Fire control method and system for energy storage system and battery management system thereof

Abstract

The invention provides a fire control method and system for an energy storage system and a battery management system thereof. The fire control system comprises a battery management system, a fire detection system and a fire extinguishing system, wherein the fire detection system and the fire extinguishing system are connected with the battery management system; the battery management system is also connected with a plurality of battery modules arranged in a battery cabin; the battery management system is configured to obtain monitoring data of each battery cell in each battery module, perform first fire-fighting grade division according to the monitoring data and the first fire-fighting detection data, and then control the first fire-fighting device to start a first fire-fighting strategy corresponding to the first fire-fighting grade according to the first fire-fighting grade; and the battery management system is further configured to perform second fire-fighting grade division according to the second fire-fighting detection data, and control the first fire-fighting device to start a second fire-fighting strategy corresponding to the second fire-fighting grade according to the second fire-fighting grade.

Description

Technical Field

[0001] The present application relates to the technical field of fire protection of energy storage systems, and in particular to a fire protection control method and system for energy storage systems and a battery management system thereof. Background Art

[0002] With the development of energy storage technology and its widespread application, the safe operation and fire protection of energy storage systems have gradually received attention. Energy-intensive devices such as lithium-ion batteries used in energy storage systems have potential fire and thermal runaway risks. Once a fire occurs, due to the internal chemical reactions of the battery and the characteristics of the power equipment, the fire may spread rapidly, causing serious damage to the equipment and the surrounding environment.

[0003] However, in the relevant technologies, the design of electrochemical energy storage and new energy fire protection solutions has not yet issued complete fire protection design specifications. The fire protection companies, new energy companies, and battery system integration factories in the industry are based on traditional building fire protection design specifications. The design of fire detection, alarm, linkage and other control strategies for electrochemical energy storage products still cannot meet the current needs for timeliness and cost of fire protection. Summary of the invention

[0004] The embodiments of the present application provide a fire control method and system for an energy storage system and a battery management system thereof, which can improve the technical problems of timeliness and rationality of fire protection of electrochemical energy storage products.

[0005] In a first aspect, an embodiment of the present application provides a fire control system for an energy storage system, the fire control system comprising: a battery management system and a fire detection system and a fire extinguishing system connected to the battery management system, the fire detection system comprising a first fire detection device and a second fire detection device, the fire extinguishing system comprising a first fire extinguishing device and a second fire extinguishing device, the battery management system is also connected to a plurality of battery modules arranged in a battery compartment;

[0006] The first fire detection device is configured to collect first fire detection data of the battery module and send the first fire detection data to the battery management system;

[0007] The second fire detection device is configured to collect second fire detection data in the battery compartment and send the second fire detection data to the battery management system;

[0008] The battery management system is configured to obtain monitoring data of each battery cell in each of the battery modules, and perform a first fire classification according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start a first fire strategy corresponding to the first fire classification according to the first fire classification;

[0009] The battery management system is further configured to perform a second fire classification according to the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire level according to the second fire level.

[0010] In a second aspect, an embodiment of the present application provides a fire control method for an energy storage system, which is applied to a battery management system, and the method includes:

[0011] Acquire monitoring data of each battery cell in each of the battery modules, and perform a first fire classification according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start a first fire strategy corresponding to the first fire classification according to the first fire classification;

[0012] A second firefighting level is divided according to the second firefighting detection data, and the first firefighting extinguishing device is controlled to start a second firefighting strategy corresponding to the second firefighting level according to the second firefighting level.

[0013] In a third aspect, an embodiment of the present application provides a battery management system, the battery management system comprising:

[0014] one or more processors;

[0015] Memory; and

[0016] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the steps in the fire control method for an energy storage system.

[0017] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in the fire control method for an energy storage system.

[0018] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program or instructions, and the steps in the fire control method for an energy storage system when the computer program or instructions are executed by a processor.

[0019] Beneficial effects of the embodiments of the present application:

