Fire control method of energy storage system and energy storage system

Abstract

The invention provides a fire-fighting control method of an energy storage system and the energy storage system. The energy storage system is divided into multiple levels of fire-fighting control areas according to the levels of a battery system; fire feature information corresponding to each fire control area is obtained, and corresponding fire control instructions are sent to fire control devices in the multiple levels of fire control areas based on the fire feature information; the fire-fighting devices in the multi-level fire-fighting control areas are controlled to perform fire extinguishing according to the corresponding fire-fighting instructions, fire-fighting control protection can be performed on the multi-level fire-fighting control areas, the fire-fighting control accuracy of the energy storage system is ensured, and the fire-fighting safety of the energy storage system is improved.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a fire control method of an energy storage system and an energy storage system. Background Art

[0002] With the development of smart grid construction, the demand for battery energy storage continues to increase. Energy storage systems are widely used. Due to the limitations of energy density and space, energy storage systems are generally arranged relatively closely, and there is no staff to monitor the working status of the energy storage system in real time, which is easy to cause fire and explosion accidents. Therefore, providing an energy storage system with fire control function is of great significance to ensure the safe operation of the energy storage system.

[0003] In the related art, the fire control strategy of the energy storage system is usually to use a spray cooling fire extinguishing method to carry out fire control when thermal runaway is detected in the battery compartment. The fire control is targeted at a single level, and it is difficult to ensure the accuracy of the fire control of the energy storage system. Summary of the invention

[0004] The embodiments of the present invention provide a fire control method and an energy storage system for an energy storage system, which can perform fire control protection on multi-level fire control areas, ensure the accuracy of fire control of the energy storage system, and improve the fire safety of the energy storage system.

[0005] In a first aspect, an embodiment of the present invention provides a fire control method for an energy storage system, the fire control method for the energy storage system comprising:

[0006] Dividing the energy storage system into multiple levels of fire control zones according to the battery system level;

[0007] Obtaining fire characteristic information corresponding to each of the fire control areas, and sending corresponding fire instructions to fire-fighting devices in multiple levels of fire control areas based on the fire characteristic information;

[0008] Control the fire-fighting devices in the fire control areas at multiple levels to execute fire-fighting according to corresponding fire-fighting instructions.

[0009] In a second aspect, an embodiment of the present invention provides an energy storage system, a battery compartment, the battery compartment comprising a plurality of battery clusters, each battery cluster comprising a plurality of battery packs;

[0010] A fire control system, the fire control system comprising a fire detection device, a fire fighting device and a controller, the controller being communicatively connected to a battery management system of the battery pack;

[0011] The controller is used to execute the method as described in the first aspect.

[0012] In a third aspect, an embodiment of the present invention provides a fire control device for the energy storage system, the fire control device for the energy storage system comprising:

[0013] A division module, used to divide the energy storage system into multiple levels of fire control areas according to the battery system level;

[0014] A sending module, used to obtain fire characteristic information corresponding to each of the fire control areas, and send corresponding fire instructions to fire fighting devices in multiple levels of fire control areas based on the fire characteristic information;

[0015] The control module is used to control the fire-fighting devices in the fire control areas of multiple levels to execute fire-fighting according to the corresponding fire-fighting instructions.

[0016] In a fourth aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps in the fire control method of the above-mentioned energy storage system are implemented.

[0017] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in the fire control method of the above-mentioned energy storage system are implemented.

[0018] In a sixth aspect, an embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, is used to execute the steps in the fire control method of the above-mentioned energy storage system.

[0019] Beneficial effects of the embodiments of the present invention:

[0020] In an embodiment of the present invention, by performing multi-level fire control on the energy storage system, fire control protection can be performed on multi-level (battery pack level, battery cluster level, battery compartment level) fire control areas, ensuring the accuracy of fire control of the energy storage system and improving the fire safety of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic flow chart of an embodiment of a fire control method for an energy storage system provided in an embodiment of the present application;

[0023] Figure 2 is a top view of a packet-level detection device and a fire-fighting device in an energy storage system provided in an embodiment of the present application;

[0024] Figure 3 It is a front view of a cabin-level detection device and a fire-fighting device in an energy storage system provided in an embodiment of the present application;

[0025] Figure 4 is a top view of a cabin-level detection device and a fire-fighting device in an energy storage system provided in an embodiment of the present application;

[0026] Figure 5 is a top view of a cluster-level detection device and a fire-fighting device in an energy storage system provided in an embodiment of the present application;

[0027] Figure 6 is a flow chart of the fire control process of the energy storage system provided in an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of the structure of the energy storage system provided in the embodiment of the present application;

[0029] Figure 8 It is a schematic diagram of the structure of an embodiment of a fire control device of an energy storage system provided in an embodiment of the present application;

[0030] Fig. 9 It is a schematic diagram of the structure of an embodiment of an electronic device provided in the embodiments of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

[0032] Energy storage safety is a key link in energy storage systems. As a new type of energy storage hotspot, sodium-ion batteries are equipped with sodium-ion energy storage systems with fire control functions to ensure the stable and safe operation of sodium-ion energy storage systems, which will help further promote sodium-ion energy storage technology. At present, fire control systems used for electrochemical energy storage are generally designed based on lithium-ion battery systems, and there is no mature fire control system solution specifically adapted to sodium-ion battery systems; sodium-ion batteries differ from lithium-ion batteries in terms of material thermal stability and thermal runaway characteristics, and completely copying the fire protection solution of lithium-ion battery systems is not the optimal solution. For example, when thermal runaway is detected in the battery compartment, a spray cooling fire extinguishing method is used for fire control. The fire control is targeted at a single level, and it is difficult to ensure the accuracy of the fire control of the energy storage system.

