CN115487445A - Fire-fighting early warning method and system for high-voltage cascade battery system - Google Patents

Fire-fighting early warning method and system for high-voltage cascade battery system Download PDF

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Publication number
CN115487445A
CN115487445A CN202210944138.1A CN202210944138A CN115487445A CN 115487445 A CN115487445 A CN 115487445A CN 202210944138 A CN202210944138 A CN 202210944138A CN 115487445 A CN115487445 A CN 115487445A
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China
Prior art keywords
fire
battery
fire extinguishing
extinguishing agent
battery module
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CN202210944138.1A
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Chinese (zh)
Inventor
李毓烜
陈满
李勇琦
胡振恺
彭鹏
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Energy Storage Research Institute Of China Southern Power Grid Peak Regulation And Frequency Regulation Power Generation Co ltd
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Energy Storage Research Institute Of China Southern Power Grid Peak Regulation And Frequency Regulation Power Generation Co ltd
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Priority to CN202210944138.1A priority Critical patent/CN115487445A/en
Publication of CN115487445A publication Critical patent/CN115487445A/en
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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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/005—Delivery of fire-extinguishing material using nozzles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/28—Accessories for delivery devices, e.g. supports
    • 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
    • A62C37/40—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 with electric connection between sensor and actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The application relates to a fire-fighting early warning method, a fire-fighting early warning system, a fire-fighting early warning device, computer equipment, a storage medium and a computer program product of a high-voltage cascade battery system. The method comprises the following steps: through the smog data that acquires each battery module in the battery cluster, the temperature data of each electric core in combustible gas data and each battery module, if according to each battery module's smog data, each battery module's combustible gas data and the temperature data of each electric core, judge the early warning level and be the level of predetermineeing, start fire extinguishing agent bottle group and put out a fire to each battery module, and after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if judge and take place the risk of reburning, put out a fire to the water of battery container. The method can be used for extinguishing fire with high accuracy.

Description

Fire-fighting early warning method and system for high-voltage cascade battery system
Technical Field
The application relates to the technical field of energy storage, in particular to a fire-fighting early warning method and system for a high-voltage cascade battery system.
Background
Along with the development of energy storage technology, traditional battery energy storage power station can be through the direct current conversion of energy storage converter with battery system to the alternating current, and rethread step-up transformer can insert the electric wire netting after stepping up the alternating current to satisfy the power supply demand, however, battery system in the energy storage power station can take place thermal runaway because self chemical reaction and external influence at the charge-discharge in-process, has influenced the safety of energy storage power station.
Generally, a fire extinguishing process can be implemented when a fire is encountered by providing a fire detector in a battery system in an energy storage power station to detect the operation of the battery system in the energy storage power station.
However, the current fire extinguishing method has low sensitivity, can cause fire spread and reduces the accuracy of fire extinguishing treatment.
Disclosure of Invention
In view of the above, there is a need to provide a fire-fighting early warning method and system for a high-voltage cascade battery system, which can improve the fire-fighting accuracy.
In a first aspect, the application provides a fire-fighting early warning method for a high-voltage cascade battery system. The method comprises the following steps:
acquiring smoke data and combustible gas data of each battery module in a battery cluster and temperature data of each battery cell in each battery module;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery core, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery cluster is disposed in the battery container.
In one embodiment, the determining, by the processing unit, that the temperature data of each battery cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, the smoke data of each battery module includes a smoke concentration, and if the pre-warning level is determined to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module, and the temperature data of each battery cell, includes:
and if the temperature rise rate is greater than or equal to a preset rate, or the temperature difference is greater than or equal to a preset temperature difference, or the highest temperature is greater than or equal to a preset temperature, the combustible gas concentration is greater than or equal to a preset gas concentration, and the smoke concentration is greater than or equal to a preset smoke concentration, determining that the early warning grade is the preset grade.
In one embodiment, after the fire extinguishing agent bottle group is started to extinguish a fire of each battery module, if it is determined that a restrike risk occurs, the method for extinguishing a fire of a battery container with water includes:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained;
if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and obtaining the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises the temperature rise rate, the temperature difference and the highest temperature;
if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature difference, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module;
if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of a re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
In one of them embodiment, after starting the fire extinguishing agent bottle group and putting out a fire to each battery module, if judge that the risk of after combustion takes place, put out a fire to battery container with water, include:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, acquiring image data in the battery container;
and if the restriking risk is judged according to the image data, opening a water fire-fighting interface in the battery container to extinguish the fire of the battery container.
In one embodiment, after the fire extinguishing agent bottle group is started to extinguish a fire of each battery module, if it is determined that a restrike risk occurs, the method for extinguishing a fire of a battery container with water includes:
after the fire extinguishing agent bottle group is started to extinguish fire of each battery module, if a control instruction is received, the occurrence of a re-combustion risk is judged, and a water fire-fighting interface in the battery container is opened to extinguish the fire of the battery container.
