CN113332640A - Fire suppression program-controlled injection strategy for electrochemical energy storage system - Google Patents
Fire suppression program-controlled injection strategy for electrochemical energy storage system Download PDFInfo
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- CN113332640A CN113332640A CN202110621724.8A CN202110621724A CN113332640A CN 113332640 A CN113332640 A CN 113332640A CN 202110621724 A CN202110621724 A CN 202110621724A CN 113332640 A CN113332640 A CN 113332640A
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- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
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- 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
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
Abstract
The invention relates to a fire suppression program-controlled injection strategy for an electrochemical energy storage system, wherein a composite sensing fire monitoring module and a fire extinguishing system are arranged inside a battery prefabricated cabin, the fire extinguishing system is connected with a fire alarm controller, and the top of each battery module is provided with a distribution valve; after the composite sensing fire monitoring module sends out an alarm signal, the composite sensing fire monitoring module rapidly acquires the failure and invalidation position of the battery; the fire alarm controller is linked with the corresponding distribution valve, the fire extinguishing system is quickly started, the fire position where the battery thermal runaway occurs is quickly extinguished and continuously cooled, and the battery is prevented from reburning. The fire extinguishing system is achieved by combining a graded early warning mechanism with a perfluorohexanone fire extinguishing agent and a program-controlled spraying strategy, can effectively inhibit lithium battery fire, has the characteristics of accurate positioning, efficient fire extinguishing, continuous cooling and environmental friendliness, and protects electrical equipment and controls explosion to the maximum extent by a graded linkage control signal strategy.
Description
Technical Field
The invention relates to the technical field of fire extinguishing, in particular to a fire suppression program-controlled spraying strategy for an electrochemical energy storage system.
Background
With the development of society, energy storage power stations are an important ring in power use. In recent years, the energy storage industry is rapidly developed, large-scale commissioning of power grid-side projects brings about a transformer and opportunities of the industry, and the commissioning scale of electrochemical energy storage is continuously increased. However, lithium ion batteries are highly susceptible to thermal runaway combustion due to their high energy density and flammable and explosive material systems. Lithium battery fires are a process of heat build-up. Release of large amounts of organic substances including CO, H after thermal runaway of the battery2When flammable and toxic gases are generated, the working environment of the prefabricated cabin type lithium ion battery energy storage system is relatively closed, and the flammable gases are not emitted and are gathered together in a large quantity, so that the explosion risk is generated. While the lithium ion battery is widely applied to an energy storage system, the safety of the lithium ion battery is a problem to be solved urgently. Today, the energy storage industry is rapidly developing, and an intelligent energy storage power station fire prevention and control system is urgently needed.
Relevant research shows that the thermal runaway of the lithium ion battery is caused by the fact that the heat generation rate of the battery is far higher than the heat dissipation rate, and heat is accumulated in a large amount and is not dissipated out in time. Essentially, "thermal runaway" is a process of energy positive feedback cycles: the increased temperature causes the system to heat up, which in turn causes the system to become hotter. The internal energy of the battery core is generated all the time without consuming almost all the heat, which is the re-combustion phenomenon of the lithium ion battery. Thermal runaway of a monomer cell may result in a chain reaction of thermal diffusion. At present, the reference of the fire-fighting measures of the domestic energy storage system is the Japanese specification 'Battery code for power storage', a pipe network type or cabinet type gas fire extinguishing system is adopted, and a gas medium is heptafluoropropane. Due to the characteristic that heptafluoropropane is stored at high pressure and sprayed at one time, the effects of reducing temperature and inhibiting re-combustion cannot be achieved. The capacity of a single energy storage prefabricated cabin in the existing power grid side energy storage system is about 1MW/2MWh, and heptafluoropropane does not meet the use requirement in a large number of dense lithium ion battery energy storage systems.
Disclosure of Invention
It is an object of the present invention to provide a fire suppression programmed injection strategy for electrochemical energy storage systems that addresses the problems encountered in the background art discussed above.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a fire suppression programmed injection strategy for an electrochemical energy storage system, comprising the steps of:
s1, installing a composite sensing fire monitoring module and a fire extinguishing system in the battery prefabricated cabin, wherein the fire extinguishing system is connected with a fire alarm controller, and a distribution valve is installed at the top of each battery module;
s2, when the composite sensing fire monitoring module sends out an alarm signal, the composite sensing fire monitoring module rapidly acquires the failure and invalidation position of the battery;
and S3, linking the fire alarm controller and opening the corresponding distribution valve, quickly starting the fire extinguishing system, quickly extinguishing fire and continuously cooling the fire position where the battery thermal runaway occurs, and preventing the battery from reburning.
