Active fire management system and method

Abstract

The application discloses an active fire-fighting processing system and method. The system comprises an energy storage battery module, a battery management module and a fire-fighting module; the energy storage battery module comprises a plurality of battery pack units; each battery pack unit comprises a battery cluster management unit and a plurality of single batteries, a temperature detection resistor and a gas sensor; the battery cluster management unit detects factory state information of each single battery, carries out outlier analysis on the factory state information of each single battery to determine abnormal single battery number information, and sends the outlier single battery number information to the battery management module; the battery cluster management unit is also used for detecting the running state of each single battery in a running state, and sending the running state information of each single battery to the battery management module; the battery management module outputs different active fire-fighting request instructions to the fire-fighting module according to the outlier single battery number information, temperature state level information and smoke information; and the fire-fighting module starts fire-fighting according to the different active fire-fighting request instructions.

Description

Technical Field

[0001] The present invention relates to the field of active fire protection technology, and more particularly to an active fire protection system and method. Background Technology

[0002] The transformation of energy development directly impacts the development of social production, and developing green energy has become a consensus among all humankind. Energy storage technology has various applications on the generation, grid, and user sides, providing functions such as capacity support, peak shaving and valley filling, peak and frequency regulation, emergency / uninterruptible power supply, and improved power quality, supporting the stable operation and economic benefits of the power system. There are three main application scenarios for energy storage battery systems: 1. Energy storage power stations: These are generally large energy storage units, often multiple units placed together, with a single unit capacity of 2.5 MWh or more, some even reaching 10 MWh; 2. Industrial and commercial energy storage: This is generally used by companies or industrial parks, with a single unit typically ranging from 150 kWh to 400 kWh, often placed in areas with high population density such as factories; 3. Residential energy storage: This is used in residential areas, with a single unit around 5 kWh, often placed indoors. Therefore, from the perspective of property and personal safety, the safety of energy storage systems is of paramount importance.

[0003] Currently, lithium batteries are the primary energy storage medium in energy storage systems. However, thermal runaway of lithium batteries can lead to serious consequences. Therefore, accurately and proactively predicting the status of each battery and sending alarm information to the fire protection system to proactively request appropriate measures from the fire department can greatly improve the safety of the system.

[0004] Currently, fire protection technology mainly relies on temperature and smoke detection. However, smoke and flames only appear after thermal runaway has begun, by which time the optimal time for extinguishing the fire has already passed. Furthermore, current fire protection systems using temperature and smoke detection technologies are prone to false alarms because the detection equipment may malfunction during the detection process, even when the battery itself is functioning correctly. This results in low reliability of fire protection systems. Summary of the Invention

[0005] This invention provides an active fire suppression system and method to accurately determine a battery pack that is about to experience thermal runaway based on various conditions, promptly notify the fire suppression system to activate, and avoid activating the fire suppression system only after thermal runaway has occurred.

[0006] In a first aspect, embodiments of the present invention provide an active fire-fighting system, which includes: an energy storage battery module, a battery management module, and a fire-fighting module;

[0007] The energy storage battery module includes several battery pack units; each battery pack unit includes a battery cluster management unit, several individual batteries, several temperature detection resistors, and several gas sensors.

[0008] The battery cluster management unit is used to detect the factory status information of each individual battery in the battery pack unit, perform outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and send the outlier individual battery number information to the battery management module.

[0009] It is also used to detect the operating status of each individual battery cell in the battery pack unit during operation, and send the operating status information of each individual battery cell to the battery management module; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor and the smoke status information detected by the gas sensor;

[0010] Each of the battery cluster management units is communicatively connected to the battery management module; the battery management module is used to output a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information and the temperature status level information; and also to output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the temperature status level information and the smoke information.

[0011] The fire protection module is communicatively connected to the battery pack management system; the fire protection module is used to activate the fire protection system according to the first active fire protection request instruction and the second active fire protection request instruction.

