CN117839127A - Fire control system and method for battery energy storage system - Google Patents
Fire control system and method for battery energy storage system Download PDFInfo
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- CN117839127A CN117839127A CN202410024221.6A CN202410024221A CN117839127A CN 117839127 A CN117839127 A CN 117839127A CN 202410024221 A CN202410024221 A CN 202410024221A CN 117839127 A CN117839127 A CN 117839127A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003112 inhibitor Substances 0.000 claims abstract description 65
- 230000009471 action Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
- 230000001629 suppression Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 34
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 230000000007 visual effect Effects 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention belongs to the technical field of battery energy storage, and discloses a fire control system and a fire control method for a battery energy storage system; wherein, fire control system includes: an alarm system, a fire suppression system and a control system; in the fire extinguishing system, a cabin-level fire extinguishing device and a afterburning inhibitor device are used for being arranged in a battery cabin of the battery energy storage system, and a Pack-level fire extinguishing device is used for being arranged in each battery module of the battery energy storage system; the reburning inhibitor device is communicated with each battery module through a first fire extinguishing pipeline; the input port of the second fire extinguishing pipeline is communicated with the cabin-level fire extinguishing device; the control system is used for receiving the detection signal of the detector and the action signal of the Pack-level fire extinguishing device, and controlling the opening or closing of the alarm, the cabin-level fire extinguishing device and the reburning inhibitor device according to preset fire-fighting action logic so as to realize graded fire control. The technical scheme of the invention can timely carry out grading treatment on abnormal conditions, and minimize accident hazard.
Description
Technical Field
The invention belongs to the technical field of battery energy storage, relates to the field of fire control, and in particular relates to a fire control system and method for a battery energy storage system.
Background
Currently, battery energy storage systems have been widely used in various fields; among these, there are many factors that affect the safe use of battery energy storage systems. The method is specifically explained, and in the working process of the battery energy storage system, if the battery is abnormally overheated, overcharged or short-circuited, a large amount of inflammable and explosive gas and toxic gas can be generated by chemical reaction in the battery; because of the numerous electrical devices in the energy storage system, the gas breaks through the battery safety valve and enters the energy storage system, and any uncontrollable discharging process can cause large-scale fire or explosion accidents. In order to achieve effective protection of the battery energy storage system, it is necessary to solve the adverse effects of fire and explosion accidents caused by thermal runaway of the battery in early stages.
In the early stage of a fire disaster of the battery, if water is used as a fire-fighting medium, active metals in the battery react with the water, so that the fire rapidly spreads; if other conventional methods (e.g., using carbon dioxide, heptafluoropropane, haloalkane 1301, etc. fire extinguishing agents) are used, the open fire can be effectively extinguished, but it is difficult to suppress the afterburning of the battery. In view of the foregoing, there is a need for a fire control strategy employing a multi-stage protection scheme design.
Disclosure of Invention
The present invention is directed to a fire control system and method for a battery energy storage system, which solves one or more of the above-mentioned problems. The technical scheme provided by the invention can timely carry out grading treatment on abnormal conditions, and minimize accident hazard.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a fire control system for a battery energy storage system, which comprises: an alarm system, a fire suppression system and a control system; wherein,
the alarm system comprises a detector and an alarm;
the fire extinguishing system comprises a cabin-level fire extinguishing device, a re-burning inhibitor device, a Pack-level fire extinguishing device, a first fire extinguishing pipeline and a second fire extinguishing pipeline; the Pack-level fire extinguishing device is used for being arranged on each battery module of the battery energy storage system; the reburning inhibitor device is communicated with each battery module through the first fire extinguishing pipeline; the second fire extinguishing pipeline is used for being installed at the top of the battery compartment, and output ports are arranged at a plurality of preset positions of the battery compartment, and the input ports of the second fire extinguishing pipeline are communicated with the compartment-level fire extinguishing device;
the control system comprises a fire-fighting host computer, and is used for receiving the detection signals of the detector and the action signals of the Pack-level fire-extinguishing device, and controlling the opening or closing of the alarm, the cabin-level fire-extinguishing device and the reburning inhibitor device according to preset fire-fighting action logic so as to realize graded fire-fighting control.
The invention further improves that the detector comprises a temperature sensing detector, a smoke sensing detector and a combustible gas detector which are arranged in a battery compartment of the battery energy storage system.
