CN212004432U - Explosion-proof relief valve of metalwork - Google Patents
Explosion-proof relief valve of metalwork Download PDFInfo
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- CN212004432U CN212004432U CN202020444678.XU CN202020444678U CN212004432U CN 212004432 U CN212004432 U CN 212004432U CN 202020444678 U CN202020444678 U CN 202020444678U CN 212004432 U CN212004432 U CN 212004432U
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Abstract
The utility model relates to a metal piece explosion-proof relief valve, which comprises a valve body, wherein a first through hole and a plurality of second through holes are arranged on the valve body, a connecting shaft is arranged in the first through hole, an upper cover body with the bottom connected with the connecting shaft is arranged in the top of the valve body, a fourth through hole communicated with a third through hole of the connecting shaft is arranged at the bottom of a first ring groove of the upper cover body, a breathable film is arranged in a first ring groove, a pressing ring is arranged at the top of the breathable film, a pressing sheet is arranged at the top of the pressing ring, a notch corresponding to a groove of the upper cover body is arranged on the pressing sheet, an upper cover is fixedly connected with the pressing sheet and the top of the upper cover body, a gap is arranged between the outer wall of the upper cover and the outer wall of the upper cover body and the inner wall of the valve body, a built-in metal elastic balance explosion-proof structure is adopted, the structure is, the explosion-proof pressure release is applicable to the quick explosion-proof pressure release of new forms of energy battery package and is used continuously, protects the group battery.
Description
Technical Field
The utility model relates to an explosion-proof relief valve of metalwork belongs to the explosion-proof pressure release technical field of new forms of energy battery package.
Background
The power battery is used as a core component of the new energy automobile, the whole automobile performance and the running safety of the electric automobile are directly influenced by the safety of the power battery, an internal battery cell of the power battery can generate heat when the power battery operates under different working conditions, so that the internal gas of a power battery box expands, the internal and external pressures are unbalanced, the battery cell fails under the limit condition, a large amount of gas can be generated, if the gas cannot be discharged in time, the gas is collected inside the power battery, the risks such as explosion and the like are easily generated, and therefore the internal and external pressures are balanced by a pressure relief structure suitable for a new energy.
The pressure release structure of new forms of energy battery package among the prior art generally adopts and sets up the ventilated membrane in the valve body, and when the pressure differential is less, through the ventilated membrane ventilation regulation equilibrium pressure, when battery package internal pressure is great, the inside puncture structure of valve punctures the ventilated membrane to reach the effect of quick pressure release, nevertheless inside and external direct intercommunication of battery package after the pressure release can lead to outside air entering battery package inside, thereby influence the battery quality, make the battery life-span descend, influence the safety of battery package.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art's defect, provide an explosion-proof relief valve of metalwork, adopt the balanced blast resistant construction of built-in metal elastic type, compact structure, convenient assembling, gas tightness are good, and the ventilated membrane is waterproof ventilative under the little pressure differential, and compression spring quick pressure release is applicable to the quick explosion-proof pressure release of new forms of energy battery package and lasts the use under the big pressure differential.
The utility model discloses a realize through following technical scheme:
a metal piece explosion-proof pressure relief valve comprises a valve body, wherein a first through hole and a plurality of second through holes positioned outside the first through hole are formed in the valve body, a connecting shaft in clearance fit with the first through hole is arranged in the first through hole, a spring sleeved outside the connecting shaft is arranged between the connecting shaft and the bottom of the valve body, a third through hole is formed in the connecting shaft, and an upper cover body with the bottom connected with the connecting shaft is arranged in the top of the valve body;
the bottom of the valve body is provided with a plurality of connecting holes and a first sealing groove positioned outside the connecting holes, an outer sealing ring is arranged in the first sealing groove, a second sealing groove positioned at the bottom of the upper cover body is arranged in the top of the valve body, and an inner sealing ring is arranged in the second sealing groove;
the top of the upper cover body is provided with a first ring groove and a plurality of grooves positioned outside the first ring groove, the bottom of the first ring groove is provided with a fourth through hole communicated with the third through hole, a breathable film is arranged in the first ring groove, the top of the breathable film is provided with a pressing ring, and the top of the pressing ring is provided with a pressing sheet;
the pressing piece is provided with a plurality of notches which are arranged around the pressing piece in a circle and correspond to the grooves, the end parts of the notches are positioned on the inner side of the pressing ring, the top of the pressing piece and the top of the upper cover body are fixedly connected with the upper cover, and gaps are arranged between the outer walls of the upper cover and the upper cover body and the inner wall of the valve body.
