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] This application relates to the field of vehicle technology, and particularly to an underbody, a skateboard chassis, and a vehicle.

Background Art

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

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

Summary of the Invention

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

[0005] According to a first aspect, this application provides an underbody of a vehicle, and this underbody Front cabin and Energy cabin framework and Rear cabin including, Energy cabin framework is used for mounting battery cells, Front cabin and Rear cabin are Energy cabin framework connected to both ends of, where Front cabin and Rear cabin at least one of Energy cabin framework is removably connected to.

[0006] In the above technical solution, Front cabin and Rear cabin at least one of Energy cabin framework is removably connected to, and thus, Front cabin , Rear cabin and Energy cabin framework Compared with the integrated structure, the underbody divided into two or three parts can be transported and stored respectively, that is, the flexibility of storage and transportation is higher, storage and transportation are more convenient, thereby reducing the costs of storage and transportation.

[0007] In some embodiments, Front cabin and Rear cabin In short, all of them Energy cabin framework It is detachably connected.

[0008] In the above technical proposal, Front cabin and Rear cabin and respectively Energy cabin framework The underbody is installed to be detachably connected, and in this way, the underbody is divided into three detachable parts, which is extremely convenient for transport and storage, as each of the three parts can be transported and stored separately, further reducing storage and transport costs.

[0009] In some embodiments, Front cabin and Rear cabin At least one of them is via a fastener Energy cabin framework It is detachably connected.

[0010] In the above technical proposal, Front cabin and Rear cabin This method achieves connection via fasteners, resulting in greater structural strength compared to removable connection methods such as locking, thereby improving the stability, reliability, and durability of the underbody.

[0011] In some embodiments, Energy cabin framework It includes a floor, two first cross members installed opposite each other along a first direction, and two first side members installed opposite each other along a second direction, the first side members connecting the two first cross members, and the floor, the two first cross members and the two first side members enclose and form a housing cavity for housing battery cells, the first direction intersects the second direction.

[0012] In the above technical proposal, Energy cabin frameworkBy installing it to include two first cross members and two first side members, a storage space for accommodating the battery cell together with the floor is limited. 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 both ends of the first side member respectively.

[0014] In the above technical solution, Front cabin and Rear cabin are installed to be connected to both ends of the first side member respectively, Front cabin , Energy cabin framework and Rear cabin are generally arranged in sequence along the vertical direction. Therefore, compared with the connection to the first cross member, the connection to the first side member extending in the vertical direction is more convenient. In addition, the first side member generally has relatively high rigidity and strength, and the reliability of the connection to the first side member is higher.

[0015] In some embodiments, the underbody further includes a second cross member. The second cross member is located between the two first cross members. Both ends of the second cross member are connected to the two first side members respectively. The second cross member is used to connect the battery cell.

[0016] In the above technical solution, the second cross member is connected to the battery cell, thereby playing a role in restricting the position of the battery cell at the connection point, reducing the size change range due to the expansion during the charge and discharge of the battery cell, and further extending the service life of the battery cell.

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

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

[0019] In some embodiments, Front cabin It further includes two first torsion boxes. The two first torsion boxes are installed opposite to each other along the second direction and are correspondingly connected to the two second side members one-to-one. The first torsion box is installed on the side of the second side member Energy cabin framework close to it. The third cross member is connected to the two first torsion boxes, and the first torsion box is Energy cabin framework removably connected to it.

[0020] In the above technical solution, by installing the first torsion box and removably connecting the second side member to it through the first torsion box, the structural strength of the connection between the second side member and Energy cabin framework can be significantly increased, and the structural reliability of the underbody can be improved. Energy cabin framework

[0021] Energy cabin framework In some embodiments, Energy cabin frameworkThe structure includes a floor, two first cross members installed opposite each other along a first direction, and two first side members installed 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 together form a housing cavity for housing battery cells, and two first torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

[0022] In the above proposed technology, the first torsion box and the first side member are detachably connected, and since the first side member extends along the longitudinal direction, connecting to the longitudinally extending first side member is more convenient than connecting to the first cross member.

