CN116808477A - Battery compartment fire extinguishing methods, systems and equipment - Google Patents

Abstract

This application provides a battery cabin fire extinguishing method, system and equipment, relating to the field of fire protection; wherein the battery cabin fire extinguishing method includes: obtaining the carbon monoxide concentration, smoke concentration and air temperature in the battery cabin; according to the obtained carbon monoxide concentration, the The smoke concentration and the air temperature determine the alarm state, and the alarm state includes a first-level alarm state and a second-level alarm state; when the alarm state is the first-level alarm state, the alarm device is controlled to send alarm information; or when the alarm state When the state is in the secondary alarm state, the fire extinguishing device is controlled to be turned on, and the cabin power supply is controlled to be powered off at the same time. This application detects, judges and executes the battery cabin to provide early warning, power outage and fire extinguishing for the fire situation in the battery cabin. Discover dangers in advance and protect the safety of the battery compartment.

Description

Battery compartment fire extinguishing methods, systems and equipment

Technical field

The present application relates to the field of fire protection, specifically, to a battery cabin fire extinguishing method, system and equipment.

Background technique

In related technologies, the battery compartment fire extinguishing system of the battery energy storage box generally includes a separate fire host and a fire extinguishing device; first of all, the installation of the fire host requires high costs, and the fire host needs to be equipped with a power supply as an operating power supply, thus generating electricity bills. This further increases the maintenance cost; secondly, fire extinguishing devices generally use perfluorohexanone, and the purchase cost of perfluorohexanone is high and is not suitable for batch use.

In addition, the fire extinguishing device can also use aerosol fire extinguishers, and the traditional aerosol fire extinguisher is generally activated by a thermal line. That is, the aerosol fire extinguisher can only operate when the temperature of the thermal line reaches the set temperature (usually 180°C). Fire extinguishing action, and when the set temperature is reached, the battery compartment has basically burned and caught fire. At this time, this solution cannot prevent fires in advance, has low safety, and the occurrence of fires will cause great losses to people and property. .

Contents of the invention

The purpose of this application is to provide battery cabin fire extinguishing methods, systems and equipment, which can reduce the installation of fire hosts and save costs. This application can predict fires in advance and effectively prevent the occurrence and expansion of fires.

In a first aspect, the present invention provides a battery cabin fire extinguishing method, including:

Obtain the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment;

Determine the alarm status according to the obtained carbon monoxide concentration, the smoke concentration and the air temperature, and the alarm status includes a first-level alarm status and a second-level alarm status;

When the alarm state is a first-level alarm state, control the alarm device to send alarm information; or

When the alarm state is a secondary alarm state, the fire extinguishing device is controlled to be turned on, and the cabin level power supply is controlled to be powered off.

In an optional embodiment, 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 When the value is preset, the alarm state is the first-level alarm state.

In an optional embodiment, 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 At the preset value, the alarm state is a secondary alarm state.

In an optional embodiment, 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 the third air temperature preset value, value, and when the temperature change of the air temperature meets 1°C/s, the alarm state is a secondary alarm state.

In an optional embodiment, the battery compartment fire extinguishing method also includes:

Obtain the body temperature of the battery compartment;

Determine whether the obtained body temperature is greater than or equal to a preset temperature value;

If so, the fire extinguishing device is controlled to be turned on, and the cabin power supply is controlled to be powered off.

In an optional embodiment, the battery compartment fire extinguishing method further includes:

Triggering the start instruction of the fire extinguishing device, the triggering the start instruction of the fire extinguishing device includes:

Get the time when the start button is pressed;

Determine whether the time for pressing the start button is greater than a preset time threshold;

If so, the fire extinguishing device is turned on.

In an optional implementation, the triggering of the fire extinguishing device starting instruction further includes:

If the time for pressing the start button is within the preset time threshold, when the start button is pressed again, the timer will be cleared and the fire extinguishing device will not be turned on.

