Underbody, skateboard chassis and vehicle

Abstract

A vehicle underbody (6), a skateboard chassis (8) and a vehicle (1), wherein the underbody (6) includes a cabin assembly (61), an intermediate assembly (62) and a bottom plate assembly (63), the intermediate assembly (62) is used for mounting a battery cell (5), and the cabin assembly (61) and the bottom plate assembly (63) are connected to both ends of the intermediate assembly (62), wherein at least one of the cabin assembly (61) and the bottom plate assembly (63) is removably connected to the intermediate assembly (62), which can reduce the cost of the vehicle.

Description

[Technical field]

[0001] The present application relates to the field of vehicle technology, in particular to underbodies, skateboard chassis and vehicles. [Background technology]

[0002] Currently, with the rapid development of automation and smart technology, new energy vehicles are becoming increasingly popular and purchased by the public.

[0003] How to reduce costs is one research direction in vehicle technology. Summary of the Invention

[0004] The present application provides an underbody, a skateboard chassis and a vehicle that can reduce the cost of the vehicle.

[0005] According to a first aspect, the present application provides an underbody for a vehicle, the underbody comprising: Front Cabin and, Energy Cabin Framework and, Rear cabin and Energy Cabin Framework is used to mount the battery cells, Front Cabin and Rear cabin What is that? Energy Cabin Framework where: Front Cabin and Rear cabin At least one of the following: Energy Cabin Framework is removably connected to the

[0006] In the above technical proposal, Front Cabin and Rear cabin At least one of Energy Cabin Framework Thus, the Front Cabin , Rear cabin and Energy Cabin Framework Compared with an integrated structure, an underbody divided into two or three parts can be transported and stored separately, i.e., the flexibility of storage and transportation is higher and storage and transportation are more convenient, thereby reducing storage and transportation costs.

[0007] In some embodiments, Front Cabin and Rear cabin That is, Energy Cabin Framework is removably connected to the

[0008] In the above technical proposal, Front Cabin and Rear cabin and Energy Cabin Framework In this way, the underbody is divided into three detachable parts, and the three parts can be transported and stored separately during transportation and storage, which is extremely convenient and further reduces the costs of storage and transportation.

[0009] In some embodiments, Front Cabin and Rear cabin At least one of the above is provided via a fastener. Energy Cabin Framework is removably connected to the

[0010] In the above technical proposal, Front Cabin and Rear cabin This means that the connection is achieved through fasteners, and compared to removable connection methods such as latching, the structural strength of the connection is greater, thereby improving the stability, reliability and durability of the underbody in use.

[0011] In some embodiments, Energy Cabin Framework The battery battery includes a floor, two first cross members arranged opposite each other along a first direction, and two first side members arranged opposite each other along a second direction, the first side member connects the two first cross members, and the floor, the two first cross members and the two first side members together form an accommodating cavity for accommodating a battery cell, and the first direction intersects with the second direction.

[0012] In the above technical proposal, Energy Cabin FrameworkBy installing the first cross members and the first side members to include two first cross members and two first side members, the storage space for accommodating the battery cells is limited together with the floor, and this installation method is easy to process and manufacture, and can form a relatively large storage space.

[0013] In some embodiments, Front Cabin and Rear cabin are removably connected to opposite ends of the first side member, respectively.

[0014] In the above technical proposal, Front Cabin and Rear cabin and are respectively installed so as to connect to both ends of the first side member, Front Cabin , Energy Cabin Framework and Rear cabin Generally, the first side members are aligned in a longitudinal direction, so that the connection to the longitudinally extending first side member is more convenient than the connection to the first cross member. Also, the first side member generally has a relatively large stiffness and strength, so that the connection to the first side member is more reliable.

[0015] In some embodiments, the underbody further includes a second cross member, the second cross member being located between the two first cross members, and both ends of the second cross member being connected to the two first side members, respectively, and the second cross member being used to connect the battery cells.

[0016] In the above technical solution, the second cross member is connected to the battery cell, thereby serving to restrict the position of the battery cell at the connection point, reducing the size change caused by the expansion of the battery cell during charging and discharging, and further extending the service life of the battery cell.

[0017] In some embodiments, Front Cabinincludes a front collision prevention beam, a third cross member, and two second side members, the third cross member and the front collision prevention beam are arranged opposite each other along a first direction, the two second side members are arranged opposite each other along a second direction, the second side members are connected to the third cross member and the front collision prevention beam, and the second direction intersects with the first direction.

[0018] In the above technical solution, by installing a front collision prevention beam, a third cross member and two second side members, they are combined with themselves or other members to form an approximately rectangular structure, which has good supporting stability and facilitates the arrangement of other structures.

