CN114839555A

CN114839555A - Early warning method and device for battery energy storage system, electronic equipment and storage medium

Info

Publication number: CN114839555A
Application number: CN202210378302.7A
Authority: CN
Inventors: 严卫平; 张天保; 徐会亮; 李骥; 陶训峰; 闫炯炯; 郭婷婷
Original assignee: Anhui State Power Investment And New Power Technology Research Co ltd; Beijing Hyperstrong Technology Co Ltd
Current assignee: Anhui State Power Investment And New Power Technology Research Co ltd; Beijing Hyperstrong Technology Co Ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-02

Abstract

The application relates to the technical field of battery energy storage, in particular to a battery energy storage system early warning method, a device, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring a plurality of characteristic data corresponding to each battery cluster in a battery energy storage system, wherein the characteristic data are used for representing the safety state of the battery cluster; and if the plurality of characteristic data meet the preset abnormal condition, generating alarm information. Therefore, the acquired characteristic data can be analyzed, the battery energy storage system is monitored, the reliability is greatly improved, the protection action can be started in advance, potential safety hazards or risks of the battery energy storage system can be recognized early, accurately and quickly, and the safety is improved.

Description

Early warning method and device for battery energy storage system, electronic equipment and storage medium

Technical Field

The present disclosure relates to the field of battery energy storage technologies, and in particular, to a battery energy storage system early warning method and apparatus, an electronic device, and a storage medium.

Background

With the development of energy storage technology, the battery energy storage system is more and more important in the position of a power system all over the world and is spread in various fields such as a user side, a power grid side, a power generation side, new energy grid connection, a micro-grid and the like. Along with the large-scale application of the battery energy storage power station, the safety performance of the energy storage system also draws wide attention, wherein the safety of the energy storage power station is seriously influenced by thermal runaway possibly caused by self chemical reaction or external influence in the charging and discharging processes of the battery.

In the prior art, the flue gas concentration information and the temperature information of the battery compartment can be obtained and sent to the controller, and then the controller can start and stop the alarm mechanism and the spraying mechanism according to the flue gas concentration information and the temperature information of the battery compartment; the fire alarm state in the battery compartment can be monitored in real time, the alarm is rapidly given out and the fire is extinguished, wherein the alarm mechanism is used for prompting the fire alarm state of the battery compartment for workers; the spraying mechanism is used for extinguishing fire to the battery compartment.

However, the reliability of the method is not high, the requirement of the battery energy storage system on fire protection cannot be met in the aspect of the early warning function, namely, the protection action cannot be started in advance, the fire protection can be started only after an accident happens, and the safety is low.

Disclosure of Invention

The application provides a battery energy storage system early warning method, a battery energy storage system early warning device, electronic equipment and a storage medium, and can solve the technical problems that the requirements of a battery energy storage system on fire fighting cannot be met in the prior early warning function, namely, a protection action cannot be started in advance, and the safety is low.

In a first aspect, the present application provides a battery energy storage system early warning method, which is applied to a battery energy storage system, and the method includes:

acquiring a plurality of characteristic data corresponding to each battery cluster in a battery energy storage system, wherein the characteristic data are used for representing the safety state of the battery cluster;

And if the characteristic data meet the preset abnormal condition, generating alarm information.

Optionally, the battery cluster includes a plurality of battery cells, and the characteristic data includes temperature information, and further includes at least one of the following: current information, voltage information, state of charge (SOC) information; the temperature information comprises a highest temperature, a lowest temperature, a first temperature difference and a second temperature difference; the current information includes a maximum current; the voltage information comprises a highest voltage, a lowest voltage, a first voltage difference and a second voltage difference; the SOC information comprises a highest SOC and a lowest SOC;

the first temperature difference is the difference value between the highest temperature and the lowest temperature corresponding to the single batteries in the battery cluster; the second temperature difference is the difference value between the last moment temperature and the current temperature corresponding to each single battery in the battery cluster, and the first pressure difference is the difference value between the highest voltage and the lowest voltage corresponding to the single batteries in the battery cluster; the second voltage difference is a difference value between a last-time voltage and a current voltage corresponding to each battery cell in the battery cluster.

Optionally, the preset abnormal condition includes: the first temperature difference is greater than a first preset threshold, the second temperature difference is greater than a second preset threshold, the highest temperature is greater than the first threshold, and the lowest temperature is less than the second threshold, and the method further comprises at least one of the following steps: the first voltage difference is greater than a third preset threshold, the second voltage difference is greater than a fourth preset threshold, the highest voltage is greater than the third threshold, and the lowest voltage is less than the fourth threshold;

The maximum current is greater than a fifth threshold;

the highest SOC is greater than a sixth threshold and the lowest SOC is less than a seventh threshold.

Optionally, if the multiple feature data satisfy a preset abnormal condition, generating alarm information includes:

if the battery cluster meets the preset abnormal condition based on a plurality of characteristic data corresponding to the battery cluster, acquiring the abnormal battery monomer number in the battery cluster, and generating corresponding alarm information based on the battery monomer number.

Optionally, the battery energy storage system further includes a fire fighting device, and the method further includes:

acquiring monitoring parameters in each battery cluster, wherein the monitoring parameters comprise Volatile Organic Compound (VOC) concentration, smoke concentration, combustible gas concentration, temperature parameters and open fire data;

and selecting the alarm strategies of the corresponding levels based on the monitoring parameters, and triggering the fire-fighting operation of the alarm strategies of the corresponding levels based on the fire-fighting device.

Optionally, selecting an alarm policy of a corresponding level based on the monitoring parameters includes:

if the first preset condition is met, triggering a primary alarm strategy; the first preset condition includes: the VOC concentration in one battery cluster exceeds a fifth preset threshold value and the smoke concentration exceeds a sixth preset threshold value;

If the condition is determined to meet a second preset condition, triggering a secondary alarm strategy, wherein the second preset condition comprises: the VOC concentration in two or more battery clusters exceeds a fifth preset threshold value, the smoke concentration exceeds a sixth preset threshold value, and/or the first preset condition and the combustible gas concentration exceeds a seventh preset threshold value;

if the third preset condition is determined to be met, triggering a three-level alarm strategy, wherein the third preset condition comprises: the second preset condition and the temperature parameter exceed an eighth preset threshold, and/or the characteristic data meet a preset abnormal condition, and/or the open fire data are not zero.

