CN116190817B

CN116190817B - Industrial lithium battery safety management method and device, electronic equipment and medium

Info

Publication number: CN116190817B
Application number: CN202310098090.1A
Authority: CN
Inventors: 张明; 王芳; 吴险峰
Original assignee: Beijing Suokeman Zhengzhuo Intelligent Electric Co ltd
Current assignee: Beijing Suokeman Zhengzhuo Intelligent Electric Co ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2024-02-06
Anticipated expiration: 2043-01-30
Also published as: CN116190817A

Abstract

The application relates to an industrial lithium battery safety management method, an industrial lithium battery safety management device, electronic equipment and a medium. The top at every lithium cell corresponds and is provided with the gas pipeline, and the gas pipeline intercommunication has the trunk line, and the gas pipeline is used for gathering the gas that corresponds the lithium cell and gives off, and the trunk line is used for gathering each gas pipeline, and the method includes: acquiring gas flow information in each branch gas pipeline; determining whether the lithium battery corresponding to each bronchus pipeline has abnormal gas leakage or not according to the gas flow information; if at least one abnormal lithium battery gas leakage exists, controlling the connection and disconnection of each abnormal lithium battery and a charging power supply; acquiring gas component detection information in a main pipeline; determining whether gas components generated by leakage of the lithium battery exist in the gas in the main pipeline according to the gas component detection information; if yes, determining an association area, and controlling each lithium battery in the association area to disconnect from a charging power supply. The lithium battery safety improvement method has the effect of improving the safety of the lithium battery.

Description

Industrial lithium battery safety management method and device, electronic equipment and medium

Technical Field

The present disclosure relates to the field of battery protection technologies, and in particular, to a method and apparatus for managing safety of an industrial lithium battery, an electronic device, and a medium.

Background

The lithium battery is used as an energy storage battery, stores energy by charging and provides power for a load by discharging. For lithium batteries, when the lithium battery is abnormal, such as temperature rise, internal short circuit, smoke generation, gas expansion, etc., accidents such as combustion or explosion are very easy to occur, while the lithium battery is usually arranged adjacently, and chain reaction is very easy to occur to other batteries during combustion or explosion, so the safety requirement of the lithium battery is usually higher.

At present, a Battery Management System (BMS) is generally adopted for monitoring, the BMS is utilized for collecting information such as voltage, current and temperature of the battery, and the charge and discharge processes of each lithium battery are controlled according to the collected information, so that abnormal detection and protection functions are realized. When the battery is charged, the voltage of the battery is usually detected by utilizing voltage detection in the BMS system, the battery is fully charged by representing the electric quantity when the voltage reaches a preset voltage value, and the charging power supply is automatically disconnected, so that the effect of automatic charging is realized.

However, when the voltage detection line in the BMS system fails due to poor contact and other conditions, the BMS system lacks voltage information, so that the battery is charged all the time easily, the battery is overcharged, the battery releases gas and swells, and then ignition, explosion and other conditions are caused, so that the safety of the lithium battery is seriously affected.

Disclosure of Invention

In order to improve the safety of a lithium battery, the application provides an industrial lithium battery safety management method, an industrial lithium battery safety management device, electronic equipment and a medium.

In a first aspect, the present application provides a method for safety management of an industrial lithium battery, which adopts the following technical scheme:

the utility model provides an industry lithium cell safety control method, is provided with the branch gas pipeline in the top of every lithium cell correspondence, and branch gas pipeline intercommunication has the trunk line, branch gas pipeline is used for gathering the gas that corresponds the lithium cell and gives off, the trunk line is used for gathering each branch gas pipeline, wherein, the method includes:

acquiring gas flow information in each branch gas pipeline, wherein the gas flow information is used for representing the flow condition of gas in the branch gas pipeline;

determining whether the lithium battery corresponding to each bronchus pipeline has abnormal gas leakage or not according to the gas flow information;

If at least one abnormal lithium battery gas leakage exists, controlling the connection and disconnection of each abnormal lithium battery and a charging power supply;

acquiring gas component detection information in the main pipeline, wherein the gas component detection information is used for representing the components and the concentration of the gas in the main pipeline;

determining whether gas components generated by leakage of the lithium battery exist in the gas in the main pipeline according to the gas component detection information;

if so, determining an associated area corresponding to the abnormal gas leakage, and controlling each lithium battery in the associated area to disconnect from a charging power supply.

Through adopting above-mentioned technical scheme, when the lithium cell overcharged and lead to gas to separate out, gas in the branch gas pipeline will flow, consequently, according to the gas flow information that every branch gas pipeline corresponds, can judge in advance that whether there is gas leakage unusual in the lithium cell in the branch gas pipeline, and disconnect the connection of unusual lithium cell and charging source, afterwards, according to gas composition detection information, confirm whether there is the gas that lithium cell separated out in the trunk line really, if there is the gas composition that lithium cell leaked out and produced in the gas in the trunk line, disconnect each lithium cell in the association region with charging source again, on the one hand can confirm that the lithium cell has gas to separate out through the mode that gas composition detected, and further disconnect the charging source in the association region that unusual involved, namely, when BMS system is because voltage acquisition function became invalid for each lithium cell produces overcharged, charging source can in time break off, reduce the probability that the battery bulge is explosion, thereby be favorable to improving the security of lithium cell. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

In one possible implementation manner, the determining, according to the gas flow information, whether the lithium battery corresponding to each of the bronchus channels has a gas leakage abnormality includes:

determining the flow direction of the gas in each branch gas pipeline according to the gas flow information in each branch gas pipeline;

and determining whether the lithium battery corresponding to each of the bronchus channels has abnormal gas leakage according to whether the flow direction of the gas is in a preset flushing direction, wherein the preset flushing direction is used for representing the direction of impact on each of the bronchus channels when the lithium battery educes the gas.

