Battery protection beam system and automobile

Abstract

The application relates to the technical field of automobile body structures, in particular to a battery protection beam system structure and an automobile. A first outer lining plate, a first side beam, a first inner lining plate, a first connecting cross beam, a second inner lining plate, a second side beam, a second outer lining plate, a first cross beam structure, a first reinforcing cross beam, a second connecting cross beam, a third reinforcing cross beam, a second cross beam structure, a second reinforcing cross beam, a third connecting cross beam, a fourth reinforcing cross beam and a third cross beam structure are connected effectively between a first rocker beam and a second rocker beam; the battery protection beam system structure is formed with nine closed beam systems, and the strength and rigidity of the automobile body region where the closed beam systems are arranged are increased. Whether the application is subjected to side impact or frontal impact, the impact force borne by the protection beam system structure can be well transmitted and dispersed, the automobile body deformation amount in the collision process is reduced, the deformation amount in the battery collision process is reduced, and the safety of the battery and the vehicle is ensured.

Description

Technical Field

[0001] This invention relates to the technical field of automobile body structure, specifically to a battery protection beam structure and an automobile. Background Technology

[0002] With increasing environmental awareness and stricter emission standards for vehicles, electric and hybrid vehicles are gaining popularity among consumers. Both electric and hybrid vehicles rely on batteries, electric drive systems, and electronic control systems. In the event of a collision, if the battery deforms significantly due to the impact force transmitted from the vehicle frame, it can easily explode and catch fire, seriously threatening the safety of the vehicle and its occupants. Therefore, while people are concerned about the comfort and environmental friendliness of electric and hybrid vehicles, they are particularly concerned about the safety of the power battery.

[0003] For electric vehicles, there is ample space in the vehicle body layout to reserve for battery protection structures, and the protection of their power batteries can be achieved through larger and more complex beam structures. However, for hybrid vehicles, since they are based on traditional fuel vehicles with the addition of batteries, electric drive, and electronic control systems, the addition of these systems not only leads to a more compact layout of each system but also increases the weight of the entire vehicle. Therefore, the protection of their power batteries requires meeting more stringent collision performance requirements within a limited space.

[0004] The existing vehicle body beam structure is not reasonable enough in transmitting frontal collision forces and cannot disperse the collision forces in a timely and effective manner to avoid acting on the power battery. This may lead to deformation of the vehicle body beam system. When the vehicle body beam system undergoes large deformation, the vehicle body intrudes into the battery in a large amount, which can easily lead to battery explosion and fire, seriously threatening the lives of the vehicle and its occupants. Summary of the Invention

[0005] One objective of this invention is to provide a battery protection beam structure to solve the problem that the existing vehicle body beam system does not transmit frontal and side impact forces reasonably and cannot effectively disperse frontal and side impact forces in a timely manner; the second objective is to provide a vehicle.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A battery protection beam system structure includes a central reinforcing beam structure, a first reinforcing beam structure and a second reinforcing beam structure symmetrically connected to the left and right sides of the central reinforcing beam structure; the central reinforcing beam structure includes a central channel and a first connecting beam, a second connecting beam, and a third connecting beam disposed in the central channel, the first connecting beam, the second connecting beam, and the third connecting beam being arranged in parallel; the first reinforcing beam structure includes a first outer liner plate, a first side beam, a first inner liner plate, a first reinforcing beam, a rear section of the first side beam, a second reinforcing beam, and a first sill beam, the first sill beam and the first side beam being arranged in parallel with the central channel, the two ends of the first outer liner plate being connected to the first sill beam and the first side beam respectively, and the two ends of the first inner liner plate being connected to the first side beam and the first connecting beam respectively. The first reinforcing beam is connected at both ends to the first sill beam and the second connecting beam, respectively. The second reinforcing beam is connected at both ends to the first sill beam and the central channel, respectively. The second reinforcing beam, the central channel, and the third connecting beam are connected by three layers of welding. The first reinforcing beam is provided with a first connecting structure for connecting the first side beam and the rear section of the first side beam. The rear section of the first side beam is also connected to the second reinforcing beam. The second reinforcing beam structure includes a second outer liner plate, a second side beam, a second inner liner plate, a third reinforcing beam, the rear section of the second side beam, a fourth reinforcing beam, and a second sill beam. The second sill beam and the second side beam are arranged parallel to the central channel. The two ends of the second outer liner plate are connected to the second sill beam and the second side beam, respectively. The two ends of the second inner liner plate are connected to the second side beam and the second connecting beam, respectively. The two ends of the third reinforcing beam are respectively connected to the second sill beam and the second connecting beam, and the two ends of the fourth reinforcing beam are respectively connected to the second sill beam and the central channel. The fourth reinforcing beam, the central channel, and the third connecting beam are connected by three layers of welding. The third reinforcing beam is provided with a second connecting structure for connecting the second side beam and the rear section of the second side beam. The rear section of the second side beam is also connected to the fourth reinforcing beam.

