New energy automobile impact point energy absorption device

Abstract

A new energy automobile impact point energy absorption device relates to the technical field of new energy automobile protection and comprises an energy absorption structure main body arranged in a front bumper area, a rear bumper area, an automobile chassis and an automobile door area of a new energy automobile, the energy absorption structure main body comprises an energy absorption plate, and the energy absorption plate is composed of an upper plate body and a lower plate body. A honeycomb cavity is formed in the upper plate body and the lower plate body after the upper plate body and the lower plate body are combined, a plurality of air bags arranged at equal intervals are arranged in the honeycomb cavity, a buffer plate is arranged below the energy absorption plate, a rubber pad is arranged between the energy absorption plate and the buffer plate, and the two end faces of the rubber pad are fixed to the energy absorption plate and the buffer plate in an adhesive adhesion mode respectively. A multi-stage buffer structure is formed by the energy absorption plate, the buffer plate, the rubber pad and the air bag. According to the scheme, the problems that an existing impact point energy absorption device is limited in energy absorption effect and poor in applicability are solved.

Description

New energy vehicle impact point energy absorption device Technical Field

[0001] This utility model relates to the field of new energy vehicle protection technology, specifically to an energy absorption device for the impact point of a new energy vehicle. Background Technology

[0002] The energy-absorbing device at the impact point of a new energy vehicle is a key component for ensuring driving safety. Through scientific structural design and material application, it plays a crucial role at the moment of collision. It is typically composed of a high-strength metal frame and energy-absorbing materials such as honeycomb and aluminum foam. When a vehicle collides, the energy-absorbing device can collapse and deform in an orderly manner according to a preset pattern, converting the kinetic energy generated by the impact into the potential energy and heat energy of the material deformation, thereby significantly reducing the transmission of the impact force to the vehicle body and passengers.

[0003] For example, the Chinese authorized patent CN217294660U, entitled "Energy-absorbing chassis structure for new energy vehicles," includes a crossbeam and a support plate. A fixing plate is fixedly connected to one side of the crossbeam, and a spring is fixedly connected to one side of the fixing plate. One end of the spring is fixedly connected to one side of the support plate. Straight plates are fixedly connected to the front and rear sides of one side of the support plate. Each of the two straight plates has an integrally formed clamping plate, and both clamping plates are slidably connected to the crossbeam. An mounting plate is fixedly connected to the other side of the support plate.

[0004] While the aforementioned existing technologies can achieve a certain impact energy absorption effect, they are large in size and complex in structure. On the one hand, the energy absorption effect of single-stage buffers is limited, and on the other hand, they cannot be flexibly applied to other parts of the car, such as doors, battery packs, and front and rear anti-collision beams. Therefore, they do not meet the current needs. In response, we have proposed an impact point energy absorption device for new energy vehicles. Summary of the Invention

[0005] The purpose of this utility model is to provide an energy absorption device for the impact point of new energy vehicles, so as to solve the problems of limited energy absorption effect and poor applicability of existing impact point energy absorption devices mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-absorbing device for impact points of new energy vehicles, comprising an energy-absorbing structural body disposed in the front bumper area, rear bumper area, chassis area, and door area of ​​a new energy vehicle. The energy-absorbing structural body includes an energy-absorbing plate, which is composed of an upper plate and a lower plate. The upper and lower plates, when combined, form a honeycomb cavity. The honeycomb cavity contains multiple airbags arranged at equal intervals. A buffer plate is disposed below the energy-absorbing plate. A rubber pad is disposed between the energy-absorbing plate and the buffer plate, and the two ends of the rubber pad are respectively bonded and fixed to the energy-absorbing plate and the buffer plate by adhesive. The energy-absorbing plate, the buffer plate, the rubber pad, and the airbags constitute a multi-level buffer structure.

[0007] Preferably, both the upper plate and the lower plate are made of metal, and the thickness of the upper plate is less than that of the lower plate.

[0008] Preferably, the airbag is pre-inflated, and the upper end of the honeycomb cavity inside the upper plate is provided with multiple equidistant upper limit grooves, and the lower end of the honeycomb cavity inside the lower plate is provided with multiple equidistant lower limit grooves. The upper limit grooves and lower limit grooves are combined to form a limit on a single airbag.