[0012] Optionally, the energy storage battery module further includes several smoke detectors and several temperature detectors; the smoke detectors and the temperature detectors are disposed on the battery pack unit;

[0013] The battery management module is also used to receive battery pack temperature information detected by each of the smoke detectors and to receive smoke information inside the battery pack detected by each of the temperature detectors; it is also used to send the battery pack temperature information and the smoke information inside the battery pack to the fire protection module.

[0014] The fire protection module is used to determine battery pack alarm information and abnormal battery pack number information based on the received battery pack temperature information and smoke information inside the battery pack, and send the battery pack alarm information and abnormal battery pack number information to the battery management module so that the battery management module sends an alarm command to each battery cluster management unit;

[0015] The battery cluster management unit is specifically used to detect the operating status of each individual battery in the abnormal battery pack unit when the alarm command is received, and send the operating status information of each individual battery to the battery management module; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor and the smoke status information detected by the gas sensor.

[0016] Secondly, embodiments of the present invention also provide an active fire suppression method, which is applied to the active fire suppression system described in the first aspect above, the active fire suppression method comprising:

[0017] The battery cluster management unit detects the factory status information of each individual battery in the battery pack unit, performs outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and sends the outlier individual battery number information to the battery management module.

[0018] In operation, the battery cluster management unit detects the operating status of each individual battery cell within the battery pack unit and sends the operating status information of each individual battery cell to the battery management module; wherein, the operating status information includes temperature status level information and smoke status information;

[0019] The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information and the temperature status level information; it also outputs a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the temperature status level information, and the smoke information.

[0020] The fire protection module activates the fire protection system based on the first active fire protection request command and the second active fire protection request command.

[0021] Optionally, the temperature status level information includes a first risk temperature level information, a second risk temperature level information, and a third risk temperature level information; the risk levels of the first risk temperature level information, the second risk temperature level information, and the third risk temperature level information increase sequentially.

[0022] The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell serial number information and the temperature status level information, including:

[0023] Based on the outlier cell number information, the first risk temperature level information, and the third risk temperature level information, a first active fire-fighting request command is output to the fire-fighting module;

[0024] Based on the outlier cell number information, the second risk temperature level information, and the third risk temperature level information, a first active fire-fighting request command is output to the fire-fighting module.

[0025] Optionally, the temperature status level information includes a first risk temperature level information, a second risk temperature level information, and a third risk temperature level information; the risk levels of the first risk temperature level information, the second risk temperature level information, and the third risk temperature level information increase sequentially.

[0026] Based on the outlier cell serial number information, the temperature status level information, and the smoke information, a second active fire-fighting request command is output to the fire-fighting module, including:

[0027] Based on the outlier cell number information, the smoke information, and the first risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module;

[0028] Based on the outlier cell number information, the smoke information, and the second risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module;

[0029] Based on the outlier cell number information, the smoke information, and the third risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module;

[0030] Based on the outlier cell number information, the smoke information, the first risk temperature level information, and the second risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module.

[0031] Optionally, the temperature status level information further includes basic risk temperature level information; the risk level of the basic risk temperature level information is lower than the risk level of the first risk temperature level information.

[0032] The active fire suppression method further includes:

[0033] The battery management module outputs a power reduction request to the battery pack unit based on the basic risk temperature level information.

[0034] Optionally, the method further includes:

[0035] The battery management module outputs an alarm signal based on any one of the following: the basic risk temperature level information, the first risk temperature level information, the second risk temperature level information, the third risk temperature level information, the outlier cell number information, and the smoke status information.

[0036] Optionally, the energy storage battery module further includes several smoke detectors and several temperature detectors; the smoke detectors and the temperature detectors are disposed on the battery pack unit;

[0037] The battery management module is used to receive battery pack temperature information detected by each smoke detector and smoke information inside the battery pack detected by each temperature detector; it is also used to send the battery pack temperature information and the smoke information inside the battery pack to the fire protection module.

[0038] The fire protection module is used to determine battery pack alarm information and abnormal battery pack number information based on the received battery pack temperature information and smoke information inside the battery pack, and send the battery pack alarm information and abnormal battery pack number information to the battery management module so that the battery management module sends an alarm command to each battery cluster management unit;

[0039] Before the battery cluster management unit detects the operating status of each individual battery cell within the battery pack unit, it further includes:

[0040] When the battery cluster management unit receives the alarm command, it detects the operating status of each individual battery in the abnormal battery pack unit and sends the operating status information of each individual battery to the battery management module; wherein, the operating status information includes temperature status level information and smoke status information.

