CN116899148A - Intelligent multi-redundancy fire-fighting system and fire-fighting method for liquid-cooled energy storage container - Google Patents
Intelligent multi-redundancy fire-fighting system and fire-fighting method for liquid-cooled energy storage container Download PDFInfo
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- CN116899148A CN116899148A CN202310821121.1A CN202310821121A CN116899148A CN 116899148 A CN116899148 A CN 116899148A CN 202310821121 A CN202310821121 A CN 202310821121A CN 116899148 A CN116899148 A CN 116899148A
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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
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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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
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- 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
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- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses an intelligent multi-redundancy fire-fighting system and a fire-fighting method for a liquid-cooled energy storage container, and belongs to the technical field of energy storage containers. The intelligent temperature control system comprises a battery compartment, wherein a battery rack is arranged in the battery compartment, a battery pack is arranged on each battery rack, a plurality of batteries are arranged in each battery pack, and a first temperature acquisition module is respectively arranged on each battery; the battery pack is also provided with a battery management unit and a battery pack detector respectively; the output end of the first temperature acquisition module is in communication connection with the input end of the battery management unit; the battery rack is provided with a battery management system, the battery compartment is provided with a main controller, and the output end of each battery management unit is in communication connection with the input end of the battery management system. The invention can reduce the loss caused by thermal runaway of the battery, reduce damaged areas and achieve the effects of fire extinguishment and cooling before firefighters arrive at the scene.
Description
Technical Field
The invention relates to an intelligent multi-redundancy fire-fighting system and a fire-fighting method for a liquid-cooled energy storage container, and belongs to the technical field of energy storage containers.
Background
Along with the rapid development of energy storage technology, a certain number of energy storage devices are configured in related power stations, the integration level of an energy storage battery container is higher, an energy storage unit is a storage battery, certain heat can be generated in the charging and discharging process of the storage battery, and when the heat is out of control, flammable gas can be released, and fire and explosion hidden danger can exist. The existing product of liquid cooling energy storage fire control is only used for suppressing fire for 30min, and the problem of subsequent re-combustion and explosion of the battery is not considered. The field personnel cannot inhibit the fire by themselves and wait for the field treatment of the firefighters.
At present, the following fire protection systems are arranged in the energy storage liquid cooling battery compartment:
an energy storage system as described in patent publication No. CN218996994U, comprising: the accommodating cabin is internally provided with a sealing space; the mounting frame is positioned in the sealing space and is provided with at least one mounting space layer; the battery module, every installation space layer holding has a plurality of battery modules, a plurality of battery modules series connection of same installation space layer, and gaseous fire control unit, gaseous fire control unit is located the holding cabin, gaseous fire control unit includes smoke detector, hydrogen detector, fire control gas tank, gaseous fire control pipeline and gaseous fire control shower nozzle, the smoke detector corresponds every installation space layer or sets up between every two installation space layers, fire control gas tank connects gaseous fire control pipeline, gaseous fire control shower nozzle is connected on gaseous fire control pipeline, gaseous fire control shower nozzle corresponds every installation space layer or sets up between every two installation space layers.
The energy storage device cluster-level fire-fighting fire-extinguishing system disclosed in the patent publication No. CN213131681U is characterized in that a fire-fighting water interface is positioned outside a container and communicated with a fire-fighting pipeline; the fire-fighting pipeline extends into the container from the outer side of the container, extends to the upper part of the battery clusters, and a fire-fighting branch is connected between each battery cluster and the fire-fighting pipeline; the gas fire-extinguishing device is positioned in the container, a fire-extinguishing agent pipeline is connected between the gas fire-extinguishing device and the fire-extinguishing pipeline, a fire-extinguishing agent one-way valve is connected to the fire-extinguishing agent pipeline, and a fire-extinguishing water one-way valve is connected to the front end of the fire-extinguishing pipeline at the junction of the fire-extinguishing agent pipeline and the fire-extinguishing pipeline; the bottom of the container is provided with a drainage groove, and the drainage groove is provided with a water collecting port below the battery cluster; the drainage outlet is communicated with the drainage groove. Based on the technical scheme, fire control can be realized by utilizing the continuous characteristics of fire fighting water and uninterrupted cooling, so that the aim of extinguishing fire can be achieved most effectively; the problem that the battery can have re-burning after the lack of inhibition measures after the fire extinguishing agent is released is solved.
