Frame assembly and vehicle

Abstract

The utility model discloses a frame assembly and a vehicle, the frame assembly comprises: a frame, the frame comprises longitudinally spaced cross beams and transversely spaced longitudinal beams, the cross beams are connected between the longitudinal beams, and the middle parts of the cross beams and the longitudinal beams jointly form a closed battery frame; the top cover is connected to the upper side of the battery frame; the battery is mounted on the battery frame; and the auxiliary frame is mounted below the front part of the longitudinal beam. Therefore, by arranging the frame assembly, the battery frame can be integrated on the frame, so that the battery arrangement space is increased, the auxiliary frame and the frame can form a double-force-transmission-channel structure, the anti-collision energy absorption capacity of the front end of the frame assembly is improved, and the structural protection effect on the battery is improved; and the cruising ability and the battery safety of the whole vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a chassis assembly and a vehicle. Background Technology

[0002] In related technologies, current battery packs are generally installed at the bottom of the vehicle body. The placement of battery packs on a vehicle is limited by the surrounding body, frame, and ground clearance. In order to meet the structural strength requirements for protecting itself within a limited space while increasing battery capacity, the problem is how to reduce the risk of frame deformation after a collision under the premise of integrating the frame and battery pack structure design. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a vehicle frame assembly that integrates the battery frame onto the vehicle frame, thereby increasing the battery placement space. It also enables the subframe and the vehicle frame to form a dual force transmission channel structure, thereby improving the collision resistance and energy absorption capacity of the front end of the vehicle frame assembly and enhancing the structural protection effect on the battery.

[0004] This utility model further proposes a vehicle.

[0005] According to a first aspect of the present invention, a vehicle frame assembly includes: a frame, the frame including longitudinally spaced crossbeams and laterally spaced longitudinal beams, the crossbeams being connected between the longitudinal beams, and the middle portions of the crossbeams and the longitudinal beams jointly forming a closed battery frame; a top cover, the top cover being connected to the upper side of the battery frame; a battery, the battery being mounted on the battery frame; and a subframe, the subframe being mounted below the front portion of the longitudinal beams.

[0006] Therefore, by setting up this frame assembly, the battery frame can be integrated into the frame, thereby increasing the battery placement space. It also allows the subframe and the frame to form a dual force transmission channel structure, thereby improving the collision resistance and energy absorption capacity of the front end of the frame assembly, enhancing the structural protection of the battery, and ultimately improving the vehicle's range and battery safety.

[0007] In some examples of this utility model, the longitudinal beam includes: a front straight beam extending in the front-rear direction, with the subframe mounted below the front straight beam; a rear straight beam disposed behind the front straight beam; a middle straight beam disposed between the front and rear straight beams, wherein the lateral spacing between the middle straight beams is greater than the lateral spacing between the front straight beams and the lateral spacing between the middle straight beams is greater than the lateral spacing between the rear straight beams in the left-right direction; a front inclined beam bent and connected between the front and middle straight beams; and a rear inclined beam bent and connected between the middle and rear straight beams; wherein the front crossbeam is connected between the front inclined beams, and the rear crossbeam is connected between the rear inclined beams.

[0008] In some examples of this utility model, the frame assembly further includes: at least one reinforcing diagonal beam, which extends obliquely and connects between the crossbeam and the longitudinal beam; wherein, along the front-rear direction, at least one of the reinforcing diagonal beams and the crossbeam are respectively connected to both sides of the connection between the front straight beam and the front diagonal beam.

[0009] In some examples of this utility model, the battery includes: a tray connected to the lower side of the battery frame; and a battery cell mounted on the upper side of the tray; wherein the top cover, the battery frame, and the tray together enclose a cavity for receiving the battery cell.

[0010] In some examples of this utility model, the frame assembly further includes: a reinforcing crossbeam extending laterally, the reinforcing crossbeam being disposed within the receiving cavity and connected between the longitudinal beams; and a reinforcing longitudinal beam extending longitudinally, the reinforcing longitudinal beam being disposed within the receiving cavity and connected between the crossbeam and the reinforcing crossbeam on the side near the reinforcing crossbeam.

[0011] In some examples of this utility model, the battery cell is arranged in multiple layers along the vertical direction, the multiple layers of battery cell including a first layer of battery cell and a second layer of battery cell, the first layer of battery cell being located above the second layer of battery cell, and the length of the first layer of battery cell being less than the length of the second layer of battery cell along the front-back direction; wherein, the first layer of battery cell, the second layer of battery cell and the battery frame together form a clearance space, and the reinforcing crossbeam and the reinforcing longitudinal beam are located within the clearance space.

[0012] In some examples of this utility model, the frame assembly further includes: a reinforcing diagonal beam that extends obliquely in the front-rear direction, one end of the reinforcing diagonal beam being connected to the crossbeam and the other end being connected to the longitudinal beam in a direction away from the battery cell; wherein the connection between the reinforcing diagonal beam and the crossbeam corresponds to the connection between the reinforcing longitudinal beam and the crossbeam in the front-rear position of the crossbeam.

[0013] In some examples of this utility model, at least one edge on the outer periphery of the tray has an upward protrusion, and the lower side of the battery frame has an upward recess, with the protrusion and the recess engaging in a limiting fit.

[0014] In some examples of this utility model, at least one of the crossbeam and the longitudinal beam is a hollow beam with an inner cavity, and the hollow beam is provided with a through hole communicating with the inner cavity; the frame assembly further includes: a sealing assembly disposed on the hollow beam and corresponding to the through hole to seal the inner cavity.

[0015] In some examples of this utility model, the sealing assembly includes: a sealing element, which is attached to the wall of the hollow beam and arranged around the perforation; and a fastener, which passes through the sealing element and the perforation.

[0016] In some examples of this utility model, the fastener includes: a nut located in the inner cavity and corresponding to the through hole; and a bolt that passes through the seal and the through hole and is threadedly engaged with the nut.

[0017] In some examples of this utility model, the hollow beam is provided with a recessed groove facing the inner cavity, the through hole is provided at the bottom of the recessed groove, and the fastener located in the recessed groove does not protrude from the recessed groove along its length direction; or the hollow beam is provided with a flat plate area, and the flat plate area is provided with the through hole.

