Fire fighting device, control method of fire fighting device and energy storage system

Abstract

The invention relates to the technical field of energy storage systems, and provides a fire fighting device, a control method of the fire fighting device and an energy storage system, the fire fighting device is applied to the energy storage system, the energy storage system comprises an energy storage cabin and a battery device, the energy storage cabin is provided with a containing cavity, and the battery device is arranged in the containing cavity. The fire fighting device comprises a liquid pipeline, a liquid storage part and a control part, and the liquid pipeline is located in the containing cavity; the liquid storage part is arranged in the energy storage cabin and is communicated with the accommodating cavity and / or the battery device through a liquid pipeline; the control piece is arranged on the liquid pipeline so as to open or close the liquid pipeline; and the control part opens the liquid pipeline, so that the fire-fighting liquid in the liquid storage part is introduced into the corresponding accommodating cavity and / or the battery device, and the temperature of the accommodating cavity and / or the battery device is reduced. Through the arrangement, the thermal runaway control efficiency of the energy storage system is improved, the fire occurrence probability is reduced, and the safety of the energy storage system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to a fire-fighting device, a control method for a fire-fighting device, and an energy storage system. Background Art

[0002] With the continuous development of lithium-ion batteries in the field of energy storage, high-energy-density energy storage systems have emerged.

[0003] Energy storage systems are equipped with multiple battery clusters, each containing multiple battery modules. As the energy density of energy storage systems increases, the number of battery clusters and the energy density of each battery module also increase. If thermal runaway occurs in such energy storage systems, they can cause severe fires.

[0004] Therefore, there is an urgent need for an energy storage system that can quickly extinguish fires. Summary of the Invention

[0005] The present application provides a fire-fighting device, a control method for a fire-fighting device, and an energy storage system, which can improve the control efficiency of the energy storage system against thermal runaway, quickly extinguish fires, and enhance the safety of the energy storage system.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a fire-fighting device, comprising:

[0008] A liquid pipeline, a liquid storage component, and a control component, wherein the liquid storage component is disposed in the energy storage compartment and is used to communicate with the accommodating chamber of the energy storage system and / or the battery device of the energy storage system through the liquid pipeline; the control component is disposed in the liquid pipeline to open or close the liquid pipeline;

[0009] The control component opens the liquid pipeline to allow the firefighting liquid in the liquid storage component to flow into the accommodating chamber and / or the battery device, so as to reduce the temperature of the accommodating chamber and / or the battery device.

[0010] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the control element; the controller opens or closes the liquid pipeline by controlling the control element.

[0011] In some embodiments, the liquid pipeline includes a first liquid supply pipe, and the first liquid supply pipe is used to connect the liquid storage component and the accommodating chamber.

[0012] In some embodiments, the control element includes a first control element, which is disposed on the first liquid supply pipe and is used to open or close the first liquid supply pipe.

[0013] In some embodiments, there are multiple accommodating cavities, multiple battery devices, and the battery devices are disposed in the accommodating cavities, and the battery devices and the accommodating cavities are disposed in a one-to-one correspondence;

[0014] There are multiple first liquid supply pipes, and the first liquid supply pipes and the accommodating chambers are arranged in a one-to-one correspondence;

[0015] There are multiple first control members, and the first control members are arranged in a one-to-one correspondence with the first liquid supply pipes to open or close the corresponding first liquid supply pipes.

[0016] In some embodiments, the first liquid supply pipe has a liquid outlet;

[0017] The liquid outlet of the first liquid supply pipe is located higher than the top of the battery device.

[0018] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the first control component; the controller opens or closes the first liquid supply pipe by controlling the first control component.

[0019] In some embodiments, the battery device includes a battery pack having a box; the liquid pipeline is used to connect the box and the liquid storage member.

[0020] In some embodiments, the liquid pipeline further includes a second liquid supply pipe, and the second liquid supply pipe is used to connect the box and the liquid storage component.

[0021] In some embodiments, the control element includes a second control element, and the second control element is disposed on the second liquid supply pipe to open or close the second liquid supply pipe.

[0022] In some embodiments, there are multiple battery packs;

[0023] The second liquid supply pipe has a plurality of outlet ends, the outlet ends of the second liquid supply pipe are arranged in a one-to-one correspondence with the box body, and the outlet ends of the second liquid supply pipe are connected to the box body.

[0024] In some embodiments, there are multiple second control members, and the multiple second control members are disposed at the outlet end of the second liquid supply pipe in a one-to-one correspondence.

[0025] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the second control member; the controller opens or closes the second liquid supply pipe by controlling the second control member.

[0026] In some embodiments, the fire-fighting device further includes a drain assembly, the drain assembly being used to communicate with the accommodating cavity, and the drain assembly being configured to drain the fire-fighting liquid in the accommodating cavity;

[0027] And / or, the drain assembly is used to be arranged on the battery device, and the drain assembly is configured to drain the firefighting liquid in the battery device.

[0028] In some embodiments, the drain assembly further includes a first drain pipe, which is used to communicate with the accommodating cavity and drain the firefighting liquid in the accommodating cavity.

[0029] In some embodiments, the drainage assembly further includes a first drainage control member, which is disposed on the first drainage pipe to open or close the first drainage pipe.

[0030] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the first liquid discharge control component; the controller opens or closes the first liquid discharge pipe by controlling the first liquid discharge control component.

[0031] In some embodiments, the drain assembly further includes a second drain pipe, and the second drain pipe is used to connect the box of the battery device and the outside.

[0032] In some embodiments, the drainage assembly further includes a second drainage control member, which is disposed on the second drainage pipe to open or close the second drainage pipe.

[0033] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the second liquid discharge control component; the controller opens or closes the second liquid discharge pipe by controlling the second liquid discharge control component.

[0034] In some embodiments, the fire-fighting device further includes a liquid recovery component, which is connected to the drain component to recover the fire-fighting liquid discharged through the drain component.

[0035] In some embodiments, the liquid recovery assembly includes a collecting member connected to the drainage assembly.

[0036] In some embodiments, the liquid recovery assembly further comprises a processing element connected to the collecting element.

[0037] In some embodiments, the fire-fighting device further includes a fluid replenishing component, which is connected to the fluid storage component to replenish the fire-fighting fluid into the fluid storage component.

[0038] In some embodiments, the fire-fighting device further comprises a liquid detection element and a controller, wherein the liquid detection element is disposed in the liquid storage element;

[0039] The controller is electrically connected to the liquid detection component and the liquid replenishing component respectively. The controller responds to the detection signal of the liquid detection component to control the liquid replenishing component to replenish the firefighting liquid into the liquid storage component.

[0040] In some embodiments, the fire-fighting device further includes a gas fire-fighting assembly, which is configured to be disposed in the accommodating cavity and / or the battery device to introduce fire-fighting gas into the accommodating cavity and / or the battery device.

[0041] In some embodiments, the gas firefighting assembly includes a gas storage component, a gas pipeline, and a gas control component, wherein the gas pipeline is used to connect the gas storage component with the accommodating cavity and / or the battery device respectively;

[0042] The gas control component is provided on the gas pipeline to open or close the gas pipeline;

[0043] The gas control component is used to open the gas pipeline, so that the firefighting gas in the gas storage component enters the accommodating cavity and / or the battery device through the gas pipeline.

[0044] In some embodiments, the fire-fighting device further includes a controller, wherein the controller is electrically connected to the gas control component, and the controller controls the gas control component to open or close the gas pipeline.

[0045] In some embodiments, the fire-fighting device further includes a fan assembly, which is used to be arranged in the accommodating cavity and / or the battery device, and the fan assembly is configured to discharge the gas in the accommodating cavity and / or the battery device.

[0046] In some embodiments, the fire-fighting device further includes a controller, which is electrically connected to the fan assembly; the controller is used to control the start and stop of the fan assembly.

[0047] In a second aspect, the present application provides a method for controlling a fire-fighting device, which is applied to the fire-fighting device described in the first aspect; the method comprises:

[0048] According to the thermal runaway parameters and the preset thermal runaway parameters, the control component is controlled to open the liquid pipeline so that the fire-fighting liquid in the liquid storage component flows into the accommodating chamber and / or the battery device to reduce the temperature of the accommodating chamber and / or the battery device.

[0049] In some embodiments, the preset thermal runaway parameter includes a first preset thermal runaway parameter and a second preset thermal runaway parameter; the first preset thermal runaway parameter is less than the second preset thermal runaway parameter; and before controlling the control element to open the liquid pipeline, the control further includes:

[0050] Determining the magnitudes of the thermal runaway parameter, the first preset thermal runaway parameter, and the second preset thermal runaway parameter;

[0051] If the thermal runaway parameter is greater than or equal to the first preset thermal runaway parameter and less than the second preset thermal runaway parameter, the fan assembly is controlled to start to discharge the gaseous substances in the accommodating cavity and / or the battery device.

[0052] In some embodiments, the preset thermal runaway parameter includes a third preset thermal runaway parameter, and the third preset thermal runaway parameter is greater than the second preset thermal runaway parameter;

[0053] After the control blower assembly is started and before the control member is controlled to open the liquid pipeline, the method further includes:

[0054] Determining the magnitudes of the thermal runaway parameter, the second preset thermal runaway parameter, and the third preset thermal runaway parameter;

[0055] If the thermal runaway parameter is greater than or equal to the second preset thermal runaway parameter and less than the third preset thermal runaway parameter, the fan assembly is controlled to shut down and the gas fire fighting assembly is controlled to start to introduce fire fighting gas into the accommodating cavity and / or the battery device.