Through adopting above-mentioned technical scheme, obtain the flow direction of gas through gas flow information to confirm whether the lithium cell has the gas leakage unusual, so that can in time discover when the lithium cell has the gas leakage unusual, and in time cut the connection of lithium cell and charging source.

In another possible implementation manner, the determining the association area corresponding to the abnormal gas leakage includes:

determining the concentration of the gas generated by the leakage according to the gas component detection information;

determining an abnormal leakage grade corresponding to each abnormal lithium battery according to the concentration, wherein the abnormal leakage grade is used for representing the average grade of gas leakage of the abnormal lithium battery;

And determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage grade.

By adopting the technical scheme, the abnormal leakage level is determined according to the concentration of the gas component detected in the main pipeline, and then the associated area corresponding to the current gas leakage abnormality is determined according to the abnormal leakage level, so that the associated area is determined adaptively according to the magnitude of the abnormal leakage level, namely each lithium battery which needs to be disconnected with the charging power supply is determined adaptively.

In another possible implementation manner, the determining, according to the concentration, an abnormal leakage level corresponding to each abnormal lithium battery includes;

determining average concentration according to the number of abnormal lithium batteries and the concentration, and taking the average concentration as the concentration corresponding to each abnormal lithium battery;

and determining the abnormal leakage grade corresponding to each abnormal lithium battery according to the concentration corresponding to each abnormal lithium battery.

By adopting the technical scheme, when the abnormal leakage grade corresponding to the abnormal lithium battery is determined, the concentration of leaked gas in the main pipeline is considered, and the number of the abnormal lithium batteries is considered, so that the abnormal leakage grade is determined, and the determined abnormal leakage grade is more attached to the actual gas leakage degree of the current abnormal lithium battery.

In another possible implementation manner, determining the corresponding association area according to the abnormal leakage level includes:

determining the association range corresponding to each abnormal lithium battery according to the abnormal leakage grade corresponding to each abnormal lithium battery;

and determining an association area according to the association range corresponding to each abnormal lithium battery.

By adopting the technical scheme, when the association area is determined, the association range corresponding to each abnormal lithium battery is respectively determined, and then the association area is determined by each association range, so that an implementation mode for determining the association area is provided.

In another possible implementation manner, the determining the association area according to the association range corresponding to each abnormal lithium battery includes:

determining a first boundary and a second boundary according to the association range corresponding to each abnormal lithium battery, wherein each association range is positioned between the first boundary and the second boundary;

an area between the first and second boundaries is determined as an association area.

By adopting the technical scheme, when the abnormal area is determined according to the association range, the association range corresponding to each abnormal lithium battery and the area between different association ranges can be determined as the association area, so that the blocking measures can be taken in advance, and the probability of further diffusion of the harm can be reduced.

In another possible implementation, the method further includes:

judging whether the gas leakage abnormality meets a preset abnormal condition or not, wherein the preset abnormal condition comprises that the number of abnormal lithium batteries exceeds a preset number threshold value and/or the abnormal leakage level exceeds a preset leakage level;

if the preset abnormal condition is met, the charging power supply is controlled to be disconnected with each lithium battery;

wherein, according to the abnormal leakage level, determining an associated area corresponding to the abnormal gas leakage, and controlling each lithium battery in the associated area to disconnect from the charging power supply, including:

if the preset abnormal condition is not met, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage grade, and controlling each lithium battery in the associated area to disconnect from the charging power supply.

Through adopting above-mentioned technical scheme, when meeting and predetermineeing abnormal conditions, the characterization has most lithium batteries all to take place to damage promptly at present, or the trouble of the lithium battery that takes place to damage is serious, will directly control charging source disconnection and all lithium batteries this moment to can reduce the serious probability of trouble.

In a second aspect, the present application provides an industrial lithium battery safety management device, which adopts the following technical scheme:

an industry lithium cell safety control device corresponds in the top of every lithium cell and is provided with a gas pipeline, and the gas pipeline intercommunication has the trunk line, the gas pipeline is used for gathering the gas that corresponds the lithium cell and gives off, the trunk line is used for gathering each gas pipeline, wherein, the device includes:

the information acquisition module is used for acquiring gas flow information in each branch gas pipeline, and the gas flow information is used for representing the flow condition of the gas in the branch gas pipeline;

the abnormality judgment module is used for determining whether the lithium battery corresponding to each bronchus pipeline has abnormal gas leakage according to the gas flow information;

the first control module is used for controlling the connection and disconnection of each abnormal lithium battery and the charging power supply when at least one abnormal lithium battery gas leakage exists;

the component acquisition module is used for acquiring gas component detection information in the main pipeline, wherein the gas component detection information is used for representing the components and the concentration of the gas in the main pipeline;

the component detection module is used for determining whether gas components generated by leakage of the lithium battery exist in the gas in the main pipeline according to the gas component detection information;

And the second control module is used for determining an associated area corresponding to the abnormal gas leakage and controlling each lithium battery in the associated area to disconnect from a charging power supply when the lithium battery is connected with the charging power supply.

