CN209876074U - Explosion-proof ventilation valve - Google Patents

Abstract

The utility model discloses an explosion-proof breather valve, which comprises a valve body, embedded nut, the ventilated membrane, screening glass and back visor, mounting groove and installing port have been seted up to the valve body, mounting groove and installing port intercommunication, the one side of valve body installing port dorsad is located to back visor, and back visor and valve body connection, be provided with explosion-proof pointed cone on the valve body, and the valve body has a membrane paper installation face in the one side of visor dorsad, the ventilated membrane sets up on membrane paper installation face, screening glass staggers the installing port and is connected with the valve body, and the screening glass sets up in the one side of ventilated membrane visor dorsad, embedded nut sets up in the mounting groove and is connected with the lateral wall of mounting groove, embedded nut has the.

Description

Explosion-proof ventilation valve

Technical Field

The utility model relates to an explosion-proof ventilation valve especially relates to an explosion-proof ventilation valve of battery.

Background

New energy batteries can be divided into two main categories, storage batteries and fuel cells. The storage battery may be classified into a lead-acid storage battery, a nickel-based battery, a secondary lithium battery, an air battery, and the like. The fuel cell can be divided into alkaline fuel cell, phosphoric acid fuel cell, molten carbonate fuel cell, solid oxide fuel cell, proton exchange membrane fuel cell, direct methanol fuel cell, etc., the new energy battery can produce a large amount of heat when using, lead to the atmospheric pressure to rise sharply, can lead to the explosion under the serious condition, in order to prevent the explosion of the new energy battery, usually adopt the explosion-proof air valve to match the practicality with it, the battery explosion-proof air valve among the prior art is too big, and usually adopt the mode that the valve body surface sets up the screw thread and install with the mode of battery case threaded connection, there is the possibility that the connection of explosion-proof air valve and battery case is not hard up, can not guarantee its security well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide an explosion-proof ventilation valve.

The scheme of the utility model is realized like this:

the utility model provides an explosion-proof breather valve, includes valve body, embedded nut, ventilated membrane, screening glass and back visor, mounting groove and installing port have been seted up to the valve body, the mounting groove with the installing port intercommunication, back visor lid is located the valve body dorsad the one side of installing port, just back visor with the valve body is connected, be provided with explosion-proof pointed cone on the valve body, just the valve body dorsad a membrane paper installation face has in the one side of back visor, the ventilated membrane set up in on the membrane paper installation face, the screening glass staggers the installing port with the valve body is connected, just the screening glass set up in the ventilated membrane dorsad the one side of back visor, embedded nut set up in the mounting groove and with the lateral wall of mounting groove is connected, embedded nut has the internal thread hole.

Further, the valve body is including design ring and base, the base with the design ring connect just the base set up in the inboard of design ring, mounting groove and installing port have been seted up on the base, mounting groove on the base and the installing port intercommunication on the base, embedded nut sets up in the mounting groove on the base, embedded nut is connected with the lateral wall of the mounting groove on the base, embedded nut is provided with the internal thread hole, just the external intercommunication of installing port on the internal thread hole through the base and the mounting groove on the base, back visor lid is located on the base.

Further, the number of the mounting grooves is four, and the number of the embedded nuts is four.

Furthermore, a clamping block is arranged on the rear protective cover, and the rear protective cover is clamped with the base through the clamping block.

Further, the base dorsad be provided with the erection column on the one side of back visor, seted up spacing hole on the protection piece, the erection column wears to locate spacing downthehole, the screening glass passes through spacing pot head is located on the erection column.

Furthermore, the number of the mounting columns is four, four limiting holes are formed in the protective sheet, and one mounting column penetrates through one limiting hole.

Further, the mounting posts are in hot-melt connection with the protection sheet.

Furthermore, the protective sheet is provided with a plurality of air holes.

Further, still include the sealing washer, the base dorsad the seal groove has been seted up on the one side of back visor, the sealing washer sets up in the seal groove.

