Fire extinguishing quantitative method and device of battery, electronic equipment, storage medium and product

Abstract

The application relates to the technical field of battery safety management, in particular to a battery fire extinguishing quantitative method and device, electronic equipment, a storage medium and a product, wherein the method comprises the following steps: acquiring a heat release rate of a target battery under a preset thermal runaway condition; determining a heat release rate peak value of the target battery according to the heat release rate, and determining a correction factor of the target battery based on the heat release rate peak value; and determining a required fire extinguishing liquid consumption of the target battery by using the correction factor and a total heat release amount of the target battery. The application can effectively improve the accuracy of the fire extinguishing liquid consumption, extinguish the fire of the battery by using an accurate fire extinguishing liquid dosage, reduce the fire extinguishing cost and waste, improve the fire extinguishing efficiency, meet the battery fire extinguishing demand in various scenes, and effectively protect the safety of personnel and property.

Description

Technical Field

[0001] The present application relates to the technical field of battery safety management, and in particular to a battery fire extinguishing quantitative method, device, electronic device, storage medium and product. Background Art

[0002] As global demand for renewable and clean energy continues to grow, lithium-ion batteries, as high-energy-density energy storage devices, have been widely used in portable electronic devices, electric vehicles, and large-scale energy storage systems. However, under abnormal conditions such as overcharge, over-discharge, short circuit, or mechanical damage, lithium-ion batteries can experience thermal runaway, causing fires and posing a serious threat to human safety and property protection.

[0003] In related technologies, fire extinguishing methods for battery combustion mainly include the use of dry powder, gas, foam and water-based fire extinguishing agents, which can suppress the fire to a certain extent.

[0004] However, the fire extinguishing methods in related technologies lack an in-depth understanding of the thermal runaway characteristics of batteries and have limitations such as difficulty in determining the fire extinguishing dosage. This results in low targeted fire extinguishing strategies and low efficiency, and cannot meet the fire extinguishing needs in actual scenarios. Personnel safety and property cannot be effectively protected, which urgently needs to be addressed. Summary of the Invention

[0005] The present application provides a quantitative method, device, electronic device, storage medium, and product for battery fire extinguishing to address the problems of related art fire extinguishing methods lacking an in-depth understanding of the thermal runaway characteristics of batteries and having limitations such as difficulty in determining the fire extinguishing dosage. These issues result in low targeted fire extinguishing strategies and fire extinguishing efficiency, making it impossible to meet fire extinguishing needs in actual scenarios and effectively protecting personnel and property.

[0006] In a first aspect, an embodiment of the present application provides a quantitative method for extinguishing a battery fire, comprising the following steps: obtaining a heat release rate of a target battery under preset thermal runaway conditions; determining a peak heat release rate of the target battery based on the heat release rate, and determining a correction factor for the target battery based on the peak heat release rate; and determining a required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery.

[0007] Optionally, in one embodiment of the present application, determining the correction factor of the target battery based on the peak heat release rate includes: determining the peak heat release rate of a reference object; and obtaining the correction factor from the ratio between the peak heat release rate of the target battery and the peak heat release rate of the reference object.

[0008] Optionally, in one embodiment of the present application, the determining the required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat release of the target battery includes: performing capacity normalization processing on the total amount of heat release of the target battery to obtain the heat release amount after battery capacity normalization; correcting the heat release amount after battery capacity normalization using the correction factor to obtain the actual heat release amount of the target battery; and calculating the required amount of fire extinguishing fluid based on the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

[0009] Optionally, in one embodiment of the present application, after determining the correction factor of the target battery based on the peak value of the heat release rate, the method further includes: acquiring a packaging type of the target battery; and optimizing the correction factor based on the packaging type.

[0010] Optionally, in one embodiment of the present application, after determining the correction factor of the target battery based on the peak value of the heat release rate, the method further includes: acquiring environmental information of the target battery; and adjusting the correction factor according to the environmental information.