In a second aspect, the present application further provides a fire-fighting early warning system of a high-voltage cascade battery system, which is characterized by comprising: the fire extinguishing device comprises a battery container, wherein the battery container is provided with a fire extinguishing host, a battery cluster and a fire extinguishing agent bottle group, the battery cluster comprises a high-pressure box and a plurality of battery modules, each battery module is respectively provided with a smoke detector and a combustible gas detector, each battery core in each battery module is respectively provided with a temperature probe, an alarm module is arranged in the high-pressure box,
the smoke detector is used for acquiring smoke data of each battery module;
the combustible gas detector is used for acquiring combustible gas data of each battery module;
each temperature probe is used for acquiring temperature data of each battery cell;
the alarm module is used for judging that the early warning level is a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, and sending fire warning prompt information to the fire-fighting host so that the fire-fighting host starts the fire extinguishing agent bottle group to extinguish the fire of each battery module;
the alarm module is also used for sending the reburning prompt information to the fire fighting host if the reburning risk is judged to occur after the fire extinguishing agent bottle group is started to extinguish the fire of the battery module, so that the fire fighting host opens a water fire fighting interface in the battery container to extinguish the fire of the battery container.
In one embodiment, the method further comprises the following steps: the fire extinguishing agent bottle group comprises a cabinet arranged in the battery cluster and spray heads arranged on the front panel of each battery module, wherein each battery module is fixed on the cabinet, the top of the cabinet is laid with a set of main pipeline and an electromagnetic valve, a plurality of sets of branch pipelines are fixed at a vertical beam in front of the cabinet and a vertical beam in the cabinet, one end of the electromagnetic valve is connected to the fire extinguishing agent bottle group through the set of main pipeline, and the other end of the electromagnetic valve is connected to the spray heads through the branch pipelines;
the fire-fighting host is used for opening the electromagnetic valve when receiving the fire alarm prompt message, so that the fire extinguishing agent in the fire extinguishing agent bottle group sequentially passes through the main pipeline, the electromagnetic valve, the branch pipeline and the spray head and is sprayed to the battery modules.
In one embodiment, the solenoid valve is a normally closed solenoid valve.
In one embodiment, the main pipe and the branch pipes are metal hoses.
In one embodiment, a photoelectric conversion module is also arranged in the high-pressure tank,
and the photoelectric conversion module is used for sending the fire alarm prompt message or the reburning prompt message to the fire-fighting host through an optical fiber by the alarm module.
In a third aspect, the application further provides a fire-fighting early warning device of the high-voltage cascade battery system. The device comprises:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring smoke data and combustible gas data of each battery module in a battery cluster and temperature data of each battery cell in each battery module;
the fire extinguishing agent extinguishing module is used for judging that the early warning level is a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, and starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
the water fire extinguishing module is used for carrying out water fire extinguishing on the battery container if the restriking risk is judged to occur after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module; the battery cluster is disposed in the battery container.
In a fourth aspect, the present application further provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the following steps when executing the computer program:
acquiring smoke data and combustible gas data of each battery module in a battery cluster and temperature data of each battery cell in each battery module;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery core, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery cluster is disposed in the battery container.
In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
acquiring smoke data, combustible gas data and temperature data of each battery cell in each battery module in a battery cluster;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery core, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishment is carried out on the battery container; the battery cluster is disposed in the battery container.
In a sixth aspect, the present application further provides a computer program product. The computer program product comprising a computer program which when executed by a processor performs the steps of:
acquiring smoke data, combustible gas data and temperature data of each battery cell in each battery module in a battery cluster;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery core, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery cluster is disposed in the battery container.
According to the fire-fighting early warning method, the fire-fighting early warning system, the fire-fighting early warning device, the computer equipment, the storage medium and the computer program product of the high-voltage cascade battery system, the early warning grade is judged to be the preset grade by acquiring the smoke data and the combustible gas data of each battery module in the battery cluster and the temperature data of each battery cell in each battery module, the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, and after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the occurrence of a re-ignition risk is judged, the water fire can be extinguished for the battery container, so that the fire extinguishing process can be accurately controlled through different judgment conditions, and the fire extinguishing accuracy can be improved.
Drawings
FIG. 1 is a schematic diagram of a fire warning system of a high voltage cascade battery system in one embodiment;
FIG. 2 is a schematic diagram of a cell cluster according to one embodiment;
FIG. 3 is a schematic structural view of a main pipe in one embodiment;
FIG. 4 is a schematic diagram showing the structure of a branch pipe in one embodiment;
FIG. 5 is a schematic illustration of the fire early warning principle in one embodiment;
FIG. 6 is a diagram of a hierarchical early warning strategy in one embodiment;
FIG. 7 is a schematic diagram of a triple fire suppression strategy in one embodiment;
FIG. 8 is a schematic flow chart illustrating a method for fire warning of a high voltage cascaded battery system according to an embodiment;
FIG. 9 is a schematic flow diagram of water fire extinguishing for a battery container after fire extinguishing for each battery module by starting a fire extinguishing agent bottle group and if the re-ignition risk is judged to occur;
FIG. 10 is a schematic structural diagram of a fire-fighting early warning device of a high-voltage cascade battery system in one embodiment;
FIG. 11 is a diagram illustrating an internal structure of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
With the development of energy storage technology, the traditional battery energy storage power station can convert the direct current of a battery system into alternating current through an energy storage converter, and the alternating current can be boosted by a boosting transformer and then can be connected to a power grid, so that the power supply requirement is met.
