Vehicle body structure, battery pack structure and vehicle

Abstract

The utility model provides a vehicle body structure, a battery pack structure and a vehicle. The vehicle body structure comprises threshold beams, and the threshold beams comprise the left threshold beam and the right threshold beam which are oppositely arranged; the floor cross beam is connected between the left threshold beam and the right threshold beam in the left-right direction of the vehicle; and the battery pack cross beam is located between the left threshold beam and the right threshold beam, and the battery pack cross beam and the floor cross beam form an upper force transmission path and a lower force transmission path, so that the structural strength of the vehicle body structure is improved, and the safety of the vehicle is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle structures, and specifically relates to a vehicle body structure, a battery pack structure and a vehicle. Background Art

[0002] Vehicle safety has become a focus for consumers and automakers. Among various crash tests, side pole collisions, as a common type of collision, pose severe challenges to vehicle body structure and occupant protection.

[0003] Currently, vehicle models on the market primarily rely on the high strength of the vehicle body structure to withstand the impact force, such as through floor crossbars. However, traditional floor crossbars have low force transmission efficiency when dealing with the impact force of a side pole collision, limiting their ability to resist the side pole impact load and reducing vehicle safety. Utility Model Content

[0004] One purpose of the present invention is to provide a new technical solution for a vehicle body structure, a battery pack structure and a vehicle.

[0005] According to a first aspect of the present invention, a vehicle body structure is provided, comprising:

[0006] A threshold beam, the threshold beam comprising a left threshold beam and a right threshold beam arranged opposite to each other;

[0007] a floor cross member connected between the left sill beam and the right sill beam in the left-right direction of the vehicle;

[0008] A battery pack cross beam is located between the left door sill beam and the right door sill beam.

[0009] Optionally, the battery pack cross beam is vertically opposed to at least a portion of the floor cross beam.

[0010] Optionally, the floor beam includes an underfloor beam, the underfloor beam includes a first bending section, and the battery pack beam is connected to the bottom of the first bending section and is opposite to the first bending section in upper and lower directions.

[0011] Optionally, a first groove is formed in the first bending section, and a first buffer space is formed in the first groove.

[0012] Optionally, a cavity structure is formed in the battery pack beam, and a second buffer space is formed in the cavity structure.

[0013] Optionally, a first groove is formed in the first bending section, a cavity structure is formed in the battery pack beam, and the battery pack beam and the first bending section form a first cavity structure.

[0014] Optionally, the battery pack cross beam is an aluminum profile cross beam.

[0015] Optionally, it further includes floor longitudinal beams which extend in the front-rear direction of the vehicle and are located at both ends of the floor lower cross beam.

[0016] Optionally, the floor cross beam includes a cross beam support plate which is connected to the inner side of the sill beam, and the cross beam support plate and the floor lower cross beam are oppositely arranged on both sides of the floor longitudinal beam.

[0017] Optionally, both ends of the battery pack cross beam are connected to the battery pack tray, the battery pack tray is connected to the floor longitudinal beam, and the battery pack cross beam and the cross beam support plate are opposite to each other on both sides of the floor longitudinal beam.

[0018] Optionally, the floor cross beam includes a floor upper cross beam, the floor lower cross beam includes a second bending section, a second groove is formed in the second bending section, and the floor upper cross beam is arranged on the upper side of the second bending section and forms a second cavity structure with the second bending section.

[0019] Optionally, the floor lower cross beam is W-shaped.

[0020] Optionally, in the up-down direction of the vehicle, the second cavity structure is higher than the first cavity structure.

[0021] Optionally, an installation structure is provided on the floor upper cross beam, and the installation structure is configured to connect components to be installed.

[0022] According to the second aspect of the present invention, a battery pack structure is provided, and the battery pack structure includes:

[0023] A battery pack tray;

[0024] A battery pack cross beam which is connected inside the battery pack tray and divides the inside of the battery pack tray into multiple accommodation cavities for accommodating battery modules;

[0025] [[ID=3​​​​​​​​​​​Optionally, a locking piece is further included, and a connection position is provided on the battery pack beam, and the battery pack beam is suitable for being connected to the floor beam at the connection position through the locking piece.

