Energy-absorbing bumper of new energy automobile

Abstract

The invention discloses a new energy automobile energy absorption bumper which comprises an energy absorption plate, and the top of the energy absorption plate is fixedly connected with a fixed bumper. A double-layer structure of the fixed bumper and the movable bumper is arranged at the top of the energy absorption plate, and a multi-stage buffering energy absorption system is formed in cooperation with a sliding groove-sliding block-connecting rod linkage mechanism and a compressed spring elastic assembly on the back face of the fixed plate. When encountering high-speed impact, the buffer structure can absorb energy to a certain degree, but cannot completely absorb energy, so that the fixed plate and the fixed bumper crumple towards the front side, then the energy absorption box assembly crumple, and a conduction column breaks a sealing plate; the viscosity of the fluid is suddenly increased under rapid collision and impact, the silicon-based shear thickening fluid is hardened when being rapidly impacted by utilizing the principle of non-Newtonian fluid, then the situation that the device continuously crumples greatly to damage a vehicle body is avoided, and the device has the advantage of being good in energy absorption effect.

Description

Technical Field

[0001] The present invention relates to the technical field of bumpers, and in particular to an energy-absorbing bumper for new energy vehicles. Background Art

[0002] With the rapid development of the new energy vehicle industry, vehicle safety performance requirements are increasing. Traditional fuel vehicle bumpers mainly achieve collision energy absorption through single-layer metal or plastic structures. However, new energy vehicles are equipped with high-energy-density battery packs, which place higher demands on the energy absorption efficiency, collision force transmission path, and battery pack protection of the front and rear bumpers: Traditional bumpers have a single energy-absorbing structure, resulting in low energy absorption efficiency (typically less than 40%) during a collision. The remaining energy is easily transferred to the vehicle's longitudinal beams or battery pack, causing battery deformation and even thermal runaway. Existing energy-absorbing materials (such as ordinary foam aluminum and polypropylene) are prone to irreversible deformation in low-speed collisions (≤15km / h), resulting in high repair costs. In high-speed collisions (≥50km / h), the energy absorption rate is insufficient and cannot meet the collision safety standards of new energy vehicles. Therefore, the energy-absorbing bumpers of new energy vehicles need to be redesigned and modified to effectively prevent poor energy absorption. Summary of the Invention

[0003] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide an energy-absorbing bumper for new energy vehicles, which has the advantage of good energy-absorbing effect.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-absorbing bumper for a new energy vehicle, comprising an energy-absorbing plate, wherein the top of the energy-absorbing plate is fixedly connected to a fixed bumper, the back of the fixed bumper is fixedly connected to a fixed plate, the number of the fixed plates is three, the top and bottom of the back of the fixed plate are provided with slide grooves, and both sides of the inside of the slide grooves are slidably connected to sliders, a movable plate is provided on the back of the fixed plate, the back of the slider is hinged with a connecting rod, the end of the connecting rod away from the slider is hinged to the movable plate, and a compression spring is fixedly connected between the left and right sliders, the back of the movable plate is fixedly connected to a buffer plate, the back of the buffer plate is fixedly connected to the movable bumper, the top of the energy-absorbing plate is fixedly connected to a storage box, the number of the storage boxes is several, and the storage boxes are uniform Distributed on the top of the energy absorbing plate, the interior of the storage box is provided with a silicon-based shear thickening fluid, the back of the interior of the storage box is fixedly connected to a sealing plate, the back of the sealing plate is fixedly connected to a conductive column, the back of the conductive column is provided with an energy absorbing box assembly, the top of the energy absorbing plate is fixedly connected to a medicine storage box, the number of the medicine storage boxes is several, the medicine storage boxes are evenly distributed on the top of the energy absorbing plate, the interior of the medicine storage box is fixedly connected to a safety partition plate, the back of the medicine storage box is connected to a rubber telescopic tube, the other end of the rubber telescopic tube is fixedly connected to the front of the fixed bumper, the front of the fixed bumper is fixedly connected to an impact column, the number of the impact columns is the same as the number of rubber telescopic tubes, the impact column is located inside the rubber telescopic tube, and sodium azide is provided inside the medicine storage box.

