Multi-fire-fighting system of energy storage cabin

Abstract

The invention provides a multi-fire-fighting system of an energy storage cabin, and relates to the technical field of fire-fighting monitoring, the multi-fire-fighting system comprises a fire-fighting management module, a first fire detection pipeline and a second fire detection pipeline; the fire-fighting management module is connected with the two fire detection pipelines, and the second fire detection pipeline is filled with a fire extinguishing agent; the two fire detection pipelines sequentially enter each battery pack, and the first fire detection pipeline is attached to an anti-explosion valve of each battery cell in the battery pack; under the condition that the energy storage cabin is powered on and runs, when the fire-fighting management module detects that the temperature in the battery cabin rises, the first fire detection pipeline is filled with a fire extinguishing agent, so that the first fire detection pipeline is fused after the battery cell is out of control and the anti-explosion valve is exploded, and the fire extinguishing agent is used for extinguishing the battery cell; and under the condition that the energy storage cabin is powered off, the battery cells in the battery pack are out of control and erupt heat to fuse the second fire detection pipeline, so that the fire extinguishing agent is used for extinguishing the battery pack. According to the system, the reliability of the fire fighting system is effectively improved, rapid response and timely control of initial fire disasters are realized, and electric core level fire fighting is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire monitoring, and in particular to a multiple fire protection system of an energy storage cabin. Background Art

[0002] The chemical energy storage industry is developing rapidly and has a broad application prospect. Among them, electrochemical energy storage represented by lithium-ion batteries has become the mainstream. As an energy body, lithium-ion batteries are prone to thermal runaway at any time. At the same time, thermal runaway may also occur in the case of abuse such as overcharge and discharge and short circuit during storage and use. When out of control, a violent reaction occurs inside the battery, resulting in an exothermic state that generates a large amount of heat and harmful gases, and may cause a fire. At the same time, harmful gases can also cause damage to people's lives, health and property safety. Therefore, the fire safety issue of electrochemical energy storage projects has become a very important issue.

[0003] In existing electrochemical energy storage projects, the fire protection measures of the energy storage cabin are single and not comprehensive enough. Usually, only aerosol fire extinguishing devices or single canned fire extinguishing agents are configured to deal with possible fires in the entire battery cabin. The fire point cannot be accurately located. At the same time, it is impossible to identify and respond to accidents in time when the energy storage cabin is powered off, which eventually causes the fire to spread, leading to greater losses. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multiple fire protection system for an energy storage cabin, which solves the technical problems in the prior art that the fire protection measures of the energy storage cabin are single, the fire point cannot be accurately located, and the fire cannot be extinguished in time to respond to the occurrence of accidents.

[0005] The present invention provides a multiple fire protection system of an energy storage cabin, wherein the energy storage cabin is arranged in an energy storage cabinet, the energy storage cabin comprises a battery cabin, a plurality of battery packs are placed in the battery cabin, the system comprises a fire protection management module, a first fire detection pipeline and a second fire detection pipeline;

[0006] The fire management module is arranged in the energy storage cabinet and is connected to the first fire detection pipeline and the second fire detection pipeline respectively, and the second fire detection pipeline is filled with a fire extinguishing agent;

[0007] The first fire detection pipeline and the second fire detection pipeline enter each of the battery packs in sequence, and the first fire detection pipeline is arranged in close contact with the explosion-proof valve of each battery cell in the battery pack;

[0008] When the energy storage compartment is powered on and running, when the fire management module detects that the temperature in the battery compartment is rising, the fire extinguishing agent is filled into the first fire detection pipeline, so that the first fire detection pipeline is melted after the battery cell is out of control and the explosion-proof valve explodes, and the fire extinguishing agent is used to extinguish the fire of the battery cell;

[0009] In the event of a power outage in the energy storage compartment, the heat generated by the uncontrolled eruption of the battery cells in the battery pack melts the second fire detection pipeline, so that the fire in the battery pack can be extinguished using a fire extinguishing agent.

[0010] Optionally, a reserved hole is opened on the battery pack, and the battery cells in the battery pack lose control and emit heat through the reserved hole;

[0011] The second fire detection pipeline extends into each of the battery packs in turn and is fitted in the reserved hole in the battery pack.

[0012] Optionally, a fire extinguishing agent storage tank is further provided in the energy storage cabinet, and the fire extinguishing agent storage tank stores a fire extinguishing agent, and the fire extinguishing agent is perfluorohexanone liquid;

[0013] The fire management module is connected to the fire extinguishing agent storage tank, and the fire extinguishing agent storage tank is also connected to the first fire detection pipeline and the second fire detection pipeline respectively;

[0014] The fire management module controls the fire extinguishing agent storage tank to fill the fire extinguishing agent into the second fire detection pipeline, and controls the fire extinguishing agent storage tank to fill the fire extinguishing agent into the first fire detection pipeline after the fire management module detects that the temperature in the battery compartment rises.

