Fire extinguishing method and system for energy storage container

Abstract

The invention discloses a fire extinguishing method and system for an energy storage container. The method comprises the steps that whether the internal environment of the energy storage container is changed or not is judged, a dangerous case is detected and sent back to a fire alarm controller, whether the energy storage container is in a controllable fire-fighting state or not is judged, and monitoring, exhausting and power-off operation is conducted based on the sent-back detection data. Whether the internal environment of the energy storage container is deteriorated or not is judged, a fire alarm controller is sent back when dangerous case upgrading is detected, whether the energy storage container is in an out-of-control dangerous case state or not is judged, and alarming, exhausting and fire extinguishing operation is conducted based on the current operation mode and the button state. Alarm, closing and fire extinguishing operations are carried out based on the current operation mode and the button state, the control mode can be switched, in the manual mode, only alarm is carried out without linkage with the gas fire extinguishing system to avoid maintenance mistaken spraying, and in the automatic mode, timing delay and suppression functions can cope with emergency scenes. And stable and reliable fire safety protection can be provided for the energy storage container, and the risk of fire disasters is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of energy storage container technology, and in particular to a fire extinguishing method and system for energy storage containers. Background Technology

[0002] Energy storage containers are modular energy storage solutions that use standard containers as carriers and integrate energy storage battery packs, energy storage converters (PCS), battery management systems (BMS), temperature control systems, fire protection systems, and intelligent monitoring platforms. They integrate dispersed energy storage components into a unified whole through standardized design, featuring flexible deployment, convenient expansion, and safe and controllable operation. They can be used individually as small energy storage units for industrial and commercial load regulation and emergency power supply, or multiple containers can be connected in parallel to form large-scale energy storage power stations, adapting to the consumption needs of new energy power generation such as wind power and photovoltaic power, as well as the peak shaving and frequency regulation needs of the grid.

[0003] Fires in energy storage containers are often triggered by thermal runaway reactions within single or several battery cells. The heat released by this reaction can cause adjacent batteries to subsequently experience thermal runaway, leading to a chain reaction of thermal runaway within the module. This causes the fire to spread rapidly in a short period of time, releasing flammable and toxic gases, hindering the escape of people inside the fire and impacting firefighting efforts, potentially causing more serious accidents and damage. Currently, the water mist fire suppression systems commonly used in containers can extinguish fires by spraying water mist from nozzles, but they are less effective at extinguishing fires involving energized items. Even if the fire is small, activating the system may still affect surrounding intact items, impacting their normal use. Furthermore, because the battery modules are energized, the water mist can interfere with firefighters' operations and reduce firefighting efficiency. Especially when the container contains items such as lithium battery modules that can easily exacerbate the fire, traditional water mist fire suppression systems often struggle to control the spread of the fire in a timely and effective manner, exhibiting significant limitations. In addition, converting firefighting water into water mist spray usually requires an external high-pressure water pump, which increases the complexity and cost of the system. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fire extinguishing method and system for energy storage containers.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a fire extinguishing method for an energy storage container, comprising: The fire alarm controller continuously queries the fire detection module to determine whether the internal environment of the energy storage container has changed. When the fire detection component inside the energy storage container detects a hazard, it sends the data back to the fire alarm controller to determine whether the fire is under control. Based on the returned detection data, the controller performs monitoring, venting, and power-off operations. The fire alarm controller continuously queries the fire detection module and the local control panel to determine whether the internal environment of the energy storage container has deteriorated. When the fire detection module inside the energy storage container detects an escalation of the danger, it sends a signal back to the fire alarm controller to determine whether the situation is out of control. Based on the current operating mode and button status, it performs alarm, ventilation, and fire extinguishing operations.

[0006] In some embodiments, the alarm, closure, and fire extinguishing operations based on the current operating mode and button status include: Based on automatic mode and button status, alarm, ventilation, and fire extinguishing operations are performed; or Alarm, ventilation, and fire extinguishing operations are performed based on manual mode and button status.