The fire extinguishing device and the fire extinguishing method for the battery compartment disclosed in the patent publication No. CN113827893A are characterized in that a fire detection mechanism is arranged in the battery compartment and is close to a battery module; the exhaust mechanism is arranged in the battery compartment and is used for exhausting gas in the battery compartment; the liquid cooling fire suppression mechanism comprises a liquid cooling pipeline and a fire suppression nozzle arranged on the liquid cooling pipeline, wherein the fire suppression nozzle is used for supplying liquid cooling fire suppression medium to spray out; the fire detection mechanism, the air exhaust mechanism and the fire suppression nozzle are all electrically connected with the controller, the fire detection mechanism is configured to detect fire occurrence signals and send the detected fire occurrence signals to the controller, and the controller is configured to control the air exhaust mechanism and the fire suppression nozzle to be synchronously opened according to the fire occurrence signals. According to the invention, the battery module is continuously cooled by the liquid cooling fire suppression mechanism, and simultaneously the exhaust and liquid cooling fire suppression medium cooling are carried out in the battery compartment when a fire disaster occurs, so that the fire disaster is rapidly suppressed and extinguished, and the fire extinguishing efficiency is improved.
And in addition to the following:
1, aiming at the whole cabin level, detecting and extinguishing fire in a partition.
2, aiming at the whole cluster of battery frames, each battery frame is detected and extinguished in a partition mode, the pipeline is connected with the whole cluster, the reserved water system interface is connected with the whole cluster of pipelines, and water can be filled from the outside after extinguishment.
And 3, aiming at the battery packs, performing detection on the whole cluster of battery frames, and suppressing the connection of a pipeline to each individual battery pack to suppress open fire by using liquid-cooled cooling liquid for the battery packs.
Therefore, since the battery has the reburning property after thermal runaway, the automatic fire extinguishing system adopted in the mode can extinguish the fire in a short time after the fire disaster occurs, but the battery cannot be cooled, the use place of the energy storage container is a remote area, firefighters and the like cannot reach the scene within half an hour, and the battery has the reburning property again, so that larger fire disasters, explosions and the like are caused.
Therefore, it is necessary to design an intelligent multi-redundancy fire-fighting system and fire-fighting method for a liquid-cooled energy storage container to solve the above problems.
Disclosure of Invention
Aiming at the technical problems mentioned in the background art, the invention aims at detecting smoke, carbon monoxide, VOC and temperature in a battery pack in multiple aspects, and combining the two to one to prevent the system from misreporting and misoperation, thereby achieving accurate detection. When the battery thermal runaway happens, accurate positioning is realized, the clean fire extinguishing gas is used for extinguishing a fire, after spraying is finished, liquid cooling liquid is injected, the battery is continuously cooled, the battery is ensured to be unable to reach the thermal runaway state, and further, the battery is ensured not to be reburned and explode. In addition, fire water interfaces are reserved for emergency fire control and extinguishment. Thereby solving the problem that the battery compartment can be reburning and exploding again before the firefighter does not arrive.
The method is realized by the following technical scheme:
the intelligent multi-redundancy fire-fighting system for the liquid-cooled energy storage container comprises a battery compartment, wherein a battery rack is arranged in the battery compartment, a battery pack is arranged on each battery rack, a plurality of batteries are arranged in each battery pack, and a first temperature acquisition module is respectively arranged on each battery; the battery pack is also provided with a battery management unit and a battery pack detector respectively; the output end of the first temperature acquisition module is in communication connection with the input end of the battery management unit; a battery management system is arranged on the battery rack;
the battery compartment is provided with a second temperature acquisition module, a smoke detector and a main controller, the output end of each battery management unit is in communication connection with the input end of the battery management system, and the output end of each battery management system is electrically connected with the main controller; the output end of each battery pack detector, the output end of the second temperature acquisition module and the output end of the smoke detector are electrically connected with the input end of the main controller;
the fire-fighting system is further arranged in the battery compartment and comprises a fire-fighting unit and a liquid cooling unit, the outlet end of the fire-fighting unit is respectively connected with a gas pipeline and a gas compartment pipeline through a tee joint, the other end of the gas pipeline is communicated with a first pipeline, and the other end of the gas compartment pipeline extends into the battery compartment; the outlet end of the liquid cooling unit is communicated with a liquid cooling pipeline, one end of the liquid cooling pipeline is communicated with a first pipeline, the other side of the first pipeline is respectively communicated with a plurality of second pipelines, each second pipeline is respectively communicated with a plurality of third pipelines, and one end of each third pipeline is respectively communicated into each layer of battery compartment in the battery rack;
the main controller is respectively and electrically connected with the liquid cooling unit and the fire-fighting unit; the main controller receives the temperature signal of the battery pack transmitted by the first temperature acquisition module through the battery management unit and the battery management system, the detection parameter signal of the battery pack transmitted by the battery pack detector, the battery compartment temperature signal transmitted by the second temperature acquisition module and the battery compartment detection parameter signal transmitted by the smoke detector, so that independent or integral fire-fighting operation of the liquid cooling unit and the fire-fighting unit is controlled.
