CN117269785A - Multi-mode test supervision system of lithium battery pack based on data analysis - Google Patents
Multi-mode test supervision system of lithium battery pack based on data analysis Download PDFInfo
- Publication number
- CN117269785A CN117269785A CN202311571935.0A CN202311571935A CN117269785A CN 117269785 A CN117269785 A CN 117269785A CN 202311571935 A CN202311571935 A CN 202311571935A CN 117269785 A CN117269785 A CN 117269785A
- Authority
- CN
- China
- Prior art keywords
- test
- signal
- lithium battery
- battery pack
- preset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 272
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 132
- 238000007405 data analysis Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 49
- 230000002159 abnormal effect Effects 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 35
- 238000007599 discharging Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 22
- 238000004458 analytical method Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 3
- 238000002789 length control Methods 0.000 claims 2
- 230000005856 abnormality Effects 0.000 abstract description 6
- 238000010998 test method Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the field of lithium battery pack testing, which is used for solving the problem that safety accidents are easy to occur due to high-voltage testing in the testing process of lithium battery testing equipment, in particular to a multi-mode testing supervision system of a lithium battery pack based on data analysis, comprising a duration control unit for detecting testing duration, a battery monitoring unit for monitoring the running state of a battery and a testing control unit; according to the invention, through supervision of the high temperature and high voltage bulge of the battery and the abnormality of the electrical property, the continuous test is avoided when the battery is abnormal, and when the multi-mode test of the lithium battery pack is switched, the next test is continued after the battery is evaluated to pass, so that the intervention control of the switching flow of the test item in the operation process of the test item is realized, the safety accident caused by the continuous high voltage test and the incapability of bearing the test strength of the lithium battery pack due to the frequent switching of the multi-mode test is avoided, and the test accuracy and the safety of the test equipment are ensured.
Description
Technical Field
The invention relates to the field of lithium battery pack testing, in particular to a multi-mode testing supervision system of a lithium battery pack based on data analysis.
Background
The general lithium battery pack circulation aging system in the market generally comprises a program-controlled power supply, a program-controlled electronic load, a test cabinet, a computer host, a test tool and the like, and the general software is used for carrying out charge or discharge circulation on battery packs with various specifications and models, so that circulation aging tests can be carried out only on some basic functional lithium battery packs, and the battery packs tested by the equipment cannot have other accessory functions;
at present, in the lithium battery pack testing equipment in the prior art, in the process of testing the lithium battery pack, only the testing result of the lithium battery pack can be monitored, and safety monitoring is not carried out on the unexpected situation in the testing process of the lithium battery pack, so that safety accidents such as deflagration, liquid leakage and the like occur in the high-voltage running state of the lithium battery pack with quality problems in the testing process, the testing equipment is damaged, and property loss occurs;
aiming at the technical problems, the application provides a solution.
Disclosure of Invention
According to the invention, through monitoring the running state of the battery, the abnormality of the high temperature, high voltage bulge and electrical property of the battery can be timely found, the continuous test is avoided when the battery is abnormal, the influence of the previous test on the lithium battery is evaluated in the multi-mode test switching process of the lithium battery, the next test is continued after the evaluation is passed, the influence of the previous test procedure on the result of the subsequent test procedure is prevented, the test accuracy is ensured, the intervention control of the test item switching flow in the running process of the test item is realized, the safety accidents caused by the continuous high voltage test and the fact that the lithium battery cannot bear the test strength due to the frequent switching of the multi-mode test are avoided, the test accuracy and the safety of the test equipment are ensured, and the problem that the equipment is damaged due to the safety accident in the test process of the lithium battery test equipment is solved.
The aim of the invention can be achieved by the following technical scheme: the multi-mode test supervision system of the lithium battery pack based on data analysis comprises a duration control unit, a test mode conversion unit, a battery monitoring unit, a test control unit and a database, wherein the duration control unit can collect test duration of the lithium battery pack and generate a test standard signal according to the test duration;
the battery monitoring unit can monitor the operation data of the lithium battery pack to be tested, quantitatively analyze the operation data of the lithium battery pack to be tested, generate a battery operation state signal according to an analysis result, and send the battery operation state signal to the test control unit and the test mode conversion unit;
the test mode conversion unit is used for obtaining the running state and the test mode of the lithium battery to be tested, generating residual state data and newly-added state data according to the test mode and the running state of the lithium battery, and sending the residual state data and the newly-added state data to the test control unit;
the test control unit analyzes the tested lithium battery pack according to the residual state data and the newly-added state data, generates a test mode switching signal or a test cooling signal according to an analysis result, and sends the test mode switching signal or the test cooling signal to the test control equipment, and the test control equipment controls the test mode according to the test mode switching signal or the test cooling signal;
the database is used for generating a log file for the signals generated by the test control unit and the received signals and storing the log file.
