Electric vehicle and front vehicle body structural member thereof

Abstract

An electric vehicle and a front vehicle body structural member thereof. The front vehicle body structural member (10) is connected between a front wall (1) and a floor panel (2) of the vehicle, is connected between a pair of sills (3) of the vehicle, and comprises: a front section (12), the front section (12) being provided with a pair of front longitudinal beam rear section connection ports (16) in a forward x-direction, and the front wall (1) being connected above the front section (12); and a rear section (14), the rear section (14) being provided with a cross-member connection port (18) in a reverse x-direction, and the cross-member connection port (18) extending continuously between the pair of sills (3) in a y direction. The rear section (14) is provided with a platform (20) in a forward z-direction; the platform (20) is located between the front longitudinal beam rear section connection ports (16) and the cross-member connection port (18), and is connected to the floor panel (2) by means of the cross-member connection port (18) so as to form an extension portion of the floor panel (2); and the front section (12) and the rear section (14) are integrally formed. The front vehicle body structural member (10) is highly integrated.

Description

Electric vehicles and their front body structures Technical Field

[0001] The present application belongs to the field of electric vehicle manufacturing and design, and specifically relates to an electric vehicle and its body-in-white, and more specifically, relates to a front body structure. Background Art

[0002] The body-in-white (BIW) of a vehicle accounts for approximately 30% to 40% of the vehicle's total mass, representing the largest proportion and the area with the greatest potential for lightweighting. With the trend toward intelligent vehicles, the vehicle's electrical and electronic architecture faces challenges. Consequently, the hardware supporting the E / E architecture has grown in size and the number of wiring harnesses has increased, requiring space within the vehicle to accommodate this hardware. The front engine compartment is a critical structural component of the vehicle body, carrying loads, absorbing energy, transmitting force, and connecting to other structural components.

[0003] Summary of the Invention

[0004] One aspect of the present application is to provide a front vehicle body structure connected between a front panel and a floor of a vehicle, and connected between a pair of vehicle door sills, the front vehicle body structure comprising:

[0005] A front section, wherein the front section is provided with a pair of front longitudinal beam rear section interfaces in the positive direction of the x-direction, and the front enclosure is connected to the upper portion of the front section; and

[0006] a rear section, wherein the rear section is provided with a crossbeam interface in the reverse direction of the x-direction, the crossbeam interface continuously extending between the pair of door sills in the y-direction; the rear section is provided with a platform in the positive direction of the z-direction, the platform being connected to the floor via the crossbeam interface and between the rear section interface of the front longitudinal beam to form an extended portion of the floor;

[0007] The front section and the rear section are integrally formed.

[0008] In one embodiment of the front vehicle body structure, the platform has a flat surface.

[0009] In an embodiment of the front vehicle body structure, the planar surface includes a central area and left and right areas on both sides of the central area, and the central area, the left area, and the right area are configured to house a central computing cluster and its wiring harness.

[0010] In one embodiment of the front vehicle body structure, the cross-beam interface is connected to the first reinforcement plate in a positive z-direction to form a cross-beam.

[0011] In one embodiment of the front vehicle body structure, the cross member extends along the left region, the central region, and the right region.

[0012] In one embodiment of the front vehicle body structure, the platform extends continuously in the y-direction between the pair of door sills.

[0013] In one embodiment of the front body structure, no central channel is provided on the platform.

[0014] In one embodiment of the front vehicle body structural member, the cross-beam interface has a cross-section in the y-direction, the cross-section has a bent shape, the bent shape has a plurality of upper flat surfaces in the positive z-direction and a plurality of lower flat surfaces in the negative z-direction, the upper flat surfaces and the lower flat surfaces being alternately connected to form the bent shape.

[0015] In one embodiment of the front vehicle body structure, the front section is provided with a double-layer reinforcement plate structure behind the interface of the rear section of the front longitudinal beam, and the double-layer reinforcement plate structure includes a second reinforcement plate, a third reinforcement plate, and a plurality of ribs connected between the second reinforcement plate and the third reinforcement plate, and the second reinforcement plate and the third reinforcement plate each have an arch shape in the xy plane.