[0023] In some embodiments, the first torsion box includes a box body and a connector, the box body being connected to a second side member, the connector including a first wall and a second wall that are bent and connected, the first wall and the first side member being opposite in a second direction and detachably connected, the second wall and the first side member being opposite along a third direction and detachably connected, the first direction, the second direction and the third direction being two-to-three perpendicular.

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

[0025] In some embodiments, Front cabin It further includes two shock absorber towers, the two shock absorber towers connected in a one-to-one correspondence to two second side members.

[0026] In the above proposed technology, by installing a shock absorber tower on the second side member, lateral support can be provided in offset collisions, and support can also be provided to the shock absorber.

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

[0028] In the above proposed design, a rear collision prevention beam, a fourth cross member, and two third side members are installed and, by combining them with other members or other components, form a substantially rectangular structure. This structure has good support stability and facilitates the arrangement of other structures.

[0029] In some embodiments, Rear cabin It further includes two second torsion boxes, the two second torsion boxes are installed opposite each other along the second direction and connected one-to-one with two third side members, and the second torsion boxes are connected to the third side members Energy cabin framework Located on the side closer to the second, the fourth cross member is connected to two second torsion boxes, and the second torsion boxes are Energy cabin framework It is detachably connected.

[0030] In the above proposed technology, a second torsion box is installed, and the third side member is connected via the second torsion box. Energy cabin framework By making it removable to connect to the third side member and Energy cabin framework This significantly increases the structural strength of the connection and improves the structural reliability of the underbody.

[0031] In some embodiments, Energy cabin framework The structure includes a floor, two first cross members installed opposite each other along a first direction, and two first side members installed 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 enclosing and forming a housing cavity for housing battery cells, and two second torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

[0032] In the above proposed design, the second torsion box and the first side member are detachably connected, and since the first side member extends along the longitudinal direction, connecting to the longitudinally extending first side member is more convenient compared to the proposed design for connecting to the first cross member.

[0033] In some embodiments, the second torsion box includes a box body and a functional section, the box body being connected to a third side member, and the functional section including a third wall and a fourth wall that are bent and connected, the third wall and the first side member being opposite in a second direction and detachably connected, and the fourth wall and the first side member being opposite along a third direction and detachably connected, the first direction, the second direction and the third direction being perpendicular to each other in pairs.

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

[0035] In some embodiments, Rear cabinIt further includes a fifth cross member, which is connected to the two box bodies and is located at the end of the box body closest to the third side member.

[0036] In the above technical proposal, a fifth cross member is installed. Rear cabin To further improve 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 comprising the underbody and battery cell of any one of the above embodiments, the battery cell is Energy cabin framework It connects to the network.

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

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

[0040] By making the upper and lower bodies detachably connected, separation, decoupling, and connection between the upper and lower bodies can be achieved. Furthermore, independent development of the upper and lower bodies is possible, allowing them to be replaced as needed, shortening the research and development cycle, and reducing costs. [Brief explanation of the drawing]

[0041] The following describes the features, advantages, and technical effects of exemplary embodiments of this application with reference to the drawings. [Figure 1] This is a schematic diagram of the structure of the vehicle according to the embodiment of this application. [Figure 2] This is a schematic diagram of the exploded structure of the underbody of an embodiment of this application. [Figure 3]This is a schematic diagram of the structure of the underbody energy cabin framework of an embodiment of this application. [Figure 4] This is a schematic diagram of the exploded structure of the underbody energy cabin framework, battery cells, and guard of an embodiment of the present application. [Figure 5] This is a schematic diagram of the structure of the front cabin of the underbody according to an embodiment of this application. [Figure 6] This is a schematic diagram of the structure of the rear cabin of the underbody of the embodiment of this application. In the drawing, the drawing is not drawn to the actual scale. [Modes for carrying out the invention]

[0042] To clarify the purpose, technical proposal, and advantages of the embodiments of this application, the following clearly and completely describes the technical proposal of the embodiments of this application, linking it with the drawings of the embodiments. Clearly, the embodiments described are only some, not all, embodiments of this application. All other embodiments derived from the embodiments of this application without the creative effort of a person skilled in the art are all within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as that commonly understood by those skilled in the art relating to this application. In this application, terms used in the specification are solely for the purpose of describing specific embodiments and are not intended to limit this application. The terms “includes” and “have,” and any variations thereof, in the description of the specification, claims, and drawings of this application are intended to intentionally cover the non-exclusive “includes.” Terms such as “first,” “second,” etc., in the specification, claims, or drawings of this application are not intended to describe a particular order or hierarchical relationship, but to distinguish different subjects.

