Thermal runaway positioning method, device and system

Abstract

The invention provides a thermal runaway positioning method, device and system, and is applied to a thermal runaway positioning system, the thermal runaway positioning system comprises at least one addressing module, each addressing module is correspondingly connected with a plurality of battery packs, and the method comprises the steps: receiving a thermal runaway trigger signal corresponding to a first battery pack based on the addressing module, the first battery pack is used for receiving a thermal runaway trigger signal and converting the thermal runaway trigger signal into a thermal runaway positioning signal, the first battery pack is any one of the multiple battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry the position information of the first battery pack; determining a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; if the thermal runaway state indicates that the thermal runaway of the first battery pack occurs, acquiring current operation data of the first battery pack; and if the current operation data indicates that the thermal runaway of the first battery pack occurs, the first battery pack is positioned based on the position information, so that the positioning efficiency and precision of the thermal runaway battery pack are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a thermal runaway positioning method, device and system. BACKGROUND

[0002] With the rapid development of renewable energy, the importance of energy storage technology is increasingly prominent. Energy storage batteries are widely used in people's life and production today, such as electric vehicles, thermal runaway positioning systems, etc. At present, with the increasing demand for application of energy storage batteries, the energy density requirement of energy storage batteries is higher and higher, and the frequency of thermal runaway of energy storage batteries is also higher and higher. During the thermal runaway process of energy storage batteries, a large amount of heat and a large amount of gas will be released, which will cause the battery temperature and the internal gas pressure of the energy storage battery to rise sharply, resulting in an increase in the safety risk of the energy storage battery.

[0003] In related technologies, the thermal runaway collection method of the thermal runaway positioning system is to realize positioning by transmitting signals to each other through temperature sensors and sound positioning technology. However, the sound positioning technology is easily disturbed by external sound sources, resulting in inaccurate thermal runaway positioning. SUMMARY

[0004] The present application provides a thermal runaway positioning method, device and system, which improves the positioning efficiency and accuracy of the thermal runaway battery pack.

[0005] In a first aspect, the present application provides a thermal runaway positioning method applied to a thermal runaway positioning system, wherein the thermal runaway positioning system comprises at least one addressing module, each addressing module is connected with a plurality of battery packs, and the method comprises the following steps: receiving, by the addressing module, a thermal runaway trigger signal corresponding to a first battery pack, and converting the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any one of the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; determining a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; if the thermal runaway state indicates that the first battery pack has thermal runaway, obtaining current running data of the first battery pack; if the current running data indicates that the first battery pack has thermal runaway, positioning the first battery pack based on the position information.

[0006] The scheme provided in the application converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying first battery pack position information through an addressing module. If thermal runaway occurs in the first battery pack, the positioning of the first battery pack can be realized based on the position information, which is not interfered by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0007] Further, on the basis of determining that the first battery pack has thermal runaway through the thermal runaway positioning signal, whether the first battery pack has truly thermal runaway is judged by monitoring the current operation data of the first battery pack, so as to reduce the misjudgment risk of the thermal runaway positioning signal, provide a prerequisite condition for the positioning of the thermal runaway battery pack, and further improve the positioning efficiency and accuracy of the thermal runaway battery pack.

[0008] In some optional embodiments, each of the battery packs includes a temperature detector and an explosion-proof valve, and before the first battery pack corresponding thermal runaway trigger signal is received based on the addressing module, the method further includes: acquiring 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, generating a first temperature trigger signal carrying first position information encoded by the first temperature detector; if the first explosion-proof valve is switched 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; sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0009] The scheme provided in the application monitors the temperature data of the first battery pack through the first temperature detector and monitors the pressure data in the first battery pack through the switch state 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 triggered. If the pressure data in the first battery pack is greater than a preset pressure threshold, the switch state of the first explosion-proof valve is switched, and a first pressure trigger signal is generated. The two kinds of trigger signals are used to monitor and judge whether the first battery pack has thermal runaway, so as to prevent misjudgment caused by one kind of trigger signal, thereby providing a prerequisite trigger condition for the positioning of the thermal runaway battery pack, and improving the judgment accuracy of the thermal runaway battery pack.

[0010] In some optional embodiments, the first battery pack corresponding thermal runaway trigger signal is received based on the addressing module, and the thermal runaway trigger signal is converted into a thermal runaway positioning signal, which includes: receiving the first temperature trigger signal and the first pressure trigger signal based on the addressing module; The first temperature trigger signal is decoded by the addressing module to obtain a first temperature positioning signal carrying decoded first position information; The first pressure trigger signal is decoded by the addressing module to obtain a first pressure positioning signal carrying decoded second position information.

[0011] The scheme provided in the application decodes the first temperature trigger signal and the first pressure trigger signal processed by the addressing module to obtain the first temperature positioning signal carrying the first position information and the first pressure positioning signal carrying the second position information, thereby providing basic data for subsequent verification of whether the first battery pack is a thermal runaway battery pack, and facilitating improvement of thermal runaway positioning efficiency.

[0012] In some optional embodiments, the thermal runaway positioning system further comprises a control module, each of the addressing modules is connected to the control module, and the method further comprises: The first temperature positioning signal and the first pressure positioning signal are sent to the control module by the addressing module, and the first temperature positioning signal and the first pressure positioning signal are uploaded based on the control module; The response to the thermal runaway positioning signal to determine the thermal runaway state of the first battery pack comprises: 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; The first trigger time and the second trigger time are used to determine the thermal runaway state of the first battery pack.

[0013] The scheme provided in the application judges the trigger times of the first temperature trigger signal and the first pressure trigger signal, and if the trigger times of the two are quite different, it is possible that the temperature detector and / or the explosion-proof valve are misjudged, and in this case, it is impossible to determine that the first battery pack has thermal runaway. In the case that the trigger times of the two are quite small or are triggered at the same time, it can be determined that the first battery pack has thermal runaway, and the control module is used to make a first-level judgment on whether the first battery pack has thermal runaway, thereby improving the judgment accuracy of the thermal runaway battery pack.

[0014] In some optional embodiments, the determination of the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time comprises: If the difference between the first trigger time and the second trigger time is less than a preset time threshold, it is determined that the first battery pack has thermal runaway; If a difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, it is determined that the first battery pack does not have thermal runaway.

[0015] In some optional embodiments, the method further includes: If thermal runaway occurs in at least two battery packs among the plurality of battery packs, the at least two battery packs are sequentially located according to a time sequence of thermal runaway trigger signals generated by the at least two battery packs.

[0016] The scheme provided in the application can sequentially locate at least two battery packs according to a time sequence if thermal runaway occurs in the at least two battery packs, thereby avoiding mismatching and wasting of fire-fighting resources, and can preferentially respond to the battery pack in which thermal runaway occurs earliest, thereby controlling the battery pack in an early stage of thermal runaway and avoiding the situation that multiple battery packs continuously lose control due to a locating sequence.

[0017] In some optional embodiments, the method further includes: responding to a second temperature positioning signal and a second pressure positioning signal uploaded by the control module; determining a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; 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 a second battery pack, it is determined that the second battery pack has thermal runaway.

[0018] The scheme provided in the application requires the control module to not only determine whether trigger times corresponding to a temperature positioning signal and a pressure positioning signal are close to simultaneous triggering, but also 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 determining a battery pack with thermal runaway.

[0019] In some optional embodiments, the thermal runaway positioning system further includes a monitoring subsystem, and after the method includes: If the first battery pack has thermal runaway, a thermal runaway positioning alarm signal carrying the position information is generated; The thermal runaway positioning alarm signal is uploaded to the monitoring subsystem for recording.

[0020] The scheme provided in the application uploads the thermal runaway positioning alarm signal corresponding to the first battery pack determined as thermal runaway to the monitoring subsystem, so that the position and quantity of the thermal runaway battery pack can be viewed by recording, and the fire extinguishing system and the operation and maintenance personnel can be given a quick response time.

[0021] In some optional embodiments, after the current operation data of the first battery pack is obtained, the method further comprises: If the current operation data indicates that the first battery pack does not have thermal runaway, a calibration prompt signal is fed back to the control module to prompt the control module to calibrate the thermal runaway positioning signal.

[0022] After it is determined that the first battery pack does not have thermal runaway by the current operation data, it can be determined that the thermal runaway of the first battery pack determined based on the thermal runaway positioning signal is a misjudgment, and at this time, the calibration prompt signal can be used to prompt the calibration of the thermal runaway positioning signal to avoid the misjudgment again.

[0023] In a second aspect, the application further provides a thermal runaway positioning method applied to a thermal runaway positioning system, the thermal runaway positioning system comprising at least one addressing module, each addressing module being connected to a plurality of battery packs, and the method comprising: Based on the addressing module receiving a thermal runaway trigger signal corresponding to a first battery pack, the thermal runaway trigger signal is converted into a thermal runaway positioning signal, wherein the first battery pack is any battery pack in the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; In response to the thermal runaway positioning signal, the thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has thermal runaway, the first battery pack is positioned based on the position information.