[0016] In one embodiment of the front vehicle body structure, the plurality of ribs form at least a “W” shape between the second reinforcement plate and the third reinforcement plate.

[0017] In an embodiment of the front vehicle body structure, a plurality of ribs are distributed on a bottom portion of the front vehicle body structure to form at least one force transmission path.

[0018] In one embodiment of the front vehicle body structure, the force transmission path includes a first force transmission path, the plurality of ribs are arranged to disperse the force from the front longitudinal beam to the pair of door sills and the front end of the front section, a first portion of the plurality of ribs extends along the y-direction, and a second portion of the plurality of ribs is obliquely arranged between the interface of the rear section of the front longitudinal beam and the first portion.

[0019] In one embodiment of the front vehicle body structure, the force transmission path includes a second force transmission path, the plurality of ribs are arranged to bear lateral forces along the crossbeam, and a third portion of the plurality of ribs is arranged below the crossbeam interface along the y-direction.

[0020] In one embodiment of the front vehicle body structure, the force transmission path includes a third force transmission path, the plurality of ribs are arranged to withstand the force transmitted from the pair of door sills to the crossbeam, and a third portion of the plurality of ribs is arranged below the crossbeam interface along the y-direction.

[0021] In one embodiment of the front vehicle body structure, the force transmission path includes a fourth force transmission path, the plurality of ribs are arranged to transmit force from the front section to the rear section along the x-direction, and the fourth portion of the plurality of ribs includes a plurality of frame rib structures arranged in an array, each of the frame rib structures includes a first rectangular rib, a second rib within the rectangle extending along the x-direction, and a third rib within the rectangle that intersects the second rib in a diagonal manner.

[0022] In one embodiment of the front vehicle body structure, the force transmission path includes a fifth force transmission path, the plurality of ribs are arranged to transmit force from the front section to the pair of rockers, and a fifth portion of the plurality of ribs is diffusely and obliquely arranged between the front section and the pair of rockers.

[0023] In one embodiment of the front vehicle body structure, a pair of A-pillar inner panels are respectively connected between the front section and the side sill.

[0024] In one embodiment of the front vehicle body structural member, a plurality of ribs are arranged between the rear section interface of the front longitudinal beam and the A-pillar inner panel.

[0025] In one embodiment of the front body structure, a subframe mounting point and a battery mounting point are provided at the bottom of the front body structure, and the subframe is connected to the front body structure below the subframe mounting point by Y-direction bolts.

[0026] In one embodiment of the front vehicle body structure, the battery mounting point includes a block structure facing the Y-direction bolt, and the battery is connected behind the block structure.

[0027] In one embodiment of the front vehicle body structure, the front vehicle body structure is an aluminum casting.

[0028] This application provides a highly integrated, large-scale vehicle body structure. This structure includes a front section and a rear section, both of which are integrally formed. This structure is connected to the vehicle's front dash assembly, front longitudinal beams, door sills, floor, and A-pillar inner panels. This structure is located in the vehicle's front cabin.

[0029] The front section provides a connection interface for the front longitudinal beam and serves as an intermediate connector between the front longitudinal beam, subframe and vehicle body. The front section does not include the front panel assembly, which is connected separately to the top of the front section.

[0030] The rear section provides a connection interface for the crossbeam, and the rear section is also provided with a platform. The platform is connected to the floor via the crossbeam interface and becomes an extension of the floor. In existing vehicle bodies, the body structure of the front cabin is either a basic y-direction structure located below the front assembly to connect the front longitudinal beam and / or subframe, or the aforementioned basic y-direction structure with a small transition structure extending in the x-direction to connect the entire floor. Unlike most existing vehicle structures, the rear section of the front body structure of the present application forms a significant part of the floor. The floor assembly can be reduced accordingly. Hardware equipment can be arranged on the rear section.

[0031] The front vehicle body structure involved in this application is both a load-bearing structure and a strength structure of the vehicle. The crossbeam interface extends continuously in the y direction, and the crossbeam that passes through the y direction can be connected to the crossbeam interface.

