A lithium battery module cushioning and shock absorbing support structure

Abstract

This invention relates to the field of lithium battery structural protection technology, specifically to a buffer and shock-absorbing support structure for a lithium battery module. The structure includes a protective box and a protective cover detachably connected to it. The protective box houses a battery pack, and its inner cavity contains a buffer pad, a first side fixing plate, and a second side fixing plate, forming a buffer chamber. A buffer plate is slidably disposed within the buffer chamber, and the battery pack is connected to the buffer plate via a side push rod. Buffer boxes are located on the side walls and bottom of the protective box. Buffer rods that cooperate with the buffer boxes are disposed on the battery pack and the buffer plate, and the bottom is synchronously followed by a linkage component. The buffer boxes contain damping blocks and inflatable rubber pads, and the damping stroke and damping intensity are adjusted through a lifting component and a pressure supply component. This invention can achieve stable support and shock absorption for the battery pack under multi-directional vibration conditions, and has the advantages of adjustable damping, good buffering effect, and high safety.

Description

Technical Field

[0001] This invention relates to the field of lithium battery structural protection technology, and in particular to a buffer and shock absorption support structure for lithium battery modules. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage systems, the structural safety and operational stability of lithium battery modules, as core energy units, are receiving increasing attention. In vehicle applications, battery modules are typically installed in the vehicle body or chassis structure, and during driving, they are subjected to vibration and impact loads caused by factors such as uneven road surfaces, vehicle acceleration and deceleration, and steering.

[0003] Chinese utility model patent No. 201220632584.0 discloses an impact-resistant structure for a power battery pack; it includes a housing and a battery disposed inside the housing, wherein a profile frame is disposed inside the housing, and the profile frame has frame holes corresponding to the positions of the battery.

[0004] However, in practical applications, as operating conditions become more complex, the existing technical solutions may still have certain limitations. For example, when the battery module is subjected to multi-directional coupled vibration, the damping effect is poor; at the same time, most of the related buffer structures are designed with fixed parameters, and their adaptability is limited under different vibration intensities or operating conditions. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a buffer and shock absorption support structure for lithium battery modules, so as to solve the problem that the existing buffer structures are not effective and have limited adaptability under multi-directional vibration conditions.

[0006] To achieve the above objectives, the present invention provides a buffer and shock-absorbing support structure for a lithium battery module, comprising a protective box and a protective cover detachably connected thereto. The protective box houses a battery pack and a buffer pad. First side plates are provided at its left and right ends, and second side plates are provided at its front and rear ends, forming a buffer cavity with the side walls. A buffer plate is slidably disposed within the buffer cavity. A side push rod is provided on the side of the battery pack and connected to the buffer plate. A buffer box corresponding to the buffer plate is provided on the side wall of the protective box, and a buffer rod cooperating with the buffer box is provided on the buffer plate. A buffer rod is also provided at the bottom of the battery pack. A linkage component is provided at the bottom of the protective box, and a buffer box is also provided on the linkage component, corresponding to the buffer rod at the bottom of the battery pack. A damping block is provided inside the buffer box, and an inflatable rubber pad is provided on its inner wall to provide damping and limiting for the buffer rod.

[0007] Furthermore, the side push rod is a telescopic structure, and it is in the retracted limit position when the battery pack is stationary, so that the side push rod and the battery pack are closely matched, and it can respond quickly and push the buffer plate to move when the battery pack vibrates.

[0008] Furthermore, the side push rod is connected to the battery pack via a universal assembly. The universal assembly includes a sliding groove disposed in the side wall of the battery pack. A sliding rod is disposed between the upper and lower ends inside the sliding groove. A slider is slidably disposed on the sliding rod. A first guide frame is fixedly connected to the slider. A first guide rod is fixedly disposed between the two ends of the first guide frame. A first guide block is slidably disposed on the first guide rod. The first guide block is connected to one end of the side push rod.

[0009] Furthermore, the buffer box includes a box body, and a damping block is provided inside the box body. The top of the damping block has a funnel-shaped structure to guide the insertion of the buffer rod.

