Integrated direct-current energy storage fire extinguishing system

Abstract

The utility model provides an integrated direct current energy storage fire fighting system, which belongs to the technical field of equipment fire fighting and comprises an energy storage cabinet, a plurality of partition plates, a plurality of air inlet pipes, a plurality of four-way valves, a plurality of isolation bags and a fire extinguishing agent tank. The multiple air inlet pipes are installed on the energy storage cabinet and communicate with the corresponding spaces. A first inlet of the four-way valve is communicated with the corresponding air inlet pipe; and a first outlet of the four-way valve is communicated with each space for cooling the energy storage unit. The multiple isolation bags are arranged on the bottom faces of the corresponding partition plates and communicate with a second outlet of the four-way valve. And the fire extinguishing agent tank communicates with a second inlet of the four-way valve and is used for introducing a fire extinguishing agent into the isolation bag through the four-way valve. The fire extinguishing agent and gas exhausted by the gas inlet pipe enter the isolation bag through the four-way valve and are used for extinguishing a fire point after hot melting of the isolation bag. According to the integrated direct-current energy storage fire extinguishing system provided by the utility model, the accurate fire extinguishing of a fire point is improved, and the expansion of the fault influence is effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment fire protection, and more specifically, relates to an integrated direct current energy storage fire protection system. Background Art

[0002] Energy storage can effectively solve the contradiction between the intermittent supply of new energy and the continuity of user electricity demand, realize peak and frequency regulation of the power system, smooth user demand, improve energy utilization, and help achieve the "dual carbon" goal. Therefore, the installed capacity of energy storage systems continues to expand. However, as the installed capacity of energy storage systems continues to expand, the safe and reliable operation of energy storage systems is becoming more and more important. Among the safety accidents that have occurred in energy storage power stations, fires in energy storage systems account for a large proportion. Due to overcharging and over-discharging of batteries, high-rate charging and discharging, damage to batteries caused by the battery installation environment or process, etc., internal short-circuit failures are prone to occur during operation, thereby causing thermal runaway of the battery. After thermal runaway, the battery will produce flammable and toxic gases. When the heat is high enough to ignite these gases, it is easy to cause fires, causing property losses and even casualties.

[0003] After a fire occurs, the existing fire protection system can only extinguish all the components in the energy storage cabinet, that is, it is impossible to deal with the fire point in a targeted manner. This causes the remaining components to be affected by the fire extinguishing agent, etc., and may even be scrapped in severe cases. Utility Model Content

[0004] The utility model aims to provide an integrated DC energy storage fire fighting system, aiming to solve the problem that the fire point cannot be dealt with in a targeted manner.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: to provide an integrated DC energy storage fire protection system, including:

[0006] Energy storage cabinet;

[0007] A plurality of partitions are fixed in sequence in the energy storage cabinet, and the plurality of partitions divide the inner cavity of the energy storage cabinet into a plurality of spaces, wherein the spaces are used to install and fix a plurality of energy storage units;

[0008] A plurality of air inlet pipes, installed on the energy storage cabinet and connected to the corresponding spaces;

[0009] A plurality of four-way valves, wherein the first inlet of the four-way valve is connected to the corresponding air intake pipe; and the first outlet of the four-way valve is connected to each of the spaces for cooling the energy storage unit;

[0010] A plurality of isolation bags are provided on the bottom surfaces of the corresponding partitions, and the isolation bags are communicated with the second outlet of the four-way valve;

[0011] a fire extinguishing agent tank, connected to the second inlet of the four-way valve, and used to introduce the fire extinguishing agent into the isolation bag through the four-way valve;

[0012] The fire extinguishing agent and the gas discharged from the air inlet pipe both enter the isolation bag through the four-way valve to extinguish the fire point after the isolation bag is hot-melted.

[0013] In a possible implementation, when no gas is introduced into the isolation bag, the isolation bag is attached to the bottom surface of the partition.

[0014] In a possible implementation, when no gas is introduced into the isolation bag, the top surface of the isolation bag is bonded to the bottom surface of the partition.

[0015] In a possible implementation, the insulating bag is made of insulating material.

[0016] In a possible implementation, the four-way valve is fixed on the outer side of the energy storage cabinet, and a plurality of the four-way valves are arranged at intervals along the height direction of the energy storage cabinet.

[0017] In a possible implementation, the four-way valve is a solenoid valve.