[0044] The “Examples” as used in this application mean that certain features, structures, or characteristics described in conjunction with the Examples may be included in at least one Example of this application. The occurrence of this phrase in each location in the specification does not necessarily refer to the same Example, nor does it mean that each Example is mutually exclusive or alternative to the others.

[0045] In the description of this application, unless otherwise explicitly defined or limited, the terms “attachment,” “connection,” “connection,” and “installation” should be understood in a broad sense. For example, a fixed connection may be a detachable connection, an integral connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. A person skilled in the art will be able to understand the specific meaning of these terms in this application depending on the specific circumstances.

[0046] In this application, the terms "and / or" merely describe the relationship between related objects, indicating that three relationships are possible. For example, A and / or B may represent three cases: A alone, a combination of A and B, and B alone. In this application, the character " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship.

[0047] 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 are omitted in different embodiments. It should be understood that the dimensions such as thickness, length, and width of various components in the embodiments of this application shown in the drawings, and the overall dimensions such as thickness, length, and width of the integrated device, are illustrative and should not constitute any limitation to this application.

[0048] The term "multiple" as it appears in this application refers to two or more (including two).

[0049] In related technologies, the underbody of a vehicle is generally Front cabin and, Energy cabin framework and, Rear cabinIt includes three parts, and these three parts have a one-piece structure. The one-piece underbody can improve the vehicle's collision resistance by increasing the vehicle's rigidity.

[0050] However, the integrated underbody structure occupies a relatively large amount of space, resulting in relatively high transportation and storage costs.

[0051] In light of this, this application provides a technical proposal, which is, Front cabin and Rear cabin at least one of the following Energy cabin framework By connecting it detachably, Front cabin , Energy cabin framework and Rear cabin Separating at least two of the integrated structure facilitates transportation and storage, thereby reducing transportation and storage costs.

[0052] Figure 1 is a schematic diagram of the structure of a vehicle according to the embodiment of this application.

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

[0054] The embodiments of this application do not limit the method of connection between the upper body 7 and the underbody 6. Exemplarily, they may be connected by welding or a removable connection method.

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

[0056] Exemplary, the upper body 7 and the underbody 6 are detachably connected via a connecting member. The embodiments of this application do not limit the type of 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 some other examples the connecting member may include a buckle.

[0057] In the embodiments of this application, the upper body 7 is detachably connected to the underbody 6, enabling separation, decoupling, and connection of the upper body 7 and the underbody 6, as well as independent development of the upper body 7 and the underbody 6. This allows the upper body 7 and the underbody 6 to be interchangeable as needed, shortening the research and development cycle and reducing costs.

[0058] Figure 2 is a schematic diagram of the exploded structure of the underbody of the embodiment of this application.

[0059] As shown in Figure 2, the underbody 6 of the vehicle 1 in the embodiment of this application is Front cabin 61 and, Energy cabin framework 62 and, Rear cabin Including 63, Energy cabin framework 62 is used to mount battery cell 5, Front cabin 61 and Rear cabin 63 means, Energy cabin framework It is connected to both ends of 62, and here, Front cabin 61 and Rear cabin At least one of the 63 is Energy cabin framework It is detachably connected to 62.

[0060] The embodiments of this application are Front cabin 61 and Energy cabin framework 62, and Rear cabin 63 and Energy cabin framework The specific method of detachably connecting 62 is not limited, and examples of detachable connections may be achieved using methods such as locking, screw connections, and riveting.