[0007] In some embodiments, the alarm, venting, and fire extinguishing operations based on automatic mode and button status include: The fire alarm controller determines that the mode switch button has not been pressed, and the current operating mode is automatic. It receives detection signals from the fire detection module in real time to determine the hazard status. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The process of releasing the agent after a delay will then begin.

[0008] In some embodiments, the delayed-release drug process includes: The system performs a delay based on a preset time and checks whether the local control panel's suppress button is pressed during the delay period. If the suppression button has been pressed, the preset delay time will be reset and a delay will be performed. If the suppression button has not been pressed, the gas extinguishing agent will be released after the delay ends. Release the agent according to the preset action and determine whether the gas extinguishing agent release is successful; If a decrease in the pressure of the fire extinguishing gas cylinder is detected, a release success signal is sent; if no change in the pressure of the fire extinguishing gas cylinder is detected, a release failure signal is sent.

[0009] In some embodiments, the alarm, venting, and fire extinguishing operations based on manual mode and button status include: The fire alarm controller has determined that the mode switch button has been pressed, and the current operating mode is manual mode. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The delayed release of the agent will not be initiated.

[0010] In some embodiments, the alarm, venting, fire extinguishing, and maintenance operations based on manual mode and button status further include: The fire alarm controller determines that pressing the silencing mode button will silence the alarm indicator lights on the audible and visual display panel; or The fire alarm controller detects that the manual release button has been pressed and initiates the delayed release process of the chemical agent.

[0011] In some embodiments, the combustible gas detector in the fire detection module is equipped with an alarm threshold of 10% LEL; When the concentration of combustible gas is ≥10%LEL, start the ventilation and exhaust system to perform ventilation and exhaust operations. When the concentration of combustible gas is less than 10% LEL, shut down the ventilation and exhaust components to terminate the ventilation operation.

[0012] In some embodiments, when the fire detection module detects that the hazard is controllable, the audible and visual indicator panel activates a level one alarm under any of the following three conditions: The smoke detector detected an increase in smoke concentration; or The temperature sensor detected a rise in temperature; or When the combustible gas detector detects combustible gas reaching the first-level threshold.

[0013] In some embodiments, when the fire detection module detects an out-of-control hazard, the audible and visual indicator panel activates a level two alarm under the following conditions: The smoke detector detected an increase in smoke concentration, and the temperature detector detected an increase in temperature; or Manually release the button operation.

[0014] In a second aspect, the present invention also provides a fire extinguishing system for an energy storage container, used to operate the fire extinguishing method for an energy storage container as described in the first aspect, the fire extinguishing system comprising: The fire alarm system includes a fire alarm controller, a fire detection module, a local control panel, an input / output module, and an audible and visual indicator panel. It is used to determine whether the situation is out of control and to perform alarm, ventilation, and fire extinguishing operations based on the current operating mode and button status. The fire detection module includes a heat detector, a smoke detector, and a combustible gas detector, which are used to monitor fire hazard data in the energy storage cabinet in real time. A gas extinguishing system includes extinguishing gas cylinders, fire pipelines, gas nozzles, solenoid valves, and pressure gauges, and is used in conjunction with a fire alarm system to perform fire extinguishing operations. The ventilation and exhaust system, including a fan, push rod motor and louvers, is used to control the ventilation and exhaust operation inside the energy storage container to remove flammable gases in the early stages of an emergency.

[0015] The present invention has the following beneficial effects: This invention monitors the internal status of the energy storage container through multiple detectors in the fire detection module. In the event of an emergency, the ventilation and exhaust system components are activated via the fire alarm controller. Based on the current operating mode and button status, alarm, closure, and fire extinguishing operations are performed. The system can switch between manual and automatic modes via a mode switch button. In manual mode, only an alarm is triggered without triggering the gas extinguishing system to avoid accidental spraying during maintenance. In automatic mode, the timer delay and suppression functions can handle emergency scenarios, providing stable and reliable fire safety protection for the energy storage container and effectively reducing the risk of fire. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the fire extinguishing method for energy storage containers proposed in this invention. Figure 1 ; Figure 2 This is a flowchart illustrating the fire extinguishing method for energy storage containers proposed in this invention. Figure 2 ; Figure 3 This is a schematic diagram illustrating the principle of the fire extinguishing method for energy storage containers proposed in this invention.

