CN220727221U - Double-opening flip type explosion-proof pressure release valve - Google Patents

Abstract

The utility model relates to the technical field of battery explosion prevention, in particular to a double-opening flip type explosion-proof pressure release valve, which comprises a valve body, a rotating assembly and a valve cover assembly; the valve cover assembly comprises a first valve cover and a second valve cover; the rotating assembly comprises an elastic piece; the valve body is provided with a through exhaust hole; the valve body is rotationally connected with the valve cover assembly through the rotating assembly; the valve cover component is covered with the valve body under the action of the elastic component. The vent holes are opened through the flip cover, so that the pressure relief area is larger, the obstruction is smaller when the gas is exhausted, and the pressure relief efficiency is higher; meanwhile, the cover body can prevent high-pressure gas from being discharged in a specific direction, so that damage to external parts is avoided.

Description

Double-opening flip type explosion-proof pressure release valve

[ field of technology ]

The utility model relates to the technical field of battery explosion prevention, in particular to a double-opening flip type explosion-proof pressure release valve.

[ background Art ]

The power battery, such as lithium ion battery, has the advantages of light weight, small volume, large capacity, high power, no pollution and the like, and becomes an ideal power supply in various fields such as portable electronic equipment, electric vehicles and the like. However, when an abnormality occurs in the lithium battery, such as a short circuit, overcharge, overdischarge, etc., a large amount of gas is generated inside the lithium battery, causing a rapid increase in the internal pressure of the lithium battery, and at this time, if the generated large amount of gas is not excluded, the lithium battery may explode, causing a safety accident.

In order to ensure the safety of the power battery, an explosion-proof valve structure is generally added on the structure of the power battery. The maximum pressure release area of the traditional piston type explosion-proof valve is limited by the exhaust hole of the valve body, and the valve body and the piston block the exhaust flow direction, so that the pressure release efficiency is reduced.

[ utility model ]

The utility model provides a double-opening flip type explosion-proof pressure relief valve, which aims to solve the problem of low pressure relief efficiency of the existing explosion-proof valve.

The utility model provides a double-opening flip type explosion-proof pressure relief valve, which comprises a valve body, a rotating assembly and a valve cover assembly;

the valve cover assembly comprises a first valve cover and a second valve cover; the rotating assembly comprises an elastic piece; the valve body is provided with a through exhaust hole, and the valve body is rotationally connected with the valve cover assembly through the rotating assembly; the valve cover assembly is covered with the valve body under the action of the elastic piece.

Preferably, the rotating assembly comprises a rotating shaft, the rotating shaft is inserted on the valve body, and a separating piece is arranged on the valve body.

Preferably, the valve body side wall is provided with a connecting hole, the connecting hole is provided with a fixing piece, and the fixing piece is matched with the connecting hole to fix the rotating shaft on the valve body.

Preferably, a ventilation assembly is further arranged on the valve body and/or the valve cover assembly.

Preferably, the ventilation assembly further comprises a moisture barrier module.

Preferably, the first valve cover and the second valve cover are respectively provided with a connecting piece matched with the rotating shaft, an elastic gasket is arranged between every two adjacent connecting pieces, and a limiting piece is arranged at the position, close to the side wall of the valve body, of the rotating shaft.

Preferably, a first sealing groove is formed in one end, close to the valve cover assembly, of the valve body, the first sealing groove is partially formed in the partition piece, and a first sealing piece is arranged on the first sealing groove; when the valve cover assembly is covered with the valve body, the first sealing piece is matched with the valve cover assembly to seal the exhaust hole under the action of the elastic piece.

Preferably, a second sealing groove is formed in one end, away from the valve cover assembly, of the valve body, and a second sealing piece is arranged on the second sealing groove.

Preferably, the valve cover component is a magnetic attraction piece and/or the valve cover component is provided with the magnetic attraction piece.

Preferably, the side of the valve body is formed with at least one outwardly protruding lug, on which a mounting hole is provided.

Compared with the prior art, the double-opening flip type explosion-proof pressure release valve has the following advantages:

1. the utility model relates to a double-opening flip type explosion-proof pressure relief valve, which comprises a valve body, a rotating assembly and a valve cover assembly; the valve cover assembly comprises a first valve cover and a second valve cover; the rotating assembly comprises an elastic piece; the valve body is provided with a through exhaust hole, and the valve body is rotationally connected with the valve cover assembly through the rotating assembly; the valve cover assembly is covered with the valve body under the action of the elastic piece. The vent holes are opened through the flip cover, so that the pressure relief area is larger, the obstruction is smaller when the gas is exhausted, and the pressure relief efficiency is higher; meanwhile, the cover body can prevent high-pressure gas from being discharged in a specific direction, so that damage to external parts is avoided.

2. The rotating assembly comprises a rotating shaft, the rotating shaft is inserted into a valve body, and a separating piece is arranged on the valve body. The through exhaust holes on the valve body are divided into a plurality of through the partition pieces, and the exhaust holes are matched with the valve cover assembly to guide the exhaust direction of gas during pressure relief, so that the influence of the discharge of a large amount of gas to parts close to the pressure relief valve in one direction is avoided.

