High-safety sodium battery pressure relief assembly

Abstract

The invention discloses a high-safety sodium battery pressure relief assembly, and relates to the technical field of sodium battery safety, the high-safety sodium battery pressure relief assembly comprises a top cover, the top of the top cover is fixedly connected with two pressure relief shells, two intelligent pressure relief mechanisms are arranged in the two pressure relief shells, and one side of each of the two pressure relief shells is provided with two detachable filtering explosion-proof mechanisms. According to the high-safety sodium battery pressure relief assembly, by arranging the intelligent pressure relief mechanism, accurate and stable pressure relief control over the air pressure in a sodium battery is achieved, and the problems that in the using process of an existing pressure relief assembly, pressure relief is started only through cooperation of a reset spring and a sealing plug when the air pressure reaches a set value, and the pressure relief is not stable in the high-temperature environment are solved. The problems that in a low-temperature environment, the elasticity modulus of the spring is reduced, the originally set pressure relief pressure value possibly cannot normally trigger pressure relief, and in the low-temperature environment, the elasticity modulus of the spring is increased, so that the actual pressure relief pressure is higher than the set value, the sealing failure of the pressure relief assembly is easily caused, and the safety and the service life of the sodium battery are reduced are solved.

Description

Technical Field

[0001] This invention relates to the field of sodium battery safety technology, specifically to a high-safety sodium battery pressure relief component. Background Technology

[0002] With the continuous development of new energy technologies, sodium batteries have been widely used in the field of energy storage due to their advantages such as low cost and abundant resources. In order to effectively protect sodium batteries during use, a top cover assembly needs to be installed on the sodium battery. At the same time, the top cover assembly on the market is basically a simple injection molded part. Because sodium batteries will have a violent gas production reaction under conditions such as puncture, overcharging, and short circuit, the internal gas pressure of the sodium battery will increase rapidly, which may lead to an explosion and cause a safety accident. In order to enhance the protective safety performance of sodium batteries, a pressure relief assembly is designed on the top cover assembly to relieve the pressure of the exhaust gas generated by the sodium battery.

[0003] However, the existing devices have the following shortcomings during use:

[0004] In existing pressure relief components, when the internal pressure of the battery reaches a set danger level, the pressure pushes the sealing plug, causing the return spring to contract. The sealing plug then ceases to function as a seal until the pressure drops to a set safety level. At this point, the return spring resets the sealing plug to maintain the seal. However, relying solely on the cooperation of the return spring and the sealing plug to activate pressure relief at the moment the pressure reaches the set value can lead to problems. In high-temperature environments, the spring's elastic modulus decreases, and the originally set pressure relief value may not trigger the pressure relief correctly. In low-temperature environments, the spring's elastic modulus increases, causing the actual pressure relief pressure to exceed the set value. This can easily cause the pressure relief component to fail to seal, reducing the safety and lifespan of the sodium battery.

[0005] Therefore, we propose a high-safety sodium battery pressure relief component to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a high-safety sodium battery pressure relief component. When the internal air pressure of the sodium battery changes, the pressure sensor can monitor it in real time and transmit the signal to the drive mechanism. The drive mechanism drives the threaded rod to rotate, and the rotation of the threaded rod causes the moving plate to slide in the limiting groove. Then, through the connecting rod, the pressure relief cover is raised or lowered to complete the pressure relief or sealing operation, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-safety sodium battery pressure relief assembly, including a top cover, two pressure relief shells fixedly connected to the top of the top cover, two intelligent pressure relief mechanisms being provided inside the two pressure relief shells, and two detachable filter and explosion-proof mechanisms being provided on one side of the two pressure relief shells;

[0008] The two intelligent pressure relief mechanisms include two pressure relief grooves opened on the top of the top cover, two pressure relief holes opened on the inner bottom of the two pressure relief grooves, two pressure relief covers adapted to them installed in the two pressure relief grooves, two U-shaped frames installed on one side of the two pressure relief shells, two threaded rods rotatably connected to the inner side of the two U-shaped frames, two limiting grooves opened on the inner side of the two U-shaped frames, two movable plates threadedly connected to the outer surface of the two threaded rods, and the two movable plates slidably connected in the two limiting grooves, two connecting rods fixedly connected to the top of the two movable plates, and the ends of the two connecting rods away from the two movable plates movably pass through the two pressure relief shells and are fixedly connected to the two pressure relief covers. A pressure sensor is installed on the inner top of the top cover, and a drive mechanism for driving the two threaded rods to rotate is provided on the top of the top cover.