As a preferred embodiment of the present invention, the duration control unit collects a test duration of the lithium battery pack to be tested, generates a test standard-reaching signal when the test duration reaches a preset test standard duration, sends the test standard-reaching signal to the test control unit, generates a test non-standard-reaching signal when the test duration does not reach the preset test standard duration, and sends the test duration to the test control unit.
As a preferred embodiment of the present invention, the tested lithium battery pack operation data obtained by the battery monitoring unit includes solid state data and dynamic data, wherein the solid state data includes lithium battery pack operation temperature and battery appearance deformation, and the dynamic data includes lithium battery pack charge and discharge rate and lithium battery pack operation voltage fluctuation;
when the battery monitoring unit detects the running temperature of the lithium battery pack, a plurality of temperature acquisition points are arranged on the surface of the lithium battery pack, the temperature acquired by the temperature acquisition points is arithmetically averaged to obtain average surface temperature, then a preset internal and external temperature difference coefficient is obtained, the average temperature is multiplied by the internal and external temperature difference coefficient to obtain the central temperature of the lithium battery pack, the central temperature of the lithium battery pack is compared with a preset central temperature threshold value, if the central temperature of the lithium battery pack is smaller than or equal to the preset central temperature threshold value, a normal battery temperature signal is generated, if the central temperature of the lithium battery pack is larger than the preset central temperature threshold value, the change speed of the central temperature of the lithium battery pack is detected, if the central temperature of the lithium battery pack is in an ascending state, a battery overtemperature signal is generated, and if the central temperature of the lithium battery pack is in a descending state, a high battery temperature signal is generated;
the battery monitoring unit establishes a detection point array distributed in a matrix on the surface of the lithium battery pack, periodically and circularly measures the distance between the detection point array and each detection point in the detection point array on the surface of the lithium battery pack through a range finder, compares the distances of the same detection point on the surface of the lithium battery pack obtained for multiple times, obtains a distance difference value between the two detection points, records the distance difference value as deformation quantity of the detection points, the battery monitoring unit numbers all the detection points with natural numbers of i, i=1, 2,3, …, n, obtains the deformation quantity of each detection point, records Si, obtains a battery appearance change characteristic value X through formula calculation and analysis,wherein q is a preset coefficient, and the battery monitoring unitThe battery appearance characteristic value is compared with a preset deformation threshold value, if the battery appearance characteristic value is larger than the preset deformation threshold value, a battery appearance abnormal signal is generated, if the battery appearance characteristic value is smaller than or equal to the preset deformation threshold value, the maximum value of all detection point deformation amounts Si is obtained and recorded as Smax, smax is compared with the preset maximum deformation amount, if Smax is larger than the preset maximum deformation amount, the battery appearance abnormal signal is generated, and if Smax is smaller than or equal to the preset maximum deformation amount, a battery appearance normal signal is generated.
As a preferred embodiment of the present invention, when the battery monitoring unit obtains the charging rate of the lithium battery, the charging and discharging test is performed on the lithium battery, the charging and discharging rate is calculated according to the whole charging and discharging amount and the charging and discharging time in the charging and discharging test process, if the charging and discharging rate exceeds the preset charging and discharging lower limit, a charging and discharging normal signal is generated, and if the charging and discharging rate is less than the preset charging and discharging lower limit, a charging and discharging abnormal signal is generated;
the mode that the battery monitoring unit obtained lithium battery pack operation voltage fluctuation is: detecting the discharge voltage of the lithium battery pack in the discharge test process of the lithium battery pack, wherein the detection interval is a manually preset time interval, the battery monitoring unit takes the obtained discharge voltage of the lithium battery pack as a vertical axis, takes time as a horizontal axis, draws a discharge voltage line graph, calculates the slope of each line segment in the discharge voltage line graph, records the absolute value of the calculated slope as k, compares the absolute value of each group of slopes with a preset stable slope, does not react if the slope is smaller than the preset stable slope, and generates a primary voltage fluctuation signal if one group of slopes is larger than the preset stable slope;
the battery monitoring unit records the total time of discharge voltage detection as t, records the frequency of the voltage fluctuation signal as C, calculates and obtains the voltage fluctuation frequency Y through a formula, and generates an operation voltage fluctuation signal if the voltage fluctuation frequency is greater than or equal to a preset fluctuation upper limit, and generates an operation voltage normal signal if the voltage fluctuation frequency is less than the preset fluctuation upper limit.
