CN113413558A - Fire fighting method and system for prefabricated cabin type lithium iron phosphate battery energy storage power station - Google Patents
Fire fighting method and system for prefabricated cabin type lithium iron phosphate battery energy storage power station Download PDFInfo
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- CN113413558A CN113413558A CN202110702229.XA CN202110702229A CN113413558A CN 113413558 A CN113413558 A CN 113413558A CN 202110702229 A CN202110702229 A CN 202110702229A CN 113413558 A CN113413558 A CN 113413558A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 25
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 238000004880 explosion Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a fire-fighting method and a fire-fighting system for a prefabricated cabin type lithium iron phosphate battery energy storage power station, wherein the method comprises the following steps: marking the position of the energy storage battery in the prefabricated cabin according to the planning of the module; placing an infrared distance meter at the central point of the prefabricated cabin, and carrying out peak and minimum point tests on each battery for 30s by the infrared distance meter; measuring the temperature of the battery module by using an infrared thermometer, and analyzing the measured temperature by using a control platform; testing the battery module by using an infrared gas detector; if H is detected2And CO, cutting off the battery module through the control platform. The invention judges whether the corresponding battery module is in the thermal runaway critical state or the thermal runaway state through each control platform, and can accurately judge the specific battery module in which the thermal runaway occurs, thereby controlling the corresponding battery moduleThe fire extinguishing agent nozzle sprays the fire extinguishing agent to extinguish fire, thereby avoiding the influence of large-scale spraying of the fire extinguishing agent on normal battery clusters and effectively saving resources.
Description
Technical Field
The invention belongs to the field of fire protection of energy storage power stations, relates to a prefabricated cabin type lithium iron phosphate battery energy storage power station, and particularly relates to a fire protection method and a fire protection system of the prefabricated cabin type lithium iron phosphate battery energy storage power station.
Background
One of the two major factors restricting the development of the lithium iron phosphate battery is safety, and the accidents of combustion and explosion of the electrochemical energy storage power station frequently occur. Therefore, flame retardant, fire extinguishing and explosion proof techniques must be rapidly improved.
At present, for the prefabricated cabin of lithium iron phosphate battery energy storage power station, adopt temperature detector, smoke detector etc. to detect the condition of a fire usually, when detecting the conflagration, open the fire extinguishing apparatus in the cabin, spray extinguishing agent and put out a fire. However, the situations of inaccurate detection and untimely action often occur at present; in addition, when a detector identifies that a certain battery pack is in fire, the fire extinguishing agent is comprehensively sprayed to the whole prefabricated cabin to extinguish the fire, on one hand, resource waste is caused, and on the other hand, the normal battery pack without the fire is also sprayed by the fire extinguishing agent, so that the repairing difficulty is high, and the time consumption is long.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a fire fighting method and a fire fighting system for a prefabricated cabin type lithium iron phosphate battery energy storage power station, which can effectively detect potential safety hazards before the energy storage power station is exploded and combusted, and meanwhile, measures are taken to avoid the danger of explosion and the like of the energy storage power station and greatly improve the operation safety of the energy storage power station.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a fire fighting method for a prefabricated cabin type lithium iron phosphate battery energy storage power station comprises the following steps:
marking the position of an energy storage battery in the prefabricated cabin according to the planning of the battery modules, fixing the position of each battery module in the prefabricated cabin, fixing the position of a fire extinguishing agent spray head, and marking the position;
placing the infrared distance measuring instrument at the central point of the prefabricated cabin, and recording the highest point D of each battery in each battery module1Lowest point D2The infrared distance meter tests the highest point and the lowest point of each battery for 30 s; the most initial D obtained1、D2The value is used as a reference value D1 0、D2 0Control platform pair measured D1 iAnd D2 iAnd a reference value D1 0、D2 0Carrying out comparison; if D is1 i-D1 0Not equal to 0 and D2 i-D2 0Not equal to 0, the battery bulge phenomenon of a single battery is shown, and the battery where the battery is located is cut off through the control platformA module;
the battery module is subjected to temperature measurement by adopting an infrared thermometer, the measured temperature is analyzed by the control platform, and the temperature of a single module is compared with the temperature TiAnd Ti-1And TiComparing the temperature with the temperature of other modules in the prefabricated cabin; if Ti-Ti-1Absolute value of < 0.5 ℃ and TiThe absolute value of the temperature of other batteries is less than 0.5 ℃, which indicates that the internal fault of the battery is further increased, the battery module is cut off through the control platform, meanwhile, the refrigeration effect is enhanced through the air conditioning system in the prefabricated cabin, and the fan is started to radiate the module;
testing the battery module by using an infrared gas detector; the control platform analyzes the components of the measured gas; if H is detected2CO then cuts off this battery module through control platform, opens through air conditioning system reinforcing refrigeration effect and fan in the prefabricated cabin simultaneously and dispels the heat for the module, and in addition, control platform sends the instruction to the fire extinguishing agent shower nozzle nearest from this battery module, sprays the fire extinguishing agent to this module, will catch fire the battery module and put out.