The traditional battery energy storage scheme has the advantage of flexible configuration in view of large-scale energy storage project application conditions implemented on the Power grid side, but the battery modules in a battery cluster are excessively connected in parallel, the battery capacity utilization rate is low, the temperature is difficult to keep consistent, the capacity of a single-set System in an energy storage Power station is small, the output voltage of the single-set System is low, the output Power of the single-set System is small, a plurality of transformers and high-voltage switch cabinets are provided, the System efficiency is low, the coordination between systems is difficult, and the scheduling response time is too long, so that the emergency scheduling use requirements of the Power grid are difficult to meet.
Safety is energy storage system's first key element, lithium ion battery can take place the thermal runaway because self chemical reaction or external influence at the charge-discharge in-process, seriously influence the safety in energy storage power station, at present, energy storage fire extinguishing systems often adopts full submerged formula heptafluoropropane to put out a fire, through the operational aspect that sets up the fire detector monitoring energy storage system of a plurality of different grade types, the response is lagged behind, sensitivity is lower, be unfavorable for the very fast conflagration of very first time detection lithium cell explosion formula, probably lead to the conflagration to stretch, the degree of accuracy of the processing of putting out a fire has been reduced.
In view of this, an embodiment of the present application provides a fire-fighting early-warning method for a high-voltage cascaded battery system, where the method may be applied to a fire-fighting early-warning system of the high-voltage cascaded battery system shown in fig. 1, where the fire-fighting early-warning system of the high-voltage cascaded battery system includes: the battery container 100, battery cluster 10, PCS cabinet 20, switch board 30 and fire extinguishing system are set up in the battery container 100, and the fire extinguishing system includes fire extinguishing agent delivery system 41, fire control host 43 and fire extinguishing agent bottle group 44.
The PCS cabinet 30 includes a plurality of power modules, each power module corresponds to one battery cluster, so that an energy storage chain link can be formed, and each energy storage chain link is connected in series to provide 10kV voltage.
Wherein the content of the first and second substances,the battery cluster is used as a minimum spraying unit of the fire extinguishing agent, a plurality of battery clusters can share one set of fire extinguishing agent bottle group, specifically, the battery cluster 10 comprises a plurality of battery modules, a high-pressure box and a cabinet, and the plurality of battery modules and the high-pressure box are fixed on the cabinet; an alarm module and a photoelectric conversion module are integrated in the high-voltage box, the high voltage level of the high-voltage cascade battery cluster is considered, and in order to avoid communication interference, the alarm module is in optical fiber communication with the fire-fighting host through the photoelectric conversion module; each battery module is a minimum unit and comprises a battery and a shell, each battery module comprises a smoke detector and a combustible gas detector, and the combustible gas detector can be used for detecting H 2 And other types of combustible gas such as CO, so that the combustible gas condition in each battery module can be detected in real time and the combustible gas data can be obtained, and the smoke detector can be used for detecting the smoke condition in each battery module in real time and obtaining the smoke data to timely and accurately find out the thermal runaway area; each battery module also comprises a plurality of battery cores, each battery core is provided with a spray head, each battery module is also provided with a plurality of temperature probes, each temperature probe can be arranged on a connecting piece of an adjacent battery core, temperature data of each battery core can be obtained based on each temperature probe, and fire extinguishment of each battery module can be realized based on the spray heads on each battery core; the spray head may be an atomising spray head.
The fire early warning system comprises a fire early warning system, and based on the fire early warning system, the system operation condition can be monitored, classified early warning and early intervention can be realized, and the safety of the battery system is improved; contactor, fuse etc. can also be integrated in the high-voltage box, in case detect the conflagration, the fire control host computer disconnection contactor to the electrical connection between each battery cluster of disconnection reduces the risk.
Exemplarily, as shown in fig. 2, a schematic structural diagram of a battery cluster is provided, where the battery cluster includes a battery module 200, the battery module 200 includes a plurality of battery cells, which are respectively M1 to M13, each battery cell is provided with a spray head, a temperature probe is further provided on a connection piece of an adjacent battery cell, which is not shown in the figure, and the battery module 200 is further provided with a smoke detector and a combustible gas detector.
The fire extinguishing agent conveying system 41 comprises a set of main pipeline, a plurality of sets of branch pipelines, electromagnetic valves and spray heads, as shown in fig. 3, the main pipeline is laid on the top of the cabinet 13, the electromagnetic valves are fixed on the top of the cabinet 13, as shown in fig. 4, the plurality of sets of branch pipelines are fixed at a vertical beam in front of the cabinet 13 and a vertical beam in the cabinet 13, the number of the branch pipelines depends on the number of battery clusters, specifically, one end of the main pipeline is connected to a fire extinguishing agent bottle group, and the other end of the main pipeline is connected to the spray heads on the front panels of the battery modules through the electromagnetic valves and the branch pipelines; considering that the voltage level of the high-voltage cascade battery cluster is higher, in order to ensure safety, the main pipeline and the branch pipelines are made of metal hoses, so that the parts are convenient to disassemble, assemble and replace; the solenoid valve may be a normally closed solenoid valve.
A Battery Management System (BMS) can be integrated in the control cabinet 30, the BMS can analyze data uploaded by a Battery Cluster Management unit (BCMS) and communicate with a fire-fighting host, and the BMS and the fire warning System can jointly monitor the operation status of the fire warning System; the BCMS is disposed in a high pressure tank, and data uploaded to the BMS by the BCMS is obtained from a Battery Management Unit (BMU) disposed on each cell, and the data is temperature data and voltage data of each cell.
