CN117398635B

CN117398635B - Fire safety protection method and device based on energy storage container and storage medium

Info

Publication number: CN117398635B
Application number: CN202311724092.3A
Authority: CN
Inventors: 李智; 彭锋
Original assignee: Wanzhen Fire Technology Guangdong Co ltd
Current assignee: Wanzhen Fire Technology Guangdong Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-03-19
Anticipated expiration: 2043-12-15
Also published as: CN117398635A

Abstract

The invention discloses a fire safety protection method, a device and a storage medium based on an energy storage container, wherein the method comprises the following steps: acquiring a first pressure data image of a pressure measuring module of the battery pack i in a first preset time period through a camera module, and acquiring a plurality of first pressure values according to the first pressure data image; generating a first pressure change curve according to the plurality of first pressure values and the corresponding shooting moments thereof; detecting whether a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve; when a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve; and when the target fire state evaluation value is larger than the preset fire state evaluation value, starting fire extinguishing equipment in the battery pack i to perform fire extinguishing operation. By adopting the invention, the fire extinguishing of the energy storage container can be realized.

Description

Fire safety protection method and device based on energy storage container and storage medium

Technical Field

The invention relates to the technical field of electric energy storage systems, in particular to a fire safety protection method, device and storage medium based on an energy storage container.

Background

In practical application, the energy storage container is generally required to have larger capacity and voltage, so that a plurality of single battery packs are required to be arranged in the energy storage container and form battery pack groups in series and parallel, thereby meeting the energy storage requirement, and the plurality of battery pack groups form the energy storage container. Taking a lithium battery energy storage container as an example, when a fire disaster occurs, the lithium battery burns, so that the lithium battery has the characteristics of high burning temperature, high burning speed, large amount of toxic and harmful smoke generated, fire disaster suppression difficulty and the like, and the risk of explosion exists in the burning process, so that the lithium battery brings great challenges to fire extinguishment and rescue. If the fire extinguishing pipe is used for extinguishing fire of the energy storage container, the fire extinguishing pipe cannot determine the initial fire extinguishing position of a fire disaster, so that the fire extinguishing pipe cannot accurately extinguish the fire disaster area of the energy storage container, and therefore, the problem of how to accurately determine the fire disaster area in the energy storage container and realize fixed-point fire extinguishing is urgently solved.

Disclosure of Invention

The embodiment of the invention provides a fire safety protection method, a fire safety protection device and a storage medium based on an energy storage container, which can accurately determine a fire disaster area in the energy storage container and realize fixed-point fire extinguishment.

In a first aspect, an embodiment of the present invention provides a fire protection method based on an energy storage container, applied to the energy storage container, where the energy storage container includes: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: the method comprises the steps of setting a display area of the pressure measurement module outside a shell of the battery pack, and the method comprises the following steps:

Acquiring first pressure data images of a display area of the pressure measuring module of the battery pack i in a first preset time period before the current moment through the camera module, and obtaining a plurality of first pressure data images, wherein each first pressure data image corresponds to one shooting moment; the battery pack i is any battery pack of the at least one battery pack;

extracting a pressure value at each shooting moment according to the plurality of first pressure data images to obtain a plurality of first pressure values;

generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each first pressure value in the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value;

detecting whether a pressure value greater than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve;

when a pressure value larger than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve;

and when the target fire state evaluation value is larger than a preset fire state evaluation value, starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation.

In a second aspect, an embodiment of the present invention provides a fire protection device based on an energy storage container, applied to the energy storage container, where the energy storage container includes: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: fire extinguishing pipe and pressure measurement module, pressure measurement module's display area sets up outside the casing of battery package, fire control safety arrangement based on energy storage container includes: the fire extinguishing system comprises a detection unit, a control unit and a fire extinguishing unit; wherein,

the detection unit is used for obtaining pressure data images of the display area of the pressure measuring module of the battery pack i in a first preset time period before the current moment through the camera module, so as to obtain a plurality of pressure data images, wherein each pressure data image corresponds to one shooting moment; the battery pack i is any battery pack of the at least one battery pack;

the control unit is used for extracting the pressure value of each shooting moment according to the plurality of pressure data images to obtain a plurality of first pressure values; generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each first pressure value in the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value; detecting whether a pressure value greater than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve; when a pressure value larger than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve;

And the fire extinguishing unit is used for starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation when the target fire state evaluation value is larger than a preset fire state evaluation value.

In a third aspect, embodiments of the present application provide an energy storage container comprising a processor, a memory, a communication interface, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method according to the first aspect when executing the computer program.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program, the computer program causing a computer to perform the method according to the first aspect.

By implementing the embodiment of the application, the following beneficial effects are achieved:

it can be seen that the fire safety protection method based on the energy storage container described in the embodiments of the present application is applied to the energy storage container, where the energy storage container includes: make a video recording module and battery package group, battery package group includes at least one battery package, and the inside of each battery package all disposes a fire extinguishing apparatus, and fire extinguishing apparatus includes: the method comprises the steps that the fire extinguishing pipe and the pressure measuring module are arranged outside a shell of the battery pack, and the method comprises the following steps: acquiring first pressure data images of a display area of a pressure measuring module of a battery pack i in a first preset time period before the current moment through a camera module, and obtaining a plurality of first pressure data images, wherein each first pressure data image corresponds to one shooting moment; the battery pack i is any battery pack of the at least one battery pack; extracting a pressure value at each shooting moment according to the plurality of first pressure data images to obtain a plurality of first pressure values; generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each of the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value; detecting whether a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve; when a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve; when the target fire state evaluation value is larger than the preset fire state evaluation value, starting fire extinguishing equipment in the battery pack i to perform fire extinguishing operation; on the one hand, the display image of the pressure measuring module is recorded through the camera module, so that the pressure condition of the battery pack can be known in real time, a high-risk area in the energy storage container can be rapidly and accurately determined, and meanwhile, the labor can be saved; on the other hand, when the pressure value larger than or equal to the preset pressure value exists in the first pressure change curve, further analysis is carried out on the battery pack, the target fire state evaluation value of the battery pack is determined according to the first pressure change curve, the fire can be evaluated and controlled, if the target fire state evaluation value is larger than the preset fire state evaluation value, namely, the condition that the fire is serious or in a dangerous state is indicated, the fire extinguishing equipment in the battery pack can be started to carry out the fire extinguishing operation on the fire extinguishing equipment, and the fire is effectively controlled; in summary, by implementing the embodiment of the application, the fire disaster area in the energy storage container can be accurately determined, and fixed-point fire extinguishment is realized.