[0061] Front cabin 61 and Rear cabin At least one of 63 Energy cabin framework Connect 62 detachably, like this, Front cabin 61, Rear cabin 63 and Energy cabin frameworkCompared to a structure that integrates 62 into a single unit, the underbody 6, which is divided into two or three parts, can be transported and stored separately, meaning that it offers greater flexibility in storage and transport, is more convenient, and thereby reduces storage and transport costs. Front cabin 61, Energy cabin framework 62 and Rear cabin 63 is detachably connected, Front cabin 61, Energy cabin framework 62 and Rear cabin It achieves 63 separations and connections, and further enables independent development by the three parties. Front cabin 61, Energy cabin framework 62 and Rear cabin By making component 63 replaceable according to demand, the research and development cycle can be shortened, and costs can be reduced.

[0062] In some embodiments, Front cabin 61 and Rear cabin 63 means all Energy cabin framework It is detachably connected to 62.

[0063] Front cabin 61 and Rear cabin 63 and each Energy cabin framework The underbody 6 is installed to be detachably connected to 62, and in this way the underbody 6 is divided into three detachable parts, which is extremely convenient for transport and storage, as each of the three parts can be transported and stored separately, further reducing storage and transport costs.

[0064] In some embodiments, Front cabin 61 and Rear cabin At least one of the 63s is connected via the fastener 64 Energy cabin framework It is detachably connected to 62.

[0065] The embodiments of this application do not limit the specific type of fastener 64. Exemplarily, the fastener 64 may be a bolt and nut component, or a connecting member such as a rivet.

[0066] Front cabin 61 and Rear cabin63 provides a connection via fasteners 64, and compared to removable connection methods such as locks, the structural strength of the connection is higher, thereby improving the stability, reliability, and durability of the underbody 6.

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

[0068] For example, there are multiple connecting members, and at least some of these connecting members are bolts.

[0069] Bolts are highly standardized and easy to replace. The bolt connection method is easy to attach and detach, contributing to improved assembly efficiency.

[0070] Compared to process connection methods such as rotary tapping rivets (FDS) and self-piercing rivets (SPR), using bolt connections allows for... Front cabin 61, Energy cabin framework 62 and Rear cabin It is possible to achieve decoupling of 63 physical structures.

[0071] Figure 3 shows the underbody of an embodiment of this application. Energy cabin framework Figure 4 is a schematic diagram of the structure of the underbody of the embodiment of this application. Energy cabin framework This is a schematic diagram of the disassembled structure of the battery cell and guard.

[0072] As shown in Figures 3 and 4, in some embodiments, Energy cabin framework 62 includes a floor 621, two first cross members 622 installed opposite to each other along a first direction X, and two first side members 623 installed opposite to each other along a second direction Y, the first side members 623 connecting the two first cross members 622, and the floor 621, the two first cross members 622 and the two first side members 623 enclose and form a housing cavity 624 for housing the battery cell 5, the first direction X intersects the second direction Y.

[0073] The floor 621 of the embodiment of this application may be used as the floor 621 of a vehicle 1. Selectively, the floor 621 is used to connect the battery cells 5. More selectively, the battery cells 5 are bonded to the floor 621.

[0074] Exemplary, the two first cross members 622 and the two first side members 623 of the embodiment of this application may be alternately installed and coaxially connected, the first side members 623 may extend beyond the first cross members 622 along their longitudinal direction, and the first cross members 622 may extend beyond the first side members 623 along their longitudinal direction.

[0075] The embodiments of this application do not limit whether the structures of the two first cross members 622 are the same, and the structures of the two first cross members 622 may be the same or different. The same applies to the first side members 623, which are not described further hereinafter in this application.

[0076] Selectively, 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, a housing space for housing the battery cell 5 is defined together with the floor 621. This installation method is easy to manufacture and can form a relatively large housing space.

[0078] In some selective embodiments, the two first cross members 622 and the two first side members 623 are connected by welding.

[0079] In some selective embodiments, a sealing material 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 sealing foam cotton or sealant.

[0081] In some selective embodiments, two first cross members 622 and two first side members 623 each provide connection to the floor 621 via connecting members.

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

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

[0084] In the embodiments of this application, Front cabin 61 is detachably connected to the same-side ends of the two first side members 623, Rear cabin 63 is removably connected to the other two co-side ends of the two first side members 623.

[0085] Selectively, Front cabin 61, Energy cabin framework and Rear cabin 63 is installed sequentially along the first direction X.