The utility model has the advantages that:
the utility model adopts a built-in metal elastic balance explosion-proof structure, has compact structure, reasonable design and convenient assembly, (1) the air tightness of the explosion-proof relief valve is ensured by adopting the inner sealing ring and the outer sealing ring; (2) under the state of small pressure difference, the pressing force of the spring presses the upper cover body on the valve body under the connecting action of the connecting shaft, gas passes through the third through hole and the fourth through hole of the connecting shaft, the waterproof breathable film can realize waterproof and breathable performance and is communicated with the outside through the notch, the groove and the gap; (3) under the condition of large pressure difference, atmospheric pressure drives connecting axle and upper cover body along first through-hole jack-up that makes progress, and compression spring is by a plurality of second through-holes and external intercommunication, can realize quick pressure release to protect the group battery of new energy battery package, pressure recovery is to normal value back simultaneously, and the spring reply can resume balanced state and last the pressure release and use, is applicable to the quick explosion-proof pressure release of new energy battery package.
Drawings
Fig. 1 is a bottom view of the present invention.
Fig. 2 is a cross-sectional view in the direction AA of fig. 1.
Fig. 3 is a perspective view of the valve body of the present invention.
Fig. 4 is a perspective view of the upper cover body of the present invention.
Fig. 5 is a perspective view of the tablet of the present invention.
Fig. 6 is a structure view of the pressure releasing state of the present invention.
The labels in the figure are: the valve comprises a valve body 1, a first through hole 2, a second through hole 3, a connecting shaft 4, a spring 5, a second annular groove 6, a flange 7, a third through hole 8, an upper cover body 9, a connecting hole 10, a first sealing groove 11, an outer sealing ring 12, a second sealing groove 13, an inner sealing ring 14, a first annular groove 15, a groove 16, a fourth through hole 17, a breathable film 18, a pressing ring 19, a pressing sheet 20, a notch 21, an upper cover 22, a gap 23, a third annular groove 24, a convex ring 25 and an inner hexagonal hole 26.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
A metal part explosion-proof pressure relief valve comprises a valve body 1, wherein a first through hole 2 and a plurality of second through holes 3 positioned outside the first through hole 2 are formed in the valve body 1, a connecting shaft 4 in clearance fit with the first through hole 2 is arranged in the first through hole 2, and a spring 5 sleeved outside the connecting shaft 4 is arranged between the connecting shaft 4 and the bottom of the valve body 1;
the bottom of the valve body 1 is provided with a second annular groove 6, a flange 7 is arranged outside the connecting shaft 4, the spring 5 is positioned between the second annular groove 6 and the flange 7, a third through hole 8 is arranged in the connecting shaft 4, an upper cover body 9 with the bottom connected with the connecting shaft 4 is arranged in the top of the valve body 1, the bottom of the upper cover body 9 is arranged in the third through hole 8, the outer wall of the upper cover body is in threaded fit with the inner wall of the third through hole 8, and a coaxial inner hexagonal hole 26 is arranged at the bottom of the third through hole 8;
the bottom of the valve body 1 is provided with a plurality of connecting holes 10 and a first sealing groove 11 positioned outside the connecting holes 10, an outer sealing ring 12 is arranged in the first sealing groove 11, the second through holes 3 are of a fan-shaped structure, the connecting holes 10 are positioned between the adjacent second through holes 3, a second sealing groove 13 positioned at the bottom of the upper cover body 9 is arranged in the top of the valve body 1, and an inner sealing ring 14 is arranged in the second sealing groove 13;
the top of the upper cover body 9 is provided with a first ring groove 15 and a plurality of grooves 16 positioned outside the first ring groove 15, the bottom of the first ring groove 15 is provided with a fourth through hole 17 communicated with the third through hole 8, a breathable film 18 is arranged in the first ring groove 15, the top of the breathable film 18 is provided with a pressing ring 19, and the top of the pressing ring 19 is provided with a pressing sheet 20;
the pressing sheet 20 is provided with a plurality of notches 21 which are arranged around the pressing sheet 20 and correspond to the grooves 16, the end parts of the notches 21 are positioned at the inner side of the pressing ring 19, the inner wall of each notch 21 is of an arc-shaped structure, the pressing sheet 20 and the top of the upper cover body 9 are fixedly connected with an upper cover 22, and a gap 23 is formed between the outer wall of each upper cover 22 and the outer wall of the upper cover body 9 and the inner wall of the valve body 1;
be equipped with third annular 24 in the 1 top of valve body, 9 bottoms of upper cover body are equipped with the bulge loop 25 with 24 shape fit of third annular, third annular 24 and bulge loop 25 all are round platform shape structure.