The utility model has the advantages that:

through the setting in internal thread hole for on explosion-proof breather valve can conveniently install battery case, the installation is swift, firm. When the battery generates a large amount of heat and the pressure in the battery case is increased, the air pressure is discharged to the explosion-proof vent valve, the air pressure firstly passes through the protection plate and then applies pressure to the vent membrane, and the vent membrane is discharged, so that the pressure relief type explosion prevention is realized. When the air pressure is too high, the air permeable membrane is pressed to the inner side of the valve body by the air pressure and is punctured by an explosion-proof pointed cone arranged on the valve body, so that the explosion-proof valve can exchange a large amount of external air, rapidly discharge the pressure and avoid explosion hazards.

Drawings

The present invention will be further explained with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural view of an explosion-proof vent valve according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of an explosion-proof vent valve according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a valve body according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the rear protective cover according to an embodiment of the present invention.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The following will combine the drawings of the embodiments of the present invention to further describe the technical solution of the present invention, and the present invention is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but does not indicate or imply that the equipment or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the patent, and those skilled in the art can understand the specific meaning of the above terms according to specific situations.

The utility model provides an explosion-proof ventilation valve, specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, it is an embodiment's explosion-proof ventilation valve, including valve body 100, embedded nut 200, ventilated membrane 300, protection sheet 400 and back visor 500, valve body 100 has been seted up mounting groove 122 and installing port 121, mounting groove 122 with installing port 121 communicates, mounting groove 122 is used for setting up embedded nut 200, makes embedded nut 200 bury underground in valve body 100, specifically, embedded nut 200 sets up in mounting groove 122 and is connected with the lateral wall of mounting groove 122, for example, embedded nut 200 with the lateral wall hot melt of mounting groove 122 is connected, that is to say, this embedded nut 200 sets up in mounting groove 122 through the hot melt is buried, embedded nut 200 has internal thread hole 201, through the setting of this internal thread hole 201, the explosion-proof ventilation valve can be mounted on the battery shell through threads, and quick and stable mounting is achieved.

Further, back visor 500 lid is located valve body 100 dorsad the one side of installing port 121, just back visor 500 with valve body 100 connects, be provided with explosion-proof awl 127 on valve body 100, just valve body 100 dorsad a membrane paper installation face 124 has in the one side of back visor 500, ventilated membrane 300 set up in on membrane paper installation face 124, protection sheet 400 staggers installing port 121 with valve body 100 is connected, just protection sheet 400 set up in ventilated membrane 300 dorsad the one side of back visor 500, specifically, valve body 100 is including stereotyped ring 110 and base 120, base 120 with stereotype ring 110 connect just base 120 set up in the inboard of stereotyped ring 110, mounting groove 122 and installing port 121 have been seted up on base 120, mounting groove 122 on the base 120 and installing port 121 on the base 120 communicate, the insert nut 200 is disposed in the mounting groove 122 of the base 120, the insert nut 200 is connected to the side wall of the mounting groove 122 of the base 120, the insert nut 200 is provided with an internal threaded hole 201 for connecting with a battery case, the internal threaded hole 201 is communicated with the outside of the mounting groove 122 of the base 120 through the mounting opening 121 of the base 120, so that the explosion-proof vent valve can be screwed with the battery case through the internal threaded hole 201, the rear protective cover 500 is covered on the base 120, for example, as shown in fig. 4, the rear protective cover 500 is provided with a fixture block 510, the rear protective cover 500 is clamped with the base 120 through the fixture block 510, the base 120 is provided with the explosion-proof pointed cone 127, one surface of the base 120 facing away from the rear protective cover 500 is provided with a membrane paper mounting surface 124, and the air permeable membrane 300 is disposed on the membrane paper mounting surface 124, for example, the gas permeable membrane 300 is welded to the membrane paper mounting surface 124, for example, an annular groove is formed in the base 120, the bottom of the annular groove is the membrane paper mounting surface 124, and the gas permeable membrane 300 is disposed in the annular groove and welded to the membrane paper mounting surface 124, wherein, for example, in order to achieve the explosion-proof and gas-permeable function of the gas permeable membrane 300, the gas permeable membrane 300 is made of a material with good dust-proof, water-proof and gas-permeable properties, and when the battery generates a large amount of heat and the pressure in the battery case increases, the gas pressure is discharged to the valve body 100 and is discharged through the gas permeable membrane 300 disposed on the. The air permeable membrane 300 is connected with the base 120 by staggering the mounting opening 121. The protection sheet 400 is used for protecting the breathable film 300, so as to avoid the problem that the breathable film 300 is easily broken due to high pressure, and therefore, the protection sheet 400 should be disposed at the outer side of the breathable film 300, specifically, the protection sheet 400 is staggered with the mounting port 121 connected to the base 120, and the protection sheet 400 is disposed at the side of the breathable film 300 facing away from the rear protective cover 500, that is, the protection sheet 400 is staggered with the mounting port 121, and the protection sheet 400 is disposed on the mounting port 121 to prevent the embedded nut 200 from being connected to the battery case through the internal threaded hole 201, for example, the communication hole 401 is disposed on the protection sheet 400, the protection sheet 400 is staggered with the mounting port 121 connected to the base 120 through the communication hole 401, and the protection sheet 400 is disposed at the side of the breathable film 300 facing away from the rear protective cover 500, that is, the protection sheet 400 is disposed at, so that the pressure passes through the protective sheet 400 and then applies pressure to the breathable film 300 to achieve the protective effect. Further, the protective sheet 400 is provided with a plurality of ventilation holes 403 for ventilation, so that pressure can pass through the ventilation film 300 to realize ventilation.