[0041] Optionally, the first risk temperature level information includes: the temperature rise rate of a single cell is greater than the first temperature change rate and the duration is a first preset time.

[0042] The second risk temperature level information includes: the rate of temperature drop during the temperature rise of a single cell is greater than the second temperature change rate and the duration is the second preset time;

[0043] The third risk temperature level information includes: monitoring that the temperature of cell n in battery pack m is greater than the first preset temperature and the temperature difference between cell n-1 and cell n+1 in battery pack m is greater than the second preset temperature.

[0044] Optionally, the basic risk temperature level information includes monitoring that the temperature of cell n in battery pack m is greater than a third preset temperature and the temperature difference between cell n-1 and cell n+1 in battery pack m is greater than a fourth preset temperature.

[0045] In this embodiment of the invention, a battery cluster management unit detects the factory status information of each individual battery cell within the battery pack unit, performs outlier analysis on the factory status information of each individual battery cell to determine the outlier individual battery cell number, and sends the outlier individual battery cell number information to the battery management module; during operation, the unit detects the operating status of each individual battery cell within the battery pack unit and sends the operating status information of each individual battery cell to the battery management module; the battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier individual battery cell number information and the temperature status level information; and also based on the outlier individual battery cell number... The battery number information, the temperature status level information, and the smoke information are output to the fire protection module as a second active fire-fighting request command. The fire protection module then activates the fire protection system based on the first and second active fire-fighting request commands. In this way, the solution can accurately determine the battery pack that is about to experience thermal runaway based on different conditions and promptly notify the fire protection system to activate, avoiding the problem of misjudgment caused by any abnormality of any detection equipment during the detection process. At the same time, the active request is activated at the battery management module based on the judgment conditions, which can play a preventive role in the early stage of thermal runaway, rather than activating the fire protection system only after the fire protection module has detected that thermal runaway has already occurred. Attached Figure Description

[0046] Figure 1 This is a structural schematic diagram of an active fire suppression system provided in an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram of another active fire suppression system provided in an embodiment of the present invention;

[0048] Figure 3 This is a schematic flowchart of an active fire-fighting method provided in an embodiment of the present invention;

[0049] Figure 4 This is a schematic flowchart of another active fire-fighting method provided in an embodiment of the present invention. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0051] Figure 1 This is a structural schematic diagram of an active fire suppression system provided in an embodiment of the present invention, as shown below. Figure 1As shown, the system includes: an energy storage battery module 10, a battery management module 20, and a fire protection module 30; the energy storage battery module 10 includes several battery pack units 11; each battery pack unit 11 includes a battery cluster management unit 111, several individual batteries 112, several temperature detection resistors 113, and several gas sensors 114.

[0052] The battery cluster management unit 111 is used to detect the factory status information of each individual battery 112 in the battery pack unit 11, perform outlier analysis on the factory status information of each individual battery 112 to determine the abnormal individual battery number information, and send the outlier individual battery number information to the battery management module 20.

[0053] It is also used to detect the operating status of each individual battery cell 112 in the battery pack unit 11 during operation, and send the operating status information of each individual battery cell 112 to the battery management module 20; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor temperature 113 and the smoke status information detected by the gas sensor 114.

[0054] Each battery cluster management unit 111 is communicatively connected to the battery management module 20; the battery management module 20 is used to output a first active fire-fighting request command to the fire-fighting module 30 based on the outlier cell number information and temperature status level information; it also outputs a second active fire-fighting request command to the fire-fighting module 30 based on the outlier cell number information, temperature status level information and smoke information.

[0055] The fire protection module 30 is communicatively connected to the battery management module 20; the fire protection module 30 is used to activate the fire protection system according to the first active fire protection request command and the second active fire protection request command.

