 of the upper body 1 and are threadedly connected to the hole wall of the threaded hole H2 of the frame 20, and other bolts pass through the through hole H1 of the frame 20 and are threadedly connected to the hole wall of the threaded hole H2 of the upper body 1.

[0157] By providing the through hole H1 and the threaded hole H2 , the upper body 1 and the frame 20 can be detachably connected by bolts.

[0158] In some embodiments, the bolt extends in a height direction Z of the vehicle.

[0159] The height direction Z of the vehicle may be the height direction Z of the vehicle in a driving state.

[0160] Exemplarily, the central axis of the bolt, the central axis of the through hole H1 and the central axis of the threaded hole H2 may all be parallel to the height direction Z.

[0161] The installation direction of the bolts can be the height direction Z of the vehicle, which makes it easy to disassemble and install the bolts.

[0162] In some embodiments, the upper body 1 is provided with a nut 6a, which is provided with a threaded hole H2 and is used for threaded connection with a bolt. Optionally, the nut 6a may include a hexagonal flange nut.

[0163] Exemplarily, the upper body 1 may include an upper body sheet metal component 11 and a nut 6 a , and the nut 6 a may be welded to the upper body sheet metal component 11 .

[0164] In some embodiments, the lower body 2 is provided with a nut 6b. The nut 6b is provided with a threaded hole H2 and is used for threaded connection with the bolt. Optionally, the nut 6b may include a hexagonal flange nut.

[0165] Exemplarily, the lower body 2 may include a lower body sheet metal component 21 and a nut 6 b , and the nut 6 b may be welded to the lower body sheet metal component 21 .

[0166] In some embodiments, the vehicle further includes a sealing component 7 , which is sandwiched between the upper vehicle body 1 and the lower vehicle body 2 .

[0167] The sealing component 7 can achieve sealing in a variety of ways. For example, the sealing component 7 can achieve sealing by compression deformation. Alternatively, the sealing component 7 can also achieve sealing by bonding or other methods.

[0168] The sealing component 7 can be made of a variety of materials; for example, the sealing component 7 can be made of an elastic and compressible material, such as rubber, foam, etc. Alternatively, the sealing component 7 can also be made of a solidified colloid.

[0169] The sealing component 7 can achieve sealing between the upper body 1 and the lower body 2, reduce impurities entering the passenger compartment S, improve passenger experience, and enhance vehicle reliability.

[0170] In some embodiments, the vehicle includes a sealing member 7 , which is interposed between the upper body 1 and the frame 20 .

[0171] In some embodiments, the sealing component 7 may have the advantages of being dustproof, waterproof, soundproof, wear-resistant, and easy to maintain.

[0172] In some embodiments, the sealing member 7 surrounds the passenger compartment S of the vehicle.

[0173] The passenger compartment S may be a space for passengers to sit in, which is formed by the upper vehicle body 1 and the lower vehicle body 2. For example, the passenger compartment S may be provided with seats, armrests and other components.

[0174] The annular sealing component 7 can increase the sealing area, separate the passenger compartment S from the external environment, reduce external impurities entering the passenger compartment S through the space between the upper body 1 and the lower body 2, improve passenger experience, and enhance vehicle reliability.

[0175] In some embodiments, the sealing member 7 is bonded to the lower vehicle body 2 .

[0176] In some examples, glue may be applied to the lower body 2 and then the sealing component 7 may be bonded to the lower body 2 ; in an alternative example, the sealing component 7 may include adhesive backing and may be directly bonded to the lower body 2 .

[0177] The embodiment of the present application can reduce the offset of the sealing component 7 and the misalignment of the sealing component 7 when disassembling and assembling the upper body 1 and the lower body 2, thereby improving assembly efficiency; in addition, the sealing component 7 is bonded to the lower body 2, which can also improve the sealing performance.

[0178] In some embodiments, the material of the sealing component 7 includes EPDM (Ethylene Propylene Diene Monomer).

[0179] EPDM rubber has strong rebound force and good sealing performance.

[0180] In some embodiments, the lower body 2 is configured to be connected to the upper body 1 after the battery cells 8 are mounted on the frame 20 .