Drawings

In order to more clearly describe the embodiments of the present invention or the technical solutions in the background art, the following description will describe the drawings that are required to be used in the embodiments of the present invention or the background art.

Fig. 1 is a schematic structural view of a fire extinguishing apparatus according to an embodiment of the present application;

fig. 2 is a schematic structural view of a battery pack according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a fire protection method based on an energy storage container according to an embodiment of the present application;

FIG. 4 is a functional unit block diagram of a fire safety protection device based on an energy storage container according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an energy storage container according to an embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a fire extinguishing apparatus 100 according to an embodiment of the present application. As a fire-extinguishing apparatus 100 shown in fig. 1, the fire-extinguishing apparatus 100 comprises: the fire extinguishing device comprises a bead explosion module 101, a connector 102, a pressure measurement module 103 and a fire extinguishing pipe 104;

The bead blasting module 101 includes a bearing structure and a glass bulb, where the bearing structure is used to bear the glass bulb and is used to connect with a main frame of the joint 102, and the first fire extinguishing agent is built in the glass bulb. The pressure measuring module 103 may include one or more of a pressure gauge, a pressure sensor, and a digital pressure gauge, which is not limited herein; the load bearing structure may be a pipe valve shower head; the glass bulb can be a temperature-sensing glass ball; the fire extinguishing pipe 104 contains a second extinguishing agent therein.

Wherein the composition of the first fire extinguishing agent may include at least one of: nitrogen, carbon dioxide, sodium bicarbonate, ammonium phosphate, water, perfluoro-hexanone, etc., without limitation, the composition of the second fire extinguishing agent may include at least one of the following: nitrogen, argon, sodium bicarbonate, ammonium phosphate, water, perfluoro-hexanone, and the like, without limitation. The composition of the first fire suppressant may be the same as or different from the composition of the second fire suppressant.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a battery pack 200 according to an embodiment of the present disclosure. The battery pack 200 as shown in fig. 2 includes: fire suppression apparatus 100, display area 201 of pressure measurement module of fire suppression apparatus, hole site 202, battery package housing 203.

The battery pack housing 203 may be provided with a hole 202, and the fire extinguishing apparatus 100 shown in fig. 1 may be installed on the left side of the battery pack 200 as shown in fig. 2 with the hole 202 positioned above the left side of the battery pack.

The display area 201 of the pressure measurement module of the fire extinguishing device is displayed outside the battery pack 200 through the hole site 202 on the battery pack housing 203, so that the image information displayed by the pressure gauge can be observed from the periphery of the battery pack 200, the integrated design of the battery pack housing 203 and the pressure measurement module is realized, the waterproof and dustproof level of IP67 can be met, and in addition, other components except the display area 201 of the pressure measurement module of the fire extinguishing device in the fire extinguishing device 100 can be all located inside the battery pack 200.

The energy storage container may be an electrical energy storage system. The energy storage container may include a camera module and a battery pack including at least one battery pack, each battery pack having an interior configured with a fire suppression device. The camera shooting module in the energy storage container is used for detecting a display area of the pressure measuring module, and acquiring pressure data of the battery pack according to the display area.

In practical applications, the first fire extinguishing agent may have a first activation temperature, the second fire extinguishing agent may have a second activation temperature, and the first activation temperature may be less than or equal to the second activation temperature, but the first activation temperature may not be greater than the second activation temperature; the first starting temperature is determined by the material of the glass bubble, the thickness of the glass bubble and the first fire extinguishing agent characteristic, and the second starting temperature is determined by the material of the fire extinguishing pipe, the thickness of the fire extinguishing pipe and the second fire extinguishing agent characteristic.

Fire extinguishing principles of fire extinguishing apparatus provided by embodiments of the present application: when the fire extinguishing pipe catches fire in the environment, the second fire extinguishing agent in the fire extinguishing pipe can be gasified due to the rise of the environmental temperature so as to increase the internal pressure in the fire extinguishing pipe, and the fire extinguishing pipe can be broken when the internal pressure of the fire extinguishing pipe reaches the bearable threshold value of the fire extinguishing pipe, so that the second fire extinguishing agent is released to extinguish fire; the self-breaking principle of the glass bubbles in the bead blasting module is the same.

If the first starting temperature is smaller than the second starting temperature, when the environment catches fire, the environment temperature rises, the first fire extinguishing agent and the second fire extinguishing agent in the glass bubble and the fire extinguishing pipe are gasified to increase the internal pressure, and as the first starting temperature is smaller than the second starting temperature, the glass bubble is broken firstly, the first fire extinguishing agent in the broken glass bubble is released to perform fire extinguishing operation, and if the first fire extinguishing agent is successfully extinguished before the temperature rises to the second starting temperature, at the moment, the temperature drops, the fire extinguishing pipe is not broken, and the fire extinguishing is finished; if the first extinguishing agent does not successfully extinguish the fire before the temperature rises to the second starting temperature, at this time, the temperature continues to rise, when the temperature rises to the second starting temperature, the fire extinguishing pipe is broken, at this time, the end part of the fire extinguishing pipe is not plugged again after the glass bubbles are broken, and the second extinguishing agent can be released simultaneously from the end part of the fire extinguishing pipe and the broken part of the fire extinguishing pipe so as to perform fire extinguishing operation.