In a second aspect, the present invention provides a battery cabin fire extinguishing system, including:

The first acquisition module is used to acquire the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment;

The first judgment module is used to judge the alarm status according to the obtained carbon monoxide concentration, the smoke concentration and the air temperature;

A control module, configured to control the alarm device to send alarm information and/or control the cabin power supply to be cut off and the fire extinguishing device to be turned on based on the judgment result of the first judgment module.

In an optional implementation, the battery compartment fire extinguishing method also includes:

a second acquisition module, used to acquire the body temperature of the battery compartment;

The second judgment module is used to judge whether the obtained body temperature is greater than or equal to the preset temperature value, and to control the opening of the fire extinguishing device according to the judgment result.

In a third aspect, the present invention provides a battery compartment fire extinguishing equipment, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, The battery compartment fire extinguishing method is as described in the previous embodiment.

Compared with the existing technology, the beneficial effects of this application are:

This application proposes a battery cabin fire extinguishing method to obtain the carbon monoxide concentration, smoke concentration and air temperature in the battery cabin; determine the alarm status based on the obtained carbon monoxide concentration, smoke concentration and air temperature. When the alarm status is the first-level alarm status, control The alarm device sends an alarm message; when the alarm status is a secondary alarm status, the cabin level power supply is controlled to cut off, and the fire extinguishing device is controlled to turn on, so as to provide early warning, power outage and fire extinguishing for the fire situation in the battery compartment, detect danger in advance, and protect Battery Compartment Safety.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 shows the site layout of the battery compartment fire extinguishing system of some embodiments;

Figure 2 shows a connection schematic diagram of the battery compartment fire extinguishing system of some embodiments;

Figure 3 shows a schematic diagram of the battery compartment fire extinguishing method in Embodiment 1;

Figure 4 shows a schematic diagram 2 of the battery compartment fire extinguishing method in Embodiment 2;

Figure 5 shows a schematic diagram 3 of the battery compartment fire extinguishing method in Embodiment 3 and Embodiment 4;

Figure 6 shows the connection principle diagram of the battery energy storage box of the fifth embodiment.

Description of main component symbols:

100-battery cabin; 110-battery cluster; 120-battery pack; 200-battery management system; 300-battery cabin fire extinguishing system; 310-detector; 320-BMS controller; 330-alarm device; 331-alarm; 340 -Aerosol fire extinguisher; 350-thermal wire; 360-start button; 400-energy management system.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the application.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In this application, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

Embodiment 1

Please refer to Figure 1, Figure 2 and Figure 3. The battery energy storage box includes a battery cabin 100, a battery management system 200 and a battery cabin fire extinguishing system 300; since the battery energy storage box is concentrated in a special box, the battery management system 200 and The battery cabin fire extinguishing system 300 is located in the battery cabin 100, so the battery cabin 100 has the characteristics of heat insulation, constant temperature, fire retardant, wind and sand prevention, etc. At the same time, due to the closed nature of the battery cabin 100, the conductivity of the battery cabin 100, and the battery cabin 100 The temperature rise caused by the operation of the battery compartment 100 is extremely prone to fire, and even safety accidents such as explosion due to fire.

Among them, the battery compartment 100 is formed by multiple battery clusters 110 connected in parallel to the same DC bus; the battery cluster 110 is formed by multiple battery packs 120 connected in series; it can be understood that the battery packs 120 in the battery cluster 110 are concentrated in different areas. Therefore, the heat generated by the operation of the battery pack 120 is concentrated and the heat dissipation performance is poor.

The battery management system 200 (Battery Management System, referred to as BMS), commonly known as the battery nanny or battery steward, is mainly aimed at the detection, evaluation, protection and balancing detection of the battery compartment 100; the battery management system 200 is electrically connected to each battery cluster 110, thereby controlling each battery. The cluster 110 performs intelligent management and maintenance to prevent overcharging or over-discharging of the battery compartment 100, extend the service life of the battery compartment 100, and monitor the status of the battery compartment 100.

The "electrical connection" referred to in this embodiment is a wire harness connection. Specifically, communication interfaces such as RS-485 can be used. RS (full name: Recommended Standard) means a recommended standard. The RS-485 communication interface is recommended by the Electronics Industries Association. Association EIA) approved as a communication interface standard. Therefore, the use of RS-485 has better communication effects and improves the accuracy and timeliness of signal transmission.