[0033] In view of this, the present application proposes a fire control method for an energy storage system to perform fire control protection on multi-level fire control areas, ensure the accuracy of fire control of the energy storage system, and improve the fire safety of the energy storage system.

[0034] like Figure 1 As shown, Figure 1 FIG. 1 is a flow chart of an embodiment of a fire control method for an energy storage system in an embodiment of the present application. The fire control method for an energy storage system includes:

[0035] S101. Divide the energy storage system into multiple levels of fire control areas according to the battery system level.

[0036] The battery system level includes the battery pack level, the battery cluster level and the battery compartment level. The battery type may be a lithium-ion battery, a lead-acid battery, a nickel-cadmium battery, or a sodium-ion battery.

[0037] Specifically, the energy storage system can be divided into multiple levels of fire control areas according to the three levels in the battery system hierarchy.

[0038] S102: Obtain fire characteristic information corresponding to each fire control area, and send corresponding fire instructions to fire-fighting devices in fire control areas of multiple levels based on the fire characteristic information.

[0039] The fire characteristic information is information or signals that characterize the fire condition in the corresponding fire control area. Data related to thermal runaway in each fire control area, such as temperature and gas concentration, can be collected by different types of detectors, composite detectors, or battery management systems.

[0040] Among them, each level is equipped with corresponding fire-fighting devices. Exemplarily, the fire-fighting devices at the battery pack level may include a battery pack level fire extinguishing module and a battery pack level alarm module, and the battery pack level fire extinguishing module may include a battery pack level pressure relief unit and a battery pack level fire extinguishing unit. The battery pack level alarm module is a module for sending an alarm signal, for example, it may be a combination of a voice alarm, an audible and visual alarm, and an alarm bell alarm. The battery pack level fire extinguishing module is a module for extinguishing a fire on a battery pack, including a battery pack level fire extinguishing unit and a battery pack level pressure relief unit. The battery pack level fire extinguishing unit may be a gas fire extinguishing device. The gas fire extinguishing device may be fixed to the maintenance window of the energy storage system. The gas fire extinguishing device may be an aerosol or perfluorohexanone fire extinguishing agent, a non-pressure storage method, and may be triggered by hot start or electric start. The battery pack level pressure relief unit may be an electrically controlled safety valve, which may be arranged on the battery pack housing. The pressure relief unit is used to discharge the gas inside the battery pack to achieve pressure relief and reduce the concentration of thermal runaway gas.

[0041] For the battery cluster-level fire-fighting device, it can include a battery cluster-level fire-extinguishing module and a battery cluster-level alarm module. The battery cluster-level fire-extinguishing module can include a battery cluster-level pressure relief unit and a battery cluster-level fire-extinguishing unit. The battery cluster-level alarm module can be the same as the battery pack-level alarm module, which will not be repeated here. The battery cluster-level fire-extinguishing module is a module used to extinguish a fire in a battery cluster, including a battery cluster-level fire-extinguishing unit and a battery cluster-level pressure relief unit. The battery cluster-level fire-extinguishing unit can be a gas fire-extinguishing device.

[0042] For the fire-fighting device at the battery compartment level, it can include a battery compartment level fire extinguishing module and a battery compartment level alarm module. The battery compartment level fire extinguishing module can include a water sprinkler pipe network system and an explosion-proof module.

[0043] Specifically, for the fire characteristic information corresponding to each fire control area, the fire characteristic information is then analyzed to determine the fire analysis results of each fire control area, and the fire control strategy of each fire control area is determined according to the fire analysis results of each fire control area, and then the corresponding fire instructions are determined, and the corresponding fire instructions are sent to the fire fighting devices of each fire control area. It can be understood that in this embodiment, for each fire control area, the fire instructions of the corresponding fire fighting devices are determined according to the respective fire characteristic information to achieve multi-level fire fighting control.

[0044] S103, controlling the fire-fighting devices in the fire control areas at multiple levels to execute fire-fighting according to corresponding fire-fighting instructions.

[0045] Specifically, the fire-fighting devices in the fire control areas at multiple levels are controlled to execute fire extinguishing according to the corresponding fire-fighting instructions, thus realizing the fire control and protection of the fire control areas at each level. It can be understood that since the energy storage system is subjected to multi-level fire control, the fire control and protection of the multi-level fire control areas can be carried out, thus ensuring the accuracy of the fire control of the energy storage system and improving the fire safety of the energy storage system.