[0011] A second aspect of the present application provides a battery fire extinguishing quantitative device, comprising: a first acquisition module for acquiring the heat release rate of a target battery under preset thermal runaway conditions; a determination module for determining a peak heat release rate of the target battery based on the heat release rate, and determining a correction factor for the target battery based on the peak heat release rate; and a quantitative module for determining a required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery.

[0012] Optionally, in one embodiment of the present application, the determination module includes: a determination unit, configured to determine the peak heat release rate of a reference object; and a first calculation unit, configured to obtain the correction factor from a ratio between the peak heat release rate of the target battery and the peak heat release rate of the reference object.

[0013] Optionally, in one embodiment of the present application, the quantification module includes: a processing unit, used to perform capacity normalization processing on the total heat release of the target battery to obtain the heat release amount after the battery capacity is normalized; a correction unit, used to correct the heat release amount after the battery capacity is normalized using a correction factor to obtain the actual heat release amount of the target battery; and a second calculation unit, used to calculate the required amount of fire extinguishing fluid based on the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

[0014] Optionally, in one embodiment of the present application, it further includes: a second acquisition module, used to obtain the packaging type of the target battery after determining the correction factor of the target battery based on the peak value of the heat release rate; and an optimization module, used to optimize the correction factor based on the packaging type.

[0015] Optionally, in one embodiment of the present application, it further includes: a third acquisition module, used to obtain the environmental information of the target battery after determining the correction factor of the target battery based on the peak value of the heat release rate; and an adjustment module, used to adjust the correction factor according to the environmental information.

[0016] A third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the battery fire extinguishing quantitative method as described in the above embodiment.

[0017] A fourth aspect of the present application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned quantitative method for extinguishing a fire of a battery.

[0018] A fifth aspect of the present application provides a computer program product, including a computer program. When the computer program is executed, it is used to implement the above-mentioned quantitative fire extinguishing method for a battery.

[0019] The embodiment of the present application can determine a correction factor based on the heat release rate and the peak heat release rate of the battery, and then determine the amount of fire extinguishing fluid required by the battery in combination with the correction factor and the total amount of heat released by the battery. This achieves the correction of the heat release amount after the battery capacity is normalized by the correction factor, effectively improving the accuracy of the amount of fire extinguishing fluid used, and extinguishing the battery with a precise amount of fire extinguishing fluid, thereby reducing the cost and waste of fire extinguishing while improving the fire extinguishing efficiency. It can meet the battery fire extinguishing needs in various scenarios and effectively protect the safety of people and property. This solves the problem that the fire extinguishing methods in the related art lack an in-depth understanding of the thermal runaway characteristics of the battery, and there are limitations such as the difficulty in determining the fire extinguishing dosage, resulting in low targeted fire extinguishing strategies and fire extinguishing efficiency, which cannot meet the fire extinguishing needs in actual scenarios, and the safety of people and property cannot be effectively protected.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 This is a flow chart of a quantitative method for extinguishing a battery fire according to an embodiment of the present application;

[0023] Figure 2 This is a flow chart of a quantitative method for extinguishing a battery fire according to one embodiment of the present application;

[0024] Figure 3 Schematic diagram of the structure of a battery fire extinguishing quantitative device according to an embodiment of the present application;

[0025] Figure 4 Schematic diagram of the structure of an electronic device according to an embodiment of the present application.

[0026] Reference numerals:

