Vehicle body front structure and vehicle

Abstract

The embodiment of the invention provides a vehicle body front structure and a vehicle. The vehicle body front structure comprises a vehicle body and a front longitudinal beam, a column A, a doorsill beam and a force transmission piece which are arranged on the vehicle body, the force transmission piece comprises a first force transmission plate and a second force transmission plate, one end of the first force transmission plate is connected between the front longitudinal beam and the second force transmission plate, and the other end of the first force transmission plate is connected to the column A; the extension direction of the second force transmission plate is the same as the extension direction of the threshold beam, and therefore collision force can be transmitted to the A column and the second force transmission plate through the first force transmission plate, the force transmission path is increased, the force transmission efficiency is improved, the risk that a front longitudinal beam even a front vehicle cabin deforms is reduced, and the safety performance of the vehicle is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobiles, and in particular relates to a front structure of a vehicle body and a vehicle. Background Art

[0002] In recent years, in order to meet users' high endurance requirements for electric vehicles, the size of battery packs has continued to increase. When the battery pack is installed on the beam structure at the bottom of the vehicle body, the large-sized battery pack may cut off the front and rear force transmission path on the beam structure. At this time, if the front longitudinal beam of the vehicle is subjected to an external collision force, the collision force will be difficult to transmit to the rear of the vehicle through the beam structure, which may cause deformation of the front longitudinal beam or even the front cabin, leading to a safety accident.

[0003] At present, the collision force exerted on the front longitudinal beam can be transmitted to the rear of the vehicle through the rocker beam. However, the force transmission efficiency between the front longitudinal beam and the rocker beam in existing vehicles is low. Therefore, when the front of the vehicle is hit, the front longitudinal beam and even the front cabin may still be deformed by the collision. Summary of the invention

[0004] The front vehicle body structure and vehicle provided in the embodiments of the present application can reduce the risk of deformation of the front longitudinal beam and even the front cabin, thereby avoiding the occurrence of safety accidents.

[0005] On the one hand, an embodiment of the present application provides a front vehicle body structure, including a vehicle body main body and a front longitudinal beam, an A-pillar, a door sill beam and a force transmission member respectively arranged on the vehicle body main body, the force transmission member including a first force transmission plate and a second force transmission plate, one end of the first force transmission plate is connected between the front longitudinal beam and the second force transmission plate, and the other end is connected to the A-pillar, and the extension direction of the second force transmission plate is the same as the extension direction of the door sill beam.

[0006] According to one aspect of the present application, the front structure of the vehicle body also includes a front panel, the first force transmission plate includes a first sub-plate and a second sub-plate arranged on both sides of the first sub-plate along the extension direction of the A-pillar, the first sub-plate is spaced apart from the front panel, the second sub-plate is connected between the front panel and the first sub-plate, the first sub-plate, the second sub-plate and the front panel enclose a first energy absorption cavity, the first sub-plate is respectively connected to the A-pillar and the second force transmission plate, and the second sub-plate is connected to the front longitudinal beam.

[0007] According to one aspect of the present application, at least one second sub-panel includes a first wall portion and a second wall portion arranged on a side of the first wall portion away from the first sub-panel, the second wall portion is bent relative to the first wall portion and is in contact with the front panel, and the second wall portion is respectively connected to the front panel and the front longitudinal beam.

[0008] According to one aspect of the present application, the first energy absorbing cavity is trapezoidal in shape, and the distance between the two second sub-panels on one side close to the front panel is greater than the distance between the two second sub-panels on one side close to the first sub-panels.

[0009] According to one aspect of the present application, the first force transmission plate also includes a third sub-plate, the first sub-plate is connected to the A-pillar through the third sub-plate, the third sub-plate includes a third wall portion and a fourth wall portion arranged on a side of the third wall portion away from the first sub-plate, the fourth wall portion is bent relative to the third wall portion and fits the A-pillar, and the fourth wall portion is connected to the A-pillar.

[0010] According to one aspect of the present application, the front structure of the vehicle body also includes a reinforcement member arranged on the vehicle body body, the reinforcement member is arranged on the front panel and connected to the A-pillar, and the reinforcement member is connected to the second sub-panel on one side along the extension direction of the A-pillar.

[0011] According to one aspect of the present application, the reinforcement includes a reinforcement plate and a first connecting plate arranged around the circumference of the reinforcement plate, the first connecting plate is respectively connected to the A-pillar, the front panel and the second sub-panel, and the reinforcement plate is arched away from the front panel to form a second energy absorption cavity.

[0012] According to one aspect of the present application, a middle portion of the reinforcing plate along the extension direction of the A-pillar is recessed toward the front panel to form a concave rib, and the concave rib extends from a side close to the A-pillar to a side away from the A-pillar.

[0013] According to one aspect of the present application, a center plane of the reinforcement along the extension direction of the A-pillar is coplanar with a center plane of the front longitudinal beam along the extension direction of the A-pillar.

[0014] According to one aspect of the present application, the front structure of the vehicle body further includes a first cross beam arranged on the vehicle body main body, and the first cross beam is respectively connected to the door sill beam and the second force transmission plate.

[0015] According to one aspect of the present application, an angle α between an extension direction of the first force transmission plate and an extension direction of the front longitudinal beam satisfies: 135°≤α≤150°.

[0016] According to one aspect of the present application, a projection of the front longitudinal beam on the vehicle body along a first direction at least partially overlaps with a projection of the second force transmission plate on the vehicle body along the first direction, and the first direction is an extension direction of the sill beam.

[0017] According to one aspect of the present application, the front structure of the vehicle body also includes a torsion box arranged on a side of the vehicle body where the front longitudinal beam is provided, and the torsion box is respectively connected to the front longitudinal beam and the A-pillar; the torsion box includes a box body having a force transmission cavity and a support member arranged in the force transmission cavity, and the force transmission cavity includes at least two sub-cavities separated by the support member.

[0018] According to one aspect of the present application, the front structure of the vehicle body also includes a second connecting plate, the vehicle body is provided with an intermediate beam extending along a first direction, one end of the second connecting plate is connected to the torsion box, and the other end is connected to the intermediate beam, the first direction is the extension direction of the sill beam, and the angle β between the extension direction of the second connecting plate and the extension direction of the front longitudinal beam satisfies: 135°≤β≤150°.