The invention further improves that the alarm is an audible and visual alarm.
The battery energy storage system is further improved in that a plurality of battery clusters are arranged in a battery cabin of the battery energy storage system, and a plurality of battery modules are arranged in each battery cluster.
A further development of the invention consists in that the cabin-level fire extinguishing device is also connected to each battery module via the first fire extinguishing line.
The invention further improves that the preset fire behavior logic specifically comprises:
when any one of the temperature sensing detector, the smoke sensing detector and the combustible gas detector gives an alarm, the fire control host controls the alarm to give an alarm and outputs a fire alarm signal to an upper management system;
when only the combustible gas detector generates primary alarm, the fire control host controls the alarm to alarm, controls an exhaust system in the battery energy storage system to be started so as to ventilate the battery compartment, and outputs a fire alarm signal to an upper management system; wherein, the primary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reaches
When the combustible gas detector generates a secondary alarm, the fire-fighting host controls the exhaust system to be closed, and the next operation is performed; wherein, the secondary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reaches
When the combustible gas detector in the battery compartment generates secondary alarm, one or two of the temperature sensing detector and the smoke sensing detector respond, and the Pack-level fire extinguishing device does not respond, the fire control host starts countdown, controls the alarm to alarm, controls the air exhaust system in the battery energy storage system to be closed, and outputs a fire alarm signal to the upper management system; after the countdown is finished, controlling the cabin-level fire extinguishing device to be started, spraying fire extinguishing agent into the battery cabin, and outputting a fire extinguishing agent spraying signal to an upper-level management system; when the Pack-level fire extinguishing device responds, the fire-fighting host starts countdown, controls the alarm to alarm, and outputs a fire alarm signal to the upper management system; during the countdown period, if any detector in the battery compartment gives an alarm, the fire-fighting host starts the compartment-level fire-extinguishing device after the countdown is finished, sprays fire extinguishing agent into the battery compartment, simultaneously starts the re-combustion inhibitor device, and sprays re-combustion inhibitor to the accident occurring battery module; during countdown, if no detector in the battery compartment gives an alarm, the fire-fighting host only starts the reburning inhibitor device to spray the reburning inhibitor to the accident battery module.
A further improvement of the present invention is that, upon start-up of the afterburning inhibitor device, the initial release amount of the afterburning inhibitor to the accident cell module is calculated as expressed as,
W 1 ＝(V 1 -V 2 )·N；
in which W is 1 A release amount of a afterburning inhibitor; v (V) 1 Is the battery module volume; v (V) 2 Is the battery volume; n is the density of the afterburning inhibitor at 101Kpa standard atmospheric pressure and ambient temperature.
The invention further improves that when the afterburning inhibitor device is started, the calculated expression of the release amount of the afterburning inhibitor released to the accident cell module by adopting a pumping mode is that,
L 3 ＝|Q y |；
in which W is 2 For the corrected post-afterburning inhibitor release amount; ρ is the afterburning inhibitor density; m is a pumping mode influence factor; x is x 1 The diameter of a main pipeline of the fire extinguishing system; x is x 2 The diameter of a branch pipeline of the fire extinguishing system; x is x 3 The diameter of a branch pipeline of the fire extinguishing system is smaller than that of a branch pipeline of the fire extinguishing system; l (L) 1 To be turned offThe length of a main pipeline of the fire system; l (L) 2 Branch pipe length for fire extinguishing system; l (L) 3 Dividing the length of a pipeline for the fire extinguishing system; lambda is the influence factor of branch pipelines to branch pipelines; alpha is a pipeline coefficient; q (Q) y And (5) the position coordinates of the battery module in abnormal conditions.
The invention further improves that when the afterburning inhibitor device is started, the gas purging mode is adopted to release the release amount of the afterburning inhibitor to the accident cell module, the calculated expression is,
L 3 ＝|Q y |；
in which W is 3 For the corrected post-afterburning inhibitor release amount; ρ is the afterburning inhibitor density; n is a purging mode influence factor; x is x 1 The diameter of a main pipeline of the fire extinguishing system; x is x 2 The diameter of a branch pipeline of the fire extinguishing system; x is x 3 The diameter of a branch pipeline of the fire extinguishing system is smaller than that of a branch pipeline of the fire extinguishing system; l (L) 1 The length of a main pipeline of the fire extinguishing system; l (L) 2 Branch pipe length for fire extinguishing system; l (L) 3 Dividing the length of a pipeline for the fire extinguishing system; lambda is the influence factor of branch pipelines to branch pipelines; alpha is a pipeline coefficient; q (Q) y And (5) the position coordinates of the battery module in abnormal conditions.
