CN220662650U - Rear floor frame of vehicle and vehicle - Google Patents

Abstract

The utility model discloses a rear floor frame of a vehicle and the vehicle, wherein the rear floor frame comprises: the longitudinal beam structure comprises a first longitudinal beam and a second longitudinal beam, and the first longitudinal beam and/or the second longitudinal beam are/is provided with extension beams; the beam structure is connected between the first longitudinal beam and the second longitudinal beam and is connected with the corresponding extension beam; in a first direction of the rear floor frame, the front projection of the beam structure has an overlapping area with the front projection of the battery pack. Therefore, the first longitudinal beam and/or the second longitudinal beam are/is provided with the extending beams extending towards each other, and the cross beam structure is connected with the corresponding extending beams, so that the structural strength and durability of the rear floor frame can be improved, the structural strength requirement of a vehicle body can be met, the safety of the vehicle can be improved, and the front projection of the cross beam structure and the front projection of the battery pack are/is provided with the overlapping area along the first direction, the cross beam structure can provide protection for the battery pack in the first direction, and the safety of the vehicle can be improved.

Description

Rear floor frame of vehicle and vehicle

Technical Field

The present utility model relates to the field of vehicles, and more particularly, to a rear floor frame of a vehicle and a vehicle having the same.

Background

In the related art, the rear floor of the vehicle belongs to a part of the vehicle body, and the longitudinal beam and the transverse beam of the rear floor framework of the existing vehicle are directly overlapped, so that the structural strength and the durability of the rear floor framework of the structural form are poor, the structural strength requirement of the vehicle body cannot be met, the safety of the vehicle is reduced, the relative position design of the rear floor framework of the existing vehicle and the vehicle battery pack is unreasonable, and the rear floor framework cannot provide protection for the battery pack in the Z direction (namely the height direction of the vehicle), so that the safety of the vehicle is influenced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a rear floor frame of a vehicle which contributes to an improvement in safety of the vehicle.

The utility model further proposes a vehicle.

The rear floor frame of a vehicle according to the present utility model includes: a stringer structure comprising first and second stringers spaced apart and oppositely disposed, the first and/or second stringers having extension beams extending toward each other; the beam structure is connected between the first longitudinal beam and the second longitudinal beam and is connected with the corresponding extension beam; the longitudinal beam structure is adapted to be connected with a battery pack of the vehicle, and the front projection of the cross beam structure and the front projection of the battery pack have overlapping areas along a first direction of the rear floor frame.

According to the rear floor frame of the vehicle, the first longitudinal beam and/or the second longitudinal beam are/is provided with the extending beams extending towards each other, and the cross beam structure is connected with the corresponding extending beams, so that the structural strength and durability of the rear floor frame can be improved, the structural strength requirement of a vehicle body can be met, the safety of the vehicle can be improved, and the front projection of the cross beam structure and the front projection of the battery pack are/is provided with the overlapping area along the first direction, and the cross beam structure can provide protection for the battery pack in the first direction, so that the safety of the vehicle can be improved advantageously.

In some examples of the utility model, the beam structure comprises: and the distance between the first sub-beam and the front end of the longitudinal beam structure is smaller than that between the first sub-beam and the rear end of the longitudinal beam structure along the second direction of the rear floor frame, and the orthographic projection of the first sub-beam and the orthographic projection of the battery pack along the first direction have an overlapping area, wherein the second direction is perpendicular to the first direction.

In some examples of the present utility model, the width of the overlapping region is M1, and the width of the first sub-beam is M2, along the second direction, satisfying the relationship 0.25M2 +.m1+. 0.45M2.

In some examples of the present utility model, the length of the battery pack in the second direction is M3, satisfying the relationship: 0.045M3M 2 is less than or equal to 0.115M3.

In some examples of the present utility model, the first longitudinal beam and the second longitudinal beam each have a plurality of extension beams extending toward each other, and the plurality of extension beams of the first longitudinal beam and the plurality of extension beams of the second longitudinal beam are in one-to-one correspondence to form a plurality of extension beam groups, and the cross beam structure is connected between two extension beams of each of the extension beam groups.

In some examples of the utility model, the beam structure further comprises: and the distance between the second sub-cross beam and the front end of the longitudinal beam structure is greater than that between the second sub-cross beam and the rear end of the longitudinal beam structure along the second direction.