In order to solve the fire warning problem of the battery cabin 100, embodiments of the present application provide a fire extinguishing method for the battery cabin 100 based on the battery cabin fire extinguishing system 300, including:

S100. Obtain the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment 100.

The battery cabin fire extinguishing 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 to detect the carbon monoxide concentration in the battery cabin 100; the smoke detection module The detection module is used to detect the smoke concentration in the battery compartment 100; the temperature detection module is used to detect the air temperature in the battery compartment 100 and calculate the change in air temperature per unit time; since the detector 310 of this embodiment can detect multiple dimensions, Therefore, the detector 310 uses a composite detector 310 to save the number of detectors 310 and reduce costs.

In actual application, in order to ensure the accuracy and timeliness of the detection results, this embodiment provides a detector 310 in each battery compartment 100 to perform all-round real-time monitoring of each part of the battery compartment 100 .

In some other embodiments, the detector 310 is a plurality of detection devices with different functions, each detection device only includes a single detection function, specifically a carbon monoxide detection device, a smoke detection device and a temperature detection device; through detection devices with different functions More sensitive detection and transmission of carbon monoxide concentration, smoke concentration and air temperature.

In some other embodiments, the air temperature may only include the absolute value of the air temperature; or the air temperature may only include the relative value of the air temperature (ie, the change value per unit time).

It can be understood that in the process of obtaining the carbon monoxide concentration, smoke concentration, and air temperature, the detector 310 can obtain the carbon monoxide concentration, the smoke concentration, and the air temperature in real time, or it can also obtain the carbon monoxide concentration, the smoke concentration, and the air temperature periodically. , such as once within 1 to 8 seconds, once within 16 to 24 seconds. Of course, the interval time can be adjusted according to design needs.

S200. Determine the alarm status based on the obtained carbon monoxide concentration, smoke concentration and air temperature. The alarm status includes the first-level alarm status and the second-level alarm status.

The battery cabin fire extinguishing system 300 also includes a BMS controller 320. The BMS controller 320 is part of the battery management system 200 and is programmed to perform logic settings to determine whether the alarm status is a first-level alarm status or based on carbon monoxide concentration, smoke concentration, and air temperature. Secondary alarm state. Therefore, compared with related technologies, using the BMS controller 320 reduces the cost of setting up a separate fire host and the additional costs incurred by the fire host.

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 cut off the compartment power supply in the battery compartment 100 .

In addition, the BMS controller 320 is also electrically connected to the detector 310. On the one hand, the BMS controller 320 controls the battery compartment 100 to provide power to the detector 310 so that the detector 310 maintains normal operation. On the other hand, the detector 310 controls the BMS. The detector 320 sends a carbon monoxide concentration value signal, a smoke concentration value signal and a temperature value signal.

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 cabin 100 is in a non-alarm state, indicating that the battery cabin 100 is running Normal, no fire occurred.

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 first-level alarm state, indicating that The battery compartment 100 has reached fire prevention standards 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, indicating that A fire has broken out in the battery compartment 100 and the situation is critical.

Or 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, the air temperature is greater than the third air temperature preset value, and at the same time, the temperature change of the air temperature satisfies 1°C/ s, the alarm state is the second level alarm state.

To facilitate description and understanding, this embodiment provides the following exemplary description of each preset value. When each preset value can also be other numerical values, this embodiment does not limit this.

Level 1 alarm state: The first preset value of carbon monoxide concentration is 190ppm, the first preset value of smoke concentration is 0.15dB/m, and the first preset value of air temperature is 60℃.

Secondary alarm state one: the second preset value of carbon monoxide concentration is 600ppm, the second preset value of smoke concentration is 0.55dB/m, and the second preset value of air temperature is 85℃;

Secondary alarm state two: the second preset value of carbon monoxide concentration is 600ppm, the second preset value of smoke concentration is 0.55dB/m, and the third preset value of air temperature 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 that it is a first-level alarm state.

