KR102050803B1 - Automatic Fire Extinguishing System To prevent Fire Sensing and Explosion Of Energy Storage Device - Google Patents

Abstract

The present invention relates to an automatic fire extinguishing system for detecting a fire and preventing the fire from spreading in an energy-saving system (ESS), to prevent an explosion of the ESS. According to the present invention, the automatic fire extinguishing system comprises: an ESS storing a plurality of lithium ion batteries and having a plurality of nozzles installed on one surface; a piping unit inducting air from the ESS; a fire sign detection unit including a smoke detection module inducting the air from the ESS to detect smoke and an infrared camera module measuring a temperature change in the ESS; a monitoring unit connected to the smoke detection module to perform data-communication with the smoke detection module; a powder extinguisher unit; a liquid extinguisher unit; and an aerosol extinguisher unit.

Description

Automatic Fire Extinguishing System To prevent Fire Sensing and Explosion Of Energy Storage Device}

The present invention relates to a fire detection and diffusion prevention fire extinguishing device for a battery intensive energy storage system (ESS) such as a lithium ion battery.

Energy storage is divided into physical energy storage and chemical energy storage. Typical physical energy storage includes pumping generation, compressed air storage and flywheel. Chemical energy storage includes lithium ion batteries, lead acid batteries, and NaS batteries. The structure that stores energy in batteries is called BESS (Battery Energy Storage System). Generally this is called ESS. These ESSs store more than a few hundred kWh of power.

However, ESS has the disadvantage of being vulnerable to high temperatures. In particular, a plurality of intensively installed, such as a lithium ion battery, the energy storage system for storing power therein has a high risk of fire.

Republic of Korea Patent Registration No. 10-1822928 (Notice: 2018.01.29.)

The problem to be solved by the present invention is to provide an automatic fire extinguishing system to detect the fire precursor of a battery-intensive energy storage system (ESS), such as a lithium-ion battery, so that the explosion of the ESS does not occur.

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

Energy storage device (ESS) of the present invention for achieving the above technical problem fire extinguishing system for automatic detection and diffusion prevention,

An energy storage system (ESS) in which a plurality of lithium-ion batteries are stored, and in which a plurality of nozzles are installed;

A pipe unit installed in the energy storage system to suck air in the energy storage system;

One end is connected to the other end of the pipe portion, the smoke detection module for sucking and detecting the air inside the energy storage system and the infrared camera module installed outside the energy storage system, to measure the temperature change of the energy storage system Fire precursor detection unit comprising a;

A monitoring unit connected to the smoke detection module by wire or wirelessly and communicating data with the smoke detection module;

One end of the plurality of nozzles are installed in any one of the nozzles and the fire extinguishing powder pipe which is the movement path of the extinguishing powder and the powder fire extinguisher storing the extinguishing powder and is installed in the fire extinguishing powder pipe, the monitoring unit is connected to the monitoring A powder fire extinguisher unit including a fire extinguishing powder control valve for controlling a movement amount of the fire extinguishing powder moving to the fire extinguishing powder pipe in response to a signal transmitted from the unit;

One end of the plurality of nozzles is installed in the other one of the liquid fire extinguishing agent pipe which is the movement path of the liquid fire extinguishing agent, the liquid fire extinguishing agent storing the liquid fire extinguishing agent and the liquid fire extinguishing agent pipe, the monitoring A liquid fire extinguisher unit including a liquid control valve connected to a unit and controlling a movement amount of the liquid extinguishing agent moving to the liquid extinguishing agent pipe in response to a signal transmitted from the monitoring unit;

An aerosol digester installed in the energy storage system and connected to the monitoring unit to control an injection amount of aerosol into the energy storage system in response to a signal transmitted from the monitoring unit;
And an image detecting sensor installed on one surface of the energy storage system ESS to photograph the first nozzle connected to the powder fire extinguisher and the second nozzle connected to the liquid fire extinguisher.
The monitoring unit receives the nozzle image photographed by the image detection sensor, and closes the fire extinguishing powder control valve and the liquid control valve when the received nozzle image is different from the normal image stored in advance.
When the monitoring unit detects a fire precursor signal in at least one of the smoke detection module and the infrared camera module, after operating the aerosol fire extinguisher for a first set time, the fire in the infrared camera module after the first set time. When the precursor signal is detected, the powder fire extinguisher is operated for a second set time, the liquid fire extinguisher is operated, and the aerosol fire extinguisher is operated for the first set time, and when the fire is extinguished, the powder fire extinguisher and the liquid fire extinguisher are operated. Do not operate the unit.