[0019] In some embodiments, Front Cabin The torsion box further includes two first torsion boxes, the two first torsion boxes are installed opposite to each other along the second direction and connected to the two second side members in one-to-one correspondence, and the first torsion boxes are connected to the second side members Energy Cabin Framework The third cross member is connected to the two first torsion boxes, and the first torsion boxes are Energy Cabin Framework is removably connected to the

[0020] In the above technical proposal, a first torsion box is installed and a second side member is connected via the first torsion box. Energy Cabin Framework By removably connecting to the second side member Energy Cabin Framework This significantly increases the structural strength of the connection with the underbody, improving the structural reliability of the underbody.

[0021] In some embodiments, Energy Cabin FrameworkThe battery battery includes a floor, two first cross members arranged opposite each other along a first direction, and two first side members arranged opposite each other along a second direction, the first side members connecting the two first cross members, the floor, the two first cross members and the two first side members surroundingly forming an accommodating cavity for accommodating a battery cell, and the two first torsion boxes removably connected to the two first side members in one-to-one correspondence.

[0022] In the above technical solution, the first torsion box and the first side member are detachably connected, and the first side member extends along the vertical direction, so that the connection with the first side member extending in the vertical direction is more convenient than the connection with the first cross member.

[0023] In some embodiments, the first torsion box includes a box body and a connection portion, the box body is connected to the second side member, the connection portion includes a first wall and a second wall that are connected by folding, the first wall and the first side member face each other in a second direction and are removably connected, the second wall and the first side member face each other along a third direction and are removably connected, and the first direction, the second direction, and the third direction are perpendicular to each other two by two.

[0024] In the above technical solution, the first torsion box is installed to include a first wall body and a second wall body that are bent toward each other, and the first wall body and the second wall body are respectively connected to the first side member, i.e., the first torsion box is connected to the first side member in two directions, thereby greatly increasing the structural strength of the connection between the first torsion box and the first side member and improving the connection reliability.

[0025] In some embodiments, Front Cabin The shock absorber tower further includes two shock absorber towers, and the two shock absorber towers are connected to the two second side members in a one-to-one correspondence.

[0026] In the above technical solution, a shock absorber tower is installed on the second side member, which can provide side support for an offset collision and also provide support for the shock absorber.

[0027] In some embodiments, Rear cabin includes a rear collision prevention beam, a fourth cross member, and two third side members, the fourth cross member and the rear collision prevention beam are arranged opposite each other along a first direction, the two third side members are arranged opposite each other along a second direction, the third side members are connected to the fourth cross member and the rear collision prevention beam, and the second direction intersects with the first direction.

[0028] In the above technical solution, by installing a rear collision prevention beam, a fourth cross member and two third side members, they are combined with themselves or other members to form an approximately rectangular structure, which has good supporting stability and facilitates the arrangement of other structures.

[0029] In some embodiments, Rear cabin The torsion box further includes two second torsion boxes, the two second torsion boxes are installed opposite to each other along the second direction and connected to the two third side members in one-to-one correspondence, and the second torsion boxes are connected to the third side members Energy Cabin Framework The fourth cross member is connected to the two second torsion boxes, and the second torsion boxes are Energy Cabin Framework is removably connected to the

[0030] In the above technical proposal, a second torsion box is installed and the third side member is connected via the second torsion box. Energy Cabin Framework By removably connecting to the third side member Energy Cabin Framework This significantly increases the structural strength of the connection with the underbody, improving the structural reliability of the underbody.

[0031] In some embodiments, Energy Cabin Framework The battery battery includes a floor, two first cross members arranged opposite each other along a first direction, and two first side members arranged opposite each other along a second direction, the first side members connecting the two first cross members, the floor, the two first cross members and the two first side members surroundingly forming an accommodating cavity for accommodating a battery cell, and the two second torsion boxes removably connected to the two first side members in one-to-one correspondence.

[0032] In the above technical solution, the second torsion box and the first side member are detachably connected, and the first side member extends along the vertical direction, so that the connection with the first side member extending in the vertical direction is more convenient than the connection with the first cross member.

[0033] In some embodiments, the second torsion box includes a box body and a functional part, the box body is connected to a third side member, the functional part includes a third wall and a fourth wall that are connected by folding, the third wall and the first side member face each other in a second direction and are removably connected, the fourth wall and the first side member face each other along a third direction and are removably connected, and the first direction, the second direction and the third direction are perpendicular to each other two by two.

[0034] In the above technical solution, the second torsion box is installed to include a third wall and a fourth wall that are bent toward each other, and the third wall and the fourth wall are respectively connected to the first side member, that is, the first torsion box is connected to the first side member in two directions, thereby greatly increasing the structural strength of the connection between the second torsion box and the first side member 623 and improving the connection reliability.

