CN109204495B - Vehicle body structure and vehicle - Google Patents

Abstract

The present disclosure relates to a body structure and a vehicle. The vehicle body structure includes a front cross member and two front longitudinal members spaced apart in the left-right direction, the rear end of the front longitudinal member extends to the front cross member, and the front cross member is integrally formed with the two front longitudinal members. Through the above technical solutions, the strength and stability of the body structure during a front collision can be effectively improved, so that the safety performance of the vehicle is higher.

Description

Body structure and vehicle

technical field

The present disclosure relates to a body structure, and also to a vehicle having the body structure.

Background technique

Minimizing occupant fatalities and injuries in traffic (collision) accidents of vehicles (especially passenger cars) is the core design technology of vehicle development and manufacturing. Among them, the design of the collision safety deformation structure of the body structure is the basis for improving the collision safety performance of the whole vehicle. In order to meet the public's higher and higher collision safety requirements for domestic passenger vehicles, in recent years, the relevant departments of various countries have gradually improved and supplemented the collision safety of some passenger vehicles in their respective national laws and evaluation norms. performance test conditions. For example, the United States is updating its series of regulations and evaluation specifications on safety crash performance for vehicles sold in its domestic market, requiring body member compartments to withstand greater crash forces and have relatively small deformations under more operating conditions.

With the popularity of domestic passenger vehicles in the global market, the shortage of petrochemical energy and environmental protection problems caused by combustion are becoming more and more serious, so all countries are actively developing new energy vehicles. As a direction of new energy vehicles, electric vehicles are becoming a future trend. In addition to satisfying the traditional design, the design of electric vehicles also needs to consider the design of higher cruising range to meet the competitiveness with traditional fuel vehicles.

In addition, with the rapid development of electric vehicles in recent years, in order to increase the cruising distance, electric vehicles need to be equipped with more energy storage batteries, so compared with the same specifications of fuel vehicles, electric vehicles have to greatly increase the weight of the whole vehicle, which As a result, under the same test conditions, the kinetic energy of the entire vehicle increases in the early stage of the collision, that is to say, the body structure of the electric vehicle needs to be able to bear more force and absorb more motion energy to improve safety. Further, in electric vehicles, due to the need to arrange energy storage battery packs, a large amount of space under the body is occupied, and various classic body collision safety structure technologies of traditional fuel vehicles cannot be used. It is imperative to develop a new body structure technology that can meet the safety requirements of vehicles.

SUMMARY OF THE INVENTION

An object of the present disclosure is to provide a vehicle body structure with higher strength.

In order to achieve the above object, the present disclosure provides a vehicle body structure, comprising a front cross member and two front longitudinal members spaced apart in the left-right direction, the rear end of the front longitudinal member extends to the front cross member, and the front cross member is connected to the front cross member. The two front longitudinal beams are integrally formed.

Optionally, the distance between the orthographic projection of the front end of the front longitudinal beam on the horizontal plane and the orthographic projection of the rear end of the front longitudinal beam on the horizontal plane in the left-right direction is not greater than 80mm.

Optionally, the vehicle body structure further includes an inner connecting plate, the inner connecting plate is arranged on the inner side of the front longitudinal beam, and the inner connecting plate is integrally formed with the front longitudinal beam and the front cross beam.

Optionally, the body structure further includes a front cabin beam, the front cabin beam is arranged in front of the front beam at intervals, the front cabin beam and the two front longitudinal beams are integrally formed, and the front cabin beam, all the The two front longitudinal beams and the front cross beam form a closed-loop structure.

Optionally, the front cabin cross member is located forward of the cowl and at least partially directly behind the powerplant of the vehicle.

Optionally, the front cross member is located below the floor panel, and the vehicle body structure further includes two rocker inner panels located on the left and right sides of the floor panel, and the rocker inner panels are integrally formed with the front cross member.

Optionally, the rocker inner panel protrudes forward from the front cross member, and the distance between the front end of the rocker inner panel and the front cross member in the front-rear direction is less than 1000 mm.

Optionally, the vehicle body structure further includes an outer connecting plate, the outer connecting plate is arranged on the outer side of the front longitudinal member, and the outer connecting plate is connected with the front longitudinal member, the front cross member and the rocker. The plate is integrally formed.

Optionally, the vehicle body structure further includes two reinforcing longitudinal beams and at least one reinforcing cross beam spaced along the left-right direction, the reinforcing cross beams are integrally formed with the two reinforcing longitudinal beams, and each reinforcing longitudinal beam is formed with a corresponding reinforcing beam. The inner panel of the door sill is integrally formed, and the reinforcing beam is located behind the front beam.

Optionally, the reinforcing beam and the two reinforcing longitudinal beams are located above the floor panel.

