A multi-chamber cushion structure for shock absorption and protection of a new energy battery box

Abstract

This invention provides a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes, relating to the field of battery box shock absorption and protection technology. It includes a battery box, a primary shock absorption unit, and a secondary shock absorption unit. The primary shock absorption unit comprises multiple primary shock absorption units for primary shock absorption of the battery box. The secondary shock absorption unit comprises multiple secondary shock absorption units, fixedly connected to the primary shock absorption unit, for secondary shock absorption of the battery box. The secondary shock absorption unit includes multiple upper arc-shaped stress-dissipating plates, multiple lower arc-shaped stress-dissipating plates, and a support plate. The multiple upper arc-shaped stress-dissipating plates are detachably connected to the support plate and abut against the lower arc-shaped stress-dissipating plates. This invention, through the dual synergistic shock absorption of the primary and secondary shock absorption units, can efficiently filter high-frequency small-amplitude and low-frequency large-amplitude vibrations generated during vehicle operation, providing comprehensive protection of the battery box from vibration damage.

Description

Technical Field

[0001] This invention relates to the field of battery box shock absorption and protection technology, and in particular to a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes. Background Technology

[0002] With the rapid development of the global new energy vehicle industry, the production and sales of new energy vehicles continue to climb. As the core energy supply component of new energy vehicles, the power battery system's safety and stability directly determine the overall vehicle's operating performance and safety. The battery box, as a key structural and safety component of the power battery system, plays a crucial role in carrying the battery cells, protecting them from external damage, and integrating various related subsystems. It has become a core component in the development of new energy vehicles. The battery box is no longer simply a container for battery cells, but a complex system integrating structural support, protection, and precise coordination with the vehicle chassis and other systems. Its design and performance directly affect the overall safety, lightweighting level, and vehicle layout adaptability of the battery pack. During actual driving, new energy vehicles encounter various complex conditions such as road bumps, rapid acceleration, and sudden braking. These conditions generate vibrations of different frequencies and amplitudes. The battery cells, wiring, and other components inside the battery box are highly sensitive to vibration; prolonged exposure to vibration can affect their operational stability and lifespan. Meanwhile, domestic and international regulations and testing standards for the safety of new energy vehicles are becoming increasingly stringent, placing higher demands on the mechanical protection performance of battery boxes. Against this backdrop, effective shock absorption and protection design for battery boxes has become an important technical direction to ensure the long-term stable operation of power battery systems for new energy vehicles and to meet the needs of industry development. The research and development of related buffer protection structures has also become one of the key aspects of industry technology upgrading.

[0003] Typical battery box shock absorption and protection devices are mostly single shock absorption designs, which cannot simultaneously filter high-frequency small-amplitude and low-frequency large-amplitude vibrations generated during vehicle operation. Incomplete vibration filtering can easily lead to vibrations being transmitted to the battery box, damaging the internal cells and wiring. Summary of the Invention

[0004] This invention provides a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes, which solves the defect of incomplete vibration filtering in the prior art.

[0005] On one hand, this invention provides a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes, comprising: a battery box, multiple primary shock absorption units, and multiple secondary shock absorption units. The multiple primary shock absorption units are used for primary shock absorption of the battery box. The multiple secondary shock absorption units are fixedly connected to the primary shock absorption units and are used for secondary shock absorption of the battery box. Each secondary shock absorption unit includes multiple upper arc-shaped stress-dissipating plates, multiple lower arc-shaped stress-dissipating plates, and a support plate. The multiple upper arc-shaped stress-dissipating plates are detachably connected to the support plate and abut against the lower arc-shaped stress-dissipating plates.

[0006] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box further includes a top plate, on which the battery box is placed. The primary shock absorption unit includes a movable end, a spring, and a lower fixed end. One end of the movable end is fixedly connected to the top plate, and the other end is disposed within the lower fixed end and slidably connected to it. Both ends of the spring abut against the movable end and the lower fixed end, respectively.

[0007] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of new energy battery box is provided, wherein the movable end and the lower fixed end form a pneumatic rod structure.

[0008] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box is provided. The support plate has multiple mounting grooves at its bottom, and an upper arc-shaped stress-dissipating plate is slidably connected to the mounting grooves. The secondary shock absorption unit also includes a fixing plate with multiple mounting grooves, and a lower arc-shaped stress-dissipating plate is slidably connected to the mounting grooves. Both mounting grooves have a "T" shaped cross-section.