3. The side wall of the valve body is provided with a connecting hole, the connecting hole is provided with a fixing piece, and the fixing piece is matched with the connecting hole to fix the rotating shaft on the valve body. The assembly position of the rotating shaft is limited through the design of the connecting hole, so that preparation is made in advance for the subsequent assembly process; simultaneously, utilize the fixed pivot of mounting fixed, play spacing effect, avoid the valve gap to rotate and lead to the pivot to shift and break away from the valve body.

4. The valve body and/or the valve cover assembly are/is also provided with a ventilation assembly. It is understood that the ventilation assembly can isolate liquid and does not influence the passage of gas, thereby realizing waterproof ventilation function.

5. The ventilation assembly of the present utility model further comprises a moisture barrier module. It can understand that wet subassembly can prevent external moisture to enter into the sealed box under normal condition in, effectively solves sealed box inside humidity too high, the dew condensation problem to see through ventilative subassembly and realize waterproof ventilative function, in order to balance the internal and external atmospheric pressure of sealed box, can avoid the valve gap frequently to open, improve product life, make the product collect explosion-proof, waterproof ventilative, accuse wet multi-functional as an organic wholely, in order to have very strong market competition.

6. According to the utility model, the first valve cover and the second valve cover are respectively provided with a connecting piece matched with the rotating shaft, an elastic gasket is arranged between two adjacent connecting pieces, and a limiting piece is arranged at the position, close to the side wall of the valve body, of the rotating shaft. By arranging the elastic washers between the connecting pieces, the fit tolerance of the valve cover during rotation is compensated, and the connecting pieces are prevented from being worn due to direct contact during rotation; and a limiting piece is arranged between the rotating shaft and the valve body to limit the movement of a valve cover assembly arranged on the rotating shaft, so that the reduction of the sealing performance of the valve cover assembly and the valve body caused by the displacement of the valve cover assembly is avoided.

7. The valve body is provided with a first sealing groove at one end close to the valve cover assembly, a first sealing groove part is arranged on the partition piece, and a first sealing piece is arranged on the first sealing groove; when the valve cover assembly is covered with the valve body, the first sealing element is matched with the valve cover assembly to seal the exhaust hole under the action of the elastic element. Through the design of the first sealing piece, the exhaust hole can be completely closed when the valve cover assembly is covered with the valve body, and gas is prevented from being discharged when the valve cover assembly is covered.

8. A second sealing groove is formed in one end, away from the valve cover assembly, of the valve body, and a second sealing piece is arranged on the second sealing groove. The air release valve is completely connected with the corresponding chamber in a sealing way through the second sealing piece, so that gas or liquid in the chamber is prevented from being continuously discharged from the connection part of the chamber and the air release valve.

9. The valve cover component is a magnetic attraction piece and/or the valve cover component is provided with the magnetic attraction piece. Through set up the magnetism and inhale the structure on the valve gap subassembly for when doing safety inspection to the air release valve, check out test set can use corresponding magnetism to inhale the structure and open the valve gap subassembly easily, and then makes the detection flow more simple and convenient, high-efficient.

10. The side surface of the valve body is provided with at least one lug protruding outwards, and the lug is provided with a mounting hole. Through the design, the air release valve is detachably fixed in the closed cavity needing explosion-proof air release, and damaged parts can be directionally replaced by the detachable design, so that the cost is reduced.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a valve body of a double-open flip type explosion-proof pressure relief valve according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a valve body of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a valve cover and a rotating assembly of a double-open flip type explosion-proof pressure relief valve according to an embodiment of the present utility model.

Fig. 5 is a schematic structural diagram II of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

FIG. 6 is an exploded view of a vent assembly for a double-open flip-type explosion-proof pressure relief valve according to an embodiment of the present utility model.

Fig. 7 is a cross-sectional view of a venting assembly for a dual-open flip-type explosion-proof pressure relief valve according to an embodiment of the present utility model.

Fig. 8 is an exploded view of a venting assembly of a dual-open flip-type explosion-proof pressure relief valve according to an embodiment of the present utility model.

Fig. 9 is a cross-sectional view of a moisture blocking module of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

Fig. 10 is a cross-sectional view of a second moisture barrier of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

Fig. 11 is a second cross-sectional view of a moisture blocking module of a double-open flip type explosion-proof pressure release valve according to an embodiment of the present utility model.

The attached drawings are used for identifying and describing:

100. double-opening flip type explosion-proof pressure release valve; 1. a valve body; 2. a rotating assembly; 3. a valve cover assembly; 4. a ventilation assembly; 5. a moisture barrier module;

11. a first exhaust hole; 12. a second exhaust hole; 13. a partition; 14. a first seal groove; 15. a second seal groove; 16. a first seal; 17. a second seal; 18. a lug; 19. a step; 181. a mounting hole;

21. a rotating shaft; 22. an elastic member; 23. an elastic washer; 24. a limiting piece; 25. a connection hole; 26. a fixing member;

31. a first valve cover; 32. a second valve cover; 33. a connecting piece;

51. a fastener; 511. a first air hole; 712. a first sleeve; 52. a first tuning control; 53. a first moisture barrier; 531. a second air hole; 532. a moisture barrier ring; 7321. a second sleeve; 533. a gasket; 54. a second moisture barrier; 541. a piston; 5411. a guide rod; 5412. a sealing plate; 542. a connecting plate; 55. a second control; 56. and a third seal.