[0024] The scheme provided in the application converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying the position information of the first battery pack through the addressing module, and if the first battery pack has thermal runaway, the first battery pack can be positioned based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0025] In some optional embodiments, each battery pack comprises a temperature detector and an explosion-proof valve, and before the addressing module receives the thermal runaway trigger signal corresponding to the first battery pack, the method further comprises: acquiring first temperature data of the first battery pack by the first temperature detector; generating a first temperature trigger signal carrying first location information of the first temperature detector after encoding if the first temperature data is greater than a preset temperature threshold; generating a first pressure trigger signal carrying second location information of the first explosion-proof valve after encoding if the first explosion-proof valve switches from a closed state to an open state; sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0026] In some optional embodiments, the method further comprises: receiving the first temperature trigger signal and the first pressure trigger signal by the addressing module; decoding the first temperature trigger signal by the addressing module to obtain a first temperature positioning signal carrying decoded first location information; decoding the first pressure trigger signal by the addressing module to obtain a first pressure positioning signal carrying decoded second location information.

[0027] In some optional embodiments, the thermal runaway positioning system further comprises a control module, each of the addressing modules is connected with the control module, and the method further comprises: sending the first temperature positioning signal and the first pressure positioning signal to the control module by the addressing module, and uploading the first temperature positioning signal and the first pressure positioning signal based on the control module; the response to the thermal runaway positioning signal, determining the thermal runaway state of the first battery pack, comprises: in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, acquiring a first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal, and a second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal; determining the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

[0028] In some optional embodiments, the determination of the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time comprises: if the difference between the first trigger time and the second trigger time is less than a preset time threshold, it is determined that the first battery pack has thermal runaway. If a difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, it is determined that the first battery pack does not have thermal runaway.

[0029] In some optional embodiments, the method further includes: If thermal runaway occurs in at least two battery packs among the plurality of battery packs, the at least two battery packs are sequentially located according to a time sequence of thermal runaway trigger signals generated by the at least two battery packs.

[0030] In some optional embodiments, the method further includes: in response to a second temperature positioning signal and a second pressure positioning signal uploaded by the control module; determining a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; 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 a second battery pack, it is determined that the second battery pack has thermal runaway.

[0031] In a third aspect, the present application provides a thermal runaway positioning device applied to a thermal runaway positioning system, the thermal runaway positioning system including at least one addressing module, each addressing module being connected to a plurality of battery packs, and the device including: a first processing module configured to receive a thermal runaway trigger signal corresponding to a first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any battery pack among the plurality of battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; a first determining module configured to determine a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; a first obtaining module configured to obtain current operation data of the first battery pack if the thermal runaway state indicates that the first battery pack has thermal runaway; a first locating module configured to locate the first battery pack based on the position information if the current operation data indicates that the first battery pack has thermal runaway.

[0032] 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: 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.

[0033] Fifthly, this application provides a thermal runaway localization system, comprising: 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. 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.

[0034] In some alternative embodiments, each of the battery packs includes a temperature detector 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 configured to generate a first pressure trigger signal carrying second position information of the first explosion-proof valve after the first explosion-proof valve switches from a closed state to an open state, and send the first pressure trigger signal to the addressing module.

[0035] In some optional embodiments, the addressing module is further configured to: receive the first temperature trigger signal and the first pressure trigger signal; decode the first temperature trigger signal to obtain a first temperature positioning signal carrying decoded first position information; decode the first pressure trigger signal to obtain a first pressure positioning signal carrying decoded second position information; send the first temperature positioning signal and the first pressure positioning signal to the control module.

[0036] 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. The battery management module is further configured to: obtain, in response to the first temperature positioning signal and the first pressure positioning signal, a first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal, and a second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal; determine a thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

[0037] In some optional embodiments, the battery management module is further configured to: if a difference between the first trigger time and the second trigger time is less than a preset time threshold, determine that the first battery pack has a 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, determine that the first battery pack does not have a thermal runaway.

[0038] In some optional embodiments, the battery management module is further configured to: if at least two battery packs of the plurality of battery packs have a fire, sequentially locate the at least two battery packs according to a time sequence of the detector signals generated by the at least two battery packs.

[0039] In some optional embodiments, the battery management module is further configured to: respond to a second temperature positioning signal and a second pressure positioning signal uploaded by the control module; determine a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of the second temperature detector carried by the second temperature positioning signal and 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 the second temperature detector and the second explosion-proof valve both belong to a second battery pack, a thermal runaway state of the second battery pack is determined.

[0040] In some optional embodiments, the thermal runaway positioning system further includes a monitoring subsystem, and the battery management module is further configured to: If the first battery pack has a thermal runaway, a thermal runaway positioning alarm signal carrying the position information is generated; The thermal runaway positioning alarm signal is uploaded to the monitoring subsystem for recording.

[0041] In some optional embodiments, the battery management module is further configured to: If the current operation data indicates that the first battery pack does not have a thermal runaway, a calibration prompt signal is fed back to the control module to prompt the control module to calibrate the thermal runaway positioning signal.

[0042] It can be understood that the beneficial effects of the second aspect to the fifth aspect can be referred to the related description in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0044] Figure 1 is a system architecture schematic diagram of the thermal runaway positioning system provided by some embodiments of the present application.

[0045] Figure 2 is a flowchart of the thermal runaway positioning method provided by some embodiments of the present application.

[0046] Figure 3 is a scene schematic diagram of the thermal runaway positioning method provided by some embodiments of the present application.

[0047] Figure 4 is a detailed flowchart of the thermal runaway positioning method provided by some embodiments of the present application.

[0048] Figure 5is a flowchart of a heat run-away positioning method provided by some embodiments of the present application.

[0049] Figure 6 is a structural block diagram of a heat run-away positioning device provided by some embodiments of the present application.

[0050] Figure 7 is a structural block diagram of a heat run-away positioning device provided by some embodiments of the present application.

[0051] Figure 8 is a structural block diagram of a heat run-away positioning system provided by some embodiments of the present application.

[0052] Figure 9 is a computer readable storage medium for storing or carrying program codes for implementing the heat run-away positioning method provided by embodiments of the present application.

[0053] Figure 10 is a computer program product for storing or carrying program codes for implementing the heat run-away positioning method provided by embodiments of the present application. DETAILED DESCRIPTION

[0054] In order to make the features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] The following description refers to the accompanying drawings. Unless otherwise noted, like elements in different drawings represent the same or similar elements. The following description of the example embodiments is not meant to represent all embodiments in accordance with the present application. Rather, it is but a description of some aspects of the application in accordance with the claims as detailed below.

[0056] It should be understood that when used in the specification and the appended claims, the term "comprises" indicates the presence of the described features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0057] It should also be understood that the terms used herein are for the purpose of describing particular embodiments and are not intended to limit the application. As used in the specification and the appended claims, the singular forms "a," "an" and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise.

[0058] It should be further understood that the term "and / or" used in the specification and the appended claims means one or more of the associated listed items as well as all possible combinations of the items and includes the combinations.

[0059] In addition, in the description of the present application, the terms "first", "second" are only for the purpose of description and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features.

[0060] In the related art, the thermal runaway acquisition mode of the thermal runaway positioning system is realized by mutual signal transmission of temperature sensors and sound positioning technology. However, the sound positioning technology is easily disturbed by external sound sources, resulting in inaccurate thermal runaway positioning.

[0061] To solve the above problems, the thermal runaway positioning method, device and system provided by the embodiments of the present application receive a thermal runaway trigger signal corresponding to a first battery pack based on an addressing module, convert the thermal runaway trigger signal into a thermal runaway positioning signal carrying position information of the first battery pack, and determine the thermal runaway state of the first battery pack in response to the thermal runaway positioning signal. If the first battery pack has thermal runaway, the position of the first battery pack can be determined based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0062] Further, based on determining that the first battery pack has thermal runaway through the thermal runaway positioning signal, the current running data of the first battery pack is monitored to further determine whether the first battery pack has truly thermal runaway, thereby reducing the misjudgment risk of the thermal runaway positioning signal, providing a prerequisite for positioning the thermal runaway battery pack, and further improving the positioning efficiency and accuracy of the thermal runaway battery pack.

[0063] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0064] Please refer to Figure 1 , Figure 1is a schematic diagram of a system architecture of a thermal runaway positioning system provided by some embodiments of the present application. The thermal runaway positioning system 10 can include a battery pack 11, an addressing module 12, a control module 13, a battery management module 14, and a monitoring subsystem 15.

[0065] The battery pack 11 is the basic energy storage unit of the thermal runaway positioning system, composed of a plurality of battery cells in series and parallel connection, and can realize the storage and release of electrical energy, and is the basic hardware for realizing the energy storage function.

[0066] The battery pack 11 can include, but is not limited to, any one of lithium ion batteries, lead-acid storage batteries, nickel-cadmium storage batteries, nickel-hydrogen storage batteries, zinc-silver batteries, iron-chromium flow batteries, and all-vanadium flow batteries. For example, a lithium ion battery pack is composed of a plurality of ternary lithium battery cells or lithium iron phosphate battery cells, and can be applied to energy storage power stations, electric vehicles, and other scenarios. The battery pack 11, as the core carrier of energy storage, contains battery cells, battery management units, protection circuits, etc. inside, and can be used to monitor the voltage, current, temperature, and other state parameters of the battery pack 11 itself.

