Energy storage battery safety protection system

Abstract

The application discloses a kind of energy storage battery safety protection systems, comprising: fire signal acquisition module, core controller and fire extinguishing processing module, fire signal acquisition module gathers the temperature and voltage in energy storage battery and outputs alarm level, hydrogen, carbon monoxide concentration, temperature and smoke concentration in energy storage battery container are transmitted to core controller;Controller is based on first preset determination condition and carries out local fire extinguishing judgment and second preset determination condition and carries out global fire extinguishing judgment, when determining local fire extinguishing, hot runaway alarm signal is sent, global fire extinguishing, and all submergence fire extinguishing alarm signal is sent;Fire extinguishing processing module executes corresponding fire extinguishing action according to alarm signal.The application is whether battery pack appears hot runaway by two fire extinguishing judgment conditions and needs to carry out local fire extinguishing and whether energy storage battery container occurs fire, can timely and effectively control the battery pack hot runaway of energy storage battery to the fire generated in battery pack timely and effectively respond fire extinguishing measure.

Description

Technical Field

[0001] This invention relates to the field of fire protection technology for energy storage batteries, and specifically to a safety protection system for energy storage batteries. Background Technology

[0002] Energy storage technology is a crucial means to meet the large-scale integration of renewable energy and an important component of distributed energy systems and the electric vehicle industry. Energy storage batteries possess advantages such as high efficiency, good dynamic characteristics, long service life, and minimal impact from terrain, making them widely used in energy storage power stations, battery swapping stations, and other scenarios. However, due to the reactivity of the battery electrodes and the instability of the electrolyte, during use, factors such as short circuits in the external circuitry, internal materials, overcharging, or mechanical damage caused by impacts or compression can trigger thermal runaway in energy storage batteries. This can lead to exothermic chemical reactions between internal materials, potentially causing fires or explosions, severely impacting the safety performance of energy storage power stations.

[0003] Existing fire emergency response solutions for energy storage batteries involve storing the batteries in sealed energy storage stations. In the event of a fire, water is used to extinguish the fire inside the station. For example, water pumps are used to quickly immerse and cool the batteries, spraying is used to quickly cool flammable parts of the batteries, inert gas / heptafluoropropane is used to extinguish the fire, and liquid nitrogen is used to instantly freeze the batteries and extinguish the fire. However, these solutions cannot effectively control the thermal runaway of the battery pack. The large amount of heat generated by the thermal runaway can quickly spread to adjacent batteries, making it difficult to contain the spread of thermal runaway and thus maintaining a high risk of battery pack fire. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects existing in the prior art, thereby providing a safety protection system for energy storage batteries.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a safety protection system for energy storage batteries, comprising: a fire signal acquisition module, a core controller, and a fire extinguishing module. The core controller is electrically connected to both the fire signal acquisition module and the fire extinguishing module.

[0007] The fire signal acquisition module includes: a battery management system, an online hydrogen concentration analyzer, an online carbon monoxide concentration analyzer, multiple temperature detectors, and multiple smoke detectors, which are used to collect the temperature and voltage inside the energy storage battery and output the alarm level, the concentration of hydrogen, the concentration of carbon monoxide, the temperature, and the smoke concentration inside the energy storage battery container and transmit them to the core controller.

[0008] The core controller makes a local fire extinguishing judgment based on the temperature and voltage alarm levels inside the energy storage battery, the concentration of hydrogen, carbon monoxide, temperature and smoke inside the energy storage battery container, and makes a global fire extinguishing judgment based on the first preset judgment condition. When the judgment result is local fire extinguishing, a thermal runaway alarm signal is issued; when the judgment result is global fire extinguishing, a total flooding fire extinguishing alarm signal is issued.

[0009] The fire suppression module includes a local fire suppression module, a fire extinguishing agent supply module, and a total flooding treatment module. Based on the issuance of a thermal runaway alarm signal or a total flooding fire suppression alarm signal, the fire extinguishing agent supply module is activated to supply the local fire suppression module or the total flooding treatment module to perform fire suppression measures.

[0010] In one embodiment, the concentration alarms of the online hydrogen concentration analyzer and the online carbon monoxide concentration analyzer are divided into three levels: low concentration, high concentration, and ultra-high concentration, based on preset concentration thresholds. Low concentration is a level one alarm, high concentration is a level two alarm, and ultra-high concentration is a level three alarm. When the energy storage battery experiences thermal runaway and generates hydrogen or carbon monoxide, it is necessary to stop the charging and discharging operation. The alarm information is sent to the battery management system through protocol conversion by the core controller.

