Lithium battery anti-explosion valve assembling mechanism

Abstract

The utility model discloses a lithium battery anti-explosion valve assembling mechanism which comprises a splicing hole formed in the top of a lithium battery body and an anti-explosion valve body clamped in the splicing hole. The supporting and pressing assembly comprises supporting columns symmetrically arranged at the top of the lithium battery body, a top plate arranged at the tops of the two supporting columns, a threaded hole formed in the top plate, a threaded rod in threaded connection with the threaded hole, a fixed plate connected with the threaded rod through a bearing, and a pressing plate mounted at the bottom of the fixed plate; the groove is formed in the top of the anti-explosion valve body and allows the pressing plate to be inserted; the explosion-proof valve further comprises limiting grooves symmetrically formed in the explosion-proof valve body and containing grooves symmetrically formed in the pressing plate. The explosion-proof valve has the beneficial effects that the convenience and the accuracy of the installation of the explosion-proof valve body are improved through the designed supporting and pressing assembly, the stability of the explosion-proof valve body in a vibration environment is obviously enhanced, and the overall safety of the lithium battery is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a lithium battery explosion-proof valve assembly mechanism. Background Technology

[0002] With the rapid development of electric vehicles, mobile devices, and energy storage systems, lithium batteries, as the core energy supply unit for these devices, have received increasing attention in the industry regarding their safety and reliability. During use, due to the complexity of internal chemical reactions, lithium batteries may encounter abnormal situations such as short circuits, overcharging, and overheating. If these situations are not controlled in time, they will greatly increase the risk of battery thermal runaway and even explosion. Therefore, to ensure the safety of lithium batteries under extreme conditions, lithium battery explosion-proof valves have emerged as an important component for ensuring the safety of battery systems.

[0003] The main function of a lithium battery explosion-proof valve is to release high-pressure gas and heat through a specific opening mechanism when the internal pressure of the battery rises abnormally, thereby effectively preventing the battery casing from rupturing or exploding. Traditional explosion-proof valves are often installed using a snap-fit ​​connection, where the valve body is directly snapped into the pre-drilled joint hole in the lithium battery casing. While this installation method is simple and quick, during long-term use, especially under continuous vibrations generated during vehicle operation or equipment operation, the connection between the explosion-proof valve and the battery casing may loosen, causing the valve to fail to fit tightly and thus affecting its normal opening function at critical moments. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery explosion-proof valve assembly mechanism that significantly enhances the stability of the explosion-proof valve under vibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery explosion-proof valve assembly mechanism, comprising...

[0006] The splicing hole is opened on the top of the lithium battery body, and the explosion-proof valve body is snapped into the splicing hole;

[0007] The support pressing assembly includes support columns symmetrically arranged on the top of the lithium battery body, a top plate disposed on the top of the two support columns, a threaded hole opened inside the top plate, a threaded rod threadedly connected to the threaded hole, a fixing plate connected to the threaded rod through a bearing, a pressure plate installed at the bottom of the fixing plate, and a groove opened on the top of the explosion-proof valve body for the pressure plate to be inserted.

[0008] Preferably, it also includes a limiting groove symmetrically opened on the explosion-proof valve body, a receiving groove symmetrically opened on the pressure plate, a second spring disposed at the bottom of the receiving groove, a connecting rod disposed at one end of the second spring, and a limiting block disposed at one end of the connecting rod and capable of engaging with the limiting groove.

[0009] Preferably, it also includes extension rods symmetrically arranged on the outer wall of the fixed plate, and guide holes opened inside the extension rods.

[0010] Preferably, it also includes guide rods symmetrically arranged on the top of the lithium battery body, and the guide rods penetrate through the guide hole.

[0011] Preferably, it also includes multiple base blocks disposed on the outer wall of the explosion-proof valve body, and snap-fit ​​components disposed on the base blocks and the lithium battery body.

[0012] Preferably, the snap-fit ​​component includes multiple slots formed on the lithium battery body, a snap-fit ​​block with one end inserted into the base block and the other end snapped into the slot, a first fastening ring installed inside the base block, a second fastening ring disposed on the outer wall of the snap-fit ​​block, and a first spring sleeved on the snap-fit ​​block and connected to the first fastening ring and the second fastening ring respectively.

[0013] Preferably, the top plate is a disc-shaped structure, and the supporting column is a solid column structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The designed support and pressure components improve the ease and accuracy of installing the explosion-proof valve body, significantly enhance the stability of the explosion-proof valve body in vibration environments, and improve the overall safety of the lithium battery. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A schematic diagram of the enlarged structure of region M in the diagram;

[0018] Figure 3 For the present utility model Figure 1 A magnified structural diagram of region B in the diagram;

[0019] Figure 4 This is a schematic diagram of the snap-fit ​​structure between the explosion-proof valve body and the lithium battery body of this utility model;

[0020] Figure 5 For the present utility model Figure 4 A schematic diagram of the enlarged structure of region G in the diagram;

[0021] Figure 6 This is a partial sectional view of the pressure plate structure of this utility model from the side.