[0056] The factory status information of each individual battery cell 112 includes voltage and temperature information during a complete charge-discharge cycle. The outlier analysis of the factory status information of each individual battery cell 112 is specifically performed as follows: based on the voltage and temperature information during a complete charge-discharge cycle, if any of the voltage or temperature information during the charge-discharge cycle does not conform to the preset voltage or temperature information, it is determined that the corresponding individual battery cell in the corresponding battery pack has a high risk of thermal runaway in the future. That is, the abnormal individual battery cell number information is determined, and the outlier individual battery cell number information is sent to the battery management module 20.

[0057] The temperature status level information includes various risk temperature level information; the risk levels of each risk temperature level information are different; for example, the temperature status level information includes first risk temperature level information, second risk temperature level information, and third risk temperature level information; the risk levels of the first risk temperature level information, second risk temperature level information, and third risk temperature level information increase sequentially; for example: the first risk temperature level information includes the first single cell temperature rise rate being greater than the first temperature change rate and lasting for a preset time of the first preset time; for example: the first temperature change rate is 2℃ / s; the first preset time is 3s; the second risk temperature level information includes: the single cell temperature rise process temperature drop rate being greater than the second temperature change rate and lasting for a preset time of the second preset time; for example: the second temperature change rate is 2℃ / s; the second preset time is 4s; the third risk temperature level information includes: monitoring the temperature of single cell n in battery pack m is greater than the first preset temperature and the temperature difference between it and single cells n-1 and n+1 in battery pack m is greater than the second preset temperature; for example: the first preset temperature is 65℃; the second preset temperature is 15℃.

[0058] In this embodiment, the battery cluster management unit determines the abnormal individual battery number information and sends the outlier individual battery number information to the battery management module. During operation, the battery cluster management unit detects the temperature status level information and smoke status information of each individual battery in the battery pack and sends these to the battery management module. The battery management module 20 then outputs a first active fire-fighting request command to the fire-fighting module 30 based on the outlier individual battery number information and temperature status level information. The fire-fighting module 30 then initiates fire-fighting operation based on the first active fire-fighting request command. This allows the battery management module 20 to initiate active fire-fighting operation by comprehensively considering various risk temperature levels and outlier individual battery number information, thereby improving the efficiency of fire-fighting operation and preventing the fire-fighting module from activating under a single temperature condition.

[0059] Simultaneously, the battery management module 20 outputs a second active fire-fighting request command to the fire-fighting module 30 based on the outlier cell number, temperature status level, and smoke information. The fire-fighting module 30 then activates the fire-fighting system based on this command. This way, if the gas sensor malfunctions and smoke information cannot be sent to the battery management module 20, or if the smoke information received by the battery management module 20 is abnormal, active fire-fighting activation can be initiated based on any risk level information in the temperature status level and the outlier cell number. Similarly, if the temperature detection resistor malfunctions and any risk level information in the temperature status level is abnormal, active fire-fighting activation can be initiated based on smoke information and the outlier cell number. This avoids the problem of misjudgment caused by any malfunction of the detection device during the detection process. It enables accurate identification of battery packs about to experience thermal runaway based on various conditions, promptly notifying the fire-fighting system to activate, thus improving the reliability of fire-fighting activation. In this way, this solution comprehensively outputs both the first and second active fire-fighting request commands to the fire-fighting module 30 based on various conditions, improving both the reliability of fire-fighting activation and fire-fighting efficiency. In addition, compared to existing technologies, where the fire protection module typically only activates the fire protection system when both smoke and heat sensors detect an alarm simultaneously, by which time the system may have already reached or exceeded the highest temperature and smoke risk levels, meaning the fire protection module only activates the system when it detects thermal runaway. In this embodiment, the battery management module initiates an active request based on certain conditions, which can effectively prevent thermal runaway in its early stages.

[0060] Optional, Figure 2 This is a structural schematic diagram of an active fire suppression system provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the energy storage battery module 10 also includes several smoke detectors 115 and several temperature detectors 116; the smoke detectors 115 and temperature detectors 116 are disposed on the battery pack unit 11.

[0061] The battery management module 20 is also used to receive battery pack temperature information detected by each smoke detector 115 and battery pack smoke information detected by each heat detector 116; it is also used to send battery pack temperature information and battery pack smoke information to the fire protection module 30.