[0008] According to the aforementioned technical means, the first threshold beam, first outer liner, first side beam, first inner liner, first connecting crossbeam, second inner liner, second side beam, second outer liner, and second threshold beam are equivalent to the first crossbeam structure; the first threshold beam, first reinforcing crossbeam, second connecting crossbeam, third reinforcing crossbeam, and second threshold beam are equivalent to the second crossbeam structure; the first threshold beam, second reinforcing crossbeam, third connecting crossbeam, fourth reinforcing crossbeam, and second threshold beam are equivalent to the third crossbeam structure. The first, second, and third crossbeam structures all form an effective connection of forces between the first and second threshold beams. Lateral impact forces can be transmitted and dispersed from the first threshold beam to the second threshold beam, or from the second threshold beam to the first threshold beam, through the first, second, and third crossbeam structures. The first threshold beam, first outer liner, first side beam, and first reinforcing crossbeam form a first closed beam system. The first closed beam system is formed by the strong crossbeam, the rear section of the first side beam, and the second reinforcing crossbeam. The second closed beam system is formed by the first side beam, the first inner liner, and the first reinforcing crossbeam. The third closed beam system is formed by the rear section of the first side beam, the first reinforcing crossbeam, the central channel, and the second reinforcing crossbeam. The fourth closed beam system is formed by the first connecting crossbeam, the first inner liner, the second connecting crossbeam, and the second inner liner. The fifth closed beam system is formed by the second sill beam, the second outer liner, the second side beam, and the third reinforcing crossbeam. The sixth closed beam system is formed by the second sill beam, the third reinforcing crossbeam, the rear section of the second side beam, and the fourth reinforcing crossbeam. The seventh closed beam system is formed by the second side beam, the second inner liner, and the third reinforcing crossbeam. The eighth closed beam system is formed by the second side beam, the second inner liner, and the third reinforcing crossbeam. The ninth closed beam system is formed by the rear section of the second side beam, the third reinforcing crossbeam, the central channel, and the fourth reinforcing crossbeam. The nine closed beam systems, from the first to the ninth closed beam system, achieve structural continuity, improving the stiffness and strength of each area of ​​the vehicle body where the closed beam system is located. The battery protection beam structure of this invention effectively transmits and disperses the frontal or side impact forces experienced by the vehicle during driving, reducing the amount of vehicle deformation during collisions and the amount of battery deformation during collisions, thereby protecting the battery.

[0009] Furthermore, the central axis of the first side beam is offset from the central axis of the rear section of the first side beam, and a first reinforcing plate is connected between the rear section of the first side beam and the first reinforcing crossbeam.

[0010] According to the above technical means, the first side beam and the rear section of the first side beam are discontinuous in the Y direction. The position of the rear section of the first side beam can be adjusted according to the Y-direction dimension of the battery. The setting of the first reinforcing plate can not only increase the mechanical strength of the first side beam and the rear section of the first side beam, but also form an effective mechanical transmission path between the discontinuously designed first side beam and the rear section of the first side beam.

[0011] Furthermore, the first connecting structure includes a first connecting plate and a second connecting plate. The first connecting plate is installed on the first reinforcing crossbeam, and the second connecting plate is installed on the first connecting plate. The first side beam and the rear section of the first side beam are both connected to the first reinforcing crossbeam. The first reinforcing crossbeam, the first side beam, and the first connecting plate are connected by three layers of welding. The first reinforcing crossbeam, the rear section of the first side beam, and the first connecting plate are connected by three layers of welding. At the same time, the first reinforcing crossbeam, the first side beam, and the second connecting plate are connected by three layers of welding. The first reinforcing crossbeam, the rear section of the first side beam, and the second connecting plate are connected by three layers of welding.

[0012] According to the above technical means, the first side beam and the rear section of the first side beam are connected by the first connecting plate and the second connecting plate. The setting of the first connecting plate and the second connecting plate can not only further increase the mechanical strength of the first side beam and the rear section of the first side beam, but also form another effective mechanical transfer path between the discontinuously designed first side beam and the rear section of the first side beam.

[0013] Furthermore, the first connecting plate has a first overlapping edge and a second overlapping edge on both sides, the second connecting plate has a first connecting edge and a second connecting edge on both sides, the rear section of the first side beam is connected to the first overlapping edge and the second connecting edge, and the first side beam is connected to the second overlapping edge and the first connecting edge.

[0014] According to the above technical means, the first side beam is simultaneously connected and fixed to the first connecting plate and the second connecting plate, and the rear section of the first side beam is simultaneously connected and fixed to the first connecting plate and the second connecting plate. The first side beam and the rear section of the first side beam not only have connection points with the first connecting plate, but also have connection points with the second connecting plate. This arrangement forms two force transmission paths between the first side beam and the rear section of the first side beam, which facilitates the effective transmission of collision forces between the first side beam and the rear section of the first side beam.

[0015] Furthermore, the central axis of the second side beam is offset from the central axis of the rear section of the second side beam, and a second reinforcing plate is connected between the rear section of the second side beam and the third reinforcing crossbeam.

[0016] According to the above technical means, the second side beam and the rear section of the second side beam are discontinuous in the Y direction. The position of the rear section of the second side beam can be adjusted according to the Y-direction dimension of the battery. The setting of the second reinforcing plate can not only increase the mechanical strength of the second side beam and the rear section of the second side beam, but also form an effective mechanical transmission path between the discontinuously designed second side beam and the rear section of the second side beam.

[0017] Furthermore, the second connecting structure includes a third connecting plate and a fourth connecting plate. The third connecting plate is installed on the third reinforcing crossbeam, and the fourth connecting plate is installed on the third connecting plate. The second side beam and the rear section of the second side beam are both connected to the third reinforcing crossbeam. The third reinforcing crossbeam, the second side beam, and the third connecting plate are connected by three layers of welding. The third reinforcing crossbeam, the rear section of the second side beam, and the third connecting plate are connected by three layers of welding. At the same time, the third reinforcing crossbeam, the second side beam, and the fourth connecting plate are connected by three layers of welding. The third reinforcing crossbeam, the rear section of the second side beam, and the fourth connecting plate are connected by three layers of welding.

[0018] According to the above technical means, the second side beam and the rear section of the second side beam are connected by the third connecting plate and the fourth connecting plate. The setting of the third connecting plate and the fourth connecting plate can not only further increase the mechanical strength of the second side beam and the rear section of the second side beam, but also form another effective mechanical transfer path between the discontinuously designed second side beam and the rear section of the second side beam.

[0019] Furthermore, the third connecting plate has a third overlapping edge and a fourth overlapping edge on both sides, the fourth connecting plate has a third connecting edge and a fourth connecting edge on both sides, the rear section of the second side beam is connected to the third overlapping edge and the fourth connecting edge, and the second side beam is connected to the fourth overlapping edge and the third connecting edge.

