Lithium battery shock absorption protection mechanism

Abstract

The utility model discloses a lithium battery damping protection mechanism belongs to battery technical field, and its technical scheme main points include the installation square cavity, the inside swing joint of installation square cavity has the elastic mounting mechanism, the inside swing joint of installation square cavity has the lithium battery bag, the outside swing joint of installation square cavity has the elastic buffer mechanism, can utilize servo motor drive linkage link and drive contact soft board bidirectional clamping lithium battery bag, the telescopic guide rod and second buffer spring reduce the contact soft board travel rate in the process, and the first rack bar, second rack bar telescopic rod and first buffer spring reduce the stress of clamping, make the double buffer spring under the elastic fixed state continue to absorb vibration energy, and positioning plate cooperates with installation square cavity, and contact soft board adaptive clamping different size battery bag, not only through the elastic buffer structure and avoid the battery deviation wear and tear to avoid high frequency vibration transmission, but also with adjustable clamping mechanism solves the problem that the size adaptability of the installation frame is poor.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a shock absorption and protection mechanism for lithium batteries. Background Technology

[0002] The oil crisis of the 1970s prompted people to look for alternative energy sources, and the military, aviation and other fields also had new demands for power sources. At that time, batteries could not meet the requirements for high energy density. Lithium batteries came into people's view because of the characteristics of lithium metal. Through continuous research, they have gradually developed from the initial concept to become an important energy storage device that is widely used today.

[0003] In existing technologies, traditional lithium battery packs are rigidly connected to the inner wall of the power supply environment through welding or mechanical connectors, which causes high-frequency vibrations to be directly transmitted to the battery, resulting in offset wear. Furthermore, existing mounting brackets cannot be adapted to battery packs of different specifications due to their customized design, thus causing vibration damage and poor size compatibility.

[0004] Therefore, a shock absorption and protection mechanism for lithium batteries is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery shock absorption and protection mechanism that can solve the problems of vibration transmission damage and poor size adaptability in existing systems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery shock absorption and protection mechanism, including a mounting cavity, an elastic mounting mechanism movably connected to the inner side of the mounting cavity, a lithium battery pack movably connected to the inner side of the mounting cavity, and an elastic buffer mechanism movably connected to the outer side of the mounting cavity.

[0007] The elastic mounting mechanism includes an extended square cavity fixedly connected to the bottom of the mounting square cavity. A servo motor is fixedly connected to the bottom of the inner side of the extended square cavity. A rotating block is fixedly connected to the output end of the servo motor. Pull rods are rotatably connected to both sides of the rotating block, and linkage rods are rotatably connected to the other ends of the two pull rods. The two linkage rods are slidably connected to both sides of the bottom of the mounting square cavity. A linkage plate is fixedly connected to the top of the linkage rod, and the two linkage plates are slidably connected to both sides of the inner side of the mounting square cavity. The linkage plates are arranged on both sides of the lithium battery pack, and elastic fixing components are movably connected to the corresponding side of the two linkage plates.

[0008] Preferably, the elastic buffer mechanism includes a buffer sleeve that is movably connected to the outside of the mounting cavity and the extension cavity, a telescopic support is fixedly connected to the bottom of the inner side of the buffer sleeve, the telescopic support is fixedly connected to the bottom of the extension cavity, and a first compression spring is fixedly connected to the inner side of the telescopic support.

[0009] Preferably, a bearing block is fixedly connected to the bottom of the extended square cavity, and buffer blocks are slidably connected to both sides of the inner side of the buffer sleeve. Buffer pressure rods are rotatably connected to the front and rear sides of the inner side of the bearing block, and the other ends of the two buffer pressure rods are rotatably connected to the top of the two buffer blocks respectively.

[0010] Preferably, a telescopic column is fixedly connected to the side of the buffer block away from the bearing block, the telescopic column is fixedly connected to both sides of the inner side of the buffer sleeve, and a second compression spring is fixedly connected to the inner side of the telescopic column.

