Rear anti-collision beam structure and hydrogen energy automobile

Abstract

The embodiment of the utility model provides a kind of rear crash beam structure and hydrogen energy automobile, it is related to automobile technical field.The utility model provides a kind of rear crash beam structure including the rear crash beam outer plate of being arranged in the tail of vehicle body, rear crash beam outer plate includes the arch shape portion of being away from the arch of vehicle body and the connecting portion located in the two sides of arch shape portion, connecting portion and arch shape portion jointly form the groove body with opening towards vehicle body;Inner mounting plate one end is connected with connecting portion, other end is connected with arch shape portion, and inner mounting plate separates groove body into closed cavity and open mounting cavity;Mounting cavity is provided with outer plate reinforcing pipe column, and energy absorption box assembly is arranged in the both ends of rear crash beam outer plate;Connection plate is connected and arranged on energy absorption box assembly, to be used for being connected with vehicle body.The hydrogen energy automobile provided by the utility model includes vehicle body floor assembly, hydrogen storage tank assembly and the aforementioned rear crash beam structure.The utility model has the effect of improving the use safety of hydrogen energy automobile.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and more specifically, to a rear anti-collision beam structure and a hydrogen fuel cell vehicle. Background Technology

[0002] With global attention focused on climate change and the goals of "carbon peaking" and "carbon neutrality" being proposed, hydrogen fuel cell vehicles are widely favored by the industry due to their advantages such as zero emissions, zero pollution, and high energy efficiency. The hydrogen storage tank in a hydrogen fuel cell vehicle is typically located under the rear floor of the vehicle. However, hydrogen is highly flammable and explosive. In the event of a rear-end collision at speeds exceeding 50 km / h, there is a risk of leakage and explosion of hydrogen from the storage tank valve due to compression.

[0003] Currently, rear bumper beams are typically used to absorb and disperse impact forces during high-speed collisions, protecting the rear structure of the vehicle, the hydrogen storage tank, and the safety of passengers. However, the hydrogen storage tanks in current hydrogen fuel cell vehicles are located too close to the rear bumper beams, and the structural strength of the rear bumper beams cannot meet the safety requirements for protection, resulting in low safety of hydrogen fuel cell vehicles. Utility Model Content

[0004] The purpose of this invention is to provide a rear bumper beam structure and a hydrogen fuel cell vehicle, which can improve the safety of hydrogen fuel cell vehicles.

[0005] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides a rear anti-collision beam structure, comprising: The rear anti-collision beam outer plate is installed at the rear of the vehicle body. The rear anti-collision beam outer plate includes an arched part that arches away from the vehicle body and connecting parts located on both sides of the arched part. The connecting parts and the arched part together form a groove with an opening facing the vehicle body. An inner mounting plate is disposed on the side of the rear anti-collision beam outer plate facing the vehicle body. One end of the inner mounting plate is connected to the connecting part and the other end is connected to the arched part. The inner mounting plate divides the groove into a closed cavity and an open mounting cavity. An outer plate reinforcing tube column is disposed in the mounting cavity, and the outer plate reinforcing tube column is fixedly connected to both the outer plate of the rear anti-collision beam and the inner mounting plate. Energy-absorbing box assemblies are provided at both ends of the outer panel of the rear anti-collision beam; A connecting plate is disposed on the energy-absorbing box assembly for connection to the vehicle body.

[0006] In an optional embodiment, the outer plate of the rear anti-collision beam is made of ultra-high strength steel with a thickness of 1mm-3mm and a yield strength of 590-980MPa.

[0007] In an optional embodiment, the outer plate reinforcing column is a hot-formed steel pipe with a thickness of 1mm-3mm and a yield strength of 950-1500MPa.

[0008] In an optional embodiment, the energy-absorbing box assembly includes a first plate and a second plate, both of which are U-shaped and are interlocked and fixedly connected.

[0009] In an optional embodiment, both the first plate and the second plate are ultra-high strength steel plates with a thickness of 1.4mm-3.0mm and a yield strength of 590-980MPa.

[0010] In an optional embodiment, the connecting plate is provided with a connector, and the connecting plate is detachably connected to the vehicle body through the connector.

[0011] In an optional embodiment, the connector includes a bolt.

[0012] In an optional embodiment, a pad is provided between the outer plate of the rear anti-collision beam and the energy-absorbing box assembly.

[0013] In an optional embodiment, the outer plate of the rear bumper beam is configured as an arc shape, and the arc-shaped opening faces the vehicle body.

