Container type energy storage cabin fire control system and method

Abstract

The invention discloses a container type energy storage cabin fire control system and method in the technical field of energy storage. The method comprises the steps that an external input signal is received; when responding to the received alarm signal in the battery compartment, controlling an audible and visual alarm outside the battery compartment to give an alarm, and outputting an early warning dry contact signal to the BMS system; starting a ventilation system in the battery compartment in response to the received low alarm signal of the combustible gas in the battery compartment; and in response to the received fire extinguishing signal, closing a ventilation system in the battery compartment, opening an electromagnetic valve of a fire extinguishing device to spray perfluorohexanone in the space in the battery compartment, and outputting a spray dry contact signal to the BMS system at the same time. The controller is used for receiving various alarm signals in the energy storage cabin and controlling the sound-light alarm, the ventilation system and the fire extinguishing device to carry out fire prevention and emergency treatment, so that the operation safety of the energy storage cabin is improved, the hidden danger of fire disasters when no personnel management exists is effectively avoided, and the personal safety and property safety of managers are protected.

Description

Technical Field

[0001] The invention relates to a fire control system and method for a container-type energy storage cabin, belonging to the technical field of energy storage. Background Art

[0002] The containerized energy storage cabin is an innovative solution that combines energy storage technology with standard containers. It integrates core components such as battery packs, battery management systems (BMS), energy storage converters (PCS), and energy management systems (EMS) into standardized containers to form a plug-and-play energy storage unit. This design not only simplifies infrastructure construction costs, but also shortens the construction period and improves modularity and the convenience of transportation and installation.

[0003] In recent years, containerized energy storage cabins have been increasingly used in the energy industry. However, since there are a large number of batteries and other energy storage devices inside the container, once a fire occurs, it will cause serious damage to the equipment and personnel, and also bring huge economic losses. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a containerized energy storage cabin fire control system and method, which receives detection signals in the container through a controller, and controls the sound and light alarm, ventilation system and fire extinguishing device to prevent fire and deal with emergencies, thereby improving the operational safety of the energy storage cabin, ensuring the safety of operation and maintenance personnel, and avoiding unnecessary property losses.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] In a first aspect, the present invention provides a containerized energy storage cabin fire control method, comprising:

[0007] Receive external input signals;

[0008] In response to receiving an alarm signal from the battery compartment, controlling the sound and light alarm outside the battery compartment to sound an alarm, and outputting an early warning dry contact signal to the BMS system;

[0009] In response to receiving a low alarm signal for flammable gas in the battery compartment, a ventilation system in the battery compartment is activated;

[0010] In response to receiving a fire extinguishing signal, the ventilation system in the battery compartment is closed, and the solenoid valve of the fire extinguishing device is opened to spray perfluorohexanone in the space inside the battery compartment, and at the same time, a spraying dry contact signal is output to the BMS system.

[0011] Furthermore, the fire extinguishing signal includes a combined alarm signal and a fire emergency start signal outside the battery compartment, and the combined alarm signal includes a smoke alarm signal plus a temperature alarm signal, a combustible gas high alarm signal plus a temperature alarm signal, a manual alarm signal plus a smoke alarm signal, a manual alarm signal plus a temperature alarm signal, and a manual alarm signal plus a combustible gas high alarm signal.

[0012] Furthermore, after the ventilation system is closed, it enters a 30-second delayed start state. After the delay ends, the solenoid valve of the fire extinguishing device is started to spray perfluorohexanone in the space inside the battery compartment.

[0013] Furthermore, after receiving the feedback signal that the solenoid valve of the fire extinguishing device has been opened, the controller turns on the warning light "Do not enter the battery compartment to release air" outside the battery compartment.