[0062] The fire protection module 30 is used to determine the battery pack alarm information and abnormal battery pack number information based on any one of the received battery pack temperature information and battery pack smoke information, and send the battery pack alarm information and abnormal battery pack number information to the battery management module 20 so that the battery management module 20 sends an alarm command to each battery cluster management unit 11.

[0063] The battery cluster management unit 11 is specifically used to detect the operating status of each individual battery cell 112 in the abnormal battery pack unit when an alarm command is received, and send the operating status information of each individual battery cell 112 to the battery management module 20; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor 113 and the smoke status information detected by the gas sensor 114.

[0064] If both the temperature sensing resistor 113 and the gas sensor 114 malfunction, the battery management module 20 can receive battery pack temperature information detected by each smoke detector 115 and smoke information inside the battery pack detected by each temperature sensor 116. It can also send either the battery pack temperature information or the smoke information inside the battery pack to the fire suppression module 30, which will activate the fire suppression system based on either the battery pack temperature information or the smoke information inside the battery pack. Generally, the battery pack temperature information represents the highest temperature level, and the smoke information inside the battery pack represents the highest smoke level.

[0065] If the temperature sensing resistor 113 and the gas sensor 114 are both working normally, when the battery cluster management unit 11 receives an alarm command, it detects the temperature status level information and smoke status information of each individual battery 112 in the abnormal battery pack unit. The battery management module 20 then outputs a first active fire-fighting request command to the fire-fighting module 30 based on the out-of-population battery number information and temperature status level information; it also outputs a second active fire-fighting request command to the fire-fighting module 30 based on the out-of-population battery number information, temperature status level information, and smoke information. This further improves the reliability of fire-fighting activation based on the above embodiment. In addition, compared with the prior art, where the fire-fighting module 30 activates the fire-fighting system simultaneously based on battery pack temperature information and smoke information within the battery pack, this solution also gains a certain advantage in terms of time, thus improving fire-fighting efficiency.

[0066] Based on the same inventive concept, this invention also provides an active fire suppression method, which is applied to the active fire suppression system described in the above embodiments. Figure 3 This is a schematic flowchart of an active fire suppression method provided in an embodiment of the present invention, as shown below. Figure 3 As shown, the active fire suppression method includes:

[0067] S110: The battery cluster management unit detects the factory status information of each individual battery in the battery pack unit, performs outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and sends the outlier individual battery number information to the battery management module.

[0068] S120. In operation, the battery cluster management unit detects the operating status of each individual battery cell in the battery pack unit and sends the operating status information of each individual battery cell to the battery management module; the operating status information includes temperature status level information and smoke status information.

[0069] S130: The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information and temperature status level information; it also outputs a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, temperature status level information and smoke information.

[0070] S140, the fire protection module activates the fire protection system according to the first active fire protection request command and the second active fire protection request command.

[0071] This solution enables accurate identification of battery packs that are about to experience thermal runaway based on various conditions, and timely notification of the fire suppression system to activate. This avoids the problem of misjudgment caused by any abnormality in the detection equipment during the detection process. At the same time, the battery management module initiates an active request based on the judgment conditions, which can play a preventive role in the early stage of thermal runaway, rather than only activating the fire suppression system after thermal runaway has been detected by the fire suppression module.

[0072] Optionally, based on the above embodiments, the output of the first active fire-fighting request and the first active fire-fighting request can be further refined. Figure 4 This is a schematic flowchart of another active fire suppression method provided in an embodiment of the present invention; as shown below. Figure 4 As shown, the method includes the following steps:

[0073] S210: The battery cluster management unit detects the factory status information of each individual battery in the battery pack unit, performs outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and sends the outlier individual battery number information to the battery management module.

[0074] S220. When in operation, if the battery cluster management unit receives an alarm command, it will detect the operating status of each individual battery cell in the battery pack and send the operating status information of each individual battery cell to the battery management module. The operating status information includes temperature status level information and smoke status information.