[0046] The fire control method of the energy storage system divides the energy storage system into multiple levels of fire control areas according to the battery system level; obtains the fire characteristic information corresponding to each fire control area, and sends corresponding fire instructions to the fire-fighting devices in the multiple levels of fire control areas based on the fire characteristic information; controls the fire-fighting devices in the multiple levels of fire control areas to execute fire extinguishing according to the corresponding fire instructions, so as to perform fire control protection for the multi-level fire control areas, ensure the accuracy of the fire control of the energy storage system, and improve the fire safety of the energy storage system.

[0047] In some embodiments, the fire control zone includes a cabin-level fire control zone corresponding to the space where the battery compartment in the battery system is located, and / or a cluster-level fire control zone corresponding to the space where each battery cluster in the battery compartment is located, and / or a pack-level fire control zone corresponding to the space where each battery pack in the battery cluster is located, and the fire characteristic information corresponding to each of the fire control zones is obtained, including: monitoring at least one of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, and battery pack expansion force in the pack-level fire control zone through a pack-level detection device in the energy storage system, and the current status information of the battery pack monitored by the battery management system of the battery pack. information, and obtain the fire characteristic information corresponding to the package-level fire control area; and / or, monitor at least one of the battery compartment temperature, battery compartment combustible gas concentration, battery compartment smoke concentration, battery compartment fire image, battery compartment thermal image, and battery compartment air pressure in the compartment-level fire control area through the compartment-level detection device in the energy storage system, and obtain the fire characteristic information corresponding to the battery compartment fire control area; and / or, monitor at least one of the battery cluster temperature, battery cluster combustible gas concentration, battery cluster smoke concentration, battery cluster fire image, and battery cluster thermal image in the cluster-level fire control area through the cluster-level detection device in the energy storage system, and obtain the fire characteristic information corresponding to the cluster-level fire control area.

[0048] Among them, the pack-level detection device can be a combination of a battery management system and multiple detectors or composite detectors. The detectors can be temperature detectors, hydrogen detectors, carbon monoxide detectors, organic compound gas detectors, sound detectors, pressure detectors, etc. The corresponding fire characteristic information is at least one of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, battery pack expansion force, and the battery pack current status information. The battery pack current status information can be at least one of the current temperature, current voltage, current state of charge (SOC), and current state of health (SOH). Figure 2 The figure shows a top view of the packet-level detection device and the fire-fighting device in the energy storage system.

[0049] The pressure detector is used to detect the expansion force inside the battery pack. Since the battery cells in the battery pack will experience increased expansion force in the early stages of thermal runaway, the fire characteristic information of the battery pack can be detected at the first opportunity by setting up a pressure detector.

[0050] The sound detector is used to detect sounds of specific frequencies. Since the battery cells of the battery pack will open abnormally when thermal runaway occurs, the fire characteristic information of the battery pack can be detected at the first time by setting up a sound detector.

[0051] The cabin-level detection device can be a combination of multiple detectors or composite detectors, such as air pressure detectors, infrared detectors, hydrogen detectors, carbon monoxide detectors, organic compound gas detectors, visible light cameras and infrared cameras. The corresponding fire characteristic information is at least one of the battery cabin temperature, battery cabin flammable gas concentration, battery cabin smoke concentration, battery cabin fire image, battery cabin thermal image, and battery cabin air pressure, and the fire characteristic information corresponding to the battery cabin fire control area is obtained. Figure 3 As shown in the figure, it is the front view of the cabin level detection device and fire fighting device in the energy storage system. Figure 4 The figure shows a top view of the cabin-level detection device and the fire-fighting device in the energy storage system.

[0052] The difference between the cluster-level detection device and the cabin-level detection device is that the cluster-level detection device does not have an air pressure detector, and the other detectors can be the same. The corresponding fire characteristic information is at least one of the battery cluster temperature, battery cluster combustible gas concentration, battery cluster smoke concentration, battery cluster fire image, and battery cluster thermal image. Figure 5 The figure shows a top view of the cluster-level detection device and the fire-fighting device in the energy storage system.

[0053] It can be understood that in this embodiment, by obtaining multi-dimensional fire characteristic information at various levels, from the dimensions of sound, light, heat, force, electricity, gas, and image, it is helpful to ensure the comprehensive multi-dimensionality of the fire characteristic information, which is beneficial to the subsequent accurate analysis of the fire situation based on the comprehensive multi-dimensional fire characteristic information, and then to realize the fire protection strategy of early warning and early control, minimize the potential fire hazard risk in the early stage of abnormal signals, and ensure the safe operation of the energy storage system.

[0054] In some embodiments, the sending of corresponding firefighting instructions to firefighting devices in multiple levels of fire control areas based on the fire characteristic information includes: determining a battery pack fire condition based on the fire characteristic information corresponding to the pack-level fire control area, and generating a battery pack firefighting instruction based on the battery pack fire condition; obtaining a battery pack firefighting result in response to feedback of the battery pack firefighting instruction, and determining a battery cluster fire condition and / or a battery compartment fire condition based on the battery pack firefighting result and the fire characteristic information corresponding to the cluster-level fire control area or the compartment-level fire control area, and determining a fire extinguishing instruction based on the battery cluster fire condition and / or the battery compartment fire condition.