[0014] Secondly, this utility model provides a hydrogen fuel cell vehicle, including a vehicle body floor assembly, a hydrogen storage tank assembly, and a rear anti-collision beam structure as described in any of the foregoing embodiments, wherein the outer plate of the rear anti-collision beam is connected to the vehicle body floor assembly through the connecting plate.

[0015] The beneficial effects of the rear bumper beam structure and hydrogen fuel cell vehicle provided by this embodiment of the invention include: The rear bumper beam outer panel includes an arched section and a connecting section. The arched design of the rear bumper beam outer panel itself has strong compressive strength. Together with the inner mounting plate, the rear bumper beam outer panel forms a cavity structure. A reinforcing tube column is installed in the mounting cavity to improve the overall structural strength of the rear bumper beam. The rear bumper beam can absorb greater impact force, and some of the impact force is transferred to the vehicle body through the energy absorption box assembly, thereby dispersing it throughout the entire vehicle body, reducing deformation of the rear of the vehicle body, avoiding direct collision with the rear-mounted battery and hydrogen storage tank, and improving vehicle safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a hydrogen fuel cell vehicle provided in this embodiment; Figure 2 This is a schematic diagram of the rear anti-collision beam structure provided in this embodiment; Figure 3 This is a cross-sectional view of the rear anti-collision structure provided in this embodiment; Figure 4 This is a structural schematic diagram of the energy-absorbing box assembly provided in this embodiment.

[0018] Icons: 100 - Vehicle floor assembly; 200 - Hydrogen storage tank assembly; 300 - Rear bumper beam structure; 310 - Rear bumper beam outer panel; 311 - Cavity; 312 - Mounting cavity; 313 - Arched part; 314 - Connecting part; 320 - Inner mounting plate; 330 - Outer panel reinforcing column; 340 - Energy absorption box assembly; 341 - First plate; 342 - Second plate; 350 - Connecting plate; 360 - Pad; 370 - Connector. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] With global attention focused on climate change and the goals of "carbon peaking" and "carbon neutrality" being proposed, hydrogen energy, as a key representative of clean energy, has become a burgeoning industry that countries are vying to develop. Hydrogen-powered vehicles, in particular, are widely favored by the industry due to their advantages such as zero emissions, zero pollution, and high energy efficiency. The hydrogen storage tank in a hydrogen-powered vehicle is typically located under the rear floor. However, hydrogen is highly flammable and explosive. In a rear-end collision at speeds exceeding 50 km / h, there is a risk of leakage and explosion of hydrogen from the storage tank valve due to compression. Therefore, the protective measures designed for vehicle hydrogen storage tanks must far exceed the safety standards for rear-end collision tests.

[0026] As a crucial rear-end collision protection component for hydrogen storage tanks, the rear bumper beam absorbs a greater impact force when the rear of a vehicle is struck at a speed exceeding 50 km / h. It also transfers some of the impact force to the left and right longitudinal beams, dispersing it throughout the entire vehicle body and reducing damage. This plays a vital role in protecting the rear-mounted 12V battery, hydrogen storage tank, and valves. However, current rear bumper beams for gasoline-powered vehicles have insufficient structural strength and cannot meet the safety requirements for protecting the rear-mounted 12V battery, hydrogen storage tank, and valves.

[0027] Based on this, this utility model provides a rear bumper beam structure and a hydrogen fuel cell vehicle to improve the strength of the rear bumper beam structure, thereby enhancing the safety of the hydrogen fuel cell vehicle. The following detailed description, through embodiments and in conjunction with the accompanying drawings, outlines the overall structure, working principle, and technical effects of the rear bumper beam structure and the hydrogen fuel cell vehicle provided by this utility model.

[0028] Please refer to Figure 1 On the one hand, this utility model provides a hydrogen fuel cell vehicle, which includes a vehicle body floor assembly 100, a hydrogen storage tank assembly 200 and a rear anti-collision beam structure 300. The hydrogen storage tank assembly 200 is located behind the vehicle body floor assembly 100 in the direction of travel, and the rear anti-collision beam structure 300 is located at the end of the hydrogen storage tank assembly 200 away from the vehicle body floor assembly 100. The rear anti-collision beam assembly is connected to the vehicle body floor assembly 100.

[0029] Please refer to Figures 2-3 On the other hand, this utility model provides a rear anti-collision beam structure 300, which is applied to the aforementioned hydrogen fuel cell vehicle. It has a high-strength structure and can resist greater impact forces to effectively protect the hydrogen storage tank assembly 200 and improve the safety of the hydrogen fuel cell vehicle.

