CN116808477A - Battery compartment fire extinguishing method, system and equipment - Google Patents
Battery compartment fire extinguishing method, system and equipment Download PDFInfo
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- CN116808477A CN116808477A CN202310797274.7A CN202310797274A CN116808477A CN 116808477 A CN116808477 A CN 116808477A CN 202310797274 A CN202310797274 A CN 202310797274A CN 116808477 A CN116808477 A CN 116808477A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 54
- 239000000779 smoke Substances 0.000 claims abstract description 54
- 230000001629 suppression Effects 0.000 claims description 31
- 230000036760 body temperature Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 17
- 239000000443 aerosol Substances 0.000 description 22
- 230000006870 function Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The application provides a method, a system and equipment for extinguishing fire in a battery compartment, and relates to the field of fire protection; the fire extinguishing method for the battery compartment comprises the following steps: acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment; judging an alarm state according to the acquired carbon monoxide concentration, the smoke concentration and the air temperature, wherein the alarm state comprises a primary alarm state and a secondary alarm state; when the alarm state is a primary alarm state, controlling an alarm device to send alarm information; or when the alarm state is a secondary alarm state, controlling the fire extinguishing device to be started, and simultaneously controlling the cabin-level power supply to be powered off; the application carries out early warning, power-off and fire extinguishing treatment on the fire situation of the battery compartment through detection, judgment and execution of the battery compartment, so that dangerous situations are found in advance, and the safety of the battery compartment is protected.
Description
Technical Field
The application relates to the field of fire protection, in particular to a battery compartment fire extinguishing method, system and equipment.
Background
In the related art, a battery compartment fire extinguishing system of a battery energy storage box generally comprises a separate fire-fighting main machine and a fire extinguishing device; firstly, the fire-fighting main engine needs high cost, and the fire-fighting main engine needs to be provided with a power supply as running electric energy for supplying, so that the generated electric charge further increases the maintenance cost; and the fire extinguishing device generally adopts perfluoro-hexanone, but the purchase cost of the perfluoro-hexanone is high, and the fire extinguishing device is not suitable for batch use.
In addition, the fire extinguishing device can also adopt an aerosol fire extinguisher, the traditional aerosol fire extinguisher is generally started by a thermosensitive wire, namely, the thermosensitive wire can conduct fire extinguishing action only when the temperature reaches the set temperature (generally 180 ℃), and when the temperature reaches the set temperature, the battery compartment basically has the condition of burning and igniting, at the moment, the scheme cannot play a role in preventing fire in advance, the safety is low, and the loss of personnel and property caused by the occurrence of the fire is large.
Disclosure of Invention
The application aims to provide a battery compartment fire extinguishing method, a system and equipment, which can reduce the setting of a fire-fighting host computer and save the cost, and the application prejudges the fire in advance, thereby effectively preventing the occurrence and expansion of the fire.
In a first aspect, the present application provides a battery compartment fire suppression method, comprising:
acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment;
judging an alarm state according to the acquired carbon monoxide concentration, the smoke concentration and the air temperature, wherein the alarm state comprises a primary alarm state and a secondary alarm state;
when the alarm state is a primary alarm state, controlling an alarm device to send alarm information; or (b)
When the alarm state is a secondary alarm state, the fire extinguishing device is controlled to be started, and meanwhile, the cabin-level power supply is controlled to be powered off.
In an alternative embodiment, the alarm state is the primary alarm state when the carbon monoxide concentration is greater than or equal to a first carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a first smoke concentration preset value, and the air temperature is greater than or equal to a first air temperature preset value.
In an alternative embodiment, the alarm state is a secondary alarm state when the carbon monoxide concentration is greater than or equal to a second carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a second smoke concentration preset value, and the air temperature is greater than or equal to a second air temperature preset value.
In an alternative embodiment, the alarm state is a secondary alarm state when the carbon monoxide concentration is greater than or equal to a second carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a second smoke concentration preset value, the air temperature is greater than a third air temperature preset value, and the temperature change of the air temperature satisfies 1 ℃/s.
In an alternative embodiment, the battery compartment fire suppression method further comprises:
acquiring the body temperature of the battery compartment;
judging whether the acquired body temperature is greater than or equal to a preset temperature value;
if yes, the fire extinguishing device is controlled to be started, and meanwhile, the cabin-level power supply is controlled to be powered off.