[0014] Furthermore, the BMS system uses FDS fire simulation software to establish a fire monitoring model in the energy storage cabin in advance. When the BMS system receives a spray dry contact signal in a certain area, it calculates the heat release rate of the combustion material in the area, and then calculates the characteristic diameter of the fire source of the combustion material based on the heat release rate. Finally, the grid value space is determined in combination with the characteristic diameter of the fire source and the fire monitoring model, and the grid area simulation division is performed in the container according to the grid value space to determine the fire extinguishing plan.

[0015] Furthermore, the calculation formula of the heat release rate is:

[0016] Q=α(t-t0) 2

[0017] Where: Q is the heat release rate; α is the fire growth coefficient; t is the burning time; t0 is the smoldering time.

[0018] 8. Furthermore, the calculation formula of the characteristic diameter of the fire source is:

[0019]

[0020] Where: D is the characteristic diameter of the fire source; Q is the heat release rate of the fire source; ρ is the relative density of air; C p is the specific heat of air; T is the ambient temperature; g is the acceleration due to gravity.

[0021] In a second aspect, the present invention provides a containerized energy storage cabin fire control system, comprising:

[0022] Signal receiving module: used to receive external input signals;

[0023] Sound and light alarm module: used to control the sound and light alarm outside the battery compartment to sound an alarm in response to receiving an alarm signal inside the battery compartment, and output a warning dry contact signal to the BMS system;

[0024] Ventilation start module: used to start the ventilation system in the battery compartment in response to receiving a low alarm signal of combustible gas in the battery compartment;

[0025] Fire extinguishing start module: used to respond to receiving a fire extinguishing signal, shut down the ventilation system in the battery compartment, open the solenoid valve of the fire extinguishing device to spray perfluorohexanone in the battery compartment space, and output a spraying dry contact signal to the BMS system.

[0026] In a third aspect, the present invention provides a containerized energy storage compartment fire control device, including a processor and a storage medium;

[0027] The storage medium is used to store instructions;

[0028] The processor is used to operate according to the instructions to execute the steps of any of the methods described above.

[0029] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above methods when executed by a processor.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention receives various alarm signals in the energy storage cabin through a controller, and selects to activate the sound and light alarm, ventilation system or fire extinguishing device according to different signal types, so as to provide fire warning and emergency treatment for the energy storage cabin, effectively avoid the hidden danger of fire when there is no personnel management, further improve the safety of the energy storage cabin, and protect the personal safety and property safety of the manager;

[0032] 2. The BMS system of the present invention uses FDS fire simulation software to establish a fire monitoring model in the energy storage compartment, performs grid area simulation division in the container, and determines the grid value space and fire extinguishing plan by calculating the characteristic diameter of the fire source, so as to complete the fire extinguishing of the energy storage compartment more reasonably and quickly, and further improve the fire emergency response effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of a containerized energy storage cabin fire control method provided in Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0036] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0037] Embodiment 1:

[0038] This embodiment proposes a fire control method for containerized energy storage cabins, and the overall solution is cabin-level space detection and cabin-level space protection. The fire protection plan design scope is to configure a set of perfluorohexanone fire extinguishing system in the battery cabin, and the overall solution is cabin-level detection and cabin-level spraying. Specifically including:

[0039] Two explosion-proof combustible gas detectors GT-ASD5300 / CO, two explosion-proof combustible gas detectors GT-ASD5300 / H2, four explosion-proof temperature detectors JTY-GM-TS1011(EX) and four explosion-proof smoke detectors JTWB-ZOM-TS1002(EX) are installed on the top of the battery compartment space for cabin-level detection and early warning, and the fire extinguishing device is activated in conjunction with the start-up; one explosion-proof temperature detector JTY-GM-TS1011(EX) and one explosion-proof smoke detector JTWB-ZOM-TS1002(EX) are installed on the top of the electrical compartment space for cabin-level detection and early warning, and the fire extinguishing device is not activated in conjunction with the start-up.

[0040] Four space-level fire-fighting sprinklers are installed on the top of the battery compartment to achieve compartment-level fire extinguishing.