[0017] Legend: 1. Fire alarm system; 2. Gas extinguishing system; 3. Ventilation and exhaust system. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This application provides a fire extinguishing method and system for energy storage containers, solving the problems of existing water mist fire extinguishing systems that interfere with firefighters' operations, reduce extinguishing efficiency, and are particularly problematic when the container contains items that can easily exacerbate a fire, such as lithium battery modules. These water mist systems are difficult to control in a timely and effective manner, increasing system complexity and cost. This application, however, performs alarm, closure, and extinguishing operations based on current operating modes and button states. It allows switching between manual and automatic modes via a mode switch button. In manual mode, only an alarm is triggered without triggering the gas extinguishing system to avoid accidental spraying during maintenance. In automatic mode, timed delay and suppression functions can handle emergency scenarios, providing stable and reliable fire safety protection for energy storage containers and effectively reducing the risk of fire.

[0020] Please refer to the following examples for details: Reference Figures 1-2 An embodiment of a fire extinguishing method for an energy storage container provided by the present invention includes: S100, the fire alarm controller continuously polls the fire detection module to determine whether the internal environment of the energy storage container has changed. When the fire detection component inside the energy storage container detects a hazard, it sends the data back to the fire alarm controller to determine whether the fire is under control. Based on the returned detection data, it performs monitoring, venting, and power-off operations. S200: The fire alarm controller continuously queries the fire detection module and the local control panel to determine whether the internal environment of the energy storage container has deteriorated. When the fire detection module inside the energy storage container detects an escalation of the hazard, it sends a signal back to the fire alarm controller to determine whether the situation is out of control. Based on the current operating mode and button status, it performs alarm, ventilation, and fire extinguishing operations.

[0021] For example, the fire alarm controller continuously polls to receive monitoring data from the fire detection modules (including intelligent photoelectric smoke detectors, intelligent photoelectric heat detectors, and combustible gas detectors) in real time, dynamically determining whether there are any abnormal changes in the internal environment of the energy storage container. Specifically, this includes whether the smoke concentration exceeds the standard, whether the temperature exceeds the limit, and whether the concentration of combustible gases such as hydrogen generated by the thermal runaway of the battery cluster increases. When the fire detection components detect a hazard and transmit the signal back, the controller first determines that the current fire situation is under control (no double fire confirmation, no signs of severe risk spread), and then performs corresponding operations based on the transmitted detection data: if the combustible gas detector detects that the threshold is exceeded, the controller activates the push rod motor of the ventilation and exhaust system 3 through the input and output modules to open the louvers and simultaneously turns on the fan to exhaust the combustible gas, preventing the concentration from accumulating and causing an explosion; if a single detector alarms, the controller only triggers the first-level alarm on the audible and visual indicator panel, continuously monitors the changes in the hazard, and temporarily does not activate the fire extinguishing system; if the detection data shows that there is an initial safety hazard in the energized equipment, it will also disconnect the power supply to some non-core equipment to prevent the hazard from being aggravated by electrical factors, maintaining precise control over controllable risks throughout the process; Furthermore, based on the continuous querying of the fire detection module, the fire alarm controller simultaneously obtains the button status signals of the local control panel to comprehensively judge whether the internal environment of the energy storage container has escalated into a dangerous situation (such as the simultaneous appearance of smoke and high temperature, continuous increase in the concentration of combustible gas exceeding the exhaust control range, rapid spread of a single danger, etc.). When the fire detection module detects an escalation of the danger and sends back a signal, the controller determines that it is currently in an out-of-control dangerous state, and then executes the linkage operation of alarm, exhaust, and fire extinguishing according to the current system operation mode (automatic / manual) and the button status of the local control panel.

