CN215861920U - Waterproof ventilation valve of quick pressure release based on binary channels - Google Patents
Waterproof ventilation valve of quick pressure release based on binary channels Download PDFInfo
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- CN215861920U CN215861920U CN202122251666.2U CN202122251666U CN215861920U CN 215861920 U CN215861920 U CN 215861920U CN 202122251666 U CN202122251666 U CN 202122251666U CN 215861920 U CN215861920 U CN 215861920U
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- waterproof
- pressure relief
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a quick pressure-relief waterproof vent valve based on double channels, which comprises: valve main part, pressure release movable assembly, waterproof ventilated membrane and location gland. Wherein, the valve main part is provided with a connecting through hole and a pressure relief vent hole, and the pressure relief movable assembly is arranged at the connecting through hole. The pressure relief movable assembly comprises: the lifting plugging cover is provided with a plugging cover through hole, the connecting rod through hole is provided with a connecting rod, and the plugging cover through hole is communicated with the connecting rod through hole to form a first exhaust channel. The waterproof ventilated membrane is arranged at a passage port of the first exhaust passage, the positioning gland is arranged on the valve main body, a ventilating gap exists between the positioning gland and the valve main body, and the positioning gland presses and holds the waterproof ventilated membrane. An exhaust gap is formed between the connecting rod and the valve main body, and the exhaust gap is communicated with the pressure relief exhaust hole to form a second exhaust channel. This waterproof ventilation valve can be when taking place the thermal runaway phenomenon, and the gas escape in the battery package module fast.
Description
Technical Field
The utility model relates to the technical field of waterproof vent valves, in particular to a quick pressure relief waterproof vent valve based on two channels.
Background
At present, electric automobile's battery package module is mostly the integration of lithium cell group, and at car operation and braking in-process, the battery package module can generate heat and produce gas, need exhaust the battery package module, and need prevent in the exhaust process that outside steam from getting into the battery package module, for satisfying above-mentioned demand, waterproof breather valve is just bred and is given birth to.
Traditional waterproof ventilation valve can only satisfy the ventilative needs of battery package module under normal operating condition, but, when the battery package module is unusual, when the thermal runaway phenomenon takes place, the temperature of battery package module risees rapidly, and the gas rapid expansion in it, at this moment, traditional waterproof ventilation valve just can't satisfy quick carminative needs. If can not in time lose heart, can make the pressure increase in the battery package module, damage the lithium cell in the battery package module easily, can lead to the battery short circuit to initiate the battery burning when serious, bring the incident.
Therefore, how to design a waterproof permeability valve of quick pressure release based on binary channels, when taking place the thermal runaway phenomenon, quick with the gas outgoing in the battery package module, this is the technical problem that this field technical personnel need solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a double-channel-based rapid pressure-relief waterproof vent valve which can rapidly discharge gas in a battery pack module when thermal runaway occurs, so that a battery is protected and the possibility of safety accidents is reduced.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a waterproof breather valve of quick pressure release based on binary channels, includes: the pressure relief valve comprises a valve main body, a pressure relief movable assembly, a waterproof breathable film and a positioning gland;
the valve main body is provided with a connecting through hole and a pressure relief vent hole, and the pressure relief movable assembly is arranged at the connecting through hole;
the pressure relief movable assembly comprises: the lifting plugging cover, the connecting rod and the pressure elastic piece are arranged on the lifting plugging cover; the lifting plugging cover plugs or is separated from the pressure relief exhaust hole, the lifting plugging cover is connected with the connecting rod, and the connecting rod is connected with the valve main body through the pressure elastic piece; the lifting plugging cover is provided with a plugging cover through hole, the connecting rod is provided with a connecting rod through hole, and the plugging cover through hole is communicated with the connecting rod through hole to form the first exhaust channel;
the waterproof breathable film is arranged at a passage opening of the first exhaust passage, the positioning gland is arranged on the valve main body, a breathable gap is formed between the positioning gland and the valve main body, the positioning gland is pressed on the waterproof breathable film, and the positioning gland is provided with a breathable hole;
an exhaust gap is formed between the connecting rod and the valve main body, and the exhaust gap is communicated with the pressure relief exhaust hole to form a second exhaust channel.
In one embodiment, the valve body is divided into a locking part and an exposed part, and the outer side wall of the locking part is provided with threads.
In one embodiment, an outer sealing ring is arranged on the outer side wall of the locking part.
In one embodiment, an inner sealing ring is arranged inside the valve main body, and the inner sealing ring and the lifting blocking cover are matched to block the pressure relief vent hole.