[0009] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of new energy battery box is provided, wherein the upper arc-shaped stress-dissipating plate and the lower arc-shaped stress-dissipating plate have the same cross-sectional structure, and the ends of the upper arc-shaped stress-dissipating plate and the lower arc-shaped stress-dissipating plate are both rounded.

[0010] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of new energy battery box is provided, wherein the cross section of the fixing plate is "U" shaped and is used to fix multiple lower arc-shaped force-dispersing plates.

[0011] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box includes an upper arc-shaped stress-dissipating plate comprising a mounting strip, an arc-shaped plate, and a limiting strip. The mounting strip is fixedly connected to the outer side of the arc-shaped plate, and the limiting strip is fixedly installed on the inner side of the arc-shaped plate.

[0012] The multi-chamber buffer pad structure for shock absorption and protection of new energy battery box provided by the present invention also includes multiple connecting blocks, which are fitted with two adjacent fixing plates for connecting the two adjacent fixing plates.

[0013] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of new energy battery box is provided, wherein the cross section of the mounting strip is "T" shaped and is adapted to the shape of the mounting groove.

[0014] According to the present invention, a multi-chamber buffer pad structure for shock absorption and protection of new energy battery box is provided, wherein the cross-section of the connecting block is double-conical.

[0015] This invention provides a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes. Through the initial protection of the top plate and the dual synergistic shock absorption of the primary and secondary shock absorption units, it can efficiently filter high-frequency small-amplitude and low-frequency large-amplitude vibrations generated during vehicle operation, providing all-round protection for the battery box from vibration damage. At the same time, the chamber design of the upper and lower arc-shaped stress-dissipating plates, the limiting structure of the support plate and fixing plate, and the connecting function of the connecting blocks ensure the overall stability and shock absorption consistency of the buffer pad structure. It also has the advantages of convenient disassembly and maintenance, lightweight, wear resistance, and high temperature resistance, making it suitable for the use needs of new energy vehicles. It effectively extends the service life of the battery box and buffer pad structure and improves the safety and stability of battery operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box provided in an embodiment of the present invention; Figure 2 This is a front view of a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box provided in an embodiment of the present invention; Figure 3 yes Figure 1 A partial structural schematic diagram of a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box. Figure 4 yes Figure 3 The bottom view; Figure 5 yes Figure 3 A three-dimensional structural diagram of the central fixing plate; Figure 6 yes Figure 3 A three-dimensional structural diagram of the central support plate; Figure 7 yes Figure 6 Enlarged view of the local structure of region B in the middle; Figure 8 yes Figure 3 A three-dimensional structural diagram of the upper and middle arc-shaped stress-relief plate; Figure 9 yes Figure 2 A three-dimensional structural diagram of a primary damping unit; Figure 10 yes Figure 9 Top view; Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure along the CC direction.

[0018] Reference numerals: 1. Battery box; 2. Primary damping unit; 21. Movable end; 22. Spring; 23. Lower fixed end; 3. Secondary damping unit; 31. Upper arc-shaped stress-dissipating plate; 311. Mounting strip; 312. Arc-shaped plate; 313. Limiting strip; 32. Lower arc-shaped stress-dissipating plate; 33. Support plate; 331. Mounting slot one; 34. Fixed plate; 341. Mounting slot two; 4. Top plate; 5. Connecting block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Example

[0020] The following is combined Figures 1-11 This invention describes a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box.