As a preferred example, the number of battery frames in the battery compartment is plural, the number of battery packs on each battery frame is plural, and the plural battery packs are arranged on the battery frame in the height direction of the battery frame.
As a preferable example, the gas pipeline is sequentially communicated with a first electromagnetic valve and a first one-way valve from the fire-fighting unit to the first pipeline, and the main controller is respectively and electrically connected with the first electromagnetic valve and the first one-way valve.
As a preferred example, the spray water pipe is installed at the top of the battery compartment, a plurality of spray heads are communicated with the spray water pipe, and the outlet end of each spray head is vertically downward.
As a preferred example, the gas cabin pipeline is sequentially communicated with a second electromagnetic valve and a cabin gas nozzle from the fire-fighting unit to the battery cabin, and the cabin gas nozzle is positioned at the end part of the gas cabin pipeline extending into the battery cabin.
As a preferable example, the liquid cooling pipeline is sequentially communicated with a liquid cooling pipeline electromagnetic valve and a second one-way valve from the liquid cooling unit to the first pipeline.
As a preferable example, the third pipeline is sequentially communicated with a sub-control valve and a nozzle from the connection part between the third pipeline and the second pipeline to the direction of the third pipeline extending into the battery compartment, each battery pack is further provided with a pressure relief valve, and the pressure of the fire extinguishing agent sprayed out by the nozzle is greater than that of the pressure relief valve.
As a preferred example, a plurality of cells are arranged in a cell pack in n rows by m columns in the height direction of the cell pack, and n and m are both positive integers.
As a preferred example, the indicators detected by the battery pack detector are indicators of CO, hydrogen, temperature, smoke, and VOC.
As a preferred example, the first line diameter is DN20, the second line diameter is DN15, and the gas chamber line diameter is DN25.
The intelligent multi-redundancy fire-fighting method based on the liquid cooling energy storage container comprises the following steps of:
when an alarm occurs or fire disaster occurs in the battery, firstly, a first temperature acquisition module acquires a temperature signal, and a main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the first temperature acquisition module acquires the temperature signal again, if the alarm requirement is not met, a battery pack detector detects a parameter signal, the parameter signal is transmitted to the main controller through a battery management unit and a battery management system, and the main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the battery pack detector detects the temperature signal again, if the alarm requirement is met, single-stage alarm and multi-stage alarm are started in sequence, and when the multi-stage alarm is performed, a fire-fighting fan on a fire-fighting unit is closed, and then fire extinguishing operation of the battery is completed through spraying, deflation and cooling liquid injection and inhibition of fire extinguishing agent;
or when the battery compartment generates an alarm or fire, firstly, the second temperature acquisition module acquires a temperature signal or the smoke detector detects a smoke signal, the signal is transmitted to the main controller, the main controller judges whether the alarm requirement is met or not, if not, the second temperature acquisition module detects the smoke again, if so, the single-stage alarm and the multi-stage alarm are started in sequence, the fire-fighting fan on the fire-fighting unit is closed at the moment, and then the fire-fighting operation of the battery compartment is completed through the spraying, the deflation, the injection of cooling liquid and the inhibition of the fire extinguishing agent.