[0041] A fire alarm controller JB-QB-TS128 / TS-MH-5001 is installed inside the electrical compartment. The controller receives data from the battery compartment detector and performs sound and light alarms, starts the device, communicates with the outside world, and links equipment according to the detection situation of the detector. In addition, a combustible gas alarm controller JB-TB-ASD5120a / 4 is installed inside the electrical compartment. Two ventilation systems (2 air intakes and 2 exhausts) are installed in the compartment, including electric air intake shutters and electric exhaust fans and their control systems. The start and stop of the system are linked to the combustible gas detector.

[0042] Each battery compartment is equipped with an audible and visual alarm, a do not deflate indicator light, an emergency start-stop switch, a fan start-stop switch, and a manual alarm button on the outer wall.

[0043] A pressure relief port is installed on the outside of the container to balance the pressure difference between inside and outside the station when the gas fire extinguisher is activated.

[0044] A pressure storage type perfluorohexanone device is installed in the electrical compartment and pipelines are arranged to the battery compartment.

[0045] The linkage logic is as follows:

[0046] 1. System automatic status:

[0047] 1) If any explosion-proof smoke alarm, explosion-proof temperature alarm, manual alarm signal, combustible gas low alarm, or combustible gas high alarm in the battery compartment is triggered, the fire protection system enters the first-level warning state, the sound and light alarm outside the door is activated, and the fire protection outputs the warning dry contact signal to the upper system.

[0048] 2) The ventilation system will be started when any combustible gas low alarm is triggered, and the ventilation will be stopped when the gas spray signal is triggered.

[0049] 3) When any of the following signals appears in the battery compartment: smoke alarm + temperature alarm, combustible gas high alarm + temperature alarm, manual alarm signal + smoke alarm, manual alarm signal + temperature alarm, manual alarm signal + combustible gas high alarm, the fire protection system enters the secondary warning state (i.e., the cabin-level fire extinguishing spraying state), and the ventilation system is shut down. The fire protection system enters the 30s delay stage, and after the delay ends, the fire protection system opens the solenoid valve of the fire extinguishing device to spray perfluorohexanone in the space. After the controller receives the feedback signal from the fire extinguishing device, the "Deflate Do Not Enter" light outside the door lights up, and at the same time outputs the spray dry contact signal to the BMS system.

[0050] 4) The explosion-proof smoke sensors and explosion-proof temperature sensors in the electrical compartment only provide alarm outputs and do not activate the fire extinguishing device.

[0051] 2. System manual status:

[0052] 1) When there is an obvious fire in the battery compartment, press the fire emergency start button to start the battery compartment-level perfluorohexanone to extinguish the fire.

[0053] 2) Before extinguishing a fire, the fire protection system will be linked to shut down the ventilation system.

[0054] In order to further improve the fire extinguishing effect, the BMS system in this solution further divides the energy storage box into regional simulations through gridding, divides the area into the optimal value space size obtained by calculation, and then calculates the specific type or object of combustion based on the heat release rate to obtain the best fire extinguishing solution, which includes:

[0055] (1) Through the FDS fire simulation software, a fire monitoring model in the energy storage cabin was established, and four fire source scenes at different locations were set. The simulation results were compared and analyzed to compare the influence of visibility, carbon monoxide, temperature and other parameters on the determination of fire level under different fire source locations. The safety limit values ​​of the three types of evacuation indicators were coupled using Tecplot. The FDS simulation software needs to divide the model space into individual small grid spaces. The density of the network will affect the simulation results. The finer the network, the more accurate the results, but the amount of calculation will increase. Therefore, when determining the network, the fire source must be evaluated to improve the calculation efficiency while ensuring accuracy. The calculation formula for the characteristic diameter of the fire source is as follows:

[0056]

[0057] Where: D is the characteristic diameter of the fire source (m); Q is the heat release rate of the fire source (kW); ρ is the relative density of air, which is 1.29 kg / m 3 To calculate; C p is the specific heat capacity of air, which is calculated using 1 kJ / (kg·K) in this paper; T is the ambient temperature, which is calculated using 293 K in this patent; g is the acceleration due to gravity, which is calculated using 9.8 m / s 2 .

