Vehicle body structure, chassis and vehicle

Abstract

Provided are a vehicle body structure (100), a chassis, and a vehicle (1000). The vehicle body structure (100) comprises: an energy bin (10) comprising a plurality of first beams (11) and a bottom plate (12), the plurality of first beams (11) successively being connected to each other in the circumferential direction of the bottom plate (12) and forming an accommodating cavity (13) together with the bottom plate (12), and the accommodating cavity (13) being used for accommodating a battery cell (40); connectors (20) arranged at joints of every two first beams (11) adjacent in the circumferential direction and connected to the two first beams (11); and a second beam (30) arranged in the accommodating cavity (13), at least one end of the second beam (30) being connected to a connector (20). The vehicle body structure (100) can improve structural strength and stiffness, thereby improving reliability.

Description

Body structure, chassis and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410002111.X, filed on January 2, 2024, entitled “Body Structure, Chassis and Vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of new energy vehicles, and in particular to a body structure, chassis and vehicle. Background Art

[0004] With the development of new energy technologies, users have put forward increasingly higher requirements on the performance of new energy vehicles in terms of lightweight, ride comfort, safety, etc.

[0005] The vehicle body is a key load-bearing and protective component, and in new energy vehicles, it often also houses the batteries. Its structural strength significantly impacts vehicle safety. Improving the strength and rigidity of the body structure that houses the batteries is a key research area in new energy vehicles.

[0006] Summary of the Invention

[0007] The present application provides a vehicle body structure, a battery, and an electrical device, which can improve structural strength, rigidity, and reliability.

[0008] In the first aspect, the present application provides a vehicle body structure, including: an energy bin, including a plurality of first beams and a bottom plate, the plurality of first beams being connected in sequence along the circumference of the bottom plate and enclosing the bottom plate to form a accommodating cavity, which can be used to accommodate batteries; a joint, arranged at the connection of two circumferentially adjacent first beams and connected to the two first beams; a second beam, arranged in the accommodating cavity, and at least one end of the second beam being connected to the joint.

[0009] The vehicle body structure provided in the embodiments of the present application first includes an energy compartment comprising a base plate and a plurality of sequentially connected first beams, the energy compartment comprising a cavity for accommodating battery cells. The energy compartment also includes a joint connecting two adjacent first beams. Furthermore, the energy compartment also includes a second beam, at least one end of which is connected to the joint. The combination of the joint and the second beam strengthens the rigidity and strength of the joint and the overall vehicle body structure, thereby improving the reliability of the vehicle body structure.

[0010] According to some embodiments of the present application, the joint includes a first connecting end and a second connecting end connected to each other, wherein the extension direction of the first connecting end intersects the extension direction of the second connecting end; the first beam includes a first support beam and a second support beam alternately connected end to end, wherein one of the first connecting end and the second connecting end is detachably connected to the first support beam, and the other of the first connecting end and the second connecting end is detachably connected to the second support beam. A joint is provided between two adjacent first beams, and the two connecting ends of the joint are respectively connected to the two beams, and can adopt an angle that is compatible with the first beams and ensures a stable connection.

[0011] According to some embodiments of the present application, the joint further includes a first reinforcing rib, at least one of which is connected between the first connection end and the second connection end. The first reinforcing rib is connected between the two connection ends of the joint, which can further improve the structural strength of the joint.

[0012] According to some embodiments of the present application, the thickness of the first connecting end, the second connecting end, and the first reinforcing rib is 3 mm to 8 mm. Providing the connecting end and the reinforcing rib in a suitable thickness direction can improve strength and reduce cost.

[0013] According to some embodiments of the present application, the first beam includes two first support beams extending along a first direction and two second support beams extending along a second direction, where the first direction intersects the second direction; the vehicle body structure includes two joints symmetrically arranged in the first direction and a second beam extending along the first direction and connected between the two joints; or the vehicle body structure includes two joints symmetrically arranged in the second direction and a second beam extending along the second direction and connected between the two joints. The vehicle body structure can have two joints symmetrically arranged in the first direction, and both ends of the second beam can be connected to the joints, thereby further improving the overall strength of the vehicle body structure.

[0014] According to some embodiments of the present application, the joint further includes a connecting boss, which extends from one of the first connecting end and the second connecting end, away from the first beam, toward the center of the accommodating cavity, and is at least partially inserted into the second beam. The joint may be provided with a boss, and inserting the boss into the second beam can improve the connection strength between the joint and the second beam.