[0056] In some embodiments, controlling the control element to open the liquid pipeline according to the thermal runaway parameter and the preset thermal runaway parameter specifically includes:

[0057] Determining the magnitudes of the thermal runaway parameter and the third preset thermal runaway parameter;

[0058] If the thermal runaway parameter is greater than or equal to the third preset thermal runaway parameter, the control element is controlled to open the liquid pipeline.

[0059] In some embodiments, the second preset temperature parameter is less than the first preset temperature parameter; after controlling the control member to open the liquid pipeline, the method further includes:

[0060] Acquiring a first temperature parameter of the accommodating cavity and / or the battery device;

[0061] Determining the magnitude of the first temperature parameter and the first preset temperature parameter;

[0062] If the temperature parameter is greater than or equal to the first preset temperature parameter, controlling the liquid discharge component to start and obtaining a second temperature parameter;

[0063] The drain assembly and the liquid pipeline are closed according to the second temperature parameter and the second preset temperature parameter.

[0064] In some embodiments, the third preset temperature parameter is less than the second preset temperature parameter; and closing the drain assembly and the liquid pipeline according to the second temperature parameter and the second preset temperature parameter specifically includes:

[0065] Determining the magnitude of the second temperature parameter and the second preset temperature parameter;

[0066] If the second temperature parameter is less than or equal to the second preset temperature parameter, closing the drain assembly and the liquid pipeline, and obtaining the immersion time and a third temperature parameter of the accommodating chamber and / or the battery device;

[0067] The drainage component is controlled to start according to the immersion time and the preset immersion time, and the third temperature parameter and the third preset temperature parameter.

[0068] In some embodiments, the third preset temperature parameter is less than the second preset temperature parameter; and controlling the activation of the drainage assembly based on the immersion time and the preset immersion time, as well as the third temperature parameter and the third preset temperature parameter, specifically includes:

[0069] Determining the size of the immersion time and the preset immersion time, and determining the size of the third temperature parameter and the third preset temperature parameter;

[0070] If the immersion time is greater than or equal to the preset immersion time, and the third temperature parameter is less than or equal to the third preset temperature parameter, the drain assembly is controlled to start.

[0071] In some embodiments, the method further comprises:

[0072] Acquiring liquid parameters in the liquid storage component;

[0073] Determining the magnitude of the liquid parameter and the preset liquid parameter;

[0074] If the liquid parameter is less than the preset liquid parameter, the liquid replenishing component is controlled to replenish the fire-fighting liquid into the liquid storage component.

[0075] In a third aspect, an embodiment of the present application provides an energy storage system, comprising:

[0076] An energy storage cabin, wherein the energy storage cabin has a accommodating cavity;

[0077] a battery device, the battery device being disposed in the accommodating cavity;

[0078] The fire-fighting device described in the first aspect is arranged in the energy storage compartment and / or the battery device to reduce the temperature of the accommodating cavity and / or the battery device.

[0079] In some embodiments, a liquid storage component of the fire-fighting device is provided on the inner side of the top wall of the energy storage compartment;

[0080] And / or, a liquid storage component of the fire-fighting device is provided on the outer side of the top wall of the energy storage compartment.

[0081] In some embodiments, the liquid pipeline of the fire-fighting device is located in the accommodating cavity.

[0082] In some embodiments, the first liquid supply pipe of the fire-fighting device is disposed in the energy storage compartment.

[0083] In some embodiments, there are multiple accommodating cavities, and the multiple accommodating cavities are spaced apart along the first direction;

[0084] There are multiple battery devices, and the battery devices and the accommodating cavities are arranged in a one-to-one correspondence;

[0085] The first direction is perpendicular to the height direction of the energy storage compartment.

[0086] In some embodiments, the first drain pipe in the drain assembly of the fire-fighting device is disposed in the energy storage compartment and is in communication with the accommodating chamber to discharge the fire-fighting liquid in the accommodating chamber.

[0087] In some embodiments, the battery device includes a battery pack having a box; the box is connected to the liquid storage component through the liquid pipeline.

[0088] In some embodiments, there are multiple battery packs, and the multiple battery packs are arranged along the height direction of the energy storage compartment.

[0089] In some embodiments, the second drain pipe in the drain assembly of the fire-fighting device is connected to the box body and the outside of the energy storage cabin.

[0090] In some embodiments, the gas pipeline in the gas fire fighting assembly of the fire fighting device is respectively connected to the gas storage component in the gas fire fighting assembly and the energy storage cabin and / or the battery device.

[0091] In some embodiments, the fan assembly of the fire-fighting device is disposed in the energy storage compartment and / or the battery device.

[0092] The present application provides a fire-fighting device, a control method for a fire-fighting device, and an energy storage system. The fire-fighting device includes a liquid pipeline, a liquid storage element, and a control element. The liquid storage element is connected to a storage chamber and / or a battery device of the energy storage system via the liquid pipeline. The control element is disposed in the liquid pipeline to open or close the liquid pipeline. The control element opens the liquid pipeline to allow the fire-fighting liquid in the liquid storage element to flow into the corresponding storage chamber and / or battery device, thereby reducing the temperature of the storage chamber and / or battery device.

[0093] In the present application, the liquid storage element is connected to the storage chamber and / or battery device of the energy storage system through a liquid pipeline. Through such a setting, the flow path of the fire-fighting liquid is shortened, and the efficiency of the fire-fighting liquid entering the corresponding storage chamber and / or battery device is improved, so as to quickly cool the storage chamber and / or battery device and quickly suppress the thermal runaway of the battery device. Furthermore, the fire-fighting liquid can also be pre-stored in the liquid storage element. In the early stage of thermal runaway of the battery device, the fire-fighting liquid can be timely introduced into the corresponding storage chamber and / or battery device to quickly reduce the temperature of the storage chamber and / or battery device and suppress the thermal runaway of the battery device. In this way, the present application can improve the control efficiency of the energy storage system against thermal runaway, reduce the probability of fire, and improve the safety of the energy storage system through such a setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0095] Figure 1 A schematic diagram of a first energy storage system provided in an embodiment of the present application;

[0096] Figure 2 A schematic diagram of a second energy storage system provided in an embodiment of the present application;

[0097] Figure 3 A schematic diagram of a control method for a fire-fighting device provided in an embodiment of the present application;

[0098] Figure 4 This is a flow chart of a method for controlling a fire-fighting device according to an embodiment of the present application.

[0099] Description of reference numerals:

[0100] 100-Energy storage system;

[0101] 110- energy storage compartment; 111- storage cavity;

[0102] 120-battery device; 121-battery pack; 1211-box;

[0103] 130-liquid firefighting assembly; 131-liquid storage element; 132-first liquid supply pipe; 133-first control element; 134-second liquid supply pipe; 135-second control element;

[0104] 140- drainage assembly; 141- first drainage pipe; 142- first drainage control member; 143- second drainage pipe; 144- second drainage control member;

[0105] 150-Liquid recovery component; 151-Collection component; 152-Processing component;

[0106] 160-Fluid refill kit;

[0107] 170-Liquid detection parts;

[0108] 180-gas fire fighting components; 181-gas storage components; 182-gas pipelines; 183-gas control components;

[0109] 190-Thermal runaway detector. DETAILED DESCRIPTION

[0110] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0111] First, see Figure 1 and Figure 2 The embodiment of the present application provides an energy storage system 100, which can be used in photovoltaic power plants, wind power plants, etc. The embodiment of the present application does not make specific requirements on the specific application field of the energy storage system 100.

[0112] For example, in a photovoltaic power plant, the photovoltaic power plant includes photovoltaic panels, which can be electrically connected to the energy storage system 100. The photovoltaic panels convert light energy into electrical energy, which is then stored in the energy storage system 100, thereby avoiding excess electricity and improving energy utilization. In a wind power plant, wind turbines are electrically connected to the energy storage system 100 to store the electricity generated by the wind turbines.

[0113] Energy storage system 100 is often used outdoors. Therefore, in the embodiment of the present application, energy storage system 100 includes an energy storage compartment 110 and a battery device 120. Energy storage compartment 110 has a housing 111. Battery device 120 is disposed within housing 111. Energy storage compartment 110 protects battery device 120, preventing it from being directly exposed to the external environment. It also prevents damage to battery device 120 from dust, moisture, and other environmental factors, thereby extending the service life and reliability of battery device 120.

[0114] As the number of sites continues to expand, higher energy storage requirements are placed on the energy storage system 100. In related technologies, the energy density of the energy storage system 100 can be increased to meet these higher energy storage requirements. For example, the overall energy density of the energy storage system 100 can be increased by increasing the number of battery devices 120 or by improving the energy density of the battery devices 120.

[0115] However, as the energy density of the battery device 120 increases, the probability of thermal runaway of the battery device 120 increases during use. Once thermal runaway of such a battery device 120 occurs, the energy storage system 100 may cause a severe fire.

[0116] To address this issue, the energy storage system 100 in the embodiment of the present application further includes a fire-fighting device, which controls thermal runaway of the battery device 120 and rapidly reduces the temperature of the battery device 120 . This prevents heat spread from the battery device 120 after thermal runaway occurs, slows heat transfer, reduces the probability of a severe fire in the energy storage system 100 , and improves the safety of the energy storage system 100 .

[0117] In some embodiments, the fire-fighting device includes a liquid fire-fighting component 130, which includes a liquid pipeline and a liquid storage component 131. The liquid pipeline is located in the accommodating cavity 111; the liquid storage component 131 is arranged in the energy storage cabin 110, and the liquid storage component 131 is connected to the accommodating cavity 111 and / or the battery device 120 through the liquid pipeline.

