Energy storage system and fire fighting method

Abstract

The invention provides an energy storage system and a fire fighting method, and relates to the field of batteries. The energy storage system comprises a bin body, a battery device and a fire fighting device, and the battery device is contained in the bin body. The fire-fighting device comprises a first fire-fighting mechanism and a second fire-fighting mechanism, the first fire-fighting mechanism is arranged outside the bin body, and the first fire-fighting mechanism is configured to provide a fire extinguishing medium into the bin body. And the second fire-fighting mechanism is arranged in the bin body and is configured to provide a heat absorption medium into the bin body. And the first fire-fighting mechanism and the second fire-fighting mechanism are matched to carry out fire fighting on the bin body, the good fire-fighting effect is achieved, and fire extinguishing and explosion suppression can be rapidly achieved. Due to the fact that the first fire-fighting mechanism is arranged outside the bin body, and the second fire-fighting mechanism is arranged in the bin body, the first fire-fighting mechanism is not prone to being affected by fire behaviors compared with the second fire-fighting mechanism, and the first fire-fighting mechanism can be triggered stably. Compared with the first fire-fighting mechanism, the second fire-fighting mechanism can quickly respond and quickly restrain thermal runaway, and the reliability of the energy storage system can be improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more particularly, to an energy storage system and a fire-fighting method. Background Art

[0002] With the rapid development of technology, electric energy has become an indispensable energy source in people's production and life. To improve the smoothness of electric energy supply and ensure the normal operation of production and life, an energy storage system is required. As a device for cyclically storing and releasing electric energy, the energy storage system stores electric energy in the energy storage system or supplies the electric energy stored in the energy storage system to the electrical device by charging or discharging the energy storage system. The energy storage system is widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, energy storage power stations and other fields.

[0003] In the development of energy storage systems, in addition to improving the performance of energy storage systems, how to improve the reliability of energy storage systems is also an issue that cannot be ignored. Therefore, how to improve the reliability of energy storage systems is a continuously improving technical problem in energy storage technology. Summary of the Invention

[0004] An object of embodiments of this application is to provide an energy storage system and a fire-fighting method that can improve the reliability of the energy storage system.

[0005] In a first aspect, embodiments of this application provide an energy storage system. The energy storage system includes a bin body, a battery device, and a fire-fighting device. The battery device is accommodated in the bin body. The fire-fighting device includes a first fire-fighting mechanism and a second fire-fighting mechanism. The first fire-fighting mechanism is disposed outside the bin body and is configured to provide a fire-extinguishing medium into the bin body. The fire-extinguishing medium is used to form an inert environment in the bin body. The second fire-fighting mechanism is disposed inside the bin body and is configured to provide an endothermic medium into the bin body.

[0006] In the above technical solution, the fire-fighting device includes a first fire-fighting mechanism and a second fire-fighting mechanism. The first fire-fighting mechanism is arranged outside the storage bin and can supply a fire-extinguishing medium into the storage bin. The fire-extinguishing medium can extinguish the fire of the battery device that has experienced thermal runaway and inhibit the further development of thermal runaway. The second fire-fighting mechanism is arranged inside the storage bin and can supply an endothermic medium into the storage bin. The endothermic medium can absorb the heat inside the storage bin, quickly reduce the temperature inside the storage bin, and inhibit the further development of thermal runaway. The first fire-fighting mechanism and the second fire-fighting mechanism cooperate to carry out fire-fighting on the storage bin, having a good fire-fighting effect, being able to quickly achieve fire extinguishing and explosion suppression, and being beneficial to improving the reliability of the energy storage system. Since the first fire-fighting mechanism is arranged outside the storage bin and the second fire-fighting mechanism is arranged inside the storage bin, the first fire-fighting mechanism is less likely to be affected by the fire compared with the second fire-fighting mechanism, and the first fire-fighting mechanism can be stably triggered, which is beneficial to improving the reliability of the energy storage system. When the battery device experiences thermal runaway, the second fire-fighting mechanism can respond quickly compared with the first fire-fighting mechanism and quickly inhibit thermal runaway, which is beneficial to improving the reliability of the energy storage system.

[0007] As an optional technical solution of an embodiment of the present application, the fire-fighting device includes a fire-fighting host and a fire-fighting sensor. The fire-fighting sensor is arranged inside the storage bin. The fire-fighting sensor is used to obtain first data inside the storage bin. The fire-fighting sensor, the first fire-fighting mechanism, and the second fire-fighting mechanism are all communicatively connected to the fire-fighting host. The fire-fighting host is used to adjust the working states of the first fire-fighting mechanism and the second fire-fighting mechanism. The working states of the first fire-fighting mechanism and the second fire-fighting mechanism are associated with the first data.

[0008] In the above technical solution, the fire-fighting sensor can obtain the first data inside the storage bin. According to the first data, it can be judged whether the battery device inside the storage bin has experienced thermal runaway. The fire-fighting sensor, the first fire-fighting mechanism, and the second fire-fighting mechanism are all communicatively connected to the fire-fighting host. The fire-fighting host can open or close the first fire-fighting mechanism and the second fire-fighting mechanism according to the first data, so as to realize the fire-fighting of the storage bin, which is beneficial to improving the degree of automation and the timeliness of fire-fighting, and thus is beneficial to improving the reliability of the energy storage system.

[0009] As an optional technical solution of an embodiment of the present application, the first fire-fighting mechanism includes a first medium storage, a first pipe body, and a first throttling device. The first medium storage is used to store the fire-extinguishing medium. The first pipe body connects the first medium storage and the storage bin. The first throttling device is arranged on the first pipe body. The first throttling device is communicatively connected to the fire-fighting host. The fire-fighting host is used to adjust the working state of the first throttling device to adjust the working state of the first fire-fighting mechanism. The working state of the first throttling device is associated with the first data.

[0010] In the above technical solution, when the first shut-off device is opened, the first shut-off device allows the first medium storage to supply the fire extinguishing medium to the chamber through the first pipe body. When the first shut-off device is closed, the first shut-off device prevents the first medium storage from supplying the fire extinguishing medium to the chamber through the first pipe body. That is, when the first shut-off device is opened, the first fire-fighting mechanism is opened, and when the first shut-off device is closed, the first fire-fighting mechanism is closed. The fire-fighting host can automatically control the opening of the first shut-off device according to the first data obtained by the fire-fighting sensor, which is beneficial to improving the degree of automation and the timeliness of fire-fighting, and thus beneficial to improving the reliability of the energy storage system.

[0011] As an alternative technical solution of the embodiment of the present application, the chamber is provided with an air outlet, the fire-fighting device includes an air-exhaust mechanism, the air-exhaust mechanism is arranged corresponding to the air outlet, the air-exhaust mechanism is communicatively connected with the fire-fighting host, the fire-fighting host is used to adjust the working state of the air-exhaust mechanism, and the working state of the air-exhaust mechanism is associated with the first data.

[0012] In the above technical solution, when the air-exhaust mechanism is opened, the air-exhaust mechanism can quickly discharge the oxygen and combustible gas in the chamber out of the chamber. On the one hand, it can reduce the concentration of oxygen and combustible gas in the chamber, thereby reducing the risk of further development of thermal runaway. On the other hand, it can create a negative pressure in the chamber, thus facilitating the entry of the fire extinguishing medium into the chamber.

[0013] As an alternative technical solution of the embodiment of the present application, the fire-fighting device includes a concentration sensor, the concentration sensor is used to detect the concentration of the fire extinguishing medium in the chamber, the concentration sensor is communicatively connected with the fire-fighting host, the fire-fighting host is used to adjust the working state of the air-exhaust mechanism and the working state of the first shut-off device, and the working states of the air-exhaust mechanism and the first shut-off device are both associated with the concentration.

[0014] In the above technical solution, the concentration sensor can detect the concentration of the fire extinguishing medium in the chamber. When the concentration of the fire extinguishing medium in the chamber reaches the first threshold, it indicates that the concentration of the fire extinguishing medium in the chamber is relatively high. At this time, the fire-fighting host can control the air-exhaust mechanism and the first shut-off device to close, so that the air-exhaust mechanism no longer discharges the gas in the chamber outwards, and the first medium storage no longer supplies the fire extinguishing medium to the chamber, keeping the concentration of the fire extinguishing medium in the chamber above the first threshold, which has a good fire-fighting effect. In this way, it can not only reduce the cost of fire-fighting, but also make the energy storage system have better reliability.

[0015] As an alternative technical solution of the embodiment of the present application, the chamber is provided with a medium inlet, the first fire-fighting mechanism is communicated with the medium inlet, and along the height direction of the chamber, the position of the air outlet is higher than the position of the medium inlet.

[0016] In the above technical solution, generally speaking, the weight of the fire extinguishing medium is heavier than that of oxygen and combustible gas. By setting the position of the air outlet higher than that of the medium inlet, it is easier for the air exhaust mechanism to discharge oxygen and combustible gas from the chamber, which is beneficial to gradually fill the chamber with the fire extinguishing medium and improve the reliability of the energy storage system.

[0017] As an alternative technical solution of the embodiment of the present application, the chamber includes two oppositely arranged wall portions, the medium inlet is arranged on one of the wall portions, and the air outlet is arranged on the other wall portion.

[0018] In the above technical solution, the medium inlet and the air outlet are respectively arranged on two oppositely arranged wall portions of the chamber, which is beneficial to fill the chamber with the fire extinguishing medium as much as possible to improve the fire protection effect and the reliability of the energy storage system.

[0019] As an alternative technical solution of the embodiment of the present application, the chamber is provided with a medium inlet, the first fire protection mechanism is communicated with the medium inlet, the fire protection device includes an air inlet mechanism, the air inlet mechanism is arranged corresponding to the medium inlet, the air inlet mechanism is communicatively connected with the fire protection host, the fire protection host is used to adjust the working state of the air inlet mechanism, and the working state of the air inlet mechanism is associated with the first data.

[0020] In the above technical solution, when the air inlet mechanism is opened, the air inlet mechanism can make the fire extinguishing medium provided by the first medium storage device fill the chamber faster to improve the fire protection effect and the reliability of the energy storage system.

[0021] As an alternative technical solution of the embodiment of the present application, the fire protection device includes a concentration sensor, the concentration sensor is used to detect the concentration of the fire extinguishing medium in the chamber, the concentration sensor is communicatively connected with the fire protection host, the fire protection host is used to adjust the working state of the air inlet mechanism, and the working state of the air inlet mechanism is associated with the concentration.

[0022] In the above technical solution, the concentration sensor can detect the concentration of the fire extinguishing medium in the chamber. When the concentration of the fire extinguishing medium in the chamber reaches the first threshold, it indicates that the concentration of the fire extinguishing medium in the chamber is relatively high. At this time, the fire protection host can control the air inlet mechanism and the first fire protection mechanism to close, and no longer supply the fire extinguishing medium into the chamber, so as to keep the concentration of the fire extinguishing medium in the chamber above the first threshold, which has a good fire protection effect. In this way, both the cost of fire protection can be reduced and the energy storage system can have good reliability.

[0023] As an alternative technical solution of the embodiment of the present application, the second fire-fighting mechanism includes a second medium storage, a spray pipeline, and a second throttling device. The second medium storage is used to store the heat-absorbing medium. The spray pipeline is connected to the second medium storage. The second throttling device is arranged on the spray pipeline. The spray pipeline is used to provide the heat-absorbing medium to the inside of the bin when the second throttling device is opened. The second throttling device is communicatively connected to the fire-fighting host. The fire-fighting host is used to adjust the working state of the second throttling device to adjust the working state of the second fire-fighting mechanism. The working state of the second throttling device is associated with the first data.

[0024] In the above technical solution, when the second throttling device is opened, the second throttling device allows the second medium storage to spray the heat-absorbing medium into the bin through the spray pipeline. When the second throttling device is closed, the second throttling device prevents the second medium storage from spraying the heat-absorbing medium into the bin through the spray pipeline. That is, when the second throttling device is opened, the second fire-fighting mechanism is opened. When the second throttling device is closed, the second fire-fighting mechanism is closed. The fire-fighting host can automatically control the second throttling device to open according to the first data obtained by the fire-fighting sensor, which is beneficial to improving the degree of automation and the timeliness of fire-fighting, and thus beneficial to improving the reliability of the energy storage system.

[0025] As an alternative technical solution of the embodiment of the present application, the energy storage system includes a plurality of battery clusters. Each battery cluster includes a plurality of the battery devices stacked in the height direction. The spray pipeline includes a plurality of second pipe bodies. At least one second pipe body is correspondingly arranged for each battery cluster. Each second pipe body is provided with the second throttling device. Each second pipe body is used to provide the heat-absorbing medium to the corresponding battery cluster when the second throttling device is opened.