In the above scheme, fire extinguishing systems is perfluor hexanone fire extinguishing systems, compound perception fire monitoring module is provided with the monitoring devices who detects CO, VOC, smog concentration, temperature, for the battery conflagration when compound perception fire monitoring module all reaches tertiary alarm threshold value to CO concentration and temperature, links fire alarm controller and opens the battery cluster distributing valve that corresponds.
According to the scheme, when the composite sensing fire monitoring module detects that the concentration of VOC and CO exceeds the standard and sends out a secondary alarm threshold value, the composite sensing fire monitoring module is linked with the fire alarm controller to send out audible and visual alarm and output one-path early warning signal, and the early warning signal is linked to start the explosion-proof fan and the electrical equipment in the prefabricated cabin to pause to work and enter a standby state.
According to the scheme, when the composite sensing fire monitoring module detects that the VOC, CO concentration and temperature exceed the standards, a three-level alarm threshold value is sent, the fire alarm controller is linked to send out an acousto-optic alarm and start a 30S delay start countdown, a spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to shut down.
In the above-mentioned scheme, linkage fire alarm controller when compound perception fire monitoring module sends tertiary alarm threshold value opens the distributing valve that corresponds the battery cluster according to the position signal that compound perception fire monitoring module provided, starts energy storage fire control host computer, and perfluor hexanone fire extinguishing agent is spouted through the inside atomizer of battery module and is put, and the first time is spouted and is got into the inside 20 seconds of battery box, and follow-up is spouted with the procedure of spouting 2 seconds after 60 seconds of interval and is spouted and spout.
According to the scheme, when the composite sensing fire monitoring module detects that the VOC, CO concentration and temperature exceed the standards, a three-level alarm threshold value is sent, the fire alarm controller is linked to send out an acousto-optic alarm and start a 30S delay start countdown, a spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to shut down.
In the above scheme, perfluorohexanone fire extinguishing systems includes main pipe network and atomizer, and the system pipe network is installed at the inner chamber top in the prefabricated cabin of battery, and the atomizer is installed in every battery module in the prefabricated cabin of battery, and every atomizer uses single battery cluster to be connected with the main pipe network through the distribution valve as the unit.
In the above scheme, the battery module includes the battery module shell and installs the battery in the battery module shell, atomizer sets up the side at every battery module shell, atomizer's shower nozzle opening face center is not less than the battery upper surface, atomizer's the orientation of spouting covers the region between battery upper surface and the battery module shell roof, the distance between battery upper surface and the battery module shell roof is not less than 40mm, atomizer's shower nozzle opening center is unanimous with battery module shell roof center with the battery upper surface.
In the scheme, the infrared flame detector is further installed inside the battery prefabricated cabin, when the infrared flame detector detects that open fire generated in the prefabricated cabin reaches a three-level alarm threshold value, the infrared flame detector is used for generating an electrical fire, the fire alarm controller is linked with the distribution valve which is opened at the top of the corresponding prefabricated cabin, the energy storage fire-fighting host is started, and the perfluorohexanone fire extinguishing agent is sprayed through the atomizing nozzle at the top of the prefabricated cabin.
In the scheme, when the infrared flame detector detects that open fire exists and the local temperature exceeds the threshold value, a three-level alarm threshold value is sent out, the fire alarm controller is linked to send out audible and visual alarm and start 30S delay starting countdown, a spraying signal is output, and related electrical equipment in the battery prefabricated cabin is linked to shut down.
Compared with the prior art, the invention has the beneficial effects that: a fire extinguishing system that reaches through hierarchical early warning mechanism combination perfluorohexanone fire extinguishing agent cooperation program control injection strategy can effectual suppression lithium cell conflagration, accomplishes accurate location, high-efficient fire extinguishing, continuously cools down, the characteristics of environmental friendly. The first early warning mainly extinguishes open fire, the fire extinguishing medium is circularly inching for a plurality of times, a plurality of capacities of fire extinguishing medium are released each time, and long-term inhibition of the temperature in the battery module can be realized through the circular inching to prevent re-burning. The mechanism of the grading early warning and the program-controlled injection can not only quickly respond, but also realize early warning, early discovery and early inhibition, and the grading linkage control signal strategy can protect electrical equipment and control explosion to the maximum extent.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
FIG. 1 is a flow chart of a fire suppression program controlled injection strategy for an electrochemical energy storage system according to the present invention;
FIG. 2 is a schematic illustration of the installation of the fire suppression system of the present invention;
reference numbers in the figures: 1-infrared flame detector; 2-a first spray pipe; 3-a dispensing valve; 4-energy storage fire-fighting host; 5-a composite sensing fire monitoring module; 6-second spray pipe.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described in detail with reference to the attached drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution to which the present invention relates.
