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 battery device, a plurality of bin body sets and a fire fighting device, each bin body set comprises a bin body or a plurality of bin bodies stacked in the height direction, and the battery device is arranged in each bin body. The fire fighting device comprises a medium storage device and a pipeline system, the multiple bin body sets are arranged around the medium storage device in a surrounding mode, the pipeline system is connected with the medium storage device and all bin bodies, and the medium storage device is configured to be capable of supplying fire fighting media stored in the medium storage device to the bin bodies. A plurality of bin groups of the energy storage system are arranged around a medium storage device, so that the lengths of pipelines from the medium storage device to each bin group are approximately the same, the flow resistance of a fire-fighting medium to each bin group is approximately the same, and the flow of the fire-fighting medium provided by the medium storage device to the plurality of bin groups is approximately the same; therefore, the plurality of bin body groups have good fire fighting capability, and the reliability of the energy storage system can be improved.

Description

Technical Field

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

[0002] With the rapid development of technology, electric energy has become an indispensable energy source in people's production and life. In order 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 cyclic storage and release of electric energy, the energy storage system stores electric energy in the energy storage system by charging or discharging the energy storage system, or supplies the electric energy stored in the energy storage system to an electric device. The energy storage system is widely used in fields such as industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, and energy storage power stations. In the development of the energy storage system, in addition to improving the performance of the energy storage system, how to improve the reliability of the energy storage system is also an issue that cannot be ignored. Therefore, how to improve the reliability of the energy storage system is a technical problem that needs continuous improvement in energy storage technology. Summary of the Invention

[0003] An object of an embodiment of the present application is to provide an energy storage system and a fire protection method, which can improve the reliability of the energy storage system.

[0004] In a first aspect, an embodiment of the present application provides an energy storage system, which includes a battery device, a plurality of tank groups, and a fire protection device. Each tank group includes one tank or a plurality of tanks stacked in the height direction. The tank is a container, and the battery device is arranged in each tank. The fire protection device includes a medium storage and a pipeline system. The plurality of tank groups surround the medium storage, and the pipeline system connects the medium storage and all the tanks. The medium storage is configured to supply the fire protection medium stored therein to the tanks.

[0005] In the above technical solution, the energy storage system includes a plurality of tank groups. When each tank group includes one tank and the battery device is arranged in each tank, it is beneficial to improve the capacity of the energy storage system. When each tank group includes a plurality of tanks stacked in the height direction and the battery device is arranged in each tank, it is not only beneficial to improve the capacity of the energy storage system, but also beneficial to improve the area energy density of the energy storage system. The plurality of tank groups surround the medium storage, so that the lengths of the pipelines from the medium storage to each tank group are substantially the same, and the flow resistances of the fire protection medium to each tank group are substantially the same, which is beneficial to make the flow rates of the fire protection medium supplied by the medium storage to the plurality of tank groups substantially the same, so that each tank group has good fire protection capabilities, which is beneficial to improve the reliability of the energy storage system.

[0006] As an alternative technical solution of the embodiment of the present application, the energy storage system includes four groups of bins, and the four groups of bins are arranged in two rows and two columns. The two groups of bins in each row are arranged along a first direction, and the two groups of bins in each column are arranged along a second direction; along the first direction, there is a first channel between the two groups of bins in each row, and the first channels are arranged on both sides of the medium storage along the second direction; along the second direction, there is a second channel between the two groups of bins in each column, and the second channels are arranged on both sides of the medium storage along the first direction.

[0007] In the above technical solution, when the energy storage system includes four groups of bins, the four groups of bins are arranged in two rows and two columns. In this way, the projection of the energy storage system in the height direction is rectangular and relatively square, which can reduce the waste of space when installing multiple energy storage systems and improve the utilization rate of land. The second channels are arranged on both sides of the medium storage along the first direction, and the first channels are arranged on both sides of the medium storage along the second direction. On the one hand, it makes the medium storage roughly located in the middle of the four groups of bins, so that the lengths of the pipelines from the medium storage to each group of bins are roughly the same, and the flow resistance of the fire extinguishing medium to each group of bins is roughly the same, which is beneficial to making the flow rates of the fire extinguishing medium provided by the medium storage to multiple groups of bins roughly the same, so that multiple groups of bins all have good fire extinguishing capabilities and is beneficial to improving the reliability of the energy storage system. On the other hand, the first channel and the second channel can be used as isolation channels to prevent the fire of the bin group with thermal runaway from spreading to another bin group. On the other hand, the first channel and the second channel can be used as maintenance channels, which is convenient for maintaining the bin group.

[0008] As an alternative technical solution of the embodiment of the present application, the pipeline system includes a plurality of first pipe bodies, each bin is connected to one first pipe body, and each first pipe body is connected to the medium storage.

[0009] In the above technical solution, each bin is connected to one first pipe body, and the medium storage can supply the fire extinguishing medium to the corresponding bin through the first pipe body, which is convenient for adjusting the flow rates of the fire extinguishing medium flowing to multiple bins, and the cost is also relatively low.

[0010] As an alternative technical solution of the embodiment of the present application, a throttling structure is provided on at least one of the first pipe bodies.

[0011] In the above technical solution, by providing a throttling structure on the first pipe body, the throttling structure can adjust the flow rate of the fire extinguishing medium supplied by the medium storage to the bin corresponding to the first pipe body, which is beneficial to making the flow rates of the fire extinguishing medium provided by the medium storage to multiple bins roughly the same, so that multiple bins all have good fire extinguishing capabilities and is beneficial to improving the reliability of the energy storage system.

[0012] As an alternative technical solution of the embodiment of the present application, a first throttling device is provided on each of the first pipe bodies.

[0013] In the above technical solution, when the first throttling device is opened, the first throttling device allows the medium storage to supply the fire extinguishing medium to the corresponding bin through the first pipe body. When the first throttling device is closed, the first throttling device prevents the medium storage from supplying the fire extinguishing medium to the corresponding bin through the first pipe body. By providing the first throttling device on the first pipe body, the fire extinguishing medium can be supplied to the corresponding bin as needed, thereby achieving directional fire protection.

[0014] As an alternative technical solution of the embodiment of the present application, a throttling structure is provided on at least one of the first pipe bodies, and the throttling structure is located downstream of the first throttling device along the flow direction of the fire extinguishing medium in the first pipe body.

[0015] In the above technical solution, the throttling structure is arranged downstream of the first throttling device, so that the throttling structure can balance the influence of the first throttling structure on the flow rate when adjusting the flow rate, which is beneficial to making the flow rates of the fire extinguishing media supplied by the medium storage to multiple bins approximately the same, so that each of the multiple bins has good fire protection capabilities and is beneficial to improving the reliability of the energy storage system.

[0016] As an alternative technical solution of the embodiment of the present application, the fire protection device includes a fire protection host and a plurality of fire sensors, and each of the fire sensors is arranged in each bin; the plurality of fire sensors and the first throttling device are both communicatively connected to the fire protection host, the fire sensors are used to obtain first data in the bin, and the fire protection host is used to open the first throttling device corresponding to the fire sensor according to the first data.

[0017] In the above technical solution, by arranging fire sensors in each bin, the accuracy and timeliness of detecting whether the battery device in each bin has a thermal runaway can be improved. The plurality of fire sensors and the plurality of first throttling devices are both communicatively connected to the fire protection host. On the one hand, the fire protection of multiple bins is realized by one fire protection host, which is beneficial to reducing the volume occupation of the fire protection host, improving the energy density of the energy storage system, and reducing the cost of the fire protection device. On the other hand, the fire protection host can automatically control the opening of the first throttling device according to the first data of the fire sensors, 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.

[0018] As an alternative technical solution of the embodiment of the present application, the fire control host is configured to open the first throttling device corresponding to the fire sensor when the first data is greater than the first threshold, and open the first throttling device corresponding to the bin adjacent to the bin where the fire sensor is located when the first data is greater than the second threshold, and the second threshold is greater than the first threshold.

[0019] In the above technical solution, when the first data is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device in the bin where the fire sensor is set. The fire control host controls the opening of the first throttling device on the first pipe connected to the bin, so as to supply fire extinguishing medium to the bin, thereby realizing the directional supply of fire extinguishing medium and suppressing the further development of thermal runaway. When the first data is greater than the second data, it indicates that the thermal runaway of the battery device in the bin where the fire sensor is set has been relatively serious. The fire control host controls the opening of the first throttling device on the first pipe connected to the bin adjacent to the bin, so as to supply fire extinguishing medium to the bin adjacent to the bin, reducing the risk of the thermal runaway of the bin spreading to the adjacent bin, which is beneficial to improving the reliability of the energy storage system.

[0020] 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.

[0021] In the above technical solution, the temperature detector can detect abnormal temperature changes in the bin. When the temperature exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host controls the opening of the first throttling device corresponding to the temperature sensor to supply fire extinguishing medium to the corresponding bin, 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. When the smoke concentration exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host controls the opening of the first throttling device corresponding to the smoke detector to supply fire extinguishing medium to the corresponding bin, 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. When the concentration of combustible gas exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host controls the opening of the first throttling device corresponding to the combustible gas detector to supply fire extinguishing medium to the corresponding bin, 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 opening of the first throttling device to supply fire extinguishing medium to the corresponding bin, realizing fire extinguishing and improving the reliability of the energy storage system.

[0022] As an alternative technical solution of the embodiment of the present application, the medium storage is provided with a second shut-off device, and the second shut-off device is communicatively connected to the fire control host. The fire control host is configured to open the second shut-off device according to the first data, and the medium storage is configured to provide the fire extinguishing medium to the plurality of first pipes when the second shut-off device is opened.

[0023] In the above technical solution, when the second shut-off device is opened, the second shut-off device can allow the medium storage to supply the fire extinguishing medium to the plurality of first pipes. When the second shut-off device is closed, the second shut-off device can prevent the medium storage from supplying the fire extinguishing medium to the plurality of first pipes. By providing the second shut-off device, it is beneficial to reduce the risk of fire extinguishing medium leakage and improve the reliability of the energy storage system.

[0024] As an alternative technical solution of the embodiment of the present application, the storage body is provided with an air outlet, the fire extinguishing device includes an exhaust mechanism, the exhaust mechanism is arranged corresponding to the air outlet, the exhaust mechanism is communicatively connected to the fire control host, and the fire control host is configured to open the exhaust mechanism corresponding to the fire sensor according to the first data.

[0025] In the above technical solution, when the exhaust mechanism is opened, the exhaust mechanism can quickly discharge the oxygen and combustible gas in the storage body from the storage body. On the one hand, it can reduce the concentration of oxygen and combustible gas in the storage body, thereby reducing the risk of further development of thermal runaway. On the other hand, it can create a negative pressure in the storage body, thereby facilitating the entry of the fire extinguishing medium into the storage body.

[0026] As an alternative technical solution of the embodiment of the present application, the fire extinguishing device includes a concentration sensor, the concentration sensor is configured to detect the concentration of the fire extinguishing medium in the storage body, the concentration sensor is communicatively connected to the fire control host, and the fire control host is configured to close the exhaust mechanism and the first shut-off device when the concentration reaches a third threshold.

[0027] In the above technical solution, the concentration sensor can detect the concentration of the fire extinguishing medium in the storage body. When the concentration of the fire extinguishing medium in the storage body reaches the third threshold, it indicates that the concentration of the fire extinguishing medium in the storage body is relatively high. At this time, the fire control host can control the exhaust mechanism and the first shut-off device to close, so that the exhaust mechanism no longer discharges the gas in the storage body to the outside, and the medium storage device no longer supplies the fire extinguishing medium to the storage body, keeping the concentration of the fire extinguishing medium in the storage body above the third threshold, which has a good fire extinguishing effect. In this way, it can not only reduce the cost of fire extinguishing, but also make the energy storage system have better reliability.

[0028] As an alternative technical solution of the embodiment of the present application, in the height direction of the bin body, the position of the air outlet is higher than the connection position of the first pipe body and the bin body.