Through adopting above-mentioned technical scheme, when the lithium cell overcharges and leads to gas to separate out, gas in the branch gas pipeline will flow, consequently, unusual judgement module is according to the gas flow information that every branch gas pipeline corresponds, can judge in advance whether the lithium cell in the branch gas pipeline has gas leakage unusual, and first control module breaks off the connection of unusual lithium cell and charging source, afterwards, whether by the gaseous composition detection information of ingredient detection module, confirm whether there is the gas that the lithium cell separates out in the trunk line, if there is the gaseous composition that lithium cell leaked out and produced in the gas in the trunk line, the connection disconnection of each lithium cell in the association region and charging source is again broken off by the second control module, on the one hand can confirm whether there is gas to separate out the lithium cell through the mode that gaseous composition detected, and further break off the charging source in the association region that unusual relates to, namely, when BMS system is because the voltage acquisition function is inefficacy, make each lithium cell produce when overcharging, the probability that the battery is expanded and explodes is reduced, thereby be favorable to improving the security of lithium cell. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

In one possible implementation manner, the abnormality determination module is specifically configured to, when determining, according to the gas flow information, whether a gas leakage abnormality exists in the lithium battery corresponding to each of the bronchus channels:

In another possible implementation manner, the second control module is specifically configured to, when determining the association area corresponding to the abnormal gas leakage:

In another possible implementation manner, the second control module is specifically configured to, when determining, according to the concentration, an abnormal leakage level corresponding to the abnormal lithium battery;

In another possible implementation manner, the second control module is specifically configured to, when determining the corresponding association area according to the abnormal leakage level:

In another possible implementation manner, the second control module is specifically configured to, when determining the association region according to the association range corresponding to each abnormal lithium battery:

In another possible implementation, the apparatus further includes:

the condition judgment module is used for judging whether the gas leakage abnormality meets a preset abnormal condition or not, wherein the preset abnormal condition comprises that the number of abnormal lithium batteries exceeds a preset number threshold value and/or the abnormal leakage grade exceeds a preset leakage grade;

the third control module is used for controlling the charging power supply to disconnect each lithium battery when the preset abnormal condition is met;

the second control module is specifically configured to, when determining, according to the abnormal leakage level, an association area corresponding to the abnormal gas leakage, and controlling each lithium battery in the association area to disconnect from the charging power supply:

when the preset abnormal condition is not met, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage grade, and controlling each lithium battery in the associated area to disconnect from the charging power supply.

In a third aspect, the present application provides an electronic device, which adopts the following technical scheme:

an electronic device, the electronic device comprising:

At least one processor;

a memory;

at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: and executing the industrial lithium battery safety management method.

In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:

a computer-readable storage medium, comprising: a computer program capable of being loaded by a processor and executing the above-described industrial lithium battery safety management method is stored.

In summary, the present application at least includes the following beneficial technical effects:

when the lithium battery is overcharged and gas is separated out, the gas in the branch gas pipeline flows, so that whether the lithium battery in the branch gas pipeline is abnormal in gas leakage or not can be judged in advance according to the gas flow information corresponding to each branch gas pipeline, the abnormal lithium battery is disconnected from a charging power supply, whether the gas separated out from the lithium battery exists in the main pipeline is determined according to the gas component detection information, if the gas component generated by the leakage of the lithium battery exists in the gas in the main pipeline, the connection between each lithium battery in the relevant area and the charging power supply is disconnected, on one hand, whether the lithium battery exists in the gas component detection mode can be determined, and further, the charging power supply in the relevant area related to the abnormality is disconnected, namely, when the BMS system is invalid due to the voltage acquisition function, the charging power supply can be disconnected in time, the probability of explosion caused by swelling of the battery is reduced, and the safety of the lithium battery is improved. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

Drawings

FIG. 1 is a flow chart of an industrial lithium battery safety management method according to an embodiment of the present application;

FIG. 2 is a block schematic diagram of an industrial lithium battery safety management device according to an embodiment of the present application;

fig. 3 is a schematic diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Industrial lithium batteries are usually arranged in close proximity, when the lithium batteries are overcharged, the lithium batteries may be inflated after being deflated, smoke and fire of the lithium batteries may be caused later, when the lithium batteries smoke and fire, on one hand, the lithium batteries are faulty, on the other hand, the faults of the lithium batteries are easy to influence surrounding lithium batteries, then other lithium batteries are faulty, and the fault range is enlarged.

Therefore, set up a gas pipeline in every lithium cell top, when the lithium cell overcharged, will separate out gas in the lithium cell, get into gas pipeline, every lithium cell all corresponds a gas pipeline, every gas pipeline intercommunication has the trunk line, is provided with gaseous composition detection device on the trunk line for detect the gaseous composition in the trunk line in order to discern whether each lithium cell has the condition that takes place the gas and separate out.

The embodiment of the application provides an industrial lithium battery safety management method, which is executed by electronic equipment, and referring to fig. 1, the method comprises the following steps:

and step S101, acquiring gas flow information in each branch gas pipeline.