In some examples of the utility model, the first sub-beam has a length M5 and the battery pack has a width M6 along the third direction of the rear floor frame, satisfying the relationship: 0.25M6M 5 is less than or equal to 0.5M6, wherein the third direction is perpendicular to the first direction and the second direction.

In some examples of the present utility model, along the third direction, the second sub-beam has a length M7, and satisfies the relationship: 0.25M6M 7 is less than or equal to 0.5M6.

In some examples of the utility model, the rear floor frame of the vehicle further comprises: the third cross beam is connected between the first longitudinal beam and the second longitudinal beam and is positioned between the first sub-cross beam and the second sub-cross beam;

along the second direction, the distance between the third beam and the first sub-beam is M8, and the distance between the third beam and the second sub-beam is M9, so that the relation is satisfied: 0.854M9M 8 is less than or equal to 1.154M9.

In some examples of the present utility model, the second sub-beam is spaced from the battery pack by a distance M10 along the second direction, satisfying the relationship: m10 is 600mm or more and 750mm or less.

In some examples of the present utility model, the third beam is spaced from the battery pack by a distance M11 along the second direction, satisfying the relationship: m11 is more than or equal to 250mm and less than or equal to 350mm.

In some examples of the present utility model, the second sub-beam is spaced apart from the battery pack by a distance M10 and the third sub-beam is spaced apart from the battery pack by a distance M11 along the second direction, satisfying the relationship: M11/M10 is more than or equal to 0.4 and less than or equal to 0.5.

The vehicle according to the utility model comprises the rear floor frame of the vehicle.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is an assembly schematic view of a rear floor frame and a battery pack according to an embodiment of the present utility model (a partial structure of the rear floor frame is omitted);

FIG. 2 is a schematic view of a rear floor frame according to an embodiment of the utility model;

fig. 3 is a schematic view of a rear floor frame according to an embodiment of the present utility model.

Reference numerals:

a rear floor frame 3;

a stringer structure 31; a first stringer 311; a second stringer 312; an extension beam 313; an extension beam set 314; a first set of extension beams 3141; a second set of extension beams 3142;

a beam structure 32; a first sub-beam 321; a second sub-beam 322;

a third cross member 33; an energy absorber 34;

and a battery pack 5.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A rear floor frame 3 of a vehicle according to an embodiment of the present utility model is described below with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a rear floor frame 3 of a vehicle according to an embodiment of the present utility model includes: a stringer structure 31 and a cross beam structure 32.

The stringer structure 31 may include a first stringer 311 and a second stringer 312, where the first stringer 311 and the second stringer 312 are disposed opposite and spaced apart along a width direction of the vehicle (i.e., a Y direction shown in fig. 1). The first side member 311 and the second side member 312 may each be provided to extend in the longitudinal direction of the vehicle (i.e., the X direction shown in fig. 1).

The first longitudinal beam 311 and/or the second longitudinal beam 312 have extension beams 313 extending towards each other. As some alternative embodiments of the present application, the first longitudinal beam 311 may have an extension beam 313, and the extension beam 313 may extend toward the second longitudinal beam 312, specifically, the extension beam 313 of the first longitudinal beam 311 may extend toward the second longitudinal beam 312 in the width direction of the vehicle (i.e., the Y direction shown in fig. 1). As some alternative embodiments of the present application, the second longitudinal beam 312 may have an extension beam 313, and the extension beam 313 may extend toward the first longitudinal beam 311, specifically, the extension beam 313 of the second longitudinal beam 312 may extend toward the first longitudinal beam 311 in the width direction of the vehicle (i.e., the Y direction shown in fig. 1). As some optional embodiments of the present application, each of the first side member 311 and the second side member 312 may have an extension beam 313, the extension beam 313 of the first side member 311 may extend toward the second side member 312 in the width direction of the vehicle, and the extension beam 313 of the second side member 312 may extend toward the first side member 311 in the width direction of the vehicle, it being understood that when each of the first side member 311 and the second side member 312 has an extension beam 313, the extension beam 313 of the first side member 311 and the extension beam 313 of the second side member 312 are correspondingly disposed in the width direction of the vehicle.

