Fire extinguishing system and method for battery equipment room

Abstract

To provide a fire extinguishing system and a fire extinguishing method for a rechargeable battery facility capable of preventing erroneous reporting and malfunction, and starting a fire extinguishing operation quickly.SOLUTION: A fire extinguishing system for detecting and extinguishing a fire in a rechargeable battery facility room having a plurality of rechargeable batteries for supplying power to the outside includes: a temperature sensor for detecting the temperature of the rechargeable batteries; a smoke sensor for detecting smoke in the rechargeable battery facility room; a fire extinguishing agent storage discharge device for discharging a fire extinguishing agent into the rechargeable battery facility room; and a fire extinguisher control board for controlling the fire extinguishing agent storage discharge device so as to extinguish a fire in the rechargeable battery facility room on the basis of the temperature detected by the temperature sensor and the smoke detected by the smoke sensor.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fire extinguishing system and a fire extinguishing method for extinguishing a fire in a battery equipment room that is provided with a plurality of storage battery units such as secondary batteries and supplies electric power to the outside. [Background technology]

[0002] Conventionally, in battery equipment rooms that are equipped with multiple storage battery units such as secondary batteries and supply power to the outside, a smoke detector or other detector is installed on the ceiling of the battery equipment room and a fire extinguishing system is installed that detects a fire by detecting smoke when a fire breaks out from the batteries and performs extinguishing action.

[0003] Security guards and other personnel are constantly on hand to determine whether a human is causing a fire based on fire signals from detectors and surveillance camera images, and either manually release extinguishing agents or have the security guards take fire extinguishers directly to the area where the fire signal was generated to carry out initial extinguishing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-198962 A [Patent Document 2] JP 2020-205717 A Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, conventional fire extinguishing systems for battery equipment rooms require personnel such as security guards to be stationed at all times, resulting in high costs.

[0006] In addition, battery storage equipment rooms that use lithium-ion (Li-ion) batteries are equipped with a vent function to prevent flammable gases from building up or exploding inside the batteries in the event of an increased risk of fire due to thermal runaway or other reasons.

[0007] With conventional smoke detectors, the flammable gas released from inside the battery into the battery equipment room through this vent can easily be mistaken for smoke from a fire, which can result in malfunctions such as false alarms and false emissions.

[0008] Furthermore, in conventional battery equipment rooms, gas fire extinguishing equipment is most suitable as it does not pose a risk of electrical leakage when used for extinguishing a fire, so gas fire extinguishing equipment is installed.

[0009] However, there is a high possibility that personnel will approach the fire scene to use fire extinguishers for initial extinguishing or to confirm the scene, and gas used as an extinguishing agent can have adverse effects on the human body, such as suffocation or poisoning, like carbon dioxide, so it is necessary to evacuate personnel before the extinguishing gas is released.

[0010] For this reason, security guards and others must check that no personnel are at the fire scene, which means that it takes a long time for the fire extinguishing equipment to release the extinguishing agent, which ultimately reduces the initial success rate of the fire extinguishing equipment.

[0011] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a fire extinguishing system and a fire extinguishing method that can quickly and appropriately respond to a fire while reducing false alarms and false activations. [Means for solving the problem]

[0012] A first invention is a fire extinguishing system that detects and extinguishes a fire in a battery equipment room that has a plurality of storage batteries and supplies power to the outside, the system including: a temperature detection means that detects a temperature of the storage batteries; a state detection means that detects a state inside the battery equipment room; an extinguishing agent storage and discharge means that discharges an extinguishing agent into the battery equipment room; and a fire extinguishing operation control means that controls the extinguishing agent storage and discharge means to extinguish the fire in the battery equipment room based on the temperature detected by the temperature detection means and the state inside the battery equipment room detected by the state detection means. the state detection means comprises a smoke detector for detecting a fire by detecting smoke in the battery equipment room, the temperature detection means comprises a temperature sensor for detecting whether or not the temperature of the battery exceeds a predetermined threshold, the predetermined threshold comprises a first threshold and a second threshold greater than the first threshold, and only when the temperature sensor detects a value exceeding the second threshold, the fire extinguishing operation control means controls the fire extinguishing agent storage and release means to release the fire extinguishing agent into the battery equipment room, and a display means is further provided, When the temperature sensor detects a value exceeding a first threshold value while the detector is not detecting smoke in the battery equipment room, a predetermined abnormality display is given on the display means, when the smoke detector detects smoke in the battery equipment room and the temperature sensor detects a value not exceeding the first threshold value, a first warning display is given on the display means, and when the smoke detector detects smoke in the battery equipment room and the temperature sensor detects a value exceeding the first threshold value, a second warning display is given on the display means. It is a fire extinguishing system.