[0005] As a preferred embodiment of the present invention, the energy absorption box assembly includes an energy absorption box body and a crush tube, and the number of the energy absorption box body and the crush tube are two. The energy absorption box body and the crush tube are fixedly connected, and the energy absorption box body located on the back is fixedly connected to the front of the fixed bumper, and the crush tube located on the front is fixedly connected to the conduction column, and a crush stress groove is provided on the surface of the crush tube.

[0006] As a preferred embodiment of the present invention, sleeves are fixedly connected to the four sides of the back side of the fixed plate, the interior of the sleeve is slidably connected to a limit rod, and the back side of the limit rod is fixedly connected to the front side of the movable plate.

[0007] As a preferred embodiment of the present invention, buffers are fixedly connected to both sides of the back side of the fixed plate, and the buffers are fixedly connected to the movable plate.

[0008] As a preferred embodiment of the present invention, the back of the fixed plate is fixedly connected to a positioning frame on all four sides, the interior of the positioning frame is fixedly connected to a rubber block, the back of the rubber block extends to the back of the positioning frame and is fixedly connected to the movable plate.

[0009] As a preferred embodiment of the present invention, the bottom of the energy absorbing plate is provided with auxiliary collapse openings, and the number of the auxiliary collapse openings is several and the auxiliary collapse openings are evenly distributed on the bottom of the energy absorbing plate.

[0010] As a preferred embodiment of the present invention, the energy absorbing plate, the fixed bumper and the movable bumper are all made of high-strength aluminum alloy, and the buffer plate adopts a honeycomb aluminum alloy structure.

[0011] As a preferred embodiment of the present invention, an auxiliary breaking groove is provided on the back side of the sealing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a double-layer structure of a fixed bumper and a movable bumper on the top of the energy absorbing plate, and cooperates with the slide groove-slider-connecting rod linkage mechanism and the compression spring elastic component on the back of the fixed plate to form a multi-stage buffering energy absorption system. When the vehicle collides, the movable bumper first contacts the obstacle, pushing the movable plate to slide in the slide groove through the slider. The connecting rod mechanism converts the linear impact force into the elastic deformation energy of the compression spring to achieve initial buffering; then, to cope with low-speed collisions, after being hit by a low-speed collision, the movable plate and the movable bumper can be reset under the action of the compression spring. In the event of a low-speed collision, neither the energy absorbing plate nor the fixed bumper will collapse. The surface of the compression spring is sprayed with anti-rust paint. When encountering a high-speed collision, the above-mentioned buffering structure can absorb energy to a certain extent, but it cannot absorb all the energy, causing the fixed plate and the fixed bumper to collapse toward the front, thereby causing the absorption The energy box assembly collapses, causing the conductive column to break through the sealing plate. At the same time, the storage box has a built-in silicon-based shear thickening fluid. The viscosity of this fluid increases sharply under the impact of a rapid collision. Utilizing the principle of non-Newtonian fluid, the silicon-based shear thickening fluid hardens when subjected to a rapid impact, thereby preventing the device from continuing to collapse significantly and damaging the car body, thereby causing harm to the passengers in the car. When the fixed bumper collapses toward the front, the rubber telescopic tube is squeezed and contracted, and the impact column moves toward the front and breaks through the safety partition plate. The sodium azide in the medicine storage box produces a large amount of nitrogen, which causes the rubber telescopic tube to collide, thereby cushioning the impact. The device has the advantage of good energy absorption.

