Electric vehicle frame assembly and electric vehicle

Abstract

The utility model relates to an electric vehicle frame assembly and an electric vehicle, the electric vehicle frame assembly is used for forming an upper cover assembly of a battery shell, the electric vehicle frame assembly comprises a first threshold (11) and a second threshold (12), the first threshold (11) and the second threshold (12) extend in a first direction (x), the first threshold (11) and the second threshold (12) are arranged in a spaced mode in a second direction (y), and the second direction (y) is perpendicular to the first direction (x); the first cross beam (21) extends in the second direction (y), the first cross beam (21) is connected between the middle area of the first threshold (11) and the middle area of the second threshold (12), the first cross beam (21) comprises a transverse part (210) and a vertical part (211) which are integrally formed, the transverse part (210) serves as a seat cross beam of the electric vehicle, the vertical part (211) is connected to the side, away from a seat, of the transverse part (210), and the vertical part (211) is connected to the side, away from the seat, of the vertical part (211). The vertical portion (211) extends in a third direction (z) and serves as a battery expansion beam for an electric vehicle.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric vehicle structures, and in particular to an electric vehicle frame assembly and an electric vehicle. Background Art

[0002] At present, the battery packs of electric vehicles are mostly installed under the chassis or body. The battery housing is set independently, and the battery pack is connected to the seat beam through a sleeve. There are many parts, complex structure, high cost and the risk of airtight failure. Utility Model Content

[0003] Embodiments of the present disclosure provide an electric vehicle frame assembly and an electric vehicle, which can reduce the structural complexity of the electric vehicle frame assembly.

[0004] According to a first aspect of the present disclosure, an electric vehicle frame assembly is provided for forming an upper cover assembly of a battery housing. The electric vehicle frame assembly includes:

[0005] A first threshold and a second threshold both extend along a first direction, the first threshold and the second threshold are spaced apart along a second direction, and the second direction is perpendicular to the first direction; and

[0006] A first cross beam extends along the second direction and is connected between the middle area of ​​the first door sill and the second door sill. The first cross beam includes an integrally formed cross portion and a vertical portion. The cross portion serves as a seat cross beam of the electric vehicle. The vertical portion is connected to a side of the cross portion away from the seat. The vertical portion extends along a third direction and serves as a battery expansion beam of the electric vehicle. The third direction is perpendicular to the first direction and the second direction.

[0007] The electric vehicle frame assembly of this embodiment has a simple and reliable structure. By integrating the horizontal and vertical parts to form a first crossbeam, the body seat crossbeam and the battery expansion beam can be integrated. By integrating the battery housing into the frame, the rigidity of the battery pack and the entire vehicle can be increased, and the side collision performance of the entire vehicle can be improved. Compared with the related art, this embodiment can eliminate the sleeve structure, avoid the risk of airtight failure at the sleeve, reduce the number of parts, and reduce the production cost of the electric vehicle frame assembly and the electric vehicle.

[0008] In some embodiments, the electric vehicle frame assembly further comprises:

[0009] a second crossbeam extending along a second direction, the second crossbeam being connected between the first end of the first threshold and the first end of the second threshold; and / or

[0010] The third cross beam extends along the second direction and is connected between the second end of the first threshold and the second end of the second threshold.

[0011] The second crossbeam and the third crossbeam of this embodiment can significantly enhance the structural rigidity of the entire frame, provide more support points during a collision, effectively absorb and disperse impact energy, reduce direct impact on occupants and batteries, and improve vehicle safety.

[0012] In some embodiments,

[0013] The first door sill, the second door sill, the first cross beam and the second cross beam enclose a first area, and the electric vehicle frame assembly further includes a first floor, and the first floor is used to enclose the first area; and / or

[0014] The first door sill, the second door sill, the first cross beam and the third cross beam enclose a second area. The electric vehicle frame assembly also includes a second floor, which is used to enclose the second area.

[0015] In this embodiment, the first floor encloses the first area and the second floor encloses the second area, so that the frame forms a sealed upper cover of the battery housing, which can increase the rigidity of the battery pack and the entire vehicle and improve the side impact performance of the entire vehicle.

[0016] In some embodiments, the first region and the second region have the same area.