[0018] In a possible implementation, the energy storage cabinet is provided with a plurality of exhaust pipes, and the exhaust pipes are connected to the corresponding spaces.

[0019] In a possible implementation, a plurality of the air inlet pipes penetrate the side wall of the energy storage cabinet.

[0020] In a possible implementation, the fire extinguishing agent tank stores inert gas at a certain pressure.

[0021] In a possible implementation, the fire extinguishing agent tank is in communication with the second inlets of the plurality of four-way valves.

[0022] The beneficial effect of the integrated DC energy storage fire fighting system provided by the utility model is that compared with the prior art, in the integrated DC energy storage fire fighting system of the utility model, a plurality of partitions are fixed in sequence in the energy storage cabinet, and the partitions divide the inner cavity of the energy storage cabinet into a plurality of spaces, and a plurality of energy storage units are installed and fixed in the corresponding spaces. A plurality of air intake pipes are installed on the energy storage cabinet and are connected to the corresponding spaces. The first inlet of the four-way valve is connected to the corresponding air intake pipe, and the first outlet of the four-way valve is connected to each space. The second outlet of the four-way valve is connected to the isolation bag provided on the bottom surface of the partition, and the second inlet of the four-way valve is connected to the fire extinguishing agent tank.

[0023] In actual application, the gas discharged from the air intake pipe enters through the first inlet and is discharged from the first outlet, thereby completing the cooling of the energy storage unit. When a fire occurs, the fire extinguishing agent in the fire extinguishing agent tank enters through the second inlet and enters the isolation bag through the second outlet. The fire extinguishing agent enters the isolation bag and is used to extinguish the fire point after the isolation bag is hot-melted. The present application integrates the cooling system and the fire fighting system, and has a relatively simple structure. After a fire occurs, the fire extinguishing agent can be accurately positioned at the location where the problem occurs, which improves the precise fire fighting of the fire point and effectively prevents the expansion of the impact of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A connection diagram of an integrated DC energy storage fire protection system provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the connection between the insulating bag and the partition provided in an embodiment of the utility model.

[0027] In the figure: 1. Fire extinguishing agent tank; 2. Energy storage cabinet; 3. Isolation bag; 4. Exhaust pipe; 5. Four-way valve; 6. Inlet pipe; 7. Partition. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] See also Figure 1 and Figure 2, the integrated DC energy storage fire fighting system provided by the utility model is now described. The integrated DC energy storage fire fighting system includes: an energy storage cabinet 2, multiple partitions 7, multiple air inlet pipes 6, multiple four-way valves 5, multiple isolation bags 3 and a fire extinguishing agent tank 1. Multiple partitions 7 are fixed in the energy storage cabinet 2 in sequence, and multiple partitions 7 divide the inner cavity of the energy storage cabinet 2 into multiple spaces, and the spaces are used to install and fix multiple energy storage units. Multiple air inlet pipes 6 are installed on the energy storage cabinet 2 and communicate with the corresponding spaces. The first inlet of the four-way valve 5 is connected to the corresponding air inlet pipe 6; the first outlet of the four-way valve 5 is connected to each space for cooling the energy storage unit. Multiple isolation bags 3 are arranged on the bottom surface of the corresponding partition 7, and the isolation bags 3 are connected to the second outlet of the four-way valve 5. The fire extinguishing agent tank 1 is connected to the second inlet of the four-way valve 5, and the fire extinguishing agent tank 1 is used to pass the fire extinguishing agent into the isolation bag 3 through the four-way valve 5. The fire extinguishing agent and the gas discharged from the air inlet pipe 6 enter the isolation bag 3 through the four-way valve 5 to extinguish the fire point after the isolation bag 3 is hot-melted.

[0030] The beneficial effect of the integrated DC energy storage fire fighting system provided by the utility model is that compared with the prior art, in the integrated DC energy storage fire fighting system of the utility model, a plurality of partitions 7 are fixed in sequence in the energy storage cabinet 2, and the partitions 7 divide the inner cavity of the energy storage cabinet 2 into a plurality of spaces, and a plurality of energy storage units are installed and fixed in the corresponding spaces. A plurality of air intake pipes 6 are installed on the energy storage cabinet 2 and are connected to the corresponding spaces. The first inlet of the four-way valve 5 is connected to the corresponding air intake pipe 6, and the first outlet of the four-way valve 5 is connected to each space. The second outlet of the four-way valve 5 is connected to the isolation bag 3 provided on the bottom surface of the partition 7, and the second inlet of the four-way valve 5 is connected to the fire extinguishing agent tank 1.