[0029] In the above technical solution, generally speaking, the weight of the fire extinguishing medium is heavier than that of oxygen and combustible gas. By making the position of the air outlet higher than the connection position of the first pipe body and the bin body, it is easier for the exhaust mechanism to discharge oxygen and combustible gas from the bin body, which is beneficial to gradually fill the bin body with the fire extinguishing medium and improve the reliability of the energy storage system.

[0030] As an alternative technical solution of the embodiment of the present application, the bin body includes two oppositely arranged wall portions, the first pipe body is connected to one of the wall portions, and the air outlet is arranged on the other wall portion.

[0031] In the above technical solution, the first pipe body and the air outlet are respectively arranged on two oppositely arranged wall portions of the bin body, which is beneficial to make the fire extinguishing medium fill the bin body as much as possible to improve the fire extinguishing effect and the reliability of the energy storage system.

[0032] As an alternative technical solution of the embodiment of the present application, the fire fighting device includes an alarm, the alarm is communicatively connected to the fire fighting host, and the fire fighting host is used to activate the alarm according to the first data.

[0033] In the above technical solution, the fire fighting host can activate the alarm according to the first data to send out an alarm signal to prompt the surrounding personnel to evacuate, which is beneficial to improve the reliability of the energy storage system.

[0034] As an alternative technical solution of the embodiment of the present application, the fire fighting host is used to activate the alarm when the first data is greater than a first threshold, delay in opening the first throttling device corresponding to the fire sensor, and open the first throttling device corresponding to the bin body adjacent to the bin body where the fire sensor is located when the first data is greater than a second threshold, and the second threshold is greater than the first threshold.

[0035] In the above technical solution, when the first data is greater than the first threshold value, it indicates that a thermal runaway has occurred in the battery device inside the bin. At this time, the fire control host activates the alarm to prompt the evacuation of the surrounding personnel. After the alarm has been sounding for a period of time, the fire control host controls the opening of the first throttling device on the first pipe body connected to the bin, so as to supply fire extinguishing medium into the bin, thereby realizing the directional supply of the fire extinguishing medium and suppressing the further development of the thermal runaway. When the first data is greater than the second data, it indicates that the thermal runaway of the battery device in the bin where the fire sensor is set has been relatively serious. The fire control host controls the opening of the first throttling device on the first pipe body connected to the bin adjacent to this bin, so as to supply fire extinguishing medium into the bin adjacent to this bin, reducing the risk of the thermal runaway of this bin spreading to the adjacent bin, which is beneficial to improving the reliability of the energy storage system.

[0036] As an alternative technical solution of the embodiment of the present application, the first pipe body includes a pipe main body and a tapered section. The tapered section includes a first end and a second end. The pipe main body connects the medium storage and the first end, and the second end is connected to the bin. The area of the flow-through cross-section of the tapered section gradually increases along the direction from the first end to the second end.

[0037] In the above technical solution, the area of the flow-through cross-section of the pipe main body is small, which is beneficial to increasing the flow rate of the fire extinguishing medium, so that the fire extinguishing medium can be quickly transported to the tapered section. By making the area of the flow-through cross-section of the tapered section gradually increase along the direction from the first end to the second end, a flared opening is formed at the end of the first pipe body connected to the bin, so as to reduce the flow rate of the fire extinguishing medium and provide time for the phase change of the fire extinguishing medium.

[0038] As an alternative technical solution of the embodiment of the present application, the inner peripheral surface of the tapered section intersects with a first cross-section to form an intersection line. The first cross-section passes through the central axis of the tapered section, and the included angle between the intersection line and the central axis is α, satisfying: 15° ≤ α ≤ 25°.

[0039] In the above technical solution, when α ≥ 15°, with the same length of the tapered section, the increase amplitude of the area of the flow-through cross-section of the tapered section is relatively large, which can better reduce the flow rate of the fire extinguishing medium and provide time for the phase change of the fire extinguishing medium. When α ≤ 25°, with the same length of the tapered section, the increase amplitude of the area of the flow-through cross-section of the tapered section is not too large, which is beneficial to reducing the backwash force on the first pipe body after the phase change of the fire extinguishing medium, reducing the risk of damage to the first pipe body, and is beneficial to improving the stability of the first pipe body.

[0040] As an alternative technical solution of the embodiment of the present application, the pipe main body and the tapered section are detachably connected; or, the pipe main body and the tapered section are integrally formed.

[0041] In the above technical solution, when the pipe body is detachably connected to the tapered section, on the one hand, the pipe body and the tapered section can be manufactured separately, which is conducive to simplifying the manufacturing and reducing the manufacturing cost. Moreover, the tapered section can be replaced as needed to meet different requirements. On the other hand, when the tapered section is damaged, it can be replaced and repaired, reducing the maintenance cost. When the pipe body and the tapered section are integrally formed, the connection stability between the tapered section and the pipe body is better, and the fire-fighting medium is not easily leaked.

[0042] As an optional technical solution of the embodiment of the present application, the pipeline system includes a main pipe, and the main pipe connects the medium storage and a plurality of the first pipe bodies.

[0043] In the above technical solution, by providing a main pipe to connect the medium storage and a plurality of first pipe bodies, it is convenient to reduce the difficulty of pipeline layout and the cost of the pipeline system.

[0044] As an optional technical solution of the embodiment of the present application, the main pipe is provided with an overflow valve.

[0045] In the above technical solution, by providing an overflow valve in the main pipe, it can play a protective role in the pipeline system and reduce the risk of damage to the pipeline system.

[0046] As an optional technical solution of the embodiment of the present application, the first pipe body and the main pipe are detachably connected.

[0047] In the above technical solution, by detachably connecting the first pipe body and the main pipe, during transportation, the first pipe body and the main pipe can be disassembled to realize the transportation of the first pipe body and the main pipe together, reducing the transportation cost. During on-site assembly, the first pipe body and the main pipe are then connected together. In addition, when any one of the first pipe body and the main pipe is damaged, it can be replaced and repaired, thereby reducing the maintenance cost.

[0048] As an optional technical solution of the embodiment of the present application, the fire-fighting medium includes at least one of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon.

[0049] 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 easily chemically reacted with the components in the warehouse body, which can effectively inhibit combustion and have a good fire-fighting effect. Especially carbon dioxide, not only is it low in cost, but also is convenient for storage. It can absorb heat during phase change, which is conducive to reducing the temperature in the warehouse body. In addition, carbon dioxide is relatively friendly to the environment.

[0050] As an alternative technical solution of the embodiment of the present application, the silo group includes a plurality of silos stacked in the height direction, and the dimensions of the plurality of silos of the silo group in the height direction are all smaller than the dimensions of a standard container in the height direction.

[0051] In the above technical solution, when the dimensions of the plurality of silos of the silo group in the height direction are all smaller than the dimensions of a standard container in the height direction, the total weight of the components in the silo can be reduced, which is beneficial to improving the problem of overweight during transportation and reducing the transportation cost of the energy storage system.

[0052] As an alternative technical solution of the embodiment of the present application, the dimensions of the plurality of silos of the silo group in their length direction are all the same as the dimensions of a standard container in the length direction, and the dimensions of the plurality of silos of the silo group in their width direction are all the same as the dimensions of a standard container in the width direction.

[0053] In the above technical solution, by making the dimensions of the plurality of silos of the silo group in their length direction the same as the dimensions of a standard container in the length direction, and the dimensions of the plurality of silos of the silo group in their width direction the same as the dimensions of a standard container in the width direction, it is beneficial to match the existing transportation tools and lifting appliances for standard containers, reducing the transportation cost of the energy storage system, and thus reducing the use cost of the energy storage system.

[0054] In a second aspect, the embodiment of the present application further provides a fire-fighting method. The fire-fighting method is based on the above energy storage system, and the fire-fighting method includes: an exhaust step: exhausting the gas in the silo where thermal runaway occurs; a fire-fighting step: supplying the fire-fighting medium stored in the medium storage to the silo where thermal runaway occurs.

[0055] As an alternative technical solution of the embodiment of the present application, after the exhaust step and the fire-fighting step, the fire-fighting method further includes: a maintaining step: maintaining the volume concentration of the fire-fighting medium in the silo where thermal runaway occurs above a third threshold for a first preset time.

[0056] In the above technical solution, by maintaining the concentration of the fire-fighting medium in the silo above the third threshold for a first preset time, it has a good fire-fighting effect, which is beneficial to reducing the risk of secondary thermal runaway and improving the reliability of the energy storage system.

[0057] As an alternative technical solution of the embodiment of the present application, the fire-fighting method further includes: a warning step: when the first data in the silo is greater than a first threshold, sending a warning signal for a second preset time, and after the second preset time, executing the exhaust step and the fire-fighting step.

[0058] In the above technical solution, when the first data is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device inside the bin. At this time, the fire host starts the alarm to prompt the surrounding personnel to evacuate. After the second preset time has elapsed, the exhaust step and the fire extinguishing step are then executed, which helps to reduce the risk of danger to the surrounding personnel due to the action of the fire extinguishing medium.

[0059] As an alternative technical solution of the embodiment of the present application, in the fire extinguishing step, when the first data inside the bin is greater than the second threshold, the fire extinguishing medium stored in the medium storage is provided to the bin where the thermal runaway has occurred and the bin adjacent to the bin where the thermal runaway has occurred, and the second threshold is greater than the first threshold.

[0060] In the above technical solution, when the first data is greater than the second data, it indicates that the thermal runaway of the battery device in the bin where the fire sensor is set has been relatively serious. The fire extinguishing medium stored in the medium storage is provided to the bin where the thermal runaway has occurred and the bin adjacent to the bin where the thermal runaway has occurred, reducing the risk of the thermal runaway in this bin spreading to the adjacent bins, which helps to improve the reliability of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0062] Figure 1 Structural schematic diagram of an energy storage system provided by some embodiments of the present application; Figure 2 Internal structural schematic diagram of a bin provided by some embodiments of the present application; Figure 3 Structural schematic diagram of an energy storage system provided by some other embodiments of the present application; Figure 4 Top view schematic diagram of an energy storage system provided by some embodiments of the present application; Figure 5 Top view schematic diagram of an energy storage system provided by some other embodiments of the present application; Figure 6 Top view schematic diagram of an energy storage system provided by some other embodiments of the present application; Figure 7 Schematic block diagram of a fire protection device provided by some embodiments of the present application; Figure 8 Schematic block diagram of a fire protection device provided by some other embodiments of the present application; Figure 9 Schematic block diagram of a fire protection device provided in some other embodiments of the present application; Figure 10 Cross-sectional view of a bin body provided in some embodiments of the present application; Figure 11 Schematic block diagram of a fire protection device provided in still some other embodiments of the present application; Figure 12 Schematic block diagram of a fire protection device provided in yet some other embodiments of the present application; Figure 13 Cross-sectional view of a bin body provided in some other embodiments of the present application; Figure 14 Top view schematic diagram of an energy storage system provided in yet some other embodiments of the present application; Figure 15 Frame schematic diagram of a control system in an energy storage system provided in some embodiments of the present application; Figure 16 Frame schematic diagram of a control system in an energy storage system provided in some other embodiments of the present application; Figure 17 Schematic block diagram of a fire protection method provided in some embodiments of the present application; Figure 18 Schematic block diagram of a fire protection method provided in some other embodiments of the present application; Figure 19 Schematic block diagram of a fire protection method provided in still some other embodiments of the present application.

[0063] Icons: 10 - Energy storage system; 100 - Battery device; 200 - Bin body group; 210 - Bin body; 211 - Air exhaust port; 212 - Air inlet; 220 - First channel; 230 - Second channel; 300 - Fire protection device; 310 - Medium storage; 320 - Pipeline system; 321 - First pipe body; 3211 - Pipe main body; 3212 - Gradual change section; 32121 - First end; 32122 - Second end; 32123 - Intersecting line; 3213 - Central axis; 322 - Main pipe; 330 - Fire protection host; 340 - Fire sensor; 350 - Air exhaust mechanism; 360 - Concentration sensor; 370 - Alarm; 410 - Throttling structure; 420 - First throttling device; 430 - Second throttling device; 440 - Relief valve; 20 - Fire protection method; 910 - Control module; 920 - Sub-control module. Detailed implementation manners

[0064] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0065] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the ordinary meanings understood by those skilled in the art to which the embodiments of the present application belong.