[0022] Furthermore, alarm, shutdown, and fire extinguishing operations are performed based on the current operating mode and button status, including: (1) Perform alarm, ventilation, and fire extinguishing operations based on automatic mode and button status; or (2) Perform alarm, exhaust and fire extinguishing operations based on manual mode and button status.

[0023] For example, alarm, ventilation, and fire extinguishing operations based on automatic mode and button status include: The fire alarm controller determines that the mode switch button has not been pressed, and the current operating mode is automatic. It receives detection signals from the fire detection module in real time to determine the hazard status. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The process of releasing the agent after a delay will then begin.

[0024] For example, the fire alarm controller first identifies whether the mode switching related buttons (the service inhibit button of the fire alarm controller and the agent inhibit button of the local control station) are pressed, and determines that no mode switching button is pressed, and the current operating mode is automatic mode; then it receives the detection signals returned by the fire detection modules (including intelligent photoelectric smoke detectors, intelligent photoelectric heat detectors, and combustible gas detectors) in real time, and judges the danger status by combining the signal type (single detector alarm / multiple detector linkage alarm) to ensure accurate identification of the initial risk of lithium battery thermal runaway; If the situation is determined to be under control (e.g., only a combustible gas detector detects a concentration exceeding the threshold, or a single smoke / heat detector triggers an alarm without dual fire confirmation), the fire alarm controller, through a single input / output module, links the push rod motor of the ventilation and exhaust system 3 to drive the louvers to fully open. Simultaneously, it activates the exhaust and intake devices to work together to quickly expel combustible gases from the energy storage container, preventing the accumulation of concentrations that could lead to an explosion. Simultaneously, it triggers the flashing of the fire alarm indicator on the audible and visual display panel and emits a level one alarm sound, visually alerting on-site personnel to excessive combustible gas levels or the initial risk of a fire. This alarm signal is also simultaneously uploaded to the monitoring center for remote, real-time monitoring of the situation. If the situation is determined to be out of control (e.g., smoke detectors and heat detectors in the same energy storage compartment alarm simultaneously, meeting the double-confirmation fire judgment logic), the fire alarm controller immediately closes the louvers via the input / output module's linkage push rod motor, and simultaneously shuts down the fan (to prevent outside air from entering and aiding combustion, or to prevent the agent from being diluted by the airflow during release); simultaneously, it triggers the flashing of the fire alarm (FIRE ALARM) and do not enter (DO NOT ENTER) indicator lights on the audible and visual indicator panel, and emits a level two alarm sound, strongly indicating that a fire has occurred and that personnel are prohibited from entering; at the same time, it directly triggers the gas extinguishing system 2 to enter the delayed release agent process, ensuring that the fire is quickly brought under control.

[0025] It should be explained in detail that the delayed-release drug process includes: The system performs a delay based on a preset time and checks whether the local control panel's suppress button is pressed during the delay period. If the suppression button has been pressed, the preset delay time will be reset and a delay will be performed. If the suppression button has not been pressed, the gas extinguishing agent will be released after the delay ends. Release the agent according to the preset action and determine whether the gas extinguishing agent release is successful; If a decrease in the pressure of the fire extinguishing gas cylinder is detected, a release success signal is sent; if no change in the pressure of the fire extinguishing gas cylinder is detected, a release failure signal is sent.

[0026] For example, a preset 30-second delay is initiated, and the fire alarm controller monitors the status of the agent inhibition button on the local control panel in real time. If the button is triggered, the current delay is immediately terminated, and the preset delay time is reset to 30 seconds before the countdown restarts (applicable to special scenarios where the discharge needs to be paused). If the button is not triggered, after the 30-second delay period, the fire alarm controller sends a start signal to the solenoid valve of the gas extinguishing system 2 to release the agent (perfluorohexanone agent is delivered to the gas nozzle through the fire pipeline) according to the preset action. During the release process, the pressure gauge on the extinguishing gas cylinder collects pressure data in real time and feeds it back to the controller. If a significant decrease in the pressure of the extinguishing gas cylinder is detected, a release success signal is sent to the fire control panel and monitoring center. If no change in the pressure of the extinguishing gas cylinder is detected (possibly due to solenoid valve failure, pipeline blockage, etc.), a release failure signal is immediately sent, and a release failure alarm is triggered simultaneously, prompting personnel to take manual remedial measures.