[0013] 2. The present invention constructs a staged energy dissipation system through the combined design of the energy absorbing box body and the collapse tube in the energy absorbing box assembly. The collapse stress grooves on the surface of the collapse tube can guide the collision force to be transmitted along a preset path, so that the collapse tube undergoes plastic deformation according to the distribution order of the stress grooves when impacted, and absorbs energy step by step. During a high-speed collision, the collapse tube collapses as a whole and drives the energy absorbing box body to deform synchronously, utilizing the superposition effect of the plastic deformation energy of the metal and the buckling energy of the structure to achieve continuous absorption of high-energy impacts. This structure avoids the problem of insufficient energy absorption rate of traditional single energy absorbing components during high-speed collisions. At the same time, through the orderly collapse of the stress grooves, it ensures that the collision force is evenly transmitted to the energy absorbing plate and the silicon-based shear thickening fluid in the storage box, forming a rigid-flexible coupled energy absorption mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic bottom view of the left side of the energy absorbing plate structure of the present invention; Figure 3 It is a schematic diagram of the left side top view of the fixed plate and movable plate structure of the present invention; Figure 4 It is a schematic cross-sectional view of the left side of the energy absorption box assembly and the storage box structure of the present invention; Figure 5 It is a schematic cross-sectional view of the rubber telescopic tube and medicine storage box structure on the left side of the present invention; Figure 6 For the present invention Figure 1 A magnified schematic diagram of the structure in the middle.

[0015] In the figure: 1. Energy absorbing plate; 2. Fixed bumper; 3. Fixed plate; 4. Slider; 5. Connecting rod; 6. Movable plate; 7. Compression spring; 8. Buffer plate; 9. Movable bumper; 10. Storage box; 11. Sealing plate; 12. Conducting column; 13. Energy absorbing box assembly; 14. Medicine storage box; 15. Safety partition plate; 16. Rubber telescopic tube; 17. Impact column; 18. Energy absorbing box body; 19. Crush tube; 20. Crush stress groove; 21. Auxiliary fracture groove; 22. Sleeve; 23. Limit rod; 24. Positioning frame; 25. Rubber block; 26. Buffer; 27. Auxiliary collapse vent. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figures 1 to 6As shown, a new energy vehicle energy-absorbing bumper comprises an energy-absorbing plate 1, the top of the energy-absorbing plate 1 is fixedly connected to a fixed bumper 2, the back of the fixed bumper 2 is fixedly connected to a fixed plate 3, the number of the fixed plates 3 is three, the top and bottom of the back of the fixed plate 3 are provided with slide grooves, and both sides of the inside of the slide groove are slidably connected to sliders 4, the back of the fixed plate 3 is provided with a movable plate 6, the back of the slider 4 is hinged with a connecting rod 5, the end of the connecting rod 5 away from the slider 4 is hinged to the movable plate 6, and a compression spring 7 is fixedly connected between the left and right sliders 4, the back of the movable plate 6 is fixedly connected to a buffer plate 8, the back of the buffer plate 8 is fixedly connected to a movable bumper 9, the top of the energy-absorbing plate 1 is fixedly connected to a storage box 10, the number of the storage boxes 10 is several, the storage boxes 10 are evenly distributed on the top of the energy-absorbing plate 1, the interior of the storage box 10 is provided with a silicon-based shear thickening fluid, the storage box 1 0 is fixedly connected to the back of the interior of the vehicle body 1, and a conductive column 12 is fixedly connected to the back of the sealing plate 11. An energy absorbing box assembly 13 is provided on the back of the conductive column 12. A medicine storage box 14 is fixedly connected to the top of the energy absorbing plate 1. There are several medicine storage boxes 14, and the medicine storage boxes 14 are evenly distributed on the top of the energy absorbing plate 1. A safety partition plate 15 is fixedly connected to the inside of the medicine storage box 14. The back of the medicine storage box 14 is connected to a rubber telescopic tube 16. The other end of the rubber telescopic tube 16 is fixedly connected to the front of the fixed bumper 2. The front of the fixed bumper 2 is fixedly connected to an impact column 17. The number of the impact columns 17 is the same as the number of the rubber telescopic tubes 16. The impact columns 17 are located inside the rubber telescopic tube 16. Sodium azide is provided inside the medicine storage box 14. Silicon-based shear thickening fluid is a shear thickening system prepared with silicon materials, such as silicone oil, silica particles, etc. as a matrix. Although its composition is different from that of traditional water-based shear thickening fluids, its flow behavior is completely consistent with the shear thickening characteristics: it behaves as a low-viscosity fluid at low shear rates, and its viscosity increases sharply at high shear rates. The installation method of the energy-absorbing plate 1 and the vehicle body is an existing common technology and will not be described in detail in this application. The principle that the above-mentioned sodium azide produces a large amount of nitrogen when it is impacted is common knowledge among people in this field and will not be described in detail in this application.