Optionally, the at least one reinforcing beam includes two reinforcing beams that are parallel to each other and spaced in the front-rear direction, and the two reinforcing beams and the two reinforcing longitudinal beams form a closed-loop structure.

Optionally, the reinforcing beam is a front seat installation beam.

Optionally, the body structure further includes two body rails spaced in the left-right direction, the body rails are located below the floor panel, and the vehicle body rails are integrally formed with the front cross member and extend from the front side member. A cross member extends rearward, and the length of the body rail is greater than the length of the rocker inner panel.

Optionally, the body rail is integrally formed with the rocker inner panel.

Optionally, the vehicle body structure further includes a floor rear cross member, the floor rear cross member is integrally formed with the two body longitudinal members, the floor rear cross member is located behind the front cross member, and the rear The ends protrude rearwardly of the floor rear cross member.

Optionally, the front beam is a battery pack front mounting beam, the floor rear beam is a battery pack rear mounting beam, and the body longitudinal beam is a battery pack mounting beam.

Optionally, the vehicle body structure further includes a rear seat mounting beam, and the rear seat mounting beam and the vehicle body longitudinal beam are integrally formed.

Through the above technical solutions, the strength and stability of the body structure during a front collision can be effectively improved, so that the safety performance of the vehicle is higher.

The present disclosure also provides a vehicle including the vehicle body structure as described above.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification, and together with the following detailed description, are used to explain the present disclosure, but not to limit the present disclosure. In the attached image:

1 is a bottom perspective perspective view of a partial structure of a vehicle body structure provided by the present disclosure, wherein a front longitudinal member, a front cabin cross member, a front cross member, a cowl panel and a floor panel are shown;

FIG. 2 is a top-view perspective view of a vehicle body structure provided by the present disclosure;

3 is a bottom perspective perspective view of a vehicle body structure provided by the present disclosure;

FIG. 4 is a top-view perspective view of another vehicle body structure provided by the present disclosure;

FIG. 5 is a bottom-view perspective view of another vehicle body structure provided by the present disclosure.

Detailed ways

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

In the present disclosure, unless otherwise stated, the directional words used such as "up, down, left, right, front, rear" are defined on the basis of the up-down, left-right, and front-rear directions of the vehicle, Specifically in the drawings, the X direction is the front and rear direction of the vehicle, that is, the longitudinal direction of the vehicle, wherein the side pointed by the arrow is "front", and the opposite is "rear"; the Y direction is the left and right direction of the vehicle, that is, the vehicle's Horizontal direction, in which the side pointed by the arrow is "right", otherwise it is "left"; the Z direction is the up and down direction of the vehicle, that is, the height direction of the vehicle, in which the side pointed by the arrow is "up", otherwise "" "Down"; "inside and outside" are defined based on the contour of the corresponding component, for example, the inside and outside of the vehicle are defined based on the contour of the vehicle, and the side close to the middle of the vehicle is "inside", otherwise it is "outside". The above definitions are only used to assist in explaining the present disclosure, and should not be construed as limiting the present disclosure.

All "cross members" in this disclosure refer to beams extending generally in the left-right direction of the vehicle, and all "side members" refer to beams extending generally in the front-rear direction of the vehicle. In addition, in the absence of other special explanations, the "front panel", "floor panel", "door sill inner panel", "front crash beam", "rear crash beam", etc. involved in the various embodiments of the present disclosure The meanings of nouns are their commonly known meanings in the art.

The present disclosure provides a vehicle body structure, which may include two front side members 100, a front cross member 210, and a floor panel 300 spaced apart in the left-right direction, as shown in FIGS. 1 to 5 . The front cross member 210 and the two front longitudinal members 100 are integrally formed. The front end of the front longitudinal beam 210 may be connected with the front crash beam or integrally formed with the front crash beam.

A dash panel 320 is connected to the front end of the floor panel 300 , and a passenger compartment of the vehicle is defined behind the dash panel 320 and above the floor panel 300 .

In one embodiment, the front cross member 210 is fixed to the lower surface of the floor panel 300 and the rear end of the front side member 100 extends to the front cross member 210, that is, the front side member 100 stops at the front cross member 210, so that when the vehicle has a frontal collision A support for the rear end of the front longitudinal beam 100 is formed, thereby dispersing the collision impact force transmitted by the front longitudinal beam 100 and preventing the rear section of the front longitudinal beam 100 from deforming and invading the passenger compartment. The front cross member 210 may be positioned adjacent to the dash panel 320. Moreover, the fixed connection of the front cross member 210 to the lower surface of the floor panel 300 can strengthen the floor panel 300 and avoid excessive deformation of the floor panel 300 during collisions (including frontal collision (front collision) and side collision (side collision)). Folding, etc. squeeze the space in the passenger compartment. In some embodiments below, when the front beam 210 is formed as a battery pack front mounting beam for installing a battery pack, the front beam 210 is arranged in front of the battery pack to absorb impact energy and reduce the impact of the impact force on the battery pack. Squeeze, protect the battery pack. Of course, in other embodiments, the front cross member 210 may also be located in the front cabin according to design requirements.