[0021] like Figures 1-11As shown in the figure, an embodiment of the present invention provides a multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box, comprising: a battery box 1, multiple primary shock absorption units 2, and secondary shock absorption units 3. The primary shock absorption units 2 are uniformly matrix-distributed at the bottom of the battery box 1, and are used for primary shock absorption of the battery box 1. They can quickly offset the high-frequency, small-amplitude vibrations generated during vehicle operation, such as the instantaneous impact caused by road bumps. This uniform matrix distribution design can ensure that the primary shock absorption units 2 are evenly stressed, avoiding local overload that could lead to shock absorption failure. At the same time, it can cover the key stress areas at the bottom of the battery box 1, ensuring the comprehensiveness of the shock absorption effect and providing a preliminary vibration protection barrier for the battery box 1. The secondary damping unit 3, comprising multiple secondary damping units 3, is fixedly connected to the primary damping unit 2 and is used for secondary damping of the battery box 1. It primarily absorbs low-frequency, high-amplitude vibrations not completely offset by the primary damping unit 2, such as continuous vibrations generated during rapid vehicle acceleration, sudden braking, or driving over uneven road surfaces, forming a "dual-protection" damping system. This dual damping system can achieve layered filtering of vibrations of different frequencies and amplitudes, overcoming the limitations of a single damping structure and significantly reducing the impact of vibration on the internal cells and wiring of the battery box 1, effectively extending the service life and operational stability of the battery box 1. The secondary damping unit 3 includes multiple upper arc-shaped stress-dissipating plates 31, multiple lower arc-shaped stress-dissipating plates 32, and a support plate 33. The upper arc-shaped stress-dissipating plate 31 and the lower arc-shaped stress-dissipating plate 32 are arranged one-to-one to form multiple independent buffer chambers, which can realize the layered absorption and dispersion of vibration, avoiding the concentrated transmission of vibration to the battery box 1. The independent buffer chambers do not interfere with each other and can accurately absorb vibrations at different locations. At the same time, the chamber structure can effectively disperse vibration energy, converting longitudinal vibration into lateral stress, further weakening the vibration intensity, and providing assistance for the shock absorption effect of the upper arc-shaped stress-dissipating plate 31 and the lower arc-shaped stress-dissipating plate 32. Multiple upper arc-shaped stress-dissipating plates 31 are detachably connected to the support plate 33 and abut against the lower arc-shaped stress-dissipating plate 32. The abutment is filled with elastic buffer pads, which not only ensures the effective transmission of force, but also further improves the buffering effect. The elastic buffer pads can fill the gap at the abutment of the upper arc-shaped stress-dissipating plate 31 and the lower arc-shaped stress-dissipating plate 32, avoiding hard collisions between the two during vibration. At the same time, they have good elastic recovery ability, which can help absorb some residual vibration and reduce wear between the upper arc-shaped stress-dissipating plate 31 and the lower arc-shaped stress-dissipating plate 32.

[0022] The buffer pad structure also includes a top plate 4, which is usually made of high-strength carbon fiber composite material. It is lightweight, impact-resistant, and corrosion-resistant. The battery box 1 is placed on the top plate 4. Compared with traditional metal materials, the high-strength carbon fiber composite material used in the top plate 4 significantly reduces the overall weight while ensuring structural strength, which meets the core requirement of lightweighting for new energy vehicles. Its impact resistance can withstand accidental impacts during vehicle operation, and its corrosion resistance can adapt to the complex working environment of the vehicle chassis, preventing the top plate 4 from getting damp and rusted, thus affecting the structural stability. The top plate 4 has an anti-slip and wear-resistant coating to prevent the battery box from shifting during vibration. The anti-slip and wear-resistant coating on the surface of the top plate 4 not only increases the friction between the battery box 1 and the top plate 4, but also resists friction wear during daily use, keeps the surface of the top plate 4 flat, and ensures that the battery box 1 is always in a stable installation position, avoiding problems such as poor contact of the battery cells and damage to the circuit inside the battery box 1 caused by displacement. At the same time, the top plate 4 has an integrated buffer layer that can help absorb some vibration energy. The buffer layer inside the top plate 4 is made of flexible elastic material, which can work together with the primary damping unit 2 and the secondary damping unit 3 to further filter out minor vibrations and reduce the vibration transmitted to the inside of the battery box 1, providing all-round vibration protection for the battery box 1. The primary damping unit 2 includes a movable end 21, a spring 22, and a lower fixed end 23. One end of the movable end 21 is fixedly connected to the top plate 4 by bolts. An anti-loosening washer is provided at the connection point to prevent connection failure due to long-term vibration. The anti-loosening washer is made of an aging-resistant and vibration-resistant elastic material, which can compensate for the gap between the movable end 21 and the bolt connection of the top plate 4, resist the risk of loosening caused by long-term vibration, ensure the firmness of the connection between the primary damping unit 2 and the top plate 4, and avoid abnormal noise or damping failure due to loose connection. The other end is set in the lower fixed end 23 and is slidably connected to the lower fixed end 23. The sliding mating surface is treated with wear-resistant lubrication to reduce friction loss and improve the damping response speed. The wear-resistant lubrication treatment of the sliding mating surface between the movable end 21 and the lower fixed end 23 can reduce the frictional resistance between the two, ensure that the movable end 21 can respond quickly and slide flexibly when vibration occurs, and at the same time reduce the wear of the components of the movable end 21 and the lower fixed end 23, extending the service life of the primary damping unit 2.