In an alternative embodiment, the fire extinguishing method of the battery compartment further comprises:
triggering the fire extinguishing device start command, wherein the triggering the fire extinguishing device start command comprises:
acquiring the time of pressing the start button;
judging whether the time for pressing the starting button is larger than a preset time threshold;
if yes, the fire extinguishing device is started.
In an alternative embodiment, the triggering the fire extinguishing device activation instruction further includes:
if the time for pressing the starting button is within the preset time threshold, when the starting button is pressed again, the timing is cleared, and the fire extinguishing device is not started.
In a second aspect, the present application provides a battery compartment fire suppression system comprising:
the first acquisition module is used for acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment;
the first judging module is used for judging an alarm state according to the acquired carbon monoxide concentration, the smoke concentration and the air temperature;
and the control module is used for controlling the alarm device to send alarm information and/or controlling the cabin-level power supply to be powered off and controlling the fire extinguishing device to be started according to the judgment result of the first judgment module.
In an alternative embodiment, the battery compartment fire suppression method further comprises:
the second acquisition module is used for acquiring the body temperature of the battery compartment;
the second judging module is used for judging whether the acquired body temperature is greater than or equal to a preset temperature value or not, and controlling the fire extinguishing device to be started according to a judging result.
In a third aspect, the present application provides a battery compartment fire extinguishing apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the battery compartment fire extinguishing method according to the previous embodiment when executing the computer program.
Compared with the prior art, the application has the beneficial effects that:
the application provides a battery compartment fire extinguishing method, which comprises the steps of obtaining carbon monoxide concentration, smoke concentration and air temperature in a battery compartment; judging an alarm state according to the acquired carbon monoxide concentration, smoke concentration and air temperature, and controlling an alarm device to send alarm information when the alarm state is a primary alarm state; when the alarm state is a secondary alarm state, the control cabin level power supply is powered off, and the fire extinguishing device is controlled to be started, so that the fire disaster condition of the battery cabin is subjected to early warning, power off and fire extinguishing treatment, dangerous situations are found in advance, and the safety of the battery cabin is protected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a floor plan of a battery compartment fire suppression system of some embodiments;
FIG. 2 illustrates a connection schematic of some embodiments of battery compartment fire suppression systems;
FIG. 3 shows a schematic diagram I of a battery compartment fire suppression method according to an embodiment I;
FIG. 4 shows a schematic diagram II of a second battery compartment fire suppression method of an embodiment;
FIG. 5 shows a schematic diagram III of a third embodiment and a fourth embodiment battery compartment fire suppression method;
fig. 6 shows a connection schematic diagram of a five-cell tank according to an embodiment.
Description of main reference numerals:
100-battery compartment; 110-battery clusters; 120-battery pack; 200-battery management system; 300-battery compartment fire suppression system; 310-detector; 320-BMS controller; 330 an alarm device; 331-an alarm; 340-aerosol fire extinguisher; 350-thermosensitive wire; 360-start button; 400-energy management system.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Example 1
Referring to fig. 1, 2 and 3, the battery storage tank includes a battery compartment 100, a battery management system 200 and a battery compartment fire suppression system 300; because the battery energy storage box is concentrated in a special box body, namely, the battery management system 200 and the battery compartment fire extinguishing system 300 are both positioned in the battery compartment 100, the battery compartment 100 has the characteristics of heat insulation, constant temperature, fire protection, fire resistance, sand prevention and the like, and meanwhile, due to the sealing property of the battery compartment 100, the conductivity of the battery compartment 100 and the temperature rise caused by the operation of the battery compartment 100, the battery compartment 100 is extremely easy to generate fire situations, even safety accidents such as explosion and the like caused by the fire.
The battery compartment 100 is formed by connecting a plurality of battery clusters 110 in parallel to the same direct current busbar; the battery cluster 110 is formed by connecting a plurality of battery packs 120 in series; it can be appreciated that the battery packs 120 within the battery cluster 110 are concentrated in regions, and thus, the heat of the operation of the battery packs 120 is concentrated, and the heat dissipation is poor.
The battery management system 200 (Battery Management System, BMS for short) is commonly called a battery nurse or battery manager, and mainly aims at detection, evaluation, protection and balance detection of the battery compartment 100; the battery management system 200 is electrically connected to each battery cluster 110, thereby performing intelligent management and maintenance on each battery cluster 110, preventing the battery compartment 100 from being overcharged or overdischarged, prolonging the service life of the battery compartment 100, and monitoring the state of the battery compartment 100.