[0027] Correspondingly, alarm, venting, and fire extinguishing operations are performed based on manual mode and button status, including: The fire alarm controller has determined that the mode switch button has been pressed, and the current operating mode is manual mode. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The delayed release of the agent will not be initiated.

[0028] For example, the fire alarm controller first identifies whether the mode switching related buttons (the service inhibit button of the fire alarm controller and the agent inhibit button of the local control station) are pressed. If it is determined that either mode switching button has been pressed, the current operating mode is manual mode (mainly used in scenarios where maintenance personnel enter the container to prevent the system from accidentally spraying). In manual mode, the controller continues to receive detection signals from the fire detection module and judges the hazard status based on the signal strength and type, but the linkage logic only retains the alarm and exhaust functions, and temporarily disables the automatic fire extinguishing function. If the situation is determined to be under control (e.g., only a combustible gas detector detects a concentration exceeding the threshold, or a single smoke / heat detector triggers an alarm without dual fire confirmation), the linkage logic of the fire alarm controller is consistent with the automatic mode: the input / output module links the push rod motor to open the louvers, and simultaneously activates the exhaust and intake devices to expel combustible gas and prevent its accumulation; at the same time, the fire alarm indicator on the audible and visual indicator panel flashes and emits a first-level alarm sound, intuitively alerting on-site personnel to the risk of excessive combustible gas or initial fire, and the alarm signal is simultaneously uploaded to the monitoring center for remote real-time monitoring of the situation; If the situation is determined to be out of control (e.g., smoke detectors and heat detectors in the same energy storage compartment alarm simultaneously, meeting the double-confirmation fire judgment logic), the fire alarm controller will close the louvers and shut down the fan via the input / output module's linkage push rod motor (to prevent the fire from spreading or being fueled by outside air); simultaneously, it will trigger the fire alarm and do not enter indicator lights on the audible and visual indicator panel to flash and emit a level two alarm sound, strongly indicating that a fire has occurred and that personnel are prohibited from entering; at the same time, it will directly trigger the gas extinguishing system 2 to enter the delayed release agent process to ensure that the fire is quickly brought under control.

[0029] It should be noted in detail that alarm, venting, fire extinguishing, and maintenance operations based on manual mode and button status also include: The fire alarm controller determines that pressing the silencing mode button will silence the alarm indicator lights on the audible and visual display panel; or The fire alarm controller detects that the manual release button has been pressed and initiates the delayed release process of the chemical agent.

[0030] For example, in manual mode, if the alarm sound of the audible and visual indicator panel interferes with the operation during maintenance work, the fire alarm controller will immediately silence the alarm sound of the audible and visual indicator panel (the indicator light will continue to flash to retain the visual warning) after detecting that the silence mode (SILENCE BUZZER) button on the local control panel has been pressed. If a new alarm signal is triggered subsequently, the alarm sound will automatically resume. In addition, when personnel confirm on-site that a fire needs to be extinguished, the fire alarm controller detects that the manual release button on the local control panel has been pressed and immediately enters the same delayed release process as the automatic mode (also with a 30-second delay, can be paused / reset, and the pressure gauge provides feedback on the release status), ensuring that fire extinguishing can be started quickly even in manual mode, taking into account both maintenance safety and fire response efficiency.