[0023] The two ends of the spring 22 abut against the movable end 21 and the lower fixed end 23, respectively. The spring 22 is made of high temperature resistant and fatigue resistant alloy spring, which can adapt to the temperature environment when the battery is working and has good elastic recovery ability, ensuring that it can maintain stable shock absorption performance after long-term use. The battery in the battery box 1 will generate a certain amount of heat during the operation of the battery. The high temperature resistant alloy spring used in the first-level shock absorption unit 2 can maintain stable performance within this temperature range and will not experience elastic decay due to high temperature. Its fatigue resistance can cope with the frequent vibration during long-term vehicle driving and avoid problems such as spring 22 breaking or deforming.

[0024] The movable end 21 and the lower fixed end 23 form a pneumatic rod structure. The pneumatic rod can be filled with inert gas, which works in conjunction with the spring 22 to form a shock absorption effect. The inert gas filled inside the pneumatic rod structure formed by the movable end 21 and the lower fixed end 23 has stable chemical properties and will not undergo chemical reactions due to temperature changes or vibration impacts, which can ensure the long-term stable operation of the pneumatic rod. When working in conjunction with the spring 22 of the first-stage shock absorption unit 2, it can achieve the dual effect of "elastic buffering + pneumatic buffering", which greatly improves the shock absorption performance of the first-stage shock absorption unit 2. When subjected to instantaneous impact, the pneumatic rod can quickly buffer and slow down the compression speed of the spring, preventing excessive deformation of the spring 22. Instantaneous impact may cause the spring 22 to compress rapidly or even deform excessively. The buffering effect of the pneumatic rod, composed of the movable end 21 and the lower fixed end 23, can effectively alleviate this problem, protect the structural integrity of the spring 22, and reduce the direct transmission of impact force to the battery box 1. At the same time, during the vibration recovery process, the pneumatic rod can assist the spring in restoring, improve the stability and response efficiency of the shock absorption system, and effectively avoid the occurrence of resonance. Resonance can cause serious damage to the battery box 1. The coordinated restoring effect of the pneumatic rod and the spring 22 can adjust the natural frequency of the first-stage shock absorption unit 2, avoiding resonance with the vibration frequency during vehicle operation, and further ensuring the safety of the battery box 1.

[0025] The bottom of the support plate 33 has multiple mounting slots 331, which are evenly distributed along the length of the support plate 33. The upper arc-shaped stress-relief plate 31 is slidably connected to the mounting slots 331. The sliding connection facilitates the disassembly, maintenance, and replacement of the upper arc-shaped stress-relief plate. Stress-relief plates with different curvatures and hardness can be replaced according to actual shock absorption requirements. The upper arc-shaped stress-relief plate 31 is slidably connected to the mounting slots 331 of the support plate 33, eliminating the need for complicated disassembly tools. Operators can quickly disassemble and assemble the upper arc-shaped stress-relief plate 31, facilitating daily maintenance and troubleshooting. At the same time, the specifications of the upper arc-shaped stress-relief plate 31 can be flexibly adjusted according to actual needs such as road conditions and the weight of the battery box 1 to adapt to different shock absorption scenarios. The secondary damping unit 3 also includes a fixing plate 34. The fixing plate 34 is made of high-strength steel plate and has good structural rigidity. It can provide stable support for the lower arc-shaped stress-dissipating plate 32. The fixing plate 34 of the secondary damping unit 3 is made of high-strength steel plate and its high-strength steel plate stamping process can ensure the structural accuracy and rigidity of the fixing plate 34. It can stably bear the vibration force transmitted by the lower arc-shaped stress-dissipating plate 32 and prevent the fixing plate 34 from deforming or breaking. It provides a stable support foundation for the secondary damping unit 3. The fixing plate 34 has multiple mounting grooves 341, and the lower arc-shaped stress-dissipating plate 32 slides in the mounting grooves 341. The connection, mounting slot 1 331 and mounting slot 2 341 both have a "T" shaped cross section. The T-shaped structure can achieve precise positioning of the upper and lower arc-shaped stress-relief plates, preventing them from falling off or shifting during vibration, while also improving the firmness of the connection. The T-shaped structure adopted by mounting slot 1 331 of support plate 33 and mounting slot 2 341 of fixing plate 34 can fix the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32 from both the top and bottom and left and right directions, avoiding problems such as the two stress-relief plates moving or falling off during vibration, ensuring the structural stability of the secondary damping unit 3, and improving the force transmission efficiency.