[0010] Furthermore, the bottom of the damping block is a sealed structure, which abuts against the bottom of the damping block when the buffer rod displacement exceeds the predetermined stroke, so as to form a rigid support.

[0011] Furthermore, the damping block is vertically and flexibly mounted inside the housing via a lifting assembly. The lifting assembly includes an internally threaded sleeve fixedly mounted at the bottom axis of the damping block, and a screw rotatably mounted at the center of the bottom of the housing, the screw being threadedly connected to the internally threaded sleeve. A first bevel gear is fixedly mounted on the outside of the screw, and a second bevel gear meshing with the first bevel gear is rotatably mounted on the inner wall of the housing. A drive motor for driving the second bevel gear to rotate is mounted on the outer wall of the housing. The drive motor drives the second bevel gear to rotate, causing the first bevel gear and the screw to rotate, thus moving the internally threaded sleeve axially along the screw, thereby adjusting the height of the damping block within the housing. A limiting part is provided between the outer wall of the damping block and the inner wall of the housing, the limiting part being used to restrict the damping block to move only axially relative to the housing and to restrict its circumferential rotation.

[0012] Furthermore, the internal air pressure of the inflatable pad is adjusted by a pressure supply assembly. The pressure supply assembly is located on the outer wall of the box body and includes a piston cylinder fixedly installed on the outer wall of the box body. A piston plate is slidably arranged axially inside the piston cylinder. An electric push rod is fixedly installed at the top of the inner cavity of the piston cylinder, and the output end of the electric push rod is fixedly connected to the piston plate. A vent pipe is connected to the bottom of the piston cylinder. The vent pipe passes through the box body wall and communicates with the inner cavity of the inflatable pad. Thus, the piston plate is driven to move inside the piston cylinder by the electric push rod to change the internal air pressure of the inflatable pad, thereby achieving the adjustment of its internal air pressure.

[0013] Furthermore, the linkage component includes a bottom guide rail slidably disposed at the bottom of the protective box. The bottom guide rail is horizontally disposed along the width direction of the bottom of the protective box and can slide relative to the protective box. A buffer box is also fixedly disposed on the bottom guide rail. A second guide frame is disposed at each end of the bottom guide rail. A second guide rod is fixedly disposed between the two second guide frames. A second guide block is slidably disposed on the second guide rod. The second guide block is fixed to the end of the bottom guide rail. An end connecting rod is fixedly connected to the middle of the side of the second guide frame away from the bottom guide rail. The end connecting rod passes through a second side plate and is fixedly connected to the buffer plate.

[0014] Furthermore, the bottom guide rail is connected to the second guide block via a telescopic plate. One end of the telescopic plate is fixedly connected to the bottom guide rail, and the other end is fixedly connected to the second guide block. A side connecting rod is fixedly provided on the side of the bottom guide rail. The side connecting rod passes through the first side fixing plate and is fixedly connected to the buffer plate to realize the linkage guidance of the buffer plate in the X direction.

[0015] Furthermore, the bottom of the protective cover is provided with cushioning cotton for contacting the upper surface of the battery pack, a spring damper is connected between the cushioning plate and the inner wall of the protective box, and a cushioning block is filled between the cushioning plate and the protective box.

[0016] This invention achieves synchronous support and shock absorption for the battery pack under multi-directional vibration conditions by setting a lateral buffer structure around the battery pack and linking it with a buffer box driven by a linkage component at the bottom. This effectively prevents the battery pack from shaking and colliding within the protective box. At the same time, by setting adjustable height damping blocks and inflatable pads inside the buffer box, and cooperating with a pressure supply component to adjust the air pressure, the damping performance can be adjusted according to the vibration intensity. It provides flexible buffering under small vibrations and forms rigid limiting under large vibrations, thus balancing comfort and safety. Attached Figure Description

[0017] 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 only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective box according to an embodiment of the present invention; Figure 3 This is a top view of the internal structure of the protective box according to an embodiment of the present invention; Figure 4This is a schematic diagram of the battery pack structure according to an embodiment of the present invention; Figure 5 Embodiments of the present invention Figure 4 A magnified structural diagram of A in the middle; Figure 6 This is a schematic diagram of the buffer pad structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the buffer cavity structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the first side fixing plate structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the second side fixing plate structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the buffer plate structure according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the internal structure of the buffer box according to an embodiment of the present invention; Figure 12 Embodiments of the present invention Figure 11 A magnified structural diagram of B in the diagram; Figure 13 This is a schematic diagram of the linkage component structure according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the bottom structure of the battery pack according to an embodiment of the present invention.

