Vehicle body frame and vehicle

Abstract

The present invention discloses a vehicle body frame and a vehicle. The vehicle body frame includes a sill assembly, an A-pillar assembly, a rear engine bay longitudinal beam assembly, and a front bulkhead root cross beam assembly. The sill assembly includes a sill and a first reinforcing member and a second reinforcing member provided at the front end of the sill. The second reinforcing member is located inside the first reinforcing member. The sill, the first reinforcing member, and the second reinforcing member are all separately formed parts. The lower end of the A-pillar assembly is connected to the sill assembly, and both the first reinforcing member and the second reinforcing member are connected to the A-pillar assembly. The rear engine bay longitudinal beam assembly is connected to both the A-pillar assembly and the sill assembly. The front bulkhead root cross beam assembly is connected to both the A-pillar assembly and the sill assembly. According to the vehicle body frame of the embodiment of the present invention, the connection strength between the A-pillar assembly, the rear engine bay longitudinal beam assembly, and the front bulkhead root cross beam assembly and the sill assembly can be increased, the intrusion amount during a small overlap frontal collision of the vehicle can be effectively controlled, and the safety of vehicle occupants can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle body frame and a vehicle. Background Art

[0002] In the related art, in the small overlap crash condition, the body structures in the areas such as the front joint of the sill, the lower part of the A-pillar, and the front wall are prone to tear and deform, resulting in the problem that the occupant injury value exceeds the standard, for example, causing the occupant foot injury value to exceed the standard. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a vehicle body frame. By adding a first reinforcing member and a second reinforcing member at the front end of the sill, the connection strength between the A-pillar assembly, the rear longitudinal beam assembly of the engine compartment, and the cross beam assembly at the root of the front wall and the sill assembly can be increased, the overall rigidity of the connection area of the sill assembly can be improved, and multiple force transmission channels can be added to disperse the impact force, effectively control the intrusion amount when the vehicle has a small overlap crash, reduce the tearing degree of the connection area of the sill assembly, and improve the safety of vehicle occupants.

[0004] The present invention also provides a vehicle with the above vehicle body frame.

[0005] The vehicle body frame according to the first aspect embodiment of the present invention includes: a sill assembly, the sill assembly includes a sill and a first reinforcing member and a second reinforcing member provided at the front end of the sill, the second reinforcing member is located inside the first reinforcing member, and the sill, the first reinforcing member, and the second reinforcing member are all separately formed parts; an A-pillar assembly, the lower end of the A-pillar assembly is connected to the sill assembly, and the sill, the first reinforcing member, and the second reinforcing member are all connected to the A-pillar assembly; a rear longitudinal beam assembly of the engine compartment, the rear longitudinal beam assembly of the engine compartment is connected to both the A-pillar assembly and the sill assembly; a cross beam assembly at the root of the front wall, the cross beam assembly at the root of the front wall is connected to both the A-pillar assembly and the sill assembly.

[0006] For the vehicle body frame according to the embodiment of the present invention, by adding a first reinforcing member and a second reinforcing member at the front end of the sill, the connection strength between the A-pillar assembly, the rear longitudinal beam assembly of the engine compartment, and the cross beam assembly at the root of the front wall and the sill assembly can be increased, the overall rigidity of the connection area of the sill assembly can be improved, and multiple force transmission channels can be added to disperse the impact force, effectively control the intrusion amount when the vehicle has a small overlap crash, reduce the tearing degree of the connection area of the sill assembly, and improve the safety of vehicle occupants.

[0007] According to some embodiments of the present invention, the lower end of the A-pillar assembly and the rear longitudinal beam assembly of the engine compartment jointly cover the front end of the sill assembly.

[0008] According to some alternative embodiments of the present invention, the A-pillar assembly includes an inner lower A-pillar panel and an A-pillar reinforcement plate. The A-pillar reinforcement plate is disposed outside the inner lower A-pillar panel and at least covers the outer side surface of the sill. The inner lower A-pillar panel at least covers the inner side surface of the sill. A hollow cavity is formed in the sill. The first reinforcement member is disposed in the hollow cavity and is connected to both the sill and the A-pillar reinforcement plate. The second reinforcement member is disposed on the upper surface of the sill and is connected to both the sill and the inner lower A-pillar panel.

[0009] According to some alternative embodiments of the present invention, three layers of the hollow cavities arranged in the up-down direction are formed in the sill. The first reinforcement member is disposed in the middle hollow cavity in the up-down direction. A first fastener is adapted to pass through the A-pillar reinforcement plate, the outer side wall of the sill, and the first reinforcement member.

[0010] According to some alternative embodiments of the present invention, in the up-down direction, the two upper layers of the hollow cavities each include a plurality of sub-hollow cavities spaced apart in the left-right direction. Adjacent sub-hollow cavities are separated by partition plates. The thickness range of the outer side walls of the two upper layers of the hollow cavities is 2 to 2.5 mm. The thickness range of the partition plates is 3 to 3.5 mm. The thickness range of the inner side walls of the two upper layers of the hollow cavities is 4 to 4.5 mm.

[0011] According to some alternative embodiments of the present invention, a reinforcing rib plate is provided on the upper surface of the sill. In the left-right direction, the reinforcing rib plate is in the middle of the sill and extends in the front-rear direction. The second reinforcement member is located inside the reinforcing rib plate and extends in the front-rear direction.

[0012] According to some alternative embodiments of the present invention, a hollow structure is formed in the second reinforcement member. The cross-section of the second reinforcement member is in a "square" shape.

[0013] According to some alternative embodiments of the present invention, the rear longitudinal beam assembly of the engine compartment at least covers at least a part of the bottom surface of the sill. The rear longitudinal beam assembly of the engine compartment is connected to the front side surface of the sill and the A-pillar assembly.

[0014] According to some alternative embodiments of the present invention, the A-pillar assembly further includes a third reinforcement member. A hollow structure is formed in the third reinforcement member. The third reinforcement member is disposed on the bottom surface of the inner lower A-pillar panel. A notch extending in the front-rear direction is formed at the bottom of the sill. The third reinforcement member is received in the notch.