[0075] Among them, reference Figure 2The energy storage battery module 10 also includes several smoke detectors 115 and several temperature detectors 116; the smoke detectors 115 and temperature detectors 116 are installed on the battery pack unit; the battery management module 20 is used to receive battery pack temperature information detected by each smoke detector 115 and smoke information inside the battery pack detected by each temperature detector 116; it is also used to send the battery pack temperature information and smoke information inside the battery pack to the fire protection module 30; the fire protection module 30 is used to determine battery pack alarm information and abnormal battery pack number information based on the received battery pack temperature information and smoke information inside the battery pack, and send the battery pack alarm information and abnormal battery pack number information to the battery management module 20 so that the battery management module 20 sends an alarm command to each battery cluster management unit 111; when the battery cluster management unit 111 receives the alarm command, it detects the operating status of each individual battery in the battery pack unit and sends the operating status information of each individual battery to the battery management module 20; this can avoid the inability to start the fire protection when both the temperature detection resistor 113 and the gas sensor 114 detect abnormalities, thus improving the reliability of fire protection start-up.

[0076] Specifically, in this embodiment, the temperature status level information includes first risk temperature level information, second risk temperature level information, and third risk temperature level information; the risk levels of the first risk temperature level information, second risk temperature level information, and third risk temperature level information increase sequentially.

[0077] The first risk temperature level information is that the temperature rise rate of the first single cell is greater than the first temperature change rate and the duration is a first preset time; for example, the first temperature change rate is 2℃ / S; the first preset time is 3s.

[0078] The second risk temperature level information is: the rate of temperature drop during the temperature rise of a single cell is greater than the second temperature change rate and lasts for a preset time. It is understood that during the temperature rise of a single cell, the temperature drop may cause gas evolution, resulting in gas heat absorption. This temperature level is higher than the risk level information of the first risk temperature level. For example, the second temperature change rate is 2℃ / S; the second preset time is 4s.

[0079] The third risk temperature level information is: the temperature of cell n in battery pack m is higher than the first preset temperature, and the temperature difference between cell n-1 and cell n+1 in battery pack m is greater than the second preset temperature. It can be understood that this risk temperature level information indicates that cell n has a larger temperature difference than its adjacent cells, and this temperature level is a higher risk level than the second risk temperature level information. For example, the first preset temperature is 65℃; the second preset temperature is 15℃.

[0080] S230: The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the first risk temperature level information, and the third risk temperature level information; and outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the second risk temperature level information, and the third risk temperature level information.

[0081] The battery management module 20 can initiate active fire suppression by integrating the first risk temperature level information, the third risk temperature level information, and the outlier cell number information, or by integrating the second risk temperature level information, the third risk temperature level information, and the outlier cell number information. This avoids the fire suppression module from activating under a single temperature condition and also avoids the ineffectiveness of initiating active fire suppression by integrating the first risk temperature level information, the second risk temperature level information, and the outlier cell number information, thus improving the efficiency of fire suppression activation.

[0082] S240: Output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, smoke information, and first risk temperature level information; output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, smoke information, and second risk temperature level information; output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, smoke information, and third risk temperature level information; output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, smoke information, first risk temperature level information, and second risk temperature level information.

[0083] Specifically, if the gas sensor 114 malfunctions and smoke information cannot be sent to the battery management module 20, and the smoke information data received by the battery management module 20 is abnormal, it can initiate active fire suppression based on any risk level information in the temperature status information and the outlier cell number information; or if the temperature detection resistor 113 malfunctions and any risk level information in the temperature status information is abnormal, it can initiate active fire suppression based on the smoke information and the outlier cell number information. This avoids the problem of misjudgment caused by any malfunction of any detection device during the detection process; it enables accurate judgment of battery packs that are about to experience thermal runaway based on different conditions, timely notification of the fire suppression system, and improves the reliability of fire suppression activation.

[0084] Additionally, it should be noted that the temperature status level information also includes basic risk temperature level information; the risk level of the basic risk temperature level information is lower than the risk level of the first risk temperature level information; the basic risk temperature level information is defined as the temperature of cell n in battery pack m being greater than the third preset temperature and the temperature difference between cell n-1 and cell n+1 in battery pack m being greater than the fourth preset temperature; for example, the third preset temperature is 45℃; the fourth preset temperature is 10℃; the battery management module then outputs a power reduction request to the battery pack unit based on the basic risk temperature level information to control the temperature from continuing to rise.