[0013] The second invention is a fire extinguishing system according to the first invention, This is a fire extinguishing system in which the first warning sign is a warning sign saying "watch out for smoke generation" and the second warning sign is a warning sign saying "vent gas detection."

[0014] The third invention is A fire extinguishing method for a fire extinguishing system having temperature detection means for detecting a temperature of the storage batteries, state detection means for detecting a state within the storage battery equipment room, fire extinguishing agent storing and discharging means for discharging a fire extinguishing agent into the storage battery equipment room, and fire extinguishing operation control means for controlling the fire extinguishing agent storing and discharging means, in order to detect and extinguish a fire in a storage battery equipment room which is provided with a plurality of storage batteries and supplies electric power to the outside, the method comprising the steps of: detecting the temperature of the storage batteries by the temperature detection means; detecting a state within the storage battery equipment room by the state detection means; and controlling, by the fire extinguishing operation control means, the fire extinguishing agent storing and discharging means so as to extinguish the fire in the storage battery equipment room based on the temperature detected by the temperature detection means and the state within the storage battery equipment room detected by the state detection means, and a temperature sensor for detecting whether the temperature of the storage battery equipment room exceeds a predetermined threshold, the predetermined threshold consisting of a first threshold and a second threshold greater than the first threshold, and only when the temperature sensor detects a value exceeding the second threshold, the fire extinguishing operation control means controls to release the fire extinguishing agent into the storage battery equipment room, and the fire extinguishing method further comprises a display means, and when the temperature sensor detects a value exceeding the first threshold while the smoke detector is not detecting smoke in the storage battery equipment room, a predetermined abnormality display is made on the display means, when the temperature sensor detects a value exceeding the first threshold while the smoke detector is detecting smoke in the storage battery equipment room, a first warning display is made on the display means, and when the temperature sensor detects a value exceeding the first threshold while the smoke detector is detecting smoke in the storage battery equipment room, a second warning display is made on the display means. Effect of the Invention

[0024] According to the present invention, it is possible to obtain effects such as reducing false alarms and false activations and responding to fires quickly and appropriately. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic configuration diagram of a battery equipment room in which an embodiment of a fire extinguishing system according to the present invention is installed. FIG. [Diagram 2] FIG. 2 is a schematic configuration diagram of the battery equipment room 3 shown in FIG. [Diagram 3] 2 is a configuration block diagram of a storage battery unit 1 and a storage battery control panel 11. FIG. [Figure 4] FIG. 2 is a configuration block diagram of the fire extinguishing device control panel 17 in the central control room 5. [Diagram 5] 2 is a flowchart of a fire extinguishing method by the fire extinguishing system 21 shown in FIG. 1. [Figure 6] FIG. 2 is an operation matrix diagram of the fire extinguishing system 21 in the battery equipment room. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0027] A feature of the present invention is that not only the fire signal from the smoke detector but also the temperature information from the storage battery is used to judge a fire.

[0028] This will enable quicker and more efficient response to fires while reducing false alarms and false alarms.

[0029] FIG. 1 is a schematic configuration diagram of a battery equipment room in which an embodiment of a fire extinguishing system according to the present invention is installed.

[0030] As shown in Figure 1, there is a battery equipment room 3 that has a plurality of battery units 1 such as secondary batteries and supplies power to the outside, and a central control room 5 for a fire extinguishing system that detects and extinguishes fires in the battery equipment room 3. Between the battery equipment room 3 and the central control room 5, a fire extinguishing agent storage and release device (fire extinguishing agent storage and release means) 7 is provided.

[0031] In the battery equipment room 3, a battery unit 1, a monitoring camera 8, a temperature sensor (temperature detection means) 9, a battery control panel 11, an automatic closing device 13, and a smoke detector (status detection means) 15 are provided.

[0032] The battery control panel 11 controls the charging and discharging of the battery unit 1, and also controls a vent function that releases flammable gas accumulated inside the battery 1a to the outside of the battery equipment room 3.

[0033] In the central control room 5, a fire extinguishing device control panel (fire extinguishing operation control means) 17 and a monitoring monitor 18 are provided.