[0015] According to some alternative embodiments of the present invention, the rear longitudinal beam assembly of the engine compartment includes a bottom connecting plate, a transverse support plate, a front connecting plate, and a rear section of the longitudinal beam. The bottom connecting plate extends in the left-right direction. The transverse support plate is disposed on the bottom connecting plate and connected to the third reinforcing member. A part of the bottom connecting plate covers the bottom surface of the sill and the bottom surface of the third reinforcing member. The bottom connecting plate is connected to the sill. The front connecting plate is disposed on the front side of the bottom connecting plate and connected to the transverse support plate. A part of the front connecting plate is located on the front side of the sill and connected to the sill. The rear section of the longitudinal beam is disposed on the bottom connecting plate and connected to the transverse support plate. The transverse support plate is connected between the sill and the rear section of the longitudinal beam.

[0016] According to some alternative embodiments of the present invention, the front root crossbeam assembly of the vehicle body includes an upper front crossbeam and a crossbeam upper cover plate. The crossbeam upper cover plate is disposed on the upper front crossbeam. The upper front crossbeam is connected to the front end of the inner lower plate of the A-pillar. The crossbeam upper cover plate is connected to the inner lower plate of the A-pillar and the second reinforcing member.

[0017] According to some alternative embodiments of the present invention, an extension portion extending rearward is formed on the crossbeam upper cover plate. The vehicle body frame further includes a front floor crossbeam. The front floor crossbeam has a connecting portion. The connecting portion is stacked with the extension portion and located inside the extension portion. The extension portion is connected to the connecting portion and the inner lower plate of the A-pillar.

[0018] According to some embodiments of the present invention, both the sill and the second reinforcing member are made of aluminum alloy, and the first reinforcing member, the A-pillar assembly, the rear longitudinal beam assembly of the engine compartment, and the front root crossbeam assembly of the vehicle body are all made of steel.

[0019] A vehicle according to an embodiment of the second aspect of the present invention includes a vehicle body frame according to the above-mentioned first aspect embodiment of the present invention.

[0020] By providing the above-mentioned vehicle body frame, the connection strength between the A-pillar assembly, the rear longitudinal beam assembly of the engine compartment, and the front root crossbeam assembly and the sill assembly can be increased, the overall rigidity of the connection area of the sill assembly can be improved, and multiple force transmission channels can be added to disperse the impact force, effectively controlling the intrusion amount when the vehicle has a small offset collision, reducing the tearing degree of the connection area of the sill assembly, and improving the safety of vehicle occupants.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a partial structure three-dimensional view of a vehicle body frame according to some embodiments of the present invention;

[0024] Figure 2 is Figure 1 a schematic diagram of multiple force transmission channels in the X / Y / Z three directions of a partial structure of the middle vehicle body frame;

[0025] Figure 3 is Figure 1 an exploded view of a partial structure of the vehicle body frame;

[0026] Figure 4 is Figure 1 an exploded view of a sill assembly;

[0027] Figure 5 is Figure 1 an exploded view of a rear engine compartment longitudinal beam assembly;

[0028] Figure 6 is Figure 1 an exploded view of a front bulkhead root crossbeam assembly;

[0029] Figure 7 is Figure 1 an exploded view of an A-pillar assembly;

[0030] Figure 8 is Figure 1 a three-dimensional view of a front floor crossbeam.

[0031] Reference numerals:

[0032] 100, vehicle body frame;

[0033] 1, sill assembly; 11, sill; 111, hollow cavity; 1111, sub-hollow cavity; 1112, partition; 112, stiffening rib plate; 113, notch; 12, first reinforcing member; 121, riveting hole; 13, second reinforcing member; 131, first mounting hole; 132, second mounting hole;

[0034] 2, rear engine compartment longitudinal beam assembly; 21, bottom end connecting plate; 22, transverse support plate; 23, front end connecting plate; 24, rear section of the longitudinal beam;

[0035] 3, front bulkhead root crossbeam assembly; 31, upper front bulkhead crossbeam; 32, crossbeam upper cover plate; 321, extension; 33, crossbeam inner support plate; 34, crossbeam lower plate;

[0036] 4. A-pillar assembly; 40. A-pillar inner panel; 41. A-pillar lower inner panel; 42. A-pillar upper inner panel; 43. Third reinforcement member; 44. A-pillar reinforcement panel; 45. A-pillar inner support partition;

[0037] 5. Front floor cross member; 51. Connecting part. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] Reference below Figures 1 - 8 A vehicle body frame 100 according to an embodiment of the present invention is described.

[0040] According to the first embodiment of the present invention, the vehicle body frame 100 is Figures 1 - 3 The vehicle body frame 100 includes a door sill assembly 1, an A-pillar assembly 4, a front enclosure root cross beam assembly 3 and a cabin rear longitudinal beam assembly 2. The A-pillar assembly 4, the front enclosure root cross beam assembly 3 and the cabin rear longitudinal beam assembly 2 can all be connected to the door sill assembly 1.

[0041] The threshold assembly 1 includes a threshold 11, a first reinforcement 12, and a second reinforcement 13. The first reinforcement 12 and the second reinforcement 13 are arranged at the front end of the threshold 11, and the second reinforcement 13 is located on the inner side of the first reinforcement 12, which can improve the overall rigidity of the connection area of the threshold assembly 1. The threshold 11, the first reinforcement 12, and the second reinforcement 13 are all separately formed parts. After the threshold 11, the first reinforcement 12, and the second reinforcement 13 are independently formed, they are connected to form the threshold assembly 1. After the threshold 11, the first reinforcement 12, and the second reinforcement 13 are independently formed, they are connected to reduce the difficulty of processing and forming the threshold assembly 1.

[0042] The second reinforcement 13 is located on the inner side of the first reinforcement 12, which means that the second reinforcement 13 is located on the side of the first reinforcement 12 adjacent to the center of the vehicle body. For example, when the door sill assembly 1 is located at the left end of the vehicle body, the second reinforcement 13 is located on the right side of the first reinforcement 12; when the door sill assembly 1 is located at the right end of the vehicle body, the second reinforcement 13 is located on the left side of the first reinforcement 12.

