Fire-fighting emergency method of energy storage battery and related device

Abstract

The invention relates to an electrochemical energy storage technology, and particularly discloses a fire-fighting emergency method for an energy storage battery, which comprises the following steps: monitoring the voltage of the energy storage battery, and monitoring the concentration of characteristic gas; judging whether the voltage is not lower than a threshold voltage early warning value or not; if yes, whether the concentration of the characteristic gas is not lower than the corresponding concentration early warning value or not is judged; if yes, battery compartment emergency control measures are started, and whether the voltage is not lower than a thermal runaway high-voltage early warning value or not is judged; if yes, a fire extinguishing device matched with the energy storage battery is started. The method is designed according to the characteristics of voltage and gas during thermal runaway of the lithium battery, fire disasters caused by thermal runaway can be accurately extinguished, time can be bought for rescue equipment through battery compartment emergency control measures, a time window is provided for accident degradation, and unnecessary economic losses caused by false alarm and untimely alarm can be avoided. The invention further provides a fire emergency system, a storage medium and electronic equipment.

Description

Technical Field

[0001] The invention relates to electrochemical energy storage technology, and in particular to a fire emergency method, system, medium and electronic equipment of an energy storage battery. Background Art

[0002] With the continuous deepening of energy transformation, energy storage has become an important support for the high-safety and high-quality development of new power systems. Energy storage power stations installed on the power generation side and the grid side can achieve functions such as peak shaving and valley filling, assisting renewable energy grid connection, emergency power supply, black start and improving power quality. They are important facilities to ensure the stable and efficient operation of the power grid. However, since energy storage batteries are mostly lithium batteries, they have a high risk of fire.

[0003] Research has found that when energy storage batteries are in thermal runaway, side reactions will occur and characteristic gases will be produced, such as H2, CO, CO2, hydrocarbons, etc. Therefore, more advanced existing technologies will monitor the concentration changes of the above-mentioned characteristic gases as a fire guidance, such as issuing a fire alarm or initiating firefighting measures when the concentration of the characteristic gas is not lower than the threshold.

[0004] However, since some characteristic gases are common components of air (such as H2, CO2), and the internal gas composition of energy storage batteries is complex when they are in thermal runaway, the existing gas sensor technology and gas chromatograph technology are difficult to measure the concentration of characteristic gases to truly reflect the thermal runaway state of energy storage batteries. It is easy to cause early warning delays, resulting in untimely fire extinguishing, and false alarms, which may lead to the false initiation of fire-fighting measures and cause serious damage to equipment. Summary of the invention

[0005] The purpose of the embodiments of the present disclosure is to solve the problems in the related art that early warning delays may lead to untimely fire extinguishing, and false alarms may lead to erroneous activation of firefighting measures, causing serious damage to equipment.

[0006] In order to achieve the above objectives, the embodiments of the present disclosure adopt the following technical solutions:

[0007] According to one aspect of the present invention, a fire emergency method of an energy storage battery is provided, comprising the following steps:

[0008] The voltage of the energy storage battery is monitored, and the concentration of characteristic gases in the battery compartment of the energy storage battery is monitored, wherein the characteristic gases are one or more gases released by the energy storage battery during thermal runaway.

[0009] It is determined whether the voltage is not lower than a threshold voltage warning value, where the threshold voltage warning value corresponds to a value when the early thermal runaway voltage measured in a thermal runaway charging test of an energy storage battery of a corresponding model rises and begins to form a platform.

[0010] If the voltage is not lower than the threshold voltage warning value, it is determined whether the concentration of the characteristic gas is not lower than the corresponding concentration warning value. The corresponding concentration warning value is the value of the characteristic gas in the rising stage of concentration measured in the thermal runaway charging test of the energy storage battery of the corresponding model.

[0011] If the concentration of the characteristic gas is not lower than the corresponding concentration warning value, the battery compartment emergency control measures are initiated.

[0012] In some embodiments, if the concentration of the characteristic gas is not lower than the corresponding concentration warning value, the battery compartment emergency control measures are initiated, further comprising:

[0013] Determine whether the voltage is not lower than a thermal runaway high voltage warning value, where the thermal runaway high voltage warning value is a value in a voltage rise stage in the late thermal runaway period measured in a thermal runaway charging test of an energy storage battery of a corresponding model;

[0014] If the voltage is not lower than the thermal runaway high voltage warning value, the fire extinguishing device associated with the energy storage battery is activated.

