CN221451564U - Fire extinguishing system for energy storage battery compartment of lithium iron phosphate energy storage power station - Google Patents
Fire extinguishing system for energy storage battery compartment of lithium iron phosphate energy storage power station Download PDFInfo
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- CN221451564U CN221451564U CN202323442931.0U CN202323442931U CN221451564U CN 221451564 U CN221451564 U CN 221451564U CN 202323442931 U CN202323442931 U CN 202323442931U CN 221451564 U CN221451564 U CN 221451564U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 163
- 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 40
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 51
- 239000000779 smoke Substances 0.000 claims description 47
- 239000010410 layer Substances 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 20
- 239000003595 mist Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 230000003111 delayed effect Effects 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 239000011491 glass wool Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims description 4
- 210000002268 wool Anatomy 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000012983 electrochemical energy storage Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of electrochemical energy storage, in particular to a fire-fighting system of an energy storage battery compartment of a lithium iron phosphate energy storage power station, which comprises a combustible gas detector, a battery management system and a fire-extinguishing device, wherein the battery management system detects the concentration value of combustible gas in the energy storage battery compartment in real time through the combustible gas detector, controls a cooling device to cool the inside of the energy storage battery compartment and controls an alarm to give an alarm when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, and controls the fire-extinguishing device to extinguish the fire of the energy storage battery compartment if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value at intervals. By applying the fire-fighting system, in practical application, through the combined action of the combustible gas detector, the battery management system and the fire-extinguishing device, the fire can be quickly extinguished in the primary stage of the development of thermal runaway of the battery, so that the further thermal runaway of the battery is prevented, and the fire is expanded and spread.
Description
Technical Field
The utility model relates to the technical field of electrochemical energy storage, in particular to a fire-fighting system for an energy storage battery compartment of a lithium iron phosphate energy storage power station.
Background
In the technical field of electrochemical energy storage, the lithium iron phosphate battery is used as one of the main current technical routes of the lithium battery anode material, the technology is relatively mature, the cost performance is high, and the lithium iron phosphate battery has obvious performance advantages in the energy storage field. However, since the internal heat generation rate of the lithium iron phosphate battery is much higher than the heat dissipation rate, a chain reaction is caused when a large amount of heat is accumulated in the battery, thereby causing the ignition and explosion of the battery. Currently, in order to ensure safe and reliable operation of a lithium iron phosphate energy storage power station and reduce the fire risk of a lithium iron phosphate energy storage battery, the design of a fire protection system for the lithium iron phosphate energy storage power station mainly comprises the following modes, namely, a traditional fire detection system is adopted, but the traditional fire detection system can be detected only under the condition that a large amount of dense smoke is generated by combustion, and at the moment, the optimal treatment time is missed, so that irrecoverable loss is caused to equipment. Secondly, a fixed fire extinguishing system is arranged, and a heptafluoropropane gas automatic fire extinguishing system is generally arranged, but the heptafluoropropane gas fire extinguishing system can only suppress fire in a short time, but cannot effectively cool a battery pack, and secondary re-combustion of battery fire is easily caused.
Therefore, a fire protection system for an energy storage battery compartment of a lithium iron phosphate energy storage power station is needed.
Disclosure of utility model
The utility model aims to solve the problems that in the prior art, a fire disaster cannot be effectively prevented in the initial stage of battery thermal runaway and the fire cannot be effectively and quickly extinguished in the later stage of battery thermal runaway when a fire disaster detection system or a fixed fire extinguishing system is adopted for fire prevention aiming at a lithium iron phosphate energy storage power station.
In order to achieve the above purpose, the utility model provides a fire-fighting system for an energy storage battery compartment of a lithium iron phosphate energy storage power station, which comprises a combustible gas detector, a battery management system and a fire-extinguishing device;
The battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, and when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, controls the cooling device to cool the inside of the energy storage battery compartment and controls the alarm to alarm, the interval setting time is set, and if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value, controls the fire extinguishing device to extinguish the fire of the energy storage battery compartment, wherein a protective layer is arranged on the outer bulkhead of the energy storage battery compartment, and the protective layer comprises a heat insulation layer and an impact resistance layer arranged on the heat insulation layer.