[0015] Optionally, the fire extinguishing agent storage tank includes a storage cylinder, a container valve, a siphon, a signal feedback device and a pressure gauge;

[0016] The storage cylinder is used to store fire extinguishing agent, the container valve is arranged at the outlet of the storage cylinder, one end of the siphon tube extends into the storage cylinder and is located below the liquid level of the fire extinguishing agent in the storage cylinder, the other end of the siphon tube is connected to the container valve, and the container valve is respectively connected to the first fire detection pipeline and the second fire detection pipeline;

[0017] The pressure gauge is arranged on the outer wall of the storage cylinder;

[0018] The signal feedback device is connected to the storage cylinder and the fire management module respectively, and is used to obtain the working status information of the storage cylinder and feed the working status information back to the fire management module.

[0019] Optionally, an electromagnetic coil is provided on the top of the fire extinguishing agent storage tank, and the electromagnetic coil is electrically connected to the fire management module;

[0020] When the fire management module sends an electrical signal to the electromagnetic coil to indicate the filling of the fire extinguishing agent, the electromagnetic coil is energized to open the outlet channel of the fire extinguishing agent storage tank, and uses the internal pressure to fill the fire extinguishing agent in the fire extinguishing agent storage tank into the first fire detection pipeline or the second fire detection pipeline.

[0021] Optionally, the energy storage cabin further includes an electrical cabin, characterized in that the system further includes an aerosol fire extinguishing device, the aerosol fire extinguishing device is arranged on the top of the electrical cabin, and the fire management module is connected to the aerosol fire extinguishing device;

[0022] The aerosol fire extinguishing device is used to spray based on the control of the fire management module when the temperature in the electrical compartment reaches a preset safety temperature, so as to extinguish the fire in the electrical compartment.

[0023] Optionally, the system further comprises a water sprinkler fire protection pipeline;

[0024] The water inlet of the water sprinkler fire-fighting pipeline is arranged at the bottom of the energy storage cabinet, and a movable joint is reserved at the water inlet, and the movable joint is used to connect an external water inlet pipeline, and the external water inlet pipeline injects water into the water sprinkler fire-fighting pipeline;

[0025] The water outlet of the water sprinkler fire-fighting pipeline is connected to a fire sprinkler nozzle, and the fire sprinkler nozzle is arranged on the top of the battery compartment;

[0026] When the battery cell is out of control, the fire sprinkler head sprays the battery compartment to extinguish the fire.

[0027] Optionally, a composite detection alarm is provided in the battery compartment, the composite detection alarm is connected to the fire management module, and the composite detection alarm includes a detection unit and an alarm unit;

[0028] The detection unit includes a smoke detection sensor, a carbon monoxide gas detection sensor, a hydrogen detection sensor, a temperature monitoring sensor and a battery liquid leakage gas detection sensor, and the detection unit is used to detect environmental information in the battery compartment and send the environmental information to the fire management module;

[0029] The alarm unit is based on the control of the fire management module and issues an alarm when the fire management module controls the first fire detection pipeline to perform a fire extinguishing action.

[0030] Optionally, the system further includes a master control management module and a plurality of slave control management modules, and the number of the slave control management modules is equal to the number of the battery packs;

[0031] The slave control management module is set in one-to-one correspondence with the battery pack and is used to collect temperature data of the battery pack;

[0032] The master control management module is respectively connected to each of the slave control management modules for receiving the temperature data of each of the battery packs and sending the temperature data to the fire protection management module;

[0033] When the main control management module detects that the temperature data of any of the battery packs exceeds a safety threshold, the main control management module cuts off the relay switch of the energy storage compartment to stop the energy storage compartment from supplying power.

[0034] Optionally, when the fire management module controls the first fire detection pipeline to perform a fire extinguishing action, the fire management module simultaneously disconnects the circuit breakers on the AC and DC sides of the energy storage compartment and cuts off the power supply of the energy storage compartment to stop the energy storage compartment from working.

[0035] The multiple fire protection system of the energy storage cabin provided in the present application is designed with two sets of independently working fire detection pipelines, wherein the first fire detection pipeline is used to fill the fire extinguishing agent to extinguish the out-of-control battery cell based on the control of the fire protection management module when the energy storage cabin is powered on, while the second fire detection pipeline is pre-filled with the fire extinguishing agent and can extinguish the accidentally out-of-control battery cell when the energy storage cabin is powered on. The two sets of fire detection pipelines respectively perform emergency treatment for different working conditions of the energy storage cabin, effectively increasing the reliability of the entire fire protection system; the fire detection pipeline directly extends to the inside of each battery pack, and even the first fire detection pipeline is directly fitted with the explosion-proof valve of the battery cell in the battery pack, which can quickly detect potential fire risks when the temperature of the battery cell rises abnormally, and release the fire extinguishing agent at the same time as the explosion-proof valve explodes, thereby achieving rapid response and timely control of the initial fire; the fire detection pipeline can effectively prevent the thermal runaway from spreading to adjacent battery cells or other components by individually monitoring and immediately intervening in the battery cells in the battery pack, thereby limiting the impact of the accident to a minimum range, reducing the overall degree of loss, and achieving battery cell-level fire protection.