[0067] The thermal runaway positioning system 10 can include a plurality of battery packs 11, and the plurality of battery packs 11 can be connected by lines to form a battery cluster. The thermal runaway positioning system 10 can be provided with a plurality of battery clusters. Each battery cluster is provided with a battery management submodule. The battery pack 11 can transmit battery state information to the battery management submodule and receive charging and discharging control instructions from the battery management submodule.

[0068] The addressing module 12 can be used to identify and analyze the location information of the battery pack 11 and other devices. For example, in the case of thermal runaway and other scenarios, 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 analyze the location information of the battery pack corresponding to the thermal runaway trigger signals according to the pre-set coding rules and mapping relationships.

[0069] Specifically, one end of the addressing module 12 is connected to a plurality of battery packs 11 for receiving trigger signals from the battery packs 11, and the other end of the addressing module 12 is connected to the control module 13 for sending decoded thermal runaway positioning signals to the control module 13.

[0070] The control module 13 is the core control device of the fire extinguishing system, which can acquire signals and issue control instructions. Specifically, the control module 13 can be used to receive thermal runaway related signals and issue fire control instructions according to pre-set logic. For example, the control module 13 can be a fire alarm controller in a building fire extinguishing system; in the case of an energy storage power station, the control module 13 can be a fire host adapted to fire extinguishing.

[0071] The control module 13 has the functions of signal receiving, processing, logical judgment, instruction sending, etc., can receive the thermal runaway positioning signal sent by the addressing module 12, and can send control instructions to the fire control system according to a preset fire control strategy.

[0072] One end of the control module 13 is connected with the addressing module 12 for receiving the signal transmitted by the addressing module 12, and the other end of the control module 13 is connected with the battery management system 14. When the thermal runaway positioning system has a thermal runaway or fire risk, the control module 13 receives the signal in time, responds quickly, and starts the corresponding fire control measures to ensure safety.

[0073] The battery management module 14 centrally manages and coordinates a plurality of battery management sub-modules connected with the battery pack 11, can comprehensively monitor and control the battery state of the whole thermal runaway positioning system. One end of the battery management module 14 is connected with the plurality of battery management sub-modules for receiving the state data of the battery pack, and the other end of the battery management module 14 is connected with the monitoring subsystem 15 for sending the state information of the battery pack to the monitoring subsystem 15, and can also receive the control instructions sent by the management subsystem 15.

[0074] The monitoring subsystem 15 can be an energy station monitoring system of the energy management system, for overall energy management, monitoring and scheduling of the energy storage power station. For example, in the energy management system in a large integrated power station, the monitoring subsystem 15 can coordinate the operation of photovoltaic, wind power and energy storage equipment, and realize reasonable distribution and scheduling of electric energy.

[0075] The monitoring subsystem 15 is connected with the battery management module 14 for receiving the state data of the battery pack and issuing control instructions to the battery management module 14 to realize overall management and control of the energy storage power station. Specifically, the monitoring subsystem 15 has the functions of data acquisition, monitoring, analysis, control and optimization, acquires the operating state information of the energy storage power station, and according to the grid demand, power station operation strategy, etc., performs energy scheduling and control on the energy storage power station.

[0076] It should be noted that the above hardware architecture is only shown for the convenience of understanding the present application, and the embodiments of the present application are not limited in this respect, and the embodiments of the present application can also be applied to other equivalent hardware architectures which are obvious variants.

[0077] Please refer to Figure 2 , Figure 2 is a flowchart of a thermal runaway positioning method provided by some embodiments of the present application. In specific embodiments, the thermal runaway control method can be applied to the battery management module 14 in the thermal runaway positioning system 10 as shown in Figure 1 The following will take the battery management module 14 as an example to Figure 2The flowchart is shown in detail. The thermal runaway positioning system 10 can include at least one addressing module 12, each addressing module 12 is connected with a plurality of battery packs 11. The specific flow of the thermal runaway positioning method can be as follows: S101, 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 positioning signal, wherein the first battery pack is any battery pack in the plurality of battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry the position information of the first battery pack.

[0078] In the embodiments of the present application, thermal runaway may occur in each battery pack during the operation of the plurality of battery packs in the thermal runaway positioning system. The first battery pack is taken as an example for illustration. The first battery pack is any battery pack in the plurality of battery packs. It can be understood that the thermal runaway positioning method of the first battery pack can be used in the thermal runaway positioning process of each battery pack in the plurality of battery packs.

[0079] In some embodiments, please refer to Figure 3 , Figure 3 is a scene diagram of the thermal runaway positioning method provided by some embodiments of the present application. The first battery pack is taken as an example. The first battery pack 20 can include a battery pack box 21, a plurality of battery cells 22, a temperature detector 23, and a pressure relief valve 24.

[0080] The plurality of battery cells 22 can be arranged side by side. The temperature detector 23 is arranged at the top of the battery pack box 21 and is used to detect the temperature data of the plurality of 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.

[0081] When the first battery pack 20 is in normal working and the pressure relief valve 24 is in a closed state, if thermal runaway occurs in the first battery cell 221 in the first battery pack 20, the first battery cell 221 generates gas 222. The generated gas 222 increases the internal pressure of the battery pack box 21. Since the pressure data inside the battery pack box 21 is greater than a preset pressure threshold, the pressure relief valve 24 needs to be switched from the closed state to the open state to make the gas 222 along the exhaust path 223 be discharged to the outside of the battery pack box 21 through the pressure relief valve 24. At this time, the pressure relief valve 24 generates a pressure trigger signal.

[0082] Since the temperature detector 23 and the explosion-proof valve 24 are arranged in the first battery pack, the first battery pack will generate corresponding temperature trigger signals and pressure trigger signals when thermal runaway occurs, and the thermal runaway trigger signals include the temperature trigger signals and the pressure trigger signals. It should be noted that the temperature trigger signals and the pressure trigger signals need to be triggered at the same time to determine that the first battery pack has thermal runaway. If only a single trigger signal of the temperature trigger signal or the pressure trigger signal is generated, it may be a false alarm or a false operation of the explosion-proof valve, but not a real thermal runaway of the first battery pack, so that false triggering caused by external interference such as environmental temperature fluctuation and mechanical vibration can be avoided, thereby laying a foundation for the effectiveness of the thermal runaway trigger signals received by the subsequent addressing module.

[0083] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve, before the addressing module receives the thermal runaway trigger signal corresponding to the first battery pack, the first temperature detector collects 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 first location information encoded by the first temperature detector is generated; if the first explosion-proof valve is switched from a closed state to an open state, a first pressure trigger signal carrying second location information encoded by the first explosion-proof valve is generated; and the first temperature trigger signal and the first pressure trigger signal are sent to the addressing module.

[0084] Specifically, the first temperature detector continuously collects the environmental temperature in the first battery pack, i.e. the first temperature data, and the collection object is the high-temperature flue gas diffused after the thermal runaway of the battery cell in the first battery pack, so that the first temperature data can directly reflect whether there is a thermal runaway risk in the battery pack. The preset temperature threshold can be set in advance, such as 80℃, 85℃, 90℃, etc. Taking 80℃ as an example, if the first temperature data is greater than 80℃, it is determined that the temperature of the first battery pack is abnormal, and the first temperature detector generates a first temperature trigger signal based on the first temperature data.

[0085] It should be noted that the first temperature trigger signal needs to carry first location information encoded by the first temperature detector, and the first location information is encoded by the first temperature detector, so as to be bound to the physical location of the first battery pack, and ensure that the first battery pack can be located based on the first location information.

[0086] Specifically, the first explosion-proof valve corresponds to the switch signal node to monitor the switch state of the explosion-proof valve. The switch state of the explosion-proof valve corresponds to the pressure data change in the first battery pack, that is, the change of the pressure data in the first battery pack will affect the switch state of the explosion-proof valve. Specifically, when it is monitored that the first explosion-proof valve switches from the closed state to the open state, it is determined that the thermal runaway of the first battery pack produces a large amount of gas, so that the pressure in the first battery pack is abnormal, triggering the switch signal node of the explosion-proof valve to generate a first pressure trigger signal based on the pressure data change.

[0087] It should be noted that the first pressure trigger signal needs to carry the second position information of the first explosion-proof valve after encoding. The explosion-proof valve code and the first temperature detector code correspond to the same battery pack, which ensures that the position information of the first temperature trigger signal and the first pressure trigger signal can be matched, and provides a basis for verifying the effectiveness of the subsequent addressing module.

[0088] It can be understood that the temperature data of the first battery pack is monitored by the first temperature detector, and the pressure data in the first battery pack is monitored by the switch state of the first explosion-proof valve. If the temperature data of the first battery pack is greater than the preset temperature threshold, the first temperature trigger signal is triggered; if the pressure data in the first battery pack is greater than the preset pressure threshold, the first explosion-proof valve switches the switch state and generates the first pressure trigger signal. Through the two trigger signals, it is monitored and judged whether the first battery pack has thermal runaway, so as to prevent false judgment caused by one trigger signal, thereby providing a prerequisite trigger condition for positioning the thermal runaway battery pack, and being beneficial to improving the judgment accuracy of the thermal runaway battery pack.