[0019] The diagram is marked as follows: 1. Protective box; 11. Buffer pad; 12. First side fixing plate; 13. Second side fixing plate; 2. Protective cover; 3. Battery pack; 31. Slide groove; 32. Slide rod; 321. Slider; 33. First guide frame; 331. First guide rod; 34. First guide block; 35. Side push rod; 4. Buffer plate; 42. Spring damper; 43. Buffer block; 5. Buffer box; 51. Box body; 52. Damping block; 53. Lifting assembly; 531. Internal threaded sleeve; 5 32. Screw; 533. First bevel gear; 534. Second bevel gear; 535. Drive motor; 54. Inflatable rubber pad; 55. Pressure supply assembly; 551. Piston cylinder; 552. Piston plate; 553. Electric push rod; 554. Vent pipe; 6. Linkage assembly; 61. End connecting rod; 62. Second guide frame; 621. Second guide rod; 622. Second guide block; 63. Bottom guide rail; 64. Side connecting rod; 65. Telescopic plate; 7. Buffer rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14As shown, in this embodiment, a lithium battery module buffer and shock absorption support structure includes a protective box 1 and a protective cover 2 detachably connected to the protective box 1. The protective box 1 is used to accommodate the battery pack 3, and the protective cover 2 is used to seal and protect the battery pack 3. A buffer pad 11 is provided at the bottom of the inner cavity of the protective box 1 to provide basic support and primary buffering for the bottom of the battery pack 3. First side plates 12 are provided at the left and right ends of the inner cavity of the protective box 1, and second side plates 13 are provided at the front and rear ends. The first side plates 12 and the second side plates 13 together with the side walls of the protective box 1 form four sets of buffer cavities. A buffer plate 4 is slidably disposed in each set of buffer cavities, so that the buffer plate 4 can be displaced in the corresponding direction. Side push rods 35 are provided on all four sides of the battery pack 3. The side push rods 35 are telescopic rods. The other end of the side push rods 35 passes through the first side fixing plate 12 or the second side fixing plate 13 and is connected to the buffer plate 4. So when the battery pack 3 vibrates and displaces, the vibration can be transmitted to the buffer plate 4 through the side push rods 35, so that the buffer plate 4 slides in the buffer cavity to absorb the vibration energy. Specifically, when the battery pack 3 is in a stable and non-shaking state, the side push rods 35 are in the retracted limit position. When the battery pack 3 vibrates and displaces, the side push rods 35 can respond quickly and transmit the displacement to the buffer plate 4 in time, thereby pushing the buffer plate 4 to move to achieve effective absorption and buffering of vibration energy. At the same time, at least one set of buffer boxes 5 corresponding to the buffer plate 4 are respectively provided on the four side walls of the protective box 1. A buffer rod 7 corresponding to the buffer box 5 is also fixedly provided on the side of the buffer plate 4 near the buffer box 5 to provide damping and limiting effect on the movement of the buffer plate 4.

[0023] Furthermore, buffer rods 7 are installed at the four bottom corners of the battery pack 3, and two sets of linkage components 6 are installed at the bottom of the protective box 1. The two sets of linkage components 6 are symmetrically arranged on the left and right sides of the battery pack 3. Two sets of buffer boxes 5 are also fixedly installed on each set of linkage components 6, corresponding one-to-one with the buffer rods 7. Thus, when the battery pack 3 vibrates up and down, the buffer rods 7 are inserted into the corresponding buffer boxes 5 and generate a damping effect, realizing buffering and energy absorption in the bottom direction; so that the lateral buffering and bottom buffering are linked, improving the overall shock absorption efficiency.