[0026] In the above technical solution, at least one second pipe body is correspondingly arranged for each battery cluster. When the second throttling device of the second pipe body corresponding to the battery cluster is opened, the second pipe body can spray the heat-absorbing medium to the corresponding battery cluster. In this way, when only one battery device in one of the plurality of battery clusters has a thermal runaway, the second throttling device on the second pipe body corresponding to the battery cluster can be opened, so as to directionally spray the heat-absorbing medium to the battery cluster with the thermal runaway, which is beneficial to improving the accuracy of fire-fighting and reducing the fire-fighting cost.

[0027] As an alternative technical solution of the embodiment of the present application, the battery device includes battery cells and a battery monitoring unit, and the battery monitoring unit is configured to obtain second data of the battery cells; the energy storage system includes a plurality of sub-control modules, one of the sub-control modules is correspondingly arranged for each battery cluster, each of the sub-control modules is communicatively connected to the battery monitoring units of the plurality of battery devices in the corresponding battery cluster, each of the sub-control modules is communicatively connected to the fire control host, and the operating state of the second intercepting device is associated with the first data and the second data.

[0028] In the above technical solution, one sub-control module is correspondingly arranged for each battery cluster. The sub-control module can serve as the battery management unit of the battery cluster and is used to monitor and manage the battery cluster. Each sub-control module is communicatively connected to the battery monitoring units of the plurality of battery devices in the corresponding battery cluster, so as to obtain the second data of the battery cells of the plurality of battery devices in the corresponding battery cluster. Whether the battery device undergoes thermal runaway can be judged according to the second data. In this way, the fire control host can open the second intercepting device on the second pipe body corresponding to the battery cluster according to the first data and the second data, so as to spray the heat absorption medium towards the battery cluster where thermal runaway occurs in a targeted manner, which is beneficial to improving the accuracy of fire fighting and reducing the fire fighting cost.

[0029] As an alternative technical solution of the embodiment of the present application, the fire sensor includes at least one of a temperature sensor, a smoke detector, and a combustible gas detector.

[0030] In the above technical solution, the temperature detector can detect abnormal temperature changes in the bin body. When the temperature exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host controls the first fire-fighting mechanism and the second fire-fighting mechanism to open, so as to provide a fire-extinguishing medium and a heat-absorbing medium to the bin body, realizing fire extinguishing and improving the reliability of the energy storage system. The smoke detector can detect characteristics such as the smoke concentration, color, and smell in the bin body. When the smoke concentration exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host opens the first fire-fighting mechanism and the second fire-fighting mechanism to provide a fire-extinguishing medium and a heat-absorbing medium to the bin body, realizing fire extinguishing and improving the reliability of the energy storage system. The combustible gas detector can detect the concentration of combustible gas in the bin body. When the concentration of combustible gas exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host controls the first fire-fighting mechanism and the second fire-fighting mechanism to open, so as to provide a fire-extinguishing medium and a heat-absorbing medium to the bin body, realizing fire extinguishing and improving the reliability of the energy storage system. When the fire sensor includes a temperature detector, a smoke detector, and a combustible gas detector, the temperature information, smoke characteristic information, and combustible gas concentration can be combined to accurately judge the fire development stage, thereby reducing the risk of false fire alarms, enabling the fire control host to effectively and accurately control the first fire-fighting mechanism and the second fire-fighting mechanism to open, providing a fire-extinguishing medium and a heat-absorbing medium to the bin body, realizing fire extinguishing and improving the reliability of the energy storage system.

[0031] As an optional technical solution of the embodiment of the present application, the fire-fighting device includes an alarm, the alarm is communicatively connected to the fire control host, the fire control host is used to adjust the working state of the alarm, and the working state of the alarm is associated with the first data.

[0032] In the above technical solution, the fire control host can activate the alarm according to the first data to emit an alarm signal to prompt the evacuation of surrounding personnel, which is beneficial to improving the reliability of the energy storage system.

[0033] As an optional technical solution of the embodiment of the present application, the first fire-fighting mechanism includes a first medium storage and a first pipe body. The first medium storage is used to store the fire-extinguishing medium, and the first pipe body connects the first medium storage and the bin body.

[0034] In the above technical solution, both the first medium storage and the first pipe body are arranged outside the bin body. The first pipe body connects the first medium storage and the bin body, so that the fire-extinguishing medium stored in the first medium storage can be provided to the bin body through the first pipe body, thereby realizing the fire protection of the bin body.

[0035] As an optional technical solution of the embodiment of the present application, the first pipe body is provided with a first throttling device.

[0036] In the above technical solution, when the first shut-off device is opened, the first shut-off device allows the first medium storage to supply the fire extinguishing medium to the chamber through the first pipe body. When the first shut-off device is closed, the first shut-off device prevents the first medium storage from supplying the fire extinguishing medium to the chamber through the first pipe body. That is, when the first shut-off device is opened, the first fire protection mechanism is opened, and when the first shut-off device is closed, the first fire protection mechanism is closed.

[0037] As an alternative technical solution of the embodiment of the present application, the second fire protection mechanism includes a second medium storage and a spray pipeline. The second medium storage is used to store the endothermic medium, the spray pipeline is connected to the second medium storage, and the spray pipeline is used to supply the endothermic medium into the chamber.

[0038] In the above technical solution, both the second medium storage and the spray pipeline are arranged in the chamber. The spray pipeline is connected to the second medium storage, and the endothermic medium stored in the second medium storage can be sprayed into the chamber through the spray pipeline, thereby realizing the fire protection of the chamber.

[0039] As an alternative technical solution of the embodiment of the present application, the energy storage system includes a plurality of battery clusters. Each battery cluster includes a plurality of the battery devices stacked in the height direction. The spray pipeline includes a plurality of second pipe bodies. At least one second pipe body is correspondingly arranged for each battery cluster, and each second pipe body is used to release the endothermic medium to the corresponding battery cluster.

[0040] In the above technical solution, at least one second pipe body is correspondingly arranged for each battery cluster, and the second pipe body can spray the endothermic medium to the corresponding battery cluster. In this way, when a battery device in a battery cluster has a thermal runaway, multiple first pipe bodies can spray to multiple battery clusters simultaneously, or some of the multiple first pipe bodies can spray the endothermic medium to the battery cluster with a thermal runaway directionally.

[0041] As an alternative technical solution of the embodiment of the present application, each second pipe body is provided with a second shut-off device.

[0042] In the above technical solution, when the second shut-off device is opened, the second shut-off device allows the second medium storage to spray the endothermic medium into the chamber through the spray pipeline. When the second shut-off device is closed, the second shut-off device prevents the second medium storage from spraying the endothermic medium into the chamber through the spray pipeline. That is, when any one of the second shut-off devices is opened, the second fire protection mechanism is opened, and when all the second shut-off devices are closed, the second fire protection mechanism is closed.

[0043] As an alternative technical solution of the embodiment of the present application, the second fire-fighting mechanism is located above the plurality of battery clusters, the plurality of battery clusters are arranged in a first direction, the plurality of second pipe bodies are arranged in the first direction, and the first direction is perpendicular to the height direction.

[0044] In the above technical solution, by arranging the second fire-fighting mechanism above the plurality of battery clusters, when the second fire-fighting mechanism sprays the heat-absorbing medium, the heat-absorbing medium can act on all the battery devices of the battery cluster, realizing fire-fighting for all the battery devices of the battery cluster, which is beneficial to improving the reliability of the energy storage system.

[0045] As an alternative technical solution of the embodiment of the present application, a nozzle is provided at one end of the second pipe body close to the battery cluster, and in a projection plane perpendicular to the height direction, the orthographic projection of the nozzle and the orthographic projection of the battery cluster do not overlap.

[0046] In the above technical solution, by making the orthographic projection of the nozzle in the projection plane perpendicular to the height direction and the orthographic projection of the battery cluster in the projection plane perpendicular to the height direction not overlap, the nozzle can spray the heat-absorbing medium onto the battery cluster from one side of the battery cluster, which is beneficial to making the heat-absorbing medium act on all the battery devices of a battery cluster, realizing fire-fighting for all the battery devices of the battery cluster, and is beneficial to improving the reliability of the energy storage system.

[0047] As an alternative technical solution of the embodiment of the present application, the fire-extinguishing medium includes at least one of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon.

[0048] In the above technical solution, the chemical properties of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon are relatively stable. They are neither flammable nor combustible, and are not likely to react chemically with the components in the warehouse body. They can effectively inhibit combustion and have a good fire-fighting effect. Especially carbon dioxide, which not only has a low cost but also is easy to store. It can absorb heat during phase change, which is beneficial to reducing the temperature in the warehouse body. In addition, carbon dioxide is relatively friendly to the environment.

[0049] As an alternative technical solution of the embodiment of the present application, the heat-absorbing medium includes at least one of dry ice and liquid nitrogen.

[0050] In the above technical solution, dry ice and liquid nitrogen can absorb a large amount of heat during phase change, rapidly reducing the temperature in the warehouse body. After phase change, they are neither flammable nor combustible, and are not likely to react chemically with the components in the warehouse body. They can effectively inhibit combustion and have a good fire-fighting effect.

[0051] Second aspect, an embodiment of the present application further provides a fire-fighting method for fire-fighting an energy storage system, where the energy storage system includes a storage body and a battery device, the battery device is accommodated in the storage body, and the fire-fighting method includes: an exhaust step of exhausting the gas in the storage body; a first fire-fighting step of providing a fire-extinguishing medium to the storage body through a first fire-fighting mechanism located outside the storage body; a second fire-fighting step of providing an endothermic medium to the storage body through a second fire-fighting mechanism located inside the storage body.

[0052] As an optional technical solution of an embodiment of the present application, after the exhaust step, the first fire-fighting step, and the second fire-fighting step, the fire-fighting method further includes: a maintenance step of maintaining the volume concentration of the fire-extinguishing medium in the storage body above a first threshold for a first preset time.

[0053] In the above technical solution, by maintaining the concentration of the fire-extinguishing medium in the storage body above the first threshold for the first preset time, it has a good fire-fighting effect, is beneficial to reducing the risk of secondary thermal runaway, and is beneficial to improving the reliability of the energy storage system.

[0054] As an optional technical solution of an embodiment of the present application, the fire-fighting method further includes: a warning step of sending a warning signal when a first data in the storage body is greater than a second threshold for a second preset time, and after the second preset time, performing the exhaust step, the first fire-fighting step, and the second fire-fighting step, where the first data is used to characterize whether the battery device has a thermal runaway.

[0055] In the above technical solution, when the first data is greater than the second threshold, it indicates that a battery device in the storage body has a thermal runaway. At this time, the fire-fighting host starts the alarm to prompt the surrounding personnel to evacuate. After the second preset time, performing the exhaust step and the fire-fighting step is beneficial to reducing the risk of danger to the surrounding personnel due to the action of the fire-fighting medium.

[0056] As an optional technical solution of an embodiment of the present application, the mass ratio of the fire-extinguishing medium and the endothermic medium provided to the storage body is 1:1 to 3:1.

[0057] In the above technical solution, when the mass ratio of the fire-extinguishing medium and the endothermic medium provided to the storage body is 1:1 to 3:1, the mass ratio of the fire-extinguishing medium and the endothermic medium is relatively appropriate, which can not only effectively absorb the heat in the storage body and reduce the temperature in the storage body, but also have a good fire-fighting effect, is beneficial to suppressing the further development of thermal runaway, and improves the reliability of the energy storage system. Description of the Drawings

[0058] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0059] Figure 1 Schematic structural diagram of an energy storage system provided by some embodiments of the present application; Figure 2 Schematic internal structure diagram of an energy storage system provided by some embodiments of the present application; Figure 3 Schematic block diagram of a fire protection device provided by some embodiments of the present application; Figure 4 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 5 Cross-sectional view of a bin body provided by some embodiments of the present application; Figure 6 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 7 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 8 Cross-sectional view of a bin body provided by some other embodiments of the present application; Figure 9 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 10 Schematic structural diagram of a second fire protection mechanism provided by some embodiments of the present application; Figure 11 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 12 Schematic block diagram of a battery device provided by some embodiments of the present application; Figure 13 Schematic connection diagram of multiple battery devices and a sub-control module provided by some embodiments of the present application; Figure 14 Schematic block diagram of a battery device provided by some other embodiments of the present application; Figure 15 Schematic framework diagram of a control system in an energy storage system provided by some embodiments of the present application; Figure 16 Schematic framework diagram of a control system in an energy storage system provided by some other embodiments of the present application; Figure 17 Schematic block diagram of a fire protection method provided by some embodiments of the present application; Figure 18 Schematic block diagram of a fire-fighting method provided for other embodiments of the present application; Figure 19 Schematic block diagram of a fire-fighting method provided for still other embodiments of the present application.