[0089] Optionally, the encoding format of the first position information and the second position information can include the battery pack number and the detector type, for example, the first battery pack-first temperature detector, the second battery pack-second explosion-proof valve, etc. Among them, the battery pack number part of the first temperature detector code and the first explosion-proof valve code needs to be consistent, so that the first position information and the second position information can both point to the first battery pack, and it is ensured that the addressing module can identify whether the first temperature trigger signal and the first pressure trigger signal come from the same battery pack through the code.

[0090] In some embodiments, each addressing module corresponds to a plurality of battery packs, each battery pack is provided with a detector and an explosion-proof valve, so that each addressing module corresponds to a battery cluster, and the plurality of temperature detectors and the plurality of explosion-proof valves included in each battery cluster are connected in a ring network. For example, the 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 the battery cluster through the signal ring network in the battery cluster corresponding to the first battery pack. Among them, even if a breakpoint appears in the signal ring network loop, the transmission of the trigger signal will not be affected. That is, even if a fault occurs in a certain section of the transmission link of the signal ring network, the two types of trigger signals can still be transmitted to the addressing module through the standby path of the ring network, ensuring the reliability of signal transmission.

[0091] In some embodiments, based on the addressing module receiving the thermal runaway trigger signal corresponding to the first battery pack, and converting the thermal runaway trigger signal into a thermal runaway positioning signal, the step can specifically include: based on the addressing module receiving the first temperature trigger signal and the first pressure trigger signal; decoding the first temperature trigger signal through the addressing module to obtain a first temperature positioning signal carrying the decoded first position information; decoding the first pressure trigger signal through the addressing module to obtain a first pressure positioning signal carrying the decoded second position information.

[0092] Specifically, the addressing module analyzes the signal after receiving the first temperature trigger signal, strips the encoding field in the first temperature trigger signal, filters out the redundant information such as transmission check code in the signal transmission process, and extracts the first temperature detector code. Then, table lookup matching is performed, the extracted first temperature detector code is compared with the encoding-position mapping table, the first position information, the signal receiving time and the signal type are integrated, and the first temperature positioning signal is generated. Similarly, the decoding process of the first pressure trigger signal by the addressing module is the same as that of the first temperature trigger signal, which will not be described here.

[0093] It can be understood that the addressing module decodes the first temperature trigger signal and the first pressure trigger signal after encoding processing to obtain the first temperature positioning signal carrying the first position information and the first pressure positioning signal carrying the second position information, which provides basic data for subsequent verification of whether the first battery pack is a thermal runaway battery pack, and is beneficial to improve the thermal runaway positioning efficiency.

[0094] In some embodiments, the thermal runaway positioning system can further include a control module, each addressing module is connected with the control module, and the first temperature positioning signal and the first pressure positioning signal are transmitted to the control module through the addressing module. That is to say, the addressing module can not only decode the trigger signal to obtain the position signal, but also transmit the decoded positioning signal to the control module. After receiving the first temperature positioning signal and the first pressure positioning signal sent by the addressing module, the control module can upload the first temperature positioning signal and the first pressure positioning signal, and specifically upload them to the battery management module, so that the battery management module verifies whether the first battery pack has thermal runaway based on the first temperature positioning signal and the first pressure positioning signal.

[0095] 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 extinguishing system, and the fire extinguishing system can perform corresponding fire extinguishing operation on the first battery pack based on the fire alarm signal.

[0096] S102, in response to the thermal runaway positioning signal, determining the thermal runaway state of the first battery pack.

[0097] In an 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.

[0098] It can be understood 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, and the first temperature positioning signal and the first pressure positioning signal have been decoded in the addressing module. Based on the first position information and the second position information, it is determined that the two types of thermal runaway positioning signals carry the standardized signals of the physical position information of the first battery pack and the detector trigger attribute, so as to ensure that the battery management module can directly extract the trigger time and position and other key information in the positioning signal, and lay a foundation for subsequent state judgment.

[0099] After receiving the thermal runaway positioning signal, the battery management module checks whether the position information of the first battery pack carried in the first temperature positioning signal and the first pressure positioning signal is completely consistent to perform address matching verification. If the position information carried by the two types of thermal runaway positioning signals is inconsistent, it is determined that the signal source is abnormal; if the position information carried by the two types of thermal runaway positioning signals is consistent, it is determined that the two types of thermal runaway positioning signals are from the first battery pack, and the trigger time extraction step is entered.

[0100] Specifically, after confirming that the position information matches, the battery management module extracts a first trigger time of the first temperature trigger signal from the first temperature positioning signal, the first trigger time corresponding to a time when the first temperature detector is triggered by the high-temperature flue gas; and extracts a second trigger time of the first pressure trigger signal from the first pressure positioning signal, the second trigger time corresponding to a time when the first explosion-proof valve is triggered to switch from a closed state to an open state due to the gas pressure exceeding the preset pressure threshold.

[0101] It can be understood that, by judging the trigger times of the first temperature trigger signal and the first pressure trigger signal, if the trigger times of the two are quite different, it is likely that the temperature detector and / or the explosion-proof valve are misjudged, and at this time it is not possible to determine that the first battery pack has thermal runaway. In the case that the trigger times of the two are quite small or triggered at the same time, it can be determined that the first battery pack has thermal runaway, and a first-level judgment is made on whether the first battery pack has thermal runaway, thereby improving the judgment accuracy of the thermal runaway battery pack.

[0102] In some embodiments, based on the first trigger time and the second trigger time, the step of determining the thermal runaway state of the first battery pack can include: if the difference between the first trigger time and the second trigger time is less than a preset time threshold, determining that the first battery pack has thermal runaway; and if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, determining that the first battery pack does not have thermal runaway.

[0103] It should be noted that there is a time sequence correlation between the first temperature trigger signal and the first pressure trigger signal, and the corresponding first trigger time and second trigger time between the two are extremely short, and in the absence of external environmental interference, the time interval is only the time difference of the thermal runaway physical reaction. If the first battery pack truly has thermal runaway, the difference between the first trigger time and the second trigger time is less than the preset time threshold, which conforms to the physical law of thermal runaway; if the thermal runaway determination of the first battery pack is in a false trigger scenario, even if the signal sources of the first temperature trigger signal and the first pressure trigger signal are the same battery pack, the difference between the trigger times will be greater than or equal to the preset time threshold. Therefore, the determination logic based on the comparison between the time difference between the first trigger time and the second trigger time and the preset time threshold can ensure that the determination result conforms to the physical characteristics of thermal runaway and avoid false positives.

[0104] It should be noted that the thermal runaway of the first battery pack refers to the fact that the internal cells of the first battery pack cause a violent exothermic reaction due to internal short circuit, overcharge, high temperature, etc., generate high-temperature flue gas and cause the explosion-proof valve to open, thereby triggering the irreversible runaway state of the temperature detector and the explosion-proof valve in the first battery pack.

[0105] Specifically, the uncontrolled battery cell in the first battery pack releases a large amount of heat to form high-temperature thermal runaway smoke, and the temperature of the smoke reaches a preset temperature threshold of the temperature detector, such as 80°C. At this time, the internal pressure and temperature of the first battery pack suddenly rise, causing the explosion-proof valve to trigger its switch signal node to open for exhaust. In this embodiment, when the temperature in the first battery pack reaches the preset temperature threshold and the pressure is greater than the preset pressure threshold, it is determined that the first battery pack has a thermal runaway.

[0106] 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 trigger timing of the first temperature trigger signal and the first pressure trigger signal conforms to the thermal runaway physical timing, and the two types of trigger signals are from the same battery pack, which can exclude single detector false triggering, environmental interference and the like, thereby determining that the first battery pack has a real thermal runaway risk.

[0107] After determining that the first battery pack has a thermal runaway, an execution action signal such as a fire extinguishing operation can be sent to the single-pack fire extinguishing device in the fire extinguishing system corresponding to the first battery pack, thereby realizing precise fire extinguishing.

[0108] In an optional embodiment, if the time difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, it indicates that the trigger timing of the first temperature trigger signal and the first pressure trigger signal does not conform to the thermal runaway physical timing, thereby determining that the first battery pack has not had a thermal runaway. To avoid false triggering of the fire extinguishing system, the fire extinguishing action is not triggered in the case where the first battery pack has not had a thermal runaway, and the signal temporary storage and abnormal marking operations can be performed, the thermal runaway positioning signal is temporarily stored, and a false triggering prompt signal is sent, which is analyzed by the operation and maintenance personnel later to avoid false reporting and provide a basis for system maintenance, thereby improving the reliability and maintainability of the thermal runaway positioning system.

[0109] In some embodiments, in response to the control module uploading the received second temperature positioning signal and the second pressure positioning signal; according to 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 belong to the second battery pack, the thermal runaway state of the second battery pack is determined.

[0110] It can be understood that the battery management module not only needs to judge whether the trigger time corresponding to the temperature positioning signal and the pressure positioning signal is close to simultaneous triggering, but also needs to judge whether the temperature positioning signal and the pressure positioning signal are signals triggered by the same battery pack, thereby further improving the judgment accuracy of the thermal runaway battery pack.