[0020] According to the above technical means, the second side beam is simultaneously connected and fixed to the third and fourth connecting plates, and the rear section of the second side beam is simultaneously connected and fixed to the third and fourth connecting plates. The second side beam and the rear section of the second side beam not only have connection points with the third connecting plate, but also with the fourth connecting plate. This arrangement forms two force transmission paths between the second side beam and the rear section of the second side beam, which can facilitate the effective transmission of collision forces between the first side beam and the rear section of the first side beam.

[0021] Furthermore, front and rear reinforcing beams are vertically connected between the second and third connecting beams, and the front and rear reinforcing beams are located in the central channel.

[0022] Based on the aforementioned technical means, a closed beam system is formed by the first reinforcing crossbeam, the rear section of the first side beam, the second reinforcing crossbeam, the third connecting crossbeam, the front and rear reinforcing beams, and the second connecting crossbeam. The third reinforcing crossbeam, the rear section of the second side beam, the fourth reinforcing crossbeam, the third connecting crossbeam, the front and rear reinforcing beams, and the second connecting crossbeam. The formation of the closed beam system effectively transmits the impact borne by the vehicle body during driving and the force during the collision process, thereby improving the rigidity and strength of this area of ​​the vehicle body, reducing the amount of vehicle body deformation during the collision process, reducing the amount of battery deformation during the collision process, and thus protecting the battery.

[0023] An automobile includes a battery and a battery protection beam structure as described above, wherein the battery is disposed within an installation space formed by the rear section of a first side beam, a first reinforcing crossbeam, a third reinforcing crossbeam, and the rear section of a second side beam.

[0024] Based on the aforementioned technical means, the battery protection beam system structure, due to the equivalent crossbeam structure and the setting of each closed beam system structure, can effectively transmit the impact borne by the vehicle body during driving, effectively transmit the force during the collision process, reduce the amount of vehicle body deformation during the collision, reduce the amount of battery deformation during the collision, protect the battery, and thus ensure the driving safety of the vehicle.

[0025] Furthermore, the vehicle in question is a hybrid vehicle.

[0026] Based on the above technical means, since the battery protection beam structure can effectively transfer the force during the collision process, and the area of ​​the vehicle body where the battery protection beam structure is located has high rigidity and strength, it can also effectively reduce the amount of deformation of the battery during the collision process within the effective space reserved for the battery in the hybrid vehicle, thus ensuring battery safety and vehicle safety.

[0027] The beneficial effects of this invention are:

[0028] (1) In the battery protection beam system structure of the present invention, the first crossbeam structure, the second crossbeam structure, and the third crossbeam structure form an effective connection of forces between the first sill beam and the second sill beam. The nine closed beam systems from the first closed beam system to the ninth closed beam system improve the stiffness and strength of the vehicle body area where the closed beam system is located, effectively transmit the frontal or side impacts borne by the vehicle body during driving, reduce the amount of vehicle body deformation during the collision, reduce the amount of battery deformation during the collision, and thus protect the battery.

[0029] (2) The first side beam and the rear section of the first side beam are connected by the first connecting plate, the second connecting plate and the first reinforcing plate, which not only ensures the relative position accuracy and connection strength between the first side beam and the rear section of the first side beam, but also realizes the effective transmission of collision force between the first side beam and the rear section of the first side beam. The second side beam and the rear section of the second side beam are connected by the third connecting plate, the fourth connecting plate and the second reinforcing plate, which not only ensures the relative position accuracy and connection strength between the second side beam and the rear section of the second side beam, but also realizes the effective transmission of collision force between the second side beam and the rear section of the second side beam, thereby effectively transmitting the force during the collision process, effectively reducing the deformation of the battery during the collision process, and thus protecting the battery.

[0030] (3) The present invention has front and rear reinforcing beams vertically connected between the second and third connecting beams, which can not only increase the strength and rigidity of the middle channel, but also form closed beam systems on both sides of the middle channel, thereby improving the rigidity and strength of the vehicle body area where the closed beam system is located, reducing the amount of vehicle body deformation during the collision, reducing the amount of battery deformation during the collision, and thus protecting the battery. Attached Figure Description

[0031] Figure 1 This is a structural block diagram of the battery protection beam system in Example 1;

[0032] Figure 2 This is a schematic diagram of the battery protection beam system structure at one angle in Embodiment 1;

[0033] Figure 3 This is a schematic diagram of the battery protection beam system from another angle in Embodiment 1;

[0034] Figure 4 This is a structural schematic diagram of the reinforcing beam structure in Example 1;

[0035] Figure 5 This is a structural schematic diagram of the first reinforcing beam structure in Example 1;

[0036] Figure 6 This is a schematic diagram of the second reinforcing beam structure in Example 1;

[0037] Figure 7 This is a schematic diagram of the force transmission paths of the first, second, and third beam structures. The arrows in the diagram indicate the direction of impact force transmission.

[0038] Figure 8 This is a schematic diagram of the force transmission path of the battery protection beam system in Example 1. The arrows in the diagram indicate the direction of impact force transmission.

[0039] Figure 9 This is a schematic diagram of the force transmission path of the reinforced beam structure in Example 1. The arrows in the diagram indicate the direction of impact force transmission.

[0040] Figure 10 This is a schematic diagram of the force transmission path of the first reinforcing beam structure in Example 1. The arrows in the diagram indicate the direction of impact force transmission.