[0027] 10 - battery fire extinguishing quantitative device; 100 - first acquisition module, 200 - determination module and 300 - quantitative module; 401 - memory, 402 - processor and 403 - communication interface. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] The following describes the quantitative fire extinguishing method, device, electronic device, storage medium and product of the battery in the embodiment of the present application with reference to the accompanying drawings. In view of the fact that the fire extinguishing methods in the related art mentioned in the above background technology lack an in-depth understanding of the thermal runaway characteristics of the battery and have limitations such as difficulty in determining the fire extinguishing dosage, resulting in low targeted fire extinguishing strategies and fire extinguishing efficiency, which cannot meet the fire extinguishing needs in actual scenarios, and the safety of personnel and property cannot be effectively protected, the present application provides a quantitative fire extinguishing method for batteries. In this method, a correction factor can be determined based on the heat release rate and heat release rate peak of the battery, and then the amount of fire extinguishing liquid required for the battery is determined by combining the correction factor and the total heat release of the battery. In this way, the heat release amount after the battery capacity is normalized is corrected by the correction factor, which effectively improves the accuracy of the amount of fire extinguishing liquid. By extinguishing the battery fire with an accurate fire extinguishing liquid dosage, the fire extinguishing cost and waste are reduced while the fire extinguishing efficiency is improved. It can meet the battery fire extinguishing needs in various scenarios and effectively protect the safety of personnel and property. This solves the problems that the fire extinguishing methods in related technologies lack an in-depth understanding of the thermal runaway characteristics of batteries, and have limitations such as difficulty in determining the fire extinguishing dose, resulting in low targeted fire extinguishing strategies and fire extinguishing efficiency, unable to meet the fire extinguishing needs in actual scenarios, and unable to effectively protect personnel safety and property.

[0030] Specifically, Figure 1 This is a flow chart of a quantitative method for extinguishing a battery fire provided in an embodiment of the present application.

[0031] like Figure 1 As shown, the battery fire extinguishing quantitative method includes the following steps:

[0032] In step S101 , a heat release rate of a target battery under a preset thermal runaway condition is obtained.

[0033] It can be understood that the preset thermal runaway conditions here can be understood as pre-set conditions that can cause the battery to enter a thermal runaway state, for example, the temperature reaches a temperature that can cause the battery to enter a thermal runaway state, the charging voltage or current is a voltage or current that can cause the battery to enter a thermal runaway state, etc.

[0034] The heat release rate (HRR) is a physical quantity used to describe the speed of energy release in a fire. It represents the amount of heat released per unit area or volume per unit time. For batteries, the HRR is a key indicator for assessing their fire hazard. Thermal runaway conditions such as overcharging, short circuiting, and external heating can rapidly release large amounts of heat, potentially leading to fires.

[0035] The heat release rate may be affected by many factors, such as the combustion characteristics of the battery material. Different materials have different combustion speeds and calorific values, so the heat release rate is also different; or the larger the mass of the battery, the higher the heat release rate may be; the shape, size and environmental conditions such as temperature, pressure and oxygen concentration will also affect the combustion process, thereby affecting the heat release rate.

[0036] Understanding the heat release rate of a battery is crucial for preventing and controlling battery fires. Therefore, the present invention can determine the heat release rate of a target battery under thermal runaway conditions, facilitating further processing based on the battery's heat release rate in the event of a thermal runaway fire.

[0037] Furthermore, when obtaining the heat release rate under thermal runaway conditions of the target battery, it can be obtained, but is not limited to, by measurement. Among them, the heat release rate can usually be measured using specialized experimental equipment, such as an accelerating rate calorimeter, a cone calorimeter, or a large-scale fire test facility. These devices can simulate a fire environment and measure parameters such as the heat released, smoke, and toxic gases produced by the sample during combustion. Alternatively, the heat release rate can also be indirectly calculated by measuring the oxygen consumption or heat release during the combustion of the sample.

[0038] The embodiment of the present application can obtain the heat release rate of the target battery under certain thermal runaway conditions, which helps to prepare data for fire extinguishing when the battery experiences thermal runaway through the heat release rate.

[0039] Step S102 : determining a peak heat release rate of a target battery according to the heat release rate, and determining a correction factor of the target battery based on the peak heat release rate.

[0040] It is understood that the Peak Heat Release Rate (pHRR) here can be understood as the maximum heat release rate per unit area of ​​the battery material during a fire. It is a key parameter for assessing fire intensity and the degree of heat release during battery material combustion. Specifically, the Peak Heat Release Rate refers to the maximum heat release rate per unit area or volume of the battery material after ignition, which reflects the maximum degree of heat release of the battery material during the combustion process.

[0041] Peak heat release rate (HRR) is a key indicator for assessing fire hazard. A higher HRR indicates a greater amount of heat released during combustion, and the greater the fire hazard. HRR is influenced by a variety of factors, including but not limited to the material's chemical composition, structural characteristics, ambient temperature, and oxygen concentration. Different materials may exhibit different HRR peaks under the same conditions. Therefore, HRR can also be considered an indicator of a material's combustion performance. By limiting a material's HRR peak, the fire safety performance of the product can be ensured.