[0066] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 on the embodiments of the present application.

[0067] In addition, technical terms such as "first" and "second" 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, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0068] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. 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 can be the communication inside two elements or the interaction relationship between two elements. 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.

[0069] In the description of the embodiments of the present application, unless otherwise clearly specified and 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" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0070] 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.

[0071] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0072] As an example, the battery cell assembly may 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 may be formed by bundling a plurality of battery cells with cable ties.

[0073] In some embodiments, a battery device may include one or more battery packs, and each battery pack may include one or more battery cell assemblies. As an example, a battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body, for example, by a fixing means. As another example, the battery device includes a plurality of battery packs, and the plurality of battery packs may be connected in series, in parallel, or in a hybrid connection.

[0074] 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. Here, "closed" means covered or closed, and it can be sealed or non-sealed. The first box body may be a top cover or a bottom plate.

[0075] 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.

[0076] In some embodiments, the plurality of 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 a plurality of battery packs, and the plurality of 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 a plurality of battery clusters, the plurality of battery clusters may be connected in series, in parallel, or in a hybrid connection.

[0077] The energy storage system can be used in an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, 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 a low electricity consumption period and provide electrical energy to relevant users or electrical equipment during a high electricity consumption period. The energy storage system provided by the embodiments of the present application can be any power system that requires an energy storage system.

[0078] In some embodiments, the energy storage system is an energy storage container or an energy storage cabinet.

[0079] 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.

[0080] 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.

[0081] 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 battery cells to each battery device through pipelines.

[0082] 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 may 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), and a fusion switch.

[0083] As an example, the control module may serve as the battery management unit of the energy storage system for monitoring and managing the energy storage system. The control module may 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 modules such as an insulation monitoring module IMM (Insulation Monitoring Module), a main battery management unit MBMU (Master Battery Management Unit), an Ethernet ETH (EtherNet), and a fiber optic conversion module.

[0084] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., for detecting, alarming, or extinguishing 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.

[0085] 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.

[0086] In the related art, a fire protection medium is supplied to multiple energy storage compartments through a medium storage device, thereby realizing the fire protection of multiple energy storage compartments. However, there are significant differences in the fire protection capabilities of multiple energy storage compartments. The fire protection capabilities of some energy storage compartments are poor, such that when the battery devices in the energy storage compartments experience thermal runaway, they cannot be timely extinguished, resulting in poor reliability of the energy storage system.

[0087] Through research, it is found that there are large differences in the flow rates of the fire extinguishing medium provided by the medium storage to multiple energy storage compartments, resulting in large differences in the fire extinguishing capabilities of multiple energy storage compartments.

[0088] In view of this, an embodiment of the present application provides an energy storage system, which includes a battery device, multiple compartment groups, and a fire extinguishing device. Each compartment group includes one compartment or multiple compartments stacked along the height direction, and a battery device is arranged in each compartment. The fire extinguishing device includes a medium storage and a pipeline system. The multiple compartment groups are arranged around the medium storage, and the pipeline system connects the medium storage and all compartments. The medium storage is configured to be able to supply the fire extinguishing medium it stores to the compartments.

[0089] The energy storage system includes multiple compartment groups. When each compartment group includes one compartment and a battery device is arranged in each compartment, it is beneficial to improve the capacity of the energy storage system. When each compartment group includes multiple compartments stacked along the height direction and a battery device is arranged in each compartment, it is not only beneficial to improve the capacity of the energy storage system, but also beneficial to improve the area energy density of the energy storage system. The multiple compartment groups are arranged around the medium storage, so that the lengths of the pipelines from the medium storage to each compartment group are approximately the same, and the flow resistances of the fire extinguishing medium to each compartment group are approximately the same, which is beneficial to making the flow rates of the fire extinguishing medium provided by the medium storage to multiple compartment groups approximately the same, so that multiple compartment groups all have good fire extinguishing capabilities, and is beneficial to improving the reliability of the energy storage system.

[0090] The energy storage system described in the embodiment 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), and 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.

[0091] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , 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 a schematic internal structure diagram of the compartment 210 provided by some embodiments of the present application. Figure 3 which is a schematic structural diagram of the energy storage system 10 provided by some other embodiments of the present application. Figure 4A top view 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, which includes a battery device 100, a plurality of bin groups 200, and a fire protection device 300. Each bin group 200 includes one bin 210 or a plurality of bins 210 stacked in the height direction, and the battery device 100 is arranged in each bin 210. The fire protection device 300 includes a medium storage 310 and a pipeline system 320. A plurality of bin groups 200 surround the medium storage 310, and the pipeline system 320 connects the medium storage 310 and all bins 210. The medium storage 310 is configured to supply the fire protection medium stored therein to the bins 210.

[0092] The energy storage system 10 may include two bin groups 200, three bin groups 200, four bin groups 200, five bin groups 200, or more bin groups 200. Each bin group 200 may include only one bin 210, and each bin group 200 may also include two bins 210, three bins 210, four bins 210, five bins 210, or more bins 210. When the bin group 200 includes a plurality of bins 210, the plurality of bins 210 are stacked in the height direction, which is beneficial to reducing the floor area of the energy storage system 10 and improving the area energy density of the energy storage system 10.

[0093] It should be noted that the number of bins 210 in the plurality of bin groups 200 is the same. Please refer to Figure 1 , in Figure 1 In the illustrated embodiment, the number of bins 210 in the plurality of bin groups 200 is 1. Please refer to Figure 3 , in Figure 3 In the illustrated embodiment, the number of bins 210 in the plurality of bin groups 200 is 2.

[0094] The bin 210 can form a hollow structure, and the hollow structure serves as an accommodation space for accommodating the components in the energy storage system 10 to protect these components. The bin 210 accommodating the battery device 100 means that the battery device 100 is located in the hollow structure formed by the bin 210. The battery device 100 located in the hollow structure of the bin 210 can be connected to the wall of the bin 210 by connecting components such as bolts, rivets, and connecting pins, or can be fixed to a storage rack first, and then the storage rack is connected to the wall of the bin 210 by connecting components such as bolts, rivets, and connecting pins, reducing the possibility of the battery device 100 moving due to shaking in the accommodation space of the bin 210, which is beneficial to reducing the possibility of damage to the battery device 100.

[0095] The medium storage 310 is a container for storing fire extinguishing medium. For example, the medium storage 310 may include a tank body, a bottle body, etc. The fire extinguishing medium can be gas, liquid or solid. The fire extinguishing medium may include water, foam, dry powder, carbon dioxide, clean gas, wet chemical extinguishing agent, aerosol, sand, etc.

[0096] The pipeline system 320 is a pipeline structure connecting the medium storage 310 and all the bins 210. The fire extinguishing medium stored in the medium storage 310 can be supplied to all the bins 210 through the pipeline system 320.

[0097] A plurality of bin groups 200 are arranged around the medium storage 310, so that the distances from the medium storage 310 to the plurality of bin groups 200 are approximately the same. The plurality of bin groups 200 can be arranged around the medium storage 310. For example, the plurality of bin groups 200 can be arranged in a circular array, and the medium storage 310 is arranged at the center of the circle corresponding to the circle.

[0098] When the energy storage system 10 includes three bin groups 200, the three bin groups 200 can be respectively arranged at the three vertices of an equilateral triangle, and the medium storage 310 can be arranged at the position where the midpoint of the equilateral triangle is located.

[0099] When the energy storage system 10 includes four bin groups 200, the four bin groups 200 can be respectively arranged at the four vertices of a rectangle, and the medium storage 310 can be arranged at the position where the intersection of the diagonals of the rectangle is located.

[0100] The energy storage system 10 includes a plurality of bin groups 200. When each bin group 200 includes one bin 210 and a battery device 100 is arranged in each bin 210, it is beneficial to increase the capacity of the energy storage system 10. When each bin group 200 includes a plurality of bins 210 stacked in the height direction and a battery device 100 is arranged in each bin 210, it is not only beneficial to increase the capacity of the energy storage system 10, but also beneficial to increase the area energy density of the energy storage system 10. A plurality of bin groups 200 are arranged around the medium storage 310, so that the lengths of the pipelines from the medium storage 310 to each bin group 200 are approximately the same, so that the flow resistance of the fire extinguishing medium to each bin group 200 is approximately the same, which is beneficial to make the flow rates of the fire extinguishing medium provided by the medium storage 310 to the plurality of bin groups 200 approximately the same, so that each of the plurality of bin groups 200 has good fire extinguishing ability, which is beneficial to improve the reliability of the energy storage system 10.

[0101] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, in some embodiments, the energy storage system 10 includes four groups of bins 200, and the four groups of bins 200 are arranged in two rows and two columns. The two groups of bins 200 in each row are arranged along a first direction, and the two groups of bins 200 in each column are arranged along a second direction. Along the first direction, there is a first channel 220 between the two groups of bins 200 in each row, and the first channels 220 are provided on both sides of the medium storage 310 along the second direction. Along the second direction, there is a second channel 230 between the two groups of bins 200 in each column, and the second channels 230 are provided on both sides of the medium storage 310 along the first direction.

[0102] The energy storage system 10 includes four groups of bins 200, and the four groups of bins 200 are arranged in a matrix. Specifically, the four groups of bins 200 are arranged in two rows and two columns. Each row of bins 200 contains two groups of bins 200 arranged along the first direction, and each column of bins 200 contains two groups of bins 200 arranged along the second direction. The first direction is perpendicular to the second direction.

[0103] Please refer to Figure 1 and Figure 4 , the first direction is the X direction shown in the figure, and the second direction is the Y direction shown in the figure.

[0104] Along the first direction, the two groups of bins 200 in each row are arranged at intervals, and a first channel 220 is formed between the two groups of bins 200 in each row.

[0105] Along the second direction, the two groups of bins 200 in each column are arranged at intervals, and a second channel 230 is formed between the two groups of bins 200 in each column.

[0106] The second channels 230 are provided on both sides of the medium storage 310 along the first direction, and the first channels 220 are provided on both sides of the medium storage 310 along the second direction. Then, the medium storage 310 is generally located at the middle position of the four groups of bins 200, so that the lengths of the pipelines from the medium storage 310 to each group of bins 200 are generally the same.

[0107] In other words, a first interval is formed between adjacent rows of bins 200, and the first interval includes the above two second channels 230. A second interval is formed between adjacent columns of bins 200, and the first interval and the second interval are arranged in a cross manner. The second interval includes the above two first channels 220. The first interval and the second interval have a common area, and the medium storage 310 is arranged in the common area.

[0108] When the energy storage system 10 includes four groups of bins 200, the four groups of bins 200 are arranged in two rows and two columns. In this way, the projection of the energy storage system 10 in the height direction is rectangular and relatively square, which can reduce the waste of space when installing multiple energy storage systems 10 and improve the utilization rate of land. Second channels 230 are provided on both sides of the medium storage 310 along the first direction, and first channels 220 are provided on both sides of the medium storage 310 along the second direction. On the one hand, the medium storage 310 is roughly located in the middle of the four groups of bins 200, so that the lengths of the pipelines from the medium storage 310 to each group of bins 200 are roughly the same, and the flow resistance of the fire extinguishing medium to each group of bins 200 is roughly the same, which is conducive to making the flow rates of the fire extinguishing medium provided by the medium storage 310 to the multiple groups of bins 200 roughly the same, so that the multiple groups of bins 200 all have good fire extinguishing capabilities and is conducive to improving the reliability of the energy storage system 10. On the other hand, the first channels 220 and the second channels 230 can serve as isolation channels to prevent the fire of the group of bins 200 where thermal runaway occurs from spreading to another group of bins 200. On the other hand, the first channels 220 and the second channels 230 can serve as maintenance channels, which is convenient for maintaining the group of bins 200.

