CN216590140U - Novel waterproof ventilative explosion-proof valve module of fire prevention star - Google Patents

Abstract

The utility model discloses a novel spark-proof, waterproof and breathable explosion-proof valve assembly, which comprises an outer casing, a front-end explosion-proof valve installed at the front end of the outer casing, and a tail-end explosion-proof valve arranged at the rear end of the outer casing. , flame, solid or colloidal solid-gas mixture, one or more substances pass through the shielding piece, the shielding piece is located between the front end explosion-proof valve and the rear end explosion-proof valve, and there are at least two baffles on the shielding piece, Each baffle plate has a plurality of ventilation holes, and the ventilation holes of two adjacent baffle plates are distributed in dislocation. The utility model integrates the functions of waterproofing, ventilation, preventing sparks and flames, explosion-proof and the like, and has the advantages of simple structure, convenient disassembly and assembly, stable product performance, and easy mass production and popularization and application. The unique anti-mars function of the utility model is very important, which can greatly improve the safety of the battery pack, and also reduce and eliminate potential safety risks and hidden dangers.

Description

A new type of anti-Mars waterproof breathable explosion-proof valve assembly

Technical field:

The utility model relates to the technical field of explosion-proof valves, in particular to a novel spark-proof, waterproof, breathable, and explosion-proof valve assembly.

Background technique:

Under the trend of vehicle electrification, the volume of electric vehicles in my country has grown rapidly. However, at the same time, electric vehicle fires and combustion accidents occur frequently. Electric vehicle safety issues have become the fundamental guarantee for the sustainable and healthy development of the new energy vehicle industry. Electric mandatory national standards such as "Safety Requirements for Electric Vehicles", "Safety Requirements for Electric Passenger Cars" and "Safety Requirements for Power Batteries for Electric Vehicles" have been released, which were officially implemented on January 1, 2020. The release and implementation put forward higher requirements for the electrical safety and functional safety of new energy vehicles, vehicle waterproofing, insulation performance, and battery thermal diffusion.

Electric vehicle power system battery pack, electronic control, motor, etc., as the core of new energy electric vehicle, its safety and working reliability are very important. In order to ensure its safe and stable work, it needs to be waterproof and dustproof, that is, it needs to be completely sealed in theory, but in a completely sealed state, once the internal short circuit, battery overcharge or overdischarge and other abnormal thermal runaway will generate and accumulate a large amount of High temperature and high pressure gas will also produce a large amount of solid-gas mixture containing solid or colloidal substances. If it cannot be discharged in time, violent fire, combustion and explosion will usually occur, resulting in heavy casualties and property losses.

Therefore, at present, the solution of installing one or more waterproof, breathable and explosion-proof valves on power system components such as battery packs is used to waterproof and explosion-proof the power battery system, so as to prevent or reduce the deflagration, blasting and other sudden abnormal accidents in the battery pack. casualties and property damage.

At present, the waterproof, breathable, and explosion-proof valves currently in common use are equipped with waterproof and breathable microporous membranes for gas circulation and exchange during normal use; at the same time, the built-in valve core module will also increase the gas pressure in the battery pack. , deflagration, explosion and other abnormal conditions, open it as a channel to discharge high temperature and high pressure gas, flame, sparks, combustion materials, etc. in the battery pack. Therefore, when an abnormal accident such as deflagration occurs in the battery pack, the valve core of the conventional explosion-proof valve will open, and while discharging high-temperature gas to the outside of the battery pack, it will also discharge a spark, flame, solid or colloidal solid-gas mixture, etc. And discharge, it will further ignite other built-in objects of the vehicle, thereby causing the combustion of the whole vehicle to intensify and explode, expanding the loss of personnel and property, and turning a small accident into a catastrophe. Further research and improvement.

In view of this, the inventors propose the following technical solutions.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a new type of spark-proof, waterproof, breathable, and explosion-proof valve assembly.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the new anti-Mars waterproof breathable explosion-proof valve assembly comprises an outer casing, a front-end explosion-proof valve installed at the front end of the outer casing and a tail-end explosion-proof valve arranged at the rear end of the outer casing, The outer casing is provided with a shielding sheet for blocking the passage of one or more substances in the spark, flame, solid or colloidal solid-gas mixture, and the shielding sheet is located between the front end explosion-proof valve and the tail end explosion-proof valve. The shielding sheet is provided with at least two baffles, each baffle has a plurality of ventilation holes, and the ventilation holes of the two adjacent baffles are distributed in dislocation.

