Frame assembly and electric vehicle

Abstract

The application relates to the technical field of electric vehicles, in particular to a frame assembly and an electric vehicle. The frame assembly comprises a frame and a battery frame; the frame comprises two first longitudinal beams; the battery frame is arranged below the two first longitudinal beams and encloses the two first longitudinal beams to form a double-layer containing space; the battery frame comprises a first support frame and a second support frame; the first support frame is connected with the two first longitudinal beams, and the first support frame and the two first longitudinal beams enclose an upper-layer containing space; the second support frame is arranged below the first support frame and connected with the first support frame, and the second support frame and the first support frame enclose a lower-layer containing space. The upper-layer containing space and the lower-layer containing space of the frame assembly can contain battery packs respectively, so that two battery packs are arranged in a stacked mode on the frame. While the endurance of the electric vehicle is ensured, the space of the frame occupied by the two battery packs can be reduced, and the installation of other components on the chassis is facilitated.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and more particularly to a chassis assembly and an electric vehicle. Background Technology

[0002] With the rapid development of the electric light truck market, users have increasingly higher demands for the range and load-bearing capacity of electric light trucks, and the capacity and size of battery packs are also increasing accordingly.

[0003] Currently, to ensure the range of electric vehicles such as electric light trucks, battery packs are fixed to both sides of the vehicle frame using brackets. However, the battery packs occupy a significant amount of space in the frame, making it inconvenient to install other components on the chassis. Utility Model Content

[0004] Based on this, this application provides a chassis assembly and an electric vehicle to solve the problem in the related art that the battery pack occupies a large space in the chassis, making it inconvenient to install other components on the chassis.

[0005] In a first aspect, embodiments of this application provide a vehicle frame assembly, including a vehicle frame and a battery frame;

[0006] The frame includes two first longitudinal beams;

[0007] The battery frame is positioned below the two first longitudinal beams and encloses the two first longitudinal beams to form a double-layered housing space;

[0008] The battery frame includes a first support frame and a second support frame. The first support frame is connected to two first longitudinal beams, and the first support frame and the two first longitudinal beams enclose an upper receiving space. The second support frame is located below the first support frame and is connected to the first support frame. The second support frame and the first support frame enclose a lower receiving space.

[0009] In one possible implementation, the first support frame includes two second longitudinal beams and at least two second crossbeams disposed between the two second longitudinal beams. The two first longitudinal beams are respectively connected to the two first longitudinal beams, and the two first longitudinal beams, the two second longitudinal beams, and the at least two second crossbeams enclose an upper accommodating space.

[0010] In one possible implementation, the battery frame also includes multiple side panels, which are located on both sides of the first support frame and the second support frame, respectively. Each side panel is connected to the second longitudinal beam and the second support frame, and the first support frame, the second support frame, and the multiple side panels enclose a lower accommodating space.

[0011] The top of each side panel extends beyond the second longitudinal beam and connects to the first longitudinal beam.

[0012] In one possible implementation, a support rod is provided at the end of the battery frame, and the two ends of the support rod are respectively connected to a first support frame and a second support frame.

[0013] In one possible implementation, at least one pair of support rods are provided at each end of the battery frame, the pairs of support rods are arranged crosswise, and each support rod is fastened to the first support frame and the second support frame by fasteners.

[0014] In one possible implementation, the lower flanges of each first longitudinal beam are fixed to the top surface of the second longitudinal beam by fasteners.

[0015] Each side panel is fixed to the first longitudinal beam, the second longitudinal beam, and the second support frame by fasteners.

[0016] In one possible implementation, along the length of the frame, the side plate includes a protrusion and two connecting parts located on opposite sides of the protrusion. The protrusion protrudes in a direction away from the double-layer receiving space and extends along the length of the side plate. Each connecting part is connected to the first longitudinal beam, the second longitudinal beam, and the second support frame, respectively.

[0017] In one possible implementation, the first support frame also includes several reinforcing beams, each of which is connected between two second longitudinal beams.

[0018] In one possible implementation, a gap is defined between two adjacent second crossbeams, and reinforcing beams are arranged in a cross pattern only in a portion of the gap.

