CN216022775U - Automatic fire alarm and automatic fire extinguishing device for lithium ion battery fire - Google Patents
Automatic fire alarm and automatic fire extinguishing device for lithium ion battery fire Download PDFInfo
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- CN216022775U CN216022775U CN202022637075.4U CN202022637075U CN216022775U CN 216022775 U CN216022775 U CN 216022775U CN 202022637075 U CN202022637075 U CN 202022637075U CN 216022775 U CN216022775 U CN 216022775U
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Abstract
The utility model relates to a fireproof and explosion-proof safety device, in particular to a lithium ion battery fire automatic alarm and automatic fire extinguishing device, which is used for timely discovering and extinguishing fires caused by the lithium ion battery at the beginning and is characterized in that: an explosion-proof cabinet for storing a lithium ion battery is arranged, a wireless alarm smoke detector and a normally closed nozzle are arranged in the explosion-proof cabinet, and an alarm host and a liquid carbon dioxide bottle are arranged outside the explosion-proof cabinet; when the lithium ion battery in the explosion-proof cabinet generates abnormal temperature rise and sprays smoke, the smoke detector immediately sends out an alarm signal, meanwhile, the normally closed nozzle is opened due to heating, the liquid carbon dioxide bottle automatically sprays carbon dioxide aerial fog, open fire is extinguished by a suffocation method, the temperature in the cabinet is reduced by a phase change method, fire hazard is eliminated, but the normal battery in the cabinet cannot be damaged, not only is the labor saved, but also the method is more effective and more timely than the labor, the safety of storage and transportation of the lithium ion battery can be ensured, and the method has remarkable economic and social benefits.
Description
Technical Field
The utility model relates to a fireproof and explosion-proof safety device, in particular to a fireproof and explosion-proof safety device for lithium ion battery fire.
Background
The lithium ion battery capable of being repeatedly charged is a novel energy source and is more and more widely used. Wearable equipment such as cell-phones, bluetooth headset, intelligent wrist-watch that people used daily little, power supply, the power supply of space detection, the unmanned aerial vehicle power of various usage of electric bicycle, electric automobile, deep sea detector, in each field of modern society, lithium ion battery has been everywhere. Meanwhile, the fire caused by the lithium ion battery is also visible everywhere, even the fire of modern high-grade electric vehicles is frequent, and the fire of the electric bicycles is frequent. Some famous brand mobile phones lose the market due to the explosion of the lithium ion battery, and more portable charge pal is in spontaneous combustion accident in the plane.
The lithium ion battery is full of electrolyte which belongs to combustible liquid A. The combustible liquid A is easy to catch fire, and if the steam of the electrolyte is accumulated and the mixed gas with the air reaches the explosion limit, the explosion accident can happen. Because the lithium ion battery can generate a large amount of toxic smoke after being ignited, fire fighters are not easy to get close to the lithium ion battery, especially warehouses, markets, shops and the like which store and sell a large amount of lithium ion batteries, and the lithium ion battery cannot be put out in time once being ignited at night, so that serious fire disasters are likely to be caused.
Lithium ion batteries have a risk of spontaneous combustion during storage, and the ignition of the lithium ion batteries is caused by many reasons, such as overcharge, overdischarge, overcurrent, overvoltage, short circuit and the like; mechanical causes such as impact, collision, crushing, dropping, bending, piercing, vibration, gunshot, etc.; environmental reasons such as high temperature, low pressure, high humidity, salt spray, temperature shock, fire, etc.; there are manufacturing reasons such as poor membrane quality, pole piece burrs, pole lugs being too long, etc. These factors can cause the lithium ion battery to generate internal short circuit heating in the using and storing process, so that the electrolyte is heated and expanded, if the heating process can not be stopped, the electrolyte becomes steam, the pressure is increased, the electrolyte can be sprayed out of the battery, and the lithium ion battery can be burnt or even explode when meeting a fire source.