The interior of the front cross member 210 may be integrally formed with a reinforcing structure (for example, a reinforcing rib, a reinforcing rib or a reinforcing plate, etc.) to further improve the ability of the front cross member 210 to withstand impact and reduce the amount of deformation of the front cross member 210 in a collision.

As shown in FIGS. 1 to 5 , a front cabin beam 220 may also be formed between the two front longitudinal beams 100 . The front cabin beam 220 is integrally formed with the two front longitudinal beams 100 , and the front cabin beam 220 is disposed on the front coaming plate 320 . The front panel 320 can be connected to the front panel 320 to stop the front elements of the vehicle from moving rearward, and can also play a role in strengthening the front panel 320, so that the front panel 320 is not easily deformed by collision. In addition, the front cabin cross member 220, the two front longitudinal members 100, and the front cross member 210 can form a closed-loop frame structure, so that the body structure of this part has a higher strength and can withstand a large initial collision load and the impact of the front part of the vehicle. It can also use the front cabin beam 220 and the front beam 210 to transmit force, reduce the deformation of the front of the vehicle, and protect the occupants and vehicle elements such as battery packs disposed behind the front beam 210.

By integrally forming the front cabin beam 220 and the front longitudinal beam 100, the bonding strength of the front cabin beam 220 and the front longitudinal beam 100 can be improved, thereby ensuring that the front cabin beam 220 can better withstand the power device (such as a motor or an engine) of the vehicle. 's impact.

The front side member 100 is formed with a concave point along the envelope of the front wheel for avoiding the front wheel. In order to prevent the front side member 100 from bending at the inner concave point when the vehicle is in a frontal collision, intruding into the front panel 320 or squeezing other components located at the front of the vehicle, the front cabin cross member 220 can be formed inside the front side member 100 At the concave point, a support for the front longitudinal beam 100 is formed to prevent the front longitudinal beam 100 from being bent.

In one embodiment, the distance between the orthographic projection of the front end of the front side member 100 on the horizontal plane and the orthographic projection of the rear end of the front side member 100 on the horizontal plane in the left-right direction is no greater than 80 mm. That is to say, the projection of the front end of the front side member 100 along the Z direction on the horizontal plane and the projection of the rear end of the front side member 100 along the Z direction on the horizontal plane are not more than 80 mm along the Y direction, so that the front side member 100 is as far as possible Close to straight beam, so as to achieve better force transmission effect.

As shown in FIGS. 2 to 5 , the front longitudinal member 100 may have a main body section 100A and a downwardly curved section 100B formed at the rear end of the main body section 100A, and the front cabin beam 220 may be formed at the downwardly curved sections of the two front longitudinal members 100 . 100B, and at least partially below the main body section 100A. Wherein, the main body section 100A of the front side member is generally higher than the position of the floor panel 300 of the vehicle occupant compartment, and the transition in the vertical direction of the front side member is realized by the downward bending section. Among them, the main body section 100A is relatively high and can be used for vehicle power devices such as motors and engines. These vehicle powerplants are typically located at least partially below the main body section 100A.

In this way, in the event of a frontal collision, the collapse of the front longitudinal member 100 drives the vehicle elements installed on the main body section 100A to move rearward, and the front cabin cross member 220 installed on the downward curved section 100B is only partially located below the main body section. The rearward moving vehicle elements, such as vehicle power devices such as electric motors, can be stopped to prevent them from intruding into the vehicle cabin due to collision impact, thereby protecting occupants.

Specifically, the main body section 100A is provided with a mounting point for installing the subframe, the power unit of the vehicle is mounted on the main body section 100A through the subframe, and is at least partially disposed below the main body section 100A and the front cabin beam 220 . Forward, so that the front cabin cross member 220 can stop the power unit from moving backwards and threaten the passenger compartment in the event of a forward collision. In order to ensure that the forward cabin beam 220 is below the main body section 100A, the forward cabin beam 220 is located at least partially at the bottom of the downwardly curved section 100B.

The sill inner panel 500 is arranged on the left and right sides of the floor panel 300, the front end of the sill inner panel 500 can extend forward from the front beam 210, and the distance between the front end of the sill inner panel 500 and the front beam 210 in the front-rear direction can be less than 1000mm, For example, it can be 30-200mm, preferably, it can be 60-140mm. The rocker inner panel 500 may be integrally formed with the front cross member 210 .

