CN110634262A - Fire early warning method for battery prefabricated cabin of lithium iron phosphate energy storage power station - Google Patents
Fire early warning method for battery prefabricated cabin of lithium iron phosphate energy storage power station Download PDFInfo
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- CN110634262A CN110634262A CN201910760100.7A CN201910760100A CN110634262A CN 110634262 A CN110634262 A CN 110634262A CN 201910760100 A CN201910760100 A CN 201910760100A CN 110634262 A CN110634262 A CN 110634262A
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- 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 45
- 238000004146 energy storage Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000003595 mist Substances 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 18
- 239000000779 smoke Substances 0.000 claims description 18
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 8
- 238000004880 explosion Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007480 spreading Effects 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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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
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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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- General Physics & Mathematics (AREA)
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Abstract
The invention provides a fire early warning method for a prefabricated battery compartment of a lithium iron phosphate energy storage power station, and relates to the field of fire fighting; a fire alarm controller, a fire detection alarm system and a fire extinguishing system which are respectively connected with the fire alarm controller, a BMS battery management system and a combustible gas explosion-proof system connected with the BMS battery management system are arranged in the battery prefabricated cabin; according to the invention, a combustible gas monitoring device is added in a fire detection alarm system, alarm thresholds in early warning and later warning stages are respectively set during combustible gas monitoring, and the actions of a combustible gas explosion-proof system and a fire extinguishing system are respectively controlled in different alarm stages; according to the two-stage multi-level fire early warning set by combustible gas monitoring, the accuracy and reliability of the thermal runaway detection early warning of the lithium iron phosphate battery are effectively improved, and the safe operation of an energy storage system is guaranteed.
Description
Technical Field
The invention relates to the field of fire fighting, in particular to a fire early warning method for a prefabricated battery compartment of a lithium iron phosphate energy storage power station.
Background
The lithium iron phosphate battery has a safety problem which cannot be ignored. In large-scale energy storage application occasions, the possibility and the danger degree of accidents can be greatly improved by increasing the quality, the quantity, the capacity and the energy density of batteries, in addition, the number of field personnel in the energy storage application working condition is less, if early warning is not timely and treatment is unreasonable, chain disasters affecting the whole system can occur, and impact is caused on the electric energy quality and the stability of a local power grid. The lithium iron phosphate battery can release obvious characteristic parameters before thermal runaway occurs, and whether the battery is about to generate the thermal runaway can be judged through the change of the characteristic parameters. The fire alarm design of the battery prefabricated cabin of the lithium iron phosphate energy storage power station refers to GB50116 'design specification for fire automatic alarm system', and only a typical temperature-sensing and smoke-sensing detector is configured in the cabin.
Relevant experimental research shows that the lithium iron phosphate battery firstly releases CO and H in the early stage of thermal runaway2And the typical smoke and temperature sensing fire detector is not suitable for early warning of thermal runaway of the lithium iron phosphate battery.
Disclosure of Invention
The invention aims to provide a fire early warning method for a prefabricated battery compartment of a lithium iron phosphate energy storage power station.
In order to achieve the above purpose, the invention provides the following technical scheme: a fire early warning method for a battery prefabricated cabin of a lithium iron phosphate energy storage power station improves accuracy and reliability of thermal runaway detection and early warning of a lithium iron phosphate battery by adding combustible gas monitoring and setting two-stage multi-level fire early warning according to the combustible gas monitoring, and ensures safe operation of an energy storage system.
The battery prefabricated cabin is internally provided with a fire alarm controller, a BMS battery management system, a fire detection alarm system, a combustible gas explosion-proof system and a fire extinguishing system; the fire detection alarm system and the fire extinguishing system are respectively in communication connection with the fire alarm controller, and the combustible gas explosion-proof system is in communication connection with the BMS battery management system; the fire detection alarm system comprises a plurality of combustible gas detectors arranged at the top of a battery prefabricated cabin, and the combustible gas detectors are in communication connection with a BMS battery management system; the combustible gas detector is provided with a first threshold value and a second threshold value of the concentration of the combustible gas, which are sent out by the combustible gas detector; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a first threshold value, starting early warning, linking with a BMS battery management system to start a combustible gas explosion-proof system, triggering a PCS (personal communication System) to stop, and tripping off a cabin-level main breaker and a cluster-level relay; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a second threshold value, the later-stage early warning is started, the BMS battery management system is linked to close the combustible gas explosion-proof system, the PCS is triggered to shut down, and meanwhile, the fire alarm controller is linked to start the fire extinguishing system.