[0060] Icons: 10 - energy storage system; 100 - storage body; 110 - air outlet; 120 - medium inlet; 200 - battery cluster; 210 - battery device; 211 - battery cell; 212 - battery monitoring unit; 300 - fire-fighting device; 310 - first fire-fighting mechanism; 311 - first medium storage; 312 - first pipe; 313 - first throttling device; 320 - second fire-fighting mechanism; 321 - second medium storage; 322 - spray pipeline; 3221 - second pipe; 323 - second throttling device; 324 - sprinkler head; 330 - fire-fighting host; 340 - fire-fighting sensor; 350 - exhaust mechanism; 360 - concentration sensor; 370 - air inlet mechanism; 380 - alarm; 400 - sub-control module; 500 - control module; 20 - fire-fighting method. Detailed implementation manners

[0061] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, and thus are only examples and should not be used to limit the protection scope of the present application.

[0062] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be the ordinary meanings understood by those skilled in the art to which the embodiments of the present application belong.

[0063] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present application.

[0064] In addition, the technical terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the embodiments of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0065] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, technical terms such as "installation", "connection", "connection", and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0066] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0067] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0068] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0069] As an example, the battery cell assembly can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with cable ties.

[0070] In some embodiments, the battery device may include one or more battery packs, and the battery pack may include one or more battery cell assemblies. As an example, the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body in a fixed manner, for example. As another example, the battery device includes a plurality of battery packs, and the plurality of battery packs can be connected in series, parallel, and in a hybrid connection.

[0071] As an example, the box body may include a first box body and a second box body. The first box body and the second box body are snapped together so that a closed space is formed inside the box body to accommodate the battery cell assembly. The "closed" here means covered or closed, which can be sealed or unsealed. The first box body can be a top cover or a bottom plate.

[0072] As an example, the box body may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0073] In some embodiments, the multiple battery packs included in the battery device may form one or more battery clusters, so that the energy storage system provided by the embodiments of the present application includes one or more battery clusters to increase the voltage and capacity of the energy storage system. A battery cluster may include multiple battery packs, and the multiple battery packs are connected in series through a busbar component to increase the voltage of the energy storage system. When the energy storage system includes multiple battery clusters, the multiple battery clusters may be connected in series, in parallel, or in a hybrid connection.

[0074] The energy storage system can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage system can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage system can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods. The energy storage system provided by the embodiments of the present application can be any power system that requires an energy storage system.

[0075] In some embodiments, the energy storage system is an energy storage container or an energy storage cabinet.

[0076] In some embodiments, the energy storage system may include a storage body and one or more battery clusters, and the battery clusters are accommodated in the storage body.

[0077] In some embodiments, the energy storage system may include modules such as a thermal management module, a sub-control module, a control module, a power distribution module, and a fire protection module.

[0078] As an example, the thermal management module may include a liquid cooling unit, and the liquid cooling unit provides a first heat exchange medium for regulating the temperature of the battery cells to each battery device through pipelines.

[0079] As an example, the sub-control module may serve as the battery management unit of the battery cluster for monitoring and managing the battery cluster. The sub-control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charge and discharge current, voltage, etc. of the battery cluster. The sub-control module includes modules such as an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU), and a fusion switch.

[0080] As an example, the control module can serve as the battery management unit of the energy storage system, used to monitor and manage the energy storage system. The control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage system. For example, it can control the charge and discharge current, voltage, etc. of the energy storage system. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and a fiber optic conversion module and other modules.

[0081] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., used to detect, alarm or extinguish fires in the energy storage system. As an example, the power distribution device can be used to distribute power to the power consumption modules of the energy storage system.

[0082] Currently, from the perspective of the development of the market situation, the application of battery devices is becoming more and more extensive. Battery devices are not only applied to energy storage power systems such as hydropower, thermal power, wind power and solar power plants, but also widely applied to energy storage systems such as energy storage containers or energy storage cabinets.

[0083] In the development of energy storage systems, in addition to improving the performance of energy storage systems, how to improve the reliability of energy storage systems is also an issue that cannot be ignored. Therefore, how to improve the reliability of energy storage systems is a technical issue that needs continuous improvement in energy storage technology.

[0084] For energy storage systems, improving the fire protection ability of energy storage systems is an important part of improving the reliability of energy storage systems. However, in related technologies, the fire protection ability of energy storage systems is poor, resulting in poor reliability of energy storage systems.

[0085] In view of this, the embodiments of the present application provide an energy storage system, which includes a storage body, a battery device and a fire protection device, and the battery device is accommodated in the storage body. The fire protection device includes a first fire protection mechanism and a second fire protection mechanism. The first fire protection mechanism is arranged outside the storage body and is configured to provide a fire extinguishing medium into the storage body. The second fire protection mechanism is arranged inside the storage body and is configured to provide an endothermic medium into the storage body.

[0086] The fire-fighting device includes a first fire-fighting mechanism and a second fire-fighting mechanism. The first fire-fighting mechanism is arranged outside the storage bin and can supply a fire-extinguishing medium into the storage bin. The fire-extinguishing medium can extinguish the fire of the battery device in thermal runaway and inhibit the further development of thermal runaway. The second fire-fighting mechanism is arranged inside the storage bin and can supply an endothermic medium into the storage bin. The endothermic medium can absorb the heat inside the storage bin, quickly reduce the temperature inside the storage bin, and inhibit the further development of thermal runaway. The first fire-fighting mechanism and the second fire-fighting mechanism cooperate to carry out fire-fighting on the storage bin, having a good fire-fighting effect, being able to quickly achieve fire extinguishing and explosion suppression, and being beneficial to improving the reliability of the energy storage system. Since the first fire-fighting mechanism is arranged outside the storage bin and the second fire-fighting mechanism is arranged inside the storage bin, the first fire-fighting mechanism is less likely to be affected by the fire than the second fire-fighting mechanism, and the first fire-fighting mechanism can be stably triggered, which is beneficial to improving the reliability of the energy storage system. When the battery device is in thermal runaway, the second fire-fighting mechanism can respond quickly compared with the first fire-fighting mechanism and quickly inhibit thermal runaway, which is beneficial to improving the reliability of the energy storage system.

[0087] The energy storage system described in the embodiments of the present application may include an energy storage container or an energy storage cabinet. The energy storage system may include a power conversion device (Power Converter System, abbreviated as PCS). The power conversion device is used to connect between a power generation device and a battery device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the battery device through the power conversion device. As an example, the power generation device may specifically be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc.

[0088] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of the energy storage system 10 provided by some embodiments of the present application. Figure 2 which is an internal structural schematic diagram of the energy storage system 10 provided by some embodiments of the present application. Embodiments of the present application provide an energy storage system 10. The energy storage system 10 includes a storage bin 100, a battery device 210, and a fire-fighting device 300. The battery device 210 is accommodated inside the storage bin 100. The fire-fighting device 300 includes a first fire-fighting mechanism 310 and a second fire-fighting mechanism 320. The first fire-fighting mechanism 310 is arranged outside the storage bin 100, and the first fire-fighting mechanism 310 is configured to supply a fire-extinguishing medium into the storage bin 100. The second fire-fighting mechanism 320 is arranged inside the storage bin 100, and the second fire-fighting mechanism 320 is configured to supply an endothermic medium into the storage bin 100.

[0089] The storage bin 100 can form a hollow structure, and the hollow structure serves as an accommodation space for the components in the energy storage system 10 to protect these components. The storage bin 100 accommodating the battery device 210 means that the battery device 210 is located in the hollow structure formed by the storage bin 100. The battery device 210 located in the hollow structure of the storage bin 100 can be connected to the wall of the storage bin 100 by connecting components such as bolts, rivets, and connecting pins, or it can be first fixed on a storage rack, and then the storage rack is connected to the wall of the storage bin 100 by connecting components such as bolts, rivets, and connecting pins, reducing the possibility of the battery device 210 moving due to shaking in the accommodation space of the storage bin 100, which is beneficial to reducing the possibility of damage to the battery device 210.

[0090] The first fire-fighting mechanism 310 is located outside the storage bin 100, and the first fire-fighting mechanism 310 is used to provide a fire-extinguishing medium into the storage bin 100. The fire-extinguishing medium can include water, foam, dry powder, carbon dioxide, clean gas, wet chemical extinguishing agent, aerosol, sand, etc.

[0091] In some embodiments, the fire-extinguishing medium can form an inert environment inside the storage bin 100 (the fire-extinguishing medium is neither flammable nor can it support combustion. After introducing the fire-extinguishing medium, the concentration of oxygen and combustible gas inside the storage bin 100 can be reduced, thereby inhibiting the further development of thermal runaway). For example, the fire-extinguishing medium can be carbon dioxide, nitrogen, helium, neon, argon, krypton, etc.

[0092] The second fire-fighting mechanism 320 is located inside the storage bin 100, and the second fire-fighting mechanism 320 is used to provide an endothermic medium into the storage bin 100. The endothermic medium can include water, dry ice, liquid nitrogen, aerosol, etc.

[0093] It should be noted that the fire-extinguishing medium can not only have a fire-extinguishing function but also have an endothermic function. The endothermic medium can not only have an endothermic function but also have a fire-extinguishing function. For example, the endothermic medium can be dry ice, and dry ice can absorb heat when it changes phase into carbon dioxide gas, thereby reducing the temperature inside the storage bin 100. At the same time, the carbon dioxide gas will reduce the oxygen concentration near the flame, thus extinguishing the flame.

[0094] In addition, in some embodiments, the fire-extinguishing medium and the endothermic medium can be the same substance in different states. For example, the fire-extinguishing medium can be carbon dioxide gas, and the endothermic medium can be dry ice. Another example is that the fire-extinguishing medium can be nitrogen, and the endothermic medium can be liquid nitrogen.

[0095] The fire-fighting device 300 includes a first fire-fighting mechanism 310 and a second fire-fighting mechanism 320. The first fire-fighting mechanism 310 is arranged outside the bin body 100 and can supply a fire-extinguishing medium into the bin body 100. The fire-extinguishing medium can extinguish the fire of the battery device 210 in thermal runaway and inhibit the further development of thermal runaway. The second fire-fighting mechanism 320 is arranged inside the bin body 100 and can supply an endothermic medium into the bin body 100. The endothermic medium can absorb the heat inside the bin body 100, quickly reduce the temperature inside the bin body 100, and inhibit the further development of thermal runaway. The first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 cooperate to carry out fire-fighting on the bin body 100, having a good fire-fighting effect, being able to quickly achieve fire extinguishing and explosion suppression, and being beneficial to improving the reliability of the energy storage system 10. Since the first fire-fighting mechanism 310 is arranged outside the bin body 100 and the second fire-fighting mechanism 320 is arranged inside the bin body 100, the first fire-fighting mechanism 310 is less likely to be affected by the fire than the second fire-fighting mechanism 320, and the first fire-fighting mechanism 310 can be stably triggered, which is beneficial to improving the reliability of the energy storage system 10. When the battery device 210 is in thermal runaway, the second fire-fighting mechanism 320 can respond quickly compared with the first fire-fighting mechanism 310, quickly inhibit thermal runaway, and is beneficial to improving the reliability of the energy storage system 10.

[0096] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 3 is a schematic block diagram of the fire-fighting device 300 provided by some embodiments of the present application. In some embodiments, the fire-fighting device 300 includes a fire-fighting host 330 and a fire-fighting sensor 340. The fire-fighting sensor 340 is arranged inside the bin body 100, and the fire-fighting sensor 340 is used to obtain the first data inside the bin body 100. The fire-fighting sensor 340, the first fire-fighting mechanism 310, and the second fire-fighting mechanism 320 are all communicatively connected to the fire-fighting host 330. The fire-fighting host 330 is used to adjust the working states of the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320, and the working states of the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 are associated with the first data.

[0097] The fire sensor 340 is used to obtain the first data inside the bin body 100. The first data can be fire data, which can be understood as various phenomena and indicators that can reflect the existence of a fire and related information during a fire, such as smoke, high temperature, flame, combustible gas, etc. Exemplarily, the fire sensor 340 includes a smoke detector, which is also known as a smoke-type fire detector, smoke detector, smoke sensor, smoke probe, and smoke sensor. The smoke detector can detect the smoke concentration inside the bin body 100 for fire prevention. Exemplarily, the fire sensor includes a temperature sensor, which can be used to detect the ambient temperature inside the bin body 100, the temperature of the structural components inside the bin body 100, the temperature of the battery device 210 inside the bin body 100, etc. Exemplarily, the fire sensor 340 includes a combustible gas detector, which can detect the concentration of combustible gas inside the bin body 100 to achieve fire prevention. The combustible gas can be hydrogen, carbon monoxide, etc. Exemplarily, the fire sensor 340 includes a flame detector, which can detect that when a substance burns, while generating smoke and releasing heat, it also generates visible or invisible light radiation that does not exist in the atmosphere.