Wherein the gas flow information is used to characterize the flow of gas within the bronchial passages. The branch gas pipeline is arranged corresponding to the lithium battery and is used for collecting the gas emission condition of the lithium battery.

Specifically, when the lithium battery educes gas, the gas generally flows in the branch gas pipeline, or the gas educed by the lithium battery changes the flow direction of the air in the branch gas pipeline, so that the flow direction of the gas in the branch gas pipeline can be directly used for judging whether each lithium battery educes gas.

The gas flow information characterizes the flow condition of the gas in the corresponding branch gas pipeline, and the flow condition can be specifically the flow direction.

Step S102, determining whether the lithium battery corresponding to each bronchus pipeline has abnormal gas leakage according to the gas flow information.

Specifically, after the gas is precipitated from the lithium battery, the abnormality of the gas precipitated from the lithium battery is increased along with the change of time, and the gas is also required to be spread for a certain time.

Therefore, in order to reduce the probability of the continuous development of the abnormal lithium battery, when the gas flow information is acquired, whether the abnormal gas leakage exists in the lithium battery corresponding to each of the branch gas pipelines is determined according to the gas flow information. According to the flow direction of the gas in the branch gas pipeline, whether the lithium battery has abnormal gas leakage or not can be rapidly judged.

And step S103, if at least one abnormal lithium battery gas leakage exists, controlling the connection and disconnection of each abnormal lithium battery and the charging power supply.

Specifically, when detecting that the at least one lithium battery has abnormal gas leakage, the connection and disconnection of the at least one abnormal lithium battery and the charging power supply can be directly controlled, the lithium battery with abnormal gas leakage is not charged any more, and the probability of continuous development of the abnormal lithium battery is reduced.

For example, when there is an abnormality in gas leakage in each of the lithium battery 1, the lithium battery 3, and the lithium battery 4, the connection and disconnection of the lithium battery 1 and the charging power supply are controlled, the connection and disconnection of the lithium battery 3 and the charging power supply are controlled, and the connection and disconnection of the lithium battery 4 and the charging power supply can be continued for the lithium battery having no abnormality in gas leakage, for example, the lithium battery 2.

Step S104, acquiring gas component detection information in the main pipeline.

The gas component detection information is used for representing the components and the concentration of the gas in the main pipeline.

Specifically, when it is determined whether or not each lithium battery has an abnormality of gas leakage based on the gas flow information, there may be an error, so in order to further verify that the gas flow is confirmed to be generated due to gas precipitation in the lithium battery, after the connection of each abnormal lithium battery to the charging power supply is controlled to be disconnected, gas composition detection information in the main pipe is acquired, and the composition of the gas in the main pipe can be determined based on the gas composition detection information.

Step S105, determining whether the gas component generated by the leakage of the lithium battery exists in the gas in the main pipeline according to the gas component detection information.

Specifically, when the gas of the lithium battery leaks or educes, CH4, CO, C2H4, H2S, HF, HCI, SO2, HCN and other gases may exist in the gas educed from the lithium battery, by detecting the gas in the main pipe, when at least one gas is detected, the gas component educed from the lithium battery exists in the gas in the main pipe, or the gas leakage of the lithium battery does exist.

And S106, if so, determining an associated area corresponding to the abnormal gas leakage, and controlling each lithium battery in the associated area to disconnect from a charging power supply.

Specifically, when gas components precipitated from the lithium battery exist in the gas in the main pipeline, the characterization and judgment are correct, the associated area corresponding to the abnormal gas leakage is determined, and on the basis of disconnecting each abnormal lithium battery from the charging power supply, the connection between each lithium battery in the associated area and the charging power supply is disconnected, so that the probability that the abnormal range of the abnormal lithium battery is enlarged is reduced.

According to the industrial lithium battery safety management method, when the lithium battery is overcharged to cause gas precipitation, the gas in the branch gas pipeline flows, so that whether the lithium battery in the branch gas pipeline is abnormal in gas leakage or not can be judged in advance according to the gas flow information corresponding to each branch gas pipeline, the abnormal lithium battery is disconnected with a charging power supply, whether the gas in the main pipeline is truly precipitated by the lithium battery or not is determined according to gas component detection information, if the gas component generated by the lithium battery leakage exists in the gas in the main pipeline, the connection between each lithium battery in an associated area and the charging power supply is disconnected, on one hand, whether the lithium battery is precipitated by the gas component detection mode is determined, and further the charging power supply in the associated area related to the abnormality is disconnected, namely, when the BMS system fails due to a voltage acquisition function, the charging power supply can be disconnected in time when each lithium battery is overcharged, the probability of battery swelling and explosion is reduced, and safety of the lithium battery is improved. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

In a possible implementation manner of this embodiment of the present application, in step S102, it is determined whether a gas leakage abnormality exists in the lithium battery corresponding to each of the bronchus according to the gas flow information, specifically, the method may be implemented by step S1021 (not shown in the figure) and step S1022 (not shown in the figure), where:

and S1021, determining the flow direction of the gas in each branch gas pipeline according to the gas flow information in each branch gas pipeline.

Specifically, when determining whether the lithium battery corresponding to any one of the branch gas pipelines has abnormal gas leakage according to the gas flow information, determining the flow direction of the gas in any one of the branch gas pipelines according to the gas flow information in any one of the branch gas pipelines, for example, taking the flowing inlet branch gas pipeline as the positive direction, and when the gas flows from the lithium battery into the branch gas pipeline, determining that the flow direction of the gas in any one of the branch gas pipelines is the positive direction according to the gas flow information.