[0181] Because the battery cells 8 are already installed on the lower body 2 before the upper and lower bodies 1 and 2 are assembled, welding, glue baking, and other methods are used to achieve sealing when connecting the upper and lower bodies 1 and 2, which can easily damage the battery cells 8. The present embodiment uses a sealing component 7 to achieve sealing, which can reduce the risk of damage to the battery cells 8 during the assembly process of the upper and lower bodies 1 and 2.

[0182] In some embodiments, the vehicle further includes a vehicle interior, a human-computer interaction system, and an entertainment system mounted on the upper body 1. In the embodiment of the present application, the vehicle interior, the human-computer interaction system, and the entertainment system can be developed independently of the chassis 4.

[0183] In some embodiments, each first longitudinal beam 22 is detachably connected to the upper vehicle body 1 via at least one connecting member 3 .

[0184] The two first longitudinal beams 22 have relatively high strength. Connecting the first longitudinal beams 22 to the upper vehicle body 1 can improve the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2 .

[0185] In some embodiments, the first cross beam 23 is detachably connected to the upper body 1 via at least one connecting member 3 .

[0186] In some embodiments, connecting the first cross beam 23 and the first longitudinal beam 22 to the upper body 1 can improve the connection strength and connection stability between the upper body 1 and the lower body 2 .

[0187] In some embodiments, the torque box assembly 24 is detachably connected to the upper body 1 via at least one connecting member 3 .

[0188] Connecting the torque box assembly 24 to the upper body 1 can further improve the connection strength and connection stability between the upper body 1 and the lower body 2.

[0189] In some embodiments, the two first cross beams 23, the two first longitudinal beams 22, and the four torsion box assemblies 24 together form the first support surface 20a. The vehicle further includes a sealing component 7, which is sandwiched between the upper body 1 and the first support surface 20a.

[0190] The first supporting surface 20 a can provide stable support for the sealing component 7 , thereby improving the airtightness and watertightness of the passenger compartment S.

[0191] In some embodiments, the upper body 1 includes a second supporting surface 10 a , and the sealing component 7 is sandwiched between the second supporting surface 10 a and the first supporting surface 20 a .

[0192] In some embodiments, the topography of the first support surface 20a matches the topography of the second support surface 10a.

[0193] In some embodiments, a plurality of battery cells 8 are disposed on a side of the cover plate 25 facing away from the upper vehicle body 1 and connected to the cover plate 25 .

[0194] Figure 8 is a schematic structural diagram of the upper body of a vehicle provided in some embodiments of the present application; Figure 9 is a schematic structural diagram of a portion of the upper body of a vehicle provided in some embodiments of the present application.

[0195] As shown in FIG. 8 and FIG. 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 front wall panel assembly 14 .

[0196] In conventional vehicles, the front arm beam assembly 12, rear floor assembly 13, and dash assembly 14 are typically integrated into the lower body. This embodiment of the present application integrates components previously associated with the lower body into the upper body 1, simplifying the structure of the lower body 2 and facilitating the installation of components such as the battery system and drive system.

[0197] In some embodiments, the front arm beam assembly 12 may include a front arm beam, a bracket, and other components (eg, standard parts) integrated on the front arm beam. The front arm beam may provide support for some components of the vehicle, such as lamps.

[0198] In some embodiments, the rear floor assembly 13 includes a rear floor, a seat mounting structure disposed on the rear floor, standard components disposed on the rear floor row, and other components disposed on the rear floor. The rear floor can carry seats or other components.

[0199] In some embodiments, the dash panel assembly 14 includes a dash panel and other components mounted on the dash panel (e.g., standard components and brackets). The dash panel serves as an important barrier between the engine compartment and the driver's cabin. It not only absorbs and transmits energy during a collision, provides sufficient rigidity for the vehicle body frame, but also affects the sealing performance of the entire vehicle.

[0200] In some embodiments, the upper body 1 includes a front arm beam assembly 12, a rear floor assembly 13, and a front panel assembly 14. In this embodiment, the main components of the lower body 2, such as the front arm beam assembly 12, the rear floor assembly 13, and the front panel assembly 14, are integrated into the upper body 1.

[0201] In some embodiments, the rear floor assembly 13 includes a rear floor. The cover plate 25 is closer to the front of the vehicle than the rear floor.