[0109] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , in some embodiments, the pipeline system 320 includes a plurality of first pipe bodies 321, each bin 210 is connected to one first pipe body 321, and each first pipe body 321 is connected to the medium storage 310.

[0110] The pipeline system 320 includes a plurality of first pipe bodies 321, and the first pipe bodies 321 correspond to the bins 210 one by one. One end of each first pipe body 321 is directly connected to a bin 210, and the other end of each first pipe body 321 can be directly connected to the medium storage 310 or indirectly connected to the medium storage 310. When the first pipe body 321 is directly connected to the medium storage 310 and the bin 210, the fire extinguishing medium in the medium storage 310 can be directly provided to the bin 210 through the first pipe body 321. When the first pipe body 321 is indirectly connected to the medium storage 310 through an intermediate pipe body, the fire extinguishing medium in the medium storage 310 can be provided to the bin 210 through the intermediate pipe body and the first pipe body 321.

[0111] Each bin 210 is connected to one first pipe body 321, and the medium storage 310 can supply the fire extinguishing medium to the corresponding bin 210 through the first pipe body 321, which is convenient for adjusting the flow rate of the fire extinguishing medium flowing to the multiple bins 210, and the cost is also relatively low.

[0112] Please refer to Figure 5 , Figure 5A top view schematic diagram of the energy storage system 10 provided by some other embodiments of the present application. In some embodiments, a throttling structure 410 is provided on at least one first pipe body 321.

[0113] Among the multiple first pipe bodies 321, only one first pipe body 321 may be provided with a throttling structure 410, or two first pipe bodies 321 may be provided with a throttling structure 410, or more first pipe bodies 321 may be provided with a throttling structure 410. Of course, all the first pipe bodies 321 may also be provided with a throttling structure 410.

[0114] The throttling structure 410 is a structure for regulating the flow rate inside the first pipe body 321. For example, the area of the flow-through cross-section of the throttling structure 410 may be smaller than the area of the flow-through cross-section of the first pipe body 321, so as to reduce the flow rate flowing into the first pipe body 321.

[0115] In some embodiments, the throttling structure 410 is a throttling orifice plate provided on the first pipe body 321.

[0116] In some other embodiments, the throttling structure 410 is a flow control valve provided on the first pipe body 321. By adjusting the flow control valves on at least one first pipe body 321, the flow rates of the fire-fighting medium flowing into the multiple storage chambers 210 are balanced, so that the flow rates of the fire-fighting medium provided by the medium storage 310 to the multiple storage chambers 210 are substantially the same.

[0117] In some other embodiments, the throttling structure 410 is a flow-limiting hole formed inside the first pipe body 321.

[0118] By providing the throttling structure 410 on the first pipe body 321, the throttling structure 410 can regulate the flow rate of the fire-fighting medium supplied by the medium storage 310 to the storage chamber 210 corresponding to the first pipe body 321, which is beneficial to making the flow rates of the fire-fighting medium provided by the medium storage 310 to the multiple storage chambers 210 substantially the same, so that each of the multiple storage chambers 210 has good fire-fighting capabilities and is beneficial to improving the reliability of the energy storage system 10.

[0119] Please refer to Figure 6 , Figure 6 A top view schematic diagram of the energy storage system 10 provided by some other embodiments of the present application. In some embodiments, a first throttling device 420 is provided on each first pipe body 321.

[0120] The first throttling device 420 is a valve body structure for controlling the connection or disconnection between the first pipe body 321 and the storage chamber 210. When the first throttling device 420 is opened, the first pipe body 321 is connected to the storage chamber 210. When the first throttling device 420 is closed, the first pipe body 321 is disconnected from the storage chamber 210.

[0121] The first shut-off device 420 can be a butterfly valve, a ball valve, an electric valve, etc.

[0122] When the first shut-off device 420 is opened, the first shut-off device 420 allows the medium storage 310 to supply the fire extinguishing medium to the corresponding bin 210 through the first pipe body 321. When the first shut-off device 420 is closed, the first shut-off device 420 prevents the medium storage 310 from supplying the fire extinguishing medium to the corresponding bin 210 through the first pipe body 321. By providing the first shut-off device 420 on the first pipe body 321, the fire extinguishing medium can be supplied to the corresponding bin 210 as needed, thereby achieving directional fire protection.

[0123] Please refer to Figure 6 , in some embodiments, a throttling structure 410 is provided on at least one first pipe body 321. Along the flow direction of the fire extinguishing medium in the first pipe body 321, the throttling structure 410 is located downstream of the first shut-off device 420.

[0124] "Along the flow direction of the fire extinguishing medium in the first pipe body 321, the throttling structure 410 is located downstream of the first shut-off device 420" means that when the fire extinguishing medium flows in the first pipe body 321, it first passes through the first shut-off device 420 and then passes through the throttling structure 410. In other words, along the flow direction of the fire extinguishing medium in the first pipe body 321, the throttling structure 410 is closer to the bin 210 than the first shut-off device 420.

[0125] The throttling structure 410 is provided downstream of the first shut-off device 420, so that the throttling structure 410 can balance the influence of the first shut-off structure on the flow rate when adjusting the flow rate, which is beneficial to making the flow rates of the fire extinguishing media supplied by the medium storage 310 to the multiple bins 210 roughly the same, enabling the multiple bins 210 to all have good fire protection capabilities and being beneficial to improving the reliability of the energy storage system 10.

[0126] Please refer to Figure 6 and Figure 7 , Figure 7 is a schematic block diagram of the fire protection device 300 provided in some embodiments of the present application. In some embodiments, the fire protection device 300 includes a fire protection host 330 and multiple fire sensors 340. A fire sensor 340 is provided in each bin 210. The multiple fire sensors 340 and the first shut-off device 420 are both communicatively connected to the fire protection host 330. The fire sensor 340 is used to obtain the first data in the bin 210, and the fire protection host 330 is used to open the first shut-off device 420 corresponding to the fire sensor 340 according to the first data.

[0127] The fire sensor 340 is used to obtain the first data inside the bin body 210. The first data can be fire data, which can be understood as various phenomena and indicators that can reflect the existence and relevant information of a fire 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 210 for fire prevention. Exemplarily, the fire sensor includes a temperature sensor, which can be used to detect the ambient temperature inside the bin body 210, the temperature of the structural components inside the bin body 210, the temperature of the battery device 100 inside the bin body 210, etc. Exemplarily, the fire sensor 340 includes a combustible gas detector, which can detect the concentration of combustible gas inside the bin body 210 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.

[0128] The fire main unit 330 is used to control electrical components related to fire protection. Optionally, the fire main unit 330 can be communicatively connected to all the fire sensors 340 and all the first shut-off devices 420, and can supply electrical energy to the fire sensors 340.

[0129] Optionally, the fire main unit 330 is a control device, which can be arranged inside any bin body 210. For example, the fire main unit 330 is arranged inside the lowermost bin body 210 in a bin body group 200. By arranging the fire main unit 330 inside a bin body 210, the occupation of the internal space of the energy storage system 10 by the fire main unit 330 can be reduced, so that the energy storage system 10 can arrange more battery devices 100, which is conducive to the improvement of the energy density of the energy storage system 10.

[0130] "The fire main unit 330 is used to open the first shut-off device 420 corresponding to the fire sensor 340 according to the first data" can be: the fire sensor 340 is used to obtain the first data inside the bin body 210 and send the first data to the fire main unit 330, and the fire main unit 330 opens the first shut-off device 420 corresponding to the fire sensor 340 according to the first data, or the fire sensor 340 is used to obtain the first data inside the bin body 210 and send a first signal to the fire main unit 330 when the first data exceeds a first threshold, and the fire main unit 330 opens the first shut-off device 420 corresponding to the fire sensor 340 according to the first signal.

[0131] It should be noted that "opening the first throttling device 420 corresponding to the fire sensor 340" means opening the first throttling device 420 on the first pipe body 321 connected to the bin body 210 where the fire sensor 340 is arranged.

[0132] By arranging fire sensors 340 in each bin body 210, the accuracy and timeliness of detecting whether the battery device 100 in each bin body 210 has a thermal runaway can be improved. A plurality of fire sensors 340 and a plurality of first throttling devices 420 are both communicatively connected to the fire host 330. On the one hand, the fire control of a plurality of bin bodies 210 is realized through one fire host 330, which is beneficial to reducing the volume occupation of the fire host 330, improving the energy density of the energy storage system 10, and reducing the cost of the fire protection device 300. On the other hand, the fire host 330 can automatically control the opening of the first throttling device 420 according to the first data of 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.

[0133] In some embodiments, the fire host 330 is configured to open the first throttling device 420 corresponding to the fire sensor 340 when the first data is greater than the first threshold, and open the first throttling device 420 corresponding to the bin body 210 adjacent to the bin body 210 where the fire sensor 340 is located when the first data is greater than the second threshold. The second threshold is greater than the first threshold.

[0134] When the fire sensor 340 includes a temperature sensor, the fire host 330 is configured to open the first throttling device 420 corresponding to the fire sensor 340 when the temperature in the bin body 210 is greater than the first threshold. When the fire sensor 340 includes a smoke detector, the fire host 330 is configured to open the first throttling device 420 corresponding to the fire sensor 340 when the smoke concentration in the bin body 210 is greater than the first threshold. When the fire sensor 340 includes a combustible gas detector, the fire host 330 is configured to open the first throttling device 420 corresponding to the fire sensor 340 when the combustible gas concentration in the bin body 210 is greater than the first 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 exceeds the first threshold, the fire host 330 opens the first throttling device 420 corresponding to the fire sensor 340.

[0135] When the first data in the bin body 210 is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device 100 in the bin body 210. When the first data in the bin body 210 is greater than the second threshold, since the second threshold is greater than the first threshold, it indicates that the thermal runaway of the battery device 100 in the bin body 210 has been relatively serious.

[0136] The fire control host 330 is also used to open the first throttling device 420 corresponding to the bin 210 adjacent to the bin 210 where the fire sensor 340 is located when the first data is greater than the second threshold. For example, the bin 210 where the fire sensor 340 is located is the first bin, the bin 210 adjacent to the first bin is the second bin, and the first data in the first bin is greater than the second threshold. Then, the fire control host 330 not only needs to open the first throttling device 420 on the first pipe body 321 connected to the first bin, but also needs to open the first throttling device 420 on the first pipe body 321 connected to the second bin.

[0137] When the first data is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device 100 in the bin 210 where the fire sensor 340 is set. The fire control host 330 controls the first throttling device 420 on the first pipe body 321 connected to the bin 210 to open, so as to supply fire extinguishing medium into the bin 210, thereby realizing the directional supply of fire extinguishing medium and suppressing the further development of thermal runaway. When the first data is greater than the second data, it indicates that the thermal runaway of the battery device 100 in the bin 210 where the fire sensor 340 is set has been relatively serious. The fire control host 330 controls the first throttling device 420 on the first pipe body 321 connected to the bin 210 adjacent to the bin 210 to open, so as to supply fire extinguishing medium into the bin 210 adjacent to the bin 210, reducing the risk of the thermal runaway in the bin 210 spreading to the bin 210 adjacent to it, which is beneficial to improving the reliability of the energy storage system 10.

[0138] In some embodiments, the fire sensor 340 includes at least one of a temperature sensor, a smoke detector, and a combustible gas detector.

[0139] 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, or only include a temperature sensor and a combustible gas detector, or 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.