[0024] The buffer box 5 includes a box body 51, inside which a damping block 52 is provided. The top of the damping block 52 has a funnel-shaped structure to guide the insertion of the buffer rod 7. The inner wall of the damping block 52 is provided with an inflatable rubber pad 54. When the buffer rod 7 is inserted into the damping block 52, it makes frictional contact with the inflatable rubber pad 54, thereby generating a damping force to absorb the vibration energy of the battery pack 3. At the same time, the bottom of the damping block 52 is a sealed structure. When the amplitude of the battery pack 3 is small, the buffer rod 7 mainly contacts the inflatable rubber pad 54 to achieve flexible damping. When the amplitude increases to a predetermined range, the buffer rod 7 will abut against the bottom of the damping block 52, thereby forming a rigid support to limit the excessive displacement of the battery pack 3, avoid structural damage, and achieve the synergistic effect of flexible buffering and rigid limiting.

[0025] Furthermore, to achieve adjustable buffering performance under different operating conditions, the height of the damping block 52 within the housing 51 is adjustable. A lifting assembly 53 is provided at the bottom of the damping block 52. The lifting assembly 53 includes an internally threaded sleeve 531 fixed to the bottom axis of the damping block 52, a screw 532 rotatably mounted at the bottom center of the housing 51 and screwed to the internally threaded sleeve 531, a first bevel gear 533 fixedly mounted outside the screw 532, a second bevel gear 534 rotatably mounted on the inner side wall of the housing 51 and meshing with the first bevel gear 533, and a drive motor 535 for driving the second bevel gear 534 to rotate on the outer side wall of the housing 51. The drive motor 535 drives the second bevel gear 534 to rotate. The rotation of the second bevel gear 534 drives the first bevel gear 533 and the screw 532 to rotate, causing the internal threaded sleeve 531 to drive the damping block 52 to move up and down axially, thereby adjusting the buffer stroke and the rigid support trigger position to adapt to different vibration environments. At the same time, a limiting part is provided between the outer wall of the damping block 52 and the inner wall of the box 51. The limiting part includes a guide protrusion provided on the outer wall of the damping block 52 along the axial direction and a guide groove provided on the inner wall of the box 51. The guide protrusion is embedded in the guide groove and slides with it, thereby limiting the damping block 52 circumferentially, so that it can only move up and down axially relative to the box 51 and cannot rotate, ensuring the stability of the lifting process.

[0026] Furthermore, the inflatable rubber pad 54 is a constrained elastic structure, which undergoes radial dimensional changes through elastic deformation when the air pressure changes. The internal air pressure of the inflatable rubber pad 54 is adjustable. A pressure supply assembly 55 is provided on the outer wall of the box body 51. The pressure supply assembly 55 includes a piston cylinder 551, a piston plate 552 slidably disposed inside the piston cylinder 551, an electric push rod 553 is provided at the top of the piston cylinder 551, and the output end of the electric push rod 553 is connected to the piston plate 552. A vent pipe 554 is connected to the bottom of the piston cylinder 551. The other end is connected to the inner cavity of the inflatable rubber pad 54. The piston plate 552 is driven to move inside the piston cylinder 551 by the electric push rod 553, thereby changing the gas pressure inside the piston cylinder 551. This pressure is then transmitted to the inside of the inflatable rubber pad 54 through the vent pipe 554, thus regulating the internal air pressure of the inflatable rubber pad 54. When the internal air pressure of the inflatable rubber pad 54 increases, its inner diameter decreases, thereby increasing the contact pressure between the buffer rod 7 and the inflatable rubber pad 54 and enhancing the damping effect. Conversely, when the air pressure decreases, the damping effect decreases, thus achieving continuous adjustment of the shock absorption performance.

[0027] Furthermore, to ensure that the side push rod 35 can still stably transmit force when the battery pack 3 undergoes multi-directional displacement, the side push rod 35 is connected to the battery pack 3 via a universal assembly. The universal assembly includes a groove 31 formed in the side wall of the battery pack 3, a slide rod 32 fixedly disposed between the upper and lower ends of the groove 31, a slider 321 slidably disposed on the slide rod 32, a first guide frame 33 fixedly disposed on the end face of the slider 321, a first guide rod 331 disposed on the first guide frame 33, and a first guide block 34 slidably disposed on the first guide rod 331. The first guide block 34 is fixedly connected to the side push rod 35, thereby enabling the side push rod 35 to move relative to the battery pack 3 in multiple directions, maintaining the connection and effectively transmitting vibration when the battery pack 3 vibrates in any direction.

