CN221009154U - Explosion-proof balance valve made of plastic material - Google Patents
Explosion-proof balance valve made of plastic material Download PDFInfo
- Publication number
- CN221009154U CN221009154U CN202322560719.8U CN202322560719U CN221009154U CN 221009154 U CN221009154 U CN 221009154U CN 202322560719 U CN202322560719 U CN 202322560719U CN 221009154 U CN221009154 U CN 221009154U
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- Prior art keywords
- valve
- explosion
- umbrella
- accommodating part
- breathable film
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- 239000004033 plastic Substances 0.000 title claims abstract description 36
- 229920003023 plastic Polymers 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 4
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to an explosion-proof balance valve made of plastic materials, which comprises a valve body, a valve core, a waterproof breathable film and a spring, wherein the valve core is arranged on the valve body; the valve body is made of plastic materials, the top of the valve body is provided with a first containing part in an opening shape, and the bottom of the valve body is respectively provided with a guide part and a plurality of hollowed-out parts; a first sealing ring is arranged at the bottom of the first accommodating part; the valve core is made of plastic materials and comprises an umbrella valve and a valve handle; the umbrella valve is arranged in the first accommodating part, and a metal sheet is arranged between the umbrella valve and the first sealing ring; the top of the umbrella valve is provided with a second accommodating part and a plurality of air holes; the valve handle vertically passes through the guide part, and the bottom of the valve handle is provided with a ventilation channel communicated with the second accommodating part; the waterproof breathable film is arranged in the second accommodating part; the spring is sleeved on the valve handle; according to the utility model, the main structure is changed into the plastic material, so that the cost can be greatly reduced, and the metal sheet is arranged between the umbrella valve and the first sealing ring, so that the sealing performance is good, and the umbrella valve is not easy to adhere for a long time.
Description
Technical Field
The utility model relates to the field of explosion-proof balance valves, in particular to an explosion-proof balance valve made of plastic materials.
Background
The electric vehicle power system (battery PACK, electric control, motor and the like) is used as the core of the new energy electric vehicle, and the safety and the working reliability of the electric vehicle are important. In order to ensure safe and stable operation, water and dust prevention is needed, namely, in theory, complete sealing is needed, but in a complete sealing state, once abnormal thermal runaway such as short circuit, battery overcharge or overdischarge occurs in the interior, a large amount of high temperature and high pressure is generated, a large amount of solid-gas mixture containing solid or colloid substances is generated, and if the solid-gas mixture cannot be discharged in time, intense fire and explosion can occur under the normal condition, so that serious casualties and property loss are caused. Therefore, at present, a scheme of installing 1 or more waterproof ventilation valves and explosion-proof ventilation balance valves on power system components such as a battery pack is adopted to waterproof and explosion-proof the power battery system, so that casualties and property loss caused by explosion are prevented or reduced.
The novel plastic material pressure relief explosion-proof balance valve disclosed in the prior art 202310397336.5 is made of engineering plastics by changing the main body part of the pressure relief explosion-proof balance valve, so that the cost of the product can be greatly reduced on the premise of unchanged product performance and function, but the following problems exist:
1. the surface roughness of the plastic part is not good with metal, and the sealing effect is poor;
2. if the injection molding piece is adhered to the sealing ring for a long time, the injection molding piece cannot be opened under the set pressure, and the opening of the umbrella valve is affected.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide an explosion-proof balance valve made of plastic materials.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an explosion-proof balance valve made of plastic comprises a valve body, a valve core, a waterproof breathable film and a spring;
The valve body is made of plastic materials, the top of the valve body is provided with a first containing part in an opening shape, and the bottom of the valve body is respectively provided with a guide part and a plurality of hollowed-out parts; a first sealing ring is arranged at the bottom of the first accommodating part; the guide part is coaxially arranged with the valve body; the hollowed-out parts are placed around the guide part and positioned in the first sealing ring;
The valve core is made of plastic materials and is umbrella-shaped and comprises an umbrella valve and a valve handle; the umbrella valve is arranged in the first accommodating part, and a metal sheet is arranged between the umbrella valve and the first sealing ring; the top of the umbrella valve is provided with a second accommodating part; a plurality of air holes are formed in the side face of the second accommodating part; the valve handle vertically passes through the guide part, and the bottom of the valve handle is provided with a ventilation channel communicated with the second accommodating part;
The waterproof breathable film is arranged in the second accommodating part, and the edge of the waterproof breathable film is connected with the second accommodating part in a sealing way;
The spring is sleeved on the valve handle, so that the valve core is tightly attached to the first sealing ring under certain pressure.