[0036] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0037] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0039] Figure 1 A schematic diagram of the structure of a multiple fire protection system of an energy storage cabin in an embodiment provided in the present application;

[0040] Figure 2 A schematic diagram of the first fire detection pipeline in the multiple fire protection system of the energy storage cabin and each battery cell in the battery pack in an embodiment provided by the present application;

[0041] Figure 3 A schematic diagram of the structure of a water sprinkler fire-fighting pipeline in a multiple fire-fighting system of an energy storage cabin in one embodiment provided in the present application.

[0042] In the figure:

[0043] 1. Fire management module; 2. First fire detection pipeline; 3. Second fire detection pipeline; 4. Fire extinguishing agent storage tank; 5. Composite detection alarm; 6. Aerosol fire extinguishing device;

[0044] PACK, battery pack. DETAILED DESCRIPTION

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The present invention provides a multi-fire protection system of an energy storage compartment, wherein the energy storage compartment is arranged in an energy storage cabinet, and the energy storage compartment includes a battery compartment, and a plurality of battery packs are placed in the battery compartment, such as Figure 1 As shown, the system includes a fire management module 1, a first fire detection pipeline 2 and a second fire detection pipeline 3; the fire management module 1 is arranged in the energy storage cabinet, and is connected to the first fire detection pipeline 2 and the second fire detection pipeline 3 respectively, and the second fire detection pipeline 3 is filled with a fire extinguishing agent; the first fire detection pipeline 2 and the second fire detection pipeline 3 enter each battery pack in turn, as shown in FIG. Figure 2 As shown, the first fire detection pipeline 2 is fitted with the explosion-proof valve of each battery cell in the battery pack; when the energy storage cabin is powered on and running, when the fire management module 1 detects that the temperature in the battery cabin is rising, the first fire detection pipeline 2 is filled with fire extinguishing agent, so that the first fire detection pipeline 2 melts after the battery cell loses control and the explosion-proof valve explodes, and the fire extinguishing agent is used to extinguish the fire in the battery cell; when the energy storage cabin is powered off, the battery cell in the battery pack loses control and emits heat to melt the second fire detection pipeline 3, so that the fire extinguishing agent is used to extinguish the fire in the battery pack.

[0049] The multiple fire protection system of the energy storage cabin provided in the present application is designed with two sets of independently working fire detection pipelines, wherein the first fire detection pipeline 2 is used to fill the fire extinguishing agent to extinguish the out-of-control battery cell based on the control of the fire protection management module 1 when the energy storage cabin is powered on, and the second fire detection pipeline 3 is pre-filled with the fire extinguishing agent, which can extinguish the battery cell that accidentally runs out of control when the energy storage cabin is powered off. The two sets of fire detection pipelines respectively perform emergency treatment for different working conditions of the energy storage cabin, effectively increasing the reliability of the entire fire protection system; the fire detection pipeline directly extends to the inside of each battery pack, and even the first fire detection pipeline 2 is directly fitted with the explosion-proof valve of the battery cell in the battery pack, which can quickly detect potential fire risks when the temperature of the battery cell rises abnormally, and release the fire extinguishing agent at the same time as the explosion-proof valve explodes, thereby achieving rapid response and timely control of the initial fire; the fire detection pipeline can effectively prevent thermal runaway from spreading to adjacent battery cells or other components by individually monitoring and immediately intervening in the battery cells in the battery pack, thereby limiting the impact of the accident to a minimum range, reducing the overall degree of loss, and achieving battery cell-level fire protection.

[0050] Specifically, in the above embodiment, a reserved hole is opened on the battery pack, and the battery cells in the battery pack lose control and emit heat through the reserved hole; the second fire detection pipeline 3 extends into each battery pack in turn and is fitted at the reserved hole in the battery pack.

[0051] In this embodiment, the second fire detection pipeline 3 is directly attached to the reserved hole. Once the battery cell loses control, causing heat to erupt and melt the second fire detection pipeline 3, the fire extinguishing agent can immediately act directly on the heat source from the nearest position, thereby achieving efficient and accurate fire extinguishing, suppressing the development of the fire more quickly, and effectively shortening the time interval from detection to controlling the fire; at the same time, when the battery cell suffers from thermal runaway, heat can be quickly released through the reserved hole, which helps to reduce the local temperature, slow down the spread of thermal runaway, and buy precious time for the fire extinguishing agent to take effect; the presence of the reserved hole also allows the gas and heat generated inside to be discharged in time, reducing the pressure accumulation inside the battery pack and reducing the risk of explosion due to excessive pressure.