Further, in the above technical solution, the ventilation holes of the front baffle are arranged at the upper part, and the ventilation holes of the rear baffle are arranged at the lower part, so as to form a dislocation distribution.

Further, in the above technical solution, the total cross-sectional area of all the ventilation holes in the front baffle is smaller than the total cross-sectional area of all the ventilation holes in the rear baffle.

Further, in the above technical solution, the diameter of the ventilation holes in the front baffle is larger than the diameter of the ventilation holes in the rear baffle, and the number of ventilation holes in the front baffle is smaller than the number of ventilation holes in the rear baffle.

Further, in the above technical solution, the shielding piece is formed by stamping from a metal sheet, and its longitudinal section is in the shape of a continuous zigzag; M-shaped.

Further, in the above technical solution, both sides of the shielding sheet are respectively bent to form a first elastic pressing portion and a second elastic pressing portion, and the first elastic pressing portion and the second elastic pressing portion are respectively formed with the first elastic pressing portion and the second elastic pressing portion. The inner walls on both sides of the outer casing are pressed against each other.

Further, in the above technical solution, a mounting hole is provided on the lower side of the front end of the outer casing, the front end explosion-proof valve is fixed on the mounting seat by a plurality of screws, so as to form a flange-type mounting structure, and the mounting seat is matched with a tightening nut. It is fixed at the mounting hole, and an inner sealing ring is also arranged between the mounting seat and the outer pipe body.

Further, in the above technical solution, the lower end of the mounting seat is also provided with an inner threaded hole for mounting with the battery pack box; the lower end surface of the mounting seat is provided with a protruding outer sealing ring, and the outer sealing ring is connected to the battery pack through the outer sealing ring. The battery pack case is in sealing contact.

Further, in the above technical solution, the outer casing includes an outer tube body, a plug body installed at the front end of the outer tube body, and an adapter installed at the rear end of the outer tube body. A first seal is provided, a second seal is provided between the periphery of the adapter and the outer pipe body, and the tail-end explosion-proof valve is penetrated in the adapter and extends into the outer pipe body; the front end The explosion-proof valve is installed on the lower side of the front end of the outer pipe body and extends into the outer pipe body.

Further, in the above technical solution, a protective sleeve is also sleeved on the front-end explosion-proof valve.

After adopting the above-mentioned technical scheme, the utility model has the following beneficial effects compared with the prior art:

1. The utility model integrates multiple functions such as waterproofing, ventilation, preventing sparks and flames, and explosion-proofing, and has a simple structure, convenient disassembly and assembly, stable product performance, and easy mass production and popularization and application.

2. The shielding sheet in the present invention is designed by dividing the multi-layer baffles, the upper and lower dislocation and non-same aperture vent holes, on the premise of ensuring that the overall exhaust volume of the present invention is not lost. Completely shield the sparks, flames, solid or colloidal solid-gas mixtures generated and discharged by the battery pack in the event of a sudden explosion or fire accident. The front-end explosion-proof valve and tail-end explosion-proof valve equipped with the battery pack will not cause secondary disasters or ignite the vehicle due to the discharge of sparks and flames while the exhaust pressure is relieved, resulting in more serious property and personnel losses; It will not block the exhaust passage of the tail-end explosion-proof valve due to the solid or colloidal solid-gas mixture discharged at the same time, causing the function of the tail-end explosion-proof valve to be damaged or not to work and not exhaust, thus causing the battery pack to fail due to failure when abnormal. It can quickly exhaust and release pressure and cause a sharp increase in internal pressure, resulting in more serious consequences such as battery pack deformation, damage or high-pressure explosion. Therefore, the unique anti-mars function of the present invention is very important, which can greatly improve the safety of the battery pack, and also reduce and eliminate potential safety risks and hidden dangers.

Description of drawings:

Fig. 1 is the perspective view of the present utility model;

Fig. 2 is the perspective view of shielding sheet in the present utility model;

Fig. 3 is the three-dimensional exploded view of the present utility model;

4 is a sectional view of the working state of the present invention.

Detailed ways:

The present utility model will be further described below with reference to specific embodiments and accompanying drawings.

As shown in Figures 1-4, it is a new type of spark-proof, waterproof and breathable explosion-proof valve assembly, which includes an outer casing 1, a front-end explosion-proof valve 2 installed at the front end of the outer casing 1, and a tail-end explosion-proof valve 3 arranged at the rear end of the outer casing 1. , wherein the front-end explosion-proof valve 2 and the tail-end explosion-proof valve 3 are relatively mature products on the market, and their specific structures will not be described in detail.