The electrical connection in this embodiment is a wire harness connection, and may specifically adopt a communication interface such as RS-485, where RS (all Recommended Standard) is a recommended standard, and the RS-485 communication interface is approved by the electronic industry association (Electronics Industries Association EIA) as a communication interface standard, so that the RS-485 communication interface has a better communication effect, and improves accuracy and timeliness of signal transmission.
To solve the problem of fire early warning in the battery compartment 100, the embodiment of the application provides a fire extinguishing method for the battery compartment 100 based on the battery compartment fire extinguishing system 300, which comprises the following steps:
s100, acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment 100.
The battery compartment fire suppression system 300 includes a detector 310; in this embodiment, the detector 310 includes a carbon monoxide concentration detection module, a smoke detection module, and a temperature detection module; wherein, the carbon monoxide concentration detection module is used for detecting the carbon monoxide concentration in the battery compartment 100; the smoke detection module is used for detecting the smoke concentration in the battery compartment 100; the temperature detection module is used for detecting the air temperature in the battery compartment 100 and calculating the change of the air temperature in unit time; since the detector 310 of the present embodiment can detect multiple dimensions, the detector 310 adopts the composite detector 310 to save the number of the detectors 310 and reduce the cost.
In practical application, in order to ensure accuracy and timeliness of the detection result, in this embodiment, a detector 310 is respectively disposed in each battery compartment 100, so as to perform omnibearing real-time monitoring on each portion of the battery compartment 100.
In some other embodiments, the detector 310 is a plurality of different functional detection devices, each comprising only a single detection function, specifically a carbon monoxide detection device, a smoke detection device, and a temperature detection device; the carbon monoxide concentration, the smoke concentration and the air temperature are detected and sent more sensitively through the detection devices with different functions.
In some other embodiments, the air temperature may include only an absolute value of the air temperature; or the air temperature may include only a relative value of the air temperature (i.e., a change value per unit time).
It will be appreciated that the detector 310 may be adapted to acquire the carbon monoxide concentration, smoke concentration and air temperature in real time during the acquisition of the carbon monoxide concentration, smoke concentration and air temperature, or may be adapted to acquire the carbon monoxide concentration, smoke concentration and air temperature periodically, such as once in 1 to 8 seconds and once in 16 to 24 seconds. Of course, the time of the interval can be adjusted according to design requirements.
S200, judging alarm states according to the acquired carbon monoxide concentration, smoke concentration and air temperature, wherein the alarm states comprise a primary alarm state and a secondary alarm state.
The battery compartment fire suppression system 300 further includes a BMS controller 320, and the BMS controller 320 is part of the battery management system 200 and is logically programmed to determine whether an alarm state is a primary alarm state or a secondary alarm state according to a carbon monoxide concentration, a smoke concentration, and an air temperature, so that the use of the BMS controller 320 reduces costs for setting a separate fire fighting host and additional costs generated by the fire fighting host as compared to the related art.
The BMS controller 320 is electrically connected to the battery compartment 100 and the detector 310, respectively.
Specifically, the BMS controller 320 is electrically connected to the battery compartment 100 to connect or disconnect a compartment-level power supply within the battery compartment 100.
In addition, the BMS controller 320 is electrically connected to the detector 310, and the BMS controller 320 controls the battery compartment 100 to supply power to the detector 310 so that the detector 310 maintains normal operation, on the one hand, and the detector 310 transmits a carbon monoxide concentration value signal, a smoke concentration value signal, and a temperature value signal to the BMS controller 320, on the other hand.
First, when the carbon monoxide concentration is less than the first carbon monoxide concentration preset value, the smoke concentration is less than the first smoke concentration preset value, and the air temperature is less than the first air temperature preset value, the battery compartment 100 is in an alarm-free state, which indicates that the battery compartment 100 is operating normally and no fire occurs.
When the carbon monoxide concentration is greater than or equal to the first carbon monoxide concentration preset value, the smoke concentration is greater than or equal to the first smoke concentration preset value, and the air temperature is greater than or equal to the first air temperature preset value, the alarm state is a primary alarm state, which indicates that the battery compartment 100 has reached the fire prevention standard and a fire may occur.
