Intelligent fire control method, device and equipment for container energy storage system and medium

Abstract

The invention provides an intelligent fire control method, device, equipment and medium for a container energy storage system, and relates to the technical field of energy storage control, and the method comprises the steps: collecting the CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in a battery cabin in real time; calculating a temperature rise rate based on the temperature value; based on the CO concentration, the H2 concentration, the VOC concentration, the smoke concentration, the temperature value and the temperature rise rate, the fire hazard grade is judged; based on the fire hazard grade and the SOC value, the first-round injection dose of the fire extinguisher is determined; performing charging and discharging power adjustment based on the SOC value; and starting a fire extinguishing agent to be sprayed for several times based on the fire hazard grade. In the mode, the situation that the battery is out of control due to overhigh internal temperature and cannot reverse is avoided, and the ignition reburning rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage control, in particular to a container energy storage system intelligent fire control method, device, equipment and medium. BACKGROUND

[0002] The container energy storage system generally adopts a full-submersion gas fire extinguishing scheme, relies on a single temperature threshold, and has a situation of excessively high internal battery temperature when the threshold is reached, and a fixed fire extinguishing agent dose, which increases the fire rekindling rate. SUMMARY

[0003] Therefore, the present application aims to provide a container energy storage system intelligent fire control method, device, equipment and medium, which avoids the situation of excessively high internal battery temperature and heat runaway that cannot be reversed, and reduces the fire rekindling rate.

[0004] In a first aspect, the present application provides a container energy storage system intelligent fire control method, comprising: collecting CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in the battery cabin in real time; calculating the temperature rise rate based on the temperature value; determining the fire class based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate; determining the first round injection dose of the fire extinguisher based on the fire class and the SOC value; performing charge and discharge power adjustment based on the SOC value; and starting the fire extinguishing agent for multiple times of injection based on the fire class.

[0005] In a preferred embodiment of the present application, the determination of the fire class based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate comprises: determining a first-level alarm when the temperature rise rate is greater than or equal to 10℃ / min or the VOC is greater than or equal to 100ppm; determining a second-level alarm when the CO is greater than or equal to 200ppm and the temperature rise rate is greater than or equal to 15℃ / min; and determining a third-level alarm when the temperature rise rate is greater than or equal to 20℃ / min or the temperature is greater than or equal to 65℃, wherein the determination priority of ΔT greater than or equal to 20℃ / min is higher than that of the temperature absolute value threshold.

[0006] In a preferred embodiment of the present application, the determination of the first round injection dose of the fire extinguisher based on the fire class and the SOC value comprises: calculating the first round injection dose Q by the following formula: Q=Q0×[1+k×(SOC-50%)]; wherein Q0 is a reference dose, which is preset based on the battery capacity; k is a correction coefficient, which has a value range of 0.4-0.6; and when the SOC is less than or equal to 50%, Q=Q0×[1-0.3×(50%-SOC)] is taken.

[0007] In a preferred embodiment of the present invention, the above-mentioned charge and discharge power regulation based on the SOC value includes: if SOC>80%, cutting off the energy storage converter charge and discharge circuit within 1 second; if 30%≤SOC≤80%, linearly reducing the power according to the formula P=P0×[1-(SOC-30%) / 50%]; if SOC<30%, maintaining the current power operation and starting the high-frequency monitoring mode.

[0008] In a preferred embodiment of the present invention, the above method also includes: when the fire level is ≥ level 2, adjusting the cooling power of the water cooling system based on the temperature rise rate: if the temperature rise rate is ≥15℃ / min, starting the maximum cooling power; if the temperature rise rate is <15℃ / min, starting 50% cooling power.

[0009] In a preferred embodiment of the present invention, the above-mentioned sensors are arranged as follows: the temperature sensor and the VOC sensor are arranged on the top of the battery module; the CO sensor and the smoke sensor are arranged on the top of the battery compartment channel; and the H2 sensor is arranged at the bottom of the battery compartment.

[0010] In a preferred embodiment of the present invention, the method further includes: after the first spraying, spraying 10% of the first round dose Q every 30 seconds until any of the following conditions is met: ΔT < 5°C / min and the CO concentration decrease rate ≥ 40%; the total spraying amount reaches the safety upper limit (2×Q).