Under normal conditions, both the front-end explosion-proof valve 2 and the tail-end explosion-proof valve 3 use waterproof and breathable microporous membranes for gas circulation and exchange during normal use, so that the inner cavity of the outer casing 1 can be ventilated to the outside world, and when in use, The front-end explosion-proof valve 2 is installed on the battery pack box, so that the battery pack box can also be ventilated with the outside world. When abnormal conditions such as gas pressure increase, deflagration, explosion, etc. occur in the battery pack box, the front-end explosion-proof valve 2 and the tail-end explosion-proof valve 3 are both in an open state, serving as a channel for discharging high temperature and high pressure gas, flame, sparks, combustion substances, etc. in the battery pack box.

In order to solve the problem that the front explosion-proof valve 2 and the tail-end explosion-proof valve 3 will only form a smooth exhaust pressure relief channel when the valve core is opened. The problem of a situation in which a solid-gas mixture, etc., is discharged together, thereby igniting other items in the vehicle, causing the vehicle to burn or the vehicle to explode.

The utility model has made the following design: the outer casing 1 is provided with a shielding sheet 4 for blocking the passage of one or more substances in sparks, flames, solids or colloidal solid-gas mixtures, wherein the shielding The sheet 4 is located between the front-end explosion-proof valve 2 and the tail-end explosion-proof valve 3. The shielding sheet 4 has at least two baffles 41, each baffle 41 has a plurality of ventilation holes 411, and the adjacent two baffles 41 have at least two baffles 41. The ventilation holes 411 are distributed in a staggered manner. When both the front-end explosion-proof valve 2 and the rear-end explosion-proof valve 3 are in the open state, they serve as channels for discharging high-temperature and high-pressure gas, flame, sparks, combustion substances, etc. in the battery pack box. Gas, sparks, flame, solid or colloidal solid-gas mixture, etc. are discharged into the inner cavity of the outer casing 1 through the exhaust channel formed after the valve core of the front explosion-proof valve 2 is opened, and are blocked by the baffle plate 41 on the shielding sheet 4, It can only pass through the ventilation holes 411 of the baffles 41, and because the ventilation holes 411 of the two adjacent baffles 41 are dislocated, it can effectively filter out sparks, flames, solid or colloidal solid-gas mixtures. , only the gas is discharged from the exhaust channel formed after the valve core of the explosion-proof valve 2 at the rear end is opened to the outside of the battery pack to complete the actions of exhaust, pressure relief, explosion-proof, and spark-proof.

The utility model solves the problem that the explosion-proof valve of the battery pack needs to realize the upgrading of product functions and increase the protection against sparks and the leakage of open fire under the premise of ensuring that the basic functions of the explosion-proof valve of the battery pack remain unchanged. It is a new type of product that is easy to install, easy to install, and easy to maintain.

The structure of the shielding sheet 4 will be further elaborated below: the shielding sheet 4 is formed by stamping a metal sheet, and its longitudinal section is in the shape of a continuous figure; or, the shielding sheet 4 is punched and formed by a metal sheet, and its longitudinal section is continuous. V-shaped or M-shaped. That is to say, the shielding sheet 4 is in a folded structure, and is formed with a plurality of baffles 41 , wherein the number of the baffles 41 can be increased or decreased according to the specific product size. In order to improve the blocking effect, the baffles 41 The number is at least two pieces, and each piece of baffle 41 is designed with ventilation holes with different numbers, sizes and shapes at different positions.

The ventilation holes 411 of the front baffle 41 are arranged at the upper part, and the ventilation holes 411 of the rear baffle 41 are arranged at the lower part to form a dislocation distribution, so as to better block the sparks and flames entering the inner cavity of the outer casing 1 , solid or colloidal solid-gas mixture, so as to filter out sparks, flames, solid or colloidal solid-gas mixtures, and prevent these sparks, flames, solid or colloidal solid-gas mixtures from passing through the valve of the explosion-proof valve 2 at the tail end The exhaust channel formed after the core is opened is discharged to the outside of the battery pack, so that only gas is discharged from the exhaust channel formed after the valve core of the explosion-proof valve 2 at the rear end is opened to the outside of the battery pack to complete exhaust, pressure relief, explosion-proof, and discharge. Action against Mars.