[0015] According to some embodiments of the present application, the connecting boss has a connecting groove with an opening toward the accommodating cavity; the second beam includes a reinforcing portion whose shape matches the connecting groove and is at least partially inserted into the connecting groove. Providing matching connecting structures on the second beam and the joint can further stabilize the connection.

[0016] According to some embodiments of the present application, the connecting boss further includes a first connecting hole, the extension direction of the first connecting hole intersecting the extension direction of the second beam, and the plurality of first connecting holes are located on opposite sides of the connecting groove in the extension direction of the connecting boss; the second beam has a second connecting hole corresponding to the first connecting hole, and the joint further includes a fastener that passes through both the first connecting hole and the second connecting hole. The connecting boss and the second beam in the joint can be connected by the fastener that passes through both, thereby improving the structural stability of the connected two and facilitating assembly and disassembly.

[0017] According to some embodiments of the present application, the joint includes a first connecting end and a second connecting end connected to each other, each of which is provided with a third connecting hole; a connecting boss is provided on the second connecting end, and the third connecting holes located at the second connecting end are located on opposite sides of the connecting boss. The connecting holes connecting the connecting end of the joint to the first beam can be located on opposite sides of the connecting boss to stabilize the relative position of the second beam to the first beam when the second beam is connected.

[0018] According to some embodiments of the present application, the connecting groove has a rectangular cross-section, and the reinforcement portion includes a plurality of second reinforcing ribs extending in the same direction as the second beam. The plurality of second reinforcing ribs at least partially abut against opposing sidewalls of the connecting groove. The reinforcement portion can be in the form of reinforcing ribs abutting against the sidewalls of the connecting groove in the connecting boss, thereby preventing the second beam from shaking and maintaining a relatively light weight.

[0019] According to some embodiments of the present application, the second beam covers the connecting boss. By completely covering the connecting boss, the connection strength between the second beam and the joint can be further improved and the possibility of the connecting boss being damaged by external impact can be reduced.

[0020] In a second aspect, the present application provides a chassis comprising: the vehicle body structure in any embodiment of the first aspect, and a battery cell accommodated in a accommodating cavity.

[0021] In a third aspect, the present application provides a vehicle comprising the chassis of any embodiment of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0023] FIG1 is a simplified schematic diagram of a vehicle provided in one embodiment of the present application;

[0024] FIG2 is a schematic structural diagram of a vehicle body structure provided by one embodiment of the present application;

[0025] FIG3 is an exploded schematic diagram of a vehicle body structure provided by one embodiment of the present application;

[0026] FIG4 is a schematic structural diagram of a connector provided in one embodiment of the present application;

[0027] FIG5 is an enlarged view of area P in FIG1 ;

[0028] FIG6 is a cross-sectional view taken along line AA′ in FIG5 .

[0029] Reference numerals:

[0030] 1000-vehicles;

[0031] 100-body structure; 200-battery;

[0032] 10-Energy chamber; 20-Connector; 30-Second beam; 40-Battery cell;

[0033] 11-first beam; 12-bottom plate; 13-accommodation cavity; 21-first connecting end; 22-second connecting end; 23-first reinforcing rib; 24-connecting boss; 25-third connecting hole; 26-fastener; 31-reinforcement portion; 32-second connecting hole;

[0034] 111 - first support beam; 112 - second support beam; 241 - connection groove; 242 - first connection hole; 311 - second reinforcement rib;

[0035] X-first direction; Y-second direction. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0039] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0044] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0045] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0046] In existing CTC (Cell to Chassis) technology, battery cells are typically assembled with other components of the chassis assembly to form a battery. Some components of the chassis assembly serve as part of the battery housing to improve chassis space utilization, facilitate the installation of more battery cells, and increase battery energy storage. However, CTC technology suffers from insufficient rigidity after the chassis assembly is complete.

[0047] In view of this, an embodiment of the present application provides a technical solution, which improves the strength and rigidity of the part of the vehicle body structure used to accommodate the battery cell by setting a joint between two adjacent side beams of the energy bin and setting an expansion beam with at least one end connected to the joint.

[0048] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries, such as mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys and electric tools, etc., among which spacecraft include airplanes, rockets, space shuttles and spacecraft, etc., electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers.

