Experimental device for restraining and extinguishing lithium ion battery fire through cooperation of perfluorohexanone and water mist
Through the synergistic effect of perfluorohexanone and fine water mist, the problem of low fire extinguishing efficiency of lithium-ion battery fires is solved, efficient fire extinguishing and flue gas purification are achieved, and scientific basis for the safety prevention and control of lithium-ion battery fires is provided.
Patent Information
- Application Number
- CN202422371414.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the prior art, when fine water mist is used as a water-based fire extinguishing agent, its fire extinguishing mechanism is mainly based on oxygen isolation suffocation and cooling, resulting in low fire extinguishing efficiency of lithium-ion batteries and inability to extinguish fire in a timely and effective manner.
The synergistic effect of perfluorohexanone and fine water mist is adopted to generate flames through the heating plate, and the flame propagation is used to interrupt the flame propagation, reduce the generation of free radicals, and spray fine water mist through the nozzle to cool the battery to prevent reignition, and combine with the fan to purify the flue gas to achieve efficient fire extinguishing.
The synergistic effect of perfluorohexanone and fine water mist can effectively interrupt flame propagation, reduce free radical generation, cool the battery, prevent rekindling, achieve efficient fire extinguishing, and purify the smoke to protect the health of experimental personnel.
Smart Images
Figure CN223233172U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire experiments, in particular to an experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist. Background Art
[0002] Lithium-ion batteries are a widely used rechargeable battery, favored for their high energy density, long cycle life, and low self-discharge rate. When an external power source applies voltage during the charging process, lithium ions migrate from the positive electrode to the negative electrode and become embedded in the anode material. Under load, lithium ions are released from the negative electrode, return to the positive electrode, and flow through the electrolyte, generating an electric current. Compared to traditional batteries, lithium-ion batteries can store more energy. Under appropriate charge and discharge conditions, they can withstand thousands of charge and discharge cycles. Even when not in use, energy loss is minimal. They are widely used in devices such as mobile phones, laptops, and tablets. They are the primary power source for electric vehicles and hybrid vehicles. Despite their many advantages, lithium-ion batteries can also pose safety risks under certain conditions. Overheating of lithium-ion batteries can cause the battery to swell or catch fire.
[0003] After lithium-ion batteries are produced, they are generally required to undergo fire extinguishing tests to provide a scientific basis for the safety prevention and control of lithium-ion battery fires. The general experimental method is to use fine water mist to extinguish the fire. However, when fine water mist is used as a water-based fire extinguishing agent, its fire extinguishing mechanism is mainly based on oxygen isolation, asphyxiation and cooling. Therefore, in the actual fire extinguishing process, relying solely on the spraying of fine water mist for fire extinguishing is inefficient and cannot extinguish the fire in a timely, effective and rapid manner. Utility Model Content
[0004] The purpose of the utility model is to solve the problem in the prior art that when fine water mist is used as a water-based fire extinguishing agent, its fire extinguishing mechanism is mainly based on oxygen isolation, asphyxiation and cooling. Therefore, in the actual fire extinguishing process, the fire extinguishing method of spraying fine water mist alone is inefficient and cannot be extinguished promptly, effectively and quickly. An experimental device for synergistically suppressing lithium-ion battery fires by using perfluorohexanone and fine water mist is proposed.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A device for experimentally suppressing lithium-ion battery fires by synergistically using perfluorohexanone and fine water mist, comprising an experimental box and a nozzle, further comprising: a heating plate embedded and fixedly mounted on the inner wall of the experimental box, wherein the nozzle is located directly above the heating plate; a storage tank arranged on one side of the experimental box, wherein a pump body is fixedly connected to the experimental box, the nozzle is connected to the output end of the pump body, the input end of the pump body is fixedly connected to a water inlet pipe, the water inlet pipe is fixedly connected to a tee pipe, and one end of the tee pipe is respectively connected to the storage tank and the output end of the pump body.
[0007] In order to spray perfluorohexanone and water mist in coordination, preferably, a water outlet pipe is fixedly connected between the three-way pipe and the nozzle, and a bellows is provided on the water outlet pipe.