[0055] Among them, the battery pack fire condition is information used to characterize the fire situation in the pack-level fire control area. For example, the battery pack fire condition can be graded according to the severity of thermal runaway in the battery pack, and corresponding fire control measures can be adopted according to different grades.

[0056] The battery cluster fire condition is used to represent the fire condition in the cluster-level fire control area. Correspondingly, the battery compartment fire condition is used to represent the fire condition in the compartment-level fire control area. Both the battery cluster fire condition and the battery compartment fire condition can be classified, and corresponding fire control measures can be adopted according to different classifications.

[0057] Specifically, for the package-level fire control area, the fire characteristic information corresponding to the package-level fire control area is analyzed to determine the battery pack fire condition, and a battery pack fire fighting instruction is generated based on the battery pack fire condition, so that the generated battery pack fire fighting instruction matches the fire characteristic information, thereby improving the accuracy of the package-level fire control.

[0058] The fire extinguishing instructions for the battery cluster and / or battery compartment can be analyzed in combination with the battery pack fire fighting results fed back in response to the battery pack fire fighting instructions and the fire characteristic information corresponding to the cluster-level fire control area or the compartment-level fire control area, so as to determine the battery cluster fire condition and / or battery compartment fire condition, and generate fire fighting instructions for the battery cluster fire condition and / or battery compartment based on the battery cluster fire condition and / or battery compartment fire condition, so that the generated fire fighting instructions match the fire characteristic information, thereby improving the accuracy of cluster-level and / or compartment-level fire control.

[0059] In some embodiments, if any one of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force meets the corresponding thermal runaway condition, and the current status information is normal, the battery pack fire is determined to be a third-level battery pack fire, and the battery pack fire fighting instruction is determined to include a third-level warning instruction; if at least two of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force meet the corresponding thermal runaway conditions, and the current status information is normal, the battery pack fire is determined to be a second-level battery pack fire, and the battery pack fire fighting instruction is determined to include a second-level alarm instruction and a battery pack pressure relief instruction; if at least two of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force meet the corresponding thermal runaway conditions, and the current status information is abnormal, the battery pack fire is determined to be a first-level battery pack fire, and the battery pack fire fighting instruction is determined to include a first-level protection instruction and a battery pack fire extinguishing instruction.

[0060] Specifically, the fire control instructions for the battery pack are determined according to the fire characteristic information corresponding to the pack-level fire control area. The severity of the fire can be divided into three levels, and the specific division method is as follows:

[0061] If any one of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, and battery pack expansion force meets the corresponding thermal runaway conditions, and the current status information is normal, indicating that the thermal runaway phenomenon in the battery pack is slight at this time, the battery pack fire is determined to be a level 3 fire, and the battery pack fire fighting instruction includes a level 3 warning instruction to remind staff to be vigilant and no fire extinguishing measures are required.

[0062] If at least two of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, and battery pack expansion force meet the corresponding thermal runaway conditions, and the current status information is normal, indicating that the thermal runaway phenomenon in the battery pack is generally serious at this time, the battery pack fire is determined to be a secondary battery pack fire, and the battery pack fire fighting instruction is determined to include a secondary alarm instruction and a battery pack pressure relief instruction, thereby controlling the pressure relief unit to open, exhaust and pressure relieve the battery pack, reduce the gas concentration of the battery pack, and avoid fire.

[0063] If at least two of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, and battery pack expansion force meet the corresponding thermal runaway conditions, and the current status information is abnormal, indicating that the thermal runaway phenomenon in the battery pack is relatively serious at this time, the battery pack fire is determined to be a level one fire, and the battery pack fire fighting instruction is determined to include a level one protection instruction and a battery pack fire extinguishing instruction, thereby controlling the fire extinguishing unit to start the fire extinguishing, so as to implement fire extinguishing measures on the battery pack, avoid fire and explosion in the battery pack, and ensure the fire safety of the battery pack.

[0064] It can be understood that in this embodiment, the battery pack fire fighting instructions are determined based on the fire characteristic information corresponding to the pack-level fire control area, and the fire severity is divided into three levels, thereby realizing hierarchical control of the battery pack, improving the accuracy and rationality of fire control in the pack-level fire control area, and enhancing the fire control effect of the pack-level fire control area.