According to the technical scheme of the invention, a plurality of alternative structural modes and implementation modes can be provided by a person with ordinary skill in the art without changing the essential spirit of the invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.
Example 1, as shown in fig. 1 and 2, a fire suppression programmed injection strategy for an electrochemical energy storage system, comprising the steps of:
s1, installing a composite sensing fire monitoring module 5 and a fire extinguishing system in the battery prefabricated cabin, wherein the fire extinguishing system is connected with a fire alarm controller, and the top of each battery module is provided with a distribution valve 3;
s2, when the composite sensing fire monitoring module 5 sends out an alarm signal, the composite sensing fire monitoring module 5 rapidly acquires the battery failure and failure positions;
and S3, linking the fire alarm controller and opening the corresponding distribution valve 3, quickly starting the fire extinguishing system, quickly extinguishing fire and continuously cooling the fire position where the battery thermal runaway occurs, and preventing the battery from reburning.
Since the first-stage early warning and the second-stage early warning belong to the common early warning modes in the prior art, details are not repeated in the following description.
The control strategy adopts real-time detection of ambient temperature, smoke and gas parameter changes in the lithium battery module in the battery prefabricated cabin to compositely judge the thermal runaway stage of the battery and the fault type of the battery box, and is linked with a fire extinguishing system in the energy storage prefabricated cabin. The battery failure is known through early warning, the fire extinguishing system is started to quickly extinguish open fire in the fastest time, the thermal runaway and the thermal diffusion of the lithium battery are effectively controlled, the long-term inhibition of the temperature in the battery module is realized through follow-up inching injection, and the re-combustion is prevented.
During implementation, a fire extinguishing system is arranged in the battery prefabricated cabin and comprises a fire alarm controller, a composite sensing fire monitoring module 5, an infrared flame detector 1, an atomizing nozzle in the battery box, a distribution valve 3 and an energy storage fire fighting host 4. The inside atomizer of battery box installs the top between adjacent battery module, and evenly distributed is on first spray piping 2, and atomizer still installs in addition on the second spray piping 6 of the inside both sides in prefabricated cabin of battery, and energy storage fire control host computer 4 connects respectively and controls first spray piping 2 and second spray piping 6. The fire extinguishing system and the fire detection alarm system are respectively in communication connection with the fire alarm controller, the composite perception fire monitoring module 5 sets CO, VOC, the smoke concentration and the temperature reach a first alarm threshold value of corresponding alarm at the same time or the infrared flame detector 1 monitors that open fire occurs, when the composite perception fire monitoring module 5 detects that a monitoring value reaches the first alarm threshold value, the composite perception fire monitoring module 5 positions a fire position and links the fire alarm controller to start the fire extinguishing system and open the corresponding distribution valve 3, and the atomization spray heads at the corresponding positions are controlled to extinguish fire through the distribution valve 3. The distribution valves 3 may be solenoid valves so that each distribution valve 3 can be controlled individually.
As a preferred scheme, the fire extinguishing system is a perfluorohexanone fire extinguishing system, the perfluorohexanone fire extinguishing system comprises a main pipe network and an atomizing spray head, the system pipe network is installed at the top of an inner cavity of the battery prefabricated cabin, the atomizing spray head is installed in each battery module in the battery prefabricated cabin, and each atomizing spray head is connected with the main pipe network through a distribution valve 3 by taking a single battery cluster as a unit. The atomizer is generally uniformly arranged on the first spray pipe 2 and the second spray pipe 6, and is used for spraying the perfluorohexanone fire extinguishing agent.
The battery module includes battery module shell and installs the battery in the battery module shell, atomizer sets up the side at every battery module shell, atomizer's shower nozzle opening face center is not less than the battery upper surface, atomizer's the orientation of spouting covers the region between battery upper surface and the battery module shell roof, and atomizer's the orientation of spouting should not have the front shelter from the thing. The distance between the upper surface of the battery and the top plate of the battery module shell is not less than 40mm, and the center of the opening of the spray head of the atomizing spray head is consistent with the center of the upper surface of the battery and the center of the top plate of the battery module shell.