[0041] Figure 11 This is a schematic diagram showing the connection between the first side beam and the rear section of the first side beam or between the second side beam and the rear section of the second side beam in Embodiment 2;

[0042] Figure 12 This is a schematic diagram of the first connection structure in Embodiment 2;

[0043] Figure 13This is a schematic diagram of the force transmission path between the first side beam and the rear section of the first side beam in Example 2;

[0044] Figure 14 This is a schematic diagram of the second connection structure in Embodiment 2;

[0045] Figure 15 This is a schematic diagram of the battery protection beam system structure and the battery at one angle in Example 3;

[0046] Figure 16 This is a schematic diagram of the battery protection beam system and the battery from another angle in Example 3;

[0047] Among them, 1-central reinforcing beam structure; 11-central passage; 12-first connecting crossbeam; 13-second connecting crossbeam; 14-third connecting crossbeam; 15-front and rear reinforcing beams; 2-first reinforcing beam structure; 21-first outer lining plate; 22-first side beam; 23-first inner lining plate; 24-first reinforcing crossbeam; 25-rear section of the first side beam; 26-second reinforcing crossbeam; 27-first threshold beam; 28-first reinforcing plate; 3-second reinforcing beam structure; 31-second outer lining plate; 32-second side beam; 33-second inner lining plate; 34-third reinforcing crossbeam; 35-rear section of the second side beam; 36-second reinforcing beam structure; 36-second outer lining plate; 37-second sill beam; 28-first reinforcing plate; 39-second reinforcing beam structure; 30-second outer lining plate; 31-second outer lining plate; 32-second side beam; 33-second inner lining plate; 34-third reinforcing crossbeam; 35-rear section of the second side beam; 36-second inner lining plate; 37-second outer sill beam; 38-second outer sill beam; 39-second outer lining plate ... - Fourth reinforcing beam; 37 - Second threshold beam; 38 - Second reinforcing plate; 4 - First connecting structure; 41 - First connecting plate; 411 - First overlapping edge; 412 - Second overlapping edge; 413 - Fifth overlapping edge; 414 - Sixth overlapping edge; 42 - Second connecting plate; 421 - First connecting edge; 422 - Second connecting edge; 5 - Second connecting structure; 51 - Third connecting plate; 511 - Third overlapping edge; 512 - Fourth overlapping edge; 513 - Seventh overlapping edge; 514 - Eighth overlapping edge; 52 - Fourth connecting plate; 521 - Third connecting edge; 522 - Fourth connecting edge. Detailed Implementation

[0048] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] Example 1

[0051] This embodiment proposes a battery protection beam system structure, including a central reinforcing beam structure 1, a first reinforcing beam structure 2 and a second reinforcing beam structure 3 symmetrically connected to the left and right sides of the central reinforcing beam structure 1, as follows: Figures 1 to 3 As shown, the first reinforcing beam structure 2 and the second reinforcing beam structure 3 can be symmetrically connected to the left and right sides of the middle reinforcing beam structure 1 by spot welding to form a closed beam system, which facilitates the effective transmission of force during the collision, reduces the amount of collision intrusion, and ensures the collision safety of the battery and accessories.

[0052] like Figure 4 As shown, the central reinforcing beam structure 1 includes a central channel 11 and a first connecting beam 12, a second connecting beam 13, and a third connecting beam 14 disposed within the central channel 11. The first connecting beam 12, the second connecting beam 13, and the third connecting beam 14 are arranged in parallel. To increase the connection strength between the second connecting beam 13 and the third connecting beam 14, and to facilitate the formation of a closed beam system, in this embodiment, front and rear reinforcing beams 15 are vertically connected between the second connecting beam 13 and the third connecting beam 14, and the front and rear reinforcing beams 15 are disposed within the central channel 11. The first connecting beam 12, the second connecting beam 13, and the third connecting beam 14 can be connected to the central channel 11 by spot welding, and the second connecting beam 13 can be connected to the front and rear reinforcing beams 15, and the front and rear reinforcing beams 15 can be connected to the third connecting beam 14 by spot welding. The central reinforcing beam structure 1 is based on the central channel 11, and on this basis, a first connecting beam 12, a second connecting beam 13, a third connecting beam 14, and front and rear reinforcing beams 15 are added to facilitate the transmission of force during the collision process.

[0053] like Figure 5As shown, the first reinforcing beam structure 2 includes a first outer liner plate 21, a first side beam 22, a first inner liner plate 23, a first reinforcing crossbeam 24, a rear section 25 of the first side beam, a second reinforcing crossbeam 26, and a first sill beam 27. The first sill beam 27 and the first side beam 22 are arranged parallel to the central channel 11. Both ends of the first outer liner plate 21 are connected to the first sill beam 27 and the first side beam 22, respectively. One end of the first inner liner plate 23 is connected to the first side beam 22, and the other end of the first inner liner plate 23 is connected to the first connecting crossbeam 1. 2. The first reinforcing beam 24 is connected at both ends to the first sill beam 27 and the second connecting beam 13, respectively. The second reinforcing beam 26 is connected at both ends to the first sill beam 27 and the central channel 11, respectively. The second reinforcing beam 26, the central channel 11, and the third connecting beam 14 are connected by three-layer welding. The first reinforcing beam 24 is provided with a first connecting structure 4 for connecting the first side beam 22 and the rear section 25 of the first side beam. The rear section 25 of the first side beam is also connected to the second reinforcing beam 26. The connections between the first outer liner plate 21, the first side beam 22, the first inner liner plate 23, the first reinforcing beam 24, the rear section 25 of the first side beam, the second reinforcing beam 26, and the first sill beam 27 can all be made by spot welding.

[0054] like Figure 6 As shown, the second reinforcing beam structure 3 includes a second outer liner plate 31, a second side beam 32, a second inner liner plate 33, a third reinforcing crossbeam 34, a rear section 35 of the second side beam, a fourth reinforcing crossbeam 36, and a second sill beam 37. The second sill beam 37 and the second side beam 32 are arranged parallel to the central channel 11. Both ends of the second outer liner plate 31 are connected to the second sill beam 37 and the second side beam 32, respectively. One end of the second inner liner plate 33 is connected to the second side beam 32, and the other end of the second inner liner plate 33 is connected to the first connecting crossbeam 1. 2. The third reinforcing crossbeam 34 is connected to the second threshold beam 37 and the second connecting crossbeam 13 at both ends, respectively. The fourth reinforcing crossbeam 36 is connected to the second threshold beam 37 and the central channel 11 at both ends, respectively. The fourth reinforcing crossbeam 36, the central channel 11, and the third connecting crossbeam 14 are connected by three layers of welding. The third reinforcing crossbeam 34 is provided with a second connecting structure 5 for connecting the second side beam 32 and the rear section 35 of the second side beam. The rear section 35 of the second side beam is also connected to the fourth reinforcing crossbeam 36.

