Fire extinguishing system for energy storage container and energy storage container

Abstract

The utility model relates to the technical field of fire fighting of energy storage containers, in particular to a fire fighting system for an energy storage container and the energy storage container. The fire fighting system comprises a liquid conveying pipeline, a first electromagnetic valve, a detection device, a fire fighting host and a BMS, the liquid conveying pipeline is led into the energy storage container, the first electromagnetic valve is arranged on the liquid conveying pipeline, and the detection device is used for sending a fire behavior signal when a fire behavior occurs in the energy storage container. The fire-fighting host is electrically connected with the detection device and the electromagnetic valves and is configured to receive the fire behavior signal and send a first opening instruction to the first electromagnetic valve. And the BMS is electrically connected with the fire-fighting host and the first electromagnetic valve, and is configured to send a second opening instruction to the first electromagnetic valve when the fire-fighting host fails. In this way, the liquid conveying pipeline and the energy storage container are in normalized waterproof connection, the fire-fighting host and the BMS conduct dual control on the first electromagnetic valve to guarantee the submerged fire extinguishing function, and therefore the waterproof grade requirement and the fireproof safety requirement are both considered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage container fire fighting, in particular to a fire fighting system for energy storage container and an energy storage container. BACKGROUND

[0002] When there is a fire, thermal runaway or the like in the energy storage container, a fire extinguishing cooling liquid such as water is poured into the internal space of the energy storage container to immerse the faulty battery or faulty equipment, which can quickly extinguish the fire and reduce the temperature. The energy storage container is generally provided with a water delivery pipeline for connecting an external fire water pipe or other cooling liquid storage and supply equipment. Due to the waterproof level requirement of the energy storage container, the water delivery pipeline cannot be connected to the external fire water pipe or cooling liquid storage and supply equipment under normal working conditions of the energy storage container, so as to prevent liquid leakage from affecting the battery and equipment inside the energy storage container.

[0003] In the related art, when the fire is not controlled, the staff or firefighters approach the energy storage container to manually connect the water delivery pipeline to the external fire water pipe or cooling liquid storage and supply equipment. Although this method ensures the waterproof level requirement of the energy storage container, it is high-risk for the staff. Therefore, it is still necessary to improve the safety of the energy storage container while meeting the waterproof level requirement of the energy storage container. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present utility model provide a fire fighting system for energy storage container and an energy storage container to meet the waterproof level requirement and safety requirement of the energy storage container.

[0005] In a first aspect, the embodiments of the present utility model provide a fire fighting system for energy storage container, comprising:

[0006] A liquid delivery pipeline for delivering liquid to immerse the internal space of the energy storage container;

[0007] A first electromagnetic valve arranged in the liquid delivery pipeline for controlling the closing and opening of the liquid delivery pipeline;

[0008] A detection device for detecting the fire in the energy storage container and sending a fire signal;

[0009] A fire host electrically connected with the detection device and the electromagnetic valve for receiving the fire signal and sending a first opening instruction to the first electromagnetic valve;

[0010] A battery management system electrically connected with the fire host and the first electromagnetic valve and configured to send a second opening instruction to the first electromagnetic valve when the fire host fails.

[0011] In an embodiment, the detection device is electrically connected with the battery management system, and the battery management system is configured to send the second opening instruction to the first electromagnetic valve when the fire host fails and receives the fire signal.

[0012] In an embodiment, the fire extinguishing system comprises a plurality of the fire hosts and a plurality of the first electromagnetic valves, each of the first electromagnetic valves is electrically connected with one of the fire hosts, and the plurality of the first electromagnetic valves are electrically connected with the battery management system.

[0013] In an embodiment, the detection device comprises at least one of a temperature detector, a smoke detector, and a flammable gas detector.

[0014] In an embodiment, the liquid delivery pipeline comprises an outlet port and an inlet port, the outlet port is located inside the energy storage container, the inlet port is located outside the energy storage container, and the first electromagnetic valve is arranged at the inlet port.