[0118] It can be understood that the liquid storage component 131 is arranged in the energy storage compartment 110, and the fire-fighting liquid is stored in the liquid storage component 131. The liquid storage component 131 can be connected to the corresponding accommodating cavity 111 and / or the battery device 120 of the energy storage compartment 110 through a liquid pipeline, shortening the flow path of the fire-fighting liquid and reducing the flow time of the fire-fighting liquid, so that the fire-fighting liquid in the liquid storage component 131 can quickly pass into the accommodating cavity 111 and cool the battery device 120 in the accommodating cavity 111, or, the fire-fighting liquid in the liquid storage component 131 can quickly pass into the battery device 120, thereby realizing the fire-fighting liquid quickly cooling the battery device 120, delaying the heat spread of the battery device 120, and preventing fire caused by thermal runaway of the battery device 120, which can improve the safety of the energy storage system 100.

[0119] Although the liquid pipeline connects the liquid storage member 131 with the accommodating chamber 111 and / or the battery device 120, the liquid in the liquid storage member 131 does not need to be continuously passed into the accommodating chamber 111 and / or the battery device 120 to ensure the normal operation of the energy storage system 100. To this end, the liquid firefighting assembly 130 in the embodiment of the present application also includes a control member, which is arranged in the liquid pipeline to open or close the liquid pipeline; when the battery device 120 thermally runs away, the control member opens the liquid pipeline to allow the firefighting liquid in the liquid storage member 131 to pass into the accommodating chamber 111 and / or the battery device 120, thereby cooling the accommodating chamber 111 and / or the battery device 120.

[0120] In this way, the control element is configured to control the connectivity of the liquid pipeline, ensuring the normal operation of the energy storage function of the energy storage system 100. Furthermore, in the event of thermal runaway of the battery device 120, the control element can promptly control the firefighting liquid to quickly perform firefighting operations, thereby improving the safety of the energy storage system 100.

[0121] It should be noted that the firefighting liquid in the embodiments of the present application may be an aqueous solution, etc. The aqueous solution may be a salt solution, such as a sodium chloride solution, etc., or an aqueous solution to which a fire extinguishing component is added, such as a micellar enhancer.

[0122] In some embodiments, the control element may be a control valve, etc., which is in a normally closed state to shut off the liquid pipeline when the energy storage system 100 is operating normally, thereby preventing the fire-fighting liquid from entering the accommodating chamber 111 and avoiding damage to the battery device 120 and the circuit within the energy storage system 100.

[0123] In some embodiments, the opening and closing of the control member can be controlled by an automated control program or manually controlled, which is not specifically required in the embodiments of the present application.

[0124] Optionally, the liquid storage member 131 is disposed on top of the energy storage compartment 110. In this way, during operation of the energy storage system 100, the heat inside the energy storage compartment 110 can naturally rise, and the liquid storage member 131 and the energy storage compartment 110 are thermally conductive, so that the firefighting liquid in the liquid storage member 131 can cool the energy storage compartment 110, thereby maintaining a stable temperature inside the energy storage compartment 110, improving the thermal management efficiency of the energy storage system 100, and preventing the battery device 120 from overheating.

[0125] In addition, the liquid storage member 131 is arranged on the top of the energy storage chamber 110 to increase the gravitational potential energy of the fire-fighting liquid. The conversion between the gravitational potential energy and kinetic energy of the fire-fighting liquid can be used to assist the flow of the fire-fighting liquid, thereby improving the fluidity of the fire-fighting liquid and reducing the dependence of the fire-fighting liquid flow on the pump, thereby reducing the energy consumption of the fire-fighting operation of the energy storage system 100. Furthermore, the liquid storage member 131 is arranged on the top of the energy storage chamber 110, which facilitates the layout of the liquid pipeline and can reduce the length of the liquid pipeline, thereby reducing the material cost of the energy storage system 100. In the embodiment of the present application, by arranging the liquid storage member 131 on the top of the energy storage chamber 110, the connection between the liquid fire-fighting assembly 130 and the energy storage chamber 110 is made more compact, thereby reducing the space occupied by the energy storage system 100.

[0126] In some embodiments, the liquid storage member 131 is disposed on the inner side of the top wall of the energy storage compartment 110. This allows the liquid storage member 131 and the inner side of the top wall of the energy storage compartment 110 to directly contact the heat within the accommodating cavity 111, thereby improving heat exchange efficiency and more effectively managing the temperature within the energy storage compartment 110. Furthermore, the energy storage compartment 110 can provide additional protection for the liquid storage member 131, preventing it from being affected by external environmental factors (such as physical impact and weather changes), thereby increasing the safety and reliability of the energy storage system 100.

[0127] In some embodiments, the liquid storage member 131 is disposed outside the top wall of the energy storage compartment 110. This allows for more efficient heat dissipation to the external environment, reducing heat accumulation within the energy storage compartment 110 and improving the overall heat dissipation efficiency of the energy storage compartment 110. Furthermore, the location of the liquid storage member 131 outside the energy storage compartment 110 facilitates installation and maintenance of the liquid storage member 131, as well as refilling operations.

[0128] It should be noted that the liquid storage component 131 in the embodiment of the present application can be arranged only on the inner side of the top wall of the energy storage compartment 110, or only on the outer side of the top wall of the energy storage compartment 110, or the liquid storage component 131 can be arranged on both the inner side and the outer side of the top wall of the energy storage compartment 110. The embodiment of the present application does not make specific requirements for this.

[0129] In some embodiments, the fire-fighting device further includes a thermal runaway detector 190 , which can be disposed on the energy storage compartment 110 and / or the battery device 120 to obtain thermal runaway parameters in the energy storage compartment 110 and / or the battery device 120 .

[0130] It will be appreciated that the fire-fighting device in the embodiment of the present application further includes a controller, which can be electrically connected to the control element and the thermal runaway detector 190. The controller responds to the detection signal of the thermal runaway detector 190 to control the control element to open or close the liquid pipeline. This allows the liquid fire-fighting assembly 130 to respond quickly when the battery device 120 thermally runs away, quickly introducing the fire-fighting liquid into the accommodating chamber 111 to cool the battery device 120, slow the spread of heat from the battery device 120, and further prevent the energy storage system 100 from exploding or other severe fires.

[0131] It should be noted that the thermal runaway detector 190 in the embodiment of the present application includes a temperature sensor, a smoke concentration sensor, an acoustic sensor, an image sensor, a combustible gas sensor, and the like. The thermal runaway detector 190 can be any one of these sensors, or a combination of these sensors, and the embodiment of the present application does not impose specific requirements on this. The electrical connection between the controller and the control element in the embodiment of the present application, as well as the thermal runaway detector 190, establishes a signal transmission channel, enabling the controller to control the control element to open or close the liquid pipeline.

[0132] There are many ways to layout the liquid pipeline in the accommodating chamber 111. As an optional embodiment, the liquid pipeline includes a first liquid supply pipe 132, which is arranged in the energy storage compartment 110 and connects the liquid storage part 131 and the accommodating chamber 111.

[0133] For example, the first liquid supply pipe 132 may be disposed at the top, side, bottom, etc. of the inner side of the energy storage compartment 110 , but this embodiment of the present application does not require this.

[0134] It should be noted that in the embodiment of the present application, the control member is disposed on the liquid pipeline, and the first liquid supply pipe 132 can serve as a main pipe or a branch pipe. The control member can be disposed on the first liquid supply pipe 132 or not. It is only necessary to ensure that the control member opens the liquid pipeline, allowing the firefighting liquid to enter the accommodating chamber 111 through the first liquid supply pipe 132.

[0135] In some embodiments, the control element includes a first control element 133, which is disposed on the first liquid supply pipe 132 and is used to open or close the first liquid supply pipe 132. When the battery device 120 experiences thermal runaway, the first control element 133 opens the first liquid supply pipe 132 to connect the liquid storage element 131 with the accommodating chamber 111. Thus, opening the first liquid supply pipe 132 by the first control element 133 allows for rapid supply of firefighting liquid to the accommodating chamber 111, thereby rapidly responding to thermal runaway of the battery device 120 and rapidly reducing the temperature of the battery device 120, thereby reducing the risk of thermal runaway and improving the safety and reliability of the energy storage system 100.

[0136] It should be noted that the first control component 133 in the embodiment of the present application may be a thermal valve, or a control valve, etc., and the embodiment of the present application does not make specific requirements for this.

[0137] See Figure 1 and Figure 2 In some embodiments, the energy storage compartment 110 has a plurality of accommodating cavities 111, which are spaced apart along a first direction. The first direction is perpendicular to the height direction of the energy storage compartment 110. In other words, the first direction in the embodiments of the present application may be along the length direction or the width direction of the energy storage compartment 110.

[0138] The bulkhead of the energy storage cabin 110 forms an accommodating space. A plurality of partitions are provided in the energy storage cabin 110 . The plurality of partitions are spaced apart along a first direction to divide the accommodating space into a plurality of independent accommodating chambers 111 .

[0139] In some embodiments, there are multiple battery devices 120, and each battery device 120 corresponds to each of the accommodating chambers 111. This arrangement of the battery devices 120 and the accommodating chambers 111 makes the multiple battery devices 120 independent of each other, and provides fault isolation for the battery devices 120, thereby reducing the impact of thermal runaway of a battery device 120 on other battery devices 120, thereby improving the safety and operational reliability of the energy storage system 100.