[0015] In some embodiments, the starting battery compartment emergency control measures include:

[0016] Increase ventilation of the battery compartment; and / or,

[0017] depressurizing the battery compartment; and / or,

[0018] Cut off the power supply of the primary device of the energy storage battery. In some embodiments, the characteristic gas includes a mid-term characteristic gas, and the mid-term characteristic gas is one or more gases whose concentration changes significantly in the mid-term of thermal runaway of the energy storage battery;

[0019] The determining whether the concentration of the characteristic gas is not lower than the corresponding concentration warning value; if so, starting the battery compartment emergency control measures, wherein the characteristic gas is a mid-term characteristic gas, and the starting battery compartment emergency control measures also include: and / or,

[0020] Cut off the power supply of the secondary equipment of the energy storage battery; wherein the secondary equipment does not include equipment for monitoring the concentration of characteristic gas in the battery compartment of the energy storage battery and the voltage of the energy storage battery.

[0021] In some embodiments, the characteristic gas is one or more of H2, CO, CO2, CH4, C2H6, HCL, HF, and SO2, among which HCL, HF, and SO2 are mid-term characteristic gases.

[0022] In some embodiments, the fire emergency method also includes: monitoring smoke in the environment where the battery compartment is located, and initiating fire fighting measures based on the determined smoke conditions; and / or monitoring the temperature above the battery rack, and initiating fire fighting measures based on the determined temperature conditions.

[0023] According to another aspect of the present disclosure, a fire emergency system of an energy storage battery is also provided, including a fire extinguishing device and a monitoring and control device, wherein the fire emergency system is used to implement the steps of the above-mentioned fire emergency method.

[0024] In some embodiments, the fire extinguishing device includes a cluster-level fire extinguishing mechanism and a cabin-level fire extinguishing mechanism, and the fire extinguishing agent filled in the cluster-level fire extinguishing mechanism and the cabin-level fire extinguishing mechanism is perfluorohexanone and / or heptafluoropropane.

[0025] According to another aspect of the present disclosure, a storage medium is also provided, storing a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned fire emergency method are implemented.

[0026] According to another aspect of the present disclosure, an electronic device is provided, comprising at least a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the above-mentioned fire emergency method when executing the computer program in the memory.

[0027] The fire emergency method provided in the embodiment of the present disclosure is designed according to the voltage and gas characteristics of lithium batteries during thermal runaway, so as to realize reasonable control of the fire emergency system. It can not only accurately extinguish fires caused by thermal runaway, but also buy time for rescue equipment through emergency control measures in the battery compartment, provide a window for accident downgrade, and avoid unnecessary economic losses due to false alarms and untimely alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A schematic diagram of the steps of a fire emergency method of an energy storage battery according to an embodiment of the present disclosure;

[0030] Figure 2 A schematic diagram of the steps of a fire emergency method of an energy storage battery according to an embodiment of the present disclosure;

[0031] Figure 3 A schematic diagram of a voltage-time curve of an energy storage battery in a thermal runaway charging test according to an embodiment of the present disclosure;

[0032] Figure 4 It is a schematic diagram of early characteristic gas concentration-time of the energy storage battery in the thermal runaway charging test according to the embodiment of the present disclosure;

[0033] Figure 5 The present invention is a schematic structural diagram of a fire emergency system of an energy storage battery according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Various aspects and features of the present disclosure are described herein with reference to the drawings.

[0035] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0036] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0037] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0038] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0039] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0040] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0041] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0042] Embodiment 1

[0043] The disclosed embodiment of the present invention provides a fire emergency method for energy storage batteries, which is designed for the voltage and gas characteristics of lithium batteries during thermal runaway, and realizes reasonable control of the fire emergency system, avoiding the problem that the traditional method of only detecting gas is prone to delay and error, resulting in untimely fire extinguishing or equipment damage. This embodiment is particularly suitable for the fire environment of energy storage batteries in energy storage power stations on the power generation side and the grid side.