[0055] In this embodiment, the first sill beam 27, the first outer liner plate 21, the first side beam 22, the first inner liner plate 23, the first connecting crossbeam 12, the second inner liner plate 33, the second side beam 32, the second outer liner plate 31, and the second sill beam 37 are equivalent to the first crossbeam structure. The first sill beam 27, the first reinforcing crossbeam 24, the second connecting crossbeam 13, the third reinforcing crossbeam 34, and the second sill beam 37 are equivalent to the second crossbeam structure. The first sill beam 27, the second reinforcing crossbeam 26, the third connecting crossbeam 14, the fourth reinforcing crossbeam 36, and the second sill beam 37 are equivalent to the third crossbeam structure. The first crossbeam structure, the second crossbeam structure, and the third crossbeam structure all form an effective force connection between the first sill beam 27 and the second sill beam 37, facilitating the transmission of lateral collision forces. Figure 7 As shown.

[0056] The first threshold beam 27, the first outer lining plate 21, the first side beam 22, and the first reinforcing crossbeam 24 form a first closed beam system. The first threshold beam 27, the first reinforcing crossbeam 24, the rear section of the first side beam 25, and the second reinforcing crossbeam 26 form a second closed beam system. The first side beam 22, the first inner lining plate 23, and the first reinforcing crossbeam 24 form a third closed beam system. The first reinforcing crossbeam 24, the rear section of the first side beam 25, the second reinforcing crossbeam 26, the third connecting crossbeam 14, the front and rear reinforcing beams 15, and the second connecting crossbeam 13 form a fourth closed beam system. The first connecting crossbeam 12, the first inner lining plate 23, the second connecting crossbeam 13, and the second inner lining plate 33 form a fifth closed beam system. The second threshold beam 37, the second outer lining plate 31, the second side beam 32, and the third reinforcing crossbeam 24 form a fifth closed beam system. The sixth closed beam system is formed by beam 34, the seventh closed beam system is formed by the second sill beam 37, the third reinforcing crossbeam 34, the rear section of the second side beam 35, and the fourth reinforcing crossbeam 36, the eighth closed beam system is formed by the second side beam 32, the second inner liner plate 33, and the third reinforcing crossbeam 34, and the ninth closed beam system is formed by the third reinforcing crossbeam 34, the rear section of the second side beam 35, the fourth reinforcing crossbeam 36, the third connecting crossbeam 14, the front and rear reinforcing beams 15, and the second connecting crossbeam 13. The nine closed beam systems from the first to the ninth closed beam system achieve structural continuity, improve the rigidity and strength of the vehicle body area where the closed beam system is located, effectively transfer the collision force borne by the vehicle body during driving, reduce the amount of vehicle body deformation during collision, reduce the amount of battery deformation during collision, and thus protect the battery.

[0057] When the battery protection beam structure in this embodiment is subjected to a side impact, the force transmission path of the impact is as follows:

[0058] Taking the first door sill beam 27 as an example of being subjected to a collision impact, such as Figure 7As shown, when the first sill beam 27 is subjected to a collision impact, the impact force on the first sill beam 27 is transmitted to the second sill beam 37 along the following three paths: 1) along the equivalent first crossbeam structure of the first outer liner 21, the first side beam 22, the first inner liner 23, the first connecting crossbeam 12, the second inner liner 33, the second side beam 32, and the second outer liner 31; 2) along the equivalent second crossbeam structure of the first reinforcing crossbeam 24, the second connecting crossbeam 13, and the third reinforcing crossbeam 34; 3) along the equivalent third crossbeam structure of the second reinforcing crossbeam 26, the third connecting crossbeam 14, and the fourth reinforcing crossbeam 36. Thus, in the event of a side collision, an effective connection of force is formed between the first sill beam 27 and the second sill beam 37, facilitating the transmission of side collision force, effectively reducing the amount of vehicle body deformation during the collision, reducing the amount of battery deformation during the collision, and thus protecting the battery.

[0059] When the battery protection beam structure in this embodiment is subjected to a frontal collision, the force transmission path of the impact is as follows:

[0060] like Figures 8 to 10As shown, the impact force is first transmitted to the first side beam 22 and the second side beam 32: the impact force borne by the first side beam 22 is transmitted to the first inner lining plate 23 and the first outer lining plate 21; the impact force borne by the first outer lining plate 21 is transmitted to the first sill beam 27; the impact force borne by the first inner lining plate 23 is transmitted to the first connecting crossbeam 12; and the impact force borne by the first connecting crossbeam 12 is transmitted to the central channel 11. The impact force borne by the first side beam 22 is also transmitted to the first reinforcing crossbeam 24, and is further transmitted by the first side beam 22 and... The impact force borne by the first reinforcing crossbeam 24 is transmitted to the first sill beam 27 and the second connecting crossbeam 13 at the connection points of the first reinforcing crossbeam 24. The impact force borne by the second connecting crossbeam 13 is transmitted to the third connecting crossbeam 14 through the front and rear reinforcing beams 15 and then to the rear of the central passage 11. The impact force borne by the first side beam 22 is also transmitted to the rear section 25 of the first side beam, and then from the connection point of the rear section 25 of the first side beam and the second reinforcing crossbeam 26 to the first sill beam 27 and the third connecting crossbeam 14. The impact force borne by the third connecting crossbeam 14 is transmitted to the first sill beam 27 and the third connecting crossbeam 14 at the connection points of the first side beam 24 and the second reinforcing crossbeam 26. The impact force is transmitted to the rear of the central channel 11; the impact force borne by the second side beam 32 is transmitted to the second inner lining plate 33 and the second outer lining plate 31, the impact force borne by the second outer lining plate 31 is transmitted to the second threshold beam 37, the impact force borne by the second inner lining plate 33 is transmitted to the first connecting beam 12, and the impact force borne by the first connecting beam 12 is transmitted to the central channel 11; the impact force borne by the second side beam 32 is also transmitted to the third reinforcing beam 34, and is distributed at the connection between the second side beam 32 and the third reinforcing beam 34. The impact force borne by the first side beam 22 and the second side beam 32 is effectively dispersed to the second sill beam 27, the second side beam 25, the center channel 11, and the rear of the second sill beam 32 via the front and rear reinforcing beams 15. The impact force borne by the second side beam 32 is also transmitted to the rear section 35 of the second side beam, and then from the connection between the rear section 35 and the fourth reinforcing beam 36 to the second sill beam 37 and the third connecting beam 14. The impact force borne by the third connecting beam 14 is then transmitted to the rear of the center channel 11. Thus, in the event of a frontal collision, the impact forces borne by the first side beam 22 and the second side beam 32 are effectively dispersed to the rear of the first sill beam 27, the rear section 25 of the first side beam, the center channel 11, the rear section 35 of the second side beam, and the second sill beam 37, reducing the amount of vehicle body deformation during the collision and the deformation of the battery during the collision, thereby protecting the battery.