On the basis of the schematic diagrams shown in fig. 2 to 4, as shown in fig. 5, a schematic diagram of a fire-fighting early warning principle is provided, wherein an alarm module receives temperature data uploaded by each temperature probe, and then combines smoke data detected by a smoke detector and combustible gas data detected by a combustible gas detector to determine different early warning levels, different prompt information is determined by the basically different early warning levels, the alarm module can upload the prompt information to a fire-fighting host 40 through a photoelectric conversion module, and the fire-fighting host determines whether to start a fire-extinguishing agent bottle group 44 according to different prompt information, so that abnormal conditions such as short circuit, heating and the like can be timely found when each battery module works, classified early warning is performed, and fire extinguishing treatment is started as soon as possible, and fire hazards are eliminated in a bud state.
Specifically, as shown in fig. 6, a schematic diagram of a hierarchical early warning strategy is provided, and the early warning level may be determined based on the following implementation manners, where:
in the first implementation manner, if the temperature rise rate is greater than or equal to the preset rate, or the highest temperature is greater than or equal to the preset temperature, or the temperature difference is greater than or equal to the preset temperature difference, and the concentration of the combustible gas is less than the preset concentration of the combustible gas, it is determined that the early warning level is the first-level early warning, and the alarm module uploads early warning prompt information to the fire-fighting host 43 through the photoelectric conversion module, but does not start the fire-extinguishing agent bottle group 44.
It can be understood that if the temperature rise rate is less than the preset rate, or the highest temperature is less than the preset temperature, or the temperature difference is less than the preset temperature difference, it can be determined that no abnormality occurs in each voltage module in the battery cluster, that is, no thermal runaway occurs in each battery module in the battery cluster.
In the second implementation manner, if the temperature rise rate is greater than or equal to the preset rate, or the highest temperature is greater than or equal to the preset temperature, or the temperature difference is greater than or equal to the preset temperature difference, the concentration of combustible gas is greater than or equal to the preset concentration of gas, and the concentration of smoke is less than the preset concentration of smoke, it is determined that the early warning level is a second-level early warning, the alarm module uploads early warning prompt information to the background or cloud platform to remind maintenance personnel, and meanwhile, the maintenance personnel can manually start the fire extinguishing agent bottle group 44, so that the perfluorohexanone fire extinguishing agent in the fire extinguishing agent bottle group 44 is sprayed to each module of the battery cluster in the thermal runaway area through the main pipeline, the electromagnetic valve, the branch pipeline and the atomizing nozzles in the fire extinguishing agent conveying system 41 to submerge the fire ignition point.
In the third implementation manner, if the temperature rise rate is greater than or equal to the preset rate, or the highest temperature is greater than or equal to the preset temperature, or the temperature difference is greater than or equal to the preset temperature difference, the concentration of combustible gas is greater than or equal to the preset concentration of gas, and the concentration of smoke is greater than or equal to the preset concentration of smoke, it is determined that the early warning level is a three-level early warning, the alarm module uploads fire early warning information to the fire host 40, the fire host locates a thermal runaway area according to the fire early warning information, and automatically starts the fire extinguishing agent bottle group 44, so that the perfluorohexanone fire extinguishing agent in the fire extinguishing agent bottle group 44 is sprayed to each module of the battery cluster in the thermal runaway through the main pipeline, the electromagnetic valve, the branch pipeline and the atomizing nozzle in the fire extinguishing agent conveying system 41, and it is ensured that the fire extinguishing agent can be sprayed in the whole area, submerge a fire-starting point, and a quick fire extinguishing effect is achieved.
Wherein, can also be provided with audible-visual annunciator and gaseous indicator that sprays in the battery container, fire engine 40 receives fire alarm information after, can open audible-visual annunciator and gaseous indicator that sprays, reminds on-the-spot maintainer to open fire extinguishing agent bottle group 44 after the time of predetermineeing, like this, can reserve the departure time for maintainer, guarantee maintainer's security.
Based on the above description, as shown in fig. 7, a schematic diagram of a tertiary fire-fighting strategy is provided, wherein the tertiary fire-fighting strategy includes a primary fire-fighting strategy, a secondary fire-fighting strategy and a water fire-fighting strategy, wherein the primary fire-fighting strategy and the secondary fire-fighting strategy are used for indicating a strategy for fire-fighting using the fire-fighting agent in the fire-fighting agent bottle group 44, and the water fire-fighting strategy is used for indicating a strategy for water fire-fighting using a water fire-fighting interface in the battery container; wherein the fire extinguishing agent can be perfluorohexanone fire extinguishing agent.
Confirm when the early warning level is tertiary early warning at alarm module, alarm module uploads conflagration early warning information to the fire-fighting host computer, the fire-fighting host computer starts fire extinguishing agent bottle group and puts out a fire to each battery module, concretely, fire-fighting host computer starts fire extinguishing agent bottle group, make the fire extinguishing agent in the fire extinguishing agent bottle group through the trunk line among the fire extinguishing agent conveying system, the solenoid valve, the branch pipeline, atomizing nozzle sprays each battery module to battery cluster in the thermal runaway, thereby put out a fire to each battery module, the realization is flooded entirely to whole battery cluster, the fire extinguishing strategy of above-mentioned description is a fire extinguishing strategy, the number of times of starting fire extinguishing agent group in a fire extinguishing strategy is 1.