[0140] In the embodiment of the present application, there are multiple first liquid supply tubes 132, each corresponding to the accommodating chamber 111. It can be understood that each first liquid supply tube 132 connects the accommodating chamber 111 and the liquid storage member 131. There are multiple first control members 133, each corresponding to the first liquid supply tube 132, to open or close the corresponding first liquid supply tube 132.

[0141] Thus, when a battery assembly 120 in a particular accommodating chamber 111 experiences thermal runaway, the first control member 133 corresponding to that accommodating chamber 111 controls the opening of the first liquid supply pipe 132, thereby connecting that accommodating chamber 111 with the liquid storage member 131 via the first liquid supply pipe 132. Firefighting liquid in the liquid storage member 131 flows into the accommodating chamber 111, thereby controlling the thermal runaway of the battery assembly 120. It will be appreciated that other accommodating chambers 111 and liquid storage members 131 are disconnected, and these battery assemblies 120 can continue to function normally, thus reducing unnecessary damage to the battery assemblies 120 and improving the economic efficiency of the energy storage system 100.

[0142] In some embodiments, the first liquid supply pipe 132 has a liquid outlet; along the height direction of the energy storage compartment 110 , the liquid outlet of the first liquid supply pipe 132 is located higher than the top of the battery device 120 .

[0143] In the embodiment of the present application, by arranging the liquid outlet of the first liquid supply pipe 132 at the top of the energy storage chamber 110, the firefighting liquid in the liquid storage member 131 is passed through the first liquid supply pipe 132 along the height direction of the energy storage chamber 110 into the accommodating chamber 111. During the flow of the firefighting liquid, the gravitational potential energy can be increased through the first liquid supply pipe 132. Through the conversion between gravitational potential energy and kinetic energy, the energy storage system 100 does not need to provide an external force to the flow of the firefighting liquid, thereby reducing the system energy consumption of the energy storage system 100 during this process. Furthermore, the first liquid supply pipe 132 is arranged at the top of the energy storage chamber 110 to separate the installation area from the battery device 120 in the energy storage chamber 110, facilitating the installation and maintenance of the first liquid supply pipe 132 and the battery device 120. It can also reduce the piping layout of the first liquid supply pipe 132, thereby reducing the usage of the first liquid supply pipe 132 and thus reducing the cost of the energy storage system 100. In addition, in the embodiment of the present application, the liquid outlet is higher than the top of the battery device 120. When the fire-fighting liquid flows out, it can naturally flow to the battery device 120 by the action of gravity, thereby reducing the energy consumption of the energy storage system 100 and the complexity of the pipeline layout.

[0144] In the embodiment of the present application, the fire-fighting device further includes a controller, which is electrically connected to the first control component 133 ; the controller opens or closes the first liquid supply pipe 132 by controlling the first control component 133 .

[0145] It should be noted that the controller in the embodiment of the present application and the controller in the aforementioned embodiment can be the same controller. The controller responds to the detection signal of the thermal runaway detector 190, processes and determines the detection signal, and then controls the first control member 133 to open or close the first liquid supply pipe 132.

[0146] See Figure 2In some embodiments, the battery device 120 includes a battery pack 121 having a housing 1211 ; the housing 1211 is connected to the liquid storage member 131 via a liquid pipeline. This configuration allows the battery cells within the housing of the battery pack 121 to be quickly cooled to prevent thermal runaway in the event of thermal runaway. This allows the thermal runaway to be quickly controlled, thereby reducing the severity of fire in the energy storage system 100 and improving the safety of the energy storage system 100.

[0147] See Figure 2 The liquid pipeline further includes a second liquid supply pipe 134 , which connects the box body 1211 and the liquid storage component 131 .

[0148] It should be noted that the second liquid supply pipe 134 can serve as a branch pipe of the liquid pipeline, and the control component is arranged in the liquid pipeline to control the liquid pipeline to ensure that the firefighting liquid in the liquid storage component 131 can flow into the box body 1211.

[0149] In some embodiments, the control unit includes a second control unit 135, which is disposed on the second liquid supply pipe 134 to open or close the second liquid supply pipe 134. When the battery pack 121 experiences thermal runaway, the second control unit 135 opens the second liquid supply pipe 134, thereby connecting the liquid storage unit 131 and the tank 1211. Thus, opening the second liquid supply pipe 134 by the second control unit 135 allows the firefighting liquid to be quickly supplied to the tank 1211, thereby quickly responding to thermal runaway of the battery pack 121, thereby reducing the risk of thermal runaway and improving the safety and reliability of the energy storage system 100.

[0150] It should be noted that the second control component 135 in the embodiment of the present application may be a thermal valve, or a control valve, etc., and the embodiment of the present application does not make specific requirements for this.

[0151] In some embodiments, multiple battery packs 121 are provided to increase the energy density of the energy storage system 100. Multiple battery packs 121 are arranged along the height of the energy storage compartment 110, so that the battery devices 120 are concentrated in the accommodating cavity 111, thereby reducing the space occupied by the battery devices 120.

[0152] In the embodiment of the present application, the second liquid supply pipe 134 has multiple outlets, each of which corresponds to the housing 1211. The outlet of the second liquid supply pipe 134 is connected to the housing 1211. Thus, the connection between the second liquid supply pipe 134 and the multiple housings 1211 allows the firefighting liquid to reach each battery pack 121, and thermal runaway of the battery packs 121 can be precisely controlled.

[0153] In some embodiments, there are multiple second control components 135, each corresponding to the outlet end of the second liquid supply pipe 134. Thus, when a battery pack 121 experiences thermal runaway, the second control component 135 corresponding to that battery pack 121 controls the outlet end of the second liquid supply pipe 134 to open, allowing the housing 1211 of that battery pack 121 to communicate with the liquid storage element 131 via the second liquid supply pipe 134. Firefighting liquid in the liquid storage element 131 flows into the housing 1211 to control thermal runaway of that battery pack 121. It will be appreciated that other battery packs 121 are disconnected from the liquid storage element 131, allowing these battery packs 121 to continue to function normally, reducing unnecessary damage to the battery packs 121 and improving the economic efficiency of the energy storage system 100.

[0154] In some embodiments, the controller and the second control member 135 are electrically connected; the controller opens or closes the second liquid supply pipe 134 by controlling the second control member 135 .

[0155] Various implementations of the energy storage system 100 will be described below in conjunction with the drainage function of the energy storage system 100 .

[0156] In some embodiments, the fire-fighting device further includes a drain assembly 140 , which is disposed in the energy storage compartment 110 and communicates with the accommodating cavity 111 of the energy storage compartment 110 . The drain assembly 140 is configured to drain the fire-fighting liquid in the accommodating cavity 111 .

[0157] In some embodiments, the drain assembly 140 further includes a first drain pipe 141 , which is in communication with the accommodating chamber 111 to drain the firefighting liquid in the accommodating chamber 111 .

[0158] See Figure 1 In the embodiment of the present application, the first drain pipe 141 can be disposed at the bottom of the energy storage compartment 110. The first drain pipe 141 connects the accommodating chamber 111 of the energy storage compartment 110 with the exterior of the energy storage compartment 110 to drain the firefighting liquid within the accommodating chamber 111. Thus, through the interaction of the liquid pipeline and the first drain pipe 141, the firefighting liquid within the accommodating chamber 111 can flow, continuously cooling the battery device 120 experiencing thermal runaway, slowing the spread of heat from the battery device 120, and thereby improving the safety and reliability of the energy storage system 100.

[0159] In some embodiments, the drain assembly 140 further includes a first drain control member 142, which is disposed on the first drain pipe 141 to open or close the first drain pipe 141. This allows the draining process of the energy storage compartment 110 to be controlled, prolonging the contact time between the firefighting liquid and the battery device 120 and allowing the battery device 120 to cool down quickly.

[0160] In some embodiments, the controller is electrically connected to the first drain control element 142 ; the controller can send instructions to the first drain control element 142 to control the first drain control element 142 to open or close the first drain pipe 141 . In this way, the degree to which the firefighting liquid controls thermal runaway in the battery device 120 can be combined to precisely control the drain, thereby enhancing the effectiveness of controlling thermal runaway in the energy storage system 100 .

[0161] See Figure 2 In some embodiments, the drain assembly 140 is further disposed in the battery device 120 to drain the firefighting liquid in the battery device 120 .

[0162] Exemplarily, the drain assembly 140 further includes a second drain pipe 143, which connects the housing 1211 of the battery pack 120 with the outside. Thus, the second drain pipe 143 connects the housing 1211 of the battery pack 121 with the outside to drain the firefighting liquid within the battery pack 121. This allows the firefighting liquid within the housing 1211 to flow, thereby controlling thermal runaway of the battery pack 121 and improving the safety of the energy storage system 100.

[0163] It should be noted that the "outside" in this section refers to the outside of the housing 1211 of the battery device 120. That is, the second drain pipe 143 can discharge the firefighting liquid in the housing 121 of the battery device 120 into the accommodating chamber 111, and / or the second drain pipe 143 can discharge the firefighting liquid in the housing 1211 of the battery device 120 directly to the outside of the energy storage compartment 110, and this section does not limit this.

[0164] In some embodiments, the drain assembly 140 further includes a second drain control member 144, which is disposed on the second drain pipe 143 to open or close the second drain pipe 143. This allows the draining process of the battery pack 121 to be controlled, prolonging the contact time between the firefighting liquid and the battery pack 121 and allowing the battery pack 121 to cool down quickly.

[0165] In some embodiments, the controller is electrically connected to the second drain control element 144 ; the controller can send instructions to the second drain control element 144 to control the second drain control element 144 to open or close the second drain pipe 143 . This allows precise control of draining liquid based on the degree of thermal runaway control within the battery pack 121 , thereby enhancing the effectiveness of thermal runaway control within the energy storage system 100 .