[0009] Preferably, the two detachable filter explosion-proof mechanisms include two mounting brackets, and two filter screens are fixedly connected to the inner side of the two mounting brackets.

[0010] Preferably, two mounting slots are provided on one side of the two pressure relief shells, four positioning holes are provided in the two mounting slots, and four positioning rods are fixedly connected to one side of the two mounting brackets.

[0011] Preferably, two grooves are formed on one side of the two pressure relief shells, the two grooves are connected to two mounting slots, two sliding plates are slidably connected in the two grooves, and two limiting holes are formed on the top of the two mounting brackets.

[0012] Preferably, two limiting rods are fixedly connected to the bottom of the two slide plates, two telescopic rods are fixedly connected to the top of the inner side of the two grooves, the bottom ends of the two telescopic rods are fixedly connected to the two slide plates, and two return springs are sleeved on the outer surface of the two telescopic rods.

[0013] Preferably, two pull plates are fixedly connected to one side of the two skateboards, and four handles are installed on one side of the two mounting brackets.

[0014] Preferably, the drive mechanism includes a dual-axis motor fixedly installed on the top of the cover, the dual-axis motor being electrically connected to a pressure sensor, and two drive shafts being fixedly connected to the two output ends of the dual-axis motor.

[0015] Preferably, one end of each of the two drive shafts is fixedly connected to the outer surface of the two threaded rods with four bevel gears, and the four bevel gears are meshed together.

[0016] Preferably, the top of the top cover is fixedly connected to two support blocks, and the two drive shafts are rotatably connected to the inner surfaces of the two support blocks.

[0017] Preferably, the intelligent pressure relief mechanism further includes two pneumatic guide plates fixedly connected to the inner sides of the two pressure relief shells. The two pneumatic guide plates are inclined, and the ends of the two connecting rods away from the two moving plates pass through the two pneumatic guide plates.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention achieves precise and stable pressure relief control of the internal gas pressure of a sodium battery by setting an intelligent pressure relief mechanism. When the internal gas pressure of the sodium battery changes, the pressure sensor can monitor it in real time and transmit the signal to the drive mechanism. The drive mechanism drives the threaded rod to rotate, and the rotation of the threaded rod causes the moving plate to slide in the limiting groove. Then, through the connecting rod, the pressure relief cover is raised or lowered to complete the pressure relief or sealing operation. It is not affected by temperature changes and solves the problem that existing pressure relief components rely solely on the cooperation of the return spring and the sealing plug to open the pressure relief momentarily when the gas pressure reaches the set value. In high-temperature environments, the elastic modulus of the spring decreases, and the originally set pressure relief value may not be able to trigger the pressure relief normally. In low-temperature environments, the elastic modulus of the spring increases, which will cause the actual pressure relief pressure to be higher than the set value, which can easily cause the pressure relief component to fail to seal, reducing the safety and service life of the sodium battery.

[0020] 2. This invention effectively handles exhaust gas and sparks emitted during pressure relief by incorporating a detachable filter and explosion-proof mechanism. It also features convenient disassembly and maintenance. The filter screen inside the mounting frame filters impurities and sparks in the exhaust gas, preventing them from causing external combustion or explosion, thus further improving the safety of sodium batteries and reducing environmental pollution. During installation, the positioning rod is inserted into the positioning hole, and the sliding plate, under the action of the return spring and telescopic rod, drives the limiting rod into the limiting hole for quick fixation. During disassembly, pulling the pull plate disengages the limiting rod from the limiting hole, allowing the mounting frame to be removed for easy cleaning or replacement of the filter screen, ensuring the durability of the filtration effect and further enhancing the safety and environmental friendliness of sodium batteries. Attached Figure Description

[0021] Figure 1 This is a perspective view of the main structure of a high-safety sodium battery pressure relief assembly according to the present invention;

[0022] Figure 2 This is a right-side perspective view of a high-safety sodium battery pressure relief assembly according to the present invention.

[0023] Figure 3 This is a perspective view of the bottom structure of a high-safety sodium battery pressure relief assembly according to the present invention;

[0024] Figure 4 This is a partial cross-sectional perspective view of a high-safety sodium battery pressure relief assembly according to the present invention.