[0098] The fire control host 330 is used to control electrical components related to fire protection. Optionally, the fire control host 330 can be communicatively connected to the fire sensor 340, the first fire protection mechanism 310, and the second fire protection mechanism 320, and can supply electrical energy to the fire sensor 340.

[0099] Optionally, the fire control host 330 is a control device, which can be installed inside the bin body 100 or outside the bin body 100.

[0100] "The fire control host 330 is used to adjust the working states of the first fire protection mechanism 310 and the second fire protection mechanism 320, and the working states of the first fire protection mechanism 310 and the second fire protection mechanism 320 are associated with the first data" means that the fire control host 330 can turn on or off the first fire protection mechanism 310 and the second fire protection mechanism 320 according to the first data.

[0101] The fire control host 330 can turn on or off the first fire protection mechanism 310 and the second fire protection mechanism 320 according to the first data can be: the fire sensor 340 is used to obtain the first data inside the bin body 100 and send the first data to the fire control host 330, and the fire control host 330 turns on the first fire protection mechanism 310 and the second fire protection mechanism 320 according to the first data, or the fire sensor 340 is used to obtain the first data inside the bin body 100 and send a first signal to the fire control host 330 when the first data exceeds a second threshold, and the fire control host 330 turns on the first fire protection mechanism 310 and the second fire protection mechanism 320 according to the first signal.

[0102] In some embodiments, the fire control host 330 is configured to open the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 when the first data is greater than the second threshold.

[0103] When the fire sensor 340 includes a temperature sensor, the fire control host 330 is configured to open the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 when the temperature inside the bin 100 is greater than the second threshold. When the fire sensor 340 includes a smoke detector, the fire control host 330 is configured to open the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 when the smoke concentration inside the bin 100 is greater than the second threshold. When the fire sensor 340 includes a combustible gas detector, the fire control host 330 is configured to open the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 when the concentration of combustible gas inside the bin 100 is greater than the second threshold. When the fire sensor 340 includes at least two of a temperature sensor, a smoke detector, and a combustible gas detector, as long as the detection result of any one of them exceeds the first threshold, the fire control host 330 opens the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320.

[0104] It should be noted that the working states of the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 can be associated only with the first data. In this case, the fire control host 330 can open or close the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 only according to the first data. The working states of the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 can also be associated with other data. In this case, the fire control host 330 can open or close the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 according to the first data and other data.

[0105] The fire sensor 340 can obtain the first data inside the bin 100, and based on the first data, it can determine whether the battery device 210 inside the bin 100 has a thermal runaway. The fire sensor 340, the first fire-fighting mechanism 310, and the second fire-fighting mechanism 320 are all communicatively connected to the fire control host 330. The fire control host 330 can open or close the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 according to the first data, thereby realizing the fire protection of the bin 100, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0106] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , Figure 4Schematic block diagram of the fire-fighting device 300 provided for other embodiments of the present application. In some embodiments, the first fire-fighting mechanism 310 includes a first medium storage 311, a first pipe body 312, and a first throttling device 313. The first medium storage 311 is used to store the fire-extinguishing medium. The first pipe body 312 connects the first medium storage 311 and the bin body 100. The first throttling device 313 is arranged on the first pipe body 312. The first throttling device 313 is communicatively connected to the fire-fighting host 330. The fire-fighting host 330 is used to adjust the working state of the first throttling device 313 to adjust the working state of the first fire-fighting mechanism 310. The working state of the first throttling device 313 is associated with the first data.

[0107] The first medium storage 311 is a container for storing the fire-extinguishing medium. The first medium storage 311 is arranged outside the bin body 100. For example, the first medium storage 311 may include a tank body, a bottle body, etc.

[0108] The first pipe body 312 is a pipe body structure connecting the first medium storage 311 and the bin body 100. The fire-extinguishing medium stored in the first medium storage 311 can be provided to the bin body 100 through the first pipe body 312.

[0109] The first throttling device 313 is a valve body structure for controlling the connection or disconnection between the first pipe body 312 and the bin body 100. When the first throttling device 313 is opened, the first pipe body 312 and the bin body 100 are connected. When the first throttling device 313 is closed, the first pipe body 312 and the bin body 100 are disconnected.

[0110] When the first throttling device 313 is opened, the first throttling device 313 allows the first medium storage 311 to provide the fire-extinguishing medium to the bin body 100 through the first pipe body 312. When the first throttling device 313 is closed, the first throttling device 313 prevents the first medium storage 311 from providing the fire-extinguishing medium to the bin body 100 through the first pipe body 312. That is, when the first throttling device 313 is opened, the first fire-fighting mechanism 310 is opened. When the first throttling device 313 is closed, the first fire-fighting mechanism 310 is closed.

[0111] The first throttling device 313 can be a butterfly valve, a ball valve, an electric valve, etc.

[0112] "The fire-fighting host 330 is used to adjust the working state of the first throttling device 313 to adjust the working state of the first fire-fighting mechanism 310. The working state of the first throttling device 313 is associated with the first data" means that the fire-fighting host 330 can open or close the first throttling device 313 according to the first data to open or close the first fire-fighting mechanism 310.

[0113] It should be noted that the working state of the first throttling device 313 can be associated only with the first data. In this case, the fire control host 330 can open or close the first throttling device 313 only based on the first data. The working state of the first throttling device 313 can also be associated with other data. In this case, the fire control host 330 can open or close the first throttling device 313 based on the first data and other data.

[0114] The fire control host 330 can automatically control the first throttling device 313 to open according to the first data obtained by the fire sensor 340, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0115] Please refer to Figure 5 and Figure 6 , Figure 5 which is a cross-sectional view of the bin body 100 provided in some embodiments of the present application. Figure 6 which is a schematic block diagram of the fire protection device 300 provided in some other embodiments of the present application. In some embodiments, the bin body 100 is provided with an air outlet 110, and the fire protection device 300 includes an exhaust mechanism 350, and the exhaust mechanism 350 is provided corresponding to the air outlet 110. The exhaust mechanism 350 is communicatively connected to the fire control host 330, and the fire control host 330 is used to adjust the working state of the exhaust mechanism 350, and the working state of the exhaust mechanism 350 is associated with the first data.

[0116] The bin body 100 is provided with an air outlet 110, and the air outlet 110 communicates the inside and the outside of the bin body 100, and the air outlet 110 is used to allow the gas in the bin body 100 to be discharged outward.

[0117] The exhaust mechanism 350 is a mechanism for discharging the gas in the bin body 100 to the outside. The exhaust mechanism 350 can be accommodated in the air outlet 110, or the exhaust mechanism 350 can be provided in the bin body 100 and the position of the exhaust mechanism 350 corresponds to the position of the air outlet 110, so that the gas in the bin body 100 can be discharged outward through the air outlet 110. The exhaust mechanism 350 includes an exhaust fan.

[0118] "The fire control host 330 is used to adjust the working state of the exhaust mechanism 350, and the working state of the exhaust mechanism 350 is associated with the first data" means that the fire control host 330 can open or close the exhaust mechanism 350 according to the first data.

[0119] It should be noted that the working state of the exhaust mechanism 350 can be associated only with the first data. In this case, the fire control host 330 can open or close the exhaust mechanism 350 only based on the first data. The working state of the exhaust mechanism 350 can also be associated with other data. In this case, the fire control host 330 can open or close the exhaust mechanism 350 based on the first data and other data.

[0120] When the exhaust mechanism 350 is opened, the exhaust mechanism 350 can quickly discharge the oxygen and combustible gases in the bin body 100 from the bin body 100. On the one hand, it can reduce the concentrations of oxygen and combustible gases in the bin body 100, thereby reducing the risk of further development of thermal runaway. On the other hand, it can create a negative pressure in the bin body 100, thereby facilitating the entry of the fire extinguishing medium into the bin body 100.

[0121] Please refer to Figure 7 , in some embodiments, the fire protection device 300 includes a concentration sensor 360 for detecting the concentration of the fire extinguishing medium in the bin body 100. The concentration sensor 360 is communicatively connected to the fire protection host 330, and the fire protection host 330 is used to adjust the working states of the exhaust mechanism 350 and the first throttling device 313, and the working states of the exhaust mechanism 350 and the first throttling device 313 are both associated with the concentration.

[0122] The concentration sensor 360 is a structure for detecting the concentration of the fire extinguishing medium in the bin body 100. For example, when the fire extinguishing medium is carbon dioxide, the concentration sensor 360 is a carbon dioxide concentration sensor.

[0123] "The fire protection host 330 is used to adjust the working states of the exhaust mechanism 350 and the first throttling device 313, and the working states of the exhaust mechanism 350 and the first throttling device 313 are both associated with the concentration" means that the fire protection host 330 can open or close the exhaust mechanism 350 and the first throttling device 313 according to the concentration of the fire extinguishing medium in the bin body 100 detected by the concentration sensor 360.

[0124] Since the working states of the exhaust mechanism 350 and the first current collecting device are also associated with the first data, therefore, the fire protection host 330 can open or close the first throttling device 313 according to the first data and the concentration of the fire extinguishing medium in the bin body 100 detected by the concentration sensor 360, and the fire protection host 330 can also open or close the exhaust mechanism 350 according to the first data and the concentration of the fire extinguishing medium in the bin body 100 detected by the concentration sensor 360.

[0125] In some embodiments, the fire protection host 330 can close the exhaust mechanism 350 and the first throttling device 313 according to the concentration of the fire extinguishing medium in the bin body 100 detected by the concentration sensor 360, so as to stop supplying the fire extinguishing medium into the bin body 100 and no longer discharge the gas in the bin body 100 to keep the concentration of the fire extinguishing medium in the bin body 100 above the first threshold. Optionally, the fire protection host 330 is used to close the exhaust mechanism 350 and the first throttling device 313 when the concentration of the fire extinguishing medium reaches the first threshold.

[0126] The concentration sensor 360 can detect the concentration of the fire extinguishing medium in the bin body 100. When the concentration of the fire extinguishing medium in the bin body 100 reaches the first threshold value, it indicates that the concentration of the fire extinguishing medium in the bin body 100 is relatively high. At this time, the fire control host 330 can control the exhaust mechanism 350 and the first throttling device 313 to close, so that the exhaust mechanism 350 no longer discharges the gas in the bin body 100 to the outside, and the first medium storage 311 no longer supplies the fire extinguishing medium to the bin body 100, keeping the concentration of the fire extinguishing medium in the bin body 100 above the first threshold value, which has a good fire-fighting effect. In this way, both the fire-fighting cost can be reduced, and the energy storage system 10 can have better reliability.

[0127] Please refer to Figure 8 , Figure 8 is a cross-sectional view of the bin body 100 provided in some other embodiments of the present application. In some embodiments, the bin body 100 is provided with a medium inlet 120, and the first fire-fighting mechanism 310 is communicated with the medium inlet 120. Along the height direction of the bin body 100, the position of the air outlet 110 is higher than the position of the medium inlet 120.

[0128] Please refer to Figure 8 , the height direction of the bin body 100 is the X direction shown in the figure.

[0129] The medium inlet 120 is a through hole provided in the bin body 100. The medium inlet 120 communicates the inside of the bin body 100 and the first pipe body 312, so that the fire extinguishing medium provided by the first pipe body 312 can enter the bin body 100 through the medium inlet 120.

[0130] "Along the height direction of the bin body 100, the position of the air outlet 110 is higher than the position of the medium inlet 120" means that the height of the air outlet 110 is higher than the height of the medium inlet 120. In other words, the air outlet 110 is farther from the ground than the medium inlet 120.

[0131] Generally speaking, the weight of the fire extinguishing medium is heavier than the weights of oxygen and combustible gas. By making the position of the air outlet 110 higher than the position of the medium inlet 120, it is easier for the exhaust mechanism 350 to discharge oxygen and combustible gas from the bin body 100, which is beneficial to gradually filling the bin body 100 with the fire extinguishing medium and beneficial to improving the reliability of the energy storage system 10.

[0132] Please refer to Figure 8 , in some embodiments, the bin body 100 includes two relatively arranged wall parts, the medium inlet 120 is arranged on one wall part, and the air outlet 110 is arranged on the other wall part.

[0133] Please refer to Figure 8, in the embodiment shown in the figure, the wall portion where the medium inlet 120 is provided and the wall portion where the air outlet 110 is provided are oppositely arranged along the length direction of the bin body 100, and the direction of the bin body 100 is the Y direction shown in the figure.

[0134] The medium inlet 120 and the air outlet 110 are respectively arranged on two oppositely arranged wall portions of the bin body 100, which is beneficial to making the fire extinguishing medium fill the bin body 100 as much as possible to improve the fire fighting effect and is beneficial to improving the reliability of the energy storage system 10.