[0111] Specifically, the control module receives the second temperature positioning signal and the second pressure positioning signal sent by the addressing module, and uploads the second temperature positioning signal and the second pressure positioning signal to the battery management module. The battery management module responds to the second temperature positioning signal and the second pressure positioning signal, strips and extracts third location information from the second temperature positioning signal and fourth location information from the second pressure positioning signal, the third location information and the fourth location information both include a battery pack number and a detector type, and determines whether the trigger sources of the second temperature positioning signal and the second pressure positioning signal are consistent based on the third location information and the fourth location information. For example, the third location information is a second battery pack-second temperature detector, and the fourth location information is a second battery pack-second explosion-proof valve, and it is determined that the trigger sources of the second temperature positioning signal and the second pressure positioning signal are consistent. If the trigger sources of the second temperature positioning signal and the second pressure positioning signal are inconsistent, the second temperature positioning signal and the second pressure positioning signal are marked as invalid signals to avoid the situation of misjudgment of thermal runaway positioning caused by signal mixing.

[0112] S103, if the thermal runaway state indicates that the first battery pack has thermal runaway, the current running data of the first battery pack is obtained.

[0113] In some embodiments, the battery management module has preliminarily determined that the first battery pack has thermal runaway based on the thermal runaway state, and triggered a single-pack fire-fighting action, such as starting the first battery pack fire extinguishing assembly to extinguish the fire. In addition, the battery management module needs to combine the cell voltage, current, internal temperature trend and other running data of the first battery pack monitored by itself for secondary verification. Among them, the obtained current running data is the real-time running data of the first battery pack, such as real-time cell voltage, real-time current, etc.

[0114] Specifically, if the battery management module monitors that the first battery pack has thermal runaway characteristics such as voltage drop and abnormal current fluctuation, which is consistent with the preliminary determination result based on the thermal runaway state, it is finally confirmed that the first battery pack has thermal runaway; if the current running data monitored by the battery management module is normal, the data acquisition is suspended and the abnormality is checked to avoid invalid data collection and inaccurate thermal runaway positioning caused by preliminary verification misjudgment.

[0115] S104, if the current running data indicates that the first battery pack has thermal runaway, the first battery pack is positioned based on the location information.

[0116] In the embodiment, after the battery management module performs 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 secondary verification in combination with the current operation data of the first battery pack monitored by itself, confirm that the first battery pack indeed has thermal runaway, and then synchronize the location information to the monitoring subsystem. The monitoring subsystem visually outputs the location information to intuitively display the specific location of the first battery pack, so as to ensure that the operation and maintenance personnel and the fire extinguishing system can quickly obtain the accurate location of the first battery pack.

[0117] In some embodiments, when the positioning monitoring is performed, multiple thermal runaway battery pack trigger points can be detected to improve the positioning accuracy and the fault tolerance rate. Specifically, if thermal runaway occurs in at least two battery packs among the multiple battery packs, the at least two battery packs are sequentially positioned according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

[0118] It can be understood that if thermal runaway occurs in at least two battery packs, the at least two battery packs are sequentially positioned according to the time sequence, so as to avoid mismatching and wasting of fire extinguishing resources, and the battery pack that has thermal runaway earliest can be responded to preferentially to control the thermal runaway in the early stage and avoid the situation that multiple battery packs have continuous thermal runaway due to the positioning sequence.

[0119] Specifically, the trigger time and the location information of each thermal runaway trigger signal are obtained through centralized reception and time extraction of the thermal runaway trigger signals, so as to form an associated data set of the trigger time and the location information. The control module sends the location information and the trigger time of each battery pack to the battery management module according to the sequence of the trigger time. The battery management module sequentially positions each battery pack based on the sequence of the trigger time, so as to avoid that the operation and maintenance personnel cannot distinguish the priority due to multiple trigger points, and the severity of the fire may be misjudged.

[0120] In some embodiments, the thermal runaway positioning system further includes a monitoring subsystem. If the current operation data indicates that the first battery pack has thermal runaway, after positioning the first battery pack based on the location information, the thermal runaway positioning system can further include: if the first battery pack has thermal runaway, generating a thermal runaway positioning alarm signal carrying the location information; and uploading the thermal runaway positioning alarm signal to the monitoring subsystem for recording.

[0121] It can be understood that the thermal runaway positioning alarm signal corresponding to the first battery pack determined to have thermal runaway is uploaded to the monitoring subsystem, so that the location and the number of the thermal runaway battery pack can be viewed through the record, and the fire extinguishing system and the operation and maintenance personnel can be given a quick response time.

[0122] In some embodiments, if the current operation data indicates that the first battery pack does not have thermal runaway, a calibration prompt signal is fed back to the control module to prompt the control module to calibrate the thermal runaway positioning signal.

[0123] It can be understood that after determining that the first battery pack does not have thermal runaway through the current operation data, it can be determined that the thermal runaway of the first battery pack determined based on the thermal runaway positioning signal is a misjudgment, at which time the calibration prompt signal can be used to prompt the calibration of the thermal runaway positioning signal to avoid misjudgment again, ensure the accuracy of subsequent positioning signals, avoid invalid fire fighting actions, and ensure system determination reliability.

[0124] As can be seen from the above, the embodiment converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying the position information of the first battery pack through the addressing module. If the first battery pack has thermal runaway, the positioning of the first battery pack can be realized based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0125] Further, based on the determination that the first battery pack has thermal runaway through the thermal runaway positioning signal, the current operation data of the first battery pack is monitored to further determine whether the first battery pack has thermal runaway, thereby reducing the misjudgment risk of the thermal runaway positioning signal, providing a prerequisite for the positioning of the thermal runaway battery pack, and further improving the positioning efficiency and accuracy of the thermal runaway battery pack.

[0126] In order to better illustrate the thermal runaway positioning scheme in the foregoing embodiments, the application embodiment further provides a refined thermal runaway positioning method. Please refer to Figure 4 , Figure 4 is a refined process schematic diagram of the thermal runaway positioning method provided by some embodiments of the application, which includes the following steps: S201, generating a first temperature trigger signal carrying first position information encoded by a first temperature detector based on the first temperature detector.

[0127] S202, generating a first pressure trigger signal carrying second position information encoded by a first explosion-proof valve based on the first explosion-proof valve.

[0128] S203, sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0129] S204, the addressing module decodes the first temperature trigger signal to obtain a first temperature positioning signal carrying the decoded first position information.

[0130] S205, the addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying the decoded second position information.

[0131] 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.

[0132] 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.

[0133] S208, based on the first trigger time and the second trigger time, determine the thermal runaway state of the first battery pack.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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: S301, receiving, by the addressing module, a thermal runaway trigger signal corresponding to a first battery pack, and converting the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any one of a plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry location information of the first battery pack.

[0139] In the embodiment, each battery pack comprises a temperature detector and an explosion-proof valve, and before the addressing module receives the thermal runaway trigger signal corresponding to the first battery pack, the method further comprises: acquiring first temperature data of the first battery pack collected by a first temperature detector; generating a first temperature trigger signal carrying first location information encoded by the first temperature detector if the first temperature data is greater than a preset temperature threshold; generating a first pressure trigger signal carrying second location information encoded by the first explosion-proof valve if the first explosion-proof valve is switched from a closed state to an open state; and sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0140] In some embodiments, the step of receiving, by the addressing module, the thermal runaway trigger signal corresponding to the first battery pack, and converting the thermal runaway trigger signal into the thermal runaway positioning signal can comprise: receiving, by the addressing module, the first temperature trigger signal and the first pressure trigger signal; decoding, by the addressing module, the first temperature trigger signal to obtain a first temperature positioning signal carrying decoded first location information; and decoding, by the addressing module, the first pressure trigger signal to obtain a first pressure positioning signal carrying decoded second location information.

[0141] For a specific description of step S301, please refer to the description of step S201 in the above embodiments, which will not be repeated here.

[0142] S302, determining a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal.

[0143] In some embodiments, the thermal runaway positioning system further comprises a control module, and each addressing module is connected to the control module. The first temperature positioning signal and the first pressure positioning signal are sent to the control module by the addressing module, and the first temperature positioning signal and the first pressure positioning signal are uploaded based on the control module.

[0144] In some embodiments, in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, a first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and a second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal are acquired; and the thermal runaway state of the first battery pack is determined based on the first trigger time and the second trigger time.

[0145] 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 can include: if a difference between the first trigger time and the second trigger time is less than a preset time threshold, determining that the first battery pack has thermal runaway; and if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, determining that the first battery pack does not have thermal runaway.

[0146] In some embodiments, the response control module is further configured to: receive a second temperature positioning signal and a second pressure positioning signal; and determine a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; and 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 a second battery pack, determine a thermal runaway state of the second battery pack.

[0147] The specific description of step S302 can be referred to the description of step S202 in the above embodiments, which is not repeated here.

[0148] S303, if the thermal runaway state indicates that the first battery pack has thermal runaway, positioning the first battery pack based on the position information.

[0149] In some embodiments, if thermal runaway occurs in at least two battery packs in the plurality of battery packs, the at least two battery packs are sequentially positioned according to a time sequence of thermal runaway trigger signals generated by the at least two battery packs.

[0150] It should be noted that the specific description of positioning the first battery pack based on the position information in step S303 can be referred to the description of step S204 in the above embodiments, which is not repeated here.