[0017] The first and second areas of this embodiment have the same area, making the structural distribution of the bottom of the vehicle more balanced, helping to improve the overall stability of the vehicle, reducing vibration and shaking caused by structural unevenness during driving, and improving the driving experience.

[0018] In some embodiments,

[0019] A first floor panel is connected to the side of the transverse portion remote from the seat; and / or

[0020] The second floor is connected to the side of the cross portion away from the seat.

[0021] The first floor and the second floor of this embodiment are connected to the side of the cross part away from the seat, so that the floor can be installed from the bottom up and fixed in the rectangular frame formed by the cross beams and the door sills. This can simplify the assembly process of the floor and improve the sealing performance of the frame assembly as the upper cover of the battery casing.

[0022] In some embodiments, the first floor panel and / or the second floor panel are connected to the electric vehicle frame assembly by hot melt fasteners.

[0023] This embodiment uses hot-melt fasteners to connect the floor and the frame assembly, which has the advantages of single-sided operation, connection of various materials, high connection strength, strong earthquake resistance, removable screws, and a clean working environment.

[0024] In some embodiments,

[0025] A first step is provided on the side walls of the first threshold, the second threshold, the first crossbeam and the second crossbeam close to the first area, and the first step is used to position the first floor; and / or

[0026] A second step portion is provided on the side walls of the first door sill, the second door sill, the first crossbeam and the third crossbeam close to the second area, and the second step portion is used to position the second floor.

[0027] This embodiment, by providing a first step portion and a second step portion, can ensure that the floor can be accurately aligned during installation, thereby improving assembly accuracy; the step portion can provide a larger contact area, making the connection between the floor and the door sill and the crossbeam more secure, and can increase the connection strength, thereby improving the stability and sealing of the electric vehicle frame assembly.

[0028] In some embodiments, along the first direction, the first cross beam is located at a position equally dividing the first threshold and the second threshold.

[0029] In this embodiment, by locating the first cross beam at a position equally dividing the first door sill and the second door sill, the structural distribution of the bottom of the vehicle is more balanced, which helps to improve the overall stability of the vehicle.

[0030] In some embodiments, along the first direction, a size of the horizontal portion is larger than a size of the vertical portion, and the vertical portion is located in the middle of the horizontal portion.

[0031] In this embodiment, by locating the vertical portion in the middle of the horizontal portion, the structural distribution of the vehicle bottom is more balanced, which helps to improve the overall stability of the vehicle.

[0032] According to a second aspect of the present disclosure, an electric vehicle is provided, comprising:

[0033] The electric vehicle frame assembly of the above embodiment forms an upper cover assembly; and

[0034] The battery base plate cooperates with the upper cover assembly to form the battery shell.

[0035] In the electric vehicle of this embodiment, the electric vehicle frame assembly cooperates with the battery base plate to form a battery housing. The electric vehicle frame assembly is integrated into the vehicle frame as an upper cover component, which can increase the rigidity of the battery pack and the entire vehicle and improve the side collision performance of the electric vehicle. The electric vehicle frame assembly has a small number of parts, and the first crossbeam is manufactured at a low production cost through one-piece molding, so the production cost of the electric vehicle is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0037] Figure 1Schematic diagrams of the structures of some embodiments of the electric vehicle frame assembly disclosed herein.

[0038] Figure 2 1 is a side view of some embodiments of the electric vehicle frame assembly disclosed herein.

[0039] Figure 3 Schematic diagrams of the structures of some embodiments of the electric vehicle disclosed herein after the frame assembly is connected to the floor.

[0040] Description of Reference Numerals

[0041] 11. First threshold; 12. Second threshold; 21. First crossbeam; 210. Horizontal portion; 211. Vertical portion; 22. Second crossbeam; 23. Third crossbeam; 100. First area; 101. First floor; 111. First step; 200. Second area; 202. Second floor; 222. Second step; x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0043] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0045] All terms (including technical or scientific terms) used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0046] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0047] Based on the above-mentioned embodiments of the present disclosure, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0048] First, the present disclosure proposes an electric vehicle frame assembly for forming an upper cover component of a battery housing, such as Figures 1 to 3 As shown, the electric vehicle frame assembly includes:

[0049] The first threshold 11 and the second threshold 12 both extend along the first direction x, and the first threshold 11 and the second threshold 12 are spaced apart along the second direction y, and the second direction y is perpendicular to the first direction x; and

[0050] The first cross beam 21 extends along the second direction y and is connected between the middle areas of the first door sill 11 and the second door sill 12. The first cross beam 21 includes an integrally formed cross portion 210 and a vertical portion 211. The cross portion 210 serves as a seat cross beam of the electric vehicle. The vertical portion 211 is connected to a side of the cross portion 210 away from the seat. The vertical portion 211 extends along the third direction z and serves as a battery expansion beam of the electric vehicle. The third direction z is perpendicular to the first direction x and the second direction y.