[0135] Please refer to Figure 8 and Figure 9 , Figure 9 FIG. is a schematic block diagram of a fire fighting device 300 provided in some embodiments of the present application. In some embodiments, the bin body 100 is provided with a medium inlet 120, and the first fire fighting mechanism 310 is communicated with the medium inlet 120. The fire fighting device 300 includes an air inlet mechanism 370, and the air inlet mechanism 370 is arranged corresponding to the medium inlet 120. The air inlet mechanism 370 is communicatively connected to the fire fighting host 330, and the fire fighting host 330 is used to adjust the working state of the air inlet mechanism 370, and the working state of the air inlet mechanism 370 is associated with the first data.

[0136] The air inlet mechanism 370 is a structure for accelerating the rate at which the first fire fighting mechanism 310 supplies the fire extinguishing medium into the bin body 100. The air inlet mechanism 370 can be accommodated in the medium inlet 120, or the air inlet mechanism 370 can be arranged in the bin body 100 and the position of the air inlet mechanism 370 corresponds to the position of the medium inlet 120, so that the fire extinguishing medium provided by the first fire fighting mechanism 310 can fill the bin body 100 faster. The air inlet mechanism 370 includes an air inlet fan.

[0137] "The fire fighting host 330 is used to adjust the working state of the air inlet mechanism 370, and the working state of the air inlet mechanism 370 is associated with the first data" means that the fire fighting host 330 can open or close the air inlet mechanism 370 according to the first data.

[0138] It should be noted that the working state of the air inlet mechanism 370 can be only associated with the first data. At this time, the fire fighting host 330 can open or close the air inlet mechanism 370 only according to the first data. The working state of the air inlet mechanism 370 can also be associated with other data. At this time, the fire fighting host 330 can open or close the air inlet mechanism 370 according to the first data and other data.

[0139] When the air inlet mechanism 370 is opened, the air inlet mechanism 370 can make the fire extinguishing medium provided by the first medium storage 311 fill the bin body 100 faster, so as to improve the fire fighting effect and is beneficial to improving the reliability of the energy storage system 10.

[0140] Please refer to Figure 8 andFigure 9 In some embodiments, the fire protection device 300 includes a concentration sensor 360 for detecting the concentration of the fire extinguishing medium in the bin 100. The concentration sensor 360 is communicatively connected to the fire protection main unit 330, and the fire protection main unit 330 is configured to adjust the operating state of the air inlet mechanism 370, and the operating state of the air inlet mechanism 370 is associated with the concentration.

[0141] That the "fire protection main unit 330 is configured to adjust the operating state of the air inlet mechanism 370, and the operating state of the air inlet mechanism 370 is associated with the concentration" means that the fire protection main unit 330 can open or close the air inlet mechanism 370 according to the concentration of the fire extinguishing medium in the bin 100 detected by the concentration sensor 360.

[0142] Since the operating state of the air inlet mechanism 370 is also associated with the first data, the fire protection main unit 330 can open or close the air inlet mechanism 370 according to the first data and the concentration of the fire extinguishing medium in the bin 100 detected by the concentration sensor 360.

[0143] In some embodiments, the fire protection main unit 330 can close the air inlet mechanism 370 according to the concentration of the fire extinguishing medium in the bin 100 detected by the concentration sensor 360. Optionally, the fire protection main unit 330 is configured to close the air inlet mechanism 370 when the concentration of the fire extinguishing medium reaches a first threshold.

[0144] The concentration sensor 360 can detect the concentration of the fire extinguishing medium in the bin 100. When the concentration of the fire extinguishing medium in the bin 100 reaches the first threshold, it indicates that the concentration of the fire extinguishing medium in the bin 100 is relatively high. At this time, the fire protection main unit 330 can control the air inlet mechanism 370 and the first fire protection mechanism 310 to close, and no longer supply the fire extinguishing medium into the bin 100, so as to keep the concentration of the fire extinguishing medium in the bin 100 above the first threshold, having a good fire protection effect. In this way, both the cost of fire protection can be reduced, and the energy storage system 10 can have better reliability.

[0145] Please refer to Figure 2 、 Figure 10 and Figure 11 , Figure 10 which is a schematic structural diagram of the second fire protection mechanism 320 provided in some embodiments of the present application. Figure 11Schematic block diagram of a fire protection device 300 provided for some other embodiments of the present application. In some embodiments, the second fire protection mechanism 320 includes a second medium storage 321, a spray pipeline 322, and a second shut-off device 323. The second medium storage 321 is used to store an endothermic medium. The spray pipeline 322 is connected to the second medium storage 321. The second shut-off device 323 is provided on the spray pipeline 322. The spray pipeline 322 is used to supply the endothermic medium into the bin body 100 when the second shut-off device 323 is opened. The second shut-off device 323 is communicatively connected to the fire protection host 330. The fire protection host 330 is used to adjust the working state of the second shut-off device 323 to adjust the working state of the second fire protection mechanism 320. The working state of the second shut-off device 323 is associated with first data.

[0146] The second medium storage 321 is a container for storing an endothermic medium. The second medium storage 321 is provided inside the bin body 100. For example, the second medium storage 321 may include a tank body, a bottle body, etc.

[0147] The spray pipeline 322 is connected to the second medium storage 321. The endothermic medium stored in the second medium storage 321 can be sprayed into the bin body 100 through the spray pipeline 322.

[0148] The second shut-off device 323 is a valve body structure provided on the spray pipeline 322. When the second shut-off device 323 is opened, the second shut-off device 323 allows the second medium storage 321 to spray the endothermic medium into the bin body 100 through the spray pipeline 322. When the second shut-off device 323 is closed, the second shut-off device 323 prevents the second medium storage 321 from spraying the endothermic medium into the bin body 100 through the spray pipeline 322. That is, when the second shut-off device 323 is opened, the second fire protection mechanism 320 is opened. When the second shut-off device 323 is closed, the second fire protection mechanism 320 is closed.

[0149] The second shut-off device 323 can be a butterfly valve, a ball valve, an electric valve, etc.

[0150] "The fire protection host 330 is used to adjust the working state of the second shut-off device 323 to adjust the working state of the second fire protection mechanism 320. The working state of the second shut-off device 323 is associated with first data" means that the fire protection host 330 can open or close the second shut-off device 323 according to the first data to open or close the second fire protection mechanism 320.

[0151] It should be noted that the working state of the second throttling device 323 can be associated only with the first data. In this case, the fire control host 330 can open or close the second throttling device 323 only according to the first data. The working state of the second throttling device 323 can also be associated with other data. In this case, the fire control host 330 can open or close the second throttling device 323 according to the first data and other data.

[0152] The fire control host 330 can automatically control the opening of the second throttling device 323 according to the first data obtained by the fire sensor 340, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0153] Please refer to Figure 2 、 Figure 10 and Figure 11 , in some embodiments, the energy storage system 10 includes a plurality of battery clusters 200, and each battery cluster 200 includes a plurality of battery devices 210 stacked along the height direction. The spray pipeline 322 includes a plurality of second pipe bodies 3221, and at least one second pipe body 3221 is correspondingly arranged for each battery cluster 200. Each second pipe body 3221 is provided with a second throttling device 323, and each second pipe body 3221 is used to provide an endothermic medium to the corresponding battery cluster 200 when the second throttling device 323 is opened.

[0154] The energy storage system 10 may include two battery clusters 200, three battery clusters 200, four battery clusters 200 or more battery clusters 200. The plurality of battery clusters 200 may be arranged along the length direction of the storage body 100, and the plurality of battery clusters 200 may also be arranged along the width direction of the storage body 100.

[0155] Please refer to Figure 2 , in the embodiment shown in the figure, the plurality of battery clusters 200 are arranged along the length direction of the storage body 100.

[0156] Each battery cluster 200 includes a plurality of battery devices 210, and the plurality of battery devices 210 are arranged along the height direction of the storage body 100.

[0157] The spray pipeline 322 includes a plurality of second pipe bodies 3221, and the number of the second pipe bodies 3221 is greater than or equal to the number of the battery clusters 200, so that at least one second pipe body 3221 is correspondingly arranged for each battery cluster 200. In other words, at least one second pipe body 3221 of each battery cluster 200 can provide an endothermic medium to it.

[0158] It should be noted that different battery clusters 200 may be correspondingly provided with different numbers of second tubes 3221. For example, one of the multiple battery clusters 200 is correspondingly provided with one second tube 3221, and only this second tube 3221 can provide the heat absorption medium to this battery cluster 200. Another battery cluster 200 among the multiple battery clusters 200 is correspondingly provided with two second tubes 3221, and both of the two second tubes 3221 can provide the heat absorption medium to this battery cluster 200.

[0159] In addition, one second tube 3221 may be correspondingly provided for one battery cluster 200. In this case, this second tube 3221 can only provide the heat absorption medium to one battery cluster 200. One second tube 3221 may also be correspondingly provided for multiple battery clusters 200. In this case, this second tube 3221 can provide the heat absorption medium to multiple battery clusters 200.

[0160] Please refer to Figure 2 , in Figure 2 the illustrated embodiment, each battery cluster 200 is correspondingly provided with two second tubes 3221. Along the length direction of the bin body, the two second tubes 3221 are respectively arranged on both sides of the corresponding battery cluster 200.

[0161] Each second tube 3221 is provided with a second throttling device 323. Each second tube 3221 is used to provide the heat absorption medium to the corresponding battery cluster 200 when the second throttling device 323 is opened, and each second tube 3221 is used to stop providing the heat absorption medium to the corresponding battery cluster 200 when the second throttling device 323 is closed.

[0162] Each battery cluster 200 is correspondingly provided with at least one second tube 3221. When the second throttling device 323 of the second tube 3221 corresponding to this battery cluster 200 is opened, the second tube 3221 can spray the heat absorption medium to the corresponding battery cluster 200. In this way, when only one battery cluster 200 among the multiple battery clusters 200 has a thermal runaway of the battery device 210, the second throttling device 323 on the second tube 3221 corresponding to this battery cluster 200 can be opened, so as to directionally spray the heat absorption medium to the battery cluster 200 with thermal runaway, which is beneficial to improving the accuracy of fire fighting and reducing the fire fighting cost.

[0163] Please refer to Figure 2 , Figure 10 , Figure 11 , Figure 12 and Figure 13 , Figure 12 is a schematic block diagram of the battery device 210 provided in some embodiments of the present application. Figure 13Schematic diagram of the connection between multiple battery devices 210 and sub-control modules 400 provided in some embodiments of the present application. In some embodiments, the battery device 210 includes battery cells 211 and a battery monitoring unit 212, and the battery monitoring unit 212 is used to obtain second data of the battery cells 211. The energy storage system 10 includes multiple sub-control modules 400, and one sub-control module 400 is correspondingly arranged for each battery cluster 200. Each sub-control module 400 is communicatively connected to the battery monitoring units 212 of multiple battery devices 210 in the corresponding battery cluster 200, and each sub-control module 400 is communicatively connected to the fire control host 330. The operating state of the second cut-off device 323 is associated with the first data and the second data.

[0164] The battery monitoring unit 212 can be a device for monitoring the battery cells 211 in the battery device 210. The battery monitoring unit 212 is used to obtain second data of the battery cells 211, which may mean that the battery monitoring unit 212 can collect the voltage and temperature data of the battery cells 211 in the battery device 210, and it can be determined whether the battery cells 211 of the battery device 210 are in thermal runaway according to the second data.

[0165] The sub-control module 400 can serve as the battery management unit of the battery cluster 200 formed by multiple battery devices 210, and is used to monitor and manage the battery cluster 200. The sub-control module 400 can monitor information such as the current, voltage, power or temperature of the battery cluster 200. For example, it can control the charge and discharge current, voltage, etc. of the battery cluster 200. The sub-control module 400 may include an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch and other modules.

[0166] The energy storage system 10 includes multiple sub-control modules 400, and the sub-control modules 400 and the battery clusters 200 are in one-to-one correspondence, that is, each sub-control module 400 correspondingly monitors and manages one battery cluster 200. Each sub-control module 400 is communicatively connected to the battery monitoring units 212 of multiple battery devices 210 in one battery cluster 200 that it monitors and manages, so as to collect the second data collected by the battery monitoring units 212 of multiple battery devices 210.

[0167] A plurality of sub-control modules 400 are all communicatively connected to the fire control host 330. In some embodiments, the plurality of sub-control modules 400 send the second data collected by the battery monitoring units 212 of the plurality of battery devices 210 they have aggregated to the fire control host 330. The fire control host 330 opens or closes the second shut-off device 323 on the second pipe body 3221 corresponding to the battery cluster 200 that has experienced thermal runaway according to the first data and the second data. In other embodiments, the sub-control module 400 is communicatively connected to the second shut-off device 323. The fire control host 330 sends a signal to the sub-control module 400 according to the first data. The sub-control module 400 opens or closes the second shut-off device 323 on the second pipe body 3221 corresponding to the battery cluster 200 that has experienced thermal runaway according to the signal sent by the fire control host 330 and the second data.