[0044] like Figure 1 As shown, the fire emergency method of the energy storage battery provided by the embodiment of the present disclosure includes the following steps:

[0045] S1: Monitor the voltage of the energy storage battery and monitor the concentration of characteristic gases in the battery compartment of the energy storage battery.

[0046] Studies have shown that during the thermal runaway of energy storage batteries, the voltage will change regularly in a time sequence, and characteristic gases will be released as the thermal runaway progresses. Therefore, monitoring of voltage and characteristic gases can identify the thermal runaway state of energy storage batteries from two different angles, reducing the possibility of false alarms.

[0047] Furthermore, the voltage of the energy storage battery can be monitored by using a battery management system (BMS). Specifically, the battery management system (BMS) can sample and measure the battery voltage at intervals of milliseconds to seconds, and since the battery management system (BMS) is an inherent component of the energy storage battery system, it can control the energy storage battery;

[0048] Alternatively, a voltage sensor, a data acquisition module and a host computer software can be set up on the energy storage battery to monitor the voltage of the energy storage battery. Setting up a voltage sensor can transmit the battery voltage signal, and then use the data acquisition module to collect and digitize these signals and transmit them to the host computer software for monitoring, and can also monitor the battery charging voltage.

[0049] Furthermore, the concentration of characteristic gases in the battery compartment of the energy storage battery is monitored. The characteristic gases are one or more gases released by the energy storage battery during thermal runaway, specifically including one or more characteristic gases such as H2, CO, CO2, CH4, C2H6 released in the early stage of thermal runaway and HCL, HF, SO2 released in the middle stage of thermal runaway.

[0050] Specifically, a concentration monitoring sensor is used to monitor the concentration of the characteristic gas of the battery. And according to the type of characteristic gas to be measured, a suitable concentration monitoring sensor should be selected to monitor the concentration of the characteristic gas of the battery. For example, when detecting H2 and CO, an electrochemical sensor with high sensitivity and selectivity should be selected.

[0051] S2: Determine whether the voltage is not lower than the threshold voltage warning value. The threshold voltage warning value U1 is the corresponding value when the voltage at the early stage of thermal runaway measured in the thermal runaway charging test of the corresponding type of energy storage battery rises and begins to form a platform.

[0052] Specifically, Figure 3 The voltage-time curve of a 100Ah energy storage battery in a thermal runaway charging test is shown. Figure 3 The curve in shows the change of the voltage of the energy storage battery over time under overcharge conditions. Figure 3 On the left, the voltage increases rapidly and slightly before the energy storage battery experiences thermal runaway.

[0053] At t1 = 120s, the voltage forms a platform, the rise slows down, and the voltage stabilizes between 4.38 and 5.06 V. The voltage U1 = 4.38 V at t1 is taken as the threshold voltage warning value. When the voltage of the energy storage battery reaches U1, it can be accurately inferred that the battery is abnormal.

[0054] If it is determined that the voltage is not lower than the threshold voltage warning value, proceed to step S3.

[0055] S3: Determine whether the concentration of the characteristic gas is not lower than the corresponding concentration warning value. The concentration warning value is the value of the characteristic gas at the rising stage measured in the thermal runaway charging test of the corresponding model of energy storage battery.

[0056] Specifically, studies have shown that energy storage batteries will release early characteristic gases such as H2, CO, CO2, CH4, C2H6 in the early stages of thermal runaway, and medium-term characteristic gases such as HCL, HF, SO2 in the middle stages of thermal runaway. As the degree of thermal runaway of the energy storage battery deepens, the concentrations of these characteristic gases will increase accordingly.

[0057] That is to say, if the characteristic gas reaches the above concentration warning value, combined with the judgment of the voltage in step S2, it can be accurately inferred that the energy storage battery has entered a thermal runaway state and needs to be processed. Compared with simply judging that the characteristic gas concentration reaches the threshold, the judgment result of this step has higher accuracy and reliability.