[0011] Preferably, the elastic fixing component includes a first toothed rod fixedly connected to the linkage plate near the lithium battery pack, a telescopic rod fixedly connected to the first toothed rod near the lithium battery pack, a first buffer spring fixedly connected to the inner side of the telescopic rod, a second toothed rod fixedly connected to the telescopic rod near the lithium battery pack, and a contact flexible plate fixedly connected to the second toothed rod near the lithium battery pack. The contact flexible plate is disposed on both sides of the lithium battery pack.

[0012] Preferably, the top of the contact plate is rotatably connected to a telescopic guide rod, and the other ends of the two telescopic guide rods are respectively rotatably connected to both sides of the inner side of the mounting cavity. A second buffer spring is fixedly connected to the outer side of the telescopic guide rod.

[0013] Preferably, a positioning plate is fixedly connected to the bottom of the lithium battery pack.

[0014] Preferably, a positioning groove is provided at the bottom of the inner side of the mounting cavity, and the positioning plate is inserted into the inner side of the positioning groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application, by setting up an elastic mounting mechanism, can use a servo motor to drive the linkage rod to bidirectionally clamp the lithium battery pack with the contact flexible plate. During the process, the telescopic guide rod and the second buffer spring reduce the travel speed of the contact flexible plate. The telescopic rod inside the first toothed rod and the second toothed rod and the first buffer spring reduce the clamping stress, so that the double buffer spring can continue to absorb vibration energy in the elastic fixed state. At the same time, the positioning plate cooperates with the mounting cavity, and the contact flexible plate adaptively clamps battery packs of different sizes. It not only isolates the transmission of high frequency vibration through the elastic buffer structure to avoid battery displacement and wear, but also solves the problem of poor adaptability of customized mounting frame size with the adjustable clamping mechanism.

[0017] 2. This application, by setting an elastic buffer mechanism, can set a buffer sleeve on the outside of the mounting cavity and slide it inside the sleeve. When vibration occurs, during the downward sliding process of the mounting cavity under force, the bottom telescopic support and the first compression spring accumulate elastic potential energy through contraction and rebound to achieve vertical buffering. The slit buffer pressure rods distributed in a figure-eight pattern on the bottom center bearing block rotate and open, causing the buffer block to slide, so that the telescopic column and the second compression spring between the buffer block and the inner wall of the sleeve are compressed to generate horizontal buffering. In this way, through the vertical and horizontal bidirectional elastic buffer structure, the vibration energy transmitted from the equipment to the mounting cavity is further absorbed, solving the problem that the vibration is fully transmitted to the lithium battery pack under the traditional rigid connection. At the same time, the sliding buffer sleeve design enhances the overall anti-vibration buffering performance and reduces the offset wear of the battery caused by vibration. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the lithium battery shock absorption and protection mechanism of this utility model;

[0019] Figure 2 This is a partial structural diagram of the mounting cavity of this utility model;

[0020] Figure 3 This is an overall structural diagram of the flexible installation mechanism of this utility model;

[0021] Figure 4 This is an overall structural diagram of the elastic fixing component of this utility model;

[0022] Figure 5 This is an overall structural diagram of the elastic buffer mechanism of this utility model.

[0023] In the diagram: 1. Mounting cavity; 2. Elastic mounting mechanism; 21. Extending cavity; 22. Servo motor; 23. Rotating block; 24. Pull rod; 25. Linkage rod; 26. Linkage plate; 27. Elastic fixing assembly; 27a. First toothed rod; 27b. Telescopic rod; 27c. First buffer spring; 27d. Second toothed rod; 27e. Contact flexible plate; 27f. Telescopic guide rod; 27g. Second buffer spring; 3. Lithium battery pack; 4. Elastic buffer mechanism; 41. Buffer sleeve; 42. Telescopic support column; 43. First compression spring; 44. Bearing block; 45. Buffer block; 46. Buffer pressure rod; 47. Telescopic column; 48. Second compression spring; 5. Positioning plate; 6. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A lithium battery shock absorption and protection mechanism includes a mounting cavity 1, an elastic mounting mechanism 2 movably connected to the inner side of the mounting cavity 1, a lithium battery pack 3 movably connected to the inner side of the mounting cavity 1, and an elastic buffer mechanism 4 movably connected to the outer side of the mounting cavity 1.