[0030] According to a third aspect of the present invention, a vehicle is provided, the vehicle comprising the vehicle body structure according to the first aspect; or,

[0031] Including the battery pack structure described in the second aspect.

[0032] One of the technical effects of the present invention is:

[0033] An embodiment of the present application provides a vehicle body structure, which includes a sill beam, which includes a left sill beam and a right sill beam that are relatively arranged; a floor crossbeam, which is connected between the left sill beam and the right sill beam in the left-right direction of the vehicle; and a battery pack crossbeam, which is located between the left sill beam and the right sill beam. The battery pack crossbeam and the floor crossbeam form two upper and lower force transmission paths, which improve the structural strength of the vehicle body structure and ensure the safety of the vehicle.

[0034] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0036] Figure 1 A front view schematic diagram of a vehicle body structure provided by one embodiment of the present utility model;

[0037] Figure 2 A schematic back view of a vehicle body structure provided by one embodiment of the present utility model;

[0038] Figure 3 for Figure 2 Cross-sectional view along the aa plane;

[0039] Figure 4 A schematic diagram of a combination of a floor cross member and a battery pack cross member of a vehicle body structure provided by one embodiment of the present utility model;

[0040] Figure 5 An exploded view of a floor cross member and a battery pack cross member of a vehicle body structure provided by one embodiment of the present utility model;

[0041] Figure 6 A schematic diagram of a battery pack crossbeam and a battery module of a vehicle body structure provided by one embodiment of the present utility model;

[0042] Figure 7 A schematic diagram of the back of a vehicle body structure provided by one embodiment of the present invention (excluding the battery module);

[0043] Figure 8 A schematic diagram of a force transmission channel of a vehicle body structure provided by one embodiment of the present utility model;

[0044] Figure 9 A schematic diagram of another force transmission channel of a vehicle body structure provided by an embodiment of the present invention.

[0045] Among them: 1. Sill beam; 11. Sill reinforcement beam; 12. Sill beam inner plate; 2. Floor beam; 21. Underfloor beam; 211. First bend section; 212. Second bend section; 22. Floor beam; 23. Beam support plate; 3. Battery pack beam; 4. Floor longitudinal beam; 5. Mounting structure; 6. Battery module; 7. Bolts; 8. Battery pack tray.

[0046] 100. First cavity structure; 200. Second cavity structure. DETAILED DESCRIPTION

[0047] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0048] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0049] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 should not be understood as a limitation on the present application.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0052] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0053] Reference Figures 1 to 3 , an embodiment of the present application provides a vehicle body structure, the vehicle body structure comprising:

[0054] The threshold beam 1 includes a left threshold beam and a right threshold beam that are arranged opposite to each other;

[0055] A floor cross member 2 connected between a left sill beam and a right sill beam in the left-right direction of the vehicle;

[0056] The battery pack cross beam 3 is located between the left door sill beam and the right door sill beam.

[0057] In the vehicle with this body structure, the vehicle has length, width and height. The length of the vehicle is the length of the vehicle, that is, the length of the vehicle in the front and rear directions. Figure 1 The width dimension of the vehicle is the dimension of the vehicle in the width direction, that is, the dimension of the vehicle in the left and right directions. The width dimension of the vehicle can be Figure 1 The height dimension of the vehicle is the dimension of the vehicle in the height direction, that is, the dimension of the vehicle in the up and down directions. The height dimension of the vehicle can be Figure 1 The Z direction in .

[0058] In this embodiment, the left and right sill beams are spaced apart in the left-right direction of the vehicle to serve as protective structures on both sides of the vehicle body structure, respectively, to initially resist impacts on both sides of the vehicle body structure (in an actual vehicle body structure, an outer peripheral plate can be provided on the outer side of the sill beam to serve the purpose of appearance display and initial protection).

[0059] There's space between the left and right sill beams for accommodating the battery module. A floor cross member 2 connects between the left and right sill beams in the vehicle's left-right direction, forming a force transmission structure from the left sill beam, floor cross member 2, to the right sill beam in that direction. This prevents the left and right sill beams from collapsing inwards and damaging the battery module.

[0060] See also Figure 3 The battery pack cross beam 3 is located in the accommodation space between the left door sill beam and the right door sill beam, and the battery pack cross beam 3 and the floor cross beam 2 can be spaced apart up and down to form two independent force transmission paths; or the battery pack cross beam 3 and the floor cross beam 2 are connected up and down to enhance the integrity of the two force transmission paths.