The cross beam structure 32 is connected between the first longitudinal beam 311 and the second longitudinal beam 312, and the cross beam structure 32 is connected with a corresponding extension beam 313. In embodiments where the first longitudinal beam 311 has an extension beam 313, one end of the cross beam structure 32 may be connected to the extension beam 313 of the first longitudinal beam 311 and the other end of the cross beam structure 32 may be connected to the second longitudinal beam 312. In embodiments where the second longitudinal beam 312 has an extension beam 313, one end of the cross beam structure 32 may be connected to the extension beam 313 of the second longitudinal beam 312 and the other end of the cross beam structure 32 may be connected to the first longitudinal beam 311. In embodiments where both the first side rail 311 and the second side rail 312 have extension beams 313, one end of the cross beam structure 32 may be connected to the extension beams 313 of the first side rail 311 and the other end of the cross beam structure 32 may be connected to the extension beams 313 of the second side rail 312.

By constructing the first side member 311 and/or the second side member 312 to have the structural form of the extension beam 313 and connecting the cross beam structure 32 with the corresponding extension beam 313, the structural strength of the rear floor frame 3 can be improved, and the durability of the rear floor frame 3 can also be improved, so that the rear floor frame 3 can meet the structural strength requirement of the vehicle body, and the rear floor frame 3 of such structural form has low noise, low vibration frequency and small vibration amplitude when in use, which is advantageous for improving the NVH performance of the vehicle.

The longitudinal beam structure 31 is adapted to be connected to the battery pack 5 of the vehicle, and the front projection of the cross beam structure 32 and the front projection of the battery pack 5 have overlapping areas in the first direction of the rear floor frame 3, i.e. the height direction of the vehicle. In other words, a plane is set which is perpendicular to the height direction of the vehicle, that is, the normal to the plane is parallel to the height direction of the vehicle, and the front projection of the beam structure 32 on the plane and the front projection of the battery pack 5 on the plane have overlapping areas. When the vehicle receives the extrusion force in the Z direction, the cross beam structure 32 can bear the extrusion force and transmit the extrusion force to the longitudinal beam structure 31, so that the battery pack 5 can be prevented from receiving the extrusion force in the Z direction or the Z-direction extrusion force received by the battery pack 5 can be reduced, and the safety of the vehicle can be improved.

Thus, by providing the first side member 311 and/or the second side member 312 with the extension beams 313 extending toward each other and connecting the cross beam structure 32 with the corresponding extension beams 313, the structural strength and durability of the rear floor frame 3 can be improved, so that the rear floor frame 3 can meet the structural strength requirement of the vehicle body, the safety of the vehicle can be improved, and since the orthographic projection of the cross beam structure 32 and the orthographic projection of the battery pack 5 have overlapping areas in the first direction, the cross beam structure 32 can provide protection for the battery pack 5 in the first direction, which is advantageous for improving the safety of the vehicle.

As some alternative embodiments of the present application, as shown in fig. 2 and 3, each of the first longitudinal beam 311 and the second longitudinal beam 312 may have an extension beam 313, and the extension beams 313 of the first longitudinal beam 311 and the extension beams 313 of the second longitudinal beam 312 may be disposed opposite and spaced apart. Specifically, the extension beam 313 of the first longitudinal beam 311 may extend toward the second longitudinal beam 312 in the first direction, the extension beam 313 of the second longitudinal beam 312 may extend toward the first longitudinal beam 311 in the first direction, and the extension beams 313 of the first and second longitudinal beams 311, 312 may be opposite and spaced apart in the first direction.

Both ends of the cross beam structure 32 are connected to the corresponding extension beams 313, respectively, that is, one end of the cross beam structure 32 may be connected to the extension beam 313 of the first longitudinal beam 311 and the other end of the cross beam structure 32 may be connected to the extension beam 313 of the second longitudinal beam 312. The structural strength of the rear floor frame 3 can be improved, and the durability of the rear floor frame 3 can be improved, so that the rear floor frame 3 can meet the structural strength requirement of a vehicle body, and noise and vibration of the rear floor frame 3 during use can be reduced.

In some embodiments of the present utility model, as shown in fig. 1-3, the beam structure 32 may include: the first sub-cross member 321 may have a distance from the front end of the side member structure 31 smaller than a distance from the first sub-cross member 321 to the rear end of the side member structure 31 in the second direction of the rear floor frame 3 (i.e., the longitudinal direction of the vehicle, i.e., the X direction shown in fig. 1).