[0011] The battery management system outputs the internal temperature and voltage drop information of the energy storage battery to the core controller as temperature abnormality alarm signals and voltage drop alarm signals of the system: taking a battery cluster as the basic unit, the highest and second highest values ​​of the cell temperature in the cluster are sent to the core controller; taking a battery cluster as the basic unit, the lowest value of the cell voltage in the cluster is sent to the core controller.

[0012] In one embodiment, the step of determining local fire extinguishing based on a first preset determination condition includes:

[0013] The core controller determines that a battery pack has experienced thermal runaway and requires local fire suppression when any two of the following alarm signals are received: a high temperature level 2 alarm from the battery management system, a voltage drop level 2 alarm from the battery management system, a hydrogen concentration level 2 alarm from the online hydrogen concentration analyzer, a carbon monoxide concentration level 2 alarm from the online carbon monoxide concentration analyzer, or an alarm signal from a point-type heat sensor or a point-type smoke detector.

[0014] In one embodiment, the step of determining local fire extinguishing based on a second preset determination condition includes:

[0015] Alarm signals from any two point-type heat detectors and point-type smoke detectors at different addresses can be used as the determination signal for a fire in an energy storage battery container, requiring global fire suppression.

[0016] In one embodiment, the energy storage battery safety protection system further includes: a gas release lamp and an audible and visual alarm, both installed at the entrance of the container to alert personnel and prompt them to take appropriate measures; the core controller is electrically connected to a field display control box, which is located at the entrance of the energy storage battery container and is used to control the fire extinguishing module to select between manual and automatic operation modes. In manual operation mode, the core controller only issues an alarm signal and does not output an action signal, and the manual start operation is achieved through the field display control box located at the entrance of the energy storage container. In automatic control mode, the air conditioning system is shut down in conjunction with the thermal runaway alarm signal or the total flooding fire extinguishing alarm signal, and the audible and visual alarm and gas release lamp are activated.

[0017] In one embodiment, if any point-type smoke detector or any point-type heat detector alarms, the battery management system outputs a low-temperature level one alarm signal, a voltage drop level one alarm signal, or any gas concentration level one / two alarm signal, the core controller activates the container's external audible and visual alarm signal and sends the alarm information to the battery management system. Staff should closely monitor the subsequent developments and activate the manual mode as necessary based on the actual situation.

[0018] In one embodiment, the field display control box is equipped with a touch screen and multiple buttons for querying and setting system status information, alarm information, real-time temperature and gas concentration information, manual / automatic working status, one-button start / stop function for unit protection, container total flooding protection, opening and closing of liquid replenishment switch, and starting and stopping of emergency ventilation system.

[0019] In one embodiment, the fire suppression module includes: a fire extinguishing agent supply module, a total flooding treatment module, and a local fire suppression module, wherein:

[0020] The extinguishing agent supply module includes a storage container containing the extinguishing agent, a dedicated pump set, an extinguishing agent delivery pipeline, and a zone control valve connected thereto. The extinguishing agent delivery pipeline includes a total flooding pipeline network and a battery pack active protection pipeline network. The dedicated pump set includes several pumps, and each pump is connected to a selector valve between the total flooding pipeline network and the battery pack active protection pipeline network. The zone control valve and the selector valve are electrically connected to the core controller.

[0021] The total flooding treatment module includes total flooding atomizing nozzles, which are mounted on top of the energy storage battery container to control the spray rate of the extinguishing agent;

[0022] The local fire suppression module includes a battery pack-customized atomizing nozzle, which is installed at the air inlet on the back of each battery pack casing to control the spray rate of the extinguishing agent.

[0023] In one embodiment, the energy storage battery safety protection system further includes:

[0024] When the core manager issues a total flooding fire extinguishing alarm signal, the electrical management system issues an instruction to shut down the air conditioning system and supercapacitor fan inside the container, cut off the relevant power supply, and initiate total flooding fire extinguishing. At the same time, it sends out fire confirmation signals and action feedback signals.

[0025] Control and communication interfaces are used for remote control of the core controller from the fire control room.

[0026] In one embodiment, the core controller adjusts and updates the alarm threshold of the smoke detector based on the historical average mass concentration of smoke particles and a preset threshold value for the fluctuation of mass concentration changes.