[0026] The upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32 have the same cross-sectional structure, both adopting an arc-shaped curved surface design. The curvature of the curved surface is precisely calculated, which can convert the received longitudinal vibration into lateral dispersion force, greatly reducing the vibration intensity. The arc-shaped curved surface design adopted by the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32 can absorb vibration energy by utilizing the elastic deformation of the curved surface. At the same time, the longitudinal vibration is converted into lateral dispersion force through the curved surface guidance, realizing the dispersion of vibration energy. Compared with the planar structure, the vibration reduction effect of the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32 is more significant and more uniform.

[0027] The ends of both the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32 are rounded. The rounded corners not only prevent stress concentration and cracking damage of the stress-relief plate during long-term vibration, but also prevent scratches to operators during installation, thus improving safety. Long-term vibration can cause stress concentration at the ends of the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32. The rounded corners can effectively disperse the stress and extend the service life of the upper arc-shaped stress-relief plate 31 and the lower arc-shaped stress-relief plate 32. At the same time, the rounded end design can prevent operators from being scratched by sharp edges during installation and maintenance, thus improving operational safety. Both the upper and lower arc-shaped stress relief plates are made of a composite material of elastic rubber and high-strength plastic, which combines elastic buffering and structural strength. The upper arc-shaped stress relief plate 31 and the lower arc-shaped stress relief plate 32 are made of a composite material of elastic rubber and high-strength plastic. The elastic rubber can provide good elastic deformation capability to achieve effective vibration buffering, while the high-strength plastic ensures the structural rigidity of the upper arc-shaped stress relief plate 31 and the lower arc-shaped stress relief plate 32 and avoids excessive deformation during the stress process. The combination of the two can take into account both buffering performance and structural stability, and adapt to the stress requirements during the vibration reduction process.

[0028] The fixing plate 34 has a U-shaped cross-section and is used to fix multiple lower arc-shaped stress-relief plates 32. The U-shaped structure can limit the lower arc-shaped stress-relief plates 32 in all directions, enhancing the installation stability of the lower arc-shaped stress-relief plates. The fixing plate 34 of the secondary damping unit 3 adopts a U-shaped structure with a wrap-around design, which can limit the lower arc-shaped stress-relief plates 32 from three directions. Compared with the planar fixing structure, the limiting effect is more stable and can effectively resist the impact force brought by large vibrations, preventing the lower arc-shaped stress-relief plates 32 from shifting or falling off. At the same time, the two sides of the U-shaped fixing plate The sidewalls can help disperse vibration energy, preventing vibration from concentrating on a single shock-absorbing plate and improving the overall shock absorption effect of the secondary damping unit. The bottom of the fixing plate 34 is provided with anti-slip protrusions, which can increase the friction with the mounting surface and prevent the overall buffer pad structure from shifting. The anti-slip protrusions at the bottom of the fixing plate 34 can increase the frictional resistance between the fixing plate 34 and the mounting surface. Even under extreme conditions such as sharp turns and sudden braking, it can effectively prevent the entire buffer pad structure from shifting, ensuring that the damping structure is always in the correct installation position and guaranteeing the stability of the damping effect.

[0029] The upper arc-shaped stress-relief plate 31 includes a mounting strip 311, an arc-shaped plate 312, and a limiting strip 313. The mounting strip 311 has a "T"-shaped cross-section and is adapted to the shape of the mounting groove 331. The fit gap between the mounting strip 311 and the mounting groove 331 is controlled at 0.1-0.3mm, which ensures smooth sliding and avoids loosening and abnormal noise during vibration. The precise fit gap between the mounting strip 311 of the upper arc-shaped stress-relief plate 31 and the mounting groove 331 of the support plate 33 ensures that the mounting strip 311 slides flexibly in the mounting groove 331, which facilitates the assembly and disassembly of the upper arc-shaped stress-relief plate 31. At the same time, it can prevent gaps from forming between the mounting strip 311 and the mounting groove 331 during vibration, prevent loosening and abnormal noise, and improve the user experience of the shock-absorbing structure. The mounting strip 311 is fixedly connected to the outside of the arc plate 312. The connection method adopts one-piece injection molding to ensure connection strength and avoid long-term vibration causing detachment. The mounting strip 311 of the upper arc-shaped stress relief plate 31 and the arc plate 312 are integrally injection molded, which can form a seamless connection between the two, making the overall structure stronger and able to resist the tensile force caused by long-term vibration. This prevents the mounting strip 311 from separating from the arc plate 312, which would cause the upper arc-shaped stress relief plate 31 to fail, thus improving the reliability of the structure. The limiting strip 313 is fixedly installed on the inner side of the arc-shaped plate 312. The limiting strip 313 is made of elastic material and can limit the maximum contact force between the upper arc-shaped stress relief plate 31 and the lower arc-shaped stress relief plate 32, preventing excessive compression from damaging the stress relief plate. At the same time, it can also help absorb some vibration energy. The limiting strip 313 of the upper arc-shaped stress relief plate 31 is made of elastic material and can buffer the compressive force between the upper arc-shaped stress relief plate 31 and the lower arc-shaped stress relief plate 32 through its own deformation, avoiding excessive compression from causing the two stress relief plates to crack or deform. At the same time, its elastic properties can help absorb some residual vibration energy, further improving the buffering effect.