Preferably, the umbrella valve and the metal sheet are manufactured by an in-mold injection molding process.
Preferably, the waterproof and breathable film and the second accommodating part of the valve core are fixed together by welding means such as hot melting or ultrasonic wave.
Preferably, the waterproof breathable film is one of metal, plastic or rubber airtight films.
Preferably, the waterproof breathable membrane is an ePTFE breathable membrane.
Preferably, the spring is sleeved with a sheath; the sheath is connected with the guide part; the sheath is made of plastic materials.
Preferably, the umbrella valve and the valve handle are connected in an interference, buckling or threaded locking mode.
Preferably, the second accommodating part is also in an opening shape, and a valve cover which is arranged in parallel with the waterproof breathable film is arranged at the opening part; the valve cover is made of metal materials.
Preferably, the valve cover is connected with the valve core in a hot-melt welding mode.
Preferably, a second sealing ring is arranged at the bottom of the valve body.
Preferably, the valve body is mounted on the battery pack housing by threads, bolts, buckles or interference fit.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
According to the utility model, the main structure is changed into the plastic material, so that the cost is greatly reduced on the premise of ensuring the original product performance and functions, and the metal sheet is arranged between the umbrella valve and the first sealing ring, so that the valve is good in tightness, not easy to adhere for a long time, and the strength of the valve core is also increased.
Drawings
The technical scheme of the utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a cross-sectional view of an explosion-proof balance valve of plastic material according to the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the valve body of the present utility model;
fig. 4 is a schematic structural diagram of the valve core in the present utility model.
Wherein: 1. a valve body; 11. a first accommodation portion; 12. a guide part; 13. a hollowed-out part; 2. a valve core; 21. an umbrella valve; 22. a valve handle; 23. a second accommodating portion; 24. air holes; 25. a ventilation channel; 3. a waterproof breathable film; 4. a spring; 5. a first seal ring; 6. a metal sheet; 7. a sheath; 8. a valve cover; 9. and a second sealing ring.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
1-4 Are explosion-proof balance valves made of plastic materials, which comprise a valve body 1, a valve core 2, a waterproof breathable film 3 and a spring 4;
The valve body 1 is made of plastic materials, a first containing part 11 with an opening shape is arranged at the top, and a guide part 12 and a plurality of hollowed-out parts 13 are respectively arranged at the bottom; the bottom of the first accommodating part 11 is provided with a first sealing ring 5; the guide part 12 is coaxially arranged with the valve body 1; the hollowed-out parts 13 are placed around the guide parts 12 and positioned in the first sealing ring 5;
The valve core 2 is made of plastic material and is umbrella-shaped and comprises an umbrella valve 21 and a valve handle 22; the umbrella valve 21 is arranged in the first accommodating part 11, and a metal sheet 6 is arranged between the umbrella valve and the first sealing ring 5; the top of the umbrella valve 21 is provided with a second accommodating part 23; the side surface of the second accommodating part 23 is provided with a plurality of air holes 24; the valve handle 22 vertically passes through the guide part 12, and the bottom is provided with a ventilation channel 25 communicated with the second accommodating part 23;
The waterproof and breathable film 3 is arranged in the second accommodating part 23, and the edge of the waterproof and breathable film 3 is in sealing connection with the second accommodating part 23;
the spring 4 is sleeved on the valve handle 22, so that the valve core 2 is tightly attached to the first sealing ring 5 under certain pressure.
When in installation: according to the actual application requirements, the explosion-proof balance valve is arranged on the shell of the battery pack in a threaded, fastening, interference fit or other modes; when the battery pack works normally, the internal pressure is smaller, at the moment, the metal sheet 6 at the bottom of the umbrella valve 21 is tightly attached to the first sealing ring 5 on the valve body 1 under the action of the spring 4, and because the ventilation channel 25 is arranged in the valve handle 22 of the valve core 2, gas can freely enter and exit through the ventilation channel 25, so that the internal pressure and the external pressure of the battery pack are balanced, and the waterproof ventilation membrane 3 has the waterproof ventilation function; when the battery pack works abnormally and the internal pressure suddenly rises, the ventilation channel 25 can overcome the elasticity of the spring 4 to quickly separate the valve body 1 from the umbrella valve 21 so as to play a role of blasting when the internal pressure of the battery pack is not discharged.
Further, the waterproof and breathable film 3 and the second accommodating portion 23 of the valve element 2 are fixed together by welding means such as hot melting or ultrasonic, which can be determined according to practical application requirements, and the adaptability is wide.