[0049] The battery and vehicle body structure described in the embodiments of the present application are not limited to being applicable to the electrical devices described above, but for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0050] Please refer to Figure 1, which is a simplified schematic diagram of a vehicle 1000 provided in an embodiment of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery 200 can be installed inside vehicle 1000. Specifically, for example, battery 200 can be installed at the bottom, front, or rear of vehicle 1000. Battery 200 can be used to power vehicle 1000. For example, battery 200 can serve as an operating power source for vehicle 1000. Vehicle 1000 can also include a body structure 100, a controller, and a motor. Body structure 100 can, for example, integrate the functions of accommodating battery 200 and serving as part of the chassis support structure. The controller is used, for example, to control battery 200 to power the motor. The battery can be used for starting and navigation of vehicle 1000. Of course, battery 200 can also be used to drive vehicle 1000, replacing or partially replacing fuel or natural gas to provide power for vehicle 1000.

[0051] Furthermore, the battery 200 may include a plurality of battery cells 40, which may be housed in the vehicle body structure 100. In the battery 200, there may be one or more battery cells 40. If there are multiple battery cells 40, the multiple battery cells 40 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that the multiple battery cells 40 are connected in both series and in parallel. The multiple battery cells 40 may be directly connected in series, in parallel, or in a hybrid connection, and then the whole formed by the multiple battery cells 40 may be housed in the vehicle body structure 100. Of course, the multiple battery cells 40 may also be first connected in series, in parallel, or in a hybrid connection to form a battery module, and the multiple battery modules may then be connected in series, in parallel, or in a hybrid connection to form a whole, and then housed in the vehicle body structure 100.

[0052] Please refer to Figures 2 and 3 together. Figure 2 is a structural schematic diagram of a vehicle body structure provided by an embodiment of the present application, and Figure 3 is an exploded schematic diagram of a vehicle body structure provided by an embodiment of the present application.

[0053] In the first aspect, the present application provides a vehicle body structure 100, including: an energy bin 10, a joint 20 and a second beam 30. The energy bin 10 includes multiple first beams 11 and a bottom plate 12. The multiple first beams 11 are connected in sequence along the circumference of the bottom plate 12 and are enclosed with the bottom plate 12 to form a accommodating cavity 13. The accommodating cavity 13 is used to accommodate battery cells 40; the joint 20 is arranged at the connection of two first beams 11 adjacent to each other in the circumferential direction and is connected to the two first beams 11; the second beam 30 is arranged in the accommodating cavity 13, and at least one end of the second beam 30 is connected to the joint 20.

[0054] The present embodiment provides a vehicle body structure 100, including an energy storage chamber 10 as a main containment structure, and a joint 20 and a second beam 30 disposed within the energy storage chamber 10 for enhancing structural strength. Specifically, the energy storage chamber 10 includes a base plate 12 and a plurality of sequentially connected first beams 11. These first beams 11 can enclose and form the side walls of a containment chamber 13, and the base plate 12 can serve as the bottom wall of the containment chamber 13. In other words, the depth of the containment chamber 13 is related to the width of the first beams 11, and the cross-sectional area of ​​the containment chamber 13 is related to the area of ​​the base plate 12.

[0055] It is understood that the number of first beams 11 and the shape they form can be designed based on the spatial shape of the vehicle body structure 100 to be installed and its own strength requirements. Furthermore, the shape of the base plate 12 should match the shape formed by the first beams 11. The accommodating cavity 13 formed by the first beams 11 should have a certain degree of sealing. On this basis, the first beams 11 and the base plate 12 can be connected using fasteners such as bolts and nuts, or alternatively, blind rivets, flow drill screws, and the like.

[0056] On this basis, the joint 20 can be located in the accommodating cavity 13 and provided at the connection between adjacent first beams 11. With the first beams 11 connected end to end in a ring shape, the joint 20 simultaneously connects two adjacent first beams 11, effectively improving the connection strength between the two first beams 11. It is understood that the angle between the end faces of the joint 20 connected to the two first beams 11 should be compatible with the angle between the adjacent first beams 11.

[0057] The second beam 30 is disposed in the accommodating cavity 13, and at least one end of the second beam 30 is connected to the joint 20. Optionally, the other end can be connected to the first beam 11 on the opposite side. The second beam 30 supports the energy bin 10 from the inside, and the accommodating cavity 13 can be divided into different areas by adjusting the setting position of the second beam 30. The width of the second beam 30 can be the same as or slightly smaller than the width of the first beam 11. Connecting one end of the second beam 30 to the joint 20 can make the relative position between the second beam 30 and the first beam 11 more stable with the assistance of the joint 20, thereby improving the overall structural strength of the vehicle body structure 100.