[0140] The temperature detector can detect abnormal temperature changes in the bin body 210. When the temperature exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host 330 controls the first throttling device 420 corresponding to the temperature sensor to open, so as to provide fire-fighting medium to the corresponding bin body 210, realize fire extinguishing, and improve the reliability of the energy storage system 10. The smoke detector can detect characteristics such as the smoke concentration, color, and smell in the bin body 210. When the smoke concentration exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host 330 controls the first throttling device 420 corresponding to the smoke detector to open, so as to provide fire-fighting medium to the corresponding bin body 210, realize fire extinguishing, and improve the reliability of the energy storage system 10. The combustible gas detector can detect the concentration of combustible gas in the bin body 210. When the concentration of combustible gas exceeds the normal range and reaches the first threshold, it can indicate the occurrence of a fire. The fire control host 330 controls the first throttling device 420 corresponding to the combustible gas detector to open, so as to provide fire-fighting medium to the corresponding bin body 210, realize fire extinguishing, and improve 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 throttling device 420 to open, so as to provide fire-fighting medium to the corresponding bin body 210, realize fire extinguishing, and improve the reliability of the energy storage system 10.

[0141] Please refer to Figure 8 , Figure 8 which is a schematic block diagram of the fire-fighting device 300 provided by some other embodiments of the present application. In some other embodiments, the medium storage 310 is provided with a second throttling device 430. The second throttling device 430 is communicatively connected to the fire control host 330. The fire control host 330 is configured to open the second throttling device 430 according to the first data. The medium storage 310 is configured to provide fire-fighting medium to a plurality of first pipe bodies 321 when the second throttling device 430 is opened.

[0142] The second throttling device 430 is a valve body structure for controlling the connection or disconnection between the medium storage 310 and the first pipe body 321. When the second throttling device 430 is opened, the first pipe body 321 is in communication with the medium storage 310. When the second throttling device 430 is closed, the first pipe body 321 is disconnected from the medium storage 310.

[0143] The second throttling device 430 can be a butterfly valve, a ball valve, an electric valve, etc.

[0144] The second shut-off device 430 is communicatively connected to the fire control host 330, and the fire control host 330 can control the second shut-off device 430 to open or close. Specifically, the fire control host 330 can open the second shut-off device 430 according to the first data, so that the fire extinguishing medium stored in the medium storage 310 can be provided to the plurality of first pipes 321. Optionally, the fire control host 330 is used to open the second shut-off device 430 when the first data is greater than the first threshold.

[0145] When the second shut-off device 430 is open, the second shut-off device 430 can allow the medium storage 310 to provide the fire extinguishing medium to the plurality of first pipes 321. When the second shut-off device 430 is closed, the second shut-off device 430 can prevent the medium storage 310 from providing the fire extinguishing medium to the plurality of first pipes 321. By providing the second shut-off device 430, it is beneficial to reduce the risk of fire extinguishing medium leakage and improve the reliability of the energy storage system 10.

[0146] Please refer to Figure 9 and Figure 10 , Figure 9 is a schematic block diagram of the fire protection device 300 provided by some other embodiments of the present application. Figure 10 is a cross-sectional view of the bin body 210 provided by some embodiments of the present application. In some embodiments, the bin body 210 is provided with an air outlet 211. The fire protection device 300 includes an air exhaust mechanism 350, and the air exhaust mechanism 350 is provided corresponding to the air outlet 211. The air exhaust mechanism 350 is communicatively connected to the fire control host 330, and the fire control host 330 is used to open the air exhaust mechanism 350 corresponding to the fire sensor 340 according to the first data.

[0147] The bin body 210 is provided with an air outlet 211. The air outlet 211 communicates the inside and the outside of the bin body 210, and the air outlet 211 is used to allow the gas in the bin body 210 to be discharged outward.

[0148] The air exhaust mechanism 350 is a mechanism for discharging the gas in the bin body 210 to the outside. The air exhaust mechanism 350 can be accommodated in the air outlet 211, or the air exhaust mechanism 350 can be provided inside the bin body 210. The position of the air exhaust mechanism 350 corresponds to the position of the air outlet 211, so that the gas in the bin body 210 can be discharged outward through the air outlet 211. The air exhaust mechanism 350 includes a fan.

[0149] The air exhaust mechanism 350 is communicatively connected to the fire control host 330, and the fire control host 330 can control the air exhaust mechanism 350 to open or close. Specifically, the fire control host 330 can open the air exhaust mechanism 350 according to the first data, so that the gas in the bin body 210 is discharged outward. Optionally, the fire control host 330 is used to open the air exhaust mechanism 350 when the first data is greater than the first threshold.

[0150] When the exhaust mechanism 350 is opened, the exhaust mechanism 350 can quickly discharge the oxygen and combustible gases in the bin body 210 from the bin body 210. On the one hand, it can reduce the concentrations of oxygen and combustible gases in the bin body 210, thereby reducing the risk of further development of thermal runaway. On the other hand, it can create a negative pressure inside the bin body 210, facilitating the entry of fire-fighting media into the bin body 210.

[0151] Please refer to Figure 9 、 Figure 10 and Figure 11 , Figure 11 which is a schematic block diagram of the fire-fighting device 300 provided in some other embodiments of the present application. The fire-fighting device 300 includes a concentration sensor 360, and the concentration sensor 360 is used to detect the concentration of the fire-fighting media in the bin body 210. The concentration sensor 360 is communicatively connected to the fire-fighting host 330, and the fire-fighting host 330 is used to close the exhaust mechanism 350 and the first throttling device 420 when the concentration reaches a third threshold.

[0152] The concentration sensor 360 is a structure for detecting the concentration of the fire-fighting media in the bin body 210. For example, when the fire-fighting media is carbon dioxide, the concentration sensor 360 is a carbon dioxide concentration sensor.

[0153] The concentration sensor 360 is communicatively connected to the fire-fighting host 330, and the fire-fighting host 330 can open or close the exhaust mechanism 350 and the first throttling device 420 according to the detection result of the concentration sensor 360. Specifically, the fire-fighting host 330 can close the exhaust mechanism 350 and the first throttling device 420 according to the detection result of the concentration sensor 360, thereby stopping providing fire-fighting media to the bin body 210 and no longer discharging the gas in the bin body 210 to keep the concentration of the fire-fighting media in the bin body 210 above a preset concentration. Optionally, the fire-fighting host 330 is used to close the exhaust mechanism 350 and the first throttling device 420 when the concentration of the fire-fighting media reaches a third threshold.

[0154] The concentration sensor 360 can detect the concentration of the fire-fighting media in the bin body 210. When the concentration of the fire-fighting media in the bin body 210 reaches a third threshold, it indicates that the concentration of the fire-fighting media in the bin body 210 is relatively high. At this time, the fire-fighting host 330 can control the exhaust mechanism 350 and the first throttling device 420 to close, so that the exhaust mechanism 350 no longer discharges the gas in the bin body 210 to the outside, and the medium storage device no longer provides fire-fighting media to the bin body 210, keeping the concentration of the fire-fighting media in the bin body 210 above the third threshold, having 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 10 have better reliability.

[0155] Please refer to Figure 9 、 Figure 10 and Figure 11, in some embodiments, along the height direction of the bin body 210, the position of the air outlet 211 is higher than the connection position of the first pipe body 321 and the bin body 210.

[0156] In some embodiments, the bin body 210 is provided with an air inlet 212, the first pipe body 321 is communicated with the air inlet 212, and the connection position of the first pipe body 321 and the bin body 210 is the position where the air inlet 212 is located.

[0157] Along the height direction of the bin body 210, the position of the air outlet 211 is higher than the position of the air inlet 212.

[0158] Generally speaking, the weight of the fire-fighting medium is heavier than the weights of oxygen and combustible gases. By making the position of the air outlet 211 higher than the connection position of the first pipe body 321 and the bin body 210, it is easier for the air exhaust mechanism 350 to exhaust oxygen and combustible gases from the bin body 210, which is beneficial to gradually fill the bin body 210 with the fire-fighting medium and beneficial to improving the reliability of the energy storage system 10.

[0159] Please refer to Figure 9 , Figure 10 and Figure 11 , in some embodiments, the bin body 210 includes two opposite wall portions, the first pipe body 321 is connected to one wall portion, and the air outlet 211 is arranged on the other wall portion.

[0160] "The bin body 210 includes two opposite wall portions, the first pipe body 321 is connected to one wall portion, and the air outlet 211 is arranged on the other wall portion" means that: the first pipe body 321 and the air outlet 211 are respectively arranged on two opposite wall portions of the bin body 210. In other words, the air inlet 212 and the air outlet 211 are respectively arranged on two opposite wall portions of the bin body 210.

[0161] The first pipe body 321 and the air outlet 211 are respectively arranged on two opposite wall portions of the bin body 210, which is beneficial to making the fire-fighting medium fill the bin body 210 as much as possible to improve the fire-fighting effect and beneficial to improving the reliability of the energy storage system 10.

[0162] Please refer to Figure 12 , Figure 12 is a schematic block diagram of the fire-fighting device 300 provided in some other embodiments of the present application. In some embodiments, the fire-fighting device 300 includes an alarm 370, the alarm 370 is communicatively connected to the fire-fighting host 330, and the fire-fighting host 330 is configured to activate the alarm 370 according to the first data.

[0163] The alarm 370 is an electronic product that, in order to prevent or pre-empt the consequences of a certain event, uses forms such as sound, light, and air pressure to remind or warn us that we should take a certain action.

[0164] Optionally, the alarm 370 can be an audible and visual alarm, a pure sound alarm, a pure light signal alarm, a graphic display alarm, etc.

[0165] The alarm 370 is communicatively connected to the fire control host 330, and the fire control host 330 can control the alarm 370 to start or stop. Specifically, the fire control host 330 can start the alarm 370 according to the first data, so that the alarm 370 issues an alarm to prompt the surrounding personnel to evacuate. Optionally, the fire control host 330 is used to start the alarm 370 when the first data is greater than the first threshold, and turn off the alarm 370 after the second preset time.

[0166] The fire control host 330 can start the alarm 370 according to the first data to issue an alarm signal to prompt the surrounding personnel to evacuate, which is beneficial to improving the reliability of the energy storage system 10.

[0167] In some embodiments, the fire control host 330 is used to start the alarm 370 when the first data is greater than the first threshold, and delay opening the first shut-off device 420 corresponding to the fire sensor 340, and open the first shut-off device 420 corresponding to the storage body 210 adjacent to the storage body 210 where the fire sensor 340 is located when the first data is greater than the second threshold. The second threshold is greater than the first threshold.

[0168] The fire control host 330 starts the alarm 370 when the first data is greater than the first threshold, and the alarm 370 issues a warning signal for a second preset time. After the second preset time, the fire control host 330 opens the first shut-off device 420, the second shut-off device 430 and the exhaust mechanism 350 corresponding to the fire sensor 340.

[0169] The fire control host 330 is also used to open the first shut-off device 420 corresponding to the storage body 210 adjacent to the storage body 210 where the fire sensor 340 is located and the exhaust mechanism 350 corresponding to the storage body 210 adjacent to the storage body 210 where the fire sensor 340 is located when the first data is greater than the second threshold. For example, the storage body 210 where the fire sensor 340 is located is the first storage body, and the storage body 210 adjacent to the first storage body 210 is the second storage body. If the first data in the first storage body is greater than the second threshold, the fire control host 330 not only needs to open the first shut-off device 420 on the first pipe body 321 connected to the first storage body and the exhaust mechanism 350 provided in the first storage body, but also needs to open the first shut-off device 420 on the first pipe body 321 connected to the second storage body and the exhaust mechanism 350 provided in the second storage body.

[0170] The fire control host 330 is used to turn off the exhaust mechanism 350, the first shut-off device 420 and the second shut-off device 430 when the concentration of the fire extinguishing medium reaches the third threshold.

[0171] When the first data is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device 100 within the bin body 210. At this time, the fire control host 330 activates the alarm 370 to prompt the surrounding personnel to evacuate. After the alarm 370 has been sounding for a period of time, the fire control host 330 controls the first throttling device 420 on the first pipe body 321 connected to the bin body 210 to open, thereby supplying fire extinguishing medium into the bin body 210, so as to achieve directional supply of the fire extinguishing medium and inhibit the further development of the thermal runaway. When the first data is greater than the second data, it indicates that the thermal runaway of the battery device 100 in the bin body 210 where the fire sensor 340 is set has been relatively serious. The fire control host 330 controls the first throttling device 420 on the first pipe body 321 connected to the bin body 210 adjacent to the bin body 210 to open, thereby supplying fire extinguishing medium into the bin body 210 adjacent to the bin body 210, reducing the risk of the thermal runaway in the bin body 210 spreading to the bin body 210 adjacent to it, which is beneficial to improving the reliability of the energy storage system 10.