Preferably, when the battery gives an alarm or a fire disaster occurs, after the fire-fighting unit closes the fan, the main controller respectively controls the first electromagnetic valve and the sub-control valve to open, so that the fire extinguishing agent in the fire-fighting unit reaches the battery in the battery pack through the gas pipeline, the first pipeline, the second pipeline, the third pipeline and the nozzle to perform fire extinguishing operation, and meanwhile, when the pressure in the battery pack is greater than 0.4MPa, the battery pack pressure release valve is passively opened, so that the battery pack is subjected to deflation operation, the fire extinguishing operation and the deflation operation are jointly inhibited, and then the main controller respectively controls the liquid cooling pipeline electromagnetic valve and the second one-way valve to open, so that the cooling liquid in the liquid cooling unit reaches the battery pack through the liquid cooling pipeline, the first pipeline, the second pipeline and the third pipeline to cool the battery pack;
when the battery compartment gives an alarm or a fire disaster occurs, after the fire-fighting unit closes the fan, the main controller controls the second electromagnetic valve to open, so that the fire extinguishing agent in the fire-fighting unit reaches the battery compartment through the gas cabin pipeline and the cabin gas nozzle to perform fire extinguishing operation, meanwhile, if the cabin gas pressure is more than 1100Pa, the automatic machine opens the pressure relief valve, and if the cabin gas pressure is less than 1100Pa, the pressure relief valve is automatically closed, so that the air release operation is performed in the battery pack, and the fire extinguishing operation and the air release operation are jointly inhibited.
As a preferred example, the method further comprises the steps of:
the battery compartment is also internally provided with a spray header which can be connected with external fire water, and the external fire water and the spray header on the spray header can be utilized to enable the external fire water to be sprayed out through the spray header to directly extinguish the fire of the battery compartment in a large range under the condition that a fire extinguishing system arranged in the battery compartment cannot completely prevent fire.
The beneficial effects of the invention are as follows: according to the invention, through various sensors and comprehensive fire control systems arranged in the battery pack and the battery compartment, three-dimensional comprehensive fire control from a single battery to the battery pack and the battery rack to the whole battery compartment is formed, so that loss caused by thermal runaway of the battery is furthest reduced in the battery compartment filled with the battery, three-dimensional monitoring from the minimum battery unit to the whole battery compartment can be furthest found and early-warned, damaged areas are furthest reduced, related treatment is fast carried out, loss is reduced, fire extinguishing and cooling effects can be achieved before firefighters arrive at the scene, larger effects are avoided, resources are saved, and emission is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the portion A in FIG. 1;
FIG. 3 is a schematic view of the portion B in FIG. 1;
FIG. 4 is a schematic view of the portion C in FIG. 1;
FIG. 5 is a schematic view of the position of a battery pack in a battery rack according to the present invention;
fig. 6 is a schematic view showing the structure of a single battery pack according to the present invention;
FIG. 7 is a flow chart of the fire extinguishing of the battery in the battery pack according to the present invention;
FIG. 8 is a flow chart of the fire suppression of the battery compartment in the present invention;
in the figure: a battery rack 1 and a first electromagnetic valve 2; a first one-way valve 3; a sub-control valve 4; a nozzle 5; a pressure release valve 6; a second electromagnetic valve 7; a cabin gas nozzle 8; a liquid cooling pipeline electromagnetic valve 9; a second one-way valve 10; a fire-fighting unit 11; a liquid cooling unit 12; a shower pipe 13; a tee 14; a gas line 15; a gas cabin line 16; a first pipe 17; a liquid cooling line 18; a second line 19; a third line 20; a shower head 21 and a battery pack 22; a battery 23; a first temperature acquisition module 24; a battery management unit 25; a battery pack detector 26.
Detailed Description
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-8, an intelligent multi-redundancy fire-fighting system for a liquid-cooled energy storage container comprises a battery compartment, wherein a battery frame 1 is installed in the battery compartment, a battery pack 22 is installed on each battery frame 1, a plurality of batteries 23 are installed in each battery pack 22, and a first temperature acquisition module 24 is respectively installed on each battery 23; the battery pack 22 is also provided with a battery management unit 25 and a battery pack detector, respectively; and the output end of the first temperature acquisition module 24 is in communication connection with the input end of the battery management unit 25; a battery management system is arranged on the battery frame 1;
the battery compartment is provided with a second temperature acquisition module, a smoke detector and a main controller, the output end of each battery management unit 25 is in communication connection with the input end of the battery management system, and the output end of each battery management system is electrically connected with the main controller; the output end of each battery pack detector 26, the output end of the second temperature acquisition module and the output end of the smoke detector are electrically connected with the input end of the main controller;
the fire-fighting system is further arranged in the battery compartment, the fire-fighting system comprises a fire-fighting unit 11 and a liquid cooling unit 12, the outlet end of the fire-fighting unit 12 is respectively connected with a gas pipeline 15 and a gas compartment pipeline 16 through a tee joint, the other end of the gas pipeline 15 is communicated with a first pipeline 17, and the other end of the gas compartment pipeline 16 extends into the battery compartment; the outlet end of the liquid cooling unit 12 is communicated with a liquid cooling pipeline 18, one end of the liquid cooling pipeline 18 is communicated with a first pipeline 17, the other side of the first pipeline 17 is respectively communicated with a plurality of second pipelines 19, each second pipeline 19 is respectively communicated with a plurality of third pipelines 20, and one end of each third pipeline 20 is respectively communicated into each layer of battery compartment in the battery rack 1;
the main controller is respectively and electrically connected with the liquid cooling unit 12 and the fire-fighting unit 13; the main controller receives the temperature signal of the battery pack 22 transmitted by the first temperature acquisition module 24 through the battery management unit 25 and the battery management system, the detection parameter signal of the battery pack 22 transmitted by the battery pack detector, the battery compartment temperature signal transmitted by the second temperature acquisition module and the battery compartment detection parameter signal transmitted by the smoke detector, so as to control the individual or integral fire-fighting operation of the liquid cooling unit 12 and the fire-fighting unit 11.