[0032] The platform is used to house a large central computing cluster, so it is provided as a pure plane with no other structural members passing through it. Therefore, the crossbeam is a complete beam that does not cross or interfere with other structural members, thereby retaining the strength of the beam.

[0033] The rear section is not provided with a central tunnel, so there is no path for force to be transmitted from the center of the vehicle body along the central tunnel.

[0034] The present application is responsible for transmitting the forward or lateral forces through the arrangement of various forms of ribs, including setting ribs with a bent structure below the crossbeam interface to resist the transmission of y-direction forces; or setting ribs with an arched structure at the front end of the front section to disperse the forward force in the x-direction; or setting ribs at the bottom of the front body structure to disperse the force from the front longitudinal beam.

[0035] Since the central channel as a force transmission member is eliminated, the present invention distributes the force from the front longitudinal beam through the door sill and the bottom of the front body structure. The present invention provides multiple force transmission paths to achieve the force distribution goal.

[0036] This application also provides separate subframe and battery mounting points. The subframe mounting points allow impact forces from the subframe to be transmitted through the mounting points to the front body structure, where they are dispersed by the force transmission path of the front body structure, thereby preventing them from being transmitted to the battery. The battery mounting points are equipped with a block structure to cushion and disperse the significant impact forces that directly reach the battery mounting points. This application also reduces the distance between the subframe and battery mounting points.

[0037] The front vehicle body structural member involved in the present application is an integrated aluminum alloy die-casting, which simplifies multiple vehicle body parts and has reliable strength.

[0038] Another aspect of the present application is to provide an electric vehicle comprising the front body structure described in any of the aforementioned embodiments. Based on the various advantages of the aforementioned front body structure, the electric vehicle of the present application has multiple beneficial effects such as lightweight, high integration, and high strength.

[0039] Other aspects and features of the present application will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It should be understood, however, that the drawings are designed for illustrative purposes only and are not intended to limit the scope of the present application, as reference should be made to the appended claims. It should also be understood that the drawings are intended only to conceptually illustrate the structures and processes described herein and, unless otherwise indicated, are not necessarily drawn to scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present application will be more fully understood by referring to the following detailed description of specific embodiments in conjunction with the accompanying drawings, in which the same reference numerals throughout the drawings refer to the same elements.

[0041] FIG1 is a partial schematic diagram of an electric vehicle including an embodiment of a front body structure involved in the present application;

[0042] FIG2 is an exploded view of a portion of an electric vehicle including an embodiment of a front body structure involved in the present application;

[0043] FIG3 is an exploded view of a portion of an electric vehicle including an embodiment of a front body structure involved in the present application;

[0044] FIG4 is a schematic diagram of an embodiment of a front vehicle body structure according to the present application, viewed from one angle;

[0045] FIG5 is a schematic diagram of the front vehicle body structure in FIG4 viewed from another angle;

[0046] FIG6 is a top view of an embodiment of a front vehicle body structure involved in the present application;

[0047] FIG7 is a bottom view of the front vehicle body structure in FIG6;

[0048] FIG8 is a schematic diagram of a force transmission path of a front vehicle body structure according to an embodiment of the present application;

[0049] FIG9 is a schematic diagram of a force transmission path of a front vehicle body structure according to an embodiment of the present application;

[0050] FIG10 is a schematic diagram of a first force transmission path in the force transmission path shown in FIG9 ;

[0051] FIG11 is a schematic diagram of a second force transmission path in the force transmission path shown in FIG9 ;

[0052] FIG12 is a schematic diagram of a third force transmission path in the force transmission path shown in FIG9 ;

[0053] FIG13 is a schematic diagram of a fourth force transmission path in the force transmission path shown in FIG9;

[0054] FIG14 is a schematic diagram of a fifth force transmission path among the force transmission paths shown in FIG9 ;

[0055] FIG15 is a cross-sectional view of a cross-beam interface in an embodiment of a front vehicle body structure according to the present application; and

[0056] FIG16 is a cross-sectional view of an embodiment of the electric vehicle involved in the present application. DETAILED DESCRIPTION

[0057] In order to help those skilled in the art to accurately understand the subject matter for which protection is sought in this application, the specific implementation methods of this application are described in detail below with reference to the accompanying drawings.