[0151] As can be seen from the above, by the addressing module, the received thermal runaway trigger signal is converted into a thermal runaway positioning signal carrying position information of the first battery pack, and if the first battery pack has thermal runaway, the first battery pack can be positioned based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0152] It should be understood that the size of the serial number of each step in the foregoing embodiments of the application does not mean the sequence of the execution of the steps, and the execution sequence of each step should be determined according to its function and inherent logic, and should not constitute the only limitation on the implementation process of the embodiments of the application.

[0153] Based on the same inventive concept, the embodiments of the application also provide related products for implementing the above-mentioned method, and it should be understood that the implementation scheme of the related products for solving the problem is similar to the above-mentioned method.

[0154] The embodiments of the present application also provide a thermal runaway positioning device. Please refer to Figure 6 , Figure 6 is a structural diagram of the thermal runaway positioning device provided by some embodiments of the present application. The thermal runaway positioning device 400 can be applied to a thermal runaway positioning system, which includes at least one addressing module, and each addressing module is correspondingly connected with a plurality of battery packs. Wherein, the thermal runaway positioning device 400 can include a first processing module 401, a first determining module 402, a first obtaining module 403 and a first positioning module 404, which are specifically as follows: The first processing module 401 is configured to convert a thermal runaway trigger signal corresponding to a first battery pack into a thermal runaway positioning signal based on the addressing module receiving the thermal runaway trigger signal, wherein the first battery pack is any battery pack in the plurality of battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; The first determining module 402 is configured to determine a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; The first obtaining module 403 is configured to obtain current running data of the first battery pack if the thermal runaway state indicates that the first battery pack has thermal runaway; The first positioning module 404 is configured to position the first battery pack based on the position information if the current running data indicates that the first battery pack has thermal runaway.

[0155] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve, and the thermal runaway positioning device 400 can further include a first trigger module, which can be configured to: collect first temperature data of the first battery pack based on the first temperature detector; generate a first temperature trigger signal carrying first position information encoded by the first temperature detector if the first temperature data is greater than a preset temperature threshold; generate a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve if the first explosion-proof valve is switched from a closed state to an open state; and send the first temperature trigger signal and the first pressure trigger signal to the addressing module.

[0156] In some embodiments, the first processing module 401 can be further configured to: receive the first temperature trigger signal and the 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.

[0157] In some embodiments, the thermal runaway positioning system further comprises a control module, each addressing module is connected with the control module, and the first processing module 401 can be further configured to: send the first temperature positioning signal and the first pressure positioning signal to the control module through the addressing module, and upload the first temperature positioning signal and the first pressure positioning signal based on the control module.

[0158] The first determining module 402 can be further configured to: in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, obtain a first trigger time of a first temperature trigger signal corresponding to the first temperature positioning signal and a second trigger time of a 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.

[0159] In some embodiments, the first determining module 402 can be further configured to: if a difference between the first trigger time and the second trigger time is less than a preset time threshold, determine that the first battery pack has thermal runaway; and if the difference between the first trigger time and the second trigger time is greater than or equal to the preset time threshold, determine that the first battery pack does not have thermal runaway.

[0160] In some embodiments, the thermal runaway positioning device 400 can further comprise a third positioning module, which can be configured to: if thermal runaway occurs in at least two battery packs in the plurality of battery packs, sequentially position the at least two battery packs according to a time sequence of thermal runaway trigger signals generated by the at least two battery packs.

[0161] In some embodiments, the thermal runaway positioning device 400 can further comprise a first verifying module, which can be configured to: in response to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; determine a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; and 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, determine the thermal runaway state of the second battery pack.

[0162] In some embodiments, the thermal runaway positioning system further comprises a monitoring subsystem, and the thermal runaway positioning device 400 can further comprise a first uploading module, which can be configured to: if the first battery pack has thermal runaway, generate a thermal runaway positioning alarm signal carrying position information; and upload the thermal runaway positioning alarm signal to the monitoring subsystem for recording.

[0163] In some embodiments, the thermal runaway positioning device 400 can further comprise a first prompt module, which can be used to feed back a calibration prompt signal to the control module to prompt the control module to calibrate the thermal runaway positioning signal if the current operation data indicates that the first battery pack does not have thermal runaway.

[0164] It should be noted that the thermal runaway positioning device provided by the embodiments of the present application belongs to the same concept as the thermal runaway positioning method in the above embodiments. Any method provided in the thermal runaway positioning method embodiments can be run on the thermal runaway positioning device, and the specific implementation process is detailed in the thermal runaway positioning method embodiments, which will not be described here.

[0165] In the present embodiment, the thermal runaway positioning device 400 converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying the position information of the first battery pack through the addressing module. If the first battery pack has thermal runaway, the positioning of the first battery pack can be realized based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0166] Further, based on determining that the first battery pack has thermal runaway through the thermal runaway positioning signal, the current operation data of the first battery pack is monitored to further determine whether the first battery pack has truly thermal runaway, thereby reducing the misjudgment risk of the thermal runaway positioning signal, providing a prerequisite for the positioning of the thermal runaway battery pack, and further improving the positioning efficiency and accuracy of the thermal runaway battery pack.

[0167] Correspondingly, the present application further provides another thermal runaway positioning device. Please refer to Figure 7 , Figure 7 is a structural block diagram of the thermal runaway positioning device provided by some other embodiments of the present application. The thermal runaway positioning device 400 can be applied to a thermal runaway positioning system, and the thermal runaway positioning system comprises at least one addressing module, each of which is connected with a plurality of battery packs. Wherein, the thermal runaway positioning device 400 can comprise a second processing module 501, a second determination module 502 and a second positioning module 503, which are specifically as follows: The second processing module 501 is configured to receive a thermal runaway trigger signal corresponding to a first battery pack based on the addressing module, and convert the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any battery pack in the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; The second determination module 502 is configured to determine a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal. The second positioning module 503 is configured to position the first battery pack based on the position information if the thermal runaway state indicates that the first battery pack has thermal runaway.

[0168] In some embodiments, each battery pack includes a temperature detector and an explosion-proof valve, and the thermal runaway positioning device 500 further includes a second triggering module configured to: collect first temperature data of the first battery pack based on the first temperature detector; generate a first temperature triggering signal carrying first position information encoded by the first temperature detector if the first temperature data is greater than a preset temperature threshold; generate a first pressure triggering signal carrying second position information encoded by the first explosion-proof valve if the first explosion-proof valve switches from a closed state to an open state; and send the first temperature triggering signal and the first pressure triggering signal to the addressing module.

[0169] In some embodiments, the second processing module 501 is further configured to: receive the first temperature triggering signal and the first pressure triggering signal based on the addressing module; decode the first temperature triggering signal by the addressing module to obtain a first temperature positioning signal carrying decoded first position information; and decode the first pressure triggering signal by the addressing module to obtain a first pressure positioning signal carrying decoded second position information.

[0170] In some embodiments, the thermal runaway positioning system further includes a control module, each addressing module is connected to the control module, the first temperature positioning signal and the first pressure positioning signal are sent to the control module by the addressing module, and the first temperature positioning signal and the first pressure positioning signal are uploaded based on the control module; and the second determination module 502 is further configured to: obtain a first triggering time of the first temperature triggering signal corresponding to the first temperature positioning signal and a second triggering time of the first pressure triggering signal corresponding to the first pressure positioning signal in response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module; and determine the thermal runaway state of the first battery pack based on the first triggering time and the second triggering time.

[0171] In some embodiments, the second determination module 502 is further configured to: determine that the first battery pack has thermal runaway if a difference between the first triggering time and the second triggering time is less than a preset time threshold; and determine that the first battery pack does not have thermal runaway if the difference between the first triggering time and the second triggering time is greater than or equal to the preset time threshold.

[0172] In some embodiments, the thermal runaway positioning device 400 further includes a fourth positioning module configured to: sequentially position at least two battery packs that have thermal runaway according to a time sequence of thermal runaway triggering signals generated by the at least two battery packs if thermal runaway occurs in the at least two battery packs among the plurality of battery packs.

[0173] In some embodiments, the thermal runaway positioning device 400 can further include a second verification module, which can be configured to: respond to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; determine the trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of the second temperature detector carried by the second temperature positioning signal and fourth position information of the second explosion-proof valve carried by the second pressure positioning signal; and determine the thermal runaway state of the second battery pack 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.

[0174] It should be noted that the thermal runaway positioning device provided by the embodiments of the present application belongs to the same concept as the thermal runaway positioning method in the above embodiments. Any method provided in the thermal runaway positioning method embodiments can be run on the thermal runaway positioning device. The specific implementation process is described in detail in the thermal runaway positioning method embodiments, which will not be described here.

[0175] In the present embodiment, the thermal runaway positioning device 400 converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying the position information of the first battery pack through the addressing module. If the first battery pack has a thermal runaway, the positioning of the first battery pack can be realized based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning method of the sound positioning technology.

[0176] Correspondingly, the present application also provides a thermal runaway positioning system, please continue to refer to Figure 1 The thermal runaway positioning system 10 includes at least one addressing module 12, a control module 13 and a battery management module 14.