The primary cause of a lithium ion battery ignition is due to the presence of a flammable liquid electrolyte within the battery. These electrolytes are sealed in the respective batteries and do not ignite unless being discharged. One of the batteries in a stack or a battery assembly generates heat due to internal short circuit, so that the electrolyte expands due to heat, and the electrolyte steam is sprayed out to catch fire. The battery on fire heats other batteries beside, the electrolyte inside the battery is heated and expanded by the outside heat, and the electrolyte steam is sprayed and combusted. If the temperature of other batteries which do not catch fire does not exceed 100 ℃, the electrolyte will not be sprayed out. Therefore, the main contradiction of fire extinguishment of the lithium ion battery is not to extinguish flame, but to reduce the temperature, so that the temperature of the battery which is not sprayed with the electrolyte is reduced, the electrolyte cannot be sprayed, and the fire is naturally extinguished. The conventional dry powder fire extinguisher can not extinguish the lithium ion battery fire because the dry powder fire extinguisher can only extinguish the open fire and can not reduce the temperature. Water is the most effective fire extinguishing agent for lithium ion battery fires because it can be effectively cooled. But water can damage the lithium ion battery. In addition, in markets selling lithium ion batteries or storage places using spare lithium batteries such as unmanned planes, fire extinguishment by water spraying is difficult. All battery production enterprises and processing enterprises require that 24-hour manual inspection is carried out on lithium ion battery warehouses, and for storage places of lithium ion battery sales counters and spare lithium ion batteries, due to the limitation of various objective conditions, the actual situation is difficult, so that fire caused by lithium batteries occurs occasionally, and the research on a method and facilities for reasonably and effectively preventing and extinguishing fire of lithium ion batteries suitable for storage, particularly unattended places, is not slow.
SUMMERY OF THE UTILITY MODEL
The utility model aims to prevent and extinguish initial fire caused by a lithium ion battery, particularly discover the fire as soon as possible under the unattended condition, automatically extinguish the fire on the lithium ion battery, send out a fire alarm and inform managers to timely handle the fire, thereby effectively preventing the occurrence and the spread of the fire accidents in time.
Method of the utility model
In order to achieve the purpose, the utility model provides an automatic fire extinguishing device for a lithium ion battery fire hazard, which is used for timely finding stored lithium ion battery fire-ignited accident seedlings, immediately giving a fire alarm and automatically extinguishing fire seedlings when the lithium ion battery fire is ignited, and is characterized in that: the method comprises the following steps that an explosion-proof cabinet for storing a lithium ion battery is arranged, a wireless alarm smoke detector and a normally closed nozzle are arranged in the explosion-proof cabinet, an alarm host for receiving an alarm signal of the wireless alarm smoke detector is arranged outside the explosion-proof cabinet, and a liquid carbon dioxide bottle connected with the normally closed nozzle through a pipeline is arranged outside or inside the explosion-proof cabinet; when one or more lithium ion batteries in the explosion-proof cabinet are abnormal, the temperature rises to exceed the safe temperature and the smoke is sprayed out, the wireless alarm smoke detector detects smoke signals and temperature rising signals and immediately sends out wireless alarm signals, and an alarm host outside the explosion-proof cabinet receives the alarm signals and immediately sends the alarm signals to one or more mobile phones through the Internet of things in a mobile phone and mobile phone short message mode to inform a manager of treatment; meanwhile, the normally closed nozzle is opened due to heating, the carbon dioxide aerial fog is automatically sprayed out of the liquid carbon dioxide bottle, the open fire is extinguished by a suffocation method, the temperature in the cabinet is reduced by a phase change method, and the fire hazard is eliminated.
The device comprises an explosion-proof cabinet 10 for storing lithium ion batteries, a wireless alarm smoke detector 20 and a normally closed nozzle 30 which are arranged in the explosion-proof cabinet, a wireless alarm host 40 arranged outside the explosion-proof cabinet, a liquid carbon dioxide bottle 50 arranged outside or inside the explosion-proof cabinet, and a pipeline assembly 60 for communicating the normally closed nozzle and the liquid carbon dioxide bottle; when one or more lithium ion batteries in the explosion-proof cabinet 10 are abnormal, the temperature rises to exceed the safe temperature, and smoke is sprayed out, the wireless alarm smoke detector detects smoke signals and immediately sends out wireless alarm signals, the wireless alarm host receives the alarm signals and informs managers of the alarm signals in a mobile phone and mobile phone short message mode through the Internet of things, meanwhile, the normally closed nozzle 30 is automatically opened due to heating, liquid carbon dioxide in the liquid carbon dioxide bottle is vaporized and sprayed out from the opened normally closed nozzle 30 through the pipeline assembly 60, the temperature in the explosion-proof cabinet is reduced, and oxygen combustion supporting is blocked.