[0058] Figure 1 is a partial schematic diagram of an electric vehicle including an embodiment of a front vehicle body structure according to the present application. Figure 1 illustrates the position of the front vehicle body structure relative to the electric vehicle. The darker portion in the figure represents the front vehicle body structure 10 according to the present application. Front vehicle body structure 10 is connected between a front panel 1 and a floor 2, and between a pair of side sills 3, 3. Front vehicle body structure 10 is a single-piece component.

[0059] FIG2 is a partial exploded view of an electric vehicle including an embodiment of a front vehicle body structure according to the present application. In the present application, the term "x" indicating a direction refers to the vehicle's travel direction, i.e., the front-to-back direction; "y" refers to the vehicle's width direction, i.e., the left-to-right direction; and "z" refers to the vehicle's height direction, i.e., the up-down direction. "x-positive" means the x-direction is facing forward, i.e., "x" in FIG2 + ", "x direction reverse" means x direction is backward, that is, "x - ", "z-direction positive" means z-direction upward, that is, "z + "Z direction reverse" means z direction downward, that is, "z - ”.

[0060] The front body structure 10 is connected to the front wall (assembly) 1, the front longitudinal beams 4, 4, the A-pillar (lower) inner panels 5, 5, the door sills 3, 3, the crossbeam 6, and the floor 2, respectively. As shown in Figure 3, the front body structure of the present application is connected to the front longitudinal beam in the positive x-direction by bolts and structural adhesive [I]. The front body structure of the present application is connected to the front wall above it by FDS (hot melt self-tapping) and SPR (self-piercing riveting) [II]. A portion of the front body structure of the present application is connected to the A-pillar (lower) inner panel and the door sill in the y-direction by FDS [III]. Another portion of the front body structure of the present application (near the end of the crossbeam) is connected to the door sill and the crossbeam in the y-direction by FDS and bolts [IV]. The front body structure of the present application is connected to the crossbeam in the reverse x-direction and the positive z-direction by SPR and structural adhesive [V]. Not shown in the figure, the front body structure of the present application is connected to the door sill in the reverse z-direction and the y-direction by FDS and structural adhesive or by bolts and structural adhesive.

[0061] Figures 4-5 are schematic diagrams of an embodiment of the front vehicle body structure of the present application, viewed from different angles. The front vehicle body structure 10 is an integrally formed aluminum casting and generally comprises a front section 12 and a rear section 14. The front section 12 has a structural member extending in the z-direction and transitions to a rear section 14 that extends substantially in the x-direction. The front section 12 is provided with a front longitudinal beam rear section interface 16 in the positive x-direction for connection to the front longitudinal beam. The rear section 14 is provided with a crossbeam interface 18 and a platform 20. The crossbeam interface 18 is located at the rear end of the rear section 14 and connects to the floor and crossbeam sections (not shown). The crossbeam interface 18 extends continuously in the y-direction. "Continuously extending" here means extending without interruption or without undulation. "Without undulation" means there are no significant height differences in the z-direction. The continuously extending crossbeam interface 18 creates an ideal interface environment for connecting the crossbeams. If the crossbeam interface does not extend continuously, the crossbeam connected to the crossbeam interface will not be straight, which is undesirable.

[0062] The platform 20 is connected to the floor (not shown) via the cross member interface 18. The platform 20 is located behind the front longitudinal member rear section interface 16 and in front of the cross member interface 18. The platform 20 has a generally flat surface and serves as an extension of the floor. That is, the majority of the rear section 14 including the platform 20 and the floor connected to the rear end of the rear section 14 together constitute the vehicle body floor.

[0063] The flat surface includes a central area 22 and left and right areas 24 and 26 on both sides of the central area 22. The central area 22 can be used to place a central computing cluster (CCC), and the left and right areas 24 and 26 are used to place wiring harnesses for the central computing cluster.

[0064] No central channel is arranged on the rear section 14. Since the central channel is cancelled, the crossbeam does not need to span the central channel and can therefore extend continuously in the y direction.