[0019] Secondly, embodiments of this application provide an electric vehicle, including a first battery pack, a second battery pack, and the aforementioned vehicle frame assembly;

[0020] The first battery pack is installed in the upper housing space of the frame assembly;

[0021] The second battery pack is installed in the lower compartment of the chassis assembly.

[0022] The vehicle frame assembly and electric vehicle provided in this application include a frame and a battery frame. The battery frame is disposed below two first longitudinal beams of the frame and encloses the two first longitudinal beams to form a double-layered housing space. The battery frame includes a first support frame and a second support frame. The first support frame is connected to the two first longitudinal beams and encloses the two first longitudinal beams to form an upper housing space. The second support frame is disposed below the first support frame and connected to the first support frame, and encloses the first support frame to form a lower housing space. In this way, the upper and lower housing spaces of the frame assembly can respectively accommodate battery packs, allowing the two battery packs to be stacked on the frame. While ensuring the range of the electric vehicle, it can reduce the frame space occupied by the two battery packs, providing convenience for the installation of other components on the chassis. The first support frame of the battery frame is connected to the two first longitudinal beams respectively, which can also improve the strength and rigidity of the frame. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram showing the connection between the vehicle frame assembly, the first battery pack, and the second battery pack provided in an embodiment of this application;

[0025] Figure 2 Schematic diagram of the vehicle frame assembly provided in the embodiments of this application Figure 1 ;

[0026] Figure 3 Schematic diagram of the vehicle frame assembly provided in the embodiments of this application Figure 2 ;

[0027] Figure 4 A schematic diagram of the battery frame provided in the embodiments of this application. Figure 1 ;

[0028] Figure 5 A schematic diagram of the battery frame provided in the embodiments of this application. Figure 2 ;

[0029] Figure 6 for Figure 4 A partially enlarged schematic diagram of the location of the central side panel;

[0030] Figure 7 This is a partial structural diagram showing the connection between the vehicle frame assembly, the first battery pack, and the second battery pack, as provided in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Frame; 110 - First longitudinal beam; 120 - First crossbeam;

[0033] 200-Battery frame; 210-First support frame; 211-Second longitudinal beam; 212-Second crossbeam; 213-Reinforcing beam; 214-Gap area; 220-Second support frame; 230-Side upright plate; 231-Protruding rib; 232-Connecting part; 240-Support rod;

[0034] 300 - First Battery Pack;

[0035] 400 - Second battery pack. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] The terms “first,” “second,” and “third” (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0040] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0041] In existing technology, to ensure the range of electric vehicles such as electric light trucks, battery packs are installed on both sides of the vehicle frame. The frame includes two longitudinal beams, and a battery pack is mounted on each side of the two longitudinal beams via a frame. The two battery packs occupy a large amount of space in the frame, making it inconvenient to install other components on the chassis.

[0042] After repeated consideration and verification, the inventors discovered that if two battery packs are stacked on the vehicle frame via a battery frame, with the first support frame of the battery frame connected to two longitudinal beams of the frame, forming an upper accommodating space between the first support frame and the two longitudinal beams, and the second support frame of the battery frame positioned below and connected to the first support frame, forming a lower accommodating space between the second support frame and the first support frame, each of the upper and lower accommodating spaces can accommodate one battery pack. This reduces the space occupied by the two battery packs. Simultaneously, the battery frame also increases the strength and rigidity of the vehicle frame.

[0043] The following describes in detail the technical solutions of the vehicle frame assembly and electric vehicle provided in the embodiments of this application, with reference to the accompanying drawings.

[0044] Reference Figures 1 to 4 As shown in the embodiment of this application, the vehicle frame assembly includes a vehicle frame 100 and a battery frame 200.

[0045] The frame 100 includes two first longitudinal beams 110. The two first longitudinal beams 110 can be arranged parallel to each other. The frame 100 may also include a plurality of first crossbeams 120 connected between the two first longitudinal beams 110, and the extending direction of each first crossbeam 120 may be perpendicular to the extending direction of the first longitudinal beams 110. Optionally, both ends of the first crossbeams 120 can be fixed to the first longitudinal beams 110 by suitable methods such as welding or riveting; this is not a unique limitation.

