KR102185759B1 - Fire suppression system for ess - Google Patents

Abstract

The ESS fire extinguishing system is an ESS fire extinguishing system of ESS that stores the generated electricity and supplies it as needed. The ESS fire extinguishing system is installed in the battery rack and battery rack that houses the battery pack, and the fire detector sends out a fire signal. In this case, a fire extinguishing device that sprays fire extinguishing materials and a fire extinguishing device installed under the battery rack to accommodate the electrolytic material leaking from the battery pack, and when a fire signal is sent, water is supplied to neutralize the electrolytic material I include a dragon tank.

Description

ESS fire extinguishing system {FIRE SUPPRESSION SYSTEM FOR ESS}

The present invention relates to an ESS fire extinguishing system, and more specifically, to an ESS fire extinguishing system that extinguishes a fire by neutralizing it with water after receiving an electrolytic material of a battery pack falling due to a fire due to a fire.

In general, ESS (Energy Storage System) refers to a storage device that stores excess power produced by a power plant and transmits it when there is a temporary lack of power. It is increasingly used to prepare for power outages or to reduce peak power.

In recent years, as interest in new and renewable energy has rapidly increased due to unbalanced power supply and demand, the development of technology to store electricity produced by utilizing renewable energy through ESS and to utilize it at the required time has been continuously made. have.

In particular, the ESS market continues to grow as the installation of ESS in newly constructed public buildings has become mandatory, and as ESS installations increase in terms of energy saving in private buildings.

When installing an ESS in a building, the battery rack of the ESS should accommodate a battery that stores energy, a BMS that manages the battery, and a PCS that converts power, and accommodate and operate such a battery rack in a certain space such as a basement. Are doing.

At this time, in the summer when the external temperature is high, the temperature of the ESS system is excessively increased due to a lot of heat generated from the battery of the ESS system, and accordingly, there is a high risk of fire and an error in the ESS system is generated.

However, the conventional ESS-related invention is only interested in the structure of the battery rack itself (refer to Korean Patent Laid-Open No. 10-2016-0094216), and does not propose a solution for extinguishing frequently occurring ESS systems. In the event of an accident, the risk of enormous property damage and large fire is very high.

In order to solve this problem, there is a need for an ESS fire extinguishing system that can effectively extinguish a fire in the case of a fire in the ESS system.

The problem to be solved by the present invention is to provide an ESS fire extinguishing system that extinguishes a fire by receiving an electrolytic material of a battery pack falling due to a fire in a water tank and neutralizing it with water.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

An ESS fire extinguishing system according to an embodiment of the present invention for solving the above problem is an ESS fire extinguishing system of an ESS that stores generated electricity and then supplies it when necessary, and the ESS fire extinguishing system is a battery rack that houses a battery pack. , A fire extinguishing device installed in the battery rack to inject extinguishing material when the fire detector transmits a fire signal, and a fire extinguishing device installed in the lower part of the battery rack to accommodate the electrolytic material leaked from the battery pack, and when a fire signal is transmitted It includes a water tank for neutralization that is supplied with water to neutralize the electrolyte.

According to the present invention, it is possible to provide an ESS fire extinguishing system that extinguishes a fire by neutralizing the electrolyte with water after receiving the electrolytic material of a battery pack falling due to a fire in a water tank.

1 is a simplified perspective view of an ESS fire extinguishing system according to an embodiment of the present invention.
2 and 3 are views showing the operation of the fire curtain of the ESS fire extinguishing system according to an embodiment of the present invention.
4 is a conceptual diagram showing a fire extinguishing process of the ESS fire extinguishing system according to an embodiment of the present invention.
5 is a view showing a neutralization process of an electrolytic material in the ESS fire extinguishing system according to an embodiment of the present invention.
6 is a view showing a process of descending the fire curtain in the ESS fire extinguishing system according to an embodiment of the present invention.
7 is a view showing an electrolytic material neutralization system of the ESS fire extinguishing system according to another embodiment of the present invention.
8 is a simplified perspective view of an ESS fire extinguishing system according to another embodiment of the present invention.

The present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments are intended to complete the disclosure of the present invention, and those skilled in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, “comprises” and/or “comprising” do not exclude the presence or addition of one or more other elements, steps, and actions to the mentioned elements, steps, and actions.

1 to 6, an ESS fire extinguishing system according to an embodiment of the present invention will be described. 1 is a simplified perspective view of an ESS fire extinguishing system according to an embodiment of the present invention. 2 and 3 are views showing the operation of the fire curtain of the ESS fire extinguishing system according to an embodiment of the present invention.