[0168] One sub-control module 400 is correspondingly arranged for each battery cluster 200. The sub-control module 400 can serve as the battery management unit of the battery cluster 200 and is used to monitor and manage the battery cluster 200. Each sub-control module 400 is communicatively connected to the battery monitoring units 212 of the plurality of battery devices 210 of the corresponding battery cluster 200, so as to obtain the second data of the battery cells 211 of the plurality of battery devices 210 of the corresponding battery cluster 200. Whether the battery device 210 has experienced thermal runaway can be judged according to the second data. In this way, the fire control host 330 can open the second shut-off device 323 on the second pipe body 3221 corresponding to the battery cluster 200 according to the first data and the second data, so as to spray the heat-absorbing medium towards the battery cluster 200 that has experienced thermal runaway in a targeted manner, which is beneficial to improving the accuracy of fire protection and reducing the fire protection cost.

[0169] In some embodiments, the fire sensor 340 includes at least one of a temperature sensor, a smoke detector, and a combustible gas detector.

[0170] The fire sensor 340 may only include a temperature sensor, a smoke detector, or a combustible gas detector. The fire sensor 340 may also only include a temperature sensor and a smoke detector, may also only include a temperature sensor and a combustible gas detector, may also only include a smoke detector and a combustible gas detector. The fire sensor 340 may also include a temperature sensor, a smoke detector, and a combustible gas detector.

[0171] The temperature detector can detect abnormal temperature changes inside the bin 100. When the temperature exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host 330 controls the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 to open, so as to provide a fire-extinguishing medium and a heat-absorbing medium to the bin 100, realizing fire extinguishing and improving the reliability of the energy storage system 10. The smoke detector can detect characteristics such as the smoke concentration, color, and smell inside the bin 100. When the smoke concentration exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host 330 opens the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 to provide a fire-extinguishing medium and a heat-absorbing medium to the bin 100, realizing fire extinguishing and improving the reliability of the energy storage system 10. The combustible gas detector can detect the concentration of combustible gas inside the bin 100. When the concentration of combustible gas exceeds the normal range and reaches the second threshold, it can indicate the occurrence of a fire. The fire control host 330 controls the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 to open, so as to provide a fire-extinguishing medium and a heat-absorbing medium to the bin 100, realizing fire extinguishing and improving the reliability of the energy storage system 10. When the fire sensor 340 includes a temperature detector, a smoke detector, and a combustible gas detector, the temperature information, smoke characteristic information, and combustible gas concentration can be combined to accurately judge the fire development stage, thereby reducing the risk of false fire alarms, enabling the fire control host 330 to effectively and accurately control the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320 to open, providing a fire-extinguishing medium and a heat-absorbing medium to the bin 100, realizing fire extinguishing and improving the reliability of the energy storage system 10.

[0172] Please refer to Figure 14 , Figure 14 which is a schematic block diagram of the battery device 210 provided for some other embodiments of the present application. In some embodiments, the fire-fighting device 300 includes an alarm 380, and the alarm 380 is communicatively connected to the fire control host 330. The fire control host 330 is used to adjust the working state of the alarm 380, and the working state of the alarm 380 is associated with the first data.

[0173] The alarm 380 is an electronic product that uses forms such as sound, light, and air pressure to remind or warn us to take certain actions to prevent or avoid the consequences caused by the occurrence of an event.

[0174] Optionally, the alarm 380 can be an audible and visual alarm, a pure sound alarm, a pure light signal alarm, or a graphic display alarm, etc.

[0175] The alarm 380 is communicatively connected to the fire control host 330, and the fire control host 330 can control the alarm 380 to start or stop. Specifically, the fire control host 330 can start the alarm 380 according to the first data, so that the alarm 380 issues an alarm to prompt the surrounding personnel to evacuate.

[0176] The fire control host 330 can activate the alarm 380 based on the first data to emit an alarm signal, prompting the surrounding personnel to evacuate, which is beneficial to improving the reliability of the energy storage system 10.

[0177] In some embodiments, the fire control host 330 is configured to activate the alarm 380 when the first data is greater than the second threshold, and immediately open the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320. For example, when the first data is greater than the second threshold, the fire control host 330 turns on the alarm 380, the first throttling device 313, the exhaust mechanism 350, the intake mechanism 370, and the second throttling device 323 on the second pipe body 3221 corresponding to the battery cluster 200 where thermal runaway occurs. The fire control host 330 is configured to close the first throttling device 313, the exhaust mechanism 350, the intake mechanism 370, and the second throttling device 323 on the second pipe body 3221 corresponding to the battery cluster 200 where thermal runaway occurs when the concentration of the fire extinguishing medium reaches the first threshold.

[0178] In other embodiments, the fire control host 330 is configured to activate the alarm 380 when the first data is greater than the second threshold, and delay opening the first fire-fighting mechanism 310 and the second fire-fighting mechanism 320. For example, when the first data is greater than the second threshold, the fire control host 330 activates the alarm 380, and the alarm 380 emits a warning signal for a second preset time. After the second preset time, the fire control host 330 opens the first throttling device 313, the exhaust mechanism 350, the intake mechanism 370, and the second throttling device 323 on the second pipe body 3221 corresponding to the battery cluster 200 where thermal runaway occurs. The fire control host 330 is configured to close the first throttling device 313, the exhaust mechanism 350, the intake mechanism 370, and the second throttling device 323 on the second pipe body 3221 corresponding to the battery cluster 200 where thermal runaway occurs when the concentration of the fire extinguishing medium reaches the first threshold.

[0179] The fire control host 330 can activate the alarm 380 based on the first data to emit an alarm signal, prompting the surrounding personnel to evacuate, which is beneficial to improving the reliability of the energy storage system 10.

[0180] Please refer to Figure 2 , in some embodiments, the first fire-fighting mechanism 310 includes a first medium storage 311 and a first pipe body 312. The first medium storage 311 is used to store the fire extinguishing medium, and the first pipe body 312 connects the first medium storage 311 and the cabin 100.

[0181] Both the first medium storage 311 and the first pipe body 312 are disposed outside the cabin 100. The first pipe body 312 connects the first medium storage 311 and the cabin 100, so that the fire extinguishing medium stored in the first medium storage 311 can be provided to the cabin 100 through the first pipe body 312, thereby realizing the fire protection of the cabin 100.

[0182] Please refer to Figure 2 , in some embodiments, the first pipe body 312 is provided with a first throttling device 313.

[0183] When the first throttling device 313 is open, the first throttling device 313 allows the first medium reservoir 311 to supply the fire extinguishing medium to the bin body 100 through the first pipe body 312. When the first throttling device 313 is closed, the first throttling device 313 prevents the first medium reservoir 311 from supplying the fire extinguishing medium to the bin body 100 through the first pipe body 312. That is, when the first throttling device 313 is open, the first fire protection mechanism 310 is open, and when the first throttling device 313 is closed, the first fire protection mechanism 310 is closed.

[0184] Please refer to Figure 2 and Figure 10 , in some embodiments, the second fire protection mechanism 320 includes a second medium reservoir 321 and a spray pipeline 322. The second medium reservoir 321 is used to store the heat absorption medium, and the spray pipeline 322 is connected to the second medium reservoir 321. The spray pipeline 322 is used to supply the heat absorption medium into the bin body 100.

[0185] Both the second medium reservoir 321 and the spray pipeline 322 are arranged inside the bin body 100. The spray pipeline 322 is connected to the second medium reservoir 321. The heat absorption medium stored in the second medium reservoir 321 can be sprayed into the bin body 100 through the spray pipeline 322, thereby realizing the fire protection of the bin body 100.

[0186] Please refer to Figure 2 and Figure 10 , in some embodiments, the energy storage system 10 includes a plurality of battery clusters 200, and each battery cluster 200 includes a plurality of battery devices 210 stacked in the height direction. The spray pipeline 322 includes a plurality of second pipe bodies 3221. At least one second pipe body 3221 is correspondingly arranged for each battery cluster 200, and each second pipe body 3221 is used to release the heat absorption medium to the corresponding battery cluster 200.

[0187] At least one second pipe body 3221 is correspondingly arranged for each battery cluster 200, and the second pipe body 3221 can spray the heat absorption medium to the corresponding battery cluster 200. In this way, when a battery device 210 in the battery cluster 200 has a thermal runaway, multiple first pipe bodies 312 can spray to multiple battery clusters 200 simultaneously, or some of the multiple first pipe bodies 312 can spray the heat absorption medium to the battery cluster 200 where the thermal runaway occurs directionally.

[0188] Please refer to Figure 2 and Figure 10 , in some embodiments, each second pipe body 3221 is provided with a second throttling device 323.

[0189] When the second shut-off device 323 is opened, the second shut-off device 323 allows the second medium reservoir 321 to spray the heat-absorbing medium into the bin 100 through the spray pipeline 322. When the second shut-off device 323 is closed, the second shut-off device 323 prevents the second medium reservoir 321 from spraying the heat-absorbing medium into the bin 100 through the spray pipeline 322. That is, when any one of the second shut-off devices 323 is opened, the second fire-fighting mechanism 320 is opened, and when all the second shut-off devices 323 are closed, the second fire-fighting mechanism 320 is closed.

[0190] Please refer to Figure 2 and Figure 10 In some embodiments, as shown in

[0191] and Figure 2 , the second fire-fighting mechanism 320 is located above the plurality of battery clusters 200. The plurality of battery clusters 200 are arranged in a first direction, and the plurality of second pipe bodies 3221 are arranged in the first direction. The first direction is perpendicular to the height direction.

[0192] The statement that "the plurality of battery clusters 200 are arranged in the first direction and the plurality of second pipe bodies 3221 are arranged in the first direction" means that the arrangement directions of the plurality of battery clusters 200 and the plurality of second pipe bodies 3221 are the same.

[0193] The second fire-fighting mechanism 320 is located above the plurality of battery clusters 200, that is, the position of the second fire-fighting mechanism 320 is higher than the position of the battery clusters 200. In embodiments where the second fire-fighting mechanism 320 includes the second medium reservoir 321 and the spray pipeline 322, both the second medium reservoir 321 and the spray pipeline 322 are located above the plurality of battery clusters 200.

[0194] By arranging the second fire-fighting mechanism 320 above the plurality of battery clusters 200, when the second fire-fighting mechanism 320 sprays the heat-absorbing medium, the heat-absorbing medium can act on all the battery devices 210 of the battery clusters 200, realizing fire protection for all the battery devices 210 of the battery clusters 200, which is beneficial to improving the reliability of the energy storage system 10.

[0195] Please refer to Figure 2 and Figure 10 , in some embodiments, a nozzle 324 is provided at one end of the second pipe body 3221 close to the battery cluster 200. In the projection plane perpendicular to the height direction, the orthographic projection of the nozzle 324 and the orthographic projection of the battery cluster 200 do not overlap.

[0196] The nozzle 324 is the main component for the spray pipeline 322 to achieve spraying. One end of the second pipe body 3221 close to the battery cluster 200 is provided with the nozzle 324, and the second pipe body 3221 sprays the heat absorption medium towards the battery cluster 200 corresponding to the second pipe body 3221 through the nozzle 324.

[0197] Viewed along the height direction of the bin body 100, the positions of the nozzles 324 and the battery cluster 200 are staggered. Optionally, in the projection plane perpendicular to the height direction, the front projections of the nozzles 324 and the battery cluster 200 are alternately arranged along the first direction.

[0198] By making the front projection of the nozzle 324 in the projection plane perpendicular to the height direction not overlap with the front projection of the battery cluster 200 in the projection plane perpendicular to the height direction, the nozzle 324 can spray the heat absorption medium towards the battery cluster 200 from one side of the battery cluster 200, which is beneficial to making the heat absorption medium act on all the battery devices 210 of a battery cluster 200, achieving fire protection for all the battery devices 210 of the battery cluster 200, and is beneficial to improving the reliability of the energy storage system 10.

[0199] In some embodiments, the fire extinguishing medium includes at least one of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon.

[0200] Carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon have relatively stable chemical properties. They are neither flammable nor combustible, and are not likely to react chemically with the components inside the bin body 100. They can effectively inhibit combustion and have a good fire protection effect. Especially carbon dioxide, which not only has a low cost but is also easy to store. It can absorb heat during phase change, which is beneficial to reducing the temperature inside the bin body 100. In addition, carbon dioxide is relatively friendly to the environment.

[0201] In some embodiments, the heat absorption medium includes at least one of dry ice and liquid nitrogen.

[0202] Dry ice and liquid nitrogen can absorb a large amount of heat during phase change, making the temperature inside the bin body 100 drop rapidly. And after phase change, they are neither flammable nor combustible, and are not likely to react chemically with the components inside the bin body 100. They can effectively inhibit combustion and have a good fire protection effect.

