Thermal runaway localization method, apparatus, and system

Abstract

This application provides a thermal runaway location method, apparatus, and system, applied to a thermal runaway location system, including at least one addressing module, each addressing module being connected to multiple battery packs. The method includes: receiving a thermal runaway trigger signal corresponding to a first battery pack based on the addressing module, and converting the thermal runaway trigger signal into a thermal runaway location signal, wherein the first battery pack is any one of the multiple battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack; determining the thermal runaway state of the first battery pack in response to the thermal runaway location signal; if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, acquiring the current operating data of the first battery pack; if the current operating data indicates that the first battery pack has experienced thermal runaway, locating the first battery pack based on the location information, thereby improving the location efficiency and accuracy of the thermal runaway battery pack.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a method, apparatus and system for locating thermal runaway. Background Technology

[0002] With the rapid development of renewable energy, the importance of energy storage technology is becoming increasingly prominent. Energy storage batteries are widely used in people's lives and production today, such as in electric vehicles and thermal runaway positioning systems. Currently, with the increasing demand for energy storage batteries, the energy density requirements are getting higher and higher, and the frequency of thermal runaway in energy storage batteries is also increasing. During thermal runaway, energy storage batteries release a large amount of heat and generate a large amount of gas, causing the battery temperature and internal gas pressure to rise sharply, leading to increased safety risks.

[0003] In related technologies, thermal runaway localization systems acquire thermal runaway data by transmitting signals between temperature sensors and acoustic localization technology. However, acoustic localization technology is easily affected by external sound sources, leading to inaccurate thermal runaway localization. Summary of the Invention

[0004] This application provides a thermal runaway location method, apparatus, and system, which improves the location efficiency and accuracy of thermal runaway battery packs.

[0005] In a first aspect, this application provides a thermal runaway localization method applied to a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each of the addressing modules being connected to a plurality of battery packs, the method comprising:

[0006] The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0007] In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined;

[0008] If the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then the current operating data of the first battery pack is obtained;

[0009] If the current operating data indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information.

[0010] The solution provided in this application converts the received thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack through an addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, without being affected by ambient sound sources. Compared with sound location technology, this method can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0011] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0012] In some optional embodiments, each battery pack includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, the method further includes:

[0013] The first temperature data of the first battery pack is collected based on the first temperature detector;

[0014] If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector.

[0015] If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated.

[0016] The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

[0017] The solution provided in this application monitors the temperature data of the first battery pack using a first temperature detector and monitors the pressure data inside the first battery pack using the on / off status of a first explosion-proof valve. If the temperature data of the first battery pack is greater than a preset temperature threshold, a first temperature trigger signal is generated. If the pressure data inside the first battery pack is greater than a preset pressure threshold, the first explosion-proof valve is triggered to switch its on / off status, generating a first pressure trigger signal. By using two trigger signals to monitor and determine whether the first battery pack has experienced thermal runaway, the system prevents misjudgments caused by a single trigger signal. This provides a prerequisite trigger condition for locating the thermal runaway battery pack and helps improve the accuracy of determining the thermal runaway battery pack.

[0018] In some optional embodiments, the step of receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal includes:

[0019] Based on the addressing module receiving the first temperature trigger signal and the first pressure trigger signal;

[0020] The addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information.

[0021] The addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

[0022] The solution provided in this application involves an addressing module that decodes the encoded first temperature trigger signal and the first pressure trigger signal to obtain a first temperature positioning signal carrying first position information and a first pressure positioning signal carrying second position information. This provides basic data for subsequent verification of whether the first battery pack is a thermal runaway battery pack, which is beneficial to improving thermal runaway positioning efficiency.

[0023] In some optional embodiments, the thermal runaway localization system further includes a control module, and each of the addressing modules is connected to the control module. The method further includes:

[0024] The addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and the control module uploads the first temperature positioning signal and the first pressure positioning signal.

[0025] The step of determining the thermal runaway state of the first battery pack in response to the thermal runaway location signal includes:

[0026] In response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained.

[0027] Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

[0028] The solution provided in this application determines the triggering time of the first temperature trigger signal and the first pressure trigger signal. If the triggering times of the two signals differ significantly, it may be a misjudgment by the temperature detector and / or the explosion-proof valve, in which case it cannot be determined that the first battery pack has experienced thermal runaway. When the triggering times of the two signals differ slightly or trigger simultaneously, it can be determined that the first battery pack has experienced thermal runaway. The control module performs a first-level judgment on whether the first battery pack has experienced thermal runaway, thereby improving the accuracy of the judgment on the thermal runaway battery pack.

[0029] In some optional embodiments, determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time includes:

[0030] If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway.

[0031] If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

[0032] In some optional embodiments, the method further includes:

[0033] If at least two of the battery packs experience thermal runaway, the at least two battery packs are located sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0034] The solution provided in this application, if at least two battery packs experience thermal runaway, will locate them sequentially according to the time sequence, thereby avoiding misallocation and waste of fire-fighting resources. It can also prioritize the response to the battery pack that experiences thermal runaway earliest, and control it in the early stages of thermal runaway, thus preventing multiple battery packs from experiencing continuous runaway due to the location sequence.

[0035] In some optional embodiments, the method further includes:

[0036] Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module;

[0037] Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined.

[0038] If the third and fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

[0039] The solution provided in this application requires the control module to not only determine whether the trigger times of the temperature positioning signal and the pressure positioning signal are close to being triggered simultaneously, but also to determine whether the temperature positioning signal and the pressure positioning signal are signals triggered by the same battery pack, thereby further improving the accuracy of the judgment of thermal runaway battery packs.

[0040] In some optional embodiments, the thermal runaway location system further includes a monitoring subsystem. After locating the first battery pack based on the location information if the current operating data indicates that thermal runaway has occurred, the method further includes:

[0041] If the first battery pack experiences thermal runaway, a thermal runaway location alarm signal carrying the location information is generated.

[0042] The thermal runaway location alarm signal is uploaded to the monitoring subsystem for recording.

[0043] The solution provided in this application uploads the thermal runaway location alarm signal corresponding to the first battery pack identified as having thermal runaway to the monitoring subsystem. This allows the location and number of thermal runaway battery packs to be viewed through the records, and provides a rapid response time for the fire protection system and maintenance personnel.

[0044] In some optional embodiments, after obtaining the current operating data of the first battery pack if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, the method further includes:

[0045] If the current operating data indicates that the first battery pack has not experienced thermal runaway, a calibration prompt signal is sent back to the control module to prompt the control module to calibrate the thermal runaway location signal.

[0046] The solution provided in this application, after determining that the first battery pack has not experienced thermal runaway based on the current operating data, can determine that the thermal runaway of the first battery pack determined based on the thermal runaway location signal is a misjudgment. At this time, a calibration prompt signal can be used to prompt the thermal runaway location signal to be calibrated in order to avoid the recurrence of misjudgment.

[0047] Secondly, this application also provides a thermal runaway localization method, applied to a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each of the addressing modules being connected to a plurality of battery packs, the method comprising:

[0048] The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0049] In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined;

[0050] If the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information.

[0051] The solution provided in this application converts the received thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack through an addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, without being affected by ambient sound sources. Compared with sound location technology, this method can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0052] In some optional embodiments, each battery pack includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, the method further includes:

[0053] Acquire the first temperature data of the first battery pack collected by the first temperature detector;

[0054] If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector.

[0055] If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated.

[0056] The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

[0057] In some optional embodiments, the step of receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal includes:

[0058] Based on the addressing module receiving the first temperature trigger signal and the first pressure trigger signal;

[0059] The addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information.

[0060] The addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

[0061] In some optional embodiments, the thermal runaway localization system further includes a control module, and each of the addressing modules is connected to the control module. The method further includes:

[0062] The addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and the control module uploads the first temperature positioning signal and the first pressure positioning signal.