[0019] According to one aspect of the present application, the support member includes a first support plate, the first support plate includes a fourth sub-plate and a fifth sub-plate connected to each other, the fourth sub-plate is attached to the vehicle body and connected to the A-pillar, the fifth sub-plate is bent relative to the fourth sub-plate and is spaced apart from the A-pillar, and the fifth sub-plate is connected to the bottom wall of the box body.

[0020] According to one aspect of the present application, the support member further includes a second support plate, which is spaced apart from the bottom wall of the box body, and the second support plate is respectively connected to the side wall of the box body and the fifth sub-plate.

[0021] According to one aspect of the present application, the side wall of the box body includes a first sub-wall, the first sub-wall is located on a side of the box body away from the front longitudinal beam along a first direction, and the first sub-wall extends along a second direction, and the first direction is perpendicular to the second direction.

[0022] On the other hand, an embodiment of the present application also provides a vehicle, comprising any of the above vehicle body front structures.

[0023] The embodiment of the present application provides a vehicle body front structure and a vehicle. The vehicle body front structure includes a vehicle body, and a front longitudinal beam, an A-pillar, a door sill beam and a force transmission member respectively arranged on the vehicle body, and the force transmission member includes a first force transmission plate and a second force transmission plate, one end of the first force transmission plate is connected between the front longitudinal beam and the second force transmission plate, and the other end is connected to the A-pillar, and the extension direction of the second force transmission plate is the same as the extension direction of the door sill beam, therefore, the collision force can be transmitted to the A-pillar and the second force transmission plate respectively through the first force transmission plate, thereby increasing the force transmission path, improving the force transmission efficiency, reducing the risk of deformation of the front longitudinal beam and even the front cabin, and improving the safety performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a vehicle body front structure provided by some embodiments of the present application;

[0025] Figure 2 is another structural schematic diagram of the front structure of the vehicle body provided by some embodiments of the present application;

[0026] Figure 3 is a partial enlarged view of a front structure of a vehicle body provided in some embodiments of the present application after being cut at a force transmission member;

[0027] Figure 4 is a top view of a vehicle body front structure provided by some embodiments of the present application;

[0028] Figure 5 is a bottom view of a vehicle body front structure provided by some embodiments of the present application;

[0029] Figure 6is a structural schematic diagram of a front structure of a vehicle body provided by some embodiments of the present application from another perspective;

[0030] Figure 7 is another bottom view of the front structure of the vehicle body provided by some embodiments of the present application;

[0031] Figure 8 is a top view of a front structure of a vehicle body provided in some embodiments of the present application after removing the vehicle body main body;

[0032] Fig. 9 is another structural schematic diagram of a vehicle body front structure provided by some embodiments of the present application;

[0033] Fig.10 yes Figure 7 AA section view in;

[0034] Fig.11 is another structural schematic diagram of a vehicle body front structure provided by some embodiments of the present application after the vehicle body main body is removed;

[0035] Fig.12 is another bottom view of the front structure of the vehicle body provided by some embodiments of the present application;

[0036] Fig.13 yes Fig.12 BB section view in.

[0037] Description of Figure Numbers:

[0038] The vehicle body 100; the front longitudinal beam 101; the A-pillar 102; the door sill beam 103; the force transmission member 104; the first cross beam 105; the first force transmission plate 106; the first sub-plate 106a; the second sub-plate 106b; the first energy absorption cavity 106c; the third sub-plate 106d; the second force transmission plate 107; the second cross beam 108; the reinforcement member 109; the reinforcement plate 109a; the first connecting plate 109b; the concave rib 109c; the torque box 110; the second connecting plate 111; the middle beam 112; the front cross beam 113; the force transmission cavity 114; the box body 115; the support member 116; the first supporting plate 117; the fourth sub-plate 118; the fifth sub-plate 119; the second supporting plate 120; the bottom wall 121; the first sub-wall 122; the front wall 123; the battery pack 200;

[0039] First direction X; second direction Y. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0042] Figure 1 is a schematic structural diagram of a vehicle body front structure provided by some embodiments of the present application, Figure 2 This is another schematic diagram of the structure of the front part of the vehicle body provided in some embodiments of the present application.

[0043] like Figure 1 and Figure 2 As shown, on the one hand, an embodiment of the present application provides a front vehicle body structure, including a vehicle body 100 and a front longitudinal beam 101, an A-pillar 102, a door sill beam 103 and a force transmission member 104 respectively arranged on the vehicle body 100, the force transmission member 104 includes a first force transmission plate 106 and a second force transmission plate 107, one end of the first force transmission plate 106 is connected between the front longitudinal beam 101 and the second force transmission plate 107, and the other end is connected to the A-pillar 102, and the extension direction of the second force transmission plate 107 is the same as the extension direction of the door sill beam 103.

[0044] The vehicle body 100 includes a floor and a front panel connected to the floor, and a front longitudinal beam 101 and a force transmission member 104 can be connected to the front panel. The front longitudinal beam 101 is located on one side of the vehicle body 100 along the first direction X. The number of the front longitudinal beams 101 can be two, and the two front longitudinal beams 101 are arranged at intervals along the second direction Y. The front longitudinal beam 101 can extend along the first direction X, and can be used to absorb external collision force when the vehicle is hit; the front longitudinal beam 101 can be connected to the threshold beam 103 through a structure such as a torsion box to transmit force to the threshold beam 103. The A-pillar 102 is arranged on the side of the floor of the vehicle body 100 along the second direction Y. Optionally, the A-pillar 102 is respectively arranged on both sides of the floor along the second direction Y. The sill beam 103 is arranged on the side of the floor of the vehicle body 100 along the second direction Y. Optionally, the sill beams 103 are respectively arranged on both sides of the floor along the second direction Y. The sill beam 103 extends along the first direction X toward the side away from the front longitudinal beam 101, that is, the sill beam 103 extends toward the rear of the vehicle along the first direction X, so that the collision force can be transmitted to the rear of the vehicle.