When the carbon monoxide concentration is greater than or equal to the second carbon monoxide concentration preset value, the smoke concentration is greater than or equal to the second smoke concentration preset value, and the air temperature is greater than or equal to the second air temperature preset value, the alarm state is a secondary alarm state, and the situation is critical, wherein the fire disaster of the battery compartment 100 is indicated.
Or when the carbon monoxide concentration is larger than or equal to the second carbon monoxide concentration preset value, the smoke concentration is larger than or equal to the second smoke concentration preset value and the air temperature is larger than the third air temperature preset value, and meanwhile, the temperature change of the air temperature meets 1 ℃/s, the alarm state is a secondary alarm state.
For convenience of description and understanding, the following exemplary descriptions are given for each preset value, and the present embodiment is not limited thereto, when each preset value may be another value.
Primary alarm state: the first carbon monoxide concentration preset value is 190ppm, the first smoke concentration preset value is 0.15dB/m, and the first air temperature preset value is 60 ℃.
Second-level alarm state one: the second carbon monoxide concentration preset value is 600ppm, the second smoke concentration preset value is 0.55dB/m, and the second air temperature preset value is 85 ℃;
second-level alarm state two: the second carbon monoxide concentration preset value is 600ppm, the second smoke concentration preset value is 0.55dB/m, and the third air temperature preset value is 55 ℃.
For example: when the carbon monoxide concentration is 200ppm, the smoke concentration is 0.3dB/m, and the air temperature is 80 c, the BMS controller 320 determines a primary alarm state.
When the carbon monoxide concentration is 700ppm, the smoke concentration is 0.6dB/m, and the air temperature is 90 deg.c under the condition that the primary alarm state is maintained, the BMS controller 320 determines the secondary alarm state.
When the carbon monoxide concentration is 700ppm, the smoke concentration is 0.6dB/m, the air temperature is 60 c, and the air temperature is changed to 1 c/s under the condition that the primary alarm state is maintained, the BMS controller 320 determines the secondary alarm state.
S300, when the alarm state is the primary alarm state, the alarm device 330 is controlled to send alarm information.
The battery compartment fire suppression system 300 also includes an alarm 330; the alarm device 330 includes a display panel and an alarm 331;
the display panel is electrically connected to the BMS controller 320, and on the one hand, the BMS controller 320 controls the battery compartment 100 to supply power to the display panel to maintain the normal operation of the display panel, and on the other hand, the BMS controller 320 controls the display panel to transmit alarm information, which is the display content of the display panel, including but not limited to a carbon monoxide concentration value, a smoke concentration value, a temperature value, and an alarm-free state or a primary alarm state or a secondary alarm state, etc.
When in actual use, the embodiment carries out special treatment such as font amplification and flickering on the display content of the primary alarm state or the secondary alarm state in order to improve the identification degree and thus embody the critical condition of fire.
The alarm 331 is electrically connected to the BMS controller 320, and on the one hand, the BMS controller 320 controls the battery compartment 100 to supply power to the alarm 331 so as to maintain the normal operation of the alarm 331, and on the other hand, the BMS controller 320 controls the alarm 331 to send alarm information, such as a glaring and flashing light or a sharp sound, i.e. the alarm 331 may employ a device having a warning effect, such as an audible and visual alarm 331 or a buzzer or a flash lamp.
It will be appreciated that the alarm device 330 should be located in a position that is convenient for inspection and viewing by an operator, for example, the alarm 331 should be located at a high place and not be blocked by other equipment.
S400, when the alarm state is a secondary alarm state, the fire extinguishing device is controlled to be started, and meanwhile, the cabin-level power supply is controlled to be powered off.
The battery compartment fire suppression system 300 also includes a fire suppression device employing an aerosol fire extinguisher 340.
The aerosol fire extinguisher 340 is electrically connected with the BMS controller 320; in one aspect, the opening of the aerosol fire extinguisher 340 is controlled by the BMS controller 320; on the other hand, the pressure switch of the aerosol fire extinguisher 340 transmits a feedback signal to the BMS controller 320, thereby causing the BMS controller 320 to determine whether the aerosol fire extinguisher 340 has extinguished a fire.
Because the BMS controller 320 is electrically connected with the battery compartment 100, when the alarm state is a secondary alarm, the BMS controller 320 judges that a fire situation occurs at this time, and the BMS controller 320 cuts off the compartment-level power to prevent the compartment-level power from being exploded under the influence of the fire in the energized state.