Moreover, one battery module corresponds to one infrared thermometer and one infrared gas detector.
A fire-fighting system of a prefabricated cabin type lithium iron phosphate battery energy storage power station comprises a fire-fighting module, an infrared distance meter, an infrared temperature meter, an infrared gas detector, a control platform, a power supply module and a cooling module,
the fire extinguishing module comprises a fire extinguishing agent storage tank, a fire extinguishing pipeline and a spray head;
the data collected by the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector are transmitted to the control platform through RS 485;
the control platform receives data of the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector, analyzes and compares the data, and controls the fire extinguishing module to be opened or closed;
the power supply module provides power for the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector;
the cooling module comprises a fan and an air conditioner, and each battery module is correspondingly provided with the fan.
The spray head is a 360-degree rotary spray head.
The infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector are self-configured with lithium batteries.
The invention has the advantages and positive effects that:
1) the method adopts an infrared technology, measures the highest point and the lowest point of the battery through an infrared distance meter, judges whether the battery bulges or not through the comparison of the two points and the change of original data, can accurately obtain a single battery with a fault bulge, and is simple, accurate and easy to implement;
2) the fault state of the battery module can be accurately and precisely judged based on data measured by the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector, different measures are taken for different fault states, the battery module can be prevented from developing into a thermal runaway state in a critical state to a certain extent, more effective inhibition can be carried out in the thermal runaway state, and further expansion of loss is prevented;
3) whether the corresponding battery module is in a thermal runaway critical state or a thermal runaway state is judged through each control platform, and the specific battery module in which the thermal runaway occurs can be accurately judged, so that the corresponding fire extinguishing agent spray head is controlled to spray a fire extinguishing agent to extinguish a fire, the influence of large-scale spray of the fire extinguishing agent on a normal battery cluster is avoided, and resources are effectively saved;
4) when a single battery bulge is detected and the temperature of the battery module rises, the refrigerating effect is enhanced through the air conditioning system when the surface temperature rises and the abnormality does not occur, the fan is turned on, and the occurrence of thermal runaway can be avoided to a certain extent.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic view of the apparatus of the present invention.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
A fire fighting method for a prefabricated cabin type lithium iron phosphate battery energy storage power station comprises the following steps:
step 1: and (3) position determination: marking the position of an energy storage battery in the prefabricated cabin according to the planning of the battery modules, fixing the position of each battery module in the prefabricated cabin, fixing the position of a fire extinguishing agent spray head, and marking the position;
step 2: infrared distance measurement: placing the infrared distance measuring instrument at the central point of the prefabricated cabin, and recording the highest point D of each battery in each battery module1Lowest point D2The infrared distance meter tests the highest point and the lowest point of each battery for 30 s;
and step 3: infrared temperature measurement: measuring the temperature of the battery module;
and 4, step 4: and (3) infrared gas testing: testing the battery module by using infrared gas;
the information acquired in the step 1, the step 2, the step 3 and the step 4 is transmitted to a control platform;
wherein the fire extinguishing agent nozzle in the step 1 can rotate 360 degrees;
wherein the most initial D obtained in step 21、D2Value as reference value D1 0、D2 0；
The infrared temperature measurement in the step 3 and the infrared gas test in the step 4 correspond to the battery modules in the step 1, and one battery module corresponds to one infrared temperature measurement and one infrared gas test;
wherein the control platform is used for measuring D in the step 21 iAnd D2 iAnd a reference value D1 0、D2 0Carrying out comparison;
wherein the control platform analyzes the temperatures measured in step 3 and compares T the temperature for a single moduleiAnd Ti-1And TiComparing the temperature with the temperature of other modules in the prefabricated cabin;