As a preferred embodiment of the present invention, the battery appearance normal signal, the battery appearance abnormal signal, the battery high temperature signal, the battery overtemperature signal, the battery temperature normal signal, the charge and discharge abnormal signal, the voltage fluctuation signal and the voltage normal signal all belong to a battery operation state signal;
the abnormal state signal is recorded when the battery appearance is abnormal, the battery overtemperature signal, the charge and discharge abnormal signal and the voltage fluctuation signal are recorded, and the other signals are recorded as normal state signals.
As a preferred embodiment of the present invention, the test mode conversion unit does not react when acquiring the normal state signal, and if acquiring the abnormal state signal, performs the following steps:
step one: the test mode conversion unit obtains whether the lithium battery pack is in a test state currently, if so, a test proceeding signal is generated, and if not, a test ending signal is generated;
step two: and when the test mode conversion unit acquires the abnormal state signal, the test mode conversion unit records the abnormal state as newly-increased state data if the test progress signal is generated at the same time, and records the abnormal state as residual state data if the test mode conversion unit generates the test end signal at the same time.
As a preferred embodiment of the present invention, after the test control unit obtains the residual state data, a test cooling signal is generated, after the test control unit receives the test cooling signal, the test control unit stops performing the test of the lithium battery pack in the next mode, and feeds back a cooling proceeding signal to the battery monitoring unit, the battery monitoring unit detects the battery running state, if the battery running state is all the normal state signals, a cooling completion signal is fed back to the test control unit, and the test control unit converts the test cooling signal into a test mode switching signal;
after the test control unit acquires the newly-added state data, a test pause signal is generated and sent to the management equipment, and after the management equipment manually inputs a test continuation signal, the test pause signal is converted into the test continuation signal;
and the test control unit generates a test mode switching signal when the residual state data or the newly added state data are not acquired and the test standard signal is acquired.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, in the running process of the lithium battery test equipment, the safety state of the battery in the lithium battery test is monitored, so that the intervention control of the switching flow of the test item in the running process of the test item is realized, the safety accidents caused by the continuous high-voltage test and the frequent switching of the multi-mode test, which are caused by the fact that the lithium battery pack cannot bear the test strength, are avoided, and the test accuracy and the safety of the test equipment are ensured.
2. In the invention, in the battery test process, the abnormality of the high temperature, high voltage bulge and electrical property of the battery can be timely found through the supervision of the running state of the battery, so that the continuous test of the battery during the abnormality of the battery is avoided, and the safety accident of the battery is prevented.
3. In the invention, in the switching process of the multi-mode test of the lithium battery pack, the influence of the last test on the lithium battery pack is evaluated, and the next test is continued after the evaluation is passed, so that the overload of the lithium battery caused by continuous operation of a plurality of tests is avoided, the influence of the last test procedure on the result of the subsequent test procedure is prevented, and the accuracy of the test is ensured.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a system block diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1, a multi-mode test supervision system for a lithium battery pack based on data analysis includes a duration control unit, a test mode conversion unit, a battery monitoring unit, a test control unit and a database, wherein the duration control unit can collect test duration of the lithium battery pack and generate test standard signals according to the test duration, the test standard signals include test substandard signals and test substandard signals, when the test duration reaches a preset test standard duration, the test substandard signals are generated and sent to the test control unit, and when the test duration does not reach the preset test standard duration, the test substandard signals are generated and sent to the test control unit;
the battery monitoring unit can monitor the operation data of the tested lithium battery pack, the operation data of the tested lithium battery pack obtained by the battery monitoring unit comprises solid state data and dynamic data, wherein the solid state data comprises the operation temperature of the lithium battery pack and the appearance deformation of the battery, and the dynamic data comprises the charging and discharging rate of the lithium battery pack and the operation voltage fluctuation of the lithium battery pack;