[0042] Furthermore, because batteries and other items may differ in physical and chemical properties, a direct comparison of their peak heat release rates may not be comparable. Therefore, embodiments of the present application may introduce a correction factor to correct for such differences, allowing the peak heat release rates of different types of batteries, such as lithium-ion batteries and nickel-metal hydride batteries, to be compared.

[0043] Next, the determination of the correction factor in the embodiment of the present application is further explained.

[0044] Optionally, in one embodiment of the present application, determining a correction factor of a target battery based on the peak heat release rate includes: determining the peak heat release rate of a reference object; and obtaining the correction factor from a ratio between the peak heat release rate of the target battery and the peak heat release rate of the reference object.

[0045] Based on the relevant descriptions of other embodiments, it can be understood that in order to ensure the comparability of peak values ​​of different battery types, the present application can introduce a correction factor. Specifically, when determining the correction factor, the peak heat release rate of a reference object of the target battery can be first determined, and then the correction factor can be obtained by the ratio between the peak heat release rate of the target battery and the peak heat release rate of the reference object.

[0046] For example, by comparing the peak heat release rate HRR of a battery with the peak heat release rate HRR of gasoline, a correction factor R can be obtained. 峰值HRR , the formula can be expressed as follows:

[0047] R 峰值HRR = Peak HRR 电池 Peak HRR 汽油

[0048] Furthermore, when other batteries need to be compared with the target battery for peak heat release rate, the other batteries can be compared with the same reference to obtain a correction factor, thereby enabling comparison between different types of batteries based on the correction factor.

[0049] It should be noted that the specific calculation method and value of the correction factor in the embodiments of the present application can be obtained by professional and technical personnel in this field based on specific experimental conditions, measurement methods and comparison purposes and a series of experimental data, theoretical calculations and expert experience. This is only an illustrative explanation and no specific limitation is imposed.

[0050] In the embodiment of the present application, a correction factor can be calculated based on the peak heat release rate of the target battery and the peak heat release rate of the reference object. By introducing a correction factor, the difference in the peak heat release rate between different battery types is eliminated, thereby achieving comparability and consistency between different types of batteries.

[0051] Optionally, in one embodiment of the present application, after determining the correction factor of the target battery based on the peak value of the heat release rate, the method further includes: obtaining a packaging type of the target battery; and optimizing the correction factor based on the packaging type.

[0052] It is understood that, in addition to the significant impact of the battery's inherent materials on the peak heat release rate, the battery's packaging type also has a significant impact on the peak heat release rate. For example, various aspects such as packaging materials, packaging structure, and packaging technology all have an impact on the peak heat release rate of a battery. Therefore, embodiments of the present application can optimize the correction factor based on the target battery's packaging type.

[0053] For example, different packaging materials have different thermal stabilities. For example, fiberglass board, due to its flame retardancy and heat insulation properties, can reduce the rapid transfer of heat. When fiberglass board is used as packaging material, the explosion response time may increase and the peak temperature may decrease. However, when other packaging materials are used, both the peak temperature and the explosion response time may vary.

[0054] For example, the sealing of the packaging structure can also affect the gas release and heat transfer of the battery during thermal runaway. In an open environment, the peak heat release rate of the battery may be higher, while when burning in a closed box, the peak heat release rate may be lower.

[0055] Furthermore, the packaging type may also affect the battery's behavior during thermal runaway. For example, while corrugated paper packaging can slow the initial explosion of lithium-ion batteries, it only prolongs the period for a short time and may also increase the peak temperature. Furthermore, the thermal insulation layer in the packaging design can effectively inhibit heat transfer, thereby slowing the spread of thermal runaway. Therefore, when thermal runaway occurs in a battery cell, a good packaging design can act as an insulator, inhibiting heat spread and delaying the occurrence of an accident.