[0008] In order to treat flue gas, preferably, an air collecting hood is fixedly connected between the inner walls of the experimental box, a fan is fixedly connected to the top of the experimental box, and the air collecting hood is fixedly connected to the input end of the fan, wherein a water tank is fixedly connected to the top of the experimental box, an exhaust port is provided on the water tank, and an air outlet pipe is fixedly connected between the output end of the fan and the water tank.
[0009] In order to facilitate the adjustment of the height of the nozzle, preferably, the inner wall of the experimental box is longitudinally fixedly connected to a limit rod, a fixing ring is fixedly connected to the nozzle, two connecting rods are fixedly connected to the fixing ring, and a slider is fixedly connected to the connecting rod, one of the sliders is slidably connected to the limit rod.
[0010] In order to facilitate the adjustment of the height of the nozzle, the outside of the experimental box is further fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating shaft, and the inside of the experimental box is rotatably installed with a screw rod through a bearing, and the screw rod and the rotating shaft are fixedly connected with bevel gears, and the two bevel gears are meshed and connected, and one of the sliders is threadedly connected to the screw rod.
[0011] In order to facilitate the removal and placement of lithium batteries, preferably, two symmetrically arranged slide rails are fixedly connected to the bottom of the inner wall of the experimental box, and sliding blocks are slidably inserted on the slide rails. A protective frame is fixedly connected between the two sliding blocks, and a heat conducting plate is fixedly connected to the bottom of the protective frame. The bottom of the heat conducting plate is in the same plane as the top of the heating plate.
[0012] Compared with the existing technology, the present invention provides an experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist, which has the following beneficial effects:
[0013] 1. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist uses a heating plate to heat the lithium battery to generate flames. A high-pressure nitrogen cylinder pressurizes the storage tank to pass perfluorohexanone through a three-way pipe and a water outlet pipe and is then sprayed out from a nozzle. Perfluorohexanone can effectively interrupt the flame propagation process and reduce the generation of free radicals, thereby inhibiting the combustion reaction. After extinguishing the fire, the pump is started and the nozzle sprays fine water mist to cool the battery to prevent the lithium battery from reigniting and temperature rebound. Through the synergistic effect of perfluorohexanone and fine water mist, fire extinguishing can be performed efficiently.
[0014] 2. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist. During the fire extinguishing process, the fan is started, and the smoke enters the water tank through the gas collection hood and the exhaust pipe. The smoke dust in the smoke settles into the water, and the purified gas is discharged through the exhaust port, protecting the health of the experimenters. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the axonometric structure of an experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist, as proposed in the present invention;
[0016] Figure 2 Schematic diagram of the internal structure of the experimental box of the experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist proposed in this utility model Figure 1 ;
[0017] Figure 3 Schematic diagram of the internal structure of the experimental box of the experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist proposed in this utility model Figure 2 ;
[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the slide rail of an experimental device for cooperatively suppressing lithium-ion battery fires using perfluorohexanone and fine water mist, proposed in the utility model.