[0025] Figure 5 This is a perspective view of the mounting bracket in a high-safety sodium battery pressure relief assembly of the present invention;

[0026] Figure 6 This is a three-dimensional view of the positioning hole in a high-safety sodium battery pressure relief assembly of the present invention;

[0027] Figure 7 This invention relates to a high-safety sodium battery pressure relief assembly. Figure 2 Enlarged 3D view of the structure at point B in the middle;

[0028] Figure 8 This invention relates to a high-safety sodium battery pressure relief assembly. Figure 2 Enlarged 3D view of the structure at point A;

[0029] Figure 9 This is a three-dimensional view of the pressure relief groove in a high-safety sodium battery pressure relief assembly of the present invention.

[0030] In the diagram: 1. Top cover; 3. Pressure relief shell; 4. Intelligent pressure relief mechanism; 401. Pressure relief groove; 402. Pressure relief cover; 403. U-shaped frame; 404. Threaded rod; 405. Limiting groove; 406. Moving plate; 407. Connecting rod; 408. Pressure sensor; 409. Air pressure guide plate; 5. Drive mechanism; 501. Dual-axis motor; 502. Drive shaft; 503. Bevel gear; 504. Support block; 6. Detachable filter explosion-proof mechanism; 601. Mounting bracket; 602. Filter screen; 603. Positioning hole; 604. Positioning rod; 605. Groove; 606. Slide plate; 607. Limiting hole; 608. Limiting rod; 609. Telescopic rod; 610. Return spring; 611. Pull plate; 612. Handle. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 - Figure 9 As shown, the present invention provides a technical solution: a high-safety sodium battery pressure relief assembly, including a top cover 1, two pressure relief shells 3 are fixedly connected to the top of the top cover 1, two intelligent pressure relief mechanisms 4 are provided inside the two pressure relief shells 3, and two detachable filter anti-explosion mechanisms 6 are provided on one side of the two pressure relief shells 3.

[0033] The two intelligent pressure relief mechanisms 4 include two pressure relief grooves 401 opened on the top of the top cover 1, two pressure relief holes opened on the inner bottom of the two pressure relief grooves 401, two pressure relief covers 402 adapted to them installed in the two pressure relief grooves 401, two U-shaped frames 403 installed on one side of the two pressure relief shells 3, two threaded rods 404 rotatably connected to the inner side of the two U-shaped frames 403, two limiting grooves 405 opened on the inner side of the two U-shaped frames 403, two moving plates 406 threadedly connected to the outer surface of the two threaded rods 404, and the two moving plates 406 slidably connected in the two limiting grooves 405, two connecting rods 407 fixedly connected to the top of the two moving plates 406, and the end of the two connecting rods 407 away from the two moving plates 406 movably passes through the two pressure relief shells 3 and is fixedly connected to the two pressure relief covers 402. A pressure sensor 408 is installed on the inner top of the top cover 1, and a drive mechanism 5 for driving the two threaded rods 404 to rotate is provided on the top of the top cover 1.

[0034] like Figure 1 and Figure 5 As shown, the two detachable filter and explosion-proof mechanisms 6 include two mounting brackets 601. Two filter screens 602 are fixedly connected to the inner side of the two mounting brackets 601. By setting the filter screens 602 inside the mounting brackets 601, the exhaust gas discharged during the depressurization process of the sodium battery can be effectively filtered. Impurities and sparks that may be carried in the exhaust gas will be intercepted by the filter screens 602, preventing these substances from causing external combustion or explosion accidents after discharge. This significantly improves the safety of sodium battery use and reduces the pollution of the external environment by the depressurization exhaust gas.

[0035] like Figure 1 , Figure 5 and Figure 6 As shown, two mounting slots are provided on one side of the two pressure relief shells 3, and four positioning holes 603 are provided in the two mounting slots. Four positioning rods 604 are fixedly connected to one side of the two mounting brackets 601. Through the cooperation of the positioning rods 604 and the positioning holes 603, a precise positioning reference is provided for the installation of the mounting brackets 601. When installing the detachable filter explosion-proof mechanism 6, simply align the positioning rods 604 with the positioning holes 603 and insert them to quickly determine the position of the mounting brackets 601, making the installation process more convenient and efficient, and ensuring the stability of the mounting brackets 601 after installation, ensuring that the filter screen 602 can perform its filtering function normally.