[0027] The flexible mounting mechanism 2 includes an extended square cavity 21 fixedly connected to the bottom of the mounting square cavity 1. A servo motor 22 is fixedly connected to the bottom of the inner side of the extended square cavity 21. A rotating block 23 is fixedly connected to the output end of the servo motor 22. Pull rods 24 are rotatably connected to both sides of the rotating block 23, and the other ends of the two pull rods 24 are rotatably connected to linkage rods 25. The two linkage rods 25 are slidably connected to both sides of the bottom of the mounting square cavity 1. A linkage plate 26 is fixedly connected to the top of the linkage rod 25, and the two linkage plates 26 are slidably connected to both sides of the inner side of the mounting square cavity 1. The linkage plates 26 are arranged on both sides of the lithium battery pack 3, and an elastic fixing component 27 is movably connected to the corresponding side of the two linkage plates 26.

[0028] In this embodiment: instead of using mechanical connectors to rigidly connect the lithium battery pack 3, a flexible contact plate 27e with an elastic structure is used to clamp and fix its two ends. Specifically, the lithium battery pack 3 with the positioning plate 5 welded or bolted to its bottom is first taken out and placed into the positioning groove 6 inside the mounting cavity 1. The mounting cavity 1 is a general term for the mounting area of ​​the lithium battery pack 3. The size of the positioning plate 5 is fixed, and the size of the lithium battery pack 3 mounted on its top can be selected as needed. After placement, the servo motor 22 located inside the extension cavity 21 is started, allowing the servo motor 22 to... When the rotating block 23 at the output end rotates, the pull rods 24 on both sides of the rotating block 23 will rotate and move in conjunction. During the linkage of the two pull rods 24, they will pull the linkage rods 25 connected to the other end, causing the two sets of linkage rods 25 that are slidably connected to the bottom of the mounting cavity 1 to slide inward at the same time. The top of the linkage rods 25 is fixedly connected to the main load-bearing structure linkage plate 26 of the contact soft plate 27e. Therefore, when the two linkage plates 26 move inward at the same time, the stress generated during the clamping process will be reduced by the elastic fixing component 27. After the pressing and fixing is completed, the elastic fixing state will continue to be maintained.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the elastic buffer mechanism 4 includes a buffer sleeve 41 movably connected to the outside of the mounting cavity 1 and the extension cavity 21. A telescopic support column 42 is fixedly connected to the bottom of the inner side of the buffer sleeve 41. The telescopic support column 42 is fixedly connected to the bottom of the extension cavity 21. A first compression spring 43 is fixedly connected to the inner side of the telescopic support column 42.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, a bearing block 44 is fixedly connected to the bottom of the extended square cavity 21, and a buffer block 45 is slidably connected to both sides of the inner side of the buffer sleeve layer 41. A buffer pressure rod 46 is rotatably connected to the front and rear sides of the inner side of the bearing block 44, and the other ends of the two buffer pressure rods 46 are rotatably connected to the top of the two buffer blocks 45 respectively.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, a telescopic column 47 is fixedly connected to the side of the buffer block 45 away from the bearing block 44. The telescopic column 47 is fixedly connected to both sides of the inner side of the buffer sleeve layer 41. A second compression spring 48 is fixedly connected to the inner side of the telescopic column 47.