[0031] Reference Figure 3The present invention also provides an embodiment of an energy storage container fire extinguishing system for operating the energy storage container fire extinguishing method described in the above embodiment. The fire extinguishing system includes: a fire alarm system 1, a gas fire extinguishing system 2, and a ventilation and exhaust system 3. Among them, the fire alarm system 1 includes a fire alarm controller, a fire detection module, a local control panel, an input / output module and an audible and visual indicator panel, which are used to determine whether the situation is out of control and perform alarm, ventilation and fire extinguishing operations based on the current operating mode and button status; The fire alarm system, as the core control unit, integrates a fire alarm controller (with gas extinguishing function, serving as the core for system signal processing and command issuance, enabling automatic / manual mode switching, alarm record storage, and equipment status monitoring) and a local control panel (equipped with multiple function buttons for on-site operation and mode switching); while the input / output modules are used for linkage control of non-fire-fighting equipment (such as the push rod motor and louvers of the ventilation and exhaust system 3, and cutting off the power supply in the energy storage box); the audible and visual indicator panel has primary and secondary alarm display functions (when a primary alarm occurs, the fire alarm indicator flashes and a primary alarm sound is emitted; when a secondary alarm occurs, the fire alarm and do not enter indicator flash and a secondary alarm sound is emitted). Understandably, the fire alarm controller receives real-time data from the fire detection module to determine whether the energy storage container is in an out-of-control emergency state. Based on the current system operation mode (automatic / manual) and the button trigger status on the local control panel, it coordinates the execution of alarm, exhaust, and activation of the gas extinguishing system 2 to ensure the accuracy and timeliness of emergency response.

[0032] It should be explained in detail that the fire detection module, as a front-end monitoring component, includes an intelligent photoelectric smoke detector (which uses photoelectric sensing to monitor changes in smoke concentration caused by battery thermal runaway inside the energy storage container in real time, and sends an alarm signal when the smoke reaches a preset detection threshold), an intelligent photoelectric temperature detector (which monitors the temperature inside the compartment through a temperature sensing element, and triggers a signal when the temperature exceeds the normal operating range and reaches an alarm threshold), and a combustible gas detector (which detects combustible gases such as hydrogen released by the thermal runaway of the battery clusters to determine whether ventilation is required). It can continuously collect fire hazard data (smoke, temperature, and combustible gas concentration) inside the energy storage cabinet and transmit the data to the fire alarm controller in real time, providing accurate basis for the system to judge the hazard level and avoiding protection failure caused by false alarms or missed alarms from a single detector.

[0033] Furthermore, the gas extinguishing system 2, as the core execution unit for fire suppression, consists of extinguishing gas cylinders (containing 60KG of perfluorohexanone extinguishing agent, which complies with Australian fire safety regulations and has the characteristics of high-efficiency fire extinguishing and non-corrosiveness to equipment), fire pipelines (made of corrosion-resistant materials, designed according to the internal layout of the energy storage container to ensure that the agent can be evenly delivered to each battery cluster area), gas nozzles (with rapid discharge characteristics, which can complete the spraying of all agents within 10 seconds to achieve rapid suppression of the fire), solenoid valves (as the control switch for agent discharge, which opens after receiving the start signal from the fire alarm controller to control the release of agents in the extinguishing gas cylinders), and pressure gauges (installed on the extinguishing gas cylinders to monitor the pressure inside the cylinders in real time, and to provide feedback on the agent release status to the fire alarm controller through pressure changes during discharge). Understandably, the gas extinguishing system 2 works in conjunction with the instructions of the fire alarm system 1 to perform fire extinguishing operations. When the fire alarm controller determines that the danger is out of control and triggers the fire extinguishing process, the gas extinguishing system 2 starts according to the preset logic and quickly extinguishes the fire by releasing the agent, reducing the risk of equipment damage and personnel casualties.

[0034] Furthermore, the ventilation and exhaust system 3 serves as a prevention and control unit for the early stages of a hazard, including a fan (designed to be explosion-proof and with high exhaust efficiency, used to quickly exhaust flammable gases from the compartment), a push rod motor (which serves as the driving component for the louvers, controlling the opening and closing of the louvers after receiving a linkage signal), and louvers (installed at the ventilation openings of the energy storage container, regulating airflow within the compartment by opening and closing). Understandably, the ventilation and exhaust system 3 controls the ventilation and exhaust operations inside the energy storage container. In the early stages of an emergency, it opens the louvers and fans to expel the flammable gases accumulated inside the container, preventing the concentration from rising to the explosion threshold. This reduces the risk of fire or explosion from the source and buys time for subsequent fire response. At the same time, during the gas extinguishing stage, the louvers and fans can be closed according to instructions to prevent outside air from entering and aiding combustion or diluting the extinguishing agent, thus ensuring the extinguishing effect.