Preferably, the heat insulation layer is made of any one or more of foam, superfine glass wool and high silica wool.
Preferably, the impact resistant layer is made of stainless steel.
Preferably, the impact-resistant layer is provided with a plurality of protrusions at preset intervals.
Preferably, the cooling device is a ventilation device for reducing the temperature and the concentration of the combustible gas in the energy storage battery compartment.
Preferably, the system also comprises a warm smoke detection device, a water mist spraying device, a power supply control device and a video monitoring alarm device;
The temperature smoke detection equipment detects the temperature value and the smoke concentration value in the energy storage battery compartment in real time, and when the temperature value in the energy storage battery compartment exceeds a temperature threshold value and/or the smoke concentration value exceeds a smoke concentration threshold value, the power supply control device is controlled to cut off the power supply of the energy storage battery compartment, the water mist spraying device is controlled to spray the inside of the energy storage battery compartment, then the video monitoring alarm device is controlled to transmit real-time video and alarm signals in the energy storage battery compartment to the monitoring center, the on-site alarm is controlled to alarm, and the fire extinguishing device is controlled to extinguish the fire of the energy storage battery compartment according to any one of a remote fire extinguishing signal, an on-site manual trigger fire extinguishing signal and a delayed trigger fire extinguishing signal of the monitoring center.
Preferably, the warm smoke detection device comprises a temperature detector and a smoke detector.
Preferably, a plurality of the temperature detectors and the smoke detectors are arranged in the energy storage battery compartment at equal intervals.
Preferably, the water mist spraying device is a high-pressure fine water mist fire extinguishing device containing NaCl additives.
Preferably, the alarm is an audible and visual alarm.
According to the technical scheme, based on the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, in the practical application process, the battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, and when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, the cooling device is controlled to cool the inside of the energy storage battery compartment and the alarm is controlled to alarm, the time is set at intervals, and if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value, the fire-fighting device is controlled to extinguish the fire of the energy storage battery compartment; the battery state can be effectively pre-warned at the initial stage of thermal runaway of the battery, and the fire extinguishing device can be timely controlled to extinguish the fire after the thermal runaway of the battery is confirmed to begin to appear, so that the spread of fire is avoided.
Meanwhile, the heat insulation layer is made of any one or more of foam, superfine glass wool and high silica cotton; the impact-resistant layer is made of stainless steel; a plurality of bulges are arranged on the impact-resistant layer at preset intervals; the energy storage battery compartment can be effectively protected, and meanwhile, the influence of external high temperature on the inside of the energy storage battery compartment is avoided, so that the safety of the energy storage battery compartment is improved.
The fire extinguishing device is characterized by further comprising a warm smoke detection device, a water mist spraying device, a power supply control device and a video monitoring alarm device, wherein the warm smoke detection device detects a temperature value and a smoke concentration value in an energy storage battery compartment in real time, and when the temperature value in the energy storage battery compartment exceeds a temperature threshold value and/or the smoke concentration value exceeds a smoke concentration threshold value, the power supply control device is controlled to cut off a power supply of the energy storage battery compartment, the water mist spraying device is controlled to spray the interior of the energy storage battery compartment, then the video monitoring alarm device is controlled to transmit a real-time video and an alarm signal in the energy storage battery compartment to a monitoring center, and the on-site alarm is controlled to alarm, and the fire extinguishing device is controlled to extinguish a fire of the energy storage battery compartment according to any one of a remote fire extinguishing signal, an on-site manual triggering fire extinguishing signal and a delayed triggering fire extinguishing signal of the monitoring center; the energy storage battery can effectively extinguish fire in the later stage of the thermal runaway of the battery when the initial preventive measure of the thermal runaway of the battery fails, so that the further spread of fire is avoided, and the larger loss is caused, thereby effectively reducing the fire risk of the energy storage battery based on double protection.