[0203] Optionally, the fire extinguishing medium is carbon dioxide gas and the heat absorption medium is dry ice. Dry ice can absorb heat when it changes into carbon dioxide gas, thereby reducing the temperature inside the bin body 100. At the same time, the carbon dioxide gas will reduce the oxygen concentration near the flame, thus causing the flame to go out. The heat absorption medium forms the fire extinguishing medium after phase change, which can increase the concentration of the fire extinguishing medium inside the bin body 100 and achieve rapid fire extinguishing.

[0204] Please refer to Figure 15 ,Figure 15 This is a schematic diagram of the framework of the control system in the energy storage system 10 provided by some embodiments of the present application. In some embodiments, the energy storage system 10 further includes a control module 500. The battery device 210 includes battery cells 211 and a battery monitoring unit 212. The battery monitoring unit 212 is used to obtain the second data of the battery cells 211. The control module 500 is used to determine the operating state data of the energy storage system 10, and the operating state data of the energy storage system 10 is associated with the second data.

[0205] The battery monitoring unit 212 can be a device for monitoring the battery cells 211 in the battery device 210. The acquisition of the second data of the battery cells 211 in the battery device 210 by the battery monitoring unit 212 may mean that the battery monitoring unit 212 can acquire the voltage and temperature data of the battery cells 211 in the battery device 210, and these data are the basis for the battery management system to perform state monitoring and control.

[0206] The control module 500 can be a module in the energy storage system 10 for monitoring and managing the battery device 210, and it can serve as the management unit of the battery device 210 in the energy storage system 10. The control module 500 can be communicatively connected to the battery monitoring unit 212, and it can receive the second data and process it to determine the operating state data of the energy storage system 10 using the second data. The control module 500 can monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage system 10 to determine the operating state data of the energy storage system 10. As an example, the control module 500 includes modules such as an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a main battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0207] The operating state data of the energy storage system 10 determined by the control module 500 is associated with the second data of the battery cells 211 in the battery device 210 acquired by the battery monitoring unit 212, enabling the control module 500 to control the battery device 210, which is beneficial to reducing the number of settings of the control module 500, realizing greater utilization of the control module 500, and helping to reduce the cost of the energy storage system 10.

[0208] Please refer to Figure 15 , in some embodiments, the energy storage system 10 further includes a sub-control module 400, and the sub-control module 400 is communicatively connected between the battery monitoring unit 212 and the control module 500.

[0209] In some embodiments, the sub-control module 400 is configured to forward the second data. For example, the sub-control module 400 can forward information such as the current, voltage, power, state of charge, or temperature of the battery device 210 to the control module 500.

[0210] In other embodiments, the sub-control module 400 is configured to acquire and process the second data, and transfer the processed data to the control module 500. For example, the sub-control module 400 can process information such as the current, voltage, power, state of charge, or temperature of the battery device 210 and then forward it to the control module 500.

[0211] By providing the sub-control module 400 between the battery monitoring circuit and the control module 500, the control system of the energy storage system 10 has a three-level framework, reducing the length and complexity of the communication harness, reducing the sampling error, facilitating the improvement of the system reliability, and also reducing the requirements for the processor and the communication bus, which is conducive to reducing the overall cost of the system.

[0212] Please refer to Figure 16 , Figure 16 which is a schematic diagram of the framework of the control system in the energy storage system 10 provided in some other embodiments of the present application. In still other embodiments, the battery monitoring unit 212 is directly communicatively connected to the control module 500.

[0213] By directly communicatively connecting the battery monitoring unit 212 to the control module 500, the energy storage system 10 has a two-level framework, enabling the control module 500 to monitor key parameters such as the voltage, current, and temperature of the battery cells 211 in the battery device 210 in real time, facilitating the operation of the battery cells 211 in the battery device 210 in a safe state, reducing the possibility of overcharging, over-discharging, short-circuiting, etc., and being conducive to improving the reliability of the energy storage system 10.

[0214] Please refer to Figure 17 , Figure 17 which is a schematic block diagram of the fire-fighting method 20 provided in some embodiments of the present application. In some embodiments, the present application also provides a fire-fighting method 20, and the fire-fighting method 20 is used for fire-fighting of the energy storage system 10. The energy storage system 10 includes a storage bin 100 and a battery device 210, and the battery device 210 is accommodated in the storage bin 100. The fire-fighting method 20 includes: Exhaust step S100: exhausting the gas in the storage bin 100; First fire-fighting step S200: providing a fire-extinguishing medium to the storage bin 100 through a first fire-fighting mechanism 310 located outside the storage bin 100; Second fire-fighting step S300: providing an endothermic medium to the storage bin 100 through a second fire-fighting mechanism 320 located inside the storage bin 100.

[0215] In the exhaust air step S100, the fire control host 330 starts the exhaust air mechanism 350 to exhaust the gas in the bin body 100.

[0216] In the first fire fighting step S200, the fire control host 330 opens the first throttling device 313 to supply the fire extinguishing medium stored in the first medium storage 311 to the bin body 100.

[0217] In the second fire fighting step S300, the fire control host 330 opens the second throttling device 323 to supply the heat absorption medium stored in the second medium storage 321 to the battery cluster 200 where thermal runaway occurs.

[0218] It should be noted that the exhaust air step S100 can be executed before the first fire fighting step S200 and the second fire fighting step S300, the exhaust air step S100 can also be executed simultaneously with the first fire fighting step S200 and the second fire fighting step S200, and the exhaust air step S100 can also be executed after the first fire fighting step S200 and the second fire fighting step S300.

[0219] Please refer to Figure 18 , Figure 18 For the schematic block diagram of the fire fighting method 20 provided by some other embodiments of the present application. In some embodiments, after the exhaust air step S100, the first fire fighting step S200 and the second fire fighting step S300, the fire fighting method 20 further includes: Maintenance step S400: Keep the volume concentration of the fire extinguishing medium in the bin body 100 above the first threshold for a first preset time.

[0220] Since the bin body 100 is not completely sealed, the fire extinguishing medium in the bin body 100 will leak outwards. Therefore, in the maintenance step S400, the fire control host 330 will open and close the first throttling device 313, the second throttling device 323, the exhaust air mechanism 350 and the air inlet mechanism 370 according to the detection results of the concentration sensor 360, so as to keep the volume concentration of the fire extinguishing medium in the bin body 100 above the first threshold for a first preset time.

[0221] By keeping the concentration of the fire extinguishing medium in the bin body 100 above the first threshold for a first preset time, it has a good fire fighting effect, is beneficial to reducing the risk of secondary thermal runaway, and is beneficial to improving the reliability of the energy storage system 10.

[0222] Please refer to Figure 19 , Figure 19 For the schematic block diagram of the fire fighting method 20 provided by still some other embodiments of the present application. In some embodiments, the fire fighting method 20 further includes: Warning step S50: When the first data in the bin body 100 is greater than the second threshold, a warning signal is issued for a second preset time. After the second preset time, the exhaust step S100, the first fire-fighting step S200, and the second fire-fighting step S300 are executed.

[0223] In the warning step S50, when the first data is greater than the second threshold, the fire control host 330 activates the alarm 380, and the alarm 380 issues a warning signal for a second preset time. After the second preset time, the fire control host 330 opens the first throttling device 313, the second throttling device 323, the exhaust mechanism 350, and the intake mechanism 370.

[0224] When implementing the fire-fighting method 20, the warning step S50 is executed first, then the exhaust step S100, the first fire-fighting step S200, and the second fire-fighting step S300 are executed, and finally the maintenance step S400 is executed.

[0225] When the first data is greater than the second threshold, it indicates that a thermal runaway has occurred in the battery device 210 in the bin body 100. At this time, the fire control host 330 activates the alarm 380 to prompt the surrounding personnel to evacuate. After lasting for the second preset time, then executing the exhaust step and the fire-fighting step is beneficial to reducing the risk of danger to the surrounding personnel due to the action of the fire-fighting medium.

[0226] In some embodiments, the mass ratio of the fire-extinguishing medium to the heat-absorbing medium provided into the bin body 100 is 1:1 to 3:1.

[0227] The mass ratio of the fire-extinguishing medium to the heat-absorbing medium provided into the bin body 100 is 1:1, 1.2:1, 1.5:1, 1.8:1, 2:1, 2.2:1, 2.5:1, 2.8:1, 3:1, etc.

[0228] When the mass ratio of the fire-extinguishing medium to the heat-absorbing medium provided into the bin body 100 is 1:1 to 3:1, the mass ratio of the fire-extinguishing medium to the heat-absorbing medium is relatively appropriate. It can not only effectively absorb the heat in the bin body 100 and reduce the temperature in the bin body 100, but also have a good fire-extinguishing effect, which is beneficial to suppressing the further development of thermal runaway and improving the reliability of the energy storage system 10.

[0229] According to some embodiments of the present application, please refer to Figures 1 to 19 .

[0230] An embodiment of the present application provides an energy storage system 10. The energy storage system 10 includes a storage body 100, a battery device 210, and a fire protection device 300. The battery device 210 is accommodated in the storage body 100. The fire protection device 300 includes a first fire protection mechanism 310 and a second fire protection mechanism 320. The first fire protection mechanism 310 is disposed outside the storage body 100 and is configured to provide a fire extinguishing medium into the storage body 100. The second fire protection mechanism 320 is disposed inside the storage body 100 and is configured to provide an endothermic medium into the storage body 100. The fire protection device 300 includes the first fire protection mechanism 310 and the second fire protection mechanism 320. The first fire protection mechanism 310 is disposed outside the storage body 100 and can provide a fire extinguishing medium into the storage body 100. The fire extinguishing medium can extinguish the battery device 210 that has experienced thermal runaway and inhibit the further development of thermal runaway. The second fire protection mechanism 320 is disposed inside the storage body 100 and can provide an endothermic medium into the storage body 100. The endothermic medium can absorb the heat inside the storage body 100, quickly reduce the temperature inside the storage body 100, and inhibit the further development of thermal runaway. The first fire protection mechanism 310 and the second fire protection mechanism 320 cooperate to perform fire protection on the storage body 100, having a good fire protection effect, being able to quickly achieve fire extinguishing and explosion suppression, and being beneficial to improving the reliability of the energy storage system 10. Since the first fire protection mechanism 310 is disposed outside the storage body 100 and the second fire protection mechanism 320 is disposed inside the storage body 100, the first fire protection mechanism 310 is less likely to be affected by the fire compared to the second fire protection mechanism 320, and the first fire protection mechanism 310 can be stably triggered, which is beneficial to improving the reliability of the energy storage system 10. When the battery device 210 experiences thermal runaway, the second fire protection mechanism 320 can respond quickly compared to the first fire protection mechanism 310, quickly inhibit thermal runaway, and is beneficial to improving the reliability of the energy storage system 10.

[0231] The fire protection device 300 includes a fire protection host 330 and a fire sensor 340. The fire sensor 340 is arranged inside the bin body 100 and is used to obtain the first data inside the bin body 100. The fire sensor 340, the first fire protection mechanism 310, and the second fire protection mechanism 320 are all communicatively connected to the fire protection host 330. The fire protection host 330 is used to adjust the working states of the first fire protection mechanism 310 and the second fire protection mechanism 320, and the working states of the first fire protection mechanism 310 and the second fire protection mechanism 320 are associated with the first data. The fire sensor 340 can obtain the first data inside the bin body 100, and based on the first data, it can be determined whether the battery device 210 inside the bin body 100 has a thermal runaway. The fire sensor 340, the first fire protection mechanism 310, and the second fire protection mechanism 320 are all communicatively connected to the fire protection host 330. The fire protection host 330 can open or close the first fire protection mechanism 310 and the second fire protection mechanism 320 according to the first data, so as to realize the fire protection of the bin body 100, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0232] The first fire protection mechanism 310 includes a first medium storage 311, a first pipe body 312, and a first throttling device 313. The first medium storage 311 is used to store the fire extinguishing medium. The first pipe body 312 connects the first medium storage 311 and the bin body 100. The first throttling device 313 is arranged on the first pipe body 312. The first throttling device 313 is communicatively connected to the fire protection host 330. The fire protection host 330 is used to adjust the working state of the first throttling device 313 to adjust the working state of the first fire protection mechanism 310, and the working state of the first throttling device 313 is associated with the first data. When the first throttling device 313 is opened, the first throttling device 313 allows the first medium storage 311 to supply the fire extinguishing medium to the bin body 100 through the first pipe body 312. When the first throttling device 313 is closed, the first throttling device 313 prevents the first medium storage 311 from supplying the fire extinguishing medium to the bin body 100 through the first pipe body 312. That is, when the first throttling device 313 is opened, the first fire protection mechanism 310 is opened, and when the first throttling device 313 is closed, the first fire protection mechanism 310 is closed. The fire protection host 330 can automatically control the first throttling device 313 to open according to the first data obtained by the fire sensor 340, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0233] The silo body 100 is provided with an air exhaust port 110. The fire protection device 300 includes an air exhaust mechanism 350, and the air exhaust mechanism 350 is arranged corresponding to the air exhaust port 110. The air exhaust mechanism 350 is communicatively connected to the fire protection host 330. The fire protection host 330 is used to adjust the working state of the air exhaust mechanism 350, and the working state of the air exhaust mechanism 350 is associated with the first data. When the air exhaust mechanism 350 is opened, the air exhaust mechanism 350 can quickly discharge the oxygen and combustible gas in the silo body 100 out of the silo body 100. On the one hand, it can reduce the concentration of oxygen and combustible gas in the silo body 100, thereby reducing the risk of further development of thermal runaway. On the other hand, it can create a negative pressure in the silo body 100, facilitating the entry of the fire extinguishing medium into the silo body 100.