[0052] Specifically, in the above embodiment, a fire extinguishing agent storage tank 4 is also provided in the energy storage cabinet, and a fire extinguishing agent is stored in the fire extinguishing agent storage tank 4, and the fire extinguishing agent is perfluorohexanone liquid; the fire management module 1 is connected to the fire extinguishing agent storage tank 4, and the fire extinguishing agent storage tank 4 is also connected to the first fire detection pipeline 2 and the second fire detection pipeline 3 respectively; the fire management module 1 controls the fire extinguishing agent storage tank 4 to fill the second fire detection pipeline 3 with fire extinguishing agent, and after the fire management module 1 detects that the temperature in the battery compartment has risen, it controls the fire extinguishing agent storage tank 4 to fill the first fire detection pipeline 2 with fire extinguishing agent.

[0053] In the present embodiment, perfluorohexanone is a colorless, transparent, insulating liquid with good environmental protection properties and no destructive effect on the ozone layer. As a highly efficient clean fire extinguishing agent, perfluorohexanone can quickly suppress flames at low concentrations without causing damage to electronic equipment. It is particularly suitable for extinguishing battery fires and can quickly and effectively intervene to prevent the spread of thermal runaway. The fire management module 1 is used to realize intelligent control of the fire extinguishing agent storage tank 4, and can automatically determine whether it is necessary to start the fire fighting system for fire fighting according to the detection of the temperature in the battery compartment, which greatly improves the response speed and accuracy of fire fighting and reduces the possibility of human operation errors. ; The fire management module 1 simultaneously utilizes the first fire detection pipeline 2 and the second fire detection pipeline 3 to provide two layers of fire protection. Under normal circumstances, the second fire detection pipeline 3 can be pre-filled with fire extinguishing agent to extinguish the fire in the energy storage compartment in a power-off state, while the first fire detection pipeline 2 needs to be filled with fire extinguishing agent under the control of the fire management module 1 to extinguish the battery cell in time and meet the fire extinguishing preparation for the energy storage compartment under different working conditions; the fire extinguishing agent is centrally stored in a fire extinguishing agent storage tank 4 and transported to various key points in the battery pack through two fire detection pipelines, which simplifies the complexity of the system, facilitates maintenance and management, and also ensures the reliability of the fire extinguishing agent supply.

[0054] Furthermore, the fire extinguishing agent storage tank 4 includes a storage cylinder, a container valve, a siphon, a signal feedback device and a pressure gauge; the storage cylinder is used to store the fire extinguishing agent, the container valve is arranged at the outlet of the storage cylinder, one end of the siphon extends into the storage cylinder and is located below the liquid level of the fire extinguishing agent in the storage cylinder, and the other end of the siphon is connected to the container valve, and the container valve is respectively connected to the first fire detection pipeline 2 and the second fire detection pipeline 3; the pressure gauge is arranged on the outer wall of the storage cylinder; the signal feedback device is respectively connected to the storage cylinder and the fire management module 1, for obtaining the working status information of the storage cylinder, and feeding back the working status information to the fire management module 1.

[0055] Among them, one end of the siphon tube extends below the liquid level of the fire extinguishing agent to ensure that the liquid can be effectively transported out even when the amount of fire extinguishing agent is reduced, avoiding gas from entering the pipeline and affecting the spraying effect; the signal feedback device can monitor the working status of the storage cylinder in real time, and transmit the working status information to the fire management module 1, which is helpful to realize intelligent monitoring of the entire fire protection system and ensure that the system is in the best working state; the pressure gauge can intuitively display the pressure in the storage cylinder, which is convenient for daily inspection and maintenance personnel to understand the status of the fire extinguishing agent and replenish or adjust it in time.

[0056] In this embodiment, by providing a container valve and a siphon tube, a stable output of the fire extinguishing agent can be ensured, and consistent performance can be maintained even under different environmental conditions. The connection between the signal feedback device and the fire management module 1 enables the system to have self-diagnosis capabilities and to issue an alarm when an abnormality occurs, thereby improving the reliability of the system; the provision of a pressure gauge simplifies the operation of maintenance personnel and facilitates direct reading of data for maintenance work; the working status information provided by the signal feedback device can help maintenance personnel accurately determine when maintenance or replacement of parts is required, thereby reducing maintenance costs and downtime; based on the specific structure of the fire extinguishing agent storage tank 4 provided in this application, through continuous monitoring and feedback, potential problems such as insufficient fire extinguishing agent or abnormal pressure can be discovered early, so that preventive measures can be taken to prevent safety accidents caused by insufficient supply of fire extinguishing agent. At the same time, the system can use fire extinguishing agent only when it is actually needed, avoiding unnecessary waste and improving resource utilization efficiency.