[0018] In some examples of this utility model, the perforation is provided on the inner side wall of the hollow beam, and the outer side wall of the hollow beam is provided with a tool through hole for passing through the fastening tool and the nut. The tool through hole corresponds to the perforation in the inward and outward directions.

[0019] In some examples of this utility model, the sealing assembly is located within the inner cavity, and the sealing assembly includes: a mating member, which is located within the inner cavity and has a mounting hole corresponding to the through hole; a sealing member, which is attached to the mating member and arranged around the mounting hole; and a fastener, which passes through the sealing member and is installed in the mounting hole.

[0020] In some examples of this utility model, the mounting hole is formed with an internal thread, the fastener is a bolt, and the bolt engages with the internal thread.

[0021] In some examples of this utility model, the mating member forms a mounting cavity communicating with the through hole, and the fastener located in the mounting cavity does not protrude from the mounting cavity along its length direction; or the edge of the mating member is arranged around the through hole and welded to the side wall of the hollow beam.

[0022] In some examples of this utility model, the subframe includes: longitudinally spaced subframe crossbeams; and laterally spaced subframe longitudinal beams, wherein the subframe crossbeams are connected between the subframe longitudinal beams, and the subframe longitudinal beams are installed below the front part of the longitudinal beams; wherein the foremost subframe crossbeam is located below the front end of the longitudinal beam.

[0023] In some examples of this utility model, the subframe further includes: a mounting bracket, the mounting bracket being connected to the subframe longitudinal beam and extending laterally to the upper side relative to the subframe longitudinal beam, the mounting bracket being mounted below the front part of the longitudinal beam; and / or the rear end of the subframe longitudinal beam is provided with a mounting section bent laterally outward, the mounting section being mounted below the front part of the longitudinal beam.

[0024] In some examples of this utility model, the frame assembly further includes: a front suspension mounted on the subframe; and / or a steering gear mounted on the subframe; and / or a front final drive mounted on the subframe.

[0025] The vehicle according to the second aspect of this utility model includes: the aforementioned frame assembly.

[0026] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a top view of the frame assembly according to an embodiment of the present utility model;

[0029] Figure 2 This is a side view of the frame assembly according to an embodiment of the present utility model;

[0030] Figure 3 This is an exploded view of the vehicle frame assembly according to an embodiment of the present utility model;

[0031] Figure 4 This is a structural schematic diagram of the vehicle frame assembly according to an embodiment of the present utility model;

[0032] Figure 5 This is a top view of a battery according to an embodiment of the present utility model;

[0033] Figure 6 This is a schematic diagram of the battery structure according to an embodiment of the present utility model;

[0034] Figure 7 This is a side view of a battery according to an embodiment of the present utility model;

[0035] Figure 8 This is a partial structural schematic diagram of a battery according to an embodiment of the present utility model.

[0036] Figure 9 This is a structural schematic diagram of a hollow beam according to an embodiment of the present utility model;

[0037] Figure 10 This is a partial structural schematic diagram of the hollow beam and sealing assembly according to an embodiment of the present utility model;

[0038] Figure 11 This is a structural schematic diagram of the hollow beam from another angle according to an embodiment of the present utility model;

[0039] Figure 12 This is an exploded view of the hollow beam and sealing assembly according to an embodiment of the present utility model;

[0040] Figure 13 This is a front view of the hollow beam and sealing assembly according to an embodiment of the present utility model;

[0041] Figure 14 yes Figure 13 A cross-sectional view along the AA direction;

[0042] Figure 15 yes Figure 13 Cross-sectional view along the BB direction;

[0043] Figure 16 This is a top view of the subframe according to an embodiment of the present utility model;

[0044] Figure 17 This is a structural schematic diagram of the subframe according to an embodiment of the present utility model;

[0045] Figure 18 This is a schematic diagram of the subframe, front suspension, steering gear, and front final drive according to an embodiment of the present utility model.

[0046] Figure label:

[0047] 100. Chassis assembly;

[0048] 1. Frame; 11. Crossbeam; 12. Longitudinal beam; 121. Front straight beam; 122. Rear straight beam; 123. Middle straight beam; 124. Front diagonal beam; 125. Rear diagonal beam; 13. Battery frame; 131. Recess; 14. Inner cavity; 15. Perforation; 16. Sink; 17. Flat plate area; 18. Tool through hole; 19. Hollow beam;

[0049] 2. Sealing assembly; 21. Seal; 22. Fastener; 221. Nut; 222. Bolt; 23. Mating part; 231. Mounting cavity; 232. Connecting part; 233. Main body;

[0050] 3. Battery; 31. Battery cell; 32. Tray; 321. Protrusion; 322. Interface hole; 33. Receiving cavity; 34. Clearance space;

[0051] 4. Reinforce the diagonal beams; 5. Reinforce the horizontal beams; 6. Reinforce the longitudinal beams; 7. Top cover;

[0052] 8. Subframe; 81. Subframe crossbeam; 82. Subframe longitudinal beam; 821. Mounting section; 83. Mounting bracket;

[0053] 9. Front suspension; 91. Steering gear; 92. Front final drive. Detailed Implementation

[0054] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0055] The following is for reference. Figures 1-18 The vehicle frame assembly 100 according to an embodiment of the present utility model can integrate the battery frame 13 onto the vehicle frame 1, thereby increasing the space for the battery 3. It can also make the subframe 8 and the vehicle frame 1 form a dual force transmission channel structure, thereby improving the anti-collision energy absorption capacity of the front end of the vehicle frame assembly 100 and enhancing the structural protection effect of the battery 3.

[0056] Combination Figures 1-18As shown, the vehicle frame assembly 100 according to the first aspect of this utility model includes a frame 1, a roof 7, a battery 3, and a subframe 8. The frame 1 is the main supporting structure of the vehicle, providing support for components such as the battery 3, suspension system, and transmission system. It also absorbs impact energy during a collision, protecting the passenger compartment and serving as a mounting base for related components. The battery 3 stores electrical energy from a charging power source and serves as the vehicle's driving energy. The subframe 8 directly distributes the load from the suspension system and power transmission system to the frame 1, reducing the impact of the load on the vehicle body and improving the structural rigidity of the frame assembly 100 in specific areas (such as the areas where the suspension and power transmission systems are located). Furthermore, when the vehicle encounters uneven road surfaces or a collision, it absorbs some of the impact energy, mitigating the direct impact on the frame 1 and protecting it from damage, thereby reducing the impact on the passenger compartment and improving vehicle safety.