[0045] Specifically, the front longitudinal beam 101, the first force transmission plate 106 and the second force transmission plate 107 are connected in sequence along the first direction X. Therefore, the external collision force exerted on the front longitudinal beam 101 can be decomposed into two parts. One part is transmitted to the A-pillar 102 by the first force transmission plate 106 and then transmitted to the sill beam 103 through the A-pillar 102, and the other part is transmitted to the second force transmission plate 107, thereby increasing the force transmission path.

[0046] It can be understood that since the structural strength of the A-pillar 102 is usually better than that of the first cross beam 105, the first force transfer plate 106 is provided to be connected between the front longitudinal beam 101 and the second force transfer plate 107. The collision force on the front longitudinal beam 101 can be first transmitted to the first force transfer plate 106, and the remaining part of the collision force after being transmitted by the first force transfer plate 106 can be transmitted to the second force transfer plate 107, thereby reducing the risk of deformation of the second force transfer plate 107.

[0047] The embodiment of the present application provides a front structure of the vehicle body, in which one end of the first force transmission plate 106 is connected between the front longitudinal beam 101 and the second force transmission plate 107, and the other end is connected to the A-pillar 102, and the extension direction of the second force transmission plate 107 is the same as the extension direction of the door sill beam 103, and both can extend along the first direction X. Therefore, the collision force can be transmitted to the A-pillar 102 and the second force transmission plate 107 respectively through the first force transmission plate 106, thereby increasing the force transmission path and improving the force transmission efficiency, so as to reduce the risk of deformation of the front longitudinal beam 101 and even the front cabin, and improve the safety performance of the vehicle. In addition, in this embodiment, the collision force of the front longitudinal beam 101 is transmitted to the A-pillar 102 through the force transmission member 104, and then the collision force is transmitted to the door sill beam 103 through the A-pillar 102. In this process, the force transmission member 104 and the A-pillar 102 can absorb the collision force to a certain extent, thereby reducing the magnitude of the collision force transmitted to the door sill beam 103.

[0048] It should be clarified that in the present embodiment, the collision force received by the front longitudinal beam 101 is transmitted to the A-pillar 102 via the first force transmission plate 106. Therefore, when the vehicle has a small offset collision, the collision force can be used to resist the invasion of the chassis and tires of the vehicle, thereby preventing the chassis and tires from penetrating the front structure of the vehicle body and invading the front cabin due to a small offset collision.

[0049] It can be understood that in the embodiment of the present application, the first direction X and the second direction Y are arranged to intersect, and preferably the first direction X and the second direction Y are perpendicular to each other; the first direction X can be the length direction of the vehicle body 100, and correspondingly, the second direction Y can be the width direction of the vehicle body 100.

[0050] Optionally, the second force transmission plate 107 may be a ski plate, a side of which close to the front longitudinal beam 101 is bent relative to the vehicle body 100 .

[0051] Optionally, the number of force transmission members 104 corresponds to the number of front longitudinal beams 101, and they are connected to the front longitudinal beams 101 in a one-to-one correspondence. Specifically, one force transmission member 104 is connected between one front longitudinal beam 101 and an A-pillar 102, and another force transmission member 104 is connected between another front longitudinal beam 101 and another A-pillar 102, so as to ensure the force transmission effect between the front longitudinal beam 101 and the A-pillar 102.

[0052] Figure 3 is a partial enlarged view of a front structure of a vehicle body provided in some embodiments of the present application after being cut at a force transmission member;

[0053] like Figure 2 As shown, according to one aspect of the present application, the front structure of the vehicle body also includes a front panel 123, the first force transmission plate 106 includes a first sub-plate 106a and a second sub-plate 106b arranged on both sides of the first sub-plate 106a along the extension direction of the A-pillar 102, the first sub-plate 106a is spaced apart from the front panel 123, the second sub-plate 106b is connected between the front panel 123 and the first sub-plate 106a, the first sub-plate 106a, the second sub-plate 106b and the front panel 123 enclose a first energy absorption cavity 106c, the first sub-plate 106a is respectively connected to the A-pillar 102 and the second force transmission plate 107, and the second sub-plate 106b is connected to the front longitudinal beam 101.

[0054] The extension direction of the A-pillar 102 is the height direction of the vehicle on which the A-pillar 102 is installed. The first force transmission plate 106 is arranged on the front panel 123. Specifically, the first sub-plate 106a can be directly connected to the A-pillar 102, or indirectly connected through other structures. The second sub-plate 106b is located between the first sub-plate 106a and the front panel 123, and can be connected to the first sub-plate 106a and the front panel 123 respectively. For example, the second sub-plate 106b can be connected to the first sub-plate 106a or the front panel 123 by connecting methods such as structural adhesive and fastening bolts. The connection method between the first sub-plate 106a and the second sub-plate 106b can be the same as the connection method between the second sub-plate 106b and the front panel 123, or it can be different. Optionally, the first sub-plate 106a and the second sub-plate 106b can be integrated. The second sub-plate 106b is connected to the front longitudinal beam 101. Therefore, when the front longitudinal beam 101 is subjected to an external collision, the collision force thereon can be transmitted to the second sub-plate 106b, and then transmitted to the A-pillar 102 and the second force transmission plate 107 respectively through the first sub-plate 106a.

[0055] In this embodiment, the first sub-panel 106a, the second sub-panel 106b and the front panel 123 can enclose a first energy absorption cavity 106c, thereby absorbing the collision force on the front longitudinal beam 101 to a certain extent, and preventing the front longitudinal beam 101 and even the front cabin from being crushed.

[0056] It can be understood that the first force transmission plate 106 is disposed on the front panel 123 , and therefore the front panel 123 can also absorb the external collision force exerted on the front longitudinal beam 101 to a certain extent.

[0057] According to one aspect of the present application, at least one second sub-panel 106b includes a first wall portion and a second wall portion arranged on a side of the first wall portion away from the first sub-panel 106a, the second wall portion is bent relative to the first wall portion and is in contact with the front panel 123, and the second wall portion is respectively connected to the front panel 123 and the front longitudinal beam 101.