The total cross-sectional area of all the ventilation holes 411 in the former baffle 41 is smaller than the total cross-sectional area of all the ventilation holes 411 in the latter baffle 41 , wherein the diameter of the ventilation holes 411 in the former baffle 41 is larger than that of the latter baffle 41 The diameter of the ventilation holes 411 in the middle, and the number of the ventilation holes 411 in the front baffle 41 is smaller than the number of the ventilation holes 411 in the rear baffle 41, this design can be achieved by blocking layer by layer. The solid-gas mixture is blocked, and the further back, the larger the number and the smaller the size of the ventilation holes 411, so as to have a stronger barrier, so as to prevent sparks, flames, solid or colloidal solid-gas mixture from being able to Through this, the purpose of complete isolation is achieved, and it is ensured that these sparks, flames, solid or colloidal solid-gas mixtures are discharged to the outside of the battery pack from the exhaust passage formed after the valve core of the explosion-proof valve 2 at the rear end is opened.

The above-mentioned shielding sheet 4 is designed by dividing the multi-level baffles 41 and the vent holes 411 with the upper and lower dislocation and non-same aperture, so as to ensure that the overall exhaust volume of the present invention is not lost, it can completely shield the battery pack from the protrusion. Sparks, flames, solid or colloidal solid-gas mixtures produced and discharged during explosions and combustion accidents. The front-end explosion-proof valve and tail-end explosion-proof valve equipped with the battery pack will not cause secondary disasters or ignite the vehicle due to the discharge of sparks and flames while the exhaust pressure is relieved, resulting in more serious property and personnel losses; It will not block the exhaust passage of the tail-end explosion-proof valve due to the solid or colloidal solid-gas mixture discharged at the same time, causing the function of the tail-end explosion-proof valve to be damaged or not to work and not exhaust, thus causing the battery pack to fail due to failure when abnormal. It can quickly exhaust and release pressure and cause a sharp increase in internal pressure, resulting in more serious consequences such as battery pack deformation, damage or high-pressure explosion. Therefore, the unique anti-mars function of the present invention is very important, which can greatly improve the safety of the battery pack, and also reduce and eliminate potential safety risks and hidden dangers.

The ventilation holes are set to be circular, but not limited to circular, and can also be set to special-shaped holes such as square, diamond, "fish scale holes", etc., in order to change the open flame ejection route and prevent the open flame from being ejected out of the battery box.

A first elastic pressing portion 42 and a second elastic pressing portion 43 are respectively formed on both sides of the shielding sheet 4 by bending. The inner walls on both sides are pressed against each other, and since the shielding sheet 4 itself has a certain elastic force, the first elastic pressing portion 42 and the second elastic pressing portion 43 are respectively pressed against the inner walls on both sides of the outer casing 1, so that the shielding can be guaranteed. The sheet 4 is stably installed inside the outer casing 1, and there is no need to design additional structures to fix it, which is more convenient to assemble.

A mounting hole 10 is provided on the lower side of the front end of the outer casing 1. The front end explosion-proof valve 2 is fixed on the mounting seat 5 through a plurality of screws 51 to form a flange-type mounting structure. At the mounting hole 10, the mounting structure is extremely simple, and the installation is simple; wherein, the mounting seat 5 passes through the mounting hole 10 from bottom to top, and the fastening nut 52 is screwed on the mounting seat 5 from top to bottom. And it is fixed at the mounting hole 10 in a way of clamping up and down. An inner sealing ring 53 is also arranged between the mounting seat 5 and the outer pipe body 11 , so as to achieve the purpose of sealing installation.

The lower end of the mounting seat 5 is also provided with an internal threaded hole 54 for being installed with the battery pack case; when the utility model is installed with the battery pack case, after opening the hole at the corresponding position of the battery pack case installation part, the A screw is screwed through the through hole and screwed into the inner threaded hole 54 to perform the lock installation, which is simple and convenient to operate, easy to maintain and less time-consuming. At the same time, the lower end surface of the mounting seat 5 is provided with a protruding outer sealing ring 55, which is in sealing contact with the battery pack box through the outer sealing ring 55, which plays a sealing role and ensures the sealing and protection of the component product installation site. level requirements.