[0018] refer to Figure 4 The energy absorption box assembly 13 includes an energy absorption box body 18 and a crush tube 19. There are two energy absorption box bodies 18 and two crush tubes 19. The energy absorption box body 18 and the crush tube 19 are fixedly connected. The energy absorption box body 18 located at the back is fixedly connected to the front of the fixed bumper 2, and the crush tube 19 located at the front is fixedly connected to the conductive column 12. A crush stress groove 20 is provided on the surface of the crush tube 19.

[0019] As a technical optimization solution of the present invention, a staged energy dissipation system is constructed through the combined design of the energy absorbing box body 18 and the collapse tube 19 in the energy absorbing box assembly 13. The collapse stress groove 20 on the surface of the collapse tube 19 can guide the collision force to be transmitted along a preset path, so that the collapse tube 19 undergoes plastic deformation according to the distribution order of the stress grooves when impacted, and absorbs energy step by step. During a high-speed collision, the collapse tube 19 collapses as a whole and drives the energy absorbing box body 18 to deform synchronously, utilizing the superposition effect of the plastic deformation energy of the metal and the structural buckling energy to achieve continuous absorption of high-energy impacts. This structure avoids the problem of insufficient energy absorption rate of traditional single energy absorbing components during high-speed collisions, and at the same time, through the orderly collapse of the stress grooves, ensures that the collision force is evenly transmitted to the energy absorbing plate 1 and the silicon-based shear thickening fluid in the storage box 10, forming a rigid-flexible coupled energy absorption mechanism.

[0020] refer to Figure 3 The back of the fixed plate 3 is fixedly connected with a sleeve 22 on all sides, and the inner sliding connection of the sleeve 22 is a limit rod 23, and the back of the limit rod 23 is fixedly connected to the front of the movable plate 6.

[0021] As a technical optimization solution of the present invention, the sliding connection structure between the sleeve 22 and the limit rod 23, arranged around the back of the fixed plate 3, provides high-precision guidance and constraints for the reciprocating motion of the movable plate 6. When the movable plate 6 moves forward and backward under the action of the collision force, the limit rod 23 slides synchronously within the sleeve 22, ensuring that the movable plate 6 always moves in a direction perpendicular to the vehicle body, avoiding the mechanism jamming or stress concentration of the connecting rod 5 caused by lateral offset. This limit design not only improves the stability of the buffer mechanism, but also ensures that the elastic force of the compression spring 7 acts evenly on both sides of the movable plate 6, ensuring the synchronous movement of the left and right sliders 4, thereby optimizing the symmetrical transmission of the collision force.

[0022] refer to Figure 3 Buffers 26 are fixedly connected to both sides of the back of the fixed plate 3, and the buffers 26 are fixedly connected to the movable plate 6.

[0023] As a technical optimization solution of the present invention, the buffers 26 on both sides of the back of the fixed plate 3 are directly connected to the movable plate 6, forming a composite energy-absorbing structure that combines mechanical damping and elastic buffering. The hydraulic or pneumatic damping medium within the buffers 26 generates reverse resistance when the movable plate 6 moves, converting some of the kinetic energy into heat energy for dissipation. Especially in low-speed collisions, the damping effect of the buffers 26 can suppress excessive displacement of the movable plate 6 and prevent plastic deformation of the compression spring 7 due to excessive compression, thereby achieving elastic reset after the collision. Furthermore, the coordinated operation of the buffers 26 and the compression spring 7 enables the bumper to effectively absorb vibration energy even under high-frequency vibration conditions, such as bumpy roads, reducing resonant damage to the moving parts.

[0024] refer to Figure 3The back of the fixed plate 3 is fixedly connected to a positioning frame 24 on all sides, and the interior of the positioning frame 24 is fixedly connected to a rubber block 25. The back of the rubber block 25 extends to the back of the positioning frame 24 and is fixedly connected to the movable plate 6.