[0015] In an embodiment, the fire extinguishing system further comprises:

[0016] a fire extinguishing agent supply device for supplying a fire extinguishing agent to the energy storage container and provided with a fire extinguishing agent outlet;

[0017] a second electromagnetic valve arranged at the fire extinguishing agent outlet and used for closing and opening the fire extinguishing agent outlet;

[0018] The second electromagnetic valve is electrically connected with the fire host, and the fire host is used for receiving the fire signal and sending a third opening instruction to the second electromagnetic valve.

[0019] In an embodiment, the detection device is configured to detect a fire and send the fire signal at a set frequency;

[0020] The fire host sends the third opening instruction when the fire signal is received for the first time;

[0021] The fire host sends the first opening instruction when the fire signal is received for the second time.

[0022] In an embodiment, the fire host sends a failure signal when the fire signal is received for the third time.

[0023] In an embodiment, the fire extinguishing agent comprises at least one of heptafluoropropane, ammonium phosphate dry powder, and perfluoroacetone.

[0024] In a second aspect, embodiments of the present application provide an energy storage container comprising the fire extinguishing system according to any one of the first aspect.

[0025] The embodiment of the utility model has the advantages of:

[0026] In the embodiment of the utility model, the first electromagnetic valve is arranged on the liquid delivery pipeline to realize the normal waterproof connection of the liquid delivery pipeline and the energy storage container, the first electromagnetic valve, the detection device and the fire-fighting host are electrically connected, the fire-fighting host and the first electromagnetic valve are electrically connected with the BMS, when a fire or thermal runaway occurs in the energy storage container, the first electromagnetic valve is opened by the fire-fighting host first, when the fire-fighting host fails, the BMS receives the fault signal of the fire-fighting host to control the first electromagnetic valve to open, thereby the first electromagnetic valve is double-controlled by the fire-fighting host and the BMS to guarantee the immersion fire extinguishing function, and the waterproof grade requirement and the fire safety requirement are considered. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0028] Figure 1 It is the structure diagram of the fire-fighting system for the energy storage container provided by an embodiment of the utility model;

[0029] Figure 2 It is the connection structure block diagram of the fire-fighting system for the energy storage container provided by an embodiment of the utility model;

[0030] Figure 3 It is the connection structure block diagram of the fire-fighting system for the energy storage container provided by another embodiment of the utility model.

[0031] Icon:

[0032] 1-energy storage container, 2-liquid delivery pipeline, 3-first electromagnetic valve, 4-detection device, 5-fire-fighting host, 6-BMS, 7-fire hydrant, 8-fire extinguishing agent supply device, 9-second electromagnetic valve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the drawing direction in the drawings. The "inner" and "outer" refer to the outline of the device.

[0034] The energy storage container is an integrated energy storage system integrating battery cabinets, battery management systems (Battery Management System, hereinafter referred to as BMS) and other devices. Its main purpose is to provide uninterrupted power supply for various devices, including power plants, wind power plants, solar power plants, and other applications such as islands, communities, schools, research institutions, factories, and large load centers. In terms of structure, the energy storage container includes a frame structure box for accommodating battery cabinets, BMS and other devices to form an overall structure.

[0035] In addition, the energy storage container is also provided with fire-fighting equipment, such as a water supply pipeline for connecting external fire water pipes or other cooling liquid storage and supply equipment. Due to the waterproof level requirements of the energy storage container, the water supply pipeline cannot be connected to the external fire water pipe or the cooling liquid storage and supply equipment under normal working conditions of the energy storage container, so as to prevent liquid leakage from affecting the batteries and equipment inside the energy storage container. Therefore, the water supply pipeline is usually connected to the external fire water pipe or the cooling liquid storage and supply equipment by the relevant rescue personnel such as the staff or the fire personnel when the fire is out of control. For the on-site operating staff or fire personnel, it is necessary to approach the energy storage container at the risk of a large safety risk when the fire is out of control.

[0036] Therefore, the present application provides an energy storage container and a fire-fighting system for the energy storage container. The energy storage container provided by the present application has the fire-fighting system for the energy storage container, which improves the fire safety performance while meeting the waterproof level requirements of the energy storage container, greatly reduces the risk of rescue personnel, and achieves the requirements of waterproof level and safety of the energy storage container.