The invention provides a fire control method for a battery energy storage system, which is realized by adopting the fire control system, and comprises the following steps:
detecting a battery compartment of the battery energy storage system through a detector, and transmitting a detection signal to the fire control controller;
detecting each battery module through the Pack-level fire extinguishing device, automatically generating action response or non-action response according to the detection result, and transmitting action signals of the Pack-level fire extinguishing device generating the action response or non-action response to the fire control controller;
the fire control host of the control system receives the detection signal of the detector and the action signal of the Pack-level fire extinguishing device, and controls the opening or closing of the alarm, the cabin-level fire extinguishing device and the reburning inhibitor device according to preset fire control action logic so as to realize graded fire control.
Compared with the prior art, the invention has the following beneficial effects:
according to the fire control system for the battery energy storage system, provided by the invention, the received detection signals and the received action signals are analyzed, and fire is extinguished at different levels based on the analysis result, so that abnormal conditions can be timely classified, and the accident hazard is minimized. In addition, the battery Pack-level fire extinguishing device is used, and can control the fire extinguishing agent to be released into the corresponding battery module, so that the fire extinguishing work is more accurate and efficient.
According to the invention, different detector response and alarm strategies are further provided, so that various detectors can cooperate with each other to jointly complete different levels of fire control treatment work, and the accident hazard is further reduced.
According to the invention, the method for calculating the injection quantity of the reburning inhibitor is further provided, the injection quantity of the reburning inhibitor under different alarm conditions can be calculated, and the efficient configuration of fire-fighting resources is further realized under the condition that the effective protection of the battery energy storage system is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description of the embodiments or the drawings used in the description of the prior art will make a brief description; it will be apparent to those of ordinary skill in the art that the drawings in the following description are of some embodiments of the invention and that other drawings may be derived from them without undue effort.
Fig. 1 is a schematic diagram of a fire control system for a battery energy storage system in accordance with an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1, a fire control system for a battery energy storage system according to an embodiment of the present invention includes: an alarm system, a fire suppression system and a control system; wherein,
in the battery energy storage system for the embodiment of the invention, battery clusters and other electrical equipment are arranged in a battery cabin, and a plurality of battery modules are arranged in each battery cluster; the battery module is the smallest protection unit in the battery energy storage system according to the embodiment of the invention;
the alarm system comprises a detector and an alarm; wherein, the alarm can be an audible and visual alarm; the detector can comprise a temperature sensing detector, a smoke sensing detector, a combustible gas detector and the like; the temperature sensing detector, the smoke sensing detector and the combustible gas detector can be arranged in a battery cabin of the battery energy storage system;
the fire extinguishing system comprises a cabin-level fire extinguishing device, a reburning inhibitor device and a Pack-level fire extinguishing device; the cabin-level fire extinguishing device and the reburning inhibitor device can be placed on one side of the battery cabin and are provided with two sets of pipelines, one set of pipelines in the two sets of pipelines is connected with each battery module in the battery cabin, and the other set of pipelines is placed on the top of the battery cabin; the Pack-level fire extinguishing device is distributed in each battery module. Further illustratively, when the cabin-level fire extinguishing device works, the fire extinguishing agent can be released into the battery cabin, and the fire extinguishing agent and the afterburning inhibitor can be independently released into the battery module with the accident; the Pack-level fire extinguishing device can automatically spray fire extinguishing agent into the battery module to extinguish fire when a fire disaster occurs in the battery module, and simultaneously feed fire signals back to the fire-fighting host computer and control the opening of the branch pipeline control valve of the battery module;
the control system is connected with the alarm system, the fire extinguishing system and the upper management system; the control system mainly comprises a fire-fighting main machine and accessories thereof; the detector signal and the Pack-level fire extinguishing device action signal are connected to the fire-fighting host; when any signal is missing or fails, the fire-fighting host outputs a failure signal to the upper management system; after receiving alarm information of different grades, the fire control host executes corresponding fire control action logic.