[0011] In a second aspect, an embodiment of the present invention further provides an intelligent fire control device for a container energy storage system, comprising: a data acquisition module for real-time acquisition of CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in the battery compartment; a temperature rise rate calculation module for calculating the temperature rise rate based on the temperature value; a fire level determination module for determining the fire level based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate; a fire extinguisher first-round injection dose determination module for determining the fire extinguisher first-round injection dose based on the fire level and SOC value; a charge and discharge power adjustment module for performing charge and discharge power adjustment based on the SOC value; and a fire extinguishing agent phased spraying module for initiating the fire extinguishing agent phased spraying based on the fire level.

[0012] In a third aspect, an embodiment of the present invention further provides an electronic device comprising a processor and a memory, wherein the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the intelligent fire control method for the container energy storage system of the first aspect mentioned above.

[0013] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the intelligent fire control method for the container energy storage system of the first aspect mentioned above.

[0014] The embodiments of the present invention bring the following beneficial effects:

[0015] Embodiments of the present invention provide an intelligent fire control method, device, equipment, and medium for a container energy storage system. These methods collect real-time CO, H2, VOC, smoke, and temperature concentrations within the battery compartment; calculate the temperature rise rate based on these temperature values; determine the fire severity based on these CO, H2, VOC, smoke, temperature, and temperature rise rate; determine the initial extinguisher dose based on the fire severity and SOC value; adjust the charge and discharge power based on the SOC value; and initiate the phased release of the fire extinguishing agent based on the fire severity. This approach avoids irreversible thermal runaway caused by excessive internal battery temperatures and reduces the chance of fires re-igniting.

[0016] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by practicing the above-mentioned technology of the present disclosure.

[0017] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A flow chart of an intelligent fire protection control method for a container energy storage system provided by an embodiment of the present invention;

[0020] Figure 2 A flow chart of another intelligent fire protection control method for a container energy storage system provided by an embodiment of the present invention;

[0021] Figure 3 A schematic structural diagram of an intelligent fire control device for a container energy storage system provided by an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described below in detail with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] The container energy storage system generally adopts a full-submersion gas fire extinguishing scheme, relies on a single temperature threshold, and has a situation that the internal temperature of the battery is too high when the threshold is reached, and the fixed fire extinguishing agent dose increases the fire rekindling.

[0025] Therefore, the container energy storage system intelligent fire control method, device, equipment and medium provided by the embodiments of the present application can collect the CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in the battery cabin in real time, calculate the temperature rise rate based on the temperature value, determine the fire grade based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate, determine the first round of injection dose of the fire extinguisher based on the fire grade and SOC value, perform charge and discharge power adjustment based on the SOC value, and start the fire extinguishing agent for multiple times of injection based on the fire grade. In this way, the situation that the internal temperature of the battery is too high and cannot be reversed is avoided, and the fire rekindling rate is reduced.

[0026] In order to facilitate the understanding of the present embodiment, first, a container energy storage system intelligent fire control method disclosed by the present embodiment will be described in detail.

[0027] Embodiment 1

[0028] The present embodiment provides a container energy storage system intelligent fire control method, Figure 1 The flowchart of the container energy storage system intelligent fire control method provided by the present embodiment is shown in FIG. 1. As shown in the figure, the container energy storage system intelligent fire control method can include the following steps: Figure 1

[0029] Step S101, collecting the CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in the battery cabin in real time.

[0030] Among them, CO (electrolyte decomposition marker), H2 (lithium precipitation reaction), VOC (electrolyte volatilization), smoke, temperature are monitored at the same time, which avoids the problem of high false negative rate of a single sensor.

[0031] Step S102, calculating the temperature rise rate based on the temperature value.

[0032] Among them, the temperature change can be calculated periodically to avoid the situation that a single threshold cannot early warn the heat loss control.​

[0033] Step S103, determining the fire grade based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate.

[0034] Among them, the fire grade is divided into two kinds, one is to carry out fire extinguishing, one is not to carry out fire extinguishing. The case of needing to carry out fire extinguishing is also divided into single time can solve the fire extinguishing and multiple times can solve the fire extinguishing.

[0035] Step S104, determining the first round of fire extinguisher injection dose based on the fire grade and SOC value.

[0036] Among them, the dose-SOC nonlinear mapping can be established, and the dose is increased when the SOC is high, and the dose is reduced when the SOC is low.

[0037] Step S105, performing charge and discharge power adjustment based on the SOC value.

[0038] Among them, it can be controlled in segments to avoid the influence of fire alarm on the continuity of power grid frequency modulation.