[0057] Furthermore, an electromagnetic coil is provided on the top of the fire extinguishing agent storage tank 4, and the electromagnetic coil is electrically connected to the fire management module 1; when the fire management module 1 sends an electrical signal to the electromagnetic coil for indicating the filling of the fire extinguishing agent, the electromagnetic coil is energized to open the outlet channel of the fire extinguishing agent storage tank 4, and the fire extinguishing agent in the fire extinguishing agent storage tank 4 is filled into the first fire detection pipeline 2 or the second fire detection pipeline 3 by using the internal pressure.

[0058] In this embodiment, the electromagnetic coil is quickly attracted after receiving the electrical signal, and the exit channel is opened almost instantaneously, ensuring that the fire extinguishing agent can be released immediately. In an emergency, it has a faster response speed than traditional mechanical switches or manual operations; the fire management module 1 can decide when to start the electromagnetic coil according to preset conditions and logic, so as to achieve precise control of the release of the fire extinguishing agent and avoid unnecessary misoperation; at the same time, since the electromagnetic coil is electrically connected to the fire management module 1, it can be remotely controlled by electronic signals. Even if it is far away from the scene, the fire extinguishing system can be started by other communication means, which improves the flexibility, availability and high degree of automation of the system; and the electromagnetic coil usually has high reliability and long service life, ensuring that the system can work more stably.

[0059] Specifically, in the above embodiment, the energy storage compartment also includes an electrical compartment, which is characterized in that the system also includes an aerosol fire extinguishing device 6, which is arranged on the top of the electrical compartment, and the fire management module 1 is connected to the aerosol fire extinguishing device 6; the aerosol fire extinguishing device 6 is used to spray based on the control of the fire management module 1 when the temperature in the electrical compartment reaches a preset safety temperature, so as to extinguish the fire in the electrical compartment.

[0060] Among them, when an initial fire occurs in the electrical compartment, after the aerosol fire extinguishing device 6 receives an electric start signal or an open flame ignites the thermistor, the electric initiator or thermistor burns to activate the aerosol generator in the aerosol fire extinguishing device 6 to spray the entire electrical compartment. The heat released by the oxidation-reduction reaction of the aerosol generator decomposes the chemical coolant, so that the aerosol generator and the coolant jointly participate in the fire extinguishing. On the one hand, the cooling effect of the endothermic decomposition, and on the other hand, the chemical inhibition of the gas phase and the solid phase, work in coordination with each other.

[0061] In this embodiment, the aerosol fire extinguishing device 6 can be quickly activated when the fire management module 1 detects that the temperature in the electrical compartment has reached a preset safety temperature, thereby achieving a rapid response. The fire extinguishing agent in the aerosol fire extinguishing device 6 can quickly spread and cover the entire electrical compartment space, thereby effectively suppressing the fire in the early stage of the fire. Among them, the aerosol fire extinguishing agent has a high efficiency in fire extinguishing performance, which can interrupt the combustion chain through chemical reactions, and at the same time reduce the ambient temperature and oxygen concentration, thereby effectively extinguishing electrical fires. It has a good fire extinguishing effect not only for solid matter, liquid and gas fires, but also for electrical fires, that is, it can effectively protect precision electronic equipment; compared with traditional fire extinguishing agents, aerosol fire extinguishing agents will not leave a large amount of harmful residues, reducing secondary damage to electrical equipment; aerosol fire extinguishing agents are also particularly suitable for relatively closed spaces such as electrical compartments, forming a high concentration of fire extinguishing agents in a limited space to ensure comprehensive coverage of all potential fire sources; the aerosol fire extinguishing agent is connected to the fire management module 1 to achieve automatic monitoring and startup, which improves the response speed of the system, reduces the need for human intervention, and reduces the risk of misoperation.

[0062] Specifically, in the above embodiment, Figure 3 As shown, the system also includes a water sprinkler fire-fighting pipeline; the water inlet of the water sprinkler fire-fighting pipeline is arranged at the bottom of the energy storage cabinet, and the water inlet is reserved with a movable joint, the movable joint is used to connect the external water inlet pipeline, and the external water inlet pipeline injects water into the water sprinkler fire-fighting pipeline; the water outlet of the water sprinkler fire-fighting pipeline is connected to a fire sprinkler nozzle, and the fire sprinkler nozzle is arranged on the top of the battery compartment; when the battery cell is out of control, the fire sprinkler nozzle sprays the battery compartment to extinguish the fire.