[0036] like Figure 1 and Figure 7As shown, two grooves 605 are provided on one side of the two pressure relief shells 3. The two grooves 605 are connected to two mounting slots. Two sliding plates 606 are slidably connected in the two grooves 605. Two limiting holes 607 are provided on the top of the two mounting brackets 601. The setting of the sliding plates 606 and the limiting holes 607 forms a limiting and fixing structure. When the mounting bracket 601 is initially positioned by the positioning rod 604, the limiting rod 608 at the bottom of the sliding plate 606 can be inserted into the limiting hole 607 under the action of related components, so as to firmly fix the mounting bracket 601 on the pressure relief shell 3. This prevents the mounting bracket 601 from loosening or shifting due to vibration or other factors during use, and ensures that the detachable filter explosion-proof mechanism 6 always maintains a stable working state during the sodium battery pressure relief process.

[0037] like Figure 1 , Figure 5 and Figure 7 As shown, two limiting rods 608 are fixedly connected to the bottom of the two sliding plates 606, and two telescopic rods 609 are fixedly connected to the top inner side of the two grooves 605. The bottom ends of the two telescopic rods 609 are fixedly connected to the two sliding plates 606. Two return springs 610 are sleeved on the outer surface of the two telescopic rods 609. Through the combination of the return springs 610 and the telescopic rods 609, the sliding plates 606 have the function of automatically returning to their original position and providing stable pressure. When the mounting bracket 601 is installed, pulling the sliding plates 606 upwards compresses the telescopic rods 609, thus restoring the sliding plates 606 to their original position. The positioning spring 610 stores elastic potential energy. After installation, the slide plate 606 is released, and under the elastic force of the return spring 610, the slide plate 606 is pushed downward, causing the limiting rod 608 to automatically engage with the limiting hole 607, achieving quick fixation. During disassembly, pulling the relevant components moves the slide plate 606 upward, and the limiting rod 608 disengages from the limiting hole 607. The return spring 610 and the telescopic rod 609 can then assist the slide plate 606 in returning to its initial position, facilitating the next installation. The entire process is simple to operate and facilitates the disassembly and maintenance of the detachable filter explosion-proof mechanism 6.

[0038] like Figure 5 and Figure 7 As shown, two pull plates 611 are fixedly connected to one side of the two sliding plates 606, and four handles 612 are installed on one side of the two mounting brackets 601. The pull plates 611 provide a point of leverage for installing and removing the filter screen 602, making it convenient for the operator to pull the sliding plates 606 to disengage the limiting rod 608 from the limiting hole 607, thereby easily removing the mounting bracket 601. The handles 612 on the mounting bracket 601 allow the operator to adjust the position and angle of the mounting bracket 601 during installation, so that the positioning rod 604 can be accurately inserted into the positioning hole 603, improving the convenience and efficiency of installation.

[0039] like Figure 1 , Figure 3 , Figure 4 and Figure 8 As shown, the drive mechanism 5 includes a dual-axis motor 501 fixedly installed on the top of the top cover 1. The dual-axis motor 501 is electrically connected to the pressure sensor 408. The two output ends of the dual-axis motor 501 are fixedly connected to two drive shafts 502. Through the electrical connection between the dual-axis motor 501 and the pressure sensor 408, the two drive shafts 502 can be driven to rotate in a timely and accurate manner according to the internal gas pressure signal of the sodium battery monitored by the pressure sensor 408. The dual-output design of the dual-axis motor 501 can drive two threaded rods 404 at the same time, realizing the synchronous operation of the two intelligent pressure relief mechanisms 4. This ensures the consistency and coordination of the pressure relief operation on both sides of the sodium battery, so that the internal gas pressure of the sodium battery can be released evenly and stably, improving the working reliability and stability of the pressure relief component.

[0040] like Figure 4 and Figure 8 As shown, four bevel gears 503 are fixedly connected to one end of the two drive shafts 502 and the outer surface of the two threaded rods 404. The four bevel gears 503 mesh with each other, and through the meshing transmission of the bevel gears 503, the stable transmission and direction conversion of power between the drive shafts 502 and the threaded rods 404 are realized. Compared with other transmission methods, the bevel gear transmission has the advantages of high transmission efficiency, compact structure and stable transmission ratio. It can accurately transmit the rotation of the drive shafts 502 to the threaded rods 404, ensuring that the threaded rods 404 rotate at a predetermined speed and direction, thereby precisely controlling the lifting and lowering of the moving plate 406 and the pressure relief cover 402, and ensuring the accuracy of the pressure relief operation.

[0041] like Figure 4 and Figure 8 As shown, two support blocks 504 are fixedly connected to the top of the top cover 1. Two drive shafts 502 are rotatably connected to the inner surfaces of the two support blocks 504. The support blocks 504 provide stable support points for the drive shafts 502, so that the drive shafts 502 maintain good coaxiality and stability during rotation. This avoids the shaking or deviation of the drive shafts 502 due to lack of effective support, ensures the transmission accuracy between the drive shafts 502 and the bevel gears 503 and threaded rods 404, reduces the wear of transmission components, extends the service life of the drive mechanism 5, and thus ensures the normal and stable operation of the entire pressure relief assembly.