wherein the control platform performs a composition analysis of the gas measured in step 4 due to the infrared H2The absorption wavelength is different from that of CO, and therefore, H can be analyzed2、CO；
Wherein, if D1 i-D1 0Not equal to 0 and D2 i-D2 0Not equal to 0, the battery bulge phenomenon of a single battery is shown, at the moment, the internal part of the battery is just failed, and the battery module where the battery is located is cut off through the control platform, so that the further occurrence of the failure is avoided;
wherein if Ti-Ti-1Absolute value of < 0.5 ℃ and TiThe absolute value of the temperature of other batteries is less than 0.5 ℃, the internal fault of the battery is further increased, the battery module is cut off through the control platform, meanwhile, the refrigeration effect is enhanced through the air conditioning system in the prefabricated cabin, the fan is started, the module dissipates heat, and the further occurrence of the fault is avoided;
wherein, if H is detected in the infrared gas test in step 42CO, show that the battery is inside to have produced a large amount of gases, the pressure that the inside gas of battery produced is greater than the pressure of relief valve, the energy is concentrated, this moment, cut off this battery module through control platform, open through air conditioning system reinforcing refrigeration effect and fan in the prefabricated cabin simultaneously, the module heat dissipation, in addition, control platform sends the instruction to the fire extinguishing agent shower nozzle nearest from this battery module, sprays the fire extinguishing agent to this module, will catch fire the battery module and put out, prevent that the conflagration from further diffusing.
Based on the method, the fire-fighting system of the prefabricated cabin type lithium iron phosphate battery energy storage power station is designed and comprises a fire-fighting module, an infrared distance meter, an infrared thermometer, an infrared gas detector, a control platform and a power module.
The fire extinguishing module comprises a fire extinguishing agent, a fire extinguishing agent storage tank, a pipeline and a spray head, and the fire extinguishing module is opened or closed by receiving an instruction of the control platform;
the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector have a data acquisition function, and acquired data are transmitted to the control platform through RS 485;
the control platform has a basic function of data analysis;
the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector are self-configured with lithium batteries, and when the power supply module loses power, the instruments are automatically charged to meet normal use;
the power supply module provides power for the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector.
FIG. 1 is a flow chart of the method of the present invention, as shown in the figure, each battery module in a prefabricated cabin type energy storage power station records position information, and taking No. 1 battery module as an example, when the No. 1 battery module starts to operate, an infrared distance meter measures initial highest point and lowest point D1 0、D2 0Measuring the highest point and the lowest point every 30s by the infrared distance measuring instrument, and comparing the highest point and the lowest point with the initial values; the infrared thermometer measures the temperature of the battery module in operation, and compares the temperature with the temperature measured at the last time and the temperature of other battery modules in the prefabricated cabin; the infrared gas analyzer analyzes the battery module gas to determine whether H is generated2And CO. If D is1 i-D1 0Not equal to 0 and D2 i-D2 0Not equal to 0, cutting off the battery module where the battery is located through the control platform; if all the running conditions are met, continuing to monitor, and if T is meti-Ti-1Absolute value of < 0.5 ℃ and TiThe absolute value of the temperature of other batteries is less than 0.5 ℃, the battery module is cut off through the control platform, meanwhile, the refrigeration effect is enhanced through an air conditioning system in the prefabricated cabin, the fan is started, and the module dissipates heat; if H is detected in the infrared gas test2CO cuts off this battery module through control platform, opens through air conditioning system reinforcing refrigeration effect and fan in the prefabricated cabin simultaneously, and the module heat dissipation, in addition, control platform sends the instruction to the fire extinguishing agent shower nozzle nearest from this battery module, sprays the fire extinguishing agent to this module. And if various operation conditions are met, the system is normally operated and monitoring is continued.