[0020] The fire control system for the energy storage system provided in the present application connects the battery management system with the fire detection system, the fire extinguishing system and the battery compartment so that the battery management system can directly communicate and interact with the fire detection system, the fire extinguishing system and the battery compartment. Therefore, there is no need to set up an additional fire host, thereby reducing the cost of fire equipment. Furthermore, compared with the communication and interaction between the fire host and other systems, the present application directly communicates and interacts with other systems through the battery management system, and controls the fire extinguishing system to execute corresponding fire strategies based on the judgment results, which can effectively improve the communication speed and efficiency between the systems, and improve the timeliness of discovering abnormal situations and taking fire actions during the fire fighting process. In addition, the present application also implements a hierarchical fire fighting strategy by respectively setting up two parallel fire fighting schemes for battery cells and battery compartments, thereby improving the rationality and safety of fire fighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of a fire control system provided by an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of an embodiment of a fire control method provided in an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the structure of a battery management system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0026] Because of the lack of complete fire protection design specifications for the design of electrochemical energy storage and new energy fire protection solutions in related technologies, fire protection companies, new energy companies, and battery system integration plants in the industry are based on traditional building fire protection design specifications. The design of fire detection, alarm, linkage and other control strategies for electrochemical energy storage products still cannot meet the current needs for timeliness and cost of fire protection. To this end, the embodiments of the present application provide a fire control method, system and battery management system for an energy storage system, so that the battery management system can directly communicate and interact with the fire detection system, the fire extinguishing system and the battery compartment by connecting the battery management system to the fire detection system, the fire extinguishing system and the battery compartment. As a result, there is no need to set up an additional fire host, thereby reducing the cost of fire equipment. Furthermore, compared with the communication and interaction between the fire host and other systems, the present application directly communicates and interacts with other systems through the battery management system, and controls the fire extinguishing system to execute corresponding fire strategies based on the judgment results, which can effectively improve the communication speed and efficiency between the systems, and improve the timeliness of discovering abnormal situations and taking fire actions during the fire fighting process. In addition, the present application also implements a hierarchical fire fighting strategy by respectively setting up two sets of parallel fire fighting schemes for battery cells and battery compartments, thereby improving the rationality and safety of fire fighting. For specific schemes, please refer to the specific description below.

[0027] For details, please refer to Figure 1 , Figure 1 is a structural schematic diagram of a fire control system for an energy storage system provided by an embodiment of the present application. The fire control system 10 specifically includes a battery management system 100 and a fire detection system 200 and a fire extinguishing system 300 connected to the battery management system 100. The fire detection system 200 includes a first fire detection device and a second fire detection device. The fire extinguishing system 300 includes a first fire extinguishing device and a second fire extinguishing device. The battery management system 100 is also connected to a plurality of battery modules 400 disposed in a battery compartment.

[0028] The first fire detection device is configured to collect first fire detection data of the battery module 400 and send the first fire detection data to the battery management system 100;

[0029] The second fire detection device is configured to collect second fire detection data in the battery compartment and send the second fire detection data to the battery management system 100;

[0030] The battery management system 100 is configured to obtain monitoring data of each battery cell in each of the battery modules 400, and perform a first fire level classification according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start a first fire strategy corresponding to the first fire level according to the first fire level;

[0031] The battery management system 100 is further configured to perform a second fire classification according to the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire classification according to the second fire classification.

[0032] Among them, two fire protection solutions are configured in the battery management system 100:

[0033] The first fire protection plan is to "obtain monitoring data of each battery cell in each of the battery modules 400, and divide the first fire protection level according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start the first fire protection strategy corresponding to the first fire protection level according to the first fire protection level."

[0034] The second fire protection plan is to "carry out a second fire protection level classification according to the second fire protection detection data, and control the first fire protection extinguishing device to start the second fire protection strategy corresponding to the second fire protection level according to the second fire protection level."

[0035] These two fire-fighting plans run in parallel, that is, when a disaster occurs, based on the actual situation of the disaster, only the first fire-fighting plan may be triggered, or only the second fire-fighting plan may be triggered, or both the first fire-fighting plan and the second fire-fighting plan may be triggered at the same time.

[0036] There are multiple battery clusters in the battery compartment, and each battery cluster is provided with multiple battery modules 400. Optionally, the number of battery clusters provided in the battery compartment can be set according to actual power demand, for example, 3, 10 or 30. And the number of battery modules 400 provided in the battery cluster can be set according to actual power demand, for example, 5, 10 or 20.

[0037] In some embodiments, the battery management system 100 includes multiple master controllers and multiple slave controllers.

[0038] In some embodiments, each battery cluster can be configured with a master control and multiple slave controls, wherein adjacent slave controls among the multiple slave controls can be connected to each other, wherein the master control can be connected to a target slave control among the multiple slave controls, and the slave control is configured to be connected to the corresponding battery module 400 for collecting monitoring data of the corresponding battery module 400.

[0039] Among them, adjacent master controllers in the battery compartment can be connected to each other through the CAN bus, the master controller and slave controllers in each battery cluster can be connected to each other through the CAN bus, and the slave controllers can also be connected to each other through the CAN bus.

[0040] In some embodiments, the fire control system 10 may also include a master control, which may be arranged between the battery management system 100 and the fire detection system 200, and the master control may be arranged between the battery management system 100 and the fire extinguishing system 300. Specifically, the battery management system 100 may interact with the master control, and control the fire detection system 200 and the fire extinguishing system 300 by issuing corresponding control instructions to the master control.