4 is a conceptual diagram showing a fire extinguishing process of the ESS fire extinguishing system according to an embodiment of the present invention. 5 is a view showing a neutralization process of an electrolytic material in the ESS fire extinguishing system according to an embodiment of the present invention. 6 is a view showing a process of descending the fire curtain in the ESS fire extinguishing system according to an embodiment of the present invention.

1 to 6, an ESS fire extinguishing system according to an embodiment of the present invention is an ESS fire extinguishing system of an ESS (Energy Storage System) that stores generated electricity and then supplies it when necessary, and a battery rack (30), a fire detector (70), a fire extinguishing device (60), a neutralization tank (40) and a fire curtain (50).

The battery rack 30 may be a housing that stores power produced by various power generation devices and stores battery packs 10, 15, 20, 25 that supply the stored power as a load, and a plurality of display stands in a vertical direction Including, it is possible to accommodate a plurality of battery packs (10, 15, 20, 25) on the display shelf. In addition, a plurality of battery packs 10, 15, 20, and 25 may be displayed in a horizontal direction within a specific display stand.

In addition, other configurations to be described later may be installed in the battery rack 30, and the ESS fire extinguishing system according to the present invention may be formed by combining these configurations.

The fire detector 70 detects when a fire occurs around the battery rack 30 or the battery rack 30 so that the fire extinguishing device 60, the water supply equipment 80, and the fire curtain 50 can be operated. .

At this time, the fire occurrence signal of the fire detector 70 is directly transmitted to the fire extinguishing device 60, the water supply equipment 80, and the fire curtain 50, or through a separate control device such as a fire receiver. ), water supply equipment 80 and fire curtain 50. Meanwhile, the fire detector 70 may be connected to the control device, the fire extinguishing device 60, the water supply equipment 80, and the fire curtain 50 by wire or wirelessly.

The fire detector 70 may be installed inside the battery rack 30 or may be installed around the battery rack 30.

In addition, a smoke detector may be used as the fire detector 70, but the present invention is not limited thereto.

The fire extinguishing device 60 is a device installed in the battery rack 30 to inject an extinguishing material when the fire detector 70 transmits a fire occurrence signal.

Looking at the process of the fire extinguishing device 60 spraying the extinguishing material, the fire detector 70 detects a fire and transmits a fire occurrence signal, and then the fire extinguishing device 60 directly or indirectly receiving the fire occurrence signal is a battery rack. Fire can be extinguished by spraying extinguishing material toward (30).

On the other hand, the battery for ESS may be a lithium-ion battery, and since this lithium-ion battery has a long residual time of 2 to 4 hours due to its high accumulated energy density, it is not easy to extinguish a fire with a gas-based fire extinguisher that is temporarily released.

Therefore, in consideration of this point, the fire extinguishing device 60 according to the present invention may include a fire extinguisher, and by using the fire extinguisher, it is possible to effectively extinguish a fire against a lithium ion battery fire having a long residual time.

The fire extinguishing device 60 may have an injection nozzle positioned inside the battery rack 30, and extinguish a fire by spraying an extinguishing material through the injection nozzle.

The neutralization tank 40 is installed under the battery rack 30 to accommodate the electrolytic material 100 leaked from the battery packs 10, 15, 20, 25, and when a fire signal is transmitted, water 90 ) Is supplied and the water 90 neutralizes the electrolytic material 100.

When a fire occurs in the battery packs 10, 15, 20, and 25, the electrolytic material 100 attached to the fire 110 of the battery may flow and spread the fire. Therefore, it is necessary to block the flow of the electrolyte material 100 and neutralize the electrolyte material 100.

In addition, when the electrolytic material 100 exceeds the ignition point due to overheating in the battery, the electrolytic material 100 or the electrolyte acts as a fuel such as oil, and through a chemical reaction with oxygen released from the positive electrode active material. Thermal runaway may occur.

In consideration of this point, the neutralization tank 40 for accommodating the electrolytic material 100 may be installed under the battery rack 30 to accommodate the descending electrolytic material 100. In addition, the water supply equipment 80 supplies water 90 to the neutralization tank 40 when receiving a fire occurrence signal from the fire extinguishing device 60 so that the electrolytic material 100 is neutralized with the water 90. I can.

The water supply equipment 80 may include a water supply source, a water supply pipe, and a solenoid valve, and one end of the water supply pipe is connected to a water supply source, and the other end is connected to the connection hole 45 of the neutralization tank 40, and the solenoid valve is It can be installed in the middle of the water pipe.

When receiving a fire occurrence signal directly or indirectly from the fire detector 70, the solenoid valve opens the flow path of the water supply pipe so that the water 90 provided from the water supply source flows to the neutralization tank 40 through the water supply pipe. , The water 90 flowing into the neutralization tank 40 may neutralize the descending electrolytic material 100 (see FIG. 5).