[0035] In some embodiments, Rear cabinfurther includes a fifth cross member, the fifth cross member being connected to the two box bodies and located at an end of the box body proximate to the third side member.

[0036] In the above technical proposal, a fifth cross member is installed, Rear cabin This further improves the structural stability and durability of the product.

[0037] According to a second aspect, an embodiment of the present application further provides a skateboard chassis, the skateboard chassis including an underbody and a battery cell according to any one of the above embodiments, the battery cell comprising: Energy Cabin Framework is connected to.

[0038] According to a third aspect, an embodiment of the present application further provides a vehicle, the vehicle including an underbody and an upper body according to any one of the above embodiments, the upper body being connected to the underbody.

[0039] In some embodiments, the upper body is removably connected to the underbody.

[0040] By removably connecting the upper body and the underbody, it is possible to realize separation, decoupling and connection between the upper body and the underbody, and further realize independent development of the upper body and the underbody, making it possible to replace the upper body and the underbody according to demand, thereby shortening the research and development cycle and reducing costs. [Brief description of the drawings]

[0041] The following describes features, advantages and technical effects of exemplary embodiments of the present application with reference to the drawings. [Figure 1] 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application; [Diagram 2] FIG. 2 is an exploded structural schematic diagram of an underbody according to an embodiment of the present application. [Diagram 3]FIG. 2 is a structural schematic diagram of the underbody energy cabin framework of an embodiment of the present application. [Figure 4] FIG. 2 is an exploded structural schematic diagram of the energy cabin framework, the battery cell and the guard of the underbody of the embodiment of the present application. [Diagram 5] FIG. 2 is a structural schematic diagram of a front cabin of an underbody according to an embodiment of the present application. [Figure 6] FIG 2 is a structural schematic diagram of a rear cabin of an underbody of an embodiment of the present application. In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0042] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following clearly and completely describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and obviously, the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art on the basis of the embodiments of the present application without any creative efforts are all within the scope of protection of the present application.

[0043] 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 "comprises" and "has" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive "comprises". 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.

[0044] 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.

[0045] 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 fixedly connected, detachably connected or integrally connected, may be directly connected, may be indirectly connected through an intermediate medium, or may be communicated inside 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.

[0046] 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.

[0047] 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.

[0048] The term "plurality" as used herein refers to two or more (including two).

[0049] In the related art, the underbody of a vehicle is generally Front Cabin and, Energy Cabin Framework and, Rear cabinThe three parts have an integral structure, and the integral underbody can improve the crashworthiness of the vehicle by improving the rigidity of the vehicle.

[0050] However, the one-piece underbody structure occupies a relatively large amount of space, and therefore both the transportation and storage costs are relatively high.

[0051] In view of this, the present application provides a technical solution, which includes: Front Cabin and Rear cabin At least one of Energy Cabin Framework By removably connecting to Front Cabin , Energy Cabin Framework and Rear cabin and separating at least both of the integral structures, thereby facilitating transportation and storage and reducing transportation and storage costs.

[0052] FIG. 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application.

[0053] As shown in FIG. 1 , an embodiment of the present application provides a vehicle 1, which includes an underbody 6 and an upper body 7, and the upper body 7 is connected to the underbody 6.

[0054] The embodiment of the present application does not limit the manner of connection between the upper body 7 and the underbody 6. Exemplarily, the two may be connected by welding or a removable connection method.

[0055] In some embodiments, the upper body 7 and the underbody 6 are removably connected.

[0056] Exemplarily, the upper body 7 and the underbody 6 are removably connected via a connecting member. The embodiments of the present application do not limit the type of the connecting member, and in some examples, the connecting member may include at least one of a bolt, a nut, a stud, a screw, and a pin. In other examples, the connecting member may include a buckle.

[0057] In the embodiment of the present application, the upper body 7 is removably connected to the underbody 6, which realizes the separation, decoupling and connection of the upper body 7 and the underbody 6, and further realizes independent development of the upper body 7 and the underbody 6, making the upper body 7 and the underbody 6 replaceable according to demand, thereby shortening the research and development cycle and reducing costs.

[0058] FIG. 2 is a schematic exploded view of the underbody of the embodiment of the present application.

[0059] As shown in FIG. 2, the underbody 6 of the vehicle 1 according to the embodiment of the present application is Front Cabin 61, Energy Cabin Framework 62, Rear cabin 63 and Energy Cabin Framework 62 is used to mount the battery cell 5; Front Cabin 61 and Rear cabin What is 63? Energy Cabin Framework 62, where Front Cabin 61 and Rear cabin At least one of 63 Energy Cabin Framework 62.

[0060] The examples of the present application are Front Cabin 61 and Energy Cabin Framework 62, and Rear cabin 63 and Energy Cabin Framework There is no limitation on the specific manner of detachably connecting 62, and for example, the detachable connection may be realized by using a locking, screw connection, rivet connection, etc.