[0042] like Figure 4 , Figure 8 and Figure 9As shown, the intelligent pressure relief mechanism 4 also includes two pressure guide plates 409 fixedly connected to the inner sides of the two pressure relief shells 3. The two pressure guide plates 409 are inclined, and the ends of the two connecting rods 407 away from the two moving plates 406 pass through the two pressure guide plates 409. The inclined pressure guide plates 409 can guide the exhaust gas discharged from the sodium battery, change the flow direction of the exhaust gas, and make the exhaust gas more smoothly discharged through the pressure relief hole and pressure relief groove 401. This avoids the formation of turbulence or eddies in the pressure relief shell 3, reduces the resistance to exhaust gas discharge, and improves the pressure relief efficiency. At the same time, the pressure guide plates 409 can also buffer the pressure relief process to a certain extent, making the pressure relief process more stable and preventing the internal structure of the sodium battery from being impacted by excessive instantaneous pressure release.

[0043] The usage and working principle of this device are as follows: During the filter installation stage, pull the pull plate 611 upwards, which will cause the slide plate 606 and the limiting rod 608 to move upwards. At this time, the telescopic rod 609 is compressed, and the return spring 610 accumulates elastic potential energy. Then, pick up the mounting bracket 601 through the handle 612, align the positioning rod 604 on one side of it with the positioning hole 603 in the mounting groove on one side of the pressure relief shell 3, and insert the positioning rod 604 to initially position the mounting bracket 601. After adjusting the mounting bracket 601 to the appropriate position, release the pull plate 611. Under the elastic force of the return spring 610, the slide plate 606 moves downwards, and the limiting rod 608 at the bottom of the slide plate 606 automatically engages with the limiting hole 607 at the top of the mounting bracket 601, thus completing the fixing of the mounting bracket 601 and thereby realizing the installation of the filter screen 602.

[0044] During use, when the sodium battery is working normally, the pressure sensor 408 monitors the internal gas pressure of the sodium battery in real time. At this time, the internal gas pressure is within the normal range, the pressure sensor 408 does not send a signal to the dual-axis motor 501, the dual-axis motor 501 remains stationary, the threaded rod 404 does not rotate, the moving plate 406 remains stationary in the limiting groove 405, and the pressure relief cover 402 is tightly closed in the pressure relief groove 401 through the connecting rod 407, sealing the pressure relief hole and preventing gas leakage inside the sodium battery.

[0045] During the pressure relief phase when the sodium battery experiences abnormal conditions such as puncture, overcharging, or short circuit, and the internal pressure rapidly increases and exceeds the set danger value, the pressure sensor 408 converts the monitored pressure signal into an electrical signal and transmits it to the dual-axis motor 501. Upon receiving the signal, the dual-axis motor 501 starts, and its two output ends drive the drive shaft 502 to rotate. The drive shaft 502 drives the threaded rod 404 to rotate through the meshing transmission of the bevel gear 503. When the threaded rod 404 rotates, the movable plate 406, which is threadedly connected to it, slides upward in the limiting groove 405. The movable plate 406 drives the pressure relief cover 402 to rise through the connecting rod 407, opening the pressure relief hole. The exhaust gas inside the sodium battery is discharged through the pressure relief groove 401. During the exhaust gas discharge process, the inclined pressure guide plate 409 guides the exhaust gas, changes the exhaust gas flow direction, makes the exhaust gas discharge more smoothly, reduces resistance, improves pressure relief efficiency, and buffers the pressure relief process to avoid excessive instantaneous pressure release that could impact the internal structure of the sodium battery.

[0046] During the pressure recovery sealing phase, as exhaust gas is continuously discharged, the internal pressure of the sodium battery gradually decreases. When the pressure sensor 408 detects that the pressure has dropped to the set safe value, it sends a signal to the dual-axis motor 501. The dual-axis motor 501 reverses, the threaded rod 404 rotates in the opposite direction, and the moving plate 406 slides downward in the limiting groove 405. Through the connecting rod 407, it drives the pressure relief cover 402 to descend, re-sealing the pressure relief hole and completing the pressure relief operation, thus restoring the sodium battery to a sealed state.