Further, when two or more combustible gas detectors detect that the concentration of the combustible gas in the current battery prefabricated cabin reaches a second threshold value and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the fire alarm controller to automatically start the fire extinguishing system.
Furthermore, the fire detection alarm system is also provided with a plurality of temperature detectors for monitoring the temperature in the battery prefabricated cabin and a plurality of smoke detectors for monitoring the smoke concentration in the battery prefabricated cabin, and the temperature detectors and the smoke detectors are respectively in communication connection with the fire alarm controller.
Further, when the concentration of the combustible gas detected by at least one combustible gas detector reaches a first threshold value, at least one temperature-sensing detector acts, and a cabin-level main circuit breaker trips, the fire detection alarm system is linked with a fire alarm controller to automatically start a fire extinguishing system; or when at least one temperature-sensitive detector and at least one smoke-sensitive detector act simultaneously and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the fire alarm controller to automatically start the fire extinguishing system.
Furthermore, the fire detection alarm system further comprises a manual alarm button, wherein the manual alarm button is in communication connection with the fire alarm controller and is used for being manually started by an operator when the set detector fails to normally start the combustible gas explosion-proof system and the fire extinguishing system.
Further, when the manual alarm button acts, any temperature-sensitive detector acts, any smoke-sensitive detector acts or any detection value of the combustible gas detector reaches a first threshold value, the fire detection alarm system is linked with the fire alarm controller to start the combustible gas explosion-proof system.
Further, the combustible gas explosion-proof system is characterized in that when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a first threshold value, the explosion-proof electric fan is started.
Furthermore, the fire extinguishing system adopts a water mist fire extinguishing system, and the water mist fire extinguishing system can effectively extinguish the fire of the battery prefabricated cabin.
According to the technical scheme, the fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station has the following beneficial effects that:
the invention discloses a fire early warning method for a battery prefabricated cabin of a lithium iron phosphate energy storage power station, which comprises a fire alarm controller, a fire detection alarm system and a fire extinguishing system, a BMS battery management system and a combustible gas explosion-proof system, wherein the fire alarm controller is arranged in the battery prefabricated cabin; the fire detection alarm system comprises a plurality of combustible gas detectors; according to the invention, the combustible gas detector is additionally arranged in the fire detection alarm system, and alarm thresholds of an early warning stage and a later warning stage are respectively arranged in the combustible gas detector, so that the actions of the combustible gas explosion-proof system and the fire extinguishing system are respectively controlled in different alarm stages; according to the two-stage multi-level fire early warning set by combustible gas monitoring, the accuracy and reliability of the thermal runaway detection early warning of the lithium iron phosphate battery are effectively improved, and the safe operation of an energy storage system is guaranteed.
The fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station can quickly and effectively detect the thermal runaway state of the lithium iron phosphate battery, and meanwhile, the fire early warning method is intelligently linked with a BMS (battery management system), so that the concentration of combustible gas in the cabin is reduced, and the root cause of explosion is eliminated; the invention is not only suitable for the new construction of the lithium iron phosphate battery energy storage power station, but also can be used in the fire-fighting lifting engineering of the lithium iron phosphate battery energy storage power station; the invention has simple and convenient operation, control and use, can quickly know the battery failure, starts the fire extinguishing system in the shortest time, achieves the purposes of controlling explosion and extinguishing fire, and effectively controls the spreading and expansion of thermal runaway of the battery.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a structural diagram of a fire early warning method for a prefabricated battery compartment of a lithium iron phosphate energy storage power station according to the invention;
FIG. 2 is a flow chart of the fire early warning method for the prefabricated battery compartment of the lithium iron phosphate energy storage power station.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not intended to include all aspects of the present invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Based on the prior art, the iron phosphate lithium battery firstly escapes CO and H in the early stage of thermal runaway2The invention aims to provide a fire early warning method for a prefabricated cabin of a battery of a lithium iron phosphate energy storage power station, which can improve the effectiveness of early warning and identification of thermal runaway of the lithium iron phosphate battery, improve the accuracy of fire early warning, reduce the large-scale fire risk of the lithium iron phosphate energy storage system and ensure the safety of the energy storage system.
The fire early warning method for the prefabricated battery compartment of the lithium iron phosphate energy storage power station is further specifically described below with reference to the embodiment shown in the attached drawings.