The monitoring unit,

While maintaining the powder fire extinguisher portion, the liquid fire extinguisher portion and the aerosol fire extinguisher in the normal operation state,

When the fire precursor signal is received by the fire precursor detection unit, the liquid fire extinguisher and the aerosol fire extinguisher may be operated.

delete

delete

The smoke detection module, one end is connected to the other end of the pipe portion, the inhaler for sucking the air therein, the dust filter for filtering the dust in the air, the smoke detection sensor for detecting the filtered air, the smoke detection sensor and It may include a controller connected to receive the detection signal.

delete

The monitoring unit may include a buzzer module and a display module to output data transmitted from the fire precursor detection unit as a sound and a screen.

The present invention detects a fire precursor of a battery-intensive energy storage system (ESS) such as a lithium ion battery, so that an explosion of the ESS does not occur.

In addition, the present invention by spraying the gas, liquid, powder extinguishing agents at the same time to be able to quickly extinguish the fire generated in the metal.

1 is a schematic diagram of an automatic fire extinguishing system for energy storage device (ESS) fire detection and diffusion prevention according to an embodiment of the present invention.
2 is an operation flowchart of an automatic fire extinguishing system for detecting and spreading an energy storage device (ESS) fire according to an embodiment of the present invention.
3 is a view illustrating an image detection sensor installed in an automatic fire extinguishing system for detecting and spreading an energy storage device (ESS) fire according to an embodiment of the present invention.
4 is a view showing the connection between the internal structure of the smoke detection module of Figure 1 and the smoke detection module.
5 is an operation of the smoke detection module of FIG.
6 is an operation of the automatic fire extinguishing system for detecting and spreading the energy storage device (ESS) fire according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. This embodiment is provided only to make the disclosure of the present invention complete and to fully inform the scope of the invention to those skilled in the art.

This specification describes the components and operation of the automatic fire extinguishing system for energy storage device (ESS) fire detection and diffusion prevention according to an embodiment of the present invention with reference to FIGS. do.

However, the process in which the aerosol described throughout this specification by the phase change by the heat is injected into the digestion gas is described in the registered number 10-1643211 registered by the same applicant as the present invention. Therefore, in the present specification, a detailed description of the process in which the aerosol is vaporized to gas so as to simplify the description is omitted.

1 is a schematic diagram of an automatic fire extinguishing system for energy storage device (ESS) fire detection and diffusion prevention according to an embodiment of the present invention, Figure 2 is an energy storage device (ESS) fire detection and diffusion according to an embodiment of the present invention This is a flow chart of the automatic fire extinguishing system for prevention. FIG. 3 is a view illustrating an image sensing sensor installed in an automatic fire extinguishing system for energy storage device (ESS) fire detection and diffusion prevention according to an embodiment of the present invention.

The automatic fire extinguishing system 1 for detecting and spreading an energy storage device (ESS) fire detects a fire precursor of a battery-intensive energy storage system 10 such as a lithium ion battery, and based on the detected fire precursor data, 10) At the same time spray a gas, liquid, powder extinguishing agent. Through this, a fire does not occur in the energy storage system 10.

That is, the automatic fire extinguishing system 1 for detecting and spreading the energy of the ESS fire detects the fire precursor of the energy storage system 10 and copes with it in advance. An explosion accident occurs due to the fire in the energy storage system 10. Do not

Energy storage device (ESS) automatic fire extinguishing system (1) for fire detection and diffusion prevention is the energy storage system 10, piping 20, fire precursor detection unit 30, monitoring unit 40, powder fire extinguisher 50 ), The liquid fire extinguisher 60, and the aerosol fire extinguisher 70. The apparatus may further include a plurality of nozzles installed in the energy storage system 10 and an image detection sensor 80 photographing the nozzles 110.

