CN117007982A - Lead-acid storage battery safety evaluation method, electronic equipment and storage medium - Google Patents
Lead-acid storage battery safety evaluation method, electronic equipment and storage medium Download PDFInfo
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- CN117007982A CN117007982A CN202311066236.0A CN202311066236A CN117007982A CN 117007982 A CN117007982 A CN 117007982A CN 202311066236 A CN202311066236 A CN 202311066236A CN 117007982 A CN117007982 A CN 117007982A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
- G01R31/379—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A method, a system, equipment and a storage medium for evaluating the safety of a lead-acid storage battery belong to the technical field of lead-acid storage batteries, and solve the problems that the prior art requires manual experience to evaluate the safety of the storage battery, not only consumes manpower, but also has error evaluation results. The battery management system collects data of a single lead-acid storage battery, wherein the data comprise voltage, internal resistance, temperature, residual electric quantity, health and operation life; the battery management system calculates the voltage safety coefficient, the internal resistance safety coefficient, the temperature safety coefficient, the residual electric quantity safety coefficient and the health safety coefficient of the single lead-acid storage battery respectively; the battery management system calculates the safety coefficient of the single lead-acid storage battery; and judging the safety of the single lead-acid storage battery by the battery management system according to the calculated safety coefficient of the single lead-acid storage battery. The safety evaluation method of the lead-acid storage battery can be applied to the technical field of battery safety.
Description
Technical Field
The application relates to the technical field of lead-acid storage batteries, in particular to a safety evaluation method of a lead-acid storage battery.
Background
At present, most lead-acid storage battery packs of thermal power plants only collect real-time data of terminal voltage and charging and discharging current of lead-acid storage batteries, in recent years, some monitoring devices are also arranged on the market, the temperature of the lead-acid storage batteries can be additionally collected, information such as internal resistance, residual electric quantity and health degree of the lead-acid storage batteries is calculated, some simple super-threshold alarming functions are set, specific evaluation on the safety of the lead-acid storage batteries cannot be carried out, and judgment is needed through field test or artificial experience.
In the prior art, patent document CN213782928U discloses a "battery management system for lithium battery energy storage", and a manager can monitor and manage state parameters (voltage, current, electric quantity and temperature) of a battery in real time through the battery management system, so as to warn a user and limit the excessive charge and discharge of the system, thereby reducing battery damage and functional failure. In future applications, the manager can also read the historical data stored in the BMS system, and can analyze big data and further optimize the algorithm.
However, the prior art has the following defects: the safety of the storage battery is judged through field test or manual experience, firstly, labor is consumed, secondly, the influence factors are too many, the field environment, test instruments, the technical experience level of people and even working states can influence the evaluation result, and the accuracy can be greatly reduced.
In summary, in the prior art, since the safety of the storage battery is evaluated by using manual experience, not only is labor consumption consumed, but also the evaluation result is erroneous.
Disclosure of Invention
The application solves the problems that the prior art requires manual experience to evaluate the safety of the storage battery, not only consumes manpower, but also has error evaluation result.
The application relates to a safety evaluation method of a lead-acid storage battery, which comprises the following steps:
step S1, receiving data of a single-section lead-acid storage battery, wherein the data comprise voltage, internal resistance, temperature, residual electric quantity, health and operation life;
step S2, respectively calculating the voltage safety coefficient, the internal resistance safety coefficient, the temperature safety coefficient, the residual electric quantity safety coefficient and the health safety coefficient of the single-section lead-acid storage battery by adopting the data of the single-section lead-acid storage battery received in the step S1;
step S3, based on the safety coefficients of the single lead-acid storage batteries calculated in the step S2 and the operation years of the single lead-acid storage batteries, the battery management system calculates the safety coefficients of the single lead-acid storage batteries;
and S4, judging the safety of each lead-acid storage battery according to the calculated safety coefficient of the single lead-acid storage battery.
Further, in one embodiment of the present application, in the step S2, a calculation formula of the voltage safety coefficient of the single-node lead-acid battery is:
in U i The voltage of the single-section lead-acid storage battery is, alpha is the voltage safety coefficient of the single-section lead-acid storage battery, and n is an integer.
Further, in one embodiment of the present application, in the step S2, the calculation formula of the internal resistance safety coefficient of the single-node lead-acid battery is:
wherein R is i The internal resistance of the single-section lead-acid storage battery is shown, and the beta is the internal resistance safety coefficient of the single-section lead-acid storage battery.
Further, in one embodiment of the present application, in the step S2, a calculation formula of the temperature safety coefficient of the single-node lead-acid battery is:
wherein T is i The temperature of the single-section lead-acid storage battery is shown, and gamma is the temperature safety coefficient of the single-section lead-acid storage battery.