If the first starting temperature is equal to the second starting temperature, the ambient temperature rises to the first starting temperature when the environment catches fire, and the fire extinguishing pipe and the glass bubble are broken at the same time, and the first fire extinguishing agent and the second fire extinguishing agent are released for fire extinguishing operation.

Referring to fig. 3, fig. 3 is a schematic flow chart of a fire protection method based on an energy storage container according to an embodiment of the present application, where the method shown in fig. 3 is applied to the energy storage container, and the energy storage container includes: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: the method comprises the following steps of:

s301, acquiring first pressure data images of a display area of the pressure measuring module of a battery pack i in a first preset time period before the current moment through the image capturing module, and obtaining a plurality of first pressure data images, wherein each first pressure data image corresponds to one shooting moment; the battery pack i is any one of the at least one battery pack.

It should be explained that the fire extinguishing apparatus may further include a bead blasting module, where the bead blasting module may include a glass bulb, and the first fire extinguishing agent is disposed in the glass bulb. There may be one or more camera modules, each camera module may monitor the pressure measurement module of one or more battery packs, and the camera modules are mounted on the energy storage container.

In this embodiment of the present application, the first preset time period may be preset or default, or may also be an empirical value.

In a specific implementation, the camera module may acquire the first pressure data image of the display area of the pressure measurement module of the battery pack i in a first preset time period before the current moment to obtain a plurality of first pressure data images, specifically, the start time and the end time of the camera module may be determined according to the first preset time period, when the start time arrives, the camera module is started to start shooting, the camera module may continuously or intermittently acquire the first pressure data image of the display area of the pressure measurement module of the battery pack i, and the interval time of the camera module may be preset or default to obtain a plurality of first pressure data images.

Therefore, the display image of the battery pack pressure measuring module is recorded through the camera module, so that the pressure condition of the battery pack can be monitored and analyzed in time, the safety of the energy storage container is improved, and the safe operation of the energy storage container is guaranteed.

S302, extracting pressure values at each shooting moment according to the plurality of first pressure data images to obtain a plurality of first pressure values.

In an embodiment of the present application, the method for extracting the pressure value at each shooting time from the plurality of first pressure data images may include at least one of: image processing algorithms, optical character recognition, manual labeling, etc., are not limited herein.

In a specific implementation, an image processing algorithm may be adopted to extract a pressure value at each shooting time from a plurality of first pressure data images to obtain a plurality of first pressure values, specifically, image preprocessing may be performed on the first pressure data images, for example, denoising, contrast enhancement, binarization and other operations may be performed on the first pressure data images, so that the algorithm may better identify the position of the pointer of the pressure gauge, after identifying the position of the pointer, the pressure value corresponding to each scale line may be calculated according to the position and the interval of the scale line, and the pressure value shown by the current pressure gauge may be calculated according to the position of the pointer in the image and the scale relationship of the pressure gauge, so that, in order to simplify the calculation process, information such as the scale interval and the maximum scale value of the pressure gauge may be written into the algorithm in advance.

It should be explained that, in the embodiment of the present application, the image capturing module is used to obtain the pressure data image, and then the pressure value is obtained from the pressure data image, because the image capturing module can capture the display areas of the pressure measuring modules of the plurality of battery packs at the same time, the use of the equipment is reduced, so that the space utilization rate is optimized, and the space pressure inside the energy storage container is reduced; if space considerations are not taken into account, a pressure sensor may also be used to directly acquire the pressure of the fire tube.

Therefore, the pressure value is extracted through the image processing algorithm, higher precision and accuracy can be realized, and compared with manual reading, the scale mark and the pointer position in the pressure meter image can be accurately identified through the image processing algorithm, so that the more accurate pressure value is obtained.

S303, generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each of the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value.

In this embodiment of the present application, a plurality of coordinate points may be formed by each of the plurality of first pressure values and the shooting time corresponding to the first pressure value, a first pressure change curve may be drawn according to the plurality of coordinate points, specifically, a plurality of coordinate points may be formed by the first pressure value and the time corresponding to the first pressure value, a data set of coordinate points may be obtained, a scatter diagram may be drawn according to the data set, all the coordinate points may be represented in a coordinate system, the coordinate system uses time as an abscissa, the pressure value as an ordinate, and then curve fitting may be performed according to the plurality of coordinate points, so that as to make as many points as possible fall around the curve, and a first pressure change curve may be obtained.

Therefore, a first pressure change curve is generated according to the first pressure values and shooting time corresponding to each first pressure value in the first pressure values, so that the pressure change trend and fluctuation condition of the battery pack can be intuitively displayed, the change rule of the pressure of the battery pack can be analyzed, the abnormal condition of the battery pack can be timely found and timely processed, and the stability and performance of the energy storage container are determined.

S304, detecting whether a pressure value larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve.

In this embodiment, the preset pressure value may be preset or default, and may be an empirical value.

In the implementation, the pressure maximum value of the first pressure change curve can be obtained first, and the magnitude relation between the pressure maximum value and the preset pressure value is compared; if the maximum pressure value is greater than or equal to the preset pressure value, it is indicated that the pressure value greater than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, and there is a risk of fire, and further analysis of the battery pack i is required.