[0035] It should be noted that the combustible gas detector in the fire detection module is set with an alarm threshold of 10% LEL; When the combustible gas detector detects a combustible gas concentration ≥10%LEL inside the energy storage container, it immediately transmits an alarm signal to the fire alarm controller. The controller then synchronously links the BMS monitoring system and input / output module to activate the ventilation and exhaust system. The ventilation and exhaust operation is performed as follows: First, the input / output module sends a command to the push rod motor to fully open the louvers, ensuring unobstructed ventilation. Then, the fan (the exhaust and intake devices operate in tandem) is activated to create air convection inside the container, quickly expelling the accumulated combustible gas to a safe outdoor area and reducing the concentration of combustible gas inside the container. The entire linkage process requires no manual intervention, achieving automated prevention and control in the early stages of an emergency. When the combustible gas detector detects that the concentration of combustible gas in the cabin is less than 10% LEL, it is determined that the risk of combustible gas in the cabin has been eliminated. The detector sends a concentration drop signal back to the fire alarm controller, which then issues a stop command: controls the push rod motor to close the louvers through the input / output module, and stops the fan operation to terminate the ventilation operation.

[0036] Furthermore, when the fire detection module detects that the hazard is controllable, the audible and visual indicator panel will activate the Level 1 alarm if any of the following three conditions are met: The smoke detector detected an increase in smoke concentration; or The temperature sensor detected a rise in temperature; or When the combustible gas detector detects combustible gas reaching the first-level threshold.

[0037] Understandably, when any of the above conditions are met, the fire alarm indicator on the sound and light indicator panel will flash and a level one alarm sound will be emitted simultaneously, which will intuitively remind on-site personnel of the risk of excessive combustible gas or initial fire. The alarm signal will also be uploaded to the monitoring center at the same time, so as to facilitate remote real-time monitoring of the danger. Correspondingly, when the fire detection module detects an out-of-control hazard, the audible and visual indicator panel will activate a level two alarm under the following conditions: The smoke detector detected an increase in smoke concentration, and the temperature detector detected an increase in temperature; or Manually release the button operation.

[0038] Understandably, when any of the above conditions are met, the fire alarm (FIREALARM) and do not enter (DO NOT ENTER) indicator lights on the audible and visual indicator panel will flash simultaneously, and a level two alarm sound will be emitted to strongly indicate that a fire has occurred and that personnel are prohibited from entering; at the same time, the gas extinguishing system will be directly triggered to enter the delayed release agent process to ensure that the fire is quickly brought under control.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fire extinguishing method for an energy storage container, characterized in that, include: The fire alarm controller continuously queries the fire detection module to determine whether the internal environment of the energy storage container has changed. When the fire detection component inside the energy storage container detects a hazard, it sends the data back to the fire alarm controller to determine whether the fire is under control. Based on the returned detection data, the controller performs monitoring, venting, and power-off operations. The fire alarm controller continuously queries the fire detection module and the local control panel to determine whether the internal environment of the energy storage container has deteriorated. When the fire detection module inside the energy storage container detects an escalation of the danger, it sends a signal back to the fire alarm controller to determine whether the situation is out of control. Based on the current operating mode and button status, it performs alarm, ventilation, and fire extinguishing operations.

2. The fire extinguishing method according to claim 1, characterized in that, The alarm, shutdown, and fire extinguishing operations based on the current operating mode and button status include: Based on automatic mode and button status, alarm, ventilation, and fire extinguishing operations are performed; or Alarm, ventilation, and fire extinguishing operations are performed based on manual mode and button status.