Step S1022, determining whether the lithium battery corresponding to each bronchus pipeline has abnormal gas leakage according to whether the flowing direction of the gas is in the preset flushing direction.

The preset impact direction is used for representing the range of directions causing impact on the bronchus when the lithium battery educes gas.

Specifically, when the lithium battery is separated out of the gas, the gas will normally flow into the branch gas pipe, i.e. if the flow into the branch gas pipe is positive, the preset direction is positive.

When gas flows from the lithium battery into the branch gas pipeline, the flow direction of the gas is characterized as a preset flushing direction, namely, the lithium battery corresponding to any branch gas pipeline has abnormal gas leakage.

When the gas flows out from the bronchus, the flow direction of the gas is characterized as not belonging to the preset flushing direction, namely, the lithium battery corresponding to any bronchus has no abnormal gas leakage.

In one possible implementation manner of the embodiment of the present application, in step S106, determining the association area corresponding to the abnormal gas leakage may be specifically implemented through step S1061 (not shown in the figure), step S1062 (not shown in the figure), and step S1063 (not shown in the figure), where:

step S1061, determining the concentration of the gas generated by the leakage based on the gas component detection information.

Specifically, if it is determined that a gas component generated by leakage of the lithium battery exists in the gas in the main pipeline, the lithium battery which is actually abnormal at present is characterized, in order to prevent the abnormal lithium battery from affecting the lithium battery which is close to the main pipeline, all relevant areas which are affected by the abnormal leakage of the gas at the moment are determined, and all the lithium batteries in the relevant areas are disconnected from a charging power supply, so that the influence of the abnormal lithium battery on the lithium battery in the relevant areas is reduced.

When the associated area is determined, the concentration corresponding to the gas component generated by the leakage of the lithium battery is determined according to the gas component detection information, and when the concentration of the gas component is higher, the abnormality degree of the lithium battery is generally indicated to be possibly higher or the range of the abnormality influence of the lithium battery is larger.

Step S1062, determining an abnormal leakage level corresponding to each abnormal lithium battery according to the concentration.

Wherein, the abnormal leakage level is used for representing the average level of gas leakage of the abnormal lithium battery.

Specifically, after determining the concentration of the gas component, the abnormal leakage level corresponding to each abnormal lithium battery is determined according to the concentration. For a lithium battery, the higher the concentration of gas evolved from the lithium battery, i.e., the higher the abnormal leakage level corresponding to the lithium battery, the wider the range affected by the lithium battery.

And determining the abnormal leakage grade corresponding to each abnormal lithium battery, and determining the range influenced by each abnormal lithium battery according to the abnormal leakage grade corresponding to each abnormal lithium battery.

In one possible implementation manner of the embodiment of the present application, in step S1062, the abnormal leakage level corresponding to each abnormal lithium battery is determined according to the concentration, which may be specifically implemented by step S1062a (not shown in the figure) and step S1062b (not shown in the figure), where;

Step S1062a, determining an average concentration according to the number and the concentration of the abnormal lithium batteries, as the concentration corresponding to each abnormal lithium battery.

Specifically, in determining the abnormal leakage level according to the concentration, since the concentration is affected by both the number of abnormal lithium batteries, for example, the concentration when one abnormal lithium battery is gas-discharged is higher than the concentration when two abnormal lithium batteries are gas-discharged simultaneously (the degree of gas discharge is the same); and is also affected by the degree of gas evolution of each abnormal lithium battery, for example, when one abnormal lithium battery evolves gas according to degree a, the concentration of gas corresponding to degree a is higher than the concentration of gas corresponding to degree B when degree a is greater than degree B, when one abnormal lithium battery evolves gas according to degree B.

The abnormal leakage level is the degree of gas precipitation of the lithium battery which characterizes the abnormality, and when the abnormal leakage level of each abnormal lithium battery is determined directly according to the concentration of the gas in the main pipeline, a large error exists in the judgment of the abnormal leakage level, so that when the abnormal leakage level is determined, the average concentration corresponding to each abnormal lithium battery can be determined by utilizing the number of the abnormal lithium batteries measured according to the gas flow information and the concentration of the leaked gas component measured by the main pipeline, for example, the gas concentration is 2mg/ml, and the average concentration is 0.5mg/ml when the number of the abnormal lithium batteries is 4.

Step S1062b, determining an abnormal leakage level corresponding to each abnormal lithium battery according to the concentration corresponding to each abnormal lithium battery.

Specifically, after determining the average concentration, the average concentration reflects the average concentration level of the precipitated gas corresponding to each abnormal lithium battery, and according to the average concentration, determining an abnormal leakage level corresponding to each abnormal lithium battery, wherein a plurality of abnormal leakage levels are preset in the electronic device, each abnormal leakage level corresponds to a concentration range, for example, four abnormal leakage levels, namely, a first abnormal leakage level, a second abnormal leakage level, a third abnormal leakage level and a fourth abnormal leakage level, are preset in the electronic device, and the fourth abnormal leakage level is the highest, the first abnormal leakage level is the lowest, wherein the first abnormal leakage level corresponds to a first concentration range, the first concentration range is (0, 0.5), the second abnormal leakage level corresponds to a second concentration range, and the second concentration range is (0.5, 1) … ….