[0086] Front cabin 61 and Rear cabin 63 and are 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 members 63 are generally arranged sequentially along the longitudinal direction, connecting to the longitudinally extending first side member 623 is more convenient than connecting to the first cross member 622. In addition, the first side member 623 generally has relatively high rigidity and strength, and the reliability of connecting to the first side member 623 is higher.

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

[0088] The second cross member 625 of the embodiment of this application is located in the housing cavity 624.

[0089] Selectively, the second crossmember 625 is parallel to the first crossmember 622.

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

[0091] The embodiments of this application do not limit the method of connection between the battery cell 5 and the second cross member 625. Exemplarily, the battery cell 5 is bonded to the second cross member 625.

[0092] The embodiments of this application do not limit the method of connection between the second cross member 625 and the first side member 623. For example, they may be connected by screw connections or welding.

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

[0094] Selectively, 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 size-limiting effect becomes more apparent.

[0095] Figure 5 shows the underbody of an embodiment of this application. Front cabin This is a schematic diagram of the structure.

[0096] As shown in Figure 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, wherein the third cross member 612 and the front collision prevention beam 611 are installed opposite each other along a first direction X, and the two second side members 613 are installed opposite each other along a second direction Y, and 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 the first direction X.

[0097] The embodiments of this application do not limit the method of connection between the second side member 613, the third cross member 612, and the front anti-collision beam 611. For example, the second side member 613 and the third cross member 612 may be connected by integral molding, welding, screw connection, riveting, bonding, or FDS. The same applies to the second side member 613 and the front anti-collision beam 611, which are not described further in this application.

[0098] Selectively, 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 form a substantially rectangular structure by connecting themselves or with other members, and this structure has good support stability and facilitates the arrangement of other structures.

[0100] In some embodiments, Front cabin61 further includes two first torsion boxes 614, the two first torsion boxes 614 are installed opposite each other along a second direction Y and connected one-to-one with two second side members 613, the first torsion boxes 614 are connected to the second side members 613 Energy cabin framework Located on the side closer to 62, the third cross member 612 is connected to two first torsion boxes 614, and the first torsion boxes 614 are Energy cabin framework It is detachably connected to 62.

[0101] The embodiments of this application do not limit the method of connection between the first torsion box 614 and the second side member 613. For example, the first torsion box 614, the second side member 613, and the third cross member 612 are connected using a combination of screw connection and adhesive bonding. Alternatively, a combination of rivet connection and adhesive bonding may be used, or rivet connection may be used alone.

[0102] The first torsion box 614 is installed, and the second side member 613 is connected via the first torsion box 614. Energy cabin framework By detachably connecting to 62, the second side member 613 and Energy cabin framework This significantly increases the structural strength of the connection with 62, thereby improving the structural reliability of the underbody 6.

[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 members 623 connecting the two first cross members 622, the floor 621, the two first cross members 622 and the two first side members 623 enclosing and forming a housing cavity 624 for housing the battery cell 5, and two first torsion boxes 614 are detachably connected to the two first side members 623 in a one-to-one correspondence.

[0104] The embodiments of this application do not limit the method of connection between the first torsion box 614 and the first side member 623. For example, the first torsion box 614 and the first side member 623 may be connected by screw connections or rivet connections.

[0105] The first torsion box 614 and the first side member 623 are detachably connected, and since the first side member 623 extends along the longitudinal direction, connecting to the longitudinally extending first side member 623 is more convenient than connecting to the first cross member 622.

[0106] In some embodiments, the first torsion box 614 includes a box body 615 and a connector 616, the box body 615 being connected to a second side member 613, and the connector 616 including a first wall 617 and a second wall 618 that are bent and connected, the first wall 617 and the first side member 623 being opposite each other in a second direction Y and detachably connected, the second wall 618 and the first side member 623 being opposite each other along a third direction Z, the first direction X, the second direction Y and the third direction Z being perpendicular in pairs.

[0107] In the embodiments of this application, the first wall 617 and the first side member 623 may be connected via fasteners 64 such as bolts after direct bonding, or they may be connected after interposing other buffer members between them. The same applies to the second wall 618 and the first side member 623, and this application will not describe them further here.