[0051] Specifically, the battery expansion beam is a partition beam in the battery, which is used to divide the space in the battery housing into different battery cell accommodating spaces. The projection of the first cross beam 21 along the second direction y is a T-shaped structure.

[0052] Specifically, the first crossbeam 21 is a composite structure consisting of a horizontal portion 210 and a vertical portion 211. This structure not only provides stable support for the seat but also serves as the upper cover for the battery housing, enhancing battery safety and improving the impact resistance and rigidity of the vehicle frame. The integrated construction of the horizontal and vertical portions 210 and 211 eliminates the need for separate assembly of the seat crossbeam and battery expansion beam in traditional designs, reducing the number of parts, simplifying the assembly process, and lowering production costs.

[0053] Optionally, the electric vehicle may include a pure electric vehicle or a hybrid electric vehicle, and may also include a sedan, SUV, or commercial vehicle. Optionally, along the first direction x, the position and size of the transverse portion 210 and the vertical portion 211 are not limited. That is, the size of the transverse portion 210 may be larger or smaller than the size of the vertical portion 211. The vertical portion 211 may be located in the middle of the transverse portion 210 or connected to any other position of the transverse portion 210. Optionally, the transverse portion 210 and the vertical portion 211 each include multiple frame structures, and the multiple frame structures are extruded integrally.

[0054] The electric vehicle frame assembly of the disclosed embodiment has a simple and reliable structure. By integrating the horizontal portion 210 and the vertical portion 211 to form a first crossbeam 21, the vehicle body seat crossbeam and the battery expansion beam can be integrated. By integrating the battery housing into the frame, the rigidity of the battery pack and the entire vehicle can be increased, thereby improving the side impact performance of the entire vehicle. Compared with the related art, this embodiment can eliminate the sleeve structure, avoid the risk of airtight failure at the sleeve, reduce the number of parts, reduce the structural complexity of the electric vehicle frame assembly, and reduce the production cost of the electric vehicle frame assembly and the electric vehicle.

[0055] In some embodiments, as Figures 1 to 3 As shown, the electric vehicle frame assembly also includes:

[0056] A second crossbeam 22 extends along the second direction y, and the second crossbeam 22 is connected between the first end of the first threshold 11 and the first end of the second threshold 12; and / or

[0057] The third cross beam 23 extends along the second direction y and is connected between the second end of the first threshold 11 and the second end of the second threshold 12 .

[0058] Specifically, the second crossbeam 22 can be a front crossbeam, and the third crossbeam 23 can be a rear crossbeam. The first crossbeam 21, the second crossbeam 22, the third crossbeam 23, the first door sill 11, and the second door sill 12 can be connected by welding or other means to form a "sun"-shaped closed frame structure. Along the first direction x, the second crossbeam 22 and the third crossbeam 23 are respectively located on both sides of the first crossbeam 21.

[0059] Specifically, the second cross beam 22 is connected between the first ends of the first door sill 11 and the second door sill 12, and the third cross beam 23 is connected between the second ends of the first door sill 11 and the second door sill 12, which can significantly enhance the structural rigidity of the entire frame and improve the stability and safety of the vehicle under various working conditions.

[0060] Optionally, the second crossbeam 22 and the third crossbeam 23 each include a plurality of frame structures. Optionally, the third crossbeam 23 includes a greater number of frame structures than the second crossbeam 22, or in other words, the frame structures within the third crossbeam 23 are more densely arranged.

[0061] The second crossbeam 22 and the third crossbeam 23 of this embodiment can significantly enhance the structural rigidity of the entire frame, provide more support points during a collision, effectively absorb and disperse impact energy, reduce direct impact on occupants and batteries, and improve vehicle safety.