When maintaining the first-level alarm state, the carbon monoxide concentration is 700ppm, the smoke concentration is 0.6dB/m, and the air temperature is 90°C. At this time, the BMS controller 320 determines that it is in the second-level alarm state.

When maintaining the first-level alarm state, the carbon monoxide concentration is 700ppm, the smoke concentration is 0.6dB/m, the air temperature is 60°C, and the air temperature changes at the same time is 1°C/s. At this time, the BMS controller 320 determines that it is a second-level alarm. state.

S300. When the alarm state is the first-level alarm state, control the alarm device 330 to send alarm information.

The battery compartment fire extinguishing system 300 also includes an alarm device 330; the alarm device 330 includes a display panel and an alarm 331;

The display panel is electrically connected to the BMS controller 320. 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. On the other hand, the BMS controller 320 controls the display panel to send alarm information. Information is the display content of the display panel, including but not limited to carbon monoxide concentration value, smoke concentration value, temperature value, and no alarm status or first-level alarm status or second-level alarm status, etc.

When actually used, in order to improve the recognition and thereby reflect the critical situation of the fire, this embodiment performs special processing such as font enlargement and flashing on the display content of the first-level alarm state or the second-level alarm state.

The alarm 331 is electrically connected to the BMS controller 320. On the one hand, the BMS controller 320 controls the battery compartment 100 to supply power to the alarm 331 to maintain the normal operation of the alarm 331. On the other hand, the BMS controller 320 controls the alarm 331 to send Alarm information, such as dazzling flashing light or sharp sound, that is, the alarm 331 can be a sound and light alarm 331 or a buzzer or flashlight or other warning device.

It can be understood that the alarm device 330 should be installed at a location that is convenient for the operator to inspect, for example, the alarm 331 should be installed at a high place and not blocked by other equipment.

S400. When the alarm status is the secondary alarm status, control the fire extinguishing device to turn on, and control the cabin power supply to cut off the power at the same time.

The battery compartment fire extinguishing system 300 also includes a fire extinguishing device, and the fire extinguishing device uses an aerosol fire extinguisher 340.

The aerosol fire extinguisher 340 is electrically connected to the BMS controller 320; on the one hand, the BMS controller 320 controls the opening of the aerosol fire extinguisher 340; on the other hand, the pressure switch of the aerosol fire extinguisher 340 sends a feedback signal to the BMS controller 320, so that The BMS controller 320 determines whether the aerosol fire extinguisher 340 has extinguished the fire.

Since the BMS controller 320 is electrically connected to the battery compartment 100, when the alarm state is a secondary alarm, the BMS controller 320 determines that a fire has occurred at this time, and the BMS controller 320 cuts off the cabin power supply to prevent the cabin power supply from being damaged when the power is on. The fire caused an explosion.

It can be understood that at the fire scene, the concentration of carbon monoxide, smoke concentration and air temperature are gradually increased, so the triggering conditions of the second-level alarm are based on the triggering conditions of the first-level alarm, and the second-level alarm status is based on the first-level alarm status, that is In the second-level alarm state, the execution action of the first-level alarm continues to be executed, and the BMS controller 320 still controls the alarm device 330 to send alarm information. At this time, the display panel displays the second-level alarm information, and the alarm 331 alarms.

Embodiment 2

Scenario 1: When the detector 310 is damaged or the electrical connection between the detector 310 and the BMS controller 320 is blocked, the BMS controller 320 fails to receive the alarm signal in time.

Scenario 2: The detector 310 operates normally, but the detection values have not yet reached the triggering conditions for the BMS controller 320 to determine the level 1 alarm state or the level 2 alarm state.

Please refer to Figure 1, Figure 2 and Figure 4. According to the above scenario one and scenario two, this embodiment also provides a fire extinguishing method for the battery compartment 100 based on the first embodiment to further improve the fire warning and processing capabilities of the battery compartment 100; the battery Cabin 100 fire extinguishing methods also include:

S110. Obtain the body temperature of the battery compartment 100.