when the battery monitoring unit detects the running temperature of the lithium battery pack, a plurality of temperature acquisition points are arranged on the surface of the lithium battery pack, the temperature acquired by the temperature acquisition points is arithmetically averaged to obtain average surface temperature, then a preset internal and external temperature difference coefficient is obtained, the average temperature is multiplied by the internal and external temperature difference coefficient to obtain the central temperature of the lithium battery pack, the battery monitoring unit compares the central temperature of the lithium battery pack with a preset central temperature threshold value, if the central temperature of the lithium battery pack is smaller than or equal to the preset central temperature threshold value, a battery temperature normal signal is generated, if the central temperature of the lithium battery pack is larger than the preset central temperature threshold value, the change speed of the central temperature of the lithium battery pack is detected, if the central temperature of the lithium battery pack is in an ascending state, a battery overtemperature signal is generated, and if the central temperature of the lithium battery pack is in a descending state, a battery high temperature signal is generated;
battery monitoring unitThe method comprises the steps of establishing a detection point array distributed in a matrix on the surface of a lithium battery pack, periodically measuring the distance between the detection point array and each detection point in the detection point array on the surface of the lithium battery pack through a range finder, comparing the distance between the same detection point on the surface of the lithium battery pack obtained for multiple times by a battery monitoring unit, obtaining a distance difference value between the two detection points, recording the distance difference value as deformation of the detection points, numbering all the detection points as i by the battery monitoring unit according to natural numbers, i=1, 2,3, …, n, obtaining the deformation of each detection point, recording as Si, obtaining a battery appearance change characteristic value X through formula calculation and analysis by the battery monitoring unit,the battery monitoring unit compares the battery appearance characteristic value with a preset deformation threshold value, generates a battery appearance abnormal signal if the battery appearance characteristic value is larger than the preset deformation threshold value, acquires the maximum value of all detection point deformation amounts Si if the battery appearance characteristic value is smaller than or equal to the preset deformation threshold value, records the maximum value as Smax, compares Smax with a preset maximum deformation amount, generates a battery appearance abnormal signal if Smax is larger than the preset maximum deformation amount, and generates a battery appearance normal signal if Smax is smaller than or equal to the preset maximum deformation amount;
when the battery monitoring unit obtains the charging rate of the lithium battery, the charging and discharging test is carried out on the lithium battery, the charging and discharging rate is calculated according to the whole charging and discharging amount and the charging and discharging time in the charging and discharging test process, if the charging and discharging rate exceeds the preset charging and discharging lower limit, a charging and discharging normal signal is generated, and if the charging and discharging rate is less than the preset charging and discharging lower limit, a charging and discharging abnormal signal is generated;
the mode that the battery monitoring unit obtained lithium cell group operation voltage fluctuation is: detecting the discharge voltage of the lithium battery pack in the discharge test process of the lithium battery pack, wherein the detection interval is a manually preset time interval, a battery monitoring unit takes the obtained discharge voltage of the lithium battery pack as a vertical axis, takes time as a horizontal axis, draws a discharge voltage line graph, carries out slope calculation on each line segment in the discharge voltage line graph, records the absolute value of the calculated slope as k, compares the absolute value of each group of slopes with a preset stable slope, does not react if the slope is smaller than the preset stable slope, and generates a primary voltage fluctuation signal if one group of slopes is larger than the preset stable slope;
the battery monitoring unit records the total time of discharge voltage detection as t, records the frequency of the voltage fluctuation signal as C, calculates and obtains the voltage fluctuation frequency Y, Y=C/t through a formula, generates an operation voltage fluctuation signal if the voltage fluctuation frequency is greater than or equal to a preset fluctuation upper limit, and generates an operation voltage normal signal if the voltage fluctuation frequency is less than the preset fluctuation upper limit;
the battery appearance normal signal, the battery appearance abnormal signal, the battery high temperature signal, the battery overtemperature signal, the battery temperature normal signal, the charge and discharge abnormal signal, the voltage fluctuation signal and the voltage normal signal all belong to a battery operation state signal, and the battery operation state signal is sent to the test control unit and the test mode conversion unit.
The abnormal state signal is recorded when the battery appearance is abnormal, the battery overtemperature signal, the charge and discharge abnormal signal and the voltage fluctuation signal are recorded, and the other signals are recorded as normal state signals.