As some alternative embodiments of the present application, the first sub-cross member 321 may be provided to extend in the width direction of the vehicle, and both ends of the first sub-cross member 321 may be connected to the extension beam 313. In the second direction (i.e., the longitudinal direction of the vehicle, i.e., the X direction shown in fig. 1), the distance between the first sub-cross member 321 and the front end of the side member structure 31 may be smaller than the distance between the first sub-cross member 321 and the rear end of the side member structure 31, in other words, the first sub-cross member 321 may be located at a position forward of the middle of the side member structure 31. The arrangement can make the arrangement position of the first sub-beam 321 reasonable, and can improve the structural strength of the front section in the rear floor frame 3.

The front projection of the first sub-cross member 321 and the front projection of the battery pack 5 may have overlapping areas in a first direction (i.e., the height direction of the vehicle), wherein the second direction is perpendicular to the first direction. When the vehicle receives the extrusion force in the Z direction, the first sub-cross beam 321 can bear the extrusion force and transmit the extrusion force to the longitudinal beam structure 31, so that the battery pack 5 can be prevented from being subjected to the extrusion force in the Z direction or the Z-direction extrusion force received by the battery pack 5 can be reduced, and the safety of the vehicle can be improved.

In some embodiments of the present utility model, as shown in fig. 1, in the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), the width of the overlapping region may be M1, and the width of the first sub-beam 321 may be M2, where M1 and M2 satisfy the relationship: 0.25M2M 1 is less than or equal to 0.45M2. I.e., M1 may be any number between 0.25M2 and 0.45M2, for example, M1 may be, but is not limited to 0.25M2, 0.35M2, 0.45M2, etc. By the arrangement, the proportional relation between the width M1 of the overlapping area of the orthographic projection of the first sub-beam 321 and the orthographic projection of the battery pack 5 in the first direction and the width M2 of the first sub-beam 321 can be reasonable, so that reliable protection can be provided for the battery pack 5 in the Z direction.

In some embodiments of the present utility model, as shown in fig. 1, in the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), the length of the battery pack 5 may be M3, and M3 and M2 may satisfy the relationship: 0.045M3M 2 is less than or equal to 0.115M3. I.e., M2 may be any number between 0.045M3 and 0.115M3, for example, M2 may be, but is not limited to 0.045M3, 0.076M3, 0.115M3, etc. The arrangement can make the proportional relation between the width M2 of the first sub-beam 321 and the length M3 of the battery pack 5 reasonable, so that the first sub-beam 321 has enough width, the first sub-beam 321 has enough impact resistance, and reliable protection for the battery pack 5 is facilitated.

In some embodiments of the present utility model, as shown in fig. 1-3, each of the first and second stringers 311, 312 may have a plurality of extension beams 313, each of the plurality of extension beams 313 of the first stringer 311 may extend toward the second stringer 312, each of the plurality of extension beams 313 of the second stringer 312 may extend toward the first stringer 311, and the plurality of extension beams 313 of the first stringer 311 and the plurality of extension beams 313 of the second stringer 312 may correspond one-to-one to form a plurality of sets of extension beam sets 314.

The first longitudinal beam 311 and the second longitudinal beam 312 may have, but are not limited to, 2, 3, and 4 extension beams 313, and it should be explained that the first longitudinal beam 311 has the same number of extension beams 313 as the second longitudinal beam 312, for example, if the first longitudinal beam 311 has 2 extension beams 313, the second longitudinal beam 312 also has 2 extension beams 313, and the 2 extension beams 313 of the first longitudinal beam 311 and the 2 extension beams 313 of the second longitudinal beam 312 are disposed in a one-to-one correspondence, that is, one extension beam 313 of the first longitudinal beam 311 and one extension beam 313 of the second longitudinal beam 312 are opposite and spaced apart along the first direction to form a set of extension beam groups 314, and the other extension beam 313 of the first longitudinal beam 311 and the other extension beam 313 of the second longitudinal beam 312 are opposite and spaced apart along the first direction to form a set of extension beam groups 314.

A beam structure 32 may be connected between two extension beams 313 of each extension beam group 314, taking the example that the first longitudinal beam 311 and the second longitudinal beam 312 each have 2 extension beams 313, a beam structure 32 may be connected between one extension beam 313 of the first longitudinal beam 311 and one extension beam 313 of the second longitudinal beam 312, and a beam structure 32 may be connected between the other extension beam 313 of the first longitudinal beam 311 and the other extension beam 313 of the second longitudinal beam 312. Such an arrangement can further improve the structural strength and durability of the rear floor frame 3, and can further improve the NVH performance of the rear floor frame 3.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the beam structure 32 may further include: the second sub-cross member 322 (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), the distance between the second sub-cross member 322 and the front end of the side member structure 31 may be greater than the distance between the second sub-cross member 322 and the rear end of the side member structure 31.