[0031] In actual application, the gas discharged from the air intake pipe 6 enters through the first inlet and is discharged from the first outlet, thereby completing the cooling of the energy storage unit. When a fire occurs, the fire extinguishing agent in the fire extinguishing agent tank 1 enters through the second inlet and enters the isolation bag 3 through the second outlet. The fire extinguishing agent enters the isolation bag 3 to extinguish the fire point after the isolation bag 3 is hot-melted. The present application integrates the cooling system and the fire fighting system, and the structure is relatively simple. After a fire occurs, the fire extinguishing agent can be accurately positioned at the location where the problem occurs, which improves the precise fire fighting of the fire point and effectively prevents the expansion of the impact of the fault.

[0032] The fire alarm system is generally composed of a trigger device, a fire alarm device, a linkage output device, and other auxiliary function devices. It can convert physical quantities such as smoke generated by combustion into electrical signals through fire detectors at the early stage of a fire, and transmit them to the fire alarm controller, so that people can detect the fire in time. Due to the large installed capacity and large number of battery cells in energy storage power stations, once thermal runaway of the battery occurs, it is very easy to cause a fire, and it is easy to cause a domino effect, and it is difficult to suppress its re-ignition. The fire safety of the battery system has become one of the biggest difficulties in the industry, and the losses caused by the fire are also quite heavy. Therefore, the energy storage fire protection system is the guarantee of the safety of the energy storage power station. The fire protection plan of the traditional energy storage system is to use industrial-grade smoke detectors and temperature detectors to detect the operating environment of the energy storage system to determine whether a fire has occurred.

[0033] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 and Figure 2 When no gas is introduced into the isolation bag 3, the isolation bag 3 is attached to the bottom surface of the partition 7. When the entire energy storage device is in a normal state, the air intake pipe 6 discharges the air used for cooling into the corresponding space through the four-way valve 5, and the isolation bag 3 is adsorbed on the bottom surface of the partition 7. More importantly, at this time, there is no gas in the isolation bag 3 and it is flat. Because of this, the volume of the isolation bag 3 is small and does not occupy too much space.

[0034] The isolation bag 3 needs to be able to effectively fill the entire space after being inflated, so the isolation bag 3 has a larger surface area when there is no gas inside, and can be directly set on the bottom surface of the partition 7 for easy storage.

[0035] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 and Figure 2 When no gas is introduced into the isolation bag 3, the top surface of the isolation bag 3 is bonded to the bottom surface of the partition 7. To explain in more detail, first, in order to preliminarily position the isolation bag 3 to meet the requirements of transportation and use, a certain amount of glue can be injected into the isolation bag 3. The glue has a low viscosity. After the gas in the isolation bag 3 is extracted, the two side walls of the isolation bag 3 fit together and will not separate. At this time, a certain amount of fixing glue is applied to the outer side surface of one side of the isolation bag 3, and it is fixed to the bottom surface of the partition 7 by the fixing glue. The ultimate goal is to position the entire isolation bag 3 on the partition 7 with the smallest volume, and when the gas is filled, the volume of the isolation bag 3 can be rapidly increased.

[0036] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1The insulating capsule 3 is made of insulating material. When the insulating capsule 3 is filled with gas, its volume will expand. If the insulating capsule 3 is made of conductive material, the insulating capsule 3 will contact a lot of energy storage units, which may eventually lead to a short circuit of the energy storage units, thus causing a more serious accident. For this reason, the insulating capsule 3 is made of insulating material, and the relative melting point can be set to about 100°C, so that it can be quickly melted after contacting the accident point.

[0037] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 The four-way valve 5 is fixed on the outer side of the energy storage cabinet 2, and multiple four-way valves 5 are arranged at intervals along the height direction of the energy storage cabinet 2. By fixing the four-way valve 5 on the outer side of the energy storage cabinet 2, installation and maintenance are convenient, and more importantly, the problem of inconvenient connection and occupying the internal space of the energy storage cabinet 2 when the four-way valve 5 and related pipelines are arranged on the inner side of the energy storage cabinet 2 is avoided.

[0038] Each four-way valve 5 is independent of each other, and each space has a certain degree of tightness, which can ensure that when an energy storage unit in a space has an accident, it will not affect the units in other spaces. At this time, the fire can be extinguished by adjusting the four-way valve 5 in the corresponding space position.