It will be appreciated that in a fire scene, the concentration of carbon monoxide, the concentration of smoke and the air temperature are all gradually increased, so that the triggering condition of the secondary alarm is based on the triggering condition of the primary alarm, the secondary alarm state is based on the primary alarm state, that is, the execution action of the primary alarm is continuously executed in the secondary alarm state, and the BMS controller 320 still controls the alarm device 330 to send alarm information, and at this time, the display panel displays the secondary alarm information, and the alarm 331 alarms.
Example two
Scene one: when the breakage of the probe 310 fails or the electrical connection between the probe 310 and the BMS controller 320 is blocked, the BMS controller 320 fails to receive the alarm signal in time.
Scene II: the detector 310 operates normally, but the various detection values have not reached the trigger condition for the BMS controller 320 to determine a primary alarm state or a secondary alarm state.
Referring to fig. 1, 2 and 4, according to the first and second scenarios, the present embodiment further provides a fire extinguishing method for the battery compartment 100 based on the first embodiment, so as to further improve the fire early warning and processing capability of the battery compartment 100; the battery compartment 100 fire extinguishing method further includes:
s110, acquiring the body temperature of the battery compartment 100.
The battery compartment fire extinguishing system 300 further includes a thermosensitive wire 350, where the thermosensitive wire 350 is wound around the periphery of the battery compartment 100 to obtain the body temperature of the battery compartment 100, and since there is physical contact between the thermosensitive wire 350 and the battery compartment 100, the thermosensitive wire 350 can closely monitor the temperature and the temperature variation of the battery compartment 100, so as to improve the reaction speed and the reaction capability of the embodiment.
S210, judging whether the acquired body temperature is greater than or equal to a preset temperature value.
The temperature sensitive line 350 is a temperature sensor that detects a change in the temperature of the surrounding environment and triggers an alarm when the temperature exceeds a preset temperature value.
In practical use, the thermosensitive wire 350 includes a plurality of thermosensitive wire 350 types with preset temperature values of 90 ℃, 120 ℃, 150 ℃, 180 ℃, 220 ℃ and the like. For example, when the preset temperature value is selected to be 220 ℃, the first air temperature preset value, the second air temperature preset value, and the third air temperature preset value of the detector 310 are all lower than the preset temperature value of the thermosensitive line 350, so that the detector 310 detects a fire prior to the thermosensitive line 350, and the thermosensitive line 350 functions as an alternative, that is, only in the case of scene one; at this time, if the obtained body temperature is 230 ℃, the body temperature is judged to be larger than a preset temperature value.
S310, if yes, controlling the fire extinguishing device to be started, and simultaneously controlling the cabin-level power supply to be powered off.
The thermosensitive line 350 is connected with the aerosol fire extinguisher 340, and when the obtained body temperature is judged to be greater than or equal to a preset temperature value, the thermosensitive line 350 controls the aerosol fire extinguisher 340 to be opened, so that fire extinguishing work is performed.
In addition, the aerosol fire extinguisher 340 is provided with a pressure sensor, and the pressure sensor is electrically connected with the BMS controller 320, so that after the aerosol fire extinguisher 340 is opened, the pressure sensor sends a signal to the BMS controller 320, the BMS controller 320 judges that the aerosol fire extinguisher is in a secondary alarm state, namely, the BMS controller 320 controls the display panel to display the secondary alarm state, the alarm 331 alarms, and meanwhile, the cabin-level power supply is controlled to be powered off.
Example III
Referring to fig. 1, 2 and 5, when the detector 310 and the thermosensitive wire 350 do not automatically extinguish the fire due to a fault or insensitivity, the user finds that the fire is manually controlled to extinguish the fire.
The embodiment also provides a fire extinguishing method for the battery compartment 100 based on the first embodiment and the second embodiment, so as to further improve the fire early warning and processing capacity of the battery compartment 100; the battery compartment 100 fire extinguishing method further includes:
s120, triggering a fire extinguishing device starting instruction, wherein the triggering the fire extinguishing device starting instruction comprises:
s121, acquiring time for pressing a start button 360;
s122, judging whether the time for pressing the start button 360 is greater than a preset time threshold;
s123, if yes, the fire extinguishing device is started.
The battery compartment fire suppression system 300 further comprises a start button 360, wherein the start button 360 is connected with the aerosol fire extinguisher 340, i.e. the start button 360 directly controls the aerosol fire extinguisher 340 to perform fire extinguishing actions.