[0037] As Figure 1 and Figure 2As shown, the fire-fighting system comprises a liquid delivery pipeline 2, a first electromagnetic valve 3, a detection device 4, a fire-fighting host 5, and a battery management system (BMS 6).

[0038] The liquid delivery pipeline 2 is used to deliver liquid to the energy storage container 1 to immerse the internal space of the energy storage container 1, so that the battery pack and other equipment in the energy storage container 1 are immersed.

[0039] When there is a fire, thermal runaway, or the like in the energy storage container 1, the internal space of the energy storage container 1 is flooded with liquid, which includes water, to immerse the faulty battery or faulty equipment with a large amount of water, rapidly lower the temperature of the ignition point, isolate air, thereby suppressing the fire, hindering heat transfer, preventing the spread of fire, achieving the purpose of rapid cooling and fire extinguishing, and preventing rekindling.

[0040] The first electromagnetic valve 3 is arranged in the liquid delivery pipeline 2 and is used to control the opening and closing of the liquid delivery pipeline 2. In the normal working state of the energy storage container 1, the first electromagnetic valve 3 controls the liquid delivery pipeline 2 to be closed to avoid water entering the energy storage container 1, thereby meeting the waterproof level requirements of the energy storage container 1.

[0041] The detection device 4 is used to detect the fire in the energy storage container 1 and send a fire signal. The detection device 4 provided in the embodiments of the present application has various types, for example, the detection device 4 comprises at least one of a temperature detector, a smoke detector, and a flammable gas detector.

[0042] The detection device 4 detects the fire and sends a fire signal in various ways. For example, in some embodiments, the detection device 4 comprises a temperature detector configured to send a fire signal when detecting that the temperature in the energy storage container 1 exceeds a set threshold value; or the detection device 4 comprises a temperature detector configured to send a fire signal when detecting that the temperature in the energy storage container 1 rapidly rises.

[0043] In some embodiments, the detection device 4 comprises a smoke detector configured to send a fire signal when detecting that there is smoke ion in the energy storage container 1.

[0044] In some embodiments, the detection device 4 comprises a combustible gas detector, which sends a fire signal when detecting the presence of combustible gas in the energy storage container 1, including carbon monoxide, hydrogen, methane, etc. When the battery is in thermal runaway or on fire, the electrolyte, active material and other chemical materials inside the battery may decompose or react to produce combustible gases such as carbon monoxide, hydrogen and methane. Therefore, by sending a fire signal when detecting combustible gas, the safety risk of battery thermal runaway or fire can be reduced. In addition, when the battery is not in thermal runaway or on fire, but there is combustible gas in the energy storage container 1, the energy storage container 1 is also at a higher safety risk. Therefore, by sending a fire signal when detecting combustible gas, the safety risk of the energy storage container 1 can be reduced.

[0045] The fire host 5 is electrically connected with the detection device 4 and the electromagnetic valve respectively, and the fire host 5 is used for receiving the fire signal and sending a first opening instruction to the first electromagnetic valve 3. In other words, when a fire occurs, the fire host 5 sends a first opening instruction after receiving the fire signal sent by the detection device 4, and the first electromagnetic valve 3 opens in response to the first opening instruction, and the liquid delivery pipeline 2 inputs liquid into the energy storage container 1 to flood the energy storage container 1.

[0046] The fire host 5 is a key device for receiving a fire signal and starting a fire extinguishing function. However, the fire host 5 may have a risk of failure, and once the fire host 5 fails, the first electromagnetic valve 3 may not be able to open normally.

[0047] In the embodiments of the present application, the fire host 5 and the first electromagnetic valve 3 are also connected with the BMS 6, and the BMS 6 is used for sending a second opening instruction to the first electromagnetic valve 3 when the fire host 5 fails, thereby avoiding the problem that the failure of the fire host 5 causes the first electromagnetic valve 3 to fail to open.