[0009] Preferably, the surface of the buffer plate is provided with a concave mesh lining.

[0010] Preferably, the bottom of the rubber pad is provided with a plurality of rubber buffer blocks arranged in a rectangular array, and the rubber buffer blocks extend into the interior of the mesh liner.

[0011] Preferably, the main body of the energy-absorbing structure, which consists of the energy-absorbing plate, the buffer plate, and the rubber pad, is installed on the new energy vehicle by welding.

[0012] Preferably, the multiple energy-absorbing structural bodies are welded and assembled according to the size of the installation area of ​​the new energy vehicle.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a multi-level buffer structure, with energy-absorbing plates, buffer plates, rubber pads, and airbags working together. Combined with the different thicknesses of the upper and lower plates, as well as the pre-inflated airbags and limiting groove design, it can respond quickly at the moment of impact, efficiently absorb and disperse impact energy, greatly reduce the impact force transmitted to the vehicle body and occupants, and significantly improve the safety of the vehicle and its occupants.

[0015] 2. The combination of the airbag limiting groove, the rubber buffer block and the mesh liner, as well as the welding installation method of this utility model, ensures the stability of each component of the energy absorption device during impact, avoids component displacement or detachment, and enables the entire energy absorption structure to work reliably under complex impact conditions, thereby improving the reliability and durability of the energy absorption device.

[0016] 3. The main body of the energy-absorbing structure of this utility model can be welded and assembled according to the size of the installation area of ​​the new energy vehicle, which can flexibly adapt to the needs of different models and installation locations, has good versatility, reduces the cost of separate research and development for different models, facilitates production and installation, and is conducive to large-scale promotion and application. Attached Figure Description

[0017] Figure 1 is a perspective view of this utility model;

[0018] Figure 2 is an exploded view of this utility model;

[0019] Figure 3 is an exploded view of this utility model from another perspective;

[0020] Figure 4 is a cross-sectional view of the internal structure of this utility model;

[0021] Figure 5 shows the internal structure of this utility model applied to a new energy vehicle battery pack.

[0022] In the diagram: 1. Energy-absorbing plate; 2. Buffer plate; 3. Rubber pad; 4. Upper plate; 5. Lower plate; 6. Honeycomb cavity; 7. Airbag; 8. Mesh liner; 9. Rubber buffer block; 10. Upper limit groove; 11. Lower limit groove; 12. Honeycomb panel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Embodiment 1

[0024] Please refer to Figures 1-5. One embodiment of this utility model is a new energy vehicle impact point energy absorption device, which includes an energy absorption structure main body disposed in the front bumper area, rear bumper area, chassis area, and door area of ​​the new energy vehicle. The energy absorption structure main body includes an energy absorption plate 1, which is composed of an upper plate 4 and a lower plate 5. After the upper plate 4 and the lower plate 5 are combined, they form a honeycomb cavity 6. The honeycomb cavity 6 is provided with multiple airbags 7 arranged at equal intervals. A buffer plate 2 is disposed below the energy absorption plate 1. A rubber pad 3 is disposed between the energy absorption plate 1 and the buffer plate 2. The two end faces of the rubber pad 3 are respectively bonded and fixed to the energy absorption plate 1 and the buffer plate 2 by adhesive. The energy absorption plate 1, the buffer plate 2, the rubber pad 3, and the airbags 7 constitute a multi-level buffer structure.

[0025] When a vehicle is impacted, the impact force first acts on the energy-absorbing plate 1. The airbag 7 within the honeycomb cavity 6 initially absorbs part of the impact force. Under small impacts, the airbag 7 deflects the force; under large impacts, the airbag 7 is compressed, deformed, or even bursts, thus buffering some of the impact. The remaining impact force is transferred to the energy-absorbing plate 1 itself, where the honeycomb structure further disperses and absorbs energy. Next, the impact force passes through the rubber pad 3, which cushions some of the force through its elastic deformation. Finally, the impact force reaches the buffer plate 2, which also absorbs some energy. Through this multi-stage buffering process, the impact force transmitted to the vehicle body and occupants is significantly reduced. Compared to a single energy-absorbing design, this significantly reduces damage to the vehicle during a collision, providing more reliable safety protection for the occupants. Furthermore, this structural design is reasonable, does not occupy excessive space, and can be well adapted to the different installation needs of new energy vehicles.