[0063] The step of determining the thermal runaway state of the first battery pack in response to the thermal runaway location signal includes:

[0064] In response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained.

[0065] Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

[0066] In some optional embodiments, determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time includes:

[0067] If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway.

[0068] If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

[0069] In some optional embodiments, the method further includes:

[0070] If at least two of the battery packs experience thermal runaway, the at least two battery packs are located sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0071] In some optional embodiments, the method further includes:

[0072] Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module;

[0073] Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined.

[0074] If the third and fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

[0075] Thirdly, this application provides a thermal runaway location device for use in a thermal runaway location system, the thermal runaway location system including at least one addressing module, each of the addressing modules being connected to a plurality of battery packs, the device comprising:

[0076] The first processing module is configured to receive a thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0077] The first determining module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal;

[0078] The first acquisition module is used to acquire the current operating data of the first battery pack if the thermal runaway state indicates that the first battery pack has experienced thermal runaway.

[0079] The first positioning module is used to locate the first battery pack based on the location information if the current operating data indicates that the first battery pack has experienced thermal runaway.

[0080] Fourthly, this application also provides a thermal runaway location device for use in a thermal runaway location system, the thermal runaway location system including at least one addressing module, each of the addressing modules being connected to a plurality of battery packs, the device comprising:

[0081] The second processing module is used to receive the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0082] The second determining module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal;

[0083] The second positioning module is used to locate the first battery pack based on the location information if the thermal runaway state indicates that the first battery pack has experienced thermal runaway.

[0084] Fifthly, this application provides a thermal runaway localization system, comprising:

[0085] At least one addressing module is provided, and each addressing module is connected to a plurality of battery packs. The addressing module is used to receive a thermal runaway trigger signal corresponding to a battery pack and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the plurality of battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0086] The control module is connected to each of the addressing modules. The control module is used to receive the thermal runaway location signal sent by the addressing module and upload the thermal runaway location signal.

[0087] A battery management module is connected to the control module and multiple battery packs. The battery management module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal; if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, the module acquires the current operating data of the first battery pack; if the current operating data indicates that the first battery pack has experienced thermal runaway, the module locates the first battery pack based on the location information.

[0088] In some alternative embodiments, each of the battery packs includes a temperature detector and an explosion-proof valve;

[0089] The first temperature detector is used to collect the first temperature data of the first battery pack; if the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal carrying the first position information encoded by the first temperature detector is generated, and the first temperature trigger signal is sent to the addressing module.

[0090] The first explosion-proof valve is used to generate a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve if the first explosion-proof valve switches from the closed state to the open state, and sends the first pressure trigger signal to the addressing module.

[0091] In some optional embodiments, the addressing module is further configured to:

[0092] Receive the first temperature trigger signal and the first pressure trigger signal;

[0093] The first temperature trigger signal is decoded to obtain a first temperature positioning signal carrying the decoded first position information;

[0094] The first pressure trigger signal is decoded to obtain a first pressure positioning signal carrying the decoded second position information;

[0095] The first temperature positioning signal and the first pressure positioning signal are sent to the control module.

[0096] In some optional embodiments, the control module is further configured to: receive and upload the first temperature positioning signal and the first pressure positioning signal;

[0097] The battery management module is also used for:

[0098] In response to the first temperature positioning signal and the first pressure positioning signal, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained.

[0099] Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

[0100] In some optional embodiments, the battery management module is further configured to:

[0101] If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway.

[0102] If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

[0103] In some optional embodiments, the battery management module is further configured to:

[0104] If at least two of the battery packs catch fire, the at least two battery packs are located sequentially according to the time sequence of the detector signals generated by the at least two battery packs.

[0105] In some optional embodiments, the battery management module is further configured to:

[0106] Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module;

[0107] Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined.

[0108] If the third and fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

[0109] In some optional embodiments, the thermal runaway localization system further includes a monitoring subsystem, and the battery management module is further used for:

[0110] If the first battery pack experiences thermal runaway, a thermal runaway location alarm signal carrying the location information is generated.

[0111] The thermal runaway location alarm signal is uploaded to the monitoring subsystem for recording.

[0112] In some optional embodiments, the battery management module is further configured to:

[0113] If the current operating data indicates that the first battery pack has not experienced thermal runaway, a calibration prompt signal is sent back to the control module to prompt the control module to calibrate the thermal runaway location signal.

[0114] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0115] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0116] Figure 1 This is a schematic diagram of the system architecture of a thermal runaway localization system provided in some embodiments of this application.

[0117] Figure 2 This is a flowchart illustrating a thermal runaway localization method provided in some embodiments of this application.

[0118] Figure 3 This is a schematic diagram of a scenario for the thermal runaway localization method provided in some embodiments of this application.

[0119] Figure 4 This is a detailed flowchart illustrating the thermal runaway localization method provided in some embodiments of this application.

[0120] Figure 5 This is a flowchart illustrating a thermal runaway localization method provided in other embodiments of this application.

[0121] Figure 6This is a structural block diagram of a thermal runaway location device provided in some embodiments of this application.

[0122] Figure 7 This is a structural block diagram of a thermal runaway location device provided in other embodiments of this application.

[0123] Figure 8 This is a structural block diagram of a thermal runaway localization system provided in some embodiments of this application.

[0124] Figure 9 This is a computer-readable storage medium provided in some embodiments of this application for storing or carrying program code that implements the thermal runaway localization method provided in the embodiments of this application.

[0125] Figure 10 This is a computer program product provided in some embodiments of this application for storing or carrying program code that implements the thermal runaway localization method provided in the embodiments of this application. Detailed Implementation

[0126] To make the features and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0127] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0128] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0129] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0130] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0131] Furthermore, in the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0132] In related technologies, thermal runaway localization systems acquire thermal runaway data by transmitting signals between temperature sensors and acoustic localization technology. However, acoustic localization technology is easily affected by external sound sources, leading to inaccurate thermal runaway localization.

[0133] To address the aforementioned issues, the thermal runaway location method, apparatus, and system provided in this application receive a thermal runaway trigger signal corresponding to the first battery pack based on an addressing module, convert the thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack, and determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, unaffected by ambient sound sources. Compared with sound-based location technology, this method can improve the location efficiency and accuracy of thermal runaway battery packs.

[0134] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0135] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0136] Please see Figure 1 , Figure 1 This is a schematic diagram of the system architecture of a thermal runaway location system provided in some embodiments of this application. The thermal runaway location system 10 may include a battery pack 11, an addressing module 12, a control module 13, a battery management module 14, and a monitoring subsystem 15.

[0137] Among them, the battery pack 11 is the basic energy storage unit of the thermal runaway location system. It is composed of several cells connected in series and parallel, which can realize the storage and release of electrical energy and is the basic hardware for realizing the energy storage function.

[0138] The battery pack 11 can be any of the following, including but not limited to, lithium-ion batteries, lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, zinc-silver batteries, iron-chromium flow batteries, and vanadium redox flow batteries. For example, a lithium-ion battery pack is a battery pack composed of multiple ternary lithium battery cells or lithium iron phosphate battery cells, and can be used in energy storage power stations, electric vehicles, and other scenarios. As the core carrier of energy storage, the battery pack 11 contains battery cells, a battery management unit, protection circuits, etc., and can be used to monitor the voltage, current, temperature, and other status parameters of the battery pack 11 itself.

[0139] The thermal runaway location system 10 may include multiple battery packs 11, which can be connected by wiring to form a battery cluster. The thermal runaway location system 10 can be configured with multiple battery clusters. Each battery cluster is equipped with a corresponding battery management submodule. The battery packs 11 can transmit battery status information to the battery management submodule and receive charging and discharging control commands from the battery management submodule.

[0140] The addressing module 12 can be used to identify and parse the location information of devices such as the battery pack 11. For example, in scenarios such as thermal runaway, the addressing module 12 can determine the specific location of the trigger signal source corresponding to the battery pack 11. The addressing module 12 can receive signals related to the battery pack 11, such as thermal runaway trigger signals, and parse the location information of the battery pack corresponding to the thermal runaway trigger signal according to pre-set encoding rules and mapping relationships.