[0019] In the figure: 1. Experimental box; 201. Nozzle; 202. Pump body; 203. Water inlet pipe; 204. Tee pipe; 205. Water outlet pipe; 206. Bellows; 301. Air collecting hood; 302. Fan; 303. Water tank; 304. Air outlet pipe; 305. Exhaust port; 4. Heating plate; 6. Storage tank; 7. Motor; 8. Rotating shaft; 9. Screw; 10. Bevel gear; 11. Limit rod; 12. Fixing ring; 13. Connecting rod; 14. Slider; 15. Protective frame; 16. Heat conducting plate; 17. Slide rail; 18. Sliding block. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0022] Example:
[0023] Reference Figure 1-Figure 4The embodiment of the present invention provides an experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist, comprising an experimental box 1 and a nozzle 201, and further comprising: a heating plate 4, embedded and fixedly installed on the inner wall of the experimental box 1, wherein the nozzle 201 is directly above the heating plate 4; a storage tank 6 arranged on one side of the experimental box 1, wherein a pump body 202 is fixedly connected to the experimental box 1, the nozzle 201 is connected to the output end of the pump body 202, the input end of the pump body 202 is fixedly connected to a water inlet pipe 203, and the water inlet pipe 203 is fixedly connected to a tee pipe 204, wherein the two ends of the tee pipe 204 are respectively connected to the storage tank 6 and the pump The output end of the pump body 202 is connected, and the other end of the tee pipe 204 is connected to an external water source. The heating plate 4 is used to heat the lithium battery to generate a flame. The pump body 202, the heating plate 4 and the smoke detector 5 are all electrically connected to the external power supply. Perfluorohexanone is stored in the storage tank 6. A water outlet pipe 205 is fixedly connected between the tee pipe 204 and the nozzle 201. A bellows 206 is provided on the water outlet pipe 205. A high-pressure nitrogen cylinder is provided on the storage tank 6. The storage tank 6 is pressurized by the high-pressure nitrogen cylinder to spray perfluorohexanone. Two valves are provided on the tee pipe, which are used to control the spraying and stopping of perfluorohexanone and the spraying and stopping of fine water mist respectively.
[0024] Specifically, the heating plate 4 heats the lithium battery to generate a flame, and the high-pressure nitrogen cylinder pressurizes the storage tank 6 to pass the perfluorohexanone through the three-way pipe 204 and the water outlet pipe 205 and is sprayed out by the nozzle 201. The perfluorohexanone can effectively interrupt the flame propagation process and reduce the generation of free radicals, thereby inhibiting the combustion reaction. After the fire is extinguished, the pump body 202 is started, and the nozzle 201 sprays out fine water mist to cool the battery to prevent the lithium battery from reigniting and the temperature rebound. Under the synergistic effect of perfluorohexanone and fine water mist, the fire can be extinguished efficiently. The synergistic fire extinguishing effect of perfluorohexanone and fine water mist can be deeply studied to provide a scientific basis for the safety prevention and control of lithium-ion battery fires.
[0025] An air collecting hood 301 is fixedly connected between the inner walls of the experimental box 1, a fan 302 is fixedly connected to the top of the experimental box 1, and the air collecting hood 301 is fixedly connected to the input end of the fan 302. A water tank 303 is fixedly connected to the top of the experimental box 1, and an exhaust port 305 is provided on the water tank 303. An air outlet pipe 304 is fixedly connected between the output end of the fan 302 and the water tank 303. The fan 302 is electrically connected to the smoke detector 5, and the air outlet pipe 304 extends into the bottom of the water tank 303 to ensure that the smoke is directly discharged into the water.
[0026] Specifically, during the fire extinguishing process, the fan 302 is started, and the smoke enters the water tank 303 through the gas collecting hood 301 and the exhaust pipe 304. The smoke dust in the smoke settles into the water, and the purified gas is discharged through the exhaust port 305, protecting the health of the experimenters.
[0027] The inner wall of the experimental box 1 is longitudinally fixedly connected to a limit rod 11, a fixing ring 12 is fixedly connected to the nozzle 201, two connecting rods 13 are fixedly connected to the fixing ring 12, a slider 14 is fixedly connected to the connecting rod 13, one of the sliders 14 is slidingly connected to the limit rod 11, the outer side of the experimental box 1 is fixedly connected to a motor 7, the output end of the motor 7 is fixedly connected to a rotating shaft 8, a screw rod 9 is rotatably installed inside the experimental box 1 through a bearing, a bevel gear 10 is fixedly connected to the screw rod 9 and the rotating shaft 8, the two bevel gears 10 are meshed together, one of the sliders 14 is threadedly connected to the screw rod 9, and the motor 7 is electrically connected to an external power supply.
[0028] Specifically, the motor 7 is started, and its output end drives the rotating shaft 8 to rotate, which drives the screw 9 to rotate under the transmission of the bevel gear 10. Under the restriction of the limit rod 11, the two sliders 14 slide up and down. The slider 14 drives the nozzle 201 to move up and down through the connecting rod 13 and the fixed ring 12, so that the height of the nozzle 201 can be adjusted according to the burning conditions of the flame, and the spraying can be more targeted.