Referring to fig. 1, the fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station comprises a fire alarm controller, a BMS battery management system, a fire detection alarm system, a combustible gas explosion-proof system and a fire extinguishing system which are arranged in the battery prefabricated cabin; the fire detection alarm system and the fire extinguishing system are respectively in communication connection with the fire alarm controller, and the combustible gas explosion-proof system is in communication connection with the BMS battery management system; the fire detection alarm system comprises a plurality of combustible gas detectors arranged at the top of a battery prefabricated cabin, and the combustible gas detectors are in communication connection with a BMS battery management system; the combustible gas detector is provided with a first threshold value and a second threshold value of the concentration of the combustible gas, which are sent out by the combustible gas detector; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a first threshold value, starting early warning, linking with a BMS battery management system to start a combustible gas explosion-proof system, triggering a PCS (personal communication System) to stop, and tripping off a cabin-level main breaker and a cluster-level relay; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a second threshold value, starting later-stage early warning, linking the BMS battery management system to close the combustible gas explosion-proof system, triggering the PCS to stop, and simultaneously linking the fire alarm controller to start the fire extinguishing system; the PCS shutdown triggered in the later early warning is mainly used for preventing the PCS from not completing tripping shutdown in the early warning and further judging that the PCS breaker has completed tripping.
Referring to fig. 2, a first threshold of the combustible gas concentration of the combustible gas detector of the invention may be set to 2% LEL, and a second threshold of the combustible gas concentration may be set to 4% LEL, where both the first threshold and the second threshold are lower than the set values in the existing fire and explosion protection detection, and accurate data of the first threshold and the second threshold may be set according to actual environmental factors and the like in the specific implementation process. According to the invention, by increasing the combustible gas monitoring process, the thermal runaway state of the lithium iron phosphate battery is quickly and effectively detected, the effectiveness of early warning and identification of the thermal runaway of the lithium iron phosphate battery and the accuracy of fire-fighting warning are improved, meanwhile, the multi-level fire warning of the battery prefabricated cabin of the lithium iron phosphate energy storage power station is realized by the two-stage warning linkage BMS battery management system arranged by the combustible gas detector, the fire extinguishing system is started within the shortest time, and the purposes of controlling explosion and extinguishing fire are achieved.
In the embodiment shown in fig. 2, the fire detection alarm system is further provided with a plurality of temperature detectors for monitoring the temperature in the battery prefabricated cabin, a plurality of smoke detectors for monitoring the smoke concentration in the battery prefabricated cabin and a manual alarm button, the temperature detectors, the smoke detectors and the manual alarm button are respectively in communication connection with the fire alarm controller, and the manual alarm button is used for being manually started by an operator when the set detectors cannot normally start the combustible gas explosion-proof system and the fire extinguishing system.
Wherein, the alarm mode and the gas explosion-proof system start-up when the combustible gas detector first threshold value set up to: when the manual alarm button acts, any temperature-sensitive detector acts, any smoke-sensitive detector acts or any detection value of the combustible gas detector reaches a first threshold value, the fire detection alarm system is linked with the BMS battery management system to start the combustible gas explosion-proof system, and the combustible gas explosion-proof system is started to start the explosion-proof electric fan, so that the concentration of the combustible gas in the battery prefabricated cabin is reduced.
The alarm mode when the combustible gas detector has the second threshold value and the starting of the fire extinguishing system are set as follows: when two or more combustible gas detectors detect that the concentration of the combustible gas in the current battery prefabricated cabin reaches a second threshold value and a cabin-level main breaker trips, the fire detection alarm system is linked with the BMS battery management system to close the combustible gas explosion-proof system and is linked with the fire alarm controller to automatically start the fire extinguishing system; or when the concentration of the combustible gas detected by at least one combustible gas detector reaches a first threshold value, at least one temperature-sensing detector acts, and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the fire alarm controller to automatically start the fire extinguishing system; or when at least one temperature-sensitive detector and at least one smoke-sensitive detector act simultaneously and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the fire alarm controller to automatically start the fire extinguishing system; the fire extinguishing system adopts a water mist fire extinguishing system with verified fire extinguishing effectiveness.