Optionally, the method further includes:

if a primary alarm strategy is triggered, uploading first alarm information to the terminal equipment of the staff to remind the staff to check the running state of the equipment;

if a secondary alarm strategy is triggered, controlling an audible and visual alarm to alarm, controlling a shutter to open to ventilate and ventilate, and uploading second alarm information to staff terminal equipment to prompt staff to start a fire extinguishing system, wherein the fire extinguishing system is used for extinguishing fire according to the fire extinguishing strategy;

and if the three-level alarm strategy is triggered, controlling an audible and visual alarm to give an alarm, sending third alarm information to a visual management platform, controlling the battery energy storage system to stop running, and extinguishing the fire according to the fire extinguishing strategy.

Optionally, put out a fire according to a fire extinguishing strategy, including:

controlling a main fire extinguishing agent bottle group to open an electromagnetic valve so that fire extinguishing agents in the main fire extinguishing agent bottle group can completely submerge a battery energy storage system through a fire extinguishing agent conveying pipeline;

judging whether at least one of the following conditions is met: acquiring open fire data, and determining that the open fire data is not zero; acquiring a plurality of characteristic data corresponding to each battery cluster, and determining that the plurality of characteristic data meet a preset abnormal condition within a preset time period; acquiring a temperature parameter, and determining that the temperature parameter exceeds an eighth preset threshold;

if not, sending prompt information to the terminal equipment of the staff to prompt the user that the fire is extinguished successfully;

if yes, controlling the fire extinguishing agent bottle group to open the electromagnetic valve to carry out secondary fire extinguishing.

Optionally, the method further includes:

and if the secondary fire extinguishing fails, controlling the fire-extinguishing water bag to be in a connection state, and controlling the water inlet valve to inject water to the battery energy storage system through the fire-extinguishing water bag.

In a second aspect, the present application further provides a battery energy storage system early warning device, the device includes:

the battery energy storage system comprises an acquisition module, a storage module and a management module, wherein the acquisition module is used for acquiring a plurality of characteristic data corresponding to each battery cluster in the battery energy storage system, and the characteristic data is used for representing the safety state of the battery cluster;

And the processing module is used for generating alarm information when the characteristic data meet preset abnormal conditions.

In a third aspect, the present application further provides an electronic device, including: a processor, and a memory communicatively coupled to the processor;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to implement the method of any of the first aspects.

In a fourth aspect, the present application also provides a computer-readable storage medium storing computer-executable instructions for implementing the method according to any one of the first aspect when executed by a processor.

In a fifth aspect, the present application also provides a computer program comprising program code for performing the method according to any of the first aspect when the computer program is run by a computer.

In summary, the present application provides a battery energy storage system early warning method, an apparatus, an electronic device, and a storage medium, which may be implemented by obtaining a plurality of feature data corresponding to each battery cluster in a battery energy storage system, where the feature data is used to represent a safety state of the battery cluster, further determining whether a preset abnormal condition is satisfied based on the plurality of feature data, and if the plurality of feature data satisfies the preset abnormal condition, generating warning information. Therefore, the acquired characteristic data can be analyzed, the battery energy storage system is monitored, the reliability is greatly improved, if the detection is abnormal, alarm information can be sent to the cloud platform and the user terminal equipment, the protection action can be started in advance, potential safety hazards or risks of the battery energy storage system can be recognized early, accurately and quickly, and the safety is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a container energy storage system with a fire fighting device;

fig. 3 is a schematic flow chart of a battery energy storage system early warning method according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an arrangement of battery container devices according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a fire detection system according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a container blind according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a fire suppression system according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a container water fire-fighting interface according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of an early warning device of a battery energy storage system according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. For example, the first device and the second device are only used for distinguishing different devices, and the sequence order thereof is not limited. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

Embodiments of the present application will be described below with reference to the accompanying drawings. Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application, and the early warning method for a battery energy storage system provided in the present application may be applied to the application scenario shown in fig. 1. The application scenario includes: the Battery energy storage System 101 comprises a Battery Management System (BMS) 102, a fire fighting device 103 and 4 Battery clusters 104, wherein each Battery cluster 104 comprises 4 Battery cells, namely 1 Battery cell to 4 Battery cells, 5 Battery cells to 8 Battery cells, 9 Battery cells to 12 Battery cells and 13 Battery cells to 16 Battery cells, respectively.

Specifically, the BMS102 may monitor, in real time, temperature data and at least one type of basic data, such as voltage data, current data, etc., of the cells 1 to 16 in the 4 battery clusters 104; further, BMS102 handles temperature data, voltage data and current data, extracts characteristic data to this characteristic data analysis, if find this characteristic data unusual, with fire control unit 103 communication, upload alarm information to staff's terminal equipment 105 simultaneously to the staff inserts as early as possible and examines.

Correspondingly, the fire fighting device 103 may also obtain, in real time, parameter data corresponding to the 4 battery clusters 104 sent by each sensor, such as Volatile Organic Compound (VOC) concentration, smoke concentration, combustible gas concentration, and the like, and judge the parameter data, thereby selecting a corresponding early warning strategy for fire fighting operation.

It should be noted that, in the embodiment of the present application, the number of the battery clusters 104 included in the battery energy storage system 101 and the number of the battery cells in each battery cluster 104 are not specifically limited, which is merely an example, and the battery energy storage system 101 may send the warning information to the terminal device 105 of the worker, may also send the warning information to the cloud platform, or may be other devices.

It can be understood that the early warning method for the battery energy storage system provided by the embodiment of the application can detect fire in a real-time manner by the BMS102 and the fire protection device 103 in a linkage and all-around manner, find the fire as soon as possible, perform corresponding fire extinguishing measures and ensure the safe operation of the battery energy storage system 101.

In the prior art, the flue gas concentration information and the temperature information of a battery compartment (namely a container for placing a battery cluster) can be obtained and sent to a controller, and then the controller can start and stop an alarm mechanism and a spraying mechanism according to the flue gas concentration information and the temperature information of the battery compartment; the fire alarm state in the battery compartment can be monitored in real time, the alarm is rapidly given out and the fire is extinguished, wherein the alarm mechanism is used for prompting the fire alarm state of the battery compartment for workers; the spraying mechanism is used for extinguishing fire to the battery compartment.

