CN218827677U - Novel explosion-proof balanced valve of battery system - Google Patents
Novel explosion-proof balanced valve of battery system Download PDFInfo
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- CN218827677U CN218827677U CN202222846391.1U CN202222846391U CN218827677U CN 218827677 U CN218827677 U CN 218827677U CN 202222846391 U CN202222846391 U CN 202222846391U CN 218827677 U CN218827677 U CN 218827677U
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- battery system
- valve body
- ventilated membrane
- valve
- balanced valve
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of the balanced valve, a novel explosion-proof balanced valve of battery system is related to, including valve body, ventilated membrane and backplate, valve body one side is passed through the ventilated membrane is connected with the casing, the opposite side with the backplate is connected, the ventilated membrane with the valve body the backplate encloses into the cavity, the cavity is equipped with the exhaust hole, the ventilated membrane the exhaust hole with the cavity intercommunication to form ventilative passageway. The utility model has the advantages that: the ventilation channel is arranged, so that gas exchange between the interior of the battery system and the outside can be realized, and meanwhile, when the battery system is out of control due to heat, the danger of fire and explosion caused by the fact that external combustible gas is ignited by high-temperature solid particles discharged during thermal runaway can be effectively avoided; the baffle and the spring are arranged, so that the battery system can still be ensured to be sealed when the exhaust is stopped, and external water and oxygen can be prevented from entering the battery system to ensure the safety of the battery system.
Description
Technical Field
The utility model belongs to the technical field of the balanced valve, especially, relate to a novel explosion-proof balanced valve of battery system.
Background
In recent years, market demands for electric vehicles, energy storage systems, unmanned aerial vehicles, and the like are continuously expanding. The lithium battery has the advantages of small volume, high energy density, environmental protection and the like, and the installed scale accounts for the highest proportion in the field of energy storage. With the rapid development of high-power lithium batteries in various enterprises, the safety problem of the batteries is also concerned widely. When the individual battery of the lithium battery system has defects or the design of the battery system has defects, the problem of violent heat generation due to the failure of the individual battery can occur, a chain exothermic reaction is easily caused in the battery system, thermal runaway is caused, a large amount of high-temperature combustible gas and solid particles are generated, the combustible gas can be ignited by the high-temperature solid particles brought out in the exhaust process, and safety accidents such as fire and even explosion outside the battery system are caused. When thermal runaway happens, the traditional explosion-proof valve can quickly release pressure, the integrity of a shell structure of a battery system is guaranteed, but high-temperature particles brought out when exhaust cannot be blocked to ignite external combustible gas, and meanwhile, the sealing of an exhaust interval system cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a novel explosion-proof balanced valve of battery system can rapid relief pressure, guarantees battery system shell structure's integrality, and the high temperature granule that can also take out when the separation is discharged ignites outside combustible gas, guarantees the good sealed of exhaust interval system simultaneously.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a novel explosion-proof balanced valve of battery system, can be connected with battery system's casing, its characterized in that: including valve body, ventilated membrane and backplate, valve body one side is passed through the ventilated membrane with the casing is connected, the opposite side with the backplate is connected, the ventilated membrane with the valve body the backplate encloses into the cavity for storage granule jet, the cavity is equipped with the exhaust hole, the ventilated membrane the exhaust hole with the cavity intercommunication is in order to form ventilative passageway.
Furthermore, a first plastic part is arranged between the shell and the breathable film, and a first air hole is formed in the first plastic part.
Furthermore, a second plastic part is arranged between the air-permeable membrane and the valve body, and a second air hole is formed in the second plastic part.
Furthermore, the first air hole and the second air hole are communicated with the air passage.
Furthermore, a sealing ring is arranged between the shell and the second plastic part.
Furthermore, a baffle plate is arranged between the valve body and the back plate, and a second air hole is formed in the baffle plate.
Further, the second air hole is communicated with the air passage.