[0085] Additionally, it should be noted that the method further includes: the battery management module outputting an alarm signal based on any one of the following information: the basic risk temperature level information, the first risk temperature level information, the second risk temperature level information, the third risk temperature level information, the outlier cell number information, and the smoke status information; that is, the battery management module outputs an alarm signal to the monitoring screen or the background monitoring platform based on any one of the information to prompt the maintenance personnel to check the energy storage battery module 10.

[0086] S250, the fire protection module activates the fire protection system based on the first active fire protection request command and the second active fire protection request command.

[0087] This solution comprehensively outputs first and second active fire-fighting request commands to the fire-fighting module 30 based on various conditions, improving the reliability of fire-fighting activation and simultaneously increasing fire-fighting efficiency. Furthermore, compared to existing technologies where the fire-fighting module typically only activates the system when both smoke and heat detectors simultaneously alarm, potentially by which time the system may have already reached or exceeded the highest temperature and smoke risk levels (i.e., the fire-fighting module detects thermal runaway before activation), this embodiment initiates active requests based on judgment conditions at the battery management module end, effectively preventing thermal runaway in its early stages. In addition, when the battery cluster management unit 111 receives an alarm command, it detects the operating status of each individual battery cell within the battery pack and sends this information to the battery management module 20. This avoids situations where both the temperature detection resistor 113 and the gas sensor 114 detect abnormalities, preventing subsequent fire-fighting activation and further improving the reliability of fire-fighting activation.

[0088] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An active fire suppression system, characterized in that, include: Energy storage battery module, battery management module and fire protection module; The energy storage battery module includes several battery pack units; each battery pack unit includes a battery cluster management unit, several individual batteries, several temperature detection resistors, and several gas sensors. The battery cluster management unit is used to detect the factory status information of each individual battery in the battery pack unit, perform outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and send the outlier individual battery number information to the battery management module. It is also used to detect the operating status of each individual battery cell in the battery pack unit during operation, and send the operating status information of each individual battery cell to the battery management module; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor and the smoke status information detected by the gas sensor; Each of the battery cluster management units is communicatively connected to the battery management module; the battery management module is used to output a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information and the temperature status level information; and also to output a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the temperature status level information and the smoke information. The fire protection module is communicatively connected to the battery pack management system; the fire protection module is used to activate the fire protection system according to the first active fire protection request command and the second active fire protection request command. The temperature status level information includes first risk temperature level information, second risk temperature level information and third risk temperature level information; The first risk temperature level information includes: the temperature rise rate of a single cell is greater than the first temperature change rate and the duration is a first preset time; The second risk temperature level information includes: the rate of temperature drop during the temperature rise of a single cell is greater than the second temperature change rate and the duration is the second preset time; The third risk temperature level information includes: monitoring that the temperature of cell n in battery pack m is greater than the first preset temperature and the temperature difference between cell n-1 and cell n+1 in battery pack m is greater than the second preset temperature.

2. The active fire suppression system according to claim 1, characterized in that, The energy storage battery module also includes several smoke detectors and several temperature detectors; the smoke detectors and the temperature detectors are disposed on the battery pack unit; The battery management module is also used to receive battery pack temperature information detected by each of the smoke detectors and to receive smoke information inside the battery pack detected by each of the temperature detectors; it is also used to send the battery pack temperature information and the smoke information inside the battery pack to the fire protection module. The fire protection module is used to determine battery pack alarm information and abnormal battery pack number information based on the received battery pack temperature information and smoke information inside the battery pack, and send the battery pack alarm information and abnormal battery pack number information to the battery management module so that the battery management module sends an alarm command to each battery cluster management unit; The battery cluster management unit is specifically used to detect the operating status of each individual battery in the abnormal battery pack unit when the alarm command is received, and send the operating status information of each individual battery to the battery management module; wherein, the operating status information includes the temperature status level information detected by the temperature detection resistor and the smoke status information detected by the gas sensor.