For example, in order to realize the explosion-proof and ventilation function of the breathable film 300, the breathable film 300 is made of expanded polytetrafluoroethylene with good dust-proof, water-proof and ventilation properties, and the expanded polytetrafluoroethylene is rich in elasticity and flexibility, so that the breathable film 300 made of the breathable film is not easy to break due to high pressure, and meanwhile, the breathable film has the characteristics of lightness, thinness, water resistance, dust resistance and the like, so that the breathable film can isolate external dust, water gas and other impurities, and the impurities are prevented from entering the battery case.

Further, in order to more firmly realize the connection between the explosion-proof vent valve and the battery shell, the number of the mounting grooves 122 is four, the number of the embedded nuts 200 is four, the connection relationship between the explosion-proof vent valve and the battery shell, which is stable and not easy to loosen, is realized through the positioning and mounting of the four embedded nuts 200, and the assembly is simple and rapid. It should be understood that the number of the insert nuts 200 and the mounting grooves 122 is not limited to the above-mentioned embodiments, and may be set according to practical situations, and other embodiments are not described herein.

In order to fix the position of the protective sheet 400, the protective sheet 400 should be disposed on the base 120, for example, as shown in fig. 1 and 3, a mounting post 125 is provided on a side of the base 120 facing away from the rear protective cover 500, that is, the base 120 is provided with a mounting post 125 on one side thereof provided with the mounting opening 121, the protective sheet 400 is provided with a limiting hole 402, the mounting post 125 is inserted into the limiting hole 402, and the protection sheet 400 is sleeved on the mounting post 125 through the limiting hole 402, that is, the protection sheet 400 is sleeved on the base 120 through the limiting hole 402, and further, for example, the protection sheet 400 is sleeved on the base 120 through the limiting hole 402, the mounting posts 125 are hot-melting posts, and the protection sheet 400 is connected with the base 120 through the hot-melting posts in a hot-melting manner, so that the protection sheet 400 is stably mounted on the base 120. Further, the number of the mounting posts 125 is four, four limiting holes 402 are formed in the protective sheet 400, and one of the mounting posts 125 penetrates through one of the limiting holes 402. It should be understood that the number of the mounting posts 125 and the limiting holes 402 is not limited to the above-mentioned embodiments, and may be set according to practical situations, and other embodiments are not described herein.

In order to realize the sealing of the anti-explosion vent valve, in one embodiment, as shown in fig. 1, fig. 2 and fig. 3, the anti-explosion vent valve further includes a sealing ring 600, the sealing ring 600 is used for sealing a gap between the battery case and the valve body 100, and is generally disposed on the abutting surface of the battery case and the valve body 100 to seal the gap therebetween, in the utility model, a sealing groove 123 is disposed on a surface of the base 120 facing away from the rear protective cover 500, and the sealing ring 600 is disposed in the sealing groove 123. Make between valve body 100 and the battery case realize good sealed through this sealing washer 600, effectively the impurity such as the external dust of separation gets into in the battery case, reaches dustproof and waterproof performance requirement. In a preferred embodiment, the sealing ring is an H-shaped sealing ring, the section of the H-shaped sealing ring is H-shaped, and the H-shaped sealing ring is provided with two rings, so that double sealing can be performed on the H-shaped sealing ring, the sealing performance is better, the friction force of the H-shaped sealing ring is smaller than that of the O-shaped sealing ring, the abrasion degree of the H-shaped sealing ring is reduced, and the service life is prolonged.