[0026] Please refer to Figures 2, 3, and 4. Both the upper plate 4 and the lower plate 5 are made of metal, and the upper plate 4 is thinner than the lower plate 5. Upon impact, the thinner upper plate 4 can quickly deform to some extent in the initial stage of impact, absorbing some energy and buying time for the subsequent buffering process. The thicker lower plate 5, with its stronger structural strength, maintains the stability of the overall structure when subjected to greater impact forces, preventing excessive deformation or breakage of the energy-absorbing plate 1 and ensuring the continuous and effective operation of the entire energy-absorbing structure.

[0027] Please refer to Figures 2, 3, and 4. The airbag 7 is pre-inflated. The upper end of the honeycomb cavity 6 inside the upper plate 4 has multiple equidistant upper limit grooves 10, and the lower end of the honeycomb cavity 6 inside the lower plate 5 has multiple equidistant lower limit grooves 11. The upper limit grooves 10 and lower limit grooves 11 combine to limit the movement of a single airbag 7. When an impact occurs and the airbag 7 is subjected to impact force, the pre-inflated airbag 7 can react quickly, buffering energy through its own elastic deformation. The presence of the limit grooves restricts the movement range of the airbag 7 within the honeycomb cavity 6, ensuring that the airbag 7 remains in its designed position when subjected to impact force. This prevents the airbag 7 from losing its buffering effect due to excessive displacement or causing damage to the energy-absorbing structure, ensuring that the airbag 7 can stably perform its buffering function. The pre-inflated airbag 7 reacts quickly and can respond to impacts promptly, improving energy absorption efficiency. The limiting groove limits the airbag 7, enhancing the stability and reliability of the entire energy-absorbing structure, making the cushioning effect of the airbag 7 more stable, and further improving the safety of the energy-absorbing device.

[0028] Referring to Figure 2, the surface of the buffer plate 2 is provided with a concave mesh liner 8. When an impact force is transmitted to the buffer plate 2, the concave mesh liner 8 can deform under compression, absorbing energy through the elastic and plastic deformation of the mesh structure. At the same time, the special structure of the mesh liner 8 can also disperse the impact force, making the impact force more evenly distributed on the buffer plate 2, avoiding local stress concentration, and improving the energy absorption effect of the buffer plate 2. The concave mesh liner 8 increases the energy absorption capacity of the buffer plate 2, improves the overall energy absorption device's ability to handle impact forces, effectively reduces the impact force transmitted to the vehicle body, protects the vehicle structure, and reduces the degree of vehicle damage.

[0029] Referring to Figure 3, the bottom of the rubber pad 3 is provided with multiple rubber buffer blocks 9 arranged in a rectangular array, and the rubber buffer blocks 9 extend into the interior of the mesh liner 8. During the transmission of impact force, the rubber buffer blocks 9 at the bottom of the rubber pad 3 will first contact the mesh liner 8 of the buffer plate 2. The rubber buffer blocks 9 have good elasticity. When compressed, the rubber buffer blocks 9 undergo elastic deformation, absorbing part of the impact force. At the same time, the rubber buffer blocks 9 extend into the interior of the mesh liner 8, and can cooperate with the mesh liner 8 to further enhance the buffering and energy absorption effect, converting more energy into the deformation energy of the rubber and the mesh liner 8. The cooperation between the rubber buffer blocks 9 and the mesh liner 8 greatly enhances the buffering and energy absorption capacity between the rubber pad 3 and the buffer plate 2, improving the overall performance of the entire energy absorption device.