In order to be able to disperse the collision impact rearward, the vehicle body structure may further include two body side members 110 spaced from left to right. The body side members 110 may be integrally formed with the front cross member 210 and extend rearward from the front cross member 210, so as to dissipate the impact caused by the front collision. The impact force of the collision is transmitted to the rear of the body structure, reducing the deformation of the front of the vehicle. The rear end of the body rail 110 may be connected to the rear bumper beam or may be integrally formed with the rear bumper beam. In this way, it is also possible to transmit the impact force of the collision generated in a rear collision (rear collision) to the front part of the vehicle body structure, reducing the deformation of the rear part of the vehicle body. The front end of the body side member 110 and the rear end of the front side member 100 may be staggered in the left-right direction, that is, the front side member 100 is closer to the longitudinal centerline of the vehicle than the body side member 110.

Since the collision impact force is mainly concentrated in the rear section of the front side member 100 and then dispersed to the rear of the vehicle through other body structures, the rear section of the front side member 100 needs to have sufficient strength to ensure good transmission of the collision impact force, and The rear section of the front side member 100 is prevented from being deformed and pressed against the front wall panel 320 . Therefore, as shown in FIGS. 4 and 5 , in one embodiment, the vehicle body structure may further include an inner connecting plate 410 and an outer connecting plate 420 or one of them, so as to strengthen and straighten the rear of the front side member 100 . The role of segment.

Specifically, the inner connecting plate 410 is disposed on the inner side of the front longitudinal beam 100 and located between the front cabin beam 220 and the front beam 210 , and the inner connecting plate 410 may be integrally formed with the front longitudinal beam 100 , the front cabin beam 220 and the front beam 210 In this way, the inner connecting plate 410 can also assist in dispersing the impact force of the collision, so as to avoid excessive bending of the rear section of the front longitudinal member 100 , resulting in the deformation of the front wall 320 and squeezing the space of the passenger compartment.

As shown in FIG. 4 and FIG. 5 , the outer connecting plate 420 is disposed on the outer side of the front longitudinal beam 100 and is integrally formed with the front longitudinal beam 100 and the front transverse beam 210 to strengthen the front longitudinal beam 100 and can also be applied to In the case of a small offset collision of the vehicle, that is, the impact occurs on the outside of the front longitudinal beam 100. At this time, the force on the front longitudinal beam 100 is small, and the effect of collapse and energy absorption is poor, and the wheel bears the impact and retreats to compress the vehicle The A-pillar and the dash panel 320 easily lead to deformation of the body structure and squeeze the passenger compartment.

Since the outer connecting plate 420 is located on the outer side of the front side member 100 and is integrally formed with the front side member 100 and the front cross member 210, respectively, in a small offset collision, the outer connecting plate 420 can withstand the impact of the wheel and the front side member 100 and the front cross member 210 to transmit force, further, the outer connecting plate 420 can also extend outward to be integrally formed with the rocker inner plate 500, so that the force of the small offset collision can also be transmitted to the rear of the vehicle through the rocker inner plate 500, so as to prevent Deformation of the vehicle A-pillar and the cowl 320 caused by the impact of the collision is reduced. When the vehicle collides in front, when the front longitudinal beam 100 receives a large force, the impact force of the collision can also be dispersed and transmitted through the outer connecting plate 420 to prevent the rear section of the front longitudinal beam 100 from bending and deforming and invading the vehicle dash panel 320 .

In one embodiment, the body rail 110 may be integrally formed with the rocker inner panel 500 . The length of the body rail 110 may be greater than the length of the rocker inner panel 500 . The body side member 110 may include an integrally formed body side member front section 110A and a body side member rear section 110B. The body side member front section 110 and the rocker inner panel 500 are substantially corresponding in positions and are integrally formed, and the body side member front end 110A may be formed to be straight. beam. The rear body rail section 110B protrudes rearwardly from the rocker inner panel 500 and may be formed as an inwardly concave arched beam to avoid rear wheels.

In one embodiment, the vehicle body structure may further include a floor rear cross member 230 which is disposed behind the front cross member 210 at intervals and connected to the lower surface of the floor panel 300 . The floor rear cross member 230 may be integrally formed with the two body rail rear sections 110B. The rear end of the rear body rail section 110B projects rearwardly from the floor rear cross member 230 .

In this case, the front cross member 210 , the two body rails 110 and the floor rear cross member 230 together form a load-bearing frame which can be used to mount and carry vehicle elements, such as battery trays for the installation and carrying of battery packs . Through the structural design of the carrying frame, as many batteries as possible can be arranged under the floor panel 300 , which is beneficial to ensure that the vehicle has as long a cruising distance as possible.