[0058] The first wall portion is located between the first sub-plate 106a and the front panel 123, and the second wall portion is bent relative to the first wall portion. Therefore, the second wall portion can fit with the front panel 123, thereby increasing the connection area with the front panel 123 and improving the structural stability of the two.

[0059] According to one aspect of the present application, the first energy absorbing cavity 106c is trapezoidal, and the distance between the two second sub-panels 106b close to the front panel 123 is greater than the distance between the two second sub-panels 106a close to the first sub-panels 106a.

[0060] The first energy absorption cavity 106c is arranged in a trapezoidal shape, that is, at least one of the two second sub-plates 106b is arranged at an inclination relative to the direction perpendicular to the first sub-plate 106a. Specifically, the distance between the two sides of the second sub-plates 106b close to the front panel 123 is greater than the distance between the two sides close to the first sub-plate 106a, that is, the top surface of the trapezoidal first energy absorption cavity 106c is close to the first sub-plate 106a, and the bottom surface thereof is close to the front panel 123.

[0061] In this embodiment, by setting the first energy absorption cavity 106c to be trapezoidal, and the distance between the two second sub-panels 106b on the side close to the front panel 123 is greater than the distance between the two sides close to the first sub-panels 106a, the ability of the first energy absorption cavity 106c to absorb collision force can be improved compared to setting the first energy absorption cavity 106c to be square or other shapes.

[0062] Please continue to refer to Figure 3 According to one aspect of the present application, the first force transmission plate 106 also includes a third sub-plate 106d, the first sub-plate 106a is connected to the A-pillar 102 through the third sub-plate 106d, the third sub-plate 106d includes a third wall portion and a fourth wall portion arranged on a side of the third wall portion away from the first sub-plate 106a, the fourth wall portion is bent relative to the third wall portion and is in contact with the A-pillar 102, and the fourth wall portion is connected to the A-pillar 102.

[0063] The first sub-plate 106a is indirectly connected to the A-pillar 102 through the third sub-plate 106d. Specifically, the third wall portion is connected to the first sub-plate 106a, the fourth wall portion is located on the side of the third wall portion away from the first sub-plate 106a, the fourth wall portion is bent relative to the third wall portion, and is in contact with the A-pillar 102, thereby increasing the connection area with the A-pillar 102 and improving the connection strength with the A-pillar 102. It can be understood that when the front longitudinal beam 101 is subjected to an external collision, the collision force transmitted to the first sub-plate 106a can be transmitted to the A-pillar 102 via the third wall portion and the fourth wall portion in sequence.

[0064] Optionally, the third wall portion may be inclined relative to a direction perpendicular to the first sub-plate 106 a , so that the collision force transmitted thereto may be decomposed to a certain extent by the third wall portion, thereby reducing the collision force transmitted to the A-pillar 102 via the fourth wall portion.

[0065] Optionally, the third wall portion and / or the fourth wall portion may be connected to the second sub-plate 106b, so that the first sub-plate 106a may directly transmit force to the third sub-plate 106d, thereby improving the force transmission efficiency.

[0066] Please continue to refer to Figure 1 , Figure 2 and Figure 3 According to one aspect of the present application, the front structure of the vehicle body also includes a reinforcement 109 arranged on the vehicle body 100, the reinforcement 109 is arranged on the front panel 123 and connected to the A-pillar 102, and the reinforcement 109 is connected to the second sub-panel 106b along one side of the extension direction of the A-pillar 102.

[0067] It can be understood that when the first force transfer plate 106 is arranged on the front panel 123 of the vehicle body 100, since the first force transfer plate 106 has a certain thickness, there will be a cavity below the first force transfer plate 106 and between the front panel 123 or the floor. At this time, a reinforcement 109 is arranged at the cavity so that the reinforcement 109 abuts against the first force transfer plate 106. When the collision force on the front longitudinal beam 101 is transmitted to the first force transfer plate 106, the collision force can be decomposed into three parts, wherein the first part of the collision force is directly transmitted to the A-pillar 102 by the first force transfer plate 106, the second part of the collision force is transmitted to the second force transfer plate 107 by the first force transfer plate 106, and the third part of the collision force is transmitted to the reinforcement 109 by the first force transfer plate 106, and then transmitted to the A-pillar 102 through the reinforcement 109, thereby reducing the force transmission burden of the first force transfer plate 106 and reducing the possibility of the first force transfer plate 106 being crushed and deformed.

[0068] Optionally, the reinforcement 109 is connected to the second sub-plate 106b on one side along the extension direction of the A-pillar 102, and the two can abut against each other, or can be connected in other ways, thereby improving the structural strength of the first force transmission plate 106 and reducing the risk of it being crushed due to collision force.

[0069] Optionally, the side of the reinforcement member 109 away from the first force transmission plate 106 may abut against the front panel 123, or may abut against the floor of the vehicle body 100, which is not specifically limited here. Optionally, the reinforcement member 109 may be a plate-shaped structure, or the reinforcement member 109 may also be a block-shaped structure. The actual structural shape of the reinforcement member 109 may be determined according to the actual application, which is not specifically limited here.

[0070] Please continue to refer to Figure 3 According to one aspect of the present application, the reinforcement 109 includes a reinforcement plate 109a and a first connecting plate 109b arranged around the circumference of the reinforcement plate 109a, the first connecting plate 109b is respectively connected to the A-pillar 102, the front panel 123 and the second sub-panel 106b, and the reinforcement plate 109a is arched away from the front panel 123 to form a second energy absorption cavity, so that the collision force is absorbed by the second energy absorption cavity.

[0071] Optionally, the first connecting plate 109b may be connected to the front panel 123 along the circumference of the reinforcing plate 109a, and the side of the first connecting plate 109b close to the second sub-plate 106b may be connected to the second sub-plate 106b, and after the first connecting plate 109b is connected to the front panel 123, its edge may be extended to be closely attached to and connected to the A-pillar 102, in which case the second energy absorption cavity may be formed by the reinforcing plate 109a and the front panel 123. Optionally, a portion of the first connecting plate 109b is respectively connected to the front panel 123 and the second sub-plate 106b, and the other portion is extended to be closely attached to and connected to the A-pillar 102, in which case the second energy absorption cavity may be formed by the A-pillar 102, the front panel 123 and the reinforcing plate 109a.