Specifically, a time delay solenoid valve is arranged between the start button 360 and the aerosol fire extinguisher 340; the time delay solenoid valve remains de-energized within 0-T seconds of the start button 360 being depressed; after T seconds of pressing the start button 360, the time delay solenoid valve is energized; wherein T is a preset time threshold.
For example: when t=30, the delay solenoid valve remains de-energized within 0-30 seconds of pressing the start button 360, and the aerosol fire extinguisher 340 is temporarily not started; after 30 seconds of pressing the start button 360, the time delay solenoid valve is energized and the aerosol fire extinguisher 340 is started.
In addition, the pressure sensor sends a signal to the BMS controller 320, and the BMS controller 320 judges that the BMS controller 320 is in a secondary alarm state, namely, the BMS controller 320 controls the display panel to display the secondary alarm state, the alarm 331 alarms, and meanwhile, the cabin-level power supply is controlled to be powered off.
It should be noted that, to facilitate the pressing by the operator and ensure the safety of the operator, the start button 360 is disposed outside the battery compartment 100.
In summary, because of the specificity of the battery compartment 100, a fire disaster will cause a large explosion accident to occur in the battery compartment 100 and around the battery compartment 100, and the embodiment uses electric start, hot start and manual start as three safety schemes for fire disaster prevention, so that the degree of fire disaster prevention is greatly improved, the fire extinguishing speed is accelerated, the personnel safety is ensured in the maximum extent, and the embodiment has good implementation significance.
Example IV
Referring to fig. 1, 2 and 5, in the third embodiment, the problem that a user wants to stop starting the fire extinguishing device at any time is solved by manually finding a fire and performing fire extinguishing by pressing the start button 360, and based on the third embodiment, the trigger fire extinguishing device starting instruction further includes:
s124, if the time of pressing the start button 360 is within a preset time threshold, when the start button 360 is pressed again, the timing is cleared, and the fire extinguishing device is not started.
In 0-T seconds of pressing the start button 360, the start button 360 is pressed again, and the time delay solenoid valve stops timing and clears.
For example: in 0-30 seconds of pressing the start button 360, the start button 360 is pressed again, the time delay solenoid valve stops timing and clears, and the aerosol fire extinguisher 340 is not started.
Example five
Referring to fig. 6, the battery energy storage box further includes an energy management system 400 (Energy Management System, EMS for short); the capacity management system is located within the battery compartment 100; the energy management system 400 is mainly used for controlling energy in the micro-grid, maintaining the power balance of the micro-grid and ensuring the normal operation of the micro-grid.
The energy management system 400 is electrically connected to the battery management system 200, that is, the battery management system 200 transmits an early warning signal to the energy management system 400, and the energy management system 400 controls and manages the micro-grid of the battery compartment 100, thereby preventing the expansion of the fire accident of the battery compartment 100.
Example six
Referring to fig. 1 and 2, in accordance with the above embodiments, a battery compartment fire suppression system 300 is provided, which includes: the first acquisition module is used for acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment 100; the first judging module is used for judging an alarm state according to the acquired carbon monoxide concentration, smoke concentration and air temperature; the control module is used for controlling the alarm device 330 to send alarm information and/or controlling the cabin-level power supply to be powered off and controlling the fire extinguishing device to be started according to the judgment result of the first judgment module.
It will be appreciated that the first acquisition module is a detector 310; the first judgment module and the control module are integrated into one body, specifically, the BMS controller 320.
When the BMS controller 320 determines the primary alarm state, the BMS controller 320 controls the alarm device 330 to transmit alarm information.
When the BMS controller 320 determines the secondary alarm state, the BMS controller 320 controls the alarm device 330 to transmit alarm information and controls the cabin-level power to be off and controls the fire extinguishing device to be turned on.
Further, the present embodiment further includes: the second acquisition module is used for acquiring the body temperature of the battery compartment 100; and the second judging module is used for judging whether the acquired body temperature is greater than or equal to a preset temperature value and controlling the fire extinguisher to be opened according to the judging result.
It can be appreciated that the second acquisition module and the second determination module are integrated, specifically, the thermosensitive wire 350; the fire extinguishing device is an aerosol fire extinguisher 340.
After the aerosol fire extinguisher 340 is opened, the pressure sensor sends a signal to the BMS controller 320, and the BMS controller 320 judges that the aerosol fire extinguisher is in a secondary alarm state, namely, the BMS controller 320 controls the display panel to display the secondary alarm state, the alarm 331 alarms, and meanwhile, the cabin-level power supply is controlled to be powered off.