[0061] Example 2

[0062] This embodiment proposes another battery protection beam structure. In this embodiment, to accommodate the installation of batteries with different Y-axis dimensions, the central axes of the first side beam 22 and the rear section 25 of the first side beam are staggered, and their arrangement in the Y-axis is discontinuous. Figure 11 As shown; the central axes of the second side beam 32 and the rear section 35 of the second side beam are staggered, and their arrangement in the Y direction is also discontinuous. (See reference.) Figure 11 .

[0063] When the central axes of the first side beam 22 and the rear section 25 of the first side beam are discontinuous in the Y-direction, this embodiment effectively transmits and disperses the impact force borne by the first side beam 22 to the rear section 25 of the first side beam through multiple design features. Specifically, the following force transmission paths are designed:

[0064] 1) The first connecting structure 4 includes a first connecting plate 41 and a second connecting plate 42. The first connecting plate 41 is installed on the first reinforcing crossbeam 24, and the second connecting plate 42 is installed on the first connecting plate 41. The first side beam 22 and the rear section 25 of the first side beam are both connected to the first reinforcing crossbeam 24. The first reinforcing crossbeam 24, the first side beam 22, and the first connecting plate 41 are connected by three-layer welding. The first reinforcing crossbeam 24, the rear section 25 of the first side beam, and the first connecting plate 41 are also connected by three-layer welding. At the same time, the first reinforcing crossbeam 24, the first side beam 22, and the second connecting plate 42 are also connected by three-layer welding. The first side beam rear section 25 and the second connecting plate 42 are connected by three layers of welding; wherein, the first connecting plate 41 and the second connecting plate 42 are connected by weld points to ensure the relative positional accuracy and connection strength between them; the left and right sides of the first connecting plate 41 are respectively provided with a first lap edge 411 and a second lap edge 412, and the front and rear sides of the second connecting plate 42 are provided with a first connecting edge 421 and a second connecting edge 422. The first side beam rear section 25 is connected to the first lap edge 411 and the second connecting edge 422, and the first side beam 22 is connected to the second lap edge 412 and the first connecting edge 421, as shown. Figure 12 As shown. Both the first side beam 22 and the rear section 25 of the first side beam have connection points not only with the first connecting plate 41 but also with the second connecting plate 42. This creates two force transmission paths between the first side beam 22 and the rear section 25, facilitating the effective transfer of collision forces between them. Figure 13 As shown.

[0065] 2) A first reinforcing plate 28 is connected between the rear section 25 of the first side beam and the first reinforcing crossbeam 24. Thus, the impact force borne by the first side beam 22 is transmitted and dispersed to the rear section 25 of the first side beam through the first reinforcing crossbeam 24 and the first reinforcing plate 28. Specifically, the first connecting plate 41 is also provided with a fifth overlapping edge 413 for connecting the first reinforcing crossbeam 24 and the first reinforcing plate 28 and a sixth overlapping edge 414 for connecting the first reinforcing crossbeam 24 and the first connecting plate 41.

[0066] The first connecting plate 41, the second connecting plate 42, and the first reinforcing plate 28 are connected to the first side beam 22 and the rear section 25 of the first side beam through seven connection paths: the connection weld point between the first connecting plate 41 and the second connecting plate 42, the first overlapping edge 411, the second overlapping edge 412, the fifth overlapping edge 413, the sixth overlapping edge 414, the first connecting edge 421, and the second connecting edge 422. This achieves beam continuity between the first side beam 22 and the rear section 25 of the first side beam, facilitates the effective transmission of force between the first side beam 22 and the rear section 25 of the first side beam, reduces the amount of vehicle body intrusion during a collision, thereby reducing the amount of battery deformation, protecting the battery safety, and effectively realizing the battery protection function.

[0067] The connection between the second side beam 32 and the rear section 35 is similar to the connection between the first side beam 22 and the rear section 25. When the central axes of the second side beam 32 and the rear section 35 are discontinuous in the Y-direction, this embodiment effectively transmits and disperses the impact force borne by the second side beam 32 to the rear section 35 through multiple design features. Specifically, the following force transmission paths are designed:

[0068] 1) The second connecting structure 5 includes a third connecting plate 51 and a fourth connecting plate 52. The third connecting plate 51 is installed on the third reinforcing crossbeam 34, and the fourth connecting plate 52 is installed on the third connecting plate 51. The second side beam 32 and the rear section 35 of the second side beam are both connected to the third reinforcing crossbeam 34. The third reinforcing crossbeam 34, the second side beam 32, and the third connecting plate 51 are connected by three-layer welding. The third reinforcing crossbeam 34, the rear section 35 of the second side beam, and the third connecting plate 51 are also connected by three-layer welding. Simultaneously, the third reinforcing crossbeam 34, the second side beam 32, and the fourth connecting plate 52 are also connected by three-layer welding. The rear section 35 of the second side beam and the fourth connecting plate 52 are connected by three layers of welding; among them, the third connecting plate 51 and the fourth connecting plate 52 are connected by weld points to ensure the relative positional accuracy and connection strength between them; the left and right sides of the third connecting plate 51 are respectively provided with a third lap edge 511 and a fourth lap edge 512, and the front and rear sides of the fourth connecting plate 52 are provided with a third connecting edge 521 and a fourth connecting edge 522. The rear section 35 of the second side beam is connected to the third lap edge 511 and the fourth connecting edge 522, and the second side beam 32 is connected to the fourth lap edge 512 and the third connecting edge 521, as shown. Figure 13 As shown. The second side beam 32 and the rear section 35 of the second side beam not only have connection points with the third connecting plate 51, but also with the fourth connecting plate 52. In this way, two force transmission paths are formed between the second side beam 32 and the rear section 35 of the second side beam, which can facilitate the effective transmission of collision forces between the second side beam 32 and the rear section 35 of the second side beam.