Further, in one embodiment of the present application, in the step S2, a calculation formula of a remaining capacity safety coefficient of the single lead-acid storage battery is:
in SOC i The residual capacity of the single-section lead-acid storage battery is shown, delta is the safety coefficient of the residual capacity of the single-section lead-acid storage battery, and n is an integer.
Further, in one embodiment of the present application, in the step S2, the health safety coefficient of the single-node lead-acid battery is calculated by the formula:
ε＝MIN(SOH i )；
in SOH i The health degree of the single-section lead-acid storage battery is guaranteed, and epsilon is the health degree safety coefficient of the single-section lead-acid storage battery.
Further, in one embodiment of the present application, in the step S3, a calculation formula of the safety coefficient of the single-node lead-acid battery is:
S＝α×β×γ×δ×ε(100-H)；
wherein alpha is the voltage safety coefficient of the single lead-acid storage battery, beta is the internal resistance safety coefficient of the single lead-acid storage battery, gamma is the temperature safety coefficient of the single lead-acid storage battery, delta is the residual electric quantity safety coefficient of the single lead-acid storage battery, epsilon is the health safety coefficient of the single lead-acid storage battery, H is the operation life of the single lead-acid storage battery, and S is the safety coefficient of the single lead-acid storage battery.
The application relates to an electronic device, which comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing any one of the method steps when executing the program stored in the memory.
A computer-readable storage medium according to the present application stores a computer program which, when executed by a processor, implements the method steps of any of the methods described above.
The application solves the problems that the prior art requires manual experience to evaluate the safety of the storage battery, not only consumes manpower, but also has error evaluation result. The method has the specific beneficial effects that:
1. according to the safety evaluation method for the lead-acid storage battery, in the prior art, the safety evaluation of the lead-acid storage battery is required to depend on manual experience, and the accuracy of a result generated by the evaluation method is greatly reduced, so that after the improvement of the conventional battery management system, the collected related data of a single lead-acid storage battery are automatically calculated, and finally the safety coefficient of the single lead-acid storage battery is obtained, and the battery management system automatically judges the safety of the lead-acid storage battery in real time;
2. according to the safety evaluation method for the lead-acid storage battery, the existing battery management system is improved, so that the safety of the lead-acid storage battery is completely separated from manual participation, and the purpose of more intelligentization of the battery management system is achieved;
the safety evaluation method of the lead-acid storage battery can be applied to the technical field of battery safety.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a diagram of a conventional battery management system according to an embodiment one;
fig. 2 is a flowchart of evaluating the safety of a single lead-acid battery by the conventional battery management system according to the second embodiment.
Detailed Description
Various embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings. The embodiments described by referring to the drawings are exemplary and intended to be illustrative of the application and are not to be construed as limiting the application.
The first embodiment of the present application provides a method for evaluating safety of a lead-acid battery, comprising the steps of:
step S1, receiving data of a single-section lead-acid storage battery, wherein the data comprise voltage, internal resistance, temperature, residual electric quantity, health and operation life;
step S2, respectively calculating the voltage safety coefficient, the internal resistance safety coefficient, the temperature safety coefficient, the residual electric quantity safety coefficient and the health safety coefficient of the single-section lead-acid storage battery by adopting the data of the single-section lead-acid storage battery received in the step S1;
step S3, based on the safety coefficients of the single lead-acid storage batteries calculated in the step S2 and the operation years of the single lead-acid storage batteries, the battery management system calculates the safety coefficients of the single lead-acid storage batteries;
and S4, judging the safety of each lead-acid storage battery according to the calculated safety coefficient of the single lead-acid storage battery.
The existing battery management system can collect the correlation coefficient of a single lead-acid storage battery and is provided with a plurality of simple super-threshold alarming functions, so that the safety evaluation of the single lead-acid storage battery is not set in the battery management system, and manual intervention is required for the safety evaluation of the single lead-acid storage battery, so that the problem of low accuracy of an evaluation result is caused.
The safety evaluation method of the lead-acid storage battery can be realized by adopting computer software, the computer software can be embedded into a central processing module of the existing battery management system, in practical application, the voltage acquisition module, the current acquisition module and the temperature acquisition module can respectively acquire data of voltage, current and temperature of the lead-acid storage battery, the data are sent to the central processing module for processing and analysis, the safety of the lead-acid storage battery is further evaluated, an evaluation result can be transmitted through the communication module, safety early warning information can be displayed and output through the warning display module under the condition that the evaluation result needs early warning, and the evaluation result is stored in the data storage module so as to conveniently call the history evaluation result.