[0058] According to the fire source heat release rate obtained in the laboratory, the characteristic diameter D of the fire source can be calculated, thereby obtaining the optimal grid value space.

[0059] (2) Through actual fire experiments on electrical equipment and batteries in containers, the heat release rate curve of the fire can be obtained. Generally, there are four development stages, namely, smoldering stage, growth stage, full development stage, and decay stage. The heat release rate calculation formula for simulating the use of non-steady-state fire T in the energy storage compartment is consistent with the provisions of Article 4.6.10 of GB51251-2017 Technical Standard for Building Smoke Exhaust System, which is the same as the following formula:

[0060] Q=α(t-t0) 2

[0061] Where: Q--heat release rate (kW); α--fire growth coefficient (KW / s 2 );t--burning time (s); t0--smoldering time (s).

[0062] The growth rates of combustion of different combustibles are different, and the difference is particularly obvious in the energy storage compartment. According to the fire growth rate, T can be divided into four categories, namely slow fire, fast fire, fast fire and ultra-fast fire. The electrical equipment in the container is mainly divided into energy storage batteries, junction boxes, PCS inverters, industrial air conditioners and other electrical equipment. The operator divides it according to the actual situation of the electrical equipment in the container. It should be noted that the above combustion data is obtained through the detection of relevant detectors in the container.

[0063] Embodiment 2:

[0064] A containerized energy storage cabin fire control system, which can implement a containerized energy storage cabin fire control method described in Embodiment 1, includes:

[0065] Signal receiving module: used to receive external input signals;

[0066] Sound and light alarm module: used to control the sound and light alarm outside the battery compartment to sound an alarm in response to receiving an alarm signal inside the battery compartment, and output a warning dry contact signal to the BMS system;

[0067] Ventilation start module: used to start the ventilation system in the battery compartment in response to receiving a low alarm signal of combustible gas in the battery compartment;

[0068] Fire extinguishing start module: used to respond to receiving a fire extinguishing signal, shut down the ventilation system in the battery compartment, open the solenoid valve of the fire extinguishing device to spray perfluorohexanone in the battery compartment space, and output a spraying dry contact signal to the BMS system.

[0069] Embodiment three:

[0070] The embodiment of the present invention further provides a container-type energy storage cabin fire control device, which can implement the container-type energy storage cabin fire control method described in the first embodiment, including a processor and a storage medium;

[0071] The storage medium is used to store instructions;

[0072] The processor is used to operate according to the instructions to perform the steps of the following method:

[0073] Receive external input signals;

[0074] In response to receiving an alarm signal from the battery compartment, controlling the sound and light alarm outside the battery compartment to sound an alarm, and outputting an early warning dry contact signal to the BMS system;

[0075] In response to receiving a low alarm signal for flammable gas in the battery compartment, a ventilation system in the battery compartment is activated;

[0076] In response to receiving a fire extinguishing signal, the ventilation system in the battery compartment is closed, and the solenoid valve of the fire extinguishing device is opened to spray perfluorohexanone in the space inside the battery compartment, and at the same time, a spraying dry contact signal is output to the BMS system.

[0077] Embodiment 4:

[0078] The embodiment of the present invention further provides a computer-readable storage medium, which can implement the container-type energy storage cabin fire control method described in the first embodiment, and stores a computer program thereon, which implements the steps of the following method when the program is executed by a processor:

[0079] Receive external input signals;

[0080] In response to receiving an alarm signal from the battery compartment, controlling the sound and light alarm outside the battery compartment to sound an alarm, and outputting an early warning dry contact signal to the BMS system;

[0081] In response to receiving a low alarm signal for flammable gas in the battery compartment, a ventilation system in the battery compartment is activated;

[0082] In response to receiving a fire extinguishing signal, the ventilation system in the battery compartment is closed, and the solenoid valve of the fire extinguishing device is opened to spray perfluorohexanone in the space inside the battery compartment, and at the same time, a spraying dry contact signal is output to the BMS system.