[0043] The lower end of the A-pillar assembly 4 is connected to the sill assembly 1. For example, the lower end of the A-pillar assembly 4 can wrap the front end of the sill assembly 1. The sill 11, the first reinforcement 12, and the second reinforcement 13 are all connected to the A-pillar assembly 4. By adding the first reinforcement 12 and the second reinforcement 13 at the front end of the sill 11, the connection strength between the A-pillar assembly 4 and the sill assembly 1 can be increased. For example, when a small overlap collision occurs to the vehicle, the connection between the lower end of the A-pillar assembly 4 and the sill assembly 1 may be impacted. Adding the first reinforcement 12 and the second reinforcement 13 at the front end of the sill 11 can enhance the connection strength between the A-pillar assembly 4 and the sill assembly 1, making it not easy for the connection between the A-pillar assembly 4 and the sill assembly 1 to tear and deform. It can also achieve the dispersion and transfer of the impact force received by the A-pillar assembly 4 to the sill assembly 1, thereby reducing the tearing and intrusion amount of the vehicle when a small overlap collision occurs to the vehicle.

[0044] The rear longitudinal beam assembly 2 of the engine compartment is connected to both the A-pillar assembly 4 and the sill assembly 1. The front bulkhead root crossbeam assembly 3 is connected to both the A-pillar assembly 4 and the sill assembly 1. The second reinforcement 13 of the sill assembly 1 is connected to the front bulkhead root crossbeam assembly 3, which can add a force transmission channel in the Y direction (for example, the left-right direction in the attached drawings). The impact force can be transmitted from the sill assembly 1 to the front bulkhead root crossbeam assembly 3, which can disperse the impact force at the connection of the sill assembly 1 and can also increase the connection strength between the front bulkhead root crossbeam assembly 3 and the sill assembly 1, making it not easy for the connection between the front bulkhead root crossbeam assembly 3 and the sill assembly 1 to tear.

[0045] For example, referring to Figure 2 ( Figure 2 in the figure, the arrow direction is the transmission direction of the impact force), when a small overlap collision occurs to the vehicle, the connections of the A-pillar assembly 4, the rear longitudinal beam assembly 2 of the engine compartment, the front bulkhead root crossbeam assembly 3, and the sill assembly 1 will be impacted. The A-pillar assembly 4 is connected to the sill assembly 1, which can form a Z-direction (for example, the up-down direction in the attached drawings) force transmission channel and an X-direction (for example, the front-back direction in the attached drawings) force transmission channel, and can transmit the impact force from the A-pillar assembly 4 to the sill assembly 1. The rear longitudinal beam assembly 2 of the engine compartment, the sill assembly 1, and the A-pillar assembly 4 are all connected, which can form a Y-direction force transmission channel and can transmit the impact force to the rear longitudinal beam assembly 2 of the engine compartment, the sill assembly 1, and the A-pillar assembly 4 to disperse the impact force. The front bulkhead root crossbeam assembly 3 is connected to both the A-pillar assembly 4 and the sill assembly 1, and can also form a Y-direction force transmission channel and can transmit the impact force to the front bulkhead root crossbeam assembly 3, the A-pillar assembly 4, and the sill assembly 1.

[0046] In addition, the above structure strengthens the connection strength between the A-pillar assembly 4, the rear longitudinal beam assembly 2 of the engine compartment, and the front bulkhead root crossbeam assembly 3 and the sill assembly 1, improves the overall rigidity of the connection area of the sill assembly 1, can cancel the floor longitudinal beam assembly, install the battery pack on the basis of canceling the floor longitudinal beam assembly, there is no floor longitudinal beam assembly occupying the Y-direction space of the battery pack, and the capacity of the battery pack can be increased.

[0047] For the vehicle body frame 100 according to the embodiment of the present invention, by adding a first reinforcing member 12 and a second reinforcing member 13 at the front end of the sill 11, the connection strength between the A-pillar assembly 4, the rear longitudinal beam assembly 2 of the engine compartment, and the front bulkhead root crossbeam assembly 3 and the sill assembly 1 can be increased, the overall rigidity of the connection area of the sill assembly 1 can be improved, and multiple force transmission channels can also be added to disperse the impact force, effectively control the intrusion amount when the vehicle has a small offset collision, reduce the tearing degree of the connection area of the sill assembly 1, and improve the safety of vehicle occupants.

[0048] According to some embodiments of the present invention, referring to Figures 1 - 3 , the lower end of the A-pillar assembly 4 and the rear longitudinal beam assembly 2 of the engine compartment jointly cover the front end of the sill assembly 1, and the rear longitudinal beam assembly 2 of the engine compartment can cover the bottom surface of the sill assembly 1. The connection surfaces between the sill assembly 1 and the lower end of the A-pillar assembly 4 and the rear longitudinal beam assembly 2 of the engine compartment are larger, which can further increase the connection strength between the lower end of the A-pillar assembly 4 and the rear longitudinal beam assembly 2 of the engine compartment and the sill assembly 1, making the overall stiffness at the connection between the lower end of the A-pillar assembly 4 and the rear longitudinal beam assembly 2 of the engine compartment and the sill assembly 1 larger and less likely to tear and deform.

[0049] According to some alternative embodiments of the present invention, referring to Figures 1 - 3 and Figure 7 , the A-pillar assembly 4 includes an A-pillar lower inner panel 41 and an A-pillar reinforcement plate 44. The A-pillar reinforcement plate 44 is provided on the outer side of the A-pillar lower inner panel 41, and the A-pillar reinforcement plate 44 at least covers the outer side surface of the sill 11. It can be that a part of the A-pillar reinforcement plate 44 covers the outer side surface of the sill 11, or the A-pillar reinforcement plate 44 entirely covers the outer side surface of the sill 11. The A-pillar lower inner panel 41 at least covers the inner side surface of the sill 11. It can be that a part of the A-pillar lower inner panel 41 covers the inner side surface of the sill 11, or the A-pillar lower inner panel 41 entirely covers the inner side surface of the sill 11. The A-pillar lower inner panel 41 and the A-pillar reinforcement plate 44 respectively cover the inner side surface and the outer side surface of the sill 11, making the connection strength between the A-pillar lower inner panel 41 and the A-pillar reinforcement plate 44 and the sill 11 stronger, and further making the connection strength between the A-pillar assembly 4 and the sill 11 stronger.

[0050] Among them, the A-pillar reinforcement plate 44 is provided on the outer side of the lower inner A-pillar plate 41, which means that the A-pillar reinforcement plate 44 is located on the side of the lower inner A-pillar plate 41 away from the center of the vehicle body. For example, when the A-pillar assembly 4 is the A-pillar assembly 4 located at the left end of the vehicle body, the A-pillar reinforcement plate 44 is located on the left side of the lower inner A-pillar plate 41; when the A-pillar assembly 4 is the A-pillar assembly 4 located at the right end of the vehicle body, the A-pillar reinforcement plate 44 is located on the right side of the lower inner A-pillar plate 41.