[0034] In one embodiment of the fire extinguishing system, the fire extinguishing system 21 includes a central control room 5, a fire extinguishing agent storage and release device 7, a surveillance camera 8, a temperature sensor 9, a battery control panel 11, an automatic closing device 13, and a smoke detector 15, as shown in FIG. 1.

[0035] The battery equipment room 3 and the central control room 5 are usually located within a building, and may be located in separate buildings or may be located within a single building.

[0036] FIG. 2 is a schematic configuration diagram of the battery equipment room 3 shown in FIG.

[0037] As shown in Figure 2, in the battery equipment room 3, a battery control panel 11 is connected to each of multiple (two in this embodiment) battery units 1, and each battery control panel 11 is connected to a fire extinguishing device control panel 17 in the central management room 5.

[0038] The extinguishing agent storage and release device 7 is connected to a fire extinguishing device control panel 17, and based on a fire extinguishing control signal from the fire extinguishing device control panel 17, the extinguishing agent from the extinguishing agent storage and release device 7 is released into the battery equipment room 3 from an agent release port 19 in the battery equipment room 3.

[0039] Here, carbon dioxide, nitrogen, IG-55, IG-541, or halide gas is used as the extinguishing agent. In addition, the extinguishing gas has a cooling effect due to the pressure drop when it is released, so it also cools the storage battery 1a and prevents thermal runaway.

[0040] In addition, the battery equipment room 3 is provided with a vent function for releasing flammable gas accumulated inside the battery 1a to the outside of the battery equipment room 3.

[0041] FIG. 3 is a configuration block diagram of the storage battery unit 1 and the storage battery control panel 11.

[0042] As shown in FIG. 3, the storage battery unit 1 is equipped with multiple storage batteries 1a, each of which is provided with a temperature sensor 9. Each temperature sensor 9 is connected to a measurement value output device 23, and a temperature signal from each temperature sensor 9 is input.

[0043] The storage battery control panel 11 has a first control unit 25, to which a charge / discharge control device 27, a first signal output device 29, and a display device (display means) 31 are connected.

[0044] The first control unit 25 receives the measurement value output from the measurement value output device 23 of the storage battery unit 1, and outputs a control signal from the first control unit 25 to the charge / discharge control device 27, the signal output device 29, and the display device 31. The first control unit 25 controls the charge / discharge of the storage battery unit 1 and also controls the vent function that releases flammable gas accumulated inside the storage battery 1a to the outside of the battery equipment room 3.

[0045] The first control unit 25 is usually composed of a CPU, RAM, ROM, etc., and outputs a control signal based on a control program stored in the ROM.

[0046] The charge / discharge control device 27 sends a charge / discharge command signal to the storage battery unit 1 , and the first signal output device 29 sends a battery abnormality signal to the fire extinguisher control panel 17 .

[0047] FIG. 4 is a configuration block diagram of the fire extinguishing device control panel 17 in the central control room 5.

[0048] As shown in FIG. 4, the fire extinguishing device control panel 17 has a second control section (fire extinguishing operation control means) 33, to which the smoke detector 15 and the storage battery control panel 11 are connected.

[0049] Furthermore, the second control unit 33 is adapted to receive a manual emergency stop signal and a manual start signal from an administrator 35 (see FIG. 1) watching the surveillance monitor 18 .

[0050] The second control unit 33 performs a display operation and a fire extinguishing operation as described below according to the flowchart of FIG.

[0051] The second control unit 33 is also generally composed of a CPU, RAM, ROM, etc., and outputs a control signal based on a control program stored in the ROM.

[0052] The fire extinguisher control panel 17 further includes a second signal output device 36 connected to the second control unit 33, a first audio device 37, and a first display device (display means) 39.

[0053] The second signal output device 36 is connected to the automatic closing section 41 of the automatic closing device 13, the second audio device 43, and the second display device 45, and is also connected to a starter device 47 of the fire extinguishing agent storage and release device 7.

[0054] In the fire extinguishing agent storage and discharge device 7, a container valve 51 of the fire extinguishing agent storage container 49 is connected to the starting device 47.

[0055] Furthermore, the fire extinguisher control panel 17 is provided with an emergency stop device 40 connected to the second control unit 33, so that the operation of the fire extinguisher can be manually stopped by a manual emergency stop signal.

[0056] In this embodiment, the smoke detector 15 is used to detect a fire, but a heat detector may be used instead, or a smoke detector and a heat detector may be used in combination.