In addition, the neutralization tank 40 may be a drawer type that is inserted and removed from the battery rack 30, and thus the electrolytic material 100 contained in the neutralization tank 40 can be easily removed to the outside, and The replacement of the water tank 40 is convenient.

On the other hand, the neutralization tank 40 may be made of a transparent material, and accordingly, the internal state of the neutralization tank 40 can be visually confirmed. Therefore, whether the electrolytic material 100 is sufficiently accommodated in the neutralization tank 40 to remove the electrolytic material 100, whether the neutralization tank 40 needs to be replaced due to damage to the neutralization tank 40 itself. Etc. can be easily grasped.

The fire curtain 50 is a curtain installed in the battery rack 30 to block the propagation of flames, reflected heat, fire 110, high temperature heat, or smoke by falling when a fire occurrence signal is transmitted.

When a fire occurs in a specific battery rack 30, the fire may propagate to the surrounding battery rack 30, and to prevent this, a fire generated in a specific battery rack 30 proceeds only inside the battery rack 30. And need to be digested later.

To this end, in the case of the present invention, a fire curtain 50 is installed on one or more side surfaces 35 of both sides 35 of the battery rack 30, and the installed fire curtain 50 is transmitted from the fire detector 70. When receiving a fire signal, the curtain can be lowered to prevent the fire or smoke from propagating to the surroundings (see FIG. 6).

Through this blocking, the spread of fire can be prevented and a large fire can be prevented.

On the other hand, the fire curtain 50 may be located above the battery rack 30 while being wound on a rotation shaft in general, but in case of a fire, the fire curtain 50 wound up due to the rotation of the rotation shaft is It is possible to close the battery rack 30 while descending.

2 and 3, a detailed operation example of the fire curtain 50 will be described in more detail. First, FIG. 2 is a view showing a process of descending the fire curtain 50 and a related configuration.

The fire curtain 50 is a winding shaft 140 on which the fire screen 120 is wound, a toothed structure 150 formed at one end of the winding shaft 140, and a toothed structure 150 caught by the teeth of the toothed structure 150 It includes a stop 160 for preventing the rotation of the stop, and a solenoid structure 170 for horizontally moving the stop 160.

Usually, the fire screen 120 is wound around the winding shaft 140 to open the battery rack 30, but in the event of a fire, the current supply source 180 can supply current to the solenoid of the solenoid structure 170, and the current The solenoid supplied with may generate magnetic force to move the stop 160 horizontally.

Therefore, by magnetic force, the stop 160 can be moved horizontally to the left side of the drawing to be separated from the teeth, and as a result, the toothed structure 150 rotates, and at the same time, the winding shaft 140 integral with the toothed structure 150 ) Can also be rotated.

In this case, the fire screen 120 wound around the take-up shaft 140 starts to be unwound by the rotation of the take-up shaft 140, and both sides by gravity applied to the weight member 125 including the weight located under its own. While descending along the guide bar 210 located at, the battery rack 30 begins to close.

Thereafter, while the magnet 130 installed on the weight member 125 adheres to the magnet located below the side of the battery rack 30, the fire screen 120 may close the side of the battery rack 30 from the outside.

On the contrary, after the fire is extinguished, the rewind tool 200 may be used to rewind the fire screen 120 to the winding shaft 140, and for this purpose, one end of the winding shaft 140 located inside the curtain housing 190 On the surface, a fitting groove 195 may be formed to be inserted into the rewind tool 200, and the rewind tool 200 may be rotated by an operator or a machine after being inserted into the fitting groove 195.

As the rewind tool 200 rotates while being fitted in the fitting groove 195 in this way, the winding shaft 140 rotates, and as a result, the fire screen 120 may be wound around the winding shaft 140 while moving upward. have.

On the other hand, the shape of the above-described fire curtain 50 is one embodiment, and if the side of the battery rack 30 can be opened or closed, another type of fire curtain may be applied.

The ESS fire extinguishing system according to an embodiment of the present invention has been described above, and an ESS fire extinguishing system according to another embodiment of the present invention will be described below with reference to FIG. 7. 7 is a view showing an electrolytic material neutralization system of an ESS fire extinguishing system according to another embodiment of the present invention.

Referring to FIG. 7, in the case of an ESS fire extinguishing system according to another embodiment of the present invention, a difference may be seen in the water supply equipment and the neutralization tank from the ESS fire extinguishing system described above.