The explosion-proof cabinet 10 is made of two layers of steel plates, the space between the two layers of steel plates is filled with non-combustible materials such as glass fiber and other inorganic materials, and the shell wall of the steel plate is provided with a through hole 11 for the pipeline assembly 60 communicating the normally closed nozzle and the liquid carbon dioxide bottle to pass through.
This technique is used for when electric automobile lithium ion battery subassembly is explosion-proof, explosion-proof cabinet 10 is battery explosion-proof equipment 10a for electric automobile, a fire prevention and explosion-proof for battery pack 01 of electric automobile 00, battery pack 01 sets up at the internal of battery explosion-proof equipment 10 a's cabinet for electric automobile, smoke detector 20 and the setting of normal close formula nozzle 30 are in battery pack 01, liquid carbon dioxide bottle 50 sets up in the battery explosion-proof equipment 10a outside for electric automobile, wireless alarm host computer 40 sets up by the driver seat, be equipped with the electric wire through-hole 10a1 of charging wire and power output line break-through on the cabinet shell wall of explosion-proof cabinet for electric automobile.
When the technology is used for transporting a special freight automobile 01b of a lithium ion battery or a flammable substance, the explosion-proof cabinet 10 is an explosion-proof device 10c for a truck, a wireless alarm host 40 of the explosion-proof cabinet is arranged beside a driver driving position, and a plurality of liquid carbon dioxide bottles 50, a plurality of wireless alarm smoke detectors 20 and a plurality of normally closed nozzles 30 are respectively arranged at different positions in a truck box.
The technology can also be used for transporting a container of a lithium ion battery or an inflammable substance, the explosion-proof cabinet 10 is an explosion-proof device 10d for the container, the wireless alarm host 40 is arranged in the container 01c, and the liquid carbon dioxide bottle 50, the wireless alarm smoke detector 20 and the normally closed nozzle 30 are provided with a plurality of different parts which are respectively arranged in the container.
The wireless alarm smoke detector 20 comprises a broad-spectrum gas or smoke sensor 21, a radio transmitter 23 and a circuit board 24, and a temperature sensor 22 can be arranged if necessary, wherein the radio transmitter modulates smoke signals and temperature signals into radio signals to be transmitted to an alarm host computer, and then the radio signals are transmitted to an internet of things by the alarm host computer.
The normally closed nozzle 30 comprises an ether bubble filled with ether and a carbon dioxide inlet communicated with the pipeline assembly 60, when the temperature of one or more lithium ion batteries in the explosion-proof cabinet 10 abnormally rises to exceed a safe temperature, the ether bubble is exploded under overpressure, the normally closed nozzle is automatically opened, and liquid carbon dioxide from the pipeline assembly 60 is gasified and sprayed into the explosion-proof cabinet from the nozzle 30. The explosion temperature of the ether bubble is orange 57 ℃, red 68 ℃, yellow 79 ℃ and the like, the nozzle with higher explosion temperature is not suitable to be used, and the normally closed nozzle 30 with higher opening temperature is suitable to be used in the battery explosion-proof cabinet 10a for the electric automobile.
The wireless alarm host 40 comprises a radio receiving module 41, a radio transmitting module 42, a signal processing module 43 and a power supply module 44, wherein the radio transmitting module 42 uploads an alarm signal output by the signal processing module 43 to the internet of things and sends the alarm signal to one or more mobile or fixed communication devices of associated people through the internet of things.
The liquid carbon dioxide bottle 50 comprises a liquid storage bottle 51 and a pipe joint 52 connected with a pipeline assembly 60, wherein the liquid storage bottle 51 is a pressure container with pressure resistance of 10 MPa.