[0028] Furthermore, the linkage component 6 includes a bottom guide rail 63 slidably disposed at the bottom of the protective box 1. The bottom guide rail 63 is arranged horizontally along the bottom of the protective box 1 and can slide relative to the protective box 1. A buffer box 5 is fixedly disposed on the bottom guide rail 63. Second guide frames 62 are fixedly disposed at both ends of the bottom guide rail 63. A second guide rod 621 is fixedly connected between the two second guide frames 62. A second guide block 622 is slidably disposed on the second guide rod 621. The second guide block 622 is fixed to the end of the bottom guide rail 63. An end cap is fixedly connected to the middle of the side of the second guide frame 62 away from the bottom guide rail 63. The connecting rod 61 has an end rod 61 that passes through the second side fixing plate 13 and is fixedly connected to the buffer plate 4 to guide the buffer plate 4 in the Y direction; the bottom guide rail 63 is connected to the second guide block 622 through the telescopic plate 65, one end of the telescopic plate 65 is fixedly connected to the bottom guide rail 63, and the other end is fixedly connected to the second guide block 622 to provide length compensation during the movement of the bottom guide rail 63; at the same time, a side connecting rod 64 is fixedly provided on the side of the bottom guide rail 63, the side connecting rod 64 passes through the first side fixing plate 12 and is fixedly connected to the buffer plate 4 to guide and link the buffer plate 4 in the X direction. Due to the weight of the battery pack 3 and the downward pressure exerted on the battery pack 3 by the protective cover 2 and its bottom buffer cotton, the buffer rod 7 at the bottom of the battery pack 3 always remains inserted into the buffer box 5 under normal use and vibration conditions. When the battery pack 3 vibrates vertically, the buffer rod 7 only undergoes axial relative displacement within the buffer box 5 and will not disengage from the buffer box 5, thus ensuring that the two are always in effective engagement. Therefore, when the battery pack 3 is displaced in the XY direction, the contact between the buffer rod 7 and the buffer box 5 can drive the buffer box 5 and the bottom guide rail 63 to move synchronously, so that the buffer box 5 set on the bottom guide rail 63 always maintains a corresponding position with the buffer rod 7 at the bottom of the battery pack 3, thereby ensuring the continuity and stability of the buffering effect.

[0029] Furthermore, a cushioning cotton is provided at the bottom of the protective cover 2 to provide auxiliary cushioning for the upper surface of the battery pack 3; a spring damper 42 is also connected between the buffer plate 4 and the inner wall of the protective box 1, and a buffer block 43 is filled therein to further improve the overall damping effect.

[0030] Furthermore, both the drive motor 535 and the electric push rod 553 are electrically connected to an external control system, such as the vehicle control system, to adjust the damping parameters according to different operating conditions. In off-road mode, the drive motor 535 is controlled to lower the damping block 52, thereby increasing the buffer stroke. At the same time, the electric push rod 553 is controlled to reduce the internal air pressure of the inflatable pad 54 to reduce the damping stiffness, thereby enhancing the absorption capacity of large impact vibrations, reducing peak loads and improving structural safety. In high-speed driving mode, the drive motor 535 is controlled to raise the damping block 52, reducing the buffer stroke. At the same time, the internal air pressure of the inflatable pad 54 is increased to increase the damping stiffness, thereby enhancing the overall support rigidity of the system, suppressing high-frequency micro-vibrations, and improving the stability and response performance of the battery pack 3.