After the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the fire-fighting host can acquire the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container, if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, the fire extinguishing agent bottle group is closed, and the alarm module is instructed to acquire the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; or, when maintainer judged that the conflagration is not put out completely through the camera, when maintainer judged that the risk of taking place to reburn promptly, fortune dimension personnel can start manual start button, also can make fire control host computer start fire extinguishing agent bottle group put out a fire to each battery module, and the fire extinguishing strategy of above-mentioned description is secondary fire extinguishing strategy, and the number of times that starts fire extinguisher group in the secondary fire extinguishing strategy is 2.
If the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, the concentration of the fire extinguishing agent can meet the standard requirement, and the spraying can be stopped; if the temperature rise rate is less than the preset rate, or the highest temperature is less than the preset temperature, or the temperature difference is less than the preset temperature difference, judging that the re-combustion risk does not occur, and ending the fire extinguishing; or, when the fortune dimension personnel judge through the camera that the risk of reburning does not take place, then also can end to put out a fire, wherein, the camera can be infrared camera or other types of camera.
Wherein, manual start button disposes on the fire control host computer, the fire control host computer can also dispose manual stop button and emergency stop button, no matter fire control early warning system is in any state, press emergency start button, fire control early warning system will start audible-visual annunciator and gaseous spraying pilot lamp to after delaying 30 seconds, restart fire extinguishing agent bottle group, press emergency stop button this moment, fire control early warning system can not start fire extinguishing agent bottle group, and close audible-visual annunciator and gaseous spraying pilot lamp, gaseous spraying pilot lamp.
After extinguishing fire at secondary start fire extinguishing agent bottle group to each battery module, reacquire the temperature rise rate of each electric core once more, the difference in temperature and the highest temperature, if in the time of predetermineeing, reacquire the temperature rise rate be greater than or equal to predetermine the rate, or, reacquire the highest temperature be greater than or equal to predetermine the temperature, or, reacquire the difference in temperature be greater than or equal to predetermine the difference in temperature, judge that the risk of reburning takes place, alarm module can send the prompt message of reburning to the fire control host computer, the fire extinguishing agent bottle group is closed to the fire control host computer, and open the water fire control interface in the battery container and carry out the water fire extinguishing to the battery container, the fire extinguishing strategy of above-mentioned description is water fire extinguishing strategy, the number of times of starting fire extinguishing group in the water fire extinguishing strategy is 2.
When the water fire-fighting strategy is started, whether the fire truck is in place or not can be judged, if the fire truck is in place, the fire-fighting water bag can be connected to a water fire-fighting interface in the battery container, so that water is supplied into the battery container, and if the fire truck is not in place, the fire-fighting agent can be continuously used for extinguishing fire; or, the water fire hydrant can be preassembled to a safe area in advance, and when the water fire-fighting strategy is started, the battery container can be transported to the safe area, so that a fire-fighting pipeline can be connected to the safe area through the water fire-fighting interface and water can be injected into the safe area.
When judging whether the fire extinguishing strategy is a water fire extinguishing strategy or not, if the temperature rise rate acquired again is smaller than the preset rate, or the maximum temperature acquired again is smaller than the preset temperature, or the temperature difference acquired again is smaller than the preset temperature difference, judging that the re-ignition risk does not occur, and ending the fire extinguishing; or, the operation and maintenance personnel can also finish fire extinguishing when judging that the risk of reburning does not occur through the camera.
In combination with the triple fire extinguishing strategy described above, it can be understood that if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the fire-fighting host can start the water fire extinguishing strategy, specifically, if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the alarm module determines that a re-ignition risk occurs, the alarm module can send re-ignition prompt information to the fire-fighting host through the photoelectric conversion module, the fire-fighting host can close the fire extinguishing agent bottle group, and open a water fire-fighting interface in the battery container to perform water fire extinguishing on the battery container, for example, the preset number of times is 2 times or other values, the specific value of the preset number of times can be set according to an actual application scene, and the application is not specifically limited.
It can be understood that when the fire-fighting host receives the fire early warning information or the reburning prompt information, the system power supply can be cut off, the emergency power supply is reserved, and the air conditioner and the fan are turned off.
In combination with the above, the fire-fighting early warning system of the high-voltage cascade battery system can be used for a container type energy storage system and can also be used for an indoor energy storage system, on one hand, the battery condition can be monitored in real time by integrating the temperature probe, the smoke detector and the combustible gas detector in the battery module, abnormal conditions such as short circuit and heating can be found as soon as possible, and the fire hazard can be eliminated in a bud state; compared with a method that the BMS analyzes the temperature data and the voltage data of the battery cores in real time, and once abnormity is found, the temperature data and the fire extinguishing agent bottle group are communicated and then started, so that communication delay is caused, the temperature probes directly acquire the temperature data of the battery cores and upload the temperature data to the alarm module, and delay caused by communication forwarding of the BMS and the fire extinguishing system is avoided; the temperature probes of the battery cells are used for detecting the temperature in the corresponding battery modules in real time, so that multiple extinguishment can be realized; on the other hand, an alarm module is configured in each battery cluster, receives data uploaded by the smoke detector and the combustible gas detector, and performs grading early warning, early detection, early warning and early inhibition, so that dangerous case spreading can be avoided; on the other hand, based on the temperature probe and the camera in the container, the fire condition in the container is monitored in real time, the fire is extinguished through multiple starting, and the fire is extinguished through combining the water fire-fighting interface.