[0202] In some embodiments, the front arm beam assembly 12 is disposed at the front end of the upper body 1 close to the front of the vehicle.

[0203] In some embodiments, the upper vehicle body 1 further includes a rear panel assembly 15. The front panel assembly 14 is located on a side of the rear panel assembly 15 close to the front of the vehicle.

[0204] In some embodiments, the rear panel assembly 15 includes a rear panel and other components (such as standard parts, brackets, locks, etc.) arranged on the rear panel. The rear panel is a car covering, which is the tailgate of the car trunk and one of the main load-bearing structural components at the rear of the car.

[0205] Referring to Figures 2 to 9 , in some embodiments, the upper body 1 includes a rear floor assembly 13, a dash panel assembly 14, and two second longitudinal beams 16. Each second longitudinal beam 16 connects the rear floor assembly 13 and the dash panel assembly 14. The rear floor assembly 13, the dash panel assembly 14, and the two second longitudinal beams 16 collectively form a second support surface 10a.

[0206] In some embodiments, the dash assembly 14 includes a fourth cross member 141, and the rear floor assembly 13 includes a sixth cross member 131. For example, one first cross member 23 and the fourth cross member 141 are detachably connected via a connector 3, and another first cross member 23 and the fourth cross member 141 are detachably connected via a connector 3.

[0207] In some embodiments, the upper body 1 includes a fourth crossbeam 141, a sixth crossbeam 131, two second longitudinal beams 16, and four connecting plates 18. Each second longitudinal beam 16 is connected to the fourth crossbeam 141 and the sixth crossbeam 131 via two connecting plates 18. The fourth crossbeam 141, the sixth crossbeam 131, the two second longitudinal beams 16, and the four connecting plates 18 collectively form a second support surface 10a. The vehicle also includes a sealing member 7, which is interposed between the second support surface 10a and the lower body 2.

[0208] The second supporting surface 10 a can stably press the sealing component 7 to improve the airtightness and watertightness of the passenger compartment S.

[0209] In some embodiments, the sealing member 7 is clamped between the first support surface 20a and the second support surface 10a.

[0210] The first supporting surface 20 a is annular, and the second supporting surface 10 a is annular. The first supporting surface 20 a and the second supporting surface 10 a clamp the annular sealing component 7 to achieve sealing of the passenger compartment S.

[0211] In some embodiments, the second longitudinal beam 16 may be a rocker beam of the upper body 1 .

[0212] In some embodiments, the cover plate 25 is integrated on the lower body 2, and the middle portion of the upper body 1 is hollowed out.

[0213] In some embodiments, the dash assembly 14 includes a fourth cross beam 141 and two connecting plates 18 connected to both ends of the fourth cross beam 141 , and the rear floor assembly 13 includes a sixth cross beam 131 and another two connecting plates 18 connected to both ends of the sixth cross beam 131 .

[0214] For example, the two connecting plates 18 connected to the fourth cross beam 141 may be hinge inner plates, which may provide mounting points for the front door hinges and the IP dashboard.

[0215] For example, the two connecting plates 18 connected to the sixth cross beam 131 may be rear longitudinal beam upper cover plates. The rear longitudinal beam upper cover plates may connect the second longitudinal beam and the wheel house plate.

[0216] FIG10 is a schematic partial cross-sectional view of a vehicle provided in some embodiments of the present application.

[0217] As shown in FIG10 , in some embodiments, the upper vehicle body 1 includes a front arm beam assembly 12, and the lower vehicle body 2 includes a shock absorbing tower 295. The front arm beam assembly 12 and the shock absorbing tower 295 are detachably connected via a connector 3.

[0218] The connecting member 3 connects the front arm beam assembly 12 and the shock tower 295, which can improve the connection strength and connection stability of the upper body 1 and the lower body 2.

[0219] For example, the shock tower 295 is a metal structure installed on the shock absorber of the automobile, and the shock absorber and the shock absorbing spring of the suspension system can be installed on the shock tower 295 .

[0220] In some embodiments, the forearm beam assembly 12 and the shock tower 295 are detachably connected via a plurality of connectors 3. The connection between the forearm beam assembly 12 and the shock tower 295 is located on a force transmission path, and the plurality of connectors 3 can improve the stability of the connection between the forearm beam assembly 12 and the shock tower 295.