[0051] The A-pillar reinforcement plate 44 at least covers the outer side surface of the sill 11, which means that the A-pillar reinforcement plate 44 at least covers the side surface of the sill 11 away from the center of the vehicle body. For example, when the A-pillar reinforcement plate 44 and the sill 11 are the A-pillar reinforcement plate 44 and the sill 11 located at the left end of the vehicle body, the A-pillar reinforcement plate 44 at least covers the left side surface of the sill 11; when the A-pillar reinforcement plate 44 and the sill 11 are the A-pillar reinforcement plate 44 and the sill 11 located at the right end of the vehicle body, the A-pillar reinforcement plate 44 at least covers the right side surface of the sill 11.

[0052] The lower inner A-pillar plate 41 at least covers the inner side surface of the sill 11, which means that the lower inner A-pillar plate 41 at least covers the side surface of the sill 11 close to the center of the vehicle body. For example, when the lower inner A-pillar plate 41 and the sill 11 are the lower inner A-pillar plate 41 and the sill 11 located at the left end of the vehicle body, the lower inner A-pillar plate 41 at least covers the right side surface of the sill 11; when the lower inner A-pillar plate 41 and the sill assembly 1 are the lower inner A-pillar plate 41 and the sill 11 located at the right end of the vehicle body, the lower inner A-pillar plate 41 at least covers the left side surface of the sill 11.

[0053] A hollow cavity 111 is formed inside the sill 11, which can reduce the weight of the sill 11; when the vehicle is impacted, the hollow cavity 111 formed inside the sill 11 can absorb the impact force and crush and deform, thereby effectively protecting the safety of vehicle occupants. The first reinforcing member 12 is provided inside the hollow cavity 111, which can make the first reinforcing member 12 not occupy the space outside the sill 11, can improve the space utilization rate of the hollow cavity 111, and can also save the space outside the sill 11; and the first reinforcing member 12 is connected to both the sill 11 and the A-pillar reinforcement plate 44. By providing the first reinforcing member 12, the connection strength between the sill 11 and the A-pillar reinforcement plate 44 can be increased. For example, the first reinforcing member 12 can be an L-shaped plate, and a reinforcing structure is formed at the turning point of the L-shaped plate, which can increase the structural strength of the first reinforcing member 12.

[0054] The second reinforcement member 13 is disposed on the upper surface of the sill 11. For example, the second reinforcement member 13 can be fixed to the upper surface of the sill 11 by welding. Fixing the second reinforcement member 13 by welding can make the connection strength between the second reinforcement member 13 and the sill 11 stronger. Moreover, the second reinforcement member 13 is connected to both the sill 11 and the lower inner panel 41 of the A-pillar, which can increase the connection strength between the sill 11 and the lower inner panel 41 of the A-pillar. For example, a second mounting hole 132 is formed on the inner side surface of the second reinforcement member 13, and a fastener (such as a screw) can be passed through the second mounting hole 132 to connect the sill 11 and the lower inner panel 41 of the A-pillar.

[0055] Wherein, the formation of the second mounting hole 132 on the inner side surface of the second reinforcement member 13 means that the second mounting hole 132 is formed on the side surface of the second reinforcement member 13 close to the center of the vehicle body. For example, when the second reinforcement member 13 is the second reinforcement member 13 located at the left end of the vehicle body, the second mounting hole 132 is formed on the right side surface of the second reinforcement member 13; when the second reinforcement member 13 is the second reinforcement member 13 located at the right end of the vehicle body, the second mounting hole 132 is formed on the left side surface of the second reinforcement member 13.

[0056] For example, the A-pillar assembly 4 can further include an upper inner panel 42 of the A-pillar and an A-pillar support partition 45. The upper inner panel 42 of the A-pillar is connected above the lower inner panel 41 of the A-pillar. The upper inner panel 42 of the A-pillar and the lower inner panel 41 of the A-pillar together form the inner panel 40 of the A-pillar, and the inner panel 40 of the A-pillar is located inside the A-pillar reinforcement plate 44. The A-pillar support partition 45 is located between the lower inner panel 41 of the A-pillar and the A-pillar reinforcement plate 44. The A-pillar support partition 45 can be in contact with the A-pillar reinforcement plate 44. The A-pillar support partition 45 can cover the front side surface, the outer side surface and the top surface of the sill 11 to strengthen the structural strength of the A-pillar assembly 4 and can also increase the connection strength between the A-pillar assembly 4 and the sill assembly 1.

[0057] According to some alternative embodiments of the present invention, with reference to Figures 1 - 4 , three layers of hollow cavities 111 arranged in the up-down direction are formed inside the sill 11. The first reinforcement member 12 is disposed in the hollow cavity 111 located in the middle in the up-down direction. The first fastener is adapted to pass through the A-pillar reinforcement plate 44, the outer side wall of the sill 11 and the first reinforcement member 12 to connect and fix the A-pillar reinforcement plate 44, the sill 11 and the first reinforcement member 12. By disposing the first reinforcement member 12 in the hollow cavity 111 located in the middle in the up-down direction and using the first fastener to connect the A-pillar reinforcement plate 44, the sill 11 and the first reinforcement member 12, the connection strength between the sill 11 and the A-pillar reinforcement plate 44 can be increased.

[0058] For example, the first reinforcing member 12 can be an L-shaped plate. Third connection holes are formed on the side wall of the L-shaped plate extending in the up-down direction. The first fastener can pass through the third connection holes to connect the A-pillar reinforcement plate 44, the outer side wall of the middle hollow cavity 111, and the first reinforcing member 12. Riveting holes 121 are formed on the side wall of the L-shaped plate extending in the left-right direction for riveting the L-shaped plate to the top wall of the middle hollow cavity 111, further strengthening the connection strength between the first reinforcing member 12 and the sill 11.