[ detailed description ] of the utility model

The present utility model will be described in further detail with reference to the accompanying drawings and examples of implementation in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 4, a first embodiment of the present utility model provides a dual-open flip type explosion-proof pressure relief valve 100, which comprises a valve body 1, a rotating assembly 2 and a valve cover assembly 3; the rotating assembly 2 comprises an elastic member 22; the valve cover assembly 3 comprises a first valve cover 31 and a second valve cover 32, and a valve body 1 is provided with a through exhaust hole; the valve body 1 is rotatably connected with the valve cover assembly 3 through the rotating assembly 2, and the valve cover assembly is covered with the valve body under the action of the elastic piece.

It should be noted that, the double-open flip type explosion-proof pressure release valve 100 provided by the utility model is generally arranged on an automobile battery pack to seal the battery pack, when the pressure in the cavity rises to a preset threshold value, the valve cover rotates upwards relative to the valve body 1 under the action of pressure difference so as to enable the gas in the sealed cavity to be discharged to the outside to reduce the pressure in the cavity, thereby realizing the rapid pressure reduction function and avoiding explosion of the battery pack due to the overhigh internal pressure; when the air in the cavity is exhausted and the air pressure in the cavity is lower than a preset threshold value, the valve cover rotates to cover the exhaust hole with the valve body 1 under the action of the elastic piece 22, so that the waterproof effect is achieved.

As can be appreciated, compared with the conventional piston type explosion-proof pressure release valve, the double-opening flip type explosion-proof pressure release valve 100 provided by the utility model has larger pressure release area when being opened in a rotating way, small obstruction during gas discharge and higher pressure release efficiency. Further, the valve cover can be rotated to open and close to control the flow direction of the pressure release gas, so that other parts outside the battery pack are prevented from being influenced by the high-pressure gas, and the stability and safety of the double-opening flip type explosion-proof pressure release valve 100 are further improved.

Specifically, the elastic member 22 includes, but is not limited to, a torsion spring, a spring plate, a telescopic spring, a rubber spring, etc., and may be specifically selected according to the actual product structure, so long as the valve cover and the valve body 1 can be closed and covered, which is not limited herein. Therefore, the modification of the cover and the structure of the valve cover and the valve body 1 based on the present technical solution should be within the protection scope of the present utility model.

In an alternative embodiment, the middle of the exhaust hole is inserted with a rotating shaft 21, the elastic piece 22 is specifically a torsion spring, the torsion spring is sleeved on the rotating shaft 21, the first valve cover 31 and the second valve cover 32 are respectively arranged on two opposite sides of the torsion spring, and the elasticity of the torsion spring presses the first valve cover and the second valve cover towards the valve body 1 so that the valve cover is covered with the valve body 1 in a direction away from the rotating shaft 21 to control the high-pressure gas to be split and discharged to two opposite sides.

In another alternative embodiment, the first valve cover 31 and the second valve cover 32 are respectively fixed on two opposite sides of the exhaust hole, and the opening and closing direction of the first valve cover and the second valve cover is towards the middle of the exhaust hole. The valve cover is opened towards the middle to promote the high-pressure gas to be discharged from the middle of the exhaust hole, so that the influence of the gas on the circumferential parts of the double-opening flip type explosion-proof pressure release valve 100 is avoided.

Further, according to actual requirements, the first valve cover 31 and the second valve cover 32 may set the same or different pressure thresholds, so that the valve cover assembly 3 adaptively opens one valve cover or two valve covers according to the pressure value in the cavity, so as to meet different pressure relief requirements.

It should be noted that the elastic member 22 is disposed on a side of the valve cover assembly 3 facing away from the exhaust hole, i.e., located outside. The elastic piece 22 is arranged outside to avoid reducing the pressure relief area of the double-opening flip type explosion-proof pressure relief valve 100, and can not obstruct the pressure relief and the exhaust; meanwhile, the assembly is simpler and more efficient.

Further, the rotating assembly 2 includes a rotating shaft 21, and the valve body 1 is provided with a partition 13.

In an alternative embodiment, the vent hole penetrating the valve body 1 is divided into two left and right vent holes by the partition 13, and the first and second valve caps 31 and 32 are sealed with the valve body 1 after being covered with the first and second vent holes 11 and 12, respectively. Specifically, the opening and closing directions of the first valve cover 31 and the second valve cover 32 are different from the opening and closing direction of the valve body 1 to achieve the effect of gas split, that is, the gas is discharged from the first exhaust hole 11 and the second exhaust hole 12 in different directions, so that a great amount of high-pressure gas is prevented from being discharged in one direction to affect parts outside the valve body. It should be understood that, according to actual needs, the partition 13 may divide the exhaust hole into a specific number and cooperate with the cover direction of the valve cover assembly 3, so as to guide the exhaust direction of the gas during pressure release, and avoid that a large amount of gas is exhausted in one direction to affect the parts close to the double-open flip type explosion-proof pressure release valve 100.