[0062] In some embodiments, as Figures 1 to 3 As shown,

[0063] The first door sill 11, the second door sill 12, the first cross beam 21 and the second cross beam 22 enclose a first area 100, and the electric vehicle frame assembly further includes a first floor 101, which is used to enclose the first area 100; and / or

[0064] The first door sill 11 , the second door sill 12 , the first cross beam 21 and the third cross beam 23 enclose a second area 200 . The electric vehicle frame assembly further includes a second floor 202 , which is used to enclose the second area 200 .

[0065] Specifically, the first region 100 is surrounded by a portion of the first and second thresholds 11 and 12, while the second region 200 is surrounded by another portion of the first and second thresholds 11 and 12. With the first floor panel 101 and the second floor panel 202 enclosing the first and second regions 100 and 200, respectively, the entire electric vehicle frame assembly can serve as a sealed upper cover assembly for the battery housing. Optionally, the areas of the first and second regions 100 and 200 can be the same or different, and correspondingly, the areas of the first and second floor panels 101 and 202 can be the same or different.

[0066] In this embodiment, the first floor 101 encloses the first area 100 and the second floor 202 encloses the second area 200, so that the frame forms a sealed upper cover of the battery housing, which can increase the rigidity of the battery pack and the entire vehicle and improve the side impact performance of the entire vehicle.

[0067] In some embodiments, the first region 100 and the second region 200 have the same area.

[0068] Optionally, the first floor panel 101 and the second floor panel 202 have the same area, which can reduce the production cost of the electric vehicle frame assembly.

[0069] The first region 100 and the second region 200 of this embodiment have the same area, which makes the structural distribution of the bottom of the vehicle more balanced, helps to improve the overall stability of the vehicle, can reduce the vibration and shaking caused by structural unevenness during driving, and enhance the driving experience.

[0070] In some embodiments, as Figures 1 to 3 As shown,

[0071] The first floor panel 101 is connected to the side of the transverse portion 210 away from the seat; and / or

[0072] The second floor panel 202 is connected to the side of the cross portion 210 away from the seat.

[0073] Specifically, along the third direction z, the first floor panel 101 is connected to the first and second sills 11 and 12, and to the side of the first and second crossbeams 21 and 22 away from the seat. Along the third direction z, the second floor panel 202 is connected to the side of the first and second sills 11 and 12, and to the side of the first and third crossbeams 21 and 23 away from the seat. Along the first direction x, the first and second floor panels 101 and 102 are located on either side of the vertical portion 211, respectively.

[0074] Optionally, the first floor panel 101 and the second floor panel 202 may be connected to the beams and the door sills by any connection method such as screw connection, welding, or flow drill screw (FDS).

[0075] The first floor 101 and the second floor 202 of this embodiment are connected to the side of the cross portion 210 away from the seat, so that the floor can be installed from the bottom up and fixed in the rectangular frame formed by the beams and the door sills, which can simplify the assembly process of the floor and improve the sealing performance of the frame assembly as the upper cover of the battery housing.

[0076] In some embodiments, the first floor panel 101 and / or the second floor panel 202 are connected to the electric vehicle frame assembly via hot melt fasteners.

[0077] Optionally, the first floor panel 101 and / or the second floor panel 202 may be connected to the electric vehicle frame assembly by a flow drilling screw process, that is, a forming process in which frictional heat is generated to produce plastic deformation, followed by self-tapping and screwing.

[0078] This embodiment uses hot-melt fasteners to connect the floor and the frame assembly, which has the advantages of single-sided operation, connection of various materials, high connection strength, strong earthquake resistance, removable screws, and a clean working environment.

[0079] In some embodiments, as Figures 1 to 3 As shown,

[0080] A first step 111 is provided on the side walls of the first threshold 11, the second threshold 12, the first crossbeam 21 and the second crossbeam 22 close to the first area 100, and the first step 111 is used to position the first floor 101; and / or

[0081] A second step portion 222 is provided on the side walls of the first door sill 11 , the second door sill 12 , the first crossbeam 21 and the third crossbeam 23 close to the second area 200 . The second step portion 222 is used to position the second floor 202 .