[0141] Specifically, one end of the addressing module 12 is connected to multiple battery packs 11 to receive trigger signals from the battery packs 11; the other end of the addressing module 12 is connected to the control module 13 to send the decoded thermal runaway location signal to the control module 13.

[0142] The control module 13 is the core control device of the fire protection system. It can acquire signals and issue control commands. Specifically, the control module 13 can receive thermal runaway-related signals and issue fire control commands according to preset logic. For example, the control module 13 can be a fire alarm controller in a building fire protection system; in an energy storage power station scenario, the control module 13 can be a fire alarm control panel adapted for fire suppression.

[0143] The control module 13 has functions such as signal reception, processing, logic judgment, and command sending. It can receive thermal runaway location signals sent by the addressing module 12. The control module 13 can issue control commands to the fire protection system according to the preset fire protection strategy.

[0144] One end of the control module 13 is connected to the addressing module 12 to receive signals transmitted by the addressing module 12; the other end of the control module 13 is connected to the battery management system 14. When a fire risk such as thermal runaway occurs in the thermal runaway location system, the control module 13 promptly receives signals, responds quickly, and initiates corresponding fire-fighting measures to ensure safety.

[0145] The battery management module 14 centrally manages and coordinates the multiple battery management sub-modules connected to the battery pack 11, enabling comprehensive monitoring and control of the battery status of the entire thermal runaway localization system. One end of the battery management module 14 is connected to multiple battery management sub-modules to receive battery pack status data; the other end of the battery management module 14 is connected to the monitoring subsystem 15 to send battery pack status information to the monitoring subsystem 15, and can also receive control commands issued by the management subsystem 15.

[0146] The monitoring subsystem 15 can be a power plant monitoring system within an energy management system, used for overall energy management, monitoring, and scheduling of the energy storage power plant. For example, in the energy management system of a large-scale integrated power plant, the monitoring subsystem 15 can coordinate the operation of photovoltaic, wind power, and energy storage equipment to achieve reasonable allocation and scheduling of electrical energy.

[0147] The monitoring subsystem 15 is connected to the battery management module 14 and is used to receive the status data of the battery pack and send control commands to the battery management module 14 to realize the overall management and control of the energy storage power station. Specifically, the monitoring subsystem 15 has functions such as data acquisition, monitoring, analysis, control, and optimization. By acquiring the operating status information of the energy storage power station, and based on grid demand and power station operating strategies, it performs energy scheduling and control of the energy storage power station.

[0148] It should be noted that the above hardware architecture is shown only for the purpose of understanding this application, and the implementation of this application is not limited in any way. The implementation of this application can also be applied to other equivalent hardware architectures that are obvious variations.

[0149] Please see Figure 2 , Figure 2 This is a flowchart illustrating a thermal runaway localization method provided in some embodiments of this application. In specific embodiments, the thermal runaway control method can be applied to, for example... Figure 1 The battery management module 14 in the thermal runaway localization system 10 shown below will be used as an example to explain... Figure 2 The process shown is described in detail. The thermal runaway localization system 10 may include at least one addressing module 12, and each addressing module 12 is connected to a plurality of battery packs 11. The specific process of the thermal runaway localization method is as follows:

[0150] S101, the thermal runaway trigger signal corresponding to the first battery pack is received based on the addressing module, and the thermal runaway trigger signal is converted into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0151] In this embodiment of the application, during the operation of the multiple battery packs in the thermal runaway localization system, each battery pack may experience thermal runaway. This embodiment takes the first battery pack as an example for illustration. The first battery pack is any one of the multiple battery packs. It can be understood that each of the multiple battery packs can use the thermal runaway localization method of the first battery pack during the thermal runaway localization process.

[0152] In some implementations, please refer to Figure 3 , Figure 3 This is a schematic diagram of a scenario illustrating the thermal runaway localization method provided in some embodiments of this application. Taking the first battery pack as an example, the first battery pack 20 may include a battery pack housing 21, multiple battery cells 22, a temperature detector 23, and an explosion-proof valve 24.

[0153] Multiple battery cells 22 can be arranged side by side, and a temperature detector 23 is located on the top of the battery pack housing 21 to detect the temperature data of the multiple battery cells 22. If the temperature detector 23 detects that the temperature data of at least one battery cell 22 is greater than a preset temperature threshold, a temperature trigger signal is generated.

[0154] When the first battery pack 20 is in normal operation, the explosion-proof valve 24 is in the closed state. If the first cell 221 in the first battery pack 20 experiences thermal runaway, the first cell 221 will generate gas 222. The generated gas 222 will increase the internal pressure of the battery pack housing 21. Since the internal pressure of the battery pack housing 21 is greater than the preset pressure threshold, the explosion-proof valve 24 needs to be switched from the closed state to the open state so that the gas 222 can be discharged to the outside of the battery pack housing 21 through the explosion-proof valve 24 along the exhaust path 223. At this time, the explosion-proof valve 24 generates a pressure trigger signal.

[0155] Because the first battery pack is equipped with a temperature detector 23 and an explosion-proof valve 24, it will generate corresponding temperature and pressure trigger signals when thermal runaway occurs. It is not a single trigger signal; the thermal runaway trigger signal includes both temperature and pressure trigger signals. It should be noted that both the temperature and pressure trigger signals must be triggered simultaneously to confirm thermal runaway in the first battery pack. If only one trigger signal (either temperature or pressure) is generated, false alarms from the temperature sensor or malfunctions of the explosion-proof valve may occur, instead of indicating actual thermal runaway. This avoids false triggers caused by external interference such as ambient temperature fluctuations or mechanical vibrations, thus laying the foundation for the effectiveness of the subsequent addressing module in receiving the thermal runaway trigger signal.

[0156] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack from the addressing module, the first temperature data of the first battery pack is collected based on the first temperature detector. If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal carrying first position information encoded by the first temperature detector is generated. If the first explosion-proof valve switches from a closed state to an open state, a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve is generated. The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

[0157] Specifically, the first temperature detector continuously collects the ambient temperature inside the first battery pack, i.e., the first temperature data. The object of the collection is the high-temperature flue gas that diffuses after thermal runaway of the battery cells inside the first battery pack. Therefore, the first temperature data can directly reflect whether there is a risk of thermal runaway inside the battery pack. A preset temperature threshold can be set in advance, such as 80℃, 85℃, or 90℃. Taking a preset temperature threshold of 80℃ as an example, if the first temperature data is greater than 80℃, the temperature of the first battery pack is determined to be abnormal, triggering the first temperature detector to generate a first temperature trigger signal based on the first temperature data.

[0158] It should be noted that the first temperature trigger signal needs to carry the first location information encoded by the first temperature detector. This first location information is encoded by the first temperature detector and thus bound to the physical location of the first battery pack, ensuring that the first battery pack can be located based on the first location information.

[0159] Specifically, the switching signal node corresponding to the first explosion-proof valve continuously monitors the opening and closing status of the explosion-proof valve. The opening and closing status of the explosion-proof valve corresponds to changes in the pressure data within the first battery pack; that is, changes in the pressure data within the first battery pack will affect the opening and closing status of the explosion-proof valve. Specifically, when the first explosion-proof valve is detected to switch from the closed state to the open state, it is determined that thermal runaway of the battery cells within the first battery pack has generated a large amount of gas, causing abnormal pressure within the first battery pack. This triggers the opening and closing signal node of the explosion-proof valve to generate a first pressure trigger signal based on the pressure data change.

[0160] It should be noted that the first pressure trigger signal must carry the second position information after the first explosion-proof valve is coded. The explosion-proof valve code and the first temperature detector code correspond to the same battery pack to ensure that the position information of the first temperature trigger signal and the first pressure trigger signal can be matched, providing a basis for the subsequent addressing module to verify the validity of the signal.