Further, the side wall of the valve body 1 is provided with a connecting hole 25. The design allows the connecting hole 25 to define the assembly position of the rotating shaft 21, which provides a basis for the subsequent assembly process.

Specifically, the connecting hole 25 is provided with a fixing member 26, and the fixing member 26 cooperates with the connecting hole 25 to fix the rotary shaft 21 to the valve body 1. The rotary shaft 21 is fixed by the fixing piece 26, and meanwhile, the limiting effect is achieved, and the rotary shaft 21 is prevented from being shifted to be separated from the valve body 1 due to rotation of the valve cover.

Illustratively, in a preferred embodiment, the connecting hole 25 is specifically a through hole for accommodating the rotating shaft 21, which is disposed above the length direction of the partition 13, the rotating shaft 21 is inserted into the valve body 1 through the connecting hole 25, and the fixing member 26 is assembled to the connecting hole 25 from the outer wall of the valve body 1 and cooperates with the rotating shaft 21 to limit the movement of the rotating shaft 21 in the length direction, so as to prevent the rotating shaft 21 from being displaced away from the valve body 1 due to the rotation of the valve cover.

The fixing member 26 and the connecting hole 25 may be threaded, rivet, or key, and may be specifically set according to the actual product, so long as the fixing member is fixed to the connecting hole and plays a role in limiting the rotation shaft 21, and the limitation is not excessive.

Further, the first valve cover 31 and the second valve cover 32 are respectively provided with a connecting piece 33 matched with the rotating shaft 21, and an elastic gasket 23 is arranged between two adjacent connecting pieces.

The connecting members 33 are disposed on the sides of the first and second valve caps 31 and 32 away from the exhaust hole. The specific connecting piece 33 is provided with a through hole with a diameter slightly larger than that of the rotating shaft 21, and the connecting piece 33 is sleeved on the rotating shaft 21 and is in rotating connection with the rotating shaft 21. It should be understood that two connecting pieces 33 are provided on each valve cover, and when the first valve cover 31 and the second valve cover 32 are sleeved on the rotating shaft 21, an elastic washer 23 is sleeved between two adjacent connecting pieces 33 to compensate for the fit tolerance of the valve covers when rotating, so as to prevent the adjacent connecting pieces 33 from wearing due to direct contact when rotating.

Further, a limiting piece 24 is arranged at the position of the rotating shaft 21 close to the side wall of the valve body 1.

It can be understood that the limiting members 24 sleeved at two ends of the rotating shaft 21, which are close to the side wall of the valve body 1, are specifically elastic limiting members 24, and the limiting members 24 are abutted against the side wall of the valve body 1 and the connecting members 33 so as to limit the movement of the valve cover assembly 3 mounted on the rotating shaft 21, and prevent the valve cover assembly 3 from rotating to cause displacement of the valve cover, thereby reducing the sealing performance of the valve cover and the valve body 1.

Further, a first sealing groove 14 is formed in one end, close to the valve cover assembly 3, of the valve body 1, a first sealing groove 14 is partially formed in the partition piece 13, and a first sealing piece 16 is arranged on the first sealing groove 14; when the valve cover assembly 3 is covered with the valve body 1, the first sealing piece 16 is matched with the valve cover assembly 3 to seal the exhaust hole under the action of the elastic piece 22.

In one possible embodiment, a connecting step 19 is provided between the exhaust hole and the side wall of the valve body 1, the partition 13 is connected with the step 19, and the first sealing groove 14 comprises a straight sealing groove formed in the partition 13 and an annular sealing groove formed in the step, which are communicated with each other. The first seal groove 14 has a first seal 16 interference fit thereon.

The linear seal grooves of the partition 13 are provided with corresponding linear seals, and the annular seal grooves on the steps are provided with corresponding annular seals. The first sealing member 16 specifically includes a linear sealing member provided on the partition member 13 and an annular sealing member provided on the step. It will be appreciated that the linear seal and the annular seal may be of a split design or may be of a unitary design.

Illustratively, in a preferred embodiment, the first seal 16 is an annular seal and a linear seal integrally formed therewith intermediate the annular seals, the shape of the first seal 16 conforming specifically to the shape of the first seal groove 14. The integral formation of the first seal 16 ensures a better sealing effect.

It can be appreciated that the first seal groove 14 is in interference fit with the first seal member 16, so that the vent hole can be completely closed when the valve cover assembly 3 is covered with the valve body 1, and air leakage at the joint of the valve body 1 and the valve cover in the covered state is avoided.

Further, a second sealing groove 15 is formed in one end, away from the valve cover assembly 3, of the valve body 1, and a second sealing piece 17 is arranged on the second sealing groove 15.