[0058] In other embodiments, two second beams 30 may also be included, and both ends of each second beam 30 are respectively connected to a joint 20. In this case, the two second beams 30 can extend parallel to each other and provide support in the opposite side end areas of the accommodating cavity 13.

[0059] The accommodating cavity 13 in the embodiment of the present application can be used as a structure to accommodate the battery cells 40, that is, a portion of the vehicle body structure 100 can be used as a battery box. The connector 20 and the second beam 30 are both disposed within the accommodating cavity 13 and can serve as support components to enhance structural strength. The second beam 30 can also be an expansion beam, supporting the first beam 11 while also being able to withstand the expansion force generated by the expansion of the battery cells 40.

[0060] Please refer to Figure 4, which is a schematic diagram of the structure of a joint provided in one embodiment of the present application. In some optional embodiments, the joint 20 includes a first connecting end 21 and a second connecting end 22 connected to each other, with the extension direction of the first connecting end 21 intersecting the extension direction of the second connecting end 22; the plurality of first beams 11 include first support beams 111 and second support beams 112 alternately connected end to end, with one of the first connecting end 21 and the second connecting end 22 being detachably connected to the first support beam 111, and the other of the first connecting end 21 and the second connecting end 22 being detachably connected to the second support beam 112.

[0061] The joint 20 in the embodiment of the present application is connected to two adjacent first beams 11 at the same time, so that each joint 20 can have a first connection end 21 and a second connection end 22 respectively connected to the first beams 11 on both sides. Correspondingly, the energy bin 10 includes a plurality of first beams 11 connected in sequence, and these first beams 11 can include alternating first support beams 111 and second support beams 112, and the two support beams can extend in different directions, that is, among the plurality of first beams 11, several first beams 11 are set as first support beams 111, and the remaining first beams 11 are set as second support beams 112 whose extension direction intersects with the former, and the joint 20 can be connected between the first support beam 111 and the adjacent second support beam 112.

[0062] Specifically, one of the first connection end 21 and the second connection end 22 of the joint 20 can be detachably connected to the first support beam 111, while the other can be detachably connected to the second support beam 112. The first and second connection ends 21 and 22 connected to each other respectively support and position the first and second support beams 111 and 112, thereby improving the connection strength between the first and second support beams 111 and 112.

[0063] Furthermore, the two connecting ends of the joint 20 and the corresponding two support beams can be detachably connected. For example, fasteners can be used for connection to facilitate disassembly, assembly and adjustment while having good structural strength.

[0064] In some embodiments, the second beam 30 is arranged parallel to the first support beam 111. Alternatively, the second beam 30 can be arranged parallel to the second support beam 112. The second beam 30 can be positioned to support or bear the battery expansion force as needed, and the connection position of the second beam 30 to the connector 20 can be configured accordingly. In this case, the first connection end 21 can be connected to the second support beam 112, and the second connection end 22 can be connected to the first support beam 111. Alternatively, the same connection method as the previous embodiment can be used, and the connection position of the second beam 30 on the connector 20 can be adjusted accordingly.

[0065] In some optional embodiments, the joint 20 further includes a first reinforcing rib 23 , and at least one first reinforcing rib 23 is connected between the first connecting end 21 and the second connecting end 22 .

[0066] To further enhance the structural strength of the joint 20, at least one first reinforcing rib 23 may be formed between the first connecting end 21 and the second connecting end 22. Optionally, the first reinforcing rib 23 may extend along a plane that is parallel to the bottom plate 12. The two edges of the first reinforcing rib 23 adjacent to the first support beam 111 and the second support beam 112 may be fixedly connected to the first connecting end 21 and the second connecting end 22, respectively, to form a triangular support structure.

[0067] Optionally, multiple first reinforcing ribs 23 can be provided at the same time, and these first reinforcing ribs 23 can be connected to each other, or these first reinforcing ribs 23 can be parallel to each other and spaced apart. At the same time, the first reinforcing ribs 23 and the first connecting end 21 and the second connecting end 22 can be welded or integrally formed. This application does not make any specific limitations on this.

[0068] In some optional embodiments, the thickness of the first connecting end 21 , the second connecting end 22 and the first reinforcing rib 23 are all 3 mm to 8 mm.