[0056] In the embodiment of the present application, the packaging type of the target battery can be used as part of the correction factor optimization, considering the impact of the packaging material and packaging structure on the heat release rate and the peak heat release rate when the battery undergoes thermal runaway, thereby improving the accuracy of the correction factor.

[0057] Optionally, in one embodiment of the present application, after determining the correction factor of the target battery based on the peak value of the heat release rate, the method further includes: acquiring environmental information of the target battery; and adjusting the correction factor according to the environmental information.

[0058] In the actual implementation process, in addition to the various aspects of the battery itself that will affect the peak heat release rate, the environment in which the battery is located will also have a certain impact on the peak heat release rate.

[0059] For example, at high altitudes, electrolyte pool fires may release less heat due to reduced combustion efficiency, resulting in a lower peak heat release rate compared to low altitudes. Another example is that in the presence of radiant heat flux, as combustion progresses, the electrolyte is continuously consumed and its thickness decreases. This prevents the electrolyte surface from receiving radiant heat from the heating cone and heat feedback from the flame from being reduced, potentially increasing the peak heat release rate.

[0060] In addition, the spatial environment in which the battery is located, such as open or enclosed, will also affect the peak heat release rate. For example, the peak heat release rate of the battery in an open environment experiment may be much higher than the peak heat release rate when burning in a closed box.

[0061] The embodiments of the present application can consider the impact of the environmental factors of the target battery on the peak heat release rate of the target battery, and optimize the correction factor based on the possible impact of the environment, fully considering the impact of the environment so that appropriate measures can be taken to control the thermal runaway of the battery in actual applications.

[0062] Step S103 : determining the required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery.

[0063] As a possible implementation method, the required amount of fire extinguishing fluid can be calculated based on the total heat release (THR) of the target battery. Furthermore, the embodiment of the present application can also determine a more accurate amount of fire extinguishing fluid based on the total heat release of the target battery combined with a correction factor.

[0064] The following is a further detailed explanation of this process.

[0065] Optionally, in one embodiment of the present application, the required amount of fire extinguishing fluid for the target battery is determined using a correction factor and the total amount of heat released by the target battery, including: performing capacity normalization processing on the total amount of heat released by the target battery to obtain the heat release amount after battery capacity normalization; correcting the heat release amount after battery capacity normalization using the correction factor to obtain the actual heat release amount of the target battery; and calculating the required amount of fire extinguishing fluid based on the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

[0066] Based on the relevant descriptions of other embodiments, it can be understood that the required amount of fire extinguishing fluid for the target battery can be determined by using the correction factor and the total amount of heat released by the target battery. Specifically, the total amount of heat released by the target battery can be normalized to obtain the heat release amount after normalization of the battery capacity Nor THR , then can provide normalized data for fire extinguishing of batteries / battery packs of different capacities Q1 (Ah) of this type of battery, where Nor THR =THR / Q1.

[0067] Total heat release, as used here, refers to the total amount of heat released by a battery under thermal runaway conditions and can be measured using a cone calorimeter or other device. Capacity normalization, as used here, refers to normalizing the total heat released by a battery under thermal runaway conditions according to the battery's capacity, allowing for comparison of the performance of batteries of different capacities under the same conditions. For example, dividing the total heat release by the battery's capacity yields the heat release per unit capacity.

[0068] For example, assume there are two batteries A and B with different capacities. Battery A has a capacity of 10 Ah and Battery B has a capacity of 20 Ah. Under the same test conditions, the total heat release of Battery A is measured to be 100 J, and the total heat release of Battery B is measured to be 200 J.

[0069] Heat release per unit capacity of battery A = 100 J / 10 Ah = 10 J / Ah;

[0070] Heat release per unit capacity of battery B = 200 J / 20 Ah = 10 J / Ah;

[0071] Although batteries A and B have different capacities, their heat release per unit capacity is the same, indicating that under the same conditions, the heat release performance per unit capacity of the two batteries is comparable.