[0047] During the filtration and explosion prevention stage, the exhaust gas discharged during the depressurization process of the sodium battery passes through the filter screen 602 on one side of the mounting frame 601. The filter screen 602 intercepts and filters impurities and sparks in the exhaust gas to prevent external combustion or explosion accidents caused by the discharge of impurities and sparks, thus ensuring the safety of sodium battery use and reducing pollution to the external environment.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-safety sodium battery pressure relief assembly, characterized in that, Includes a top cover (1), the top of which is fixedly connected to two pressure relief shells (3), and two intelligent pressure relief mechanisms (4) are provided inside the two pressure relief shells (3), and two detachable filter anti-explosion mechanisms (6) are provided on one side of the two pressure relief shells (3). The two intelligent pressure relief mechanisms (4) include two pressure relief grooves (401) opened on the top of the top cover (1), two pressure relief holes opened on the inner bottom of the two pressure relief grooves (401), two pressure relief covers (402) adapted to them installed in the two pressure relief grooves (401), two U-shaped brackets (403) installed on one side of the two pressure relief shells (3), two threaded rods (404) rotatably connected to the inner side of the two U-shaped brackets (403), two limiting grooves (405) opened on the inner side of the two U-shaped brackets (403), and the outer surface of the two threaded rods (404) Two movable plates (406) are connected by a threaded connection, and the two movable plates (406) are slidably connected in two limiting grooves (405). Two connecting rods (407) are fixedly connected to the top of the two movable plates (406). The ends of the two connecting rods (407) away from the two movable plates (406) move through the two pressure relief shells (3) and are fixedly connected to the two pressure relief covers (402). A pressure sensor (408) is installed on the inner top of the top cover (1). A drive mechanism (5) for driving the two threaded rods (404) to rotate is provided on the top of the top cover (1).

2. The high-safety sodium battery pressure relief assembly according to claim 1, characterized in that: The two detachable filter explosion-proof mechanisms (6) include two mounting brackets (601), and two filter screens (602) are fixedly connected to the inner side of the two mounting brackets (601).

3. The high-safety sodium battery pressure relief assembly according to claim 2, characterized in that: Two mounting slots are provided on one side of the two pressure relief shells (3), and four positioning holes (603) are provided in the two mounting slots. Four positioning rods (604) are fixedly connected to one side of the two mounting brackets (601).

4. A high-safety sodium battery pressure relief assembly according to claim 3, characterized in that: Two grooves (605) are provided on one side of the two pressure relief shells (3), the two grooves (605) are connected to two mounting slots, two sliding plates (606) are slidably connected in the two grooves (605), and two limiting holes (607) are provided on the top of the two mounting brackets (601).

5. A high-safety sodium battery pressure relief assembly according to claim 4, characterized in that: Two limiting rods (608) are fixedly connected to the bottom of the two slide plates (606), and two telescopic rods (609) are fixedly connected to the top of the inner side of the two grooves (605). The bottom ends of the two telescopic rods (609) are fixedly connected to the two slide plates (606), and two return springs (610) are sleeved on the outer surface of the two telescopic rods (609).

6. A high-safety sodium battery pressure relief assembly according to claim 4, characterized in that: Two pull plates (611) are fixedly connected to one side of the two said skateboards (606), and four handles (612) are installed on one side of the two said mounting brackets (601).

7. A high-safety sodium battery pressure relief assembly according to claim 1, characterized in that: The drive mechanism (5) includes a dual-axis motor (501) fixedly installed on the top of the top cover (1). The dual-axis motor (501) is electrically connected to the pressure sensor (408). The two output ends of the dual-axis motor (501) are fixedly connected to two drive shafts (502).

8. A high-safety sodium battery pressure relief assembly according to claim 7, characterized in that: One end of each of the two drive shafts (502) is fixedly connected to the outer surface of the two threaded rods (404) with four bevel gears (503), and the four bevel gears (503) are meshed together.

9. A high-safety sodium battery pressure relief assembly according to claim 7, characterized in that: The top of the top cover (1) is fixedly connected to two support blocks (504), and the two drive shafts (502) are rotatably connected to the inner surfaces of the two support blocks (504).

10. A high-safety sodium battery pressure relief assembly according to claim 1, characterized in that: The intelligent pressure relief mechanism (4) also includes two air pressure guide plates (409) fixedly connected to the inner side of the two pressure relief shells (3). The two air pressure guide plates (409) are inclined, and the ends of the two connecting rods (407) away from the two moving plates (406) move through the two air pressure guide plates (409).

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