Hereinafter, the components constituting the automatic storage system 1 for energy storage device (ESS) fire detection and diffusion prevention will be described in detail.

The energy storage system 10 may include a plurality of lithium-ion batteries to output electricity charged and charged with electrical energy. The energy storage system 10 is formed in a sealed structure. In addition, the energy storage system 10 has at least one partition wall 120 formed therein, so that a region in which a lithium ion battery is installed may be divided into a plurality.

In addition, the inside of the energy storage system 10, the nozzle 110 for increasing the injection force of the extinguishing agent sprayed from the pipe 20 and the powder fire extinguisher 50, the liquid fire extinguisher 60, which is a moving pipe of the smoke. A plurality of) are installed. And outside the fire precursor winding unit 30 to detect the smoke and heat generated from the lithium ion battery is installed.

The pipe 20 is installed in the energy storage system 10 to allow air and smoke in the energy storage system to move to the smoke detection module 310 of the fire precursor detection unit 30. The pipe part 10 is formed in a hollow shape.

The fire precursor detecting unit 30 detects a state of the energy storage system 10 and detects a precursor to an accident occurring in the energy storage system 10. The fire precursor detecting unit 30 detects a temperature state of the energy storage system 10 and whether smoke is generated. The fire precursor detection unit 30 has one end connected to the other end of the pipe portion, and includes a smoke detection module 310 for detecting air by sucking air in the energy storage system and an infrared camera module 320 for detecting a temperature change. .

Here, the smoke detection module 310 detects the state of the air by sucking the air and smoke of the energy storage system. The air state data is transmitted to the monitoring unit 40. The components of the smoke detection module 310 will be described later.

The infrared camera module 320 is formed of a plurality of infrared cameras as shown in the drawing, and captures a certain region of the energy storage system 10 and detects a temperature change of the energy storage system 10. Then, the detected temperature change data is transmitted to the monitoring unit 40.

The monitoring unit 40 is connected to the fire precursor detecting unit 30 by wire or wirelessly. The monitoring unit 40 may perform data communication with the fire precursor detection unit 30 to calculate the received data. The monitoring unit 40 may include a buzzer module 410 and a display module 420 to output data transmitted from the fire precursor detecting unit 30 as a sound and a screen. Furthermore, the display module 420 is provided with a mathematical algorithm program. Thus, the display module 20 may divide the received data into several stages to grasp the state of the energy storage system 10 step by step. The display module 420 may be formed of a computer as an example.

The monitoring unit 40 outputs a sound by driving the buzzer module 410 by using the precursor signal from the fire precursor detecting unit 30. And outputs a danger warning signal to the display module 420. The powder fire extinguisher 50, the liquid fire extinguisher 60 and the aerosol fire extinguisher 70 are driven.

The powder fire extinguisher unit 50 includes a fire extinguishing powder pipe 510, a powder fire extinguisher 520, and a fire extinguishing powder control valve 530. The powder fire extinguisher 50 allows the extinguishing powder in which the powder fire extinguisher 520 is stored to be sprayed through any one nozzle among the plurality of nozzles, that is, the first nozzle 111. In addition, the powder fire extinguisher 50 is the fire extinguishing powder control valve 530 is connected to the monitoring unit 40, the opening and closing amount is controlled in response to the signal transmitted from the monitoring unit 40, the amount of fire extinguishing powder can be controlled have.

The liquid fire extinguisher unit 60 includes a liquid fire extinguishing agent pipe 610, a liquid fire extinguishing agent fire extinguisher 620, and a liquid control valve 630. The liquid fire extinguisher 60 may spray the liquid fire extinguishing agent stored in the liquid fire extinguishing agent 620 to one of the plurality of nozzles, that is, the second nozzle 112. Herein, the liquid fire extinguishing agent is water having low electrical conductivity, that is, 40 to 60 parts by weight of deionized water, 9 to 15 parts by weight of a fire extinguishing agent mixed with potassium bicarbonate and ammonium phosphate, 8 to 15 parts by weight of surfactant, and 1 to 5 emulsifiers. It may be composed of 15 parts by weight and 35 parts by weight of antifreeze.