[0027] The technical solution of this invention has the following advantages:

[0028] 1. The present invention provides a safety protection system for energy storage batteries, which uses two fire extinguishing judgment conditions to determine whether the battery pack has thermal runaway and requires local fire extinguishing, and whether the energy storage battery container has caught fire. This system can effectively control the thermal runaway of the energy storage battery pack and respond to fires that occur within the battery pack in a timely manner.

[0029] 2. This invention utilizes the principle that a large amount of smoke is rapidly generated and enters the detector in a short period of time when smoke occurs. An alarm baseline threshold dynamic adjustment strategy is set in the core controller, which effectively solves the problem of false alarms easily generated by smoke detectors. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a framework diagram of the energy storage battery safety protection system in an embodiment of the present invention. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Example

[0035] This invention provides a safety protection system for energy storage batteries, such as... Figure 1 As shown, it specifically includes: a fire signal acquisition module, a core controller, and a fire extinguishing processing module. The core controller is electrically connected to both the fire signal acquisition module and the fire extinguishing processing module.

[0036] The fire alarm signal acquisition module includes: a battery management system, an online hydrogen concentration analyzer, an online carbon monoxide concentration analyzer, multiple temperature detectors, and multiple smoke detectors. These are used to collect the temperature and voltage inside the energy storage battery, the concentration of hydrogen, carbon monoxide, temperature, and smoke inside the energy storage battery container, and transmit the data to the core controller. The core controller, based on the temperature and voltage alarm levels inside the energy storage battery, and the concentrations of hydrogen, carbon monoxide, temperature, and smoke inside the energy storage battery container, performs a local fire suppression judgment based on a first preset judgment condition, and a global fire suppression judgment based on a second preset judgment condition. When the judgment result is local fire suppression, a thermal runaway alarm signal is issued; when the judgment result is global fire suppression, a total flooding fire suppression alarm signal is issued. The fire suppression processing module includes: a local fire suppression module, a fire extinguishing agent supply module, and a total flooding processing module. Based on the issued thermal runaway alarm signal or total flooding fire suppression alarm signal, the fire extinguishing agent supply module is activated to supply the local fire suppression module or the total flooding processing module to execute fire suppression measures.

[0037] The energy storage battery safety protection system provided in this embodiment of the invention uses two fire extinguishing judgment conditions: whether the battery pack has thermal runaway and whether the energy storage battery container has caught fire. This allows for timely and effective control of thermal runaway of the energy storage battery pack, preventing the large amount of heat generated by thermal runaway from spreading rapidly to adjacent energy storage batteries, and timely and effective fire extinguishing measures for fires occurring within the battery pack.

[0038] The hydrogen concentration online analyzer in this embodiment of the invention is coded and can detect the hydrogen PPM concentration inside the energy storage battery container in real time, and send the real-time data to the core controller. The detection range is 0-1000ppm, the resolution is 10ppm, and the response time (T90) is <70s. The carbon monoxide concentration online analyzer is coded and can detect the carbon monoxide PPM concentration inside the energy storage battery container in real time, and send the real-time data to the core controller. The detection range is 0-500ppm, the resolution is 1ppm, and the response time (T90) is <30s. The point-type temperature detector and the point-type smoke detector are installed on the top of the container in a ceiling-mounted manner for detecting container fires.

[0039] In this embodiment of the invention, the concentration alarms of the online hydrogen concentration analyzer and the online carbon monoxide concentration analyzer are divided into three levels: low concentration, high concentration, and ultra-high concentration, based on preset concentration thresholds. Low concentration is a level one alarm, high concentration is a level two alarm, and ultra-high concentration is a level three alarm. The core controller determines the multi-level alarm based on the temperature and voltage output by the battery management system and preset judgment thresholds.

[0040] In one specific embodiment, the process of determining local fire suppression based on the first preset judgment condition includes: the core controller determines that a battery pack has experienced thermal runaway and requires local fire suppression when any two of the following alarm signals are received: a high temperature level 2 alarm from the battery management system, a voltage drop level 2 alarm from the battery management system, a hydrogen concentration level 2 alarm from the online hydrogen concentration analyzer, a carbon monoxide concentration level 2 alarm from the online carbon monoxide concentration analyzer, or an alarm signal from a point-type heat sensor or a point-type smoke detector. It should be noted that the high temperature alarm level and voltage drop alarm level output by the battery management system are determined based on the temperature and voltage alarm level thresholds set internally by the system, and are not specifically limited here.