[0057] In addition, in this embodiment, in the event of an increased risk of fire due to thermal runaway or the like in the storage battery unit 1, in order to prevent the accumulation and explosion of flammable gas inside the storage battery 1a, the storage battery unit 1 is provided with a vent function (not shown) that releases accumulated flammable gas to the outside of the storage battery equipment room 3.

[0058] In this embodiment, when the fire extinguishing device control panel 17 performs a fire extinguishing operation upon receiving a fire signal from the smoke detector 15, the fire extinguishing device control panel 17 has an accumulation function that holds the fire signal for a certain period of time, resets the detector once upon receiving a fire signal from the smoke detector 15, and issues an alarm upon receiving a second signal. This is a function to prevent malfunction.

[0059] FIG. 5 is a flowchart of a fire extinguishing method by the fire extinguishing system 21 shown in FIG.

[0060] FIG. 6 is an operation matrix diagram of the fire extinguishing system in the battery equipment room.

[0061] In step 101 of Figure 5, when the storage battery unit 1 is operating normally in the storage battery equipment room 3, if the monitoring state by the fire extinguishing system of the storage battery equipment room 3 shown in Figure 1 is initiated, in step 103, it is determined whether or not there is a fire signal from the smoke detector 15.

[0062] That is, an operation signal from the smoke detector 15, which is a status detection means for detecting the status inside the battery equipment room 3, is input to the second control unit 33 of the fire extinguishing device control panel 17, and the second control unit 33 determines whether or not there is a fire signal from the smoke detector 15.

[0063] If there is no fire signal from the smoke detector 15 in step 103, in step 105, the temperature of the storage battery unit 1 is detected and it is determined whether the temperature of the storage battery unit 1 exceeds a predetermined first threshold or a predetermined second threshold.

[0064] That is, the temperature of each storage battery 1a is detected by a temperature sensor 9 provided in each storage battery 1a of the storage battery unit 1, and the detected temperature information is input to the first control unit 25 of the storage battery control panel 11 via the measurement value output device 23, and the temperature information is transferred to the second control unit 33 of the fire extinguishing device control panel 17.

[0065] Then, the second control unit 33 determines whether or not the temperature information from the first control unit 25 exceeds the first threshold value or a second threshold value that is larger than the first threshold value.

[0066] Here, the first threshold is set to a temperature at which the storage battery 1a can be cooled if the load is removed, but which is considered to be an overload. The first threshold is selected from within a range of 150°C to 200°C, and is set to about 200°C in this embodiment.

[0067] The second threshold is set to a temperature at which cooling is not expected even if the load is removed from the storage battery 1a. The second threshold is selected from within a range of 250°C to 400°C, and is set to about 400°C in this embodiment.

[0068] If it is determined in step 105 above that the temperature of the storage battery unit 1 exceeds the first predetermined threshold, then in step 107, it is determined that each storage battery 1a has reached the end of its battery life or has failed, as shown in FIG. 6A.

[0069] In other words, when the second control unit 33 determines that the temperature information from the first control unit 25 exceeds the first threshold value, the second control unit 33 determines that each storage battery 1a has reached the end of its battery life or has failed, and determines that the risk of fire is low, and in step 109, the fire extinguishing operation is put on hold.

[0070] Here, a predetermined abnormality display is displayed on the display device 31 by the first control unit 25 of the storage battery control panel 11. This predetermined abnormality display is, for example, a display that reads "battery life or battery failure."

[0071] Furthermore, if the address of each storage battery 1a is set in the temperature information from the first control unit 25, the location of the storage battery having an abnormality can be quickly determined from the fire extinguishing equipment control panel 17, thereby speeding up on-site confirmation and shortening the time it takes to spray the extinguishing agent.

[0072] If there is no fire signal from the smoke detector 15 in step 103, and it is determined in step 105 that the temperature of the storage battery unit 1 exceeds a predetermined second threshold, then, as shown in B of FIG. 6, it is determined in step 111 that a fire has occurred, a confirmation operation is performed by the surveillance camera 8 in step 112, and a fire extinguishing operation is initiated in step 113.

[0073] In other words, when the second control unit 33 of the fire extinguisher control panel 17 determines that the temperature information from the first control unit 25 exceeds the second threshold, even if there is no fire signal from the smoke detector 15, after a confirmation operation is performed by the surveillance camera 8, the second control unit 33 determines that a fire has occurred and initiates fire extinguishing operation.