[0048] The technical scheme provided by the embodiments of the present application sets the first electromagnetic valve 3 on the liquid delivery pipeline 2, electrically connects the first electromagnetic valve 3, the detection device 4 and the fire host 5, and electrically connects the fire host 5 and the first electromagnetic valve 3 with the BMS 6. When a fire or thermal runaway occurs in the energy storage container 1, the first electromagnetic valve 3 is first opened by the fire host 5, and when the fire host 5 fails, the BMS 6 receives a failure signal of the fire host 5 to control the first electromagnetic valve 3 to open. Under the double control of the fire host 5 and the BMS 6, the immersion fire extinguishing function is guaranteed, and the waterproof requirement of the energy storage container 1 is ensured, so as to balance the waterproof grade requirement and the fire safety requirement.

[0049] In some embodiments, the detection device 4 is electrically connected with the BMS 6. The BMS 6 is configured to send a second opening instruction to the first electromagnetic valve 3 when receiving the fire signal, thereby further avoiding the failure of the fire host 5.

[0050] In some embodiments, the fire-fighting system comprises a plurality of first electromagnetic valves 3, each of which is electrically connected to a fire-fighting host 5, and each of which is electrically connected to the BMS 6, so that the BMS 6 can control the plurality of first electromagnetic valves 3 at the station level. Thus, the BMS 6 can simultaneously control the plurality of first electromagnetic valves 3 to open, thereby achieving the effect of rapid immersion fire extinguishing.

[0051] In the embodiments of the present application, the detection device 4 is electrically connected to the BMS 6 and the fire-fighting host 5 through CAN or RS-485 lines, the fire-fighting host 5 is electrically connected to the BMS 6 and the first electromagnetic valve 3 through dry contact signals, and the BMS 6 is electrically connected to the first electromagnetic valve 3 through dry contact signals.

[0052] In some embodiments, the liquid delivery pipeline 2 comprises an outlet port and an inlet port, the outlet port is located inside the energy storage container 1, the inlet port is located outside the energy storage container 1, and the first electromagnetic valve 3 is arranged at the inlet port. By such an arrangement, the inlet port of the liquid delivery pipeline 2 is away from the energy storage container 1, so that the water source is away from the energy storage container 1, and the liquid delivery pipeline 2 can provide a holding space for the dripping liquid, thereby avoiding the liquid directly entering the energy storage container 1 to cause equipment failure, and further improving the waterproof performance of the energy storage container 1.

[0053] In some embodiments, the fire-fighting system further comprises a fire-fighting water pipe, and the inlet port is sealingly connected to the fire-fighting water pipe. As an example, the liquid delivery pipeline 2 is connected to the fire-fighting water pipe through a flange, and a sealing gasket is arranged at the connection, thereby reducing the risk of water leakage.

[0054] In some embodiments, as shown in Figure 1 and Figure 3 The fire-fighting system further comprises a fire extinguishing agent supply device 8 and a second electromagnetic valve 9. The fire extinguishing agent supply device 8 is used to supply fire extinguishing agent to the energy storage container 1 and is provided with a fire extinguishing agent outlet; the second electromagnetic valve 9 is arranged at the fire extinguishing agent outlet and is used to close and open the fire extinguishing agent outlet. The second electromagnetic valve 9 is electrically connected to the fire-fighting host 5, and the fire-fighting host 5 is used to receive the fire signal and send a third opening instruction to the second electromagnetic valve 9. After the first electromagnetic valve 3 is opened for flooding, it takes a certain time to immerse the energy storage container 1. By arranging the fire extinguishing agent supply device 8 with the second electromagnetic valve 9, the fire can be extinguished or the development of the fire can be controlled before the immersion is completed, thereby further improving the safety of the energy storage container 1.

[0055] In some embodiments, the detection device 4 is used to send a fire signal at a set frequency when detecting a fire in the energy storage container 1;

[0056] The fire-fighting host 5 sends a third opening instruction when receiving the fire signal for the first time;

[0057] The fire host 5 sends a first opening instruction when receiving the fire signal for the second time.

