CN221014255U - Immersed spraying mixing fire-fighting device for battery - Google Patents
Immersed spraying mixing fire-fighting device for battery Download PDFInfo
- Publication number
- CN221014255U CN221014255U CN202320587187.4U CN202320587187U CN221014255U CN 221014255 U CN221014255 U CN 221014255U CN 202320587187 U CN202320587187 U CN 202320587187U CN 221014255 U CN221014255 U CN 221014255U
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- Prior art keywords
- cavity structure
- explosion
- battery
- proof valve
- fire extinguishing
- Prior art date
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- 238000005507 spraying Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical group FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 238000002791 soaking Methods 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 12
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical class CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 6
- 239000000443 aerosol Substances 0.000 description 5
- 230000001603 reducing effect Effects 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 4
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012983 electrochemical energy storage Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 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
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The technical scheme adopted by the utility model is as follows: a battery is with submerging and spraying the mixed fire control unit, including battery body and airtight cavity structure; the battery body is arranged in the cavity structure; one side of the cavity structure is provided with an inlet pipe for inflow of liquid fire extinguishing medium; the top of the cavity structure is provided with a closed storage cavity; the storage cavity is internally provided with a fire extinguishing agent; the storage cavity is positioned right above an explosion-proof valve of the battery body, and the explosion-proof valve is positioned on the top surface of the battery body; the bottom surface of the storage cavity is matched with a gas injection path of the explosion-proof valve; when the battery body is in thermal runaway, the gas sprayed by the explosion-proof valve breaks through the bottom surface of the corresponding storage cavity, and the fire extinguishing medium enters the cavity structure from the inlet pipe. The utility model combines spraying and soaking, and has reliable effect in isolating oxygen, lowering temperature and other aspects.
Description
Technical Field
The utility model belongs to the technical field of battery fire protection, and particularly relates to a submerged spraying mixed fire protection device for a battery.
Background
Electrochemical energy storage power stations are a relatively common class of energy storage power stations. Along with the construction and application of the energy storage power station project, the fire hazard of the energy storage power station project is gradually revealed. Therefore, each large manufacturer is equipped with a fire extinguishing system. At present, common fire extinguishing inhibition media for a fire extinguishing system of an electrochemical energy storage power station comprise: perfluorohexanone, heptafluoropropane, aerosols, and the like.
The heptafluoropropane belongs to the gas state and needs to be subjected to high-pressure treatment and stored in a high-pressure steel cylinder in a liquid state, and the heptafluoropropane needs to maintain a certain concentration to have the ability of extinguishing a fire and continuously inhibiting the fire.
The disadvantage of aerosol as fire extinguishing medium is also obvious, and after the system is triggered, the aerosol releases a great amount of heat, and although the aerosol has a certain fire extinguishing capability, the temperature reducing effect is poor and can not be continuously restrained.
The perfluoro-hexanone is superior to heptafluoropropane and aerosol in storage, cooling and fire extinguishing effects, environmental protection and the like, but for a lithium battery pack which is out of control, internal reaction of the battery cannot be immediately prevented, and the ability of fire extinguishing and continuous inhibition can be achieved only by reaching and maintaining a certain concentration, and the perfluoro-hexanone generates toxic and harmful corrosive hydrofluoric acid through thermal cracking at the high temperature of more than 550 ℃. Meanwhile, for the lithium battery pack which is out of control, the perfluorinated hexanone cannot immediately prevent the internal reaction of the battery, cannot completely isolate oxygen, and cannot cool the battery.
In summary, the battery fire-fighting requirements of the existing energy storage power station cannot be met by adopting a single fire-extinguishing inhibition medium or method.
Disclosure of utility model
The utility model aims to solve the defects in the prior art, and provides the immersed spraying mixed fire-fighting device for the battery, which combines spraying and soaking, and has reliable effect in the aspects of isolating oxygen, reducing temperature and the like.
The technical scheme adopted by the utility model is as follows: a battery is with submerging and spraying the mixed fire control unit, including battery body and airtight cavity structure; the battery body is arranged in the cavity structure; one side of the cavity structure is provided with an inlet pipe for inflow of liquid fire extinguishing medium; the top of the cavity structure is provided with a closed storage cavity; the storage cavity is internally provided with a fire extinguishing agent; the storage cavity is positioned right above an explosion-proof valve of the battery body, and the explosion-proof valve is positioned on the top surface of the battery body; the bottom surface of the storage cavity is matched with a gas injection path of the explosion-proof valve; when the battery body is in thermal runaway, the gas sprayed by the explosion-proof valve breaks through the bottom surface of the corresponding storage cavity, and the fire extinguishing medium enters the cavity structure from the inlet pipe.