For example, fig. 2 is a schematic structural diagram of a container energy storage system with a fire fighting device, as shown in fig. 2, the container energy storage system with a fire fighting device comprises a battery compartment 210, an equipment compartment 220, a controller 201, and a gas sensor 202, a temperature sensor 203, an alarm mechanism 204 and a spraying mechanism 205 which are respectively connected with the controller 201, wherein: the gas sensor 202 is arranged inside the battery compartment 210, and is used for acquiring the flue gas concentration information of the battery compartment 210 and sending the flue gas concentration information to the controller 201; the temperature sensor 203 is arranged inside the battery compartment 210, and is used for acquiring temperature information of the battery compartment 210 and sending the temperature information to the controller 201; the controller 201 is used for starting and stopping the alarm mechanism 204 and the spraying mechanism 205 according to the smoke concentration information and the temperature information of the battery bin 210; the alarm mechanism 204 is used for prompting the fire alarm condition of the battery bin 210 to the staff; the spraying mechanism 205 is disposed inside the battery compartment 210, and is used for extinguishing the fire of the battery compartment 210.

Specifically, this container energy storage system with fire control unit passes through temperature sensor 203 and gas sensor 202 can the fire alarm situation in the real-time supervision battery compartment 210, if discover the condition of a fire, can report to the police rapidly and put out a fire the action, has promoted container echelon energy storage system's factor of safety, reduces the condition of a fire and spreads, effectively reduces the loss that the condition of a fire brought.

However, the method is lack of processing of other various information such as temperature, voltage and the like, only the temperature and the gas concentration of the battery are detected by the sensor, and early warning is carried out according to the temperature and the type and the concentration of released gas, so that the reliability is not high, the requirement of the battery energy storage system on fire protection cannot be met on the early warning function, namely, the protection action cannot be started in advance, the fire protection can be started only after an accident occurs, and the safety is low.

It should be noted that the fire of the battery energy storage system can be divided into two categories: one is an electrically-induced fire, i.e., heat energy released due to a failure of electrical lines, consumers, appliances, and power supply and distribution equipment; energy released such as high temperature, arcing, electrical sparks, and non-failures; such as the glowing surfaces of electric heating appliances, fires caused by ignition of the body or other combustible materials under burning conditions, and also fires caused by lightning and static electricity; the other type is a fire caused by a battery, the safety of a battery system needs full-period monitoring and early warning, and warning and intervention are carried out in time at the germination stage of fire sign occurrence to ensure the overall safety of the energy storage station, so that early warning on the safety of the battery energy storage system is important.

In view of the problems in the prior art, the application provides a battery energy storage system early warning method, which is applied to a battery energy storage system, and can be used for processing temperature data corresponding to each battery cluster in the acquired battery energy storage system and at least one type of basic data such as voltage data and current data, extracting characteristic data for analysis, and generating warning information if the characteristic data is found to be abnormal, so that a worker can conveniently access the battery energy storage system to check the battery energy storage system as soon as possible.

Specifically, the battery energy storage system comprises a battery management system BMS, and the BMS adopts a three-level architecture: the Battery Management System comprises a Battery module controller (BMU), a Battery cluster controller (Battery Cluster Management System, BCMS) and an energy storage System Battery Management System (BAMS), wherein the BMU can acquire voltage, temperature and other data of each Battery cell in the Battery cluster in real time and transmit the data to the BCMS through a communication line, the BCMS can acquire current data and process the uploaded data and the current data, characteristic data are extracted and the related characteristic data are uploaded to the BAMS, the BAMS analyzes the characteristic data, and if abnormity is found, alarm information is generated. Like this, can the hierarchical management, all monitor the battery monomer in each battery cluster, improve processing speed, and make the reliability improve greatly, when taking place unusually, can also generate alarm information, make things convenient for the staff to insert early and investigate, open the protection action in advance, improve battery energy storage system's security.

Exemplarily, fig. 3 is a schematic flow diagram of a battery energy storage system early warning method provided in an embodiment of the present application, and as shown in fig. 3, the method in the embodiment of the present application includes:

s301, obtaining a plurality of characteristic data corresponding to each battery cluster in the battery energy storage system, wherein the characteristic data are used for representing the safety state of the battery cluster.

In this step, a plurality of characteristic data corresponding to each battery cluster in the battery energy storage system are obtained through the BMS in the battery energy storage system, and the BMS is used for monitoring and controlling the charging and discharging process of the battery according to the use environment, so that the energy stored by the battery is utilized to the maximum extent on the premise of ensuring the safety of the battery.

Specifically, the BMS adopts a three-layer control architecture design and comprises a BMU-BCMS-BAMS. The BMU acquires circuit data through high-precision voltage, temperature, current and the like, and realizes accurate acquisition functions of monomer voltage, battery pack string voltage, current, temperature and the like by matching with a digital-to-analog conversion circuit;

the BCMS summarizes the collected data of the BMU, and can extract characteristic data such as the State of Charge (SOC) of the battery cluster, the differential pressure of the battery cluster and the like; BAMS is used to enable communications, etc.

For example, in the application scenario of fig. 1, the BMS102 adopts a three-layer control architecture design, including a BMU-BCMS-BAMS, specifically, the BMU may acquire data of voltages, temperatures, and the like of the battery cells 1 to 16 in the 4 battery clusters 104 in real time, and transmit the data to the BCMS through a communication line, the BCMS processes the data, extracts feature data such as a minimum voltage, a maximum voltage, a differential pressure, a minimum temperature, a maximum temperature, a temperature difference, and the like in each battery cell, and uploads the relevant feature data to the BAMS, thereby acquiring a plurality of feature data corresponding to the 4 battery clusters.

S302, if the characteristic data meet preset abnormal conditions, generating alarm information.

In this embodiment of the present application, the preset abnormal condition may refer to a condition for determining whether the battery energy storage system is abnormally set, and whether the battery energy storage system is abnormal may be determined by determining whether the characteristic data is greater than a corresponding preset threshold, or whether the battery energy storage system is abnormal may be determined by determining whether the characteristic data changes at a too fast rate in a preset period, or whether the battery energy storage system is abnormal may be determined by satisfying both of the above two conditions, which is not specifically limited in this embodiment of the present application.

The preset threshold and the preset period can be set according to empirical values and can be manually modified, and the specific numerical values of the preset threshold and the preset period are not limited in the embodiment of the application.

In this step, the warning information may refer to prompt information for reminding a worker that the battery energy storage system is abnormal and asking for early access to perform troubleshooting, and the generated warning information may be sent to a terminal device corresponding to the worker or a corresponding cloud platform.

The display form of the warning information may be a message prompt box, for example, a message prompt box is displayed on the terminal device corresponding to the staff, the content in the message prompt box includes "the battery cluster 1 is abnormal, please examine and repair in time", or a call is made to the terminal device corresponding to the staff, the telephone voice content includes "the battery cluster 1 is abnormal, please examine and repair in time", or other forms, such as short message, mail, etc., so the embodiment of the present application does not specifically limit the content and form of sending the warning information.