[0161] Understandably, by monitoring the temperature data of the first battery pack through a first temperature detector and monitoring the pressure data inside the first battery pack through the on / off status of the first explosion-proof valve, if the temperature data of the first battery pack is greater than a preset temperature threshold, a first temperature trigger signal is generated; if the pressure data inside the first battery pack is greater than a preset pressure threshold, the first explosion-proof valve is triggered to switch its on / off status, generating a first pressure trigger signal. By using two trigger signals to monitor and determine whether the first battery pack has experienced thermal runaway, the system prevents misjudgments caused by a single trigger signal, thus providing a prerequisite trigger condition for locating the thermal runaway battery pack and improving the accuracy of the determination of the thermal runaway battery pack.

[0162] Optionally, the encoding format of the first and second location information may include the battery pack number and detector type, such as first battery pack - first temperature detector, second battery pack - second explosion-proof valve, etc. The battery pack number portion of the first temperature detector code and the first explosion-proof valve code must be consistent, so that both the first and second location information can point to the first battery pack, ensuring that the addressing module can identify whether the first temperature trigger signal and the first pressure trigger signal originate from the same battery pack through the encoding.

[0163] In some embodiments, each addressing module is connected to multiple battery packs, and each battery pack contains a detector and an explosion-proof valve. Each addressing module can correspond to a battery cluster, and the multiple temperature detectors and explosion-proof valves included in each battery cluster can be connected in a ring network. For example, signals triggered by the first temperature detector and the first explosion-proof valve in the first battery pack can be transmitted to the addressing module corresponding to that battery cluster through the signal ring network within the battery cluster corresponding to the first battery pack. The ring network connection ensures that even if a break occurs in the signal ring network loop, the transmission of the trigger signals will not be affected. In other words, even if a segment of the signal ring network transmission link fails, both types of trigger signals can still be transmitted to the addressing module through the backup path of the ring network, ensuring the reliability of signal transmission.

[0164] In some embodiments, the step of receiving a thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal may specifically include: receiving a first temperature trigger signal and a first pressure trigger signal based on the addressing module; decoding the first temperature trigger signal through the addressing module to obtain a first temperature location signal carrying decoded first location information; and decoding the first pressure trigger signal through the addressing module to obtain a first pressure location signal carrying decoded second location information.

[0165] Specifically, after receiving the first temperature trigger signal, the addressing module performs signal parsing, stripping the encoded fields from the first temperature trigger signal, filtering out redundant information during signal transmission such as transmission check codes, and extracting the first temperature detector code. Then, it performs table lookup matching, comparing the extracted first temperature detector code with the code-position mapping table, integrating the first position information, signal reception time, and signal type to generate the first temperature positioning signal. Similarly, the decoding process of the addressing module for the first pressure trigger signal is the same as that for the first temperature trigger signal, and will not be described again here.

[0166] Understandably, the addressing module decodes the encoded first temperature trigger signal and the first pressure trigger signal to obtain a first temperature positioning signal and a first pressure positioning signal carrying first position information. This provides basic data for subsequent verification of whether the first battery pack is a thermal runaway battery pack, which is beneficial to improving the efficiency of thermal runaway positioning.

[0167] In some embodiments, the thermal runaway location system may further include a control module, with each addressing module connected to the control module. The addressing modules send a first temperature location signal and a first pressure location signal to the control module. That is, the addressing modules can not only decode the trigger signal to obtain the position signal, but also transmit the decoded location signal to the control module. After receiving the first temperature location signal and the first pressure location signal from the addressing modules, the control module can upload them, specifically to the battery management module, so that the battery module can verify whether thermal runaway has occurred in the first battery pack based on the first temperature location signal and the first pressure location signal.

[0168] In addition, the control module can generate a fire alarm signal based on the first temperature positioning signal and the first pressure positioning signal, and send the fire alarm signal to the fire protection system. The fire protection system can perform corresponding fire extinguishing operations on the first battery pack based on the fire alarm signal.

[0169] S102, in response to the thermal runaway location signal, determines the thermal runaway state of the first battery pack.

[0170] In this embodiment, in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained; based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

[0171] It is understandable that the first temperature positioning signal and the first pressure positioning signal received by the battery management module are signals uploaded by the control module. The first temperature positioning signal and the first pressure positioning signal have been decoded by the addressing module. Based on the first position information and the second position information, the two types of thermal runaway positioning signals are determined to carry standardized signals of the physical position information of the first battery pack and the detector triggering attributes. This ensures that the battery management module can directly extract key information such as trigger time and position from the positioning signals, laying the foundation for subsequent state determination.

[0172] After receiving the thermal runaway location signal, the battery management module verifies whether the location information of the first battery pack carried in the first temperature location signal and the first pressure location signal is completely consistent to perform address matching verification. If the location information carried by the two types of thermal runaway location signals is inconsistent, the signal source is determined to be abnormal; if the location information carried by the two types of thermal runaway location signals is consistent, it is determined that the two types of thermal runaway location signals originate from the first battery pack, and the trigger time extraction step is initiated.

[0173] Specifically, after confirming the location information match, the battery management module extracts the first trigger time of the first temperature trigger signal from the first temperature positioning signal. The first trigger time corresponds to the moment when the first temperature detector is triggered by high-temperature flue gas. It also extracts the second trigger time of the first pressure trigger signal from the first pressure positioning signal. The second trigger time corresponds to the moment when the first explosion-proof valve is triggered to switch from the closed state to the open state due to the gas pressure exceeding the preset pressure threshold.

[0174] Understandably, judging the trigger times of the first temperature trigger signal and the first pressure trigger signal reveals that if their trigger times differ significantly, it may indicate a misjudgment by the temperature detector and / or the explosion-proof valve, making it impossible to determine if the first battery pack has experienced thermal runaway. However, if their trigger times differ slightly or trigger simultaneously, it can be determined that the first battery pack has experienced thermal runaway, allowing for a first-level judgment on whether thermal runaway has occurred, thereby improving the accuracy of the judgment regarding thermal runaway battery packs.

[0175] In some embodiments, the step of determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time may include: if the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway; if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

[0176] It should be noted that there is a temporal correlation between the first temperature trigger signal and the first pressure trigger signal. The corresponding first trigger time and second trigger time interval are extremely short. Under normal circumstances, this time interval is only the time difference of the physical reaction of thermal runaway. If the first battery pack actually experiences thermal runaway, the difference between the first trigger time and the second trigger time will be less than the preset time threshold, which is consistent with the physical laws of thermal runaway. If the thermal runaway of the first battery pack is determined to be a false trigger scenario, even if the first temperature trigger signal and the first pressure trigger signal originate from the same battery pack, the difference in the trigger time interval will be greater than or equal to the preset time threshold. Therefore, the judgment logic based on comparing the time difference between the first trigger time and the second trigger time with the preset time threshold can ensure that the judgment result conforms to the physical characteristics of thermal runaway and avoid the risk of false alarms.

[0177] It should be noted that thermal runaway of the first battery pack refers to a violent exothermic reaction caused by faults such as internal short circuits, overcharging, and high temperatures in the cells inside the first battery pack, which generates high-temperature fumes and causes the explosion-proof valve to open, thereby triggering an irreversible runaway state of the temperature detector and explosion-proof valve inside the first battery pack.

[0178] Specifically, the runaway cells within the first battery pack release a large amount of heat, forming high-temperature thermal runaway fumes. The fumes temperature reaches the preset temperature threshold of the temperature detector, such as 80°C. At this point, the sudden increase in internal pressure and temperature of the first battery pack causes the explosion-proof valve to trigger its switch signal node to open and release gas. In this embodiment, if the temperature inside the first battery pack reaches the preset temperature threshold and the pressure exceeds the preset pressure threshold, then thermal runaway of the first battery pack is determined to have occurred.