[0061] When the battery pack cross beam 3 and the floor cross beam 2 are both arranged along the left and right directions of the vehicle, a combined cross beam is formed by the battery pack cross beam 3 and the floor cross beam 2. The battery pack cross beam 3 and the floor cross beam 2 respectively form two upper and lower force transmission paths in the left and right directions of the vehicle, thereby improving the structural strength of the vehicle body structure in the left and right directions of the vehicle, so as to disperse the load force of the side collision when the vehicle collides sideways, improve the efficiency of load force transmission in the vehicle body structure and the ability of the vehicle body structure to resist side collision loads, and ensure the safety of the vehicle.

[0062] In one embodiment, in the front and rear directions of the vehicle, battery modules 6 are provided on both the front and rear sides of the battery pack cross beam 3 to ensure the capacity of the battery module 6 while protecting the battery modules 6 on both sides through the battery pack cross beam 3.

[0063] In this embodiment, see Figure 6 The battery module 6 includes a battery shell, and the battery pack cross beam 3 is arranged outside the battery shell, so as to prevent the battery pack cross beam 3 from squeezing the battery cells in the battery module 6 after being deformed by force.

[0064] The vehicle body structure provided in the embodiment of the present application includes a door sill beam 1, which includes a left door sill beam and a right door sill beam that are relatively arranged; a floor crossbeam 2, which is connected between the left door sill beam and the right door sill beam in the left-right direction of the vehicle; a battery pack crossbeam 3, which is located between the left door sill beam and the right door sill beam. The battery pack crossbeam 3 and the floor crossbeam 2 form two upper and lower force transmission paths in the left-right direction of the vehicle, respectively, thereby improving the structural strength of the vehicle body structure in the left-right direction of the vehicle and ensuring the safety of the vehicle.

[0065] In one embodiment, see Figure 3 and Figure 4 The battery pack cross beam 3 and at least a portion of the floor cross beam 2 are vertically opposed to each other.

[0066] In this embodiment, the battery pack cross beam 3 is vertically opposed to at least a portion of the floor cross beam 2. For example, the battery pack cross beam 3 is located below the floor cross beam 2 and partially opposes the battery pack cross beam 2. The battery pack cross beam 3 and the floor cross beam 2 can be vertically spaced apart to form two independent force transmission paths, or they can be vertically connected to the floor cross beam 2 to enhance the integrity of the two force transmission paths.

[0067] In one embodiment, see Figure 3 The floor beam 2 includes an under-floor beam 21 , the under-floor beam 21 includes a first bending section 211 , and the battery pack beam 3 is connected to the bottom of the first bending section 211 and is opposite to the first bending section 211 in upper and lower directions.

[0068] In this embodiment, the battery pack beam 3 can be connected to the bottom of the first bending section 211 by bolts 7 or connecting parts such as adhesives. When the battery pack beam 3 and the first bending section 211 are connected by bolts, the bolts can be locked to the bottom of the first bending section 211 after passing through the battery pack beam 3 in the up and down directions of the vehicle, thereby improving the connection strength and stability between the battery pack beam 3 and the first bending section 211.

[0069] At the same time, the battery pack beam 3 is opposite to the first bending section 211 in the upper and lower parts. For example, the battery pack beam 3 is arranged directly below the first bending section 211. The battery pack beam 3 is connected to the under-floor beam 21 as a whole to jointly cope with the load of the side column collision and improve the impact resistance of the vehicle body structure.

[0070] In one embodiment, see Figure 3 A first groove is formed in the first bending section 211, and a first buffer space is formed in the first groove.

[0071] In this embodiment, the buffer space has a high energy absorption effect, which can prevent instability during collision. The first bent section 211 is used to ensure structural support, and the groove structure within the first bent section 211 provides deformation space, which can improve the lateral impact resistance of the floor beam 2.

[0072] In one embodiment, see Figure 3 A cavity structure is formed in the battery pack cross beam 3, and a second buffer space is formed in the cavity structure.