In one embodiment, a limiting groove is further formed in the valve body, and the inner sealing ring is contained in the limiting groove.
In one embodiment, the lifting plugging cover is provided with an external thread, and the connecting rod is provided with an internal thread matched with the external thread.
In one embodiment, the pressure elastic member is a spring structure.
In one embodiment, the connecting rod is provided with an anti-falling blocking end.
In one embodiment, the exposed portion of the valve body is a polygonal prism structure.
In one embodiment, the exposed portion of the valve body is a hexagonal prism structure.
In conclusion, the utility model provides the double-channel-based rapid pressure-relief waterproof vent valve, which can rapidly discharge gas in the battery pack module when a thermal runaway phenomenon occurs, so that the battery is protected, and the possibility of safety accidents is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a rapid pressure relief waterproof vent valve based on two channels;
FIG. 2 is a top view of the rapid pressure relief waterproof breather valve based on two channels shown in FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a top view of the valve body;
FIG. 5 is a cross-sectional view of the valve body shown in FIG. 4;
FIG. 6 is a schematic view of the construction of the lifting block-off cap shown in FIG. 3;
FIG. 7 is a cross-sectional view of the lifting block-off cap shown in FIG. 3;
FIG. 8 is a schematic structural view of the connecting rod shown in FIG. 3;
FIG. 9 is a schematic view of the positioning gland shown in FIG. 3;
fig. 10 is a schematic view of the state of the rapid pressure relief waterproof vent valve based on the double channels in rapid pressure relief.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured 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 as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, 2 and 3, the present invention provides a rapid pressure-relief waterproof air-permeable valve 10 based on two channels, comprising: the valve comprises a valve body 100, a pressure relief movable assembly 200, a waterproof breathable film 300 and a positioning gland 400. The valve body 100 is provided with a connecting through hole 110 and a pressure relief vent 120 (as shown in fig. 4 and 5), and the pressure relief movable assembly 200 is installed at the connecting through hole 110.
Specifically, as shown in fig. 3, the pressure relief event assembly 200 includes: a lifting block-off cover 210, a connecting rod 220 and a pressure elastic member 230. The lifting blocking cover 210 blocks or separates from the pressure relief vent hole 120, the lifting blocking cover 210 is connected with a connecting rod 220, and the connecting rod 220 is connected with the valve body 100 through a pressure elastic member 230. The lifting plugging cover 210 is provided with a plugging cover through hole 211 (shown in fig. 3, 6 and 7), the connecting rod 220 is provided with a connecting rod through hole 221 (shown in fig. 3 and 8), and the plugging cover through hole 211 and the connecting rod through hole 221 are communicated to form a first exhaust channel 510;
as shown in fig. 3, the waterproof permeable membrane 300 is disposed at the channel opening of the first exhaust channel 510, the positioning gland 400 is disposed on the valve main body 100, a permeable gap 600 exists between the positioning gland 400 and the valve main body 100, the positioning gland 400 is pressed on the waterproof permeable membrane 300, and the positioning gland 400 is provided with a permeable hole 410 (as shown in fig. 9);
as shown in fig. 3, an exhaust gap 501 is formed between the connecting rod 220 and the valve body 100, and the exhaust gap 501 and the pressure relief vent 120 penetrate to form a second exhaust channel 520.
When the battery pack module normally works, the quick pressure-relief waterproof vent valve 10 based on the two channels of the utility model discharges gas generated by the module through the first exhaust channel 510, as shown in fig. 3, the specific exhaust path is as follows: the gas passes through the connecting rod through hole 221, the blocking cover through hole 211, the waterproof breathable film 300, the air holes 410 and the breathable gap 600 in sequence and is finally discharged to the outside atmosphere. The air exhaust path needs to pass through the waterproof breathable film 300, so that rainwater, dirt, debris and the like can be effectively prevented from invading, the integrity of sealing is protected, and the service life of the battery pack module is prolonged; when the battery pack module is not operated normally (thermal runaway), the gas generated in the module expands rapidly, and the high-pressure gas overcomes the elastic force of the pressure elastic member 230 and is discharged through the second gas discharge channel 520, as shown in fig. 10, the specific gas discharge path is: the high-pressure gas passes through the exhaust gap 501, the pressure relief exhaust hole 120 and the ventilation gap 600 in sequence, and is finally discharged to the outside atmosphere. This exhaust route can discharge the high-pressure gas in the battery package module fast, reduces the emergence of incident.