Embodiment two:
referring to fig. 1, the test mode conversion unit is configured to obtain an operation state and a test mode of a lithium battery under test, and when the test mode conversion unit obtains a normal state signal, the test mode conversion unit does not react, and if an abnormal state signal is obtained, the following steps are performed:
step one: the test mode conversion unit obtains whether the lithium battery pack is in a test state currently, if so, a test proceeding signal is generated, and if not, a test ending signal is generated;
step two: when the test mode conversion unit acquires the abnormal state signal, if the test running signal is generated at the same time, the abnormal state is recorded as newly added state data, if the test mode conversion unit acquires the abnormal state signal, the test ending signal is generated at the same time, the abnormal state is recorded as residual state data, the residual state data and the newly added state data are sent to the test control unit,
the test control unit analyzes the tested lithium battery pack according to the residual state data and the newly-added state data, generates a test cooling signal after the test control unit acquires the residual state data, stops testing the lithium battery pack in the next mode after receiving the test cooling signal, feeds back a cooling proceeding signal to the battery monitoring unit, detects the battery running state, feeds back a cooling finishing signal to the test control unit if the battery running state is all normal state signals, and converts the test cooling signal into a test mode switching signal;
after the test control unit acquires the newly-added state data, a test pause signal is generated and sent to the management equipment, and after the management equipment manually inputs a test continuation signal, the test pause signal is converted into the test continuation signal;
when the test control unit does not acquire the residual state data or the newly-added state data and acquires the test standard reaching signal, the test control unit generates a test mode switching signal, and the test control equipment controls the test mode according to the test mode switching signal, the test pause signal, the test continuing signal or the test cooling signal.
The database is used for generating a log file for the signals generated by the test control unit and the received signals and storing the log file.
According to the invention, through monitoring the running state of the battery, the abnormality of the high temperature, high voltage bulge and electrical property of the battery can be timely found, the continuous test during the abnormality of the battery is avoided, the influence of the previous test on the lithium battery is evaluated in the multi-mode test switching process of the lithium battery, the next test is continued after the evaluation is passed, the overload of the lithium battery caused by continuous multiple tests is avoided, meanwhile, the influence of the previous test procedure on the result of the subsequent test procedure is prevented, the accuracy of the test is ensured, the intervention control of the switching process of the test item during the running process of the test item is realized, the safety accident caused by the continuous high voltage test and the incapability of bearing the test strength of the lithium battery due to the frequent switching of the multi-mode test is avoided, and the accuracy of the test and the safety of the test equipment are ensured.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The multi-mode test supervision system for the lithium battery pack based on data analysis is characterized by comprising a time length control unit, a test mode conversion unit, a battery monitoring unit, a test control unit and a database, wherein the time length control unit can collect test time length of the lithium battery pack and generate a test standard signal according to the test time length;
the battery monitoring unit can monitor the operation data of the lithium battery pack to be tested, quantitatively analyze the operation data of the lithium battery pack to be tested, generate a battery operation state signal according to an analysis result, and send the battery operation state signal to the test control unit and the test mode conversion unit;
the test mode conversion unit is used for obtaining the running state and the test mode of the lithium battery to be tested, generating residual state data and newly-added state data according to the test mode and the running state of the lithium battery, and sending the residual state data and the newly-added state data to the test control unit;
the test control unit analyzes the tested lithium battery pack according to the residual state data and the newly-added state data, generates a test mode switching signal or a test cooling signal according to an analysis result, and sends the test mode switching signal or the test cooling signal to the test control equipment, and the test control equipment controls the test mode according to the test mode switching signal or the test cooling signal;
the database is used for generating a log file for the signals generated by the test control unit and the received signals and storing the log file.
2. The multi-mode test supervision system of the lithium battery pack based on data analysis according to claim 1, wherein the duration control unit collects a test duration of the lithium battery pack to be tested, generates a test standard-reaching signal when the test duration reaches a preset test standard duration, sends the test standard-reaching signal to the test control unit, generates a test non-standard-reaching signal when the test duration does not reach the preset test standard duration, and sends the test duration to the test control unit.
3. The multi-mode test supervision system for lithium battery packs based on data analysis according to claim 2, wherein the tested lithium battery pack operation data obtained by the battery monitoring unit comprises solid state data and dynamic data, wherein the solid state data comprises lithium battery pack operation temperature and battery appearance deformation, and the dynamic data comprises lithium battery pack charge and discharge rate and lithium battery pack operation voltage fluctuation.
4. The multi-mode test monitoring system for the lithium battery pack based on data analysis according to claim 3, wherein when the battery monitoring unit detects the running temperature of the lithium battery pack, a plurality of temperature acquisition points are arranged on the surface of the lithium battery pack, the temperatures acquired by the temperature acquisition points are arithmetically averaged to obtain an average surface temperature, then a preset internal and external temperature difference coefficient is obtained, the average temperature is multiplied by the internal and external temperature difference coefficient to obtain the center temperature of the lithium battery pack, the battery monitoring unit compares the center temperature of the lithium battery pack with a preset center temperature threshold value, if the center temperature of the lithium battery pack is smaller than or equal to the preset center temperature threshold value, a normal battery temperature signal is generated, if the center temperature of the lithium battery pack is larger than the preset center temperature threshold value, the change speed of the center temperature of the lithium battery pack is detected, if the center temperature of the lithium battery pack is in an ascending state, a super-temperature battery signal is generated, and if the center temperature of the lithium battery pack is in a descending state, a high-temperature battery signal is generated.
