CN215568239U - Wet explosion-proof breather valve of check formula metal spring accuse - Google Patents
Wet explosion-proof breather valve of check formula metal spring accuse Download PDFInfo
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- CN215568239U CN215568239U CN202121348534.5U CN202121348534U CN215568239U CN 215568239 U CN215568239 U CN 215568239U CN 202121348534 U CN202121348534 U CN 202121348534U CN 215568239 U CN215568239 U CN 215568239U
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- check valve
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Abstract
The utility model discloses a check type metal spring humidity control explosion-proof vent valve, belongs to the technical field of battery safety auxiliary equipment, solves the problem of low exhaust efficiency of the existing vent valve, and has the technical key points that: the battery protection device comprises a protection sleeve, wherein the protection sleeve is arranged in a battery, the protection sleeve is connected with a check valve device, the check valve device is used for discharging high-temperature and high-pressure gas in the battery to the outside, the battery protection device further comprises a guide mechanism, the guide mechanism comprises a second guide shaft and a first pressing ring, the second guide shaft is connected with the first pressing ring in an interference fit mode, and the guide mechanism is used for increasing a limiting structure; the first sealing assembly is connected with the guide mechanism and used for sealing the guide mechanism; and the fixing component is connected with the first sealing component, a check valve device is arranged in the fixing component, and the fixing component can fix the opening sectional area after being opened, so that the rapid continuous pressure relief is ensured, and the exhaust efficiency is high.
Description
Technical Field
The utility model relates to the technical field of battery safety auxiliary equipment, in particular to a non-return type metal spring humidity control explosion-proof vent valve.
Background
The power battery is a power source for providing power source for the tool, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts. It is mainly distinguished from a starting battery for starting an automobile engine. Valve-port sealed lead-acid batteries, open tubular lead-acid batteries and lithium iron phosphate batteries are mostly used.
The battery pack system in the field of new energy vehicles is moving along a lightweight route, the compression resistance of the battery pack is greatly weakened due to the fact that the battery pack is lighter and thinner, a lower explosion-proof device is needed to meet the safety of the battery pack in a thermal runaway state, and the traditional plastic-rubber welding type explosion-proof valve and the traditional thimble piercing type explosion-proof valve are difficult to meet the market demand of low-pressure explosion.
At present, the new energy battery pack industry begins to use the metal spring type explosion-proof valve gradually, and the metal spring type explosion-proof valve has the advantages that the low-pressure opening can be met, a long reaction time can be strived for drivers and passengers when the thermal runaway occurs, but the metal spring type explosion-proof valve on the market is mostly released after the opening so as to recover, and high-temperature gas in a box body cannot be discharged in time.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the embodiment of the utility model aims to provide a check type metal spring humidity control explosion-proof vent valve to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a wet explosion-proof breather valve of check formula metal spring accuse, includes the protective sheath, the protective sheath sets up in the battery, the check valve device is connected to the protective sheath, the check valve device is used for discharging high temperature high-pressure gas in the battery to the external world, still includes:
the guide mechanism comprises a second guide shaft and a first pressing ring, the second guide shaft is connected with the first pressing ring in an interference fit mode, and the guide mechanism is used for increasing a limiting structure;
the first sealing assembly is connected with the guide mechanism and is used for sealing the guide mechanism; and
the fixed assembly is connected with the first sealing assembly, a check valve device is arranged in the fixed assembly, and the opened sectional area can be fixed after the fixed assembly is opened, so that rapid and continuous pressure relief is guaranteed.
As a further aspect of the present invention, the guide mechanism further includes:
the steel ball is movably connected with the second guide shaft through a spring and used for moving and controlling dust and impurities released by the battery cell to be directly discharged from the opened check valve; and
and the second spring is connected with the second guide shaft and is arranged in the second guide shaft.
As a further aspect of the present invention, the first seal assembly includes:
the first fixed seat is used for installing a first sealing assembly;
the inner O-shaped ring is movably connected with the first fixed seat, is used for sealing the first guide shaft and is arranged in the first guide shaft; and
the first spring is movably connected with the first guide shaft and the second guide shaft.
As a further aspect of the present invention, the fixing assembly includes:
the fixing seat is used for installing the fixing component;
the second pressure ring is connected with the fixed seat and used for controlling humidity;
the stainless iron comprises stainless iron, wherein one end of the stainless iron is connected with a fixed seat, the other end of the stainless iron is connected with a gland, the stainless iron is used for controlling humidity, and the gland is used for preventing explosion.
As a further scheme of the utility model, the fixing assembly further comprises membrane paper, and the membrane paper is attached to the fixing seat through M glue.
As a further aspect of the present invention, the guide mechanism is connected to a second seal assembly, the second seal assembly includes:
the special-shaped sealing ring is arranged in the main body, the main body is connected with the fixing assembly, and the special-shaped sealing ring is used for controlling humidity;
the elastic sheet is used for limiting the check valve during pressure relief and preventing the check valve from returning, and high-temperature and high-pressure gas is continuously discharged to the outside; and
and the inner sealing ring is used for controlling humidity.