[0031] Working principle: In use, the battery pack 3 is installed in the protective box 1 and pressed and fixed by the protective cover 2. When vibration occurs during vehicle operation, the battery pack 3 first undergoes displacement. Its lateral displacement is transmitted to the buffer plate 4 through the side push rod 35, causing the buffer plate 4 to slide in the buffer cavity. The buffer rod 7 on the buffer plate 4 cooperates with the buffer box 5 to generate damping, thereby absorbing the lateral vibration. At the same time, when the buffer rod 7 at the bottom of the battery pack 3 vibrates in the vertical direction, it generates axial relative movement in the buffer box 5, contacting the inflatable rubber pad 54 to form flexible damping. When the amplitude is large, it further abuts against the bottom of the damping block 52 to form rigid limiting, realizing graded buffering from flexible to rigid.

[0032] When the battery pack 3 undergoes a combined displacement in the XY direction, the contact action between the bottom buffer rod 7 and the buffer box 5 drives the linkage component 6 to slide at the bottom of the protective box 1, so that the buffer box 5 always remains in correspondence with the buffer rod 7, thereby ensuring the continuity and stability of the buffering effect; at the same time, the side push rod 35 achieves multi-degree-of-freedom connection through the universal component, ensuring that the force can still be stably transmitted under multi-directional vibration.

[0033] Furthermore, by adjusting the height of the damping block 52 within the housing 51 using the lifting assembly 53, the buffer stroke and rigid support trigger position can be changed; by adjusting the internal air pressure of the inflatable pad 54 using the pressure supply assembly 55, the contact tightness between it and the buffer rod 7 can be changed, thereby adjusting the damping magnitude and achieving adaptive adjustment of the shock absorption performance. Under different operating conditions, the control system can drive the motor 535 and the electric push rod 553 for adjustment, enabling the structure to have greater energy absorption capacity under large impact conditions and higher support rigidity under high-speed stable conditions, thereby achieving efficient, multi-directional, and adjustable buffer and shock absorption protection for the battery pack 3.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0035] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A buffer and shock-absorbing support structure for a lithium battery module, comprising a protective box (1) and a protective cover (2) detachably connected thereto, wherein a battery pack (3) is disposed inside the protective box (1), characterized in that: The protective box (1) is provided with a buffer pad (11), with first side plates (12) at its left and right ends and second side plates (13) at its front and rear ends, forming a buffer cavity with the side wall. A buffer plate (4) is slidably provided in the buffer cavity. A side push rod (35) is provided on the side of the battery pack (3) and connected to the buffer plate (4). A buffer box (5) corresponding to the buffer plate (4) is provided on the side wall of the protective box (1). A buffer rod (7) cooperating with the buffer box (5) is provided on the buffer plate (4). A buffer rod (7) is also provided at the bottom of the battery pack (3). A linkage component (6) is provided at the bottom of the protective box (1). A buffer box (5) is also provided on the linkage component (6) and corresponds to the buffer rod (7) at the bottom of the battery pack (3). A damping block (52) is provided in the buffer box (5), and an inflatable rubber pad (54) is provided on its inner wall to provide damping and limiting for the buffer rod (7).

2. The lithium battery module buffer and shock absorption support structure according to claim 1, characterized in that, The side push rod (35) is a telescopic structure and is in the retracted limit position when the battery pack (3) is stationary, so that the side push rod (35) and the battery pack (3) are closely matched, and can quickly respond and push the buffer plate (4) to move when the battery pack (3) vibrates.

3. The lithium battery module buffer and shock absorption support structure according to claim 1, characterized in that: The side push rod (35) is connected to the battery pack (3) via a universal assembly. The universal assembly includes a groove (31) disposed in the side wall of the battery pack (3). A slide rod (32) is disposed between the upper and lower ends inside the groove (31). A slider (321) is slidably disposed on the slide rod (32). A first guide frame (33) is fixedly connected to the slider (321). A first guide rod (331) is fixedly disposed between the two ends of the first guide frame (33). A first guide block (34) is slidably disposed on the first guide rod (331). The first guide block (34) is connected to one end of the side push rod (35).

4. The lithium battery module buffer and shock absorption support structure according to claim 1, characterized in that: The buffer box (5) includes a box body (51), and a damping block (52) is provided inside the box body (51). The top of the damping block (52) has a funnel-shaped structure to guide the insertion of the buffer rod (7).

5. The lithium battery module buffer and shock absorption support structure according to claim 4, characterized in that: The bottom of the damping block (52) is a sealed structure. When the buffer rod (7) is displaced beyond the predetermined stroke, it abuts against the bottom of the damping block (52) to form a rigid support.