[0058] The following takes H2, CO, and CO2 as examples of three early characteristic gases. Figure 4 The following are specific examples of concentration warning values: Figure 4The voltage-time curve of a 100Ah energy storage battery in a thermal runaway charging test is shown, specifically showing the concentration change of three early characteristic gases, H2, CO, and CO2, over time in an overcharge environment. At t2 = 820s, the concentrations of the three early characteristic gases began to increase rapidly. Therefore, the concentration values ​​of H2, CO, and CO2 corresponding to t2, i.e., C1 = 1720ppm, C2 = 1995ppm, and C3 = 462ppm, are taken as the concentration warning values ​​of H2, CO, and CO2, respectively. The concentration warning values ​​of other types of characteristic gases are taken in a similar way and will not be repeated.

[0059] If the concentration of the detected characteristic gas is not lower than the corresponding concentration warning value, step S4 is performed. Further, this embodiment judges the early characteristic gas and the mid-term characteristic gas respectively, so as to take different battery compartment emergency control measures for energy storage, as described below for details.

[0060] S4: Start the battery compartment emergency control measures (S4a), and determine whether the voltage is not lower than the thermal runaway high voltage warning value (S4b). The thermal runaway high voltage warning value is the value of the voltage rise stage in the late thermal runaway period measured in the thermal runaway charging test of the corresponding model of energy storage battery.

[0061] Furthermore, when it is determined that the concentration of the characteristic gas is not lower than the corresponding concentration warning value, emergency control measures for the battery compartment include: increasing the exhaust volume of the battery compartment; and / or relieving the pressure of the battery compartment; and / or cutting off the power supply of the primary equipment of the energy storage battery.

[0062] The above-mentioned battery compartment emergency control measures can all be controlled by the battery management system (BMS) sending instructions to the corresponding organization, or generating an alarm to notify personnel to perform manual operation.

[0063] Furthermore, increasing the exhaust volume of the battery compartment, that is, automatically starting the strong exhaust fan, can enable the battery compartment to cool down quickly, prevent the battery compartment from deforming, and dilute the concentration of combustible gases and toxic gases.

[0064] The battery compartment is depressurized, that is, the pressure relief valve is opened by using the pressure relief device of the energy storage battery. This prevents the gas generated by thermal runaway from causing the battery compartment to explode due to excessive pressure, and can discharge the generated harmful and corrosive gas to the processing equipment through the pressure relief channel, avoiding poisoning accidents during later maintenance, and is also conducive to protecting the integrity of the battery compartment, avoiding economic losses to a certain extent.

[0065] The method of cutting off the power supply of the primary device of the energy storage battery specifically includes:

[0066] Cut off the electrical connection between the battery pack itself and the power part of the battery management system (BMS) and the external charging and discharging circuit to prevent the thermal runaway of the energy storage battery from worsening.

[0067] Cut off the converter connecting the energy storage battery to the grid or load to ensure the safety of the grid and energy storage system.

[0068] Cut off the DC bus associated with the energy storage battery, the fuse and the circuit breaker related to the DC bus, and prevent the overcurrent from causing the fuse on the DC bus to melt and cause the fault to expand further.

[0069] Further, as described at the end of step S3 above, in the fire emergency method provided in the embodiment of the present disclosure, early characteristic gases and mid-term characteristic gases are judged separately, so as to take different battery compartment emergency control measures for energy storage.

[0070] Specifically, Figure 2 As shown, when it is determined that the concentration of early characteristic gases such as H2, CO, CO2, CH4, and C2H6 is not lower than the concentration warning value (S301), there is a possibility of false alarm, and the battery compartment emergency control measures (S401a) recorded above need to be executed, and an alarm needs to be issued to notify relevant personnel to check the situation;

[0071] like Figure 2 As shown, when it is determined that the concentration of mid-term characteristic gases such as HCL, HF, and SO2 is not lower than the concentration warning value (S302), the possibility of false alarm is extremely low at this time, but there is still a certain window time before the thermal energy storage battery loses control and causes a fire. Therefore, in addition to executing the battery compartment emergency control measures as recorded above, it is also necessary to cut off the power supply of the secondary equipment of the energy storage battery to prevent the disaster caused by the energy storage battery from spreading to the secondary equipment. At the same time, an alarm needs to be issued to notify relevant personnel to rescue the equipment. Compared with the traditional fire emergency method of directly adopting fire extinguishing measures, the root method can maximize the time for rescuing equipment and prevent fire extinguishing measures from causing irreversible damage to the equipment.