Optionally, when a pressure value greater than or equal to the preset pressure value does not exist in the pressure values corresponding to the first pressure change curve, determining that the battery pack i is in a fire-free state.

In the embodiment of the application, the pressure maximum value of the first pressure change curve can be obtained first, and the magnitude relation between the pressure maximum value and the preset pressure value is compared; if the maximum pressure value is smaller than the preset pressure value, it is indicated that no pressure value greater than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, that is, the pressure values of the battery pack i in the first preset time period are smaller than the preset pressure value, and the situation can be considered that no fire risk occurs.

Therefore, whether the pressure value which is larger than or equal to the preset pressure value exists in the pressure value corresponding to the first pressure change curve is detected to determine the next operation, if the pressure value does not exist, the risk of the battery pack that no fire occurs is indicated, the next operation is not needed, device resources are saved, if the pressure value does not exist, the risk of the battery pack that the fire occurs is indicated, the next operation is needed, corresponding preventive measures can be formulated through analysis of the change of the pressure value and the condition that the pressure value exceeds the preset value, the fireproof capacity of the battery pack is improved, and safe operation of the battery pack is ensured.

And S305, when a pressure value which is larger than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve.

In this embodiment of the present application, the fire state evaluation value is a value that reflects the degree of risk of a fire occurring in the battery pack, and the higher the fire state evaluation value, the higher the degree of risk of a fire occurring in the battery pack.

In specific implementation, when it is determined that a pressure value greater than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve, a target fire state evaluation value of the battery pack i is determined according to the first pressure change curve.

Optionally, in step S305, the determining the target fire state evaluation value of the battery pack i according to the first pressure variation curve may further include the following steps:

a1, intercepting a partial pressure change curve with a pressure value greater than or equal to the preset pressure value from the first pressure change curve;

a2, dividing the partial pressure change curve into m segments to obtain m pressure change curve segments, wherein the duration of each pressure change curve segment is a preset duration, and m is an integer greater than 5;

a3, fitting each pressure change curve segment in the m pressure change curve segments to obtain m fitting straight lines;

a4, acquiring the slope of each fitting straight line in the m fitting straight lines to obtain m slope values;

A5, determining target mean square deviations of the m slope values;

and A6, determining a target fire state evaluation value of the battery pack i corresponding to the target mean square error.

In an embodiment of the present application, a method for fitting a curve segment may include at least one of: the slope of the fitted straight line is a value reflecting the trend of the battery pack pressure change, and the like, not limited herein.

Intercepting a partial pressure change curve with a pressure value larger than or equal to a preset pressure value from a first pressure change curve, dividing the partial pressure change curve into m segments to obtain m pressure change curve segments, wherein the duration of each pressure change curve segment is a preset duration, specifically, traversing each first pressure value on the first pressure change curve from a starting point to an ending point, judging whether each first pressure value is larger than or equal to the preset pressure value, recording the pressure value and a corresponding time point thereof if the condition is met, intercepting a part of the first pressure change curve larger than or equal to the preset pressure value according to the recorded pressure value and the time point to obtain the partial pressure change curve, dividing the time segment corresponding to the partial pressure change curve into m time segments according to the preset duration, and obtaining the m pressure change curve segments corresponding to the m time segments.

Then, fitting each pressure change curve segment in the m pressure change curve segments to obtain m fitting straight lines; acquiring the slope of each fitting straight line in the m fitting straight lines to obtain m slope values; specifically, a least square method may be used to fit each of the m pressure change curve segments to obtain m fitted straight lines, then, a slope of each of the m fitted straight lines is calculated, specifically, a straight line equation y=ax+b of each of the m fitted straight lines may be obtained first, where y is a pressure value, x is a time point, a is a slope, and b is an intercept, and m slopes corresponding to the m fitted straight lines may be obtained according to the straight line equation.

Further, determining a target mean square error of the m slope values; the target fire state evaluation value of the battery pack i corresponding to the target mean square error is determined, specifically, the target mean square error of the m slope values may be calculated by using a mean square error formula, then a mapping relationship between a preset mean square error and the fire state evaluation value of the battery pack i may be stored in advance, and the target fire state evaluation value of the battery pack i corresponding to the target mean square error is determined based on the mapping relationship.

Therefore, the partial pressure change curve which is larger than or equal to the preset pressure value in the first pressure change curve is intercepted, the partial pressure change curve is divided into a plurality of segment curves, the target fire state evaluation value of the battery pack is determined according to the slope mean square deviations of the segment curves, the fire state of the battery pack can be evaluated by analyzing the slope mean square deviations of the segment curves, the slope mean square deviations reflect the intensity of the pressure change of the battery pack, the larger slope mean square deviations possibly indicate higher fire risks and require further inspection and processing, in addition, the target fire state evaluation value is determined through the slope mean square deviations, the risk of the battery pack on fire is quantized, and the subjective judgment can be converted into objective indexes through quantifying the fire risks, so that the evaluation result is more accurate and reliable.

Optionally, step S305 may further include the following steps:

b1, acquiring target attribute information of the fire extinguishing pipe;

b2, determining a reference time length corresponding to the target attribute information;

b3, acquiring first internal environment data of the fire extinguishing pipe;

b4, acquiring second internal environment data of the battery pack i;

B5, acquiring external environment data of the battery pack i, wherein the external environment data is internal environment data of the energy storage container;

b6, determining a first influence coefficient corresponding to the first internal environment data;

b7, determining a second influence coefficient corresponding to the second internal environment data;

b8, determining a third influence coefficient corresponding to the external environment data;

and B9, optimizing the reference duration according to the first influence coefficient, the second influence coefficient and the third influence coefficient to obtain the preset duration.