Drawings
Fig. 1 is a schematic diagram of a fire protection system for an energy storage battery compartment of a lithium iron phosphate energy storage power station.
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The term "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, a possible presence or addition of one or more other features, elements, components, and/or combinations thereof.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model provides a fire-fighting system for an energy storage battery compartment of a lithium iron phosphate energy storage power station, which is shown in figure 1 and comprises a combustible gas detector, a battery management system and a fire-extinguishing device;
the battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, and when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, controls the cooling device to cool the inside of the energy storage battery compartment and controls the alarm to alarm, the interval setting time is set, and if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value, controls the fire extinguishing device to extinguish the fire of the energy storage battery compartment, wherein a protective layer is arranged on the outer bulkhead of the energy storage battery compartment, and the protective layer comprises a heat insulation layer near the bulkhead end and an impact resistance layer arranged on the heat insulation layer. In a specific embodiment, the setting time is generally short, for example, 1-100s.
In a preferred embodiment, the flammable gas concentration threshold is a flammable gas concentration value when the battery in the energy storage battery compartment starts to generate thermal runaway, so that in actual application, whether the battery is abnormally out of control or not can be effectively judged at the initial stage of the thermal runaway of the battery. Where the fuel gas concentration threshold is typically different from one battery to another.
According to the technical scheme, based on the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, in the practical application process, the state of the battery can be effectively early warned at the initial stage of thermal runaway of the battery, and the fire-extinguishing device can be timely controlled to extinguish fire after the thermal runaway of the battery is confirmed to start, so that the expansion and the spreading of fire are avoided.
In the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, the heat insulation layer is preferably made of any one or more of foam, superfine glass wool and high silica wool.
In a further preferred embodiment, the impact resistant layer is made of stainless steel.
In a still further preferred embodiment, the impact-resistant layer is provided with a plurality of protrusions at predetermined intervals.
According to the utility model, the protection layer is further arranged on the outer bulkhead of the energy storage battery compartment, and comprises the heat insulation layer and the impact resistance layer arranged on the heat insulation layer, and the heat insulation layer and the impact resistance layer are further designed, so that the energy storage battery compartment can be effectively protected, the influence of external high temperature on the inside of the energy storage battery compartment is avoided, and the safety of the energy storage battery compartment is improved.
In the fire-fighting system of the energy storage battery compartment of the lithium iron phosphate energy storage power station, the cooling device is preferably a ventilation device for reducing the temperature and the concentration of combustible gas in the energy storage battery compartment. After the abnormality of the battery is detected at the initial stage of the thermal runaway of the battery, the battery in the energy storage battery compartment is further cooled through the ventilation equipment, combustible and explosive substances such as combustible gas are timely discharged, and therefore, the thermal runaway rate of the battery can be delayed, and meanwhile, whether the thermal runaway of the battery occurs is further confirmed, the situation that the thermal runaway of the battery does not occur is avoided, and the fire extinguishing device is triggered, so that huge loss is caused.
In the fire-fighting system of the energy storage battery compartment of the lithium iron phosphate energy storage power station, the fire-fighting system also comprises a warm smoke detection device, a water mist spraying device, a power supply control device and a video monitoring alarm device;
The temperature smoke detection equipment detects the temperature value and the smoke concentration value in the energy storage battery compartment in real time, and when the temperature value in the energy storage battery compartment exceeds a temperature threshold value and/or the smoke concentration value exceeds a smoke concentration threshold value, the power supply control device is controlled to cut off the power supply of the energy storage battery compartment, the water mist spraying device is controlled to spray the inside of the energy storage battery compartment, then the video monitoring alarm device is controlled to transmit real-time video and alarm signals in the energy storage battery compartment to the monitoring center, the on-site alarm is controlled to alarm, and the fire extinguishing device is controlled to extinguish the fire of the energy storage battery compartment according to any one of a remote fire extinguishing signal, an on-site manual trigger fire extinguishing signal and a delayed trigger fire extinguishing signal of the monitoring center.