[0065] The crossbeam interface 18 connects the first reinforcing plate 28 in the positive z-direction to form the crossbeam 6. The crossbeam 6 extends continuously in the y-direction between the pair of door sills 3, 3, as shown in Figures 1-3. The crossbeam 6 extends substantially flat along the left region 24, the central region 22, and the right region 26.

[0066] In terms of strength, the design of the front body structure takes into account the x-direction forward collision, the y-direction (i.e., side collision), and the offset collision between the x-direction and the y-direction. The present application transmits and disperses the collision energy to a pair of door sills and crossbeams through multiple force transmission paths. Figures 6-7 show the top view and bottom view of the front body structure. Figures 8-9 show the force transmission paths designed on the front body structure. These force transmission paths are distributed above and below the front body structure, and more are below the front body structure, i.e., at the bottom. The plate structure, beam structure, and rib structure are used to realize the transmission of multiple force transmission paths to prevent the collision energy from invading the cockpit.

[0067] The following describes typical force transmission paths based on Figures 8-9. Figures 10-14 illustrate five force transmission paths. For illustration, the left side of these figures shows the direction of force, and the right side shows the ribs that guide this force.

[0068] The first force transmission path transfers force from the front longitudinal beam to the sill and distributes it along the center of the front section. Multiple ribs are arranged to disperse the force from the front longitudinal beam at the front end of the front section, transferring a portion to the sill, which is then borne by the sill beam, and distributing the remaining portion toward the center of the front section. For the latter, the ribs include a first portion 30 extending in the y-direction and a second portion 32 arranged obliquely between the interface of the rear section of the front longitudinal beam and the first portion 30 (see Figure 10).

[0069] The second force transmission path transmits the lateral force to the crossbeam. The third part 34 of the rib is arranged below the crossbeam interface and has a triangular wave structure to withstand the lateral force, as shown in Figure 11.

[0070] The third force transmission path redirects the force from the door sill to the crossbeam. When the vehicle experiences an offset collision and the front body structure deforms, the door sill and crossbeam are no longer perpendicular to each other, and the force on the door sill is redirected to the crossbeam. The third portion 34 of the rib, acting as a crossbeam reinforcement, also supports the forces along this force transmission path (see Figure 12).

[0071] The fourth force transmission path transfers the force from the front section to the rear section. The fourth rib portion 36 includes a plurality of frame rib structures 40 arranged in an array. The frame rib structure 40 comprises a rectangular first rib 42, a second rib 44 extending along the x-direction within the rectangle, and a third rib 46 intersecting the second rib 44 and forming a diagonal line within the rectangle (see Figure 13).

[0072] The fifth force transmission path transmits the force of the front section to the pair of door sills. The fifth portion 38 of the rib is arranged diffusely and obliquely between the front section and the door sills, as shown in FIG14 .

[0073] It should be understood that the force transmission paths are not limited to those described, depending on the direction of the external energy and the upstream force transmission structure.

[0074] There are also some structures and rib designs that disperse and transmit force. Figure 15 is a cross-sectional view of the crossbeam interface along AA in Figure 6. The crossbeam interface has a cross-section along the y-direction, and the cross-section has a bent shape 48. The bent shape 48 has multiple upper surfaces 50 in the positive z-direction and multiple lower surfaces 52 in the negative z-direction. The upper surfaces 50 and the lower surfaces 52 are alternately connected to form the bent shape 48, which is similar to a rectangular pulse shape. This design helps protect the front body structure from deformation under the impact of lateral force. The lateral force is perpendicular to the bent shape, as shown in the direction of penetration into the cross-section in Figure 15.

[0075] Returning to Figure 6, the front section features a double-layer reinforcement plate structure behind the interface with the rear section of the front longitudinal beam. This double-layer reinforcement plate structure includes a second reinforcement plate 54, a third reinforcement plate 56, and multiple ribs 58 connecting the second and third reinforcement plates 54, 56. The second and third reinforcement plates 54, 56 each have an arched shape in the xy plane, forming a roughly parallel, dual-track resistance structure. This arched structure helps dissipate the impact force from the vehicle's forward direction, preventing it from directly penetrating the vehicle.