It will be appreciated that the second seal groove 15 is disposed at the end of the valve body 1 away from the valve cover assembly 3, i.e. near the battery pack, and the second seal groove 15 is in interference fit with the second seal member 17, so that the double-open flip type explosion-proof pressure release valve 100 is in airtight connection with the battery pack, and air leakage between the air release valve and the battery pack is avoided.

Further, the valve cover assembly 3 is a magnetic attraction piece and/or the valve cover assembly 3 is provided with the magnetic attraction piece.

It can be appreciated that the valve cover assembly 3 is a magnetic attraction piece and/or the valve cover assembly 3 is provided with a magnetic attraction piece, so that the valve cover assembly 3 can be configured with a special inflation detection device with a permanent magnet or an electromagnet, the special inflation detection device can suck the valve cover assembly 3 provided with the magnetic attraction piece or the valve cover assembly 3 with magnetic absorption capability in a magnetic attraction mode, thereby opening the double-opening flip type explosion-proof pressure relief valve 100 from the outside, and inflating the battery pack chamber to perform air tightness detection, and the air tightness detection function is realized.

In one possible embodiment, the valve cover assembly 3 is a magnetic attraction member, which is specifically made of a material that can be attracted by a magnet, including but not limited to iron, copper, cobalt, nickel, etc. The valve cover assembly 3 is preferably a magnet sheet, which can have stronger adsorption capacity when the air tightness detection is performed, and can further strengthen the rigidity of the valve cover assembly 3 when the double-opening flip type explosion-proof pressure relief valve 100 is normally used.

In another possible embodiment, a magnetic attraction member is provided on the valve cover. It should be understood that the magnetic attraction member includes, but is not limited to, a magnetic attraction structure made of a magnetic material such as a magnet or iron, copper, etc. The magnetic attraction piece can be fixedly arranged on the upper surface or the lower surface of the valve cover or accommodated in the middle of the valve cover in a manner of not limited by riveting, gluing, welding and the like, and a specific fixed mounting manner can be set according to actual conditions, so that excessive limitation is not carried out. It will be appreciated that the shape of the magnetic attraction member may be any of circular, square, oval, annular, elliptical, or zigzag.

It can be understood that the magnetic attraction structure is arranged on the valve cover assembly 3, so that when the double-opening flip type explosion-proof pressure release valve 100 is subjected to safety detection, the detection equipment can use the corresponding magnetic attraction structure to easily open the valve cover assembly 3, and the detection process is simpler, more convenient and more efficient.

Further, the side of the valve body 1 is formed with at least one outwardly protruding lug 18, and a mounting hole 181 is provided in the lug 18.

Specifically, the number of lugs 18 may be set according to actual product conditions. Preferably, the lugs 18 are generally at least two and oppositely arranged at two ends of the valve body 1, so as to fix the double-opening flip-type explosion-proof pressure relief valve 100 on the battery pack.

In a preferred embodiment, a pair of lugs 18 provided with mounting holes 181 are formed on the central axis of the outer side wall of the valve body 1, and the double-opening flip-type explosion-proof pressure release valve 100 is fixedly mounted on the battery pack by using fasteners (not shown) capable of being matched with the mounting holes 181, so that the double-opening flip-type explosion-proof pressure release valve 100 is prevented from falling off in the use process, and the mounting firmness is improved.

It can be appreciated that the double-open flip type explosion-proof pressure release valve 100 can be detachably fixed in the airtight cavity requiring explosion prevention and air leakage through the design, and the detachable design can also directionally replace damaged parts, so that the cost is reduced.

Referring to fig. 5, the present utility model further provides a second embodiment, which is an extension of the first embodiment based on the dual-open flip type explosion-proof pressure relief valve 100, and includes all the features of the dual-open flip type explosion-proof pressure relief valve 100 in the first embodiment.

Specifically, the valve body 1 and/or the valve cover component 3 of the double-open flip type explosion-proof pressure relief valve 100 provided in the second embodiment of the present utility model are further provided with a ventilation component 4; the ventilation assembly 4 further comprises a moisture barrier module.

It should be noted that, the ventilation assembly 4 includes, but is not limited to, a ventilation valve, a waterproof ventilation film or other waterproof ventilation members, and may be specifically selected according to practical situations, and it is not limited in this way, as long as the ventilation assembly can play a role of waterproof and ventilation, which falls within the protection scope of the present utility model.

Illustratively, in an alternative embodiment, a waterproof, breathable membrane is also provided over the vent, which can isolate liquids and not interfere with the passage of gases. When the valve cover assembly 3 is opened due to the fact that the air pressure in the battery pack is too high, air in the battery pack can be discharged out, and external liquid such as water cannot enter the battery pack, so that the pressure relief valve can play a role in exhausting and preventing water.

Particularly, in order to be provided with different product demands, when the valve body 1 is provided with a plurality of exhaust holes, a waterproof and breathable film can be arranged on one or a plurality of the exhaust holes according to actual demands, so that different customer group demands can be met, and the adaptability of the product can be improved.