[0046] The battery frame 200 is positioned below the two first longitudinal beams 110 and encloses the two first longitudinal beams 110 to form a double-layered receiving space. Each layer of the double-layered receiving space can accommodate a battery pack.

[0047] The battery frame 200 includes a first support frame 210 and a second support frame 220. The first support frame 210 is connected to two first longitudinal beams 110, and the first support frame 210 and the two first longitudinal beams 110 enclose an upper receiving space. The second support frame 220 is located below the first support frame 210 and connected to the first support frame 210, and the second support frame 220 and the first support frame 210 enclose a lower receiving space.

[0048] Schematic illustration: After the battery pack is installed in the upper receiving space, it can be fixed to the first support frame 210. The first support frame 210 can be located between two adjacent first crossbeams 120 of the frame 100 to prevent the first crossbeams 120 from interfering with the installation of the battery pack in the upper receiving space. The first support frame 210 is connected to the two first longitudinal beams 110 of the frame 100 respectively, so that the battery frame 200 can also improve the strength and rigidity of the frame 100 through the first support frame 210. Optionally, the first support frame 210 can be connected to the first longitudinal beams 110 by welding or fastening with fasteners or other suitable methods, which are not limited to this.

[0049] In one possible implementation, the second support frame 220 is located below the first support frame 210 and is spaced apart from it. The second support frame 220 and the first support frame 210 can be connected by other components. After the battery pack is placed in the lower receiving space, it can be fixed on the second support frame 220, which supports the battery pack in the lower receiving space. The height of the gap between the first support frame 210 and the second support frame 220 is not less than the thickness of the battery pack in the lower receiving space. In another possible implementation, the second support frame 220 can be directly connected to one side below the first support frame 210. Two second support frames 220 can be connected to opposite sides below the first support frame 210, and the battery pack in the lower receiving space can be suspended on the first support frame 210.

[0050] The vehicle frame assembly provided in this embodiment has upper and lower accommodating spaces that can respectively accommodate battery packs, allowing the two battery packs to be stacked on the vehicle frame 100. While ensuring the range of the electric vehicle, this reduces the space occupied by the two battery packs on the vehicle frame 100, facilitating the installation of other components on the chassis. The first support frame 210 of the battery frame 200 is connected to the two first longitudinal beams 110, further improving the strength and rigidity of the vehicle frame 100.

[0051] Furthermore, the vehicle frame assembly provided in this embodiment integrates the battery frame 200 with the vehicle frame 100, which can reduce redundant structures in the vehicle and achieve weight reduction.

[0052] In one embodiment, such as Figures 1-5 As shown, the first support frame 210 includes two second longitudinal beams 211 and at least two second crossbeams 212 disposed between the two second longitudinal beams 211. Schematic, the two second longitudinal beams 211 and the at least two second crossbeams 212 can define a rectangular frame structure. Each second crossbeam 212 can be connected to the two first longitudinal beams 110 by a suitable method such as welding or fastening. The specific number and position of the second crossbeams 212 can be set as needed and are not uniquely limited here.

[0053] Two first longitudinal beams 110 are connected to each other, and the two first longitudinal beams 110, two second longitudinal beams 211 and at least two second transverse beams 212 enclose and form the upper accommodating space.

[0054] The upper flange of each second longitudinal beam 211 is fixed to the lower flange of the corresponding first longitudinal beam 110. Each second longitudinal beam 211 can be connected to the first longitudinal beam 110 by a suitable method such as welding or fastening with fasteners. After the battery pack is installed in the upper receiving space, it can be connected to the second crossbeam 212 of the first support frame 210 by fasteners, thereby fixing the battery pack in the upper receiving space.

[0055] With the above configuration, the first support frame 210 can reliably support the battery pack in the upper storage space. At the same time, at least two second crossbeams 212 can ensure the strength and rigidity of the first support frame 210, thereby enabling the battery frame 200 to reliably improve the strength and rigidity of the vehicle frame 100.