[0108] In the embodiment of this application, the first wall 617 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 each connected to the first side member 623, that is, the first torsion box 614 is connected to the first side member 623 in two directions, thereby significantly increasing the structural strength of the connection between the first torsion box 614 and the first side member 623 and improving connection reliability.

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

[0111] By installing the shock absorber tower 619 on the second side member 613, lateral support can be provided in offset collisions, and support can also be provided to the shock absorber.

[0112] Figure 6 shows the underbody of an embodiment of this application. Rear cabin This is a schematic diagram of the structure.

[0113] As shown in Figure 6, in several embodiments, Rear cabin 63 includes a rear anti-collision beam 631, a fourth cross member 632, and two third side members 633, wherein the fourth cross member 632 and the rear anti-collision beam 631 are installed opposite each other along a first direction X, the two third side members 633 are installed opposite each other along a second direction Y, the third side members 633 are connected to the fourth cross member 632 and the rear anti-collision beam 631, and the second direction Y intersects the first direction X.

[0114] The embodiments of this application are not limited to the method of connecting the third side member 633 to the fourth cross member 632 and the rear anti-collision beam 631. For example, the third side member 633 and the fourth cross member 632 may be connected by integral molding, welding, screw connection, riveting, or FDS. Furthermore, after the above connection methods, they may be further connected using structural adhesive. The same applies to the third side member 633 and the front anti-collision beam 611, which are not described further in this application.

[0115] Selectively, 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 a substantially rectangular structure by connecting themselves or with other members, and this structure has good support 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 a second direction Y and connected one-to-one to two third side members 633, the second torsion boxes 634 are connected to the third side members 633 Energy cabin framework Located on the side closer to 62, the fourth cross member 632 is connected to two second torsion boxes 634, and the second torsion boxes 634 are Energy cabin framework It is detachably connected to 62.

[0118] The embodiments of this application do not limit the method of connection between the second torsion box 634 and the third side member 633. For example, the second torsion box 634 and the third side member 633 or the fourth cross member 632 may be connected using a combination of screw connection and adhesive. Alternatively, a combination of rivet connection and adhesive may be used, or rivet connection may be used alone.

[0119] A second torsion box 634 is installed, and the third side member 633 is connected via the second torsion box 634. Energy cabin framework By detachably connecting to 62, the third side member 633 and Energy cabin framework This significantly increases the structural strength of the connection with 62, thereby improving the structural reliability of the underbody 6.

[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 members 623 connecting the two first cross members 622, the floor 621, the two first cross members 622 and the two first side members 623 together form a housing cavity 624 for housing the battery cell 5, and two second torsion boxes 634 are detachably connected to the two first side members 623 in a one-to-one correspondence.

[0121] The embodiments of this application do not limit the method of connection between the second torsion box 634 and the first side member 623. For example, the second torsion box 634 and the first side member 623 may be connected by screw connections or rivet connections.

[0122] The second torsion box 634 and the first side member 623 are detachably connected, and since the first side member 623 extends along the longitudinal direction, connecting to the longitudinally extending first side member 623 is more convenient compared to connecting to the first cross member 622.

[0123] In some embodiments, the second torsion box 634 includes a box body 635 and a functional section 636, the box body 635 being connected to a third side member 633, and the functional section 636 including a third wall 637 and a fourth wall 638 that are bent and connected, the third wall 637 and the first side member 623 being opposite each other in the second direction Y, and the fourth wall 638 and the first side member 623 being opposite each other along the third direction Z, with the first direction X, the second direction Y and the third direction Z being perpendicular in pairs.

[0124] For example, the third wall 637 and the first side member 623 in the embodiments of this application may be connected via fasteners 64 such as bolts after direct bonding, or they may be connected after interposing other buffer members between the third wall 637 and the first side member 623. The same applies to the fourth wall 638 and the first side member 623, which are not described further in this application.

[0125] In the embodiment of this application, the third wall 637 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 connected to the first side member 623, respectively. In other words, the first torsion box 614 is connected to the first side member 623 in two directions, thereby significantly increasing the structural strength of the connection between the second torsion box 634 and the first side member 623 and improving connection reliability.

[0127] In some embodiments, Rear cabin 63 further includes a fifth cross member 639, which 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 using screw connections, rivet connections, or a combination of screw connections and adhesive.