[0041] In the embodiment of the present application, the battery management system 100 is connected to the fire detection system 200, the fire extinguishing system 300 and the battery compartment, so that the battery management system 100 can directly communicate and interact with the fire detection system 200, the fire extinguishing system 300 and the battery compartment. Therefore, there is no need to set up an additional fire host, thereby reducing the cost of fire equipment. Furthermore, compared with the communication and interaction between the fire host and other systems, the present application directly communicates and interacts with other systems through the battery management system 100, and controls the fire extinguishing system 300 to execute corresponding fire strategies based on the judgment results, which can effectively improve the communication speed and efficiency between the systems, improve the discovery of abnormal situations during the fire fighting process and the timeliness of fire fighting actions. In addition, the present application also implements a hierarchical fire fighting strategy by respectively setting up two sets of parallel fire fighting plans for battery cells and battery compartments, thereby improving the rationality and safety of fire fighting.

[0042] In some embodiments, the first fire level classification based on the monitoring data and the first fire detection data includes: obtaining preset early warning thresholds and alarm thresholds corresponding to the monitoring data and the first fire detection data, respectively; and classifying the first fire level based on the comparison results of the monitoring data and the first fire detection data with the corresponding preset early warning thresholds and alarm thresholds, respectively.

[0043] Among them, the first fire detection device may include a pressure sensor arranged in the battery module, and the pressure sensor is configured to detect the degree of expansion of the battery cells in the battery module. The first fire detection data detected by the pressure sensor includes pressure sensing data, and the numerical value of the pressure sensing data is positively correlated with the degree of expansion of the battery cells in the battery module.

[0044] The battery management system 100 itself can receive monitoring data collected by various collection devices arranged in the battery module. Specifically, the monitoring data may include temperature monitoring data and voltage monitoring data.

[0045] Among them, the first fire protection level can be divided into a first fire warning level and a first fire alarm level; it should be noted that the fire warning level is characterized by a warning level that determines that the current disaster has not actually occurred, but there is a greater probability that a disaster will occur, and the fire alarm level is characterized by an alarm level that determines that the current disaster has actually occurred; in this way, the first fire warning level and the first fire alarm level are used to classify the disaster mainly to determine whether there is an actual fire. However, compared with the situation in the related technology where only a fire alarm is set after a fire occurs, the present application also adds a fire warning level that is lower than the fire alarm level. This setting can provide an effective warning when a disaster is about to occur, and implement reasonable fire warning measures, which can reduce the probability of the disaster, avoid the actual occurrence of the disaster, and reduce the property loss and casualties caused by the disaster.

[0046] In some embodiments, before obtaining the preset early warning threshold and alarm threshold corresponding to the monitoring data and the first fire detection data respectively, it may also include: setting the preset early warning threshold and alarm threshold corresponding to the monitoring data and the first fire detection data respectively; storing the early warning threshold and alarm threshold in a preset target storage object.

[0047] The target storage object can be set according to actual needs, such as a database, a designated storage medium, or cloud storage.

[0048] The early warning threshold and the alarm threshold may be set based on the analysis results of the properties of each system device and previous usage experience. It should be noted that the early warning threshold and the alarm threshold may be a numerical range.

[0049] The preset early warning threshold and alarm threshold corresponding to the monitoring data and the first fire detection data respectively may be obtained by reading from a target storage object.

[0050] In some embodiments, the first fire level classification is performed according to the comparison results of the monitoring data and the first fire detection data with the corresponding preset warning threshold and alarm threshold, including: if the temperature monitoring data is within the corresponding temperature warning threshold range, the voltage monitoring data is within the corresponding voltage warning threshold range, and the pressure sensing data is within the corresponding pressure warning threshold range, then determining that the first fire level is the first fire warning level;

[0051] If at least two of the temperature monitoring data are within the corresponding temperature alarm threshold range, the voltage monitoring data are within the corresponding voltage alarm threshold range, and the pressure sensing data are within the corresponding alarm threshold range, or if the temperature monitoring data and the voltage monitoring data are lost and the pressure sensing data are within the corresponding alarm threshold range, then the first fire protection level is determined to be the first fire alarm level.

[0052] In some embodiments, the temperature warning threshold range may be [40°C to 90°C], and the voltage warning threshold range may be (2V to 3.2V). The pressure warning threshold range value is related to various parameters such as different types of battery cells and the arrangement of battery cells, so it can be set according to actual conditions.

[0053] In the embodiment of the present application, the fire detection data is divided into different fire levels by setting a corresponding warning threshold range and an alarm threshold range.

[0054] In some embodiments, the energy storage system includes an energy storage container, the first fire fighting strategy includes a first early warning fire fighting strategy and a first alarm fire fighting strategy, the first fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm and a fire fighting gas cylinder arranged on the energy storage container, and the battery management system 100 is also connected to the exhaust fan, the fire fighting gas cylinder and the circuit breaker and relay in the high-voltage box; wherein, the fire fighting control system 10 and each equipment module in the energy storage system can be integrated in the energy storage container, thereby improving the integration of the energy storage system. Of course, the core equipment such as the battery management system 100 can also be isolated from the battery module 400 to prevent the battery management system 100 from failing due to thermal runaway of the battery module 400 and failing to execute and start corresponding fire fighting measures.