[0032] In this embodiment: the mounting cavity 1 is slidably connected to the device through the outer support buffer sleeve 41, allowing it to slide slightly inside the sleeve. When vibration occurs, the mounting cavity 1 is subjected to downward force. On the one hand, the telescopic support column 42 and its inner first compression spring 43, which are vertically arranged between its bottom and the inner wall of the buffer sleeve 41, will contract and use the elastic potential energy of the rebound to buffer. On the other hand, the split buffer pressure rod 46, which is coaxially arranged with the bearing block 44 at the bottom center and distributed in a figure-eight pattern, will rotate to both sides to expand the bottom opening of the figure-eight pattern when settling, causing the buffer block 45, which is rotatably connected at the other end, to slide to both sides. This causes the telescopic column 47 and its inner second compression spring 48 between the buffer block 45 and the inner wall of the buffer sleeve 41 to press together and generate elastic potential energy, thereby achieving the effect of small-amplitude sliding correction.

[0033] Specifically, such as Figure 3 , Figure 4 As shown, the elastic fixing component 27 includes a first toothed rod 27a fixedly connected to the linkage plate 26 near the lithium battery pack 3. A telescopic rod 27b is fixedly connected to the first toothed rod 27a near the lithium battery pack 3. A first buffer spring 27c is fixedly connected to the inner side of the telescopic rod 27b. A second toothed rod 27d is fixedly connected to the telescopic rod 27b near the lithium battery pack 3. A contact flexible plate 27e is fixedly connected to the second toothed rod 27d near the lithium battery pack 3. The contact flexible plates 27e are disposed on both sides of the lithium battery pack 3.

[0034] Specifically, such as Figure 3 , Figure 4 As shown, a telescopic guide rod 27f is rotatably connected to the top of the contact soft plate 27e, and the other ends of the two telescopic guide rods 27f are respectively rotatably connected to the two sides inside the mounting cavity 1. A second buffer spring 27g is fixedly connected to the outer side of the telescopic guide rod 27f.

[0035] In this embodiment: as the two contact flexible plates 27e move inward simultaneously, the telescopic guide rod 27f between the top and the outer wall rotates and stretches as it moves, causing the second buffer spring 27g on the outer side to accumulate elastic potential energy to reduce the travel speed of the contact flexible plate 27e, so that it approaches the lithium battery pack 3 at a speed lower than that driven by the linkage plate 26. When the contact flexible plate 27e first contacts both sides of the outer wall of the lithium battery pack 3, it is not completely pressed and fixed. The linkage plate 26 needs to continue to press inward simultaneously. During this clamping process, the distance between the contact flexible plate 27e and the linkage plate 26 is reduced, which reduces the distance between the first toothed rod 27a and the second toothed rod 27d. The telescopic rods 27b arranged in an array in each slot inside both and their internal first buffer springs 27c will contract simultaneously, thereby reducing the stress generated during the clamping process. After the pressing and fixing is completed, both the telescopic guide rod 27f and the telescopic rod 27b have the ability to continue to stretch, thus keeping them in an elastically fixed state.

[0036] Specifically, such as Figure 1 , Figure 2 As shown, a positioning plate 5 is fixedly connected to the bottom of the lithium battery pack 3.

[0037] Specifically, such as Figure 2 As shown, a positioning groove 6 is provided at the bottom of the inner side of the mounting cavity 1, and the positioning plate 5 is inserted into the inner side of the positioning groove 6.

[0038] In this embodiment, the lithium battery pack 3 can be initially positioned for installation using the positioning plate 5 and the positioning groove 6.