[0179] In an optional embodiment, if the time difference between the first trigger time and the second trigger time is less than a preset time threshold, it indicates that the triggering sequence of the first temperature trigger signal and the first pressure trigger signal conforms to the physical sequence of thermal runaway, and the two types of trigger signals originate from the same battery pack. This can eliminate situations such as false triggering by a single detector or environmental interference, thereby determining that the first battery pack has a real risk of thermal runaway.

[0180] Once thermal runaway of the first battery pack is confirmed, an action signal, such as a fire extinguishing operation, can be sent to the single-pack fire extinguishing device in the fire protection system corresponding to the first battery pack, thereby achieving precise fire extinguishing.

[0181] In an optional embodiment, if the time difference between the first trigger time and the second trigger time is greater than or equal to a preset time threshold, it indicates that the triggering sequence of the first temperature trigger signal and the first pressure trigger signal does not conform to the physical timing sequence of thermal runaway, thereby determining that the first battery pack has not experienced thermal runaway. To avoid false triggering and activation of the fire suppression system, the fire suppression action will not be triggered if the first battery pack has not experienced thermal runaway. Operations such as signal storage and anomaly marking can be performed to temporarily store the thermal runaway location signal and send a false trigger warning signal. The maintenance personnel can then analyze the cause of the false trigger, which not only avoids the impact of false alarms but also provides a basis for system maintenance, improving the reliability and maintainability of the thermal runaway location system.

[0182] In some embodiments, in response to the control module uploading a second temperature positioning signal and a second pressure positioning signal, the trigger source of the second temperature positioning signal and the second pressure positioning signal is determined based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal; if the third position information and the fourth position information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

[0183] Understandably, the battery management module not only needs to determine whether the trigger times of the temperature positioning signal and the pressure positioning signal are close to being triggered simultaneously, but also needs to determine whether the temperature positioning signal and the pressure positioning signal are signals triggered by the same battery pack, thereby further improving the accuracy of the judgment of thermal runaway battery packs.

[0184] Specifically, the control module receives the second temperature positioning signal and the second pressure positioning signal sent by the addressing module, and uploads them to the battery management module. The battery management module responds to these signals by extracting a third location information from the second temperature positioning signal and a fourth location information from the second pressure positioning signal. Both the third and fourth location information include the battery pack number and the detector type. Based on this information, the module determines whether the triggering sources of the second temperature and pressure positioning signals are consistent. For example, if the third location information is "second battery pack - second temperature detector" and the fourth location information is "second battery pack - second explosion-proof valve," then the triggering sources of the second temperature and pressure positioning signals are consistent. If the triggering sources are inconsistent, the second temperature and pressure positioning signals are marked as invalid signals to avoid misjudgments of thermal runaway positioning due to signal mixing.

[0185] S103, if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then obtain the current operating data of the first battery pack.

[0186] In some embodiments, the battery management module has preliminarily determined that the first battery pack has experienced thermal runaway based on the thermal runaway state and triggered a single-pack fire suppression action, such as activating the fire suppression components of the first battery pack. Furthermore, the battery management module needs to perform secondary verification by combining its own monitored operational data, such as cell voltage, current, and internal temperature trends of the first battery pack. The acquired current operational data refers to the real-time operational data of the first battery pack, such as real-time cell voltage and real-time current.

[0187] Specifically, if the battery management module detects thermal runaway characteristics such as a sudden voltage drop or abnormal current fluctuation in the first battery pack, which is consistent with the initial judgment result based on the thermal runaway state, then the thermal runaway of the first battery pack is finally confirmed. If the current operating data detected by the battery management module is normal, data acquisition is paused and anomaly investigation is initiated to avoid invalid data collection and inaccurate thermal runaway location due to misjudgment in the initial verification.

[0188] S104, if the current operating data indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information.

[0189] In this embodiment, after the battery management module performs a preliminary verification based on the location information of the first battery pack and the thermal runaway state determination result, the battery management module can perform a secondary verification by combining the current operating data of the first battery pack monitored by itself. After confirming that the first battery pack has indeed experienced thermal runaway, the location information is synchronized to the monitoring subsystem. The monitoring subsystem will then output the location information in a visual manner, intuitively displaying the specific location of the first battery pack, ensuring that maintenance personnel and the fire protection system can quickly obtain the accurate location of the first battery pack.

[0190] In some embodiments, multiple thermal runaway battery pack trigger points can be detected during location monitoring, improving location accuracy and increasing fault tolerance. Specifically, if at least two battery packs experience thermal runaway, the at least two battery packs are located sequentially based on the chronological order of their thermal runaway trigger signals.

[0191] Understandably, if at least two battery packs experience thermal runaway, they should be located sequentially according to their chronological order. This would prevent misallocation and waste of firefighting resources, and allow priority to be given to the battery pack that experiences thermal runaway earliest, enabling control in the early stages of thermal runaway and preventing multiple battery packs from experiencing consecutive runaways due to the order of locating them.

[0192] Specifically, by centrally receiving and extracting the time of thermal runaway trigger signals, the trigger time and location information of each thermal runaway trigger signal are obtained, thus forming a set of associated data of trigger time and location information; the control module sends the location information and trigger time of each battery pack to the battery management module in the order of trigger time; the battery management module locates each battery pack sequentially based on the obtained order of trigger time, thereby avoiding multiple trigger points that may prevent maintenance personnel from distinguishing priorities and misjudging the severity of the fire.

[0193] In some embodiments, the thermal runaway location system further includes a monitoring subsystem, which, after locating the first battery pack based on location information if current operating data indicates that the first battery pack has experienced thermal runaway, may further include: generating a thermal runaway location alarm signal carrying location information if the first battery pack has experienced thermal runaway; and uploading the thermal runaway location alarm signal to the monitoring subsystem for recording.

[0194] Understandably, the thermal runaway location alarm signal corresponding to the first battery pack identified as having thermal runaway is uploaded to the monitoring subsystem, so that the location and number of thermal runaway battery packs can be viewed by recording, and the fire protection system and maintenance personnel can respond quickly.

[0195] In some embodiments, if the current operating data indicates that the first battery pack has not experienced thermal runaway, a calibration prompt signal is sent back to the control module to prompt the control module to calibrate the thermal runaway location signal.

[0196] Understandably, after determining from the current operating data that the first battery pack has not experienced thermal runaway, it can be concluded that the thermal runaway of the first battery pack determined based on the thermal runaway location signal is a misjudgment. At this point, a calibration prompt signal can be used to prompt the thermal runaway location signal to be calibrated in order to avoid misjudgment again, ensure the accuracy of subsequent location signals, avoid invalid fire-fighting actions, and ensure the reliability of the system's judgment.

[0197] As can be seen from the above, in this embodiment, the received thermal runaway trigger signal is converted into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be realized based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0198] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0199] To better illustrate the thermal runaway localization schemes in the foregoing embodiments, this application also provides a refined thermal runaway localization method. Please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a detailed flowchart illustrating a thermal runaway localization method provided in some embodiments of this application, which includes the following steps:

[0200] S201, a first temperature trigger signal is generated based on the first temperature detector, carrying the first position information encoded by the first temperature detector.

[0201] S202, a first pressure trigger signal is generated based on the first explosion-proof valve, carrying the second position information after the first explosion-proof valve is encoded.

[0202] S203, send the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0203] S204, the addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information.

[0204] S205, the addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

[0205] S206, the addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and the control module uploads the first temperature positioning signal and the first pressure positioning signal.

[0206] S207, responding to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, and obtaining the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal.

[0207] S208, based on the first trigger time and the second trigger time, determine the thermal runaway state of the first battery pack.

[0208] S209, if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then obtain the current operating data of the first battery pack.

[0209] S210, if the current operating data indicates that the first battery pack has experienced thermal runaway, the first battery pack is located based on the location information.