[0061] Front Cabin 61 and Rear cabin At least one of 63 Energy Cabin Framework 62, thus removably connected, Front Cabin 61, Rear cabin 63 and Energy Cabin FrameworkCompared with the structure in which the underbody 62 is integrated, the underbody 6 divided into two or three parts can be transported and stored separately, that is, the storage and transportation can be more flexible and more convenient, thereby reducing the storage and transportation costs; and Front Cabin 61, Energy Cabin Framework 62 and Rear cabin 63 is removably connected, Front Cabin 61, Energy Cabin Framework 62 and Rear cabin Realizing the separation and connection of 63, and further realizing the independent development of the three, Front Cabin 61, Energy Cabin Framework 62 and Rear cabin 63 can be replaced according to demand, shortening the research and development cycle and reducing costs.

[0062] In some embodiments, Front Cabin 61 and Rear cabin 63 means either Energy Cabin Framework 62.

[0063] Front Cabin 61 and Rear cabin 63 and Energy Cabin Framework 62 so as to be detachably connected thereto, and thus the underbody 6 is divided into three detachable parts, which can be transported and stored separately during transportation and storage, which is extremely convenient and further reduces the costs of storage and transportation.

[0064] In some embodiments, Front Cabin 61 and Rear cabin At least one of 63 and 64 is connected via a fastener 64. Energy Cabin Framework 62.

[0065] The embodiments of the present application are not limited to a specific type of fastener 64. Illustratively, fastener 64 may be a bolt and nut assembly, or a connecting member such as a rivet.

[0066] Front Cabin 61 and Rear cabin63, the connection is realized via fasteners 64, and the structural strength of the connection is higher than that of removable connection methods such as latches, thereby improving the stability, reliability and durability of use of the underbody 6.

[0067] In some embodiments, the fastener 64 includes a bolt.

[0068] Illustratively, there are a plurality of connection members, and at least a portion of the plurality of connection members are bolts.

[0069] The bolts are highly standardized and easy to replace. The bolt connection method is easy to attach and detach, which contributes to improving assembly efficiency.

[0070] Compared to other process connection methods such as rotary tapping rivets (FDS) and self-piercing rivets (SPR), the use of bolted connections provides: Front Cabin 61, Energy Cabin Framework 62 and Rear cabin Decoupling of 63 physical structures can be achieved.

[0071] FIG. 3 shows an underbody of an embodiment of the present application. Energy Cabin Framework FIG. 4 is a structural schematic diagram of the underbody of the embodiment of the present application. Energy Cabin Framework 2 is a schematic exploded view of the battery cell and the guard. FIG.

[0072] As shown in FIGS. 3 and 4, in some embodiments, Energy Cabin Framework 62 includes a floor 621, two first cross members 622 arranged opposite each other along a first direction X, and two first side members 623 arranged opposite each other along a second direction Y, the first side member 623 connects the two first cross members 622, the floor 621, the two first cross members 622 and the two first side members 623 together form an accommodating cavity 624 for accommodating the battery cells 5, and the first direction X intersects with the second direction Y.

[0073] The floor 621 of the embodiment of the present application may be used as the floor 621 of the vehicle 1. Optionally, the floor 621 is used to connect the battery cells 5. Further optionally, the battery cells 5 are glued to the floor 621.

[0074] Illustratively, the two first cross members 622 and the two first side members 623 in the embodiments of the present application may be alternately installed and connected to each other, the first side members 623 may extend beyond the first cross member 622 along their longitudinal direction, and the first cross member 622 may extend beyond the first side member 623 along their longitudinal direction.

[0075] The embodiment of the present application does not limit whether the structure of the two first cross members 622 is the same, and the structure of the two first cross members 622 may be the same or different. The same is true for the first side member 623, and the present application will not further describe it here.

[0076] Optionally, the first direction X is perpendicular to the second direction Y.

[0077] Energy Cabin Framework By installing 62 to include two first cross members 622 and two first side members 623, together with the floor 621, a storage space for accommodating the battery cells 5 is defined. This installation method is easy to process and manufacture, and can form a relatively large storage space.

[0078] In some optional embodiments, the two first cross members 622 and the two first side members 623 are connected using a welding method.

[0079] In some optional embodiments, a seal is provided between at least one of the two first cross members 622 and the two first side members 623 and the floor 621 .

[0080] The sealing material is at least one of a sealing foam or a sealant.

[0081] In some optional embodiments, the two first cross members 622 and the two first side members 623 each achieve connection with the floor 621 via a connecting member.

[0082] Exemplarily, the connecting members are bolts or rivets.