In a further preferred technical scheme of the embodiment of the invention, the fire control strategy specifically related to is as follows:
(1) When any one of the temperature sensing detector, the smoke sensing detector and the combustible gas detector in the battery compartment gives an alarm, the fire-fighting host controls the audible and visual alarm to give an audible and visual alarm, and can output a fire alarm signal to the upper management system;
(2) When only the flammable gas detector in the battery compartment alarms, and when the flammable gas detector generates primary alarm, the fire control host controls the audible and visual alarm to perform audible and visual alarm, controls the exhaust system to start to ventilate the battery compartment, and simultaneously outputs a fire alarm signal to the upper management system; when the secondary alarm occurs to the flammable gas detector, the fire engine controls the exhaust system to be closed and performs the next operation;wherein, the primary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reachesThe secondary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reaches +.>
(3) When the combustible gas detector in the battery compartment generates secondary alarm, any one or more of the temperature sensing detector and the smoke sensing detector responds; when the Pack-level fire extinguishing device does not respond, the fire-fighting host starts countdown, and simultaneously controls the audible and visual alarm to carry out audible and visual alarm, controls the air exhaust system to be closed, and outputs a fire alarm signal to the upper management system; after the countdown is finished, controlling the fire extinguishing agent device to be started, spraying the fire extinguishing agent into the cabin, and outputting a fire extinguishing agent spraying signal to the upper management system;
(4) When the Pack-level fire extinguishing device acts, the fire-fighting host starts countdown, and simultaneously controls the audible and visual alarm to carry out audible and visual alarm and outputs a fire alarm signal to the upper management system; if any detector in the cabin alarms during the countdown period, the fire-fighting host starts the fire-extinguishing agent device after the countdown is finished, sprays the fire-extinguishing agent into the cabin, simultaneously starts the reburning inhibitor device, and sprays the reburning inhibitor to the accident occurrence module; if no detector in the cabin alarms during the countdown period, the fire engine only starts the reburning inhibitor device to spray the reburning inhibitor to the accident occurrence module.
In the embodiment of the invention, under the conditions (1) - (4), the alarm signal is not released after the fire extinguishing system works, and the control system automatically reports the monitoring personnel to take external fire-fighting measures. In addition, when the audible and visual alarm signal is sent out, monitoring personnel can judge the fire situation through a monitoring system or on-site observation and take other corresponding measures.
In summary, in order to reduce the huge damage caused by fire and explosion accidents occurring during operation of the battery energy storage system, the embodiment of the invention provides a novel fire control system in the battery energy storage system, which realizes linkage between the fire extinguishing system and the fire automatic alarm system and reduces the accident damage to the minimum. According to practical conditions, detection protection is respectively carried out on the inside of the battery, the closed battery cluster, the battery cabin and other parts. Meanwhile, the battery energy storage system can be started up by different levels of fire extinguishing systems through the linkage of the fire extinguishing systems and the automatic fire alarm systems, and abnormal conditions can be classified in time.
In a further preferred technical scheme of the embodiment of the invention, the method for calculating the configuration quantity of the afterburning inhibitor comprises the following steps:
the Pack-level fire extinguishing device is an independent fire extinguishing device, can be filled with fire extinguishing agents such as perfluoro-hexanone, heptafluoropropane, hot aerosol and the like, and the dosage of the Pack-level fire extinguishing device is generally not more than 500g; the cabin-level fire extinguishing device in the fire extinguishing system can be selected from the fire extinguishing devices such as perfluoro-hexanone, heptafluoropropane, hot aerosol and the like, and the configuration quantity is designed according to the relevant regulations of GB 50370;
in the embodiment of the invention, when the afterburning inhibitor device is started, the afterburning inhibitor is released to the accident battery module, the afterburning inhibitor is calculated as follows,