[0082] This embodiment, by providing the first step portion 111 and the second step portion 222, can ensure that the floor can be accurately aligned during installation, thereby improving assembly accuracy; the step portion can provide a larger contact area, making the connection between the floor and the door sill and the crossbeam more secure, and can increase the connection strength, thereby improving the stability and sealing of the electric vehicle frame assembly.

[0083] In some embodiments, along the first direction x, the first cross beam 21 is located at a position equally dividing the first door sill 11 and the second door sill 12 .

[0084] In this embodiment, the first cross beam 21 is located at a position that divides the first door sill 11 and the second door sill 12 equally, so that the structural distribution of the bottom of the vehicle is more balanced, which helps to improve the overall stability of the vehicle.

[0085] In some embodiments, as Figure 2 As shown, along the first direction x, the size of the transverse portion 210 is larger than the size of the vertical portion 211 , and the vertical portion 211 is located in the middle of the transverse portion 210 .

[0086] In this embodiment, the vertical portion 211 is located in the middle of the horizontal portion 210 , so that the structural distribution of the bottom of the vehicle is more balanced, which helps to improve the overall stability of the vehicle.

[0087] In some specific embodiments, Figure 3 As shown, the electric vehicle frame assembly includes:

[0088] The first threshold 11 and the second threshold 12 both extend along the first direction x. The first threshold 11 and the second threshold 12 are spaced apart along the second direction y, and the second direction y is perpendicular to the first direction x.

[0089] a first crossbeam 21 extending along a second direction y, the first crossbeam 21 being connected between the middle regions of the first door sill 11 and the second door sill 12, the first crossbeam 21 including an integrally formed cross portion 210 and a vertical portion 211, the cross portion 210 serving as a seat crossbeam of the electric vehicle, the vertical portion 211 being connected to a side of the cross portion 210 away from the seat, the vertical portion 211 extending along a third direction z and serving as a battery expansion beam of the electric vehicle, the third direction z being perpendicular to the first direction x and the second direction y;

[0090] a second crossbeam 22 extending along the second direction y, the second crossbeam 22 being connected between the first end of the first threshold 11 and the first end of the second threshold 12; and / or a third crossbeam 23 extending along the second direction y, the third crossbeam 23 being connected between the second end of the first threshold 11 and the second end of the second threshold 12; and

[0091] The first door sill 11, the second door sill 12, the first crossbeam 21 and the second crossbeam 22 enclose a first area 100, and the electric vehicle frame assembly further includes a first floor 101, which is used to enclose the first area 100; and / or the first door sill 11, the second door sill 12, the first crossbeam 21 and the third crossbeam 23 enclose a second area 200, and the electric vehicle frame assembly further includes a second floor 202, which is used to enclose the second area 200;

[0092] Among them, the first door sill 11, the second door sill 12, the first crossbeam 21 and the second crossbeam 22 are provided with a first step portion 111 on the side wall close to the first area 100, and the first step portion 111 is used to position the first floor 101; and / or the first door sill 11, the second door sill 12, the first crossbeam 21 and the third crossbeam 23 are provided with a second step portion 222 on the side wall close to the second area 200, and the second step portion 222 is used to position the second floor 202; the first floor 101 and / or the second floor 202 are connected to the electric vehicle frame assembly by hot-melt fasteners.

[0093] The electric vehicle frame assembly of this embodiment has a simple and reliable structure. By integrating the horizontal portion 210 and the vertical portion 211 to form a first crossbeam 21, the body seat crossbeam and the battery expansion beam can be integrated; by integrating the battery housing into the frame, the rigidity of the battery pack and the entire vehicle can be increased, and the side impact performance of the entire vehicle can be improved; the first area 100 is enclosed by the first floor 101, and the second area 200 is enclosed by the second floor 202, so that the frame forms a sealed upper cover for the battery housing; by providing the first step portion 111 and the second step portion 222, it can be ensured that the floor can be accurately aligned during installation, thereby improving assembly accuracy; the floor and the frame assembly are connected with hot-melt fasteners, which have the advantages of single-sided operation, connection of multiple materials, high connection strength, strong earthquake resistance, removable screws, and a clean working environment.

[0094] Secondly, the present disclosure proposes an electric vehicle, comprising:

[0095] The electric vehicle frame assembly of the above embodiment forms an upper cover assembly; and

[0096] The battery base plate cooperates with the upper cover assembly to form the battery shell.