[0039] Step S106, starting the fire extinguishing agent to spray in multiple times based on the fire grade.

[0040] Among them, when single time spraying cannot suppress deep reaction, multiple times spraying is carried out.

[0041] The container energy storage system intelligent fire control method provided by the embodiment of the application can realize real-time collection of CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature value in the battery cabin; calculate the temperature rise rate based on the temperature value; determine the fire grade based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate; determine the first round of fire extinguisher injection dose based on the fire grade and SOC value; perform charge and discharge power adjustment based on the SOC value; start the fire extinguishing agent to spray in multiple times based on the fire grade. In this way, the situation that the battery internal temperature is too high and the thermal runaway cannot be reversed is avoided, and the fire recurrence rate is reduced.

[0042] Embodiment 2

[0043] The embodiment of the application also provides another container energy storage system intelligent fire control method; the method is realized on the basis of the above-mentioned embodiment method.

[0044] Figure 2 The flow chart of another container energy storage system intelligent fire control method provided by the embodiment of the application is shown in Figure 2 The container energy storage system intelligent fire control method can include the following steps:

[0045] Step S201 , collecting CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature values ​​in the battery compartment in real time.

[0046] Detection can be performed using sensors. The sensor layout can be: temperature sensor and VOC sensor are placed on the top of the battery module; CO sensor and smoke sensor are placed on the top of the battery compartment channel; H2 sensor is placed on the bottom of the battery compartment.

[0047] Step S202: Calculate the temperature rise rate based on the temperature value.

[0048] Among them, the temperature rise rate corresponds to the warning situation and avoids the inability to warn of sudden thermal runaway under a single threshold.

[0049] Step S203 , determining the fire level based on CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate.

[0050] Specifically, the fire level is determined based on CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate, which may include: when the temperature rise rate is ≥10℃ / min or VOC ≥100ppm, it is determined as a level 1 alarm; when CO ≥200ppm and the temperature rise rate is ≥15℃ / min, it is determined as a level 2 alarm; when the temperature rise rate is ≥20℃ / min or the temperature is ≥65℃, it is determined as a level 3 alarm, among which ΔT ≥20℃ / min has a higher priority than the absolute temperature threshold.

[0051] Step S204: Determine the first-round spraying dosage of the fire extinguisher based on the fire level and the SOC value.

[0052] Specifically, based on the fire level and SOC value, determining the first-round injection dose of the fire extinguisher can include: calculating the first-round injection dose Q by the following formula: Q = Q0 × [1 + k × (SOC-50%)]; wherein, Q0 is the reference dose, which is preset based on the battery capacity; k is the correction coefficient, with a value range of 0.4 to 0.6; when SOC≤50%, take Q = Q0 × [1-0.3 × (50%-SOC)].

[0053] Step S205 , performing charge and discharge power adjustment based on the SOC value.

[0054] Specifically, the charging and discharging power adjustment is performed based on the SOC value, which may include: if SOC>80%, cutting off the energy storage converter charging and discharging circuit within 1 second; if 30%≤SOC≤80%, linearly reducing the power according to the formula P=P0×[1-(SOC-30%) / 50%]; if SOC<30%, maintaining the current power operation and starting the high-frequency monitoring mode.

[0055] Step S206: Start the fire extinguishing agent and spray it in batches based on the fire level.

[0056] After the first spraying, 10% of the first round dose Q is sprayed every 30 seconds until any of the following conditions is met: ΔT < 5°C / min and the CO concentration decrease rate is ≥ 40%; the total spraying volume reaches the safety upper limit (2×Q).

[0057] Step S207: When the fire level is ≥ level 2, the cooling power of the water cooling system is adjusted based on the temperature rise rate.

[0058] If the temperature rise rate is ≥15°C / min, the maximum cooling power is activated; if the temperature rise rate is <15°C / min, 50% cooling power is activated.

[0059] Example 3

[0060] Corresponding to the above method embodiment, the embodiment of the present invention provides an intelligent fire control device for a container energy storage system, Figure 3 A schematic diagram of the structure of an intelligent fire control device for a container energy storage system provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the intelligent fire control device of the container energy storage system may include:

[0061] The data acquisition module 301 is used to collect the CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature values ​​in the battery compartment in real time.

[0062] The temperature rise rate calculation module 302 is used to calculate the temperature rise rate based on the temperature value.