[0041] In one specific embodiment, local fire extinguishing judgment is made based on a second preset judgment condition, including: alarm signals from any two point-type heat detectors and point-type smoke detectors at different addresses are used as judgment signals for a fire in an energy storage battery container, requiring global fire extinguishing.

[0042] The energy storage battery safety protection system of this invention also includes: a gas release lamp and an audible and visual alarm, both installed at the entrance of the container to alert personnel and prompt them to take appropriate measures; the core controller is electrically connected to a field display control box, which is located at the entrance of the energy storage battery container and is used to control the fire extinguishing module to select manual or automatic operation mode. In manual operation mode, the core controller only issues an alarm signal and does not output an action signal. Manual activation is achieved through the field display control box located at the entrance of the energy storage container. In automatic control mode, the air conditioning system is shut down in conjunction with the thermal runaway alarm signal or the total flooding fire extinguishing alarm signal, and the audible and visual alarm and gas release lamp are activated. In practice, if any point-type smoke detector alarm signal, any point-type heat detector alarm signal, the battery management system outputs a low temperature level one alarm signal, the battery management system outputs a voltage drop level one alarm signal, or any gas concentration level one / two alarm signal, the core controller activates the audible and visual alarm signal outside the container and sends the alarm information to the battery management system. Personnel should closely monitor the subsequent development and activate the manual mode as necessary based on the actual situation.

[0043] In a specific embodiment, the overall dimensions of the field display control box are: length * width * height = 600 * 700 * 2000 (mm). It is installed in an enclosure with an IP54 rating or higher and equipped with a safety lock. It includes a touchscreen and multiple buttons for querying and setting system status information, alarm information, real-time temperature and gas concentration information, manual / automatic operating status, one-button start / stop function for unit protection, container total flooding protection, opening and closing of the liquid replenishment switch, and starting and stopping of the emergency ventilation system. The manual / automatic operating status can be set via the touchscreen or a manual / automatic switch (knob); the container total flooding protection is achieved using a total flooding emergency start / stop button (self-locking); the emergency ventilation system is started and stopped using an emergency ventilation switch button (self-locking); and the liquid replenishment switch is opened and closed using a liquid replenishment switch button (self-locking). After the hydrogen and carbon monoxide alarm signals are cleared, the emergency ventilation system can be manually shut down via the field display controller. After this action, the emergency ventilation system should switch back to manual control mode.

[0044] The fire extinguishing module in this embodiment of the invention includes: an extinguishing agent supply module, a total flooding module, and a local fire extinguishing module. The extinguishing agent supply module includes a storage container for the extinguishing agent, a dedicated pump set, extinguishing agent delivery pipelines, and zone control valves connected in sequence. The extinguishing agent delivery pipelines include a total flooding network and a battery pack active protection network. The dedicated pump set includes several pumps, each connected to a selector valve between the pumps and the total flooding network and the battery pack active protection network. The zone control valves and selector valves are electrically connected to the core controller. The total flooding module includes a total flooding atomizing nozzle installed on the top of the energy storage battery container to control the spray rate of the extinguishing agent. The local fire extinguishing module includes a battery pack-customized atomizing nozzle installed at the air inlet on the back of each battery pack casing to control the spray rate of the extinguishing agent. If, after the initial discharge, the energy storage battery continues to release heat and combustible gas, and the system again determines that a thermal runaway alarm has occurred, the system will restart the discharge process until the thermal runaway alarm signal is cleared.

[0045] Specifically, the extinguishing agent storage container contains perfluorohexanone extinguishing agent, which mainly suppresses the development of battery thermal runaway and extinguishes fires caused by thermal runaway by cooling and absorbing heat through vaporization. The capacity design of the perfluorohexanone and storage container should meet the needs of the active protection subsystem for multiple handling of battery thermal runaway. The system is configured with 180 kg of perfluorohexanone extinguishing agent.