[0069] The joint 20 may include two connecting ends, one for connecting to two adjacent first beams 11, and a first reinforcing rib 23 extending between the two connecting ends. The connecting areas of the first connecting end 21 and the second connecting end 22 may be configured as planar plate-like members, and the first reinforcing rib 23 may also be configured as a planar plate-like member. The thickness of these two plate-like members may range from 3 mm to 8 mm, with a preferred thickness of approximately 5 mm.

[0070] Alternatively, the joint 20 may be formed of a plurality of intersecting and extending plate-like members, each of which may have the same thickness, i.e., approximately 5 mm. Limiting the thickness of the plate-like members in the joint 20 to a certain range facilitates fabrication while ensuring that the joint 20 has acceptable strength.

[0071] In some optional embodiments, the first beam 11 includes two first support beams 111 extending along a first direction X and two second support beams 112 extending along a second direction Y, where the first direction X intersects the second direction Y; the vehicle body structure 100 includes two joints 20 symmetrically arranged in the first direction X and a second beam 30 extending along the first direction X and connected between the two joints 20, or the vehicle body structure 100 includes two joints 20 symmetrically arranged in the second direction Y and a second beam 30 extending along the second direction Y and connected between the two joints 20.

[0072] As previously described, the first beam 11 in the embodiment of the present application may include first support beams 111 and second support beams 112 alternately arranged one by one. On this basis, the first beam 11 may include two first support beams 111 extending along the first direction X and arranged opposite to each other in the second direction Y, and second support beams 112 extending along the second direction Y and arranged opposite to each other in the first direction X. The first direction X intersects with the second direction Y. Optionally, the two directions may be perpendicular to each other, so that the first beam 11 as a whole forms a rectangle.

[0073] Furthermore, the vehicle body structure 100 may be provided with two joints 20 disposed opposite each other in the first direction X. These two joints 20 may be disposed at either end of the same first support beam 111 and connected to two parallel second support beams 112. Simultaneously, the second beam 30 may be connected to the two joints 20 at either end along its own extension direction, i.e., in the first direction X. Both ends of the second beam 30 may be connected to the two joints 20, and both ends may be connected to the connection ends of the joints 20 and the second support beams 112. This allows the second beam 30 to extend parallel to the first support beam 111 with a certain spacing therebetween, thereby providing support within the accommodating cavity 13.

[0074] In some embodiments, the vehicle body structure 100 may be provided with two joints 20 arranged opposite to each other in the second direction Y, and the second beam 30 connected between the joints 20 also extends along the second direction Y. At this time, the second beam 30 is correspondingly connected to one side connection end of the joint 20 connected to the first support beam 111, and provides support in the second direction Y. Its setting method is similar to that of the aforementioned embodiment, and this application will not repeat it here.

[0075] Connecting both ends of the second beam 30 to the joint 20 can disperse the force borne by the second beam 30 and form a small closed frame structure within the frame enclosed by the first beams 11, further improving the overall reliability of the vehicle body structure 100. At the same time, the joint 20 can simultaneously strengthen the connection between adjacent first beams 11 and assist in the relative fixation between the second beam 30 and the first beam 11, which is conducive to the lightweight design of the vehicle body structure 100.

[0076] Please refer to Figures 5 and 6 . Figure 5 is an enlarged view of area P in Figure 1 , and Figure 6 is a cross-sectional view taken along line AA' in Figure 5 . In some optional embodiments, connector 20 further includes a connecting boss 24 . Connecting boss 24 extends from one of first connecting end 21 and second connecting end 22 on a side facing away from first beam 11 , protruding toward the center of accommodating cavity 13 . Connecting boss 24 is at least partially inserted into second beam 30 .

[0077] The connector 20 in the embodiment of the present application can be provided with a connecting boss 24. The connecting boss 24 is disposed on one of the first connecting end 21 or the second connecting end 22, near the accommodating cavity 13. To facilitate connection, the overall shape of the connecting boss 24 can match the cross-sectional shape of the inner cavity of the second beam 30. For example, it can be rectangular or other shapes that are convenient for processing. In embodiments where the connector 20 includes a first reinforcing rib 23, a portion of the edge of the first reinforcing rib 23 can be connected to the connecting boss 24 for further reinforcement.