[0022] In the diagram: 1. Lithium battery body; 11. Splicing hole; 12. Support column; 13. Guide rod; 14. Slot; 2. Explosion-proof valve body; 21. Groove; 22. Limiting groove; 23. Base block; 230. First fastening ring; 3. Top plate; 4. Threaded rod; 5. Fixing plate; 51. Extension rod; 510. Guide hole; 6. Pressure plate; 61. Receiving groove; 7. Limiting block; 71. Connecting rod; 710. Second spring; 8. Slot; 81. Second fastening ring; 9. First spring. Detailed Implementation

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

[0024] Example 1

[0025] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 This is the first embodiment of the present invention, which provides a lithium battery explosion-proof valve assembly mechanism, including...

[0026] The splicing hole 11 is opened on the top of the lithium battery body 1, and the explosion-proof valve body 2 is snapped into the splicing hole 11, realizing the addition of the explosion-proof valve body 2. When the internal pressure of the battery rises abnormally, the internal high-pressure gas and heat are released through a specific opening mechanism, thereby effectively preventing the battery casing from cracking or exploding.

[0027] The supporting pressure assembly includes support columns 12 symmetrically arranged on the top of the lithium battery body 1, which realizes the addition of support columns 12; a top plate 3 set on the top of the two support columns 12, which increases the support of the top plate 3 through the support columns 12; a threaded hole opened in the top plate 3, which realizes the opening of the threaded hole; a threaded rod 4 threadedly connected to the threaded hole; a fixing plate 5 connected to the threaded rod 4 through a bearing; the rotation of the threaded rod 4 can drive the fixing plate 5 to rise and fall; a pressure plate 6 installed at the bottom of the fixing plate 5; the rise and fall of the fixing plate 5 drives the pressure plate 6 to rise and fall; a groove 21 opened on the top of the explosion-proof valve body 2 for the pressure plate 6 to be inserted; the pressure plate 6 descends and is firmly inserted into the groove 21, which improves the convenience and accuracy of the installation of the explosion-proof valve body 2. More importantly, through the optimization of the physical structure, the stability of the explosion-proof valve body 2 in the vibration environment is significantly enhanced, and the overall safety of the lithium battery is improved.

[0028] In this embodiment, preferably, it also includes a limiting groove 22 symmetrically opened on the explosion-proof valve body 2, realizing the opening of the limiting groove 22; a receiving groove 61 symmetrically opened on the pressure plate 6, realizing the opening of the receiving groove 61; a second spring 710 set at the bottom of the receiving groove 61, realizing the addition of the second spring 710; a connecting rod 71 set at one end of the second spring 710, realizing the addition of the connecting rod 71; and a limiting block 7 set at one end of the connecting rod 71 and capable of engaging with the limiting groove 22. The engagement of the limiting block 7 and the limiting groove 22 reinforces the pressure plate 6 placed in the groove 21.

[0029] In this embodiment, preferably, the top plate 3 is a disc-shaped structure and the support column 12 is a solid column structure, which increases the stability of the top plate 3.

[0030] Example 2

[0031] Please see Figures 1-6 This is the second embodiment of the present invention, which provides a lithium battery explosion-proof valve assembly mechanism, including...

[0032] The splicing hole 11 is opened on the top of the lithium battery body 1, and the explosion-proof valve body 2 is snapped into the splicing hole 11, realizing the addition of the explosion-proof valve body 2. When the internal pressure of the battery rises abnormally, the internal high-pressure gas and heat are released through a specific opening mechanism, thereby effectively preventing the battery casing from cracking or exploding.

[0033] The supporting pressure assembly includes support columns 12 symmetrically arranged on the top of the lithium battery body 1, which realizes the addition of support columns 12; a top plate 3 set on the top of the two support columns 12, which increases the support of the top plate 3 through the support columns 12; a threaded hole opened in the top plate 3, which realizes the opening of the threaded hole; a threaded rod 4 threadedly connected to the threaded hole; a fixing plate 5 connected to the threaded rod 4 through a bearing; the rotation of the threaded rod 4 can drive the fixing plate 5 to rise and fall; a pressure plate 6 installed at the bottom of the fixing plate 5; the rise and fall of the fixing plate 5 drives the pressure plate 6 to rise and fall; a groove 21 opened on the top of the explosion-proof valve body 2 for the pressure plate 6 to be inserted; the pressure plate 6 descends and is firmly inserted into the groove 21, which improves the convenience and accuracy of the installation of the explosion-proof valve body 2. More importantly, through the optimization of the physical structure, the stability of the explosion-proof valve body 2 in the vibration environment is significantly enhanced, and the overall safety of the lithium battery is improved.

[0034] In this embodiment, preferably, it also includes a limiting groove 22 symmetrically opened on the explosion-proof valve body 2, realizing the opening of the limiting groove 22; a receiving groove 61 symmetrically opened on the pressure plate 6, realizing the opening of the receiving groove 61; a second spring 710 set at the bottom of the receiving groove 61, realizing the addition of the second spring 710; a connecting rod 71 set at one end of the second spring 710, realizing the addition of the connecting rod 71; and a limiting block 7 set at one end of the connecting rod 71 and capable of engaging with the limiting groove 22. The engagement of the limiting block 7 and the limiting groove 22 reinforces the pressure plate 6 placed in the groove 21.