As some alternative embodiments of the present application, the second sub-cross member 322 may be provided to extend in the width direction of the vehicle, and both ends of the second sub-cross member 322 may be connected to the extension beam 313. In the second direction (i.e., the longitudinal direction of the vehicle, i.e., the X direction shown in fig. 1), the distance between the second sub-cross member 322 and the front end of the side member structure 31 may be greater than the distance between the second sub-cross member 322 and the rear end of the side member structure 31, in other words, the second sub-cross member 322 may be located at a position midway rearward of the side member structure 31. The arrangement can lead the arrangement position of the second sub-beam 322 to be reasonable, and can improve the structural strength of the rear section in the rear floor frame 3.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the plurality of sets of extension beam sets 314 may be sequentially spaced apart in a second direction of the rear floor frame 3 (i.e., a length direction of the vehicle, i.e., an X direction shown in fig. 1), i.e., in the second direction, each of the plurality of sets of extension beam sets 314 has a spaced distance therebetween, wherein the second direction is perpendicular to the first direction. This arrangement makes it possible to rationalize the arrangement of the plurality of sets of extension beam groups 314, to equalize the structural strength of the rear floor frame 3 around, and it should be explained that if the plurality of sets of extension beam groups 314 are too close to each other, the rear floor frame 3 is difficult to produce (related to the production process), and by arranging the plurality of sets of extension beam groups in the second direction at intervals in order, the difficulty in producing the rear floor frame 3 can be reduced.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the plurality of sets of extension beams 314 may include: the first and second extension beam groups 3141 and 3142 may be disposed at intervals along a length direction of the vehicle, and the beam structure 32 may include first and second sub-beams 321 and 322. Wherein the first sub-beam 321 may be connected between the two extension beams 313 of the first extension beam group 3141, and the second sub-beam 322 may be connected between the two extension beams 313 of the second extension beam group 3142.

Specifically, the first extension beam group 3141 may include two extension beams 313, one of the extension beams 313 being an extension beam 313 of the first longitudinal beam 311 and the other being an extension beam 313 of the second longitudinal beam 312, and the first sub-cross beam 321 may be connected between the two extension beams 313 of the first extension beam group 3141. The second extension beam group 3142 may include two extension beams 313, one of the extension beams 313 being an extension beam 313 of the first longitudinal beam 311 and the other being an extension beam 313 of the second longitudinal beam 312, and the second sub-cross beam 322 may be connected between the two extension beams 313 of the second extension beam group 3142. The arrangement can make the rear floor frame 3 have two sets of extension beam sets 314, so that the structural strength of the rear floor frame 3 can be improved, and the production of the rear floor frame 3 can be simplified.

It will be appreciated that since the first sub-cross beam 321 is located in a forward middle position of the stringer structure 31, the first set of extension beams 3141 is also located in a forward middle position of the stringer structure 31, that is, the distance between the first set of extension beams 3141 and the front end of the stringer structure 31 is less than the distance between the first set of extension beams 3141 and the rear end of the stringer structure 31. The arrangement can lead the arrangement positions of the first sub-cross beam 321 and the first extension beam group 3141 to be reasonable, and can improve the structural strength of the front section in the rear floor frame 3.

It will be appreciated that since the second sub-cross member 322 is located at a position midway and rearward of the longitudinal beam structure 31, the second set of extension beams 3142 is also located at a position midway and rearward of the longitudinal beam structure 31, that is, the second set of extension beams 3142 is spaced from the front end of the longitudinal beam structure 31 more than the second set of extension beams 3142 is spaced from the rear end of the longitudinal beam structure 31. The arrangement of the second sub-beams 322 and the second extension beam groups 3142 can lead the arrangement positions to be reasonable, and can improve the structural strength of the rear section in the rear floor frame 3.

In some embodiments of the present utility model, as shown in fig. 1, in the third direction of the rear floor frame 3 (i.e., the width direction of the vehicle, i.e., the Y direction shown in fig. 1), the length of the first sub cross member 321 may be M5, the width of the battery pack 5 may be M6, and the M5 and M6 may satisfy the relationship: 0.25M6M 5 is less than or equal to 0.5M6. I.e., M5 may be any number between 0.25M6 and 0.5M6, for example, M5 may be, but is not limited to 0.25M6, 0.334M6, 0.40M6, 0.5M6, etc. The arrangement can make the proportional relation between the length M5 of the first sub-beam 321 and the width M6 of the battery pack 5 reasonable, so that the first sub-beam 321 has enough length, the first sub-beam 321 has enough impact resistance, and reliable protection for the battery pack 5 is facilitated.