[0030] For details, please refer to Figures 2-3 The rear bumper beam structure 300 provided by this utility model includes a rear bumper beam outer plate 310, an inner mounting plate 320, an outer plate reinforcing column 330, an energy-absorbing box assembly 340, and a connecting plate 350. The rear bumper beam outer plate 310 is located at the rear of the vehicle body and includes an arched portion 313 arched away from the vehicle body and connecting portions 314 located on both sides of the arched portion 313. This results in an arched cross-sectional shape for the rear bumper beam outer plate 310, bending away from the vehicle body, thus forming a groove with an opening facing the vehicle body. By setting the rear bumper beam outer plate 310 in an arched shape, the arched structure can convert impact force into compressive stress transmitted along the curved surface, significantly improving compressive strength compared to a flat plate structure. This ensures that in the event of a rear-end collision or other rear-end collision, the rear bumper beam outer plate 310 is the first to be impacted, absorbing the impact force and capable of withstanding significant impact forces. The inner mounting plate 320 is disposed on the side of the rear bumper beam outer plate 310 facing the vehicle body. The inner mounting plate 320 also has an arched cross-section. One end of the inner mounting plate 320 is fixedly connected to the connecting portion 314 of the rear bumper beam outer plate 310, and the other end is connected to the arched portion 313. Thus, the inner mounting plate 320 divides the groove into a cavity 311 and a mounting cavity 312. The cavity 311 is a closed chamber formed by the inner mounting plate 320 and part of the rear bumper beam outer plate 310, while the mounting cavity 312 is an open chamber formed by the rear bumper beam outer plate 310 and the inner mounting plate 320. The outer plate reinforcing column 330 is installed in the mounting cavity 312, and is fixedly connected to both the rear bumper beam outer plate 310 and the inner mounting plate 320.

[0031] Furthermore, the energy-absorbing box assembly 340 is provided at both ends of the rear anti-collision beam outer plate 310, and the connecting plate 350 is provided at the end of the energy-absorbing box assembly 340 away from the rear anti-collision beam outer plate 310. The rear anti-collision beam outer plate 310 is connected to the vehicle body through the connecting plate 350, that is, the rear anti-collision beam outer plate 310 is connected to the vehicle body floor assembly 100 through the connecting plate 350.

[0032] The rear bumper beam outer plate 310 is designed in an arch shape. The arched rear bumper beam outer plate 310 itself has strong compressive strength. It forms a cavity structure together with the inner mounting plate 320 and the rear bumper beam outer plate 310. The outer plate reinforcing column 330 is set in the mounting cavity 312 to improve the overall structural strength of the rear bumper beam structure 300. The rear bumper beam structure 300 can absorb greater impact force, and part of the impact force is transferred to the vehicle body through the energy absorption box assembly 340, and then dispersed to the entire vehicle body, reducing the deformation of the rear of the vehicle body, avoiding direct collision with the rear-mounted battery and hydrogen storage tank, and improving the safety of vehicle use.

[0033] Furthermore, to enhance the overall structural strength of the rear bumper beam structure 300 and ensure it meets vehicle safety requirements, in some optional embodiments, the outer plate 310 of the rear bumper beam is made of ultra-high-strength steel with a thickness of 1.0 mm to 3.0 mm and a yield strength of 590 to 980 MPa, through stamping. The outer plate reinforcing tube 330 is made of hot-formed steel tubing with a thickness of 1 mm to 3 mm and a yield strength of 950 to 1500 MPa. The outer plate reinforcing tube 330 is welded to the outer plate 310 and the inner mounting plate 320 of the rear bumper beam to form an integral high-strength structural component, enabling the rear bumper beam structure 300 to withstand greater impact forces.

[0034] Please refer to Figure 2 and Figure 4 In some optional embodiments, the energy-absorbing box assembly 340 includes a first plate 341 and a second plate 342, both of which are U-shaped and interlocked and welded together to form a hollow tubular structure. The energy-absorbing box assembly 340 is used to absorb impact energy through its own crumpling deformation during low-speed collisions, thereby reducing the impact force directly transmitted to the vehicle body. Furthermore, by configuring the energy-absorbing box assembly 340 as interlocking first plates 341 and second plates 342, and by creating openings in the first plates 341 and second plates 342, weak points are artificially created within the energy-absorbing box assembly 340 to induce crumpling during impact, thereby controlling the transmission path of the collision energy. Furthermore, in order to improve the structural strength of the energy-absorbing box assembly 340, in this embodiment, both the first plate 341 and the second plate 342 are made of ultra-high strength steel plates with a thickness of 1.4mm-3.0mm and a yield strength of 590-980MPa.