[0055] The controlling the first fire extinguishing device to start a first fire fighting strategy corresponding to the first fire fighting level according to the first fire fighting level includes: if the first fire fighting level is the first fire warning level, then according to the first fire warning level, controlling the first fire extinguishing device to start the first warning fire fighting strategy corresponding to the first fire warning level, wherein the first warning fire fighting strategy includes starting the exhaust fan, turning on the sound and light alarm, and disconnecting the circuit breaker and the relay;

[0056] If the first fire protection level is the first fire alarm level, then according to the first fire alarm level, the first fire extinguishing device is controlled to start the first alarm fire protection strategy corresponding to the first fire alarm level, and the first alarm fire protection strategy includes starting the exhaust fan, turning on the sound and light alarm, turning on the fire gas cylinder, and disconnecting the circuit breaker and the relay.

[0057] The embodiments of the present application can effectively improve the disaster response capability of the energy storage system by implementing a cell-level fire warning and fire alarm solution, and improve the timeliness of detecting abnormal situations and taking firefighting actions during the firefighting process.

[0058] In some embodiments, the first fire extinguishing device further includes an aerosol disposed within the battery module 400 .

[0059] In the embodiment of the present application, by setting an aerosol in the battery module 400, a backup fire protection plan is provided for the fire protection strategy, because when the electronic components described above fail and cannot trigger the fire protection, there is still aerosol as a backup protection, which can extinguish the fire and suppress thermal runaway of the battery cells in the pack.

[0060] In some embodiments, the second fire level classification based on the second fire detection data includes: obtaining a preset early warning threshold and an alarm threshold corresponding to the second fire detection data; and classifying the second fire level based on a comparison result between the second fire detection data and the corresponding preset early warning threshold and the alarm threshold.

[0061] Wherein, the energy storage system includes an energy storage container, and the second fire detection device may include a smoke detector, a combustible gas detector and a temperature detector arranged on the energy storage container.

[0062] Specifically, the smoke detector can use photoelectric detection technology. The smoke detector can use an infrared diode to emit infrared light. When smoke enters the detector, the smoke particles will reflect the infrared light, causing the light intensity received by the receiving diode to change. The photoelectric detector determines whether there is smoke by detecting this change in light intensity. For example, an inhalation smoke detector can be used. The inhalation smoke detector uses dual-wavelength optical detection technology to detect lithium-ion battery electrolyte vapor (also known as exhaust gas particles) and uses infrared and blue light energy to accurately detect particles, thereby achieving early fire detection.

[0063] The combustible gas detector can use an electrochemical sensor, which can detect the concentration of specific gases (such as carbon monoxide, hydrogen, carbon dioxide, etc.) through electrochemical reactions. The detected ambient gas diffuses into the electrolyte of the sensor through the thin film at the lower end of the sensor, and the measuring electrode in the electrolyte undergoes an electrochemical reaction, thereby generating an electrical signal to detect the combustible gas.

[0064] The second fire detection data includes smoke concentration detection data, combustible gas concentration detection data and temperature detection data, wherein the second fire level can be divided into a second fire warning level and a second fire alarm level; it should be noted that the fire warning level is characterized by a warning level that determines that the current disaster has not actually occurred, but there is a greater probability that a disaster will occur, and the fire alarm level is characterized by an alarm level that determines that the current disaster has actually occurred; in this way, the second fire warning level and the second fire alarm level are mainly used to determine whether a real fire has occurred. However, compared with the situation in the related technology where only a fire alarm is set after a fire occurs, the present application also adds a fire warning level that is lower than the fire alarm level. This setting can provide an effective warning when a disaster is about to occur, and implement reasonable fire warning measures, which can reduce the probability of a disaster, avoid the actual occurrence of a disaster, and reduce property losses and casualties caused by the disaster.

[0065] In some embodiments, before obtaining the preset warning threshold and alarm threshold corresponding to the second fire detection data, it can also include: setting the preset warning threshold and alarm threshold corresponding to the second fire detection data; and storing the warning threshold and alarm threshold in a preset target storage object.

[0066] The target storage object can be set according to actual needs, such as a database, a designated storage medium, or cloud storage.

[0067] The early warning threshold and the alarm threshold may be set based on the analysis results of the properties of each system device and previous usage experience. It should be noted that the early warning threshold and the alarm threshold may be a numerical range.

[0068] The early warning threshold and the alarm threshold of the second fire detection data may be obtained by reading from a target storage object.