Optionally, in another optional embodiment, the valve cover assembly 3 is provided with a ventilation valve, which can isolate liquid water from entering the battery pack, and simultaneously exhaust redundant gas in the battery pack, so that the pressure relief and waterproof effects of the double-opening flip type explosion-proof pressure relief valve 100 are achieved.

Further, referring to fig. 7, the ventilation assembly 4 includes a body assembly 41, and a waterproof ventilation membrane 412 disposed in the body assembly 41. The body assembly 41 includes a main body 411, the main body 411 includes a connecting portion 4111 and an abutting portion 4112, an air vent 4111 is disposed in the connecting portion 4111, an air vent 41121 is disposed in the abutting portion 4112, one end of the air vent 4111 is communicated with one end of the air vent 41121, and the waterproof air vent 412 is disposed in the air vent 41121.

It can be appreciated that the waterproof and breathable film 412 is disposed in the breathable groove 41121, so that the waterproof and breathable film 412 can be more conveniently installed and the breathable holes 41111 can be better covered.

Further, an installation step 41123 is provided in the ventilation groove 41121, and the waterproof ventilation film 412 is provided on the installation step 41123.

Specifically, in the present embodiment, the connecting portion 4111 and the abutting portion 4112 are integrally formed as a one-piece structure; the connection portion 4111 and the abutment portion 4112 are substantially cylindrical, and a cross-sectional radius of the abutment portion 4112 is larger than that of the connection portion 4111.

Further, the connection portion 4111 and the abutment portion 4112 are coaxially disposed.

Further, the body assembly 41 further includes a bottom plate 413, the bottom plate 413 closes the ventilation groove 41121, a notch 41122 is provided on a side wall of the ventilation groove 41121, and the notch 41122 is located on a side of the waterproof ventilation film 412 facing away from the through hole 1211.

It will be appreciated that if the notch 41122 is provided on the side of the waterproof and breathable membrane 412 near the vent hole, air will enter the interior of the case, and there is no way to filter water vapor through the waterproof and breathable membrane 412, so in order to ensure that gas will pass through the waterproof and breathable membrane 412, the notch 41122 needs to be provided on the side of the waterproof and breathable membrane 412 away from the vent hole

Further, a plurality of notches 41122.

Preferably, the plurality of notches 41122 are disposed along the sidewall array of the abutment 4112. It will be appreciated that this design facilitates a more uniform distribution and distribution of the gas.

Further, referring to fig. 8, a third sealing member 56 is sleeved on the connecting portion 4111.

Specifically, the third seal 76 is located at an end of the connection portion 4111 near the abutment portion 4112. After the ventilation assembly 4 is mounted, the third seal 76 is located between the abutting portion 4112 and the partition plate 121.

Further, a moisture-proof module 5 is arranged in the ventilation assembly 4, and the moisture-proof module 5 is arranged at intervals with the ventilation assembly 4 along the axial direction of the ventilation assembly 4.

It can be understood that this design can be when the valve body is installed and is used, if there is pressure differential in the valve body is inside and outside, gaseous can be through preventing wet module 5 to balanced seal box internal and external pressure differential to avoid the valve gap frequently to open, improve product life, make the product collect explosion-proof, waterproof ventilative, accuse wet multi-functional as an organic wholely, in order to have very strong market competition.

Further, referring to fig. 8 to 10, the moisture-blocking module 5 includes a fastening member 51, a telescopic first adjusting member 52 and a first moisture-blocking member 53, two ends of the first adjusting member 52 are respectively connected with the fastening member 51 and the first moisture-blocking member 53, the fastening member 51 and the first moisture-blocking member 53 can move relatively along with the telescopic first adjusting member 52, and the fastening member 51 is provided with a first air hole 511; the first moisture-proof piece 53 is provided with a second air hole 531, a second moisture-proof piece 54 is arranged in the second air hole 531 in a penetrating manner, one end of the second moisture-proof piece 54 and one end of the first moisture-proof piece 53 are provided with telescopic second control pieces 55, the second moisture-proof piece 54 can be sealed or one end of the second air hole 531 is exposed along with the expansion and the contraction of the second control pieces 55, and the control performances of the first control pieces 52 and the second control pieces 55 are different.

It can be appreciated that the moisture-resistant module 5 in this embodiment controls the positions of the first moisture-resistant member 53 and the second moisture-resistant member 54 according to the air pressure difference between the two ends of the valve body through the first control member 52 and the second control member 55, so as to flexibly control the sealing or communication condition of the moisture-resistant assembly according to the air pressure difference between the two ends of the valve body, thereby preventing or reducing the moisture from passing through the ventilation assembly 4

And the air enters sealed external equipment, so that the humidity control purpose is realized, and the problem of overhigh humidity and dew condensation in the sealed equipment can be effectively prevented.