[0035] Please refer to Figures 2-3 In some optional embodiments, a connector 370 is provided on the connecting plate 350. The connecting plate 350 is detachably connected to the vehicle body via the connector 370. In this embodiment, the connector 370 includes mutually compatible bolts and nuts. Specifically, the connecting plate 350 is detachably installed on the rear longitudinal beam assembly of the vehicle body floor assembly 100 through the cooperation of bolts and nuts. The detachable installation of the connecting plate 350 via the connector 370 makes parts assembly, replacement, and maintenance more convenient, meeting the requirements of ease of replacement.

[0036] Please refer to Figure 2To further enhance the impact resistance of the rear bumper beam structure 300, in some optional embodiments, a pad 360 is provided between the outer plate 310 of the rear bumper beam and the energy-absorbing box assembly 340 to absorb the impact force received by the outer plate 310. Furthermore, the outer plate 310 of the rear bumper beam is arc-shaped, with the arc opening facing the vehicle body; that is, the outer plate 310 of the rear bumper beam is arched away from the vehicle body, thus optimizing the collision performance of the rear bumper beam structure 300. This allows the outer plate 310 of the rear bumper beam to contact the colliding object earlier in the event of a rear-end collision, providing a longer crumple zone for the energy-absorbing box assembly 340 and the outer plate 310, thereby absorbing more collision energy.

[0037] In summary, the implementation principle of the rear bumper beam structure and hydrogen fuel cell vehicle provided by this utility model is as follows: the outer plate 310 of the rear bumper beam is set in an arch shape. The arched outer plate 310 itself has strong compressive strength. The inner mounting plate 320 and the outer plate 310 together form a cavity structure. The outer plate reinforcing column 330 is set in the mounting cavity 312 to improve the overall structural strength of the rear bumper beam structure 300. The rear bumper beam structure 300 can absorb greater impact force, and part of the impact force is transferred to the vehicle body through the energy absorption box assembly 340, and then dispersed to the entire vehicle body, reducing the deformation of the rear of the vehicle body, avoiding direct collision with the rear-mounted battery and hydrogen storage tank, and improving the safety of vehicle use.

[0038] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A rear anti-collision beam structure, characterized in that, include: The rear anti-collision beam outer plate is installed at the rear of the vehicle body. The rear anti-collision beam outer plate includes an arched part that arches away from the vehicle body and connecting parts located on both sides of the arched part. The connecting parts and the arched part together form a groove with an opening facing the vehicle body. An inner mounting plate is disposed on the side of the rear anti-collision beam outer plate facing the vehicle body. One end of the inner mounting plate is connected to the connecting part and the other end is connected to the arched part. The inner mounting plate divides the groove into a closed cavity and an open mounting cavity. An outer plate reinforcing tube column is disposed in the mounting cavity, and the outer plate reinforcing tube column is fixedly connected to both the outer plate of the rear anti-collision beam and the inner mounting plate. Energy-absorbing box assemblies are provided at both ends of the outer panel of the rear anti-collision beam; A connecting plate is disposed on the energy-absorbing box assembly for connection to the vehicle body.

2. The rear anti-collision beam structure according to claim 1, characterized in that, The outer plate of the rear anti-collision beam is made of ultra-high strength steel with a thickness of 1mm-3mm and a yield strength of 590-980MPa.

3. The rear anti-collision beam structure according to claim 1, characterized in that, The outer plate reinforcing column is a hot-formed steel pipe with a thickness of 1mm-3mm and a yield strength of 950-1500MPa.

4. The rear anti-collision beam structure according to claim 1, characterized in that, The energy-absorbing box assembly includes a first plate and a second plate, both of which are U-shaped and are interlocked and fixedly connected.

5. The rear anti-collision beam structure according to claim 4, characterized in that, Both the first plate and the second plate are ultra-high strength steel plates with a thickness of 1.4mm-3.0mm and a yield strength of 590-980MPa.

6. The rear anti-collision beam structure according to claim 1, characterized in that, The connecting plate is provided with a connector, and the connecting plate is detachably connected to the vehicle body through the connector.

7. The rear anti-collision beam structure according to claim 6, characterized in that, The connectors include bolts and nuts.

8. The rear anti-collision beam structure according to any one of claims 1-7, characterized in that, A pad is provided between the outer plate of the rear anti-collision beam and the energy-absorbing box assembly.

9. The rear bumper beam structure according to any one of claims 1-7, characterized in that, The outer plate of the rear anti-collision beam is arc-shaped, and the opening of the arc faces the vehicle body.

10. A hydrogen-powered vehicle, characterized in that, The vehicle includes a vehicle floor assembly, a hydrogen storage tank assembly, and a rear anti-collision beam structure as described in any one of claims 1-9, wherein the rear anti-collision beam structure is connected to the vehicle floor assembly via the connecting plate.

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