[0039] Working principle: When fixing the lithium battery pack 3, composed of an array of lithium batteries, to the power supply environment, the outer side of the lithium battery pack 3 is usually rigidly connected to the inner wall of the environment through welding or mechanical connectors. This makes the lithium battery pack 3 integrated with the power supply environment and the overall equipment. When high-frequency vibration or large impact occurs, the vibration effect is directly transmitted and acts on the lithium battery pack 3 itself, causing the internal array of lithium batteries to shift or wear. Now, instead of rigidly connecting the lithium battery pack 3 through mechanical connectors, a flexible contact plate 27e with an elastic structure is used to clamp and elastically fix both ends of the lithium battery pack 3. First, the lithium battery pack 3 with the positioning plate 5 welded or bolted to the bottom is removed, and... The lithium battery pack 3 is placed in the positioning slot 6 inside the mounting cavity 1. The mounting cavity 1 is a general term for the mounting area of ​​the lithium battery pack 3. The size of the positioning plate 5 is fixed, and the size of the lithium battery pack 3 mounted on its top is selected according to requirements. After placement, the servo motor 22 located inside the extension cavity 21 is activated, causing the rotating block 23 located at the output end of the servo motor 22 to rotate. The pull rods 24 on both sides of the rotating block 23 will move in conjunction with the rotation of the rotating block 23. During the linkage of the two pull rods 24, they will pull the linkage rod 25 connected to the other end of the linkage rod, so that the two sets of linkage rods 25 slidably connected to the bottom of the mounting cavity 1 slide inward at the same time. The linkage plate 26, the main load-bearing structure of the contact flexible plate 27e, is fixedly connected to the top of the linkage rod 25. Therefore, when the two linkage plates 26 move inward simultaneously, they can drive the two contact flexible plates 27e to move inward simultaneously, thereby achieving the effect of clamping and fixing the lithium battery pack 3 in both directions and in the same direction. This method can adapt to lithium battery packs 3 of different sizes. During the inward movement of the two contact flexible plates 27e, the telescopic guide rod 27f between its top and the outer wall will rotate and stretch as the contact flexible plates 27e move, causing the second buffer spring 27g on its outer side to accumulate elastic potential energy. This reduces the movement speed of the contact flexible plates 27e, causing them to approach the lithium battery pack 3 at a speed lower than that driven by the linkage plates 26. When the contact flexible plates 27e first contact the two sides of the outer wall of the lithium battery pack 3, they are not in a fully pressed and fixed state. Instead, the linkage plates 26 need to continue moving inward simultaneously. Dynamic compaction is required to complete the fixing process. During this clamping process, the gap between the contact plate 27e and the linkage plate 26 decreases, which in turn reduces the gap between the first toothed rod 27a and the second toothed rod 27d. Each slot inside the first toothed rod 27a and the second toothed rod 27d has a telescopic rod 27b arranged in an array. During the gap reduction, both the telescopic rods and their internal first buffer springs 27c contract, thereby reducing the stress generated during the clamping process. After the pressing and fixing are completed, both the telescopic guide rod 27f and the telescopic rod 27b have the ability to continue stretching, thus maintaining them in an elastically fixed state. Furthermore, during use...The mounting cavity 1 is not rigidly connected within the equipment; instead, a buffer sleeve 41 for support is provided on its outer side. The mounting cavity 1 is slidably connected to the inside of this sleeve, allowing for small-amplitude sliding. When vibration occurs, the mounting cavity 1 is subjected to downward force, simultaneously generating the following buffering effects to correct for small-amplitude sliding: firstly, the elastic potential energy of the telescopic support 42 vertically installed between the bottom of the mounting cavity 1 and the inner wall of the buffer sleeve 41, and its inner first compression spring 43, which retracts and continues to rebound; secondly, the bearing capacity at the center of the bottom of the mounting cavity 1... The support block 44 is coaxially equipped with segmented buffer pressure rods 46 arranged in a figure-eight pattern. During settlement, these rods rotate to both sides, widening the opening at the bottom of the figure-eight shape. The buffer support block 45, rotatably connected to the other end of each rod, slides to both sides. During this sliding, the telescopic column 47 between the buffer support block 45 and the inner wall of the buffer sleeve 41, along with its inner second compression spring 48, also compresses, generating elastic potential energy. In summary, by converting vibration and impact into longitudinal and lateral elastic potential energy and mechanical work, the mounting cavity 1 can undergo slight sliding and correction after being affected, avoiding direct damage to the rigid connection.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery shock absorption and protection mechanism, comprising a mounting cavity (1), characterized in that: The inner side of the mounting cavity (1) is movably connected to an elastic mounting mechanism (2), the inner side of the mounting cavity (1) is movably connected to a lithium battery pack (3), and the outer side of the mounting cavity (1) is movably connected to an elastic buffer mechanism (4). The elastic mounting mechanism (2) includes an extended cavity (21) fixedly connected to the bottom of the mounting cavity (1). A servo motor (22) is fixedly connected to the bottom of the inner side of the extended cavity (21). A rotating block (23) is fixedly connected to the output end of the servo motor (22). A pull rod (24) is rotatably connected to both sides of the rotating block (23), and a linkage rod (25) is rotatably connected to the other end of the two pull rods (24). The two linkage rods (25) are slidably connected to both sides of the bottom of the mounting cavity (1). A linkage plate (26) is fixedly connected to the top of the linkage rod (25), and the two linkage plates (26) are slidably connected to both sides of the inner side of the mounting cavity (1). The linkage plates (26) are set on both sides of the lithium battery pack (3), and an elastic fixing component (27) is movably connected to the corresponding side of the two linkage plates (26).