[0074] As for the confirmation operation, as shown in FIG. 1, a video signal of the storage battery unit 1 taken by the surveillance camera 8 is sent to the fire extinguishing device control panel 17 via the storage battery control panel 11, and within the central control room 5, the video signal is displayed on the surveillance monitor 18 by the fire extinguishing device control panel 17, and the manager 35 within the central control room 5 views and confirms the displayed video of the storage battery unit 1.

[0075] For the fire extinguishing operation, the second control unit 33 controls the first audio device 37 and the first display device (display means) 39 to issue an audio and visual fire alarm, and also controls the extinguishing agent storage and release device 7 to release the extinguishing agent from the extinguishing agent release port 19 to the storage battery unit 1.

[0076] That is, the battery equipment room 3 is closed by the automatic closing unit 41 of the automatic closing device 13 in Fig. 4 based on a control signal from the second control unit 33, and a fire or gas emission is notified by the second audio device 43 and the second display device (display means) 45. After the closure of the battery equipment room 3 is completed, the starting device 47 of the extinguishing agent storage and discharge device 7 in Fig. 4 is started based on a control signal from the second control unit 33, the starting device 47 opens the container valve 51, and the extinguishing agent is discharged from the extinguishing agent storage container 49 to the battery unit 1 via the extinguishing agent discharge port 19.

[0077] Furthermore, prior to the fire extinguishing operation in step 113, in step 112, a confirmation operation by the manager 35 is performed using the surveillance camera 8, so that it can be confirmed whether or not a security guard or the like is present at the fire scene to carry out initial fire extinguishing or to confirm the scene, thereby ensuring safety.

[0078] In other words, if a security guard or the like is identified at the fire scene within the protected area during the confirmation operation by the surveillance camera 8, or if it is determined to be an obvious false alarm, the manager 35 will input a manual emergency stop signal to the fire extinguisher control panel 17 to activate the emergency stop device 40 and prevent the start of fire extinguishing operations.

[0079] In other words, when the emergency stop device 40 is activated, an emergency stop signal is sent from the emergency stop device 40 to the extinguishing agent storage and release device 7 via the second signal output device 36, the start-up operation of the starting device 47 is stopped, the container valve 51 is closed, and the release of the extinguishing agent from the extinguishing agent storage container 49 is stopped.

[0080] In order to make the emergency stop device 40 less likely to be operated by mistake, a display indicating that the device will stop operating and measures to prevent erroneous operation may be provided.

[0081] Furthermore, by having the manager 35 check using the surveillance camera 8, the following effects can be obtained.

[0082] That is, in the past, it took a long time for the fire extinguishing equipment to release the extinguishing agent in order to confirm that there were no personnel at the fire scene, which resulted in a lower initial fire extinguishing success rate of the fire extinguishing equipment. However, since the manager 35 checks using the monitoring monitor 18 in the central control room 5, the checking can be done quickly and the time it takes for the fire extinguishing equipment to release the extinguishing agent can be shortened.

[0083] In this case, the fire extinguishing operation is carried out when there is no fire signal from the smoke detector 15.

[0084] Therefore, there is no delay due to the accumulation function that occurs when the fire extinguishing device control panel 17 performs a fire extinguishing operation upon receiving a fire signal from the smoke detector 15, and the fire extinguishing operation can be performed promptly.

[0085] If it is determined in step 105 that the temperature of the storage battery unit 1 does not exceed the predetermined first threshold, the monitoring state is maintained.

[0086] Next, if the smoke detector 15 is activated in step 103 and a fire signal is received from the smoke detector 15, the temperature of the storage battery unit 1 is detected in step 115, as in step 105, and it is determined whether the temperature of the storage battery unit 1 exceeds a predetermined first threshold value or a predetermined second threshold value.

[0087] That is, the temperature of each storage battery 1a is detected by a temperature sensor 9 provided in each storage battery 1a of the storage battery unit 1, and the detected temperature information is input to the first control unit 25 of the storage battery control panel 11 via the measurement value output device 23, and the temperature information is transferred to the second control unit 33.

[0088] Then, the second control unit 33 determines whether or not the temperature information from the first control unit 25 exceeds the first threshold value or a predetermined second threshold value.

[0089] Here, the first threshold is set to a temperature at which the storage battery 1a can be cooled if the load is removed, but which is considered to be an overload. The first threshold is selected from within a range of 150°C to 200°C, and is set to about 200°C in this embodiment.