W 1 ＝(V 1 -V 2 )·N；
in which W is 1 The unit of the release amount of the afterburning inhibitor is kg; v (V) 1 Is the volume of the battery module, and the unit is m 3 ；V 2 The unit is m, which is the volume of the battery 3 The method comprises the steps of carrying out a first treatment on the surface of the N is the density of the afterburning inhibitor at 101Kpa standard atmospheric pressure and ambient temperature, and is expressed in kg/m 3 。
Further, when the afterburning inhibitor device is started, the influence of the pipeline on the afterburning inhibitor needs to be considered, and the calculation method for correcting the influence of the pipeline is as follows:
in a specific example, in method one, the afterburning inhibitor release is performed using pumping,
L 3 ＝|Q y |；
in a specific example, in method two, the afterburning inhibitor release is performed using a gas purge,
in which W is 2 The unit of the release amount of the afterburning inhibitor is kg; w (W) 3 The unit of the release amount of the afterburning inhibitor is kg; ρ is the density of the afterburning inhibitor in kg/m at 101Kpa normal atmospheric pressure and ambient temperature 3 The method comprises the steps of carrying out a first treatment on the surface of the m is a pumping type influence factor, and the value range is 2.25-2.55; n is a purging type influence factor, and the value range is 0.87-0.98; x is x 1 The diameter of a main pipeline of the fire extinguishing system is m; x is x 2 The diameter of a branch pipeline of the fire extinguishing system is m; x is x 3 The diameter of a branch pipeline of the fire extinguishing system is m; l (L) 1 The length of a main pipeline of the fire extinguishing system is m; l (L) 2 The length of branch pipelines of the fire extinguishing system is m; l (L) 3 The length of a branch pipeline of the fire extinguishing system is m; lambda is an influence factor of branch pipelines to branch pipelines, and the value range is 0.95-1.05; alpha is a pipeline coefficient, and the value range is 0.21-0.78; q (Q) y The position coordinates of the battery module are abnormal conditions.
In summary, in the fire control scheme for the battery energy storage system provided by the embodiment of the invention, different levels of detector response and alarm strategies are provided, so that various detectors can cooperate with each other to jointly complete different levels of fire control treatment work, abnormal conditions can be treated in a grading manner in time, and accident hazard is minimized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. A fire control system for a battery energy storage system, comprising: an alarm system, a fire suppression system and a control system; wherein,
the alarm system comprises a detector and an alarm;
the fire extinguishing system comprises a cabin-level fire extinguishing device, a re-burning inhibitor device, a Pack-level fire extinguishing device, a first fire extinguishing pipeline and a second fire extinguishing pipeline; the Pack-level fire extinguishing device is used for being arranged on each battery module of the battery energy storage system; the reburning inhibitor device is communicated with each battery module through the first fire extinguishing pipeline; the second fire extinguishing pipeline is used for being installed at the top of the battery compartment, and output ports are arranged at a plurality of preset positions of the battery compartment, and the input ports of the second fire extinguishing pipeline are communicated with the compartment-level fire extinguishing device;
the control system comprises a fire-fighting host computer, and is used for receiving the detection signals of the detector and the action signals of the Pack-level fire-extinguishing device, and controlling the opening or closing of the alarm, the cabin-level fire-extinguishing device and the reburning inhibitor device according to preset fire-fighting action logic so as to realize graded fire-fighting control.
2. The fire control system for a battery energy storage system of claim 1, wherein the detector comprises a temperature sensor, a smoke sensor, and a combustible gas sensor disposed in a battery compartment of the battery energy storage system.
3. The fire control system for a battery energy storage system of claim 1, wherein the alarm is an audible and visual alarm.
4. The fire control system for a battery energy storage system of claim 1, wherein a plurality of battery clusters are disposed in a battery compartment of the battery energy storage system, and a plurality of the battery modules are disposed in each battery cluster.
5. A fire control system for a battery energy storage system as defined in claim 1, wherein said cabin fire suppression means is also in communication with each battery module through said first fire suppression circuit.