[0065] In some embodiments, the obtaining of the battery pack fire fighting result in response to the battery pack fire fighting instruction feedback, and determining the battery cluster fire condition and / or the battery compartment fire condition based on the battery pack fire fighting result and the fire characteristic information corresponding to the cluster-level fire fighting control area or the cabin-level fire fighting control area, and determining the fire extinguishing instruction based on the battery cluster fire condition and / or the battery compartment fire condition, includes: if the battery pack fire fighting result is that the fire has not spread to the cluster-level fire fighting control area or the cabin-level fire fighting control area, and any one of the fire characteristic information corresponding to the cluster-level fire fighting control area or the cabin-level fire fighting control area satisfies the corresponding thermal runaway condition, determining that the battery cluster fire condition and / or the battery compartment fire condition is a secondary fire, and determining the The fire fighting instruction includes a secondary alarm instruction and a battery compartment pressure relief instruction; if the fire fighting result of the battery pack is that the fire spreads to the cluster-level fire control area or the cabin-level fire control area, any one of the fire characteristic information corresponding to the cluster-level fire control area or the cabin-level fire control area meets the corresponding thermal runaway conditions, or if the fire fighting result of the battery pack is that the fire does not spread to the cluster-level fire control area or the cabin-level fire control area, any two of the fire characteristic information corresponding to the cluster-level fire control area and / or the cabin-level fire control area meet the corresponding thermal runaway conditions, it is determined that the battery cluster fire and / or the battery compartment fire is a primary fire, and it is determined that the fire fighting instruction includes a primary protection instruction and a fire extinguishing instruction.

[0066] Specifically, the fire control instructions for the battery pack are determined according to the fire characteristic information corresponding to the pack-level fire control area. The severity of the fire can be divided into two levels, and the specific division method is as follows:

[0067] If the battery pack fire fighting result is that the fire has not spread to the cluster-level fire control area or the cabin-level fire control area, and any one of the fire characteristic information corresponding to the cluster-level fire control area or the cabin-level fire control area meets the corresponding thermal runaway condition, it indicates that the thermal runaway phenomenon of the cluster-level fire control area or the cabin-level fire control area is relatively serious at this time, and the battery cluster fire and / or battery cabin fire is determined to be a secondary fire, and the fire fighting instruction is determined to include a secondary alarm instruction and a battery cabin pressure relief instruction, so as to achieve exhaust and pressure relief of the entire battery cabin, reduce the gas concentration in the battery cabin, and avoid fire.

[0068] If the fire fighting result of the battery pack is that the fire spreads to the cluster-level fire control area or the cabin-level fire control area, and any one of the fire characteristic information corresponding to the cluster-level fire control area or the cabin-level fire control area meets the corresponding thermal runaway condition, or if the fire fighting result of the battery pack is that the fire does not spread to the cluster-level fire control area or the cabin-level fire control area, and any two of the fire characteristic information corresponding to the cluster-level fire control area and / or the cabin-level fire control area meet the corresponding thermal runaway condition, it indicates that the thermal runaway phenomenon of the cluster-level fire control area or the cabin-level fire control area is very serious at this time, and the battery cluster fire and / or battery cabin fire is determined to be a first-level fire, and the fire fighting instruction is determined to include a first-level protection instruction and a fire extinguishing instruction. Thus, the fire extinguishing unit is controlled to start the fire extinguishing to implement fire extinguishing measures on the cluster-level fire control area and / or the cabin-level fire control area, to avoid fire and explosion in the cluster-level fire control area and the cabin-level fire control area, and to ensure the fire safety of the energy storage system.

[0069] It can be understood that in this embodiment, firefighting instructions are determined based on the fire characteristic information corresponding to the cluster-level fire control area and / or the cabin-level fire control area, and the fire severity is divided into two levels, thereby realizing hierarchical control of the cluster-level fire control area and the cabin-level fire control area, improving the accuracy and rationality of fire control in the cluster-level fire control area and the cabin-level fire control area, and enhancing the fire control effect of the cluster-level fire control area and the cabin-level fire control area.

[0070] In some embodiments, after determining that the firefighting instruction includes a primary protection instruction and a fire extinguishing instruction, it also includes: obtaining a first firefighting result in response to feedback of the primary protection instruction and the fire extinguishing instruction; and updating the firefighting instruction based on the first firefighting result.

[0071] The first firefighting result is the firefighting result after the measures corresponding to the first-level protection instruction and the fire extinguishing instruction are implemented, which is divided into two situations: the fire cannot be effectively controlled and the fire is effectively controlled. The first firefighting result can be determined by the method in the above embodiment.

[0072] Specifically, the fire instructions are updated based on the first fire results to achieve real-time and accurate fire control of the cluster-level fire control areas and cabin-level fire control areas to ensure fire safety.

[0073] In some embodiments, after determining that the firefighting instruction is a battery compartment water sprinkler fire extinguishing instruction, it also includes: obtaining a second firefighting result in response to feedback from the battery compartment water sprinkler fire extinguishing instruction; and updating the firefighting instruction based on the second firefighting result.

[0074] The second firefighting result is the firefighting result after the measures corresponding to the battery compartment water spray fire extinguishing instruction are implemented, which is divided into two situations: the fire cannot be effectively controlled and the fire is effectively controlled. The second firefighting result can be determined by the method in the above embodiment.

[0075] Specifically, the fire instructions are updated based on the second fire results to achieve real-time and accurate fire control of the cluster-level fire control area and the cabin-level fire control area to ensure fire safety.

[0076] In some embodiments, when the second fire fighting result is that the fire cannot be effectively controlled and it is detected that the air pressure in the battery compartment is greater than a preset air pressure threshold, the fire fighting instruction is determined to be a battery compartment explosion-proof instruction.