For example, in the application scenario of fig. 1, after the BMS102 acquires 6 characteristic data, such as the minimum voltage, the maximum voltage, the voltage difference, the minimum temperature, the maximum temperature, and the temperature difference, corresponding to each of the 4 battery clusters, whether the lowest voltage, the highest voltage, the pressure difference, the lowest temperature, the highest temperature and the temperature difference in each battery cluster meet preset abnormal conditions can be judged respectively, if the highest voltage and the highest temperature are both larger than the corresponding set threshold value, the lowest voltage and the lowest temperature are both smaller than the corresponding set threshold value, and the temperature and/or voltage rise rate is too fast compared to the last time, if it is determined that the abnormality occurs in the battery cluster 1, generates alarm information, sends a message prompt box to the terminal device 105 corresponding to the staff member, the content in the message prompt box is 'the battery cluster 1 is abnormal and please overhaul in time' to remind the working personnel to access to check as early as possible.

Therefore, the early warning method for the battery energy storage system can judge whether the preset abnormal condition is met or not based on the plurality of characteristic data by acquiring the plurality of characteristic data corresponding to each battery cluster in the battery energy storage system, and when the plurality of characteristic data meet the preset abnormal condition, warning information is generated so that a worker can access the battery energy storage system to check the battery energy storage system as soon as possible. Therefore, the reliability is greatly improved based on the analysis of the acquired characteristic data and the real-time monitoring of the battery energy storage system, if the detection is abnormal, the alarm information can be sent to the cloud platform and the user terminal equipment, the protection action can be started in advance, the potential safety hazard or risk of the battery energy storage system can be recognized early, accurately and quickly, and the safety is improved.

In this step, for each battery cluster, temperature data and at least one type of basic data, such as voltage data, current data, SOC data, etc., of a plurality of battery cells in the battery cluster may be obtained, where the temperature data and the basic data include data sent by a corresponding sensor at the previous time and then; further, the maximum value and the minimum value of temperature data, the maximum value and the minimum value of voltage data, the maximum value of current data and the maximum value and the minimum value of SOC data corresponding to the battery cells in the same battery cluster are obtained, and then the first temperature difference, the second temperature difference, the first pressure difference and the second pressure difference are calculated respectively based on the previous time and the current data.

Specifically, the first temperature difference may be obtained by calculating a difference between a highest temperature and a lowest temperature corresponding to the battery cells in the battery cluster, the second temperature difference may be obtained by calculating a difference between a temperature at a previous time and a current temperature, and the first pressure difference may be obtained by calculating a difference between a highest voltage and a lowest voltage corresponding to the battery cells in the battery cluster; the second voltage difference may be obtained by calculating a difference between the voltage at the previous time and the present voltage.

It should be noted that at least one type Of basic information in the feature data may further include other types Of battery information, such as State Of Health (SOH) information, battery Power State (SOP) information, and the like, which is not specifically limited in this embodiment Of the application.

Therefore, according to the embodiment of the application, required characteristic data can be obtained by analyzing and processing the temperature data of each battery monomer and at least one type of basic data in the battery energy storage system, the reliability of the data is improved, and the early warning result is more accurate.

The maximum current is greater than a fifth threshold;

In this step, the first preset threshold may refer to a threshold set by the system for determining that there is an abnormal correspondence to the temperature in the battery cluster; the second preset threshold may refer to a threshold set by the system for determining that the temperature rise and fall rate in the battery cluster is too fast; correspondingly, the third preset threshold may refer to a threshold set by the system for determining that the voltage in the battery cluster is abnormal; the fourth preset threshold may refer to a threshold set by the system for determining that the voltage increase/decrease rate in the battery cluster is too fast; exceeding the preset threshold value is used for determining that the battery cluster is abnormal.

Similarly, the respective first threshold, second threshold, third threshold, fourth threshold, fifth threshold, sixth threshold and seventh threshold corresponding to the maximum temperature, the minimum temperature, the maximum current, the maximum voltage, the minimum voltage, the maximum SOC and the minimum SOC are also thresholds set by the system for determining that the temperature in the battery cluster is too high or too low, the current is too high, the voltage is too high or too low, and the SOC is too high or too low.

For example, in the application scenario of fig. 1, the BMS102 acquires four factors to determine whether there is an abnormality in the battery cluster, that is, the BMS102 may acquire a first temperature difference, a second temperature difference, a first pressure difference, and a second pressure difference of 4 battery clusters 104, respectively; the first temperature difference is the difference value between the highest temperature and the lowest temperature corresponding to the single batteries in the battery cluster; the second temperature difference is the difference value between the temperature data corresponding to each battery monomer in the same battery cluster at the last moment and the temperature data at the moment; the first voltage difference is the difference value between the highest voltage and the lowest voltage corresponding to the battery monomer in the battery cluster; the second voltage difference is the difference value between the voltage data corresponding to each battery monomer in the same battery cluster at the previous moment and the voltage data at the current moment;

further, whether the first temperature difference is greater than a first preset threshold value or not, whether each second temperature difference is greater than a second preset threshold value or not, whether the highest temperature is greater than the first threshold value or not and whether the lowest temperature is less than the second threshold value or not are judged; judging whether the first pressure difference is greater than a third preset threshold value, whether each second pressure difference is greater than a fourth preset threshold value, whether the highest voltage is greater than the third threshold value and whether the lowest voltage is less than the fourth threshold value; judging whether the maximum current is larger than a fifth threshold value; judging whether the highest SOC is greater than a sixth threshold value or not and whether the lowest SOC is smaller than a seventh threshold value or not;

And determining that the battery cluster 1 is abnormal by judging if the first temperature difference of the battery cluster 1 is greater than a first preset threshold, the second temperature difference is greater than a second preset threshold, the first pressure difference is greater than a third preset threshold, the second pressure difference is greater than a fourth preset threshold, the corresponding highest temperature is greater than the first threshold, the lowest temperature is less than the second threshold, the highest voltage is greater than the third threshold, the lowest voltage is less than the fourth threshold, the maximum current is greater than a fifth threshold, the highest SOC is greater than a sixth threshold, and the lowest SOC is less than a seventh threshold.