The utility model is mainly used for unattended lithium ion battery storehouses and places with small storage amount, such as retail counters and the like, and can also be used for electric automobiles in large quantity, containers for transporting lithium ion batteries, special freight automobiles for transporting lithium ion batteries, containers for transporting inflammable substances and storage of inflammable liquid. The containers are piled up during transportation to form a large-volume stack sometimes, and internal fire is difficult to find. When smoke is generated at the beginning of combustion, the wireless alarm smoke detector 20 detects smoke signals and temperature rise signals and immediately sends out wireless alarm signals, and an alarm host outside the explosion-proof cabinet receives the alarm signals and immediately sends the alarm signals to a mobile phone through the Internet of things in a mobile phone and mobile phone short message mode to inform a manager to treat the smoke. The alarm host can be connected with 5 mobile phones at most, and the mobile phones can receive the alarm signals only in places with wireless communication signals. The signal is detailed and comprises the time, the place, the contact information of the explosion-proof cabinet user or the related person and the like of the fire. The explosion-proof cabinet user must arrive the scene of a fire immediately after receiving alarm signal and deal with, if the managers can't deal with immediately, the more the fire burns, the temperature in the cabinet exceeds the safety limit of the used nozzle, the ether bubble 32 in the normally closed nozzle vaporizes because of being heated, the pressure rises rapidly and explodes, the normally closed nozzle opens automatically, the liquid carbon dioxide from the pipeline assembly 60 gasifies and sprays from the nozzle 30 to the explosion-proof cabinet, when the liquid carbon dioxide gasifies into gaseous state, on one hand, a large amount of phase transition heat is absorbed, the temperature in the cabinet is reduced rapidly to the safety temperature, theoretically the temperature can be reduced to 50 ℃ below zero at minimum, on the other hand, the cabinet is filled with carbon dioxide gas to isolate the oxygen combustion-supporting of combustible substances, thereby realizing the dual functions of reducing the temperature in the cabinet by the phase transition method and extinguishing the fire by the suffocation method to eliminate the hidden danger.
The utility model has the advantages of
The technology can find the lithium ion battery fire in the first time, send out a wireless alarm signal in the first time, and send the alarm signal to one or more relevant managers for disposal through the Internet of things in real time; meanwhile, the liquid carbon dioxide bottle automatically sprays carbon dioxide aerial fog, open fire is extinguished by a suffocation method, the temperature in the cabinet is reduced by a phase change method, fire hazards are eliminated, normal batteries in the cabinet cannot be damaged, manpower for 24-hour manual inspection is saved, the safety of lithium ion battery storage can be ensured more effectively and more timely than manual monitoring and explosion prevention, the fire loss caused by poor batteries is reduced to the minimum limit, and the liquid carbon dioxide bottle is particularly suitable for places related to lithium ion batteries, such as a small-amount lithium ion battery storage room, lithium ion battery production, returned goods of processing enterprises and safe storage of problem batteries, a sales counter and the like, and has remarkable economic and social benefits.
Drawings
FIG. 1 is a schematic diagram of an automatic fire alarm and extinguishing device for a lithium ion battery fire according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an automatic fire alarm and extinguishing device for a lithium ion battery fire according to a second embodiment of the present invention;
FIG. 3 is a schematic view of an automatic fire alarm and extinguishing device for a battery pack of an electric vehicle according to a third embodiment of the utility model
FIG. 4 is a schematic diagram of an explosion-proof device for a truck for transporting lithium ion batteries or flammable liquids according to a fourth embodiment of the present invention;
FIG. 5 is a schematic view of an automatic fire alarm and extinguishing device for a container carrying a lithium ion battery or a flammable liquid according to a fifth embodiment of the present invention;
fig. 6 is a schematic diagram of a liquid carbon dioxide bottle in each embodiment.
FIG. 7 is an electrical schematic block diagram of the wireless alarm smoke detector 20 of an embodiment of the present invention;
fig. 8 is an electrical schematic block diagram of a wireless alarm host 40 of an embodiment of the present invention.