[0046] A dedicated pump set provides power for the delivery of perfluorohexanone (PFH) extinguishing agent. It is an electric pump with a rated working pressure of 2 MPa and a flow rate of 28 L / min. A normally closed selector valve, made of stainless steel, is located at the pump outlet and opens to guide the PPH extinguishing agent into the total flooding network or the battery pack active protection network. A normally closed zone control valve, made of brass, is installed on top of the battery rack and opens to guide the release of PPH extinguishing agent to the target area requiring protection. The atomizing nozzles installed inside the container are divided into battery pack-specific atomizing nozzles and total flooding atomizing nozzles. The battery pack-specific atomizing nozzles are installed at the air inlet on the back of each battery pack casing, controlling the spray rate of the PPH extinguishing agent and releasing it as a mist into the battery pack; they are made of stainless steel. The total flooding atomizing nozzles are installed on the ceiling of the aisle inside the container, controlling the spray rate of the PPH extinguishing agent and releasing it as a mist into the container space; they are also made of stainless steel.

[0047] In this embodiment of the invention, the core controller is equipped with a point-type smoke detector calibration strategy, including the following steps:

[0048] S1: Obtain the historical mass concentration of smoke particles; obtain the mass concentration of smoke particles at certain time intervals, group the obtained mass concentrations according to time sequence, and take all mass concentrations before the current collection time as the historical mass concentration.

[0049] S2: Calculate the change in mass concentration based on the historical mass concentration.

[0050] The mean of the most recent set of mass concentration data before the previous acquisition time is used to calculate the change value E[X(n)] for each set:

[0051] E[X(n)]=X(n)-An

[0052] Where: X(n) is the nth mass concentration data in the group, and An is the mean of the data in the group;

[0053] S3: Determine whether the fluctuation value of the mass concentration change is less than the set allowable fluctuation threshold. If yes, return to S1; otherwise, proceed to S4. Calculate the variance S of the most recent set of mass concentration data before the acquisition time, and determine whether the variance S is greater than the variance threshold. If yes, return to S1; otherwise, determine whether the fluctuation value of the mass concentration change is less than the set allowable fluctuation threshold.

[0054] S3 specifically includes the following steps:

[0055] Determine if the following conditions are met:

[0056] Emax-Emin<L

[0057] Where: Emax is the maximum change value, Emin is the minimum change value, and L is the allowable fluctuation threshold; if yes, no processing is done and return to S1; otherwise, proceed to S4.

[0058] S4: Adjust and update the alarm threshold using the average historical mass concentration, and return to S1. The adjusted alarm threshold is calculated using the following formula:

[0059] T = KAn + B

[0060] Where: K is the conversion factor, and B is the deviation value. The specific value is determined according to the actual application scenario and is not subject to specific restrictions.

[0061] This invention utilizes the principle that a large amount of smoke is rapidly generated and enters the detector within a short period of time when smoke occurs, and sets up a dynamic adjustment strategy for the alarm baseline threshold, which effectively solves the problem of false alarms easily generated by smoke detectors.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A safety protection system for energy storage batteries, characterized in that, include: The system comprises a fire signal acquisition module, a core controller, and a fire extinguishing processing module. The core controller is electrically connected to both the fire signal acquisition module and the fire extinguishing processing module. The fire signal acquisition module includes: a battery management system, an online hydrogen concentration analyzer, an online carbon monoxide concentration analyzer, multiple temperature detectors, and multiple smoke detectors, which are used to collect the temperature and voltage inside the energy storage battery and output the alarm level, the concentration of hydrogen, the concentration of carbon monoxide, the temperature, and the smoke concentration inside the energy storage battery container and transmit them to the core controller. The core controller makes a local fire extinguishing judgment based on the temperature and voltage alarm levels inside the energy storage battery, the concentration of hydrogen, carbon monoxide, temperature and smoke inside the energy storage battery container, and makes a global fire extinguishing judgment based on the first preset judgment condition. When the judgment result is local fire extinguishing, a thermal runaway alarm signal is issued; when the judgment result is global fire extinguishing, a total flooding fire extinguishing alarm signal is issued. The fire suppression module includes a local fire suppression module, a fire extinguishing agent supply module, and a total flooding module. Upon receiving a thermal runaway alarm signal or a total flooding fire suppression alarm signal, the fire extinguishing agent supply module is activated to supply the local fire suppression module or the total flooding module with fire suppression measures. The concentration alarms of the online hydrogen concentration analyzer and the online carbon monoxide concentration analyzer are divided into three levels based on preset concentration thresholds: low concentration, high concentration, and ultra-high concentration. Low concentration is a level one alarm, high concentration is a level two alarm, and ultra-high concentration is a level three alarm. When the energy storage battery experiences thermal runaway and generates hydrogen or carbon monoxide, it is necessary to stop the charging and discharging process. The alarm information is sent to the battery management system via protocol conversion through the core controller. The battery management system outputs the internal temperature and voltage drop information of the energy storage battery to the core controller as temperature abnormality alarm signal and voltage drop alarm signal of the system: taking a battery cluster as the basic unit, the highest and second highest values ​​of the cell temperature in the cluster are sent to the core controller; taking a battery cluster as the basic unit, the lowest value of the cell voltage in the cluster is sent to the core controller. The determination of local fire extinguishing based on the first preset judgment condition includes: The core controller determines that a battery pack has experienced thermal runaway and requires local fire suppression when any two of the following alarm signals are received: a high temperature level 2 alarm from the battery management system, a voltage drop level 2 alarm from the battery management system, a hydrogen concentration level 2 alarm from the online hydrogen concentration analyzer, a carbon monoxide concentration level 2 alarm from the online carbon monoxide concentration analyzer, or an alarm signal from a point-type heat sensor or a point-type smoke detector.