And determining an abnormal leakage grade corresponding to the concentration range according to the concentration range to which the average concentration belongs, wherein the abnormal leakage grade is the abnormal leakage grade corresponding to the abnormal lithium battery, for example, the average concentration is 0.5, and the abnormal leakage grade is the first abnormal leakage grade.

Step S1063, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage level.

Specifically, after the abnormal leakage level is determined, an associated area corresponding to the abnormal gas leakage is determined according to the abnormal leakage level, when the abnormal leakage level is higher, the corresponding associated area is relatively larger, the influence range is wider, and at the moment, each lithium battery in the associated area is directly controlled to be disconnected from a charging power supply.

In one possible implementation manner of this embodiment of the present application, in step S1063, the corresponding association area is determined according to the abnormal leakage level, which may be specifically implemented by step S1063a (not shown in the figure) and step S1063b (not shown in the figure), where:

step S1063a, determining the association range corresponding to each abnormal lithium battery according to the abnormal leakage level corresponding to each abnormal lithium battery.

Specifically, the associated ranges for different abnormal leakage levels are different. The higher the abnormal leakage level, the greater the corresponding correlation range. The association range is used to characterize the range to which each abnormal lithium battery specifically corresponds, for example: the lithium batteries 1 to 10 are arranged in this order, and if the lithium battery 1, the lithium battery 3, and the lithium battery 5 are abnormal lithium batteries, the associated ranges corresponding to the lithium battery 1, the lithium battery 3, and the lithium battery 5 are determined.

Corresponding influence quantity is preset for different abnormal leakage grades, and the influence quantity is used for representing the quantity of lithium batteries on the same side in each lithium battery influenced by the lithium batteries of the abnormal leakage grade. For example, when the leakage of the abnormal leakage level a occurs in the lithium battery 3, the corresponding influence quantity is 1, and the characterization will affect one lithium battery on both sides of the lithium battery 3, that is, the corresponding association range of the lithium battery 3 includes the corresponding ranges of the lithium battery 2, the lithium battery 3 and the lithium battery 4. Therefore, according to the abnormal leakage grade corresponding to each abnormal lithium battery and the influence quantity corresponding to the abnormal leakage grade, the association range corresponding to the abnormal lithium battery can be determined.

Step S1063b, determining an association area according to the association range corresponding to each abnormal lithium battery.

Specifically, after the association ranges corresponding to the abnormal lithium batteries are combined, an association region can be obtained, and then it can be determined that the lithium batteries in the association region are enabled to cut off a charging power supply.

In one possible implementation, each association range may be directly used as a part of the association area, that is, if the association range includes the lithium battery 1, the lithium battery 2, the lithium battery 4, and the lithium battery 5, the association area is the area corresponding to the lithium battery 1, the lithium battery 2, the lithium battery 4, and the lithium battery 5.

In another possible implementation manner, in step S1063b, the association area is determined according to the association range corresponding to each abnormal lithium battery, and may also be implemented by step Sa1 (not shown in the figure) and step Sa2 (not shown in the figure), where:

step Sa1, determining a first boundary and a second boundary according to the association range corresponding to each abnormal lithium battery.

Wherein each association range is located between the first boundary and the second boundary.

Specifically, when determining the association region according to each association range, the first boundary and the second boundary may also be determined according to the association range corresponding to each abnormal lithium battery, for example: the association range includes lithium battery 1, lithium battery 2, lithium battery 4, and lithium battery 5, and the first boundary may be lithium battery 1, the second boundary may be lithium battery 5, or the first boundary may be lithium battery 5, and the second boundary may be lithium battery 1.

Step Sa2, determining the area between the first boundary and the second boundary as the associated area.

Specifically, the areas between the first boundary and the second boundary are each determined as the associated area, and the explanation will be continued taking the example in step Sa1 as an example, that is, the areas corresponding to the lithium battery 1, the lithium battery 2, the lithium battery 3, the lithium battery 4, and the lithium battery 5 are regarded as the associated areas. The partial area in the middle of each association range is also extremely easy to be influenced by the abnormality of each party, so that the area between the first boundary and the second boundary is directly determined as the association area, and blocking measures are adopted in advance to reduce the probability of further spreading of the hazard.

In one possible implementation manner of the embodiment of the present application, the method further includes a step Sb1 (not shown in the figure) and a step Sb2 (not shown in the figure), where:

and step Sb1, judging whether the abnormal gas leakage meets the preset abnormal condition or not.

The preset abnormal conditions comprise that the number of abnormal lithium batteries exceeds a preset number threshold value and/or the abnormal leakage level exceeds a preset leakage level.

Specifically, when the number of abnormal lithium batteries exceeds a preset number threshold value and/or when the abnormal leakage level is higher than a preset leakage level, it is indicated that most of the lithium batteries in each current lithium battery may have abnormality, and other lithium batteries which do not display abnormality may be about to be abnormal, so that only the charging power supply of some lithium batteries which have already displayed abnormality and the charging power supply in the relevant area are turned off at this time, and the situation that other lithium batteries which do not display abnormality at present also have gas leakage is difficult to be blocked.