[0166] It is not difficult to understand that after the battery device 120 experiences thermal runaway, it will leak. After the fire-fighting liquid enters the accommodating cavity 111 and / or the battery device 120, the fire-fighting liquid will mix with the electrolyte and some substances in the battery device 120. If these substances are directly discharged, they will cause harm to the environment.

[0167] Therefore, the firefighting device in the embodiment of the present application further includes a liquid recovery assembly 150, which is connected to the drain assembly 140 to recover the firefighting liquid discharged by the drain assembly 140. In this way, the firefighting liquid is recovered by the liquid recovery assembly 150, thereby reducing the environmental damage caused by the energy storage system 100.

[0168] In some embodiments, the liquid recovery assembly 150 may be disposed outside the energy storage compartment 110 .

[0169] In some embodiments, the liquid recovery assembly 150 includes a collecting member 151 , which is connected to the drainage assembly 140 .

[0170] For example, the collecting member 151 may be connected to the first drain pipe 141 to collect the firefighting liquid discharged from the accommodating chamber 111 through the first drain pipe 141 . The collecting member 151 may be connected to the second drain pipe 143 to collect the firefighting liquid discharged from the battery pack 121 through the second drain pipe 143 .

[0171] It should be noted that the collecting component 151 includes a collecting box, a collecting pool, etc., and the embodiment of the present application does not make specific requirements for this.

[0172] In some embodiments, the liquid recovery assembly 150 further includes a processing unit 152 connected to the collection unit 151. Thus, the processing unit 152 can store a portion of the firefighting liquid and simultaneously extract and process recyclable substances from the firefighting liquid so that the treated firefighting liquid meets discharge standards.

[0173] Exemplarily, the processing part 152 includes a processing box, a processing pool, etc., which is not required in the embodiment of the present application.

[0174] It is not difficult to understand that as the fire-fighting liquid in the accommodating chamber 111 and / or the battery device 120 is discharged, the battery device 120 is still in a state of thermal runaway, and the fire-fighting liquid cannot immerse the battery device 120. At this time, it is necessary to replenish the fire-fighting liquid into the liquid storage part 131 in time.

[0175] To this end, the fire-fighting device in the embodiment of the present application further includes a liquid replenishing component 160 , which is connected to the liquid storage component 131 to replenish fire-fighting liquid into the liquid storage component 131 .

[0176] Exemplarily, the fluid replenishing component 160 may be disposed outside the energy storage compartment 110 . The fluid replenishing component 160 may be a water tower, a water pool, etc., but this embodiment of the present application does not require this.

[0177] In some embodiments, the fire-fighting device further includes a liquid detection component 170 and a controller, wherein the liquid detection component 170 is disposed in the liquid storage component 131; the controller is electrically connected to the liquid detection component 170 and the liquid replenishing component 160, respectively, and the controller responds to the detection signal of the liquid detection component 170 to control the liquid replenishing component 160 to replenish the fire-fighting liquid into the liquid storage component 131.

[0178] In this way, the embodiment of the present application detects the liquid in the liquid storage component 131 in real time through the liquid detection component 170, and the controller can automatically control the operation of the liquid replenishing component 160 according to the detected signal, which can reduce the need for manual monitoring and operation, and improve the liquid replenishment efficiency of the energy storage system 100, the control efficiency of thermal runaway, and the reliability of the energy storage system 100.

[0179] It should be noted that the liquid detection component 170 in the embodiment of the present application includes a flow meter, a liquid level sensor, etc., and the embodiment of the present application does not make specific requirements for this.

[0180] In some embodiments, the firefighting device further includes a gas firefighting assembly 180, which is disposed in the accommodating chamber 111 and / or the battery device 120 to introduce firefighting gas into the accommodating chamber 111 and / or the battery device 120. In this way, the energy storage system 100 has multiple different thermal runaway firefighting methods, thereby enhancing the firefighting diversity of the energy storage system 100.

[0181] For example, the firefighting gas may be perfluorohexanone gas, heptafluoropropane gas, etc., and the embodiments of the present application do not make specific requirements for this.

[0182] In some embodiments, the gas fire-fighting assembly 180 includes a gas storage member 181, a gas pipeline 182 and a gas control member 183, wherein the gas pipeline 182 respectively connects the gas storage member 181 with the accommodating cavity 111 and / or the battery device 120; the gas control member 183 is arranged on the gas pipeline 182 to open or close the gas pipeline 182; when the battery device 120 thermally runs away, the gas control member 183 opens the gas pipeline 182, so that the fire-fighting gas in the gas storage member 181 enters the accommodating cavity 111 and / or the battery device 120 through the gas pipeline 182.

[0183] In the embodiment of the present application, the gas control component 183 responds quickly to quickly open the gas line 182 and release the firefighting gas. The firefighting gas reduces the temperature of the accommodating chamber 111 and / or the battery device 120, and suppresses the flame or temperature of the battery device 120 that may cause thermal runaway, thereby suppressing the spread of heat in the battery device 120 and reducing other hazards caused by thermal runaway of the battery device 120.

[0184] In some embodiments, the firefighting device further includes a controller electrically connected to a gas control element 183. The controller controls the gas control element 183 to open or close the gas line 182. In this way, combined with the detection of the thermal runaway detector 190, the controller's control of the gas control element 183 allows for the rapid release of firefighting gas, thereby quickly reducing the temperature rise and flames caused by thermal runaway of the battery device 120, thereby improving the safety of the energy storage system 100.

[0185] It should be noted that when there are multiple accommodating cavities 111, the gas pipeline 182 has multiple gas outlets, and the gas outlets and accommodating cavities 111 are arranged in a one-to-one correspondence, so that each accommodating cavity 111 can be filled with firefighting gas, further improving the safety of the energy storage system 100.

[0186] In some embodiments, the fire-fighting device further includes a blower assembly, which is disposed in the accommodating chamber 111 and / or the battery device 120, and is configured to discharge gaseous substances within the accommodating chamber 111 and / or the battery device 120. Thus, as the blower assembly is activated, gaseous substances such as smoke and flammable gases within the accommodating chamber 111 of the energy storage compartment 110 can be promptly discharged to help regulate the pressure within the energy storage compartment 110 and prevent overpressure caused by gas accumulation, thereby protecting the structure and internal equipment of the energy storage compartment 110. And / or, as the blower assembly is activated, gaseous substances such as smoke and flammable gases within the battery device 120 can be promptly discharged to help regulate the pressure within the battery device 120 and prevent overpressure caused by gas accumulation, thereby protecting the structure and internal equipment of the battery device 120.

[0187] It should be noted that when there are multiple accommodating cavities 111 , there are multiple fan assemblies, and the fan assemblies are arranged in a one-to-one correspondence in the accommodating cavities 111 , so that the gas in each accommodating cavity 111 can be discharged, thereby improving the safety of the energy storage system 100 .

[0188] It is easy to understand that when there are multiple battery devices 120 , there are also multiple fan assemblies, which are arranged one-to-one in the battery devices 120 , so that the gas in each battery device 120 can be discharged, thereby improving the safety of the energy storage system 100 .

[0189] It can be understood that the gaseous substances in the embodiments of the present application include: air, combustible gas, steam, smoke, etc.

[0190] Optionally, the firefighting device further includes a controller electrically connected to the fan assembly; the controller is configured to control the start and stop of the fan assembly. Thus, by controlling the start and stop of the fan assembly by the controller, heat can be dissipated and cooled in a timely manner from the accommodating chamber 111 of the energy storage compartment 110 and / or the battery device 120, thereby maintaining a stable operating temperature of the accommodating chamber 111 and / or the battery device 120, thereby extending the service life of the battery device 120 and improving the operating efficiency of the energy storage system 100.

[0191] Also, see Figure 3 The embodiment of the present application may further provide a method for controlling a fire-fighting device, which is applied to the fire-fighting device provided in the first aspect. The method comprises:

[0192] According to the thermal runaway parameters and the preset thermal runaway parameters, the control component is controlled to open the liquid pipeline so that the fire-fighting liquid in the liquid storage component 131 flows into the accommodating chamber 111 and / or the battery device 120 to reduce the temperature of the accommodating chamber 111 and / or the battery device 120.

[0193] In some embodiments, the thermal runaway parameters can be obtained by installing a thermal runaway detector 190 in the energy storage compartment 110. The thermal runaway parameters include smoke concentration, temperature, combustible gas concentration, etc.

[0194] After obtaining the above-mentioned thermal runaway parameters, the controller compares and judges the above-mentioned thermal runaway parameters with preset thermal runaway parameters, and controls the opening and closing of the control component based on the judgment result. Therefore, when thermal runaway occurs in the battery device 120, the liquid pipeline is quickly opened, so that the fire-fighting liquid in the liquid storage component 131 is quickly passed into the accommodating chamber 111 and / or the battery device 120, and the accommodating chamber 111 and / or the battery device 120 are cooled in time to suppress the heat spread of the battery device 120, reduce the probability of the battery device 120 exploding and causing a serious fire, and improve the efficiency of the energy storage system 100 in controlling thermal runaway and the safety of the energy storage system 100.

[0195] Exemplarily, when the battery device 120 is a battery pack 121, the battery pack 121 has a box 1211, and the box 1211 is connected to the liquid storage component 131 through a liquid pipeline. In this way, the controller controls the control component according to the thermal runaway parameters and the preset thermal runaway parameters to open the liquid pipeline, so that the fire-fighting liquid flows into the box 1211, thereby suppressing the thermal runaway of the battery pack 121.