[0172] Please refer to Figure 13 , Figure 13 is a cross-sectional view of the bin body 210 provided in some other embodiments of the present application. In some other embodiments, the first pipe body 321 includes a pipe main body 3211 and a tapered section 3212. The tapered section 3212 includes a first end 32121 and a second end 32122. The pipe main body 3211 is connected to the medium storage 310 and the first end 32121, and the second end 32122 is connected to the bin body 210. The area of the flow-through cross-section of the tapered section 3212 gradually increases in the direction from the first end 32121 to the second end 32122.

[0173] The pipe main body 3211 is the main part of the first pipe body 321, and the pipe main body 3211 is connected to the medium storage 310 and the tapered section 3212.

[0174] The tapered section 3212 is the part of the first pipe body 321 connected to the bin body 210, and the area of the flow-through cross-section of the tapered section 3212 gradually increases in the direction from the pipe main body 3211 to the bin body 210.

[0175] The tapered section 3212 includes a relatively arranged first end 32121 and a second end 32122. Among them, the first end 32121 is connected to the pipe main body 3211, and the second end 32122 is connected to the bin body 210. Along the direction from the first end 32121 to the second end 32122, the area of the flow-through cross-section of the tapered section 3212 gradually increases.

[0176] The tapered section 3212 can be frustum-shaped, and the tapered section 3212 can also be prism-shaped.

[0177] It should be noted that the flow cross section is a cross section perpendicular to the extension direction of the gradient section 3212, and the area of the flow cross section is the cross-sectional area of the space in the gradient section 3212 that allows the firefighting medium to pass through on the flow cross section.

[0178] The flow cross section of the tube body 3211 is relatively small, which is conducive to increasing the flow velocity of the firefighting medium, so that the firefighting medium is quickly transported to the gradient section 3212. By gradually increasing the flow cross section of the gradient section 3212 in the direction from the first end 32121 to the second end 32122, the end of the first tube body 321 connected to the warehouse body 210 forms an expansion, so as to reduce the flow velocity of the firefighting medium and provide time for the firefighting medium to undergo phase change.

[0179] Please refer to Figure 13 In some embodiments, the inner circumference of the gradient section 3212 intersects with the first section to form an intersection line 32123, the first section passes through the central axis 3213 of the gradient section 3212, and the angle between the intersection line 32123 and the central axis 3213 is α, satisfying: 15°≤α≤25°.

[0180] The intersection line 32123 is the intersection line of the inner circumference of the gradient section 3212 and the first section passing through the perpendicular bisector of the gradient section 3212. There are two intersection lines between the inner circumference of the gradient section 3212 and the first section passing through the perpendicular bisector of the gradient section 3212, and the two intersection lines 32123 have the same angle with the perpendicular bisector of the gradient section 3212.

[0181] α represents the angle between the intersection line 32123 and the perpendicular bisector. When measuring, the gradient section 3212 can be cut open to measure the angle between the intersection line 32123 and the perpendicular bisector.

[0182] α can be 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, etc.

[0183] When α≥15°, when the length of the gradient section 3212 is the same, the area of the flow cross section of the gradient section 3212 increases greatly, which can effectively reduce the flow rate of the fire-fighting medium and provide time for the phase change of the fire-fighting medium. When α≤25°, when the length of the gradient section 3212 is the same, the area of the flow cross section of the gradient section 3212 increases less than too much, which is beneficial to reduce the recoil force of the fire-fighting medium on the first tube body 321 after the phase change, reduce the risk of damage to the first tube body 321, and improve the stability of the first tube body 321.

[0184] In some embodiments, the tube body 3211 and the gradient section 3212 are detachably connected.

[0185] "Detachable connection" means a connection method in which, after being repeatedly assembled and disassembled a certain number of times, the connecting parts and the parts to be connected are still not damaged and can maintain the original connection quality. For example, the pipe body 3211 can be threadedly connected to the tapered section 3212.

[0186] When the pipe body 3211 is detachably connected to the tapered section 3212, on the one hand, the pipe body 3211 and the tapered section 3212 can be manufactured separately, which is beneficial to simplify manufacturing and reduce manufacturing costs. Moreover, the tapered section 3212 can be replaced according to needs to meet different requirements. On the other hand, when the tapered section 3212 is damaged, it can be replaced and repaired, reducing the repair cost.

[0187] In some other embodiments, the pipe body 3211 and the tapered section 3212 are integrally formed.

[0188] "The pipe body 3211 and the tapered section 3212 are integrally formed" means that the pipe body 3211 and the tapered section 3212 are of an integral structure. For example, the pipe body 3211 and the tapered section 3212 can be integrally formed by extrusion.

[0189] When the pipe body 3211 and the tapered section 3212 are integrally formed, the connection stability between the tapered section 3212 and the pipe body 3211 is better, and the fire-fighting medium is not easily leaked.

[0190] Please refer to Figure 14 , Figure 14 , which is a top view schematic diagram of the energy storage system 10 provided by some other embodiments of the present application. In some embodiments, the pipeline system 320 includes a main pipe 322, and the main pipe 322 connects the medium storage 310 and a plurality of first pipe bodies 321.

[0191] The main pipe 322 is a pipe body structure that connects the medium storage 310 and a plurality of first pipe bodies 321. The plurality of first pipe bodies 321 can be regarded as a plurality of branch pipes, and the plurality of branch pipes are connected to the main pipe 322. The fire-fighting medium provided by the medium storage 310 can enter the plurality of compartments 210 through the main pipe 322 and the plurality of first pipe bodies 321.

[0192] By providing the main pipe 322 to connect the medium storage 310 and the plurality of first pipe bodies 321, it is convenient to reduce the difficulty of pipeline layout and the cost of the pipeline system 320.

[0193] Please refer to Figure 14 , in some embodiments, the main pipe 322 is provided with an overflow valve 440.

[0194] The overflow valve 440 plays a safety protection role in the pipeline system 320. When the pressure of the pipeline system 320 exceeds the threshold value, the overflow valve 440 opens, discharging a part of the fire-fighting medium in the pipeline system 320, so that the pressure of the pipeline system 320 does not exceed the threshold value, thereby reducing the risk of accidents occurring in the pipeline system 320 due to excessive pressure.

[0195] By arranging the overflow valve 440 on the main pipe 322, the pipeline system 320 can be protected, and the risk of damage to the pipeline system 320 can be reduced.

[0196] In some embodiments, the first pipe body 321 and the main pipe 322 are detachably connected.

[0197] In some embodiments, the first pipe body 321 and the main pipe 322 are threadedly connected.

[0198] In other embodiments, the first pipe body 321 and the main pipe 322 are butt-fitted and locked by a clamp to achieve detachable connection.

[0199] By detachably connecting the first pipe body 321 and the main pipe 322, during transportation, the first pipe body 321 and the main pipe 322 can be disassembled to realize the transportation of the first pipe body 321 and the main pipe 322 together, reducing the transportation cost. During on-site assembly, the first pipe body 321 and the main pipe 322 are then connected together. In addition, when any one of the first pipe body 321 and the main pipe 322 is damaged, it can be replaced and repaired, thereby reducing the maintenance cost.

[0200] In some embodiments, the fire-fighting medium includes at least one of carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon.

[0201] Carbon dioxide, nitrogen, helium, neon, argon, krypton, xenon, and radon have relatively stable chemical properties, are neither flammable nor combustion-supporting, and are not prone to chemical reactions with the components in the bin body 210. 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 convenient for storage. It can absorb heat during phase change, which is beneficial to reducing the temperature in the bin body 210. In addition, carbon dioxide is relatively friendly to the environment.

[0202] In some embodiments, the bin body group 200 includes a plurality of bin bodies 210 stacked along the height direction, and the dimensions of the plurality of bin bodies 210 of the bin body group 200 along the height direction are all smaller than the dimensions of a standard container along the height direction.

[0203] The standard container can be the size of a standard container during transportation, such as 10 feet, 20 feet, 30 feet, 40 feet or 45 feet, which meets the corresponding standards, and its length, width and height have corresponding dimensions respectively. The standard container can refer to GB / T 1413-2023 Series 1 Classification, Dimensions and Rated Mass of Containers.

[0204] 10 feet can include: the dimension in the length direction is 2991mm, with a tolerance of 0mm - 5mm; the dimension in the width direction is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction is 2438mm or less than 2438mm; the tolerance is 0mm - 5mm.

[0205] 20 feet can include: the dimension in the length direction is 6058mm, with a tolerance of 0mm - 6mm; the dimension in the width direction is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0206] 30 feet can include: the dimension in the length direction is 9125mm, with a tolerance of 0mm - 10mm; the dimension in the width direction is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0207] 40 feet can include: the dimension in the length direction is 12192mm, with a tolerance of 0mm - 10mm; the dimension in the width direction is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0208] 45 feet can include: the dimension in the length direction is 13716mm, with a tolerance of 0mm - 10mm; the dimension in the width direction is 2438mm, with a tolerance of 350mm - 5mm; and the dimension in the height direction is 2591mm or 2896mm; the tolerance is 0mm - 5mm.

[0209] In the embodiments of the present application, for the bin bodies of various sizes, the dimensions within the ranges of ±1%, ±2%, ±3%, ±4%, ±5% of their dimensions can be regarded as the dimensions within the tolerance range.

[0210] In some embodiments, the standard container is a 20 - foot standard container, and the height of the standard container is 2896mm, 2591mm or 2438mm. The dimension of the bin body 210 in the height direction is less than 2896mm.

[0211] When the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all smaller than the dimension of a standard container in the height direction, the total weight of the components in the bin 210 can be reduced, which is beneficial to improving the problem of overweight during transportation and reducing the transportation cost of the energy storage system 10.

[0212] In some embodiments, the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all greater than or equal to one-third of the dimension of a standard container in the height direction.

[0213] When the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all greater than or equal to one-third of the dimension of a standard container in the height direction, the energy storage system 10 has high manufacturability and is more convenient for transportation and installation.

[0214] Optionally, the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all greater than or equal to one-half of the dimension of a standard container in the height direction.

[0215] When the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all greater than or equal to one-half of the dimension of a standard container in the height direction, the energy storage system 10 has higher manufacturability, higher volume energy density, and is more convenient for transportation and installation. For example, after the multiple bins 210 of the bin group 200 are stacked, they are higher than the height of a standard container, and the total weight of the bin 210 and the components arranged in the bin 210 is relatively low. With such an arrangement, the multiple bins 210 of the bin group 200 can be transported individually, and after being stacked at the place of use, the energy storage system 10 has a higher power.

[0216] In some embodiments, the sum of the dimensions of the multiple bins 210 of the bin group 200 in the height direction is greater than or equal to the dimension of a standard container in the height direction.

[0217] Exemplarily, the standard container is a 20-foot standard container, the height of the standard container is 2896 mm, and the sum of the dimensions of the multiple bins 210 of the bin group 200 in the height direction is greater than or equal to 2896 mm.

[0218] By making the sum of the dimensions of the multiple bins 210 of the bin group 200 in the height direction greater than or equal to the dimension of a standard container in the height direction, it is beneficial to increase the power of the energy storage system 10.

[0219] Optionally, the dimensions of the multiple bins 210 of the bin group 200 in the height direction are all greater than or equal to 805 mm and all less than 2896 mm.

[0220] The dimension of each bin 210 in the bin group 200 in the height direction can be a point value of any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, 2895mm or a point value between any two of them.

[0221] By setting the dimensions of the multiple bins 210 in the bin group 200 in the height direction to be greater than or equal to 805mm and less than 2896mm, it is beneficial to reduce the total weight of the bin 210 and the components inside the bin 210, and can improve the power of the energy storage system 10 as much as possible, reducing the use cost of the energy storage system 10.