[0076] A plurality of ribs 58 are arranged between the second reinforcing plate 54 and the third reinforcing plate 56 to connect the two and increase strength. These ribs 58 form a "W" shape in the center of the two plates.

[0077] Returning to Figure 2 , the front body structure 10 is connected to the A-pillar inner panels 5, 5 on both sides, and then to the side sills 3, 3 via the A-pillar inner panels 5, 5. As shown in Figure 5 , the front body structure 10 is provided with multiple horizontally extending ribs 60 at its front end, between the side portions (i.e., the A-pillar inner panels (not shown)) and the front longitudinal beam rear section interface 16. These ribs 60 can transfer forces from the front longitudinal beam to the A-pillar inner panels and then to the side sills.

[0078] Figure 16 is a cross-sectional view of the bottom portion of the front body structure involved in this application. The front body structure is provided with separate subframe mounting points 62 and battery mounting points 64 at its bottom portion. Subframe mounting points 62 are used to connect at least a portion of subframe 7 at this mounting point. Similarly, battery mounting points 64 are used to connect at least a portion of battery 8 at a corresponding mounting point.

[0079] The subframe 7 is connected to the front body structure below the subframe mounting point 62 via Y-bolts 66. Y-bolts 66 are, for example, M16 bolts. After impact force on the subframe 7 reaches below the mounting point, it is transferred upward via the Y-bolts to the front body structure, as indicated by the solid arrows in the figure. The impact force is then transferred along one or more of the multiple force transmission paths described above. This prevents the impact force from being transmitted from the subframe 7 to the battery 8, allowing for a close distance between the subframe mounting point 62 and the battery mounting point 64. The battery 8 is not involved in energy absorption, thus protecting it.

[0080] Battery 8 is located at the bottom of the vehicle and connected to the vehicle body via multiple mounting points. The front body structure is responsible for securing the front end of the battery. Battery mounting point 64 provides a bolt connection to the battery. Facing the subframe mounting point 64 and the y-direction bolt 66, battery mounting point 64 also includes a block structure 68, and battery 8 is connected to the rear of block structure 68. When the impact force on the subframe 7 is excessive, such as the huge energy generated at high speed is directly transferred to the battery mounting point 64, the block structure 68 can act as a buffer and transfer the force that has reached the battery mounting point 64 to the front body structure, as shown by the dotted arrow in the figure, to minimize the impact of energy on the battery and further protect the battery.

[0081] The front body structure involved in this application is a large one-piece casting with a high degree of integration, which eliminates the original body parts, such as the single-sided torsion box casting, the lower corner plate of the door sill, the ski board, etc., greatly reducing the bolt and glue connection process in the factory, reducing equipment investment and improving production efficiency.

[0082] The present application also relates to an electric vehicle comprising a front body structure according to any one of the above embodiments. The front body structure can be provided with pedals and seats via a height adapter to adapt to different vehicle models such as sedans or SUVs.

[0083] While specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it will be appreciated that the present application may be embodied in other ways without departing from such principles.

Claims

1. A front vehicle body structure connected between a front wall (1) and a floor (2) of a vehicle, and between a pair of door sills (3) of the vehicle, characterized in that include: A front section (12), wherein the front section (12) is provided with a pair of front longitudinal beam rear section interfaces (16) in the positive direction of the x-direction, and the front enclosure (1) is connected above the front section (12); and A rear section (14), wherein the rear section (14) is provided with a crossbeam interface (18) in the reverse direction of the x-direction, and the crossbeam interface (18) continuously extends between the pair of door sills (3) in the y-direction; and the rear section (14) is provided with a platform (20) in the positive direction of the z-direction, and the platform (20) is connected to the floor (2) via the crossbeam interface (18) between the rear section interface (16) of the front longitudinal beam and the crossbeam interface (18) to form an extended portion of the floor (2); The front section (12) and the rear section (14) are integrally formed.