[0078] When connecting the joint 20 to the second beam 30, the connecting boss 24 can be at least partially inserted into the internal cavity of the second beam 30, and the connection is achieved through the overlapping area of ​​the two after insertion. This can improve the connection strength between the joint 20 and the second beam 30, thereby improving the overall structural strength and reliability of the vehicle body structure 100.

[0079] In some optional embodiments, the connecting boss 24 has a connecting groove 241, which has an opening facing the accommodating cavity 13; the second beam 30 includes a reinforcing portion 31, the shape of the reinforcing portion 31 matches the connecting groove 241 and the reinforcing portion 31 is at least partially inserted into the connecting groove 241.

[0080] In the embodiment of the present application, the connecting boss 24 is at least partially inserted into the second beam 30. At this time, the connecting boss 24 can also be provided with a connecting groove 241. Correspondingly, the second beam 30 is provided with a reinforcing portion 31, and the reinforcing portion 31 can be at least partially inserted into the connecting groove 241.

[0081] Specifically, the connection groove 241 may have an opening proximate to the accommodating cavity 13. That is, the opening of the connection groove 241 is disposed on at least one side of the surface of the connection boss 24 proximate to the accommodating cavity 13. In the extension direction of the second beam 30, the extension dimension of the connection groove 241 may be the same as the extension dimension of the connection boss 24. In a cross section perpendicular to this direction, the cross-sectional area of ​​the connection groove 241 accounts for a certain ratio of the cross-sectional area of ​​the connection boss 24. Optionally, this ratio may be approximately 50%.

[0082] It can be understood that, in the aforementioned cross section, the cross section of the connecting groove 241 should have at least one side edge coincident with the edge of the connecting boss 24, that is, in addition to the side surface close to the center of the accommodating cavity 13, the connecting groove 241 should also have an opening on the side of the connecting boss 24 to facilitate the reinforcing portion 31 to extend therein.

[0083] Providing connecting structures with matching shapes on the second beam 30 and the joint 20 respectively and plugging the two into each other for fixing can make the connection more stable and improve the overall structural strength of the vehicle body structure 100 .

[0084] In some optional embodiments, the connecting boss 24 further includes a first connecting hole 242, the extension direction of the first connecting hole 242 intersects with the extension direction of the second beam 30, and in the extension direction of the connecting boss 24, the plurality of first connecting holes 242 are respectively located on opposite sides of the connecting groove 241; the second beam 30 has a second connecting hole 32 arranged corresponding to the first connecting hole 242, and the joint 20 further includes a fastener 26, which passes through the first connecting hole 242 and the second connecting hole 32 at the same time.

[0085] In the embodiment of the present application, the connecting boss 24 may be provided with a first connecting hole 242. The extending direction of the first connecting hole 242 intersects the extending direction of the second beam 30 and may be provided through the connecting boss 24. The first connecting hole 242 should be staggered with the connecting groove 241 to avoid a decrease in the strength of the first connecting hole 242 due to the narrow width of the connecting boss 24 at the location of the connecting groove 241. Furthermore, the first connecting holes 242 may be distributed on opposite sides of the connecting groove 241 to ensure a more stable connection.

[0086] Correspondingly, a second connecting hole 32 can be provided on the second beam 30. After the second beam 30 is inserted into the connecting boss 24, the second connecting hole 32 should correspond to the position of the first connecting hole 242, so that the fastener 26 can be used to pass through the first connecting hole 242 and the second connecting hole 32 at the same time to form a detachable connection.

[0087] Optionally, corresponding to the first connecting holes 242, the second connecting holes 32 in the second beam 30 can also be provided through the second beam 30 in the same direction, and the first and second connecting holes can extend perpendicular to the surface on which they are located. The fasteners and the corresponding connecting holes are used to securely connect the second beam 30 to the connecting boss 24 and facilitate assembly and disassembly.

[0088] In some optional embodiments, the connector 20 includes a first connecting end 21 and a second connecting end 22 connected to each other, and both the first connecting end 21 and the second connecting end 22 are provided with a third connecting hole 25; the connecting boss 24 is provided at the second connecting end 22, and the third connecting holes 25 located at the second connecting end 22 are respectively located on two opposite sides of the connecting boss 24.

[0089] As mentioned above, the joint 20 in the embodiment of the present application may include a first connecting end 21 and a second connecting end 22 for respectively connecting and fixing to the first beams 11 on both sides. Both connecting ends may be provided with a third connecting hole 25, and the joint 20 is connected to the first beam 11 through the third connecting hole 25, the connecting hole on the first beam 11 and the fastener.