[0072] After obtaining the heat release after normalization of the battery capacity, the embodiment of the present application can use the correction factor to correct the heat release after normalization of the battery capacity, thereby obtaining the actual heat release of the target battery. For example, the peak HRR of the battery is compared with the peak HRR of gasoline to obtain a correction factor R 峰值HRR , which can be expressed as follows:

[0073] R 峰值HRR = Peak HRR 电池 Peak HRR 汽油

[0074] The corrected capacity normalized heat release can be further expressed as follows:

[0075] NC THR =Nor THR *R 峰值HRR =THR / Q1*peak HRR 电池 Peak HRR 汽油

[0076] Finally, the required amount of fire extinguishing fluid can be calculated based on the actual heat release, i.e., the corrected capacity-normalized heat release, the battery capacity and number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

[0077] For example, based on the battery capacity Q2 and number n of the battery pack, as well as the specific heat capacity C (J / (kg·°C)) of the fire extinguishing fluid, the required amount of fire extinguishing fluid m (kg) is calculated when the fire extinguishing fluid temperature rises by △t. The formula can be expressed as follows:

[0078] m=NC THR *Q2*n / (C*△t)=THR / Q1*peak HRR 电池 Peak HRR 汽油 *Q2*n / (C*△t)

[0079] Additionally, after calculating the amount of fire extinguishing fluid, embodiments of the present application can also verify this, for example, by using the calculated amount of fire extinguishing fluid to extinguish a fire on a battery pack and adjusting the amount of fire extinguishing fluid based on the amount of fire extinguishing fluid blocked by the fire extinguishing sample housing.

[0080] The embodiments of the present application can perform capacity normalization on the total heat release of the battery and obtain the heat release amount after normalization of the battery capacity, effectively eliminating the impact of battery capacity differences on the comparison of heat release performance, making the comparison results more objective and accurate. The final amount of fire extinguishing fluid is calculated in combination with the correction factor, which can effectively improve the accuracy of the present application, thereby reducing the waste of fire extinguishing fluid, reducing costs and pollution, and effectively protecting the safety of people and property.

[0081] The present application is described in detail below using a specific embodiment.

[0082] like Figure 2 FIG. 1 is a flow chart of a quantitative method for extinguishing a battery fire according to an embodiment of the present application.

[0083] Take a battery pack consisting of 15 25Ah lithium iron phosphate (LFP) batteries as an example:

[0084] Step S201: Obtain the peak HRR of 25Ah lithium iron phosphate using adiabatic calorimeter, which is 1.2MW / m 2 , THR is about 1.8MJ, at this time: Nor THR =180 / 25*10 4 J / Ah=7.2*10 4 J / Ah;

[0085] Step S202: Obtain the peak heat release rate of gasoline, which is approximately 2.0 MW / m 2 , the calculated correction factor is 0.6;

[0086] Step S203: Obtain the corrected capacity normalized heat release parameter, which can be expressed as follows:

[0087] NC THR =Nor THR *R 峰值HRR =3.6*10 4 J / Ah;

[0088] Step S204: For a battery pack consisting of 15 25Ah lithium iron phosphate (LFP) batteries, assuming that water is used as the fire extinguishing liquid, since water will flow rapidly during fire extinguishing, the average water temperature will rise by about 10°C. Therefore, according to the specific heat capacity of water of 4.2×10 3 J / (kg·K), the amount of fire extinguishing fluid required is:

[0089] m=3.6*10 4 *25*15 / (4.2*10 3 *10)=321kg;

[0090] Step S205: Verify the actual fire extinguishing process and adjust the amount of fire extinguishing fluid appropriately based on the verification result.

[0091] According to the quantitative fire extinguishing method for batteries proposed in the embodiments of the present application, a correction factor can be determined based on the heat release rate and the peak heat release rate of the battery, and then the amount of fire extinguishing liquid required for the battery can be determined by combining the correction factor and the total heat release of the battery. In this way, the heat release amount after normalization of the battery capacity is corrected by the correction factor, which effectively improves the accuracy of the amount of fire extinguishing liquid used. By extinguishing the battery fire with a precise amount of fire extinguishing liquid, the fire extinguishing cost and waste are reduced while the fire extinguishing efficiency is improved. It can meet the battery fire extinguishing needs in various scenarios and effectively protect the safety of people and property. In this way, the problems of the fire extinguishing methods in the related art lacking an in-depth understanding of the thermal runaway characteristics of the battery and having limitations such as the difficulty in determining the fire extinguishing dosage are solved, resulting in low targeted fire extinguishing strategies and fire extinguishing efficiency, which cannot meet the fire extinguishing needs in actual scenarios and the inability to effectively protect the safety of people and property are solved.