In a preferred embodiment, the temperature threshold is a temperature value when severe thermal runaway occurs in the battery in the energy storage battery compartment, and the smoke concentration threshold is a smoke concentration value when severe thermal runaway occurs in the battery in the energy storage battery compartment. Therefore, in practical application, whether the battery is in the later stage of severe thermal runaway can be rapidly and effectively judged. Wherein the temperature threshold and the smoke concentration threshold are typically different from one another due to the type of battery.
In the utility model, by further detecting the temperature value and/or the smoke concentration value in the energy storage battery compartment, whether the battery is in the later stage of severe thermal runaway at the moment can be effectively judged, so that the battery is prevented from being in a runaway state due to the failure of the protective measures in the initial stage of the thermal runaway of the battery, and the fire disaster is spread. And further after confirming that the temperature value in the energy storage battery compartment exceeds the temperature threshold value and/or the smoke concentration value exceeds the smoke concentration threshold value, controlling the power supply control device to cut off the power supply of the energy storage battery compartment, and controlling the water mist spraying device to spray the inside of the energy storage battery compartment, so that the fire spreading can be delayed under the condition of ensuring safety, and the fire extinguishing device can extinguish the fire of the energy storage battery compartment according to any one of a remote fire extinguishing signal, a field manual fire extinguishing signal and a delayed fire extinguishing signal of a monitoring center. The time for transmitting the video alarm signal to the monitoring center and triggering the on-site alarm is synchronous, so that the delay time for delaying triggering the fire extinguishing signal is the normal judging time after the related staff receives the alarm at the first time, and if the fire extinguishing device still does not receive the remote fire extinguishing signal of the monitoring center and/or the on-site manual triggering fire extinguishing signal after the normal judging time, the fire extinguishing is automatically started to prevent the fire from spreading.
In the fire-fighting system of the energy storage battery compartment of the lithium iron phosphate energy storage power station, the temperature smoke detection equipment comprises the temperature detector and the smoke detector, and the temperature detector and the smoke detector are arranged in the energy storage battery compartment at equal intervals, so that the temperature value and the smoke concentration value in the energy storage battery compartment can be detected more accurately in practical application.
In the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, the water mist spraying device is preferably a high-pressure fine water mist fire-fighting device containing NaCl additive, so that fire can be extinguished more quickly and effectively.
In the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, the alarm is an audible and visual alarm in the preferred condition, so that related operators can quickly find out abnormality and timely dispose the abnormality.
In the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment, as shown in fig. 1, in the preferred case, on-site staff can manually trigger the fire-extinguishing device when the battery has thermal runaway after judging in any period, so as to prevent fire from spreading.
The present utility model will be described in detail by way of examples, but the scope of the present utility model is not limited thereto.
Example 1
The fire-fighting system of the energy-storage battery compartment of the lithium iron phosphate energy-storage power station shown in the figure 1 is adopted to implement, and specifically, the fire-fighting system of the energy-storage battery compartment of the lithium iron phosphate energy-storage power station comprises a combustible gas detector, a battery management system and a fire-extinguishing device;
The battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, controls the cooling device to cool the inside of the energy storage battery compartment and controls the alarm to alarm when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, controls the fire extinguishing device to extinguish a fire of the energy storage battery compartment when the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value at intervals, wherein a protective layer is arranged on the outer bulkhead of the energy storage battery compartment, and the protective layer comprises a heat insulation layer and an impact resistance layer arranged on the heat insulation layer; the combustible gas concentration threshold value is a combustible gas concentration value when the battery in the energy storage battery cabin starts to generate thermal runaway; the cooling device is ventilation equipment and is used for reducing the temperature in the energy storage battery compartment and the concentration of combustible gas; the alarm is an audible and visual alarm.