Liquid fire extinguisher 60 is the liquid control valve 630 is connected to the monitoring unit 40, the opening and closing amount is controlled in response to the signal transmitted from the monitoring unit 40 to control the injection amount of the extinguishing agent and to spray the extinguishing agent Can be.

In addition, the image sensor 80 may photograph the first nozzle 111 connected to the powder fire extinguisher 50 and the second nozzle 112 connected to the liquid fire extinguisher 60. The photographed image may be transmitted to the monitoring unit 40.

At this time, the monitoring unit 40 receives the nozzle image photographed by the image sensor 80, and when the received nozzle image is different from the normal image stored in the fire extinguishing powder control valve 530 and the liquid control valve ( 630 may be closed.

The aerosol digester unit 70 becomes a device for injecting a solid aerosol. The aerosol digester unit 70 may be installed on the top of the energy storage system 10 and connected to the monitoring unit 40.

The aerosol digester 70 may adjust and inject aerosol injection into the energy storage system in response to a signal transmitted from the monitoring unit 40.

The automatic fire extinguishing system 1 for detecting and spreading the energy storage device (ESS) fire, which is composed of such components, detects a change in the state of the energy storage system 10 by the fire precursor detection unit 30 and monitors the detected signal. Transmitting to the unit 40 and driving the aerosol digester 70, powder digester 50 and the liquid digester 60 by calculating the signal received from the monitoring unit 40. The automatic fire extinguishing system 1 for detecting and spreading the energy of the ESS fire is driven in such a step, and detects the fire precursor of the energy storage system 10 and copes with it in advance. Prevent explosions from fire.

Hereinafter, the components of the smoke detection module will be described in more detail with reference to FIGS. 4 and 5.

4 is a view showing a connection relationship between the internal structure of the smoke detection module and the smoke detection module of Figure 1, Figure 5 is an operation of the smoke detection module of FIG.

The smoke detection module 310 detects the presence of smoke by filtration after inflow of air and discharges the filtered air to the outside.

The smoke detection module 310 has a suction port 221 formed at one end thereof, a housing 210 having an exhaust port 222 formed at the other end thereof, and an inhaler 311 installed in the housing 210, a dust filter 312, and smoke detection. The sensor 313, the controller 314, the exhaust module 315, the differential pressure sensor 2520, the laser chamber 316, and the like are included as components. In addition, the smoke detection module 310 may be installed in the housing 210 may include a PCB plate 260 in which the voice alarm device is installed. Here, the inhaler 311 is a device for sucking air. One end of the inhaler 311 is connected to the other end of the pipe part 10 to allow the air in the set area to be sucked from the pipe part 10. The inhaler 311 may be formed of at least one fan (FAN).

The dust filter 312 filters the air sucked through the inhaler 311. The dust filter 312 may be installed between the differential pressure sensor 2520. The differential pressure sensor 2520 measures the pressure before and after the air passes through the filter 2510 using the first pressure sensor 2521 and the second pressure sensor 2522. At this time, the first pressure sensor 2521 is located in one direction of the filter to measure the pressure of the air flowing from the inhaler 311 and the second pressure sensor 2522 is located in the other direction of the filter, the differential pressure sensor ( 2520 measures the pressure before and after the dust filter 312 passes.

The smoke detection module 310 configured as described above detects smoke by scattering due to dust by irradiating light rays to the air passing through the dust filter 312 and detects the amount of dust according to the scattering presence and the degree of scattering. According to the detected state, the smoke detection module 310 may determine whether smoke is occurring in the energy storage system.

Hereinafter, an operation according to an embodiment of an automatic fire extinguishing system for detecting and spreading energy of an ESS fire will be described with reference to FIG. 6.

6 is an operation of the automatic fire extinguishing system for detecting and spreading the energy storage device (ESS) fire according to an embodiment of the present invention.