Therefore, it is determined whether the current occurrence of the abnormal gas leakage satisfies a preset abnormal condition, that is, whether the number of lithium batteries in which the current occurrence of the abnormality exceeds a preset number threshold, and/or whether the abnormal leakage level exceeds a preset leakage level.

And step Sb2, if the preset abnormal condition is met, controlling the charging power supply to disconnect from each lithium battery.

Specifically, when a preset abnormal condition is met, namely, the fact that most lithium batteries are damaged currently exists is indicated, or the faults of the damaged lithium batteries are serious, at the moment, the charging power supply is directly controlled to be disconnected with all the lithium batteries, so that the probability of serious faults is reduced.

In step S1063, determining an association area corresponding to the abnormal gas leakage according to the abnormal leakage level, and controlling each lithium battery in the association area to disconnect from the charging power source may specifically include step S1063' (not shown in the figure), where:

step S1063', if the preset abnormal condition is not satisfied, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage level, and controlling each lithium battery in the associated area to disconnect from the charging power supply.

Specifically, when the preset abnormal condition is not met, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage grade, and disconnecting each lithium battery in the associated area from the charging power supply.

The above embodiments describe a method for industrial lithium battery safety management from the aspect of a method flow, and the following embodiments describe an apparatus for industrial lithium battery safety management from the aspect of a virtual module or a virtual unit, specifically the following embodiments.

Referring to fig. 2, an industrial lithium battery safety management device 200 is provided with a branch gas pipeline above each lithium battery, the branch gas pipeline is communicated with a main pipeline, the branch gas pipeline is used for collecting gas emitted by the corresponding lithium battery, the main pipeline is used for collecting each branch gas pipeline, wherein the device comprises:

an information acquisition module 201, configured to acquire gas flow information in each of the bronchus, where the gas flow information is used to characterize a flow condition of the gas in the bronchus;

the abnormality determination module 202 is configured to determine whether a gas leakage abnormality exists in the lithium battery corresponding to each of the bronchus according to the gas flow information;

a first control module 203, configured to control disconnection of each abnormal lithium battery from the charging power source when there is at least one abnormality of gas leakage of the lithium battery;

a component obtaining module 204, configured to obtain gas component detection information in the main pipe, where the gas component detection information is used to characterize components and concentrations of the gas in the main pipe;

a component detection module 205, configured to determine whether a gas component generated by leakage of the lithium battery exists in the gas in the main pipe according to the gas component detection information;

and the second control module 206 is configured to determine an association area corresponding to the abnormal gas leakage and control each lithium battery in the association area to disconnect from the charging power supply when the abnormal gas leakage is detected.

Specifically, when the lithium battery is overcharged and gas is separated out, the gas in the branch gas pipeline flows, so the abnormality determination module 202 can determine whether the lithium battery in the branch gas pipeline has abnormal gas leakage according to the gas flow information corresponding to each branch gas pipeline, the first control module 203 disconnects the abnormal lithium battery from the charging power supply, then the component detection module 205 determines whether the gas separated out from the lithium battery exists in the main pipeline according to the gas component detection information, if the gas component generated by the leakage of the lithium battery exists in the gas in the main pipeline, the second control module 206 disconnects the connection between each lithium battery in the relevant area and the charging power supply, on one hand, whether the lithium battery has gas separation can be determined through a gas component detection mode, and further disconnects the charging power supply in the relevant area related to the abnormality, namely, when the BMS system fails due to the voltage acquisition function, the charging power supply can be disconnected in time, the probability of explosion of the battery swelling is reduced, and the safety of the lithium battery is improved. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

In one possible implementation manner of this embodiment of the present application, when determining, according to the gas flow information, whether the lithium battery corresponding to each of the bronchus has a gas leakage abnormality, the abnormality determination module 202 is specifically configured to:

according to whether the flowing direction of the gas is in a preset flushing direction, whether the lithium battery corresponding to each bronchus pipeline is abnormal in gas leakage or not is determined, and the preset flushing direction is used for representing the direction of impact on each bronchus pipeline when the lithium battery educes the gas.

In one possible implementation manner of this embodiment of the present application, when determining the associated area corresponding to the abnormal gas leakage, the second control module 206 is specifically configured to:

determining the concentration of the gas generated by the leakage based on the gas component detection information;

In one possible implementation manner of the embodiment of the present application, the second control module 206 is specifically configured to, when determining, according to the concentration, an abnormal leakage level corresponding to an abnormal lithium battery;

Determining average concentration according to the number and concentration of the abnormal lithium batteries, and taking the average concentration as the concentration corresponding to each abnormal lithium battery;

In one possible implementation manner of this embodiment of the present application, when determining the corresponding association area according to the abnormal leakage level, the second control module 206 is specifically configured to:

and determining an association region according to the association range corresponding to each abnormal lithium battery.

In one possible implementation manner of this embodiment of the present application, when determining the association area according to the association range corresponding to each abnormal lithium battery, the second control module 206 is specifically configured to:

the region between the first boundary and the second boundary is determined as an associated region.