2. The front vehicle body structure according to claim 1, characterized in that: The platform (20) has a flat surface; The flat surface includes a central area (22) and a left area (24) and a right area (26) on both sides of the central area (22), wherein the central area (22), the left area (24) and the right area (26) are configured to place a central computing cluster and its wiring harness; The crossbeam interface (18) is connected to the first reinforcing plate (28) in the positive direction of the z-direction to form a crossbeam (6); The cross beam (6) extends along the left region (24), the central region (22) and the right region (26).

3. The front vehicle body structure according to claim 1, characterized in that: The platform (20) extends continuously between the pair of door sills (3) in the y direction, and no central channel is arranged on the platform (20).

4. The front vehicle body structure according to claim 1, characterized in that: The cross-beam interface (18) has a cross-section along the y-direction, the cross-section has a bent shape (48), the bent shape (48) has a plurality of upper surfaces (50) in the positive direction of the z-direction and a plurality of lower surfaces (52) in the negative direction of the z-direction, the upper surfaces (50) and the lower surfaces (52) are alternately connected to form the bent shape (48).

5. The front vehicle body structure according to claim 1, characterized in that: The front section (12) is provided with a double-layer reinforcement plate structure behind the front longitudinal beam rear section interface (16), the double-layer reinforcement plate structure comprising a second reinforcement plate (54), a third reinforcement plate (56) and a plurality of ribs (58) connected between the second reinforcement plate (54) and the third reinforcement plate (56), the second reinforcement plate (54) and the third reinforcement plate (56) each having an arch shape on the xy plane; The plurality of ribs (58) at least form a "W" shape between the second reinforcing plate (54) and the third reinforcing plate (56).

6. The front vehicle body structure according to claim 2, characterized in that: A plurality of ribs are distributed at the bottom of the front vehicle body structure to form at least one of the following force transmission paths, wherein the force transmission path comprises: a first force transmission path, wherein the plurality of ribs are arranged to disperse the force from the front longitudinal beam to the pair of door sills and the front end of the front section, a first portion (30) of the plurality of ribs extends along the y direction, and a second portion (32) of the plurality of ribs is obliquely arranged between the interface of the rear section of the front longitudinal beam and the first portion (30); a second force transmission path or a third force transmission path, wherein the plurality of ribs are arranged along the crossbeam to bear lateral force or bear force transferred from the pair of door sills to the crossbeam, and a third portion (34) of the plurality of ribs is arranged below the crossbeam interface along the y direction; a fourth force transmission path, wherein the plurality of ribs are arranged to transmit force from the front section to the rear section along the x-direction, and a fourth portion (36) of the plurality of ribs comprises a plurality of frame rib structures (40) arranged in an array, each of the frame rib structures (40) comprising a rectangular first rib (42), A second rib (44) extending in the x-direction within the rectangle, and a third rib (46) within the rectangle and intersecting the second rib (44) in a diagonal manner; A fifth force transmission path, wherein the plurality of ribs are arranged to transmit force from the front section to the pair of door sills, and a fifth portion (38) of the plurality of ribs is diffusely and obliquely arranged between the front section and the pair of door sills.

7. The front vehicle body structure according to claim 1, characterized in that: A pair of A-pillar inner panels (5) are respectively connected between the front section (12) and the door sill (3); A plurality of ribs (60) are arranged between the front longitudinal beam rear section interface (16) and the A-pillar inner panel (5).

8. The front vehicle body structure according to claim 6, characterized in that: The front vehicle body structure is provided with a subframe mounting point (62) and a battery mounting point (64) at the bottom thereof, and the subframe (7) is connected to the front vehicle body structure below the subframe mounting point (62) via a Y-direction bolt (66).

9. The front vehicle body structure according to claim 8, characterized in that: The battery mounting point (64) includes a stopper structure (68) facing the y-direction bolt (66), and the battery (8) is connected behind the stopper structure (68).

10. The front vehicle body structure according to any one of claims 1 to 9, characterized in that: The front vehicle body structural component is an aluminum casting.

11. An electric vehicle, characterized in that It comprises a front vehicle body structure according to any one of claims 1-10.

Images