As shown, the energy storage system 10 may be partitioned into a plurality of spaces by partition walls. In the present specification, the energy storage system 10 is connected to the first compartment space S1 by one partition wall 120 so that the description of the automatic fire extinguishing system for detecting and storing the energy storage device (ESS) fire can be made simple and clear. What is divided into 2nd compartment space S2 is demonstrated as an example.

The first aerosol digester 71, the first digestive powder conduit 511, the first digestive powder control valve 531, the first powder extinguisher 521, and the first conduit 21 are located in the first compartment S1. ) Is installed. In addition, the first infrared camera module 321 may be installed outside the first compartment space S1.

The second aerosol digester unit 72, the second fire extinguishing powder pipe 512, the second fire extinguishing powder control valve 532, the second powder fire extinguisher 522, and the second pipe part 22 in the second compartment space S2. ) Is installed. In addition, a second infrared camera module 322 may be installed outside the second compartment space S2.

As described above, the above-described devices are installed in the first compartment S1 and the second compartment S2, and the automatic fire extinguishing system 1 for detecting and spreading the energy of the energy storage device ESS is generated in each compartment. Fire precursors can be detected. In addition, by selectively controlling the valves of the fire extinguishing agents installed for each zone, the fire extinguishing liquid may be discharged to a zone where a fire may occur. For example, the automatic fire extinguishing system 1 for detecting and spreading an energy storage device (ESS) fire is usually provided in the first setting area through the monitoring unit 40, a powder fire extinguisher unit, a liquid fire extinguisher unit, an aerosol fire extinguisher unit and (2) The powder fire extinguisher, the liquid fire extinguisher and the aerosol fire extinguisher provided in the setting area are kept in an inoperative state. Then, the automatic fire extinguishing system 1 for detecting and spreading the energy of the ESS fire detects a fire precursor signal in at least one of the smoke detection module and the infrared camera module of the fire precursor detection unit. The base and the liquid fire extinguisher may be operated sequentially.

The operation of the automatic fire extinguishing system 1 for detecting and spreading the energy storage (ESS) fire will be described in more detail. When the signal is detected, the aerosol digester unit 70 is operated for the first predetermined time. When the fire precursor signal is detected through the infrared camera module 320 even after the first set time, the powder fire extinguisher 50 is operated for a second set time. Thereafter, the liquid fire extinguisher 60 is operated.

In addition, the automatic fire extinguishing system 1 for detecting and spreading an energy storage device (ESS) fire operates the aerosol fire extinguisher unit 70 when a fire precursor signal is detected, and then, if the fire is extinguished, the powder fire extinguisher unit 50 is no longer used. And not to operate the liquid fire extinguisher (60).

On the other hand, if the fire is not prevented and the fire suppression by the aerosol fire extinguisher 70, the powder fire extinguisher 50 and the liquid fire extinguisher 60 is operated to extinguish the fire.

The automatic fire extinguishing system 1 for detecting and spreading an energy storage device (ESS) fire drives the aerosol fire extinguisher 70 to fire without damaging the lithium ion battery when a precursor signal for a fire is detected in the lithium ion battery. Can put down.

On the other hand, the automatic fire extinguishing system 1 for energy storage device (ESS) fire detection and diffusion prevention is subjected to the damage of the lithium ion battery if the fire continues to occur in the lithium ion battery even after the aerosol digester 70 is driven. 50 and the liquid fire extinguisher 60 may be driven sequentially. At this time, the automatic fire extinguishing system 1 for detecting and spreading the energy of the energy storage device ESS may include the powder fire extinguisher 50 in order to prevent the fire from increasing due to oxygen caused by the operation of the liquid fire extinguisher 60. 60) Drive before drive.