Furthermore, a support ring is arranged between the valve body and the baffle plate.
Furthermore, a spring is arranged between the baffle and the back plate.
Furthermore, the exhaust holes are positioned on the valve body, and the number of the exhaust holes is at least two.
By adopting the technical scheme, the breathable film and the plastic parts on the two sides of the breathable film are arranged, so that the better dustproof, waterproof and breathable functions of the battery system can be realized; the ventilation channel is arranged, so that gas exchange between the interior of the battery system and the outside can be realized, and meanwhile, when the battery system is out of control due to heat, the danger of fire and explosion caused by the fact that external combustible gas is ignited by high-temperature solid particles discharged during thermal runaway can be effectively avoided; set up baffle and spring, can make high temperature solid particle cool down rapidly when triggering thermal runaway to still can guarantee battery system seal when stopping the exhaust and prevent that outside water and oxygen from getting into and guarantee system safety. This design simple structure, when thermal runaway blasting pressure release appears in battery system, can effectively prevent high temperature solid particle contact outside air, avoid the outside explosion that fires of battery system.
Drawings
Fig. 1 is an exploded view of an embodiment provided by the present invention;
fig. 2 is a perspective view of an embodiment of the present invention.
In the figure:
1. a valve body; 100. an exhaust hole; 2. a gas permeable membrane; 3. a back plate; 4. a first plastic part; 5. a second plastic part; 6. a seal ring; 7. a baffle plate; 8. a support ring; 9. a spring; 10. and (7) sealing the glue.
Detailed Description
The invention will be further described with reference to the following examples and drawings:
the utility model adopts the technical proposal that: as shown in fig. 1, a novel explosion-proof balance valve for a battery system can be connected with a housing of the battery system, and is characterized in that: including valve body 1, ventilated membrane 2 and backplate 3, valve body 1 one side is passed through ventilated membrane 2 and is connected with the casing, and the opposite side is connected with backplate 3, and ventilated membrane 2 encloses into the cavity with valve body 1, backplate 3, and the cavity is equipped with exhaust hole 100, ventilated membrane 2, exhaust hole 100 and cavity intercommunication to form ventilative passageway.
In this embodiment, the valve body 1 is provided with four threaded holes, the connection between the balance valve and the housing is realized through the threaded holes, the gas permeable membrane 3 is used for dust prevention, water prevention and gas permeation, when the battery system works normally, gas enters the cavity through the gas permeable membrane 3 and can pass through the gas vent hole 100, so that the gas exchange between the inside of the battery system and the outside is realized, and the waterproof, dustproof and gas permeation functions are completed; when the battery system causes the internal thermal runaway of the battery system under the influence of external conditions such as overcharge, discharge and collision, the breathable film 2 explodes and fails, high-temperature gas is rapidly discharged through the exhaust holes 100 on the side surface of the valve body 1, so that the battery system is rapidly decompressed, meanwhile, high-temperature solid particles with large inertia enter the cavity, and are rapidly cooled at the rear part in the cavity, and finally, the aim of effectively preventing the external fire and explosion of the battery system is fulfilled.
Preferably, a first plastic part 4 is arranged between the shell and the breathable film 2, and a first air hole is formed in the first plastic part 4. In this embodiment, first plastic part 4 and 5 equal parts of second plastic part adopt thermoplastic material, melt the inefficacy during high temperature, set up the plastic part and be used for supporting and protecting ventilated membrane 2, are equipped with the bleeder vent on the plastic part, guarantee that gas passes through ventilation channel smoothly to realize the gas exchange function.
Preferably, a second plastic part 5 is arranged between the air permeable membrane 2 and the valve body 1, and a second air hole is formed in the second plastic part 5. In this embodiment, the bilateral symmetry of ventilated membrane 2 is equipped with the plastic part, and during processing, the plastic part of both sides is fixed, is sealed solid along with ventilated membrane 2 together encapsulating and valve body 1, guarantees the good sealed of structure.