[0221] FIG11 is another schematic partial cross-sectional view of a vehicle provided in some embodiments of the present application.

[0222] As shown in FIG11 , in some embodiments, the frame 20 includes a first crossbeam 23, the upper body 1 includes a dash panel assembly 14, and the dash panel assembly 14 includes a fourth crossbeam 141. The first crossbeam 23 and the fourth crossbeam 141 are detachably connected via a connector 3.

[0223] The connecting member 3 connects the first cross beam 23 and the fourth cross beam 141 , which can improve the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2 .

[0224] FIG12 is another schematic partial cross-sectional view of a vehicle provided in some embodiments of the present application.

[0225] 12 , the frame includes a first longitudinal beam 22 , and the upper body 1 includes a second longitudinal beam 16 . The first longitudinal beam 22 and the second longitudinal beam 16 are detachably connected via a connector 3 .

[0226] The connecting member 3 connects the first longitudinal beam 22 and the second longitudinal beam 16 , thereby improving the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2 .

[0227] In some embodiments, the first longitudinal beam 22 includes a first main body 221 and a first connecting portion 222. The first connecting portion 222 is located outside the first main body 221, and the upper end of the first main body 221 is higher than the first connecting portion 222 in the vehicle height direction Z. The second longitudinal beam 16 includes a second main body 161 and a second connecting portion 162. The second connecting portion 162 is located inside the second main body 161. The second main body 161 is located above the first connecting portion 222, and the second connecting portion 162 is located above the first main body 221. The second main body 161 is detachably connected to the first connecting portion 222, and the second connecting portion 162 is detachably connected to the first main body 221.

[0228] The first longitudinal beam 22 and the second longitudinal beam 16 are connected at different heights, which can improve the connection strength of the first longitudinal beam 22 and the second longitudinal beam 16 and reduce the risk of relative displacement between the first longitudinal beam 22 and the second longitudinal beam 16. The first longitudinal beam 22 and the second longitudinal beam 16 overlap in the width direction Y, thereby limiting each other and reducing relative displacement between the first longitudinal beam 22 and the second longitudinal beam 16 in the width direction.

[0229] In some embodiments, the second body 161 abuts against the first connection portion 222. The abutting surfaces of the second body 161 and the first connection portion 222 can seal the passenger compartment to a certain extent.

[0230] In some embodiments, a portion of the sealing component 7 is clamped between the second connecting portion 162 and the first body 221 .

[0231] Exemplarily, the second body 161 and the first connecting portion 222 form a connection interface between the first longitudinal beam 22 and the second longitudinal beam 16. In other words, the connecting member 3 connecting the second body 161 and the first connecting portion 222 needs to have a larger size and strength to improve the stability of the connection between the first longitudinal beam 22 and the second longitudinal beam 16.

[0232] The second connecting portion 162 and the first body 221 form a sealed interface between the first longitudinal beam 22 and the second longitudinal beam 16. The connection between the second connecting portion 162 and the first body 221 is primarily for compression of the sealing component. Therefore, the vehicle's connection strength between the second connecting portion 162 and the first body 221 is relatively low, and the connector 3 connecting the second connecting portion 162 and the first body 221 needs to be larger and stronger.

[0233] FIG13 is another partial schematic cross-sectional view of a vehicle provided in some embodiments of the present application.

[0234] As shown in FIG13 , in some embodiments, the upper vehicle body 1 includes a rear floor assembly 13 , and the lower vehicle body 2 includes a fifth cross member 296 , which is detachably connected to the rear floor assembly 13 via a connector 3 .

[0235] The connecting member 3 connects the fifth cross member 296 and the rear floor assembly 13 , thereby improving the connection strength and connection stability between the upper vehicle body 1 and the lower vehicle body 2 .

[0236] In some embodiments, there may be a plurality of fifth beams 296 .

[0237] In some embodiments, the fifth cross member 296 is connected to the rear longitudinal member assembly.

[0238] FIG14 is another schematic partial cross-sectional view of a vehicle provided in some embodiments of the present application.

[0239] As shown in FIG. 14 , in some embodiments, the upper vehicle body 1 includes a rear wheel cover 17 , and the rear wheel cover 17 and the lower vehicle body 2 are detachably connected via a connector 3 .