[0196] See Figure 4 In some embodiments, the preset thermal runaway parameter includes a first preset thermal runaway parameter and a second preset thermal runaway parameter; the first preset thermal runaway parameter is less than the second preset thermal runaway parameter; before controlling the control element to open the liquid pipeline, the method further includes:

[0197] Determine the magnitudes of the thermal runaway parameter, the first preset thermal runaway parameter, and the second preset thermal runaway parameter.

[0198] If the thermal runaway parameter is greater than or equal to the first preset thermal runaway parameter and less than the second preset thermal runaway parameter, the fan assembly is controlled to start to discharge the gaseous substances in the accommodating chamber 111 and / or the battery device 120 .

[0199] It is understood that the degree of thermal runaway in the battery device 120 varies. In the early stages of thermal runaway, the battery device 120 temperature rises and gradually produces smoke, etc. At this time, the thermal runaway parameters obtained by the thermal runaway detector 190 are the concentration of the combustible gas and the concentration of the smoke. The corresponding first preset thermal runaway parameters correspond to the concentration of the combustible gas and the concentration of the smoke. The combustible gas is hydrogen, etc.

[0200] For example, when the first preset thermal runaway parameter is the concentration of the combustible gas, the combustible gas is carbon monoxide and / or hydrogen, and the preset concentration of carbon monoxide is 100×10 -6 (volume fraction), the preset hydrogen concentration is 110×10 -6 (volume fraction).

[0201] When the first preset thermal runaway parameter is the concentration of smoke, the preset concentration of smoke is 0.2 db / m.

[0202] Exemplarily, the second preset thermal runaway parameter includes the concentration of combustible gas and the concentration of smoke.

[0203] For example, the combustible gas is carbon monoxide and / or hydrogen, and the preset concentration of carbon monoxide is 200×10 -6 (volume fraction), the preset hydrogen concentration is 200×10 -6 (Volume fraction); the concentration of smoke can be 0.4db / m.

[0204] When the concentration of combustible gas and / or smoke detected by the controller is equal to or greater than a first preset thermal runaway parameter and less than a second preset thermal runaway parameter, the fan assembly is activated to exhaust combustible gas, smoke, and other gaseous substances within the accommodating chamber 111 and / or the battery device 120 through the fan assembly, thereby preventing the energy storage system 100 from exploding due to excessive smoke and combustible gas concentrations. At the same time, the fan assembly accelerates air flow, which can also slow down the spread of heat from the battery device 120 to a certain extent.

[0205] It is easy to understand that as smoke and combustible gas are discharged, the thermal runaway of the battery device 120 may not be completely suppressed, and the temperature of the accommodating cavity 111 and / or the battery device 120 is still rising.

[0206] In some embodiments, the preset thermal runaway parameter includes a third preset thermal runaway parameter, and the third preset thermal runaway parameter is greater than the second preset thermal runaway parameter.

[0207] After controlling the blower assembly to start, and before controlling the control to open the liquid line, it also includes:

[0208] Determine the magnitudes of the thermal runaway parameter, the second preset thermal runaway parameter, and the third preset thermal runaway parameter.

[0209] If the thermal runaway parameter is greater than or equal to the second preset thermal runaway parameter and less than the third preset thermal runaway parameter, the fan assembly is controlled to shut down and the gas fire fighting assembly 180 is controlled to start to introduce fire fighting gas into the accommodating chamber 111 .

[0210] When the thermal runaway parameter obtained by the controller is greater than or equal to the second preset thermal runaway parameter and less than the third preset thermal runaway parameter, the fan assembly is shut down, the energy storage cabin 110 forms a sealed environment, and the gas fire fighting assembly 180 is started again to introduce fire fighting gas into the accommodating cavity 111 through the gas fire fighting assembly 180. The fire fighting gas cools the battery device 120. At the same time, the fire fighting gas also isolates the combustible gas in the energy storage cabin 110 from contact with the battery device 120, forming a suffocating effect, and suppressing thermal runaway of the battery device 120, thereby reducing the probability of the battery device 120 causing an explosion in the energy storage system 100.

[0211] The second preset thermal runaway parameters include the concentration of combustible gas, the concentration of smoke, the temperature inside the energy storage compartment 110 , the temperature of the battery device 120 , and the like.

[0212] For example, the second preset thermal runaway parameter includes: the combustible gas is carbon monoxide and / or hydrogen, and the preset concentration of carbon monoxide is 300×10 -6 (volume fraction), the preset hydrogen concentration is 300×10 -6 (volume fraction); the concentration of smoke may be 0.4 db / m; the temperature inside the energy storage compartment 110 is 80°C; and the temperature of the battery device 120 is 100°C.

[0213] The third preset thermal runaway parameters include the concentration of combustible gas, the concentration of smoke, the temperature inside the energy storage compartment 110 , the temperature of the battery device 120 , and the like.

[0214] For example, the third preset thermal runaway parameter includes: the combustible gas is carbon monoxide and / or hydrogen, and the preset concentration of carbon monoxide is 4×10 -6 (volume fraction), the preset hydrogen concentration is 4×10 -6 (volume fraction); the concentration of the smoke may be 2 db / m; the temperature in the energy storage compartment 110 may be 150°C; and the temperature of the battery device 120 may be 400°C.

[0215] In an optional embodiment of the present application, controlling the control element to open the liquid pipeline according to the thermal runaway parameter and the preset thermal runaway parameter specifically includes:

[0216] The magnitudes of the thermal runaway parameter and the third preset thermal runaway parameter are determined.

[0217] If the thermal runaway parameter is greater than or equal to a third preset thermal runaway parameter, the control element is controlled to open the liquid pipeline.

[0218] During the use of the firefighting gas stored in the gas firefighting assembly 180, and after the firefighting gas is completely used, the temperature of the battery device 120 decreases, and the thermal runaway of the battery device 120 is completely controlled. However, there is also a situation where the temperature of the battery device 120 temporarily decreases while the thermal runaway of the battery device 120 continues. In this case, the battery device 120 may reignite. Therefore, it is necessary to further combine the liquid firefighting assembly 130 to perform firefighting operations on the battery device 120 so that the thermal runaway of the battery device 120 is completely suppressed.

[0219] The controller obtains the thermal runaway parameters and, by comparing them with third preset thermal runaway parameters, controls the activation of the liquid firefighting assembly 130, thereby opening the liquid pipeline and allowing the firefighting liquid stored in the liquid reservoir 131 to flow into the corresponding accommodating cavity 111 and / or the housing 1211 of the battery pack 121. This allows the firefighting liquid to immerse the battery device 120, thereby directly cooling the battery device 120. Alternatively, the firefighting liquid enters the housing 1211 of the battery pack 121 to immerse the cells within the housing 1211, thereby suppressing the spread of heat from the battery device 120 and improving the efficiency of the energy storage system 100 in preventing thermal runaway, as well as the safety and reliability of the energy storage system 100.

[0220] It should be noted that the third preset thermal runaway parameter includes: the temperature in the accommodating cavity 111 , the temperature of the battery device 120 , the temperature of the box 1211 of the battery pack 121 , and the like.

[0221] In an optional embodiment, the third preset thermal runaway parameter is a temperature value of the corresponding battery device 120, which may be greater than or equal to 200°C. For example, 200°C, 220°C, 250°C, 280°C, 290°C, 300°C, 350°C, etc. This embodiment of the application does not impose specific requirements on this.

[0222] As the firefighting liquid enters the accommodating chamber 111, it immerses the battery assembly 120 in the accommodating chamber 111 to cool it. The firefighting liquid then enters the housing 1211 of the battery pack 121, immersing the battery cells in the housing 1211 to cool it. During the cooling process, heat conduction occurs between the firefighting liquid and the battery assembly 120 and cells, causing the firefighting liquid to heat up. The cooling effect between the firefighting liquid and the battery assembly 120 and cells in the battery pack 121 gradually decreases, necessitating the introduction of new firefighting liquid to continuously cool the battery assembly 120 and cells.

[0223] In some embodiments, the second preset temperature parameter is less than the first preset temperature parameter; after controlling the control element to open the liquid pipeline, the method further includes:

[0224] A first temperature parameter of at least one of the accommodating cavity 111 and the battery device 120 is obtained.

[0225] Determine the magnitude of the first temperature parameter and the first preset temperature parameter.

[0226] If the temperature parameter is greater than or equal to the first preset temperature parameter, the drain assembly 140 is controlled to start and obtain the second temperature parameter.

[0227] According to the second temperature parameter and the second preset temperature parameter, the drain assembly 140 and the liquid pipeline are closed.

[0228] In this embodiment of the present application, the thermal runaway detector 190 can detect a first temperature parameter in the accommodating chamber 111. Based on the magnitude of the first temperature parameter and a first preset temperature parameter, the controller activates the drain assembly 140 to drain the liquid from the accommodating chamber 111. During this process, the liquid pipeline remains open, allowing the firefighting liquid to continue entering the accommodating chamber 111. This allows the battery device 120 to be cooled by immersion, thereby preventing the battery device 120 from reigniting, further enhancing the safety of the energy storage system 100.

[0229] Exemplarily, the first preset temperature parameter is greater than or equal to 70° C. For example, the first preset temperature parameter may be 70° C., 75° C., 80° C., 85° C., 90° C., 100° C., 110° C., etc., and this embodiment of the application does not make specific requirements for this.