In combination with the above, as shown in fig. 8, a flow diagram of a fire-fighting early-warning method for a high-voltage cascade battery system is provided, which may include the following steps:
s802, smoke data and combustible gas data of each battery module in the battery cluster and temperature data of each battery cell in each battery module are obtained.
S804, if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, the fire extinguishing agent bottle group is started to extinguish the fire of each battery module.
S806, after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery clusters are disposed in a battery container.
For specific contents of S802 to S806, reference may be made to the foregoing adaptive description, which is not repeated herein.
To sum up, in the embodiment that fig. 8 shows, through the smog data that acquires each battery module in the battery cluster, the temperature data of each electric core in combustible gas data and each battery module, if according to each battery module's smog data, each battery module's combustible gas data and the temperature data of each electric core, judge that the early warning grade is preset grade, start fire extinguishing agent bottle group and put out a fire to each battery module, and after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if judge to take place the risk of reburning, put out a fire to the water of battery container, therefore, realize the accurate control to the fire extinguishing process through different judgement conditions, thereby can improve the fire extinguishing accuracy degree.
In one embodiment, the temperature data of each battery cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, the smoke data of each battery module includes a smoke concentration, and if the smoke data of each battery module, the combustible gas data of each battery module, and the temperature data of each battery cell are based on, the early warning level is determined to be a preset level, which includes:
if the temperature rise rate is greater than or equal to the preset rate, or the temperature difference is greater than or equal to the preset temperature difference, or the highest temperature is greater than or equal to the preset temperature, the concentration of combustible gas is greater than or equal to the preset concentration of gas, and the concentration of smoke is greater than or equal to the preset concentration of smoke, determining the early warning grade as the preset grade, wherein the preset grade is three-grade early warning.
In one embodiment, as shown in fig. 9, a schematic flow chart of performing water fire extinguishing on a battery container after fire extinguishing of each battery module is started by a fire extinguishing agent bottle group and if a risk of re-ignition is determined to occur, where temperature data of each battery cell includes a temperature rise rate, a temperature difference, and a maximum temperature, and may include the following steps:
s902, after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained.
And S904, if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again.
And S906, if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature difference, continuously starting the fire extinguishing agent bottle group to extinguish the fire of each battery module.
And S908, if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, judging that the risk of re-ignition occurs, closing the fire extinguishing agent bottle group, and opening a water fire-fighting interface in the battery container to extinguish the fire in the battery container.
For specific contents of S902 to S908, reference may be made to the foregoing adaptive description, which is not repeated herein.
In one of them embodiment, after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if judge to take place the risk of reburning, carry out water to battery container and put out a fire, include: after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, acquiring image data in the battery container; if the restriking risk is judged to occur according to the image data, a water fire-fighting interface in the battery container is opened to carry out water fire-fighting on the battery container.
In one of them embodiment, after starting each battery module of fire extinguishing agent bottle group and putting out a fire, if judge to take place the risk of after firing, carry out water to battery container and put out a fire, include: after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if receive control command, judge to take place the risk of reburning, open the water fire control interface in the battery container and carry out water to the battery container and put out a fire.
Wherein, maintainer can judge whether have the risk of reburning through the camera, if maintainer judges through the camera that there is the risk of reburning again, then can open manual start button, like this, the fire engine can receive control command to can open the water fire control interface in the battery container and carry out the water to the battery container and put out a fire.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the application also provides a fire-fighting early warning device of the high-voltage cascade battery system, which is used for realizing the fire-fighting early warning method of the high-voltage cascade battery system. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so the specific limitations in the embodiment of the fire-fighting early warning device for one or more high-voltage cascade battery systems provided below can be referred to the limitations on the fire-fighting early warning method for the high-voltage cascade battery system, and are not described herein again.
In one embodiment, as shown in fig. 10, there is provided a fire early warning apparatus of a high voltage cascade battery system, including: an acquisition module 1002, a fire suppressant module 1004, and a water fire suppression module 1006, wherein:
the obtaining module 1002 is configured to obtain smoke data and combustible gas data of each battery module in the battery cluster, and temperature data of each battery cell in each battery module.
And the fire extinguishing agent extinguishing module 1004 is used for judging that the early warning level is a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, and starting the fire extinguishing agent bottle group to extinguish the fire of each battery module.
The water fire extinguishing module 1006 is used for performing water fire extinguishing on the battery container if the restriking risk is judged to occur after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module; the battery clusters are disposed in a battery container.
In one embodiment, the temperature data of each battery cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, and the smoke data of each battery module includes a smoke concentration, and the fire extinguishing agent fire extinguishing module is further configured to determine that the early warning level is the preset level if the temperature rise rate is greater than or equal to the preset rate, or the temperature difference is greater than or equal to the preset temperature difference, or the maximum temperature is greater than or equal to the preset temperature, the combustible gas concentration is greater than or equal to the preset gas concentration, and the smoke concentration is greater than or equal to the preset smoke concentration.