[0057] Specifically, the frame 1 includes longitudinally spaced crossbeams 11 and laterally spaced longitudinal beams 12. The crossbeams 11 are connected between the longitudinal beams 12. The middle of the crossbeams 11 and the longitudinal beams 12 together form a closed battery frame 13. The top cover 7 is connected to the upper side of the battery frame 13. The battery 3 is installed on the battery frame 13. The subframe 8 is installed below the front of the longitudinal beams 12.

[0058] Specifically, the crossbeams 11 are spaced apart in the longitudinal direction (i.e., the front-to-back direction of the vehicle), and the longitudinal beams 12 are spaced apart in the transverse direction (i.e., the left-to-right direction of the vehicle). The crossbeams 11 and longitudinal beams 12 are connected to each other and together form a closed battery frame 13. This allows the crossbeams 11 and longitudinal beams 12 to form a closed force transmission path, which helps to distribute the loads they receive and thus effectively improves the structural reliability of the frame 1. On the other hand, the battery frame 13 can be integrated into the frame 1, so that the battery frame 13 can replace the traditional battery side frame (the battery frame and the frame are independent structures), thereby increasing the placement space of the battery 3, increasing the battery capacity of the battery 3, and thus improving the vehicle's range.

[0059] Furthermore, the subframe 8 and the longitudinal beam 12 are connected to each other as a whole. The subframe 8 can provide a centralized and stable mounting platform for related structural components (such as shock absorbers, springs, control arms, etc. in the suspension system), and can also significantly improve the bending and torsional stiffness of the front area of ​​the frame assembly 100, reduce the deformation of the body under stress, reduce the risk of roll, and improve the overall structural stability of the body. It can also be connected to the frame 1 through rubber bushings or other flexible connectors. These connectors can effectively absorb vibrations and impacts from the road surface, reduce noise and vibration transmitted into the vehicle, and improve the vehicle's NVH performance.

[0060] The subframe 8 is connected to the lower front of the longitudinal beam 12. When the vehicle is involved in a collision, the subframe 8 can form a dual force transmission channel structure with the frame 1, thereby effectively dispersing the impact force on the vehicle body, increasing the anti-collision energy absorption capacity of the front section of the longitudinal beam 12, and thus improving the structural protection of the battery 3 inside the battery frame 13 and improving the safety of the battery 3.

[0061] Therefore, by setting up the frame assembly 100, the battery frame 13 can be integrated into the frame 1, thereby increasing the space for battery 3. It also allows the subframe 8 and the frame 1 to form a dual force transmission channel structure, thereby improving the collision resistance and energy absorption capacity of the front end of the frame assembly 100, enhancing the structural protection effect of the battery 3, and thus improving the overall vehicle range and battery 3 safety.

[0062] According to some optional embodiments of the present invention, combined with Figures 1-4 As shown, the longitudinal beam 12 includes a front straight beam 121, a rear straight beam 122, a middle straight beam 123, a front inclined beam 124, and a rear inclined beam 125. The front straight beam 121 extends in the front-rear direction, and the subframe 8 is installed below the front straight beam 121. The rear straight beam 122 is located behind the front straight beam 121, and the middle straight beam 123 is located between the front straight beam 121 and the rear straight beam 122.

[0063] Among them, the front straight beam 121, the front inclined beam 124, the middle straight beam 123, the rear inclined beam 125 and the rear straight beam 122 are connected in sequence from front to back. The front inclined beam 124 and the rear inclined beam 125 can change the extension direction of the front straight beam 121 and the middle straight beam 123 respectively according to the arrangement requirements of the longitudinal beam 12.

[0064] Furthermore, combined Figure 4 As shown, in the left-right direction, the lateral spacing between the middle straight beams 123 is greater than the lateral spacing between the front straight beams 121, and the lateral spacing between the middle straight beams 123 is greater than the lateral spacing between the rear straight beams 122. The front inclined beam 124 is bent and connected between the front straight beams 121 and the middle straight beams 123, and the rear inclined beam 125 is bent and connected between the middle straight beams 123 and the rear straight beams 122. The front crossbeam 11 is connected between the front inclined beams 124, and the rear crossbeam 11 is connected between the rear inclined beams 125.

[0065] As described above, without interfering with the use of the front straight beam 121 and the rear straight beam 122 to connect other components (such as the suspension system or the transmission system), the housing 33 can fully occupy the inner space of the front inclined beam 124 and the rear inclined beam 125, thereby maximizing the space for the battery 3 and increasing the battery capacity and the vehicle's range.

[0066] Specifically, in combination Figure 4As shown, the frame assembly 100 also includes at least one reinforcing diagonal beam 4, which extends obliquely and connects between the crossbeam 11 and the longitudinal beam 12. For example, the reinforcing diagonal beam 4 can connect between the front crossbeam 11 and the front straight beam 121, or between the rear crossbeam 11 and the rear straight beam 122.

[0067] It is understandable that the reinforcing diagonal beam 4 extends obliquely and connects between the crossbeam 11 and the longitudinal beam 12. The three together form a closed force-bearing structure similar to a triangle or ring. This increases the force transmission path between the crossbeam 11 and the longitudinal beam 12, thereby effectively improving the force uniformity and structural stability of the longitudinal beam 12 and the battery frame 13. Moreover, the reinforcing diagonal beam 4 can also increase the weight and spatial modes of the frame 1, thereby improving the structural strength and bending and torsional stiffness of the longitudinal beam 12 and the battery frame 13, and thus improving the structural reliability of the battery frame 13.

[0068] In this configuration, at least one reinforcing diagonal beam 4 and a crossbeam 11 are respectively connected to both sides of the connection between the front straight beam 121 and the front diagonal beam 124 along the front-rear direction. This can effectively disperse the stress at the connection between the front straight beam 121 and the front diagonal beam 124, thereby reducing the risk of stress concentration at the connection between the front straight beam 121 and the front diagonal beam 124 and improving the structural stability of the front diagonal beam 124.

[0069] According to some optional embodiments of the present invention, combined with Figure 1 , Figure 3 , Figures 5-7 As shown, the battery 3 includes a tray 32 and a cell 31. The tray 32 is connected to the lower side of the battery frame 13, and the cell 31 is installed on the upper side of the tray 32. The top cover 7, the battery frame 13 and the tray 32 together form a cavity 33 for receiving the cell 31.