[0069] 2) A second reinforcing plate 38 connects the rear section 35 of the second side beam and the third reinforcing crossbeam 34. Thus, the impact force borne by the second side beam 32 is transmitted and dispersed to the rear section 35 of the second side beam through the third reinforcing crossbeam 34 and the second reinforcing plate 38. Specifically, the third connecting plate 51 also has a seventh overlapping edge 513 for connecting the third reinforcing crossbeam 34 and the second reinforcing plate 38, and an eighth overlapping edge 514 for connecting the third reinforcing crossbeam 34 and the third connecting plate 51. Figure 14 As shown.

[0070] The third connecting plate 51, the fourth connecting plate 52, and the second reinforcing plate 38 are connected to the second side beam 32 and the rear section 35 of the second side beam through seven connection paths: the connection weld point between the third connecting plate 51 and the fourth connecting plate 52, the third overlapping edge 511, the fourth overlapping edge 512, the seventh overlapping edge 513, the eighth overlapping edge 514, the third connecting edge 521, and the fourth connecting edge 522. This achieves beam continuity between the second side beam 32 and the rear section 35 of the second side beam, promotes the effective transmission of force between the second side beam 32 and the rear section 35 of the second side beam, reduces the amount of vehicle body intrusion during a collision, thereby reducing the amount of battery deformation, protecting the battery safety, and effectively realizing the battery protection function.

[0071] Example 3

[0072] This embodiment proposes a vehicle including a battery and a battery protection beam structure as shown in Embodiment 1 or Embodiment 2. The battery is disposed within an installation space formed by the rear section 25 of the first side beam, the first reinforcing crossbeam 24, the third reinforcing crossbeam 34, and the rear section 35 of the second side beam. Figure 15 , 16 As shown. In this embodiment, the second reinforcing crossbeam 26 is the left front seat crossbeam, located below the left front seat; the fourth reinforcing crossbeam 36 is the right front seat crossbeam, located below the right front seat.

[0073] When the vehicle in this embodiment adopts the battery protection beam structure in Embodiment 1:

[0074] In the event of a side collision, the equivalent first, second, and third crossbeam structures can transmit and disperse the side impact force from the first sill beam 27 to the second sill beam 37 or from the second sill beam 37 to the first sill beam 27, reducing the amount of vehicle body deformation during the collision and the amount of battery deformation during the collision, thereby ensuring battery safety and vehicle safety.

[0075] In the event of a frontal collision, the rigidity and strength of the vehicle body area where the closed beam system is located are improved due to the setting of the nine closed beam systems from the first closed beam system to the ninth closed beam system. The impact borne by the vehicle body during driving can be effectively transmitted and dispersed, reducing the amount of vehicle body deformation during the collision and the amount of battery deformation during the collision, thereby ensuring battery safety and vehicle safety.

[0076] When the vehicle in this embodiment adopts the battery protection beam structure in Embodiment 2, in addition to the above-mentioned mechanical transmission, the following mechanical transmission also occurs:

[0077] The first side beam 22 and the rear section 25 of the first side beam are continuous, facilitating the effective transmission of force between the two beams. Similarly, the second side beam 32 and the rear section 35 of the second side beam are continuous, also facilitating the effective transmission of force between them. In addition to being transmitted to the rear of the first sill beam 27, the rear of the central tunnel 11, and the rear of the second sill beam 37, the frontal impact can also be transmitted to the rear sections 25 and 35 of the first and second side beams. This effectively transmits and disperses the frontal impact force, reduces the amount of vehicle body intrusion during a collision, thereby reducing the amount of battery deformation and ensuring battery and vehicle safety.

[0078] Example 4

[0079] This embodiment proposes a hybrid electric vehicle, including a battery and a battery protection beam structure as shown in Embodiment 1 or Embodiment 2. The battery is located in the installation space formed by the rear section 25 of the first side beam, the first reinforcing crossbeam 24, the third reinforcing crossbeam 34, and the rear section 35 of the second side beam.

[0080] Hybrid electric vehicles (HEVs) simultaneously possess both an engine system and a battery-electric drive and control system, thus limiting the available installation and protection space for these systems. This embodiment of the HEV, employing the battery protection beam structure from Embodiment 1 or Embodiment 2, effectively transmits and disperses frontal or lateral impact forces through the arrangement of three equivalent crossbeam structures (from the first to the third crossbeam), the design of nine closed beam systems (from the first to the ninth closed beam system), and the continuous connection between the first side beam 22 and the rear section 25 of the first side beam, and the continuous connection between the second side beam 32 and the rear section 35 of the second side beam. This reduces vehicle body intrusion and battery deformation during a collision. Therefore, the battery protection beam structure of Embodiment 1 or Embodiment 2 not only meets the battery placement constraints of hybrid vehicles but also solves the battery collision protection problem caused by the increased vehicle weight.