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

[0130] Embodiments of this application further provide a skateboard chassis 8 comprising an underbody 6 and a battery cell 5, the battery cell 5 being Energy cabin framework It connects to port 62.

[0131] Selectively, battery cell 5 is Energy cabin framework It connects to floor 621 of floor 62.

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

[0133] For example, the guard 81 and the first cross member 622 and the first side member 623 are connected using a method that combines screw connections and a sealing material. Optionally, the sealing material is foamed cotton.

[0134] Referring to Figures 1 and 2, the embodiment of this application provides an underbody 6, the underbody 6 is, Front cabin 61 and, Energy cabin framework 62 and, Rear cabin Including 63, Energy cabin framework 62 is used to mount battery cell 5, Front cabin 61 and Rear cabin 63 means, Energy cabin framework It is connected to both ends of 62, and here, Front cabin 61 and Rear cabin 63 means all Energy cabin framework It is detachably connected to 62.

[0135] While this application has been described with reference to preferred embodiments, various improvements can be made thereto, and components therein can be replaced with equivalents without departing from the scope of this application. In particular, each technical feature referred to in each embodiment may be combined in any way, provided that no structural conflicts exist. This application is not limited to the specific embodiments disclosed herein, but includes all technical ideas that fall within the scope of the claims. [Explanation of Symbols]

[0136] The reference numerals for the embodiments of the invention are as follows: 1. Vehicle 5. Battery cell 6. Underbody 61, Front cabin 611, Front collision prevention beam 612, Third Crossmember 613, Second Side Member 614, First Torsion Box 615, Box body 616, connection part 617, The First Wall 618, The Second Wall 619, Shock absorber tower 62, Energy cabin framework 621, floor 622, First Crossmember 623, First Side Member 624, Enclosure Cavity 625, Second Crossmember 63, Rear cabin 631, Rear collision prevention beam 632, Fourth Crossmember 633, Third Side Member 634, Second Torsion Box 635, Box body 636, Functional parts 637, The Third Wall 638, The Fourth Wall 639, Fifth Crossmember 64. Fasteners 7. Upper body 8. Skateboard chassis 81, Guard X, first direction Y, second direction Z, third direction

Claims

1. A vehicle underbody comprising a front cabin, an energy cabin framework, and a rear cabin, wherein the energy cabin framework is used to mount battery cells and form an energy cabin, and the front cabin and / or the rear cabin can be detachably connected to both ends of the energy cabin framework. The energy cabin framework includes two first cross members installed opposite each other along a first direction and two first side members installed opposite each other along a second direction, the first side members connecting the two first cross members, The two first cross members and the two first side members surround and form a housing cavity for housing a battery cell, and the first direction intersects the second direction. The underbody of a vehicle is characterized in that the front cabin and the rear cabin are each detachably connected to both ends of the first side member.

2. The underbody according to claim 1, wherein the underbody has an assembled state and a disassembled state, in the assembled state the front cabin and the rear cabin are fixedly connected to both ends of the energy cabin framework, and in the disassembled state the front cabin, the rear cabin and the energy cabin framework are installed separately.

3. The underbody according to claim 1 or 2, characterized in that both the front cabin and the rear cabin are detachably connected to the energy cabin framework.

4. The underbody according to claim 1 or 2, characterized in that at least one of the front cabin and the rear cabin is removably connected to the energy cabin framework via fasteners.

5. The underbody according to claim 1 or 2, wherein at least one of the front cabin and the rear cabin includes a first connection, the energy cabin framework includes a second connection, and the first connection and the second connection are stacked and connected in the height direction of the vehicle.

6. The underbody according to claim 5, characterized in that, in the height direction, the second connection portion of the vehicle is located below the first connection portion.

7. The underbody according to claim 5, further comprising a fastener, wherein both the first connecting portion and the second connecting portion are provided with connecting holes that penetrate along the height direction, and the fastener passes through the connecting holes to fix the first connecting portion and the second connecting portion.

8. The underbody according to claim 1 or 2, wherein the energy cabin framework further includes a floor, the floor being connected to the first cross member and the first side member and located above the housing cavity.