[0072] According to one aspect of the present application, the reinforcing plate 109a is recessed in the middle of the extension direction of the A-pillar 102 toward the front panel 123 to form a concave rib 109c, and the concave rib 109c extends from the side close to the A-pillar 102 to the side away from the A-pillar 102, which can further improve the structural strength of the reinforcement 109 and improve the ability to absorb collision force.

[0073] According to one aspect of the present application, a center plane of the reinforcement 109 along the extension direction of the A-pillar 102 is coplanar with a center plane of the front longitudinal beam 101 along the extension direction of the A-pillar 102 .

[0074] The center plane of the reinforcement 109 along the extension direction of the A-pillar 102 refers to the horizontal plane where the midpoint of the reinforcement 109 along the extension direction of the A-pillar 102 is located, and correspondingly, the center plane of the front longitudinal beam 101 along the extension direction of the A-pillar 102 refers to the horizontal plane where the midpoint of the front longitudinal beam 101 along the extension direction of the A-pillar 102 is located. It can be understood that the extension direction of the A-pillar 102 can be the height direction of the vehicle.

[0075] In this embodiment, the center plane of the reinforcement 109 along the extension direction of the A-pillar 102 is coplanar with the center plane of the front longitudinal beam 101 along the extension direction of the A-pillar 102. Therefore, the reinforcement 109 and the front longitudinal beam 101 are located at the same height in the extension direction of the A-pillar 102, which is beneficial to improving the force transmission effect of the reinforcement 109 compared to the case where the reinforcement 109 and the front longitudinal beam 101 are staggered in the extension direction of the A-pillar 102.

[0076] Please continue to refer to Figure 1 According to one aspect of the present application, the front structure of the vehicle body further includes a first cross beam 105 disposed on the vehicle body 100 , and the first cross beam 105 is respectively connected to the sill beam 103 and the second force transmission plate 107 .

[0077] The first cross beam 105 may be disposed on the floor of the vehicle body 100 and extend in the width direction of the vehicle. Specifically, the first cross beam 105 may be connected to the end of the second force transmission plate 107 away from the front longitudinal beam 101, so when the front longitudinal beam 101 is subjected to an external collision force, the collision force on the second force transmission plate 107 may be transmitted to the first cross beam 105. In addition, since the first cross beam 105 is connected to the sill beam 103, the first cross beam 105 may be optionally connected to the sill beam 103 on at least one side of the vehicle body 100 along the second direction Y, so when the collision force is transmitted to the first cross beam 105, the first cross beam 105 may further transmit the collision force to the sill beam 103, and transmit it to the rear of the vehicle through the sill beam 103.

[0078] In this embodiment, the collision force on the second force transmission plate 107 is transmitted to the first cross beam 105, and then transmitted to the rocker beam 103 through the first cross beam 105, and finally transmitted to the rear of the vehicle, thereby reducing the risk of the front longitudinal beam 101 and even the front cabin being crushed. In addition, during the force transmission process, the first cross beam 105 can also absorb the collision force to a certain extent, thereby reducing the magnitude of the collision force transmitted to the rocker beam 103.

[0079] According to one aspect of the present application, an angle α between an extension direction of the first force transmission plate 106 and an extension direction of the front longitudinal beam 101 satisfies: 135°≤α≤150°.

[0080] Specifically, the angle α can be any value within the above range, such as 135°, 140°, 145°, and 150°. In this embodiment, by reasonably setting the angle α between the extension direction of the first force transmission plate 106 and the extension direction of the front longitudinal beam 101, the force transmission efficiency of the front longitudinal beam 101 transmitting the collision force to the A-pillar 102 through the first force transmission plate 106 can be improved, the structural strength of the first force transmission plate 106 can be improved, and the risk of the first force transmission plate 106 being crushed during the force transmission process can be reduced.

[0081] According to one aspect of the present application, a projection of the front longitudinal beam 101 on the vehicle body 100 along a first direction X at least partially overlaps with a projection of the second force transfer plate 107 on the vehicle body 100 along the first direction X, and the first direction X is an extension direction of the sill beam 103 .

[0082] Specifically, the projection of the front longitudinal beam 101 on the vehicle body 100 along the first direction X is the projection of the front longitudinal beam 101 on the front panel along the first direction X, and the projection of the second force transfer plate 107 on the vehicle body 100 along the first direction X is the projection of the second force transfer plate 107 on the front panel along the first direction X.

[0083] In this embodiment, the projection of the front longitudinal beam 101 along the first direction X on the vehicle body 100 is arranged to at least partially overlap with the projection of the second force transfer plate 107 along the first direction X on the vehicle body 100, and preferably the two projections completely overlap, so that the front longitudinal beam 101 and the second force transfer plate 107 can be located in the same straight line in the first direction X, so as to improve the force transmission efficiency of the front longitudinal beam 101 to transmit the collision force to the first cross beam 105 through the second force transfer plate 107.

[0084] Figure 4 It is a top view of the front structure of the vehicle body provided in some embodiments of the present application.

[0085] like Figure 4 As shown, according to one aspect of the present application, the front structure of the vehicle body further includes a second cross beam 108 , which is located between the second force transmission plate 107 and the A-pillar 102 , and is connected to the second force transmission plate 107 and the A-pillar 102 , respectively.

[0086] The second cross beam 108 is parallel to the first cross beam 105 , and the second cross beam 108 extends along the second direction Y. Specifically, the second cross beam 108 is located between the second force transmission plate 107 and the A-pillar 102 , and is connected to the second force transmission plate 107 and the A-pillar 102 , respectively, which can improve the structural strength of the second force transmission plate 107 and reduce the risk of the second force transmission plate 107 being crushed.

[0087] Optionally, the second cross beam 108 can be respectively connected to the A-pillars 102 on both sides of the vehicle body 100 along the second direction Y. In this case, the second cross beam 108 can be respectively provided on both sides of the second force transfer plate 107 along the second direction Y, thereby further improving the structural strength of the second force transfer plate 107.