[0081] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A battery protection beam system structure, comprising a middle beam structure (1), a first beam structure (2) and a second beam structure (3) symmetrically connected to the left and right sides of the middle beam structure (1); characterized in that: the middle beam structure (1) comprises a middle channel (11) and a first connecting cross beam (12), a second connecting cross beam (13) and a third connecting cross beam (14) arranged in the middle channel (11), wherein the first connecting cross beam (12), the second connecting cross beam (13) and the third connecting cross beam (14) are arranged in parallel; the first beam structure (2) comprises a first outer lining plate (21), a first side beam (22), a first inner lining plate (23), a first reinforcing cross beam (24), a first side beam rear section (25), a second reinforcing cross beam (26) and a first threshold beam (27), wherein the first threshold beam (27) and the first side beam (22) are arranged in parallel with the middle channel (11), the two ends of the first outer lining plate (21) are connected with the first threshold beam (27) and the first side beam (22) respectively, one end of the first inner lining plate (23) is connected with the first side beam (22) and the other end of the first inner lining plate (23) is connected with the first connecting cross beam (12) and the first reinforcing cross beam (24), the two ends of the first reinforcing cross beam (24) are connected with the first threshold beam (27) and the second connecting cross beam (13) respectively, the two ends of the second reinforcing cross beam (26) are connected with the first threshold beam (27) and the middle channel (11) respectively, and the second reinforcing cross beam (26), the middle channel (11) and the third connecting cross beam (14) are connected by three layers of welding; the first reinforcing cross beam (24) is provided with a first connecting structure (4) for connecting the first side beam (22) and the first side beam rear section (25), and the first side beam rear section (25) is further connected with the second reinforcing cross beam (26). The second reinforcing beam structure (3) comprises a second outer lining plate (31), a second side beam (32), a second inner lining plate (33), a third reinforcing cross beam (34), a second side beam rear section (35), a fourth reinforcing cross beam (36) and a second threshold beam (37), the second threshold beam (37) and the second side beam (32) are arranged in parallel with the middle channel (11), the two ends of the second outer lining plate (31) are connected with the second threshold beam (37) and the second side beam (32) respectively, one end of the second inner lining plate (33) is connected with the second side beam (32), the other end of the second inner lining plate (33) is connected with the first connecting cross beam (12) and the third reinforcing cross beam (34), the two ends of the third reinforcing cross beam (34) are connected with the second threshold beam (37) and the second connecting cross beam (13) respectively, the two ends of the fourth reinforcing cross beam (36) are connected with the second threshold beam (37) and the middle channel (11) respectively, and the fourth reinforcing cross beam (36), the middle channel (11) and the third connecting cross beam (14) are connected through three-layer welding.

2. The battery guard rail system of claim 1, wherein, The central axis of the first side beam (22) is arranged in a staggered manner with the central axis of the first side beam rear section (25), and the first reinforcing plate (28) is connected between the first side beam rear section (25) and the first reinforcing cross beam (24).

3. The battery guard rail system of claim 2, wherein, The first connecting structure (4) comprises a first connecting plate (41) and a second connecting plate (42), the first connecting plate (41) is mounted on the first reinforcing cross beam (24), the second connecting plate (42) is mounted on the first connecting plate (41), the first side beam (22) and the first side beam rear section (25) are both connected to the first reinforcing cross beam (24), the first reinforcing cross beam (24), the first side beam (22) and the first connecting plate (41) are connected through three-layer welding, the first reinforcing cross beam (24), the first side beam rear section (25) and the first connecting plate (41) are connected through three-layer welding, the first reinforcing cross beam (24), the first side beam (22) and the second connecting plate (42) are connected through three-layer welding, and the first reinforcing cross beam (24), the first side beam rear section (25) and the second connecting plate (42) are connected through three-layer welding.

4. The battery guard rail system of claim 3, wherein, The two sides of the first connecting plate (41) are provided with a first lap edge (411) and a second lap edge (412), the two sides of the second connecting plate (42) are provided with a first connecting edge (421) and a second connecting edge (422), the first side beam rear section (25) is connected with the first lap edge (411) and the second connecting edge (422), and the first side beam (22) is connected with the second lap edge (412) and the first connecting edge (421).

5. The battery guard rail system of claim 1, wherein, The central axis of the second side beam (32) is arranged in a staggered manner with the central axis of the second side beam rear section (35), and the second reinforcing plate (38) is connected between the second side beam rear section (35) and the third reinforcing cross beam (34).

6. The battery guard rail system of claim 5, wherein, The second connecting structure (5) comprises a third connecting plate (51) and a fourth connecting plate (52), the third connecting plate (51) is installed on the third reinforcing cross beam (34), the fourth connecting plate (52) is installed on the third connecting plate (51), the second side beam (32) and the second side beam rear section (35) are both connected to the third reinforcing cross beam (34), the third reinforcing cross beam (34), the second side beam (32) and the third connecting plate (51) are connected by three-layer welding, the third reinforcing cross beam (34), the second side beam rear section (35) and the third connecting plate (51) are connected by three-layer welding, meanwhile, the third reinforcing cross beam (34), the second side beam (32) and the fourth connecting plate (52) are connected by three-layer welding, and the third reinforcing cross beam (34), the second side beam rear section (35) and the fourth connecting plate (52) are connected by three-layer welding.

7. The battery guard rail system of claim 6, wherein, The two sides of the third connecting plate (51) are provided with a third lap edge (511) and a fourth lap edge (512), the two sides of the fourth connecting plate (52) are provided with a third connecting edge (521) and a fourth connecting edge (522), the second side beam rear section (35) is connected to the third lap edge (511) and the fourth connecting edge (522), and the second side beam (32) is connected to the fourth lap edge (512) and the third connecting edge (521).

8. The battery guard rail system of any one of claims 1 to 7, wherein, The front-rear reinforcing beams (15) are vertically connected between the second connecting cross beam (13) and the third connecting cross beam (14), and the front-rear reinforcing beams (15) are arranged in the middle channel (11).

9. An automobile characterized by comprising: The battery protection beam system comprises a battery and a battery protection beam system according to any one of claims 1 to 8, and the battery is arranged in a mounting space formed by the first side beam rear section (25), the first reinforcing cross beam (24), the third reinforcing cross beam (34) and the second side beam rear section (35).

10. The automobile according to claim 9, characterized by The automobile is a hybrid automobile. The automobile is a hybrid automobile.

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