6. The lithium battery module buffer and shock absorption support structure according to claim 4, characterized in that: The damping block (52) is vertically and flexibly mounted inside the housing (51) via a lifting assembly (53). The lifting assembly (53) includes an internally threaded sleeve (531) fixedly mounted at the bottom axis of the damping block (52). A screw (532) is rotatably mounted at the bottom center of the housing (51), and the screw (532) is threadedly connected to the internally threaded sleeve (531). A first bevel gear (533) is fixedly mounted on the outside of the screw (532), and a second bevel gear (534) is rotatably mounted on the inner wall of the housing (51) and meshes with the first bevel gear (533). A drive motor (535) is provided on the wall to drive the second bevel gear (534) to rotate. The drive motor (535) drives the second bevel gear (534) to rotate, which in turn drives the first bevel gear (533) and the screw (532) to rotate, causing the inner threaded sleeve (531) to move axially along the screw (532), thereby driving the damping block (52) to achieve lifting and lowering adjustment within the box (51). A limiting part is provided between the outer wall of the damping block (52) and the inner wall of the box (51). The limiting part is used to restrict the damping block (52) to move only axially relative to the box (51) and to restrict its circumferential rotation.

7. The lithium battery module buffer and shock absorption support structure according to claim 4, characterized in that: The internal air pressure of the inflatable rubber pad (54) is adjusted by a pressure supply assembly (55). The pressure supply assembly (55) is located on the outer wall of the box body (51). The pressure supply assembly (55) includes a piston cylinder (551) fixedly installed on the outer wall of the box body (51). A piston plate (552) is slidably arranged in the piston cylinder (551) along the axial direction. An electric push rod (553) is fixedly arranged at the top of the inner cavity of the piston cylinder (551). The output end of the electric push rod (553) is fixedly connected to the piston plate (552). A vent pipe (554) is connected to the bottom of the piston cylinder (551). The vent pipe (554) passes through the wall of the box body (51) and communicates with the inner cavity of the inflatable rubber pad (54). Thus, the piston plate (552) is driven to move in the piston cylinder (551) by the electric push rod (553) to change the internal air pressure of the inflatable rubber pad (54) and realize the adjustment of its internal air pressure.

8. The lithium battery module buffer and shock absorption support structure according to claim 1, characterized in that: The linkage component (6) includes a bottom guide rail (63) slidably disposed at the bottom of the protective box (1). The bottom guide rail (63) is horizontally disposed along the width direction of the bottom of the protective box (1) and can slide relative to the protective box (1). A buffer box (5) is also fixedly disposed on the bottom guide rail (63). A second guide frame (62) is disposed at each end of the bottom guide rail (63). A second guide rod (621) is fixedly disposed between the two second guide frames (62). A second guide block (622) is slidably disposed on the second guide rod (621). The second guide block (622) is fixed to the end of the bottom guide rail (63). An end connecting rod (61) is fixedly connected to the middle of the side of the second guide frame (62) away from the bottom guide rail (63). The end connecting rod (61) passes through the second side plate (13) and is fixedly connected to the buffer plate (4).

9. A lithium battery module buffer and shock absorption support structure according to claim 8, characterized in that: The bottom guide rail (63) is connected to the second guide block (622) via a telescopic plate (65). One end of the telescopic plate (65) is fixedly connected to the bottom guide rail (63), and the other end is fixedly connected to the second guide block (622). A side connecting rod (64) is fixedly provided on the side of the bottom guide rail (63). The side connecting rod (64) passes through the first side fixing plate (12) and is fixedly connected to the buffer plate (4) to realize the linkage guidance of the buffer plate (4) in the X direction.

10. A lithium battery module buffer and shock absorption support structure according to claim 1, characterized in that: The bottom of the protective cover (2) is provided with a buffer cotton for contacting the upper surface of the battery pack (3), and a spring damper (42) is connected between the buffer plate (4) and the inner wall of the protective box (1), and a buffer block (43) is filled between the buffer plate (4) and the protective box (1).

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