In one embodiment, the water fire extinguishing module is further used for acquiring the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module; if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises a temperature rise rate, a temperature difference and a highest temperature; if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module; if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of the re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
In one embodiment, the water fire extinguishing module is further used for acquiring image data in the battery container after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module; and if the occurrence of the re-ignition risk is judged according to the image data, opening a water fire-fighting interface in the battery container to carry out water fire extinguishing on the battery container.
In one embodiment, the water fire extinguishing module is further used for judging that the risk of reburning occurs if a control instruction is received after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, and opening a water fire fighting interface in the battery container to extinguish the fire of the battery container.
All modules in the fire-fighting early warning device of the high-voltage cascade battery system can be wholly or partially realized through software, hardware and a combination of the software and the hardware. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, and the internal structure thereof may be as shown in fig. 11. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing temperature data, smoke data and combustible gas data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a fire-fighting early warning method of the high-voltage cascade battery system.
Those skilled in the art will appreciate that the architecture shown in fig. 11 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring smoke data, combustible gas data and temperature data of each battery cell in each battery module in a battery cluster;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishment is carried out on the battery container; the battery clusters are disposed in a battery container.
In one embodiment, the temperature data of each battery cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, the smoke data of each battery module includes a smoke concentration, and the processor, when executing the computer program, further implements the following steps:
and if the temperature rise rate is greater than or equal to a preset rate, or the temperature difference is greater than or equal to a preset temperature difference, or the highest temperature is greater than or equal to a preset temperature, the combustible gas concentration is greater than or equal to a preset gas concentration, and the smoke concentration is greater than or equal to a preset smoke concentration, determining that the early warning grade is a preset grade.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained;
if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises a temperature rise rate, a temperature difference and a highest temperature;
if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module;
if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of the re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish fire of each battery module, image data in the battery container are obtained;
and if the occurrence of the re-ignition risk is judged according to the image data, opening a water fire-fighting interface in the battery container to carry out water fire extinguishing on the battery container.
In one embodiment, the processor when executing the computer program further performs the steps of:
after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if receive control command, judge to take place the risk of reburning, open the water fire control interface in the battery container and carry out water to the battery container and put out a fire.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring smoke data, combustible gas data and temperature data of each battery cell in each battery module in a battery cluster;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery clusters are disposed in a battery container.
In one embodiment, the temperature data of each cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, the smoke data of each battery module includes a smoke concentration, and the computer program when executed by the processor further performs the steps of:
and if the temperature rise rate is greater than or equal to a preset rate, or the temperature difference is greater than or equal to a preset temperature difference, or the highest temperature is greater than or equal to a preset temperature, the combustible gas concentration is greater than or equal to a preset gas concentration, and the smoke concentration is greater than or equal to a preset smoke concentration, determining that the early warning grade is a preset grade.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained;
if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises a temperature rise rate, a temperature difference and a highest temperature;
if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module;
if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of the re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, acquiring image data in the battery container;
and if the occurrence of the re-ignition risk is judged according to the image data, opening a water fire-fighting interface in the battery container to carry out water fire extinguishing on the battery container.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after starting each battery module of fire extinguishing agent bottle group and putting out a fire, if receive control command, judge to take place the risk of reburning, open the water fire control interface in the battery container and carry out water to the battery container and put out a fire.
In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of:
acquiring smoke data, combustible gas data and temperature data of each battery cell in each battery module in a battery cluster;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishing is carried out on the battery container; the battery clusters are disposed in a battery container.
In one embodiment, the temperature data of each cell includes a temperature rise rate, a temperature difference, and a maximum temperature, the combustible gas data of each battery module includes a combustible gas concentration, the smoke data of each battery module includes a smoke concentration, and the computer program when executed by the processor further performs the steps of:
and if the temperature rise rate is greater than or equal to a preset rate, or the temperature difference is greater than or equal to a preset temperature difference, or the highest temperature is greater than or equal to a preset temperature, the combustible gas concentration is greater than or equal to a preset gas concentration, and the smoke concentration is greater than or equal to a preset smoke concentration, determining that the early warning grade is a preset grade.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained;
if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises a temperature rise rate, a temperature difference and a highest temperature;
if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module;
if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of the re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, acquiring image data in the battery container;
and if the occurrence of the re-ignition risk is judged according to the image data, opening a water fire-fighting interface in the battery container to carry out water fire extinguishing on the battery container.
In one embodiment, the computer program when executed by the processor further performs the steps of:
after starting fire extinguishing agent bottle group and putting out a fire to each battery module, if receive control command, judge to take place the risk of reburning, open the water fire control interface in the battery container and carry out water to the battery container and put out a fire.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims (10)

1. A fire-fighting early warning method of a high-voltage cascade battery system is characterized by comprising the following steps:
acquiring smoke data and combustible gas data of each battery module in a battery cluster and temperature data of each battery cell in each battery module;
if the early warning level is judged to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery core, starting a fire extinguishing agent bottle group to extinguish the fire of each battery module;
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, if the restrike risk is judged to occur, water fire extinguishment is carried out on the battery container; the battery cluster is disposed in the battery container.