[0073] In this embodiment, the cavity structure can achieve a high collision force transmission efficiency during a collision. At the same time, the stability and energy absorption effect of the cavity structure are high, which can avoid the problem of instability during the collision process.

[0074] In one embodiment, referring to Figure 3 , a first groove is formed in the first bending section 211, a cavity structure is formed in the battery pack cross beam 3, and the battery pack cross beam 3 and the first bending section 211 form a first cavity structure 100.

[0075] In this embodiment, the first cavity structure 100 combines the cavity structure in the battery pack cross beam 3 and the groove structure in the first bending section 211. The battery pack cross beam 3 and the first bending section 211 are used to ensure structural support, and the cavity structure in the battery pack cross beam 3 and the groove structure in the first bending section 211 are used to provide a deformation space, improving the buffering ability of the first cavity structure 100 against lateral impact forces.

[0076] In one embodiment, referring to Figure 3 , the battery pack cross beam 3 is an aluminum profile cross beam.

[0077] In this embodiment, the battery pack cross beam 3 may include an aluminum profile frame and a cavity formed in the aluminum profile frame to improve the energy absorption effect and buffering ability of the battery pack cross beam 3.

[0078] The floor cross beam can be a steel cross beam. The steel material has good strength and rigidity characteristics, which can meet the installation form of parts such as vehicle seats. The body structure provided by the embodiment of the present application adopts a structure combination of upper steel and lower aluminum, improving the impact resistance of the combined cross beam in the body structure.

[0079] In one embodiment, the cross section of the battery pack cross beam 3 in the left-right direction of the vehicle is in a shape like a Chinese character 'Mu', that is, the battery pack cross beam 3 is a three-hole aluminum profile structure, and the cross-sectional width of the battery pack cross beam 3 in the front-rear direction of the vehicle is equal to the cross-sectional width of the first bending section 211 in the front-rear direction of the vehicle, so as to increase the number of cavities in the first cavity structure 100 through the groove in the first bending section 211 and improve the deformation resistance ability of the first cavity structure 100.

[0080] In one embodiment, referring to Figures 7 to 9 , the body structure further includes a floor longitudinal beam 4, and the floor longitudinal beam 4 extends in the front-rear direction of the vehicle and is located at both ends of the floor lower cross beam 21.

[0081] In this embodiment, the floor longitudinal beam 4 is extended in the front-to-rear direction of the vehicle, which can strengthen the vehicle structure in the front-to-rear direction of the vehicle and improve the impact resistance of the vehicle in the front-to-rear direction; and the two floor longitudinal beams 4 are respectively located at the two ends of the under-floor cross beam 21, which can provide end protection for the under-floor cross beam 21. The floor longitudinal beams 4 and the under-floor cross beam 21 form a protective structure connected vertically and horizontally to ensure the structural stability of the vehicle.

[0082] In one embodiment, see Figure 7 and Figure 9 The floor cross member 2 includes a cross member support plate 23 , which is connected to the inner side of the door sill beam 1 , and the cross member support plate 23 is arranged on both sides of the floor longitudinal beam 4 opposite to the under-floor cross member 21 .

[0083] In this embodiment, see Figure 9 , the side impact force along Figure 9 The direction indicated by the middle arrow is transmitted to the sill beam 1, and the upper cross beam 22 on the floor is directly overlapped with the sill beam 1. The sill beam 1 transmits the collision force to the second cavity structure 200 formed by the upper cross beam 22 on the floor and the lower cross beam 21 through the cross beam support plate 23 and the floor longitudinal beam 4, thereby improving the structural strength of the body structure in the left and right directions of the vehicle and ensuring the safety of the vehicle.

[0084] In one embodiment, see Figure 7 and Figure 8 Both ends of the battery pack cross beam 3 are connected to the battery pack tray, the battery pack tray is connected to the floor longitudinal beam 4, and the battery pack cross beam 3 and the cross beam support plate 23 are opposite to each other on both sides of the floor longitudinal beam 4.