[0063] In this embodiment, the fire sprinkler nozzle is arranged on the top of the battery compartment, which can achieve full coverage of the entire battery compartment area. Even in the case of a complex layout, water can be effectively and evenly distributed to all potential fire points. That is, when the battery cells in the battery compartment are out of control, the fire sprinkler nozzle sprays water to the top of the battery compartment, which can quickly reduce the ambient temperature and suppress the spread of fire; the water spray fire protection pipeline is combined with the fire detection pipeline in the battery compartment, and cooperates with the aerosol fire extinguishing device 6 in the electrical compartment, which provides a wealth of fire extinguishing means. The combined use of multiple fire extinguishing methods can cope with different types of Fire situation, enhancing the overall fire extinguishing capability of the system; the water inlet of the water sprinkler fire-fighting pipeline is set at the bottom of the energy storage cabinet, and a movable joint is reserved for quick connection with the external water inlet pipeline. A large amount of water can be quickly introduced when needed to improve the fire extinguishing efficiency; a heat-sensitive element is set in the fire sprinkler nozzle, usually an expansion tank, a glass ball or a bimetallic strip, which will break or deform when a specific temperature is reached in the battery compartment, thereby starting water spraying. No human intervention is required. Fire can be extinguished directly when a specific temperature is reached, usually 68°-70°, which effectively improves the response speed and reliability.

[0064] Specifically, in the above embodiment, a composite detection alarm 5 is arranged in the battery compartment, and the composite detection alarm 5 is connected to the fire management module 1, and the composite detection alarm 5 includes a detection unit and an alarm unit; the detection unit includes a smoke detection sensor, a carbon monoxide gas detection sensor, a hydrogen detection sensor, a temperature monitoring sensor and a battery liquid leakage gas detection sensor, and the detection unit is used to detect the environmental information in the battery compartment and send the environmental information to the fire management module 1; the alarm unit is based on the control of the fire management module 1, and alarms when the fire management module 1 controls the first fire detection pipeline 2 to perform a fire extinguishing action.

[0065] In this embodiment, the detection unit includes a plurality of different types of detection sensors, which are used to detect smoke, carbon monoxide gas, hydrogen, temperature and battery fluid leakage gas in the battery compartment, so as to provide timely warning for early fire. By integrating various types of sensors, the composite detection alarm 5 can comprehensively monitor the environment in the battery compartment, so as to identify various potential risk factors earlier, thereby improving the overall safety of the system. In addition, the composite detection alarm 5 integrates a variety of sensors, which can reduce the possibility of false alarms from a single sensor through cross-validation and improve the accuracy of the alarm. The composite detection alarm 5 sends the environmental information to the fire management module 1. Once an abnormal situation is detected, the fire management module 1 can make a more accurate judgment based on the comprehensive data provided by the composite detection alarm 5, such as distinguishing different types of fires, i.e. electrical fires or chemical fires, etc., and select the most appropriate fire extinguishing strategy, and then quickly initiate corresponding fire extinguishing measures, such as controlling the first fire detection pipeline 2 to perform fire extinguishing actions, thereby achieving rapid response.

[0066] Specifically, in the above embodiment, the system also includes a master management module and multiple slave management modules, and the number of slave management modules is equal to the number of battery packs; the slave management modules are arranged in a one-to-one correspondence with the battery packs, and are used to collect temperature data of the battery packs; the master management module is communicated with each slave management module respectively, and is used to receive the temperature data of each battery pack, and send the temperature data to the fire management module 1 at the same time; when the master management module detects that the temperature data of any battery pack exceeds the safety threshold, the master management module cuts off the relay switch of the energy storage cabin to stop the energy storage cabin from supplying power.

[0067] In this embodiment, by equipping each battery pack with a slave control management module, the temperature of each battery pack can be monitored independently and in real time, which helps to detect abnormal conditions of a single battery pack earlier without waiting for the average temperature of the entire battery compartment to rise to a dangerous level; the master control management module can quickly collect and analyze the data of all slave control management modules. Once the temperature of any battery pack is detected to exceed the safety threshold, the system can immediately take action to cut off the power supply, thereby preventing the thermal runaway from spreading further; cutting off the relay switch to stop the power supply can prevent the battery pack from continuing to charge or discharge in the early stage of thermal runaway, reducing the risk of fire. This is an important measure to prevent the spread of fire; the master control management module, as a central node, uniformly receives and processes the data of all slave control management modules, which is convenient for centralized management and data analysis, and facilitates the operation and maintenance personnel to better understand the operating status of the entire system and adjust the maintenance strategy in time; the distributed design of the slave control management module ensures that even if a slave control management module fails, it will not affect the operation of the entire system. At the same time, the master control management module can make decisions through redundant design or data from other slave control management modules, thereby improving the overall reliability of the system.

[0068] Specifically, in the above embodiment, when the fire management module 1 controls the first fire detection pipeline 2 to perform a fire extinguishing action, the fire management module 1 simultaneously disconnects the circuit breakers on the AC and DC sides of the energy storage cabin, and cuts off the power supply of the energy storage cabin to stop the energy storage cabin from working.