In this embodiment, as shown in fig. 10, an inner sealing ring 130 is disposed inside the valve body 100, and the inner sealing ring 130 cooperates with the lifting blocking cover 210 to block the pressure relief vent hole 120. Preferably, the pressure elastic member 230 has a spring structure, and is more stably restored during the process of providing the elastic force to the pressure relief movable assembly 200.
In this embodiment, as shown in fig. 5, the valve body 100 is divided into a locking portion 140 and an exposed portion 150, and the outer side wall of the locking portion 140 is provided with a thread, so that the rapid pressure relief waterproof breather valve 10 based on two channels and the battery pack module can be conveniently installed. Preferably, an outer sealing ring 160 (as shown in fig. 10) is disposed on an outer side wall of the locking portion 150, and the outer sealing ring 160 increases the air tightness of the two-channel-based rapid pressure relief waterproof vent valve 10, and blocks the possibility that the external atmosphere and the gas in the battery pack module are communicated through a gap of the locking portion 150.
The working principle of the two-channel-based rapid pressure-relief waterproof breather valve 10 is specifically described below with reference to the above structure:
the rapid pressure relief waterproof vent valve 10 based on the double channels is arranged on a battery pack module, after the rapid pressure relief waterproof vent valve is arranged, a locking part 140 is fixedly connected with the battery pack module, gas generated in the battery pack module is discharged into the external atmosphere through the waterproof vent valve, and the discharge mode of the gas is changed according to the change of the working state of the battery pack module;
when the battery pack module normally works, the air pressure in the battery pack module is small, the pressure elastic piece 230 is in an extension state, the lifting plugging cover 210 is attached to the valve main body 100 under the action of the elastic force of the pressure elastic piece 230, and at the moment, as shown in fig. 3, the lifting plugging cover 210 is matched with the inner sealing ring 130 to completely plug the pressure relief vent hole 120, so that the gas in the battery pack module cannot pass through the pressure relief vent hole 120. During exhaust, the gas generated in the module can only be exhausted through the first exhaust channel 510, as shown in fig. 3, the specific exhaust path is: the gas passes through the connecting rod through hole 221, the blocking cover through hole 211, the waterproof breathable film 300, the breathable holes 410 and the breathable gap 600 in sequence and is finally discharged to the outside atmosphere, so that the gas must pass through the waterproof breathable film 300 when being discharged, and the dual-channel-based quick pressure-relief waterproof breathable valve 10 can effectively prevent rainwater, dirt, debris and the like from entering the battery pack module under a normal state;
when the battery pack module is abnormally operated (thermal runaway), the gas generated in the module is rapidly expanded, the air pressure is rapidly increased, and the high-pressure gas acts on the lifting plugging cover 210 through the pressure relief vent hole 120. The high pressure gas is enough to overcome the elastic force of the pressure elastic member 230, so that the lifting blocking cover 210 and the connecting rod 220 are lifted, and at this time, as shown in fig. 10, the lifted lifting blocking cover 210 will no longer block the pressure relief vent hole 120. In this case, the gas generated in the module can be rapidly exhausted through the second exhaust passage 520 in addition to the first exhaust passage 510, as shown in fig. 10, and the specific exhaust paths are: the high-pressure gas passes through the exhaust gap 501, the pressure relief exhaust hole 120 and the ventilation gap 600 in sequence, and is finally discharged to the outside atmosphere. Thus, most of the high-pressure gas can be rapidly exhausted through the second exhaust channel 520 at the first time, and the damage of the high pressure to the battery pack module is avoided;
when the battery pack module recovers to be normal, the atmosphere inside and outside the module reaches balance again, namely, the air pressure in the module is reduced, under the action of the elastic force of the pressure elastic piece 230, the lifting plugging cover 210 and the connecting rod 220 start to reset, the lifting plugging cover 210 is attached to the valve main body 100 again, and the lifting plugging cover 210 is matched with the inner sealing ring 130 to plug the pressure relief vent hole 120 again.
In one embodiment, as shown in fig. 5, a limiting groove 170 is further formed in the valve body 100, and the inner sealing ring 130 is accommodated in the limiting groove 170, so that the inner sealing ring 130 can be kept stable and is not prone to offset and dislocation in the process of pressing and separating the lifting plugging cover 210 from the inner sealing ring 130.
In one embodiment, the lifting block-off cap 210 is provided with an external thread 212 (as shown in fig. 7), and the connecting rod 220 is provided with an internal thread 222 (as shown in fig. 8) matching with the external thread 212, so that the mutual positioning of the lifting block-off cap 210 and the connecting rod 220 can be better realized through the threaded connection, and the connection process is more convenient.