It can be understood that when it is determined whether an abnormality occurs in a battery cluster, one or more of the above-mentioned determination conditions may be used, and the more the determination conditions are, the higher the accuracy of the corresponding determination result is, which is not specifically limited in this application embodiment, the above-mentioned predetermined abnormality determination conditions may be combined arbitrarily, but the used determination conditions all need a determination factor of temperature, for example, only the first temperature difference is greater than a first predetermined threshold, the second temperature difference is greater than a second predetermined threshold, the highest temperature is greater than the first threshold, and the lowest temperature is less than the second threshold; or the first pressure difference is greater than a third preset threshold, the second pressure difference is greater than a fourth preset threshold, the highest voltage is greater than the third threshold, the lowest voltage is less than the fourth threshold, the first temperature difference is greater than the first preset threshold, the second temperature difference is greater than the second preset threshold, the highest temperature is greater than the first threshold, and the lowest temperature is less than the second threshold.

Therefore, according to the early warning method for the battery energy storage system provided by the embodiment of the application, the characteristic data is analyzed and judged, so that whether the battery energy storage system is abnormal or not can be accurately judged, and the accuracy for judging the abnormality of the battery energy storage system is improved.

In this step, if it is determined that the battery cluster is abnormal, the abnormal battery cell number in the battery cluster may be obtained, and then the battery cluster number corresponding to the abnormal battery cell may also be obtained, or the abnormal battery cell number may be directly obtained without obtaining the abnormal battery cell number when it is determined that the battery cluster is abnormal under a specific condition.

For example, in the application scenario of fig. 1, the BMS102 may respectively obtain a maximum temperature and a minimum temperature in the 4 battery clusters 104 and a second temperature difference of each of the battery cells 1 to 16, further, by determining that the second temperature differences of the battery cells 1 and 2 in the battery cluster 1 are both greater than a second preset threshold, and the maximum temperature in the battery cluster 1 and the battery cell 2 are greater than a first threshold, the minimum temperature is less than the second threshold, and the first temperature difference is greater than the first preset threshold, it is determined that the battery cells 1 and 2 in the battery cluster 1 are abnormal, further, by obtaining the battery cell numbers such as the battery cell "1" and the battery cell "2" that are abnormal in the battery cluster 1, generate corresponding warning information based on the battery cell 1 and the battery cell 2, such as "the battery cell 1 and the battery cell 2 in the battery cluster 1 are abnormal, please overhaul in time "to remind the staff to access to investigate as early as possible.

It should be noted that, when it is determined that there is an abnormality in the battery cluster, the present application does not specifically limit the number of battery cells having a second temperature difference greater than a preset threshold value, and may be configured such that the second temperature difference of one or more battery cells is greater than the preset threshold value, it is determined that the battery cluster is abnormal, or it may be determined that the number of battery cells having a second temperature difference greater than the preset threshold value is greater than the preset value, and accordingly, the second pressure difference is similar to the above, and will not be described herein again, and when it is determined that the lowest temperature and the highest temperature satisfy corresponding preset abnormal conditions, both may also satisfy only one of the conditions, and the temperature difference is greater than the preset threshold condition to determine that the battery cluster is abnormal, and in the present application, the present application may be flexibly combined, and specific limitations are not performed, and accordingly, the voltages, currents, and SOCs are also similar to the above, and will not be described in detail herein.

Therefore, the early warning method for the battery energy storage system provided by the embodiment of the application can accurately find the abnormal battery cluster to generate the warning information, and further accurately and quickly identify the potential safety hazard or risk of the battery energy storage system.

Optionally, the battery energy storage system further includes a fire fighting device, and the early warning method for the battery energy storage system provided by the present application can enable the fire fighting device to be linked with the BMS, perform full-period monitoring, classification early warning, and early intervention of fire fighting measures on the battery energy storage system, for example, the battery energy storage system takes a battery container device as an example, fig. 4 is a structural schematic diagram of arrangement of the battery container device provided by the present application, as shown in fig. 4, the battery energy storage system includes a battery cluster, a PT100 (temperature monitoring device), a control cabinet 404, a fire fighting device, and the like, and is integrated in a container, wherein the PT100 is installed at the top of the container, and is used for detecting the temperature in the container in real time and uploading the temperature to the BAMS; the fire fighting device comprises a fire detection system, a fire-fighting host, a main and standby fire-fighting system, a water fire-fighting system (not shown in the figure) and the like, the control cabinet 404 can comprise BMS (battery management system) and the fire-fighting host and the like, and the main and standby fire-fighting system can be a heptafluoropropane fire-fighting cabinet and comprises a main fire-extinguishing agent bottle group 402, a standby fire-extinguishing agent bottle group 403 and a pipe network system (not shown in the figure) and is used for spraying a fire-extinguishing agent when a fire breaks out; the fire detection system comprises an infrared thermal imaging camera 401, a composite detector (not shown in the figure) and the like, and is used for detecting VOC concentration, smoke concentration, combustible gas concentration, temperature parameters, open fire data and the like in the container; the composite detector comprises, but is not limited to, a VCO (voltage controlled oscillator), a smoke detector, a temperature detector, a CO detector and the like, and the infrared thermal imaging camera 401 is installed in the container and is also used for remote monitoring of the container by field workers and detection of a fire state.

It is understood that the battery energy storage system may include a battery management system BMS and a fire fighting device, and the embodiments of the present application are not particularly limited to the devices specifically included in the BMS and the fire fighting device, and fig. 4 is only an illustration,

optionally, the method further includes:

In this step, the monitored parameters within each battery cluster are obtained by the fire detection system, specifically, fig. 5 is a schematic structural diagram of distribution of a fire detection system according to an embodiment of the present application, and as shown in fig. 5, a composite detector is disposed at the top of each battery cluster, the composite detector comprises a VCO detector, a smoke detector, a temperature detector, a combustible gas detector and the like, each composite detector is in communication connection with a fire-fighting host, the fire-fighting host is fixed on the side wall of the container and can receive alarm information uploaded by the composite detector in real time, meanwhile, the fire-fighting host can communicate with a battery management system BMS, once the BMS judges that a thermal runaway risk exists in a battery monomer or a battery is in fire according to collected data, the BMS can output early warning information to the fire-fighting host, and further the fire-fighting host starts a corresponding warning strategy according to warning information uploaded by a composite detector or the early warning information output by the BMS.

The alarm strategy can be a fire-fighting strategy formulated by the system based on different conditions, for example, when a composite detector in a certain battery cluster detects that VOC and smoke concentration exceed threshold values, only alarm information is uploaded to remind workers to check the running state of equipment, and an audible and visual alarm is not sent out for alarming; and detect combustible gas concentration and exceed the threshold value when the composite detector, two and more than two composite detectors detect VOC concentration, smog concentration and exceed the threshold value simultaneously, then except uploading alarm information, still need control audible-visual annunciator to report to the police, start ventilation shutter, carry out ventilation, and visual management platform shows alarm information to but the staff is confirmed the back manual start fire extinguishing system.