[0090] The second threshold is set to a temperature at which cooling is not expected even if the load is removed from the storage battery 1a. The second threshold is selected from within a range of 250°C to 400°C, and is set to about 400°C in this embodiment.

[0091] If it is determined in step 115 above that the temperature of the storage battery unit 1 does not exceed the first predetermined threshold value, a first warning message is displayed in step 117, as shown in C of FIG.

[0092] That is, the second control unit 33 of the fire extinguisher control panel 17, which receives a fire signal from the smoke detector 15, displays a first warning message on the first display device (display means) 39. This first warning message displays, for example, "Caution: Smoke."

[0093] If in step 103 above the smoke detector 15 is activated and a fire signal is received from the smoke detector 15, and in step 115 above it is determined that the temperature of the battery unit 1 exceeds a predetermined first threshold, in step 118 a vent operation is assumed in which the flammable gas accumulated inside the battery 1a is released into the battery equipment room 3, and in step 119 it is determined that the smoke detector 15 has detected vent gas, as shown in FIG. 6D, and a second warning message is displayed.

[0094] That is, the second control unit 33 of the fire extinguisher control panel 17, which receives a fire signal from the smoke detector 15, displays a second warning indication on the first display device (display means) 39, indicating that vent gas has been detected. This second warning indication may be, for example, a display that reads "Vent gas detected."

[0095] This is because even if the smoke detector 15 is activated and a fire signal is received from the smoke detector 15, if the temperature information from the first control unit 25 is between the first threshold value and the second threshold value, it is assumed that what is detected by the smoke detector 15 is not smoke caused by a fire, but gas released from the storage battery 1a into the battery equipment room 3 due to the vent operation.

[0096] This second warning display reliably indicates the situation in which flammable gas accumulated inside the storage battery 1a is being released into the storage battery equipment room 3 by the vent function.

[0097] At this stage, it is not determined that a fire has occurred, and no fire extinguishing action is initiated.

[0098] Therefore, unlike the conventional smoke detector, there is no risk of the smoke detector mistaking the flammable gas released through the vent for smoke caused by a fire, resulting in erroneous operation such as erroneous alarm or false emission.

[0099] If in step 103 above the smoke detector 15 is activated and a fire signal is received from the smoke detector 15, and in step 115 above it is determined that the temperature of the storage battery unit 1 exceeds a predetermined second threshold, then in step 111 it is determined that a fire has occurred, as shown in FIG. 6E, and in step 112 a confirmation operation is performed by the surveillance camera 8, and in step 113 a fire extinguishing operation is initiated.

[0100] In other words, when the second control unit 33 of the fire extinguisher control panel 17 determines that the temperature information from the first control unit 25 exceeds the second threshold, even if there is no fire signal from the smoke detector 15, after a confirmation operation is performed by the surveillance camera 8, the second control unit 33 determines that a fire has occurred and initiates fire extinguishing operation.

[0101] As for the confirmation operation, as shown in FIG. 1, a video signal of the storage battery unit 1 taken by the surveillance camera 8 is sent to the fire extinguishing device control panel 17 via the storage battery control panel 11, and within the central control room 5, the video signal is displayed on the surveillance monitor 18 by the fire extinguishing device control panel 17, and the manager 35 within the central control room 5 views and confirms the displayed video of the storage battery unit 1.

[0102] For the fire extinguishing operation, the second control unit 33 controls the first audio device 37 and the first display device (display means) 39 to issue an audio and visual fire alarm, and also controls the extinguishing agent storage and release device 7 to release the extinguishing agent from the extinguishing agent release port 19 to the storage battery unit 1.

[0103] That is, the battery equipment room 3 is closed by the automatic closing unit 41 of the automatic closing device 13 in Fig. 4 based on a control signal from the second control unit 33, and a fire or gas emission is notified by the second audio device 43 and the second display device (display means) 45. After the closure of the battery equipment room 3 is completed, the starting device 47 of the extinguishing agent storage and discharge device 7 in Fig. 4 is started based on a control signal from the second control unit 33, the starting device 47 opens the container valve 51, and the extinguishing agent is discharged from the extinguishing agent storage container 49 to the battery unit 1 via the extinguishing agent discharge port 19.

[0104] Furthermore, prior to the fire extinguishing operation in step 113, in step 112, a confirmation operation by the manager 35 is performed using the surveillance camera 8, so that it can be confirmed whether or not a security guard or the like is present at the fire scene to carry out initial fire extinguishing or to confirm the scene, thereby ensuring safety.