[0072] Specifically, the method of cutting off the power supply of the secondary device of the energy storage battery includes:

[0073] Cut off the power supply of relay protection and measurement and control equipment, such as main cabinet, telecontrol workstation, network equipment cabinet, protection and measurement and control cabinet, relay protection and fault information management cabinet, automatic device screen, video monitoring cabinet and other equipment, to prevent drastic changes in electrical parameters due to thermal runaway of energy storage batteries, which may exceed the normal working range of these equipment and cause overload and damage to the equipment.

[0074] Cut off the power supply of communication equipment, such as SDH equipment cabinets, network equipment cabinets, patch panels, CAN (Controller Area Network) bus equipment used for internal communication in the battery compartment, modems used for remote communication, Ethernet switches, etc., to prevent these devices from being damaged by high temperature and electromagnetic pulses.

[0075] It is worth noting that the equipment for monitoring the concentration of characteristic gas in the battery compartment of the energy storage battery and the voltage of the energy storage battery is not cut off, so that the status of the energy storage battery can continue to be monitored to ensure that other steps in the fire emergency method can be carried out.

[0076] Cut off the power supply of the 220V battery rack to prevent the spread of fire and reduce the risk of electric shock.

[0077] Cut off the power supply of various servers and engineer stations, large-screen display systems, operating tables, printers, etc. arranged in the central control room to prevent these devices from being damaged by abnormal operation due to heat.

[0078] If it is detected that the concentration of the characteristic gas is not lower than the corresponding concentration warning value, it is also necessary to determine whether the voltage is not lower than the thermal runaway high voltage warning value. If the voltage is not lower than the thermal runaway high voltage warning value, proceed to step S5.

[0079] Specifically, the thermal runaway high voltage warning value is a value taken in the voltage rising stage in the late stage of thermal runaway measured in a thermal runaway charging test of an energy storage battery of a corresponding model.

[0080] For example, Figure 3 The curve shown in shows that at t3 = 1270s, the thermal runaway further develops, causing the voltage of the energy storage battery to enter the second rising stage. After t3, the voltage of the energy storage battery rises rapidly. A voltage value U2 = 7.03V after t3 is taken as the thermal runaway high-voltage warning value. If it is determined that the voltage of the energy storage battery is not lower than U2 = 7.03V, step S5 can be performed.

[0081] S5: Start the fire extinguishing device that comes with the energy storage battery.

[0082] That is to say, Figure 1 , Figure 2 As shown, after judging that the early characteristic gas or the mid-term characteristic gas is not lower than the concentration warning value, the battery compartment emergency control measures are taken first. Then, by judging whether the voltage is not lower than the thermal runaway high-voltage warning value, it is decided whether the thermal runaway of the energy storage battery is serious and the fire extinguishing device must be activated to deal with the situation that the monitoring of the characteristic gas may be inaccurate.

[0083] Specifically, the fire extinguishing device matched with the energy storage battery can be activated, which can be connected to the prefabricated cabin fire host through the fire sensor signal, and according to the fire control strategy, the fire fighting facilities in the cabin can be linked and controlled to achieve it.

[0084] In one embodiment, the fire emergency method of the embodiment of the present disclosure further includes monitoring smoke in the environment where the battery compartment is located, and initiating fire fighting measures based on the situation of the smoke.

[0085] Specifically, in the operating environment of the energy storage battery system, the specially equipped high-sensitivity smoke detector will immediately convert this dangerous signal into an electrical signal once it detects the generation of smoke. This signal is transmitted to the battery management system (BMS) in real time through a reliable communication line. After receiving the signal, the battery management system (BMS) quickly analyzes and processes it, and initiates a series of subsequent fire-fighting measures according to the preset program, such as issuing sound and light alarms to notify on-site personnel, preparing to start the fire-fighting device, etc., to ensure the safe and stable operation of the energy storage system and avoid further expansion of fire accidents.

[0086] In one embodiment, the temperature above the battery rack is monitored, and firefighting measures are initiated based on the determined temperature conditions.