The third direction is perpendicular to the first direction and the second direction.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the length of the second sub-cross member 322 may be M7 and the width of the battery pack 5 may be M6 in the third direction (i.e., the width direction of the vehicle, i.e., the Y direction shown in fig. 3), and M7 and M6 satisfy the relationship: 0.25M6M 7 is less than or equal to 0.5M6. I.e., M7 may be any number between 0.25M6 and 0.5M6, for example, M7 may be, but is not limited to 0.25M6, 0.334M6, 0.40M6, 0.5M6, etc. When the vehicle is in a rear collision, the second sub-beam 322 will bear an impact before the first sub-beam 321, so that the proportional relationship between the length M7 of the second sub-beam 322 and the width M6 of the battery pack 5 is reasonable, and the second sub-beam 322 has enough impact resistance.

In addition, by defining the proportional relationship between the length M5 of the first sub-beam 321 and the width M6 of the battery pack 5, and by defining the proportional relationship between the length M7 of the second sub-beam 322 and the width M6 of the battery pack 5, the relationship between the size of the entire beam structure 32 and the size of the battery pack 5 can be made reasonable, which is beneficial to providing reliable protection for the battery pack 5.

As some alternative embodiments of the present application, the rear floor frame 3 may employ an integral cold stamping forming scheme, which may improve material utilization, reduce production costs, and reduce the weight of the rear floor frame 3, thereby being advantageous to meet the lightweight design of the vehicle. Moreover, the integral cold stamping forming scheme is adopted, so that the size of the rear floor frame 3 is controlled accurately, and the size matching quality stability of the vehicle body can be ensured. In addition, the integral cold stamping forming scheme can realize less parts, reduce the matching difficulty of equipment and tools, reduce production procedures and improve production efficiency.

As some alternative embodiments of the present application, the integral cold stamping forming scheme may be performed by laser welding, then laser cutting, and finally integrally forming the sheet. As some optional embodiments of the application, the first sub-beam 321 and the extension beam 313, and the second sub-beam 322 and the extension beam 313 can be connected together through laser tailor-welding, so that overlapping flanges of the first sub-beam 321 and the second sub-beam 322 can be reduced, and weight and cost reduction are facilitated.

As some optional embodiments of the present application, as shown in fig. 2, the connection between the extension beam 313 and the first longitudinal beam 311, and the connection between the extension beam 313 and the second longitudinal beam 312 may be transited by an arc, so that the difficulty of stamping forming may be reduced.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the rear floor frame 3 may further include: the third cross member 33, the third cross member 33 may be connected between the first side member 311 and the second side member 312, that is, one end of the third cross member 33 may be connected with the first side member 311, the other end of the third cross member 33 may be connected with the second side member 312, and the third cross member 33 may be located between the first sub-cross member 321 and the second sub-cross member 322. It will be appreciated that the third cross member 33 is not connected to the extension beams 313 of the first and second cross members 311, 312, and that this arrangement does not require the first and second cross members 311, 312 to have the extension beams 313 connected to the third cross member 33, and that the number of extension beam sets 314 can be reduced, and that multiple sets of extension beam sets 314 can be avoided from being too close to each other, thereby facilitating a reduction in the difficulty in manufacturing the rear floor frame 3, and that by arranging the third cross member 33 between the first and second sub-cross members 321, 322, a structural strength of the middle portion of the rear floor frame 3 can be advantageously improved.

As some alternative embodiments of the present application, the third cross member 33 and the first and second longitudinal members 311 and 312 may be welded by lap welding.

Along the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 3), the distance between the third beam 33 and the first sub-beam 321 may be M8, the distance between the third beam 33 and the second sub-beam 322 may be M9, and the relationship between M8 and M9 may be satisfied: 0.854M9M 8 is less than or equal to 1.154M9. I.e., M8 may be any number between 0.854M9 and 1.154M9, for example, M8 may be, but is not limited to 0.854M9, 0.954M9, 1.023M9, 1.154M9, etc. The arrangement makes the proportional relationship between the distance M8 between the third beam 33 and the first sub-beam 321 and the distance M9 between the third beam 33 and the second sub-beam 322 reasonable, which is beneficial to improving the structural strength of the rear floor frame 3 and the durability of the rear floor frame 3.