[0105] In other words, if a security guard or the like is identified at the fire scene within the protected area during the confirmation operation by the surveillance camera 8, or if it is determined to be an obvious false alarm, the manager 35 will input a manual emergency stop signal to the fire extinguisher control panel 17 to activate the emergency stop device 40 and prevent the start of fire extinguishing operations.

[0106] In order to make the emergency stop device 40 less likely to be operated by mistake, a display indicating that the device will stop operating and measures to prevent erroneous operation may be provided.

[0107] Furthermore, by having the manager 35 check using the surveillance camera 8, the following effects can be obtained.

[0108] That is, in the past, it took a long time for the fire extinguishing equipment to release the extinguishing agent in order to confirm that there were no personnel at the fire scene, which resulted in a lower initial fire extinguishing success rate of the fire extinguishing equipment. However, since the manager 35 checks using the monitoring monitor 18 in the central control room 5, the checking can be done quickly and the time it takes for the fire extinguishing equipment to release the extinguishing agent can be shortened.

[0109] In this case, the fire extinguishing operation is carried out when there is no fire signal from the smoke detector 15.

[0110] Therefore, there is no delay due to the accumulation function that occurs when the fire extinguishing device control panel 17 performs a fire extinguishing operation upon receiving a fire signal from the smoke detector 15, and the fire extinguishing operation can be performed promptly.

[0111] In the case of the state shown in FIG. 6E, the smoke detector 15 is not reset.

[0112] The smoke detector 15 is reset after a certain period of time and its status is checked.

[0113] That is, it has a storage function that resets the detector once when a fire signal is received from the smoke detector 15, and issues an alarm when the second signal is received. This is a function to prevent malfunction.

[0114] The rightmost column in FIG. 6 shows the reset state of the smoke detector 15.

[0115] In other words, if the first threshold is not exceeded, as shown in F of Figure 6, if it is inactive after resetting, it will return to the monitoring state, and if it is active again after resetting, as shown in G of Figure 6, it will determine that a fire has occurred, assuming a source of fire other than the storage battery or a malfunction of the measuring equipment, and will start extinguishing operations.

[0116] Furthermore, when the first threshold is exceeded, if the alarm is not activated after resetting, as shown in FIG. 6H, the state returns to the monitoring state, and if the alarm is activated again after resetting, as shown in FIG. 6I, the second warning display continues.

[0117] As described above, according to the embodiment of the present invention, a comprehensive judgment is made on the temperature signal from the temperature sensor 9 provided in each storage battery 1a of the storage battery unit 1 and the fire signal from the smoke detector 15, and a prescribed warning display, fire display, and fire extinguishing operation are performed.

[0118] In other words, not only the fire signal from the smoke detector but also the temperature signal from the battery control panel is used to determine whether or not a fire has occurred.

[0119] This will enable quicker and more efficient response to fires while reducing false alarms and malfunctions.

[0120] By applying the present invention to cases where the ceiling of the battery equipment room is high, even in cases where it takes time for the detector to detect a fire, it becomes possible to activate the fire extinguishing system at a relatively earlier stage than the detector is activated.

[0121] The battery equipment room 3 does not have to be in a form in which the battery units 1 are housed in a building. For example, if it is an outdoor cabinet that covers the battery units 1, the process may proceed to the fire extinguishing operation in step 113 without checking with the surveillance camera 8 in step 112. Alternatively, if it is clear that no personnel are present in the battery equipment room, the process may proceed to the fire extinguishing operation in step 113 without checking with the surveillance camera in step 112.

[0122] In addition, even if a fire extinguishing agent such as IG-541 is released into the battery equipment room 3, if the personnel in the room are able to breathe, the fire extinguishing operation may proceed to step 113 without checking with the surveillance camera 8 in step 112.

[0123] If the battery equipment room 3 is an outdoor cabinet covering the battery unit 1, the surveillance camera 8 may be positioned to monitor the cabinet from outside, and the displayed image of the cabinet may be viewed and confirmed by an administrator 35 in the central management room 5.

[0124] The storage battery of the storage battery unit 1 may be a large-volume, large-capacity secondary battery including a lithium-ion battery, and a similar fire extinguishing device, fire extinguishing system, and fire extinguishing method can be applied.