In the embodiment of the present application, the attribute information may include at least one of the following: the material of the fire extinguishing pipe, the diameter of the fire extinguishing pipe, the thickness of the fire extinguishing pipe, etc., are not limited herein, and the environmental data may include at least one of the following: temperature, pressure, humidity, etc., are not limited herein.

In specific implementation, the target attribute information may be a material of the fire extinguishing pipe, the composition material information of the fire extinguishing pipe may be obtained by checking a service manual of the fire extinguishing pipe or querying a fire extinguishing pipe number, a reference time length corresponding to the target attribute information may be determined, specifically, a mapping relationship between the preset attribute information of the fire extinguishing pipe and the reference time length may be stored in advance, the reference time length corresponding to the target attribute information of the fire extinguishing pipe may be determined based on the mapping relationship, and then, the first internal environment data of the fire extinguishing pipe may be obtained; acquiring second internal environment data of the battery pack i; the external environment data of the battery pack i is acquired, and the external environment data is internal environment data of the energy storage container, specifically, temperature, pressure, humidity and the like can be acquired as environment data, for example, a temperature sensor, a pressure sensor, a humidity sensor and the like can be installed in a fire extinguishing pipe, the first environment data in the fire extinguishing pipe can be acquired by using the sensors, and similarly, the second internal environment data of the battery pack i and the external environment data of the battery pack i can also be acquired by using the method.

Further, determining a first influence coefficient corresponding to the first internal environment data; determining a second influence coefficient corresponding to the second internal environment data; determining a third influence coefficient corresponding to the external environment data; optimizing a reference time length according to a first influence coefficient, a second influence coefficient and a third influence coefficient to obtain a preset time length, specifically, storing a mapping relation between preset environmental data and the influence coefficient in advance, respectively obtaining a first influence coefficient corresponding to the first internal environmental data, a second influence coefficient corresponding to the second internal environmental data and a third influence coefficient corresponding to the external environmental data based on the mapping relation, wherein the value range of the first influence coefficient can be-0.3, the value range of the second influence coefficient can be-0.2, the value range of the third influence coefficient can be-0.12, and optimizing the reference time length according to the obtained first influence coefficient, second influence coefficient and third influence coefficient to obtain the preset time length, and specifically, the method comprises the following steps:

preset time period= (1+first influence coefficient) × (1+second influence coefficient) × (1+third influence coefficient) ×reference time period

In this way, the target attribute information of the fire extinguishing pipe is firstly obtained to obtain the reference duration, then, the internal environment data of the fire extinguishing pipe and the internal and external environment data of the battery pack are obtained, three influence coefficients are respectively obtained according to the three environment data, the reference duration is optimized to be the preset duration by using the three influence coefficients, and the optimal preset duration can be determined by analyzing the internal environment data of the fire extinguishing pipe and the internal and external environment data of the battery pack, so that the condition that the acquired pressure data is overlong due to overlong preset duration and the fire condition of the battery pack is difficult to analyze can be avoided, and meanwhile, the condition that the acquired pressure data is too short due to overlong preset duration can be avoided, and the fire condition of the battery pack is not reflected sufficiently.

And S306, when the target fire state evaluation value is larger than a preset fire state evaluation value, starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation.

In the embodiment of the present application, the preset fire state evaluation value may be preset or default;

in specific implementation, when the target fire state evaluation value is greater than the preset fire state evaluation value, the battery pack i can be considered to have a fire at the moment, and the energy storage container can start fire extinguishing equipment in the battery pack i to perform fire extinguishing operation to extinguish the fire of the battery pack i.

Optionally, in step S306, the activating the fire extinguishing device in the battery pack i to perform a fire extinguishing operation may include the following steps:

c1, determining a target control parameter corresponding to the target fire state evaluation value;

and C2, starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation according to the target control parameters.

In an embodiment of the present application, the control parameters may include at least one of the following: the fire extinguishing agent concentration, fire extinguishing agent injection pressure, etc., are not limited herein.

In specific implementation, the target fire state evaluation value can be obtained first, then the target control parameter corresponding to the target fire state evaluation value is determined, specifically, the control parameter can be the fire extinguishing agent injection pressure, the mapping relation between the preset fire state evaluation value and the control parameter can be stored in advance, and the target control parameter corresponding to the target fire state evaluation value is determined based on the mapping relation; then, the fire extinguishing device in the battery pack i is started according to the target control parameter to extinguish the fire of the battery pack i.

In this way, a corresponding target control parameter is determined through the target fire state evaluation value, the fire extinguishing equipment in the battery pack is started according to the target control parameter so as to extinguish the fire of the battery pack, the control parameter can be accurately determined through real-time analysis of the fire state evaluation value, so that the fire extinguishing equipment works in an optimal state, the fire extinguishing effect is improved, in addition, the fire extinguishing equipment in the battery pack is started according to the target control parameter, the automatic starting and the closing of the fire extinguishing equipment in the battery pack can be realized, the manual intervention is reduced, and the risk of human error is reduced.

Optionally, step S306 may further include the following steps:

d1, acquiring position data of the battery pack i;

d2, acquiring pressure data images of a display area of the pressure measuring module of the battery pack i in a second preset time period after the fire extinguishing equipment is started through the camera module, and obtaining a plurality of second pressure data images; each second pressure data image corresponds to one shooting moment;

d3, extracting a pressure value of each shooting moment according to the plurality of second pressure data images to obtain a plurality of second pressure values;

d4, generating a second pressure change curve according to the plurality of second pressure values and shooting time corresponding to each of the plurality of second pressure values; the horizontal axis of the second pressure change curve is time, and the vertical axis is a pressure value;

D5, according to the abnormality degree of the battery pack i corresponding to the second pressure change curve;

d6, determining fire extinguishing abnormal parameters corresponding to the abnormal degrees;

d7, generating fire extinguishing abnormal information according to the fire extinguishing abnormal parameters and the position data;

and D8, sending the fire extinguishing abnormal information to a user.