The outer casing 1 includes an outer pipe body 11, a plug body 12 installed at the front end of the outer pipe body 11, and an adapter 13 installed at the rear end of the outer pipe body 11. The above-mentioned mounting hole 10 is provided on the lower side of the front end of the outer casing 1, The outer pipe body 11 is a metal pipe. When assembling, the front-end explosion-proof valve 2 is first fixed on the mounting seat 5 through a number of screws 51, and the mounting seat 5 is fixed at the mounting hole 10 with the tightening nut 52. Assemble and fix the front end explosion-proof valve 2 and the outer pipe body 11 together; then install the plug body 12 on the front end of the outer pipe body 11, then put the shielding sheet 4 in the outer pipe body 11, and finally pass the tail end explosion-proof valve 3 through. It is arranged in the adapter 13, and the adapter 13 is fixed to the rear end of the outer casing 1. Of course, the above is only one of the installation methods.

A first sealing member 14 is arranged between the periphery of the plug body 12 and the outer tube body 11 , so that the plug body 12 and the outer tube body 11 form a sealing assembly structure. The second sealing member 15 makes the adapter 13 and the outer tube body 11 form a sealing assembly structure, wherein the rear explosion-proof valve 3 also extends into the outer tube body 11; the front explosion-proof valve 2 also extends into the outer tube inside body 11.

The front-end explosion-proof valve 2 adds a protective sleeve 20 on the basis of the traditional waterproof and breathable explosion-proof valve; functionally, it can realize the role of a protective gas exchange channel. When the front-end explosion-proof valve 2 is working normally, the gas inside and outside the battery pack will be exchanged through the built-in waterproof and breathable membrane of the explosion-proof valve; without the protection of the protective sleeve, the dust, particles and other foreign objects in the battery pack will remain in the battery pack for a long time. During the life cycle, it will accumulate and block in the waterproof breathable membrane or the breathable channel, thus affecting the breathability or causing the airtightness, causing the function loss or failure of the explosion-proof valve. However, after the protection sleeve 20 is added to the front explosion-proof valve 2, this problem can be well solved.

The tail-end explosion-proof valve 3 is the same as the traditional waterproof and breathable explosion-proof valve, and has similar structure and product performance. The valve body of the tail-end explosion-proof valve is set as an external thread, and the inner hole of the adapter 13 is set as an internal thread of the same specification, and the two are directly fixed and fastened by thread-locking.

Specifically, an installation groove 131 and a hole 132 penetrating the bottom of the installation groove 131 are provided in the middle of the adapter 13 ; the tail-end explosion-proof valve 3 is fixed in the installation groove 131 , and the tail-end explosion-proof valve 3 Partially extends through the hole 132 into the inner cavity of the outer tube body 11 . Wherein, the tail explosion-proof valve 3 and the adapter 12 are fastened with a standard screw with an external thread; or, the inner wall of the installation groove 131 is provided with an internal thread, and the valve outer wall of the tail explosion-proof valve is provided with a corresponding External thread, which is fastened and installed by threaded screw lock.

A first sealing ring 30 is further arranged between the tail-end explosion-proof valve 3 and the adapter 12 , and the sealing performance between the two can be ensured by the first sealing ring 30 .

To sum up, the utility model integrates the functions of waterproofing, ventilation, preventing sparks and flames, explosion-proof, etc., and has a simple structure, convenient disassembly and assembly, stable product performance, and easy mass production and popularization and application. The shielding sheet 4 in the present invention can be completely shielded under the premise of ensuring that the overall exhaust volume of the present invention is not lost by the design of the multi-layer baffles 41 and the vent holes 411 that are dislocated up and down and have different diameters. Sparks, flames, solid or colloidal solid-gas mixtures produced and discharged by battery packs during sudden explosions and combustion accidents. The front-end explosion-proof valve and tail-end explosion-proof valve equipped with the battery pack will not cause secondary disasters or ignite the vehicle due to the discharge of sparks and flames while the exhaust pressure is relieved, resulting in more serious property and personnel losses; It will not block the exhaust passage of the tail-end explosion-proof valve due to the solid or colloidal solid-gas mixture discharged at the same time, causing the function of the tail-end explosion-proof valve to be damaged or not to work and not exhaust, thus causing the battery pack to fail due to failure when abnormal. It can quickly exhaust and release pressure and cause a sharp increase in internal pressure, resulting in more serious consequences such as battery pack deformation, damage or high-pressure explosion. Therefore, the unique anti-mars function of the present invention is very important, which can greatly improve the safety of the battery pack, and also reduce and eliminate potential safety risks and hidden dangers.