[0085] In this embodiment, see Figure 8 In the force transmission channel formed by the first cavity structure 100, the side collision force is transmitted along Figure 8 The force is transmitted to the sill beam 1 in the direction indicated by the middle arrow. The sill beam 1 is reinforced by designing an aluminum profile structure to enhance the strength and rigidity of the sill beam 1. Since the crossbeam support plate 23 is arranged between the sill beam 1 and the floor longitudinal beam 4, the sill beam 1 transmits the collision force from the crossbeam support plate 23 to the floor longitudinal beam 4, and then the floor longitudinal beam 4 transmits the collision force to the battery pack crossbeam 3 opposite to the lower end, and the battery pack crossbeam 3 forms at least part of the first cavity structure 100. The force transmission channel formed by the second cavity structure 200 is located on the upper side of the force transmission channel formed by the first cavity structure 100, so as to form two upper and lower force transmission paths in the left and right directions of the vehicle, respectively, thereby improving the efficiency of load force transmission in the body structure and the ability of the body structure to resist side collision loads.

[0086] In one embodiment, see Figure 1 and Figure 2The threshold beam 1 includes a threshold reinforcement beam 11 and a threshold beam inner plate 12. The threshold reinforcement beam 11 can be an aluminum reinforcement beam to improve the impact resistance and buffering effect of the threshold beam 1.

[0087] In one embodiment, see Figure 3 The floor beam 2 includes a floor beam 22, the floor beam 21 includes a second bending section 212, a second groove is formed in the second bending section 212, and the floor beam 22 is arranged on the upper side of the second bending section 212 and forms a second cavity structure 200 with the second bending section 212.

[0088] In this embodiment, the second groove in the second bending section 212 can have an upward opening, and the crossbeam 22 on the floor is arranged on the opening of the second groove to form a closed second cavity structure 200 between the crossbeam 22 on the floor and the second bending section 212. The crossbeam 22 on the floor and the second bending section 212 are used to ensure structural support, and the hollow second cavity structure 200 is used to provide deformation space to improve the buffering ability of the second cavity structure 200 against lateral impact force.

[0089] In one embodiment, see Figure 4 and Figure 5 , the underfloor beam 21 is W-shaped.

[0090] In this embodiment, the first groove and the second groove in the underfloor cross beam 21 can both have upward openings to form a dual-cavity cavity structure in the underfloor cross beam 21. The opening of the first groove can be covered by the floor panel, and the cavity in the first groove cooperates with the battery pack cross beam 3, and the cavity in the second groove cooperates with the upper cross beam 22 on the floor to improve the strength and stability of the vehicle body structure in side column collision conditions and enhance the force transmission efficiency of the vehicle body structure in side collisions.

[0091] In one embodiment, see Figure 3 In the up-down direction of the vehicle, the second cavity structure 200 is higher than the first cavity structure 100 .

[0092] In this embodiment, see Figure 3 The first cavity structure 100 is arranged close to the bottom of the battery module, and the bottom of the second cavity structure 200 is located on the upper side of the battery module, so that the bottom of the second cavity structure 200 is higher than the bottom of the first cavity structure 100, and the top of the second cavity structure 200 is higher than the top of the first cavity structure 100, to form two cavity structures arranged up and down.

[0093] The second cavity structure 200 and the first cavity structure 100 form two upper and lower force transmission channels to disperse the load caused by the collision of the side columns of the vehicle body structure. While improving the force transmission strength of the vehicle body structure, it ensures the balance of the lateral force transmission of the vehicle body structure and prevents the vehicle body structure from becoming unstable during a collision.

[0094] In one embodiment, see Figure 1 A mounting structure 5 is provided on the crossbeam 22 on the floor, and the mounting structure 5 is configured to connect the components to be installed.

[0095] In this embodiment, the mounting structure is disposed close to the second cavity structure 200 , so that the component to be installed can be connected to the mounting structure 5 , thereby meeting the installation requirements of the component to be installed.

[0096] In one embodiment, the mounting structure 5 is a seat reinforcement plate, which is connected to the crossbeam 22 on the floor by welding, so as to integrate high-strength mounting structures such as the seat mounting structure into the cavity structure, reduce the number of parts and optimize process costs.

[0097] See also Figure 6 , an embodiment of the present application provides a battery pack structure, the battery pack structure comprising:

[0098] Battery pack tray 8;

[0099] The battery pack crossbeam 3 is connected to the battery pack tray 8 and separates the battery pack tray 8 into a plurality of accommodating cavities for accommodating the battery modules 6;

[0100] The battery pack cross beam 3 is suitable for being located between the left sill beam and the right sill beam.