Specifically, with reference to the early warning flowchart shown in fig. 2, the method for early warning a fire in a prefabricated battery compartment of a lithium iron phosphate energy storage power station, disclosed by the invention, comprises the following steps of firstly setting a first threshold value and a second threshold value of a combustible gas detector through a fire alarm controller; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a first threshold value, starting early warning, linking with a BMS battery management system to start a combustible gas explosion-proof system, triggering a PCS (personal communication System) to stop, and tripping off a cabin-level main breaker and a cluster-level relay; when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a second threshold value, the later-stage early warning is started, the BMS battery management system is linked to close the combustible gas explosion-proof system, the PCS is triggered to shut down, and meanwhile, the fire alarm controller is linked to start the fire extinguishing system.
In the embodiment shown in the drawing, the combustible gas detector is H2The detector is generally uniformly and symmetrically arranged on the top in the battery prefabricated cabin; in addition, theAnd the interior and exterior of the battery prefabricated cabin are respectively provided with an audible and visual alarm, when the detection value of a manual alarm button, any temperature-sensitive detector, any smoke-sensitive detector or any combustible gas detector reaches a first threshold value, the indoor audible and visual alarm gives an alarm, and simultaneously the BMS battery management system is linked to start a combustible gas explosion-proof system, trigger a PCS (personal computer system) to stop, and jump out a cabin-level main circuit breaker and a cluster-level relay. When two or more combustible gas detectors detect that the concentration of the combustible gas in the current battery prefabricated cabin reaches a second threshold value, and a cabin-level main circuit breaker trips; or when the concentration of the combustible gas detected by the at least one combustible gas detector reaches a first threshold value, the at least one temperature-sensing detector acts, and the cabin-level main circuit breaker trips; or when at least one temperature-sensitive detector and at least one smoke-sensitive detector act simultaneously and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the BMS battery management system to close the combustible gas explosion-proof system, trigger the PCS to stop, and alarm by the outdoor audible and visual alarm, and is linked with the fire alarm controller to start the fire extinguishing system.
And when the control centers of the combustible gas explosion-proof system and the fire extinguishing system receive the early warning signal transmitted by the fire detection alarm system through the BMS battery management system or the fire signal transmitted by the fire alarm controller, the combustible gas explosion-proof system and the fire extinguishing system are automatically started according to the established explosion-proof strategy and the fire extinguishing strategy.
In practical application, when the combustible gas detector detects the concentration of the combustible gas such as H2When the concentration reaches a first threshold value, starting a combustible gas explosion-proof system, stopping the PCS, starting an explosion-proof electric fan, and performing forced ventilation so as to reduce the concentration of combustible steam and combustible gas in the battery prefabricated cabin, improve the effectiveness of early warning and identification of thermal runaway of the lithium iron phosphate battery and improve the accuracy of fire-fighting warning; when the combustible gas detector detects the concentration of the combustible gas such as H2When the concentration reaches a second threshold value, stopping ventilation of the explosion-proof electric fan, stopping the PCS (process control system), starting the water mist fire extinguishing system in time, and extinguishing the fire by the water mist fire extinguishing system; on one hand, the water mist medium can extinguish the flame generated by thermal runaway of the battery, the water mist is vaporized to reduce the environmental temperature,prevent the battery after combustion through reducing ambient temperature to the ignition point, on the other hand can cool down and dilute the effect to combustible liquid steam and combustible gas in the energy storage cabin, has reduced the explosion danger when the battery takes place to become invalid unusually in the energy storage cabin, reduces the risk of catching fire on a large scale of lithium iron phosphate energy storage system simultaneously, ensures energy storage system's safety. Meanwhile, the starting of the water mist fire extinguishing system meets the requirements of first power off, then spraying to reduce the concentration of combustible gas and then extinguishing fire.