In the above technical scheme, the cavity structure comprises an upper cover and a lower cover; the bottom edge of the upper cover is fixedly connected with the top edge of the lower cover, and the upper cover and the lower cover are matched with each other to form a closed cavity structure.
In the technical scheme, the inlet pipe is arranged at one side of the lower cover, one end of the inlet pipe is communicated with the inside of the cavity structure, and the other end of the inlet pipe is communicated with the storage place of the fire extinguishing medium; the inlet pipe is provided with a driving device for driving the extinguishing medium to flow towards the cavity structure.
In the above technical scheme, the top surface of the storage cavity is fixedly connected with the upper cover.
In the technical scheme, the upper surface of the bottom plate of the storage cavity is provided with a wedge-shaped weak part; the weak points are distributed above the explosion-proof valve.
In the technical scheme, the cavity structure is provided with the wire hole; the pole of the battery body is electrically connected with a lead; the wires extend through the wire holes to the outside of the cavity structure.
In the technical scheme, the bottom surface of the explosion-proof valve is provided with a weak area.
In the technical scheme, the top surface of the explosion-proof valve is attached with a layer of protective film.
In the technical scheme, the fire extinguishing agent is perfluoro-hexanone.
In the technical scheme, the fire extinguishing medium is a liquid mixture of water and glycol.
The beneficial effects of the utility model are as follows: the utility model combines two fire-fighting modes of spraying the fire extinguishing agent and soaking the battery by adopting the fire extinguishing medium, thereby effectively isolating oxygen and reducing the temperature when the battery is out of control thermally, and the fire extinguishing effect is obvious and reliable. The battery body explosion-proof valve provided by the utility model directly sprays the fire extinguishing agent storage area along the situation when spraying, and can act at the first time of battery ignition without an electric signal, thereby achieving the early discovery effect. The fire extinguishing agent of the utility model is perfluoro-hexanone. The fire extinguishing medium is a liquid mixture of water and glycol. Spraying perfluorinated hexanone can play a role in extinguishing flame when the electric core is out of control, and the injected liquid extinguishing medium can play a role in cooling and isolating oxygen, so that the two modes are combined with each other to achieve the best effect. The utility model sends the driving signal through the electric signal, such as BMS which can monitor the voltage and the temperature of the battery in real time, triggers the driving device of the fire extinguishing medium, uses the mixture of perfluoro-hexanone, glycol and water to act in the early stage and act in the later stage, and has better effect because the two mediums have advantages and disadvantages respectively and combine the advantages of the two mediums. The explosion-proof valve and the fire extinguishing agent storage cavity are both provided with the weak areas, so that the gas sprayed by the explosion-proof valve can conveniently puncture the storage cavity and timely release the fire extinguishing agent, and the safety of equipment is enhanced. The explosion-proof valve provided by the utility model is provided with the protective film, so that the waterproof and dust-proof effects are effectively achieved, and the safety of equipment is further provided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a partial schematic view of the present utility model;
fig. 3 is a schematic view of a battery body according to an embodiment.
Wherein, 1-battery body, 11-explosion-proof valve, 12-weak area, 13-protective film; 2-cavity structure; 21-upper cover, 22-lower cover and 23-line hole; 3-storage chamber, 31-weak place; 4-fire extinguishing medium storage place, 5-inlet pipe, 6-driving device, 7-wire and 8-pole.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and specific examples, which are given for clarity of understanding and are not to be construed as limiting the utility model.
As shown in fig. 1, the utility model provides a submerged spraying mixed fire-fighting device for a battery, which comprises a battery body 1 and a closed cavity structure 2; the battery body 1 is arranged in the cavity structure 2; one side of the cavity structure 2 is provided with an inlet pipe 5 for inflow of liquid extinguishing medium; the top of the inside of the cavity structure 2 is provided with a closed storage cavity 3; the storage cavity 3 is internally provided with a fire extinguishing agent; the storage cavity 3 is positioned right above the explosion-proof valve 11 of the battery body 1, and the explosion-proof valve 11 is positioned on the top surface of the battery body 1; the bottom surface of the storage cavity 3 is matched with a gas injection path of the explosion-proof valve 11; when thermal runaway occurs in the battery body 1, the gas ejected from the explosion-proof valve 11 breaks through the bottom surface of the corresponding storage chamber 3, and the fire extinguishing medium enters the inside of the chamber structure 2 from the inlet pipe 5.