Of course, the above are only specific embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made in accordance with the structures, features and principles described in the scope of the patent application of the present invention are not intended to limit the scope of the present invention. It should be included in the scope of the patent application of this utility model.

Claims (10)

1. A novel spark-proof waterproof ventilating explosion-proof valve component comprises an outer shell (1), a front end explosion-proof valve (2) arranged at the front end of the outer shell (1) and a tail end explosion-proof valve (3) arranged at the rear end of the outer shell (1),

the method is characterized in that: the explosion-proof gas-liquid separation device is characterized in that a shielding sheet (4) used for blocking one or more substances in a mars, flame, solid or colloidal solid-gas mixture from passing through is arranged in the outer shell (1), the shielding sheet (4) is located between the front-end explosion-proof valve (2) and the tail-end explosion-proof valve (3), at least two baffle plates (41) are arranged on the shielding sheet (4), each baffle plate (41) is provided with a plurality of air holes (411), and the air holes (411) of the two adjacent baffle plates (41) are distributed in a staggered manner.

2. The novel fire-resistant water-proof breathable explosion-proof valve assembly according to claim 1, characterized in that: the vent holes (411) of the front baffle plate (41) are arranged at the upper part, and the vent holes (411) of the rear baffle plate (41) are arranged at the lower part and distributed in a staggered mode.

3. The novel fire-resistant water-proof breathable explosion-proof valve assembly according to claim 1, characterized in that: the total cross-sectional area of all the vent holes (411) in the front baffle plate (41) is smaller than that of all the vent holes (411) in the rear baffle plate (41).

4. The novel fire-resistant water-proof breathable explosion-proof valve assembly according to claim 3, characterized in that: the diameter of the vent holes (411) in the front baffle plate (41) is larger than that of the vent holes (411) in the rear baffle plate (41), and the number of the vent holes (411) in the front baffle plate (41) is smaller than that of the vent holes (411) in the rear baffle plate (41).

5. The novel mars waterproof breathable explosion-proof valve assembly of any one of claims 1-4, wherein: the shielding piece (4) is formed by punching a metal sheet, and the longitudinal section of the shielding piece is in a continuous zigzag shape; or the shielding piece (4) is formed by punching a metal sheet, and the longitudinal section of the shielding piece is in a continuous V shape or M shape.

6. The novel fire-resistant star water-proof breathable explosion-proof valve assembly according to claim 5, wherein: the two sides of the shielding piece (4) are respectively bent to form a first elastic pressing part (42) and a second elastic pressing part (43), and the first elastic pressing part (42) and the second elastic pressing part (43) are respectively pressed against the inner walls of the two sides of the outer shell (1).

7. The novel fire-resistant star water-proof breathable explosion-proof valve assembly according to claim 5, wherein: the anti-explosion valve is characterized in that a mounting hole (10) is formed in the lower side of the front end of the outer shell (1), the front-end anti-explosion valve (2) is fixed on the mounting seat (5) through a plurality of screw rods (51) to form a flange type mounting structure, the mounting seat (5) is fixed in the mounting hole (10) through a fastening nut (52) in a matched mode, and an inner sealing ring (53) is further arranged between the mounting seat (5) and the outer shell (11).

8. The novel fire-resistant water-proof breathable explosion-proof valve assembly according to claim 7, wherein: the lower end of the mounting seat (5) is also provided with an internal thread hole (54) for mounting with a battery pack box body; and a convex outer sealing ring (55) is arranged on the lower end face of the mounting seat (5) and is in sealing contact with the battery pack box body through the outer sealing ring (55).

9. The novel fire-resistant star water-proof breathable explosion-proof valve assembly according to claim 7, wherein: the outer shell (1) comprises an outer tube body (11), a plug body (12) arranged at the front end of the outer tube body (11) and an adapter (13) arranged at the rear end of the outer tube body (11), a first sealing element (14) is arranged between the periphery of the plug body (12) and the outer tube body (11), a second sealing element (15) is arranged between the periphery of the adapter (13) and the outer tube body (11), and the tail end explosion-proof valve (3) penetrates through the adapter (13) and extends into the outer tube body (11); the front end explosion-proof valve (2) is arranged at the lower side of the front end of the outer tube body (11) and extends into the outer tube body (11).

10. The novel mars waterproof breathable explosion-proof valve assembly of any one of claims 1-4, wherein: and the front-end explosion-proof valve (2) is also sleeved with a protective sleeve (20).

Images