The water mist fire extinguishing system adopted in the invention is characterized in that more than one water mist spray head is arranged in each battery module in the battery prefabricated cabin, all the water mist spray heads are connected to a water mist fire extinguishing system pipe network, and the water mist fire extinguishing system pipe network is communicated with an external water source and is used for supplying water to the water mist spray heads. The water mist spray head is of a flat structure, at least two nozzles are arranged on one side face of the flat structure, the arrangement positions of the at least two nozzles ensure that sprayed mist beams are distributed in a sector shape, and the face where the nozzles are located is an arc face. So as to ensure that the water mist spray head can be effectively arranged in the battery prefabricated cabin and reduce the occupied space under the condition of not reducing the range of fire extinguishing spray. The battery module comprises a battery shell, a battery is arranged in the battery shell, the distance from the upper surface of the battery to the inner surface of a top plate of the battery shell is more than or equal to 50cm, and the distance from the side surface of the battery to the inner surface of a side plate of the battery shell is more than or equal to 20 cm; one side plate of the battery shell is provided with an opening, and the other side plates of the battery shell are provided with mesh areas; the top edge of the opening is consistent with the height of the inner surface of the top plate of the battery shell, and the bottom edge of the opening is not lower than the upper surface of the battery; the mesh area spans the whole width of the side plate, the top edge of the mesh area is 15-20 cm lower than the inner surface of the top plate of the battery shell, and the bottom edge of the mesh area is not lower than the upper surface of the battery; the water mist spray head extends into the battery shell from the opening, and the spraying direction of the water mist spray head faces to the area between the upper surface of the battery and the inner surface of the top plate of the battery shell. The distance between the upper surface of the battery and the inner surface of the top plate of the battery shell is more than or equal to 50cm, the distance between the side surface of the battery and the inner surface of the side plate of the battery shell is more than or equal to 20cm, and the aperture ratio of the mesh hole area is 25%.
The water mist fire extinguishing system is verified by tests of batteries and different fire extinguishing agents of different manufacturers for 20 times, the conclusion is clear, the control is reliable, the concentration of combustible liquid steam and combustible gas in a prefabricated battery cabin is obviously reduced when the water mist fire extinguishing system is used, the safety standard and the effective control can be achieved after the water mist fire extinguishing system is used for extinguishing fire, and a battery body after fire extinguishing is kept still in a test field for 24 hours without re-combustion or explosion.
The fire early warning method for the prefabricated battery compartment of the lithium iron phosphate energy storage power station further meets the following requirements: when the circuit breaker of the cabin-level PCS refuses to jump, the fire disaster is judged through the manual remote video of the monitoring center, and the water mist fire extinguishing system is started for concentration reduction, fire extinguishing and the like through the fire monitoring background in a remote emergency mode. When a prefabricated cabin battery fire disaster occurs in the construction, debugging or overhauling process, the fire extinguishing system can be started to extinguish the fire. And the portable fire extinguishing facility can also be used for fire control and extinguishment.
The invention discloses a fire early warning method for a battery prefabricated cabin of a lithium iron phosphate energy storage power station, which is characterized in that a combustible gas detector is additionally arranged in a fire detection alarm system, alarm thresholds in early warning and later early warning stages are respectively arranged in the combustible gas detector, and a combustible gas explosion-proof system and a fire extinguishing system are respectively controlled to act in different alarm stages; according to the two-stage multi-level fire early warning set by combustible gas monitoring, the accuracy and reliability of the thermal runaway detection early warning of the lithium iron phosphate battery are effectively improved, and the safe operation of an energy storage system is guaranteed.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (8)
1. A fire early warning method for a battery prefabricated cabin of a lithium iron phosphate energy storage power station is characterized in that a fire alarm controller, a BMS battery management system, a fire detection alarm system, a combustible gas explosion-proof system and a fire extinguishing system are arranged in the battery prefabricated cabin; the fire detection alarm system and the fire extinguishing system are respectively in communication connection with the fire alarm controller, and the combustible gas explosion-proof system is in communication connection with the BMS battery management system;
the fire detection alarm system comprises a plurality of combustible gas detectors arranged at the top of a battery prefabricated cabin, and the combustible gas detectors are in communication connection with a BMS battery management system; the combustible gas detector is provided with a first threshold value and a second threshold value of the concentration of the combustible gas, which are sent out by the combustible gas detector;
when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a first threshold value, starting early warning, linking with a BMS battery management system to start a combustible gas explosion-proof system, triggering a PCS (personal communication System) to stop, and tripping off a cabin-level main breaker and a cluster-level relay;
when the combustible gas detector detects that the concentration value of the combustible gas in the current battery prefabricated cabin reaches a second threshold value, the later-stage early warning is started, the BMS battery management system is linked to close the combustible gas explosion-proof system, the PCS is triggered to shut down, and meanwhile, the fire alarm controller is linked to start the fire extinguishing system.
2. The fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station as claimed in claim 1, wherein when two or more combustible gas detectors detect that the concentration of the combustible gas in the current battery prefabricated cabin reaches a second threshold value and a cabin-level main breaker trips, the fire detection alarm system is linked with a fire alarm controller to automatically start a fire extinguishing system.