Detailed Description
Example one
The automatic fire alarm and automatic fire extinguishing device for the lithium ion battery fire comprises an explosion-proof cabinet 10 for storing the lithium ion battery, a wireless alarm smoke detector 20 and a normally closed nozzle 30 which are arranged in the explosion-proof cabinet, a wireless alarm host 40 and a liquid carbon dioxide bottle 50 which are arranged outside the explosion-proof cabinet, and a pipeline assembly 60 for communicating the normally closed nozzle and the liquid carbon dioxide bottle, wherein the wireless alarm smoke detector 20 and the normally closed nozzle 30 are arranged outside the explosion-proof cabinet. The explosion-proof cabinet 10 is a sealed cabinet, generally in a hexahedral shape, and has a cabinet casing made of two steel plates, a space between the two steel plates being filled with a noncombustible material such as an inorganic material such as glass fiber, and a top wall provided with a through hole 11 for passing a pipe assembly 60 for communicating a normally closed nozzle with a liquid carbon dioxide bottle.
The wireless alarm smoke detector 20 comprises a broad-spectrum gas or smoke sensor 21, a radio transmitter 23 and a circuit board 24, and a temperature sensor 22 can also be arranged, and the electrical principle is shown in fig. 7. The wireless transmitter modulates the smoke signal and the temperature signal into a wireless signal to be transmitted to the alarm host, and then the wireless signal is transmitted to the Internet of things by the alarm host.
The closed nozzle 30 includes a carbon dioxide inlet in communication with the conduit assembly 60 and a diethyl ether-filled diethyl ether foam, which is available in the existing commercial fire fighting nozzles. When the temperature of a single lithium ion battery in the explosion-proof cabinet 10 abnormally rises to exceed the safety temperature, the ether bubble is exploded under overpressure, the normally closed nozzle is automatically opened, and the liquid carbon dioxide from the pipeline assembly 60 is gasified and sprayed into the explosion-proof cabinet from the normally closed nozzle 30. The usual ether bubble bursting temperature is: orange 57 deg.C, red 68 deg.C, yellow 79 deg.C, etc., and nozzles with higher blasting temperatures are not suitable for use.
The wireless alarm main unit 40 includes a radio receiving module 41, a radio transmitting module 42, a signal processing module 43 and a power supply module 44, and the electrical principle thereof is as shown in fig. 8. The radio transmitting module 42 uploads the alarm signal output by the signal processing module 43 to the internet of things, and sends the alarm signal to one or more mobile or fixed communication devices associated with people through the internet of things.
The liquid carbon dioxide bottle 50 comprises a liquid storage bottle 51 and a pipe joint 52, the structural principle of the liquid carbon dioxide bottle is shown in fig. 6, the liquid storage bottle 51 is a pressure container with pressure resistance of 10MPa, the pressure container is installed on the top of the explosion-proof cabinet 10, and the pipe joint 52 is connected with a pipeline assembly 60.
The present example is mainly used for places such as retail counter and the like where lithium ion battery production and processing enterprises store return batteries and problem batteries and a small amount of lithium ion batteries, and management personnel are unattended after work. Once a single lithium ion battery in the explosion-proof cabinet 10 heats up due to internal short circuit and exceeds a safe temperature limit, the internal combustible electrolyte expands to a certain degree, and then smoke is sprayed out of the battery and mixed with air to be combusted, and explosion accidents can occur when the mixed gas of electrolyte steam and air reaches the explosion limit because of unmanned timely treatment. When smoke is generated when mixed gas just starts to burn, the wireless alarm smoke detector detects smoke signals and temperature rise signals and immediately sends out wireless alarm signals, and an alarm host outside the explosion-proof cabinet receives the alarm signals and immediately sends the alarm signals to a mobile phone through the Internet of things in a mobile phone and mobile phone short message mode to inform a manager of treatment. The alarm host can be connected with 5 mobile phones at most, and the mobile phones can receive the alarm signals only in places with wireless communication signals. The signal is detailed and comprises the time, the place, the contact information of the explosion-proof cabinet user or the related person and the like of the fire. The explosion-proof cabinet user must arrive the scene of a fire immediately after receiving alarm signal and deal with, if managers are too late to deal with immediately, the more the fire burns, when the temperature in the cabinet exceeds the safe limit, the liquid ether in the ether bubble of the normally closed nozzle 30 vaporizes because the temperature rises above the set temperature, the pressure rises sharply, the bubble wall explodes, the normally closed nozzle opens automatically, the liquid carbon dioxide from the pipeline assembly 60 is gasified and sprayed into the explosion-proof cabinet from the normally closed nozzle, when the liquid carbon dioxide is gasified into a gaseous state, on one hand, a large amount of phase transition heat is absorbed, so that the temperature in the cabinet is sharply reduced below the safe temperature, and theoretically, the ambient temperature can be reduced to minus 50 ℃ after the phase transition of the gasification of the liquid carbon dioxide. On the other hand, the cabinet is filled with carbon dioxide gas to isolate combustion-supporting oxygen of combustible substances, thereby realizing double functions of reducing the temperature in the cabinet by a phase change method and extinguishing open fire by a suffocation method to eliminate fire hazard.