The utility model discloses a theory of operation does:
the bottom of the valve body 1 is fixed on a new energy battery pack through the connecting hole 10, and the outer sealing ring 12 in the first sealing groove 11 plays a role in sealing between the valve body 1 and the new energy battery pack;
the spring 5 is limited between the valve body 1 and the connecting shaft 4 by adopting a second annular groove 6 of the valve body 1 and a flange 7 connected with the outside, the structure is compact, the longitudinal structure of the pressure release valve is reduced, sufficient pre-pressure and restoring force are ensured under the overhanging length of the spring 5, and the rapid releasing, closing and stable action of the pressure release valve are ensured;
the upper cover body 9 in the top of the valve body 1 is connected with the inner wall of the third through hole 8 in a threaded fit mode through the bottom, a wrench is inserted into the hexagonal socket 26 to help screwing, the communication between the third through hole 8 and the fourth through hole 17 is realized, the connection and the manufacture are convenient, the structure is compact, the breathable film 18 is placed in the first ring groove 15 and is pressed and supported by the pressing ring 19, the breathable film 18 is adhered and connected with the upper cover body 9 by adopting an ePTFE waterproof breathable material, the pressing sheet 20 is arranged by adopting a plurality of notches 21 of arc-shaped inner walls to correspond to the grooves 16 of the upper cover body 9, the end part of each notch 21 is positioned on one side of the pressing ring 19, the upper cover 22 is fixed with the pressing sheet 20 and the upper cover body 9 through adhesion, the deviation is prevented, and is closed with;
the third circular groove 24 in the shape of a circular truncated cone is matched with the convex ring 25 between the valve body 1 and the upper cover body 9, so that the compact structure is facilitated, the size of the pressure release valve is reduced, the structural strength of the valve body 1 and the upper cover body 9 is ensured, meanwhile, the sealing property between the upper cover body 9 and the valve body 1 is improved through the inner sealing ring 14 in the second sealing groove 13 at the bottom of the upper cover body 9, and the stable flow of air flow from the air permeable film 18 in a balanced state is ensured;
referring to the attached drawing 2, when the gas pressure in the new energy battery pack is below a critical value, the pressure release valve is in a static equilibrium state, the upper cover body 9 is pressed on the valve body 1 under the connecting action of the connecting shaft 4 by the pressing force of the spring 5, the gas of the new energy battery pack enters the fourth through hole 17 communicated with the upper cover body 9 through the third through hole 8 of the connecting shaft 4, enters the space between the notch 21 and the upper cover 22 from the space between the pressing ring 19 and the notch 21 of the pressing sheet 20 through the gas permeable membrane 18 for water and gas permeation, and flows to the outside from the gap 23 between the upper cover body 9 and the upper cover 22 and the inner wall of the valve body 1 through the channel between the groove 16 corresponding to the notch 21 and the upper cover 22, so as to;
referring to fig. 6, when the gas pressure in the new energy battery pack greatly breaks through a critical value, the gas pressure is greater than the pressure of the spring 5, the gas pressure drives the connecting shaft 4 to jack upwards along the first through hole 2, the spring 5 is compressed, the upper cover body 9 connected with the connecting shaft 4 jacks synchronously, the second through holes 3 are communicated with the outside through the upper cover body 9 and the valve body 1 to realize rapid pressure relief, after the internal and external pressure difference is balanced, the spring 5 gradually recovers to the original position, and the connecting shaft 4 drives the upper cover body 9 to descend along the first through hole 2 and recover to the balanced state of fig. 2 again;
to sum up, this kind of balanced explosion-proof construction of built-in metal bullet dynamic formula, compact structure, reasonable in design, convenient assembling, adopt inner seal ring 14 and outer seal ring 12 to guarantee the gas tightness of explosion-proof relief valve, under the little pressure differential state, waterproof ventilative can be realized to waterproof ventilated membrane 18 on the upper cover body 9, under the condition of big pressure differential, can realize quick pressure release to the group battery of protection new energy battery package, pressure recovery is after the normal value simultaneously, can resume and last the use, be applicable to the explosion-proof pressure release of new energy battery package.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A metal piece explosion-proof relief valve comprises a valve body and is characterized in that a first through hole and a plurality of second through holes positioned outside the first through hole are formed in the valve body, a connecting shaft in clearance fit with the first through hole is arranged in the first through hole, a spring sleeved outside the connecting shaft is arranged between the connecting shaft and the bottom of the valve body, a third through hole is formed in the connecting shaft, and an upper cover body with the bottom connected with the connecting shaft is arranged in the top of the valve body;
the upper cover body top is equipped with first annular and a plurality of recess that are located first annular outside, first ring tank bottom is equipped with the fourth through-hole that communicates with the third through-hole, be equipped with the ventilated membrane in the first annular, the ventilated membrane top is equipped with the clamping ring, the clamping ring top is equipped with the preforming, be equipped with a plurality of notches that correspond the setting around preforming a week and with the recess on the preforming, the notch tip is located the clamping ring inboard, preforming and upper cover body top fixedly connected with upper cover, be equipped with the clearance between upper cover and upper cover body outer wall and the valve body inner wall.