[0039] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 , the four-way valve 5 is a solenoid valve. In order to facilitate adjustment and control, a temperature sensor and a smoke sensor are installed in each space. When an abnormal situation occurs in a space, the corresponding four-way valve 5 can be adjusted by remote control, and the fire extinguishing agent tank 1 can be opened to complete the fire fighting treatment of the space.

[0040] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 The energy storage cabinet 2 is provided with a plurality of exhaust pipes 4, which are connected to the corresponding space. When no abnormal situation occurs, the air inlet pipe 6 introduces gas into the space, and the gas can be discharged from the exhaust pipe 4 after cooling the energy storage unit. When an abnormal situation occurs, the air inlet pipe 6 introduces gas into the isolation bag 3, and when the isolation bag 3 is melted at the accident point, the gas will eventually be discharged from the isolation bag 3. At this time, the gas in the space, especially the harmful exhaust gas, can be discharged through the exhaust pipe 4, and the wind speed of the exhaust pipe 4 is fast, so that negative pressure is generated in the space to avoid affecting the surrounding environment.

[0041] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1, multiple air inlet pipes 6 penetrate the side wall of the energy storage cabinet 2. In order to effectively cool the multiple energy storage units, a cooling system can be set on one side of the multiple energy storage cabinets 2. The cooling pipes on the cooling system are connected to the multiple air inlet pipes 6 to achieve cooling of the air inlet pipes 6, and the fan can pass the gas into the air inlet pipes 6 to complete the cooling of the gas.

[0042] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 , a certain pressure of inert gas is stored in the fire extinguishing agent tank 1. A certain amount of gas needs to exist in the fire extinguishing tank, because only in this way can the fire extinguishing agent in the tank be discharged into the four-way valve 5 after the fire extinguishing tank is opened, that is, the discharge of the fire extinguishing agent can be achieved without external intervention.

[0043] In some embodiments of the integrated DC energy storage fire protection system provided in this application, please refer to Figure 1 The fire extinguishing agent tank 1 is connected to the second inlet of the plurality of four-way valves 5. The number of the fire extinguishing agent tank 1 can be one, and one fire extinguishing agent tank 1 is connected to the plurality of four-way valves 5 at the same time, thereby reducing the purchase cost and the volume occupied by the entire system.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Integrated DC energy storage fire protection system, characterized by: include: Energy storage cabinet; A plurality of partitions are fixed in sequence in the energy storage cabinet, and the plurality of partitions divide the inner cavity of the energy storage cabinet into a plurality of spaces, wherein the spaces are used to install and fix a plurality of energy storage units; A plurality of air inlet pipes, installed on the energy storage cabinet and connected to the corresponding spaces; A plurality of four-way valves, wherein the first inlet of the four-way valve is connected to the corresponding air intake pipe; and the first outlet of the four-way valve is connected to each of the spaces for cooling the energy storage unit; A plurality of isolation bags are provided on the bottom surfaces of the corresponding partitions, and the isolation bags are communicated with the second outlet of the four-way valve; a fire extinguishing agent tank, connected to the second inlet of the four-way valve, and used to introduce the fire extinguishing agent into the isolation bag through the four-way valve; The fire extinguishing agent and the gas discharged from the air inlet pipe both enter the isolation bag through the four-way valve to extinguish the fire point after the isolation bag is hot-melted.

2. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: When no gas is introduced into the isolation bag, the isolation bag is attached to the bottom surface of the partition.

3. The integrated DC energy storage fire fighting system according to claim 2, characterized in that: When no gas is introduced into the isolation bag, the top surface of the isolation bag is bonded to the bottom surface of the partition.

4. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: The insulating bag is made of insulating material.

5. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: The four-way valve is fixed on the outer side of the energy storage cabinet, and a plurality of the four-way valves are arranged at intervals along the height direction of the energy storage cabinet.

6. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: The four-way valve is a solenoid valve.

7. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: The energy storage cabinet is provided with a plurality of exhaust pipes, and the exhaust pipes are communicated with the corresponding spaces.

8. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: A plurality of air inlet pipes penetrate the side wall of the energy storage cabinet.

9. The integrated DC energy storage fire fighting system according to claim 1, characterized in that: The fire extinguishing agent tank stores inert gas at a certain pressure.

10. The integrated DC energy storage fire fighting system according to claim 9, characterized in that: The fire extinguishing agent tank is communicated with the second inlets of the plurality of four-way valves.

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