Preferably, the first air hole and the second air hole are communicated with the air passage. It should be noted that, the utility model provides a hole site and the size of first bleeder vent, second bleeder vent need be synthesized and are considered factor such as intensity, ventilation rate and battery system inner space operating temperature and external environment of ventilated membrane 2, and the user can be according to the nimble adjustment of practical application, does not specifically prescribe a limit to here.
Preferably, a sealing ring 6 is arranged between the shell and the second plastic part 5. In this embodiment, when fixing this balanced valve to the battery system casing, sealing washer 6 compresses into the recess of valve body 1 in, and is sealed with sealed glue simultaneously and really, realizes the good sealed between balanced valve and battery system casing.
Preferably, a baffle 7 is arranged between the valve body 1 and the back plate 3, and a second air hole is formed in the baffle 7.
Preferably, the second vent is communicated with the vent channel.
Preferably, a support ring 8 is arranged between the valve body 1 and the baffle 7. The support ring 8 is arranged to provide stable support for the baffle 7, and in the embodiment, the support ring 8 is made of paraffin wax material and melts and releases the baffle 7 at high temperature.
Preferably, a spring 9 is arranged between the baffle 7 and the back plate 3. When the air flow in the cavity is large, the force of the air flow to the baffle 7 is larger than the force of the spring 9 to the baffle 7, the baffle 7 moves towards the direction of the back plate 3, and the second air hole is large at the moment; when the air flow in the cavity is small, the force of the air flow to the baffle 7 is smaller than the force of the spring 9 to the baffle 7, the baffle 7 displaces towards the valve body 1, and the second air hole is opened slightly at the moment. In addition, when the battery system stops exhausting, the pressure values on the two sides of the baffle 7 are equal, and the second air holes are closed, so that the danger caused by pouring external water or oxygen into the battery system is prevented, the product quality is improved, and the safety of the battery system is guaranteed.
Preferably, the exhaust holes 100 are located on the valve body 1, and the number thereof is at least two. In this embodiment, the lateral wall symmetry of valve body 1 is equipped with four exhaust holes 100, the utility model discloses do not specifically limit exhaust hole 100's position, size, as long as can realize the same function can.
When the balance valve is used, the balance valve is fixed on a shell of a battery system through the threaded hole, one side of the breathable film 2 is connected with the shell, when the battery system works normally, gas enters the cavity through the breathable film 2 and is discharged from the vent hole 100, and the gas circulates in the breathable channel, so that gas exchange between the interior of the battery system and the outside is realized, and a better dustproof, waterproof and breathable function is ensured; when battery system because of overcharging, when external conditions such as collision caused the inside thermal runaway of battery system under the influence, ventilated membrane 2 and plastic part blasting inefficacy, high-temperature gas discharges through exhaust hole 100 of 1 side of valve body, battery system realizes quick pressure release, support ring 8 release baffle 7 simultaneously, the great high temperature solid particle of inertia gets into the cavity, baffle 7 is towards 3 direction displacements of backplate simultaneously, make the second bleeder vent grow, high temperature solid particle begins to cool down rapidly, the final purpose that effectively prevents the outside explosion on fire of battery system that realizes.
The first embodiment is as follows:
the utility model provides a novel explosion-proof balanced valve of battery system, can be connected its characterized in that with battery system's casing: including valve body 1, ventilated membrane 2 and backplate 3, valve body 1 one side is passed through ventilated membrane 2 and is connected with the casing, and the opposite side is connected with backplate 3, and ventilated membrane 2 encloses into the cavity with valve body 1, backplate 3, and the cavity is equipped with exhaust hole 100, ventilated membrane 2, exhaust hole 100 and cavity intercommunication to form ventilative passageway.
A first plastic part 4 is arranged between the shell and the ventilated membrane 2, and a first air hole is arranged on the first plastic part 4.
A second plastic part 5 is arranged between the ventilated membrane 2 and the valve body 1, and a second air hole is arranged on the second plastic part 5.
The first air hole and the second air hole are communicated with the air passage.
A sealing ring 6 is arranged between the shell and the second plastic part 5.
A baffle 7 is arranged between the valve body 1 and the back plate 3, and a second air hole is arranged on the baffle 7.
The second air hole is communicated with the air passage.
A support ring 8 is arranged between the valve body 1 and the baffle 7.
A spring 9 is arranged between the baffle 7 and the back plate 3.
The exhaust holes 11 are located on the side wall of the valve body 1, and the number of the exhaust holes is at least two.
By adopting the technical scheme, the breathable film and the plastic parts on the two sides of the breathable film are arranged, so that the better dustproof, waterproof and breathable functions of the battery system can be realized; the ventilation channel is arranged, so that gas exchange between the interior of the battery system and the outside can be realized, and meanwhile, when the battery system is out of control due to heat, the danger of fire and explosion caused by the fact that external combustible gas is ignited by high-temperature solid particles discharged during thermal runaway can be effectively avoided; set up baffle and spring, can make high temperature solid particle cool down rapidly when triggering thermal runaway to still can guarantee when stopping the exhaust that battery system is sealed prevents that outside water and oxygen from getting into and guarantee system safety. This design simple structure, when thermal runaway blasting pressure release appears in battery system, can effectively prevent high temperature solid particle contact outside air, avoid the outside explosion that fires of battery system.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. The utility model provides a novel explosion-proof balanced valve of battery system, can be connected with battery system's casing, its characterized in that: the air-permeable valve comprises a valve body, a breathable film and a back plate, wherein one side of the valve body is connected with the shell through the breathable film, the other side of the valve body is connected with the back plate, the breathable film and the valve body and the back plate enclose a cavity, the cavity is provided with an exhaust hole, and the breathable film, the exhaust hole and the cavity are communicated to form a breathable channel.
2. The novel explosion-proof balanced valve of battery system of claim 1, characterized in that: the shell and be equipped with first plastic part between the ventilated membrane, be equipped with first bleeder vent on the first plastic part.
3. The novel explosion-proof balanced valve of battery system of claim 2, characterized in that: the ventilated membrane with be equipped with the second plastic part between the valve body, be equipped with the second bleeder vent on the second plastic part.
4. The novel explosion-proof balanced valve of battery system of claim 3, characterized in that: the first air hole and the second air hole are communicated with the air passage.
5. The novel explosion-proof balanced valve of battery system of claim 3, characterized in that: and a sealing ring is arranged between the shell and the second plastic part.
6. The novel explosion-proof balanced valve of battery system of claim 1, characterized in that: a baffle is arranged between the valve body and the back plate, and second air holes are formed in the baffle.
7. The novel explosion-proof balanced valve of battery system of claim 6, characterized in that: the second air hole is communicated with the air passage.
8. The novel explosion-proof balanced valve of battery system of claim 6, characterized in that: and a support ring is arranged between the valve body and the baffle.
9. The novel explosion-proof balanced valve of battery system of claim 6, characterized in that: and a spring is arranged between the baffle and the back plate.
10. The novel explosion-proof balanced valve of battery system of claim 1, characterized in that: the exhaust hole is located on the valve body, and the number of the exhaust holes is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222846391.1U CN218827677U (en) | 2022-10-27 | 2022-10-27 | Novel explosion-proof balanced valve of battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222846391.1U CN218827677U (en) | 2022-10-27 | 2022-10-27 | Novel explosion-proof balanced valve of battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218827677U true CN218827677U (en) | 2023-04-07 |
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ID=87042463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222846391.1U Active CN218827677U (en) | 2022-10-27 | 2022-10-27 | Novel explosion-proof balanced valve of battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218827677U (en) |
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2022
- 2022-10-27 CN CN202222846391.1U patent/CN218827677U/en active Active
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