[0069] In some embodiments, the second fire level classification according to the comparison result of the second fire detection data with the corresponding preset warning threshold and alarm threshold includes: if the smoke concentration detection data is within the corresponding smoke concentration warning threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration warning threshold range, and the temperature detection data is within the corresponding temperature warning threshold range, then determining that the second fire level is the second fire warning level;

[0070] If at least two of the following situations occur simultaneously: the smoke concentration detection data is within the corresponding smoke concentration alarm threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration alarm threshold range, and the temperature detection data is within the corresponding temperature alarm threshold range, then the second fire protection level is determined to be the second fire alarm level.

[0071] In some embodiments, the second fire fighting strategy includes a second early warning fire fighting strategy and a second alarm fire fighting strategy, and the second fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm, and a fire fighting gas cylinder arranged on the energy storage container, and the battery management system 100 is also connected to the exhaust fan, the fire fighting gas cylinder, and a circuit breaker and a relay in the high-voltage box;

[0072] The controlling the second fire-fighting device to start the second fire-fighting strategy corresponding to the second fire-fighting level according to the second fire-fighting level includes: if the second fire-fighting level is the second fire warning level, then according to the second fire warning level, controlling the second fire-fighting device to start the second warning fire-fighting strategy corresponding to the second fire warning level, the second warning fire-fighting strategy includes starting the exhaust fan, turning on the sound and light alarm, and disconnecting the circuit breaker and the relay; if the second fire-fighting level is the second fire alarm level, then according to the second fire alarm level, controlling the second fire-fighting device to start the second alarm fire-fighting strategy corresponding to the second fire alarm level, the second alarm fire-fighting strategy includes starting the exhaust fan, turning on the sound and light alarm, turning on the fire-fighting gas cylinder, and disconnecting the circuit breaker and the relay.

[0073] The embodiments of the present application can effectively improve the disaster response capability of the energy storage system by implementing a fire warning and fire alarm solution at the battery compartment level, and improve the timeliness of detecting abnormal situations and taking firefighting actions during the firefighting process.

[0074] Based on the above fire control system, the present application also provides a fire control method for an energy storage system, such as Figure 2 As shown, the method is applied to a battery management system. Specifically, the method includes steps 201 to 202:

[0075] 201. Acquire monitoring data of each battery cell in each battery module, and perform a first fire protection level classification according to the monitoring data and the first fire protection detection data, and then control a first fire protection extinguishing device to start a first fire protection strategy corresponding to the first fire protection level according to the first fire protection level;

[0076] 202. Perform a second fire classification according to the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire classification according to the second fire classification.

[0077] In the embodiments of the present application, the battery management system is connected to the fire detection system, the fire extinguishing system and the battery compartment so that the battery management system can directly communicate and interact with the fire detection system, the fire extinguishing system and the battery compartment. As a result, there is no need to set up an additional fire host, thereby reducing the cost of fire equipment. Furthermore, compared with the communication and interaction between the fire host and other systems, the present application directly communicates and interacts with other systems through the battery management system, and controls the fire extinguishing system to execute corresponding fire strategies based on the judgment results. This can effectively improve the communication speed and efficiency between the systems, improve the detection of abnormal situations during the fire fighting process and the timeliness of fire fighting actions. In addition, the present application also implements a hierarchical fire fighting strategy by respectively setting up two parallel fire fighting schemes for battery cells and battery compartments, thereby improving the rationality and safety of fire fighting.

[0078] In some embodiments, the first fire level classification based on the monitoring data and the first fire detection data includes: obtaining preset early warning thresholds and alarm thresholds corresponding to the monitoring data and the first fire detection data, respectively; and classifying the first fire level based on the comparison results of the monitoring data and the first fire detection data with the corresponding preset early warning thresholds and alarm thresholds, respectively.

[0079] In some embodiments, the first fire detection device includes a pressure sensor arranged in the battery module, the first fire detection data includes pressure sensing data, the monitoring data includes temperature monitoring data and voltage monitoring data, and the first fire level is divided into a first fire warning level and a first fire alarm level; the first fire level is divided according to the comparison results of the monitoring data and the first fire detection data with the corresponding preset warning threshold and alarm threshold, respectively, including: if the temperature monitoring data is within the corresponding temperature warning threshold range, the voltage monitoring data is within the corresponding voltage warning threshold range, and the pressure sensing data is within the corresponding pressure warning threshold range, then the first fire level is determined to be the first fire warning level; if at least two of the temperature monitoring data is within the corresponding temperature alarm threshold range, the voltage monitoring data is within the corresponding voltage alarm threshold range, and the pressure sensing data is within the corresponding alarm threshold range, occur simultaneously, or if the temperature monitoring data and the voltage monitoring data are lost and the pressure sensing data is within the corresponding alarm threshold range, then the first fire level is determined to be the first fire alarm level.