[0059] Wherein, the first fastener is used to connect the A-pillar reinforcement plate 44, the outer side wall of the middle hollow cavity 111, and the first reinforcing member 12, which means that the first fastener is used to connect the A-pillar reinforcement plate 44, the side wall of the middle hollow cavity 111 far from the center of the vehicle body, and the first reinforcing member 12. For example, when the A-pillar reinforcement plate 44 and the sill assembly 1 are the A-pillar reinforcement plate 44 and the sill assembly 1 located at the left end of the vehicle body, the first fastener is used to connect the A-pillar reinforcement plate 44, the left side wall of the middle hollow cavity 111, and the first reinforcing member 12; when the A-pillar reinforcement plate 44 and the sill assembly 1 are the A-pillar reinforcement plate 44 and the sill assembly 1 located at the right end of the vehicle body, the first fastener is used to connect the A-pillar reinforcement plate 44, the right side wall of the middle hollow cavity 111, and the first reinforcing member 12.

[0060] According to some alternative embodiments of the present invention, referring to Figures 1 - 4 , three layers of hollow cavities 111 arranged in the up-down direction are formed in the sill 11. In the up-down direction, the two upper layers of hollow cavities 111 each include a plurality of sub-hollow cavities 1111 arranged at intervals in the left-right direction. Adjacent sub-hollow cavities 1111 are separated by partition plates 1112. The thickness range of the outer side walls of the two upper layers of hollow cavities 111 is 2 - 2.5 mm, the thickness range of the partition plates 1112 is 3 - 3.5 mm, and the thickness range of the inner side walls of the two upper layers of hollow cavities 111 is 4 - 4.5 mm. When a small overlap collision occurs to the vehicle, the outer side walls of the two upper layers of hollow cavities 111 can be deformed by the force and collapse to absorb energy. The inner side walls of the two upper layers of hollow cavities 111 have relatively high strength and are not easily deformed or torn, which can improve the safety of vehicle occupants.

[0061] Wherein, the thickness range of the outer side walls of the two upper layers of hollow cavities 111 being 2 - 2.5 mm means that the thickness range of the side walls of the two upper layers of hollow cavities 111 far from the center of the vehicle body is 2 - 2.5 mm. For example, when the sill assembly 1 is the sill assembly 1 located at the left end of the vehicle body, the thickness range of the left side walls of the two upper layers of hollow cavities 111 is 2 - 2.5 mm; when the sill assembly 1 is the sill assembly 1 located at the right end of the vehicle body, the thickness range of the right side walls of the two upper layers of hollow cavities 111 is 2 - 2.5 mm.

[0062] The thickness range of the inner sidewall of the two upper hollow cavities 111 is 4-4.5 mm, which refers to the thickness range of the sidewall of the two upper hollow cavities 111 close to the center of the vehicle body being 4-4.5 mm. For example, when the sill assembly 1 is the sill assembly 1 at the left end of the vehicle body, the thickness range of the right sidewall of the two upper hollow cavities 111 is 4-4.5 mm; when the sill assembly 1 is the sill assembly 1 at the right end of the vehicle body, the thickness range of the left sidewall of the two upper hollow cavities 111 is 4-4.5 mm.

[0063] According to some alternative embodiments of the present invention, referring to Figures 1 - 4 , a reinforcing rib plate 112 is provided on the upper surface of the sill 11. In the left-right direction, the reinforcing rib plate 112 is in the middle of the sill 11, and the reinforcing rib plate 112 extends in the front-rear direction. The reinforcing rib plate 112 can increase the structural strength of the sill 11. The second reinforcing member 13 is located inside the reinforcing rib plate 112, and the second reinforcing member 13 extends in the front-rear direction. The reinforcing rib plate 112 can play a role in pre-positioning the second reinforcing member 13, facilitating the installation and fixation of the second reinforcing member 13. For example, the second reinforcing member 13 can be fixed to the upper surface of the sill 11 by welding. During the welding fixation process, the reinforcing rib plate 112 can play a role in limiting the position and prevent the second reinforcing member 13 from moving.

[0064] Wherein, the second reinforcing member 13 being located inside the reinforcing rib plate 112 means that the second reinforcing member 13 is located on the side of the reinforcing rib plate 112 close to the center of the vehicle body. For example, when the sill assembly 1 is the sill assembly 1 at the left end of the vehicle body, the second reinforcing member 13 is located on the right side of the reinforcing rib plate 112; when the sill assembly 1 is the sill assembly 1 at the right end of the vehicle body, the second reinforcing member 13 is located on the left side of the reinforcing rib plate 112.

[0065] According to some alternative embodiments of the present invention, referring to Figures 1 - 4 , a hollow structure is formed inside the second reinforcing member 13, and the cross-section of the second reinforcing member 13 is in a "mouth" shape, which can reduce the weight of the second reinforcing member 13. When a small offset collision occurs to the vehicle, the second reinforcing member 13 can absorb the impact force and reduce the harm to the vehicle occupants caused by the impact force.

[0066] According to some alternative embodiments of the present invention, referring to Figures 1 - 5, the rear longitudinal beam assembly 2 of the engine compartment at least covers at least a part of the bottom surface of the sill 11. It can be that a part of the rear longitudinal beam assembly 2 of the engine compartment covers a part of the bottom surface of the sill 11, or a part of the rear longitudinal beam assembly 2 of the engine compartment covers the entire bottom surface of the sill 11. It can also be that the entire rear longitudinal beam assembly 2 of the engine compartment covers a part of the bottom surface of the sill 11, or the entire rear longitudinal beam assembly 2 of the engine compartment covers the entire bottom surface of the sill 11. The rear longitudinal beam assembly 2 of the engine compartment is connected to both the front side surface of the sill 11 and the A-pillar assembly 4. For example, when a small offset collision occurs to the vehicle, the rear longitudinal beam assembly 2 of the engine compartment, the sill assembly 1, and the A-pillar assembly 4 will all be impacted. The impact force received by the A-pillar assembly 4 can be transmitted to the rear longitudinal beam assembly 2 of the engine compartment and the sill assembly 1, which can disperse the impact force received by the A-pillar assembly 4; or the impact force received by the rear longitudinal beam assembly 2 of the engine compartment can be transmitted to the A-pillar assembly 4 and the sill assembly 1, which can disperse the impact force received by the rear longitudinal beam assembly 2 of the engine compartment, thereby protecting the safety of the vehicle occupants.