The perfluorohexanone fire extinguishing system is provided with a special atomizing nozzle which enables the diameter of droplets in a perfluorohexanone atomizing state to be locked at a design micron level under the urging of a power source of an energy storage fire-fighting host machine 4, the droplets are rapidly vaporized and evaporated after being heated, and the heat absorption characteristic of the perfluorohexanone generates the processes of liquefaction temperature rise heat absorption, vaporization heat absorption and steam heat carrying after the atomization locking design micron level. The process needs to absorb a large amount of heat of a comburent and a fire area, is hundreds of thousands of times of heat absorption capacity of common fire water spray, promotes the surface temperature of the comburent to instantly and rapidly drop and cool, and resists flame in a short time. The strong heat absorption capacity continuously takes away the surface temperature of the thermal runaway electric core in the battery module, and the occurrence of afterburning and thermal diffusion is prevented.
The perfluorohexanone atomizer jets out through the quick atomizing of 1 Mpa's internal pressure, and the atomizing perfluorohexanone of quick injection mixes with combustible gas fast in the battery box, accomplishes isolated oxygen and cuts off the effect of combustion source, reaches the purpose of putting out a fire fast.
When the three-level warning mode of the composite sensing fire monitoring module 5 matched with the perfluorohexanone fire extinguishing system is triggered, the power source in the energy storage fire fighting host 4 is immediately started to work, the distribution valve 3 on the pipeline at the top of the battery cluster where the battery module out of control thermally is located is opened, and the fire extinguishing medium is sprayed and inching released to the battery module in the whole battery cluster through the fire extinguishing agent spraying and releasing pipeline.
The composite perception fire monitoring module 5 is provided with a monitoring device for detecting CO, VOC, smoke concentration and temperature, when the composite perception fire monitoring module 5 achieves three-level alarm threshold values for CO concentration and temperature, a battery fire disaster occurs, and a fire alarm controller is linked with the battery cluster distribution valve 3 corresponding to the opening. When the composite perception fire monitoring module 5 detects that the concentration of VOC and CO exceeds the standard and sends out a secondary alarm threshold value, the composite perception fire monitoring module is linked with the fire alarm controller to send out audible and visual alarm and output a path of early warning signal, and the early warning signal is linked with the explosion-proof fan and the electrical equipment in the prefabricated cabin to be started to suspend working and enter a standby state.
In one embodiment, when the composite sensing fire monitoring module 5 detects that the concentrations of VOC and CO and the temperature exceed the standards, a three-level alarm threshold value is sent, the composite sensing fire monitoring module is linked with a fire alarm controller to send out an audible and visual alarm and starts a 30S time delay to start countdown, a spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to stop. When the fire-fighting system is manually started, the spraying signals are output in a linkage manner, the safety of the equipment is protected to the maximum extent, and secondary disasters are reduced.
In one embodiment, when the composite sensing fire monitoring module 5 sends out a three-level alarm threshold value, the composite sensing fire monitoring module is linked with a fire alarm controller, the distribution valve 3 corresponding to the battery cluster is opened according to a position signal provided by the composite sensing fire monitoring module 5, the energy storage fire fighting host 4 is started, the perfluorohexanone fire extinguishing agent is sprayed through an atomizing nozzle in the battery module, and is sprayed into the battery box for 20 seconds for the first time, so that the purpose of rapidly extinguishing open fire is achieved, the fire extinguishing agent, the electrolyte and combustible gas released by thermal runaway of the battery are fully mixed, and a combustion chain is blocked. And then, the inching spraying is carried out by a program of spraying for 2 seconds after 60 seconds to achieve the purposes of supplementing the concentration of the fire extinguishing agent in the battery box at intervals and continuously taking away the surface temperature of the out-of-control battery, controlling the surface temperature of the out-of-control battery within a controllable range and preventing thermal diffusion and afterburning. The circulating inching is carried out for a plurality of times, a plurality of volumes of fire extinguishing medium are released each time, and the long-acting inhibition of the temperature in the battery module can be realized by the circulating inching to prevent the after-burning.