[0234] The second fire protection mechanism 320 includes a second medium storage 321, a spray pipeline 322, and a second throttling device 323. The second medium storage 321 is used to store the heat absorption medium. The spray pipeline 322 is connected to the second medium storage 321. The second throttling device 323 is arranged on the spray pipeline 322. The spray pipeline 322 is used to provide the heat absorption medium into the silo body 100 when the second throttling device 323 is opened. The second throttling device 323 is communicatively connected to the fire protection host 330. The fire protection host 330 is used to adjust the working state of the second throttling device 323 to adjust the working state of the second fire protection mechanism 320. The working state of the second throttling device 323 is associated with the first data. When the second throttling device 323 is opened, the second throttling device 323 allows the second medium storage 321 to spray the heat absorption medium into the silo body 100 through the spray pipeline 322. When the second throttling device 323 is closed, the second throttling device 323 prevents the second medium storage 321 from spraying the heat absorption medium into the silo body 100 through the spray pipeline 322. That is, when the second throttling device 323 is opened, the second fire protection mechanism 320 is opened, and when the second throttling device 323 is closed, the second fire protection mechanism 320 is closed. The fire protection host 330 can automatically control the second throttling device 323 to open according to the first data obtained by the fire sensor 340, which is beneficial to improving the degree of automation and the timeliness of fire protection, and thus beneficial to improving the reliability of the energy storage system 10.

[0235] The energy storage system 10 includes a plurality of battery clusters 200, and each battery cluster 200 includes a plurality of battery devices 210 stacked in the height direction. The spray pipeline 322 includes a plurality of second pipe bodies 3221. At least one second pipe body 3221 is correspondingly arranged for each battery cluster 200. Each second pipe body 3221 is provided with a second throttling device 323. Each second pipe body 3221 is configured to supply an endothermic medium to the corresponding battery cluster 200 when the second throttling device 323 is opened. At least one second pipe body 3221 is correspondingly arranged for each battery cluster 200. When the second throttling device 323 of the second pipe body 3221 corresponding to the battery cluster 200 is opened, the second pipe body 3221 can spray the endothermic medium to the corresponding battery cluster 200. In this way, when thermal runaway occurs in the battery devices 210 in only one of the plurality of battery clusters 200, the second throttling device 323 on the second pipe body 3221 corresponding to this battery cluster 200 can be opened, so as to directionally spray the endothermic medium to the battery cluster 200 where thermal runaway occurs, which is beneficial to improving the accuracy of fire protection and reducing the fire protection cost.

[0236] The battery device 210 includes a battery cell 211 and a battery monitoring unit 212. The battery monitoring unit 212 is configured to obtain second data of the battery cell 211. The energy storage system 10 includes a plurality of sub-control modules 400. One sub-control module 400 is correspondingly arranged for each battery cluster 200. Each sub-control module 400 is communicatively connected to the battery monitoring units 212 of the plurality of battery devices 210 in the corresponding battery cluster 200. Each sub-control module 400 is communicatively connected to the fire control host 330. The working state of the second throttling device 323 is associated with the first data and the second data. One sub-control module 400 is correspondingly arranged for each battery cluster 200. The sub-control module 400 can serve as the battery management unit of the battery cluster 200 and is configured to monitor and manage the battery cluster 200. Each sub-control module 400 is communicatively connected to the battery monitoring units 212 of the plurality of battery devices 210 in the corresponding battery cluster 200, so as to obtain the second data of the battery cells 211 of the plurality of battery devices 210 in the corresponding battery cluster 200. Whether the battery device 210 has thermal runaway can be judged according to the second data. In this way, the fire control host 330 can open the second throttling device 323 on the second pipe body 3221 corresponding to this battery cluster 200 according to the first data and the second data, so as to directionally spray the endothermic medium to the battery cluster 200 where thermal runaway occurs, which is beneficial to improving the accuracy of fire protection and reducing the fire protection cost.

[0237] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An energy storage system, characterized in that, Comprising: A storage body; A battery device, accommodated within the storage body; A fire protection device, including a first fire protection mechanism and a second fire protection mechanism. The first fire protection mechanism is disposed outside the storage body and is configured to supply a fire extinguishing medium into the storage body. The fire extinguishing medium is used to create an inert environment within the storage body. The second fire protection mechanism is disposed within the storage body and is configured to supply an endothermic medium into the storage body.

2. The energy storage system according to claim 1, wherein The fire protection device includes a fire protection host and fire protection sensors. The fire protection sensors are disposed within the storage body and are used to obtain first data within the storage body. The fire protection sensors, the first fire protection mechanism, and the second fire protection mechanism are all communicatively connected to the fire protection host. The fire protection host is used to adjust the working states of the first fire protection mechanism and the second fire protection mechanism. The working states of the first fire protection mechanism and the second fire protection mechanism are associated with the first data.

3. The energy storage system according to claim 2, wherein The first fire protection mechanism includes a first medium storage, a first pipe body, and a first throttling device. The first medium storage is used to store the fire extinguishing medium. The first pipe body connects the first medium storage and the storage body. The first throttling device is disposed on the first pipe body. The first throttling device is communicatively connected to the fire protection host. The fire protection host is used to adjust the working state of the first throttling device to adjust the working state of the first fire protection mechanism. The working state of the first throttling device is associated with the first data.

4. The energy storage system according to claim 3, wherein The storage body is provided with an air outlet. The fire protection device includes an exhaust mechanism, which is disposed corresponding to the air outlet. The exhaust mechanism is communicatively connected to the fire protection host. The fire protection host is used to adjust the working state of the exhaust mechanism. The working state of the exhaust mechanism is associated with the first data.

5. The energy storage system according to claim 4, wherein, The fire protection device includes a concentration sensor, which is used to detect the concentration of the fire extinguishing medium within the storage body. The concentration sensor is communicatively connected to the fire protection host. The fire protection host is used to adjust the working states of the exhaust mechanism and the first throttling device. The working states of the exhaust mechanism and the first throttling device are both associated with the concentration.

6. The energy storage system according to claim 4, wherein The storage body is provided with a medium inlet. The first fire protection mechanism is in communication with the medium inlet. Along the height direction of the storage body, the position of the air outlet is higher than the position of the medium inlet.

7. The energy storage system according to claim 6, wherein The storage body includes two oppositely disposed wall portions. The medium inlet is disposed on one of the wall portions, and the air outlet is disposed on the other wall portion.

8. The energy storage system according to claim 2, wherein, The storage body is provided with a medium inlet. The first fire protection mechanism is in communication with the medium inlet. The fire protection device includes an air inlet mechanism, which is disposed corresponding to the medium inlet. The air inlet mechanism is communicatively connected to the fire protection host. The fire protection host is used to adjust the working state of the air inlet mechanism. The working state of the air inlet mechanism is associated with the first data.

9. The energy storage system according to claim 8, wherein The fire protection device includes a concentration sensor for detecting the concentration of the fire extinguishing medium in the bin body. The concentration sensor is communicatively connected to the fire protection main machine, and the fire protection main machine is used to adjust the working state of the air inlet mechanism, and the working state of the air inlet mechanism is associated with the concentration.

10. The energy storage system according to claim 2, wherein The second fire protection mechanism includes a second medium storage, a spray pipeline, and a second shut-off device. The second medium storage is used to store the heat absorption medium. The spray pipeline is connected to the second medium storage, and the second shut-off device is arranged on the spray pipeline. The spray pipeline is used to provide the heat absorption medium to the bin body when the second shut-off device is opened. The second shut-off device is communicatively connected to the fire protection main machine, and the fire protection main machine is used to adjust the working state of the second shut-off device to adjust the working state of the second fire protection mechanism. The working state of the second shut-off device is associated with the first data.

11. The energy storage system according to claim 10, wherein The energy storage system includes a plurality of battery clusters. Each battery cluster includes a plurality of the battery devices stacked in the height direction. The spray pipeline includes a plurality of second pipe bodies. At least one second pipe body is correspondingly arranged for each battery cluster. Each second pipe body is provided with the second shut-off device, and each second pipe body is used to provide the heat absorption medium to the corresponding battery cluster when the second shut-off device is opened.

12. The energy storage system according to claim 11, wherein, The battery device includes a battery cell and a battery monitoring unit, and the battery monitoring unit is used to obtain the second data of the battery cell. The energy storage system includes a plurality of sub-control modules. One sub-control module is correspondingly arranged for each battery cluster. Each sub-control module is communicatively connected to the battery monitoring units of the plurality of battery devices in the corresponding battery cluster, and each sub-control module is communicatively connected to the fire protection main machine. The working state of the second shut-off device is associated with the first data and the second data.

13. The energy storage system according to claim 2, wherein The fire protection sensor includes at least one of a temperature sensor, a smoke detector, and a combustible gas detector.

14. The energy storage system according to claim 2, wherein, The fire protection device includes an alarm. The alarm is communicatively connected to the fire protection main machine, and the fire protection main machine is used to adjust the working state of the alarm. The working state of the alarm is associated with the first data.

15. The energy storage system according to claim 1, wherein The first fire protection mechanism includes a first medium storage and a first pipe body. The first medium storage is used to store the fire extinguishing medium. The first pipe body is connected to the first medium storage and the bin body.

16. The energy storage system according to claim 15, wherein The first pipe body is provided with a first shut-off device.

17. The energy storage system according to claim 1, wherein, The second fire protection mechanism includes a second medium storage and a spray pipeline. The second medium storage is used to store the heat absorption medium. The spray pipeline is connected to the second medium storage, and the spray pipeline is used to provide the heat absorption medium to the bin body.

18. The energy storage system according to claim 17, wherein The energy storage system includes a plurality of battery clusters. Each battery cluster includes a plurality of the battery devices stacked in the height direction. The spray pipeline includes a plurality of second pipe bodies. At least one second pipe body is correspondingly arranged for each battery cluster. Each second pipe body is used to release the heat absorption medium to the corresponding battery cluster.

19. The energy storage system according to claim 18, wherein Each of the second tube bodies is provided with a second throttling device.

20. The energy storage system according to claim 18, wherein The second fire-fighting mechanism is located above the plurality of battery clusters. The plurality of battery clusters are arranged in a first direction, and the plurality of second tube bodies are arranged in the first direction. The first direction is perpendicular to the height direction.

21. The energy storage system according to claim 20, wherein A nozzle is provided at one end of the second tube body close to the battery cluster. In the projection plane perpendicular to the height direction, the orthographic projection of the nozzle and the orthographic projection of the battery cluster do not overlap.

22. The energy storage system according to any one of claims 1-21, characterized in that, The fire-extinguishing medium includes at least one of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon.

23. The energy storage system according to any one of claims 1-21, characterized in that, The heat-absorbing medium includes at least one of dry ice and liquid nitrogen.

24. A fire-fighting method, characterized in that, For fire-fighting of an energy storage system, the energy storage system includes a storage body and a battery device, and the battery device is accommodated in the storage body. The fire-fighting method includes: Exhaust air step: exhausting the gas in the storage body; First fire-fighting step: providing a fire-extinguishing medium to the storage body through a first fire-fighting mechanism located outside the storage body; Second fire-fighting step: providing a heat-absorbing medium to the storage body through a second fire-fighting mechanism located inside the storage body.

25. The fire protection method according to claim 24, wherein, After the exhaust air step, the first fire-fighting step, and the second fire-fighting step, the fire-fighting method further includes: Maintaining step: maintaining the volume concentration of the fire-extinguishing medium in the storage body above a first threshold for a first preset time.

26. The fire protection method according to claim 24, wherein, The fire-fighting method further includes: Early warning step: when a first data in the storage body is greater than a second threshold, sending out an early warning signal for a second preset time. After the second preset time, performing the exhaust air step, the first fire-fighting step, and the second fire-fighting step. The first data is used to characterize whether the battery device has a thermal runaway.

27. The fire protection method according to claim 24, characterized in that, The mass ratio of the fire-extinguishing medium and the heat-absorbing medium provided into the storage body is 1:1 to 3:1.

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