As described above, the automatic fire extinguishing system 1 for detecting and spreading an energy storage device (ESS) fire cools down the lithium ion battery through the liquid fire extinguisher unit 60 after discharging the fire generated through the powder fire extinguisher unit 50. It is possible to prevent the ion battery from generating a fire anymore.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1: Automatic fire extinguishing system to detect and prevent energy storage (ESS) fire
10: energy storage system 110: nozzle
120: bulkhead
111: first nozzle 112: second nozzle
20: piping 30: fire precursor detection unit
310: smoke detection module 320: infrared camera module
40: monitoring unit
50: powder fire extinguisher 510: digestive powder piping
520: powder fire extinguisher 530: fire extinguishing powder control valve
60: liquid fire extinguisher 610: liquid fire extinguishing agent piping
620: liquid fire extinguishing agent 630: liquid control valve
70: aerosol digester 80: image detection sensor

Claims (6)

An energy storage system (ESS) in which a plurality of lithium-ion batteries are stored, and in which a plurality of nozzles are installed;
A pipe unit installed in the energy storage system to suck air in the energy storage system;
One end is connected to the other end of the pipe portion, the smoke detection module for sucking and detecting the air inside the energy storage system and the infrared camera module installed outside the energy storage system, to measure the temperature change of the energy storage system Fire precursor detection unit comprising a;
A monitoring unit connected to the fire precursor detecting unit by wire or wirelessly and communicating data with the fire precursor detecting unit;
One end of the plurality of nozzles are installed in any one of the nozzles and the fire extinguishing powder pipe which is the movement path of the extinguishing powder and the powder fire extinguisher storing the extinguishing powder and is installed in the fire extinguishing powder pipe, the monitoring unit is connected to the monitoring A powder fire extinguisher unit including a fire extinguishing powder control valve for controlling a movement amount of the fire extinguishing powder moving to the fire extinguishing powder pipe in response to a signal transmitted from the unit;
The liquid extinguishing agent pipe, one end of which is installed in the other one of the plurality of nozzles, becomes a moving path of the liquid extinguishing agent, the liquid extinguishing agent storing the liquid extinguishing agent, and the liquid extinguishing agent piping, and the monitoring A liquid fire extinguisher unit including a liquid control valve connected to a unit and controlling a movement amount of the liquid extinguishing agent moving to the liquid extinguishing agent pipe in response to a signal transmitted from the monitoring unit;
An aerosol digester installed in the energy storage system and connected to the monitoring unit to control an injection amount of aerosol into the energy storage system in response to a signal transmitted from the monitoring unit;
And an image detecting sensor installed on one surface of the energy storage system ESS to photograph the first nozzle connected to the powder fire extinguisher and the second nozzle connected to the liquid fire extinguisher.
The monitoring unit receives the nozzle image photographed by the image detection sensor, and closes the fire extinguishing powder control valve and the liquid control valve when the received nozzle image is different from the normal image stored in advance.
When the monitoring unit detects a fire precursor signal in at least one of the smoke detection module and the infrared camera module, after operating the aerosol digester for a first set time, the fire in the infrared camera module after the first set time. When the precursor signal is detected, the powder fire extinguisher is operated for a second set time, the liquid fire extinguisher is operated, and the aerosol fire extinguisher is operated for the first set time. Automatic fire extinguishing system for detecting and spreading energy storage device (ESS) fires to prevent the operation of parts. The method of claim 1,
The monitoring unit,
While maintaining the powder fire extinguisher portion, the liquid fire extinguisher portion and the aerosol fire extinguisher in the normal operation state,
And when the fire precursor signal is received by the fire precursor detection unit, operating the liquid extinguisher unit and the aerosol extinguisher unit. An ESS fire detection and diffusion prevention automatic fire extinguishing system. delete The method of claim 1,
The smoke detection module, one end is connected to the other end of the pipe portion, the inhaler for sucking the air therein, the dust filter for filtering the dust in the air, the smoke detection sensor for detecting the filtered air, the smoke detection sensor and An automatic fire extinguishing system for detecting and spreading an energy storage device, comprising a controller connected to receive a detection signal. delete The method of claim 1,
The monitoring unit includes a buzzer module and a display module to output data transmitted from the fire precursor detection unit as sound and a screen, an energy storage device (ESS) fire detection and diffusion prevention automatic fire extinguishing system.

Images