In one embodiment, when the composite sensing fire monitoring module 5 detects that the concentrations of VOC and CO and the temperature exceed the standards, a three-level alarm threshold value is sent, the composite sensing fire monitoring module is linked with a fire alarm controller to send out an audible and visual alarm and starts a 30S time delay to start countdown, a spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to stop. Spraying signal is early warning signal, and explosion prevention is opened in early warning signal linkageThe fan and the electrical equipment in the prefabricated cabin stop working and enter a standby state, so that the risk of equipment damage is reduced. Explosion-proof fan handles CO, H in relative airtight prefabricated cabin2And when flammable and toxic gas is exhausted out of the cabin, the explosion risk that flammable gas cannot be emitted and gathered together in a large amount is avoided.
Further, when the infrared flame detector 1 detects that open fire exists and the local temperature exceeds the threshold value, a third-level alarm threshold value is sent out, the fire alarm controller is linked to send out sound-light alarm and start 30S time delay starting countdown, a spraying signal is output, and related electrical equipment in the battery prefabricated cabin is linked to stop.
Furthermore, in the above scheme, still including the remote video monitor system who is used for the prefabricated cabin behavior of remote video monitoring battery, when the system control cabinet outage, remote video monitor system is after the artifical conflagration stage of judgement, and long-range emergency starts fire extinguishing systems. When the system control cabinet is powered off, an emergency start-stop button arranged on the display and control host outside the battery prefabricated cabin is started, and the emergency start-stop button is linked with the fire alarm controller to start the fire extinguishing system.
In conclusion, the composite sensing fire monitoring module 5 sets a first alarm threshold value when the concentrations and temperatures of CO, VOC, smoke and smoke simultaneously reach corresponding alarms or an infrared flame detector monitors that an open fire occurs, and when the composite sensing fire monitoring module 5 detects that a monitoring value reaches the first alarm threshold value, the composite sensing fire monitoring module 5 positions a fire position and links a fire alarm controller to start a fire extinguishing system and open a corresponding distribution valve 3. According to the invention, the mode that the concentration of combustible gas in the battery prefabricated cabin is monitored to reach the first alarm threshold value and the fire extinguishing system in the battery prefabricated cabin is linked to start is adopted, the failure and failure positions of the battery are rapidly known, the fire extinguishing system is started in the shortest time, and when the volume fraction of steam of a fire extinguishing medium is 4% -6%, a good fire extinguishing effect can be achieved. The first early warning mainly extinguishes open fire, the fire extinguishing medium is circularly inching for a plurality of times, a plurality of capacities of fire extinguishing medium are released each time, and long-term inhibition of the temperature in the battery module can be realized through the circular inching to prevent re-burning.
The control strategy of the invention selects perfluorohexanone as the fire extinguishing agent to combine with the structural characteristics of the battery box, and achieves the effects of quick extinguishing and long-acting inhibition by designing a special atomizing nozzle to cooperate with program-controlled injection. The special atomizing nozzle for the perfluorohexanone enables the diameter of a droplet in a perfluorohexanone atomizing state to be locked at a design micron level under the urging of a power source of an energy storage fire-fighting host machine 4, and the heat absorption characteristic of the perfluorohexanone generates the processes of liquefaction temperature rise heat absorption, vaporization heat absorption and steam heat carrying after the atomization locking at the design micron level. The process needs to absorb a large amount of heat of the comburent and a fire area, so that the surface temperature of the comburent is instantly and rapidly reduced and cooled, and the flame is retarded in a short time. The strong heat absorption capacity continuously takes away the surface temperature of the thermal runaway electric core in the battery module, and the occurrence of afterburning and thermal diffusion is prevented.
The invention provides a fire suppression program-controlled injection strategy for an electrochemical energy storage system, which solves the defects of a fire protection system of the existing electrochemical energy storage system. A fire extinguishing system that reaches through hierarchical early warning mechanism combination perfluorohexanone fire extinguishing agent cooperation program control injection strategy can effectual suppression lithium cell conflagration, accomplishes accurate location, high-efficient fire extinguishing, continuously cools down, the characteristics of environmental friendly. The mechanism of the grading early warning and the program-controlled injection can not only quickly respond, but also realize early warning, early discovery and early inhibition, and the grading linkage control signal strategy can protect electrical equipment and control explosion to the maximum extent.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A fire suppression programmed injection strategy for an electrochemical energy storage system, comprising the steps of:
s1, installing a composite sensing fire monitoring module and a fire extinguishing system in the battery prefabricated cabin, wherein the fire extinguishing system is connected with a fire alarm controller, and a distribution valve is installed at the top of each battery module;
s2, when the composite sensing fire monitoring module sends out an alarm signal, the composite sensing fire monitoring module rapidly acquires the failure and invalidation position of the battery;
and S3, linking the fire alarm controller and opening the corresponding distribution valve, quickly starting the fire extinguishing system, quickly extinguishing fire and continuously cooling the fire position where the battery thermal runaway occurs, and preventing the battery from reburning.