[0069] In this embodiment, the energy storage cabinet is specifically configured with a LEMS (Local Energy Management System) energy management system, and the fire management module 1 is the fire management center in the LEMS energy management system. Based on the structural arrangement in the battery compartment in this application, it is equipped with a composite detection alarm 5 and a corresponding slave control management module in each battery pack to collect environmental data in the battery compartment and the temperature of the battery pack. When the environmental data in the battery compartment and the temperature of the battery pack exceed the boundary conditions set by the fire management module 1, the fire management module 1 sends an electrical signal to the electromagnetic coil on the top of the fire extinguishing agent storage tank 4, the electromagnetic coil is energized, the outlet channel of the fire extinguishing agent storage tank 4 is opened, and the fire extinguishing agent is discharged through the internal pressure. The fire extinguishing agent is pre-filled into the fire detection pipeline. When the temperature of the battery cell in the battery pack continues to rise or the battery cell is out of control, the released high-temperature gas instantly melts the fire detection pipeline, and the fire extinguishing agent is directly aimed at the battery cell to extinguish, contain or extinguish the fire. At the same time, the electrical compartment is equipped with an aerosol fire extinguishing device 6. When the fire management module 1 controls the set boundary conditions, the start signal aerosol generator is triggered to spray the entire electrical compartment to extinguish and contain the fire in the electrical compartment. When the above fire status occurs, the fire management module 1 in the LEMS energy management system controls the internal logical connection, promptly disconnects the circuit breakers on the AC and DC sides, cuts off the relevant power supply, and stops the energy storage compartment from running immediately.

[0070] The multiple fire-fighting systems of the energy storage cabin provided in the present application have rigorous control logic, and the multiple fire-fighting systems are closely linked and coordinated with each other to effectively prevent and curb the occurrence of fires. Fire-fighting actions are carried out in a timely manner when and after a fire occurs in the battery cabin, and fire-fighting measures are linked through multiple means to prevent fire accidents from causing the expansion of personal safety accidents and property losses. The multiple fire-fighting systems of the energy storage cabin include a first fire detection pipeline 2, a second fire detection pipeline 3, a prefabricated fire extinguishing agent storage tank 4, an aerosol fire extinguishing device 6, a water sprinkler fire-fighting pipeline, a composite detection alarm 5, a main control management module, multiple slave control management modules and LEMS energy management system control, which fully meet the timeliness, reliability and rapid response requirements of the multiple fire-fighting system control of the modular energy storage cabin. At the same time, the logical control methods are designed to cooperate with each other, with no blind spots in protection, monitoring and action are implemented, and the basic concept of prevention first and combination of prevention and fire fighting is implemented.

[0071] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multiple fire protection system of an energy storage cabin, wherein the energy storage cabin is arranged in an energy storage cabinet, the energy storage cabin comprises a battery cabin, and a plurality of battery packs are placed in the battery cabin, characterized in that: The system comprises a fire management module (1), a first fire detection pipeline (2) and a second fire detection pipeline (3); The fire management module (1) is arranged in the energy storage cabinet and is respectively connected to the first fire detection pipeline (2) and the second fire detection pipeline (3); the second fire detection pipeline (3) is filled with a fire extinguishing agent; The first fire detection pipeline (2) and the second fire detection pipeline (3) are sequentially inserted into each of the battery packs, and the first fire detection pipeline (2) is arranged in close contact with the explosion-proof valve of each battery cell in the battery pack; When the energy storage compartment is powered on and running, when the fire management module (1) detects that the temperature in the battery compartment is rising, a fire extinguishing agent is filled into the first fire detection pipeline (2), so that the first fire detection pipeline (2) is melted after the battery cell is out of control and the explosion-proof valve explodes, and the fire extinguishing agent is used to extinguish the fire in the battery cell; When the energy storage compartment is powered off, the heat generated by the uncontrolled eruption of the battery cells in the battery pack melts the second fire detection pipeline (3), so that the fire in the battery pack can be extinguished using a fire extinguishing agent.

2. The multiple fire protection system of the energy storage cabin according to claim 1 is characterized in that: The battery pack is provided with a reserved hole, and the battery cells in the battery pack are out of control and emit heat through the reserved hole; The second fire detection pipeline (3) extends into each of the battery packs in turn and is arranged in a close fit at a reserved hole in the battery pack.

3. The multiple fire protection system of the energy storage cabin according to claim 1 is characterized in that: The energy storage cabinet is also provided with a fire extinguishing agent storage tank (4), wherein the fire extinguishing agent storage tank (4) stores a fire extinguishing agent, wherein the fire extinguishing agent is a perfluorohexanone liquid; The fire management module (1) is connected to the fire extinguishing agent storage tank (4), and the fire extinguishing agent storage tank (4) is also connected to the first fire detection pipeline (2) and the second fire detection pipeline (3) respectively; The fire management module (1) controls the fire extinguishing agent storage tank (4) to fill the second fire detection pipeline (3) with fire extinguishing agent, and after the fire management module (1) detects that the temperature in the battery compartment has risen, controls the fire extinguishing agent storage tank (4) to fill the first fire detection pipeline (2) with fire extinguishing agent.