2. The method of claim 1, wherein the temperature data of each battery cell comprises a temperature rise rate, a temperature difference and a maximum temperature, the combustible gas data of each battery module comprises a combustible gas concentration, the smoke data of each battery module comprises a smoke concentration, and if the pre-warning level is determined to be a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, the method comprises:
and if the temperature rise rate is greater than or equal to a preset rate, or the temperature difference is greater than or equal to a preset temperature difference, or the highest temperature is greater than or equal to a preset temperature, the combustible gas concentration is greater than or equal to a preset gas concentration, and the smoke concentration is greater than or equal to a preset smoke concentration, determining that the early warning grade is the preset grade.
3. The method of claim 1, wherein after the fire extinguishing agent bottle group is activated to extinguish the fire of each battery module, if the risk of re-ignition is determined to occur, performing water fire extinguishing on the battery container, comprising:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, the concentration of the fire extinguishing agent sprayed by the fire extinguishing agent bottle group in the battery container is obtained;
if the concentration of the fire extinguishing agent is greater than or equal to the preset concentration of the fire extinguishing agent, closing the fire extinguishing agent bottle group, and acquiring the temperature rise rate, the temperature difference and the highest temperature of each battery cell again; the temperature data of each battery cell comprises the temperature rise rate, the temperature difference and the maximum temperature;
if the temperature rise rate obtained again is larger than or equal to the preset rate within the preset time, or the maximum temperature obtained again is larger than or equal to the preset temperature, or the temperature difference obtained again is larger than or equal to the preset temperature difference, the fire extinguishing agent bottle group is continuously started to extinguish the fire of each battery module;
if the number of times of starting the fire extinguishing agent bottle group exceeds the preset number of times, the occurrence of a re-burning risk is judged, the fire extinguishing agent bottle group is closed, and a water fire-fighting interface in the battery container is opened to carry out water fire extinguishing on the battery container.
4. The method of claim 1, wherein after the fire extinguishing agent bottle group is activated to extinguish the fire of each battery module, if the risk of re-ignition is determined to occur, performing water fire extinguishing on the battery container, comprising:
after the fire extinguishing agent bottle group is started to extinguish the fire of each battery module, acquiring image data in the battery container;
and if the occurrence of the re-ignition risk is judged according to the image data, opening a water fire-fighting interface in the battery container to carry out water fire extinguishing on the battery container.
5. The method of claim 1, wherein after the fire extinguishing agent bottle group is activated to extinguish the fire of each battery module, if the restrike risk is determined to occur, performing water fire extinguishing on the battery container, comprises:
after the fire extinguishing agent bottle group is started to extinguish fire of each battery module, if a control instruction is received, the occurrence of a re-combustion risk is judged, and a water fire-fighting interface in the battery container is opened to extinguish the fire of the battery container.
6. The utility model provides a fire control early warning system of high-pressure cascade battery system which characterized in that includes: the fire extinguishing device comprises a battery container, wherein the battery container is provided with a fire extinguishing host, a battery cluster and a fire extinguishing agent bottle group, the battery cluster comprises a high-pressure box and a plurality of battery modules, each battery module is respectively provided with a smoke detector and a combustible gas detector, each battery core in each battery module is respectively provided with a temperature probe, an alarm module is arranged in the high-pressure box,
the smoke detector is used for acquiring smoke data of each battery module;
the combustible gas detector is used for acquiring combustible gas data of each battery module;
each temperature probe is used for acquiring temperature data of each battery cell;
the alarm module is used for judging that the early warning level is a preset level according to the smoke data of each battery module, the combustible gas data of each battery module and the temperature data of each battery cell, and sending fire warning prompt information to the fire-fighting host so that the fire-fighting host starts the fire extinguishing agent bottle group to extinguish the fire of each battery module;
the alarm module is also used for sending the reburning prompt information to the fire-fighting host if the reburning risk is judged to occur after the fire-extinguishing agent bottle group is started to extinguish a fire of the battery module, so that the fire-fighting host opens a water fire-fighting interface in the battery container to extinguish the fire of the battery container.
7. The system of claim 6, further comprising: the fire extinguishing agent bottle group comprises a cabinet arranged in the battery cluster and spray heads arranged on the front panel of each battery module, wherein each battery module is fixed on the cabinet, the top of the cabinet is laid with a set of main pipeline and an electromagnetic valve, a plurality of sets of branch pipelines are fixed at a vertical beam in front of the cabinet and a vertical beam in the cabinet, one end of the electromagnetic valve is connected to the fire extinguishing agent bottle group through the set of main pipeline, and the other end of the electromagnetic valve is connected to the spray heads through the branch pipelines;
the fire-fighting host is used for opening the electromagnetic valve when receiving the fire alarm prompt message, so that the fire extinguishing agent in the fire extinguishing agent bottle group sequentially passes through the main pipeline, the electromagnetic valve, the branch pipeline and the spray head and is sprayed to the battery modules.
8. The system of claim 7,
the electromagnetic valve is a normally closed electromagnetic valve.
9. The system of claim 7,
the main pipeline and the branch pipelines are metal hoses.
10. The system of claim 6, wherein a photoelectric conversion module is further disposed in the high-pressure tank,
and the photoelectric conversion module is used for sending the fire alarm prompt message or the afterburning prompt message to the fire fighting host through an optical fiber by the alarm module.
CN202210944138.1A 2022-08-05 2022-08-05 Fire-fighting early warning method and system for high-voltage cascade battery system Pending CN115487445A (en)

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