[0070] The top cover 7 and the tray 32 are respectively arranged in the vertical direction. The top cover 7 and the tray 32 are connected to the upper and lower sides of the battery 3 frame, respectively. The top cover 7, the battery frame 13 and the tray 32 together define the cavity 33 of the battery cell 31, which can form a comprehensive protection effect for the battery cell 31, thereby ensuring the sealing and safety of the battery 3.

[0071] Furthermore, since the top cover 7 and the tray 32 are connected to the battery frame 13, the weight and spatial mode of the frame 1 can be increased, thereby improving the structural strength and bending and torsional stiffness of the frame 1, and thus improving the structural reliability and handling stability of the whole vehicle.

[0072] Optionally, the top cover 7 and the battery frame 13 can be connected and sealed by welding or screwing. When screwing, sealant or sealant strip can be used as an auxiliary material, and when welding, sealant can be used as an auxiliary material.

[0073] Moreover, compared to the traditional vehicle frame assembly solution (where the battery and frame are independent structures), in this case, the frame 1, tray 32, and top cover 7 work together to provide a sealed frame for the battery cell 31. This arrangement eliminates the traditional battery 3 frame, which can effectively increase the space for the battery cell 31, thereby increasing the battery capacity and thus improving the vehicle's range.

[0074] In summary, by setting up the frame assembly 100, the battery frame 13 can be integrated into the frame 1, thereby increasing the space for battery 3 placement and improving the bending and torsional stiffness of the frame 1, which in turn improves the battery capacity and handling stability of the whole vehicle.

[0075] According to some optional embodiments of the present invention, combined with Figure 4 As shown, the frame assembly 100 also includes a reinforcing crossbeam 5 and a reinforcing longitudinal beam 6. The reinforcing crossbeam 5 extends laterally and is disposed within the receiving cavity 33. The reinforcing crossbeam 5 is connected between the longitudinal beams 12. The reinforcing longitudinal beam 6 extends longitudinally and is disposed within the receiving cavity 33. The reinforcing longitudinal beam 6 is connected between the crossbeam 11 and the reinforcing crossbeam 5 on the side near the reinforcing crossbeam 5.

[0076] The reinforcing crossbeam 5 is longitudinally connected between the longitudinal beams 12, which increases the longitudinal force transmission channel between the longitudinal beams 12 to achieve the effect of distributing the load. It also increases the weight and spatial mode of the battery frame 13, thereby improving the stress uniformity and structural reliability of the battery frame 13. The reinforcing longitudinal beam 6 is longitudinally connected between the crossbeam 11 and the reinforcing crossbeam 5 on the side close to the reinforcing crossbeam 5. This establishes a force transmission channel between the crossbeam 11 and the reinforcing crossbeam 5 in the transverse direction to achieve the effect of distributing the load. It also increases the weight and spatial mode of the battery frame 13, thereby improving the stress uniformity and structural reliability of the battery frame 13.

[0077] Furthermore, as described above, when the vehicle is subjected to a lateral impact collision, the longitudinal beam 12 can directly transfer the force it receives to the reinforcing crossbeam 5 during the collision, or it can transfer the force to the crossbeam 11 through the reinforcing diagonal beam 4, thereby dispersing the impact force received by the longitudinal beam 12, effectively avoiding the problem of bending deformation and insufficient energy absorption of the longitudinal beam 12 during the collision, thus protecting the battery 3 from being squeezed and damaged, and improving the safety of the battery 3.

[0078] Specifically, in combination Figures 5-7As shown, the battery cell 31 has multiple layers arranged in the vertical direction. The multi-layer battery cell 31 includes a first layer battery cell 31 and a second layer battery cell 31. The first layer battery cell 31 is located above the second layer battery cell 31. In the front-back direction, the length of the first layer battery cell 31 is less than the length of the second layer battery cell 31. The first layer battery cell 31, the second layer battery cell 31 and the battery frame 13 together form a clearance space 34. The reinforcing crossbeam 5 and the reinforcing longitudinal beam 6 are located within the clearance space 34.

[0079] As described above, the reinforcing crossbeam 5 and the reinforcing longitudinal beam 6 are arranged within the clearance space 34. This allows the reinforcing crossbeam 5 and the reinforcing longitudinal beam 6 to structurally reinforce the battery frame 13 while avoiding the risk of interference and collision between the reinforcing crossbeam 5 and the reinforcing longitudinal beam 6 within the receiving cavity 33 and the battery cell 31, thereby improving the rationality of the arrangement.

[0080] Furthermore, combined Figures 4-7 As shown, the frame assembly 100 also includes a reinforcing beam 4, which extends obliquely in the front-rear direction. One end of the reinforcing beam 4 is connected to the crossbeam 11, and the other end of the reinforcing beam 4 is connected to the longitudinal beam 12 in a direction away from the battery cell 31.

[0081] For example, the reinforcing diagonal beam 4 connects the front crossbeam 11 and longitudinal beam 12, which can increase the weight and spatial mode of the crossbeam 11 and longitudinal beam 12, thereby improving the structural strength of the frame 1 and the battery frame 13. It can also effectively reduce the risk of the battery 3 being crushed and damaged due to insufficient collision energy absorption at the front of the frame 1, thereby improving the safety of the battery 3 when the vehicle is involved in a collision.

[0082] The connection between the reinforcing diagonal beam 4 and the crossbeam 11 corresponds to the connection between the reinforcing longitudinal beam 6 and the crossbeam 11 in the front and rear positions of the crossbeam 11. This allows the reinforcing diagonal beam 4, the crossbeam 11 and the reinforcing longitudinal beam 6 to form a continuous force transmission path, thereby enabling them to distribute the load more smoothly and thus improve the collision resistance of the frame 1 and the safety of the battery 3.

[0083] According to some optional embodiments of the present invention, combined with Figures 6-8 As shown, at least one edge of the outer periphery of the tray 32 has an upward protrusion 321, and the lower side of the battery frame 13 has an upward recess 131, with the protrusion 321 and the recess 131 engaging in a limiting fit.