[0210] As can be seen from the above, the received thermal runaway trigger signal is converted into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be realized based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0211] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0212] Please see Figure 5 , Figure 5 This is a flowchart illustrating a thermal runaway localization method provided in other embodiments of this application. In specific embodiments, the thermal runaway control method can be applied to, for example... Figure 1 The battery management module 14 in the thermal runaway localization system 10 shown below will be used as an example to explain... Figure 5 The process shown is described in detail. The thermal runaway localization system 10 may include at least one addressing module 12, and each addressing module 12 is connected to a plurality of battery packs 11. The specific process of the thermal runaway localization method is as follows:

[0213] S301, the thermal runaway trigger signal corresponding to the first battery pack is received based on the addressing module, and the thermal runaway trigger signal is converted into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0214] In this embodiment, each battery pack includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, the method further includes: acquiring first temperature data of the first battery pack collected by the first temperature detector; if the first temperature data is greater than a preset temperature threshold, generating a first temperature trigger signal carrying first position information encoded by the first temperature detector; if the first explosion-proof valve switches from a closed state to an open state, generating a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve; and sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0215] In some embodiments, the step of receiving a thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal may include: receiving a first temperature trigger signal and a first pressure trigger signal based on the addressing module; decoding the first temperature trigger signal through the addressing module to obtain a first temperature location signal carrying decoded first location information; and decoding the first pressure trigger signal through the addressing module to obtain a first pressure location signal carrying decoded second location information.

[0216] For a detailed description of step S301, please refer to the description of step S201 in the above embodiments, which will not be repeated here.

[0217] S302, in response to the thermal runaway location signal, determines the thermal runaway state of the first battery pack.

[0218] In some embodiments, the thermal runaway location system further includes a control module, and each addressing module is connected to the control module. The addressing modules send a first temperature location signal and a first pressure location signal to the control module, and the control module uploads the first temperature location signal and the first pressure location signal based on the information received.

[0219] In some embodiments, in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained; based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

[0220] Optionally, the step of determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time may include: if the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway; if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

[0221] In some embodiments, the response control module uploads a second temperature positioning signal and a second pressure positioning signal; based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the trigger source of the second temperature positioning signal and the second pressure positioning signal is determined; if the third position information and the fourth position information indicate that the second temperature detector and the second explosion-proof valve both belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

[0222] For a detailed description of step S302, please refer to the description of step S202 in the above embodiments, which will not be repeated here.

[0223] S303, if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information.

[0224] In some embodiments, if at least two of the multiple battery packs experience thermal runaway, the at least two battery packs are located sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0225] It should be noted that the specific description of locating the first battery pack based on location information in step S303 can be found in the description of step S204 in the above embodiments, and will not be repeated here.

[0226] As can be seen from the above, the received thermal runaway trigger signal is converted into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be realized based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0227] It should be understood that the sequence number of each step in the foregoing embodiments of this application does not imply the order of execution of the steps. The execution order of each step should be determined by its function and internal logic, and should not constitute a unique limitation on the implementation process of the embodiments of this application.

[0228] Based on the same inventive concept, embodiments of this application also provide related products for implementing the above methods. It should be understood that the implementation solutions proposed by the related products for solving the problems are similar to the above methods.

[0229] This application also provides a thermal runaway localization device. Please refer to... Figure 6 , Figure 6 This is a structural block diagram of a thermal runaway location device provided in some embodiments of this application. The thermal runaway location device 400 can be applied to a thermal runaway location system, which includes at least one addressing module, each addressing module being connected to multiple battery packs. The thermal runaway location device 400 may include a first processing module 401, a first determining module 402, a first acquiring module 403, and a first location module 404, as detailed below:

[0230] The first processing module 401 is used to receive the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0231] The first determining module 402 is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway positioning signal;

[0232] The first acquisition module 403 is used to acquire the current operating data of the first battery pack if the thermal runaway state indicates that the first battery pack has experienced thermal runaway.

[0233] The first positioning module 404 is used to locate the first battery pack based on location information if the current operating data indicates that the first battery pack has experienced thermal runaway.

[0234] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve. The thermal runaway positioning device 400 may further include a first trigger module, which can be used to: collect first temperature data of the first battery pack based on the first temperature detector; if the first temperature data is greater than a preset temperature threshold, generate a first temperature trigger signal carrying first position information encoded by the first temperature detector; if the first explosion-proof valve switches from a closed state to an open state, generate a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve; and send the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0235] In some embodiments, the first processing module 401 may further be used to: receive a first temperature trigger signal and a first pressure trigger signal based on the addressing module; decode the first temperature trigger signal through the addressing module to obtain a first temperature positioning signal carrying decoded first position information; and decode the first pressure trigger signal through the addressing module to obtain a first pressure positioning signal carrying decoded second position information.

[0236] In some embodiments, the thermal runaway location system further includes a control module, and each addressing module is connected to the control module. The first processing module 401 can also be used to: send a first temperature location signal and a first pressure location signal to the control module through the addressing module, and upload the first temperature location signal and the first pressure location signal based on the control module.

[0237] The first determining module 402 can also be used to: respond to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, obtain the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal, and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal; and determine the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

[0238] In some embodiments, the first determining module 402 can also be used to: determine that the first battery pack has thermal runaway if the difference between the first trigger time and the second trigger time is less than a preset time threshold; and determine that the first battery pack has not thermal runaway if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold.

[0239] In some embodiments, the thermal runaway location device 400 may further include a third location module, which may be used to: if at least two battery packs among a plurality of battery packs experience thermal runaway, locate the at least two battery packs sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0240] In some embodiments, the thermal runaway location device 400 may further include a first verification module, which may be used to: respond to a second temperature location signal and a second pressure location signal uploaded by a control module; determine the triggering source of the second temperature location signal and the second pressure location signal based on the third position information of the second temperature detector carried by the second temperature location signal and the fourth position information of the second explosion-proof valve carried by the second pressure location signal; and determine the thermal runaway state of the second battery pack if the third position information and the fourth position information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack.

[0241] In some embodiments, the thermal runaway location system further includes a monitoring subsystem, and the thermal runaway location device 400 may further include a first uploading module, which can be used to: generate a thermal runaway location alarm signal carrying location information if the first battery pack experiences thermal runaway; and upload the thermal runaway location alarm signal to the monitoring subsystem for recording.

[0242] In some embodiments, the thermal runaway location device 400 may further include a first prompting module, which may be used to send a calibration prompting signal to the control module if the current operating data indicates that the first battery pack has not experienced thermal runaway, so as to prompt the control module to calibrate the thermal runaway location signal.

[0243] It should be noted that the thermal runaway location device provided in this application embodiment and the thermal runaway location method in the above embodiment belong to the same concept. Any of the methods provided in the thermal runaway location method embodiment can be run on the thermal runaway location device. For details of its implementation process, please refer to the thermal runaway location method embodiment, which will not be repeated here.

[0244] In this embodiment, the thermal runaway location device 400 converts the received thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0245] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0246] Accordingly, this application also provides another thermal runaway localization device. Please refer to [link to relevant documentation]. Figure 7 , Figure 7 This is a structural block diagram of a thermal runaway location device provided in other embodiments of this application. The thermal runaway location device 400 can be applied to a thermal runaway location system, which includes at least one addressing module, each addressing module being connected to multiple battery packs. The thermal runaway location device 400 may include a second processing module 501, a second determining module 502, and a second location module 503, as detailed below:

[0247] The second processing module 501 is used to receive the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0248] The second determining module 502 is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway positioning signal;

[0249] The second positioning module 503 is used to locate the first battery pack based on its location information if the thermal runaway state indicates that the first battery pack has experienced thermal runaway.

[0250] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve. The thermal runaway positioning device 500 may further include a second trigger module, which can be used to: collect first temperature data of the first battery pack based on the first temperature detector; if the first temperature data is greater than a preset temperature threshold, generate a first temperature trigger signal carrying first position information encoded by the first temperature detector; if the first explosion-proof valve switches from a closed state to an open state, generate a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve; and send the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0251] In some embodiments, the second processing module 501 may further be used to: receive a first temperature trigger signal and a first pressure trigger signal based on the addressing module; decode the first temperature trigger signal through the addressing module to obtain a first temperature positioning signal carrying decoded first position information; and decode the first pressure trigger signal through the addressing module to obtain a first pressure positioning signal carrying decoded second position information.