In summary, compared with the prior art, the embodiment of the utility model has the following beneficial effects:
when the battery pack is in a thermal runaway state, a large amount of air pressure needs to be discharged instantly, the battery pack has an outward extremely rapid directional pressure relief function, the internal pressure is released instantly, the safety factor is improved, and the corresponding air circulation route is provided.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of normal operation in the embodiment of the present invention.
Fig. 3 is a schematic structural view of the operation of the embodiment of the present invention in which the internal pressure is large.
Fig. 4 is a schematic structural view of the embodiment of the present invention in which the external pressure is large.
Fig. 5 is a schematic structural view illustrating the case where the internal pressure is suddenly increased in the embodiment of the present invention.
Reference numerals: 1-a protective sleeve, 2-a first fixed seat, 3-an inner O-shaped ring, 4-a first guide shaft, 5-a spring, 6-a first spring, 7-a second guide shaft, 8-a steel ball, 9-a second spring, 10-a first press ring, 11-a special-shaped seal ring, 12-a main body, 13-a spring plate, 14-a circlip for a shaft, 15-an inner seal ring, 16-a fixed seat, 17-membrane paper, 18-a second press ring, 19-stainless iron, 20-a gland, 21-a guide mechanism, 22-a second sealing component, 23-a fixed component and 24-a first sealing component.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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" or "second" 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 specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
In one embodiment, a check type metal spring humidity control explosion-proof vent valve, see fig. 1, includes a protection sleeve 1, the protection sleeve 1 is disposed in a battery, the protection sleeve 1 is connected with a check valve device, the check valve device is used for discharging high-temperature and high-pressure gas in the battery to the outside, and further includes:
the guide mechanism 21 comprises a second guide shaft 7 and a first pressing ring 10, the second guide shaft 7 is connected with the first pressing ring 10 in an interference fit mode, and the guide mechanism 2 is used for increasing a limiting structure;
a first sealing assembly 24, wherein the first sealing assembly 24 is connected with the guide mechanism 21, and the first sealing assembly 24 is used for sealing the guide mechanism 21; and
Further, referring to fig. 1, the guiding mechanism 21 further includes:
the steel ball 8 is movably connected with the second guide shaft 7 through a spring 5, and the steel ball 8 is used for moving and controlling dust and impurities released by the battery cell to be directly discharged from the opened check valve; and
a second spring 9, wherein the second spring 9 is connected with the second guide shaft 7, and the second spring 9 is arranged in the second guide shaft 7.
In a preferred embodiment, referring to fig. 1, the first seal assembly 24 comprises:
the first fixed seat 2 is used for installing a first sealing assembly 24;
the inner O-shaped ring 3 is movably connected with the first fixed seat 2, the inner O-shaped ring 3 is used for sealing a first guide shaft 4, and the inner O-shaped ring 3 is arranged in the first guide shaft 4; and
and the first spring 6 is movably connected with the first guide shaft 4 and the second guide shaft 7.
In a preferred embodiment, referring to fig. 1, the fixing assembly 23 comprises:
the fixed seat 16, the fixed seat 16 is used for installing the fixed component 23;
the second pressing ring 18 is connected with the fixed seat 16, and the second pressing ring 18 is used for controlling humidity;
one end of the stainless iron 19 is connected with the fixed seat 16, the other end of the stainless iron 19 is connected with the gland 20, the stainless iron 19 is used for controlling humidity, and the gland 20 is used for preventing explosion.
Further, referring to fig. 1, the fixing assembly 23 further includes a film paper 17, and the film paper 17 is attached to the fixing base 16 through 3M glue.
In a preferred embodiment, referring to fig. 1, the guiding mechanism 21 is connected to a second sealing assembly 22, the second sealing assembly 22 comprising:
the special-shaped sealing ring 11 is arranged in the main body 12, the main body 12 is connected with the fixing assembly 23, and the special-shaped sealing ring 11 is used for controlling humidity;
the elastic sheet 13 is used for limiting the check valve during pressure relief and preventing the check valve from returning, and high-temperature and high-pressure gas is continuously discharged to the outside; and
an inner sealing ring 15, the inner sealing ring 15 is used for controlling humidity.