[0067] For example, referring to Figure 2 , when a small offset collision occurs to the vehicle, the rear longitudinal beam assembly 2 of the engine compartment is connected to both the front side surface of the sill 11 and the A-pillar assembly 4. The impact force received by the rear longitudinal beam assembly 2 of the engine compartment can be transmitted to the A-pillar assembly 4 and then transmitted to the sill assembly 1 through the A-pillar assembly 4, forming a first X-direction force transmission channel (for example, referring to Figure 2 where the backward arrow above the up-down direction indicates the first X-direction force transmission channel) and a second X-direction force transmission channel (for example, referring to Figure 2 where the backward arrow below the up-down direction indicates the second X-direction force transmission channel), which can disperse the impact force received by the rear longitudinal beam assembly 2 of the engine compartment, thereby reducing the damage to the rear longitudinal beam assembly 2 of the engine compartment caused by the impact force.

[0068] According to some alternative embodiments of the present invention, referring to Figures 1 - 3 and Figure 7 , the A-pillar assembly 4 further includes a third reinforcement member 43. A hollow structure is formed inside the third reinforcement member 43, which can reduce the weight of the third reinforcement member 43. When a collision occurs to the vehicle, the third reinforcement member 43 can absorb energy and collapse. The third reinforcement member 43 is provided on the bottom surface of the lower inner panel 41 of the A-pillar. A notch 113 extending in the front-rear direction is formed at the bottom of the sill 11. The third reinforcement member 43 is received in the notch 113, which can enhance the strength of the sill 11 and also make the connection strength between the sill 11 and the lower inner panel 41 of the A-pillar stronger.

[0069] According to some alternative embodiments of the present invention, referring to Figures 1 - 3 and Figure 5, the rear longitudinal beam assembly 2 of the engine compartment includes a bottom connecting plate 21, a transverse support plate 22, a front connecting plate 23, and a rear section 24 of the longitudinal beam. The bottom connecting plate 21 extends in the left - right direction. The transverse support plate 22 is arranged on the bottom connecting plate 21, and the transverse support plate 22 is connected to the third reinforcing member 43 of the A - pillar assembly 4, which can strengthen the connection strength between the rear longitudinal beam assembly 2 of the engine compartment and the A - pillar assembly 4. For example, fasteners can be used to connect the transverse support plate 22 and the third reinforcing member 43. A part of the bottom connecting plate 21 covers the bottom surface of the sill 11 and the bottom surface of the third reinforcing member 43 of the A - pillar assembly 4, and the bottom connecting plate 21 is connected to the sill 11. The front connecting plate 23 is arranged on the front side of the bottom connecting plate 21, and the front connecting plate 23 is connected to the transverse support plate 22. A part of the front connecting plate 23 is located on the front side of the sill 11, and a part of the front connecting plate 23 is connected to the sill 11.

[0070] The rear section 24 of the longitudinal beam is arranged on the bottom connecting plate 21, and the rear section 24 of the longitudinal beam is connected to the transverse support plate 22. The transverse support plate 22 is connected between the sill 11 and the rear section 24 of the longitudinal beam. The sill 11 and the rear section 24 of the longitudinal beam are connected through the transverse support plate 22, which can form a second Y - direction force - transmission channel (for example, refer to Figure 2 the second group of arrows extending in the left - right direction in the up - down direction in it is used to indicate the second Y - direction force - transmission channel) and a fourth Y - direction force - transmission channel (for example, refer to Figure 2 the third group of arrows extending in the left - right direction in the up - down direction in it is used to indicate the fourth Y - direction force - transmission channel). The impact force can be transmitted to the rear longitudinal beam assembly 2 of the engine compartment, the A - pillar assembly 4, and the sill assembly 1 through the second Y - direction force - transmission channel and the fourth Y - direction force - transmission channel. Multiple Y - direction force - transmission channels can better disperse the impact force. The connection method between the rear longitudinal beam assembly 2 of the engine compartment and the sill 11 can make the connection surface between the rear longitudinal beam assembly 2 of the engine compartment and the sill 11 larger, which can increase the connection strength between the rear longitudinal beam assembly 2 of the engine compartment and the sill 11.

[0071] For example, the third reinforcing member 43 on the bottom surface of the inner lower panel 41 of the A - pillar and the rear longitudinal beam assembly 2 of the engine compartment are Y - direction connected to the sill 11 and the A - pillar reinforcing plate 44, which can form a fourth Y - direction force - transmission channel. When a small - overlap collision occurs to the vehicle, the impact force can be transmitted to the rear longitudinal beam assembly 2 of the engine compartment, the A - pillar assembly 4, and the sill assembly 1 through the fourth Y - direction force - transmission channel, which can disperse the impact force of the small - overlap collision, and thus can protect the safety of vehicle occupants.

[0072] Another example is that the rear section 24 of the longitudinal beam of the rear longitudinal beam assembly 2 of the engine compartment can be connected to the front - end root cross - beam assembly 3, which can form an inner - side longitudinal dispersion force - transmission channel at the connection (for example, refer to Figure 2 the arrows extending in the up - down direction in it are used to indicate the inner - side longitudinal dispersion force - transmission channel). When a small - overlap collision occurs to the vehicle, the impact force can be dispersed to the rear longitudinal beam assembly 2 of the engine compartment and the front - end root cross - beam assembly 3.

[0073] According to some alternative embodiments of the present invention, with reference to Figures 1 - 3 and Figure 6 , the front bulkhead root crossbeam assembly 3 includes an upper front bulkhead crossbeam 31 and a crossbeam upper cover plate 32. The crossbeam upper cover plate 32 is disposed on the upper front bulkhead crossbeam 31. The upper front bulkhead crossbeam 31 is connected to the front end of the inner lower plate 41 of the A-pillar, and a Y-direction force transmission channel can be formed, which can transmit the impact force to the upper front bulkhead crossbeam 31 and the inner lower plate 41 of the A-pillar, and disperse the impact force. The crossbeam upper cover plate 32 is connected to the inner lower plate 41 of the A-pillar and the second reinforcing member 13 of the sill 11, and a Y-direction force transmission channel can be formed, which can transmit the impact force to the crossbeam upper cover plate 32, the inner lower plate 41 of the A-pillar, and the sill assembly 1, and disperse the impact force. For example, a first mounting hole 131 is formed on the inner side surface of the second reinforcing member 13. The first mounting hole 131 and the above-mentioned second mounting hole 132 are arranged at intervals in the front-rear direction of the second reinforcing member 13, and the crossbeam upper cover plate 32, the inner lower plate 41 of the A-pillar and the second reinforcing member 13 can be connected by fasteners.