[0063] The fire level determination module 303 is used to determine the fire level based on CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate.

[0064] The fire extinguisher first-round spray dosage determination module 304 is used to determine the fire extinguisher first-round spray dosage based on the fire level and the SOC value.

[0065] The charge and discharge power adjustment module 305 is configured to adjust the charge and discharge power based on the SOC value.

[0066] The fire extinguishing agent phased spraying module 306 is used to start the fire extinguishing agent phased spraying based on the fire level.

[0067] The intelligent fire control device for a container energy storage system provided in an embodiment of the present invention can collect real-time CO concentration, H2 concentration, VOC concentration, smoke concentration, and temperature values ​​within the battery compartment; calculate the temperature rise rate based on these values; determine the fire severity based on these CO concentrations, H2 concentrations, VOC concentrations, smoke concentrations, temperature values, and temperature rise rates; determine the initial extinguisher dose based on the fire severity and SOC value; adjust the charge and discharge power based on the SOC value; and initiate the phased release of the fire extinguishing agent based on the fire severity. This approach avoids irreversible thermal runaway caused by excessive internal battery temperatures and reduces the re-ignition rate of fires.

[0068] In some embodiments, the temperature rise rate calculation module is also used to determine a level 1 alarm when the temperature rise rate is ≥10°C / min or VOC ≥100ppm; to determine a level 2 alarm when CO ≥200ppm and the temperature rise rate is ≥15°C / min; and to determine a level 3 alarm when the temperature rise rate is ≥20°C / min or the temperature is ≥65°C, where the determination priority of ΔT ≥20°C / min is higher than the temperature absolute value threshold.

[0069] In some embodiments, the fire extinguisher first-round injection dosage determination module is also used to calculate the first-round injection dosage Q using the following formula: Q = Q0 × [1 + k × (SOC-50%)]; wherein Q0 is a reference dosage, preset based on the battery capacity; k is a correction coefficient, ranging from 0.4 to 0.6; when SOC ≤ 50%, Q = Q0 × [1-0.3 × (50%-SOC)].

[0070] In some embodiments, the charge and discharge power regulation module is also used to cut off the charge and discharge circuit of the energy storage inverter within 1 second if the SOC is greater than 80%; if 30% ≤ SOC ≤ 80%, linearly reduce the power according to the formula P = P0 × [1-(SOC-30%) / 50%]; if SOC is less than 30%, maintain the current power operation and start the high-frequency monitoring mode.

[0071] In some embodiments, the charge and discharge power regulation module is also used to adjust the cooling power of the water cooling system based on the temperature rise rate when the fire level is ≥ level 2: if the temperature rise rate is ≥15℃ / min, start the maximum cooling power; if the temperature rise rate is <15℃ / min, start 50% cooling power.

[0072] In some embodiments, the temperature sensor and the VOC sensor are arranged at the top of the battery module; the CO sensor and the smoke sensor are arranged at the top of the battery compartment channel; and the H2 sensor is arranged at the bottom of the battery compartment.

[0073] In some embodiments, the fire extinguishing agent phased spraying module is further used to supplement the spraying of 10% of the first round dose Q every 30 seconds after the first spraying until any of the following conditions is met: ΔT < 5°C / min and the CO concentration decrease rate ≥ 40%; the total spraying volume reaches the safety upper limit (2×Q).

[0074] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those in the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference can be made to the corresponding content in the aforementioned method embodiment.

[0075] Example 4

[0076] The embodiment of the present invention also provides an electronic device for running the above container energy storage system intelligent fire control method; see Figure 4 The structure diagram of an electronic device shown in the figure includes a memory 400 and a processor 401, wherein the memory 400 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor 401 to implement the above-mentioned container energy storage system intelligent fire control method.

[0077] Furthermore, Figure 4 The electronic device shown further includes a bus 402 and a communication interface 403 , and the processor 401 , the communication interface 403 and the memory 400 are connected via the bus 402 .

[0078] The memory 400 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The communication connection between the system network element and at least one other network element is achieved through at least one communication interface 403 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 402 may be an ISA bus, a PCI bus, or an 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 bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0079] The processor 401 can be an integrated circuit chip having a signal processing capability. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor 401 or the instruction in the form of software. The processor 401 described above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiment of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiment of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium in the art. The storage medium is located in the memory 400, and the processor 401 reads the information in the memory 400, and combines the hardware to complete the steps of the method of the above embodiment.