5. The multi-mode test supervision system for lithium battery pack based on data analysis according to claim 4, wherein the battery monitoring unit establishes a matrix-distributed detection point array on the surface of the lithium battery pack, periodically and circularly measures the distance from each detection point in the lithium battery pack surface detection point array through a range finder, the battery monitoring unit compares the distances of the same detection point on the lithium battery pack surface obtained multiple times, obtains the distance difference between the two detection, records the distance difference as the deformation amount of the detection point, the battery monitoring unit numbers all detection points with natural numbers of i, i=1, 2,3, …, n, obtains the deformation amount of each detection point, records as Si, and obtains the battery appearance change characteristic value X through formula calculation analysis,and q is a preset coefficient, the battery monitoring unit compares the battery appearance characteristic value with a preset deformation threshold value, if the battery appearance characteristic value is larger than the preset deformation threshold value, a battery appearance abnormal signal is generated, if the battery appearance characteristic value is smaller than or equal to the preset deformation threshold value, the maximum value of all detection point deformation amounts Si is obtained and recorded as Smax, smax is compared with the preset maximum deformation amount, if Smax is larger than the preset maximum deformation amount, a battery appearance abnormal signal is generated, and if Smax is smaller than or equal to the preset maximum deformation amount, a battery appearance normal signal is generated.
6. The multi-mode test supervision system of a lithium battery pack based on data analysis according to claim 5, wherein when the battery monitoring unit obtains the charging rate of the lithium battery, the charging and discharging rate is calculated according to the whole charging and discharging amount and the charging and discharging time in the charging and discharging test process by performing the charging and discharging test on the lithium battery, if the charging and discharging rate exceeds a preset charging and discharging lower limit, a charging and discharging normal signal is generated, and if the charging and discharging rate is less than the preset charging and discharging lower limit, a charging and discharging abnormal signal is generated.
7. The multi-mode test supervision system for a lithium battery pack based on data analysis according to claim 6, wherein the battery monitoring unit obtains the fluctuation of the operating voltage of the lithium battery pack by: detecting the discharge voltage of the lithium battery pack in the discharge test process of the lithium battery pack, wherein the detection interval is a manually preset time interval, the battery monitoring unit takes the obtained discharge voltage of the lithium battery pack as a vertical axis, takes time as a horizontal axis, draws a discharge voltage line graph, calculates the slope of each line segment in the discharge voltage line graph, records the absolute value of the calculated slope as k, compares the absolute value of each group of slopes with a preset stable slope, does not react if the slope is smaller than the preset stable slope, and generates a primary voltage fluctuation signal if one group of slopes is larger than the preset stable slope;
the battery monitoring unit records the total time of discharge voltage detection as t, records the frequency of the voltage fluctuation signal as C, calculates and obtains the voltage fluctuation frequency Y through a formula, and generates an operation voltage fluctuation signal if the voltage fluctuation frequency is greater than or equal to a preset fluctuation upper limit, and generates an operation voltage normal signal if the voltage fluctuation frequency is less than the preset fluctuation upper limit.
8. The multi-mode test supervision system of a lithium battery pack based on data analysis according to claim 7, wherein the battery appearance normal signal, the battery appearance abnormal signal, the battery high temperature signal, the battery overtemperature signal, the battery temperature normal signal, the charge and discharge abnormal signal, the voltage fluctuation signal and the voltage normal signal all belong to a battery operation state signal;
when the battery appearance abnormal signal, the battery overtemperature signal, the charge and discharge abnormal signal and the voltage fluctuation signal are recorded as abnormal state signals, and the other signals are recorded as normal state signals.
9. The multi-mode test supervision system for a lithium battery pack based on data analysis according to claim 8, wherein the test mode conversion unit does not react when acquiring a normal state signal, and performs the following steps if acquiring an abnormal state signal:
step one: the test mode conversion unit obtains whether the lithium battery pack is in a test state currently, if so, a test proceeding signal is generated, and if not, a test ending signal is generated;
step two: when the test mode conversion unit acquires the abnormal state signal, if the test running signal is generated at the same time, the abnormal state is recorded as newly-added state data, and if the test mode conversion unit acquires the abnormal state signal at the same time, the test ending signal is generated at the same time, the abnormal state is recorded as residual state data;
after the test control unit obtains the residual state data, a test cooling signal is generated, after the test control unit receives the test cooling signal, the test control unit stops testing the lithium battery pack in the next mode and feeds back a cooling proceeding signal to the battery monitoring unit, the battery monitoring unit detects the battery running state, if the battery running state is all normal state signals, a cooling finishing signal is fed back to the test control unit, and the test control unit converts the test cooling signal into a test mode switching signal.