[0125] The present invention is not limited to the above-described embodiment of the invention, but can be embodied in other forms by making appropriate modifications. [Explanation of symbols]

[0126] 1...Battery unit 3…Battery equipment room 5…Central control room 7...Fire extinguishing agent storage and release device (fire extinguishing agent storage and release means) 8. Surveillance camera 9...Temperature sensor (temperature detection means) 11…Battery control panel 13...Automatic closing device 15...Smoke detector (status detection means) 17...Fire extinguishing device control panel (fire extinguishing operation control means) 18...Surveillance monitor 21…Fire extinguishing system 23...Measurement value output device 25...First control unit 27...Charge / discharge control device 29...First signal output device 31…Display equipment 33...Second control section 35…Administrator 36...Second signal output device 37…First sound device 39...First display device 41…Automatic closing section 43...Second sound device 45...Second display device 47…Starting device 49...Fire extinguishing agent storage container 51...Container valve

Claims

1. A fire extinguishing system that detects and extinguishes a fire in a battery equipment room that has a plurality of storage batteries and supplies power to the outside, A temperature detection means for detecting a temperature of the storage battery; A state detection means for detecting a state inside the battery equipment room; A fire extinguishing agent storage and discharge means for discharging a fire extinguishing agent into the battery equipment room; a fire extinguishing operation control means for controlling the extinguishing agent storing and discharging means so as to extinguish a fire in the battery equipment room, based on the temperature detected by the temperature detection means and the state inside the battery equipment room detected by the state detection means; Equipped with the state detection means comprises a smoke detector that detects smoke in the battery equipment room to detect a fire, the temperature detection means comprises a temperature sensor for detecting whether or not the temperature of the storage battery exceeds a predetermined threshold value; the predetermined threshold value includes a first threshold value and a second threshold value that is greater than the first threshold value; only when the temperature sensor detects a value exceeding a second threshold value, the fire extinguishing operation control means controls the fire extinguishing agent storage and discharge means to discharge the fire extinguishing agent into the battery equipment room; The battery storage device further includes a display means, and when the smoke detector does not detect smoke in the battery storage device room and the temperature sensor detects a value exceeding a first threshold value, a predetermined abnormality is displayed on the display means, When the smoke detector detects smoke in the battery equipment room and the temperature sensor detects a value that does not exceed a first threshold value, a first warning message is displayed on the display means, A fire extinguishing system characterized in that when the smoke detector detects smoke in the battery equipment room and the temperature sensor detects a value exceeding a first threshold, a second warning message is displayed on the display means.

2. A fire extinguishing system as described in claim 1, characterized in that the first warning indication comprises a warning indication of smoke generation, and the second warning indication comprises a warning indication of vent gas detection.

3. A method for detecting and extinguishing a fire in a battery equipment room that is equipped with multiple storage batteries and supplies power to the outside, comprising: a temperature detection means for detecting a temperature of the storage batteries; a condition detection means for detecting a condition inside the battery equipment room; a fire extinguishing agent storage and discharge means for discharging a fire extinguishing agent into the battery equipment room; and a fire extinguishing operation control means for controlling the fire extinguishing agent storage and discharge means, detecting a temperature of the storage battery by the temperature detection means; detecting a state in the battery equipment room by the state detection means; a step of controlling, by the fire extinguishing operation control means, the fire extinguishing agent storing and discharging means so as to extinguish the fire in the battery equipment room, based on the temperature detected by the temperature detection means and the state in the battery equipment room detected by the state detection means; having the state detection means comprises a smoke detector which detects smoke in the battery equipment room to detect a fire, the temperature detection means comprises a temperature sensor which detects whether the temperature of the battery exceeds a predetermined threshold value, the predetermined threshold value comprising a first threshold value and a second threshold value which is greater than the first threshold value, and only when the temperature sensor detects a value exceeding the second threshold value, the fire extinguishing operation control means controls so as to release the fire extinguishing agent into the battery equipment room, The fire extinguishing method further comprises a display means, and when the smoke detector is not detecting smoke in the battery equipment room and the temperature sensor detects a value exceeding a first threshold, a predetermined abnormality is displayed on the display means, when the smoke detector is detecting smoke in the battery equipment room and the temperature sensor detects a value that does not exceed the first threshold, a first warning is displayed on the display means, and when the smoke detector is detecting smoke in the battery equipment room and the temperature sensor detects a value exceeding the first threshold, a second warning is displayed on the display means.

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