[0092] Next, a battery fire extinguishing quantitative device according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0093] Figure 3 It is a structural schematic diagram of a battery fire extinguishing quantitative device according to an embodiment of the present application.

[0094] like Figure 3 As shown, the battery fire extinguishing quantitative device 10 includes: an acquisition module 100 , a determination module 200 and a quantitative module 300 .

[0095] Among them, the first acquisition module is used to obtain the heat release rate of the target battery under preset thermal runaway conditions.

[0096] The determination module is configured to determine a peak heat release rate of a target battery according to the heat release rate, and determine a correction factor of the target battery based on the peak heat release rate.

[0097] The quantitative module is used to determine the required amount of fire extinguishing fluid of the target battery by using the correction factor and the total amount of heat release of the target battery.

[0098] Optionally, in one embodiment of the present application, the determining module includes:

[0099] A determination unit is provided for determining the peak heat release rate of a reference object.

[0100] The first calculation unit is configured to obtain a correction factor based on a ratio between a peak value of a heat release rate of the target battery and a peak value of a heat release rate of a reference object.

[0101] Optionally, in one embodiment of the present application, the quantitative module includes:

[0102] The processing unit is used to perform capacity normalization processing on the total amount of heat release of the target battery to obtain the heat release amount after normalization of the battery capacity.

[0103] The correction unit is used to correct the heat release amount after the battery capacity is normalized using the correction factor to obtain the actual heat release amount of the target battery.

[0104] The second calculation unit is used to calculate the required amount of fire extinguishing fluid according to the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

[0105] Optionally, in one embodiment of the present application, the battery fire extinguishing quantitative device 10 further includes:

[0106] The second acquisition module is configured to acquire the packaging type of the target battery after determining the correction factor of the target battery based on the peak value of the heat release rate.

[0107] An optimization module for optimizing the correction factor based on the package type.

[0108] Optionally, in one embodiment of the present application, the battery fire extinguishing quantitative device 10 further includes:

[0109] The third acquisition module is configured to acquire the environment information of the target battery after determining the correction factor of the target battery based on the peak value of the heat release rate.

[0110] The adjustment module is used to adjust the correction factor according to the surrounding environment information.

[0111] It should be noted that the above explanation of the embodiment of the battery fire extinguishing quantitative method is also applicable to the battery fire extinguishing quantitative device of this embodiment, and will not be repeated here.

[0112] According to the battery fire extinguishing quantitative device proposed in the embodiment of the present application, a correction factor can be determined based on the heat release rate and the peak heat release rate of the battery, and then the amount of fire extinguishing liquid required for the battery can be determined by combining the correction factor and the total heat release of the battery. In this way, the heat release amount after the battery capacity is normalized is corrected by the correction factor, which effectively improves the accuracy of the amount of fire extinguishing liquid used. By extinguishing the battery fire with a precise amount of fire extinguishing liquid, the fire extinguishing cost and waste are reduced while the fire extinguishing efficiency is improved. It can meet the battery fire extinguishing needs in various scenarios and effectively protect the safety of people and property. In this way, the problems of the fire extinguishing methods in the related art lacking an in-depth understanding of the thermal runaway characteristics of the battery and having limitations such as the difficulty in determining the fire extinguishing dosage are solved, resulting in low targeted fire extinguishing strategies and fire extinguishing efficiency, which cannot meet the fire extinguishing needs in actual scenarios and the inability to effectively protect the safety of people and property are solved.

[0113] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0114] Memory 401 , processor 402 , and computer programs stored in the memory 401 and executable on the processor 402 .

[0115] When the processor 402 executes the program, the quantitative method for extinguishing a fire of a battery provided in the above embodiment is implemented.