Example two
This embodiment is also a lithium ion battery fire automatic alarm automatic fire extinguishing device, as shown in fig. 2, basically the same as the first embodiment, except that a liquid carbon dioxide bottle 50 is installed in the explosion-proof cabinet, and a pipe joint 52 thereof is directly communicated with the normally closed nozzle 30 without using a pipe assembly. The explosion-proof cabinet is a totally-enclosed explosion-proof cabinet 10b, and a through hole for the pipeline assembly to pass through is not required to be arranged.
The structure of the explosion-proof cabinet is more compact and simplified, but the utilization rate of the internal space of the explosion-proof cabinet is lower.
EXAMPLE III
The present embodiment is a lithium ion battery fire automatic alarm automatic fire extinguisher for an electric vehicle 00, as shown in fig. 3, and is substantially the same as the second embodiment, mainly different in that an explosion proof cabinet 10 is a battery explosion proof device 10a for an electric vehicle which accommodates a battery pack 01 of the electric vehicle 00, a wireless alarm smoke detector 20 and a normally closed nozzle 30 are disposed in the battery pack 01, a liquid carbon dioxide bottle 50 is disposed outside the battery explosion proof device 10a for an electric vehicle, and a through hole which passes through a charging wire 02, a power line 03 and a control line 04 is provided on a wall of a housing 10a1 of the battery explosion proof device for an electric vehicle. The wireless alarm main unit 40 is disposed beside the driver's driving seat.
The utility model can be used for various electric automobiles, and the electric automobiles are unattended after parking, so that fire accidents caused by spontaneous combustion of the electric automobiles can be prevented.
Example four
The present embodiment is an automatic fire alarm and fire extinguishing device for a special truck for transporting lithium ion batteries or flammable substances, and is basically the same as the first embodiment except that the explosion-proof cabinet 10 is an explosion-proof device 10c for trucks, a liquid carbon dioxide bottle 50, a wireless alarm smoke detector 20 and a normally closed nozzle 30 are installed in a truck cargo box, and a wireless alarm host 40 is arranged beside a driver's driving seat, as shown in fig. 4. According to the size of a cargo box of the truck, a plurality of carbon dioxide gas cylinders 50, a plurality of wireless alarm smoke detectors 20 and a plurality of normally closed nozzles 30 are arranged at different positions of the cargo box.
EXAMPLE five
The present embodiment is an automatic fire alarm and fire extinguishing device for a special container for transporting lithium ion batteries or flammable substances, and is basically the same as the first embodiment except that the explosion-proof cabinet 10 is an explosion-proof device 10d for a container, and a liquid carbon dioxide bottle 50, a wireless alarm smoke detector 20 and a normally closed nozzle 30 are installed in the container, as shown in fig. 5. A plurality of carbon dioxide cylinders 50 and a plurality of normally closed nozzles 30 are installed at different positions according to the size of the container. The carbon dioxide cylinder 50 and the normally closed nozzle 30 are connected by a pipe 60. Because the container stacking volume is large and radio signals cannot be transmitted no matter in a goods yard, a ship or an airplane, the alarm signal needs to be transmitted by a wire transmission method or only extinguishes automatically without alarming.