[0090] On this basis, the connecting boss 24 in the connector 20 can be provided on the second connecting end 22. In this case, the third connecting holes 25 on the second connecting end 22 can be provided on opposite sides of the connecting boss 24 to further enhance the stability of the connection. Specifically, the connecting boss 24 can extend in a direction perpendicular to the direction from the first connecting end 21 to the second connecting end 22, and its extension can be equal to or slightly smaller than the extension of the connector 20 in this direction, thereby ensuring that the connecting boss 24 has good structural strength. In this case, the third connecting holes 25 can be provided on opposite sides of the connecting boss 24 perpendicular to its own extension direction, and more than two connecting holes can be provided at a time.

[0091] It can be understood that due to the arrangement of the connecting boss 24 and the third connecting hole 25, the length of the second connecting end 22 can be made greater than the length of the first connecting end 21, thereby further improving the connection strength and stability between the second connecting end 22 and the first beam 11 while providing the required space, thereby further improving the overall reliability of the vehicle body structure 100.

[0092] In some optional embodiments, the cross-section of the connecting groove 241 is rectangular, the reinforcing portion 31 includes a plurality of second reinforcing ribs 311, the extension direction of the second reinforcing ribs 311 is the same as the extension direction of the second beam 30, and the minimum spacing between at least part of the plurality of second reinforcing ribs 311 and the side wall of the connecting groove 241 is less than or equal to 5 mm.

[0093] The second beam 30 in the embodiment of the present application is connected and fixed to the joint 20 through the connecting boss 24, and the stability of the connection can be improved by providing a connecting groove 241, wherein the cross-section of the connecting groove 241 can be rectangular, and the reinforcing portion 31 can be provided in the form of a second reinforcing rib 311 matching the connecting groove 241.

[0094] Specifically, the second beam 30 can be provided with multiple second reinforcing ribs 311. These second reinforcing ribs 311 can extend in the same direction as the second beam 30 as a whole. Furthermore, these second reinforcing ribs 311 can be positioned adjacent to each sidewall of the connecting groove 241, with each second reinforcing rib 311 shaped parallel to the corresponding sidewall. After the two are plugged together and secured to each other, at least two of the second reinforcing ribs 311 can maintain a small spacing with their corresponding sidewalls to provide good torsional resistance. This spacing can, for example, be 2 mm to 3 mm. Optionally, the two sidewalls can be positioned relative to each other in a certain direction to form a more stable connection.

[0095] Setting the reinforcing portion 31 in the form of a second reinforcing rib 311 can make the second beam 30 itself have higher strength while making the second beam 30 have a lighter weight. The shape of the second reinforcing rib 311 is adapted to the connecting groove 241 and simultaneously abuts against the two oppositely arranged groove side walls, which can make the connection relationship between the second beam 30 and the joint 20 more stable and reliable.

[0096] In some optional embodiments, the second beam 30 covers the connecting boss 24 .

[0097] As previously described, the connector 20 in the embodiment of the present application includes a connecting boss 24, which is at least partially inserted into the interior of the second beam 30 to secure the connection between the two. Furthermore, the second beam 30 can completely enclose the connecting boss 24, so that the end of the second beam 30 abuts against the connecting end of the side provided with the connecting boss 24, thereby maximally securing the relative position between the second beam 30 and the connector 20. Optionally, the portion of the connecting boss 24 extending into the second beam 30 can extend by greater than or equal to 3 cm in the direction of extension of the second beam 30.

[0098] By completely enclosing the connecting boss 24, the connection strength between the second beam 30 and the joint 20 can be further improved, the possibility of the second beam 30 deforming in different directions can be reduced, and the possibility of the connecting boss 24 being damaged by external impact can be reduced, thereby further improving the reliability of the vehicle body structure 100.

[0099] In a second aspect, the present application provides a chassis, comprising: the vehicle body structure 100 in any one embodiment of the first aspect and a battery cell 40 , wherein the battery cell 40 is accommodated in an accommodating cavity 13 .

[0100] In a third aspect, the present application provides a vehicle 1000 comprising the chassis of any one of the embodiments of the second aspect.

[0101] The chassis and vehicle 1000 provided in the embodiment of the present application have all the beneficial effects of the vehicle body structure 100 in the first aspect described above. For details, please refer to the specific description of the vehicle body structure 100 in the above embodiments, which will not be repeated in this embodiment.