Fig. 2 is a schematic diagram of the device of the invention, as shown in the figure, a plurality of battery modules 1 composed of a plurality of batteries 2 and a set of fire-fighting system 9 are arranged in the device, wherein the fire-fighting system is composed of a fire extinguishing agent tank 10, a pipeline 11, an electromagnetic valve 12 and a spray head 13 capable of rotating 360 degrees, fans 5 with the same number as the modules, an air conditioner 7 with a refrigeration function and an infrared distance meter 6 positioned at the central point of an energy storage power station, an infrared thermometer 3 and an infrared gas detector 4 are arranged outside each module, and the fire-fighting system, the battery modules, the fans, the infrared thermometers, the infrared distance meters, the infrared gas detectors and the air conditioner are connected with a control platform 8.
The position information of the module is pre-stored in the control platform, and the infrared distance meter measures the highest point and the lowest point of each battery before the energy storage power station normally operates and records the highest point and the lowest point in the control platform.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept, and these changes and modifications are all within the scope of the present invention.
Claims (5)
1. A fire fighting method for a prefabricated cabin type lithium iron phosphate battery energy storage power station comprises the following steps:
marking the position of an energy storage battery in the prefabricated cabin according to the planning of the battery modules, fixing the position of each battery module in the prefabricated cabin, fixing the position of a fire extinguishing agent spray head, and marking the position;
placing the infrared distance measuring instrument at the central point of the prefabricated cabin, and recording the highest point D of each battery in each battery module1Lowest point D2The infrared distance meter tests the highest point and the lowest point of each battery for 30 s; the most initial D obtained1、D2The value is used as a reference value D1 0、D2 0Control platform pair measured D1 iAnd D2 iAnd a reference value D1 0、D2 0Carrying out comparison; if D is1 i-D1 0Not equal to 0 and D2 i-D2 0Not equal to 0, if the battery bulge phenomenon occurs to a single battery, the battery module where the battery is located is cut off through the control platform;
the battery module is subjected to temperature measurement by adopting an infrared thermometer, the measured temperature is analyzed by the control platform, and the temperature of a single module is compared with the temperature TiAnd Ti-1And TiAnd preComparing the temperatures of other modules in the cabin; if Ti-Ti-1Absolute value of < 0.5 ℃ and TiThe absolute value of the temperature of other batteries is less than 0.5 ℃, which indicates that the internal fault of the battery is further increased, the battery module is cut off through the control platform, meanwhile, the refrigeration effect is enhanced through the air conditioning system in the prefabricated cabin, and the fan is started to radiate the module;
testing the battery module by using an infrared gas detector; the control platform analyzes the components of the measured gas; if H is detected2CO then cuts off this battery module through control platform, opens through air conditioning system reinforcing refrigeration effect and fan in the prefabricated cabin simultaneously and dispels the heat for the module, and in addition, control platform sends the instruction to the fire extinguishing agent shower nozzle nearest from this battery module, sprays the fire extinguishing agent to this module, will catch fire the battery module and put out.
2. The fire fighting method for prefabricated cabin type lithium iron phosphate battery energy storage power station according to claim 1, characterized in that: one battery module corresponds to one infrared thermometer and one infrared gas detector.
3. The utility model provides a fire extinguishing system of prefabricated cabin formula lithium iron phosphate battery energy storage power station which characterized in that: comprises a fire extinguishing module, an infrared distance measuring instrument, an infrared temperature measuring instrument, an infrared gas detector, a control platform, a power supply module and a cooling module,
the fire extinguishing module comprises a fire extinguishing agent storage tank, a fire extinguishing pipeline and a spray head;
the data collected by the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector are transmitted to the control platform through RS 485;
the control platform receives data of the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector, analyzes and compares the data, and controls the fire extinguishing module to be opened or closed;
the power supply module provides power for the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector;
the cooling module comprises a fan and an air conditioner, and each battery module is correspondingly provided with the fan.
4. The system of claim 3, wherein: the spray head is a 360-degree rotary spray head.
5. The system of claim 3, wherein: the infrared distance measuring instrument, the infrared temperature measuring instrument and the infrared gas detector are self-configured with lithium batteries.
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