[0230] As the firefighting liquid is discharged and replenished, the temperature of the battery device 120 will also change accordingly. The controller can obtain a second temperature parameter in the accommodating chamber 111 and, based on the comparison between the second temperature parameter and a second preset temperature parameter, close the drain assembly 140 and the liquid pipeline to continuously cool the battery device 120 through the firefighting liquid in the accommodating chamber 111, thereby controlling thermal runaway of the battery device 120.

[0231] It should be noted that, in the embodiment of the present application, the control method for introducing the fire-fighting liquid into the box 1211 of the battery pack 121 is consistent with the above content and will not be repeated here.

[0232] In addition, in some embodiments, the third preset temperature parameter is less than the second preset temperature parameter. According to the second temperature parameter and the second preset temperature parameter, closing the drain assembly 140 and the liquid pipeline specifically includes:

[0233] Determine the magnitude of the second temperature parameter and the second preset temperature parameter.

[0234] If the second temperature parameter is less than or equal to the second preset temperature parameter, the drain assembly 140 and the liquid pipeline are closed, and the immersion time and the third temperature parameter of the accommodating chamber 111 and / or the battery device 120 are obtained.

[0235] The drain assembly 140 is controlled to start according to the immersion time and the preset immersion time, as well as the third temperature parameter and the third preset temperature parameter.

[0236] For example, the firefighting liquid continues to flow to cool the battery device 120. When the temperature of the battery device 120 drops to or below the second preset temperature, the drain assembly 140 and the liquid pipeline are simultaneously closed, the battery device 120 is immersed in the firefighting liquid, and the temperature in the accommodating chamber 111 is continuously detected to obtain a third temperature parameter. A timer or the immersion duration of the battery device 120 can also be used to determine the third temperature parameter. The controller uses the immersion duration and the third temperature to make a comprehensive judgment to ensure that the thermal runaway of the battery device 120 has been completely controlled and that secondary re-ignition will not occur. In this way, the drain assembly 140 can be activated to completely drain the liquid from the accommodating chamber 111.

[0237] It should be noted that the second preset temperature parameter in the embodiment of the present application may be less than or equal to 50°C, and examples thereof include 50°C, 45°C, 40°C, 35°C, 30°C, 25°C, 20°C, 15°C, 10°C, etc., and this embodiment of the present application does not impose any specific requirements on this. Furthermore, the acquisition of the third temperature parameter needs to be selected based on the specific configuration of the energy storage system 100 to obtain the actual third temperature parameter of the accommodating cavity 111 and / or the third temperature parameter of the battery device 120.

[0238] In some embodiments, controlling the drainage assembly 140 to start according to the immersion time and the preset immersion time, as well as the third temperature parameter and the third preset temperature parameter, specifically includes:

[0239] The difference between the immersion time and the preset immersion time is determined, and the difference between the third temperature parameter and the third preset temperature parameter is determined.

[0240] If the immersion time is greater than or equal to the preset immersion time, and the third temperature parameter is less than or equal to the third preset temperature parameter, the drain assembly 140 is controlled to start.

[0241] In this way, the embodiment of the present application ensures that the third temperature parameter of the battery device 120 does not increase within the preset immersion time through multi-dimensional judgment of the third temperature parameter and the immersion time. This ensures that after the thermal runaway of the battery device 120 is completely controlled and the fire-fighting liquid is discharged, it is convenient to maintain the interior of the energy storage cabin 110.

[0242] Among them, the preset immersion time is greater than or equal to 12 hours. For example, the preset immersion time can be 12 hours, 13 hours, 14 hours, 15 hours, 16 hours, etc., and the embodiment of the present application does not make specific requirements for this.

[0243] In some embodiments, the method further comprises:

[0244] The liquid parameters in the liquid storage part 131 are obtained.

[0245] Determine the size of liquid parameters and preset liquid parameters.

[0246] If the liquid parameter is less than the preset liquid parameter, the liquid replenishing component 160 is controlled to replenish the firefighting liquid into the liquid storage component 131 .

[0247] Exemplarily, the preset liquid parameters include: the position of the liquid surface, the flow rate of the liquid, etc. Correspondingly, the liquid parameters in the liquid outlet correspond to: the position of the page in the liquid storage part 131, the flow rate of the liquid in the liquid storage part 131, etc.

[0248] In this way, firefighting liquid is replenished into the liquid storage part 131 through the liquid replenishing part 160 to ensure that the firefighting liquid can continue to flow into the accommodating cavity 111 and / or the box 1211 of the battery device 120, and through the continuous flow of the firefighting liquid, the thermal runaway of the battery device 120 is suppressed, further ensuring the safety of the energy storage system 100.

[0249] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0250] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0251] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0252] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0253] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fire-fighting device, characterized in that: include: A liquid pipeline, a liquid storage element (131), and a control element, wherein the liquid storage element (131) is used to communicate with the accommodating chamber (111) of the energy storage system (100) and / or the battery device (120) of the energy storage system (100) through the liquid pipeline; the control element is arranged on the liquid pipeline to open or close the liquid pipeline; The control component opens the liquid pipeline to allow the firefighting liquid in the liquid storage component (131) to flow into the accommodating chamber (111) and / or the battery device (120), thereby reducing the temperature of the accommodating chamber (111) and / or the battery device (120).

2. The fire fighting device according to claim 1, characterized in that: The device further comprises a controller, which is electrically connected to the control element; the controller opens or closes the liquid pipeline by controlling the control element.

3. The fire fighting device according to claim 1, characterized in that: The liquid pipeline comprises a first liquid supply pipe (132), and the first liquid supply pipe (132) is used to connect the liquid storage component (131) and the accommodating chamber (111).

4. The fire fighting device according to claim 3, characterized in that: The control component comprises a first control component (133), the first control component (133) being arranged on the first liquid supply pipe (132), and the first control component (133) being used to open or close the first liquid supply pipe (132).

5. The fire fighting device according to claim 4, characterized in that: There are a plurality of accommodating cavities (111), a plurality of battery devices (120), the battery devices (120) are arranged in the accommodating cavities (111), and the battery devices (120) and the accommodating cavities (111) are arranged in a one-to-one correspondence; There are multiple first liquid supply pipes (132), and the first liquid supply pipes (132) and the accommodating chambers (111) are arranged in a one-to-one correspondence; There are a plurality of first control members (133), and the first control members (133) are arranged one by one on the first liquid supply pipes (132) to open or close the corresponding first liquid supply pipes (132).

6. The fire fighting device according to claim 5, characterized in that: The first liquid supply pipe (132) has a liquid outlet; The position of the liquid outlet of the first liquid supply pipe (132) is higher than the top of the battery device (120).

7. The fire fighting device according to claim 4, characterized in that: It also includes a controller, which is electrically connected to the first control member (133); the controller opens or closes the first liquid supply pipe (132) by controlling the first control member (133).

8. The fire fighting device according to claim 1, characterized in that: The battery device (120) comprises a battery pack (121), wherein the battery pack (121) has a box (1211); the liquid pipeline is used to connect the box (1211) and the liquid storage member (131).

9. The fire fighting device according to claim 8, characterized in that: The liquid pipeline further comprises a second liquid supply pipe (134), and the second liquid supply pipe (134) is used to connect the box body (1211) and the liquid storage member (131).

10. The fire fighting device according to claim 9, characterized in that: The control component comprises a second control component (135), and the second control component (135) is arranged on the second liquid supply pipe (134) to open or close the second liquid supply pipe (134).

11. The fire fighting device according to claim 10, characterized in that: There are multiple battery packs (121); The second liquid supply pipe (134) has a plurality of outlet ends, the outlet ends of the second liquid supply pipe (134) and the box body (1211) are arranged in a one-to-one correspondence, and the outlet ends of the second liquid supply pipe (134) are connected to the box body (1211).

12. The fire fighting device according to claim 11, characterized in that: There are multiple second control members (135), and the multiple second control members (135) are arranged in a one-to-one correspondence at the outlet end of the second liquid supply pipe (134).

13. The fire fighting device according to claim 10, characterized in that: It also includes a controller, the controller is electrically connected to the second control member (135); the controller opens or closes the second liquid supply pipe (134) by controlling the second control member (135).

14. The fire fighting device according to claim 1, characterized in that: It also includes a drain assembly (140); the drain assembly (140) is used to communicate with the accommodating cavity (111), and the drain assembly (140) is configured to drain the firefighting liquid in the accommodating cavity (111); And / or, the drainage assembly (140) is used to be arranged on the battery device (120), and the drainage assembly (140) is configured to drain the firefighting liquid in the battery device (120).

15. The fire fighting device according to claim 14, characterized in that: The drainage assembly (140) further includes a first drainage pipe (141), wherein the first drainage pipe (141) is used to communicate with the accommodating chamber (111) and discharge the firefighting liquid in the accommodating chamber (111).

16. The fire fighting device according to claim 15, characterized in that: The liquid discharge assembly (140) further comprises a first liquid discharge control member (142), wherein the first liquid discharge control member (142) is arranged on the first liquid discharge pipe (141) to open or close the first liquid discharge pipe (141).

17. The fire fighting device according to claim 16, characterized in that: It also includes a controller, which is electrically connected to the first liquid discharge control component (142); the controller controls the first liquid discharge control component (142) to open or close the first liquid discharge pipe (141).

18. The fire fighting device according to claim 14, characterized in that: The drainage assembly (140) further includes a second drainage pipe (143), and the second drainage pipe (143) is used to connect the box (1211) of the battery device (120) and the outside.

19. The fire fighting device according to claim 18, characterized in that: The drainage assembly (140) further comprises a second drainage control member (144), wherein the second drainage control member (144) is arranged on the second drainage pipe (143) to open or close the second drainage pipe (143).