[0084] The protrusion 321 on the outer periphery of the tray 32 and the recess 131 of the battery frame 13 mutually limit and cooperate with each other. This can increase the contact area between the two, thereby improving the tightness of the connection between them. On the other hand, it can also form a limiting effect on each other, avoiding the risk of misalignment between the two in the horizontal or vertical direction, thereby improving the assembly stability and accuracy between them.

[0085] Specifically, in combination Figures 6-8 As shown, the protrusion 321 is constructed from bottom to top along its length in a shape that is narrow at both ends and wide in the middle. This arrangement allows the material to be concentrated in the more critical central position (the main stress area) while reducing the amount of material used at both ends, thereby balancing the structural strength and lightweight design effect of the protrusion 321.

[0086] The protrusion 321 has an interface hole 322 in the middle. This allows for a larger arrangement space for the interface hole 322 by utilizing the larger width of the middle part of the protrusion 321. This facilitates the connection of related pipelines with the battery cell 31 and related components inside the battery frame 13 through the interface hole 322.

[0087] According to some optional embodiments of this utility model, the outer peripheral edge of the tray 32 is provided with a vertically penetrating mounting hole, and a fastener passes through the mounting hole and connects the tray 32 and the vehicle frame 1 as a whole with the battery frame 13. For example, the fastener can be a bolt 222, but is not limited thereto.

[0088] In this embodiment, fastener 22 connects tray 32 and battery frame 13 into a single unit, thereby increasing their weight and spatial modality, thus improving their structural strength and bending / torsional stiffness, and ultimately enhancing the protection of battery cell 31. Furthermore, the screw connection between tray 32 and battery frame 13, compared to other connection methods, facilitates the disassembly and maintenance of battery 3 and battery frame 13, improving ease of assembly and disassembly and reducing subsequent maintenance costs.

[0089] According to some optional embodiments of the present invention, combined with Figure 4 , Figure 9 , Figures 11-15 As shown, at least one of the crossbeam 11 and the longitudinal beam 12 is a hollow beam 19 having an inner cavity 14, and the hollow beam 19 is provided with a through hole 15 communicating with the inner cavity 14; the frame assembly 100 also includes a sealing assembly 2, which is disposed on the hollow beam 19 and corresponds to the through hole 15 to seal the inner cavity 14.

[0090] Specifically, the crossbeams 11 are spaced apart in the longitudinal direction (i.e., the front-to-back direction of the vehicle), and the longitudinal beams 12 are spaced apart in the transverse direction (i.e., the left-to-right direction of the vehicle). The crossbeams 11 and longitudinal beams 12 are connected to each other and together form a closed battery frame 13. This allows the crossbeams 11 and longitudinal beams 12 to form a closed force transmission path, which helps to distribute the loads they receive and thus effectively improves the structural reliability of the frame 1. On the other hand, the battery frame 13 can be integrated into the frame 1, so that the battery frame 13 can replace the traditional battery 3 side frame, thereby increasing the placement space of the battery 3 and increasing the battery capacity.

[0091] Furthermore, combined Figure 9 , Figures 11-15 As shown, the hollow beam 19 is provided with a through hole 15 that communicates with its inner cavity 14. The sealing assembly 2 can seal the inner cavity 14 at the through hole 15 (that is, the inner cavity 14 is connected to the outside due to the opening of the through hole 15), thereby ensuring the sealing of the battery frame 13.

[0092] Specifically, when the perforation 15 on the hollow beam 19 is not sealed with the sealing component 2, the frame 1 can carry out normal production processes through the perforation 15 (such as the perforation 15 can serve as an electrophoresis lifting hole, welding positioning hole, etc.). After the frame 1 completes the specified production process, the operator can seal the inner cavity 14 at the perforation 15 through the sealing component 2, thereby ensuring the sealing of the battery frame 13 and thus ensuring the safety of the battery 3.

[0093] The above arrangement allows for flexible sealing of the perforations 15 on the hollow beam 19 by the sealing component 2. This ensures that the manufacturing process of the frame 1 through the perforations 15 is not interfered with, while also guaranteeing the sealing of the battery frame 13, thereby improving the reliability of the frame assembly 100.

[0094] Specifically, in combination Figure 9 , Figures 11-15 As shown, the sealing assembly 2 includes a seal 21 and a fastener 22. The seal 21 is attached to the wall of the hollow beam 19 and is arranged around the perforation 15. The fastener 22 passes through the seal 21 and the perforation 15.

[0095] As described above, the fastener 22 can cover the perforation 15, and the fastener 22 can also press the seal 21 against the wall of the hollow beam 19, so that the two can work together to achieve a tight connection with the perforation 15, thereby achieving a sealing effect on the inner cavity 14 of the perforation 15 and ensuring the sealing performance of the battery frame 13.

[0096] Furthermore, combined Figure 9 , Figure 10, Figure 12 , Figures 14-15 As shown, the fastener 22 includes a nut 221 and a bolt 222. The nut 221 is located inside the inner cavity 14 and corresponds to the through hole 15. The bolt 222 passes through the seal 21 and the through hole 15 and then engages with the nut 221 through a thread.

[0097] It is understandable that the bolt 222 passes through the seal 21, the through hole 15 and the nut 221 in sequence to connect and fix the fastener 22, the seal 21, the hollow beam 19 and the nut 221 into a solid whole, thereby improving the positional stability of the seal 21 and ensuring the sealing effect of the hollow beam 19.

[0098] Among them, the nut 221 and the bolt 222 are connected by threads. Compared with other connection methods, this connection method allows operators to quickly disassemble and replace the parts using simple tools (such as wrenches, screwdrivers, etc.). Moreover, the structure is simple, the cost is low, and it can be reused multiple times, thereby improving its ease of disassembly and assembly and its practicality.

[0099] In addition, bolt 222 can achieve a good sealing effect by cooperating with seal 21 (such as a gasket) to prevent liquid or gas leakage, thereby ensuring the sealing performance of hollow beam 19.

[0100] Specifically, in combination Figure 9 , Figure 12 and Figure 14 As shown, the hollow beam 19 is provided with a recessed groove 16 facing the inner cavity 14, and a through hole 15 is provided at the bottom of the recessed groove 16. The fastener 22 located in the recessed groove 16 does not protrude from the recessed groove 16 along its length direction.