[0222] In some embodiments, the dimensions of the multiple bins 210 in the bin group 200 in their length direction are all the same as the dimensions in the length direction of a standard container, and the dimensions of the multiple bins 210 in the bin group 200 in their width direction are all the same as the dimensions in the width direction of a standard container.

[0223] By making the dimensions of the multiple bins 210 in the bin group 200 in their length direction all the same as the dimensions in the length direction of a standard container, and the dimensions of the multiple bins 210 in the bin group 200 in their width direction all the same as the dimensions in the width direction of a standard container, it is beneficial to match the transportation tools and lifting appliances of existing standard containers, reducing the transportation cost of the energy storage system 10, and thus reducing the use cost of the energy storage system 10.

[0224] In some embodiments, the total weight of the bin 210 and the components arranged in the bin 210 is less than or equal to 36 tons.

[0225] The components arranged in the bin 210 are, for example, components such as the battery device 100, connecting pipelines, and the fire control host 330.

[0226] The total weight of the bin 210 and the components arranged in the bin 210 can be a point value of any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, 36 tons or a point value between any two of them.

[0227] By making the total weight of the bin 210 and the components arranged in the bin 210 less than or equal to 36 tons, it can meet the requirements of the transportation limits in some countries, reducing the transportation difficulty and transportation cost.

[0228] Please refer to Figure 15 , Figure 15Schematic 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 910 and a battery monitoring circuit, and the battery monitoring circuit is used to collect second data of the battery device 100. The control module 910 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.

[0229] The battery monitoring circuit can be a device for monitoring battery cells in the battery device 100. The collection of the second data of the battery device 100 by the battery monitoring circuit may mean that the battery monitoring circuit can collect the voltage and temperature data of the battery cells in the battery device 100, and these data are the basis for the battery management system to perform state monitoring and control.

[0230] The control module 910 can be a module in the energy storage system 10 for monitoring and managing the battery device 100, and it can serve as the management unit of the battery device 100 in the energy storage system 10. The control module 910 can be communicatively connected to the battery monitoring circuit, 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 910 can monitor information such as 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 910 includes 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 a fiber optic conversion module, etc.

[0231] The operating state data of the energy storage system 10 determined by the control module 910 is associated with the second data of the battery device 100 collected by the battery monitoring circuit, enabling the control module 910 to control the battery device 100, which helps to reduce the number of settings of the control module 910, achieve greater utilization of the control module 910, and contribute to reducing the cost of the energy storage system 10.

[0232] Please refer to Figure 15 , in some embodiments, the energy storage system 10 further includes a sub-control module 920, and the sub-control module 920 is communicatively connected between the battery monitoring circuit and the control module 910.

[0233] The sub-control module 920 can serve as the battery management unit of the battery cluster formed by multiple battery devices 100, and is used to monitor and manage the battery cluster. The sub-control module 920 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 920 can include an auxiliary battery management unit SBMU (Slave Battery Management Unit), a fusion switch and other modules.

[0234] In some embodiments, the sub-control module 920 is used to forward the second data. For example, the sub-control module 920 can forward information such as the current, voltage, power, state of charge, or temperature of the battery device 100 to the control module 910.

[0235] In other embodiments, the sub-control module 920 is used to acquire and process the second data, and transfer the processed data to the control module 910. For example, the sub-control module 920 can process information such as the current, voltage, power, state of charge, or temperature of the battery device 100 and then forward it to the control module 910.

[0236] By arranging the sub-control module 920 between the battery monitoring circuit and the control module 910, 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, being beneficial to improving the reliability of the system, and also reducing the requirements for the processor and the communication bus, which is beneficial to reducing the overall cost of the system.

[0237] 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 other embodiments of this application. In still other embodiments, the battery monitoring circuit is directly communicatively connected to the control module 910.

[0238] By directly communicatively connecting the battery monitoring circuit to the control module 910, the energy storage system 10 has a two-level framework, enabling the control module 910 to monitor key parameters such as the voltage, current, and temperature of the battery cells in the battery device 100 in real time, being beneficial to operating the battery cells of the battery device 100 in a safe state, reducing the possibility of overcharging, over-discharging, short-circuiting, etc., and being beneficial to improving the reliability of the energy storage system 10.

[0239] In some embodiments, the control module 910 is housed in a housing 210.

[0240] There is only one control module 910. The control module 910 can be housed in a housing 210, and the housing 210 can protect the control module 910 and reduce the risk of damage to the control module 910.

[0241] Please refer to Figure 17 , Figure 17 which is a schematic block diagram of the fire-fighting method 20 provided for some embodiments of the present application. Some embodiments of the present application also provide a fire-fighting method 20, and the fire-fighting method 20 is based on the above energy storage system 10. The fire-fighting method 20 includes: Exhaust air step S100: exhausting the gas in the compartment 210 where thermal runaway occurs; Fire-fighting step S200: supplying the fire-fighting medium stored in the medium storage 310 to the compartment 210 where thermal runaway occurs.

[0242] The "compartment 210 where thermal runaway occurs" is also the compartment 210 where the first data is greater than the first threshold. When the first data in the compartment 210 is greater than the first threshold, it is considered that a thermal runaway has occurred in the battery device 100 in the compartment 210.

[0243] In the exhaust air step S100, the fire-fighting host 330 starts the exhaust air mechanism 350, thereby exhausting the gas in the compartment 210 where thermal runaway occurs.

[0244] In the fire-fighting step S200, the fire-fighting host 330 opens the first throttling device 420 and the second throttling device 430, thereby supplying the fire-fighting medium stored in the medium storage 310 to the compartment 210 where thermal runaway occurs.

[0245] It should be noted that the exhaust air step S100 can be executed before the fire-fighting step S200, the exhaust air step S100 can also be executed simultaneously with the fire-fighting step S200, and the exhaust air step S100 can also be executed after the fire-fighting step S200.

[0246] Please refer to Figure 18 , Figure 18 which is a schematic block diagram of the fire-fighting method 20 provided for other embodiments of the present application. In other embodiments, after the exhaust air step S100 and the fire-fighting step S200, the fire-fighting method 20 further includes: Maintenance step S300: maintaining the volume concentration of the fire-fighting medium in the compartment 210 where thermal runaway occurs above a third threshold for a first preset time.

[0247] Since the compartment 210 is not completely sealed, the fire-fighting medium in the compartment 210 will leak outwards. Therefore, in the maintenance step S300, the fire-fighting host 330 will open and close the first throttling device 420, the second throttling device 430, and the exhaust air mechanism 350 according to the detection result of the concentration sensor 360, thereby maintaining the volume concentration of the fire-fighting medium in the compartment 210 above the third threshold for the first preset time.

[0248] By maintaining the concentration of the fire extinguishing medium in the bin body 210 above the third threshold for the first preset time, it has a good fire extinguishing effect, which is beneficial to reducing the risk of secondary thermal runaway and improving the reliability of the energy storage system 10.

[0249] Please refer to Figure 19 , Figure 19 which is a schematic block diagram of the fire extinguishing method 20 provided in some other embodiments of the present application. In some other embodiments, the fire extinguishing method 20 further includes: Early warning step S50: When the first data in the bin body 210 is greater than the first threshold, an early warning signal is issued for the second preset time, and after the second preset time, the exhaust step and the fire extinguishing step are executed.

[0250] In the early warning step S50, when the first data is greater than the first threshold, the fire control host 330 activates the alarm 370, and the alarm 370 issues an early warning signal for the second preset time. After the second preset time, the fire control host 330 opens the first shut-off device 420, the second shut-off device 430 and the exhaust mechanism 350 corresponding to the fire sensor 340.

[0251] When implementing the fire extinguishing method 20, the early warning step S50 is executed first, then the exhaust step S100 and the fire extinguishing step S200 are executed, and finally the maintenance step S300 is executed.

[0252] When the first data is greater than the first threshold, it indicates that a thermal runaway has occurred in the battery device 100 in the bin body 210. At this time, the fire control host 330 activates the alarm 370 to prompt the surrounding personnel to evacuate. After the second preset time, executing the exhaust step and the fire extinguishing step is beneficial to reducing the risk of danger to the surrounding personnel due to the action of the fire extinguishing medium.

[0253] In some embodiments, in the fire extinguishing step S200, when the first data in the bin body 210 is greater than the second threshold, the fire extinguishing medium stored in the medium storage 310 is provided to the bin body 210 where the thermal runaway occurs and the bin body 210 adjacent to the bin body 210 where the thermal runaway occurs. The second threshold is greater than the first threshold.

[0254] In the fire protection step S200, the fire protection host 330 is further configured to open the first shut-off device 420 corresponding to the bin 210 adjacent to the bin 210 where the fire sensor 340 is located, and the exhaust mechanism 350 corresponding to the bin 210 adjacent to the bin 210 where the fire sensor 340 is located when the first data is greater than the second threshold. For example, if the bin 210 where the fire sensor 340 is located is the first bin, and the bin 210 adjacent to the first bin is the second bin, and the first data in the first bin is greater than the second threshold, then the fire protection host 330 not only needs to open the first shut-off device 420 on the first pipe body 321 connected to the first bin and the exhaust mechanism 350 provided in the first bin, but also needs to open the first shut-off device 420 on the first pipe body 321 connected to the second bin and the exhaust mechanism 350 provided in the second bin.

[0255] When the first data is greater than the second data, it indicates that the thermal runaway of the battery device 100 in the bin 210 where the fire sensor 340 is installed has been relatively serious. The fire protection medium stored in the medium storage 310 is provided to the bin 210 where the thermal runaway occurs and the bin 210 adjacent to the bin 210 where the thermal runaway occurs, reducing the risk of the thermal runaway in this bin 210 spreading to the adjacent bin 210, which is beneficial to improving the reliability of the energy storage system 10.

[0256] According to some embodiments of the present application, please refer to Figures 1 - 19 .

[0257] An embodiment of the present application provides an energy storage system 10. The energy storage system 10 includes a battery device 100, a plurality of chamber groups 200, and a fire protection device 300. Each chamber group 200 includes one chamber 210 or a plurality of chambers 210 stacked in the height direction, and the battery device 100 is disposed in each chamber 210. The fire protection device 300 includes a medium storage 310 and a pipeline system 320. The plurality of chamber groups 200 surround the medium storage 310, and the pipeline system 320 connects the medium storage 310 and all the chambers 210. The medium storage 310 is configured to supply the fire protection medium stored therein to the chambers 210. The energy storage system 10 includes a plurality of chamber groups 200. When each chamber group 200 includes one chamber 210 and the battery device 100 is disposed in each chamber 210, it is beneficial to increase the capacity of the energy storage system 10. When each chamber group 200 includes a plurality of chambers 210 stacked in the height direction and the battery device 100 is disposed in each chamber 210, it is not only beneficial to increase the capacity of the energy storage system 10, but also beneficial to increase the area energy density of the energy storage system 10. The plurality of chamber groups 200 surround the medium storage 310, so that the lengths of the pipelines from the medium storage 310 to each chamber group 200 are substantially the same, and the flow resistance of the fire protection medium to each chamber group 200 is substantially the same, which is beneficial to make the flow rates of the fire protection medium supplied by the medium storage 310 to the plurality of chamber groups 200 substantially the same, so that each of the plurality of chamber groups 200 has good fire protection capabilities, which is beneficial to improve the reliability of the energy storage system 10.