When the load-bearing frame is used to install battery trays, the front cross member 210 , the floor rear cross member 230 and the body rail 110 may be sequentially referred to as battery pack front mounting beam, battery pack rear mounting beam and battery pack mounting rail, front cross member 210 , The rear floor cross member 230 and the vehicle body side member 110 may be provided with battery tray fastening holes, so that the battery tray carrying the battery pack can be mounted on the front cross member 210 , the floor rear cross member 230 and the vehicle body side member 110 through fasteners.

The body rail 110 is fixedly connected to the lower surface of the floor panel 300 and is integrally formed with the rocker inner panel 500 , so that the floor panel 300 is respectively installed with body beams in the left-right direction and the front-rear direction of the vehicle, so as to strengthen the floor panel 300 . It can prevent the floor panel 300 from deforming too much in collisions (including front collisions and side collisions).

When the vehicle has a front collision, the end of the body rail 110 can abut the front cross member 210 to prevent the front cross member 210 from moving backward and squeezing other elements of the body structure. This connection protects the battery pack behind the mounting beam in front of the battery pack. Similarly, when the vehicle is in a side collision, the front cross member 210 can abut against the rocker inner panel 500 to prevent the rocker inner panel 500 from being squeezed inward to drive the body side member 110 to move to the inner side of the body structure, so as to protect the inner side of the body side member 110 . For example, when the body rail 110 is used as a battery pack mounting rail, this connection method can protect the battery pack located inside the battery pack mounting rail, so as to avoid possible fire caused by the extrusion deformation of the battery pack, and lift the vehicle. crash safety performance.

When the vehicle is in a frontal collision, the impact force of the collision is mainly concentrated at the rear end of the front side member 100 and is dispersed to the body structure (eg, the rocker inner panel 500, the body side member 110, etc.) on both sides of the vehicle body structure through the front cross member 210 .

In this case, the force transmission path of the vehicle body structure during a front collision may be: front side member 100-front cross member 210-body side member 110 and rocker inner panel 500. The force transmission path in the rear collision is opposite to that in the front collision.

The load-bearing frame involved in the present disclosure can be a part of the collision force transmission path of the vehicle body structure through some of the above-mentioned embodiments. Specifically, the rear end of the front side member 100 is integrally formed with the front cross member 210 in the load-bearing frame. When the vehicle has a front collision, the front side member 100 first bears the impact, and the impact force of the collision is transmitted from the rear end of the front side member 100 to the front cross member. 210 and disperse to the body structure at the rear of the vehicle along the body longitudinal beam 110 and the sill inner panel 500, so that the vehicle can absorb the collision energy as a whole, reduce the deformation of the vehicle front panel 320, and protect the driver in the passenger compartment. and the occupants, and the connection of the front cross member 210, the rocker inner panel 500 and the body side member 110 together can increase the strength of the load-bearing frame, reduce the degree of deformation of the load-bearing frame (including front collision, rear collision and side collision), and avoid the load-bearing frame. The deformation squeezed the battery pack and caused a fire.

The body structure may also include a rear seat mounting beam 260 that may be integrally formed with the body rail 110 and spaced forward of the floor rear beam 230, and the load frame may further include a rear seat mounting beam 260 , so that the number of installation points of the battery tray and the load-bearing frame can be increased, which is beneficial to maintain the installation stability of the battery pack, and when the load-bearing frame involved in the present disclosure is used as a part of the force transmission path of the vehicle body structure, the rear seat is installed on the cross member The 260 can also increase the force transfer path between the rear side members 120 .

In one embodiment, as shown in FIGS. 2 and 4 , the vehicle body structure may further include two reinforcing longitudinal beams 130 spaced apart in the left-right direction, and reinforcing cross beams 240 and 250 spaced in the front-rear direction. Each reinforcing stringer 130 may be integrally formed with the corresponding rocker inner panel 500 to reinforce the rocker inner panel 500. Each reinforcing beam may be integrally formed with two reinforcing longitudinal beams 130 . The reinforcing beams 240 and 250 and the two reinforcing longitudinal beams 130 form a "mouth"-shaped closed-loop frame, and the closed-loop frame is supported between the rocker inner panels 500 on the left and right sides. Reinforcing beams 240 and 250 may be located rearward of front beam 210 and forward of rear seat mounting beam 260.

In this case, when the vehicle collides with a side barrier, by closing the frame between the two rocker inner panels 500, on the one hand, the overturning deformation of the rocker inner panel 500 can be effectively reduced, thereby reducing the B-pillar (connected in the rocker inner panel 500). On the other hand, the lateral deformation of the floor panel 300 and the sill inner panel 500 can be significantly reduced to prevent the occupant from being injured and the battery arranged under the floor panel 300. Package is damaged.