2. The lithium battery shock absorption and protection mechanism according to claim 1, characterized in that: The elastic buffer mechanism (4) includes a buffer sleeve (41) movably connected to the outside of the mounting cavity (1) and the extension cavity (21). A telescopic support (42) is fixedly connected to the bottom of the inner side of the buffer sleeve (41). The telescopic support (42) is fixedly connected to the bottom of the extension cavity (21). A first compression spring (43) is fixedly connected to the inner side of the telescopic support (42).

3. The lithium battery shock absorption and protection mechanism according to claim 2, characterized in that: The bottom of the extended square cavity (21) is fixedly connected to a bearing block (44), and the two sides of the inner side of the buffer sleeve (41) are slidably connected to buffer blocks (45). The front and rear sides of the inner side of the bearing block (44) are rotatably connected to buffer pressure rods (46), and the other ends of the two buffer pressure rods (46) are rotatably connected to the top of the two buffer blocks (45).

4. The lithium battery shock absorption and protection mechanism according to claim 3, characterized in that: The buffer block (45) is fixedly connected to a telescopic column (47) on the side away from the bearing block (44). The telescopic column (47) is fixedly connected to both sides of the inner side of the buffer sleeve (41). The inner side of the telescopic column (47) is fixedly connected to a second compression spring (48).

5. The lithium battery shock absorption and protection mechanism according to claim 1, characterized in that: The elastic fixing component (27) includes a first toothed rod (27a) fixedly connected to the linkage plate (26) near the lithium battery pack (3), a telescopic rod (27b) fixedly connected to the first toothed rod (27a) near the lithium battery pack (3), a first buffer spring (27c) fixedly connected to the inner side of the telescopic rod (27b), a second toothed rod (27d) fixedly connected to the telescopic rod (27b) near the lithium battery pack (3), a contact flexible plate (27e) fixedly connected to the second toothed rod (27d) near the lithium battery pack (3), and the contact flexible plate (27e) is disposed on both sides of the lithium battery pack (3).

6. The lithium battery shock absorption and protection mechanism according to claim 5, characterized in that: The top of the contact soft plate (27e) is rotatably connected to a telescopic guide rod (27f), and the other ends of the two telescopic guide rods (27f) are respectively rotatably connected to the two sides inside the mounting cavity (1). The outer side of the telescopic guide rod (27f) is fixedly connected to a second buffer spring (27g).

7. The lithium battery shock absorption and protection mechanism according to claim 1, characterized in that: The bottom of the lithium battery pack (3) is fixedly connected to a positioning plate (5).

8. A lithium battery shock absorption and protection mechanism according to claim 7, characterized in that: The bottom of the inner side of the mounting cavity (1) is provided with a positioning groove (6), and the positioning plate (5) is inserted into the inner side of the positioning groove (6).

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