Furthermore, the waterproof breathable film 3 is one of metal, plastic or rubber airtight films, can be determined according to practical application requirements, and has wide adaptability.
Furthermore, the waterproof breathable film 3 is an ePTFE breathable film, can be determined according to practical application requirements, and has wide adaptability.
Further, a sheath 7 is sleeved outside the spring 4; the sheath 7 is connected with the guide part 12; the sheath 7 is made of plastic material; the utility model can protect the spring 4 from being affected by sundries through the sheath 7, and ensure the effective work of the spring 4.
Further, the umbrella valve 21 and the valve handle 22 are connected in an interference, buckling or thread locking mode, so that the umbrella valve is convenient to process and assemble.
Further, the second accommodating portion 23 is also in an opening shape, and a valve cover 8 placed in parallel with the waterproof and breathable film 3 is arranged at the opening; the valve cover 8 is made of metal materials, can protect the waterproof breathable film 3, prevent external objects from puncturing the waterproof breathable film 3, and prolong the service life of the waterproof breathable film 3.
Further, the valve cover 8 is connected with the valve core 2 in a hot-melt welding mode, and is suitable for plastic welding.
Further, a second sealing ring 9 is arranged at the bottom of the valve body 1, and plays a role in sealing when the valve body is installed on the battery pack shell.
The foregoing is merely a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the utility model.
Claims (10)
1. An explosion-proof balance valve of plastics material, its characterized in that: comprises a valve body, a valve core, a waterproof and breathable film and a spring;
The valve body is made of plastic materials, the top of the valve body is provided with a first containing part in an opening shape, and the bottom of the valve body is respectively provided with a guide part and a plurality of hollowed-out parts; a first sealing ring is arranged at the bottom of the first accommodating part; the guide part is coaxially arranged with the valve body; the hollowed-out parts are placed around the guide part and positioned in the first sealing ring;
The valve core is made of plastic materials and is umbrella-shaped and comprises an umbrella valve and a valve handle; the umbrella valve is arranged in the first accommodating part, and a metal sheet is arranged between the umbrella valve and the first sealing ring; the top of the umbrella valve is provided with a second accommodating part; a plurality of air holes are formed in the side face of the second accommodating part; the valve handle vertically passes through the guide part, and the bottom of the valve handle is provided with a ventilation channel communicated with the second accommodating part;
The waterproof breathable film is arranged in the second accommodating part, and the edge of the waterproof breathable film is connected with the second accommodating part in a sealing way;
The spring is sleeved on the valve handle, so that the valve core is tightly attached to the first sealing ring under the set pressure.
2. The explosion-proof balancing valve made of plastic according to claim 1, wherein: the umbrella valve and the metal sheet are manufactured through an in-mold injection molding process.
3. The explosion-proof balancing valve of plastic material according to claim 2, wherein: the waterproof breathable film and the second containing part of the valve core are fixed together in a hot melting or ultrasonic welding mode.
4. A plastic explosion-proof balancing valve according to claim 3, wherein: the waterproof breathable film is one of metal, plastic or rubber airtight films.
5. The explosion-proof balance valve of plastic material according to claim 4, wherein: the waterproof breathable film is an ePTFE breathable film.
6. The explosion-proof balancing valve made of plastic according to any one of claims 1 to 5, wherein: the spring is sleeved with a sheath; the sheath is connected with the guide part; the sheath is made of plastic materials.
7. The explosion-proof balance valve of plastic material according to claim 6, wherein: the umbrella valve and the valve handle are connected in an interference, buckling or threaded locking mode.
8. The explosion-proof balance valve of plastic material according to claim 7, wherein: the second accommodating part is also in an opening shape, and a valve cover which is arranged in parallel with the waterproof breathable film is arranged at the opening part; the valve cover is made of metal materials.
9. The explosion-proof balance valve of plastic material according to claim 8, wherein: the valve cover is connected with the valve core in a hot-melt welding mode.
10. The explosion-proof balancing valve of plastic material according to claim 9, wherein: the bottom of valve body is provided with the second sealing washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322560719.8U CN221009154U (en) | 2023-09-20 | 2023-09-20 | Explosion-proof balance valve made of plastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322560719.8U CN221009154U (en) | 2023-09-20 | 2023-09-20 | Explosion-proof balance valve made of plastic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221009154U true CN221009154U (en) | 2024-05-24 |
Family
ID=91113836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322560719.8U Active CN221009154U (en) | 2023-09-20 | 2023-09-20 | Explosion-proof balance valve made of plastic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221009154U (en) |
-
2023
- 2023-09-20 CN CN202322560719.8U patent/CN221009154U/en active Active
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