The number of battery frames 1 in the battery compartment is plural, the number of battery packs 22 on each battery frame 1 is plural, and the plurality of battery packs 22 are provided on the battery frame 1 in the height direction of the battery frame 1.
The gas pipeline 15 is sequentially communicated with the first electromagnetic valve 2 and the first one-way valve 3 from the fire-fighting unit 11 to the first pipeline 17, and the main controller is respectively and electrically connected with the first electromagnetic valve 2 and the first one-way valve 3.
The gas cabin pipeline 16 is sequentially communicated with the second electromagnetic valve 7 and the cabin gas nozzle 8 from the fire-fighting unit 11 to the battery cabin, and the cabin gas nozzle 8 is positioned at the end part of the gas cabin pipeline 16 extending into the battery cabin.
The liquid cooling pipeline 18 is sequentially communicated with a liquid cooling pipeline electromagnetic valve 9 and a second one-way valve 10 from the liquid cooling unit 12 to the first pipeline 17.
The third pipeline 20 is sequentially communicated with the sub-control valve 4 and the nozzle 5 from the joint between the third pipeline 20 and the second pipeline 19 to the direction of the third pipeline 20 extending into the battery compartment, and each battery pack 22 is also provided with a pressure release valve 6, and the pressure of the fire extinguishing agent sprayed by the nozzle 5 is greater than the pressure of the pressure release valve 6.
The plurality of cells 23 are arranged in the cell pack 22 in n rows by m columns in the cell pack height direction, and n and m are both positive integers.
The indicators detected by the battery pack detector 26 are indicators of CO, hydrogen, temperature, smoke, and VOC.
The first line 17 has a diameter DN20, the second line 19 has a diameter DN15, and the gas chamber line 16 has a diameter DN25.
The main controller is provided with an alarm module, and the main controller is linked with the fire-fighting system to perform fire-fighting operation, for example, the fire-fighting system is used for extinguishing fire, and the alarm module sends out alarm sound at the moment;
each battery pack 22 is mounted horizontally on a battery rack 27.
The intelligent multi-redundancy fire-fighting method based on the liquid cooling energy storage container comprises the following steps of:
when an alarm or fire disaster occurs in the battery 23, the first temperature acquisition module 24 acquires a temperature signal firstly, and the main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the first temperature acquisition module 24 acquires the temperature signal again, if the alarm requirement is not met, the battery pack detector detects a parameter signal (including signals of CO, hydrogen, temperature, smoke and VOC), the parameter signal is transmitted to the main controller through the battery management unit 25 and the battery management system, and the main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the battery pack detector detects the temperature signal again, and if the alarm requirement is met, the main controller sequentially starts a single-stage alarm (the alarm host or the monitoring host is needed to be displayed by the alarm host when the single-stage alarm is needed), and the multi-stage alarm (the multi-stage alarm can be displayed by the alarm host, and is electrically connected by the main controller so as to control the alarm of the acousto-optic alarm), and when the multi-stage alarm is performed, the fire-fighting fan on the fire-fighting unit 11 is closed, and then the fire extinguishing agent is blown out, deflated, the cooling liquid is injected and restrained so as to complete the battery operation;
or when the battery compartment generates an alarm or fire, firstly, the second temperature acquisition module acquires a temperature signal or a smoke detector detects a smoke signal, the signal is transmitted to the main controller, the main controller judges whether the alarm requirement is met or not, if not, the second temperature acquisition module detects the smoke signal again, if so, the single-stage alarm (the alarm host or the monitoring host on the main controller can be displayed by the alarm host or the monitoring host when the single-stage alarm is performed), the multi-stage alarm (the multi-stage alarm can be displayed by the alarm host or the monitoring host when the single-stage alarm is performed) and the multi-stage alarm (the multi-stage alarm can be performed by an externally matched audible and visual alarm which is electrically connected by the main controller so as to control the audible and visual alarm to alarm), and at the moment, the fire-fighting fan on the fire-fighting unit 11 is closed, and then the fire-fighting agent is sprayed, deflated, and the cooling liquid is injected and inhibited, so that the fire-fighting operation of the battery compartment is completed.