The battery cabin fire extinguishing system 300 also includes a thermal wire 350. The thermal wire 350 is wound around the periphery of the battery cabin 100 to obtain the body temperature of the battery cabin 100. Since there is physical contact between the thermal wire 350 and the battery cabin 100, the heat The sensitive line 350 can closely monitor the temperature and temperature changes of the battery compartment 100, thereby improving the response speed and response capability of this embodiment.

S210. Determine whether the obtained body temperature is greater than or equal to the preset temperature value.

Thermal wire 350 is a temperature sensor that can detect temperature changes in the surrounding environment and trigger an alarm when the temperature exceeds a preset temperature value.

In actual application, the thermal wire 350 includes types of thermal wire 350 with various preset temperature values such as 90°C, 120°C, 150°C, 180°C, 220°C, etc. For example, when the preset temperature value is 220°C, the first preset air temperature value, the second preset air temperature value and the third preset air temperature value of the detector 310 are all lower than the preset value of the thermal line 350 temperature value, therefore, the detector 310 detects the fire before the thermal line 350, and the thermal line 350 is used as an alternative, that is, only in scenario one, the thermal line 350 comes into play; at this time, if the body temperature obtained If it is 230℃, it is judged that the body temperature is greater than the preset temperature value.

S310. If so, control the fire extinguishing device to turn on and control the cabin power supply to cut off.

The thermal line 350 is connected to the aerosol fire extinguisher 340. When it is judged that the obtained body temperature is greater than or equal to the preset temperature value, the thermal line 350 controls the aerosol fire extinguisher 340 to open to perform fire extinguishing work.

In addition, the aerosol fire extinguisher 340 is equipped with a pressure sensor, and the pressure sensor is electrically connected to the BMS controller 320. Therefore, after the aerosol fire extinguisher 340 is turned on, the pressure sensor sends a signal to the BMS controller 320, and the BMS controller 320 determines that it is a secondary alarm state. , that is, the BMS controller 320 controls the display panel to display the secondary alarm status, the alarm 331 alarms, and at the same time controls the cabin level power supply to be powered off.

Embodiment 3

Please refer to Figure 1, Figure 2 and Figure 5. When the detector 310 and the thermal line 350 do not automatically extinguish the fire due to malfunction or insensitivity, the user discovers a fire and performs manual emergency control to extinguish the fire.

Based on Embodiment 1 and Embodiment 2, this embodiment also provides a fire extinguishing method for the battery cabin 100 to further improve the fire warning and processing capabilities of the battery cabin 100; the fire extinguishing method for the battery cabin 100 also includes:

S120. Trigger the start command of the fire extinguishing device. The command to trigger the start of the fire extinguishing device includes:

S121. Get the time when the start button 360 is pressed;

S122. Determine whether the time for pressing the start button 360 is greater than the preset time threshold;

S123. If yes, the fire extinguishing device is turned on.

The battery compartment fire extinguishing system 300 also includes a start button 360, which is connected to the aerosol fire extinguisher 340, that is, the start button 360 directly controls the aerosol fire extinguisher 340 to perform fire extinguishing actions.

Specifically, a delay solenoid valve is provided between the start button 360 and the aerosol fire extinguisher 340; within 0 to T seconds of pressing the start button 360, the delay solenoid valve remains powered off; during T seconds of pressing the start button 360 After that, the delay solenoid valve is energized; where T is the preset time threshold.

For example: when T=30, within 0 to 30 seconds of pressing the start button 360, the delay solenoid valve remains powered off, and the aerosol fire extinguisher 340 does not start temporarily; after 30 seconds of pressing the start button 360, the delay The solenoid valve is energized and the aerosol fire extinguisher 340 is activated.

In addition, the pressure sensor sends a signal to the BMS controller 320, and the BMS controller 320 determines that the level 2 alarm state is present, that is, the BMS controller 320 controls the display panel to display the level 2 alarm state, the alarm 331 alarms, and at the same time controls the cabin power supply to cut off the power.

It is worth mentioning that, in order to facilitate the operator to press and ensure the safety of the operator, the start button 360 is provided outside the battery compartment 100 .