[0025] As a technical optimization solution of the present invention, a multi-directional elastic support system is constructed by installing rubber blocks 25 in the positioning frame 24 around the back of the fixed plate 3 and flexibly connecting them to the movable plate 6. The elastic deformation ability of the rubber blocks 25 can absorb part of the lateral and side impact forces during a collision, avoiding stress concentration at the edge of the movable plate 6 caused by non-head-on collisions, and at the same time dissipating high-frequency vibration energy through the viscoelastic properties of the rubber material. The rigid structure of the positioning frame 24 provides a limiting support for the rubber blocks 25, allowing them to maintain uniform deformation during the compression process, ensuring that the movable plate 6 is balanced in all directions. This design is particularly suitable for multi-angle collision scenarios. When the vehicle collides obliquely, the rubber blocks 25 can decompose the non-axial impact force into component forces in multiple directions through the combined action of shear and compression deformation, guiding the collision force to be evenly transmitted to the connecting rod 5 mechanism and the energy absorption box assembly 13, avoiding overload damage to local components.

[0026] refer to Figure 2 The bottom of the energy absorbing plate 1 is provided with auxiliary collapse openings 27 , and the number of the auxiliary collapse openings 27 is several, and the auxiliary collapse openings 27 are evenly distributed on the bottom of the energy absorbing plate 1 .

[0027] As a technical optimization solution of the present invention, a preset weak area is constructed by evenly distributing auxiliary collapse openings 27 at the bottom of the energy absorbing plate 1, guiding the orderly release of collision energy in the vertical direction. When the collision force is transmitted to the energy absorbing plate 1, the auxiliary collapse openings 27 first undergo plastic deformation, forming a collapse starting point, which then drives the entire energy absorbing plate 1 to collapse layer by layer according to the distribution order of the openings, thereby expanding the effective deformation area of ​​the energy absorbing plate 1. This design can absorb part of the energy through the local collapse of the openings in low-speed collisions, reducing the load on the fixed bumper 2 and the storage box 10; in high-speed collisions, the overall collapse guided by the openings and the viscous damping of the shear thickening fluid in the storage box 10 form a synergistic effect, allowing the energy absorbing plate 1 to continuously absorb energy during the collapse process, avoiding sudden energy transfer caused by uneven deformation.

[0028] refer to Figure 1 The energy absorbing plate 1, the fixed bumper 2 and the movable bumper 9 are all made of high-strength aluminum alloy, and the buffer plate 8 adopts a honeycomb aluminum alloy structure.

[0029] As a technical optimization solution of the present invention, by using high-strength aluminum alloy materials for the energy-absorbing plate 1, the fixed bumper 2, and the movable bumper 9, a lightweight design is achieved while ensuring structural strength. Its tensile strength can reach more than 300 MPa, meeting the dual requirements of lightweight components and high rigidity for new energy vehicles. The porous structure of the honeycomb aluminum alloy buffer plate 8 has excellent energy absorption characteristics. Its energy absorption capacity per unit mass is more than 1.5 times that of ordinary foam aluminum. Through the layer-by-layer collapse of the honeycomb cells, the impact kinetic energy can be converted into metal plastic deformation energy, achieving efficient absorption of medium and high frequency impact energy. This material combination reduces the weight of the entire bumper system by 40% compared to traditional steel bumpers, reduces the unsprung mass of the vehicle, and improves handling performance. At the same time, the corrosion resistance of high-strength aluminum alloy is better than that of traditional steel, which can reduce structural fatigue damage during long-term use. After salt spray testing, the corrosion resistance life of this material combination is extended by 30% compared to steel components, significantly improving the reliability and durability of the bumper.

[0030] refer to Figure 4 An auxiliary breaking groove 21 is provided on the back of the sealing plate 11 .

[0031] As a technical optimization solution of the present invention, a directional release mechanism of the shear thickening fluid is constructed through the auxiliary fracture groove 21 on the back of the sealing plate 11. When the collision force is transmitted to the sealing plate 11 through the conductive column 12, the auxiliary fracture groove 21 is first fractured due to the weakening of the cross section, causing the silicon-based shear thickening fluid in the storage box 10 to harden due to the rapid impact. The silicon-based shear thickening fluid utilizes the principle of non-Newtonian fluid. During a rapid impact, the silicon-based shear thickening fluid is hardened by the rapid impact of the conductive column 12 on the back, thereby improving the structural strength of the device. After multiple layers of collapse, the impact that has not absorbed energy is blocked, avoiding serious collapse of the vehicle body and causing harm to the passengers in the vehicle body. This design avoids the problem of fluid leakage caused by the uncontrollable fracture position of the traditional sealing structure during a collision.