20. The fire fighting device according to claim 19, characterized in that: The invention also includes a controller, wherein the controller is electrically connected to the second liquid discharge control component (144); the controller controls the second liquid discharge control component (144) to open or close the second liquid discharge pipe (143).

21. The fire fighting device according to claim 14, characterized in that: It also includes a liquid recovery component (150), which is connected to the drainage component (140) to recover the firefighting liquid discharged through the drainage component (140).

22. The fire fighting device according to claim 21, characterized in that: The liquid recovery component (150) comprises a collecting component (151), and the collecting component (151) is connected to the liquid discharge component (140).

23. The fire fighting device according to claim 22, characterized in that: The liquid recovery component (150) further comprises a processing component (152), wherein the processing component (152) is connected to the collecting component (151).

24. The fire fighting device according to claim 1, characterized in that: It also includes a liquid replenishing component (160), which is connected to the liquid storage component (131) to replenish the firefighting liquid into the liquid storage component (131).

25. The fire fighting device according to claim 24, characterized in that: It also includes a liquid detection component (170) and a controller, wherein the liquid detection component (170) is arranged on the liquid storage component (131); The controller is electrically connected to the liquid detection component (170) and the liquid replenishing component (160), respectively. The controller responds to a detection signal from the liquid detection component (170) to control the liquid replenishing component (160) to replenish the firefighting liquid into the liquid storage component (131).

26. The fire fighting device according to claim 1, characterized in that It also includes a gas firefighting assembly (180), which is used to be arranged in the accommodating cavity (111) and / or the battery device (120) to introduce firefighting gas into the accommodating cavity (111) and / or the battery device (120).

27. The fire fighting device according to claim 26, characterized in that: The gas firefighting assembly (180) comprises a gas storage component (181), a gas pipeline (182), and a gas control component (183); the gas pipeline (182) is used to respectively connect the gas storage component (181) and the accommodating chamber (111) and / or the battery device (120); The gas control component (183) is provided on the gas pipeline (182) to open or close the gas pipeline (182); The gas control component (183) is used to open the gas pipeline (182), so that the firefighting gas in the gas storage component (181) enters the accommodating cavity (111) and / or the battery device (120) through the gas pipeline (182).

28. The fire fighting device according to claim 27, characterized in that: The invention also includes a controller, wherein the controller is electrically connected to the gas control component (183), and the controller opens or closes the gas pipeline (182) by controlling the gas control component (183).

29. The fire fighting device according to claim 1, characterized in that: It also includes a fan assembly, which is used to be arranged in the accommodating cavity (111) and / or the battery device (120), and the fan assembly is configured to discharge gaseous substances in the accommodating cavity (111) and / or the battery device (120).

30. The fire fighting device according to claim 29, characterized in that: It also includes a controller, which is electrically connected to the fan assembly; the controller is used to control the start and stop of the fan assembly.

31. A method for controlling a fire-fighting device, characterized in that: Applicable to the fire-fighting device according to any one of claims 1 to 30; the method comprising: According to the thermal runaway parameter and the preset thermal runaway parameter, the control component is controlled to open the liquid pipeline, so that the firefighting liquid in the liquid storage component (131) flows into the accommodating chamber (111) and / or the battery device (120), thereby reducing the temperature of the accommodating chamber (111) and / or the battery device (120).

32. The method according to claim 31, characterized in that The preset thermal runaway parameter includes a first preset thermal runaway parameter and a second preset thermal runaway parameter; the first preset thermal runaway parameter is less than the second preset thermal runaway parameter; before the control member opens the liquid pipeline, the control further includes: Determining the magnitudes of the thermal runaway parameter, the first preset thermal runaway parameter, and the second preset thermal runaway parameter; If the thermal runaway parameter is greater than or equal to the first preset thermal runaway parameter and less than the second preset thermal runaway parameter, the fan assembly is controlled to start to discharge the gaseous matter in the accommodating cavity (111) and / or the battery device (120).

33. The method according to claim 32, characterized in that The preset thermal runaway parameter includes a third preset thermal runaway parameter, and the third preset thermal runaway parameter is greater than the second preset thermal runaway parameter; After the control blower assembly is started and before the control member is controlled to open the liquid pipeline, the method further includes: Determining the magnitudes of the thermal runaway parameter, the second preset thermal runaway parameter, and the third preset thermal runaway parameter; If the thermal runaway parameter is greater than or equal to the second preset thermal runaway parameter and less than the third preset thermal runaway parameter, the fan assembly is controlled to stop, and the gas fire fighting assembly (180) is controlled to start, so as to introduce fire fighting gas into the accommodating cavity (111) and / or the battery device (120).

34. The method according to claim 33, wherein The controlling the control element to open the liquid pipeline according to the thermal runaway parameter and the preset thermal runaway parameter specifically includes: Determining the magnitudes of the thermal runaway parameter and the third preset thermal runaway parameter; If the thermal runaway parameter is greater than or equal to the third preset thermal runaway parameter, the control element is controlled to open the liquid pipeline.

35. The method according to claim 31, wherein The second preset temperature parameter is less than the first preset temperature parameter; after the control member is controlled to open the liquid pipeline, the method further includes: Acquiring a first temperature parameter of the accommodating cavity (111) and / or the battery device (120); Determining the magnitude of the first temperature parameter and the first preset temperature parameter; If the temperature parameter is greater than or equal to the first preset temperature parameter, controlling the liquid discharge component (140) to start and obtaining a second temperature parameter; According to the second temperature parameter and the second preset temperature parameter, the drain assembly (140) and the liquid pipeline are closed.

36. The method according to claim 35, characterized in that The third preset temperature parameter is less than the second preset temperature parameter; and closing the drain assembly (140) and the liquid pipeline according to the second temperature parameter and the second preset temperature parameter specifically includes: Determining the magnitude of the second temperature parameter and the second preset temperature parameter; If the second temperature parameter is less than or equal to the second preset temperature parameter, closing the drainage component (140) and the liquid pipeline, and obtaining the immersion time and a third temperature parameter in the accommodating chamber (111) and / or the battery device (120); The drainage component (140) is controlled to start according to the immersion time and the preset immersion time, as well as the third temperature parameter and the third preset temperature parameter.

37. The method according to claim 36, wherein The controlling the start-up of the drainage component (140) according to the immersion time and the preset immersion time, and the third temperature parameter and the third preset temperature parameter specifically includes: Determining the size of the immersion time and the preset immersion time, and determining the size of the third temperature parameter and the third preset temperature parameter; If the immersion time is greater than or equal to the preset immersion time, and the third temperature parameter is less than or equal to the third preset temperature parameter, the drainage component (140) is controlled to start.

38. The method according to claim 31, wherein Also includes: Obtaining liquid parameters in the liquid storage element (131); Determining the magnitude of the liquid parameter and the preset liquid parameter; If the liquid parameter is less than the preset liquid parameter, the liquid replenishing component (160) is controlled to replenish the firefighting liquid into the liquid storage component (131).

39. An energy storage system, characterized in that: include: An energy storage cabin (110), wherein the energy storage cabin (110) has a receiving cavity (111); A battery device (120), the battery device (120) being disposed in the accommodating cavity (111); The fire-fighting device according to any one of claims 1 to 30, wherein the fire-fighting device is arranged in the energy storage compartment (110) and / or the battery device (120) to reduce the temperature of the accommodating cavity (111) and / or the battery device (120).

40. The energy storage system according to claim 39, characterized in that A liquid storage component (131) of the fire-fighting device is provided on the inner side of the top wall of the energy storage compartment (110); And / or, the liquid storage component (131) of the fire-fighting device is provided on the outer side of the top wall of the energy storage compartment (110).

41. The energy storage system according to claim 39, characterized in that The first liquid supply pipe (132) of the fire-fighting device is arranged in the energy storage cabin (110).

42. The energy storage system according to claim 39, characterized in that There are a plurality of accommodating cavities (111), and the plurality of accommodating cavities (111) are arranged at intervals along the first direction; There are multiple battery devices (120), and the battery devices (120) and the accommodating cavities (111) are arranged in a one-to-one correspondence; The first direction is perpendicular to the height direction of the energy storage cabin (110).

43. The energy storage system according to claim 39, characterized in that The first drain pipe (141) in the drain assembly (140) of the fire-fighting device is arranged in the energy storage compartment (110) and communicates with the accommodating chamber (111) to discharge the fire-fighting liquid in the accommodating chamber (111).

44. The energy storage system according to claim 39, characterized in that The battery device (120) comprises a battery pack (121), and the battery pack (121) has a box (1211); the box (1211) is connected to the liquid storage component (131) of the fire-fighting device through a liquid pipeline of the fire-fighting device.

45. The energy storage system according to claim 44, characterized in that There are multiple battery packs (121), and the multiple battery packs (121) are arranged along the height direction of the energy storage cabin (110).

46. ​​The energy storage system according to claim 45, characterized in that The second drain pipe (143) in the drain assembly (140) of the fire-fighting device is in communication with the box body (1211) and the outside of the energy storage cabin (110).

47. The energy storage system according to claim 39, characterized in that The gas pipeline (182) in the gas fire-fighting assembly (180) of the fire-fighting device is respectively connected to the gas storage component (181) in the gas fire-fighting assembly (180) and the energy storage cabin (110) and / or the battery device (120).

48. The energy storage system according to claim 39, characterized in that The fan assembly of the fire-fighting device is arranged in the energy storage cabin (110) and / or the battery device (120).

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