[0080] In some embodiments, the energy storage system includes an energy storage container, the first fire fighting strategy includes a first early warning fire fighting strategy and a first alarm fire fighting strategy, the first fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm and a fire fighting gas cylinder arranged on the energy storage container, and the battery management system is also connected to the exhaust fan, the fire fighting gas cylinder and the circuit breaker and relay in the high-voltage box; the controlling the first fire fighting extinguishing device to start the first fire fighting strategy corresponding to the first fire fighting level according to the first fire fighting level includes: if the first fire fighting level is the first fire early warning level, then according to the first fire early warning level, the first fire fighting extinguishing device is controlled to start the first early warning fire fighting strategy corresponding to the first fire early warning level, the first early warning fire fighting strategy includes starting the exhaust fan, turning on the audible and visual alarm, and disconnecting the circuit breaker and the relay; if the first fire fighting level is the first fire alarm level, then according to the first fire alarm level, the first fire fighting extinguishing device is controlled to start the first alarm fire fighting strategy corresponding to the first fire alarm level, the first alarm fire fighting strategy includes starting the exhaust fan, turning on the audible and visual alarm, turning on the fire fighting gas cylinder and disconnecting the circuit breaker and the relay.

[0081] In some embodiments, the first fire extinguishing device further includes an aerosol disposed within the battery module.

[0082] In some embodiments, the second fire level classification based on the second fire detection data includes: obtaining a preset early warning threshold and an alarm threshold corresponding to the second fire detection data; and classifying the second fire level based on a comparison result between the second fire detection data and the corresponding preset early warning threshold and the alarm threshold.

[0083] In some embodiments, the energy storage system includes an energy storage container, the second fire detection device includes a smoke detector, a combustible gas detector and a temperature detector arranged on the energy storage container, the second fire detection data includes smoke concentration detection data, combustible gas concentration detection data and temperature detection data, and the second fire level is divided into a second fire warning level and a second fire alarm level; the second fire level is divided according to the comparison result of the second fire detection data with the corresponding preset warning threshold and alarm threshold, including: if the smoke concentration detection data is within the corresponding smoke concentration warning threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration warning threshold range, and the temperature detection data is within the corresponding temperature warning threshold range, then the second fire level is determined to be the second fire warning level; if at least two of the smoke concentration detection data is within the corresponding smoke concentration alarm threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration alarm threshold range, and the temperature detection data is within the corresponding temperature alarm threshold range, then the second fire level is determined to be the second fire alarm level.

[0084] In some embodiments, the second fire fighting strategy includes a second early warning fire fighting strategy and a second alarm fire fighting strategy, the second fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm and a fire fighting gas cylinder arranged on the energy storage container, and the battery management system is also connected to the exhaust fan, the fire fighting gas cylinder and the circuit breaker and relay in the high-voltage box; the controlling the second fire fighting extinguishing device to start the second fire fighting strategy corresponding to the second fire fighting level according to the second fire fighting level includes: if the second fire fighting level is the second fire early warning level, then according to the second fire early warning level, the second fire fighting extinguishing device is controlled to start the second early warning fire fighting strategy corresponding to the second fire early warning level, the second early warning fire fighting strategy includes starting the exhaust fan, turning on the audible and visual alarm, and disconnecting the circuit breaker and the relay; if the second fire fighting level is the second fire alarm level, then according to the second fire alarm level, the second fire fighting extinguishing device is controlled to start the second alarm fire fighting strategy corresponding to the second fire alarm level, the second alarm fire fighting strategy includes starting the exhaust fan, turning on the audible and visual alarm, turning on the fire fighting gas cylinder and disconnecting the circuit breaker and the relay.

[0085] It should be noted that the repeated contents in this fire control method and the fire control system in the previous text will not be repeated here. For details, please refer to the relevant instructions in the previous text on the fire control system.

[0086] In addition to the fire control system and fire control method for the energy storage system described above, the embodiment of the present application also provides a battery management system, which includes:

[0087] one or more processors;

[0088] Memory; and

[0089] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to perform the operations of any method described in any of the above fire control method embodiments.

[0090] like Figure 3 As shown, it shows a schematic diagram of the structure of the battery management system involved in the embodiment of the present application, specifically:

[0091] The battery management system may include one or more processors 401 of processing cores, one or more computer-readable storage media storage units 402, a power supply 403, an input unit 404 and other components. Those skilled in the art will appreciate that Figure 3 The battery management system structure shown in the figure does not constitute a limitation on the battery management system, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0092] The processor 401 is the control center of the battery management system. It uses various interfaces and lines to connect various parts of the entire battery management system. By running or executing software programs and / or modules stored in the storage unit 402, and calling the data stored in the storage unit 402, it performs various functions of the battery management system and processes data, thereby monitoring the battery management system as a whole. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0093] The storage unit 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the storage unit 402. The storage unit 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the battery management system, etc. In addition, the storage unit 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the storage unit 402 may also include a memory controller to provide the processor 401 with access to the storage unit 402.