[0077] Specifically, when the second firefighting result is that the fire cannot be effectively controlled and the gas pressure in the battery compartment is detected to be greater than the preset gas pressure threshold, the firefighting instruction is confirmed to be a battery compartment explosion-proof instruction, and the corresponding fire-fighting method can be to open the explosion-proof panel in the cabin-level fire control area of ​​the energy storage system to release pressure and prevent the energy storage system from exploding. Prevent larger-scale hazards.

[0078] In a specific embodiment, Figure 6 The figure shows the flow chart of the fire control process of the energy storage system. The fire control process is as follows:

[0079] If a single abnormal signal appears in the battery pack-level detector, the third-level warning signal is triggered, and the BMS reminds the staff to be vigilant; at this time, the BMS self-checks the battery system status information (voltage, temperature, SOC, SOH, etc.). If there is no abnormality in the BMS self-check, the third-level warning signal state is maintained until the abnormal signal disappears. If any abnormal signal appears in the BMS self-check, the second-level alarm signal state is triggered, and the control module sends an alarm signal to remind personnel, and controls the opening of the battery pack electronically controlled safety valve to discharge the gas inside the battery pack to achieve the effect of pressure relief and reducing the concentration of thermal runaway gas. At this time, if any abnormal signal is added, the first-level protection signal is triggered, and the control module sends an alarm signal to remind personnel. At the same time, the sound and light alarm and alarm bell sound, the electric safety valve is closed, and the fire protection system executes the fire extinguishing action of the battery pack-level fire extinguishing device, releasing the pack-level fire extinguishing agent to extinguish the fire.

[0080] If a composite signal from the battery pack-level detector appears, a secondary alarm signal is triggered, and the control module sends an alarm signal to remind personnel. The battery pack's electronically controlled safety valve opens to exhaust and release pressure. If there is an abnormality in the BMS self-test at this time, a primary protection signal is triggered, and the control module sends an alarm signal to remind personnel. At the same time, the sound and light alarm and alarm bell sound, the electric safety valve closes, and fire extinguishing is executed at the battery pack level.

[0081] If the fire spreads to the cluster level or space level, the control module recognizes that the package-level protection has been activated. At this time, if any single abnormal signal is detected at the cluster level or cabin level (space level), the first-level protection signal will be triggered, and the cluster-level gas fire extinguishing device will be turned on to extinguish the fire. If the gas fire extinguishing device cannot extinguish the fire, the space-level water sprinkler system (for the cluster-level protection area where the first level is located) will be turned on to extinguish the fire. If the fire extinguishing devices at all levels (package-level gas fire extinguishing devices, cluster-level gas fire extinguishing devices, and space-level water sprinkler pipe network systems) cannot extinguish the fire, the air pressure in the cabin continues to increase. After the air pressure detector reaches the threshold, the control module will turn on the space-level electronically controlled pressure relief plate (space-level explosion-proof module) to relieve pressure on the energy storage system to prevent combustion and explosion and prevent larger-scale hazards.

[0082] If the initial fire occurs at the cluster level or space level, any cluster level or space level triggers a second-level alarm, and the control module turns on the space-level electronically controlled exhaust system to discharge the combustible gas out of the cabin while relieving the pressure. If a composite abnormal signal occurs, the first-level protection signal is triggered, the electronically controlled exhaust system is turned off, and the cluster-level or space-level gas fire extinguishing device is released to extinguish the fire. If the gas fire extinguishing device cannot extinguish the fire, the space-level water sprinkler system is turned on to extinguish the fire. If the fire extinguishing devices at all levels cannot extinguish the fire, the air pressure in the cabin continues to increase. After the air pressure detector reaches the threshold, the control module turns on the space-level electronically controlled pressure relief panel to relieve the pressure on the energy storage system to prevent combustion and explosion.

[0083] like Figure 7 The present application also provides an energy storage system, which includes:

[0084] A battery compartment, wherein the battery compartment includes a plurality of battery clusters, each battery cluster includes a plurality of battery packs;

[0085] A fire control system, the fire control system comprising a fire detection device, a fire fighting device and a controller, the controller being communicatively connected to a battery management system of the battery pack;

[0086] The controller is used to execute the fire control method of the energy storage system in the above embodiment.

[0087] Specifically, the energy storage system includes a battery compartment 10, the battery compartment 10 includes a plurality of battery clusters 11, each battery cluster includes a plurality of battery packs 111; a fire control system 20, the fire control system includes a fire detection device 21, a fire fighting device 22 and a controller 23, the controller 23 is communicatively connected with the battery management system 30 of the battery pack 111; the controller 23 is used to execute the fire control method of the energy storage system as in the above-mentioned embodiment.

[0088] It can be understood that the above energy storage system realizes fire control protection for multi-level fire control areas through the controller, has fire control functions, and makes the energy storage system fire-safe.