Claims (8)
1. The utility model provides a device that lithium ion battery conflagration automatic alarm automatic fire extinguishing which characterized in that: the device comprises an explosion-proof cabinet (10) for storing a lithium ion battery, a wireless alarm smoke detector (20) and a normally closed nozzle (30) which are arranged in the explosion-proof cabinet, a wireless alarm host (40) arranged outside the explosion-proof cabinet, a liquid carbon dioxide bottle (50) arranged outside or inside the explosion-proof cabinet, and a pipeline assembly (60) for communicating the normally closed nozzle and the liquid carbon dioxide bottle; when one or more lithium ion batteries in the explosion-proof cabinet (10) are abnormal, the temperature rises to exceed the safe temperature, and smoke is sprayed out, the wireless alarm smoke detector detects smoke signals and sends out wireless alarm signals immediately, the wireless alarm host receives the alarm signals and informs managers of the alarm signals in a mobile phone and mobile phone short message mode through the Internet of things, meanwhile, the normally closed nozzle (30) is automatically opened due to heating, liquid carbon dioxide in the liquid carbon dioxide bottle is sprayed out from the opened normally closed nozzle (30) in a vaporization mode through the pipeline assembly (60), the temperature in the explosion-proof cabinet is reduced, and combustion-supporting oxygen is blocked.
2. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the shell of the explosion-proof cabinet (10) body is made of two layers of steel plates, the two layers of steel plates are filled with non-combustible materials, and a through hole (11) for a pipeline assembly (60) for communicating a normally closed nozzle with a liquid carbon dioxide bottle to pass through is formed in the shell wall of the steel plate.
3. The automatic fire alarm and automatic fire extinguishing device for the lithium ion battery fire disaster as claimed in claim 1, wherein: explosion-proof cabinet (10) is battery explosion-proof equipment (10a) for electric automobile, a fire prevention explosion-proof for battery pack (01) of electric automobile (00), battery pack (01) set up in the cabinet body of battery explosion-proof equipment (10a) for electric automobile, smoke detector (20) and normal close formula nozzle (30) set up in battery explosion-proof equipment (10a) for electric automobile, liquid carbon dioxide bottle (50) set up in battery pack (01) outside, wireless alarm host computer (40) set up by the driver seat, be equipped with electric wire through-hole (10a1) of charging wire and power output line break-through on the cabinet shell wall of explosion-proof cabinet for electric automobile.
4. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the anti-explosion cabinet (10) is an anti-explosion device (10c) for a truck and is used for a special freight car (01b) for conveying lithium ion batteries or inflammable substances, the wireless alarm host (40) is arranged beside a driver driving seat, and the liquid carbon dioxide bottle (50), the wireless alarm smoke detector (20) and the normally closed nozzle (30) are provided with a plurality of different parts which are respectively arranged in a car container.
5. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the explosion-proof cabinet (10) is a battery explosion-proof device (10d) for a container and is used for conveying a lithium ion battery or a container (01c) of inflammable substances, the wireless alarm host (40) is arranged in the container (01c), and the liquid carbon dioxide bottle (50), the wireless alarm smoke detector (20) and the normally closed nozzle (30) are provided with a plurality of different parts which are respectively arranged in the container.
6. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the wireless alarm smoke detector (20) comprises a gas or smoke sensor (21), and/or a temperature sensor (22), a radio transmitter (23) and a circuit board (24), wherein the radio transmitter modulates smoke signals and/or temperature signals into radio signals to be transmitted to an alarm host, and the alarm host is transmitted to an Internet of things.
7. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the wireless alarm host (40) comprises a radio receiving module (41), a radio transmitting module (42), a signal processing module (43) and a power supply module (44), wherein the radio transmitting module (42) uploads an alarm signal output by the signal processing module (43) to the Internet of things and sends the alarm signal to one or more mobile or fixed communication devices of associated people through the Internet of things.
8. The lithium ion battery fire automatic alarm and automatic fire extinguishing device according to claim 1, characterized in that: the liquid carbon dioxide bottle (50) comprises a liquid storage bottle (51) and a pipe joint (52) connected with the pipeline assembly (60), and the liquid storage bottle (51) is a pressure container with pressure resistance of 10 MPa.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503520A (en) * | 2022-10-27 | 2022-12-23 | 宜家智能科技(广州)有限公司 | Lithium battery charging cabinet with fire-fighting and fire-extinguishing functions and fire-extinguishing method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503520A (en) * | 2022-10-27 | 2022-12-23 | 宜家智能科技(广州)有限公司 | Lithium battery charging cabinet with fire-fighting and fire-extinguishing functions and fire-extinguishing method |
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