[0102] The present invention provides a vehicle body structure 100, which includes a first beam 11 and a bottom plate 12 that are sequentially connected to form a rectangular shape. The two together form a housing cavity 13. The housing cavity 13 includes two joints 20 and a second beam 30. The joints 20 are connected between two adjacent first beams 11, and the ends of the second beam 30 are connected to the joints 20 on both sides. These joints 20 have a first connecting end 21 and a second connecting end 22 that are connected to the two adjacent first beams 11, respectively. A first reinforcing rib 23 is connected between the first connecting end 21 and the second connecting end 22. The second connecting end 22 is provided with a connecting boss 24. The connecting boss 24 is inserted into the second beam 30 and is completely covered by the second beam 30. At the same time, the connecting boss 24 is provided with a connecting groove 241. The second beam 30 is provided with a reinforcing portion 31. The reinforcing portion 31 includes a second reinforcing rib 311, which is inserted into the connecting groove 241.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle body structure, comprising: An energy storage compartment, including a plurality of first beams and a bottom plate, the plurality of first beams being sequentially connected along the circumference of the bottom plate and enclosing a receiving cavity with the bottom plate, the receiving cavity being capable of accommodating a battery; A joint, disposed at the connection of two adjacent first beams along the circumference and connected to the two first beams; A second beam, disposed in the receiving cavity, at least one end of the second beam being connected to the joint.

2. The vehicle body structure according to claim 1, wherein, The joint includes a first connection end and a second connection end connected to each other, the extending direction of the first connection end intersecting the extending direction of the second connection end; The plurality of first beams include first support beams and second support beams connected end to end alternately, one of the first connection end and the second connection end being detachably connected to the first support beam, and the other of the second connection end and the second connection end being detachably connected to the second support beam.

3. The vehicle body structure according to claim 2, wherein, The joint further includes a first reinforcing rib, at least one first reinforcing rib being connected between the first connection end and the second connection end.

4. The vehicle body structure according to claim 3, wherein, The thickness of the first connection end, the second connection end, and the first reinforcing rib is 3 mm - 8 mm.

5. The vehicle body structure according to claim 2, wherein, The first beam includes two first support beams extending in a first direction and two second support beams extending in a second direction, the first direction intersecting the second direction; The vehicle body structure includes two joints symmetrically disposed in the first direction and the second beam extending in the first direction and connected between the two joints, or, the Vehicle body structure includes two joints symmetrically disposed in the second direction and the second beam extending in the second direction and connected between the two joints.

6. The vehicle body structure according to claim 5, wherein, The joint further includes a connecting boss, the connecting boss starting from one side of the first connection end and the second connection end facing away from the first beam and protruding towards the center of the receiving cavity, and at least a part of the connecting boss being inserted into the second beam.

7. The vehicle body structure according to claim 6, wherein, The connecting boss has a connecting groove, and the connecting groove has an opening facing the receiving cavity; The second beam includes a reinforcing portion, the shape of the reinforcing portion matching the connecting groove and at least a part of the reinforcing portion being inserted into the connecting groove.

8. The vehicle body structure according to claim 7, wherein, The connecting boss further includes a first connection hole, the extending direction of the first connection hole intersecting the extending direction of the second beam, and in the extending direction of the connecting boss, a plurality of the first connection holes are respectively located on opposite sides of the connecting groove; The second beam has a second connection hole corresponding to the first connection hole, and the joint further includes a fastener, the fastener passing through the first connection hole and the second connection hole simultaneously.

9. The vehicle body structure according to claim 8, wherein, The first connection end and the second connection end are both provided with third connection holes, the connecting boss is disposed on the second connection end, and the third connection holes on the second connection end are respectively located on opposite sides of the connecting boss.

10. The vehicle body structure according to claim 7, wherein, The cross-section of the connection groove is rectangular. The strengthening part includes a plurality of second reinforcing ribs. The extending direction of the second reinforcing ribs is the same as that of the second beam, and the minimum distance between the plurality of second reinforcing ribs and the side wall of the connection groove is less than or equal to 5 mm.

11. The vehicle body structure according to claim 7, wherein, The second beam covers the connection boss therein.

12. A chassis, comprising: The vehicle body structure according to any one of claims 1-11; A battery cell, accommodated in the accommodation cavity.

13. A vehicle, comprising the chassis according to claim 12.

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