Preferably, when an alarm or fire occurs in the battery 23, the fire-fighting unit 11 is delayed for 5s after the fan is turned off, and then the main controller controls the second electromagnetic valve 9 and the second one-way valve 10 to be opened, so that the fire extinguishing agent in the fire-fighting unit 11 reaches the inside of the battery 23 through the gas cabin pipeline 16 and the cabin gas nozzle 8 to perform fire extinguishing operation (it is to be noted that, when the fire extinguishing agent is sprayed, the fire extinguishing agent is indicated by a deflation indicator lamp arranged on the battery pack 22 and is electrically connected with the main controller), and meanwhile, the main controller controls the pressure release valve 6 to be opened, so that the deflation operation is performed in the battery pack 22 for 10s, and the common inhibition time of the fire extinguishing operation and the deflation operation is 30min;
when the battery compartment gives an alarm or a fire disaster occurs, after the fire-fighting unit 11 turns off the fan, the delay is 5s, and then the main controller controls the second electromagnetic valve 9 and the second one-way valve 10 to open, so that the fire extinguishing agent in the fire-fighting unit 11 reaches the battery 23 through the gas compartment pipeline 16 and the cabin gas nozzle 8 to perform fire extinguishing operation (it is to be noted that, when the fire extinguishing agent is sprayed, the fire extinguishing agent is indicated by the deflation indicator lamp arranged on the battery pack 22 and is electrically connected with the main controller), and meanwhile, the main controller controls the pressure release valve 6 to open, so that the air release operation is performed for 10s in the battery pack 22, and the common inhibition time of the fire extinguishing operation and the air release operation is 30min.
It should be noted that, the top of the battery compartment is also provided with a spray header 13, and one end of the spray header 13 is communicated with an external fire-fighting water pipe (the purpose is to facilitate the fire fighter to communicate with the spray header 13 through a fire-fighting water source, and to be used for final fire extinguishment under the condition that the fire-fighting unit 11 and the liquid cooling unit 12 cannot extinguish fire), the spray header 13 is communicated with a plurality of spray headers 21, and the outlet end of each spray header 21 is vertically downward.
Working principle: as shown in fig. 1, when any one of the batteries 23 in the battery pack 22 is out of control, the detection index reaches the alarm through the first temperature acquisition module or the battery pack detector 26 (carbon monoxide, hydrogen, smoke, temperature, VOC, etc.), the multi-aspect detection is performed to prevent false alarm, the feedback signal is sent to the main controller, the main controller is started to extinguish fire, the first electromagnetic valve 2 and the first one-way valve 3 on the gas pipeline 15 are opened, the fire extinguishing agent is along the gas pipeline 15, the battery pack sub-control valve 4 is reached through the gas pipeline one-way valve 3, and the fire extinguishing agent is injected into the battery pack 22 through the nozzle 5.
Continuously spraying the whole tank of fire extinguishing agent (the calculated amount of the fire extinguishing agent is calculated according to the whole battery compartment, the fire extinguishing agent is arranged in a fire-fighting unit), wherein the spraying pressure is larger than the pressure of a pressure relief valve 6 of a battery pack 22, when the fire extinguishing agent is continuously sprayed, the fire extinguishing agent firstly plays a role in extinguishing fire, and then continuously sprayed, the fire extinguishing agent is discharged while absorbing heat to the whole battery compartment through the pressure relief valve 6, so that the inhibition state in the compartment is maintained, and no fire is generated;
after the injection is completed, directly taking one path from the liquid cooling unit 12, opening the liquid cooling pipeline electromagnetic valve 9 and the second one-way valve 10, injecting liquid cooling liquid into the gas pipeline 15, continuously cooling the battery, ensuring that the battery cannot reach a thermal runaway state, and further ensuring that the battery is not reburned and exploded;
the problem can be solved by oneself before the firefighter does not arrive, and a conventional whole-cabin gas-spraying fire-extinguishing system is reserved for the electric fire in the whole battery cabin, namely, the fire extinguishing agent is discharged to the whole battery cabin through the second electromagnetic valve 7 and the cabin gas nozzle 8.