10. The multi-mode test supervision system of a lithium battery pack based on data analysis according to claim 9, wherein the test control unit generates a test suspension signal after acquiring the new state data, and sends the test suspension signal to the management device, and the management device manually inputs a test continuation signal and then converts the test suspension signal into a test continuation signal;
and the test control unit generates a test mode switching signal when the residual state data or the newly added state data are not acquired and the test standard signal is acquired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311571935.0A CN117269785B (en) | 2023-11-23 | 2023-11-23 | Multi-mode test supervision system of lithium battery pack based on data analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311571935.0A CN117269785B (en) | 2023-11-23 | 2023-11-23 | Multi-mode test supervision system of lithium battery pack based on data analysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117269785A true CN117269785A (en) | 2023-12-22 |
| CN117269785B CN117269785B (en) | 2024-04-02 |
Family
ID=89208471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311571935.0A Active CN117269785B (en) | 2023-11-23 | 2023-11-23 | Multi-mode test supervision system of lithium battery pack based on data analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117269785B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517999A (en) * | 2024-01-08 | 2024-02-06 | 超耐斯(深圳)新能源集团有限公司 | Lithium battery cell detecting system based on artificial intelligence |
| CN117872188A (en) * | 2024-01-15 | 2024-04-12 | 广州邦禾检测技术有限公司 | Portable multifunctional power supply circulation test method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10253723A (en) * | 1997-03-13 | 1998-09-25 | Honda Motor Co Ltd | Method, apparatus and system for inspecting battery of electric automobile |
| CN102656048A (en) * | 2009-12-02 | 2012-09-05 | 丰田自动车株式会社 | Abnormality detecting system for battery assembly |
| JP2013167526A (en) * | 2012-02-15 | 2013-08-29 | Fujitsu Telecom Networks Ltd | Multimode charge/discharge test device and multimode charge/discharge test method |
| KR101655089B1 (en) * | 2015-03-16 | 2016-09-08 | 세방전지(주) | Battery management system with self-diagnosis function and control method thereof |
| CN107976630A (en) * | 2016-10-23 | 2018-05-01 | 重庆邮电大学 | A kind of battery assembly system intelligent measurement platform |
| CN108565922A (en) * | 2018-05-08 | 2018-09-21 | 成都拓源仲玛科技有限公司 | A kind of disposable lithium-battery integrated information monitoring system |
| CN108663628A (en) * | 2018-04-02 | 2018-10-16 | 上汽大众汽车有限公司 | A kind of high-tension battery packet Portable multifunctional tester |
| CN110459260A (en) * | 2019-07-05 | 2019-11-15 | 深圳市金泰克半导体有限公司 | Automatic test switching device, method and system |
| CN210803677U (en) * | 2019-08-30 | 2020-06-19 | 欣旺达电子股份有限公司 | Annual inspection equipment for battery pack of electric vehicle |
| KR102328827B1 (en) * | 2021-05-12 | 2021-11-22 | 한국해양대학교 산학협력단 | Condition Monitoring Method and Apparatus for Li-ion Batteries |
| CN113960475A (en) * | 2021-10-26 | 2022-01-21 | 广州巨湾技研有限公司 | Method for rapidly switching test models of different items |
| JP2022095275A (en) * | 2020-12-16 | 2022-06-28 | 株式会社デンソー | Battery monitoring device |
| CN116094094A (en) * | 2022-12-19 | 2023-05-09 | 广州市力驰微电子科技有限公司 | Lithium battery pack monitoring system for monitoring long string serial connection |
-
2023
- 2023-11-23 CN CN202311571935.0A patent/CN117269785B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10253723A (en) * | 1997-03-13 | 1998-09-25 | Honda Motor Co Ltd | Method, apparatus and system for inspecting battery of electric automobile |
| CN102656048A (en) * | 2009-12-02 | 2012-09-05 | 丰田自动车株式会社 | Abnormality detecting system for battery assembly |
| JP2013167526A (en) * | 2012-02-15 | 2013-08-29 | Fujitsu Telecom Networks Ltd | Multimode charge/discharge test device and multimode charge/discharge test method |
| KR101655089B1 (en) * | 2015-03-16 | 2016-09-08 | 세방전지(주) | Battery management system with self-diagnosis function and control method thereof |
| CN107976630A (en) * | 2016-10-23 | 2018-05-01 | 重庆邮电大学 | A kind of battery assembly system intelligent measurement platform |