When the vehicle collides with a side pillar, the closed-loop frame enclosed by the reinforcing beams 240 and 250 and the two reinforcing longitudinal beams 130 can not only effectively improve the strength of the body structure, but also reduce the impact force from the side sill inner panel 500 It is directly transmitted to the sill inner panel 500 on the other side, so that the lateral deformation of the floor panel 300 and the sill inner panel 500 can be significantly reduced, preventing occupant injury and damage to the battery pack disposed under the floor panel 300 .

Especially in the "mouth"-shaped closed-loop frame surrounded by the reinforcing beams 240 and 250 and the two reinforcing longitudinal beams 130, the two ends of each reinforcing longitudinal beam 130 are respectively supported by a reinforcing beam, which makes the reinforcing longitudinal beams The 130 has high strength and rigidity, and when a side pillar collision occurs, the reinforcing longitudinal beam 130 can transmit the collision force to the reinforcing cross beams 240 and 250 more effectively.

In one embodiment, reinforcement stringers 130 are provided above floor panels 300 . In other embodiments, reinforcing stringers 130 may also be positioned below floor panels 300.

The reinforcement rails 130 may be provided at any suitable longitudinal positions of the rocker inner panel 500, for example, the reinforcement rails 130 may be provided at positions generally corresponding to the B-pillars. Since the B-pillar is connected to the rocker inner panel 500, the reinforcing longitudinal beam 130 is arranged at a position roughly corresponding to the B-pillar, so that the part of the rocker inner panel 500 connected to the B-pillar can be reinforced in a targeted manner, which is more effective. In order to reduce the intrusion deformation of the B-pillar to the indoor direction.

Specifically, the rear end of the reinforcing side member 130 may correspond to the position of the B-pillar in the lateral direction of the vehicle. The length of the reinforcing longitudinal beam 130 may be, for example, 300 to 500 mm. In some possible implementations, the front end of the stiffener 130 may extend to a position corresponding to the A-pillar, and the rear end may extend to the rear seat mounting beam.

In one embodiment, in order to improve the installation strength of the front seat and ensure the safety of the front row occupants, front seat mounting points may be provided on the reinforcing beams 240 and 250, that is, the reinforcing beams 240 and 250 may be respectively Install the cross member in front of the front seat and the cross member behind the front seat. Of course, in other embodiments, the front seat mounting points may also be provided in the area enclosed by the reinforcing cross members 240 and 250 and the two reinforcing longitudinal beams 130.

When the reinforcing stringer 130 is disposed below the floor panel 300, the reinforcing beams 240 and 250 may also be disposed below the floor panel 300 and connected to the lower surface of the floor panel 300. In this case, if the reinforcing beams 240 and 250 are used as front seat front mounting beams and front seat rear mounting beams, holes may be made at positions corresponding to the reinforcing beams in the floor panel 300 to facilitate fasteners The floor panel 300 can be passed through to connect to the reinforcing beams.

As shown in FIG. 1 , the floor panel 300 is formed with a central channel 300A protruding upward. In order to facilitate arranging the reinforcing beams 240 and 250 transversely penetrating the floor panel 300, in this embodiment, the central passage 300A may have a lower height than a common central passage, for example, the height of the central passage 300A may be less than 50mm.

During a side collision, whether it is a side wall collision or a side pillar collision, the rocker inner panel 500 is impacted by the collision, deforms slightly to absorb energy, and transmits the force to the body longitudinal beam 110 and the reinforcing longitudinal beam 130, and simultaneously transmits the force to Front and rear transmission, across the left and right front beams 210, reinforcing beams 240 and 250, floor rear beam 230, rear seat mounting beam 260, etc., can transmit the impact force from one side to the other side, dispersing side collisions force to protect the occupant compartment and battery pack.

In one embodiment of the vehicle body structure of the present disclosure, two closed-loop frame structures are formed below the floor panel 300, including:

1. A closed-loop frame surrounded by the front cabin beam 220, the two front longitudinal beams 100, and the front beam 210. The closed-loop frame structure can: firstly, bear the forward collision load, including the initial collision load and drive through the force transmission path. Second, the closed frame-shaped structure has strong stability, and in actual manufacturing, by setting the appropriate beam wall thickness and material strength, it can ensure that the front dash panel of the passenger compartment is restrained. Intrusion deformation; third, the reinforcing structure formed by the frame-shaped structure and the outer connecting plate 420 disposed on the outer side of the front longitudinal beam 100 can effectively adapt to the collision conditions such as small offset collisions with a serious tendency of the wheels to retreat and deform, ensuring that the rear side is restrained. The deformation of the A-pillar and the inner panel 500 of the door sill; fourthly, through the stable structure between the front cabin beam 220 and the front beam 210, the concentrated load exerted by the front longitudinal beam and the wheels in the small offset collision can be distributed and transmitted to the front beam to the maximum extent. The sill inner panels 500 and the floor longitudinal beams 110 on both sides of the passenger compartment are further transmitted to the rear of the vehicle body, so as to realize the normal force and more effectively avoid the deformation of the passenger compartment during front collision;