In some embodiments of the present utility model, as shown in fig. 1, in the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), the second sub-beam 322 may be spaced apart from the battery pack 5 by a distance M10, and M10 may satisfy the relationship: m10 is 600mm or more and 750mm or less. I.e. M10 may be any number between 600mm and 750mm, for example, M10 may be, but is not limited to 600mm, 661mm, 670mm, 750mm, etc. The arrangement can lead the interval distance between the second sub-beam 322 and the battery pack 5 to be reasonable, thereby being beneficial to providing reliable protection for the battery pack 5.

In some embodiments of the present utility model, as shown in fig. 1, the third beam 33 may be spaced apart from the battery pack 5 by a distance M11 in the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), and M11 may satisfy the relationship: m11 is more than or equal to 250mm and less than or equal to 350mm. That is, M11 may be any number between 250mm and 350mm, for example, M11 may be, but is not limited to, 250mm, 300mm, 305mm, 350mm, etc. This arrangement makes the distance between the third beam 33 and the battery pack 5 reasonable, which is advantageous for providing reliable protection for the battery pack 5.

In some embodiments of the present utility model, as shown in fig. 1, in the second direction (i.e., the length direction of the vehicle, i.e., the X direction shown in fig. 1), the second sub-beam 322 may be spaced apart from the battery pack 5 by a distance M10, the third beam 33 may be spaced apart from the battery pack 5 by a distance M11, and the relationships M10 and M11 may be satisfied: M11/M10 is more than or equal to 0.4 and less than or equal to 0.5. That is, M11/M10 may be any value between 0.4 and 0.5, for example, M11/M10 may be, but not limited to, 0.4, 0.448, 0.461, 0.5, etc., so that the arrangement may make the ratio of the spacing distance M10 between the second sub-beam 322 and the battery pack 5 to the spacing distance M11 between the third beam 33 and the battery pack 5 reasonable, which is beneficial to reducing the probability of damage to the battery pack 5 due to the vehicle's rear collision, thereby being beneficial to improving the safety of the vehicle.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the rear floor frame 3 may further include: at least one end of the energy absorber 34, the first side member 311 and/or the second side member 312 may be provided with an energy absorber 34.

The first longitudinal beam 311 and the second longitudinal beam 312 may each extend in the longitudinal direction of the vehicle (i.e., the X direction shown in fig. 1). As some optional embodiments of the present application, the front end of the first longitudinal beam 311 may be provided with an energy absorber 34, as some optional embodiments of the present application, the rear end of the first longitudinal beam 311 may be provided with an energy absorber 34, as some optional embodiments of the present application, the front end of the second longitudinal beam 312 may be provided with an energy absorber 34, as some optional embodiments of the present application, the rear end of the second longitudinal beam 312 may be provided with an energy absorber 34.

As some alternative embodiments of the present application, the vehicle may have a threshold beam, the inner side of which may be provided with a sealing member, the sealing member may be used to seal a gap between the vehicle body and the battery pack 5, the first longitudinal beam 311, the second longitudinal beam 312 may be connected with the threshold beam and/or the sealing member, and by providing the energy absorbing member 34, when the vehicle collides, the energy absorbing member 34 may collapse and absorb energy to reduce the collision force transmitted to the front side of the vehicle, thereby reducing the impact force received by the battery pack 5, and also reducing the impact force received by the passengers in the passenger compartment, which is advantageous for improving the safety of the vehicle.

As some alternative embodiments of the present application, as shown in fig. 1 and 2, the rear ends of the first side member 311 and the second side member 312 may each be provided with an energy absorber 34.

It should be appreciated that the shape and size of the energy absorber 34 may vary depending on the size of the vehicle rear suspension.

The shapes of the first sub-beam 321, the second sub-beam 322, the third beam 33, and the battery pack 5 are not completely regular, and specifically, the width of the first sub-beam 321 may be understood as the width of any portion of the first sub-beam 321 along the second direction (i.e., the X direction shown in fig. 1), and may be understood as the same for other components, and the distance between the second sub-beam 322 and the battery pack 5 may be understood as the distance between any portion of the side of the second sub-beam 322 adjacent to the battery pack 5 along the second direction (i.e., the X direction shown in fig. 1), or may be understood as the distance between any portion of the side of the battery pack 5 adjacent to the second sub-beam 322 and the second sub-beam 322, and may be understood as the same for the distance between other components.