[0240] Please refer to Figures 10 to 14 together. In the embodiment of the present application, connecting members 3 are provided at multiple positions susceptible to stress to improve the connection strength and connection stability between the upper body 1 and the lower body 2.

[0241] 1 to 9 , an embodiment of the present application provides a vehicle comprising an upper body 1, a lower body 2, a plurality of connectors 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 connectors 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.

[0242] The lower body 2 includes two first longitudinal beams 22, two first cross beams 23, and four torsion box assemblies 24. Each first cross beam 23 is connected to the two first longitudinal beams 22 via two torsion box assemblies 24. The upper body 1 includes a rear floor assembly 13, a front panel assembly 14, and two second longitudinal beams 16, each connecting the rear floor assembly 13 and the front panel assembly 14. The two first longitudinal beams 22 are detachably connected to the two second longitudinal beams 16 via connectors 3.

[0243] The first cross beam 23 is detachably connected to the upper vehicle body 1 via at least one connecting member 3. Each torsion box assembly 24 is detachably connected to the upper vehicle body 1 via at least one connecting member 3.

[0244] The two first cross members 23, the two first longitudinal members 22, and the four torque box assemblies 24 collectively form a first support surface 20a. The rear floor assembly 13, the dash assembly 14, and the two second longitudinal members 16 collectively form a second support surface 10a. The sealing member 7 is sandwiched between the first support surface 20a and the second support surface 10a.

[0245] The lower body 2 also includes a cover plate 25 and at least two second crossbeams 26, each of which connects the two first longitudinal beams 22. The first longitudinal beams 22 and the second crossbeams 26 protrude from the lower surface of the cover plate 25. The at least two second crossbeams 26, the two first longitudinal beams 22, and the cover plate 25 together form a storage compartment 27 with an opening, the opening facing the cover plate 25. Multiple battery cells 8 are accommodated in the storage compartment 27 and connected to the cover plate 25. The vehicle also includes a protective plate 5, which is connected to the first longitudinal beams 22 and covers the opening.

[0246] 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.

[0247] 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 of a vehicle, comprising: A lower vehicle body, comprising a frame, wherein the frame has a receiving cavity; A plurality of battery cells are arranged in the accommodation cavity and connected to the frame.

2. The chassis according to claim 1, wherein: The frame includes a first longitudinal beam and a first transverse beam, the first longitudinal beam extending in a length direction of the vehicle, the first transverse beam extending in a width direction of the vehicle, and the first longitudinal beam connected to the first transverse beam.

3. The chassis according to claim 2, wherein: The first longitudinal beam is a sill beam of the lower vehicle body.

4. A chassis according to claim 2 or 3, wherein: The chassis further includes a cover plate, which is located on an upper side of the plurality of battery cells and connected to the first longitudinal beam and the first transverse beam.

5. The chassis according to claim 4, wherein: The cover panel serves as a floor for the passenger compartment of the vehicle.

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

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

8. The chassis according to any one of claims 4 to 7, wherein: The chassis further includes a third cross beam, which is disposed on the upper side of the cover plate and connected to the first longitudinal beam.

9. The chassis according to claim 8, wherein: The third cross beam is used for installing a seat of the vehicle.

10. A chassis according to claim 8 or 9, wherein: The third cross beam is welded to the cover plate.

11. The chassis according to any one of claims 2 to 10, wherein: The frame includes two first longitudinal beams and two first transverse beams, the two first longitudinal beams are respectively located on both sides of the plurality of battery cells along the width direction, the two first transverse beams are respectively located on both sides of the plurality of battery cells along the length direction, and each first transverse beam is connected to the two first longitudinal beams.

12. The chassis according to claim 11, wherein: The frame further includes four torsion box assemblies, and each of the first cross beams is connected to two of the first longitudinal beams through two of the torsion box assemblies.

13. The chassis according to any one of claims 2 to 12, wherein: The frame further comprises a second cross beam arranged in the accommodating cavity, wherein the second cross beam and the first cross beam are arranged at intervals along the length direction; and the second cross beam is connected to the first longitudinal beam.