Specifically, the cavity structure 2 includes an upper cover 21 and a lower cover 22; the bottom edge of the upper cover 21 is fixedly connected with the top edge of the lower cover 22, and the bottom edge and the top edge of the lower cover are matched with each other to form a closed cavity structure 2. As shown in fig. 1, the upper cover 21 is a cavity opened downward, the lower cover 22 is a cavity opened upward, and the bottom edges of the upper cover 21 and the top edges of the lower cover 22 respectively extend outward and are matched with each other. Depending on the specific application scenario, the fixed connection between the upper cover 21 and the lower cover 22 may be achieved by means of thermoplastic or the like.
Specifically, the inlet pipe 5 is arranged at one side of the lower cover 22, one end of the inlet pipe 5 is communicated with the interior of the cavity structure 2, and the other end of the inlet pipe is communicated with the fire extinguishing medium storage place 4; the inlet pipe 5 is provided with drive means for driving the flow of extinguishing medium to the chamber structure 2. As shown in fig. 1, the driving means may be a driving means 6. The extinguishing medium storing place 4 may be a conventional liquid container, the extinguishing medium storing place 4 is in communication with the cavity structure 2 through the inlet pipe 5, and the driving device 6 is electrically connected with the BMS. The BMS can receive the voltage signal and the temperature signal of the battery body 1 in real time. When the BMS determines that the received voltage signal or temperature signal of the battery body 1 exceeds a set threshold value, it transmits a driving signal to the driving device 6, and the driving device 6 operates to allow the fire extinguishing medium to enter the inside of the cavity structure 2 from the fire extinguishing medium storage place 4 through the inlet pipe 5. The fire extinguishing medium can completely prevent oxygen from contacting the battery, and simultaneously has the function of reducing the temperature of the battery cell, so that various effects are realized for extinguishing fire.
Specifically, the top surface of the storage chamber 3 is fixedly connected with the upper cover 21. As shown in fig. 2, the top surface of the storage chamber 3 is tightly attached to the lower surface of the top plate of the upper cover 21, so that effective fixation is realized, and the stability of equipment connection is ensured.
Specifically, the upper surface of the bottom plate of the storage cavity 3 is provided with a wedge-shaped weak point 31; the weakness 31 is distributed over the explosion proof valve 11. As shown in fig. 2, the storage chamber 3 may be provided as an aluminum space, and the weak points 31 are provided in a plurality and are disposed opposite to the explosion-proof valve 11 of the battery body 1. The thickness of the weakness 31 is 0.3-0.5mm. The bottom surface of the explosion valve 11 is provided with a weakened area 12. The explosion-proof valve 11 is made of aluminum foil material, has the thickness of 0.5-0.7mm, and the weak area 12 has the thickness of 0.2mm and can be arranged in a plurality of the explosion-proof valves.
Specifically, a protective film 13 is attached to the top surface of the explosion-proof valve 11. The protective film 13 can be a PET film, and effectively plays a role in preventing water and dust.
Specifically, as shown in fig. 1, the cavity structure 2 is provided with a wire hole 23; the pole 8 of the battery body 1 is electrically connected with a lead 7; the lead 7 extends to the outside of the cavity structure 2 through the wire hole 23, thereby ensuring that the battery body 1 can normally realize the charge and discharge functions. The wire hole 23 only allows the wire 7 to pass through, and the wire 7 is tightly contacted with the inner wall of the wire hole 23, so that the cavity structure 2 is ensured to be in a closed state.
Specifically, the fire extinguishing agent is perfluoro-hexanone. When the battery body 1 is in thermal runaway, the weak part 31 of the storage cavity 3 is broken through by gas sprayed by the explosion-proof valve 11, and then the perfluorinated hexanone is sprayed out, so that the sprayed perfluorinated hexanone can quickly inhibit the ignition of the battery core.
Specifically, the fire extinguishing medium is a liquid mixture of water and glycol. The proportion of water is 70% -90%, the proportion of glycol is 10% -30%, the glycol is anti-icing, and the water can isolate oxygen of the battery cell and help the battery cell to cool.