[0094] The battery management system also includes a power supply 403 for supplying power to each component. Preferably, the power supply 403 can be logically connected to the processor 401 through the power management system, so as to manage charging, discharging, power consumption management and other functions through the power management system. The power supply 403 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

[0095] The battery management system may further include an input unit 404, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0096] Although not shown, the battery management system may also include a display unit, etc., which will not be described in detail here. Specifically, in the embodiment of the present application, the processor 401 in the battery management system will load the executable file corresponding to the process of one or more application programs into the storage unit 402 according to the following instructions, and the processor 401 will run the application program stored in the storage unit 402, thereby realizing various functions, as follows:

[0097] Acquire monitoring data of each battery cell in each of the battery modules, and perform a first fire level classification based on the monitoring data and the first fire detection data, and then control the first fire extinguishing device to initiate a first fire strategy corresponding to the first fire level based on the first fire level; perform a second fire level classification based on the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire level based on the second fire level.

[0098] The fire control system for the energy storage system provided in the present application connects the battery management system with the fire detection system, the fire extinguishing system and the battery compartment so that the battery management system can directly communicate and interact with the fire detection system, the fire extinguishing system and the battery compartment. Therefore, there is no need to set up an additional fire host, thereby reducing the cost of fire equipment. Furthermore, compared with the communication and interaction between the fire host and other systems, the present application directly communicates and interacts with other systems through the battery management system, and controls the fire extinguishing system to execute corresponding fire strategies based on the judgment results, which can effectively improve the communication speed and efficiency between the systems, and improve the timeliness of discovering abnormal situations and taking fire actions during the fire fighting process. In addition, the present application also implements a hierarchical fire fighting strategy by respectively setting up two parallel fire fighting schemes for battery cells and battery compartments, thereby improving the rationality and safety of fire fighting.

[0099] To this end, the embodiment of the present application provides a computer-readable storage medium, which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. The computer-readable storage medium stores a plurality of instructions, which can be loaded by a processor to execute the steps of any fire control method provided in the embodiment of the present application. For example, the instruction can execute the following steps:

[0100] Acquire monitoring data of each battery cell in each of the battery modules, and perform a first fire level classification based on the monitoring data and the first fire detection data, and then control the first fire extinguishing device to initiate a first fire strategy corresponding to the first fire level based on the first fire level; perform a second fire level classification based on the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire level based on the second fire level.

[0101] According to one aspect of the present application, a computer program product or a computer program is also provided, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a battery management system reads the computer instructions from the computer-readable storage medium and executes the computer instructions, so that the battery management system executes the methods provided in various optional implementations in the above embodiments.

[0102] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0103] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A fire control system for an energy storage system, characterized in that: The fire control system comprises: a battery management system and a fire detection system and a fire extinguishing system connected to the battery management system, the fire detection system comprises a first fire detection device and a second fire detection device, the fire extinguishing system comprises a first fire extinguishing device and a second fire extinguishing device, and the battery management system is also connected to a plurality of battery modules arranged in a battery compartment; The first fire detection device is configured to collect first fire detection data of the battery module and send the first fire detection data to the battery management system; The second fire detection device is configured to collect second fire detection data in the battery compartment and send the second fire detection data to the battery management system; The battery management system is configured to obtain monitoring data of each battery cell in each of the battery modules, and perform a first fire classification according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start a first fire strategy corresponding to the first fire classification according to the first fire classification; The battery management system is further configured to perform a second fire classification according to the second fire detection data, and control the first fire extinguishing device to initiate a second fire strategy corresponding to the second fire level according to the second fire level.

2. The fire control system for an energy storage system according to claim 1, characterized in that: The performing a first fire classification according to the monitoring data and the first fire detection data includes: Obtaining preset early warning thresholds and alarm thresholds corresponding to the monitoring data and the first fire detection data respectively; A first fire level is divided according to the comparison results of the monitoring data and the first fire detection data with the corresponding preset early warning threshold and alarm threshold.

3. The fire control system for an energy storage system according to claim 2, characterized in that: The first fire detection device includes a pressure sensor disposed in the battery module, the first fire detection data includes pressure sensing data, the monitoring data includes temperature monitoring data and voltage monitoring data, and the first fire level is divided into a first fire warning level and a first fire alarm level; The dividing into the first fire level according to the comparison results of the monitoring data and the first fire detection data with the corresponding preset early warning threshold and alarm threshold respectively includes: If the temperature monitoring data is within the corresponding temperature warning threshold range, the voltage monitoring data is within the corresponding voltage warning threshold range, and the pressure sensing data is within the corresponding pressure warning threshold range, determining that the first fire protection level is the first fire warning level; If at least two of the temperature monitoring data are within the corresponding temperature alarm threshold range, the voltage monitoring data are within the corresponding voltage alarm threshold range, and the pressure sensing data are within the corresponding alarm threshold range, or if the temperature monitoring data and the voltage monitoring data are lost and the pressure sensing data are within the corresponding alarm threshold range, then the first fire protection level is determined to be the first fire alarm level.