Specifically, the monitoring parameters such as the temperature, the smoke concentration and the combustible gas concentration of the battery monomers in each area are monitored in real time through the arranged composite detector and the temperature monitoring system (temperature sensor), and further, when the composite detector detects that the temperature, the smoke concentration or the combustible gas concentration of a certain area are abnormal and reach a set alarm temperature, the fire-fighting host triggers the alarm strategy of the corresponding level to carry out fire-fighting operation, or when the temperature monitoring system detects that the temperature of the battery monomers in the battery cluster is abnormal, the BMS communicates with the fire-fighting host, and the alarm strategy of the corresponding level can also be triggered to carry out fire-fighting operation.

It should be noted that the temperature parameters measured by the composite sensor, such as a temperature sensor, disposed at the top of the battery cluster for transmitting the temperature parameters to the fire-fighting host, are different from the temperature information and temperature data measured by the temperature sensor disposed in the battery cluster next to the battery cells for transmitting the temperature data to the BMS, which can increase the accuracy of the detection.

It is understood that the monitoring parameters may also include other monitoring data, such as air humidity, and the like, which is not specifically limited in the embodiments of the present application.

Therefore, the alarm strategy of the corresponding grade can be selected based on the monitoring parameters transmitted by the composite detector and the temperature monitoring system, and then corresponding fire-fighting operation is carried out.

Optionally, selecting a corresponding level of alarm policy based on the monitoring parameter includes:

If the condition is determined to meet a second preset condition, triggering a secondary alarm strategy, wherein the second preset condition comprises: the VOC concentration in two or more battery clusters exceeds a fifth preset threshold, the smoke concentration exceeds a sixth preset threshold, and/or the first preset condition and the combustible gas concentration exceeds a seventh preset threshold;

In the embodiment of the present application, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, and the eighth preset threshold are thresholds that are set by a system and used for determining that the VOC concentration, the smoke concentration, the combustible gas concentration, and the temperature parameter in the battery cluster are abnormal.

It should be noted that the open fire data may be in multiple levels, where numeral 0 represents no open fire, numeral 1 represents level 1, the fire is weak, numeral 2 represents level 2, the fire is small, numeral 3 represents level 3, the fire is medium, numeral 4 represents level 4, the fire is large, and the like, or the open fire data may not be set with a level, that is, numeral 0 represents no open fire, and numeral 1 represents open fire.

For example, in the application scenario shown in fig. 1, the fire fighting device 103 may obtain monitoring parameters such as organic VOC concentration, smoke concentration, combustible gas concentration, temperature parameter, and open fire data, which are uploaded by the composite detector at the top of each battery cluster 104, and further, if the fire fighting device 103 determines that a certain battery cluster 104 is abnormal based on the monitoring parameters, it may determine which level of alarm policy is triggered according to the degree of abnormality.

For example, if the fire fighting device 103 determines that the VOC concentration in one battery cluster 104 exceeds a fifth preset threshold and the smoke concentration exceeds a sixth preset threshold, a primary alarm strategy is triggered; or, if the fire fighting device 103 determines that the VOC concentration in the two battery clusters 104 exceeds the fifth preset threshold and the smoke concentration exceeds the sixth preset threshold, the secondary alarm strategy is triggered, it can be understood that, if the fire fighting device 103 directly determines that the combustible gas concentration exceeds the seventh preset threshold, the secondary alarm strategy can also be triggered; if the fire fighting device 103 determines that the VOC concentration in the three battery clusters 104 exceeds the fifth preset threshold, the smoke concentration exceeds the sixth preset threshold, and the temperature parameter exceeds the eighth preset threshold, a three-level alarm strategy is triggered, it can be understood that the three-level alarm strategy can also be triggered if the fire fighting device 103 directly determines that a plurality of characteristic data meet a preset abnormal condition, or the fire fighting device 103 directly determines that the open fire data is not zero, and can also trigger the three-level alarm strategy.

It should be noted that the preset conditions corresponding to triggering the alarm policy of each level may be simultaneously met, or may also be met, which is not specifically limited in the embodiment of the present application, and the above is only an example.

Therefore, the embodiment of the application adopts a grading early warning strategy, so that the accuracy of judging potential safety hazards or risks of the battery energy storage system is improved, the situations of missing report and false report can be reduced, and the early maintenance and troubleshooting of the battery system are ensured.

Optionally, the method further includes:

if a primary alarm strategy is triggered, uploading first alarm information to the staff terminal equipment to remind staff of checking the running state of the equipment;

In the embodiment of the application, the first alarm information, the second alarm information and the third alarm information are similar to the definition of the alarm information, and the description of the alarm information may be specifically referred to, which is not described herein again, but the display contents of the first alarm information, the second alarm information and the third alarm information are different, if the display content of the first alarm information is that "the battery cluster 1 is in a fire, please check in time", the display content of the second alarm information is that "the battery cluster 1 and the battery cluster 2 are in a fire, and whether the fire extinguishing system is manually started", and the display content of the third alarm information is that "the battery cluster 1, the battery cluster 2 and the battery cluster 3 are in a large fire, the fire extinguishing system is started, the fire extinguishing agent is sprayed according to the fire extinguishing strategy, and the fire alarm is called.

For example, in the application scenario of fig. 1, if the fire fighting device 103 triggers a primary alarm policy, a first alarm message is uploaded to the staff terminal device 105, and the first alarm message indicates that "the battery cluster 1 is in a fire, please check in time", so as to remind the staff to check the operating state of the battery cluster 1; if the fire fighting device 103 triggers a secondary alarm strategy, the audible and visual alarm is controlled to alarm, the shutter is controlled to open to ventilate, second alarm information is uploaded to the staff terminal device 105, and the second alarm information indicates whether the battery cluster 1 and the battery cluster 2 are in fire or not, and the fire extinguishing system is manually started or not to prompt the staff to start the fire extinguishing system, and further, based on a starting instruction sent by the staff terminal device 105, fire is extinguished according to the fire extinguishing strategy; if the fire fighting device 103 triggers a three-level alarm strategy, the audible and visual alarm is controlled to give an alarm, third alarm information is sent to the visual management platform, and if a large fire occurs in the battery cluster 1, the battery cluster 2 and the battery cluster 3, the fire extinguishing system is started, a fire extinguishing agent is sprayed according to the fire extinguishing strategy, and a fire alarm call is dialed, so that more workers can see the third alarm information, participate in the fire extinguishing process or evacuate the fire in time, property loss and casualties are reduced, meanwhile, the fire fighting device 103 controls the battery energy storage system 101 to stop running, and fire extinguishing is performed according to the fire extinguishing strategy.