The application process of the utility model is as follows:
When the battery body 1 works normally, power is supplied to a load located outside the cavity structure 2 through the pole 8 and the lead 7, and the battery system BMS monitors the voltage and the temperature of the battery body 1 in real time. The fire extinguishing agent is sealed in the storage cavity 3, the fire extinguishing medium is stored in the fire extinguishing medium storage place, the driving device 6 does not work, and the fire extinguishing agent or the fire extinguishing medium does not exist in the cavity structure 2.
When thermal runaway of the battery body 1 occurs, the explosion-proof valve 11 is first injected. The gas injected from the explosion-proof valve 11 breaks the weak portion 31 of the storage chamber 3. After that, the perfluorohexanone is discharged, and the discharged perfluorohexanone promptly suppresses ignition of the battery body 1. However, for the lithium battery pack which is out of control, the perfluorinated hexanone cannot immediately prevent the internal reaction of the battery, cannot completely isolate oxygen, and cannot cool the battery.
Due to the hysteresis of the electrical signal, the battery system BMS determines that the received voltage signal and temperature signal of the battery body 1 exceeds a set threshold value after the explosion-proof valve 11 is ejected, and then transmits a driving signal to the driving device 6. The drive means 6 are operated to bring the extinguishing medium from the extinguishing medium storage 4 through the inlet pipe 5 into the interior of the chamber structure 2.
Therefore, after the perfluorinated hexanone is sprayed, the liquid fire extinguishing medium is injected into the battery box. Because the fire extinguishing medium needs a certain time to be injected into the full tank body, the perfluorinated hexanone can also keep the flame suppression during the injection. After the injection of the liquid fire extinguishing medium is completed, the whole battery body 1 is soaked in the liquid fire extinguishing medium, the liquid fire extinguishing medium can completely prevent oxygen from contacting with the battery, and meanwhile, the effect of reducing the temperature of the battery cell is achieved, and various effects are realized.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (8)
1. The utility model provides a battery is with submerging spraying mix fire control unit which characterized in that: comprises a battery body and a closed cavity structure; the battery body is arranged in the cavity structure; one side of the cavity structure is provided with an inlet pipe for inflow of liquid fire extinguishing medium; the top of the cavity structure is provided with a closed storage cavity; the storage cavity is internally provided with a fire extinguishing agent; the storage cavity is positioned right above an explosion-proof valve of the battery body, and the explosion-proof valve is positioned on the top surface of the battery body; the bottom surface of the storage cavity is matched with a gas injection path of the explosion-proof valve; when the battery body is in thermal runaway, the gas sprayed by the explosion-proof valve breaks through the bottom surface of the corresponding storage cavity, and the fire extinguishing medium enters the cavity structure from the inlet pipe; the inlet pipe is arranged at one side of the lower cover, one end of the inlet pipe is communicated with the inside of the cavity structure, and the other end of the inlet pipe is communicated with the storage place of the fire extinguishing medium; the inlet pipe is provided with a driving device for driving the extinguishing medium to flow towards the cavity structure.
2. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the cavity structure comprises an upper cover and a lower cover; the bottom edge of the upper cover is fixedly connected with the top edge of the lower cover, and the upper cover and the lower cover are matched with each other to form a closed cavity structure.
3. The submerged spraying hybrid fire fighting device for a battery according to claim 2, wherein: the top surface of the storage cavity is fixedly connected with the upper cover.
4. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the upper surface of the bottom plate of the storage cavity is provided with a wedge-shaped weak part; the weak points are distributed above the explosion-proof valve.
5. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the cavity structure is provided with a wire hole; the pole of the battery body is electrically connected with a lead; the wires extend through the wire holes to the outside of the cavity structure.
6. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the bottom surface of the explosion-proof valve is provided with a weak area.
7. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the top surface of the explosion-proof valve is attached with a layer of protective film.
8. The submerged spraying hybrid fire fighting device for a battery according to claim 1, wherein: the fire extinguishing agent is perfluoro-hexanone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587187.4U CN221014255U (en) | 2023-03-23 | 2023-03-23 | Immersed spraying mixing fire-fighting device for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587187.4U CN221014255U (en) | 2023-03-23 | 2023-03-23 | Immersed spraying mixing fire-fighting device for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221014255U true CN221014255U (en) | 2024-05-28 |
Family
ID=91131991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320587187.4U Active CN221014255U (en) | 2023-03-23 | 2023-03-23 | Immersed spraying mixing fire-fighting device for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221014255U (en) |
-
2023
- 2023-03-23 CN CN202320587187.4U patent/CN221014255U/en active Active
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