In summary, due to the particularity of the battery compartment 100, a fire will cause a large-scale explosion safety accident in the battery compartment 100 and around the battery compartment 100. This embodiment uses electric start, thermal start and manual start as three insurance plans for fire prevention. , which greatly improves the degree of fire prevention, speeds up fire extinguishing, and ensures personnel safety to the greatest extent, which has good implementation significance.

Embodiment 4

Please refer to Figure 1, Figure 2 and Figure 5. In the third embodiment, the work of manually discovering a fire and extinguishing the fire by pressing the start button 360 has not been achieved. The user wants to stop turning on the fire extinguishing device at any time. Regarding the problem of suspending the activation of the fire extinguishing device, based on the third embodiment, the command to trigger the activation of the fire extinguishing device in this embodiment also includes:

S124. If the time for pressing the start button 360 is within the preset time threshold, when the start button 360 is pressed again, the timer will be cleared and the fire extinguishing device will not be turned on.

Within 0 to T seconds after pressing the start button 360, press the start button 360 again, and the delay solenoid valve stops timing and clears it.

For example: within 0 to 30 seconds of pressing the start button 360, if the start button 360 is pressed again, the delay solenoid valve will stop timing and clear it, and the aerosol fire extinguisher 340 will not start.

Embodiment 5

Please refer to Figure 6. The battery energy storage box also includes an energy management system 400 (Energy Management System, EMS for short); the capacity management system is located in the battery compartment 100; the energy management system 400 is mainly used for energy control within the microgrid to maintain the microgrid. Power balance ensures the normal operation of the microgrid.

The energy management system 400 is electrically connected to the battery management system 200, that is, the battery management system 200 transmits early warning signals to the energy management system 400. The energy management system 400 controls and manages the microgrid of the battery cabin 100 to prevent fire accidents in the battery cabin 100. expansion.

Embodiment 6

Please refer to Figure 1 and Figure 2. Based on the above-mentioned embodiments, this embodiment provides a battery cabin fire extinguishing system 300, including: a first acquisition module, a first judgment module and a control module, wherein the first acquisition module is used to Obtain the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment 100; the first judgment module is used to judge the alarm status according to the obtained carbon monoxide concentration, smoke concentration and air temperature; the control module is used to control the alarm according to the judgment result of the first judgment module Device 330 sends alarm information and/or controls cabin level power outage and controls the opening of fire extinguishing devices.

It can be understood that the first acquisition module is the 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 that the level 1 alarm state is present, the BMS controller 320 controls the alarm device 330 to send alarm information.

When the BMS controller 320 determines that the level 2 alarm state is in place, the BMS controller 320 controls the alarm device 330 to send alarm information, control the cabin power supply to be cut off, and control the fire extinguishing device to turn on.

Further, this embodiment also includes: a second acquisition module and a second judgment module, wherein the second acquisition module is used to acquire the body temperature of the battery compartment 100; the second judgment module is used to determine whether the acquired body temperature is greater than or equal to the preset temperature value, and the judgment result controls the opening of the fire extinguisher.

It can be understood that the second acquisition module and the second judgment module are integrated into one body, specifically the heat-sensitive wire 350; the fire extinguishing device is the aerosol fire extinguisher 340.

After the aerosol fire extinguisher 340 is turned on, the pressure sensor sends a signal to the BMS controller 320, and the BMS controller 320 determines that it is in the second-level alarm state, that is, the BMS controller 320 controls the display panel to display the second-level alarm state, and the alarm 331 alarms, and at the same time the control cabin level power outage.

Embodiment 7

This embodiment provides a battery compartment fire extinguishing equipment, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, any one of the above-mentioned Embodiments 1 to 5 can be implemented. Example of how to extinguish a battery compartment fire.

Illustratively, a computer program may be divided into one or more modules/units, and one or more modules/units are stored in a memory and executed by a processor to complete this embodiment. One or more modules/units may be a series of computer program instruction segments capable of completing specific functions. The instruction segments are used to describe the execution process of the computer program in the battery compartment fire extinguishing equipment.

In this embodiment, the memory, the processor, and the computer program stored in the memory and runable on the processor are all located in the battery management system, thereby reducing the need to set up a fire host. By programming the battery management system and using logical operations, such that This embodiment realizes the functions of early warning, power outage, and fire extinguishing.