[0097] In the electric vehicle of this embodiment, the electric vehicle frame assembly cooperates with the battery base plate to form a battery housing. The electric vehicle frame assembly is integrated into the vehicle frame as an upper cover component, which can increase the rigidity of the battery pack and the entire vehicle and improve the side collision performance of the electric vehicle. The electric vehicle frame assembly has a small number of parts, and the first crossbeam 21 is manufactured at a low production cost through one-piece molding, so the production cost of the electric vehicle is low.

[0098] The above is a detailed introduction to an electric vehicle frame assembly and an electric vehicle provided by the present disclosure. Specific embodiments are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and core ideas of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. An electric vehicle frame assembly, characterized in that: An upper cover assembly for forming a battery housing, the electric vehicle frame assembly comprising: A first threshold (11) and a second threshold (12) both extend along a first direction (x), the first threshold (11) and the second threshold (12) are spaced apart along a second direction (y), and the second direction (y) is perpendicular to the first direction (x); and A first crossbeam (21) extends along the second direction (y), the first crossbeam (21) is connected between the middle areas of the first door sill (11) and the second door sill (12), the first crossbeam (21) includes an integrally formed cross portion (210) and a vertical portion (211), the cross portion (210) serving as a seat crossbeam of the electric vehicle, the vertical portion (211) being connected to a side of the cross portion (210) away from the seat, the vertical portion (211) extending along a third direction (z) and serving as a battery expansion beam of the electric vehicle, the third direction (z) being perpendicular to the first direction (x) and the second direction (y).

2. The electric vehicle frame assembly according to claim 1, characterized in that: Also includes: a second crossbeam (22) extending along the second direction (y), the second crossbeam (22) being connected between a first end of the first threshold (11) and a first end of the second threshold (12); and / or A third crossbeam (23) extends along the second direction (y), and the third crossbeam (23) is connected between the second end of the first threshold (11) and the second end of the second threshold (12).

3. The electric vehicle frame assembly according to claim 2, characterized in that: The first threshold (11), the second threshold (12), the first crossbeam (21) and the second crossbeam (22) enclose a first area (100), and the electric vehicle frame assembly further comprises a first floor (101), the first floor (101) being used to enclose the first area (100); and / or The first threshold (11), the second threshold (12), the first crossbeam (21), and the third crossbeam (23) enclose a second area (200), and the electric vehicle frame assembly further comprises a second floor (202), and the second floor (202) is used to enclose the second area (200).

4. The electric vehicle frame assembly according to claim 3, characterized in that: The first region (100) and the second region (200) have the same area.

5. The electric vehicle frame assembly according to claim 3, characterized in that: The first floor (101) is connected to the side of the transverse portion (210) away from the seat; and / or The second floor (202) is connected to the side of the transverse portion (210) away from the seat.

6. The electric vehicle frame assembly according to claim 3, characterized in that: The first floor (101) and / or the second floor (202) are connected to the electric vehicle frame assembly via hot melt fasteners.

7. The electric vehicle frame assembly according to claim 3, characterized in that: A first step portion (111) is provided on the side walls of the first threshold (11), the second threshold (12), the first crossbeam (21), and the second crossbeam (22) close to the first area (100), and the first step portion (111) is used to position the first floor (101); and / or A second step portion (222) is provided on the side walls of the first threshold (11), the second threshold (12), the first crossbeam (21), and the third crossbeam (23) close to the second area (200), and the second step portion (222) is used to position the second floor (202).

8. The electric vehicle frame assembly according to any one of claims 1 to 7, characterized in that: Along the first direction (x), the first crossbeam (21) is located at a position that equally divides the first threshold (11) and the second threshold (12).

9. The electric vehicle frame assembly according to any one of claims 1 to 7, characterized in that: Along the first direction (x), the size of the transverse portion (210) is greater than the size of the vertical portion (211), and the vertical portion (211) is located in the middle of the transverse portion (210).

10. An electric vehicle, characterized in that: include: The electric vehicle frame assembly according to any one of claims 1 to 9, forming the upper cover assembly; and The battery bottom plate cooperates with the upper cover assembly to form the battery housing.

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