[0074] Wherein, the formation of the first mounting hole 131 on the inner side surface of the second reinforcing member 13 means that the first mounting hole 131 is formed on the side surface of the second reinforcing member 13 close to the center of the vehicle body. For example, when the second reinforcing member 13 is the second reinforcing member 13 located at the left end of the vehicle body, the first mounting hole 131 is formed on the right side surface of the second reinforcing member 13; when the second reinforcing member 13 is the second reinforcing member 13 located at the right end of the vehicle body, the first mounting hole 131 is formed on the left side surface of the second reinforcing member 13.

[0075] For example, when a small offset collision occurs to the vehicle, the impact force received by the front bulkhead root crossbeam assembly 3 can be transmitted to the A-pillar assembly 4, and then transmitted to the sill assembly 1 through the A-pillar assembly 4, and a second X-direction force transmission channel can be formed (for example, with reference to Figure 2 the backward arrow located below in the up-down direction in

[0076] is used to indicate the second X-direction force transmission channel); the impact force received by the engine compartment rear longitudinal beam assembly 2 and the front bulkhead root crossbeam assembly 3 can be dispersed, and further the damage to the engine compartment rear longitudinal beam assembly 2 and the front bulkhead root crossbeam assembly 3 caused by the impact force can be reduced. Figure 2The first group of arrows extending in the left - right direction in the up - down direction is to schematically show the first Y - direction force - transmission channel); the rear section 24 of the longitudinal beam of the rear longitudinal beam assembly 2 of the engine compartment can be connected to the front - enclosure root cross - beam assembly 3. The rear longitudinal beam assembly 2 of the engine compartment can be connected to the upper cover plate 32 of the cross - beam of the front - enclosure root cross - beam assembly 3. The rear longitudinal beam assembly 2 of the engine compartment and the upper cover plate 32 of the cross - beam can form a triangular cavity, which can make the connection structure between the rear longitudinal beam assembly 2 of the engine compartment and the front - enclosure root cross - beam assembly 3 more stable. The rear longitudinal beam assembly 2 of the engine compartment, the upper cover plate 32 of the cross - beam, the sill 11 and the inner panel 41 of the lower A - pillar are connected in the Y - direction, and the above - mentioned second Y - direction force - transmission channel can be formed. When a vehicle has a small - offset collision, the impact force can be transmitted to the rear longitudinal beam assembly 2 of the engine compartment, the front - enclosure root cross - beam assembly 3, the inner panel of the A - pillar assembly 4 and the sill assembly 1 through the first Y - direction force - transmission channel and the second Y - direction force - transmission channel, so as to disperse the impact force of the small - offset collision, and thus protect the safety of vehicle occupants.

[0077] For example, the front - enclosure root cross - beam assembly 3 further includes an inner support plate 33 of the front - enclosure cross - beam and a lower plate 34 of the root cross - beam. The number of the inner support plates 33 of the front - enclosure cross - beam can be two. The two inner support plates 33 of the front - enclosure cross - beam are respectively disposed on the left and right ends of the upper cover plate 32 of the cross - beam. The inner support plate 33 of the front - enclosure cross - beam can be connected to the inner panel 41 of the lower A - pillar. The number of the lower plates 34 of the root cross - beam can be two. The two lower plates 34 of the root cross - beam can be connected to each other, and both of the two lower plates 34 of the root cross - beam can be connected to the middle part of the upper front - enclosure cross - beam 31.

[0078] According to some alternative embodiments of the present invention, referring to Figures 1 - 3 and Figure 8 , an extension part 321 extending backward is formed on the upper cover plate 32 of the cross - beam. The vehicle body frame 100 further includes a front - floor cross - beam 5. The front - floor cross - beam 5 has a connecting part 51. The connecting part 51 is stacked with the extension part 321, and the connecting part 51 is located inside the extension part 321. The extension part 321 is connected to the connecting part 51 and the inner panel 41 of the lower A - pillar, and a Y - direction force - transmission channel can be formed, which can transmit the impact force to the front - floor cross - beam 5, the upper cover plate 32 of the cross - beam and the inner panel 41 of the lower A - pillar, and disperse the impact force.

[0079] Among them, the connecting part 51 is located inside the extension part 321, which means that the connecting part 51 is located on the side of the extension part 321 close to the center of the vehicle body. For example, when the connecting part 51 of the front - floor cross - beam 5 and the extension part 321 of the upper cover plate 32 of the cross - beam are the connecting part 51 of the front - floor cross - beam 5 and the extension part 321 of the upper cover plate 32 of the cross - beam located at the left end of the vehicle body, the connecting part 51 is located on the right side of the extension part 321; when the connecting part 51 of the front - floor cross - beam 5 and the extension part 321 of the upper cover plate 32 of the cross - beam are the connecting part 51 of the front - floor cross - beam 5 and the extension part 321 of the upper cover plate 32 of the cross - beam located at the right end of the vehicle body, the connecting part 51 is located on the left side of the extension part 321.

[0080] For example, the extension 321 of the front floor crossmember 5 and the upper cover plate 32 of the crossmember are connected to the inner lower panel 41 of the A-pillar and the sill 11 in the Y direction, and a third Y-direction force transmission channel can be formed (for example, refer to Figure 2 In Figure 2 , the fourth set of arrows extending in the left-right direction along the up-down direction is used to indicate the third Y-direction force transmission channel). When a small-offset collision occurs to the vehicle, the impact force can be transmitted to the front floor crossmember 5, the front bulkhead root crossmember assembly 3, the A-pillar assembly 4, and the sill 11 through the third Y-direction force transmission channel, and the impact force of the small-offset collision can be dispersed, thereby protecting the safety of vehicle occupants.

[0081] According to some embodiments of the present invention, referring to Figures 1 - 8 , both the sill 11 and the second reinforcement 13 are made of aluminum alloy, which can reduce the weight of the sill 11 and the second reinforcement 13. The first reinforcement 12, the A-pillar assembly 4, the rear engine bay longitudinal beam assembly 2, and the front bulkhead root crossmember assembly 3 are all made of steel, which can reduce the costs of the first reinforcement 12, the A-pillar assembly 4, the rear engine bay longitudinal beam assembly 2, and the front bulkhead root crossmember assembly 3, and also enable the first reinforcement 12, the A-pillar assembly 4, the rear engine bay longitudinal beam assembly 2, and the front bulkhead root crossmember assembly 3 to have relatively high strength, thereby reducing the cost and weight of the vehicle body frame 100.