[0080] The embodiment of the present application also provides a computer readable storage medium, the computer readable storage medium stores computer executable instructions, when the computer executable instructions are called and executed by the processor, the computer executable instructions cause the processor to implement the above container energy storage system intelligent fire control method, and the specific implementation can be referred to the method embodiment, and will not be repeated here.

[0081] The computer program product for implementing the container energy storage system intelligent fire control method provided by the embodiment of the present application includes a computer readable storage medium storing non-volatile program codes executable by the processor. The instructions included in the program codes can be used to execute the method described in the foregoing method embodiment, and the specific implementation can be referred to the method embodiment, and will not be repeated here.

[0082] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0083] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0084] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0085] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0086] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0087] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A container energy storage system intelligent fire control method, characterized in that: The method comprises: Real-time collection of CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature values ​​in the battery compartment; calculating a temperature rise rate based on the temperature value; Determine the fire level based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate; Determining the first-round spray dosage of the fire extinguisher based on the fire level and the SOC value; performing charge and discharge power regulation based on the SOC value; The fire extinguishing agent is activated and sprayed in stages based on the fire level.

2. The method according to claim 1, characterized in that The fire level is determined based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value and temperature rise rate, including: When the temperature rise rate is ≥10℃ / min or VOC ≥100ppm, it is judged as Level 1 alarm; When CO ≥ 200ppm and the temperature rise rate ≥ 15℃ / min, it is judged as a Level 2 alarm; When the temperature rise rate is ≥20℃ / min or the temperature is ≥65℃, it is judged as a Level 3 alarm. Among them, the judgment priority of ΔT ≥20℃ / min is higher than the absolute temperature threshold.

3. The method according to claim 2, characterized in that The determining of the first-round spraying dosage of the fire extinguisher based on the fire level and the SOC value includes: The formula for calculating the first-round injection dose Q is: Q = Q0 × [1 + k × (SOC-50%)]; where Q0 is the reference dose, which is preset based on the battery capacity; k is the correction coefficient, which ranges from 0.4 to 0.6; when SOC ≤ 50%, Q = Q0 × [1-0.3 × (50%-SOC)].

4. The method according to claim 2, characterized in that The performing charge and discharge power regulation based on the SOC value includes: If SOC>80%, the energy storage converter charging and discharging circuit will be cut off within 1 second; If 30%≤SOC≤80%, linearly reduce power according to the formula P=P0×[1-(SOC-30%) / 50%]; If SOC is less than 30%, the current power operation is maintained and the high-frequency monitoring mode is started.

5. The method according to claim 4, characterized in that The method further includes: when the fire level is ≥ level 2, adjusting the cooling power of the water cooling system based on the temperature rise rate: If the temperature rise rate is ≥15℃ / min, start the maximum cooling power; If the temperature rise rate is less than 15℃ / min, start 50% cooling power.

6. The method according to claim 5, characterized in that The sensor arrangement is as follows: The temperature sensor and VOC sensor are placed on the top of the battery module; The CO sensor and smoke sensor are placed on the top of the battery compartment channel; The H2 sensor is located at the bottom of the battery compartment.

7. The method according to claim 6, characterized in that The method further comprises: After the first spray, 10% of the first round dose Q is sprayed every 30 seconds until any of the following conditions is met: ΔT < 5°C / min and the CO concentration decrease rate ≥ 40%; the total spray volume reaches the safety upper limit (2×Q).

8. A container energy storage system intelligent fire control method, characterized in that: The method comprises: Data acquisition module, used to collect real-time CO concentration, H2 concentration, VOC concentration, smoke concentration and temperature values ​​in the battery compartment; a temperature rise rate calculation module, configured to calculate the temperature rise rate based on the temperature value; A fire level determination module, configured to determine the fire level based on the CO concentration, H2 concentration, VOC concentration, smoke concentration, temperature value, and temperature rise rate; a fire extinguisher first-round spray dosage determination module, configured to determine the fire extinguisher first-round spray dosage based on the fire level and the SOC value; a charge and discharge power regulation module, configured to perform charge and discharge power regulation based on the SOC value; The fire extinguishing agent phased spraying module is used to start the fire extinguishing agent phased spraying based on the fire level.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the intelligent fire protection control method for the container energy storage system according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are called and executed by the processor, the computer-executable instructions prompt the processor to implement the intelligent fire control method for the container energy storage system according to any one of claims 1 to 7.

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