14. The chassis according to claim 13, wherein: There are a plurality of the second cross beams, and the plurality of the second cross beams are arranged at intervals along the length direction; the battery cells are arranged between adjacent second cross beams.

15. The chassis according to any one of claims 2 to 14, wherein: The frame further includes a protective plate, the protective plate being located at a lower side of the plurality of battery cells and covering the accommodation cavity from a lower side; The protective plate is fixedly connected to the first longitudinal beam and the first transverse beam, or the protective plate is detachably connected to the first transverse beam and the first longitudinal beam.

16. The chassis according to any one of claims 1-15, further comprising a front longitudinal beam assembly and a front anti-collision beam, wherein the front longitudinal beam assembly is fixedly connected to the frame or detachably connected to the frame, and the front anti-collision beam is fixedly connected to the front longitudinal beam assembly or detachably connected to the front longitudinal beam assembly.

17. The chassis according to any one of claims 1-16 further comprises a rear longitudinal beam assembly and a rear anti-collision beam, wherein the rear longitudinal beam assembly is fixedly connected to the frame or detachably connected to the frame, and the rear anti-collision beam is fixedly connected to the rear longitudinal beam assembly or detachably connected to the rear longitudinal beam assembly.

18. A vehicle comprising: Upper body; According to the chassis according to any one of claims 1-17, the frame is detachably connected to the upper body.

19. The chassis of claim 18, wherein: The lower body is configured to be connected to the upper body after the battery cells are mounted on the frame.

20. The vehicle according to claim 18 or 19, further comprising a connecting member, by which the frame and the upper body are detachably connected.

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

22. The vehicle of claim 21, wherein: One of the upper body and the frame is provided with at least a through hole, and the other is provided with at least a threaded hole; The bolt passes through the through hole and is threadedly connected with the hole wall of the threaded hole.

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

24. A vehicle according to any one of claims 18 to 23, wherein: The upper vehicle body includes a front arm beam assembly, and the lower vehicle body includes a shock absorbing tower; the front arm beam assembly and the shock absorbing tower are detachably connected via a connecting piece.

25. A vehicle according to any one of claims 18 to 24, wherein: The frame includes a first cross beam, the upper body includes a dash panel assembly, and the dash panel assembly includes a fourth cross beam; The first cross beam and the fourth cross beam are detachably connected via a connecting piece.

26. A vehicle according to any one of claims 18 to 25, wherein: The frame includes a first longitudinal beam, the upper body includes a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are detachably connected via a connecting piece.

27. The vehicle of claim 26, wherein: The first longitudinal beam includes a first main body and a first connecting portion, the first connecting portion is located outside the first main body, and an upper end of the first main body is higher than the first connecting portion in a height direction of the vehicle; The second longitudinal beam comprises a second main body and a second connecting portion, wherein the second connecting portion is located on the inner side of the second main body, the second main body is located on the upper side of the first connecting portion, and the second connecting portion is located on the upper side of the first main body; The second body is detachably connected to the first connection portion, and the second connection portion is detachably connected to the first body.

28. The vehicle according to claim 27, further comprising a sealing member, a portion of which is sandwiched between the second connecting portion and the first body.

29. A vehicle according to any one of claims 18 to 28, wherein: The upper vehicle body includes a rear floor assembly; the lower vehicle body includes a fifth cross beam, and the fifth cross beam and the rear floor assembly are detachably connected via a connecting piece.

30. The vehicle according to any one of claims 18 to 23, further comprising a sealing member interposed between the upper body and the frame.

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

32. A vehicle according to claim 30 or 31, wherein: The frame includes two first longitudinal beams, two first transverse beams and four torsion box assemblies, and each of the first transverse beams is connected to two of the first longitudinal beams through two of the torsion box assemblies; The two first cross beams, the two first longitudinal beams and the four torsion box assemblies together form a first support surface; The upper body comprises a fourth cross beam, a sixth cross beam, two second longitudinal beams and four connecting plates, each of the second longitudinal beams being respectively connected to the fourth cross beam and the sixth cross beam through two connecting plates; The fourth cross beam, the sixth cross beam, the two second longitudinal beams and the four connecting plates together form a second supporting surface; The sealing component is sandwiched between the first supporting surface and the second supporting surface.

Images