[0177] Each addressing module 12 is connected to a plurality of battery packs, and the addressing module 12 is configured to receive a thermal runaway trigger signal corresponding to a battery pack and convert the thermal runaway trigger signal into a thermal runaway positioning signal. The first battery pack is any battery pack in the plurality of battery packs, and the thermal runaway positioning signal carries the position information of the first battery pack.

[0178] Each addressing module 12 is connected to the control module 13, and the control module 13 is configured to determine the thermal runaway state of the first battery pack in response to the thermal runaway positioning signal.

[0179] The battery management module 14 is connected to the control module 13 and the plurality of battery packs. The battery management module 14 is configured to obtain the current running data of the first battery pack if the thermal runaway state indicates that the first battery pack has a thermal runaway; and position the first battery pack based on the position information if the current running data indicates that the first battery pack has a thermal runaway.

[0180] As can be seen, the received thermal runaway trigger signal is converted into a thermal runaway positioning signal carrying the first battery pack position information by the addressing module. If the first battery pack has thermal runaway, the first battery pack can be positioned based on the position information, and is not disturbed by the environmental sound source. Compared with the positioning mode of the sound positioning technology, the positioning efficiency and accuracy of the thermal runaway battery pack can be improved.

[0181] Further, based on determining that the first battery pack has thermal runaway through the thermal runaway positioning signal, whether the first battery pack has thermal runaway is determined by monitoring the current operation data of the first battery pack, so as to reduce the misjudgment risk of the thermal runaway positioning signal, provide a prerequisite for positioning the thermal runaway battery pack, and further improve the positioning efficiency and accuracy of the thermal runaway battery pack.

[0182] In addition, the application also provides a thermal runaway positioning system, please refer to Figure 8 , Figure 8 is a structural block diagram of the thermal runaway positioning system provided by some embodiments of the application. The thermal runaway positioning system 600 includes a processor 601 and a memory 602. Wherein, the processor 601 is electrically connected with the memory 602.

[0183] The processor 601 is the control center of the thermal runaway positioning system 600, which connects various parts of the thermal runaway positioning system through various interfaces and lines, executes various functions of the thermal runaway positioning system and processes data by running or calling the computer programs stored in the memory 602 and calling the data stored in the memory 602, so as to monitor the thermal runaway positioning system as a whole.

[0184] The memory 602 can be used to store software programs and modules. The processor 601 executes various functions and data processing by running the computer programs and modules stored in the memory 602. The memory 602 can mainly include a program storage area and a data storage area. The program storage area can store operating systems, computer programs required by at least one function, etc. The data storage area can store data created according to the use of the thermal runaway positioning system, etc.

[0185] In addition, the memory 602 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory 602 can also include a memory controller to provide access of the processor 601 to the memory 602.

[0186] In the embodiment, the processor 601 in the thermal runaway positioning system 600 loads the instructions corresponding to the process of one or more computer programs into the memory 602 and runs the computer programs stored in the memory 602 by the processor 601 to implement various functions according to the following steps. Alternatively, the following steps are performed: The addressing module receives a thermal runaway trigger signal corresponding to a first battery pack, and converts the thermal runaway trigger signal into a thermal runaway positioning signal, where the first battery pack is any battery pack of a plurality of battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry location information of the first battery pack; In response to the thermal runaway positioning signal, a thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has thermal runaway, current operation data of the first battery pack is obtained; If the current operation data indicates that the first battery pack has thermal runaway, the first battery pack is positioned based on the location information.

[0187] Alternatively, the following steps are performed: The addressing module receives a thermal runaway trigger signal corresponding to a first battery pack, and converts the thermal runaway trigger signal into a thermal runaway positioning signal, where the first battery pack is any battery pack of a plurality of battery packs, the thermal runaway trigger signal includes a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry location information of the first battery pack; In response to the thermal runaway positioning signal, a thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has thermal runaway, the first battery pack is positioned based on the location information.

[0188] Please refer to Figure 9 which shows a structural block diagram of a computer readable storage medium provided by an embodiment of the present application. The computer readable storage medium 700 stores program code 701, which can be called and executed by a processor to perform the methods described in the above method embodiments.

[0189] The computer-readable storage medium 700 can be an electronic storage such as a flash memory, an EEPROM (Electrically Erasable Programmable Read-Only Memory), an EPROM, a hard disk, or a ROM. Alternatively, the computer-readable storage medium 700 comprises a non-transitory computer-readable medium. The computer-readable storage medium 700 has a storage space for the program code 701 for performing any of the method steps of the above-described methods. The program code can be read from or written to one or more computer program products. The program code 701 can be compressed in an appropriate form, for example.

[0190] Due to the instructions stored in the storage medium, the steps in any of the thermal runaway positioning methods provided by the embodiments of the present application can be performed, and thus the beneficial effects of any of the thermal runaway positioning methods provided by the embodiments of the present application can be achieved. Details are described in the foregoing embodiments, which will not be repeated here.

[0191] Please refer to Figure 10 which shows a structural block diagram of a computer program product provided by an embodiment of the present application. The computer program product 800 comprises computer programs / instructions 801 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 programs / instructions 801 from the computer-readable storage medium, and the processor executes the computer programs / instructions 801, so that the computer device performs the method described in the above method embodiments.

[0192] The scheme provided by the embodiment converts the received thermal runaway trigger signal into a thermal runaway positioning signal carrying first battery pack position information through the addressing module. If thermal runaway occurs in the first battery pack, the first battery pack can be positioned based on the position information, which is not disturbed by the environmental sound source, and the positioning efficiency and accuracy of the thermal runaway battery pack can be improved compared with the positioning mode of the sound positioning technology.

[0193] Further, on the basis of determining that the first battery pack has thermal runaway through the thermal runaway positioning signal, the current running data of the first battery pack is monitored to further determine whether the first battery pack has truly thermal runaway, thereby reducing the misjudgment risk of the thermal runaway positioning signal, providing a prerequisite for the positioning of the thermal runaway battery pack, and further improving the positioning efficiency and accuracy of the thermal runaway battery pack.

[0194] In the embodiments of the present disclosure, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the embodiments of the apparatus described above are merely schematic; for example, the division of the modules or units is merely logical function division; an actual implementation can be another division manner, for example, multiple units or components can be combined or integrated into another apparatus, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, apparatuses or units, and can be electrical, mechanical or in other forms.

[0195] For the thermal runaway positioning apparatus of the embodiments of the present disclosure, each functional module can be integrated in a processing chip, or each module can exist physically separately, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0196] The thermal runaway positioning method, apparatus and system provided by the embodiments of the present disclosure are described in detail above. The principles and implementation manners of the present disclosure are described by using specific examples in this paper, and the above embodiments are only used to help understand the method of the present disclosure and its core idea; meanwhile, for those skilled in the art, according to the idea of the present disclosure, the specific implementation manner and application range can be changed; in conclusion, the content of the present description should not be understood as a limitation of the present disclosure.

Claims

1. A thermal runaway location method, characterized in that, The application is applied to a thermal runaway positioning system, the thermal runaway positioning system comprises at least one addressing module, each of the addressing modules is connected with a plurality of battery packs, and the method comprises the following steps: Based on the addressing module receiving a thermal runaway trigger signal corresponding to a first battery pack, and converting the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any battery pack in the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; In response to the thermal runaway positioning signal, the thermal runaway state of the first battery pack is determined; If the thermal runaway state indicates that the first battery pack has thermal runaway, the current operation data of the first battery pack is acquired; If the current operation data indicates that the first battery pack has thermal runaway, the first battery pack is positioned based on the position information.

2. The thermal runaway location method of claim 1, wherein, Each of the battery packs comprises a temperature detector and an explosion-proof valve, and before the addressing module receives the thermal runaway trigger signal corresponding to the first battery pack, the method further comprises the following steps: Based on the first temperature detector collecting 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 first position information encoded by the first temperature detector is generated; If the first explosion-proof valve is switched 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.

3. The thermal runaway location method of claim 2, wherein, The addressing module receives the first temperature trigger signal and the first pressure trigger signal based on the addressing module receiving the thermal runaway trigger signal corresponding to the first battery pack and converting the thermal runaway trigger signal into a thermal runaway positioning signal, which comprises the following steps: The addressing module receives the first temperature trigger signal and the first pressure trigger signal based on the addressing module receiving the thermal runaway trigger signal corresponding to the first battery pack and converting the thermal runaway trigger signal into a thermal runaway positioning signal, which comprises the following steps: The first temperature positioning signal carrying the decoded first position information is obtained by decoding the first temperature trigger signal through the addressing module; The first pressure positioning signal carrying the decoded second position information is obtained by decoding the first pressure trigger signal through the addressing module.

4. The thermal runaway location method of claim 3, wherein, The thermal runaway positioning system further comprises a control module, each of the addressing modules is connected with the control module, and the method further comprises the following steps: The first temperature positioning signal and the first pressure positioning signal are sent to the control module through the addressing module, and the first temperature positioning signal and the first pressure positioning signal are uploaded based on the control module; 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 acquired; 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 acquired; determine a thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

5. The thermal runaway location method of claim 4, wherein, The determination of the thermal runaway state of the first battery pack based on the first trigger time and the second trigger time comprises: if a difference between the first trigger time and the second trigger time is less than a preset time threshold, it is determined that the first battery pack has 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, it is determined that the first battery pack does not have thermal runaway.