[0056] In a specific embodiment, such as Figures 1-5 As shown, the battery frame 200 also includes multiple side plates 230, which are located on both sides of the first support frame 210 and the second support frame 220 respectively. Each side plate 230 is connected to the second longitudinal beam 211 and the second support frame 220 respectively. The first support frame 210, the second support frame 220 and the multiple side plates 230 enclose a lower accommodating space.

[0057] The second support frame 220 is positioned below and spaced apart from the first support frame 210. The second support frame 220 may also include two longitudinal beams and at least two crossbeams connecting the two longitudinal beams. After the battery pack is placed in the lower receiving space, it can be connected to the crossbeams of the second support frame 220 via fasteners, thereby supporting the battery pack in the lower receiving space via the second support frame 220.

[0058] Multiple side panels 230 can be arranged in pairs on opposite sides of the battery frame 200. Those skilled in the art can set the specific number of side panels 230 as needed, and no unique limitation is made here. After each side panel 230 is connected to the first support frame 210 and the second support frame 220 respectively, the first support frame 210 and the second support frame 220 can be fixed together.

[0059] The top of each side plate 230 extends beyond the second longitudinal beam 211 and connects to the first longitudinal beam 110. The multiple side plates 230 can be used to fix the first support frame 210 and the second support frame 220, and the multiple side plates 230 can also improve the reliability of the connection between the battery frame 200 and the vehicle frame 100.

[0060] In a specific embodiment, such as Figures 3-5 As shown, a support rod 240 is provided at the end of the battery frame 200, and the two ends of the support rod 240 are respectively connected to the first support frame 210 and the second support frame 220.

[0061] Optionally, the battery frame 200 is provided with support rods 240 at both ends. The top end of each support rod 240 is connected to the first support frame 210, and the bottom end of each support rod 240 is connected to the second support frame 220. The two ends of the support rods 240 can be connected to the first support frame 210 and the second support frame 220 respectively by fasteners or welding, etc., and no single limitation is made here.

[0062] This structure, with support rods 240 at the ends of the battery frame 200, improves the torsional resistance of the battery frame 200 and also protects the battery pack within the double-layered housing. Furthermore, the improved torsional resistance of the battery frame 200 further increases the strength and rigidity of the vehicle frame 100.

[0063] In one possible implementation, such as Figure 4 and Figure 5 As shown, at least one pair of support rods 240 are provided at both ends of the battery frame 200. The pairs of support rods 240 are arranged crosswise, and each support rod 240 is fastened to the first support frame 210 and the second support frame 220 by fasteners.

[0064] Schematic, each pair of support rods 240 forms an approximate "X" shape. In one possible implementation, the ends of the first support frame 210 and the second support frame 220 are respectively provided with multiple mounting seats, and the ends of the support rods 240 are connected to the corresponding mounting seats by fasteners. Those skilled in the art can set the number of pairs of support rods 240 at the ends of the battery frame 200 as needed, and no unique limitation is made here.

[0065] With the above configuration, the support rod 240 at the battery end can reliably improve the torsional resistance of the battery frame 200, thereby reliably increasing the strength and rigidity of the frame 100.

[0066] In one embodiment, such as Figure 3 As shown, the lower flange of each first longitudinal beam 110 is fixed to the top surface of the second longitudinal beam 211 by fasteners. Schematic, the first longitudinal beam 110 and the corresponding second longitudinal beam 211 are fixed by multiple fasteners, which are spaced apart along the extension direction of the second longitudinal beam 211. Each fastener passes through the second longitudinal beam 211 and locks onto the first longitudinal beam 110, thereby achieving the fixation between the first longitudinal beam 110 and the second longitudinal beam 211.

[0067] Each side panel 230 is fixed to the first longitudinal beam 110, the second longitudinal beam 211, and the second support frame 220 by fasteners. Schematic, the first longitudinal beam 110, the second longitudinal beam 211, and the second support frame 220 are fixed to the side panel 230 by multiple fasteners.