3. An active fire suppression method, characterized in that, The active fire suppression system described in any one of claims 1-2, wherein the active fire suppression method comprises: The battery cluster management unit detects the factory status information of each individual battery in the battery pack unit, performs outlier analysis on the factory status information of each individual battery to determine the abnormal individual battery number information, and sends the outlier individual battery number information to the battery management module. In operation, the battery cluster management unit detects the operating status of each individual battery cell within the battery pack unit and sends the operating status information of each individual battery cell to the battery management module; wherein, the operating status information includes temperature status level information and smoke status information; The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell number information and the temperature status level information; it also outputs a second active fire-fighting request command to the fire-fighting module based on the outlier cell number information, the temperature status level information, and the smoke information. The fire protection module activates the fire protection system based on the first active fire protection request command and the second active fire protection request command.

4. The active fire suppression method according to claim 3, characterized in that, The risk levels of the first risk temperature level information, the second risk temperature level information, and the third risk temperature level information increase sequentially. The battery management module outputs a first active fire-fighting request command to the fire-fighting module based on the outlier cell serial number information and the temperature status level information, including: Based on the outlier cell number information, the first risk temperature level information, and the third risk temperature level information, a first active fire-fighting request command is output to the fire-fighting module; Based on the outlier cell number information, the second risk temperature level information, and the third risk temperature level information, a first active fire-fighting request command is output to the fire-fighting module.

5. The active fire suppression method according to claim 3, characterized in that, The temperature status level information includes a first risk temperature level information, a second risk temperature level information, and a third risk temperature level information; the risk levels of the first risk temperature level information, the second risk temperature level information, and the third risk temperature level information increase sequentially. Based on the outlier cell serial number information, the temperature status level information, and the smoke information, a second active fire-fighting request command is output to the fire-fighting module, including: Based on the outlier cell number information, the smoke information, and the first risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module; Based on the outlier cell number information, the smoke information, and the second risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module; Based on the outlier cell number information, the smoke information, and the third risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module; Based on the outlier cell number information, the smoke information, the first risk temperature level information, and the second risk temperature level information, a second active fire-fighting request command is output to the fire-fighting module.

6. The active fire suppression method according to claim 4, characterized in that, The temperature status level information also includes basic risk temperature level information; The risk level of the basic risk temperature level information is lower than the risk level of the first risk temperature level information. The active fire suppression method further includes: The battery management module outputs a power reduction request to the battery pack unit based on the basic risk temperature level information.

7. The active fire suppression method according to claim 6, characterized in that, Also includes: The battery management module outputs an alarm signal based on any one of the following: the basic risk temperature level information, the first risk temperature level information, the second risk temperature level information, the third risk temperature level information, the outlier cell number information, and the smoke status information.

8. The active fire suppression method according to claim 3, characterized in that, The energy storage battery module also includes several smoke detectors and several temperature detectors; the smoke detectors and the temperature detectors are disposed on the battery pack unit; The battery management module is used to receive battery pack temperature information detected by each smoke detector and smoke information inside the battery pack detected by each temperature detector; it is also used to send the battery pack temperature information and the smoke information inside the battery pack to the fire protection module. The fire protection module is used to determine battery pack alarm information and abnormal battery pack number information based on the received battery pack temperature information and smoke information inside the battery pack, and send the battery pack alarm information and abnormal battery pack number information to the battery management module so that the battery management module sends an alarm command to each battery cluster management unit; Before the battery cluster management unit detects the operating status of each individual battery cell within the battery pack unit, it further includes: When the battery cluster management unit receives the alarm command, it detects the operating status of each individual battery in the abnormal battery pack unit and sends the operating status information of each individual battery to the battery management module; wherein, the operating status information includes temperature status level information and smoke status information.

9. The active fire suppression method according to claim 6, characterized in that, The basic risk temperature level information includes monitoring that the temperature of cell n in battery pack m is greater than the third preset temperature and the temperature difference between cell n-1 and cell n+1 in battery pack m is greater than the fourth preset temperature.

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