[0101] Understandably, the hollow beam 19 has a recessed groove 16 on the side facing the inner cavity 14. The groove 16 can increase the spatial modes of the hollow beam 19, thereby enhancing its bending and torsional stiffness. Since the groove 16 is lower than the inner surface of the hollow beam 19, the through hole 15 is opened at the bottom of the groove 16. This allows the head of the fastener 22 near the through hole 15 to fall into the groove 16 without protruding from it. This reduces the space occupied by the fastener 22 within the battery frame 13, thereby improving the effective use of space for the battery 3 within the battery frame 13 and enhancing the rationality of the arrangement.

[0102] Optionally, combined Figure 9 , Figure 12 and Figure 14As shown, the hollow beam 19 is provided with a flat plate area 17, and the flat plate area 17 is provided with a through hole 15. This arrangement, since the surface of the flat plate area 17 is flat, can increase the contact area between the seal 21 and the hollow beam 19, and also increase the force transmission area between the fastener 22 and the hollow beam 19, thereby ensuring the tightness of the connection and the uniformity of the force between the fastener 22, the seal 21 and the hollow beam 19, and thus ensuring the sealing effect of the sealing assembly 2.

[0103] Furthermore, combined Figure 11 and Figure 12 As shown, the through hole 15 is provided on the inner side wall of the hollow beam 19, and the outer side wall of the hollow beam 19 is provided with a tool through hole 18 for passing through the fastening tool and nut 221. The tool through hole 18 and the through hole 15 correspond to each other in the inner and outer directions.

[0104] It is understandable that the inner and outer walls of the hollow beam 19 are respectively provided with corresponding through holes 15 and tool through holes 18. The tool through holes 18 facilitate the operator to perform disassembly and assembly work in the inner cavity 14 of the hollow beam 19 from the outside of the hollow beam 19 (for example, the operator can insert a tool into the inner cavity 14 of the hollow beam 19 through the tool through holes 18 to tighten the nut 221 and the bolt 222), thereby improving the ease of disassembly and assembly of the sealing assembly 2.

[0105] Specifically, in combination Figure 9 , Figure 12 and Figure 15 As shown, the sealing assembly 2 is located in the inner cavity 14. The sealing assembly 2 includes a mating part 23, a sealing part 21, and a fastener 22. The mating part 23 is located in the inner cavity 14 and has a mounting hole corresponding to the through hole 15. The sealing part 21 is attached to the mating part 23 and is arranged around the mounting hole. The fastener 22 passes through the sealing part 21 and is installed in the mounting hole.

[0106] As described above, the arrangement can reduce the space occupied by the sealing component 2 on the outside of the inner cavity 14, thereby increasing the effective arrangement space of the battery 3 inside the battery frame 13. On the other hand, after the fastener 22 passes through the seal 21 and the mounting hole in sequence, it can connect the fastener 22, the seal 21 and the mating part 23 into a tight whole, thereby achieving a sealing effect on the inner cavity 14 at the perforation 15 and ensuring the sealing performance of the battery frame 13.

[0107] Furthermore, the mounting hole is formed with an internal thread, and the fastener 22 is a bolt 222, which mates with the internal thread.

[0108] In other words, the bolt 222 is connected and fixed by the internal thread of the mounting hole, which can improve the connection strength between the fastener 22, the seal 21 and the mating part 23, thereby ensuring the positional stability of the sealing assembly 2 and thus ensuring the sealing effect of the hollow beam 19.

[0109] In this connection, the nut 221 and bolt 222 are connected by threads. Compared to other connection methods, this method allows operators to quickly disassemble and replace parts using simple tools (such as wrenches and screwdrivers). Furthermore, it is simple in structure, low in cost, and reusable, thus improving its ease of assembly and disassembly and its practicality. In addition, the bolt 222 can achieve a good sealing effect by cooperating with the sealing element 21 (such as a washer), preventing liquid or gas leakage and ensuring the airtightness of the hollow beam 19.

[0110] Specifically, in combination Figure 9 , Figure 12 and Figure 15 As shown, the mating part 23 has a mounting cavity 231 that communicates with the through hole 15, and the fastener 22 located in the mounting cavity 231 does not protrude from the mounting cavity 231 along its length direction.

[0111] It is understandable that since the mounting cavity 231 is located inside the inner cavity 14 of the hollow beam 19 and is connected to the through hole 15, the fastener 22 can be pre-passed through the through hole 15 in the direction facing the inner cavity 14, and then its head near the through hole 15 can be placed in the mounting cavity 231 without protruding from the mounting cavity 231. This can ensure the sealing effect while reducing the arrangement space occupied by the fastener 22 in the battery frame 13, thereby improving the effective utilization space of the battery 3 in the battery frame 13 and thus improving the battery capacity.

[0112] Among them, combined Figure 9 , Figure 12 and Figure 15 As shown, the edge of the mating part 23 is arranged around the through hole 15. This arrangement makes it easy for the mating part 23 to have mounting holes corresponding to the through hole 15, thereby ensuring that the mating part 23, after mating with the fastener 22 and the seal 21, can achieve a sealing effect on the inner cavity 14 at the through hole 15. Welded connections have the characteristics of high connection strength and good sealing performance. The edge of the mating part 23 is welded to the side wall of the hollow beam 19, which can improve the sealing reliability.

[0113] Optionally, the mating part 23 includes a connecting part 232 and a main body part 233. The connecting part 232 is provided with a mounting hole. The main body part 233 is connected to the side of the connecting part 232 near the through hole 15. The main body part 233 is ring-shaped, and the inner diameter of the main body part 233 is larger than the diameter of the through hole 15. This arrangement facilitates the processing and connection of the main body part 233 around the through hole 15 with the solid part of the hollow beam 19. Thus, while ensuring a tight connection between the mating part 23 and the hollow beam 19, the mating part 23 can also cover the through hole 15 in the inner and outer directions, ensuring the sealing effect of the sealing assembly 2.

[0114] According to some optional embodiments of the present invention, combined with Figures 1-4 , Figure 16 and Figure 17 As shown, the subframe 8 includes longitudinally spaced subframe crossbeams 81 and laterally spaced subframe longitudinal beams 82. The subframe crossbeams 81 are connected between the subframe longitudinal beams 82, and the subframe longitudinal beams 82 are installed below the front part of the longitudinal beam 12. The foremost subframe crossbeam 81 is located below the front end of the longitudinal beam 12.