[0082] The vehicle according to the embodiment of the second aspect of the present invention includes the vehicle body frame 100 according to the above-mentioned first aspect embodiment of the present invention.

[0083] For example, the vehicle can be an electric vehicle.

[0084] For the vehicle according to the embodiment of the present invention, by providing the above-mentioned vehicle body frame 100, the connection strength between the A-pillar assembly 4, the rear engine bay longitudinal beam assembly 2, and the front bulkhead root crossmember assembly 3 and the sill assembly 1 can be increased, the overall rigidity of the connection area of the sill assembly 1 can be improved, and multiple force transmission channels can also be added to disperse the impact force, effectively controlling the intrusion amount when a small-offset collision occurs to the vehicle, reducing the tearing degree of the connection area of the sill assembly 1, and improving the safety of vehicle occupants.

[0085] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0086] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle body frame, characterized in that, Including: A sill assembly, the sill assembly including a sill and a first reinforcing member and a second reinforcing member provided at the front end of the sill, the second reinforcing member being located inside the first reinforcing member, and the sill, the first reinforcing member, and the second reinforcing member all being separately formed members; An A-pillar assembly, the lower end of the A-pillar assembly being connected to the sill assembly, the sill, the first reinforcing member, and the second reinforcing member all being connected to the A-pillar assembly, the A-pillar assembly including an A-pillar lower inner panel that at least covers the inner side surface of the sill, the A-pillar assembly further including a third reinforcing member having a hollow structure formed therein, the third reinforcing member being provided on the bottom surface of the A-pillar lower inner panel, and a notch extending in the front-rear direction being formed at the bottom of the sill, and the third reinforcing member being received in the notch; An engine compartment rear longitudinal beam assembly, the engine compartment rear longitudinal beam assembly being connected to both the A-pillar assembly and the sill assembly; A front bulkhead root crossbeam assembly, the front bulkhead root crossbeam assembly being connected to both the A-pillar assembly and the sill assembly, the front bulkhead root crossbeam assembly including a front bulkhead crossbeam inner support plate that is connected to the A-pillar lower inner panel.

2. The vehicle body frame according to claim 1, characterized in that, The lower end of the A-pillar assembly and the engine compartment rear longitudinal beam assembly jointly cover the front end of the sill assembly.

3. The vehicle body frame according to claim 2, wherein The A-pillar assembly includes an A-pillar reinforcing plate provided on the outer side of the A-pillar lower inner panel and at least covering the outer side surface of the sill, a hollow cavity being formed in the sill, the first reinforcing member being provided in the hollow cavity and connected to both the sill and the A-pillar reinforcing plate, and the second reinforcing member being provided on the upper surface of the sill and connected to both the sill and the A-pillar lower inner panel.

4. The vehicle body frame according to claim 3, characterized in that, Three layers of the hollow cavities are arranged in the up-down direction in the sill, the first reinforcing member being provided in the hollow cavity located in the middle in the up-down direction, and a first fastener being adapted to pass through the A-pillar reinforcing plate, the outer side wall of the sill, and the first reinforcing member.

5. The vehicle body frame according to claim 4, wherein In the up-down direction, the two upper layers of the hollow cavities each include a plurality of sub-hollow cavities arranged at intervals in the left-right direction, adjacent sub-hollow cavities being separated by a partition, the thickness range of the outer side walls of the two upper layers of the hollow cavities being 2 - 2.5 mm, the thickness range of the partition being 3 - 3.5 mm, and the thickness range of the inner side walls of the two upper layers of the hollow cavities being 4 - 4.5 mm.

6. The vehicle body frame according to claim 4, wherein A reinforcing rib plate is provided on the upper surface of the sill, the reinforcing rib plate being in the middle of the sill in the left-right direction and extending in the front-rear direction, and the second reinforcing member being located inside the reinforcing rib plate and extending in the front-rear direction.

7. The vehicle body frame according to claim 6, characterized in that, A hollow structure is formed in the second reinforcing member, and the cross-section of the second reinforcing member is in the shape of a "mouth".

8. The vehicle body frame according to claim 3, characterized in that The engine compartment rear longitudinal beam assembly at least covers at least part of the bottom surface of the sill, and the engine compartment rear longitudinal beam assembly is connected to the front side surface of the sill and the A-pillar assembly.

9. The vehicle body frame according to claim 8, wherein, The rear longitudinal beam assembly of the engine compartment includes a bottom connecting plate, a transverse support plate, a front connecting plate, and a rear section of the longitudinal beam. The bottom connecting plate extends in the left-right direction. The transverse support plate is disposed on the bottom connecting plate and connected to the third reinforcing member. A part of the bottom connecting plate covers the bottom surface of the sill and the bottom surface of the third reinforcing member. The bottom connecting plate is connected to the sill. The front connecting plate is disposed on the front side of the bottom connecting plate and connected to the transverse support plate. A part of the front connecting plate is located on the front side of the sill and connected to the sill. The rear section of the longitudinal beam is disposed on the bottom connecting plate and connected to the transverse support plate. The transverse support plate is connected between the sill and the rear section of the longitudinal beam.

10. The vehicle body frame according to claim 3, characterized in that, The front root crossbeam assembly of the vehicle body includes an upper front crossbeam and a crossbeam upper cover plate. The crossbeam upper cover plate is disposed on the upper front crossbeam. The upper front crossbeam is connected to the front end of the inner lower plate of the A-pillar. The crossbeam upper cover plate is connected to the inner lower plate of the A-pillar and the second reinforcing member.

11. The vehicle body frame according to claim 10, characterized in that, An extension portion extending rearward is formed on the crossbeam upper cover plate. The vehicle body frame further includes a front floor crossbeam. The front floor crossbeam has a connecting portion. The connecting portion is stacked with the extension portion and located inside the extension portion. The extension portion is connected to the connecting portion and the inner lower plate of the A-pillar.

12. The vehicle body frame according to any one of claims 1-11, characterized in that, Both the sill and the second reinforcing member are made of aluminum alloy. The first reinforcing member, the A-pillar assembly, the rear longitudinal beam assembly of the engine compartment, and the front root crossbeam assembly of the vehicle body are all made of steel.

13. A vehicle, characterized in that, Comprising: The vehicle body frame according to any one of claims 1-12.

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