Embodiment 8

This embodiment provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the fire extinguishing method of the battery compartment in any one of the above-mentioned Embodiments 1 to 5 is implemented. .

Functions can be stored in a readable storage medium when implemented in the form of software function modules and sold or used as independent products. Based on this understanding, the technical solution of the present invention essentially contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, or can be completed by instructing relevant hardware through a computer program. , the computer program can be stored in a computer-readable storage medium, and includes a number of instructions to cause the computer program to execute all or part of the steps of the methods of various embodiments of the present invention. The aforementioned readable storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc., which can store program code. medium.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and cannot be understood as limitations of the present application. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A battery cabin fire extinguishing method, characterized by including: Obtain the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment; Determine the alarm status according to the obtained carbon monoxide concentration, the smoke concentration and the air temperature, and the alarm status includes a first-level alarm status and a second-level alarm status; When the alarm state is a first-level alarm state, control the alarm device to send alarm information; or When the alarm state is a secondary alarm state, the fire extinguishing device is controlled to be turned on, and the cabin level power supply is controlled to be powered off. 2. The battery cabin fire extinguishing method according to claim 1, characterized in that when the carbon monoxide concentration is greater than or equal to the first carbon monoxide concentration preset value, and the smoke concentration is greater than or equal to the first smoke concentration preset value, the When the air temperature is greater than or equal to the first air temperature preset value, the alarm state is the first-level alarm state. 3. The battery cabin fire extinguishing method according to claim 1, characterized in that when the carbon monoxide concentration is greater than or equal to the second carbon monoxide concentration preset value, and the smoke concentration is greater than or equal to the second smoke concentration preset value, the When the air temperature is greater than or equal to the second preset air temperature value, the alarm state is a secondary alarm state. 4. The battery cabin fire extinguishing method according to claim 1, characterized in that when the carbon monoxide concentration is greater than or equal to the second carbon monoxide concentration preset value, and the smoke concentration is greater than or equal to the second smoke concentration preset value, the When the air temperature is greater than the third preset air temperature value and the temperature change of the air temperature meets 1°C/s, the alarm state is a secondary alarm state. 5. The battery cabin fire extinguishing method according to claim 1, characterized in that the battery cabin fire extinguishing method further includes: Obtain the body temperature of the battery compartment; Determine whether the obtained body temperature is greater than or equal to a preset temperature value; If so, the fire extinguishing device is controlled to be turned on, and the cabin power supply is controlled to be powered off. 6. The battery cabin fire extinguishing method according to claim 1, characterized in that the battery cabin fire extinguishing method further includes: Triggering the start instruction of the fire extinguishing device, the triggering the start instruction of the fire extinguishing device includes: Get the time when the start button is pressed; Determine whether the time for pressing the start button is greater than a preset time threshold; If so, the fire extinguishing device is turned on. 7. The battery cabin fire extinguishing method according to claim 6, wherein the triggering the fire extinguishing device starting instruction further includes: If the time for pressing the start button is within the preset time threshold, when the start button is pressed again, the timer will be cleared and the fire extinguishing device will not be turned on. 8. A battery cabin fire extinguishing system, characterized by including: The first acquisition module is used to acquire the carbon monoxide concentration, smoke concentration and air temperature in the battery compartment; The first judgment module is used to judge the alarm status according to the obtained carbon monoxide concentration, the smoke concentration and the air temperature; A control module, configured to control the alarm device to send alarm information and/or control the cabin power supply to be cut off and the fire extinguishing device to be turned on based on the judgment result of the first judgment module. 9. The battery compartment fire extinguishing system according to claim 8, further comprising: a second acquisition module, used to acquire the body temperature of the battery compartment; The second judgment module is used to judge whether the obtained body temperature is greater than or equal to the preset temperature value, and to control the opening of the fire extinguishing device according to the judgment result. 10. A battery cabin fire extinguishing equipment, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that when the processor executes the computer program, the following is implemented: The battery compartment fire extinguishing method according to any one of claims 1 to 7.