[0258] The energy storage system 10 includes four groups of bins 200, and the four groups of bins 200 are arranged in two rows and two columns. The two groups of bins 200 in each row are arranged along a first direction, and the two groups of bins 200 in each column are arranged along a second direction. Along the first direction, there is a first channel 220 between the two groups of bins 200 in each row, and the first channels 220 are arranged on both sides of the medium storage 310 along the second direction. Along the second direction, there is a second channel 230 between the two groups of bins 200 in each column, and the second channels 230 are arranged on both sides of the medium storage 310 along the first direction. When the energy storage system 10 includes four groups of bins 200, the four groups of bins 200 are arranged in two rows and two columns. In this way, the projection of the energy storage system 10 in the height direction is rectangular and relatively square, which can reduce the waste of space when installing multiple energy storage systems 10 and improve the utilization rate of land. The second channels 230 are arranged on both sides of the medium storage 310 along the first direction, and the first channels 220 are arranged on both sides of the medium storage 310 along the second direction. On the one hand, the medium storage 310 is roughly located in the middle position of the four groups of bins 200, so that the lengths of the pipelines from the medium storage 310 to each group of bins 200 are roughly the same, and the flow resistance of the fire extinguishing medium to each group of bins 200 is roughly the same, which is beneficial to making the flow rates of the fire extinguishing medium supplied by the medium storage 310 to the multiple groups of bins 200 roughly the same, so that the multiple groups of bins 200 all have good fire extinguishing capabilities and is beneficial to improving the reliability of the energy storage system 10. On the other hand, the first channels 220 and the second channels 230 can serve as isolation channels to prevent the fire of the bin group 200 in thermal runaway from spreading to another bin group 200. On the further hand, the first channels 220 and the second channels 230 can serve as maintenance channels, thus facilitating the maintenance of the bin group 200.

[0259] The pipeline system 320 includes multiple first pipe bodies 321, each bin 210 is connected to one first pipe body 321, and each first pipe body 321 is connected to the medium storage 310. A throttling structure 410 is arranged on at least one first pipe body 321. By arranging the throttling structure 410 on the first pipe body 321, the throttling structure 410 can adjust the flow rate of the fire extinguishing medium supplied by the medium storage 310 to the bin 210 corresponding to the first pipe body 321, which is beneficial to making the flow rates of the fire extinguishing medium supplied by the medium storage 310 to the multiple bins 210 roughly the same, so that the multiple bins 210 all have good fire extinguishing capabilities and is beneficial to improving the reliability of the energy storage system 10.

[0260] A first shut-off device 420 is provided on each first pipe body 321. Along the flow direction of the fire-fighting medium in the first pipe body 321, the throttling structure 410 is located downstream of the first shut-off device 420. The throttling structure 410 is arranged downstream of the first shut-off device 420, so that the throttling structure 410 can balance the influence of the first shut-off structure on the flow rate when adjusting the flow rate, which is beneficial to making the flow rates of the fire-fighting media provided by the medium storage 310 to the plurality of bins 210 substantially the same, enabling the plurality of bins 210 to all have good fire-fighting capabilities, and being beneficial to improving the reliability of the energy storage system 10.

[0261] The fire-fighting device 300 includes a fire-fighting main unit 330 and a plurality of fire-fighting sensors 340, and a fire-fighting sensor 340 is provided in each bin 210. The plurality of fire-fighting sensors 340 and the first shut-off device 420 are both communicatively connected to the fire-fighting main unit 330. The fire-fighting sensor 340 is used to obtain first data in the bin 210, and the fire-fighting main unit 330 is used to open the first shut-off device 420 corresponding to the fire-fighting sensor 340 according to the first data. By providing a fire-fighting sensor 340 in each bin 210, the accuracy and timeliness of detecting whether the battery device 100 in each bin 210 has a thermal runaway can be improved. The plurality of fire-fighting sensors 340 and the plurality of first shut-off devices 420 are both communicatively connected to the fire-fighting main unit 330. On the one hand, the fire-fighting control of the plurality of bins 210 is realized by one fire-fighting main unit 330, which is beneficial to reducing the volume occupation of the fire-fighting main unit 330, improving the energy density of the energy storage system 10, and being beneficial to reducing the cost of the fire-fighting device 300. On the other hand, the fire-fighting main unit 330 can automatically control the opening of the first shut-off device 420 according to the first data of the fire-fighting sensor 340, 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 10.

[0262] The fire control host 330 is used to open the first shut-off device 420 corresponding to the fire sensor 340 when the first data is greater than the first threshold, and open the first shut-off device 420 corresponding to the bin 210 adjacent to the bin 210 where the fire sensor 340 is located when the first data is greater than the second threshold, and the second threshold is greater than the first threshold. When the first data is greater than the first threshold, it indicates that the battery device 100 in the bin 210 where the fire sensor 340 is set has a thermal runaway. The fire control host 330 controls the first shut-off device 420 on the first pipe body 321 connected to the bin 210 to open, so as to supply fire extinguishing medium into the bin 210, thereby realizing the directional supply of fire extinguishing medium and suppressing the further development of thermal runaway. When the first data is greater than the second data, it indicates that the thermal runaway of the battery device 100 in the bin 210 where the fire sensor 340 is set has been relatively serious. The fire control host 330 controls the first shut-off device 420 on the first pipe body 321 connected to the bin 210 adjacent to the bin 210 to open, so as to supply fire extinguishing medium into the bin 210 adjacent to the bin 210, reducing the risk of the thermal runaway in the bin 210 spreading to the bin 210 adjacent to it, which is beneficial to improving the reliability of the energy storage system 10.

[0263] 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 in the protection scope of the present application.

Claims

1. An energy storage system, characterized in that, Comprising: A battery device; A plurality of chamber groups, each chamber group including one chamber or a plurality of chambers stacked in the height direction, the chambers being containers, and the battery device being disposed in each chamber; A fire-fighting device, including a medium storage and a pipeline system, a plurality of the chamber groups surrounding the medium storage, the pipeline system connecting the medium storage and all the chambers, and the medium storage being configured to supply the fire-fighting medium stored therein to the chambers.

2. The energy storage system according to claim 1, wherein, The energy storage system includes four chamber groups, the four chamber groups being arranged in two rows and two columns, two of the chamber groups in each row being arranged in a first direction, and two of the chamber groups in each column being arranged in a second direction; Along the first direction, a first passage is provided between two of the chamber groups in each row, and the first passages are provided on both sides of the medium storage along the second direction; Along the second direction, a second passage is provided between two of the chamber groups in each column, and the second passages are provided on both sides of the medium storage along the first direction.

3. The energy storage system according to claim 1, wherein, The pipeline system includes a plurality of first pipe bodies, each chamber being connected to one of the first pipe bodies, and each first pipe body being connected to the medium storage.

4. The energy storage system according to claim 3, characterized in that, A throttling structure is provided on at least one of the first pipe bodies.

5. The energy storage system according to claim 3, wherein A first throttling device is provided on each of the first pipe bodies.

6. The energy storage system according to claim 5, wherein A throttling structure is provided on at least one of the first pipe bodies, and along the flow direction of the fire-fighting medium in the first pipe body, the throttling structure is located downstream of the first throttling device.

7. The energy storage system according to claim 5, wherein The fire-fighting device includes a fire-fighting main machine and a plurality of fire-fighting sensors, and the fire-fighting sensors are disposed in each chamber; The plurality of fire-fighting sensors and the first throttling devices are all communicatively connected to the fire-fighting main machine, the fire-fighting sensors being configured to obtain first data in the chamber, and the fire-fighting main machine being configured to open the first throttling device corresponding to the fire-fighting sensor according to the first data.

8. The energy storage system according to claim 7, characterized in that, The fire-fighting main machine is configured to open the first throttling device corresponding to the fire-fighting sensor when the first data is greater than a first threshold, and to open the first throttling device corresponding to the chamber adjacent to the chamber where the fire-fighting sensor is located when the first data is greater than a second threshold, the second threshold being greater than the first threshold.

9. The energy storage system according to claim 7, wherein, The fire-fighting sensor includes at least one of a temperature sensor, a smoke detector, and a combustible gas detector.

10. The energy storage system according to claim 7, wherein A second throttling device is provided on the medium storage, the second throttling device being communicatively connected to the fire-fighting main machine, the fire-fighting main machine being configured to open the second throttling device according to the first data, and the medium storage being configured to supply the fire-fighting medium to the plurality of first pipe bodies when the second throttling device is opened.

11. The energy storage system according to claim 7, wherein The chamber is provided with an air outlet, the fire-fighting device includes an air exhaust mechanism, the air exhaust mechanism being provided corresponding to the air outlet, the air exhaust mechanism being communicatively connected to the fire-fighting main machine, and the fire-fighting main machine being configured to open the air exhaust mechanism corresponding to the fire-fighting sensor according to the first data.

12. The energy storage system according to claim 11, wherein, The fire protection device includes a concentration sensor for detecting the concentration of the fire protection medium in the bin body. The concentration sensor is communicatively connected to the fire protection main machine, and the fire protection main machine is configured to close the exhaust mechanism and the first shut-off device when the concentration reaches a third threshold.

13. The energy storage system according to claim 11, wherein Along the height direction of the bin body, the position of the air outlet is higher than the connection position of the first pipe body and the bin body.

14. The energy storage system according to claim 11, wherein The bin body includes two oppositely arranged wall portions. The first pipe body is connected to one of the wall portions, and the air outlet is arranged on the other wall portion.

15. The energy storage system according to claim 7, wherein The fire protection device includes an alarm, and the alarm is communicatively connected to the fire protection main machine. The fire protection main machine is configured to activate the alarm according to the first data.

16. The energy storage system according to claim 15, wherein The fire protection main machine is configured to activate the alarm when the first data is greater than a first threshold, delay in opening the first shut-off device corresponding to the fire sensor, and open the first shut-off device corresponding to the bin body adjacent to the bin body where the fire sensor is located when the first data is greater than a second threshold, and the second threshold is greater than the first threshold.

17. The energy storage system according to claim 3, wherein The first pipe body includes a pipe main body and a tapered section. The tapered section includes a first end and a second end. The pipe main body connects the medium storage and the first end, and the second end is connected to the bin body. The area of the flow-through cross-section of the tapered section gradually increases in the direction from the first end to the second end.

18. The energy storage system according to claim 17, wherein The inner circumferential surface of the tapered section intersects with a first cross-section to form an intersection line. The first cross-section passes through the central axis of the tapered section, and the angle between the intersection line and the central axis is α, satisfying: 15° ≤ α ≤ 25°.

19. The energy storage system according to claim 18, wherein The pipe main body and the tapered section are detachably connected; Alternatively, the pipe main body and the tapered section are integrally formed.

20. The energy storage system according to claim 3, characterized in that, The pipeline system includes a main pipe, and the main pipe connects the medium storage and a plurality of the first pipe bodies.

21. The energy storage system according to claim 20, wherein The main pipe is provided with an overflow valve.

22. The energy storage system according to claim 20, wherein The first pipe body and the main pipe are detachably connected.

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

24. The energy storage system according to any one of claims 1-22, characterized in that, The bin body group includes a plurality of bin bodies stacked along the height direction. The dimensions of the plurality of bin bodies in the bin body group along the height direction are all smaller than the dimensions of a standard container along the height direction.

25. The energy storage system according to claim 24, wherein The dimensions of the plurality of bin bodies in the bin body group along their length direction are all the same as the dimensions of a standard container along the length direction, and the dimensions of the plurality of bin bodies in the bin body group along their width direction are all the same as the dimensions of a standard container along the width direction.

26. A fire-fighting method, characterized in that, Based on the energy storage system according to any one of claims 1-25, the fire protection method includes: Exhaust step: exhausting the gas in the bin body where thermal runaway occurs; Fire protection step: supplying the fire protection medium stored in the medium storage to the bin body where thermal runaway occurs.

27. The fire protection method according to claim 26, characterized in that, After the exhaust step and the fire protection step, the fire protection method further includes: Maintaining step: maintaining the volume concentration of the fire protection medium in the bin body where thermal runaway occurs above a third threshold for a first preset time.

28. The fire protection method according to claim 27, wherein, The fire protection method further includes: Warning steps: When the first data in the bin body is greater than the first threshold, a warning signal is issued for a second preset time, and after the second preset time, the exhaust step and the fire protection step are executed.

29. The fire protection method according to claim 28, wherein, In the fire protection step, when the first data in the bin body is greater than the second threshold, the fire protection medium stored in the medium storage is provided to the bin body where thermal runaway occurs and the bin body adjacent to the bin body where thermal runaway occurs, and the second threshold is greater than the first threshold.

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