[0083] In some embodiments, Front Cabin 61 and Rear cabin 63 are detachably connected to both ends of the first side member 623, respectively.

[0084] In the examples of the present application, Front Cabin 61 is removably connected to the same end of the two first side members 623, Rear cabin 63 is detachably connected to the other two same side ends of the two first side members 623 .

[0085] Selectively, Front Cabin 61, Energy Cabin Framework and Rear cabin 63 are arranged in sequence along the first direction X.

[0086] Front Cabin 61 and Rear cabin 63 and 623 are respectively installed so as to be connected to both ends of the first side member 623, Front Cabin 61, Energy Cabin Framework and Rear cabin Since the first side member 623 is generally aligned in a longitudinal direction, it is more convenient to connect the first side member 623 extending in a longitudinal direction than to connect the first cross member 622. Also, the first side member 623 generally has a relatively large stiffness and strength, making the connection to the first side member 623 more reliable.

[0087] In some embodiments, the underbody 6 further includes a second cross member 625, which is located between the two first cross members 622, and both ends of the second cross member 625 are connected to the two first side members 623 respectively, and the second cross member 625 is used to connect the battery cells 5.

[0088] A second cross member 625 in the present embodiment is located in the receiving cavity 624 .

[0089] Optionally, the second cross member 625 is parallel to the first cross member 622 .

[0090] Optionally, the number of the second cross members 625 is multiple, and the multiple second cross members 625 are spaced apart along the first direction X, and at least a portion of the multiple battery cells 5 are interposed between two adjacent second cross members 625.

[0091] The embodiment of the present application does not limit the manner of connection between the battery cells 5 and the second cross member 625. Illustratively, the battery cells 5 are bonded to the second cross member 625.

[0092] The embodiment of the present application does not limit the manner in which the second cross member 625 and the first side member 623 are connected to each other, and for example, the two may be connected to each other using a method such as a screw connection or welding.

[0093] The second cross member 625 is connected to the battery cell 5, thereby serving to restrict the position of the battery cell 5 at the connection point, reducing the range of size change due to expansion of the battery cell 5 during charging and discharging, and further extending the service life of the battery cell 5.

[0094] Optionally, the second cross member 625 is connected to the side of the battery cell 5. By connecting the second cross member 625 to the side of the battery cell 5, the effect of limiting the size becomes more apparent.

[0095] FIG. 5 shows an underbody of an embodiment of the present application. Front Cabin FIG.

[0096] As shown in FIG. 5, in some embodiments, Front Cabin 61 includes a front collision prevention beam 611, a third cross member 612, and two second side members 613, the third cross member 612 and the front collision prevention beam 611 are installed opposite each other along a first direction X, the two second side members 613 are installed opposite each other along a second direction Y, the second side members 613 are connected to the third cross member 612 and the front collision prevention beam 611, and the second direction Y intersects with the first direction X.

[0097] The embodiment of the present application does not limit the manner of connection between the second side member 613 and the third cross member 612 and the front collision prevention beam 611. Illustratively, the second side member 613 and the third cross member 612 may be connected by integral molding, welding, screw connection, rivet connection, adhesive bonding, or FDS. The same is true for the second side member 613 and the front collision prevention beam 611, and the present application will not further describe it here.

[0098] Optionally, the first direction X is perpendicular to the second direction Y.

[0099] By installing the front collision prevention beam 611, the third cross member 612 and the two second side members 613, they combine with themselves or other members to form a roughly rectangular structure, which has good supporting stability and facilitates the arrangement of other structures.

[0100] In some embodiments, Front Cabin61 further includes two first torsion boxes 614, which are arranged opposite to each other along the second direction Y and connected to the two second side members 613 in one-to-one correspondence, and the first torsion boxes 614 are connected to the second side members 613 in one-to-one correspondence. Energy Cabin Framework 62, a third cross member 612 is connected to two first torsion boxes 614, Energy Cabin Framework 62.

[0101] The embodiment of the present application does not limit the manner of connection between the first torsion box 614 and the second side member 613, and for example, the first torsion box 614 is connected to the second side member 613 and the third cross member 612 using a combination of screw connection and adhesive. Alternatively, a combination of rivet connection and adhesive may be adopted, or a rivet connection may be used alone.

[0102] A first torsion box 614 is installed, and a second side member 613 is connected to the first torsion box 614. Energy Cabin Framework 62, by being removably connected to the second side member 613 and Energy Cabin Framework 62, the structural strength of the connection therewith can be significantly increased, and the structural reliability of the underbody 6 can be improved.

[0103] In some embodiments, Energy Cabin Framework 62 includes a floor 621, two first cross members 622 installed opposite each other along a first direction X, and two first side members 623 installed opposite each other along a second direction Y, the first side member 623 connects the two first cross members 622, the floor 621, the two first cross members 622 and the two first side members 623 form an accommodating cavity 624 for surrounding and accommodating the battery cells 5, and the two first torsion boxes 614 are detachably connected to the two first side members 623 in one-to-one correspondence.