If special conditions occur, fire is not extinguished, a spray header interface is reserved outside, water can be received and poured by a scene or a firefighter, and under the condition that a fire extinguishing system arranged in a battery compartment cannot completely prevent fire, electromagnetic valves externally connected with fire water on the spray header are utilized, so that spray headers in the spray header and on the spray header can enable externally connected fire water to be sprayed out through the spray header, and the battery compartment can be directly extinguished in a large range.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a many redundant fire extinguishing systems of liquid cooling energy storage container intelligence, includes the battery compartment, install the battery frame in the battery compartment, every install the battery package on the battery frame, its characterized in that: a plurality of batteries are arranged in each battery pack, and each battery is provided with a first temperature acquisition module; the battery pack is also provided with a battery management unit and a battery pack detector respectively; the output end of the first temperature acquisition module is in communication connection with the input end of the battery management unit; a battery management system is arranged on the battery rack;
the battery compartment is provided with a second temperature acquisition module, a smoke detector and a main controller, the output end of each battery management unit is in communication connection with the input end of the battery management system, and the output end of each battery management system is electrically connected with the main controller; the output end of each battery pack detector, the output end of the second temperature acquisition module and the output end of the smoke detector are electrically connected with the input end of the main controller;
the fire-fighting system is further arranged in the battery compartment and comprises a fire-fighting unit and a liquid cooling unit, the outlet end of the fire-fighting unit is respectively connected with a gas pipeline and a gas compartment pipeline through a tee joint, the other end of the gas pipeline is communicated with a first pipeline, and the other end of the gas compartment pipeline extends into the battery compartment; the outlet end of the liquid cooling unit is communicated with a liquid cooling pipeline, one end of the liquid cooling pipeline is communicated with a first pipeline, the other side of the first pipeline is respectively communicated with a plurality of second pipelines, each second pipeline is respectively communicated with a plurality of third pipelines, and one end of each third pipeline is respectively communicated into each layer of battery compartment in the battery rack;
the main controller is respectively and electrically connected with the liquid cooling unit and the fire-fighting unit; the main controller receives the temperature signal of the battery pack transmitted by the first temperature acquisition module through the battery management unit and the battery management system, the detection parameter signal of the battery pack transmitted by the battery pack detector, the battery compartment temperature signal transmitted by the second temperature acquisition module and the battery compartment detection parameter signal transmitted by the smoke detector, so that independent or integral fire-fighting operation of the liquid cooling unit and the fire-fighting unit is controlled.
2. The intelligent multi-redundancy fire-fighting system for the liquid-cooled energy storage container according to claim 1, wherein the number of battery frames in the battery compartment is multiple, the number of battery packs on each battery frame is also multiple, and the multiple battery packs are arranged on the battery frame along the height direction of the battery frame.
3. The intelligent multi-redundant fire protection system for a liquid-cooled energy storage container of claim 1, wherein: the gas pipeline is sequentially communicated with a first electromagnetic valve and a first one-way valve from the fire-fighting unit to the first pipeline, and the main controller is respectively and electrically connected with the first electromagnetic valve and the first one-way valve.
4. A liquid cooled energy storage container intelligent multi-redundant fire protection system according to claim 3, wherein: the gas cabin pipeline is sequentially communicated with a second electromagnetic valve and a cabin gas nozzle from the fire-fighting unit to the battery cabin, and the cabin gas nozzle is positioned at the end part of the gas cabin pipeline extending into the battery cabin.
5. The intelligent multi-redundant fire protection system for a liquid-cooled energy storage container of claim 1, wherein: the liquid cooling pipeline is sequentially communicated with a liquid cooling pipeline electromagnetic valve and a second one-way valve from the liquid cooling unit to the first pipeline.