According to detection, the fire-fighting system for the energy storage battery compartment of the lithium iron phosphate energy storage power station can effectively early warn the state of the battery in the initial stage of thermal runaway of the battery in actual application, and timely control the fire-extinguishing device to extinguish fire after confirming that the thermal runaway of the battery begins to occur, so that the expansion and the spreading of fire are avoided.
Example 2
Based on the implementation of example 1, the thermal insulation layer is made of superfine glass wool; the impact-resistant layer is made of stainless steel; a plurality of protrusions are arranged on the impact-resistant layer at preset intervals.
According to detection, the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment can effectively early warn the state of the battery in the initial stage of thermal runaway of the battery in actual application, and timely control the fire-fighting device to extinguish fire after confirming that the thermal runaway of the battery begins to occur, so that the expansion and the spreading of fire are avoided; meanwhile, the energy storage battery compartment can be effectively protected, and the influence of external high temperature on the inside of the energy storage battery compartment is avoided, so that the safety of the energy storage battery compartment is improved.
Example 3
The method is implemented by referring to the embodiment 2, and is different from the method, the method further comprises a warm smoke detection device, a water mist spraying device, a power supply control device and a video monitoring alarm device, wherein the warm smoke detection device detects a temperature value and a smoke concentration value in an energy storage battery compartment in real time, and when the temperature value in the energy storage battery compartment exceeds a temperature threshold value and/or the smoke concentration value exceeds a smoke concentration threshold value, the power supply control device is controlled to cut off a power supply of the energy storage battery compartment, the water mist spraying device is controlled to spray the inside of the energy storage battery compartment, then the video monitoring alarm device is controlled to transmit a real-time video and an alarm signal in the energy storage battery compartment to a monitoring center, and the on-site alarm is controlled to alarm, and the fire extinguishing device is controlled to extinguish a fire in the energy storage battery compartment according to any one of a remote fire extinguishing signal of the monitoring center, a manual on-site fire extinguishing signal and a delayed fire extinguishing signal; the temperature threshold is a temperature value when the battery in the energy storage battery cabin is subjected to severe thermal runaway, and the smoke concentration threshold is a smoke concentration value when the battery in the energy storage battery cabin is subjected to severe thermal runaway; the warm smoke detection equipment comprises a temperature detector and a smoke detector, and a plurality of temperature detectors and smoke detectors are arranged in the energy storage battery compartment at equal intervals; the water mist spraying device is a high-pressure fine water mist fire extinguishing device containing NaCl additives.
According to detection, the fire-fighting system of the lithium iron phosphate energy storage power station energy storage battery compartment can effectively early warn the state of the battery in the initial stage of thermal runaway of the battery in actual application, and timely control the fire-fighting device to extinguish fire after confirming that the thermal runaway of the battery begins to occur, so that the expansion and the spreading of fire are avoided; meanwhile, the energy storage battery compartment can be effectively protected, and the influence of external high temperature on the inside of the energy storage battery compartment is avoided, so that the safety of the energy storage battery compartment is improved; further, when the initial preventive measures of the thermal runaway of the battery fail, the fire can be effectively extinguished in the later period of the thermal runaway of the battery, so that the fire is prevented from spreading further, and the larger loss is caused, and therefore the fire risk of the energy storage battery is effectively reduced based on double protection.