[0030] Furthermore, the main energy-absorbing structure, consisting of energy-absorbing plate 1, buffer plate 2, and rubber pad 3, is welded onto the new energy vehicle. Multiple energy-absorbing structures are welded and assembled according to the size of the installation area on the new energy vehicle. This welding method ensures a secure connection between the energy-absorbing structure and the vehicle body. When the vehicle is impacted, the energy-absorbing structure can stably withstand and transmit the impact force, preventing displacement or detachment due to insecure installation. The welding and assembly of multiple energy-absorbing structures according to the installation area size allows for flexible adaptation to different vehicle models and installation locations, ensuring effective energy absorption protection for all critical areas of the vehicle. Example 2

[0031] Please refer to Figure 5. When the energy-absorbing device for the impact point of the new energy vehicle is installed in the chassis battery pack area, the difference from Embodiment 1 is that the thickness of the inner cavity after the upper plate 4 and the lower plate 5 are combined is increased, and the upper limit groove 10 and the lower limit groove 11 are removed from limiting the airbag 7. Instead, a metal honeycomb plate 12 is installed inside to replace the limiting groove to limit and fix the airbag 7. The honeycomb plate 12 has a rectangular array of airbag mounting holes inside. The airbag 7 is installed in the airbag mounting holes, and natural small holes are formed between adjacent airbag mounting holes. When a collision occurs in the battery pack area, the multi-layered airbag structure can form an effective buffer. The inner layer of the energy-absorbing plate 1 is thicker and plays a strong supporting role. The outer layer of the energy-absorbing plate 1 and the honeycomb plate 12 are thinner and play a certain suction role during the collision, thus achieving effective protection for the new energy vehicle battery pack.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An energy-absorbing device for impact points of new energy vehicles, comprising an energy-absorbing structural body disposed in the front bumper area, rear bumper area, chassis area, and door area of ​​the new energy vehicle, characterized in that: The main body of the energy-absorbing structure includes an energy-absorbing plate (1), which is composed of an upper plate (4) and a lower plate (5). The upper plate (4) and the lower plate (5) are combined to form a honeycomb cavity (6). The honeycomb cavity (6) is provided with multiple airbags (7) arranged at equal intervals. A buffer plate (2) is provided below the energy-absorbing plate (1). A rubber pad (3) is provided between the energy-absorbing plate (1) and the buffer plate (2). The two end faces of the rubber pad (3) are respectively bonded and fixed to the energy-absorbing plate (1) and the buffer plate (2) by adhesive. The energy-absorbing plate (1), the buffer plate (2), the rubber pad (3) and the airbags (7) constitute a multi-level buffer structure.

2. The energy absorption device for the impact point of a new energy vehicle according to claim 1, characterized in that: Both the upper plate (4) and the lower plate (5) are made of metal, and the thickness of the upper plate (4) is less than that of the lower plate (5).

3. The energy absorption device for the impact point of a new energy vehicle according to claim 1, characterized in that: The airbag (7) is pre-inflated. The upper end of the honeycomb cavity (6) inside the upper plate (4) is provided with multiple upper limit grooves (10) arranged at equal intervals. The lower end of the honeycomb cavity (6) inside the lower plate (5) is provided with multiple lower limit grooves (11) arranged at equal intervals. The upper limit grooves (10) and the lower limit grooves (11) are combined to form a limit on a single airbag (7).

4. The energy absorption device for the impact point of a new energy vehicle according to claim 1, characterized in that: The surface of the buffer plate (2) is provided with a concave mesh lining (8).

5. The energy absorption device for the impact point of a new energy vehicle according to claim 4, characterized in that: The bottom of the rubber pad (3) is provided with a plurality of rubber buffer blocks (9) arranged in a rectangular array, and the rubber buffer blocks (9) extend into the interior of the mesh liner (8).

6. The energy absorption device for the impact point of a new energy vehicle according to claim 1, characterized in that: The main body of the energy-absorbing structure, consisting of the energy-absorbing plate (1), the buffer plate (2) and the rubber pad (3), is installed on the new energy vehicle by welding.

7. The energy absorption device for the impact point of a new energy vehicle according to claim 1, characterized in that: Multiple energy-absorbing structural components are welded and assembled according to the size of the installation area of ​​the new energy vehicle.

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