[0035] In this embodiment, preferably, it also includes an extension rod 51 symmetrically arranged on the outer wall of the fixing plate 5, thereby realizing the addition of the extension rod 51, and a guide hole 510 is opened inside the extension rod 51, thereby realizing the opening of the guide hole 510.

[0036] In this embodiment, preferably, a guide rod 13 is symmetrically arranged on the top of the lithium battery body 1, which realizes the addition of the guide rod 13, and the guide rod 13 passes through the guide hole 510 to increase the guidance for the lifting and lowering of the fixing plate 5.

[0037] In this embodiment, preferably, it also includes multiple base blocks 23 disposed on the outer wall of the explosion-proof valve body 2, realizing the addition of base blocks 23; a snap-fit ​​component disposed on the base blocks 23 and the lithium battery body 1; the snap-fit ​​component includes multiple slots 14 opened on the lithium battery body 1, realizing the opening of slots 14; a snap-fit ​​block 8 with one end inserted into the base block 23 and the other end snapped with the slot 14; the snap-fit ​​of the snap-fit ​​block 8 and the slot 14 increases the splicing performance of the explosion-proof valve body 2 and the lithium battery body 1; a first fastening ring 230 installed inside the base block 23, realizing the addition of the first fastening ring 230; a second fastening ring 81 disposed on the outer wall of the snap-fit ​​block 8, realizing the addition of the second fastening ring 81; and a first spring 9 sleeved on the snap-fit ​​block 8 and connected to the first fastening ring 230 and the second fastening ring 81 respectively.

[0038] In this embodiment, preferably, the top plate 3 is a disc-shaped structure and the support column 12 is a solid column structure, which increases the stability of the top plate 3.

[0039] The working principle and usage process of this utility model are as follows: When in use, the explosion-proof valve body 2 is snapped into the splicing hole 11. The rotation of the threaded rod 4 can drive the fixing plate 5 to rise and fall. When the fixing plate 5 rises and falls, it drives the pressure plate 6 to rise and fall. When the pressure plate 6 falls and is firmly inserted into the groove 21, it improves the convenience and accuracy of the installation of the explosion-proof valve body 2, significantly enhances the stability of the explosion-proof valve body 2 in the vibration environment, and improves the overall safety of the lithium battery.

[0040] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery explosion-proof valve assembly mechanism, characterized in that: Comprising The splicing hole (11) is opened in the top of the lithium battery body (1), and the explosion-proof valve body (2) is clamped in the splicing hole (11). The support lower pressing assembly comprises support columns (12) symmetrically arranged on the top of the lithium battery body (1), a top plate (3) arranged on the top of the two support columns (12), a threaded hole opened in the top plate (3), a threaded rod (4) threadedly connected with the threaded hole, a fixed plate (5) connected with the threaded rod (4) through a bearing, a pressing plate (6) mounted on the bottom of the fixed plate (5), and a groove (21) opened on the top of the explosion-proof valve body (2) for inserting the pressing plate (6).

2. The mechanism for assembling the explosion-proof valve of the lithium battery according to claim 1, characterized in that: Further comprising a limiting groove (22) symmetrically opened on the explosion-proof valve body (2), a containing groove (61) symmetrically opened on the pressing plate (6), a second spring (710) arranged at the bottom of the containing groove (61), a connecting rod (71) arranged at one end of the second spring (710), and a limiting block (7) arranged at one end of the connecting rod (71) and capable of being clamped and connected with the limiting groove (22).

3. The mechanism for assembling the explosion-proof valve of the lithium battery according to claim 1, characterized in that: Further comprising extension rods (51) symmetrically arranged on the outer wall of the fixed plate (5), and guide holes (510) opened in the extension rods (51).

4. The mechanism for assembling the explosion-proof valve of the lithium battery according to claim 1, characterized in that: Further comprising guide rods (13) symmetrically arranged on the top of the lithium battery body (1), and the guide rods (13) penetrating the guide holes (510).

5. The mechanism for assembling the explosion-proof valve of the lithium battery according to claim 1, characterized in that: Further comprising a plurality of base blocks (23) arranged on the outer wall of the explosion-proof valve body (2), and clamping components arranged on the base blocks (23) and the lithium battery body (1).

6. The mechanism for assembling a burst disc for a lithium battery according to claim 5, wherein: The clamping component comprises a plurality of clamping grooves (14) opened on the lithium battery body (1), a clamping block (8) inserted into one end of the base block (23) and clamped at the other end with the clamping groove (14), a first fastening ring (230) mounted in the base block (23), a second fastening ring (81) arranged on the outer wall of the clamping block (8), and a first spring (9) sleeved on the clamping block (8) and connected with the first fastening ring (230) and the second fastening ring (81) respectively.

7. The mechanism for assembling a burst disc for a lithium battery according to claim 1, wherein: The top plate (3) is a disc type structure, and the support column (12) is a solid column structure.

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