[0089] like Figure 8 As shown, the embodiment of the present application further provides a fire control device 200 of an energy storage system, wherein the energy storage system comprises a box body, wherein the box body is provided with N battery compartments, wherein each battery compartment is correspondingly provided with a battery cluster, wherein N is a natural number greater than 1, and wherein the fire control device 200 of the energy storage system comprises:

[0090] A division module 201 is used to divide the energy storage system into multiple levels of fire control areas according to the battery system level;

[0091] The sending module 202 is used to obtain the fire characteristic information corresponding to each fire control area, and send corresponding fire instructions to the fire fighting devices in the fire control areas of multiple levels based on the fire characteristic information;

[0092] The control module 203 is used to control the fire fighting devices in the fire fighting control areas at multiple levels to execute fire fighting according to corresponding fire fighting instructions.

[0093] The embodiment of the present application further provides an electronic device, which integrates a fire control device of any energy storage system provided in the embodiment of the present application, and the electronic device includes:

[0094] one or more processors;

[0095] Memory; and

[0096] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor in any of the above-mentioned embodiments of the fire control method for the energy storage system.

[0097] The present application also provides an electronic device that integrates a fire control device of any energy storage system provided in the present application. Fig. 9 As shown, it shows a schematic diagram of the structure of the electronic device involved in the embodiment of the present application, specifically:

[0098] The electronic device may include components such as a processor 301 with one or more processing cores, a memory 302 with one or more computer-readable storage media, a power supply 303, and an input unit 304. Those skilled in the art will appreciate that Fig. 9 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0099] The processor 301 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 302, and calling data stored in the memory 302, it executes various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Optionally, the processor 301 may include one or more processing cores; preferably, the processor 301 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 301.

[0100] The memory 302 can be used to store software programs and modules. The processor 301 executes various functional applications and data processing by running the software programs and modules stored in the memory 302. The memory 302 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory 302 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 302 may also include a memory controller to provide the processor 301 with access to the memory 302.

[0101] The electronic device also includes a power supply 303 for supplying power to each component. Preferably, the power supply 303 can be logically connected to the processor 301 through a power management system, so that the power management system can manage charging, discharging, power consumption and other functions. The power supply 303 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

[0102] The electronic device may further include an input unit 304, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0103] Although not shown, the electronic device may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 301 in the electronic device will load the executable files corresponding to the processes of one or more application programs into the memory 302 according to the following instructions, and the processor 301 will run the application programs stored in the memory 302, thereby realizing various functions, as follows:

[0104] Dividing the energy storage system into multiple levels of fire control zones according to the battery system level;

[0105] Obtaining fire characteristic information corresponding to each of the fire control areas, and sending corresponding fire instructions to fire-fighting devices in multiple levels of fire control areas based on the fire characteristic information;

[0106] Control the fire-fighting devices in the fire control areas at multiple levels to execute fire-fighting according to corresponding fire-fighting instructions.

[0107] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0108] To this end, an embodiment of the present application provides a computer-readable storage medium, which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any fire control method of an energy storage system provided in the embodiment of the present application. For example, the computer program can be loaded by a processor to execute the following steps:

[0109] Dividing the energy storage system into multiple levels of fire control zones according to the battery system level;

[0110] Obtaining fire characteristic information corresponding to each of the fire control areas, and sending corresponding fire instructions to fire-fighting devices in multiple levels of fire control areas based on the fire characteristic information;

[0111] Control the fire-fighting devices in the fire control areas at multiple levels to execute fire-fighting according to corresponding fire-fighting instructions.

[0112] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0113] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0114] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A fire control method for an energy storage system, characterized in that: include: Dividing the energy storage system into multiple levels of fire control zones according to the battery system level; Obtaining fire characteristic information corresponding to each of the fire control areas, and sending corresponding fire instructions to fire-fighting devices in multiple levels of fire control areas based on the fire characteristic information; Control the fire-fighting devices in the fire control areas at multiple levels to execute fire-fighting according to corresponding fire-fighting instructions.

2. The fire control method of the energy storage system according to claim 1, characterized in that: The fire control area includes a cabin-level fire control area corresponding to the space where the battery compartment in the battery system is located, and / or a cluster-level fire control area corresponding to the space where each battery cluster in the battery compartment is located, and / or a pack-level fire control area corresponding to the space where each battery pack in the battery cluster is located. The fire characteristic information corresponding to each fire control area is obtained, including: By monitoring at least one of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force in the pack-level fire control area through the pack-level detection device in the energy storage system, and the current state information of the battery pack monitored by the battery management system of the battery pack, the fire characteristic information corresponding to the pack-level fire control area is obtained; and / or, By monitoring at least one of the battery compartment temperature, battery compartment combustible gas concentration, battery compartment smoke concentration, battery compartment fire image, battery compartment thermal image, and battery compartment air pressure in the compartment fire control area through the compartment-level detection device in the energy storage system, fire characteristic information corresponding to the battery compartment fire control area is obtained; and / or, The cluster-level detection device in the energy storage system monitors at least one of the battery cluster temperature, battery cluster combustible gas concentration, battery cluster smoke concentration, battery cluster fire image, and battery cluster thermal image in the cluster-level fire control area to obtain fire characteristic information corresponding to the cluster-level fire control area.