In the embodiment, as shown in fig. 2, under the normal working condition of the explosion-proof ventilation valve, the internal and external air is not communicated (the explosion-proof valve is closed), and the entering of moisture is effectively blocked; as figure 3, when the inside atmospheric pressure of box is greater than the predetermined pressure, the spring compression, the steel ball is opened, and inside gas outflow reaches the balanced inside and outside pressure differential effect of pressure release, and the gas flow direction is one-way exhaust, and the flow route is: a → a, the waterproof and breathable functions are realized mainly by the waterproof and breathable membrane paper 17 inside the product; as figure 4, when outside atmospheric pressure is greater than the inside predetermined pressure of box, the spring compression, fixing base 1 opens, and outside gas gets into, reaches the interior differential pressure effect of balance box, and the gas flow direction is one-way exhaust, and the flow route is: b → b, mainly realize waterproof ventilative function through the inside waterproof ventilated membrane of product, like fig. 5, increase fast when the inside atmospheric pressure of box, when the pressure release volume of operating mode 1 has can't satisfy inside gas pressure release volume, reach certain pressure after, explosion-proof valve lid is opened, reach quick pressure release effect, like battery thermal runaway state, need discharge a large amount of atmospheric pressure in the twinkling of an eye, the inside high pressure that produces of battery package promotes the fixing base and opens and realize one-way exhaust circulation route, and the battery package is: c → c, improving the thermal runaway buffer safety time, preventing the sealed cavity from explosion or burst, and improving the protection of drivers and passengers; meanwhile, the explosion-proof valve under the abnormal working condition has the advantages that the limiting structure is additionally arranged, the check valve is limited and cannot be restored when the pressure is released, high-temperature and high-pressure gas is continuously discharged to the outside, meanwhile, the check valve can be prevented from being blocked by dust and impurities released by the battery core, and the reliability of the check valve is greatly enhanced when the battery pack is out of thermal control.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a wet explosion-proof breather valve of check formula metal spring accuse, includes the protective sheath, the protective sheath sets up in the battery, the check valve device is connected to the protective sheath, the check valve device is used for discharging high temperature high-pressure gas in the battery to the external world, its characterized in that still includes:
the guide mechanism comprises a second guide shaft and a first pressing ring, the second guide shaft is connected with the first pressing ring in an interference fit mode, and the guide mechanism is used for increasing a limiting structure;
the first sealing assembly is connected with the guide mechanism and is used for sealing the guide mechanism; and
the fixed assembly is connected with the first sealing assembly, a check valve device is arranged in the fixed assembly, and the opened sectional area can be fixed after the fixed assembly is opened, so that rapid and continuous pressure relief is guaranteed.
2. The moisture control, explosion proof breather valve of one-way metal spring as claimed in claim 1, wherein the guide mechanism further comprises:
the steel ball is movably connected with the second guide shaft through a spring and used for moving and controlling dust and impurities released by the battery cell to be directly discharged from the opened check valve; and
and the second spring is connected with the second guide shaft and is arranged in the second guide shaft.
3. The moisture control, explosion proof breather valve of claim 1, wherein the first seal assembly comprises:
the first fixed seat is used for installing a first sealing assembly;
the inner O-shaped ring is movably connected with the first fixed seat, is used for sealing the first guide shaft and is arranged in the first guide shaft; and
the first spring is movably connected with the first guide shaft and the second guide shaft.
4. The moisture control, explosion proof breather valve of one-way metal spring as claimed in claim 1, wherein the securing assembly comprises:
the fixing seat is used for installing the fixing component;
the second pressure ring is connected with the fixed seat and used for controlling humidity;
the stainless iron comprises stainless iron, wherein one end of the stainless iron is connected with a fixed seat, the other end of the stainless iron is connected with a gland, the stainless iron is used for controlling humidity, and the gland is used for preventing explosion.
5. The moisture-control explosion-proof breather valve of one-way metal spring according to claim 4, wherein the fixing assembly further comprises a membrane paper, and the membrane paper is attached to the fixing seat through M glue.
6. The moisture control, explosion proof vent valve of one-way metal spring as claimed in claim 1, wherein said guide mechanism is connected to a second seal assembly, said second seal assembly comprising:
the special-shaped sealing ring is arranged in the main body, the main body is connected with the fixing assembly, and the special-shaped sealing ring is used for controlling humidity;
the elastic sheet is used for limiting the check valve during pressure relief and preventing the check valve from returning, and high-temperature and high-pressure gas is continuously discharged to the outside; and
and the inner sealing ring is used for controlling humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121348534.5U CN215568239U (en) | 2021-06-17 | 2021-06-17 | Wet explosion-proof breather valve of check formula metal spring accuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121348534.5U CN215568239U (en) | 2021-06-17 | 2021-06-17 | Wet explosion-proof breather valve of check formula metal spring accuse |
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| Publication Number | Publication Date |
|---|---|
| CN215568239U true CN215568239U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121348534.5U Active CN215568239U (en) | 2021-06-17 | 2021-06-17 | Wet explosion-proof breather valve of check formula metal spring accuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066615A1 (en) * | 2022-09-29 | 2024-04-04 | 深圳市长盈精密技术股份有限公司 | Balance explosion-proof valve |
-
2021
- 2021-06-17 CN CN202121348534.5U patent/CN215568239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066615A1 (en) * | 2022-09-29 | 2024-04-04 | 深圳市长盈精密技术股份有限公司 | Balance explosion-proof valve |
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