In one embodiment, as shown in fig. 8, the connecting rod 220 is provided with an anti-falling blocking end 223, one end of the pressure elastic member 230 abuts against the anti-falling blocking end 223, and the other end abuts against the valve main body 100. The anti-slip blocking end 223 provides a support for the pressure elastic member 230, prevents the pressure elastic member 230 from being separated from the connecting rod 220 in the resetting process, and ensures that the pressure relief movable assembly 200 can be recycled.
In one embodiment, as shown in fig. 1 and 4, the exposed portion 150 of the valve body 100 has a polygonal prism structure; preferably, the exposed portion 150 is a hexagonal prism structure. The polygonal prism structure is used for applying force to the double-channel-based quick pressure relief waterproof ventilation valve 10 in the installation or disassembly process conveniently, and the polygonal prism structure is not easy to slip relative to the cylinder structure. A hexagonal prism configuration is preferred to better fit commercially available wrench tools.
In conclusion, according to the dual-channel-based rapid pressure-relief waterproof vent valve 10, when the thermal runaway phenomenon occurs in the battery pack module, high-pressure gas in the battery pack module can be rapidly discharged, so that the battery is protected, and the possibility of safety accidents is reduced.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a waterproof ventilation valve of quick pressure release based on binary channels which characterized in that includes: the pressure relief valve comprises a valve main body, a pressure relief movable assembly, a waterproof breathable film and a positioning gland;
the valve main body is provided with a connecting through hole and a pressure relief vent hole, and the pressure relief movable assembly is arranged at the connecting through hole;
the pressure relief movable assembly comprises: the lifting plugging cover, the connecting rod and the pressure elastic piece are arranged on the lifting plugging cover; the lifting plugging cover plugs or is separated from the pressure relief exhaust hole, the lifting plugging cover is connected with the connecting rod, and the connecting rod is connected with the valve main body through the pressure elastic piece; the lifting plugging cover is provided with a plugging cover through hole, the connecting rod is provided with a connecting rod through hole, and the plugging cover through hole is communicated with the connecting rod through hole to form a first exhaust channel;
the waterproof breathable film is arranged at a passage opening of the first exhaust passage, the positioning gland is arranged on the valve main body, a breathable gap is formed between the positioning gland and the valve main body, the positioning gland is pressed on the waterproof breathable film, and the positioning gland is provided with a breathable hole;
an exhaust gap is formed between the connecting rod and the valve main body, and the exhaust gap is communicated with the pressure relief exhaust hole to form a second exhaust channel.
2. The two-channel-based rapid pressure relief, waterproof and breathable valve according to claim 1, wherein the valve body is divided into a locking portion and an exposed portion, and the outer side wall of the locking portion is provided with threads.
3. The two-channel-based rapid pressure relief waterproof vent valve according to claim 2, wherein an outer sealing ring is arranged on the outer side wall of the locking portion.
4. The two-channel-based rapid pressure-relief waterproof vent valve as claimed in claim 1, wherein an inner sealing ring is arranged inside the valve body, and the inner sealing ring and the lifting blocking cover are matched to block the pressure-relief vent hole.
5. The double-channel-based rapid pressure-relief waterproof breather valve as claimed in claim 4, wherein a limiting groove is further formed in the valve body, and the inner seal ring is accommodated in the limiting groove.
6. The dual-channel-based rapid pressure-relief waterproof vent valve as claimed in claim 1, wherein the lifting plugging cover is provided with an external thread, and the connecting rod is provided with an internal thread matched with the external thread.
7. The dual channel-based rapid pressure relief, waterproof and breathable valve according to claim 1, wherein the pressure elastic member is of a spring structure.
8. The dual channel-based rapid pressure relief, waterproof and breathable valve according to claim 1, wherein the connecting rod is provided with an anti-drop blocking end.
9. The dual channel-based rapid pressure relief, waterproof and breathable valve according to claim 2, wherein the exposed portion of the valve body is a polygonal prism structure.
10. The dual channel-based rapid pressure relief, waterproof and breathable valve according to claim 9, wherein the exposed portion of the valve body is a hexagonal prism structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251666.2U CN215861920U (en) | 2021-09-15 | 2021-09-15 | Waterproof ventilation valve of quick pressure release based on binary channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251666.2U CN215861920U (en) | 2021-09-15 | 2021-09-15 | Waterproof ventilation valve of quick pressure release based on binary channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861920U true CN215861920U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122251666.2U Active CN215861920U (en) | 2021-09-15 | 2021-09-15 | Waterproof ventilation valve of quick pressure release based on binary channels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861920U (en) |
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2021
- 2021-09-15 CN CN202122251666.2U patent/CN215861920U/en active Active
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