Specifically, the water collecting plate 220 may be installed along the inner circumference of the battery rack 30 at the upper portion of the neutralization tank 40 in the lower portion of the battery rack 30. In addition, the water supply source of the water supply equipment may be a water tank 230 installed inside the battery rack 30 or outside the battery rack 30.

This water tank 230 may be connected to one end of the water supply pipe 250, and the other end of the water pipe 250 may be located above the neutralization water tank 40, and receive current from a current source to receive the water supply pipe 250 A solenoid valve 240 for opening and closing may be installed in the middle of the water supply pipe 250.

When a fire occurrence signal is received, the solenoid valve 240 opens the water supply pipe 250 so that the water 90 supplied from the water tank 230 falls into the neutralization tank 40 so that the neutralization tank 40 Water (90) can be provided to the water, as a result, water (90) can neutralize the electrolytic material (100).

Meanwhile, the water tank 230 installed inside the battery rack 30 may be made of plastic, and the water tank 230 made of plastic may be melted by the fire 110 or heat of a fire, and as a result, the solenoid valve ( Even if 240 is broken, the water tank 230 may directly supply water 90 to the neutralization tank 40 without passing through the water supply pipe 250.

At this time, the water 90 from the water tank 230 melted by the fire may more effectively move to the neutralization tank 40 through the water collecting plate 220.

The ESS fire extinguishing system according to one embodiment and another embodiment of the present invention has been described above, and an ESS fire extinguishing system according to another embodiment of the present invention will be described below with reference to FIG. 8. 8 is a simplified perspective view of an ESS fire extinguishing system according to another embodiment of the present invention.

Referring to Figure 8, the ESS fire extinguishing system according to another embodiment of the present invention may be composed of a plurality of battery racks 250, not a single battery rack, such a plurality of battery racks 250 along the side Arrangements can be shown arranged in a line.

A fire detector 70 may be installed inside each battery rack 250, and a plurality of fire detectors 70 may be connected to each other and to the fire receiver 280 by wire or wirelessly.

In addition, a spray nozzle 270 of a fire extinguishing device may be located inside each battery rack 250, and each of the spray nozzles 270 may be connected to the body 290 of the fire extinguishing device located outside through a connection pipe. In addition, the fire extinguishing material provided by the fire extinguishing device may move to each spray nozzle 270 through the connection pipe.

In addition, a solenoid valve 260 may be installed in each of the connection pipes, and when a fire occurs, the solenoid valve 260 opens the connection pipe so that the extinguishing material is transferred to the inside of the battery rack 250 through the spray nozzle 270 Can be sprayed with.

On the other hand, a fire may occur locally only in some battery racks 250, and in consideration of this point, the solenoid valve 260 may be selectively operated manually or by a control device to open the corresponding connection pipe. As a result, waste of extinguishing material can be avoided.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

10, 15, 20, 25: battery pack 30: battery rack
35: side of the battery rack 40: neutralization tank
45: connector 50: fire curtain
60: fire extinguishing device 70: fire detector
80: water supply equipment 90: water
100: electrolytic material 110: fire

Claims (7)

As an ESS fire extinguishing system of ESS (Energy Storage System) that stores generated electricity and supplies it when necessary,
The ESS fire extinguishing system,
A battery rack storing a battery pack;
A fire extinguishing device installed in the battery rack to inject an extinguishing material when the fire detector transmits a fire occurrence signal; And
An ESS that is installed under the battery rack to accommodate the electrolyte material flowing out of the battery pack, and includes a neutralization tank that receives water when the fire occurs signal is transmitted to neutralize the electrolyte material. Digestive system. The method of claim 1,
The ESS fire extinguishing system further comprises a fire curtain installed in the battery rack to block the propagation of flames, reflected heat or high-temperature heat by descending when the fire occurrence signal is transmitted. The method of claim 1,
The extinguishing device is an ESS fire extinguishing system including a foam fire extinguisher. The method of claim 1,
Further comprising a water tank installed inside the battery rack to supply water to the neutralization tank,
The water tank is an ESS fire extinguishing system made of plastic. The method of claim 1,
The neutralization tank is a drawer type ESS fire extinguishing system that is inserted and removed from the battery rack. The method of claim 1,
The battery rack is plural,
A plurality of battery racks are arranged in a line along the side,
Inside each battery rack, the spray nozzle of the fire extinguishing device is located, and each spray nozzle is connected to the body of the fire extinguishing device through a connection pipe,
In the event of a fire, an ESS fire extinguishing system in which the fire extinguishing material provided by the fire extinguishing device moves to each spray nozzle through the connection pipe. The method of claim 6,
A solenoid valve is installed in the connection pipe,
ESS fire extinguishing system that opens the connection pipe by selectively operating the solenoid valve when a fire occurs locally only in some battery racks.

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