[0087] Specifically, for example, the generally acceptable working range of lithium batteries is -20℃~60℃, so a temperature detection alarm range of 50℃ to 90℃ is set. Specifically, a temperature sensor is used to monitor the temperature above the battery rack. Since the heat between the temperature sensor and the battery rack is mainly conducted by air, the first-level alarm temperature is designed to be 50℃~55℃, aiming to detect temperature anomalies at an early stage; the second-level alarm temperature is 55℃~60℃, further strengthening the early warning; the third-level alarm temperature is 60℃~90℃, so that timely countermeasures can be taken when the temperature rises sharply, effectively preventing safety hazards such as thermal runaway of lithium batteries caused by high temperature, and ensuring the stability and safety of the entire energy storage system.

[0088] To sum up, the fire emergency method provided by the embodiment of the present disclosure is designed according to the voltage and gas characteristics of lithium batteries during thermal runaway, so as to realize reasonable control of the fire emergency system. It can not only accurately extinguish fires caused by thermal runaway, but also buy time for rescue equipment through emergency control measures in the battery compartment, provide a window for accident downgrade, and avoid unnecessary economic losses due to false alarms and untimely alarms.

[0089] Embodiment 2

[0090] The embodiment of the present disclosure provides a fire emergency system of an energy storage battery, which is applied to the energy storage battery and includes a fire extinguishing device 1 and a monitoring and control device 2. The fire emergency system is used to implement the steps of the fire emergency method described in the first embodiment.

[0091] Specifically, Figure 5 As shown, the fire extinguishing device 1 includes: a cluster-level fire extinguishing mechanism 11 and a cabin-level fire extinguishing mechanism 12 .

[0092] The cluster-level fire extinguishing mechanism 11 includes a main pipe installed above the battery cluster, and a branch pipe corresponding to each battery group is led out from the main pipe. A nozzle pointing to the battery group is arranged at the end of the branch pipe. Such a shape enables the fire extinguishing agent to be sprayed evenly. The main pipe is a pressure-resistant sealed pipe connected to a storage container, and the storage container is filled with fire extinguishing agent. The cluster-level fire extinguishing mechanism 11 can ensure the fire safety of the energy storage battery cluster.

[0093] The cabin-level fire extinguishing mechanism 12 includes a pipe network arranged around the battery compartment, from which multiple branch pipes are evenly drawn or multiple through holes are opened for installing sprinklers. Such hard installation can fully cover the battery compartment for fire extinguishing. The end of the pipe network is connected to a storage container through a pipeline, and the storage container is filled with a fire extinguishing agent. The cabin-level fire extinguishing mechanism 12 can ensure the fire safety of the energy storage battery compartment.

[0094] The cluster-level fire extinguishing mechanism 11 and the cabin-level fire extinguishing mechanism 12 are respectively equipped with manual and automatic starting units, wherein the automatic starting unit is associated with the monitoring and control device 2 and can be started according to the instruction of the monitoring and control device 2 to implement the fire emergency method described in the first embodiment.

[0095] Furthermore, the fire extinguishing agent filled in the storage containers of the cluster-level fire extinguishing mechanism 11 and the cabin-level fire extinguishing mechanism 12 is perfluorohexanone and / or heptafluoropropane, which has the advantages of high fire extinguishing efficiency, little damage to equipment, and environmental friendliness.

[0096] like Figure 5 As shown, the monitoring and control device 2 includes: a voltage monitoring module 21, a characteristic gas monitoring module 22, a smoke sensing control module 23, a temperature sensing control module 24, and an alarm module 25. The monitoring and control device 2 is used to control the battery compartment and the fire extinguishing device 1 according to the fire emergency method provided in the first embodiment to implement the above-mentioned fire emergency method.

[0097] Embodiment 3

[0098] The embodiment of the present disclosure provides a storage medium storing a computer program. When the computer program is executed by a processor, the steps of the fire emergency method described in the first embodiment are implemented.

[0099] Embodiment 4

[0100] An embodiment of the present disclosure provides an electronic device, which includes at least a memory and a processor. The memory stores a computer program, and the processor implements the steps of the fire emergency method described in the first embodiment when executing the computer program in the memory.

[0101] The storage medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0102] The storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: obtains at least two Internet Protocol addresses; sends a node evaluation request including at least two Internet Protocol addresses to a node evaluation device, wherein the node evaluation device selects an Internet Protocol address from the at least two Internet Protocol addresses and returns it; receives the Internet Protocol address returned by the node evaluation device; wherein the obtained Internet Protocol address indicates an edge node in a content distribution network.