[0083] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0084] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0085] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0086] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A containerized energy storage cabin fire control method, characterized in that: Executed by the controller, including: Receive external input signals; In response to receiving an alarm signal from the battery compartment, controlling the sound and light alarm outside the battery compartment to sound an alarm, and outputting an early warning dry contact signal to the BMS system; In response to receiving a low alarm signal for flammable gas in the battery compartment, a ventilation system in the battery compartment is activated; In response to receiving a fire extinguishing signal, the ventilation system in the battery compartment is closed, and the solenoid valve of the fire extinguishing device is opened to spray perfluorohexanone in the space inside the battery compartment, and at the same time, a spraying dry contact signal is output to the BMS system.

2. The containerized energy storage cabin fire control method according to claim 1 is characterized in that: The fire extinguishing signal includes a combined alarm signal and a fire emergency start signal outside the battery compartment, and the combined alarm signal includes a smoke alarm signal plus a temperature alarm signal, a combustible gas high alarm signal plus a temperature alarm signal, a manual alarm signal plus a smoke alarm signal, a manual alarm signal plus a temperature alarm signal, and a manual alarm signal plus a combustible gas high alarm signal.

3. The containerized energy storage cabin fire control method according to claim 1 is characterized in that: After the ventilation system is closed, it enters a 30-second delayed start state. After the delay ends, the solenoid valve of the fire extinguishing device starts to spray perfluorohexanone in the battery compartment.

4. The containerized energy storage cabin fire control method according to claim 1 is characterized in that: After the controller receives the feedback signal that the solenoid valve of the fire extinguishing device has been opened, the warning light for not entering the battery compartment to release air is turned on.

5. The containerized energy storage cabin fire control method according to claim 1 is characterized in that: The BMS system uses the FDS fire simulation software to establish a fire monitoring model in the energy storage cabin in advance. When the BMS system receives a spray dry contact signal in a certain area, it calculates the heat release rate of the burning material in the area, and then calculates the characteristic diameter of the fire source of the burning material based on the heat release rate. Finally, the grid value space is determined in combination with the characteristic diameter of the fire source and the fire monitoring model, and the grid area simulation division is performed in the container according to the grid value space to determine the fire extinguishing plan.

6. The containerized energy storage cabin fire control method according to claim 5 is characterized in that: The calculation formula of the heat release rate is: Q=α(t-t0) 2 Where: Q is the heat release rate; α is the fire growth coefficient; t is the burning time; t0 is the smoldering time.

7. The containerized energy storage cabin fire control method according to claim 6 is characterized in that: The calculation formula of the characteristic diameter of the fire source is: Where: D is the characteristic diameter of the fire source; Q is the heat release rate; ρ is the relative density of air; C p is the specific heat of air; T is the ambient temperature; g is the acceleration due to gravity.

8. A containerized energy storage cabin fire control system, characterized in that: include: Signal receiving module: used to receive external input signals; Sound and light alarm module: used to control the sound and light alarm outside the battery compartment to sound an alarm in response to receiving an alarm signal inside the battery compartment, and output a warning dry contact signal to the BMS system; Ventilation start module: used to start the ventilation system in the battery compartment in response to receiving a low alarm signal of combustible gas in the battery compartment; Fire extinguishing start module: used to respond to receiving a fire extinguishing signal, shut down the ventilation system in the battery compartment, open the solenoid valve of the fire extinguishing device to spray perfluorohexanone in the battery compartment space, and output a spraying dry contact signal to the BMS system.

9. A containerized energy storage compartment fire control device, characterized in that: including processor and storage medium; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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