In order to realize explosion-proof ventilation, in an embodiment, the base 120 is provided with an exhaust channel 126, the rear protective cover 500 is provided with a plurality of exhaust holes 520, and the exhaust channel 126 is communicated with the exhaust holes 520.

The utility model discloses an explosion-proof ventilation valve's theory of operation does: install explosion-proof ventilation valve to battery case on and realize double-seal through H type sealing washer, wherein through the setting in internal thread hole for on explosion-proof ventilation valve can conveniently install battery case, the installation is swift, firm. Wherein the base is communicated with the exhaust hole through an exhaust passage, and the gas exchange between the battery shell and the outside is realized through the breathable film, and the external impurities such as dust are isolated. When the battery generates a large amount of heat and the pressure in the battery case is increased, the air pressure is discharged to the explosion-proof vent valve, the air pressure firstly passes through the protection plate and then applies pressure to the vent film, and the air pressure is discharged through the vent film and is discharged to the outside from the air exhaust channel to the air exhaust hole, so that the pressure-relief type explosion-proof effect is realized. When the air pressure is too high, the air permeable membrane is pressed to the inner side of the valve body by the air pressure and is punctured by an explosion-proof pointed cone arranged on the valve body, so that the explosion-proof valve can exchange a large amount of external air, rapidly discharge the pressure and avoid explosion hazards.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. The utility model provides an explosion-proof breather valve, its characterized in that, includes valve body, embedded nut, ventilated membrane, screening glass and back visor, mounting groove and installing port have been seted up to the valve body, the mounting groove with the installing port intercommunication, back visor lid is located the valve body dorsad the one side of installing port, just back visor with the valve body is connected, be provided with explosion-proof pointed cone on the valve body, just the valve body dorsad a membrane paper installation face has in the one side of back visor, the ventilated membrane set up in on the membrane paper installation face, the screening glass staggers the installing port with the valve body is connected, just the screening glass set up in the ventilated membrane dorsad the one side of back visor, embedded nut set up in the mounting groove and with the lateral wall of mounting groove is connected, embedded nut has the internal thread hole.

2. The explosion-proof breather valve of claim 1, wherein the valve body comprises a sizing ring and a base, the base is connected with the sizing ring, the base is disposed on the inner side of the sizing ring, a mounting groove and a mounting opening are formed in the base, the mounting groove in the base is communicated with the mounting opening in the base, the embedded nut is disposed in the mounting groove in the base, the embedded nut is connected with the side wall of the mounting groove in the base, the embedded nut is provided with an internal thread hole, the internal thread hole is communicated with the outside of the mounting groove in the base through the mounting opening in the base, and the rear protective cover is covered on the base.

3. The explosion-proof vent valve of claim 1, wherein the number of the mounting grooves is four, and the number of the insert nuts is four.

4. The explosion-proof ventilation valve of claim 2, wherein a fixture block is arranged on the rear protective cover, and the rear protective cover is clamped with the base through the fixture block.

5. The explosion-proof breather valve according to claim 2, wherein a mounting post is disposed on a surface of the base facing away from the rear protective cover, a limiting hole is disposed on the protective sheet, the mounting post is disposed in the limiting hole, and the protective sheet is disposed on the mounting post through the limiting hole.

6. The explosion-proof breather valve of claim 5, wherein the number of the mounting posts is four, the protective sheet is provided with four limiting holes, and one mounting post is inserted into one limiting hole.

7. The explosion proof vent valve of claim 6, wherein the mounting posts are heat staked to the protective sheet.

8. The explosion-proof breather valve of claim 5, wherein the protective sheet is provided with a plurality of breather holes.

9. The explosion-proof breather valve of claim 2, further comprising a sealing ring, wherein a sealing groove is formed in a surface of the base facing away from the rear protective cover, and the sealing ring is disposed in the sealing groove.