| CN108663628A (en) * | 2018-04-02 | 2018-10-16 | 上汽大众汽车有限公司 | A kind of high-tension battery packet Portable multifunctional tester |
| CN108565922A (en) * | 2018-05-08 | 2018-09-21 | 成都拓源仲玛科技有限公司 | A kind of disposable lithium-battery integrated information monitoring system |
| CN110459260A (en) * | 2019-07-05 | 2019-11-15 | 深圳市金泰克半导体有限公司 | Automatic test switching device, method and system |
| CN210803677U (en) * | 2019-08-30 | 2020-06-19 | 欣旺达电子股份有限公司 | Annual inspection equipment for battery pack of electric vehicle |
| JP2022095275A (en) * | 2020-12-16 | 2022-06-28 | 株式会社デンソー | Battery monitoring device |
| KR102328827B1 (en) * | 2021-05-12 | 2021-11-22 | 한국해양대학교 산학협력단 | Condition Monitoring Method and Apparatus for Li-ion Batteries |
| CN113960475A (en) * | 2021-10-26 | 2022-01-21 | 广州巨湾技研有限公司 | Method for rapidly switching test models of different items |
| CN116094094A (en) * | 2022-12-19 | 2023-05-09 | 广州市力驰微电子科技有限公司 | Lithium battery pack monitoring system for monitoring long string serial connection |
Non-Patent Citations (2)
| Title |
|---|
| FANTHAM, TL ET AL.: "An overview of safety for laboratory testing of lithium-ion batteries", ENERGY REPORTS, vol. 7, no. 2, pages 2 - 8 * |
| 罗旋: "车用动力电池组综合测试软件平台设计与实现", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑, no. 06, pages 11 - 18 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117517999A (en) * | 2024-01-08 | 2024-02-06 | 超耐斯(深圳)新能源集团有限公司 | Lithium battery cell detecting system based on artificial intelligence |
| CN117517999B (en) * | 2024-01-08 | 2024-05-24 | 超耐斯(深圳)新能源集团有限公司 | Lithium battery cell detecting system based on artificial intelligence |
| CN117872188A (en) * | 2024-01-15 | 2024-04-12 | 广州邦禾检测技术有限公司 | Portable multifunctional power supply circulation test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117269785B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117269785B (en) | Multi-mode test supervision system of lithium battery pack based on data analysis | |
| CN110850303A (en) | Battery monomer self-discharge rate evaluation method | |
| CN112986851A (en) | Energy storage discharge system test platform for power supply detection | |
| CN111983525A (en) | Integrated testing method, system, terminal and storage medium for energy feedback battery pack | |
| CN112051512A (en) | Echelon utilization sorting method and energy storage system | |
| CN111965557A (en) | Backup power reliability assessment method and device | |
| CN114879066A (en) | Battery pack consistency evaluation method and system | |
| JP7313762B2 (en) | Apparatus and method for diagnosing batteries | |
| CN111823949B (en) | Battery pack online health management system and method | |
| CN116683567B (en) | High-precision bidirectional direct-current power supply for electric control test of new energy automobile | |
| CN112068006A (en) | Laboratory equipment safe operation and maintenance platform based on cloud computing | |
| CN109557469B (en) | Storage battery nuclear capacity data analysis method and device | |
| CN216351128U (en) | Battery pack overcharge test system | |
| CN110988700A (en) | Forklift lithium ion battery module health degree evaluation method | |
| CN113805085B (en) | Battery pack welding quality detection method and device, energy storage system and storage medium | |
| CN114706000A (en) | Dynamic test evaluation method and system for battery pack | |
| CN113960481A (en) | Energy storage operation detection device, system, method and storage medium | |
| CN110297189B (en) | Consistency evaluation method for single-string batteries in battery module | |
| CN117420465A (en) | Full life cycle EIS test system of backup battery of transformer substation | |
| CN114940102B (en) | Charge-discharge balancing system for power battery of electric automobile | |
| CN215297603U (en) | Lead-acid storage battery state monitoring system | |
| CN217425620U (en) | Storage battery inspection system | |
| CN112986761B (en) | Method for monitoring working performance of electrostatic eliminator | |
| CN117407664A (en) | Processing method, equipment and storage medium for accumulated charge and discharge amount data of energy storage converter | |
| CN117318231A (en) | Battery management system for real-time monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |