CN110170127B - Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof - Google Patents
Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof Download PDFInfo
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- CN110170127B CN110170127B CN201910506584.2A CN201910506584A CN110170127B CN 110170127 B CN110170127 B CN 110170127B CN 201910506584 A CN201910506584 A CN 201910506584A CN 110170127 B CN110170127 B CN 110170127B
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- fire extinguishing
- battery pack
- fire
- extinguishing agent
- ignition device
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 60
- 239000007921 spray Substances 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000000443 aerosol Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000009295 sperm incapacitation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
Abstract
The invention discloses a microminiature fire extinguishing device of a rechargeable battery pack and a fire extinguishing method thereof, wherein the device comprises a cylinder body arranged between the side walls of all batteries in the battery pack and a cylinder cover positioned at one end of the cylinder body, a columnar fire extinguishing agent is arranged in the cylinder body, an ignition device is arranged at the end part of the columnar fire extinguishing agent, and a plurality of spray holes are formed in the surface of the cylinder body; in addition, the invention also provides a corresponding fire extinguishing method; the invention can ensure the fire extinguishing energy efficiency and the safety of the device on the premise of reducing the fire extinguishing device used for the rechargeable battery pack.
Description
Technical Field
The invention relates to the technical field of fire protection, in particular to a microminiature fire extinguishing device with a rechargeable battery pack and a fire extinguishing method thereof.
Background
The fire extinguishing device of the current rechargeable battery pack is generally arranged outside the battery pack, the fire extinguishing device sprays fire extinguishing agent when the battery burns, the battery pack is extinguished from the outside, and therefore fire extinguishing substances can hardly reach the inside of the battery pack due to the fact that the heat of a gap of the battery pack is large when the battery pack is extinguished, and the purpose of extinguishing fire can be achieved by restraining fire in a short period of time.
Because the rechargeable battery pack itself has a housing, whether the interior of the housing burns with heat or burns with smoldering is difficult to observe from the outside, in addition, the space inside the housing of the rechargeable battery pack is usually very narrow, and a fire extinguishing device on the market cannot be installed inside to protect the devices, and these small fires are often perceived by people after becoming big fires, but at this time, the battery pack is already seriously damaged, even the deflagration phenomenon directly occurs.
The direct use of the reduced volume of the fire extinguishing device in the rechargeable battery pack often also faces a plurality of problems, such as insufficient energy efficiency after the reduced volume, incapacitation of extinguishing fire, reduced temperature, or explosion danger caused by sudden pressure increase when the fire extinguisher is sprayed with smaller volume, so how to ensure the fire extinguishing energy efficiency and the device safety on the premise of reducing the use of the fire extinguishing device in the rechargeable battery pack is a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects and provide a microminiature fire extinguishing device of a rechargeable battery pack and a fire extinguishing method thereof, and the energy efficiency and the safety of the device are ensured on the premise of reducing the application of the fire extinguishing device to the rechargeable battery pack.
The invention aims to solve the technical problems, and adopts the technical scheme that: the miniature fire extinguishing device comprises a barrel arranged between the side walls of each battery in the battery pack and a barrel cover positioned at one end of the barrel, wherein a columnar fire extinguishing agent is arranged in the barrel, an ignition device is arranged at the end part of the columnar fire extinguishing agent, and a plurality of spray holes are formed in the surface of the barrel.
Preferably, the ignition device is of an electric ignition head structure, a fire point detection module is further arranged in the battery pack, and the fire point detection module is connected with a control end of the ignition device through a microprocessor.
Preferably, the fire detection module comprises a temperature sensor and/or a smoke sensor.
Preferably, the ignition device is of a fire-guiding rope structure, the cylinder body is detachably connected with the cylinder cover, and the columnar fire extinguishing agent is aerosol fire extinguishing agent.
Preferably, the battery pack includes an upper frame and a lower frame, and both ends of the battery are respectively mounted on the upper frame and the lower frame; limiting grooves are formed in the upper frame and the lower frame, limiting blocks are arranged on the outer side of the cylinder cover and the outer side of the cylinder body, and the limiting blocks are matched with the limiting grooves.
Preferably, the plurality of spray holes are linearly distributed on one side surface of the cylinder body, and the columnar fire extinguishing agent in the cylinder body blocks the spray holes.
Preferably, the plurality of spray holes are distributed in a straight line from one end close to the ignition device to one end far away from the ignition device, and the diameter of the spray holes is gradually reduced.
Preferably, the spray holes face the direction of gaps among the batteries.
Preferably, the cylinder body is a hollow cylinder structure with one end closed and the other end open, the diameter of the cylinder body is 5-20mm, and the height of the cylinder body is 20-60mm.
In addition, the invention also provides a fire extinguishing method of the fire extinguishing device, which comprises the following steps:
step 1): when a fire disaster occurs, a fire point detection module in the battery pack detects a fire point and transmits a signal to the microprocessor, and the microprocessor controls the ignition device to start and ignite the columnar fire extinguishing agent;
step 2): the columnar fire extinguishing agent is gradually ignited from the ignition end to the other end, and gradually releases the fire extinguishing agent;
step 3): the fire extinguishing agent is sprayed outwards from the spray hole close to the ignition device, and the spray hole blocked by the columnar fire extinguishing agent is gradually opened in the spraying process;
step 4): the fire extinguishing agent is sprayed outwards from the spray holes far away from the ignition device gradually, and the fire extinguishing agent is released to gaps among the batteries to extinguish the fire.
The invention has the beneficial effects that:
1. the volume of the fire extinguishing device is far smaller than that of the existing fire extinguishing device, the volume of the fire extinguishing device can be lower than 2000 cubic millimeters, the fire extinguishing device is conveniently installed inside a rechargeable battery pack, and the fire extinguishing energy efficiency and the device safety are guaranteed on the premise that the fire extinguishing device is used for the rechargeable battery pack.
2. The diameter of the spray hole from the end close to the ignition device to the end far away from the ignition device is smaller and smaller, when the ignition device ignites, the pressure in the cylinder is suddenly increased after the cylindrical fire extinguishing agent burns and gasifies on the surface layer close to the ignition device because the diameter of the spray hole is smaller, the diameter of the spray hole is larger when the diameter of the spray hole is smaller, and when the cylindrical fire extinguishing agent is gradually ignited, the combustion space in the cylinder is larger, and the spraying distance of the solid fire extinguishing agent is limited when the diameter of the spray hole is overlarge, so that the fire extinguishing effect is affected; the arrangement mode of the spray holes can simultaneously ensure the fire extinguishing energy efficiency and the device safety.
3. The fire extinguishing agent storage part is in a non-pressure state, and the non-pressure state is related to the pressure in the prior art, namely, the pressure difference between the inside and the outside of the fire extinguishing agent storage part is not available, even the pressure difference is negligible, the fire extinguishing agent storage part is beneficial to long-term storage of the fire extinguishing agent, and compared with the storage period of 12 to 24 months in the prior fire extinguishing device (in the pressure state), the fire extinguishing device (in the non-pressure state) is prolonged to more than 60 months.
4. The fire extinguishing agent is arranged in the cylinder body, so that a plurality of or all spray holes on the cylinder body are blocked when the fire extinguishing device is not started, the fire extinguishing agent is gradually reduced and the spray holes are gradually opened after the ignition device is started, the internal pressure of the device is ensured not to be suddenly increased, and the fire is continuously extinguished.
5. The cylinder body can be made of metal materials, so that the recycling is facilitated.
Drawings
Fig. 1 is a schematic view showing a state of use of a microminiature fire extinguishing apparatus with a rechargeable battery pack;
FIG. 2 is a schematic view of the structure of the fire extinguishing apparatus with the spray holes facing the gap direction between the batteries;
FIG. 3 is a schematic view of another structure of the fire extinguishing apparatus in which the spray holes face the gap direction between the batteries;
FIG. 4 is a schematic view of the fire extinguishing apparatus of FIG. 1;
FIG. 5 is a schematic view of the structure of the ignition device in the form of a fuse;
FIG. 6 is a schematic view of a structure in which a plurality of spray holes are linearly distributed on one side surface of a cylinder;
FIG. 7 is a schematic view of another structure in which a plurality of spray holes are linearly distributed on one side surface of the cylinder;
in the figure, a battery pack 1, a battery 1.1, an upper frame 1.2, a lower frame 1.3, a cylinder 2, a cylinder cover 3, a columnar fire extinguishing agent 4, an ignition device 5, a spray hole 6, a fire point detection module 7 and a limiting block 8.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 to 7, a microminiature fire extinguishing device of a rechargeable battery pack comprises a cylinder 2 arranged between the side walls of each battery 1.1 in the battery pack 1 and a cylinder cover 3 positioned at one end of the cylinder 2, wherein a columnar fire extinguishing agent 4 is arranged in the cylinder 2, an ignition device 5 is arranged at the end part of the columnar fire extinguishing agent 4, and a plurality of spray holes 6 are formed in the surface of the cylinder 2. The ignition device 5 may be provided at one end or both ends of the columnar fire extinguishing agent 4, and the ignition device 5 is provided only at one end of the columnar fire extinguishing agent 4 in this embodiment.
Preferably, the ignition device 5 is in an electric ignition head structure, a fire point detection module 7 is further arranged in the battery pack 1, and the fire point detection module 7 is connected with a control end of the ignition device 5 through a microprocessor.
Preferably, the fire detection module 7 comprises a temperature sensor and/or a smoke sensor. The temperature sensor can detect the temperature condition inside the battery pack 1, the smoke sensor can detect the condition of smoke generated inside the battery pack 1, if abnormality occurs, the temperature sensor and the smoke sensor can transmit signals to the microprocessor, and then the microprocessor can control the ignition device 5 to start, so as to ignite the columnar fire extinguishing agent 4, and the automatic fire extinguishing process is performed after the fire extinguishing agent is released. In this embodiment, the microprocessor may be a 51 single-chip microcomputer, with the model number of 80C51, or an STM32 microprocessor, with the model number of STM32F103.
In addition, preferably, the ignition device 5 can also adopt a fire-guiding rope structure, the cylinder body 2 is detachably connected with the cylinder cover 3, and the columnar fire extinguishing agent 4 is aerosol fire extinguishing agent. In this embodiment, the ignition device 5 adopts a fire-guiding rope structure (as shown in fig. 5), and then one end of the fire-guiding rope can be directly connected with the end of the columnar fire-extinguishing agent 4, and the other end of the fire-guiding rope is arranged outside the cylinder 2, so that the fire-guiding rope can be ignited when a fire occurs outside, and the columnar fire-extinguishing agent 4 can be ignited. In addition, as shown in fig. 4, the connection may be threaded, but the present embodiment is not limited to this connection, and may also be connected by other detachable connection manners, such as a pin.
Preferably, as shown in fig. 1, the battery pack 1 includes an upper frame 1.2 and a lower frame 1.3, and both ends of the battery 1.1 are mounted on the upper frame 1.2 and the lower frame 1.3, respectively; limiting grooves are formed in the upper frame 1.2 and the lower frame 1.3, limiting blocks 8 are arranged on the outer side of the cylinder cover 3 and the outer side of the cylinder body 2, and the limiting blocks 8 are matched with the limiting grooves. In this embodiment, the whole fire extinguishing apparatus can be installed in the limiting groove through the limiting block 8, and the upper frame 1.2 and the lower frame 1.3 limit the battery 1.1 and limit the internal fire extinguishing apparatus, so that the use is very convenient.
Preferably, the plurality of spray holes 6 are linearly distributed on one side surface of the cylinder 2, and the columnar fire extinguishing agent 4 in the cylinder 2 blocks the spray holes 6. In this embodiment, a plurality of spray holes 6 are provided on the surface of the cylinder 2, and the spray holes 6 can be uniformly distributed on the surface of the cylinder 2, so that a three-dimensional fire extinguishing process can be realized, but the fire extinguishing effect is not good under a three-dimensional structure due to small capacity of the fire extinguishing agent; in this embodiment, the spray holes 6 may be disposed on only one side of the cylinder 2, and the plurality of spray holes 6 are disposed on one side of one cylinder 2, which is a relatively reduced fire extinguishing area, so as to increase the fire extinguishing effect under the same fire extinguishing dosage; in this embodiment, the spraying holes 6 may be disposed on a straight line on one side of the cylinder 2 (as shown in fig. 6 and 7), so that the fire extinguishing area can be further reduced, and the fire extinguishing effect can be further increased under the condition of the same fire extinguishing dose.
Preferably, the plurality of injection holes 6 are linearly distributed from one end near the ignition device 5 to one end far from the ignition device 5, and gradually decrease in diameter (as shown in fig. 6). After such design, the diameter of the spray hole 6 is bigger and bigger from the end close to the ignition device 5 to the spray hole 6 far away from the ignition device 5, and the advantage of the arrangement is that when the ignition device 5 ignites, the cylindrical fire extinguishing agent 4 is in a small combustion space in the cylinder 2, the pressure in the cylinder 2 suddenly increases after the surface layer close to the ignition device 5 burns and gasifies, if the diameter of the spray hole 6 is small, the explosion risk is faced, so the diameter of the spray hole 6 is bigger from the ignition device 5, and when the cylindrical fire extinguishing agent 4 is gradually ignited, the combustion space in the cylinder 2 is bigger, and at the moment, the distance of spraying solid fire extinguishing agent is limited if the diameter of the spray hole 6 is too big, thereby influencing the fire extinguishing effect.
Preferably, the spray holes 6 face the direction of the gaps between the cells 1.1. As shown in fig. 2, the corresponding jet holes 6 are arranged on a straight line on one side surface of the cylinder 2, and the jet holes 6 face the direction of the gap between the two rows of batteries; as shown in fig. 3, the spray holes 6 are uniformly distributed on the surface of the cylinder 2, so that a three-dimensional fire extinguishing process is realized, and each spray hole 6 faces the direction of a gap between two batteries; the two designs are beneficial to the rapid dispersion of the fire extinguishing agent sprayed from the spray holes 6 among the batteries 1.1, so as to achieve the effect of rapid fire extinguishment.
Preferably, the cylinder 2 is a hollow cylinder structure with one end closed and the other end open, the diameter of the cylinder is 5-20mm, and the height of the cylinder is 20-60mm. The cylinder 2 of this size is well suited to be placed in a battery pack 1 having a very small space inside the casing.
In addition, the invention also provides a fire extinguishing method of the fire extinguishing device, which comprises the following steps:
step 1): when a fire disaster occurs, a fire point detection module 7 in the battery pack 1 detects the fire point and transmits a signal to a microprocessor, and the microprocessor controls an ignition device 5 to start and ignite a columnar fire extinguishing agent 4;
step 2): the columnar fire extinguishing agent 4 is gradually ignited from the ignition end towards the other end, and gradually releases the fire extinguishing agent;
step 3): the fire extinguishing agent is sprayed outwards from the spray hole 6 close to the ignition device 5, and the spray hole 6 blocked by the columnar fire extinguishing agent 4 is gradually opened in the spraying process;
step 4): the fire extinguishing agent is gradually sprayed outwards away from the spray holes 6 of the ignition device 5, and the fire extinguishing agent is released to gaps among the batteries 1.1 to extinguish the fire.
In the prior art, the fire extinguishing concentration of the aerosol can be 20g per 1 cube, the fire extinguishing device of the embodiment is reduced ten times (the diameter of the cylinder body 2 is 10mm, the height is 41 mm) in the same proportion, and the fire extinguishing concentration of at least 2g aerosol for extinguishing 0.1 cube is required.
The foregoing embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without collision. The protection scope of the present invention is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (6)
1. The fire extinguishing method of the microminiature fire extinguishing device of the rechargeable battery pack comprises a barrel (2) arranged between the side walls of each battery (1.1) in the battery pack (1) and a barrel cover (3) positioned at one end of the barrel (2), wherein a columnar fire extinguishing agent (4) is arranged in the barrel (2), an ignition device (5) is arranged at the end part of the columnar fire extinguishing agent (4), and a plurality of spray holes (6) are formed in the surface of the barrel (2); a plurality of spray holes (6) are linearly distributed on one side surface of the cylinder body (2), and the columnar fire extinguishing agent (4) in the cylinder body (2) blocks the spray holes (6); the spray holes (6) are distributed in a straight line from one end close to the ignition device (5) to one end far away from the ignition device (5), and the diameters of the spray holes are gradually reduced; the ignition device (5) is of an electric ignition head structure, a fire point detection module (7) is further arranged in the battery pack (1), and the fire point detection module (7) is connected with the control end of the ignition device (5) through a microprocessor; the columnar extinguishing agent (4) is aerosol extinguishing agent; the method is characterized in that: it comprises the following steps:
step 1): when a fire disaster occurs, a fire point detection module (7) in the battery pack (1) detects the fire point and transmits a signal to a microprocessor, and the microprocessor controls an ignition device (5) to start and ignite a columnar fire extinguishing agent (4);
step 2): the columnar fire extinguishing agent (4) is gradually ignited from the ignition end to the other end, and gradually releases the fire extinguishing agent;
step 3): the fire extinguishing agent is sprayed outwards from the spray hole (6) close to the ignition device (5), and the spray hole (6) blocked by the columnar fire extinguishing agent (4) is gradually opened in the spraying process;
step 4): the fire extinguishing agent is gradually sprayed outwards to the spray holes (6) far away from the ignition device (5), and the fire extinguishing agent is released to gaps among the batteries (1.1) to extinguish the fire.
2. The fire extinguishing method of a microminiature fire extinguishing apparatus with a rechargeable battery pack according to claim 1, wherein: the cylinder body (2) is detachably connected with the cylinder cover (3).
3. The fire extinguishing method of a microminiature fire extinguishing apparatus with a rechargeable battery pack according to claim 1, wherein: the fire detection module (7) comprises a temperature sensor and/or a smoke sensor.
4. The fire extinguishing method of a microminiature fire extinguishing apparatus with a rechargeable battery pack according to claim 1, wherein: the battery pack (1) comprises an upper frame (1.2) and a lower frame (1.3), and two ends of the battery (1.1) are respectively arranged on the upper frame (1.2) and the lower frame (1.3); limiting grooves are formed in the upper frame (1.2) and the lower frame (1.3), limiting blocks (8) are arranged on the outer side of the cylinder cover (3) and the outer side of the cylinder body (2), and the limiting blocks (8) are matched with the limiting grooves.
5. The fire extinguishing method of a microminiature fire extinguishing apparatus with a rechargeable battery pack according to claim 1, wherein: the spray holes (6) face the directions of gaps among the batteries (1.1).
6. The fire extinguishing method of a microminiature fire extinguishing apparatus with a rechargeable battery pack according to claim 1, wherein: the cylinder body (2) is of a hollow cylinder structure with one end closed and the other end open, the diameter of the cylinder body is 5-20mm, and the height of the cylinder body is 20-60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506584.2A CN110170127B (en) | 2019-06-12 | 2019-06-12 | Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506584.2A CN110170127B (en) | 2019-06-12 | 2019-06-12 | Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof |
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| Publication Number | Publication Date |
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| CN110170127A CN110170127A (en) | 2019-08-27 |
| CN110170127B true CN110170127B (en) | 2024-03-29 |
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| CN201910506584.2A Active CN110170127B (en) | 2019-06-12 | 2019-06-12 | Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof |
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| CN (1) | CN110170127B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743116A (en) * | 2019-10-08 | 2020-02-04 | 湖北及安盾消防科技有限公司 | Device capable of delaying spraying and continuously extinguishing fire and fire extinguishing method |
| CN110947128A (en) * | 2019-12-25 | 2020-04-03 | 湖北及安盾消防科技有限公司 | Hydrogel fire extinguishing agent preparation device |
| CN113509669B (en) * | 2020-04-10 | 2023-12-22 | 深圳市长科安全应急科技有限公司 | fire extinguishing device |
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| CN110170127A (en) | 2019-08-27 |
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