[0115] The subframe crossbeams 81 are spaced apart longitudinally (i.e., in the vehicle's front-to-back direction), and the subframe longitudinal beams 82 are spaced apart laterally (i.e., in the vehicle's left-to-right direction). The subframe crossbeams 81 and subframe longitudinal beams 82 are interconnected and together form a closed load-bearing structural frame. This allows a closed force transmission path to be formed between the subframe crossbeams 81 and subframe longitudinal beams 82, which helps to distribute the loads they receive and thus effectively improves the structural reliability of the frame assembly 100. The subframe longitudinal beams 82 are interconnected with the longitudinal beams 12 of the frame 1, so that the subframe 8 and the frame 1 are connected as a whole. The subframe 8 and the frame 1 increase each other's weight and spatial modes, thereby improving their structural strength and bending and torsional stiffness.

[0116] Furthermore, the subframe 8 and the frame 1 form a dual force transmission channel structure. Thus, when the frame assembly 100 is subjected to a collision impact, the subframe 8 can share part of the collision force at the front end of the frame assembly 100, reducing the risk of deformation of the front section of the longitudinal beam 12 of the frame 1. This ensures the structural integrity of the battery frame 13 in the middle of the frame assembly 100, reduces the risk of failure of the battery frame 13 due to compression of the battery 3, improves the safety of the battery 3, and also reduces the risk of deformation of the passenger compartment, thereby improving the overall safety of the vehicle.

[0117] Alternatively, the subframe 8 and the roof 7 can be made of steel, or aluminum or carbon fiber to reduce weight.

[0118] Specifically, in combination Figure 16 and Figure 17As shown, the subframe 8 also includes a mounting bracket 83, which is connected to the subframe longitudinal beam 82. The mounting bracket 83 extends laterally to the upper side relative to the subframe longitudinal beam 82 and is mounted below the front of the longitudinal beam 12.

[0119] As arranged as described above, the mounting bracket 83 can further increase the weight and spatial modality of the subframe 8, thereby improving the structural strength and rigidity of the subframe 8. It can also provide an installation platform for the subframe 8. Since the mounting bracket 83 extends laterally to the upper side relative to the longitudinal beam 82 of the subframe, it can shorten the vertical distance between the subframe 8 and the frame 1. It also makes it easier for operators to connect the subframe 8 and the frame 1 by simply connecting the mounting bracket 83 to the longitudinal beam 12 of the frame 1 in the vertical direction, thereby improving the assembly efficiency of the two.

[0120] Alternatively, combined Figure 16 and Figure 17 As shown, the rear end of the subframe longitudinal beam 82 is provided with a mounting section 821 that bends laterally outward, and the mounting section 821 is installed below the front part of the longitudinal beam 12. This arrangement increases the number of stress-bearing connection points between the subframe 8 and the longitudinal beam 12 of the frame 1, thereby increasing the number of force transmission channels between the subframe longitudinal beam 82 and the longitudinal beam 12, improving the collision resistance and energy absorption capacity of the frame assembly 100, and thus improving the structural stability and reliability.

[0121] Alternatively, combine Figure 18 As shown, the chassis assembly 100 also includes a front suspension 9, which is mounted on the subframe 8. Since the subframe 8 is usually an independent module, the above arrangement can optimize the suspension geometry of the vehicle body, improve the vehicle's handling performance and ride comfort, and also simplify the assembly process and facilitate maintenance.

[0122] Alternatively, combining Figure 18 As shown, the chassis assembly 100 also includes a steering gear 91, which is mounted on the subframe 8. This optimizes the suspension geometry of the vehicle body and improves assembly efficiency.

[0123] Alternatively, combining Figure 18 As shown, the chassis assembly 100 also includes a front main reduction gear 92, which is mounted on the subframe 8. This optimizes the suspension geometry of the vehicle body, simplifies the assembly process, and improves assembly efficiency.

[0124] Alternatively, the chassis assembly 100 may also include a front suspension 9, a steering gear 91, and a front final drive 92, all of which are mounted on the subframe 8. This ensures that the relative positions of the various suspension components remain consistent, thereby optimizing the dynamic response performance of the suspension system.

[0125] According to the second aspect of the present invention, the vehicle includes the frame assembly 100 of the above embodiment. Thus, the vehicle having the frame assembly 100 can integrate the battery frame 13 onto the frame 1, thereby increasing the space for the battery 3, ensuring the sealing of the battery frame 13, and enabling the subframe 8 and the frame 1 to form a dual force transmission channel structure, thereby improving the collision resistance and energy absorption capacity of the front end of the frame assembly 100, enhancing the structural protection effect of the battery 3, and further improving the range of the whole vehicle and the safety and reliability of the battery 3.

[0126] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0127] 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, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0128] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0129] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0130] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0131] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A frame assembly (100), characterized in that, include: The frame (1) includes longitudinally spaced crossbeams (11) and laterally spaced longitudinal beams (12), the crossbeams (11) being connected between the longitudinal beams (12), and the middle of the crossbeams (11) and the longitudinal beams (12) together forming a closed battery frame (13). Top cover (7), the top cover (7) is connected to the upper side of the battery frame (13); Battery (3), the battery (3) is mounted on the battery frame (13); Subframe (8) is mounted below the front of the longitudinal beam (12).

2. The frame assembly (100) according to claim 1, characterized in that, The longitudinal beam (12) includes: A front straight beam (121) extends in the front-rear direction, and the subframe (8) is mounted below the front straight beam (121); A rear straight beam (122) is provided behind the front straight beam (121); A central straight beam (123) is disposed between the front straight beam (121) and the rear straight beam (122). In the left-right direction, the lateral spacing between the central straight beams (123) is greater than the lateral spacing between the front straight beams (121), and the lateral spacing between the central straight beams (123) is greater than the lateral spacing between the rear straight beams (122). A front inclined beam (124) is bent and connected between the front straight beam (121) and the middle straight beam (123); A rear inclined beam (125) is bent and connected between the middle straight beam (123) and the rear straight beam (122); The front crossbeam (11) is connected to the front inclined beam (124), and the rear crossbeam (11) is connected to the rear inclined beam (125).