According to the fire-fighting system for the lithium iron phosphate energy storage power station energy storage battery compartment, the battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, when the concentration value of the combustible gas exceeds the combustible gas concentration threshold value, the cooling device is controlled to cool the inside of the energy storage battery compartment and the alarm is controlled to alarm, the time is set at intervals, and if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value, the fire-extinguishing device is controlled to extinguish the fire of the energy storage battery compartment; the battery state can be effectively pre-warned at the initial stage of thermal runaway of the battery, and the fire extinguishing device can be timely controlled to extinguish the fire after the thermal runaway of the battery is confirmed to begin to appear, so that the spread of fire is avoided.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a plurality of simple variants can be made to the technical proposal of the utility model, and in order to avoid unnecessary repetition, the utility model does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. The fire-fighting system for the energy storage battery compartment of the lithium iron phosphate energy storage power station is characterized by comprising a combustible gas detector, a battery management system and a fire-extinguishing device;
The battery management system detects the concentration value of the combustible gas in the energy storage battery compartment in real time through the combustible gas detector, and when the concentration value of the combustible gas exceeds a combustible gas concentration threshold value, controls the cooling device to cool the inside of the energy storage battery compartment and controls the alarm to alarm, the interval setting time is set, and if the concentration value of the combustible gas still exceeds the combustible gas concentration threshold value, controls the fire extinguishing device to extinguish the fire of the energy storage battery compartment, wherein a protective layer is arranged on the outer bulkhead of the energy storage battery compartment, and the protective layer comprises a heat insulation layer and an impact resistance layer arranged on the heat insulation layer.
2. The fire protection system of the energy storage battery compartment of the lithium iron phosphate energy storage power station according to claim 1, wherein the heat insulation layer is made of any one or more of foam, ultra-fine glass wool and high silica wool.
3. The lithium iron phosphate energy storage power station energy storage battery compartment fire protection system of claim 1, wherein the impact resistant layer is made of stainless steel.
4. The fire protection system for the energy storage battery compartment of the lithium iron phosphate energy storage power station according to any one of claims 1 to 3, wherein a plurality of protrusions are arranged on the impact resistant layer at preset intervals.
5. A lithium iron phosphate energy storage power station energy storage battery compartment fire protection system as claimed in any one of claims 1 to 3 wherein the cooling means is a ventilation device for reducing the temperature and the concentration of combustible gases within the energy storage battery compartment.
6. The fire protection system of the energy storage battery compartment of the lithium iron phosphate energy storage power station according to claim 1, further comprising a warm smoke detection device, a water mist spraying device, a power supply control device and a video monitoring alarm device;
The temperature smoke detection equipment detects the temperature value and the smoke concentration value in the energy storage battery compartment in real time, and when the temperature value in the energy storage battery compartment exceeds a temperature threshold value and/or the smoke concentration value exceeds a smoke concentration threshold value, the power supply control device is controlled to cut off the power supply of the energy storage battery compartment, the water mist spraying device is controlled to spray the inside of the energy storage battery compartment, then the video monitoring alarm device is controlled to transmit real-time video and alarm signals in the energy storage battery compartment to the monitoring center, the on-site alarm is controlled to alarm, and the fire extinguishing device is controlled to extinguish the fire of the energy storage battery compartment according to any one of a remote fire extinguishing signal, an on-site manual trigger fire extinguishing signal and a delayed trigger fire extinguishing signal of the monitoring center.
7. The lithium iron phosphate energy storage power station energy storage battery compartment fire protection system of claim 6, wherein the warm smoke detection device comprises a temperature detector and a smoke detector.
8. The lithium iron phosphate energy storage power station energy storage battery compartment fire protection system of claim 7, wherein a plurality of the temperature detectors and the smoke detectors are arranged at equal intervals inside the energy storage battery compartment.
9. The lithium iron phosphate energy storage power station energy storage battery compartment fire protection system of claim 6, wherein the water mist spraying device is a high-pressure fine water mist fire protection device containing a NaCl additive.
10. The lithium iron phosphate energy storage power station energy storage battery compartment fire protection system of claim 1 or 6, wherein the alarm is an audible and visual alarm.
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CN118584359A (en) * | 2024-08-06 | 2024-09-03 | 比亚迪股份有限公司 | Thermal runaway prediction method, battery management system, and storage medium |
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