[0116] Furthermore, the electronic device further includes:

[0117] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0118] The memory 401 is used to store computer programs that can be run on the processor 402 .

[0119] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0120] If the memory 401, the processor 402, and the communication interface 403 are implemented independently, the communication interface 403, the memory 401, and the processor 402 can be connected to each other via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0121] Optionally, in a specific implementation, if the memory 401 , the processor 402 and the communication interface 403 are integrated on a chip, the memory 401 , the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0122] The processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0123] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned quantitative method for extinguishing a fire of a battery.

[0124] An embodiment of the present application further provides a computer program product, including a computer program, which can run computer instructions. When the computer instructions are executed by a processor, the battery fire extinguishing quantitative method provided in the embodiment of the present application is implemented.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0126] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "N" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0127] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing a custom logical function or process step, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed in a different order than shown or discussed, including performing functions in a substantially simultaneous manner or in a reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0128] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or N wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program can be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing it in other suitable ways as necessary, and then storing it in a computer memory.

[0129] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiment, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented using hardware, as in another embodiment, it can be implemented using any one or a combination of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0130] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0131] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0132] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A quantitative method for extinguishing a battery fire, characterized in that: The following steps are involved: Obtain the heat release rate of the target battery under preset thermal runaway conditions; determining a peak heat release rate of the target battery according to the heat release rate, and determining a correction factor of the target battery based on the peak heat release rate; Determining the required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery; The method of determining the required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery includes: performing capacity normalization processing on the total amount of heat released by the target battery to obtain a capacity-normalized heat release amount; correcting the capacity-normalized heat release amount by using the correction factor to obtain an actual heat release amount of the target battery; and calculating the required amount of fire extinguishing fluid based on the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

2. The battery fire extinguishing quantitative method according to claim 1, characterized in that: The determining the correction factor of the target battery based on the peak heat release rate includes: Determine the peak heat release rate of the reference object; The correction factor is obtained from a ratio between a peak value of the heat release rate of the target battery and a peak value of the heat release rate of the reference.

3. The battery fire extinguishing quantitative method according to claim 1, characterized in that: After determining the correction factor of the target battery based on the peak heat release rate, the method further includes: Obtaining the packaging type of the target battery; The correction factor is optimized based on the package type.

4. The battery fire extinguishing quantitative method according to claim 1, characterized in that: After determining the correction factor of the target battery based on the peak heat release rate, the method further includes: Acquiring environmental information of the target battery; The correction factor is adjusted according to the environmental information.

5. A battery fire extinguishing quantitative device, characterized in that: include: An acquisition module is used to obtain the heat release rate of the target battery under preset thermal runaway conditions; a determination module, configured to determine a peak heat release rate of the target battery according to the heat release rate, and determine a correction factor of the target battery based on the peak heat release rate; a quantitative module, configured to determine a required amount of fire extinguishing fluid for the target battery using the correction factor and the total amount of heat released by the target battery; The quantification module includes: a processing unit for performing capacity normalization processing on the total heat release of the target battery to obtain the heat release amount after the battery capacity is normalized; a correction unit for correcting the heat release amount after the battery capacity is normalized using a correction factor to obtain the actual heat release amount of the target battery; and a second calculation unit for calculating the required amount of fire extinguishing fluid based on the actual heat release amount, the battery capacity and the number of single cells of the target battery, the specific heat capacity of the fire extinguishing fluid, and the temperature rise value of the fire extinguishing fluid.

6. The battery fire extinguishing quantitative device according to claim 5, characterized in that: The determining module includes: a determination unit for determining a peak heat release rate of a reference object; A calculation unit is configured to obtain the correction factor based on a ratio between a peak value of the heat release rate of the target battery and a peak value of the heat release rate of the reference object.

7. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the battery fire extinguishing quantitative method according to any one of claims 1 to 4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the battery fire extinguishing quantitative method according to any one of claims 1 to 4.

9. A computer program product comprising a computer program, characterized in that When the computer program is executed, it is used to implement the battery fire extinguishing quantitative method according to any one of claims 1 to 4.

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