[0088] Figure 5 is a bottom view of a vehicle body front structure provided by some embodiments of the present application, Figure 6 It is a structural schematic diagram of the front structure of the vehicle body from another perspective provided in some embodiments of the present application.

[0089] like Figure 5 and Figure 6 As shown, according to one aspect of the present application, the front structure of the vehicle body further includes a torsion box 110 disposed on one side of the vehicle body 100 where the front longitudinal beam 101 is disposed, and the torsion box 110 is respectively connected to the front longitudinal beam 101 and the A-pillar 102 .

[0090] The torque box 110 is used to connect and transmit force between the front longitudinal beam 101 and the A-pillar 102. Specifically, the torque box 110 is located on the side of the vehicle body 100 where the front longitudinal beam 101 is provided, that is, the torque box 110 is located on the outer side of the vehicle body 100 away from the front cabin; the torque box 110 can be located under the floor of the vehicle body 100 and connected between the front longitudinal beam 101 and the A-pillar 102.

[0091] In this embodiment, a torsion box 110 is provided on one side of the vehicle body 100 where the front longitudinal beam 101 is provided, and the front longitudinal beam 101 and the A-pillar 102 are connected through the torsion box 110. When the front longitudinal beam 101 is subjected to an external collision force, a part of the external collision force can be transmitted to the A-pillar 102 through the torsion box 110, and then transmitted to the sill beam 103 through the A-pillar 102, so that the collision force on the front longitudinal beam 101 is shared by the torsion box 110 and the force transmission member 104, thereby alleviating the force transmission burden of the force transmission member 104 and reducing the possibility of the force transmission member 104 being crushed by the collision force.

[0092] Figure 7 is another bottom view of the front structure of the vehicle body provided by some embodiments of the present application, Figure 8 It is a top view of the front structure of the vehicle body provided in some embodiments of the present application after the vehicle body main body is removed.

[0093] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, according to one aspect of the present application, the front structure of the vehicle body also includes a second connecting plate 111, and the vehicle body 100 is provided with an intermediate beam 112 extending along a first direction X. One end of the second connecting plate 111 is connected to the torsion box 110, and the other end is connected to the intermediate beam 112. The first direction X is the extension direction of the sill beam 103.

[0094] The middle beam 112 may be formed by the floor of the vehicle body 100 protruding along the extension direction of the A-pillar 102, and specifically, may be formed by the side of the floor away from the front cabin protruding toward the extension direction of the A-pillar 102, and is located in the middle of the floor along the second direction Y, and extends toward the rear of the vehicle along the first direction X. Optionally, one end of the middle beam 112 away from the front longitudinal beam 101 along the first direction X may extend to the first cross beam 105 and be connected to the first cross beam 105. Optionally, a central channel for force transmission may be formed inside the middle beam 112.

[0095] The second connecting plate 111 may be disposed close to the dash panel of the vehicle body 100, and may be located at the lower side of the dash panel along the extension direction Z of the A-pillar 102. Optionally, the second connecting plate 111 may pass through the dash panel and be connected to the middle beam 112, or the middle beam 112 may pass through the dash panel and be connected to the second connecting plate 111.

[0096] In this embodiment, a middle beam 112 is formed on the floor of the vehicle body 100, and the middle beam 112 is connected to the torsion box 110 through the second connecting plate 111. When part of the collision force on the front longitudinal beam 101 is transmitted to the torsion box 110, part of the collision force on the torsion box 110 can be transmitted to the middle beam 112 through the second connecting plate 111, and then transmitted to the rear of the vehicle or to the first cross beam 105 through the middle beam 112, thereby alleviating the burden of the torsion box 110 transmitting force to the A-pillar 102 and reducing the risk of the torsion box 110 being crushed.

[0097] According to one aspect of the present application, an angle β between an extension direction of the second connecting plate 111 and an extension direction of the front longitudinal beam 101 satisfies: 135°≤β≤150°.

[0098] Optionally, the angle β between the extension direction of the second connecting plate 111 and the extension direction of the front longitudinal beam 101 may be any value within the above range, such as 135°, 140°, 145°, and 150°.

[0099] In this embodiment, by reasonably setting the angle between the extension direction of the second connecting plate 111 and the extension direction of the front longitudinal beam 101, it is beneficial to improve the force transmission effect when the torsion box 110 transmits the collision force to the second connecting plate 111, and improve the force transmission efficiency of the second connecting plate 111.

[0100] Fig. 9This is another structural schematic diagram of the front structure of the vehicle body provided in some embodiments of the present application.

[0101] like Fig. 9 As shown, optionally, the front structure of the vehicle body also includes a front cross beam 113, and the front cross beam 113 is arranged on the side of the vehicle body 100 connected to the front longitudinal beam 101, that is, the front cross beam 113 is arranged on the side of the front panel of the vehicle body 100 away from the front cabin; the front cross beam 113 extends along the second direction Y and is connected between the two front longitudinal beams 101, so that the front cross beam 113 can provide lateral support between the two front longitudinal beams 101 to avoid deflection and instability of the vehicle after the front longitudinal beam 101 is deformed by collision.

[0102] Optionally, the front cross beam 113 and the second connecting plate 111 are connected to each other, thereby improving the structural stability between the front cross beam 113 and the second connecting plate 111 .

[0103] Fig.10 yes Figure 7 AA section view in.

[0104] like Fig.10 As shown, according to one aspect of the present application, the torsion box 110 includes a box body 115 having a force transmission cavity 114 and a support member 116 disposed in the force transmission cavity 114 , and the force transmission cavity 114 includes at least two sub-cavities separated by the support member 116 .

[0105] Optionally, the box body 115 can be surrounded by a bottom wall 121 and a side wall connected to the bottom wall 121 to form a hollow force transmission cavity 114. In the box body 115, force transmission is achieved through the force transmission cavity 114, which can reduce the weight of the box body 115 while ensuring the force transmission effect, thereby reducing the weight of the entire vehicle.