2. The metal piece explosion-proof pressure relief valve according to claim 1, wherein the bottom of the valve body is provided with a plurality of connecting holes and a first sealing groove located outside the connecting holes, and an outer sealing ring is arranged in the first sealing groove.
3. The metal piece explosion-proof pressure relief valve according to claim 2, wherein the second through holes are of a fan-shaped structure, and the connecting holes are located between the adjacent second through holes.
4. The metal piece explosion-proof pressure relief valve according to claim 1, wherein a second ring groove is formed in the bottom of the valve body, a flange is arranged outside the connecting shaft, and the spring is located between the second ring groove and the flange.
5. The metal piece explosion-proof pressure relief valve according to claim 1, wherein the bottom of the upper cover body is arranged in the third through hole, the outer wall of the upper cover body is in threaded fit with the inner wall of the third through hole, and a coaxial inner hexagonal hole is formed in the bottom of the third through hole.
6. The metal piece explosion-proof pressure relief valve according to claim 1, wherein the inner wall of the notch is of an arc-shaped structure.
7. The metal piece explosion-proof pressure relief valve according to claim 1, wherein a second sealing groove is formed in the top of the valve body and located at the bottom of the upper cover body, and an inner sealing ring is arranged in the second sealing groove.
8. The metal part explosion-proof pressure relief valve according to any one of claims 1 to 7, wherein a third ring groove is formed in the top of the valve body, and a convex ring matched with the third ring groove in shape is formed in the bottom of the upper cover body.
9. The metal piece explosion-proof pressure relief valve according to claim 8, wherein the third ring groove and the bulge ring are both of a truncated cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020444678.XU CN212004432U (en) | 2020-03-31 | 2020-03-31 | Explosion-proof relief valve of metalwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020444678.XU CN212004432U (en) | 2020-03-31 | 2020-03-31 | Explosion-proof relief valve of metalwork |
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| Publication Number | Publication Date |
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| CN212004432U true CN212004432U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020444678.XU Active CN212004432U (en) | 2020-03-31 | 2020-03-31 | Explosion-proof relief valve of metalwork |
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| CN (1) | CN212004432U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610738A (en) * | 2020-12-30 | 2021-04-06 | 蜂巢能源科技有限公司 | Explosion-proof valve |
| CN113251184A (en) * | 2021-05-12 | 2021-08-13 | 广东电网有限责任公司 | Protective device |
| CN113775799A (en) * | 2021-09-15 | 2021-12-10 | 广东尚达能源科技有限公司 | Pressure relief explosion-proof valve for realizing pressure relief and preventing external air from flowing back based on labyrinth channel |
| CN114566751A (en) * | 2021-12-09 | 2022-05-31 | 西安交通大学 | Pressure relief device for safety valve of lithium battery |
-
2020
- 2020-03-31 CN CN202020444678.XU patent/CN212004432U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610738A (en) * | 2020-12-30 | 2021-04-06 | 蜂巢能源科技有限公司 | Explosion-proof valve |
| CN113251184A (en) * | 2021-05-12 | 2021-08-13 | 广东电网有限责任公司 | Protective device |
| CN113775799A (en) * | 2021-09-15 | 2021-12-10 | 广东尚达能源科技有限公司 | Pressure relief explosion-proof valve for realizing pressure relief and preventing external air from flowing back based on labyrinth channel |
| CN113775799B (en) * | 2021-09-15 | 2023-11-24 | 广东尚达能源科技有限公司 | Decompression explosion-proof valve for realizing decompression and preventing external air backflow based on labyrinth channel |
| CN114566751A (en) * | 2021-12-09 | 2022-05-31 | 西安交通大学 | Pressure relief device for safety valve of lithium battery |
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