As shown in fig. 1, the battery management system comprises a voltage acquisition module, a current acquisition module, a temperature acquisition module, an alarm display module, a central processing module, a data storage module and a communication module;
the voltage acquisition module is used for acquiring the voltage of the lead-acid storage battery end;
the current acquisition module is used for acquiring charge and discharge currents of the lead-acid storage battery;
the temperature acquisition module is used for acquiring the temperature of the lead-acid storage battery;
the alarm display module is used for alarming;
the central processing module is used for carrying out data processing on the acquired analog quantity and respectively transmitting the processed data to the alarm display module and the data storage module;
the data storage module is used for storing data of the central processing module;
the communication module is used for transmitting data to the DCS;
in practical applications, some modules may be integrated into one device, so as to simplify the structure of the device.
In the embodiment, a voltage acquisition module, a current acquisition module and a temperature acquisition module are adopted to acquire the terminal voltage of a single lead-acid storage battery, the branch current of the lead-acid storage battery and the temperature of the single lead-acid storage battery respectively, and acquired data are transmitted to a central processing module respectively;
based on the data, the central processing module calculates the information such as the internal resistance of the single lead-acid storage battery, the residual electric quantity of the single lead-acid storage battery, the health degree of the single lead-acid storage battery and the like;
the software module of the safety evaluation method for the lead-acid storage battery is added, namely a module for adding and obtaining the safety coefficient of the single lead-acid storage battery in the central processing module is obtained, and the module can respectively calculate the voltage safety coefficient of the single lead-acid storage battery, the internal resistance safety coefficient of the single lead-acid storage battery, the temperature safety coefficient of the single lead-acid storage battery, the residual capacity safety coefficient of the single lead-acid storage battery and the health safety coefficient of the single lead-acid storage battery;
based on the data and the operation period of the single-section lead-acid storage battery, a module which is used for calculating the safety coefficient of the single-section lead-acid storage battery is utilized, and the module can also calculate the safety coefficient of the single-section lead-acid storage battery;
the process is completely an automatic implementation process, does not need to consume manpower or participate in the safety coefficient evaluation of the single-section lead-acid storage battery, and greatly improves the evaluation accuracy.
In the second embodiment, the present embodiment is further defined by the method for evaluating safety of a lead-acid battery according to the first embodiment, wherein in the step S2, a calculation formula of a voltage safety coefficient of the single-node lead-acid battery is as follows:
in U i The voltage of the single-section lead-acid storage battery is, alpha is the voltage safety coefficient of the single-section lead-acid storage battery, and n is an integer.
In the step S2, the calculation formula of the internal resistance safety coefficient of the single-node lead-acid storage battery is as follows:
wherein R is i Is a single sectionAnd the internal resistance of the lead-acid storage battery, beta is the internal resistance safety coefficient of the single-section lead-acid storage battery.
In the step S2, the calculation formula of the temperature safety coefficient of the single-section lead-acid storage battery is as follows:
wherein T is i The temperature of the single-section lead-acid storage battery is shown, and gamma is the temperature safety coefficient of the single-section lead-acid storage battery.
In the step S2, the calculation formula of the remaining capacity safety coefficient of the single-section lead-acid storage battery is as follows:
in SOC i The residual capacity of the single-section lead-acid storage battery is shown, delta is the safety coefficient of the residual capacity of the single-section lead-acid storage battery, and n is an integer.
In the step S2, the calculation formula of the health safety coefficient of the single-section lead-acid storage battery is as follows:
ε＝MIN(SOH i )；
in SOH i The health degree of the single-section lead-acid storage battery is guaranteed, and epsilon is the health degree safety coefficient of the single-section lead-acid storage battery.
In the step S3, the calculation formula of the safety coefficient of the single-node lead-acid storage battery is as follows:
S＝α×β×γ×δ×ε×(100-H)；
wherein alpha is the voltage safety coefficient of the single lead-acid storage battery, beta is the internal resistance safety coefficient of the single lead-acid storage battery, gamma is the temperature safety coefficient of the single lead-acid storage battery, delta is the residual electric quantity safety coefficient of the single lead-acid storage battery, epsilon is the health safety coefficient of the single lead-acid storage battery, H is the operation life of the single lead-acid storage battery, and S is the safety coefficient of the single lead-acid storage battery.
In the embodiment, the whole operation process of the safety coefficient of the single-section lead-acid storage battery is a module for increasing the safety coefficient of the single-section lead-acid storage battery in the central processing module;
as shown in fig. 2, each item of data of the single lead-acid storage battery is collected in real time, and after the central processing module is added with a module for calculating the safety coefficient of the single lead-acid storage battery, the voltage safety coefficient of the single lead-acid storage battery, the internal resistance safety coefficient of the single lead-acid storage battery, the temperature safety coefficient of the single lead-acid storage battery, the residual capacity safety coefficient of the single lead-acid storage battery and the health safety coefficient of the single lead-acid storage battery can be calculated respectively according to the collected data;
based on the safety coefficients, calculating the safety coefficient of the single-section lead-acid storage battery;
the central processing module carries out safety evaluation according to the calculated safety coefficient of the single-section lead-acid storage battery, and the larger the numerical value of the safety coefficient of the single-section lead-acid storage battery is, the higher the safety of the single-section lead-acid storage battery is, otherwise, the smaller the numerical value of the safety coefficient of the single-section lead-acid storage battery is, the worse the safety of the single-section lead-acid storage battery is;
the safety coefficient of the single-section lead-acid storage battery is 0 to 100, when the safety coefficient of the single-section lead-acid storage battery is more than or equal to 95, the safety is very high, and when the safety coefficient of the single-section lead-acid storage battery is less than or equal to 80, the safety is very poor;
therefore, the module for adding the safety coefficient of the single-section lead-acid storage battery to the central processing module can quantify the safety state of the storage battery, and is more intelligent and efficient.