[0032] The working principle and usage of the present invention are as follows: During normal operation, when a new energy vehicle is driving normally, the energy-absorbing bumper is in its initial state. The movable bumper 9 and the fixed bumper 2 are maintained in relative position by a sliding groove-slider 4-connecting rod 5 linkage mechanism on the back of the fixed plate 3 and a compression spring 7 elastic assembly. The silicon-based shear thickening fluid in the storage box 10 is in a low-viscosity fluid state. The sodium azide in the medicine storage box 14 is sealed and stored by the safety barrier 15. The rubber expansion tube 16 is naturally extended. The impact post 17 is located inside the rubber expansion tube 16 and maintains a safe distance from the safety barrier 15. When the vehicle is involved in a low-speed collision, the movable bumper 9 first contacts the obstacle. The impact force pushes the movable plate 6 forward, causing the slider 4 to move synchronously within the sliding groove and drive the connecting rod 5 to rotate. This compresses the compression spring 7, converting some of the kinetic energy into elastic deformation energy, achieving initial buffering and energy absorption. Simultaneously, the buffers 26 on both sides of the back of the fixed plate 3 generate a reverse damping force, suppressing excessive displacement of the movable plate 6 and preventing plastic deformation of the compression spring 7 due to excessive compression. During this process, sleeves 22 and limit rods 23 around the back of fixed plate 3 maintain stable vertical movement of movable plate 6. Rubber blocks 25 within positioning frame 24 elastically deform to absorb some of the lateral and side impact forces, ensuring even transmission of collision forces. Low-speed collisions, due to the low energy content, prevent collapse of energy-absorbing plate 1 and fixed bumper 2. After the collision, the elastic force of compression spring 7 resets movable plate 6 and movable bumper 9, restoring rubber expansion tube 16 to its original position. The entire buffer mechanism returns to its initial state, facilitating subsequent use.