[0104] The embodiment of the present application does not limit the manner of connection between the first torsion box 614 and the first side member 623. Illustratively, the first torsion box 614 and the first side member 623 may be connected by a screw connection or a rivet connection.

[0105] The first torsion box 614 and the first side member 623 are detachably connected, and the first side member 623 extends along the vertical direction, so that the connection with the first side member 623 extending in the vertical direction is more convenient than the connection with the first cross member 622.

[0106] In some embodiments, the first torsion box 614 includes a box body 615 and a connecting portion 616, the box body 615 is connected to the second side member 613, the connecting portion 616 includes a first wall 617 and a second wall 618 that are bent and connected together, the first wall 617 and the first side member 623 face each other in a second direction Y and are removably connected together, the second wall 618 and the first side member 623 face each other along a third direction Z and are removably connected together, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other two by two.

[0107] In the embodiment of the present application, the first wall 617 and the first side member 623 may be directly bonded together and then connected via fasteners 64 such as bolts, or may be connected after another buffer member is interposed between the first wall 617 and the first side member 623. The same is true for the second wall 618 and the first side member 623, and the present application will not further describe them here.

[0108] The first wall 617 in the embodiment of the present application is perpendicular to the second direction Y and the second wall 618 is perpendicular to the third direction Z.

[0109] The first torsion box 614 is installed to include a first wall 617 and a second wall 618 that are bent toward each other, and the first wall 617 and the second wall 618 are respectively connected to the first side member 623, i.e., the first torsion box 614 is connected to the first side member 623 in two directions, thereby greatly increasing the structural strength of the connection between the first torsion box 614 and the first side member 623 and improving the connection reliability.

[0110] In some embodiments, Front Cabin 61 further includes two shock absorber towers 619, which are connected to the two second side members 613 in one-to-one correspondence.

[0111] A shock absorber tower 619 may be provided on the second side member 613 to provide lateral support for offset collisions and also to provide support for the shock absorbers.

[0112] FIG. 6 shows an underbody of an embodiment of the present application. Rear cabin FIG.

[0113] As shown in FIG. 6, in some embodiments, Rear cabin 63 includes a rear collision prevention beam 631, a fourth cross member 632, and two third side members 633, the fourth cross member 632 and the rear collision prevention beam 631 are arranged opposite each other along a first direction X, and the two third side members 633 are arranged opposite each other along a second direction Y, and the third side member 633 is connected to the fourth cross member 632 and the rear collision prevention beam 631, and the second direction Y intersects the first direction X.

[0114] The embodiment of the present application does not limit the connection manner between the third side member 633 and the fourth cross member 632 and the rear collision prevention beam 631. Exemplarily, the third side member 633 and the fourth cross member 632 may be connected using the manner of integral molding, welding, screw connection, rivet connection, or FDS. Furthermore, after the above connection manner, they may be further connected using a structural adhesive. The same is true for the third side member 633 and the front collision prevention beam 611, and the present application will not further describe it here.

[0115] Optionally, the first direction X is perpendicular to the second direction Y.

[0116] By installing the rear collision prevention beam 631, the fourth cross member 632 and the two third side members 633, they form an approximately rectangular structure by themselves or combined with other members, which has good supporting stability and facilitates the arrangement of other structures.

[0117] In some embodiments, Rear cabin 63 further includes two second torsion boxes 634, the two second torsion boxes 634 are installed opposite each other along the second direction Y and connected to the two third side members 633 in one-to-one correspondence, and the second torsion boxes 634 are connected to the third side members 633 Energy Cabin Framework 62, a fourth cross member 632 is connected to two second torsion boxes 634, Energy Cabin Framework 62.

[0118] The embodiment of the present application does not limit the manner of connection between the second torsion box 634 and the third side member 633, and exemplarily, the second torsion box 634 and the third side member 633 or the fourth cross member 632 are connected using a combination of screw connection and adhesive. Alternatively, a combination of rivet connection and adhesive may be adopted, or a rivet connection may be used alone.

[0119] A second torsion box 634 is installed, and the third side member 633 is connected to the second torsion box 634. Energy Cabin Framework 62, by being removably connected to the third side member 633 and Energy Cabin Framework 62, the structural strength of the connection therewith can be significantly increased, and the structural reliability of the underbody 6 can be improved.

[0120] In some embodiments, Energy Cabin Framework 62 includes a floor 621, two first cross members 622 installed opposite each other along a first direction X, and two first side members 623 installed opposite each other along a second direction Y, the first side member 623 connects the two first cross members 622, the floor 621, the two first cross members 622 and the two first side members 623 form an accommodating cavity 624 for surrounding and accommodating the battery cells 5, and two second torsion boxes 634 are detachably connected to the two first side members 623 in one-to-one correspondence.