3. The fire extinguishing method according to claim 2, characterized in that, The alarm, ventilation, and fire extinguishing operations based on automatic mode and button status include: The fire alarm controller determines that the mode switch button has not been pressed, and the current operating mode is automatic. It receives detection signals from the fire detection module in real time to determine the hazard status. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The process of releasing the agent after a delay will then begin.

4. The fire extinguishing method according to claim 3, characterized in that, The delayed-release drug process includes: The system performs a delay based on a preset time and checks whether the local control panel's suppress button is pressed during the delay period. If the suppression button has been pressed, the preset delay time will be reset and a delay will be performed. If the suppression button has not been pressed, the gas extinguishing agent will be released after the delay ends. Release the agent according to the preset action and determine whether the gas extinguishing agent release is successful; If a decrease in the pressure of the fire extinguishing gas cylinder is detected, a release success signal is sent; if no change in the pressure of the fire extinguishing gas cylinder is detected, a release failure signal is sent.

5. The fire extinguishing method according to claim 2, characterized in that, The alarm, venting, and fire extinguishing operations based on manual mode and button status include: The fire alarm controller has determined that the mode switch button has been pressed, and the current operating mode is manual mode. If the situation is under control, the louvers will be opened by linking the push rod motor through the input / output module, and the fan will be started to discharge combustible gas. The indicator lights on the sound and light indicator panel will flash and a level one alarm sound will be emitted to indicate the risk of excessive combustible gas. If the situation becomes uncontrollable, the louvers will be closed by linking the push rod motor through the input / output module, and the fan will be shut down. The indicator lights on the sound and light indicator panel will flash and a level two alarm sound will be emitted to indicate the risk of fire. The delayed release of the agent will not be initiated.

6. The fire extinguishing method according to claim 5, characterized in that, The alarm, venting, fire extinguishing, and maintenance operations based on manual mode and button status also include: The fire alarm controller determines that pressing the silencing mode button will silence the alarm indicator lights on the audible and visual display panel; or The fire alarm controller detects that the manual release button has been pressed and initiates the delayed release process of the chemical agent.

7. The fire extinguishing method according to claim 1, characterized in that, The combustible gas detector in the fire detection module is equipped with an alarm threshold of 10% LEL. When the concentration of combustible gas is ≥10%LEL, start the ventilation and exhaust system to perform ventilation and exhaust operations. When the concentration of combustible gas is less than 10% LEL, shut down the ventilation and exhaust components to terminate the ventilation operation.

8. The fire extinguishing method according to claim 1, characterized in that, When the fire detection module detects a controllable hazard, the audible and visual indicator panel will activate a Level 1 alarm if any one of the following three conditions is met: The smoke detector detected an increase in smoke concentration; or The temperature sensor detected a rise in temperature; or When the combustible gas detector detects combustible gas reaching the first-level threshold.

9. The fire extinguishing method according to claim 8, characterized in that, When the fire detection module detects an out-of-control hazard, the audible and visual indicator panel will activate a level two alarm under the following conditions: The smoke detector detected an increase in smoke concentration, and the temperature detector detected an increase in temperature; or Manually release the button operation.

10. A fire extinguishing system for an energy storage container, characterized in that, The fire extinguishing system is used to operate the fire extinguishing method for energy storage containers as described in any one of claims 1 to 9, and the fire extinguishing system comprises: The fire alarm system includes a fire alarm controller, a fire detection module, a local control panel, an input / output module, and an audible and visual indicator panel. It is used to determine whether the situation is out of control and to perform alarm, ventilation, and fire extinguishing operations based on the current operating mode and button status. The fire detection module includes a heat detector, a smoke detector, and a combustible gas detector, which are used to monitor fire hazard data in the energy storage cabinet in real time. A gas extinguishing system includes extinguishing gas cylinders, fire pipelines, gas nozzles, solenoid valves, and pressure gauges, and is used in conjunction with a fire alarm system to perform fire extinguishing operations. The ventilation and exhaust system, including a fan, push rod motor and louvers, is used to control the ventilation and exhaust operation inside the energy storage container to remove flammable gases in the early stages of an emergency.

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