Specifically, in the embodiment, the moisture-blocking module 5 is fixed in the air hole 41111, the fastening member 51 is disposed at an end portion of the air hole 41111 away from the end of the bottom plate 413, the first moisture-blocking member 53 is disposed corresponding to an end portion of the air hole 41111 near the end of the bottom plate 413, and the first control member 52 is a control spring with two ends respectively disposed corresponding to the fastening member 51 and the first moisture-blocking member 53; the second moisture-blocking member 54 includes a piston 541 and a connection plate 542, the piston 541 includes a guide rod 5411 and a sealing plate 5412 that are connected, the guide rod 5411 passes through the second air hole 531 on the first moisture-blocking member 53 and then is connected to the connection plate 542, the second control member 55 is a control spring whose two ends are respectively corresponding to the first moisture-blocking member 53 and the connection plate 542, and the sealing plate 5412 seals the second air hole 531 under the normal control force of the second control member 55.

It can be appreciated that, in the use process, when the internal air pressure is too high, the first moisture-blocking member 53 presses the first adjusting member 52 under the action of the air pressure, so that the internal air flow can enter the air holes 41111 through the end of the air holes 41111 near the bottom plate 413, and then be released to the outside through the first air holes 511; when the external air pressure is greater than the internal air pressure, the sealing plate 5412 compresses the second control member 55 under the action of the air pressure and moves in a direction away from the first air hole 511, thereby releasing the sealing of the second air hole 531, so that the external air pressure sequentially passes through the first air hole 511 and the second air hole 531 and then enters the interior.

Further, the first moisture barrier 53 includes a moisture barrier ring 532 and a gasket 533 which are stacked, and the gasket 533 is located on a side of the moisture barrier ring 532 facing away from the fixing member; i.e., the gasket 533 is located between the moisture blocking ring 532 and the sealing plate 5412.

Specifically, the gasket 533 is disposed coaxially with the moisture blocking ring 532.

The above inner and outer portions refer to the inner and outer portions of the apparatus to which the present combination valve is attached.

Specifically, in this embodiment, the first tuning element 52 and the second tuning element 55 are both springs, and the elasticity of the first tuning element 52 is smaller than that of the second tuning element 55, that is, compared with the first tuning element 52, the second tuning element 55 is more easily elastically deformed.

Further, please refer to fig. 10 and 11; the fixing piece 71 protrudes towards the direction close to the second moisture barrier 74 to form a first sleeve 712, and one end of the first control piece 72 is sleeved on the first sleeve 712; further, the first sleeve 7321 is sleeved on the outer side of one end of the piston 741.

Further, the moisture-blocking ring 732 protrudes in a direction approaching to the fixing member 71 to form a second sleeve 7321, and the other end of the first adjusting member 72 is sleeved on the first sleeve 712. Further, the second sleeve 7321 is sleeved outside one end of the second adjusting member 75.

It will also be appreciated by those skilled in the art that if all or part of the components of the structure of the present utility model are combined by means of fusion, physical connection, etc., the components in the dual open flip type explosion proof pressure relief valve 100 move position; or are integrally arranged; or a removable design; and the replacement of the feature quantity and the change of the feature morphology which does not perform the function, and the combined components can form equipment/devices with specific functions, and the replacement of the corresponding components of the utility model by the equipment/devices also falls within the protection scope of the utility model.

Compared with the prior art, the double-opening flip type explosion-proof pressure release valve has the following advantages:

1. the utility model relates to a double-opening flip type explosion-proof pressure relief valve, which comprises a valve body, a rotating assembly and a valve cover assembly; the valve cover assembly comprises a first valve cover and a second valve cover; the rotating assembly comprises an elastic piece; the valve body is provided with a through exhaust hole, and the valve body is rotationally connected with the valve cover assembly through the rotating assembly; the valve cover assembly is covered with the valve body under the action of the elastic piece. The vent holes are opened through the flip cover, so that the pressure relief area is larger, the obstruction is smaller when the gas is exhausted, and the pressure relief efficiency is higher; meanwhile, the cover body can prevent high-pressure gas from being discharged in a specific direction, so that damage to external parts is avoided.

2. The rotating assembly comprises a rotating shaft, the rotating shaft is inserted into a valve body, and a separating piece is arranged on the valve body. The through exhaust holes on the valve body are divided into a plurality of through the partition pieces, and the exhaust holes are matched with the valve cover assembly to guide the exhaust direction of gas during pressure relief, so that the influence of the discharge of a large amount of gas to parts close to the pressure relief valve in one direction is avoided.

3. The side wall of the valve body is provided with a connecting hole, the connecting hole is provided with a fixing piece, and the fixing piece is matched with the connecting hole to fix the rotating shaft on the valve body. The assembly position of the rotating shaft is limited through the design of the connecting hole, so that preparation is made in advance for the subsequent assembly process; simultaneously, utilize the fixed pivot of mounting fixed, play spacing effect, avoid the valve gap to rotate and lead to the pivot to shift and break away from the valve body.

4. The valve body and/or the valve cover assembly are/is also provided with a ventilation assembly. It is understood that the ventilation assembly can isolate liquid and does not influence the passage of gas, thereby realizing waterproof ventilation function.