[0121] The embodiment of the present application does not limit the manner of connection between the second torsion box 634 and the first side member 623. Illustratively, the second torsion box 634 and the first side member 623 may be connected by a screw connection or a rivet connection.

[0122] The second torsion box 634 is detachably connected to the first side member 623, and the first side member 623 extends along the vertical direction, so that the connection to the first side member 623 extending in the vertical direction is more convenient than the method of connecting to the first cross member 622.

[0123] In some embodiments, the second torsion box 634 includes a box body 635 and a functional part 636, the box body 635 is connected to the third side member 633, the functional part 636 includes a third wall 637 and a fourth wall 638 that are bent and connected, the third wall 637 and the first side member 623 face each other in a second direction Y and are removably connected, the fourth wall 638 and the first side member 623 face each other along a third direction Z and are removably connected, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other two by two.

[0124] For example, the third wall 637 and the first side member 623 in the embodiment of the present application may be directly bonded together and then connected via fasteners 64 such as bolts, or may be connected after another buffer member is interposed between the third wall 637 and the first side member 623. The same is true for the fourth wall 638 and the first side member 623, and the present application will not further describe them here.

[0125] The third wall 637 in the embodiment of the present application is perpendicular to the second direction Y and the fourth wall 638 is perpendicular to the third direction Z.

[0126] The second torsion box 634 is installed to include a third wall 637 and a fourth wall 638 that are bent toward each other, and the third wall 637 and the fourth wall 638 are respectively connected to the first side member 623, i.e., the first torsion box 614 is connected to the first side member 623 in two directions, thereby greatly increasing the structural strength of the connection between the second torsion box 634 and the first side member 623 and improving the connection reliability.

[0127] In some embodiments, Rear cabin 63 further includes a fifth cross member 639 that is connected to the two box bodies 635 and is located at the end of the box body 635 closest to the third side member 633 .

[0128] For example, the fifth cross member 639 and the box body 635 may be connected by using a screw connection, a rivet connection, or a combination of a screw connection and an adhesive.

[0129] Install the fifth cross member 639, Rear cabin Further improves the structural stability and durability of the 63.

[0130] An embodiment of the present application further provides a skateboard chassis 8, including an underbody 6 and a battery cell 5, the battery cell 5 being: Energy Cabin Framework 62.

[0131] Optionally, the battery cell 5 is Energy Cabin Framework 62 is connected to floor 621 of 62.

[0132] In some embodiments, the skateboard chassis 8 further includes a guard 81 , the guard 81 and the first cross member 622 are connected to the first side member 623 and cover the opening of the receiving cavity 624 .

[0133] Illustratively, the guard 81 is connected to the first cross member 622 and the first side member 623 using a combination of a screw connection and a sealant. Optionally, the sealant is foam cotton.

[0134] Referring to FIG. 1 and FIG. 2, an embodiment of the present application provides an underbody 6, which includes: Front Cabin 61, Energy Cabin Framework 62, Rear cabin 63 and Energy Cabin Framework 62 is used to mount the battery cell 5; Front Cabin 61 and Rear cabin What is 63? Energy Cabin Framework 62, where Front Cabin 61 and Rear cabin 63 means either Energy Cabin Framework 62.

[0135] Although the present application has been described with reference to the preferred embodiments, various modifications may be made thereto and equivalents may be substituted for the components therein without departing from the scope of the present application, and in particular, each technical feature mentioned in each embodiment may be combined in any manner unless there is a structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims. [Explanation of symbols]

[0136] The symbols in the embodiments for carrying out the invention are as follows. 1. Vehicle 5. Battery cell 6. Underbody 61, Front Cabin 611, Front collision prevention beam 612, third cross member 613, second side member 614 - First Torsion Box 615, box body 616, connection part 617 - First Wall 618 - The second wall 619 - Shock absorber tower 62, Energy Cabin Framework 621, Floor 622, first cross member 623, first side member 624, containment cavity 625, second cross member 63, Rear cabin 631, Rear collision prevention beam 632, fourth cross member 633, third side member 634, second torsion box 635, box body 636, Functional section 637 - The Third Wall 638 - The Fourth Wall 639, fifth cross member 64, fasteners 7. Upper body 8. Skateboard chassis 81. Guard X, the first direction Y, the second direction Z, the third direction

Claims

1. An underbody of a vehicle comprising a cabin assembly, an intermediate assembly, and a bottom plate assembly, the intermediate assembly being used for mounting battery cells, the cabin assembly and the bottom plate assembly being connected to both ends of the intermediate assembly, and at least one of the cabin assembly and the bottom plate assembly being removably connected to the intermediate assembly.