According to the vehicle according to the embodiment of the utility model, the rear floor frame 3 of the vehicle comprises the first longitudinal beam 311 and/or the second longitudinal beam 312 provided with the extension beams 313 extending towards each other and the cross beam structure 32 is connected with the corresponding extension beams 313, so that the structural strength and durability of the rear floor frame 3 can be improved, the structural strength requirement of the vehicle body can be met by the rear floor frame 3, the safety of the vehicle can be improved, and the front projection of the cross beam structure 32 and the front projection of the battery pack 5 have overlapping areas along the first direction, and the cross beam structure 32 can provide protection for the battery pack 5 along the first direction, thereby being beneficial to improving the safety of the vehicle.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A rear floor frame of a vehicle, comprising:

a stringer structure comprising first and second stringers spaced apart and oppositely disposed, the first and/or second stringers having extension beams extending toward each other;

the beam structure is connected between the first longitudinal beam and the second longitudinal beam and is connected with the corresponding extension beam;

the longitudinal beam structure is adapted to be connected with a battery pack of the vehicle, and the front projection of the cross beam structure and the front projection of the battery pack have overlapping areas along a first direction of the rear floor frame.

2. The rear floor frame of a vehicle of claim 1, wherein said cross-beam structure comprises: and the distance between the first sub-beam and the front end of the longitudinal beam structure is smaller than that between the first sub-beam and the rear end of the longitudinal beam structure along the second direction of the rear floor frame, and the orthographic projection of the first sub-beam and the orthographic projection of the battery pack along the first direction have an overlapping area, wherein the second direction is perpendicular to the first direction.

3. The rear floor frame of a vehicle according to claim 2, wherein the width of the overlapping area is M1 and the width of the first sub cross member is M2 in the second direction, satisfying a relation 0.25M2 m1.ltoreq. 0.45M2.

4. A rear floor frame of a vehicle according to claim 3, wherein in the second direction, the battery pack has a length M3 satisfying the relation: 0.045M3M 2 is less than or equal to 0.115M3.

5. The rear floor frame of a vehicle of claim 2, wherein each of said first and second stringers has a plurality of extension beams extending toward each other, said plurality of extension beams of said first stringer and said plurality of extension beams of said second stringer being in one-to-one correspondence to form a plurality of sets of extension beams, each of said sets of extension beams having said cross beam structure connected between two of said extension beams.

6. The rear floor frame of a vehicle of claim 5, wherein said cross-beam structure further comprises: and the distance between the second sub-cross beam and the front end of the longitudinal beam structure is greater than that between the second sub-cross beam and the rear end of the longitudinal beam structure along the second direction.

7. The rear floor frame of claim 6, wherein the first sub-cross member has a length M5 and the battery pack has a width M6 in the third direction of the rear floor frame, satisfying the relationship: 0.25M6M 5 is less than or equal to 0.5M6, wherein the third direction is perpendicular to the first direction and the second direction.

8. The rear floor frame of a vehicle of claim 7, wherein the second sub-cross member has a length M7 in the third direction that satisfies the relationship: 0.25M6M 7 is less than or equal to 0.5M6.

9. The rear floor frame of a vehicle of claim 6, further comprising: the third cross beam is connected between the first longitudinal beam and the second longitudinal beam and is positioned between the first sub-cross beam and the second sub-cross beam;

along the second direction, the distance between the third beam and the first sub-beam is M8, and the distance between the third beam and the second sub-beam is M9, so that the relation is satisfied: 0.854M9M 8 is less than or equal to 1.154M9.

10. The rear floor frame of claim 6, wherein in the second direction, the second sub-beam is spaced apart from the battery pack by a distance M10 satisfying the relationship: m10 is 600mm or more and 750mm or less.

11. The rear floor frame of a vehicle of claim 9, wherein in the second direction, the third cross member is spaced apart from the battery pack by a distance M11 satisfying the relationship: m11 is more than or equal to 250mm and less than or equal to 350mm.

12. The rear floor frame of claim 9, wherein in the second direction, the second sub-beam is spaced apart from the battery pack by a distance M10 and the third beam is spaced apart from the battery pack by a distance M11, satisfying the relationship: M11/M10 is more than or equal to 0.4 and less than or equal to 0.5.

13. A vehicle characterized by comprising a rear floor frame of a vehicle according to any one of claims 1-12.