In this embodiment, the second preset time period may be preset in advance or default, and the abnormal degree may include the following degrees: the degree of abnormality is not limited to a low degree of abnormality and a high degree of abnormality.

In a specific embodiment, the position data of the battery pack i may be obtained first, for example, all battery packs in the energy storage container may be numbered in advance, the number of the battery pack i may be i, and the number may be displayed near the fire extinguishing apparatus, so that the image capturing module may obtain the pressure image of the battery pack i while obtaining the number of the battery pack i, that is, the position data of the battery pack i, and then obtain the pressure data image of the display area of the pressure measuring module of the battery pack i in a second preset time period after the fire extinguishing apparatus is started by the image capturing module, so as to obtain a plurality of second pressure data images; each second pressure data image corresponds to one shooting moment; extracting a pressure value at each shooting moment according to the plurality of second pressure data images to obtain a plurality of second pressure values; generating a second pressure change curve according to the plurality of second pressure values and shooting time corresponding to each of the plurality of second pressure values; the horizontal axis of the second pressure change curve is time, and the vertical axis is a pressure value; the specific implementation may be the same as the way the first pressure profile is generated.

Further, the abnormality degree of the battery pack i corresponding to the second pressure change curve may be determined; determining a fire extinguishing abnormal parameter corresponding to the abnormal degree, specifically, storing a mapping relation between the preset abnormal degree and the abnormal parameter in advance, and determining the fire extinguishing abnormal parameter corresponding to the abnormal degree of the battery pack i based on the mapping relation; generating fire extinguishing abnormal information according to the fire extinguishing abnormal parameters and the position data; and the fire extinguishing abnormal information is sent to the user so as to inform the user that the fire extinguishing operation of the battery pack i is abnormal, and the fire extinguishing needs to be manually assisted.

In this way, by acquiring the position data and the abnormality degree of the battery pack, a fire extinguishing abnormality parameter is obtained according to the abnormality degree, and fire extinguishing abnormality information is generated according to the fire extinguishing abnormality parameter and the position data; the abnormal fire extinguishing information is sent to the user, so that the user can know the abnormal condition and the fire extinguishing requirement of the battery pack, and accordingly make corresponding decisions, such as adjusting parameters of fire extinguishing equipment, taking emergency fire extinguishing measures and the like, and safe fire extinguishing of the battery pack is ensured.

Optionally, step D5, the degree of abnormality of the battery pack i corresponding to the second pressure change curve includes:

E1, predicting target duration required by the fire extinguishment of the battery pack i according to the target fire state evaluation value;

e2, predicting a corresponding target pressure value at a target moment according to the second pressure change curve, wherein the target moment is the moment when the target duration passes after the fire extinguishing equipment is started;

e3, acquiring an actual pressure value of the target moment through the camera module;

e4, determining a target deviation degree between the target pressure value and the actual pressure value;

and E5, determining the abnormality degree of the battery pack i corresponding to the target deviation degree.

In this embodiment, the target duration required for extinguishing the fire in the battery pack i may be predicted according to the target fire state evaluation value, specifically, a mapping relationship between the preset fire state evaluation value and the duration required for extinguishing the fire in the battery pack i may be stored in advance, the target duration required for extinguishing the fire in the battery pack i corresponding to the target fire state evaluation value is determined based on the mapping relationship, and then, the target pressure value corresponding to the target time is predicted according to the second pressure change curve, where the target time is the time when the target duration passes after the fire extinguishing device is started.

It should be noted that the time period corresponding to the second pressure change curve does not include the target time, specifically, the time range recorded by the second pressure change curve is (fire extinguishing apparatus start time, target time), for example, the time period corresponding to the second pressure change curve is (fire extinguishing apparatus start time + (target time—fire extinguishing apparatus start time)/2).

Specifically, a section of the pressure change curve, corresponding to the moment, closest to the current moment in the second pressure change curve is intercepted, so as to obtain a target pressure change curve section, for example, a section of the pressure change curve, corresponding to the moment, closest to the current moment in the second pressure change curve, with a length of 1/3 is intercepted. And then, uniformly sampling the target pressure change curve segment to obtain a plurality of sampling points, fitting the plurality of sampling points to obtain a fitting function, and predicting the target pressure value at the target moment by using the fitting function, wherein the horizontal axis of the fitting function is time, the vertical axis of the fitting function is pressure value.

Further, when the current time reaches the target time, image data of the target time can be acquired through the image capturing module, a corresponding pressure value, namely an actual pressure value, is acquired by using the image data, and then the target deviation degree between the target pressure value and the actual pressure value is determined according to the following formula, specifically as follows:

target deviation= |target pressure value-actual pressure value|/actual pressure value

Further, the corresponding target deviation degree may be obtained based on the above formula, and a mapping relationship between the preset deviation degree and the abnormality degree may be stored in advance, and the abnormality degree of the battery pack i corresponding to the target deviation degree may be determined based on the mapping relationship, for example, when the target deviation degree is less than 10%, the abnormality degree of the corresponding battery pack i is no abnormality degree, when the target deviation degree is in the range of 10% -30%, the abnormality degree of the corresponding battery pack i is low, and when the target deviation degree is higher than 30%, the abnormality degree of the corresponding battery pack i is high.