[0033] When a vehicle encounters a high-speed collision, the powerful impact force exerted on the movable bumper 9 not only fully activates the compression spring 7 and buffer 26 but also pushes the fixed bumper 2 to collapse forward. At this point, the surface of the crush tube 19 in the energy absorption box assembly 13, with its surface collapse stress grooves 20, guides the collision force along a predetermined path. The crush tube 19 undergoes plastic deformation along the stress grooves, driving the energy absorption box body 18 to collapse simultaneously. This progressive absorption of high-energy impacts is achieved through the combined effect of the metal's plastic deformation energy and the structural buckling energy. As the fixed bumper 2 collapses, the conductive column 12 strikes the sealing plate 11. The auxiliary fracture groove 21 on the back of the sealing plate 11 fractures first due to cross-sectional weakening. The silicon-based shear thickening fluid within the storage box 10 experiences a sudden increase in viscosity under the rapid impact, hardening due to its non-Newtonian properties, forming a rigid support and preventing the device from collapsing significantly and damaging the vehicle body. Simultaneously, the collapse of the fixed bumper 2 squeezes the rubber expansion tube 16, causing the impact post 17 to move forward and break through the safety barrier 15. The sodium azide in the medicine storage box 14 is triggered by the impact to generate a large amount of nitrogen gas, which rapidly fills the rubber expansion tube 16, causing it to expand and provide a secondary buffering effect on the impact energy. The auxiliary collapse openings 27 at the bottom of the energy-absorbing plate 1 serve as a pre-determined weak zone. During the collision, they initially undergo plastic deformation, guiding the energy-absorbing plate 1 to collapse layer by layer according to the order in which the openings are distributed. This expands the effective deformation area and creates a synergistic effect with the viscous damping of the shear-thickening fluid in the storage box 10, continuously absorbing energy. Throughout this process, the energy-absorbing plate 1, fixed bumper 2, and movable bumper 9, constructed of high-strength aluminum alloy, withstand the primary impact force thanks to their high rigidity. The honeycomb aluminum alloy buffer plate 8, through its porous structure, gradually collapses layer by layer, absorbing medium- and high-frequency impact energy. This ensures that the collision energy is effectively dissipated by the multi-stage structure, minimizing the impact force transmitted to the vehicle's longitudinal rails and battery pack, and ensuring the safety of the vehicle's passengers and batteries.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle energy-absorbing bumper, comprising an energy-absorbing plate (1), characterized in that: The top of the energy absorbing plate (1) is fixedly connected to a fixed bumper (2), the back of the fixed bumper (2) is fixedly connected to a fixed plate (3), the number of the fixed plates (3) is three, the top and bottom of the back of the fixed plate (3) are provided with a slide groove, and both sides of the inside of the slide groove are slidably connected to a slider (4), the back of the fixed plate (3) is provided with a movable plate (6), the back of the slider (4) is hinged with a connecting rod (5), the end of the connecting rod (5) away from the slider (4) is hinged to the movable plate (6), and a compression spring (7) is fixedly connected between the left and right sliders (4), the back of the movable plate (6) is fixedly connected to a buffer plate (8), the back of the buffer plate (8) is fixedly connected to a movable bumper (9), the top of the energy absorbing plate (1) is fixedly connected to a storage box (10), the number of the storage boxes (10) is several, the storage boxes (10) are evenly distributed on the top of the energy absorbing plate (1), and the interior of the storage box (10) is provided with a silicon-based shearing device. The thickening fluid is cut, the back of the storage box (10) is fixedly connected to a sealing plate (11), the back of the sealing plate (11) is fixedly connected to a conductive column (12), the back of the conductive column (12) is provided with an energy absorbing box assembly (13), the top of the energy absorbing plate (1) is fixedly connected to a medicine storage box (14), the number of the medicine storage boxes (14) is several, the medicine storage boxes (14) are evenly distributed on the top of the energy absorbing plate (1), the interior of the medicine storage box (14) is fixedly connected There is a safety partition sheet (15), the back of the medicine storage box (14) is connected to a rubber telescopic tube (16), the other end of the rubber telescopic tube (16) is fixedly connected to the front of the fixed bumper (2), the front of the fixed bumper (2) is fixedly connected to an impact column (17), the number of the impact columns (17) is the same as the number of the rubber telescopic tube (16), the impact columns (17) are located inside the rubber telescopic tube (16), and sodium azide is provided inside the medicine storage box (14).

2. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The energy absorption box assembly (13) includes an energy absorption box body (18) and a crush tube (19), and the number of the energy absorption box body (18) and the crush tube (19) are both two. The energy absorption box body (18) and the crush tube (19) are fixedly connected, and the energy absorption box body (18) located at the back is fixedly connected to the front of the fixed bumper (2), and the crush tube (19) located at the front is fixedly connected to the conductive column (12), and the surface of the crush tube (19) is provided with a crush stress groove (20).

3. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The back of the fixed plate (3) is fixedly connected to sleeves (22) on all four sides, the interior of the sleeve (22) is slidably connected to a limiting rod (23), and the back of the limiting rod (23) is fixedly connected to the front of the movable plate (6).

4. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: Buffers (26) are fixedly connected to both sides of the back side of the fixed plate (3), and the buffers (26) are fixedly connected to the movable plate (6).

5. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The four sides of the back of the fixed plate (3) are fixedly connected to a positioning frame (24), the interior of the positioning frame (24) is fixedly connected to a rubber block (25), and the back of the rubber block (25) extends to the back of the positioning frame (24) and is fixedly connected to the movable plate (6).

6. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: Auxiliary collapse openings (27) are provided at the bottom of the energy absorbing plate (1). There are a plurality of auxiliary collapse openings (27), and the auxiliary collapse openings (27) are evenly distributed at the bottom of the energy absorbing plate (1).

7. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The energy absorption plate (1), the fixed bumper (2) and the movable bumper (9) are all made of high-strength aluminum alloy material, and the buffer plate (8) adopts a honeycomb aluminum alloy structure.

8. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: An auxiliary fracture groove (21) is provided on the back side of the sealing plate (11).

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