[0058] The fire host 5 first controls the second electromagnetic valve 9 to open, extinguishes the fire through the fire extinguishing agent, realizes that the fire detection device 4 stops sending the fire signal after extinguishing the fire, and the fire host 5 will not continue to send the first opening instruction, thereby avoiding opening the first electromagnetic valve 3, so that after the fire is extinguished under the action of the fire extinguishing agent, immersion fire extinguishing is avoided, and the un-fired equipment in the energy storage container 1 is maximized.

[0059] In some embodiments, the fire host 5 sends a fault signal when receiving the fire signal for the third time, thereby controlling the first electromagnetic valve 3 to open through the BMS 6.

[0060] In some embodiments, the fire extinguishing agent includes at least one of heptafluoropropane, ammonium phosphate salt dry powder, and perfluoroacetone.

[0061] In another aspect, the application also provides an energy storage container 1, which comprises the fire extinguishing system provided by any of the foregoing embodiments.

[0062] The above has carried out the detailed introduction to the embodiment of the application, the principle and implementation mode of the application have been described in this paper by applying specific examples, the above embodiment is only used for helping to understand the method and core idea of the application; at the same time, for the person skilled in the art, according to the idea of the application, the specific implementation mode and application range will have changes, and the above, the content of the specification should not be understood as the limitation of the application.

Claims

1. A fire extinguishing system for an energy storage container, characterized in that The fire extinguishing system comprises: a liquid delivery pipeline for delivering liquid to immerse the interior space of the energy storage container; a first electromagnetic valve arranged in the liquid delivery pipeline for controlling the closing and opening of the liquid delivery pipeline; a detection device for detecting fire in the energy storage container and sending a fire signal; a fire host electrically connected with the detection device and the electromagnetic valve, for receiving the fire signal and sending a first opening instruction to the first electromagnetic valve; a battery management system electrically connected with the fire host and the first electromagnetic valve, configured to send a second opening instruction to the first electromagnetic valve when the fire host fails.

2. The fire protection system for an energy storage container according to claim 1, characterized in that The detection device is electrically connected with the battery management system, and the battery management system is configured to send the second opening instruction to the first electromagnetic valve when the fire host fails and the fire signal is received.

3. The fire protection system for an energy storage container of claim 1, wherein, The fire extinguishing system comprises a plurality of fire hosts and a plurality of first electromagnetic valves, each of the first electromagnetic valves is electrically connected with one of the fire hosts, and the plurality of first electromagnetic valves are electrically connected with the battery management system.

4. The fire protection system for an energy storage container of claim 1, wherein, The detection device comprises at least one of a temperature detector, a smoke detector, and a flammable gas detector.

5. The fire protection system for an energy storage container of claim 1, wherein, The liquid delivery pipeline comprises a liquid outlet port and a liquid inlet port, the liquid outlet port is located in the interior of the energy storage container, the liquid inlet port is located outside the energy storage container, and the first electromagnetic valve is arranged in the liquid inlet port.

6. The fire protection system for an energy storage container according to any one of claims 1-5, wherein The fire extinguishing system further comprises: a fire extinguishing agent supply device for supplying fire extinguishing agent to the energy storage container and provided with a fire extinguishing agent outlet; a second electromagnetic valve arranged in the fire extinguishing agent outlet for closing and opening the fire extinguishing agent outlet; The second electromagnetic valve is electrically connected with the fire host, and the fire host is used for receiving the fire signal and sending a third opening instruction to the second electromagnetic valve.

7. The fire protection system for an energy storage container according to claim 6, characterized in that The detection device is configured to detect fire and send the fire signal at a set frequency; The fire host sends the third opening instruction when the fire signal is received for the first time; The fire host sends the first opening instruction when the fire signal is received for the second time.

8. The fire protection system for an energy storage container according to claim 7, wherein The fire host sends a failure signal when the fire signal is received for the third time.

9. The fire protection system for an energy storage container of claim 6, wherein, The fire extinguishing agent comprises at least one of heptafluoropropane, ammonium phosphate dry powder, and perfluoroacetone.

10. An energy storage container, characterized by The fire extinguishing system comprises any one of claims 1-9.

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