In this way, the target duration required by the extinguishment of the battery i is predicted according to the target fire state evaluation value, the corresponding target pressure value at the target moment is predicted, the actual pressure value at the target moment is acquired through the camera module, the target deviation degree between the target pressure value and the actual pressure value is determined, the abnormality degree of the battery pack i is obtained according to the target deviation degree, the abnormality degree of the battery pack can be quantified through determining the target deviation degree between the target pressure value and the actual pressure value, and the safety condition of the battery pack is helped to be judged by a user.

it can be seen that the fire protection method based on the energy storage container described in the embodiments of the present application is applied to the energy storage container, and the energy storage container includes: make a video recording module and battery package group, battery package group includes at least one battery package, and the inside of each battery package all disposes a fire extinguishing apparatus, and fire extinguishing apparatus includes: the method comprises the steps that the fire extinguishing pipe and the pressure measuring module are arranged outside a shell of the battery pack, and the method comprises the following steps: acquiring first pressure data images of a display area of a pressure measuring module of a battery pack i in a first preset time period before the current moment through a camera module, and obtaining a plurality of first pressure data images, wherein each first pressure data image corresponds to one shooting moment; the battery pack i is any battery pack of the at least one battery pack; extracting a pressure value at each shooting moment according to the plurality of first pressure data images to obtain a plurality of first pressure values; generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each of the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value; detecting whether a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve; when a pressure value which is larger than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve; when the target fire state evaluation value is larger than the preset fire state evaluation value, starting fire extinguishing equipment in the battery pack i to perform fire extinguishing operation; on the one hand, the display image of the pressure measuring module is recorded through the camera module, so that the pressure condition of the battery pack can be known in real time, a high-risk area in the energy storage container can be rapidly and accurately determined, and meanwhile, the labor can be saved; on the other hand, when the pressure value larger than or equal to the preset pressure value exists in the first pressure change curve, further analysis is carried out on the battery pack, the target fire state evaluation value of the battery pack is determined according to the first pressure change curve, the fire can be evaluated and controlled, if the target fire state evaluation value is larger than the preset fire state evaluation value, namely, the condition that the fire is serious or in a dangerous state is indicated, the fire extinguishing equipment in the battery pack can be started to carry out the fire extinguishing operation on the fire extinguishing equipment, and the fire is effectively controlled; in summary, by implementing the embodiment of the application, the fire disaster area in the energy storage container can be accurately determined, and fixed-point fire extinguishment is realized.

In accordance with the above embodiments, please refer to fig. 4, fig. 4 is a block diagram illustrating functional units of a fire protection device 400 based on an energy storage container according to an embodiment of the present application. The fire safety protection device 400 based on the energy storage container shown in fig. 4 is applied to the energy storage container, and the energy storage container comprises: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: fire extinguishing pipe and pressure measurement module, pressure measurement module's display area sets up outside the casing of battery package, fire protection safety device 400 based on energy storage container includes: a detection unit 401, a control unit 402, a fire extinguishing unit 403; wherein,

the detecting unit 401 is configured to obtain, by using the camera module, a plurality of pressure data images of a display area of the pressure measuring module of the battery pack i in a first preset time period before a current moment, where each pressure data image corresponds to a shooting moment; the battery pack i is any battery pack of the at least one battery pack;

the control unit 402 is configured to extract a pressure value at each shooting time according to the plurality of pressure data images, so as to obtain a plurality of first pressure values; generating a first pressure change curve according to the plurality of first pressure values and shooting time corresponding to each first pressure value in the plurality of first pressure values; the horizontal axis of the first pressure change curve is time, and the vertical axis is a pressure value; detecting whether a pressure value greater than or equal to a preset pressure value exists in the pressure values corresponding to the first pressure change curve; when a pressure value larger than or equal to the preset pressure value exists in the pressure values corresponding to the first pressure change curve, determining a target fire state evaluation value of the battery pack i according to the first pressure change curve;

The fire extinguishing unit 403 is configured to start the fire extinguishing device in the battery pack i to perform a fire extinguishing operation when the target fire state evaluation value is greater than a preset fire state evaluation value.

Optionally, the fire safety protection device 400 based on the energy storage container is specifically further used for:

and when the pressure value which is larger than or equal to the preset pressure value does not exist in the pressure values corresponding to the first pressure change curve, determining that the battery pack i is in a fire-free state.

Optionally, the determining the target fire state evaluation value of the battery pack i according to the first pressure change curve includes:

intercepting a partial pressure change curve with the pressure value larger than or equal to the preset pressure value from the first pressure change curve;

dividing the partial pressure change curve into m segments to obtain m pressure change curve segments, wherein the duration of each pressure change curve segment is a preset duration, and m is an integer greater than 5;

fitting each pressure change curve segment in the m pressure change curve segments to obtain m fitting straight lines;

acquiring the slope of each fitting straight line in the m fitting straight lines to obtain m slope values;

determining a target mean square error of the m slope values;

And determining a target fire state evaluation value of the battery pack i corresponding to the target mean square error.

acquiring target attribute information of the fire extinguishing pipe;

determining a reference time length corresponding to the target attribute information;

acquiring first internal environment data of the fire extinguishing pipe;

acquiring second internal environment data of the battery pack i;

acquiring external environment data of the battery pack i, wherein the external environment data is internal environment data of the energy storage container;

determining a first influence coefficient corresponding to the first internal environment data;

determining a second influence coefficient corresponding to the second internal environment data;

determining a third influence coefficient corresponding to the external environment data;

and optimizing the reference duration according to the first influence coefficient, the second influence coefficient and the third influence coefficient to obtain the preset duration.