[0068] When it is necessary to remove the battery pack in the upper housing space, the fasteners between the second longitudinal beam 211 and the first longitudinal beam 110 can be removed, as can the fasteners between each side upright plate 230 and the first longitudinal beam 110. At this time, the battery frame 200 and the two battery packs can be removed from the vehicle frame 100. When it is necessary to remove the battery pack in the lower housing space, the fasteners between the second support frame 220 and each side upright plate 230 can be removed. When the battery frame 200 is provided with a support rod 240 at its end, the fasteners between the support rod 240 and the second support frame 220 can be removed. At this time, the second support frame 220 and the battery pack in the lower housing space can be removed from the vehicle frame 100.

[0069] In this embodiment, the battery pack in both the upper and lower accommodating spaces can be installed and removed from below the frame 100, improving the assembly efficiency and maintenance convenience of the frame assembly.

[0070] In one possible implementation, along the height direction of the side plate 230, the side plate 230 is provided with a plurality of fastening holes for fasteners to pass through. By setting the first support frame 210 and the corresponding fastening holes and fastening them with fasteners, the gap height between the first support frame 210 and the second support frame 220 can be set so that the gap height between the first support frame 210 and the second support frame 220 can match the thickness of the battery pack in the lower accommodating space.

[0071] In one embodiment, such as Figures 3-6As shown, along the length of the frame 100, the side panel 230 includes a protruding rib 231 and two connecting portions 232 located on opposite sides of the protruding rib 231. The protruding rib 231 protrudes away from the double-layer accommodating space and extends along the length of the side panel 230. Each connecting portion 232 is connected to the first longitudinal beam 110, the second longitudinal beam 211, and the second support frame 220, respectively.

[0072] Understandably, along the length of the frame 100, the protruding rib 231 is located in the middle of the side plate 230. The protruding rib 231 can be formed on the side plate 230 by stamping. By providing the protruding rib 231 on the side plate 230, the structural strength of the side plate 230 can be improved, making the side plate 230 less prone to deformation.

[0073] With the above settings, the side plate 230 is not easily deformed, ensuring the structural reliability of the battery frame 200 while also ensuring the reliability of the connection between the battery frame 200 and the vehicle frame 100.

[0074] In one embodiment, such as Figures 2-5 As shown, the first support frame 210 also includes several reinforcing beams 213, each of which is connected between two second longitudinal beams 211.

[0075] Schematic illustration: the end of the reinforcing beam 213 can be connected to the second longitudinal beam 211 by welding or fastening with fasteners. Understandably, the reinforcing beam 213 can enhance the structural strength of the first support frame 210, making the first support frame 210 less prone to deformation.

[0076] In this embodiment, by strengthening the structural strength of the first support frame 210 with the reinforcing beam 213, the strength and rigidity of the frame 100 can be further increased.

[0077] like Figure 2 , Figure 4 and Figure 5 As shown, to avoid excessive weight of the vehicle frame assembly, the battery frame 200 only has a reinforcing beam 213 on the first support frame 210.

[0078] In one possible implementation, such as Figures 3-5 As shown, a gap region 214 is defined between two adjacent second crossbeams 212, and only a portion of the gap region 214 is provided with reinforcing beams 213 arranged in a cross pattern.

[0079] For example, such as Figure 4As shown, the first support frame 210 may have three spaced regions 214, of which reinforcing beams 213 are provided only in the two spaced regions 214 located at the edges. This embodiment is merely exemplary, and those skilled in the art can provide reinforcing beams 213 in specific spaced regions 214 as needed. The reinforcing beams 213 are arranged in pairs in the corresponding spaced regions 214, and each pair of reinforcing beams 213 defines an approximate "X" shape.

[0080] The above-mentioned configuration reliably ensures the structural strength of the first support frame 210, thereby reliably increasing the strength and rigidity of the vehicle frame 100. Furthermore, the first support frame 210 only has reinforcing ribs in certain interval areas 214, which prevents the battery frame 200 from becoming excessively heavy.

[0081] This application also provides an electric vehicle, including a first battery pack 300, a second battery pack 400, and the aforementioned frame assembly. The first battery pack 300 is installed in the upper receiving space of the frame assembly, and the second battery pack 400 is installed in the lower receiving space of the frame assembly.