[0106] In this embodiment, the support member 116 is disposed in the force transmission cavity 114 of the box body 115, which can divide the force transmission cavity 114 into at least two sub-cavities and support the box body 115 between the sub-cavities, thereby improving the structural strength of the box body 115 and reducing the risk of the box body 115 being crushed during the force transmission process.

[0107] Please continue to refer to Fig.10 According to one aspect of the present application, the support member 116 includes a first support plate 117, the first support plate 117 includes a fourth sub-plate 118 and a fifth sub-plate 119 connected to each other, the fourth sub-plate 118 is attached to the vehicle body 100 and connected to the A-pillar 102, the fifth sub-plate 119 is bent relative to the fourth sub-plate 118 and is spaced apart from the A-pillar 102, and the fifth sub-plate 119 is connected to the bottom wall 121 of the box body 115.

[0108] The first support plate 117 is used to support the box body 115 in the force transmission cavity 114. Specifically, the first support plate 117 includes a fourth sub-plate 118 and a fifth sub-plate 119 connected to each other, wherein the fourth sub-plate 118 is fitted with the vehicle body 100, thereby improving the structural stability of the fourth sub-plate 118, and the fourth sub-plate 118 is connected to the A-pillar 102, thereby transmitting the collision force from the front longitudinal beam 101 in the torsion box 110 to the A-pillar 102. The fifth sub-plate 119 is bent relative to the fourth sub-plate 118 and is spaced from the A-pillar 102. The fifth sub-plate 119 is connected to the bottom wall 121 of the box body 115, thereby dividing the force transmission cavity 114 into two sub-cavities, and the box body 115 is supported between the two sub-cavities by the fifth sub-plate 119, thereby improving the structural strength of the box body 115.

[0109] Please continue to refer to Fig.10 According to one aspect of the present application, the support member 116 also includes a second support plate 120, which is spaced apart from a bottom wall 121 of the box body 115, and the second support plate 120 is respectively connected to the side wall of the box body 115 and the fifth sub-plate 119.

[0110] In this embodiment, the second support plate 120 is spaced apart from the bottom wall 121 of the box body 115, and the second support plate 120 is respectively connected to the side wall of the box body 115 and the fifth sub-plate 119, so that the force transmission cavity 114 can be further divided into three sub-cavities through the second support plate 120 to further improve the structural strength of the box body 115.

[0111] Fig.11 This is another structural schematic diagram of the front structure of the vehicle body provided in some embodiments of the present application after the vehicle body main body is removed.

[0112] like Fig.11 As shown, according to one aspect of the present application, the side wall of the box body 115 includes a first sub-wall 122, which is located on a side of the box body 115 away from the front longitudinal beam 101 along a first direction X, and the first sub-wall 122 extends along a second direction Y, and the first direction X is perpendicular to the second direction Y.

[0113] It can be understood that the battery pack 200 can be arranged on the side of the torsion box 110 away from the front longitudinal beam 101 along the first direction X. Therefore, in the embodiment of the present application, the side wall of the box body 115 is arranged to include a first sub-wall 122 located on the side of the box body 115 away from the front longitudinal beam 101 along the first direction X, and the first sub-wall 122 extends along the second direction Y. Therefore, the sill beam 103 extending along the first direction X and the first sub-wall 122 extending along the second direction Y can intersect with each other, and preferably the two are perpendicular to each other, so that the side of the torsion box 110 away from the front longitudinal beam 101 along the first direction X can have a larger space to accommodate a larger battery pack 200, so as to improve the vehicle's endurance.

[0114] Optionally, the side wall of the box body 115 may also include a second sub-wall and a third sub-wall respectively connected to both ends of the first sub-wall 122, the second sub-wall and the third sub-wall are respectively connected to the front longitudinal beam 101, and the first sub-wall 122 and the second sub-wall are also respectively connected to the A-pillar 102.

[0115] Optionally, the third sub-wall can extend along the first direction X, wherein the side of the third sub-wall along the second direction Y away from the A-pillar 102 can be aligned with the side of the second force transfer plate 107 along the second direction Y away from the A-pillar 102, and the side of the first sub-wall 122 along the first direction X away from the front longitudinal beam 101 can be aligned with the side of the second cross beam 108 along the first direction X away from the front longitudinal beam 101, so that the torsion box 110 can be supported to a certain extent by the second force transfer plate 107 and the second cross beam 108, thereby improving the structural strength of the torsion box 110.

[0116] Fig.12 is another bottom view of the front structure of the vehicle body provided by some embodiments of the present application, Fig.13 yes Fig.12 BB section view in.

[0117] like Fig.12 and Fig.13As shown, optionally, the battery pack 200 can be connected to the side of the bottom wall 121 of the torsion box 110 away from the front longitudinal beam 101. Specifically, the battery pack 200 can be connected to the bottom wall 121 of the torsion box 110 by fasteners such as bolts. At this time, the first sub-wall 122 of the torsion box 110 can be attached to the side wall of the box body of the battery pack 200. Therefore, the collision force from the front longitudinal beam 101 on the torsion box 110 can also be transmitted to the box body of the battery pack 200, and then transmitted to the rear of the vehicle through the box body of the battery pack 200. It can be understood that in the front structure of the vehicle body, most of the collision force on the front longitudinal beam 101 can be transmitted to the sill beam 103 through the force transmission member 104, the torsion box 110, the A-pillar 102 and other structures, and then transmitted to the rear of the vehicle through the sill beam 103. Therefore, the collision force transmitted from the torsion box 110 to the box body of the battery pack 200 is small, which can avoid causing deformation of the battery pack 200.

[0118] On the other hand, the embodiment of the present application also provides a vehicle, including any of the above vehicle body front structures. Therefore, the vehicle provided by the embodiment of the present application has the technical effects of the technical solution of the vehicle body front structure in any of the above embodiments, and the explanation of the structures and terms that are the same or corresponding to the above embodiments will not be repeated here.