2. A closed-loop frame composed of a load-bearing frame, the closed-loop frame has at least the following advantages: First, under the condition of satisfying the requirements of collision safety deformation, it can provide the maximum space for the arrangement area of the energy storage battery, and improve the performance requirements of long-distance endurance; Second, the closed-loop frame provides a simple and easy assembling method for the energy storage battery pack, and the arrangement of the energy storage batteries with intensive features in spatial arrangement is beneficial to the electric and thermal management inside the battery pack; third, the closed-loop The geometric positions of the frame and the passenger compartment are basically aligned in the upper and lower positions, so that the improvement of the anti-collision deformation of the frame structure or the passenger compartment structure will protect the passengers and the energy storage battery pack at the same time; fourth, the closed-loop frame comparison It is easy to make a design with better structural balance, and it is easy to meet the requirements of performance balance of different parts. All in all, the two closed-loop frame structures can, on the one hand, disperse the collision force evenly on each beam, and can also stop the components arranged at the front of the vehicle, so as to prevent the vehicle's power unit such as the motor from moving backwards due to the impact of the collision. The passenger compartment or the battery pack located under the floor panel 300 may be squeezed, resulting in secondary collision damage.

In an embodiment of the vehicle body structure of the present disclosure, a closed-loop frame structure is formed above the floor panel 300 , that is, a “mouth”-shaped closed-loop frame surrounded by the reinforcing beams 240 and 250 and the two reinforcing longitudinal beams 130 , The closed-loop frame can not only effectively improve the strength of the vehicle body structure, but also can directly transmit the impact force from the rocker inner panel 500 on one side to the rocker inner panel 500 on the other side, so that the floor panel 300 and the rocker inner panel 500 can be significantly reduced The lateral deformation of the occupant is prevented, and the battery pack arranged under the floor panel 300 is prevented from being damaged. Both ends of each reinforcing longitudinal beam 130 are respectively supported by a reinforcing beam, which makes the reinforcing longitudinal beam 130 have high strength and rigidity. When a side column collision occurs, the reinforcing longitudinal beam 130 is not easily deformed, so that the reinforcement can be more effectively The collision force is transmitted to the reinforcing beams 240 and 250 .

The above describes the embodiment in which two reinforcing beams 130 are arranged in parallel with each other between the two reinforcing longitudinal beams. In an alternative embodiment, only one reinforcing beam may be disposed between the two reinforcing longitudinal beams 130, or two crossed reinforcing beams may be disposed.

In the present disclosure, by integrally molding all or part of the components of the vehicle body structure (eg, each beam, inner connecting plate, outer connecting plate, etc.), it is possible to: first, avoid the problems caused by welding, screwing, riveting, etc. Parts are deformed and the dimensional accuracy of parts is improved; second, the connection strength between parts is improved to ensure connection reliability, which is more conducive to the transmission and dispersion of collision forces; third, there is no need to set special The connection structure (such as flanging) is conducive to the lightweight of the whole vehicle; fourth, multiple parts are formed into an integrated structure, which is easy to manage.

In the present disclosure, any suitable process may be used to integrally form all or part of the components of the vehicle body structure, such as aluminum casting, injection molding, 3D printing, and the like.

On the basis of the above technical solutions, the present disclosure also provides a vehicle, which includes the body structure provided by the present disclosure. Therefore, the vehicle has all the advantages and beneficial effects of the body structure provided by the present disclosure, in order to reduce unnecessary repetitions , and will not be repeated here. Specifically, the vehicle may be an electric vehicle, so that the body structure is adapted to the installation of the battery pack.

The preferred embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above-mentioned embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure. These simple modifications all fall within the protection scope of the present disclosure.

In addition, it should be noted that the various specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are inconsistent. In order to avoid unnecessary repetition, the present disclosure provides The combination method will not be specified otherwise.

In addition, the various embodiments of the present disclosure can also be arbitrarily combined, as long as they do not violate the spirit of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.