[0030] The buffer pad structure also includes multiple connecting blocks 5. The cross-section of the connecting block 5 is double-conical. The double-conical structure can achieve precise docking of two adjacent fixed plates 34, while enhancing the structural strength of the connection. The double-conical structure of the connecting block 5 can precisely fit with the docking parts of the fixed plates 34 of the two adjacent secondary damping units 3 at both ends, achieving rapid positioning and docking. At the same time, the conical structure can disperse the force on the connection part, avoid local force concentration, enhance the structural strength of the connection part of the adjacent fixed plates 34, and prevent the connection part from breaking.

[0031] The connecting block 5 is made of wear-resistant elastic material, which can absorb some vibration energy while transmitting force, reducing vibration transmission between adjacent fixed plates. It can withstand vibration transmission and friction between two adjacent fixed plates 34, preventing rapid wear of the connecting block 5 itself. Its elastic properties also absorb some vibration energy, reducing vibration transmission between adjacent fixed plates 34 and improving the overall shock absorption consistency of the buffer pad structure. Multiple connecting blocks 5 are fitted with two adjacent fixed plates 34 to connect them. The fitting method uses an interference fit to ensure a tight connection, preventing loosening due to long-term vibration. It also facilitates overall disassembly and maintenance, allowing the connecting block 5 to fit tightly with the fixed plate 34 without gaps, effectively resisting the risk of loosening caused by long-term vibration. Disassembly and assembly only require applying appropriate external force, balancing tightness and ease of disassembly. Through the connecting action of the connecting block 5, multiple secondary shock absorption units can be integrated into a whole, improving the overall stability and shock absorption consistency of the buffer pad structure, preventing weak shock absorption in individual secondary shock absorption units 3, and further enhancing the shock absorption protection effect of the buffer pad structure for the battery box 1.

[0032] In summary, the working principle of a multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes is described below: The battery box 1 is placed on the top plate 4. The anti-slip and wear-resistant coating on the surface of the top plate 4 prevents the battery box 1 from shifting during vibration. The internal buffer layer first helps absorb some of the vibration energy, providing initial protection for the battery box 1. The top plate 4 is made of high-strength carbon fiber composite material, which combines lightweight and structural strength, and can stably support the battery box 1 and transmit vibration to the primary damping unit 2. The primary damping unit 2 consists of multiple primary damping units 2 evenly distributed in a matrix. The movable end 21 of the primary damping unit 2 is fixed to the top plate 4 by bolts, and the lower fixed end 23 is connected to the secondary damping unit 3. The movable end 21 and the lower fixed end 23 slide together to form a pneumatic rod structure, which is filled with inert gas and forms a synergistic damping with the spring 22. When the vehicle generates high-frequency, small-amplitude vibrations, the spring 22 quickly buffers the vibration through elastic deformation. The pneumatic rod simultaneously slows down the compression speed of the spring 22 and assists in its return, avoiding excessive deformation and resonance of the spring 22, and quickly canceling out such vibrations, thus completing the primary damping.