It will be appreciated that the container is fitted with shutters once the inside of the container H is detected ₂ Combustible gas such as CO exceeds standard, fire control unit and battery management system BMS communication, open the shutter and carry out ventilation, figure 6 is the structure schematic diagram of a container shutter that this application embodiment provided, as shown in figure 6, a plurality of shutters 601 of container installation for in time ventilation reduces the risk that combustible gas burns, however, when triggering tertiary early warning tactics or need start fire extinguishing system, can control shutter 601 and close, be used for guaranteeing the sealed effect of container, just can spray the fire extinguishing agent this moment and put out a fire.

Therefore, the embodiment of the application adopts a three-level alarm strategy, measures of corresponding levels are taken according to different fire conditions, the flexibility of fire treatment is improved, the thermal runaway spread of the battery is effectively inhibited, the possibility of secondary re-ignition of the battery is reduced, and the accuracy and the safety of fire extinguishment are improved.

Optionally, extinguishing the fire according to a fire extinguishing strategy, comprising:

In this step, fire is extinguished according to a fire extinguishing strategy, that is, a fire extinguishing system is started, fig. 7 is a schematic structural diagram of a fire extinguishing system provided in the embodiment of the present application, as shown in fig. 7, a main and standby fire extinguishing system includes a main fire extinguishing agent bottle group 402, a standby fire extinguishing agent bottle group 403, and a pipe network system; the pipe network system comprises a fire extinguishing agent delivery pipe 701 and a spray head 702. The fire suppressant delivery conduit 701 and spray head 702 are fixedly mounted on top of the battery cluster. The main and standby fire extinguishing agent bottle groups are respectively connected to a fire extinguishing agent conveying pipeline 701, each fire extinguishing agent bottle group is provided with an electromagnetic valve, the dosage of the fire extinguishing agent depends on the size of the container, the fire extinguishing agent is heptafluoropropane fire extinguishing agent, other types of fire extinguishing agents can be selected, and the embodiment of the application is not particularly limited to this.

It can be understood that two sets of temperature monitoring devices PT100 are installed at the top of the container, and the temperature in the container is monitored in real time and uploaded to the fire-fighting host. The PT100 has a wide working temperature range (-40-400 ℃), and when a fire disaster occurs in the container, the PT100 can normally work, and whether afterburning occurs or not is judged according to the temperature or temperature rising and falling rate data in the container.

Specifically, the flow of extinguishing fire according to the fire extinguishing strategy comprises: the fire-fighting host computer cuts off the power supply of the battery energy storage system through the communication with the BMS, and reserves an emergency power supply, closes the air conditioner and the fan, closes the ventilation shutter and the like, and further, extinguishes the fire for the first time, namely, after a certain time t ₁ After time delay, the main fire extinguishing agent bottle group is started, the electromagnetic valve of the main fire extinguishing agent bottle group is controlled to be opened, the fire extinguishing agent is sprayed through the pipeline and the spray head, the container is completely submerged, and meanwhile, the sound and light alarm signal is sent out, and the indicator light is lightened when the air is discharged without entering(ii) a Correspondingly, after the main fire extinguishing agent bottle group is started, the BMS monitors the temperature of the battery in the container in real time or the fire host judges whether open fire exists through the image shot by the infrared thermal imaging camera in real time, and after a certain time t ₂ When the battery temperature is continuously increased or open fire is found, the BMS communicates with the fire-fighting host to extinguish the fire for the second time, namely, the fire extinguishing agent bottle group is started, and simultaneously, an audible and visual alarm signal is sent out, and the indicator light is not turned on when the air is discharged, wherein t ₁ And t ₂ The setting can be carried out in advance or can be modified manually.

It can be understood that if the staff judges that the fire is not completely extinguished or the battery in the container is reburned through the image transmitted back by the infrared thermal imaging camera in the monitoring room, the emergency starting button can be directly pressed to manually start the fire extinguishing agent bottle group, so that the fire extinguishing agent in the fire extinguishing agent bottle group is sprayed through the fire extinguishing agent conveying pipeline to perform secondary fire extinguishing.

Therefore, the embodiment of the application can realize that the extinguishing agent sprays many times, and the limited thermal runaway unit of restraining is after-combustion, has promoted battery energy storage system's factor of safety, reduces the condition of a fire and spreads, effectively reduces the loss that the condition of a fire brought.

Optionally, the method further includes:

Specifically, after the fire fighting device determines that the secondary fire extinguishing fails, the water fire fighting system needs to be started, that is, the waterproof bag is controlled to be in a connection state, the water inlet valve is controlled to inject water into the battery energy storage system through the waterproof bag, the waterproof bag is connected with the fire fighting interface reserved on the container, fig. 8 is a schematic structural diagram of the container water fire fighting interface provided by the embodiment of the application, as shown in fig. 8, the water fire fighting interface 801 is reserved on the side wall of the container, and when a fire occurs, the waterproof bag and the water fire fighting interface 801 can be controlled to be in a connection state, and further, water is supplied into the container. The water fire-fighting interface meets the GB3265-1995 fire-fighting interface standard, and can also meet other established fire-fighting interface standards, which is not specifically limited in the embodiment of the application.

It should be noted that, in the first and second fire extinguishing processes, the fire-fighting bag and the fire-fighting interface of the reserved water on the container can be connected well, but are in a connection interruption state, for example, a control valve is installed at the interface to control the connection state of the fire-fighting bag; or, the fire-fighting bag and the reserved water fire-fighting interface on the container can be not connected, but after the fire-fighting water is in place, the fire-fighting water is manually connected to the reserved water fire-fighting interface to supply water into the container, and when the container is transported to the site and is installed and fixed, the water fire hydrant (the water fire-fighting interface and the water fire-fighting pipeline) can be pre-installed to a safe area in advance, so that the fire-fighting pipeline can be connected to the safe area and water can be injected into the safe area when a subsequent fire occurs.

Therefore, the embodiment of the application can greatly improve the probability of fire extinguishing through the matching of the main and standby fire extinguishing systems and the water fire extinguishing system, reduce the loss caused by fire and improve the safety of the battery energy storage system.