6. The fire control system for a battery energy storage system of claim 2, wherein the preset fire action logic specifically comprises:
when any one of the temperature sensing detector, the smoke sensing detector and the combustible gas detector gives an alarm, the fire control host controls the alarm to give an alarm and outputs a fire alarm signal to an upper management system;
when only the combustible gas detector generates primary alarm, the fire control host controls the alarm to alarm, controls an exhaust system in the battery energy storage system to be started so as to ventilate the battery compartment, and outputs a fire alarm signal to an upper management system; wherein, the primary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reaches
When the combustible gas detector generates a secondary alarm, the fire-fighting host controls the exhaust system to be closed, and the next operation is performed; wherein, the secondary alarm means that the combustible gas detector detects that the concentration of any e mixed combustible gases reaches
When the combustible gas detector in the battery compartment generates secondary alarm, one or two of the temperature sensing detector and the smoke sensing detector respond, and the Pack-level fire extinguishing device does not respond, the fire control host starts countdown, controls the alarm to alarm, controls the air exhaust system in the battery energy storage system to be closed, and outputs a fire alarm signal to the upper management system; after the countdown is finished, controlling the cabin-level fire extinguishing device to be started, spraying fire extinguishing agent into the battery cabin, and outputting a fire extinguishing agent spraying signal to an upper-level management system; when the Pack-level fire extinguishing device responds, the fire-fighting host starts countdown, controls the alarm to alarm, and outputs a fire alarm signal to the upper management system; during the countdown period, if any detector in the battery compartment gives an alarm, the fire-fighting host starts the compartment-level fire-extinguishing device after the countdown is finished, sprays fire extinguishing agent into the battery compartment, simultaneously starts the re-combustion inhibitor device, and sprays re-combustion inhibitor to the accident occurring battery module; during countdown, if no detector in the battery compartment gives an alarm, the fire-fighting host only starts the reburning inhibitor device to spray the reburning inhibitor to the accident battery module.
7. The fire control system for a battery energy storage system of claim 6, wherein the initial release amount of the afterburning inhibitor to the accident cell module upon activation of the afterburning inhibitor device is calculated as,
W 1 ＝(V 1 -V 2 )·N；
in which W is 1 A release amount of a afterburning inhibitor; v (V) 1 Is the battery module volume; v (V) 2 Is the battery volume; n is the density of the afterburning inhibitor at 101Kpa standard atmospheric pressure and ambient temperature.
8. The fire control system for a battery energy storage system of claim 7, wherein the calculated expression of the amount of the afterburning inhibitor released to the accident battery module by pumping when the afterburning inhibitor device is started is,
L 3 ＝|Q y |；
wherein E is 2 For the corrected post-afterburning inhibitor release amount; ρ is the afterburning inhibitor density; m is a pumping mode influence factor; x is x 1 The diameter of a main pipeline of the fire extinguishing system; x is x 2 The diameter of a branch pipeline of the fire extinguishing system; x is x 3 The diameter of a branch pipeline of the fire extinguishing system is smaller than that of a branch pipeline of the fire extinguishing system; l (L) 1 The length of a main pipeline of the fire extinguishing system; l (L) 2 Branch pipe length for fire extinguishing system; l (L) 3 Dividing the length of a pipeline for the fire extinguishing system; lambda is the influence factor of branch pipelines to branch pipelines; alpha is a pipeline coefficient; q (Q) y And (5) the position coordinates of the battery module in abnormal conditions.
9. The fire control system for a battery energy storage system of claim 7, wherein the calculated expression of the release amount of the afterburning inhibitor to the accident cell module by means of gas purging when the afterburning inhibitor device is started is,
L 3 ＝|Q y |；
in which W is 3 For the corrected post-afterburning inhibitor release amount; ρ is the afterburning inhibitor density; n is a purging mode influence factor; x is x 1 The diameter of a main pipeline of the fire extinguishing system; x is x 2 The diameter of a branch pipeline of the fire extinguishing system; x is x 3 The diameter of a branch pipeline of the fire extinguishing system is smaller than that of a branch pipeline of the fire extinguishing system; l (L) 1 The length of a main pipeline of the fire extinguishing system; l (L) 2 Branch pipe length for fire extinguishing system; l (L) 3 Dividing the length of a pipeline for the fire extinguishing system; lambda is the influence factor of branch pipelines to branch pipelines; alpha is a pipeline coefficient; q (Q) y And (5) the position coordinates of the battery module in abnormal conditions.
10. A fire control method for a battery energy storage system, implemented with the fire control system of claim 1, the fire control method comprising the steps of:
detecting a battery compartment of the battery energy storage system through a detector, and transmitting a detection signal to the fire control controller;
detecting each battery module through the Pack-level fire extinguishing device, automatically generating action response or non-action response according to the detection result, and transmitting action signals of the Pack-level fire extinguishing device generating the action response or non-action response to the fire control controller;
the fire control host of the control system receives the detection signal of the detector and the action signal of the Pack-level fire extinguishing device, and controls the opening or closing of the alarm, the cabin-level fire extinguishing device and the reburning inhibitor device according to preset fire control action logic so as to realize graded fire control.
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