[0033] Low-frequency, high-amplitude vibrations not completely offset by the primary damping unit 2 are transmitted to the secondary damping unit 3, which is fixedly connected to the primary damping unit 2. This system consists of multiple secondary damping units 3 integrated into a whole via connecting blocks 5. In each secondary damping unit 3, the support plate 33 is slidably connected to the upper arc-shaped force-dispersing plate 31 via mounting groove 1 331, and the fixing plate 34 is slidably connected to the lower arc-shaped force-dispersing plate 32 via mounting groove 2 341. The T-shaped structure of mounting groove 1 331 and mounting groove 2 341 precisely limits the position of the force-dispersing plate. The upper arc-shaped force-dispersing plate 31 and the lower arc-shaped force-dispersing plate 32 form independent buffer chambers, with elastic buffer pads filling the contact points. Both are made of curved surfaces, elastic rubber, and high-strength plastic composite materials, which can convert longitudinal vibrations into lateral force dispersion, absorbing and dispersing vibration energy in layers to complete the secondary damping.

[0034] The mounting strip 311 of the upper arc-shaped stress-dissipating plate 31 is integrally injection molded with the arc-shaped plate 312. The limiting strip 313 limits the maximum contact force between the upper and lower stress-dissipating plates to prevent damage to the components. The U-shaped structure of the fixing plate 34 limits the lower arc-shaped stress-dissipating plate 32 in all directions, and the side walls help to disperse vibration. The material and structural design of each component ensures that the entire buffer pad structure works stably for a long time, ultimately achieving comprehensive shock absorption and protection for the battery box 1 and avoiding damage to the internal cells and circuits caused by vibration.

[0035] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes, characterized in that, include: Battery box (1) Multiple primary damping units (2) are used to provide primary damping for the battery box (1); Multiple secondary damping units (3) are fixedly connected to the primary damping unit (2) for secondary damping of the battery box (1); the secondary damping unit (3) includes multiple upper arc-shaped stress-dispersing plates (31), multiple lower arc-shaped stress-dispersing plates (32) and a support plate (33); the multiple upper arc-shaped stress-dispersing plates (31) are detachably connected to the support plate (33) and abut against the lower arc-shaped stress-dispersing plates (32).

2. The multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes according to claim 1, characterized in that, It also includes a top plate (4), on which the battery box (1) is placed; the first-level shock absorption unit (2) includes a movable end (21), a spring (22) and a lower fixed end (23). One end of the movable end (21) is fixedly connected to the top plate (4), and the other end is set inside the lower fixed end (23) and slidably connected to the lower fixed end (23); the two ends of the spring (22) abut against the movable end (21) and the lower fixed end (23) respectively.

3. The multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes according to claim 2, characterized in that, The movable end (21) and the lower fixed end (23) form a pneumatic rod structure.

4. The multi-chamber buffer pad structure for shock absorption and protection of new energy battery box as described in claim 2, characterized in that, The support plate (33) has multiple mounting slots (331) at its bottom. The upper arc-shaped stress-dispersing plate (31) is slidably connected to the mounting slot (331). The secondary damping unit (3) also includes a fixing plate (34). The fixing plate (34) has multiple mounting slots (341) on it. The lower arc-shaped stress-dispersing plate (32) is slidably connected to the mounting slot (341). The cross-sections of the mounting slots (331) and (341) are both "T" shaped.

5. The multi-chamber buffer pad structure for shock absorption and protection of new energy battery boxes according to claim 4, characterized in that, The upper arc-shaped stress-relief plate (31) and the lower arc-shaped stress-relief plate (32) have the same cross-sectional structure, and the ends of the upper arc-shaped stress-relief plate (31) and the lower arc-shaped stress-relief plate (32) are rounded.

6. The multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box according to claim 4, characterized in that, The fixed plate (34) has a "U" shaped cross section and is used to fix multiple lower arc-shaped force-dispersing plates (32).

7. The multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box according to claim 5, characterized in that, The upper arc-shaped stress-dispersing plate (31) includes an installation strip (311), an arc-shaped plate (312), and a limiting strip (313); the installation strip (311) is fixedly connected to the outside of the arc-shaped plate (312), and the limiting strip (313) is fixedly installed on the inside of the arc-shaped plate (312).

8. A multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box according to claim 6, characterized in that, It also includes a plurality of connecting blocks (5), which are fitted with two adjacent fixing plates (34) for connecting the two adjacent fixing plates (34).

9. A multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box according to claim 7, characterized in that, The mounting strip (311) has a "T" shaped cross section and is adapted to the shape of the mounting groove (331).

10. A multi-chamber buffer pad structure for shock absorption and protection of a new energy battery box according to claim 8, characterized in that, The cross-section of the connecting block (5) is double-conical.

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