9. The underbody according to claim 8, characterized in that the battery cell is used to be mounted on the underside of the floor.

10. The energy cabin framework further includes a bottom plate, the bottom plate being connected to the first cross member and the first side member and located below the housing cavity, The underbody according to claim 1 or 2, characterized in that the battery cell is used to be mounted on the upper side of the bottom plate.

11. Further including a second cross member, the second cross member is located between the two first cross members, and both ends of the second cross member are each connected to the two first side members. The underbody according to claim 1 or 2, characterized in that the second cross member is used to connect the battery cells.

12. The underbody according to claim 1 or 2, wherein the front cabin 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 installed opposite each other along a first direction, the two second side members being installed 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 intersects the first direction.

13. The front cabin further includes two first torsion boxes, the two first torsion boxes are positioned opposite each other along the second direction and connected one-to-one with two second side members, the first torsion boxes are positioned on the side of the second side members closer to the energy cabin framework, and the third cross member is connected to the two first torsion boxes. The underbody according to claim 12, characterized in that the first torsion box is detachably connected to the energy cabin framework.

14. The energy cabin framework includes two first cross members positioned opposite each other along the first direction and two first side members positioned opposite each other along the second direction, the first side members connecting the two first cross members, and the two first cross members and the two first side members enclosing each other to form a housing cavity for housing battery cells. The underbody according to claim 13, characterized in that the two first torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

15. The underbody according to claim 14, wherein the first torsion box includes a box body and a connecting portion, the box body is connected to the second side member, the connecting portion includes a first wall and a second wall that are bent and connected, the first wall and the first side member are opposite each other in the second direction and are detachably connected, the second wall and the first side member are opposite each other along the third direction and are detachably connected, and the first direction, the second direction and the third direction are perpendicular to each other in pairs.

16. The underbody according to claim 12, wherein the front cabin further includes two shock absorber towers, the two shock absorber towers being connected in a one-to-one correspondence to two of the second side members.

17. The underbody according to claim 1 or 2, wherein the 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 being installed opposite each other along a first direction, the two third side members being installed opposite each other along a second direction, the third side members being connected to the fourth cross member and the rear collision prevention beam, and the second direction intersects the first direction.

18. The rear cabin further includes two second torsion boxes, the two second torsion boxes are positioned opposite each other along the second direction and connected one-to-one with two third side members, the second torsion boxes are positioned on the side of the third side members closer to the energy cabin framework, and the fourth cross member is connected to the two second torsion boxes. The underbody according to claim 17, characterized in that the second torsion box is detachably connected to the energy cabin framework.

19. The energy cabin framework includes two first cross members positioned opposite each other along the first direction and two first side members positioned opposite each other along the second direction, the first side members connecting the two first cross members, and the two first cross members and the two first side members enclosing each other to form a housing cavity for housing battery cells. The underbody according to claim 18, characterized in that the two second torsion boxes are detachably connected to the two first side members in a one-to-one correspondence.

20. The underbody according to claim 19, wherein the second torsion box includes a box body and a functional section, the box body is connected to the third side member, the functional section includes a third wall and a fourth wall that are bent and connected, the third wall and the first side member are opposite each other in the second direction and are detachably connected, the fourth wall and the first side member are opposite each other along the third direction and are detachably connected, and the first direction, the second direction and the third direction are perpendicular to each other in pairs.

21. The underbody according to claim 20, wherein the rear cabin further includes a fifth cross member, the fifth cross member being connected to two of the box bodies and installed at the end of the box body closest to the third side member.

22. It is a skateboard chassis, The underbody according to claim 1 or 2, A skateboard chassis characterized by including a battery cell connected to the aforementioned energy cabin framework.

23. It is a vehicle, The underbody according to claim 1 or 2, A vehicle characterized by including an upper body connected to the underbody.

24. The vehicle according to claim 23, characterized in that the upper body is detachably connected to the underbody.

25. A method for manufacturing a skateboard chassis according to claim 22, To provide an energy cabin framework and to install battery cells within the energy cabin framework, Connecting the aforementioned energy cabin framework to the front cabin, A method for manufacturing a skateboard chassis, characterized by connecting the rear cabin to the side of the energy cabin framework that is away from the front cabin.

Images