Claims (17)

1. A vehicle body structure, characterized in that the vehicle body structure comprises a front cross member (210) and two front longitudinal members (100) spaced apart along the left-right direction, the rear end of the front longitudinal member (100) extending to The front cross member (210), the front cross member (210) and the two front longitudinal members (100) are integrally formed, and the vehicle body structure further includes two rocker inner panels located on the left and right sides of the floor panel (300) (500), the vehicle body structure further comprises two reinforcing longitudinal beams (130) and two vehicle body longitudinal beams (110) spaced along the left-right direction, and each reinforcing longitudinal beam (130) is connected in the corresponding rocker The inner side of the panel (500) is integrally formed with the corresponding rocker inner panel (500), the reinforcing longitudinal beam (130) is located above the floor panel (300), and the body longitudinal beam (110) is located at the The lower part of the floor panel (300) is integrally formed with the corresponding rocker inner panel (500), and the reinforcing longitudinal beam (130) is arranged at a position generally corresponding to the B-pillar of the vehicle. 2. The vehicle body structure according to claim 1, characterized in that, the orthographic projection of the front end of the front longitudinal member (100) on the horizontal plane and the orthographic projection of the rear end of the front longitudinal member (100) on the horizontal plane The staggered distance in the left and right direction is not more than 80mm. 3. The vehicle body structure according to claim 1, characterized in that, the vehicle body structure further comprises an inner connecting plate (410), and the inner connecting plate (410) is arranged on the inner side of the front longitudinal beam (100), The inner connecting plate (410) is integrally formed with the front longitudinal beam (100) and the front cross beam (210). The vehicle body structure according to claim 1, characterized in that, the vehicle body structure further comprises a front cabin beam (220), and the front cabin beam (220) is arranged in front of the front beam (210) at intervals, The front cabin beam (220) and the two front longitudinal beams (100) are integrally formed, and the front cabin beam (220), the two front longitudinal beams (100) and the front beam (210) are formed closed loop structure. 5. The vehicle body structure according to claim 4, wherein the front cabin cross member (220) is located in front of the cowl (320) and at least partially directly behind the power plant of the vehicle. 6. The vehicle body structure according to claim 1, wherein the front cross member (210) is located below the floor panel (300), and the rocker inner panel (500) is connected to the front cross member (210) One piece. 7. The vehicle body structure according to claim 6, characterized in that, the rocker inner panel (500) protrudes forward from the front cross member (210), and the front end of the rocker inner panel (500) is connected to the front end of the rocker inner panel (500). The distance of the front beam (210) along the front-rear direction is less than 1000mm. 8. The vehicle body structure according to claim 7, characterized in that, the vehicle body structure further comprises an outer connecting plate (420), and the outer connecting plate (420) is arranged on the outer side of the front longitudinal beam (100), The outer connecting plate (420) is integrally formed with the front longitudinal beam (100), the front cross beam (210) and the rocker inner plate (500). 9. The vehicle body structure according to claim 5, characterized in that, the vehicle body structure further comprises at least one reinforcing beam (240, 250), the reinforcing beam (240, 250) and the two reinforcing longitudinal beams ( 130) is integrally formed, and the reinforcing beams (240, 250) are located behind the front beam (210). 10. The vehicle body structure according to claim 9, wherein the reinforcing beams (240, 250) and the two reinforcing longitudinal beams (130) are located above the floor panel (300). 11. The vehicle body structure according to claim 9, wherein the at least one reinforcing beam (240, 250) comprises two reinforcing beams (240, 250) parallel to each other and spaced apart in the front-rear direction, the two reinforcing beams (240, 250) The two reinforcing beams (240, 250) and the two reinforcing longitudinal beams (130) form a closed-loop structure. 12. The vehicle body structure according to claim 9, characterized in that, the reinforcing beams (240, 250) are front seat mounting beams. 13. The vehicle body structure according to claim 6, wherein the vehicle body side member (110) is integrally formed with the front cross member (210) and extends rearwardly from the front cross member (210), the vehicle body The length of the longitudinal beam (110) is greater than the length of the rocker inner panel (500). 14. The vehicle body structure according to claim 13, characterized in that the vehicle body structure further comprises a floor rear cross member (230), and the floor rear cross member (230) is integrally formed with the two vehicle body longitudinal members (110) , the floor rear cross member (230) is located behind the front cross member (210), and the rear end of the vehicle body longitudinal member (110) protrudes rearward from the floor rear cross member (230). 15. The vehicle body structure according to claim 14, wherein the front beam (210) is a front mounting beam for a battery pack, the floor rear beam (230) is a rear mounting beam for a battery pack, and the vehicle body longitudinal beam (110) Install stringers for battery packs. 16. The vehicle body structure according to claim 13, characterized in that the vehicle body structure further comprises a rear seat mounting beam (260), the rear seat mounting beam (260) and the vehicle body longitudinal beam (110) One piece. 17. A vehicle comprising a body structure according to any one of claims 1-16.

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