Optionally, in terms of said activating said fire extinguishing apparatus in said battery pack i for fire extinguishing operation, said fire extinguishing unit 403 is specifically configured to:

determining a target control parameter corresponding to the target fire state evaluation value;

And starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation according to the target control parameters.

acquiring position data of the battery pack i;

acquiring pressure data images of a display area of the pressure measuring module of the battery pack i in a second preset time period after the fire extinguishing equipment is started through the camera module, and obtaining a plurality of second pressure data images; each second pressure data image corresponds to one shooting moment;

extracting a pressure value at each shooting moment according to the plurality of second pressure data images to obtain a plurality of second pressure values;

generating a second pressure change curve according to the plurality of second pressure values and shooting time corresponding to each second pressure value in the plurality of second pressure values; the horizontal axis of the second pressure change curve is time, and the vertical axis is a pressure value;

according to the abnormality degree of the battery pack i corresponding to the second pressure change curve;

determining fire extinguishing abnormal parameters corresponding to the abnormal degrees;

generating fire extinguishing abnormal information according to the fire extinguishing abnormal parameters and the position data;

And sending the fire extinguishing abnormal information to a user.

Optionally, in terms of the degree of abnormality of the battery pack i corresponding to the second pressure change curve, the fire safety protection device 400 based on an energy storage container is further specifically configured to:

predicting target duration required by the extinguishment of the battery pack i according to the target fire state evaluation value;

predicting a corresponding target pressure value at a target time according to the second pressure change curve, wherein the target time is the time when the target duration passes after the fire extinguishing equipment is started;

acquiring an actual pressure value of the target moment through the camera module;

determining a target degree of deviation between the target pressure value and the actual pressure value;

and determining the abnormality degree of the battery pack i corresponding to the target deviation degree.

It can be appreciated that the functions of each program module of the fire protection device 400 based on the energy storage container according to the present embodiment may be specifically implemented according to the method in the above method embodiment, and the specific implementation process may refer to the relevant description of the above method embodiment, which is not repeated herein.

In accordance with the foregoing embodiments, please refer to fig. 5, fig. 5 is a schematic structural diagram of an energy storage container according to an embodiment of the present application. As shown in fig. 5, the energy storage container includes a processor, a memory, a communication interface, and one or more programs for application to the energy storage container, the energy storage container including: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: the display area of the pressure measuring module is arranged outside the shell of the battery pack; the one or more programs are stored in the memory and configured to be executed by the processor, and in an embodiment of the present application, the program includes instructions for performing the steps of:

Optionally, the above program further comprises instructions for performing the steps of:

Optionally, in the determining the target fire state evaluation value of the battery pack i according to the first pressure change curve, the above-mentioned program further includes instructions for performing the following steps:

determining a target mean square error of the m slope values;

Acquiring target attribute information of the fire extinguishing pipe;

acquiring first internal environment data of the fire extinguishing pipe;

acquiring second internal environment data of the battery pack i;

Optionally, in said activating said fire extinguishing device in said battery pack i for fire extinguishing operation, the above procedure further comprises instructions for:

Acquiring position data of the battery pack i;

and sending the fire extinguishing abnormal information to a user.

Optionally, in terms of the degree of abnormality of the battery pack i corresponding to the second pressure change curve, the above program further includes instructions for performing the steps of:

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims

1. A fire protection method based on an energy storage container, characterized in that the method is applied to an energy storage container, the energy storage container comprises: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: the method comprises the steps of setting a display area of the pressure measurement module outside a shell of the battery pack, and the method comprises the following steps:

when the target fire state evaluation value is larger than a preset fire state evaluation value, starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation;

wherein the determining the target fire state evaluation value of the battery pack i according to the first pressure change curve includes:

Determining a target mean square error of the m slope values;

determining a target fire state evaluation value of the battery pack i corresponding to the target mean square error;

wherein the method further comprises:

acquiring target attribute information of the fire extinguishing pipe;

acquiring first internal environment data of the fire extinguishing pipe;

acquiring second internal environment data of the battery pack i;

optimizing the reference duration according to the first influence coefficient, the second influence coefficient and the third influence coefficient to obtain the preset duration, wherein the optimization process is specifically as follows:

preset time period= (1+first influence coefficient) × (1+second influence coefficient) × (1+third influence coefficient) ×reference time period;

wherein the method further comprises:

acquiring position data of the battery pack i;

transmitting the fire extinguishing abnormal information to a user;

wherein the degree of abnormality of the battery pack i corresponding to the second pressure change curve includes:

2. The method of claim 1, wherein the method further comprises:

3. The method according to claim 1 or 2, wherein said activating said fire extinguishing device in said battery pack i for fire extinguishing operation comprises:

4. Fire protection device based on energy storage container, characterized in that is applied to the energy storage container, the energy storage container includes: the battery pack group includes at least one battery pack, and the inside of each battery pack all disposes a fire extinguishing apparatus, fire extinguishing apparatus includes: fire extinguishing pipe and pressure measurement module, pressure measurement module's display area sets up outside the casing of battery package, fire control safety arrangement based on energy storage container includes: the fire extinguishing system comprises a detection unit, a control unit and a fire extinguishing unit; wherein,

the fire extinguishing unit is used for starting the fire extinguishing equipment in the battery pack i to perform fire extinguishing operation when the target fire state evaluation value is larger than a preset fire state evaluation value;

determining a target mean square error of the m slope values;

wherein, fire control safety device based on energy storage container still is used for:

acquiring target attribute information of the fire extinguishing pipe;

acquiring first internal environment data of the fire extinguishing pipe;

acquiring second internal environment data of the battery pack i;

acquiring position data of the battery pack i;

transmitting the fire extinguishing abnormal information to a user;

5. An energy storage container comprising a processor, a memory, a communication interface, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method of any of claims 1-3 when the computer program is executed.

6. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program, when run, controls a device in which the computer readable storage medium is located to perform the method according to any one of claims 1-3.