Example seven
The present embodiment provides a battery compartment fire extinguishing apparatus including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the battery compartment fire extinguishing method in any of the above-described first to fifth embodiments when executing the computer program.
For example, a computer program may be divided into one or more modules/units, which are stored in a memory and executed by a processor to accomplish the present embodiments. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of a computer program in a battery compartment fire suppression apparatus.
The memory, the processor and the computer program stored in the memory and capable of running on the processor are all located in the battery management system, so that the setting of a fire-fighting host is reduced, and the functions of early warning, power failure and fire extinguishment are realized by programming the battery management system and utilizing logic operation.
Example eight
The present embodiment provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the fire extinguishing method for the battery compartment in any of the above-described first to fifth embodiments.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or a part of the technical solution may be embodied in the form of a software product, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, including several instructions to make the computer program execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A method of extinguishing a battery compartment comprising:
acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment;
judging an alarm state according to the acquired carbon monoxide concentration, the smoke concentration and the air temperature, wherein the alarm state comprises a primary alarm state and a secondary alarm state;
when the alarm state is a primary alarm state, controlling an alarm device to send alarm information; or (b)
When the alarm state is a secondary alarm state, the fire extinguishing device is controlled to be started, and meanwhile, the cabin-level power supply is controlled to be powered off.
2. The battery compartment fire suppression method of claim 1, wherein the alarm state is the primary alarm state when the carbon monoxide concentration is greater than or equal to a first carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a first smoke concentration preset value, and the air temperature is greater than or equal to a first air temperature preset value.
3. The battery compartment fire suppression method of claim 1, wherein the alarm state is a secondary alarm state when the carbon monoxide concentration is greater than or equal to a second carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a second smoke concentration preset value, and the air temperature is greater than or equal to a second air temperature preset value.
4. The battery compartment fire suppression method of claim 1, wherein the alarm state is a secondary alarm state when the carbon monoxide concentration is greater than or equal to a second carbon monoxide concentration preset value, the smoke concentration is greater than or equal to a second smoke concentration preset value, the air temperature is greater than a third air temperature preset value, and the temperature change of the air temperature satisfies 1 ℃/s.
5. The battery compartment fire suppression method of claim 1, further comprising:
acquiring the body temperature of the battery compartment;
judging whether the acquired body temperature is greater than or equal to a preset temperature value;
if yes, the fire extinguishing device is controlled to be started, and meanwhile, the cabin-level power supply is controlled to be powered off.
6. The battery compartment fire suppression method of claim 1, wherein the battery compartment fire suppression method further comprises:
triggering the fire extinguishing device start command, wherein the triggering the fire extinguishing device start command comprises:
acquiring the time of pressing the start button;
judging whether the time for pressing the starting button is larger than a preset time threshold;
if yes, the fire extinguishing device is started.
7. The battery compartment fire suppression method of claim 6, wherein the triggering the fire suppression apparatus activation instruction further comprises:
if the time for pressing the starting button is within the preset time threshold, when the starting button is pressed again, the timing is cleared, and the fire extinguishing device is not started.
8. A battery compartment fire suppression system, comprising:
the first acquisition module is used for acquiring the carbon monoxide concentration, the smoke concentration and the air temperature in the battery compartment;
the first judging module is used for judging an alarm state according to the acquired carbon monoxide concentration, the smoke concentration and the air temperature;
and the control module is used for controlling the alarm device to send alarm information and/or controlling the cabin-level power supply to be powered off and controlling the fire extinguishing device to be started according to the judgment result of the first judgment module.
9. The battery compartment fire suppression system of claim 8, further comprising:
the second acquisition module is used for acquiring the body temperature of the battery compartment;
the second judging module is used for judging whether the acquired body temperature is greater than or equal to a preset temperature value or not, and controlling the fire extinguishing device to be started according to a judging result.
10. Battery compartment fire suppression apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the battery compartment fire suppression method according to any one of claims 1 to 7 when executing the computer program.
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| CN202310797274.7A CN116808477A (en) | 2023-06-29 | 2023-06-29 | Battery compartment fire extinguishing method, system and equipment |
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| CN202310797274.7A CN116808477A (en) | 2023-06-29 | 2023-06-29 | Battery compartment fire extinguishing method, system and equipment |
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Application publication date: 20230929 |