In the foregoing embodiment, the battery energy storage system early warning method provided in the embodiment of the present application is described, and in order to implement each function in the method provided in the embodiment of the present application, the electronic device serving as the execution main body may include a hardware structure and/or a software module, and implement each function in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

For example, fig. 9 is a schematic structural diagram of an early warning device of a battery energy storage system according to an embodiment of the present application, and as shown in fig. 9, the device includes: an acquisition module 910 and a processing module 920; the obtaining module 910 is configured to obtain a plurality of feature data corresponding to each battery cluster in the battery energy storage system, where the feature data is used to represent a safety state of the battery cluster;

the processing module 920 is configured to generate alarm information when the plurality of feature data meet a preset abnormal condition.

the highest current is greater than a fifth threshold;

Optionally, the processing module 920 is specifically configured to:

Optionally, the battery energy storage system further comprises a fire fighting device, and the battery energy storage system early warning further comprises a monitoring module and a triggering module;

the monitoring module is used for acquiring monitoring parameters in each battery cluster, wherein the monitoring parameters comprise Volatile Organic Compound (VOC) concentration, smoke concentration, combustible gas concentration, temperature parameters and open fire data;

And the triggering module is used for selecting the alarm strategies of the corresponding levels based on the monitoring parameters and triggering the fire-fighting operation of the alarm strategies of the corresponding levels based on the fire-fighting device.

Optionally, the triggering module is specifically configured to:

if the second preset condition is determined to be met, triggering a secondary alarm strategy, wherein the second preset condition comprises: the VOC concentration in two or more battery clusters exceeds a fifth preset threshold, the smoke concentration exceeds a sixth preset threshold, and/or the first preset condition and the combustible gas concentration exceeds a seventh preset threshold;

if the third preset condition is determined to be met, triggering a three-level alarm strategy, wherein the third preset condition comprises: and if the second preset condition and the temperature parameter exceed the eighth preset threshold, and/or the characteristic data meet preset abnormal conditions, and/or the open fire data are not zero, triggering a three-level alarm strategy.

Optionally, the early warning device of the battery energy storage system further comprises a primary warning module, a secondary warning module and a tertiary warning module;

The first-level alarm module is used for uploading first alarm information to the staff terminal equipment when a first-level alarm strategy is triggered so as to remind staff of checking the running state of the equipment;

the secondary alarm module is used for controlling the audible and visual alarm to give an alarm when a secondary alarm strategy is triggered, controlling the shutter to open for ventilation, and uploading second alarm information to staff terminal equipment to prompt staff to start a fire extinguishing system, wherein the fire extinguishing system is used for extinguishing fire according to the fire extinguishing strategy;

and the third-level alarm module is used for controlling the audible and visual alarm to give an alarm if a third-level alarm strategy is triggered, sending third alarm information to the visual management platform, controlling the battery energy storage system to stop running and extinguishing fire according to the fire extinguishing strategy.

Optionally, the three-level alarm module is specifically configured to:

Optionally, the early warning device of the battery energy storage system further comprises a water injection module, and the water injection module is used for:

The concrete implementation principle and effect of the early warning device for the battery energy storage system provided by the embodiment of the application can be referred to the corresponding relevant description and effect of the above embodiment, and redundant description is not repeated here.

An embodiment of the present application further provides a schematic structural diagram of an electronic device, and fig. 10 is a schematic structural diagram of an electronic device provided in an embodiment of the present application, and as shown in fig. 10, the electronic device may include: a processor 1001 and a memory 1002 communicatively coupled to the processor; the memory 1002 stores a computer program; the processor 1001 executes the computer program stored in the memory 1002, so that the processor 1001 executes the method according to any of the embodiments.

The memory 1002 and the processor 1001 may be connected by a bus 1003.

The embodiment of the present application further provides a computer-readable storage medium, where computer program execution instructions are stored, and when the computer program execution instructions are executed by a processor, the computer program execution instructions are used to implement the battery energy storage system early warning method in any one of the foregoing embodiments of the present application.

The embodiment of the present application further provides a chip for executing the instruction, where the chip is used to execute the battery energy storage system early warning method executed by the electronic device in any of the embodiments of the present application.

Embodiments of the present application further provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for early warning of a battery energy storage system, performed by an electronic device according to any of the foregoing embodiments of the present application, can be implemented.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to implement the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods described in the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The Memory may include a Random Access Memory (RAM), and may further include a Non-volatile Memory (NVM), such as at least one magnetic disk Memory, and may also be a usb disk, a removable hard disk, a read-only Memory, a magnetic disk, or an optical disk.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. The early warning method for the battery energy storage system is applied to the battery energy storage system, and comprises the following steps:

2. The method of claim 1, wherein the battery cluster comprises a plurality of battery cells, wherein the characterization data comprises temperature information, and further comprising at least one of: current information, voltage information, state of charge (SOC) information; the temperature information comprises a highest temperature, a lowest temperature, a first temperature difference and a second temperature difference; the current information includes a maximum current; the voltage information comprises a highest voltage, a lowest voltage, a first voltage difference and a second voltage difference; the SOC information comprises a highest SOC and a lowest SOC;

3. The method of claim 2, wherein the preset exception condition comprises: the first temperature difference is greater than a first preset threshold, the second temperature difference is greater than a second preset threshold, the highest temperature is greater than the first threshold, and the lowest temperature is less than the second threshold, and the method further comprises at least one of the following steps: the first voltage difference is greater than a third preset threshold, the second voltage difference is greater than a fourth preset threshold, the highest voltage is greater than the third threshold, and the lowest voltage is less than the fourth threshold;

The maximum current is greater than a fifth threshold;

4. The method of claim 2, wherein generating an alarm message if the plurality of feature data satisfy a predetermined abnormal condition comprises:

5. The method of any one of claims 1-4, wherein the battery energy storage system further comprises a fire fighting device, the method further comprising:

6. The method of claim 5, wherein selecting a respective level of alarm strategy based on the monitoring parameters comprises:

7. The method of claim 6, further comprising:

8. The method of claim 7, wherein extinguishing the fire according to a fire extinguishing strategy comprises:

9. The method of claim 8, further comprising:

10. A battery energy storage system early warning device, its characterized in that, the device includes:

11. An electronic device, comprising: a processor, and a memory communicatively coupled to the processor;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to implement the method of any of claims 1-9.

12. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, perform the method of any one of claims 1-9.

13. A computer program comprising a program code for performing the method according to any of claims 1-9 when the computer program is run by a computer.