[0082] The electric vehicle can be an electric light truck or other electric vehicle. Optionally, the electric drive axle motor can be rear-mounted, and a longer battery pack can be placed in the middle of the frame assembly.

[0083] The electric vehicle provided in this application, by adopting the aforementioned frame assembly, ensures the range of the electric vehicle while stacking the first battery pack 300 and the second battery pack 400 on the frame 100.

[0084] It can reduce the space occupied by the first battery pack 300 and the second battery pack 400 in the vehicle frame 100, and can reduce the redundant structure of the electric vehicle, thus achieving weight reduction.

[0085] like Figure 1 and Figure 7 As shown, in one possible implementation, the top of the first battery pack 300 extends beyond the upper wing surface of the frame 100 of the frame assembly.

[0086] Indicatively, the top of the first battery pack 300 extends no more than 80mm beyond the upper wing surface of the frame 100 to avoid the first battery pack 300 interfering with the installation of other components on the chassis.

[0087] The above configuration allows for the placement of a battery pack with a larger capacity, while also meeting the vehicle's overall passability requirements and ensuring that the second battery pack meets the 400mm ground clearance requirement.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A frame assembly characterized by, Including the chassis and battery frame; The frame includes two first longitudinal beams; The battery frame is positioned below the two first longitudinal beams and encloses the two first longitudinal beams to form a double-layered housing space. The battery frame includes a first support frame and a second support frame. The first support frame is connected to two first longitudinal beams, and the first support frame and the two first longitudinal beams enclose an upper accommodating space. The second support frame is disposed below the first support frame and connected to the first support frame, and the second support frame and the first support frame enclose a lower receiving space.

2. The frame assembly of claim 1, wherein, The first support frame includes two second longitudinal beams and at least two second crossbeams disposed between the two second longitudinal beams. The two first longitudinal beams are respectively connected to the two first longitudinal beams. The two first longitudinal beams, the two second longitudinal beams, and the at least two second crossbeams enclose the upper accommodating space.

3. The frame assembly of claim 2, wherein, The battery frame also includes multiple side panels, which are located on both sides of the first support frame and the second support frame, and each side panel is connected to the second longitudinal beam and the second support frame. The first support frame, the second support frame, and the multiple side panels enclose the lower accommodating space. The top of each of the side panels extends beyond the second longitudinal beam and is connected to the first longitudinal beam.

4. The frame assembly of claim 1, wherein, The battery frame is provided with a support rod at its end, and the two ends of the support rod are respectively connected to the first support frame and the second support frame.

5. The frame assembly of claim 4, wherein, At least one pair of support rods are provided at each end of the battery frame, and the pairs of support rods are arranged crosswise. Each support rod is fastened to the first support frame and the second support frame by fasteners.

6. The frame assembly of claim 3, wherein, The lower flange of each of the first longitudinal beams is fixed to the top surface of the second longitudinal beam by fasteners; Each of the side panels is fixed to the first longitudinal beam, the second longitudinal beam, and the second support frame by fasteners.

7. The frame assembly of claim 3, wherein, Along the length of the frame, the side plate includes a protruding rib and two connecting portions located on opposite sides of the protruding rib. The protruding rib protrudes away from the double-layer accommodating space and extends along the length of the side plate. Each of the connecting portions is connected to the first longitudinal beam, the second longitudinal beam, and the second support frame, respectively.

8. The frame assembly of claim 2, wherein, The first support frame also includes several reinforcing beams, each of which is connected between two second longitudinal beams.

9. The frame assembly of claim 8, wherein, A gap area is defined between two adjacent second crossbeams, and the reinforcing beams are arranged in a cross pattern only in part of the gap area.

10. An electric vehicle characterized by comprising: Includes a first battery pack, a second battery pack, and a frame assembly as described in any one of claims 1-9; The first battery pack is installed in the upper receiving space of the vehicle frame assembly; The second battery pack is installed in the lower housing space of the vehicle frame assembly.

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