2. The fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 1, wherein: the fire extinguishing system is a perfluorohexanone fire extinguishing system, the composite sensing fire monitoring module is provided with a monitoring device for detecting CO, VOC, smoke concentration and temperature, and when the composite sensing fire monitoring module reaches a three-level alarm threshold value for the CO concentration and the temperature, the composite sensing fire monitoring module is used for battery fire, and the fire alarm controller is linked with a battery cluster distribution valve corresponding to the battery cluster distribution valve.
3. A fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 2, wherein: when the composite sensing fire monitoring module detects that the concentration of VOC and CO exceeds the standard and sends out a secondary alarm threshold value, the composite sensing fire monitoring module is linked with the fire alarm controller to send out audible and visual alarm and output one-way early warning signal, and the early warning signal is linked with the explosion-proof fan and the electrical equipment in the prefabricated cabin to be started to suspend working and enter a standby state.
4. A fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 2, wherein: when the composite sensing fire monitoring module detects that the concentrations of VOC and CO and the temperature exceed the standards, a three-level alarm threshold value is sent, the composite sensing fire monitoring module is linked with a fire alarm controller to send out audible and visual alarm and starts 30S delay starting countdown, one path of spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to shut down.
5. The fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 4, wherein: linkage fire alarm controller when compound perception fire monitoring module sends tertiary alarm threshold value, opens the distributing valve that corresponds the battery cluster according to the position signal that compound perception fire monitoring module provided, starts energy storage fire engine, and perfluor hexanone fire extinguishing agent spouts through the inside atomizer of battery module and puts, and 20 seconds of first time is spouted and is got into battery box inside, and follow-up spout 2 seconds's procedure with interval 60 seconds back and carry out the inching and spray.
6. A fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 5, wherein: when the composite sensing fire monitoring module detects that the concentrations of VOC and CO and the temperature exceed the standards, a three-level alarm threshold value is sent, the composite sensing fire monitoring module is linked with a fire alarm controller to send out audible and visual alarm and starts 30S delay starting countdown, one path of spraying signal is output, and related electrical equipment in the prefabricated cabin is linked to shut down.
7. A fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 2, wherein: perfluorohexanone fire extinguishing systems includes main pipe network and atomizer, and the system pipe network is installed at the inner chamber top in the prefabricated cabin of battery, and the atomizer is installed in every battery module in the prefabricated cabin of battery, and every atomizer uses single battery cluster to be connected with the main pipe network through the distributing valve as the unit.
8. The fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 7, wherein: the battery module includes battery module shell and installs the battery in the battery module shell, atomizer sets up the side at every battery module shell, atomizer's shower nozzle opening face center is not less than the battery upper surface, atomizer's the orientation of spouting covers the region between battery upper surface and the battery module shell roof, the distance between battery upper surface and the battery module shell roof is not less than 40mm, atomizer's shower nozzle opening center is unanimous with battery module shell roof center with the battery upper surface.
9. The fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 7, wherein: and an infrared flame detector is also arranged in the battery prefabricated cabin, when the infrared flame detector detects that open fire generated in the prefabricated cabin reaches a three-level alarm threshold value, the infrared flame detector is used for generating an electrical fire, the fire alarm controller is linked with a distribution valve at the top of the corresponding prefabricated cabin, the energy storage fire-fighting host is started, and the perfluorohexanone fire extinguishing agent is sprayed through an atomizing nozzle at the top of the prefabricated cabin.
10. A fire suppression programmed injection strategy for an electrochemical energy storage system according to claim 9, wherein: when the infrared flame detector detects open fire and the local temperature exceeds the threshold value, a three-level alarm threshold value is sent out, the fire alarm controller is linked to send out audible and visual alarm and start 30S delay starting countdown, a spraying signal is output, and related electrical equipment in the battery prefabricated cabin is linked to shut down.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259683A (en) * | 2021-12-29 | 2022-04-01 | 国网电力科学研究院有限公司 | Fire-fighting remote emergency control method for energy storage station |
| CN114284614A (en) * | 2021-12-27 | 2022-04-05 | 华为数字能源技术有限公司 | Energy storage system and control method thereof |
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