3. The fire control method of the energy storage system according to claim 2, characterized in that: The sending corresponding firefighting instructions to firefighting devices in multiple levels of fire control areas based on the fire characteristic information includes: determining a battery pack fire condition based on fire characteristic information corresponding to the pack-level fire control area, and generating a battery pack fire fighting instruction based on the battery pack fire condition; Obtain a battery pack fire fighting result in response to the battery pack fire fighting instruction feedback, and determine the battery cluster fire condition and / or battery compartment fire condition based on the battery pack fire fighting result and the fire characteristic information corresponding to the cluster-level fire fighting control area or the compartment-level fire fighting control area, and determine a fire extinguishing instruction based on the battery cluster fire condition and / or battery compartment fire condition.

4. The fire control method of the energy storage system according to claim 2, characterized in that: The determining of the battery pack fire condition based on the fire characteristic information corresponding to the pack-level fire control area, and generating a battery pack fire fighting instruction based on the battery pack fire condition, includes: If any one of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force meets the corresponding thermal runaway condition, and the current state information is normal, it is determined that the battery pack fire condition is a level 3 battery pack fire, and it is determined that the battery pack fire fighting instruction includes a level 3 warning instruction; If at least two of the battery pack temperature, the battery pack combustible gas concentration, the battery pack sound, and the battery pack expansion force meet corresponding thermal runaway conditions, and the current state information is normal, it is determined that the battery pack fire is a secondary battery pack fire, and it is determined that the battery pack fire fighting instruction includes a secondary alarm instruction and a battery pack pressure relief instruction; If at least two of the battery pack temperature, battery pack combustible gas concentration, battery pack sound, and battery pack expansion force meet corresponding thermal runaway conditions, and the current status information is abnormal, the battery pack fire is determined to be a level one fire, and it is determined that the battery pack fire fighting instruction includes a level one protection instruction and a battery pack fire extinguishing instruction.

5. The fire control method of the energy storage system according to claim 2, characterized in that: The obtaining of the battery pack fire fighting result in response to the battery pack fire fighting instruction feedback, and determining the battery cluster fire condition and / or the battery compartment fire condition based on the battery pack fire fighting result and the fire characteristic information corresponding to the cluster-level fire fighting control area or the compartment-level fire fighting control area, and determining the fire extinguishing instruction based on the battery cluster fire condition and / or the battery compartment fire condition, includes: If the fire fighting result of the battery pack is that the fire has not spread to the cluster-level fire control area or the cabin-level fire control area, and any one of the fire characteristic information corresponding to the cluster-level fire control area or the cabin-level fire control area meets the corresponding thermal runaway condition, it is determined that the battery cluster fire and / or battery cabin fire is a secondary fire, and it is determined that the fire fighting instruction includes a secondary alarm instruction and a battery cabin pressure relief instruction; If the fire fighting result of the battery pack is that the fire spreads to the cluster-level fire control area or the cabin-level fire control area, any one of the fire characteristic information corresponding to the cluster-level fire control area or the cabin-level fire control area meets the corresponding thermal runaway condition, or, If the battery pack fire fighting result is that the fire has not spread to the cluster-level fire control area or the cabin-level fire control area, and any two of the fire characteristic information corresponding to the cluster-level fire control area and / or the cabin-level fire control area meet the corresponding thermal runaway conditions, the battery cluster fire and / or battery cabin fire is determined to be a level 1 fire, and it is determined that the fire fighting instruction includes a level 1 protection instruction and a fire extinguishing instruction.

6. The fire control method of the energy storage system according to claim 5, characterized in that: After determining that the fire protection instruction includes a primary protection instruction and a fire extinguishing instruction, the method further includes: Acquire a first firefighting result in response to the first-level protection instruction and the fire extinguishing instruction feedback; The firefighting instruction is updated based on the first firefighting result.

7. The fire control method of the energy storage system according to claim 6, characterized in that: The updating of the firefighting instruction based on the first firefighting result includes: When the first firefighting result is that the first-level fire cannot be effectively controlled, the firefighting instruction is determined to be a battery compartment water sprinkler fire extinguishing instruction.

8. The fire control method of the energy storage system according to claim 7, characterized in that: After determining that the fire fighting instruction is a battery compartment water spray fire fighting instruction, the method further includes: Acquire a second firefighting result in response to the battery compartment water sprinkler fire extinguishing instruction feedback; The firefighting instruction is updated based on the second firefighting result.

9. The fire control method of the energy storage system according to claim 8, characterized in that: The updating of the firefighting instruction based on the second firefighting result includes: If the second fire fighting result is that the fire cannot be effectively controlled and it is detected that the air pressure in the battery compartment is greater than a preset air pressure threshold, the fire fighting instruction is determined to be a battery compartment explosion-proof instruction.

10. An energy storage system, characterized in that: include: A battery compartment, wherein the battery compartment includes a plurality of battery clusters, each battery cluster includes a plurality of battery packs; A fire control system, the fire control system comprising a fire detection device, a fire fighting device and a controller, the controller being communicatively connected to a battery management system of the battery pack; The controller is used to execute the method according to claims 1-9.

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