2. The underbody of claim 1 , wherein both the cabin assembly and the base plate assembly are removably connected to the intermediate assembly.

3. The underbody of claim 1 or 2, wherein at least one of the cabin assembly and the bottom plate assembly is removably connected to the intermediate assembly via fasteners.

4. The intermediate assembly includes a floor, two first cross members disposed opposite each other along a first direction, and two first side members disposed opposite each other along a second direction, the first side members connecting the two first cross members, 4. The underbody according to claim 1, wherein the floor, the two first cross members and the two first side members collectively form an accommodation cavity for accommodating a battery cell, and the first direction intersects with the second direction.

5. The underbody of claim 4 , wherein the cabin assembly and the bottom plate assembly are removably connected to opposite ends of the first side member, respectively.

6. The vehicle further includes a second cross member, the second cross member being located between the two first cross members, and both ends of the second cross member being connected to the two first side members, respectively; The underbody of claim 4 , wherein the second cross member is used to connect the battery cells.

7. 7. The underbody of any one of claims 1 to 6, wherein the cabin assembly includes a front collision prevention beam, a third cross member, and two second side members, the third cross member and the front collision prevention beam being arranged opposite each other along a first direction, the two second side members being arranged opposite each other along a second direction, the second side members being connected to the third cross member and the front collision prevention beam, and the second direction intersecting the first direction.

8. The cabin assembly further includes two first torsion boxes, the two first torsion boxes being disposed opposite each other along the second direction and connected to two second side members in a one-to-one correspondence, the first torsion box being disposed on a side of the second side member closer to an intermediate assembly, and the third cross member being connected to the two first torsion boxes; The underbody of claim 7 , wherein the first torsion box is removably connected to the intermediate assembly.

9. the intermediate assembly includes a floor, two first cross members disposed opposite to each other along the first direction, and two first side members disposed opposite to each other along the second direction, the first side members connecting the two first cross members, the floor, the two first cross members and the two first side members surroundingly forming an accommodating cavity for accommodating a battery cell; The underbody according to claim 8 , wherein the two first torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

10. 10. The underbody of claim 9, wherein the first torsion box includes a box body and a connection portion, the box body is connected to the second side member, the connection portion includes a first wall body and a second wall body that are connected by folding, the first wall body and the first side member face each other in the second direction and are removably connected, the second wall body and the first side member face each other along a third direction and are removably connected, and the first direction, the second direction, and the third direction are perpendicular to each other two by two.

11. The underbody according to claim 7 , wherein the cabin assembly further includes two shock absorber towers, the two shock absorber towers being connected to the two second side members in a one-to-one correspondence.

12. 12. The underbody according to any one of claims 1 to 11, wherein the bottom plate assembly includes a rear collision prevention beam, a fourth cross member, and two third side members, the fourth cross member and the rear collision prevention beam being arranged opposite each other along a first direction, the two third side members being arranged opposite each other along a second direction, the third side member being connected to the fourth cross member and the rear collision prevention beam, and the second direction intersecting the first direction.

13. The bottom plate assembly further includes two second torsion boxes, the two second torsion boxes are installed opposite to each other along the second direction and connected to the two third side members in a one-to-one correspondence, the second torsion box is installed on a side of the third side member close to the intermediate assembly, and the fourth cross member is connected to the two second torsion boxes; The underbody of claim 12 , wherein the second torsion box is removably connected to the intermediate assembly.

14. the intermediate assembly includes a floor, two first cross members disposed opposite to each other along the first direction, and two first side members disposed opposite to each other along the second direction, the first side members connecting the two first cross members, the floor, the two first cross members and the two first side members surroundingly forming an accommodating cavity for accommodating a battery cell; The underbody according to claim 13 , wherein the two second torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

15. The underbody of claim 14, wherein the second torsion box includes a box body and a functional part, the box body is connected to the third side member, the functional part includes a third wall body and a fourth wall body that are connected by folding, the third wall body and the first side member face each other in the second direction and are removably connected, the fourth wall body and the first side member face each other along a third direction and are removably connected, and the first direction, the second direction and the third direction are perpendicular to each other two by two.

16. 16. The underbody of claim 15, wherein the bottom plate assembly further includes a fifth cross member, the fifth cross member being connected to the two box bodies and located at an end of the box body proximate to the third side member.

17. 1. A skateboard chassis, comprising: An underbody according to any one of claims 1 to 16; and a battery cell connected to the intermediate assembly.

18. A vehicle, An underbody according to any one of claims 1 to 16; and an upper body connected to the underbody.

19. 20. The vehicle of claim 18, wherein the upper body is removably connected to the underbody.

Images