3. The frame assembly (100) according to claim 2, characterized in that, Also includes: At least one reinforcing diagonal beam (4) extends obliquely and connects between the crossbeam (11) and the longitudinal beam (12); In the front-to-back direction, at least one of the reinforcing diagonal beams (4) and the crossbeams (11) are respectively connected to both sides of the connection between the front straight beam (121) and the front diagonal beam (124).

4. The frame assembly (100) according to claim 1, characterized in that, The battery (3) includes: Tray (32), said tray (32) is attached to the underside of the battery frame (13); Battery cell (31), the battery cell (31) is mounted on the upper side of the tray (32); The top cover (7), the battery frame (13), and the tray (32) together enclose the cavity (33) for receiving the battery cell (31).

5. The frame assembly (100) according to claim 4, characterized in that, Also includes: A reinforcing beam (5) extends laterally and is disposed within the receiving cavity (33) and connected between the longitudinal beams (12). A reinforcing longitudinal beam (6) extends longitudinally and is disposed within the receiving cavity (33) and connected between the crossbeam (11) and the reinforcing crossbeam (5) on the side near the reinforcing crossbeam (5).

6. The frame assembly (100) according to claim 5, characterized in that, The battery cell (31) is provided with multiple layers in the vertical direction. The multiple layers of the battery cell (31) include a first layer of the battery cell (31) and a second layer of the battery cell (31). The first layer of the battery cell (31) is located above the second layer of the battery cell (31). In the front-back direction, the length of the first layer of the battery cell (31) is less than the length of the second layer of the battery cell (31). Among them, the first layer of battery cell (31), the second layer of battery cell (31) and the battery frame (13) together form a clearance space (34), and the reinforcing crossbeam (5) and the reinforcing longitudinal beam (6) are located in the clearance space (34).

7. The frame assembly (100) according to claim 5, characterized in that, Also includes: A reinforcing inclined beam (4) extends obliquely in the front-back direction. One end of the reinforcing inclined beam (4) is connected to the crossbeam (11), and the other end is connected to the longitudinal beam (12) in a direction away from the battery cell (31). The connection between the reinforcing diagonal beam (4) and the crossbeam (11) corresponds to the connection between the reinforcing longitudinal beam (6) and the crossbeam (11) at the front and rear positions of the crossbeam (11).

8. The frame assembly (100) according to claim 4, characterized in that, At least one edge of the outer periphery of the tray (32) has an upward protrusion (321), and the lower side of the battery frame (13) has an upward recess (131), with the protrusion (321) and the recess (131) being matched in a limiting manner.

9. The frame assembly (100) according to any one of claims 1-8, characterized in that, At least one of the crossbeam (11) and the longitudinal beam (12) is a hollow beam (19) with an inner cavity (14), and the hollow beam (19) is provided with a perforation (15) communicating with the inner cavity (14). The frame assembly (100) also includes: A sealing assembly (2) is disposed on the hollow beam (19) and corresponds to the perforation (15) to seal the inner cavity (14).

10. The frame assembly (100) according to claim 9, characterized in that, The sealing assembly (2) includes: A sealing element (21) is attached to the wall of the hollow beam (19) and arranged around the perforation (15); Fastener (22) passes through the seal (21) and the perforation (15).

11. The frame assembly (100) according to claim 10, characterized in that, The fastener (22) includes: Nut (221), the nut (221) is located in the inner cavity (14) and corresponds to the through hole (15); Bolt (222), which passes through the seal (21) and the through hole (15) and is threaded into the nut (221).

12. The frame assembly (100) according to claim 11, characterized in that, The hollow beam (19) is provided with a recessed groove (16) facing the inner cavity (14), the through hole (15) is provided at the bottom of the recessed groove (16), and the fastener (22) located in the recessed groove (16) does not protrude from the recessed groove (16) along its length; or The hollow beam (19) is provided with a flat plate area (17), and the flat plate area (17) is provided with the perforation (15).

13. The frame assembly (100) according to claim 11, characterized in that, The perforation (15) is provided on the inner side wall of the hollow beam (19), and the outer side wall of the hollow beam (19) is provided with a tool through hole (18) for passing through the fastening tool and the nut (221). The tool through hole (18) corresponds to the perforation (15) in the inner and outer directions.

14. The frame assembly (100) according to claim 9, characterized in that, The sealing assembly (2) is located within the inner cavity (14), and the sealing assembly (2) includes: The mating part (23) is located inside the inner cavity (14) and has a mounting hole corresponding to the through hole (15); A sealing element (21) is attached to the mating element (23) and arranged around the mounting hole; Fastener (22) passes through the seal (21) and is installed in the mounting hole.

15. The frame assembly (100) according to claim 14, characterized in that, The mounting hole has an internal thread, and the fastener (22) is a bolt (222) that engages with the internal thread.

16. The frame assembly (100) according to claim 14, characterized in that, The mating part (23) has a mounting cavity (231) communicating with the through hole (15), and the fastener (22) located in the mounting cavity (231) does not protrude from the mounting cavity (231) along its length; or The edge of the fitting (23) is arranged around the perforation (15) and welded to the sidewall of the hollow beam (19).

17. The frame assembly (100) according to any one of claims 1-8, characterized in that, The subframe (8) includes: Longitudinal spacing of subframe crossbeams (81); The subframe longitudinal beams (82) are spaced laterally, and the subframe crossbeams (81) are connected between the subframe longitudinal beams (82). The subframe longitudinal beams (82) are installed below the front part of the longitudinal beams (12). Among them, the subframe crossbeam (81) located at the frontmost position is located below the front end of the longitudinal beam (12).

18. The frame assembly (100) according to claim 17, characterized in that, The subframe (8) also includes: Mounting bracket (83), the mounting bracket (83) being connected to the subframe longitudinal beam (82) and extending laterally outward relative to the subframe longitudinal beam (82), the mounting bracket (83) being mounted below the front portion of the longitudinal beam (12); and / or The rear end of the subframe longitudinal beam (82) is provided with a mounting section (821) that bends laterally outward, and the mounting section (821) is installed below the front part of the longitudinal beam (12).

19. The frame assembly (100) according to any one of claims 1-8, characterized in that, Also includes: Front suspension (9), said front suspension (9) is mounted on said subframe (8); and / or Steering gear (91), said steering gear (91) is mounted on said subframe (8); and / or A front main reducer (92) is mounted on the subframe (8).

20. A vehicle, characterized in that, include: The frame assembly (100) according to any one of claims 1-19.

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