[0101] In this embodiment, battery modules 6 are provided on both the front and rear sides of the battery pack cross beam 3 in the front-rear direction of the vehicle, so as to ensure the capacity of the battery modules 6 and improve the overall strength of the battery pack structure on the basis of forming protection for the battery modules 6 on both sides through the battery pack cross beam 3; and the battery pack cross beam 3 is located between the left sill beam and the right sill beam, which can form a force transmission path from the left sill beam, the battery pack cross beam 3 to the right sill beam, so as to disperse the load force of the side collision when the vehicle collides sideways, thereby improving the efficiency of load force transmission in the vehicle body structure and the ability of the vehicle body structure to resist the side collision load.

[0102] In one embodiment, see Figure 3 , a cavity structure is formed in the battery pack beam 3.

[0103] In this embodiment, the cavity structure can achieve a higher collision force transmission efficiency during a collision. At the same time, the cavity structure has high stability and energy absorption effect, which can avoid instability problems during a collision and ensure the stability of the battery pack structure.

[0104] In one embodiment, referring to Figure 3 , the cross-section of the battery pack crossbeam 3 in the left-right direction of the vehicle is in the shape of a Chinese character 'Mu'.

[0105] In this embodiment, the battery pack crossbeam 3 can be a three-hole aluminum profile structure, and the cross-sectional width of the battery pack crossbeam 3 in the front-rear direction of the vehicle is equal to the cross-sectional width of the first bending section 211 in the front-rear direction of the vehicle, so as to improve the deformation resistance ability of the battery pack crossbeam 3 and the floor crossbeam through the cooperation of the battery pack crossbeam 3 and the floor crossbeam.

[0106] In one embodiment, referring to Figure 3 , the battery pack structure further includes a locking member. A connection position is provided on the battery pack crossbeam 3, and the battery pack crossbeam 3 is adapted to be connected to the floor crossbeam at the connection position through the locking member.

[0107] In this embodiment, the locking member can be a bolt 7 or a pin. The battery pack crossbeam 3 can be connected to the bottom of the floor crossbeam through the bolt 7. For example, the battery pack crossbeam 3 is connected to the underfloor crossbeam through the bolt 7. When the battery pack crossbeam 3 and the underfloor crossbeam are connected by bolts, the bolts can penetrate the battery pack crossbeam 3 in the up-down direction of the vehicle and then be locked to the bottom of the underfloor crossbeam, improving the connection strength and stability between the battery pack crossbeam 3 and the floor crossbeam.

[0108] In one embodiment, the battery pack crossbeam 3 is an aluminum profile crossbeam.

[0109] In this embodiment, the battery pack crossbeam 3 can include an aluminum profile frame and a cavity formed in the aluminum profile frame, so as to improve the energy absorption effect and buffering ability of the battery pack crossbeam 3 and ensure the structural strength of the battery pack structure.

[0110] The embodiment of the present application provides a vehicle, which includes the above-mentioned body structure; or,

[0111] includes the above-mentioned battery pack structure.

[0112] In this embodiment, the body structure of the vehicle includes a sill beam 1, and the sill beam 1 includes a left sill beam and a right sill beam arranged oppositely; a floor crossbeam 2, and the floor crossbeam 2 is connected between the left sill beam and the right sill beam in the left-right direction of the vehicle; a battery pack crossbeam 3, and the battery pack crossbeam 3 is located between the left sill beam and the right sill beam and is at least partially vertically opposite to the floor crossbeam 2. The battery pack crossbeam 3 and the floor crossbeam 2 respectively form upper and lower two force transmission paths in the left-right direction of the vehicle, improving the structural strength of the body structure in the left-right direction of the vehicle and ensuring the safety of the vehicle.

[0113] Or in the battery pack structure of the vehicle, battery modules 6 are provided on both the front and rear sides of the battery pack cross beam 3, so as to ensure the capacity of the battery module 6 on both sides on the basis of protecting the battery modules 6 through the battery pack cross beam 3, improve the overall strength of the battery pack structure, and ensure the endurance and safety of the vehicle.