6. The thermal runaway location method of claim 1, wherein, The method further comprises: if thermal runaway occurs in at least two battery packs among the plurality of battery packs, the at least two battery packs are sequentially located according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

7. The thermal runaway positioning method of claim 4, wherein, The method further comprises: in response to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; determine the trigger source of the second temperature positioning signal and the second pressure positioning signal according to 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 the second temperature detector and the second explosion-proof valve both belong to a second battery pack, the thermal runaway state of the second battery pack is determined.

8. The thermal runaway location method of claim 1, wherein, The thermal runaway positioning system further comprises a monitoring subsystem, and after the location of the first battery pack based on the position information if the current operation data indicates that the first battery pack has thermal runaway, the method further comprises: if the first battery pack has thermal runaway, a thermal runaway positioning alarm signal carrying the position information is generated; upload the thermal runaway positioning alarm signal to the monitoring subsystem for recording.

9. The thermal runaway location method of claim 4, wherein, After the current operation data of the first battery pack is obtained if the thermal runaway state indicates that the first battery pack has thermal runaway, the method further comprises: if the current operation data indicates that the first battery pack does not have thermal runaway, a calibration prompt signal is fed back to the control module to prompt the control module to calibrate the thermal runaway positioning signal.

10. A thermal runaway location method, characterized in that, The method is applied to a thermal runaway positioning system, the thermal runaway positioning system comprises at least one addressing module, each addressing module is connected with a plurality of battery packs, and the method comprises: based on the addressing module receiving a thermal runaway trigger signal corresponding to a first battery pack, and converting the thermal runaway trigger signal into a thermal runaway positioning signal, wherein the first battery pack is any battery pack among the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; determine a thermal runaway state of the first battery pack based on the first trigger time and the second trigger time. if the thermal runaway state indicates that the first battery pack has thermal runaway, locate the first battery pack based on the position information.

11. The thermal runaway positioning method of claim 10, wherein, Each of the battery packs comprises a temperature detector and an explosion-proof valve, and before the addressing module receives the thermal runaway trigger signal corresponding to the first battery pack, the method further comprises: acquiring first temperature data of the first battery pack collected by a first temperature detector; if the first temperature data is greater than a preset temperature threshold, generating a first temperature trigger signal carrying first location information of the first temperature detector after encoding; if the first explosion-proof valve is switched from a closed state to an open state, generating a first pressure trigger signal carrying second location information of the first explosion-proof valve after encoding; sending the first temperature trigger signal and the first pressure trigger signal to the addressing module.

12. The thermal runaway positioning method of claim 11, wherein, 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 positioning signal, which comprises: The addressing module receives 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 decoded first location information; The addressing module decodes the first pressure trigger signal to obtain a first pressure positioning signal carrying decoded second location information.

13. The thermal runaway positioning method of claim 12, wherein, The thermal runaway positioning system further comprises a control module, each of the addressing modules is connected to the control module, and the method further comprises: The addressing module sends the first temperature positioning signal and the first pressure positioning signal to the control module, and uploads the first temperature positioning signal and the first pressure positioning signal based on the control module; In response to the thermal runaway positioning signal, the method further comprises: In response to the first temperature positioning signal and the first pressure positioning signal uploaded by the control module, acquiring a first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal, and a second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal; Based on the first trigger time and the second trigger time, determining the thermal runaway state of the first battery pack.

14. The thermal runaway positioning method of claim 13, wherein, Based on the first trigger time and the second trigger time, determining the thermal runaway state of the first battery pack, which comprises: If the difference between the first trigger time and the second trigger time is less than a preset time threshold, it is determined that the first battery pack has 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, it is determined that the first battery pack has not thermal runaway.

15. The thermal runaway positioning method of claim 10, wherein, The method further comprises: If at least two battery packs in the plurality of battery packs have thermal runaway, the at least two battery packs are sequentially positioned according to the time sequence of the thermal runaway trigger signals generated by the at least two battery packs.

16. The thermal runaway positioning method of claim 13, wherein, The method further comprises: In response to the second temperature positioning signal and the second pressure positioning signal uploaded by the control module; determine a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; 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 a second battery pack, determine a thermal runaway state of the second battery pack.

17. A thermal runaway location device, characterized by The application is applied to a thermal runaway positioning system, and the thermal runaway positioning system comprises at least one addressing module, each of the addressing modules is connected with a plurality of battery packs, and the device comprises: a first processing module, configured to convert a thermal runaway trigger signal corresponding to a first battery pack into a thermal runaway positioning signal based on the addressing module, wherein the first battery pack is any one of the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; a first determining module, configured to determine a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; a first obtaining module, configured to obtain current operation data of the first battery pack if the thermal runaway state indicates that the first battery pack has thermal runaway; a first positioning module, configured to position the first battery pack based on the position information if the current operation data indicates that the first battery pack has thermal runaway.

18. A thermal runaway location device, characterized by, The application is applied to a thermal runaway positioning system, and the thermal runaway positioning system comprises at least one addressing module, each of the addressing modules is connected with a plurality of battery packs, and the device comprises: a second processing module, configured to convert a thermal runaway trigger signal corresponding to a first battery pack into a thermal runaway positioning signal based on the addressing module, wherein the first battery pack is any one of the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack; a second determining module, configured to determine a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; a second positioning module, configured to position the first battery pack based on the position information if the thermal runaway state indicates that the first battery pack has thermal runaway.

19. A thermal runaway location system characterized by, The application comprises: at least one addressing module, each of the addressing modules is connected with a plurality of battery packs, and the addressing module is configured to convert a thermal runaway trigger signal corresponding to a first battery pack into a thermal runaway positioning signal, wherein the first battery pack is any one of the plurality of battery packs, the thermal runaway trigger signal comprises a temperature trigger signal and a pressure trigger signal, and the thermal runaway trigger signal and the thermal runaway positioning signal both carry position information of the first battery pack. a control module, each of the addressing modules is connected with the control module, the control module is used for receiving the thermal runaway positioning signal sent by the addressing module, and uploading the thermal runaway positioning signal; a battery management module connected with the control module and the plurality of battery packs, the battery management module is used for determining a thermal runaway state of the first battery pack in response to the thermal runaway positioning signal; if the thermal runaway state indicates that the first battery pack has thermal runaway, obtaining current operation data of the first battery pack; if the current operation data indicates that the first battery pack has thermal runaway, positioning the first battery pack based on the position information.

20. The thermal runaway positioning system of claim 19, wherein, Each of the battery packs comprises a temperature detector and an explosion-proof valve; The first temperature detector is used for collecting 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 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 for generating a first pressure trigger signal carrying second position information encoded by the first explosion-proof valve if the first explosion-proof valve is switched from a closed state to an open state, and sending the first pressure trigger signal to the addressing module.

21. The thermal runaway positioning system of claim 20, wherein, The addressing module is further used for: receiving the first temperature trigger signal and the first pressure trigger signal; decoding the first temperature trigger signal to obtain a first temperature positioning signal carrying decoded first position information; decoding the first pressure trigger signal to obtain a first pressure positioning signal carrying decoded second position information; sending the first temperature positioning signal and the first pressure positioning signal to the control module.

22. The thermal runaway positioning system of claim 21, wherein, The control module is further used for receiving and uploading the first temperature positioning signal and the first pressure positioning signal. The battery management module is further used for: in response to the first temperature positioning signal and the first pressure positioning signal, obtaining a first trigger time of the first temperature trigger signal corresponding to the first temperature positioning signal and a second trigger time of the first pressure trigger signal corresponding to the first pressure positioning signal; determining a thermal runaway state of the first battery pack based on the first trigger time and the second trigger time.

23. The thermal runaway positioning system of claim 22, wherein, The battery management module is further used for: if a difference between the first trigger time and the second trigger time is less than a preset time threshold, determining that the first battery pack has 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, determining that the first battery pack does not have thermal runaway.

24. The thermal runaway positioning system of claim 19, wherein, The battery management module is further used for: if at least two battery packs of the plurality of battery packs have fire, sequentially positioning the at least two battery packs according to a time sequence of detector signals generated by the at least two battery packs.

25. The thermal runaway positioning system of claim 22, wherein, The battery management module is further used for: in response to a second temperature positioning signal and a second pressure positioning signal uploaded by the control module; determine a trigger source of the second temperature positioning signal and the second pressure positioning signal according to third position information of a second temperature detector carried by the second temperature positioning signal and fourth position information of a second explosion-proof valve carried by the second pressure positioning signal; 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 a second battery pack, determine a thermal runaway state of the second battery pack.

26. The thermal runaway positioning system of claim 19, wherein, The thermal runaway positioning system further comprises a monitoring subsystem, and the battery management module is further configured to: if the first battery pack has a thermal runaway, generate a thermal runaway positioning alarm signal carrying the position information; upload the thermal runaway positioning alarm signal to the monitoring subsystem for recording.

27. The thermal runaway positioning system of claim 22, wherein, The battery management module is further configured to: if the current operation data indicates that the first battery pack does not have a thermal runaway, feed back a calibration prompt signal to the control module to prompt the control module to calibrate the thermal runaway positioning signal.

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