[0103] Alternatively, the storage medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device: receives a node evaluation request including at least two Internet Protocol addresses; selects an Internet Protocol address from the at least two Internet Protocol addresses; and returns the selected Internet Protocol address; wherein the received Internet Protocol address indicates an edge node in a content distribution network.

[0104] Computer program code for performing operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the passenger computer, partially on the passenger computer, as a separate software package, partially on the passenger computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the passenger computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0105] It should be noted that the storage medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any storage medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0106] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0107] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, limit the unit itself.

[0108] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0109] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0110] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0111] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0112] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0113] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A fire emergency method for energy storage batteries, characterized in that: The following steps are involved: Monitoring the voltage of the energy storage battery and monitoring the concentration of characteristic gases in the battery compartment of the energy storage battery, wherein the characteristic gases are one or more gases released by the energy storage battery during thermal runaway; Determine whether the voltage is not lower than a threshold voltage warning value, where the threshold voltage warning value corresponds to a value when the voltage at an early stage of thermal runaway measured in a thermal runaway charging test of an energy storage battery of a corresponding model rises and begins to form a platform; If the voltage is not lower than the threshold voltage warning value, determine whether the concentration of the characteristic gas is not lower than the corresponding concentration warning value, where the corresponding concentration warning value is the value of the characteristic gas at the rising stage measured in the thermal runaway charging test of the energy storage battery of the corresponding model; If the concentration of the characteristic gas is not lower than the corresponding concentration warning value, the battery compartment emergency control measures are initiated.

2. The fire emergency method according to claim 1, characterized in that: If the concentration of the characteristic gas is not lower than the corresponding concentration warning value, the battery compartment emergency control measures are initiated, further comprising: Determine whether the voltage is not lower than a thermal runaway high-voltage warning value, where the thermal runaway high-voltage warning value is a value in a voltage rise stage in the late thermal runaway period measured in a thermal runaway charging test of an energy storage battery of a corresponding model; If the voltage is not lower than the thermal runaway high voltage warning value, the fire extinguishing device associated with the energy storage battery is activated.

3. The fire emergency method according to claim 1, characterized in that: in, The emergency control measures for the starting battery compartment include: Increase ventilation of the battery compartment; and / or, depressurizing the battery compartment; and / or, Cut off the power supply to the primary equipment of the energy storage battery.

4. The fire emergency method according to claim 3, characterized in that: in, The characteristic gas is a mid-term characteristic gas, and the mid-term characteristic gas is one or more gases in which the concentration of the energy storage battery changes significantly in the mid-term of thermal runaway; the emergency control measures for starting the battery compartment also include: and / or, Cut off the power supply of the secondary equipment of the energy storage battery; wherein the secondary equipment does not include equipment for monitoring the concentration of characteristic gas in the battery compartment of the energy storage battery and the voltage of the energy storage battery.

5. The fire emergency method according to claim 1, characterized in that: in, The characteristic gas is one or more of H2, CO, CO2, CH4, C2H6, HCL, HF, and SO2, among which HCL, HF, and SO2 are medium-term characteristic gases.

6. The fire emergency method according to claim 1, characterized in that: The fire emergency method also includes: Monitor the smoke in the battery compartment environment and initiate firefighting measures based on the smoke detected; and / or, Monitor the temperature above the battery rack and initiate firefighting measures based on the determined temperature conditions.

7. A fire emergency system of energy storage battery, characterized in that: Comprising a fire extinguishing device and a monitoring and control device, the fire emergency system is used to implement the steps of the fire emergency method described in any one of claims 1 to 6.

8. The fire emergency system according to claim 7, characterized in that: The fire extinguishing device comprises a cluster-level fire extinguishing mechanism and a cabin-level fire extinguishing mechanism, and the fire extinguishing agent filled in the cluster-level fire extinguishing mechanism and the cabin-level fire extinguishing mechanism is perfluorohexanone and / or heptafluoropropane.

9. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the fire emergency method according to any one of claims 1 to 6 are implemented.

10. An electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the steps of the fire emergency method according to any one of claims 1 to 6 when executing the computer program on the memory.

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