4. The fire control system for an energy storage system according to claim 3, characterized in that: The energy storage system includes an energy storage container, the first fire fighting strategy includes a first early warning fire fighting strategy and a first alarm fire fighting strategy, the first fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm, and a fire fighting gas cylinder arranged on the energy storage container, and the battery management system is also connected to the exhaust fan, the fire fighting gas cylinder, and a circuit breaker and a relay in the high-voltage box; The controlling the first fire extinguishing device to start a first fire fighting strategy corresponding to the first fire fighting level according to the first fire fighting level includes: If the first fire protection level is the first fire warning level, then according to the first fire warning level, controlling the first fire extinguishing device to start the first warning fire protection strategy corresponding to the first fire warning level, the first warning fire protection strategy including starting the exhaust fan, turning on the sound and light alarm, and disconnecting the circuit breaker and the relay; If the first fire protection level is the first fire alarm level, then according to the first fire alarm level, the first fire extinguishing device is controlled to start the first alarm fire protection strategy corresponding to the first fire alarm level, and the first alarm fire protection strategy includes starting the exhaust fan, turning on the sound and light alarm, turning on the fire gas cylinder, and disconnecting the circuit breaker and the relay.

5. The fire control system for an energy storage system according to any one of claims 1 to 4, characterized in that: The first fire extinguishing device also includes an aerosol disposed in the battery module.

6. The fire control system for an energy storage system according to claim 1, characterized in that: The performing the second fire protection level classification according to the second fire protection detection data comprises: Obtaining a preset early warning threshold and an alarm threshold corresponding to the second fire detection data; The second fire protection level is divided according to the comparison result of the second fire protection detection data with the corresponding preset early warning threshold and alarm threshold.

7. The fire control system for an energy storage system according to claim 6, characterized in that: The energy storage system includes an energy storage container, the second fire detection device includes a smoke detector, a combustible gas detector and a temperature detector arranged on the energy storage container, the second fire detection data includes smoke concentration detection data, combustible gas concentration detection data and temperature detection data, and the second fire level is divided into a second fire warning level and a second fire alarm level; The second fire level classification according to the comparison result between the second fire detection data and the corresponding preset early warning threshold and alarm threshold includes: If the smoke concentration detection data is within the corresponding smoke concentration warning threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration warning threshold range, and the temperature detection data is within the corresponding temperature warning threshold range, then the second fire protection level is determined to be the second fire warning level; If at least two of the following situations occur simultaneously: the smoke concentration detection data is within the corresponding smoke concentration alarm threshold range, the combustible gas concentration detection data is within the corresponding combustible gas concentration alarm threshold range, and the temperature detection data is within the corresponding temperature alarm threshold range, then the second fire protection level is determined to be the second fire alarm level.

8. The fire control system for an energy storage system according to claim 7, characterized in that: The second fire fighting strategy includes a second early warning fire fighting strategy and a second alarm fire fighting strategy. The second fire fighting extinguishing device includes an exhaust fan, an audible and visual alarm, and a fire fighting gas cylinder arranged on the energy storage container. The battery management system is also connected to the exhaust fan, the fire fighting gas cylinder, and a circuit breaker and a relay in the high-voltage box. The controlling the second fire extinguishing device to start a second fire fighting strategy corresponding to the second fire fighting level according to the second fire fighting level includes: If the second fire fighting level is the second fire warning level, then according to the second fire warning level, controlling the second fire fighting extinguishing device to start the second warning fire fighting strategy corresponding to the second fire warning level, the second warning fire fighting strategy including starting the exhaust fan, turning on the sound and light alarm, and disconnecting the circuit breaker and the relay; If the second fire protection level is the second fire alarm level, then according to the second fire alarm level, the second fire extinguishing device is controlled to start the second alarm fire protection strategy corresponding to the second fire alarm level, and the second alarm fire protection strategy includes starting the exhaust fan, turning on the sound and light alarm, opening the fire gas cylinder, and disconnecting the circuit breaker and the relay.

9. A fire control method for an energy storage system, characterized in that: The method for a battery management system according to any one of claims 1 to 8 comprises: Acquire monitoring data of each battery cell in each of the battery modules, and perform a first fire classification according to the monitoring data and the first fire detection data, and then control the first fire extinguishing device to start a first fire strategy corresponding to the first fire classification according to the first fire classification; A second firefighting level is divided according to the second firefighting detection data, and the first firefighting extinguishing device is controlled to start a second firefighting strategy corresponding to the second firefighting level according to the second firefighting level.

10. A battery management system, characterized in that: The battery management system comprises: one or more processors; Memory; and One or more application programs, wherein the one or more application programs are stored in the memory and are configured to be executed by the processor to implement the steps of the fire control method for an energy storage system as claimed in claim 9.

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