In summary, the evaluation method not only comprises the safety of the power supply reliability, but also comprises the body fault safety, the safety of the single lead-acid storage battery is automatically judged in real time by calculating according to the data and other related parameters acquired by the existing battery management system, the workload of personnel is reduced, the judgment deviation caused by the professional level and experience deficiency of the personnel is avoided, the judgment accuracy is improved, and the existing battery management system is more intelligent.
The above detailed description of the method, system, device and storage medium for evaluating the safety of lead-acid storage battery provided by the application applies specific examples to illustrate the principle and implementation of the application, and the above examples are only used for helping to understand the method and core idea of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (9)
1. The safety evaluation method of the lead-acid storage battery is characterized by comprising the following steps of:
step S1, receiving data of a single-section lead-acid storage battery, wherein the data comprise voltage, internal resistance, temperature, residual electric quantity, health and operation life;
step S2, respectively calculating the voltage safety coefficient, the internal resistance safety coefficient, the temperature safety coefficient, the residual electric quantity safety coefficient and the health safety coefficient of the single-section lead-acid storage battery by adopting the data of the single-section lead-acid storage battery received in the step S1;
step S3, based on the safety coefficients of the single lead-acid storage batteries calculated in the step S2 and the operation years of the single lead-acid storage batteries, the battery management system calculates the safety coefficients of the single lead-acid storage batteries;
and S4, judging the safety of each lead-acid storage battery according to the calculated safety coefficient of the single lead-acid storage battery.
2. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S2, the calculation formula of the voltage safety coefficient of the single-node lead-acid storage battery is as follows:
in U i The voltage of the single-section lead-acid storage battery is, alpha is the voltage safety coefficient of the single-section lead-acid storage battery, and n is an integer.
3. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S2, the calculation formula of the internal resistance safety coefficient of the single lead-acid storage battery is as follows:
wherein R is i The internal resistance of the single-section lead-acid storage battery is shown, and the beta is the internal resistance safety coefficient of the single-section lead-acid storage battery.
4. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S2, the calculation formula of the temperature safety coefficient of the single-node lead-acid storage battery is as follows:
wherein T is i The temperature of the single-section lead-acid storage battery is shown, and gamma is the temperature safety coefficient of the single-section lead-acid storage battery.
5. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S2, the calculation formula of the safety coefficient of the remaining capacity of the single lead-acid storage battery is as follows:
in SOC i The residual capacity of the single-section lead-acid storage battery is shown, delta is the safety coefficient of the residual capacity of the single-section lead-acid storage battery, and n is an integer.
6. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S2, the calculation formula of the safety factor of the health degree of the single-node lead-acid storage battery is as follows:
ε＝MIN(SOH i )；
in SOH i The health degree of the single-section lead-acid storage battery is guaranteed, and epsilon is the health degree safety coefficient of the single-section lead-acid storage battery.
7. The method for evaluating the safety of a lead-acid storage battery according to claim 1, wherein in the step S3, the calculation formula of the safety coefficient of the single-node lead-acid storage battery is as follows:
S＝α×β×γ×δ×ε×(100-H)；
wherein alpha is the voltage safety coefficient of the single lead-acid storage battery, beta is the internal resistance safety coefficient of the single lead-acid storage battery, gamma is the temperature safety coefficient of the single lead-acid storage battery, delta is the residual electric quantity safety coefficient of the single lead-acid storage battery, epsilon is the health safety coefficient of the single lead-acid storage battery, H is the operation life of the single lead-acid storage battery, and S is the safety coefficient of the single lead-acid storage battery.
8. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for carrying out the method steps of any one of claims 1-7 when executing a program stored on a memory.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements the method steps of any of claims 1-7.
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| CN202311066236.0A CN117007982A (en) | 2023-08-23 | 2023-08-23 | Lead-acid storage battery safety evaluation method, electronic equipment and storage medium |
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| CN202311066236.0A CN117007982A (en) | 2023-08-23 | 2023-08-23 | Lead-acid storage battery safety evaluation method, electronic equipment and storage medium |
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