[0029] Two symmetrically arranged slide rails 17 are fixedly connected to the bottom of the inner wall of the experimental box 1, and a sliding block 18 is slidably inserted on the slide rail 17. A protective frame 15 is fixedly connected between the two sliding blocks 18. A heat conducting plate 16 is fixedly connected to the bottom of the protective frame 15. The bottom of the heat conducting plate 16 is in the same plane as the top of the heating plate 4. The experimental box 1 is made of transparent material to facilitate the experimenter to observe the experimental conditions. A box door is provided on the experimental box 1.
[0030] Specifically, the protective frame 15 and the heat conducting plate 16 are used to place lithium batteries, and the heat conducting plate 16 is used to introduce the heat generated by the heating plate 4 into the lithium batteries. By setting the slide rail 17 and the sliding block 18, when the sliding block 18 is fully pushed into the slide rail 17, the heat conducting plate 16 is located directly above the heating plate 4, which makes it convenient to take out and put in the lithium batteries in the protective frame 15 and the heat conducting plate 16, and is more convenient to use.
[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and fine water mist, comprising an experimental box (1) and a nozzle (201), characterized in that: Also includes: The heating plate (4) is embedded and fixedly installed on the inner wall of the experimental box (1). Wherein, the nozzle (201) is located directly above the heating plate (4); A storage tank (6) is provided on one side of the experimental box (1), The experimental box (1) is fixedly connected to a pump body (202), the nozzle (201) is connected to the output end of the pump body (202), the input end of the pump body (202) is fixedly connected to a water inlet pipe (203), and the experimental box (1) is fixedly connected to a three-way pipe (204), wherein the two ends of the three-way pipe (204) are respectively connected to the storage tank (6) and the output end of the pump body (202).
2. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and water mist according to claim 1, characterized in that: A water outlet pipe (205) is fixedly connected between the other end of the three-way pipe (204) and the nozzle (201), and a bellows (206) is provided on the water outlet pipe (205).
3. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and water mist according to claim 1, characterized in that: An air collecting hood (301) is fixedly connected between the inner walls of the experimental box (1), a fan (302) is fixedly connected to the top of the experimental box (1), and the air collecting hood (301) is fixedly connected to the input end of the fan (302). The top of the experimental box (1) is fixedly connected to a water tank (303), an exhaust port (305) is provided on the water tank (303), and an exhaust pipe (304) is fixedly connected between the output end of the fan (302) and the water tank (303).
4. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and water mist according to claim 1, characterized in that: The inner wall of the experimental box (1) is longitudinally fixedly connected to a limit rod (11), the nozzle (201) is fixedly connected to a fixing ring (12), the fixing ring (12) is fixedly connected to two connecting rods (13), the connecting rods (13) are fixedly connected to a slider (14), and one of the sliders (14) is slidably connected to the limit rod (11).
5. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and water mist according to claim 4, characterized in that: The outside of the experimental box (1) is fixedly connected to a motor (7), the output end of the motor (7) is fixedly connected to a rotating shaft (8), the interior of the experimental box (1) is rotatably mounted with a screw rod (9) via a bearing, the screw rod (9) and the rotating shaft (8) are both fixedly connected to a bevel gear (10), the two bevel gears (10) are meshed and connected, and one of the sliders (14) is threadedly connected to the screw rod (9).
6. The experimental device for synergistically suppressing lithium-ion battery fires using perfluorohexanone and water mist according to claim 1, characterized in that: The bottom of the inner wall of the experimental box (1) is fixedly connected to two symmetrically arranged slide rails (17), a slide block (18) is slidably inserted on the slide rail (17), a protective frame (15) is fixedly connected between the two slide blocks (18), and a heat conducting plate (16) is fixedly connected to the bottom of the protective frame (15), and the bottom of the heat conducting plate (16) is in the same plane as the top of the heating plate (4).