[0119] The embodiment of the present application provides a vehicle front structure and a vehicle. The vehicle front structure includes a vehicle body 100 and a front longitudinal beam 101, an A-pillar 102, a door sill beam 103 and a force transmission member 104 respectively arranged on the vehicle body 100. The force transmission member 104 includes a first force transmission plate 106 and a second force transmission plate 107. One end of the first force transmission plate 106 is connected between the front longitudinal beam 101 and the second force transmission plate 107, and the other end is connected to the A-pillar 102. The extension direction of the second force transmission plate 107 is the same as the extension direction of the door sill beam 103. Therefore, the collision force can be transmitted to the A-pillar 102 and the second force transmission plate 107 respectively through the first force transmission plate 106, thereby increasing the force transmission path and improving the force transmission efficiency, so as to reduce the risk of deformation of the front longitudinal beam 101 and even the front cabin, and improve the safety performance of the vehicle.

[0120] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A vehicle body front structure, characterized in that: It includes a vehicle body, and a front longitudinal beam, an A-pillar, a door sill beam and a force transmission member respectively arranged on the vehicle body. The force transmission member includes a first force transmission plate and a second force transmission plate, one end of the first force transmission plate is connected between the front longitudinal beam and the second force transmission plate, and the other end is connected to the A-pillar, and the extension direction of the second force transmission plate is the same as the extension direction of the door sill beam.

2. The vehicle body front structure according to claim 1, characterized in that: The front structure of the vehicle body also includes a front panel, the first force transmission plate includes a first sub-plate and second sub-plates arranged on both sides of the first sub-plate along the extension direction of the A-pillar, the first sub-plate is spaced apart from the front panel, the second sub-plate is connected between the front panel and the first sub-plate, the first sub-plate, the second sub-plate and the front panel together form a first energy absorption cavity, the first sub-plate is respectively connected to the A-pillar and the second force transmission plate, and the second sub-plate is connected to the front longitudinal beam.

3. The vehicle body front structure according to claim 2, characterized in that: At least one of the second sub-plates includes a first wall portion and a second wall portion arranged on a side of the first wall portion away from the first sub-plate, the second wall portion is bent relative to the first wall portion and is in contact with the front panel, and the second wall portion is respectively connected to the front panel and the front longitudinal beam.

4. The vehicle body front structure according to claim 2, characterized in that: The first energy absorbing cavity is trapezoidal in shape, and the distance between two sides of the second sub-panels close to the front panel is greater than the distance between two sides close to the first sub-panels.

5. The vehicle body front structure according to claim 2, characterized in that: The first force transmission plate also includes a third sub-plate, the first sub-plate is connected to the A-pillar through the third sub-plate, the third sub-plate includes a third wall portion and a fourth wall portion arranged on a side of the third wall portion away from the first sub-plate, the fourth wall portion is bent relative to the third wall portion and fits the A-pillar, and the fourth wall portion is connected to the A-pillar.

6. The vehicle body front structure according to claim 2, characterized in that: The vehicle body front structure further includes a reinforcement member disposed on the vehicle body main body, the reinforcement member is disposed on the front panel and connected to the A-pillar, and the reinforcement member is connected to the second sub-panel along one side of the extension direction of the A-pillar.

7. The vehicle body front structure according to claim 6, characterized in that: The reinforcement member includes a reinforcement plate and a first connecting plate arranged around the circumference of the reinforcement plate, the first connecting plate is respectively connected to the A-pillar, the front panel and the second sub-panel, and the reinforcement plate is arched away from the front panel to form a second energy absorption cavity.

8. The vehicle body front structure according to claim 7, characterized in that: The reinforcing plate is concavely provided in the middle part along the extension direction of the A-pillar toward the front wall plate to form a concave rib, and the concave rib extends from a side close to the A-pillar to a side away from the A-pillar.

9. The vehicle body front structure according to claim 6, characterized in that: A central plane of the reinforcement along the extending direction of the A-pillar is coplanar with a central plane of the front longitudinal beam along the extending direction of the A-pillar.

10. The vehicle body front structure according to claim 1, characterized in that: The vehicle body front structure further includes a first cross beam arranged on the vehicle body main body, and the first cross beam is respectively connected to the door sill beam and the second force transmission plate.

11. The vehicle body front structure according to claim 1, characterized in that: An included angle α between an extending direction of the first force transmission plate and an extending direction of the front longitudinal beam satisfies: 135°≤α≤150°.

12. The vehicle body front structure according to claim 1, characterized in that: A projection of the front longitudinal beam on the vehicle body along a first direction at least partially overlaps with a projection of the second force transmission plate on the vehicle body along the first direction, and the first direction is an extension direction of the sill beam.

13. The vehicle body front structure according to claim 1, characterized in that: The front structure of the vehicle body further includes a torsion box, which is respectively connected to the front longitudinal beam and the A-pillar; The torsion box comprises a box body having a force transmission cavity and a support member arranged in the force transmission cavity, and the force transmission cavity comprises at least two sub-cavities separated by the support member.

14. The vehicle body front structure according to claim 13, characterized in that: The front structure of the vehicle body further includes a second connecting plate, the vehicle body is provided with a middle beam extending along the first direction, one end of the second connecting plate is connected to the torsion box, and the other end is connected to the middle beam, and the first direction is the extension direction of the sill beam; An included angle β between an extending direction of the second connecting plate and an extending direction of the front longitudinal beam satisfies: 135°≤β≤150°.

15. The vehicle body front structure according to claim 13, characterized in that: The support member includes a first support plate, the first support plate includes a fourth sub-plate and a fifth sub-plate connected to each other, the fourth sub-plate is fitted with the vehicle body and connected to the A-pillar, the fifth sub-plate is bent relative to the fourth sub-plate and is spaced apart from the A-pillar, and the fifth sub-plate is connected to the bottom wall of the box body.

16. The vehicle body front structure according to claim 15, characterized in that: The support member further includes a second support plate, the second support plate is spaced apart from the bottom wall of the box body, and the second support plate is respectively connected to the side wall of the box body and the fifth sub-plate.

17. The vehicle body front structure according to claim 13, characterized in that: The side wall of the box body includes a first sub-wall, the first sub-wall is located at a side of the box body away from the front longitudinal beam along a first direction, and the first sub-wall extends along a second direction, and the first direction is perpendicular to the second direction.

18. A vehicle, characterized in that: It comprises the vehicle body front structure as claimed in any one of claims 1 to 17.

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