2. The energy storage battery safety protection system according to claim 1, characterized in that, The determination of local fire extinguishing based on the second preset judgment condition includes: Alarm signals from any two point-type heat detectors and point-type smoke detectors at different addresses can be used as the determination signal for a fire in an energy storage battery container, requiring global fire suppression.

3. The energy storage battery safety protection system according to claim 1, characterized in that, Also includes: Gas release lights and audible and visual alarms are installed at the entrance of the container to alert personnel and prompt them to take appropriate measures. The core controller is electrically connected to a field display control box, which is located at the entrance of the energy storage battery container. The field display control box is used to control the fire extinguishing module to select between manual and automatic operation modes. In manual operation mode, the core controller only issues an alarm signal and does not output an action signal. The manual start operation is achieved through the field display control box located at the entrance of the energy storage container. In automatic control mode, the air conditioning system is shut down and the audible and visual alarms and gas release lights are activated in conjunction with the thermal runaway alarm signal or the total flooding fire extinguishing alarm signal.

4. The energy storage battery safety protection system according to claim 3, characterized in that, When any point-type smoke detector or any point-type heat detector alarms, the battery management system outputs a low-temperature level one alarm signal, a voltage drop level one alarm signal, or any gas concentration level one / two alarm signal. The core controller then activates the external audible and visual alarm signal of the container and sends the alarm information to the battery management system.

5. The energy storage battery safety protection system according to claim 3, characterized in that, The field display control box is equipped with a touch screen and multiple buttons for querying and setting system status information, alarm information, real-time temperature and gas concentration information, manual / automatic working status, one-button start / stop function for unit protection, container total flooding protection, opening and closing of liquid replenishment switch, and starting and stopping of emergency ventilation system.

6. The energy storage battery safety protection system according to claim 1, characterized in that, The extinguishing agent supply module includes a storage container containing the extinguishing agent, a dedicated pump set, an extinguishing agent delivery pipeline, and a zone control valve connected thereto. The extinguishing agent delivery pipeline includes a total flooding pipeline network and a battery pack active protection pipeline network. The dedicated pump set includes several pumps, and each pump is connected to a selector valve between the total flooding pipeline network and the battery pack active protection pipeline network. The zone control valve and the selector valve are electrically connected to the core controller. The total flooding treatment module includes a total flooding atomizing nozzle, which is installed on top of the energy storage battery container to control the spray rate of the extinguishing agent; the local extinguishing module includes a battery pack-customized atomizing nozzle, which is installed at the air inlet position on the back of each battery pack shell to control the spray rate of the extinguishing agent.

7. The energy storage battery safety protection system according to claim 1, characterized in that, Also includes: The fire alarm system, when the core manager issues a total flooding fire extinguishing alarm signal, the electrical management system issues an instruction to shut down the container's air conditioning system and supercapacitor fan, cut off the relevant power supply, and initiate total flooding fire extinguishing. At the same time, it outputs a fire confirmation signal and an action feedback signal. The control and communication interface is used by the fire control room to remotely control the core controller.

8. The energy storage battery safety protection system according to claim 1, characterized in that, The core controller adjusts and updates the alarm threshold of the smoke detector based on the historical average mass concentration of smoke particles and the preset fluctuation threshold of mass concentration change value.

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