[0114] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A vehicle body structure, characterized in that: include: A threshold beam (1), the threshold beam (1) comprising a left threshold beam and a right threshold beam arranged opposite to each other; A floor crossbeam (2), the floor crossbeam (2) being connected between the left sill beam and the right sill beam in the left-right direction of the vehicle; a battery pack crossbeam (3), the battery pack crossbeam (3) being located between the left door sill beam and the right door sill beam; The battery pack cross beam (3) and at least a portion of the floor cross beam (2) are vertically opposed to each other.

2. The vehicle body structure according to claim 1, wherein: The floor crossbeam (2) includes an underfloor crossbeam (21), the underfloor crossbeam (21) includes a first bent section (211), and the battery pack crossbeam (3) is connected to the bottom of the first bent section (211) and is vertically opposite to the first bent section (211).

3. The vehicle body structure according to claim 2, characterized in that: A first groove is formed in the first bending section (211), and a first buffer space is formed in the first groove.

4. The vehicle body structure according to claim 1, wherein: A cavity structure is formed in the battery pack crossbeam (3), and a second buffer space is formed in the cavity structure.

5. The vehicle body structure according to claim 2, wherein: A first groove is formed in the first bending section (211), a cavity structure is formed in the battery pack crossbeam (3), and the battery pack crossbeam (3) and the first bending section (211) form a first cavity structure (100).

6. The vehicle body structure according to claim 1, wherein: The battery pack crossbeam (3) is an aluminum profile crossbeam.

7. The vehicle body structure according to claim 2, wherein: The vehicle also includes floor longitudinal beams (4), which are extended in the front-rear direction of the vehicle and are located at both ends of the under-floor cross beam (21).

8. The vehicle body structure according to claim 7, wherein: The floor cross beam (2) includes a cross beam support plate (23), the cross beam support plate (23) is connected to the inner side of the door sill beam (1), and the cross beam support plate (23) is arranged on both sides of the floor longitudinal beam (4) opposite to the under-floor cross beam (21).

9. The vehicle body structure according to claim 8, characterized in that: Both ends of the battery pack cross beam (3) are connected to a battery pack tray, the battery pack tray is connected to the floor longitudinal beam (4), and the battery pack cross beam (3) and the cross beam support plate (23) are opposite to each other on both sides of the floor longitudinal beam (4).

10. The vehicle body structure according to claim 5, wherein: The floor crossbeam (2) includes an upper floor crossbeam (22), the lower floor crossbeam (21) includes a second bending section (212), a second groove is formed in the second bending section (212), and the upper floor crossbeam (22) is arranged on the upper side of the second bending section (212) and forms a second cavity structure (200) between the upper floor crossbeam (22) and the second bending section (212).

11. The vehicle body structure according to claim 2, wherein: The under-floor cross beam (21) is W-shaped.

12. The vehicle body structure according to claim 10, wherein: In the up-down direction of the vehicle, the second cavity structure (200) is higher than the first cavity structure (100).

13. The vehicle body structure according to claim 10, wherein: A mounting structure (5) is provided on the crossbeam (22) on the floor, and the mounting structure (5) is configured to connect components to be installed.

14. A battery pack structure, characterized in that: include: Battery pack tray (8); A battery pack crossbeam (3), the battery pack crossbeam (3) being connected to the battery pack tray (8) and separating the battery pack tray (8) into a plurality of accommodating cavities, the accommodating cavities being used to accommodate battery modules (6); The battery pack cross beam (3) is suitable for being located between the left door sill beam and the right door sill beam.

15. The battery pack structure according to claim 14, characterized in that: A cavity structure is formed in the battery pack crossbeam (3).

16. The battery pack structure according to claim 14, characterized in that: The cross-section of the battery pack crossbeam (3) in the left-right direction of the vehicle is in the shape of a Chinese character 'Mu'.

17. The battery pack structure according to claim 14, characterized in that: It further includes a locking member. A connecting position is provided on the battery pack crossbeam (3), and the battery pack crossbeam (3) is adapted to be connected to the floor crossbeam at the connecting position through the locking member.

18. The battery pack structure according to claim 14, characterized in that: The battery pack crossbeam (3) is an aluminum profile crossbeam.

19. A vehicle, characterized in that: It includes the vehicle body structure according to any one of claims 1-13; or, It includes the battery pack structure according to any one of claims 14-18.

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