In one possible implementation manner of the embodiment of the present application, the apparatus 200 further includes:

The condition judging module is used for judging whether the gas leakage abnormality meets the preset abnormal condition, wherein the preset abnormal condition comprises that the number of the abnormal lithium batteries exceeds a preset number threshold value and/or the abnormal leakage level exceeds a preset leakage level;

the second control module 206 is specifically configured to, when determining, according to the abnormal leakage level, an association area corresponding to the abnormal gas leakage, and controlling each lithium battery in the association area to disconnect from the charging power supply:

when the preset abnormal condition is not met, determining an associated area corresponding to the abnormal gas leakage according to the abnormal leakage grade, and controlling each lithium battery in the associated area to disconnect from a charging power supply.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The embodiment of the application also describes an electronic device from the perspective of the entity apparatus, as shown in fig. 3, the electronic device 300 shown in fig. 3 includes: a processor 301 and a memory 303. Wherein the processor 301 is coupled to the memory 303, such as via a bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that, in practical applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 is not limited to the embodiment of the present application.

The processor 301 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application SpecificIntegrated Circuit ), FPGA (Field Programmable Gate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. Processor 301 may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

Bus 302 may include a path to transfer information between the components. Bus 302 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect Standard) bus or EISA

(ExtendedIndustry Standard Architecture ) bus, etc. Bus 302 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 3, but not only one bus or one type of bus.

The Memory 303 may be, but is not limited to, a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory ) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically ErasableProgrammable Read Only Memory ), a CD-ROM (Compact DiscRead Only Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory 303 is used for storing application program codes for executing the present application and is controlled to be executed by the processor 301. The processor 301 is configured to execute the application code stored in the memory 303 to implement what is shown in the foregoing method embodiments.

Among them, electronic devices include, but are not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), car terminals (e.g., car navigation terminals), and stationary terminals such as digital TVs, desktop computers, and the like, and servers and the like. The electronic device shown in fig. 3 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments herein.

The present application provides a computer readable storage medium having a computer program stored thereon, which when run on a computer, causes the computer to perform the corresponding method embodiments described above. In this application embodiment, when the lithium cell overcharges and leads to gas to separate out, gas in the branch gas pipeline will flow, consequently, according to the gas flow information that every branch gas pipeline corresponds, can judge in advance that whether there is gas leakage unusual in the lithium cell in the branch gas pipeline, and disconnect the connection of unusual lithium cell and charging source, afterwards, whether there is the gas that lithium cell separated out really in the main pipe according to gas composition detection information, if there is the gas composition that lithium cell leaked out and produced in the gas in the main pipe, disconnect each lithium cell in the relevant region with charging source again, on the one hand can confirm that the lithium cell has gas to separate out through the mode that gas composition detected, and further disconnect the charging source in the relevant region that unusual involved, namely, when BMS system is because the voltage acquisition function is inefficacy for each lithium cell produces overcharged, can in time disconnect charging source, reduce the probability that the battery bulges on fire explosion, thereby be favorable to improving the security of lithium cell. On the other hand, whether the lithium battery is abnormal or not is detected according to the gas flow, the charging power supply of the abnormal lithium battery is disconnected, and then the abnormal mode is verified through the gas components, so that the response speed of fault disconnection when the lithium battery is abnormal is improved, the probability of aggravation of the lithium battery fault is reduced, and meanwhile, the fault influence range is also reduced.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

The foregoing is only a partial embodiment of the present application and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. The utility model provides an industry lithium cell safety control method which characterized in that is provided with the branch gas pipeline in the top of every lithium cell correspondence, and branch gas pipeline intercommunication has the trunk line, branch gas pipeline is used for gathering the gas that corresponds the lithium cell and gives off, the trunk line is used for gathering each branch gas pipeline, wherein, the method includes:

if yes, determining an associated area corresponding to the abnormal gas leakage, and controlling each lithium battery in the associated area to disconnect from a charging power supply;

the determining the associated area corresponding to the abnormal gas leakage comprises the following steps:

2. The method of claim 1, wherein determining whether a gas leakage abnormality exists in the lithium battery corresponding to each of the bronchi according to the gas flow information comprises:

determining the flow direction of the gas in each branch gas pipeline according to the gas flow information in each branch gas pipeline; determining the lithium battery corresponding to each bronchus pipeline according to whether the flowing direction of the gas is in the preset flushing direction or not

And whether the gas leakage of the cell is abnormal or not, wherein the preset flushing direction is used for representing the direction of the impact on each bronchial passage when the lithium battery educes the gas.

3. The method of claim 1, wherein determining an abnormal leakage level for each abnormal lithium battery based on the concentration comprises;

4. The method of claim 1, wherein determining a corresponding association zone based on the abnormal leakage level comprises:

5. The method of claim 4, wherein determining the association region according to the association range corresponding to each abnormal lithium battery comprises:

6. The method according to claim 1, wherein the method further comprises:

7. The utility model provides an industry lithium cell safety control device which characterized in that corresponds in the top of every lithium cell and is provided with a gas pipeline, and the gas pipeline intercommunication has the trunk line, the gas pipeline is used for gathering the gas that corresponds the lithium cell and gives off, the trunk line is used for gathering each gas pipeline, wherein, the device includes:

8. An electronic device, comprising: at least one processor;

a memory;

at least one application program, wherein the at least one application program is stored in the memory and configured to be executed by the at least one processor, the at least one application program configured to: the industrial lithium battery safety management method of any one of claims 1 to 6 is performed.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed in a computer, causes the computer to execute the industrial lithium battery safety management method according to any one of claims 1 to 6.