4. The multiple fire protection system of the energy storage cabin according to claim 3 is characterized in that: The fire extinguishing agent storage tank (4) comprises a storage cylinder, a container valve, a siphon, a signal feedback device and a pressure gauge; The storage cylinder is used to store fire extinguishing agent, the container valve is arranged at the outlet of the storage cylinder, one end of the siphon tube extends into the storage cylinder and is located below the liquid level of the fire extinguishing agent in the storage cylinder, the other end of the siphon tube is connected to the container valve, and the container valve is respectively connected to the first fire detection pipeline (2) and the second fire detection pipeline (3); The pressure gauge is arranged on the outer wall of the storage cylinder; The signal feedback device is connected to the storage cylinder and the fire management module (1) respectively, and is used to obtain the working status information of the storage cylinder and feed back the working status information to the fire management module (1).

5. The multiple fire protection system of the energy storage cabin according to claim 3 or 4, characterized in that: An electromagnetic coil is arranged on the top of the fire extinguishing agent storage tank (4), and the electromagnetic coil is electrically connected to the fire management module (1); When the fire management module (1) sends an electrical signal to the electromagnetic coil for indicating the filling of the fire extinguishing agent, the electromagnetic coil is energized to open the outlet passage of the fire extinguishing agent storage tank (4), and the fire extinguishing agent in the fire extinguishing agent storage tank (4) is filled into the first fire detection pipeline (2) or the second fire detection pipeline (3) by utilizing the internal pressure.

6. The multiple fire protection system of the energy storage cabin according to claim 1, wherein the energy storage cabin further comprises an electrical cabin, characterized in that: The system further comprises an aerosol fire extinguishing device (6), wherein the aerosol fire extinguishing device (6) is arranged on the top of the electrical cabin, and the fire management module (1) is connected to the aerosol fire extinguishing device (6); The aerosol fire extinguishing device (6) is used to spray based on the control of the fire management module (1) when the temperature in the electrical compartment reaches a preset safety temperature, so as to extinguish the fire in the electrical compartment.

7. The multiple fire protection system of the energy storage cabin according to claim 1 is characterized in that: The system also includes a water sprinkler fire protection pipeline; The water inlet of the water sprinkler fire-fighting pipeline is arranged at the bottom of the energy storage cabinet, and a movable joint is reserved at the water inlet, and the movable joint is used to connect an external water inlet pipeline, and the external water inlet pipeline injects water into the water sprinkler fire-fighting pipeline; The water outlet of the water sprinkler fire-fighting pipeline is connected to a fire sprinkler nozzle, and the fire sprinkler nozzle is arranged on the top of the battery compartment; When the battery cell is out of control, the fire sprinkler head sprays the battery compartment to extinguish the fire.

8. The multiple fire protection system of the energy storage cabin according to claim 1 is characterized in that: A composite detection alarm (5) is arranged in the battery compartment, the composite detection alarm (5) is connected to the fire management module (1), and the composite detection alarm (5) comprises a detection unit and an alarm unit; The detection unit comprises a smoke detection sensor, a carbon monoxide gas detection sensor, a hydrogen gas detection sensor, a temperature monitoring sensor and a battery liquid leakage gas detection sensor, and the detection unit is used to detect environmental information in the battery compartment and send the environmental information to the fire management module (1); The alarm unit is based on the control of the fire management module (1) and issues an alarm when the fire management module (1) controls the first fire detection pipeline (2) to perform a fire extinguishing action.

9. The multiple fire protection system of the energy storage cabin according to claim 1, characterized in that: The system further comprises a master control management module and a plurality of slave control management modules, wherein the number of the slave control management modules is equal to the number of the battery packs; The slave control management module is set in one-to-one correspondence with the battery pack and is used to collect temperature data of the battery pack; The master control management module is respectively connected to each of the slave control management modules for receiving temperature data of each of the battery packs and sending the temperature data to the fire protection management module (1); When the main control management module detects that the temperature data of any of the battery packs exceeds a safety threshold, the main control management module cuts off the relay switch of the energy storage compartment to stop the energy storage compartment from supplying power.

10. The multiple fire protection system of the energy storage cabin according to claim 1, characterized in that: When the fire management module (1) controls the first fire detection pipeline (2) to perform a fire extinguishing action, the fire management module (1) simultaneously disconnects the circuit breakers on the AC side and the DC side of the energy storage compartment, and cuts off the power supply of the energy storage compartment, so that the energy storage compartment stops working.

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