5. The ventilation assembly of the present utility model further comprises a moisture barrier module. It can understand that wet subassembly can prevent external moisture to enter into the sealed box under normal condition in, effectively solves sealed box inside humidity too high, the dew condensation problem to see through ventilative subassembly and realize waterproof ventilative function, in order to balance the internal and external atmospheric pressure of sealed box, can avoid the valve gap frequently to open, improve product life, make the product collect explosion-proof, waterproof ventilative, accuse wet multi-functional as an organic wholely, in order to have very strong market competition.

6. According to the utility model, the first valve cover and the second valve cover are respectively provided with a connecting piece matched with the rotating shaft, an elastic gasket is arranged between two adjacent connecting pieces, and a limiting piece is arranged at the position, close to the side wall of the valve body, of the rotating shaft. By arranging the elastic washers between the connecting pieces, the fit tolerance of the valve cover during rotation is compensated, and the connecting pieces are prevented from being worn due to direct contact during rotation; and a limiting piece is arranged between the rotating shaft and the valve body to limit the movement of a valve cover assembly arranged on the rotating shaft, so that the reduction of the sealing performance of the valve cover assembly and the valve body caused by the displacement of the valve cover assembly is avoided.

7. The valve body is provided with a first sealing groove at one end close to the valve cover assembly, a first sealing groove part is arranged on the partition piece, and a first sealing piece is arranged on the first sealing groove; when the valve cover assembly is covered with the valve body, the first sealing element is matched with the valve cover assembly to seal the exhaust hole under the action of the elastic element. Through the design of the first sealing piece, the exhaust hole can be completely closed when the valve cover assembly is covered with the valve body, and gas is prevented from being discharged when the valve cover assembly is covered.

8. A second sealing groove is formed in one end, away from the valve cover assembly, of the valve body, and a second sealing piece is arranged on the second sealing groove. The air release valve is completely connected with the corresponding chamber in a sealing way through the second sealing piece, so that gas or liquid in the chamber is prevented from being continuously discharged from the connection part of the chamber and the air release valve.

9. The valve cover component is a magnetic attraction piece and/or the valve cover component is provided with the magnetic attraction piece. Through set up the magnetism and inhale the structure on the valve gap subassembly for when doing safety inspection to the air release valve, check out test set can use corresponding magnetism to inhale the structure and open the valve gap subassembly easily, and then makes the detection flow more simple and convenient, high-efficient.

10. The side surface of the valve body is provided with at least one lug protruding outwards, and the lug is provided with a mounting hole. Through the design, the air release valve is detachably fixed in the closed cavity needing explosion-proof air release, and damaged parts can be directionally replaced by the detachable design, so that the cost is reduced. The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements, etc. within the principles of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a two explosion-proof relief valves of open flip formula which characterized in that: the valve comprises a valve body, a rotating assembly and a valve cover assembly;

the valve cover assembly comprises a first valve cover and a second valve cover; the rotating assembly comprises an elastic piece; the valve body is provided with a through exhaust hole, and the valve body is rotationally connected with the valve cover assembly through the rotating assembly; the valve cover assembly is covered with the valve body under the action of the elastic piece.

2. The double-open flip type explosion-proof pressure relief valve as claimed in claim 1, wherein: the rotating assembly comprises a rotating shaft, the rotating shaft is inserted into the valve body, and a separating piece is arranged on the valve body.

3. The double-open flip type explosion-proof pressure release valve according to claim 2, wherein: the valve body is characterized in that the side wall of the valve body is provided with a connecting hole, a fixing piece is arranged on the connecting hole, and the fixing piece is matched with the connecting hole to fix the rotating shaft on the valve body.

4. The double-open flip type explosion-proof pressure relief valve as claimed in claim 1, wherein: and the valve body and/or the valve cover assembly is/are also provided with an air ventilation assembly.

5. The double-open flip type explosion-proof pressure relief valve as claimed in claim 4, wherein: the ventilation assembly further includes a moisture barrier module.

6. The double-open flip type explosion-proof pressure release valve according to claim 2, wherein: the valve is characterized in that connecting pieces matched with the rotating shaft are arranged on the first valve cover and the second valve cover, an elastic gasket is arranged between every two adjacent connecting pieces, and a limiting piece is arranged at the position, close to the side wall of the valve body, of the rotating shaft.

7. The double-open flip type explosion-proof pressure release valve according to claim 2, wherein: a first sealing groove is formed in one end, close to the valve cover assembly, of the valve body, the first sealing groove is partially formed in the partition piece, and a first sealing piece is arranged on the first sealing groove; when the valve cover assembly is covered with the valve body, the first sealing piece is matched with the valve cover assembly to seal the exhaust hole under the action of the elastic piece.

8. The double-open flip type explosion-proof pressure relief valve as claimed in claim 1, wherein: the valve body deviates from one end of the valve cover assembly and is provided with a second sealing groove, and a second sealing piece is arranged on the second sealing groove.

9. The double-open flip type explosion-proof pressure relief valve as claimed in claim 1, wherein: the valve cover component is a magnetic attraction piece and/or the valve cover component is provided with the magnetic attraction piece.

10. The double-open flip type explosion-proof pressure relief valve as claimed in claim 1, wherein: the side face of the valve body is provided with at least one lug protruding outwards, and the lug is provided with a mounting hole.