6. The intelligent multi-redundant fire protection system for a liquid-cooled energy storage container of claim 1, wherein: the third pipeline is sequentially communicated with a sub-control valve and a nozzle from the joint between the third pipeline and the second pipeline to the direction of the third pipeline extending into the battery compartment, each battery pack is further provided with a pressure relief valve, and the pressure of the fire extinguishing agent sprayed out by the nozzle is greater than that of the pressure relief valve.
7. The intelligent multi-redundant fire protection system for a liquid-cooled energy storage container of claim 1, wherein: the indexes detected by the battery pack detector are the indexes of CO, hydrogen, temperature, smoke and VOC.
8. A method of intelligent multi-redundant fire protection based on a liquid cooled energy storage container as claimed in any one of claims 1 to 7, comprising the steps of:
when an alarm occurs or fire disaster occurs in the battery, firstly, a first temperature acquisition module acquires a temperature signal, and a main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the first temperature acquisition module acquires the temperature signal again, if the alarm requirement is not met, a battery pack detector detects a parameter signal, the parameter signal is transmitted to the main controller through a battery management unit and a battery management system, and the main controller judges whether the alarm requirement is met, if the alarm requirement is not met, the battery pack detector detects the temperature signal again, if the alarm requirement is met, single-stage alarm and multi-stage alarm are started in sequence, and when the multi-stage alarm is performed, a fire-fighting fan on a fire-fighting unit is closed, and then fire extinguishing operation of the battery is completed through spraying, deflation and cooling liquid injection and inhibition of fire extinguishing agent;
or when the battery compartment generates an alarm or fire, firstly, the second temperature acquisition module acquires a temperature signal or the smoke detector detects a smoke signal, the signal is transmitted to the main controller, the main controller judges whether the alarm requirement is met or not, if not, the second temperature acquisition module detects the smoke again, if so, the single-stage alarm and the multi-stage alarm are started in sequence, the fire-fighting fan on the fire-fighting unit is closed at the moment, and then the fire-fighting operation of the battery compartment is completed through the spraying, the deflation, the injection of cooling liquid and the inhibition of the fire extinguishing agent.
9. The intelligent multi-redundancy fire-fighting method for the liquid-cooled energy storage container according to claim 8, wherein when an alarm occurs to a battery or a fire disaster occurs, after a fire-fighting unit is closed, a main controller respectively controls a first electromagnetic valve and a branch control valve to be opened, so that fire extinguishing agent in the fire-fighting unit reaches the battery in the battery pack through a gas pipeline, a first pipeline, a second pipeline, a third pipeline and a nozzle to perform fire extinguishing operation, and meanwhile, when the pressure in the battery pack is greater than 0.4MPa, a battery pack pressure release valve is passively opened to perform gas release operation in the battery pack, the fire extinguishing operation and the gas release operation are jointly inhibited, and then the main controller respectively controls the opening of a liquid-cooled pipeline electromagnetic valve to enable cooling liquid in the liquid-cooled unit to reach the battery pack through the liquid-cooled pipeline, the first pipeline, the second pipeline and the third pipeline to cool the battery pack;
when the battery compartment gives an alarm or a fire disaster occurs, after the fire-fighting unit closes the fan, the main controller controls the second electromagnetic valve to open, so that the fire extinguishing agent in the fire-fighting unit reaches the battery compartment through the gas cabin pipeline and the cabin gas nozzle to perform fire extinguishing operation, meanwhile, if the cabin gas pressure is more than 1100Pa, the automatic machine opens the pressure relief valve, and if the cabin gas pressure is less than 1100Pa, the pressure relief valve is automatically closed, so that the air release operation is performed in the battery compartment, and the fire extinguishing operation and the air release operation are jointly inhibited.
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| CN202310821121.1A CN116899148A (en) | 2023-07-05 | 2023-07-05 | Intelligent multi-redundancy fire-fighting system and fire-fighting method for liquid-cooled energy storage container |
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| CN202310821121.1A CN116899148A (en) | 2023-07-05 | 2023-07-05 | Intelligent multi-redundancy fire-fighting system and fire-fighting method for liquid-cooled energy storage container |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117855681A (en) * | 2024-01-22 | 2024-04-09 | 清安储能技术(重庆)有限公司 | Pipeline system of energy storage container and installation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117855681A (en) * | 2024-01-22 | 2024-04-09 | 清安储能技术(重庆)有限公司 | Pipeline system of energy storage container and installation method |
| CN117855681B (en) * | 2024-01-22 | 2024-10-29 | 清安储能技术(重庆)有限公司 | Pipeline system of energy storage container and installation method |
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