[0252] In some embodiments, the thermal runaway location system further includes a control module, wherein each addressing module is connected to the control module, and sends a first temperature location signal and a first pressure location signal to the control module through the addressing module, and uploads the first temperature location signal and the first pressure location signal based on the control module; the second determining module 502 can also be used to: in response to the first temperature location signal and the first pressure location signal uploaded by the control module, obtain a first trigger time of a first temperature trigger signal corresponding to the first temperature location signal, and a second trigger time of a first pressure trigger signal corresponding to the first pressure location signal; and determine the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

[0253] In some embodiments, the second determining module 502 can also be used to: determine that the first battery pack has experienced thermal runaway if the difference between the first trigger time and the second trigger time is less than a preset time threshold; and determine that the first battery pack has not experienced thermal runaway if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold.

[0254] In some embodiments, the thermal runaway location device 400 may further include a fourth location module, which may be used to: if at least two battery packs among a plurality of battery packs experience thermal runaway, locate the at least two battery packs sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0255] In some embodiments, the thermal runaway location device 400 may further include a second verification module, which may be used to: respond to a second temperature location signal and a second pressure location signal uploaded by the control module; determine the triggering source of the second temperature location signal and the second pressure location signal based on the third position information of the second temperature detector carried by the second temperature location signal and the fourth position information of the second explosion-proof valve carried by the second pressure location signal; and determine the thermal runaway state of the second battery pack if the third position information and the fourth position information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack.

[0256] It should be noted that the thermal runaway location device provided in this application embodiment and the thermal runaway location method in the above embodiment belong to the same concept. Any of the methods provided in the thermal runaway location method embodiment can be run on the thermal runaway location device. For details of its implementation process, please refer to the thermal runaway location method embodiment, which will not be repeated here.

[0257] In this embodiment, the thermal runaway location device 400 converts the received thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0258] Accordingly, this application also provides a thermal runaway localization system, please refer to the following embodiments. Figure 1 The thermal runaway location system 10 includes at least one addressing module 12, a control module 13, and a battery management module 14.

[0259] Each addressing module 12 is connected to multiple battery packs. The addressing module 12 is used to receive a thermal runaway trigger signal corresponding to a battery pack and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs, and the thermal runaway location signal carries the location information of the first battery pack.

[0260] Each addressing module 12 is connected to the control module 13, which is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal.

[0261] The battery management module 14 is connected to the control module 13 and multiple battery packs. If the thermal runaway state indicates that the first battery pack has thermal runaway, the battery management module 14 is used to obtain the current operating data of the first battery pack; if the current operating data indicates that the first battery pack has thermal runaway, the battery management module 14 is used to locate the first battery pack based on the location information.

[0262] As can be seen from the above, the received thermal runaway trigger signal is converted into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be realized based on the location information, without being disturbed by ambient sound sources. Compared with the location method of sound location technology, it can improve the location efficiency and accuracy of the thermal runaway battery pack.

[0263] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0264] In addition, this application also provides a thermal runaway localization system. Please refer to [link to relevant documentation]. Figure 8 , Figure 8 This is a structural block diagram of a thermal runaway localization system provided in some embodiments of this application. The thermal runaway localization system 600 includes a processor 601 and a memory 602. The processor 601 and the memory 602 are electrically connected.

[0265] The processor 601 is the control center of the thermal runaway location system 600. It connects various parts of the thermal runaway location system through various interfaces and lines. By running or calling computer programs stored in memory 602 and calling data stored in memory 602, it executes various functions of the thermal runaway location system and processes data, thereby performing overall monitoring of the thermal runaway location system.

[0266] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the computer programs and modules stored in the memory 602. The memory 602 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function, etc.; the data storage area may store data created based on the use of the thermal runaway localization system, etc.

[0267] Furthermore, memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, memory 602 may also include a memory controller to provide processor 601 with access to memory 602.

[0268] In this embodiment, the processor 601 in the thermal runaway localization system 600 loads the instructions corresponding to the processes of one or more computer programs into the memory 602 according to the following steps, and the processor 601 runs the computer programs stored in the memory 602 to realize various functions. Optionally, as follows:

[0269] The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0270] In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined;

[0271] If the thermal runaway status indicates that the first battery pack has experienced thermal runaway, then the current operating data of the first battery pack is obtained;

[0272] If the current operating data indicates that the first battery pack has experienced thermal runaway, the location of the first battery pack is determined based on the location information.

[0273] Optional, as follows:

[0274] The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack.

[0275] In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined;

[0276] If the thermal runaway status indicates that the first battery pack has experienced thermal runaway, the first battery pack is located based on the location information.

[0277] Please refer to Figure 9 This diagram illustrates a structural block diagram of a computer-readable storage medium provided in an embodiment of this application. The computer-readable storage medium 700 stores program code 701, which can be called by a processor to execute the methods described in the above method embodiments.

[0278] The computer-readable storage medium 700 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Optionally, the computer-readable storage medium 700 includes a non-transitory computer-readable storage medium. The computer-readable storage medium 700 has storage space for program code 701 that performs any of the method steps described above. This program code can be read from or written to one or more computer program products. The program code 701 may be compressed, for example, in a suitable form.

[0279] Since the instructions stored in the storage medium can execute the steps of any of the thermal runaway localization methods provided in the embodiments of this application, the beneficial effects that any of the thermal runaway localization methods provided in the embodiments of this application can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.

[0280] Please refer to Figure 10 This diagram illustrates a structural block diagram of a computer program product according to an embodiment of this application. The computer program product 800 includes a computer program / instructions 801, which is stored in a computer-readable storage medium of a computer device. When the computer program product 800 runs on the computer device, the processor of the computer device reads the computer program / instructions 801 from the computer-readable storage medium, and executes the computer program / instructions 801, causing the computer device to perform the methods described in the above method embodiments.

[0281] The solution provided in this embodiment converts the received thermal runaway trigger signal into a thermal runaway location signal carrying the location information of the first battery pack through the addressing module. If the first battery pack experiences thermal runaway, the location of the first battery pack can be achieved based on the location information, without being affected by ambient sound sources. Compared with the location method of sound positioning technology, this can improve the positioning efficiency and accuracy of the thermal runaway battery pack.

[0282] Furthermore, based on the determination that the first battery pack has experienced thermal runaway through the thermal runaway location signal, the current operating data of the first battery pack is monitored to determine whether the first battery pack has actually experienced thermal runaway. This reduces the risk of misjudgment of the thermal runaway location signal, provides a prerequisite for locating the thermal runaway battery pack, and further improves the location efficiency and accuracy of the thermal runaway battery pack.

[0283] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0284] For the thermal runaway localization device of this application embodiment, its functional modules can be integrated into a processing chip, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0285] The thermal runaway localization method, apparatus, and system provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The above embodiments are only for the purpose of helping to understand the method and its core ideas; at the same time, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for locating thermal runaway, characterized in that, An application in a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each addressing module being connected to a plurality of battery packs, the method comprising: The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack. In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then the current operating data of the first battery pack is obtained; If the current operating data indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information; Each of the battery packs includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, the method further includes: The first temperature data of the first battery pack is collected based on the first temperature detector; If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector. If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated. The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

2. The thermal runaway localization method according to claim 1, characterized in that, The step of receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal includes: Based on the addressing module receiving the first temperature trigger signal and the first pressure trigger signal; The addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information. The addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

3. The thermal runaway localization method according to claim 2, characterized in that, The thermal runaway localization system further includes a control module, and each of the addressing modules is connected to the control module. The method further includes: The addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and the control module uploads the first temperature positioning signal and the first pressure positioning signal. The step of determining the thermal runaway state of the first battery pack in response to the thermal runaway location signal includes: In response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained. Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

4. The thermal runaway localization method according to claim 3, characterized in that, The step of determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time includes: If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway. If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

5. The thermal runaway localization method according to claim 1, characterized in that, The method further includes: If at least two of the battery packs experience thermal runaway, the at least two battery packs are located sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

6. The thermal runaway localization method according to claim 3, characterized in that, The method further includes: Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined. If the third location information and the fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

7. The thermal runaway localization method according to claim 1, characterized in that, The thermal runaway location system further includes a monitoring subsystem. After locating the first battery pack based on the location information if the current operating data indicates that thermal runaway has occurred, the method further includes: If the first battery pack experiences thermal runaway, a thermal runaway location alarm signal carrying the location information is generated. The thermal runaway location alarm signal is uploaded to the monitoring subsystem for recording.