3. The fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station as claimed in claim 1, wherein the fire detection and alarm system is further provided with a plurality of temperature detectors for monitoring the temperature in the battery prefabricated cabin and a plurality of smoke detectors for monitoring the smoke concentration in the battery prefabricated cabin, and the temperature detectors and the smoke detectors are respectively in communication connection with the fire alarm controller.
4. The lithium iron phosphate energy storage power station battery prefabricated cabin fire early warning method according to claim 3, characterized in that when the concentration of combustible gas detected by at least one combustible gas detector reaches a first threshold value, at least one temperature-sensitive detector acts, and a cabin-level main breaker trips, the fire detection alarm system is linked with a fire alarm controller to automatically start a fire extinguishing system; or when at least one temperature-sensitive detector and at least one smoke-sensitive detector act simultaneously and the cabin-level main circuit breaker trips, the fire detection alarm system is linked with the fire alarm controller to automatically start the fire extinguishing system.
5. The fire early warning method for the prefabricated battery compartment of the lithium iron phosphate energy storage power station as claimed in claim 3, wherein the fire detection alarm system further comprises a manual alarm button, and the manual alarm button is in communication connection with the fire alarm controller.
6. The fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station as claimed in claim 5, wherein when the action of the manual alarm button, the action of any temperature-sensitive detector, the action of any smoke-sensitive detector or the detection value of any combustible gas detector reaches a first threshold value, the fire detection alarm system is linked with the fire alarm controller to start the combustible gas explosion-proof system.
7. The fire early warning method for the battery prefabricated cabin of the lithium iron phosphate energy storage power station as claimed in claim 1 or 6, wherein the combustible gas explosion-proof system is started to start an explosion-proof electric fan for reducing the concentration of combustible steam and combustible gas in the battery prefabricated cabin.
8. The fire early warning method for the prefabricated battery compartment of the lithium iron phosphate energy storage power station according to any one of claims 1, 2 or 4, characterized in that a water mist fire extinguishing system is adopted as the fire extinguishing system.
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|---|---|---|---|---|
| CN111260875A (en) * | 2020-01-19 | 2020-06-09 | 国网江苏省电力有限公司电力科学研究院 | Fire early warning method and system for valve-controlled lead-acid battery and fault battery positioning device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569142A (en) * | 2016-11-11 | 2017-04-19 | 华中科技大学 | Power lithium ion battery thermal runaway early warning system and early warning method |
| CN106823198A (en) * | 2017-03-02 | 2017-06-13 | 南京能启能电子科技有限公司 | A kind of lithium battery box extinguishing method |
| CN107768749A (en) * | 2017-09-22 | 2018-03-06 | 北京精密机电控制设备研究所 | A kind of battery case for possessing automatic fire-extinguishing function |
| KR101949151B1 (en) * | 2018-05-17 | 2019-02-18 | 주식회사 창성에이스산업 | Aerosol Fire Extinguishing Apparatus For Battery Operated Smoke Sensing |
| JP2019114026A (en) * | 2017-12-22 | 2019-07-11 | 新コスモス電機株式会社 | Alarm and alarming device |
| CN209237239U (en) * | 2018-10-30 | 2019-08-13 | 杭州中传消防设备有限公司 | A kind of active power battery testing case fire disaster intelligently prevention and control system |
-
2019
- 2019-08-16 CN CN201910760100.7A patent/CN110634262A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569142A (en) * | 2016-11-11 | 2017-04-19 | 华中科技大学 | Power lithium ion battery thermal runaway early warning system and early warning method |
| CN106823198A (en) * | 2017-03-02 | 2017-06-13 | 南京能启能电子科技有限公司 | A kind of lithium battery box extinguishing method |
| CN107768749A (en) * | 2017-09-22 | 2018-03-06 | 北京精密机电控制设备研究所 | A kind of battery case for possessing automatic fire-extinguishing function |
| JP2019114026A (en) * | 2017-12-22 | 2019-07-11 | 新コスモス電機株式会社 | Alarm and alarming device |
| KR101949151B1 (en) * | 2018-05-17 | 2019-02-18 | 주식회사 창성에이스산업 | Aerosol Fire Extinguishing Apparatus For Battery Operated Smoke Sensing |
| CN209237239U (en) * | 2018-10-30 | 2019-08-13 | 杭州中传消防设备有限公司 | A kind of active power battery testing case fire disaster intelligently prevention and control system |
Cited By (23)
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|---|---|---|---|---|
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