8. The thermal runaway localization method according to claim 3, characterized in that, After obtaining the current operating data of the first battery pack if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, the method further includes: If the current operating data indicates that the first battery pack has not experienced thermal runaway, a calibration prompt signal is sent back to the control module to prompt the control module to calibrate the thermal runaway location signal.

9. A method for locating thermal runaway, characterized in that, An application in a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each addressing module being connected to a plurality of battery packs, the method comprising: The addressing module receives the thermal runaway trigger signal corresponding to the first battery pack and converts the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack. In response to the thermal runaway location signal, the thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has experienced thermal runaway, then the first battery pack is located based on the location information; Each of the battery packs includes a temperature detector and an explosion-proof valve. Before receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, the method further includes: Acquire the first temperature data of the first battery pack collected by the first temperature detector; If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector. If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated. The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

10. The thermal runaway localization method according to claim 9, characterized in that, The step of receiving the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module and converting the thermal runaway trigger signal into a thermal runaway location signal includes: Based on the addressing module receiving the first temperature trigger signal and the first pressure trigger signal; The addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information. The addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

11. The thermal runaway localization method according to claim 10, characterized in that, The thermal runaway localization system further includes a control module, and each of the addressing modules is connected to the control module. The method further includes: The addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and the control module uploads the first temperature positioning signal and the first pressure positioning signal. The step of determining the thermal runaway state of the first battery pack in response to the thermal runaway location signal includes: In response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained. Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

12. The thermal runaway localization method according to claim 11, characterized in that, The step of determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time includes: If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway. If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

13. The thermal runaway localization method according to claim 9, characterized in that, The method further includes: If at least two of the battery packs experience thermal runaway, the at least two battery packs are located sequentially according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

14. The thermal runaway localization method according to claim 11, characterized in that, The method further includes: Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined. If the third location information and the fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

15. A thermal runaway locating device, characterized in that, An application in a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each addressing module being connected to a plurality of battery packs, the device comprising: The first processing module is configured to receive a thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack. The first determining module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal; The first acquisition module is used to acquire the current operating data of the first battery pack if the thermal runaway state indicates that the first battery pack has experienced thermal runaway. The first positioning module is used to locate the first battery pack based on the location information if the current operating data indicates that the first battery pack has experienced thermal runaway. Each of the battery packs includes a temperature detector and an explosion-proof valve. The device also includes a first trigger module, which is used to collect first temperature data of the first battery pack based on the first temperature detector. If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector. If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated. The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

16. A thermal runaway location device, characterized in that, An application in a thermal runaway localization system, the thermal runaway localization system including at least one addressing module, each addressing module being connected to a plurality of battery packs, the device comprising: The second processing module is used to receive the thermal runaway trigger signal corresponding to the first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the multiple battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack. The second determining module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal; The second positioning module is used to locate the first battery pack based on the location information if the thermal runaway state indicates that the first battery pack has experienced thermal runaway. Each of the battery packs includes a temperature detector and an explosion-proof valve. The device also includes a second trigger module, which is used to acquire first temperature data of the first battery pack collected by the first temperature detector. If the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal is generated carrying the first position information encoded by the first temperature detector. If the first explosion-proof valve switches from the closed state to the open state, a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve is generated. The first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

17. A thermal runaway location system, characterized in that, include: At least one addressing module is provided, each addressing module being connected to a plurality of battery packs. The addressing module is used to receive a thermal runaway trigger signal corresponding to a first battery pack and convert the thermal runaway trigger signal into a thermal runaway location signal. The first battery pack is any one of the plurality of battery packs. The thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal. Both the thermal runaway trigger signal and the thermal runaway location signal carry the location information of the first battery pack. The control module is connected to each of the addressing modules. The control module is used to receive the thermal runaway location signal sent by the addressing module and upload the thermal runaway location signal. A battery management module is connected to the control module and multiple battery packs. The battery management module is used to determine the thermal runaway state of the first battery pack in response to the thermal runaway location signal; if the thermal runaway state indicates that the first battery pack has experienced thermal runaway, the module acquires the current operating data of the first battery pack; if the current operating data indicates that the first battery pack has experienced thermal runaway, the module locates the first battery pack based on the location information. Each of the battery packs includes a temperature sensor and an explosion-proof valve; The first temperature detector is used to collect the first temperature data of the first battery pack; if the first temperature data is greater than a preset temperature threshold, a first temperature trigger signal carrying the first position information encoded by the first temperature detector is generated, and the first temperature trigger signal is sent to the addressing module. The first explosion-proof valve is used to generate a first pressure trigger signal carrying the second position information encoded by the first explosion-proof valve if the first explosion-proof valve switches from the closed state to the open state, and sends the first pressure trigger signal to the addressing module.

18. The thermal runaway location system according to claim 17, characterized in that, The addressing module is also used for: Receive the first temperature trigger signal and the first pressure trigger signal; The first temperature trigger signal is decoded to obtain a first temperature positioning signal carrying the decoded first position information; The first pressure trigger signal is decoded to obtain a first pressure positioning signal carrying the decoded second position information; The first temperature positioning signal and the first pressure positioning signal are sent to the control module.

19. The thermal runaway location system according to claim 18, characterized in that, The control module is also configured to: receive and upload the first temperature positioning signal and the first pressure positioning signal; The battery management module is also used for: In response to the first temperature positioning signal and the first pressure positioning signal, the first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and the second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are obtained. Based on the first trigger time and the second trigger time, the thermal runaway state of the first battery pack is determined.

20. The thermal runaway location system according to claim 19, characterized in that, The battery management module is also used for: If the difference between the first trigger time and the second trigger time is less than a preset time threshold, then it is determined that the first battery pack has experienced thermal runaway. If the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, then it is determined that the first battery pack has not experienced thermal runaway.

21. The thermal runaway location system according to claim 17, characterized in that, The battery management module is also used for: If at least two of the battery packs catch fire, the at least two battery packs are located sequentially according to the time sequence of the detector signals generated by the at least two battery packs.

22. The thermal runaway location system according to claim 19, characterized in that, The battery management module is also used for: Responding to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; Based on the third position information of the second temperature detector carried by the second temperature positioning signal and the fourth position information of the second explosion-proof valve carried by the second pressure positioning signal, the triggering source of the second temperature positioning signal and the second pressure positioning signal is determined. If the third location information and the fourth location information indicate that both the second temperature detector and the second explosion-proof valve belong to the second battery pack, then the thermal runaway state of the second battery pack is determined.

23. The thermal runaway location system according to claim 17, characterized in that, The thermal runaway localization system also includes a monitoring subsystem, and the battery management module is further used for: If the first battery pack experiences thermal runaway, a thermal runaway location alarm signal carrying the location information is generated. The thermal runaway location alarm signal is uploaded to the monitoring subsystem for recording.

24. The thermal runaway location system according to claim 19, characterized in that, The battery management module is also used for: If the current operating data indicates that the first battery pack has not experienced thermal runaway, a calibration prompt signal is sent back to the control module to prompt the control module to calibrate the thermal runaway location signal.

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